From http  Wed Sep 13 09:49:44 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 06:49:44 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<7x8xkol0n9.fsf@ruckus.brouhaha.com>
	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>
	<mailman.14.1158140507.10491.python-list@python.org>
	<7xbqpk5bnc.fsf@ruckus.brouhaha.com>
	<mailman.17.1158145066.10491.python-list@python.org>
	<7xodtkt48l.fsf@ruckus.brouhaha.com>
	<mailman.25.1158154691.10491.python-list@python.org>
Message-ID: <7xr6yf3mh3.fsf@ruckus.brouhaha.com>

Robin Becker <robin at reportlab.com> writes:
> well these guys seem to think there are, perhaps it's a joke
> http://anandtech.com/mac/showdoc.aspx?i=2832&p=6

Wow!  Yes, it seems to be real ("Clovertown" 4-core cpu).  See:

http://www.tgdaily.com/2006/03/07/idf_keynotes_welcome_to_intel_3-point-0/

There's even a version that goes out to 32 cores ("Dunnington") on the
drawing boards.

We better get rid of that GIL soon ;-)


From don.pasquale at blabla_tzimeil.com  Sat Sep  9 19:15:17 2006
From: don.pasquale at blabla_tzimeil.com (don pasquale)
Date: Sun, 10 Sep 2006 02:15:17 +0300
Subject: pyparsing listAllMatches problem
References: <op.tfl7fdwumlmssi@fafoi.lan>
	<V5DMg.17072$dl.12913@tornado.texas.rr.com>
Message-ID: <op.tfmv7rvjmlmssi@fafoi.lan>

On Sat, 09 Sep 2006 20:46:29 +0300, Paul McGuire  
<ptmcg at austin.rr._bogus_.com> wrote:
> Thanks for posting this test case.  This is a bug in pyparsing.  I'll  
> have a
> fix ready shortly.
>
> -- Paul

Ur welcome, I hope you find the bug and squash it :). I temporalily solved  
my problem (in case anyone else has it) by changing another definition and  
including a second call to setResultsName.

I modified the Goal definition from
Goal = Dict(Group( relation_name + relation_body ))
to
Goal = Dict(Group( relation_name + relation_body  
)).setResultsName("glist",listAllMatches=True)

if an extra .setResultsName("glist",listAllMatches=True) is added, then  
both calls to setResultsName (in Goal and Comparison_Predicate) suddenly  
work as planned! weird huh? I don't think this generally works, but it's  
worth a try until the bug is fixed...

-- 
??????????? ?????? ???? ?????????...


From g.brandl-nospam at gmx.net  Fri Sep 15 01:22:31 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Fri, 15 Sep 2006 07:22:31 +0200
Subject: RELEASED Python 2.5 (release candidate 2)
In-Reply-To: <eedch4$srs$2@news.albasani.net>
References: <mailman.19.1158149124.10491.python-list@python.org>
	<1158158585.959817.189160@e3g2000cwe.googlegroups.com>
	<eedch4$srs$2@news.albasani.net>
Message-ID: <eeddao$ukm$1@news.albasani.net>

Georg Brandl wrote:
> Ant wrote:
>> Anthony Baxter wrote:
>> ...
>>> code in 2.5 before the final release. *Please* try this
>>> release out and let us know about any problems you find.
>> 
>> Not a problem with the release, but with the docs. I've just ported a
>> module using the ElementTree package to 2.5, and the Module Index
>> (http://docs.python.org/dev/modindex.html) lists the package as
>> elementtree, where it should be xml.etree.
>> 
>> Not a major problem, but threw me for a while, since the only reference
>> to the actual name of the module is in the title of
>> http://docs.python.org/dev/lib/module-elementtree.html (8.13
>> elementtree -- The xml.etree.ElementTree Module).
> 
> Please open a bug in the tracker at http://www.sf.net/projects/python.

Wait, don't bother - just fixed it myself.

Georg


From deets at nospam.web.de  Sat Sep  9 11:52:30 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 09 Sep 2006 17:52:30 +0200
Subject: newbie: datastructure `dictionary' question
In-Reply-To: <pan.2006.09.09.15.15.13.48103@notmal.com>
References: <pan.2006.09.09.15.15.13.48103@notmal.com>
Message-ID: <4mg69vF6015hU1@uni-berlin.de>

jason schrieb:
> Hello,
> 
> I am completely new to python and I have question that I unfortunately
> could not find in the various documentation online. My best guess is
> that the answer should be quitte easy but I have just enterd the learning
> phase so that means a hightend chance for stupidity and mistakes on my
> part.
> 
> I am trying to fill a nested dictionary from parsing a logfile. However
> each time there is only one key entry created and that's it. Just
> one entry, while the keys are different. That's 100% sure. I think
> therefore that it is an assignment error in my part. [there we have it...]
> 
> To give an static example of the datastructure that I am using to clear
> any confusion on the datastructure part:
> 
>     records = { 'fam/jason-a' : {
>         'date'    : 'Fri Sep  8 16:45:55 2006',
>         'from'    : 'jason',
>         'subject' : 'Re: Oh my goes.....',
>         'msize'   : '237284' },
>                 'university/solar-system' : {
>         'date'    : 'Fri Sep  8 16:45:46 2006',
>         'from'    : 'jd',
>         'subject' : 'Vacancies for students',
>         'msize'   : '9387' }
>     }
> 
> Looping over this datastructure is no problem.
>     rkeys = ['date', 'from', 'subject', 'msize']
>     for folder in records.keys():
>         print '--'
>         print folder
>         for key in rkeys:
>             print records[folder][key]
> 
> Now for the actual program/dynamic part - assignment in the loop I use the
> following function. Note `datum' is not a date object, just a string.
> 
> def parselog(data):
>     other = 0
>     records = {}
> 
>     for line in string.split(data, '\n'):
>         str = line.strip()
>         if str[:4] == 'From':
>             mfrom, datum = extrfrom(str), extrdate(str)
>             print datum, mfrom
>         elif str[:4] == 'Fold':
>             folder = extrfolder(str[8:])
>             records = {folder : { 'date' : datum, 'mesgbytes' : extrmsize(str[8:]), 'mesgcount' : 1}}
>         else:
>             other += 1
> 
>     displrec(records)
> 
> Note, this is not ment as a collision type datastructure, all initial data
> entries are unique. My question: Where is my assignment e.g. records =
> {folder.... wrong ?

What you essentially do is this:

records = {"some" : "dict"}
records = {"some other" : "dict"}

You rebind the name records to a new dictionary. So all your previously 
stored data is garbage collected.

What you most probably want to do (I'm a bit confused about your code & 
too lazy to dig deeper):

records = {}

records[folder] = {'date' : ...}

Notice that the dict[key]=value syntax mutates the existing dictionary.

Diez


From metaperl at gmail.com  Mon Sep 25 08:53:30 2006
From: metaperl at gmail.com (metaperl)
Date: 25 Sep 2006 05:53:30 -0700
Subject: Converting Perl Web Report to Python
In-Reply-To: <1159183961.848544.142370@e3g2000cwe.googlegroups.com>
References: <1159016655.956844.27090@d34g2000cwd.googlegroups.com>
	<%5gRg.5231$UG4.3934@newsread2.news.pas.earthlink.net>
	<1159131929.131598.164460@i42g2000cwa.googlegroups.com>
	<YxERg.2095$o71.768@newsread3.news.pas.earthlink.net>
	<1159183961.848544.142370@e3g2000cwe.googlegroups.com>
Message-ID: <1159188810.477878.212370@b28g2000cwb.googlegroups.com>


pmcgover at gmail.com wrote:
> Thanks again Dennis,
> This should do what I want with additional flexibility...  I will
> develop the code later this week.   During this excersize, I have come
> to really appreciate Python over Perl.  I love the Python command line
> interpreter that allowed me to pretest any code very quickly.  What
> Python learning resource (book web link or both) do you recommend?

I have 3 O'Reilly books that are indispensable: "Python Pocket
Reference", "Python Cookbook", and "Learning Python"



From yinxianglong at gmail.com  Sun Sep 17 07:05:09 2006
From: yinxianglong at gmail.com (=?GB2312?B?0vzP6cH6?=)
Date: Sun, 17 Sep 2006 19:05:09 +0800
Subject: How to SendMessage to a SysListView32 control for selecting an item?
Message-ID: <977252d80609170405h733186cdy42fb92b2983b27f4@mail.gmail.com>

Hi, all:
     I am writing a python script, which controls a SysListView32 Control.
But I can't select an item by sendMessage using win32gui.

     My code as following:

import winGuiAuto
import win32gui
import commctrl

wn = win32gui
wga = winGuiAuto
hwnd = wn.FindWindow("#32770", "window title") #get the handle of the window

listView = wga.findControls(hwnd, wantedClass="SysListView32")[0] #get the
handle of the listview control

# I can't sendmessage by the next line
print wn.SendMessage(listView, commctrl.LVM_SETSELECTIONMARK, 0 ,0)

Thanks in advance!
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From robert.kern at gmail.com  Thu Sep 21 23:11:53 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 21 Sep 2006 22:11:53 -0500
Subject: Building things with setup.py
In-Reply-To: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
Message-ID: <eevk9l$vnq$1@sea.gmane.org>

James Stroud wrote:
> Hello All,
> 
> This is annoying. I am trying to build scipy right now but every .so 
> file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl -shared" 
> to the ld flags.
> 
> Main Question: When building with "setup.py", where can I include this 
> information so I don't have to link every .so file by hand?

If it's actually necessary,

   python setup.py build_ext -lmylib

> Also, why would this not be caught by the developers of scipy and numpy? 

Because we've never seen it before. There's no reason that you should have to 
add those libraries manually. Can you post your build log (the one that fails) 
to scipy-dev?

   http://www.scipy.org/Mailing_Lists

> What factors go into needing to specify libraries and to properly link 
> .so files manually? Certainly the enthought didn't forget to test the 
> build process, so why would my machine be special in this regard?
 >
> I'm running Linux FC4 on a dual intel p4 (~3.2 GHz) with sundry 
> libraries in non-standard places. Is this non-standard part what's 
> killing me?

Possibly. Won't know more until I see the build log.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From cfriedl at bigpond.net.au  Thu Sep  7 05:30:45 2006
From: cfriedl at bigpond.net.au (Chris)
Date: Thu, 07 Sep 2006 09:30:45 GMT
Subject: [ANN] IronPython 1.0 released today!
In-Reply-To: <4m835vF4narnU1@uni-berlin.de>
References: <mailman.38.1157488049.5279.python-list@python.org>
	<ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
	<4m835vF4narnU1@uni-berlin.de>
Message-ID: <9FRLg.24762$rP1.15051@news-server.bigpond.net.au>

Diez B. Roggisch wrote:
> Chris wrote:
> 
>> Jim Hugunin wrote:
>>> I'm extremely happy to announce that we have released IronPython 1.0
>>> today!
>>>  http://www.codeplex.com/IronPython
>> <snip>
>>
>> I'm no code guru but it sounds interesting. So can I import numpy,
>> scipy, matplotlib, wxpython etc like I do now with CPython and expect,
>> short of a few tweaks, that my code will work?
<snip>
> No, you can't. I'm not sure if there are any bridging attempts being made,
> but in this respect IronPython is the same as Jython - a completely
> different runtime which executes its own byte-code. 
> 
> Diez
Disappointing because, apart from python itself, what I find amazing is 
the wealth of additional packages that, by association, come to be 
considered part of "python". Anyway thanks for saving me from some 
fruitless explorations.


From __peter__ at web.de  Thu Sep 21 09:54:13 2006
From: __peter__ at web.de (Peter Otten)
Date: Thu, 21 Sep 2006 15:54:13 +0200
Subject: Decorator cllass hides docstring from doctest?
References: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>
Message-ID: <eeu5fb$rbl$02$1@news.t-online.com>

Berthold H?llmann wrote:

> Saving the following code to a file and running the code through
> python does not give the expected error. disableling the "@decor" line
> leads to the expected error message. Is this a bug or an overseen
> feature?

Neither, I'd say. Just an unfortunate interaction between doctest and
function decoration. For the most common case where one function is wrapped
by another, Python 2.5 has grown a "meta-decorator"

>>> import functools
>>> def deco(f):
...     @functools.wraps(f)
...     def g():
...             f()
...     return g
...
>>> @deco
... def f():
...     "yadda yadda"
...
>>> f.__doc__
'yadda yadda'

but with callable objects you're on your own, I think. 
I came up with:

def register_doctest(name, doc):
    global __test__
    if doc:
        try:
            __test__
        except NameError:
            __test__ = {name: doc}
        else:
            if name in __test__:
                raise ValueError("name clash")
            __test__[name] = doc

class decor(object):
    def __init__(self, f):
        self.f = f
        register_doctest(f.__name__, f.__doc__)
    def __call__(self, *args, **kw):
        return self.f(*args, **kw)

@decor
def f(a, b):
    """
    >>> f(1,2)
    False
    >>> f(2,2)
    False
    """
    return a == b

import doctest
doctest.testmod()

Peter


From raschulmanxx at verizon.net  Wed Sep  6 00:08:20 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Wed, 06 Sep 2006 04:08:20 GMT
Subject: Unicode string handling problem
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
	<1157511027.277425.266490@h48g2000cwc.googlegroups.com>
	<4fhsf2d2bn0vub865pdr53s7dfr8k5ao0m@4ax.com>
Message-ID: <haisf21g24dh4tqn6mjf6urodtq8e5dcor@4ax.com>

On Wed, 06 Sep 2006 03:55:18 GMT, Richard Schulman
<raschulmanxx at verizon.net> wrote:

>...I'm now using the codec with
>improved results, but am still puzzled as to how to handle the row
>termination of \n\n, which is being interpreted as two rows instead of
>one.

Of course, I could do a double read on each row and ignore the second
read, which merely fetches the final of the two u'\n' characters. But
that's not very elegant, and I'm sure there's a better way to do it
(hint, hint someone).

Richard Schulman (for email, drop the 'xx' in the reply-to)


From jimburton1 at gmail.com  Fri Sep 29 06:45:41 2006
From: jimburton1 at gmail.com (jimburton)
Date: 29 Sep 2006 03:45:41 -0700
Subject: Organising unit tests
Message-ID: <1159526741.807715.43600@m73g2000cwd.googlegroups.com>

I have a number of unit tests organised hierarchically, all of which
inherit fixtures from a base class. To run these all at once I started
out using

from basic import map, directionalpan, layerorder, layervisibility,
listlayers, streamlayerlist
# ... lots more ...

suite0 =
unittest.TestLoader().loadTestsFromTestCase(directionalpan.TestPan)
suite1 =
unittest.TestLoader().loadTestsFromTestCase(layerorder.TestLayerorder)
# ... lots more ...

alltests = unittest.TestSuite([suite0
                               , suite1
                               ....])
unittest.TextTestRunner(verbosity=2).run(alltests)

Which is unmaintainable. the TestLoader docs warn that
loadTestsFromModule will not play nicely with my situation and indeed
if I try

suite0 = unittest.TestLoader().loadTestsFromModule(basic)

then run the tests, it hasn't picked any up. I suppose I could collect
and run the tests with a shell script...what are my options here to
avoid hardcoding and maintaining the list of tests, and how is it
normally done?

Thanks.



From ldo at geek-central.gen.new_zealand  Mon Sep 25 03:03:36 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 19:03:36 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ef7uue$mn8$1@lust.ihug.co.nz>

In message <slrnehd2vg.7nu.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Lawrence D'Oliveiro enlightened us with:
>> Yes, I have done blobs. Still need a quoting function for the
>> specials, though.
> 
> Why? What makes your data so different from mine?

        "select * from details where person_name like"
        " concat(\"%%\", %s, \"%%\")" \
    % \
        QuoteSQL(name, True)


From steve at holdenweb.com  Tue Sep 12 12:50:46 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 17:50:46 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158078076.198865.6690@e63g2000cwd.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
Message-ID: <ee6oft$d93$1@sea.gmane.org>

Paul Boddie wrote:
> Fredrik Lundh wrote:
> 
>>Steve Holden wrote:
>>
>>
>>>Sure. But if you go back to the start of the thread you'll remember the
>>>OP was originally complaining that SQLite was being promoted in the
>>>Python docs as SQL compliant. It clearly isn't if its response to the
>>>insertion of a data value that conflicts with the declared column type
>>>is to store a value whose type is something else.
>>
>>the standard actually says "If the value of any input parameter provided
>>by the SQL-agent falls outside the set of allowed values of the data
>>type of the parameter /.../ the effect is implementation-defined" so
>>that's perfectly SQL92 compliant.
> 
> 
> To be fair, that text originates in section 12.3, referring to input
> parameters to procedures. Meanwhile, the following text (subclause
> 13.8, "<insert statement>") appears to be more pertinent:
> 
> "If the data type of the target identified by the i-th <column name> is
> an exact numeric type, then the data type of the i-th item of the
> <insert statement> shall be an exact numeric type."
> 
> I have used SQLite (releases 2 and 3) to my satisfaction, aware of the
> "common knowledge" around the limitations (or features) of SQLite with
> respect to data types. I'd agree with the complainant that the
> behaviour of SQLite isn't what one would expect, although I started my
> relational database experience using an Oracle database system and
> admit that I may have been spoilt, thus saving Mr Holden - a
> self-confessed Yorkshireman, I believe - the effort involved in
> pointing out the relative luxury of my professional upbringing. ;-)
> 
Spoilt? I should say so. When I were a lad we 'ad to scrape around for 
half a bit here and half a bit there - you didn't find whole bits just 
lying around in them days. As fer integers, you 'ad to save up for a 
year just to get sixteen bits. We used ter dream abaht 'avin' 64 bits, 
but there were no chance unless yer Dad were rich. Most of our strings 
were put together from characters we'd dredged out of t' canal, you 'ad 
to try and ignore the mud. We'd 'ave given our eye teeth for a bit of 
UTF-8 on a Sunday.

These kids wi' their Oracle databases didn't know they were born. I can 
remember 'avin' to optimise programs by making sure that the next 
instruction were comin' under the heads of t' drum just as the last 
instruction were finishing.

But yer tell these young folk nowadays and they just don't believe yer.

etc., etc.

pythonistical-ly y'rs  - steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jussij at zeusedit.com  Mon Sep 11 18:54:08 2006
From: jussij at zeusedit.com (jussij at zeusedit.com)
Date: 11 Sep 2006 15:54:08 -0700
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <1158015248.563755.32980@p79g2000cwp.googlegroups.com>

Omar wrote:
> I'd love the perfect editor that would be:

Zeus for Windows understands Python, Java Script, HTML
an many other languages:

   http://www.zeusedit.com/features.html
   Note: Zeus is shareware (45 day trial).

It will do Python syntax highlighting, code folding, class
browsing, smart indenting, project/workspace management etc
etc.

You can even write Zeus macros in Python or Java Script:)

Jussi Jumppanen
Author: Zeus for Windows



From cliff at develix.com  Thu Sep 14 06:22:54 2006
From: cliff at develix.com (Cliff Wells)
Date: Thu, 14 Sep 2006 03:22:54 -0700
Subject: Why not event-driven packages in other than the main thread?
In-Reply-To: <eeb6go$kfk$1@news.uit.no>
References: <eeb6go$kfk$1@news.uit.no>
Message-ID: <1158229374.3622.109.camel@devilbox>

On Thu, 2006-09-14 at 11:13 +0200, Tor Erik wrote:
> Hi,
> 
> I've developed an application were I've used Tkinter for the GUI.
> When I ran the GUI in another thread than the main, it kept locking
> up.
> I experienced similar problems with Twisted.
> 
> Both of these tools are event-based, so I guess that is the root of the 
> problem...
> 
> But could anyone tell me why running these in a thread other than the 
> main one doesn't work?

They probably use signals (Twisted I'm sure does) and it's documented
that signals don't work with threads:

http://docs.python.org/lib/module-signal.html

Regards,
Cliff

-- 



From rokkamraja at gmail.com  Fri Sep 22 09:19:10 2006
From: rokkamraja at gmail.com (Raja Rokkam)
Date: Fri, 22 Sep 2006 18:49:10 +0530
Subject: Python Network Programming
Message-ID: <357297a00609220619j32cb5f3fs5afd40120d5f60b@mail.gmail.com>

Hi,
   I am currently doing my final year project "Secure mobile Robot
Management" . I have done the theoretical aspects of it till now and now
thinking of coding it .

I would like to code in Python , but i am new to Python Network Programming
.
Some of features of my project are:

1.  Each robot can send data to any other robot.
2. Each robot can receive data from any other robot.
3.  Every Robot has atleast 1 other bot in its communication range.
4.  maximum size of a data packet is limited to 35 bytes
5.  each mobile robot maintains a table with routes
6.  all the routes stored in the routing table include a ??eld named
life-time.
7.  Route Discovery Process initiated if there is no known route to other
bot.
8. There is no server over here .
9. every bot should be able to process the data from other bots and both
multicast/unicast
     need to be supported.

Assume the environment is gridded mesh and bots exploring the area. They
need to perform a set of tasks (assume finding some locations which are
dangerous or smthing like that).

My main concern is how to go about modifying the headers such that
everything fits in 35bytes .
I would like to know how to proceed and if any links or resources in this
regard. How to modify the headers ? ie. all in 35 bytes .

Thank You,
Raja.
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From bignose+hates-spam at benfinney.id.au  Fri Sep 22 07:58:33 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 22 Sep 2006 21:58:33 +1000
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
Message-ID: <87zmcsxgd2.fsf@benfinney.id.au>

"Ilias Lazaridis" <ilias at lazaridis.com> writes:

> Where can I find _compact_ documentation about

Can you tell us what is lacking about the documentation at
<URL:http://www.python.org/doc/> ? Specifically, what problems have
you found in understanding these topics from the documentation
available at that site?

-- 
 \        "The World is not dangerous because of those who do harm but |
  `\      because of those who look at it without doing anything."  -- |
_o__)                                                  Albert Einstein |
Ben Finney



From ejatwellkeeperdotcom  Thu Sep 28 14:31:19 2006
From: ejatwellkeeperdotcom (Erik Johnson)
Date: Thu, 28 Sep 2006 12:31:19 -0600
Subject: using the email module
References: <451bfcca$1@nntp.zianet.com>
	<slrneho48k.c10.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <451c150f$1@nntp.zianet.com>


"Sybren Stuvel" wrote:

> If the HTML document should really be attached, give it a
>     Content-Disposition: Attachment
> header. Check out the accompanying headers as well, by simply emailing
> yourself an attached HTML file and examining the email source.

html = """\
<html>
...
</html>
"""
attachment = MIMEText(html, 'html')
attachment['Content-Disposition'] = 'attachment; filename="sample.html"'
msg.attach(attachment)


# Ah! Yes, that works! Thank you! ;)




From bj_666 at gmx.net  Wed Sep 20 17:54:49 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 20 Sep 2006 23:54:49 +0200
Subject: "list index out of range" error
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
Message-ID: <pan.2006.09.20.21.54.45.550086@gmx.net>

In <1158787569.955853.223030 at h48g2000cwc.googlegroups.com>, sam wrote:

> i'm trying to code a version of a selection sort and the heart of the
> code is as follows (no_lines is simply the number of items to be
> sorted, read out of an input file):
> 
> for j in range(0, no_lines):
> 
>     k = 0
>     while k < no_lines:
>         sorted_check = 0
>         if list_initial[k] < list_initial[k+1]:
>             temp_str = list_initial[k]
>         elif list_initial[k] == list_initial[k+1]:
>             temp_str = list_initial[k]
>         elif list_initial[k] > list_initial[k+1]:
>             temp_str = list_initial[k+1]
>             sorted_check = 1
>         k += 1
> 
>     list_initial.remove(temp_str)
>     list_final.append(temp_str)
>     no_lines -= 1
> 
>     if sorted_check == 0:
>         break
> 
> problem is, i keep getting a "list index out of range" error. i've had
> this problem before in different contexts with lists in loops.
> 
> i thought i had it cracked when it occurred to me that i needed to
> decrement no_lines to take into account that list_initial was shrinking
> as i deleted sorted items, but i still got the same error. it's
> probably something trivial, but i can't seem to get round it by using
> while loops, and i had the same problem with cmp(), hence the explicit
> comparison above, which still doesn't work. can anyone help a beginner
> out with this?

It has nothing to do with `cmp()` vs. explicit testing but with indexing
the `k+1` element.  Let's assume `no_lines` is 10 then the elements have
the indexes 0 to 9.  Within the while loop `k` is incremented and the loop
body is executed as long as `k < 10`.  When `k == 9` you try to access the
element at index `k+1`, but there is no element at index 10.  So you get
the `IndexError`.

Ciao,
	Marc 'BlackJack' Rintsch


From sybrenUSE at YOURthirdtower.com.imagination  Fri Sep 29 12:20:08 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Fri, 29 Sep 2006 18:20:08 +0200
Subject: retry in exception
References: <451d4294$1@news.vo.lu>
Message-ID: <slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>

Antoine De Groote enlightened us with:
> I hope I don't upset anybody by comparing Python to Ruby (again). Is 
> there something like Ruby's retry keyword in Python?

Please don't assume that everybody knows Ruby through and through...

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From MonkeeSage at gmail.com  Fri Sep 22 15:09:13 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 22 Sep 2006 12:09:13 -0700
Subject: Does Python provide "Struct" data structure?
References: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>
	<4nietsFahdftU1@individual.net>
Message-ID: <1158952153.009201.70000@m73g2000cwd.googlegroups.com>

Hi Daniel,

To avoid problems you could vendor the ipython file you require, but an
easier solution may just be to implement your own version of the class
(it's extreemly easy):

class struct():
  def __init__(self, *args, **kwargs):
    for k, v in kwargs.items():
      setattr(self, k, v)

mystruct = struct(echo = 1,
                  verb = 'Verbose',
                  filedir = 'C:/temp')

print mystruct.filedir

Regards,
Jordan



From fabrizio.cornelli at gmail.com  Fri Sep  1 04:59:29 2006
From: fabrizio.cornelli at gmail.com (Fabrizio Cornelli)
Date: Fri, 1 Sep 2006 10:59:29 +0200
Subject: Strange string encoding behaviour with pymssql
Message-ID: <48787d890609010159i797084c5vdefeeb3a833a75fd@mail.gmail.com>

Hello,
  I'm using pymssql to extract data from a legacy table with a non-ascii
encoded name.
The strange thing is that I can make my query from the idle's console, but
it doesn't work from python. (I'm working in a windows environment)

The error shows that there's a problem related to the encoding, I've tried
to excplicit it in a -*- coding: latin-1 -*- fashion, but it seems it's not
enough. Converting with unicode(query,encode) trying all the known encoding
formats dowsn't work as well.

I tried something like: mssql.query("select id_attivit? from prodotti") and
I have an error in the form:
pymssql.DatabaseError: internal error: SQL Server message 207, severity 16,
stat
e 3, line 1:
Il nome di colonna 'id_attivit?' non ? valido.

As you can see 'id_attivit?' has been wrongly converted in 'id_attivit?' .

Why, I wonder, idle's console and pythonwin can manage correctly the string
and python.exe does not?

Is it a problem related to pymssql and this is not the right place where to
post it, or is there someone that could show me a solution?
Thanks in advance for any hint.

-- 
Fabrizio Zeno Cornelli
-------------- next part --------------
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From sjmachin at lexicon.net  Thu Sep 28 21:32:00 2006
From: sjmachin at lexicon.net (John Machin)
Date: 28 Sep 2006 18:32:00 -0700
Subject: sqlite3 error
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<1159394058.945948.119410@h48g2000cwc.googlegroups.com>
	<yCQSg.41$1n3.351@news.tufts.edu>
Message-ID: <1159493520.289291.276850@b28g2000cwb.googlegroups.com>

John Salerno wrote:
> John Machin wrote:
> > John Salerno wrote:
> >> CREATE TABLE Researchers (
> >>      researcherID varchar(9) PRIMARY KEY NOT NULL,
> >>      birthYear int(4) DEFAULT NULL,
> >>      birthMonth int(2) DEFAULT NULL,
> >>      birthDay int(2) DEFAULT NULL,
> >>      birthCountry varchar(50) DEFAULT NULL,
> >>      birthState char(2) DEFAULT NULL,
> >>      birthCity varchar(50) DEFAULT NULL,
> >>      nameFirst varchar(50) NOT NULL,
> >>      nameLast varchar(50) NOT NULL,
> >>      nameGiven varchar(255) DEFAULT NULL,
> >
> > A bit OT, but one answer to the "can you make a living with just
> > Python" question is "Yup, tool of choice for rummaging in and fixing
> > data that's been mangled by users cramming it into dodgy data models"
> > :-)
> >
[snip]
>
> > (2) It's not apparent how you would use the first, last, and given
> > names columns, especially with two of them being "not null". Consider
> > how you would store e.g.:
> > J Edgar Hoover
> > DJ Delorie
> > Sukarno
> > 35
> > Maggie Cheung Man-Yuk
> > Molnar Janos
> > Fatimah binte Rahman
> > Zhang Manyu
>
> Not sure I follow you on some of these examples. In the case of J Edgar
> Hoover, I would just put the full name for his first name, or if "J" is
> entered, then just that, I suppose. Given name will be first name +
> middle name(s). (I took most of this schema from a baseball database, so
> maybe it's just something that worked better there.)

You sure to be using "last name" to mean "surname" in the sense of
unchanging family name e.g. John and Mary Smith are the children of
Fred Smith, who is the son of Joe Smith.

You would address a letter to Mary as "Dear Ms Smith", and in follow-on
paragraphs in (say) a news article might refer to her using only the
surname  e.g. "Smith also announced ...".

The problems are (1) there are cultures that don't have the concept of
a surname, and if they do, it may not be the "last name" (2) the name
may consist of only one word (giving you problems with "not null") or
not even be a word.

DJ Delorie -- his "given name" *is* DJ
Sukarno -- one word name
35 -- some jurisdictions allow name to include (or consist solely of)
digits
Maggie Cheung Man-Yuk -- surname is Cheung [Hong Kong romanisation]
Molnar Janos -- surname is Molnar
Fatimah binte Rahman -- no surname; daughter of person whose given name
is Rahman
Zhang Manyu -- surname is Zhang [pinyin romanisation]; same person as
Maggie Cheung Man-Yuk

It gets better:

Iceland: Jon Bjornsson and Hildur Bjornsdottir are the children of
Bjorn Eiriksson.

Portuguese: Jose Carlos Fernandes [mothers's family name] Rodrigues
[fathers's family name]; first step in shortening gives Jose Carlos
Rodrigues -- no drama here, but compare with Spanish: Jose Carlos
Fernandez [father's family name] Rodriguez [mother's family name],
shortened to Jose Carlos Fernandez.

[parts of] Somalia, Ethiopia: [using English given-name words for
clarity] Tom Dick Harry and Janet Dick Harry are the children of Dick
Harry Fred, who is the son of Harry Fred Joe.

Vietnamese: Full name e.g. Nguyen Thi Hoa Dung -- I have seen this
recorded as last name = Nguyen (that's the family name; doing well so
far), but first name = Thi. Thi means "Ms" or "female". The "first
name" is actually Dung. Given the popularity of Nguyen as a family name
(about 50% !!) , the recorded information has narrowed the choice to
about 25% of the Vietnamese population :-(

Cheers,
John



From franz.steinhaeusler at gmx.at  Sat Sep 16 14:54:06 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhäusler)
Date: Sat, 16 Sep 2006 20:54:06 +0200
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<599og29q5ano6pn3s0fi13533h86j747kk@4ax.com>
	<20060916175424.2237.2442.XPN@orion.homeinvalid>
Message-ID: <rthog21kjqrg1lq5c0ldje2m62gpjkcs2a@4ax.com>

On Sat, 16 Sep 2006 17:54:27 GMT, Nemesis <nemesis at nowhere.invalid>
wrote:

>Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:
>
>
>> For the find, I personally would prefer to jump default to "body",
>> but this is of course a matter of taste.
>
>Do you mean you would like the focus to be set on the "body" search
>field?

Yes, that I meant.

>
>> I dos prompt, all the time the prompt doesn't return anymore
>> (are there still open windows)?
>>
>>
>> I quit with ctrl-break:
>>
>> Traceback (most recent call last):
>>
>>   File "c:\Programme\xpn\xpn.py", line 507, in destroy
>>
>>     self.purge_groups()
>>
>>   File "c:\Programme\xpn\xpn.py", line 2456, in purge_groups
>>
>>     articles.update(articles_dict)
>>
>>   File "C:\Python24\lib\UserDict.py", line 147, in update
>>
>>     self[k] = v
>>
>>   File "c:\Python24\lib\shelve.py", line 129, in __setitem__
>>
>>     p.dump(value)
>>
>> KeyboardInterrupt
>
>I don't know how "CTRL+break" interact with XPN, it's better to close it
>with its exit function "CTRL+E".

Because it hanged. The dos prompt didn't return, so I have to 
type ctrl-c or ctrl-break to get the prompt back.

>
>> I changed the key Find message to ctrl f, and then I restart, I got:
>>
>>
>> Traceback (most recent call last):
>>   File "c:\Programme\xpn\xpn.py", line 2987, in ?
>>     main=MainWin(options.use_home,options.custom_dir)
>>   File "c:\Programme\xpn\xpn.py", line 2917, in __init__
>>     self.show_subscribed()
>>   File "c:\Programme\xpn\xpn.py", line 557, in show_subscribed
>>     total=len(articles.keys())
>>   File "c:\Python24\lib\shelve.py", line 98, in keys
>>     return self.dict.keys()
>>   File "C:\Python24\lib\bsddb\__init__.py", line 238, in keys
>>     return self.db.keys()
>> DBPageNotFoundError: (-30988, 'DB_PAGE_NOTFOUND: Requested page not
>> found')
>> I cannot start the program anymore.
>>
>> maybe it has something to to with shortcuts.dat. 
>> (I don't know).
>
>No I don't think it is related to the shortcuts, it seems that
>your articles db is corrupted, it got broken when the application has
>been closed not in the right way.

Aha. I try again any further.
-- 
Franz Steinhaeusler


From shejo284 at gmail.com  Thu Sep 28 08:53:06 2006
From: shejo284 at gmail.com (Sheldon)
Date: 28 Sep 2006 05:53:06 -0700
Subject: Resuming a program's execution after correcting error
Message-ID: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>

Hi.

Does anyone know if one can resume a python script at the error point
after the error is corrected?
I have a large program that take forever if I have to restart from
scratch everytime. The error was the data writing a file so it seemed
such a waste if all the data was lost and must be recalculated again.

Sincerely,
Sheldon



From johannes at axandra.com  Mon Sep 25 13:27:47 2006
From: johannes at axandra.com (johannes at axandra.com)
Date: 25 Sep 2006 10:27:47 -0700
Subject: Job offer python programmer
References: <1159189896.956716.84320@k70g2000cwa.googlegroups.com>
	<7xzmcokrv3.fsf@ruckus.brouhaha.com>
Message-ID: <1159205267.826430.12470@h48g2000cwc.googlegroups.com>

Paul Rubin wrote:
> johannes at axandra.com writes:
> > We're looking for a software developer Python/PHP/Ajax/MySQL for web
> > applications (full time job). Maybe someone in this group might be
> > interested in this job.
> > Further information can be found here:
> > About the job: http://www.Axandra.de/python
>
> Well, that page is in German, so I'm guessing you want a German speaker?

Hello Paul,

Thank you for your reply.

We need a German speaker. Please accept my apologies for not being
clear in the initial post.

All the best,

Johannes



From steve at holdenweb.com  Tue Sep 26 09:56:12 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 09:56:12 -0400
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efase7$16m$1@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>	<efaj9p$fqq$2@lust.ihug.co.nz>	<efakif$idf$1@lust.ihug.co.nz>	<mailman.644.1159256238.10491.python-list@python.org>	<efapp8$rfd$3@lust.ihug.co.nz>	<mailman.652.1159263385.10491.python-list@python.org>
	<efase7$16m$1@lust.ihug.co.nz>
Message-ID: <efbbga$hng$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.652.1159263385.10491.python-list at python.org>, Fredrik
> Lundh wrote:
> 
> 
>>Lawrence D'Oliveiro wrote:
>>
>> > SQL databases like MySQL are _designed_ for efficiency.
>>
>>unlike the Python data types, you mean ?
> 
> 
> Did I say it was unlike anything?

Can you please stop this incessant carping? c.l.py used to be a fun 
place to hang out.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bignose+hates-spam at benfinney.id.au  Wed Sep 13 22:34:23 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 14 Sep 2006 12:34:23 +1000
Subject: Python to JavaScript Compiler? Anyone written such a beast?
References: <dM2Og.1751$IA.558@newssvr11.news.prodigy.com>
Message-ID: <87hczbmb0w.fsf@benfinney.id.au>

kenneth.m.mcdonald at sbcglobal.net writes:

> Of course, I'm not talking about something that would transform any
> Python code into semantically JavaScript code, but simply something
> that would analyze a "restricted" Python source file, and spit out
> equivalent JavaScript.

You may be looking for Pyjamas:

    <URL:http://pyjamas.pyworks.org/>

-- 
 \            Hercules Grytpype-Thynne: "Well, Neddie, I'm going to be |
  `\      frank."  Ned Seagoon: "Right, I'll be Tom."  Count Moriarty: |
_o__)        "I'll be Gladys." *slap*  -- The Goon Show, _World War I_ |
Ben Finney



From fuzzyman at gmail.com  Wed Sep 13 17:45:29 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 13 Sep 2006 14:45:29 -0700
Subject: Python blogging software
In-Reply-To: <mailman.50.1158182707.10491.python-list@python.org>
References: <1158132558.3622.29.camel@devilbox>
	<mailman.7.1158132885.10491.python-list@python.org>
	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>
	<mailman.50.1158182707.10491.python-list@python.org>
Message-ID: <1158183929.155925.6050@m73g2000cwd.googlegroups.com>


Cliff Wells wrote:
> On Wed, 2006-09-13 at 08:22 -0700, Fuzzyman wrote:
> > Cliff Wells wrote:
> > > On Wed, 2006-09-13 at 00:29 -0700, Cliff Wells wrote:
> > >
> > > > Anyone aware of any functional (doesn't need to be complete, beta is
> > > > fine) blog software written in Python?
> > >
> > > Hmph.  And as soon as I hit send I find
> > >
> > >  http://wiki.python.org/moin/PythonBlogSoftware
> > >
> > > Okay, so is there any *not* on that list that should be considered (and
> > > perhaps added to the list)?
> >
> > Firedrop2 is a client-side blog program (generates static HTML to be
> > uploaded to your webserver).
>
> I looked at this but didn't care for it as it doesn't appear to allow
> for comments (feature-wise it's a few steps down from Frog, which I
> already have working).
>

Because it is client side (rather than running on the server), it has
no built in comments facility. I use Haloscan for comments, but I'm
always on the look out for a neat comments system to integrate with
Firedrop.

I personally prefer the 'client side' approach, as it makes migrating
content to another server trivially easy.

All the best,


Fuzzyman
http://www.voidspace.org.uk/python/index.shtml



From roy at panix.com  Tue Sep 12 23:49:09 2006
From: roy at panix.com (Roy Smith)
Date: Tue, 12 Sep 2006 23:49:09 -0400
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1hlki4l.hxeyzim53ewmN%aleax@mac.com>
	<1158118298.156680.7500@m73g2000cwd.googlegroups.com>
Message-ID: <roy-3A8ECC.23490912092006@reader1.panix.com>

In article <1158118298.156680.7500 at m73g2000cwd.googlegroups.com>,
 "Carl Banks" <pavlovevidence at gmail.com> wrote:

> Alex Martelli wrote:
> 
> > IBM (PL/I's inventor and rabid defender) found out the hard way that
> > making the parser more complicated, slow and bug-prone in order to allow
> > such absurd obfuscation was NOT a popular trade-off -- despite IBM's
> > alleged monopoly power, PL/I is now basically dead while the older,
> > crankier languages that PL/I wanted to replace, Cobol and particularly
> > Fortran, are still quite alive (and with reserved words ALWAYS reserved
> > -- like in C, Python, Java, C#, Haskell, and basically every language
> > that's even halfway sensible;-).
> 
> Except Fortran doesn't have any reserved words either:
> 
>       PROGRAM KWDS
>       REAL REAL,WRITE
>       WRITE=1.0
>       REAL=2.0
>       WRITE(*,*)WRITE,REAL
>       END
> 
> (Not sure whether it's true in Fortran 9x.)
> 
> 
> Carl Banks

As I remember, you didn't need the whitespace either. IIRC, your example 
above could have been written as:

      PROGRAMKWDS
      REALREAL,WRITE
      WRITE=1.0
      REAL=2.0
      WRITE(*,*)WRITE,REAL
      END

and worked just as well.  I have nightmares thinking about writing a 
fortran parser.  Oh yeah, spaces were the same as zeros on input, too.  
What a wonderful language.

Isn't it wonderful how nothing you write ever gets lost once google gets 
it's hands on it:

http://mirrorspace.org/python/doc/humor/index.html#habits

(personally, I think the one about the little girl buying a wabbit in the 
pet store is the best of the collection).


From vatamane at gmail.com  Fri Sep 29 04:16:24 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 29 Sep 2006 01:16:24 -0700
Subject: analyzing removable media
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
Message-ID: <1159517784.680533.178870@i42g2000cwa.googlegroups.com>

glenn wrote:
> Hi
> can anyone tell me how given a directory or file path, I can
> pythonically  tell if that item is on 'removable media', or sometype of
> vfs, the label of the media (or volume) and perhaps any other details
> about the media itself?
> thanks
> Glenn

It won't be trivial because one of the goals of the operating systems
is to hide the differences between various types of storage devices and
make them all look the same (i.e. a jump drive, a CD-ROM, a network
volume are presented uniformly to the user as just another path in the
file system).

But you can probably use guesswork on unix OS's, as somebody above
suggested, and examine the path. If the path contains common media
mount points then that should give you a clue. On Windows you cannot
easily know. For example if your file is on D:\file.txt, it is not
immediatly obvious if D is a jumpdrive, a networked drive, a hard
drive, or a CD-ROM.

The only thing I can think of is to try to examine the Windows registry
with the _winreg module. Here are the docs:
http://docs.python.org/lib/module--winreg.html  There might be a key
burried in there some place that will tell you which drives are what
type.



From sanzhiyan at gmail.com  Fri Sep 22 11:25:55 2006
From: sanzhiyan at gmail.com (Saizan)
Date: 22 Sep 2006 08:25:55 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <4nibt5Fag01tU2@individual.net>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<4nibt5Fag01tU2@individual.net>
Message-ID: <1158938755.403604.91180@d34g2000cwd.googlegroups.com>


Bjoern Schliessmann wrote:
> Saizan wrote:
>
> > Why subclassing bool from int either __invert__ or __neg__ haven't
> > been overrided to produce a boolean negation?
>
> I wonder what -True or -False should evaluate to.
>
> Regards,
>
>
> Bj?rn
>
> --
> BOFH excuse #297:
>
> Too many interrupts
Well in boolean notation -True == False and  -False == True, actually
you may prefer ? or a line over the term, but since there's no such
operator in python I think we should use "-" which is also the operator
used by Bool himself in his formulation for negation which was 1-x.
Now that I think of it 1-x should work as a negation in Python, too,
since True == 1 and False == 0, but it would be a little annoying to
write expressions in this way.



From hrnetindia at yahoo.com  Wed Sep 27 03:17:43 2006
From: hrnetindia at yahoo.com (hrnetindia)
Date: Wed, 27 Sep 2006 07:17:43 -0000
Subject: Python Lead / Developers required for a Telecom Company, Hyderabad
Message-ID: <efd8in+csk8@eGroups.com>

World's No:1 Telecom Product Development (Billing Settlement) 
company urgently requires the following:

Position: Team Lead / Software Engineer

Skills:
Essential: Python
Other: Perl / XML / J2ME

Experinece: 2-5 years of experience using Python. 

Location: Hyderabad, India

Please mail the CV to hrnetindia at gmail.com

Thanks
HR Net Consultants Pvt .Ltd.
# 405 Amough Plaza ,Beside ITC Kakatiya Hotel
Begumpet,Hyderabad 500016,AP,India 
Tel :91+40-66756565 ( 4 lines)
www.hrnetindia.com







From jhefferon at smcvt.edu  Sat Sep 16 07:15:59 2006
From: jhefferon at smcvt.edu (Jim)
Date: 16 Sep 2006 04:15:59 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <1158386881.666330.246150@d34g2000cwd.googlegroups.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
Message-ID: <1158405359.258007.229910@b28g2000cwb.googlegroups.com>

Frank Millman wrote:
> I therefore use the following -
>     cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)
I use this also (although isn't it right that sometimes the name of the
sequence is not so straightforward? for instance, isn't there a limit
on the number of chars?).

Can anyone say what is an advantage of the two nextval() solutions
described earlier in this thread over the currval() solution listed
here?

Jim



From casevh at comcast.net  Thu Sep  7 15:45:56 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 7 Sep 2006 12:45:56 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <1157656285.191995.222400@m79g2000cwm.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157656285.191995.222400@m79g2000cwm.googlegroups.com>
Message-ID: <1157658356.525163.20420@i42g2000cwa.googlegroups.com>

> 1. Get MinGW gcc and/or g++, preferably via MinGW installer from [1].
> You may have to restart your computer or manually edit PATH system
> environment variable to include MinGW's bin directory (default is
> c:\mingw\bin). Then check if it is there by typing `path` in the cmd
> window.

1a. [Optional] Install MSYS, also from [1]. If your extension relies on
another C library, this may make it easier to compile that library.

>
> 2. Get pexports-0.42h.zip from [2] and extract pexports.exe file
>
> 3. Prepare MinGW compatible .a library file
>    pexports.exe c:\WINDOWS\system32\python24.dll > python24.def
>    c:\mingw\bin\dlltool.exe --dllname python24.dll --def python24.def
> --output-lib libpython24.a
>
> 4. Place the new libpython24.a file in the Python's libs directory (but
> not in the Lib dir), default is c:\python24\libs

I believe steps 2 through 4 are only required for Python 2.3 or
earlier. I have not needed to do those steps for Python 2.4 and 2.5.

>
> 5. Build your extension by executing your setup script with
> `--compiler=mingw32` parameter.
>    python setup.py build --compiler=mingw32
>
> Additionally you may wish to put a distutils.cfg file in the
> c:\python\lib\distutils dir containing following entries:
> [build]
> compiler = mingw32
>
> This will tell the distutils script to use MinGW compiler by default
> when executing `python setup.py build` command.
>
> best,
> fw
>
> [1] http://sourceforge.net/projects/mingw/
> [2] http://starship.python.net/crew/kernr/mingw32/pexports-0.42h.zip



From aahz at pythoncraft.com  Fri Sep 15 00:36:21 2006
From: aahz at pythoncraft.com (Aahz)
Date: 14 Sep 2006 21:36:21 -0700
Subject: What's more pythonic?
References: <pan.2006.09.13.04.08.11.294080@dcs.nac.uci.edu>
Message-ID: <eedak5$ptb$1@panix3.panix.com>

In article <pan.2006.09.13.04.08.11.294080 at dcs.nac.uci.edu>,
Dan Stromberg  <strombrg at dcs.nac.uci.edu> wrote:
>
>Is sample1 or sample2 the more pythonic way of comparing?

Depending on what versions of Python you're targetting, some people
would argue neither (advocating the deprecation of __cmp__).  I'm not
sure what the current status of __cmp__ is for Python 3.0.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From steve at holdenweb.com  Thu Sep 28 16:04:01 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 21:04:01 +0100
Subject: preemptive OOP?
In-Reply-To: <xkVSg.49$1n3.537@news.tufts.edu>
References: <e9USg.47$1n3.432@news.tufts.edu> <451c1a6d$1@nntp.zianet.com>
	<xkVSg.49$1n3.537@news.tufts.edu>
Message-ID: <efh9pu$b6t$1@sea.gmane.org>

John Salerno wrote:
> Erik Johnson wrote:
> 
> 
>>    My feeling is that there is no good reason to add the complexity of your
>>own custom classes if they provide no additional data or behaviour. If you
>>know you have plans to add your own attributes and/or methods to MyNotebook
>>soon, there's no harm in doing this now, but why? You can always create your
>>own custom subclass at the point when you have something of value to add and
>>through the mircale of polymorphism, it will function everywhere a Notebook
>>would.
> 
> 
> I think you're right. In fact, one thing I always loved about Python was 
> that OOP is optional, and here I am trying to force it upon myself 
> unnecessarily! :)

However, if you want to simplify the code, you could start by saying

     myNotebook = wx.Notebook

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From antroy at gmail.com  Fri Sep 22 04:58:24 2006
From: antroy at gmail.com (Ant)
Date: 22 Sep 2006 01:58:24 -0700
Subject: Don't use regular expressions to "validate" email addresses (was:
	I need some help with a regexp please)
In-Reply-To: <mailman.433.1158887242.10491.python-list@python.org>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<mailman.433.1158887242.10491.python-list@python.org>
Message-ID: <1158915504.159622.154230@m7g2000cwm.googlegroups.com>


Ben Finney wrote:
...
> The best advice I've seen when people ask "How do I validate whether
> an email address is valid?" was "Try sending mail to it".

There are advantages to the regex method. It is faster than sending an
email and getting a positive or negative return code. The delay may not
be acceptable in many applications. Secondly, the false negatives found
by a reasonable regex will be few compared to the number you'd get if
the smtp server went down, or a remote relay was having problems
delivering the message etc etc.

>From a business point of view, it is probably more important to reduce
the number of false negatives than to reduce the number of false
positives - every false negative is a potential loss of a customer.
False positives? Who cares really as long as they are paying ;-)



From fredrik at pythonware.com  Wed Sep 20 07:32:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 20 Sep 2006 13:32:49 +0200
Subject: high level, fast XML package for Python?
In-Reply-To: <450CF5CF.3090109@v.loewis.de>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<450CF5CF.3090109@v.loewis.de>
Message-ID: <eer8t2$v44$1@sea.gmane.org>

Martin v. L?wis wrote:

>> Is there a standard xml package for Python? Preferably high-level, fast
>> and that can parse in-file, not in-memory since I  have to deal with
>> potentially MBs of data. 
> 
> It seems that everybody is proposing libraries that use in-memory
> representations. There is a standard xml package for Python, it's
> called "xml" (and comes with the standard library). It contains a
> SAX interface, xml.sax, which can parse files incrementally.

note that the requirements included "high-level" and "fast"; sax is 
low-level, error-prone, and once you've finally fixed all the remaining 
bugs in your state machine, not that fast, really.

</F>



From lutz at rmi.net  Sat Sep 30 15:11:41 2006
From: lutz at rmi.net (Mark Lutz)
Date: 30 Sep 2006 12:11:41 -0700
Subject: Mark Lutz Python interview
References: <1159554334.170062.182720@i3g2000cwc.googlegroups.com>
	<1159561253.807662.309910@h48g2000cwc.googlegroups.com>
Message-ID: <1159643501.320802.262970@i3g2000cwc.googlegroups.com>


Fuzzyman wrote:
> Mark Lutz wrote:
> > Python author and trainer Mark Lutz will be interviewed
> > on the radio show Tech Talk this Sunday, October 1st,
> > at 6PM Eastern time.  He'll be answering questions about
> > Python, his books, and his Python training services.
> >
>
> Does he always talk in the third person ? ;-)

Yes, I've heard that he does. :-)



From lists at fabis-site.net  Tue Sep 26 12:41:53 2006
From: lists at fabis-site.net (Fabian Steiner)
Date: Tue, 26 Sep 2006 18:41:53 +0200
Subject: Splitting device addresses into parts
Message-ID: <efbl8h$kf2$03$1@news.t-online.com>

I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
simple way to achieve this? So far I am using regular expressions but I
would like to avoid them ...

Regards,
Fabian Steiner


From steve at holdenweb.com  Sat Sep  9 07:17:48 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 09 Sep 2006 12:17:48 +0100
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157782714.618336.148840@e3g2000cwe.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<44fd309b$0$306$626a54ce@news.free.fr>	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>	<mailman.185.1157755145.5279.python-list@python.org>
	<1157782714.618336.148840@e3g2000cwe.googlegroups.com>
Message-ID: <edu7rp$gq2$2@sea.gmane.org>

mensanator at aol.com wrote:
> Paul McNett wrote:
> 
>>mensanator at aol.com wrote:
>>
>>>Do you know what INNER JOIN means?
>>>
>>>Do you know how important it is to a relational database?
>>>
>>>Can you explain how an INNER JOIN can even work, in theory,
>>>with dynamic data types?
>>
>>Let's stop the pissing contest and just see how it works. After all,
>>this is Python and we can easily just try it out. Here's my example.
>>Please tell me how this causes unexpected results,
> 
> 
> When we use a best case scenario, we get what we expect.
> 
> 
>>and why it isn't SQL.
> 
> 
> It isn't SQL simply because SQL won't let you insert text
> into a numeric field.
> 
Yup, I have to agree that's pretty crappy. (Makes mental note to limit 
use of SQLite).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From scott.daniels at acm.org  Fri Sep 22 19:04:25 2006
From: scott.daniels at acm.org (Scott David Daniels)
Date: Fri, 22 Sep 2006 16:04:25 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.388.1158090546.5279.python-list@python.org>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>	<mailman.384.1158087083.5279.python-list@python.org>	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>
	<mailman.388.1158090546.5279.python-list@python.org>
Message-ID: <4514645e$1@nntp0.pdx.net>

Fredrik Lundh wrote:
>... dynamic typing != random typing.

So true.  To get a really good random typing going, you need a
cryptographically strong random number generator to feed the
application of type constructors to values during the execution
of a program.  Perhaps the best way to do this is to modify the
the interpreter.  We could call the new language "Python?!", or
actually use an interobang if Unicode has such a character.

--Scott David Daniels
scott.daniels at acm.org


From gagsl-py at yahoo.com.ar  Sat Sep 23 05:57:58 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 23 Sep 2006 06:57:58 -0300
Subject: Application logging to screen and file - any favorite
	modules (no luck on cheeseshop)
In-Reply-To: <4nkdflFaj5doU1@individual.net>
References: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
	<4nkdflFaj5doU1@individual.net>
Message-ID: <7.0.1.0.0.20060923064733.051d2658@yahoo.com.ar>

At Saturday 23/9/2006 06:35, Bjoern Schliessmann wrote:

> > Hello, I am looking for a module which has
> > * log levels
> > * output to stdout and file (either/or based on config)
> > * nicely formatted log output (e.g., indentation when appropriate)
>
>Sorry for being nosey, but how'd you use indentation in a log?

I do - what's wrong? Imagine the following on a single line...

[328] 2006-09-23T06:41:50 BLATHER(-100) VerboseSecurity Unauthorized: Your
[328]     user account does not have the required permission.  Access to
[328]     'manage_main' of (Folder instance at 033C8290) (/Softlab/otros)
[328]     denied. Your user account, softlab, exists at /acl_users. Access
[328]     requires one of the following roles: ['Softlab']. Your roles in this
[328]     context are ['Authenticated', 'Manager', 'Owner'].



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From fcorreia at gmail.com  Wed Sep 27 10:59:12 2006
From: fcorreia at gmail.com (Filipe)
Date: 27 Sep 2006 07:59:12 -0700
Subject: Decoding group4 tiff with PIL
Message-ID: <1159369152.751796.127670@m73g2000cwd.googlegroups.com>

Is decoding group4 tiff possible with Python Imaging Library?
I'm trying to convert some image files (several formats, among which,
G4 tiffs) to PNG but everything I read about it seems to indicate PIL
doesn't support group4 encoding, and won't support it in the short
term.

yet, I found something[1] that seems like some sort of plugin for PIL
and that does look promising, although it seems to be in a bit of an
alpha state. However, I don't know where to start.. Should I copy
libtiff.py to some location?

Also found an alternative[2] to PIL, but I'd rather have PIL doing
everything, no matter the format of the file read, if possible. Haven't
tried this alternative yet.

[1] http://effbot.python-hosting.com/file/stuff/sandbox/pil/libtiff.py
[2] http://www.haynold.com/software_projects/2004/pytiff/

Any thoughts?

Cheers,
Filipe



From crosseyedpenguin at cox.net  Thu Sep 14 16:43:08 2006
From: crosseyedpenguin at cox.net (Roger)
Date: Thu, 14 Sep 2006 13:43:08 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1158206057.688002.144980@i42g2000cwa.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
Message-ID: <4509BEDC.9090100@cox.net>

Jay wrote:
> I, too, am a hardcore fan of jEdit.  It's nice to finally see some user
> support on this forum.  :-)


The biggest problem I have with anything written in Java is the long 
startup time.  The editor may be great but the platform is mediocre.

I am a SciTE bigot.  I have recently tried SPE and UliPad.  UliPad would 
be my second choice and is still installed, but SPE was quickly removed. 
  One feature I like about SciTE is being able to position the cursor 
anywhere on a word and hit CTL-F to find the NEXT occurrence.

With UliPad, you have to select the entire word you want to search for, 
and then when you hit CTL-F -- it first finds the same occurrence you 
selected -- you have to hit F3 to find the next.

I think SciTE is better engineered.  Still, much of your choice is 
personal preference.  I have noticed that any two people using the same 
editor will use different keystroke and mouse sequences when presented 
with similar editing problems.

Good discussion - I thank the originator of the thread.

Roger





From sofiafig at gmail.com  Mon Sep 11 08:29:17 2006
From: sofiafig at gmail.com (sofiafig at gmail.com)
Date: 11 Sep 2006 05:29:17 -0700
Subject: extracting substrings from a file
Message-ID: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>

Hi,

I have a file with several entries in the form:

AFFX-BioB-5_at	 E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
dethiobiotin synthetase (bioD), complete cds.

1415785_a_at	 /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
/CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
/DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
/PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1

and I would like to create a file that has only the following:

AFFX-BioB-5_at  /GEN=bioB  /gb:J04423.1

1415785_a_at	 /gb:NM_009840.1 /GEN=Cct8

Could anyone please tell me how can I do it?

Many thanks in advance
Sofia



From tim.peters at gmail.com  Sun Sep 17 14:46:45 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Sun, 17 Sep 2006 14:46:45 -0400
Subject: Hardlinks on NTFS
In-Reply-To: <76fd5acf0609171131t3378018bqbe734307dfe0045@mail.gmail.com>
References: <450D81BB.20005@freakmail.de>
	<76fd5acf0609171131t3378018bqbe734307dfe0045@mail.gmail.com>
Message-ID: <1f7befae0609171146o2150925dk729b20b22a56a1de@mail.gmail.com>

[Wildemar Wildenburger]
>> I'm thinking of letting my program create hardlinks (or symlinks). I
>> know python allows doing this for ext, reiser and the like, but
>> apparently not for ntfs systems.
>> Is there any package out there that lets me create links in a platform
>> independent way?

[Calvin Spealman]
> Why isn't NTFS handled the same as any other hardlink supporting
> filesystem? Is it a choice or a bug?

None of the above.  It's not the filesystem, it's what the platform C
supports.  POSIX specifies a small pile of standard routines for
manipulating hard and symbolic links, and Python exposes those /when/
they're available.  Microsoft's C supplies none of them.

So it's a question of someone on Windows wanting this enough to
volunteer to write code, tests, and docs, and volunteer to maintain, a
pile of Microsoft-specific code to provide workalike functionality on
Windows.


From Alain.montmory at thalesgroup.com  Fri Sep 29 11:26:29 2006
From: Alain.montmory at thalesgroup.com (alain MONTMORY)
Date: Fri, 29 Sep 2006 17:26:29 +0200
Subject: "ValueError: Empty module name" on basic import
In-Reply-To: <1159541352.702121.246240@i3g2000cwc.googlegroups.com>
References: <mailman.931.1159533172.10491.python-list@python.org>
	<1159541352.702121.246240@i3g2000cwc.googlegroups.com>
Message-ID: <451D3B25.5090307@thalesgroup.com>

Thank for your response  :-)

I have tried (it's my first try ..)  :

./TestOfficiel TestPythonFoo multiply 3 2

and i get :
[montmory at esoppe1 swigCallPython]$ ./TestOfficiel TestPythonFoo multiply 3 2
ImportError: No module named TestPythonFoo
Failed to load "TestPythonFoo"

Then i tried what you suggest below :
[montmory at esoppe1 swigCallPython]$ python
Python 2.3.4 (#2, Aug 19 2004, 15:49:40)
[GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> __import__("TestPythonFoo")
<module 'TestPythonFoo' from 'TestPythonFoo.pyc'>

and it works !!!
why this doesn't work with the api

pModule = PyImport_Import(pName);


pModule is null after the call


is there a PYTHONPATH to set or semething else...

thanks

Alain

John Machin a ?crit :
> alain MONTMORY wrote:
>   
>> Hello everybody,
>>
>> I am a newbie to python so I hope I am at the right place to expose my
>> problem..... :-[
>>
>> I am working on linux mandrake 10.1 with python :
>> python -V
>> Python 2.3.4
>> I am trying o run the example which stay in the documentation in paragraph
>> http://www.python.org/doc/2.4.2/ext/pure-embedding.html 5.3 Pure Embedding
>> I download the code example from
>> http://www.python.org/doc/2.4.2/ext/run-func.txt
>> I call the file "TestOfficiel.c" and I compile it with :
>> gcc -g -I/usr/include/python2.3/ TestOfficiel.c -o TestOfficiel
>> -lpython2.3 -ldl
>> all is OK (or seems to be...).
>> as stated in the documentation  I creat a file "TestPythonFoo.py" which
>> contain
>> "
>> def multiply(a,b):
>>     print "Will compute", a, "times", b
>>     c = 0
>>     for i in range(0, a):
>>         c = c + b
>>     return c
>> "
>> I launch
>> ./TestOfficiel ./TestPythonFoo.py multiply 3 2
>> and as a result :
>> ValueError: Empty module name
>> Failed to load "./TestPythonFoo.py"
>>     
>
> This is (I believe) because of the "." at the front.
>
>   
>> if I try an absolute path to the python file :
>> ./TestOfficiel `pwd`/TestPythonFoo.py multiply 3 2
>> I obtain :
>> ImportError: No module named
>> /space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py
>>     
>
> It's quite correct, there never could be a module named that. The name
> of your module is TestPythonFoo -- so all you should have to do is
>     ./TestOfficiel TestPythonFoo multiply 3 2
>
>   
>> Failed to load
>> "/space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py"
>>     
>
>
>   
>> Of course the file exist :
>> [montmory at esoppe1 swigCallPython]$ ll
>> /space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py
>> -rwxrwx--x  1 montmory esoppe 126 sep 29 14:04
>> /space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py*
>>
>> I found lot of post about "ValueError: Empty module name" but no clear
>> solution (clear for me...).
>> What's wrong ?
>> my python version?
>> Additionnal informations :
>> gcc version 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)
>>
>> Thanks for your help,
>>
>> best regards,
>>
>> Alain
>>
>>
>>
>>
>> --------------070105030901000008070407
>> Content-Type: text/plain
>> Content-Disposition: inline;
>> 	filename="TestOfficiel.c"
>> X-Google-AttachSize: 2022
>>
>> #include <Python.h>
>>
>> int
>> main(int argc, char *argv[])
>> {
>>     PyObject *pName, *pModule, *pDict, *pFunc;
>>     PyObject *pArgs, *pValue;
>>     int i;
>>
>>     if (argc < 3) {
>>         fprintf(stderr,"Usage: call pythonfile funcname [args]\n");
>>     
>
> "pythonfile" is confusing; it should be "modulename".
>
>
>   
Yes you are right, but i left the example file "as it is"
>>         return 1;
>>     }
>>
>>     Py_Initialize();
>>     pName = PyString_FromString(argv[1]);
>>     /* Error checking of pName left out */
>>
>>     pModule = PyImport_Import(pName);
>>     
>
> As the docs for this function say, it just calls the same routine that
> is called by the __import__ built-in function. One can experiment with
> that:
>
>
> OS-prompt>copy con foo.py
> print 'hello fubar world'
> ^Z
>         1 file(s) copied.
>
> OS-prompt>python
> Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
> on win32
> Type "help", "copyright", "credits" or "license" for more information.
>   
>>>> __import__("foo")
>>>>         
> hello fubar world
> <module 'foo' from 'foo.py'>
>   
>>>> __import__("foo.py")
>>>>         
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ImportError: No module named py
>   
>>>> __import__("")
>>>>         
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: Empty module name
>   
>>>> __import__(r".\foo")
>>>>         
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: Empty module name
>   
>>>> __import__(r"./foo")
>>>>         
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: Empty module name
>   
>>>> __import__(r"/foo")
>>>>         
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ImportError: No module named /foo
>   
>>>> __import__(r".foo")
>>>>         
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: Empty module name
>   
>
> Hmmm ... "empty module name" is rather misleading when it starts with a
> "." -- I can feel a bugfix^^^^^^ enhancement request coming on :-)
>
> HTH,
> John
>
>   
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From skip at pobox.com  Mon Sep 25 13:42:41 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 12:42:41 -0500
Subject: Emphasizing a gtk.Label
In-Reply-To: <ef91fd$ngg$1@hefestos.uned.es>
References: <ef91fd$ngg$1@hefestos.uned.es>
Message-ID: <17688.5393.88012.517580@montanaro.dyndns.org>


    >> I want to give some emphasis to a Label from gtk, without breaking
    >> gnome theme... What would be the best solution?

Maybe:

    mylabel.set_markup("""<span weight="bold">My Label</span>""")

?  For more details, check out the PyGTK docs for the Label widget:

    http://www.moeraki.com/pygtkreference/pygtk2reference/class-gtklabel.html

and the Pango markup language:

    http://www.moeraki.com/pygtkreference/pygtk2reference/pango-markup-language.html

Skip


From larry at hastings.org  Fri Sep 29 12:15:22 2006
From: larry at hastings.org (Larry Hastings)
Date: 29 Sep 2006 09:15:22 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <mailman.955.1159545644.10491.python-list@python.org>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
	<mailman.932.1159533269.10491.python-list@python.org>
	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>
	<mailman.948.1159542291.10491.python-list@python.org>
	<1159545255.339364.299020@k70g2000cwa.googlegroups.com>
	<mailman.955.1159545644.10491.python-list@python.org>
Message-ID: <1159546522.251704.301530@b28g2000cwb.googlegroups.com>

Fredrik Lundh wrote:
> >> what's in "s" when that loop is done?
> > It's equivalent to " 'a' * 10000000 ".  (I shan't post it here.)
> but what *is* it ?  an ordinary PyString object with a flattened buffer,
> or something else ?

At the exact moment that the loop is done, it's a
PyStringConcatenationObject * which points to a deep one-sided tree of
more PyStringConcatenationObject * objects.  Its ob_sval is NULL, which
means that the first time someone asks for its value (via the macro
PyString_AS_STRING()) it will be computed.  When it's computed, the
interpreter will allocate a buffer of 10000001 bytes and walk the tree,
filling the buffer with ten million 'a's followed by a zero.  It'll
then dereference all its children.

The PyStringConcatenationObject struct is a child of PyStringObject,
and external users can ignore the difference as long as they use the
macros in stringobject.h (e.g. using PyString_AS_STRING(), rather than
casting to PyStringObject and using ob_sval directly).

Sorry for misunderstanding the nature of your question the first time,


/larry/



From arvind.sachivan at in.bosch.com  Wed Sep  6 02:17:52 2006
From: arvind.sachivan at in.bosch.com (Aravind)
Date: Wed, 6 Sep 2006 11:47:52 +0530
Subject: IDE
Message-ID: <edlp29$6uf$1@news4.fe.internet.bosch.com>

hi,

i am a newbie to python but used with some developement in c++ and VB. Can
anyone suggest me a good IDE for python for developing apps...? i've seen Qt
designer.. some of my friends said it can be used for python also but they r
not sure.

pls help...

thanks in advance....




From steven.bethard at gmail.com  Sat Sep  9 13:25:26 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 09 Sep 2006 11:25:26 -0600
Subject: Request for tips on my first python script.
In-Reply-To: <mailman.148.1157679775.5279.python-list@python.org>
References: <mailman.148.1157679775.5279.python-list@python.org>
Message-ID: <uIWdnWkeK6CbZJ_YnZ2dnUVZ_vmdnZ2d@comcast.com>

Lex Hider wrote:
>     try:
>         opts, args = getopt.getopt(sys.argv[1:], "l:", 
> ["latest=", "notfound"])
>     except getopt.GetoptError:          
>         sys.exit(2)                     
>         #usage()                         
>     
>     for opt, arg in opts:
>         if opt in ("-l", "--latest"):
>             latest = int(arg)
>         elif opt in ("--notfound"):
>             ignoreNotFound = True #add notfound files to log 

You should definitely consider using optparse or argparse_.  Here's a 
rewrite using argparse::

     parser = argparse.ArgumentParser(description='podcast aggregator')
     parser.add_argument('-l', '--latest', type=int)
     parser.add_argument('--notfound', action='store_true')
     values = parser.parse_args()

Then just use ``values.latest`` and ``values.notfound`` instead of 
``latest`` and ``ignoreNotFound`` in the rest of your code.  Using 
argparse also allows you to easily add your other directories as command 
line options, e.g.::

     parser.add_argument('podDir', nargs='?',
                         default=os.path.join(HOME, 'Podcasts'))

If you then use ``values.podDir`` instead of ``podDir`` throughout your 
code, your users can invoke your script in either of the following ways::

     GodCast.py                # no args, use "$HOME/Podcasts"
     GodCast.py podcast_dir    # podDir specified, use "podcast_dir"

If I were writing your script, I would add optional or positional 
arguments for all of ``maxChecksPerDay``, ``myTemp``, ``downDir``, 
``logFile``, ``cacheDir`` and ``feedList``.

(If you'd like your code to look more like the Python "standard", I'd 
use `PEP 8`_ compliant names, e.g. ``pod_dir`` instead of ``podDir`` and 
``make_dirs`` instead of ``makeDirs``.)

.. _argparse: http://argparse.python-hosting.com/
.. _PEP 8: http://www.python.org/dev/peps/pep-0008/

HTH,

STeVe


From jmike at alum.mit.edu  Fri Sep 22 12:02:49 2006
From: jmike at alum.mit.edu (jmike at alum.mit.edu)
Date: 22 Sep 2006 09:02:49 -0700
Subject: XML parser that sorts elements?
In-Reply-To: <4niermFadrl8U1@uni-berlin.de>
References: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>
	<4niermFadrl8U1@uni-berlin.de>
Message-ID: <1158940969.102922.69460@h48g2000cwc.googlegroups.com>


Diez B. Roggisch wrote:

> You can sort them by obtaining them as tree of nodes, e.g. using element
> tree or minidom.
>
> But you should be aware that this will change the structure of your document
> and it isn't always desirable to do so - e.g. html pages would look funny
> to say the least if sorted in that way.
>
> Diez

In this particular case, I need to sort the elements, and the specific
application I'm testing guarantees that the order of the elements "in
the same scope" (this may not be the right term in XML semantics, but
it's what I know how to say) does not matter.  That probably means that
the specific application I'm testing is not using XML in a standard
way, but so be it.

I'm looking at minidom now and I think maybe there's enough
documentation there that I can get a handle on it and do what I need to
do.  Thanks.  (But if anyone else has a specific example I can crib
from, that'd be great.)

--JMike



From p.lavarre at ieee.org  Tue Sep 26 15:00:04 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 26 Sep 2006 12:00:04 -0700
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <mailman.630.1159251019.10491.python-list@python.org>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
Message-ID: <1159297203.610395.173710@i3g2000cwc.googlegroups.com>

> >Q: The C idea of (pv != NULL) is said most directly in Python ctypes
> >how?
>
> Perhaps reading the ctypes tutorial? (both in the 2.5 docs and in
> <http://starship.python.net/crew/theller/ctypes/tutorial.html>)

Actually, no.  I see three answers or zero, depending on how you like
to count.

Yes that flat edition helps makes this clear, thank you - there I can
more easily grab an ordered list of all matches of text than in the
more prominent shadow:
http://docs.python.org/dev/lib/module-ctypes.html

I see direct discussion only of how to construct null pointers, no
discussion of how to test for them.  Specifically:

The hint { bool(null_ptr) == False } could be read to mean try ==
False, in the "Pointers" text.

The hint { ("values", POINTER(c_int))] ... bar.values = None } could be
read to say try == None, in the "Calling functions" text.

The hint { if item.name is None } could be read to say try is None, in
the "Accessing values exported from dlls" text.

I'm such a Python newbie that I didn't know is None existed alongside
== None.

I guess I'll next dig into that along with the answer below from CTypes
author Thomas Heller.



From swell at netcourrier.com  Thu Sep 21 10:05:39 2006
From: swell at netcourrier.com (swell at netcourrier.com)
Date: 21 Sep 2006 07:05:39 -0700
Subject: Tk eventloop
Message-ID: <1158847539.514578.146830@e3g2000cwe.googlegroups.com>

Hi
I try/struggle to use an ActiveX component in a Tk app. When i execute
it i can catch the first event and then when i try to change the value
of the w widget everything blocks and nothing is updated anymore.

Does someone have an idea of what is wrong and how to smartly integrate
these events with the Tk event loop.

Thx
Manu

import win32com.client
import pythoncom
import MyComponent
from Tkinter import *

class Event1(MyComponent.IEvents):
    def OnUpdate(self, ItemName, UserTag):
        global w
        v = ptrAx.getV(ItemName)
        print "%s" % v
        w.configure(text='a')

root = Tk()
w = Label(root,text="test")
w.pack()

ptrAx = win32com.client.DispatchWithEvents(r'MyComponent',Event1)
ptrAx.StartUpdates()

root.mainloop()



From mail at microcorp.co.za  Sun Sep  3 06:29:22 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sun, 3 Sep 2006 12:29:22 +0200
Subject: Tkinter listbox and ftputil
References: <1157119078.055806.7750@h48g2000cwc.googlegroups.com>
	<mailman.10281.1157184702.27775.python-list@python.org>
	<1157216128.331707.174070@e3g2000cwe.googlegroups.com>
Message-ID: <012e01c6cf44$45327be0$03000080@hendrik>

 <vedran_dekovic at yahoo.com> wrote by email:

Please keep it on the list...

| Hi,
| Hi and Thanks for all your help,everything work.But I have one
| question,in string I am "new",and I don't know how to exactly split:
|
| example:
|
| '-rw-r--r--   1 admin at v-programs.byethost31.com
| v-programs.byethost31.com     2376 Aug 28 08:48 sun.gif'
|
|
| in new entry must write just filename:  sun.gif not:
|
| '-rw-r--r--   1 admin at v-programs.byethost31.com
| v-programs.byethost31.com     2376 Aug 28 08:48 sun.gif'
|
| .... so can you help to I split:
|
| '-rw-r--r--   1 admin at v-programs.byethost31.com
| v-programs.byethost31.com     2376 Aug 28 08:48 sun.gif'   from that
| import just: sun.gif
|
|                                                               THANK
| YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

IDLE 1.1.3      ==== No Subprocess ====
>>> NameOfString = '-rw-r--r--   1 admin at v-programs.byethost31.com
v-programs.byethost31.com     2376 Aug 28 08:48 sun.gif'
>>> NameOfList = NameOfString.split()
>>> print NameOfList[:]
['-rw-r--r--', '1', 'admin at v-programs.byethost31.com',
'v-programs.byethost31.com', '2376', 'Aug', '28', '08:48', 'sun.gif']
>>> print NameOfList[-1]
sun.gif
>>>

That should see you on yer way... - Have you read the tutorial?

You should also learn to use the interactive interpreter - it is your friend...

- Hendrik





From gagsl-py at yahoo.com.ar  Thu Sep 21 05:25:12 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 06:25:12 -0300
Subject: how to use timer in python
In-Reply-To: <eetlv6$8jd$1@news.cn99.com>
References: <eetlv6$8jd$1@news.cn99.com>
Message-ID: <7.0.1.0.0.20060921062043.05853c48@yahoo.com.ar>

At Thursday 21/9/2006 06:03, yxh wrote:

>how to use timer in python.
>the functionnality is like the MFC SetTimer()

Use the Timer class.


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From simon at brunningonline.net  Tue Sep 26 06:10:42 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 26 Sep 2006 11:10:42 +0100
Subject: where are isinstance types documented?
In-Reply-To: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
Message-ID: <8c7f10c60609260310h64c4853ajfe7736748c9ed1ef@mail.gmail.com>

On 26 Sep 2006 02:59:07 -0700, codefire <tony.bedford at gmail.com> wrote:
> I'm using the isinstance built-in function. I've found the docs for it,
> but there are no docs on the supported types.
>
> For example isinstance(a, int) works fine but isinstance(s, string)
> doesn't - because 'string is not known'.

In this case, you want "str" rather than "string".

I can't find a single page with a list of built-in types (which
doesn't mean that one doesn't exist) but I think you can find them all
hanging off this page: <http://docs.python.org/lib/types.html>.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From jeff at taupro.com  Thu Sep 28 01:28:05 2006
From: jeff at taupro.com (Jeff Rush)
Date: Thu, 28 Sep 2006 00:28:05 -0500
Subject: Be Paid to Attend PyCon 2007!
Message-ID: <451B5D65.4010102@taupro.com>

PyCon 2007, to be held in Dallas at the same location as in 2006, is coming up 
and we need instructors to fill Tutorial Day on Feb 22.  Last year we had 
tutorials for:

   Python 102
   Internet Programming with Python
   Getting Started with wxPython
   Text & Data Processing
   Plone Rapid Bootcamp
   Using Databases with Python
   A Game-Free Introduction to PyGame
   Getting Started with the Twisted Framework
   Agile Development and Testing in Python

Classes are half-day affairs (3-hours with a 15-min break) and net the 
instructor $500-$1500 (depending upon enrollment).  One or two of those would 
easily cover your expenses for attending PyCon and then some.  And since 
tutorials are held the day BEFORE the main conference, you won't miss any 
talks either.

Tutorials have more stringent requirements than talks, often providing class 
handouts and finely tuned presentations.  For this reason we want the best.

And if you're short on topic ideas, or a potential student who would like a 
specific topic covered, check out our wiki page at

   http://us.pycon.org/TX2007/TalkIdeas

Instructors, email your (plain text) proposals, 250 to 1000 words long, to 
<pycon at python.org>.  The deadline for submissions is _Nov 15_ with an 
acceptance decision by Nov 22.  Your proposal should cover:

   * Instructor name(s)
   * Contact Information
   * Summary of proposed presentation
   * Presentation outline
   * Intended audience (non-programmers, beginning programmers,
     advanced users, core Python developers, etc.)
   * (Recommended) At least one previous presentation/teaching
     engagement reference

So get cranking and let us see your best.

Jeff Rush
PyCon 2007 Co-Chair



From knipknap at gmail.com  Mon Sep 18 11:46:59 2006
From: knipknap at gmail.com (Samuel)
Date: 18 Sep 2006 08:46:59 -0700
Subject: Creating database structures in a portable way
Message-ID: <1158594419.579160.194570@m73g2000cwd.googlegroups.com>

Hi,

I am looking for a library that takes an XML file that specifies a
table structure, and generates the CREATE/DROP/ALTER SQL statements to
create the tables in the database.

In particular, I am trying to port a PHP application that currently
uses the AdoDB XML schema:

> http://phplens.com/lens/adodb/docs-datadict.htm#xmlschema

Is there a way to do something similar with the DB-API modules in
Python?

Thanks,
-Samuel



From andychambers2002 at yahoo.co.uk  Thu Sep 14 07:27:23 2006
From: andychambers2002 at yahoo.co.uk (andychambers2002 at yahoo.co.uk)
Date: 14 Sep 2006 04:27:23 -0700
Subject: Force sleep to ignore interrupts
References: <1158230884.705465.17010@k70g2000cwa.googlegroups.com>
	<eebchd$kb4$1@scorpius.csx.cam.ac.uk>
Message-ID: <1158233243.911621.240570@h48g2000cwc.googlegroups.com>

Jeremy Sanders wrote:

> andychambers2002 at yahoo.co.uk wrote:
>
> > It works as I want when used in the main application thread.
> > That is, when you hit Ctr + C, it stops running.  However, if
> > the class that subclasses it, also subclasses Thread, it breaks
> > in that hitting Ctrl + C interrupts the call to sleep which puts
> > the event loop out of sync with real time.
>
> Maybe you could install a signal handler to ignore ctrl+c, when required
>
> import signal
> signal.signal(signal.SIGINT, signal.SIG_IGN)

That worked nicely.  Thanks

Andy



From mail at microcorp.co.za  Tue Sep 12 02:34:15 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Tue, 12 Sep 2006 08:34:15 +0200
Subject: Pyserial problem. script stops reading.
Message-ID: <022601c6d63f$88e17b00$03000080@hendrik>

"Frederic Wenzel" <fred at osuosl.org> Wrote:

>On 9/9/06, Frederic Wenzel <freeed at gmail.com> wrote:
>> On 9/9/06, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
>> > | I wrote a script on Linux that uses pyserial to read status messages
>> > | from a serial line using readlines(). For now, it just displays what
>> > | it gets on stdout:
>> > | (...)
>> > | ser = serial.Serial(port=1,
>> > |                                  baudrate=1200,
>> > |                                  rtscts=1,
>> > |
>> > | If the script does not time out there, I am not sure what else it is
>> > | doing. It seems to be in a wait state it does not get out of.
>
>When it stopped working again (unfortunately) I pressed ctrl c and got the
following output?
>
>14:53 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --752
>14:53 | 0005 | 02 |   | 2  |Rack Abs.|  -  | 00752
>14:53 | 0008 | 02 |Traceback (most recent call last):
>  File "serialhandler.py", line 34, in ?
>    lines = sh.readLines()
>  File "serialhandler.py", line 29, in readLines
>    return self.ser.readlines()
>  File "/usr/lib/python2.3/site-packages/serial/serialutil.py", line 78, in
readlines
>    line = self.readline(eol=eol)
>  File "/usr/lib/python2.3/site-packages/serial/serialutil.py", line 60, in
readline
>    c = self.read(1)
>  File "/usr/lib/python2.3/site-packages/serial/serialposix.py", line 269, in
read
>    ready,_,_ = select.select([self.fd],[],[], self._timeout)
>KeyboardInterrupt
>
>
>Apparently this is the place where it gets stuck. The select.select
>line does not return, not even for a timeout.
>
>Fred

This seems a real PITA - it looks normal to me - it is as if the device has
simply stopped sending for some reason.  Can you:

1) set the external device up to ignore flow control?
2) check the cable for loose connections - wriggling it around while the
transmission is running might point at something - but be gentle - else you can
easily draw false conclusions, or break something that is in fact ok...

does anybody else know how to check the value of the time out, what its for and
what happens when it times out?

- hth - Hendrik

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From bignose+hates-spam at benfinney.id.au  Wed Sep 27 20:04:13 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 28 Sep 2006 10:04:13 +1000
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
	<1159278999.374338.76170@m73g2000cwd.googlegroups.com>
	<1159280328.671934.42180@h48g2000cwc.googlegroups.com>
	<1159285305.562672.152460@d34g2000cwd.googlegroups.com>
	<1159380986.289804.185550@b28g2000cwb.googlegroups.com>
Message-ID: <878xk4luv6.fsf@benfinney.id.au>

"Dan Bishop" <danb_83 at yahoo.com> writes:

> It's so frustrating seeing all those job postings that require a
> "mimimum 10 years experience".

I think it shows a huge gulf of communication between the person
writing the job requirements and the person who actually asked for the
position to be filled.

If someone has been doing the same thing for 10 years, they're not the
sort of programmer I want coming anywhere *near* the systems I depend
on. If, instead, they've been doing lots of different things for 10
years, I'm not a bit interested that one of them happened to be
consistent throughout that period.

-- 
 \       "Those who will not reason, are bigots, those who cannot, are |
  `\     fools, and those who dare not, are slaves."  -- "Lord" George |
_o__)                                                Gordon Noel Byron |
Ben Finney



From raschulmanxx at verizon.net  Thu Sep  7 12:56:57 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Thu, 07 Sep 2006 16:56:57 GMT
Subject: Unicode string handling problem
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
	<1157506499.619835.62950@e3g2000cwe.googlegroups.com>
	<7iesf2d82cegjj3haubc6rhcbkk3lcq230@4ax.com>
	<1157520599.406234.201050@d34g2000cwd.googlegroups.com>
Message-ID: <dki0g2ta2utaa1gig6fanp6unbj0tph72k@4ax.com>

Many thanks for your help, John, in giving me the tools to work
successfully in Python with Unicode from here on out.

It turns out that the Unicode input files I was working with (from MS
Word and MS Notepad) were indeed creating eol sequences of \r\n, not
\n\n as I had originally thought. The file reading statement that I
was using, with unpredictable results, was

#in_file =
codecs.open("c:\\pythonapps\\in-graf2.my","rU",encoding="utf-16LE")

This was reading to the \n on first read (outputting the whole line,
including the \n but, weirdly, not the preceding \r). Then, also
weirdly, the next readline would read the same \n again, interpreting
that as the entirety of a phantom second line. So each input file line
ended up producing two output lines.

Once the mode string "rU" was dropped, as in

in_file =
codecs.open("c:\\pythonapps\\in-graf2.my",encoding="utf-16LE")

all suddenly became well: no more doubled readlines, and one could see
the \r\n termination of each line.

This behavior of "rU" was not at all what I had expected from the
brief discussion of it in _Python Cookbook_. Which all goes to point
out how difficult it is to cook challenging dishes with sketchy
recipes alone. There is no substitute for the helpful advice of an
experienced chef.

-Richard Schulman
 (remove "xx" for email reply)

On 5 Sep 2006 22:29:59 -0700, "John Machin" <sjmachin at lexicon.net>
wrote:

>Richard Schulman wrote:
>[big snip]
>>
>> The BOM is little-endian, I believe.
>Correct.
>
>> >in_file = codecs.open(filepath, mode, encoding="utf16???????")
>>
>> Right you are. Here is the output produced by so doing:
>
>You don't say which encoding you used, but I guess that you used
>utf_16_le.
>
>>
>> <type 'unicode'>
>> u'\ufeffINSERT INTO [...] VALUES\N'
>
>Use utf_16 -- it will strip off the BOM for you.
>
>> <type 'unicode'>
>> u'\n'
>> 0   [The counter value]
>>
>[snip]
>> Yes, it did. Many thanks! Now I've got to figure out the best way to
>> handle that \n\n at the end of each row, which the program is
>> interpreting as two rows.
>
>Well we don't know yet exactly what you have there. We need a byte dump
>of the first few bytes of your file. Get into the interactive
>interpreter and do this:
>
>open('yourfile', 'rb').read(200)
>(the 'b' is for binary, in case you are on Windows)
>That will show us exactly what's there, without *any* EOL
>interpretation at all.
>
>
>> That represents two surprises: first, I
>> thought that Microsoft files ended as \n\r ;
>
>Nah. Wrong on two counts. In text mode, Microsoft *lines* end in \r\n
>(not \n\r); *files* may end in ctrl-Z aka chr(26) -- an inheritance
>from CP/M.
>
>Ummmm ... are you saying the file has \n\r at the end of each row?? How
>did you know that if you didn't know what if any BOM it had??? Who
>created the file????
>
>> second, I thought that
>> Python mode "rU" was supposed to be the universal eol handler and
>> would handle the \n\r as one mark.
>
>Nah again. It contemplates only \n, \r, and \r\n as end of line. See
>the docs. Thus \n\r becomes *two* newlines when read with "rU".
>
>Having "\n\r" at the end of each row does fit with your symptoms:
>
>| >>> bom = u"\ufeff"
>| >>> guff = '\n\r'.join(['abc', 'def', 'ghi'])
>| >>> guffu = unicode(guff)
>| >>> import codecs
>| >>> f = codecs.open('guff.utf16le', 'wb', encoding='utf_16_le')
>| >>> f.write(bom+guffu)
>| >>> f.close()
>
>| >>> open('guff.utf16le', 'rb').read() #### see exactly what we've got
>
>|
>'\xff\xfea\x00b\x00c\x00\n\x00\r\x00d\x00e\x00f\x00\n\x00\r\x00g\x00h\x00i\x00'
>
>| >>> codecs.open('guff.utf16le', 'r', encoding='utf_16').read()
>| u'abc\n\rdef\n\rghi' ######### Look, Mom, no BOM!
>
>| >>> codecs.open('guff.utf16le', 'rU', encoding='utf_16').read()
>| u'abc\n\ndef\n\nghi' #### U means \r -> \n
>
>| >>> codecs.open('guff.utf16le', 'rU', encoding='utf_16_le').read()
>| u'\ufeffabc\n\ndef\n\nghi' ######### reproduces your second
>experience
>
>| >>> open('guff.utf16le', 'rU').readlines()
>| ['\xff\xfea\x00b\x00c\x00\n', '\x00\n', '\x00d\x00e\x00f\x00\n',
>'\x00\n', '\x00
>| g\x00h\x00i\x00']
>| >>> f = open('guff.utf16le', 'rU')
>| >>> f.readline()
>| '\xff\xfea\x00b\x00c\x00\n'
>| >>> f.readline()
>| '\x00\n' ######### reproduces your first experience
>| >>> f.readline()
>| '\x00d\x00e\x00f\x00\n'
>| >>>
>
>If that file is a one-off, you can obviously fix it by
>throwing away every second line. Otherwise, if it's an ongoing
>exercise, you need to talk sternly to the file's creator :-)
>
>HTH,
>John


From sonaldgr8 at gmail.com  Tue Sep  5 03:12:18 2006
From: sonaldgr8 at gmail.com (sonald)
Date: 5 Sep 2006 00:12:18 -0700
Subject: =?iso-8859-1?q?How_to_allow_special_character's_like_=EF, =F9,
	acute_e_etc...?=
Message-ID: <1157440337.996056.88220@i3g2000cwc.googlegroups.com>

Dear All,
I am working on a module that validates the provided CSV data in a text
format, which must be in a predefined format.
We check for the :

1. Number of fields provided in the text file,

2. Text checks for max. length of the field & whether the field is
mandatory or optional
    Example:
                        Text('Description', 100, optional=True)
    Parameters: "Name of the field" => 'Description'
                       "Max length "        => 100
                       "Optional" => 'True' (the field is not mandaory)

3. valid-text expressions,
        Example:
            ValidText('Minor', '[yYnN]')

    Parameters:
            name    => field name
            regex   => the regular expression y/Y for Yes & n/N for No

Recently we are getting data, where, the name contains non-english
characters like: ' ATHUMANI? ', ' LUCIANA S. SENG?ONGO '...etc

Using the Text function, these names are not validated as they contain
special characters or non-english characters (?,?). But the data is
correct.
Is there any function that can allow such special character's but not
numbers...?

Secondly, If I were to get the data in Russian text, are there any
(lingual) packages available so that i can use the the same module for
validation.
Such that I just have to import the package and the module can be used
for validating russian text or japanese text....

Regards,
Sonal.



From drew at zenoss.com  Mon Sep 18 17:41:54 2006
From: drew at zenoss.com (Drew Bray)
Date: Mon, 18 Sep 2006 17:41:54 -0400
Subject: Zenoss Version 0.22.3 Available
Message-ID: <A2F52595-11DA-4F3B-8533-98C0D90E7DDB@zenoss.com>

09-18-2006

Announcing Zenoss Version 0.22.3

All,

Version 0.22.3 of Zenoss is available for download. Version 0.22.3 is  
a dot release of version 0.22.0, which added several new features,  
including:

* Support for Nagios Plugins (zenagios)
* Addition of a GUI for the selection of Alerting Rules
* Adds Email alerts with configurable body text
* Automated maintenance windows
* Allows the assignment of users to the systems they manage

Zenoss Version 0.22.3 provides several minor bug fixes and  
enhancements, including:

* Use of latin-1 encoding when calling xml-rpc
* Improved handling of Unicode items
* Repaired bad zenagios heartbeat timeout
* Corrected zenagios unpack of config (component and eventKey were  
backward)
* Take off newline when reading configfile values
* Fixed additional date-time zone problems

Download Links:
* Source: http://www.zenoss.org/download/latest/src
* Zenwin: http://www.zenoss.org/download/latest/zenwin
* Documentation: http://www.zenoss.org/download/latest/docs
* Release Notes: http://www.zenoss.org/download/latest/relnotes

Project Blurb:
Zenoss is Python-based, network/systems monitoring application that  
offers a single integrated package for end to end monitoring  
(discovery, configuration, availability, performance, events, alerts)  
of resources across the stack (servers, applications, networks,  
environment, etc...).

Zenoss was recognized as one of the "Top 10 Open Source Projects to  
Watch" by Network World in August of 2006.  (http://www.zenoss.org/ 
about/news_items/articles/nw-10towatch)

Zenoss is currently hiring talented Zope & Python developers.  Join  
the team!
http://www.zenoss.org/jobs.

Enjoy,

Drew
Project Zenoss
drew at zenoss.com


From p.lavarre at ieee.org  Mon Sep 25 22:34:58 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 25 Sep 2006 19:34:58 -0700
Subject: shlex.split != shlex.shlex get_token til eof
References: <1158949149.537922.272920@h48g2000cwc.googlegroups.com>
	<1158963562.701766.283150@d34g2000cwd.googlegroups.com>
Message-ID: <1159238098.139446.232380@b28g2000cwb.googlegroups.com>

> I see shlex.split gives me what I want ...
> shlex.shlex surprisingly gives me something else ...
> I can get closer ... by hacking ...
> .wordchars += ".+-"

Kindly offline I was told,

Try patching .whitespace_split = True instead.  Compare:

shlex.split("//./PhysicalDrive9 //./Cdrom9 //./Tape9 //./A:")

lex = shlex.shlex("//./PhysicalDrive9 //./Cdrom9 //./Tape9 //./A:")
lex.whitespace_split = True
list(lex)

Why and how often this patch makes shlex.shlex and shlex.split agree, I
still don't know - but for these specific examples, it works.



From gagsl-py at yahoo.com.ar  Thu Sep 21 19:16:22 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 20:16:22 -0300
Subject: parsing java files
In-Reply-To: <vXCQg.233$HX5.50@nntpserver.swip.net>
References: <vXCQg.233$HX5.50@nntpserver.swip.net>
Message-ID: <7.0.1.0.0.20060921201411.039f8de0@yahoo.com.ar>

At Thursday 21/9/2006 17:51, st?phane bard wrote:

>i would like to parse java files an detect
>class name's, attributes name's type's and visibility (and or list of
>methods).
>
>is there any module who can parse easily a java file without using
>(jython)?

I would get the needed info using javadoc (in 
Java) and then process the output in Python.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From jstroud at mbi.ucla.edu  Mon Sep 11 00:36:42 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 11 Sep 2006 04:36:42 GMT
Subject: Simple regex with whitespaces
In-Reply-To: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
References: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
Message-ID: <uJ5Ng.124$7I1.31@newssvr27.news.prodigy.net>

mathieu.malaterre at gmail.com wrote:
> Hello,
> 
>   I cannot figure out a way to find a regular expression that would
> match one and only one of these two strings:
> 
> s1 = '                              how are you'
> s2 = '    hello world               how are you'
> 
>   All I could come up with was:
> patt = re.compile('^[ ]*([A-Za-z]+)[  ]+([A-Za-z]+)$')
> 
>   Which of course does not work. I cannot express the fact: sentence
> have 0 or 1 whitespace, separation of group have two or more
> whitespaces.
> 
> Any suggestion ? Thanks a bunch !
> Mathieu
> 


py> import re
py> s1 = '                              how are you'
py> s2 = '    hello world               how are you'
py> s3 = 'group here    now here but not here   but now here'
py> patt_2plus = re.compile(r'(?:(?:\S+(?:\s|$))+(?:\s+|$)){2,}')
py> patt_3plus = re.compile(r'(?:(?:\S+(?:\s|$))+(?:\s+|$)){3,}')

positive tests:

py> patt_2plus.search(s2).group(0)
'hello world               how are you'
py> patt_2plus.search(s3).group(0)
'group here    now here but not here   but now here'
py> patt_3plus.search(s3).group(0)
'group here    now here but not here   but now here'



negative tests:

py> patt_3plus.search(s2).group(0)
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
AttributeError: 'NoneType' object has no attribute 'group'
py> patt_3plus.search(s1).group(0)
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
AttributeError: 'NoneType' object has no attribute 'group'
py> patt_2plus.search(s1).group(0)
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
AttributeError: 'NoneType' object has no attribute 'group' 



James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From mark_galeck_spam_magnet at yahoo.com  Tue Sep  5 00:40:02 2006
From: mark_galeck_spam_magnet at yahoo.com (mark_galeck_spam_magnet at yahoo.com)
Date: 4 Sep 2006 21:40:02 -0700
Subject: why have to "from compiler import *"
Message-ID: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>

Hi,  why does

>>> import compiler
>>> compileFile("foo.py")

complain name 'compileFile' not defined.  But

>>>from compiler import *

works.  Why?  (I did read the tutorial, it seems to say "import module"
should work.  

Thank you,  Mark



From Roberto.Bonvallet at cern.ch  Fri Sep  8 11:36:18 2006
From: Roberto.Bonvallet at cern.ch (Roberto Bonvallet)
Date: 8 Sep 2006 15:36:18 GMT
Subject: Request for tips on my first python script.
References: <mailman.148.1157679775.5279.python-list@python.org>
Message-ID: <eds2li$7b7$1@sunnews.cern.ch>

Lex Hider wrote:
> Any tips on the code quality and use of python would be appreciated. I've
> got a feeling the overall structure is up the creek.
[...]
>    for opt, arg in opts:
>        if opt in ("-l", "--latest"):
>            latest = int(arg)
>        elif opt in ("--notfound"):
>            ignoreNotFound = True #add notfound files to log 

Subtle bug here:  ("--notfound") is not a tuple, is just a string, so what
you are actually testing is whether opt is a substring of "--not-found".
To actually build a 1-element tuple, you have to put a trailing comma:

    elif opt in ("--notfound", ):

but it would be clearer if you just use:

    elif opt == "--notfound":

-- 
Roberto Bonvallet


From claudio.grondi at freenet.de  Wed Sep  6 14:05:00 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Wed, 06 Sep 2006 20:05:00 +0200
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <pan.2006.09.06.15.24.51.384111@gmx.net>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
	<pan.2006.09.06.15.24.51.384111@gmx.net>
Message-ID: <edn2kb$1q2$1@newsreader2.netcologne.de>

Marc 'BlackJack' Rintsch wrote:
> In <edmlbv$a9h$1 at newsreader2.netcologne.de>, Claudio Grondi wrote:
> 
> 
>>The context:
>>   C:\IronPython> ipy.exe
>>   IronPython 1.0.60816 on .NET 2.0.50727.42
>>   Copyright (c) Microsoft Corporation. All rights reserved.
>>vs.
>>   C:\Python24> python.exe
>>   Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] 
>>on win32
>>
>>IronPython raises "UnboundLocalError: local variable 'strData' 
>>referenced before assignment" error in following case:
>><code>
>>     while(someCondition):
>>       try:
>>         strData = strSomeValue()
>>       except:
>>         pass
>>       if( type(strData) == str ) : ### <<< HERE THE ERROR
>>         doSomething()
>></code>
>>CPython 2.4.2 doesn't raise an error with same code.
> 
> 
> Well I get a `NameError`  for `someCondition`.  Please post a minimal
> *working* example that produced the error.
I can't as after constructing one according to what I have thought was 
the cause of it I detected that the error was caused by the exception in 
the line
   strData = strSomeValue()
(see also my other posting)
I have just misinterpreted the origin of the "UnboundLocalError:" as 
raised while parsing and was wondering how it comes, that the parser is 
able to detect such things ...
Sorry for the eventually caused confusion.

Claudio Grondi


From ldo at geek-central.gen.new_zealand  Sun Sep 24 00:49:22 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 16:49:22 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
Message-ID: <ef52mo$eds$3@lust.ihug.co.nz>

In message <slrnehbra1.kpr.jon+usenet at snowy.squish.net>, Jon Ribbens wrote:

> In article <mailman.499.1159035571.10491.python-list at python.org>, Fredrik
> Lundh wrote:
>> Lawrence D'Oliveiro wrote:
>>>
>>> So I think the default for the second argument to cgi.escape should be
>>> changed to True. Or alternatively, the second argument should be removed
>>> altogether, and quotes should always be escaped.
>> 
>> you're confused: cgi.escape(s) is designed to be used for ordinary text,
>> cgi.escape(s, True) is designed for attributes.  if you use the code the
>> way it's intended to be used, it works perfectly fine.
> 
> He's not confused, he's correct; the author of cgi.escape is the
> confused one.

Thanks for backing me up. :)

> > One thing that is flat-out wrong, by the way, is that cgi.escape() 
> does not encode the apostrophe (') character. This is essentially
> identical to the quote character in HTML, so any code which escaping
> one should always be escaping the other.

I must confess I did a double-take on this. But I rechecked the HTML spec
(HTML 4.0, section 3.2.2, "Attributes"), and you're right--single quotes
ARE allowed as an alternative to double quotes. It's just I've never used
them as quotes. :)


From maric at aristote.info  Fri Sep  8 08:00:55 2006
From: maric at aristote.info (Maric Michaud)
Date: Fri, 8 Sep 2006 14:00:55 +0200
Subject: Request for tips on my first python script.
In-Reply-To: <200609081356.47882.maric@aristote.info>
References: <mailman.148.1157679775.5279.python-list@python.org>
	<slrneg2lmv.6ug.sybrenUSE@schuimige.stuvel.eu>
	<200609081356.47882.maric@aristote.info>
Message-ID: <200609081400.56221.maric@aristote.info>

Le vendredi 08 septembre 2006 13:56, Maric Michaud a ?crit?:
> maric at redflag2 jeu sep 07 09:17:51:~/test$ export HOME=/etc
> maric at redflag2 ven sep 08 13:53:17:/home/maric/test$ cd ~
> maric at redflag2 ven sep 08 13:53:22:~$ pwd
> /etc
> maric at redflag2 ven sep 08 13:55:46:~$ python -c 'import os
>
> > print os.path.expanduser("~")
> > '
>
> /etc

Of course it's not the same as :

maric at redflag2 ven sep 08 13:58:25:~$ export HOME=/etc
maric at redflag2 ven sep 08 14:00:11:~$ python -c 'import os
print os.path.expanduser("~maric")
'
/home/maric




-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From luuk at invalid.lan  Mon Sep 11 07:54:18 2006
From: luuk at invalid.lan (Luuk)
Date: Mon, 11 Sep 2006 13:54:18 +0200
Subject: efficient text file search.
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
	<45054921$0$4526$e4fe514c@news.xs4all.nl>
	<1157974937.286653.5500@h48g2000cwc.googlegroups.com>
Message-ID: <45054e6a$0$4512$e4fe514c@news.xs4all.nl>


"noro" <amit.man at gmail.com> schreef in bericht 
news:1157974937.286653.5500 at h48g2000cwc.googlegroups.com...
> :)
>
> via python...
>
> Luuk wrote:
>> "noro" <amit.man at gmail.com> schreef in bericht
>> news:1157973527.817462.207420 at h48g2000cwc.googlegroups.com...
>> > Is there a more efficient method to find a string in a text file then:
>> >
>> > f=file('somefile')
>> > for line in f:
>> >    if 'string' in line:
>> >         print 'FOUND'
>> >
>>
>>
>> yes, more efficient would be:
>> grep (http://www.gnu.org/software/grep/)
>

ok, a more serious answer:

some googling turned op the following.
Second paragraph of chapter 14 of http://www.amk.ca/python/2.1/

a.. The speed of line-oriented file I/O has been improved because people 
often complain about its lack of speed, and because it's often been used as 
a na?ve benchmark. The readline() method of file objects has therefore been 
rewritten to be much faster. The exact amount of the speedup will vary from 
platform to platform depending on how slow the C library's getc() was, but 
is around 66%, and potentially much faster on some particular operating 
systems. Tim Peters did much of the benchmarking and coding for this change, 
motivated by a discussion in comp.lang.python.
A new module and method for file objects was also added, contributed by Jeff 
Epler. The new method, xreadlines(), is similar to the existing xrange() 
built-in. xreadlines() returns an opaque sequence object that only supports 
being iterated over, reading a line on every iteration but not reading the 
entire file into memory as the existing readlines() method does. You'd use 
it like this:


for line in sys.stdin.xreadlines():
    # ... do something for each line ...
    ...
For a fuller discussion of the line I/O changes, see the python-dev summary 
for January 1-15, 2001 at http://www.amk.ca/python/dev/2001-01-1.html.





From deets at nospam.web.de  Fri Sep 22 11:47:02 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 22 Sep 2006 17:47:02 +0200
Subject: XML parser that sorts elements?
References: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>
Message-ID: <4niermFadrl8U1@uni-berlin.de>

jmike at alum.mit.edu wrote:

> Hi everyone,
> 
> I am a total newbie to XML parsing.  I've written a couple of toy
> examples under the instruction of tutorials available on the web.
> 
> The problem I want to solve is this.  I have an XML snippet (in a
> string) that looks like this:
> 
> <booga foo="1" bar="2">
>   <well>hello</well>
>   <blah>goodbye</blah>
> </booga>
> 
> and I want to alphabetize not only the attributes of an element, but I
> also want to alphabetize the elements in the same scope:
> 
> <booga bar="2" foo="1">
>   <blah>goodbye</blah>
>   <well>hello</well>
> </booga>
> 
> I've found a "Canonizer" class, that subclasses saxlib.HandlerBase, and
> played around with it and vaguely understand what it's doing.  But what
> I get out of it is
> 
> <booga bar="2" foo="1">
>   <well>hello</well>
>   <blah>goodbye</blah>
> </booga>
> 
> in other words it sorts the attributes of each element, but doesn't
> touch the order of the elements.
> 
> How can I sort the elements?  I think I want to subclass the parser, to
> present the elements to the content handler in different order, but I
> couldn't immediately find any examples of the parser being subclassed.

You can sort them by obtaining them as tree of nodes, e.g. using element
tree or minidom.

But you should be aware that this will change the structure of your document
and it isn't always desirable to do so - e.g. html pages would look funny
to say the least if sorted in that way.

Diez


From deets at nospam.web.de  Sun Sep 24 17:48:56 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 24 Sep 2006 23:48:56 +0200
Subject: Daemonizing python
In-Reply-To: <pan.2006.09.24.21.01.54.522795@net.hr>
References: <pan.2006.09.24.21.01.54.522795@net.hr>
Message-ID: <4nocq8Fb434vU1@uni-berlin.de>

NinjaZombie schrieb:
> Hi!
> 
> I was wondering if it is possible to turn the current python proccess into
> a unix daemon, but not doing it like this: 
> python myscript.py & 
> but from code programaticaly.

There is a good daemonization recipe on activstate:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012

Diez


From hancock at anansispaceworks.com  Tue Sep 12 16:34:12 2006
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Tue, 12 Sep 2006 15:34:12 -0500
Subject: Clarify Regex in Python.
In-Reply-To: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
Message-ID: <450719C4.1090707@anansispaceworks.com>

cooldudevamsee at gmail.com wrote:

>  After may frustrated attempts I came to know that "match" function
>  in python re package actually start the matchs at the begining of the
>  subject, where "search" will find the given pattern any where in the
>  subject.
>
>  My Problem is, I want to know how can I force match functions to
>  match the pattern any location in the subject. i.e I want to turn off
>  before said behaviour.

re.match = re.search

perhaps?

Stupid thing to do, but it meets the spec.

Cheers,
Terry


-- 
Terry Hancock (hancock at AnansiSpaceworks.com)
Anansi Spaceworks http://www.AnansiSpaceworks.com



From bradfordh at gmail.com  Fri Sep  8 17:58:48 2006
From: bradfordh at gmail.com (Tempo)
Date: 8 Sep 2006 14:58:48 -0700
Subject: urlopen() error
Message-ID: <1157752728.685285.197130@i42g2000cwa.googlegroups.com>

Hello. I am getting an error and it has gotten me stuck. I think the
best thing I can do is post my code and the error message and thank
everybody in advanced for any help that you give this issue. Thank you.

#############
Here's the code:
#############

import urllib2
import re
import xlrd
from BeautifulSoup import BeautifulSoup

book = xlrd.open_workbook("ige_virtualMoney.xls")
sh = book.sheet_by_index(0)
rx = 1
for rx in range(sh.nrows):
    u = sh.cell_value(rx, 0)
    page = urllib2.urlopen(u)
    soup = BeautifulSoup(page)
    p = soup.findAll('span', "sale")
    p = str(p)
    p2 = re.findall('\$\d+\.\d\d', p)
    for price in p2:
		print price

######################
Here are the error messages:
######################

Traceback (most recent call last):
  File "E:\Python24\scraper.py", line 16, in -toplevel-
    page = urllib2.urlopen(u)
  File "E:\Python24\lib\urllib2.py", line 130, in urlopen
    return _opener.open(url, data)
  File "E:\Python24\lib\urllib2.py", line 350, in open
    protocol = req.get_type()
  File "E:\Python24\lib\urllib2.py", line 233, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: List



From altemurbugra at gmail.com  Mon Sep 25 18:14:03 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 25 Sep 2006 15:14:03 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <mailman.555.1159185240.10491.python-list@python.org>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
Message-ID: <1159222443.540807.232040@k70g2000cwa.googlegroups.com>


I dont mean only google, also other sites aswell



From mail at microcorp.co.za  Thu Sep 28 01:48:17 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Thu, 28 Sep 2006 07:48:17 +0200
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com><1159271339.775493.132180@i3g2000cwc.googlegroups.com><mailman.669.1159272062.10491.python-list@python.org>
	<pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>
Message-ID: <014b01c6e2c1$b30d5a00$03000080@hendrik>


 "Steven D'Aprano" <steve at REMOVE.THIS.cybersource.com.au> Wrote:


> On Tue, 26 Sep 2006 22:00:55 +1000, Anthony Baxter wrote:
>
> > This seems to be a very, very silly original post. I know of plenty of
> > people who make a living programming Python. It's been the vast
> > majority of the programming (for money) I've done in the last ten
> > years, and there's countless other people I know here in Melbourne in
> > the same position.
>
> Countless people? Are we talking aleph-zero people (countable infinity) or
> one of the uncountable infinities?
>
>
> --
> Steven.

Oh dont be so pedantic - countless - without count - probably just means that
nobody has bothered to count them...

- Hendrik



>
>



From ldo at geek-central.gen.new_zealand  Tue Sep 26 17:20:23 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 09:20:23 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<Xns98498D79318AFduncanbooth@127.0.0.1>	<efapj7$rfd$2@lust.ihug.co.nz>	<Xns984A6E99A1A73duncanbooth@127.0.0.1>
	<efb0bk$8e5$1@lust.ihug.co.nz>
	<mailman.677.1159276858.10491.python-list@python.org>
Message-ID: <efc5gt$can$3@lust.ihug.co.nz>

In message <mailman.677.1159276858.10491.python-list at python.org>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>
>> In message <Xns984A6E99A1A73duncanbooth at 127.0.0.1>, Duncan Booth wrote:
>> 
>>>In particular it currently turns newlines in backslash followed by n
>>>which (since MySQL ignores the extra backslash escape) is equivalent to
>>>turning newlines into the character n.
>> 
>> But \n is valid MySQL syntax for a newline.
> 
> Phew. It's a good hob that MySQL is the only database in the known
> universe, then, isn't it.

It's the one I was talking about in this thread.


From wahab at chemie.uni-halle.de  Wed Sep 27 15:46:53 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Wed, 27 Sep 2006 21:46:53 +0200
Subject: Battlefield Weapon Popularity Trend
In-Reply-To: <12hlc1hf2amom31@corp.supernews.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
	<12hlc1hf2amom31@corp.supernews.com>
Message-ID: <efeko0$bqg$1@mlucom4.urz.uni-halle.de>

Thus spoke Chris Mattern (on 2006-09-27 19:09):
> In article <efd9g0$sn5$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:
>>
>>When the Samurai of medieval Japan were confronted
>>with new 'battlefield language', e.g. early Shotguns,
> 
> "early Shotguns" :D.  Your mastery of the history of
> firearms overwhelms me.

You want a fight? With a muzzle-loaded gun?
Three shots for everybody -- 5 minutes time?

BTW: (http://en.wikipedia.org/wiki/Musket)
    The date of the origin of muskets remains
    unknown, but they are mentioned as early as
    the late 15th century, and they were primarily
    designed for use by infantry. Muskets became
    obsolete by the middle of the 19th century,
    as rifles superseded them.



Regards

Mirco


From http  Wed Sep 27 23:40:20 2006
From: http (Paul Rubin)
Date: 27 Sep 2006 20:40:20 -0700
Subject: a query on sorting
References: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>
	<efdohj$eq0$1@sea.gmane.org>
	<mailman.848.1159412804.10491.python-list@python.org>
Message-ID: <7xlko464m3.fsf@ruckus.brouhaha.com>

Gabriel Genellina <gagsl-py at yahoo.com.ar> writes:
> >   >>> sorted((x[1], x[0]) for x in enumerate(a))
> >[(1, 7), (2, 4), (2, 8), (3, 2), (4, 1), (5, 3), (6, 5), (7, 6), (9, 0)]
> 
> Why forcing to use enumerate if it doesn't fit? And a generator won't
> help here since you have to access all the items.
> 
> sorted([(a[i],i) for i in range(len(a))])

I think 

   sorted((x,i) for i,x in enumerate(a))

looks nicer than the above. 


From meyer at acm.org  Tue Sep  5 13:19:57 2006
From: meyer at acm.org (Andre Meyer)
Date: Tue, 5 Sep 2006 19:19:57 +0200
Subject: threading support in python
In-Reply-To: <17661.44847.579165.784506@montanaro.dyndns.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
	<17661.37027.891231.814161@montanaro.dyndns.org>
	<edk8r7$qp$1@sea.gmane.org>
	<17661.44847.579165.784506@montanaro.dyndns.org>
Message-ID: <7008329d0609051019t3ab9e840ge0021ff20b24e4f0@mail.gmail.com>

This seems to be an important issue and fit for discussion in the context of
Py3k. What is Guido's opinion?

As a developer of a multi-threaded system I would like to know more about
these issues, so it's no time wasted for me... ;-)

regards
Andre

On 9/5/06, skip at pobox.com <skip at pobox.com> wrote:
>
>
>     Steve> Given the effort that GIL-removal would take, I'm beginning to
>     Steve> wonder if PyPy doesn't offer a better way forward than CPython,
>     Steve> in terms of execution speed improvements returned per
>     Steve> developer-hour.
>
> How about execution speed improvements per hour of discussion about
> removing
> the GIL? ;-)
>
>
-------------- next part --------------
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From deets at nospam.web.de  Mon Sep 25 10:04:32 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 16:04:32 +0200
Subject: Newbie question: PyQt & Form::init()
References: <ef8jbm$l8i$1@newsreader2.netcologne.de>
	<4nq42vFbgfogU1@uni-berlin.de>
	<ef8mj2$p80$1@newsreader2.netcologne.de>
Message-ID: <4nq5vgFbiqhiU1@uni-berlin.de>

Sven Ehret wrote:

> Diez B. Roggisch wrote:
> 
>> Sven Ehret wrote:
>> 
>>> Hello List,
>>> 
>>> I am trying to learn Python and followed the tutorial at
>>> http://www.cs.usfca.edu/~afedosov/qttut/. Being happy that it works, I
>>> am now trying to do my own project, but I am having problems with
>>> initialization of my form.
>>> 
>>> I want to automatically fill a couple of comboboxes upon starting the
>>> program. I read on the net that I simply have to add a function
>>> called ?Form1.Init()? with the content I wish to have executed at start
>>> time. However, it never gets executed, so it seems. When I re-write the
>>> application to have the code executed at the press of a button, it
>>> works. What am I doing wrong?
>> 
>> Show us more code, and we show you the problem. At least we can try then,
>> until someone finally implements
>> 
>> from __future__ import mindreading
>> 
>> Diez
> 
> Oh, sorry. *blush*
> here is my code (two files):
> 
> form1.py:
> # -*- coding: utf-8 -*-
> 
> # Form implementation generated from reading ui file 'form1.ui'
> #
> # Created: Mo Sep 25 15:38:56 2006
> #      by: The PyQt User Interface Compiler (pyuic) 3.14.1
> #
> # WARNING! All changes made in this file will be lost!
> 
> 
> from qt import *
> 
> 
> class Form1(QDialog):
>     def __init__(self,parent = None,name = None,modal = 0,fl = 0):
>         QDialog.__init__(self,parent,name,modal,fl)
> 
>         if not name:
>             self.setName("Form1")
> 
> 
> 
>         self.pushButton1 = QPushButton(self,"pushButton1")
>         self.pushButton1.setGeometry(QRect(410,340,80,30))
> 
>         self.comboBox1 = QComboBox(0,self,"comboBox1")
>         self.comboBox1.setGeometry(QRect(310,10,120,31))
>         self.comboBox1.setSizeLimit(12)
>         self.comboBox1.setMaxCount(12)
> 
>         self.comboBox2 = QComboBox(0,self,"comboBox2")
>         self.comboBox2.setGeometry(QRect(431,10,60,31))
> 
>         self.buttonGroup1 = QButtonGroup(self,"buttonGroup1")
>         self.buttonGroup1.setGeometry(QRect(10,50,480,200))
> 
>         self.pushButton3 = QPushButton(self,"pushButton3")
>         self.pushButton3.setGeometry(QRect(200,320,101,24))
> 
>         self.textLabel1 = QLabel(self,"textLabel1")
>         self.textLabel1.setGeometry(QRect(71,10,160,30))
> 
>         self.languageChange()
> 
>         self.resize(QSize(504,380).expandedTo(self.minimumSizeHint()))
>         self.clearWState(Qt.WState_Polished)
> 
>         self.connect(self.pushButton1,SIGNAL("clicked()"),self.close)
>         self.connect(self.comboBox1,SIGNAL("activated(const
> QString&)"),self.AddMonthsToCombo)

When you just invoke
        

          self.AddMonthsToCombo()

here, things should work.

Diez


From blair.houghton at gmail.com  Wed Sep 27 10:35:01 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 27 Sep 2006 07:35:01 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159367701.124853.131510@b28g2000cwb.googlegroups.com>


walterbyrd wrote:
> If so, I doubt there are many.
>
> I wonder why that is?

Because Java has Sun's crazy-money behind it, and that pisses Microsoft
off, so C# has MS's crazy-money behind it.  And long before that, C was
/the/ language because it was the only one that would allow you to
actually program systems properly.

I happen to know that Google does most of its admin scripting in
Python.  It can't be a small job, running a few hundred thousand
servers worldwide and keeping them all up to date for system and
security.

--Blair



From http  Thu Sep 28 19:32:15 2006
From: http (Paul Rubin)
Date: 28 Sep 2006 16:32:15 -0700
Subject: eval(source, {'builtins': {}}) archived as Faq
References: <1159484841.655115.15190@m7g2000cwm.googlegroups.com>
Message-ID: <7x8xk3y3cw.fsf@ruckus.brouhaha.com>

p.lavarre at ieee.org writes:
> Q: How can I tell Python to calculate what quoted strings and numbers
> mean, without also accidentally accepting OS commands as input?
> 
> A: eval(source, {'builtins': {}})

That is dangerous.  Consider source = "9**9**9".  There's a better
recipe on ASPN:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/364469


From johnjsal at NOSPAMgmail.com  Tue Sep 12 09:45:31 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 12 Sep 2006 13:45:31 GMT
Subject: question about including something like sqlite in python
In-Reply-To: <m2u03d26lt.fsf@unique.fqdn>
References: <9tiNg.2735$No6.53971@news.tufts.edu> <m2u03d26lt.fsf@unique.fqdn>
Message-ID: <%RyNg.2737$No6.53952@news.tufts.edu>

Dan Sommers wrote:

> It's difficult to imagine
> any one developer (or development shop) using the entire library, so at
> least one module must be extraneous.

That's a good point. I guess I am just trying to figure out why I'm a 
little surprised sqlite was included, but at the same time I'm excited 
to use it and the fact that it will now be standard has caused me to 
look into more than otherwise. :)


From iainking at gmail.com  Mon Sep 11 11:27:12 2006
From: iainking at gmail.com (Iain King)
Date: 11 Sep 2006 08:27:12 -0700
Subject: PIL cannot open TIFF image in Windows
In-Reply-To: <C49Ng.102469$zy5.1608421@twister1.libero.it>
References: <mailman.208.1157809477.5279.python-list@python.org>
	<Xns98399FB07666rtwfreenetREMOVEcouk@216.196.109.145>
	<C49Ng.102469$zy5.1608421@twister1.libero.it>
Message-ID: <1157988432.247513.83750@h48g2000cwc.googlegroups.com>


Michele Petrazzo wrote:
> Rob Williscroft wrote:
>
> > I downloaded some test images from:
> >
> >     	<url:http://www.remotesensing.org/libtiff/images.html>
> >
>
> I do the same and modified your code for try FreeImagePy and the results
> are:
>
> ok: 41  error: 20       total: 61
>
> Better than PIL, but a lot of problems with
>
> lower-rgb-planar- > 8 and flower-rgb-contig- > 8
>
> IrfanView seem that can load all the images...
>
> > Rob.
>
> Bye,
> Michele

I've been working with tifs a lot, and I've yet to find a perfect
python solution to them.  The usual images to screw things up for me
are jpeg encoded pages.  Best solution I've found is a try/except fall
through:
try:
  open image with PIL
except:
    try:
      open image with FreeImagePy
    except:
      try:
        open image with wxPython
      except:
        fail

Right now my program to compile multipage tiffs no longer does any of
the image work itself - it processes the index file, and then generates
a batch file.  The batch file is a lot of calls to irfanview /append.
I've yet to find a tiff irfanview can't open.

Iain



From tim at tdw.net  Tue Sep  5 19:29:26 2006
From: tim at tdw.net (Tim Williams)
Date: Wed, 6 Sep 2006 00:29:26 +0100
Subject: Removing from a List in Place
In-Reply-To: <W51595965.49.4985.1@mx-extra>
References: <mailman.41.1157489468.5279.python-list@python.org>
	<W51595965.49.4985.1@mx-extra>
Message-ID: <9afea2ac0609051629r19ba140fka87809462d6e3365@mail.gmail.com>

On 5 Sep 2006 16:05:36 -0700, bayerj <bayerj at in.tum.de> wrote:
> > I'm going to assume that it's supposed to work like this, but could
> > someone tell me the reasoning behind it?  I.E. why is 3 skipped?
>
> Because:
>
> >>> alist[2]
> 3
>
> You are removing the third item, not the second.
>

Actually,  he's removing 2 from the list,   but then the length of the
list shrinks by 1 and iteration stops.

The example would have been better if alist = ['a','b','c'] and 'b' was removed.

 L.remove(value) -- remove first occurrence of value

you were possibly  thinking of alist.pop(2),  which removes the item
alist[2] from alist

HTH :)


-- 

Tim Williams


From vedran_dekovic at yahoo.com  Sat Sep 30 09:17:44 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 30 Sep 2006 06:17:44 -0700
Subject: Python pyphone module download
Message-ID: <1159622264.778399.88770@i42g2000cwa.googlegroups.com>

Hello,
I was install python pyphone,but I can't run it becose I must download
module gtk.Where to I find
module gtk   (gtk.exe)














                            Thanks!!!!!!!!!!!!!!!!!!!!!!!!



From steve at holdenweb.com  Tue Sep 12 12:39:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 17:39:51 +0100
Subject: "filtered view" upon lists?
In-Reply-To: <4506D471.7010905@freakmail.de>
References: <mailman.337.1158062350.5279.python-list@python.org>	<878xkpb5wa.fsf@gmail.com>
	<4506D471.7010905@freakmail.de>
Message-ID: <ee6nre$atu$1@sea.gmane.org>

Wildemar Wildenburger wrote:
> Jorge Godoy wrote:
>  > Wildemar Wildenburger <wildemar at freakmail.de> writes:
>  >
>  >> I don't know how else to call what I'm currently implementing: An 
> object that
>  >> behaves like a list but doesn't store it's own items but rather 
> pulls them
>  >> from a larger list (if they match a certain criterion).
>  >> Changes to the filter are instantly reflected in the underlying list.
>  >> Clear enough?
>  >
>  > It looks like you're implementing a callable to me.  This is a method 
> that
>  > returns results based on some input -- here your original list and 
> filter.
>  > Then you'll use this method wherever you need that filtered list.
>  >
> Ok, so I'm not clear enough ;) .
> I don't just want to extract certain elements from a list, I want an 
> object that looks like a list, however all changes made to that object 
> are automagically reflected in the original list. (I guess that is one 
> of those 'if it's hard to explain, ...' cases.)
> 
> I should have included an example right away ... here goes:
> 
> # I have a list
> l = [1, 2, 3, 4, 5, 6, 7]
> 
> # I then want to create a Filter instance
> # (Filter beeing a *class* implemented by me)
> # where isEven() returns True whenever an item of l
> # should be included in f (in this case, even numbers).
> # (I'm asking if something like this exists in the libs
> # or elsewhere)
> f = Filter(l, isEven)
> 
> # The desired behavior now goes something like this:
> f
>  >>> [2, 4, 6]
> del f[1]
> f
>  >>> [2, 6]
> l
>  >>> [1, 2, 3, 5, 6, 7]
> f.append(77)
> f
>  >>> [2, 6, 77]
> # 77 being intentionally uneven
> l
>  >>> [1, 2, 3, 5, 6, 7, 77]
> # could be [1, 2, 3, 5, 6, 77, 7] as well
> # I don't care here
> 
> # and so forth ...
> 
> I think SQL views are the direct analog.
> 
I don't think they are. If you add a non-conforming row to a SQL view it 
doesn't appear int he view. If you modify a row in an updateable view so 
it no longer confirms with the view's conditions it disappears from the 
view.

This is a classic cause of user perplexity - they update a record 
without being aware that they are using a view and suddenly it "disappears".

Also you don't say whether changes to l are supposed to be reflected in 
f in the same way that changes to f are reflected in l.

It might be better if you were to explain your use case: what is this 
beast supposed to be for?

>  > I don't believe it is generic.  Nobody knows your data specs or filtering
>  > needs.
> Hence the additional function in the Filter constructor ;) . You suggest 
> the same thing below, so that is obviously no problem.
> 
>  > Use of list comprehension might make it easier to code this:
>  >
>  > <snip elaborate example>
> I sort of wanted to avoid these. Though my lists shouldn't terribly 
> long, so performance is not an issue so much. I simply want to avoid 
> having two datasets that I have to sync. Major pain, I believe.
> 
> 
> Coding all that really is quite straight forward, but it is a lot of 
> mule-work. I hoped (no, I still hope) that there might be somethin like 
> that around already.
> 
> A bit clearer now?
> 
Hardly at all. Frankly it doesn't seem as though you really know what 
the specifications are yourself, so you can hardly expect us to divine 
them by use of our psychic powers. Besides which, psychic powers cost 
extra ;-)

So give us that use case so we get a bit more insight into why you even 
see the need for such a thing and how you want it ti behave. Or is all 
this just theoretical?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From MonkeeSage at gmail.com  Sun Sep 24 23:47:24 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 24 Sep 2006 20:47:24 -0700
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
	<mailman.547.1159138250.10491.python-list@python.org>
Message-ID: <1159156044.207187.209530@i42g2000cwa.googlegroups.com>

Tim Chase wrote:
> to give it that perl/ruby-ish feel of terseness and obscurity.

Don't feel bad, you always have things like r'%s\%s' % (u'blah',
u'blah') and so on. But of course, it's only the other guys who are
evil / ugly / stupid. As the human torch says, "Flame On". :)

[Full disclosure: I like ruby _and_ I like python (gasp!), and see no
need to artificially criticize one or the other; I try rather to
utilize the strengths of both.]

Regards,
Jordan



From franz.steinhaeusler at gmx.at  Sun Sep 17 14:49:21 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Sun, 17 Sep 2006 20:49:21 +0200 (CEST)
Subject: Webbrowser written totally in Python
Message-ID: <eek5bg$lm2$1@newsreader2.utanet.at>

Hello NG,

is there any (GUI) webbrowser written completly in Python?

in pyGtk, pyQt, wxPython or TkInter?

-- 
Franz Steinhaeusler



From p.lavarre at ieee.org  Sat Sep 23 16:54:34 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 23 Sep 2006 13:54:34 -0700
Subject: help with debugging a ctypes problem
In-Reply-To: <KLednWs2QvwK2ojYnZ2dnUVZ_tSdnZ2d@comcast.com>
References: <KLednWs2QvwK2ojYnZ2dnUVZ_tSdnZ2d@comcast.com>
Message-ID: <1159044873.990755.108160@i42g2000cwa.googlegroups.com>

> help figuring out how to debug ... ctypes ...
> a commercial dll.  A certain function takes five arguments, foo(a, b, c, d, e).
> Can I view the appropriate stack? ... Any other ideas or advice?  etc?

Did you call the foo of _cdecl ctypes.cdll or the foo of _stdcall =
ctypes.windll?

What is the sizeof each argument type?  Preferably fetched by compiling
some C to printf them?

Would it help to call C in another Dll to return the stack pointer, so
Python could print the stack?



From sjmachin at lexicon.net  Wed Sep 13 12:17:50 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 09:17:50 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <mailman.40.1158163197.10491.python-list@python.org>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
	<ee98cn$qhp$1@foggy.unx.sas.com>
	<mailman.40.1158163197.10491.python-list@python.org>
Message-ID: <1158164270.297334.209790@d34g2000cwd.googlegroups.com>


Fredrik Lundh wrote:
> Kevin D.Smith wrote:
>
> > This almost worked (at least, it appears to).  I got the module to
> > build and install using VS 2005.  It works fine if I run python from
> > the directory where I built the extension.  However, if you go to any
> > other directory, run python, and try to import the module, I get the
> > following error:
> >
> > ImportError: dynamic module does not define init function (initsasSQL)
> >
> > Why would it work from one directory, but not another?
>
> do you perhaps have a different "sassql.dll" file in your Python path?
>
> (Python's standard import mechanism looks for PYD, DLL, PY, PYW, and
> PYC, in that order.)
>

Any support for the radical notion of the error message giving the full
path of the file that it's complaining about? If so, I'll lob in an
enhancement request in the morning ...

Cheers,
John



From edgar at edgar-matzinger.nl  Tue Sep 12 08:03:25 2006
From: edgar at edgar-matzinger.nl (Edgar Matzinger)
Date: Tue, 12 Sep 2006 14:03:25 +0200
Subject: FW: Re: [Spambayes] How to create a valid RPM?
Message-ID: <1158062605l.18089l.0l@nlxth001>

ls,

On 09/12/2006 11:48:10 AM, skip at pobox.com wrote:
> 
>> when I download python-spambayes-1.0rc2-2.src.rpm, install it and
>> run rpmbuild -ba ../SPECS/python-spambayes.spec, I get a lot of
>> error messages. It complains about a lot of installed but
>> unpackaged files.  How can I create a valid RPM?
> 
> Dunno.  Did you try "python setup.py bdist_rpm"?  This is a bit more

This gives the same errors. In fact it calls rpmbuild...

> general than just SpamBayes.  You might get some useful help from
> comp.lang.python (aka python-list at python.org).

   can anyone of you guys help me? It seems that the spec-file does not
contain a valid %files section.

Thanks, cu l8r, Edgar.
-- 
        \|||/
        (o o)                                           Just curious...
----ooO-(_)-Ooo-------------------------------------------------------


From ingo.bear_NOSPAM at freenet.de  Sun Sep 24 05:07:24 2006
From: ingo.bear_NOSPAM at freenet.de (Ingo Linkweiler)
Date: Sun, 24 Sep 2006 11:07:24 +0200
Subject: Verify an e-mail-adress - syntax and dns
Message-ID: <ef5hsc$8ig$1@news01.versatel.de>

Has anyone a function/script to verify an e-mail-address?

It should:
a) check the syntax
b) verify an existing mailserver or DNS/MX records

ingo


From rtw at freenet.co.uk  Fri Sep 22 16:47:21 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Fri, 22 Sep 2006 15:47:21 -0500
Subject: distutils on Windows with VC++ 8
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
	<45136400.5030600@v.loewis.de>
	<Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>
	<4514479B.5070808@v.loewis.de>
Message-ID: <Xns9846DDC7A18E0rtwfreenetREMOVEcouk@216.196.109.145>

=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?= wrote in news:4514479B.5070808
@v.loewis.de in comp.lang.python:

> Rob Williscroft schrieb:
>> Download the 1.1 SDK:
>> 
>> <url:http://www.microsoft.com/downloads/details.aspx?familyid=9B3A2CA6-
>> 3647-4070-9F41-A333C6B9181D&displaylang=en>
>> 
>> yes it does have 90 odd megabytes of stuff you don't want but the C/C++
>> compiler is in there.
> 
> That's yet another option. Somebody reported that the compiler in the
> .NET SDK won't support generating optimized code, though. That's a
> problem for some people.

I belive that was true "Academic" releases of Visual Studio, AIUI it 
was never true of the 7.1 compiler that came with .NET 1.1 SDK's.

> 
>> I think the VS 2003 toolkit is a framework for extending Visual Studio 
>> 2003, IOW a bunch of .NET dlls, some examples and a helpfile (no 
>> compiler).
> 
> I don't think so. It was (as it's no longer officially available) a
> command-line only version of the compiler. In any case, it is
> (or was) different from the .NET SDK.

Having read Noel Byron's reply also, I'm tempted to say there is 
some confusion here between a Visual *Studio* toolkit (VS 2003) 
and a Visual *C++* toolkit (VC 2003).

There is defenitly a Visual Studio Toolkit I downloaded the 2005 
version reciently (to test IornPython integration), and I remember 
coming accross a 2003 version too ('cause Microsoft never like to
make a download easy to find ;-)).

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From johnjsal at NOSPAMgmail.com  Wed Sep 27 09:54:15 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 13:54:15 GMT
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <1159337418.630332.80100@k70g2000cwa.googlegroups.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
	<roy-055E4F.20055226092006@reader2.panix.com>
	<1159337418.630332.80100@k70g2000cwa.googlegroups.com>
Message-ID: <bovSg.32$1n3.436@news.tufts.edu>

sjdevnull at yahoo.com wrote:

> Yes, and making sure that the first several you learn are disparate in
> their common idioms and programming models is incredibly worthwile to
> your development as a programmer IMO.

You're right about that. While I'm definitely no expert in it, I did 
start learning C# last year (even before I started with Python), and 
though I never got too far with it, it was a great experience to learn a 
language like that, and then move on to something as different as 
Python. It really helped me to see how things are done differently given 
the type of language you are using.


From george.sakkis at gmail.com  Tue Sep 26 12:21:08 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 09:21:08 -0700
Subject: identifying new not inherited methods
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
Message-ID: <1159287668.323389.209520@b28g2000cwb.googlegroups.com>

malkaro... at gmail.com wrote:

> Hi,
>
> I am writing a library in which I need to find the names of methods
> which are implemented in a class, rather than inherited from another
> class. To explain more, and to find if there is another way of doing
> it, here is what I want to do: I am defining two classes, say A and B,
> as:
>
> class A(object):
>     def list_cmds(self):
>         'implementation needed'
>         ?
>     def __init__(self):
>     ... (rest of class)
>
> class B(A):
>     def cmd1(self, args):
>         pass
>     def cmd2(self, args):
>         pass
>
> I need an implementation of list_cmds in A above so that I can get a
> result:
>
> >>> b=B()
> >>> b.list_cmds()
> ['cmd1','cmd2']                    #order not important
>
> I will be happy if anybody can point to me any way of doing it, using
> class attributes, metaclasses or otherwise. What I don't want to do is
> modifying class B, which contains just the cmds, if possible.
>
> Many thanks in advance.
>
> k

I'd rather have it as a function, not attached to a specific class:

from inspect import getmembers, ismethod

def listMethods(obj):
    d = obj.__class__.__dict__
    return [name for name,_ in getmembers(obj,ismethod) if name in d]

HTH,
George



From Ferdy.Bonvo at gmail.com  Tue Sep 19 14:01:23 2006
From: Ferdy.Bonvo at gmail.com (Ferdy.Bonvo at gmail.com)
Date: 19 Sep 2006 11:01:23 -0700
Subject: Nano Technology Application For Health,Wellness and Beauty
Message-ID: <1158688883.046410.110720@d34g2000cwd.googlegroups.com>

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---------------------------------------------------------------------------------------------------------------

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From grahn+nntp at snipabacken.dyndns.org  Mon Sep 11 16:39:28 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 11 Sep 2006 20:39:28 GMT
Subject: best way of testing a program exists before using it?
References: <45057B5E.7010306@googlemail.com>
	<mailman.259.1157988058.5279.python-list@python.org>
Message-ID: <slrnegback.31i.grahn+nntp@frailea.sa.invalid>

On Mon, 11 Sep 2006 16:21:04 +0100, Steve Holden <steve at holdenweb.com> wrote:
> Hari Sekhon wrote:
...
>> What is the best way of making sure that the command is installed on the 
>> system before I try to execute it, like the python equivalent of the 
>> unix command "which"?
...
> The easiest way to test whether the command will run is to try and run 
> it. If the program doesn't exist then you'll get an exception, which you 
> can catch. Otherwise you'll be stuck with non-portable mechanisms for 
> each platform anyway ...

You don't get an exception from os.system, and it's worse for os.popen and
friends. In some situations (AFAICS) you're toast if the command doesn't
exist; for example, if you feed sys.stdin to something that doesn't exist
and want to back out and feed it to the second best command.

It would have been nice if there was an os.path.isexecutable which walked the
$PATH. Of course, that wouldn't guarantee that the file actually /was/
executable, but ...

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From brendon at brendontowle.com  Mon Sep 25 10:09:26 2006
From: brendon at brendontowle.com (Brendon Towle)
Date: Mon, 25 Sep 2006 09:09:26 -0500
Subject: Python API to OS X Address Book?
Message-ID: <20060925140926.21C149EEFA@ws6-2.us4.outblaze.com>

Essentially, I'm looking for a Python equivalent to the ObjectiveC stuff that can be found at:

  http://developer.apple.com/documentation/UserExperience/Conceptual/AddressBook/index.html

Google got me that far, but was not particularly helpful past that.

Anyone have any pointers?

B.


From paul at boddie.org.uk  Wed Sep 27 15:51:17 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 27 Sep 2006 12:51:17 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
	<1159278999.374338.76170@m73g2000cwd.googlegroups.com>
	<1159280328.671934.42180@h48g2000cwc.googlegroups.com>
	<1159285305.562672.152460@d34g2000cwd.googlegroups.com>
	<1159380986.289804.185550@b28g2000cwb.googlegroups.com>
Message-ID: <1159386677.677912.165810@i3g2000cwc.googlegroups.com>

Dan Bishop wrote:
>
> Are you hiring? :-)

No, just complaining. ;-)

> It's so frustrating seeing all those job postings that require a
> "mimimum 10 years experience".

I've seen adverts with phrasing that could have been interpreted as
having meant "minimum 10 years .NET experience", and that was a couple
of years ago. Of course, despite the presumed lack of knowledge of the
recruiter who wrote the advert, it's quite possible that something else
was meant, but the quality of prose in such adverts is usually either
so poor that you wonder whether "good written communication skills"
wouldn't also be beneficial in the recruitment business, or the text
merely consists of a checklist of recruitment clich?s, that it's hard
to know exactly what they're getting at sometimes.

Paul



From srikrishnamohan at gmail.com  Tue Sep  5 11:43:57 2006
From: srikrishnamohan at gmail.com (km)
Date: Tue, 5 Sep 2006 21:13:57 +0530
Subject: threading support in python
In-Reply-To: <edk5ab$eoc$1@south.jnrs.ja.net>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<7xejuqhh94.fsf@ruckus.brouhaha.com>
	<mailman.20.1157468962.5279.python-list@python.org>
	<edk5ab$eoc$1@south.jnrs.ja.net>
Message-ID: <f4cc03640609050843g1ef288f4x503d12e280f0e2f6@mail.gmail.com>

True, since smartness is a comparison, my friends who have chosen java
over python for considerations of a true threading support in a
language are smarter, which makes me a dumbo ! :-)

KM


On 9/5/06, Richard Brodie <R.Brodie at rl.ac.uk> wrote:
>
> "km" <srikrishnamohan at gmail.com> wrote in message
> news:mailman.20.1157468962.5279.python-list at python.org...
>
> > I know many of my friends who did not choose python for obvious reasons
> > of the nature of thread execution in the presence of GIL which means
> > that one is  wasting sophisticated hardware resources.
>
> It would probably be easier to find smarter friends than to remove the
> GIL from Python.
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From Eric_Dexter at msn.com  Mon Sep  4 11:03:09 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 4 Sep 2006 08:03:09 -0700
Subject: This seems to crash my program and gives me errors on the
	#include statements
In-Reply-To: <mailman.10334.1157378750.27775.python-list@python.org>
References: <1157375279.790255.321010@b28g2000cwb.googlegroups.com>
	<mailman.10334.1157378750.27775.python-list@python.org>
Message-ID: <1157382189.013651.326640@b28g2000cwb.googlegroups.com>

It is giving errors on the import statements..  I will get an error on
the line where I import this routine import csoundroutines and then the
when I import the the program that tried to import csoundroutines I get
an error and on down the chain..  when I go back to where I started in
csoundroutines all the import errors go away..  I can't tell if thier
is a problem with se.py that starts all the errors or if I am not
getting all the right import statements...  There is a short file on
sourceforge that gives the csoundroutines library I am trying to debug
and expand..

 https://sourceforge.net/project/showfiles.php?group_id=156455&package


Steve Holden wrote:
> Eric_Dexter at msn.com wrote:
> > I was trying to add this to my project but I must be missing some
> > includes or there is a serius error somewhere
> >
> [...]
> >
> > I cut and pasted this..  It seems to be crashing my program.. I am not
> > sure that I have all the right imports..  seems to be fine when I go to
> >
> > an older version of the file...  I uploaded it onto source forge.
> >
> > https://sourceforge.net/project/showfiles.php?group_id=156455&package...
> >
> > http://www.dexrow.com
> >
>
> Nobody, or very few people, are going to bother to download code from
> sourceforge just to help you debug it.
>
> As far as I can see you haven't yet explained *how* your program fails:
> does it give a Python error traceback (in which case we would need to
> see that traceback, which will at least tell us where the error occurs)
> or something else? "A serious error" tells us effectively nothing except
> that your program isn't doing what you want it to do, so even reading
> the source probably won't help.
>
> Have you tried reproducing the "serious error" in a smaller program that
> you could include as a part of a posting on this list?
>
> You are hiding the very information that is needed to help you solve
> your problem.
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden



From exogen at gmail.com  Mon Sep 25 15:40:22 2006
From: exogen at gmail.com (Brian Beck)
Date: Mon, 25 Sep 2006 15:40:22 -0400
Subject: ANN: dmath 0.9 - Math routines for the Decimal type
Message-ID: <ef9bab$fbj$1@eeyore.INS.cwru.edu>

Hi all,

I'm pleased to announce the first release of my new library, dmath. It is
available under the MIT/X11 license.


Download
========
Cheese Shop: http://cheeseshop.python.org/pypi/dmath/0.9
Google Code: http://code.google.com/p/dmath/


What is dmath?
==============
dmath provides the standard math routines for Python's arbitrary-precision
Decimal type. These include acos, asin, atan, atan2, ceil, cos, cosh,
degrees, e, exp, floor, golden_ratio, hypot, log, log10, pi, pow, radians,
sign, sin, sinh, sqrt, tan, and tanh.


About this release:
===================
This is the first release and I'm calling this release 0.9 because it just
needs some testing and maybe some speed improvements, otherwise it's ready
to use. There is currently some work being done in Python sandbox/trunk to
convert the decimal module to C, and maybe they'll include fast versions of
all these routines.

You can follow development details and announcements on my blog here:
http://blog.case.edu/bmb12/


How do I use it?
=================
Use it just like math and cmath, but make sure you give it Decimals:

>>> from dmath import *
>>> from decimal import Decimal as D, getcontext
>>> getcontext().prec = 50
>>> asin(D(1))
Decimal("1.5707963267948966192313216916397514420985846996876")
>>> golden_ratio()
Decimal("1.6180339887498948482045868343656381177203091798058")


-- 
Brian Beck
Adventurer of the First Order


From steve at holdenweb.com  Wed Sep 27 12:58:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 17:58:51 +0100
Subject: Surprise using the 'is' operator
In-Reply-To: <451AA338.4030607@tobiah.org>
References: <mailman.746.1159307893.10491.python-list@python.org>	<451A9824.6040106@tobiah.org>	<mailman.800.1159371630.10491.python-list@python.org>
	<451AA338.4030607@tobiah.org>
Message-ID: <efeaio$ip2$1@sea.gmane.org>

tobiah wrote:
> Simon Brunning wrote:
> 
>>On 9/27/06, tobiah <toby at tobiah.org> wrote:
>>
>>>Suppose I fill an list with 100 million random integers in the range
>>>of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>>>of '12345' pointed to the same integer object?  Why should more be made,
>>>when they all do the same thing, and are not subject to change?
>>
>>If you were to drop that list, then to generate another large list of
>>integers, you'd want to re-use the memory from the first lot, wouldn't
>>you?
>>
>>(BTW, AFAIK, integers are kept seperate from other objects
>>memory-wise, so memory used for integers won'tr be re-used for other
>>object types. but memory used for integers can be re-used for *other*
>>integers. I think.)
>>
> 
> 
> I'm confused now, but yes, I would want to reuse the memory for
> the other integers.  That's why I understand why I get the same
> id back for small integers, but why limit that to (-5, 257)?
> 
> Thanks,
> 
> Toby
> 
It's what's called an "implementation detail". Don't even worry about it 
until you need to shave every microsecond off your program's execution 
time, as reliance on such details reduces portability.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From http  Fri Sep 15 19:51:59 2006
From: http (Paul Rubin)
Date: 15 Sep 2006 16:51:59 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
Message-ID: <7x1wqcsn6o.fsf@ruckus.brouhaha.com>

"Jay" <jaysherby at gmail.com> writes:

> I'm having a problem using lambda to use a command with an argument for
> a button in Tkinter.
> 
>                 buttons = range(5)
> 		for x in xrange(5):

> self.highlight(x))
> 			buttons[x].pack(side=LEFT)
> 
> The buttons are correctly numbered 1 through 5, but no matter which
> button I click on, it sends the number 4 as an argument to the
> highlight function.

x is not bound by the lambda and so the lambda body gets it from the
outside environment at the time the body is executed.  You have to
capture it at the time you create the lambda.  There's an ugly but
idiomatic trick in Python usually used for that:

  buttons[x] = Button(frame, text=str(x+1),   \
        command=lambda x=x: self.highlight(x))

See the "x=x" gives the lambda an arg whose default value is set to 
x at the time the lambda is created, as opposed to when it's called.


From larry.bates at websafe.com  Thu Sep 28 12:32:54 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 28 Sep 2006 11:32:54 -0500
Subject: XSLT speed comparisons
In-Reply-To: <mailman.884.1159454850.10491.python-list@python.org>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>	<451BD332.1080505@websafe.com>
	<mailman.884.1159454850.10491.python-list@python.org>
Message-ID: <451BF936.9080809@websafe.com>

Jan Dries wrote:
> Larry Bates wrote:
>> Damian wrote:
> [...]
>> > What I've got is:
>> > two websites, one in ASP.NET v2 and one in Python 2.5 (using 4suite for
>> > XML/XSLT)
>> > both on the same box (Windows Server 2003)
>> > both using the same XML, XSLT, CSS
>> >
>> > The problem is, the Python version is (at a guess) about three times
>> > slower than the ASP one. I'm very new to the language and it's likely
>> > that I'm doing something wrong here:
> [...]
>> >
>> For max speed you might want to try pyrxp:
>>
>> http://www.reportlab.org/pyrxp.html
>>
> 
> Except that pyrxp, to the best of my knowledge, is an XML parser and
> doesn't support XSLT, which is a requirement for Damian.
> 
> Regards,
> Jan
Oops, I should have read the OPs post closer.

-Larry


From robert.kern at gmail.com  Sun Sep 17 03:34:02 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 17 Sep 2006 02:34:02 -0500
Subject: Finding dynamic libraries
In-Reply-To: <1158477794.780781.83700@i42g2000cwa.googlegroups.com>
References: <mailman.131.1158333391.10491.python-list@python.org>	<1158367145.252363.21230@d34g2000cwd.googlegroups.com>	<mailman.166.1158391127.10491.python-list@python.org>
	<1158477794.780781.83700@i42g2000cwa.googlegroups.com>
Message-ID: <eeitp7$pc1$1@sea.gmane.org>

MonkeeSage wrote:
> Robert Kern wrote:
>> No, his extensions link against other shared libraries which are not Python
>> extensions. Those shared libraries are in nonstandard locations because he is
>> running his tests before installing the libraries and his Python code.
> 
> In that case, couldn't it be done by placing a copy/symlink to the
> shared library in the same directory as the python extension, then
> reload()'ing the extension from the already running python process? I
> think, but am not certain, so don't hold me to it, that dlopen and
> kindred will search the working directory for a library before falling
> back to the cache or LD_LIBRARY_PATH and so on. Worth a shot mabye.

It depends on the OS. Most Linux systems do not.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From ramasubramani.g at gmail.com  Wed Sep  6 23:49:04 2006
From: ramasubramani.g at gmail.com (Rama)
Date: Thu, 7 Sep 2006 09:19:04 +0530
Subject: newbe who is also senior having a senior moment
In-Reply-To: <XyMLg.24585$rP1.20025@news-server.bigpond.net.au>
References: <XyMLg.24585$rP1.20025@news-server.bigpond.net.au>
Message-ID: <3f8d3ac50609062049n2ae0a25pae45bc98e762af8f@mail.gmail.com>

On 07/09/06, stan <stan1948 at bigpond.net.au> wrote:
>
>
> File "C:\Python24\2L file for iTunes", line 4, in -toplevel-
>     import win32com.client
> ImportError: No module named win32com.client
>
> can someone pls point me in the right direction here as I am trying to
> urgently fix the file for someones birthday in game (I know pathetic)
>
>
Try installing the python for win32 extensions -
http://starship.python.net/crew/mhammond/win32/

thanks,
Rama
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From johnjsal at NOSPAMgmail.com  Mon Sep 25 16:11:54 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 25 Sep 2006 20:11:54 GMT
Subject: Leave the putdowns in the Perl community, the Python world does
	not need them
In-Reply-To: <hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
Message-ID: <eKWRg.24$1n3.342@news.tufts.edu>

Steven Bethard wrote:

> [1] He's the author of Python's unicode support and Python 2.5's 
> elementtree module.

Is that all? ;)

He also implemented the partition string method, which for some reason I 
think is the coolest thing since sliced lists. :)


From jjl at pobox.com  Wed Sep 27 15:58:41 2006
From: jjl at pobox.com (John J. Lee)
Date: 27 Sep 2006 20:58:41 +0100
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<1159187290.052703.116370@i42g2000cwa.googlegroups.com>
	<1159211679.627442.111850@i42g2000cwa.googlegroups.com>
Message-ID: <u3bad13pq.fsf@pobox.com>

"Carl Banks" <pavlovevidence at gmail.com> writes:
[...]
> Still don't know whether labeling something as written in Python is
> intended to be a "badge of honor" or "advance warning".

:-)

I'm always surprised when people name *applications* with 'Py' in the
name, unless they're squarely aimed at the geek market (but I guess
quite a few open source apps *do* fall into that category).  It does
seem quite a frequent occurence for that to happen.


John



From laurent.pointal at wanadoo.fr  Mon Sep 18 13:52:08 2006
From: laurent.pointal at wanadoo.fr (Laurent Pointal)
Date: Mon, 18 Sep 2006 19:52:08 +0200
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <450edcc8$0$25913$ba4acef3@news.orange.fr>

nicolasfr at gmail.com wrote:

> Hi,
> 
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
> 
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
> 
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.
> 
> Regards,
> 
> Nicolas.
> -----
> http://www.pythondocs.info

You're realy nor the first one, see
http://mail.python.org/pipermail/python-list/2004-May/219580.html
(and following thread)

Other (never achieved) projects... http://www.pythondocs.org/

Even Skip Montanaro python-glossary site seem to not have been continued...
http://mail.python.org/pipermail/python-list/2004-May/219682.html




From deets at nospam.web.de  Fri Sep 29 10:15:52 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 29 Sep 2006 16:15:52 +0200
Subject: File I/O
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
	<1159527353.447436.107610@i42g2000cwa.googlegroups.com>
	<4o4eipFcp21dU1@uni-berlin.de>
	<1159534659.445774.230620@i3g2000cwc.googlegroups.com>
Message-ID: <4o4o4oFcv8p5U1@uni-berlin.de>

jimburton wrote:

> 
> Diez B. Roggisch wrote:
>> Kirt wrote:
>>
>> >
>> > jimburton wrote:
>> >> Kirt wrote:
>> >> > Hi! I need some help in file I/O
>> >> >
>> >> > I have an xml file..
>> >> [snip]
>> >> See http://diveintopython.org/xml_processing/
>> >
>> > i dont wanna parse the xml file..
>>
>> If you play soccer, do you insist on playing with a baseball bat?
>> 
> I've been known to open a bottle of wine with a pencil. Works fine.

Good to know that you can get drunk under any circumstances.

I have seen a bazillion bad xml/html parsing-hacks using regexes and the
like, which stopped working after somehow the xml came all in one line, or
some other implicit assumption about its layout failed to be met. 






From outstretchedarm at hotmail.com  Thu Sep  7 10:33:00 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 07:33:00 -0700
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <edp8tk$33j$1@newsreader2.netcologne.de>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
Message-ID: <1157639580.217361.273200@i42g2000cwa.googlegroups.com>

thanks.

i have saved and double clicked as suggested.  when I save and double
click a simple "hello program", the b&w python shell briefly comes up,
then disappears. is this how it should work?



From http  Wed Sep 27 16:32:36 2006
From: http (Paul Rubin)
Date: 27 Sep 2006 13:32:36 -0700
Subject: OT: productivity and long computing delays
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
	<mailman.840.1159388059.10491.python-list@python.org>
Message-ID: <7xr6xx2gpn.fsf@ruckus.brouhaha.com>

skip at pobox.com writes:
>     Paul> Anyway, I did the same build on a 2 ghz Athlon 64 and was
>     Paul> surprised that the speedup was only 35% or so.  I'd have to get a
>     Paul> multiprocessor box to obtain really substantial gains.
> 
> Maybe your build process is i/o bound.  If you're using GNU make and have
> the make dependencies set up properly, the -jN flag (for N = 2 or 3) may
> speed things up.

It's almost all CPU-bound on both the Pentium M and the Athlon.  But I
wasn't as much asking for technical approaches to speeding up
calculation, as for general strategy about dealing with this downtime
productively (I figured it was ok to ask this, given the other thread
about RSI).  My workday is getting chopped up in a manner sort of like
memory fragmentation in a program, where you end up with a lot of
disjoint free regions that are individually too small to use.

As for the technical part, the underlying problem has to do with the
build system.  I should be able to edit a source file, type "make" and
recompile just that file and maybe a few related ones.  But the
results of doing that are often incorrect, and to make sure the right
thing happens I have to rebuild.  I'm not in a position right now to
start a side project to figure out what's wrong with the build system
and fix it.


From andreas.huesgen at arcor.de  Wed Sep 13 07:52:32 2006
From: andreas.huesgen at arcor.de (Andreas Huesgen)
Date: Wed, 13 Sep 2006 13:52:32 +0200
Subject: python reference counting and exceptions
In-Reply-To: <2773CAC687FD5F4689F526998C7E4E5FF1E99C@au3010avexu1.global.avaya.com>
References: <2773CAC687FD5F4689F526998C7E4E5FF1E99C@au3010avexu1.global.avaya.com>
Message-ID: <4507F100.60604@arcor.de>



Delaney, Timothy (Tim) wrote:
> RIIA - Resource Initialisation is Acquisition
> 
> Python is adding an RIIA mechanism in 2.5 - look at the "with"
> statement.
> 

Ah, thanks, thats exactly what I was looking for.


Gabriel Genellina wrote:
> Yes: the try/finally construct, which is *not* the same as a try/except. The finally clause is always executed, whether or not an exception is raised.

Yes, of course it must be the try finally construct and not try/except. 
Shame on me.... ;)

Andreas Huesgen


From johnjsal at NOSPAMgmail.com  Thu Sep 28 10:05:16 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 14:05:16 GMT
Subject: sqlite3 error
In-Reply-To: <ojISg.2367$Y24.1479@newsread4.news.pas.earthlink.net>
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<mailman.828.1159382395.10491.python-list@python.org>
	<SBzSg.40$1n3.256@news.tufts.edu>
	<ojISg.2367$Y24.1479@newsread4.news.pas.earthlink.net>
Message-ID: <wEQSg.42$1n3.351@news.tufts.edu>

Dennis Lee Bieber wrote:
> On Wed, 27 Sep 2006 18:41:54 GMT, John Salerno
> <johnjsal at NOSPAMgmail.com> declaimed the following in comp.lang.python:
> 
>> You're right! I think that must have been leftover from when it wasn't 
>> the last line in the query. Thanks!
> 
> 	You also, based upon the cut&paste, have a stray
> 
> "") 
> 
> (or something similar in the last line)

I don't see this. The code works now, though. Maybe it was something 
carried over by pasting.


From steve at holdenweb.com  Wed Sep  6 03:52:34 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:52:34 +0100
Subject: threading support in python
In-Reply-To: <1157526371.291426.191730@m79g2000cwm.googlegroups.com>
References: <mailman.53.1157506527.5279.python-list@python.org>	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
Message-ID: <edlumv$t24$1@sea.gmane.org>

sjdevnull at yahoo.com wrote:
> Paul Rubin wrote:
> 
>>Jean-Paul Calderone <exarkun at divmod.com> writes:
>>
>>>>which more explicitly shows the semantics actually desired.  Not that
>>>>"huge" a benefit as far as I can tell.  Lisp programmers have gotten
>>>>along fine without it for 40+ years...
>>>
>>>Uh yea.  No lisp programmer has ever written a with-* function... ever.
>>
>>The context was Lisp programmers have gotten along fine without
>>counting on the refcounting GC semantics that sjdevnull advocates
>>Python stay with.  GC is supposed to make it look like every object
>>stays around forever, and any finalizer that causes an explicit
>>internal state change in an extant object (like closing a file or
>>socket) is not in the GC spirit to begin with.
> 
> 
> I disagree, strongly.  If you want "every object stays around forever"
> semantics, you can just not free anything.  GC is actually supposed to
> free things that are unreachable at least when memory becomes tight,
> and nearly every useful garbage collected language allows destructors
> that could have effects visible to the rest of the program.  Reference
> counting allows more deterministic semantics that can eliminate
> repeating scope information multiple times.
> 
Clearly you guys are determined to disagree. It seemed obvious to me 
that Paul's reference to making it "look like every object stays around 
forever" doesn't exclude their being garbage-collected once the program 
no longer contains any reference to them.

You simplify the problems involved with GC-triggered destructors to the 
point of triviality. There are exceedingly subtle and difficult issues 
here: read some of the posts to the python-dev list about such issues 
and then see if you still feel the same way.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From root at onyx.ataraxy.com  Wed Sep  6 01:47:15 2006
From: root at onyx.ataraxy.com (root)
Date: Wed, 06 Sep 2006 01:47:15 -0400
Subject: Chegou um cartão para Você
 FROM: O Carteiro <noreply@ocarteiro.com.br>
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 X-Virus-Checked: Checked
 X-Priority: 1
 Importance: High
 Message-ID: <1155861778.2.4410301365277695156.1.15768020@mail.ocarteirro.com>
 
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Message-ID: <E1GKqFm-0006Wp-JL@onyx.ataraxy.com>



From metaperl at gmail.com  Thu Sep 14 17:14:02 2006
From: metaperl at gmail.com (metaperl)
Date: 14 Sep 2006 14:14:02 -0700
Subject: best small database?
In-Reply-To: <xNJNg.48452$Qb2.44371@trnddc08>
References: <0rdNg.6440$c22.5757@trnddc07><xNJNg.48452$Qb2.44371@trnddc08>
Message-ID: <1158268442.259665.169570@i42g2000cwa.googlegroups.com>


David Isaac wrote:
> Thanks to all for the suggestions and much else
> to think about.
>
> Summarizing:
>
> Those who were willing to consider a database suggested:
> anydbm
> Gadfly
> SQLite (included with Python 2.5)
> Schevo

You missed buzhug:
http://buzhug.sourceforge.net/

A very thorough pure Python database.



From limodou at gmail.com  Thu Sep 14 08:45:11 2006
From: limodou at gmail.com (limodou)
Date: Thu, 14 Sep 2006 20:45:11 +0800
Subject: Looking for the Perfect Editor
In-Reply-To: <48iig2hl4h93vmp70t62gnoslfqkitso64@4ax.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<48iig2hl4h93vmp70t62gnoslfqkitso64@4ax.com>
Message-ID: <505f13c0609140545j64eac05fk54162915b373ad7b@mail.gmail.com>

On 9/14/06, Franz Steinhaeusler <franz.steinhaeusler at gmx.at> wrote:
> On 7 Sep 2006 13:18:22 -0700, "Omar" <outstretchedarm at hotmail.com>
> wrote:
>
> >I'd love the perfect editor that would be:
> >
> >a) free
>
> DrPython and spe; both written in Python and wxPython using SciTe's
> control scintilla) and SciTE.
>
> DrPython on:
> http://sourceforge.net/projects/drpython/ (Projectpage)
> http://drpython.sourceforge.net/ (Homepage)
>
> >
> >b) enable me to drag and drop code snippets from a sort of browser into
> >the code
>
> DrPython Codemarks plugin.
>
> >
> >c) can run programs right from within
>
> DrPython => Program => Run (default F5)
>
> >
> >d) can edit
> >      - PYTHON
> DrPython, spe, SciTE.
>
> >      - Javascript
> no definite support.
>
> >      - HTML
> DrPython (the others, I don't know)
>
> >      - actionscript (since I'm also learning flash)
>
> Sepy on Sourceforge (also written in Python with wxPython)
> http://sourceforge.net/projects/sepy/
>
> >
> >e) easy to learn
> >
>
> SciTE especially.
>
> >suggestions?
>
These things UliPad also can do. And it also support html, javascript,
css, java, etc syntax highlight. UliPad also support Input Assistant,
even include custom calltips and auto-complete, and many features, you
can find in http://wiki.woodpecker.org.cn/moin/UliPad

It also has a directory browser, wizard, plugins-system, code snippets
manage. Just using it, you'll find out what it's.


-- 
I like python!
My Blog: http://www.donews.net/limodou
UliPad Site: http://wiki.woodpecker.org.cn/moin/UliPad
UliPad Maillist: http://groups.google.com/group/ulipad


From felipe.lessa at gmail.com  Thu Sep  7 10:20:12 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Thu, 7 Sep 2006 11:20:12 -0300
Subject: [ANN] IronPython 1.0 released today!
In-Reply-To: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
Message-ID: <c2701f5c0609070720y21a9be7bw4179ece6f8d1440f@mail.gmail.com>

2006/9/5, Jim Hugunin <Jim.Hugunin at microsoft.com>:
> I'm extremely happy to announce that we have released IronPython 1.0 today!
>  http://www.codeplex.com/IronPython

Does IronPython runs Twisted?

-- 
Felipe.


From p.lavarre at ieee.org  Tue Sep 26 15:34:42 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 26 Sep 2006 12:34:42 -0700
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <mailman.654.1159264176.10491.python-list@python.org>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.654.1159264176.10491.python-list@python.org>
Message-ID: <1159299282.448590.325200@h48g2000cwc.googlegroups.com>

> > > > Q: The C idea of (pv != NULL) ...
> >
> > CTypes tutorial ... == False ... == None ... is None ...
>
> Generally ... 'if pv: ....'  ... should work.
> Except for c_void_p, c_char_p and c_wchar_p instances.

Please can we give me an example of these exceptions?

Indeed those types are the _p types I use most often. Now here
'bool(pv)' and 'if pv' tell me that null is False and non-null is True,
for every kind of null or non-null that I know how to construct.

Is that mapping somehow not reliable across all instances? Or not
cross-platform?

You did mean to say that the Python fragments 'bool(pv)' and 'if pv'
somehow are not accurate translations of the C fragments 'pv != NULL'
and 'if pv'?  Something other kind of Python is?



From duncan.booth at invalid.invalid  Thu Sep 21 16:35:25 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 21 Sep 2006 20:35:25 GMT
Subject: Strange behaviour of 'is'
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
Message-ID: <Xns9845DB9D07E91duncanbooth@127.0.0.1>

"Fijoy George" <tofijoy at yahoo.co.in> wrote:

> My understanding was that every literal is a constructure of an
> object. Thus, the '2.' in 'x = 2.' and the '2.' in 'x is 2.' are
> different objects. Therefore, the comparison yields false.

What gave you that idea? The compiler may or may not fold together 
identical immutable objects when it compiles your code. In your first 
example the comparison is False because the two lines are compiled 
separately. If compiled together it might have returned True:

>>> x = 2.; x is 2.
True

However this is purely an implementation detail. The language doesn't 
actually require either behaviour.





From rhymes at myself.com  Tue Sep  5 13:36:53 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Tue, 5 Sep 2006 19:36:53 +0200
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.13.1157448384.5279.python-list@python.org>
	<1157468259.924431.270850@h48g2000cwc.googlegroups.com>
	<1hl7hvw.qrhoy6180zbjcN%rhymes@myself.com>
Message-ID: <1hl7i8q.bs2uvl1urk88wN%rhymes@myself.com>

Lawrence Oluyede <rhymes at myself.com> wrote:

> Take a look here:
> http://lists.ironpython.com/pipermail/users-ironpython.com/2006-March/00
> 2049.html
> and this thread:
> http://www.mail-archive.com/users at lists.ironpython.com/msg01826.html

Also this: http://www.codeproject.com/useritems/ipaspnet.asp

Google is you friend! :-)

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From steve at holdenweb.com  Sat Sep 30 17:52:48 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 22:52:48 +0100
Subject: Escapeism
In-Reply-To: <1159642864.799937.247960@h48g2000cwc.googlegroups.com>
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>	<slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>	<1159635727.840033.169540@m73g2000cwd.googlegroups.com>	<mailman.1009.1159638919.10491.python-list@python.org>
	<1159642864.799937.247960@h48g2000cwc.googlegroups.com>
Message-ID: <efmott$bps$2@sea.gmane.org>

Kay Schluehr wrote:
> Steve Holden wrote:
> 
>>Kay Schluehr wrote:
>>
>>>Sybren Stuvel wrote:
>>>
>>>
>>>>Kay Schluehr enlightened us with:
>>>>
>>>>
>>>>>Usually I struggle a short while with \ and either succeed or give up.
>>>>>Today I'm in a different mood and don't give up. So here is my
>>>>>question:
>>>>>
>>>>>You have an unknown character string c such as '\n' , '\a' , '\7' etc.
>>>>>
>>>>>How do you echo them using print?
>>>>>
>>>>>print_str( c ) prints representation '\a' to stdout for c = '\a'
>>>>>print_str( c ) prints representation '\n' for c = '\n'
>>>>>...
>>>>>
>>>>>It is required that not a beep or a linebreak shall be printed.
>>>>
>>>>try "print repr(c)".
>>>
>>>
>>>This yields the hexadecimal representation of the ASCII character and
>>>does not simply echo the keystrokes '\' and 'a' for '\a' ignoring the
>>>escape semantics. One way to achieve this naturally is by prefixing
>>>'\a' with r where r'\a' indicates a "raw" string. But unfortunately
>>>"rawrification" applies only to string literals and not to string
>>>objects ( such as c ). I consider creating a table consisting of pairs
>>>{'\0': r'\0','\1': r'\1',...}  i.e. a handcrafted mapping but maybe
>>>I've overlooked some simple function or trick that does the same for
>>>me.
>>>
>>
>>No, you've overlooked the fact that if you print the string containing
>>the two characters "backslash" and "lower case a" then it will print
>>exactly those two characters. See:
>>
>>In [30]: c = "\\a"
>>
>>In [31]: len(c)
>>Out[31]: 2
>>
>>In [32]: print c
>>\a
> 
> 
> I'm interested in the transition between two literals from which one is
> a string literal containing \ as a "meta character" s.t. '\a' has
> actually length 1 and is beep when printed to stdout and its "raw" form
> without a meta character interpretation of \ that leads to the result
> you described. Using the string prefix r to '\a' indicates the raw form
> to the compiler. But there seems to be no runtime counterpart. I've
> suggested a naive implementation such as
> 
> def rawform(c):
>      return {'\a': r'\a'}[c]
> 
> Here the function returns for the single input character '\a' the two
> character raw form by means of escaping \ ( and raises a KeyError
> exception otherwise ).
> 
> 
>>>>c = '\a'
>>>>print rawform(c)
> 
> \a
> 
> This has the same effect as writing:
> 
>>>>c = r'\a'
>>>>print c
> 
> \a
> 
> But there is some ambiguity due to the the fact that applying '\7' to
> rawform() yields r'\a' and not r'\7'. So one needs more specification
> for disambiguation using e.g. an extra parameter.
> 
In [33]: "\7" == "\a"
Out[33]: True

Sorry. It can't possibly know which of two alternative representation 
were used to represent a particular character in a literal.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Tue Sep  5 19:29:11 2006
From: sjmachin at lexicon.net (John Machin)
Date: 5 Sep 2006 16:29:11 -0700
Subject: Removing from a List in Place
In-Reply-To: <1157497536.751534.211710@e3g2000cwe.googlegroups.com>
References: <mailman.41.1157489468.5279.python-list@python.org>
	<1157497536.751534.211710@e3g2000cwe.googlegroups.com>
Message-ID: <1157498951.249712.208640@d34g2000cwd.googlegroups.com>

bayerj wrote:
> > I'm going to assume that it's supposed to work like this, but could
> > someone tell me the reasoning behind it?  I.E. why is 3 skipped?
>
> Because:
>
> >>> alist[2]
> 3
>
> You are removing the third item, not the second.

This is incorrect.
You may need to remind yourself that the arg of remove is a value to be
searched for and then removed, not an index. del alist[2] would remove
the third item.

You may have been confused by the OP's obfuscatory example alist = [1,
2, 3].
Consider this equivalent:
| >>> alist = ['foo', 'bar', 'zot']
| >>> for item in alist:
| ...     print item
| ...     if item == 'bar':
| ...         alist.remove(item)
| ...
| foo
| bar
| >>> alist
| ['foo', 'zot']
| >>>

HTH,
John



From fredrik at pythonware.com  Sun Sep 17 11:16:03 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 17 Sep 2006 17:16:03 +0200
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com><mailman.200.1158496161.10491.python-list@python.org>
	<1158505549.695813.206860@h48g2000cwc.googlegroups.com>
Message-ID: <eejork$hgg$1@sea.gmane.org>

"Jay" <jaysherby at gmail.com> wrote:

> Speaking of the bytecode, how does one create it?

http://effbot.org/zone/python-compile.htm#compiling-python-modules

</F> 





From ldo at geek-central.gen.new_zealand  Sat Sep 23 08:14:27 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 00:14:27 +1200
Subject: "re" vs "sre"?
References: <ef371q$4ui$1@lust.ihug.co.nz> <ef387g$t6m$01$1@news.t-online.com>
Message-ID: <ef38da$6tb$1@lust.ihug.co.nz>

In message <ef387g$t6m$01$1 at news.t-online.com>, Peter Otten wrote:

> Lawrence D'Oliveiro wrote:
> 
>> I learned about Python regular expressions from the Web documentation
>> <http://docs.python.org/lib/lib.html>. This describes a module named
>> "re". Then I saw some code written by a colleague, and he was using a
>> module named "sre". I checked my Python 2.4.3 installation, and sure
>> enough, I have a module named "sre" as well as "re". Curious, I fired up
>> an interactive Python session, and looked to see what the docstrings were
>> for these modules. And for the "re" module, the help says:
>> 
>>     re - Minimal "re" compatibility wrapper.  See "sre" for
>>     documentation.
>> 
>> and "sre" seems to have the more complete set of docstrings.
>> 
>> So which one should we be using?
> 
> Here's what Python 2.5 has to say on the matter:
>>>> import sre
> __main__:1: DeprecationWarning: The sre module is deprecated, please
> import re.

That's good. Does "help(re)" still say it's a "compatibility wrapper"?


From corridor.infinite at gmail.com  Wed Sep  6 13:17:43 2006
From: corridor.infinite at gmail.com (Infinite Corridor)
Date: 6 Sep 2006 10:17:43 -0700
Subject: 22, invalid agument error
Message-ID: <1157563063.063705.317970@m73g2000cwd.googlegroups.com>

I am trying to get an echoserver running on my N80 Nokia cell phone,
that uses "python for s60".
What worked:
I ran echoclient on the phone and echoserver on my Powerbook and it
worked.

What doesnt work:
When I try running the same scripts, so that I run echoclient on the
laptop and echoserver on the cellphone, the echoserver doesnt work(Yes,
I have changed the IP address correctly).

The error I get is:

File "e:/python/echoserver.py". line
15 in ?
  sockobj.bind(('',40007))
# bind it to server port number
File "<string>", line 1, in bind
error: (22, 'Invalid argument')

Why is this program showing an error on the cellphone when it is
running fine on the Mac?

Thanks, any help will be appreciated.

Dave



From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 05:53:54 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 10:53:54 +0100
Subject: Import a textfile to MS SQL with python
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B412@vogbs009.gb.vo.local>

[joel.sjoo at gmail.com]

| I'm a dba for SQL server and I Will import a textfile to SQL. For
| example I use a file with 3 columns. ID, Name and Surname and the
| columns are tab separated. I don't know much about programming.
| Anyway, I use this code below. It works, but it will not split the
| columns. 

Split the problem into two parts:

1) Determine the correct row/column values from your tab-separated file
2) Write the values into your database table

The first part is probably best handled by the built-in csv
module. While you can roll your own there are quite a few
gotchas you have to dodge - embedded delimiters and so on. 

Something like this:

<code>
import csv

# by default reader uses "," as delimiter; specify tab instead

reader = csv.reader (open ("test.tsv"), delimiter="\t")
data = []
for line in reader:
  data.append (line)

# or data = list (reader)

print data
#
# Something like:
# [[1, "Tim", "Golden"], [2, "Fred", "Smith"], ...]
#

</code>

OK, now you've got a list of lists, each entry being one
row in your original file, each item one column. To get
it into your database, you'll need something like the
following -- ignoring the possibility of executemany.

<code>
# uses data from above
import <database module> # pymssql, oracle, sqlite, etc.

db = <database module>.connect (... whatever you need ...)
q = db.cursor ()
for row in data:
  q.execute (
    "INSERT INTO python (id, namn, efternamn) VALUES (?, ?, ?)",
    row
  )

db.commit () # if needed etc.
db.close ()
</code>

This works because the DB-API says that an .execute takes
as its first parameter the SQL command plus any parameters 
as "?" (or something else depending on the paramstyle, 
but this is probably the most common). Then as the second
parameter you pass a list/tuple containing as many items
as the number of "?" in the command. You don't need to worry
about quoting for strings etc; the db interface module should
take care of that.

Behind the scenes, this code will be doing something like this
for you:

INSERT INTO python (id, namn, efternamn) VALUES (1, 'Tim', 'Golden')
INSERT INTO python (id, namn, efternamn) VALUES (2, 'Fred', 'Smith')

and so on, for all the rows in your original data.

Some db interface modules implement .executemany, which means that
you specify the statement once and pass the whole list at one go.
Whether it's more efficient than looping yourself depends on what's
happening behind the scenes. It's certainly a touch tidier.

Hope all that is intelligble and helpful
TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
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From skip at pobox.com  Tue Sep  5 16:20:03 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 15:20:03 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157484212.885076.304340@h48g2000cwc.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
Message-ID: <17661.56307.689596.660304@montanaro.dyndns.org>


    >> What I'll do is re-format my rant, suggest how *I* would do the
    >> documentation, fix the errors I found in the examples and send it off
    >> to the Python bug tracking as suggested in the manuals.

    >> How's that as a plan?

That's fine.  Reformat your rant as a documentation bug report on
SourceForge:

    http://sourceforge.net/projects/python

If you mention specific sqlite documentation urls you think should be
referenced in the pysqlite docs it would make it easier to accept.

Skip



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 10:58:30 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 16:58:30 +0200
Subject: Python 2.5 WinXP AMD64
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
	<4nfrhbFa4kbiU1@individual.net>
	<9xSQg.3515$vJ2.2333@newssvr12.news.prodigy.com>
Message-ID: <4nic0mFag01tU3@individual.net>

Bryan Olson wrote:

> The O.P. has a 64-bit Athlon processor, but is running a 32-bit
> OS. The processor emulates its 32-bit predecessor in "legacy
> mode", so 32-bit software runs.

Ah, of course. Thanks for all replies! :)
 
Regards,


Bj?rn

-- 
BOFH excuse #13:

we're waiting for [the phone company] to fix that line



From fredrik at pythonware.com  Tue Sep 26 12:48:15 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 18:48:15 +0200
Subject: A critique of cgi.escape
In-Reply-To: <451948FC.9040009@sweetapp.com>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<Xns984996E6BABCEduncanbooth@127.0.0.1>	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>	<mailman.672.1159275735.10491.python-list@python.org>	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>	<mailman.680.1159277904.10491.python-list@python.org>	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>	<mailman.687.1159280315.10491.python-list@python.org>	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>	<mailman.690.1159282116.10491.python-list@python.org>	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>	<mailman.698.1159283878.10491.python-list@python.org>	<7xu02u1wl6.fsf@ruckus.brouhaha.com>
	<451948FC.9040009@sweetapp.com>
Message-ID: <efblkg$u9k$1@sea.gmane.org>

Brian Quinlan wrote:

> I'd have to dig through the revision history to be sure, but I imagine 
> that cgi.escape was originally only used in the cgi module (and there 
> only in it's various print_* functions). Then it started being used by 
> other core Python modules e.g. cgitb, DocXMLRPCServer.

nah, it's an official API for simple HTML/XML escaping, and it's 
perfectly usable for what it's supposed to be used for.

however, if you're doing serious web hacking, you *should* of course 
work at the XHTML information set level whenever you can, where you 
focus on the data you want to publish (using Unicode strings for any- 
thing that's even remotely resembles human text), and the framework 
makes sure that it gets to the other side in once piece, using HTML4 or 
XHTML as necessary, and escaping and encoding things properly and 
efficiently on the way.  it's 2006.  transferring data from Python 
applications to web browsers is no rocket science.

</F>



From fdu.xiaojf at gmail.com  Thu Sep 21 03:34:21 2006
From: fdu.xiaojf at gmail.com (fdu.xiaojf at gmail.com)
Date: Thu, 21 Sep 2006 15:34:21 +0800
Subject: Is it possible to save a running program and reload next time ?
Message-ID: <4512407D.5020307@gmail.com>

Hi,

I have a program which will continue to run for several days. When it is 
running, I can't do anything except waiting because it takes over most 
of the CUP time.

Is it possible that the program can save all running data to a file when 
I want it to stop, and can reload the data and continue to run from 
where it stops when the computer is free ?

Regards,

xiaojf



From meyer at acm.org  Sat Sep  9 14:54:20 2006
From: meyer at acm.org (Andre Meyer)
Date: Sat, 9 Sep 2006 20:54:20 +0200
Subject: Building Python Based Web Application
In-Reply-To: <4503071e$0$27248$636a55ce@news.free.fr>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
	<4503071e$0$27248$636a55ce@news.free.fr>
Message-ID: <7008329d0609091154o12a1b4e4md33012dbb7d97f38@mail.gmail.com>

Karrigell can really be recommended. Simple, but powerful. No need for SQL
(though it can), just use the pure Python buzhug, Karrigell services and
(Cheetah) templates. Works great.

regards
Andre
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From tenax.raccoon at gmail.com  Sat Sep  2 23:02:32 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 2 Sep 2006 20:02:32 -0700
Subject: How to run Python file?
In-Reply-To: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
Message-ID: <1157252552.558447.260150@b28g2000cwb.googlegroups.com>

mistral wrote:
> I have installed ActivePython
> http://www.activestate.com/Products/ActivePython/
> How I can run Python file, test.py?

You can open up the folder containing the "test.py" file, then
double-click on the file to run it.  A command-line window should pop
up, and your program will run in it.  Once the Python program is done
running, the command window will probably close immediately.

    --Jason



From sjmachin at lexicon.net  Mon Sep 25 10:35:19 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 07:35:19 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
In-Reply-To: <hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
Message-ID: <1159194919.604700.233570@b28g2000cwb.googlegroups.com>


Steven Bethard wrote:
> metaperl wrote:
> > I was shocked to see the personal insults hurled in this thread:
> > http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b
>
> I see that this is a Fredrik Lundh thread.  I've felt the same way
> before, but Fredrik has been around a long time[1] and if you listen
[snip]
>
> [1] He's the author of Python's unicode support and Python 2.5's
> elementtree module.

and a very serious upgrade of the re kit plus PIL plus a book .... and
BTW: insult? OP, look at the TV news; if insult's the worst that
happens to you, burn some joss and be very grateful :-)



From fredrik at pythonware.com  Fri Sep 29 13:00:15 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 19:00:15 +0200
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <7xac4izkkv.fsf@ruckus.brouhaha.com>
References: <451D25A3.7010803@googlemail.com>
	<R53637327.467.1352.3@mx-extra>	<mailman.949.1159543590.10491.python-list@python.org>	<W53645725.803.1323.1@mx-extra>	<mailman.957.1159547987.10491.python-list@python.org>
	<7xac4izkkv.fsf@ruckus.brouhaha.com>
Message-ID: <efjjet$a5o$1@sea.gmane.org>

Paul Rubin wrote:

> Don't use the presence or absence of a file as a lock.  Have the file
> there all the time, and have the app open it and use fcntl to get an
> exclusive kernel lock on the file descriptor.

doesn't work on all file systems, though...

</F>



From simon at brunningonline.net  Tue Sep 26 06:27:44 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 26 Sep 2006 11:27:44 +0100
Subject: concat next line with previous
In-Reply-To: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>
References: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>
Message-ID: <8c7f10c60609260327q28c95e04xd310c7b4469ebdc9@mail.gmail.com>

On 26 Sep 2006 03:16:25 -0700, s99999999s2003 at yahoo.com
<s99999999s2003 at yahoo.com> wrote:
> what is the python way to concat 2 lines eg
>
> line  1 with some text
> line 2 with some text
>
> i want to bring line 2 up , such that i get one whole string.
>
> line  1 with some text line 2 with some text

line1 = "line  1 with some text"
line2 = "line 2 with some text"

# Simplest way:

line3 = line1 + line2

# More general - joining a sequence of strings, with delimiter

lines = [line1, line2]
line3 = ", ".join(lines)

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From fredrik at pythonware.com  Thu Sep 28 01:29:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 07:29:31 +0200
Subject: Difference between two dates in seconds
In-Reply-To: <pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>	<mailman.822.1159381205.10491.python-list@python.org>
	<pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
Message-ID: <effmjq$l36$1@sea.gmane.org>

Steven D'Aprano wrote:

> Arguably a better solution would be to do this:
> 
> seconds = td.days * 24*60*60 + td.seconds

if you're targeting an audience that cannot figure out what the 
expression does based on the names of the result and the names of the 
attributes, chances are that 24*60*60 won't make a lot more sense either.

in such cases, you're better off using a named constant.

(that also allows you to change the value, would the need arise.)

why stop at 24*60*60, btw?  if you're really serious about working from 
basic units, you should probably make it

     24*60*60*9192631770*BASIC_SECOND_UNIT

:::

and yes, if you want the CPython compilator to do the multiplication for 
you, put parentheses around the subexpression:

 >>> def get_seconds(td):
...     return td.days * (24*60*60) + td.seconds
...
 >>> import dis
 >>> dis.dis(get_seconds)
   2           0 LOAD_FAST                0 (td)
               3 LOAD_ATTR                0 (days)
               6 LOAD_CONST               4 (86400)
               9 BINARY_MULTIPLY
              10 LOAD_FAST                0 (td)
              13 LOAD_ATTR                1 (seconds)
              16 BINARY_ADD
              17 RETURN_VALUE

</F>



From uche.ogbuji at gmail.com  Fri Sep 29 09:10:20 2006
From: uche.ogbuji at gmail.com (uche.ogbuji at gmail.com)
Date: 29 Sep 2006 06:10:20 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
Message-ID: <1159535420.602412.71400@m7g2000cwm.googlegroups.com>

Damian wrote:
> Hi, I'm from an ASP.NET background an am considering making the switch
> to Python. I decided to develop my next project in tandem to test the
> waters and everything is working well, loving the language, etc.
>
> What I've got is:
> two websites, one in ASP.NET v2 and one in Python 2.5 (using 4suite for
> XML/XSLT)
> both on the same box (Windows Server 2003)
> both using the same XML, XSLT, CSS
>
> The problem is, the Python version is (at a guess) about three times
> slower than the ASP one. I'm very new to the language and it's likely

The ASP one being MSXML, right?  In that case that result doesn't
surprise me.

> that I'm doing something wrong here:

Now wrong, but we can definitely simplify your API

> from os import environ
> from Ft.Lib.Uri import OsPathToUri
> from Ft.Xml import InputSource
> from Ft.Xml.Xslt import Processor
>
> def buildPage():
>     try:
>         xsluri = OsPathToUri('xsl/plainpage.xsl')
>         xmluri = OsPathToUri('website.xml')
>
>         xsl = InputSource.DefaultFactory.fromUri(xsluri)
>         xml = InputSource.DefaultFactory.fromUri(xmluri)
>
>         proc = Processor.Processor()
>         proc.appendStylesheet(xsl)
>
>         params = {"url":environ['QUERY_STRING'].split("=")[1]}
>         for i, v in enumerate(environ['QUERY_STRING'].split("/")[1:]):
>             params["selected_section%s" % (i + 1)] = "/" + v
>
>         return proc.run(xml, topLevelParams=params)
>     except:
>         return "Error blah blah"
>
> print "Content-Type: text/html\n\n"
> print buildPage()

This should work:

from os import environ
from Ft.Xml.Xslt import Transform

def buildPage():
    try:
        params = {"url":environ['QUERY_STRING'].split("=")[1]}
        for i, v in enumerate(environ['QUERY_STRING'].split("/")[1:]):
            params["selected_section%s" % (i + 1)] = "/" + v

        return Transform('website.xml', 'xsl/plainpage.xsl',
topLevelParams=params)
    except:
        return "Error blah blah"

print "Content-Type: text/html\n\n"
print buildPage()

-- % --

For what it's worth I just developed, and switched to WSGI middleware
that only does the transform on the server side if the client doesn't
understand XSLT.  It's called applyxslt and is part of wsgi.xml [1].
That reduces server load, and with caching (via Myghty), there's really
no issue for me.  For more on WSGI middleware see [2].

[1] http://uche.ogbuji.net/tech/4suite/wsgixml/
[2] http://www.ibm.com/developerworks/library/wa-wsgi/

--
Uche Ogbuji                               Fourthought, Inc.
http://uche.ogbuji.net                    http://fourthought.com
http://copia.ogbuji.net                   http://4Suite.org
Articles: http://uche.ogbuji.net/tech/publications/



From simonwittber at gmail.com  Wed Sep 13 03:26:21 2006
From: simonwittber at gmail.com (Simon Wittber)
Date: 13 Sep 2006 00:26:21 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<7x8xkol0n9.fsf@ruckus.brouhaha.com>
Message-ID: <1158132381.716706.243040@e63g2000cwd.googlegroups.com>

Paul Rubin wrote:
> "Simon Wittber" <simonwittber at gmail.com> writes:
> > I've just noticed that os.fork is not available on Win32. Ouch.
>
> Use the subprocess module.

I can't see how subprocess.Popen can replace a fork. Using a manually
started process is not really viable, as it does not automatically
share pre-built (read-only) data between the processes. If it can, I'd
really like to know how...

Yikes. This is a bummer. The conclusion seems to be, I cannot use any
common cross platform, true concurrency strategies in my games. On top
of that, I can't really use any form of concurrency on Win32.

Lets hope we get some super fast SMP friendly backends for PyPy sooner
rather than later!

-Sw.



From maric at aristote.info  Fri Sep  8 07:56:47 2006
From: maric at aristote.info (Maric Michaud)
Date: Fri, 8 Sep 2006 13:56:47 +0200
Subject: Request for tips on my first python script.
In-Reply-To: <slrneg2lmv.6ug.sybrenUSE@schuimige.stuvel.eu>
References: <mailman.148.1157679775.5279.python-list@python.org>
	<slrneg2lmv.6ug.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <200609081356.47882.maric@aristote.info>

Le vendredi 08 septembre 2006 13:41, Sybren Stuvel a ?crit?:
> > HOME = os.path.expanduser("~")
>
> I wouldn't use this. Just use os.environ['HOME']. In most cases it
> turns out to be the same directory, but it adds more flexibility. If
> someone wants your app to read/write to another directory, he/she can
> simply change the HOME environment variable.

and ?

maric at redflag2 jeu sep 07 09:17:51:~/test$ export HOME=/etc
maric at redflag2 ven sep 08 13:53:17:/home/maric/test$ cd ~
maric at redflag2 ven sep 08 13:53:22:~$ pwd
/etc
maric at redflag2 ven sep 08 13:55:46:~$ python -c 'import os
> print os.path.expanduser("~")
> '
/etc


-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From sc_wizard29 at hotmail.com  Fri Sep 15 03:18:14 2006
From: sc_wizard29 at hotmail.com (sc_wizard29 at hotmail.com)
Date: 15 Sep 2006 00:18:14 -0700
Subject: Check if variable is an instance of a File object
Message-ID: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>

Hi everyone,

Maybe these questions will sound strange to you, but I sometime have a
hard time switching from Java to Python ;-)

Let's say I have a function like this :

def show_lines(file):
	for next_line in file:
		...

What can I do to be sure that the input argument is indeed a 'File'
object ?

#1 : should I start by checking that 'file' is indeed an instance of a
File object ? (and how do I do this ?)
#2 : should I do nothing ? (but I don't like the idea of risking to
have a runtime exception raised somewhere)

Thanks for helping...



From steve at holdenweb.com  Tue Sep 12 15:50:12 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 20:50:12 +0100
Subject: "filtered view" upon lists?
In-Reply-To: <450705F0.8050002@freakmail.de>
References: <mailman.337.1158062350.5279.python-list@python.org>	<878xkpb5wa.fsf@gmail.com>	<4506D471.7010905@freakmail.de>
	<ee6nre$atu$1@sea.gmane.org> <450705F0.8050002@freakmail.de>
Message-ID: <45070F74.3000706@holdenweb.com>

Wildemar Wildenburger wrote:
> Steve Holden wrote:
> 
>>> I think SQL views are the direct analog.
>>>
>> I don't think they are. If you add a non-conforming row to a SQL view 
>> it doesn't appear int he view. If you modify a row in an updateable 
>> view so it no longer confirms with the view's conditions it disappears 
>> from the view.
> 
> Me and my wording again: I typed 'direct analog' but meant 'somewhat 
> analog'.
> 
>> Also you don't say whether changes to l are supposed to be reflected 
>> in f in the same way that changes to f are reflected in l.
> 
> Right. Yes, the synchronicity (a word?) is meant to be in both directions.
> 
>> It might be better if you were to explain your use case: what is this 
>> beast supposed to be for?
> 
> I have a database of interconnected objects. Each object has a list 
> tuples; these tuples hold references to other objects and details about 
> the type of connection.
> The 'views' I am imagining are sub-lists of this one list, based on the 
> connection types. Order is important here, that's why I'm not using sets.
> BTW: I have gone the way of nested lists before and found it too rigid 
> and complicated to use.
> 
> 
>>> A bit clearer now?
>>>
>> Hardly at all. Frankly it doesn't seem as though you really know what 
>> the specifications are yourself, so you can hardly expect us to divine 
>> them by use of our psychic powers. Besides which, psychic powers cost 
>> extra ;-)
> 
> Right again. I'm not sure what I want yet as I'm still exploring ideas. 
> If something /like/ the above had existed (which by now I'm gathering is 
> not the case) I'd just adapted my ideas to the specs given.
> 
> 
>> So give us that use case so we get a bit more insight into why you 
>> even see the need for such a thing and how you want it ti behave. Or 
>> is all this just theoretical?
> 
> No no, its very much real. Just not as fleshed out as it might be --- 
> I'm sort of an explorative coder; I usually don't know how something is 
> going to work until it works.
> 
That's all very well, but you might want to Google for "YAGNI". You 
still haven't given us mcuh of a clue about the real need.

> Thx for the effort :)Happy to (tray to) help.

regards
  Steve

-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden


From bearophileHUGS at lycos.com  Sat Sep 30 21:15:04 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 30 Sep 2006 18:15:04 -0700
Subject: builtin regular expressions?
In-Reply-To: <MPG.1f88cf81c13811a398968d@news.individual.de>
References: <451e37a5$1@news.vo.lu><efm04n$lb3$1@mlucom4.urz.uni-halle.de>
	<mailman.1003.1159631137.10491.python-list@python.org>
	<MPG.1f88cf81c13811a398968d@news.individual.de>
Message-ID: <1159665303.981559.101610@k70g2000cwa.googlegroups.com>

Thorsten Kampe:
> And the simple reason why Regular Expressions are not a part of the
> core Python language is that Regular Expressions are overrated. They
> are simply not the preferred tool for every kind of text manipulation
> and extraction.

And their syntax is ugly and low level, they are difficult to read and
debug.
A way better syntax can probably be adopted (reverb and Pyparsing seem
much more pythonic).

Bye,
bearophile



From steve at holdenweb.com  Fri Sep 22 21:16:58 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 21:16:58 -0400
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <1158959361.458232.278660@h48g2000cwc.googlegroups.com>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>	<4nihfbFa61lsU1@individual.net>	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>	<4nivr5Fan2s7U2@individual.net>
	<1158959361.458232.278660@h48g2000cwc.googlegroups.com>
Message-ID: <ef21so$km9$1@sea.gmane.org>

MonkeeSage wrote:
> Hi Saizan,
> 
> I don't really see anything wrong with creating a custom class for
> evaluating those kinds of logical statements. It does make the code for
> statements more concise and easy to follow (with less binding
> ambiguity). Mabye something like this would help:
> 
> class logic(int):
>   def __sub__(self):
>     return logic(not self)
>   def eval(self, statement):
>     return bool(statement)
>   def make_logical(self, *args):
>     out = []
>     for arg in args:
>       out.append(logic(arg))
>     return out
> 
> l = logic()
> # init a buch of variables (or a list) at once
> x, y, z = l.make_logical(True, False, True)
> # or one at a time
> v = logic(False)
> # evaluate a statement
> print l.eval((x and y) or (-z or -v)) # True
> 
Is this a serious suggestion, or simply an attempt at sardonic obscurantism?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Tue Sep 26 20:05:12 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 01:05:12 +0100
Subject: QuoteSQL
In-Reply-To: <efc5ec$can$2@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<mailman.560.1159188345.10491.python-list@python.org>	<ef9nmi$snj$2@lust.ihug.co.nz>	<mailman.637.1159253927.10491.python-list@python.org>	<efajs7$hbo$1@lust.ihug.co.nz>	<mailman.679.1159277222.10491.python-list@python.org>
	<efc5ec$can$2@lust.ihug.co.nz>
Message-ID: <efcf66$mig$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.679.1159277222.10491.python-list at python.org>, Steve
> Holden wrote:
[...]
>>Sadly your assertions alone fail to convince. Perhaps you could provide
>>a concrete example?
> 
> 
> Sorry, that turned out to be wrong. You do in fact need to escape the
> escapes on wildcards.

Thank you.
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Tue Sep 26 09:02:44 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 06:02:44 -0700
Subject: Printing a percent sign
In-Reply-To: <mailman.668.1159269690.10491.python-list@python.org>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>
	<efaq7s$rfd$6@lust.ihug.co.nz>
	<1159263309.699677.301130@m7g2000cwm.googlegroups.com>
	<efavlm$6ek$2@lust.ihug.co.nz>
	<1159268765.544655.229070@i3g2000cwc.googlegroups.com>
	<mailman.668.1159269690.10491.python-list@python.org>
Message-ID: <1159275763.985455.153220@m7g2000cwm.googlegroups.com>


Fredrik Lundh wrote:
> John Machin wrote:
>
> > I'll take your word for it; it's been quite a while :-) *Something* in
> > the dim dark past worked like that
>
> makefiles?

Bingo! Actually, double bingo!!

>From the docs for GNU Make:
"""
Because dollar signs are used to start make variable references, if you
really want a dollar sign in a target or prerequisite you must write
two of them, `$$' (see How to Use Variables). If you have enabled
secondary expansion (see Secondary Expansion) and you want a literal
dollar sign in the prerequisites lise [sic], you must actually write
four dollar signs (`$$$$').
"""

Cheers,
John



From nogradi at gmail.com  Fri Sep 15 18:49:13 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 16 Sep 2006 00:49:13 +0200
Subject: something for itertools
In-Reply-To: <9afea2ac0609151528na82058fs5d454274b4e785ab@mail.gmail.com>
References: <R52454576.664.295.1@mx-extra>
	<9afea2ac0609151528na82058fs5d454274b4e785ab@mail.gmail.com>
Message-ID: <5f56302b0609151549t48dd70d7pd136f29255bc7cf6@mail.gmail.com>

> > In a recent thread,
> > http://mail.python.org/pipermail/python-list/2006-September/361512.html,
> > a couple of very useful and enlightening itertools examples were given
> > and was wondering if my problem also can be solved in an elegant way
> > by itertools.
> >
> > I have a bunch of tuples with varying lengths and would like to have
> > all of them the length of the maximal and pad with None's. So
> > something like
> >
> > a = ( 1, 2, 3 )
> > b = ( 10, 20 )
> > c = ( 'x', 'y', 'z', 'e', 'f' )
> >
> > should turn into
> >
> > a = ( 1, 2, 3, None, None )
> > b = ( 10, 20, None, None, None )
> > c = ( 'x', 'y', 'z', 'e', 'f' )
> >
>
> or maybe a one liner  :)
>
> >>> (a + 5*(None,))[:5]
> (1, 2, 3, None, None)
>
> >>> pad_to = 5
> >>> (a + pad_to*(None,))[:pad_to]
> (1, 2, 3, None, None)
> >>> (b + pad_to*(None,))[:pad_to]
> (10, 20, None, None, None)
> >>> (c + pad_to*(None,))[:pad_to]
> ('x', 'y', 'z', 'e', 'f')
> >>>

Well, something like this is what I actually do. But for this first I
have to loop over all tuples and pick out the maximal length, so over
all it won't be a one liner but two loops.


From sandravandale at yahoo.com  Mon Sep 18 15:44:32 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 18 Sep 2006 12:44:32 -0700
Subject: Cross-process dictionary/hashtable
Message-ID: <1158608672.610841.271530@b28g2000cwb.googlegroups.com>

A dictionary that can be shared across processes without being
marshaled?

Is there such a thing already for python?

If not is there one for C maybe?

I was just thinking how useful such a thing could be. It's a great way
to share things between processes. For example I use a cache that
subclasses a dictionary. It would be trivial to modify it to work
across processes by changing the base class and the locking mechanism.

Thanks,
-Sandra



From onurb at xiludom.gro  Mon Sep 18 08:10:11 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 18 Sep 2006 14:10:11 +0200
Subject: Where can i download mod_webkit from?
In-Reply-To: <1158544714.687305.163330@m73g2000cwd.googlegroups.com>
References: <1158544714.687305.163330@m73g2000cwd.googlegroups.com>
Message-ID: <450e8ca4$0$15663$626a54ce@news.free.fr>

goykhmanster at gmail.com wrote:
> Hi
> 
> I am trying to get webware for python running on Apache.  I want to get
> it working with mod_webkit, but for the life of me i can't find a
> webpage where i can download a source for it or maybe an rpm.  If
> anyone knows the download page, i'd greatly appreciate if you share it
> with me.

http://www.webwareforpython.org/WebKit/Docs/InstallGuide.html#mod-webkit
"""
The source code and a README file describing how to configure and build
mod_webkit are located in the Webware/WebKit/Adapters/mod_webkit
"""

> Thanks
> 


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From michele.simionato at gmail.com  Wed Sep 20 11:49:39 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 20 Sep 2006 08:49:39 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
Message-ID: <1158767379.579861.91080@k70g2000cwa.googlegroups.com>

(I don't believe I am responding to a notorious troll ...)

One (bad) solution is to write in your sitecustomize.py the following:

$ echo /usr/lib/python/sitecustomize.py
import __builtin__

class Object(object):
    def debug(self):
        print 'some debug info'

__builtin__.object = Object

then you can do for instance

>>> class C(object): pass
>>> C().debug()
some debug info

All class inheriting from object will have the additional debug method.
However I DO NOT
RECOMMEND THIS SOLUTION FOR ANY SERIOUS WORK. For instance, it broke my
IPython installation and I am pretty sure it will broke other things
too.
But it may work for debugging purposes, if not for production use, so I
thought it was worth
posting.

       Michee Simionato



From gandalf at designaproduct.biz  Tue Sep 12 10:05:12 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Tue, 12 Sep 2006 16:05:12 +0200
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <1158016994.349214.264610@q16g2000cwq.googlegroups.com>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>	<4505B54C.30905@designaproduct.biz>	<mailman.285.1158002192.5279.python-list@python.org>	<1158005948.883368.185320@m73g2000cwd.googlegroups.com>	<mailman.289.1158006990.5279.python-list@python.org>
	<1158016994.349214.264610@q16g2000cwq.googlegroups.com>
Message-ID: <4506BE98.3030504@designaproduct.biz>

Daniel Crespo ?rta:
> Hi Laszlo,
>
> I have read that. It's the wrapper for the usage of OpenSSL, so I have
> to install it. I have downloaded the Borland C++ compiler, and I'm
> doing so right now, but I'm not getting good results yet.
>   
You do not need any compiler. You just need to install the openssl 
binaries and the wrapper.
> I tried to import OpenSSL, it seems to work.
>   
Great.
> Now, I want to try the code I submited earlier, but I need the .pem
> files. You told me to change generate.sh to generate.bat. How can I do
> that?
>   

Basically, use "del" instead of "rm" and use "move" instead of "mv". Use 
<yourdomain.com> instead of $1. Moreover, openssl.exe must be on your 
path. That's all.

Try this (untested):

openssl req -config openssl.cnf -new -out my-server.csr
openssl rsa -in privkey.pem -out my-server.key
openssl x509 -in my-server.csr -out my-server.cert -req -signkey my-server.key -days 1500
openssl x509 -in my-server.cert -out my-server.der.crt -outform DER

move my-server.csr yourdomain.com.csr
move my-server.cert yourdomain.com.cert.pem
move my-server.key yourdomain.com.key.pem
move my-server.der.crt yourdomain.com.der.crt

del privkey.pem


  Laszlo



From peonleon at gmail.com  Tue Sep  5 19:47:07 2006
From: peonleon at gmail.com (Leon)
Date: 5 Sep 2006 16:47:07 -0700
Subject: Higher-level OpenGL modules
References: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
	<1157495726.835786.243180@p79g2000cwp.googlegroups.com>
Message-ID: <1157500027.412280.109570@i42g2000cwa.googlegroups.com>

Thanks guys!, Ill look into your suggestions. I'm actually currently
working directly with pyOpenGL, but hopefully Ill find something that
would make me more efficient. I might end up writing a library myself.



From ralmeida at gmail.com  Tue Sep 19 09:18:11 2006
From: ralmeida at gmail.com (Rob De Almeida)
Date: 19 Sep 2006 06:18:11 -0700
Subject: Compile AST to bytecode?
In-Reply-To: <Xns98438DE1018EEduncanbooth@127.0.0.1>
References: <1158668372.706298.123280@i3g2000cwc.googlegroups.com>
	<Xns98438DE1018EEduncanbooth@127.0.0.1>
Message-ID: <1158671891.530951.277330@k70g2000cwa.googlegroups.com>

Duncan Booth wrote:
> > I would like to compile an AST to bytecode, so I can eval it later.
> I'm not sure there are any properly documented functions for converting an
> AST to a code object, so your best bet may be to examine what a
> pycodegen class like Expression or Module actually does.

Thanks, Duncan. It worked perfectly. :-)

For arbitrary nodes I just had to wrap them inside an Expression node:

>>> ast = compiler.ast.Expression(node)
>>> ast.filename = 'dummy'
>>> c = compiler.pycodegen.ExpressionCodeGenerator(ast)
>>> obj = eval(c.getCode(), scope)

--Rob



From anthra.norell at tiscalinet.ch  Sat Sep  2 04:48:34 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Sat, 2 Sep 2006 10:48:34 +0200
Subject: Using eval with substitutions
References: <1157022920.299174.22860@m73g2000cwd.googlegroups.com>
	<1157171590.425375.157380@e3g2000cwe.googlegroups.com>
Message-ID: <015601c6ce6c$933d5d60$0201a8c0@mcuf7>


----- Original Message -----
From: "Carl Banks" <pavlovevidence at gmail.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Saturday, September 02, 2006 6:33 AM
Subject: Re: Using eval with substitutions


> abhishek at ocf.berkeley.edu wrote:
> > >>> a,b=3,4
> > >>> x="a+b"
...
 > Careful.  Here be dragons.
...
> However, this is just a big potentially dangerous hack.  It's probably
...

> Carl Banks

-----------------------

Dragons indeed!
      To wit, I did get carried away a little with my suggestions and derived a class Formlua_Expander from SE. A few hours later it
worked just beautifully:

>>> FE = FORMEX.Formula_Expander ()
>>> FE.define ('l=102.8')
>>> FE.define ('d=8.5')
>>> FE.define ('pi=3.14159')
>>> FE.define ('r=d/2')
>>> FE.define ('section=r*r*pi')
>>> FE.define ('pipe_volume=l*section')
>>> FE ('pipe_volume')
5833.3828517499996
>>> FE.expand ('pipe_volume')
'((102.8)*(((8.5)/2)*((8.5)/2)*(3.14159)))'

The expansion cascade:

Data Chain
----------------------------------------------------------------------------------
  pipe_volume
0 --------------------------------------------------------------------------------
  (l*section)
1 --------------------------------------------------------------------------------
  (l*(r*r*pi))
2 --------------------------------------------------------------------------------
  (l*((d/2)*(d/2)*pi))
3 --------------------------------------------------------------------------------
  ((102.8)*(((8.5)/2)*((8.5)/2)*(3.14159)))
----------------------------------------------------------------------------------

Wonderful! Some more:

>>> FE.define ('m_per_foot=0.3048')
>>> FE.define ('pipe_volume_metric=pipe_volume*m_per_foot')
>>> FE ('pipe_volume_metric')

Traceback (most recent call last):
  File "<pyshell#199>", line 1, in -toplevel-
    FE ('pipe_volume_metric')
  File "c:\i\sony\fre\src\python\FORMEX.py", line 175, in __call__
    try: return eval (expression)
  File "<string>", line 1
    (((102.8)*(((8.5)/2)*((8.5)/2)*(3.14159)))*m_pe((8.5)/2)_foot(102.8)e)
                                                                ^
Oops!

>>> FE.show (1)
...
(1st pass) ...
    1: |pipe_volume_metric|->|(pipe_volume*m_per_foot)|
(2nd pass) ...
    1: |pipe_volume|->|(l*section)|
(3rd pass) ...
    1: |section|->|(r*r*pi)|
(4th pass) ...
    1: |r|->|(d/2)|
(5th pass) ...
    1: |d|->|(8.5)|
    2: |l|->|(102.8)|
    3: |m_per_foot|->|(0.3048)|
    4: |pi|->|(3.14159)|

Data Chain
----------------------------------------------------------------------------------
  pipe_volume_metric
0 --------------------------------------------------------------------------------
  (pipe_volume*m_per_foot)
1 --------------------------------------------------------------------------------
  ((l*section)*m_per_foot)
2 --------------------------------------------------------------------------------
  ((l*(r*r*pi))*m_per_foot)
3 --------------------------------------------------------------------------------
  ((l*((d/2)*(d/2)*pi))*m_pe(d/2)_foot)
4 --------------------------------------------------------------------------------
  (((102.8)*(((8.5)/2)*((8.5)/2)*(3.14159)))*m_pe((8.5)/2)_foot(102.8)e)
----------------------------------------------------------------------------------

An unwanted substitution occurs in pass 4 when the 'r' in 'm_per_foot' is replaced
by the substitution meant for 'r' (radius).

Conclusion: Forget it! - Forget this approach anyway. There are probably formula parsers out there that are more intelligent than
this hack.

Frederic

(Learning by making mistakes is faster than by avoiding mistakes and if it's fun on top of it all the better.)




From bignose+hates-spam at benfinney.id.au  Wed Sep 27 00:44:00 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 27 Sep 2006 14:44:00 +1000
Subject: optparse
References: <C6nSg.79$M31.50@newsfe05.lga>
Message-ID: <87hcytnckv.fsf@benfinney.id.au>

rick <rickzolun1 at charter.net> writes:

> usage: DelimTOFixedWidth.py <input filename> <output filename> [options]

That's not the command-line argument style that optparse models. It
should be:

    command_name [options] <arg1> <arg2>

In other words, the options (optionally) appear before the non-option
arguments. This is the convention followed by most command-line tools,
and it's what users expect.

There are other command-line parser modules (e.g. argparse), perhaps
you can look to them for different functionality.

-- 
 \         "If nature has made any one thing less susceptible than all |
  `\    others of exclusive property, it is the action of the thinking |
_o__)                       power called an idea"  -- Thomas Jefferson |
Ben Finney



From roy at panix.com  Sat Sep 30 19:36:50 2006
From: roy at panix.com (Roy Smith)
Date: Sat, 30 Sep 2006 19:36:50 -0400
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de> <451ea5cc$1@news.vo.lu>
	<1159642479.968928.34760@k70g2000cwa.googlegroups.com>
	<efmgtt$q1m$1@mlucom4.urz.uni-halle.de>
	<pan.2006.09.30.20.56.40.77304@gmx.net>
Message-ID: <roy-87DD98.19365030092006@reader1.panix.com>

In article <pan.2006.09.30.20.56.40.77304 at gmx.net>,
 Marc 'BlackJack' Rintsch <bj_666 at gmx.net> wrote:

> In <efmgtt$q1m$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:
> 
> > I fail to see the benefit of a re-object, I consider these to
> > be just there because regexes aren't in the core language.
> 
> One benefit is that it's an object.  You can stuff it into a dictionary or
> give it as argument to a function.

More to the point:

You can stick it in a bottle, you can hold it in your hand, AMEN!


From nemesis at nowhere.invalid  Tue Sep 12 16:15:58 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Tue, 12 Sep 2006 20:15:58 GMT
Subject: [ANN] XPN 0.6.5 released
Message-ID: <20060912201557.3812.4625.XPN@orion.homeinvalid>

XPN (X Python Newsreader) is a multi-platform newsreader with Unicode
support. It is written with Python+GTK. It has features like
scoring/actions, X-Face and Face decoding, muting of quoted text,
newsrc import/export, find article and search in the body, spoiler
char/rot13, random taglines and configurable attribution lines.

You can find it on:

http://xpn.altervista.org/index-en.html

or

http://sf.net/projects/xpn


Changes in this release:

    * v0.6.5: now is possible to customize the keyboad shortcuts. XPN will also
              check for duplicated shortcuts
    * v0.6.5: added a new way to show threads, now is possible to put the
              threads expander in the From column
    * v0.6.5: now is possible to subscribe a group writing its name manually
              so you don't have to download the groups list
    * v0.6.5: now is possible to limit the number of articles headers to 
              download with the Get New Headers function
    * v0.6.5: now is possible to choose the headers to show in the Article Pane,
              and the background color of this area now is customizable
    * v0.6.5: added two new layouts for the main window
    * v0.6.5: now is possible to re-apply the scoring/action rules on the 
              articles you have already downloaded.
    * v0.6.5: fixed a bug in the Config Window that caused XPN not to change the
              color for URLs.
    * v0.6.5: fixed a bug that caused XPN not open the next article when the 
              first thread was selected and collapsed
    * v0.6.5: fixed a bug in the View Parent function
    * v0.6.5: fixed a bug in the Export Newsrc function, that caused ad crash 
              trying to export groups with 0 articles inside.

XPN is translated in Italian French and German, if you'd like to translate it
in your language and you are familiar with gettext and po-files
editing please contact me (xpn at altervista.org).
-- 
I got real close to seeing Elvis, but my shovel broke.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From DustanGroups at gmail.com  Mon Sep 25 22:05:29 2006
From: DustanGroups at gmail.com (Dustan)
Date: 25 Sep 2006 19:05:29 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159235326.385036.233440@i3g2000cwc.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
Message-ID: <1159236329.338078.326440@i3g2000cwc.googlegroups.com>


walterbyrd wrote:
> >
> > Well I do. So do the other dozen or so developers at my company. We're looking
> > to hire a few more, in fact.
> >
>
> I'm surprised. It seems I never see listings for python developers.
>
> I didn't mean any disrespect. I think python is a great language. It
> just doesn't seem like there is much demand for professional python
> developers.

What about Google? A good portion of their work is in python...



From torerik81 at gmail.com  Sat Sep  9 10:10:03 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Sat, 09 Sep 2006 16:10:03 +0200
Subject: What algorithm does Python use to evaluate: if substring in string
Message-ID: <eduhvs$46c$1@news.uit.no>

I would be surprised if it is the naive:

m = 0
s1 = "me"
s2 = "locate me"
s1len = len(s1)
s2len = len(s2)
found = False

while m + s1len <= s2len:
	if s1 == s2len[m:m+s1len]:
		found = True
		break
	m += 1


From wildemar at freakmail.de  Fri Sep 15 07:02:05 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Fri, 15 Sep 2006 13:02:05 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <624934630609150047w74c7d752i9fc9020044c76bb1@mail.gmail.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>	
	<4509D2E4.9060503@freakmail.de>
	<624934630609150047w74c7d752i9fc9020044c76bb1@mail.gmail.com>
Message-ID: <450A882D.3050605@freakmail.de>

Ramon Diaz-Uriarte wrote:
> - I was referring to executing arbitrary sections of a Python file in
> a Python interpreter in an "integrated way". When I tried JEdit, I
> think that Jython was the way to go. (And I think this was also the
> case for a while, at least to judge from D. Metrz's review
> http://www-128.ibm.com/developerworks/library/l-cpyide/
> 
> 
>> The console plugin (probably THE most useful of the pack) gives you a
>> system shell and means to start compilers/interpreters based on your
> 
> But isn't this a "generic console": you go to the console, and then
> type "python2.3" or "python2.4" or whatever? How do you send arbitrary
> selections of Python code from the file you are editing to this shell?
> Is there a way to mark a section of code and have it evaluated by the
> python interpreter? Or a function definition?

Ahh, I see. Well, you're right, that is not that easily possible. But 
you know what? I've never missed such functionality; the "if __name__ 
..." trick always sufficed for me. Buts thats taste of course, lets not 
debate that.
So OK, jEdit is not that 'integrated' after all. Oh well ...

:)
wildemar


From herrekberg at users.sf.net  Tue Sep 26 19:19:25 2006
From: herrekberg at users.sf.net (Pontus Ekberg)
Date: Wed, 27 Sep 2006 01:19:25 +0200
Subject: problem moving from char to integer
References: <1159312523.880618.316150@m7g2000cwm.googlegroups.com>
Message-ID: <pan.2006.09.26.23.19.22.800843@users.sf.net>

Melih Onvural wrote:

> Group,
> 
> I'm trying to get a very basic cast from a string to an integer
> working. Here is what I'm doing:
> 
> for i in url:
>      result[counter] = int(i)
>      counter += 1;
> 
> return result;
> 
> anything that I'm doing drastically wrong? Mac OS 10.4, MacPython
> upgraded to 2.4. Thanks for any help,
> 
> Melih

In what way does it not work? Please post the entire code or at least the
result of your code.




From bob at passcal.nmt.edu  Thu Sep 28 17:54:29 2006
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Thu, 28 Sep 2006 15:54:29 -0600
Subject: Tkinter Text widget incremental search
Message-ID: <6vOdnRIsBY4L2YHYnZ2dnUVZ_v-dnZ2d@nmt.edu>

I want to create a search function on a Text() widget full of text like the 
incremental search in emacs -- if you type an "f" emacs goes to the first 
"f", type another "f" and it goes to the first place where "ff" shows up in 
the text, etc.

How would you search the text of the Text() for a string like "ff" and get 
back the proper index position (line.char) AND have that take into account 
word wrapping?  Text().get(0.0, END).split("\n") returns a bunch of lines, 
but one line in the List may be many text widget/screen lines.

Thanks!

Bob




From cappy2112 at gmail.com  Sat Sep 23 14:17:13 2006
From: cappy2112 at gmail.com (Cappy2112)
Date: 23 Sep 2006 11:17:13 -0700
Subject: Fatal error after RE-installing Python 2.3.4
In-Reply-To: <1158979319.243945.286330@k70g2000cwa.googlegroups.com>
References: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
	<1158979319.243945.286330@k70g2000cwa.googlegroups.com>
Message-ID: <1159035433.781412.238850@i3g2000cwc.googlegroups.com>


> What happens when you run "C:\Python2.3\python.exe" from the command
> line (or the equivalent path)? How about pythonw.exe (or the windowed
> equivalent, not sure about the naming)?

>>Are .py and .pyw files displayed with the correct icons?
Yes.

>>When installing Python packages, is Python 2.3 detected as the default installation?
Yes

>>> Finally, does your $PATH include the Python directory? That could also
> cause problems if it doesn't.

I doubt that the path would cause this type of problem. If the path
wasn't found the exe wouldn't run, and this error wouldnt be displayed.

>>> And, what sorts of warnings did PyChecker display? Missing files/modules?
Missing modules, mostly, but Pychecker isnt a concern at this point.
It was merely what prompted me to re-install everything.

All of my tests scripts could be executed via python my script.py, from
a cmd console before I re-installed.

I have unisntaleld & re-installed Python 2.3.4 many times- using
different installers, to eliminate a corrupted installation medmium,
but they all result in the same error when I run python from a cmd
console.



From gerrit.muller at embeddedsystems.nl  Tue Sep 12 05:52:11 2006
From: gerrit.muller at embeddedsystems.nl (Gerrit Muller)
Date: Tue, 12 Sep 2006 11:52:11 +0200
Subject: Get CPU usage of a single process in Windows
In-Reply-To: <1157737328.810771.148890@m79g2000cwm.googlegroups.com>
References: <eds7bh$2h8o$1@news.uit.no>
	<1157737328.810771.148890@m79g2000cwm.googlegroups.com>
Message-ID: <ee600b$15gi$1@mud.stack.nl>

Tim Golden wrote:
<...snip...>
>>This should be possible as Taskmanager tracks CPU usage for every
>>process... Anyone know how this can be done?
>>
> 
> WMI can probably do the trick. If you can find something on Google
> for wmi cpu usage (or something similar) then translation to Python's
> usually quite easy. I'm fairly sure I've got an example somewhere, but
> I can't lay my hands on it at the mo.
> 
> TJG
> 
Tim Golden's general documentation/examples about WMI are at: 
<http://tgolden.sc.sabren.com/python/wmi.html>.

If you have a working example of CPU usage could you post the result? I 
would be interested.

kind regards, Gerrit Muller

-- 
Gaudi systems architecting:
<http://www.gaudisite.nl/>


From daniel.huangfei at gmail.com  Sun Sep 24 04:13:25 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 24 Sep 2006 01:13:25 -0700
Subject: where the hell is the run command of PyPe editor?
Message-ID: <1159085605.006385.299880@i3g2000cwc.googlegroups.com>

I'm trying to use PyPe, but I just got so frustrated when attempting to
run a script, this is the very first feature I would use for an editor,
OMG. I browsed through every single menu item and gave up...

any help would be appreciated,  (the most silly question ever, sounds
like a new computer user. ;--(    )



From wescpy at gmail.com  Wed Sep 27 03:16:56 2006
From: wescpy at gmail.com (wesley chun)
Date: Wed, 27 Sep 2006 00:16:56 -0700
Subject: does anybody earn a living programming in python?
Message-ID: <78b3a9580609270016u47b3b100m253af879ee3d895d@mail.gmail.com>

> From: "OKB (not okblacke)" <brenNOSPAMbarn at NObrenSPAMbarn.net>
> Date: Wed, 27 Sep 2006 04:04:02 GMT
>
>> - at yahoo, we developed yahoo!mail in python (and some C++)
>> - at synarc, i wrote software for doctors in python (and some C)
>> - at ironport, most everything is in python (and some C, PyRex)
>
>     	This is interesting to me in that all these jobs also involve C.
> I'm not the original poster, but I'd be interested to hear about people
> who make a living programming Python WITHOUT knowing C.


you make a good point, however, when you have to write an extension
(performance, protect source code, library interface, etc.), you must
write it in the natively-supported language in which the
implementation of Python you're using is compiled in. for (C)Python,
it's C/C++, Java for Jython, and C#/VB.NET for IronPython.

if you have been successful at building projects completely in pure
Python, that's great, but you're limited in that you won't be able to
take advantage of the benefits of extensions or necessarily be able to
hook up to native libraries that don't already have a Python adapter
written for them. for the past employment i listed, the primary use of
C was either an extension or a library adapter. of course, i never
claimed above to have written any of that C code. ;-)

my final thought is that you cannot truly appreciate a tool like
Python until you've been in the trenches with C and done all that
stuff that is now a "waste of time."

cheers,
-- wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From grante at visi.com  Fri Sep 15 15:47:07 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 19:47:07 -0000
Subject: Limitate speed of a socket-based data transferring
References: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>
	<zpAOg.12468$xQ1.1498@newsread3.news.pas.earthlink.net>
	<12gllfkki918r7a@corp.supernews.com>
	<mailman.141.1158341957.10491.python-list@python.org>
Message-ID: <12gm0prphne2hc9@corp.supernews.com>

On 2006-09-15, Steve Holden <steve at holdenweb.com> wrote:

>>>The sender will send at whatever rate they are capable of, so
>>>packets may just become backlogged on your receiving socket
>> 
>> 
>> When that happens, the sending end of the socket will throttle
>> down to match the rate at which data is being read from the
>> socket.
>
> Of course this depends crucially on the window size. Since the
> addition of the window scaling TCP option it's been possible
> to specify very large windows, which are useful over
> high-bandwidth high-delay links.

True.  If the window size is large compared to the amount of
data being transferred, then the throttling won't happen.

> The remote (send) throttling will only start to cut in when
> the window is full (since the whole point of the sliding
> window mechanism is to allow continuous transmission in the
> face of acknowledgment delay).

Yup.

-- 
Grant Edwards                   grante             Yow!  -- I have seen the
                                  at               FUN --
                               visi.com            


From sjdevnull at yahoo.com  Fri Sep 22 16:50:12 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 22 Sep 2006 13:50:12 -0700
Subject: what is the best practice to separate Pygtk and long running
	thread code
In-Reply-To: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
References: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
Message-ID: <1158958212.238667.275240@m7g2000cwm.googlegroups.com>

seb wrote:
> Hi,
>
> I am using pygtk for the first times.
>
> I am wondering what would be the best "pattern" to interface pygtk with
> a thread.
>
> The thread is collecting informations (over the network for example) or
> is doing some long calculations.

It sounds like you don't need to share all your memory--any time you're
trying to "seperate" threads, you probably want to be using processes
instead.



From aahz at pythoncraft.com  Wed Sep 27 00:40:08 2006
From: aahz at pythoncraft.com (Aahz)
Date: 26 Sep 2006 21:40:08 -0700
Subject: does anybody earn a living programming in python?
References: <mailman.728.1159298399.10491.python-list@python.org>
	<Xns984AD64A14848OKB@199.45.49.11>
Message-ID: <efcvb8$9to$1@panix3.panix.com>

In article <Xns984AD64A14848OKB at 199.45.49.11>,
OKB (not okblacke) <brenNOSPAMbarn at NObrenSPAMbarn.net> wrote:
>
>    	This is interesting to me in that all these jobs also involve C.  
>I'm not the original poster, but I'd be interested to hear about people 
>who make a living programming Python WITHOUT knowing C.  

In more than two years in my current job, the only time I've done any C
programming was one time when we wanted to precisely specify how much
memory was getting consumed per unit time.  IOW, it was more of a
sysadmin usage because we were trying to figure out why one machine was
crashing.  I spend less than 5% of my time in Java or shell scripting.
There's a fair amount of SQL, and we have a proprietary HTML templating
language that uses a lot of pseudo-Python.  Other than that, it's all
Python, baby.  We actually do have a fair amount of code in Postscript,
but I'm not one of the people maintaining that.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From onurb at xiludom.gro  Fri Sep  1 05:24:58 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 11:24:58 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <ed8qj8$foe$1@news.lysator.liu.se>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<44f78549$0$11377$636a55ce@news.free.fr>
	<ed8qj8$foe$1@news.lysator.liu.se>
Message-ID: <44f7fc6b$0$26046$626a54ce@news.free.fr>

Joel Hedlund wrote:

<OT>
> Bruno >> Your email address seem to be wrong. 

let's say "disguised" !-)

> I tried to reply to you
> directly in order to avoid thread bloat but my mail bounced.

I don't think it's a good idea anyway - this thread is on topic here and
may be of interest to others too IMHO.

And while we're at it : please avoid top-posting.
<OT>


> Thanks for the quick reply though. I've skimmed through some docs on
> your suggestions and I'll be sure to read up on them properly later. But
> as I said to Robert Kern in this thread, this does not really seem
> resolve the
> problem of setting an approprate level of validation.

The "appropriate" level of validation depends on the context. There's
just no one-size-fits-all solution here. The only guideline I could come
with is too be parano?d about what comes from the outside world and
mostly confident about what comes from other parts of the application.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From timr at probo.com  Sat Sep  9 02:17:16 2006
From: timr at probo.com (Tim Roberts)
Date: Sat, 09 Sep 2006 06:17:16 GMT
Subject: Get CPU usage of a single process in Windows
References: <eds7bh$2h8o$1@news.uit.no>
Message-ID: <b2n4g21v31nps4lk6g12usdsd4ph72pa36@4ax.com>

Tor Erik <torerik81 at gmail.com> wrote:
>
>This should be possible as Taskmanager tracks CPU usage for every 
>process... Anyone know how this can be done?

I answered this in the python-win32 mailing list.  Task manager and perfmon
do this by using the performance counter APIs.  Python-Win32 includes an
interface for that (import win32pdh), but I've never used it.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From faulkner612 at comcast.net  Mon Sep 18 16:29:49 2006
From: faulkner612 at comcast.net (faulkner)
Date: 18 Sep 2006 13:29:49 -0700
Subject: How to find number of characters in a unicode string?
In-Reply-To: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
Message-ID: <1158611389.437088.44660@i3g2000cwc.googlegroups.com>

are you sure you're using unicode objects?
len(u'\uffff') == 1
the encodings module should help you turn '\xff\xff' into u'\uffff'.

Preben Randhol wrote:
> Hi
>
> If I use len() on a string containing unicode letters I get the number
> of bytes the string uses. This means that len() can report size 6 when
> the unicode string only contains 3 characters (that one would write by
> hand or see on the screen). Is there a way to calculate in characters
> and not in bytes to represent the characters.
>
> The reason for asking is that PyGTK needs number of characters to set
> the width of Entry widgets to a certain length, and it expects viewable
> characters and not number of bytes to represent them.
> 
> 
> Thanks in advance
> 
> 
> Preben



From steve at holdenweb.com  Wed Sep 13 15:15:59 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 15:15:59 -0400
Subject: page contents are not refreshed
In-Reply-To: <1158174404.950910.260050@b28g2000cwb.googlegroups.com>
References: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
	<1158174404.950910.260050@b28g2000cwb.googlegroups.com>
Message-ID: <ee9lc5$lic$1@sea.gmane.org>

waylan wrote:
> Gleb Rybkin wrote:
> 
>>when running apache, mod_python in windows.
>>
>>This looks pretty strange. Creating a simple python file that shows
>>current time will correctly display the time in apache the first time,
>>but freezes afterwards and shows the same time on all subsequent clicks
>>as long as the file is not modified.
>>
>>Any ideas what's wrong? Thanks.
> 
> 
> The first time the page was requested mod_python compiled and loaded
> your code. Every request after that mod_python refers to the already
> loaded code in memory in which your expression had already been
> evaluated the first time.
> 
> Therefore, you need to make curtime a 'callable object' so that it will
> be re-evaluated on each request. Unfortunelty, I don't recall if simply
> wraping your strftime() expression in a function will be enough or if
> its more complex that that. That said, I **think** this should work:
> 
>>from mod_python import apache
>>from time import strftime, gmtime
>>
> 
> def curtime():
>     return strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
> 
> 
>>def handler(req):
>>     req.content_type = "text/plain"
>>     req.send_http_header()
>>     req.write(str(curtime()))
>>     return apache.OK
> 
> 
This is a very long way round for a shortcut (though it does have the 
merit of working). Why not just

def handler(req):
      req.content_type = "text/plain"
      req.send_http_header()
      curtime = strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
      req.write(str(curtime))
      return apache.OK

Or even

def handler(req):
      req.content_type = "text/plain"
      req.send_http_header()
      req.write(strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime()))
      return apache.OK

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From gregpinero at gmail.com  Wed Sep 20 01:06:16 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Wed, 20 Sep 2006 01:06:16 -0400
Subject: How to get a Fix to an Abandoned Project?
In-Reply-To: <312cfe2b0609192121w436e649ayf3ce10fec066367c@mail.gmail.com>
References: <mailman.296.1158699367.10491.python-list@python.org>
	<1hlxp3x.1dtd1eug5y80N%rhymes@myself.com>
	<312cfe2b0609192121w436e649ayf3ce10fec066367c@mail.gmail.com>
Message-ID: <312cfe2b0609192206g204e8aeej20f337b6f0e87b6b@mail.gmail.com>

Say hello to pydelicious's new home ;-)
http://code.google.com/p/pydelicious/

-Greg


From nemesis at nowhere.invalid  Thu Sep 14 15:36:01 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Thu, 14 Sep 2006 19:36:01 GMT
Subject: [ANN] XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
Message-ID: <20060914193558.2234.50297.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Franz Steinhaeusler"
scriveva:

>>XPN (X Python Newsreader) is a multi-platform newsreader with Unicode
[...]
> Hello Nemesis,
> that is a great program, thank you.

Thanks.

> I will try to use it and also attempt to 
> customize it, so that it works like forte agent.
> <ironic>Even better would it be to have it in wxPython</ironic>

I disagree :-D

> Some little points:
>
> There is no progress bar or other info, if I subscribe one list.
> There is a little in the lower left corner, but if a lot of headers
> and bodies are received, the program seems to hang.
> I actually killed it, because I thought that hanging.

XPN is monothreaded, so when it is downloading the headers (it is a
monolotic job) the progress bar can't be updated.

> It would be nice, if I click on the groups pane another group, 
> the messages appear immediatly, without needing to double click the
> group.

You can configure this behaviour, in the Configure Window go to
"Misc"->"Miscellaneous" and you'll find two check buttons
One Click Enter Group
One Click Enter Article

> When composing messages, the tab size is 8. It would be nice to 
> have the possibility to adjust this size.

Hmm, it is a GTK default I don't know if I can change it, I'll check it.

-- 
I don't have a solution but I admire the problem.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From esj at harvee.org  Fri Sep 29 13:53:46 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 13:53:46 -0400
Subject: another distutils question
Message-ID: <efjmjp$mr2$1@sea.gmane.org>

is there anyway I can, in a setup.py file, set  and internal equivalent 
to the '--install-scripts' commandline option?

script installation directory but I don't want on the command line where 
things can go horribly wrong if the user forgets.  I would like to 
create a new default setting  for this commandline option as well as a 
couple of other such as the data default directory.

--- eric



From chris.cavalaria at free.fr  Fri Sep 15 06:35:04 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Fri, 15 Sep 2006 12:35:04 +0200
Subject: add without carry
In-Reply-To: <450a7e5c$0$14661$626a54ce@news.free.fr>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
	<450a7e5c$0$14661$626a54ce@news.free.fr>
Message-ID: <450a81be$0$31676$626a54ce@news.free.fr>

Bruno Desthuilliers a ?crit :
> Bryan Olson wrote:
>> Hugh wrote:
>>> Sorry, here's an example...
>>>
>>> 5+7=12
>>>
>>> added without carrying, 5+7=2
>>>
>>> i.e the result is always less than 10
>> Are you looking for bitwise exclusive or? In Python it's
>> the '^' operator. For example:
>>
>>     print 5 ^ 7
>>
>>
>>>> 10 ^ 21
> 31
> 
> Not really "less than 10"...

But you must use numbers smaller than 10 as input! Still :

 >>> 8 ^ 2
10

:D



From robin at NOSPAMreportlab.com  Fri Sep 29 04:04:25 2006
From: robin at NOSPAMreportlab.com (Robin Becker)
Date: Fri, 29 Sep 2006 08:04:25 +0000
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
Message-ID: <451CD389.3010800@jessikat.plus.net>

Larry Hastings wrote:
______
> THE PATCH
> 
> The core concept: adding two strings together no longer returns a pure
> "string" object.  Instead, it returns a "string concatenation" object
> which holds references to the two strings but does not actually
> concatenate
> them... yet.  The strings are concatenated only when someone requests
> the
> string's value, at which point it allocates all the space it needs and
> renders the concatenated string all at once.
> 
> More to the point, if you add multiple strings together (a + b + c),
> it *doesn't* compute the intermediate strings (a + b).
> 
> Upsides to this approach:
........

wouldn't this approach apply to other additions eg list+list seq+seq etc 
etc.

I suppose the utility of such an approach depends on the frequency with 
which multiple strings/lists/sequences etc are added together in real code.
-- 
Robin Becker


From nogradi at gmail.com  Mon Sep  4 17:52:15 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Mon, 4 Sep 2006 23:52:15 +0200
Subject: [ANN] markup.py 1.5 - a lightweight HTML/XML generator
Message-ID: <5f56302b0609041452w7eec63d8o26a1b478b94c8274@mail.gmail.com>

A new release of markup.py is available at

http://markup.sourceforge.net/

The markup module is an intuitive, lightweight, easy-to-use,
customizable and pythonic HTML/XML generator. New features in the 1.5
release include:

 * use attribute=None to have no value for an attribute
   such as the emptyattr in <option attr='value' emptyattr>

 * new separator keyword to constructor of class page

 * new bodyattrs keyword to init( ) method of class page

 * oneliner object added that returns an element as a
   string so there is no need to instantiate a page class
   and this also allows for nesting


Here I would like to thank all users especially those who sent bug
reports, comments, remarks, etc., I was in fact surprised by the large
amount of feedback I got this makes the developement much more fun.

Cheers,
Daniel


From deets at nospam.web.de  Sat Sep 23 09:24:56 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 23 Sep 2006 15:24:56 +0200
Subject: Python and checked exceptions
References: <1159009493.872015.33880@d34g2000cwd.googlegroups.com>
	<ef37l4$5hj$2@lust.ihug.co.nz>
Message-ID: <4nkqt8Fapv02U1@uni-berlin.de>


>> This might be of practical interest for some and theoretical interest
>> for others - in particular those who know checked ex as a language
>> feature of Java.
> 
> The trouble with having to declare every possible exception that a
> function might throw is that it rapidly turns into a complete mess. That's
> why such declarations are optional in C++, and only semi-mandatory in
> Java.

I agree with you that they are a mess, and I usually wrap them
RuntimeExceptions.

Why do you call them semi-mandatory?

diez


From robert.kern at gmail.com  Sun Sep 24 16:12:33 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 24 Sep 2006 15:12:33 -0500
Subject: Automatic import PEP
In-Reply-To: <ef5lmn$h1k$3@lust.ihug.co.nz>
References: <mailman.491.1158981359.10491.python-list@python.org>
	<ef5lmn$h1k$3@lust.ihug.co.nz>
Message-ID: <ef6orc$kvn$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.491.1158981359.10491.python-list at python.org>, Connelly
> Barnes wrote:
> 
>> The main point of autoimp is to make usage of the interactive Python
>> prompt more productive by including "from autoimp import *" in the
>> PYTHONSTARTUP file.
> 
> The main problem I have with your idea is that any kind of import statement
> with wildcards in it automatically starts my bogosity meter flashing
> its "RED ALERT" sign and clanging all its alarm bells.

"from ... import *" was *designed* for interactive use, which is exactly what 
Connelly is suggesting. It's not a bad thing in that context.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From tim at tdw.net  Tue Sep  5 19:05:43 2006
From: tim at tdw.net (Tim Williams)
Date: Wed, 6 Sep 2006 00:05:43 +0100
Subject: Removing from a List in Place
In-Reply-To: <G51595154.188.5082.1@mx-extra>
References: <B51587638.196.5201.1@mx-extra>
	<9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>
	<9afea2ac0609051409q6a083503sc2003669d0885c3f@mail.gmail.com>
	<G51595154.188.5082.1@mx-extra>
Message-ID: <9afea2ac0609051605s2a62229ax86c8c0f5155937a8@mail.gmail.com>

On 05/09/06, Gregory Pi?ero <gregpinero at gmail.com> wrote:
> On 9/5/06, Tim Williams <tim at tdw.net> wrote:
> > > It does already,  you just haven't grasped list fully yet :):)
> > >
> > > when you remove 2 from alist,  the list becomes length 2, there is no
> > > longer a 3rd item in the list to iterate over.
> > >
> > > Try this
> > >
> > > > >>> alist=[1 ,2 ,3, 4]
> > > > >>> for item in alist:
> > > > ....    print item
> > > > ....    if item==2:
> > > > ....            alist.remove(item)
> > > > ....    print alist
> > >
> >
> > sorry,  I meant to offer an alternative also
> >
> > in yourgiven case you can iterate over a copy of the list like this:
> >
> > >>> for item in alist[:] :
> >
>
> Thanks Tim.  I suppose that does make sense.  Iterating over a copy is
> a good alternative.
>

You could also use a list comprehension for your case

>>> alist = [1 ,2 ,3]
>>> alist = [x for x in alist if x != 2]
>>> alist
[1, 3]
>>>

:)


From steve at REMOVE.THIS.cybersource.com.au  Sun Sep 24 01:48:22 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Sun, 24 Sep 2006 15:48:22 +1000
Subject: Difficulty with maxsplit default value for str.split
Message-ID: <pan.2006.09.24.05.48.22.103431@REMOVE.THIS.cybersource.com.au>

I'm having problems passing a default value to the maxsplit argument of
str.split. I'm trying to write a function which acts as a wrapper to
split, something like this:

def mysplit(S, sep=None, maxsplit=None):
    pre_processing()
    result = S.split(sep, maxsplit)
    post_processing()
    return result

But the split method doesn't accept a value of None for maxsplit, and I
don't know what default value I should be using. Passing 0 as the default
isn't correct, because then it splits zero times.

By experimentation, I have discovered that passing -1 as the default
instead of None *appears* to work, but I'm not sure if I can rely on it or
if that is an accidental implementation detail. According to the
documentation at
http://docs.python.org/lib/string-methods.html#string-methods

split([sep [,maxsplit]])
    Return a list of the words in the string, using sep as the delimiter
    string. If maxsplit is given, at most maxsplit splits are done. (thus,
    the list will have at most maxsplit+1 elements). If maxsplit is not
    specified, then there is no limit on the number of splits (all
    possible splits are made).


If I take that literally, then the correct way to wrap split is something
like this:

def mysplit(S, sep=None, maxsplit=None):
    pre_processing()
    if maxsplit is None:
        # don't specify maxsplit
        result = S.split(sep)
    else:
        result = S.split(sep, maxsplit)
    post_processing()
    return result

Is it safe for me to pass -1 as the default to maxsplit, meaning
"unlimited splits"? Should the docs be fixed to mention that?

Thanks,



-- 
Steven.



From robert.kern at gmail.com  Sat Sep 23 02:04:58 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 01:04:58 -0500
Subject: Application logging to screen and file - any favorite modules
	(no   luck on cheeseshop)
In-Reply-To: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
References: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
Message-ID: <ef2iq6$m6e$1@sea.gmane.org>

metaperl wrote:
> Hello, I am looking for a module which has
> * log levels
> * output to stdout and file (either/or based on config)
> * nicely formatted log output (e.g., indentation when appropriate)
> 
> I tried to use cheeseshop to find such a module, but came up short. I
> clicked on
> Browse Tree -> Software Development but then did not see a subcategory
> for logging, so did not know where to look. I then typed log into the
> search box, but that didn't really turn up the modules which had login
> their description so I posted here.

You should look in the standard library before hitting the Package Index.

http://www.python.org/doc/current/lib/module-logging.html

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From g.brandl-nospam at gmx.net  Thu Sep 28 08:40:00 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 28 Sep 2006 14:40:00 +0200
Subject: Continuing after error
In-Reply-To: <1159447044.885212.300950@i3g2000cwc.googlegroups.com>
References: <1159447044.885212.300950@i3g2000cwc.googlegroups.com>
Message-ID: <efgfr2$lag$1@news.albasani.net>

Sheldon wrote:
> Hi,
> 
> Does anyone know if it is possible to resume the execution of a program
> after it stops at an error in the code and the error was corrected?

try:
     do something
except SomeException:
     correct the error

do something else

i.e. you handle the error in the except clause. If that's successful, your
program will continue normally.

Georg


From g.brandl-nospam at gmx.net  Tue Sep 19 02:22:41 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 19 Sep 2006 08:22:41 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <450db942$0$75035$14726298@news.sunsite.dk>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
Message-ID: <eeo2bh$q6$1@news.albasani.net>

Damjan wrote:
>>> I understand that I can use __metaclass__ to create a class which
>>> modifies the behaviour of another class.
>>> 
>>> How can I add this metaclass to *all* classes in the system?
>>> 
>>> (In ruby I would alter the "Class" class)
>> 
>> You'd have to set
>> 
>> __metaclass__ = whatever
>> 
>> at the top of each module whose classes are to get the new behavior.
> 
> I think '__metaclass__ = whatever' affects only the creation of classes that
> would otherwise be old-style classes?

Wrong.

If you set __metaclass__ = type, every class in that module will be new-style.

If you set __metaclass__ = MyClass, and MyClass inherits from <type>, every
class in that module will be new-style and have MyClass as a metaclass.

The usual way to create new-style classes, inheriting from object or another
new-style class, works because if no __metaclass__ is defined, the first
base class's class is taken as the metaclass.

Georg


From p.lavarre at ieee.org  Fri Sep 22 18:19:22 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 22 Sep 2006 15:19:22 -0700
Subject: shlex.split != shlex.shlex get_token til eof
References: <1158949149.537922.272920@h48g2000cwc.googlegroups.com>
Message-ID: <1158963562.701766.283150@d34g2000cwd.googlegroups.com>

> shlex.split gives me what I want ...
> every doc'ed instantiation of shlex.shlex ... gives me something else ...

Aye, the discrepancies are gross & legion - presumably astonishing only
newbies like me.

Here's a more dramatic example:

>>> import shlex
>>> shlex.split("//./PhysicalDrive9 //./Cdrom9 //./Tape9 //./A:")[0]
'//./PhysicalDrive9'
>>> shlex.shlex("//./PhysicalDrive9 //./Cdrom9 //./Tape9 //./A:", "", True).get_token()
'/'
>>>



From deets at nospam.web.de  Fri Sep  8 13:22:14 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 08 Sep 2006 19:22:14 +0200
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
Message-ID: <4mdn66F5m7v2U1@uni-berlin.de>

vbfoobar at gmail.com schrieb:
> Hello
> 
> I am looking for python code that takes as input a list of strings
> (most similar,
> but not necessarily, and rather short: say not longer than 50 chars)
> and that computes and outputs the python regular expression that
> matches
> these string values (not necessarily strictly, perhaps the code is able
> to determine
> patterns, i.e. families of strings...).

For matching the exact set, of course a concatenation can be used. 
However, this is of limited use, because then simple string find will 
suffice.

In general, this can't be done. It might be possible that the underlying 
structure of the language isn't regular at all - for example, the simple 
language of palindromes isn't.

And even if it was - the search space is just to large to explore. You 
could generate a bazillion matching expressions, but .* will always 
match - so how do you prevent the generator from converging towards that?

If all you have are those strings, you are better off trying to infer 
some structure yourself.

Diez


From jakubadamek at gmail.com  Sun Sep 24 16:59:18 2006
From: jakubadamek at gmail.com (jakubadamek@seznam.cz)
Date: 24 Sep 2006 13:59:18 -0700
Subject: SQL reports like in MS Access
Message-ID: <1159131558.050709.13180@h48g2000cwc.googlegroups.com>

Hi, what is the best unit for creating reports like in Microsoft
Access, i.e. with page header / footer, grouping, group headers /
footers etc., with Wysiwyg editor?

Thanks a lot, Jakub



From st at tobiah.org  Thu Sep 14 18:15:52 2006
From: st at tobiah.org (tobiah)
Date: Thu, 14 Sep 2006 15:15:52 -0700
Subject: Specify string with uniform indentation ignored
In-Reply-To: <1158271883.710830.83360@k70g2000cwa.googlegroups.com>
References: <4509b7df$0$19672$88260bb3@free.teranews.com>
	<1158271883.710830.83360@k70g2000cwa.googlegroups.com>
Message-ID: <4509c785$0$19715$88260bb3@free.teranews.com>

That would be it.  Thanks.

>> Is there a built in way to do this?  I don't much
>> care for:
>>
>> 	string = "function otherlang(){"
>> 	string += "	doit()"
>> 	string += "}"
> 
> textwrap.dedent ought to do exactly what you want.
> 
> --Sam
> 

-- 
Posted via a free Usenet account from http://www.teranews.com



From fredrik at pythonware.com  Wed Sep 20 08:13:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 20 Sep 2006 14:13:33 +0200
Subject: How to measure memory footprint of Python objects?
In-Reply-To: <469735C9CA632F45B1A3E20035C60EEE040D902E@gh-exch1.eu.scansoft.com>
References: <469735C9CA632F45B1A3E20035C60EEE040D902E@gh-exch1.eu.scansoft.com>
Message-ID: <eerb9e$83h$1@sea.gmane.org>

Neagu, Adrian wrote:

> I have a python program that takes a lot of memory (>hundred Mb).

> I can see the total process size of the Python process (Task manager on MS
> Win or Unix "ps" command) but that is not precise enough for me

I'm not sure those two statements are compatible, though.

if your program is using hundreds of megabytes, surely kilobyte 
precision should be good enough for you ?

</F>



From nogradi at gmail.com  Sat Sep 30 17:30:21 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 30 Sep 2006 23:30:21 +0200
Subject: loop over list and modify in place
In-Reply-To: <1159650480.454796.259190@i3g2000cwc.googlegroups.com>
References: <mailman.1006.1159638327.10491.python-list@python.org>
	<1vzTg.7077$GR.670@newssvr29.news.prodigy.net>
	<1159650480.454796.259190@i3g2000cwc.googlegroups.com>
Message-ID: <5f56302b0609301430x4054b7bai9b013fedd8b617de@mail.gmail.com>

> Call me crazy, but isn't the simple construct
>     for obj in mylist:
>         obj.newattribute = 'new value'
> what the OP was looking for?

Yes, of course. That's why my follow-up post was this:

> Please consider the previous question as an arbitrary random brain
> cell fluctuation whose probability of occurence is around once per
> month and before sending the question it hasn't yet happened to me in
> September.

:)


From jjl at pobox.com  Wed Sep 27 15:06:07 2006
From: jjl at pobox.com (John J. Lee)
Date: 27 Sep 2006 20:06:07 +0100
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <uodt1165c.fsf@pobox.com>

Yes.


John



From bmearns at coe.neu.edu  Thu Sep 14 10:02:22 2006
From: bmearns at coe.neu.edu (bmearns)
Date: 14 Sep 2006 07:02:22 -0700
Subject: Outbound port on sockets
In-Reply-To: <1158238828.558194.91830@h48g2000cwc.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158238828.558194.91830@h48g2000cwc.googlegroups.com>
Message-ID: <1158242542.478698.162760@e3g2000cwe.googlegroups.com>

It's actually 256*y + z
billie wrote:
> > The right format of a FTP PORT command is:
> >
> > PORT x,x,x,x,y,z
> >
> > ...where x(s) represents your IP address in dotted form and (x * y) the
> > TCP port you bind.
> 
> Sorry, I wanted to say: (y * z)



From robert.kern at gmail.com  Fri Sep 22 13:58:42 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 22 Sep 2006 12:58:42 -0500
Subject: Building things with setup.py
In-Reply-To: <c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>	<mailman.438.1158898433.10491.python-list@python.org>
	<c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>
Message-ID: <ef188e$7ii$1@sea.gmane.org>

James Stroud wrote:
> Robert Kern wrote:
>> James Stroud wrote:

>>> The build process, by the way, required my copying libpython2.5.a to 
>>> $HOME/Programs/lib.
>> Hmm. That doesn't quite sound right, but it's been a while since I 
>> compiled the interpreter from source.
> 
> Sorry. To clarify, making libpython2.5a available in a $LD_LIBRARY_PATH 
> was necessary to build numpy and scipy.

I don't see how that could have affected anything. Static libraries aren't 
looked up in $LD_LIBRARY_PATH. Certainly not for build-time linking.

> I'm not sure if this is relevant to what you see in the check, but I 
> installed scipy_distutils AFTER installing scipy.

scipy_distutils is no longer used. All of its functionality has been folded into 
numpy.

What do your environment variables look like when you build?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From p.lavarre at ieee.org  Thu Sep 28 15:06:27 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 28 Sep 2006 12:06:27 -0700
Subject: Python CTypes translation of (pv != NULL)
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>
	<mailman.755.1159316054.10491.python-list@python.org>
	<1159375238.173590.187840@e3g2000cwe.googlegroups.com>
	<mailman.855.1159418137.10491.python-list@python.org>
Message-ID: <1159470387.093810.284170@k70g2000cwa.googlegroups.com>

> Where did you find that?

Quoted in full from the gift:

Subject: Re: Python CTypes translation of (pv != NULL)
Date: Tue, 26 Sep 2006 11:48:52 +0200
Message-ID: <mailman.654.1159264176.10491.python-list at python.org>
http://groups.google.com/group/comp.lang.python/msg/f9f13e731ea3cad7

Cached and pondered just slightly before the gift of a complete
disavowal came after:

Subject: Re: Python CTypes translation of (pv != NULL)
Date: Wed, 27 Sep 2006 20:22:47 +0200
Message-ID: <mailman.823.1159381408.10491.python-list at python.org>
http://groups.google.com/group/comp.lang.python/msg/6584d964a70b7a2d



From michele.simionato at gmail.com  Mon Sep 25 06:26:28 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 25 Sep 2006 03:26:28 -0700
Subject: how to remember login in zope?
In-Reply-To: <1158996747.919222.312610@h48g2000cwc.googlegroups.com>
References: <1158996747.919222.312610@h48g2000cwc.googlegroups.com>
Message-ID: <1159179988.735427.277740@h48g2000cwc.googlegroups.com>

astarocean wrote:
> how to remember login in zope?
> so when user came back , they needn't input username and password
> again.
>
> i'm using zope,extensiveuserfolder and cookiecrumbler,
> exuserfolder is set to cookie-based authentication.
>
> i'm not using cmf or plone , how could i handle this?
> thanks a lot.
>
> i'm working around this for two days and surfing a lot of pages but
> still felt confused, any suggestion would be appreciated.

This is the wrong list. See http://www.zope.org/Resources/MailingLists

        Michele Simionato



From adamm_at_ at blic_dot_.net  Wed Sep 27 13:59:03 2006
From: adamm_at_ at blic_dot_.net (Mladen Adamovic)
Date: Wed, 27 Sep 2006 19:59:03 +0200
Subject: Computer Language Popularity Trend
In-Reply-To: <1159375876.352551.22600@m7g2000cwm.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159359326.496431.293370@i3g2000cwc.googlegroups.com>
	<1159375876.352551.22600@m7g2000cwm.googlegroups.com>
Message-ID: <efee4p$50r$1@ariane.blic.net>

There is one index at : http://www.tiobe.com/tpci.htm

It isn't much reliable, put still I think it is a bit reliable.

Also, you might use number of open source projects at Sourceforge for 
the given language for giving assumptions, or number of job openings at 
Monster, i.e.




-- 
Mladen Adamovic
http://www.online-utility.org
http://www.cheapvps.info
http://www.vpsreview.com




From greg.kujawa at gmail.com  Sat Sep 30 01:50:27 2006
From: greg.kujawa at gmail.com (gregarican)
Date: 29 Sep 2006 22:50:27 -0700
Subject: Python/UNO/OpenOffice?
In-Reply-To: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
References: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
Message-ID: <1159595427.887705.253870@h48g2000cwc.googlegroups.com>

Just because the last code update was a little over a year ago doesn't
mean the UNO project is dead. If the OpenOffice API has remained
basically the same since UNO was last updated and the Python wrappers
are relatively comprehensive then it should fit the bill. Googling
around the UNO project was the only thing I found off-hand as well...

kenneth.m.mcdonald at sbcglobal.net wrote:
> Are then any currently active and reasonably mature Python plugins/
> apis/whatever for programming/scripting OpenOffice? The page I've
> found is http://udk.openoffice.org/python/python-bridge.html, but
> it was last updated more than a year ago.
> 
> Thanks,
> Ken



From tony.bedford at gmail.com  Tue Sep 26 06:15:19 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 03:15:19 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <mailman.658.1159265280.10491.python-list@python.org>
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
	<mailman.658.1159265280.10491.python-list@python.org>
Message-ID: <1159265719.407242.172450@k70g2000cwa.googlegroups.com>

Thanks for that Fredrik, that's clear. That's actually a pretty nice
feature as it's nicely optimised.

>>> a = 10
>>> c = 10
>>> a is c
True
>>> c = c +1
>>> a is c
False
>>> 

Cheers,
Tony



From ptmcg at austin.rr._bogus_.com  Tue Sep 26 14:09:23 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Tue, 26 Sep 2006 18:09:23 GMT
Subject: Logfile analysing with pyparsing
References: <efadbv$gq7$1@online.de>
Message-ID: <n1eSg.131$DU3.29@tornado.texas.rr.com>

"Andi Clemens" <andi.clemens at gmx.net> wrote in message 
news:efadbv$gq7$1 at online.de...
> Hi,
>
> we had some problems in the last weeks with our mailserver.
> Some messages were not delivered and we wanted to know why.
> But looking through the logfile is a time consuming process.
> So I wanted to write a parser to analyse the logs and parse them as XML.
>
<snip>

Andi -

Well, pyparsing does have *some* XML connection, but I don't think it will 
be as direct as you might like.  I have attached below a pyparsing program 
that will probably parse 90% of your log messages, and give you some pretty 
easy-to-access data fields which you can then use to create your own Python 
data structures, such as dict keyed by queue id, dict keyed by message-id, 
etc., and then navigate through them to generate your XML.

-- Paul

logdata = """\
Sep 18 04:15:22 mailrelay postfix/cleanup[12103]: 755387301: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:22 mailrelay spamd[1364]: spamd: processing message 
<200609180214.k8I2EuNo016264 at mforward2.dtag.de> for nobody:65534
Sep 18 04:15:25 mailrelay spamd[1364]: spamd: result: Y 15 - 
BAYES_99,DATE_IN_PAST_03_06,DNS_FROM_RFC_ABUSE,DNS_FROM_RFC_DSN,DNS_FROM_RFC_POST,DNS_FROM_RFC_WHOIS,FORGED_MUA_OUTLOOK,SPF_SOFTFAIL 
scantime=3.1,size=8086,user=nobody,uid=65534,required_score=5.0,rhost=localhost,raddr=127.0.0.1,rport=55277,mid=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>,bayes=1,autolearn=no
Sep 18 04:15:25 mailrelay postfix/cleanup[12074]: DA1431965E: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:26 mailrelay postfix/cleanup[13057]: EF90720AD: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:26 mailrelay postfix/smtp[10879]: EF90720AD: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=10.49.0.7[10.49.0.7], 
delay=1, status=sent (250 2.6.0 
<200609180214.k8I2EuNo016264 at mforward2.dtag.de> Queued mail for delivery)

Sep 18 02:15:11 mailrelay postfix/smtpd[10841]: 755387301: 
client=unknown[194.25.242.123]
Sep 18 04:15:22 mailrelay postfix/cleanup[12103]: 755387301: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:22 mailrelay postfix/qmgr[11082]: 755387301: 
from=<sender at mail.net.mx>, size=8152, nrcpt=7 (queue active)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver1 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver2 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver3 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver4 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/qmgr[11082]: 755387301: removed

Sep 18 04:15:25 mailrelay postfix/pickup[13175]: DA1431965E: uid=65534 
from=<nobody>
Sep 18 04:15:25 mailrelay postfix/cleanup[12074]: DA1431965E: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:25 mailrelay postfix/qmgr[11082]: DA1431965E: 
from=<nobody at OUR-MAILSERVER.mail.com>, size=11074, nrcpt=1 (queue active)
Sep 18 04:15:26 mailrelay postfix/smtp[11703]: DA1431965E: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=localhost[127.0.0.1], 
delay=1, status=sent (250 Ok: queued as EF90720AD)
Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: DA1431965E: removed

Sep 18 04:15:25 mailrelay postfix/smtpd[11704]: EF90720AD: 
client=localhost[127.0.0.1]
Sep 18 04:15:26 mailrelay postfix/cleanup[13057]: EF90720AD: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:26 mailrelay postfix/smtp[11703]: DA1431965E: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=localhost[127.0.0.1], 
delay=1, status=sent (250 Ok: queued as EF90720AD)
Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: EF90720AD: 
from=<nobody at OUR-MAILSERVER.mail.com>, size=11263, nrcpt=1 (queue active)
Sep 18 04:15:26 mailrelay postfix/smtp[10879]: EF90720AD: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=10.49.0.7[10.49.0.7], 
delay=1, status=sent (250 2.6.0 
<200609180214.k8I2EuNo016264 at mforward2.dtag.de> Queued mail for delivery)
Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: EF90720AD: removed
""".split('\n')

from pyparsing import *

month = oneOf("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec")
dayOfMonth = Word(nums,max=2)
timeOfDay = Combine(Word(nums,exact=2)+":"+
                Word(nums,exact=2)+":"+Word(nums,exact=2))
timeStamp = month + dayOfMonth + timeOfDay
# may need to expand this if log contains other entries in this field
source = Literal("mailrelay")
emailAddr = QuotedString("<",endQuoteChar=">")
ipAddr = Combine(Word(nums)+"."+Word(nums)+"."+\
                Word(nums)+"."+Word(nums))
ipRef = ( "localhost" | ipAddr ) + "[" + ipAddr + "]"

command = Combine(Word(alphas) + Optional("/" + Word(alphas)))
pid = "[" + Word(nums) + "]"
queueId = Word(hexnums)
integer = Word(nums)
msgValue = ( integer | emailAddr | ipRef | Word(alphas) ) + \
            Optional( QuotedString("(",endQuoteChar=")") )
nvList = Dict(delimitedList( Group( Word(alphas+"-") +
                                        Suppress("=") + msgValue ) ))
msgBody = "removed" | nvList
spamdMsg = "spamd:" + restOfLine
regularMsg = queueId.setResultsName("queueId") + ":" + \
            msgBody.setResultsName("body")
logMessage = timeStamp + source + command.setResultsName("command") +\
            pid.setResultsName("pid") + ":" + (spamdMsg | regularMsg)

# parse each line in log
for log in logdata:
    if log:
        results = logMessage.parseString(log)
        print results.dump()
        for fieldName in "message-id queueId from to".split():
            print fieldName,":",
            try:
                print results[fieldName]
            except KeyError,ke:
                print


Prints out (excerpt):
- body: ['message-id', '200609180214.k8I2EuNo016264 at mforward2.dtag.de']
- command: postfix/cleanup
- message-id: 200609180214.k8I2EuNo016264 at mforward2.dtag.de
- pid: ['[', '13057', ']']
- queueId: EF90720AD
['Sep', '18', '04:15:26', 'mailrelay', 'postfix/cleanup', '[', '13057', ']', 
':', 'EF90720AD', ':', ['message-id', 
'200609180214.k8I2EuNo016264 at mforward2.dtag.de']]
message-id : 200609180214.k8I2EuNo016264 at mforward2.dtag.de
queueId : EF90720AD
from :
to :
- body: ['to', 'SPAM-FOUND at OUR-MAILSERVER.mail.com']
- command: postfix/smtp
- pid: ['[', '10879', ']']
- queueId: EF90720AD
- relay: 10
- to: SPAM-FOUND at OUR-MAILSERVER.mail.com
['Sep', '18', '04:15:26', 'mailrelay', 'postfix/smtp', '[', '10879', ']', 
':', 'EF90720AD', ':', ['to', 'SPAM-FOUND at OUR-MAILSERVER.mail.com'], 
['relay', '10']]
message-id :
queueId : EF90720AD
from :
to : SPAM-FOUND at OUR-MAILSERVER.mail.com
- body: ['client', 'unknown']
- client: unknown
- command: postfix/smtpd
- pid: ['[', '10841', ']']
- queueId: 755387301
['Sep', '18', '02:15:11', 'mailrelay', 'postfix/smtpd', '[', '10841', ']', 
':', '755387301', ':', ['client', 'unknown']]
message-id :
queueId : 755387301
from :
to :
- body: ['message-id', '200609180214.k8I2EuNo016264 at mforward2.dtag.de']
- command: postfix/cleanup
- message-id: 200609180214.k8I2EuNo016264 at mforward2.dtag.de
- pid: ['[', '12103', ']']
- queueId: 755387301
['Sep', '18', '04:15:22', 'mailrelay', 'postfix/cleanup', '[', '12103', ']', 
':', '755387301', ':', ['message-id', 
'200609180214.k8I2EuNo016264 at mforward2.dtag.de']]
message-id : 200609180214.k8I2EuNo016264 at mforward2.dtag.de
queueId : 755387301
from :
to :
- body: ['from', 'sender at mail.net.mx']
- command: postfix/qmgr
- from: sender at mail.net.mx
- nrcpt: ['7', 'queue active']
- pid: ['[', '11082', ']']
- queueId: 755387301
- size: 8152
['Sep', '18', '04:15:22', 'mailrelay', 'postfix/qmgr', '[', '11082', ']', 
':', '755387301', ':', ['from', 'sender at mail.net.mx'], ['size', '8152'], 
['nrcpt', '7', 'queue active']]
message-id :
queueId : 755387301
from : sender at mail.net.mx
to : 




From n.estner at gmx.de  Fri Sep 22 13:23:59 2006
From: n.estner at gmx.de (nikie)
Date: 22 Sep 2006 10:23:59 -0700
Subject: py2exe compression not working with Python 2.5
Message-ID: <1158945839.871351.39780@k70g2000cwa.googlegroups.com>

When I try to compress the output of py2exe like this:

  from distutils.core import setup
  import py2exe

  setup(console=['hello.py'], options={"py2exe": {"compressed": 1}})

I get strange error messages:

Adding zlib.pyd to C:\tests\CanControllerTest\New Folder
(2)\dist\library.zip
Traceback (most recent call last):
  File "setup.py", line 4, in <module>
    setup(console=['hello.py'], options={"py2exe": {"compressed": 1}})
  File "C:\Python25\lib\distutils\core.py", line 151, in setup
    dist.run_commands()
  File "C:\Python25\lib\distutils\dist.py", line 974, in run_commands
    self.run_command(cmd)
  File "C:\Python25\lib\distutils\dist.py", line 994, in run_command
    cmd_obj.run()
  File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 218,
in run
    self._run()
  File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 285,
in _run
    self.create_binaries(py_files, extensions, dlls)
  File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 591,
in create_
binaries
    bytes = zlib_file.read()
AttributeError: 'NoneType' object has no attribute 'read'

This is a standard Python 2.5 installation. Doing the same thing with
2.4 works like a charm.

Did I miss anything?



From wenshengwang at gmail.com  Mon Sep 11 11:15:40 2006
From: wenshengwang at gmail.com (Wensheng)
Date: 11 Sep 2006 08:15:40 -0700
Subject: egg and modpython
In-Reply-To: <1157969582.029638.136340@i42g2000cwa.googlegroups.com>
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
	<1157969582.029638.136340@i42g2000cwa.googlegroups.com>
Message-ID: <1157987740.805599.96900@p79g2000cwp.googlegroups.com>


Paul Boddie wrote:
> Bruno Desthuilliers wrote:
> > Wensheng a ?crit :
> > > I installed pysqlite2 using easy_install.
> > > and got this when using it from modpython:
> > > --------------------------------------------------------------------------------------------------
> > > Mod_python error: "PythonHandler etc.modpython"
>
> [...]
>
> I applaud you for studying the traceback in more depth than I can find
> the motivation for, Bruno. ;-) However, this looks like a program using
> some package installed by setuptools/easy_install needs to unpack that
> package when running.
>
> > > ExtractionError: Can't extract file(s) to egg cache
> >
> > > The following error occurred while trying to extract file(s) to the
> > > Python egg cache:
> >
> > >   [Errno 13] Permission denied: '/var/www/.python-eggs'
>
> And this wants to happen apparently in the home directory of the Web
> server user, whose rights may be somewhat limited. Or perhaps one has
> to initialise setuptools for any particular user by running it first as
> that user: something that isn't a particularly common thing to do with
> non-interactive users on UNIX-like systems.
>
> [...]
>
> > > Can peak developers fix this please?
> >
> > Why should they "fix" something that's
> > 1/ documented
> >     -> http://peak.telecommunity.com/DevCenter/EggFormats#zip-file-issues
>
> "The Internal Structure of Python Eggs / STOP! This is not the first
> document you should read!" A case of "Beware of the Leopard" perhaps?
>
> > 2/ not a an egg specific issue
>
> In my experience, most other package managers actually unpack their
> resources when invoked, rather than leaving the programs to attempt
> such things when running. Debian packages even compile the bytecode
> files to ensure that nothing tries (and fails) to write them to
> privileged locations afterwards.
>
> > 3/ really just a configuration/permission problem
>
> Which should have been solved when the package manager was invoked,
> especially since this was most likely done as root.
>
> [...]
>
> > > in the mean time, I just have to use old "download, unzip/untar &&
> > > python setup.py install" way.
> >
> > No - you have to read the manual and fix you configuration. FWIW, the
> > above traceback gives far enough clues (it's even written in all letters).
>
> The various ways to deal with this include running easy_install as the
> Web server user so that it can touch the directory and whatever else it
> needs, and perhaps to set up various permissions - something you
> wouldn't usually do; running easy_install with the --always-unzip flag
> when installing the package as root; using python setup.py install as
> usual.
>
> This situation looks either a lot like a use case whose popularity has
> been underestimated by the developers - intriguing given the number of
> people supposedly using setuptools for their Web application
> deployments - or a packaging mistake with the pysqlite2 .egg file.
> Either way, system packages rarely suffer from this kind of problem,
> and it's quite understandable (and justifiable) to consider this bad
> behaviour.
>
> > Or you may read easy_install's doc to avoid installing zipped eggs:
> > http://peak.telecommunity.com/DevCenter/EasyInstall#compressed-installation
>
> Perhaps the developers should reverse their defaults and emulate the
> usual behaviour of package managers, unfashionable as that may seem.
>
> Paul

Thank you for clarification and other info/sugguestions.

As I read the document, if package author set "zip_safe = false" in
their setup.py, there would be no such problem.

I also second the idea of making "--always-unzip" the default.

It's EASY_install and EZ_setup, should be EASY so that we don't have to
read the document:), right?

If it's turbogears, yes, I would definitely read the document, but a
package manager...



From dale at riverhall.nospam.co.uk  Wed Sep 13 19:50:55 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Thu, 14 Sep 2006 00:50:55 +0100
Subject: Delete items in nested dictionary based on value.
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
Message-ID: <AP0Og.82$_Z1.30@fe32.usenetserver.com>

Brian L. Troutwine wrote:

> I've got a problem that I can't seem to get my head around and hoped
> somebody might help me out a bit:
> 
> I've got a dictionary, A, that is arbitarily large and may contains
> ints, None and more dictionaries which themselves may contain ints,
> None and more dictionaries. Each of the sub-dictionaries is also
> arbitrarily large. When pretty printing A, in the context I'm using A
> for, it's rather helpful to remove all key:value pairs where value is
> None. So I'd like to be able to define a function dict_sweep to recurse
> through A and del all the keys with None as a value.
> 
> I feel like the solution is right on the tip of my tounge, so to speak,
> but I just can't quite get it. Anyway, here's the best I've come up
> with:

How about this:

def dict_sweep(dictionary):
        for k, v in dictionary.items():
                if v is None:
                        del dictionary[k]
                if type(v) == type({}):
                        dict_sweep(v)
                        #if len(v) == 0:
                        #       del dictionary[k]


A_in = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}

B_in = {1: {1: {1: None, 2: {1: None}}, 2: 2, 3: None}}

dict_sweep(A_in)
dict_sweep(B_in)
print A_in
print B_in

>>> {1: {2: 2, 3: {2: 2}}, 2: 2}
>>> {1: {2: 2}}


It doesn't produce the output you expect for B_in, but your brackets didn't
match and I'm not sure where the extra close should be. Also, I suspect
you're wanting to delete empty dictionaries but I don't see that mentioned
in the text. If that is so, include the two commented statements.
-- 
Dale Strickland-Clark
Riverhall Systems - www.riverhall.co.uk



From rdiaz02 at gmail.com  Sat Sep  2 17:05:14 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Sat, 2 Sep 2006 23:05:14 +0200
Subject: Program to backtrack function calls in source code?
In-Reply-To: <1157230401.389698.234300@b28g2000cwb.googlegroups.com>
References: <1157230401.389698.234300@b28g2000cwb.googlegroups.com>
Message-ID: <624934630609021405k109ccebk40c538baab9f4a09@mail.gmail.com>

On 2 Sep 2006 13:53:21 -0700, forum at anton.e4ward.com
<forum at anton.e4ward.com> wrote:
> Hi,

Dear Anton,

> Is there a program
> that can extract all place in the source code where a variable is
> accessed or a function called?

I've been dealing with these issues lately too. You might want to
check pypesrc (http://www.jimbrooks.org/web/hypersrc/pypersrc.php).
Alternatively, and especially if you want to use these utilities from
vim or emacs, and want support for other languages in addition to
Python, you can use  exuberant ctags and idutils (I've just added some
python support to idutils). I have some additional information on
these issues at http://ligarto.org/rdiaz/idutils-et-al.html.

HTH,

R.



-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From shoaev_hares at yahoo.com  Mon Sep 18 11:32:57 2006
From: shoaev_hares at yahoo.com (SS Hares)
Date: 18 Sep 2006 08:32:57 -0700
Subject: win32com InvokeTypes is None
Message-ID: <1158593577.641919.154600@m7g2000cwm.googlegroups.com>

Hi,

I'm encountering an issue where the InvokeTypes method is returning
None and I'm unable to Dispatch a particular COM object from
DMCoreAutomation.dll. Everything works fine except for method
GetItemFields.

Using Python 2.4.2, pywin32 build 209.

Here is some example code (I can provide full source code if needed):

>>> from win32com.client import gencache
>>> file = 'C:\Shoaev\dev_qxdm\mylog.isf'
>>> mod = gencache.GetModuleForProgID('DMCoreAutomation.ItemStoreFiles')
>>> ds = mod.Dispatch('DMCoreAutomation.ItemStoreFiles')
>>> ds
<COMObject DMCoreAutomation.ItemStoreFiles>
>>> ss = mod.IItemStoreFiles(ds)
>>> ss
<win32com.gen_py.57E95830-6C61-4EB4-B18D-B3CE87313C28x0x1x0.IItemStoreFiles
instance at 0x18300760>
>>> hisf = ss.LoadItemStore(file)
>>> dc = ss.GetItem(hisf, 497)
>>> dc
<COMObject GetItem>
>>> sc = mod.IColorItem(dc)
>>> sc
<win32com.gen_py.57E95830-6C61-4EB4-B18D-B3CE87313C28x0x1x0.IColorItem
instance at 0x18670816>
>>> sc.GetItemKeyText()
u'[0x1007/017]'
>>> df = sc.GetItemFields()
>>> df
>>>

df here is None. Other IColorItem methods work correctly.

Here is the relevant bit from the makepy generated code:

	def GetItemFields(self):
		"""Get (DB parsed) item fields (returns DB parsed field interface)"""
		ret = self._oleobj_.InvokeTypes(414, LCID, 1, (9, 0), (),)
		if ret is not None:
			ret = Dispatch(ret, 'GetItemFields', None, UnicodeToString=0)
		return ret

>From pdb, self._oleobj_.InvokeTypes(414, LCID, 1, (9, 0), (),) is
returning None


Any idea what is going on?

Thanks,
Shoaev



From simon at brunningonline.net  Tue Sep 26 10:52:52 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 26 Sep 2006 15:52:52 +0100
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efbda2$qvb$1@sea.gmane.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaj9p$fqq$2@lust.ihug.co.nz> <efakif$idf$1@lust.ihug.co.nz>
	<mailman.644.1159256238.10491.python-list@python.org>
	<efapp8$rfd$3@lust.ihug.co.nz>
	<mailman.652.1159263385.10491.python-list@python.org>
	<efase7$16m$1@lust.ihug.co.nz>
	<mailman.683.1159279075.10491.python-list@python.org>
	<1159279813.569837.206530@e3g2000cwe.googlegroups.com>
	<efbda2$qvb$1@sea.gmane.org>
Message-ID: <8c7f10c60609260752k389022d2kb9791fe85820ec06@mail.gmail.com>

On 9/26/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Frank Millman wrote:
>
> > I am reminded of a spoof Latin motto from the days of my youth -
> >
> >    NIL ILLEGITIMO CARBORUNDUM
>
> isn't that usually written
>
>     Illegitimi non carborundum

According to the Wikipedia, neither is actually correct latin -
<http://en.wikipedia.org/wiki/Illegitimi_non_carborundum> - though I
think you are right about which form is the more common.

> or is that just due to differences between british latin and american latin ?

American Latin? Is that Lingua::Romana::Perligata?

-- 
Cheers,
Simon B,
simon at brunningonline.net


From sjmachin at lexicon.net  Sun Sep  3 18:21:28 2006
From: sjmachin at lexicon.net (John Machin)
Date: 3 Sep 2006 15:21:28 -0700
Subject: FYI: getting data from an OpenOffice.org spreadsheet
References: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1157322088.590298.192560@h48g2000cwc.googlegroups.com>

Sybren Stuvel wrote:
> Hi folks,
>
> Sometimes I have to feed data from an OpenOffice.org spreadsheet into
> some Python program. To make that really easy, I've written a small
> example program that connects to a running OpenOffice.org instance and
> reads the data from the currently opened spreadsheet.
>
> Check out http://www.stuvel.eu/archive/28/ to see the source and
> requirements. It took a lot of digging in the rather complex OOo API
> documentation, but the end result is just as I like it: clean and
> simple. I hope this helps people out!
>

Suppose one has over a hundred spreadsheets (real-life example: budgets
from an organisation's reporting centres) ... manually opening each in
OOo Calc is less than appealing, and not very robust.

With the 2nd example (alf's question: copy OOo Calc file to Excel xls
file), I don't see any advantage at all over the manual procedure (1)
start OOo Calc (2) open Calc file (3) File > Save As > select Microsoft
Excel 97 etc format > ... what am I missing? Your solution requires (1)
edit script to change name of output file; save script (where?) (2)
start OOo Calc with magic-spell on the command line (3) open calc file
(4) run script.

How does one write a script that can be in control e.g. script starts
OOo (if necessary), and extracts some data from all spreadsheet files
in a given directory (while one is at lunch)? 

Cheers,
John



From __peter__ at web.de  Sat Sep 30 05:33:45 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 30 Sep 2006 11:33:45 +0200
Subject: Escapeism
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>
Message-ID: <efldii$ok3$03$1@news.t-online.com>

Kay Schluehr wrote:

> Usually I struggle a short while with \ and either succeed or give up.
> Today I'm in a different mood and don't give up. So here is my
> question:
> 
> You have an unknown character string c such as '\n' , '\a' , '\7' etc.
> 
> How do you echo them using print?
> 
> print_str( c ) prints representation '\a' to stdout for c = '\a'
> print_str( c ) prints representation '\n' for c = '\n'
> ...
> 
> It is required that not a beep or a linebreak shall be printed.
> 
> First of all it has be remarked that it is impossible to a certain
> extent. That's because e.g. c = '\a' and c = '\7' do represent the same
> string but this ambiguity doesn't occur for many numbers. But lets
> weaken the requirement and fix a canonical representation in case of
> ambiguity. I'm still getting stuck here.

I don't understand the question. Wouldn't the canonical representation be
repr(c) or repr(c)[1:-1]?

Peter


From fakeaddress at nowhere.org  Sun Sep 17 21:18:59 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Mon, 18 Sep 2006 01:18:59 GMT
Subject: Outbound port on sockets
In-Reply-To: <mailman.142.1158342806.10491.python-list@python.org>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>	<4mt1ajF7gs0hU1@uni-berlin.de>	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>	<4mv51sF7t5lmU1@uni-berlin.de>	<12glesm56ghquc4@corp.supernews.com>	<mailman.136.1158334482.10491.python-list@python.org>	<12gljhfc4f81p97@corp.supernews.com>
	<mailman.142.1158342806.10491.python-list@python.org>
Message-ID: <7umPg.1719$TV3.349@newssvr21.news.prodigy.com>

Steve Holden wrote:
> Grant Edwards wrote:
>>> Well, one of ftpd implementations I have here (C code from RTEMS) does
>>> this:
>>>
>>>      /* anchor socket to avoid multi-homing problems */
>>>      data_source = info->ctrl_addr;
>>>      data_source.sin_port = htons(20); /* ftp-data port */
>>>      if(bind(s, (struct sockaddr *)&data_source, sizeof( [...]
>>>      if(connect(s, [...]

[...]
> I suspect that the reason for the comment is simply that the connection 
> out from the server is being bound to the same interface (*IP address*) 
> that the inbound request arrived on. That way it's less likely that the 
> data stream will be routed differently from the control (port 21) stream.

That still doesn't explain why they pass 20 as the port number.
To specify an IP address, but let the system choose an arbitrary
open port, use:

     bind((specific_IP, 0))


-- 
--Bryan





From cjw at sympatico.ca  Sat Sep  2 19:28:25 2006
From: cjw at sympatico.ca (Colin J. Williams)
Date: Sat, 02 Sep 2006 19:28:25 -0400
Subject: NetBeans and Jython
In-Reply-To: <edckd7$vru$1@fegnews.vip.hr>
References: <edckd7$vru$1@fegnews.vip.hr>
Message-ID: <edd431$4fu$1@sea.gmane.org>

tatamata wrote:
> Hello.
> I installed NetBeans, Jython and Coyote. I hoped that I could use Swing GUI 
> builder intergrated in NetBeans (Matisse?) with Jython in "Delphi" way. But, 
> it seems that I can drag and drop controls only in pure Java application, 
> not in Jython application?
> Does anybody uses NetBeans as GUI/RAD tool for Jython/Python?
> 
> Regards,
> 
> Zlatko 
> 
> 
uno.py, which is part of the OpenOffice.org suite, provides access to 
NetBeans.

Colin W.



From stefaan.himpe at gmail.com  Mon Sep 11 16:21:05 2006
From: stefaan.himpe at gmail.com (stefaan.himpe at gmail.com)
Date: 11 Sep 2006 13:21:05 -0700
Subject: auto upgrade scripts?
Message-ID: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>

Hello list,

Is anyone aware of a (light-weight, easy-to-use)
auto-upgrade framework for python scripts?

I find it hard to believe no one has wanted this before,
yet google doesn't find too much relevant stuff.

Thanks,
Best regards,
Stefaan.



From fredrik at pythonware.com  Thu Sep 28 01:08:30 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 07:08:30 +0200
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <roy-D89592.19581727092006@reader2.panix.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
Message-ID: <efflcd$icb$1@sea.gmane.org>

Roy Smith wrote:

> Things like decorators and metaclasses certainly add power, but they add 
> complexity too.

never used them.  does that make me an amateur?

</F>



From dingbat at codesmiths.com  Wed Sep  6 09:45:11 2006
From: dingbat at codesmiths.com (Andy Dingley)
Date: 6 Sep 2006 06:45:11 -0700
Subject: python vs java
In-Reply-To: <edmefq$t5n$1@news4.fe.internet.bosch.com>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
Message-ID: <1157550311.739734.211840@m73g2000cwd.googlegroups.com>


Aravind wrote:

> some of my friends told that python and java are similar in the idea of
> platform independency.

Similar in goal, but quite different in approach.

Python supports lots of platforms and goes to great lengths to offer
facades around whatever  features a platform does have, so as to offer
the same benefits as Unix.  Java lives in a virtualised environment
where it pretends there aren't any platforms. Perl pretends everything
_is_ Unix and falls flat when it isn't.

If you can cope with this, Java is simpler and less platform-bound.

If you actually need to get OS-level work done, Python is wonderful.
You can write stuff that hooks in at a fairly deep level, yet really is
portable.



From gnewsg at gmail.com  Mon Sep 18 10:08:27 2006
From: gnewsg at gmail.com (billie)
Date: 18 Sep 2006 07:08:27 -0700
Subject: Interact with system command prompt
Message-ID: <1158588506.989070.257550@m7g2000cwm.googlegroups.com>

Hi all. I would like to know if there's some python framework able to
interact with system command prompt (cmd.exe or /bin/sh, depending on
the system) from python.
I need something that supports key/path auto completion by pressing TAB
button and the possibility to use interactive programs like ftp, gpg or
even vi.
I would like to write a remote shell application the best featured as
possible and I'm wondering if Python is able to emulate the
functionalities of applications like telnet or ssh.

Thanks in advance for your helping.



From sjmachin at lexicon.net  Thu Sep 28 23:07:37 2006
From: sjmachin at lexicon.net (John Machin)
Date: 28 Sep 2006 20:07:37 -0700
Subject: sqlite3 error
In-Reply-To: <mailman.912.1159494600.10491.python-list@python.org>
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<1159394058.945948.119410@h48g2000cwc.googlegroups.com>
	<yCQSg.41$1n3.351@news.tufts.edu>
	<1159493520.289291.276850@b28g2000cwb.googlegroups.com>
	<mailman.912.1159494600.10491.python-list@python.org>
Message-ID: <1159499256.956299.250900@k70g2000cwa.googlegroups.com>


Steve Holden wrote:
> John Machin wrote:
> > John Salerno wrote:
> >
> >>John Machin wrote:
> >>
> >>>John Salerno wrote:
> >>>
> >>>>CREATE TABLE Researchers (
> >>>>     researcherID varchar(9) PRIMARY KEY NOT NULL,
> >>>>     birthYear int(4) DEFAULT NULL,
> >>>>     birthMonth int(2) DEFAULT NULL,
> >>>>     birthDay int(2) DEFAULT NULL,
> >>>>     birthCountry varchar(50) DEFAULT NULL,
> >>>>     birthState char(2) DEFAULT NULL,
> >>>>     birthCity varchar(50) DEFAULT NULL,
> >>>>     nameFirst varchar(50) NOT NULL,
> >>>>     nameLast varchar(50) NOT NULL,
> >>>>     nameGiven varchar(255) DEFAULT NULL,
> >>>
> >>>A bit OT, but one answer to the "can you make a living with just
> >>>Python" question is "Yup, tool of choice for rummaging in and fixing
> >>>data that's been mangled by users cramming it into dodgy data models"
> >>>:-)
> >>>
> >
> > [snip]
> >
> >>>(2) It's not apparent how you would use the first, last, and given
> >>>names columns, especially with two of them being "not null". Consider
> >>>how you would store e.g.:
> >>>J Edgar Hoover
> >>>DJ Delorie
> >>>Sukarno
> >>>35
> >>>Maggie Cheung Man-Yuk
> >>>Molnar Janos
> >>>Fatimah binte Rahman
> >>>Zhang Manyu
> >>
> >>Not sure I follow you on some of these examples. In the case of J Edgar
> >>Hoover, I would just put the full name for his first name, or if "J" is
> >>entered, then just that, I suppose. Given name will be first name +
> >>middle name(s). (I took most of this schema from a baseball database, so
> >>maybe it's just something that worked better there.)
> >
> >
> > You sure to be using "last name" to mean "surname" in the sense of
> > unchanging family name e.g. John and Mary Smith are the children of
> > Fred Smith, who is the son of Joe Smith.
> >
> > You would address a letter to Mary as "Dear Ms Smith", and in follow-on
> > paragraphs in (say) a news article might refer to her using only the
> > surname  e.g. "Smith also announced ...".
> >
> > The problems are (1) there are cultures that don't have the concept of
> > a surname, and if they do, it may not be the "last name" (2) the name
> > may consist of only one word (giving you problems with "not null") or
> > not even be a word.
> >
> > DJ Delorie -- his "given name" *is* DJ
> > Sukarno -- one word name
> > 35 -- some jurisdictions allow name to include (or consist solely of)
> > digits
> > Maggie Cheung Man-Yuk -- surname is Cheung [Hong Kong romanisation]
> > Molnar Janos -- surname is Molnar
> > Fatimah binte Rahman -- no surname; daughter of person whose given name
> > is Rahman
> > Zhang Manyu -- surname is Zhang [pinyin romanisation]; same person as
> > Maggie Cheung Man-Yuk
> >
> > It gets better:
> >
> > Iceland: Jon Bjornsson and Hildur Bjornsdottir are the children of
> > Bjorn Eiriksson.
> >
> > Portuguese: Jose Carlos Fernandes [mothers's family name] Rodrigues
> > [fathers's family name]; first step in shortening gives Jose Carlos
> > Rodrigues -- no drama here, but compare with Spanish: Jose Carlos
> > Fernandez [father's family name] Rodriguez [mother's family name],
> > shortened to Jose Carlos Fernandez.
> >
> > [parts of] Somalia, Ethiopia: [using English given-name words for
> > clarity] Tom Dick Harry and Janet Dick Harry are the children of Dick
> > Harry Fred, who is the son of Harry Fred Joe.
> >
> > Vietnamese: Full name e.g. Nguyen Thi Hoa Dung -- I have seen this
> > recorded as last name = Nguyen (that's the family name; doing well so
> > far), but first name = Thi. Thi means "Ms" or "female". The "first
> > name" is actually Dung. Given the popularity of Nguyen as a family name
> > (about 50% !!) , the recorded information has narrowed the choice to
> > about 25% of the Vietnamese population :-(
> >
> While I don't dispute any of this erudite display of esoteric
> nomenclature wisdom the fact remains that many (predominantly Western)
> databases do tend to use first and last name (in America often with the
> addition of a one- or two-character "middle initial" field).
>
> So, having distilled your knowledge to its essence could you please give
> me some prescriptive advice about what I *should* do? :-)
>

Yes; the details would depend on the application (movie actor database,
factory payroll, pension fund, social security, homeland security, ...)
and should follow fairly naturally from a requirements analysis. The
main pre-requisite is for both the users and IT to get an attitude
transplant :-)

Cheers,
John

Cheers,
John



From sjmachin at lexicon.net  Wed Sep  6 01:29:59 2006
From: sjmachin at lexicon.net (John Machin)
Date: 5 Sep 2006 22:29:59 -0700
Subject: Unicode string handling problem
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
	<1157506499.619835.62950@e3g2000cwe.googlegroups.com>
	<7iesf2d82cegjj3haubc6rhcbkk3lcq230@4ax.com>
Message-ID: <1157520599.406234.201050@d34g2000cwd.googlegroups.com>

Richard Schulman wrote:
[big snip]
>
> The BOM is little-endian, I believe.
Correct.

> >in_file = codecs.open(filepath, mode, encoding="utf16???????")
>
> Right you are. Here is the output produced by so doing:

You don't say which encoding you used, but I guess that you used
utf_16_le.

>
> <type 'unicode'>
> u'\ufeffINSERT INTO [...] VALUES\N'

Use utf_16 -- it will strip off the BOM for you.

> <type 'unicode'>
> u'\n'
> 0   [The counter value]
>
[snip]
> Yes, it did. Many thanks! Now I've got to figure out the best way to
> handle that \n\n at the end of each row, which the program is
> interpreting as two rows.

Well we don't know yet exactly what you have there. We need a byte dump
of the first few bytes of your file. Get into the interactive
interpreter and do this:

open('yourfile', 'rb').read(200)
(the 'b' is for binary, in case you are on Windows)
That will show us exactly what's there, without *any* EOL
interpretation at all.


> That represents two surprises: first, I
> thought that Microsoft files ended as \n\r ;

Nah. Wrong on two counts. In text mode, Microsoft *lines* end in \r\n
(not \n\r); *files* may end in ctrl-Z aka chr(26) -- an inheritance
from CP/M.

Ummmm ... are you saying the file has \n\r at the end of each row?? How
did you know that if you didn't know what if any BOM it had??? Who
created the file????

> second, I thought that
> Python mode "rU" was supposed to be the universal eol handler and
> would handle the \n\r as one mark.

Nah again. It contemplates only \n, \r, and \r\n as end of line. See
the docs. Thus \n\r becomes *two* newlines when read with "rU".

Having "\n\r" at the end of each row does fit with your symptoms:

| >>> bom = u"\ufeff"
| >>> guff = '\n\r'.join(['abc', 'def', 'ghi'])
| >>> guffu = unicode(guff)
| >>> import codecs
| >>> f = codecs.open('guff.utf16le', 'wb', encoding='utf_16_le')
| >>> f.write(bom+guffu)
| >>> f.close()

| >>> open('guff.utf16le', 'rb').read() #### see exactly what we've got

|
'\xff\xfea\x00b\x00c\x00\n\x00\r\x00d\x00e\x00f\x00\n\x00\r\x00g\x00h\x00i\x00'

| >>> codecs.open('guff.utf16le', 'r', encoding='utf_16').read()
| u'abc\n\rdef\n\rghi' ######### Look, Mom, no BOM!

| >>> codecs.open('guff.utf16le', 'rU', encoding='utf_16').read()
| u'abc\n\ndef\n\nghi' #### U means \r -> \n

| >>> codecs.open('guff.utf16le', 'rU', encoding='utf_16_le').read()
| u'\ufeffabc\n\ndef\n\nghi' ######### reproduces your second
experience

| >>> open('guff.utf16le', 'rU').readlines()
| ['\xff\xfea\x00b\x00c\x00\n', '\x00\n', '\x00d\x00e\x00f\x00\n',
'\x00\n', '\x00
| g\x00h\x00i\x00']
| >>> f = open('guff.utf16le', 'rU')
| >>> f.readline()
| '\xff\xfea\x00b\x00c\x00\n'
| >>> f.readline()
| '\x00\n' ######### reproduces your first experience
| >>> f.readline()
| '\x00d\x00e\x00f\x00\n'
| >>>

If that file is a one-off, you can obviously fix it by
throwing away every second line. Otherwise, if it's an ongoing
exercise, you need to talk sternly to the file's creator :-)

HTH,
John



From martin at v.loewis.de  Sun Sep 10 04:56:33 2006
From: martin at v.loewis.de (=?windows-1252?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 10 Sep 2006 10:56:33 +0200
Subject: OT: What encoding is this?
In-Reply-To: <XvIMg.26282$rP1.505@news-server.bigpond.net.au>
References: <mailman.219.1157842005.5279.python-list@python.org>
	<XvIMg.26282$rP1.505@news-server.bigpond.net.au>
Message-ID: <4503D341.2040509@v.loewis.de>

Neil Hodgson schrieb:
>>     http://www.loppen.dk/side.php?navn=getin
>
> More pages without declarations are produced on Windows so
> I'd guess that its Windows-1252. To tell, look for prices in Euros ("?")
> on the site.

Ah, but they still use krones in Denmark :-)

Regards,
Martin


From jon+usenet at unequivocal.co.uk  Tue Sep 26 14:04:24 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 18:04:24 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
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	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
	<mailman.708.1159287078.10491.python-list@python.org>
	<slrnehilui.evq.jon+usenet@snowy.squish.net>
	<mailman.718.1159292292.10491.python-list@python.org>
Message-ID: <slrnehiqso.7kj.jon+usenet@snowy.squish.net>

In article <mailman.718.1159292292.10491.python-list at python.org>, Brian Quinlan wrote:
> If, in the example that I showed, the less-than character was not 
> correctly escaped, then it might not manifest itself frequently in a 
> typical application because the less-than character is seldom used in 
> English prose.

OK, but effectively what you're talking about here is testing the
'cgi.escape' function itself - said test of course being part and
parcel of the cgi package and therefore easily updatable if the
cgi.escape function changes.

> Also, assuming that single case was trivial to test without a test 
> harness, how many web pages do I have to look at to be reasonably 
> confident that *every* feature works correctly?

It depends on how many features you have! My templating system, for
example, has sections and replacements, and that's it. Replacements
can be unencoded, html-encoded or url-encoded. That's approximately
4 things to test ;-) Plus, the templating code basically never changes
so doesn't need regression testing.


From rasmussen.bryan at gmail.com  Fri Sep  8 05:47:17 2006
From: rasmussen.bryan at gmail.com (bryan rasmussen)
Date: Fri, 8 Sep 2006 11:47:17 +0200
Subject: mobile phone app
In-Reply-To: <edrc9j$u9f$1@news4.fe.internet.bosch.com>
References: <edrc9j$u9f$1@news4.fe.internet.bosch.com>
Message-ID: <3bb44c6e0609080247u2bc7e3b4oa37355160532656b@mail.gmail.com>

The S60 series of phones from nokia supports python
http://www.google.com/search?hl=en&q=s60+nokia

Cheers,
Bryan Rasmussen

On 9/8/06, Aravind <aravindmail007 at yahoo.co.in> wrote:
> hi,
>
> Can anyone tell me if python can be used for developing mobile phone apps as
> Java ? If yes, any comparisons ? Also pls tell me where i can get the tools
> and tutorials for the same...
>
> Thanks in advance...
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From steve at holdenweb.com  Tue Sep 26 02:46:33 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 02:46:33 -0400
Subject: A critique of cgi.escape
In-Reply-To: <slrnehg3v0.7sa.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>	<mailman.579.1159199258.10491.python-list@python.org>	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>	<mailman.581.1159200379.10491.python-list@python.org>	<slrnehg086.7sa.jon+usenet@snowy.squish.net>	<mailman.585.1159204290.10491.python-list@python.org>
	<slrnehg3v0.7sa.jon+usenet@snowy.squish.net>
Message-ID: <efaian$mn1$1@sea.gmane.org>

Jon Ribbens wrote:
> In article <mailman.585.1159204290.10491.python-list at python.org>, Brian Quinlan wrote:
> 
>>>Now you're just being ridiculous. In this thread you have been rude,
>>>evasive, insulting, vague, hypocritical, and have failed to answer
>>>substantive points in favour of sarcastic and erroneous sniping - I'd
>>>suggest it's you that needs to worry about being taken seriously.
>>
>>Actually, at least in the context of this mailing list, Fredrik doesn't 
>>have to worry about that at all. Why? Because he is one of the most 
>>prolific contributers to the Python language and libraries
> 
> 
> I would have hoped that people don't treat that as a licence to be
> obnoxious, though. I am aware of Fredrik's history, which is why I
> was somewhat surprised and disappointed that he was being so rude
> and unpleasant in this thread. He is not living up to his reputation
> at all. Maybe he's having a bad day ;-)

I generally find that Fredrik's rudeness quotient is satisfactorily 
biased towards discouraging ill-informed comment. As far as rudeness 
goes, I've found your approach to this discussion to be pretty 
obnoxious, and I'm generally know as someone with a high tolerance for 
idiotic behaviour.

If your intention was to troll you could not have crafted your 
contributions in a better way.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From johnj at pulver.com  Sun Sep  3 21:27:28 2006
From: johnj at pulver.com (John J. Jones)
Date: Sun, 3 Sep 2006 21:27:28 -0400
Subject: Python newbie with a problem writing files
Message-ID: <D707CAF326FAE045985902A8879D76F801739EE5@housesoftheholy.pulver.local>

Dohhhhh!!! You are right. It was staring me in the face. I shouldn't
have that '=' sign at all!! I removed it and it works!! Now I just have
to put in a routine to remove non-ascii characters from the data before
writing it and all will be golden.  

 

Thanks

JJ

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From timr at probo.com  Sat Sep 16 21:00:11 2006
From: timr at probo.com (Tim Roberts)
Date: Sun, 17 Sep 2006 01:00:11 GMT
Subject: Is there a way to find IP address?
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
	<mailman.41.1158163545.10491.python-list@python.org>
	<1158301077.702087.55680@k70g2000cwa.googlegroups.com>
Message-ID: <6c7pg2d3moio72nnvmdr7s1017d0b7kbr9@4ax.com>

"Lad" <python at hope.cz> wrote:
>Fredrik Lundh wrote:
>> Lad wrote:
>>
>> > Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
>> > If a user  is behind a proxy, I will log  proxy's IP address only.
>> > Is there a way how to find a real IP user's address?
>>
>> os.environ["HTTP_X_FORWARDED_FOR"]
>>
>> (but that can easily be spoofed, and is mostly meaningless if the user
>> uses local IP addresses at the other side of the proxy, so you should
>> use it with care)
>>
>Hello Fredrik,
>Thank you for your reply.
>How can be HTTP_X_FORWARDED_FOR easily  spoofed? I thought that  IP
>address is not possible change.

No, but HTTP headers are just text.  A client can put whatever it wants in
them.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From hpsekhon at googlemail.com  Thu Sep  7 11:35:28 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Thu, 07 Sep 2006 16:35:28 +0100
Subject: sending emails using python
In-Reply-To: <12g0e83gshlds40@corp.supernews.com>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>	<B51712964.236.7189.1@mx-extra>	<mailman.111.1157617795.5279.python-list@python.org>	<slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>	<12g07gf97898rff@corp.supernews.com>	<B51734183.306.7705.3@mx-extra>	<mailman.123.1157638459.5279.python-list@python.org>
	<12g0e83gshlds40@corp.supernews.com>
Message-ID: <45003C40.3070805@googlemail.com>

Grant Edwards wrote:
> On 2006-09-07, Tim Williams <tim at tdw.net> wrote:
>
>   
>>>  Wouldn't you use a SMTP client to send email?
>>>
>>>  I would, but I don't use exchange server. :)
>>>
>>> The one exchange server I used in the past didn't accept SMTP
>>> mail.
>>>
>>> errr, I used to admin Exchange, if it does accept SMTP then
>>> how could it function as a live mail server?
>>>       
>> Did you mean *doesn't accept* ??
>>     
>
> One presumes he did.
>
>   
>> There are a couple of possibilities at least, of the top of my
>> head:
>>
>> * The IMC / IMS (smtp connector) is located on a different
>>   server within its Exchange organisation, or a DMZ'ed
>>   exchange server that is only used for SMTP.
>>
>> * The server doesn't accept SMTP from local IP ranges, only
>>   from external (ie inbound email)
>>     
>
> I believe it was the latter.  I'm pretty sure there was only
> one server.  When I first started at that company it did accept
> SMTP connections on it's internal network interface.
>
>   
>> Outlook / Exchange clients use MAPI, internal SMTP is only a
>> requirement if you have non-MAPI clients sending email through
>> the server.
>>     
>
> And BOFH was horrified by non-MS software, so he shut off IMAP
> support and SMTP support on the internal network as a way to
> force everybody to switch to Outlook.
>
>   
I did mean *doesn't accept*, sorry was in a rush...

BOFH?

lol

If he were a better op then perhaps he would be using unix based system 
himself and wouldn't be so discriminating... but then you can't hope for 
the world with windows only "techies"... although in fairness, Exchange 
and Outlook is a great combination...

you could always try ximian's exchange connector for evolution, I 
managed to get some emails with that...

but anyway, ot...


Hari Sekhon


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From jon+usenet at unequivocal.co.uk  Tue Sep 26 10:58:35 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 14:58:35 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
Message-ID: <slrnehig0d.9o0.jon+usenet@snowy.squish.net>

In article <mailman.690.1159282116.10491.python-list at python.org>, Fredrik Lundh wrote:
> I know the answer.  I'm pretty sure everyone else who's actually
> read my posts to this thread might have figured it out by now, too.
> But since you're still trying to "win" the debate, long after it's
> over, I think it's safest to end this thread right now.  *plonk* 

It's sad to see a grown man throw his toys out of his pram, just
because he's losing an argument...


From niemand.leermann at thomas-guettler.de  Fri Sep 22 09:13:52 2006
From: niemand.leermann at thomas-guettler.de (Thomas Guettler)
Date: 22 Sep 2006 13:13:52 GMT
Subject: what is the best practice to separate Pygtk and long running
	thread code
References: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
Message-ID: <4ni5sgFakb86U1@individual.net>

seb wrote:

> Hi,
>
> I am using pygtk for the first times.
>
> I am wondering what would be the best "pattern" to interface pygtk with
> a thread.
>
> The thread is collecting informations (over the network for example) or
> is doing some long calculations.

Hi,

I would use several *processes*. If your scripts runs on Unix/Linux
you can use select() on the filedescriptors of the processes you created
with popen. On Windows you need to poll them, but maybe this is
better than threads, too. With idle_add you can get data from
the subproceses. It gets called if there are no actions in the
event-loop.

HTH,
 Thomas

-- 
Thomas G?ttler, http://www.thomas-guettler.de/ http://www.tbz-pariv.de/
E-Mail: guettli (*) thomas-guettler + de
Spam Catcher: niemand.leermann at thomas-guettler.de



From kylotan at gmail.com  Wed Sep  6 08:20:28 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 6 Sep 2006 05:20:28 -0700
Subject: getting quick arp request
In-Reply-To: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
Message-ID: <1157545228.519716.259040@i42g2000cwa.googlegroups.com>

seb wrote:
> I need to write a scanner that test all the IP adresses that repond on
> a given port.
...
> I am using winXP pro on a 2GHZ P4 and 512 Mo.

If you have XP Service Pack 2, it cripples port-scanning as part of a
'security' fix. Broadly speaking, it limits the rate at which you can
make connections at the OS level; this will show up as event 4226 in
the Event Viewer if it affects you.

-- 
Ben Sizer



From hancock.robert at gmail.com  Wed Sep 27 11:37:24 2006
From: hancock.robert at gmail.com (milan_sanremo)
Date: 27 Sep 2006 08:37:24 -0700
Subject: Python 2.5 Installation and Tkinter
In-Reply-To: <4514d08d$0$31765$9b622d9e@news.freenet.de>
References: <1158958988.315609.242040@h48g2000cwc.googlegroups.com>
	<1158966487.752158.90870@m7g2000cwm.googlegroups.com>
	<4514d08d$0$31765$9b622d9e@news.freenet.de>
Message-ID: <1159371444.238494.210200@m7g2000cwm.googlegroups.com>


> The system doesn't look in /usr/local/lib when searching for shared
> libraries. You have the usual options:
>
> 1. Set LD_RUN_PATH at build time to include /usr/local/lib
> 2. Set LD_LIBRARY_PATH at run time to include /usr/local/lib
> 3. Use crle to add /usr/local/lib to the system wide search path
>
> Even though it is quite intrusive, I typically prefer to do 3.
> That way, I don't have to hard-code library paths into executables,
> don't need my users to set environment variables, and have most
> autoconf-based software work out of the box.
>
> If you have never used crle before, understand that great care
> is necessary in using it. See the EXAMPLES in crle(8). You can
> either use -u -l to add a directory at the end of the search
> path, or just -l to overwrite the search path; make sure the
> original search path is still included.
>
> Regards,
> Martin

Thanks for the detailed reply.  I tried you suggestions regarding the
linking and they produce a new error message.

gcc -shared
build/temp.solaris-2.10-i86pc-2.5/export/home/rhancock/download/install/Python-2.5/Modules/_tkinter.o
build/temp.solaris-2.10-i86pc-2.5/export/home/rhancock/download/install/Python-2.5/Modules/tkappinit.o
-L/usr/openwin/lib -L/usr/local/lib -ltk8.4 -ltcl8.4 -lX11 -o
build/lib.solaris-2.10-i86pc-2.5/_tkinter.so
*** WARNING: renaming "_tkinter" since importing it failed: ld.so.1:
python: fatal: libtk8.4.so: open failed: No such file or directory
running build_scripts
creating build/scripts-2.5

Yet a ls of /usr/loca/lib shows the file exists:
drwxr-xr-x   4 root     root         512 Sep 27 03:37 .
drwxr-xr-x  10 root     root         512 Sep 27 03:28 ..
-rw-r--r--   1 root     root         626 Sep 27 02:31 charset.alias
-r-xr-xr-x   1 root     root      786320 Sep 27 03:35 libtcl8.4.so
-rw-r--r--   1 root     root        2292 Sep 27 03:35 libtclstub8.4.a
-r-xr-xr-x   1 root     root      977116 Sep 27 03:37 libtk8.4.so
-rw-r--r--   1 root     root        3548 Sep 27 03:37 libtkstub8.4.a
drwxr-xr-x   8 root     root         512 Sep 27 03:35 tcl8.4
-rw-r--r--   1 root     root        7254 Sep 27 03:35 tclConfig.sh
drwxr-xr-x   5 root     root        1024 Sep 27 03:37 tk8.4
-rw-r--r--   1 root     root        3566 Sep 27 03:37 tkConfig.sh

LD_RUN_PATH is set to /usr/local/lib.

I'm running this as root.  I've built numerous programs ofver the last
five days, all without a problem.  What am I missing on the Tkinter
inclusion?



From steve at holdenweb.com  Mon Sep 18 11:17:57 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 18 Sep 2006 11:17:57 -0400
Subject: Multiping
In-Reply-To: <20060918150343.83893.qmail@web54702.mail.yahoo.com>
References: <20060918150343.83893.qmail@web54702.mail.yahoo.com>
Message-ID: <eemd9m$ku6$2@sea.gmane.org>

Fransiska M Argasetya wrote:
> dear all
>  
> i have the following code that keeps on pinging several sites infinitely
>  
> i was wondering if anyone could help me out in how to make the results 
> for each set of loops of the pings to be displayed in an excel file? i 
> need to use the maximum and minimum delay for my project.
>  
> thank you for any response
>  
I'm afraid my only response is to ask you to stop posting the same 
question multiple times ... and just wait for someone to answer the 
question! If there's no reply in 48 hours a brief reminder (rather than 
a complete re-post) might be in order. Until then, patience should be 
the order of the day.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From pope_ratzinger_benedict at india.com  Sun Sep 17 12:25:31 2006
From: pope_ratzinger_benedict at india.com (pope_ratzinger_benedict at india.com)
Date: 17 Sep 2006 09:25:31 -0700
Subject: MORE EVIDENCE Re: 911 FORGERY bigger than the Protocols of the
	Learned Elders of Zion
In-Reply-To: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
Message-ID: <1158510331.112039.64220@b28g2000cwb.googlegroups.com>

In reply to the ATTACK DOGS OF THE CRIMINAL GOVERNMENT:

Evidentiary documents that I forgot to post.
The first is a 204 page defense by Dr Steven Jones a pdf file.

http://www.journalof911studies.com/JonesAnswersQuestionsWorldTradeCenter.pdf

Even FLUORINE in thermate residue and 1,3-DIPHENYL PROPANE has been
found in WTC dust in abnormally high quantities. A tell tale sign of
sol-gel thermate. Evidence is piling up and we are not releasing it all
in one step to get them to lie. They show us the Pentagon video. we
will check if it is forged. Its been too late for them to give it out.

The second is "Popular Mechanics in full retreat on Charles Goyette
Show"
audio interview. It is quite instructive.

http://911blogger.com/node/2278?page=2

Haven't listened yet, but saw it on a news group and sounds promising:

    Is this why Popular Mechanics canceled some appearances?Listen to
this MP3 file of Popular Mechanics on the Charles Goyette show in
Phoenix. Charles has him backpedaling big time. Pass this MP3 file to
any one who is leaning on Popular Mechanics to support their continued
belief in the official story.

5MB Audio download:

http://www.911podcasts.com/display.php?vid=158


Even the SWISS ARE BEGINNING TO DOUBT. Here is the Link:

http://www.blick.ch/news/ausland/9-11/artikel45057?display=kommentar

and here is translation:

http://72.14.203.104/search?q=cache:atJgS-_inyAJ:www.libertyforum.org/showflat.php%3FCat%3D%26Board%3Dnews_crime%26Number%3D294939077+swiss+911+doubt&hl=en&lr=&strip=1


pope_ratzinger_benedict at india.com wrote:
> Do not bury your head in the sand ... Do not practice denial ... It
> will only bring you to terrible shame and grief ... Do not be afraid of
> saying the truth ... Do not be afraid of death ... God will take care
> of you and your kins as he took care of the flock of Abraham, Moses and
> Jesus.
>
> Here you will find all the truth, movies, audios and proof for your
> eyes to see (even the swiss are beginning to doubt 911) :
>
> www.scholarsfor911truth.org
> www.journalof911studies.org
> www.st911.org
>
> also go to Alex Jones site:
>
> infowars.com
> prisonplanet.com
>
> Distribute fliers on the site at your churches and synagogues, in your
> schools. Call your elected officials. Mail anonymously to your local
> fire station chiefs and your local police
> sherrifs. Send, to any and all CIA, FBI, Military personell and Court
> Judges that you know.
>
> We need to move fast and quick before the terrorists of 911 bring
> another false flag terrorism
> which may be biological, nuclear or what we cannot even imagine.
>
> They dont care about the lives or the freedom of the american people.
> They only love their evil agendas.
>
> God Bless you All
>
> Search Keywords:
> Thermate
> Sulfur
> Potassium
> Manganese
> Aluminum
> Thermite
> Alex Jones
> Steven Jones
> Controlled Demolition
> Popular Mechanics
> Larry Silverstein
> Marvin Bush
> Stratcor
> Stratesec
> Ground Zero



From gagsl-py at yahoo.com.ar  Mon Sep 25 21:50:20 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 25 Sep 2006 22:50:20 -0300
Subject: ctypes question about call by reference
In-Reply-To: <1hm6s39.kwqjy3a5kybkN%rhymes@myself.com>
References: <mailman.535.1159113152.10491.python-list@python.org>
	<1hm6khm.1wdxlsif8cyfN%rhymes@myself.com>
	<mailman.536.1159115299.10491.python-list@python.org>
	<1hm6s39.kwqjy3a5kybkN%rhymes@myself.com>
Message-ID: <7.0.1.0.0.20060925224616.041097b8@yahoo.com.ar>

At Sunday 24/9/2006 15:49, Lawrence Oluyede wrote:

> > Is it at all possbile to use a struct without defining it with ctypes?
>
>If you want to use it you have to define it somewhere...

If it's an "opaque" thing, totally managed by the external code, yes 
- treat it as a pointer.
That is, if you never have to access its fields, or create/destroy it 
in the "python" code (using an external function would be ok).



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From xmlhacker at gmail.com  Thu Sep 14 02:09:38 2006
From: xmlhacker at gmail.com (M. David Peterson)
Date: Thu, 14 Sep 2006 00:09:38 -0600
Subject: [IronPython] [ANN] IronPython Community Edition 1.0r1
In-Reply-To: <5b0248170609132225q37b49418od3d1fea1ad77d0d@mail.gmail.com>
References: <5b0248170609132225q37b49418od3d1fea1ad77d0d@mail.gmail.com>
Message-ID: <eab75e160609132309j7c07201excbdb7a945dab6a49@mail.gmail.com>

http://www.oreillynet.com/windows/blog/2006/09/seo_sanghyeonipce_ironpython_c.html

Seo, do you have a blog I can point people to?

Either way, Thanks!  This will make things TONS easier in regards to running
IronPython on Mono. :)

On 9/13/06, Sanghyeon Seo <sanxiyn at gmail.com> wrote:
>
> I am happy to announce IronPython Community Edition (IPCE for short)
> 1.0 revision 1, based on IronPython 1.0, to the world.
>
> Get it here:
> http://sparcs.kaist.ac.kr/~tinuviel/download/IPCE-1.0r1.zip
>
> Binary is built with Mono 1.1.17.1.
>
> Benefits of this edition:
>
> 1. You don't need to fight Mono with non-working line editing or
> white-on-white "blind" console on Linux or Mac. A fix for this issue
> and fixed binary is already included.
>
> 2. You don't need to edit makefile to build from the source on Mono.
>
> 3. Various bugfixes are included: patches are available here:
> http://sparcs.kaist.ac.kr/~tinuviel/fepy/patches/1.0/
>
> patch-ironpython-mono-console
> patch-ironpython-mono-makefile
> Discussed above.
>
> patch-ironpython-co-flags
> This patch fixes an issue that co_flags reports **-argument only
> function to have *-argument as well.
>
> patch-ironpython-codedom-empty-return
> This patch fixes an issue that CodeDom generator doesn't handle empty
> return statements.
>
> patch-ironpython-oldstyle-setattr
> This patch fixes an issue that __setattr__ wasn't called for old-style
> classes.
>
> patch-ironpython-os-utime
> This patch fixes an issue that os.utime didn't set modified time and
> set access time wrong.
>
> patch-ironpython-re-backslash-escape
> This patch fixes an issue that backslash escape \\ wasn't properly
> handled in regular expression.
>
> --
> Seo Sanghyeon
> _______________________________________________
> users mailing list
> users at lists.ironpython.com
> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>



-- 
/M:D

M. David Peterson
http://mdavid.name | http://www.oreillynet.com/pub/au/2354
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From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep  7 06:55:20 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 7 Sep 2006 12:55:20 +0200
Subject: sending emails using python
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
Message-ID: <slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>

Tim Williams enlightened us with:
> Can you send email via it using outlook express or a similar
> POP3/IMAP mail client?

Wouldn't you use a SMTP client to send email?

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From steve at holdenweb.com  Sat Sep 30 14:51:09 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 19:51:09 +0100
Subject: Escapeism
In-Reply-To: <1159635727.840033.169540@m73g2000cwd.googlegroups.com>
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>	<slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>
	<1159635727.840033.169540@m73g2000cwd.googlegroups.com>
Message-ID: <efmaoo$7tf$2@sea.gmane.org>

Kay Schluehr wrote:
> Sybren Stuvel wrote:
> 
>>Kay Schluehr enlightened us with:
>>
>>>Usually I struggle a short while with \ and either succeed or give up.
>>>Today I'm in a different mood and don't give up. So here is my
>>>question:
>>>
>>>You have an unknown character string c such as '\n' , '\a' , '\7' etc.
>>>
>>>How do you echo them using print?
>>>
>>>print_str( c ) prints representation '\a' to stdout for c = '\a'
>>>print_str( c ) prints representation '\n' for c = '\n'
>>>...
>>>
>>>It is required that not a beep or a linebreak shall be printed.
>>
>>try "print repr(c)".
> 
> 
> This yields the hexadecimal representation of the ASCII character and
> does not simply echo the keystrokes '\' and 'a' for '\a' ignoring the
> escape semantics. One way to achieve this naturally is by prefixing
> '\a' with r where r'\a' indicates a "raw" string. But unfortunately
> "rawrification" applies only to string literals and not to string
> objects ( such as c ). I consider creating a table consisting of pairs
> {'\0': r'\0','\1': r'\1',...}  i.e. a handcrafted mapping but maybe
> I've overlooked some simple function or trick that does the same for
> me.
> 
No, you've overlooked the fact that if you print the string containing 
the two characters "backslash" and "lower case a" then it will print 
exactly those two characters. See:

In [30]: c = "\\a"

In [31]: len(c)
Out[31]: 2

In [32]: print c
\a

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Sat Sep 30 17:28:22 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 30 Sep 2006 21:28:22 GMT
Subject: loop over list and modify in place
In-Reply-To: <1159650480.454796.259190@i3g2000cwc.googlegroups.com>
References: <mailman.1006.1159638327.10491.python-list@python.org>
	<1vzTg.7077$GR.670@newssvr29.news.prodigy.net>
	<1159650480.454796.259190@i3g2000cwc.googlegroups.com>
Message-ID: <WjBTg.7562$vJ2.2646@newssvr12.news.prodigy.com>

John Machin wrote:
> James Stroud wrote:
> 
>>Daniel Nogradi wrote:
>>
>>>Is looping over a list of objects and modifying (adding an attribute
>>>to) each item only possible like this?
>>>
>>>mylist = [ obj1, obj2, obj3 ]
>>>
>>>for i in xrange( len( mylist ) ):
>>>   mylist[i].newattribute = 'new value'
>>>
>>>
>>>I'm guessing there is a way to do this without introducing the (in
>>>principle unnecessary) index i, so what I'm really looking for is a
>>>looping method which doesn't pass references to the values of the
>>>items but to the items themselves.
>>
>>You can use map, or if you don't map, like list comprehension:
>>
> 
> 
> Call me crazy, but isn't the simple construct
>     for obj in mylist:
>         obj.newattribute = 'new value'
> what the OP was looking for?
> 

I thought he wanted a one liner.


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From bearophileHUGS at lycos.com  Fri Sep  8 20:15:46 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 Sep 2006 17:15:46 -0700
Subject: convert loop to list comprehension
In-Reply-To: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
Message-ID: <1157760946.227349.99390@m73g2000cwd.googlegroups.com>

Two possibile solutions:

seq = [2, 3, 1, 9]

print sum( ([i]*n for i,n in enumerate(seq)), [])

print [i for i, x in enumerate(seq) for _ in xrange(x)]

The second one is probably quite faster.

Bye,
bearophile



From aisaac0 at verizon.net  Tue Sep 12 22:11:41 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Wed, 13 Sep 2006 02:11:41 GMT
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <xNJNg.48452$Qb2.44371@trnddc08>

Thanks to all for the suggestions and much else
to think about.

Summarizing:

Those who were willing to consider a database suggested:
anydbm
Gadfly
SQLite (included with Python 2.5)
Schevo

Some preferred using the file system.
The core suggestion was to choose a directory structure
along with special naming conventions to indicate relationships.
Not all who suggested this said how to store info about the files.
One suggestion was:
   Store the info in a text file and read the
   entire file into memory and do linear searches.  Python can search
  100's of items in a list faster than you can even begin an SQL query.

Alan Isaac




From bearophileHUGS at lycos.com  Sun Sep  3 09:50:28 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 3 Sep 2006 06:50:28 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <1157241169.675904.204630@b28g2000cwb.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
	<edaf0s$oc3$1@newsreader2.netcologne.de>
	<1157241169.675904.204630@b28g2000cwb.googlegroups.com>
Message-ID: <1157291427.953079.141940@i42g2000cwa.googlegroups.com>

Patrick Thomson:
> After all, GvR said that
> "wxPython is the best and most mature cross-platform GUI toolkit,
> given a number of constraints. The only reason wxPython isn't the
> standard Python GUI toolkit is that Tkinter was there first."
>
> The Wax toolkit (http://zephyrfalcon.org/labs/wax.html) attempts to
> solve the problems inherent with wxPython and make it more pythonic.

Wax is quite nice. A complete and improved (made even simpler and
cleaner, copying other ideas from Tkinter too) Wax may be good to
replace/mount side by side Tkinter in future (3.0?) Python
distributions. Often it's a work of designing easy to use APIs.

Bye,
bearophile



From stephane_bard at tele2.fr  Thu Sep 21 16:51:14 2006
From: stephane_bard at tele2.fr (=?ISO-8859-1?Q?st=E9phane_bard?=)
Date: Thu, 21 Sep 2006 22:51:14 +0200
Subject: parsing java files
Message-ID: <vXCQg.233$HX5.50@nntpserver.swip.net>

hello
i would like to parse java files an detect
class name's, attributes name's type's and visibility (and or list of 
methods).

is there any module who can parse easily a java file without using
(jython)?


From http  Sun Sep 17 03:55:09 2006
From: http (Paul Rubin)
Date: 17 Sep 2006 00:55:09 -0700
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
	<mailman.405.1158107055.5279.python-list@python.org>
Message-ID: <7x4pv753mq.fsf@ruckus.brouhaha.com>

"Ramon Diaz-Uriarte" <rdiaz02 at gmail.com> writes:
> You might also want to check
> http://www.lindaspaces.com/products/NWS_overview.html
> by the guys who "invented" Linda.

Cool, I guess.

> (The Oz language/Mozart system is a good example of a different and
> very neat approach to concurrency; somewhat similar Python solutions
> can be found at Kamaelia and Candygram. Links and other stuff at:

I looked at these.  Oz/Mozart is a whole nother language, worth
examining for its ideas, but the implementation is quite slow.
Kamaelia doesn't attempt concurrency at all.  Its main idea is to use
generators to simulate microthreads.  Candygram is a module that lets
you write code in Python that's sort of like Erlang code, but it uses
OS threads for the equivalent of Erlang processes.  That misses the
point of Erlang pretty badly, which is that processes are extremely
lightweight (i.e. normally they are microthreads) so you can have
millions of them active simultaneously (e.g. one for each active
telephone connected to a big phone switch).  

Right now I want to check out GHCI (the Glasgow Haskell compiler),
which may be the closest thing to a "winner":

  - very advanced language, even higher level than Python, once described
    by somebody as "what Python should have become"
  - native code compilation
  - lock-free concurrency using software transactional memory (STM)

The GHCI concurrency stuff is not yet really complete (e.g. the GC
still stops the world) but there is already a good speedup with
multiple processors, and the STM approach experimentally outperforms
the usual locking approach, in addition to being much less bug-prone:

  http://lambda-the-ultimate.org/node/463
  http://research.microsoft.com/users/simonpj/papers/stm/

This approach might also be of some use in PyPy.


From fredrik at pythonware.com  Fri Sep  1 06:20:26 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 12:20:26 +0200
Subject: raw audio in windows
References: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
	<1157105585.717096.99690@m73g2000cwd.googlegroups.com>
Message-ID: <ed91ha$ssi$1@sea.gmane.org>

Ben Sizer wrote:

> Not really. You'll have to convert it to .wav and then pass it to a
> helper app.
>
> <http://www.microsoft.com/technet/scriptcenter/resources/qanda/nov04/hey1103.mspx>

>>> import winsound
>>> help(winsound)
Help on module winsound:

NAME
    winsound

FILE
    c:\python24\dlls\winsound.pyd

DESCRIPTION
    PlaySound(sound, flags) - play a sound
    SND_FILENAME - sound is a wav file name
    SND_ALIAS - sound is a registry sound association name
    SND_LOOP - Play the sound repeatedly; must also specify SND_ASYNC
    SND_MEMORY - sound is a memory image of a wav file
    SND_PURGE - stop all instances of the specified sound
    SND_ASYNC - PlaySound returns immediately
    SND_NODEFAULT - Do not play a default beep if the sound can not be found
    SND_NOSTOP - Do not interrupt any sounds currently playing
    SND_NOWAIT - Return immediately if the sound driver is busy

    Beep(frequency, duration) - Make a beep through the PC speaker.

FUNCTIONS
    Beep(...)
        Beep(frequency, duration) - a wrapper around the Windows Beep API

        The frequency argument specifies frequency, in hertz, of the sound.
        This parameter must be in the range 37 through 32,767.
        The duration argument specifies the number of milliseconds.
        On WinNT and 2000, the platform Beep API is used directly.  Else funky
        code doing direct port manipulation is used; it's unknown whether that
        will work on all systems.

    MessageBeep(...)
        MessageBeep(x) - call Windows MessageBeep(x). x defaults to MB_OK.

    PlaySound(...)
        PlaySound(sound, flags) - a wrapper around the Windows PlaySound API

        The sound argument can be a filename, data, or None.
        For flag values, ored together, see module documentation.

DATA
    MB_ICONASTERISK = 64L
    MB_ICONEXCLAMATION = 48L
    MB_ICONHAND = 16L
    MB_ICONQUESTION = 32L
    MB_OK = 0L
    SND_ALIAS = 65536L
    SND_APPLICATION = 128L
    SND_ASYNC = 1L
    SND_FILENAME = 131072L
    SND_LOOP = 8L
    SND_MEMORY = 4L
    SND_NODEFAULT = 2L
    SND_NOSTOP = 16L
    SND_NOWAIT = 8192L
    SND_PURGE = 64L

</F> 





From ldo at geek-central.gen.new_zealand  Mon Sep 25 03:46:40 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 19:46:40 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ef81f6$rej$3@lust.ihug.co.nz>

In message <slrnehf19i.ejf.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Lawrence D'Oliveiro enlightened us with:
>>         "select * from details where person_name like"
>>         " concat(\"%%\", %s, \"%%\")" \
>>     % \
>>         QuoteSQL(name, True)
> 
> Wouldn't this be a whole lot better?
> 
> cursor.execute(
>     "select * from details where person_name like ?",
>     '%' + name + '%'
> )

No. Can you figure out why?


From vasudevram at gmail.com  Fri Sep 29 07:12:08 2006
From: vasudevram at gmail.com (vasudevram)
Date: 29 Sep 2006 04:12:08 -0700
Subject: Generating a PDF file on Linux (try using xtopdf)
References: <effjqc014pt@enews3.newsguy.com>
Message-ID: <1159528327.949348.25930@m7g2000cwm.googlegroups.com>


George Adams wrote:
> Sorry for what is probably a very basic question...
>
> I have a database of contact info data (names, addresses, phone, etc.)
> I want to take that data and generate a printable booklet-form directory
> that can be handed out to people.
>
> So the database may look something like this:
>
>    FNAME,LNAME,ADDRESS,HOMEPHONE,WORKPHONE,HOMEEMAIL,WORKEMAIL
>
>    "George","Adams","123 Faketreet",
>    NULL,"555-1212",NULL,"george at example.net"
>
>    "John","Doe","456 Nowhere Lane",
>    "555-1111","555-2222","johnhome at example.net","johnwork at example.net"
>
>
> and I want the printable output to "look" something like this:
>
>    <red><bold>Adams</bold></red>, George
>    123 Fake Street
>    Work phone: 555-1212
>    Work e-mail: george at example.net
>
>    <red><bold>Doe</bold></red>, John
>    456 Nowhere Lane
>    Home phone: 555-1111
>    Work phone: 555-2222
>    Home e-mail: johnhome at example.net
>    Work e-mail: johnwork at example.net
>
> I can use a scripting language like Perl to handle any programming logic
> I may need (such as not printing out a line for any fields that are
> empty in the database).  What I don't know is how to generate a nicely
> formatted PDF file containing the line breaks, red text, bold text, etc.
> that's ready for printing.
>
> Can anyone point me to the tool I need to make this happen?  (maybe it's
> a Perl module?  Maybe a standalone tool that takes my pseudocode
> <red><bold> and turns it into valid PDF code?)
>
> Thanks to anyone who can help!

My xtopdf toolkit may be of help. It has both end-user tools (some
command-line, some GUI (using wxPython (v 2.6 or higher needed)), and
an API for developers. Both the tools and the API are quite easy to
use.

Check the links here:

http://www.dancingbison.com
This page has a link to an article I wrote for Packt Publishing
(http://www.packtpub.com), on how to use xtopdf to generate PDF from
CSV data - which is the kind you have. You can use the article and the
accompanying code (links available in the article) as a model for your
needs.

http://www.dancingbison.com/products.html
This page has links to get xtopdf, a guide to installing and using it
(on Windows), etc.
xtopdf is cross-platform, works on both Linux and Windows. I haven't
yet written a Linux-specific install and use guide, but the generic
instructions in the README should suffice if you know Linux some, how
to install software on it, and how to set up additional Python
libraries on it. You can also post here if you have problems making
xtopdf work on Linux, and I'll try to help. (I developed and tested it
on Linux, then tested it on Windows, so it should work ok on Linux).

xtopdf is written in Python (http://www.python.org, needs v2.2 or
higher) and uses the open source version of the ReportLab toolkit
(http://www.reportlab.org, needs v1.17 or higher, but use the 1.x
series, its not tested with Reportlab v2.x, though it might work with
it).

IMO, Python is easier to learn and develop in than Perl, so if you say
you can do it in Perl, you should be able to do it in Python.

To get the line breaks you can write code to read each cell of each row
of the CSV file, and put the line breaks wherever you want to.

For color changes, its a little more difficult - though the ReportLab
toolkit supports colors, I didn't expose that support in the xtopdf
API, though I may in future. (I did expose the ability to set the font
for any chunk of text, though). If you don't mind digging into the
source, you can try making the changes to allow colors to be specified
for arbitrary chunks of text, as per your need. It shouldn't be too
difficult, since the code is written for understandability, and there
are enough comments.

The CSV and other new formats support (TDV, XLS) is alpha and may have
some bugs. Also, CSV is know to be a variable format - different
products like different spreadsheets, generate various "dialects" of
it. I've not (yet) tested the CSV support with many differing CSV
dialects, only with the MS Excel format of Office 2000.

Feel free to let me know if you find any bugs.

If you make the changes for color support, do consider sending them to
me, to include in the next release of xtopdf. Otherwise, I'll probably
add it myself.

HTH
Vasudev Ram
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Software training and consulting
http://www.dancingbison.com
10.times say "Truly rural"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~



From steve at holdenweb.com  Fri Sep 22 08:41:41 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 08:41:41 -0400
Subject: send with timeout socket
In-Reply-To: <Xns984679EF2DA0Fstefninalussinanorg@212.27.42.133>
References: <Xns984679EF2DA0Fstefninalussinanorg@212.27.42.133>
Message-ID: <ef0lkm$317$1@sea.gmane.org>

St?phane Ninin wrote:
>   Hello,
> 
> I have a few questions regarding sockets with timeouts.
> 
> Assuming you set a timeout t on a socket s and then call:
> 
> 
> 1) s.sendall
> Is the socket.timeout exception thrown when
> not the data was sent in the given time t 
> or if nothing was sent ?
> 
> 2) Similar question for s.send:
> Is the socket.timeout exception thrown when 
> nothing was sent or ... ?
> 
> 
>   What I am actually trying to do is this:
> 
> I have a thread which uses a socket to communicate with a socket server,
> the socket sends data to the server, but it shouldnot block on the send,
> so I want to do something like this:
> 
>     def sendall(self,data):
>         while data:
>             n = self.send(data)
>             data = data[n:]
>     	    	 try:
>                self.request.send(data)
>             except socket.timeout, e:
>                if self.isTerminated():
>                   return
> 
> but I am not sure this would work the way I want.
> 
It wouldn't even compile, as your indentation is shot.

Plus, if the first send attempt (the one before the try) sends all the 
data you then try to send an empty string, which seems a little weird: I 
don't see the point of the try/except.

> (self.isTerminated just checks is some event 
> has been set by another thread)
> 
> 
>  Thanks for comments/suggestions/answers,
> 
>  
Sending sockets will usually only block when the sliding window is full 
(the sender has sent as much data as the remote receiver has indicated 
it can safely receive without loss) and no acknowledgment has been 
received from the remote receiver.

Rather than a timeout it would seem sensible, if you don't want the 
sending socket to block, to use a non-blocking socket. That way you get 
a socket.error if a send would otherwise block.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From wahab at chemie.uni-halle.de  Sat Sep 30 15:02:29 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Sat, 30 Sep 2006 21:02:29 +0200
Subject: builtin regular expressions?
In-Reply-To: <87psddwajs.fsf@gmail.com>
References: <451e37a5$1@news.vo.lu>
	<87k63ly1gi.fsf@gmail.com>	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de>
	<877izlxsiy.fsf@gmail.com>	<efm4se$mm2$1@mlucom4.urz.uni-halle.de>
	<87psddwajs.fsf@gmail.com>
Message-ID: <efmf90$phn$1@mlucom4.urz.uni-halle.de>

Thus spoke Jorge Godoy (on 2006-09-30 19:04):
> Mirco Wahab <wahab at chemie.uni-halle.de> writes:
>>   sub print_message {
>>      if   (/^track="(.+?)"/ ){ print "Your track is $1\n" }
>>      ...
> 
> Specially the non-greedy part. :-) I don't believe that non-greedyness would
> be adequate here since I believe he's willing to process the whole line.

Ohh, but I think it really is, my intention was
to get the quotet text out of the quotes, if
there is any, eg.:


   sub print_message {
      if   (/^track="(.+?)"/ ){ print "Your track is $1\n" }
      ...
   }

   print_message for 'track="My favorite track"', 'title="My favorite song"',
                     'artist="Those Dudes"', 'Something else' ;

(... our quoting chars are just inverted.)

> $line = "track='My favorite track'";
> if ($line =~ /^track=(.+?)/) { print "My track is $1\n"};
> 
> outputs
> My track is '

Of course, you can't have the nongreedy thing
without a following item, in the case mentioned,
a second \" (which would have been consumed
in the 'greedy' mode).

> and what I'd use
> 
> $line = "track='My favorite track'";
> if ($line =~ /^track=(.*)/) { print "My track is $1\n"};

OK, but to pull the quoted text alone, you'd
need the non-greedy thing, as in

   ...
   if   ( /^track='(.+?)'/ ){ print "Your track is $1\n" }
   ...

Alternatively, you could use the negated character class
for that:

  if   ( /^track='([^']+)/ ){ print "Your track is $1\n" }

which has exactly the same character count (so taste matters here) ...

Regards

Mirco


From sjmachin at lexicon.net  Sun Sep 24 18:46:37 2006
From: sjmachin at lexicon.net (John Machin)
Date: 24 Sep 2006 15:46:37 -0700
Subject: ruby %w equivalent
In-Reply-To: <1159137314.180160.205010@h48g2000cwc.googlegroups.com>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137314.180160.205010@h48g2000cwc.googlegroups.com>
Message-ID: <1159137997.511213.261680@h48g2000cwc.googlegroups.com>


p.lavarre at ieee.org wrote:
>
> Also Google was curiously resistant to telling me where Ruby's %w is
> documented.
>

You would need to dig into your Google toolbar config and un-tick
"YAGNI filter".



From timr at probo.com  Mon Sep  4 20:24:43 2006
From: timr at probo.com (Tim Roberts)
Date: Tue, 05 Sep 2006 00:24:43 GMT
Subject: upgrade 2.4 -> 2.5 HowTo
References: <44fbdd29$0$28386$ba620e4c@news.skynet.be>
Message-ID: <3sgpf29md4hafjeu9s0q0sjc53ssa98t4o@4ax.com>

Helmut Jarausch <jarausch at skynet.be> wrote:
>
>what has to be done for upgrading from Python 2.4 to 2.5?
>
>- How can I find out which packages (in addition to the core packages) have been
>   installed up to now
>- Can I just copy   /usr/local/lib/python2.4/site-packages  to
>                     /usr/local/lib/python2.5 ?

I've started keeping the tarballs for all of the packages I install in a
single directory, along with a shell script to install each of them.  It
makes upgrading much easier.  I do this on both Linux and Windows.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From kay.schluehr at gmx.net  Mon Sep 11 06:14:36 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 11 Sep 2006 03:14:36 -0700
Subject: RuPy 2007 - Python & Ruby Conference
In-Reply-To: <ee36ti$s14$1@wake.carmen.se>
References: <slrnefqkvu.os3.fname.sname.lname@atos.wmid.amu.edu.pl>
	<ee36ti$s14$1@wake.carmen.se>
Message-ID: <1157969676.834983.24260@m73g2000cwd.googlegroups.com>


Magnus Lycka wrote:
> Jakub Piotr Nowak wrote:
> > RuPy 2007
> > Python & Ruby Conference
> >
> > Poznan, Poland
> > April 7-8, 2007
>
> Are you aware of the EuroPython Conference which
> will take place in Vilnius three months later?

If I understand the intention right its kind of a peace pipe
cross-community conference. This is somewhat uncommon these days
regarding language community tribalism. So what to do if one has to
polite to each other? As a joint enemy Java might be appropriate?



From steve at holdenweb.com  Thu Sep 21 12:20:34 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 21 Sep 2006 12:20:34 -0400
Subject: access to xml_rpc server problem
In-Reply-To: <454FD769B559DD4BAC93B2CCA7BEBDBE0121CD99@namail2.corp.adobe.com>
References: <qhfyemb5oa.fsf@ruckus.brouhaha.com>
	<454FD769B559DD4BAC93B2CCA7BEBDBE0121CD99@namail2.corp.adobe.com>
Message-ID: <eeue31$4oa$2@sea.gmane.org>

Ted Zeng wrote:
> HI,
> 
> I run a xml_rpc server like the following:(sample code from internet)
> 
> server = SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost", 8000))
> server.serve_forever()
> 
> If my client is on the same machine, I use :(also from internet sample
> code)
> 
> server = xmlrpclib.Server('http://localhost:8000')
> print server.chop_in_half('I am a confidant guy')
> 
> This works fine.
> 
> But if I use server's ip address instead of localhost in the client,
> then it could not access the server.
> 
> server = xmlrpclib.Server('http://machine_ip_address:8000')
> print server.chop_in_half('I am a confidant guy')
> 
> 
> How can my client (runs on other machine) access the server? The server
> runs on a machine with dynamic IP. But my client knows the IP address.
>  

You are explicitly telling your server ONLY to listen on the loopback 
interface. Try using an empty string as IP address instead:

server = SimpleXMLRPCServer.SimpleXMLRPCServer(("", 8000))

That will tell it to listen on all interfaces:

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From MonkeeSage at gmail.com  Sun Sep 24 07:33:49 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 24 Sep 2006 04:33:49 -0700
Subject: grabbing random words
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
	<1159076894.181674.59640@k70g2000cwa.googlegroups.com>
Message-ID: <1159097629.021487.281290@e3g2000cwe.googlegroups.com>

Steven D'Aprano wrote:
> That isn't 5.75e30 words, it is the number of possible haikus. There
> aren't that many words in all human languages combined.

Doh! This is why _I'm_ not a computer scientist. I'm kinda slow. ;)

> (Note however that there are languages like Finnish which allow you to
> stick together words into a single "word" of indefinite length, sort of as
> if we could say in English "therearelanguageswhichallowyou" to
> "sticktogetherwordsintoasinglewordofindefinitelength". Such languages
> might be said to have an infinite number of words, in some sense.)

Imagine an agglutinating (sp?) programming language, heh!

Regards,
Jordan



From kent at kentsjohnson.com  Sat Sep 30 17:04:41 2006
From: kent at kentsjohnson.com (Kent Johnson)
Date: Sat, 30 Sep 2006 21:04:41 GMT
Subject: preemptive OOP?
In-Reply-To: <e9USg.47$1n3.432@news.tufts.edu>
References: <e9USg.47$1n3.432@news.tufts.edu>
Message-ID: <JZATg.3537$5i7.15@newsreading01.news.tds.net>

John Salerno wrote:
> So my question in general is, is it a good idea to default to an OOP 
> design like my second example when you aren't even sure you will need 
> it? I know it won't hurt, and is probably smart to do sometimes, but 
> maybe it also just adds unnecessary code to the program.

In general, no. I'm a strong believer in You Aren't Going to Need It 
(YAGNI):
http://c2.com/xp/YouArentGonnaNeedIt.html

because it *does* hurt
- you have to write the code in the first place
- every time you see a reference to MyNotebook you have to remind 
yourself that it's just a wx.Notebook
- anyone else looking at the code has to figure out that MyNotebook is 
just wx.Notebook, and then wonder if they are missing something subtle 
because you must have had a reason to create a new class...

and so on...Putting in extra complexity because you think you will need 
it later leads to code bloat. It's usually a bad idea.

Possible exceptions are
- If you are really, really, really sure you are going to need it 
really, really soon and it would be much, much easier to add it now then 
after the next three features go in, then you might consider adding it 
now. But are you really that good at predicting the future?
- When you are working in a domain that you are very familiar with and 
the last six times you did this job, you needed this code, and you have 
no reason to think this time is any different.

You struck a nerve here, I have seen so clearly at work the difference 
between projects that practice YAGNI and those that are designed to meet 
any possible contingency. It's the difference between running with 
running shoes on or wet, muddy boots.

Kent


From g.brandl-nospam at gmx.net  Fri Sep  8 03:51:29 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Fri, 08 Sep 2006 09:51:29 +0200
Subject: the first arg to super() must be a type, not a class obj?
In-Reply-To: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>
References: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>
Message-ID: <edr7e2$g0u$1@news.albasani.net>

metaperl wrote:
> On p.282 of "Python Cookbook" and in the Python docs on calling super:
> http://www.python.org/download/releases/2.2.3/descrintro/#cooperation
> 
> it is clear that the first argument to super is a class and not a type.
> However, for the code below, I am getting an error when attempting to
> provide a class as my first argument and don't understand why. Also,
> since this is my first attempt at writing anything of any seriousness
> in Python, any other feedback is welcome.

"super" only works for new-style classes.

You could make "ftputilx" new-style by inheriting from object and FTPHost,
but FTPHost is still old-style, and I don't know if that's okay with super.

So in your case it would be advisable to use

FTPHost.__init__(self)

instead of

super(ftputilx, self).__init__()

Georg


From faulkner612 at comcast.net  Fri Sep 22 20:24:26 2006
From: faulkner612 at comcast.net (faulkner)
Date: 22 Sep 2006 17:24:26 -0700
Subject: Best practice for large source code projects
In-Reply-To: <1158963611.189319.148700@i42g2000cwa.googlegroups.com>
References: <1158963611.189319.148700@i42g2000cwa.googlegroups.com>
Message-ID: <1158971066.174259.89340@i3g2000cwc.googlegroups.com>

several of my programs are thousands of lines long, and i don't think
they're extravagantly large.
i'd say you should use modules the same way you use classes and
functions: to separate code logically.
if it makes sense to think of a group of statements as a function, you
make it a function. if it makes sense to think of a group of functions
as data as a single object, you make a class. if it makes sense to
think of a collection of classes and functions and data as a collective
unit, make a module. and so on for packages.
if it makes sense for a single function to be hundreds or thousands of
lines long, so be it.
follow the modern poet's rule: ignore restrictions that don't make
sense, and follow closely the restrictions you choose.


dhable at gmail.com wrote:
> I'm developing a web system and based on some patterns I've seen
> elsewhere, I made a single  file (model.py) to hold all of the
> functions and classes that define the model porition of the
> application. Hence the code in the controller looks like:
>
> import model
>
> def Display(req,id):
>   # ....
>
>
> It works and things make sense to me. Yet, I feel uneasy that my
> model.py file is starting to approach 500 lines. What's the best
> practice or community opinion on this? Do I keep everything in a single
> file or do I start dividing things into separate files?
> 
> TIA



From steve at holdenweb.com  Wed Sep  6 03:56:38 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:56:38 +0100
Subject: any portable way to print? (and i mean on a printer)
In-Reply-To: <93fc17a50609051509k50fdb2f2j4aefcf4e69a8f4c8@mail.gmail.com>
References: <93fc17a50609051509k50fdb2f2j4aefcf4e69a8f4c8@mail.gmail.com>
Message-ID: <edluuj$t24$2@sea.gmane.org>

Liquid Snake wrote:
> I think my question is clear.., is there any way to print any text on a 
> portable way?..., and actually, i don't know how to print at all.., just 
> give me some pointers, name a module, and i can investigate for myself.. 
> sorry for my english, thanks in advance..
> ps: i prefer a Standard Library module.
> 
No, there is no way to print any text (did yo also want to print 
graphics?) portably (by which I mean a way that will work on Windows, 
Linux, Solaris, HP-UX, AIX, ...).

Sorry. This answer is final.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From claird at lairds.us  Fri Sep 22 18:17:05 2006
From: claird at lairds.us (Cameron Laird)
Date: Fri, 22 Sep 2006 22:17:05 +0000
Subject: Don't use regular expressions to "validate" email addresses (was:
	Ineed some help with a regexp please)
References: <mailman.434.1158888340.10491.python-list@python.org>
	<4513a64a$0$905$636a55ce@news.free.fr>
	<4513d40c$0$75029$14726298@news.sunsite.dk>
Message-ID: <104eu3-ln4.ln1@lairds.us>

In article <4513d40c$0$75029$14726298 at news.sunsite.dk>,
Damjan  <gdamjan at gmail.com> wrote:
>>> you'd create something to allow anyone to
>>> potentially spam the hell out of a system...
>> 
>> I'm sorry, but I fail to see how validating (or not) an email address
>> could prevent using a webmail form for spamming. Care to elaborate ?
>
>The best way would be to implement some limiting features. Try two times
>from the same IP address in less than 10 minutes and you are banned for the
>day. Or some such.
			.
			.
			.
I'm having a lot of trouble imagining the problem this
fixes.  I certainly deal with plenty of spam that would
continue to flow even were this proposal to be implemented.


From ironfroggy at gmail.com  Fri Sep 15 03:50:48 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Fri, 15 Sep 2006 03:50:48 -0400
Subject: Check if variable is an instance of a File object
In-Reply-To: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
Message-ID: <76fd5acf0609150050l47150823off6b1f5e065cb091@mail.gmail.com>

On 15 Sep 2006 00:18:14 -0700, sc_wizard29 at hotmail.com
<sc_wizard29 at hotmail.com> wrote:
> Hi everyone,
>
> Maybe these questions will sound strange to you, but I sometime have a
> hard time switching from Java to Python ;-)
>
> Let's say I have a function like this :
>
> def show_lines(file):
>         for next_line in file:
>                 ...
>
> What can I do to be sure that the input argument is indeed a 'File'
> object ?
>
> #1 : should I start by checking that 'file' is indeed an instance of a
> File object ? (and how do I do this ?)
> #2 : should I do nothing ? (but I don't like the idea of risking to
> have a runtime exception raised somewhere)
>
> Thanks for helping...
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

Do nothing!

The caller might pass you a file-like object, and you can never be
exactly sure. Duck typing rules in this case. If what they pass acts
like a file, then it must be a file (for as much as the function needs
to care, anyway). Don't want to risk an exception at runtime? Well,
isn't that what you would do if you explicitly checked for a file
object and had something else, anyway? Just assume its a file and if
there is an error it should propogate because one of the callers
messed up and should know that.


From jstroud at mbi.ucla.edu  Fri Sep  8 16:33:50 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 08 Sep 2006 20:33:50 GMT
Subject: Building Python Based Web Application
Message-ID: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>

Hello All,

I am interested in setting up a modest invoicing system for some 
consulting I am doing. I like the idea of managing this on the web and 
creating invoices and printing them from a browser. However, I'm not 
really sure where to start. I've played with some CMS applications, but 
they seem more for blogging (mamba, wordpress, etc.). Ideally, I would 
like to interface with mySQL (or whatever the favorite web-flavor 
database app is these days). I would like to be able to use my python 
skills.

I confident that if I set out to write this from scatch, I will be 
seriously re-inventing the wheel, perhaps several times over.

So, my question is, does anyone know of a book and/or some kind of 
framework that would make the best sense for what I am describing here? 
I've heard of Zope, but I would like to make sure its appropriate for 
the job before I spend 2 or 3 days getting acquainted with it. I'm adept 
at HTML, python, CSS, python-CGI, and interfacing with mySQL through 
DBI. I'm sure I could get something to work with these skills, but I 
want to minimize wheel re-invention as much as possible.

Basically, I want a jump start on data-base oriented web development 
with a focus on applying my python skills.

Any suggestions will be greatly appreciated.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From steve at holdenweb.com  Fri Sep  8 04:12:50 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 09:12:50 +0100
Subject: Negation in regular expressions
In-Reply-To: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
References: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
Message-ID: <edr8ks$v3g$2@sea.gmane.org>

George Sakkis wrote:
> It's always striked me as odd that you can express negation of a single
> character in regexps, but not any more complex expression. Is there a
> general way around this shortcoming ? Here's an example to illustrate a
> use case:
> 
> 
>>>>import re
> 
> # split with '@' as delimiter
> 
>>>>[g.group() for g in re.finditer('[^@]+', 'This @ is a @ test ')]
> 
> ['This ', ' is a ', ' test ']
> 
> Is it possible to use finditer to split the string if the delimiter was
> more than one char long (say 'XYZ') ? [yes, I'm aware of re.split, but
> that's not the point; this is just an example. Besides re.split returns
> a list, not an iterator]
> 
I think you are looking for "negative lookahead assertions". See the docs.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From antroy at gmail.com  Fri Sep  8 11:55:28 2006
From: antroy at gmail.com (Ant)
Date: 8 Sep 2006 08:55:28 -0700
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
Message-ID: <1157730928.319166.149900@b28g2000cwb.googlegroups.com>


vbfoobar at gmail.com wrote:
> Hello
>
> I am looking for python code that takes as input a list of strings
> (most similar,
> but not necessarily, and rather short: say not longer than 50 chars)
> and that computes and outputs the python regular expression that
> matches
> these string values (not necessarily strictly, perhaps the code is able
> to determine
> patterns, i.e. families of strings...).
>
> Thanks for any idea

def getRegex(list_of_strings):
   return ".*"

;-)



From rrajal at gmail.com  Mon Sep 18 12:50:37 2006
From: rrajal at gmail.com (Rrajal)
Date: 18 Sep 2006 09:50:37 -0700
Subject: Help
Message-ID: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>

Hi there, I am new in this subject so could you please tell me from
where I can get help (or good e-book) of python?



From grahn+nntp at snipabacken.dyndns.org  Sat Sep  2 14:09:32 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 2 Sep 2006 18:09:32 GMT
Subject: Adding sender name to email
References: <G51204832.381.112.1@mx-extra>
	<mailman.10245.1157107921.27775.python-list@python.org>
Message-ID: <slrnefjcdk.3bp.grahn+nntp@frailea.sa.invalid>

On Fri, 1 Sep 2006 11:51:55 +0100, Tim Williams <tim at tdw.net> wrote:
...
> The smtp sender & recipients do not relate to the sender & recipients
> in the email itself,  Often they are the same, but they don't have to
> be.

To complicate things a bit more, using the term "sender" can invite
confusion. There's a rarely-used "Sender" header for things like "Alice
(sender) sent this message on behalf of Bob (from)". You're talking about
the "From" header and SMTP MAIL FROM.

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From dbraden at invalid.add  Thu Sep 14 23:33:18 2006
From: dbraden at invalid.add (David J. Braden)
Date: Fri, 15 Sep 2006 03:33:18 GMT
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.74.1158226021.10491.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>	<mailman.48.1158174903.10491.python-list@python.org>	<1158183392.526021.212220@d34g2000cwd.googlegroups.com>	<Y94Og.938$TV3.21@newssvr21.news.prodigy.com>
	<mailman.74.1158226021.10491.python-list@python.org>
Message-ID: <2apOg.1348$6S3.655@newssvr25.news.prodigy.net>

Wildemar Wildenburger wrote:
>> Hi Stu und "Willie",
>>
<<snip>>
> 
>> I don't yet know what jython is about, or for, but I'm up for trying
>  > jedit for python.
> jython is an implementation of python in java (hence the name ;)). That 
> means it's a python interpreter inside a java virtual machine (groan). 
> It basically lets you write java apps in python syntax. It's currently 
> at python 2.1 I believe.
> jEdit is extensible though java, and with the jython plugin also through 
> python.

Thanks. That helps me get a sense of the landscape.
> 
>> Which plugins give me a good start for scientific stuff?
> Er ... I don't know. What do you mean by 'scientific stuff'?

I've come to sense, in the last (many) threads and topics brought up 
that I have read in the last 3 weeks, that this NG attracts folks who 
are very much into the web-app interface potential and usefulness of 
Python, as you yourself seem to be (see following), and others, such as 
I, who appreciate its power for technical apps, such as hard-core stats, 
optimization, and integration with even more sophisticated off-the-shelf 
apps, as well as home-brewed stuff, hopefully even original algorithms. 
  I have seen, several times in this NG, references to "scientific 
stuff". I take it to mean apps meant for, or used by, folks in 
engineering, physics, applied mathematics, exploratory theoretical stats 
and practical applied stats (at a very high level) --- these users have 
PhDs in areas dealing with "scientific stuff". What's *your* view take 
on this?

> You might want to look at python packages such as scipy (?) or numpy 
> (for numerical calculations) or whatever those are called.

"Whatever those ..." ?!? Maybe this clarifies my response.

  I think you
> can hook up python to Matlab, Scilab or Mathematica, but don't take my 
> word for it. I don't use any of this, so I cannot really tell you more.
> None of this is jEdit specific though. Can you clarify?

Thanks. I hope to very soon. Potential interactions with other APIs are 
keeping me up nights. I could use your help on one of these in the near 
future.
> 
>> I am not interested in Web/html apps.
> Too bad, that's the future ;).

For whom?!? When? Been to a so-called 3rd-world country for an extended 
period yet? Think Angola, Chad, ...
> 
>> And is there an IDE out there that lets us create GUI dialogs along 
>> the lines of what MS provides with Excel and, I assume, VB?
> Stani's Python Editor (SPE) and Boa Constructor, I think. I've tried SPE 
> a few years back and liked it a lot.

Great! I'll give it a try.

> If you only ever write python code you might want to forget about jEdit 
> and use one of the two above. jEdit is dubbed 'Programmer's Text 
> Editor', and as such provides a 'unified' framework for many languages 
> (so you don't have to learn a new editor for every damn language you 
> write in once in a blue moon). It is for that reason a /tad/ less 
> specialized (though highly configurable). If you still want to use 
> jEdit, there is wxGlade for wxPython out there and Glade (not wxGlade!) 
> works for pyGTK, I believe.
> Hope that helps you deciding.

Very much so, and many thanks. My only languages are C and VBA, and the 
environments of R and Mathematica (hey, I'm ancient).

> "Willie" ;)

lol

DaveB


From ldo at geek-central.gen.new_zealand  Tue Sep 26 20:39:16 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 12:39:16 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>	<efa7cg$pr2$1@lust.ihug.co.nz>
	<efaknl$867$2@news.albasani.net>	<efakui$idf$4@lust.ihug.co.nz>
	<efate6$ilf$1@news.albasani.net> <efb1q3$a43$2@lust.ihug.co.nz>
	<mailman.673.1159276007.10491.python-list@python.org>
Message-ID: <efch5p$2cc$1@lust.ihug.co.nz>

In message <mailman.673.1159276007.10491.python-list at python.org>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>> In message <efate6$ilf$1 at news.albasani.net>, Georg Brandl wrote:
>> 
>> 
>>>Lawrence D'Oliveiro wrote:
>>>
>>>>In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:
>>>>
>>>>
>>>>>Lawrence D'Oliveiro wrote:
>>>>>
>>>>>>In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M
>>>>>>wrote:
>>>>>>
>>>>>>
>>>>>>>Lawrence is right that the escape method doesn't work the way he
>>>>>>>expects it to.
>>>>>>>
>>>>>>>Rewriting a library module simply because a developer is surprised is
>>>>>>>a *very* bad idea.
>>>>>>
>>>>>>I'm not surprised. Disappointed, yes. Verging on disgust at some
>>>>>>comments in this thread, yes. But "surprised" is what a lot of users
>>>>>>of the existing cgi.escape function are going to be when they discover
>>>>>>their code isn't doing what they thought it was.
>>>>>
>>>>>Why should they be surprised? The documentation states clearly what
>>>>>cgi.escape() does (as does the docstring).
>>>>
>>>>Documentation frequently states stupid things. Doesn't mean it should be
>>>>treated as sacrosanct.
>>>
>>>That's not the point. The point is that someone using cgi.escape() will
>>>hardly be surprised of what it does and doesn't do.
>> 
>> 
>> And this surprise, or lack of it, is relevant to the argument how,
>> exactly?
> 
> Is there *any* branch of this thread that won't end with some snippy
> remark from you?

And this is relevant to the argument how, exactly?


From fakeaddress at nowhere.org  Thu Sep 14 17:43:16 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Thu, 14 Sep 2006 21:43:16 GMT
Subject: Outbound port on sockets
In-Reply-To: <4mt1ajF7gs0hU1@uni-berlin.de>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
Message-ID: <U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>

Diez B. Roggisch wrote:
> bmearns schrieb:
>> Is it possible to specify which port to use as the outbound port on a
>> connection? 
[...]
>> Specifically, I'm trying to write an FTP host, and I'm trying to
>> implement the PORT command. 
> 
> AFAIK you neither can't do that nor need it.

It's not the issue here, but to specify the outgoing port
call bind(('', portnum)) before connect().


-- 
--Bryan


From kylotan at gmail.com  Thu Sep  7 08:41:44 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 7 Sep 2006 05:41:44 -0700
Subject: getting quick arp request
In-Reply-To: <1157629209.994088.152670@i42g2000cwa.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>
	<1157565629.691753.115910@e3g2000cwe.googlegroups.com>
	<mailman.114.1157623864.5279.python-list@python.org>
	<edorvq$nv2$1@south.jnrs.ja.net>
	<mailman.116.1157625350.5279.python-list@python.org>
	<1157629209.994088.152670@i42g2000cwa.googlegroups.com>
Message-ID: <1157632904.460335.319230@p79g2000cwp.googlegroups.com>

seb wrote:
> I am not fully confident to apply the patch from
> http://www.lvllord.de/?lang=en&url=downloads .on computers other than
> mine.

Fully understandable.

> Is there another solution ?

I believe it is possible to overwrite the .dll that SP2 gives you with
the older one. Obviously you lose any other bug fixes or enhancements
Microsoft put in there. I don't remember the actual file in question,
sorry. And I don't suppose this is much more acceptable than the
previous 'solution'.

> Still without the above patch on windows, the software "angry ip scan"
> for example managed to output a lot of more socket connection. How is
> it possible ?

It sends an ICMP ping to each address first, meaning it doesn't have to
waste time on trying a TCP connection to a host that doesn't respond.
This leads to fewer half-open connections.

It may also be that it implements part of its own TCP/IP stack, and
accessing the ethernet card directly, but I don't know how practical
that is for you. Ethereal and nmap appear to do this; you might want to
browse their open source code, and/or ask on their mailing lists or
forums.

-- 
Ben Sizer



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 09:02:22 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 14:02:22 +0100
Subject: Help me use my Dual Core CPU!
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B437@vogbs009.gb.vo.local>

[Simon Wittber]

| I write cross platform games in Python, and I'd really like to be able
| to use this second core (on my machine, and on user's 
| machines) for any new games I might write.

| I know threads won't help (in CPython at least) so I'm investigating
| other types of concurrency which I might be able to use. I really like
| the PyLinda approach

I find it very elegant. I only wish I had some real-world use for it!

| Is there any cross platform way to share python objects across
| processes? (I've found POSH, but it's old, and doesn't appear to be
| maintained). I could implement my own object space using 
| shared memory, but from what I can see, this is not available on
Win32.

There is a bunch of Python sub-industries dedicated to
inter-process cooperation. But I don't know if that's
what you're after. Setting aside the strict shared-memory
option (for which I don't know of a cross-platform solution),
you have -- in particular order:

+ Pyro - http://pyro.sf.net
+ Corba - eg omniorb http://omniorb.sourceforge.net/
+ SPyRO - http://lsc.fie.umich.mx/~sadit/spyro/spyro.html
+ mmap - (built-in module) http://docs.python.org/lib/module-mmap.html
+ twisted - (because it can do everything), esp.
http://twistedmatrix.com/projects/core/spread
+ Spread - http://www.spread.org/
+ Roll-your-own sockets -
http://docs.python.org/lib/module-SocketServer.html

etc. etc. etc.

But I have the feeling I'm teaching my grandmother... Is that
the kind of thing you were after? Or not?

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From steve at holdenweb.com  Tue Sep 12 16:41:08 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 21:41:08 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <4507153C.9070401@tim.thechases.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>	<mailman.384.1158087083.5279.python-list@python.org>	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>	<ee72uh$jca$1@sea.gmane.org>
	<4507153C.9070401@tim.thechases.com>
Message-ID: <ee75vr$tro$1@sea.gmane.org>

Tim Chase wrote:
>>dynamic typing != random typing.  if your program is using the
>>DB-API to add data to an SQLite database, who, exactly, is
>>inserting the values? who's producing the data?  under what
>>circumstances would that code produce or insert arbitrarily
>>typed data?
> 
> 
> Must be the code written by a Dr. Jekyll/Mr. Hyde personality...
> 
> "But honestly, boss, I didn't write this code!  It was my evil 
> alter-ego that puts VARCHAR values containing Gilbert & Sullivan 
> lyrics into the Amount_Due CURRENCY fields!"
> 
Hence the phrase "Going for a song"?

groan-along-with-me-ly y'rs  - steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From cog109 at gmail.com  Sun Sep 17 07:53:49 2006
From: cog109 at gmail.com (cog109 at gmail.com)
Date: 17 Sep 2006 04:53:49 -0700
Subject: Looking for a python IDE
In-Reply-To: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <1158494029.222792.31410@k70g2000cwa.googlegroups.com>


Ayon kay alfaeco at gmail.com:
> Hello
>
> I am looking for a good IDE for Python. Commercial or Open Software.
>
> If possible with visual GUI designer.
>
> For the moment I am considering Komodo.
>
> Any suggestions?
>
> Thanks in advance

I like to use BOA Constructor i think it is the best compare to KOMODO
because of its tight bond to wxPython....



From samirbenabid at linuxmail.org  Sun Sep  3 16:43:41 2006
From: samirbenabid at linuxmail.org (samir)
Date: 3 Sep 2006 13:43:41 -0700
Subject: Syntax suggestion.
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
	<slrnefhdtt.flm.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1157316221.203928.26090@h48g2000cwc.googlegroups.com>

Saluton!

Simon Forman wrote:
>But think of all the curly braces around code blocks that you've never
had to type!  ;-)

That's why I left java to jython!

Eirikur Hallgrimsson wrote:
>This actually exists.
>The language which omits punctuation not actually required to resolve
ambiguity is called Ruby.
>Ruby is subject to a lot of love/hate over this.

It's late, now I talk Python HSSSHSSHS HSSHSS HS :)

I think that Ruby is a good scripting language for game engines but not
as good as Python to do some serious scientific processes (or, at least
Ruby doesn't have all the necessary "batteries").

Talking of games, "Blade of Darkness" was scripted entirely in Python
(1.5 I think)
:)

Sybren Stuvel wrote:
> But how would you discern between a function reference and a function
> call?

That would be a problem with two solutions:
1- If the function doesn't have any parameters, it will be called with
the empty parentheses (just like usual!);
2- to indicate that this is a function call, we would be adding a $ at
the end of the statement.

Gxis la reskribo
Samir



From deets at nospam.web.de  Thu Sep 28 17:15:50 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 28 Sep 2006 23:15:50 +0200
Subject: vector and particle effects
In-Reply-To: <1159467915.132812.291210@i3g2000cwc.googlegroups.com>
References: <1159467915.132812.291210@i3g2000cwc.googlegroups.com>
Message-ID: <4o2sc6Fc80quU1@uni-berlin.de>

Jay schrieb:
> I'd like to experiment a little bit with vector graphics in python.
> When I say 'vector graphics' I don't mean regular old svg-style.  I
> mean vector game style as in simulation of vector beam drawn graphics.
> If you still don't know what I'm talking about, see Grid Wars 2
> (http://gridwars.marune.de/) or Battlezone
> (http://en.wikipedia.org/wiki/Battlezone).  I'm guessing I'd just be
> drawing shapes with particle effects?

pygame and pyopengl both are your friends here - for pure vector line 
graphics the former is sufficient, but using the latter would allow for 
a great deal of freedom, for example for asteroids that really look like 
rocks and freely rotate and the like.

Diez


From fredrik at pythonware.com  Tue Sep 26 02:08:58 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 08:08:58 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efaeg4$5oj$2@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
Message-ID: <efag5q$ih5$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

>         yield dict(zip(Fields, NextRow))

the OP didn't ask for a field name => value mapping, though.

</F>



From apardon at forel.vub.ac.be  Thu Sep 28 09:35:03 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 13:35:03 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<1159370280.794129.104190@i3g2000cwc.googlegroups.com>
	<slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>
	<efg109$4vr$1@news.albasani.net>
	<slrnehn6e8.rcu.apardon@rcpc42.vub.ac.be>
	<7xac4k1dya.fsf@ruckus.brouhaha.com>
	<7x64f81dt0.fsf@ruckus.brouhaha.com>
Message-ID: <slrnehnjs7.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-28, Paul Rubin <http> wrote:
> Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
>> > sys.maxint - 3 to sys.maxint + 7. I'm not sure tbl[:Top]
>> > would do what it is supposed to do in those circumstances.
>
>> Top = object()
>> class Table(list):
> ...
>
> Oh wait, I missed the : in your tbl[:Top] example.  Yeah, you could
> hair up Table to account for slices, I'll leave the exercise to you.

Yes, I could hair up Table, but that is missing the point somewhat.
The idea for provinding extreme values is that you don't have to
hair up the code.

In any case it seems I have my answer. I have some suggestions I can
try out, but writing up once own module for extreme values isn't as
easy as is suggested in the rejection of the PEP and there is probably
very little chance to get the PEP reopened.

-- 
Antoon Pardon


From danb_83 at yahoo.com  Mon Sep 25 14:20:05 2006
From: danb_83 at yahoo.com (Dan Bishop)
Date: 25 Sep 2006 11:20:05 -0700
Subject: A critique of cgi.escape
In-Reply-To: <mailman.518.1159087749.10491.python-list@python.org>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
Message-ID: <1159208405.525406.15540@h48g2000cwc.googlegroups.com>

Fredrik Lundh wrote:
> Jon Ribbens wrote:
>
> > Making cgi.escape always escape the '"' character would not break
> > anything, and would probably fix a few bugs in existing code. Yes,
> > those bugs are not cgi.escape's fault, but that's no reason not to
> > be helpful. It's a minor improvement with no downside.
>
> the "improvement with no downside" would bloat down the output for
> everyone who's using the function in the intended way,

"Unless" "your" "CGI" "scripts" "output" "text" "like" "this," "I"
"think" "it's" "absurd" "to" "consider" "the" "bloat" "significant."



From fredrik at pythonware.com  Tue Sep 26 10:13:08 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 16:13:08 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><Xns984996E6BABCEduncanbooth@127.0.0.1><slrnehfogu.6tm.jon+usenet@snowy.squish.net><Xns98499CF9DCEE4duncanbooth@127.0.0.1><slrnehfr5g.6tm.jon+usenet@snowy.squish.net><mailman.672.1159275735.10491.python-list@python.org><slrnehia6n.9o0.jon+usenet@snowy.squish.net><mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
Message-ID: <efbchk$nsv$1@sea.gmane.org>

Jon Ribbens wrote:

> I notice that yet again you've snipped the substantial point and
> failed to answer it, presumably because you don't know how.

cute.

> What do XML Information Sets have to do with escaping control
> characters in HTML?

figure out the connection, and you'll have the answer to your "substantial
point".

</F> 





From joel.sjoo at gmail.com  Wed Sep  6 06:28:34 2006
From: joel.sjoo at gmail.com (joel.sjoo at gmail.com)
Date: 6 Sep 2006 03:28:34 -0700
Subject: Import a textfile to MS SQL with python
In-Reply-To: <mailman.71.1157536441.5279.python-list@python.org>
References: <mailman.71.1157536441.5279.python-list@python.org>
Message-ID: <1157538514.814907.125450@b28g2000cwb.googlegroups.com>

Ok thanks Tim. I'm possible to read the file now as you described but
when I pass it to the DB I got an error says:

[['1', 'Joel', 'Sjoo'], ['2', 'Sture', 'Andersson'], ['3', 'Arne',
'Svensson']]
Traceback (most recent call last):
File "txttosql6.py", line 23, in ?
    row
File "C:\Python24\Lib\site-packages\pymssql.py", line 120, in execute
    self.executemany(operation, (params,))
File "C:\Python24\Lib\site-packages\pymssql.py", line 146, in
executemany
    raise DatabaseError, "internal error: %s (%s)" %
(self.__source.errmsg(), se
lf.__source.stdmsg())
pymssql.DatabaseError: internal error: None (None)

I dont know if it is the pymssql module that not work with this code. I
a code that you described.

import csv
import pymssql
reader = csv.reader (open ("c:\\temp\\test.txt"), delimiter="\t")
data = []
for line in reader:
  data.append (line)

myconn =
pymssql.connect(host='lisa',user='sa',password='',database='junk')
mycursor = myconn.cursor()
for row in data:
  mycursor.execute(
    "INSERT INTO python (id, namn, efternamn) VALUES (?, ?, ?)",
    row
  )

db.commit () # if needed etc.
db.close ()



From anthra.norell at tiscalinet.ch  Sat Sep  9 04:30:07 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Sat, 9 Sep 2006 10:30:07 +0200
Subject: Looking for a regexp generator based on a set of known
	string	representative of a string set
Message-ID: <000901c6d3ea$289fb100$0201a8c0@mcuf7>

Diez B. Roggisch wrote:
> vbfoobar at gmail.com schrieb:
>> Hello
>>
>> I am looking for python code that takes as input a list of strings
>> (most similar,
>> but not necessarily, and rather short: say not longer than 50 chars)
>> and that computes and outputs the python regular expression that
>> matches
>> these string values (not necessarily strictly, perhaps the code is able
>> to determine
>> patterns, i.e. families of strings...).
>
> For matching the exact set, of course a concatenation can be used.
> However, this is of limited use, because then simple string find will
> suffice.
>
> In general, this can't be done. It might be possible that the underlying
> structure of the language isn't regular at all - for example, the simple
> language of palindromes isn't.
>
> And even if it was - the search space is just to large to explore. You
> could generate a bazillion matching expressions, but .* will always
> match - so how do you prevent the generator from converging towards that?
>
> If all you have are those strings, you are better off trying to infer
> some structure yourself.
>
> Diez


Here is how regular expressions raise confusion. One starts with a relatively simple matching problem and before long finds oneself
in a "search space too large to explore", having to formulate the right expression out of "a bazillion" permutations with a syntax
replete with potential traps: backslashes, special characters, precedence order, etc. The fact emerges (once more) that a regular
expression does not spare the effort of acquiring a crystal clear conception of what needs to be done as an absolute prerequisite of
writing code that in the end can be relied upon to do what it is supposed to do. In order to acquire that crystal clear conception a
"space too large to explore" is hardly a working environment one should be eager to get into. Yet regular expressions seem to exert
a strange attraction and are often sought for problems that don't really require them. I suspect this is because the regular
expression parsers are made by highly qualified experts and so they may recommend themselves to the programmer with a less than
perfect understanding of a task as a sort of magic bullet that "does it right" all by itself. Regex eding as a substitute for
problem analysis so to speak ...
      Most OPs are rather sketchy and leave it up to their readers to guess purpose, requirements, incidentals, environmentals,
restrictions, etc. Accordingly, threads often veer off topic very quickly into lofty realms of academic interest, the OP never to be
heard from again. So I would suggest that the OP explain what he intends to do with his regular expression. A lot depends on it.
      In the interim I'd like to resize the search space to a manageable dimension with the proven hypothesis that the number of
useless permutations of the kind being discussed is a bazillion minus one, because, fortunately, there is only one that makes sense.
It follows these two rules: 1. First come first serve. And 2. Of two contending targets the longer prevails. That is not to say
other rules never make sense. It is to say that in ninety-nine percent of the cases this rule applies and that the other one percent
can also be understood in terms of these two rules plus exception rules.

Chapter 3.1. from the SE doc visualizes the point by replacing a set of overlapping targets with their upper-cased selves:

   >>> overlapping_targets = 'be=BE being=BEING been=BEEN bee=BEE belong=BELONG long=LONG longer=LONGER'
   >>> high_strung_bee_story = "There was a bee belonging to hive nine longing to be a beetle and thinking that being a bee was
okay, but she had been a bee long enough and wouldn't be one much longer."
   >>> SE.SE (overlapping_targets)(high_strung_bee_story)
"There was a BEE BELONGing to hive nine LONGing to BE a BEEtle and thinking that BEING a BEE was okay, but she had BEEN a BEE LONG
enough and wouldn't BE one much LONGER."

The matches appear correct, though BELONGing, LONGing and BEEtle exemplify unintended matches. These could be avoided by refinement
of the target set. The partially successful result points out the direction the refinement has to take. Precedence being unrelated
to the order of the definitions, editing the set is carefree in that it does not impose precedence considerations. The benefit in
terms of modularity is substantial, as module sets can be combined.

Doing the example with a regular expression:

>>> r = re.compile ('be|being|been|bee|belong|long|longer')
>>> r.findall (high_strung_bee_story)
['be', 'be', 'long', 'long', 'be', 'be', 'be', 'be', 'be', 'be', 'long', 'be', 'long']

The regular expression also applies rule one: first come first serve, but applies a different rule two, defining precedence in the
order in which the targets line up in the expression, left to right. In order to implement the SE rule of sensibility, the patterns
should be lined up  reverse-sorted, which places the longer ones to the left.

>>> r = re.compile ('longer|long|belong|being|been|bee|be')
>>> r.findall (high_strung_bee_story)
['bee', 'belong', 'long', 'be', 'bee', 'being', 'bee', 'been', 'bee', 'long', 'be', 'longer']

Which of the two is correct? Without knowing the purpose of the search it is impossible to know. I expect it to be the second one.
But only the OP knows and could help his helpers help by letting them know what he is up to.


Frederic






From Avizoa at gmail.com  Sun Sep 24 11:08:30 2006
From: Avizoa at gmail.com (Avizoa at gmail.com)
Date: 24 Sep 2006 08:08:30 -0700
Subject: Strange __future__ behavior in Python 2.5
In-Reply-To: <ef5u4f$7n7$1@news.albasani.net>
References: <1159044689.234403.216460@m7g2000cwm.googlegroups.com>
	<ef5u4f$7n7$1@news.albasani.net>
Message-ID: <1159110510.678658.127770@k70g2000cwa.googlegroups.com>


Georg Brandl wrote:

> This is a bug and has now been fixed in the SVN repo.
> Thanks for bringing it up.


Ouch, I feel bad now. I've been noticing this behavior since 2.5B1 but
I didn't realize it was a bug.



From R.Brodie at rl.ac.uk  Thu Sep 14 11:38:15 2006
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Thu, 14 Sep 2006 16:38:15 +0100
Subject: How do I converted a null (0) terminated string to a Python
	string?
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
	<pan.2006.09.14.15.36.07.509974@gmx.net>
Message-ID: <eebt18$i30$1@south.jnrs.ja.net>


"Marc 'BlackJack' Rintsch" <bj_666 at gmx.net> wrote in message 
news:pan.2006.09.14.15.36.07.509974 at gmx.net...

> I would spell it:
>
> if strg.endswith('\0'):
>    strg = strg[:-1]

I would just go with: strg = strg.rstrip('\0')




From bignose+hates-spam at benfinney.id.au  Mon Sep 18 23:11:47 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 19 Sep 2006 13:11:47 +1000
Subject: Recursing for Progress Bar
References: <1158633528.072727.212760@h48g2000cwc.googlegroups.com>
Message-ID: <871wq8lfd8.fsf@benfinney.id.au>

"half.italian at gmail.com" <half.italian at gmail.com> writes:

> Is there a way to get around recursion limits?  Help!
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>       def incrementProgress(self, window, workorder):
>               #...
> 		time.sleep(.1)
> 		self.incrementProgress(window, workorder)

You don't show a complete working example, so it's hard to know the
context of this.

What is the purpose of this function? Why is it performing these last
two lines at all?

Surely this function should be called by an *external* loop of the
actual processing, with no recursion, and no enforced delay.

    import time

    class ProgressBar(object):
        """ Display of progress as a horizontal bar """

        update_frequency = 0.1

        def __init__(self, window):
            self.window = window
            self._prev_increment_time = 0

        def increment(self, workorder):
            """ Increment the progress display """
            # ... code to unconditionally update the display
            self._prev_update_time = time.time()

        def update(self, workorder):
            """ Update the progress if necessary """
            time_since_update = time.time() - self._prev_update_time
            if time_since_update >= self.update_frequency:
                self.increment(workorder)

    window = however_you_make_a_window()
    bar = ProgressBar(window)

    for foo in iterator_of_foos:
        workorder = do_the_processing(foo)
        bar.update(workorder)

-- 
 \     "Buy not what you want, but what you need; what you do not need |
  `\           is expensive at a penny."  -- Cato, 234-149 BC, Relique |
_o__)                                                                  |
Ben Finney



From cliff at develix.com  Wed Sep 13 03:34:38 2006
From: cliff at develix.com (Cliff Wells)
Date: Wed, 13 Sep 2006 00:34:38 -0700
Subject: Python blogging software
In-Reply-To: <1158132558.3622.29.camel@devilbox>
References: <1158132558.3622.29.camel@devilbox>
Message-ID: <1158132878.3622.33.camel@devilbox>

On Wed, 2006-09-13 at 00:29 -0700, Cliff Wells wrote:

> Anyone aware of any functional (doesn't need to be complete, beta is
> fine) blog software written in Python?  

Hmph.  And as soon as I hit send I find

 http://wiki.python.org/moin/PythonBlogSoftware

Okay, so is there any *not* on that list that should be considered (and
perhaps added to the list)?

Regards,
Cliff

-- 



From p.lavarre at ieee.org  Thu Sep 28 19:42:01 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 28 Sep 2006 16:42:01 -0700
Subject: ctypes.c_void_p(-1) might not be C return (void *) -1
References: <1159464342.982140.200420@b28g2000cwb.googlegroups.com>
	<mailman.900.1159468919.10491.python-list@python.org>
Message-ID: <1159486921.350295.190160@m7g2000cwm.googlegroups.com>

> I've started a wiki page where I already added an entry about the above question.
> Do you think the entry would have answered your question?
> http://starship.python.net/crew/theller/moin.cgi/CodeSnippets

As concise as I now can imagine, yes thank you.

I see the main point leads: "The truth value of any NULL ctypes pointer
instance is False."  That angle neatly ducks my ongoing newbie
confusion over a null constructed in Python via c_void_p(0) being
different from a null constructed in C via return (void *) 0.

> ...
> > And so then the next related Faq is:
> >
> > Q: How should I test for ((void *) -1)?
>
> For me, on Windows, c_void_p(-1).value is the same
> as c_void_p(0xFFFFFFFF).value, but it is -1 not 0xFFFFFFFF.

Different results at my desk.  Specifically, I see:

>>> from ctypes import * ; c_void_p(-1).value
4294967295L
>>>

in Mac OS X 10.4.7 Python 2.5 r25:51918 and Win XpSp2 Python 2.5
r25:51908.

> Worse, on 64-bit systems c_void_p(-1).value is 184467440737009661615, which
> is the same as 0xFFFFFFFFFFFFFFFF.
> So, to be portable, INVALID_HANDLE_VALUE should be defined like this:
> INVALID_HANDLE_VALUE = c_void_p(-1).value

Exactly what I should have written, yes, thank you.

And somewhat generalisable: c_void_p(0).value is None.

Maybe this is the thing that's been astonishing me: maybe C often does
return the .value of the pointer, rather than a new instance of the
POINTER class?

> and your test would become
> (ctypes.cast(pv, ctypes.c_void_p).value == INVALID_HANDLE_VALUE

Yes.

Mind you, typing out all that noise inspires me to ask, does (pv ==
INVALID_HANDLE_VALUE) give the wrong answer for any pv other than
c_void_p(-1)?  In other words, if by convention I get all my pointers
from C and never construct a pointer in Python except to take its
value, then can I safely write the more obvious translation of (pv ==
INVALID_HANDLE_VALUE)?

> PS: It is inconsistent that the .value of a c_void_p instance is signed on
> 32-bit systems, and unsigned on 64-bit systems, but it seems we have to live
> with that.

I'm interested, if you can make the time to say more ...

> Fortunately, the c_void_p constructor accepts both signed and unsigned
> Python ints and longs, so it should be possible to work around that fact.

Good.

> ...
> might be better to use another wiki for ctypes, maybe the python.org one, for this
> stuff.) ...

Could be.  Offline I heard we might have more pages coming soon.
Checking at random just now, I see http://wiki.python.org/moin/ is
"immutable", so I guess I can't add "A Wiki page to collect the Faq's
highlit by Clp" to the "Starting points" > "Asking for Help" >
"Wanted...">



From __peter__ at web.de  Fri Sep  1 13:44:14 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 01 Sep 2006 19:44:14 +0200
Subject: Strange import behavior
References: <1157128666.851261.55930@i42g2000cwa.googlegroups.com>
Message-ID: <ed9rgd$iq8$00$1@news.t-online.com>

unexpected wrote:

> Hey guys,
> 
> I'm having problems importing a file into my python app. Everytime I
> try to define the object specified by this file, i.e,
> 
> test = Test(),
> 
> It raises an ImportError exception: ImportError: cannot import name
> Test.
> 
> I've declared it as:
> 
> from test import Test (and I've also tried from test import *)
> 
> As luck would have it, if I try creating a newfile (say test2) and then
> declare the same class as:
> 
> from test2 import Test()
> 
> It works fine! I tried doing this with the first couple of files, but
> then another error crops up for another file giving me this
> ImportError...so I'd end up having to re-copy a bunch of files over
> again.
> 
> I feel like there may be some sort of dependency screw up or
> whatever..Is there a command that's like "Python, chill, let's start
> from scratch and build this thing"?

Replace

from test import Test

with

import test
print test.__file__
raise SystemExit

The test file you are importing is probably not the one you expect. To fix
that make sure that the directory of /your/ test.py is in sys.path /before/
the directory of the test file you are accidentally importing. Even better,
rename it to something unambiguous as the name 'test' is already taken by
the test package of a vanilla Python installation. For example, I get

>>> import test
>>> test.__file__
'/usr/local/lib/python2.4/test/__init__.pyc'

The ImportError is actually an AttributeError in disguise:

>>> import test
>>> test.Test
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: 'module' object has no attribute 'Test'
>>> from test import Test
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: cannot import name Test

Peter



From max at alcyone.com  Wed Sep 13 23:48:51 2006
From: max at alcyone.com (Erik Max Francis)
Date: Wed, 13 Sep 2006 20:48:51 -0700
Subject: time-based point system
In-Reply-To: <1158205582.339882.23000@i3g2000cwc.googlegroups.com>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
	<1158205582.339882.23000@i3g2000cwc.googlegroups.com>
Message-ID: <HM6dnUgt9fG0TJXYnZ2dnUVZ_uydnZ2d@speakeasy.net>

Jay wrote:

> Okay, this is a game.  So the points are abstract.  It's like an arcade
> game in respect to the points.  They don't actually mean or represent
> anything.  The only point is to get a high score.  The idea is that the
> faster the user acts (or reacts) the greater amount of points they'll
> receive.  Simplified, I need a fuction or statement that takes in a
> small number and spits out a big number.  The smaller the input, the
> larger the output.

There are any number of functions which fit this property, like f(x) = 
1/x.  You'll have to define more clearly what properties of this 
negative function you want to narrow it down beyond that.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   Get married, but never to a man who is home all day.
    -- George Bernard Shaw


From nick at craig-wood.com  Mon Sep 11 08:30:03 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 11 Sep 2006 07:30:03 -0500
Subject: A cross platform systray icon
Message-ID: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>

Does anyone have some hints / tips / experience with making a cross
platform systray icon?  It should work on Windows, Gnome and KDE at
minimum.

I've seen the win32all code which is very similar to the C code I've
written before for Windows.  It would be a small irritation to have to
integrate its event loop with whichever GUI framework I'm using for
the rest of it though.

I don't know how to make a systray under KDE/Gnome though, but I think
freedesktop has made it a lot easier now.  I didn't manage to find a
python example - does anyone have one?

Ideally I'd like someone to tell me that PyQT, tkinter or PyGTK does
it all for me, but from my searching on the subject I doubt it is
going to be that easy!

Thanks
-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From jpmcw at comcast.net  Wed Sep 20 20:02:40 2006
From: jpmcw at comcast.net (John McWilliams)
Date: Wed, 20 Sep 2006 17:02:40 -0700
Subject: Need some help here
In-Reply-To: <kaqdnedy87hDUIzYnZ2dnUVZ_umdnZ2d@comcast.com>
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
	<kaqdnedy87hDUIzYnZ2dnUVZ_umdnZ2d@comcast.com>
Message-ID: <R6GdnQeAbvDjS4zYnZ2dnUVZ_vidnZ2d@comcast.com>

Frank Drackman wrote:
> "Kareem840" <KareemOfweet840 at hotmail.com> wrote in message 
> news:1158790201.887958.84700 at k70g2000cwa.googlegroups.com...
>> Hello. Unfortunately, I am in need of money to pay my credit card
>> bills. If you could spare just $1, I would be grateful. I have a Paypal
>> account. Kramer1260 at hotmail.com. I swear this will go to my card
>> balances. Thank you.
>>
> 
> Sell your sperm, we don't want you to reproduce. 
> 
> 
f-u set

-- lsmft


From sxn02 at yahoo.com  Sun Sep 10 13:42:21 2006
From: sxn02 at yahoo.com (Sorin Schwimmer)
Date: Sun, 10 Sep 2006 10:42:21 -0700 (PDT)
Subject: Tkinter listbox:get
Message-ID: <20060910174221.31083.qmail@web56013.mail.re3.yahoo.com>

lb.curselection() won't return an integer, but a tuple of strings. Also, a StringVar receives a new value with the set() method. So, you'll have to write something like:

idx=lb.curselection()
StringValue.set(lb.get(int(idx[0])))

This will grab the first value from the tuple, convert it in integer, and pass it to lb.get() to extract the line in your Listbox, and set it in your Entry via the StringVar. If you allow multiple selections from your Listbox, you may have more than one value in idx, and you'll have to decide how you intend to process them.

Check any of these (or both):
http://www.pythonware.com/library/tkinter/introduction/index.htm
http://infohost.nmt.edu/tcc/help/pubs/tkinter/

They're both easy to follow, and you'll save more time, than asking one little think at a time, and then waiting for someone to answer.

Good luck!
Sorin

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From Roberto.Bonvallet at cern.ch  Mon Sep  4 10:54:27 2006
From: Roberto.Bonvallet at cern.ch (Roberto Bonvallet)
Date: 4 Sep 2006 14:54:27 GMT
Subject: replace deepest level of nested list
References: <5lWKg.17116$CL6.8808@trnddc06>
Message-ID: <edhen3$fbd$1@sunnews.cern.ch>

David Isaac wrote:
> I have a list of lists, N+1 deep.
> Like this (for N=2):
> [[['r00','g00','b00'],['r01','g01','b01']],[['r10','g10','b10'],['r11','g11'
> ,'b11']]]
> 
> I want to efficiently produce the same structure
> except that the utlimate lists are replaced by a chosen (by index) item.
> E.g.,
> [['r00','r01'],['r10','r11']]
> 
> N is not known ahead of time.

First thing I came up with:

>>> l = [[['r00','g00','b00'],['r01','g01','b01']],[['r10','g10','b10'],['r11','g11','b11']]]
>>> def get_deepest(l, n):
...     if isinstance(l[0], list):
...         return [get_deepest(s, n) for s in l]
...     else:
...         return l[n]
... 
>>> get_deepest(l, 0)
[['r00', 'r01'], ['r10', 'r11']]
>>> get_deepest(l, 1)
[['g00', 'g01'], ['g10', 'g11']]
>>> 

n is the chosen index.
HTH.
-- 
Roberto Bonvallet


From gene.tani at gmail.com  Sat Sep 16 14:50:37 2006
From: gene.tani at gmail.com (gene tani)
Date: 16 Sep 2006 11:50:37 -0700
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <1158426726.483021.199700@h48g2000cwc.googlegroups.com>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<1158420540.813155.135850@k70g2000cwa.googlegroups.com>
	<1158422020.995631.61740@m7g2000cwm.googlegroups.com>
	<1158426726.483021.199700@h48g2000cwc.googlegroups.com>
Message-ID: <1158432637.411547.181610@k70g2000cwa.googlegroups.com>


Eric_Dexter at msn.com wrote:
> vbgunz wrote:
> > > > Has anyone tried this thing..
> > > > http://www.regular-expressions.info/regexbuddy.html
> >
> > I use kodos http://kodos.sourceforge.net/. I firmly agree using a tool
> > like this to learn regular expressions will not only save you a
> > ridiculous amount of time spent on trial and error *but* it's really
> > easy and makes learning re a joy.
> >
> > btw, kodos is specifically created with Python's re module in mind.
> > Good luck!
>
> kodos does look good but I do not have the pyqt (maybe I am slightly
> off) interface to use it on my system..  with another graphic interface
> it would be a must try software.

There's also Komodo's regex debugger, (I would guess WIng IDE has a
good one also) and these

http://www.weitz.de/regex-coach/
http://www.quanetic.com/regex.php

http://www.python.org/pypi/retest/0.6
http://www.python.org/pypi/Pyreb/0.1.5



From ilias at lazaridis.com  Tue Sep 26 14:29:14 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 26 Sep 2006 11:29:14 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <mailman.544.1159134982.10491.python-list@python.org>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<mailman.544.1159134982.10491.python-list@python.org>
Message-ID: <1159295354.259058.52990@i42g2000cwa.googlegroups.com>

Robert Kern wrote:
> Ilias Lazaridis wrote:
> > Steve Holden wrote:
>
> >> And I am wondering at your continual surprise when the rest of the world
> >> fails to share your perceptions. Doesn't this carry *any* information?
> >
> > not the rest of the world, but the rest of the python community.
>
> Remember back when you first came to comp.lang.python and I told you that this
> was not the community that you were looking for?
>
>    http://mail.python.org/pipermail/python-list/2005-February/266629.html
>
> Good times.

yes, good times, for the memory:

http://case.lazaridis.com/wiki/PythonAudit

but now I produce (using python):

http://dev.lazaridis.com/base

> Anyways, against my better judgement, I will tell you that you can customize the
> output by replacing sys.displayhook with your own function:
>
>    http://www.python.org/doc/current/lib/module-sys.html
>
>  >>> import sys
>  >>> 1
> 1
>  >>> def f(obj):
> 	print '    ' + repr(obj)
>
>  >>> sys.displayhook = f
>  >>> 1
>      1
>  >>>

I've placed this code within /Lib/sitecustomize.py, but have one
strange result:

>>> from talker import *
>>> t = Talker()
>>> t.sayHello
  : <bound method Talker.sayHello of <talker.Talker instance at
0x00DEA198>>
>>> t.sayHello()
Hello world
  : None
>>>

1st: "Hello world" comes still on the beginning.
2nd: I got this "None"


class Talker:
    def sayHello(self):
        print 'Hello world'
 
    def talk(self):
        self.sayHello()



From nil at dev.nul  Sun Sep  3 07:17:35 2006
From: nil at dev.nul (Christian Stapfer)
Date: Sun, 3 Sep 2006 13:17:35 +0200
Subject: Problem loading true-type font with PIL - "solved"
References: <e3b9a$44f8597f$54482a8f$31423@news.hispeed.ch>	<d8339$44f9b228$54482a8f$32099@news.hispeed.ch><ede67u$at6$1@sea.gmane.org>
	<mailman.10302.1157277734.27775.python-list@python.org>
Message-ID: <26042$44fab9d5$54482a8f$20940@news.hispeed.ch>

Robert Kern wrote:
> Fredrik Lundh wrote:
>> Christian Stapfer wrote:
>>
>>> Problem "solved" by rudely installing PIL 1.1.5 for Windows and
>>> Python 2.4 from http://www.pythonware.com/products/pil/
>>> right on top of my existing "Python Enthought Edition--Python
>>> 2.4.3 for Windows". This might have destroyed the consistency
>>> of the overall installation, of course. I'm well punished
>>> for installing Enthought Python 2.4.3: Next time I will again
>>> install all packages that I need myself, as I did for Python
>>> 2.3, instead of using a prepackaged distribution like Enthought
>>> Python.
>>
>> Since the truetype extension is quite popular, and from what I'm told
>> worked just fine in earlier Enthought releases, this is probably just an
>> accidental omission.  I'm sure the Enthought people will fix this if you
>> report it to them.
>
> https://svn.enthought.com/enthought/ticket/864
>
> The person who builds the Enthought Edition releases is out on vacation
> this week, so a new release will probably wait until he comes back. In the
> meantime, installing Fredrik's binaries on top of ours should work just
> fine.

Great! - if it does. (Your words in God's ear...) Sorry about leaving out
some details about the release I installed. Maybe the following helps?

C:\Python24\Enthought\Doc>python
Python 2.4.3 - Enthought Edition 1.0.0 (#69, Aug  2 2006, 12:09:59) [MSC
v.1310 32 bit (Intel)] on win32

Perhaps not. Since I have already deleted the Windows installer, and do not
know of any other way to get Enthought-specific version info, this is all I 
can
offer at the moment... (I had downloaded the installer from
http://code.enthought.com/enthon/
on August 31, around 06:00 GMT. I suppose this means that it was
enthon-python2.4-1.0.0.exe, but cannot verify anymore whether it was this
specific installer that I used - or not.)

Best regards and thanks for your reply,
Christian Stapfer



From wescpy at gmail.com  Tue Sep 26 15:39:50 2006
From: wescpy at gmail.com (wesley chun)
Date: Tue, 26 Sep 2006 12:39:50 -0700
Subject: Surprise using the 'is' operator
Message-ID: <78b3a9580609261239v6a7e289q126e90da401c2752@mail.gmail.com>

as a side note, the ints that are cached (for current versions of
Python) are in range(-1, 100)... is this documented somewhere? i know
it's subject to change.  and as already mentioned, you probably
wouldn't use "is" this way in real code... i know you are just
reinforcing your learning of the difference between object *value*
comparison vs. object *identity* comparison. what you've discovered,
however, is important in learning Python... i have material in my
intro course and the book dedicated to this subject.

cheers,
-- wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From rNOSPAMon at flownet.com  Tue Sep 12 01:33:31 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Mon, 11 Sep 2006 22:33:31 -0700
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
	<mailman.306.1158021619.5279.python-list@python.org>
Message-ID: <rNOSPAMon-25BB84.22333011092006@news.gha.chartermi.net>

In article <mailman.306.1158021619.5279.python-list at python.org>,
 Steve Holden <steve at holdenweb.com> wrote:

> Ron Garret wrote:
> > In article <mailman.294.1158010161.5279.python-list at python.org>,
> >  Steve Holden <steve at holdenweb.com> wrote:
> > 
> > 
> >>But basically, you aren't providing a CGI environment, and that's why 
> >>cgi.parse() isn't working.
> > 
> > 
> > Clearly.  So what should I be doing?  Surely I'm not the first person to 
> > have this problem?
> > 
> > I have managed to work around this for now by copying and modifying the 
> > code in cgi.parse, but this still feels like a Horrible Hack to me.
> > 
> Let me get this right. You are aware that CGIHTTPServer module exists. 
> But you don't want to use that.

That's right.  I don't want to run CGI scripts.  I don't want to launch 
a new process for every request.  I want all requests handled in the 
server process.

> Instead you want to use your own code.

No, the whole reason I'm asking this question is because I *don't* want 
to write my own code.  It seems to me that the code to do what I want 
ought to be out there (or in there) somewhere and I shouldn't have to 
reinvent this wheel.  But I can't find it.

> So you have ended up duplicating some of the functionality of the cgi 
> library. And it feels like a hack.

Yep.

rg


From dcrespo at gmail.com  Tue Sep 12 16:41:16 2006
From: dcrespo at gmail.com (Daniel Crespo)
Date: 12 Sep 2006 13:41:16 -0700
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <mailman.354.1158069918.5279.python-list@python.org>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
	<4505B54C.30905@designaproduct.biz>
	<mailman.285.1158002192.5279.python-list@python.org>
	<1158005948.883368.185320@m73g2000cwd.googlegroups.com>
	<mailman.289.1158006990.5279.python-list@python.org>
	<1158016994.349214.264610@q16g2000cwq.googlegroups.com>
	<mailman.354.1158069918.5279.python-list@python.org>
Message-ID: <1158093676.188294.241140@h48g2000cwc.googlegroups.com>

Hi Laszlo,

> Try this (untested):
>
> openssl req -config openssl.cnf -new -out my-server.csr
> openssl rsa -in privkey.pem -out my-server.key

Here's what I tried:

C:\OpenSSL\bin>openssl req -config openssl.cnf -new -out my-server.csr
Loading 'screen' into random state - done
Generating a 1024 bit RSA private key
.............++++++
..........................................++++++
writing new private key to 'privkey.pem'
Enter PEM pass phrase: PASSWORD
Verifying - Enter PEM pass phrase: PASSWORD
-----
You are about to be asked to enter information that will be
incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a
DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:CN
State or Province Name (full name) [Some-State]:DF
Locality Name (eg, city) []:CITY
Organization Name (eg, company) [Internet Widgits Pty Ltd]:COMPANY
Organizational Unit Name (eg, section) []:
Common Name (eg, YOUR name) []:
Email Address []:

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:PASSWORD
An optional company name []:COMPANY

C:\OpenSSL\bin>openssl rsa -in privkey.pem -out my-server.key
Enter pass phrase for privkey.pem: PASSWORD
unable to load Private Key
3688:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad
decrypt:.\
crypto\evp\evp_enc.c:461:
3688:error:0906A065:PEM routines:PEM_do_header:bad
decrypt:.\crypto\pem\pem_lib.
c:425:

Any help?

Thanks in advance

Daniel



From joel.sjoo at gmail.com  Wed Sep  6 09:27:21 2006
From: joel.sjoo at gmail.com (joel.sjoo at gmail.com)
Date: 6 Sep 2006 06:27:21 -0700
Subject: Import a textfile to MS SQL with python
In-Reply-To: <mailman.78.1157548192.5279.python-list@python.org>
References: <mailman.78.1157548192.5279.python-list@python.org>
Message-ID: <1157549241.321094.223260@d34g2000cwd.googlegroups.com>

Yes i got it to work now. Thank you for all help Tim and Steve. I hope
it will work for Oracle to :)

Regards Joel



From claesatwork at gmail.com  Wed Sep 27 14:58:42 2006
From: claesatwork at gmail.com (Claes at work)
Date: Wed, 27 Sep 2006 20:58:42 +0200
Subject: Difference between two dates in seconds
In-Reply-To: <efef6j$5au$2@sea.gmane.org>
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
	<efef6j$5au$2@sea.gmane.org>
Message-ID: <495c267b0609271158o52aa1165xfc878aa02729b8aa@mail.gmail.com>

On 9/27/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Claes at work wrote:
>
> why would you have to do that yourself?  why not let Python do it for
> you?  here's the code:
>
>     seconds = td.days * 86400 + td.seconds
>

Thanks, but that is exactly what I meant. I had hoped there would some
method that would return the delta in seconds. Something like
td.getSeconds(), and then not only the second part but the actual
number of seconds in the interval.

This is not a big deal in the sense that it is hard to do the above
calculation, and I don't want this to come off as a rant. Perhaps I am
just not used to Python yet. But I find the timedelta API unintuitive
in that it exposes its internal representation but does not add the
convenience I was expecting. From an object oriented standpoint I
would have preferred if the internal representation was private and
there were methods to get the result converted to arbitrary units.

Claes


From blair.houghton at gmail.com  Wed Sep 13 01:33:15 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 12 Sep 2006 22:33:15 -0700
Subject: best small database?
In-Reply-To: <2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>
	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
Message-ID: <1158125595.442379.287900@e63g2000cwd.googlegroups.com>


Larry Bates wrote:
> As far as "rational extension" is concerned, I think I can relate.
> As a developer of imaging systems that store multiple-millions of
> scanned pieces of paper online for customers, I can promise you
> the file system is quite efficient at storing files (and that is
> what the OP asked for in the original post) and way better than
> storing in Oracle blobs.  Can you store them in the database,
> absolutely.  Is it efficient and manageable.  It has been our
> experience that it is not.  Ever tried to upgrade Oracle 9 to
> Oracle 10 with a Tb of blobs?

Can't be any harder than switching between incompatible filesystems,
unless you assume it should "just work...".

--Blair



From wildemar at freakmail.de  Tue Sep 12 15:15:55 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Tue, 12 Sep 2006 21:15:55 +0200
Subject: "filtered view" upon lists?
In-Reply-To: <1158082006.858410.125480@i3g2000cwc.googlegroups.com>
References: <mailman.337.1158062350.5279.python-list@python.org>	<878xkpb5wa.fsf@gmail.com>	<mailman.363.1158075325.5279.python-list@python.org>
	<1158082006.858410.125480@i3g2000cwc.googlegroups.com>
Message-ID: <4507076B.2020406@freakmail.de>

bearophileHUGS at lycos.com wrote:
> Note that if you just have to scan the "view list", then you can use
> the lazy:
> 
> itertool.ifilter(predicate, iterable)

Yeah, had found that already; thanks anyway.
This function is actually the very reason I'm even asking this: 'If the 
std libs solve this problem for, maybe they solve the next one as well' 
I thought.
Well, can't always win, can you?

;)
wildemar


From tiarno at sas.com  Thu Sep 14 09:12:53 2006
From: tiarno at sas.com (Tim Arnold)
Date: Thu, 14 Sep 2006 09:12:53 -0400
Subject: xinclude and pathnames
References: <ee9231$mpj$1@foggy.unx.sas.com>
Message-ID: <eebkgl$u90$1@foggy.unx.sas.com>

"Tim Arnold" <tiarno at sas.com> wrote in message 
news:ee9231$mpj$1 at foggy.unx.sas.com...
> I'm using ElementTree to access some xml configuration files, and using 
> the module's xinclude capability. I've got lines like this in the parent 
> xml file (which lives in the same directory as the included xml file):
> <xi:include 
> href="/dept/app/doc/current/en/xml/asdf/asdf_syntaxterms.xml"/>
>
> When I started the project it was Unix-only; this worked fine. Now I have 
> users who want to use the system on Windows and of course that directory 
> path doesn't exist on Windows, but it is available on the network using a 
> name like \\ladida\current\en\xml\asdf\asdf_syntaxterms.xml
>
> if relative paths worked, I could imagine
> <xi:include href="asdf_syntaxterms.xml" /> would work.
> Also,the file can be read via an http server.
>
> My question: is there a way to make xinclude work with relative paths or 
> perhaps urls?
> Any ideas welcome--to me it looks like I'll have to restructure this part 
> of the system since I've basically programmed myself into a corner.
>

Replying to my own post. With no replies I assume that means either (a) I 
didn't explain the problem very well, or (b) I really have programmed myself 
into a corner and there's no other way to happiness except to rethink the 
problem.

That is, is there really no way to share xinclude'd files between *nix and 
Windows platforms.

Anyone been down this road before?
thanks,
--Tim Arnold




From steve at holdenweb.com  Fri Sep  8 04:15:36 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 09:15:36 +0100
Subject: the first arg to super() must be a type, not a class obj?
In-Reply-To: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>
References: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>
Message-ID: <edr8q2$v3g$3@sea.gmane.org>

metaperl wrote:
> On p.282 of "Python Cookbook" and in the Python docs on calling super:
> http://www.python.org/download/releases/2.2.3/descrintro/#cooperation
> 
> it is clear that the first argument to super is a class and not a type.
> However, for the code below, I am getting an error when attempting to
> provide a class as my first argument and don't understand why. Also,
> since this is my first attempt at writing anything of any seriousness
> in Python, any other feedback is welcome.
> 
I believe it needs to be a class whose ultimate ancestor is "object", 
and not an "old-style" class. This is probably why the docs suggest a 
type is required.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From roy at panix.com  Sun Sep 24 19:08:04 2006
From: roy at panix.com (Roy Smith)
Date: Sun, 24 Sep 2006 19:08:04 -0400
Subject: Talking to marketing people about Python
Message-ID: <roy-D4C452.19080324092006@reader2.panix.com>

I'm working on a product which for a long time has had a Perl binding for 
our remote access API.  A while ago, I wrote a Python binding on my own, 
chatted it up a bit internally, and recently had a (large) customer enquire 
about getting access to it.

I asked for permission to distribute the Python binding, and after a few 
weeks of winding its way through the corporate bureaucracy I got an email 
from a product manager who wants to meet with me to "understand the market 
demand for Python API before we commercialize it".

Can anybody suggest some good material I can give to him which will help 
explain what Python is and why it's a good thing, in a way that a 
marketing/product management person will understand?


From bignose+hates-spam at benfinney.id.au  Wed Sep 27 03:23:16 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 27 Sep 2006 17:23:16 +1000
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.640.1159254809.10491.python-list@python.org>
	<efcuf3$qht$2@lust.ihug.co.nz> <efd6n2$fbs$1@sea.gmane.org>
Message-ID: <87zmcllqmz.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> Lawrence D'Oliveiro wrote:
> > Steve Holden wrote:
> >>The fact remains that Google can chop your searching ability off
> >>at the knees ...
> > No they can't. They can only chop off your ability to use Google.
> > 
> [sigh]. Right, Lawrence, sorry I wasn't quite explicit enough for you.

Seems like a fairly important distinction. Google has the power to
"chop your searching ability off at the knees" only to the extent that
you grant them that power.

-- 
 \      "[...] a Microsoft Certified System Engineer is to information |
  `\     technology as a McDonalds Certified Food Specialist is to the |
_o__)                            culinary arts."  -- Michael Bacarella |
Ben Finney



From iamtheari at gmail.com  Wed Sep 27 15:25:31 2006
From: iamtheari at gmail.com (Ari Johnson)
Date: Wed, 27 Sep 2006 15:25:31 -0400
Subject: Computer Language Popularity Trend
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159359326.496431.293370@i3g2000cwc.googlegroups.com>
	<1159375876.352551.22600@m7g2000cwm.googlegroups.com>
	<1159383076.926175.55510@m73g2000cwd.googlegroups.com>
Message-ID: <m2fyed9kno.fsf@nibbler.theari.com>

cartercc at gmail.com writes:

> I don't think you can use any measure as an accurate yardstick, but
> rather as an impressionistic canvas.

Exactly.  You can't measure "popularity" without defining the term.
Xah Lee appears to define popularity based on the number of posts made
in a given language's Usenet group (for his choice of which group
belongs to a given language).  Given that a substantial portion of the
recent posts in each group is likely an off-topic Xah Lee crosspost,
this metric is probably unreliable even for measuring his own intended
metric: the amount of discussion taking place about each language on
Usenet.

How do you define popularity?  Do you define it by how much people
talk about a language on the internet?  How many programs are written
in it?  How many lines of code are written in it?  How many CPU cycles
are used to run code written in it?

None of these is fair, as it is.  More people use Ada than talk about
it online, because it is a common language in classified government
work.  More people talk about Lisp online than use it, because their
jobs or other circumstances limit their choice to other languages.
Moreover, most people use more than one language, and after a long day
at the office of pumping out Java or Perl, they go home and talk about
Lisp or C#.  Online discussion isn't a measure of actual use, even if
you can actually measure the total amount of discussion.

The number of programs written is likely to be grossly inaccurate.
People write millions of small C or Perl utilities all the time, to a
combined effect of less problem-solving than one big Java application.

The number of lines of code written in a language is also unfair,
because it takes more lines of C than of almost any other language to
solve most problems.

The number of CPU cycles spent running code that was written in a
given language is also unfair, because, for instance, Ruby code burns
more CPU cycles to do something than C code does, in the average case.

So, how do you define popularity?


From wfspotz at sandia.gov  Fri Sep 15 11:04:18 2006
From: wfspotz at sandia.gov (Bill Spotz)
Date: Fri, 15 Sep 2006 09:04:18 -0600
Subject: Finding dynamic libraries
Message-ID: <25F45089-D373-41D1-9ED9-9EC4F694E91B@sandia.gov>

Hi,

Is there a way to tell an executing python script where to look for  
dynamically-loaded libraries?

My situation is that that I am developing python wrappers for a large  
software project.  I create python wrappers with swig, and those  
extension modules link against dynamic libraries from the project.  I  
have many test scripts that I would like to be able to run *prior* to  
installing these libraries into a standard location.

I have tried altering the LD_LIBRARY_PATH and DYLD_LIBRARY_PATH  
environment variables, both by direct assignment of os.environ and by  
calling os.putenv(), but neither results in python being able to find  
my dynamic libraries.

Thanks in advance

** Bill Spotz                                              **
** Sandia National Laboratories  Voice: (505)845-0170      **
** P.O. Box 5800                 Fax:   (505)284-5451      **
** Albuquerque, NM 87185-0370    Email: wfspotz at sandia.gov **





From robert.kern at gmail.com  Thu Sep 14 11:57:46 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 14 Sep 2006 10:57:46 -0500
Subject: How do I converted a null (0) terminated string to a Python 
	string?
In-Reply-To: <1158248572.373909.53420@d34g2000cwd.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>	<mailman.66.1158218413.10491.python-list@python.org>	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>	<pan.2006.09.14.15.36.07.509974@gmx.net>
	<1158248572.373909.53420@d34g2000cwd.googlegroups.com>
Message-ID: <eebu5q$t6a$1@sea.gmane.org>

Michael wrote:
> I guess, I still don't see how this will work. I'm receiving a C
> zero-terminated string in my Python program as a 1K byte block (UDP
> datagram). If the string sent was "abc", then what I receive in Python
> is <a><b><c><0><garbage><garbage>...<last_garbage_byte>. How is Python
> going to know where in this 1K byte block the end of the string is? It
> seems that what I need to do is tell Python that the string ends at
> zero-relative index 3. What am I missing here?

Nothing. This is what I would do:


In [34]: s
Out[34]: 'abc\x00garbage'

In [35]: s.split('\x00', 1)[0]
Out[35]: 'abc'

In [36]: s.split?
Type:           builtin_function_or_method
Base Class:     <type 'builtin_function_or_method'>
String Form:    <built-in method split of str object at 0x6ada2c8>
Namespace:      Interactive
Docstring:
     S.split([sep [,maxsplit]]) -> list of strings

     Return a list of the words in the string S, using sep as the
     delimiter string.  If maxsplit is given, at most maxsplit
     splits are done. If sep is not specified or is None, any
     whitespace string is a separator.


Using the maxsplit argument saves split from having to do unnecessary work 
splitting the garbage portion if there are nulls there, too.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From duncan.booth at invalid.invalid  Thu Sep  7 17:00:09 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 7 Sep 2006 21:00:09 GMT
Subject: [ANN] IronPython 1.0 released today!
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.124.1157638824.5279.python-list@python.org>
	<1hlb5vp.yekzc115cn2k3N%rhymes@myself.com>
Message-ID: <Xns9837BD23B744Cduncanbooth@127.0.0.1>

rhymes at myself.com (Lawrence Oluyede) wrote:

> Felipe Almeida Lessa <felipe.lessa at gmail.com> wrote:
>> Does IronPython runs Twisted?
> 
> I really don't think so. They don't have many needed modules, like
> select :-)
> 

So? IronPython has a select module although it doesn't seem to be complete 
yet. The IronPython mailing list has discussions about getting CherryPy to 
run, and it sounds as though it isn't quite there yet, but it is getting 
there.


From martin at v.loewis.de  Wed Sep 13 11:44:35 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 13 Sep 2006 17:44:35 +0200
Subject: os.name under Win32
In-Reply-To: <mailman.15.1158142215.10491.python-list@python.org>
References: <44F8514E.4030004@mekensleep.com> <ed9kpp$305$1@sea.gmane.org>
	<mailman.15.1158142215.10491.python-list@python.org>
Message-ID: <45082764$0$16515$9b622d9e@news.freenet.de>

Igor Kravtchenko schrieb:
> Recently, someone advised me to use instead:
> platform.system()
> 
> that returns only 3 different strings: Java, Linux or Windows.  End of
> story.

That's not true:

ActivePython 2.4.1 Build 247 (ActiveState Corp.) based on
Python 2.4.1 (#1, Jun 20 2005, 17:18:51) [C] on sunos5
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform
>>> platform.system()
'SunOS'

In any case, the platform module is a more recent addition to Python;
so code using it may not work on older installations (unless you
ship the platform module with your application).

> Is this not supposed to work better than sys.platform?
> Indeed I'm pretty worried about having "win64" returned on further os
> like Windows Vista and having our tests failing again.

It won't. On Win64, sys.platform is still win32.

Regards,
Martin


From iker.arizmendi at gmail.com  Tue Sep 26 21:17:15 2006
From: iker.arizmendi at gmail.com (iker.arizmendi at gmail.com)
Date: 26 Sep 2006 18:17:15 -0700
Subject: releasing memory to malloc
In-Reply-To: <mailman.756.1159319311.10491.python-list@python.org>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
Message-ID: <1159319835.249502.65220@i3g2000cwc.googlegroups.com>

I can, but the extension is only a thin wrapper around a general
purpose C library which is also used independently of Python.

Iker

Gabriel Genellina wrote:

> Can you modify the C source? If you can, use the Python memory
> allocation functions PyMem_Malloc/PyMem_Realloc/PyMem_Free.
>
>
>
> Gabriel Genellina
> Softlab SRL
>
>
>
>
>
> __________________________________________________
> Pregunt?. Respond?. Descubr?.
> Todo lo que quer?as saber, y lo que ni imaginabas,
> est? en Yahoo! Respuestas (Beta).
> ?Probalo ya! 
> http://www.yahoo.com.ar/respuestas



From deets at nospam.web.de  Mon Sep 25 10:20:22 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 16:20:22 +0200
Subject: installation of python-dev
References: <4e4935ac0609241334p617d8fabq9f6ce1e30883ee38@mail.gmail.com>
	<mailman.567.1159191962.10491.python-list@python.org>
Message-ID: <4nq6t6FatrroU1@uni-berlin.de>

Fredrik Lundh wrote:

> Dominik M?ller wrote:
> 
>> I am running Python2.4.3; I need to install Python-dev (or does anybody
>> know an easier way to get distutils.core ? that's what I actually
>> need...).
> 
> umm.  distutils is part of the standard library, so it should be part of
> the core install. what platform are you using, and where did you get the
> 2.4.3 kit ?

I guess it is some linuxish system, as he talks about dev-packages.
Unfortunately, quite a few distros (debian based ones and Suse to my
knowledge) in fact remove distutils from the core and make it available as
extra devel package. For whatever reason...

diez


From interrayman at 163.com  Thu Sep 21 05:03:19 2006
From: interrayman at 163.com (yxh)
Date: Thu, 21 Sep 2006 17:03:19 +0800
Subject: how to use timer in python
Message-ID: <eetlv6$8jd$1@news.cn99.com>

how to use timer in python.
the functionnality is like the MFC SetTimer()




From python.list at tim.thechases.com  Thu Sep 21 10:26:20 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 21 Sep 2006 09:26:20 -0500
Subject: How to return an "not string' error in function?
In-Reply-To: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
Message-ID: <4512A10C.2050407@tim.thechases.com>

> def test(s):
>        if type(s) != ? :
>           return
> #So here I want establish a situation about that if <s> is not string
> #then <return>, but how should write the <?> ?
> #Or is there any other way to do it?

 >>> isinstance("hello", basestring)
True
 >>> isinstance(u"hello", basestring)
True

This will return true for both regular strings and for unicode 
strings.  If that's a problem, you can use

 >>> import types
 >>> isinstance("hello", types.StringType)
True
 >>> isinstance(u"hello", types.StringType)
False
 >>> isinstance("hello", types.UnicodeType)
False
 >>> isinstance(u"hello", types.UnicodeType)
True

...or, if you don't want to qualify them with "types." each time, 
you can use

 >>> from types import StringType, UnicodeType

to bring them into the local namespace.

HTH,

-tkc








From mikeowens at gmail.com  Tue Sep 12 15:53:00 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 14:53:00 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158083242.566897.180710@h48g2000cwc.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<1158078714.772319.52690@i42g2000cwa.googlegroups.com>
	<mailman.375.1158080942.5279.python-list@python.org>
	<1158083242.566897.180710@h48g2000cwc.googlegroups.com>
Message-ID: <df2316bd0609121253y4a67ca1cwa28ab4c3bd2544b5@mail.gmail.com>

On 12 Sep 2006 10:47:22 -0700, mensanator at aol.com <mensanator at aol.com> wrote:

> Why? I'm not requesting that dynamic typing be removed from
> sqlite. I'm not even requesting that the slander in the sqlite docs
> be removed. What I'm requesting is that these "features" of
> sqlite be better presented in the Python docs, hence, no posting
> to the sqlite list. Is that so hard to figure out?
>
> > Apparently,
> > you are too afraid to insult the SQLite community to its face, and
> > seek refuge on the Python list.
>
> I'm sure the sqlite community could care less about what appears
> in the Python documentation.

As a member of the SQLite community, your publicly denouncing SQLite
as "f***ing goofy", and it's creator as a crackpot, liar, and
slanderer, concerns at least me. And I would say that these comments
have no relation to what appears in the Python documentation.

In any case, I am thankful for these comments, as they speak volumes
about you. So much so, in fact, that I think neither you nor they pose
any real danger of being taken seriously by anyone new to Python or
SQLite. That being the case, I needn't continue with you.

If you ever want to have a constructive discussion about SQLite or any
of its features, or just need some general advice, please feel free to
join the mailing list. There are a lot of friendly people who would be
glad to help you out or consider to your suggestions.

Cheers.


From bkovitz at acm.org  Thu Sep 14 11:06:07 2006
From: bkovitz at acm.org (Ben Kovitz)
Date: 14 Sep 2006 08:06:07 -0700
Subject: Tkinter on Python 2.4 on Mac OS X?
In-Reply-To: <jwjw-4A259D.13195013092006@news.isp.giganews.com>
References: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>
	<1158164457.310716.207170@h48g2000cwc.googlegroups.com>
	<jwjw-4A259D.13195013092006@news.isp.giganews.com>
Message-ID: <1158246366.973809.206040@i42g2000cwa.googlegroups.com>


Bill Williams wrote:
>  "Ben Kovitz" <bkovitz at acm.org> wrote:
> >...I finally got the
> > "Hello World" program at http://docs.python.org/lib/node718.html to
> > work, but only under Python 2.3.
> >
> > Has anyone gotten Tkinter running with Python 2.4 on a Mac?
> >
> The Hello World example works for me. You have to save as applet, though.

Thanks for the suggestion, Bill!  I would never have guessed that it
would make a difference if you make your script an applet (that seems
very strange).  Now, here's a stupid question: how do you save as an
applet?  I know IDLE can do that, but my 2.4 IDLE is failing
because...Tkinter isn't working with Python 2.4 (same "spinning
beachball forever" as Hello World).  If you know a quick way to do it,
that would be great, before I go digging into the source code of IDLE.

Maybe this is a better question for me to ask:  *How* did you get
Python 2.4 running with Tkinter on OS X?

Ben Kovitz



From sheldon.regular at gmail.com  Thu Sep 21 16:47:50 2006
From: sheldon.regular at gmail.com (sheldon.regular at gmail.com)
Date: 21 Sep 2006 13:47:50 -0700
Subject: Printing UTF-8
Message-ID: <1158871670.714900.186500@m7g2000cwm.googlegroups.com>

I am new to unicode so please bear with my stupidity.

I am doing the following in a Python IDE called Wing with Python 23.

>>> s = "???"
>>> print s
??????
>>> print s
??????
>>> s
'\xc3\xa4\xc3\xb6\xc3\xbc'
>>> s.decode('utf-8')
u'\xe4\xf6\xfc'
>>> u = s.decode('utf-8')
>>> u
u'\xe4\xf6\xfc'
>>> print u.encode('utf-8')
??????
>>> print u.encode('latin1')
???

Why can't I get ??? printed from utf-8 and I can from latin1?  How
can I use utf-8 exclusivly and be able to print the characters?

I also did the same thing an the same machine in a command window...
ActivePython 2.3.2 Build 230 (ActiveState Corp.) based on
Python 2.3.2 (#49, Oct 24 2003, 13:37:57) [MSC v.1200 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> s = "???"
>>> print s
???
>>> s
'\x84\x94\x81'
>>> s.decode('utf-8')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
UnicodeDecodeError: 'utf8' codec can't decode byte 0x84 in position 0:
unexpected code byte
>>> u = s.decode('utf-8')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
UnicodeDecodeError: 'utf8' codec can't decode byte 0x84 in position 0:
unexpected code byte
>>>

Why such a difference from the IDE to the command window in what it can
do and the internal representation of the unicode?

Thanks,
Shel



From paolopantaleo at gmail.com  Thu Sep 21 12:20:07 2006
From: paolopantaleo at gmail.com (Paolo Pantaleo)
Date: Thu, 21 Sep 2006 18:20:07 +0200
Subject: Writing Video conference software for Windows
In-Reply-To: <1158684171.132741.143840@i42g2000cwa.googlegroups.com>
References: <mailman.265.1158667756.10491.python-list@python.org>
	<1158684171.132741.143840@i42g2000cwa.googlegroups.com>
Message-ID: <83e8215e0609210920x473b23d6u2283926d2891023@mail.gmail.com>

19 Sep 2006 09:42:51 -0700, Jordan <jordan.taylor2 at gmail.com>:
> If you're going to need win32 system access use the win32all python
> extension (very, very good extension).  Do you need single frame image
> capture, or constant video stream? PIL can be used for the first, it
> might also be usable for video, I'm not sure.
Well I need something like 5-10 fps. An issue is the comression
method: MPEG and friends aren't good (I think) for compressing stuff
with sharp borders. Maybe I could use A sequence of PNG images, but it
isn't a great solution.

For sound, python comes
> with some built in libraries, but you should also take a look at
> pysonic http://www.cs.unc.edu/Research/assist/developer.shtml.  For the
> bandwidth efficiency issue, what type of connection are you using? The
> socket module is quite capable of transmiting whatever data you have,
> so unless you're thinking of implementing some mini bittorrent like
> network in an attempt to save bandwidth I don't know what you can do
> about that. There's an extension called IPqueue which might give you
> somewhere to start for packet/bandwidth manipulation.  Check out The
> Vaults of Parnassus, which has a lot of stuff (including ogg/mp3
> converters last time a check).    Big question, is this supposed to act
> like a remote desktop, or just show what's happening?  Start by
> searching Google, it's very useful.
Well the bandwidth issue is most of all related to  video compression
(see above). Well maybe 256 kbps would be nice.

It should just show what's happening.


PAolo


From cliff at develix.com  Wed Sep 13 03:29:18 2006
From: cliff at develix.com (Cliff Wells)
Date: Wed, 13 Sep 2006 00:29:18 -0700
Subject: Python blogging software
Message-ID: <1158132558.3622.29.camel@devilbox>

There's been a lot of blogs started in Python, but given the recent
spate of web frameworks, I'm surprised that some blogging package hasn't
taken front seat yet.

I'm currently using Frog, and it's decent, but lacks some fundamental
features (tags for one).  Since Irmen is probably going to scrap it
anyway, I'm kind of fishing about for something new.

I've seen a few written in Zope/Plone, but they looked not quite
interesting enough given the resources it would take to run them.  At
least two were started in TurboGears but seem to have vaporized.

Anyone aware of any functional (doesn't need to be complete, beta is
fine) blog software written in Python?  

Regards,
Cliff
-- 



From fakeaddress at nowhere.org  Fri Sep 22 09:15:35 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 22 Sep 2006 13:15:35 GMT
Subject: Python Threading
In-Reply-To: <mailman.395.1158831488.10491.python-list@python.org>
References: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>
	<mailman.395.1158831488.10491.python-list@python.org>
Message-ID: <XlRQg.4076$e66.3998@newssvr13.news.prodigy.com>

Calvin Spealman wrote:
> I repeat this all the time, but the best advice I can give you about
> using threads is to not use threads at all.

Might as well get with the times and ignore that advice.

> I would point you to good
> references like Threads Considered Harmful
> (http://www.kuro5hin.org/story/2002/11/18/22112/860)

Note that it's "poster boy" for multiple processes
now uses multiple threads.

> and The Problem
> with Threads 
> (http://www.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-1.html
> - With Link to PDF).

The author's alternatives to threads are not available
in Python. Many Pythoners do similar things with threads,
such as use the message-passing style via the queue module.

> It might seem an inappropriate response to your
> question to simply tell you that you should not do what you are asking
> how to do, but its just the case that most often anyone without
> exposure to threads has little or no understanding on just how bad
> they are for many of the tasks they will be used for. Threads are
> difficult to control, impossible to predict, and simply one of the
> most over used, least understood causes of buggy, unmaintainable
> software in the whole spectrum of development techniques.

Threads require some study and understanding, but they work
great once one learns to use them.

> As alternatives, look into what tasks can spawn into other processes,

Unfortunately one cannot share Python objects between processes.
POSH may change that, but it looks to be stuck in alpha.

> asyncronous programming (a'la Twisted -
> http://www.twistedmatrix.com/),

I find asynchronous programming much harder to manage than
threads, except for fairly simple applications where neither
one is hard.

> and co-routine and similar facilities,
> such as the tasklets of Stackless and two-way generators now included
> with Python.

Those fail at simple things such as having two of them each
waiting at a blocking call.


-- 
--Bryan


From fccoelho at gmail.com  Wed Sep 27 14:17:12 2006
From: fccoelho at gmail.com (Flavio)
Date: 27 Sep 2006 11:17:12 -0700
Subject: f2py on windows tutorials
In-Reply-To: <mailman.812.1159377587.10491.python-list@python.org>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
	<mailman.504.1159044688.10491.python-list@python.org>
	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>
	<mailman.730.1159299369.10491.python-list@python.org>
	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>
	<efcddb$itm$1@sea.gmane.org>
	<mailman.753.1159314004.10491.python-list@python.org>
	<1159364285.218632.35040@h48g2000cwc.googlegroups.com>
	<mailman.812.1159377587.10491.python-list@python.org>
Message-ID: <1159381032.183790.39090@d34g2000cwd.googlegroups.com>

Hi Robert,

Good News,

I tried creating the setup.cfg as you suggested and ran

python setup.py bdist_wininst
and
python setup.py bdist_egg

both of them worked perfectly!!! compiled my Fortran extension, and
packed it up for distribution.
I have since installed and tested and it even works! isn't this great?

thanks for all the help you provided. I couldn't have done it without
it.

Cheers,

Fl?vio
Robert Kern wrote:
> Flavio wrote:
> > Ok,
> >
> > I tried that and it seems we are making progress
> >
> > so here is my command:
> >
> > python setup.py build_ext --compiler=mingw32 --fcompiler=gnu
> >
> > Now it is complaining about my pyf!!
> >
> > error: unknown file type '.pyf'
> >
> > here is my setup .py:
> >
> > import setuptools, os
> > from numpy.distutils.core import setup, Extension
> >
> > #Configuring Build
> > libs=[];libdirs=[];f2pyopts=[]
> > if os.name == 'nt':
> >     f2pyopts.extend(["--compiler=mingw32","--fcompiler=gnu"])
>
> These don't belong here. If you don't want to type them in at the command line,
> put them in a setup.cfg file next to your setup.py:
>
>
> [build_ext]
> compiler=mingw
> fcompiler=gnu
>
>
> (Note: "mingw", not "mingw32"!)
>
> > flib = Extension(name='flib',
> >                         libraries=libs,
> >                         library_dirs=libdirs,
> >                         f2py_options=f2pyopts,
> >
> > sources=['model-builder/Bayes/flib.f','model-builder/Bayes/flib.pyf',]
>
> The .pyf file needs to come first.
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From andy.terrel at gmail.com  Thu Sep  7 19:49:39 2006
From: andy.terrel at gmail.com (Andy Terrel)
Date: 7 Sep 2006 16:49:39 -0700
Subject: split string problems
In-Reply-To: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>
References: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>
Message-ID: <1157672979.271211.8850@i3g2000cwc.googlegroups.com>

try str(p).split()[2]

your class is using the __str__ attribute to print and I am guessing
that is what you are seeing.

Tempo wrote:
> Hey. I am trying to grab the prices from the string below but I get a
> few errors when I try to do it: Take a look at the code and error
> messages below for me and thanks you in advanced to all that help.
> Thank you. Here's the code & error messages:
>
> >>> p
> [<span class="sale">
> 					$14.99
> 				</span>, <span class="sale">
> 					$27.99
> 				</span>, <span class="sale">
> 					$66.99
> 				</span>, <span class="sale">
> 					$129.99
> 				</span>, <span class="sale">
> 					$254.99
> 				</span>]
> >>> p.split()[2]
>
> Traceback (most recent call last):
>   File "<pyshell#11>", line 1, in -toplevel-
>     p.split()[2]
> AttributeError: 'ResultSet' object has no attribute 'split'
> >>>



From mailer at forums.com  Fri Sep 15 15:02:19 2006
From: mailer at forums.com (Dean Card)
Date: Fri, 15 Sep 2006 12:02:19 -0700
Subject: Help on the deformer object
Message-ID: <YMCOg.17944$c07.15144@fed1read04>

I am trying to use a MESH transform from the Python Imaging Library and am 
having trouble defining my deformer object.  What I want to do is map one 
eight item tuple like
(x0, y0, x1, y1, x2, y2, x3, y3) to another set of points like
(x00, y00, x10, y10, x20, y20, x30, y30)

where (xn, yn) is a point.

>From the docs:
im.transform(size, MESH, data, filter) image => image
Similar to QUAD, but data is a list of target rectangles and corresponding 
source quadrilaterals.

What I need to know is the format that the MESH should be in... a list of 
target rectangles and corresponding source quadrilaterals???
[(x0, y0, x1, y1, x2, y2, x3, y3) , (x00, y00, x10, y10, x20, y20, x30, 
y30)] does not work.

Thanks.




From cvanarsdall at mvista.com  Wed Sep  6 18:00:58 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Wed, 06 Sep 2006 15:00:58 -0700
Subject: trackin down hard to find bugs
Message-ID: <44FF451A.9060200@mvista.com>

Hey all,

I have several scripts currently in a production environment.  Every two 
to three weeks or so our systems end up crashing.  Unfortunately the 
traceback's aren't enough for me to debug the problem, so I'm having an 
issue trying to determine what to do next.  The other issue is that 
these jobs are all run from various cron tasks from a server, so I don't 
have a console to attach pdb to when this system dies.  So far I'm not 
having any luck reproducing the issue either, so I need to bring in the 
big guns somehow.

When I played with C in college i remember that it was possible to 
compile the code with debugging support, then when something crashed I 
could load the core dump to gdb and work on the problem a little more.  
Is there any way to do this with python?  Are there any other 
suggestions for getting the state of the system after an exception so 
that I could piece things together and try to solve this thing?

TIA!

-carl



-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From antoine at vo.lu  Sat Sep 30 13:14:27 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Sat, 30 Sep 2006 19:14:27 +0200
Subject: builtin regular expressions?
In-Reply-To: <efm4se$mm2$1@mlucom4.urz.uni-halle.de>
References: <451e37a5$1@news.vo.lu>
	<87k63ly1gi.fsf@gmail.com>	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de>
	<877izlxsiy.fsf@gmail.com> <efm4se$mm2$1@mlucom4.urz.uni-halle.de>
Message-ID: <451ea5cc$1@news.vo.lu>

Just to get it clear at the beginning, I started this thread. I'm not a 
newbie (don't get me wrong, I don't see this as an insult whatsoever, 
after all, you couldn't know, and I appreciate it being so nice to 
newbies anyway). I'm not an expert either, but I'm quite comfortable 
with the language by now. It's just that, when I started Python I loved 
it for its simplicity and for the small amount of code it takes to get 
something done. So the idea behind my original post was that the 
Perl/Ruby way takes even less to type (for the regex topic of this 
discussion, I'm not generalizing), and that I like a lot. To me (and I 
may be alone) the Perl/Ruby way is more "beautiful" (Python  culture: 
Beautiful is better than ugly) than the Python way (in this particular 
case) and therefore I couldn't see the reasons.

Some of you say that this regex stuff is used rarely enough so that 
being verbose (and therefore more readable ?) is in these few cases the 
better choice. To me this a perfectly reasonable and maybe it is just 
true (as far as one can talk about true/false for something subjective 
as this). I dont' know (yet) ;-)

I just have to learn accept the fact that Python is more verbose more 
often than Ruby (I don't know Perl really). Don't get me wrong though, I 
know the benefits of this (at least in some cases) and I can understand 
that one opts for it. Hopefully I will end up some day preferring the 
Python way.

Thanks for your explanations.

Regards,
antoine

Mirco Wahab wrote:
> Thus spoke Jorge Godoy (on 2006-09-30 17:50):
>> Mirco Wahab <wahab at chemie.uni-halle.de> writes:
>>
>> I could make it shorter in Python as well.  But for a newbie that haven't seen
>> the docs for strings in Python I thought the terse version would be more
>> interesting. 
> 
> OK
> 
>> At least he'll see that there are methods to do what he wants already builtin
>> with the language.
> 
> OK
> 
>>> sub print_message {
>>>    if   (/^(track=)/ ){ print 'Your track is '   .substr($_, length $1)."\n" }
> ...
>> If I were writing in Perl I'd not use substr like this and would write code
>> similar to the one the OP posted (i.e., /^track=(.*)/).
> 
> Right, I actually tried to match your example as close as I could
> get and to use only *simple* Regexes (as stated below). What one
> really would do (as you probably meant above) is sth. like:
> 
>   sub print_message {
>      if   (/^track="(.+?)"/ ){ print "Your track is $1\n" }
>      ...
> 
> which has a "more complicated" regex that is usually
> not understood easily by newbies.
> 
>>> OK, I do Perl and Python side by side and didn't reach
>>> that point so far, maybe beause I read the Friedel-Book
>>>  ( http://www.oreilly.com/catalog/regex2/reviews.html )
>>> sometimes and actually *like* the concept of regular expressions.
>> I like them as well.  I just don't see the need to use them everywhere. :-) 
> 
> I like Python for its radically plain look, my
> underlying feeling of Python is: "Pascal", whereas
> Perl feels and tastes like "C" to me ;-)
> 
> Regards
> 
> Mirco


From nick at craig-wood.com  Mon Sep 11 12:30:06 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 11 Sep 2006 11:30:06 -0500
Subject: A cross platform systray icon
References: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>
	<4505702A.1080709@websafe.com>
Message-ID: <slrnegb1af.825.nick@irishsea.home.craig-wood.com>

Larry Bates <larry.bates at websafe.com> wrote:
>  Google turned this up.
> 
>  http://radio.weblogs.com/0110159/gems/systray_py.txt

I couldn't get that to work - wxwindows bitrot maybe?

I did find an example which worked under windows & linux

  http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/475155

Thanks anyway 

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From pavlovevidence at gmail.com  Thu Sep  7 22:45:17 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 7 Sep 2006 19:45:17 -0700
Subject: Positive lookahead assertion
In-Reply-To: <45007163$0$19744$88260bb3@free.teranews.com>
References: <45006ede$0$19734$88260bb3@free.teranews.com>
	<45007163$0$19744$88260bb3@free.teranews.com>
Message-ID: <1157683517.313024.140070@i42g2000cwa.googlegroups.com>

tobiah wrote:
> Sorry, I should have tried harder.  I see that the text
> of the match is simply not consumed, so that:
>
> 	m = re.search('(?=foo)fo', 'food')
>
> succeeds, while
>
> 	m = re.search('(?=fox)fo', 'food')
>
> does not.

They are more commonly used, and generally more useful, at the end of a
regexp:

m = re.search(r"foo(?=d)","food")

matches, but afterwards m.group(0)=="foo" (without the d).  Meanwhile,

m = re.search(r"foo(?=d)","fool")

doesn't match at all.

Carl Banks



From nospam at domain.tld  Fri Sep 29 01:56:48 2006
From: nospam at domain.tld (Stephan Kuhagen)
Date: Fri, 29 Sep 2006 07:56:48 +0200
Subject: Making sure script only runs once instance at a time.
References: <mailman.801.1159372327.10491.python-list@python.org>
Message-ID: <eficj1$1br$1@kohl.informatik.uni-bremen.de>

Hari Sekhon wrote:

> I have written a script and I would like to ensure that the script is
> never run more than once at any given time.
> 
> What is the best way of testing and exiting if there is another version
> of this script running somewhere on this machine?
> 
> I guess what I'm asking is how to handle system processes the way I can
> in shell. I am running this on linux.

Although the other solution suggested seems to be more general (I have not
read the code, only the info in the header), the following may be
sufficient for what you want, and can be used as code inside of your
script. It searches /proc/ for another process that is a script interpreted
by python and has the same name as your script. So it can fail, if there is
another python script running with the same name, but which is not
identical to your script. OTOH it's a very short and simple test:

-----
#!/bin/env python

import os.path
import linecache

pid=os.getpid()
script=linecache.getline(os.path.join('/proc', str(pid), 'cmdline'),
1).split('\0')[0:2]
for pid in filter(lambda x: x.isdigit() and x != str(pid),
os.listdir('/proc')):
  other=linecache.getline(os.path.join('/proc', str(pid), 'cmdline'),
1).split('\0')[0:2]
  if script[0] == other[0] and os.path.basename(script[-1]) ==
os.path.basename(other[-1]):
    raise "already running!"
-----

HTH
Stephan



From Peter.Beattie at web.de  Sun Sep 10 15:52:48 2006
From: Peter.Beattie at web.de (Peter Beattie)
Date: Sun, 10 Sep 2006 21:52:48 +0200
Subject: New SourceForge project: Diet Python!!!
In-Reply-To: <1153258882.836910.12820@s13g2000cwa.googlegroups.com>
References: <1153182157.538532.47180@m79g2000cwm.googlegroups.com>
	<e9jjk7$aof$1@atlantis.news.tpi.pl>
	<1153258882.836910.12820@s13g2000cwa.googlegroups.com>
Message-ID: <4mj8ohF6e4rfU1@uni-berlin.de>

TOFU sucks!

The Eternal Squire wrote:
> Best interface for roguelike gaming.
> 
> Jarek Zgoda wrote:
>> The Eternal Squire napisa?(a):
>>
>>> Diet Python is a flavor of Python with allegro, multiarray, umath,
>>> calldll, npstruct and curses builtin, all else nonessential to language
>>> ripped out. Total size < 3MB, 1% of PSF Python. Diet Python helps keep
>>> clients thin :)
>> Why do you think curses are essential? I'd rip out them too, they have
>> no use on Windows.
>>
>> -- 
>> Jarek Zgoda
>> http://jpa.berlios.de/


From sjmachin at lexicon.net  Sat Sep 23 20:47:23 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 17:47:23 -0700
Subject: assignment hook
In-Reply-To: <roy-8D8198.20201123092006@reader1.panix.com>
References: <1159055894.620401.181760@m7g2000cwm.googlegroups.com>
	<roy-8D8198.20201123092006@reader1.panix.com>
Message-ID: <1159058843.059592.190060@h48g2000cwc.googlegroups.com>


Roy Smith wrote:
> paul.lafollette at gmail.com wrote:
> > Kind people,
> > Is there any way one can, within Python, intercept the act of
> > assignment.
>
> Sure.  You just need to define a __setattr__() method for your class.  See
> http://docs.python.org/ref/attribute-access.html for details.

Is it possible that at least one of you has the concepts of
"assignment" and "binding" a little mixed?

>
> > For instance, suppose that I was obsessed with
> > FORTRAN II, and decided that I wanted to print a warning,
> > or raise an exception any time someone assigned an int to a
> > variable whose name did not start with i,j,k,l,m, or n.
>
> Well, you know the old joke, "You can write Fortran in any language" :-)

Yes, but it's a bit difficult to express old FORTRAN jokes in another
language:

real = float
integer = int
assert isinstance(God, real) and isinstance(Jesus, integer)

Cheers,
John



From davidh at ilm.com  Tue Sep  5 14:54:18 2006
From: davidh at ilm.com (David Hirschfield)
Date: Tue, 05 Sep 2006 11:54:18 -0700
Subject: Getting text into the copy-paste buffer...
Message-ID: <44FDC7DA.30109@ilm.com>

Strange request, but is there any way to get text into the linux 
copy-paste buffer from a python script ?

I know the standard python libraries won't have that functionality 
(except as a side-effect, perhaps?), but is there a simple trick that 
would do it on linux? A command line to get text into the buffer? Using 
a gui toolkit as a proxy to get text in there?

I actually have a need for this, though it sounds bizarre,
thanks in advance,
-Dave

-- 
Presenting:
mediocre nebula.



From torerik81 at gmail.com  Thu Sep 14 05:13:59 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Thu, 14 Sep 2006 11:13:59 +0200
Subject: Why not event-driven packages in other than the main thread?
Message-ID: <eeb6go$kfk$1@news.uit.no>

Hi,

I've developed an application were I've used Tkinter for the GUI.
When I ran the GUI in another thread than the main, it kept locking
up.
I experienced similar problems with Twisted.

Both of these tools are event-based, so I guess that is the root of the 
problem...

But could anyone tell me why running these in a thread other than the 
main one doesn't work?

regards


From martin at v.loewis.de  Sun Sep 17 14:47:18 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 17 Sep 2006 20:47:18 +0200
Subject: Hardlinks on NTFS
In-Reply-To: <mailman.209.1158517913.10491.python-list@python.org>
References: <450D81BB.20005@freakmail.de>
	<mailman.209.1158517913.10491.python-list@python.org>
Message-ID: <450D9836.8020603@v.loewis.de>

Calvin Spealman schrieb:
>> I'm thinking of letting my program create hardlinks (or symlinks). I
>> know python allows doing this for ext, reiser and the like, but
>> apparently not for ntfs systems.
>> Is there any package out there that lets me create links in a platform
>> independent way?
>>
> 
> Why isn't NTFS handled the same as any other hardlink supporting
> filesystem? Is it a choice or a bug?

There is no link(2) system call on Win32, hence os.link does not
exist on Windows. The file system really has no impact here;
all file systems on a system are handled uniformly. The operating
system is what matters: Python would allow hard links on NTFS
if the operating system is Linux, and would not allow hard links
on ext2 if the operating system is Windows XP.

Windows supports a CreateHardLink API call since Windows 2000.
Python could use that system call to create hard links on Win32;
with the Win32 extensions, win32file.CreateHardLink can be used
to do so.

It would be possible to implement os.link using CreateHardLink.
This isn't done because nobody has contributed the code to do
so. For previous versions, care would be necessary to not break
Windows 9x (which does not have CreateHardLink); for Python 2.6,
this requirement could be dropped. Contributions are welcome.

Regards,
Martin


From michael at stroeder.com  Mon Sep  4 06:47:43 2006
From: michael at stroeder.com (=?ISO-8859-1?Q?Michael_Str=F6der?=)
Date: Mon, 04 Sep 2006 12:47:43 +0200
Subject: working with ldap files
In-Reply-To: <1157119067.915441.219160@m79g2000cwm.googlegroups.com>
References: <1157119067.915441.219160@m79g2000cwm.googlegroups.com>
Message-ID: <grcts3-k4n.ln1@nb2.stroeder.com>

flit wrote:
> 
> I am struggling with some ldap files.

More general you are struggling with multiple attribute values of DN
syntax stored in a single field of a CSV file.

> I am using the csv module to work with this files (I exported the ldap
> to a csv file).

I guess you have MS AD and used MS tools for CSV export.

> I have this string on a field
> CN=pointhairedpeoplethatsux,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com;CN=pointhairedboss,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com
> this string is all the groups one user has membership.

It seems they are using ; as a delimiter for multi-valued attributes in
a single CSV field. Note that ; is also a special character for
LDAPv2-DNs. So a naive parsing will fail under special circumstances.

I'd recommend to export your data as LDIF and use the module 'ldif' from
python-ldap to extract the entry records. You can use this module
separately simply by placing the file ldif.py under site-packages/ if
you don't need the rest of python-ldap.

> So what I am trying to do.
> read this string
> and extract only the CNs

This is another issue.

Note that in general DN parsing is more complex than simply using
string.split(). If you are sure that all the attribute values used in
your DNs don't have any special chars you could use string.split(). But
you should definitely cross-check with RFC 4514 or use a decent DN parser.

Ciao, Michael.


From usenet at vfx.org.uk  Thu Sep 28 08:59:48 2006
From: usenet at vfx.org.uk (Mike Playle)
Date: Thu, 28 Sep 2006 13:59:48 +0100
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.816.1159378120.10491.python-list@python.org>
Message-ID: <pan.2006.09.28.12.59.44.871099@vfx.org.uk>

On Wed, 27 Sep 2006 12:21:08 -0500, Robert Kern wrote:

> Mike Playle wrote:
>> For instance a customer might want to buy a license to
>> use your software on up to 5 machines at once, but still
>> have the software installed on every machine in the
>> company. License systems like FlexLM can work here, to
>> make it easier for them to ensure that they comply with
>> the terms of the license.
> 
> But then you must weigh that against the inconvenience that you impose upon your 
> customers. Although you may make it easier for them to comply with your license, 
> you are also making it harder for them to *use* your software.

This is certainly true.

As with any other software feature it's vital to weigh up the
advantages against the disadvantages, and not blindly add
features which don't provide a clear overall benefit.

> I do not know a single person who has used FlexLM-licensed software and does not 
> hate FlexLM with a burning passion.

Yup, I can agree with that. From the POV of the guy who just
wants to get some work done, it's usually a real pain.

His boss may have a different view of the matter, though.
I've met people who've _bought_ FlexLM-licensed software
who think it's the best thing since sliced bread.

Mike



From justin.mailinglists at gmail.com  Thu Sep 14 00:48:27 2006
From: justin.mailinglists at gmail.com (Justin Ezequiel)
Date: 13 Sep 2006 21:48:27 -0700
Subject: FtpUtils Progress Bar
References: <1158200735.698563.93380@i42g2000cwa.googlegroups.com>
Message-ID: <1158209307.005541.42470@b28g2000cwb.googlegroups.com>

iwcook58 at gmail.com wrote:
>
> Does anyone have an example on how to show the progress of the
> upload/download when using ftputil?
>

haven't used ftputil in quite a while ...
but using ftplib...

import ftplib

class Callback(object):
    def __init__(self, totalsize, fp):
        self.totalsize = totalsize
        self.fp = fp
        self.received = 0

    def __call__(self, data):
        self.fp.write(data)
        self.received += len(data)
        print '\r%.3f%%' % (100.0*self.received/self.totalsize),

if __name__ == '__main__':
    host = 'ftp.microsoft.com'
    src = '/deskapps/games/public/Hellbender/heltrial.exe'
    c = ftplib.FTP(host)
    c.login()
    size = c.size(src)
    dest = 'heltrial.exe'
    f = open(dest, 'wb')
    w = Callback(size, f)
    c.set_pasv(0)
    c.retrbinary('RETR %s' % src, w, 32768)
    f.close()
    c.quit()



From ajones1 at gmail.com  Thu Sep  7 17:30:25 2006
From: ajones1 at gmail.com (Adam Jones)
Date: 7 Sep 2006 14:30:25 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
Message-ID: <1157664625.894546.34760@i42g2000cwa.googlegroups.com>


Francach wrote:
> Hi,
>
> I'm trying to use the Beautiful Soup package to parse through the
> "bookmarks.html" file which Firefox exports all your bookmarks into.
> I've been struggling with the documentation trying to figure out how to
> extract all the urls. Has anybody got a couple of longer examples using
> Beautiful Soup I could play around with?
>
> Thanks,
> Martin.

If the only thing you want out of the document is the URL's why not
search for: href="..." ? You could get a regular expression that
matches that pretty easily. I think this should just about get you
there, but my regular expressions have gotten very rusty.

/href=\".+\"/



From wildemar at freakmail.de  Tue Sep 12 16:34:12 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Tue, 12 Sep 2006 22:34:12 +0200
Subject: Ideas on interconnecting objects? (was: "filtered view" upon lists?)
In-Reply-To: <45070F74.3000706@holdenweb.com>
References: <mailman.337.1158062350.5279.python-list@python.org>	<878xkpb5wa.fsf@gmail.com>	<4506D471.7010905@freakmail.de>
	<ee6nre$atu$1@sea.gmane.org> <450705F0.8050002@freakmail.de>
	<45070F74.3000706@holdenweb.com>
Message-ID: <450719C4.3020802@freakmail.de>

> That's all very well, but you might want to Google for "YAGNI".
:)

> You still haven't given us mcuh of a clue about the real need.
There is no "real need". I'm trying things, looking what works out 
eventually. I don't do that for a living (if I did, I'd be starved by now).
Or do you mean the real use case? Because that I did do. There really 
isn't anything more to it.

Ok, maybe there is (though I still think it boils down to what I have 
said before):
I have objects, called Ideas. Ideas have IDs, used as primary keys in a 
berkeley database. I want to connect them with connections that have a 
'type', may or may not have a 'direction' and may or may not have a 
'context'. I want to avoid storing the connections as separate database 
objects (lets for now just accept that).

So I decided to store connections as lists of tuples inside Ideas:
[(ID, type, direction, context), (ID, type, direction, context), ...]
Those I want to Filter.

I'll gladly take any advice on how to do it better; mind you however 
that the only data structure the db is supposed to deal with is the 'Idea'.

Again: I find this hard to explain, so I should probably rethink the 
whole thing. ;)

wildemar


From mahs at telcopartners.com  Tue Sep  5 20:23:14 2006
From: mahs at telcopartners.com (Michael Spencer)
Date: Tue, 05 Sep 2006 17:23:14 -0700
Subject: replace deepest level of nested list
In-Reply-To: <_CXKg.1654$m36.1292@trnddc02>
References: <5lWKg.17116$CL6.8808@trnddc06> <_CXKg.1654$m36.1292@trnddc02>
Message-ID: <edl4d5$mt0$1@sea.gmane.org>

David Isaac wrote:
> Thanks to both Roberto and George.
> I had considered the recursive solution
> but was worried about its efficiency.
> I had not seen how to implement the numpy
> solution, which looks pretty nice.
> 
> Thanks!
> Alan
> 
> 
You could also use pyarray, which mimics numpy's indexing, but uses native 
python lists as the data store.

So...

 >>> from pyarray import ndlist
 >>> source = 
ndlist([[['r00','g00','b00'],['r01','g01','b01']],[['r10','g10','b10'],['r11','g11'
... ,'b11']]])
 >>> source
array([[[r00, g00, b00],
         [r01, g01, b01]],

        [[r10, g10, b10],
         [r11, g11, b11]]])
 >>> source[...,0]  # note elipsis means skip all but the last dimension
array([[r00, r01],
        [r10, r11]])
 >>> _.tolist()
[['r00', 'r01'], ['r10', 'r11']]
 >>>

pyarray (single pure-python module) can be downloaded from:

http://svn.brownspencer.com/pyarray/trunk/

Regards

Michael





From jon+usenet at unequivocal.co.uk  Mon Sep 25 10:50:32 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 14:50:32 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
Message-ID: <slrnehfr5g.6tm.jon+usenet@snowy.squish.net>

In article <Xns98499CF9DCEE4duncanbooth at 127.0.0.1>, Duncan Booth wrote:
> I guess you've never seen anyone write tests which retrieve some generated 
> html and compare it against the expected value. If the page contains any 
> unescaped quotes then this change would break it.

You're right - I've never seen anyone do such a thing. It sounds like
a highly dubious and very fragile sort of test to me, of very limited
use.

> I'm talking about encoding certain characters as entity references. It 
> doesn't matter whether its the character ampersand or right double quote, 
> they both want to be converted to entities. Same operation.

This is that muddled thinking I was talking about. They are *not* the
same operation. You want to encode "<", for example, because it must
always be encoded to prevent it being treated as an HTML control
character. This has nothing to do with character encodings.

You might sometimes want to escape "right double quote" because it may
or may not be available in the character encoding you using to output
to the browser. Yes, this might sometimes seem a bit similar to the
"<" escaping described above, because one of the ways you could avoid
the character encoding issue would be to use numeric entities, but it
is actually a completely separate issue and is none of the business of
cgi.escape.

By your argument, cgi.escape should in fact escape *every single*
character as a numeric entity, and even that wouldn't work properly
since "&", "#", ";" and the digits might not be in their usual
positions in the output encoding.

> Right now the only way the Python library gives me to do the entity
> escaping properly has a side effect of encoding the string. I should
> be able to do the escaping without having to encode the string at
> the same time.

I'm getting lost here - the opposite of what you say above is true.
cgi.escape does the escaping properly (modulo failing to escape
quotes) without encoding.


From gagsl-py at yahoo.com.ar  Wed Sep 20 20:33:50 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 21:33:50 -0300
Subject: Trying to run an external program
In-Reply-To: <989A9793-FB9F-4E94-AFFF-4CB175231869@mac.com>
References: <989A9793-FB9F-4E94-AFFF-4CB175231869@mac.com>
Message-ID: <7.0.1.0.0.20060920213113.05875068@yahoo.com.ar>

At Wednesday 20/9/2006 19:49, Brant Sears wrote:

>Hi. I'm new to Python and I am trying to use the latest release (2.5)
>on Windows XP.
>
>What I want to do is execute a program and have the results of the
>execution assigned to a variable. According to the documentation the
>way to do this is as follows:
>
>import commands
>x = commands.getstatusoutput('dir')

According to the documentation:
Availability: Unix.

Try the subprocess module, which intents to replace it.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From __peter__ at web.de  Tue Sep 19 08:00:48 2006
From: __peter__ at web.de (Peter Otten)
Date: Tue, 19 Sep 2006 14:00:48 +0200
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<4na377F9esroU1@uni-berlin.de>
Message-ID: <eeom2s$586$02$2@news.t-online.com>

Diez B. Roggisch wrote:

> bearophileHUGS at lycos.com wrote:
> 
>> Others have already told you the most important things.
>> 
>> There is another secondary advantage: the code inside a function runs
>> faster (something related is true for C programs too). Usually this
>> isn't important, but for certain programs they can go 20%+ faster.
> 
> I totally fail to see why that should be the case - for python as well as
> for C.
> 
> So - can you explain that a bit more, or provide resources to read up on
> it?

A trivial example (for Python):

$ cat main.py
def main():
    x = 42
    for i in xrange(1000000):
        x; x; x; x; x; x; x; x; x; x
        x; x; x; x; x; x; x; x; x; x
        x; x; x; x; x; x; x; x; x; x

main()
$ time python main.py

real    0m0.874s
user    0m0.864s
sys     0m0.009s
$ cat nomain.py
x = 42
for i in xrange(1000000):
    x; x; x; x; x; x; x; x; x; x
    x; x; x; x; x; x; x; x; x; x
    x; x; x; x; x; x; x; x; x; x
$ time python nomain.py

real    0m2.154s
user    0m2.145s
sys     0m0.009s
$

Now let's verify that global variables are responsible for the extra time:

$ cat main_global.py
def main():
    global i, x
    x = 42
    for i in xrange(1000000):
        x; x; x; x; x; x; x; x; x; x
        x; x; x; x; x; x; x; x; x; x
        x; x; x; x; x; x; x; x; x; x

main()
$ time python main_global.py

real    0m2.002s
user    0m1.995s
sys     0m0.007s


Peter



From rdiaz02 at gmail.com  Tue Sep 12 20:24:12 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Wed, 13 Sep 2006 02:24:12 +0200
Subject: Help me use my Dual Core CPU!
In-Reply-To: <450730C4.8020408@mvista.com>
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
Message-ID: <624934630609121724w3eb0439cvda1ff9fb9105995a@mail.gmail.com>

On 9/13/06, Carl J. Van Arsdall <cvanarsdall at mvista.com> wrote:
> Cameron Laird wrote:
> > Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:

(...)
> >> | other types of concurrency which I might be able to use. I really like
> >> | the PyLinda approach
> >>

(...)
> >                       .
> > Me, too.  I'd love to talk over Linda with other aficionados,
> > and/or hunt together for an excuse to use her/it.
> >
> Funny you should mention that.  I've had PyLinda opened in firefox for a
> couple days waiting to be read about.  I have a large distributed system
> I'm hoping to use PyLinda for, or at least I hope PyLinda will help me with.

You might also want to check

http://www.lindaspaces.com/products/NWS_overview.html

by the guys who "invented" Linda.


(The Oz language/Mozart system is a good example of a different and
very neat approach to concurrency; somewhat similar Python solutions
can be found at Kamaelia and Candygram. Links and other stuff at:

http://codepoetics.com/wiki/index.php?title=Topics:CTM_in_other_languages#Concurrency_in_Python
)

-- 
Ramon Diaz-Uriarte
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From mahs at telcopartners.com  Thu Sep  7 15:52:16 2006
From: mahs at telcopartners.com (Michael Spencer)
Date: Thu, 07 Sep 2006 12:52:16 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157638136.370020.289690@b28g2000cwb.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>	<mailman.86.1157565197.5279.python-list@python.org>	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>	<mailman.98.1157578665.5279.python-list@python.org>	<1157599243.076703.180740@p79g2000cwp.googlegroups.com>	<mailman.110.1157604877.5279.python-list@python.org>
	<1157638136.370020.289690@b28g2000cwb.googlegroups.com>
Message-ID: <edptcq$kb4$1@sea.gmane.org>

George Sakkis wrote:
> Michael Spencer wrote:
>> George Sakkis wrote:
>>> Michael Spencer wrote:
>>>
>>>> def chunker(s, chunk_size=3, sentry=".", keep_first = False, keep_last = False):
>>>>      buffer=[]
>> ...
>>> And here's a (probably) more efficient version, using a deque as a
>>> buffer:
>>>
>> Perhaps the deque-based solution is more efficient under some conditions, but
>> it's significantly slower for all the cases I tested:
> 

> As it turns out, none of chunk_size,
> words_per_group and word_length are taken into account in your tests;
> they all have their default values.

Hello George

Yep, you're right, the test was broken.  chunkerGS beats chunkerMS handily, in 
some cases, in particular for large chunk_size.


> Second, the output of the two functions is different, so you're not
> comparing apples to apples:

And, to be fair, neither meets the OP spec for joined output

 > Third, and most important for the measured difference, is that the
 > performance hit in my function came from joining the words of each
 > group (['check', 'if', 'it'] -> 'check if it') every time it is
 > yielded. If the groups are left unjoined as in Michael's version, the
 > results are quite different:


Second and Third are basically the same point i.e., join dominates the 
comparison. But your function *needs* an extra join to get the OP's specified 
output.

I think the two versions below each give the 'correct' output wrt to the OP's 
single test case.  I measure chunkerMS2 to be faster than chunkerGS2 across all 
chunk sizes, but this is all about the joins.

I conclude that chunkerGS's deque beats chunkerMS's list for large chunk_size (~ 
 >100).  But for joined output, chunkerMS2 beats chunkerGS2 because it does less 
joining.

 > if you're going to profile something, better use the
 > standard timeit module
...
OT: I will when timeit grows a capability for testing live objects rather than 
'small code snippets'.  Requiring source code input and passing arguments by 
string substitution makes it too painful for interactive work.  The need to 
specify the number of repeats is an additional annoyance.


Cheers

Michael


#Revised functions with joined output, per OP spec

def chunkerMS2(s, chunk_size=3, sentry=".", keep_first = False, keep_last = False):
     buffer=[]
     sentry_count = 0

     for item in s:
         buffer.append(item)
         if item == sentry:
             sentry_count += 1
             if sentry_count < chunk_size:
                 if keep_first:
                     yield " ".join(buffer)
             else:
                 yield " ".join(buffer)
                 del buffer[:buffer.index(sentry)+1]

     if keep_last:
         while buffer:
             yield " ".join(buffer)
             del buffer[:buffer.index(sentry)+1]

def chunkerGS2(seq, sentry='.', chunk_size=3, keep_first=False,
keep_last=False):
     def format_chunks(chunks):
         return " . ".join(' '.join(chunk) for chunk in chunks) + " ."
     iterchunks = itersplit(seq,sentry)
     buf = deque()
     for chunk in islice(iterchunks, chunk_size-1):
         buf.append(chunk)
         if keep_first:
             yield format_chunks(buf)
     for chunk in iterchunks:
         buf.append(chunk)
         yield format_chunks(buf)
         buf.popleft()
     if keep_last:
         while buf:
             yield format_chunks(buf)
             buf.popleft()






From sjdevnull at yahoo.com  Mon Sep 25 12:33:06 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 25 Sep 2006 09:33:06 -0700
Subject: what is the best practice to separate Pygtk and long running
	thread code
In-Reply-To: <1158998677.988792.268000@i42g2000cwa.googlegroups.com>
References: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
	<1158958212.238667.275240@m7g2000cwm.googlegroups.com>
	<1158998677.988792.268000@i42g2000cwa.googlegroups.com>
Message-ID: <1159201986.839384.230780@m73g2000cwd.googlegroups.com>

seb wrote:
> Hi,
>
> I am running on WinXP so that is not so convenient to communicate
> between separate processes.

Can you elaborate?

Windows offers plenty of IPC possibilities, including interprocess
mutexes and semaphores. See for instance:
http://www.codeproject.com/threads/Win32IPC.asp

In the past I've used multiple processes under Python with
activepython's win32pipe for IPC without problems.



From ldo at geek-central.gen.new_zealand  Mon Sep 25 23:41:30 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 15:41:30 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<mailman.570.1159194107.10491.python-list@python.org>
Message-ID: <efa7ff$pr2$2@lust.ihug.co.nz>

In message <mailman.570.1159194107.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Max M wrote:
> 
>> It also makes the  escaped html harder to read for standard cases.
> 
> and slows things down a bit.
> 
> (cgi.escape(s, True) is slower than cgi.escape(s), for reasons that are
> obvious for anyone who's looked at the code).

What you're doing is adding to the reasons why the existing cgi.escape
function is stupidly designed and implemented. The True case is by far the
most common, so to make that the slow case, as well as being the
non-default case, is doubly brain-dead.


From robert.kern at gmail.com  Tue Sep 26 19:34:07 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 26 Sep 2006 18:34:07 -0500
Subject: f2py on windows tutorials
In-Reply-To: <1159303874.746238.142120@h48g2000cwc.googlegroups.com>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>	<mailman.504.1159044688.10491.python-list@python.org>	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>	<mailman.730.1159299369.10491.python-list@python.org>
	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>
Message-ID: <efcddb$itm$1@sea.gmane.org>

Flavio wrote:
> Thank you Robert,
> 
> I was surprised that the setup.py was virtually identical to the one I
> use for Linux. However I was not at all surprised when it didn't work.
> ;-)
> 
> It complains it can't find msvc:
> 
> No module named msvccompiler in numpy.distutils, trying from
> distutils..
> error: the .NET Framework SDK needs to be installed before building
> extensions for Python.
> 
> any further help will be greatly appreciated...

 From my previous post:
Did you pass "--compiler=mingw --fcompiler=gnu" to your build command?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From cjlesh at gmail.com  Mon Sep 11 15:34:22 2006
From: cjlesh at gmail.com (cjl)
Date: 11 Sep 2006 12:34:22 -0700
Subject: Running python from a usb drive
In-Reply-To: <1158001296.005787.317950@m73g2000cwd.googlegroups.com>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
Message-ID: <1158003262.592863.138430@p79g2000cwp.googlegroups.com>

Jordan:

Thank you for your reply.

> If making a usb version of python was that easy, movable python would
> be open source.

I knew about movable python, but I'm not using it because it's not open
source. I guess those guys but some work into it, and feel like a small
fee is appropriate, but I guess I would rather use something open, even
if it means I have to make it myself.

> Copying the Python24 directory is a good start, but doesn't include the
> enormous number of registry keys that are included in the install and
> are probably needed for the complete capabilites of python.

Is the source of the windows python installer available? I guess I
could see what registry keys they are setting...

> Environmental Variables? Try setting the user/system variable "pythonpath"

I do set pythonpath, see above.

Any other ideas?

Thanks again,
CJL



From gagsl-py at yahoo.com.ar  Thu Sep 28 00:01:13 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 01:01:13 -0300
Subject: Extra Newby question - Trying to create md5 File Listing
In-Reply-To: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@
	lifeway.com>
References: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@lifeway.com>
Message-ID: <7.0.1.0.0.20060928005759.0562e5e0@yahoo.com.ar>

At Wednesday 27/9/2006 11:50, James Johnston wrote:

>fl = file(fileconfig,'r')
>fileData = fl.read()
>
>for f1 in glob.glob(fileData):
>   filelist = f1

Here, filelist is overwritten each time with another file name; the 
last one survives. A few lines later you iterate thru filelist - in 
fact, you are iterating along the *letters* in the file name, that 
explains your error that "c" doesn't exist.

Just say: filelist = glob.glob(fileData)


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From esj at harvee.org  Fri Sep 29 16:25:44 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 16:25:44 -0400
Subject: another distutils question
In-Reply-To: <451D7FC4.9090003@harvee.org>
References: <efjmjp$mr2$1@sea.gmane.org>	<efjpma$16d$1@sea.gmane.org>	<451D753E.7060707@harvee.org>	<efjsuo$d73$1@sea.gmane.org>	<451D7994.40100@harvee.org>	<efju33$h88$1@sea.gmane.org>
	<451D7FC4.9090003@harvee.org>
Message-ID: <efjvgm$kqg$2@sea.gmane.org>

Eric S. Johansson wrote:
> So what I have seen so far says that to be able to take data from a 
> series of directories scatter it to other directories may be out of 
> scope.  It's okay.  If I have to write a wrapper, it won't be the first 
> time.

do'h.

http://docs.python.org/dist/node13.html



From danb_83 at yahoo.com  Thu Sep 28 13:29:23 2006
From: danb_83 at yahoo.com (Dan Bishop)
Date: 28 Sep 2006 10:29:23 -0700
Subject: Resuming a program's execution after correcting error
In-Reply-To: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
References: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
Message-ID: <1159464563.345157.276430@i42g2000cwa.googlegroups.com>

Sheldon wrote:
> Hi.
>
> Does anyone know if one can resume a python script at the error point
> after the error is corrected?
> I have a large program that take forever if I have to restart from
> scratch everytime. The error was the data writing a file so it seemed
> such a waste if all the data was lost and must be recalculated again.

Afaik, the best you can do is run the script with "python -i", which
will give you an interactive prompt from which you have access to the
module-level variables.  Or even better, test your script with small
data sets, and do the real calculations only after you've fixed any
obvious bugs.



From bignose+hates-spam at benfinney.id.au  Tue Sep 26 18:26:04 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 27 Sep 2006 08:26:04 +1000
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <87k63qnu2r.fsf@benfinney.id.au>

John Salerno <johnjsal at NOSPAMgmail.com> writes:

> But what if you are an expert Python program and have zero clue
> about other languages? Can you still earn a living that way, or do
> most/all companies require multiple language proficiency?

I certainly wouldn't hire someone, for any programming team I've been
a part of, who claimed to be an "expert" in one language but knew
little about anything else.

Most of the value I get from "expert" programmers is their broad
knowledge of many topics, techniques, and *tools*.

-- 
 \      "An idea isn't responsible for the people who believe in it."  |
  `\                                    -- Donald Robert Perry Marquis |
_o__)                                                                  |
Ben Finney



From jstroud at mbi.ucla.edu  Wed Sep 13 05:05:08 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 13 Sep 2006 09:05:08 GMT
Subject: table (ascii text) lin ayout recognition
In-Reply-To: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
References: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
Message-ID: <8RPNg.748$TV3.408@newssvr21.news.prodigy.com>

vbfoobar at gmail.com wrote:
> Hello,
> 
> I am looking for python code useful to process
> tables that are in ASCII text. The code must
> determine where are the columns (fields).
> Concerned tables for my application are various,
> but their columns are not very complicated
> to locate for a human, because even
> when ignoring the semantic of  words,
> our eyes see vertical alignments
> 
> Here is a sample table (must be viewed
> with fixed-width font to see alignments):
> =================================
> 
> 44544      ipod          apple     black         102
> GFGFHHF-12 unknown thing bizar     brick mortar  tbc
> 45fjk      do not know   + is less               biac
>            disk          seagate   250GB         130
> 5G_gff                   tbd       tbd
> gjgh88hgg  media record  a and b                 12
> hjj        foo           bar       hop           zip
> hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
> qdsd       zert                    nope          nope
> 
> =================================
> 
> I want the python code that builds a representation
> of this table (for exemple a list of lists, where each list
> represents a table line, each element of the list
> being a field value).
> 
> Any hints?
> thanks
> 

As promised. I call this the "cast a shadow" algorithm for table 
discovery. This is about as obfuscated as I could make it. It will be up 
to you to explain it to your teacher ;-)

Assuming the lines are all equal width (padded right with space) e.g.:

def rpadd(lines):
   """
   Pass in the lines as a list of lines.
   """
   lines = [line.rstrip() for line in lines]
   maxlen = max([len(line) for line in lines])
   return [line + ' ' * (maxlen - len(line)) for line in lines]


In which case, you can:


binary = [[((s==' ' and 2) or 1) for s in line] for line in lines]
shadow = [1 in c for c in zip(*binary)]

isit = False
indices = []
for i,v in enumerate(shadow):
   if v is not isit:
     indices.append(i)
     isit = not isit

indices.append(i+1)

indices = [t for t in zip(indices[::2],indices[1::2])]

columns = [[line[t[0]:t[1]].strip() for line in lines] for t in indices]


In case you want rows:

rows = zip(*columns)


James


From http  Mon Sep 25 04:14:35 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 01:14:35 -0700
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org>
	<7xy7s8crty.fsf@ruckus.brouhaha.com>
	<45178f23$0$19894$4d3efbfe@news.sover.net>
Message-ID: <7xwt7suzv8.fsf@ruckus.brouhaha.com>

Leif K-Brooks <eurleif at ecritters.biz> writes:
> It requires a fairly large change to code and API for a relatively
> uncommon problem. How often do you need to know how many bytes an
> encoded Unicode string takes up without needing the encoded string
> itself?

Shrug. I don't see a real large change--the code would just check for
an optional arg and process accordingly.  I don't know if the issue
comes up often enough to be worth making such accomodations for.  I do
know that we had an extensive newsgroup thread about it, from which
this discussion came, but I haven't paid that much attention.


From jstroud at mbi.ucla.edu  Fri Sep 22 05:35:28 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 09:35:28 GMT
Subject: Building things with setup.py
In-Reply-To: <451368E9.10901@v.loewis.de>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<451368E9.10901@v.loewis.de>
Message-ID: <A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>

Martin v. L?wis wrote:
> James Stroud schrieb:
>> This is annoying. I am trying to build scipy right now but every .so
>> file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl -shared"
>> to the ld flags.
> 
> That shouldn't be necessary. Linking without this should work just fine.

Unfortunately, this was not my experience.

> That way, since you made libpython2.5.a a static library, you link an
> entire Python interpreter into each and every extension module. This
> should not be done.

Actually, a straight configure, make, install of the python2.5 source 
produced this library.

> What happens if you omit these flags?

Please see my last message to Robert Kern.

James


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sun Sep 24 08:29:54 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 24 Sep 2006 14:29:54 +0200
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de> <4nn8vuFb1oe9U1@individual.net>
	<mailman.527.1159100324.10491.python-list@python.org>
Message-ID: <4nnc22FaupktU1@individual.net>

Ben Finney wrote:

> I believe Ingo is checking for the case where the user intended to
> enter a valid email address, and made a typing error resulting in
> a trivially invalid one.

Ah. Good intention, but the same applies: Typos in the localpart are
not detectable. Typos in the domain part could mostly be easily
corrected by hand, too.

Regards,


Bj?rn

-- 
BOFH excuse #297:

Too many interrupts



From steve at holdenweb.com  Mon Sep 11 15:31:26 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 20:31:26 +0100
Subject: BaseHTTPServer weirdness
In-Reply-To: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
Message-ID: <ee4dh4$2sf$1@sea.gmane.org>

Ron Garret wrote:
> I'm trying to figure out how to use BaseHTTPServer.  Here's my little 
> test app:
> 
> =================================
> 
> #!/usr/bin/python
> 
> from BaseHTTPServer import *
> 
> import cgi
> 
> class myHandler(BaseHTTPRequestHandler):
> 
>   def do_GET(r):
>     s = ''
>     try:
>       s = cgi.parse_qs(r.rfile.read(int(r.headers.get 
> ("Content-length"))), 1)
>     except:
>       pass
> 
>     r.send_response(200)
>     r.send_header("Content-type", "text/html")
>     r.end_headers()
>     r.wfile.write("""
>     <form method=post action=foo>
>     <input type=text name=text1 value="">
>     <input type=text name=text2 value="">
>     <input type=submit>
>     </form> %s
>     """ % s)
> 
>   def do_POST(r):
>     r.do_GET()
> 
> 
> d = HTTPServer(('', 1024), myHandler)
> d.serve_forever()
> 
> ===================================
> 
> Two questions:
> 
> 1.  The line:
> 
> s = cgi.parse_qs(r.rfile.read(int(r.headers.get("Content-length"))), 1)
> 
> feels like a horrible hack.  It seems like this would be a better 
> alternative:
> 
> s = cgi.parse(r.rfile)
> 
> but that doesn't actually work.  Why?  What is the Right Way to parse 
> form data in a BaseHTTPServer?
> 
The normal way is

s = cgi.parse()

since the CGI script sees the client network socket (after consumption 
of HTTP headers) as its standard input. However I'm not sure how much it 
currently does in the way on handling strange inputs like gzip 
compressed data.

> 2.  Despite the fact that I'm passing a 1 for the keep_blank_values 
> argument to cgi.parse_qs, it doesn't actually keep blank values.  Is 
> this a bug, or am I doing something wrong?
> 
Sounds like a bug, but then since your parsing looks buggy I'm surprised 
you get anything at all. Try using a keyword argument 
keep_blank_values=1 just in case the order has changed or something 
daft. But fix your parsing first.

The other thing to note is that since you are putting a dictionary's 
string representation out straight into your HTML if there are odd 
characters in it this may give you strange output in the browser, so you 
should view the page source to ensure that's not the case. Which it 
probably isn't ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Tue Sep 26 10:44:14 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 16:44:14 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><Xns984996E6BABCEduncanbooth@127.0.0.1><slrnehfogu.6tm.jon+usenet@snowy.squish.net><Xns98499CF9DCEE4duncanbooth@127.0.0.1><slrnehfr5g.6tm.jon+usenet@snowy.squish.net><mailman.672.1159275735.10491.python-list@python.org><slrnehia6n.9o0.jon+usenet@snowy.squish.net><mailman.680.1159277904.10491.python-list@python.org><slrnehibsm.9o0.jon+usenet@snowy.squish.net><mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
Message-ID: <efbebu$v87$1@sea.gmane.org>

Jon Ribbens wrote:

> If you don't know the answer, you can say so y'know.

I know the answer.  I'm pretty sure everyone else who's actually read my posts
to this thread might have figured it out by now, too.  But since you're still trying
to "win" the debate, long after it's over, I think it's safest to end this thread right
now.  *plonk* 





From robert.kern at gmail.com  Tue Sep 26 19:36:50 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 26 Sep 2006 18:36:50 -0500
Subject: f2py on windows tutorials
In-Reply-To: <efcddb$itm$1@sea.gmane.org>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>	<mailman.504.1159044688.10491.python-list@python.org>	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>	<mailman.730.1159299369.10491.python-list@python.org>	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>
	<efcddb$itm$1@sea.gmane.org>
Message-ID: <efcdid$itm$2@sea.gmane.org>

Robert Kern wrote:
> Flavio wrote:
>> Thank you Robert,
>>
>> I was surprised that the setup.py was virtually identical to the one I
>> use for Linux. However I was not at all surprised when it didn't work.
>> ;-)
>>
>> It complains it can't find msvc:
>>
>> No module named msvccompiler in numpy.distutils, trying from
>> distutils..
>> error: the .NET Framework SDK needs to be installed before building
>> extensions for Python.
>>
>> any further help will be greatly appreciated...
> 
>  From my previous post:
> Did you pass "--compiler=mingw --fcompiler=gnu" to your build command?

More specifically:

   python setup.py build_ext --compiler=mingw --fcompiler=gnu

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From ptmcg at austin.rr._bogus_.com  Wed Sep 27 09:15:52 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Wed, 27 Sep 2006 13:15:52 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <cQuSg.382$5o5.61@tornado.texas.rr.com>

"Antoon Pardon" <apardon at forel.vub.ac.be> wrote in message 
news:slrnehkqqc.rcu.apardon at rcpc42.vub.ac.be...
> On 2006-09-27, Peter Otten <__peter__ at web.de> wrote:
>> Antoon Pardon wrote:
>>
>>> I had written my own module, which works similarly but
>>> is somewhat extended. Here is an example of how it can
>>> be used and how I would like to use it but get stuck.
>>>
>>> from extreme import Top
>>>>>> Top
>>> Top
>>>>>> Top + 1
>>> Top
>>>>>> Top - 30
>>> Top
>>>>>> Top > 1e99
>>> True
>>>>>> lst = range(10)
>>>>>> lst[:Top]
>>> Traceback (most recent call last):
>>>   File "<stdin>", line 1, in ?
>>> TypeError: slice indices must be integers or None
>>>
<snip>

What about this?

-- Paul


class TopClass(int):
    def __add__(self,other):
        return self
    def __sub__(self,other):
        return self
    def __mul__(self,other):
        return self
    def __div__(self,other):
        return self
    def __iadd__(self,other):
        return self
    def __isub__(self,other):
        return self
    def __imul__(self,other):
        return self
    def __idiv__(self,other):
        return self
    def __str__(self):
        return "Top"

import sys
Top = TopClass(sys.maxint)

print Top
print int(Top)
print int(Top-1e9)

a = range(10)
print a[:Top]
print a[Top:]
print a[3:Top]


Prints:
Top
2147483647
2147483647
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
[]
[3, 4, 5, 6, 7, 8, 9] 




From steve at holdenweb.com  Tue Sep 26 23:12:52 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 04:12:52 +0100
Subject: A critique of cgi.escape
In-Reply-To: <efch5p$2cc$1@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>	<efa7cg$pr2$1@lust.ihug.co.nz>	<efaknl$867$2@news.albasani.net>	<efakui$idf$4@lust.ihug.co.nz>	<efate6$ilf$1@news.albasani.net>
	<efb1q3$a43$2@lust.ihug.co.nz>	<mailman.673.1159276007.10491.python-list@python.org>
	<efch5p$2cc$1@lust.ihug.co.nz>
Message-ID: <efcq62$fmc$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.673.1159276007.10491.python-list at python.org>, Steve
> Holden wrote:
> 
> 
>>Lawrence D'Oliveiro wrote:
>>
>>>In message <efate6$ilf$1 at news.albasani.net>, Georg Brandl wrote:
>>>
>>>
>>>
>>>>Lawrence D'Oliveiro wrote:
>>>>
>>>>
>>>>>In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:
>>>>>
>>>>>
>>>>>
>>>>>>Lawrence D'Oliveiro wrote:
>>>>>>
>>>>>>
>>>>>>>In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M
>>>>>>>wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>Lawrence is right that the escape method doesn't work the way he
>>>>>>>>expects it to.
>>>>>>>>
>>>>>>>>Rewriting a library module simply because a developer is surprised is
>>>>>>>>a *very* bad idea.
>>>>>>>
>>>>>>>I'm not surprised. Disappointed, yes. Verging on disgust at some
>>>>>>>comments in this thread, yes. But "surprised" is what a lot of users
>>>>>>>of the existing cgi.escape function are going to be when they discover
>>>>>>>their code isn't doing what they thought it was.
>>>>>>
>>>>>>Why should they be surprised? The documentation states clearly what
>>>>>>cgi.escape() does (as does the docstring).
>>>>>
>>>>>Documentation frequently states stupid things. Doesn't mean it should be
>>>>>treated as sacrosanct.
>>>>
>>>>That's not the point. The point is that someone using cgi.escape() will
>>>>hardly be surprised of what it does and doesn't do.
>>>
>>>
>>>And this surprise, or lack of it, is relevant to the argument how,
>>>exactly?
>>
>>Is there *any* branch of this thread that won't end with some snippy
>>remark from you?
> 
> 
> And this is relevant to the argument how, exactly?

I would really rather this were a discussion than an argument. You will 
now no doubt reply telling me I wouldn't.

My posting was issued as a response to the irritation engendered by your 
argumentative style of debate. Your latest response simply proves that 
there is indeed no remark, however irrelevant, that you will allow to go 
unanswered.

For heaven's sake, learn to shut up for at least some of the time!

regards
  Steve

PS: Do you have the maturity to resist the temptation to reply to this? 
I seriously doubt it.
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Tue Sep 26 09:11:24 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 09:11:24 -0400
Subject: QuoteSQL
In-Reply-To: <efb0bk$8e5$1@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<Xns98498D79318AFduncanbooth@127.0.0.1>	<efapj7$rfd$2@lust.ihug.co.nz>	<Xns984A6E99A1A73duncanbooth@127.0.0.1>
	<efb0bk$8e5$1@lust.ihug.co.nz>
Message-ID: <efb8s9$6n3$3@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <Xns984A6E99A1A73duncanbooth at 127.0.0.1>, Duncan Booth wrote:
> 
> 
>>However, your QuoteSQL messes up every time because it wraps double
>>quotes round the whole string, so it isn't suitable for use with
>>parameterised queries at all. If you care to modify it to work in that
>>situation I think you'll find that the only characters you need to quote
>>are \, % and _.
> 
> 
> That won't work--that puts you into stupid mistake number 2.
> 
> I think autoquoting is fine as far as it goes. But it cannot cope with
> wildcards, since it can't tell whether the string is being used in a LIKE
> clause without doing its own parsing of the MySQL query. And there are
> situations where you cannot rely on it, as in the QuoteSQLList example I
> gave earlier. This is why my QuoteSQL function cannot be designed to work
> together with autoquoting, but has to be used as a complete replacement for
> it.
> 
> 
>>In particular it currently turns newlines in backslash followed by n which
>>(since MySQL ignores the extra backslash escape) is equivalent to turning
>>newlines into the character n.
> 
> 
> But \n is valid MySQL syntax for a newline.

Phew. It's a good hob that MySQL is the only database in the known 
universe, then, isn't it.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From g.brandl-nospam at gmx.net  Fri Sep 29 10:36:47 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Fri, 29 Sep 2006 16:36:47 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <slrnehqb1f.130.horpner@FIAD06.norwich.edu>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
	<mailman.918.1159509387.10491.python-list@python.org>
	<slrnehqb1f.130.horpner@FIAD06.norwich.edu>
Message-ID: <efjb21$ri8$1@news.albasani.net>

Neil Cerutti wrote:
> On 2006-09-29, Steve Holden <steve at holdenweb.com> wrote:
>> MonkeeSage wrote:
>>> So far as unobfuscated versions go, how about the simple:
>>> 
>>> def to_bin(x):
>>>   out = []
>>>   while x > 0:
>>>     out.insert(0, str(x % 2))
>>>     x = x / 2
>>>   return ''.join(out)
>>> 
>>> Regards,
> 
> It was surprising that
> 
>>>> i = int("111010101", 2)
> 
> is a one-way operation.
> 
>>>> s = str(i, 2)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: str() takes at most 1 argument (2 given)

str() is not only for converting integers, but all other types too.
An explicit argument for this special case is not Pythonic IMO.

Georg


From jackdied at jackdied.com  Tue Sep 19 16:42:54 2006
From: jackdied at jackdied.com (Jack Diederich)
Date: Tue, 19 Sep 2006 16:42:54 -0400
Subject: new string method in 2.5 (partition)
In-Reply-To: <atXPg.9$1n3.69@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<atXPg.9$1n3.69@news.tufts.edu>
Message-ID: <20060919204254.GD5928@performancedrivers.com>

On Tue, Sep 19, 2006 at 07:23:50PM +0000, John Salerno wrote:
> Bruno Desthuilliers wrote:
> 
> > Err... is it me being dumb, or is it a perfect use case for str.split ?
> 
> Hmm, I suppose you could get nearly the same functionality as using 
> split(':', 1), but with partition you also get the separator returned as 
> well.
> 
> > There are IMVHO  much exciting new features in 2.5 (enhanced generators, 
> > try/except/finally, ternary operator, with: statement etc...)
> 
> I definitely agree, but I figure everyone knows about those already. 
> There are also the startswith() and endswith() string methods that are 
> new and seem neat as well.

Partition is much, much nicer than index() or find() for many
(but not all) applications.

diff for cgi.py parsing "var=X" 
-        i = p.find('=')
-        if i >= 0:
-            name = p[:i]
-            value = p[i+1:]
+        (name, sep_found, value) = p.partition('=')

Notice that preserving the seperator makes for a nice boolean
to test if the partition was successful.  Partition raises an
error if you pass an empty seperator.

parition also has the very desirable feature of returning the orignal
string when the seperator isn't found

ex/

script = 'foo.cgi?a=7'
script, sep, params = script.partition('?')

"script" will be "foo.cgi" even if there are no params.  With
find or index you have to slice the string by hand and with split
you would do something like.

  try:
    script, params = script.split('?')
  except ValueError: pass

or

  parts = script.split('?', 1)
  script = parts[0] 
  params = ''.join(parts[1:])


Grep your source for index, find, and split and try rewriting
the code with partition.  Not every instance will turn out cleaner
but many will.

Long-live-partition-ly,

-Jack


From steve at holdenweb.com  Sat Sep  9 19:40:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 10 Sep 2006 00:40:22 +0100
Subject: pyserial problem: script stops reading
In-Reply-To: <5a8943c0609091004l318c61d6m2d69fcedcd8380ff@mail.gmail.com>
References: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>	<5a8943c0609081825r203d08b5xa4a6225f2d56c337@mail.gmail.com>	<020101c6d3eb$da564520$03000080@hendrik>
	<5a8943c0609091004l318c61d6m2d69fcedcd8380ff@mail.gmail.com>
Message-ID: <edvjc5$49r$2@sea.gmane.org>

Frederic Wenzel wrote:
> On 9/9/06, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
> 
>>| I wrote a script on Linux that uses pyserial to read status messages
>>| from a serial line using readlines(). For now, it just displays what
>>| it gets on stdout:
>>| (...)
>>| ser = serial.Serial(port=1,
>>|                                  baudrate=1200,
>>|                                  rtscts=1,
>>
>>if this is enabling hardware flow control  try turning it off - at 1200 baud you
>>should not need it
> 
> 
> Okay I disabled this for once.
> 
> 
>>|
>>| If the script does not time out there, I am not sure what else it is
>>| doing. It seems to be in a wait state it does not get out of.
>>
>>Sounds more and more like flow control hassle - can you lay your hands on a
>>break out box or a datascope?
> 
> 
> Unfortunately not. I will run a few more tests without rtscts though.
> 
> I am actually not horribly worried about kicking the serial reading
> service every once in a while, but it would be better if it detected
> the "stall" state itself...
> 
You could maybe have another program monitoring it - I seem to remember 
the APSN database holding a UDP heartbeat program that might be readily 
adaptable. No time to Goog^w use a popular search engine to look for it 
just now, but you should have all the keywords ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Tue Sep 12 12:46:28 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 18:46:28 +0200
Subject: best way of testing a program exists before using it?
In-Reply-To: <CCAC78D42E32184F8E26DC163DB98306C1B440@vogbs009.gb.vo.local>
References: <CCAC78D42E32184F8E26DC163DB98306C1B440@vogbs009.gb.vo.local>
Message-ID: <ee6o94$ch8$1@sea.gmane.org>

Tim Golden wrote:

> OK, I've never sent in a patch before (blushes for shame
> as he thinks of all the years he's been using Python). Would
> you mind pointing me towards some doc or post which tells
> me where to look and what to do. Should I checkout svn and 
> patch against that? Or what?

there's no need to create patches for small documentation fixes: just 
add a suggested replacement text to the bug tracker:

     http://sourceforge.net/bugs/?group_id=5470

if you want to make a proper patch, you'll find the official patch and 
documentation guidelines here:

     http://www.python.org/patches/
     http://www.python.org/dev/doc/

</F>



From xiejw0217 at gmail.com  Thu Sep  7 05:09:58 2006
From: xiejw0217 at gmail.com (xiejw)
Date: 7 Sep 2006 02:09:58 -0700
Subject: Convert to big5 to unicode
In-Reply-To: <1157617674.982042.22970@i42g2000cwa.googlegroups.com>
References: <1157617674.982042.22970@i42g2000cwa.googlegroups.com>
Message-ID: <1157620198.235452.79810@h48g2000cwc.googlegroups.com>

Install the codecs. In Debain, you can do :
 apt-get install python-cjkcodecs

Then, it is easy to encode ( I use 'gb2312' ) :

 str = '??'
 u = unicode(str,'gb2312')

The convertion is done and you can get the string of UTF-8:
 str_utf8 = u.encode("utf-8")

You can get the original string:
 str_gb = u.encode("gb2312")


GM ???

> Dear all,
>
> Could you all give me some guide on how to convert my big5 string to
> unicode using python? I already knew that I might use cjkcodecs or
> python 2.4 but I still don't have idea on what exactly I should do.
> Please give me some sample code if you could. Thanks a lot
> 
> Regards,
> 
> Gary



From damian at nice.co.nz  Wed Sep 27 17:24:36 2006
From: damian at nice.co.nz (Damian)
Date: 27 Sep 2006 14:24:36 -0700
Subject: XSLT speed comparisons
Message-ID: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>

Hi, I'm from an ASP.NET background an am considering making the switch
to Python. I decided to develop my next project in tandem to test the
waters and everything is working well, loving the language, etc.

What I've got is:
two websites, one in ASP.NET v2 and one in Python 2.5 (using 4suite for
XML/XSLT)
both on the same box (Windows Server 2003)
both using the same XML, XSLT, CSS

The problem is, the Python version is (at a guess) about three times
slower than the ASP one. I'm very new to the language and it's likely
that I'm doing something wrong here:

from os import environ
from Ft.Lib.Uri import OsPathToUri
from Ft.Xml import InputSource
from Ft.Xml.Xslt import Processor

def buildPage():
    try:
        xsluri = OsPathToUri('xsl/plainpage.xsl')
        xmluri = OsPathToUri('website.xml')

        xsl = InputSource.DefaultFactory.fromUri(xsluri)
        xml = InputSource.DefaultFactory.fromUri(xmluri)

        proc = Processor.Processor()
        proc.appendStylesheet(xsl)

        params = {"url":environ['QUERY_STRING'].split("=")[1]}
        for i, v in enumerate(environ['QUERY_STRING'].split("/")[1:]):
            params["selected_section%s" % (i + 1)] = "/" + v

        return proc.run(xml, topLevelParams=params)
    except:
        return "Error blah blah"

print "Content-Type: text/html\n\n"
print buildPage()

You can compare the development sites here:
asp: http://consultum.pointy.co.nz/about/team
python: http://python.pointy.co.nz/about/team

Cheers!



From MonkeeSage at gmail.com  Sat Sep 23 12:39:58 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 09:39:58 -0700
Subject: Need compile python code
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
Message-ID: <1159029598.538538.39510@i42g2000cwa.googlegroups.com>

mistral wrote:
> Just to comple python ode - it creates html page, nothing more, nothing
> else.. Just generate one html page.

I *think* this is what you want:

python -O -m py_compile file.py
python file.pyo

See: http://docs.python.org/lib/module-pycompile.html

Regards,
Jordan



From oleksik at awa.mat.agh.edu.pl  Sat Sep  9 08:22:12 2006
From: oleksik at awa.mat.agh.edu.pl (Pawel Oleksik)
Date: Sat, 9 Sep 2006 12:22:12 +0000 (UTC)
Subject: Bug in the documentation (?)
Message-ID: <edublj$dl7$1@news.task.gda.pl>


Hi, Snake Tamers

According to http://www.python.org/doc/2.4.1/lib/typesseq-strings.html (and
next releases):

"""
The conversion types are:

	Conversion 	Meaning 				Notes
		[...]
		x 	Unsigned hexadecimal (lowercase). 	(2)
		X 	Unsigned hexadecimal (uppercase). 	(2)

"""


But actually:

Python 2.4.1 (#1, Apr 10 2005, 22:30:36) 
[GCC 3.3.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> '%x' % -123456
'-1e240'

so it is a _signed_ hexadecimal.
However, sometimes it would be convinient to get the unisgned conversion
(especially, since id(..) can return a negative value).
This way is rather clumsy:

>>> '%x' % (id('abcd')+0x100000000)
'b7b75380'

Do you see any better solution?

p.o.



From paddy3118 at netscape.net  Mon Sep 25 15:12:00 2006
From: paddy3118 at netscape.net (Paddy)
Date: 25 Sep 2006 12:12:00 -0700
Subject: R.S.I. solutions?
Message-ID: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>

All this keyboarding has finally caught up with me and I'm getting
aches in my fingers.
last weekend I did the round of the usual UK High Street shops - PC
World, Currys and Comet. I finally got a new Microsoft 4000 ergonomic
keyboard, but all the ergonomic Mice and trackballs were gone!.

I've finally tracked down a supplier with a large range of pointer
devices:
  http://www.keytools.co.uk/mice/default.asp
But I am unable to try them out before I buy.

I was wondering if any Pythonistas had been through this and found
something that worked for them?

- Paddy.



From skip at pobox.com  Fri Sep  8 09:32:06 2006
From: skip at pobox.com (skip at pobox.com)
Date: Fri, 8 Sep 2006 08:32:06 -0500
Subject: A static pychecker?
In-Reply-To: <OPdMg.1076$fK7.563@newsfe03.lga>
References: <OPdMg.1076$fK7.563@newsfe03.lga>
Message-ID: <17665.28886.719652.67982@montanaro.dyndns.org>


    Edward> I am wondering whether anyone knows of a static source-code
    Edward> analyzer for Python, kinda like a static pychecker.

Pychecker v2 was supposed to use source analysis instead of importing the
modules.

Skip


From elpX at adsihqX.com  Mon Sep  4 13:39:56 2006
From: elpX at adsihqX.com (Dr. Pastor)
Date: Mon, 04 Sep 2006 10:39:56 -0700
Subject: Test for number?
Message-ID: <1157390891_40515@sp6iad.superfeed.net>

In the following code I would like to ascertain
that x has/is a number. What the simplest TEST should be?
(Could not find good example yet.)
---
x=raw_input('\nType a number from 1 to 20')
if TEST :
		Do_A
else:
		Do_B
---
Thanks for any guidance.

----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From skip at pobox.com  Tue Sep 26 16:14:26 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 26 Sep 2006 15:14:26 -0500
Subject: Surprise using the 'is' operator
In-Reply-To: <78b3a9580609261239v6a7e289q126e90da401c2752@mail.gmail.com>
References: <78b3a9580609261239v6a7e289q126e90da401c2752@mail.gmail.com>
Message-ID: <17689.35362.506621.825714@montanaro.dyndns.org>


    Wesley> as a side note, the ints that are cached (for current versions
    Wesley> of Python) are in range(-1, 100)... is this documented
    Wesley> somewhere?

Other than the code, probably not.  Since it's an implementation
optimization, I see no particular reason that it should be documented
elsewhere.  Hmmm... It would be interesting if we had a buildbot which
through a series of slightly twisty C macros built an interpreter that
eliminates the free list altogether to make sure nothing depends on its
presence or size.

Skip


From johan.steyn at gmail.com  Fri Sep 29 17:17:34 2006
From: johan.steyn at gmail.com (Johan Steyn)
Date: Fri, 29 Sep 2006 22:17:34 +0100
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <1159554370.109208.301430@m7g2000cwm.googlegroups.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
	<1159515955.553244.74480@i3g2000cwc.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
Message-ID: <667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>

On 29 Sep 2006 11:26:10 -0700, Klaas <mike.klaas at gmail.com> wrote:

> else: does not trigger when there is no data on which to iterate, but
> when the loop terminated normally (ie., wasn't break-ed out).  It is
> meaningless without break.

  The else clause *is* executed when there is no data on which to iterate.
Your example even demonstrates that clearly:

 >>> for x in []:
> ...     print 'nothing'
> ... else:
> ...     print 'done'
> ...
> done


The else clause is executed because the loop still terminates normally with
an empty list - albeit without having looped at all.

I agree that it is meaningless without a break statement, but I still find
it useful when I want to determine whether I looped over the whole list or
not. For example, if I want to see whether or not a list contains an odd
number:

for i in list:
    if i % 2 == 1:
        print "Found an odd number."
        break
else:
    print "No odd number found."

Without the else clause I would need to use an extra variable as a "flag"
and check its value outside the loop:

found = False
for i in list:
    if i % 2 == 1:
        print "Found an odd number."
        found = True
        break
if not found:
    print "No odd number found."

OK, so using "else" only saves me 2 lines and a variable - not much to write
home about, but I still like it.

Johan.
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From sjmachin at lexicon.net  Sun Sep  3 04:44:11 2006
From: sjmachin at lexicon.net (John Machin)
Date: 3 Sep 2006 01:44:11 -0700
Subject: overriding character escapes during file input
In-Reply-To: <1157257938.526720.52780@74g2000cwt.googlegroups.com>
References: <mailman.10295.1157255409.27775.python-list@python.org>
	<1157257938.526720.52780@74g2000cwt.googlegroups.com>
Message-ID: <1157273051.152892.239150@b28g2000cwb.googlegroups.com>


John Machin wrote:
> David J Birnbaum wrote:
> > Dear Python-list,
> >
> > I need to read a Unicode (utf-8) file that contains text like:
> > > blah \fR40\fC blah
> > I get my input and then process it with something like:
> > > inputFile = codecs.open(sys.argv[1],'r', 'utf-8')
> > >
> > > for line in inputFile:
> > When Python encounters the "\f" substring in an input line, it wants to
> > treat it as an escape sequence representing a form-feed control
> > character,
>
> Even if it were as sentient as "wanting" to muck about with the input,
> it doesn't. Those escape sequences are interpreted by the compiler, and
> in other functions (e.g. re.compile) but *not* when reading a text
> file.
>
> Example:
> |>>> guff = r"blah \fR40\fC blah"
> |>>> print repr(guff)
> 'blah \\fR40\\fC blah'
> |>>> # above is ASCII so it is automatically also UTF8
>
> Comment: It contains backslash followed by 'f' ...
>
> |... fname = "guff.utf8"
> |>>> f = open(fname, "w")
> |>>> f.write(guff)
> |>>> f.close()
> |>>> import codecs
> |>>> f = codecs.open(fname,'r', 'utf-8')
> |>>> guff2 = f.read()
> |>>> print guff2 == guff
> |True
> No interpretation of the r"\f" has been done.
>
> > which means that it gets interpreted as (or, from my
> > perspective, translated to) "\x0c". Were I entering this string myself
> > within my program code, I could use a raw string (r"\f") to avoid this
> > translation, but I don't know how to do this when I am reading a line
> > from a file.
>
> What I suggest you do is:
>    print repr(open('yourfile', 'r').read()
> [or at least one of the offending lines]
> and inspect it closely. You may find (1) that the file has formfeeds in
> it or (2) it has r"\f" in in it and you were mistaken about the
> interpretation or (3) something else.
>
> If you maintain (3) is the case, then make up a small example file,
> show a dump of it using print repr(.....) as above, plus the (short)
> code where you decode it and dump the result.
=========================================================
On 3/09/2006 3:53 PM, David J Birnbaum wrote in e-mail:
> Dear John,
>
> Thank you for the quick response. Ultimately I need to remap the "f" in
> "\f" to something else, so I worked around the problem by doing the
> remapping first, and I'm now getting the desired result.
>

Please reply on-list.

How could you read the file to remap an "f" if you were getting '\0x0C'
when you tried to read it? Are we to assume that it was case (2) i.e.
not a Python problem?

Cheers,
John



From s0094060 at sms.ed.ac.uk  Wed Sep 27 13:22:27 2006
From: s0094060 at sms.ed.ac.uk (Sean Hammond)
Date: Wed, 27 Sep 2006 18:22:27 +0100
Subject: Why don't optional mutable objects show up in vars(func)?
In-Reply-To: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
References: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
Message-ID: <1159377747.5147.0.camel@localhost.localdomain>

On Wed, 2006-09-27 at 09:32 -0700, dannycolligan at gmail.com wrote:
> So I just got bitten by the "don't use a mutable object as an optional
> argument" gotcha.  I now realize that for this function:
> 
> >>> def func(x, y=[]):
> ...     y.append(x)
> ...     print y
> ...
> 
> y is initialized when the function is imported, not when the function
> is executed.

I thought it was initialised the first time the function gets called?



From melih.onvural at gmail.com  Tue Sep 26 19:23:28 2006
From: melih.onvural at gmail.com (Melih Onvural)
Date: 26 Sep 2006 16:23:28 -0700
Subject: problem moving from char to integer
In-Reply-To: <pan.2006.09.26.23.19.22.800843@users.sf.net>
References: <1159312523.880618.316150@m7g2000cwm.googlegroups.com>
	<pan.2006.09.26.23.19.22.800843@users.sf.net>
Message-ID: <1159313008.738945.127950@i42g2000cwa.googlegroups.com>

This is the error message that I'm having a tough time interpreting:
Traceback (most recent call last):
  File "pagerank.py", line 101, in ?
    main()
  File "pagerank.py", line 96, in main
    ch = strord(url)
  File "pagerank.py", line 81, in strord
    result[counter] = int(i);
ValueError: invalid literal for int(): i

and here is the full code:

def strord(url):
    counter=0;
    for i in url:
       result[counter] = int(i);
       counter += 1;

    return result;

Thanks

Pontus Ekberg wrote:
> Melih Onvural wrote:
>
> > Group,
> >
> > I'm trying to get a very basic cast from a string to an integer
> > working. Here is what I'm doing:
> >
> > for i in url:
> >      result[counter] = int(i)
> >      counter += 1;
> >
> > return result;
> >
> > anything that I'm doing drastically wrong? Mac OS 10.4, MacPython
> > upgraded to 2.4. Thanks for any help,
> >
> > Melih
>
> In what way does it not work? Please post the entire code or at least the
> result of your code.



From exarkun at divmod.com  Tue Sep  5 21:35:20 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 5 Sep 2006 21:35:20 -0400
Subject: threading support in python
In-Reply-To: <7xbqptdeeo.fsf@ruckus.brouhaha.com>
Message-ID: <20060906013520.1717.681855590.divmod.quotient.40424@ohm>

On 05 Sep 2006 17:31:11 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>
>  def func(filename):
>     with open(filename) as f:
>        do_something_with(f)
>     # f definitely gets closed when the "with" block exits
>
>which more explicitly shows the semantics actually desired.  Not that
>"huge" a benefit as far as I can tell.  Lisp programmers have gotten
>along fine without it for 40+ years...

Uh yea.  No lisp programmer has ever written a with-* function... ever.

Jean-Paul


From fredrik at pythonware.com  Tue Sep 26 02:31:26 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 08:31:26 +0200
Subject: Query regarding grep!!
In-Reply-To: <20060926061233.23085.qmail@web8709.mail.in.yahoo.com>
References: <20060926061233.23085.qmail@web8709.mail.in.yahoo.com>
Message-ID: <efahg2$mi5$1@sea.gmane.org>

bhavya sg wrote:

>  I saw in PEP4 of python 2.5 that grep module has gone
> obsolete in perl 2.5. But I am not able to find an
> alternative for that.

the grep module has been deprecated for ages (it's been in the lib-old 
non-standard library since at least Python 2.1).  The old grep module 
depends on the regex module, which has been deprecated since Python 1.6, 
and which was finally removed in Python 2.5.

 > My doubt is "are the other forms of grep like egrep and ggrep be used 
 > instead"?

there are no such modules in Python, afaik.

(and that's a question, not a doubt, right?)

if you have Python code that uses the grep module, you can replace it 
with something like:

     import re

     def simple_grep(filename, pattern):
         find = re.compile(pattern).search
         for index, line in open(filename):
             if find(line):
                 print filename, index, line[:-1]

where pattern is an RE-style pattern, not a REGEX-style pattern (see the 
RE documentation for details).

</F>



From steve at holdenweb.com  Thu Sep 14 07:20:23 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 14 Sep 2006 07:20:23 -0400
Subject: How can I get the function's caller?
In-Reply-To: <92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>	<mailman.4.1158129274.10491.python-list@python.org>
	<92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>
Message-ID: <eebdsc$qup$2@sea.gmane.org>

David wrote:
> Il Wed, 13 Sep 2006 07:34:45 +0100, Steve Holden ha scritto:
> 
> 
>>What do you need this name for, just as a materr of interest? There are 
>>ways of manipulating the stack frames, but they'll be slow and possibly 
>>unreliable.
> 
> I am writing a big (for me) program and it would be helpful to have a dummy
> function like this:
> 
> def function_A_subfunction_B(self, ....)
> 	dummy()
> 
> that display a standard message like this:
> 
> "Dummy: 'function_A_subfunction_B' in module 'module' is not defined yet"
> 
One way would be to have dummy() raise an exception, which it catches. 
Then use the traceback information to provide the information you want.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From randhol+valid_for_reply_from_news at pvv.org  Mon Sep 18 16:18:14 2006
From: randhol+valid_for_reply_from_news at pvv.org (Preben Randhol)
Date: Mon, 18 Sep 2006 22:18:14 +0200
Subject: How to find number of characters in a unicode string?
Message-ID: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>

Hi

If I use len() on a string containing unicode letters I get the number
of bytes the string uses. This means that len() can report size 6 when
the unicode string only contains 3 characters (that one would write by
hand or see on the screen). Is there a way to calculate in characters
and not in bytes to represent the characters.

The reason for asking is that PyGTK needs number of characters to set
the width of Entry widgets to a certain length, and it expects viewable
characters and not number of bytes to represent them.


Thanks in advance


Preben


From fredrik at pythonware.com  Fri Sep 22 18:42:25 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 23 Sep 2006 00:42:25 +0200
Subject: python-Levenshtein-0.10.1
In-Reply-To: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
References: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
Message-ID: <ef1osh$ur4$1@sea.gmane.org>

joshbloom at gmail.com wrote:

> I'd like to move my app over to linux machine and am wondering if
> someone could help me understand how to 'install' this extension on a
> linux machine?

unless the README in the distribution says otherwise, following the 
instructions in the standard "Installing Python Modules" manual should work:

     http://docs.python.org/inst/inst.html

</F>



From tenax.raccoon at gmail.com  Fri Sep  8 18:00:11 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 8 Sep 2006 15:00:11 -0700
Subject: super and __init__
References: <1157741577.676925.288290@h48g2000cwc.googlegroups.com>
Message-ID: <1157752811.316633.91030@b28g2000cwb.googlegroups.com>

Noah wrote:
> Am I the only one that finds the super function to be confusing?
>
> I have a base class that inherits from object.
> In other words new style class:
>
> class foo (object):
>     def __init__ (self, arg_A, arg_B):
>         self.a = arg_A
>         self.b = arg_B
>         #   Do I need to call __init__ on "object" base class?
>
> class bar (foo):
>     def __init__ (self, arg_Z):
>         self.z = "Z" + arg_Z
>         foo.__init__(self, 'A', arg_Z)    #  this is the old-style
> class way
>     def __str__ (self):
>         return self.a + self.b + self.z
>
> I don't know how people will use the "bar" class
> in terms of inheritance. I don't want to lock anyone
> out of multiple inheritance, but I'd like to  have to
> worry about it as little as possible. From what I've
> read using  the  old style of calling the
> base class __init__ can cause conflicts
> if the class is later part of a diamond relationship.
>
> I just want "bar" to initialize the properties that it add
> to the base class and to have it tell the base class to
> initialize the inherited properties. The old way seemed
> clear enough; although, a bit ugly. The super function
> seems like it would make this more clear, but
> it doesn't (to me).
>
> Is there a "just do this" answer for 90% of the use cases?
>
> Yours,
> Noah

As far as I can tell, the best way to use super() with an __init__
function is to stick to a rigid function signiture.  This means, all
__init__'s must either have the same functions, accept parameters in
the same order (and handle excess parameters through the *args
mechanism), or use keyword arguments (using the **keyargs mechanism).

So, use one of the following for all your classes in the hierarchy:
def __init__(self, arg1, arg2):  # No subclass can add or remove
arguments
  pass

def __init__(self, arg1, arg2, *args):
    # Subclasses can add arguments, but cannot remove or have a
different
    # argument order.  The instances must be created with all possible
parameters.
    pass

def __init__(self, arg1, arg2, **keyargs):
    # Subclasses can add or remove arguments, and order doesn't matter.
    # The instances must be created with all possible keyword
parameters.
    pass

Unfortunately, I don't see a way of avoiding this problem with super().
 Any such super command resolves in the mro order.  Since the mro order
invoked at a certain class can change depending on its subclasses,
there's no way for the class to predict at design time what super() is
going to return.  You can predict what will be returned with your class
hierarchy, but another programmer can create a multiple-inheritence
class that will change the result.

Explicitly calling the base class is much easier, but a given class
method can be called multiple times in that case.

I do wish there was a way to kinda combine the two methods: Explicitly
call the super-classes, but do so that each super-method can get called
one or no times.  Unfortunately, I haven't (yet) found a way to do so
that can resolve things right.

That's not to say that there isn't a better way.  I'm sure that the
Python developers had a devil of a time working on this thing.

    --Jason



From cfbolz at googlemail.com  Fri Sep 29 08:41:21 2006
From: cfbolz at googlemail.com (cfbolz at googlemail.com)
Date: 29 Sep 2006 05:41:21 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <451CD389.3010800@jessikat.plus.net>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
Message-ID: <1159533681.380235.101310@m73g2000cwd.googlegroups.com>

Robin Becker wrote:
> Larry Hastings wrote:
> ______
>> THE PATCH
>>
>> The core concept: adding two strings together no longer returns a pure
>> "string" object.  Instead, it returns a "string concatenation" object
>> which holds references to the two strings but does not actually
>> concatenate
>> them... yet.  The strings are concatenated only when someone requests
>> the
>> string's value, at which point it allocates all the space it needs and
>> renders the concatenated string all at once.
>>
>> More to the point, if you add multiple strings together (a + b + c),
>> it *doesn't* compute the intermediate strings (a + b).
>>
>> Upsides to this approach:
> ........
>
> wouldn't this approach apply to other additions eg list+list seq+seq etc
> etc.

no, I think it depends on strings being immutable. If you do list1 +
list2 that way and list1 is mutated then the resulting list would be
changed too (at least if you don't do additional things).

> I suppose the utility of such an approach depends on the frequency with
> which multiple strings/lists/sequences etc are added together in real code.

I think there are quite a lot of string additions around, it's just
that people get told to use join all the time, so they are not written
using "+".

Cheers,

Carl Friedrich Bolz



From cartercc at gmail.com  Wed Sep 27 08:15:26 2006
From: cartercc at gmail.com (cartercc at gmail.com)
Date: 27 Sep 2006 05:15:26 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <1159359326.496431.293370@i3g2000cwc.googlegroups.com>

I, too, attempt to track the popularity of computer languages, but I
like to look at the job boards. My theory is that the number of
employers looking for particular skills indicates the relative
popularity of the language. This is a somewhat crude measure,
particularly with Microsoft technologies (VB, VB6, VB.NET, VS, etc). I
think it's much more reliable with open source languages, such as Java,
Perl, PHP, and so on.

'Popularity' is a slippery concept as well. C isn't real popular in
terms of jobs, but it is in terms of compensation. In system
administration (which I also follow), Windows has large numbers of
jobs, but a low level of compensation. OSes like AIX on the other hand
have lower numbers of available jobs, but those tend to be more highly
compensated. One could argue that compensation is a function of
popularity, with the more unpoular technologies having carrying a
bigger price to attract more people -- an example of supply and demand
-- but then one would have to argue that garbade collectors should be
more highly compensated that physicians.

You can also get a rough measure ot the popularity of web scripting
languages from an analysis of the URLs. The last time I did this was in
2003, and as I recall, these were the results:
PHP 30% and increasing
Perl 28% and falling
ASP 25% and falling fast
ColdFusion 6% and steady
Java and JSP 5% and increasing
others, Python, Ruby, ...

Again, this is a very rough measure. Java, for instance, is used by big
companies (like auto manufacturers, aerospace industries, defense
contractors, big retailers, etc.) One site/one vote isn't
representative necessarily, plus the bigger companies employ more
people than the smaller companies that tend to use FOSS.

Finally, in my area, we have a lot of banking and insurance jobs. These
companies internally are exclusively Microsoft shops. It's virtually
impossible to work there unless you know Visual Studio and SQL Server.
Misrosoft people tend not to prowl the newsgroups, and I would suspect
that any measurement based on numbers of newsgroup postings would be
skewed for this reason.

CC



From andrew-news at andros.org.uk  Mon Sep 11 13:00:30 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Mon, 11 Sep 2006 18:00:30 +0100
Subject: Algorithm Question
In-Reply-To: <1157989656.266078.205560@d34g2000cwd.googlegroups.com>
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
Message-ID: <ee44nl$8r$1$830fa79d@news.demon.co.uk>

Carl Banks wrote:
> Andrew McLean wrote:
>> I have a list of strings, A. I want to find a set of strings B such that
>> for any "a in A" there exists "b in B" such that b is a sub-string of a.
> 
> B=A?
> 
>> But I also want to minimise T = sum_j t_j where
>> t_j = count of the number of elements in A which have b[j] as a sub-string
> 
> If there not elements in A that are substrings of any other element in
> A, and if B=A, then t_j would be 1 for all j.  Which means B=A would be
> optimal (since elements of B have to be substring of at least one
> element in A).  It looks like the B={set of all elements in A that are
> not a substring of any other element in A} is the generally optimal
> solution.
> 
> I suspect you mistyped or omitted something--problem is underspecified
> at best.

You are quite right. I was trying to generalise my real problem and 
missed out a constraint. I also want to keep length(B) small. 
Unfortunately, I'm a bit unsure about the relative importance of T and 
length(B), which makes the problem rather ill defined. I'll have to give 
this a bit more thought....



From MonkeeSage at gmail.com  Fri Sep 15 20:39:05 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 15 Sep 2006 17:39:05 -0700
Subject: Finding dynamic libraries
References: <mailman.131.1158333391.10491.python-list@python.org>
Message-ID: <1158367145.252363.21230@d34g2000cwd.googlegroups.com>

Bill Spotz wrote:
> Is there a way to tell an executing python script where to look for
> dynamically-loaded libraries?

If I understand, you want to tell an already running python process to
import some extensions from arbitrary locations? If that is correct,
you could use a file to hold the dynamic load paths (e.g.,
path-per-line), and then before you want to import the extensions do
something like:

load_file = file('paths')
for path in load_file.read().split("\n"):
  if not path in sys.path:
    sys.path.insert(0, path)
load_file.close()

Regards,
Jordan



From onurb at xiludom.gro  Fri Sep  8 10:30:35 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 08 Sep 2006 16:30:35 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <1157709228.066561.5810@h48g2000cwc.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
	<1157702727.358576.24280@m79g2000cwm.googlegroups.com>
	<45013a2d$0$27222$636a55ce@news.free.fr>
	<1157709228.066561.5810@h48g2000cwc.googlegroups.com>
Message-ID: <45017e8c$0$24467$626a54ce@news.free.fr>

Frank Millman wrote:
> Bruno Desthuilliers wrote:
>> Frank Millman wrote:
>>> bearophileHUGS at lycos.com wrote:
>>>> There aren't abstract classes in Python. They are all
>>>> concrete.
>> (snip)
>>> I use the term 'abstract class' in the abstract sense :-)
>>>
>>> Say I have three classes where 90% of the attributes and methods are
>>> common. It makes sense to create a base class with these attributes and
>>> methods, and turn each of the three classes into a subclass which
>>> inherits from the base class and overrides the bits that are unique to
>>> each one.
>>>
>>> This is what I call an abstract class. Maybe there is a more correct
>>> term.
>> Depends if instanciating this base class would make any sense.
>>
> 
> It would not make sense, no.
> 
> I have not gone to the trouble of raising NotImplementedError - the
> methods that the subclasses *must* override just have a 'pass'
> statement. I guess it would be more correct to raise the error, as it
> would give me a quicker indication of an error if I happened to omit
> one, but in practice I would find out pretty quickly anyway.

Mmm... My own experience is that methods that *must* be redefined are
better raising NotImplementedError. Makes things more obvious IMHO.

Now there are of course methods that are only provided as hooks - here
it's ok to have some no-op default behaviour.

My 2 cents
> Frank
> 


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From george.sakkis at gmail.com  Thu Sep  7 11:16:35 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 7 Sep 2006 08:16:35 -0700
Subject: change property after inheritance
References: <V_ALg.10274$YZ3.7565@trnddc03>
	<mailman.82.1157557490.5279.python-list@python.org>
	<NcLLg.27806$CL6.8934@trnddc06>
	<6YSdneDAk40_gp3YnZ2dnUVZ_qqdnZ2d@comcast.com>
Message-ID: <1157642195.266630.177420@m73g2000cwd.googlegroups.com>

Steven Bethard wrote:

> David Isaac wrote:
> > Le mercredi 06 septembre 2006 16:33,  Alan Isaac a ?crit :
> >>> Suppose a class has properties and I want to change the
> >>> setter in a derived class. If the base class is mine, I can do this:
> >>> http://www.kylev.com/2004/10/13/fun-with-python-properties/
> >>> Should I? (I.e., is that a good solution?)
> >
> > "Maric Michaud" <maric at aristote.info> wrote in message
> > news:mailman.82.1157557490.5279.python-list at python.org...
> >> Why not ? This ontroduce the notion of public getter a la C++/Java while
> > the
> >> property is overloadable by itself (as below), but it's correct design
> > IMHO.
> >
> > More support for lambda, it seems...
>
> Well, lambda's not going away[1], but there's no *need* for lambda here.
>   It could be written as::

Sure, it *could*; whether it *should* is a different issue. I can't
imagine a case for absolute *need* of lambda, but there are several
cases where it is probably the best way, such as the one of this
thread.

George



From python.list at tim.thechases.com  Fri Sep  1 14:14:31 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 01 Sep 2006 13:14:31 -0500
Subject: disgrating a list
In-Reply-To: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
Message-ID: <44F87887.8010306@tim.thechases.com>

jwaixs wrote:
> Hello,
> 
> How can I disgrate (probably not a good word for it) a list? For
> example:
> 
> a = [1,2]
> b = 3
> c = [a] + [b]     # which makes [[1,2],3]
> 
> Then how can I change c ([[1,2],3]) into [1,2,3]? I have a simple
> function for this:
> ========================
> def flatten(l):
>        r = []
>        s = [l]
>        while len(s) > 0:
>                i = s.pop()
>                if i.__class__ == list:
>                        for c in i:
>                                s.append(c)
>                else:
>                        r.append(i)
>        return r
> ========================
> But this function isn't really doing it in the "python-way". Doesn't
> have python an obscure function or buildin to do this?

I'm not sure what makes it against "the python-way"...I would 
likely just use a "for" loop structure rather than a while loop. 
  I would also skip copying the parameter and popping its 
elements off.  Lastly, I would use a slightly broader test than 
asking if the item is a list (to handle sub-classes, sets, 
dictionaries, etc):

 >>> def flatten(x):
...     q = []
...     for v in x:
...             if hasattr(v, '__iter__'):
...                     q.extend(flatten(v))
...             else:
...                     q.append(v)
...     return q
...
 >>> flatten([1,2,3])
[1, 2, 3]
 >>> flatten([1,2,3, [5,6]])
[1, 2, 3, 5, 6]
 >>> flatten([1,2,3, [5,6, [7,8]]])
[1, 2, 3, 5, 6, 7, 8]
 >>> flatten([1,2,3, [5, {1:3,5:1},6, set([7,8])]])
[1, 2, 3, 5, 1, 5, 6, 8, 7]

I'm not sure if '__iter__' is the right thing to be looking for, 
but it seems to work at least for lists, sets, dictionarys (via 
their keys), etc.  I would use it because at least then you know 
you can iterate over it

I don't know of any builtin that will go to arbitrary depths, and 
haven't figured out a clean way to do this with any sort of 
list-comprehension, reduce/map call, or anything of the like. 
The ability to flatten requires recursing down nested data 
structures...recursion is something that list comprehensions, 
map()/reduce() commands, etc. aren't so good as (at least as far 
as I've learned).

-tkc









From g.brandl-nospam at gmx.net  Mon Sep 25 14:02:58 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 20:02:58 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
	<slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
Message-ID: <ef95kk$oan$1@news.albasani.net>

Jon Ribbens wrote:
> In article <4517eecf$0$14036$edfadb0f at dread15.news.tele.dk>, Max M wrote:
>> Oh ... because you cannot see a use case for that *documented* 
>> behaviour, it must certainly be wrong?
> 
> No, but if nobody else can find one either, that's a clue that maybe
> it's safe to change.
> 
> Here's a point for you - the documentation for cgi.escape says that
> the characters "&", "<" and ">" are converted, but not what they are
> converted to.

It says "to HTML-safe sequences". That's reasonably clear without the need
to reproduce the exact replacements for each character.

If anyone doesn't know what is meant by this, he shouldn't really write apps
using the cgi module before doing a basic HTML course.

Or use the source.

Georg


From expert-services at tethyssolutions.com  Thu Sep  7 16:26:03 2006
From: expert-services at tethyssolutions.com (expert-services at tethyssolutions.com)
Date: 7 Sep 2006 13:26:03 -0700
Subject: Automate Web Configuration
In-Reply-To: <1157651299.957385.96190@b28g2000cwb.googlegroups.com>
References: <1157651299.957385.96190@b28g2000cwb.googlegroups.com>
Message-ID: <1157660762.997466.124680@p79g2000cwp.googlegroups.com>

It is not FREE and not python, but you can try automation software like
Automation Anywhere
http://www.tethyssolutions.com/automation-software.htm to automate this
task and more. Just record your actions in web browser and it will
replay it back accurately.

You can also try Workspace Macro Pro,
http://www.tethyssolutions.com/macro-automation.htm if you don't need
advanced capabilities of Automation Anywhere.

Tethys Solutions, Expert Services Group
http://www.tethyssolutions.com/ask-the-expert.htm
SMART Macro & Automation Software

D wrote:
> I would like to write a program that will automate the configuation of
> a firewall or router via HTTPS.  So, I need to import the applicable
> certificate, and be able to configure the unit as if I was
> typing/selecting the appropriate fields manually using a web browser.
> If there is a command-line based tool that would allow me to do this, I
> would be more than willing to give it a try.  Otherwise, is there a
> Python library that would do the same?  Thanks.



From fredrik at pythonware.com  Wed Sep 20 07:34:27 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 20 Sep 2006 13:34:27 +0200
Subject: pprint: "...thank small children who sleep at night."
In-Reply-To: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
References: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
Message-ID: <eer903$v44$2@sea.gmane.org>

Brian L. Troutwine wrote:

> Is the last sentence an obscure reference or in-joke? Can someone
> explain it? I don't get it.

do you have small kids?  tried doing serious programming while they're 
still awake?

</F>



From python.list at tim.thechases.com  Fri Sep 22 14:30:23 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 22 Sep 2006 13:30:23 -0500
Subject: Replacing line  in a text  file
In-Reply-To: <slrneh889u.1c8.horpner@FIAD06.norwich.edu>
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
	<slrneh889u.1c8.horpner@FIAD06.norwich.edu>
Message-ID: <45142BBF.4050003@tim.thechases.com>

> That is, until such time as Guido finalizes PyESP.
> 
> import PyESP
> e = ESP.mindread(CSUIDL, "r")

Sounds like an extension to the __future__ module.

 >>> from __future__ import answers
 >>> answers.answer(op.question)

How many other languages have a time-machine built-in, that will 
take the programmer into the future?

No apache mod_precognition.
Perl offers no "use Eventual::Solution".
C/C++ offers no "#include <someday/answer.h>".
Same goes for Java's lack of "import java.ball.crystal"

Yet another reason to be a python programmer. :)

-tkc






From larry.bates at websafe.com  Thu Sep 21 09:36:53 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 21 Sep 2006 08:36:53 -0500
Subject: Is it possible to save a running program and reload next time
 ?
In-Reply-To: <mailman.386.1158824225.10491.python-list@python.org>
References: <mailman.386.1158824225.10491.python-list@python.org>
Message-ID: <45129575.2010908@websafe.com>

fdu.xiaojf at gmail.com wrote:
> Hi,
> 
> I have a program which will continue to run for several days. When it is
> running, I can't do anything except waiting because it takes over most
> of the CUP time.
> 
> Is it possible that the program can save all running data to a file when
> I want it to stop, and can reload the data and continue to run from
> where it stops when the computer is free ?
> 
> Regards,
> 
> xiaojf
> 
You can save the state of Python objects and reload them at a later time/date by
using Zope's ZODB.

http://www.zope.org/Wikis/ZODB/FrontPage

-Larry Bates



From robert.kern at gmail.com  Wed Sep 20 00:53:58 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 19 Sep 2006 23:53:58 -0500
Subject: Pythonic way to condese my array
In-Reply-To: <Zv3Qg.699$ef2.677@fed1read09>
References: <Zv3Qg.699$ef2.677@fed1read09>
Message-ID: <eeqhh3$qd0$1@sea.gmane.org>

Dean Card wrote:
> I have a list of dictionaries where each dictionary defines, among other 
> things, a row and column number.  So, my list might look like this:
> [{'row':1, 'column':1, otherdata}, {'row':1, 'column':2, 'otherdata}...]
> 
> This data is passed to flash and used there to create a grid of objects that 
> are placed based on the row and column values.
> 
> For a given set of data I may have values column values in the range of 1, 9 
> inclusive.
> 
> What I would like to do is take my list of dictionaries (like the one listed 
> above) and shift the column numbers down to fill in missing values... 
> example (only the column key,value pair is show for simplification):
> 
> [{'column':1}, {'column':2}, {'column', 4}, {'column': 8}, {'column':2}, 
> {'column', 4}]
> 
> If this were the dataset... I would want to change all 4s to 3 and all 8s to 
> 4.  That way I end up with 1 ...  4 instead of 1, 2, 4, and 8.
> 
> Is there some slick way to do this?

Untested, but intended for Python 2.4:

list_o_dicts = [{'column': 1}, ...]
columns = set(x['column'] for x in list_o_dicts)
column_map = dict((column, i+1) for i, column in enumerate(sorted(columns)))
for d in list_o_dicts:
     d['column'] = column_map[d['column']]

Of course, code that I wouldn't get fired for would have a slightly greater line 
count and fewer one-letter variable names.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From fredrik at pythonware.com  Wed Sep 13 11:59:23 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 17:59:23 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <ee98cn$qhp$1@foggy.unx.sas.com>
References: <edp56g$66u$1@foggy.unx.sas.com>	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
	<ee98cn$qhp$1@foggy.unx.sas.com>
Message-ID: <ee99ss$a1q$1@sea.gmane.org>

Kevin D.Smith wrote:

> This almost worked (at least, it appears to).  I got the module to 
> build and install using VS 2005.  It works fine if I run python from 
> the directory where I built the extension.  However, if you go to any 
> other directory, run python, and try to import the module, I get the 
> following error:
> 
> ImportError: dynamic module does not define init function (initsasSQL)
> 
> Why would it work from one directory, but not another?

do you perhaps have a different "sassql.dll" file in your Python path?

(Python's standard import mechanism looks for PYD, DLL, PY, PYW, and 
PYC, in that order.)

</F>



From anthra.norell at vtxmail.ch  Wed Sep 20 13:43:02 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Wed, 20 Sep 2006 19:43:02 +0200
Subject: newbe's re question
In-Reply-To: <1158761636.305283.184800@h48g2000cwc.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>	<mailman.322.1158749465.10491.python-list@python.org>
	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>
Message-ID: <45117DA6.8060709@vtxmail.ch>

Eric_Dexter at msn.com wrote:
> Frederic Rentsch wrote:
>   
>> Eric_Dexter at msn.com wrote:
>>     
>>> All I am after realy is to change this
>>>
>>>  reline = re.line.split('instr', '/d$')
>>>
>>> into something that grabs any line with instr in it take all the
>>> numbers and then grab any comment that may or may not be at the end of
>>> the line starting with ; until the end of the line including white
>>> spaces..  this is a corrected version from
>>>
>>> http://python-forum.org/py/viewtopic.php?t=1703
>>>
>>> thanks in advance the hole routine is down below..
>>>
>>>
>>>
>>>
>>>
>>>
>>> [code]
>>> def extractCsdInstrument (input_File_Name, output_File_Name,
>>> instr_number):
>>>
>>>     "takes an .csd input file and grabs instr_number instrument and
>>> creates output_File_Name"
>>>     f = open (input_File_Name , 'r')                #opens file passed
>>> in to read
>>>     f2 = open (output_File_Name, 'w')               #opens file passed
>>> in to write
>>>     instr_yes = 'false'                             #set flag to false
>>>
>>>     for line in f:                                  #for through all
>>> the lines
>>>       if "instr" in line:                           #look for instr in
>>> the file
>>>            if instr_yes == 'true':                    #check to see if
>>> this ends the instr block
>>>                break                                #exit the block
>>>
>>>            reline = re.line.split('instr', '/d$')     #error probily
>>> split instr and /d (decimal number into parts) $ for end of line
>>>            number = int(reline[1])                  #convert to a
>>> number maybe not important
>>>                 if number == instr_number:            #check to see if
>>> it is the instr passed to function
>>>                 instr_yes = "true":                 #change flag to
>>> true because this is the instr we want
>>>       if instr_yes = "true":                        #start of code to
>>> copy to another file
>>>            f2.write(f.line)                         #write line to
>>> output file
>>>
>>>     f.close                                         #close input file
>>>     f2.close
>>>
>>> [/code]
>>>
>>>
>>>       
>> Eric,
>>       From your problem description and your code it is unclear what
>> exactly it is you want. The task appears to be rather simple, though,
>> and if you don't get much useful help I'd say it is because you don't
>> explain it very well.
>>       I believe we've been through this before and your input data is
>> like this
>>
>>    data = '''
>>    <CsoundSynthesizer>;
>>      ; test.csd - a Csound structured data file
>>
>>    <CsOptions>
>>      -W -d -o tone.wav
>>    </CsOptions>
>>
>>    <CsVersion>    ;optional section
>>      Before 4.10  ;these two statements check for
>>      After 4.08   ;   Csound version 4.09
>>    </CsVersion>
>>
>>    <CsInstruments>
>>      ; originally tone.orc
>>      sr = 44100
>>      kr = 4410
>>      ksmps = 10
>>      nchnls = 1
>>      instr   1
>>          a1 oscil p4, p5, 1 ; simple oscillator
>>             out a1
>>        endin
>>    </CsInstruments>
>>
>>    <CsScore>
>>      ; originally tone.sco
>>      f1 0 8192 10 1
>>      i1 0 1 20000 1000 ;play one second of one kHz tone
>>      e
>>    </CsScore>
>>
>>    </CsoundSynthesizer>
>>
>> Question 1: Is this your input?
>> if yes:
>>     Question 1.1: What do you want to extract from it? In what format?
>> if no:
>>     Question 1.1: What is your input?
>>     Question 1.2: What do you want to extract from it? In what format?
>> Question 2: Do you need to generate output file names from the data?
>> (One file per instrument?)
>> if yes:
>>    Question 2.1: What do you want to make your file name from?
>> (Instrument number?)
>>
>>
>> Regards
>>
>> Frederic
>>     
>
> I want to pass the file name to the subroutine and return a comment
> string if it is there maybe it should be simplier.  I probily should
> have the option of grabbing the comment in other related routines.  I
> am pretty ambitious with the main program.  I did notice some code in
> tcl that would be usefull to the app If I compile it..  I am probily
> not ready for that though..
>
> http://www.dexrow.com
>
>   

Eric,
     I'm beginning to enjoy this. I'm sure we'll sort this out in no 
time if we proceed methodically. Imagine you are a teacher and I am your 
student. This is a quiz. I have to take it and you need to explain to me 
the problem you want me to solve. If you don't explain it clearly, I 
will not know what I have to do and cannot do the quiz. If you answer my 
questions above, your description of the problem will be clear and I can 
take the quiz. Okay?

Frederic






From steve at holdenweb.com  Tue Sep 19 20:59:53 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 20:59:53 -0400
Subject: pprint: "...thank small children who sleep at night."
In-Reply-To: <qT_Pg.26$4B3.24@tornado.texas.rr.com>
References: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>	<mailman.297.1158706362.10491.python-list@python.org>
	<qT_Pg.26$4B3.24@tornado.texas.rr.com>
Message-ID: <45109289.9070501@holdenweb.com>

Paul McGuire wrote:
> "Brian van den Broek" <broek at cc.umanitoba.ca> wrote in message 
> news:mailman.297.1158706362.10491.python-list at python.org...
> 
>>Brian L. Troutwine said unto the world upon 19/09/06 05:30 PM:
>>
>>>The heading comment to pprint reads:
>>>
>>>#  This is a simple little module I wrote to make life easier.  I
>>>didn't
>>>#  see anything quite like it in the library, though I may have
>>>overlooked
>>>#  something.  I wrote this when I was trying to read some heavily
>>>nested
>>>#  tuples with fairly non-descriptive content.  This is modeled very
>>>much
>>>#  after Lisp/Scheme - style pretty-printing of lists.  If you find it
>>>#  useful, thank small children who sleep at night.
>>>
>>>Is the last sentence an obscure reference or in-joke? Can someone
>>>explain it? I don't get it.
>>>
>>
>>Maybe it is an in-joke or reference that's blowing past me. But, I would 
>>assume that the author has kids whose sound sleep at night left him or her 
>>the time to code the module.
>>
>>Best,
>>
>>Brian vdB
> 
> 
> Why don't you write the author and ask?  His name and e-mail are right in 
> the header, just before the lines that you cited.
> 
Knowing Fred, he was probably too busy earning a living to write the 
code during the day and too conscientious to leave his kids alone to 
write it during the evening.

Good job, Fred (Fred is *way* under-appreciated).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From danielmarkhot at gmail.com  Sat Sep 16 11:21:46 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 16 Sep 2006 08:21:46 -0700
Subject: How to draw a rectangle with gradient?
Message-ID: <1158420106.678241.255820@d34g2000cwd.googlegroups.com>

Hello all:

I am using PIL to draw a rectangle filled with color blue.

Is there anyway I could set the fill pattern so that the drawn
rectangle could be filled with
gradient blue?


Thank you
-Daniel



From luis_lupe2 at netvisao.pt  Fri Sep 15 15:02:45 2006
From: luis_lupe2 at netvisao.pt (Luis P. Mendes)
Date: Fri, 15 Sep 2006 20:02:45 +0100
Subject: ancestor class' __init__ doesn't call other methods
Message-ID: <450af8d6$0$75041$14726298@news.sunsite.dk>

Hi,

I have the following problem:

I instantiate class Sistema from another class.  The result is the same
if I import it to interactive shell.

s = Sistema("par")

class Sistema:
    def __init__(self, par):
        cruza_ema = CruzaEmas(par)

class CruzaEmas(Ema, Cotacoes):
    def __init__(self, par):
        Cotacoes.__init__(self, par)  <- calls ancestor class' __init__

class Cotacoes:
    def __init__(self, par):
        print "par: ", par
        self.a()
    def a(self):			<- just as an example
        print "ffffffffffffff"

Method a() is not called.  Why is this?  What is the best option to
solve this? Have Cotacoes returning values and not to be an ancestor
class of CruzaEmas?


From outstretchedarm at hotmail.com  Wed Sep  6 13:51:12 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 6 Sep 2006 10:51:12 -0700
Subject: Script Bug?
Message-ID: <1157565072.272846.18240@m79g2000cwm.googlegroups.com>

okay,I'm going through this python tutorial, and according to the
tutorial, I can type this:

[code]
myList = [1,2,3,4]
for index in range(len(myList)):
    myList[index] += 1
print myList
[/code]

however, in my IDLE python shell, when I type

[code]
>>> myList = [1,2,3,4]
>>> for index in range(len(myList)):[/code]

it just gives me a prompt
[code]
>>> [/code]

?

why doesn't it just bring me to line three?  I need to have
persistence, cause little snags like these discourage me.  I know I
need thicker skin to write code.

any advice is appreciated



From johnjsal at NOSPAMgmail.com  Tue Sep 19 10:20:36 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 14:20:36 GMT
Subject: Installing 2.5 with 2.4?
Message-ID: <U0TPg.1$1n3.143@news.tufts.edu>

Hi all. Just curious, before I do it myself, about the best way to 
install 2.5 if it's the only version I want to use. Should I uninstall 
2.4 first? Does 2.5 replace 2.4? I doubt the latter, but if I install 
2.5, does that mean I need to reinstall all the extensions I had for 2.4 
again, or does 2.5 detect them somehow?

Thanks,
John


From johnjsal at NOSPAMgmail.com  Mon Sep 25 15:08:21 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 25 Sep 2006 19:08:21 GMT
Subject: 2.5 updates for syntax file
Message-ID: <FOVRg.23$1n3.227@news.tufts.edu>

Hi everyone. I'm updating my UltraEdit syntax file for Python 2.5 and 
was wondering if anyone knew of other additions to make besides these. I 
found all of these in the What's New document, but wasn't sure if there 
were other important things to add for highlight.

"Reserved Words"
with

"__Methods__"
__index__

"Common Libs"
ctypes
etree
hashlib
sqlite3
wsgiref
contextlib

Thanks!
John


From wildemar at freakmail.de  Mon Sep 25 17:27:30 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Mon, 25 Sep 2006 23:27:30 +0200
Subject: Advice for a novice on making ambitious cross-platform GUI app
In-Reply-To: <1159200780.240509.270660@i42g2000cwa.googlegroups.com>
References: <1159200780.240509.270660@i42g2000cwa.googlegroups.com>
Message-ID: <451849C2.7050707@freakmail.de>

Chelonian wrote:
> Project:  ambitious GUI program for Win/Mac/Linux.  Target user:
> average person.  App to look elegant, and be intuitive, responsive,
> exectuable, have its own icon, etc.  Needs to store user info in large
> database for the long term, run in the background and pop up at
> assigned times.  There are needs for graphing, data analysis, file
> management, word processing, text processing, web synchronization, etc.
>  It would have to look like commercial software, though it may turn out
> to be free open source.  It's envisioned as a pretty tall order, thus
> my wonder if I'm delusional in thinking I have any hope to accomplish
> this.
> 
This sounds very very interesting. A bit like the app *I* am 
envisioning/writing right now. :)

Can you elaborate a bit more on what kind of App this is supposed to be? 
I'm thinking that maybe if we share common goals, we might join forces.


> Can Python *alone* produce something like what I've described?  Or
> would I have to have some parts written in C?  Or is Python really not
> best-suited to these needs?
> 
Python is great. For everything. (except speed ;))
Look at chandler: Pure python, huge App. Slow though ;)
WikidPad is another example (not as huge). UliPad as well.
There must be more, I just don't know any off hand.


> Is using SPE with wxGlade a good choice?  What about Boa Constructor?
> 
Lots of people use each of those. But if you really want a slick 
(not-so-standard) UI, ditch the UI designer and code it yourself.

I have looked at SPE. Its fine.

Just. Try. ALL.
Then, and only then, shall you know. We can't tell you.

> Is it something one person could do over the course of a year or so,
> working say 10 hours a week on it?  Or is this really out of reach of
> anyone other than a hardcore programmer or even a team of them?
> 
I don't know. I'm on my app for a 3/4 year now and all I have is a 
shabby UI and a basic, if clunky, database engine. Although I must say, 
I had hard drive crash and switched from wxPython to pyGTK to wxPython.

I think it's always a bad idea to estimate how long it will take to do 
some computer related task (Note the generality of that statement.). 
Because the answer is in ALL cases: longer.


> If I write it using Python 2.5 and wxPython, do I have to use py2app or
> something to create an executable and necessary library files so it
> will run on Mac?  (Because of wxPython's libraries, which the Mac
> won't have?).  
> 
No clue, sorry.

bye
wildemar


From jujucece at gmail.com  Mon Sep 25 14:20:38 2006
From: jujucece at gmail.com (Juju)
Date: Mon, 25 Sep 2006 20:20:38 +0200
Subject: SimpleXMLRPCServer and socket
Message-ID: <9d52368b0609251120h3ff1fc26y4a4325e0f05b4d25@mail.gmail.com>

Hi,

First, sorry for my poor English !

I used the SimpleXMLRPCServer facility of Python to develop a
multithread-server, here's  part of my code :
--
class TotoSimpleXMLRPCServer(SocketServer.ThreadingMixIn,
SimpleXMLRPCServer.SimpleXMLRPCServer):

  def __init__(self, addr):
    SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(self, addr,
SimpleXMLRPCServer.SimpleXMLRPCRequestHandler, 0)

  def _dispatch(self, method, params):
    if method == "toto58":
      ...
--

The problem I have, is I don't know how to get the port used by the
remote host ?

I tried to get this information with the socket object of the Server,
but this socket always correspond to the LISTENING socket and not the
ESTABLISHED one ! (With the lsof command, I see 2 connexions 1 LISTEN
and 1 ESTABLISHED).

So, when I tried to getpeername() on this object, I've an Exception
(107, 'Transport endpoint is not connected'), which is normal for a
listening connexion.

How can I get the socket object corresponding to the ESTABLISHED
connexion ? (Or how can I do to get the port of the remote host ?)

Thanks in advance...
Juju


From onurb at xiludom.gro  Wed Sep  6 04:36:10 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 06 Sep 2006 10:36:10 +0200
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <1157463143.871754.119180@d34g2000cwd.googlegroups.com>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
	<1157129694.958006.40250@i3g2000cwc.googlegroups.com>
	<44fc4ebe$0$27243$636a55ce@news.free.fr>
	<1157463143.871754.119180@d34g2000cwd.googlegroups.com>
Message-ID: <44fe887c$0$29915$636a55ce@news.free.fr>

lazaridis_com wrote:
> Bruno Desthuilliers wrote:
>> lazaridis_com wrote:
>>> ?/? Bruno Desthuilliers ??????:
>>>> lazaridis_com wrote:
>>>>> John Salerno wrote:
>>>>>> Are there any major differences between these two? It seems they can
>>>>>> both be used with TurboGears, and SQLAlchemy with Django. I'm just
>>>>>> wondering what everyone's preference is, and why, and if there are even
>>>>>> more choices for ORM.
>>>>>>
>>>>>> Thanks.
>>>>> You can review the Persit Case, which will shortly evaluate the stated
>>>>> ORM's:
>>>>>
>>>>> http://case.lazaridis.com/wiki/Persist
>>>>>
>>>>> It is possibly of importance to remember some requirements which should
>>>>> be relevant for an persistency mechanism targetting an OO language:
>>>> RDBMS are not "persistency mechanism", they are data management tools.
>>> possibly.
>>>
>>> but this is not relevant, as the "Persist" case does not deal with
>>> RDBMS.
>>>
>> Then your post is irrelevant since there's a clear indication that the
>> OP question was about RDBMS integration in Python (hint: SQLObject and
>> SQLAlchemy both start with 'SQL').
> ...
> 
> Of course it's relevant.

Of course not.

> "I'm just wondering what everyone's preference is, and why, and if
> there are even more choices for ORM."

You may not know it but the R in ORM stands for Relational, which
actually implies a RDBMS.

> The "persist case" evaluates python persistency 

Once again, it has nothing to do with persistency. I can use an ORM
connected to an in-memory SQLite db.

> systems (or
> mechanisms), and will show my personal preference:

I don't give a damn about your "personal preferences".

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From felipe.lessa at gmail.com  Thu Sep 21 09:17:46 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Thu, 21 Sep 2006 10:17:46 -0300
Subject: Decorator cllass hides docstring from doctest?
In-Reply-To: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>
References: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>
Message-ID: <c2701f5c0609210617r170da039i5887a14ad177ad5d@mail.gmail.com>

2006/9/21, Berthold H?llmann <berthold at despammed.com>:
> Saving the following code to a file and running the code through
> python does not give the expected error. disableling the "@decor" line
> leads to the expected error message. Is this a bug or an overseen
> feature?

Try the new_decor class described below:

>>> class decor(object):
...     def __init__(self, f):
...             self.f = f
...     def __call__(self, *args, **kw):
...             return self.f(*args, **kw)
...
>>> class new_decor(object):
...     def __init__(self, f):
...             self.f = f
...             self.__doc__ = f.__doc__
...             self.__name__ = f.__name__
...     def __call__(self, *args, **kw):
...             return self.f(*args, **kw)
...
>>> def f(a, b):
...     '''
...     >>> f(1, 2)
...     False
...     >>> f(2, 2)
...     False
...     '''
...     return a == b
...
>>> f.__doc__
'\n\t>>> f(1, 2)\n\tFalse\n\t>>> f(2, 2)\n\tFalse\n\t'
>>> decor(f).__doc__ == f.__doc__
False
>>> new_decor(f).__doc__ == f.__doc__
True


-- 
Felipe.

From chris.cavalaria at free.fr  Mon Sep 25 10:54:54 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Mon, 25 Sep 2006 16:54:54 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <ef8p2c$9pt$2@news.albasani.net>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
	<ef8p2c$9pt$2@news.albasani.net>
Message-ID: <4517eda8$0$23410$636a55ce@news.free.fr>

Georg Brandl a ?crit :
> Christophe wrote:
>> Steven D'Aprano a ?crit :
>>> By memory, in an thread about the same topic just a few days ago, 
>>> Fredrik
>>> Lundh posted a link to Perl's FAQs that suggests a method for 
>>> "validating"
>>> email addresses: treat it like a password and ask the user to type it
>>> twice. That will protect against simple typos and input errors.
>>
>> I hate that thing. When I see that, I type my email once and 
>> copy/paste into the second edit box. This is useless AND annoying at 
>> the same time.
> 
> It may be for you, but there certainly are users that misspel their
> e-mail address more frequently, just like passwords. And therefore it's a
> nice touch to spare both the original submitter and the owner of the
> misspelled address more work.

Which proportion of the people that sometimes misspell their e-mail also 
use cut&paste when faced with "please type your e-mail twice" web pages?


From siona at chiark.greenend.org.uk  Thu Sep 28 11:26:34 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 28 Sep 2006 16:26:34 +0100 (BST)
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<mailman.743.1159304856.10491.python-list@python.org>
	<1159366508.538841.252660@e3g2000cwe.googlegroups.com>
Message-ID: <QGq*QPVrr@news.chiark.greenend.org.uk>

Ben Sizer <kylotan at gmail.com> wrote:
>skip at pobox.com wrote:
>> Yeah, I use it from time to time:
>>
>>     for foo in bar:
>>         if foo matches some condition:
>>             print "sail to tahiti!"
>>             break
>>     else:
>>         print "abandon ship!"
>
>As a C++ programmer (which I'm sure undermines my argument before
>you've even read it...), this feels 'backwards' to me. Although I am no
>purist, the 'else' typically implies failure of a previous explicit
>condition, yet in this case, it's executed by default, when the
>previous clause was successfully executed. It would seem more natural
>if the else clause was triggered by 'bar' being empty, [ ... ]

It does:

>>> for foo in []:
...     print foo
... else:
...     print 'else'
...
else

I think it's clearer to see by comparing while with if:

if False:
    do nothing
else:
    do something

while False:
    do nothing
else:
    do something

and getting to the for behaviour from while is trivial.

That said, I've not had much call for it and was kind of surprised to
find myself writing a genuine for ... else the other week. But it was
the obvious way to do the task at hand, and I was happy it was there.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From anthra.norell at tiscalinet.ch  Thu Sep  7 17:18:47 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Thu, 7 Sep 2006 23:18:47 +0200
Subject: Extracting text from a string
Message-ID: <000901c6d2c3$35435a60$0201a8c0@mcuf7>

s = '''<span class="sale">
     $14.99
    </span>, <span class="sale">
     $27.99
    </span>, <span class="sale">
     $66.99
    </span>, <span class="sale">
     $129.99
    </span>, <span class="sale">
     $254.99
   </span>'''

>>> for line in [l.strip () for l in s.splitlines ()]:
          if line [0] == '$': print line

$14.99
$27.99
$66.99
$129.99
$254.99

Why parse? Why regular expressions? 

Frederic




From larry.bates at websafe.com  Wed Sep 20 09:11:02 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 20 Sep 2006 08:11:02 -0500
Subject: include statement
In-Reply-To: <1158735048.114574.56190@e3g2000cwe.googlegroups.com>
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
	<mailman.314.1158733422.10491.python-list@python.org>
	<1158735048.114574.56190@e3g2000cwe.googlegroups.com>
Message-ID: <zqSdnfKrkdido4zYnZ2dnUVZ_smdnZ2d@comcast.com>

joakim.hove at gmail.com wrote:
> Thanks to all who took time to answer!
> 
> 
>>> is it possible in python to include another python source file into the
>>> current namespace, i.e.completely analogous to the #include statement
>>> in C.
> 
> [...]
> 
>> Tell us why you are contemplating such a thing, and someone
>> here will help you implement it the "Pythonic" way.
> 
> My application has a configuration file where lots of variables are
> set. (The configuration file is python source, so there is no
> home-brewed parsing involved.) The configuration file is starting to
> get quite large and unwieldy, so for this reason I would like to split
> it in several files.
> 
> I know I could do:
> from configA import *
> from configB import *
> 
> But I felt that the import statemant was 'more' than I wanted. Maybe I
> am just pedantic.
> 
> Regards
> 
> Joakim
> 
I might also suggest that you consider using ConfigParser module to store
your "variables".  If you are worried about performance, I can tell you that
I use it to feed thousands of lines of configuration info into one of my
applications (this app has 5 of these files) and ConfigParser handles them
so quickly that performance is NOT a problem.  The format of the file is
easily understandable by nearly every user which means I don't have to
worry with someone not understanding Python's syntax.  If someone gets
something wrong in a file that gets included, it is harder to take a sane
default or handle the error than with ConfigParser.  Just a suggestion that
I hope helps.

-Larry Bates

or


From larry.bates at websafe.com  Wed Sep  6 16:56:19 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 06 Sep 2006 15:56:19 -0500
Subject: Data sticking around too long
In-Reply-To: <1157575592.588966.17100@m73g2000cwd.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
	<1157574434.643964.218110@m73g2000cwd.googlegroups.com>
	<1157575592.588966.17100@m73g2000cwd.googlegroups.com>
Message-ID: <44FF35F3.50503@websafe.com>

CedricCicada at gmail.com wrote:
> Skip and Matimus,
> 
> Thank you for your replies.  Putting initialization in the constructor
> gets me what I want.  But I'd like to understand this a bit more.
> Here's another script:
> 
> class ScannerCommand:
>     taskName = ''
>     scanList = []
> 
>     def __init__(self, data):
>         self.scanList = []
>         self.scanList.append(data)
> 
> if __name__ == '__main__':
>     c1 = ScannerCommand("c1")
>     c2 = ScannerCommand("c2")
>     print "C1: "
>     for data in c1.scanList:
>         print "   " + data
>     print "C2: "
>     for data in c2.scanList:
>         print "   " + data
> 
> And here's the output, which is what I want:
> C1:
>    c1
> C2:
>    c2
> 
> If scanList is a class variable shared between all instances of the
> class, then C1's list should have held "C2" when I printed it, since C2
> came along and changed scanList.  But obviously, here it's not a class
> variable and the two instances have their own lists.
> 
> If I don't initialize scanList in the constructor, then scanList is a
> class variable (in C++, it would be a static member of the class) that
> is shared among all instances of the class.  If I do initialize
> scanList in the constructor, then scanList magically becomes an
> instance variable, with every instance of the ScannerCommand object
> having its own scanList list???  Is that really the way it works?  I
> would have thought the C++ way, with some special syntax to distinguish
> a class variable from an instance variable, would be much easier to
> work with.
> 
> Thanks again!
> 
> Rob Richardson
> RAD-CON, Inc.
> Bay Village, OH
> 

You shadowed the class attribute scanList by creating an instance
variable called self.scanList in the __init__ method:

         self.scanList = []

Comment that line out and see what you get.

-Larry Bates


From MonkeeSage at gmail.com  Fri Sep 29 02:07:06 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 28 Sep 2006 23:07:06 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
References: <mailman.1984.1159445104.10490.python-list@python.org>
	<mailman.878.1159449832.10491.python-list@python.org>
	<1159475984.109684.227700@h48g2000cwc.googlegroups.com>
	<1159503458.273771.24310@m73g2000cwd.googlegroups.com>
	<xn2Tg.353$Lv3.140@newsread1.news.pas.earthlink.net>
Message-ID: <1159510026.109904.178270@i3g2000cwc.googlegroups.com>

Dennis Lee Bieber wrote:
> 	Though if this suddenly inspires the creation of a Common LISP
> interpreter written in Python, I may want to close my eyes <G>

Hehe! I actually thought of trying that once, but I realized that I'm
too stupid and / or lazy to pull it off. ;)

Regards,
Jordan



From tenax.raccoon at gmail.com  Thu Sep  7 13:20:13 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 7 Sep 2006 10:20:13 -0700
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
Message-ID: <1157649612.956390.306640@d34g2000cwd.googlegroups.com>

Kevin D. Smith wrote:
> I've written a simple Python extension for UNIX, but I need to get it
> working on Windows now.  I'm having some difficulties figuring out how
> to do this.  I've seen web pages that say that MS Visual Studio is
> required, and other that say that's not true, that MinGW will work.
> Then there is Mike Fletcher's web page
> (http://www.vrplumber.com/programming/mstoolkit/) that describes in
> detail how to build extensions, but most of the links to external
> software are no longer valid.  I think it's safe to say that I am
> completely lost, as there appears to be no authoritative, up-to-date
> description on how to make this work.
>
> --
> Kevin D. Smith

I don't know about MinGW, but you can get the Microsoft compilers by
installing Visual C++ 2005 Express.  I'm guessing the old toolkit is
deprecated.  While you must register each Visual Studio Express module
that you download, I don't think the actual command-line tools are
encumbered.

Why not try it out and let us know how it goes?

(Visual Studio 2005 Express:
http://msdn.microsoft.com/vstudio/express/)

    --Jason



From tuomas.vesterinen at pp.inet.fi  Sat Sep 16 08:32:54 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Sat, 16 Sep 2006 12:32:54 GMT
Subject: Catching toplevel move and resize
Message-ID: <W9SOg.169$gh6.143@read3.inet.fi>

 From a PyGTK component I would like to react moving and resizing the 
toplevel window. I try to connect the toplevel 'frame-event' to my 
callback, but the toplevel do not fire on moving or resizing. Any 
suggestions?

Tuomas
(Linux, Python 2.3, GTK 2.6.7)


From hugh.frater at gmail.com  Fri Sep 15 05:57:46 2006
From: hugh.frater at gmail.com (Hugh)
Date: 15 Sep 2006 02:57:46 -0700
Subject: add without carry
In-Reply-To: <YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
Message-ID: <1158314266.892914.73430@e3g2000cwe.googlegroups.com>

Thankyou everyone this gives me something to work with.

Hugh



From keith at keithperkins.net  Sat Sep 30 06:32:10 2006
From: keith at keithperkins.net (Keith Perkins)
Date: Sat, 30 Sep 2006 10:32:10 GMT
Subject: another distutils question
References: <mailman.966.1159552468.10491.python-list@python.org>
	<pan.2006.09.29.23.24.21.541676@keithperkins.net>
Message-ID: <pan.2006.09.30.10.32.09.432711@keithperkins.net>

Thanks everyone, for your answers.  They've been very helpful.
Keith


From Bulkan at gmail.com  Wed Sep  6 23:45:39 2006
From: Bulkan at gmail.com (placid)
Date: 6 Sep 2006 20:45:39 -0700
Subject: newbe who is also senior having a senior moment
In-Reply-To: <XyMLg.24585$rP1.20025@news-server.bigpond.net.au>
References: <XyMLg.24585$rP1.20025@news-server.bigpond.net.au>
Message-ID: <1157600739.228979.74780@h48g2000cwc.googlegroups.com>


stan wrote:
> I am a complete newbe to python and only got here because I am trying to set
> up iTunes in game Second Life.  Have followed all instructions but keep
> getting an error reading from my XP Pro OS as follows
>
> File "C:\Python24\2L file for iTunes", line 4, in -toplevel-
>     import win32com.client
> ImportError: No module named win32com.client
>
> can someone pls point me in the right direction here as I am trying to
> urgently fix the file for someones birthday in game (I know pathetic)
>
> thanks
> Stan

you need the win32 python extensions

https://sourceforge.net/projects/pywin32/



From celiadoug at mchsi.com  Fri Sep  8 16:10:38 2006
From: celiadoug at mchsi.com (Doug Stell)
Date: Fri, 08 Sep 2006 20:10:38 GMT
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>

Try www.TextPad.com. I've used it for years and love it. It
understands many programming language constructs and can be taught to
understand python so that things show up in color.

On 7 Sep 2006 13:18:22 -0700, "Omar" <outstretchedarm at hotmail.com>
wrote:

>I'd love the perfect editor that would be:
>
>a) free
>
>b) enable me to drag and drop code snippets from a sort of browser into
>the code
>
>c) can run programs right from within
>
>d) can edit
>      - PYTHON
>      - Javascript
>      - HTML
>      - actionscript (since I'm also learning flash)
>
>e) easy to learn
>
>suggestions?



From george.sakkis at gmail.com  Mon Sep 11 14:36:22 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 11 Sep 2006 11:36:22 -0700
Subject: efficient text file search.
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
Message-ID: <1157999782.414287.83890@p79g2000cwp.googlegroups.com>

noro wrote:

> Is there a more efficient method to find a string in a text file then:
>
> f=file('somefile')
> for line in f:
>     if 'string' in line:
>          print 'FOUND'
>
> ?

Is this something you want to do only once for a given file ? The
replies so far seem to imply so and in this case I doubt that you can
do anything more efficient. OTOH, if the same file is to be searched
repeatedly for different strings, an appropriate indexing scheme can
speed things up considerably on average.

George



From norman at khine.net  Tue Sep 12 09:26:07 2006
From: norman at khine.net (Norman Khine)
Date: Tue, 12 Sep 2006 15:26:07 +0200
Subject: Validation of email
Message-ID: <4506B56F.20507@khine.net>

Hello,
What is the best way to generate a long authentication string and email
this so that the user can reply and verify that the email address they
have provided is authentic, similar I guess to the way Bugzilla works?

Should this be server side or client?

How would one tackle an expiry limit on this - i.e. set the string a
time limit?

Any useful links of implementations in python are most welcomed.

Cheers

Norman



From jdemoor at gmail.com  Fri Sep  1 09:01:59 2006
From: jdemoor at gmail.com (jdemoor at gmail.com)
Date: 1 Sep 2006 06:01:59 -0700
Subject: Question about import and namespace
In-Reply-To: <ed96t9$l81$03$1@news.t-online.com>
References: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>
	<ed96t9$l81$03$1@news.t-online.com>
Message-ID: <1157115719.609101.73660@i42g2000cwa.googlegroups.com>

Thanks for the replies.

> You can do both
>
> from module import *
> import module
>
> as these kinds of import are not mutually exclusive.

Would this run the code in 'module' twice, or just make the objects in
it accessible by several names ?



From jeremy+complangpython at jeremysanders.net  Thu Sep 21 04:58:04 2006
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Thu, 21 Sep 2006 09:58:04 +0100
Subject: naming objects from string
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<mailman.372.1158814064.10491.python-list@python.org>
	<1158816105.593369.176280@i42g2000cwa.googlegroups.com>
Message-ID: <eetk6s$2dm$2@gemini.csx.cam.ac.uk>

manstey wrote:

> so they might provide a list of names, like 'bob','john','pete', with 3
> structures per name, such as 'apple','orange','red' and I need 9 tuples
> in my code to store their data:
> 
> bob_apple=()
> bob_orange=()
> ..
> pete_red=()

I really think you should be using dictionaries here. You don't want to be
messing around creating random variables in the local or global namespace.

For instance

myvals = {}
myvals['bob'] = {}
myvals['pete'] = {}
...
myvals['bob']['apple'] = (1,2,3,4)
myvals['bob']['orange'] = (2,3,4)
myvals['pete']['red'] = (4,5,6,7)

and so on

>>> myvals
{'pete': {'red': (4, 5, 6, 7)}, 'bob': {'orange': (2, 3, 4), 'apple': (1, 2,
3,4)}}

-- 
Jeremy Sanders
http://www.jeremysanders.net/


From xiong.xu.cn at gmail.com  Fri Sep  8 04:11:06 2006
From: xiong.xu.cn at gmail.com (xiong.xu.cn at gmail.com)
Date: 8 Sep 2006 01:11:06 -0700
Subject: Javadoc style python manual?
Message-ID: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>

Hi there,

I'm new to python and I'm from the java world.
Though I love to learn python, I'm not very comfortable with the python
documentation.
Because when i read jdk doc, i can see the class hierachy, class
member, class methods etc in html docs. It's very easy for me to
understand the Java language.
But in python, i find it kind of inconvient.

Any advice?

Thx,
Xiong



From iker.arizmendi at gmail.com  Thu Sep 28 18:52:10 2006
From: iker.arizmendi at gmail.com (iker.arizmendi at gmail.com)
Date: 28 Sep 2006 15:52:10 -0700
Subject: releasing memory to malloc
In-Reply-To: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
Message-ID: <1159483930.240942.260310@k70g2000cwa.googlegroups.com>

The workaround I've settled for uses the shelve module and calls
to gc.collect() to put a cap on the amount of memory the Python
allocator consumes. A bit more intrusive but it gets the job done.

Would a gc method that released memory to malloc be something
worth adding to Python? Or are there reasons why allowing this is
a bad idea?

Iker

iker.arizmendi at gmail.com wrote:
> Is there any way to get Python to release memory back to the
> C allocator? I'm currently running a script that goes through
> the following steps:
>
> 1) Creates a very large number of Python objects to produce
> a relatively small data structure that sits in a C extension.
> The Python objects consume quite a bit of memory.
>
> 2) Releases all the Python objects.
>
> 3) Invokes a function of said C extension for further
> processing. This step needs as much memory as possible.
>
> I'd like step 2 to return memory to the C allocator so that it
> is available to the extension in step 3 (which uses malloc).
> 
> Regards,
> Iker Arizmendi



From onurb at xiludom.gro  Tue Sep  5 04:02:40 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 05 Sep 2006 10:02:40 +0200
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <1157428071.396162.168500@74g2000cwt.googlegroups.com>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
	<44fcb7fb$0$31422$626a54ce@news.free.fr>
	<1157428071.396162.168500@74g2000cwt.googlegroups.com>
Message-ID: <44fd2f22$0$15660$626a54ce@news.free.fr>

Carl Banks wrote:
> Bruno Desthuilliers wrote:
>> In python, assignement is a statement, not an expression, so there's no
>> way you could write 'if obj = None' by mistake (-> syntax error). So
>> this style is unpythonic. Also, None is a singleton, and identity test
>> is way faster than equality test.
> 
> Playing Devil's advocate here: if you were to write "x!=None", then x's
> __eq__ method is invoked, which might not account for the possibility
> that the other operand is None.
> 
> However, if you write "None!=x", then None's __eq__ method is invoked,
> which accounts for any given type.
> 

Well... Since we all know it should be an identity test anyway... <g>



-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From gagsl-py at yahoo.com.ar  Wed Sep 20 15:39:42 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 16:39:42 -0300
Subject: include statement
In-Reply-To: <1158735048.114574.56190@e3g2000cwe.googlegroups.com>
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
	<mailman.314.1158733422.10491.python-list@python.org>
	<1158735048.114574.56190@e3g2000cwe.googlegroups.com>
Message-ID: <7.0.1.0.0.20060920163805.020e5ae8@yahoo.com.ar>

At Wednesday 20/9/2006 03:50, joakim.hove at gmail.com wrote:

>My application has a configuration file where lots of variables are
>set. (The configuration file is python source, so there is no
>home-brewed parsing involved.) The configuration file is starting to
>get quite large and unwieldy, so for this reason I would like to split
>it in several files.
>
>I know I could do:
>from configA import *
>from configB import *
>
>But I felt that the import statemant was 'more' than I wanted. Maybe I
>am just pedantic.

You can limit the range of "from...import *" declaring a __all__ 
variable in the imported module; this way you import exactly what is 
needed (and the rest is kept as "private")



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From Benjamin.Barker at gmail.com  Sat Sep 30 08:31:14 2006
From: Benjamin.Barker at gmail.com (Ben)
Date: 30 Sep 2006 05:31:14 -0700
Subject: Storing records from a parsed file
Message-ID: <1159619474.342225.319660@h48g2000cwc.googlegroups.com>

Apologies if this is te wrong place to post -  I realise the question
is pretty basic...

I have a simple python script that parses a text file and extracts data
from it. Currently
this data is stored in a list by  a function, each element of which is
an instance of a class with
member variables to take the data. So for example I have:

camera_list.append(camera(alpha,beta,gamma....))

where

class camera:
     def __init__(self,name,site,address,text):
         self.name=name
         self.site=site
         self.address=address
         self.text=text

Every time I append an item to this list I pass in the constructor
parameters so end up with all my data in the list which can then be
accessed by doing myList[x].name (for example)

This seemed like  a nice solution until I tried to put the entire
parsing program into its own class. I did this so that I could parse
different types of file:

thistype.getdata()
thattype.getdata()
...
thisfile and thatfile would have the same function definitions, but
different implementations as needed.

But now my list generating funtion needs to create inner "camera"
classes when it is itself a member funcition of a class. This seems to
be causing problems - I coudl possibly use nested dictionaries, but
this sounds messy. Ideally I would use structs defined inside the
outer class, but pythn doesn't seem to support these.

I hope I haven't rambled too much here - I'm new to python so have
probably done some silly things :-)

Cheers,

Ben



From john106henry at hotmail.com  Tue Sep 12 17:12:13 2006
From: john106henry at hotmail.com (John Henry)
Date: 12 Sep 2006 14:12:13 -0700
Subject: Help me use my Dual Core CPU!
In-Reply-To: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
Message-ID: <1158095533.359352.65880@m73g2000cwd.googlegroups.com>

I don't know what CPython is but I have developed a Python application
under Windows that utilize the Dure Core CPU when it's present.

I don't know that I can say for sure that "threads won't help".  Have
you done some testing before using other approaches to see if it indeed
won't help?


Simon Wittber wrote:
> I've just bought a new notebook, which has a dual core CPU.
>
> I write cross platform games in Python, and I'd really like to be able
> to use this second core (on my machine, and on user's machines) for any
> new games I might write.
>
> I know threads won't help (in CPython at least) so I'm investigating
> other types of concurrency which I might be able to use. I really like
> the PyLinda approach, however I need to be able to pass around all the
> simple python types, which PyLinda won't help me with. Also, PyLinda is
> more focused on distributing computing; I really only want to have 2
> processes cooperating (or 4, if I had 4 CPUs/cores etc).
>
> Is there any cross platform way to share python objects across
> processes? (I've found POSH, but it's old, and doesn't appear to be
> maintained). I could implement my own object space using shared memory,
> but from what I can see, this is not available on Win32.
>
> Are there any other concurrency options I've not discovered yet?
> 
> 
> -Sw.



From grante at visi.com  Fri Sep 15 12:00:47 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 16:00:47 -0000
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
	<4mv51sF7t5lmU1@uni-berlin.de> <12glesm56ghquc4@corp.supernews.com>
	<mailman.136.1158334482.10491.python-list@python.org>
Message-ID: <12gljhfc4f81p97@corp.supernews.com>

On 2006-09-15, Sergei Organov <osv at javad.com> wrote:

>>>> It's not the issue here, but to specify the outgoing port
>>>> call bind(('', portnum)) before connect().

>> It's an interesting thing to know, but I've been doing TCP
>> stuff for many years and never run across a situation where
>> it's something I needed to do.  If somebody in this thread
>> actually does need to do it, I'd be curious bout why...
>
> Well, one of ftpd implementations I have here (C code from RTEMS) does
> this:
>
>       /* anchor socket to avoid multi-homing problems */
>       data_source = info->ctrl_addr;
>       data_source.sin_port = htons(20); /* ftp-data port */
>       if(bind(s, (struct sockaddr *)&data_source, sizeof(data_source)) < 0)
>         ERROR;
>       ...
>       if(connect(s,
>           (struct sockaddr *)&info->def_addr,
>           sizeof(struct sockaddr_in)) < 0
>       )
>         ERROR;
>
> I've no idea what "multi-homing problems" are, but maybe it gives you
> some hint?

I don't know what "multi-homing problems are either".
Apparently there must be some ftp clients that require the
source port for the data connection to be port 20.

The RFC is pretty vague. It does say the server and clinet but
must "support the use of the default data port [port 20]" or
something like that. But, it's not all all clear to me what
that is supposed to mean.  My reading is that they must support
the default port as the destination port for a data connection
untill it's been changed by receipt of a PORT command.

But, like I said, is very vague, and I suppose some client
implementor could have read it as the server must use the
default data port as the source port for a data connection.

-- 
Grant Edwards                   grante             Yow!  Ha ha  Ha ha Ha ha
                                  at               Ha Ha Ha Ha -- When will I
                               visi.com            EVER stop HAVING FUN?!!


From felipe.lessa at gmail.com  Tue Sep  5 20:55:53 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Tue, 5 Sep 2006 21:55:53 -0300
Subject: Higher-level OpenGL modules
In-Reply-To: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
References: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
Message-ID: <c2701f5c0609051755j2ffc956dwbb3f0a1f111936fe@mail.gmail.com>

5 Sep 2006 03:44:47 -0700, Leon <peonleon at gmail.com>:
> Greetings,
>
> Does anybody know of or is working on any python modules that allow for
> a direct but higher-level interface to OpenGL? For example, quick
> functions to draw lines, curves, and basic shapes; define hsb color
> mode; fill and stroke operations; easy loading of images, svg files,
> etc (much like the processing language -
> http://www.processing.org/reference/index.html).  The closest thing I
> could find was devachan - http://www.cesaremarilungo.com/sw/devachan/,
> but its very limited. Any response would be greatly appreciated.

Soya? I don't know if it fulfill your needs, though.
http://home.gna.org/oomadness/en/soya/


-- 
Felipe.


From raschulmanxx at verizon.net  Tue Sep  5 20:22:12 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Wed, 06 Sep 2006 00:22:12 GMT
Subject: Unicode string handling problem
Message-ID: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>

The following program fragment works correctly with an ascii input
file.

But the file I actually want to process is Unicode (utf-16 encoding).
The file must be Unicode rather than ASCII or Latin-1 because it
contains mixed Chinese and English characters.

When I run the program below I get an attribute_count of zero, which
is incorrect for the input file, which should give a value of fifteen
or sixteen. In other words, the count function isn't recognizing the
", characters in the line being read. Here's the program:

in_file = open("c:\\pythonapps\\in-graf1.my","rU")
try:
    # Skip the first line; make the second available for processing
    in_file.readline()
    in_line = readline()
    attribute_count = in_line.count('",')
    print attribute_count
finally:
    in_file.close()

Any suggestions?

Richard Schulman
(For email reply, delete the 'xx' characters)


From chris.cavalaria at free.fr  Thu Sep 21 10:15:27 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Thu, 21 Sep 2006 16:15:27 +0200
Subject: Python 2.5 WinXP AMD64
In-Reply-To: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
Message-ID: <45129e77$0$23923$626a54ce@news.free.fr>

Brendan a ?crit :
> Hello,
> I just tried to use the Windows XP installer for Python 2.5 AMD64 but I
> get the error message: "Installation package not supported by processor
> type"
> 
> I am running Windows XP Pro on an AMD Athon 64 Processor.
> 
> Do I need to have a 64-bit OS to use this version?

To be exact, you need a 64bit Windows OS on a 64bit cpu.


From jstroud at mbi.ucla.edu  Thu Sep 21 23:47:06 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 03:47:06 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.437.1158894908.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<mailman.437.1158894908.10491.python-list@python.org>
Message-ID: <_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>

Robert Kern wrote:
> James Stroud wrote:
> 
>> Hello All,
>>
>> This is annoying. I am trying to build scipy right now but every .so 
>> file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl 
>> -shared" to the ld flags.
> 
> 
>> I'm running Linux FC4 on a dual intel p4 (~3.2 GHz) with sundry 
>> libraries in non-standard places. Is this non-standard part what's 
>> killing me?
> 
> 
> It's possible that distutils is not finding the information about how 
> the python interpreter was built. Did you build your own python(1)? Is 
> the information in $PREFIX/lib/python2.4/config/ accurate?
> 

I did build my own python 2.5, yesterday, requiring me to rebuild all 
extensions. Everything I do is compiled by hand as joe-user. I'm in a 
situation where I can't do RPM (and I don't have root on my work machine 
(theoretically ;-)) so, to be a good joe-user, everything I add goes 
into the prefix:

$HOME/Programs

This is the listing from $HOME/Programs/lib/python2.5/config:

euler 6% ls
total 4092
    8 config.c       12 install-sh*       44 Makefile       8 python.o 
    8 Setup.config
    8 config.c.in  3960 libpython2.5.a    12 makesetup*    24 Setup 
    8 Setup.local

The build process, by the way, required my copying libpython2.5.a to 
$HOME/Programs/lib.

The text files Setup.config and Setup.local do not seem to have terribly 
specific information in them. Which file in particular should I inspect?

I did not capture output from the build and I could not find a file with 
the word "log" in it that appears to be a build log. The jist of the 
problem is that first it can't find symbols from libpython2.5, then from 
  libthread, etc. Then, it complains about no "MAIN__" when linking the 
.so files with g77 and no "main" with gcc (which is curious), so I must 
include the -shared flag, after including -llibrary type flags for all 
of the libraries it doesn't know about.

If its necessary, I can run setup.py build again and send the output to 
a file and post that to scipy-dev if you think it might be helpful.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From ilias at lazaridis.com  Tue Sep 19 12:25:30 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 19 Sep 2006 09:25:30 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <4nadf6F9bgmuU1@uni-berlin.de>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<4nadf6F9bgmuU1@uni-berlin.de>
Message-ID: <1158683128.179179.13900@b28g2000cwb.googlegroups.com>

Diez B. Roggisch wrote:
> Ilias Lazaridis wrote:
> > Ilias Lazaridis wrote:
> >> I understand that I can use __metaclass__ to create a class which
> >> modifies the behaviour of another class.
> >>
> >> How can I add this metaclass to *all* classes in the system?
> >>
> >> (In ruby I would alter the "Class" class)
> >
> > I got confused from the discussion about __metaclass__.
> >
> > possibly a little more practical.
> >
> > I like to add a method "writeDebug(self, msg)" to all (or the most
> > possible) classes in the system.
> >
> > How do I do this?
> >
> > * with new style classes
> > * with old style classes
>
> OMFG. For asking the question (paraphrased) "why do you want to do this",
> Mr. Spealman received an
>
> http://case.lazaridis.com/wiki/Please#OffTopicPosts
>
> But now you do exactly that - give more details. Maybe this could teach you
> the lesson that the variance of input you get here to your questions is
> worth considering?
>
> But I've got the wicked feeling that this won't happen...

I've not given more details, but less.

Just simplified my request.

.



From peace.is.our.profession at gmx.de  Thu Sep 28 04:22:51 2006
From: peace.is.our.profession at gmx.de (Mirco Wahab)
Date: Thu, 28 Sep 2006 10:22:51 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <mailman.868.1159427578.10491.python-list@python.org>
References: <mailman.868.1159427578.10491.python-list@python.org>
Message-ID: <efg10i$olr$1@mlucom4.urz.uni-halle.de>

Thus spoke fdu.xiaojf at gmail.com (on 2006-09-28 09:10):

> String formatting can be used to converting an integer to its octal or 
> hexadecimal form:
>  >>> a = 199
>  >>> "%o" % a
> '307'
>  >>> "%x" % a
> 'c7'
> 
> But, can string formatting be used to convert an integer to its binary 
> form ?

I didn't fell over this problem so far but
I *would* have expected to find something
like a 'pack' operator (as in Perl).

And voil?, there is (even basically identical to Perl):

  from struct import *

  a = 199
  a_bin_str = pack('L', a)



Regards

Mirco


From hugh.frater at gmail.com  Fri Sep 15 04:17:54 2006
From: hugh.frater at gmail.com (Hugh)
Date: 15 Sep 2006 01:17:54 -0700
Subject: add without carry
Message-ID: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>

I would like to perform an addition without carrying of two integers...
I've got no idea how to do this in python, although I've been using it
for web/cgi/db work for a few years now.

Any help would be great.

Hugh



From snowf200807 at gmail.com  Wed Sep  6 05:42:51 2006
From: snowf200807 at gmail.com (snowf)
Date: 6 Sep 2006 02:42:51 -0700
Subject: How to get all the file of a oppoint directory from a FTP
In-Reply-To: <mailman.66.1157530209.5279.python-list@python.org>
References: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>
	<mailman.66.1157530209.5279.python-list@python.org>
Message-ID: <1157535771.687178.102240@e3g2000cwe.googlegroups.com>


Steve Holden wrote:
> snowf wrote:
> > There are no such a method using to download a whole directory  in  the
> > lib of  ' ftplib '.
> > thanks for anybody's help!
> >
> If your Python distrbution contains a "Tools" directory you should look
> for the "ftpmirror.py" utility in it. If you don't have Tools then you
> can extract them from the Python source tarball.
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden
Thank you for your reply   .

: )



From kitoogofred at yahoo.co.uk  Wed Sep 27 12:35:31 2006
From: kitoogofred at yahoo.co.uk (Fred Kitoogo)
Date: Wed, 27 Sep 2006 17:35:31 +0100 (BST)
Subject: Fwd: Recursive Tree in Python
Message-ID: <20060927163531.67981.qmail@web25401.mail.ukl.yahoo.com>

Note: forwarded message attached.


Kitoogo Fredrick Edward


	
	
		
___________________________________________________________ 
All new Yahoo! Mail "The new Interface is stunning in its simplicity and ease of use." - PC Magazine 
http://uk.docs.yahoo.com/nowyoucan.html
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From bayerj at in.tum.de  Mon Sep  4 10:58:00 2006
From: bayerj at in.tum.de (bayerj)
Date: 4 Sep 2006 07:58:00 -0700
Subject: threading support in python
In-Reply-To: <mailman.10336.1157379308.27775.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
Message-ID: <1157381880.697001.260070@m73g2000cwd.googlegroups.com>

Hi,

GIL won't go. You might want to read
http://blog.ianbicking.org/gil-of-doom.html .

Regards,
-Justin



From jmpurser at gmail.com  Tue Sep  5 01:12:05 2006
From: jmpurser at gmail.com (John Purser)
Date: Mon, 04 Sep 2006 22:12:05 -0700
Subject: why have to "from compiler import *"
In-Reply-To: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
References: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
Message-ID: <1157433125.5378.1.camel@localhost.localdomain>

On Mon, 2006-09-04 at 21:40 -0700, mark_galeck_spam_magnet at yahoo.com
wrote:
> Hi,  why does
> 
> >>> import compiler
> >>> compileFile("foo.py")
> 
> complain name 'compileFile' not defined.  But
Because 'compileFile' is not defined.  But I think you'll find that
compiler.compileFile IS defined.

John Purser


> 
> >>>from compiler import *
> 
> works.  Why?  (I did read the tutorial, it seems to say "import module"
> should work.  
> 
> Thank you,  Mark
> 



From brian at sweetapp.com  Mon Sep 11 12:13:57 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Mon, 11 Sep 2006 18:13:57 +0200
Subject: Behaviour of classes (tired of writing too much)
In-Reply-To: <1157990040.000384.311320@m73g2000cwd.googlegroups.com>
References: <1157990040.000384.311320@m73g2000cwd.googlegroups.com>
Message-ID: <45058B45.9010401@sweetapp.com>

mpn at mic.dtu.dk wrote:
> How do I catch any reference to an instance of a class, i.e., I want to
> run some code as soon as an instance of a class is used in any way.
> (and I don't want to define all of __add__, __ge__ etc etc etc etc etc)

What do you mean by "used in any way"? Which of these are considered usage:

 >>> a = Foo()   # obviously
 >>> b = a       # ?
 >>> a.__gt__(5) # apparently
 >>> a.__gt__    # ?

Anyway, look into __getattr__

Cheers,
Brian


From tdelaney at avaya.com  Tue Sep 19 21:18:22 2006
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Wed, 20 Sep 2006 11:18:22 +1000
Subject: Python programs always open source?
Message-ID: <2773CAC687FD5F4689F526998C7E4E5FF1E9F0@au3010avexu1.global.avaya.com>

Steve Holden wrote:

> Given that many people distribute (enough of) the interpreter with
> their Python programs I wouldn't like the above to be regarded as a
> blanket statement that the Python license doesn't have to be
> considered when distributing the interpreter with program source.

In practice, such a blanket statement can be made because the Python
Software License is so liberal. However, anyone who is distributing any
part of Python should definitely read the license themselves.

Tim Delaney


From ldo at geek-central.gen.new_zealand  Sat Sep 23 08:04:42 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 00:04:42 +1200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net>
Message-ID: <ef37r0$5hj$3@lust.ihug.co.nz>

In message <4nivr5Fan2s7U2 at individual.net>, Bjoern Schliessmann wrote:

> In my C++ code,
> it happens so often that I forget or overread a "!". And if I want
> to understand my functions later on, my brain quite wrinkles
> looking at parentheses, !s, &&s and ||s.

Which is why C++ allows "not", "and" and "or".


From rupole at hotmail.com  Sun Sep 10 15:02:37 2006
From: rupole at hotmail.com (Roger Upole)
Date: Sun, 10 Sep 2006 15:02:37 -0400
Subject: makepy, ADO and dynamic.py
References: <1157833453.539654.197000@i42g2000cwa.googlegroups.com>
Message-ID: <1157914372_18005@sp6iad.superfeed.net>


"Chris Curvey" <ccurvey at gmail.com> wrote in message news:1157833453.539654.197000 at i42g2000cwa.googlegroups.com...
> I'm trying to track down a performance issue in my Windows code, and
> hotshot is telling me that the most time and calls are spent in these
> methods
>
>   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
>    75975 63982.779    0.842 124464.419    1.638
> c:\python24\lib\site-packages\win32com\client\dynamic.py:285(_make_method_)
>    71294 47871.424    0.671 50629.224    0.710
> c:\python24\lib\site-packages\win32com\client\__init__.py:444(_ApplyTypes_)
>
> If I understand correctly, running makepy on the appropriate COM class
> should get rid of the dynamic stuff and let it be called directly.  I
> use ADODB to talk to my database server, and I've run makepy for
> "Microsoft Active X Data Objects 2.8 Library" [1] and on "Microsoft
> ActiveX Data Objects Recordset 2.8 Library", but I'm still seeing the
> call to the dynamic.py class.
>
> Am I right that seeing the calls in "dynamic.py" implies that I'm
> running "makepy" on the wrong thing?  Any idea what I should be running
> makepy on?
>
> [1] I seem to have a bunch of versions of "Microsoft ActiveX Data
> Objects Library", is there a chance that another ADO library is being
> used?
>

The most reliable way to make sure the generated support is used is
to call win32com.client.gencache.EnsureDispatch.  If a typelib can
be found, the corresponding python module will be created if it doesn't
already exist.

       Roger




From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 11:35:07 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 17:35:07 +0200
Subject: Extend file type
References: <1159283661.937621.313690@d34g2000cwd.googlegroups.com>
Message-ID: <slrnehii5b.pnl.sybrenUSE@schuimige.stuvel.eu>

abcd enlightened us with:
> Any suggestions on how to find out?  I did try adding to MyFile....
>
> def __call__(self, *args):
>     print "calling:", args
>     return file.__call__(self, *args)
>
> but I never see that either.

I don't know the answer to your problem, but I can explain why this
doesn't work. __call__ is used when an instance if MyFile is called as
if it were a function:

    mf = MyFile("blabla")
    mf()

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From __peter__ at web.de  Sat Sep  9 07:42:50 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 09 Sep 2006 13:42:50 +0200
Subject: search and replace in a file :: newbie help
References: <1157799381.062540.59580@i42g2000cwa.googlegroups.com>
Message-ID: <edu99t$2l5$03$2@news.t-online.com>

techie2go wrote:

> i m now updating an sql file

> =================
> but the output is just
> 2003-01-04
> and not
> 
> insert into mobilebill values ('2003-01-04', 'OUT', '91804103253', 34,
> 3.2);
> 
> help me in this regard, what did i do wrong...

You can find out yourself if you throw in some print statements:
> for line in lines:
>     #print line
>     inp=line
>     cre2=re.search('.*(\w{3}\s+\d+\,\s+\d+).*',line)
>     (month,day,year)=cre2.group(1).split();
>     cre3=re.compile(',')
>     day=cre3.sub("",day)
>     year='20'+year
>     repstr=year+'-'+months[month]+'-'+day
      print "X", repstr # OK, so far
>     cre4=re.compile('.*(\w{3}\s+\d+\,\s+\d+).*')      
      print "X", cre4.search(line).group(0) # Oops, matches the whole line
                                            # so it will be replaced by the
                                            # reformatted date
>     line=cre4.sub(repstr,line)
>     print line

The minimal fix is to change cre4

cre4=re.compile('(\w{3}\s+\d+\,\s+\d+)')

And here is an alternative:

import re
import sys

lines = open('mb.sql')

months = {
    "Jan": 1,
    "Feb": 2,
    "Mar": 3,
    "Apr": 4,
    # ...
}
r = re.compile(r"(\w{3})\s+(\d+)\,\s+(\d+)")

def fix_date(match):
    month, day, year = match.groups()
    return "20%02s-%02d-%02s" % (year, months[month], day)

for line in lines:
    sys.stdout.write(r.sub(fix_date, line))

You might also consider performing the conversion in the database.

Peter


From steve at holdenweb.com  Tue Sep  5 02:32:53 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 07:32:53 +0100
Subject: What are super()'s semantics?
In-Reply-To: <200609050027.00700.maric@aristote.info>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>	<mailman.10331.1157371523.27775.python-list@python.org>	<1157401761.952353.272090@i3g2000cwc.googlegroups.com>
	<200609050027.00700.maric@aristote.info>
Message-ID: <edj5le$3h1$1@sea.gmane.org>

Maric Michaud wrote:
> Le lundi 04 septembre 2006 22:29, Carl Banks a ?crit :
> 
>>BTW, __class__ is available to instances.  (Were you thinking of
>>__bases__?)
> 
> 
> hmmm, I guess they're not the same, are they ?
> 
> but you're right, __bases__ and some others are class attributes not available 
> in instances,  I wonder where is this documented and I'm not enough familiar 
> with python' source code to find this.
> 
> Also this create weird  things, like a code posted on this list, which was 
> very confusing  and looked to something like :
> 
> In [24]: class A(object) :
>    ....:     __class__ = list
>    ....:
>    ....:
> 
> In [25]: A.__class__
> Out[25]: <type 'type'>
> 
> In [26]: A().__class__
> Out[26]: <type 'list'>
> 
> In [27]: isinstance(A(), list) # ouch !
> Out[27]: True
> 
> In [29]: type(A())
> Out[29]: <class '__main__.A'>
> 
> In [30]: type(A()).mro()
> Out[30]: [<class '__main__.A'>, <type 'object'>]
> 
> 
You are beginning to appreciate the meaning of the phrase "Python is a 
language for use by consenting adults". The general philosophy is to 
provide a coherent and easily-used framework in the expectation that 
users will not shoot themselves in the foot (too often).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From JohnRoth1 at jhrothjr.com  Tue Sep  5 22:50:27 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 5 Sep 2006 19:50:27 -0700
Subject: Unicode string handling problem
In-Reply-To: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
Message-ID: <1157511027.277425.266490@h48g2000cwc.googlegroups.com>


Richard Schulman wrote:
> The following program fragment works correctly with an ascii input
> file.
>
> But the file I actually want to process is Unicode (utf-16 encoding).
> The file must be Unicode rather than ASCII or Latin-1 because it
> contains mixed Chinese and English characters.
>
> When I run the program below I get an attribute_count of zero, which
> is incorrect for the input file, which should give a value of fifteen
> or sixteen. In other words, the count function isn't recognizing the
> ", characters in the line being read. Here's the program:
>
> in_file = open("c:\\pythonapps\\in-graf1.my","rU")
> try:
>     # Skip the first line; make the second available for processing
>     in_file.readline()
>     in_line = readline()
>     attribute_count = in_line.count('",')
>     print attribute_count
> finally:
>     in_file.close()
>
> Any suggestions?
>
> Richard Schulman
> (For email reply, delete the 'xx' characters)

You're not detecting the file encoding and then
using it in the open statement. If you know this is
utf-16le or utf-16be, you need to say so in the
open. If you don't, then you should read it into
a string, go through some autodetect logic, and
then decode it with the <string>.decode(encoding)
method.

A clue: a properly formatted utf-16 or utf-32
file MUST have a BOM as the first character.
That's mandated in the unicode standard. If
it doesn't have a BOM, then try ascii and
utf-8 in that order.  The first
one that succeeds is correct. If neither succeeds,
you're on your own in guessing the file encoding.

John Roth



From fuzzyman at gmail.com  Fri Sep 15 08:49:04 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 15 Sep 2006 05:49:04 -0700
Subject: Check if variable is an instance of a File object
In-Reply-To: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
Message-ID: <1158324544.827910.266160@k70g2000cwa.googlegroups.com>


sc_wizard29 at hotmail.com wrote:
> Hi everyone,
>
> Maybe these questions will sound strange to you, but I sometime have a
> hard time switching from Java to Python ;-)
>
> Let's say I have a function like this :
>
> def show_lines(file):
> 	for next_line in file:
> 		...
>
> What can I do to be sure that the input argument is indeed a 'File'
> object ?
>
> #1 : should I start by checking that 'file' is indeed an instance of a
> File object ? (and how do I do this ?)
> #2 : should I do nothing ? (but I don't like the idea of risking to
> have a runtime exception raised somewhere)
>

It depends how you want to do your exception handling. Assuming you
have passed in an object that isn't a file, how do you want to handle
it ?

Here is an example :

class ProgrammerError(Exception): pass

def function(myFile):
    if not isinstance(myFile, file):
        raise ProgrammerError
    for line in myFile:
        print myFile

try:
    function('something')
except ProgrammerError:
    print 'I did something wrong'

Writing tests that check your code doesn't do this would be a better
approach. This is 'strong testing' as opposed to 'strong typing'.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> Thanks for helping...



From claudio.grondi at freenet.de  Thu Sep  7 14:03:43 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 20:03:43 +0200
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <4matfsF5babeU1@uni-berlin.de>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<4matfsF5babeU1@uni-berlin.de>
Message-ID: <edpmts$1c$1@newsreader2.netcologne.de>

Diez B. Roggisch wrote:
> Francach schrieb:
> 
>> Hi,
>>
>> I'm trying to use the Beautiful Soup package to parse through the
>> "bookmarks.html" file which Firefox exports all your bookmarks into.
>> I've been struggling with the documentation trying to figure out how to
>> extract all the urls. Has anybody got a couple of longer examples using
>> Beautiful Soup I could play around with?
> 
> 
> Why do you use BeautifulSoup on that? It's generated content, and I 
> suppose it is well-formed, most probably even xml. So use a standard 
> parser here, better yet somthing like lxml/elementtree
> 
> Diez

Once upon a time I have written for my own purposes some code on this 
subject, so maybe it can be used as a starter (tested a bit, but 
consider its status as a kind of alpha release):

<code>
from urllib  import urlopen
from sgmllib import SGMLParser

class mySGMLParserClassProvidingListOf_HREFs(SGMLParser):
# provides only HREFs <a href="someURL"> for links to another pages skipping
# references to:
#   - internal links on same page :  "#..."
#   - email adresses              :  "mailto:..."
# and skipping part with appended internal link info, so that e.g.:
#   - "LinkSpec#internalLinkID" will be listed as "LinkSpec" only
# ---
   # reset() overwrites an empty function available in SGMLParser class
   def reset(self):
     SGMLParser.reset(self)
     self.A_HREFs = []
   #: def reset(self)

   # start_a() overwrites an empty function available in SGMLParser class
   # from which this class is derived.  start_a() will be called each 
time the
   # SGMLParser detects an <a ...> tag within the feed(ed) HTML document:
   def start_a(self, tagAttributes_asListOfNameValuePairs):
     for attrName, attrValue in tagAttributes_asListOfNameValuePairs:
       if attrName=='href':
         if attrValue[0] != '#' and attrValue[:7] !='mailto:':
           if attrValue.find('#') >= 0:
             attrValue = attrValue[:attrValue.find('#')]
           #: if
           self.A_HREFs.append(attrValue)
         #: if
       #: if
     #: for
   #: def start_a(self, attributes_NamesAndValues_AsListOfTuples)
#: class mySGMLParserClassProvidingListOf_HREFs(SGMLParser)
# 
------------------------------------------------------------------------------
# ---
# Execution block:
fileLikeObjFrom_urlopen = urlopen('www.google.com') # set URL
mySGMLParserClassObj_withListOfHREFs = 
mySGMLParserClassProvidingListOf_HREFs()
mySGMLParserClassObj_withListOfHREFs.feed(fileLikeObjFrom_urlopen.read())
mySGMLParserClassObj_withListOfHREFs.close()
fileLikeObjFrom_urlopen.close()

for href in mySGMLParserClassObj_withListOfHREFs.A_HREFs:
   print href
#: for
</code>

Claudio Grondi


From dbraden at invalid.add  Wed Sep 13 11:33:01 2006
From: dbraden at invalid.add (David J. Braden)
Date: Wed, 13 Sep 2006 15:33:01 GMT
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <mailman.20.1158149440.10491.python-list@python.org>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>
	<mailman.20.1158149440.10491.python-list@python.org>
Message-ID: <NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>

Jason Tishler wrote:
> Dave,
> 
> On Wed, Sep 13, 2006 at 09:42:48AM +0000, David J. Braden wrote:
>> Thorsten Kampe wrote:
>>> * David J. Braden (2006-09-12 18:35 +0100)
>>>> I can run Python in command-line mode fine from the cygwin shell;
>>>> the cygwin distribution also includes IDLE, which is apparently
>>>> completely installed, yet I am unable to get IDLE running. When I
>>>> double-click idle.bat (or idle.pyw) I am prompted to locate the
>>>> program's creator.  Darn if I know what it is. If I try to invoke
>>>> IDLE from cygwen bash, I get "unable to remap
>>>> c:\cygwin\bin\tk84.dll to same address as parent".
>>> rebaseall
>>>  
>> [snip]
>>
>> Thanks, Thorsten. I assume you mean type in "idle rebaseall" (?) -
>> seems to bring up a window for a split second, then come back with
>> same error messages I had before. I cannot find in the IDLE doc any
>> reference on how to get it going under cygwin; could you please point
>> me towards a less-than-terse set of instructions?
> 
> Here's another terse response:
> 
>     http://www.google.com/search?hl=en&q=unable+remap+same+address+parent&btnG=Google+Search
> 
> :,)
> 
> The following are excerpts from the rebase README:
> 
>     The rebaseall utility is a convenient way for users that suffer from
>     the Cygwin rebase problem to rebase their entire system (i.e., all
>     of their DLLs).  The following is a list of known Cygwin
>     applications that are affected by the rebase problem:
> 
>         Apache
>         Perl
>         Python
> 
>     The rebase problem is due to fork() failing when it is unable to
>     load DLLs in the child at the same address as in the parent.  This
>     is caused by DLLs which have conflicting base addresses.  An error
>     message like the following will be displayed when the problem is
>     triggered:
> 
>         C:\cygwin\bin\python.exe: *** unable to remap C:\cygwin\bin\cygssl.dll
>         to same address as parent(0xDF0000) != 0xE00000
> 
>     Use the following procedure to rebase your entire system:
> 
>         1. shutdown all Cygwin processes and services
>         2. start ash (do not use bash or rxvt)
>         3. execute /bin/rebaseall (in the ash window)
> 
> BTW, idle has problems running under Cygwin Python:
> 
>     http://sf.net/tracker/?func=detail&atid=105470&aid=786827&group_id=5470
> 
> Jason
> 

Thanks, Jason. Your first cite cracked me up. I can now confirm that, 
yes, IDLE pops up w/o menus under cygwin. Sheesh. Onward...

Regards,
DaveB


From matt at tplus1.com  Wed Sep 13 11:02:57 2006
From: matt at tplus1.com (Matthew Wilson)
Date: Wed, 13 Sep 2006 15:02:57 GMT
Subject: eval(repr(object)) hardly ever works
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
	<mailman.29.1158158438.10491.python-list@python.org>
Message-ID: <slrnegg7d1.k84.matt@mwilson.umlcoop.net>

On Wed 13 Sep 2006 10:38:03 AM EDT, Steve Holden wrote:
> That's intentional. Would you have it return the code of all the methods 
> when you take the repr() of a class?

I don't think that would be required.  Couldn't you return a string with
a call to the constructor inside?  That's what sets.Set seems to do:

In [510]: from sets import Set

In [511]: s = Set()

In [512]: s.add('baloney')

In [513]: repr(s)
Out[513]: "Set(['baloney'])"

In [514]: eval(repr(s))
Out[514]: Set(['baloney'])

> regards
>   Steve

PS: I read your python web programming book a few years ago.



-- 
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles


From carsten at uniqsys.com  Sat Sep 23 16:01:30 2006
From: carsten at uniqsys.com (Carsten Haese)
Date: Sat, 23 Sep 2006 16:01:30 -0400
Subject: Need compile python code
In-Reply-To: <1159039498.616908.88550@d34g2000cwd.googlegroups.com>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
	<1159039498.616908.88550@d34g2000cwd.googlegroups.com>
Message-ID: <20060923195657.M4391@uniqsys.com>

On 23 Sep 2006 12:24:58 -0700, mistral wrote
> No, something is wrong there. what I need is just compile one python
> file which will generate html page, with parameters:
> "exec" "python" "-O" "$0" "$@"

This is not a python script. It appears to be a Unix shell script that calls a
python script.

Maybe it would help if you told us exactly what you're trying to accomplish
and why you think you need to "compile python code".

-Carsten



From rtw at freenet.co.uk  Wed Sep 27 19:32:55 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Wed, 27 Sep 2006 18:32:55 -0500
Subject: Difference between two dates in seconds
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
	<mailman.822.1159381205.10491.python-list@python.org>
	<pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
Message-ID: <Xns984C5ADA4978rtwfreenetREMOVEcouk@216.196.109.145>

Steven D'Aprano wrote in
news:pan.2006.09.27.23.20.59.226695 at REMOVE.THIS.cybersource.com.au in
comp.lang.python: 

> On Wed, 27 Sep 2006 20:16:52 +0200, Fredrik Lundh wrote:
> 
>> Claes at work wrote:
>> 
>>> Please tell me there is a simpler way than subtracting two datetimes
>>> to get a timedelta and then compute
>>> 
>>> days * number of seconds per day + seconds
>>> 
>>> from it myself??
>> 
>> why would you have to do that yourself?  why not let Python do it for
>> you?  here's the code:
>> 
>>     seconds = td.days * 86400 + td.seconds
> 
> I'm sure somebody as experienced as Fredrik doesn't need to be told
> why peppering code with magic constants like 84600 are a less than
> ideal solution -- and for those who do need to be told, carefully
> compare what I wrote to what Fredrik wrote to see one of those
> reasons. 

What you wrote, where ?

> 
> Arguably a better solution would be to do this:
> 
> seconds = td.days * 24*60*60 + td.seconds
> 
> Still not ideal though, although that depends on just how often you
> need to convert days to or from seconds.
> 
> 



Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From skip at pobox.com  Tue Sep 26 17:07:30 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 26 Sep 2006 16:07:30 -0500
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
Message-ID: <17689.38546.155710.660320@montanaro.dyndns.org>


    metaperl> I'm wondering if anyone has ever found a practical use for the
    metaperl> else branch?

Yeah, I use it from time to time:

    for foo in bar:
        if foo matches some condition:
            print "sail to tahiti!"
            break
    else:
        print "abandon ship!"
        
Skip


From lycka at carmen.se  Fri Sep 29 08:20:18 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Fri, 29 Sep 2006 14:20:18 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfmg5.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef5ncc$uus$1@news.albasani.net>
	<mailman.524.1159095305.10491.python-list@python.org>
	<ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
	<slrnehfmg5.6tm.jon+usenet@snowy.squish.net>
Message-ID: <efj322$h18$1@wake.carmen.se>

Jon Ribbens wrote:
> In article <mailman.559.1159188171.10491.python-list at python.org>, Fredrik Lundh wrote:
>> maybe you haven't done software long enough to understand that
>> software works better if you use it the way it was intended to be
>> used, but that's no excuse for being stupid.
> 
> So what's your excuse?

If you don't like Fredrik's manner I suggest that you simply
don't use any code he's written. Good luck using Python! :^)


Don't bite the hand that feeds you...


From deets at nospam.web.de  Thu Sep 14 08:47:15 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 14 Sep 2006 14:47:15 +0200
Subject: Outbound port on sockets
In-Reply-To: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
Message-ID: <4mt1ajF7gs0hU1@uni-berlin.de>

bmearns schrieb:
> Is it possible to specify which port to use as the outbound port on a
> connection? I have the IP address and port number for the computer I'm
> trying to connect to (not listening for), but it's expecting my
> connection on a certain port.
> 
> Specifically, I'm trying to write an FTP host, and I'm trying to
> implement the PORT command. From everything I've read, the client
> supplies the IP address and port number for where I'm supposed to
> connect to send it data (like a LISTing), and it's expecting me to
> connect over port 20. If anyone is familiar with FTP and can tell me
> whether this is true or not, whether I really need to go out on port
> 20, I'd appreciate it, as well.

AFAIK you neither can't do that nor need it. The PORT commands purpose 
is to tell where the server can connect to - but the client makes no 
assumptions over the source port of that connection. Let alone NAT and 
other things could come into your way.

If firewalls are a problem, use PASV.

Diez


From george.sakkis at gmail.com  Sun Sep 10 15:10:28 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 10 Sep 2006 12:10:28 -0700
Subject: Refactoring Dilemma
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
Message-ID: <1157915428.352721.163680@e3g2000cwe.googlegroups.com>

Kamilche wrote:
> '''
> I'm in the middle of a refactoring dilemma.
> I have several singletons that I'm turning into modules, for ease of
> access.
> The usual method is noted as 'Module 1' below.
> The new method is noted as 'Module 2'.
> Is there any reason NOT to do this that I may be unaware of?
> It's easier than remembering to declare global variables at the top of
> the function.
> '''
>
> # ----------- Module 1.py ------------
> # Normal module processing
> var = 0
>
> def MyRoutine():
>     global var
>     var = 1
>
> MyRoutine()
> print var
>
>
> # ----------- Module 2.py ------------
> # 'Self' module processing
> import sys
> var = 0
> self = sys.modules[__name__]
>
> def MyRoutine():
>     self.var = 1
>
> MyRoutine()
> print var


What's wrong with
<code>
def MyRoutine():
     return 1

var = MyRoutine()
</code>
?

George



From jeremy+complangpython at jeremysanders.net  Thu Sep 28 06:38:00 2006
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Thu, 28 Sep 2006 11:38:00 +0100
Subject: Writing 2d array in an ascci file
References: <1159438691.950658.266940@m73g2000cwd.googlegroups.com>
Message-ID: <efg8m8$qf1$1@gemini.csx.cam.ac.uk>

charles.hebert at gmail.com wrote:

> I want to write an 2d array in an ascii file using numpy. There's the -
> tofile / fromfile - function but it doesn't work with nd array.

Is this good enough?

x = numpy.zeros( (10, 10) )
f = open('out.txt', 'w')
print >>f, str(x).replace('[',' ').replace(']', ' ')
f.close()


Jeremy

-- 
Jeremy Sanders
http://www.jeremysanders.net/


From paul at boddie.org.uk  Sat Sep  9 06:53:55 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 9 Sep 2006 03:53:55 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157775244.717666.184850@i42g2000cwa.googlegroups.com>
Message-ID: <1157799235.073144.273270@h48g2000cwc.googlegroups.com>

Kay Schluehr wrote:
>

[Quoting Marc 'BlackJack' Rintsch...]

> > If you are so fond of static typing, why are you using Python in the first
> > place?  Just see it as consistency -- dynamically typed language ?
> > dynamically typed DB columns.  ;-)
>
> I have to admit I find this bogus too. It has by no means anything to
> do with static typing but letting "errors pass silently" i.e.
> deactivating runtime type checks as well.

If the questioner had been talking about Perl, most respondents would
rightly have said that Perl's silent coercion or conversion of values
is an irritating source of potential errors. Here, the behaviour of
SQLite, whilst not as bad as Perl - values are not converted into
something different which is then erroneous - does contradict the naive
expectations of users who expect the data type declarations to mean
something and for such constraints to be enforced.

Of course, the criticism of the questioner should be more forgiving in
this debate, since I imagine that most people with experience of SQLite
know of its "loose" data typing model, and that many assume that
everyone else is aware of this feature or limitation, even though that
may not be the case. Thus, the priority should be on emphasizing this
in the module documentation (in order to avoid unnecessary confusion),
along with mentioning other possible strategies for emulating other
database system behaviours: "Other Affinity Modes" in the SQLite
documentation [1] may be helpful here, if the future tense can be
replaced with the present tense whilst preserving the factual content
of that section.

Paul

[1] http://www.sqlite.org/datatype3.html



From danielmarkhot at gmail.com  Fri Sep 15 17:58:36 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 15 Sep 2006 14:58:36 -0700
Subject: How to change font direction?
Message-ID: <1158357516.297252.282020@i42g2000cwa.googlegroups.com>

Hello all:

I am using PIL to draw some graphics and I need to draw some texts
in vertical direction rather than the default left-to-right horizontal
direction.

Is there anyway I could do that?


Thank you
-Daniel



From rcs at bgoark.no  Tue Sep 26 19:51:43 2006
From: rcs at bgoark.no (baalbek)
Date: Wed, 27 Sep 2006 01:51:43 +0200
Subject: Survival of the fittest
Message-ID: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>

I first heard of Python (on a CD cover) back in 1995. I thought, "what 
is this? Python? Forget about it!"

Back then, I was a huge fan of the Delphi (Object Pascal) language, and 
had immense respect for the C/C++ family.

1997 I got seriously into C++ programming, and thought, "could anything 
be cooler than this? Nope!"

I was a late Java starter, but once the fad caught on, Java it was, and 
Java it should be! Java would be forever!

Passing through various other languages, Python reappears in 2000. I 
even don't remember in what context, but I started to use Python for 
serious work in 2001.

Now, six years later, I use Python for about 70-80% of all my work (the 
remainder being Ruby and C/C++).

I'm now having the policy: "If it's doable in Python, I'll use Python".

This unassuming scripting language has beaten heavy-weights like Java, 
C++, etc, and this without any serious marketing machine behind it.

Why? The language is just so well designed (I miss some of Ruby's 
features, but then, nothing is perfect), robust, stable, and with a 
humongous amount of libraries, and runs without any modification on all 
OS platforms I use.

Just a Python admirer's rant on this beautiful autumn afternoon!

(I do like girls also! But everything in it's due time.)

Baalbek


From gagsl-py at yahoo.com.ar  Thu Sep 21 03:27:03 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 04:27:03 -0300
Subject: view page source or save after load
In-Reply-To: <1158816399.831104.148250@b28g2000cwb.googlegroups.com>
References: <mailman.373.1158814163.10491.python-list@python.org>
	<1158816399.831104.148250@b28g2000cwb.googlegroups.com>
Message-ID: <7.0.1.0.0.20060921041414.05856cc0@yahoo.com.ar>

At Thursday 21/9/2006 02:26, alex23 wrote:

>page = urllib.urlopen('http://some.address')

add .read() at the end

>open('saved_page.txt','w').write(page).close()

write() does not return the file object, so this won't work; you have 
to bind the file to a temporary variable to be able to close it.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From caseyhHAMMER_TIME at istar.ca  Mon Sep 11 00:14:37 2006
From: caseyhHAMMER_TIME at istar.ca (Casey Hawthorne)
Date: Mon, 11 Sep 2006 04:14:37 GMT
Subject: PyPy with a smaller PVM for the full Python?
Message-ID: <t5o9g2t5n39inanhl43d1pbnphvpsvfg7a@4ax.com>

Currently PyPy is working toward compiling to C a restricted subset of
Python, called RPython.

Would it be possible for PyPy to "compile" the full subset of Python
by also using a lot smaller version of the PVM (Python Virtual
Machine) to go with the "compiled" code?
So, the user would be running the C object code and also a smaller
PVM!

Or would this completely remove or severely reduce any speed advantage
of the compiled code?


Similarly, for JPython (which is at Python 2.2?), could one also use a
lot smaller accompanying PVM with the JPython source code and JVM to
use Python 2.5 in its entirety?

--
Regards,
Casey


From gnewsg at gmail.com  Thu Sep 14 08:58:07 2006
From: gnewsg at gmail.com (billie)
Date: 14 Sep 2006 05:58:07 -0700
Subject: Outbound port on sockets
In-Reply-To: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
Message-ID: <1158238687.403115.250480@m73g2000cwd.googlegroups.com>


bmearns wrote

> Is it possible to specify which port to use as the outbound port on a
> connection? I have the IP address and port number for the computer I'm
> trying to connect to (not listening for), but it's expecting my
> connection on a certain port.
>
> Specifically, I'm trying to write an FTP host, and I'm trying to
> implement the PORT command. From everything I've read, the client
> supplies the IP address and port number for where I'm supposed to
> connect to send it data (like a LISTing), and it's expecting me to
> connect over port 20. If anyone is familiar with FTP and can tell me
> whether this is true or not, whether I really need to go out on port
> 20, I'd appreciate it, as well.
>
> Thanks.

This isn't correct.
If you send a PORT command you're telling server to establish a
connection with you, not the contrary. In this case, even if you are an
FTP client, you temporary ACCEPT an outbound connection from the FTP
server.
The right format of a FTP PORT command is:

PORT x,x,x,x,y,z

...where x(s) represents your IP address in dotted form and (x * y) the
TCP port you bind.
For further informations you can check RFC959 or take a look at ftplib
in standard module library. Also in twisted you can find a lot of
useful code in the module protocols.ftp.



From amk at amk.ca  Tue Sep 12 15:03:18 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Tue, 12 Sep 2006 14:03:18 -0500
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
Message-ID: <5sidnY0_IITrmZrYnZ2dnUVZ_oqdnZ2d@speakeasy.net>

On 12 Sep 2006 10:24:00 -0700, 
	mensanator at aol.com <mensanator at aol.com> wrote:
> So, knowing that, would you agree that
> 
><quote Python Library Reference 13.13>
> If switching to a larger database such as PostgreSQL or Oracle
> is later necessary, the switch should be relatively easy.
></quote>
> 
> is misleading if not outright untruthful?

As the original author of that sentence, I don't think it's either
misleading or untruthful; 'relatively easy' gives me wiggle room. 
However, to fix your complaint, I've changed the paragraph to read:

	SQLite is a C library that provides a lightweight disk-based
	database that doesn't require a separate server process and allows
	accessing the database using a nonstandard variant of the SQL query
	language. Some applications can use SQLite for internal data
	storage. It's also possible to prototype an application using SQLite
	and then port the code to a larger database such as PostgreSQL or
	Oracle.

Of course, if you accept Fredrik's reading of the SQL standard, the
word 'nonstandard' in the revised text is incorrect; SQLite is
compliant with the standard but in an unusual way.  (But most readers
will interpret "nonstandard" as meaning "not like most other SQL
databases", so I'll let it stand.)

--amk


From larry.bates at websafe.com  Fri Sep  1 18:05:29 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 01 Sep 2006 17:05:29 -0500
Subject: Python for Windows
In-Reply-To: <1157016599.190393.324140@m79g2000cwm.googlegroups.com>
References: <1156889674.296093.5390@74g2000cwt.googlegroups.com>
	<12fb95ba4q18i53@corp.supernews.com>
	<FNhJg.121908$LF4.61023@dukeread05>
	<1156954258.821092.112660@p79g2000cwp.googlegroups.com>
	<44F617B1.5000805@websafe.com>
	<1157016599.190393.324140@m79g2000cwm.googlegroups.com>
Message-ID: <44F8AEA9.4080804@websafe.com>

mistral wrote:
> Larry Bates ?????(?):
> 
>> mistral wrote:
>>> hg ?????(?):
> 
>>>> Grant Edwards wrote:
> 
>>>>>> Will the msi installer modify registry or other system files?
>>>>>> Does it possible install Python not touching registry and
>>>>>> system files?
>>>> You can make your own installer to install Python, and make sure the
>>>> registry is not touched - I think the current installer modifies at
>>>> least the .py .pyw file association.
> 
>>>> hg
>>> --------------------
>>> not sure how to make custom installer to install Python on windows. Is
>>> there some ready one?
>>> If msi installer modify just pair of keys, and not touch system files,
>>> then OK. Have it uninstaller also?
> 
>>> mistral
>  ----------------------------------------------
>> If you really want to install Python on Windows, I would recommend that
>> you get ActiveState Python, it comes as .MSI installer and has
>> uninstaller.
> 
>> http://www.activestate.com/Products/ActivePython/
> 
>> It does minimal registry changes and I know of no system file changes
>> (but I could be wrong).  If you want to put a program written in python
>> on a workstation you don't have to put python on it.  Use py2exe to
>> package it and create an installer with Inno Setup.
> 
>> -Larry
> 
> 
> ok, I just want run Python file, which will generate html file.
> 
> mistral
> 
py2exe removes the need to install python on a computer.  It packages
up your program in a way so that it can be installed as basically a
stand-alone application.  It will include the pythonxx.dll that is
needed, but not all the other support functions.  Add Inno Setup
to bundle the py2exe files that are needed and you get a single
setup.exe file that can be run to install your application on the
computer WITHOUT installing python at all.

-Larry Bates


From steve at holdenweb.com  Thu Sep 28 15:51:07 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 20:51:07 +0100
Subject: License / Registration key enabled software
In-Reply-To: <slrnehnuut.bmu.sybrenUSE@schuimige.stuvel.eu>
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>	<mailman.847.1159402807.10491.python-list@python.org>	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>	<slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>	<mailman.892.1159459686.10491.python-list@python.org>
	<slrnehnuut.bmu.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efh91o$9kj$1@sea.gmane.org>

Sybren Stuvel wrote:
> Steve Holden enlightened us with:
> 
>>And you guarantee that the contents of the smartcard is only used by
>>one user at a time by building a licensing system for the
>>smartcards?
> 
> 
> We can never, ever make a 100% guarantee that people won't copy what
> you supply them. The only way to do that is to thoroughly monitor them
> 24/7, violating every privacy law in existance.
> 
Excellent. So you don't trust them not to abuse the software, but you 
trust them not to abuse the smartcards. What's wrong with this picture?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ajones1 at gmail.com  Wed Sep 20 11:08:01 2006
From: ajones1 at gmail.com (Adam Jones)
Date: 20 Sep 2006 08:08:01 -0700
Subject: How to get a Fix to an Abandoned Project?
In-Reply-To: <mailman.310.1158728779.10491.python-list@python.org>
References: <mailman.296.1158699367.10491.python-list@python.org>
	<1hlxp3x.1dtd1eug5y80N%rhymes@myself.com>
	<312cfe2b0609192121w436e649ayf3ce10fec066367c@mail.gmail.com>
	<mailman.310.1158728779.10491.python-list@python.org>
Message-ID: <1158764881.159403.282370@b28g2000cwb.googlegroups.com>


Gregory Pi?ero wrote:
> Say hello to pydelicious's new home ;-)
> http://code.google.com/p/pydelicious/
>
> -Greg

Unless you are the original project's maintainer or have their consent
on this it is usually bad form to name your fork the same thing as the
original project. Granted, for something that has withered and died
this may not be much of an issue, but it is good to know for future
reference.

-Adam



From sjdevnull at yahoo.com  Fri Sep 29 03:27:18 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 29 Sep 2006 00:27:18 -0700
Subject: wxPython and threading issue
In-Reply-To: <an0Tg.125766$sS1.18589@read1.cgocable.net>
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
	<1159499923.311082.63610@h48g2000cwc.googlegroups.com>
	<an0Tg.125766$sS1.18589@read1.cgocable.net>
Message-ID: <1159514838.443661.228420@i42g2000cwa.googlegroups.com>

Patrick Smith wrote:
> Hi,
> Thanks for your reply.
>
> <sjdevnull at yahoo.com> wrote in message
> news:1159499923.311082.63610 at h48g2000cwc.googlegroups.com...
> > [Re: cancelling a worker thread from the GUI thread]
> >
> > Have the main thread set a flag telling the worker thread to exit, and
> > have the worker thread check that periodically when it knows it's in a
> > safe state to exit.
> >
>
> This would work, unfortunately, the thread that it spawns calls a function
> in a loop, that function has an incredibly long run-time, on the order of
> minutes (possibly hours depending on the input), and that function, its self
> is multithreaded.
> This means that the worker thread could only check the flag after each
> completion of this long-running function.
>
> Given that this is the situation, is it possible to do what I mentioned
> above?  Or does the long running function prevent any nice way of doing
> this?

Well, the problem is that you can't simply kill a thread--it shares
memory with other threads that it could be leaving in an inconsistent
state.  Imagine that it was, say, holding a lock when it was forceably
killed.  Now any other thread that tries to acquire that lock will
block forever.

You really do need the thread's cooperation so that it only exits when
everything is in a kosher state.  Can you dig into the incredibly long
function and change it to do the flag-checking and exiting safely?

I second the notion to consider using subprocesses instead of threads;
that's almost always a good idea unless you're really sharing a lot of
complex data structures.



From martin at v.loewis.de  Sat Sep 23 02:13:32 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 23 Sep 2006 08:13:32 +0200
Subject: Python 2.5 Installation and Tkinter
In-Reply-To: <1158966487.752158.90870@m7g2000cwm.googlegroups.com>
References: <1158958988.315609.242040@h48g2000cwc.googlegroups.com>
	<1158966487.752158.90870@m7g2000cwm.googlegroups.com>
Message-ID: <4514d08d$0$31765$9b622d9e@news.freenet.de>

milan_sanremo schrieb:
> cc -shared
> build/temp.solaris-2.10-i86pc-2.5/tmp/Python-2.5/Modules/_tkinter.o
> build/temp.solaris-2.10-i86pc-2.5/tmp/Python-2.5/Modules/tkappinit.o
> -L/usr/openwin/lib -L/usr/local/lib -ltk8.5 -ltcl8.5 -lX11 -o
> build/lib.solaris-2.10-i86pc-2.5/_tkinter.so
> 
> Yet, the file exists in /usr/local/lib.  What am I missing?

The system doesn't look in /usr/local/lib when searching for shared
libraries. You have the usual options:

1. Set LD_RUN_PATH at build time to include /usr/local/lib
2. Set LD_LIBRARY_PATH at run time to include /usr/local/lib
3. Use crle to add /usr/local/lib to the system wide search path

Even though it is quite intrusive, I typically prefer to do 3.
That way, I don't have to hard-code library paths into executables,
don't need my users to set environment variables, and have most
autoconf-based software work out of the box.

If you have never used crle before, understand that great care
is necessary in using it. See the EXAMPLES in crle(8). You can
either use -u -l to add a directory at the end of the search
path, or just -l to overwrite the search path; make sure the
original search path is still included.

Regards,
Martin


From afaNOSPAM at neuf.fr  Tue Sep 26 17:15:27 2006
From: afaNOSPAM at neuf.fr (Amaury Forgeot d'Arc)
Date: Tue, 26 Sep 2006 23:15:27 +0200
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
Message-ID: <efc590$2h08$1@talisker.lacave.net>

metaperl.etc at gmail.com a ?crit :
> A very old thread:
> http://groups.google.com/group/comp.lang.python/browse_frm/thread/2c5022e2b7f05525/1542d2041257c47e?lnk=gst&q=for+else&rnum=9#1542d2041257c47e
> 
> discusses the optional "else:" clause of the for statement.
> 
> I'm wondering if anyone has ever found a practical use for the else
> branch?
> 

I use it regularly in contructs like:

     for value in someList:
         if someCondition(value):
             print "a matching item was found"
             break
     else:
         print "no matching item"
         return False

     # ... continue with value

-- 
Amaury


From robert.kern at gmail.com  Wed Sep  6 11:37:32 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 06 Sep 2006 10:37:32 -0500
Subject: sci-py error
In-Reply-To: <Pine.LNX.4.58.0609061234400.8651@gluon.particle.kth.se>
References: <Pine.LNX.4.58.0609061234400.8651@gluon.particle.kth.se>
Message-ID: <edmpvs$1kr$1@sea.gmane.org>

Cecilia Marini Bettolo wrote:
> Hi!
> When installing scipy I get this error:
> 
> python setup.py install
> Traceback (most recent call last):
>   File "setup.py", line 55, in ?
>     setup_package()
>   File "setup.py", line 28, in setup_package
>     from numpy.distutils.core import setup
>   File "/usr/local/lib/python2.4/site-packages/numpy/__init__.py", line 
> 40, in ?
>     import linalg
>   File "/usr/local/lib/python2.4/site-packages/numpy/linalg/__init__.py", 
> line 4, in ?
>     from linalg import *
>   File "/usr/local/lib/python2.4/site-packages/numpy/linalg/linalg.py", 
> line 25, in ?
>     from numpy.linalg import lapack_lite
> ImportError: /usr/lib/libblas.so.3: undefined symbol: e_wsfe

Your numpy package was built incorrectly. e_wsfe is a symbol that should be 
provided by libg2c, the FORTRAN runtime for g77.

   http://www.scipy.org/FAQ#head-26562f0a9e046b53eae17de300fc06408f9c91a8

Please ask again on the numpy mailing list and provide some more information, 
like your platform, the versions of your compilers, and some more details about 
how you went about building numpy and any errors or warnings you got.

   http://www.scipy.org/Mailing_Lists

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From tim.golden at viacom-outdoor.co.uk  Thu Sep  7 12:01:47 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 7 Sep 2006 17:01:47 +0100
Subject: mac address
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B423@vogbs009.gb.vo.local>

| Is it possible to get the mac address of a device 
| with python 2.4 using code which works in wxp and linux 
| rather than requiring some code for windows and some
| other code for linux ?

I'm fairly sure the answer's no. It wouldn't be beyond
the wit of man to produce a library with conditional
imports or checks against the sys.platform etc. which
did sensible things. If you Google the archives for this
group you'll see similar questions a few times in the
past, so maybe there are some starting points for you
there. (On Win32 I'd use WMI, but that's just because...)

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From joakim.hove at gmail.com  Wed Sep 20 02:00:20 2006
From: joakim.hove at gmail.com (joakim.hove at gmail.com)
Date: 19 Sep 2006 23:00:20 -0700
Subject: include statement
Message-ID: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>

Hello,

is it possible in python to include another python source file into the
current namespace, i.e.completely analogous to the #include statement
in C.

Regards Joakim



From rxrx at yamama.com  Thu Sep  7 21:59:46 2006
From: rxrx at yamama.com (Butternut Squash)
Date: Fri, 08 Sep 2006 01:59:46 GMT
Subject: Best Middle Tier Architechure?
Message-ID: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>

What do you guys recommend for doing middle tier in python.
I want to hide the database from the application and have it just use
business logic.

right now we are using c# and .net remoting in a way that just is not
efficient.

I want to rewrite a lot of what we do in python. I have seen XML-RPC and
soap.  Are there other options?

Just curious for some opinions.

Thanks.


From syscjm at sumire.eng.sun.com  Thu Sep 28 11:17:33 2006
From: syscjm at sumire.eng.sun.com (Chris Mattern)
Date: Thu, 28 Sep 2006 15:17:33 -0000
Subject: Battlefield Weapon Popularity Trend
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
	<12hlc1hf2amom31@corp.supernews.com>
	<efeko0$bqg$1@mlucom4.urz.uni-halle.de>
Message-ID: <12hnpsdlt89qmd0@corp.supernews.com>

In article <efeko0$bqg$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:
>Thus spoke Chris Mattern (on 2006-09-27 19:09):
>> In article <efd9g0$sn5$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:
>>>
>>>When the Samurai of medieval Japan were confronted
>>>with new 'battlefield language', e.g. early Shotguns,
>> 
>> "early Shotguns" :D.  Your mastery of the history of
>> firearms overwhelms me.
>
>You want a fight? With a muzzle-loaded gun?
>Three shots for everybody -- 5 minutes time?
>
>BTW: (http://en.wikipedia.org/wiki/Musket)
>    The date of the origin of muskets remains
>    unknown, but they are mentioned as early as
>    the late 15th century, and they were primarily
>    designed for use by infantry. Muskets became
>    obsolete by the middle of the 19th century,
>    as rifles superseded them.
>

Muskets are not shotguns.

-- 
             Christopher Mattern

"Which one you figure tracked us?"
"The ugly one, sir."
"...Could you be more specific?"


From blair.houghton at gmail.com  Tue Sep  5 23:42:44 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 5 Sep 2006 20:42:44 -0700
Subject: EVIDENCE: 911 was CONTROLLED DEMOLITION to make muslims 2nd class
In-Reply-To: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>
References: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>
Message-ID: <1157514164.187215.57890@i42g2000cwa.googlegroups.com>


>thermate

So the guy found burned aluminum on iron.

That doesn't mean there were military-grade incendiary devices anywhere
near the WTC.

You idiot.

--Blair



From kondal04 at gmail.com  Thu Sep  7 00:53:22 2006
From: kondal04 at gmail.com (kondal)
Date: 6 Sep 2006 21:53:22 -0700
Subject: 22, invalid agument error
In-Reply-To: <1157593501.762579.135500@m73g2000cwd.googlegroups.com>
References: <1157563063.063705.317970@m73g2000cwd.googlegroups.com>
	<1157593501.762579.135500@m73g2000cwd.googlegroups.com>
Message-ID: <1157604802.077435.256750@i42g2000cwa.googlegroups.com>

> >   sockobj.bind(('',40007))
>
> tried on my N6600 with same error
>
> try using your phone's IP instead of the empty string ''
>
> tried sockobj.bind(('127.0.0.1',40007)) and did not get an error

In general sockets layer bind with null host makes it pick the address
from arp resolution and null in port makes it pick a random number as a
source port. This is reason bind call is not required for client
connections.

I think Python for S60 has some problem in sockets layer for the bind
function. Best is to remove the bind call in the client program as
people will test with this senario in general.



From deets at nospam.web.de  Thu Sep  7 10:50:42 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 07 Sep 2006 16:50:42 +0200
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <1157639580.217361.273200@i42g2000cwa.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
Message-ID: <4mapu3F59idnU1@uni-berlin.de>

Omar schrieb:
> thanks.
> 
> i have saved and double clicked as suggested.  when I save and double
> click a simple "hello program", the b&w python shell briefly comes up,
> then disappears. is this how it should work?

Yes. because when your program terminates, the shell terminates. Or 
would you prefer it sticking around, cluttering screen space?

If you want it to stay,  make your program require a key-press in the 
end. something like this:

raw_input("press return")


Diez




From robert.kern at gmail.com  Fri Sep 22 17:52:46 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 22 Sep 2006 16:52:46 -0500
Subject: no-installation version of python
In-Reply-To: <4niv8hFan2s7U1@individual.net>
References: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
	<4niv8hFan2s7U1@individual.net>
Message-ID: <ef1lva$oe8$1@sea.gmane.org>

Bjoern Schliessmann wrote:
> mr.porteiro.head at gmail.com wrote:
> 
>> Is there a stand-alone version of python out there that I can
>> package with my scripts so that I don't have to bother with
>> something like py2exe?
> 
> Isn't this the exact intention of py2exe?

I think he wants a no-install (or, perhaps more accurately, 
simply-unzip-to-install) version of the interpreter that doesn't need to touch 
the Windows registry or copy DLLs to system locations. py2exe builds such a 
thing (or nearly so) for the application itself, if it works. However, since 
py2exe is somewhat fiddly, something like Movable Python might give him most of 
the benefits with less effort.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From rshepard at appl-ecosys.com  Wed Sep 13 12:49:35 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Wed, 13 Sep 2006 09:49:35 -0700 (PDT)
Subject: PyCrust Question
Message-ID: <Pine.LNX.4.64.0609130948110.27444@salmo.appl-ecosys.com>

   To test my code interactively I decided to try PyCrust. However, all the
File menu items except Save and Quit are greyed out so I cannot open a saved
file. Is there a simple explanation I've overlooked?

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From testasdf at sdf.com  Tue Sep 12 16:25:28 2006
From: testasdf at sdf.com (Kim Bendtsen)
Date: Tue, 12 Sep 2006 22:25:28 +0200
Subject: Marshaled input / output from Perforce server
Message-ID: <pan.2006.09.12.20.25.28.183828@sdf.com>

I'm trying to write a script in python that communicates with a perforce
server. I can get the output from perforce by using -G and the popen
command.

I have a problem when I'm trying to send a request to the server using
marshaled input. I cannot find a single example anywhere on the net
describing it. I would very much appreciate if anyone could provide a
simple example, or a secret link or smth. 

And if there is any documentation on the specific API that is availble
when using the marshaled input, could you please provide give a link. 

Thx in advance. 

Kim B. 




From richie at entrian.com  Fri Sep  1 07:05:37 2006
From: richie at entrian.com (Richie Hindle)
Date: Fri, 01 Sep 2006 12:05:37 +0100
Subject: Django website
In-Reply-To: <44F81103.2040901@mimoza.pantel.net>
References: <44F81103.2040901@mimoza.pantel.net>
Message-ID: <tr4gf2lvp66rt01qironrc6kb8qtv2t387@4ax.com>


[Antal]
> is there something wrong with django's website (djangoproject.com)
> or I have problems?
> It looks ugly, the css files can't be found, I even cannot download
> the source from there.

It's broken for me too, so it's not a problem at your end.

-- 
Richie Hindle
richie at entrian.com


From tim at tdw.net  Mon Sep 11 10:33:58 2006
From: tim at tdw.net (Tim Williams)
Date: Mon, 11 Sep 2006 15:33:58 +0100
Subject: extracting substrings from a file
In-Reply-To: <B52076095.803.13233.1@mx-extra>
References: <B52076095.803.13233.1@mx-extra>
Message-ID: <9afea2ac0609110733ta7a8658x45a1ed65c090fcc5@mail.gmail.com>

On 11 Sep 2006 05:29:17 -0700, sofiafig at gmail.com <sofiafig at gmail.com> wrote:
> Hi,
>
> I have a file with several entries in the form:
>
> AFFX-BioB-5_at   E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
> corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
> 7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
> 7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
> dethiobiotin synthetase (bioD), complete cds.
>
> 1415785_a_at     /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
> /CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
> /DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
> /PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1
>
> and I would like to create a file that has only the following:
>
> AFFX-BioB-5_at  /GEN=bioB  /gb:J04423.1
>
> 1415785_a_at     /gb:NM_009840.1 /GEN=Cct8
>
> Could anyone please tell me how can I do it?

If each entry is a single line, then the following is just to give you
some ideas.  It is not robust enough for "production" though.

The 2nd input line has 2 /gb fields, and your script would need to
have some way of knowing which one to pick.

>>> for x in s.splitlines():
... 	data = x.split()
... 	output = [ data[0] ]
... 	for z in data[1:]:
... 		if (z.startswith('/GEN') or z.startswith('/gb'))and z not in output:
... 			output.append(z)
... 	print ' '.join(output)
... 	
AFFX-BioB-5_at /GEN=bioB /gb:J04423.1
1415785_a_at /gb:NM_009840.1 /GEN=Cct8 /gb:BC009007.1

HTH :)


From casevh at comcast.net  Mon Sep 25 13:43:14 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 25 Sep 2006 10:43:14 -0700
Subject: python interpreter on solaris 10
In-Reply-To: <1159205234.213553.164990@e3g2000cwe.googlegroups.com>
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
	<1159205234.213553.164990@e3g2000cwe.googlegroups.com>
Message-ID: <1159206194.148219.176800@i42g2000cwa.googlegroups.com>

> i think i've tracked down the equivalent files on my pc. one opens the
> interpreter in a white-backed text editor, the other at the
> black-backed command prompt. i have equivalent files of the same size
> on the workstation, which must be the same. does anyone know why i'm
> getting 'there is no installed viewer capable of displaying the
> document'?

What, exactly, are you doing to create this error?

>
> i have no idea what i need, or where i can get it. any ideas?
>

What happens when you enter the line below at a command prompt?

/usr/bin/python /usr/lib/python2.4/idlelib/idle.py

casevh



From NOSPAM at NO.SPAM.com  Sun Sep  3 01:32:22 2006
From: NOSPAM at NO.SPAM.com (Chris Smith)
Date: Sun, 03 Sep 2006 05:32:22 GMT
Subject: auto fill out web form
Message-ID: <44fa68e5$1@news.comindico.com.au>

Does anyone know of any python scripts that can help me automatically 
navigate through some forms so I can schedule the download the file at the 
end of all the questions? 




From afaNOSPAM at neuf.fr  Thu Sep  7 20:32:41 2006
From: afaNOSPAM at neuf.fr (Amaury Forgeot d'Arc)
Date: Fri, 08 Sep 2006 02:32:41 +0200
Subject: wxPython: StaticText Event
In-Reply-To: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>
References: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>
Message-ID: <edqdn5$2bn7$1@talisker.lacave.net>

David a ?crit :
> Plaese look at this simple class.
(...code...)
> Hovering mouse over the StaticText Control should generate an
> EVT_ENTER_WINDOW event like the TextCtrl Control, but it does not happen.
> 
> How can I make the StaticText event working?

I quick Google search found the following thread:

http://lists.wxwidgets.org/archive/wx-users/msg31855.html
or
http://lists.wxwidgets.org/archive/wx-users/msg31983.html

It suggest that you use another kind of control instead.
Is a disabled TextCtrl acceptable?

Hope this helps,

-- 
Amaury


From skip at pobox.com  Wed Sep 27 06:52:54 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 27 Sep 2006 05:52:54 -0500
Subject: What's up with site.Quitter?
In-Reply-To: <BzsSg.16764$IA.13334@newssvr11.news.prodigy.com>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
	<efdcui$acr$1@news.albasani.net>
	<BzsSg.16764$IA.13334@newssvr11.news.prodigy.com>
Message-ID: <17690.22534.437476.964198@montanaro.dyndns.org>


    James> But then again, maybe the consistency I perceive for the rest of
    James> __builtins__ is more or less illusory. This might have been the
    James> point of Fredrik's question.

As I implied in my note, there is a difference between fundamental builtins
like open and Exception, and convenience builtins like exit and license.  If
you make that distinction and only really worry about consistency within the
fundamental builtins I think you'll be on more solid ground.

Skip



From jon+usenet at unequivocal.co.uk  Mon Sep 25 09:54:16 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 13:54:16 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef5ncc$uus$1@news.albasani.net>
	<slrnehe80c.rk8.jon+usenet@snowy.squish.net>
	<mailman.561.1159188363.10491.python-list@python.org>
Message-ID: <slrnehfns0.6tm.jon+usenet@snowy.squish.net>

In article <mailman.561.1159188363.10491.python-list at python.org>, Fredrik Lundh wrote:
> (still waiting for the "jon's enhanced escape" proposal, btw, but I guess it's
> easier to piss on others than to actually contribute something useful).

Well, yes, you certainly seem to be good at the "pissing on others"
part, even if you have to lie to do it. You have had the "enhanced
escape" proposal all along - it was the post which started this
thread! If you are referring to your strawman argument about
encodings, you have yet to show that it's relevant.

If it'll make you any happier, here's the code for the 'cgi.escape'
equivalent that I usually use:

  _html_encre = re.compile("[&<>\"'+]")
  _html_encodes = { "&": "&amp;", "<": "&lt;", ">": "&gt;", "\"": "&quot;",
		    "'": "&#39;", "+": "&#43;" }

  def html_encode(raw):
    return re.sub(_html_encre, lambda m: _html_encodes[m.group(0)], raw)


From Eric_Dexter at msn.com  Mon Sep  4 11:37:15 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 4 Sep 2006 08:37:15 -0700
Subject: This seems to crash my program and gives me errors on the
	#include statements
In-Reply-To: <edhfja$j0d$1@sunnews.cern.ch>
References: <1157375279.790255.321010@b28g2000cwb.googlegroups.com>
	<mailman.10334.1157378750.27775.python-list@python.org>
	<1157382189.013651.326640@b28g2000cwb.googlegroups.com>
	<edhfja$j0d$1@sunnews.cern.ch>
Message-ID: <1157384235.898716.145660@h48g2000cwc.googlegroups.com>

#import se

# se available at http://cheeseshop.python.org/pypi/SE/2.2%20beta

looks like it is the se beta..  I didn't get any kind of error or
traceback that would tell me that though..




Roberto Bonvallet wrote:
> Eric_Dexter at msn.com wrote:
> > It is giving errors on the import statements..  I will get an error on
> > the line where I import this routine import csoundroutines and then the
> > when I import the the program that tried to import csoundroutines I get
> > an error and on down the chain..
>
> Please paste here the errors you get, and paste also the relevant code (not
> the whole program) that triggers that error.
> 
> -- 
> Roberto Bonvallet



From ironfroggy at gmail.com  Sun Sep 17 14:31:50 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Sun, 17 Sep 2006 14:31:50 -0400
Subject: Hardlinks on NTFS
In-Reply-To: <450D81BB.20005@freakmail.de>
References: <450D81BB.20005@freakmail.de>
Message-ID: <76fd5acf0609171131t3378018bqbe734307dfe0045@mail.gmail.com>

On 9/17/06, Wildemar Wildenburger <wildemar at freakmail.de> wrote:
> Hi :)
>
> I'm thinking of letting my program create hardlinks (or symlinks). I
> know python allows doing this for ext, reiser and the like, but
> apparently not for ntfs systems.
> Is there any package out there that lets me create links in a platform
> independent way?
>
> bye
> wildemar

Why isn't NTFS handled the same as any other hardlink supporting
filesystem? Is it a choice or a bug?


From larry.bates at websafe.com  Mon Sep 11 10:13:27 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 09:13:27 -0500
Subject: best small database?
In-Reply-To: <0rdNg.6440$c22.5757@trnddc07>
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>

David Isaac wrote:
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.
> 
> Suggestions?
> 
> Thank you,
> Alan Isaac
> 
> 
If they are files, just use the filesyatem, you don't need a
database.  If you need multiple indexes into these files, then
use a database, but only for the indexes that point to the
files on the filesystem.  The filesystem is almost always the
most efficient place to store files, not as blobs in a
database.

The answer about which database depends on your target
platform but you could consider gadfly.

-Larry Bates



From gagsl-py at yahoo.com.ar  Wed Sep 20 20:38:08 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 21:38:08 -0300
Subject: access to xml_rpc server problem
In-Reply-To: <454FD769B559DD4BAC93B2CCA7BEBDBE0121CD99@namail2.corp.adob e.com>
References: <qhfyemb5oa.fsf@ruckus.brouhaha.com>
	<454FD769B559DD4BAC93B2CCA7BEBDBE0121CD99@namail2.corp.adobe.com>
Message-ID: <7.0.1.0.0.20060920213710.05866098@yahoo.com.ar>

At Wednesday 20/9/2006 21:30, Ted Zeng wrote:

>But if I use server's ip address instead of localhost in the client,
>then it could not access the server.

Maybe you have a firewall blocking access?



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
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http://www.yahoo.com.ar/respuestas



From felipe.lessa at gmail.com  Fri Sep  8 16:48:11 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Fri, 8 Sep 2006 17:48:11 -0300
Subject: best split tokens?
In-Reply-To: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
Message-ID: <c2701f5c0609081348p533f6a29l5c806665a1946fbf@mail.gmail.com>

8 Sep 2006 13:41:48 -0700, Jay <jaysherby at gmail.com>:
> Let's say, for instance, that one was programming a spell checker or
> some other function where the contents of a string from a text-editor's
> text box needed to be split so that the resulting array has each word
> as an element.  Is there a shortcut to do this and, if not, what's the
> best and most efficient token group for the split function to achieve
> this?

your_string.split()

-- 
Felipe.


From wahab at chemie.uni-halle.de  Thu Sep 28 18:20:39 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Fri, 29 Sep 2006 00:20:39 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <pan.2006.09.28.21.38.05.238983@gmx.net>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<mailman.901.1159469166.10491.python-list@python.org>
	<efhdt1$9a1$1@mlucom4.urz.uni-halle.de>
	<pan.2006.09.28.21.38.05.238983@gmx.net>
Message-ID: <efhi4e$aaj$1@mlucom4.urz.uni-halle.de>

Thus spoke Marc 'BlackJack' Rintsch (on 2006-09-28 23:38):

>>   def int2bin(num, width=32):
>>     return ''.join(['%c'%(ord('0')+bool((1<<k)&num)) for k in range((width-1),-1,-1)])
> 
> Yeah, I wonder why not everybody sees the beauty in this cool and
> straightforward one liner.  ;-)

Right. I see this is BS, maybe lots of these lines exist already,
one could come up with (sorted by obfuscation, descending):

def int2bin(num, width=32):
#  return ''.join( [chr(ord('0')+bool(1<<k & num))for k in range(width-1,-1,-1)] )
#  return ''.join( map(lambda k:str(num>>k & 1),range(width-1, -1, -1)) )
#  return ''.join( [str(num>>k & 1)for k in range(width-1, -1, -1)] )

But after some thinking, I thought about discussing this one:

def i2b(num, width):
  return str(1 & num>>(width-1)) + i2b(num, width-1) if width else ''

which is the shortest ;-)

(Sorry but I'm more or less a newbie, maybe this is BS too ...)

Regards

Mirco


From gagsl-py at yahoo.com.ar  Tue Sep 26 01:13:42 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 02:13:42 -0300
Subject: accepts decorator
In-Reply-To: <1159232312.285993.309150@h48g2000cwc.googlegroups.com>
References: <1159222161.439787.296650@d34g2000cwd.googlegroups.com>
	<1159232312.285993.309150@h48g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926020811.04a7caa8@yahoo.com.ar>

At Monday 25/9/2006 21:58, urielka wrote:

>i think i got what the * and ** mean.
>*args mean arguments that are assigned by position(that is why *arg is
>a tuple)
>**kwds mean arguments that are assigned using equals a=2,b=3 (that is
>why **kwds i a dict)
>but why self is in *args and other thing goes to **kwds? even if not
>assigned using equals

For these elemental things you should start by reading the Python 
tutorial included with the documentation - it's easy.
And for decorators, this is a good text 
http://www.phyast.pitt.edu/~micheles/python/documentation.html which 
supplements the Python docs.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From bernd at ewill.de  Mon Sep 25 16:44:03 2006
From: bernd at ewill.de (BerndWill)
Date: Mon, 25 Sep 2006 22:44:03 +0200
Subject: SSL meta data
References: <ef99ht$ih2$1@svr7.m-online.net><7xk63r21t2.fsf@ruckus.brouhaha.com>
	<mailman.601.1159213325.10491.python-list@python.org>
Message-ID: <ef9f2j$kib$1@svr7.m-online.net>

Thanks Jan.
I will try pycurl then.

Regards
Bernd

"Jan Dries" <jan.dries at dcube-resource.be> schrieb im Newsbeitrag 
news:mailman.601.1159213325.10491.python-list at python.org...
> Paul Rubin wrote:
>> "BerndWill" <bernd at ewill.de> writes:
>>> I would love to read programmatically some information out of the 
>>> certificates itself (who signed it and what is the validation period, 
>>> i.e. meta data).
>>>
>>>  Can someone please help me out here !?
>>
>> This is very cheesy but I sometimes I've just run the openssl command
>> line utility with popen and read the output:
>>
>>   openssl x509 -text -noout -in certfile
>>
>> will dump out the cert contents and you can parse it with regexps.
>>
>> The right way to do it is to make the appropriate m2crypto (or
>> whatever) calls that parse the cert directly.
>
> I'm not sure this is what the OP is looking for. Your method assumes the 
> certificate is on the local file system, while it seems to me he wants to 
> do an HTTPS request to one of their servers and obtain information from 
> the certificate installed there.
>
> For doing that, cURL might be a good choice (either the command line 
> version (http://curl.haxx.se) or the python extension module PycURL 
> http://pycurl.sourceforge.net/)).
>
> For instance:
>
> C:\> curl -v https://www.paypal.com
>
> * About to connect() to www.paypal.com port 443
> *   Trying 216.113.188.65... * connected
> * Connected to www.paypal.com (216.113.188.65) port 443
> * successfully set certificate verify locations:
> *   CAfile: C:\home\personal\development\bin\curl-ca-bundle.crt
>   CApath: none
> * SSL connection using DHE-RSA-AES256-SHA
> * Server certificate:
> *        subject: /C=US/ST=California/L=Mountain View/O=Paypal 
> Inc./OU=Information Systems/OU=Terms of use at
> www.verisign.com/rpa (c)00/CN=www.paypal.com
> *        start date: 2006-02-09 00:00:00 GMT
> *        expire date: 2008-02-09 23:59:59 GMT
> *        common name: www.paypal.com (matched)
> *        issuer: /O=VeriSign Trust Network/OU=VeriSign, Inc./OU=VeriSign 
> International Server CA - Class 3/OU=
> www.verisign.com/CPS Incorp.by Ref. LIABILITY LTD.(c)97 VeriSign
> * SSL certificate verify ok.
>
> [more output deleted]
>
> I'm sure that by using the cURL API directly, you can obtain the 
> certificate information in a more direct way without having to rely on 
> parsing the above output with regexps. Doing so might also be more complex 
> though :-)
>
> Regards,
> Jan
> 




From kay.schluehr at gmx.net  Sun Sep 24 15:53:57 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 24 Sep 2006 12:53:57 -0700
Subject: +1 QOTW
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
Message-ID: <1159127636.967714.73240@i42g2000cwa.googlegroups.com>

olsongt at verizon.net wrote:
> Did anyone else crack up when Larry Wall described python with the
> statement:
>
> Python, as the "anti-Perl," is heavily invested in maintaining Order.
>
> In the state of the onion address?
>
> http://www.perl.com/pub/a/2006/09/21/onion.html

Think he's just too charming. I never got through Larrys whole
apocalypse. A little weirdness like this one is a great piece but too
much of it is insane.



From emlyn at brizzle.com  Fri Sep  8 19:53:45 2006
From: emlyn at brizzle.com (ml1n)
Date: 8 Sep 2006 16:53:45 -0700
Subject: Map with an extra parameter
Message-ID: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>

Hi,
I'm not really sure how to explain this so maybe some example code is
best.  This code makes a list of objects by taking a list of ints and
combining them with a constant:

class foo:
  def __init__(self):
     self.a = 0
     self.b = 0

def func(a,b):
  f = new foo()
  f.a = a
  f.b = b
  return f

constants = [1]*6
vars = [1,2,3,4,5,6]
objects = map(func,vars,constants)

In the real world I need to do this as quick as possible (without
resorting to c) and there are several constants. (The constant is only
constant to each list so I can't make it a default argument to func.)
My question is, can anyone think of a way to do this efficiently
without having to use the `dummy` list of constants and would it be
quicker? 

M.



From sjmachin at lexicon.net  Fri Sep 15 10:42:53 2006
From: sjmachin at lexicon.net (John Machin)
Date: 15 Sep 2006 07:42:53 -0700
Subject: urlopen() error
In-Reply-To: <mailman.186.1157756445.5279.python-list@python.org>
References: <1157752728.685285.197130@i42g2000cwa.googlegroups.com>
	<mailman.186.1157756445.5279.python-list@python.org>
Message-ID: <1158331373.501982.239560@d34g2000cwd.googlegroups.com>


Paul McNett wrote:
> Tempo wrote:
> > Hello. I am getting an error and it has gotten me stuck. I think the
> > best thing I can do is post my code and the error message and thank
> > everybody in advanced for any help that you give this issue. Thank you.
> >
> > #############
> > Here's the code:
> > #############
> >
> > import urllib2
> > import re
> > import xlrd
> > from BeautifulSoup import BeautifulSoup
> >
> > book = xlrd.open_workbook("ige_virtualMoney.xls")
> > sh = book.sheet_by_index(0)
> > rx = 1
> > for rx in range(sh.nrows):

The above 2 lines should probably be:
   for rx.range(1, sh.nrows):
otherwise the likelihood is that a column heading will be treated as
data.
Now read on ;-)

> >     u = sh.cell_value(rx, 0)
> >     page = urllib2.urlopen(u)
> >     soup = BeautifulSoup(page)
> >     p = soup.findAll('span', "sale")
> >     p = str(p)
> >     p2 = re.findall('\$\d+\.\d\d', p)
> >     for price in p2:
> > 		print price
> >
> > ######################
> > Here are the error messages:
> > ######################
> >
> > Traceback (most recent call last):
> >   File "E:\Python24\scraper.py", line 16, in -toplevel-
> >     page = urllib2.urlopen(u)
> >   File "E:\Python24\lib\urllib2.py", line 130, in urlopen
> >     return _opener.open(url, data)
> >   File "E:\Python24\lib\urllib2.py", line 350, in open
> >     protocol = req.get_type()
> >   File "E:\Python24\lib\urllib2.py", line 233, in get_type
> >     raise ValueError, "unknown url type: %s" % self.__original
> > ValueError: unknown url type: List
>
> You were expecting u to be a url string like "http://google.com", but it
> looks like it is actually a list. I'm not familiar with package xlrd but
> cell_value() must be returning a list and not a cell value. Presumably,
> the list contains the cell value probably in element 0. Put in a print
> statement before your call to urlopen() like:
>
> print u

Sage advice. print repr(u) is in general even better advice.

>
> You'll likely discover your error.
>

Just for the record:

1. The xlrd package's Book.Sheet.cell_value() does *not* return lists.
As its docs say, it returns scalars, of the following types: unicode,
int, float, strg

2. The error is nothing to do with Python lists, it's all about
malformed URLs. "unknown url type" means it's not one of http, ftp,
file, data, gopher, ...

|>>> x = urllib2.urlopen('List')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "C:\Python24\lib\urllib2.py", line 130, in urlopen
    return _opener.open(url, data)
  File "C:\Python24\lib\urllib2.py", line 350, in open
    protocol = req.get_type()
  File "C:\Python24\lib\urllib2.py", line 233, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: List

|>>> x = urllib2.urlopen('GOTCHA')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "C:\Python24\lib\urllib2.py", line 130, in urlopen
    return _opener.open(url, data)
  File "C:\Python24\lib\urllib2.py", line 350, in open
    protocol = req.get_type()
  File "C:\Python24\lib\urllib2.py", line 233, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: GOTCHA
|>>>

HTH,
John



From bearophileHUGS at lycos.com  Wed Sep 27 20:45:16 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 27 Sep 2006 17:45:16 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <451b2c0b@news.bezeqint.net>
References: <451b2c0b@news.bezeqint.net>
Message-ID: <1159404316.140577.68700@b28g2000cwb.googlegroups.com>

efrat:

>1. What exactly is a Python list?

A dynamic array that can grow geometrically on the right.


>If one writes a[n], then is the complexity Theta(n)? If this is O(1),<

It is O(1).


>then why was the name "list" chosen?

I'd too love to know why the wrong "list" name was chosen for them,
instead of "array". (Maybe because "list" is shorter, or because ABC
called them "lists"...)


>2. Suppose I have some file example.py, and I'd like to incorporate it
**into** part of an HTML page with nice syntax highlighting and all the
shebang. Is there an easy way to do so?<

There are many programs that do this, I use a modified version of
PySourceColor:
http://bellsouthpwp.net/m/e/mefjr75/


Using Python to teach data structures and algorithms to
electrical-engineers students:
The following personal ideas may seem wrong, but if they are wrong,
than I'd like to know why.
I think Python is only partially fit for your purpose. If you want to
teach how complex data structures work in general, and some smart
algorithms on them, like teaching some interesting graph algorithms,
then Python is fit, because implementing such algorithms is often
simple, etc.
But to manage simple data structures Python isn't good, because it's
too much slow compared to the simple operations, and it uses too much
memory. One of the basic data structures is the chained list, you can
easly implement a chained list in Python, but the result is often
useless and without meaning, maybe even for teaching purposes. Python
is too much hi-level, while most of the basic data structures use
pointers and they have a meaning if done closer to the 'metal'. With
Python you can't have pointers (just names of objects) and some times
if you use a "fast" data structure you end doing things slower than
using the built-in data structures like dicts. So to teach some of the
basic data structures to your electrical-engineers students I think
Pascal is the best choice still :-)
(Note: to teach DSA to CS students C can be fit too, and to teach a bit
of DSA to younger people Python can be better.)

Bye,
bearophile



From fredrik at pythonware.com  Fri Sep 29 12:00:03 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 18:00:03 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159545255.339364.299020@k70g2000cwa.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>	<451CD389.3010800@jessikat.plus.net>	<mailman.932.1159533269.10491.python-list@python.org>	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>	<mailman.948.1159542291.10491.python-list@python.org>
	<1159545255.339364.299020@k70g2000cwa.googlegroups.com>
Message-ID: <efjfu2$tmu$1@sea.gmane.org>

Larry Hastings wrote:


>> what's in "s" when that loop is done?
> 
> It's equivalent to " 'a' * 10000000 ".  (I shan't post it here.)

but what *is* it ?  an ordinary PyString object with a flattened buffer, 
or something else ?

</F>



From javier_subervi at yahoo.com  Sun Sep 24 09:00:57 2006
From: javier_subervi at yahoo.com (Javier Subervi)
Date: Sun, 24 Sep 2006 06:00:57 -0700 (PDT)
Subject: AttributeError Question
Message-ID: <20060924130057.1762.qmail@web90315.mail.mud.yahoo.com>

Hi;
I'm new to troubleshooting scripts. This came up when trying to load a Zope product:

    * Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__
      __traceback_info__: field.Vocabulary(here)
    * Module Python expression "field.Vocabulary(here)", line 1, in <expression>
    * Module Products.Archetypes.Field, line 432, in Vocabulary
    * Module Products.Archetypes.utils, line 145, in mapply
    * Module Products.EasyDocument.content.EasyDocument, line 112, in _list_templates
    * Module OFS.Traversable, line 161, in unrestrictedTraverse
      __traceback_info__: ([], 'EasyDocumentTemplates')
    * Module Products.Archetypes.BaseObject, line 1072, in __bobo_traverse__

AttributeError: EasyDocumentTemplates

Can you tell me what I should do with Attribute Errors in general? The docs say an AttributeError is "Raised when an attribute reference or assignment fails." Okay, fine...where do I go from here?
TIA,
beno2
 		
---------------------------------
Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls.  Great rates starting at 1?/min.
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From jstroud at mbi.ucla.edu  Wed Sep 13 05:14:05 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 13 Sep 2006 09:14:05 GMT
Subject: table (ascii text) lin ayout recognition
In-Reply-To: <8RPNg.748$TV3.408@newssvr21.news.prodigy.com>
References: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
	<8RPNg.748$TV3.408@newssvr21.news.prodigy.com>
Message-ID: <xZPNg.749$TV3.305@newssvr21.news.prodigy.com>

James Stroud wrote:
> indices = [t for t in zip(indices[::2],indices[1::2])]

(Artefact of cut-and-paste.)

Make that:

indices = zip(indices[::2],indices[1::2])



James


From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:24:57 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:24:57 +1200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
	<mailman.629.1159250957.10491.python-list@python.org>
	<efaj9p$fqq$2@lust.ihug.co.nz>
Message-ID: <efakif$idf$1@lust.ihug.co.nz>

In message <efaj9p$fqq$2 at lust.ihug.co.nz>, I wrote:

> In message <mailman.629.1159250957.10491.python-list at python.org>, Fredrik
> Lundh wrote:
> 
>> Lawrence D'Oliveiro wrote:
>> 
>>>         yield dict(zip(Fields, NextRow))
>> 
>> the OP didn't ask for a field name => value mapping, though.
> 
> What other kind of mapping could you produce?

All right, sorry, looks like they want to load the entire table into RAM and
key it off the first field. Kind of defeats the point of having SQL, but
there you go...


From ilias at lazaridis.com  Tue Sep  5 09:32:23 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 5 Sep 2006 06:32:23 -0700
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <44fc4ebe$0$27243$636a55ce@news.free.fr>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
	<1157129694.958006.40250@i3g2000cwc.googlegroups.com>
	<44fc4ebe$0$27243$636a55ce@news.free.fr>
Message-ID: <1157463143.871754.119180@d34g2000cwd.googlegroups.com>

Bruno Desthuilliers wrote:
> lazaridis_com wrote:
> > ?/? Bruno Desthuilliers ??????:
> >> lazaridis_com wrote:
> >>> John Salerno wrote:
> >>>> Are there any major differences between these two? It seems they can
> >>>> both be used with TurboGears, and SQLAlchemy with Django. I'm just
> >>>> wondering what everyone's preference is, and why, and if there are even
> >>>> more choices for ORM.
> >>>>
> >>>> Thanks.
> >>> You can review the Persit Case, which will shortly evaluate the stated
> >>> ORM's:
> >>>
> >>> http://case.lazaridis.com/wiki/Persist
> >>>
> >>> It is possibly of importance to remember some requirements which should
> >>> be relevant for an persistency mechanism targetting an OO language:
> >> RDBMS are not "persistency mechanism", they are data management tools.
> >
> > possibly.
> >
> > but this is not relevant, as the "Persist" case does not deal with
> > RDBMS.
> >
> Then your post is irrelevant since there's a clear indication that the
> OP question was about RDBMS integration in Python (hint: SQLObject and
> SQLAlchemy both start with 'SQL').
...

Of course it's relevant.

"I'm just wondering what everyone's preference is, and why, and if
there are even more choices for ORM."

The "persist case" evaluates python persistency systems (or
mechanisms), and will show my personal preference:

"Object Oriented Persistency Systems (this includes OODBMS,
Object-Relational-Mappers, and others)."

http://case.lazaridis.com/wiki/Persist

.



From larry.bates at websafe.com  Mon Sep 18 13:18:51 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 18 Sep 2006 12:18:51 -0500
Subject: Help
In-Reply-To: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
References: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
Message-ID: <ZN6dnTbagPKXSJPYnZ2dnUVZ_sudnZ2d@comcast.com>

Rrajal wrote:
> Hi there, I am new in this subject so could you please tell me from
> where I can get help (or good e-book) of python?
> 
Some books that helped me:

Python Bible by Dave Brueck and Stephen Tanner
Python Cookbook by Alex Martelli, Anna Martelli Revenscroft &
 David Ascher
Python programming on Win 32 by Mark Hammond & Andy Robinson

-Larry Bates


From george.sakkis at gmail.com  Tue Sep 26 13:58:23 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 10:58:23 -0700
Subject: iterator question
In-Reply-To: <slrnehipsi.ds.horpner@FIAD06.norwich.edu>
References: <mailman.716.1159290541.10491.python-list@python.org>
	<slrnehipsi.ds.horpner@FIAD06.norwich.edu>
Message-ID: <1159293503.138171.312280@k70g2000cwa.googlegroups.com>

Neil Cerutti wrote:

> On 2006-09-26, Neal Becker <ndbecker2 at gmail.com> wrote:
> > Any suggestions for transforming the sequence:
> >
> > [1, 2, 3, 4...]
> > Where 1,2,3.. are it the ith item in an arbitrary sequence
> >
> > into a succession of tuples:
> >
> > [(1, 2), (3, 4)...]
> >
> > In other words, given a seq and an integer that specifies the
> > size of tuple to return, then for example:
>
> It turns out there's a itertools recipe to do this; the last one
> in the itertools recipe book:
>
> def grouper(n, iterable, padvalue=None):
>     """
>     grouper(3, 'abcdefg', 'x') --> ('a','b','c'), ('d','e','f'), ('g','x','x')
>
>     """
>     return izip(*[chain(iterable, repeat(padvalue, n-1))]*n)

That's not quite the same as the previous suggestions; if the last
tuple is shorter than n, it pads the last tuple with padvalue. The OP
didn't mention if he wants that or he'd rather have a shorter last
tuple.

George



From python.list at tim.thechases.com  Fri Sep  8 16:55:23 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 08 Sep 2006 15:55:23 -0500
Subject: best split tokens?
In-Reply-To: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
Message-ID: <4501D8BB.1010708@tim.thechases.com>

> Let's say, for instance, that one was programming a spell checker or
> some other function where the contents of a string from a text-editor's
> text box needed to be split so that the resulting array has each word
> as an element.  Is there a shortcut to do this and, if not, what's the
> best and most efficient token group for the split function to achieve
> this?


Do you mean like

	for word in string_from_text_box.split():
		spell_check(word)

Every string has a split() method which, by default, splits the 
string at runs of whitespace.

 >>> help("".split)

will give you more info.

-tkc





From sebastien.thur at laposte.net  Wed Sep  6 09:18:47 2006
From: sebastien.thur at laposte.net (seb)
Date: 6 Sep 2006 06:18:47 -0700
Subject: getting quick arp request
In-Reply-To: <1157545228.519716.259040@i42g2000cwa.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
Message-ID: <1157548727.183764.310360@i3g2000cwc.googlegroups.com>

Hi Ben,

I am indeed using XP SP2.

-------------------------
Some more info :
-------------------------

1)
I have checked on the event viewer and I have not seen the event 4226
while I have run the code sample above.

2)
I can still see this error (4226) recently In the log so that I must
have bumped against this limit trying to put pull this out.

3)
I have installed today process explorer (from sysinternals).
I am not completly used to it but you can have a look at the TCP/IP
connections opened by the processes.
It appears that I have alwyas 10 connections opened (and the IP
adresses progress durning the scan from Ip adresse 192.168.3.1 -> 254).

4)
Besides I also run on the same PC angry Ip scanner 2.21. Checking using
ethereal the arp request are all dispatched quit quickly (see my mail
above).

------------------------
NEW RESULT :
-----------------------

Something is limiting the TCP/IP connections from my python program at
10 maximum at the same time.
I do not see this limit in my code.
I did not bumped over the 4226 error.

=> Where does this limit come from.
=> How can I overcome it.

Thanks for the advice anyway.
Sebastien.




Ben Sizer wrote:
> seb wrote:
> > I need to write a scanner that test all the IP adresses that repond on
> > a given port.
> ...
> > I am using winXP pro on a 2GHZ P4 and 512 Mo.
>
> If you have XP Service Pack 2, it cripples port-scanning as part of a
> 'security' fix. Broadly speaking, it limits the rate at which you can
> make connections at the OS level; this will show up as event 4226 in
> the Event Viewer if it affects you.
> 
> -- 
> Ben Sizer



From bdesth.quelquechose at free.quelquepart.fr  Sat Sep 23 17:13:01 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 23 Sep 2006 23:13:01 +0200
Subject: returning None instead of value: how to fix?
In-Reply-To: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
Message-ID: <45159fd4$0$4644$626a54ce@news.free.fr>

sam a ?crit :
> i am starting to experiment with recursion, and decided to write a
> fairly trivial little program which took a float as input, then called
> a function to halve it recursively until it was less than 1:

And forgot to return the result from the recursive call, I guess ?-)


From peter.maas at somewhere.com  Mon Sep  4 16:02:54 2006
From: peter.maas at somewhere.com (Peter Maas)
Date: Mon, 04 Sep 2006 22:02:54 +0200
Subject: Test for number?
In-Reply-To: <mailman.10343.1157394315.27775.python-list@python.org>
References: <G51489767.912.3617.1@mx-extra>
	<mailman.10343.1157394315.27775.python-list@python.org>
Message-ID: <edi0q2$gjo$1@online.de>

Tim Williams wrote:
> On 04/09/06, Dr. Pastor <elpX at adsihqx.com> wrote:
>> In the following code I would like to ascertain
>> that x has/is a number. What the simplest TEST should be?

def isnumber(value):
    try:
        value/1
        return true
    except TypeError:
        return false

I think this works for all builtin types. Of course one could
overload '/' for a non-numeric class. The best solution would
be to introduce a super class base_number for int, long, float
and decimal, similar to base_string for str and unicode.

This would probably be not too hard to implement and surely not
break old code :)

Peter Maas, Aachen


From steven.bethard at gmail.com  Fri Sep 15 10:23:37 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 15 Sep 2006 08:23:37 -0600
Subject: high level, fast XML package for Python?
In-Reply-To: <4mvnqmF7r4a3U1@uni-berlin.de>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<4mvnqmF7r4a3U1@uni-berlin.de>
Message-ID: <OIWdnc8WMLf2KpfYnZ2dnUVZ_omdnZ2d@comcast.com>

Diez B. Roggisch wrote:
> Gleb Rybkin wrote:
> 
>> I searched online, but couldn't really find a standard package for
>> working with Python and XML -- everybody seems to suggest different
>> ones.
>>
>> Is there a standard xml package for Python? Preferably high-level, fast
>> and that can parse in-file, not in-memory since I  have to deal with
>> potentially MBs of data.
> 
> cElementTree and lxml (which is API-compatible to the former). cElementTree
> has an incremental parser, which allows for lager-than-memory-files to be
> processed.

In Python 2.5, cElementTree and ElementTree will be available in the 
standard library as xml.etree.cElementTree and xml.etree.ElementTree. 
So learning them now is a great idea.

STeVe


From deets at nospam.web.de  Thu Sep  7 11:51:23 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 07 Sep 2006 17:51:23 +0200
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
Message-ID: <4matfsF5babeU1@uni-berlin.de>

Francach schrieb:
> Hi,
> 
> I'm trying to use the Beautiful Soup package to parse through the
> "bookmarks.html" file which Firefox exports all your bookmarks into.
> I've been struggling with the documentation trying to figure out how to
> extract all the urls. Has anybody got a couple of longer examples using
> Beautiful Soup I could play around with?

Why do you use BeautifulSoup on that? It's generated content, and I 
suppose it is well-formed, most probably even xml. So use a standard 
parser here, better yet somthing like lxml/elementtree

Diez


From http  Mon Sep 25 04:44:53 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 01:44:53 -0700
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org>
	<7xy7s8crty.fsf@ruckus.brouhaha.com>
	<45178f23$0$19894$4d3efbfe@news.sover.net>
	<7xwt7suzv8.fsf@ruckus.brouhaha.com>
	<1159173488.326443.245730@d34g2000cwd.googlegroups.com>
Message-ID: <7xzmcoe3ne.fsf@ruckus.brouhaha.com>

"John Machin" <sjmachin at lexicon.net> writes:
> Actually, what Willie was concerned about was some cockamamie DBMS
> which required to be fed Unicode, which it encoded as UTF-8,

Yeah, I remember that.

> Tell you what, why don't you and Willie get together and write a PEP?

If enough people care about the problem, I'd say just submit a code
patch.  I haven't needed it myself, but I haven't (so far) had to deal
with unicode that often.  It's a reasonably logical thing to want.
Imagine if the normal length(string) function required copying the
string around.


From MonkeeSage at gmail.com  Sun Sep 24 08:07:01 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 24 Sep 2006 05:07:01 -0700
Subject: HTTP GET Explodes...
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
	<1159064765.214210.300630@k70g2000cwa.googlegroups.com>
	<15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
	<1159074660.273157.141760@k70g2000cwa.googlegroups.com>
	<1159081153.409155.85050@k70g2000cwa.googlegroups.com>
Message-ID: <1159099621.629324.72200@k70g2000cwa.googlegroups.com>

Pete wrote:
> So, I looked at my search path under the account that was experiencing
> the problem. That wasn't it... Then I'm thinking there's an
> environmental variable causing this. Too many to work right now. Will
> investigate later.

You can see all environment variables with the declare command:

$ declare
BASH=/bin/bash
BASH_ARGC=()
BASH_ARGV=()
...
XTERM_SHELL=/bin/bash
XTERM_VERSION='XTerm(220)'
_=declare

Regards,
Jordan



From sjmachin at lexicon.net  Tue Sep 26 06:28:03 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 03:28:03 -0700
Subject: where are isinstance types documented?
In-Reply-To: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
Message-ID: <1159266483.288517.84960@b28g2000cwb.googlegroups.com>

codefire wrote:
> Hi,
>
> I'm using the isinstance built-in function. I've found the docs for it,
> but there are no docs on the supported types.

It supports *all* types.

>
> For example isinstance(a, int) works fine but isinstance(s, string)
> doesn't - because 'string is not known'.

That's because there is no built-in type called "string".

>
> I do know how to import the types module and then use defined types
> such as 'types.StringType' - but the documentation says that from 2.2
> this is not the preferred way.
>
> So, where's the documentation for types I can use with isinstance, such
> as 'int'?

This is must-read stuff, but doesn't give the actual type names:
    http://docs.python.org/ref/types.html
What you are looking for is this:
    http://docs.python.org/lib/types.html
which is also must-read, but you may find it faster to use the "Who's
your father?" technique on a known instance:

| >>> type([])
| <type 'list'>
| >>> type('')
| <type 'str'>
| >>> type(u'')
| <type 'unicode'>
| >>> isinstance('foo', str)
| True
| >>> isinstance('foo', unicode)
| False

"Who's your grandfather?" can be useful, too:

| >>> str.__mro__
| (<type 'str'>, <type 'basestring'>, <type 'object'>)
| >>> isinstance('foo', basestring)
| True
| >>> isinstance(u'u2', basestring)
| True

HTH,
John



From usenet at vfx.org.uk  Wed Sep 27 12:51:15 2006
From: usenet at vfx.org.uk (Mike Playle)
Date: Wed, 27 Sep 2006 17:51:15 +0100
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
Message-ID: <pan.2006.09.27.16.51.12.529785@vfx.org.uk>

On Fri, 22 Sep 2006 11:51:01 -0700, T wrote:

> We all know that there are many softwares that require some license key
> or registration key to enable them.  How does one implement something
> like this in python?

Here's a slightly different take on license keys that
nobody else has mentioned:

License keys exist to make it easier for honest users to
remain honest. Since any scheme can be cracked, dishonest
users will use your software without paying for it with
or without a license key scheme, so there's no point
spending much effort on the dishonest. Focus instead on
what your honest users want.

For instance a customer might want to buy a license to
use your software on up to 5 machines at once, but still
have the software installed on every machine in the
company. License systems like FlexLM can work here, to
make it easier for them to ensure that they comply with
the terms of the license.

Forget about the people who'll crack your software. Ask
yourself whether a license key scheme offers anything
to the people who won't try to crack it. If it does, then
actually implementing the scheme becomes trivial; if it
doesn't, then leave it out, because it won't help against
crackers.

Mike



From martin at v.loewis.de  Thu Sep 28 14:28:17 2006
From: martin at v.loewis.de (=?windows-1252?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 28 Sep 2006 20:28:17 +0200
Subject: Python and Win95B
In-Reply-To: <mailman.875.1159443572.10491.python-list@python.org>
References: <mailman.875.1159443572.10491.python-list@python.org>
Message-ID: <451C1441.4030803@v.loewis.de>

Ciar?n ? Duibh?n schrieb:
> I've just installed Python 2.5 under Win95B, and when run it says "The
> PYTHON25.DLL file is linked to missing export
> KERNEL32.DLL.GetFileAttributesExA".
> 
> Does Python 2.5 not run under Win95?  

Apparently not. I knew this would be a problem when I wrote the code
that uses GetFileAttributes; I then forgot to fix it before the
release was made, and nobody reported that problem during the beta
tests. If you think it should be fixed, please report it to
sf.net/projects/python.

> If not, is there an earlier version of Python which does?

This specific problem shouldn't exist in Python 2.4, and I recall
that I tested some 2.4 release on Windows 95.

Regards,
Martin


From siona at chiark.greenend.org.uk  Tue Sep 26 11:44:26 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 26 Sep 2006 16:44:26 +0100 (BST)
Subject: where are isinstance types documented?
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
	<mailman.661.1159266060.10491.python-list@python.org>
Message-ID: <wXk*2kLrr@news.chiark.greenend.org.uk>

Fredrik Lundh  <fredrik at pythonware.com> wrote:
>based on http://docs.python.org/ref/types.html, here's a list of the 
>most commonly used core types:
> [ ... ]
>Sequences:
>     str
>     unicode
>     tuple
>     list

And set, presumably.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From jon+usenet at unequivocal.co.uk  Mon Sep 25 11:49:52 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 15:49:52 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<1159196923.577648.192520@i42g2000cwa.googlegroups.com>
Message-ID: <slrnehfuko.6tm.jon+usenet@snowy.squish.net>

In article <1159196923.577648.192520 at i42g2000cwa.googlegroups.com>, and-google at doxdesk.com wrote:
>> I'm sorry, that's not good enough. How, precisely, would it break
>> "existing code"?
> 
> ('owdo Mr. Ribbens!)

Good afternoon Mr Glover ;-)

>     URI= 'http://www.oreilly.com/'
>     html= cgi.escape(text)
>     html= html.replace('O\'Reilly', '<a href="%s">O\'Reilly</a>' % URI)
> 
> Sure this may be rare, but it's what the documentation says, and
> changing it may not only fix things but also subtly break things in
> ways that are hard to detect.

I'm not sure about "subtly break things", but you're right that the
above code would break. I could argue that it's broken already,
(since it's doing a plain-text search on HTML data) but given
real-world considerations it's reasonable enough that I won't be that
pedantic ;-)

> I personally think the entire function should be deprecated, firstly
> because it's insufficient in some corner cases (apostrophes as you
> pointed out, and XHTML CDATA), and secondly because it's in the wrong
> place: HTML-escaping is nothing to do with the CGI interface. A good
> template library should deal with escaping more smoothly and correctly
> than cgi.escape. (It may be able to deal with escape-or-not-bother and
> character encoding issues automatically, for example.)

I agree that in most situations you should probably be using a
template library, but sometimes a simple CGI-and-manual-HTML system
suffices, and I think (a fixed version of) cgi.escape should exist at
a low level of the web application stack.


From sylvain.thenault at logilab.fr  Tue Sep 26 05:10:24 2006
From: sylvain.thenault at logilab.fr (Sylvain =?iso-8859-1?Q?Th=E9nault?=)
Date: Tue, 26 Sep 2006 11:10:24 +0200
Subject: [ANN] logilab-common 0.19.2
Message-ID: <20060926091024.GD24712@crater.logilab.fr>


Hi there !

I'm pleased to announce the 0.19.2 release of Logilab common package.
This release include some bug fixes and have tests passing from python 2.3
to python 2.5 :). You may be surprised by the version number since we have 
been missing public annoucements recently. To quote Alexandre, we got a bit 
sloppy in the public part of our release process, and the mails did not 
fly... Hopefuly we'll be better on this in a near future. Take a look at
the change log to get information about what's changed in the recent
"discret" versions.


What's new ?
------------
* testlib:
  - fixed a bug in find_test making it returns some bad test names
  - new assertIsInstance method on TestCase
* optik_ext: make it works if mx.DateTime is not installed, in which case
  the date type option won't be available
* test fixes


What is common ?
------------------------
logilab-common is a collection of low-level Python packages and modules,
 designed to ease:
  * handling command line options and configuration files
  * writing interactive command line tools
  * manipulation files and character strings
  * interfacing to OmniORB
  * generating of SQL queries
  * running unit tests
  * manipulating tree structures
  * accessing RDBMS (currently postgreSQL, mysql and sqlite)
  * generating text and HTML reports
  * logging
  ...

Home page
---------
http://www.logilab.org/projects/common

Download
--------
ftp://ftp.logilab.org/pub/common

Mailing list
------------
mailto://python-projects at lists.logilab.org

LOGILAB provides services in the fields of XML techniques and advanced
computing (implementation of intelligent agents, knowledge management,
natural language processing, statistical analysis, data mining, etc.),
and also trainings on Python, XML, UML, Object Oriented design, design
patterns use and other cutting edge topics. To know more about
Logilab, visit http://www.logilab.com/.

Logilab is also a strong supporter of the Free Software movement, and an
active member of the Python and Debian communities. Logilab's open 
source projects can be found on http://www.logilab.org/.
-- 
Sylvain Th?nault                               LOGILAB, Paris (France)
Formations Python, Zope, Plone, Debian:  http://www.logilab.fr/formations
D?veloppement logiciel sur mesure:       http://www.logilab.fr/services
Python et calcul scientifique:           http://www.logilab.fr/science



From aahz at pythoncraft.com  Tue Sep  5 14:04:15 2006
From: aahz at pythoncraft.com (Aahz)
Date: 5 Sep 2006 11:04:15 -0700
Subject: Programming isn't dangerous...
Message-ID: <edke6v$lpk$1@panix3.panix.com>

http://www.sfgate.com/cgi-bin/article.cgi?file=/news/archive/2006/09/05/national/a082618D20.DTL
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

I support the RKAB


From jgodoy at gmail.com  Fri Sep 29 09:32:40 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Fri, 29 Sep 2006 10:32:40 -0300
Subject: There's another Timbot on the loose!
References: <7xbqoyby2u.fsf_-_@ruckus.brouhaha.com>
Message-ID: <87odsybxxj.fsf@gmail.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:

> http://web.cecs.pdx.edu/~mpj/timbot/index.html

Should we tell them that we have the original and have a patent on him? :-) 

-- 
Jorge Godoy      <jgodoy at gmail.com>


From fredrik at pythonware.com  Mon Sep 25 11:08:01 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 17:08:01 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <ef871s$fkk$1@news.al.sw.ericsson.se>
References: <ef5hsc$8ig$1@news01.versatel.de>
	<4nn3ceFb3d5fU1@individual.net>	<ef5nop$aoh$1@news01.versatel.de>
	<ef871s$fkk$1@news.al.sw.ericsson.se>
Message-ID: <ef8rcg$evp$1@sea.gmane.org>

Frithiof Andreas Jensen wrote:

> For those kind of sites demanding registration for trivial usage (i.e. most
> sites do) I use my own domain controlled by myself - the adress is valid for the
> confirmation mail then, after I got what I came for (or after I found out that
> this site was a waste of time, which happens entirely too often), the adress is
> not valid anymore.

and for those that are too lazy for that, there's always mailinator.com 
and friends.

</F>



From jonathan-lists at cleverdevil.org  Fri Sep  8 16:46:35 2006
From: jonathan-lists at cleverdevil.org (Jonathan LaCour)
Date: Fri, 8 Sep 2006 16:46:35 -0400
Subject: Building Python Based Web Application
In-Reply-To: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
Message-ID: <0C07DB4C-52AF-40DD-8980-5BAE226F5AB2@cleverdevil.org>

James Stroud wrote:

> Basically, I want a jump start on data-base oriented web development
> with a focus on applying my python skills.
>
> Any suggestions will be greatly appreciated.

Two very popular frameworks are TurboGears (http://www.turbogears.org)
and Django (http://www.djangoproject.com/).  I have had good luck with
both in the past, and TurboGears is my current framework of choice.

There are a bunch of other frameworks out there as well, but I would
guess that these are the two most popular.

Best of luck -

--
Jonathan LaCour
http://cleverdevil.org


From ciaran at oduibhin.freeserve.co.uk  Fri Sep 29 08:20:44 2006
From: ciaran at oduibhin.freeserve.co.uk (Ciarán Ó Duibhín)
Date: Fri, 29 Sep 2006 13:20:44 +0100
Subject: Python and Win95B
References: <mailman.875.1159443572.10491.python-list@python.org>
	<451C1441.4030803@v.loewis.de>
Message-ID: <009d01c6e3c1$b0f9ec00$f2e44c51@default>

Thanks. Python 2.4.3 is fine.
Ciar?n.

----- Original Message -----
From: "Martin v. L?wis" <martin at v.loewis.de>
Newsgroups: comp.lang.python
To: "Ciar?n ? Duibh?n" <ciaran at oduibhin.freeserve.co.uk>
Sent: Thursday, September 28, 2006 7:28 PM
Subject: Re: Python and Win95B


> Ciar?n ? Duibh?n schrieb:
> > I've just installed Python 2.5 under Win95B, and when run it says "The
> > PYTHON25.DLL file is linked to missing export
> > KERNEL32.DLL.GetFileAttributesExA".
> >
> > Does Python 2.5 not run under Win95?
>
> Apparently not. I knew this would be a problem when I wrote the code
> that uses GetFileAttributes; I then forgot to fix it before the
> release was made, and nobody reported that problem during the beta
> tests. If you think it should be fixed, please report it to
> sf.net/projects/python.
>
> > If not, is there an earlier version of Python which does?
>
> This specific problem shouldn't exist in Python 2.4, and I recall
> that I tested some 2.4 release on Windows 95.
>
> Regards,
> Martin
>




From fredrik at pythonware.com  Tue Sep 26 06:12:06 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 12:12:06 +0200
Subject: I need some help with a regexp please
In-Reply-To: <4518F801.4040708@vtxmail.ch>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>	<1159205101.539477.109910@m7g2000cwm.googlegroups.com>	<5w2Sg.12714$v%4.12201@newsread1.news.pas.earthlink.net>
	<4518F801.4040708@vtxmail.ch>
Message-ID: <efaudm$19k$1@sea.gmane.org>

Frederic Rentsch wrote:

> If I may add another thought along the same line: regular expressions 
> seem to tend towards an art form, or an intellectual game. Many 
> discussions revolving around regular expressions convey the impression 
> that the challenge being pursued is finding a magic formula much more 
> than solving a problem. In addition there seems to exist some code of 
> honor which dictates that the magic formula must consist of one single 
> expression that does it all.

hear! hear!

for dense guys like myself, regular expressions work best if you use 
them as simple tokenizers, and they suck pretty badly if you're trying 
to use them as parsers.

and using a few RE:s per problem (or none at all) is a perfectly good 
way to get things done.

</F>



From simon at brunningonline.net  Wed Sep 13 11:29:26 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Wed, 13 Sep 2006 16:29:26 +0100
Subject: Unit balancing
In-Reply-To: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
References: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
Message-ID: <8c7f10c60609130829j201d467dpa06b346948174bb6@mail.gmail.com>

On 13 Sep 2006 07:47:41 -0700, AbrahamLincolnIllinois at yahoo.com
<AbrahamLincolnIllinois at yahoo.com> wrote:
> I am working with a researcher who would be very happy if he could
> include units in his calculations.  Then, if his complicated expression
> didn't result in "kg/yr" the program would stop and point out his
> error.

This what you were looking for?

<http://home.tiscali.be/be052320/Unum.html>

-- 
Cheers,
Simon B,
simon at brunningonline.net


From oliphant.travis at ieee.org  Wed Sep 20 15:28:25 2006
From: oliphant.travis at ieee.org (Travis E. Oliphant)
Date: Wed, 20 Sep 2006 13:28:25 -0600
Subject: Trouble Passing Array of Strings (using Numeric) to C Extension
	Module
In-Reply-To: <1158767555.487359.12520@m7g2000cwm.googlegroups.com>
References: <1158767555.487359.12520@m7g2000cwm.googlegroups.com>
Message-ID: <ees4nu$cbn$1@sea.gmane.org>

goetzie wrote:
> I am using Python 2.4.1 and Numeric 23.8 and running on Windows XP.  I
> am passing a Numeric array of strings (objects) to a C Extension module
> using the following python code:

Numeric 23.8 is *very* old and unsupported.   Unless you absolutely have 
to use Numeric (then use 24.2), NumPy is a better choice for new code.

With that advice aside.  Let's see...

> 
> And here is the relevent code from my C Extension module:
> 
>    static PyObject * _StringArrayIn( PyObject *self, PyObject *args )
>    {
>       PyObject *pObject;  // input array
>       PyArrayObject *pArray;  // contiguous array
>       int iCount;
>       int iStride;
>       BOOL bString;
> 
>       if ( !PyArg_ParseTuple( args, "O", &pObject ) ) return NULL;
> 
>       if ( ( pArray = ( PyArrayObject * )PyArray_ContiguousFromObject(
> pObject, PyArray_OBJECT, 1, 1 ) ) == NULL ) return NULL;
> 
>       iCount = pArray->dimensions[0];
>       iStride = pArray->strides[0];
> 
>       bString = PyString_Check( ( PyObject * )( pArray->data ) );
> 

This is the problem.:

pArray->data should be interpreted as (PyObject **) -- an array of 
PyObject *'s,  and then de-referenced to get the PyObject * present at 
the first address

So.  this should work to check that the first entry in the array is a 
string:

PyString_Check( *( ( PyObject ** )( pArray->data ) ) );


By the way, NumPy has support for true string (and unicode) arrays (as 
well as object arrays like this)...

-Travis





From jackdied at jackdied.com  Thu Sep 21 13:09:54 2006
From: jackdied at jackdied.com (Jack Diederich)
Date: Thu, 21 Sep 2006 13:09:54 -0400
Subject: itertools.count(-3)
In-Reply-To: <1158852550.993113.37030@i3g2000cwc.googlegroups.com>
References: <1158850262.700169.306140@b28g2000cwb.googlegroups.com>
	<1158852550.993113.37030@i3g2000cwc.googlegroups.com>
Message-ID: <20060921170954.GF5928@performancedrivers.com>

On Thu, Sep 21, 2006 at 08:29:11AM -0700, Carl Banks wrote:
> 
> bearophileH... at lycos.com wrote:
> > itertools.count docs say:
> > Does not currently support python long integers.
> > Note, count() does not check for overflow and will return negative
> > numbers after exceeding sys.maxint. This behavior may change in the
> > future.
> >
> > But it seems it doesn't support negative numbers too:
> >
> > >>> from itertools import count, islice
> > >>> list(islice(count(), 0, 5))
> > [0, 1, 2, 3, 4]
> > >>> list(islice(count(10), 0, 5))
> > [10, 11, 12, 13, 14]
> > >>> list(islice(count(-3), 0, 5))
> > [4294967293L, 4294967294L, 4294967295L, 0, 1]
> > >>> def count2(n=0):
> > ...     while True:
> > ...         yield n
> > ...         n += 1
> > ...
> > >>> list(islice(count2(-3), 0, 5))
> > [-3, -2, -1, 0, 1]
> >
> > If this isn't a bug, then maybe docs can tell about this too.
> 
> Seems like a regression to me.  itertools was documented as taking a
> sequence of integers, not necessarily positive integers.  It worked on
> Python 2.4.
> 
> Looking at the source (from 2.5 rc2), it looks like they accidentally
> used PyInt_FromSize_t rather than PyInt_FromSSize_t in the count
> iterator.  size_t is unsigned, of course, hence the large negative
> numbers.
> 

Nuts, that was me.  I'll fix and add some tests.

-Jack


From exarkun at divmod.com  Tue Sep 26 23:35:18 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 26 Sep 2006 23:35:18 -0400
Subject: preserving color ouput of a shell command via os.popen()
In-Reply-To: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>
Message-ID: <20060927033518.1717.953104227.divmod.quotient.61204@ohm>

On 26 Sep 2006 19:07:54 -0700, zeezlo at yahoo.com wrote:
>Hi everyone
>
>I would like to get the output of a shell process on Linux (eg, "ls
>--color=auto") run via os.popen(), filter it and then output parts of
>it while preserving any original coloring added by that process.
>
>Doing
>
>child = os.popen("ls --color=auto")
>output = child.read()
>
>results in an output string which is free of the escape sequences
>generated by ls.
>
>Is there a way to preserve them when I capture whatever the processes
>writes to stdout? I could add them manually (or use curses), but then I
>would just be duplicating the work done by ls.
>
>Thanks in advance
>
>Juergen
>

To ls, --color=auto indicates that the type of the output file descriptor
should be detected and colors included or elided depending on whether it
is likely that the output is being viewed by a human or a program.

Since you are running ls with popen, ls decides it is a program, and elides
the colors.

Try os.popen("ls --color=yes").

Jean-Paul


From istvan.albert at gmail.com  Tue Sep 12 11:10:55 2006
From: istvan.albert at gmail.com (Istvan Albert)
Date: 12 Sep 2006 08:10:55 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
Message-ID: <1158073855.390554.75750@e3g2000cwe.googlegroups.com>

metaperl wrote:
> -->  python -i
> >>> class = "algebra"
>   File "<stdin>", line 1
>     class = "algebra"
>           ^
> SyntaxError: invalid syntax

Designing a syntax to avoid all possible newbie errors is impractical
because as soon as you are finished with one iteration the new newbies
will start making different kinds of errors...

Take solace in the fact that you've been immediately notifed of the
error while its fix: renaming pass to passwd is trivial ...

i.



From nelson1977 at gmail.com  Sat Sep 16 09:18:41 2006
From: nelson1977 at gmail.com (nelson -)
Date: Sat, 16 Sep 2006 15:18:41 +0200
Subject: ANN: pyfuzzylib 0.1.3 Released
Message-ID: <f44750160609160618o23e4c6bau754fe079358c908@mail.gmail.com>

PyFuzzyLib is a library for fuzzy inference engine building. Using
pyfuzzylib you can add fuzzy logic to your programs. The program is in
it early stage of development, but it is still usable. Every sort of
feedback is appreciated!

the project homepage is

http://sourceforge.net/projects/pyfuzzylib


good afternoon,
   nelson


From maxm at mxm.dk  Tue Sep 12 07:13:10 2006
From: maxm at mxm.dk (Max M)
Date: Tue, 12 Sep 2006 13:13:10 +0200
Subject: Problems with email.Generator.Generator
In-Reply-To: <45067BFE.9010006@simplistix.co.uk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>	<ee4cam$g9a$03$1@news.t-online.com>	<4505CAA1.9090102@simplistix.co.uk>	<4505D782.3010105@simplistix.co.uk>
	<mailman.299.1158015822.5279.python-list@python.org>
	<45066B11.9040903@mxm.dk> <45067BFE.9010006@simplistix.co.uk>
Message-ID: <45069646.400@mxm.dk>

Chris Withers wrote:
> Max M wrote:
>>  From the docs:
>>
>> """
>> The payload is either a string in the case of simple message objects 
>> or a list of Message objects for MIME container documents (e.g. 
>> multipart/* and message/rfc822)
>> """
> 
> Where'd you find that? I must have missed it in my digging :-S


End of third paragraph:

http://docs.python.org/lib/module-email.Message.html


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science

Phone:  +45 66 11 84 94
Mobile: +45 29 93 42 96


From m.sloyko at gmail.com  Fri Sep 29 03:04:23 2006
From: m.sloyko at gmail.com (Maxim Sloyko)
Date: 29 Sep 2006 00:04:23 -0700
Subject: best way to get data into a new instance?
References: <j%QSg.44$1n3.417@news.tufts.edu>
	<451bda33$0$19726$88260bb3@free.teranews.com>
Message-ID: <1159513463.052438.99520@i42g2000cwa.googlegroups.com>

tobiah wrote:
[snip]
> class Employee:
>
> 	__init__(self, id):
> 		self.id = id
>
> e = Employee(32445)
>
> ... later
>
>
> e.firstname = 'foo'
> e.lastname = 'bar'
>
> ... more as the information comes about.

Personally, I think that this is not a good solution. How would the
reader of your code guess what properties your object has? If you don't
like to write too many assignments, you can at least do something like
this:

def __init__(self, id, **kw):
    self.id = id
    for name in ['first_name', 'last_name', 'age', 'salary',
'whatever']:
        self.__dict__[name] = kw.get(name, None)

--
Maxim Sloyko



From chris at simplistix.co.uk  Mon Sep 11 11:35:44 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 16:35:44 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <ee3odb$ck9$00$1@news.t-online.com>
References: <mailman.239.1157955783.5279.python-list@python.org>
	<ee3odb$ck9$00$1@news.t-online.com>
Message-ID: <45058250.9040102@simplistix.co.uk>

Peter Otten wrote:
> http://sourceforge.net/tracker/?func=detail&aid=1409455&group_id=5470&atid=105470
>> Now, is this change to Generator.py in error or am I doing something
>> wrong?
> 
> I'm not familiar enough with the email package to answer that.

I'm hoping someone around here is ;-)

>> If the latter, how can I change my code such that it works as I'd expect?
> 
> email.Generator and email.Message use cStringIO.StringIO internally, which
> can't cope with unicode. A quick fix might be to monkey-patch:

I'm not sure that's correct, but I'm happy to stand corrected.

My understanding is that the StringIO's don't mind as long as they type 
is consistent - ie: con't mix unicode and encoded strings, 'cos it 
forced python's default ascii codec to kick in and spew unicode errors.

Now, I want to know what I'm supposed to do when I have unicode source 
and want it to end up as either a text/plain or text/html mime part.

Is there a how-to for this anywhere? The email package's docs are short 
on examples involving charsets, unicode and the like :-(

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From g.brandl-nospam at gmx.net  Thu Sep 28 04:29:31 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 28 Sep 2006 10:29:31 +0200
Subject: Top and Bottom Values [PEP: 326]
In-Reply-To: <slrnehmta1.rcu.apardon@rcpc42.vub.ac.be>
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<Xns984B746409A6BOKB@199.45.49.11>
	<slrnehmta1.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <efg15c$4vr$2@news.albasani.net>

Antoon Pardon wrote:
> On 2006-09-27, OKB (not okblacke) <brenNOSPAMbarn at NObrenSPAMbarn.net> wrote:
>> Antoon Pardon wrote:
>>
>>> To begin with this already fails:
>>> 
>>>>>> for i in xrange(Top):
>>> ...   print i
>>
>>     	What do you expect this to do?  Loop forever?
> 
> Yes that is what I would expect.

For unterminating loops, use while 1:, and if you need the counter,
itertools.count().

> If someone would ask me
> to implement a function like xrange it would look something
> like the following (*)
> 
>   def xrange(start=1, stop, step=1):
> 
>     while start < stop:
>       yield start
>       start += step
> 
> Since Top is supposed to be bigger than any other value this would
> indeed loop forever. The only reason that this doesn't work with
> the builtin, is because the builtin xrange insist on its arguments
> being ints instead of allowing duck typing.

xrange() *could* be implemented as shown above, but do you realize
that it would be a severe performance hit compared to the current
implementation, which doesn't give almost all users a benefit at all?

Georg


From blue99 at interia.pl  Wed Sep 27 10:07:14 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 27 Sep 2006 07:07:14 -0700
Subject: How to change menu text with Tkinter?
In-Reply-To: <1159363771.905537.224780@d34g2000cwd.googlegroups.com>
References: <1159363771.905537.224780@d34g2000cwd.googlegroups.com>
Message-ID: <1159366033.973652.318420@i3g2000cwc.googlegroups.com>


Phil Schmidt wrote:
> I am making a little Tkinter GUI app that needs to be in several
> languages (english, french, etc.), adjustable at runtime via a menu
> pick to select the language. The only way I can see to change text in
> the menus entries is to destroy them and recreate them usiing different
> labels. This seems very clunky though, and there must be a better way.
> Can anyone offer any pointers or a short example for how to do this?

Try this:

menu.entryconfig(index, label="new_name")

HTH,
Rob



From tim.golden at viacom-outdoor.co.uk  Thu Sep  7 05:32:47 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 7 Sep 2006 10:32:47 +0100
Subject: Accessing Add/Remove Programs Details
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B41D@vogbs009.gb.vo.local>

[Phoe6]

| I have to uninstall an application and  I don't find the uninstaller,
| the option available to me is to access Add/Remove Programs, 
| select the
| application and remove from there.
| 
| I am trying to automate this task using Python:
| 1) Get the Application Name
| 2) Access the Add/Remove Program details and check if the application
| is present.
| 3) If present, then uninstall it.
| 
| I want to understand the Python Win32 modules/calls that would helpful
| to me in this direction. Are there any?  I don't want to do it as GUI
| automation using dogtail, as I want to maintain a homogeneous 
| execution
| environment of only CLI.

Not actually tried it myself, but WMI looks like a useful
candidate here:

Bit of an example (the other way round) here:
http://tgolden.sc.sabren.com/python/wmi_cookbook.html#install-a-product

and perhaps you need something like 
this (altho' obviously more sophisticated):
<code>
import wmi

appname = "Python 2.4.3"
c = wmi.WMI ()
for product in c.Win32_Product (Caption=appname):
  print product.Caption
  # product.Uninstall ()

</code>

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From deets at nospam.web.de  Mon Sep  4 12:11:39 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 04 Sep 2006 18:11:39 +0200
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<slrnefoilu.q8f.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <4m31hrF470oiU1@uni-berlin.de>

Sybren Stuvel wrote:

> km enlightened us with:
>> Is there any PEP to introduce true threading features into python's
>> next version as in java? i mean without having GIL.
> 
> What is GIL? Except for the Dutch word for SCREAM that is...

the global interpreter lock, that prevents python from concurrently
modifying internal structures causing segfaults.
 
>> when compared to other languages, python is fun to code but i feel
>> its is lacking behind in threading
> 
> What's wrong with the current threading? AFAIK it's directly linked to
> the threading of the underlying platform.

There exist rare cases (see the link from bayerj) where the GIL is an
annoyance, and with the dawn of MP-cores all over the place it might be
considered a good idea removing it - maybe. But I doubt that is something
to be considered for py2.x

Diez


From frank at chagford.com  Wed Sep 13 01:30:23 2006
From: frank at chagford.com (Frank Millman)
Date: 12 Sep 2006 22:30:23 -0700
Subject: question about including something like sqlite in python
In-Reply-To: <9tiNg.2735$No6.53971@news.tufts.edu>
References: <9tiNg.2735$No6.53971@news.tufts.edu>
Message-ID: <1158125423.634236.273100@e63g2000cwd.googlegroups.com>


John Salerno wrote:
> I was just thinking, since Python 3.0 is supposed to clean up a lot of
> the unnecessary or redundant features of Python and make other things
> more streamlined, does it seem to anyone that including SQLite goes
> against this goal?
>
> This is just me thinking out loud, mind you, but it seems like including
>   a database module (especially one that many people won't use in favor
> of MySQL or PostgreSQL, etc.) is weighing down the standard library. I
> suppose the sqlite module might still be removed in 3.0, but the
> inclusion of it at all seems a little strange (and also sort of like an
> endorsement for using it).
>
> I can see how it would be helpful to include something like hashlib, for
> example, because it streamlines the different hashing modules, and even
> ElementTree, which might be seen as the standard way to work with XML.
>
> Anyway, I'd be curious to hear other people's thoughts about this. Maybe
> I'm looking at it the wrong way.

I was very pleased to learn that pysqlite will be incorporated into
Python 2.5.
 Here's why.

I am developing a business/accounting app. As I am targeting the
mid-range, it must be inherently robust and scalable. Therefore I have
restricted the databases supported to two - PostgreSQL on Linux, and MS
Sql Server on Windows. (Yes I know that PostgreSQL works on Windows,
but I figure that if a company has a policy of using MS products, that
will include the database, and if not, a Linux server is a better
option.)

The downside is that there is quite a bit of setting up to do before
you can use it, and that is likely to be a deterrent for someone who
just wants to try it out.

With pysqlite incorporated, I can knock up a demo version that uses it,
and it will work straight out of the box. This is a major benefit. I
have not started looking into it yet, but it is definitely on my to-do
list.

Frank Millman



From chris at simplistix.co.uk  Mon Sep 11 15:29:28 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 20:29:28 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <ee4cam$g9a$03$1@news.t-online.com>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>
	<ee4cam$g9a$03$1@news.t-online.com>
Message-ID: <4505B918.6090106@simplistix.co.uk>

Peter Otten wrote:
> What past experience?
> 
>>>> StringIO.StringIO().write(unichr(128))
>>>> cStringIO.StringIO().write(unichr(128))
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> UnicodeEncodeError: 'ascii' codec can't encode character u'\x80' in position
> 0: ordinal not in range(128)

OK, I stand corrected, although I suspect the bug is actually in 
StringIO.StringIO in that it doesn't barf on unicodes.

(Python 3000 and all that)

Which again leads us back to the email package: it used to do the right 
thing from what I can see, and now it doesn't, and ends up trying to 
write a unicode to a cStringIO, which (rightly, I guess) barfs...

Barry, Barry, where are you? ;-)

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From jmcmonagle at velseis.com.au  Wed Sep  6 21:41:47 2006
From: jmcmonagle at velseis.com.au (John McMonagle)
Date: Thu, 07 Sep 2006 11:41:47 +1000
Subject: tkinter text <Key> event
In-Reply-To: <1157590442.881433.251550@d34g2000cwd.googlegroups.com>
References: <1157590442.881433.251550@d34g2000cwd.googlegroups.com>
Message-ID: <1157593307.5493.2.camel@kuepper.vels-int.com.au>

On Wed, 2006-09-06 at 17:54 -0700, Jay wrote:
> I'm having trouble with using the <Key> event with the Text object.
> When I use them together (which is a logical combination), I use this
> code:
> 
> 	textbox = Text(root, wrap="word", height=15, width=50)
> 	textbox.bind("<Key>", resolveGlyphs)
> 
> def resolveGlyphs(event):
> 	textBuf = textbox.get(1.0, END)
> 	print(textBuf)
> 
> What it prints out for me is everything except for the last character
> -- the one that triggered the event.  How can I get the entire
> contents?
> 

bind the textbox to the <KeyRelease> event because by then it has been
drawn on the Text widget.  The <Key> event is equivalent to the
<KeyPress> event

Regards,

John



-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



From bignose+hates-spam at benfinney.id.au  Mon Sep 11 19:36:41 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 12 Sep 2006 09:36:41 +1000
Subject: question about including something like sqlite in python
References: <9tiNg.2735$No6.53971@news.tufts.edu>
Message-ID: <87venu9drq.fsf@benfinney.id.au>

John Salerno <johnjsal at NOSPAMgmail.com> writes:

> I was just thinking, since Python 3.0 is supposed to clean up a lot
> of the unnecessary or redundant features of Python and make other
> things more streamlined, does it seem to anyone that including
> SQLite goes against this goal?

To my mind, "unnecessary or redundant" is more on the order of
'rfc822', since its functionality is now entirely superseded by
'email'.

> This is just me thinking out loud, mind you, but it seems like
> including a database module (especially one that many people won't
> use in favor of MySQL or PostgreSQL, etc.) is weighing down the
> standard library.

Python's philosophy is also one of "batteries included". The module
adds something useful to many people that doesn't currently exist in
Python; but if it's not needed, a module that never gets imported
won't weigh down a program.

If the byte-count size of the standard library on disk is an issue for
someone, Python is probably not the right choice for them.

-- 
 \         "My girlfriend has a queen sized bed; I have a court jester |
  `\   sized bed. It's red and green and has bells on it, and the ends |
_o__)                                      curl up."  -- Steven Wright |
Ben Finney



From nogradi at gmail.com  Tue Sep 12 08:38:04 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Tue, 12 Sep 2006 14:38:04 +0200
Subject: markup.py 1.5 - a lightweight HTML/XML generator
In-Reply-To: <ee62ot$pvh$1@sea.gmane.org>
References: <5f56302b0609041452w7eec63d8o26a1b478b94c8274@mail.gmail.com>
	<ee62ot$pvh$1@sea.gmane.org>
Message-ID: <5f56302b0609120538y49eccbaw8d1075e381871e13@mail.gmail.com>

> > A new release of markup.py is available at
> >
> > http://markup.sourceforge.net/
> >
> > The markup module is an intuitive, lightweight, easy-to-use,
> > customizable and pythonic HTML/XML generator. [...]
>
> It's more than only a bit confusing that there's also
>
> Markup: A toolkit for stream-based generation of markup for the web at
> http://markup.edgewall.org/ - basically a replacement for the Kid XHTML
> templating solution.
>
> At first I was confusing your project with the other package, which I
> was planning to give a try sooner or later.

Apparently markup.edgewall.org is redirected now to
genshi.edgewall.org and the name of that project became Genshi
recently, maybe exactly to avoid the confusion. Well, then this
problem has been taken care of :)

Thanks for the info anyway I quite frankly didn't know about this
other project. Perhaps I should add a note to the webpage clarifying
this.

Daniel


From sybrenUSE at YOURthirdtower.com.imagination  Sat Sep 23 08:22:08 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sat, 23 Sep 2006 14:22:08 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
Message-ID: <slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
> Why doesn't MySQLdb provide a function like this:

Because generally you're able to pass newlines and the like just fine.
You can even store binary data into a BLOB column.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From jstroud at mbi.ucla.edu  Fri Sep 29 00:15:39 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 29 Sep 2006 04:15:39 GMT
Subject: Using vim in server mode with ipython
Message-ID: <L51Tg.5593$TV3.3386@newssvr21.news.prodigy.com>

Hello,

I found this page:

http://projects.scipy.org/ipython/ipython/wiki/CookBook#Usinggviminservermode

But it does not seem to work for me. I set the editor in ipythonrc to 
gvim. Then I followed the instructions, step by step. To needlessly 
paraphrase the instructions:

       [0. I started gvim with "gvim --servername ipython"]
        1. I put the ipythonhooks.py in my $PYTHONPATH
        2. I cranked up ipython
        3. I imported ipythonhooks and set the hook
       [4. I started gvim with "gvim --servername ipython"]
           (if not done at step 0)
        5. I called %edit from ipython

At which point ipython took me to a new gvi window (and process).

What am I not doing that doesn't seem to be in the instructions?

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From hpsekhon at googlemail.com  Wed Sep 27 11:53:01 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Wed, 27 Sep 2006 16:53:01 +0100
Subject: Making sure script only runs once instance at a time.
Message-ID: <451A9E5D.4090301@googlemail.com>

I have written a script and I would like to ensure that the script is 
never run more than once at any given time.

What is the best way of testing and exiting if there is another version 
of this script running somewhere on this machine?

I guess what I'm asking is how to handle system processes the way I can 
in shell. I am running this on linux.


Thanks

-h

-- 
Hari Sekhon



From wirecom at wirelessmeasurement.com  Sat Sep  2 03:06:44 2006
From: wirecom at wirelessmeasurement.com (wirecom at wirelessmeasurement.com)
Date: Sat, 2 Sep 2006 08:06:44 +0100 (BST)
Subject: Linear regression in 3 dimensions
Message-ID: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>

Hi all,

I am seeking a module that will do the equivalent of linear regression in
3D to yield a best fit a plane through a set of points (X1, Y1, Z1), (X1,
Y1, Z1),... (Xn, Yn, Zn).

The resulting equation to be of the form:

 Z = aX + bY + c

The function I need would take the set of points and return a,c & c Any
pointers to existing code / modules would be very helpful.

Many thanks,
JAZZ


From lycka at carmen.se  Wed Sep 13 06:05:12 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 13 Sep 2006 12:05:12 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158078714.772319.52690@i42g2000cwa.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<1158078714.772319.52690@i42g2000cwa.googlegroups.com>
Message-ID: <ee8l4o$vln$1@wake.carmen.se>

mensanator at aol.com wrote:
> What was Richard Hipp's justification for slandering the
> writers of the SQL Language Specification?

First of all, if you read the text you quoted and understand
English, you should be able to see that the author of the
text is clearly expressing an opinion, not stating a fact.

Calling this lies or slander is just absurd.

"the authors of SQLite feel very strongly that this is a
feature"

"The authors argue that static typing is a bug in the SQL
specification"

If you think that these sentences imply some kind objective
truth that could be claimed to be a lie, then you are confused
about English or logic or both.

 > Is there anything more rude than describling the SQL Language
 > Specification as a bug that needs to be fixed?

Using "waterheadretard" in a posting subject perhaps?

Seriously, this is the first time I ever heard anyone
being religious about the SQL standard in that way.

Also, while I actually find your statement about SQL being
a bug rather funny and fitting, it's not what Hipp is saying.
He's talking about static typing, which is really only a
detail in SQL and has no bearing on the relational theories.
Equality and inequality can certainly be defined in a strict
way regardless on whether it is columns or values that have a
distinct type. The use of NULL as a permitted value for all
types mean that SQL has already relaxed the traditional type
mechanism a bit. Python, Tcl, SQLite etc goes one step further.

To cleanse you from this affliction, I suggest that you
read Date and Darwen's "A Guide to the SQL Standard".
After all, these guys are seriously involved in the SQL
standard development, and they are certainly not very
religious about it. Among their claims you can find these
pearls: "SQL in particular is very far from ideal as a
relational language", "although there are well-established
principles for the design of formal languages, there is
little evidence that SQL was ever designed in accordance
with any such principles", "Standard SQL especially is
additionally deficient in a number of respects".

Many people have claimed through the years that SQL is
broken, and that Quel was a much better language, and the
only reason that SQL killed Quel and not vice versa was the
IBM backing. Richard Hipp is hardly being controversial
in this respect...


From wescpy at gmail.com  Tue Sep 26 15:19:55 2006
From: wescpy at gmail.com (wesley chun)
Date: Tue, 26 Sep 2006 12:19:55 -0700
Subject: does anybody earn a living programming in python?
Message-ID: <78b3a9580609261219m3153d4e5jb87020637bee4d77@mail.gmail.com>

since 1997, i've been pretty much working full-time in Python:
- at yahoo, we developed yahoo!mail in python (and some C++)
- at synarc, i wrote software for doctors in python (and some C)
- at ironport, most everything is in python (and some C, PyRex). we
have a million lines in python (http://www.python.org/about/quotes/)

for the forseeable future, i plan on keeping it this way. i took a
contract which led me back to C, but as i was doing this, most of the
time i felt like i was "wasting my time," e.g., char **x =
(char**)malloc(...)... *x++ = (char*)malloc(...) ... free()...
free()... (segmentation fault)... bus error... gdb... blah blah, led
to thoughts such as, "i have better things to do with my time," "when
does this contract end?", etc. it did, however, make me more
appreciative of the C code which comprises the Python interpreter. i
sense that because i had done that (C) before and realized how Python
makes me more efficient, that i've become "spoiled" by it and am more
picky about my opportunities... anyone else feel the same way? I saw
the +1 from Aahz already.  ;-)

however, i can understand the original posters inquiry... you just
don't see too many FT positions offered that list Python as the sole
or major development language. i'm sure folks on the list either get
"found" by companies that need Python skills, or, we want to keep
those jobs to ourselves and spend time hacking sites to remove those
listings. :-)

it is also worthy to note that in general, the number of job listings
which have the word "Python" in them have risen steadily over the past
few years.  i guess the "secret" is getting out. just subscribing to
dice and monster have let me see this growth on a weekly basis.  if
you're lucky, one or two of the listings in these weekly lists will
contain positions that are pretty much Python-only.

cheers,
-- wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From felipe.lessa at gmail.com  Fri Sep  8 20:52:14 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Fri, 8 Sep 2006 21:52:14 -0300
Subject: convert loop to list comprehension
In-Reply-To: <1157762222.048058.295340@m79g2000cwm.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<1157762222.048058.295340@m79g2000cwm.googlegroups.com>
Message-ID: <c2701f5c0609081752k1d75848aq7d7828771912e0e8@mail.gmail.com>

8 Sep 2006 17:37:02 -0700, bvdp at xplornet.com <bvdp at xplornet.com>:
> 1. Using an _ is an interesting way to use a throw-away variable. Never
> would I think of that ... but, then, I don't do Perl either :)

It's a kind of convention. For example, Pylint complains for all
variables you set and don't use unless its name is "_".

> 2. Any reason for xrange() instead of range()

It's faster.

-- 
Felipe.


From johnjsal at NOSPAMgmail.com  Sat Sep 30 12:37:38 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 12:37:38 -0400
Subject: Mark Lutz Python interview
In-Reply-To: <1159561253.807662.309910@h48g2000cwc.googlegroups.com>
References: <1159554334.170062.182720@i3g2000cwc.googlegroups.com>
	<1159561253.807662.309910@h48g2000cwc.googlegroups.com>
Message-ID: <451e9dd2$0$14736$c3e8da3@news.astraweb.com>

Fuzzyman wrote:
> Mark Lutz wrote:
>> Python author and trainer Mark Lutz will be interviewed
>> on the radio show Tech Talk this Sunday, October 1st,
>> at 6PM Eastern time.  He'll be answering questions about
>> Python, his books, and his Python training services.
>>
> 
> Does he always talk in the third person ? ;-)

We'll have to listen to the interview to find out. :)


From tjreedy at udel.edu  Fri Sep 22 14:05:56 2006
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 22 Sep 2006 14:05:56 -0400
Subject: +1 QOTW
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
Message-ID: <ef18m2$acr$1@sea.gmane.org>


<olsongt at verizon.net> wrote in message 
news:1158942909.066705.245650 at e3g2000cwe.googlegroups.com...
> Did anyone else crack up when Larry Wall described python with the
> statement:
>
> Python, as the "anti-Perl," is heavily invested in maintaining Order.
>
> In the state of the onion address?
>
> http://www.perl.com/pub/a/2006/09/21/onion.html

There is also this:
'But I think the basic Perl paradigm is "Whatever-oriented programming."'







From rtw at freenet.co.uk  Thu Sep 21 15:48:23 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Thu, 21 Sep 2006 14:48:23 -0500
Subject: Working with email and mailbox module
References: <1158840271.942540.85640@d34g2000cwd.googlegroups.com>
Message-ID: <Xns9845D3B0B289CrtwfreenetREMOVEcouk@216.196.109.145>

Nirnimesh wrote in news:1158840271.942540.85640
@d34g2000cwd.googlegroups.com in comp.lang.python:

> I want to extract emails from an mbox-type file which contains a number
> of individual emails.
> 
> I tried the python mailbox and email modules individually, but I'm
> unable to combine them to get what I want. Mailbox allows me to iterate
> over all the mails but doesn't give me access the individual messages
> of a multipart mail. The email.Message module provides this, but I'm
> unable to iterate through all the messages with this module.
> 
> Here's what I want:
> 
> Get a list of all messages from mbox-file
> For each message, be able to read the header or body individually (so
> that I can apply some operation)
> 
> Does someone have experience in doing something of this sort?
> 

Not really, but this is what I came up with the other day to read
one of my newsreaders mbx files:

MBX = r"<<<-insert-path-to-your-mbx->>>"

import mailbox, email

fmbx = open( MBX, 'rb' )
mbx = mailbox.PortableUnixMailbox( fmbx,  email.message_from_file )

for i, msg in enumerate( mbx ):
  print msg.__class__
  for i in msg.keys(): # gets header names
    print i
  break

fmbx.close()


http://docs.python.org/lib/module-email.Message.html



Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From mensanator at aol.com  Fri Sep  8 19:46:03 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 8 Sep 2006 16:46:03 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
	<pan.2006.09.08.22.02.35.596359@gmx.net>
Message-ID: <1157759163.349893.233340@m73g2000cwd.googlegroups.com>

Marc 'BlackJack' Rintsch wrote:
> In <1157749692.092338.240820 at m73g2000cwd.googlegroups.com>,
> mensanator at aol.com wrote:
>
> > Ben Sizer wrote:
> >> I don't think so... it doesn't take much to say that the module
> >> implements a subset of SQL but stores ignores data types.
> >
> > So I can't just say
> >
> > WHERE qty=12
> >
> > I have to say
> >
> > WHERE (qty=12) OR (qty="12")
>
> No you just write the first and don't stuff strings into that column.
> It's your choice after all.

Not when I don't control the source of the data.
Despite the laboratory having been given a static
type definition for data deliverables, I sporadically
find text in my numeric fields.

And surely you don't think I write INSERT statements
for each of the over 500,000 records I have? The records
are inserted programatically.

Static types mean the exceptions...raise exceptions.
How am I supposed to identify the exceptions if SQLite
simply quietly converts the non-numeric data to text?

>
> > Do you know what INNER JOIN means?
> >
> > Do you know how important it is to a relational database?
> >
> > Can you explain how an INNER JOIN can even work, in theory,
> > with dynamic data types?
>
> The same as with static types!?  Where's the problem?
>
> table_a:
>
> id    name
> ----- ----------
> 42    bob
> 'foo' methusalem
> '42'  gaylord
>
> table_b:
>
> id    age
> ----- ------
> 42    23
> 'foo' 1000
> 0.5   None
>
> Join on `id`:
>
> id    name       age
> ----- ---------- ----
> 42    bob        23
> 'foo' methusalem 1000

Numbers JOINing numbers and text JOINing text doesn't illustrate
the problem. The problem is when SQLite allows bad data to be
inserted. The problem isn't that fields JOIN when they are not
supposed to, it's when they fail to JOIN when they are supposed
to.

>
> > The implications of violating the SQL Language Specification
> > are much more serious than you think.
>
> Or not so serious than you think.

Well, I can make up examples also.

Bill for customer:        Tom Smith
------------------------------------------------------------------
0003 Olsen's Standard Book of British Birds (Expurgated)  $ 99.95


Bill for customer:       Dick Smith
------------------------------------------------------------------
0002 A Sale of Two Titties                                $ 20.00
0005 David Coperfield                                     $  3.95


Bill for customer:      Harry Smith
------------------------------------------------------------------
0001 101 Ways to Start A Fight                            $ 19.95


Hmm...looks like item 4 isn't being billed to anyone. That's no
way to run a business. If I do a LEFT JOIN instead of an INNER JOIN:


Bill for customer:       None None
------------------------------------------------------------------
0004 Ethel the Aardvark Goes Quantity Surveying           $  9.99


Bill for customer:        Tom Smith
------------------------------------------------------------------
0003 Olsen's Standard Book of British Birds (Expurgated)  $ 99.95


Bill for customer:       Dick Smith
------------------------------------------------------------------
0002 A Sale of Two Titties                                $ 20.00
0005 David Coperfield                                     $  3.95


Bill for customer:      Harry Smith
------------------------------------------------------------------
0001 101 Ways to Start A Fight                            $ 19.95


I see the missing item, but still don't know who to bill it to.
What if I dumped the invoice table?

4
54
Ethel the Aardvark Goes Quantity Surveying
None
1975
9.99

3
001
Olsen's Standard Book of British Birds (Expurgated)
Olsen
None
99.95

2
032
A Sale of Two Titties
Charles Dikkens
1855
20.0

5
032
David Coperfield
Edmund Wells
1955
3.95

1
066
101 Ways to Start A Fight
some Irish gentleman
1919
19.95

Aha, it was sold to customer 54, so now I just need to dump
the customer table:

001
Tom
Smith
42

032
Dick
Smith
28

066
Harry
Smith
66

only to discover there is no customer 54! How can that happen?

invoices = [(1,'066','101 Ways to Start A Fight','some Irish
gentleman',1919,19.95), \
(2,'032','A Sale of Two Titties','Charles Dikkens',1855,20.00), \
(3,'001',"Olsen's Standard Book of British Birds
(Expurgated)","Olsen",None,99.95), \
(4,066,'Ethel the Aardvark Goes Quantity Surveying',None,1975,9.99), \
(5,'032','David Coperfield','Edmund Wells',1955,3.95)]

Oops! Forgot the quotes around the customer id for item 4.
But why didn't it become 66? Because the leading 0 made
it octal! A little static typing would have helped here.

Now, IF the same error is repeated in EVERY table that's JOINed,
THEN the dynamic typing won't be a problem. But that never happens
in practice. I populate one table and ensure it's correct. Someone
else populates the other table and screws it up so the JOIN never
works.

Sure, errors happen with static typing. After all, the values still
have to match. Dynamic typing allows for more potential errors and,
thanks to Murpy's Law, I will have a much bigger problem with data
integrity.

> 
> Ciao,
> 	Marc 'BlackJack' Rintsch



From mail at microcorp.co.za  Sat Sep  9 04:26:07 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 9 Sep 2006 10:26:07 +0200
Subject: pyserial problem: script stops reading
References: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>
	<5a8943c0609081825r203d08b5xa4a6225f2d56c337@mail.gmail.com>
Message-ID: <020101c6d3eb$da564520$03000080@hendrik>

"Frederic Wenzel" <freeed at gmail.com> wrote:


| I wrote a script on Linux that uses pyserial to read status messages
| from a serial line using readlines(). For now, it just displays what
| it gets on stdout:
|
|  17:42 | 0005 | 02 |   | 5  |Rack Abs.|  -  | --210
|  17:42 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --210
|  17:42 | 0001 | 02 |   | 5  |Rack Abs.|  -  | --210
|  17:43 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --210
|  17:43 | 0001 | 02 |   | 5  |Rack Abs.|  -  | --210
|  17:43 | 0005 | 02 |   | 5  |Rack Abs.|  -  | --210
|  17
|
| After a few hours, or sometimes days, of listening, the script stops
| in the middle of the line and does not display any further output (as
| you can see with the "17" in the last line above). That happens, even
| though I set a timeout of 10s when opening the line, and on timeout it
| displays the lines and reopens the port:
|
| ser = serial.Serial(port=1,
|                                  baudrate=1200,
|                                  rtscts=1,

if this is enabling hardware flow control  try turning it off - at 1200 baud you
should not need it


|                                  timeout=10)
|
| while 1:
|     lines = sh.readLines()
|     for line in lines:
|         print line
|     ser.close()
|     ser.open()
|
| If the script does not time out there, I am not sure what else it is
| doing. It seems to be in a wait state it does not get out of.

Sounds more and more like flow control hassle - can you lay your hands on a
break out box or a datascope?


|
| So even if the line received turned out to have some sort of error, I
| think it should time out after a while? Maybe there is some sort of
| buffer overrunning (even though the traffic is quite low: a line every
| few minutes on average)?
|
| Does anyone see any obvious error? Any hint how I can further debug the
problem?
|
| Thanks
| Fred


- HTH Hendrik




From fredrik at pythonware.com  Sat Sep 23 14:19:19 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 23 Sep 2006 20:19:19 +0200
Subject: A critique of cgi.escape
In-Reply-To: <ef37im$5hj$1@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>
Message-ID: <ef3tr6$2d0$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

> So I think the default for the second argument to cgi.escape should be
> changed to True. Or alternatively, the second argument should be removed
> altogether, and quotes should always be escaped.

you're confused: cgi.escape(s) is designed to be used for ordinary text, 
cgi.escape(s, True) is designed for attributes.  if you use the code the 
way it's intended to be used, it works perfectly fine.

> Can changing the default break existing scripts? I don't see how. It might
> even fix a few lurking bugs out there.

I'm not sure this "every time I don't immediately understand something, 
I'll write a change proposal instead of reading the library reference" 
approach is healthy, really.

</F>



From jjl at pobox.com  Wed Sep 27 17:22:46 2006
From: jjl at pobox.com (John J. Lee)
Date: Wed, 27 Sep 2006 21:22:46 GMT
Subject: How to read() twice from file-like objects (and get some data)?
References: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>
	<efek2f$mbr$1@news.albasani.net>
Message-ID: <87k63pngwp.fsf@pobox.com>

Georg Brandl <g.brandl-nospam at gmx.net> writes:

> askar.bektassov at gmail.com wrote:
> > Hello all, please correct me, if I do...
> > from ClientForm import ParseResponse
> > from urllib2 import urlopen
> > ...
> > response=urlopen(url)
> > forms=ParseResponse(response)
> > I won't be able to
> > print response.read()
> > in order to see HTML source anymore. In other words I will see only
> > an
> > empty string. Suggestions?
> 
> response = urlopen(url)
> content = response.read()
> 
> forms = ParseResponse(content)
> 
> i.e., adapt ParseResponse to accept a string, or wrap the string in a
> StringIO:
> 
> import cStringIO
> forms = ParseResponse(cStringIO.StringIO(content))

That won't work, because a StringIO does not support the 'response'
interface required of ParseResponse's argument.

You may use ClientForm.ParseFile on the StringIO instead.  Use
response.geturl() to get the URL that ParseFile wants.


John


From steve at holdenweb.com  Fri Sep 22 00:18:39 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 00:18:39 -0400
Subject: Don't use regular expressions to "validate" email addresses
In-Reply-To: <87lkoczp48.fsf_-_@benfinney.id.au>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au>
Message-ID: <eevo5f$abu$1@sea.gmane.org>

Ben Finney wrote:
> "John Machin" <sjmachin at lexicon.net> writes:
> 
> 
>>A little more is unfortunately not enough. The best advice you got was
>>to use an existing e-mail address validator. The definition of a valid
>>e-mail address is complicated. You may care to check out "Mastering
>>Regular Expressions" by Jeffery Friedl. In the first edition, at least
>>(I haven't looked at the 2nd), he works through assembling a 4700+ byte
>>regex for validating e-mail addresses. Yes, that's 4KB.  It's the best
>>advertisement for *not* using regexes for a task like that that I've
>>ever seen.
> 
> 
> The best advice I've seen when people ask "How do I validate whether
> an email address is valid?" was "Try sending mail to it".
> 
That only applies if it's a likely-looking email address. If someone 
asks me to send mail to "splurge.!#$%*&^from at thingie?><{}_)" I will 
probably assume that it isn't worth my time trying.

If the email looks syntactically correct, *then* it's worth further 
validation by trying a delivery attempt.

> It's both Pythonic, and truly the best way. If you actually want to
> confirm, don't try to validate it statically; *use* the email address,
> and check the result.  Send an email to that address, and don't use it
> any further unless you get a reply saying "yes, this is the right
> address to use" from the recipient.
> 
This is a rather scatter-shot approach. Many possibilities can be 
properly eliminated by judicious lexical checks before delivery is 
considered.

> The sending system's mail transport agent, not regular expressions,
> determines which part is the domain to send the mail to.
> 
> The domain name system, not regular expressions, determines what
> domains are valid, and what host should receive mail for that domain.
> 
> Most especially, the receiving mail system, not regular expressions,
> determines what local-parts are valid.
> 
Nevertheless, I am *not* going to try delivery to (for example) a 
non-local address that doesn't contain an "at@ sign.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From shahbazc at gmail.com  Mon Sep  4 18:39:44 2006
From: shahbazc at gmail.com (falcon)
Date: 4 Sep 2006 15:39:44 -0700
Subject: python web framework for straight sql (no ORM)?
Message-ID: <1157409584.753926.5150@p79g2000cwp.googlegroups.com>

Can someone please recommend a python web app framework which doesn't
abstract away sql in favor of python objects?

As far as I can tell, frameworks such as django, turbo gears, etc.
allow one to drop down the the sql layer, however that is not the most
effecient use of the framework.  I would like to use sql (similar to
how JSP's JSTL provides tag libraries for sql), yet not have to build
my own components such as: site administration, user registration,
authentication, rss feeds, etc. (I guess I'm thinking of a Django with
straight db-api database interface).

Is there such a framework?

Thanks.



From fredrik at pythonware.com  Wed Sep 27 15:47:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 21:47:33 +0200
Subject: How to read() twice from file-like objects (and get some data)?
In-Reply-To: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>
References: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>
Message-ID: <efekgk$p7g$1@sea.gmane.org>

askar.bektassov at gmail.com wrote:

> Hello all, please correct me, if I do...
> 
> from ClientForm import ParseResponse
> from urllib2 import urlopen
> ...
> response=urlopen(url)
> forms=ParseResponse(response)
> 
> I won't be able to
> 
> print response.read()
> 
> in order to see HTML source anymore. In other words I will see only an
> empty string. Suggestions?

the server is sending you a stream of bytes; there's no way to "rewind" 
that without issuing another request.

if you want to use the data multiple times, you'll have to save it in
a buffer, and parse it from there (use StringIO to wrap a string in a 
file-like object).

</F>



From knipknap at gmail.com  Tue Sep 19 04:52:31 2006
From: knipknap at gmail.com (Samuel)
Date: 19 Sep 2006 01:52:31 -0700
Subject: Creating database structures in a portable way
In-Reply-To: <450f122f$0$905$636a55ce@news.free.fr>
References: <1158594419.579160.194570@m73g2000cwd.googlegroups.com>
	<450ec289$0$1804$636a55ce@news.free.fr>
	<1158602201.926509.228420@k70g2000cwa.googlegroups.com>
	<450f122f$0$905$636a55ce@news.free.fr>
Message-ID: <1158655951.310005.50840@k70g2000cwa.googlegroups.com>

> > SQLAlchemy looks pretty good, but unfortunately apparently requires
> > shell access for installation (or at least, I have not found any other
> > solution covered in the docs), which I can not use.
>
> It doesn't use binaries AFAIK, so just copying should work as well.

Indeed, from browsing the package it seems like a pure Python solution.
I installed it (but didn't test it yet because I have no code to drive
it yet).

> > Rewriting the schema is possible (I only want to keep it separated from
> > the code),
>
> Why ? Isn't your code supposed to use it ?

It often makes sense to use meta languages to enforce clean separation
of logic. In my experience it is helpful to separate the database logic
from the application logic.

> A first point is that the DB-API doesn't hide the differences between
> various SQL dialects.

I see.

> A second point is that DB-API requires you to
> embed SQL statements as strings, while SQLAlchemy allow you to build
> your SQL queries in pure Python.

I'd rather not rewrite every single Sql statement into Python, since it
would

1. replace code that has already proven to work by something untested.
2. add yet another abstraction, at the cost of performance.

Luckily, SQLAlchemy also lets me use SQL statements directly.

> (and FWIW, if using an existing DB, you
> don't even have to describe the schema a second time to use it). Well,
> just start playing with it, and I really doubt you'll want to come back
> to the embedded hand-written SQL !-)

If I ever write something from scratch I'll use it.

Thanks for your comments, this was very helpful.

-Samuel



From cginboston at hotmail.com  Tue Sep 26 12:53:40 2006
From: cginboston at hotmail.com (Chaz Ginger)
Date: Tue, 26 Sep 2006 12:53:40 -0400
Subject: identifying new not inherited methods
In-Reply-To: <mailman.713.1159288933.10491.python-list@python.org>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
	<mailman.713.1159288933.10491.python-list@python.org>
Message-ID: <45195B14.3020609@hotmail.com>

Steve Holden wrote:
> malkarouri at gmail.com wrote:
>> Hi,
>>
>> I am writing a library in which I need to find the names of methods
>> which are implemented in a class, rather than inherited from another
>> class. To explain more, and to find if there is another way of doing
>> it, here is what I want to do: I am defining two classes, say A and B,
>> as:
>>
>> class A(object):
>>     def list_cmds(self):
>>         'implementation needed'
>>         ?
>>     def __init__(self):
>>     ... (rest of class)
>>
>> class B(A):
>>     def cmd1(self, args):
>>         pass
>>     def cmd2(self, args):
>>         pass
>>
>> I need an implementation of list_cmds in A above so that I can get a
>> result:
>>
>>
>>>>> b=B()
>>>>> b.list_cmds()
>>
>> ['cmd1','cmd2']                    #order not important
>>
>> I will be happy if anybody can point to me any way of doing it, using
>> class attributes, metaclasses or otherwise. What I don't want to do is
>> modifying class B, which contains just the cmds, if possible.
>>
>> Many thanks in advance.
>>
> $ cat test01.py
> class A(object):
>     def list_cmds(self):
>         """return callable attributes from
>            subclasses not present in main class."""
>         Amethods = [m for m in dir(A) if callable(getattr(A, m))]
>         return [m for m in dir(self.__class__)
>                 if callable(getattr(self.__class__, m))
>                    and m not in Amethods]
>     def __init__(self):
>         pass
> 
> class B(A):
>     def cmd1(self, args):
>         pass
>     def cmd2(self, args):
>         pass
> 
> print "A additionals:", A().list_cmds()
> print "B additionals:", B().list_cmds()
> 
> 
> sholden at bigboy ~
> $ python test01.py
> A additionals: []
> B additionals: ['cmd1', 'cmd2']
> 
> sholden at bigboy ~
> $
> 
> Hope this helps.
> 
> regards
>  Steve

You don't really want to use dir(A), since this will not pick up all the 
  classes that make up A.  Don't you want to use the MRO instead?

Chaz



From fredrik at pythonware.com  Fri Sep 22 05:53:10 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 22 Sep 2006 11:53:10 +0200
Subject: Tkinter button not working as expected
References: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>
Message-ID: <ef0bq7$1gm$1@sea.gmane.org>

vagrantbrad at yahoo.com wrote:

> I've created a short test program that uses tkFileDialog.askdirectory
> to help the user input a path into a tk entry widget.  The problem I'm
> having is that when I run the code as listed below, the getPath
> function is called when the program initially runs, not when the button
> is pressed.

the right side of an assignment is always evaluated before it is assigned, so

    self.button["command"] = self.getPath(t)

will call self.getPath(t) and then assign the return value to button["command"].
quite obvious, if you think about it, right ?

the easiest way to fix this is to add a local function that calls getPath, and
use that as the button callback:

    def callback():
        self.getPath(t)
    self.button["command"] = callback

(if you want, you can inline the getPath code in the callback).

</F> 





From frank at chagford.com  Fri Sep  8 04:05:27 2006
From: frank at chagford.com (Frank Millman)
Date: 8 Sep 2006 01:05:27 -0700
Subject: Question about subclassing - version 2
In-Reply-To: <1157701901.506736.45610@p79g2000cwp.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
Message-ID: <1157702727.358576.24280@m79g2000cwm.googlegroups.com>


bearophileHUGS at lycos.com wrote:
> Frank Millman, just a short note, more expert people can give you
> better answers. There aren't abstract classes in Python. They are all
> concrete. You may have classes with undefined methods (they may raise
> NotImplementedError).
> Multiple inheritance isn't supported by Java and Ruby, but it is
> supported by C++ and Python, so you can use it in Python.
> There are also ways of mixing methods. You may define methods, and then
> lists of methods to add to your classes.
>
> Bye,
> bearophile

I use the term 'abstract class' in the abstract sense :-)

Say I have three classes where 90% of the attributes and methods are
common. It makes sense to create a base class with these attributes and
methods, and turn each of the three classes into a subclass which
inherits from the base class and overrides the bits that are unique to
each one.

This is what I call an abstract class. Maybe there is a more correct
term.

Frank



From felipe.lessa at gmail.com  Fri Sep  8 20:46:27 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Fri, 8 Sep 2006 21:46:27 -0300
Subject: Best Middle Tier Architechure?
In-Reply-To: <WSmMg.11141$QM6.2982@bgtnsc05-news.ops.worldnet.att.net>
References: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
	<mailman.166.1157717117.5279.python-list@python.org>
	<WSmMg.11141$QM6.2982@bgtnsc05-news.ops.worldnet.att.net>
Message-ID: <c2701f5c0609081746x13062534r8dfcf431ad6ea721@mail.gmail.com>

2006/9/8, Butternut Squash <rxrx at yamama.com>:
> I have to support multiple applications using different schema and
> databases.  Would like to present as much as a unified interface as
> possible.

I'd recomend CORBA as it supports multiple platforms and languages.
SOAP and XML-RPC can be used as well, but I'm afraid performance can
be a problem if a lot of calls are made or big/complex objects are
transfered.

-- 
Felipe.


From http  Thu Sep  7 20:07:00 2006
From: http (Paul Rubin)
Date: 07 Sep 2006 17:07:00 -0700
Subject: Extracting text from a string
References: <R51762242.230.8556.1@mx-extra> <B51771647.363.8455.1@mx-extra>
	<mailman.144.1157673777.5279.python-list@python.org>
Message-ID: <7x3bb3b4rf.fsf@ruckus.brouhaha.com>

"Tim Williams" <tim at tdw.net> writes:
> or even more terse,
> >>> print '\n'.join([i for i in s.splitlines ()[1::2]])

I think it's more robust to use a regexp.

  prices = re.findall('\$\d+\.\d\d', s)
  print '\n'.join(prices)


From steve at holdenweb.com  Mon Sep 11 11:05:31 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 16:05:31 +0100
Subject: efficient text file search.
In-Reply-To: <1157986083.091290.197570@m73g2000cwd.googlegroups.com>
References: <NYOBGCEXSMTP20WO6hm000003b5@nyobgcexsmtp20.uswin.ad.vzwcorp.com>	<mailman.249.1157979719.5279.python-list@python.org>
	<1157986083.091290.197570@m73g2000cwd.googlegroups.com>
Message-ID: <ee3tui$7gm$1@sea.gmane.org>

noro wrote:
> Bill Scherer wrote:
> 
>>noro wrote:
>>
>>
>>>Is there a more efficient method to find a string in a text file then:
>>>
>>>f=file('somefile')
>>>for line in f:
>>>   if 'string' in line:
>>>        print 'FOUND'
>>>
>>>?
>>>
>>>BTW:
>>>does "for line in f: " read a block of line to te memory or is it
>>>simply calls f.readline() many times?
>>>
>>>thanks
>>>amit
>>>
>>>
>>
>>If your file is sorted by some key in the data, you can build a very
>>fast binary search with mmap in Python.
> 
> 
 > can you add some more info, or point me to a link, i haven't found
 > anything about binary search in mmap() in python documents.
 >
 > the files are very big...
 >
[please don't "top-post": add your latest comments at the end so the 
story reads from the beginning].

I think this is probably not going to help you. A binary search is only 
useful if you want to locate a value in an ordered list. Since your 
original posting made it seem like the text you are looking for could 
appear in any position in any line of the file a binary search doesn't 
do you any good at all (in fact it complicates things and slows them 
down unnecessarily) because you'd still need to look at all lines.

Plus, if the lines are of variable length then you'd need to start by 
creating an index of them, meaning you'd have to go right through the 
file anyway.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From joshbloom at gmail.com  Fri Sep 22 17:52:37 2006
From: joshbloom at gmail.com (joshbloom at gmail.com)
Date: 22 Sep 2006 14:52:37 -0700
Subject: python-Levenshtein-0.10.1
Message-ID: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>

Hi Guys,

I've been using this c implementation
http://trific.ath.cx/resources/python/levenshtein/ on a windows box and
it works great.

I'd like to move my app over to linux machine and am wondering if
someone could help me understand how to 'install' this extension on a
linux machine?

Thanks, 
Josh



From shejo284 at gmail.com  Thu Sep 28 08:37:24 2006
From: shejo284 at gmail.com (Sheldon)
Date: 28 Sep 2006 05:37:24 -0700
Subject: Continuing after error
Message-ID: <1159447044.885212.300950@i3g2000cwc.googlegroups.com>

Hi,

Does anyone know if it is possible to resume the execution of a program
after it stops at an error in the code and the error was corrected?

Sincerely,
Sheldon



From fakeaddress at nowhere.org  Tue Sep  5 10:46:43 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Tue, 05 Sep 2006 14:46:43 GMT
Subject: threading support in python
In-Reply-To: <1157384616.635503.309750@e3g2000cwe.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<mailman.10337.1157383940.27775.python-list@python.org>
	<1157384616.635503.309750@e3g2000cwe.googlegroups.com>
Message-ID: <n5gLg.21210$kO3.5380@newssvr12.news.prodigy.com>

bayerj wrote:

> Then you can use POSH [1] to share data and objects.

Do you use POSH? How well does it work with current Python?
Any major gotchas?

I think POSH looks like a great thing to have, but the latest
version is an alpha from over three years ago. Also, it only
runs on *nix systems.


-- 
--Bryan


From onurb at xiludom.gro  Thu Sep 21 08:14:59 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 21 Sep 2006 14:14:59 +0200
Subject: Can I inherit member variables?
In-Reply-To: <mailman.400.1158835802.10491.python-list@python.org>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>	<eetnu9$gj7$1@online.de>	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>
	<mailman.400.1158835802.10491.python-list@python.org>
Message-ID: <45128244$0$641$636a55ce@news.free.fr>

Gabriel Genellina wrote:
(snip)
> When you construct an object instance, it is of a certain type from that
> precise moment, and you can't change that afterwards.

Err... Actually, in Python, you can. It's even a no-brainer.

(snip)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From martin at v.loewis.de  Thu Sep 14 00:04:53 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 14 Sep 2006 06:04:53 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <1158193720.389813.155170@b28g2000cwb.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
	<ee98cn$qhp$1@foggy.unx.sas.com>
	<mailman.40.1158163197.10491.python-list@python.org>
	<1158164270.297334.209790@d34g2000cwd.googlegroups.com>
	<45083752.5050005@v.loewis.de>
	<1158193720.389813.155170@b28g2000cwb.googlegroups.com>
Message-ID: <4508D4E5.7090701@v.loewis.de>

John Machin schrieb:
> Hi Martin, I do hope you don't regret opening Pandora's box :-)
> 
> Does the following look about right?

Technically, yes. I wonder whether it will generate unreadable error
messages, though (one would have to try).

> I was somewhat bemused by the limit of 200 bytes on the module name in
> the error message-- I woild have thought about 20 was more appropriate.
> Sorry but I can't test this (Windows box, don't have whatever version
> of C compiler is necessary to compile Python).

I'm not sure where this limit comes from, either. This would need to
be researched to find out whether it is just nonsensical, or, if
there is a rationale for it, whether it applies to the path name as
well.

Regards,
Martin


From paddy3118 at netscape.net  Sun Sep 10 05:13:29 2006
From: paddy3118 at netscape.net (Paddy)
Date: 10 Sep 2006 02:13:29 -0700
Subject: Function metadata (like Java annotations) in Python
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
Message-ID: <1157879609.386406.278450@b28g2000cwb.googlegroups.com>

oripel wrote:
> Hi,
>
> I'm trying to attach some attributes to functions and methods, similar
> to Java annotations and .NET attributes.
> I also want to use a convenient decorator for it, something along the
> lines of
>
> @attr(name="xander", age=10)
> def foo():
>   ...
>
> Assigning attributes to the function will work, as will assigning keys
> and values to a dictionary in an attribute. But if there are more
> decorators in the way, this could fail:
>
> @onedec
> @attr(...)
> @twodec
> def foo():
>   ...
>
> Given 'foo' now, how do I find the attributes?
>
> Assigning to a global attribute registry (some interpreter-global
> dictionary), although less desirable, might have been acceptable, but
> then how do I identify the function after it's been wrapped in more
> decorators?
>
> Also, it may be nice to have the following work as well:
>
> @attr(name="Xander")
> @attr(age=10)
> @somedec
> @attr(hobby="knitting")
> def foo():
>   ...
>
>
> Any thoughts? Am I rehashing something old that my search skills didn't
> uncover?
>
> Thanks!
> Ori.

I wrote up my investigation into function attributes and decorators on
my blog:

http://paddy3118.blogspot.com/2006/05/python-function-attributes.html
http://paddy3118.blogspot.com/2006/05/function-attributes-assigned-by.html

What do you think?

- Paddy.



From http  Wed Sep 20 04:42:41 2006
From: http (Paul Rubin)
Date: 20 Sep 2006 01:42:41 -0700
Subject: byte count unicode string
References: <mailman.315.1158736972.10491.python-list@python.org>
	<1158737974.490027.71860@k70g2000cwa.googlegroups.com>
	<1158739949.355384.178660@e3g2000cwe.googlegroups.com>
	<Xns9844612827EEAduncanbooth@127.0.0.1>
Message-ID: <7xzmcv2ake.fsf@ruckus.brouhaha.com>

Duncan Booth <duncan.booth at invalid.invalid> writes:
> I guess you could invent something like inserting a string into a database 
> which has fixed size fields, silently truncates fields which are too long 
> and stores the strings internally in utf-8 but only accepts ucs-2 in its 
> interface. Pretty far fetched, but if it exists I suspect that an extra 
> utf-8 encoding here or there is the least of your problems.

More direct would be to add an option to the http parser to return the
utf8 received from the browser as a byte array still in utf8, instead
of decoding it so that it needs to be re-encoded before insertion into
the database.  A lot of the time, the application doesn't need to look
at the string anyway.


From steve at holdenweb.com  Tue Sep 12 08:22:26 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 13:22:26 +0100
Subject: Clarify Regex in Python.
In-Reply-To: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
Message-ID: <ee68on$e8t$1@sea.gmane.org>

cooldudevamsee at gmail.com wrote:
> After may frustrated attempts I came to know that  "match" function in
> python re package actually start the matchs at the begining of the
> subject, where "search" will find the given pattern any where in the
> subject.
> 
> My Problem is, I want to know how can I force match functions to match
> the pattern any location in the subject. i.e I want to turn off before
> said behaviour.
> 
> 
> Thanks In advance.
> 
Erm, is there some specific reason why you can't just use the search 
method? Why does it *have* to be match()?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From faulkner612 at comcast.net  Mon Sep 25 17:38:17 2006
From: faulkner612 at comcast.net (faulkner)
Date: 25 Sep 2006 14:38:17 -0700
Subject: python gtk based file manager
In-Reply-To: <mailman.594.1159209259.10491.python-list@python.org>
References: <mailman.594.1159209259.10491.python-list@python.org>
Message-ID: <1159220297.275704.71600@e3g2000cwe.googlegroups.com>

http://www.google.com/search?q=emelfm2
awesome file manager written in C using gtk.
i've been meaning to write something like emelfm in pygtk, but emelfm
already exists...

Fabian Braennstroem wrote:
> Hi,
>
> I am looking for a file manager based on pygtk. It seems
> that there does not exist any!? Maybe, someone has a hint or
> already some starting code lines for such a 'thing'!?
> 
> Greetings!
>  Fabian



From michele.petrazzoDELETE at DELETEunipex.it  Fri Sep 29 08:22:55 2006
From: michele.petrazzoDELETE at DELETEunipex.it (Michele Petrazzo)
Date: Fri, 29 Sep 2006 12:22:55 GMT
Subject: Execute external code and get return value
Message-ID: <ze8Tg.128326$_J1.881759@twister2.libero.it>

Hi,
I want to execute an external code, that become from a text file (pe),
call a function inside it and get its return value:

# ext_code.txt

def funct2Call():
  return True

# test.py

sourcecode = open("ex_code.txt").read()
comp_code = compile(sourcecode, "My_test", "exec")

#do something like this
return_value = comp_code.funct2Call()

But I can't...

I find this:
http://tinyurl.com/nwbpk
	
but here, it call from the external code a function inside my code. I
want the opposite!
Is there a solution for do this?

Thanks,
Michele


From adrian.neagu at scansoft.com  Wed Sep 20 08:43:37 2006
From: adrian.neagu at scansoft.com (AdrianNg3)
Date: 20 Sep 2006 05:43:37 -0700
Subject: How to measure memory footprint of Python objects?
References: <mailman.327.1158753978.10491.python-list@python.org>
	<7xu032ag95.fsf@ruckus.brouhaha.com>
Message-ID: <1158756217.760818.188490@k70g2000cwa.googlegroups.com>

Paul Rubin wrote:
> See the docs for the gc module.

This is the first place I've checked. I see no useful info there about
the actual size of the objects (bytes occupied in memeory).

The closest thing to what I need is get_objects( ). Then I have to go
over the list
and do something with the objects. Wouldn't that be too slow?

Thanks anyway,
Adrian.



From neoedmund at gmail.com  Thu Sep  7 22:49:37 2006
From: neoedmund at gmail.com (neoedmund)
Date: 7 Sep 2006 19:49:37 -0700
Subject: help with unicode email parse
In-Reply-To: <1157627312.123904.76620@m73g2000cwd.googlegroups.com>
References: <1157378961.284028.55840@m79g2000cwm.googlegroups.com>
	<1157416665.006114.63170@h48g2000cwc.googlegroups.com>
	<1157425054.822558.228950@74g2000cwt.googlegroups.com>
	<1157465231.163700.279630@h48g2000cwc.googlegroups.com>
	<1157465543.794948.79000@i3g2000cwc.googlegroups.com>
	<1157471114.594330.123480@m73g2000cwd.googlegroups.com>
	<1157471386.436178.151310@m73g2000cwd.googlegroups.com>
	<1157510240.237102.202190@h48g2000cwc.googlegroups.com>
	<1157526684.506238.192580@i3g2000cwc.googlegroups.com>
	<1157601601.965201.95710@e3g2000cwe.googlegroups.com>
	<1157604050.886228.267330@p79g2000cwp.googlegroups.com>
	<1157627312.123904.76620@m73g2000cwd.googlegroups.com>
Message-ID: <1157683777.315563.95960@d34g2000cwd.googlegroups.com>

thank you John and Diez.
i found
fn = "%s/%s-%s.mail"%("d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95' )
is ok
fn = "%s/%s-%s.mail"%(u"d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95' )
results:
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 0:
ordinal not in range(128)
So "str"%(param) not accept unicode, only accept byte array?


John Machin wrote:
> neoedmund wrote:
> > i want to get the subject from email and construct a filename with the
> > subject.
> > but tried a lot, always got error like this:
> > UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 4:
> > ordinal not in range(128)
> >
> >
> > 	msg = email.message_from_string( text )
> > 	title = decode_header( msg["Subject"] )
> > 	title= title[0][0]
> > 	#title=title.encode("utf8")
>
> Why is that commented out?
>
> > 	print title
> > 	fn = ""+path+"/"+stamp+"-"+title+".mail"
> >
> >
> > the variable "text"  come from sth like this:
> > ( header, msg, octets ) = a.retr( i )
> > text= list2txt( msg )
> > def list2txt( l ):
> > 	return reduce( lambda x, y:x+"\r\n"+y, l )
> >
> > anyone can help me out? thanks.
>
> Not without a functional crystal ball.
>
> You could help yourself considerably by (1) working out which line of
> code the problem occurs in [the traceback will tell you that] (2)
> working out which string is being decoded into Unicode, and has '\xe9'
> as its 5th byte. Either that string needs to be decoded using something
> like 'latin1' [should be specified in the message headers] rather than
> the default 'ascii', or the code has a deeper problem ...
>
> If you can't work it out for yourself, show us the exact code that ran,
> together with the traceback. If (for example) title is the problem,
> insert code like:
>     print 'title=', repr(title)
> and include that in your next post as well.
> 
> HTH,
> John



From john106henry at hotmail.com  Wed Sep 27 19:17:57 2006
From: john106henry at hotmail.com (John Henry)
Date: 27 Sep 2006 16:17:57 -0700
Subject: windev vs python SOS
In-Reply-To: <nXzSg.195$nn3.31@nntpserver.swip.net>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <1159399077.248154.160800@d34g2000cwd.googlegroups.com>

I don't know what windev is but presonally, I found Python to be
incredibly productive.

BTW: I recommend that you look into PythonCard.  It sits on top of
wxpython and I found it to be a very productive GUI tool.

st?phane bard wrote:
> hello, my boss ask me to prefer windev to python.
> I have to argue
>
>   - python work on multiple platform (linux, mac, windows)
> 	A good point but it didn't interest him. Because
> 	we want to choose a language for prototyping.
> 	So multi platform is not enough.
>
>   - python and windev are fast to develop
>
>   - windev as a good IDE, python? boa-constructor is ok with wxpython
>
>   - python is open source (that's not an argument for my boss, sorry
> it's 	a boss ...)
> 
> any idea for a strong argument ?



From deets at nospam.web.de  Fri Sep 29 05:36:07 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 29 Sep 2006 11:36:07 +0200
Subject: Recursive descent algorithm able to parse Python?
References: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>
	<4o2ugcFcm4npU1@uni-berlin.de> <efhn24$fia$1@lust.ihug.co.nz>
Message-ID: <4o47o7Fcu386U1@uni-berlin.de>

Lawrence D'Oliveiro wrote:

> In message <4o2ugcFcm4npU1 at uni-berlin.de>, Diez B. Roggisch wrote:
> 
>> seberino at spawar.navy.mil schrieb:
>>> I'm a compiler newbie and curious if Python grammar is able to
>>> be parsed by a recursive descent parser or if it requires
>>> a more powerful algorithm.
>> 
>> I might be mistaken, but isn't recursive descent one of the more
>> powerful parsing techniques - for the price of non-linearity and even
>> potentially non-termination?
> 
> No, you're thinking of LR(k) bottom-up parsers. Recursive descent is a

No, I'm not.

> top-down parser--might be the same thing as LL(1), I'm not sure. It's easy
> to implement and easy to understand, to the point where there is strong
> pressure on programming-language designers to make sure their languages
> can be parsed with recursive descent.

http://en.wikipedia.org/wiki/Recursive_descent_parser

"""
Recursive descent with backup is a technique that determines which
production to use by trying each production in turn. Recursive descent with
backup is not limited to LL(k) grammars, but is not guaranteed to terminate
unless the grammar is LL(k). Even when they terminate, parsers that use
recursive descent with backup may require exponential time.
"""

I have to admit that I have difficulties to compare LR(k) to recursive
descent, but the fact that the latter contains backtracking makes it at
least more powerful than LL(k)

Diez


From jstroud at mbi.ucla.edu  Wed Sep 27 06:33:50 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 10:33:50 GMT
Subject: What's up with site.Quitter?
In-Reply-To: <mailman.770.1159335196.10491.python-list@python.org>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>	<mailman.769.1159333097.10491.python-list@python.org>	<wGnSg.5103$TV3.118@newssvr21.news.prodigy.com>
	<mailman.770.1159335196.10491.python-list@python.org>
Message-ID: <issSg.16761$IA.13274@newssvr11.news.prodigy.com>

Fredrik Lundh wrote:
> James Stroud wrote:
> 
>> Yes, but I was speaking more consistency than convenience (see above 
>> for what I mean by consistency).
> 
> why would having access to a type object for exit/quit help you do 
> proper syntax coloring, btw?  if you want to generate a syntax table, 
> wouldn't it be better to use things like
> 
>     issubclass(obj, Exception)
> 
> and
> 
>     callable(obj)
> 
> etc. ?

Actually, my code has the first test and the second is a consequence of 
my checking for types.BuiltinFunctionType. Perhaps the way you suggest 
is less cumbersome. Food for thought.

> (__builtins__ is an implementation detail, btw;

OK. I assumed that __builtins__ are somehow sacred regarding what would 
be reserved. Perhaps not. However, I used __builtins__ to generate a 
list of reserved words and used types for syntax checking.

 > if you want a list of
 > the builtins, import __builtin__ (no plural) and do dir on that).
 >
 > </F>

cPython, at least, gives this equivalence:

py> import __builtin__
py> __builtins__ is __builtin__
True

I assume, as you suggest, that one may not depend on this equivalence 
for all implementations.

Thank you for your suggestions,
James


From steve at holdenweb.com  Wed Sep  6 23:01:24 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 04:01:24 +0100
Subject: iso creation for python backup script
In-Reply-To: <c5b438120609061942w7f23b5f1i18b54b30de33ccd4@mail.gmail.com>
References: <c5b438120609061942w7f23b5f1i18b54b30de33ccd4@mail.gmail.com>
Message-ID: <edo20v$38e$1@sea.gmane.org>

Ryan Krauss wrote:
> I would like to write a python script to backup my wife's important
> stuff to a CD or DVD.  She is running windows.  Is there an easy way
> to create as iso image file using python or some other way to use
> python to create (and burn?) a cd?  I am open to other free cd backup
> tools that work in windows if there are any suggestions, but I want a
> lot of flexibility about what goes into the backup (which is why I
> would prefer to do it in python and have full control).
> 
I'll leave others to answer the Python question, but I use Burn4Free 
(http://www.burn4free.com/) - this product wil also write ISO images 
should you choose to create them in Python.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rganesan at myrealbox.com  Fri Sep  8 06:14:23 2006
From: rganesan at myrealbox.com (Ganesan Rajagopal)
Date: Fri, 08 Sep 2006 15:44:23 +0530
Subject: mobile phone app
References: <edrc9j$u9f$1@news4.fe.internet.bosch.com>
Message-ID: <xkvhbqpqd5s0.fsf@grajagop-lnx.cisco.com>

>>>>> Aravind  <aravindmail007 at yahoo.co.in> writes:

> Can anyone tell me if python can be used for developing mobile phone apps as
> Java ? If yes, any comparisons ? Also pls tell me where i can get the tools
> and tutorials for the same...

Not in the same league as J2ME, but in some restricted cases, yes. See

http://forum.nokia.com/python

-- 
Ganesan Rajagopal



From mr.porteiro.head at gmail.com  Fri Sep 22 16:15:02 2006
From: mr.porteiro.head at gmail.com (mr.porteiro.head at gmail.com)
Date: 22 Sep 2006 13:15:02 -0700
Subject: no-installation version of python
Message-ID: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>

Is there a stand-alone version of python out there that I can package
with my scripts so that I don't have to bother with something like
py2exe?



From cjlesh at gmail.com  Tue Sep 12 09:47:44 2006
From: cjlesh at gmail.com (cjl)
Date: 12 Sep 2006 06:47:44 -0700
Subject: Running python from a usb drive
In-Reply-To: <1158065581.743924.288930@i42g2000cwa.googlegroups.com>
References: <mailman.340.1158063541.5279.python-list@python.org>
	<1158064478.044626.53180@e3g2000cwe.googlegroups.com>
	<1158065581.743924.288930@i42g2000cwa.googlegroups.com>
Message-ID: <1158068864.830813.175710@e3g2000cwe.googlegroups.com>

John:

> Congratulations. Now: how much time have you spent, and how much per
> hour are you worth? hours * dollars_per_hour < GBP_to_USD(4.99) ???

Since you mention it, I am currently earning about $200 an hour (when
I'm working), and I spent about 3 hours on this, so this cost me about
$600. I think 4.99 GBP (the price of movable python) translates to
about 9 or 10 dollars. So all told this cost me about $590.

Well worth it at twice the price, because I did it myself, I learned
from doing it, others my learn from it, and it is "open", unlike
movable python.

Any ideas about how to set file type associations without writing to
the registry?

Thanks again,
CJL



From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:15:22 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:15:22 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<mailman.570.1159194107.10491.python-list@python.org>
	<efa7ff$pr2$2@lust.ihug.co.nz>
	<1159253834.519665.109770@m7g2000cwm.googlegroups.com>
Message-ID: <efak0g$hbo$2@lust.ihug.co.nz>

In message <1159253834.519665.109770 at m7g2000cwm.googlegroups.com>, Dan
Bishop wrote:

> Lawrence D'Oliveiro wrote:
>> In message <mailman.570.1159194107.10491.python-list at python.org>, Fredrik
>> Lundh wrote:
>>
>> > Max M wrote:
>> >
>> >> It also makes the  escaped html harder to read for standard cases.
>> >
>> > and slows things down a bit.
>> >
>> > (cgi.escape(s, True) is slower than cgi.escape(s), for reasons that are
>> > obvious for anyone who's looked at the code).
>>
>> What you're doing is adding to the reasons why the existing cgi.escape
>> function is stupidly designed and implemented. The True case is by far
>> the most common, so to make that the slow case, as well as being the
>> non-default case, is doubly brain-dead.
> 
> How exactly would you make s = s.replace('"',"&quot;") faster than
> *not* doing the replacement?

Wrong answer. Correctness comes first, then we worry about efficiency.


From ldo at geek-central.gen.new_zealand  Sat Sep 23 08:06:01 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 00:06:01 +1200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net>
	<1158959361.458232.278660@h48g2000cwc.googlegroups.com>
Message-ID: <ef37tf$5hj$4@lust.ihug.co.nz>

In message <1158959361.458232.278660 at h48g2000cwc.googlegroups.com>,
MonkeeSage wrote:

> I don't really see anything wrong with creating a custom class for
> evaluating those kinds of logical statements. It does make the code for
> statements more concise and easy to follow (with less binding
> ambiguity).

Why not express everything in Conjunctive Normal Form?


From MonkeeSage at gmail.com  Sat Sep 23 20:02:10 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 17:02:10 -0700
Subject: webbrowser module's Firefox support
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
	<1159053936.813103.38840@d34g2000cwd.googlegroups.com>
Message-ID: <1159056130.721134.145060@m73g2000cwd.googlegroups.com>

Dustan wrote:
> >>> cont=webbrowser._browsers['firefox'][1]

Why not use the api? cont=webbrowser.get('firefox')

> ValueError: close_fds is not supported on Windows platforms
>
> Looking in the docs on subprocess.Popopen
> (http://docs.python.org/lib/node529.html), it says "If close_fds is
> true, all file descriptors except 0, 1 and 2 will be closed before the
> child process is executed. (Unix only)". I have to be frank; I have no
> idea what this means. What should I do to fix this?

It just means that on *nix there is an option to close all open file
handles except stdin, out and err before the browser is called. I'm
thinking that mabye get() does an OS check to see how to call
subprocess.Popen, and you effectively bypassed it by using the
lower-level _browsers attribute. But I could be wrong. Try it with
get() and see how that goes.

Regards,
Jordan



From paddy3118 at netscape.net  Thu Sep  7 23:15:28 2006
From: paddy3118 at netscape.net (Paddy)
Date: 7 Sep 2006 20:15:28 -0700
Subject: Positive lookahead assertion
References: <45006ede$0$19734$88260bb3@free.teranews.com>
	<1157660939.252322.135820@e3g2000cwe.googlegroups.com>
	<45007616$0$19655$88260bb3@free.teranews.com>
	<1157682933.859637.95160@m73g2000cwd.googlegroups.com>
Message-ID: <1157685328.577019.92410@m79g2000cwm.googlegroups.com>

Paddy wrote:
> tobiah wrote:
> > >> Posted via a free Usenet account from http://www.teranews.com
> > > Its all about context. If you want to match something but only if it
> > > precedes something else, then you follow the regular expression for
> > > 'something' by the regular expression for 'something else' where
> > > `something else` is enclosed by (?=...)
> > >
> > > The regular expression engine will surreptitiously check that
> > > 'something else' does indeed follow, before returning any match of
> > > 'something'.
> >
> >
> > How would this differ from just
> >
> > re.search('somethingsomething else')
> >
>
> Notice that in the last search below, something else needs to follow,
> but is not consumed.
>
> >>> import re
> >>> re.search(r'something', ' somethingsomethingsomething else').span()
> (1, 10)
> >>> re.search(r'somethingsomething else', ' somethingsomethingsomething else').span()
> (10, 33)
> >>> re.search(r'something(something else)', ' somethingsomethingsomething else').span()
> (10, 33)
> >>> re.search(r'something(?=something else)', ' somethingsomethingsomething else').span()
> (10, 19)
> >>>
>
> - Paddy.

Heres a more complicated example to show its effect on subsequent group
matches.
The lines are getting a little long so if you see S think something; E
think else.

Remember that .*? matches the LEAST amount of following characters, and
that  (?P<name>...) creates a group that can be later referred to by
name.

>>> import re

# The first else after something
>>> re.search(r'S.*?(?P<else>E)',      " SS EE").span("else")
(4, 5)

# The first else after somethingsomething else
>>> re.search(r'S(S E).*?(?P<else>E)',  " SS EE").span("else")
(5, 6)

# The first E after S but only if the S was followed immediately by S E
>>> re.search(r'S(?=S E).*?(?P<else>E)'," SS EE").span("else")
(4, 5)
>>> 

Back to bed for me in the UK.

- Paddy.



From ethanton at gmail.com  Mon Sep  4 05:56:39 2006
From: ethanton at gmail.com (kryten21)
Date: 4 Sep 2006 02:56:39 -0700
Subject: Newbie XML Output question
In-Reply-To: <1157361827.059520.44300@h48g2000cwc.googlegroups.com>
References: <1157361827.059520.44300@h48g2000cwc.googlegroups.com>
Message-ID: <1157363799.593249.252970@74g2000cwt.googlegroups.com>

Sorry, there should be no "req.write(file)" there.


> def get_request(req):
> 	if req.method == 'GET':
> 		req.content_type = "text/xml"
> 		req.sendfile(LOCAL_FILE)
> 		req.write(file)
>                 return apache.OK
>



From joel.hedlund at gmail.com  Fri Sep  1 04:01:37 2006
From: joel.hedlund at gmail.com (Joel Hedlund)
Date: Fri, 01 Sep 2006 10:01:37 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <mailman.10220.1157068606.27775.python-list@python.org>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
Message-ID: <ed8p5b$ff7$1@news.lysator.liu.se>

 > Short answer: Use Traits. Don't invent your own mini-Traits.

Thanks for a quick and informative answer! I'll be sure to read up on the 
subject. (And also: thanks Bruno for your contributions!)

 > Types are very frequently exactly the wrong thing you want to check for.

I see what you mean. Allowing several data types may generate unwanted side 
effects (integer division when expecting real division, for example).

I understand that Traits can do value checking which is superior to what I 
presented, and that they can help me move validation away from functional 
code, which is always desirable. But there is still the problem of setting 
an approprate level of validation.

Should I validate data members only? This is quite easily done using Traits 
or some other technique and keeps validation bloat localized in the code. 
This is in line with the DRY principle and makes for smooth extensibility, 
but the tracebacks will be less useful.

Or should I go the whole way and validate at every turn (all data members, 
every arg in every method, ...)? This makes for very secure code and very 
useful tracebacks, but does not feel very DRY to me... Are the benefits 
worth the costs? Do I build myself a fortress of unmaintainability this way? 
Will people laugh at my modules?

Or taken to the other extreme: Should I simply duck-type everything, and 
only focus my validation efforts to external data (from users, external 
applications and other forces of evil). This solution makes for extremely 
clean code, but the thought of potential silent data corruption makes me 
more than a little queasy.

What level do you go for?

Thanks!
/Joel

Robert Kern wrote:
> Joel Hedlund wrote:
>> Hi!
>>
>> The question of type checking/enforcing has bothered me for a while, and 
>> since this newsgroup has a wealth of competence subscribed to it, I 
>> figured this would be a great way of learning from the experts. I feel 
>> there's a tradeoff between clear, easily readdable and extensible code 
>> on one side, and safe code providing early errors and useful tracebacks 
>> on the other. I want both! How do you guys do it? What's the pythonic 
>> way? Are there any docs that I should read? All pointers and opinions 
>> are appreciated!
> 
> Short answer: Use Traits. Don't invent your own mini-Traits.
> 
> (Disclosure: I work for Enthought.)
> 
>    http://code.enthought.com/traits/
> 
> Unfortunately, I think the standalone tarball on that page, uh, doesn't stand 
> alone right now. We're cleaning up the interdependencies over the next two 
> weeks. Right now, your best bet is to get the whole enthought package:
> 
>    http://code.enthought.com/ets/
> 
> Talk to us on enthought-dev if you need any help.
> 
>    https://mail.enthought.com/mailman/listinfo/enthought-dev
> 
> 
> Now back to Traits itself:
> 
> Traits does quite a bit more than "type-checking," and I think that is its 
> least-useful feature that it provides for Python users. Types are very 
> frequently exactly the wrong thing you want to check for. They allow inputs that 
> you would like to be invalid and disallow inputs that would have worked just 
> fine if you had relied on duck-typing. In general terms, Traits does 
> value-checking; it's just that some of the traits definitions check values by 
> validating their types.
> 
> You have to be careful with type-checking, because it can introduce fragility 
> without enhancing safety. But sometimes you are working with other code that 
> necessarily has type requirements (like extension code), and moving the 
> requirements forward a bit helps build usable interfaces.
> 
> Your examples would look like this with Traits:
> 
> 
> from enthought.traits.api import HasTraits, Int, method
> 
> class MyClass(HasTraits):
>      """My example class.
>      """
> 
>      int_member = Int(0, desc="I am an integer")
> 
>      method(None, Int)
>      def process_data(self, data):
>           """Do some data processing.
>           """
> 
>           self.int_member += 1
> 
> 
> a = MyClass(int_member=9)
> a = MyClass(int_member='moo')
> """
> Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
>    File "/Users/kern/svn/enthought-lib/enthought/traits/trait_handlers.py", line 
> 172, in error
>      raise TraitError, ( object, name, self.info(), value )
> enthought.traits.trait_errors.TraitError: The 'int_member' trait of a MyClass 
> instance must be a value of type 'int', but a value of moo was specified.
> """
> 
> # and similar errors for
> # a.int_member = 'moo'
> # a.process_data('moo')
> 
> 
> The method() function predates 2.4 and has not yet been converted to a 
> decorator. We don't actually use it much.
> 


From ldo at geek-central.gen.new_zealand  Wed Sep 27 17:39:47 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 28 Sep 2006 09:39:47 +1200
Subject: Splitting device addresses into parts
References: <efbl8h$kf2$03$1@news.t-online.com>
Message-ID: <efer1d$8vh$2@lust.ihug.co.nz>

In message <efbl8h$kf2$03$1 at news.t-online.com>, Fabian Steiner wrote:

> I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
> need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
> simple way to achieve this? So far I am using regular expressions but I
> would like to avoid them ...

Good for you for wanting to avoid REs if you can. Bookmark this page
<http://docs.python.org/lib/string-methods.html> and refer to it often.


From steve at holdenweb.com  Sun Sep  3 09:54:03 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 03 Sep 2006 14:54:03 +0100
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <edeiqj$11ef$1@news.uit.no>
References: <edcrms$auj$1@news.uit.no>	<mailman.10304.1157280160.27775.python-list@python.org>	<edefl6$10dc$1@news.uit.no>
	<edeiqj$11ef$1@news.uit.no>
Message-ID: <edemom$lrm$1@sea.gmane.org>

Tor Erik wrote:
> Tor Erik wrote:
> 
>>Fredrik Lundh wrote:
>>
>>>Tor Erik wrote:
>>>
>>>
>>>>The reason is that my application does about 16 connects and data 
>>>>transfers per second, to the same 16 remote hosts. After approx 200 
>>>>secs there are 4000 sockets waiting to be garbage collected by the OS.
>>>
>>>what does "netstat" say about these sockets ?
>>>
>>></F>
>>>
>>They are in the TIME_WAIT state... The msn library has an article on how 
>>to solve this:
>>
>>http://msdn.microsoft.com/library/default.asp?url=/library/en-us/BTS06CoreDocs/html/6987640c-1d80-4fbf-b43a-021fc8ba06a4.asp 
>>
>>
>>Summing up one could either:
>>
>>1. Increase the upper range of ephemeral ports that are dynamically 
>>allocated to client TCP/IP socket connections:
>>
>>set registry key: 
>>KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\MaxUserPort 
>>
>>to a new DWORD value... (5000 - 65534)
>>The default in XP is 3976 -> http://support.microsoft.com/kb/Q149532
>>
>>or
>>
>>2. Reduce the client TCP/IP socket connection timeout value from the 
>>default value of 240 seconds
>>
>>set registry key:
>>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\TcpTimedWaitDelay 
>>
>>to a new DWORD value (30 - 300)
>>
>>The TCP RFC (RFC 793) recommends a value of 2*msl(Maximum Segment 
>>Lifetime). The general consensus about the value of msn seems to be 1-2 
>>minutes, depending on the underlying network... (2*2 min = 2*120 sec = 
>>240 sec)
>>
>>
>>I do not want to alter my registry, so I'm currently testing an idea 
>>where I let the client connect and send its content, appended with my 
>>own "magic" EOF byte-sequence. When the server receives this EOF, it 
>>takes care to close the connection. This should eliminate the problem as 
>>it is the peer closing the connection that enters the TIME_WAIT state...
>>
>>I will report my experiences...
> 
> 
> Well...  my idea does not work as expected. Even though the server 
> (remote host) calls socket.close(), it is the client that executes 
> TIME_WAIT. My guess is that the subtrates below socket closes the 
> connection at the peer calling connect regardless of where socket.close 
> is called.
> 
> Thoughts anyone?

Yes, it's the transport layer that puts the socket into the TIME_WAIT state.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From skip at pobox.com  Tue Sep 26 16:17:46 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 26 Sep 2006 15:17:46 -0500
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <17689.35562.413328.775572@montanaro.dyndns.org>


    John> But what if you are an expert Python program and have zero clue
    John> about other languages? Can you still earn a living that way, or do
    John> most/all companies require multiple language proficiency?

I'd think any company that wanted to hire you as a programmer would normally
expect that you could program in multiple languages.  Still, at my current
job we are a C++ & Python shop.  I can still write C okay, but my boss would
probably rightly never assign a C++ task to me.

Skip


From http  Tue Sep  5 00:29:56 2006
From: http (Paul Rubin)
Date: 04 Sep 2006 21:29:56 -0700
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <7x7j0j0wcb.fsf@ruckus.brouhaha.com>

alf <ask at me> writes:
> I have a reference to certain objects. What is the most pythonic way
> to test for valid reference:

If you're intending to use None as a sentinel for an invalid reference,
then use
> 	if obj is not None:

You could also make a unique sentinel:

       Sentinel = object()
       ...
       if obj is not Sentinel:  ...

"if obj" isn't necessarily what you want; obj might be a valid but
empty container.

"if obj != None" is also wrong, for reasons someone else explained.


From MichaelDMcDonnell at yahoo.com  Fri Sep 15 12:11:41 2006
From: MichaelDMcDonnell at yahoo.com (Michael)
Date: 15 Sep 2006 09:11:41 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <mailman.94.1158249543.10491.python-list@python.org>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
	<pan.2006.09.14.15.36.07.509974@gmx.net>
	<1158248572.373909.53420@d34g2000cwd.googlegroups.com>
	<mailman.94.1158249543.10491.python-list@python.org>
Message-ID: <1158336701.552009.137100@m73g2000cwd.googlegroups.com>

Robert,

Thanks to you and everyone else for the help. The "s.split('\x00',
1)[0] " solved the problem.

Thanks again,
MDM

Robert Kern wrote:
> Michael wrote:
> > I guess, I still don't see how this will work. I'm receiving a C
> > zero-terminated string in my Python program as a 1K byte block (UDP
> > datagram). If the string sent was "abc", then what I receive in Python
> > is <a><b><c><0><garbage><garbage>...<last_garbage_byte>. How is Python
> > going to know where in this 1K byte block the end of the string is? It
> > seems that what I need to do is tell Python that the string ends at
> > zero-relative index 3. What am I missing here?
>
> Nothing. This is what I would do:
>
>
> In [34]: s
> Out[34]: 'abc\x00garbage'
>
> In [35]: s.split('\x00', 1)[0]
> Out[35]: 'abc'
>
> In [36]: s.split?
> Type:           builtin_function_or_method
> Base Class:     <type 'builtin_function_or_method'>
> String Form:    <built-in method split of str object at 0x6ada2c8>
> Namespace:      Interactive
> Docstring:
>      S.split([sep [,maxsplit]]) -> list of strings
>
>      Return a list of the words in the string S, using sep as the
>      delimiter string.  If maxsplit is given, at most maxsplit
>      splits are done. If sep is not specified or is None, any
>      whitespace string is a separator.
>
>
> Using the maxsplit argument saves split from having to do unnecessary work
> splitting the garbage portion if there are nulls there, too.
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From python-url at phaseit.net  Wed Sep  6 13:16:03 2006
From: python-url at phaseit.net (Jack Diederich)
Date: Wed, 6 Sep 2006 17:16:03 +0000 (UTC)
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (Sep  6)
Message-ID: <edmvoj$ccd$1@lairds.us>

QOTW:  "The bad news is that I seem to be an anti-channeler, so my interest
is perhaps not a *good* sign" - Jim Jewett

"I'm sorry this letter is so long. I didn't have time to write a shorter
one." - Blaise Pascal (1657)


    The Python 2.5 release date is now September 19th.
        http://www.python.org/dev/peps/pep-0356/
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/53084d0465a1f5fc/
        
    IronPython runs on Mono too.  Here is How.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/398aca428247ad7e/

    Call For Proposals: PyCon 2007
        http://mail.python.org/pipermail/python-announce-list/2006-August/005201.html

    Call For Tutorials: PyCon 2007
        http://mail.python.org/pipermail/python-announce-list/2006-August/005202.html

    The best way to find out if something is a number is to use it like one and
    see what happens.
      http://groups.google.com/group/comp.lang.python/browse_thread/thread/91427c4160b8ab9c/

    This week's flame war was brought to you by threading, processes and the
    letters G-I-L
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/545f279ccf46f87b/

    Subclassing the int class does not make ints mutable.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/011dbd0545df9dad/

    Why was PEP 359 ("make" syntax) rejected when it would make line-for-line
    translations of XML into python so much easier?  Asked and answered.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/dab58e645d80c7c2/

 Releases of Note
    IronPython 1.0 - Python implementation for .Net
      http://groups.google.com/group/comp.lang.python/browse_thread/thread/0b3059f37075a97f/
      http://blogs.msdn.com/hugunin/archive/2006/09/05/741605.aspx

    markup.py 1.5 - A lightweight HTML/XML generator
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/5049614dea04334f/

    matplotlib 0.87.5 Quality 2D plots in python
        http://cheeseshop.python.org/pypi/matplotlib

    rawdog 2.10 - RSS Aggregator
        http://cheeseshop.python.org/pypi/rawdog/2.10

 Upcoming Community Events
    Plone Conference 2006, October 25-27 (Seattle, Washington)
        http://plone.org/events/conferences/seattle-2006

    Open Source Developers Conference December 5-8 (Melbourne, Australia)
        http://www.osdc.com.au/

    PyCon 2007, February 23-25 (Dallas, TX)
        http://us.pycon.org/TX2007/HomePage

    RuPy 2007, April 7-8 (Poznan, Poland)
        http://rupy.wmid.amu.edu.pl/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/python/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.


From defcon8 at gmail.com  Thu Sep  7 15:02:09 2006
From: defcon8 at gmail.com (defcon8)
Date: 7 Sep 2006 12:02:09 -0700
Subject: Printing Documents
In-Reply-To: <edpnnr$1r9$1@newsreader2.netcologne.de>
References: <1157651301.622295.165810@d34g2000cwd.googlegroups.com>
	<edpnnr$1r9$1@newsreader2.netcologne.de>
Message-ID: <1157655729.742910.320910@d34g2000cwd.googlegroups.com>


Claudio Grondi wrote:
> defcon8 wrote:
> > How can I print html documents in Python on Windows?
> >
> ;-)
>
> 1. You start the Microsoft Internet Explorer and make some space on the
> Desktop for a Python shell window.
> 2. You start the Python shell and position it within the prepared space
> 3. Still looking at the Python shell you load the document into the
> Internet Explorer and then use its menu [File] -> [Print] to invoke
> printing (don't forget to keep your eye on the Python shell...)
>
> ;-)
>
> Claudio Grondi
> P.S. There are many options to automate usage of MSIE from Python, so
> maybe if you explain what you actually intend to achieve, someone else
> can give you a better advice.

I think the automation of opening of html in IE, then the printing of
it would be possible. Would you be able to tell me how that is done?



From apardon at forel.vub.ac.be  Thu Sep 28 03:41:36 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 07:41:36 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<Xns984B746409A6BOKB@199.45.49.11>
	<mailman.831.1159383631.10491.python-list@python.org>
Message-ID: <slrnehmv5g.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-27, Tim Chase <python.list at tim.thechases.com> wrote:
>>> To begin with this already fails:
>>>
>>>>>> for i in xrange(Top):
>>> ...   print i
>> 
>>     	What do you expect this to do?  Loop forever?
>
> Perhaps the infinite loop should take half as long as
>
> >>> for i in xrange(Bottom, Top): print i
>
> Though then the values when the loop first starts are kinda 
> ambiguous... :)
>
> Given the limits of xrange:
>
> >>> for i in 
> xrange(10000000000000000000000000,10000000000000000000000009):
> ...	print i
>
> Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
> OverflowError: long int too large to convert to int
>
> I suspect one would have an overflow condition to help break you 
> out of the loop...

Sometime people want an infinite loop.

Personnaly I don't see why I should get an overflow error while
doing this:

  import sys
  for i in xrange(sys.maxint - 4, sys.maxint + 5):
    pass

I remember in the days when longs and ints were being unified,
that some people complained, because without this unification,
a loop in which an int counter was incremented would necessarily
end when the counter overflowed and this was a good indication
there was a bug somewhere. The response to that was, that you
could never foresee how your algorithm would be used and that
maybe someday someone found a good way to use your algoritm
where the counter would go beyond sys.maxint.

Following this logic there is no reason why xrange should be
limited to ints.

> >>> try:
> ...	for i in range(Top):
> ...		print i
> ... except OverflowError:
> ...	print 'done!'
>
> ...and then you time your instruction cycles and your disk reads 
> so they fall under the read-head at just the right time... [*]
>
> [*] http://www.catb.org/jargon/html/story-of-mel.html

There is no reason to compare what I propose to the story of melvin.
All behaviour of the objects would be well defined and could be
easily understood to those who would read the documentation.

-- 
Antoon Pardon


From steve at holdenweb.com  Tue Sep 26 09:07:02 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 09:07:02 -0400
Subject: A critique of cgi.escape
In-Reply-To: <efb1q3$a43$2@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>	<efa7cg$pr2$1@lust.ihug.co.nz>
	<efaknl$867$2@news.albasani.net>	<efakui$idf$4@lust.ihug.co.nz>
	<efate6$ilf$1@news.albasani.net> <efb1q3$a43$2@lust.ihug.co.nz>
Message-ID: <efb8k4$6n3$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <efate6$ilf$1 at news.albasani.net>, Georg Brandl wrote:
> 
> 
>>Lawrence D'Oliveiro wrote:
>>
>>>In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:
>>>
>>>
>>>>Lawrence D'Oliveiro wrote:
>>>>
>>>>>In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M
>>>>>wrote:
>>>>>
>>>>>
>>>>>>Lawrence is right that the escape method doesn't work the way he
>>>>>>expects it to.
>>>>>>
>>>>>>Rewriting a library module simply because a developer is surprised is
>>>>>>a *very* bad idea.
>>>>>
>>>>>I'm not surprised. Disappointed, yes. Verging on disgust at some
>>>>>comments in this thread, yes. But "surprised" is what a lot of users of
>>>>>the existing cgi.escape function are going to be when they discover
>>>>>their code isn't doing what they thought it was.
>>>>
>>>>Why should they be surprised? The documentation states clearly what
>>>>cgi.escape() does (as does the docstring).
>>>
>>>Documentation frequently states stupid things. Doesn't mean it should be
>>>treated as sacrosanct.
>>
>>That's not the point. The point is that someone using cgi.escape() will
>>hardly be surprised of what it does and doesn't do.
> 
> 
> And this surprise, or lack of it, is relevant to the argument how, exactly?

Is there *any* branch of this thread that won't end with some snippy 
remark from you?
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Tue Sep 12 18:33:26 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 00:33:26 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158098086.576040.69310@e63g2000cwd.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<mailman.333.1158060193.5279.python-list@python.org>	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>	<mailman.374.1158080179.5279.python-list@python.org>
	<1158098086.576040.69310@e63g2000cwd.googlegroups.com>
Message-ID: <ee7cjm$jjl$1@sea.gmane.org>

Paul Boddie wrote:

> Don't ask me! :-) I found it awkward enough scrolling up and down an n
> * 100 page plain text document formatted for a line printer in my Web
> browser, let alone spending time working out the cross-references
> throughout the text, all in the five to ten minutes I spent looking
> this up.

which proves my old theory: once a specification ends up having a bit 
more than 650 pages, it's certifiably evil.

(for true greatness, the limit is 50 pages)

</F>



From bhaduri at mail.utexas.edu  Tue Sep 19 17:38:11 2006
From: bhaduri at mail.utexas.edu (Sashmit Bhaduri)
Date: Tue, 19 Sep 2006 16:38:11 -0500
Subject: How to get a Fix to an Abandoned Project?
In-Reply-To: <mailman.296.1158699367.10491.python-list@python.org>
References: <mailman.296.1158699367.10491.python-list@python.org>
Message-ID: <eepnpe$dmj$1@ns3.arlut.utexas.edu>

Gregory Pi?ero wrote:
> After repeated failed attempts to contact the author, I dive in and
> fix it myself (just changing URI's really).  So now I have the fixed
> code and I'd like to update the project so others can use it, but I
> can't seem to login to the trac page to change the code? 

Wait a while, and if you don't hear from the author(s), fork it.


From ms at cerenity.org  Tue Sep  5 20:24:57 2006
From: ms at cerenity.org (Michael)
Date: Wed, 06 Sep 2006 01:24:57 +0100
Subject: newbie pipe question
References: <1157420035.525794.71510@74g2000cwt.googlegroups.com>
Message-ID: <44fe1398$0$571$ed2619ec@ptn-nntp-reader03.plus.net>

linuxnooby at yahoo.com.au wrote:

> Hi
> 
> I want to write a python script that accepts input ( a single line of
> text) from another program (squid proxy) and sends back output ( a
> single line of text). I am not sure how to go about this

With a squid redirector (which is presumably what you mean) the things you
need to do are pretty simple:
   * Read a line of text as sent to you by squid on stdin
   * do some transform (if appropriate)
   * Write the line back to stdout

The key thing you want to ensure is that you're not buffered. ie make sure
at the top of your python script you have "-u" after the python path.
ie your minimal script should look something like:

#!/usr/bin/python -u

import sys

while 1:
   line = sys.stdin.readline()
   # do something
   sys.stdout.write(line)

Really quite simple you'll be pleased to see.

Regards,


Michael.
--
http://kamaelia.sourceforge.net/Home
http://yeoldeclue.com/blog



From nyamatongwe+thunder at gmail.com  Mon Sep 25 20:01:45 2006
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Tue, 26 Sep 2006 00:01:45 GMT
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <J5_Rg.36125$rP1.14947@news-server.bigpond.net.au>

    For the last 5 years most of my jobs have been Python based. At two 
of those places Python has been the main but not only language used.

    Neil


From bernhard.voigt at gmail.com  Thu Sep 14 04:04:25 2006
From: bernhard.voigt at gmail.com (bernhard.voigt at gmail.com)
Date: 14 Sep 2006 01:04:25 -0700
Subject: Linear regression in 3 dimensions
References: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
	<mailman.10279.1157182064.27775.python-list@python.org>
	<1157401922.417285.76870@m79g2000cwm.googlegroups.com>
	<edsfjg$3q4$1$8302bc10@news.demon.co.uk>
	<0m3Og.928$TV3.475@newssvr21.news.prodigy.com>
Message-ID: <1158221065.846852.149350@i42g2000cwa.googlegroups.com>

Hi Dave!

> <<snip>>
>
> Hi Bernhard,
> I am just starting to learn Python; could you plz tell me specifically
> the introduction(s) you have in mind?
>
> TIA,
> DaveB

Take a look at the documenation section on www.scipy.org.

Especially the old NumPy documentation (follow link to NumPy tutorial)
and the scipy tutorial (there's an 'old' version as pdf) were helpfull.

There is also a fee based e-book on NumPy which I should buy to support
the development, because the package is so great :-)

For matplotlib take a look at http://matplotlib.sourceforge.net/ and
get the user's guide.

Enjoy! Bernhard



From http  Mon Sep 25 19:34:10 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 16:34:10 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <7xk63r8qrx.fsf@ruckus.brouhaha.com>

"walterbyrd" <walterbyrd at iname.com> writes:
> If so, I doubt there are many. 
> I wonder why that is?

Python programmers get their code working so fast that management has
to find other things for them to do to fill their time.  So they're
not really making a living programming in Python.


From sanxiyn at gmail.com  Thu Sep 14 01:25:24 2006
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Thu, 14 Sep 2006 14:25:24 +0900
Subject: [ANN] IronPython Community Edition 1.0r1
Message-ID: <5b0248170609132225q37b49418od3d1fea1ad77d0d@mail.gmail.com>

I am happy to announce IronPython Community Edition (IPCE for short)
1.0 revision 1, based on IronPython 1.0, to the world.

Get it here:
http://sparcs.kaist.ac.kr/~tinuviel/download/IPCE-1.0r1.zip

Binary is built with Mono 1.1.17.1.

Benefits of this edition:

1. You don't need to fight Mono with non-working line editing or
white-on-white "blind" console on Linux or Mac. A fix for this issue
and fixed binary is already included.

2. You don't need to edit makefile to build from the source on Mono.

3. Various bugfixes are included: patches are available here:
http://sparcs.kaist.ac.kr/~tinuviel/fepy/patches/1.0/

patch-ironpython-mono-console
patch-ironpython-mono-makefile
Discussed above.

patch-ironpython-co-flags
This patch fixes an issue that co_flags reports **-argument only
function to have *-argument as well.

patch-ironpython-codedom-empty-return
This patch fixes an issue that CodeDom generator doesn't handle empty
return statements.

patch-ironpython-oldstyle-setattr
This patch fixes an issue that __setattr__ wasn't called for old-style classes.

patch-ironpython-os-utime
This patch fixes an issue that os.utime didn't set modified time and
set access time wrong.

patch-ironpython-re-backslash-escape
This patch fixes an issue that backslash escape \\ wasn't properly
handled in regular expression.

-- 
Seo Sanghyeon


From johnjsal at NOSPAMgmail.com  Thu Sep 28 10:41:32 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 14:41:32 GMT
Subject: startswith() and endswith() for re's would be more intuitive
In-Reply-To: <451bdc57$0$20520$626a54ce@news.free.fr>
References: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>
	<451bdc57$0$20520$626a54ce@news.free.fr>
Message-ID: <waRSg.45$1n3.400@news.tufts.edu>

Bruno Desthuilliers wrote:
> metaperl wrote:
>> I just finished answering a question in #python because someone tried
>> to match using ... well.. match()
>> but did not realize that match() is actually startswith() for regexps.
> 
> Yet someone else that failed to read the Fine Manual(tm).
> 
>> I suggest:
>> re.compile('blah').atstartof(string)
>> re.compile('blah').atendof(string)
> 
> What's wrong with:
> re.search(r'^blah', somestring)
> re.search(r'blah$', somestring)

I think, since he even said himself that "match() is actually 
startswith() for regexps", that he isn't complaining about the lack of 
this feature, just that he wants a name change. Otherwise I'm not sure 
what he wants.


From brenNOSPAMbarn at NObrenSPAMbarn.net  Thu Sep 14 21:39:04 2006
From: brenNOSPAMbarn at NObrenSPAMbarn.net (OKB (not okblacke))
Date: Fri, 15 Sep 2006 01:39:04 GMT
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
	<mailman.109.1158271534.10491.python-list@python.org>
Message-ID: <Xns983EBE117F9FEOKB@199.45.49.11>

    	What I'm interested in knowing is whether anyone has found any 
editor other than TextPad and UltraEdit which allows soft word-wrap (no 
line breaks stored in the file) which do NOT wrap the text to the left 
edge of the screen but instead wrap it back only as far as the 
indentation level of the beginning of the line.  So that if I start out 
on a line indented halfway across the screen, and the line wraps, I get 
a block of text, all of which is indented halfway across the screen -- 
but then it's saved in the file as one long line.  In other words, an 
editor that separates how the text is DISPLAYED from how it's SAVED.

-- 
--OKB (not okblacke)
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is
no path, and leave a trail."
	--author unknown


From steve at holdenweb.com  Fri Sep 22 08:28:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 08:28:32 -0400
Subject: Strange behaviour of 'is'
In-Reply-To: <Xns984654883320Eduncanbooth@127.0.0.1>
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>	<87psdozu2n.fsf@benfinney.id.au>	<mailman.441.1158899129.10491.python-list@python.org>
	<Xns984654883320Eduncanbooth@127.0.0.1>
Message-ID: <4513D6F0.2050902@holdenweb.com>

Duncan Booth wrote:
> Steve Holden <steve at holdenweb.com> wrote:
> 
> 
>>Absolutely correct. It would be more interesting to discuss how the 
>>output from these statements varied between (say) CPython, Jython and 
>>Iron Python. At the moment the discussion is indeed about insignificant 
>>implementation trivia.
> 
> 
> CPython seems to collapse identical float values if they are in the same 
> compilation unit:
> 
> 
>>>>x = 2.
>>>>y = 2.
>>>>x is y
> 
> False
> 
>>>>x = 2.; y = 2.
>>>>x is y
> 
> True
> 
>>>>y = [2., 2.]
>>>>y[0] is y[1]
> 
> True
> 
> IronPython doesn't collapse them even when they are in expression:
> 
> IronPython 1.0.60816 on .NET 2.0.50727.42
> Copyright (c) Microsoft Corporation. All rights reserved.
> 
>>>>x = 2.
>>>>y = 2.
>>>>x is y
> 
> False
> 
>>>>x = 2.; y = 2.
>>>>x is y
> 
> False
> 
>>>>y = [2., 2.]
>>>>y[0] is y[1]
> 
> False
> 
> JPython seems to behave in a similar manner to CPython:
> 
> Python command console - JPython 2.1
> 
> 
>>>>x = 2.
>>>>y = 2.
>>>>x is y
> 
> 0
> 
> 
>>>>x = 2.; y = 2.
>>>>x is y
> 
> 1
> 
> 
>>>>y = [2., 2.]
>>>>y[0] is y[1]
> 
> 1
> 
> 
> 
> Sorry, I don't have a more recent Jython implementation to hand to complete 
> the comparison.

Perfectly all right: you make the point very well that the behavior is 
an implementation artifact and not a language feature.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From cginboston at hotmail.com  Mon Sep 18 09:41:10 2006
From: cginboston at hotmail.com (Chaz Ginger)
Date: Mon, 18 Sep 2006 13:41:10 GMT
Subject: Automatically installing libraries?
Message-ID: <WlxPg.8305$4a3.6056@trnddc07>

Here is a problem I am trying to solve; I am sure there must be an easy 
way to do it and I just don't know how.

I have a rather large application that I am writing. To make it easy for 
the user to run I have them run a startup.py script. This script will 
try to load each of the third party libraries the application will need. 
If it is present, great. If it isn't, I would like to automatically 
install it. This is the heart of my problem: is there a Python 
equivalent to PERL's CPAN?

Peace,
Chaz


From iwcook58 at gmail.com  Wed Sep 13 22:25:35 2006
From: iwcook58 at gmail.com (iwcook58 at gmail.com)
Date: 13 Sep 2006 19:25:35 -0700
Subject: FtpUtils Progress Bar
Message-ID: <1158200735.698563.93380@i42g2000cwa.googlegroups.com>

Hi,
I can successfully upload and download files using Stefan's Schwarzer's
ftputil script.

The problem is that as some of the files are quite large you cannot see
how much has been downloaded/uploaded.
Even a percentage or just dots going across the screen would be better
than nothing.

Does anyone have an example on how to show the progress of the
upload/download when using ftputil?

Thanks in advance.

Kind regards
Ian Cook



From daniel.huangfei at gmail.com  Fri Sep 22 10:17:31 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 22 Sep 2006 07:17:31 -0700
Subject: anybody using python 2.5 that raises error while importing?
Message-ID: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>

there's a dll extension used to be imported with no error under version
2.4.3, but the new python complains that the name of the module can't
be found. seems not mentioned in the official documentation, any work
around to fix the issue without switching back to the old version?

tks..
daniel



From pfkeb at kunz-pbdsl3.stanford.edu  Wed Sep 13 09:11:19 2006
From: pfkeb at kunz-pbdsl3.stanford.edu (Paul F. Kunz)
Date: 13 Sep 2006 06:11:19 -0700
Subject: Scientific computing and data visualization.
References: <mailman.85.1157564525.5279.python-list@python.org>
Message-ID: <7twt877vyg.fsf@kunz-pbdsl3.stanford.edu>

"Fie Pye" <fiepye at atlas.cz> writes:

>         Hallo
> 	
> 	I would like to have a high class open source tools for scientific computing and powerful 2D and 3D data visualisation. Therefore I chose python, numpy and scipy as a base. Now I am in search for a visualisation tool. I tried matplotlib and py_opendx with OpenDx. OpenDx seems to me very good but the project py_opendx looks like closed. After py_opendx instalation and subsequent testing I got an error that needs discussion with author or an experienced user. Unfortunately a mail to author returned as undeliverable.
> 	
> 	Does anybody now about suitable visualisation tool?
> 	
Have you looked at HippoDraw?

http://www.slac.stanford.edu/grk/ek/hippodraw


From onurb at xiludom.gro  Thu Sep 21 08:48:29 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 21 Sep 2006 14:48:29 +0200
Subject: Can I inherit member variables?
In-Reply-To: <1158837585.252993.116590@e3g2000cwe.googlegroups.com>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<mailman.399.1158835004.10491.python-list@python.org>
	<1158837585.252993.116590@e3g2000cwe.googlegroups.com>
Message-ID: <45128a1d$0$27565$626a54ce@news.free.fr>

LorcanM wrote:
(snip)

> What I'm doing is a bit more
> abstract: I'm instantiating a 'world' (as a super class) and then
> various 'worldviews' as sub-classes. The 'worldviews' must know about
> various aspects of the 'world' from which they are instantiated to be
> able to do what they need to do 

Mmmm... I suspect that you're falling into the good'ole trap of abusing
inheritance here. The fact that Worlview instances needs to know about a
World instance is usually modeled by composition, ie WorldViews are
instanciated with a world instance and keep a reference to it:

class World(object):
   pass

class WorldView(object):
  __metaclass__ = WorldViewMeta
  def __init__(self, world, *args, **kw):
    self.world = world

world = World()
wv = WorldView(world)


If you need/want to get WorldViews from the world itself, it's not much
more difficult:

class World(object):
  def get_view(self, viewtype):
    return viewtype(self)


world = World()
wv = world.get_view(WorldView)


And if you really need/want to be able to do the same thing but with the
WorldView name instead of the class itself:

class World(object):
  _viewtypes = {}

  @classmethod
  def register_view_type(cls, viewtype):
      cls._viewtypes[viewtype.__name__] = viewtype

  def get_view(self, typename, *args, **kw):
    if isinstance(typename, basestring):
      return self._viewtypes[typename](self, *args, **kw)
    else: # assume it's the class
      return typename(self, *args, **kw)

  def dothis(self):
     return "dothis"

  def dothat(self, bar):
     return bar + bar

class WorldViewMeta(type):
  def __init__(cls, classname, bases, dic):
    World.register_view_type(cls)

class WorldView(object):
  __metaclass__ = WorldViewMeta
  def __init__(self, world, *args, **kw):
    self.world = world

class SomeWorldView(WorldView):
  def __init__(self, world, foo, parrot=False):
    WorldView.__init__(self, world)
    self.foo = foo
    self.parrot = parrot

world = World()
some_view = world.get_view("SomeWorldView", 42, parrot=True)
# or
some_view = world.get_view(SomeWorldView, 42, parrot=True)


Also, if you want to be able to use the WorldViews like it was the world
itself, you can easily delegate:

class DelegateWorldView(WorldView):
  def __init__(self, world):
    WorldView.__init__(self, world)

  # 'override' World.dothat:
  def dothat(self, bar):
     bar = bar * 3
     return self.world.dothat(bar)

  # automagically delegate other stuff:
  def __getattr__(self, name):
    return getattr(self.world, name)

HTH

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From george.sakkis at gmail.com  Mon Sep 11 16:11:07 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 11 Sep 2006 13:11:07 -0700
Subject: Parsing String, Dictionary Lookups, Writing to Database Table
References: <mailman.277.1157994284.5279.python-list@python.org>
Message-ID: <1158005467.804847.271340@i42g2000cwa.googlegroups.com>

Rich Shepard wrote:

>    I know how I'd do all this in C, but since I'm learning python I have not
> found how best to accomplish this despite the books and online references
> I've read.

Can you post one or more examples of expected input-output pairs ? From
your description it's not really clear what's going on. Also, please
post working code; the snippets you posted were out of context (what is
row?) and not always correct syntactically (split_line(2:4)).

George



From kenneth.m.mcdonald at sbcglobal.net  Wed Sep 13 19:31:32 2006
From: kenneth.m.mcdonald at sbcglobal.net (kenneth.m.mcdonald at sbcglobal.net)
Date: Wed, 13 Sep 2006 23:31:32 GMT
Subject: Status of PyXPCOM?
Message-ID: <ox0Og.1709$IA.522@newssvr11.news.prodigy.com>

I'm waiting for PyXPCOM with bated breath, but always have a
hard time figuring out what is actually happening with it--the
ActiveState mailing list is mostly inactive, and web searches
Always turn up very old, out of date pages. If it weren't for the 
fact that I know Mark Hammond is working,very, very hard on it,
I'd almost swear it was a dead project.

Is there a place to keep track of the status of this project?
I'm trying to write an application using FF as a base, but am of
course being hampered greatly by the limitations of JavaScript.
If I knew that PyXPCOM would, in a reasonable time frame,
be ready for pure Python/DOM guys like me (i.e. not C++/
XPCOM gurus) to let me interact with/program to the DOM
from Python, I'd just put off what I'm doing right now until
PyXPCOM was ready.

And of course, I'd really like to start contributing some DOM-
related Python code to the community also.

Thanks,
Ken



From gabrielg_laburando at yahoo.com.ar  Tue Sep 26 00:18:57 2006
From: gabrielg_laburando at yahoo.com.ar (Gabriel G)
Date: Tue, 26 Sep 2006 01:18:57 -0300
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfomg.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
Message-ID: <7.0.1.0.0.20060926003653.040f06a8@yahoo.com.ar>

At Monday 25/9/2006 11:08, Jon Ribbens wrote:

> >> What precisely do you think it would "break"?
> >
> > existing code, and existing tests.
>
>I'm sorry, that's not good enough. How, precisely, would it break
>"existing code"? Can you come up with an example, or even an
>explanation of how it *could* break existing code?

FWIW, a *lot* of unit tests on *my* generated html code would break, 
and I imagine a *lot* of other people's code would break too. So 
changing the defaults is not a good idea.
But if you want, import this on sitecustomize.py and pretend it said 
quote=True:

import cgi
cgi.escape.func_defaults = (True,)
del cgi



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From antroy at gmail.com  Mon Sep 11 09:02:27 2006
From: antroy at gmail.com (Ant)
Date: 11 Sep 2006 06:02:27 -0700
Subject: efficient text file search.
In-Reply-To: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
Message-ID: <1157979747.873204.51160@q16g2000cwq.googlegroups.com>


noro wrote:
> Is there a more efficient method to find a string in a text file then:
>
> f=file('somefile')
> for line in f:
>     if 'string' in line:
>          print 'FOUND'
            break
              ^^^
Add a 'break' after the print statement - that way you won't have to
read the entire file unless the string isn't there. That's probably not
the sort of advice you're after though :-)

Can't see why reading the entire file in as the other poster suggested
would help, and seeing as "for line in f:" is now regarded as the
pythonic way of working with lines of text in a file, then I'd assume
that the implementation would be at least as fast as "for line in
f.xreadlines(): "



From gagsl-py at yahoo.com.ar  Wed Sep 20 18:28:47 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 19:28:47 -0300
Subject: new string method in 2.5 (partition)
In-Reply-To: <4511845b$0$4523$e4fe514c@news.xs4all.nl>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<mailman.299.1158709371.10491.python-list@python.org>
	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
Message-ID: <7.0.1.0.0.20060920192549.05887828@yahoo.com.ar>

At Wednesday 20/9/2006 15:11, Irmen de Jong wrote:

>Because the result of partition is a non mutable tuple type containing
>three substrings of the original string, is it perhaps also the case
>that partition works without allocating extra memory for 3 new string
>objects and copying the substrings into them?
>I can imagine that the tuple type returned by partition is actually
>a special object that contains a few internal pointers into the
>original string to point at the locations of each substring.
>Although a quick type check of the result object revealed that
>it was just a regular tuple type, so I don't think the above is true...

Nope, a python string has both a length *and* a null terminator (for 
ease of interfacing C routines, I guess) so you can't just share a substring.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From anthra.norell at tiscalinet.ch  Mon Sep  4 14:53:47 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Mon, 4 Sep 2006 20:53:47 +0200
Subject: This seems to crash my program and gives me errors on the#include
	statements
References: <1157375279.790255.321010@b28g2000cwb.googlegroups.com><mailman.10334.1157378750.27775.python-list@python.org><1157382189.013651.326640@b28g2000cwb.googlegroups.com><edhfja$j0d$1@sunnews.cern.ch>
	<1157384235.898716.145660@h48g2000cwc.googlegroups.com>
Message-ID: <004101c6d053$74454ec0$0201a8c0@mcuf7>

Dexter,
      Whenever I can I post solutions. And when I do, I run them in an IDLE window and copy my commands plus the output over into
the message. So my posting should be replicable, if you would copy the commands into your IDLE window one by one and hitting return.
      Please do this and copy everything in your window back into your message. If we do that it shouldn't be hard to straighten
this out.

Frederic

----- Original Message -----
From: <Eric_Dexter at msn.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Monday, September 04, 2006 5:37 PM
Subject: Re: This seems to crash my program and gives me errors on the#include statements


> #import se
>
> # se available at http://cheeseshop.python.org/pypi/SE/2.2%20beta
>
> looks like it is the se beta..  I didn't get any kind of error or
> traceback that would tell me that though..
>
>
>
>
> Roberto Bonvallet wrote:
> > Eric_Dexter at msn.com wrote:
> > > It is giving errors on the import statements..  I will get an error on
> > > the line where I import this routine import csoundroutines and then the
> > > when I import the the program that tried to import csoundroutines I get
> > > an error and on down the chain..
> >
> > Please paste here the errors you get, and paste also the relevant code (not
> > the whole program) that triggers that error.
> >
> > --
> > Roberto Bonvallet
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From steve at holdenweb.com  Thu Sep 21 12:15:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 21 Sep 2006 12:15:32 -0400
Subject: Nested Looping SQL Querys
In-Reply-To: <1158844139.9195.19.camel@dot.uniqsys.com>
References: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>	<8veQg.10183$v%4.4387@newsread1.news.pas.earthlink.net>	<mailman.339.1158772948.10491.python-list@python.org>	<3bpQg.318$o71.173@newsread3.news.pas.earthlink.net>
	<1158844139.9195.19.camel@dot.uniqsys.com>
Message-ID: <eeudpj$4oa$1@sea.gmane.org>

Carsten Haese wrote:
> On Thu, 2006-09-21 at 01:12, Dennis Lee Bieber wrote:
> 
>>On Wed, 20 Sep 2006 13:21:54 -0400, Steve Holden <steve at holdenweb.com>
>>declaimed the following in comp.lang.python:
>>
>>
>>>.execute() is a cursor method, not a connection method. Some DB API 
>>>modules do implement it as a connection method, but that makes it 
>>>impossible for several cursors to share the same connection (which is 
>>>allowed by some modules).
>>>
>>
>>	It struck me that the original wasn't using a cursor just after the
>>messages posted.
> 
> 
> It doesn't look like the OP is using anything even remotely DB-API
> compliant:
> 
> """
> import cmi
> <snip>
> import hermes
> conn = hermes.db()
> <snip>
> 
> pubID=cgiForm.getvalue('pubID')
> pubName=cgiForm.getvalue('pubName','Unknown Publication')
> 
> sqlcheck1 = "SELECT pub_type FROM medusa.cmi_publication WHERE pub_id =
> '"+pubID+"'"
> overseas1 = conn.query(sqlcheck1)
> pubType = cmi.fetch_rows(overseas1)
> """
> 
> hermes is apparently some wrapper that magically can connect to a
> well-known database (via the argumentless db()) call. Who knows what
> kind of animal the 'conn' object is that comes out of that db() call.
> Apparently it's an object with a query() method that returns something
> like a cursor that can be passed into cmi.fetch_rows(). At this point I
> wonder why the responsibility of fetching rows is in a module separate
> from the responsibility of establishing a database connection.
> 
> Legacy code, indeed.
> 
Dog's breakfast, more like. I'm not surprised the OP is having trouble 
refactoring the database govne the code that accesses it at the moment.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From MonkeeSage at gmail.com  Tue Sep 12 01:19:05 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 11 Sep 2006 22:19:05 -0700
Subject: How to get the "longest possible" match with Python's RE module?
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
Message-ID: <1158038345.439986.45600@i3g2000cwc.googlegroups.com>

Licheng Fang wrote:
> Hi, according to these regexp engine discussions, it's NOT a behavior
> true to any implementation.
> [snip]

Well, I just double-checked in ruby (oniguruma regexp engine):

r = Regexp.new("do|dolittle")
puts r.match("dolittle")[0]
# do

r = Regexp.new("one(self)?(sufficient)?")
puts r.match("oneselfsufficient")[0]
# oneself

And perl:

if ("doolittle" =~
    /(do|dolittle)/) {
  print "$1\n";
  # do
}

if ("oneselfsufficient" =~
    /(one(self)?(selfsufficient)?)/) {
  print "$1\n";
  # oneself
}

And Javascript (whatever regexp engine Spidermonkey uses):

var r = new RegExp(/do|dolittle/);
alert("dolittle".match(r)[0]);

var r = new RegExp(/one(self)?(selfsufficient)?/);
alert("oneselfsufficient".match(r)[0]);

So, it seems they are all broken, or python is correct as well.

Regards,
Jordan



From pajerpunctuationinamedotcom  Sat Sep 23 10:41:10 2006
From: pajerpunctuationinamedotcom (gap)
Date: Sat, 23 Sep 2006 10:41:10 -0400
Subject: help with debugging a ctypes problem
Message-ID: <KLednWs2QvwK2ojYnZ2dnUVZ_tSdnZ2d@comcast.com>

I'm no c programmer, and I'm a ctypes newbie.  I'll frame my problem as 
simply as I can.  Sorry if it's too much or not enough info.  I don't 
expect an explicit answer (but maybe), just help figuring out how to debug.

WinXP, python 2.4.2

I'm using ctypes to access functions in a commercial dll.  A certain 
function takes five arguments, foo(a, b, c, d, e).  The last argument, 
e, is an integer that serves as a bit coded options flag.  Zero means no 
option, 1+2+4 means the first three options combined, etc.

I can call foo() successfully if e=c_int(0).  However, if e=3, the 
function does not work.  Execution of the python program continues after 
the call, no errors are raised, but foo() has not done its thing.

If I now call bar(x, y, z) after foo(),  two things happen.
1.  The dll raises an error reporting that argument x is invalid
2.  Python reports that too many bytes (4) have been passed to bar()

I've checked the types of all the variables a million times, and they 
are correct according to the docs.  The vendor sent me a c program that 
they claim works.  It looks like a translation of mine.  I can't run 
theirs, because I can't figure out how to compile it (I'm don't do c; I 
do have MinGW; the code was designed for MSVC; I'm lost).

I'm suspecting that foo() screws up a stack somewhere.  That might 
explain why bar() chokes on the *first* parameter, while it thinks that 
the number of arguments is wrong when it gets to the *last*.

How can I debug this?  Can I view the appropriate stack?  What/where 
would I find it?  Any other ideas or advice?  etc?

thanks,
-gary


From larry.bates at websafe.com  Mon Sep 11 19:02:54 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 18:02:54 -0500
Subject: auto upgrade scripts?
In-Reply-To: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>
References: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>
Message-ID: <4505EB1E.5070007@websafe.com>

stefaan.himpe at gmail.com wrote:
> Hello list,
> 
> Is anyone aware of a (light-weight, easy-to-use)
> auto-upgrade framework for python scripts?
> 
> I find it hard to believe no one has wanted this before,
> yet google doesn't find too much relevant stuff.
> 
> Thanks,
> Best regards,
> Stefaan.
> 
Auto-upgrade from what to what?

-Larry Bates


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Sep 21 12:05:05 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 21 Sep 2006 18:05:05 +0200
Subject: Python 2.5 WinXP AMD64
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
Message-ID: <4nfrhbFa4kbiU1@individual.net>

Christophe wrote:

> To be exact, you need a 64bit Windows OS on a 64bit cpu.

Is there a reason that can be explained in a less-than-2-KB
posting? :) I mean why Python depends on the processor type that
much.

Regards,


Bj?rn

-- 
BOFH excuse #52:

Smell from unhygienic janitorial staff wrecked the tape heads



From mensanator at aol.com  Tue Sep 12 19:00:22 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 16:00:22 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<mailman.377.1158082452.5279.python-list@python.org>
	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>
	<mailman.384.1158087083.5279.python-list@python.org>
	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>
	<ee72uh$jca$1@sea.gmane.org> <4507153C.9070401@tim.thechases.com>
	<ee75vr$tro$1@sea.gmane.org>
	<mailman.397.1158098084.5279.python-list@python.org>
Message-ID: <1158102022.611557.4800@h48g2000cwc.googlegroups.com>


Tim Chase wrote:
> >> "But honestly, boss, I didn't write this code!  It was my
> >> evil alter-ego that puts VARCHAR values containing Gilbert &
> >> Sullivan lyrics into the Amount_Due CURRENCY fields!"
> >>
> > Hence the phrase "Going for a song"?
>
> I am the very model of a modern major database,
> For gigabytes of information gathered out in userspace.
> For banking applications to a website crackers will deface,
> You access me from console or spiffy user interface.
>
> My multi-threaded architecture offers you concurrency,
> And loads of RAM for caching things reduces query latency.
> The data is correctly typed, a fact that I will guarantee,
> Each datum has a data type, it's specified explicitly.

Mensantor:
When I was a lad I had to load
Data to Access via import mode.
Data came in as DBase III
And had to be converted to csv.
I so carefully converted the csv's
That now I am the admin of big db's.

Chorus:
He so carefully converted the csv's
That now he is the admin of big db's.

> 
> is-it-friday-yet'ly yers,
> 
> -tkc



From nick at craig-wood.com  Fri Sep  8 11:30:03 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Fri, 08 Sep 2006 10:30:03 -0500
Subject: xmingw and f2py
References: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>
	<slrneg2h90.d48.nick@irishsea.home.craig-wood.com>
	<1157716664.857936.174760@i42g2000cwa.googlegroups.com>
Message-ID: <slrneg32au.g8q.nick@irishsea.home.craig-wood.com>

Flavio <fccoelho at gmail.com> wrote:
>  I followed the steps you describe exactly and I am still gettin this
>  error message when i try to compile.
> 
>  here is the command I give:
> 
>  f2py -c --compiler=/opt/xmingw/bin/i386-mingw32msvc-gcc
>  n/i386-mingw32msvc-g77 -L /opt/xmingw/i386-mingw32msvc/lib/ -lpython2.4
>  -m flib flib.f
> 
>  and this is the error:
> 
>  copying
>  /usr/lib/python2.4/site-packages/numpy-1.0b5-py2.4-linux-i686.egg/numpy/f2py/src/fortranobject.c
>  -> /tmp/tmpIkxhAr/src.linux-i686-2.4
>  copying
>  /usr/lib/python2.4/site-packages/numpy-1.0b5-py2.4-linux-i686.egg/numpy/f2py/src/fortranobject.h
>  -> /tmp/tmpIkxhAr/src.linux-i686-2.4
>    adding '/tmp/tmpIkxhAr/src.linux-i686-2.4/flib-f2pywrappers.f' to
>  sources.
>  running build_ext
>  error: don't know how to compile C/C++ code on platform 'posix' with
>  '/opt/xmingw/bin/i386-mingw32msvc-gcc' compiler
> 
>  any further suggestions?

That looks like a distutils error.

We don't use distutils to build our stuff and I haven't really used it
before so I can't help you there.

You want to tell distutils that the compiler is just gcc somehow and
takes the same options.  Not sure how you do that.

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From python.sam at googlemail.com  Fri Sep 22 15:32:55 2006
From: python.sam at googlemail.com (sam)
Date: 22 Sep 2006 12:32:55 -0700
Subject: returning None instead of value: how to fix?
Message-ID: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>

i am starting to experiment with recursion, and decided to write a
fairly trivial little program which took a float as input, then called
a function to halve it recursively until it was less than 1:

____________________________________________________________________
import recursive_halve_module

raw_value = raw_input('please enter the number you would like to halve:
')
value = float(raw_value)

final_value = recursive_halve_module.recursive_halve(value)

print final_value

raw_input('hit enter to close: ')
_____________________________________________________________________

def recursive_halve(value):

    if value < 1:
	print value
	return value
    else:
    	value = value/2
    	print value
    	if value < 1:
	    return value
    	else:
	    recursive_halve(value)
______________________________________________________________________

it works fine apart from printing 'None' instead of 'final_value' at
the end. however, if you enter a value that is already less than 1, it
prints 'final_value' (i.e. that very same number) just fine.

now, it looks to me like only 'value' can be returned: either right at
the beginning (for values less than 1) or when you eventually get down
to below 1 after x function calls. but clearly that's not the case. i
understand that 'None' is returned by default by functions in Python.
my question is: how am i slipping into that default despite seemingly
(to me at least) avoiding it through explicitly returning something
else?

thanks in advance,

sam



From python.list at tim.thechases.com  Fri Sep 15 16:45:16 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 15 Sep 2006 15:45:16 -0500
Subject: REQ: Java/J2EE Developer 10 Months
In-Reply-To: <20060915200833.8338.qmail@web803.biz.mail.mud.yahoo.com>
References: <20060915200833.8338.qmail@web803.biz.mail.mud.yahoo.com>
Message-ID: <450B10DC.7070808@tim.thechases.com>

shrikant COOLSOFT wrote:
> Tim 
>    
>   Stop acting like an a%#s%@s^&
>    
>    
>   
> 
> Tim Chase <python.list at tim.thechases.com> wrote:
>   >> *Java, 2 year UNIX - HP / Solaris, 2 yrs OOA+D, Corba, Perl,
>>> XML, UML. *Java dev experience, Swing, JPS, 2 years of
>>> OOA+D.
>> Clearly not spam, since the guy is so in touch with the
>> readership of this group ... sigh ... is it just me, or is
>> this person an idiot?
> 
> Perhaps this is an acknowledgment that any Tom, Dick or Harry 
> armed with Python has the equiv. skills of someone with the above 
> credentials. Paraphrasing, "you can either have N years of skill 
> with complicated toolsets X, Y, and Z, or you can know how to do 
> it the easy way with Python."
> 
> Or, as you say, someone needs to send the OP a copy of 
> _Recruiting for Dummies_ along with _How not to Crosspost for Idiots_
> 
> Or, perhaps they just have their terminology off. "Corba" is a 
> lot like "cobra" which is also a snake, like a Python. ("We've 
> got Corba, right here in River City. That starts with 'C' and 
> that rhymes with 'P' and that stands for Python!")
> 
> I've gotta stop with the musicals... :)
> 
> -tkc

Sorry...I don't do perl...this is a python mailing list.  All 
those at-signs and hashes and percents in your reply are 
unnecessary in Python. :)

Hmm...let's see...who posted to a Python mailing list on the 
prowl for a Java developer?  Who top-posted in reply to my message?

As you can tell from the responses in this thread, the general 
consensus seems to be that you've cluelessly posted to the wrong 
list.

-tkc






From steve at holdenweb.com  Sun Sep  3 05:17:55 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 03 Sep 2006 10:17:55 +0100
Subject: How to run Python file?
In-Reply-To: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
Message-ID: <ede6iu$ake$1@sea.gmane.org>

mistral wrote:
> I have installed ActivePython
> http://www.activestate.com/Products/ActivePython/
> How I can run Python file, test.py?
> 
Sheesh, you must have had ten replies and nobody bothered to point you 
to the frequently-asked questions ... kids today!

   http://www.python.org/doc/faq/windows.html

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From djbclark at gmail.com  Sun Sep  3 07:44:02 2006
From: djbclark at gmail.com (djbclark at gmail.com)
Date: 3 Sep 2006 04:44:02 -0700
Subject: Building Python with non-traditional paths
Message-ID: <1157283842.810243.78490@i42g2000cwa.googlegroups.com>

Is there a clean way to build Python under a non-traditional path,
linking with other software that is under non-traditional paths, on
unix?

I maintain a build of Python [1] that is part of a self-contained
bundle of software [2] to run bcfg2 [3].

The major problem I am having is getting the build to link to the
openssl libraries, which are installed under /usr/local/lib/bcfg2/lib;
I tried (on GNU/Linux):

LDFLAGS="-L/usr/local/lib/bcfg2/lib
-Wl,-rpath,/usr/local/lib/bcfg2/lib"
CPPFLAGS="-I/usr/local/lib/bcfg2/include"

but that didn't work. The only thing I could do to get it to work
(sometimes) was to edit the setup.py file directly before the
./configure; make; make install like this:

cat setup.py \
| sed s:\/usr\/local\/:\/usr\/local\/lib\/bcfg2\/:g \
| sed
s:\/usr\/local\/lib\/bcfg2\/ssl\/include:\/usr\/local\/lib\/bcfg2\/include:g
\
| sed
s:\/usr\/contrib\/ssl\/include\/:\/usr\/local\/lib\/bcfg2\/include\/openssl\/:g
\
| sed
s:\/usr\/local\/lib\/bcfg2\/ssl\/lib:\/usr\/local\/lib\/bcfg2\/lib:g \
> setup.py.bcfg2
mv setup.py.bcfg2 setup.py

However that is rather ugly, and modifies the source which I'd rather
not do. Is there a better/cleaner way?

[1] Complete build spec for Python for Bcfg2
http://www.bcfg2.org/browser/trunk/bcfg2/encap/src/encap-profiles/bcfg2-python-2.4.3.ep

[2] Bcfg2 Encap Packages - Overview
http://www.bcfg2.org/wiki/EncapPackages

[3] Bcfg2 - Provides a declarative interface to system configuration
http://www.bcfg2.org



From kw at kevin-walzer.com  Tue Sep  5 10:42:11 2006
From: kw at kevin-walzer.com (Kevin Walzer)
Date: Tue, 05 Sep 2006 10:42:11 -0400
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157428874.399869.10560@m79g2000cwm.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
	<1157413341.812545.51970@m73g2000cwd.googlegroups.com>
	<44FCF02F.90900@kevin-walzer.com>
	<1157428874.399869.10560@m79g2000cwm.googlegroups.com>
Message-ID: <44FD8CC3.4050608@kevin-walzer.com>

hiaips wrote:

> 
> Outdated??? It's Python 2.4.3 (and they already have a build for
> 2.5rc1), so I'm not sure what you mean.
> 

There have been a couple of releases of Python 2.4.3 "universal" on OS
X.The first one was quietly posted for download from one of the
developers' .Mac account, and  announced only on the MacPython list,
with an invitation for feedback. It probably should have been tagged
"release candidate," but it wasn't. Someone grabbed it and posted it at
python.org.

A week or so later, a significantly faster/optimized release of Python
2.4.3 was announced on the MacPython list and posted for download at
pythonmac.org. That's the release that the Mac community considers to be
the "official" universal release.

It looks like the earlier release is what is available at python.org; it
hasn't been updated. That release was made on March 30, while the faster
release was made on April 7 (or thereabouts).

Once 2.5 is out, it will probably be moot. The "universal" build of
Python 2.4.3 is currently a fork from the main Python code base; the Mac
developers are concentrating on merging the changes in for the 2.5
release.  No further work is being done on 2.4.3 as far as I know.

-- 
Kevin Walzer
Poetic Code
http://www.kevin-walzer.com


From usenet at nicko.org  Sun Sep  3 05:43:41 2006
From: usenet at nicko.org (Nicko)
Date: 3 Sep 2006 02:43:41 -0700
Subject: python loops
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>
	<20060831193353.02FD61E4002@bag.python.org>
	<mailman.10240.1157105262.27775.python-list@python.org>
	<1157187866.833841.295930@m79g2000cwm.googlegroups.com>
	<mailman.10298.1157273110.27775.python-list@python.org>
Message-ID: <1157276620.968479.196110@h48g2000cwc.googlegroups.com>

Fredrik Lundh wrote:
> Nicko wrote:
>
> > ... In the case of the idiom "for i in
> > range(x):..." there absolutely no utility whatsoever in creating and
> > recording the list of objects.
>
> for short lists, both objects create the *same* number of objects.

This is true for long lists too, if you iterate over the full range,
but what I wrote was "creating and recording". The range() function
generates a variable-sized, potentially large object and retains all of
the items in the range while xrange() generates a fairly small, fixed
sized object and only hangs on to one item at a time.  Furthermore,
it's not at all uncommon for loops to be terminated early. With range()
you incur the cost of creating all the objects, and a list large enough
to hold them, irrespective of if you are going to use them.

> if you cannot refrain from pulling arguments out of your ass, you not
> really the right person to talk about hygiene.

I'm impressed but your mature argument. Clearly, in the face of such
compelling reasoning, I shall have to concede that we should all
generate our range lists up front.

Nicko



From fredrik at pythonware.com  Mon Sep 25 09:23:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 15:23:31 +0200
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com><1159187290.052703.116370@i42g2000cwa.googlegroups.com>
	<roy-B0D639.08575325092006@reader2.panix.com>
Message-ID: <ef8l8j$n6u$1@sea.gmane.org>

Roy Smith wrote:

>> 5. Number of job listings on internet job listing boards.
>
> I just did a quick survey for Perl and Python jobs on some of the big IT
> job boards.  I came up with:
>
> Site          Perl      Python
> Hotjobs       2756       655
> Monster      >1000       317
> Dice          4828       803
>
> I'm not sure how I'm going to spin that to a marketing guy to make him
> think that "by many (most?) measurements, Python is now more widely used
> than Perl for many types of applications"

I think the use of "applications" here implies "new applications", not "applications
still in use somewhere".

did you try searching for Cobol, btw ?

</F> 





From MonkeeSage at gmail.com  Thu Sep 21 07:15:24 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 21 Sep 2006 04:15:24 -0700
Subject: Can I inherit member variables?
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<eetnu9$gj7$1@online.de>
	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>
	<mailman.400.1158835802.10491.python-list@python.org>
Message-ID: <1158837324.884951.96060@e3g2000cwe.googlegroups.com>

Hi Lorcan,

Mabye thinking of it like this will help: birds and fishes (I love that
word, even if it is incorrect) can _do_ all the things that all animals
have in common: eat, drink, die, reproduce, &c; but that is generic.

class animal(object):
  def eat(self, food): pass
  ...
class bird(animal): pass
class fish(animal): pass

If you want to talk about a specific bird or fish, then you have to say
more than just that it is an animal. Now, if all animals have a weight
and a color, but not all have the same weight or color, then you want
to say that this bird or fish is an animal which is colored X and
weighes Y.

class animal(object):
  def __init__(self, weight, colour):
    self.weight = weight
    self.colour = colour
class bird(animal): pass # __init__ from animal is called implicitly
class fish(animal): pass

Now what if a bird and a fish have other attributes that not all
animals share (or at least specialized versions)? Well then you need to
say this bird is an animal which is colored X and weighs Y, but unlike
other animals, has a wingspan or length of Z.

class animal(object):
  def __init__(self, weight, colour):
    self.weight = weight
    self.colour = colour
class bird(animal):
  # override __init__ so we can say what _this_ animal is like
  def __init__(self, weight, color, wingspan):
    super(bird, self).__init__(weight, color)
    self.wingspan = wingspan
class fish(animal):
  def __init__(self, weight, color, length):
    super(fish, self).__init__(weight, color)
    self.length = length

Does this make more sense?

Regards,
Jordan



From outstretchedarm at hotmail.com  Wed Sep 13 12:08:53 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 13 Sep 2006 09:08:53 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <ee6noq$qdn$1@newsreader2.netcologne.de>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158015248.563755.32980@p79g2000cwp.googlegroups.com>
	<1158073922.601548.278280@m73g2000cwd.googlegroups.com>
	<ee6noq$qdn$1@newsreader2.netcologne.de>
Message-ID: <1158163732.971004.169530@i42g2000cwa.googlegroups.com>

thank you claudio for your comprehensive answer.  I will work on it.



From isalazar80 at yahoo.com.mx  Mon Sep 18 20:55:36 2006
From: isalazar80 at yahoo.com.mx (citlaly)
Date: 18 Sep 2006 17:55:36 -0700
Subject: Read a group of files as a list
In-Reply-To: <mailman.250.1158626322.10491.python-list@python.org>
References: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
	<mailman.250.1158626322.10491.python-list@python.org>
Message-ID: <1158627336.131188.264190@m7g2000cwm.googlegroups.com>


Thanks Steven! I'll check it!!

Saludos!!
Citlalyy



From matt at tplus1.com  Fri Sep 29 14:28:05 2006
From: matt at tplus1.com (Matthew Wilson)
Date: Fri, 29 Sep 2006 18:28:05 GMT
Subject: How to query a function and get a list of expected parameters?
Message-ID: <slrnehqpdl.810.matt@mwilson.umlcoop.net>

I'm writing a function that accepts a function as an argument, and I
want to know to all the parameters that this function expects.  How can
I find this out in my program, not by reading the source?

For example, I would want to know for the function below that I have to
pass in two things:

def f(x1, x2): return x1 * x2

It would be nice to get the names also.

All help is welcome.

TIA

Matt



-- 
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles


From http  Fri Sep  8 20:30:55 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 17:30:55 -0700
Subject: Map with an extra parameter
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
	<1157760537.816693.243780@d34g2000cwd.googlegroups.com>
	<1157761277.421434.233500@h48g2000cwc.googlegroups.com>
Message-ID: <7xzmd9x4n4.fsf@ruckus.brouhaha.com>

"ml1n" <emlyn at brizzle.com> writes:
> In the interests of speed my thinking was that using map would move the
> loop out of Python and into C, is that the case when using list
> comprehension?  I'd always thought it was just syntatic short hand for
> a Python loop.

Best to run benchmarks, but I don't expect a huge difference between
any of them.


From xmlhacker at gmail.com  Tue Sep  5 17:05:12 2006
From: xmlhacker at gmail.com (M. David Peterson)
Date: Tue, 5 Sep 2006 15:05:12 -0600
Subject: [IronPython] [ANN] IronPython 1.0 released today!
In-Reply-To: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
Message-ID: <eab75e160609051405x66b8b8d3h1123ba19e30dd01a@mail.gmail.com>

Congratulations, Jim!  Truly and amazing vision you and your development
staff have brought into fruition :)

>From my recent post to the O'Reilly Windows DevCenter,

ref:
http://www.oreillynet.com/windows/blog/2006/09/jim_huguninmsft_announce_ironp.html

Congratulations are in order to Jim Hugunin, Dino Viehland, Microsoft, the
> core IronPython development team<http://www.codeplex.com/Project/ProjectPeople.aspx?ProjectName=IronPython>,
> and two all of the community members that have been involved in the
> development of such a remarkable product which is represented by the final
> release of IronPython 1.0<http://www.codeplex.com/Wiki/View.aspx?ProjectName=IronPython>
> .
>
> To each of you listed above and to everyone involved with making this
> happen, a HUGE thank you! Truly an amazing accomplishment.
>


On 9/5/06, Jim Hugunin <Jim.Hugunin at microsoft.com> wrote:
>
> I'm extremely happy to announce that we have released IronPython 1.0today!
> http://www.codeplex.com/IronPython
>
> I started work on IronPython almost 3 years ago.  My initial motivation
> for the project was to understand all of the reports that I read on the web
> claiming that the Common Language Runtime (CLR) was a terrible platform for
> Python and other dynamic languages.  I was surprised to read these reports
> because I knew that the JVM was an acceptable platform for these
> languages.  About 9 years ago I'd built an implementation of Python that ran
> on the JVM originally called JPython and later shortened to Jython.  This
> implementation ran a little slower than the native C-based implementation of
> Python (CPython), but it was easily fast enough and stable enough for
> production use - testified to by the large number of Java projects that
> incorporate Jython today.
>
> I wanted to understand how Microsoft could have screwed up so badly that
> the CLR was a worse platform for dynamic languages than the JVM.  My plan
> was to take a couple of weeks to build a prototype implementation of Python
> on the CLR and then to use that work to write a short pithy article called,
> "Why the CLR is a terrible platform for dynamic languages".  My plans
> quickly changed as I worked on the prototype, because I found that Python
> could run extremely well on the CLR - in many cases noticeably faster than
> the C-based implementation.  For the standard pystone benchmark, IronPython
> on the CLR was about 1.7x faster than the C-based implementation.
>
> The more time I spent working on IronPython and with the CLR, the more
> excited I became about its potential to finally deliver on the vision of a
> single common platform for a broad range of languages.  At that same time, I
> was invited to come out to Microsoft to present IronPython and to talk with
> members of the CLR team about technical issues that I was running into.  I
> had a great time that day working through these issues with a group of
> really smart people who all had a deep understanding of virtual machines and
> language implementation.  After much reflection, I decided to join the CLR
> team at Microsoft where I could work with the platform to make it an even
> better target for dynamic languages and be able to have interesting
> technical discussions like that every day.
>
> The first few months at Microsoft were a challenge as I learned what was
> involved in working at a large company.  However, once the initial hurdle
> was over I started experiencing the things that motivated me to come here in
> the first place.  The team working on dynamic languages in general and
> IronPython in particular began to grow and I got to have those great
> technical discussions again about both how to make IronPython as good as it
> could be and how to make the CLR an even better platform.  We began to take
> advantage of the great new features for dynamic languages already shipping
> in .NET 2.0 such as DynamicMethods, blindingly fast delegates and a new
> generics system that was seamlessly integrated with the existing reflection
> infrastructure.
>
> We were also able to release IronPython publicly from Microsoft with a
> BSD-style license.  In the agile spirit of the project, we put out a new
> release of IronPython once every three weeks (on average) over the course of
> the project.  This helped us connect well with our daring early adopters and
> receive and incorporate their feedback to make IronPython better.  We've had
> countless excellent discussions on the mailing list on everything from
> supporting value types to calling overloaded methods.  Without the drive and
> input of our users, IronPython would be a much weaker project.
>
> IronPython is about bringing together two worlds.  The key value in
> IronPython is that it is both a true implementation of Python and is
> seamlessly integrated with the .NET platform.  Most features were easy and
> natural choices where the language and the platform fit together with almost
> no work.  However, there were challenges from the obvious cases like
> exception type hierarchies to the somewhat esoteric challenges concerning
> different methods on strings. We spent long days and sometimes weeks looking
> for the best answers to these challenging problems and in the end I think
> that we have stayed true to both Python and .NET.
>
> To drive our Python compatibility, we run a large portion of the standard
> Python regression test suite in addition to a large custom test suite we
> added that runs IronPython and CPython side-by-side to test for identical
> behavior whenever possible.  Despite all of this work, there will still be
> differences between IronPython 1.0 and CPython.  The most obvious
> difference is that IronPython is missing a number of standard C-based
> extension modules so things like "import bsddb" will fail.  We maintain a
> detailed list of differences between the two implementations and aim to
> reduce the size of this list in every release.
>
> IronPython has also striven for deep integration with the CLR.  For the
> implementation this is a great thing as it lets us take advantage of
> highly-tuned components developed for other languages such as the
> just-in-time compiler, garbage collector, debugging support, reflection,
> dynamic loading and more.  This integration is also valuable to IronPython
> developers as it lets them easily use any and all libraries built for .NET
> from their Python code.
>
> This is the 1.0 release of IronPython.  It's more complete and well tested
> than any other 1.0 product I have personally released in my
> career.  However, like any other software product it's not perfect.  You can
> search for known issues and let us know about any new ones that you find in
> our public bug database.  We're continuing to work on IronPython and we want
> your input on how to make 1.1 and future releases even better.
>
> It's been an exciting journey for me to see IronPython go from a rough
> prototype playing around with some ideas to a solid 1.0 release.  This
> never could have happened without all the people who've contributed to this
> project along the way.  My thanks go out to all the users who braved our
> early releases and passed along their problems and suggestions.  My thanks
> also go out to the amazing group of people here at Microsoft who've come to
> join this project and drive it to this quality 1.0 release.
>
> Shipping IronPython 1.0 isn't the end of the road, but rather the
> beginning.  Not only will we continue to drive IronPython forward but we're
> also looking at the bigger picture to make all dynamic languages deeply
> integrated with the .NET platform and with technologies and products built
> on top of it.  I'm excited about how far we've come, but even more excited
> by what the future holds!
>
> Thanks - Jim Hugunin (for the IronPython Team)
> _______________________________________________
> users mailing list
> users at lists.ironpython.com
> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>



-- 
/M:D

M. David Peterson
http://mdavid.name | http://www.oreillynet.com/pub/au/2354
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From hardcoded.software at gmail.com  Wed Sep 13 10:17:25 2006
From: hardcoded.software at gmail.com (Hardcoded Software)
Date: 13 Sep 2006 07:17:25 -0700
Subject: eval(repr(object)) hardly ever works
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <1158157045.593941.64050@i42g2000cwa.googlegroups.com>


Matthew Wilson wrote:
> I understand that idea of an object's __repr__ method is to return a
> string representation that can then be eval()'d back to life, but it
> seems to me that it doesn't always work.
>
> For example it doesn't work for instances of the object class:
>
> In [478]: eval(repr(object()))
> ------------------------------------------------------------
>    File "<string>", line 1
>      <object object at 0xf233e8>
>      ^
> SyntaxError: invalid syntax
>
> It seems to work for types like integers and dictionaries and lists,
> but not for much else.
>
> Any thoughts?
>
>
> --
> A better way of running series of SAS programs:
> http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles

I don't think that repr() is for eval(). repr() is for outputting a
string that represent the object and is not ambiguous. Example: print
'foo' == print u'foo' but print repr('foo') != print repr(u'foo')



From martin at v.loewis.de  Fri Sep 22 16:26:30 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 22 Sep 2006 22:26:30 +0200
Subject: Building things with setup.py
In-Reply-To: <A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<451368E9.10901@v.loewis.de>
	<A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>
Message-ID: <451446F6.5060807@v.loewis.de>

James Stroud schrieb:
>> What happens if you omit these flags?
> 
> Please see my last message to Robert Kern.

If you don't want me to help you, that's fine, then I won't.

I couldn't find an answer to this question in any of your
messages in this thread.

Still, it *should* work out of the box. If it doesn't, it
means there is an error somewhere. If you don't want to
help finding the error, that's fine, too (but please say
so, because that will constrain the solution space).

Regards,
Martin


From ilias at lazaridis.com  Mon Sep 18 23:23:03 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 18 Sep 2006 20:23:03 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <mailman.228.1158582176.10491.python-list@python.org>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
	<1158551070.407614.40030@m7g2000cwm.googlegroups.com>
	<mailman.228.1158582176.10491.python-list@python.org>
Message-ID: <1158636183.450000.121630@h48g2000cwc.googlegroups.com>

Steve Holden wrote:
> Ilias Lazaridis wrote:
...
> > http://www-128.ibm.com/developerworks/linux/library/l-pymeta.html
> >
> > I am not so much interested in old-style, as is start production with
> > python 2.4 (possibly even with python 2.5).
> >
>
> The fact remains that you won't be able to affect the built-in classes
> such as int and str - they are hard-coded in C (for CPython, at least),
> and so their metaclass is also implied and cannot be changed.

...except in C.

I assume the "root class" should be available/changeable in "C", too.

Do I have to change the sources directly, or does python provide
"C-level-extension/modication" mechanisms, which can be applied to
core-level classes, too?

Is the Python Object Model documented anywhere in a diagram, something
similar to this?:

http://case.lazaridis.com/wiki/RubyObjectModel

.



From skip at pobox.com  Mon Sep 25 22:16:26 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 21:16:26 -0500
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159235326.385036.233440@i3g2000cwc.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
Message-ID: <17688.36218.742554.867052@montanaro.dyndns.org>


    walter> It just doesn't seem like there is much demand for professional
    walter> python developers.

Keep an eye on this page:

    http://www.python.org/community/jobs/

and if you're so inclined, subscribe to the RSS feed of that page.  I think
Peter Kropf is processing 3-5 new postings per week.

Skip


From domulus at googlemail.com  Mon Sep 25 10:30:34 2006
From: domulus at googlemail.com (=?ISO-8859-1?Q?Dominik_M=FCller?=)
Date: Mon, 25 Sep 2006 16:30:34 +0200
Subject: installation of python-dev
In-Reply-To: <ef8m2u$qa6$1@sea.gmane.org>
References: <4e4935ac0609241334p617d8fabq9f6ce1e30883ee38@mail.gmail.com>
	<ef8m2u$qa6$1@sea.gmane.org>
Message-ID: <4e4935ac0609250730l568cefe4ld8b7ba39827a49ef@mail.gmail.com>

Yes, I should have included some more info from the start, sorry...

I'm running Suse 10.1. Python I installed from rpm, downloaded from
python.org.



---------- Forwarded message ----------
From: Fredrik Lundh <fredrik at pythonware.com>
Date: 25.09.2006 15:37
Subject: Re: installation of python-dev
To: python-list at python.org

Dominik M?ller wrote:

> I am running Python2.4.3; I need to install Python-dev (or does anybody
know
> an easier way to get distutils.core ? that's what I actually need...).

umm.  distutils is part of the standard library, so it should be part of the
core install.
what platform are you using, and where did you get the 2.4.3 kit ?

</F>





--
http://mail.python.org/mailman/listinfo/python-list
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From grahn+nntp at snipabacken.dyndns.org  Sat Sep  2 14:01:17 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 2 Sep 2006 18:01:17 GMT
Subject: Netstat Speed
References: <44f95c2c@127.0.0.1> <slrnefiqcj.j6l.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <slrnefjbu6.3bp.grahn+nntp@frailea.sa.invalid>

On Sat, 2 Sep 2006 13:22:59 +0200, Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:
> DarkBlue enlightened us with:
>> Following code works . 
>
> No it doesn't - it's indented badly. I guess you mean something like:
>
> def activeip(checkip):
>      # if there is any line returned we set activeb to 1 indicating that
>      # this ip is active during a netstat run   
>      activeb=0          
>      for line in os.popen("netstat -a -n | grep '%s'" % checkip) :
>          s=line
>          if s <>'' :
>             activeb=1
>      return activeb 
>
> Also try to use != instead of <>. Being equal or not has nothing to do
> with being larger or smaller.

Yeah, that took me a few seconds to mentally convert to !=. Personally, I'd
just write "if line:" in this case.

While we're at it, please write the documentation from a /user/ standpoint,
not as internal scribblings. And don't call the address 'checkip' -- that
makes it look like you pass a functor to the function. Maybe something like
this:

| def ip_is_active(addr):
|      """Return success if 'addr' shows up in the output from 'netstat -an'.
|      We assume that a suitable version of netstat exists.
|      """
|      activeb=0
|      ...

This doc string is vague -- but that's because it's unclear what the
function does and what you expect it to do.  I see half a dozen problems or
so, but that might be ok if its callers don't expect too much.

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From exarkun at divmod.com  Mon Sep  4 22:17:22 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 4 Sep 2006 22:17:22 -0400
Subject: asyncore.dispatcher stops listening
In-Reply-To: <dda874450609041903r5fa4c9c2gd75bcb3bb87af45e@mail.gmail.com>
Message-ID: <20060905021722.1717.1239515813.divmod.quotient.39468@ohm>

On Mon, 4 Sep 2006 19:03:09 -0700, Daniel Walton <walton.dan at gmail.com> wrote:
>I have been working on a problem for a full week now.  If someone
>could please help me it would be great.  Even a clue would be great at
>this point.  What I am seeing is quite a mystery.
>
>I have server written in python using asyncore.dispatcher.  It listens
>on port 9940 and does something like this on handle_accept
>
>    def handle_accept (self):
>        self.log("accept")
>        conn, addr = self.accept()
>        self.handlers += [asynchat.async_chat_subclass(conn,addr)]
>
>I launch the server and test the server.  Everything looks great aside
>from a few functions that are a bit slow.
>
>The server goes into use and receives some traffic for about 3 days
>and then it stops listening.  telneting to the port times out.
>clients (8 or so) that are connected time out.  The process is still
>running.  Its not taking lots of CPU or memory.  I can start a new
>server on the port without being told that something else is using it.
>
>When I send the server a kill -SIGINT  I get this call stack in the log
>Traceback (most recent call last):
>  File "./link_server.py", line 975, in ?
>    main(sys.argv)
>  File "./link_server.py", line 973, in main
>    asyncore.loop()
>  File "/usr/local/lib/python2.4/asyncore.py", line 192, in loop
>    poll_fun(timeout, map)
>  File "/usr/local/lib/python2.4/asyncore.py", line 122, in poll
>    r, w, e = select.select(r, w, e, timeout)
>KeyboardInterrupt

What does /proc/ say about the server's open file descriptors?  What
about r, w, e, and timeout?  What are their values?

Jean-Paul


From jjl at pobox.com  Thu Sep  7 18:21:45 2006
From: jjl at pobox.com (John J. Lee)
Date: Thu, 07 Sep 2006 22:21:45 GMT
Subject: [ANN] IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
	<ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
	<4m835vF4narnU1@uni-berlin.de>
Message-ID: <87wt8fmi6e.fsf@pobox.com>

"Diez B. Roggisch" <deets at nospam.web.de> writes:
[...re Scipy on IronPython...]
> No, you can't. I'm not sure if there are any bridging attempts being made,
> but in this respect IronPython is the same as Jython - a completely
> different runtime which executes its own byte-code. 

Haven't heard re Scipy &co specifically (I'd be very impressed if they
were even thinking about it), but I heard somebody was implementing
the ctypes API for IronPython.


John


From fccoelho at gmail.com  Tue Sep 26 16:51:14 2006
From: fccoelho at gmail.com (Flavio)
Date: 26 Sep 2006 13:51:14 -0700
Subject: f2py on windows tutorials
In-Reply-To: <mailman.730.1159299369.10491.python-list@python.org>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
	<mailman.504.1159044688.10491.python-list@python.org>
	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>
	<mailman.730.1159299369.10491.python-list@python.org>
Message-ID: <1159303874.746238.142120@h48g2000cwc.googlegroups.com>

Thank you Robert,

I was surprised that the setup.py was virtually identical to the one I
use for Linux. However I was not at all surprised when it didn't work.
;-)

It complains it can't find msvc:

No module named msvccompiler in numpy.distutils, trying from
distutils..
error: the .NET Framework SDK needs to be installed before building
extensions for Python.

any further help will be greatly appreciated...

Thanks again,

Fl?vio

Robert Kern wrote:
> Flavio wrote:
> > Its been a while since i Tried this and right now I have no access to a
> > windows
> > machine to try it and show you the error messages I was getting.
> >
> > I was using the latest version of Python Enthouhgt edition. But I was
> > trying to compile the fortran code directly with f2py.
> >
> > What I would like to have is a setup.py tailored to compile an f2py
> > extension on windows. Have you got one of these? if so please send it
> > to me and I can certainly figure out the rest.
>
>
> from numpy.distutils.core import setup, Extension
>
> setup(name='something',
>        ext_modules=[Extension('my_subroutines',
>                               sources=['wrapper.pyf', 'lib1.f', 'lib2.f'],
>                     )],
> )
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From fredrik at pythonware.com  Thu Sep 28 17:35:56 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 23:35:56 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <efhdt1$9a1$1@mlucom4.urz.uni-halle.de>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>	<mailman.901.1159469166.10491.python-list@python.org>
	<efhdt1$9a1$1@mlucom4.urz.uni-halle.de>
Message-ID: <efhf7q$vnm$1@sea.gmane.org>

Mirco Wahab wrote:

> - why doesn't have Python such a simple and useful thing as to_binstr(...)

useful?  really?  for what?

</F>



From smith.patrick__NOSPAM__ at gmail.com  Thu Sep 28 22:40:17 2006
From: smith.patrick__NOSPAM__ at gmail.com (Patrick Smith)
Date: Thu, 28 Sep 2006 22:40:17 -0400
Subject: wxPython and threading issue
Message-ID: <rI%Sg.124726$sS1.27151@read1.cgocable.net>

Hi,
I'm hoping someone here will be able to help as I've been struggling with
this problem for a few days now.

I'm working on an application that is creating a ProgressDialog, and then
creating a thread that runs a function from another module in the program.

The problem is, when the cancel button on the ProgressDialog is pressed, the
thread that was created continues to run.  How can I make it so that when
the cancel button on the dialog is clicked, the spawned thread dies?

thanks




From daniel.huangfei at gmail.com  Sat Sep 23 12:24:09 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 23 Sep 2006 09:24:09 -0700
Subject: anybody using python 2.5 that raises error while importing?
In-Reply-To: <1159021336.190735.215140@e3g2000cwe.googlegroups.com>
References: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>
	<1158935377.820149.242390@i42g2000cwa.googlegroups.com>
	<1159019033.982301.172480@m7g2000cwm.googlegroups.com>
	<1159021336.190735.215140@e3g2000cwe.googlegroups.com>
Message-ID: <1159028649.108575.295000@i3g2000cwc.googlegroups.com>

thank you so much for your help..
I've got no idea about pyd or dll stuff, started to learn python just
several weeks ago.
so the implementation rules of python extension module must have been
changed, for now, I have to wait for the new release of that module and
switch back to python 2.4 to get my work done.

thanks again..

daniel



From skip at pobox.com  Thu Sep  7 23:08:32 2006
From: skip at pobox.com (skip at pobox.com)
Date: Thu, 7 Sep 2006 22:08:32 -0500
Subject: what is java's System.currentTimeMillis() in python
In-Reply-To: <1157684203.531092.219390@m73g2000cwd.googlegroups.com>
References: <1157684203.531092.219390@m73g2000cwd.googlegroups.com>
Message-ID: <17664.57008.681848.182980@montanaro.dyndns.org>


    neoedmund>     public static native long currentTimeMillis();

    neoedmund> python's time.clock() time.time() return a float, i think
    neoedmund> it's not as handy as java's currentTimeMillis() any good
    neoedmund> solution?

How about

    int(time.clock() * 1000)

or

    int(time.time() * 1000)

?

Skip


From akameswaran at gmail.com  Thu Sep 14 10:30:19 2006
From: akameswaran at gmail.com (akameswaran at gmail.com)
Date: 14 Sep 2006 07:30:19 -0700
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <450930d6$0$22499$626a54ce@news.free.fr>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
	<450930d6$0$22499$626a54ce@news.free.fr>
Message-ID: <1158244219.019209.326140@e3g2000cwe.googlegroups.com>


Bruno Desthuilliers wrote:
> akameswaran at gmail.com wrote:
> > I wrote up a quick little set of tests, I was acutally comparing ways
> > of doing "case" behavior just to get some performance information.  Now
> > two of my test cases had almost identical results which was not at all
> > what I expected.  Ultimately I realized I don't really know how
> > literals are treated within the interpreter.
> >
> > The two implementations I was looking at were:
> >
> > class caseFunction(object):
> >     def __init__(self):
> >         self.caseDict = {'a':"retval = 'a'",
> > 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> >
> > "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
> >                          "i":"retval='i'"}
> >
> >     def doIt(self,a):
> >         exec(self.caseDict.get(a))
> >         return retval
>
> Err...  Why would you want to exec anything here ? Remember that
> Python's functions are objects too:
>
Largely because it was immaterial to what I am asking about here, which
is dictionary literals.  I was also curious about how much overhead
exec had - even on simple statements, and it's about as bad as I would
have guessed.  Finally - it's a little quicker to write out the exec
dictionary than all of the functions ;)

> def funcA(*args, **kw):
>   return "funcA called with %s %s" % (str(args), kw)
>
> def funcB(*args, **kw):
>   return "funcB called with %s %s" % (str(args), kw)
>
> def funcC(*args, **kw):
>   return "funcC called with %s %s" % (str(args), kw)
>
> def defaultFunc(*args, **kw):
>   return "defaultFunc called with %s %s" % (str(args), kw)
>
> class SwitchFunc(object):
>   def __init__(self, default, **kw):
>     self._default = default
>     self._switch = kw
>
>   # makes the object callable.
>   def __call__(self, case, *args, **kw):
>     func = self._switch.get(case, self._default)
>     return func(*args, **kw)
>
> switch = SwitchFunc(defaultFunc, a=funcA, b=funcB, c=funcC)
>
> for case in "abcX":
>   print switch(case, "foo", q=42)
>
Now I'm not sure what the value of "semi" abstraction is here.  If we
are going to make the class semi generic, might as well have it use
exec, then the function determined by the switch statement could be
dynamically changed at runtime(and run like a pig).  Otherwise, we need
to have those functions implemented so what do we gain?  I was also
going to say, why not make the functions instance methods, but --
surprise surprise - when I timed it out, the lookup was ever so
slightly slower for the instance methods.  I had to do about 100,000
loops of it for the speed difference to be definitive, but oddly enough
lookup to the module function was faster than looking up an instance
method.

> HTH
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in 'onurb at xiludom.gro'.split('@')])"



From wolfgang.keller.nospam at gmx.de  Sun Sep 24 08:12:33 2006
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: Sun, 24 Sep 2006 14:12:33 +0200
Subject: What is the best way to "get" a web page?
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
Message-ID: <0001HW.C13C42D1004FA3C6F0488530@news.individual.de>

> Can anyone point me to a tutorial or other reference on how to "get" all 
> of the html contents at a particular page? 

Why not use httrack?

http://www.satzbau-gmbh.de/staff/abel/httrack-py/

Sincerely,

Wolfgang Keller

-- 
My email-address is correct.
Do NOT remove ".nospam" to reply.



From bdesth.quelquechose at free.quelquepart.fr  Sat Sep 23 17:09:20 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 23 Sep 2006 23:09:20 +0200
Subject: Looking for opinions
In-Reply-To: <1158957281.793034.191730@m7g2000cwm.googlegroups.com>
References: <1158957281.793034.191730@m7g2000cwm.googlegroups.com>
Message-ID: <45159ef7$0$22860$626a54ce@news.free.fr>

crystalattice a ?crit :
> I've been working on a game for several months but now I'm thinking I
> may be going about it the wrong way.  It's an online RPG designed to
> recreate a pen & paper session, kind of like the OpenRPG project.
> 
> Originally I planned on doing something like OpenRPG with a Python app
> that contained everything.  But I'm thinking that approach may not be
> necessary.  Since the game would use the Internet for everyone to play
> it, maybe it would be easier/better to just make a web app w/ Python
> underpinnings.  That way I wouldn't have to worry about making a Python
> GUI and other "standalone" features that would have to be installed on
> each players computer; they could just interact via a web browser and
> IM.
> 
> The code I've made so far is just a text-based "proof-of-concept" for
> the character generation to make sure I have the logic correct.  I've
> only been designing a GUI for the last few weeks and trying different
> things like Tkinter and wxPython, so building a whole web app won't set
> me back any.
> 
> With that in mind, I'm looking for opinions from more experienced
> programmers.  For this project, do you think I should continue w/
> building a stand alone program or do you think making something out of
> Django/Turbogears would be better?
> 

I have few experience with RPG softwares, but if your "domain" logic si 
anything more than trivially complex, it's always better to keep it as 
decoupled as possible from the user interface (unless of course the user 
interface actually is the domain !-). FWIW, this doesn't prevent you 
from using a web framework as the front-end...


From phil_nospam_schmidt at yahoo.com  Wed Sep 27 09:29:32 2006
From: phil_nospam_schmidt at yahoo.com (Phil Schmidt)
Date: 27 Sep 2006 06:29:32 -0700
Subject: How to change menu text with Tkinter?
Message-ID: <1159363771.905537.224780@d34g2000cwd.googlegroups.com>

I am making a little Tkinter GUI app that needs to be in several
languages (english, french, etc.), adjustable at runtime via a menu
pick to select the language. The only way I can see to change text in
the menus entries is to destroy them and recreate them usiing different
labels. This seems very clunky though, and there must be a better way.
Can anyone offer any pointers or a short example for how to do this?

Thanks,
Phil



From ldo at geek-central.gen.new_zealand  Tue Sep 26 05:01:43 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 21:01:43 +1200
Subject: Printing a percent sign
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>
Message-ID: <efaq7s$rfd$6@lust.ihug.co.nz>

In message <1159230293.270822.50390 at d34g2000cwd.googlegroups.com>, John
Machin wrote:

> 1. Reasoning: How do you get a literal "'" into an SQL string constant?
> How do you get a literal "\" into a Python string constant? How do you
> get a literal "$" into some *x shell command lines? Do you detect a
> pattern?

None of which applies to escaping of % characters in format strings.


From anthra.norell at vtxmail.ch  Thu Sep 21 16:50:08 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Thu, 21 Sep 2006 22:50:08 +0200
Subject: newbe's re question
In-Reply-To: <1158796645.943655.180890@i3g2000cwc.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>	<mailman.322.1158749465.10491.python-list@python.org>	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>	<mailman.341.1158774359.10491.python-list@python.org>
	<1158796645.943655.180890@i3g2000cwc.googlegroups.com>
Message-ID: <4512FB00.1070008@vtxmail.ch>

Eric_Dexter at msn.com wrote:
> Frederic Rentsch wrote:
>   
>> Eric_Dexter at msn.com wrote:
>>     
>>> Frederic Rentsch wrote:
>>>
>>>       
>>>> Eric_Dexter at msn.com wrote:
>>>>
>>>>         
>>>>> All I am after realy is to change this
>>>>>
>>>>>  reline = re.line.split('instr', '/d$')
>>>>>
>>>>> into something that grabs any line with instr in it take all the
>>>>> numbers and then grab any comment that may or may not be at the end of
>>>>> the line starting with ; until the end of the line including white
>>>>> spaces..  this is a corrected version from
>>>>>
>>>>> http://python-forum.org/py/viewtopic.php?t=1703
>>>>>
>>>>> thanks in advance the hole routine is down below..
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> [code]
>>>>> def extractCsdInstrument (input_File_Name, output_File_Name,
>>>>> instr_number):
>>>>>
>>>>>     "takes an .csd input file and grabs instr_number instrument and
>>>>> creates output_File_Name"
>>>>>     f = open (input_File_Name , 'r')                #opens file passed
>>>>> in to read
>>>>>     f2 = open (output_File_Name, 'w')               #opens file passed
>>>>> in to write
>>>>>     instr_yes = 'false'                             #set flag to false
>>>>>
>>>>>     for line in f:                                  #for through all
>>>>> the lines
>>>>>       if "instr" in line:                           #look for instr in
>>>>> the file
>>>>>            if instr_yes == 'true':                    #check to see if
>>>>> this ends the instr block
>>>>>                break                                #exit the block
>>>>>
>>>>>            reline = re.line.split('instr', '/d$')     #error probily
>>>>> split instr and /d (decimal number into parts) $ for end of line
>>>>>            number = int(reline[1])                  #convert to a
>>>>> number maybe not important
>>>>>                 if number == instr_number:            #check to see if
>>>>> it is the instr passed to function
>>>>>                 instr_yes = "true":                 #change flag to
>>>>> true because this is the instr we want
>>>>>       if instr_yes = "true":                        #start of code to
>>>>> copy to another file
>>>>>            f2.write(f.line)                         #write line to
>>>>> output file
>>>>>
>>>>>     f.close                                         #close input file
>>>>>     f2.close
>>>>>
>>>>> [/code]
>>>>>
>>>>>
>>>>>
>>>>>           
>>>> Eric,
>>>>       From your problem description and your code it is unclear what
>>>> exactly it is you want. The task appears to be rather simple, though,
>>>> and if you don't get much useful help I'd say it is because you don't
>>>> explain it very well.
>>>>       I believe we've been through this before and your input data is
>>>> like this
>>>>
>>>>    data = '''
>>>>    <CsoundSynthesizer>;
>>>>      ; test.csd - a Csound structured data file
>>>>
>>>>    <CsOptions>
>>>>      -W -d -o tone.wav
>>>>    </CsOptions>
>>>>
>>>>    <CsVersion>    ;optional section
>>>>      Before 4.10  ;these two statements check for
>>>>      After 4.08   ;   Csound version 4.09
>>>>    </CsVersion>
>>>>
>>>>    <CsInstruments>
>>>>      ; originally tone.orc
>>>>      sr = 44100
>>>>      kr = 4410
>>>>      ksmps = 10
>>>>      nchnls = 1
>>>>      instr   1
>>>>          a1 oscil p4, p5, 1 ; simple oscillator
>>>>             out a1
>>>>        endin
>>>>    </CsInstruments>
>>>>
>>>>    <CsScore>
>>>>      ; originally tone.sco
>>>>      f1 0 8192 10 1
>>>>      i1 0 1 20000 1000 ;play one second of one kHz tone
>>>>      e
>>>>    </CsScore>
>>>>
>>>>    </CsoundSynthesizer>
>>>>
>>>> Question 1: Is this your input?
>>>> if yes:
>>>>     Question 1.1: What do you want to extract from it? In what format?
>>>> if no:
>>>>     Question 1.1: What is your input?
>>>>     Question 1.2: What do you want to extract from it? In what format?
>>>> Question 2: Do you need to generate output file names from the data?
>>>> (One file per instrument?)
>>>> if yes:
>>>>    Question 2.1: What do you want to make your file name from?
>>>> (Instrument number?)
>>>>
>>>>
>>>> Regards
>>>>
>>>> Frederic
>>>>
>>>>         
>>> I want to pass the file name to the subroutine and return a comment
>>> string if it is there maybe it should be simplier.  I probily should
>>> have the option of grabbing the comment in other related routines.  I
>>> am pretty ambitious with the main program.  I did notice some code in
>>> tcl that would be usefull to the app If I compile it..  I am probily
>>> not ready for that though..
>>>
>>> http://www.dexrow.com
>>>
>>>
>>>       
>> Eric,
>>      I'm beginning to enjoy this. I'm sure we'll sort this out in no
>> time if we proceed methodically. Imagine you are a teacher and I am your
>> student. This is a quiz. I have to take it and you need to explain to me
>> the problem you want me to solve. If you don't explain it clearly, I
>> will not know what I have to do and cannot do the quiz. If you answer my
>> questions above, your description of the problem will be clear and I can
>> take the quiz. Okay?
>>
>> Frederic
>>     
>
>
> instr   1
>          a1 oscil p4, p5, 1 ; simple oscillator    ; comment is
> sometimes here
>             out a1
>        endin
>
>
> I need to know the file I wan't to grab this from I need to grab this
> out of the larger file and put it into it's own file,  I need to know
> what instr the user wants.  I need to know what file to put it into and
> it would be usefull to have the comment line returned (if any).
>
> I did just get python essential reference 3rd edition..  If there is a
> better reference on just the subject I am after I would be glad to grab
> it when I get cash again.
>
>   

Eric,

   Tell us the story. Are you a student? A musician? What are you doing 
with these files? Where do you get them from? What for?

Frederic



From rcs at bgoark.no  Wed Sep 27 17:21:26 2006
From: rcs at bgoark.no (baalbek)
Date: Wed, 27 Sep 2006 23:21:26 +0200
Subject: Survival of the fittest
In-Reply-To: <pan.2006.09.27.03.06.55.347276@comcast.net>
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
	<pan.2006.09.27.03.06.55.347276@comcast.net>
Message-ID: <451aeb3d$0$8002$c83e3ef6@nn1-read.tele2.net>

Thomas Bartkus wrote:
> Okay.  How did your stated "policy" leave you still wasting 20-30% of your
> programming efforts on other languages?
> 
> We would be curious to know about those things you can do in C++
> but can't do in Python.
> (Doubting) Thomas Bartkus


Nothing to do with what C++ can do that Python can't, but using 
technology where there are C++ libs only.



For example, I do quite a bit of CAD (Autocad) programming; the 
ObjectARX library supports C++ only.

Baalbek


From XX.XmcX at XX.XmclaveauX.com  Fri Sep 29 06:43:29 2006
From: XX.XmcX at XX.XmclaveauX.com (MC)
Date: Fri, 29 Sep 2006 12:43:29 +0200
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
	<1159492244.834784.76380@h48g2000cwc.googlegroups.com>
Message-ID: <mn.eafb7d691a11731e.46195@XX.XmclaveauX.com>

Thanks.
The essential, is that peoples (& you) can understand. Bbut, perso, I 
don't understand the message translated (much unknowed words...)

-- 
@-salutations

Michel Claveau




From bkovitz at acm.org  Wed Sep 20 02:35:34 2006
From: bkovitz at acm.org (Ben Kovitz)
Date: 19 Sep 2006 23:35:34 -0700
Subject: Tkinter on Python 2.4 on Mac OS X?
In-Reply-To: <jwjw-26FFAC.08525215092006@news.isp.giganews.com>
References: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>
	<1158164457.310716.207170@h48g2000cwc.googlegroups.com>
	<jwjw-4A259D.13195013092006@news.isp.giganews.com>
	<1158246366.973809.206040@i42g2000cwa.googlegroups.com>
	<jwjw-26FFAC.08525215092006@news.isp.giganews.com>
Message-ID: <1158734134.476457.226080@b28g2000cwb.googlegroups.com>

Bill Williams wrote:
> In article <1158246366.973809.206040 at i42g2000cwa.googlegroups.com>,
>  "Ben Kovitz" <bkovitz at acm.org> wrote:
>
> > Maybe this is a better question for me to ask:  *How* did you get
> > Python 2.4 running with Tkinter on OS X?
>
> I didn't do anything special to get Python 2.4 and Tkinter running on OS
> 10.3.9. Just downloaded and installed MacPython OSX 2.4.1 dmg (Mar 31,
> 2005) and TclTk Aqua 8.4.10 dmg (June 6 2005). The IDE About box says
> IDE 1.0.2, Python 2.4.1 #2 Mar 31 2005 build 1666, and it all just
> works, including saving a script as an applet.
>
> The point about applets is that one nugget of information points out
> that the graphics environments like Tkinter conflict with the IDE
> graphics environment, so you can't run them under the IDE, and saving as
> applets was the easiest way to get stuff to run standalone.

Thanks for the info, Bill.  Now I understand the need to create an
applet.  I want to run stand-alone anyway, and the IDE was getting
"spinning beachball forever".  So it looks like I just have some sort
of incompatibility between installed versions.

I was going hang my head in resignation and try reinstalling
everything, but I noticed that Python 2.5 got officially released
today, so I installed it to use on something else.  I tried the Tkinter
"Hello World" app, and works!  Hooray!  So now I'm in business.

Ben Kovitz



From martin at v.loewis.de  Fri Sep 22 16:29:15 2006
From: martin at v.loewis.de (=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 22 Sep 2006 22:29:15 +0200
Subject: distutils on Windows with VC++ 8
In-Reply-To: <Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
	<45136400.5030600@v.loewis.de>
	<Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <4514479B.5070808@v.loewis.de>

Rob Williscroft schrieb:
> Download the 1.1 SDK:
> 
> <url:http://www.microsoft.com/downloads/details.aspx?familyid=9B3A2CA6-
> 3647-4070-9F41-A333C6B9181D&displaylang=en>
> 
> yes it does have 90 odd megabytes of stuff you don't want but the C/C++
> compiler is in there.

That's yet another option. Somebody reported that the compiler in the
.NET SDK won't support generating optimized code, though. That's a
problem for some people.

> I think the VS 2003 toolkit is a framework for extending Visual Studio 
> 2003, IOW a bunch of .NET dlls, some examples and a helpfile (no 
> compiler).

I don't think so. It was (as it's no longer officially available) a
command-line only version of the compiler. In any case, it is
(or was) different from the .NET SDK.

Regards,
Martin


From ilias at lazaridis.com  Wed Sep  6 08:03:59 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 6 Sep 2006 05:03:59 -0700
Subject: CONSTRUCT -
In-Reply-To: <mailman.15.1157463576.5279.python-list@python.org>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<ede27d$pi9$1@news.albasani.net>
	<1157299581.865287.225320@p79g2000cwp.googlegroups.com>
	<edgpj6$vf1$1@news.albasani.net>
	<1157462054.163916.57060@m73g2000cwd.googlegroups.com>
	<mailman.15.1157463576.5279.python-list@python.org>
Message-ID: <1157544239.668100.46310@d34g2000cwd.googlegroups.com>

Steve Holden wrote:
> lazaridis_com wrote:
> > Georg Brandl wrote:
> >>lazaridis_com wrote:
> >>>Georg Brandl wrote:
> >>>>lazaridis_com wrote:
> >>>>
> >>>>>I would like to fulfill the following task:
> >>>>>
> >>>>>The construct:
> >>>>>
> >>>>>if __name__ == '__main__':
> >>>>>
> >>>>>should be changed to something like:
> >>>>>
> >>>>>if identifier.name == '__main__':
> >>>>>
> >>>>>The term "identifier" should be selected based on the meaning of the
> >>>>>__double-underscore-enclosure__ of the entities.
> >>>
> >>>>import sys
> >>>>class _identifier:
> >>>>    def __getattr__(self, name):
> >>>>        return sys._getframe(1).f_globals['__%s__' % name]
> >>>>identifier = _identifier()
> >>>
> >>>ok, I understand.
> >>>
> >>>this one would work with modules.
> >>>
> >>>but how would look a more general solution, which would work with
> >>>objects too?
> >>
> >>Why can't you try to come up with something yourself? You should have
> >>had enough exposure to the Python language by now.
> >
> > I am not a (python) domain expert.
> >
> > Thus I am asking here for available standard-solutions, before I
> > implement an own solution.
> >
> There is no standard solution for the problem you mention.

I see.

Can one point me to the relevant documentation?

Or at least give me the relevant key-words / Search Phrases?

I remember to have located a relevant PEP, but I cannot find it again.

.



From tal.no.no.spam at gmail.com  Fri Sep  1 14:26:24 2006
From: tal.no.no.spam at gmail.com (Tal Einat)
Date: 1 Sep 2006 11:26:24 -0700
Subject: disgrating a list
In-Reply-To: <mailman.10264.1157134224.27775.python-list@python.org>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
Message-ID: <1157135184.608704.277720@h48g2000cwc.googlegroups.com>


Tim Chase wrote:
> I'm not sure if '__iter__' is the right thing to be looking for,
> but it seems to work at least for lists, sets, dictionarys (via
> their keys), etc.  I would use it because at least then you know
> you can iterate over it

AFAIK and as seen throughout posts on c.l.py, the best way to check if
something is iterable is:

try:
    iter(obj)
except TypeError:
    <obj is not iterable>
else:
    <obj is iterable>

- Tal



From ldo at geek-central.gen.new_zealand  Tue Sep 26 05:39:14 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 21:39:14 +1200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>	<efaj9p$fqq$2@lust.ihug.co.nz>	<efakif$idf$1@lust.ihug.co.nz>	<mailman.644.1159256238.10491.python-list@python.org>
	<efapp8$rfd$3@lust.ihug.co.nz>
	<mailman.652.1159263385.10491.python-list@python.org>
Message-ID: <efase7$16m$1@lust.ihug.co.nz>

In message <mailman.652.1159263385.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Lawrence D'Oliveiro wrote:
> 
>  > SQL databases like MySQL are _designed_ for efficiency.
> 
> unlike the Python data types, you mean ?

Did I say it was unlike anything?


From frank at chagford.com  Fri Sep  8 05:53:48 2006
From: frank at chagford.com (Frank Millman)
Date: 8 Sep 2006 02:53:48 -0700
Subject: Question about subclassing - version 2
In-Reply-To: <45013a2d$0$27222$636a55ce@news.free.fr>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
	<1157702727.358576.24280@m79g2000cwm.googlegroups.com>
	<45013a2d$0$27222$636a55ce@news.free.fr>
Message-ID: <1157709228.066561.5810@h48g2000cwc.googlegroups.com>


Bruno Desthuilliers wrote:
> Frank Millman wrote:
> > bearophileHUGS at lycos.com wrote:
> >> There aren't abstract classes in Python. They are all
> >> concrete.
> (snip)
> > I use the term 'abstract class' in the abstract sense :-)
> >
> > Say I have three classes where 90% of the attributes and methods are
> > common. It makes sense to create a base class with these attributes and
> > methods, and turn each of the three classes into a subclass which
> > inherits from the base class and overrides the bits that are unique to
> > each one.
> >
> > This is what I call an abstract class. Maybe there is a more correct
> > term.
>
> Depends if instanciating this base class would make any sense.
>

It would not make sense, no.

I have not gone to the trouble of raising NotImplementedError - the
methods that the subclasses *must* override just have a 'pass'
statement. I guess it would be more correct to raise the error, as it
would give me a quicker indication of an error if I happened to omit
one, but in practice I would find out pretty quickly anyway.

Frank



From aisaac0 at verizon.net  Sat Sep 23 15:09:34 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Sat, 23 Sep 2006 19:09:34 GMT
Subject: "what's new" missing
Message-ID: <ODfRg.183$Kw1.8@trnddc05>

Where does one get the
"What's New" document for Python 2.5?
http://docs.python.org/dev/whatsnew/whatsnew25.html
pretends to hold it, but the links are corrupt.

Thanks,
Alan Isaac




From bradfordh at gmail.com  Tue Sep 19 20:57:47 2006
From: bradfordh at gmail.com (Tempo)
Date: 19 Sep 2006 17:57:47 -0700
Subject: xlrd number of rows in worksheet (was: Re: Pre-defining an action
	to take when an expected error occurs)
In-Reply-To: <450D03F1.3000509@lexicon.net>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
	<1158303569.603466.36130@e3g2000cwe.googlegroups.com>
	<1158339345.603379.61610@b28g2000cwb.googlegroups.com>
	<450D03F1.3000509@lexicon.net>
Message-ID: <1158713867.736359.73760@i42g2000cwa.googlegroups.com>

It worked. Those two functions (usefulness_of_cells &
number_of_good_rows) seem to work flawlessly...knock on wood. I have
run a number of different Excel spreadsheets through the functions, and
so far the functions have a 100% acuracy rating. The acuracy rating is
based on the functions' returned number of cells containing text,
excluding a space as text,  against the actual, hand counted number of
cells with text. Thank you John Machin for all of your help. I am using
these two functions, with your name tagged to them both. Let me know if
that's a problem. Thank you again.



From rhymes at myself.com  Thu Sep 14 18:22:03 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Fri, 15 Sep 2006 00:22:03 +0200
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com> <4502F115.6080202@v.loewis.de>
	<1158192360.269240.61800@h48g2000cwc.googlegroups.com>
	<4508D322.3080202@v.loewis.de>
	<1158224279.869752.110830@i42g2000cwa.googlegroups.com>
	<4509CD26.6020102@v.loewis.de>
Message-ID: <1hlojkh.cb3c079rf7n2N%rhymes@myself.com>

"Martin v. L?wis" <martin at v.loewis.de> wrote:
> That, of course, assumes that there is a VS 2007 release
> sufficiently before Python 2.6.

I just spoke with an MVP for .NET (so nothing official obviously) and he
told me the next VS version will ship after Windows Vista for sure and
that (he mentioned the actual alpha status of the available components)
will be likely in the second half of the year or maybe later. 

Anyway after the release of Vista we will all know something more I
guess.

HTH

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From http  Wed Sep  6 16:29:33 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 13:29:33 -0700
Subject: threading support in python
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
	<7xr6ypjr0r.fsf@ruckus.brouhaha.com>
	<1157566938.399058.242620@e3g2000cwe.googlegroups.com>
Message-ID: <7xwt8goi1e.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > We had that debate already (PEP 343).  Yes, there is some sloppy
> > current practice by CPython users that relies on the GC to close the
> > db conn.
> 
> This point is unrelated to with or ref-counting.  Even the standard
> library will close file objects when they are GC'd.

I don't think so.  AFAIK, there is no such thing as "when they are
GC'd" in the language spec.  There is, at best, "if they are GC'd",
not "when".  You are not guaranteed that GC ever takes place.  At
best, those destructors run when the application totally shuts down,
as the process is about to exit, but I'm not sure whether the spec
promises even that.

> If this is not acceptable, it's a major change; 

It is guaranteeing GC running at any particular time that would be a
major change.  There is no such guarantee right now; there is just an
implementation artifact in CPython that has led to careless habits
among some users.


From dh.evolutionnext at gmail.com  Wed Sep 27 01:56:56 2006
From: dh.evolutionnext at gmail.com (Danno)
Date: 26 Sep 2006 22:56:56 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <1159336615.533487.11890@k70g2000cwa.googlegroups.com>


Xah Lee wrote:
> Computer Language Popularity Trend
>
> This page gives a visual report of computer languages's popularity, as
> indicated by their traffic level in newsgroups. This is not a
> comprehensive or fair survey, but does give some indications of
> popularity trends.
>
> http://xahlee.org/lang_traf/index.html
>
>   Xah
>   xah at xahlee.org
> ? http://xahlee.org/

Wow, java is a low level industrial language? ;)



From srikrishnamohan at gmail.com  Fri Sep  8 12:58:24 2006
From: srikrishnamohan at gmail.com (km)
Date: Fri, 8 Sep 2006 22:28:24 +0530
Subject: threading support in python
In-Reply-To: <slrnefvkhh.vt7.apardon@rcpc42.vub.ac.be>
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
	<7xr6ypjr0r.fsf@ruckus.brouhaha.com>
	<1157566938.399058.242620@e3g2000cwe.googlegroups.com>
	<slrnefvkhh.vt7.apardon@rcpc42.vub.ac.be>
Message-ID: <f4cc03640609080958g33d62d76j7239b03b95a48154@mail.gmail.com>

Where is Guido ? would be great to hear  his opinion on GIL/ GC issues in
future versions of Python.

regards,
KM

----------------------------------------------------------------------------

On 7 Sep 2006 08:02:57 GMT, Antoon Pardon <apardon at forel.vub.ac.be> wrote:
>
> On 2006-09-06, sjdevnull at yahoo.com <sjdevnull at yahoo.com> wrote:
> > Paul Rubin wrote:
> >> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> >> > (1) I think is here to stay, if you're going to tell programmers that
> >> > their destructors can't make program-visible changes (e.g. closing
> the
> >> > database connection when a dbconn is destroyed), that's a _huge_
> change
> >> > from current practice that needs serious debate.
> >>
> >> We had that debate already (PEP 343).  Yes, there is some sloppy
> >> current practice by CPython users that relies on the GC to close the
> >> db conn.
> >
> > This point is unrelated to with or ref-counting.  Even the standard
> > library will close file objects when they are GC'd.
>
> This is not totally true. My experience is that if you use the
> tarfile module any tarfile that was opened for appending or
> writing risks being corrupted if it isn't closed explicedly.
>
> --
> Antoon Pardon
> --
> http://mail.python.org/mailman/listinfo/python-list
>
-------------- next part --------------
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From ironfroggy at gmail.com  Sat Sep 16 01:08:54 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Sat, 16 Sep 2006 01:08:54 -0400
Subject: generators/iterators: filtered random choice
In-Reply-To: <1158373045.896571.167880@h48g2000cwc.googlegroups.com>
References: <1158373045.896571.167880@h48g2000cwc.googlegroups.com>
Message-ID: <76fd5acf0609152208w5140c3fcu2ee7067634cca611@mail.gmail.com>

On 15 Sep 2006 19:17:25 -0700, gry at ll.mit.edu <gry at ll.mit.edu> wrote:
> I want a function (or callable something) that returns a random
> word meeting a criterion.  I can do it like:
>
> def random_richer_word(word):
>     '''find a word having a superset of the letters of "word"'''
>     if len(set(word) == 26): raise WordTooRichException, word
>     while True:
>         w = random.choice(words)
>         if set(w) - set(word):  # w has letters not present in word
>             return w
>
> This seems like a perfect application for generators or iterators,
> but I can't quite see how.  Any suggestions?

Simply change the return to yield. The function will return a
generator which will iterate over each new word found. I would fix it
up a bit more than that, however. For example, create the set for
word's letters before the loop, and keep a set of previously yielded
words, so you dont use the same one twice.

Alternatively, maybe you meant that you still want to get a single
word, but you want to iterate until its done, so its non-blocking in
nature. In that case, you might still yield, but add an else block to
yield None, and keep iterating until it yields something evaluating
true. In either case I would be pre-computing that set of subset
letters.


From claudio.grondi at freenet.de  Thu Sep  7 16:31:43 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 22:31:43 +0200
Subject: Extracting text from a string
In-Reply-To: <1157655647.414091.249170@i3g2000cwc.googlegroups.com>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
	<edpou4$41s$1@newsreader2.netcologne.de>
	<1157654883.477932.142850@p79g2000cwp.googlegroups.com>
	<edpq1n$64u$1@newsreader2.netcologne.de>
	<1157655647.414091.249170@i3g2000cwc.googlegroups.com>
Message-ID: <edpvjc$gsf$1@newsreader2.netcologne.de>

Tempo wrote:
> This is the output I get:
> 
> 
> 
> 
>>>>prices
> 
> [<span class="sale">
> 					$14.99
> 				</span>, <span class="sale">
> 					$27.99
> 				</span>, <span class="sale">
> 					$66.99
> 				</span>, <span class="sale">
> 					$129.99
> 				</span>, <span class="sale">
> 					$254.99
> 				</span>]
> 
> 
I think, guessing your knowledge level in Python, the best solution for 
you to start with and learn some Python basics will be :

 >>> prices.split()[2]
'$14.99'
 >>> prices.split()[6]
'$27.99'
 >>> prices.split()[10]
'$66.99'
 >>> prices.split()[14]
'$129.99'
 >>> prices.split()[18]
'$254.99'

Claudio Grondi


From MrJean1 at gmail.com  Mon Sep 25 17:22:11 2006
From: MrJean1 at gmail.com (MrJean1)
Date: 25 Sep 2006 14:22:11 -0700
Subject: python interpreter on solaris 10
In-Reply-To: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
Message-ID: <1159219331.241132.209890@i42g2000cwa.googlegroups.com>

FWIIW,

On my stock Ultra 20 / Solaris 10 / Opteron box, python, idle, etc.
just run fine provided /usr/sfw/bin is in your PATH environment
variable.  That is Python 2.3.3, however.

In addition, I installed the Python 2.4.3 build for Solaris from
ActiveState and python, idle, etc. run without any glitch as well.
More at <http://www.activestate.com/Products/ActivePython/?mp=1>

Lastly, I downloaded the very latest Python 2.5 release and tried to
build that using the SUN compilers.  There are some issues with that
since this is an Opteron and not a SPARC processor.

/Jean Brouwers


sam wrote:
> dear all,
>
> having spent the last couple of weeks getting to grips with python on
> windows, i am in the position of trying to make the transition to my
> newly arrived ultra 20.
>
> however, although there are plenty of files with idle somewhere in the
> title, idle.py (which i assume is the interpreter) will not open, as
> there is 'no installed viewer.' surely sun have not installed python
> only for it to unusable? i may well be completely off base here, as
> using unix is still very much a mystery to me.
>
> i have tried /usr/sfw/lib/python at the command prompt. it worked
> yesterday, but having now moved and restored the python2.3 file to its
> original position, i find the same command prompt failing to work. have
> i messed it up by moving it around?
>
> my workstation remains a shiny box which does naught but hum
> malevolently. is there hope?
> 
> thank you,
> 
> sam



From rhymes at myself.com  Thu Sep 14 06:36:49 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 14 Sep 2006 12:36:49 +0200
Subject: Why not event-driven packages in other than the main thread?
References: <eeb6go$kfk$1@news.uit.no> <4msmn3F7ni7iU1@individual.net>
	<eebaua$m0d$1@news.uit.no>
Message-ID: <1hlnmz2.p8f1a11ne4f9gN%rhymes@myself.com>

Tor Erik <torerik81 at gmail.com> wrote:
> If you have two event-based frameworks, both needing to run in the main
> thread, such as Tkinter and Twisted, you have a problem

Twisted supports Tkinter:
http://twistedmatrix.com/projects/core/documentation/howto/choosing-reac
tor.html#auto14

It's better to use GUI with a real reactor available like GTK2 anyway...

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From exarkun at divmod.com  Fri Sep  1 12:53:22 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Fri, 1 Sep 2006 12:53:22 -0400
Subject: Newbie question involving buffered input
In-Reply-To: <FCCAC8CB56A9C14482D07A3E50AFBEE8553C@winter-heart.wintersheart.net>
Message-ID: <20060901165322.1717.1712346308.divmod.quotient.36048@ohm>

On Fri, 1 Sep 2006 09:31:11 -0700, Caolan <caolan at ldmf.net> wrote:
>I am executing the code below on a Windows XP system and if I enter > 2 characters it buffers the input and the call to sys.stdin.flush does not flush the input, it remains buffered.

You cannot flush input.  The flush method only relates to output.  The
*other* side of the file has to flush *its* output in order for you to
see it as input.

On Linux, the termios module provides a way to tell the system not to do
any buffering on a file descriptor.  pywin32 may expose equivalent
functionality for Windows.

Jean-Paul


From ingo.bear_NOSPAM at freenet.de  Sun Sep 24 07:23:03 2006
From: ingo.bear_NOSPAM at freenet.de (Ingo Linkweiler)
Date: Sun, 24 Sep 2006 13:23:03 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <pan.2006.09.24.11.04.35.54758@gmx.net>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
Message-ID: <ef5pqm$bc8$1@news01.versatel.de>

> The usual way to cope with this is sending out confirmation mails.  No
> need to check if the address is syntactically correct beforehand.

yes, I do this allready. But it would be nice to do some checks before 
to avoid wrong user inputs.


From yohell at ifm.liu.se  Fri Sep  1 04:26:07 2006
From: yohell at ifm.liu.se (Joel Hedlund)
Date: Fri, 01 Sep 2006 10:26:07 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <44f78549$0$11377$636a55ce@news.free.fr>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<44f78549$0$11377$636a55ce@news.free.fr>
Message-ID: <ed8qj8$foe$1@news.lysator.liu.se>

Bruno >> Your email address seem to be wrong. I tried to reply to you 
directly in order to avoid thread bloat but my mail bounced.

Thanks for the quick reply though. I've skimmed through some docs on your 
suggestions and I'll be sure to read up on them properly later. But as I 
said to Robert Kern in this thread, this does not really seem resolve the
problem of setting an approprate level of validation.

How do you do it? Please reply to the group if you can find the time.

Cheers!
/Joel Hedlund

Bruno Desthuilliers wrote:
> Joel Hedlund a ?crit :
>> Hi!
>>
>> The question of type checking/enforcing has bothered me for a while, 
> (snip)
>> I've also whipped up some examples in order to put the above questions 
>> in context and for your amusement. :-)
> (snip)
>> These are the attached modules:
>>
>> * nocheck_module.py:
>>   As the above example, but with docs. No type checking.
>>
>> * property_module.py
>>   Type checking of data members using properties.
>>
>> * methodcheck_module.py
>>   Type checking of args within methods.
>>
>> * decorator_module.py
>>   Type checking of args using method decorators.
>>
>> * maximum_security_module.py
>>   Decorator and property type checking.
> 
> You forgot two other possible solutions (that can be mixed):
> - using custom descriptors
> - using FormEncode
> 
> 


From gdamjan at gmail.com  Tue Sep 19 04:19:52 2006
From: gdamjan at gmail.com (Damjan)
Date: Tue, 19 Sep 2006 10:19:52 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
	<eeo2bh$q6$1@news.albasani.net>
Message-ID: <450fa7ab$0$75034$14726298@news.sunsite.dk>

>>> __metaclass__ = whatever
>>> 
>>> at the top of each module whose classes are to get the new behavior.
>> 
>> I think '__metaclass__ = whatever' affects only the creation of classes
>> that would otherwise be old-style classes?
> 
> Wrong.
> 
> If you set __metaclass__ = type, every class in that module will be
> new-style.

 >>> from UserDict import UserDict
 >>> type(UserDict)
 <type 'classobj'>
 >>> class A(UserDict):
 ...   pass
 >>> type(A)
 <type 'classobj'>
 >>> __metaclass__ = type
 >>> class B(UserDict):
 ...   pass
 >>> type(B)
 <type 'classobj'>

It seems that NOT every class in my module will be a new style class,
especially those that inherit from other old-style classes in other
modules.



-- 
damjan


From jjl at pobox.com  Sat Sep 16 20:15:44 2006
From: jjl at pobox.com (John J. Lee)
Date: Sun, 17 Sep 2006 00:15:44 GMT
Subject: Mechanoid Web Browser - Recording Capability
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
Message-ID: <87irjnxs9b.fsf@pobox.com>

"Seymour" <seymour.morris at gmail.com> writes:

> I am trying to find a way to sign onto my Wall Street Journal account
> (http://online.wsj.com/public/us) and automatically download various
> financial pages on stocks and mutual funds that I am interested in
> tracking.  I have a subscription to this site and am trying to figure
[...]
> My questions are:
> 1. Is there an easier way to grab these pages from a password protected
> site, or is the use of Mechanoid a reasonable approach?

This is the first time I heard of anybody using mechanoid.  As the
author of mechanize, of which mechnoid is a fork, I was always in the
dark about why the author decided to fork it (he hasn't emailed
me...).

I don't know if there's any activity on the mechanoid project, but I'm
certainly still working on mechanize, and there's an active mailing list:

http://wwwsearch.sourceforge.net/

https://lists.sourceforge.net/lists/listinfo/wwwsearch-general


> 2. Is there an easy way of recording a web surfing session in Firefox
> to see what the browser sends to the site?  I am thinking that this
> might help me better understand the Mechanoid commands, and more easily
> program it.  I do a fair amount of VBA Programming in Microsoft Excel
> and have always found the Macro Recording feature a very useful
> starting point which has greatly helped me get up to speed.

With Firefox, you can use the Livehttpheaders extension:

http://livehttpheaders.mozdev.org/


The mechanize docs explain how to turn on display of HTTP headers that
it sends.


Going further, certainly there's at least one HTTP-based recorder for
twill, which actually watches your browser traffic and generates twill
code for you (twill is a simple language for functional testing and
scraping built on top of mechanize):

http://twill.idyll.org/

http://darcs.idyll.org/%7Et/projects/scotch/doc/


That's not an entirely reliable process, but some people might find it
helpful.

I think there may be one for zope.testbrowser too (or ZopeTestBrowser
(sp?), the standalone version that works without Zope) -- I'm not
sure.  (zope.testbrowser is also built on mechanize.)  Despite the
name, I'm told this can be used for scraping as well as testing.

I would imagine that it would be fairly easy to modify or extend
Selenium IDE to emit mechanize or twill or zope.testbrowser (etc.)
code (perhaps without any coding, I used too many Firefox Selenium
plugins and now forget which had which features).  Personally I would
avoid using Selenium itself to actually automate tasks, though, since
unlike mechanize &c., Selenium drags in an entire browser, which
brings with it some inflexibility (though not as bad as in the past).
It does have advantages though: most obviously, it knows JavaScript.


John


From lycka at carmen.se  Mon Sep 11 04:31:46 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 11 Sep 2006 10:31:46 +0200
Subject: [ANN] RuPy 2007 - Python & Ruby Conference
In-Reply-To: <slrnefqkvu.os3.fname.sname.lname@atos.wmid.amu.edu.pl>
References: <slrnefqkvu.os3.fname.sname.lname@atos.wmid.amu.edu.pl>
Message-ID: <ee36ti$s14$1@wake.carmen.se>

Jakub Piotr Nowak wrote:
> RuPy 2007
> Python & Ruby Conference
> 
> Poznan, Poland
> April 7-8, 2007

Are you aware of the EuroPython Conference which
will take place in Vilnius three months later?


From mikeowens at gmail.com  Tue Sep 12 14:37:43 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 13:37:43 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158083242.566897.180710@h48g2000cwc.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<1158078714.772319.52690@i42g2000cwa.googlegroups.com>
	<mailman.375.1158080942.5279.python-list@python.org>
	<1158083242.566897.180710@h48g2000cwc.googlegroups.com>
Message-ID: <df2316bd0609121137l1cce0738j27c6e73e6c3d7b@mail.gmail.com>

On 12 Sep 2006 10:47:22 -0700, mensanator at aol.com <mensanator at aol.com> wrote:

> So you admit that Richard Hipp's characterization of SQL was
> rude. And now that we've established what you are, we're just
> haggling over price.

No, you've just managed to try and take the heat off of yourself. I
never said anything about Richard. Good try. More sinned against than
sinning doesn't help you at all.


From http  Tue Sep  5 04:03:51 2006
From: http (Paul Rubin)
Date: 05 Sep 2006 01:03:51 -0700
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
Message-ID: <7xejuqhh94.fsf@ruckus.brouhaha.com>

Steve Holden <steve at holdenweb.com> writes:
> You write as though the GIL was invented to get in the programmer's
> way, which is quite wrong. It's there to avoid deep problems with
> thread interaction. Languages that haven't bitten that bullet can bite
> you in quite nasty ways when you write threaded applications.

And yet, Java programmers manage to write threaded applications all
day long without getting bitten (once they're used to the issues),
despite usually being less skilled than Python programmers ;-).

> Contrary to your apparent opinion, the GIL has nothing to do with
> reference-counting.

I think it does, i.e. one of the GIL's motivations was to protect the
management of reference counts in CPython, which otherwise wasn't
thread-safe.  The obvious implementation of Py_INCREF has a race
condition, for example.  The GIL documentation at

   http://docs.python.org/api/threads.html

describes this in its very first paragraph.

> > Will the madness never end?
> 
> This reveals an opinion of the development team that's altogether too
> low. I believe the GIL was introduced for good reasons.

The GIL was an acceptable tradeoff when it was first created in the
previous century.  First of all, it gave a way to add threads to the
existing, non-threadsafe CPython implementation without having to
rework the old code too much.  Second, Python was at that time
considered a "scripting language" and there was less concern about
writing complex apps in it, especially multiprocessing apps.  Third,
multiprocessor computers were themselves exotic, so people who wanted
to program them probably had exotic problems that they were willing to
jump through hoops to solve.

These days, even semi-entry-level consumer laptop computers have dual
core CPU's, and quad Opteron boxes (8-way multiprocessing using X2
processors) are quite affordable for midrange servers or engineering
workstations, and there's endless desire to write fancy server apps
completely in Python.  There is no point paying for all that
multiprocessor hardware if your programming language won't let you use
it.  So, Python must punt the GIL if it doesn't want to keep
presenting undue obstacles to writing serious apps on modern hardware.


From alpersoyler at yahoo.com  Fri Sep  1 06:33:55 2006
From: alpersoyler at yahoo.com (alper soyler)
Date: Fri, 1 Sep 2006 03:33:55 -0700 (PDT)
Subject: Question about ftplib
In-Reply-To: <mailman.22.1157104805.17649.python-list@python.org>
Message-ID: <20060901103355.74796.qmail@web56509.mail.re3.yahoo.com>

I am trying to get '.pep' files from the ftp.genome.jp/pub/kegg/genomes/??? directories (???=directory names) with the below script. However, after downloading 121 files (I have to download 300 more), it gave me the time out error message:

Traceback (most recent call last):
  File "ftp1.0.py", line 18, in ?
    for filename in ftp.nlst():
  File "/usr/lib/python2.4/ftplib.py", line 448, in nlst
    self.retrlines(cmd, files.append)
  File "/usr/lib/python2.4/ftplib.py", line 396, in retrlines
    conn = self.transfercmd(cmd)
  File "/usr/lib/python2.4/ftplib.py", line 345, in transfercmd
    return self.ntransfercmd(cmd, rest)[0]
  File "/usr/lib/python2.4/ftplib.py", line 324, in ntransfercmd
    conn.connect(sa)
  File "<string>", line 1, in connect
socket.error: (110, 'Connection timed out')

How can I continue from the last download or  is there any way to arrange the time? 

Script:

from ftplib import FTP

def handleDownload(block):
    file.write(block)
    print ".",
 
ftp = FTP('ftp.genome.jp')

print ftp.login()
 
directory = '/pub/kegg/genomes'
ftp.cwd(directory)

k=0
for direct in ftp.nlst():
    curdir = '%s/%s' % (directory, direct)
    ftp.cwd(curdir)
    for filename in ftp.nlst():
        if not filename.endswith('.pep'): continue
        file = open(filename, 'wb')
        ftp.retrbinary('RETR %s/%s' % (curdir, filename), handleDownload)
        file.close()
    k=k+1    

print ftp.close()


----- Original Message ----
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Today's Topics:

   1. Re: python loops (stdazi)
   2. Re: Classes referencing each other (Georg Brandl)
   3. Re: Python style: to check or not to check args and data
      members (Joel Hedlund)
   4. Re: Classes referencing each other (Manuel Bleichner)
   5. Re: python loops (bearophileHUGS at lycos.com)

From: "stdazi" <stdazi at gmail.com>
Precedence: list
MIME-Version: 1.0
To: python-list at python.org
References: <NYOBGCEXSMTP21ETwCv0005d3ba at nyobgcexsmtp21.uswin.ad.vzwcorp.com>
    <mailman.10211.1157052834.27775.python-list at python.org>
    <slrnefeft1.9bt.sybrenUSE at schuimige.stuvel.eu>
In-Reply-To: <slrnefeft1.9bt.sybrenUSE at schuimige.stuvel.eu>
Date: 1 Sep 2006 02:34:48 -0700
Message-ID: <1157103288.783306.106850 at p79g2000cwp.googlegroups.com>
Content-Type: text/plain; charset="iso-8859-1"
Subject: Re: python loops
Message: 1


`range' is especially useful for iterating over long sequences ;-)

    for i in range(0,100000000000000) :
OverflowError: range() result has too many items



Sybren Stuvel wrote:
> Michael.Coll-Barth at VerizonWireless.com enlightened us with:
> > I thought the xrange was preferred?  for x in xrange(length):
>
> True. It doesn't create the entire list, like range does. range(1000)
> creates a 1000-element list. xrange(1000) just iterates through the
> appropirate values.
>
> > The information contained in this message and any attachment may be
> > proprietary, confidential, and privileged or subject to the work
> > product doctrine and thus protected from disclosure.  If the reader
> > of this message is not the intended recipient, or an employee or
> > agent responsible for delivering this message to the intended
> > recipient, you are hereby notified that any dissemination,
> > distribution or copying of this communication is strictly
> > prohibited.  If you have received this communication in error,
> > please notify me immediately by replying to this message and
> > deleting it and all copies and backups thereof.  Thank you.
>
> And how are we supposed to interpret this? Copying this communication
> may be prohibited, but both email and usenet messages are copied all
> the time. Without that, both systems fail miserably.
>
> Sybren
> --
> The problem with the world is stupidity. Not saying there should be a
> capital punishment for stupidity, but why don't we just take the
> safety labels off of everything and let the problem solve itself?
>                                              Frank Zappa



Content-Transfer-Encoding: 7bit
From: Georg Brandl <g.brandl-nospam at gmx.net>
Precedence: list
MIME-Version: 1.0
To: python-list at python.org
References: <mailman.10236.1157100375.27775.python-list at python.org>
In-Reply-To: <mailman.10236.1157100375.27775.python-list at python.org>
Date: Fri, 01 Sep 2006 11:50:42 +0200
Message-ID: <ed8vpi$tej$1 at news.albasani.net>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Subject: Re: Classes referencing each other
Message: 2


Manuel Bleichner wrote:
> Hello list,
> 
> I have searched for some time now, but no result...
> I'm having the following problem:
> 
> In a module I have a huge number of classes of the form:
> 
> class A(object):
>    connected_to = [B, C]
>    <other attributes...>
> 
> class B(object)
>    connected_to = [C]
>    <other attributes...>
> 
> class C(object)
>    connected_to = [A]
>    <other attributes...>
> 
> As you see, classes A and B reference classes that
> are not yet defined when the class is being defined.
> It will raise a NameError: 'B'.
> 
> I know i could solve this by leaving out the definition
> of 'connected_to' in A and attach it to the class later on by
> A.connected_to = [B, C]
> but I would like to avoid this, because in the module
> there are about 50 classes that have to be altered from time
> to time and it's just incredibly ugly if I have to look for
> the attribute definitions in more than one place.

You could move all connections to a central location after the
class definitions, such as

class A: pass
class B: pass
class C: pass

connections = {A: (B, C), B: (C,), C: (A,)}

Georg


Content-Transfer-Encoding: 7bit
From: Joel Hedlund <yohell at ifm.liu.se>
Precedence: list
MIME-Version: 1.0
To: python-list at python.org
References: <ed7q6j$9mh$1 at news.lysator.liu.se>
    <44f78549$0$11377$636a55ce at news.free.fr>
    <ed8qj8$foe$1 at news.lysator.liu.se>
    <44f7fc6b$0$26046$626a54ce at news.free.fr>
In-Reply-To: <44f7fc6b$0$26046$626a54ce at news.free.fr>
Date: Fri, 01 Sep 2006 11:52:26 +0200
Message-ID: <ed8vl3$h08$1 at news.lysator.liu.se>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Subject: Re: Python style: to check or not to check args and data members
Message: 3


> And while we're at it : please avoid top-posting.

Yes, that was sloppy. Sorry.

/Joel


Content-Transfer-Encoding: Quoted-Printable
From: "Manuel Bleichner" <manuel at prolink.de>
Precedence: list
MIME-Version: 1.0
To: python-list at python.org
References: <mailman.10236.1157100375.27775.python-list at python.org>
    <Xns983167DE33BB3duncanbooth at 127.0.0.1>
In-Reply-To: <Xns983167DE33BB3duncanbooth at 127.0.0.1>
Date: Fri, 01 Sep 2006 11:56:07 +0200
Message-ID: <op.te61vtd858416w at merkur.intern.prolink.de>
Content-Type: text/plain; format=flowed; delsp=yes; charset=iso-8859-15
Subject: Re: Classes referencing each other
Message: 4


Thanks for your answer :)

> You could use a function:
>
> class A(object):
>    @staticmethod
>    def connected_to(): return [B, C]
>    <other attributes...>

I already thought about such a solution, but since
my code has to be compatible with python 2.3, i would
have to use the connected_to = staticmethod(connected_to)
syntax, which bloats the code and makes it quite unreadable.


> or just store the names of the classes and do a similar fixup once they  
> are
> all defined:
>
> class A(object):
>    connected_to = ['B', 'C']
>    <other attributes...>
>
> for cls in globals().values():
>     if (type(cls) is type and
>         hasattr(cls, 'connected_to')):
>         cls.connected_to = [globals()[c] for c in cls.connected_to ]

This solution seems good to me. It won't work for me as it is,
because the structure of the classes is actually a bit more
complex, but it pushed me in the right direction.

Thanks again,
Manuel


From: bearophileHUGS at lycos.com
Precedence: list
MIME-Version: 1.0
To: python-list at python.org
References: <1157050085.120921.31840 at h48g2000cwc.googlegroups.com>
    <JcGJg.21533$ED.7604 at read2.cgocable.net>
    <1157051115.635459.215920 at p79g2000cwp.googlegroups.com>
    <1157051784.609953.196100 at h48g2000cwc.googlegroups.com>
In-Reply-To: <1157051784.609953.196100 at h48g2000cwc.googlegroups.com>
Date: 1 Sep 2006 02:56:59 -0700
Message-ID: <1157104618.899811.216640 at p79g2000cwp.googlegroups.com>
Content-Type: text/plain; charset="iso-8859-1"
Subject: Re: python loops
Message: 5


Kay Schluehr:
> I hate ii ;)

It's not nice looking, I agree. A more explicit name is often better.
But I think ii is better than i because you can find it in the code
 (with the Find command of the editor or grep) more easily than i.

Bye,
bearophile



-- 
http://mail.python.org/mailman/listinfo/python-list



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From grante at visi.com  Fri Sep 15 10:35:30 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 14:35:30 -0000
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<450a6ba9$0$31654$626a54ce@news.free.fr>
Message-ID: <12glehhtpl7tf20@corp.supernews.com>

On 2006-09-15, Christophe <chris.cavalaria at free.fr> wrote:

> Initiate an UDP connection from the client to the server and
> have the server send back the UDP packets to the address you
> get in the "recvfrom" result.

There's no such thing as a "UDP connection", so I don't
understand what you're suggesting.

-- 
Grant Edwards                   grante             Yow!  By MEER biz doo
                                  at               SCHOIN...
                               visi.com            


From robin at NOSPAMreportlab.com  Wed Sep  6 19:19:15 2006
From: robin at NOSPAMreportlab.com (Robin Becker)
Date: Wed, 06 Sep 2006 23:19:15 +0000
Subject: No ValueError for large exponents?
In-Reply-To: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
References: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
Message-ID: <44FF5773.40501@jessikat.plus.net>

enigmadude wrote:
> As many have heard, IronPython 1.0 was released. When I was looking
> through the listed differences between CPython and IronPython, the
> document mentioned that using large exponents such as 10 **
> 735293857239475 will cause CPython to hang, whereas IronPython will
> raise a ValueError. Trying this on my own machine, it did indeed seem
> to cause CPython to hang. In cases such as this, should this be
> considered a bug in the CPython implementation that needs to be fixed?
> Or is there a reason for this, such as consideration of future changes
> and language definition vs language implementation, etc.?
> 
I suspect the hang may be python actually trying to work out the
1 followed by 735293857239475 zeroes. Perhaps IronPython has a forward 
looking algorithm that knows when to give up early.
-- 
Robin Becker


From ezx at localhost.localdomain  Tue Sep 12 22:38:44 2006
From: ezx at localhost.localdomain (ezx)
Date: 13 Sep 2006 10:38:44 +0800
Subject: need some guild for embeded python
Message-ID: <87bqpkmqx7.fsf@bartuer.3322.org>

i want to use python in my linux phone ,motorola e680i,
i think i can use a embeded python interpretor on that phone .
some one has good idea?

Hai



From ilias at lazaridis.com  Fri Sep  1 11:46:43 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 1 Sep 2006 08:46:43 -0700
Subject: SQLObject or SQLAlchemy?
References: <A4GJg.2722$No6.53312@news.tufts.edu>
Message-ID: <1157125603.455324.23490@b28g2000cwb.googlegroups.com>

John Salerno wrote:
> Are there any major differences between these two? It seems they can
> both be used with TurboGears, and SQLAlchemy with Django. I'm just
> wondering what everyone's preference is, and why, and if there are even
> more choices for ORM.
>
> Thanks.

You can review the Persit Case, which will shortly evaluate the stated
ORM's:

http://case.lazaridis.com/wiki/Persist

It is possibly of importance to remember some requirements which should
be relevant for an persistency mechanism targetting an OO language:

Requirements

    * Uses standard OO Terminology on the API side
          o free of SQL/Relational terminology for ORM Tools
    * Transparency (minimal or no difference to standard objects of the
language)
          o Inheritance
    * Includes Automated Schema Evolution Support
          o Development Schema Evolution (focusing on simplicity and
conveniency etc.)
          o Production Schema Evolution (focusing on integrity,
stability etc.)
    * Support Standard ODBMS API's
    * Support of Standards within the language-domain (e.g. Python)



From kay.schluehr at gmx.net  Thu Sep 14 10:32:46 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 14 Sep 2006 07:32:46 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
Message-ID: <1158244366.085181.7810@i42g2000cwa.googlegroups.com>


Carl Banks wrote:
> metaperl wrote:
> > -->  python -i
> > >>> class = "algebra"
> >   File "<stdin>", line 1
> >     class = "algebra"
> >           ^
> > SyntaxError: invalid syntax
> > >>>
> >
> >
> > Why isn' t the parser smart enough to see that class followed by an
> > identifier is used for class definition but class followed by equals is
> > a simple assignment?
>
> Hmm.  Someone called "metaPERL" is asking why Python doesn't have a
> more complicated grammar.  Why does this not surprise me?  :)

Yeah. But elimination of all keywords and replacement by punctuation is
clearly an alternative. One might just start with:

@class X(object):
    @def __init__(self):
       @print "an X"

and move on to:

@% X(object):
    @_ _init__(self):
       >> "an X"

That's all still LL(1) parsable.



From larry.bates at websafe.com  Mon Sep 11 10:18:18 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 09:18:18 -0500
Subject: A cross platform systray icon
In-Reply-To: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>
References: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>
Message-ID: <4505702A.1080709@websafe.com>

Nick Craig-Wood wrote:
> Does anyone have some hints / tips / experience with making a cross
> platform systray icon?  It should work on Windows, Gnome and KDE at
> minimum.
> 
> I've seen the win32all code which is very similar to the C code I've
> written before for Windows.  It would be a small irritation to have to
> integrate its event loop with whichever GUI framework I'm using for
> the rest of it though.
> 
> I don't know how to make a systray under KDE/Gnome though, but I think
> freedesktop has made it a lot easier now.  I didn't manage to find a
> python example - does anyone have one?
> 
> Ideally I'd like someone to tell me that PyQT, tkinter or PyGTK does
> it all for me, but from my searching on the subject I doubt it is
> going to be that easy!
> 
> Thanks
Google turned this up.

http://radio.weblogs.com/0110159/gems/systray_py.txt

Hope it helps.

-Larry


From vatamane at gmail.com  Fri Sep 29 22:32:19 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 29 Sep 2006 19:32:19 -0700
Subject: DAT file compilation
In-Reply-To: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
Message-ID: <1159583539.610613.259850@h48g2000cwc.googlegroups.com>

You can always use pickle. Have a script that reads your folder with
the media, insert the images and sounds into arrays or your own special
classes then use pickle to dump them to a .dat file. The user gets just
one .dat file.

When your program runs, it reads the object with the data from the
disk, no need to translate from a special data format, instantiate
objects, fill those objects with data and so on, because your "frozen"
Python objects are good to be used as soon as they are loaded.  Note:
this might speed up things a little during initialization of your
program.

Also, you can use cPickle for a much faster pickle (but check out the
constraints imposed by cPickle in the Python documentation).

Hope this helps,
-Nick Vatamaniuc



Jay wrote:
> Is there a way through python that I can take a few graphics and/or
> sounds and combine them into a single .dat file?  If so, how?  And how
> can I access the data in the .dat file from inside the python script?



From johnjsal at NOSPAMgmail.com  Tue Sep 26 15:38:07 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 26 Sep 2006 19:38:07 GMT
Subject: a different question: can you earn a living with *just* python?
Message-ID: <zkfSg.30$1n3.400@news.tufts.edu>

It's a nice thought that a person can earn a living programming with 
Python, which is fun enough to use just for its own sake. But for 
someone like me (i.e. no programming experience) it's always a little 
disheartening to see that most (if not all) job descriptions that ask 
for Python still require some C/C++ or other language knowledge. I 
suppose this isn't an issue if you studied CS in college, because you 
would have been exposed to many languages.

But what if you are an expert Python program and have zero clue about 
other languages? Can you still earn a living that way, or do most/all 
companies require multiple language proficiency?

(I suppose this isn't exactly a Python problem, either. I'm sure even 
companies that don't use Python still use multiple languages. Maybe it 
isn't a good idea to focus entirely on a single language, depending on 
the job at hand.)


From http  Sat Sep 30 04:07:44 2006
From: http (Paul Rubin)
Date: 30 Sep 2006 01:07:44 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <7xk63l7p67.fsf@ruckus.brouhaha.com>

Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> writes:
> I must say that the for/else construct is a LOT more readable than the
> rewritten alternatives.

They are all pretty ugly.  I prefer the genexp version with a
hypothetical "is_empty" function:

     all_heights = (block.height for block in stack if block.is_marked())
     if is_empty(all_heights):
        raise SomeError("No marked block")
     heights = sum(all_heights)

Python generators don't really work the right way for this though.

I've been fooling around with Haskell, so these kinds of constructions
seems more natural to me than explicit for loops.


From D.Sinang at spi-bpo.com  Tue Sep 19 23:32:51 2006
From: D.Sinang at spi-bpo.com (Sinang, Danny)
Date: Wed, 20 Sep 2006 11:32:51 +0800
Subject: Hiding / showing windows in Macs
Message-ID: <0594D1BDF04FBC4B8F29E454DDE6E4AA02A0A993@spi-mail2003.spitech.com>

Hello,
 
How do we hide and show windows in Macs ?
 
Regards,
Danny
 
 
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From kay.schluehr at gmx.net  Sat Sep  9 03:00:32 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 9 Sep 2006 00:00:32 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.32.1157478476.5279.python-list@python.org>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
Message-ID: <1157785232.730286.318470@b28g2000cwb.googlegroups.com>


skip at pobox.com wrote:

> I wouldn't be at all surprised if the pysqlite author operated under that
> assumption.  That the Python developers didn't pick up on the issue is not
> surprising.  I'm not sure how many of them are (py)sqlite users, probably
> relatively few.
>
> Skip

Who has reviewed sqlite/pysqlite after all? Reading the passage in the
sqlite FAQ I can hardly believe that passing errors silently and
coercing everything to string when it fails to be coerced to INTEGER
although INTEGER was an invariant declared in the create command is on
par with Pythons design philosophy. In other cases doctoral
dissertations are written about whether a keyword or some punctuation
shall be used for decorator syntax and in this case everything must be
rushed into the code base of the standard library?



From wildemar at freakmail.de  Sun Sep 17 15:03:07 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sun, 17 Sep 2006 21:03:07 +0200
Subject: Hardlinks on NTFS
In-Reply-To: <450d95fc$0$25912$ba4acef3@news.orange.fr>
References: <mailman.208.1158512901.10491.python-list@python.org>
	<450d95fc$0$25912$ba4acef3@news.orange.fr>
Message-ID: <450D9BEB.7050505@freakmail.de>

M?ta-MCI wrote:
> Here, a copy of a message send on anither newsgroup (by me).
> 
> Summary on hardlink & junction-point.
> [snip]
> http://support.microsoft.com/Default.aspx?kbid=205524

Yeah, I know :). Thanks a lot, anyway. There's also fsutils, which I 
thought about using.
Creating the links really isn't a problem, I just don't want to worry 
about which platform I'm on.

bye
wildemar


From srikrishnamohan at gmail.com  Tue Sep 12 08:26:17 2006
From: srikrishnamohan at gmail.com (km)
Date: Tue, 12 Sep 2006 17:56:17 +0530
Subject: variable update
Message-ID: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>

Hi all
Is there any handy untility for checking if  a variable is populated at
runtime ?
regards,
KM
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From aahz at pythoncraft.com  Mon Sep 25 09:21:28 2006
From: aahz at pythoncraft.com (Aahz)
Date: 25 Sep 2006 06:21:28 -0700
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
	<mailman.451.1158926238.10491.python-list@python.org>
	<ef0uur$aa1$1@mouse.otenet.gr>
Message-ID: <ef8l4o$ho1$1@panix3.panix.com>

In article <ef0uur$aa1$1 at mouse.otenet.gr>,
Ilias Lazaridis  <ilias at lazaridis.com> wrote:
>
>Have those old style classes any benefits?

Yes, if you want your code to run on Python 2.1 and earlier.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From steve at holdenweb.com  Fri Sep 22 00:21:45 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 00:21:45 -0400
Subject: Strange behaviour of 'is'
In-Reply-To: <87psdozu2n.fsf@benfinney.id.au>
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
	<87psdozu2n.fsf@benfinney.id.au>
Message-ID: <eevob8$abu$2@sea.gmane.org>

Ben Finney wrote:
> "Fijoy George" <tofijoy at yahoo.co.in> writes:
> 
> 
>>I am a bit perplexed by the following behaviour of the 'is' comparator
> 
> 
> In summary: you are seeing implementation details that the language
> specification explicitly allows to vary by implementation.
> 
> 
>>My understanding was that every literal is a constructure of an
>>object.  Thus, the '2.' in 'x = 2.' and the '2.' in 'x is 2.' are
>>different objects.  Therefore, the comparison yields false.
> 
> 
> There's no "thus" about it. Any implementation may use the same object
> or different objects to represent any two values that are equal. This
> allows different optimisations to be performed on different platforms,
> without breaking the specified behaviour.
> 
> 
>>But my understanding does not explain the result of the second
>>comparison.  According to the experiment, y[0] and y[1] are the same
>>object!
>>
>>Does anyone know an explanation for this?
> 
> 
> The explanation is:
> 
> Two objects compare *equal* if their '__eq__' method says they are. In
> practice, this means their *values* are the same.
> 
> Two objects compare *identical* if the 'id()' function says they
> are. In practice, this means they are the *same object*.
> 
> The relationship between "same object" and "same value" is entirely up
> to the implementation to decide, by any simple or complex criteria it
> chooses, and there's nothing in the specification that requires it to
> be consistent at the program level. This is, among other reasons, to
> allow optimisations that don't change the language specification.
> 
> No general promise is made about the relationship between those two
> comparisons. Don't use them as if they were the same operation,
> because the implementation isn't restricted to meet that promise.
> 
Absolutely correct. It would be more interesting to discuss how the 
output from these statements varied between (say) CPython, Jython and 
Iron Python. At the moment the discussion is indeed about insignificant 
implementation trivia.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bernhard.voigt at gmail.com  Mon Sep  4 16:32:02 2006
From: bernhard.voigt at gmail.com (bernhard.voigt at gmail.com)
Date: 4 Sep 2006 13:32:02 -0700
Subject: Linear regression in 3 dimensions
References: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
	<mailman.10279.1157182064.27775.python-list@python.org>
Message-ID: <1157401922.417285.76870@m79g2000cwm.googlegroups.com>

Hi Robert,

I'm using the scipy package for such problems. In the submodule
scipy.optimize there is an implmentation of a least-square fitting
algorithm (Levenberg-Marquardt) called leastsq.

You have to define a function that computes the residuals between your
model and the data points:

import scipy.optimize

def model(parameter, x, y):
    a, b, c = parameter
    return a*x + b*y + c

def residual(parameter, data, x, y):
    res = []
    for _x in x:
        for _y in y:
            res.append(data-model(parameter,x,y)
    return res

params0 = [1., 1.,1.]
result = scipy.optimize.leastsq(resdiual, params0, (data,x,y))
fittedParams = result[0]

If you haven't used numeric, numpy or scipy before, you should take a
look at an introduction. It uses some nice extended array objects,
where you can use some neat index tricks and compute values of array
items without looping through it.

Cheers! Bernhard



Robert Kern wrote:
> wirecom at wirelessmeasurement.com wrote:
> > Hi all,
> >
> > I am seeking a module that will do the equivalent of linear regression in
> > 3D to yield a best fit a plane through a set of points (X1, Y1, Z1), (X1,
> > Y1, Z1),... (Xn, Yn, Zn).
> >
> > The resulting equation to be of the form:
> >
> >  Z = aX + bY + c
> >
> > The function I need would take the set of points and return a,c & c Any
> > pointers to existing code / modules would be very helpful.
>
> Well, that's a very unspecified problem. You haven't defined "best."
>
> But if we make the assumption that you want to minimize the squared error in Z,
> that is minimize
>
>    Sum((Z[i] - (a*X[i] + b*Y[i] + c)) ** 2)
>
> then this is a standard linear algebra problem.
>
> In [1]: import numpy as np
>
> In [2]: a = 1.0
>
> In [3]: b = 2.0
>
> In [4]: c = 3.0
>
> In [5]: rs = np.random.RandomState(1234567890)  # Specify a seed for repeatability
>
> In [6]: x = rs.uniform(size=100)
>
> In [7]: y = rs.uniform(size=100)
>
> In [8]: e = rs.standard_normal(size=100)
>
> In [9]: z = a*x + b*y + c + e
>
> In [10]: A = np.column_stack([x, y, np.ones_like(x)])
>
> In [11]: np.linalg.lstsq?
> Type:           function
> Base Class:     <type 'function'>
> String Form:    <function lstsq at 0x6df070>
> Namespace:      Interactive
> File:
> /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/numpy-1.0b2.dev3002-py2.4-macosx-10.4-ppc.egg/numpy/linalg/linalg.py
> Definition:     np.linalg.lstsq(a, b, rcond=1e-10)
> Docstring:
>      returns x,resids,rank,s
>      where x minimizes 2-norm(|b - Ax|)
>            resids is the sum square residuals
>            rank is the rank of A
>            s is the rank of the singular values of A in descending order
>
>      If b is a matrix then x is also a matrix with corresponding columns.
>      If the rank of A is less than the number of columns of A or greater than
>      the number of rows, then residuals will be returned as an empty array
>      otherwise resids = sum((b-dot(A,x)**2).
>      Singular values less than s[0]*rcond are treated as zero.
>
>
> In [12]: abc, residuals, rank, s = np.linalg.lstsq(A, z)
>
> In [13]: abc
> Out[13]: array([ 0.93104714,  1.96780364,  3.15185125])
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From gagsl-py at yahoo.com.ar  Thu Sep 28 21:21:33 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 22:21:33 -0300
Subject: Fwd: RE: [Python-Help] Python Help
Message-ID: <7.0.1.0.0.20060928215529.06becdf0@yahoo.com.ar>

Forwarding full message to the Python list:

>Hello, I am trying to create a script. I have most of it wrote, but it
>isn't working like it should. Could you please take a look and let me
>know whats wrong with it? What happens is that there is an array that is
>created and I verified the information goes in there by sending what was
>in the pullerList[i] to an output file. The output file looks like this:
>
>PATCH_NUMBER: 2_3_1
>BUG_NUMBER: 8711
>FEATURE_AFFECTED: Source Build.xml
>OVERVIEW: new features added to the build.xml"
>PATH:IPMDFCommons/Source
>FILE:build.xml
>
>Below is the script, which I want to go through the pullerList list and
>look at the first line and see if it equals N/A, 2_3_1, or 2_3. as you
>can see if it equals n/a it exits, if it equal 2_3_1, then it opens that
>specific text file and writes what I have there, etc. But my code isn't
>creating the text file or doing what it is suppose to. Any ideas?
>
>
>patchnumber = ""
>for line in pullerList:
>     line = line.strip()
>     if line.startswith('PATCH_NUMBER:'):
>         patchnumber = line[17:] == 'N/A'
>     elif line.startswith('PATCH_NUMBER:'):
>         patchnumber = line[17:] == '2_3_1'
>     elif line.startswith('PATCH_NUMBER:'):
>         patchnumber = line[17:] == '2_3'
>if patchnumber == 'N/A':
>     sys.exit(0)
>elif patchnumber == '2_3_1':
>     ftemp = open("C:/CVSAutoMailerPY/Patch_2_3_1.txt","a")
>     ftemp.write(sys.argv[1] + "/" + sys.argv[2])
>     ftemp.write("hi")
>     sys.exit(0)
>elif patchnumber == '2_3':
>     ftemp = open("C:/CVSAutoMailerPY/Patch_2_3.txt","a")
>     ftemp.write(sys.argv[1] + "/" + sys.argv[2])
>     ftemp.write("hi")
>     sys.exit(0)


The pullerList loop is wrong. You can verify it if you print 
patchNumber at the end of the loop. It appears you were playing 
guessing games with it... :)
Suggestion: Write the body of your script inside a function, so you 
can test it *outside* the cvsnt environment. After you are rather 
convinced it works as intended, try it in the real situation.

Try this:

for line in pullerList:
     line = line.strip()
     if line.startswith('PATCH_NUMBER:'):
         patchnumber = line[13:].strip()

Notice the 13 (17 was wrong). Better, to avoid having to count 
characters -very prune to error-, try this version:

for line in pullerList:
     line = line.strip()
     if ':' in line:
         key, value = line.split(':',1)
         if key=='PATCH_NUMBER'
             patchnumber = value.strip()
         if key=='ANOTHER'
             whatever = value.strip().lower()

Here we split the line on the ":" character; key is the text on the 
left, value the remaining text on the right.
If you are using Python 2.5, the partition() string method would be 
useful here.


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From mayfart at w-4.de  Wed Sep  6 14:35:31 2006
From: mayfart at w-4.de (Kai Mayfarth)
Date: Wed, 06 Sep 2006 20:35:31 +0200
Subject: a Pywin Outlook adress Book Question
In-Reply-To: <mailman.70.1157534998.5279.python-list@python.org>
References: <mailman.70.1157534998.5279.python-list@python.org>
Message-ID: <edn4dm$2p7$1@news01.versatel.de>



> 
> Although now I Google a little more, it looks like AddressEntryFilter
> might well do what you want. Worth a look, anyway :)
> 
> TJG

Big Thx for your answer. I found some infos about the 
AddressEntryFilter. Its that what i was searching for, BUT
its very limited it cant search for the last changed field, it can only 
search a small number of filds so its seems there is no other solution 
then searching in Python.





From wolfgang.keller.nospam at gmx.de  Thu Sep 14 10:17:07 2006
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: Thu, 14 Sep 2006 16:17:07 +0200
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
Message-ID: <0001HW.C12F31030003B482F0509530@news.individual.de>

> Are there any other concurrency options I've not discovered yet?

PyMPI?

Ironpython?

Sincerely,

Wolfgang Keller

-- 
My email-address is correct.
Do NOT remove ".nospam" to reply.



From deets at nospam.web.de  Tue Sep  5 11:46:44 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 05 Sep 2006 17:46:44 +0200
Subject: are there any lib for receive hotmail ?
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>
	<ONXKg.8550$o42.6314@tornado.texas.rr.com>
	<1157467698.407373.273750@d34g2000cwd.googlegroups.com>
Message-ID: <4m5kf4F4hppiU1@uni-berlin.de>

???? wrote:

> poplib cannot receive hotmail.

Not true:

http://www.macworld.com/news/2002/06/18/hotmail/index.php

You need to pay for that, but they do offer pop.

And receiving hotmail (or any outher webmail) using scraping techniques is a
daunting task, to say the least - you should forget about that IMHO.

Diez


From jstroud at mbi.ucla.edu  Thu Sep 21 01:14:40 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 05:14:40 GMT
Subject: view page source or save after load
In-Reply-To: <mailman.373.1158814163.10491.python-list@python.org>
References: <mailman.373.1158814163.10491.python-list@python.org>
Message-ID: <4dpQg.3614$IA.2226@newssvr11.news.prodigy.com>

zephron2000 wrote:
> Hey,
> 
> I need to either:
> 
> 1. View the page source of a webpage after it loads
> 
> or
> 
> 2. Save the webpage to my computer after it loads (same as File > Save
> Page As)
> 
> urllib is not sufficient (using urlopen or something else in urllib
> isn't going to do the trick)
> 
> Any ideas?
> 
> Thanks,
> Lara
> 
> 
> 

I happen to be tweaking a module that does this as your question came 
in. The relevant lines are:

fetchparams = urllib.urlencode(fetchparams)
wwwf = urllib.urlopen("?".join([baseurl, fetchparams]))
afile = open(filename, "w")
afile.write(wwwf.read())
afile.close()

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From fonnesbeck at gmail.com  Wed Sep 20 17:25:34 2006
From: fonnesbeck at gmail.com (Chris Fonnesbeck)
Date: Wed, 20 Sep 2006 17:25:34 -0400
Subject: strange unittest issue
Message-ID: <723eb6930609201425q7b1cdc4co82c101bf94719a8@mail.gmail.com>

I have a Python module that I have set up with some unit testing code, which
is simply a class that subclasses unittest.TestCase. Strangely, however, I
am having some issues trying to call the code. Specifically, if I do the
following:

>>> from PyMC import MCMC
>>> MCMC.unittest.main()

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK

However, the following works:

>>> from PyMC.MCMC import *
>>> unittest.main()

The unit test runs as expected. This seems odd, since the former should be
the preferred syntax, as we are told the "from foo import *" syntax is to be
avoided.

Any idea why this is not working as expected?

C.

-- 
Chris Fonnesbeck + Atlanta, GA + http://trichech.us
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From fakeaddress at nowhere.org  Fri Sep 22 10:52:19 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 22 Sep 2006 14:52:19 GMT
Subject: send with timeout socket
In-Reply-To: <Xns984679EF2DA0Fstefninalussinanorg@212.27.42.133>
References: <Xns984679EF2DA0Fstefninalussinanorg@212.27.42.133>
Message-ID: <DMSQg.3519$vJ2.3294@newssvr12.news.prodigy.com>

St?phane Ninin wrote:
> I have a few questions regarding sockets with timeouts.
> 
> Assuming you set a timeout t on a socket s and then call:
> 
> 
> 1) s.sendall
> Is the socket.timeout exception thrown when
> not the data was sent in the given time t 
> or if nothing was sent ?

Neither; not exactly anyway. It may call send() several
times, and it raises socket.timeout if any of the calls
blocks for longer than the socket's timeout.


> 2) Similar question for s.send:
> Is the socket.timeout exception thrown when 
> nothing was sent or ... ?

Raised when and only when nothing was sent.


-- 
--Bryan


From steve at holdenweb.com  Wed Sep  6 04:30:05 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 09:30:05 +0100
Subject: Import a textfile to MS SQL with python
In-Reply-To: <1157529072.409252.87110@i42g2000cwa.googlegroups.com>
References: <1157529072.409252.87110@i42g2000cwa.googlegroups.com>
Message-ID: <edm0ta$45v$1@sea.gmane.org>

joel.sjoo at gmail.com wrote:
> I'm a dba for SQL server and I Will import a textfile to SQL. For
> example I use a file with 3 columns. ID, Name and Surname and the
> columns are tab separated. I don't know much about programming.
> Anyway, I use this code below. It works, but it will not split the
> columns. I have tried to change the argumnts in str(alllines[]) Some of
> the columns can include many characters and some not. For exampel names
> can be Bo or Lars-Ture.
> 
> I be glad if some can help me with this.
> 
> Regar Joel
> 
> import pymssql
> import string,re
> 
> myconn =
> pymssql.connect(host='lisa',user='sa',password='AGpu83!#',database='junk')

Thanks for letting us know the administrator password for your database. 
You might want to consider changing it (unless you modified this line 
before posting).

> mycursor = myconn.cursor()
> 
> inpfile=open('c:\\temp\\test.txt','r')
> for alllines in inpfile.read().split('\n'):
> 	stmt="insert into python (id, namn, efternamn) values ('%s', '%s',
> '%s')" %(str(alllines[0]),str(alllines[2:10]),str(alllines[3:10]))
> 
> mycursor.execute(stmt)
> 	print stmt

This is much better expressed as something like the following (untested):

stmt = "insert into python (id, namn, efternamn) values (?, ?, ?)"
for line in inpfile:
     mycursor.execute(stmt, tuple(line.split()))

Note that the "(?, ?, ?)" list of parameter markers assumes that pymssql 
uses the "qmark" paramstyle, you'll have to check the documentation if 
you get SQL syntax errors or similar - I couldn't easily find a 
reference on the web.

The point of passing the tuple of data values as a second argument to 
the .execute() method is to have the DB module take care of any 
necessary quoting and representation issues. Otherwise values that (for 
example) include a singel quotes, such as "O'Reilly" can be problematical.

> inpfile.close()
> myconn.commit()
> myconn.close()
> 

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From gagsl-py at yahoo.com.ar  Tue Sep 26 00:27:24 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 01:27:24 -0300
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926012529.04a68660@yahoo.com.ar>

At Monday 25/9/2006 20:09, walterbyrd wrote:

I do.

>If so, I doubt there are many.

That's why they get well paid :)
(uhm, not really... :( )



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From javier_subervi at yahoo.com  Sat Sep 30 16:15:04 2006
From: javier_subervi at yahoo.com (Javier Subervi)
Date: Sat, 30 Sep 2006 13:15:04 -0700 (PDT)
Subject: Upgrading Problems
Message-ID: <20060930201505.23978.qmail@web90311.mail.mud.yahoo.com>

Hi;
I have python 2.3.5 and I'd like to upgrade to 2.5.0. I've tried installing from FreeBSD ports and the oldfashioned way from source code, with the "configure && make && make install" dance, and still when I call up my python interpreter it tells me I'm in 2.3.5! Why? I didn't do "altinstall"! What gives?
TIA,
Javier2
 		
---------------------------------
Do you Yahoo!?
 Get on board. You're invited to try the new Yahoo! Mail.
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From paul at boddie.org.uk  Thu Sep 21 17:20:28 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 21 Sep 2006 14:20:28 -0700
Subject: parsing java files
References: <vXCQg.233$HX5.50@nntpserver.swip.net>
Message-ID: <1158873628.679077.285530@m73g2000cwd.googlegroups.com>

st?phane bard wrote:
> hello
> i would like to parse java files an detect
> class name's, attributes name's type's and visibility (and or list of
> methods).
>
> is there any module who can parse easily a java file without using
> (jython)?

There are probably a number of standard parser solutions which can
expose such information. However, another solution is that provided by
the javaclass package:

import javaclass.classfile # http://www.python.org/pypi/javaclass

# Read the contents of the compiled class.

f = open("org/w3c/dom/Element.class", "rb")
s = f.read()
f.close()

# Process the class data.

c = javaclass.classfile.ClassFile(s)

# Obtain the internal name of the class.

name = unicode(c.interfaces[0].get_name()) # u'org/w3c/dom/Node'
for m in c.methods:

    # Obtain each method name and access details.

    method_name = unicode(m.get_name()) # eg. u'getTagName'
    is_public = m.access_flags & javaclass.classfile.PUBLIC

Obviously, this is more convoluted than it needs to be, but the
original purpose of the module employed is to assist in translating
Java class data to other forms - notably Python bytecode - although
such experiments haven't been continued by myself for quite some time.
The class decoding part illustrated above should be quite usable,
however.

Paul



From claudio.grondi at freenet.de  Thu Sep  7 10:04:37 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 16:04:37 +0200
Subject: 3 Simple Questions About Python/IDLE
In-Reply-To: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
Message-ID: <edp8tk$33j$1@newsreader2.netcologne.de>

Omar wrote:
> 1) why don't python / idle use numbered lines in their scripting, like
> basic?  how do you keep track of large batches of code without them?
> 
> 2) in IDLE, how do you save a program such that it can be run, say from
> windows the "run" function?
> 
> 3) are most of you doing your script editing in IDLE or something more
> fully featured?
> 
> 4) how are you importing previously written blocks of code into your
> code?  cut and paste?  what is the best way to organize snippets of
> code?
> 
> thanks, peeps
> 
1) Python is very different from what you expect being experienced in 
programming with Basic. My recommendation: don't hesitate to take the 
time to read the Python manual.
2) Double click on saved Python script (hope you are able to save a 
file? Haven't you detected that you can edit and run a file in IDLE?)
3) Plain text editor or IDLE are good. For more see Python website - 
there are plenty options to choose from.
4) using 'import' (see recommendation in 1))

Claudio Grondi


From bignose+hates-spam at benfinney.id.au  Wed Sep 27 20:09:40 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 28 Sep 2006 10:09:40 +1000
Subject: concat next line with previous
References: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>
	<451AA4D5.6040703@tobiah.org>
Message-ID: <874puslum3.fsf@benfinney.id.au>

tobiah <toby at tobiah.org> writes:

> assuming that the 'lines' have newlines at the end,

No need to assume; tell the string what you want.

    ' '.join(line1.rstrip('\n'), line2)

-- 
 \       "Nothing is so common as to imitate one's enemies, and to use |
  `\        their weapons."  -- Voltaire, _Dictionnaire Philosophique_ |
_o__)                                                                  |
Ben Finney



From paul at boddie.org.uk  Sat Sep 30 12:22:03 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 30 Sep 2006 09:22:03 -0700
Subject: _gtk
References: <1159632272.796759.109940@e3g2000cwe.googlegroups.com>
Message-ID: <1159633323.518849.240450@m73g2000cwd.googlegroups.com>

vedran_deko... at yahoo.com wrote:
> Hello,
> Where to I download module:  _gtk

I would suggest starting here:

http://www.pygtk.org/downloads.html

It looks like you need the PyGTK package.

Paul



From haraldarminmassa at gmail.com  Mon Sep 25 07:15:48 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 25 Sep 2006 04:15:48 -0700
Subject: Talking to marketing people about Python
In-Reply-To: <roy-D4C452.19080324092006@reader2.panix.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <1159182948.681560.154710@i3g2000cwc.googlegroups.com>

Roy Smith schrieb:
>
> Can anybody suggest some good material I can give to him which will help
> explain what Python is and why it's a good thing, in a way that a
> marketing/product management person will understand?

please also look for the "Python success stories"

There is also a aviation control system running with Python / using
Python bindings.

Google offers Python bindings and has employed the BDFL and at least
one ~bot. I think nobody would doubt that Google has the most knowledge
about online services - maybe there is something about Python?

You can also point out that Python is especially suited for secure
online applications, with more web frameworks than keywords it offers a
very high "security through diversity", as no single vulnerabilitie can
be exploited across a big enough ecosphere.

Harald



From hpsekhon at googlemail.com  Mon Sep 11 12:18:09 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Mon, 11 Sep 2006 17:18:09 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <9afea2ac0609110910lf762f6ft6672b6dc092e5deb@mail.gmail.com>
References: <45057B5E.7010306@googlemail.com> <ee3urn$ane$1@sea.gmane.org>	
	<W52087337.337.12601.3@mx-extra>
	<9afea2ac0609110910lf762f6ft6672b6dc092e5deb@mail.gmail.com>
Message-ID: <45058C41.90608@googlemail.com>

Tim Williams wrote:
> On 11/09/06, Hari Sekhon <hpsekhon at googlemail.com> wrote:
>>
>>  Steve Holden wrote:
>>  Hari Sekhon wrote:
>>
>>
>>  The easiest way to test whether the command will run is to try and run
>> it. If the program doesn't exist then you'll get an exception, which you
>> can catch. Otherwise you'll be stuck with non-portable mechanisms for
>> each platform anyway ...
>>
>> regards
>>  Steve
>>
>>
>>  Yeah, this occurred to me just after I sent the mail, but I don't 
>> really
>> want to run the program because it will go off and do some work and take
>> time to come back. If there is a better way then that would be great. I
>> can't think of anything other than what you have suggested with a 
>> message
>> saying that the program wasn't found in the path which would be the most
>> appropriate error since the path could also be wrong.
>
>
> If you run your wrapper and the program exists then you don't have to
> test for it,  so the overall process is quicker and cleaner than
> testing-for *then* running the program
>
> If you run your wrapper and the program doesn't exist, then you have
> performed your "if exists"  test without extra code and with very
> little processing, and the raised exception will lead you nicely into
> your "not exists" scenario.
>
> try:
>    run_somecommand
> except:
>    print "you don't have %s installed" % somecommand
>
>
> HTH :)
>
The down side to that is the program has to be run which consumes time 
and slows the script down a fair bit (as well as outputting garbage to 
the screen)

-h

-- 
Hari Sekhon



From steve at holdenweb.com  Wed Sep  6 03:58:41 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:58:41 +0100
Subject: Removing from a List in Place
In-Reply-To: <1157500309.456462.277430@h48g2000cwc.googlegroups.com>
References: <B51587638.196.5201.1@mx-extra>	<9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>	<9afea2ac0609051409q6a083503sc2003669d0885c3f@mail.gmail.com>	<G51595154.188.5082.1@mx-extra>	<mailman.48.1157497547.5279.python-list@python.org>
	<1157500309.456462.277430@h48g2000cwc.googlegroups.com>
Message-ID: <edlv2f$t24$3@sea.gmane.org>

bearophileHUGS at lycos.com wrote:
> Tim Williams:
> 
>>You could also use a list comprehension for your case
>>
>>>>>alist = [1 ,2 ,3]
>>>>>alist = [x for x in alist if x != 2]
>>>>>alist
>>
>>[1, 3]
> 
> 
> The list comprehension filtering is the simpler and often the best
> solution. For memory-conscious people this is another possible
> (un-pythonic) solution, usable in less dynamic languages too (not much
> tested), expecially if the good elements are few (Psyco may help too).
> I haven't tested its speed, but in Python it may be slower than the
> simpler comprehension filtering solution:
> 
> array = [1,2,3,1,5,1,6,0]
> good = lambda x: x > 2
> slow = 0
> for fast, item in enumerate(array):
>     print item,
>     if good(item):
>         if slow != fast:
>             array[slow] = array[fast]
>         slow += 1
> print "\n", array
> del array[slow:]
> print array
> 
> Output:
> 1 2 3 1 5 1 6 0
> [3, 5, 6, 1, 5, 1, 6, 0]
> [3, 5, 6]
> 
This would be a way-premature optimisation until you had proven the need 
for it in the context of a specific program.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From swell at netcourrier.com  Fri Sep  1 05:14:00 2006
From: swell at netcourrier.com (swell at netcourrier.com)
Date: 1 Sep 2006 02:14:00 -0700
Subject: Broadcast server
In-Reply-To: <44f77d3c$0$75041$14726298@news.sunsite.dk>
References: <1157015655.323891.154720@p79g2000cwp.googlegroups.com>
	<44f77d3c$0$75041$14726298@news.sunsite.dk>
Message-ID: <1157102040.703559.322090@p79g2000cwp.googlegroups.com>

Yes but before going deeper ( too deep ) i would like to play with a
toy python example. Basically what i want to study first is a socket or
socket+select server and 5 clients that get time updated from the
server.

Don't really know how to keep hot connections without blocking the
server ? If someone can show me a quick and dirty example of the
client/server i'll apprciate it a lot.

Thx
Manu



From MonkeeSage at gmail.com  Fri Sep 29 14:37:40 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 29 Sep 2006 11:37:40 -0700
Subject: retry in exception
References: <451d4294$1@news.vo.lu>
	<slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1159555060.721235.119530@b28g2000cwb.googlegroups.com>

Sybren Stuvel wrote:
> Antoine De Groote enlightened us with:
> > I hope I don't upset anybody by comparing Python to Ruby (again). Is
> > there something like Ruby's retry keyword in Python?
>
> Please don't assume that everybody knows Ruby through and through...

In ruby, the equivalent to try...except is begin...rescue. In the
rescue section you can ask it to retry the begin section. So, for
example:

b=0
begin
  puts 1/b
rescue
  b=1
  retry # <- this little guy
end

I don't think python has any equivalent (could be wrong). You can do
something like this however:

b=0
def do_stuff():
  print 1/b
try:
  do_stuff()
except:
  b=1
  do_stuff()

Regards,
Jordan



From tim.golden at viacom-outdoor.co.uk  Mon Sep 11 11:54:17 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Mon, 11 Sep 2006 16:54:17 +0100
Subject: best way of testing a program exists before using it?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B42C@vogbs009.gb.vo.local>

[Rob Wolfe]
| Hari Sekhon wrote:
| > I am writing a wrapper to a binary command to run it and then do
| > something with the xml output from it.
| >
| > What is the best way of making sure that the command is 
| installed on the
| > system before I try to execute it, like the python equivalent of the
| > unix command "which"?
| >
| > Otherwise I'd have to do something like:
| >
| > if os.system('which somecommand') != 0:
| >     print "you don't have %s installed" % somecommand
| >     sys.exit(1)
| >
| > I know that isn't portable which is why a python solution would be
| > better (although this will run on unix anyway, but it'd be 
| nice if it
| > ran on windows too).
| 
| IMHO this is pretty portable:
| 
| >>> def is_on_path(fname):
| ...     for p in os.environ['PATH'].split(os.pathsep):
| ...             if os.path.isfile(os.path.join(p, fname)):
| ...                     return True
| ...     return False
| 

Depends on how "fname" is specified: on Win32, the filename 
itself will have one of the PATHEXT extensions, even though you
conventionally don't specify it (and if you're after
portability you certainly won't). On *nix, tho', you almost
certainly won't have the extension.

As it happens I wrote a script similar to yours this morning
which takes account of the PATHEXT, but because of that, it's
obviously win-specific. Maybe it could be made a bit smarter
to account for the possible absence of the env var.

(This is a cut-down version)

<code>
import os, sys

class x_finished (Exception): pass

paths = ["."] + os.environ.get ("PATH", "").split (";")
exts = [e.lower () for e in os.environ.get ("PATHEXT", ".exe").split
(";")]

if __name__ == '__main__':
  if len (sys.argv) > 1:
    search_for = sys.argv[1]
  else:
    search_for = raw_input ("Search for:")
  
  base, ext = os.path.splitext (search_for)
  if ext:
    exts = [ext]
    
  try:
    for path in paths:
      for ext in exts:
        filepath = os.path.join (path, "%s%s" % (base, ext))
        if os.path.isfile (filepath):
          print filepath
          raise x_finished
  except x_finished:
    pass

</code>

TJG

________________________________________________________________________
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From rNOSPAMon at flownet.com  Mon Sep 11 16:01:58 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Mon, 11 Sep 2006 13:01:58 -0700
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
Message-ID: <rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>

In article <mailman.287.1158003082.5279.python-list at python.org>,
 Steve Holden <steve at holdenweb.com> wrote:

> The normal way is
> 
> s = cgi.parse()
> 
> since the CGI script sees the client network socket (after consumption 
> of HTTP headers) as its standard input.

Doesn't work.  (I even tried sys.stdin=r.rfile; s=cgi.parse())  Don't 
forget, this is not a CGI script, it's a handler for a BaseHTTPServer.


> > 2.  Despite the fact that I'm passing a 1 for the keep_blank_values 
> > argument to cgi.parse_qs, it doesn't actually keep blank values.  Is 
> > this a bug, or am I doing something wrong?
> > 
> Sounds like a bug, but then since your parsing looks buggy I'm surprised 
> you get anything at all. Try using a keyword argument 
> keep_blank_values=1 just in case the order has changed or something 
> daft. But fix your parsing first.
> 
> The other thing to note is that since you are putting a dictionary's 
> string representation out straight into your HTML if there are odd 
> characters in it this may give you strange output in the browser, so you 
> should view the page source to ensure that's not the case. Which it 
> probably isn't ...

I know that's not a problem because it does work when I use parse_qs.  
(I know about escaping HTML and all that, but this is just a little test 
program.)

rg


From almondb at gmail.com  Sat Sep  2 20:00:14 2006
From: almondb at gmail.com (Brian)
Date: 2 Sep 2006 17:00:14 -0700
Subject: XBox 360 free SDK (XNA) and IronPython
In-Reply-To: <1157240570.654955.154560@b28g2000cwb.googlegroups.com>
References: <1157237444.130785.194100@p79g2000cwp.googlegroups.com>
	<1157240570.654955.154560@b28g2000cwb.googlegroups.com>
Message-ID: <1157241614.291133.241510@b28g2000cwb.googlegroups.com>

> IronPython won't work on the XBox 360.

Yup.  Perhaps sometime in the future.  A few weeks ago Albert Ho, MS
XNA program manager wrote the following on the MSDN XNA Game Studio
Express forum:

"Because the Xbox 360 uses a special port of the .NET CF, the LCG
method-generation functionality isn't available -- unfortunately
IronPython won't work on the Xbox 360 today.  We are planning on
investigating this for future releases."



From Kevin.Smith at sas.com  Thu Sep  7 12:35:25 2006
From: Kevin.Smith at sas.com (Kevin D. Smith)
Date: Thu, 7 Sep 2006 12:35:25 -0400
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1hlavwx.237nu65lozv5N%rhymes@myself.com>
Message-ID: <edphkq$ddp$1@foggy.unx.sas.com>

On 2006-09-07 09:28:42 -0400, rhymes at myself.com (Lawrence Oluyede) said:

> Kevin D. Smith <Kevin.Smith at sas.com> wrote:
>> Then there is Mike Fletcher's web page 
>> (http://www.vrplumber.com/programming/mstoolkit/) that describes in 
>> detail how to build extensions, but most of the links to external 
>> software are no longer valid.  I think it's safe to say that I am 
>> completely lost, as there appears to be no authoritative, up-to-date 
>> description on how to make this work.
> 
> I managed to set up a compilation toolchain in Windows following that
> tutorial so what's your problem?
> 
> I installed MS .NET 1.1 and its SDK, the Platform SDK for Windows 2003
> sever and the mstoolkit (you have to borrow it from somewhere because
> it's not available anymore)
> Then I hacked distutils and all worked well.
> 
> The only issue is to find the MS Toolkit 2003...


So in other words, what you're saying is that the only issue I have 
left is the exact issue that I described in my initial post that you 
claimed isn't a problem...  Great!  I guess I'l get right down to work 
compiling that extension now.

-- 
Kevin D. Smith



From sylvain.thenault at logilab.fr  Tue Sep 26 05:27:23 2006
From: sylvain.thenault at logilab.fr (Sylvain =?iso-8859-1?Q?Th=E9nault?=)
Date: Tue, 26 Sep 2006 11:27:23 +0200
Subject: [ANN] pylint 0.12.1
Message-ID: <20060926092723.GL24712@crater.logilab.fr>


Hi there !

I'm very pleased to announce the 0.12.1 release of PyLint.
This release includes some bug fixes and have tests passing from python 2.3
to python 2.5 :). You may be surprised by the version number since we have
been missing public annoucements recently, and the 0.12.0 version has not 
really been announced. To quote Alexandre, we got a bit sloppy in the public 
part of our release process, and the mails did not fly... Hopefuly we'll be 
better on this in a near future. Anyway there has been a lot of usability 
changes and a lot of bug fixes making pylint more stable (at least since
the type inference has been introduced...) and nicer to configure and use, so
please upgrade to this version, along with the latest logilab-common and
logilab-astng version (this relelase of pylint actually depends on 
astng >= 0.16.1). I hope you'll enjoy this release and would like to thanks
everybody who contribute to pylint/astng by sending feedback or even better
patch on the mailing list :) Enjoy !

What's new ?
------------
:Changes in 0.12.1
* fixed python >= 2.4 format false positive with multiple lines statement
* fixed some 2.5 issues
* fixed generator expression scope bug (depends on astng 0.16.1)
* stop requiring __revision__
	
:Changes in 0.12:
* usability changes:
  - parseable, html and color options are now handled by a single 
    output-format option
  - enable-<checkerid> and disable-all options are now handled by 
    two (exclusive) enable-checker and disable-checker options 
    taking a comma separated list of checker names as value
  - renamed debug-mode option to errors-only
* started a reference user manual
* new W0212 message for access to protected member from client code
  (close #14081)
* new W0105 and W0106 messages extracted from W0104 (statement seems
  to have no effect) respectivly when the statement is actually string
  (that's sometimes used instead of comments for documentation) or an
  empty  statement generated by a useless semicolumn
* reclassified W0302 to C0302
* fix so that global messages are not anymore connected to the last
  analyzed module (close #10106)
* fix some bugs related to local disabling of messages
* fix cr/lf pb when generating the rc file on windows platforms

What is pylint ?
----------------

Pylint is a python tool that checks if a module satisfy a coding
standard. Pylint can be seen as another pychecker since nearly all
tests you can do with pychecker can also be done with Pylint. But
Pylint offers some more features, like checking line-code's length,
checking if variable names are well-formed according to your coding
standard, or checking if declared interfaces are truly implemented,
and much more (see http://www.logilab.org/projects/pylint/ for the
complete check list). The big advantage with Pylint is that it is
highly configurable, customizable, and you can easily write a small
plugin to add a personal feature.

The usage it quite simple :

$ pylint mypackage.mymodule
        

This command will output all the errors and warnings related to the
tested code (here : mypackage.mymodule), will dump a little summary at
the end, and will give a mark to the tested code.

Pylint is free software distributed under the GNU Public Licence.


Home page
---------
http://www.logilab.org/projects/pylint

Download
--------
ftp://ftp.logilab.org/pub/pylint

Mailing list
------------
mailto://python-projects at logilab.org
-- 
Sylvain Th?nault                               LOGILAB, Paris (France)
Formations Python, Zope, Plone, Debian:  http://www.logilab.fr/formations
D?veloppement logiciel sur mesure:       http://www.logilab.fr/services
Python et calcul scientifique:           http://www.logilab.fr/science



From jmike at alum.mit.edu  Fri Sep 22 12:10:43 2006
From: jmike at alum.mit.edu (jmike at alum.mit.edu)
Date: 22 Sep 2006 09:10:43 -0700
Subject: XML parser that sorts elements?
In-Reply-To: <_OTQg.4326$nX4.2493@tornado.texas.rr.com>
References: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>
	<_OTQg.4326$nX4.2493@tornado.texas.rr.com>
Message-ID: <1158941443.551824.201880@m7g2000cwm.googlegroups.com>


Paul McGuire wrote:

...
> Here is a snippet from an interactive Python session, working with the
> "batteries included" xml.dom.minidom.  The solution is not necessarily in
> the parser, it may be instead in what you do with the parsed document
> object.
>
> This is not a solution to your actual problem, but I hope it gives you
> enough to work with to find your own solution.
>
> HTH,
> -- Paul

Whoa.  Outstanding.  Excellent.  Thank you!
  --JMike



From santosh.iitm2002 at gmail.com  Tue Sep  5 23:26:12 2006
From: santosh.iitm2002 at gmail.com (CloudStrife)
Date: 5 Sep 2006 20:26:12 -0700
Subject: EVIDENCE: 911 was CONTROLLED DEMOLITION to make muslims 2nd class
In-Reply-To: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>
References: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>
Message-ID: <1157513172.511761.286270@m79g2000cwm.googlegroups.com>

Thanks thermate but i guess this is a wrong place to post this. this is
a emacs help community and this by no means wat so ever is related to
emcas for that matter gnu.
The post is good but would be more appreciated if it was in the correct
place.
Cloud
thermate at india.com wrote:
> EVIDENCE: 911 was CONTROLLED DEMOLITION to make muslims 2nd class
>
> We have now video evidence that 911 was an INSIDE JOB like the USS
> Liberty by ELEMENTS OF US GOVERNMENT.
>
> Dont trust me!!!! Go and watch the videos on youtube.com and
> video.google.com ..........
> THEY ARE ... MY GOD ... GREAT VIDEOS ...
>
> search terms on youtube and video.google :
>
> thermate               <------ the material used by criminals
> alex jones              <------ lead media man on this case
> terror storm          <------- great video
> loose change         <------ excellent video
> steven jones           <--------- he is the professor who found
> thermate in the samples of molten metal
>
> There is a very hot competition going on between the agents of ACTUAL
> TERRORISTS and the PUBLIC.
>
> The TERRORISTS are trying to cover up by all kinds of tactics like
> puting noise on top of the facts.
> finding excuses to censor the sites but they will NEVER succeed. God is
> on the side of honest and
> innocent victims.
>
> You have videos of thermate in operation. YOU WILL ENJOY THE DISCOVERY.
>
> THERE is a video of Bush getting distracted when confronted with
> "INSIDE JOB". You will LOVE IT.
>
> There are excellent other links:
>
> http://people.howstuffworks.com/conspiracy-theory.htm/printable
> <--- has excellent links but written in a mild style
>
> The NIST is trying to DO A COVERUP FOR THE ACTUAL TERRORISTS but the
> brains of the people are working to counteract the false propaganda of
> the TERRORISTS.
>
> Here is the link:
> http://www.st911.org/ <---- NIST released its FAKE FAQ only a few days
> ago but REBUTTED IMMEDIATELY
>
> Larry Silverstein the owner of WTC 1,2,7 who made 500 millions on the
> insurance and his cryptic statements:
> http://www.prisonplanet.com/articles/january2006/050106silversteinanswers.htm
>
> THE SMOKING GUN PHOTOS ON THIS PAGE:
>
> http://valis.gnn.tv/B15947
> http://www.prisonplanet.com/articles/june2006/200606scientificanalysis.htm
>
> Observe the clean cut at 45 degrees of the columns using thermate
> cutter charges
> to slide the building floors down. The normal cuts are always
> perpendicular shortest cuts.
>
> Other dedicated sites:
>
> www.prisonplanet.com
> http://infowars.com/
>
> http://www.st911.org/   <----------   The scholarly journal of 911
> studies.
>
> They seem to have very nicely presented rebuttals to NIST FAQ only a
> few days ago.
> A very smart and a very aggressive group of scientists and engineers,
> just like Mr Kaspersky who found the officially denied rootkit in Sony.
>
> COPY AND PASTE FROM THE SITE:
> ----------------------------------------------
> Responding to NIST's Official "Questions and Answers"
>
> NIST and the World Trade Center: Official "Questions and Answers"
>
> NIST's World Trade Center FAQ: A Reply
> Jim Hoffman
>
> Why NIST hasn't Answered its own Questions
> Jim Fetzer
>
> Why the NIST "Fact Sheet" Just Won't Do
> Sean Glazier
>
> Responses to NIST's FAQs
> Kevin Ryan
>
> NIST and "The Foot Of God"
> Robert Rice
>
> Experiments to test NIST "orange glow" hypothesis...
> Steven E. Jones
>
>
> CONTACT YOUR REPRESENTATIVES IN CONGRESS AND THE SENATE.
> DEMAND A NEW AND INDEPENDENT INVESTIGATION OF THIS
> CRIME OF THE CENTURY!
>
> More 9/11 documentation:
> http://www.st911.org/
> http://www.septembereleventh.org/kc/multimedia/
> http://911busters.com/911-Commission.html
> http://www.septembereleventh.org/audio.php
> http://911busters.com/SanFran04/index.html
> http://www.911truth.org/index.php?topic=gallery
> http://www.reopen911.org/
> http://www.911truth.org/
> http://www.911truthseekers.org/
> http://www.911truthseekers.org/modules/news/
> http://www.gnn.tv/
> http://www.fema.gov/pdf/library/fema403_apc.pdf
> http://www.911studies.com/index.html
> http://www.septembereleventh.org/index.php
> http://infowars.com/
> http://www.whatreallyhappened.com/
> http://www.mujca.com/index.htm
> http://proliberty.com/observer/20051213.htm
> http://911research.wtc7.net/index.html
> http://www.physics.byu.edu/research/energy/htm7.html
> http://911review.com/
> http://guardian.250free.com/wtc/dust-cloud.htm
> http://www.defenselink.mil/transcripts/2001/t11182001_t1012pm.html



From shrikant at coolsoft.cc  Fri Sep 15 13:48:37 2006
From: shrikant at coolsoft.cc (shrikant at coolsoft.cc)
Date: 15 Sep 2006 10:48:37 -0700
Subject: REQ: Java/J2EE Developer 10 Months
Message-ID: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>

Hi Partners,

Please check the following project details. If you are comfortable with
the requirement. Please send me your resume with the following details
asap.

Name of the Consultant
      - Phone Number
      - Email
      - Rate / Salary
      - Availability
      - Location

Location: Dallas, TX.

Duration: 10 Months

Rate: DOE


Skill:
--------

*Java, 2 year UNIX - HP / Solaris, 2 yrs OOA+D, Corba, Perl, XML, UML.
*Java dev experience, Swing, JPS, 2 years of OOA+D.


------------------------------------------------------------------------------------------------
*We need 5 server side Java developers, and 5 front end Java devs
------------------------------------------------------------------------------------------------

----------
Regards

Shrikant,
COOLSOFT LLC,
E-Mail: shrikant at coolsofttech.com
www.coolsoft.com
502-212-9464



From ilias at lazaridis.com  Sun Sep  3 12:13:52 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 3 Sep 2006 09:13:52 -0700
Subject: CONSTRUCT - Module Attributes and Execution Environment
In-Reply-To: <1156678260.710723.76890@i3g2000cwc.googlegroups.com>
References: <1156253227.092971.36510@74g2000cwt.googlegroups.com>
	<1156678260.710723.76890@i3g2000cwc.googlegroups.com>
Message-ID: <1157300032.471638.137980@m73g2000cwd.googlegroups.com>


lazaridis_com wrote:
> lazaridis_com wrote:
> > I would like to change the construct:
> >
> > if __name__ == '__main__':
> ...
>
> Is there a standard way / naming to wrap "__name__" and other similar
> attributes to an encapsulating class?
...

see follow-up thread:
http://groups.google.com/group/comp.lang.python/browse_thread/thread/37905d66ae0e37c4



From steve at holdenweb.com  Fri Sep 29 01:57:05 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 29 Sep 2006 06:57:05 +0100
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <1159506495.429866.303030@c28g2000cwb.googlegroups.com>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>	<efhril$nrm$1@lust.ihug.co.nz>	<mailman.916.1159498252.10491.python-list@python.org>	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
Message-ID: <efichu$5l2$1@sea.gmane.org>

MonkeeSage wrote:
> So far as unobfuscated versions go, how about the simple:
> 
> def to_bin(x):
>   out = []
>   while x > 0:
>     out.insert(0, str(x % 2))
>     x = x / 2
>   return ''.join(out)
> 
> Regards,
> Jordan
> 
  >>> to_bin(0)
''

6/10: try harder :)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From duncan.booth at invalid.invalid  Fri Sep  1 05:12:42 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 1 Sep 2006 09:12:42 GMT
Subject: Classes referencing each other
References: <mailman.10236.1157100375.27775.python-list@python.org>
Message-ID: <Xns983167DE33BB3duncanbooth@127.0.0.1>

"Manuel Bleichner" <manuel at prolink.de> wrote:

> If anyone of you knows a neat way to solve this, I'd be
> very grateful.

You could use a function:

class A(object):
   @staticmethod
   def connected_to(): return [B, C]
   <other attributes...>

class B(object)
   @staticmethod
   def connected_to(): return [C]
   <other attributes...>

class C(object)
   @staticmethod
   def connected_to(): return [A]
   <other attributes...>

for cls in globals().values():
    if (type(cls) is type and 
        hasattr(cls, 'connected_to') and
        callable(cls.connected_to)):
        cls.connected_to = cls.connected_to()

or just store the names of the classes and do a similar fixup once they are 
all defined:

class A(object):
   connected_to = ['B', 'C']
   <other attributes...>

for cls in globals().values():
    if (type(cls) is type and 
        hasattr(cls, 'connected_to')):
        cls.connected_to = [globals()[c] for c in cls.connected_to ]


From jmdeschamps at gmail.com  Thu Sep 28 00:51:37 2006
From: jmdeschamps at gmail.com (jmdeschamps at gmail.com)
Date: 27 Sep 2006 21:51:37 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159395485.824735.319090@b28g2000cwb.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<451A314F.3060703@isy.liu.se>
	<mailman.815.1159378067.10491.python-list@python.org>
	<1159395485.824735.319090@b28g2000cwb.googlegroups.com>
Message-ID: <1159419097.556600.160750@k70g2000cwa.googlegroups.com>

...
>
> If anybody has some really good sites with examples of Tkinter programs
> and stuff, please share :)
...

You should really pay attention to people's reply to your questions if
you want help ;-)

In this case meaning, that you should show what type of problem you are
getting.

Since the examples out of An Introduction to Tkinter work, what else
could be useful to you is hard to guess.

jean-marc



From Benjamin.Barker at gmail.com  Sat Sep 30 10:38:51 2006
From: Benjamin.Barker at gmail.com (Ben)
Date: 30 Sep 2006 07:38:51 -0700
Subject: Storing records from a parsed file
In-Reply-To: <1159626075.411507.133790@k70g2000cwa.googlegroups.com>
References: <1159619474.342225.319660@h48g2000cwc.googlegroups.com>
	<mailman.999.1159624370.10491.python-list@python.org>
	<1159626075.411507.133790@k70g2000cwa.googlegroups.com>
Message-ID: <1159627131.177295.257510@c28g2000cwb.googlegroups.com>

Ah - I think I've sorted it out.

I can now have data1.function()

or

data2.function()


etc


However, I can still call function() directly:

function()

 which seems very odd Indeed. The only instances of function are within
classes data1 and data2, and these definitions are different, so I
don't see why I can get away with calling it without reference to a
base class - for a start how does it know whivh one to call... will
investigate :-p



From flupke at nonexistingdomain.com  Thu Sep 28 03:27:05 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 28 Sep 2006 07:27:05 GMT
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <mailman.868.1159427578.10491.python-list@python.org>
References: <mailman.868.1159427578.10491.python-list@python.org>
Message-ID: <dPKSg.100492$BD1.1438809@phobos.telenet-ops.be>

fdu.xiaojf at gmail.com schreef:
> Hi,
> 
> String formatting can be used to converting an integer to its octal or
> hexadecimal form:
>>>> a = 199
>>>> "%o" % a
> '307'
>>>> "%x" % a
> 'c7'
> 
> But, can string formatting be used to convert an integer to its binary
> form ?
> 
> 
> Thanks in advance.
> 
> xiaojf

I don't actually know how to do it with string formatting but you can
create a simple function to do it.
Here's an example:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/219300

Regards,
Benedict


From jmcmonagle at velseis.com.au  Wed Sep 13 19:31:03 2006
From: jmcmonagle at velseis.com.au (John McMonagle)
Date: Thu, 14 Sep 2006 09:31:03 +1000
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
Message-ID: <1158190263.5242.14.camel@kuepper.vels-int.com.au>


> 
> Assuming dict_sweep worked perfectly it would take input like this:
> 
> A_in = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
> 
> B_in = {1: {1: {1: None, 2: {1: None}}, 2: 2, 3: None}
> 
> and output this:
> 
> A_out = {1: {2: 2, 3: {2: 2}}, 2: 2}
> 
> B_out = {2:2}
> 
> This dict_sweep above obviously doesn't work and I'm rather afraid of
> hitting python's recursion limit. Does anyone see a way to modify
> dict_sweep in it's current state to perform dictionary sweeps like
> this? What about a non-recursive implementation of dict_sweep?
> 

How about this:

A_in = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}

def dict_sweep(dictin):
    
    for key in dictin.keys():   
        if dictin.get(key) == None:
            del dictin[key]
        elif type(dictin[key]) is dict:
            dictin[key] = dict_sweep(dictin[key])            
    return dictin

A_out = dict_sweep(A_in)
print A_out
 



Running the above returns:

{1: {2: 2, 3: {2: 2}}, 2: 2}

Regards,

John




-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



From bmearns at coe.neu.edu  Thu Sep 14 09:12:06 2006
From: bmearns at coe.neu.edu (bmearns)
Date: 14 Sep 2006 06:12:06 -0700
Subject: Outbound port on sockets
In-Reply-To: <1158239351.008092.170070@i42g2000cwa.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>
Message-ID: <1158239526.673977.312840@p79g2000cwp.googlegroups.com>

Quick follow up, I'm able to connect to other external FTP sites behind
my firewall and router, no problem.

-Brian


bmearns wrote:
> Thanks for all the responses. I understood what the PORT command was
> for, but I've been seeing alot of doc online that only mentions going
> outbound on port 20 for data connections, so I thought maybe that was
> my problem.
>
> Sorry if this is the wrong spot to follow up on this not-so-much-python
> matter. Does anyone know of an appropriate news group?
> I'm trying to get through a router and Norton Internet security, using
> my homebrewed python FTP server and Internet Explorer as my client
> (I've also tried microsoft's FTP command line client). I'm able to go
> back and forth on the command socket, no problem, but after the client
> issues a PORT, I try to connect to it, and time out. I'm becoming
> increasingly convinced that it's a firewall/router issue because if I
> connect to my server as localhost, instead of my outside IP address, I
> can connect fine.
>
> I've tried disabling Internet security, but that doesn't help. I
> suspect the problem is port forwarding from the router, but I don't
> know what the port numbers will be, so how can I set up forwarding?
>
> Any help is greatly appreciated. I've been banging my head against the
> wall for hours.
> 
> -Brian



From MonkeeSage at gmail.com  Sat Sep 30 03:12:56 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 00:12:56 -0700
Subject: File I/O
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
	<1159527353.447436.107610@i42g2000cwa.googlegroups.com>
	<4o4eipFcp21dU1@uni-berlin.de>
	<1159534659.445774.230620@i3g2000cwc.googlegroups.com>
	<4o4o4oFcv8p5U1@uni-berlin.de>
Message-ID: <1159600373.100156.102690@b28g2000cwb.googlegroups.com>

Diez B. Roggisch wrote:
> Good to know that you can get drunk under any circumstances.

+(++)1 heh!

> I have seen a bazillion bad xml/html parsing-hacks using regexes and the
> like, which stopped working after somehow the xml came all in one line, or
> some other implicit assumption about its layout failed to be met.

Seriously, I fully agree with you. To manipulate X/HT/ML data reliably
you need to use a parser. And usually the parser API is much cleaner
and easier to work with than trying to cobble together regexps anyhow!

Regards,
Jordan



From paul at boddie.org.uk  Tue Sep 19 18:37:48 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 19 Sep 2006 15:37:48 -0700
Subject: high level, fast XML package for Python?
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<450CF5CF.3090109@v.loewis.de>
Message-ID: <1158705468.592531.252660@i3g2000cwc.googlegroups.com>

Martin v. L?wis wrote:
>
> It seems that everybody is proposing libraries that use in-memory
> representations. There is a standard xml package for Python, it's
> called "xml" (and comes with the standard library). It contains a
> SAX interface, xml.sax, which can parse files incrementally.

What about xml.dom.pulldom? It quite possibly resembles ElementTree's
iterparse, or at least promotes event-style handling of XML information
using some kind of mainloop...

import xml.dom.pulldom

for etype, node in xml.dom.pulldom.parseString(s):
    if etype == xml.dom.pulldom.START_ELEMENT:
        print node.nodeName, node.attributes

...instead of callbacks (as happens with SAX):

import xml.sax

class CH(xml.sax.ContentHandler):
    def startElement(self, name, attrs):
        print name, attrs

xml.sax.parseString(s, CH())

Paul



From fredrik at pythonware.com  Sat Sep  2 02:47:59 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 02 Sep 2006 08:47:59 +0200
Subject: Timeline for Python?
In-Reply-To: <b43bf2080609011943n79958cfcl937833330b71a363@mail.gmail.com>
References: <mailman.10185.1157035875.27775.python-list@python.org>	<1157097423.946429.261370@p79g2000cwp.googlegroups.com>
	<b43bf2080609011943n79958cfcl937833330b71a363@mail.gmail.com>
Message-ID: <edb9eu$eta$1@sea.gmane.org>

Sebastian Bassi wrote:

> Maybe I forgot to tell, but its going to take me at least 6 month to
> finish the book

I don't think anyone will know exactly how 3.0 will look within 6 
months.  Not that your publisher may care about that; there are plenty 
of books out there that describe how the author thought something would 
look some time in the future.  For some publishers, being bleeding edge 
is more fun than being useful.  And you can always print a second edition.

But if the goal is to be useful, I'd target 2.5, and mention differences 
and workarounds for 2.3 and 2.4 where suitable.

</F>



From walterbyrd at iname.com  Mon Sep 25 21:48:46 2006
From: walterbyrd at iname.com (walterbyrd)
Date: 25 Sep 2006 18:48:46 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <mailman.610.1159227601.10491.python-list@python.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
Message-ID: <1159235326.385036.233440@i3g2000cwc.googlegroups.com>


>
> Well I do. So do the other dozen or so developers at my company. We're looking
> to hire a few more, in fact.
>

I'm surprised. It seems I never see listings for python developers.

I didn't mean any disrespect. I think python is a great language. It
just doesn't seem like there is much demand for professional python
developers.



From deets at nospam.web.de  Tue Sep  5 07:06:14 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 05 Sep 2006 13:06:14 +0200
Subject: Check XML Without any DTD or schema.
References: <1157451079.113509.290530@e3g2000cwe.googlegroups.com>
Message-ID: <4m5416F4g8e1U1@uni-berlin.de>

gajewski.konrad at gmail.com wrote:
> I'm newbee. I try to check syntax any XML file. I don't have any dtd or
> shema file to this xml.
> Is this possible that I check syntax in any xml file in python.

There are two forms of checking xml-documents:

 - well-formedness, which means that the document adheres to the xml syntax,
that open tags are properly closed and tags in general form a tree
structure. Maybe some other things too, but that is the gist of it.

 - validity according to a schema/dtd, which is only possible to check for
well-formed documents 

The first you check by simply opening a file using a xml parser. The second
is only possible in presence of a schema-document and a validating parser -
which not all are.

Diez



From python.sam at googlemail.com  Mon Sep 25 13:27:14 2006
From: python.sam at googlemail.com (sam)
Date: 25 Sep 2006 10:27:14 -0700
Subject: python interpreter on solaris 10
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
Message-ID: <1159205234.213553.164990@e3g2000cwe.googlegroups.com>

to update:

i think i've tracked down the equivalent files on my pc. one opens the
interpreter in a white-backed text editor, the other at the
black-backed command prompt. i have equivalent files of the same size
on the workstation, which must be the same. does anyone know why i'm
getting 'there is no installed viewer capable of displaying the
document'?

i have no idea what i need, or where i can get it. any ideas?

sam



From dawodu4fun at yahoo.com  Sat Sep 16 01:56:14 2006
From: dawodu4fun at yahoo.com (spiffy)
Date: Sat, 16 Sep 2006 05:56:14 GMT
Subject: float questions
Message-ID: <094ng2916miuds69d9l0rul7r893esobu9@4ax.com>

after some calculations i have this number as a result...
-7.1054273576010019e-015

what does the 'e' mean? is this an error?

i want to be able to round this number to 3 places, but round() does
not work....
please excuse my ignorance
any help would be appreciated


From mail at microcorp.co.za  Fri Sep  1 03:12:34 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 1 Sep 2006 09:12:34 +0200
Subject: Tkinter listbox question
References: <1157028103.075184.149250@i3g2000cwc.googlegroups.com>
Message-ID: <01dd01c6cd96$1a17e580$03000080@hendrik>


 <vedran_dekovic at yahoo.com> Wrote:


| Hi,
| I need help about Tkinter listbox widget.I want,when somebody click on
| any item(file)  in Listbox,then in new Label widget text must be
| selected item from server.
| 
| my program (wrong example):
| 
| import ftputil
| import Tkinter
| root=Tkinter.Tk()
| ftp=ftputil.FTPHost('some imaginary server')
| 
| def LabelWidget(event):
|     a=Tkinter.Label(root,text=)  # Text must be only name and file
| format,example: sun.gif
|     a.grid()
| 
| 
| 
| b=Tkinter.Listbox(root)
| b.insert(Tkinter.END,ftp._dir(''))
| b.place()
| c=Tkinter.Button(root,text='PRINT THIS FILE IN NEW LABEL WIDGET')
| c.bind('<Button-1>',LabelWidget)
| c.grid()
| root.mainloop()
| 
| 
| THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


idx = b.curselection()        # - tells you which one was clicked
StringValue = b.get(idx)     # - returns the text

HTH - Hendrik



From richardjones at optushome.com.au  Fri Sep 29 03:54:02 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Fri, 29 Sep 2006 17:54:02 +1000
Subject: vector and particle effects
References: <1159467154.884505.131680@b28g2000cwb.googlegroups.com>
	<1159509440.170889.18480@e3g2000cwe.googlegroups.com>
Message-ID: <451cd11a$0$22358$afc38c87@news.optusnet.com.au>

Jay wrote:
> Sorry for the double post.  Google groups was being stubborn.
> Jay wrote:
>> I'd like to experiment a little bit with vector graphics in python.
>> When I say 'vector graphics' I don't mean regular old svg-style.  I
>> mean vector game style as in simulation of vector beam drawn graphics.
>> If you still don't know what I'm talking about, see Grid Wars 2
>> (http://gridwars.marune.de/) or Battlezone
>> (http://en.wikipedia.org/wiki/Battlezone).
>>
>> Anyway, I need help choosing a module or modules to support this.
>> Would pygame support this or should I try pyopengl?  Or is there a
>> better module for this?
>> 
>> Any tutorials for the basics would be GREATLY appreciated.

I'd suggest PyOpenGL because it'll be a *lot* faster. Something like
gridwars won't be possible in pygame.


    Richard



From MonkeeSage at gmail.com  Sat Sep 30 05:05:34 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 02:05:34 -0700
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<slrnehkc4a.smm.nick@irishsea.home.craig-wood.com>
	<Xns984B665F9485Cduncanbooth@127.0.0.1>
	<slrnehl355.2to.nick@irishsea.home.craig-wood.com>
Message-ID: <1159607134.015493.230480@h48g2000cwc.googlegroups.com>

Nick Craig-Wood wrote:
> These are snatched straight from perl.  In perl they are spelt
> slightly differently

Yup, they are; perl had _some_ good ideas; no doubt. ;)

> In perl (and maybe in ruby I don't know) the { } can be replaced with
> any two identical chars, or the matching pair if bracketty, so q/blah/
> or q(blah).

Yes; same thing in ruby.

Regards,
Jordan



From ldo at geek-central.gen.new_zealand  Wed Sep 27 04:55:50 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 20:55:50 +1200
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <efde8s$o1c$2@lust.ihug.co.nz>

In message <slrnehk7ju.rcu.apardon at rcpc42.vub.ac.be>, Antoon Pardon wrote:

> I need this Top value in
> a context where it can be used as a start or stop value
> in a slice.

But the only valid values allowed for indices are 0 up to the length of the
array inclusive. Larger integers are not allowed, so why should Top be
allowed?


From bernhard.voigt at gmail.com  Thu Sep  7 14:10:42 2006
From: bernhard.voigt at gmail.com (bernhard.voigt at gmail.com)
Date: 7 Sep 2006 11:10:42 -0700
Subject: Scientific computing and data visualization.
In-Reply-To: <mailman.100.1157579667.5279.python-list@python.org>
References: <mailman.85.1157564525.5279.python-list@python.org>
	<1157574433.664189.217960@m73g2000cwd.googlegroups.com>
	<mailman.100.1157579667.5279.python-list@python.org>
Message-ID: <1157652641.877725.223880@h48g2000cwc.googlegroups.com>

A commonly used data analysis framework is root (http://root.cern.ch).
It offers a object oriented C++ framework with all kind of things one
needs for plotting and data visualization. It comes along with PyRoot,
an interface making the root objects available to Python.
Take a look at the root manual for examples, it also contains a section
describing the use of PyRoot.

Cheers! Bernhard



From altemurbugra at gmail.com  Wed Sep 27 05:54:21 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 27 Sep 2006 02:54:21 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <mailman.789.1159349254.10491.python-list@python.org>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.640.1159254809.10491.python-list@python.org>
	<efcuf3$qht$2@lust.ihug.co.nz> <efd6n2$fbs$1@sea.gmane.org>
	<mailman.777.1159341826.10491.python-list@python.org>
	<efdego$o1c$3@lust.ihug.co.nz>
	<mailman.789.1159349254.10491.python-list@python.org>
Message-ID: <1159350861.143291.10060@k70g2000cwa.googlegroups.com>

ok i close this discussion
i understand everybody no problem



From gregpinero at gmail.com  Tue Sep  5 16:51:05 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Tue, 5 Sep 2006 16:51:05 -0400
Subject: Removing from a List in Place
Message-ID: <312cfe2b0609051351h5a259e3ap7fb5bde38f45a3f6@mail.gmail.com>

I'm going to assume that it's supposed to work like this, but could
someone tell me the reasoning behind it?  I.E. why is 3 skipped?

>>> alist=[1,2,3]
>>> for item in alist:
... 	print item
... 	if item==2:
... 		alist.remove(item)
... 		
1
2
>>>

Bonus Question:
Can we make this behave more intuitiviely in Python 3000?

-Greg


-- 
Gregory Pi?ero
Chief Innovation Officer
Blended Technologies
(www.blendedtechnologies.com)


From george.sakkis at gmail.com  Thu Sep 14 23:46:30 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 14 Sep 2006 20:46:30 -0700
Subject: Algorithm Question
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
	<ee44nl$8r$1$830fa79d@news.demon.co.uk>
	<1158015700.817709.253180@h48g2000cwc.googlegroups.com>
	<eeconn$s2n$1$8300dec7@news.demon.co.uk>
	<mailman.114.1158288895.10491.python-list@python.org>
Message-ID: <1158291990.602485.67970@k70g2000cwa.googlegroups.com>

Gabriel Genellina wrote:

> This is known as a "set cover" algorithm. You have a set of subsets,
> and want to determine the smallest set of those subsets, whose union
> is the universal set - (uh, what a mess!)

I thought of that too, but he seems to be adding a second desired
property: the intersections of the subsets should be as small as
possible, or in other words the subsets should be as distinct as
possible.

George



From martin at v.loewis.de  Thu Sep 14 17:44:06 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 14 Sep 2006 23:44:06 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <1158224279.869752.110830@i42g2000cwa.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1158192360.269240.61800@h48g2000cwc.googlegroups.com>
	<4508D322.3080202@v.loewis.de>
	<1158224279.869752.110830@i42g2000cwa.googlegroups.com>
Message-ID: <4509CD26.6020102@v.loewis.de>

Fuzzyman schrieb:
>> You may or may not know that it is futile arguing about compiler
>> switching for released versions of Python, i.e. 2.3, 2.4, and 2.5.
>> Whether or not it might be a good idea: it can't be done, for
>> compatibility with prior releases.
> 
> Of course, but Python development continues... Into the future..

It's clear that Python can't stay as VS 2003 forever. I don't
know what Microsoft's product plans are, but I hope that we
could skip VS 2005 entirely, and move to VS 2007 for Python 2.6.
That, of course, assumes that there is a VS 2007 release
sufficiently before Python 2.6.

Regards,
Martin


From claudio.grondi at freenet.de  Fri Sep  8 11:15:22 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Fri, 08 Sep 2006 17:15:22 +0200
Subject: ANN: Leo 4.4.1.1 final released
In-Reply-To: <6OdMg.1075$fK7.833@newsfe03.lga>
References: <6OdMg.1075$fK7.833@newsfe03.lga>
Message-ID: <eds1e7$ol7$1@newsreader2.netcologne.de>

Edward K. Ream wrote:
> Leo 4.4.1.1 final                                       September 3, 2006
> Leo 4.4.1.1 final is available at:
> http://sourceforge.net/project/showfiles.php?group_id=3458&package_id=29106
Doesn't run on my system (installed with the .exe):

Python 2.4.2
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\>D:\SftwLib\Leo\src\leo.py
leoID = CGr (in D:\SftwLib\Leo\config)
reading settings in D:\SftwLib\Leo\config\leoSettings.leo
Traceback (most recent call last):
   File "D:\SftwLib\Leo\src\leo.py", line 320, in ?
     run()
   File "D:\SftwLib\Leo\src\leo.py", line 95, in run
     g.app.config.readSettingsFiles(fileName,verbose)
   File "D:\SftwLib\Leo\src\leoConfig.py", line 1341, in readSettingsFiles
     c = self.openSettingsFile(path)
   File "D:\SftwLib\Leo\src\leoConfig.py", line 1311, in openSettingsFile
     c,frame = g.app.newLeoCommanderAndFrame(path,updateRecentFiles=False)
   File "D:\SftwLib\Leo\src\leoApp.py", line 568, in newLeoCommanderAndFrame
     c.finishCreate()
   File "D:\SftwLib\Leo\src\leoCommands.py", line 181, in finishCreate
     def finishCreate (self):  # New in 4.4.
   File "D:\SftwLib\Leo\src\leoCommands.py", line 187, in finishCreate
     c = self ; p = c.currentPosition()
TypeError: currentPosition() takes exactly 2 arguments (1 given)

-------------------------------------------------------

???

Claudio Grondi


From sjdevnull at yahoo.com  Wed Sep 27 12:51:16 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 27 Sep 2006 09:51:16 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159359326.496431.293370@i3g2000cwc.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159359326.496431.293370@i3g2000cwc.googlegroups.com>
Message-ID: <1159375876.352551.22600@m7g2000cwm.googlegroups.com>

cartercc at gmail.com wrote:
> You can also get a rough measure ot the popularity of web scripting
> languages from an analysis of the URLs. The last time I did this was in
> 2003, and as I recall, these were the results:
> PHP 30% and increasing
> Perl 28% and falling
> ASP 25% and falling fast
> ColdFusion 6% and steady
> Java and JSP 5% and increasing
> others, Python, Ruby, ...

At the site I'm working on, you'd see a URL like
http://www.whatever.com/login or http://www.whatever.com/boards?id=131
-- how would you count them?  Such (extensionless) URLs are far more
common in the Python, Ruby, and Java world in my experience than the
PHP, Perl, and ASP world, so my first instinct looking at your numbers
is to believe they're just biased toward languages that more often put
the extension in the URL.



From esj at harvee.org  Fri Sep 29 16:19:16 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 16:19:16 -0400
Subject: another distutils question
In-Reply-To: <efju33$h88$1@sea.gmane.org>
References: <efjmjp$mr2$1@sea.gmane.org>	<efjpma$16d$1@sea.gmane.org>	<451D753E.7060707@harvee.org>	<efjsuo$d73$1@sea.gmane.org>	<451D7994.40100@harvee.org>
	<efju33$h88$1@sea.gmane.org>
Message-ID: <451D7FC4.9090003@harvee.org>

Robert Kern wrote:
> Eric S. Johansson wrote:
> 
>> Now I get to puzzle out how to install the CGI plus images plus 
>> stylesheets plus plus plus mess.  Probably a bit outside of the scope of 
>> distutils even if the CGI programs are Python.  ;-)
> 
> I recommend installing the data inside the package itself. In 2.4, use the 
> package_data keyword in setup().
> 
>    http://docs.python.org/dist/node12.html

2.4 is good.  Eventually I will upgrade to eggs but I'm making enough 
changes right now to make me crazy.

maybe I am over thinking this problem.  I needed a CGI scripts to go to 
a predictable place so I can build the wrappers.  For all I care, that 
could be another Python module in the site-packages hierarchy (assuming 
they are executable).  But I have separate targets for the images etc.. 
  The reason being that I organize my sites as 
/var/www/{html,data,images)/<site>.  Don't ask.

So what I have seen so far says that to be able to take data from a 
series of directories scatter it to other directories may be out of 
scope.  It's okay.  If I have to write a wrapper, it won't be the first 
time.

--- eric



From kylotan at gmail.com  Mon Sep  4 05:00:41 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 4 Sep 2006 02:00:41 -0700
Subject: raw audio in windows
In-Reply-To: <1157131999.632715.190380@m79g2000cwm.googlegroups.com>
References: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
	<1157105585.717096.99690@m73g2000cwd.googlegroups.com>
	<mailman.10241.1157106075.27775.python-list@python.org>
	<1157131999.632715.190380@m79g2000cwm.googlegroups.com>
Message-ID: <1157360441.870798.291150@b28g2000cwb.googlegroups.com>

Jay wrote:
> So, are you saying this would be possible to do with the PlaySound
> function?

Fredrik is often terse. ;)  I think what he's saying is that when I
said you could pass a .wav file to an external application, he showed
that you could pass it to a Python module instead. I think you still
need to get it into .wav format first, though this can apparently be in
memory rather than on disk.

-- 
Ben Sizer



From utabintarbo at gmail.com  Thu Sep  7 15:08:57 2006
From: utabintarbo at gmail.com (utabintarbo)
Date: 7 Sep 2006 12:08:57 -0700
Subject: Random image downloader for newsgroups (first script)
In-Reply-To: <mailman.131.1157654264.5279.python-list@python.org>
References: <5lYLg.8769$a9.2590@fe2.news.blueyonder.co.uk>
	<4mb60kF5cta3U2@uni-berlin.de>
	<mailman.131.1157654264.5279.python-list@python.org>
Message-ID: <1157656137.768227.111370@i42g2000cwa.googlegroups.com>


Skip Montanaro wrote:
> > > SERVER = "news.server.co.uk" #Insert news server here
> > > GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here
> >
> > Just why do I imagine there will be an adult newsgroup in the end....?
>
> I can see the freshmeat announcement now: "Random Boob Visualizer 1.0"...
> 
> Skip

mmmmmm, boobs.

;-)



From jgodoy at gmail.com  Sat Sep 30 11:50:45 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 30 Sep 2006 12:50:45 -0300
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de>
Message-ID: <877izlxsiy.fsf@gmail.com>

Mirco Wahab <wahab at chemie.uni-halle.de> writes:

> I don't see the point here, this example can be
> translated amost 1:1 to Perl and gets much more
> readable in the end, consider:

I could make it shorter in Python as well.  But for a newbie that haven't seen
the docs for strings in Python I thought the terse version would be more
interesting. 

At least he'll see that there are methods to do what he wants already builtin
with the language.

> sub print_message {
>    if   (/^(track=)/ ){ print 'Your track is '   .substr($_, length $1)."\n" }
>    elsif(/^(title=)/ ){ print 'It\'s a title of '.substr($_, length $1)."\n" }
>    elsif(/^(artist=)/){ print 'It was played by '.substr($_, length $1)."\n" }
>    else               { print "Oops, I dunno the pattern for this line...\n" }
> }
>
> print_message for ( 'track="My favorite track"', 'title="My favorite song"',
>                     'artist="Those Dudes"',      'Something else' );

If I were writing in Perl I'd not use substr like this and would write code
similar to the one the OP posted (i.e., /^track=(.*)/).

> OK, I do Perl and Python side by side and didn't reach
> that point so far, maybe beause I read the Friedel-Book
>  ( http://www.oreilly.com/catalog/regex2/reviews.html )
> sometimes and actually *like* the concept of regular expressions.

I like them as well.  I just don't see the need to use them everywhere. :-) 


-- 
Jorge Godoy      <jgodoy at gmail.com>


From h.trammel at insightbb.com  Fri Sep 29 22:32:46 2006
From: h.trammel at insightbb.com (Harold Trammel)
Date: Fri, 29 Sep 2006 21:32:46 -0500
Subject: MySQLdb for Python 2.5
Message-ID: <5_ednYPtY9vSSoDYnZ2dnUVZ_rqdnZ2d@insightbb.com>

Hi everyone,

Does anyone know the status of a version of MySQLdb that will work with 
Python 2.5?  I will accept a workaround if you know one.  Thanks in advance.

Harold Trammel


From nomail2me at charter.net  Wed Sep  6 16:08:29 2006
From: nomail2me at charter.net (Jim Britain)
Date: Wed, 06 Sep 2006 16:08:29 -0400
Subject: string search and modification
Message-ID: <209uf25ufjhf817ngsbuompvrggl7tf2ln@4ax.com>

I know absolutely nothing about Python.  My background is shell
scripts assembly language and C programming.  Currently I work network
support.

This is a portion of a Python script written by  aaronsinclair.  the
full script can be found at: 
http://forums.ev1servers.net/printthread.php?t=50435&page=3&pp=25

It monitors sendmail logfiles for dictionary attacks, and blocks with
additions to iptables.



The part I am having a problem with is the regular expression in the
re.search function.

Basicly, it is insufficiently qualified.

Troublesome example logfile line:
Sep  6 00:46:32 tabor sendmail[26642]: k867kMH5026642:
dsl-kk-dynamic-013.38.22.125.touchtelindia.net [125.22.38.13] (may be
forged)
Possible SMTP RCPT flood, throttling.

(all one line in the logfile)

What is happenning, is there are two sections that will qualify in
this logfile line, and it matches on the wrong one.

What I would like to happen, is to return the value from within the
brackets, in every successful match.

I have tried putting \[ in the beginning of the string, but am
unsuccessful editting the qualifying character back out again, and
returning the real ip string. (If indeed I did even get a match).

This script runs in the background, and I would have to build a
complete test environ, and rewrite the whole darn thing to run
visibly, and use different files.

I thought asking -- like a beginner -- for the trivial solution.
(besides being up all night and all day).

Thanks in advance for any help.  Quick searches online for tutorial
documentation and the books I have.. met with horrible results in
finding a solution.

I would like to match [123.123.123.123] (including the qualifying
brackets), but be able to simply return the contents, without the
brackets.

(Perl would be easy, but it's not Python)

def identifyHost(self):
       
 for line in self.fileContents:
  if re.search("throttling", line.lower()):
     ip = re.search("[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}",
line)

                        if ip.group() in self.ignoreList:
                                continue
                        if not ip.group() in self.banList:
                                self.banList.append(ip.group())


From rdrink at artic.edu  Fri Sep  1 02:56:28 2006
From: rdrink at artic.edu (rdrink)
Date: 31 Aug 2006 23:56:28 -0700
Subject: pysqlite - simple problem
Message-ID: <1157093787.952044.180020@74g2000cwt.googlegroups.com>

I am just getting into pysqlite (with a fair amount of Python and MySQL
experience behind me) and have coded a simple test case to try to get
the hang of things...
yet have run into a 'stock simple' problem...

I can create a database 'test.db', add a table 'foo' (which BTW I
repeatedly DROP on each run) with one INTGER column 'id', and can
insert data into with:
cur.execute("INSERT INTO foo (id) VALUES (200)")
con.commit()
(and fetch back out)
all with no problem. But...

If I try to expand this to:
num = 200
cur.execute("INSERT INTO foo (id) VALUES (?)", num)
I get the error...
Traceback (most recent call last):
  File "/home/rdrink/Programming/Python/Inner_Square/sqlite_test.py",
line 46, in ?
    cur.execute("INSERT INTO foo (id) VALUES (?)", num)
  File "/usr/lib/python2.4/site-packages/sqlite/main.py", line 255, in
execute
    self.rs = self.con.db.execute(SQL % parms)
TypeError: not all arguments converted during string formatting
... which obviously points to a 'typing' problem.
?? but where ??
>From all the docs I have read Python 'int' and sqlite INTEGER should
pass back and forth seemlessly...
And I have even tried to reduce things to simply:
cur.execute("INSERT INTO foo (id) VALUES (?)", 200)
but still raise the same error.

So this has to be something stupidly simple... but for the life of me I
can't see it.

Advice, suggestions, pointers for the noob?

rd



From stephane_bard at tele2.fr  Wed Sep 27 15:04:35 2006
From: stephane_bard at tele2.fr (=?ISO-8859-1?Q?st=E9phane_bard?=)
Date: Wed, 27 Sep 2006 21:04:35 +0200
Subject: windev vs python SOS
Message-ID: <nXzSg.195$nn3.31@nntpserver.swip.net>

hello, my boss ask me to prefer windev to python.
I have to argue

  - python work on multiple platform (linux, mac, windows)
	A good point but it didn't interest him. Because
	we want to choose a language for prototyping.
	So multi platform is not enough.

  - python and windev are fast to develop

  - windev as a good IDE, python? boa-constructor is ok with wxpython

  - python is open source (that's not an argument for my boss, sorry 
it's 	a boss ...)

any idea for a strong argument ?


	



From steve at holdenweb.com  Fri Sep 29 09:40:01 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 29 Sep 2006 14:40:01 +0100
Subject: Pysqlite tables in RAM
In-Reply-To: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
References: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
Message-ID: <efj7lt$s5b$1@sea.gmane.org>

Ranjitha wrote:
> Hi all,
> 
> I'm relatively new to python and am facing a problem with database
> access
> 
> I want to store my data in a database on the disk. I also want to be
> able to reload the tables into the RAM whenever I have a lot of disk
> accesses and commit the changes back to the database. There is an
> option of storing the data in the RAM where you connect to :memory:
> instead of a DB file. The problem with this is that the data is lost
> everytime you close the connection to the database. Could somebody
> suggest a way to load the tables into the RAM as tables and not as some
> lists or dictionaries?
> 
As long as your data isn't too voluminous it's quite practical to read 
it from a SQLite database on disk into a SQLite database in memory, 
given the same table structures on each.

But if the data isn't too voluminous then probably any 
halfway-reasonable database will also cache it effectively. So you may 
win less performance that you expect.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From eurleif at ecritters.biz  Mon Sep 25 04:11:52 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Mon, 25 Sep 2006 04:11:52 -0400
Subject: unicode, bytes redux
In-Reply-To: <7xy7s8crty.fsf@ruckus.brouhaha.com>
References: <mailman.552.1159166294.10491.python-list@python.org>
	<7xy7s8crty.fsf@ruckus.brouhaha.com>
Message-ID: <45178f23$0$19894$4d3efbfe@news.sover.net>

Paul Rubin wrote:
> Duncan Booth explains why that doesn't work.  But I don't see any big
> problem with a byte count function that lets you specify an encoding:
> 
>      u = buf.decode('UTF-8')
>      # ... later ...
>      u.bytes('UTF-8') -> 3
>      u.bytes('UCS-4') -> 4
> 
> That avoids creating a new encoded string in memory, and for some
> encodings, avoids having to scan the unicode string to add up the
> lengths.

It requires a fairly large change to code and API for a relatively 
uncommon problem. How often do you need to know how many bytes an 
encoded Unicode string takes up without needing the encoded string itself?


From johnjsal at NOSPAMgmail.com  Mon Sep 11 14:58:47 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 11 Sep 2006 18:58:47 GMT
Subject: best small database?
In-Reply-To: <65sk091eu0l3.axwa5wrm2dtq.dlg@40tude.net>
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
	<ee3vme$cjj$1@panix3.panix.com>
	<65sk091eu0l3.axwa5wrm2dtq.dlg@40tude.net>
Message-ID: <HliNg.2734$No6.53788@news.tufts.edu>

Thorsten Kampe wrote:

> But sqlite is not "pure Python" because it's just a wrapper around
> sqlite (which has to be installed separately)...

But that's the point. Once 2.5 is released, sqlite is built-in. Unless 
there's more to it that I don't know, and something must still be 
installed? But that makes no sense.


From sjmachin at lexicon.net  Fri Sep 29 11:02:44 2006
From: sjmachin at lexicon.net (John Machin)
Date: 29 Sep 2006 08:02:44 -0700
Subject: Problems with Python 2.5 installer.
In-Reply-To: <mailman.927.1159530594.10491.python-list@python.org>
References: <1159524086.088796.75980@b28g2000cwb.googlegroups.com>
	<mailman.927.1159530594.10491.python-list@python.org>
Message-ID: <1159542164.799707.236360@e3g2000cwe.googlegroups.com>


Matthew Warren wrote:
> -----Original Message-----
> From: python-list-bounces+matthew.warren=digica.com at python.org
> [mailto:python-list-bounces+matthew.warren=digica.com at python.org] On
> Behalf Of paw
> Sent: 29 September 2006 11:01
> To: python-list at python.org
> Subject: Re: Problems with Python 2.5 installer.
>
>
> John Machin wrote:
> > paw wrote:
> > > I have ran the MSI installer for Python 2.5 several times attempting
> to
> > > install to C:
> > > Python, however all of the files are placed in C:\ .  The installer
> is
> > > told to only install files for me, beyond that I have only chosen
> the
> > > defaults.
> >
> > What do you mean by "install to C: <newline> Python"? Can you tell us
> > (unambiguously, on one line) what directory you chose? Is there any
> > good reason why you didn't take the default, which is
> >     C:\Python25
> > ?
>
>
> Could this happen if c:\python does not exists and creating it fails for
> some reason, or if permissions are incorrect?

Are you installing it as a "normal" user or as an Administrator? I have
occasionally had problems (not when installing Python) as a "normal"
user not being allowed to create a folder at the C:\ level.

I'd suggest this;
(1) log on as as administrator (i.e. with full rights)
(2) do an "all users" installation
(3) You haven't come up with a good reason for doing otherwise, so read
my lips: *** use the default installation folder C:\Python25 *** you'll
be happy you did, when Python 2.6 comes out and you want to have both
installed.

HTH,
John



From skip at pobox.com  Wed Sep 27 14:27:27 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 27 Sep 2006 13:27:27 -0500
Subject: Difference between two dates in seconds
In-Reply-To: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
Message-ID: <17690.49807.47369.311015@montanaro.dyndns.org>

    Claes> calculating the difference between two dates in seconds

>>> import datetime
>>> now1 = datetime.datetime.now()
>>> # dum dee dum ...
... now2 = datetime.datetime.now()
>>> now2-now1
datetime.timedelta(0, 12, 781540)

Skip


From __peter__ at web.de  Fri Sep 15 12:57:05 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 15 Sep 2006 18:57:05 +0200
Subject: Coding Nested Loops
References: <mailman.138.1158336868.10491.python-list@python.org>
Message-ID: <eeeluk$fqv$02$1@news.t-online.com>

Rich Shepard wrote:

>    I want to code what would be nested "for" loops in C, but I don't know
>    the
> most elegant way of doing the same thing in python. So I need to learn how
> from you folks. Here's what I need to do: build a database table of 180
> rows. Each row contains 31 columns: the first is an automatically
> incremented integer as the primary key; the next two fields can each
> contain one of three strings held in dictionaries, the last 28 fields are
> random floats from a third dictionary.
> 
>    Of the 180 total rows, each of the three values in the first dictionary
> will be the second field in 60 rows. Within each set of 60 rows, there
> will be 13 rows containing the first value from the second dictionary, 14
> rows containing the second value from the second dictionary, and 33 rows
> from the third value in that dictionary. Again, the final 28 fields in
> each row are random values from the third dictionary.
> 
>    I suspect that iterators might be the way to accomplish this, but I
>    really
> don't know. However, I would like to learn so that I can solve similar
> problems by myself.

It's not clear to me why you would use dictionaries, especially as they are
unordered; I used lists instead:

from itertools import count, izip, cycle, chain, repeat, starmap, imap
from random import choice

first =  ["X", "Y", "Z"]
second = ["A", "B", "C"]
second_count = [13, 14, 33]
third = [1.1, 2.2, 3.3, 4.4]

random_floats = imap(choice, repeat(third))
columns = [
    count(),
    chain(*[repeat(i, 60) for i in first]),
    cycle(chain(*starmap(repeat, izip(second, second_count))))
]
columns.extend(repeat(random_floats, 28))

for row in izip(*columns):
    print row

Now that is a nice occasion to get acquainted with the itertools module...

Peter



From dkuhlman at rexx.com  Wed Sep  6 17:45:44 2006
From: dkuhlman at rexx.com (Dave Kuhlman)
Date: Wed, 06 Sep 2006 21:45:44 GMT
Subject: Where are the source files for the Python FAQs?
Message-ID: <ckHLg.25268$gY6.19867@newssvr11.news.prodigy.com>

I've recently implemented an output writer for Docutils that
produces .odt/ODF files for oowriter from reST (restructured text).

I'd like to feed the Python FAQs through my odtwriter, to find out
how well it does at formatting.  But, I can't find the source.

Can someone tell me the location of the reST source files for the
Python FAQs.  I have not been able to find them.

By the way, for anyone interested, my odtwriter is in the Docutils
sandbox under dkuhlman/OpenDocument.

Dave

-- 
http://www.rexx.com/~dkuhlman


From rtw at freenet.co.uk  Mon Sep 25 16:39:52 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Mon, 25 Sep 2006 15:39:52 -0500
Subject: Printing a percent sign
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
Message-ID: <Xns9849DC7DB4102rtwfreenetREMOVEcouk@216.196.109.145>

 wrote in news:1159216705.649649.116260 at d34g2000cwd.googlegroups.com in 
comp.lang.python:

> Hi all. How do I escape the "%" sign in a print statement so that it
> prints? Thanks.
> 

print "%%"

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From ejatwellkeeperdotcom  Thu Sep 28 14:54:14 2006
From: ejatwellkeeperdotcom (Erik Johnson)
Date: Thu, 28 Sep 2006 12:54:14 -0600
Subject: preemptive OOP?
References: <e9USg.47$1n3.432@news.tufts.edu>
Message-ID: <451c1a6d$1@nntp.zianet.com>


> class MyNotebook(wx.Notebook):
>      def __init__(self, parent):
>          wx.Notebook.__init__(self, parent)

> So my question in general is, is it a good idea to default to an OOP
> design like my second example when you aren't even sure you will need
> it? I know it won't hurt, and is probably smart to do sometimes, but
> maybe it also just adds unnecessary code to the program.

    My feeling is that there is no good reason to add the complexity of your
own custom classes if they provide no additional data or behaviour. If you
know you have plans to add your own attributes and/or methods to MyNotebook
soon, there's no harm in doing this now, but why? You can always create your
own custom subclass at the point when you have something of value to add and
through the mircale of polymorphism, it will function everywhere a Notebook
would.

-ej




From onurb at xiludom.gro  Fri Sep 29 08:47:11 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 29 Sep 2006 14:47:11 +0200
Subject: windev vs python SOS
In-Reply-To: <1159528038.548533.304250@c28g2000cwb.googlegroups.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159528038.548533.304250@c28g2000cwb.googlegroups.com>
Message-ID: <451d15cf$0$23901$636a55ce@news.free.fr>

aaaWindev at gmail.com wrote:
> Hi St?phane,
> 
> st?phane bard wrote:
>> hello, my boss ask me to prefer windev to python.
>> I have to argue

You don't. You're one of the marketing droids from PC-Soft

<ot>
To everyone here : such interventions are a well-known part of PC-Soft
(the company that sells the "product" discussed here) marketing
strategy. We've seen quite a lot of such posts on the windew-users
mailing list and newsgroup.
</ot>

> First, no matter how good is Python, you should not desagree with your
> boss.

Ho yes ? Even if the boss finally decides that he'd better trust his
team than marketing droids ?

> Second, Windew is quite good and fun, 

Yes, sooo good and fun. A good and fun unusable clickodrom nightmare
with a good and fun dumbed-down basic as language and a good and fun
indexed sequential file format as "RDBMS".

lol.

> you will love it.

I've never met a programmer that "loved" Windev. I've met some
"programmers" that where able to bear with it mostly because they didn't
even knew anything else, but even these guys didn't "love" trying to
make this crap do something useful.

Heck, compared to PC-Soft, one could find that Microsoft's marketing
strategy is based on delivering smart, usable, cleanly debugged products
and being helpful to users...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From shalinmangar at gmail.com  Sat Sep 23 05:26:40 2006
From: shalinmangar at gmail.com (shalinmangar)
Date: 23 Sep 2006 02:26:40 -0700
Subject: Blogging solution on SkunkWeb
Message-ID: <1159003600.023275.161790@d34g2000cwd.googlegroups.com>

Hi,

I use SkunkWeb as my application server for my web application. I
intend to put up a blog on the website but I haven't been able to find
out a good blogging software for SkunkWeb. Most of them are based on
Zope/Plone or use CGI or mod_python.

The basic features I need are:
1. Multi-user blogs
2. Post Archives
3. RSS/Atom Syndication
4. Categorization of posts

Please suggest a good blogging solution based on SkunkWeb which can
satisfy my requirements.

Regards,
Shalin.



From rdsteph at mac.com  Mon Sep 25 10:35:45 2006
From: rdsteph at mac.com (rdsteph at mac.com)
Date: 25 Sep 2006 07:35:45 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
In-Reply-To: <hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
Message-ID: <1159194945.283831.236510@b28g2000cwb.googlegroups.com>

Metaperl,

Steve makes a good point. Fredrik is one of the most important
contributors of Python code, tools, etc and as far as I am concerned,
that is so important that it gives him the right to be cranky from tiem
to time.

If somebody like me were to get cranky and negative, on the other hand,
that would be unacceptable.

Actual production of useful code is of paramount importance ;-))

Ron Stephens



From bearophileHUGS at lycos.com  Wed Sep 13 19:34:55 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 13 Sep 2006 16:34:55 -0700
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <1158190265.017412.203500@h48g2000cwc.googlegroups.com>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
	<1158190265.017412.203500@h48g2000cwc.googlegroups.com>
Message-ID: <1158190495.438869.222500@h48g2000cwc.googlegroups.com>

Better:

def clean(d):
    for key,val in d.items():
        if isinstance(val, dict):
            val = clean(val)
        if val is None or val == {}:
            del d[key]
    return d

a = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
print clean(a) # Out: {1: {2: 2, 3: {2: 2}}, 2: 2}
b = {1: {1: {1: None, 2: {1: None}}}, 2: 2, 3: None}
print clean(b) # Out: {2: 2}
c = {1: {1: {1: None, 2: {1: None}}}, 2: 2, 3: 0}
print clean(c) # Out: {2: 2, 3: 0}



From wahab at chemie.uni-halle.de  Sat Sep 30 10:44:13 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Sat, 30 Sep 2006 16:44:13 +0200
Subject: builtin regular expressions?
In-Reply-To: <451e37a5$1@news.vo.lu>
References: <451e37a5$1@news.vo.lu>
Message-ID: <efm04n$lb3$1@mlucom4.urz.uni-halle.de>

Thus spoke Antoine De Groote (on 2006-09-30 11:24):

> Can anybody tell me the reason(s) why regular expressions are not built 
> into Python like it is the case with Ruby and I believe Perl? Like for 
> example in the following Ruby code
> I'm sure there are good reasons, but I just don't see them.
> Python Culture says: 'Explicit is better than implicit'. May it be 
> related to this?

I think it is exactly because the /\b(\d+)\s+\/\//
together with $_ and $whatever=~/\/\/(?=\d+)/ are
seen as the 'line noise' everybody talks about ;-)

Regex as part of the core language expressions
makes code very very hard to understand for
newcomers, and because Python is ...

To invoke an additional cost in using Regexes,
the language simply prevents them in a lot of
situations. Thats it. You have to think three
times before you use them once. In the end,
you solve the problem 'elsewise' because of
the pain invoked ;-)

Regards

Mirco



From george.sakkis at gmail.com  Fri Sep 29 02:17:05 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 28 Sep 2006 23:17:05 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
	<mailman.918.1159509387.10491.python-list@python.org>
Message-ID: <1159510625.265885.226700@i3g2000cwc.googlegroups.com>

Steve Holden wrote:

> MonkeeSage wrote:
> > So far as unobfuscated versions go, how about the simple:
> >
> > def to_bin(x):
> >   out = []
> >   while x > 0:
> >     out.insert(0, str(x % 2))
> >     x = x / 2
> >   return ''.join(out)
> >
> > Regards,
> > Jordan
> >
>   >>> to_bin(0)
> ''
>
> 6/10: try harder :)

Ok, how about a fast *and* readable version? Works for non-negatives,
but negatives are trivial to add if necessary:

from array import array

def fast2bin(n):
    s = array('c')
    while n>0:
        s.append('01'[n&1])
        n >>= 1
    s.reverse()
    return s.tostring() or '0'

try: import psyco
except ImportError: pass
else: psyco.bind(fast2bin)


George



From stephane_bard at tele2.fr  Sun Sep 24 06:02:00 2006
From: stephane_bard at tele2.fr (=?ISO-8859-1?Q?st=E9phane_bard?=)
Date: Sun, 24 Sep 2006 12:02:00 +0200
Subject: parsing java files
In-Reply-To: <1158873628.679077.285530@m73g2000cwd.googlegroups.com>
References: <vXCQg.233$HX5.50@nntpserver.swip.net>
	<1158873628.679077.285530@m73g2000cwd.googlegroups.com>
Message-ID: <45165798.4040106@tele2.fr>

i use javaclass and it's great !!
this is what i need. thank's paul

gabriel thank's too for advice


Paul Boddie a ?crit :
> st?phane bard wrote:
>> hello
>> i would like to parse java files an detect
>> class name's, attributes name's type's and visibility (and or list of
>> methods).
>>
>> is there any module who can parse easily a java file without using
>> (jython)?
> 
> There are probably a number of standard parser solutions which can
> expose such information. However, another solution is that provided by
> the javaclass package:
> 
> import javaclass.classfile # http://www.python.org/pypi/javaclass
> 
> # Read the contents of the compiled class.
> 
> f = open("org/w3c/dom/Element.class", "rb")
> s = f.read()
> f.close()
> 
> # Process the class data.
> 
> c = javaclass.classfile.ClassFile(s)
> 
> # Obtain the internal name of the class.
> 
> name = unicode(c.interfaces[0].get_name()) # u'org/w3c/dom/Node'
> for m in c.methods:
> 
>     # Obtain each method name and access details.
> 
>     method_name = unicode(m.get_name()) # eg. u'getTagName'
>     is_public = m.access_flags & javaclass.classfile.PUBLIC
> 
> Obviously, this is more convoluted than it needs to be, but the
> original purpose of the module employed is to assist in translating
> Java class data to other forms - notably Python bytecode - although
> such experiments haven't been continued by myself for quite some time.
> The class decoding part illustrated above should be quite usable,
> however.
> 
> Paul
> 


From bj_666 at gmx.net  Wed Sep  6 02:54:50 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 06 Sep 2006 08:54:50 +0200
Subject: Better way to replace/remove characters in a list of strings.
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
	<edh04n$o0g$1@news.lrz-muenchen.de>
	<1157367752.806830.317400@m79g2000cwm.googlegroups.com>
	<1157374314.068280.302480@e3g2000cwe.googlegroups.com>
	<44fcb9ca$0$31422$626a54ce@news.free.fr>
	<1157487843.814540.205910@i42g2000cwa.googlegroups.com>
	<1157497380.382483.127700@i3g2000cwc.googlegroups.com>
Message-ID: <pan.2006.09.06.06.54.49.295341@gmx.net>

In <1157497380.382483.127700 at i3g2000cwc.googlegroups.com>, George Sakkis
wrote:

> Chris Brat wrote:
>
>> Wouldn't this only cause problems with large lists - for once off
>> scripts with small lists it doesn't seem like a big issue to me.
> 
> The extra memory to allocate the new list is usually a minor issue; the
> important one is correctness, if the original list is referenced by
> more than one names.

It's not the allocation of the new list itself that might be an issue but
the content, which will be copied in this case, before the old list and
its content is freed.  If you have 200 MiB worth of strings in the list
and change all 'u's to 'x's with

  large_list = [item.replace('u', 'x') for item in large_list]

another list with 200 MiB strings will be created.

Ciao,
	Marc 'BlackJack' Rintsch


From fredrik at pythonware.com  Mon Sep 25 16:47:27 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 22:47:27 +0200
Subject: Printing a percent sign
In-Reply-To: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
Message-ID: <ef9f8v$tq2$1@sea.gmane.org>

stephen at theboulets.net wrote:

> Hi all. How do I escape the "%" sign in a print statement so that it
> prints? Thanks.

print doesn't do anything with percent signs:

 >>> print "%"
%

if you're doing string formatting using the "string % tuple" operator, 
use two percent signs to get a percent sign in the output:

 >>> print "%s: %d%%" % ("level", 48)
level: 48%

</F>



From amit.man at gmail.com  Mon Sep 11 15:59:48 2006
From: amit.man at gmail.com (noro)
Date: 11 Sep 2006 12:59:48 -0700
Subject: efficient text file search -solution
In-Reply-To: <1157999782.414287.83890@p79g2000cwp.googlegroups.com>
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
	<1157999782.414287.83890@p79g2000cwp.googlegroups.com>
Message-ID: <1158004788.549519.172620@i3g2000cwc.googlegroups.com>

OK, am not sure why, but

fList=file('somefile').read()
if fList.find('string') != -1:
   print 'FOUND'

works much much faster.

it is strange since i thought 'for line in file('somefile')' is
optemized and read pages to the memory,
i guess not..

George Sakkis wrote:
> noro wrote:
>
> > Is there a more efficient method to find a string in a text file then:
> >
> > f=file('somefile')
> > for line in f:
> >     if 'string' in line:
> >          print 'FOUND'
> >
> > ?
>
> Is this something you want to do only once for a given file ? The
> replies so far seem to imply so and in this case I doubt that you can
> do anything more efficient. OTOH, if the same file is to be searched
> repeatedly for different strings, an appropriate indexing scheme can
> speed things up considerably on average.
> 
> George



From esj at harvee.org  Wed Sep 27 13:20:38 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Wed, 27 Sep 2006 13:20:38 -0400
Subject: R.S.I. solutions?
In-Reply-To: <5ZxSg.2103$Y24.1374@newsread4.news.pas.earthlink.net>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>	<4nqrt0Fbp16mU1@uni-berlin.de>	<slrnehi8l8.4bt.nick@irishsea.home.craig-wood.com>	<mailman.786.1159349176.10491.python-list@python.org>
	<5ZxSg.2103$Y24.1374@newsread4.news.pas.earthlink.net>
Message-ID: <451AB2E6.4060301@harvee.org>

Dennis Lee Bieber wrote:
> On Tue, 26 Sep 2006 15:03:41 -0400, "Eric S. Johansson" <esj at harvee.org>
> declaimed the following in comp.lang.python:
> 
>> What's really strange is that most people think laptop keyboards are 
>> horrible but I absolutely love the ones I've had from Dell and Acer 
> 
> 	They are... There is no height stagger on the keys... Hitting the
> lower rank requires pulling one's fingers UP as you draw the tip back,
> and going nearly flat to reach the upper ranks (which, for my short
> fingers, means I tend to hit both the upper rank and the home row at the
> same time)

that explains it.  My hands are larger than most.  On a typical PC 
keyboard, I can hold down the control key with my little finger and hit 
all alphanumeric keys without straining (too much).

... Strokes are too short to -- I learned to type with old
> typewriters, where the technique was to "snap" at the keycap to get
> inertia to complete the stroke; one's fingers did not follow the key cap
> all the way to the end of the stroke, but was pulling back for the next
> stroke while the mass of the letter-head and key mechanism kept the key
> moving down.

never learned that trick.  Even with the old typewriters, I drove the 
key all the way home.  (Are we the only people on this list that 
actually used a manual typewriter complete with carbon paper and whiteout?)

but I do like short stroke because it is less finger movement and 
because the underlayment a laptop keyboard is more flexible than a 
desktop keyboard, I get some bounce which reduces the end of travel shock.

The problem I have with current keyboards is that there is so much 
resistance on the keystroke that you have to force the key all the way 
down until you hit bottom hard.  At least, that's the way it feels to my 
fingers.

> 	Of course, even desktop keyboards aren't designed properly -- using
> the tilt-feet gives a usable slope on the keys, but also changes the
> angle of the keys... Instead of pushing the key vertically, one now has
> to push them "away"...

yeah, given a choice, I would push most keyboards away.

> 
> 	And does anyone remember when key caps were double-injection molded,
> rather than dry-transfer lettering?

I might even still have a couple in the basement.  some of the keys 
don't work but they still go clack-clack-clack when you drop them.

---eric



From uid09012_ti at martin-collins.de  Sat Sep  9 02:57:05 2006
From: uid09012_ti at martin-collins.de (Francach)
Date: 8 Sep 2006 23:57:05 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <1157756579.885367.294880@m73g2000cwd.googlegroups.com>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
	<1157720105.181682.169290@m73g2000cwd.googlegroups.com>
	<1157723311.085204.168070@i42g2000cwa.googlegroups.com>
	<1157756579.885367.294880@m73g2000cwd.googlegroups.com>
Message-ID: <1157785025.586132.310250@h48g2000cwc.googlegroups.com>

Hallo George,

thanks a lot! This is exactly the direction I had in mind.
Your script demonstrates nicely how Beautiful Soup works.

Regards,
Martin.

George Sakkis wrote:
> Francach wrote:
> > Hi George,
> >
> > Firefox lets you group the bookmarks along with other information into
> > directories and sub-directories. Firefox uses header tags for this
> > purpose. I'd like to get this grouping information out aswell.
> >
> > Regards,
> > Martin.
>
> Here's what I came up with:
> http://rafb.net/paste/results/G91EAo70.html. Tested only on my
> bookmarks; see if it works for you.
>
> For each subfolder there is a recursive call that walks the respective
> subtree, so it's probably not the most efficient solution, but I
> couldn't think of any one-pass way to do it using BeautifulSoup.
> 
> George



From gdamjan at gmail.com  Fri Sep 22 08:18:44 2006
From: gdamjan at gmail.com (Damjan)
Date: Fri, 22 Sep 2006 14:18:44 +0200
Subject: Don't use regular expressions to "validate" email addresses (was:
	Ineed some help with a regexp please)
References: <mailman.434.1158888340.10491.python-list@python.org>
	<4513a64a$0$905$636a55ce@news.free.fr>
Message-ID: <4513d40c$0$75029$14726298@news.sunsite.dk>

>> you'd create something to allow anyone to
>> potentially spam the hell out of a system...
> 
> I'm sorry, but I fail to see how validating (or not) an email address
> could prevent using a webmail form for spamming. Care to elaborate ?

The best way would be to implement some limiting features. Try two times
from the same IP address in less than 10 minutes and you are banned for the
day. Or some such.


-- 
damjan


From metaperl.etc at gmail.com  Sun Sep 24 15:35:40 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 24 Sep 2006 12:35:40 -0700
Subject: One program in different GUI Toolkits
In-Reply-To: <eeqn0i$d8n$1@newsreader2.utanet.at>
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
Message-ID: <1159126539.868204.222860@k70g2000cwa.googlegroups.com>


Franz Steinhaeusler wrote:
> Hello NG,
>
> I have a suggestion.
>
> For simplifying learning or switching between different GUI
> Toolkits, I could imagine to have one short clearly presented
> program in different GUI Toolkits.
>
> What about for example wxProject?
>
> http://wiki.wxpython.org/index.cgi/WxProject
> or some other suggestion to take as base program.
> (could contain menus, buttons, listboxes, dialogs, ...)
>
> I would be very interested how it would looks in:
> wxPython
> pyGtk

Really one thing about pyGTK is that it has KIWI, which sits on top of
PyGtk and makes it very easy to use. Not to mention that it also has 2
GUI builders built on top of it, Glade and Gazpacho.



From fredrik at pythonware.com  Sun Sep 24 06:35:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 12:35:32 +0200
Subject: A critique of cgi.escape
In-Reply-To: <ef5lb9$h1k$2@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz>
Message-ID: <ef5n1k$qtu$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

> Attributes can be quoted with either single or double quotes. That's what
> the HTML spec says. cgi.escape doesn't correctly allow for that. Ergo,
> cgi.escape is broken. QED.

do you ever think before you post?

</F>



From mensanator at aol.com  Fri Sep 22 18:00:24 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 22 Sep 2006 15:00:24 -0700
Subject: +1 QOTW
In-Reply-To: <cuXQg.3939$IA.3333@newssvr11.news.prodigy.com>
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
	<mailman.473.1158948412.10491.python-list@python.org>
	<cuXQg.3939$IA.3333@newssvr11.news.prodigy.com>
Message-ID: <1158962424.362923.314370@b28g2000cwb.googlegroups.com>


James Stroud wrote:
> Terry Reedy wrote:
> > <olsongt at verizon.net> wrote in message
> > news:1158942909.066705.245650 at e3g2000cwe.googlegroups.com...
> >
> >>Did anyone else crack up when Larry Wall described python with the
> >>statement:
> >>
> >>Python, as the "anti-Perl," is heavily invested in maintaining Order.
> >>
> >>In the state of the onion address?
> >>
> >>http://www.perl.com/pub/a/2006/09/21/onion.html
> >
> >
> > There is also this:
> > 'But I think the basic Perl paradigm is "Whatever-oriented programming."'
>
> This reminds me of when I realized I could become more efficeint as
> stocker in a warehouse by implementing a "wherever inventory system".

Was fetching the items stocked someone else's job?

>
> James
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/



From syscjm at sumire.eng.sun.com  Wed Sep 27 13:09:05 2006
From: syscjm at sumire.eng.sun.com (Chris Mattern)
Date: Wed, 27 Sep 2006 17:09:05 -0000
Subject: Battlefield Weapon Popularity Trend (was: Computer Language
	Popularity Trend)
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
Message-ID: <12hlc1hf2amom31@corp.supernews.com>

In article <efd9g0$sn5$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:
>
>When the Samurai of medieval Japan were confronted
>with new 'battlefield language', e.g. early Shotguns,

"early Shotguns" :D.  Your mastery of the history of
firearms overwhelms me.

-- 
             Christopher Mattern

"Which one you figure tracked us?"
"The ugly one, sir."
"...Could you be more specific?"


From daniel at dittmar.net  Mon Sep  4 18:00:12 2006
From: daniel at dittmar.net (Daniel Dittmar)
Date: Tue, 05 Sep 2006 00:00:12 +0200
Subject: threading support in python
In-Reply-To: <Xns9834CA4B9668FrtwfreenetREMOVEcouk@216.196.109.145>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<edhl07$b2t$1@news.sap-ag.de>
	<Xns9834CA4B9668FrtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <4m3lveF42r10U1@uni-berlin.de>

Rob Williscroft wrote:
> Daniel Dittmar wrote in news:edhl07$b2t$1 at news.sap-ag.de in 
> comp.lang.python:
> 
> 
>>- removing reference counting and relying on garbage collection alone 
>>will break many Python applications (because they rely on files being 
>>closed at end of scope etc.)
>>
> 
> 
> They are already broken on at least 2 python implementations, so
> why worry about another one.

I guess few applications or libraries are being ported from CPython to 
Jython or IronPython as each is targeting a different standard library, 
so this isn't that much of a problem yet.

Daniel


From metaperl at gmail.com  Tue Sep 19 15:02:07 2006
From: metaperl at gmail.com (metaperl)
Date: 19 Sep 2006 12:02:07 -0700
Subject: new string method in 2.5 (partition)
In-Reply-To: <40XPg.6$1n3.149@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>
Message-ID: <1158692527.463802.285370@i42g2000cwa.googlegroups.com>

sweet thanks for the heads up.

John Salerno wrote:
> Forgive my excitement, especially if you are already aware of this, but
> this seems like the kind of feature that is easily overlooked (yet could
> be very useful):
>
>
> Both 8-bit and Unicode strings have new partition(sep) and
> rpartition(sep) methods that simplify a common use case.
> The find(S) method is often used to get an index which is then used to
> slice the string and obtain the pieces that are before and after the
> separator. partition(sep) condenses this pattern into a single method
> call that returns a 3-tuple containing the substring before the
> separator, the separator itself, and the substring after the separator.
> If the separator isn't found, the first element of the tuple is the
> entire string and the other two elements are empty. rpartition(sep) also
> returns a 3-tuple but starts searching from the end of the string; the
> "r" stands for 'reverse'.
>
> Some examples:
>
>
>  >>> ('http://www.python.org').partition('://')
> ('http', '://', 'www.python.org')
>  >>> ('file:/usr/share/doc/index.html').partition('://')
> ('file:/usr/share/doc/index.html', '', '')
>  >>> (u'Subject: a quick question').partition(':')
> (u'Subject', u':', u' a quick question')
>  >>> 'www.python.org'.rpartition('.')
> ('www.python', '.', 'org')
>  >>> 'www.python.org'.rpartition(':')
> ('', '', 'www.python.org')
>
> (Implemented by Fredrik Lundh following a suggestion by Raymond Hettinger.)



From exarkun at divmod.com  Wed Sep  6 16:46:22 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 6 Sep 2006 16:46:22 -0400
Subject: threading support in python
In-Reply-To: <7xwt8goi1e.fsf@ruckus.brouhaha.com>
Message-ID: <20060906204622.1717.657378270.divmod.quotient.41199@ohm>

On 06 Sep 2006 13:29:33 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
>> > We had that debate already (PEP 343).  Yes, there is some sloppy
>> > current practice by CPython users that relies on the GC to close the
>> > db conn.
>>
>> This point is unrelated to with or ref-counting.  Even the standard
>> library will close file objects when they are GC'd.
>
>I don't think so.  AFAIK, there is no such thing as "when they are
>GC'd" in the language spec.  There is, at best, "if they are GC'd",
>not "when".  You are not guaranteed that GC ever takes place.  At
>best, those destructors run when the application totally shuts down,
>as the process is about to exit, but I'm not sure whether the spec
>promises even that.
>

It doesn't.  Fortunately, the platform will close your files for you
when your process exits. ;)

>> If this is not acceptable, it's a major change;
>
>It is guaranteeing GC running at any particular time that would be a
>major change.  There is no such guarantee right now; there is just an
>implementation artifact in CPython that has led to careless habits
>among some users.

Actually, there is an API for instructing the GC how frequently to run,
in addition to the explicit API for causing the GC to run when you invoke
it.  See the gc module for more information.

Jean-Paul


From hg at nospam.com  Wed Sep 13 09:50:37 2006
From: hg at nospam.com (hg)
Date: Wed, 13 Sep 2006 08:50:37 -0500
Subject: socket question
In-Reply-To: <mailman.23.1158154299.10491.python-list@python.org>
References: <mailman.23.1158154299.10491.python-list@python.org>
Message-ID: <t6UNg.138374$LF4.88162@dukeread05>

Jean-Paul Calderone wrote:
> On Wed, 13 Sep 2006 08:13:43 -0500, hg <hg at nospam.com> wrote:
>> Hi,
>>
>> I am not sure whether this is a python-related question.
>>
>> If I have device A than sends XX bytes to device B, and device B does a
>> recv(XX) using the default timeout, what could make device B wake-up
>> with less than XX bytes received ?
> 
> Assuming the sends take place over a TCP connection, any number of things.
> In generally, you cannot rely on anything about the length of the string
> returned from recv(N) except that:
> 
>  it will not be greater than N
>  it will not be less than 1 unless the connection has been lost
> 
> If you expect a particular number of bytes, you need to call recv()
> multiple times and collect the returned strings until you have as many
> bytes as you wanted.
> 
> Jean-Paul
Many thanks,

hg




From fredrik at pythonware.com  Tue Sep 26 01:53:25 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 07:53:25 +0200
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159229686.723188.318340@d34g2000cwd.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>	<1159222443.540807.232040@k70g2000cwa.googlegroups.com>	<1159225120.550605.220930@d34g2000cwd.googlegroups.com>	<1159228701.795132.223800@d34g2000cwd.googlegroups.com>
	<1159229686.723188.318340@d34g2000cwd.googlegroups.com>
Message-ID: <efaf8l$gfk$2@sea.gmane.org>

altemurbugra at gmail.com wrote:

> i dont know how i can get the words from a txt file for searching by
> turn

checking the "reading and writing files" section in the tutorial might 
be somewhat helpful:

     http://docs.python.org/tut/node9.html#SECTION009200000000000000000

</F>



From aleax at mac.com  Tue Sep 12 23:12:50 2006
From: aleax at mac.com (Alex Martelli)
Date: Tue, 12 Sep 2006 20:12:50 -0700
Subject: Are Python's reserved words reserved in places they dont need	to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
	<1158104306.330476.269960@m73g2000cwd.googlegroups.com>
	<mailman.404.1158106822.5279.python-list@python.org>
Message-ID: <1hlkikk.9etrnqv38l1mN%aleax@mac.com>

Steve Holden <steve at holdenweb.com> wrote:

> Otherwise you could try and fix the error, like the PL/1 F-level 
> compiler used to. This would usually work when all that was wrong was a
> missing semicolon, but it frequently went completely berserk in other

Ah, yeah, I forgot that particularly endearing aspect of PL/I (to go
with the language having no keywords) -- many compilers bent over
backwards to double-guess what you meant, resulting in deep
misunderstandings by many programmers about what the language was
SUPPOSED to be, mysterious error messages and (worse!) program
misbehavior, etc etc -- all, of course, at the price of making the
compilers ever more intricate, bug-prone, extremely heavy in resource
cosumption, slow, and laughably bad at optimization (when compared to
compilers of the same era for sensibly SIMPLE languages, such as
Fortran).

Thanks for reviving the memories: it makes me SO ineffably glad that
nowadays I'm using a language which, among its guiding principles, has
"in the face of ambiguity, refuse the temptation to guess"!!!-)


Alex


From bolderaft at gmail.com  Sat Sep 30 12:59:01 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 30 Sep 2006 09:59:01 -0700
Subject: PyCon 2007: What talks/tutorials/panels do you want to see?
Message-ID: <1159635541.479491.147480@m73g2000cwd.googlegroups.com>

This thread is for posting ideas and general brainstorming about what
kinds
of talks folks would be interested in seeing at PyCon 2007. The idea is
to
inspire volunteer speakers to propose talks that they might not
otherwise
realize would be popular, and to give PyCon organizers a whiff of fresh
community feedback.

So, what do you want to see? What will attract you to travel to PyCon?
Or for that matter, what does your boss need to see on the schedule
to allow you to expense the conference?

The deadline for talks proposals is October 31.

http://us.pycon.org/TX2007/CallForProposals

The deadline for tutorial proposals is November 15.

http://us.pycon.org/TX2007/CallForTutorials

Remember, tutorials are half-day events on the day prior to the main
PyCon days, and have a separate admission price. The tutorial teachers
do receive some financial compensation for their time and preparation.

Also, consider the possibility of panel discussions, which would
compete for time with normal talks but might not require the same
kind of speaker preparation or proposal. Who in the Python community
would you like to see in a panel discussion or "town-hall" style event?

Btw, there is also a wiki for consolidating ideas on talks:

http://us.pycon.org/TX2007/TalkIdeas



From ryanlists at gmail.com  Wed Sep  6 23:55:47 2006
From: ryanlists at gmail.com (Ryan Krauss)
Date: Wed, 6 Sep 2006 22:55:47 -0500
Subject: iso creation for python backup script
In-Reply-To: <edo20v$38e$1@sea.gmane.org>
References: <c5b438120609061942w7f23b5f1i18b54b30de33ccd4@mail.gmail.com>
	<edo20v$38e$1@sea.gmane.org>
Message-ID: <c5b438120609062055g24e2d9fax48c40a3af4d801cf@mail.gmail.com>

Something like burn4free could work if there was a way to write an
input script for it.  I am trying to avoid manually adding different
folders to the backup each time.  I want a script that does it all for
me.

On 9/6/06, Steve Holden <steve at holdenweb.com> wrote:
> Ryan Krauss wrote:
> > I would like to write a python script to backup my wife's important
> > stuff to a CD or DVD.  She is running windows.  Is there an easy way
> > to create as iso image file using python or some other way to use
> > python to create (and burn?) a cd?  I am open to other free cd backup
> > tools that work in windows if there are any suggestions, but I want a
> > lot of flexibility about what goes into the backup (which is why I
> > would prefer to do it in python and have full control).
> >
> I'll leave others to answer the Python question, but I use Burn4Free
> (http://www.burn4free.com/) - this product wil also write ISO images
> should you choose to create them in Python.
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From bdesth.quelquechose at free.quelquepart.fr  Wed Sep 20 18:21:50 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 21 Sep 2006 00:21:50 +0200
Subject: new string method in 2.5 (partition)
In-Reply-To: <atXPg.9$1n3.69@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<atXPg.9$1n3.69@news.tufts.edu>
Message-ID: <4511bb8f$0$21664$626a54ce@news.free.fr>

John Salerno a ?crit :
> Bruno Desthuilliers wrote:
> 
>> Err... is it me being dumb, or is it a perfect use case for str.split ?
> 
> 
> Hmm, I suppose you could get nearly the same functionality as using 
> split(':', 1), but with partition you also get the separator returned as 
> well.

Well, you already know it since you use it to either split() or 
partition the string !-)

Not to say these two new methods are necessary useless - sometimes a 
small improvement to an API greatly simplifies a lot of common use cases.

>> There are IMVHO  much exciting new features in 2.5 (enhanced 
>> generators, try/except/finally, ternary operator, with: statement etc...)
> 
> 
> I definitely agree, but I figure everyone knows about those already. 
> There are also the startswith() and endswith() string methods that are 
> new 

Err... 'new' ???

> and seem neat as well.


From paul at boddie.org.uk  Wed Sep 13 04:59:27 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 13 Sep 2006 01:59:27 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
Message-ID: <1158137967.711307.11190@h48g2000cwc.googlegroups.com>

Simon Wittber wrote:
> Michael wrote:
> > Also, Paul Boddie posted a module for parallel systems a while back as well
> > which might be useful (at least for ideas):
> >    * http://cheeseshop.python.org/pypi/parallel
> >
>
> I've checked this out, it looks like a good idea which I could build
> further on.

Feel free to expand on what I've done. The tricky part was making some
kind of communications mechanism with asynchronous properties, and
although I suppose I could have used asyncore, Medusa or Twisted, I was
interested in the exercise of learning more about the poll system call
(and without adding dependencies which dwarf the pprocess module
itself).

> I've just noticed that os.fork is not available on Win32. Ouch.

Sorry! My motivation was to support operating systems that I personally
care about and which also have solutions for transparent process
migration, which I believe could be used in conjunction with the
pprocess module for better-than-thread parallelisation. In other words,
you get processes running independently on potentially many CPUs with
only the communications as overhead, and with access to shared data
either through the communications channels or via global variables
which are read only due to the nature of the fork semantics. This
doesn't necessarily play well with threaded-style programs wanting to
modify huge numbers of shared objects, but I'd argue that the benefits
of parallelisation (for performance) are somewhat reduced in such
programs anyway.

> Does that mean there is _no_ way for a single Python program to use
> multiple CPU/core systems on Windows? (other than writing an extension
> module in C (which is completely unacceptable for me!))

Rumour has it that recent versions of Windows provide fork-like
semantics through a system call. Your mission is to integrate this
transparently into the standard library's os.fork function. ;-)

Paul



From toby at tobiah.org  Wed Sep 27 12:24:40 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 09:24:40 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <efe7v1$8ls$1@news.albasani.net>
References: <mailman.746.1159307893.10491.python-list@python.org>
	<451A9824.6040106@tobiah.org> <efe7v1$8ls$1@news.albasani.net>
Message-ID: <451a98f8$0$19688$88260bb3@free.teranews.com>


>> Suppose I fill an list with 100 million random integers in the range
>> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>> of '12345' pointed to the same integer object?  Why should more be made,
>> when they all do the same thing, and are not subject to change?
> 
> Because for typical usage of integers (which doesn't include your example),
> it is more expensive to check if there's already an integer with that 
> specific
> value out there than to create a new one.
> 
> 
> Georg

I see.  I assume then, that the lookup performance hit is acceptable
as a trade off against memory usage for the quite commonly used range
of (-5, 257).  Is that the idea?

Thanks,

Tobiah

-- 
Posted via a free Usenet account from http://www.teranews.com



From ilias at lazaridis.com  Tue Sep 19 00:22:22 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 18 Sep 2006 21:22:22 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <mailman.257.1158638484.10491.python-list@python.org>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
	<1158551070.407614.40030@m7g2000cwm.googlegroups.com>
	<mailman.228.1158582176.10491.python-list@python.org>
	<1158636183.450000.121630@h48g2000cwc.googlegroups.com>
	<mailman.257.1158638484.10491.python-list@python.org>
Message-ID: <1158639742.291006.76520@i3g2000cwc.googlegroups.com>

Calvin Spealman wrote:
> On 18 Sep 2006 20:23:03 -0700, Ilias Lazaridis <ilias at lazaridis.com> wrote:
> > Steve Holden wrote:
> > > Ilias Lazaridis wrote:
> > ...
> > > > http://www-128.ibm.com/developerworks/linux/library/l-pymeta.html
> > > >
> > > > I am not so much interested in old-style, as is start production with
> > > > python 2.4 (possibly even with python 2.5).
> > >
> > > The fact remains that you won't be able to affect the built-in classes
> > > such as int and str - they are hard-coded in C (for CPython, at least),
> > > and so their metaclass is also implied and cannot be changed.
> >
> > ...except in C.
> >
> > I assume the "root class" should be available/changeable in "C", too.
> >
> > Do I have to change the sources directly, or does python provide
> > "C-level-extension/modication" mechanisms, which can be applied to
> > core-level classes, too?
> >
> > Is the Python Object Model documented anywhere in a diagram, something
> > similar to this?:
> >
> > http://case.lazaridis.com/wiki/RubyObjectModel
>
> What could you possibly want to do this for so badly that you would
> shun all alternatives and even resort to hacking up the runtime at the
> C-level to redefine core types in non-standard and unpredictable
> ways?! Seriously, please give a good reason for every doing this. I
> can't imagine there is any way it would justify all this in the face
> of just looking for an alternative. You aren't trying to use python,
> at this point, you are trying to fork it.

http://case.lazaridis.com/wiki/Please#OffTopicPosts

.



From manlio_perilloNO at SPAMlibero.it  Mon Sep 11 04:06:41 2006
From: manlio_perilloNO at SPAMlibero.it (Manlio Perillo)
Date: Mon, 11 Sep 2006 08:06:41 GMT
Subject: Problems with email.Generator.Generator
In-Reply-To: <mailman.239.1157955783.5279.python-list@python.org>
References: <mailman.239.1157955783.5279.python-list@python.org>
Message-ID: <lO8Ng.102992$_J1.824396@twister2.libero.it>

Chris Withers ha scritto:
> Hi All,
> 
> The following piece of code is giving me issues:
> 
> from email.Charset import Charset,QP
> from email.MIMEText import MIMEText
> charset = Charset('utf-8')
> charset.body_encoding = QP
> msg = MIMEText(
>     u'Some text with chars that need encoding: \xa3',
>     'plain',
>     )
> msg.set_charset(charset)
> print msg.as_string()
> 
> Under Python 2.4.2, this produces the following output, as I'd expect:
> 

> [...]
> However, under Python 2.4.3, I now get:
> 

Try with:

msg = MIMEText(
     u'Some text with chars that need encoding: \xa3',
     _charset='utf-8',
     )


and you will obtain the error:


Traceback (most recent call last):
  File "<pyshell#4>", line 3, in -toplevel-
    _charset='utf-8',
  File "C:\Python2.4\lib\email\MIMEText.py", line 28, in __init__
    self.set_payload(_text, _charset)
  File "C:\Python2.4\lib\email\Message.py", line 218, in set_payload
    self.set_charset(charset)
  File "C:\Python2.4\lib\email\Message.py", line 260, in set_charset
    self._payload = charset.body_encode(self._payload)
  File "C:\Python2.4\lib\email\Charset.py", line 366, in body_encode
    return email.base64MIME.body_encode(s)
  File "C:\Python2.4\lib\email\base64MIME.py", line 136, in encode
    enc = b2a_base64(s[i:i + max_unencoded])
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in
position 41: ordinal not in range(128)




Regards  Manlio Perillo


From horpner at yahoo.com  Tue Sep 26 09:18:59 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 26 Sep 2006 15:18:59 +0200
Subject: Ordered dicts
References: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
Message-ID: <slrnehia78.1fk.horpner@FIAD06.norwich.edu>

On 2006-09-26, bearophileHUGS at lycos.com <bearophileHUGS at lycos.com> wrote:
> I have found that in certain situations ordered dicts are
> useful. I use an Odict class written in Python by ROwen that I
> have improved and updated some for personal use.
>
> So I'm thinking about a possible C version of Odict (maybe fit
> for the collections module).

Check out http://sourceforge.net/projects/pyavl/ for a probably
useful sorted mapping type, already implemented in C as an
extension module.

However, I haven't tried it myself.

-- 
Neil Cerutti
We're going to be exciting.  Of course, it was exciting when the
Titanic went down. --Bob Weiss


From bluszcz at jabberpl.org  Fri Sep  8 18:13:37 2006
From: bluszcz at jabberpl.org (Rafal Zawadzki)
Date: Sat, 09 Sep 2006 00:13:37 +0200
Subject: urlopen() error
References: <1157752728.685285.197130@i42g2000cwa.googlegroups.com>
Message-ID: <dac2a$4501eb09$3eb3300a$29640@news.chello.pl>

Tempo wrote:

> Hello. I am getting an error and it has gotten me stuck. I think the
> best thing I can do is post my code and the error message and thank
> everybody in advanced for any help that you give this issue. Thank you.
> 
> #############
> Here's the code:
> #############
> 
> import urllib2
> import re
> import xlrd
> from BeautifulSoup import BeautifulSoup
> 
> book = xlrd.open_workbook("ige_virtualMoney.xls")
> sh = book.sheet_by_index(0)
> rx = 1
> for rx in range(sh.nrows):
>     u = sh.cell_value(rx, 0)
>     page = urllib2.urlopen(u)
>     soup = BeautifulSoup(page)
>     p = soup.findAll('span', "sale")
>     p = str(p)
>     p2 = re.findall('\$\d+\.\d\d', p)
>     for price in p2:
> print price

> ValueError: unknown url type: List
              ^^^^^^^^^^^^^^^^^^^^^^

I don't xlrd, but:
http://docs.python.org/lib/module-urllib2.html
urlopen(  url[, data])
 Open the URL url, which can be either a string or a Request object. 
data should be a string, which specifies additional data to send to the
server. In HTTP requests, which are the only ones that support data, it
should be a buffer in the format of application/x-www-form-urlencoded, for
example one returned from urllib.urlencode().

What is your _u_?
-- 
Rafa? Zawadzki [jid/mail: bluszcz at jabberpl.org, skype: blvszcz]
http://glam.pl - u?ywane ciuchy, vintage, secondhand        
        http://bluszcz.net - moja strona domowa


From andychambers2002 at yahoo.co.uk  Thu Sep 14 06:48:04 2006
From: andychambers2002 at yahoo.co.uk (andychambers2002 at yahoo.co.uk)
Date: 14 Sep 2006 03:48:04 -0700
Subject: Force sleep to ignore interrupts
Message-ID: <1158230884.705465.17010@k70g2000cwa.googlegroups.com>

I've written a simple Timer class that allows you to extend it
and then implement onMinuteChange, onHourChange etc methods
which will be executed on each new minute/hour respectively.

It works as I want when used in the main application thread.
That is, when you hit Ctr + C, it stops running.  However, if
the class that subclasses it, also subclasses Thread, it breaks
in that hitting Ctrl + C interrupts the call to sleep which puts
the event loop out of sync with real time.

How can I force the sleep to stay asleep for a whole second?  The
source code is below.


from threading import Thread
from datetime import datetime
from time import sleep

new_minute = lambda t: t.second == 0
new_hour = lambda t: t.minute == 0 and new_minute(t)
new_day = lambda t: t.hour == 0 and new_hour(t)
new_week = lambda t: t.weekday() == 0 and new_day(t)
new_month = lambda t: t.day == 0 and new_day(t)

class Timer:

    def run(self):
        t = datetime.now()
        diff = t.microsecond
        delay = 1.000000 - (0.000001 * diff)
        sleep(delay)
        self.onSecondChange()
        while True:
            sleep(1)
            t = datetime.now()
            self.onSecondChange()
            if new_minute(t): self.onMinuteChange()
            if new_hour(t): self.onHourChange()
            if new_day(t): self.onDayChange()
            if new_week(t): self.onWeekChange()
            if new_month(t): self.onMonthChange()

    def onSecondChange(self): pass
    def onMinuteChange(self): pass
    def onHourChange(self): pass
    def onDayChange(self): pass
    def onWeekChange(self): pass
    def onMonthChange(self): pass
    def onYearChange(self): pass


if __name__ == '__main__':
    class TestTimer(Timer, Thread):
        def onSecondChange(self):
            print "second elapse: %s" % datetime.now()
        def onMinuteChange(self):
            print "minute elapse : %s" % datetime.now()
        def onHourChange(self):
            print "hour elapse : %s" % datetime.now()
    t = TestTimer()
    t.start()



From felipe.lessa at gmail.com  Sun Sep 24 13:29:42 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Sun, 24 Sep 2006 14:29:42 -0300
Subject: What is the best way to "get" a web page?
In-Reply-To: <1159117755.949467.109740@k70g2000cwa.googlegroups.com>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<92nRg.4760$nX4.2074@tornado.texas.rr.com>
	<1159069783.563618.80380@k70g2000cwa.googlegroups.com>
	<1159072858.576765.9020@k70g2000cwa.googlegroups.com>
	<1159115212.945175.245670@b28g2000cwb.googlegroups.com>
	<1159117755.949467.109740@k70g2000cwa.googlegroups.com>
Message-ID: <c2701f5c0609241029r3cfff23p66b6022ba541529c@mail.gmail.com>

24 Sep 2006 10:09:16 -0700, Rainy <ak at silmarill.org>:
> Functionally they are the same, but third line included in Firefox.
> Opera View Source command produces the same result as Python.
[snip]

It's better to compare with the result of a downloader-only (instead
of a parser), like wget on Unix. That way you'll get exactly the same
bytes (assuming the page is static).

-- 
Felipe.


From theller at python.net  Mon Sep 18 09:22:28 2006
From: theller at python.net (Thomas Heller)
Date: Mon, 18 Sep 2006 15:22:28 +0200
Subject: PIL 2.5 win32 binaries?
In-Reply-To: <1158584374.572133.66340@i42g2000cwa.googlegroups.com>
References: <1158584374.572133.66340@i42g2000cwa.googlegroups.com>
Message-ID: <eem6ik$pto$1@sea.gmane.org>

GHUM schrieb:
> On the PIL website I read:
> 
> The current free version is PIL 1.1.5, which has been tested with
> Python 1.5.2 and newer, including 2.3 and 2.5.
> 
> but in downloads I cannot see any binaries for windows and Python 2.5
> 
> Are they somewhere available?
> 
> Best wishes,
> 
> Harald
> 
http://effbot.org/downloads/#PIL

Thomas



From gal.diskin at gmail.com  Tue Sep 26 10:09:49 2006
From: gal.diskin at gmail.com (Gal Diskin)
Date: 26 Sep 2006 07:09:49 -0700
Subject: ultra newbie question (don't laugh)
In-Reply-To: <TjaSg.26$1n3.125@news.tufts.edu>
References: <TjaSg.26$1n3.125@news.tufts.edu>
Message-ID: <1159279789.308978.42130@b28g2000cwb.googlegroups.com>

John Salerno wrote:
> Ok, I've decided to make a little project for myself which involves
> storing employee information in an XML file. I'm doing this partly to
> experiment with working with XML. The blocks in the file will look
> something like this:
>
> <researcher id="salerjo01">
>    <first_name>John</first_name>
>    <last_name>Salerno</last_name>
>    <birth_country>United States</birth_country>
>    <birth_state>Texas</birth_state>
>    <birth_city>Houston</birth_city>
>    #etc.......
> <researcher>
>
> I also plan to make a GUI frontend with wxPython for entering the
> records. This will be fairly easy, but not as fun as writing the logic.
> For now I've decided to focus just on writing the logic, and not worry
> about the GUI yet.
>
> So this is what I came up with so far, then I sat staring at the screen
> wondering how to proceed:
>
> class LabXMLWriter(object):
>
>      def write_name(self, first, last, given=''):
>
> Suddenly I realized I just have no idea how to start thinking about what
> I need to do. My first instinct was to use a class, as above, but then I
> wondered if that was even necessary, since all I need to do is get
> information from a user and write it to a file. Do I really need that
> information stored in an object?
>
> Then I wondered if I needed an __init__ method, and what could go in it?
> Or should I just make separate methods for each bit of information to
> write to the file (i.e., name, birth location, address, phone number,
> etc.). I thought maybe I could create the ID in the __init__ method
> (salerjo01), but to do that I need the name first. I could do this:
>
> def __init__(self, first_name, last_name, given_name=''):
>      # code to initialize name and create ID
>
> But then I wondered if this detracts from the work that the class
> methods would do later.
>
> So you see, what I'm asking for is very basic help, sort of along the
> lines of "what things do I need to consider before I even begin this?"
> Is OOP necessary here? Would utility functions work just as well for
> simply writing the information to a file?
>
> Perhaps I should just take some kind of programming intro class! I read
> all these Python books, but when it comes time to write something
> non-trivial, I get stuck almost immediately with all the possibilities.
>
> Thanks,
> John

I think this is marely a matter of programming style in your case. If
you like to use OOP use it. If not, don't. It doesn't seem to me that
OOP is necessary to anything you just mentioned. Don't let the
possibilities slow you - they're there so you can use whatever you
like, not to flood you with too many options.

Good luck,
Gal



From nemesis at nowhere.invalid  Sun Sep 17 03:42:44 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Sun, 17 Sep 2006 07:42:44 GMT
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<20060916174324.2237.20755.XPN@orion.homeinvalid>
	<q2iog21vr7sfgc2dhjb4jj5ld3nprbnbd4@4ax.com>
Message-ID: <20060917074241.2241.57001.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:

>>> Ah, great. I changed, this was not working immediatly.
>>> So I remembered, most often you have to restart the App, and so its is
>>> working.
>>Here is working fine.
> I am on windows, is there maybe a difference (?).

I don't think so, I use XPN alo on Win2000 and WinXP and this shortcut
works fine on Windows too.

[threading]
> Aha, I don't understand all the details anyway, in Forte the same
> thread was ordered in.

The References header contains the Message-id of the article as they
appear in the thread, the last message-id in the references field is the
message-id of the parent article.
In-Reply-To is similar ... but it contains only the message-id of the
parent article, it is not a standard usenet header it is used by
mail-agents.
I use only References to build threads ... maybe Agent uses also
In-Reply-To.

>>It's a focus issue, in the search dialog the focus is set on the entry.
>>The Esc key is not binded to any button by default.
> That would be convenient, pressing "Enter" to perform the awaited 
> process and cancel to abandon the dialogue.

But in the search dialog before you start the search you have to write
what you are searching ... so the software must be set on the entry.


> If you don't mind, I will make a thorough test :-)
> I don't want to bother more than necessary.
> I want to make it happen, that XPN will be my "default" Newsreader!!!
> Many thanks again for your answers and this wonderful piece of
> sofware!

Thank you for your suggestions.

-- 
A user and his leisure time are soon parted.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From fabiofz at gmail.com  Tue Sep 19 11:46:26 2006
From: fabiofz at gmail.com (Fabio Zadrozny)
Date: Tue, 19 Sep 2006 12:46:26 -0300
Subject: Pydev 1.2.3 released
Message-ID: <cfb578b20609190846l6273d87dw1fb722a0d5efd6cd@mail.gmail.com>

Hi All,

Pydev and Pydev Extensions 1.2.3 have been released

Details on Pydev Extensions: http://www.fabioz.com/pydev
Details on Pydev: http://pydev.sf.net
Details on its development: http://pydev.blogspot.com


Release Highlights in Pydev Extensions:
-----------------------------------------------------------------

* Support for python 2.5 has been added
* Some minor issues on mark occurrences when the definition for something
could not be found were fixed

Release Highlights in Pydev:
----------------------------------------------

* When the user specifies an invalid interpreter, a better error report is
given (previously it was only shown in the error log)
* When threads die, the debugger is notified about it (so that they are
removed from the stack)
* Writing the preferences to the disk is now buffered
* Fixed problem when debugging in jython with the statement "from xxx import
*"
* Fixed one issue with the indentation engine
* Commenting a line does not remove a blank line in the end anymore
* Added debug mode for unit-test
* Added the possibility of setting the -Dpython.cachedir for running the
jython shell (errors can arise in unix-based machines if jython is not able
to write its cache)

  Contributions
      o Darrell Maples:
            + Unit-test refactoring
            + Run as jython unit-test
            + Filter test methods to run

      o Joel Hedlund
            + Added a support to ease adding options to Ctrl+1 in the
scripting engine
            + Added a ctrl+1 for the case:

              def m1(self, arg=None):
                  arg |<-- Ctrl+1 shows option to do:

              def m1(self, arg=None):
                  if arg is None:
                      arg = []

  Support for python 2.5
      o Added the new relative import
      o Added the new if expression
      o Added the unified try..except..finally statement
      o Added the with x:... statement
      o Indenting after the new with statement
      o Recognizing 'with' as a keyword in syntax highlighting


What is PyDev?
---------------------------

PyDev is a plugin that enables users to use Eclipse for Python and Jython
development -- making Eclipse a first class Python IDE -- It comes with many
goodies such as code completion, syntax highlighting, syntax analysis,
refactor, debug and many others.


Cheers,

-- 
Fabio Zadrozny
------------------------------------------------------
Software Developer

ESSS - Engineering Simulation and Scientific Software
http://www.esss.com.br

Pydev Extensions
http://www.fabioz.com/pydev

Pydev - Python Development Enviroment for Eclipse
http://pydev.sf.net
http://pydev.blogspot.com
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        http://www.python.org/psf/donations.html

From robert.kern at gmail.com  Wed Sep 27 14:46:57 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 27 Sep 2006 13:46:57 -0500
Subject: ElementTree and proper identation?
In-Reply-To: <xuzSg.38$1n3.434@news.tufts.edu>
References: <iYySg.34$1n3.469@news.tufts.edu>
	<r4zSg.35$1n3.414@news.tufts.edu>	<mailman.821.1159380838.10491.python-list@python.org>	<JtzSg.37$1n3.434@news.tufts.edu>
	<xuzSg.38$1n3.434@news.tufts.edu>
Message-ID: <efegur$cdg$1@sea.gmane.org>

John Salerno wrote:
> John Salerno wrote:

>> Yeah, actually I just gave this a try but I couldn't figure out where 
>> the code needed to go or how to call the function. I tried creating an 
>> Element with a few SubElements, then I did:
>>
>> print >> filename, indent(root)
>>
>> But that only wrote the value "None" into the file.
> 
> Ok, I see that indent() returns None. In that case, how do I get the 
> formatted text that it produces?

The indent() function modifies the elements themselves to add the indentation. 
So dump the tree to a string.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From samirbenabid at linuxmail.org  Fri Sep  1 15:10:23 2006
From: samirbenabid at linuxmail.org (samir)
Date: 1 Sep 2006 12:10:23 -0700
Subject: Syntax suggestion.
In-Reply-To: <ed6hmc$ld1$1@sunnews.cern.ch>
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
Message-ID: <1157137823.018472.143300@m73g2000cwd.googlegroups.com>

Bonan tagon!

George Sakkis wrote:

> It's been done; it's called "IPython":
> http://ipython.scipy.org/doc/manual/manual.html

Thank you for the link! It's just what I've needed but...

Roberto Bonvallet wrote :

> ...so finally you get something that is exactly like any Unix shell, and
> completely different to Python.  If you want Python to look like bash, work
> like bash and have bash-like syntax, you should really consider using bash :)

I'm fedup of typing over and over parentheses around function calls
every time I call a single ligne function call or when it is inside an
"if" statement. So i thought that ommiting the parentheses and, why
not, the commas in such cases will be a sort of beautiful/easier :)

Adiaux
Samir



From jaysherby at gmail.com  Fri Sep  8 16:41:48 2006
From: jaysherby at gmail.com (Jay)
Date: 8 Sep 2006 13:41:48 -0700
Subject: best split tokens?
Message-ID: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>

Let's say, for instance, that one was programming a spell checker or
some other function where the contents of a string from a text-editor's
text box needed to be split so that the resulting array has each word
as an element.  Is there a shortcut to do this and, if not, what's the
best and most efficient token group for the split function to achieve
this?



From dawodu4fun at yahoo.com  Fri Sep  1 01:59:16 2006
From: dawodu4fun at yahoo.com (spiffy)
Date: Fri, 01 Sep 2006 05:59:16 GMT
Subject: raw audio in windows
References: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
Message-ID: <gqiff250pefqisbp3dik5fkgl4udshjbqa@4ax.com>

On 31 Aug 2006 21:34:13 -0700, "Putty" <jaysherby at gmail.com> wrote:

>Hi.  I've written a small python script that was primarily meant for
>use in a unix-compatible environment.  It writes a bunch of raw audio
>to a file and then sends the file to /dev/audio and the system plays
>the audio.  Very simple.
>
>Is there a simple way I could edit the script (which just uses the
>system call to do this) to run under windows?
>
>This is the code that would have to change:
>os.system("cat audioBuf > /dev/audio")


hey, that sounds like some stuff i've been working on...
is there any possibility that you could send me that script so I could
take a look at it and learn?
i'm new to python and programming in general. i'm working on some
algorithmic composition stuff and also trying to write some synths....
here's my email...
dawodu4fun at yahoo.com


From fredrik at pythonware.com  Tue Sep 26 09:47:37 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 15:47:37 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org><slrnehfnch.6tm.jon+usenet@snowy.squish.net><mailman.569.1159192888.10491.python-list@python.org><slrnehfomg.6tm.jon+usenet@snowy.squish.net><ef8oqr$9pt$1@news.albasani.net><slrnehfqc5.6tm.jon+usenet@snowy.squish.net><4517eecf$0$14036$edfadb0f@dread15.news.tele.dk><slrnehfsgj.6tm.jon+usenet@snowy.squish.net><ef95kk$oan$1@news.albasani.net><mailman.676.1159276577.10491.python-list@python.org>
	<slrnehiah5.9o0.jon+usenet@snowy.squish.net>
Message-ID: <efbb1p$hh0$1@sea.gmane.org>

Jon Ribbens wrote:

>> the same documentation tells people what function to use if they
>> want to quote *every-thing* that might need to be quoted, so if
>> people did actually understand everything that was written in a
>> reasonably clear way, this thread wouldn't even exist.
>
> The fact that you don't understand that that's not true is the reason
> you've been getting into such a muddle in this thread.

it's a fact that it's not true that the documentation points to the function
that it points to ?  exactly what definitions of the words "fact" and "true"
are you using here ?

</F> 





From bearophileHUGS at lycos.com  Sun Sep 24 17:25:44 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 24 Sep 2006 14:25:44 -0700
Subject: newbie IronPython compiled scripts speed question
In-Reply-To: <op.tgees50h3p2nzo@fafoi.lan>
References: <op.tgees50h3p2nzo@fafoi.lan>
Message-ID: <1159133144.923369.209640@b28g2000cwb.googlegroups.com>

dtlog:
> So the question is, should I switch to IronPython and compile
> my scripts, or learn to use something like pyinline or Psyco?

Learning to use Psyco is very easy, for a basic usage you just have to
put in your code:
import psyco
psyco.full()

For a better usage you can do:
psyco.bind(functioname)
for just the functions that you have seen can enjoy the compilation.

For a smart usage you can learn few tricks to help its job. The last
page of the psyco manual helps.

pyinline is rather easy to use if you have linux and you know C.

Bye,
bearophile



From jstroud at mbi.ucla.edu  Wed Sep 20 00:55:25 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 20 Sep 2006 04:55:25 GMT
Subject: Pythonic way to condese my array
In-Reply-To: <Zv3Qg.699$ef2.677@fed1read09>
References: <Zv3Qg.699$ef2.677@fed1read09>
Message-ID: <1R3Qg.2222$TV3.583@newssvr21.news.prodigy.com>

Dean Card wrote:
> I have a list of dictionaries where each dictionary defines, among other 
> things, a row and column number.  So, my list might look like this:
> [{'row':1, 'column':1, otherdata}, {'row':1, 'column':2, 'otherdata}...]
> 
> This data is passed to flash and used there to create a grid of objects that 
> are placed based on the row and column values.
> 
> For a given set of data I may have values column values in the range of 1, 9 
> inclusive.
> 
> What I would like to do is take my list of dictionaries (like the one listed 
> above) and shift the column numbers down to fill in missing values... 
> example (only the column key,value pair is show for simplification):
> 
> [{'column':1}, {'column':2}, {'column', 4}, {'column': 8}, {'column':2}, 
> {'column', 4}]
> 
> If this were the dataset... I would want to change all 4s to 3 and all 8s to 
> 4.  That way I end up with 1 ...  4 instead of 1, 2, 4, and 8.
> 
> Is there some slick way to do this?
> 
> Thanks
> 
> 

Not sure how slick this is, but I would do it thus:

dicts = [{'column':1}, {'column':2}, {'column': 4}, {'column': 8}, 
{'column':4}]

vals = list(set(d['column'] for d in dicts))
vals.sort()
amap = dict((b,a) for (a,b) in enumerate(vals))

for d in dicts:
   d['column'] = amap[d['column']] + 1


The "1" in the last line comes from your requirement to start numbering 
at 1 instead of 0.

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From jwaixs at gmail.com  Fri Sep  1 13:34:58 2006
From: jwaixs at gmail.com (jwaixs)
Date: 1 Sep 2006 10:34:58 -0700
Subject: disgrating a list
Message-ID: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>

Hello,

How can I disgrate (probably not a good word for it) a list? For
example:

a = [1,2]
b = 3
c = [a] + [b]     # which makes [[1,2],3]

Then how can I change c ([[1,2],3]) into [1,2,3]? I have a simple
function for this:
========================
def flatten(l):
       r = []
       s = [l]
       while len(s) > 0:
               i = s.pop()
               if i.__class__ == list:
                       for c in i:
                               s.append(c)
               else:
                       r.append(i)
       return r
========================
But this function isn't really doing it in the "python-way". Doesn't
have python an obscure function or buildin to do this?

Greetz,

Noud Aldenhoven



From tenax.raccoon at gmail.com  Thu Sep 14 12:17:29 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 14 Sep 2006 09:17:29 -0700
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
	<pan.2006.09.14.09.41.14.876360@REMOVEME.cybersource.com.au>
	<slrnegipgp.4us.apardon@rcpc42.vub.ac.be>
Message-ID: <1158250649.290744.263990@h48g2000cwc.googlegroups.com>

Antoon Pardon wrote:
> On 2006-09-14, Steven D'Aprano <steve at REMOVEME.cybersource.com.au> wrote:
> > On Wed, 13 Sep 2006 07:45:02 +0000, Antoon Pardon wrote:
> >
> >>>> This is just an idea of mine, nothing I expect python to adapt.
> >>>> But just suppose the language allowed for words in bold. A word
> >>>> in bold would be considered a reserved word, a word in non bold
> >>>> would be an identifier.
> >
> > But surely all you are doing is changing the reserved word from (say)
> > "return" to "\x0breturn". Once you do that, you can bet that people will
> > complain that they want to have identifiers in bold too, why can't they
> > create a name "\x0breturn", and somebody will come up with an even more
> > complicated scheme for accommodating them... wash, rinse, repeat.
>
> Do you really think this is a serious possibility? As far as I can see,
> that \x0b that will be prepended to differentiate keywords from
> identifiers is a technique called stropping, that has been used with
> some algol languages. Have you any knowledge of people programming algol
> who asked for the use of stropped identifiers?
>
> I think I really would be amazed to find out there were such people,
> but then I have been amazed before. So I really would like to know.

Don't restrict yourself to something like that!  Use HTML to indicate
purpose of your python programs!  So, your identifiers must be between
<b> and </b> tags.  You strings will have to sit inside of a CDATA
section to work right, and you get all sorts of entity substitutions
for free!

"My program doesn't work anymore."
"Are your function names between h3 tags?"

(Secretly repulsed, yet fascinated....)
    --Jason



From http  Wed Sep 13 07:06:50 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 04:06:50 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<7x8xkol0n9.fsf@ruckus.brouhaha.com>
	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>
	<mailman.14.1158140507.10491.python-list@python.org>
	<7xbqpk5bnc.fsf@ruckus.brouhaha.com>
	<mailman.17.1158145066.10491.python-list@python.org>
Message-ID: <7xodtkt48l.fsf@ruckus.brouhaha.com>

Robin Becker <robin at reportlab.com> writes:
> No I think they tried to just run a lot of processes at once and they
> got the 8 core by just substituting the two dual cores with two quads.

Huh?!  There are no quad core x86 cpu's as far as I know ;).

> I used occam back in the eighties with ibm pcs and these 4 transputer
> plugin cards. One of my bosses was Scottish MP and heavily into macro
> economic modelling (also an inmos supporter). I seem to remember doing
> chaotic gauss-seidel with parallel equation block solving, completely
> pointless as the politicos just ignored any apparent results. Back of
> the envelope is good enough for war and peace it seems.

Heh :).  OK, yeah, I remember Occam now, it used CSP (communicating
sequential processes) for concurrency if I remember, sort of like
Erlang?

> Is suppose Alice isn't related to the "Alice Machine" which was a
> tagged pool processor of some kind. I recall it being delivered just
> when prolog and the like were going out of fashion and it never got
> faster than a z80 on a hot day.

No I don't think so.  It's Standard ML with some concurrency extensions
and a really nice toolkit: 

   http://www.ps.uni-sb.de/alice/ 

Actually I'm not sure now whether it supports real multiprocessor
concurrency.  It looks cool anyway.


From oripel at gmail.com  Sun Sep 10 09:05:27 2006
From: oripel at gmail.com (oripel)
Date: 10 Sep 2006 06:05:27 -0700
Subject: Function metadata (like Java annotations) in Python
In-Reply-To: <1157879609.386406.278450@b28g2000cwb.googlegroups.com>
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
	<1157879609.386406.278450@b28g2000cwb.googlegroups.com>
Message-ID: <1157893527.335185.216650@e3g2000cwe.googlegroups.com>

Thanks Paddy - you're showing normal use of function attributes.
They're still hidden when wrapped by an uncooperative decorator.

Paddy wrote:
> oripel wrote:
> > Hi,
> >
> > I'm trying to attach some attributes to functions and methods, similar
> > to Java annotations and .NET attributes.
> > I also want to use a convenient decorator for it, something along the
> > lines of
> >
> > @attr(name="xander", age=10)
> > def foo():
> >   ...
> >
> > Assigning attributes to the function will work, as will assigning keys
> > and values to a dictionary in an attribute. But if there are more
> > decorators in the way, this could fail:
> >
> > @onedec
> > @attr(...)
> > @twodec
> > def foo():
> >   ...
> >
> > Given 'foo' now, how do I find the attributes?
> >
> > Assigning to a global attribute registry (some interpreter-global
> > dictionary), although less desirable, might have been acceptable, but
> > then how do I identify the function after it's been wrapped in more
> > decorators?
> >
> > Also, it may be nice to have the following work as well:
> >
> > @attr(name="Xander")
> > @attr(age=10)
> > @somedec
> > @attr(hobby="knitting")
> > def foo():
> >   ...
> >
> >
> > Any thoughts? Am I rehashing something old that my search skills didn't
> > uncover?
> >
> > Thanks!
> > Ori.
>
> I wrote up my investigation into function attributes and decorators on
> my blog:
>
> http://paddy3118.blogspot.com/2006/05/python-function-attributes.html
> http://paddy3118.blogspot.com/2006/05/function-attributes-assigned-by.html
> 
> What do you think?
> 
> - Paddy.



From MonkeeSage at gmail.com  Tue Sep 19 11:30:03 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 19 Sep 2006 08:30:03 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
Message-ID: <1158679802.962227.15200@b28g2000cwb.googlegroups.com>

Ilias Lazaridis wrote:
> How do I do this?

It's easy:

def writeDebug(msg):
  print "I do not debug things, I _evaluate_ with professionals on the
industries! See ticket 547!\n" \
        "Oh yeah, and %s" % msg
...
class Foo:
  writeDebug("how can I configure the interpreter for understand
Klingon participals and noun-phrases? Must I rectify the standard
dictionaries first?")

Regards,
Jordan



From steve at holdenweb.com  Thu Sep 28 09:54:20 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 14:54:20 +0100
Subject: windev vs python SOS
In-Reply-To: <nXzSg.195$nn3.31@nntpserver.swip.net>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <efgk4p$mad$1@sea.gmane.org>

st?phane bard wrote:
> hello, my boss ask me to prefer windev to python.
> I have to argue
> 
>   - python work on multiple platform (linux, mac, windows)
> 	A good point but it didn't interest him. Because
> 	we want to choose a language for prototyping.
> 	So multi platform is not enough.
> 
>   - python and windev are fast to develop
> 
>   - windev as a good IDE, python? boa-constructor is ok with wxpython
> 
>   - python is open source (that's not an argument for my boss, sorry 
> it's 	a boss ...)
> 
> any idea for a strong argument ?
> 
You might argue that Python allows much better integration with other 
Windows functionality: see Robinson & Hammond's "Python Programming on 
Win32", and mention IronPython.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Fri Sep 29 12:58:17 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 18:58:17 +0200
Subject: screen capture
In-Reply-To: <6568720.post@talk.nabble.com>
References: <1131981794.231399.275940@f14g2000cwb.googlegroups.com>
	<6568720.post@talk.nabble.com>
Message-ID: <efjjb8$akb$1@sea.gmane.org>

titan516 wrote:

>> I am trying to use PIL and I saw there is ImageGrab...however it only
>> works on Windows.  Is there a platform-independent ability to work
>> around this?

> Maybe you can try  http://www.acasystems.com ACA capture PRO , it , i
> think,can fix your problem well..

   "System requirements: Windows 98, Windows Me, Windows NT 4.0
   with sp6 or higher, Windows 2000, Windows XP or later version"

if the developers of that product are as clueless as the anonymous 
cowards spamming on their behalf, that product must really suck.

</F>



From tony.bedford at gmail.com  Tue Sep 19 13:17:28 2006
From: tony.bedford at gmail.com (codefire)
Date: 19 Sep 2006 10:17:28 -0700
Subject: I need some tips to begin a simple project
In-Reply-To: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>
References: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>
Message-ID: <1158686248.199342.277580@m7g2000cwm.googlegroups.com>


dutche wrote:

> Now, that I know a bit of Python, I want to make some simple project, I
> thought something like a menu, just like "kxdocks" menu or something
> like that, with transparency and all with xml. But I dont know what
> things I have to know.
>

Start with some simple non-gui apps first. How about a text based
lottery number picker program - you can add a GUI later :)

Writing GUI apps takes a bit of experience - I have done it in other
languages but not Python (yet).

There are several good GUI toolkits TK as mentioned and also wxPython
is worth looking at.

Tony



From olsongt at verizon.net  Fri Sep 22 12:35:09 2006
From: olsongt at verizon.net (olsongt at verizon.net)
Date: 22 Sep 2006 09:35:09 -0700
Subject: +1 QOTW
Message-ID: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>

Did anyone else crack up when Larry Wall described python with the
statement:

Python, as the "anti-Perl," is heavily invested in maintaining Order.

In the state of the onion address?

http://www.perl.com/pub/a/2006/09/21/onion.html



From tim.golden at viacom-outdoor.co.uk  Fri Sep 29 09:28:27 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Fri, 29 Sep 2006 14:28:27 +0100
Subject: windev vs python SOS
In-Reply-To: <451d1cf1$0$27390$ba4acef3@news.orange.fr>
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B4CE@vogbs009.gb.vo.local>

[M?ta-MCI - translated for non-Francophones]

| Re-Bonjour !

Hello again!

| J'avais ?crit, dans le message pr?c?dent, que la soci?t? 
| PC-Soft avait eu des difficult?s financi?res, 
| il y a plusieurs ann?es.

I wrote in the last message that PC-Soft had had financial
difficulties a few years ago.

| Comme je n'ai pas eu l'occasion de v?rifier cette 
| information, (et ? la demande de la soci?t? PC-Soft), 
| je demande donc aux lecteurs de consid?rer 
| cette information comme nulle.

As I have not had the opportunity to verify this
information (and at the request of PC-Soft),
I ask that reads consider this information null and void

| Concentrez-vous sur le reste du message.

Focus on the rest of the message.

| @-salutations
| 
| Michel Claveau

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From srikrishnamohan at gmail.com  Tue Sep  5 11:09:18 2006
From: srikrishnamohan at gmail.com (km)
Date: Tue, 5 Sep 2006 20:39:18 +0530
Subject: threading support in python
In-Reply-To: <7xejuqhh94.fsf@ruckus.brouhaha.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<7xejuqhh94.fsf@ruckus.brouhaha.com>
Message-ID: <f4cc03640609050809r1d8f07bbg8c6e5784afe8049f@mail.gmail.com>

Hi all,

> And yet, Java programmers manage to write threaded applications all
> day long without getting bitten (once they're used to the issues),
> despite usually being less skilled than Python programmers ;-).
> These days, even semi-entry-level consumer laptop computers have dual
> core CPU's, and quad Opteron boxes (8-way multiprocessing using X2
> processors) are quite affordable for midrange servers or engineering
> workstations, and there's endless desire to write fancy server apps
> completely in Python.  There is no point paying for all that
> multiprocessor hardware if your programming language won't let you use
> it.  So, Python must punt the GIL if it doesn't want to keep
> presenting undue obstacles to writing serious apps on modern hardware.

True
GIL implementation must have got its own good causes as it it designed
but as language evolves its very essential that one increases the
scope such that it fits into many usage areas(eg. scientific
applications using multiprocessors etc.).

In the modern scientific age  where
__multiprocessor_execution_environment__ is quite common, i feel there
is a need to rethink abt the introduction of true parallelization
capabilities in python.
I know many of my friends who didnot choose python for obvious reasons
of the nature of thread execution in the presence of GIL which means
that one is  wasting sophisticated hardware resources.


##########################################
if __name__ == ''__multiprocessor_execution_environment__':
    for python_version in  range(python2.4.x, python3.x, x):

        if python_version.GIL:

            print 'unusable for computation intensive multiprocessor
architecture'

        else:
            print cmp(python,java)
############################################

regards,
KM


From http  Thu Sep 28 06:29:49 2006
From: http (Paul Rubin)
Date: 28 Sep 2006 03:29:49 -0700
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<1159370280.794129.104190@i3g2000cwc.googlegroups.com>
	<slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>
	<efg109$4vr$1@news.albasani.net>
	<slrnehn6e8.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <7xac4k1dya.fsf@ruckus.brouhaha.com>

Antoon Pardon <apardon at forel.vub.ac.be> writes:
> It is something worth investigating, but I'm not sure it
> will suite my purpose. You see I have a table module,
> a table is like a list except the base index doesn't need
> to be 0. So I could have a table that is indexable from
> sys.maxint - 3 to sys.maxint + 7. I'm not sure tbl[:Top]
> would do what it is supposed to do in those circumstances.

Top = object()

class Table(list):
   def __getitem__(self, n):
       get = super(Table, self).__getitem__
       if n is Top:
          return get(-1)
       return get(n - self.baseindex)

a=Table(range(9))
a.baseindex = 3

>>> print a[5], a[Top]
2 8



From robert.kern at gmail.com  Sat Sep  2 03:27:29 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 02 Sep 2006 02:27:29 -0500
Subject: Linear regression in 3 dimensions
In-Reply-To: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
References: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
Message-ID: <edbbp1$jgc$1@sea.gmane.org>

wirecom at wirelessmeasurement.com wrote:
> Hi all,
> 
> I am seeking a module that will do the equivalent of linear regression in
> 3D to yield a best fit a plane through a set of points (X1, Y1, Z1), (X1,
> Y1, Z1),... (Xn, Yn, Zn).
> 
> The resulting equation to be of the form:
> 
>  Z = aX + bY + c
> 
> The function I need would take the set of points and return a,c & c Any
> pointers to existing code / modules would be very helpful.

Well, that's a very unspecified problem. You haven't defined "best."

But if we make the assumption that you want to minimize the squared error in Z, 
that is minimize

   Sum((Z[i] - (a*X[i] + b*Y[i] + c)) ** 2)

then this is a standard linear algebra problem.

In [1]: import numpy as np

In [2]: a = 1.0

In [3]: b = 2.0

In [4]: c = 3.0

In [5]: rs = np.random.RandomState(1234567890)  # Specify a seed for repeatability

In [6]: x = rs.uniform(size=100)

In [7]: y = rs.uniform(size=100)

In [8]: e = rs.standard_normal(size=100)

In [9]: z = a*x + b*y + c + e

In [10]: A = np.column_stack([x, y, np.ones_like(x)])

In [11]: np.linalg.lstsq?
Type:           function
Base Class:     <type 'function'>
String Form:    <function lstsq at 0x6df070>
Namespace:      Interactive
File: 
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/numpy-1.0b2.dev3002-py2.4-macosx-10.4-ppc.egg/numpy/linalg/linalg.py
Definition:     np.linalg.lstsq(a, b, rcond=1e-10)
Docstring:
     returns x,resids,rank,s
     where x minimizes 2-norm(|b - Ax|)
           resids is the sum square residuals
           rank is the rank of A
           s is the rank of the singular values of A in descending order

     If b is a matrix then x is also a matrix with corresponding columns.
     If the rank of A is less than the number of columns of A or greater than
     the number of rows, then residuals will be returned as an empty array
     otherwise resids = sum((b-dot(A,x)**2).
     Singular values less than s[0]*rcond are treated as zero.


In [12]: abc, residuals, rank, s = np.linalg.lstsq(A, z)

In [13]: abc
Out[13]: array([ 0.93104714,  1.96780364,  3.15185125])

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From steve at holdenweb.com  Thu Sep  7 06:36:10 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 11:36:10 +0100
Subject: getting quick arp request
In-Reply-To: <edorvq$nv2$1@south.jnrs.ja.net>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>	<1157565629.691753.115910@e3g2000cwe.googlegroups.com><1157618579.686511.274150@b28g2000cwb.googlegroups.com>	<mailman.114.1157623864.5279.python-list@python.org>
	<edorvq$nv2$1@south.jnrs.ja.net>
Message-ID: <edoslm$h76$1@sea.gmane.org>

Richard Brodie wrote:
> "Steve Holden" <steve at holdenweb.com> wrote in message 
> news:mailman.114.1157623864.5279.python-list at python.org...
> 
> 
>>Is it relevant to point out that the ARP protocol is a connectionless network-layer 
>>protocol.
> 
> 
> Not really, since the program uses normal TCP socket connections.
> The feature is working exactly as designed - to slow down TCP scans.
> The arp requests are just a consequence of the TCP scan. 
> 
> 
Ah. Right. Now you mention that (and force me to read the code :-) I see 
it's a horizontal scan of the FTP service port, and the subject line is 
really a misnomer. Thanks.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ghidox at gmail.com  Tue Sep 26 10:09:31 2006
From: ghidox at gmail.com (Ghido)
Date: 26 Sep 2006 07:09:31 -0700
Subject: import db data into openoffice
Message-ID: <1159279771.606437.323870@i3g2000cwc.googlegroups.com>

Hi all i need to create a script for import a data from a database into
a openoffice.org file with pyuno. Can someone help me with some link
about this argument or with some examples?
thank you very much

Ghido



From sjmachin at lexicon.net  Thu Sep 21 18:47:02 2006
From: sjmachin at lexicon.net (John Machin)
Date: 21 Sep 2006 15:47:02 -0700
Subject: Printing UTF-8
References: <1158871670.714900.186500@m7g2000cwm.googlegroups.com>
Message-ID: <1158878822.405055.45340@i42g2000cwa.googlegroups.com>

sheldon.regular at gmail.com wrote:
> I am new to unicode so please bear with my stupidity.
>
> I am doing the following in a Python IDE called Wing with Python 23.
>
> >>> s = "???"

>From later evidence, this string is encoded as utf-8. Looks like Wing
must be using an implicit "# coding: utf-8" for interactive input ...

> >>> print s
> ??????

... but uses some other encoding for output. Try doing this, and see
what you get:
   import sys
   print sys.stdout.encoding

> >>> print s
> ??????
> >>> s
> '\xc3\xa4\xc3\xb6\xc3\xbc'

Yup, looks like utf-8 ...

> >>> s.decode('utf-8')
> u'\xe4\xf6\xfc'

Yup, decodes from utf-8 without error

> >>> u = s.decode('utf-8')
> >>> u
> u'\xe4\xf6\xfc'

and those Unicode characters actually look like what you started with:

| >>> import unicodedata as ucd
| >>> [ucd.name(x) for x in u'\xe4\xf6\xfc']
| ['LATIN SMALL LETTER A WITH DIAERESIS', 'LATIN SMALL LETTER O WITH
DIAERESIS',
| LATIN SMALL LETTER U WITH DIAERESIS']
| >>>

So, 3 yups, it must be utf-8.


> >>> print u.encode('utf-8')
> ??????
> >>> print u.encode('latin1')
> ???
>
> Why can't I get ??? printed from utf-8 and I can from latin1?

Because str objects are just strings of anonymous bytes. They don't
have an attribute that says what encoding their creator had in mind.
Consequently output channels like stdout have an encoding which is
applied to all output. On Windows, in a GUI, this encoding depends on
your locale, and in your case is probably cp1252. cp1252 is very
similar to latin1 but has extra symbols in it. Try repeating the above
exercise, but this time include a trademark symbol in your s string,
and add
    print u.encode("cp1252")
at the end of the exercise.

>  How
> can I use utf-8 exclusivly and be able to print the characters?

print exclusiveutf8.decode('utf-8').encode(whateverittakes)

Why do you want to use utf-8 exclusively? Use it for what?

Basic principle when working with non-ASCII data: decode 8-bit input
into Unicode; process using Unicode-aware software (in Python's case,
the built-in unicode type); if 8-bit output is required, encode your
Unicode data with whatever encoding is required.

>
> I also did the same thing an the same machine in a command window...
> ActivePython 2.3.2 Build 230 (ActiveState Corp.) based on
> Python 2.3.2 (#49, Oct 24 2003, 13:37:57) [MSC v.1200 32 bit (Intel)]
> on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> s = "???"
> >>> print s
> ???
> >>> s
> '\x84\x94\x81'
> >>> s.decode('utf-8')
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> UnicodeDecodeError: 'utf8' codec can't decode byte 0x84 in position 0:
> unexpected code byte
> >>> u = s.decode('utf-8')
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> UnicodeDecodeError: 'utf8' codec can't decode byte 0x84 in position 0:
> unexpected code byte
> >>>
>
> Why such a difference from the IDE to the command window in what it can
> do

Because the command window is the child of MS-DOS, which was the child
of CP/M, and maintains the ancient traditions (like ctrl-Z being taken
as EOF, for example).

> and the internal representation of the unicode?

Unicode? There's no Unicode involved here. In each case you are sending
a string of bytes (0 <= ordinal <= 255) to an output device, each to be
rendered as a bitmap on the screen. Wing evidently causes the renderer
to reach for the latin1 or cp1252 table; the command window is probably
(in your case) using cp850 (or something similar).

On my box, in a command window:
| >>> sys.stdout.encoding
| 'cp850'
| >>> '\x84\x94\x81'.decode('cp850')
| u'\xe4\xf6\xfc'
... which is what you had before.

HTH,
John



From 2006 at jmunch.dk  Sun Sep 24 10:30:53 2006
From: 2006 at jmunch.dk (Anders J. Munch)
Date: Sun, 24 Sep 2006 16:30:53 +0200
Subject: QuoteSQL
In-Reply-To: <mailman.511.1159054988.10491.python-list@python.org>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<451541db$0$4171$ba624c82@nntp02.dk.telia.net>
	<mailman.511.1159054988.10491.python-list@python.org>
Message-ID: <451696eb$0$4169$ba624c82@nntp02.dk.telia.net>

Robert Kern wrote:
> Anders J. Munch wrote:
> 
>> Always sad to see an SQL DBMS willfully violate the SQL standard.
> 
> You must be a constantly depressed person, then.  :-)

Nah, I just look the other way most of the time *g*

- Anders


From glenn at tangelosoftware.net  Fri Sep 29 21:03:05 2006
From: glenn at tangelosoftware.net (glenn)
Date: 29 Sep 2006 18:03:05 -0700
Subject: analyzing removable media
In-Reply-To: <bD4Tg.2757$Y24.1240@newsread4.news.pas.earthlink.net>
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
	<1159510609.968438.111540@e3g2000cwe.googlegroups.com>
	<1159511003.768019.145680@e3g2000cwe.googlegroups.com>
	<bD4Tg.2757$Y24.1240@newsread4.news.pas.earthlink.net>
Message-ID: <1159578185.212626.38420@k70g2000cwa.googlegroups.com>


>
> 	As soon as you ask for "cross platform" and something that is
> device/OS specific... you have conflict.
>
> From the win32 extensions:
>
> win32file.GetDriveType
> int = GetDriveType()
>
> Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk,
> or network drive.
>
> Return Value
> The result is one of the DRIVE_* constants.
>
> 	I suspect Linux would require checking parameters in the fstab file.
Thanks for the tip Dennis



From pavlovevidence at gmail.com  Mon Sep  4 16:29:22 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 4 Sep 2006 13:29:22 -0700
Subject: What are super()'s semantics?
In-Reply-To: <mailman.10331.1157371523.27775.python-list@python.org>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
	<1157370520.155278.214110@b28g2000cwb.googlegroups.com>
	<mailman.10331.1157371523.27775.python-list@python.org>
Message-ID: <1157401761.952353.272090@i3g2000cwc.googlegroups.com>


Maric Michaud wrote:
> Le lundi 04 septembre 2006 13:48, Carl Banks a ?crit :
> > Essentially, it's objects that have MROs, not classes.
> Wrong, __mro__ is an attribute of types (subtypes of type) but like __class__
> it is not available in the instances.
> mro() is standard a method of type.

I agree that was misleading; I should have said something like, "Type
of an object never changes, therefore the MRO used for an object is
fixed."

BTW, __class__ is available to instances.  (Were you thinking of
__bases__?)


Carl Banks



From fredrik at pythonware.com  Tue Sep 12 15:48:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 21:48:33 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158089301.155482.151530@i42g2000cwa.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>	<mailman.384.1158087083.5279.python-list@python.org>
	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>
Message-ID: <ee72uh$jca$1@sea.gmane.org>

mensanator at aol.com wrote:

>> that's just the old "C++/Java is better than Smalltalk/Python/Ruby"
>> crap.  we've seen it before, and it's no more true when it comes from
>> you than when it comes from some Java head.  people who've actually used
>> dynamic typing knows that it doesn't mean that all objects have random
>> types all the time.
> 
> No, it isn't the same old crap. When I define an Access field as
> Double, I cannot insert a value such as ">200" or "ND" or "Yes".
> I'm not saying static typing is better, just that migrating a dynamic
> types to static types may cause difficulties that wouldn't be present
> if it was static to static.

dynamic typing != random typing.  if your program is using the DB-API to 
add data to an SQLite database, who, exactly, is inserting the values? 
who's producing the data?  under what circumstances would that code 
produce or insert arbitrarily typed data?

</F>



From btveenstra at wanadoo.nl  Mon Sep 18 15:14:56 2006
From: btveenstra at wanadoo.nl (Bauke Veenstra)
Date: Mon, 18 Sep 2006 21:14:56 +0200
Subject: PIL PSDraw textsize method
Message-ID: <pan.2006.09.18.19.14.54.954519@wanadoo.nl>

Running the example from the excellent PIL handbook gives an error,
after these two lines:
ps.setfont("HelveticaNarrow-Bold", 36)
w, h, b = ps.textsize(title)
AttributeError: PSDraw instance has no attribute 'textsize'

Can someone tell me what's wrong, this error occurred on my Linux and on
my Windows system.

Regards,
Bauke


From gnewsg at gmail.com  Mon Sep 25 08:02:01 2006
From: gnewsg at gmail.com (billie)
Date: 25 Sep 2006 05:02:01 -0700
Subject: How to run in background?
Message-ID: <1159185721.476762.222830@b28g2000cwb.googlegroups.com>

Hi all. I know that it's possible to automatically run a Python program
in background by giving it the "pyw" extension.
This is useful when I release a source ditribution of my program.
How could it be possible to do the same thing with an .exe file
compiled with py2exe extension? Do I have to write a batch script
separately?

Thanks in advance



From paddy3118 at netscape.net  Thu Sep  7 16:28:59 2006
From: paddy3118 at netscape.net (Paddy)
Date: 7 Sep 2006 13:28:59 -0700
Subject: Positive lookahead assertion
In-Reply-To: <45006ede$0$19734$88260bb3@free.teranews.com>
References: <45006ede$0$19734$88260bb3@free.teranews.com>
Message-ID: <1157660939.252322.135820@e3g2000cwe.googlegroups.com>


tobiah wrote:
> (?=...)
> Positive lookahead assertion. This succeeds if the contained
> regular expression, represented here by ..., successfully
> matches at the current location, and fails otherwise.
> But, once the contained expression has been tried, the
> matching engine doesn't advance at all; the rest of the
> pattern is tried right where the assertion started.
>
> I am unable to wrap my mind around this sentence.  Could
> someone give me an example of how this works, and why
> it would be useful?
>
> Thanks,
>
> Toby
>
> --
> Posted via a free Usenet account from http://www.teranews.com
Its all about context. If you want to match something but only if it
precedes something else, then you follow the regular expression for
'something' by the regular expression for 'something else' where
`something else` is enclosed by (?=...)

The regular expression engine will surreptitiously check that
'something else' does indeed follow, before returning any match of
'something'.

Unfortunatley the above may be just as hard to decipher as the original
;-)

- Paddy.



From tony.bedford at gmail.com  Mon Sep 25 13:25:01 2006
From: tony.bedford at gmail.com (codefire)
Date: 25 Sep 2006 10:25:01 -0700
Subject: I need some help with a regexp please
In-Reply-To: <1158881568.914183.112660@i3g2000cwc.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
Message-ID: <1159205101.539477.109910@m7g2000cwm.googlegroups.com>

Yes, I didn't make it clear in my original post - the purpose of the
code was to learn something about regexps (I only started coding Python
last week). In terms of learning "a little more" the example was
successful. However, creating a full email validator is way beyond me -
the rules are far too complex!! :)



From python.list at tim.thechases.com  Tue Sep  5 12:05:09 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 05 Sep 2006 11:05:09 -0500
Subject: are there any lib for receive hotmail ?
In-Reply-To: <4m5kf4F4hppiU1@uni-berlin.de>
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>	<ONXKg.8550$o42.6314@tornado.texas.rr.com>	<1157467698.407373.273750@d34g2000cwd.googlegroups.com>
	<4m5kf4F4hppiU1@uni-berlin.de>
Message-ID: <44FDA035.3030203@tim.thechases.com>

> And receiving hotmail (or any outher webmail) using scraping
> techniques is a daunting task, to say the least - you should
> forget about that IMHO.

There's a perl project called "gotmail" that will do the scraping 
to dump in a local mailbox file (I don't remember whether it's MH 
or mbox format).  You can snag it at

http://gotmail.sf.net

Thus, there's evidence that Hotmail can be scraped, but it seems 
they have a never-ending battle against Hotmail, trying to keep 
up with changes.

I don't know of any Python projects doing the same sort of thing. 
  It might not be too hard to port the Perl project over to 
Python, but one would be an extra level removed from scraping 
Hotmail, playing catchup not only with Hotmail, but then porting 
the latest fixes from Gotmail.

There are a couple other Hotmail-to-mbox scrapers I've heard of, 
but haven't tried.

-tkc






From franz.steinhaeusler at gmx.at  Wed Sep 27 07:19:50 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Wed, 27 Sep 2006 13:19:50 +0200
Subject: One program in different GUI Toolkits
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
	<cf9kh2dft7s8g6akqchlqd24pjisr51ji1@4ax.com>
	<1159353736.964304.41940@m7g2000cwm.googlegroups.com>
Message-ID: <qgnkh2h0h22ukslrtkscbnrjcr1gnle2l5@4ax.com>

On 27 Sep 2006 03:42:17 -0700, "Paul Boddie" <paul at boddie.org.uk> wrote:

>Franz Steinhaeusler wrote:
>>
>> What about a small text editor using the scintilla control?
>> It should be available for Pythoncard, wxPython, pygtk and pyQt
>> (qtscintilla).
>> With a small find dialog, open, save should be enough for the beginning.
>
>You might be interested in this page:
>
>http://wiki.python.org/moin/GuiProgrammingShootout
>
>Other people have suggested similar projects before, and you might be
>able to get the ball rolling with the above suggestion.
>
>Paul

Thank you for your information!


From http  Fri Sep 29 18:59:40 2006
From: http (Paul Rubin)
Date: 29 Sep 2006 15:59:40 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
Message-ID: <7xr6xus2hv.fsf@ruckus.brouhaha.com>

Matthew Woodcraft <mattheww at chiark.greenend.org.uk> writes:
> How do you transform this?
> 
> height = 0
> for block in stack:
>     if block.is_marked():
>         print "Lowest marked block is at height", height
>         break
>     height += block.height
> else:
>     raise SomeError("No marked block")

Untested:

    all_heights = [block.height for block in stack if block.is_marked()]
    if all_heights:
      height = sum(all_heights)
    else:
      raise SomeError("No marked block")

Alternatively (lower memory usage for large list):

    all_heights = (block.height for block in stack if block.is_marked())
    try:
      height = all_heights.next()
      height += sum(all_heights)
    except StopIteration:
      raise SomeError("No marked block")


From http  Wed Sep  6 16:23:43 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 13:23:43 -0700
Subject: string search and modification
References: <209uf25ufjhf817ngsbuompvrggl7tf2ln@4ax.com>
Message-ID: <7x1wqopwvk.fsf@ruckus.brouhaha.com>

Jim Britain <nomail2me at charter.net> writes:
> I would like to match [123.123.123.123] (including the qualifying
> brackets), but be able to simply return the contents, without the
> brackets.


 >>> p=r'\[((\d{1,3}\.){3}\d{1,3})\]'
 >>> m = 'dsl-kk-dynamic-013.38.22.125.touchtelindia.net [125.22.38.13] (may be'
 >>> g=re.search(p,m)
 >>> g.group(1)
'125.22.38.13'

g.group(1) matches the stuff in the first set of parens, which excludes
the square brackets.


From gagsl-py at yahoo.com.ar  Tue Sep 26 20:14:07 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 21:14:07 -0300
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159297203.610395.173710@i3g2000cwc.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926205613.04a83408@yahoo.com.ar>

At Tuesday 26/9/2006 16:00, p.lavarre at ieee.org wrote:

> > >Q: The C idea of (pv != NULL) is said most directly in Python ctypes
> > >how?
> >
> > Perhaps reading the ctypes tutorial? (both in the 2.5 docs and in
> > <http://starship.python.net/crew/theller/ctypes/tutorial.html>)
>
>Actually, no.  I see three answers or zero, depending on how you like
>to count.
>
>Yes that flat edition helps makes this clear, thank you - there I can
>more easily grab an ordered list of all matches of text than in the
>more prominent shadow:
>http://docs.python.org/dev/lib/module-ctypes.html
>
>I see direct discussion only of how to construct null pointers, no
>discussion of how to test for them.  Specifically:
>
>The hint { bool(null_ptr) == False } could be read to mean try ==
>False, in the "Pointers" text.

It says:

NULL pointers have a False boolean value:
 >>> null_ptr = POINTER(c_int)()
 >>> print bool(null_ptr)
False

That means that NULL pointers are considered False in a boolean 
expression (and you could assume that non-NULL pointers are True, as 
any other object in general), so you can test a NULL pointer with a 
simple "if ptr: whatever"

--- cut ---
from ctypes import *
null_ptr = POINTER(c_int)()
x=c_int(1234)
other_ptr = pointer(x)

if null_ptr: print "null_ptr is not NULL"
else: print "null_ptr is NULL"

if other_ptr: print "other_ptr is not NULL"
else: print "other_ptr is NULL"
--- cut ---

It's really the same as bool([])==False, bool(any_non_empty_list)==True:

L = [1,2,3]
while L:
   print L.pop()

You don't say:
while bool(L)==True:

(do you?)



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From sjdevnull at yahoo.com  Sun Sep 17 02:39:33 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 16 Sep 2006 23:39:33 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <1158473910.095783.280630@e3g2000cwe.googlegroups.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
	<1158431981.048450.27810@i42g2000cwa.googlegroups.com>
	<1158473910.095783.280630@e3g2000cwe.googlegroups.com>
Message-ID: <1158475173.771073.153210@i3g2000cwc.googlegroups.com>

Frank Millman wrote:
> Did you read my extract from the PostgreSQL docs -
>
> "Notice that because this is returning a session-local value, it gives
> a predictable answer whether or not other sessions have executed
> nextval since the current session did."
>

I totally missed it, my bad.  Thanks!

> For some reason Google Groups stuck a '>' at the beginning, so you may
> have thought that it related to a previous message

Probably due to the vagaries of mbox format which uses "From " at the
beginning of a line to indicate the start of a new message; lots of
mail systems prepend "From " at the start of a line in the body with
">".  :-/



From DustanGroups at gmail.com  Sat Sep 23 19:25:36 2006
From: DustanGroups at gmail.com (Dustan)
Date: 23 Sep 2006 16:25:36 -0700
Subject: webbrowser module's Firefox support
In-Reply-To: <1159052232.734611.211860@m7g2000cwm.googlegroups.com>
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
Message-ID: <1159053936.813103.38840@d34g2000cwd.googlegroups.com>


MonkeeSage wrote:
> Dustan wrote:
> > I did do a search here, but came up empty-handed. Can anyone tell me
> > how to get the webbrowser module to recognize firefox's existence,
> > given this information?
>
> Looks like it is checking %PATH% for firefox.exe. Try:
>
> >>> import os
> >>> os.environ["PATH"] = r"C:\Program Files\Mozilla Firefox;"
> >>> import webbrowser
> >>> webbrowser._browsers
>
> Regards,
> Jordan

Thanks! But I'm still getting an error message:

>>> import webbrowser
>>> webbrowser._browsers
{'windows-default': [<class 'webbrowser.WindowsDefault'>, None],
'firefox': [None, <webbrowser.BackgroundBrowser object at 0x00BAC8D0>]}
>>> cont=webbrowser._browsers['firefox'][1]
>>> cont
<webbrowser.BackgroundBrowser object at 0x00BAC8D0>
>>> cont.open("http://www.google.com")

Traceback (most recent call last):
  File "<pyshell#10>", line 1, in <module>
    cont.open("http://www.google.com")
  File "C:\Python25\lib\webbrowser.py", line 185, in open
    p = subprocess.Popen(cmdline, close_fds=True, preexec_fn=setsid)
  File "C:\Python25\lib\subprocess.py", line 551, in __init__
    raise ValueError("close_fds is not supported on Windows "
ValueError: close_fds is not supported on Windows platforms

Looking in the docs on subprocess.Popopen
(http://docs.python.org/lib/node529.html), it says "If close_fds is
true, all file descriptors except 0, 1 and 2 will be closed before the
child process is executed. (Unix only)". I have to be frank; I have no
idea what this means. What should I do to fix this?



From marc.wyburn at googlemail.com  Fri Sep  8 07:29:25 2006
From: marc.wyburn at googlemail.com (marc.wyburn at googlemail.com)
Date: 8 Sep 2006 04:29:25 -0700
Subject: ctypes listing dll functions
Message-ID: <1157714965.454577.269150@i3g2000cwc.googlegroups.com>

hi all and before I start I apologise if I have this completely muddled
up but here goes.

I'm trying to call functions from a dll file in a python script but I
can't work out what functions are available. I'm using ctypes.  I've
tried using dir(ctypes_object) but the resultant output looks like a
list of standard functions and not the ones I'm looking for.

Also how can I tell if the dll was written in C or C++ as I understand
C++ dlls can't be used.

I have a header file that starts;

#ifndef __DIRAC__
#define __DIRAC__


    // Prototypes

    const char *DiracVersion(void);
    void *DiracCreate(long lambda, long quality, long numChannels,
float sampleRate, long (*readFromChannelsCallback)(float **data, long
numFrames, void *userData));
    void *DiracCreate(long lambda, long quality, long numChannels,
float sampleRate, long (*readFromChannelsCallback)(float *data, long
numFrames, void *userData));
    long DiracSetProperty(long selector, long double value, void
*dirac);
    long double DiracGetProperty(long selector, void *dirac);
    void DiracReset(bool clear, void *dirac);
    long DiracProcess(float **audioOut, long numFrames, void *userData,
void *dirac);
    long DiracProcess(float *audioOut, long numFrames, void *userData,
void *dirac);
    void DiracDestroy(void *dirac);
    long DiracGetInputBufferSizeInFrames(void *dirac);

I would have thought that DiracCreate, DiracSetProperty etc were all
callable functions.  As you may have guessed I'm don't do much work in
C...

Thanks, MW.



From wleppanen at gmail.com  Mon Sep  4 04:22:11 2006
From: wleppanen at gmail.com (Vesa Leppanen)
Date: Mon, 4 Sep 2006 11:22:11 +0300
Subject: Reading config.ini in PythonWin.
Message-ID: <287ae6370609040122p7b53d858xef5d8c015b1a7bf9@mail.gmail.com>

Hi,

I am new in python-list and quite new in Python programming as well. I
am working mainly with GIS and using Esri's geoprocessing tools.

I want to use .ini file to set the parameters, especially paths, in my
project. PythonWin 2.1. is my version.

Why do I get the default back in the case below? Any way around?

The Paths,Temp is c:/temp.

>>> win32ui.SetProfileFileName('D:\\config.ini')
>>> Temp = win32ui.GetProfileVal('Paths','Temp','c:/')
>>> print Temp
c:/
>>>
-- 

I saw one old thread but didn't se any solution there.

W.


From JohnRoth1 at jhrothjr.com  Sat Sep 30 09:05:25 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 30 Sep 2006 06:05:25 -0700
Subject: builtin regular expressions?
In-Reply-To: <451e37a5$1@news.vo.lu>
References: <451e37a5$1@news.vo.lu>
Message-ID: <1159621525.394304.13890@m73g2000cwd.googlegroups.com>


Antoine De Groote wrote:
> Hello,
>
> Can anybody tell me the reason(s) why regular expressions are not built
> into Python like it is the case with Ruby and I believe Perl? Like for
> example in the following Ruby code
>
> line = 'some string'
>
> case line
>    when /title=(.*)/
>      puts "Title is #$1"
>    when /track=(.*)/
>      puts "Track is #$1"
>    when /artist=(.*)/
>      puts "Artist is #$1"
> end
>
> I'm sure there are good reasons, but I just don't see them.

Partially it's a matter of language design
philosophy, and partially it's a matter of
the early history of the language.

Guido tends toward a very clean, almost mathematical
minimalist approach: things should be put into the core
language that duplicate other things. Larry Wall tends
toward what I think of as a "kitchen sink" approach.
Put it in!

The other is early history. Python started out as the
scripting language for an operating system research
project at a university. Perl started out as a language
for doing text manipulation in a working systems
administration environment.

There's a different issue that, I think, illustrates
this very nicely: text substitution. Python uses
the "%" operator for text substitution. I suspect
that Guido doesn't like it very much, because it
has recently grown a second library for text
substitution, and there's a PEP  for 3.0 for yet
a third library. And guess what? Neither of them
uses an operator.

> Python Culture says: 'Explicit is better than implicit'. May it be
> related to this?

It's more "there should  be one, and preferably
only one, obvious way to do something."

John Roth
> 
> Regards,
> antoine



From johnjsal at NOSPAMgmail.com  Wed Sep 27 14:41:54 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 18:41:54 GMT
Subject: sqlite3 error
In-Reply-To: <mailman.828.1159382395.10491.python-list@python.org>
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<mailman.828.1159382395.10491.python-list@python.org>
Message-ID: <SBzSg.40$1n3.256@news.tufts.edu>

Tim Chase wrote:

> My guess would be the extra comma on the nameGiven line...most SQL 
> engines I've used would choke on that
> 
> -      nameGiven varchar(255) DEFAULT NULL,
> +      nameGiven varchar(255) DEFAULT NULL


You're right! I think that must have been leftover from when it wasn't 
the last line in the query. Thanks!


From f.braennstroem at gmx.de  Sat Sep 16 03:20:59 2006
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Sat, 16 Sep 2006 09:20:59 +0200
Subject: latex openoffice converter
References: <eec71v$ts2$1@sea.gmane.org>
Message-ID: <eeg8ko$q6v$1@sea.gmane.org>

Hi to both,

thanks! I'll try them ...

* Fabian Braennstroem <f.braennstroem at gmx.de> wrote:
> Hi,
>
> I would like to use python to convert 'simple' latex
> documents into openoffice format. Maybe, anybody has done
> something similar before and can give me a starting point!?
> Would be nice to hear some hints!
>
> Greetings!
>  Fabian
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>

Greetings!
 Fabian



From grflanagan at yahoo.co.uk  Mon Sep 11 12:06:55 2006
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: 11 Sep 2006 09:06:55 -0700
Subject: Problems with email.Generator.Generator
In-Reply-To: <mailman.260.1157989076.5279.python-list@python.org>
References: <mailman.239.1157955783.5279.python-list@python.org>
	<ee3odb$ck9$00$1@news.t-online.com>
	<mailman.260.1157989076.5279.python-list@python.org>
Message-ID: <1157990815.926342.232400@q16g2000cwq.googlegroups.com>


Chris Withers wrote:
>
> Now, I want to know what I'm supposed to do when I have unicode source
> and want it to end up as either a text/plain or text/html mime part.
>
> Is there a how-to for this anywhere? The email package's docs are short
> on examples involving charsets, unicode and the like :-(

no expert in this, but have you tried the codecs module?

    http://docs.python.org/lib/codec-objects.html

( with 'xmlcharrefreplace' for the html )?

Gerard



From jjl at pobox.com  Wed Sep 27 15:54:28 2006
From: jjl at pobox.com (John J. Lee)
Date: 27 Sep 2006 20:54:28 +0100
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <u8xk513wr.fsf@pobox.com>

Roy Smith <roy at panix.com> writes:

> I'm working on a product which for a long time has had a Perl binding for 
> our remote access API.  A while ago, I wrote a Python binding on my own, 
> chatted it up a bit internally, and recently had a (large) customer enquire 
> about getting access to it.
> 
> I asked for permission to distribute the Python binding, and after a few 
> weeks of winding its way through the corporate bureaucracy I got an email 
> from a product manager who wants to meet with me to "understand the market 
> demand for Python API before we commercialize it".
> 
> Can anybody suggest some good material I can give to him which will help 
> explain what Python is and why it's a good thing, in a way that a 
> marketing/product management person will understand?

What market is your company in?

Try to find examples of Python used in similar contexts (this
newsgroup is not a bad place to do that, of course, but you haven't
told us what the market is).



John



From toby at tobiah.org  Wed Sep 27 11:26:28 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 08:26:28 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <mailman.746.1159307893.10491.python-list@python.org>
References: <mailman.746.1159307893.10491.python-list@python.org>
Message-ID: <451A9824.6040106@tobiah.org>

wesley chun wrote:
>> "Terry Reedy" <tjr... at udel.edu> wrote:
>> > as a side note, the ints that are cached (for current versions of
>> > Python) are in range(-1, 100)... is this documented somewhere?
>> Not true for at least 2.4 and 2.5.  The cached range has expanded
> 
> oops, apologies to all... it really *is* subject to change. ;-) it's
> now range(-5, 257).
> 
> -wesley

I don't pretend to understand the reasons for all of this,
but if it is possible to use the same integer object whenever
it is referenced, then why should there be a limit on range?

Suppose I fill an list with 100 million random integers in the range
of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
of '12345' pointed to the same integer object?  Why should more be made,
when they all do the same thing, and are not subject to change?

Thanks,

Tobiah

-- 
Posted via a free Usenet account from http://www.teranews.com



From matt at tplus1.com  Tue Sep 12 09:10:46 2006
From: matt at tplus1.com (Matthew Wilson)
Date: Tue, 12 Sep 2006 13:10:46 GMT
Subject: I wish I could add docstrings to vars.
Message-ID: <slrnegdcem.epp.matt@mwilson.umlcoop.net>


I build a lot of elaborate dictionaries in my interpreter, and then I
forget exactly how they work.  It would be really nice to be able to add
notes to the dictionary.

Is there some way to do this now?

Matt


-- 
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles


From antroy at gmail.com  Tue Sep 19 04:11:14 2006
From: antroy at gmail.com (Ant)
Date: 19 Sep 2006 01:11:14 -0700
Subject: How to efficiently proceed addition and subtraction in python
	list?
In-Reply-To: <mailman.245.1158619745.10491.python-list@python.org>
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
	<mailman.245.1158619745.10491.python-list@python.org>
Message-ID: <1158653474.356424.319980@d34g2000cwd.googlegroups.com>


Tim Chase wrote:
> > I have a list AAA = [1, 2, 3] and would like to subtract one from list
> > AAA
> > so AAA' = [0, 1, 2]
> >
> > What should I do?
>
>
> Sounds like a list comprehension to me:

Also the built in function 'map' would work:

>>> a = [1,2,3]
>>> b = map(lambda x: x-1, a)
>>> b
[0, 1, 2]

List comprehensions are more pythonic, but map would probably be faster
if performance was a (real) issue.



From ms at cerenity.org  Tue Sep 12 16:53:34 2006
From: ms at cerenity.org (Michael)
Date: Tue, 12 Sep 2006 21:53:34 +0100
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
Message-ID: <45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>

Simon Wittber wrote:

> I've just bought a new notebook, which has a dual core CPU.
> 
> I write cross platform games in Python, and I'd really like to be able
> to use this second core (on my machine, and on user's machines) for any
> new games I might write.
> 
> I know threads won't help (in CPython at least) so I'm investigating
> other types of concurrency which I might be able to use. I really like
> the PyLinda approach, however I need to be able to pass around all the
> simple python types, which PyLinda won't help me with. Also, PyLinda is
> more focused on distributing computing; I really only want to have 2
> processes cooperating (or 4, if I had 4 CPUs/cores etc).
> 
> Is there any cross platform way to share python objects across
> processes? (I've found POSH, but it's old, and doesn't appear to be
> maintained). I could implement my own object space using shared memory,
> but from what I can see, this is not available on Win32.
> 
> Are there any other concurrency options I've not discovered yet?

We *haven't* implemented process based components for Kamaelia yet, however
if a process component base class (which is something we want to do) was
created that might serve as a possiblity. If you're interested in this I
could chat with you about the ideas we've had about how this would work
(#kamaelia on freenode or here). (We are planning on doing this when we
manage to get sufficient round tuits).

It's probably worth noting that we wouldn't be thinking of using shared
objects, but piping data between the two processes - with the various
options including pickling to memory mapped files (however there's security
issues there aside from anything else...).

Also, Paul Boddie posted a module for parallel systems a while back as well
which might be useful (at least for ideas):
   * http://cheeseshop.python.org/pypi/parallel

I'd be interested in helping out BTW :)


Michael.
--
http://kamaelia.sourceforge.net/Home
http://yeoldeclue.com/blog



From __peter__ at web.de  Thu Sep 14 04:27:11 2006
From: __peter__ at web.de (Peter Otten)
Date: Thu, 14 Sep 2006 10:27:11 +0200
Subject: time-based point system
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
	<1158205582.339882.23000@i3g2000cwc.googlegroups.com>
	<HM6dnUgt9fG0TJXYnZ2dnUVZ_uydnZ2d@speakeasy.net>
	<1158206615.529997.195940@i42g2000cwa.googlegroups.com>
Message-ID: <eeb3ml$hvn$03$1@news.t-online.com>

Jay wrote:

> That function is absolutely no good for this situation.
> 
> 1. Take a small number.
> 5.4348809719085693
> 
> 2. Put it in the function.
> f(5.4348809719085693) = 1/5.4348809719085693
> 
> 3. Get a large number???
> 0.18399666987533483
> 
> That number is even smaller.??I?want?a?large?one?coming?out.

Not satisfied with with the shrink-wrapped functions available at your local
math-mart? Make your own from only a few data points:

from __future__ import division
import bisect

def make_function(*points):
    """Finest built-to-order maths since Archimedes"""
    points = sorted(points)
    xvalues = [p[0] for p in points]

    def f(x):
        i = bisect.bisect(xvalues, x)
        if i == 0:
            i = 1
        if i >= len(xvalues):
            i = len(xvalues) - 1
        x0, y0 = points[i-1]
        x1, y1 = points[i]
        return (y1-y0)/(x1-x0)*(x-x0) + y0
    return f

if __name__ == "__main__":
    f = make_function((0, 100000), (1, 100), (2, 10), (3, 1))
    for i in range(-1, 21):
        x = i / 10
        print x, "-->", f(x)

Peter



From efrat_regev at yahoo.com  Wed Sep 27 20:07:33 2006
From: efrat_regev at yahoo.com (efrat)
Date: Thu, 28 Sep 2006 03:07:33 +0300
Subject: Questions on Using Python to Teach Data Structures and Algorithms
Message-ID: <451b2c0b@news.bezeqint.net>

   Hello,

   I'm planning to use Python in order to teach a DSA (data structures 
and algorithms) course in an academic institute. If you could help out 
with the following questions, I'd sure appreciate it:
1. What exactly is a Python list? If one writes a[n], then is the 
complexity Theta(n)? If this is O(1), then why was the name "list" 
chosen? If this is indeed Theta(n), then what alternative should be 
used? (array does not seem suited for teaching purposes.)
2. Suppose I have some file example.py, and I'd like to incorporate it 
**into** part of an HTML page with nice syntax highlighting and all the 
shebang. Is there an easy way to do so?
(Sorry, but any Google query involving "Python" and "HTML" (with any 
other additional terms) led to Python HTML processing libraries.)
3. Are there any useful links for Python/DSA education? I found "Data 
Structures and Algorithms with Object Oriented Design Patterns" 
(http://www.brpreiss.com/books/opus7/html/book.html). It is a fine book, 
but it is unsuitable: my students are electrical-engineers, and barely 
know how to program; teaching them DSA, python, **and** stuff like the 
visitor pattern seems impossible.

   Python is such a cool language - I'm really hoping the students will 
enjoy it as much as I do. Once again, many thanks for helping out with this.

   Thanks,

   Efrat


From manstey at csu.edu.au  Wed Sep 20 23:59:26 2006
From: manstey at csu.edu.au (manstey)
Date: 20 Sep 2006 20:59:26 -0700
Subject: naming objects from string
Message-ID: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>

Hi,

If I have a string, how can I give that string name to a python object,
such as a tuple.

e.g.

a = 'hello'
b=(1234)

and then a function
name(b) = a

which would mean:
hello=(1234)

is this possible?



From steve at holdenweb.com  Sun Sep 17 22:14:48 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 17 Sep 2006 22:14:48 -0400
Subject: Outbound port on sockets
In-Reply-To: <7umPg.1719$TV3.349@newssvr21.news.prodigy.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>	<4mt1ajF7gs0hU1@uni-berlin.de>	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>	<4mv51sF7t5lmU1@uni-berlin.de>	<12glesm56ghquc4@corp.supernews.com>	<mailman.136.1158334482.10491.python-list@python.org>	<12gljhfc4f81p97@corp.supernews.com>	<mailman.142.1158342806.10491.python-list@python.org>
	<7umPg.1719$TV3.349@newssvr21.news.prodigy.com>
Message-ID: <eekvda$c4i$1@sea.gmane.org>

Bryan Olson wrote:
> Steve Holden wrote:
> 
>>Grant Edwards wrote:
>>
>>>>Well, one of ftpd implementations I have here (C code from RTEMS) does
>>>>this:
>>>>
>>>>     /* anchor socket to avoid multi-homing problems */
>>>>     data_source = info->ctrl_addr;
>>>>     data_source.sin_port = htons(20); /* ftp-data port */
>>>>     if(bind(s, (struct sockaddr *)&data_source, sizeof( [...]
>>>>     if(connect(s, [...]
> 
> 
> [...]
> 
>>I suspect that the reason for the comment is simply that the connection 
>>out from the server is being bound to the same interface (*IP address*) 
>>that the inbound request arrived on. That way it's less likely that the 
>>data stream will be routed differently from the control (port 21) stream.
> 
> 
> That still doesn't explain why they pass 20 as the port number.
> To specify an IP address, but let the system choose an arbitrary
> open port, use:
> 
>      bind((specific_IP, 0))
> 
> 
As I mentioned if the posting you made a partial quote from, the 
original specification of port-mode FTP has the server making a data 
connection from its port 20 to the client port identified by the 
client's PORT command.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From orsenthil at gmail.com  Thu Sep  7 05:18:44 2006
From: orsenthil at gmail.com (Phoe6)
Date: 7 Sep 2006 02:18:44 -0700
Subject: Accessing Add/Remove Programs Details
Message-ID: <1157620724.626754.104590@i3g2000cwc.googlegroups.com>

Hi all,

I have to uninstall an application and  I don't find the uninstaller,
the option available to me is to access Add/Remove Programs, select the
application and remove from there.

I am trying to automate this task using Python:
1) Get the Application Name
2) Access the Add/Remove Program details and check if the application
is present.
3) If present, then uninstall it.

I want to understand the Python Win32 modules/calls that would helpful
to me in this direction. Are there any?  I don't want to do it as GUI
automation using dogtail, as I want to maintain a homogeneous execution
environment of only CLI.

Please share your ideas as how I can go about with accessing Add/Remove
(appwiz.cpl) details in windows using python + python win 32
extensions.

Thanks.
Senthil



From ernesto.adorio at gmail.com  Sun Sep 17 13:01:42 2006
From: ernesto.adorio at gmail.com (ernesto.adorio at gmail.com)
Date: 17 Sep 2006 10:01:42 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <mailman.207.1158509454.10491.python-list@python.org>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
	<1158507849.378435.47080@d34g2000cwd.googlegroups.com>
	<mailman.207.1158509454.10491.python-list@python.org>
Message-ID: <1158512502.216902.274740@b28g2000cwb.googlegroups.com>

Somehow all of the above discussions did not mention having examples or
demos  "built-in"  for the language itself:

    majorfunction.example()
    demo("package")  or package.demo()
    search engine in local html documentation
    apropos()

The statistical software R is bettter in this respect if you really
wanted such kind of help.

-Ernie Adorio



From p.lavarre at ieee.org  Wed Sep 27 12:35:51 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 27 Sep 2006 09:35:51 -0700
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159297203.610395.173710@i3g2000cwc.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>
Message-ID: <1159374951.630923.268210@i3g2000cwc.googlegroups.com>

> > http://starship.python.net/crew/theller/ctypes/tutorial.html
> ...
> direct discussion only of how to construct null pointers,
> no discussion of how to test for them ...
> ...
> could be read to mean try ... == ... is ... False ... None ...

CTypes nulls fetched from a struct feel more like None than do CTypes
nulls fetched from elsewhere, astonishing me the Python newbie, e.g.:

$ python nulls.py
True True True None None
True True True None None
True False False None c_char_p(None)
$
$ cat nulls.py
from ctypes import *
class struct_aa(Structure):
    _fields_ = [("chars", c_char_p)]
pv = None
print not pv, pv == None, pv is None, cast(pv, c_void_p).value, pv
pv = struct_aa().chars
print not pv, pv == None, pv is None, cast(pv, c_void_p).value, pv
pv = cast(c_void_p(0), c_char_p)
print not pv, pv == None, pv is None, cast(pv, c_void_p).value, pv
$

Possibly relevant, though grabbed at random, is:

/// PEP 8 -- Style Guide for Python Code
/// http://www.python.org/dev/peps/pep-0008/

... beware of writing "if x" when you really mean "if x is not None" --
e.g. when testing whether a variable or argument that defaults to None
was set to some other value.  The other value might have a type (such
as a container) that could be false in a boolean context!

///



From george.sakkis at gmail.com  Tue Sep  5 19:03:00 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 5 Sep 2006 16:03:00 -0700
Subject: Better way to replace/remove characters in a list of strings.
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
	<edh04n$o0g$1@news.lrz-muenchen.de>
	<1157367752.806830.317400@m79g2000cwm.googlegroups.com>
	<1157374314.068280.302480@e3g2000cwe.googlegroups.com>
	<44fcb9ca$0$31422$626a54ce@news.free.fr>
	<1157487843.814540.205910@i42g2000cwa.googlegroups.com>
Message-ID: <1157497380.382483.127700@i3g2000cwc.googlegroups.com>

Chris Brat wrote:

> Hi
>
> Wouldn't this only cause problems with large lists - for once off
> scripts with small lists it doesn't seem like a big issue to me.
>
> Regards,
> Chris
>
> Bruno Desthuilliers wrote:
> > Chris Brat a ?crit :
> > > Thanks, thats exactly what I was looking for - very neat.
> > >
> > Just note that both solutions rebind the name to a newly constructed
> > list instead of modifying the original list in place. This is usually
> > the RightThing(tm), but sometimes one wants an in-place modification.


The extra memory to allocate the new list is usually a minor issue; the
important one is correctness, if the original list is referenced by
more than one names. Check the following almost identical-looking
cases:
1)
>>> x = ["abbbb","123a","nnnnas"]
>>> y = x
>>> x = [s.replace('a', 'b') for s in x]   # rebind to new list
>>> y is x
False

2)
>>> x = ["abbbb","123a","nnnnas"]
>>> y = x
>>> x[:] = [s.replace('a', 'b') for s in x]  # in place modification
>>> y is x
True

Neither case is always "the correct"; correctness depends on the
problem at hand, so you should know the difference and decide between
rebinding and mutation accordingly.

George



From arutz at mimoza.pantel.net  Sat Sep  2 19:25:30 2006
From: arutz at mimoza.pantel.net (Antal Rutz)
Date: Sun, 03 Sep 2006 01:25:30 +0200
Subject: Managing database tables through web-forms (automatically)
In-Reply-To: <slrnefbvfr.60s.sybrenUSE@schuimige.stuvel.eu>
References: <mailman.10134.1156969994.27775.python-list@python.org>
	<slrnefbvfr.60s.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <44FA12EA.7040307@mimoza.pantel.net>

Sybren Stuvel wrote:
> Check out Django, it has a great database API and on the fly
> auto-generated admin.

Just gone over the tutorial, really amazing, exactly what I need.
Big thanks for the hint!

-- 


--arutz


From cfriedl at bigpond.net.au  Wed Sep  6 09:38:01 2006
From: cfriedl at bigpond.net.au (Chris)
Date: Wed, 06 Sep 2006 13:38:01 GMT
Subject: [ANN] IronPython 1.0 released today!
In-Reply-To: <mailman.38.1157488049.5279.python-list@python.org>
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <ZaALg.24347$rP1.3082@news-server.bigpond.net.au>

Jim Hugunin wrote:
> I'm extremely happy to announce that we have released IronPython 1.0 today!
>  http://www.codeplex.com/IronPython

<snip>

I'm no code guru but it sounds interesting. So can I import numpy, 
scipy, matplotlib, wxpython etc like I do now with CPython and expect, 
short of a few tweaks, that my code will work? At work we seem to be 
doing more and more with dotNet and perhaps this is a way of bringing my 
tools into the same environment.

In any event, what you've done sounds cool.

Chris


From horpner at yahoo.com  Thu Sep 21 13:33:58 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 21 Sep 2006 19:33:58 +0200
Subject: I need some help with a regexp please
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
Message-ID: <slrneh5j9n.1lo.horpner@FIAD06.norwich.edu>

On 2006-09-21, codefire <tony.bedford at gmail.com> wrote:
> I am trying to get a regexp to validate email addresses but
> can't get it quite right. The problem is I can't quite find the
> regexp to deal with ignoring the case james..kirk at fred.com,
> which is not valid. Here's my attempt, neither of my regexps
> work quite how I want:

I suggest a websearch for email address validators instead of
writing of your own.

Here's a hit that looks useful:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66439

-- 
Neil Cerutti
Next Sunday Mrs. Vinson will be soloist for the morning service.
The pastor will then speak on "It's a Terrible Experience."
--Church Bulletin Blooper 


From fakeaddress at nowhere.org  Wed Sep  6 12:08:23 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 06 Sep 2006 16:08:23 GMT
Subject: threading support in python
In-Reply-To: <1157476298.716537.109330@h48g2000cwc.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
	<hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
	<1157476298.716537.109330@h48g2000cwc.googlegroups.com>
Message-ID: <XnCLg.15853$%j7.6985@newssvr29.news.prodigy.net>

sjdevnull at yahoo.com wrote:
> Bryan Olson wrote:
>> I think it's even worse. The standard Python library offers
>> shared memory, but not cross-process locks.
> 
> File locks are supported by the standard library (at least on Unix,
> I've not tried on Windows).  They work cross-process and are a normal
> method of interprocess locking even in C code.

Ah, O.K. Like Paul, I was unaware how Unix file worked with
mmap.


-- 
--Bryan



From martin at v.loewis.de  Fri Sep 22 00:39:05 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 22 Sep 2006 06:39:05 +0200
Subject: Building things with setup.py
In-Reply-To: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
Message-ID: <451368E9.10901@v.loewis.de>

James Stroud schrieb:
> This is annoying. I am trying to build scipy right now but every .so
> file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl -shared"
> to the ld flags.

That shouldn't be necessary. Linking without this should work just fine.

That way, since you made libpython2.5.a a static library, you link an
entire Python interpreter into each and every extension module. This
should not be done.

What happens if you omit these flags?

Regards,
Martin


From peonleon at gmail.com  Thu Sep  7 05:39:20 2006
From: peonleon at gmail.com (Leon)
Date: 7 Sep 2006 02:39:20 -0700
Subject: Freetype 2 Bindings
Message-ID: <1157621960.657527.249190@b28g2000cwb.googlegroups.com>

Hi,

Has anybody experimented with this python binding for Freetype2
(http://www.satzbau-gmbh.de/staff/abel/ft2/index.html) ? I'm hoping to
learn more about using text in pyOpenGl by creating textures from
glyphs generated by Freetype2. I downloaded and installed the bindings,
and with the download came an example (render.py) which renders a
string to an image, when I run the example without modifying the code,
only the first character of a string I feed it appears in the image and
blank spaces are present for the rest of the characters (you'll see
what I mean if you run render.py). I'm pretty sure it's the part of the
code in the example that defines the kerning, but I'm new to Freetype2,
and I tried following the documentation and changing the code, but I
can't pinpoint the exact problem. If you have experience programming
with Freetype2 and can figure out this out, please help, I'll be
forever grateful.

Thanks,
Leon



From onurb at xiludom.gro  Fri Sep  8 04:15:46 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 08 Sep 2006 10:15:46 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <1157701901.506736.45610@p79g2000cwp.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
Message-ID: <450126b3$0$22554$626a54ce@news.free.fr>

bearophileHUGS at lycos.com wrote:
> Frank Millman, just a short note, more expert people can give you
> better answers. There aren't abstract classes in Python.

Well... There's no "abstract" modifier at least - but there still are
abstract classes, ie not meant to be directly instanciated. You
mentioned NotImplementedError, which is indeed the usual way to make
something "abstract" in Python.



-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From stefan.behnel-n05pAM at web.de  Thu Sep 14 16:29:18 2006
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Thu, 14 Sep 2006 22:29:18 +0200
Subject: lxml Windows binaries
In-Reply-To: <mailman.73.1158224324.10491.python-list@python.org>
References: <mailman.73.1158224324.10491.python-list@python.org>
Message-ID: <4509bb9e$0$5150$9b4e6d93@newsspool1.arcor-online.net>

Jan Dries wrote:
> I'm trying to find Windows binaries for lxml. The cheeseshop is supposed
> to have such binaries, but I can't find them.
> Does anyone know where I might find such binaries?

http://cheeseshop.python.org/pypi/lxml

Sometimes takes a day longer, but our helpful egg contributors are pretty
reliable.

BTW, there's also a mailing list for lxml, it's always a good idea to discuss
lxml related stuff there.

Stefan


From steve at holdenweb.com  Tue Sep  5 12:33:16 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 17:33:16 +0100
Subject: threading support in python
In-Reply-To: <17661.37027.891231.814161@montanaro.dyndns.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>	<mailman.7.1157438963.5279.python-list@python.org>	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
	<17661.37027.891231.814161@montanaro.dyndns.org>
Message-ID: <edk8r7$qp$1@sea.gmane.org>

skip at pobox.com wrote:
>     Sandra> However, I don't expect that the GIL can be safely removed from
>     Sandra> CPython.
> 
> It was removed at one point in the dim, dark past (circa Python 1.4) on an
> experimental basis.  Aside from the huge amount of work, it resulted in
> significantly lower performance for single-threaded apps (that is, the
> common case).  Maybe more effort should have been put in at that time to
> improve performance, but that didn't happen.  Much more water has gone under
> the bridge at this point, so extracting the GIL from the core would be
> correspondingly more difficult.
> 
Given the effort that GIL-removal would take, I'm beginning to wonder if 
PyPy doesn't offer a better way forward than CPython, in terms of 
execution speed improvements returned per developer-hour.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bearophileHUGS at lycos.com  Wed Sep 20 12:13:03 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 20 Sep 2006 09:13:03 -0700
Subject: Is it possible to change a picture resolution with Python?
In-Reply-To: <1158768080.415936.41750@i3g2000cwc.googlegroups.com>
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
	<1158768080.415936.41750@i3g2000cwc.googlegroups.com>
Message-ID: <1158768783.363320.247640@d34g2000cwd.googlegroups.com>

Lad:
> But the above code increases size only , but not DPI resolutions(
> vertical nad horizontal).I need  a higher  vertical and horisontal
> resolutions.
> Any idea how to do that?

Do you need to overwrite the DPI tag contained in the header of a
Jpeg/PNG image?
Then you can probably find some library to modify such jpeg/png tags.
(I think Photoshop is able to do it.)

Bye,
bearophile



From http  Wed Sep 27 16:03:00 2006
From: http (Paul Rubin)
Date: 27 Sep 2006 13:03:00 -0700
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
	<roy-055E4F.20055226092006@reader2.panix.com>
	<1159337418.630332.80100@k70g2000cwa.googlegroups.com>
Message-ID: <7xven92i2z.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > > * C
> > > * A static functional language (ML, Haskell, etc)
> > > * Lisp or scheme Scheme
> > > * A static class-oriented language (Java, C++, etc)
> > > * A dynamic OO language (Python, ruby, smalltalk, etc)
> > >
> > > and at least a brief look at, say, Forth and Prolog.
> >
> > Interesting list.  Of those, I've done tons of C, just enough lisp to get
> > the feel of it, lots of C++, and of course Python.  I've never done any
> > functional stuff.
> 
> You should.  It's very enlightening.

Very interesting post and list.  I think I'd add at least one assembly
language.  I hate to say it but I think I'd remove Python.  As much as
Python has helped me get useful and practical things done, from a
learning point of it, as much as the developers deny it, I'd say it's
basically an OO Lisp dialect with syntax sugar.  I found it completely
natural and pleasant to program in almost immediately, because I'd
already been using Lisp and Java.  I haven't used Smalltalk or Ruby so
can't comment.  

I wonder why you chose ML over Haskell in a few other posts.  Haskell
seems more mind-expanding (as someone put it) to me because of its
pervasive lazy evaluation.  The "streams" examples in SICP, and the
numerical computation examples in Hughes' famous paper "Why Functional
Programming Matters" (google for it) show how powerful this can be.
I've been wanting to rewrite Hughes' examples using Python generators,
just for fun.

Finally, the Haridi/van Roy Mozart/Oz book has come up on clpy
numerous times, so should certainly be mentioned in a thread like this:

  http://www.info.ucl.ac.be/~pvr/book.html


From deets at nospam.web.de  Sun Sep 17 13:58:53 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 17 Sep 2006 19:58:53 +0200
Subject: Python blogging software
In-Reply-To: <7xzmcyzgbu.fsf@ruckus.brouhaha.com>
References: <1158132558.3622.29.camel@devilbox>
	<mailman.7.1158132885.10491.python-list@python.org>
	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>
	<mailman.50.1158182707.10491.python-list@python.org>
	<1158183929.155925.6050@m73g2000cwd.googlegroups.com>
	<mailman.194.1158464227.10491.python-list@python.org>
	<7xpsdvup0b.fsf@ruckus.brouhaha.com>
	<mailman.204.1158504522.10491.python-list@python.org>
	<7xzmcyzgbu.fsf@ruckus.brouhaha.com>
Message-ID: <4n5gmuF8b2ofU1@uni-berlin.de>

> Fair enough.  I shouldn't have said "lousy performance of the
> framework itself" when I should have included the application.  If the
> application's page computations are so lengthy, then they too need
> speeding up.  
> 
> We've got a situation where some big sites (Slashdot, Wikipedia) have
> a lot of cached static pages for non-logged-in users (they all see the
> same thing), but any user who is logged in sees a version customized
> by their preferences, that's usually not cached.  So there's a
> perverse incentive to not log in, since you see the static page
> faster.
> 
> I'd really like to get hold of a big active blog or BBS server to
> profile it.  It's been puzzling me for years what makes them so slow.
> They just paste user-contributed content together with HTML from
> templates, so you'd think it shouldn't be too complicated.


Most of the time, that means fetching data from the DB, which means 
context switches and network transfer. I'm a developer on a large 
java-driven application that deals with books. The app benefits hugely 
from caching - the whole object model is rather elaborated, and fetching 
it into memory (including images stored as blobs), and serializing it 
takes a couple of seconds. Per user! But just grabbing it from a disk as 
html snippet speeds up the app tremendously.

Additionally, commercial sites often are composed by a rather large 
number of different parts. Teasers, lists of e.g. thematically related 
content and so on. And if you have lots of comparably large objects that 
are very diverse, a larger number of users may mean to exhaust memory 
quickly or even worse swap it around. All this is remedied by caching.

Diez


From steven.bethard at gmail.com  Thu Sep  7 09:33:22 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 07 Sep 2006 07:33:22 -0600
Subject: change property after inheritance
In-Reply-To: <NcLLg.27806$CL6.8934@trnddc06>
References: <V_ALg.10274$YZ3.7565@trnddc03>
	<mailman.82.1157557490.5279.python-list@python.org>
	<NcLLg.27806$CL6.8934@trnddc06>
Message-ID: <6YSdneDAk40_gp3YnZ2dnUVZ_qqdnZ2d@comcast.com>

David Isaac wrote:
> Le mercredi 06 septembre 2006 16:33,  Alan Isaac a ?crit :
>>> Suppose a class has properties and I want to change the
>>> setter in a derived class. If the base class is mine, I can do this:
>>> http://www.kylev.com/2004/10/13/fun-with-python-properties/
>>> Should I? (I.e., is that a good solution?)
> 
> "Maric Michaud" <maric at aristote.info> wrote in message
> news:mailman.82.1157557490.5279.python-list at python.org...
>> Why not ? This ontroduce the notion of public getter a la C++/Java while
> the
>> property is overloadable by itself (as below), but it's correct design
> IMHO.
> 
> More support for lambda, it seems...

Well, lambda's not going away[1], but there's no *need* for lambda here. 
  It could be written as::

     class Base(object):
         def __init__(self):
             self.foo = None

         def getFoo(self):
             return self.__foo

         def setFoo(self, val):
             self.__foo = val

         def _prop_get_foo(self):
             return self.getFoo()

         def _prop_set_foo(self, val):
             return self.setFoo(val)

         foo = property(fget=_prop_get_foo, fset=_prop_set_foo)

[1] http://www.python.org/dev/peps/pep-3099/

STeVe


From nogradi at gmail.com  Sat Sep  2 10:34:32 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 2 Sep 2006 16:34:32 +0200
Subject: Libraries in python
In-Reply-To: <1157176049.124197.249310@h48g2000cwc.googlegroups.com>
References: <1157176049.124197.249310@h48g2000cwc.googlegroups.com>
Message-ID: <5f56302b0609020734h4309e95fra4b9b99865ee8b54@mail.gmail.com>

> Hy people, I'm new in python and comming from JAVA.
>
> Something I really like in java is the easy way to add a library to the
> project. Just put the jar file in the folder ( WEB-INF/lib ) and
> doesn't need to restart the server ( tomcat ).
>
> Can I do some like using python - I'm using apache mod_python?

Not sure what you are after. If you configured apache to invoke
mod_python on a location basis (given directory and subdirectories of
that for example) then you can certainly drop any python module there
and use it from any other python code from that directory without
restarting apache.


From franz.steinhaeusler at gmx.at  Sun Sep 17 15:59:06 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Sun, 17 Sep 2006 21:59:06 +0200 (CEST)
Subject: Webbrowser written totally in Python
References: <eek5bg$lm2$1@newsreader2.utanet.at>
	<1158522283.001453.112660@d34g2000cwd.googlegroups.com>
Message-ID: <eek9e9$22c$1@newsreader2.utanet.at>

faulkner wrote:
[source]

Hi faulkner,

thank you very much, I should have known! ;)

It is a beginning after all.

> #################
> there are also python bindings for gtkmozembed in gnome-python-extras
> and here:
> http://sourceforge.net/projects/pygtkmoz
>

I will take a look.


From onceuponapriori at gmail.com  Thu Sep 21 13:58:00 2006
From: onceuponapriori at gmail.com (onceuponapriori at gmail.com)
Date: 21 Sep 2006 10:58:00 -0700
Subject: Retrieve HTML from site using cookies
Message-ID: <1158861480.320611.76850@m7g2000cwm.googlegroups.com>

Greetings gents. I'm a Railser working on a django app that needs to do
some scraping to gather its data.

I need to programatically access a site that requires a username and
password. Once I post to the login.php page, there seems to be a
redirect and it seems that the site is using a session (perhaps a
cookie) to determine whether the user is logged in. So I need to log in
and then have cookies and or sessions maintained as I access the page
that contains the content that I am actually interested in.

What is the simplest way to post data to a form, accept a cookie to
maintain the session (and support redirects) and then (now logged into
the site) retrieve the content of a page on the site?

Is their a library or technique that makes this simple?

Thanks!



From jjl at pobox.com  Sun Sep 17 09:13:56 2006
From: jjl at pobox.com (John J. Lee)
Date: Sun, 17 Sep 2006 13:13:56 GMT
Subject: RegexBuddy (anyone use this?)
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<1158420540.813155.135850@k70g2000cwa.googlegroups.com>
	<1158422020.995631.61740@m7g2000cwm.googlegroups.com>
	<1158426726.483021.199700@h48g2000cwc.googlegroups.com>
Message-ID: <87ejuatz3f.fsf@pobox.com>

"Eric_Dexter at msn.com" <Eric_Dexter at msn.com> writes:
[...]
> kodos does look good but I do not have the pyqt (maybe I am slightly
> off) interface to use it on my system..  with another graphic interface
[...]

So... why not just install pyqt?

http://www.diotavelli.net/PyQtWiki/FrequentlyAskedQuestions


On the systems I use for development, I'd type "emerge PyQt" (Gentoo)
or double-click on the installer .exe (Windows).  RPM-based and
Debian-based systems are just as easy.  Can't see a MacOS installer,
but the source is there and PyQt 4 works fine on that system.


John


From fakeaddress at nowhere.org  Fri Sep  8 16:07:26 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 08 Sep 2006 20:07:26 GMT
Subject: mysqldb + multi-threading
In-Reply-To: <0piMg.136445$LF4.125458@dukeread05>
References: <0piMg.136445$LF4.125458@dukeread05>
Message-ID: <24kMg.11472$q63.11207@newssvr13.news.prodigy.com>

hg wrote:
> I am writing a transaction server (socket-based) under windows.
> 
> I use mysqldb to log info into MySQL.
> 
> It is all working and I need now to decide whether to use forks
> (CreateProcess I guess) or threads.
> 
> I saw in another thread that some db engines did have issues with being
> called from threads.

Some DBMS engines, particularly SQLite, actually run within the 
Python process. They might have issues with multiple threads,
but multiple processes is a nonstarter.

MySQL has its own process. It doesn't know nor care whether
your application makes connections from different processes
or different threads in the same process.

> My gut feeling is to use threads (note: each transaction is finite, so
> the process/thread die fairly quickly).
> 
> Any insight ?

Go with your gut. Python threads are reasonably portable, and
work well on modern MS-Windows.


-- 
--Bryan


From antroy at gmail.com  Wed Sep 13 10:43:06 2006
From: antroy at gmail.com (Ant)
Date: 13 Sep 2006 07:43:06 -0700
Subject: RELEASED Python 2.5 (release candidate 2)
In-Reply-To: <mailman.19.1158149124.10491.python-list@python.org>
References: <mailman.19.1158149124.10491.python-list@python.org>
Message-ID: <1158158585.959817.189160@e3g2000cwe.googlegroups.com>


Anthony Baxter wrote:
...
> code in 2.5 before the final release. *Please* try this
> release out and let us know about any problems you find.

Not a problem with the release, but with the docs. I've just ported a
module using the ElementTree package to 2.5, and the Module Index
(http://docs.python.org/dev/modindex.html) lists the package as
elementtree, where it should be xml.etree.

Not a major problem, but threw me for a while, since the only reference
to the actual name of the module is in the title of
http://docs.python.org/dev/lib/module-elementtree.html (8.13
elementtree -- The xml.etree.ElementTree Module).



From bj_666 at gmx.net  Thu Sep 28 17:38:09 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Thu, 28 Sep 2006 23:38:09 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<mailman.901.1159469166.10491.python-list@python.org>
	<efhdt1$9a1$1@mlucom4.urz.uni-halle.de>
Message-ID: <pan.2006.09.28.21.38.05.238983@gmx.net>

In <efhdt1$9a1$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:

> Thus spoke Frederic Rentsch (on 2006-09-28 20:43):
>> bearophileHUGS at lycos.com wrote:
>>> Mirco Wahab:
>>>   
>>>> But where is the %b in Python?
>>>
>>> Python doesn't have that. ...
>>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440528
>>   
>> Good idea, but shorter with -> 
>> http://cheeseshop.python.org/pypi/SE/2.2%20beta
>> SE.SE ('se_definition_files/int_to_binary.se') ('%X' % 987654321)
>> '00111010110111100110100010110001'
> 
> I don't really understand here:
> 
> - why doesn't have Python such a simple and useful thing as to_binstr(...)

Maybe simple, but useful?  And if you really need this it's simple to
implement or look up in the cook book.

> - why would you favor such complicated solutions
>   for this (as posted), when you can have this
>   in one line, e.g.:
> 
>   def int2bin(num, width=32):
>     return ''.join(['%c'%(ord('0')+bool((1<<k)&num)) for k in range((width-1),-1,-1)])

Yeah, I wonder why not everybody sees the beauty in this cool and
straightforward one liner.  ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From skip at pobox.com  Mon Sep  4 08:28:04 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 4 Sep 2006 07:28:04 -0500
Subject: python-database
In-Reply-To: <1157344805.31869.181.camel@devilbox>
References: <1157344218.628453.158360@74g2000cwt.googlegroups.com>
	<1157344805.31869.181.camel@devilbox>
Message-ID: <17660.7124.100908.477102@montanaro.dyndns.org>


    Cliff> On Sun, 2006-09-03 at 21:30 -0700, sridhar wrote:
    >> is there any way to call stored procedures from python as in java?

    Cliff> I mostly use PostgreSQL, so perhaps it's different for some other
    Cliff> databases, but calling stored procedures doesn't require any
    Cliff> special support from the language or driver.  Usually you simply
    Cliff> SELECT from the stored procedure.

In a stored procedure you can execute multiple SELECTs.  On the receiving
end you need some way to distinguish each result set.

Skip


From fredrik at pythonware.com  Tue Sep 12 06:48:04 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 12:48:04 +0200
Subject: deprecated python 2.5
In-Reply-To: <8a8f62c80609120324q58af3098q27ca547784e8fc8a@mail.gmail.com>
References: <8a8f62c80609120324q58af3098q27ca547784e8fc8a@mail.gmail.com>
Message-ID: <ee6393$rhd$1@sea.gmane.org>

bussiere maillist wrote:

> DeprecationWarning: struct integer overflow masking is deprecated
>   return struct.pack('>H', ~value)
>  i didn't understand if someone have some explanation
> and what uses instead.

the value doesn't fit in 16 bits.  try masking off the extra bits on the 
way in:

     struct.pack("<H", (~value) & 0xFFFF)

</F>



From steve at holdenweb.com  Thu Sep 21 14:20:09 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 21 Sep 2006 14:20:09 -0400
Subject: I need some help with a regexp please
In-Reply-To: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
Message-ID: <eeul38$vku$1@sea.gmane.org>

codefire wrote:
> Hi,
> 
> I am trying to get a regexp to validate email addresses but can't get
> it quite right. The problem is I can't quite find the regexp to deal
> with ignoring the case james..kirk at fred.com, which is not valid. Here's
> my attempt, neither of my regexps work quite how I want:
> 
> [code]
> import os
> import re
> 
> s = 'Hi james..kirk at fred.com dr.spock at blarg.com jim at home.com @@not
> scottie at home.space.com partridge in a pear tree'
> r = re.compile(r'\w+\.?\w+@[^@\s]+\.\w+')
> #r = re.compile(r'[a-z\-\.]+@[a-z\-\.]+')
> 
> addys = set()
> for a in r.findall(s):
>     addys.add(a)
> 
> for a in sorted(addys):
>     print a
> [/code]
> 
> This gives:
> dr.spock at blarg.com
> jim at home.com
> kirk at fred.com   <-- shouldn't be here :(
> scottie at home.space.com
> 
> Nearly there but no cigar :)
> 
> I can't see the wood for the trees now :) Can anyone suggest a fix
> please?
> 
The problem is that your pattern doesn't start out by confirming that 
it's either at the start of a line or after whitespace. You could do 
this with a "look-behind assertion" if you wanted.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sargis at ieee.org  Tue Sep 19 12:47:46 2006
From: sargis at ieee.org (sargis at ieee.org)
Date: 19 Sep 2006 09:47:46 -0700
Subject: ANN: Python Molecular Viewer - 1.4.3
Message-ID: <1158684466.692694.99300@i3g2000cwc.googlegroups.com>

We are pleased to announce version 1.4.3 of our software tools
including: PMV, ADT and VISION.

Binary (LINUX, Mac OS X and Windows) and Source distributions can be
downloaded from:
http://mgltools.scripps.edu/downloads

NEW FEATURES:
--------------------------

PMV:
   - added support for rendering secondary structures in DNAs/RNAs
   - helpCommands.py is added to provide About-->Help widget.
   - added progressBar to APBS Web Services.
   - added Open DX reader to Grid commands.
   - added a command to build coarse molecular surface.

Vision:
  - parenting system is now compatible with geoms imported from pmv
  - introduced real 3d labels

DejaVu:
  - editable color palette to modify predefined atom's colors
  - several new mode of stereo vision
  - improved tile renderer (works also with stereo vision modes)
  - added NucleicBases.py for displaying Nucleic Bases.

Volume:
  - Binary AVS Field data parser is added.
  - added all supported files in ReadAnyMap node.

And of course many bug fixes across all packages.

For other inquiries, send an email to mgltools mgltools(at)scripps.edu

More information can be found on our web site at
http://mgltools.scripps.edu

Thank you for using our tools. 

The MGLTools development team



From franz.steinhaeusler at gmx.at  Sat Sep 16 12:35:13 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhäusler)
Date: Sat, 16 Sep 2006 18:35:13 +0200
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
Message-ID: <599og29q5ano6pn3s0fi13533h86j747kk@4ax.com>

On Sat, 16 Sep 2006 18:16:13 +0200, Franz Steinh?usler
<franz.steinhaeusler at gmx.at> wrote:

:::: Sat Sep 16 18:23:04 2006 :::: 

For the find, I personally would prefer to jump default to "body",
but this is of course a matter of taste.
Could that be an option.

I dos prompt, all the time the prompt doesn't return anymore
(are there still open windows)?


I quit with ctrl-break:

Traceback (most recent call last):

  File "c:\Programme\xpn\xpn.py", line 507, in destroy

    self.purge_groups()

  File "c:\Programme\xpn\xpn.py", line 2456, in purge_groups

    articles.update(articles_dict)

  File "C:\Python24\lib\UserDict.py", line 147, in update

    self[k] = v

  File "c:\Python24\lib\shelve.py", line 129, in __setitem__

    p.dump(value)

KeyboardInterrupt

If I start next time I get "An Instance of XPN" is already running.

I think, there is a problem with the shutdown of the program.


I changed the key Find message to ctrl f, and then I restart, I got:


Traceback (most recent call last):
  File "c:\Programme\xpn\xpn.py", line 2987, in ?
    main=MainWin(options.use_home,options.custom_dir)
  File "c:\Programme\xpn\xpn.py", line 2917, in __init__
    self.show_subscribed()
  File "c:\Programme\xpn\xpn.py", line 557, in show_subscribed
    total=len(articles.keys())
  File "c:\Python24\lib\shelve.py", line 98, in keys
    return self.dict.keys()
  File "C:\Python24\lib\bsddb\__init__.py", line 238, in keys
    return self.db.keys()
DBPageNotFoundError: (-30988, 'DB_PAGE_NOTFOUND: Requested page not
found')

I cannot start the program anymore.

maybe it has something to to with shortcuts.dat. 
(I don't know).

Cheers,
-- 
Franz Steinhaeusler


From slinkp at gmail.com  Fri Sep  1 14:53:37 2006
From: slinkp at gmail.com (slinkp at gmail.com)
Date: 1 Sep 2006 11:53:37 -0700
Subject: $HOSTNAME not in os.environ?
Message-ID: <1157136817.528348.107350@h48g2000cwc.googlegroups.com>

Can anybody explain this one?

pw at kermit ~ $ python
Python 2.4.3 (#1, Jul 27 2006, 13:07:44)
[GCC 3.4.6 (Gentoo 3.4.6-r1, ssp-3.4.5-1.0, pie-8.7.9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.environ['HOSTNAME']
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib64/python2.4/UserDict.py", line 17, in __getitem__
    def __getitem__(self, key): return self.data[key]
KeyError: 'HOSTNAME'
>>> print os.getenv('HOSTNAME')
None
>>>
pw at kermit ~ $ echo $HOSTNAME
kermit
pw at kermit ~ $ uname -a
Linux kermit 2.6.17-gentoo-r4amd64-preempt-noapic #1 PREEMPT Thu Jul 27
12:56:53 EDT 2006 x86_64 AMD Athlon(tm) 64 Processor 3500+ GNU/Linux


i-swear-it-used-to-be-there-ly-y'rs,

Paul Winkler



From robert.kern at gmail.com  Sun Sep 24 17:55:54 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 24 Sep 2006 16:55:54 -0500
Subject: IDLE - Customizing output format
In-Reply-To: <1159130442.913233.276910@k70g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
Message-ID: <ef6ut6$61r$1@sea.gmane.org>

Ilias Lazaridis wrote:
> Steve Holden wrote:

>> And I am wondering at your continual surprise when the rest of the world
>> fails to share your perceptions. Doesn't this carry *any* information?
> 
> not the rest of the world, but the rest of the python community.

Remember back when you first came to comp.lang.python and I told you that this 
was not the community that you were looking for?

   http://mail.python.org/pipermail/python-list/2005-February/266629.html

Good times.

Anyways, against my better judgement, I will tell you that you can customize the 
output by replacing sys.displayhook with your own function:

   http://www.python.org/doc/current/lib/module-sys.html

 >>> import sys
 >>> 1
1
 >>> def f(obj):
	print '    ' + repr(obj)

	
 >>> sys.displayhook = f
 >>> 1
     1
 >>>

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From danielmarkhot at gmail.com  Thu Sep 28 10:14:43 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 28 Sep 2006 07:14:43 -0700
Subject: remove the last character or the newline character?
Message-ID: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>

Hello all:

I have the following snippet:

In [1]: fileName = 'Perfect Setup.txt\n'
In [2]: fileName = fileName[0:len(fileName)-1)]   # remove the '\n'
character
In [3]: fileName
Out[3]: 'Perfect Setup.txt'

Question one:
Does python provide any function that can remove the last character of
a string?
I don't know whether or not the method I used is efficient

Question two:
Does python provide any function that can remove the newline character
from a string if it exists?



Thank very much!
-Daniel



From robert.kern at gmail.com  Tue Sep 26 16:18:04 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 26 Sep 2006 15:18:04 -0500
Subject: Reading a file using a UNC - help!
In-Reply-To: <1159301192.615441.256710@i3g2000cwc.googlegroups.com>
References: <1159301192.615441.256710@i3g2000cwc.googlegroups.com>
Message-ID: <efc1tn$bn5$1@sea.gmane.org>

richard.kessler at matteicos.com wrote:
> I have the simplest need...to read a file full of file names(unc) and
> then check to see if each of these files exists.  I tried with the
> following program, but always get file not found, even when it is
> there. If I type in the file name as a literal it works...
> 
> Little program:
> 
> #This module checks for file existence
> import string
> import sys
> 
> def MainProcess():
> 
>     fileList = "c:\a_list_of_filenames.txt"

\ is the escape character in strings, so if you need an actual backslash, you 
need to double it:

   fileList = "c:\\a_list_of_filenames.txt"

or use "raw" string literals, which don't do any escaping:

   fileList = r"c:\a_list_of_filenames.txt"

Please see the tutorial:

   http://docs.python.org/tut/node5.html#SECTION005120000000000000000

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From frithiof.jensen at die_spammer_die.ericsson.com  Mon Sep 25 05:20:59 2006
From: frithiof.jensen at die_spammer_die.ericsson.com (Frithiof Andreas Jensen)
Date: Mon, 25 Sep 2006 11:20:59 +0200
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
Message-ID: <ef871s$fkk$1@news.al.sw.ericsson.se>


"Ingo Linkweiler" <ingo.bear_NOSPAM at freenet.de> wrote in message
news:ef5nop$aoh$1 at news01.versatel.de...
> Bjoern Schliessmann schrieb:
> > Ingo Linkweiler wrote:
> >
> >> b) verify an existing mailserver or DNS/MX records
> >
> > "Or"? That's two different things.
> >
> > If you don't know already: Even if you test all this, it is still
> > possible that
> >
> > - the target mail account doesn't exist
> > - the sender's IP is filtered by the server so he'll reject
>
> Yes, I know this.
> But its still better than not checking it.
> The script will be used as part auf a user registration page to avoid
> dummy-inputs like "jsfhsadgfa at hdhjdfhjh.net"

Why bother, you will loose anyway:

For those kind of sites demanding registration for trivial usage (i.e. most
sites do) I use my own domain controlled by myself - the adress is valid for the
confirmation mail then, after I got what I came for (or after I found out that
this site was a waste of time, which happens entirely too often), the adress is
not valid anymore.

Cuts down the spamvertising a lot!




From amk at amk.ca  Sat Sep 30 13:26:59 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Sat, 30 Sep 2006 12:26:59 -0500
Subject: The Python world tries to be polite [formerly offensive to
	another language]
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<1159555450.721085.51710@h48g2000cwc.googlegroups.com>
	<mailman.990.1159598785.10491.python-list@python.org>
	<1159601820.592847.42160@i3g2000cwc.googlegroups.com>
	<mailman.996.1159603783.10491.python-list@python.org>
Message-ID: <_vidnZxCbMF-NYPYnZ2dnUVZ_qqdnZ2d@speakeasy.net>

On Sat, 30 Sep 2006 09:10:14 +0100, 
	Steve Holden <steve at holdenweb.com> wrote:
> My God, Perl 6 is going to be even less comprehensible that Perl 5, 
> which was at least usable. Is ?=>? really a Perl6 operator? That's too 
> funny!

While we poor Python people have to cope with writing:
	d = dict(zip(k, v))
instead of Perl 6's 
	%h = @k >>=><< @v;

But at least the Perl solution is 4 non-whitespace characters
shorter... unless you don't write the source in Unicode, in which you
have to put >> and << instead of the chevrons -- that makes it only 2
characters shorter.

> hoping-the-chevrons-were-emphasis-on-ly y'rs  - steve

Nope; they turn the operator into a hyper operator that iterates over
its operands.  See
<http://dev.perl.org/perl6/doc/design/syn/S03.html#___top>.  Perl 6:
the PL/1 of scripting languages.

--amk



From martin at v.loewis.de  Wed Sep 20 13:18:54 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 20 Sep 2006 19:18:54 +0200
Subject: high level, fast XML package for Python?
In-Reply-To: <1158705468.592531.252660@i3g2000cwc.googlegroups.com>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<450CF5CF.3090109@v.loewis.de>
	<1158705468.592531.252660@i3g2000cwc.googlegroups.com>
Message-ID: <451177FE.5080004@v.loewis.de>

Paul Boddie schrieb:
>> It seems that everybody is proposing libraries that use in-memory
>> representations. There is a standard xml package for Python, it's
>> called "xml" (and comes with the standard library). It contains a
>> SAX interface, xml.sax, which can parse files incrementally.
> 
> What about xml.dom.pulldom? It quite possibly resembles ElementTree's
> iterparse, or at least promotes event-style handling of XML information
> using some kind of mainloop...

Right; that also meets the criteria of being standard and not
in-memory (nobody had mentioned it so far).

Whether it is high-level and fast is in the eyes of the beholder
(as they are relative, rather than absolute properties).

Regards,
Martin


From bvdp at xplornet.com  Sat Sep  9 12:55:12 2006
From: bvdp at xplornet.com (bvdp at xplornet.com)
Date: 9 Sep 2006 09:55:12 -0700
Subject: convert loop to list comprehension
In-Reply-To: <7xlkothj2h.fsf@ruckus.brouhaha.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
	<1157762409.805195.231770@m73g2000cwd.googlegroups.com>
	<1157767525.761220.117190@d34g2000cwd.googlegroups.com>
	<1157768144.939694.81730@b28g2000cwb.googlegroups.com>
	<7xlkothj2h.fsf@ruckus.brouhaha.com>
Message-ID: <1157820912.524201.46560@e3g2000cwe.googlegroups.com>


Paul Rubin wrote:
> "bvdp at xplornet.com" <bvdp at xplornet.com> writes:
> > > FWIW, the original loop looked perfectly fine and readable and I'd
> > > suggest going with that over these hacked-up listcomp solutions.  Don't
> > > use a listcomp just for the sake of using a listcomp.
> >
> > Thanks for that, Carl. I think that using the loop is probably what
> > I'll end up doing. I had no idea that the listcomp thing would be quite
> > a complicated as it is appearing. I had it in my mind that I was
> > missing some obvious thing which would create a simple solution :)
>
> I think even if you code a loop, it's still cleaner to use enumerate:
>
>
>     seq = [2, 3, 1, 9]
>     tmp = []
>     for i,a in enumerate(seq):
>         tmp.extend([i]*a)

Oh, good! Yes, cleaner ... and in my little test a tiny bit faster.
Thanks.



From iker.arizmendi at gmail.com  Thu Sep 28 20:46:50 2006
From: iker.arizmendi at gmail.com (iker.arizmendi at gmail.com)
Date: 28 Sep 2006 17:46:50 -0700
Subject: releasing memory to malloc
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
Message-ID: <1159490810.239269.213740@m7g2000cwm.googlegroups.com>

The workaround I went with made use of the shelve module and
calls to gc.collect() to cap the memory consumed by the Python
allocator. It was a bit intrusive but it got the job done.

Would a method in the gc module that released memory to malloc
be something that could get added to Python? Or are there some
reasons why allowing that would be a bad idea?

Regards,
Iker

P.S.
This may be a repeat of an earlier message - it seems that
google groups may have discarded my earlier post.


iker.arizmendi at gmail.com wrote:
> Is there any way to get Python to release memory back to the
> C allocator? I'm currently running a script that goes through
> the following steps:
>
> 1) Creates a very large number of Python objects to produce
> a relatively small data structure that sits in a C extension.
> The Python objects consume quite a bit of memory.
>
> 2) Releases all the Python objects.
>
> 3) Invokes a function of said C extension for further
> processing. This step needs as much memory as possible.
>
> I'd like step 2 to return memory to the C allocator so that it
> is available to the extension in step 3 (which uses malloc).
> 
> Regards,
> Iker Arizmendi



From guotie.9 at gmail.com  Tue Sep  5 10:48:23 2006
From: guotie.9 at gmail.com (=?utf-8?B?5Y+u5Y+u5b2T5b2T?=)
Date: 5 Sep 2006 07:48:23 -0700
Subject: are there any lib for receive hotmail ?
In-Reply-To: <ONXKg.8550$o42.6314@tornado.texas.rr.com>
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>
	<ONXKg.8550$o42.6314@tornado.texas.rr.com>
Message-ID: <1157467698.407373.273750@d34g2000cwd.googlegroups.com>

poplib cannot receive hotmail.


Paul McGuire wrote:
> "????" <guotie.9 at gmail.com> wrote in message
> news:1157374039.234282.238570 at m79g2000cwm.googlegroups.com...
> > thanks.
> >
> 
> poplib



From wildemar at freakmail.de  Sun Sep 17 14:55:45 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sun, 17 Sep 2006 20:55:45 +0200
Subject: Hardlinks on NTFS
In-Reply-To: <76fd5acf0609171131t3378018bqbe734307dfe0045@mail.gmail.com>
References: <450D81BB.20005@freakmail.de>
	<76fd5acf0609171131t3378018bqbe734307dfe0045@mail.gmail.com>
Message-ID: <450D9A31.5060506@freakmail.de>

Calvin Spealman wrote:
> On 9/17/06, Wildemar Wildenburger <wildemar at freakmail.de> wrote:
>> Hi :)
>>
>> I'm thinking of letting my program create hardlinks (or symlinks). I
>> know python allows doing this for ext, reiser and the like, but
>> apparently not for ntfs systems.
>> Is there any package out there that lets me create links in a platform
>> independent way?
>>
>> bye
>> wildemar
> 
> Why isn't NTFS handled the same as any other hardlink supporting
> filesystem? Is it a choice or a bug?

I'm not following you. A choice, certainly.
Is this one of those 'windows sucks, don't use it' arguments?
Its just different. Whats the big deal?

I don't feel you want to help me.

wildemar


From __peter__ at web.de  Fri Sep 22 07:03:16 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 22 Sep 2006 13:03:16 +0200
Subject: Is it possible to save a running program and reload next time ?
References: <mailman.386.1158824225.10491.python-list@python.org>	<FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>	<mailman.412.1158845232.10491.python-list@python.org>	<eeu8b9$108$1@fuerst.cs.uni-magdeburg.de>	<mailman.444.1158905950.10491.python-list@python.org>
	<ef009v$c25$1@fuerst.cs.uni-magdeburg.de>
	<mailman.449.1158919263.10491.python-list@python.org>
Message-ID: <ef0fqo$53j$00$1@news.t-online.com>

fdu.xiaojf at gmail.com wrote:

> Can the state of the random value generator be saved ?

Yes. You can pickle random._inst or your own random.Random instance.

Peter 



From antroy at gmail.com  Sat Sep  2 13:30:44 2006
From: antroy at gmail.com (Ant)
Date: 2 Sep 2006 10:30:44 -0700
Subject: How to run Python file?
In-Reply-To: <edcc3k$em0$1@inews.gazeta.pl>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
	<pan.2006.09.02.15.34.21.458976@users.sf.net>
	<edcc3k$em0$1@inews.gazeta.pl>
Message-ID: <1157218244.750434.36220@h48g2000cwc.googlegroups.com>


zefciu wrote:
> Pontus Ekberg wrote:
...
> > $ python test.py
> >
> > or
> >
> > $ ./test.py (if test.py is executable)
> >
> >
> Thats if you use un*x.  If you word under windows, the first would work,

As would:

> test.py

Assuming python grabbed the .py extensions correctly (which it shouold
have done with any recent version).



From sjmachin at lexicon.net  Tue Sep 26 20:05:18 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 17:05:18 -0700
Subject: problem moving from char to integer
In-Reply-To: <1159313008.738945.127950@i42g2000cwa.googlegroups.com>
References: <1159312523.880618.316150@m7g2000cwm.googlegroups.com>
	<pan.2006.09.26.23.19.22.800843@users.sf.net>
	<1159313008.738945.127950@i42g2000cwa.googlegroups.com>
Message-ID: <1159315518.595110.266760@m7g2000cwm.googlegroups.com>


Melih Onvural wrote:
> This is the error message that I'm having a tough time interpreting:
> Traceback (most recent call last):
>   File "pagerank.py", line 101, in ?
>     main()
>   File "pagerank.py", line 96, in main
>     ch = strord(url)
>   File "pagerank.py", line 81, in strord
>     result[counter] = int(i);
> ValueError: invalid literal for int(): i
>
> and here is the full code:
>
> def strord(url):
>     counter=0;
>     for i in url:
>        result[counter] = int(i);
>        counter += 1;
>
>     return result;

You are getting this error because you are trying to convert string to
integer, but this of course complains if it finds unexpected
non-digits.
int('9') -> 9
int('x') -> this error
You may be looking for the ord() function:
ord('9') -> 57
ord('x') -> 120

In any case, once you've sorted that out, your function will die in the
same statement, because "result" isn't defined. Python isn't awk :-)

Given the name of your function (strord), perhaps what you really want
is this:

def strord(any_string):
    return [ord(x) for x in any_string]

but why you'd want that (unless you were trying to pretend that Python
is C), I'm having a little troubling imagining ...

Perhaps if you told us what you are really trying to do, we could help
you a little better.

HTH,
John



From python.list at tim.thechases.com  Mon Sep 11 09:48:12 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 11 Sep 2006 08:48:12 -0500
Subject: extracting substrings from a file
In-Reply-To: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>
References: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>
Message-ID: <4505691C.8000308@tim.thechases.com>

> I have a file with several entries in the form:
> 
> AFFX-BioB-5_at	 E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
> corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
> 7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
> 7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
> dethiobiotin synthetase (bioD), complete cds.
> 
> 1415785_a_at	 /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
> /CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
> /DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
> /PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1
> 
> and I would like to create a file that has only the following:
> 
> AFFX-BioB-5_at  /GEN=bioB  /gb:J04423.1
> 
> 1415785_a_at	 /gb:NM_009840.1 /GEN=Cct8
> 
> Could anyone please tell me how can I do it?

The following seems to do it for me...

outfile = file('out.txt', 'w')
for line in file('in.txt'):
         if '/GEN' in line and '/gb:' in line:
                 newline = []
                 for index, item in enumerate(line.split()):
                         if index == 0 or item.startswith('/GEN') 
or item.startswith('/gb:'):
                                 newline.append(item)
                 outfile.write('\t'.join(newline))
                 outfile.write('\n')
outfile.close()


There are some underdefined conditions...I presume that both the 
GEN and gb: have to appear in the line.  If only one of them is 
required, change the "and" to an "or".

-tkc





From tenax.raccoon at gmail.com  Fri Sep 15 10:02:24 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 15 Sep 2006 07:02:24 -0700
Subject: add without carry
In-Reply-To: <slrnegl4na.qdk.jon+usenet@snowy.squish.net>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<450a7dec$0$14661$626a54ce@news.free.fr>
	<slrnegl4na.qdk.jon+usenet@snowy.squish.net>
Message-ID: <1158328944.024522.5300@d34g2000cwd.googlegroups.com>

Jon Ribbens wrote:
> In article <450a7dec$0$14661$626a54ce at news.free.fr>, Bruno Desthuilliers wrote:
> >
> > No need to think too long to come up with the most possibly Q&D solution:
> >
> > res = int(str(5 + 7)[-1])
>
> Am I missing something subtle in the question or is there some reason
> that nobody has posted the correct solution:
>
>   (a + b) % 10
>
> ?

You're not missing anything.  That's the obvious solution.  We're just
celebrating our non-Dutchness at the moment.

>>> def bound(value, maxBound):
...     while value > maxBound:
...         value -= maxBound
...     return value
...
>>> bound(5 + 6, 10)
1
>>> bound(8 + 7, 10)
5

See?  I'm definitely not Dutch.

    --Jason



From http  Fri Sep  8 16:50:09 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 13:50:09 -0700
Subject: best split tokens?
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
Message-ID: <7xvenydqwu.fsf@ruckus.brouhaha.com>

"Jay" <jaysherby at gmail.com> writes:
> Let's say, for instance, that one was programming a spell checker or
> some other function where the contents of a string from a text-editor's
> text box needed to be split so that the resulting array has each word
> as an element.  Is there a shortcut to do this and, if not, what's the
> best and most efficient token group for the split function to achieve
> this?

I'd just use alphabetic strings:

   textbox = 'Apple pie and penguins'
   words = re.findall('[a-z]+', textbox, re.I)


From bignose+hates-spam at benfinney.id.au  Wed Sep 27 19:57:59 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 28 Sep 2006 09:57:59 +1000
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159367692.197632.162250@i3g2000cwc.googlegroups.com>
Message-ID: <87d59glv5k.fsf@benfinney.id.au>

"Michele Simionato" <michele.simionato at gmail.com> writes:

> John Salerno wrote:
> > But what if you are an expert Python program and have zero clue about
> > other languages?
>
> Well I want to play devil's advocate here, and I think that if you
> know Python you can earn your living. Heck, there are people knowing
> Visual Basic only that earn their living! ;)

The question of whether they can earn their living is separate from
the question of whether they are experts (though John Salerno asked
the one with the assumption of the other).

I submit that a programmer who knows *only* one programming language
can never be an expert in that language; it is only exposure to
multiple tools and ways of programming that can grow a one-trick pony
into an expert.

-- 
 \             "Today, I was -- no, that wasn't me."  -- Steven Wright |
  `\                                                                   |
_o__)                                                                  |
Ben Finney



From sjdevnull at yahoo.com  Sun Sep 17 05:47:50 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 17 Sep 2006 02:47:50 -0700
Subject: Python programs always open source?
In-Reply-To: <450d07e1$0$19729$88260bb3@free.teranews.com>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
Message-ID: <1158486470.243153.148790@i3g2000cwc.googlegroups.com>

Guy Fawkes wrote:
> I was wondering if Python programs always need to include the source code
> with the program itself. I'm asking this because I don't want my program to
> be open-source and so far all the Python programs I've seen included the
> source code.

You can include the source code but still not be open source; it's not
unusual for python programs to have licenses prohibiting the
modification or redistribution of the source code.

> Is it possible to make an executable with only bytecode?

You can import and use the .pyc files with a few caveats.  They're
pretty trivial to disassemble though, so it's rarely worth it; just
make clear what's allowed (and what's not allowed) in your license.



From jjl at pobox.com  Fri Sep  8 13:53:57 2006
From: jjl at pobox.com (John J. Lee)
Date: 08 Sep 2006 18:53:57 +0100
Subject: Add NTLM proxy authentication to urllib2
References: <1157442556.636114.294400@i3g2000cwc.googlegroups.com>
	<edkijp$2la$1@nemesis.news.tpi.pl> <87k64fmh1n.fsf@pobox.com>
	<1157713409.573364.48060@h48g2000cwc.googlegroups.com>
Message-ID: <uy7su1byi.fsf@pobox.com>

"looping" <kadeko at gmail.com> writes:

> I've done some tests with urllib2 and pywin32 and managed to partialy
> implement the NTLM authentication, but it look like you need a
> persistent connection (http 1.1 or 'Keep-Alive') to complete the
> authentication.
> Unfortunatly, urllib2 use a new connection for each request and
> changing this behavior look difficult.
> So I will probably write my own library.
> 
> Maybe there is something to do with the urlgrabber module ?

urlgrabber does indeed claim to do persistent connections in a way at
least somewhat integrated with urllib2.

I think I must have imagined there being an NTLM impl. for urllib2,
because ISTR you're right about needing a persistent connection.

I don't think it's too hard to fix urllib2 to reuse connections, but I
forget exactly why it doesn't do it already...


John



From pavlovevidence at gmail.com  Sun Sep 10 18:50:06 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 10 Sep 2006 15:50:06 -0700
Subject: Refactoring Dilemma
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
Message-ID: <1157928606.110323.123080@i3g2000cwc.googlegroups.com>

Kamilche wrote:
> '''
> I'm in the middle of a refactoring dilemma.
> I have several singletons that I'm turning into modules, for ease of
> access.
> The usual method is noted as 'Module 1' below.
> The new method is noted as 'Module 2'.
> Is there any reason NOT to do this that I may be unaware of?
> It's easier than remembering to declare global variables at the top of
> the function.
> '''
>
> # ----------- Module 1.py ------------
> # Normal module processing
> var = 0
>
> def MyRoutine():
>     global var
>     var = 1
>
> MyRoutine()
> print var
>
>
> # ----------- Module 2.py ------------
> # 'Self' module processing
> import sys
> var = 0
> self = sys.modules[__name__]
>
> def MyRoutine():
>     self.var = 1
>
> MyRoutine()
> print var

I don't see any major problem with it.  In fact, I think it's a very
good idea to do this, rather than use global statements, when using
module as a singleton class.

I recently made the same transition myself, though I solved it a bit
differently.  I used a decorator to pass the module as the first
argument (actually it passes a proxy to module's global dict, since the
module itself isn't accesible from the function object).

def modmethod(func):
    class modproxy(object):
        __getattribute__ = func.func_globals.__getitem__
        __setattr__ = func.func_globals.__setitem__
    self = modproxy()
    def call_with_module(*args,**kwargs):
        return func(self,*args,**kwargs)
    call_with_module.func_name = func.func_name
    return call_with_module

@modmethod
def MyRoutine(self):
    self.var = 1

MyRoutine()
print var

One problem with my decorator is it makes stack traces a little
bloated. (Also attribute errors are raised as KeyError, but that's
easily fixable.)  Other than that, I've been running it for awhile
without any problems.  I doubt your approach would have many problems,
either. 


Carl Banks



From jaysherby at gmail.com  Fri Sep 22 23:53:02 2006
From: jaysherby at gmail.com (Jay)
Date: 22 Sep 2006 20:53:02 -0700
Subject: grabbing random words
Message-ID: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>

How would I be able to grab random words from an internet source.  I'd
like to grab a random word from a comprehensive internet dictionary.
What would be the best source and the best way to go about this?
Thanks.

(Sorry if this sounds/is super noobish.)



From fredrik at pythonware.com  Mon Sep 11 06:45:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 11 Sep 2006 12:45:52 +0200
Subject: What algorithm does Python use to evaluate: if substring in string
References: <eduhvs$46c$1@news.uit.no>
Message-ID: <ee3ep1$eq0$1@sea.gmane.org>

"Tor Erik" wrote:

> I would be surprised if it is the naive:

2.4 and earlier uses that algorithm (but with a better implementation).

And "naive" isn't really the right word here; on average, a brute force search is pretty
good for the find/index/in use case.  Most fancy algorithms ignore the setup costs and
other overhead, which works well in theory, but not that well in practice.

</F> 





From skip at pobox.com  Fri Sep  8 16:29:52 2006
From: skip at pobox.com (skip at pobox.com)
Date: Fri, 8 Sep 2006 15:29:52 -0500
Subject: mysqldb + multi-threading
In-Reply-To: <24kMg.11472$q63.11207@newssvr13.news.prodigy.com>
References: <0piMg.136445$LF4.125458@dukeread05>
	<24kMg.11472$q63.11207@newssvr13.news.prodigy.com>
Message-ID: <17665.53952.474636.355932@montanaro.dyndns.org>


    Bryan> MySQL has its own process. It doesn't know nor care whether your
    Bryan> application makes connections from different processes or
    Bryan> different threads in the same process.

Yes, but on the client side the data structures may or may not be
thread-safe.  A session on my web server:

    [skip at orca ~]$ python
    Python 2.3.4 (#1, Mar 10 2006, 06:12:09)
    [GCC 3.4.5 20051201 (Red Hat 3.4.5-2)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import MySQLdb
    >>> MySQLdb.threadsafety
    1
    >>> MySQLdb.version_info
    (1, 1, 7, 'final', 1)

Looking up threadsafety in PEP 249 we see:

    threadsafety

        Integer constant stating the level of thread safety the
        interface supports. Possible values are:

            0     Threads may not share the module.
            1     Threads may share the module, but not connections.
            2     Threads may share the module and connections.
            3     Threads may share the module, connections and
                  cursors.

So if you want to use multiple threads they can't share connections.

    >> My gut feeling is to use threads (note: each transaction is finite,
    >> so the process/thread die fairly quickly).

    Bryan> Go with your gut. Python threads are reasonably portable, and
    Bryan> work well on modern MS-Windows.

Maybe ignore your gut and read the documentation. ;-)

Skip


From faulkner612 at comcast.net  Sun Sep 17 15:44:43 2006
From: faulkner612 at comcast.net (faulkner)
Date: 17 Sep 2006 12:44:43 -0700
Subject: Webbrowser written totally in Python
In-Reply-To: <eek5bg$lm2$1@newsreader2.utanet.at>
References: <eek5bg$lm2$1@newsreader2.utanet.at>
Message-ID: <1158522283.001453.112660@d34g2000cwd.googlegroups.com>

this was just on digg:
######################
import wx
from urllib import urlopen
import wx.html

class Frame(wx.Frame):

	def userPageButton(self, event):
		goToPage=self.userPage.GetValue()
		goToPage='http://www.' + goToPage
		webpage=urlopen(goToPage).read()
		displayPage=self.html.SetPage(webpage)

	def __init__(self):
		wx.Frame.__init__(self, parent=None, id=-1, title='microBrowser',
size=(800, 600), pos=(50, 50))
		panel=wx.Panel(self)
		self.userPage=wx.TextCtrl(panel, pos=(400, 5)) #
		self.html = wx.html.HtmlWindow(panel, id=-1, size=(780, 530),
pos=(10, 35), style=wx.html.HW_SCROLLBAR_AUTO)
		userPageButton=wx.Button(panel, label='Go!', pos=(300, 5))
		userPageButton.Bind(wx.EVT_BUTTON, self.userPageButton)

class App(wx.App):

	def OnInit(self):
		self.frame=Frame()
		self.frame.Show()
		self.SetTopWindow(self.frame)
		return True

if __name__=='__main__':
	app=App()
	app.MainLoop()

#################
there are also python bindings for gtkmozembed in gnome-python-extras
and here:
http://sourceforge.net/projects/pygtkmoz


Franz Steinhaeusler wrote:
> Hello NG,
>
> is there any (GUI) webbrowser written completly in Python?
> 
> in pyGtk, pyQt, wxPython or TkInter?
> 
> -- 
> Franz Steinhaeusler



From http  Sat Sep  9 19:22:51 2006
From: http (Paul Rubin)
Date: 09 Sep 2006 16:22:51 -0700
Subject: Secure Postgres access
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
	<pan.2006.09.08.01.11.22.368386@umn.edu>
	<7xvenzt9zz.fsf@ruckus.brouhaha.com>
	<pan.2006.09.09.17.40.19.754820@reidster.net>
Message-ID: <7xhczg7hh0.fsf@ruckus.brouhaha.com>

Reid Priedhorsky <reid at reidster.net> writes:
> B) Work machine. Run by others, many users. I'd like to also run my
> database client (Python) here.

Well, just how much do you distrust that machine?  If you think it's
totally pwned by attackers who will stop at nothing to subvert your
client, you shouldn't run the client there.  How do you propose to
open an SSH connection from a completely untrusted box, for example?
You can't type an SSH password into it since you have to assume that
the keystrokes are being logged.

If you only partially distrust the machine, then figure out what
operations on it you do trust, and work from there.

> What I'd like is functionality similar to what Subversion does with
> "svn+ssh://" URLs: an SSH tunnel that accepts only one connection and
> doesn't have race conditions.

That doesn't sound like the right answer.  It means you have to
carefully arrange your application to open just one db connection and
use it throughout its run.  Many applications are somewhat cavalier
about opening and closing db conns, and and it's sometimes convenient
to write in that style.  Some apps (e.g. multi-threaded ones)
inherently require multiple db conns.  And even if you have an SSH
mode that accepts just one connection, since your db app is separate
and has to connect to the forwarding port after you use a separate
program open the port, how do you stop someone else from grabbing it
first?

I think what you really want is normal, multi-connection SSH port
forwarding to the db server, but that works only for you and doesn't
work for others.  That seems to mean one of:

  1) authentication (like a db password) in the db client, maybe using
     another process that the db client gets a credential from
  2) authentication through SCM_CREDENTIALS on a PF_UNIX socket
  3) authentication via identd on the client machine (i.e. you trust
     the admins on that machine to keep malicious stuff off of the
     privileged ports)
  4) some other scheme yet to be identified

Actually, looking at the doc for ssh-agent(1), it looks like it might
do something like #2 above.  If I understand it, you would run your db
client as something like

   ssh-agent your-client &

and the ssh agent would start your client, exporting an env variable
that your client can use to start ssh without a password and connect
to the db server.  The env variable points to a PF_UNIX socket where
the doc says "the socket is made accessible only to the current user".
Although the docs aren't totally clear, this sounds sort of like what
we're discussing, so I'd say it's worth looking into.

Finally, lately for unrelated reasons I've been looking at Vtun
(vtun.sf.net), a simple VPN program that might be easier to modify
than OpenSSH.  Its security features look worse than ssh's, but maybe
they're enough for your purpose.


From carsten at uniqsys.com  Wed Sep 20 16:47:07 2006
From: carsten at uniqsys.com (Carsten Haese)
Date: Wed, 20 Sep 2006 16:47:07 -0400
Subject: Python/MySQL problem on Windows
In-Reply-To: <qhk63yb7fs.fsf@ruckus.brouhaha.com>
References: <qhk63yb7fs.fsf@ruckus.brouhaha.com>
Message-ID: <1158785226.5045.8.camel@dot.uniqsys.com>

On Wed, 2006-09-20 at 16:37, Eric Smith wrote:
> I'm trying to use Python 2.4.3 and pywin32-209 to access a MySQL
> database on Windows Server 2003 Standard Edition, and not having much
> luck. It seems like parts of the MySQLdb module are not getting loaded
> correctly, but no error message is given during the import, even if I
> give a "-vv" on the command line.
> 
> I'm trying to do:
> 
>     import MySQLdb
>     db = MySQLdb.connection (db="database", user="user", passwd="password")

What happens if you use connect(...) instead of connection(...)?

-Carsten




From steve at holdenweb.com  Wed Sep 13 02:34:45 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 07:34:45 +0100
Subject: How can I get the function's caller?
In-Reply-To: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
Message-ID: <ee88oq$l9o$1@sea.gmane.org>

David wrote:
> Inside a function I need to get the function's caller's name. How can I get
> it?
> 
> thanks in advance.
> 

The "function caller", like most objects in Python, needn't actually 
have a name. It could, for example, be a lambda stored as a list element.

What do you need this name for, just as a materr of interest? There are 
ways of manipulating the stack frames, but they'll be slow and possibly 
unreliable.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep 25 13:39:52 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 25 Sep 2006 19:39:52 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
Message-ID: <slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
>> An escaping function should be small and not do all kinds of
>> escaping for different situations at once.
>
> Even when the two situations are related?

Yup, even then. Different situations need different escaping
functions.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From hg at nospam.com  Wed Sep 13 09:51:12 2006
From: hg at nospam.com (hg)
Date: Wed, 13 Sep 2006 08:51:12 -0500
Subject: socket question
In-Reply-To: <4mqfbnF71d8cU1@uni-berlin.de>
References: <TzTNg.138371$LF4.101169@dukeread05> <4mqfbnF71d8cU1@uni-berlin.de>
Message-ID: <07UNg.138375$LF4.30927@dukeread05>

Diez B. Roggisch wrote:
> hg wrote:
> 
>> Hi,
>>
>> I am not sure whether this is a python-related question.
>>
>> If I have device A than sends XX bytes to device B, and device B does a
>> recv(XX) using the default timeout, what could make device B wake-up
>> with less than XX bytes received ?
> 
> There exist higher abstractions for sockets in python for IPC - are you sure
> you want to reinvent the wheel?
> 
> If you absolutely must: the select-call allows for specification of a
> timeout. Use it with the socket file-descriptor.
> 
> Diez
Thanks I'll look, with the retry-wrapper around recv, it seem to work now.

hg


From uriel.katz at gmail.com  Tue Sep 26 03:33:13 2006
From: uriel.katz at gmail.com (urielka)
Date: 26 Sep 2006 00:33:13 -0700
Subject: accepts decorator
In-Reply-To: <mailman.638.1159254125.10491.python-list@python.org>
References: <1159222161.439787.296650@d34g2000cwd.googlegroups.com>
	<1159232312.285993.309150@h48g2000cwc.googlegroups.com>
	<mailman.638.1159254125.10491.python-list@python.org>
Message-ID: <1159255993.862740.80450@m73g2000cwd.googlegroups.com>

hehe i saw that,that is what made my understand it.
the decorator now works.
let say i have a function decorated with two decorators:

@Accept(int,int)
@OtherDecorator
def myfunc(a,b):
    pass

how can i make the two decorators into one(note:one get parameters and
the other doesn`t)



From nil at dev.nul  Fri Sep  1 12:01:51 2006
From: nil at dev.nul (Christian Stapfer)
Date: Fri, 1 Sep 2006 18:01:51 +0200
Subject: Problem loading true-type font with PIL
Message-ID: <e3b9a$44f8597f$54482a8f$31423@news.hispeed.ch>

After switching from Python 2.3 to 2.4 (Enought),
PIL throws an exception that did not occur formerly
(under Python 2.3) when executing

    ImageFont.truetype(font, size)

where font = "C:/Windows/Fonts/comic.TTF".

Here is the traceback that results:

Traceback (most recent call last):
  File "Gen\gen.py", line 808, in ?
    mylabeler = labeler.Labeler(szNavigFont, iNavigFontSize)
  File "E:\Homepage\Gen\labeler.py", line 11, in __init__
    self._font = ImageFont.truetype(font, size)
  File "C:\Python24\lib\site-packages\PIL\ImageFont.py", line 202, in 
truetype
    return FreeTypeFont(filename, size, index, encoding)
  File "C:\Python24\lib\site-packages\PIL\ImageFont.py", line 120, in 
__init__
    import _imagingft
ImportError: No module named _imagingft

A module seems to be missing: do I have to install something
in addition to PIL in order to be able to load true-type fonts?

Could someone (more knowledgeable than myself as regards PIL
and this true-type font loading business) please point me
in the right direction?

Many thanks in advance,
Christian Stapfer



From sebastien.ramage at gmail.com  Mon Sep 25 06:48:46 2006
From: sebastien.ramage at gmail.com (=?iso-8859-1?q?S=E9bastien_Ramage?=)
Date: 25 Sep 2006 03:48:46 -0700
Subject: PyOpenGL pour python 2.5 ???
In-Reply-To: <1159180756.654944.63830@b28g2000cwb.googlegroups.com>
References: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>
	<4517A3E6.20106@xiludom.gro>
	<1159178528.207890.242410@i42g2000cwa.googlegroups.com>
	<1159180756.654944.63830@b28g2000cwb.googlegroups.com>
Message-ID: <1159181326.095072.161140@m7g2000cwm.googlegroups.com>

good news !

thank for links to the blog, very usefull

now I have to wait

seb



From jarausch at skynet.be  Mon Sep  4 04:00:41 2006
From: jarausch at skynet.be (Helmut Jarausch)
Date: Mon, 04 Sep 2006 10:00:41 +0200
Subject: upgrade 2.4 -> 2.5 HowTo
Message-ID: <44fbdd29$0$28386$ba620e4c@news.skynet.be>

Hi,

what has to be done for upgrading from Python 2.4 to 2.5?

- How can I find out which packages (in addition to the core packages) have been
   installed up to now
- Can I just copy   /usr/local/lib/python2.4/site-packages  to
                     /usr/local/lib/python2.5 ?

Many thanks for a hint,

Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany


From http  Wed Sep 13 06:00:39 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 03:00:39 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<7x8xkol0n9.fsf@ruckus.brouhaha.com>
	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>
	<mailman.14.1158140507.10491.python-list@python.org>
Message-ID: <7xbqpk5bnc.fsf@ruckus.brouhaha.com>

Robin Becker <robin at reportlab.com> writes:
> Nobody seems to have mentioned POSH http://poshmodule.sourceforge.net
> which used almost to work. I assume it's busted for later pythons and
> the author says it's just a demonstration.

Yeah, it's been mentioned.

> Anandtech demoed an 8 core mac pro machine and were unable to "max out
> the cpus".

You mean with POSH??!  And I see a 4 core machine on Apple's site but
not an 8 core.  

> Python needs some kind of multi cpu magic pretty quickly or we'll
> all end up using erlang :)

Heh, yeah ;).  

> As for subprocess I don't see it as much use unless we can at least
> determine the number of cpu's and also set the cpu affinity easy with
> occam maybe not in python.

I haven't looked at Occam.  I've been sort of interested in Alice
(concurrent ML dialect), though apparently the current version is
interpreted.  Erlang is of less somewhat interest to me because it's
dynamically typed like Python.  Not that dynamic typing is bad, but
I'm already familiar with Python (and previously Lisp) so I'd like to
try out one of the type-inferenced languages in order to get a feel
for the difference.  I'd also like to start using something with a
serious optimizing compiler (MLton, Ocaml) but right now none of these
support concurrency.

I guess I should check into GHC:

  http://www.haskell.org/haskellwiki/GHC/Concurrency


From gerold.penz at tirol.utanet.at  Tue Sep 12 17:03:28 2006
From: gerold.penz at tirol.utanet.at (Gerold Penz)
Date: Tue, 12 Sep 2006 23:03:28 +0200
Subject: Create TarFile using python
In-Reply-To: <1158086259.439424.96720@b28g2000cwb.googlegroups.com>
References: <1158086259.439424.96720@b28g2000cwb.googlegroups.com>
Message-ID: <ee77b0$gbs$1@newsreader2.utanet.at>

itzel schrieb:
> I need a script that group a
> list of files using Tar file utility and then, compress that block
> using a compress utility (gzip i think).

Hi!

This script packs all files and directories inside the ``source_dir`` 
into the TAR-GZ-Archive (``destination``):


   import os.path
   import tarfile

   def to_tar_gz(source_dir, destination):
       """
       :param source_dir: Source directory name.
       :param destination: Destination filename.
                           (TAR-GZ-Archive *.tar.gz)
       """

       t = tarfile.open(name = destination, mode = 'w:gz')
       t.add(source_dir, os.path.basename(source))
       t.close()

       return True


Regards,
Gerold
:-)


-- 
________________________________________________________________________
Gerold Penz - bcom - Programmierung
     gerold.penz at tirol.utanet.at | http://gerold.bcom.at | http://sw3.at
Ehrliche, herzliche Begeisterung ist einer der
     wirksamsten Erfolgsfaktoren. Dale Carnegie


From kelemen at inf.elte.hu  Wed Sep 20 05:18:40 2006
From: kelemen at inf.elte.hu (kelemen.viktor)
Date: 20 Sep 2006 02:18:40 -0700
Subject: jpype package, could be path problem
Message-ID: <1158743920.654022.297190@k70g2000cwa.googlegroups.com>

Hello!

Im a quite newbie in the python world.
I have some problem with packages,  i installed the jpype package
according to its intructions.
To test ive written:
> python
>>> import jpype
everything worked correctly but when i wrote a short script:
"
from jpype import *

jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
java.lang.System.out.println("hello world")
shutdownJVM()
"
and tried to run it this's got:

"
Traceback (most recent call last):
  File "/home/kelemen/workspace/JPype/src/helloAgent.py", line 3, in ?

jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
NameError: name 'jpype' is not defined
"

What would be the reason?

thanks in advanced
 Viktor



From Michael.J.Fromberger at Clothing.Dartmouth.EDU  Sat Sep 23 09:25:57 2006
From: Michael.J.Fromberger at Clothing.Dartmouth.EDU (Michael J. Fromberger)
Date: Sat, 23 Sep 2006 09:25:57 -0400
Subject: +1 QOTW
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
	<mailman.473.1158948412.10491.python-list@python.org>
Message-ID: <Michael.J.Fromberger-60C414.09255723092006@localhost>

In article <mailman.473.1158948412.10491.python-list at python.org>,
 "Terry Reedy" <tjreedy at udel.edu> wrote:

> <olsongt at verizon.net> wrote in message 
> news:1158942909.066705.245650 at e3g2000cwe.googlegroups.com...
> > Did anyone else crack up when Larry Wall described python with the
> > statement:
> >
> > Python, as the "anti-Perl," is heavily invested in maintaining Order.
> >
> > In the state of the onion address?
> >
> > http://www.perl.com/pub/a/2006/09/21/onion.html
> 
> There is also this:
> 'But I think the basic Perl paradigm is "Whatever-oriented programming."'

But what this really means, in practise, is "dis-oriented programming."

-M

-- 
Michael J. Fromberger             | Lecturer, Dept. of Computer Science
http://www.dartmouth.edu/~sting/  | Dartmouth College, Hanover, NH, USA


From yichunwe at usc.edu  Sat Sep  9 20:58:47 2006
From: yichunwe at usc.edu (yichun)
Date: Sat, 09 Sep 2006 17:58:47 -0700
Subject: Html character entity conversion
In-Reply-To: <1154285566.501511.117190@b28g2000cwb.googlegroups.com>
References: <1154266972.154519.175040@m73g2000cwd.googlegroups.com>
	<1154274049.338215.116340@75g2000cwc.googlegroups.com>
	<1154285566.501511.117190@b28g2000cwb.googlegroups.com>
Message-ID: <edvo18$hoe$1@gist.usc.edu>

pak.andrei at gmail.com wrote:
> danielx wrote:
>> pak.andrei at gmail.com wrote:
>>> Here is my script:
>>>
>>> from mechanize import *
>>> from BeautifulSoup import *
>>> import StringIO
>>> b = Browser()
>>> f = b.open("http://www.translate.ru/text.asp?lang=ru")
>>> b.select_form(nr=0)
>>> b["source"] = "hello python"
>>> html = b.submit().get_data()
>>> soup = BeautifulSoup(html)
>>> print  soup.find("span", id = "r_text").string
>>>
>>> OUTPUT:
>>> &#1087;&#1088;&#1080;&#1074;&#1077;&#1090;
>>> &#1087;&#1080;&#1090;&#1086;&#1085;
>>> ----------
>>> In russian it looks like:
>>> "?????? ?????"
>>>
>>> How can I translate this using standard Python libraries??
>>>
>>> --
> 
> Thank you for response.
> It doesn't matter what is 'BeautifulSoup'...

However, the best solution is to ask BeautifulSoup to do that for you. 
if you do

soup = BeautifulSoup(your_html_page, convertEntities="html")

you should not be worrying about the problem you had. this converts all 
the html entities (the five you see as soup.entitydefs) and all the 
"&#xxx;" stuff to their python unicode string.

yichun


> General question is:
> 
> How can I convert encoded string
> 
> sEncodedHtmlText = '&#1087;&#1088;&#1080;&#1074;&#1077;&#1090;
> &#1087;&#1080;&#1090;&#1086;&#1085;'
> 
> into human readable:
> 
> sDecodedHtmlText  == '?????? ?????'
> 




From sjmachin at lexicon.net  Sun Sep 10 18:27:17 2006
From: sjmachin at lexicon.net (John Machin)
Date: 10 Sep 2006 15:27:17 -0700
Subject: Unicode / cx_Oracle problem
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
	<rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
	<4mi503F63uluU1@uni-berlin.de>
	<8ce8g29hsh0qefore6psbbrmifiai1vt34@4ax.com>
Message-ID: <1157927237.576170.84270@p79g2000cwp.googlegroups.com>

Richard Schulman wrote:
> On Sun, 10 Sep 2006 11:42:26 +0200, "Diez B. Roggisch"
> <deets at nospam.web.de> wrote:
>
> >What does print repr(mean) give you?
>
> That is a useful suggestion.
>
> For context, I reproduce the source code:
>
> in_file = codecs.open("c:\\pythonapps\\mean.my",encoding="utf_16_LE")
> connection = cx_Oracle.connect("username", "password")
> cursor = connection.cursor()
> for row in in_file:
>     id = row[0]
>     mean = row[1]
>     print "Value of row is ", repr(row)                    #debug line
>     print "Value of the variable 'id' is ", repr(id)       #debug line
>     print "Value of the variable 'mean' is ", repr(mean)   #debug line
>     cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
>         VALUES (:id,:mean)""",id=id,mean=mean)
>
> Here is the result from the print repr() statements:
>
> Value of row is  u"\ufeff(3,'sadness, lament; sympathize with,
> pity')\r\n"
> Value of the variable 'id' is  u'\ufeff'
> Value of the variable 'mean' is  u'('
>
> Clearly, the values loaded into the 'id' and 'mean' variables are not
> satisfactory but are picking up the BOM.

Well of course they're "unsatisfactory" and this is absolutely nothing
to do with Oracle and cx_Oracle.

row is a string of characters. row[0] is the BOM. Read my lips (from a
previous thread):

"""
Use utf_16 -- it will strip off the BOM for you.
"""
and again:
"""
| >>> codecs.open('guff.utf16le', 'r', encoding='utf_16').read()
| u'abc\n\rdef\n\rghi' ######### Look, Mom, no BOM!
"""

row[1] is the first ***character*** of what looks suspiciously like the
Python representation of a tuple:

"""(3,'sadness, lament; sympathize with, pity')"""

Who wrote that like that??? If it is at all under your control, do it
like this:
Encode each Unicode text field in UTF-8. Write the file as a CSV file
using Python's csv module. Read the CSV file using the same module.
Decode the text fields from UTF-8.

You need to parse the incoming line into column values (the csv module
does this for you) and then convert each column value from
string/Unicode to a Python type that is compatible with the Oracle type
for that column.

My guess (not having used cx_Oracle) is that the error is happening
because the column "id" has a numeric type and you are trying to jam a
Unicode string into it. IOW, nothing to do with the "mean" column
(yet!).

BTW, I've managed to decode that "eng" means English not engineering
and "mean" means meaning i.e. not average and not stingy. Holy
obfuscation, Batman!

HTH,
John



From apardon at forel.vub.ac.be  Wed Sep 27 02:47:26 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 27 Sep 2006 06:47:26 GMT
Subject: Top and Bottom Values [PEP: 326]
Message-ID: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>

I know this PEP is rejected. However I have a problem that 
would benefit from having extreme values and the sample
implementation that is given in the PEP is unsatifactory
for my purpose.

I had written my own module, which works similarly but
is somewhat extended. Here is an example of how it can
be used and how I would like to use it but get stuck.

from extreme import Top
>>> Top
Top
>>> Top + 1
Top
>>> Top - 30
Top
>>> Top > 1e99
True
>>> lst = range(10)
>>> lst[:Top]
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: slice indices must be integers or None

So this is where I am stuck. I need this Top value in
a context where it can be used as a start or stop value
in a slice. My idea was that since a stop value greater
than the length of lst in this context would simply return
a copy of lst, using Top in such a way should behave so
too. However I don't see a way of doing that.

So can someone provide ideas to get this behaviour?
If not is there a chance that PEP 326 gets revived?

-- 
Antoon Pardon


From vbgunz at gmail.com  Sat Sep 16 11:53:41 2006
From: vbgunz at gmail.com (vbgunz)
Date: 16 Sep 2006 08:53:41 -0700
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <1158420540.813155.135850@k70g2000cwa.googlegroups.com>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<1158420540.813155.135850@k70g2000cwa.googlegroups.com>
Message-ID: <1158422020.995631.61740@m7g2000cwm.googlegroups.com>

> > Has anyone tried this thing..
> > http://www.regular-expressions.info/regexbuddy.html

I use kodos http://kodos.sourceforge.net/. I firmly agree using a tool
like this to learn regular expressions will not only save you a
ridiculous amount of time spent on trial and error *but* it's really
easy and makes learning re a joy.

btw, kodos is specifically created with Python's re module in mind.
Good luck!



From george.sakkis at gmail.com  Fri Sep 15 16:38:31 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 15 Sep 2006 13:38:31 -0700
Subject: Coding Nested Loops
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
Message-ID: <1158352711.702301.156020@k70g2000cwa.googlegroups.com>

Peter Otten wrote:

> from itertools import count, izip, cycle, chain, repeat, starmap, imap
> from random import choice
>
> first =  ["X", "Y", "Z"]
> second = ["A", "B", "C"]
> second_count = [13, 14, 33]
> third = [1.1, 2.2, 3.3, 4.4]
>
> random_floats = imap(choice, repeat(third))
> columns = [
>     count(),
>     chain(*[repeat(i, 60) for i in first]),
>     cycle(chain(*starmap(repeat, izip(second, second_count))))
> ]
> columns.extend(repeat(random_floats, 28))
>
> for row in izip(*columns):
>     print row
>
> Now that is a nice occasion to get acquainted with the itertools module...

Wow, that's the most comprehensive example of itertools (ab)use I have
seen! Awesome!

George



From frank at chagford.com  Tue Sep 26 09:51:28 2006
From: frank at chagford.com (Frank Millman)
Date: 26 Sep 2006 06:51:28 -0700
Subject: odbc DbiDate date conversion
In-Reply-To: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
Message-ID: <1159278687.772964.245190@b28g2000cwb.googlegroups.com>


flupke wrote:
> I'm using a solid DB and i'm accessing it via the odbc module
> (activepython).
> I get a DbiDate object returned but i don't find a way to decently print
> it or get a format like %d/%m%/%y.
>

I convert it to a datetime() instance, like this -

    mydate = datetime.datetime.fromtimestamp(int(dbidate))

Then I can use all the functionality of the datetime module.

HTH

Frank Millman



From fakeaddress at nowhere.org  Fri Sep 15 07:17:47 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 15 Sep 2006 11:17:47 GMT
Subject: add without carry
In-Reply-To: <450a7e5c$0$14661$626a54ce@news.free.fr>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
	<450a7e5c$0$14661$626a54ce@news.free.fr>
Message-ID: <vZvOg.1389$6S3.308@newssvr25.news.prodigy.net>

Bruno Desthuilliers wrote:
> Bryan Olson wrote:
>> Hugh wrote:
>>> Sorry, here's an example...
>>>
>>> 5+7=12
>>>
>>> added without carrying, 5+7=2
>>>
>>> i.e the result is always less than 10
>> Are you looking for bitwise exclusive or? In Python it's
>> the '^' operator. For example:
>>
>>     print 5 ^ 7
>>
>>
>>>> 10 ^ 21
> 31
> 
> Not really "less than 10"...

I had little idea what he meant by that. My guess was that
no bit clear in an operand could be set in the result.
XOR is also known as mod-2 addition. It's what you get
if you add each bit independently, dropping carries, so
I thought it might be what he was looking for.
Unfortunately the bitwise mod-2 addition of 5 and 7 gives
the same result as mod-10 addition. Oh well.


-- 
--Bryan


From wolfgang.keller.nospam at gmx.de  Fri Sep  8 10:22:48 2006
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: Fri, 8 Sep 2006 16:22:48 +0200
Subject: Best Middle Tier Architechure?
References: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
Message-ID: <0001HW.C1274958000812C9F0407530@news.individual.de>

On Fri, 8 Sep 2006 03:59:46 +0200, Butternut Squash wrote
(in article <m84Mg.75899$5i3.66377 at bgtnsc04-news.ops.worldnet.att.net>):

> I have seen XML-RPC and
> soap.  Are there other options?

OmniORBpy

Sincerely,

Wolfgang Keller

-- 
My email-address is correct.
Do NOT remove ".nospam" to reply.



From google at mrabarnett.plus.com  Thu Sep 14 20:35:16 2006
From: google at mrabarnett.plus.com (MRAB)
Date: 14 Sep 2006 17:35:16 -0700
Subject: min() & max() vs sorted()
Message-ID: <1158280516.219493.61600@p79g2000cwp.googlegroups.com>

Hi,

Some time after reading about Python 2.5 and how the built-in functions
'min' and 'max' will be getting a new 'key' argument, I wondered how
they would treat those cases where the keys were the same, for example:

L = ["four", "five"]
print min(L, key = len), max(L, key = len)

The result is:

('four', 'four')

I would've thought that min(...) should return the same as
sorted(...)[0] (which it does) and that max(...) should return the same
as sorted(...)[-1] (which it doesn't).

I think that's just down to a subtlety in the way that 'max' is written.



From larry.bates at websafe.com  Thu Sep 21 09:31:18 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 21 Sep 2006 08:31:18 -0500
Subject: Trying to run an external program
In-Reply-To: <mailman.357.1158793513.10491.python-list@python.org>
References: <mailman.357.1158793513.10491.python-list@python.org>
Message-ID: <45129426.6060200@websafe.com>

Brant Sears wrote:
> Hi. I'm new to Python and I am trying to use the latest release (2.5) on
> Windows XP.
> 
> What I want to do is execute a program and have the results of the
> execution assigned to a variable. According to the documentation the way
> to do this is as follows:
> 
> import commands
> x = commands.getstatusoutput('dir')
> 
> This should assign "x" to be the output of the command "dir". However,
> when I run this (or any other command), x ends up being:
> 
> (1, "'{' is not recognized as an internal or external command,\noperable
> program or batch file.")
> 
> From looking through the documentation, I'm believing that the
> implementation of commands.getstatusoutput is actually some multi-step
> thing that starts with issuing the bracket character that is being
> choked on. This leads me to believe that Python or perhaps just the
> commands module is not setup correctly on my computer.
> 
> I installed Python using the Python2-5.msi link that I found at:
> http://www.python.org/download/releases/2.5/
> 
> I left everything the default during installation, so Python was
> installed to C:\Python25. The only other thing I did was add this PATH
> variable on my computer.
> 
> Any ideas on what I might do to troubleshoot this?
> 
> Thanks!
> 
> Brant Sears

Others have answered your specific question, but on a more general note:

If you want directory information use os.listdir or glob.glob instead.
No reason to shell out to do a dir.  If you were using dir as an example,
please disregard.

-Larry Bates


From maxm at mxm.dk  Tue Sep 12 04:08:49 2006
From: maxm at mxm.dk (Max M)
Date: Tue, 12 Sep 2006 10:08:49 +0200
Subject: Problems with email.Generator.Generator
In-Reply-To: <mailman.299.1158015822.5279.python-list@python.org>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>	<ee4cam$g9a$03$1@news.t-online.com>	<4505CAA1.9090102@simplistix.co.uk>	<4505D782.3010105@simplistix.co.uk>
	<mailman.299.1158015822.5279.python-list@python.org>
Message-ID: <45066B11.9040903@mxm.dk>

Chris Withers wrote:
> Chris Withers wrote:
>> print msg.as_string()
>>
>> MIME-Version: 1.0
>> Content-Type: text/plain; charset; charset="utf-8"
>                             ^^^^^^^
> Actually, even this isn't correct as you can see above...
> 
>> charset = Charset('utf-8')
>> msg = MIMEText('','plain',None)
>> msg.set_payload(u'Some text with chars that need encoding:\xa3',charset)

> Has no-one ever successfully generated a correctly formatted email with 
> email.MIMEText where the message includes non-ascii characters?!

What is the problem with encoding the message as utf-8 before setting 
the payload? That has always worked for me.


pl = u'Some text with chars that need encoding:\xa3'.encode('utf-8')
msg.set_payload(pl ,charset)

 From the docs:

"""
The payload is either a string in the case of simple message objects or 
a list of Message objects for MIME container documents (e.g. multipart/* 
and message/rfc822)
"""

Message objects are always encoded strings. I don't remember seeing that 
it should be possible to use a unicode string as a message.

The charset passed in set_payload(pl ,charset) is the charset the the 
string *is* encoded in. Not the charset it *should* be encoded in.

-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science

Phone:  +45 66 11 84 94
Mobile: +45 29 93 42 96


From hg at nospam.com  Mon Sep 25 15:16:31 2006
From: hg at nospam.com (hg)
Date: Mon, 25 Sep 2006 14:16:31 -0500
Subject: ruby %w equivalent
In-Reply-To: <mailman.545.1159136157.10491.python-list@python.org>
References: <mailman.545.1159136157.10491.python-list@python.org>
Message-ID: <91WRg.4780$Go3.2318@dukeread05>

Antoine De Groote wrote:
> Hi everybody,
> 
> is there a python equivalent for the ruby %w operator?
> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
> 
> Thanks a lot
> Regards,
> antoine

Why would they want to make such an obscure API ? ... didn't they have
Python to learn from (I am truly amazed - nothing cynical ...just ...
why ?!!!!)


From robert.kern at gmail.com  Sat Sep 23 17:04:18 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 16:04:18 -0500
Subject: Reverse a String?
In-Reply-To: <312cfe2b0609231402y4241d7cep36f1a4a73a82ead8@mail.gmail.com>
References: <312cfe2b0609231402y4241d7cep36f1a4a73a82ead8@mail.gmail.com>
Message-ID: <ef47ge$qvb$1@sea.gmane.org>

Gregory Pi?ero wrote:
> Is my mind playing tricks on me? I really remember being able to
> reverse a string as in:
> 
> text='greg'
> print text.reverse()
>>> 'gerg'
> 
> Is it possible thats in some Python install and not in others?  I just
> switched to linux.
> 
> In any case, can we get that added?

Not in that form, no, since this already exists:

   text[::-1]

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From python.list at tim.thechases.com  Mon Sep  4 10:03:52 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 04 Sep 2006 09:03:52 -0500
Subject: methods and functions, instances and classes
In-Reply-To: <y%VKg.3084$%k5.2240@trnddc08>
References: <y%VKg.3084$%k5.2240@trnddc08>
Message-ID: <44FC3248.5020302@tim.thechases.com>

> When I create an instance of a class,
> are the class's functions *copied* to create the methods?
> Or are method calls actually calls of the class's functions?
> 
> I am sure this is both obvious and FAQ,
> but I did not find a clear answer

The best way to find out is to try it:

#######################################
class Foo(object):
	def hello(self):
		return "Foo::hello"

f1 = Foo()

print f1.hello()
Foo.hello = lambda self: "new hello!"
print f1.hello()

#######################################

 From what I see of this evidence, "method calls [are] actually 
calls of the class's functions", not copied.

-tkc








From oripel at gmail.com  Sun Sep 10 17:42:48 2006
From: oripel at gmail.com (oripel)
Date: 10 Sep 2006 14:42:48 -0700
Subject: get the en of a program running in background
In-Reply-To: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>
References: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>
Message-ID: <1157924568.562057.317380@e3g2000cwe.googlegroups.com>

Module 'subprocess' may be a better fit for you than fork+exec.
Here's an example with a signal handler
(1) use subprocess, don't fork and exec
(2) maybe this will help:

---
import signal, subprocess

# define the signal handler
def logsignal(signum, frame):
   print "Caught signal"

# register the signal handler for SIGCHLD
signal.signal(signal.SIGCHLD, logsignal)

# run the subprocess in the background
subprocess.Popen(["sleep", "3"])

# Do more stuff
---

The signal handler will be called when the child process ends. Just
register your own handler.

You only need to register the handler once.
If you need this for a single run only, or need different behavior for
different subprocesses, have your signal handler re-register the old
handler (see the docs for module 'signal').

A note about the example: if you run it as is, the parent process will
end before the child process does. Add a call to 'os.wait()' to have it
wait for the child. In your GUI you probably won't want it.

Hope this helps.

awalter1 wrote:
> Hi,
> I develop a graphical user interface (with pyGTK) where a click on a
> button shall launch a program P in background. I want to get the end of
> this program P but I don't want that my HMI be freezed while P is
> running.
> I try to use fork examplesI found on the web, but it seems to not run
> as expected.
> I am not familiar with these techniques in unix as well as python.
> But I suppose that my needs are usual, despite that I don't find
> anything on the web ...
> Is someone can give me a standard way to call a background program,
> wait its end, with an IHM still active ?
> 
> Thank a lot for any idea.



From steve at holdenweb.com  Tue Sep 19 09:29:29 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 09:29:29 -0400
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <e69d3ed20609190606y3351e0e7s56ccc7db58d13b0d@mail.gmail.com>
References: <450FDFD6.5050601@gmail.com> <eeop6s$j0$2@sea.gmane.org>
	<e69d3ed20609190606y3351e0e7s56ccc7db58d13b0d@mail.gmail.com>
Message-ID: <eeoraa$afh$1@sea.gmane.org>

Anthony Baxter wrote:
>>More recent versions of Python have incorporated much more support for
>>64-bit architectures. 2.5 is about to be released (I believe it should
>>be out in the next 24 hours), and I'd recommend that over the older
>>version you are considering.
> 
> 
> If by "24 hours" you mean "20 minutes ago", this is entirely correct <wink>

:-)
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From deets at nospam.web.de  Thu Sep 21 09:11:07 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 21 Sep 2006 15:11:07 +0200
Subject: Python and CORBA
References: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
	<op.tf727isjrqur0o@eb.pragmadev>
	<1158836775.901518.85790@d34g2000cwd.googlegroups.com>
Message-ID: <4nfhbbFa28jqU1@uni-berlin.de>

rodmc wrote:

> Thanks to everyone for their help. I had tried OmniORB and while the
> base library worked ok, the Python bit OmniORBpy seems to dislike
> working... Perhaps there is something wrong with my settings.

Omniorb is very actively developed, try and post your problems on the
mailing list:

http://www.omniorb-support.com/mailman/listinfo/omniorb-list

AFAIK Fnorb also had license issues - I'm not entirely sure of that, but
better check it.

Diez


From tim at tdw.net  Fri Sep 15 21:28:58 2006
From: tim at tdw.net (Tim Williams)
Date: Sat, 16 Sep 2006 02:28:58 +0100
Subject: mp3 libs and programs
In-Reply-To: <R52467755.195.487.1@mx-extra>
References: <R52467755.195.487.1@mx-extra>
Message-ID: <9afea2ac0609151828w40cfe777g61a2854ebee6c48c@mail.gmail.com>

On 15 Sep 2006 18:16:41 -0700, Jay <jaysherby at gmail.com> wrote:
> I'm writing a python script that involves playing mp3 files.  The first
> approach I had was sending commands to unix command-line programs in
> order to play them.  I tired mpg123 and moosic, but there was a key
> feature to my program's success that's missing.  SEEK!  I need to be
> able to start playing a song at an arbitrary point in the song.  I
> can't find anything to let me do this.  Does anyone have any advice or
> has anyone needed something similar?

http://pymedia.org/   maybe

:)


From sjmachin at lexicon.net  Wed Sep 20 05:51:41 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 02:51:41 -0700
Subject: Installing 2.5 with 2.4?
In-Reply-To: <Xns98445B5ED4CD0duncanbooth@127.0.0.1>
References: <AlTPg.2$1n3.27@news.tufts.edu>
	<1158681033.708546.132710@b28g2000cwb.googlegroups.com>
	<Xns98445B5ED4CD0duncanbooth@127.0.0.1>
Message-ID: <1158745901.683169.148680@k70g2000cwa.googlegroups.com>


Duncan Booth wrote:
> "John Machin" <sjmachin at lexicon.net> wrote:
>
> > 1. You need to set your path manually. A BAT file called pypath.bat
> > placed somewhere on your PATH and containing:
> >     path c:\python%1;c:\python%1\scripts;%path%
> > might come in handy. Warning: this is best used once each time you open
> > up a command window; it's cumulative (Windows is not smart enough to
> > remove duplicate entries) and there is a an upper limit (I believe) on
> > the size of the PATH.
>
> Windows is only smart enough to avoid duplicate entries if you tell it
> to do that. e.g.
>
> PATH c:\python25;c:\python25\scripts;%PATH:c:\python25;c:\python25\scripts;=%
>
> will add the two Python 2.5 folders to the head of the path without
> duplicating them.

Wow .. I didn't know that! What's the syntax? Something like
%variablename[:oldtext=[newtext]]%
?
Where is this documented?



From mail at microcorp.co.za  Sat Sep  9 04:41:19 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 9 Sep 2006 10:41:19 +0200
Subject: Tkinter listbox:get
References: <1157648718.742353.299980@m73g2000cwd.googlegroups.com>
	<mailman.156.1157707310.5279.python-list@python.org>
	<1157715905.749313.302010@e3g2000cwe.googlegroups.com>
Message-ID: <020201c6d3eb$db1fafa0$03000080@hendrik>

 <vedran_dekovic at yahoo.com> wrote in email:


| Hi,and sorry I forget tell you what I want exactly.
|
| My problem is
|
| example:
|
| when I write like you tell me:
|
| >>> idx=lb.curselection()
| >>> StringValue=lb.get(idx)   <======= This


|
| ....THEN,ERROR IS:
|
| Traceback (most recent call last):
|   File "<pyshell#18>", line 1, in -toplevel-
|     StringValue=b.get(idx)       <========== is not the same as this



|   File "C:\Python24\lib\lib-tk\Tkinter.py", line 2432, in get
|     return self.tk.call(self._w, 'get', first)
| TclError: bad listbox index "": must be active, anchor, end, @x,y, or a
| number
|
| ...which index I must write to listbox get just clicked row.
|
|
| THANKS!!!!!!!!
|

Just use the print statement to see what is going on - use :

print idx

after getting the idx with the curselection - it must be the number of the row
that
was clicked

- Hendrik





From thorsten at thorstenkampe.de  Mon Sep 11 14:00:28 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Mon, 11 Sep 2006 19:00:28 +0100
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
	<ee3vme$cjj$1@panix3.panix.com>
Message-ID: <65sk091eu0l3.axwa5wrm2dtq.dlg@40tude.net>

* Aahz (2006-09-11 16:34 +0100)
> In article <4505707E.2080804 at redlinepy.com>,
> Paul Watson  <pwatson at redlinepy.com> wrote:
>>David Isaac wrote:
>>>
>>> I have no experience with database applications.
>>> This database will likely hold only a few hundred items,
>>> including both textfiles and binary files.
>>> 
>>> I would like a pure Python solution to the extent reasonable.
>>> 
>>> Suggestions?
>>
>>If you want really simple, look at the anydbm module.  If nothing better 
>>is available, anydbm will use dumbdbm.  All of these are in the Python 
>>build, so you do not need to fetch/read/install anything additional.
>>
>>Doing the DB-API would be much stronger, but might be overkill in your 
>>situation.
> 
> Once Python 2.5 comes out, I recommend using sqlite because it avoids
> the mess that dbm can cause.

But sqlite is not "pure Python" because it's just a wrapper around
sqlite (which has to be installed separately)...

Thorsten


From sturlamolden at yahoo.no  Thu Sep 28 16:39:44 2006
From: sturlamolden at yahoo.no (sturlamolden)
Date: 28 Sep 2006 13:39:44 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.878.1159449832.10491.python-list@python.org>
References: <mailman.1984.1159445104.10490.python-list@python.org>
	<mailman.878.1159449832.10491.python-list@python.org>
Message-ID: <1159475984.109684.227700@h48g2000cwc.googlegroups.com>


Brendon Towle wrote:

> ? (cons <item> <list>)
>
> returns a single level list, with <item> as its new first item, and
> the original contents of <list> as the remainder of the list. The
> OP's code doesn't do that; it returns a list of two items, with
> <list> as the second item.

That is equivalent, as <list> is the remainder of the list. By list I
mean the resulting chained data structure, not the Python list as it is
an array.

> To put it another way, the following code is always true in Lisp:
>
> ? (= (length (cons <item> <list>)) (1+ (length <list>)))
>
> But the OP's code only allows that to be true when <list> is of
> length 1.

That is indeed a discrepancy.



> I suppose, of course, that you could claim that the following Lisp list:
>
>    (1 2 3 4)
>
> should translate into the following Python list:
>
>    [1, [2, [3, [4]]]]
>
> But, I think that's a bit silly.

It is not at all silly. Let us look at how these lists are stored in
memory. (Use a fixed size font like courier.) First the Lisp list (1 2
3 4):

(car,cdr)
  |   |
  1  (car,cdr)
       |   |
       2  (car,cdr)
            |   |
            3  (car,cdr)
                 |   |
                 4   nil

Here, car is a reference to the number, cdr is a reference to the
remainder of the list.

Now look at the Python "list" [1, [2, [3, [4,null]]]]. Again, car is a
reference to the value, cons is a reference to the remainder of the
list.

[car,cdr]
  |   |
  1  [car,cdr]
       |   |
       2  [car,cdr]
            |   |
            3  [car,cdr]
                 |   |
                 4   null

You can see that they are indeed equivalent. In Lisp you have a pair of
references, lets call them car and cdr, one pointing to the value the
other to the remainder of the list. In Python you have the exactly same
thing.

The original poster was asking about using Python for teaching data
structures and algorithms. Chaining together elements in e.g. a linked
list or a binary tree is elementary concepts. This shows how it can be
done in Python without having to define "classes" for the data
stuctures as one would in Java or (Heaven forbid) C++.

Thus I stand by my original claim. Essentlially:

def cons(car,cdr): return (car,cdr) # or [car,cdr]
def car(cons): return cons[0]
def cdr(cons): return cons[1]



From onurb at xiludom.gro  Fri Sep  1 04:51:39 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 10:51:39 +0200
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <mailman.10227.1157079964.27775.python-list@python.org>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<mailman.10227.1157079964.27775.python-list@python.org>
Message-ID: <44f7f49c$0$2809$626a54ce@news.free.fr>

Jorge Vargas wrote:
> On 8/31/06, John Salerno <johnjsal at nospamgmail.com> wrote:
>> Are there any major differences between these two? It seems they can
>> both be used with TurboGears, and SQLAlchemy with Django. I'm just
>> wondering what everyone's preference is, and why, and if there are even
>> more choices for ORM.
>>
> they use two approach to the same problem.

I do not agree here. SLQObject tries to use a RDBMS for object
persistance, while SQLAlchemy's main goal is to provide a better
integration of RDBMS into Python - ORM features being just an optional
facility.

> SO tries to tide each object to a table while
> SA lets you do the mapping.
> 
> so each one has it's pros and cons.
> 
> for example SA wins at using an existing db
> but SO wins at not worring about the db structure

Not worrying about the db structure ? Heck, why using a RDBMS then - if
what you want is object persistance, ZODB works just fine.

SQLAlchemy clearly exposes the RDBMS schema (you can either define the
schema in Python or use reflection), and gives you access to the full
power of SQL DBMS without having to do the embed-SQL-as-strings dance.

(snip)

> In my experience SO is great for new projects
>  and if you don't want to
> mess/optimize with the actual SQL queries (which is great for an ORM
> because IMO that is the main goal of ORMing)

Disagreement here too. Even for relatively simple new projects,
SQLObject can be far too limited to take advantage of relational
paradigm. Try managing valued many-to-many associations with SQLObject -
which is a pretty simple and common requirement, and certainly not
"messing with the db".

SQLObject, while being a much better piece of software than what I could
come with by myself (been here, done that...), is IMVHO a wrong
solution. I mean, a RDBMS is not a persistence engine, it's a data
management tool. If you don't need a relational model, or if it doesn't
match your app's needs, then why use one when we have great OODBMS in
Python ?

My 2 cents...
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From breakfastea at gmail.com  Thu Sep 21 12:28:31 2006
From: breakfastea at gmail.com (breakfastea at gmail.com)
Date: 21 Sep 2006 09:28:31 -0700
Subject: How to return an "not string' error in function?
In-Reply-To: <4512bcaf$0$609$636a55ce@news.free.fr>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
	<71oau3-vr5.ln1@lairds.us>
	<1158855308.877117.187050@b28g2000cwb.googlegroups.com>
	<4512bcaf$0$609$636a55ce@news.free.fr>
Message-ID: <1158856111.375288.216950@h48g2000cwc.googlegroups.com>

Thank you for your reminder:)

However I saw the split() function in the first place and that why I'm
trying write one myself:)

Peace

Bruno Desthuilliers wrote:
> breakfastea at gmail.com wrote:
> (OT : please dont top-post)
>
> > Thank you for your inputing which has been great inspirational:)
> >
> > What I tried to do is to write a string.split() module,
>
> So don't waste time:
>
> >>> "ab eced f aazaz".split()
> ['ab', 'eced', 'f', 'aazaz']
> >>> "ab-eced-ff-aazaz".split('-')
> ['ab', 'eced', 'ff', 'aazaz']
> >>>
>
>
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in 'onurb at xiludom.gro'.split('@')])"



From nogradi at gmail.com  Fri Sep 15 17:40:24 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Fri, 15 Sep 2006 23:40:24 +0200
Subject: something for itertools
Message-ID: <5f56302b0609151440w47efeeabq3d9d28fe43949aae@mail.gmail.com>

In a recent thread,
http://mail.python.org/pipermail/python-list/2006-September/361512.html,
a couple of very useful and enlightening itertools examples were given
and was wondering if my problem also can be solved in an elegant way
by itertools.

I have a bunch of tuples with varying lengths and would like to have
all of them the length of the maximal and pad with None's. So
something like

a = ( 1, 2, 3 )
b = ( 10, 20 )
c = ( 'x', 'y', 'z', 'e', 'f' )

should turn into

a = ( 1, 2, 3, None, None )
b = ( 10, 20, None, None, None )
c = ( 'x', 'y', 'z', 'e', 'f' )

Of course with some len( ) calls and loops this can be solved but
something tells me there is a simple itertools-like solution.

Any ideas?


From fredrik at pythonware.com  Sat Sep 23 14:26:48 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 23 Sep 2006 20:26:48 +0200
Subject: no-installation version of python
In-Reply-To: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
References: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
Message-ID: <ef3u97$3gn$1@sea.gmane.org>

mr.porteiro.head at gmail.com wrote:

> Is there a stand-alone version of python out there that I can package
> with my scripts so that I don't have to bother with something like
> py2exe?

why not just ship the standard python interpreter with your applications?

just make a copy of the c:\python24 (or 25) installation directory, and 
add your scripts and the Python core DLL (which is usually installed 
under c:\windows\system32\python24.dll (or 25) to it.

you may want to tweak your code to explicitly set sys.path to something 
nice, so that global PYTHONPATH settings (etc) won't interfere with your 
application.  for extra bonus points, remove the stuff your application 
doesn't need.

or you could just use py2exe.

or if you just want EXE files that you can use with an existing Python 
install, use exemaker:

     http://effbot.org/zone/exemaker.htm

</F>



From jason at tishler.net  Wed Sep 13 08:05:36 2006
From: jason at tishler.net (Jason Tishler)
Date: Wed, 13 Sep 2006 08:05:36 -0400
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <soQNg.750$TV3.195@newssvr21.news.prodigy.com>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>
	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>
	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>
Message-ID: <20060913120536.GA432@tishler.net>

Dave,

On Wed, Sep 13, 2006 at 09:42:48AM +0000, David J. Braden wrote:
> Thorsten Kampe wrote:
> > * David J. Braden (2006-09-12 18:35 +0100)
> >> I can run Python in command-line mode fine from the cygwin shell;
> >> the cygwin distribution also includes IDLE, which is apparently
> >> completely installed, yet I am unable to get IDLE running. When I
> >> double-click idle.bat (or idle.pyw) I am prompted to locate the
> >> program's creator.  Darn if I know what it is. If I try to invoke
> >> IDLE from cygwen bash, I get "unable to remap
> >> c:\cygwin\bin\tk84.dll to same address as parent".
> > 
> > rebaseall
> >  
> [snip]
> 
> Thanks, Thorsten. I assume you mean type in "idle rebaseall" (?) -
> seems to bring up a window for a split second, then come back with
> same error messages I had before. I cannot find in the IDLE doc any
> reference on how to get it going under cygwin; could you please point
> me towards a less-than-terse set of instructions?

Here's another terse response:

    http://www.google.com/search?hl=en&q=unable+remap+same+address+parent&btnG=Google+Search

:,)

The following are excerpts from the rebase README:

    The rebaseall utility is a convenient way for users that suffer from
    the Cygwin rebase problem to rebase their entire system (i.e., all
    of their DLLs).  The following is a list of known Cygwin
    applications that are affected by the rebase problem:

        Apache
        Perl
        Python

    The rebase problem is due to fork() failing when it is unable to
    load DLLs in the child at the same address as in the parent.  This
    is caused by DLLs which have conflicting base addresses.  An error
    message like the following will be displayed when the problem is
    triggered:

        C:\cygwin\bin\python.exe: *** unable to remap C:\cygwin\bin\cygssl.dll
        to same address as parent(0xDF0000) != 0xE00000

    Use the following procedure to rebase your entire system:

        1. shutdown all Cygwin processes and services
        2. start ash (do not use bash or rxvt)
        3. execute /bin/rebaseall (in the ash window)

BTW, idle has problems running under Cygwin Python:

    http://sf.net/tracker/?func=detail&atid=105470&aid=786827&group_id=5470

Jason

-- 
PGP/GPG Key: http://www.tishler.net/jason/pubkey.asc or key servers
Fingerprint: 7A73 1405 7F2B E669 C19D  8784 1AFD E4CC ECF4 8EF6


From polychrom at softhome.net  Sat Sep 23 15:24:58 2006
From: polychrom at softhome.net (mistral)
Date: 23 Sep 2006 12:24:58 -0700
Subject: Need compile python code
In-Reply-To: <1159038731.703945.18300@d34g2000cwd.googlegroups.com>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
Message-ID: <1159039498.616908.88550@d34g2000cwd.googlegroups.com>


MonkeeSage wrote:
> mistral wrote:
> > this not work for me, show compilation error.  Is there simple way
> > compile pythone file? its absolutely unclear with command line. Just
> > show me exact command I need run(from python interactive shell?)
>
> OK...
>
> # cd to where the file.py is
> $ cd /some/dir
>
> # start python interactively, enable optimized compiling
> $ python -O
> ...
>
> # import your file.py -- if this doesn't work then
> # your file has errors and will not compile --
> # if it works then your file is now compiled --
> # file.pyo should now exist with file.py
> >>> import file
>
> # you can also do it explicitly --
> # import the compiler
> >>> import py_compile
> >>> py_compiler.compile('file.py')
>
> If that still doesn't work, show us the error, or we can't help you
> very easily.
>
> Regards,
> Jordan
---

No, something is wrong there. what I need is just compile one python
file which will generate html page, with parameters:
"exec" "python" "-O" "$0" "$@"

 just need simple way do this(script is correct), i will not set any
patches anywhere, can i do this wrom normal GUI?



From westymatt at gmail.com  Tue Sep  5 14:12:08 2006
From: westymatt at gmail.com (matt westerburg)
Date: Tue, 5 Sep 2006 14:12:08 -0400
Subject: threading
Message-ID: <4b490f2f0609051112n150c0141ge4953ebaaffad060@mail.gmail.com>

>From what I understand in order to guarantee thread safety Python implements
an Global Interpreter Lock. Which removes the concurrency, but provides
thread safety. Is Python 2.4 still like this and if I used Python to handle
rpc requests and responses would it be efficient in a multithreaded sense.
Always listen while another thread sends responses?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20060905/bd124026/attachment.html>

From cliff at develix.com  Mon Sep 25 23:51:30 2006
From: cliff at develix.com (Cliff Wells)
Date: Mon, 25 Sep 2006 20:51:30 -0700
Subject: Python extensions on Win32
Message-ID: <1159242690.32012.18.camel@devilbox>

For various sundry reasons, I find myself needing to deliver a
Windows-based Python app.  I also chose Python 2.5 for this platform.

The app has several requirements, all of which are available for Python
2.5/Win32 except one: pycurl.  So I decided to try building the source
but as it turns out, building C programs on Windows isn't nearly as
straightforward as on Linux, so I'm a bit lost.

I've downloaded the free Visual C++ Studio 2005, the pycurl sources (and
the requisite curl libs, etc), but pycurl insists I don't have a C
compiler compatible with VC++ 2003 (which I'm assuming is what Python
2.5 is built with).

So, for anyone who might know:

1) Is VC++ 2005 compatible with VC++ 2003?  If not, how can someone
acquire VC++ 2003 (aside from thepiratebay.org)?  The Microsoft site
seems to be a dead end here unless you've put out for a spendy MSDN
subscription.

2) If it is compatible, is there some specific incantation needed (env
variables, etc) to make pycurl use it?

3) If this is a dead-end, will mingw32 work instead (the error message
from pycurl implies it might, but I have doubts)?  Or will this only
work with the cygwin version of Python?

4) How much alcohol will be required to forget all this when I'm done?


Thanks,
Cliff

-- 



From ptmcg at austin.rr._bogus_.com  Tue Sep 12 10:12:13 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Tue, 12 Sep 2006 14:12:13 GMT
Subject: "filtered view" upon lists?
References: <mailman.337.1158062350.5279.python-list@python.org>
	<878xkpb5wa.fsf@gmail.com>
Message-ID: <1fzNg.17448$o42.5298@tornado.texas.rr.com>

"Jorge Godoy" <jgodoy at gmail.com> wrote in message 
news:878xkpb5wa.fsf at gmail.com...
> Wildemar Wildenburger <wildemar at freakmail.de> writes:
>
>> I don't know how else to call what I'm currently implementing: An object 
>> that
>> behaves like a list but doesn't store it's own items but rather pulls 
>> them
>> from a larger list (if they match a certain criterion).
>> Changes to the filter are instantly reflected in the underlying list.
>> Clear enough?
>
> It looks like you're implementing a callable to me.  This is a method that
> returns results based on some input -- here your original list and filter.
>
> Then you'll use this method wherever you need that filtered list.
>
>> Ok, so I figured that this is generic enough to be found in some standard
>> module already (I've had this often enough: Painfully implementing s/th 
>> and
>> then finding it in the libs some weeks later.).
>
> I don't believe it is generic.  Nobody knows your data specs or filtering
> needs.
>
>> Any pointers?
>
> Use of list comprehension might make it easier to code this:
>
>
> def myCallable(my_list, filter):
>    filtered_list = [(item) for item in my_list if filter(item)]
>    return filtered_list
>
>
> Example of full code:
>
>>>> test_list = range(10)
>>>> filter = lambda x: not x%2
>>>> def myCallable(list, filter):
> ...     filtered_list = [(item) for item in list if filter(item)]
> ...     return filtered_list
> ...
>>>> myCallable(test_list, filter)
> [0, 2, 4, 6, 8]
>>>> for item in myCallable(test_list, filter):
> ...     print "See?  I'm", item
> ...
> See?  I'm 0
> See?  I'm 2
> See?  I'm 4
> See?  I'm 6
> See?  I'm 8
>>>>
>
>
> -- 
> Jorge Godoy      <jgodoy at gmail.com>

Functionally-speaking, there is the filter built-in that does this same 
thing:

>>> data = range(10)
>>> odds = filter(lambda x : x % 2, data)
>>> evens = filter(lambda x : x % 2 != 1, data)
>>> odds
[1, 3, 5, 7, 9]
>>> evens
[0, 2, 4, 6, 8]


-- Paul




From sjmachin at lexicon.net  Mon Sep 25 04:38:08 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 01:38:08 -0700
Subject: unicode, bytes redux
In-Reply-To: <7xwt7suzv8.fsf@ruckus.brouhaha.com>
References: <mailman.552.1159166294.10491.python-list@python.org>
	<7xy7s8crty.fsf@ruckus.brouhaha.com>
	<45178f23$0$19894$4d3efbfe@news.sover.net>
	<7xwt7suzv8.fsf@ruckus.brouhaha.com>
Message-ID: <1159173488.326443.245730@d34g2000cwd.googlegroups.com>


Paul Rubin wrote:
> Leif K-Brooks <eurleif at ecritters.biz> writes:
> > It requires a fairly large change to code and API for a relatively
> > uncommon problem. How often do you need to know how many bytes an
> > encoded Unicode string takes up without needing the encoded string
> > itself?
>
> Shrug. I don't see a real large change--the code would just check for
> an optional arg and process accordingly.  I don't know if the issue
> comes up often enough to be worth making such accomodations for.  I do
> know that we had an extensive newsgroup thread about it, from which
> this discussion came, but I haven't paid that much attention.

Actually, what Willie was concerned about was some cockamamie DBMS
which required to be fed Unicode, which it encoded as UTF-8, but
silently truncated if it was more than the n in varchar(n) ... or
something like that.

So all he needs is a boolean result: u.willitfit(encoding, width)

This can of course be optimised with simple early-loop-exit tests:
if n_bytes_so_far + n_remaining_uchars > width: return False
elif n_bytes_so_far + n_remaining_uchars * M <= width: return True
# where M is the maximum #bytes per Unicode char for the encoding
that's being used.

Tell you what, why don't you and Willie get together and write a PEP?

Cheers,
John



From steve at holdenweb.com  Sat Sep 30 10:53:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 15:53:22 +0100
Subject: Storing records from a parsed file
In-Reply-To: <1159619474.342225.319660@h48g2000cwc.googlegroups.com>
References: <1159619474.342225.319660@h48g2000cwc.googlegroups.com>
Message-ID: <eflsqt$3on$1@sea.gmane.org>

Ben wrote:
> Apologies if this is te wrong place to post -  I realise the question
> is pretty basic...
> 
> I have a simple python script that parses a text file and extracts data
> from it. Currently
> this data is stored in a list by  a function, each element of which is
> an instance of a class with
> member variables to take the data. So for example I have:
> 
> camera_list.append(camera(alpha,beta,gamma....))
> 
> where
> 
> class camera:
>      def __init__(self,name,site,address,text):
>          self.name=name
>          self.site=site
>          self.address=address
>          self.text=text
> 
> Every time I append an item to this list I pass in the constructor
> parameters so end up with all my data in the list which can then be
> accessed by doing myList[x].name (for example)
> 
> This seemed like  a nice solution until I tried to put the entire
> parsing program into its own class. I did this so that I could parse
> different types of file:
> 
> thistype.getdata()
> thattype.getdata()
> ....
> thisfile and thatfile would have the same function definitions, but
> different implementations as needed.
> 
> But now my list generating funtion needs to create inner "camera"
> classes when it is itself a member funcition of a class. This seems to
> be causing problems - I coudl possibly use nested dictionaries, but
> this sounds messy. Ideally I would use structs defined inside the
> outer class, but pythn doesn't seem to support these.
> 
> I hope I haven't rambled too much here - I'm new to python so have
> probably done some silly things :-)
> 
Sounds like a fairly simple problem, but just the kind to tax a beginner ...

I think you are mistaken in your belief that the camera classes have to 
be declared inside the file-handler classes: it's quite possible to 
declare them independently and use them anyway. Here's a class whose 
method creates an instance of another class and returns it (though it 
could of course just as easily return a list of such objects):

In [9]: class Camera1:
    ...:     def __init__(self, p1, p2):
    ...:         self.p1 = p1
    ...:         self.p2 = p2
    ...:

In [10]: class Camera2:
    ....:     def __init__(self, p1, p2):
    ....:         self.p1 = p1
    ....:         self.p2 = p2
    ....:

In [11]: class factory:
    ....:     def CreateCamera(self, x):
    ....:         if x == 1:
    ....:             return Camera1("a", "b")
    ....:         else:
    ....:             return Camera2("x", "y")
    ....:

In [12]: f = factory()

In [13]: c1 = f.CreateCamera(1)

In [14]: c2 = f.CreateCamera("something else")

In [15]: c1
Out[15]: <gs.model.Camera1 instance at 0x017E99E0>

In [16]: c2
Out[16]: <gs.model.Camera2 instance at 0x0180D940>

Does this help?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Tue Sep 26 12:10:45 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 18:10:45 +0200
Subject: identifying new not inherited methods
In-Reply-To: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
Message-ID: <efbje5$l5b$1@sea.gmane.org>

malkarouri at gmail.com wrote:

> I am writing a library in which I need to find the names of methods
> which are implemented in a class, rather than inherited from another
> class. To explain more, and to find if there is another way of doing
> it, here is what I want to do: I am defining two classes, say A and B,
> as:
> 
> class A(object):
>     def list_cmds(self):
>         'implementation needed'
>         ?
>     def __init__(self):
>     ... (rest of class)
> 
> class B(A):
>     def cmd1(self, args):
>         pass
>     def cmd2(self, args):
>         pass
> 
> I need an implementation of list_cmds in A above so that I can get a
> result:
> 
>>>> b=B()
>>>> b.list_cmds()
> ['cmd1','cmd2']                    #order not important
> 
> I will be happy if anybody can point to me any way of doing it, using
> class attributes, metaclasses or otherwise. What I don't want to do is
> modifying class B, which contains just the cmds, if possible.

assuming that you want *all* methods that starts with "cmd", from all 
classes (including any commands in class A), you can do

     def list_cmds(self):
	# get all names
	names = dir(self)
	# filter out the commands
	names = [name for name in names if name.startswith("cmd")]
	return names

if the command methods can have any arbitrary names, change the test to 
filter out the methods you're not interested in.  it's usually easier to 
make sure that all commands use a common name prefix, though.

and yes, if you haven't done so already, take a look at the "cmd" module 
before you build your own variant:

     http://effbot.org/librarybook/cmd.htm

hope this helps!

</F>



From agarwaengrc at blabla_yahoo.com.au  Sun Sep 24 18:58:32 2006
From: agarwaengrc at blabla_yahoo.com.au (dtlog)
Date: Mon, 25 Sep 2006 01:58:32 +0300
Subject: newbie IronPython compiled scripts speed question
References: <op.tgees50h3p2nzo@fafoi.lan>
	<1159133144.923369.209640@b28g2000cwb.googlegroups.com>
Message-ID: <op.tgenfu013p2nzo@fafoi.lan>

> Learning to use Psyco is very easy, for a basic usage you just have to
> put in your code:
> import psyco
> psyco.full()
>
> For a better usage you can do:
> psyco.bind(functioname)
> for just the functions that you have seen can enjoy the compilation.
>
> For a smart usage you can learn few tricks to help its job. The last
> page of the psyco manual helps.
>
> pyinline is rather easy to use if you have linux and you know C.

thanks, I'll check out psyco's documentation, since unfortunately the
scripts will be run on a Windows box, and using a compiler other than
VC++ is not an option... on that note, is there a tutorial/guide on
making python (and therefore pyinline) aware of the VC++ compiler
installed on the machine so it can be used for automatic compilation?
Is a change in some configuration file, or a call of some function needed?


From sjmachin at lexicon.net  Sat Sep  9 11:38:48 2006
From: sjmachin at lexicon.net (John Machin)
Date: 9 Sep 2006 08:38:48 -0700
Subject: Problem on getting various character set from pop3.retr
In-Reply-To: <1157770619.880545.290740@m79g2000cwm.googlegroups.com>
References: <1157770619.880545.290740@m79g2000cwm.googlegroups.com>
Message-ID: <1157816328.737200.172510@m73g2000cwd.googlegroups.com>


GM wrote:
> Dear all,
>
> The problem that I am facing now is that, when I use poplib to get a
> email message with chinese character set like big5, the character
> string is changed automatically to sth like =B8=D5=ACQ=AAM...the OS I
> am using is red hat ES4 and the python version I am using is 2.3.4 (it
> seems python 2.4 is not available for red hat). My application goal is
> to receive the email and convert all character set to UTF-8 and then
> store in file. So....long way to go for me, please give me some help
> for that, thx~
>

It's not being "changed automatically" at your end. It arrived like
that. Check out the Content-Transfer-Encoding: message header.

These may help:

http://en.wikipedia.org/wiki/Quoted-printable

http://docs.python.org/lib/module-quopri.html

http://docs.python.org/lib/module-email.html

Cheers,
John



From claird at lairds.us  Tue Sep 26 19:43:27 2006
From: claird at lairds.us (Cameron Laird)
Date: Tue, 26 Sep 2006 23:43:27 +0000
Subject: Running Python script from C++ code(.NET)
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
	<1159277151.292508.55360@i3g2000cwc.googlegroups.com>
Message-ID: <vhqou3-pg7.ln1@lairds.us>

In article <1159277151.292508.55360 at i3g2000cwc.googlegroups.com>,
volcano <Mark.Geyzer at gmail.com> wrote:
			.
			.
			.
>But here is another question for gurus: sometimes my script fails, and
>I cannot figure out why. OK, I can - especially since I terminate it
>with "sys.exit()", but I want my app to know too.
>"GetLastError" returns 0 - for the obvious reason that this is the
>value Python interpreter returns with. But how can I get the script
>return value?
>

Your question confuses me.  Do you realize Python can exit with

   sys.exit(0)
or
   sys.exit(1)

for example, to distinguish differenet exit conditions?  When 
you do these, GetLastError() will NOT always yield 0.


From steve at holdenweb.com  Mon Sep 11 11:50:25 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 16:50:25 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <45058250.9040102@simplistix.co.uk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>
	<45058250.9040102@simplistix.co.uk>
Message-ID: <ee40io$hno$1@sea.gmane.org>

Chris Withers wrote:
> Peter Otten wrote:
> 
>>http://sourceforge.net/tracker/?func=detail&aid=1409455&group_id=5470&atid=105470
>>
>>>Now, is this change to Generator.py in error or am I doing something
>>>wrong?
>>
>>I'm not familiar enough with the email package to answer that.
> 
> 
> I'm hoping someone around here is ;-)
> 
> 
>>>If the latter, how can I change my code such that it works as I'd expect?
>>
>>email.Generator and email.Message use cStringIO.StringIO internally, which
>>can't cope with unicode. A quick fix might be to monkey-patch:
> 
> 
> I'm not sure that's correct, but I'm happy to stand corrected.
> 
> My understanding is that the StringIO's don't mind as long as they type 
> is consistent - ie: con't mix unicode and encoded strings, 'cos it 
> forced python's default ascii codec to kick in and spew unicode errors.
> 
> Now, I want to know what I'm supposed to do when I have unicode source 
> and want it to end up as either a text/plain or text/html mime part.
> 
> Is there a how-to for this anywhere? The email package's docs are short 
> on examples involving charsets, unicode and the like :-(
> 
Well, it would seem like the easiest approach is to monkey-patch the use 
of cStringIO to StringIO as recommended and see if that fixes your 
problem. Wouldn't it?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From martin at v.loewis.de  Fri Sep 29 18:52:53 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 30 Sep 2006 00:52:53 +0200
Subject: Problems wth os.stat().st_mtime on Mac
In-Reply-To: <mailman.941.1159540123.10491.python-list@python.org>
References: <mailman.941.1159540123.10491.python-list@python.org>
Message-ID: <451DA3C5.8020407@v.loewis.de>

Michael Glassford schrieb:
> Although not mentioned in the Python 2.5 News, apparently there was a
> similar change on Mac that I'm having some problems with. On the Mac,
> just as on Windows, os.stat().st_mtime now returns a float instead of an
> integer.

It's isn't really new; os.stat_float_times was introduced in Python 2.3.
What changed in 2.5 is that it is now true. See

http://docs.python.org/whatsnew/modules.html

> a) Why the difference between machines?

You really have to delve into OSX to answer this question. Several
reasons are possible:
- there is a change in the operating system implementations
- you are using different Python versions
- you are using different file systems

> b) Why do most files on this machine have ".0", while some (generally
> those I created myself using Python 2.5, I think) don't?

Hard to tell. Maybe the software that created those files explicitly
set a time stamp on them, and failed to use the API that supports
subsecond resolution in setting those time stamps.

> I understand how the results can be different: the os.stat() function
> returns a posix.stat_result object, which gives back an integer value
> for the mtime if you call __str__ or __repr__, or if you iterate on it;
> and a float if you get the st_mtime attribute. But I would consider it a
> bug that the results are different: a float should be returned in either
> case.

That's for backwards compatibility: You shouldn't use the tuple
interface anymore, but use st_mtime for new code. This will always
be a float. OTOH, the tuple interface will continue to return
integers forever (or until the tuple interface is removed in Python
3000), as old applications will break. This breakage isn't theoretical:
when I introduced float into st_mtime, I first made the tuple be
float also, and it broke several applications within a week (even
though that code was just in the CVS trunk, and not released yet).

Regards,
Martin


From davidh at ilm.com  Tue Sep  5 16:49:57 2006
From: davidh at ilm.com (David Hirschfield)
Date: Tue, 05 Sep 2006 13:49:57 -0700
Subject: Getting text into the copy-paste buffer...
In-Reply-To: <229646fb0609051348x597f295dq33d5109e860e1e5f@mail.gmail.com>
References: <mailman.35.1157482463.5279.python-list@python.org>	
	<1157483910.308073.274710@h48g2000cwc.googlegroups.com>	
	<44FDE190.4080908@ilm.com>
	<229646fb0609051348x597f295dq33d5109e860e1e5f@mail.gmail.com>
Message-ID: <44FDE2F5.3040707@ilm.com>

Ah, indeed it does...my distro didn't have it, but a quick download and 
compile and there it is.

Thanks a bunch,
-Dave

Keith Dart wrote:
>
>
> On 9/5/06, *David Hirschfield* <davidh at ilm.com 
> <mailto:davidh at ilm.com>> wrote:
>
>     This is good info...but I'm looking for the opposite direction: I
>     want to place some arbitrary command output text into the
>     clipboard, not get the current selection out of the clipboard.
>
>     Any help on that end?
>     -Dave
>
>
>
> Oh, the same command works that direction also. Just use different 
> command line options.
>
> Your distro may already have it. Just install it and check it out.
>
>
>
>
>
> -- 
> -- ---------------------------------------------------------
> Keith Dart
> keith.dart at gmail.com <mailto:keith.dart at gmail.com>
> ============================== 

-- 
Presenting:
mediocre nebula.

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From bignose+hates-spam at benfinney.id.au  Tue Sep 19 19:40:38 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 20 Sep 2006 09:40:38 +1000
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
	<4n9n4iF99lbqU1@uni-berlin.de> <87k6402i62.fsf@benfinney.id.au>
	<20060919163146.GA5295@kateandchris.net>
Message-ID: <87fyen2znt.fsf@benfinney.id.au>

Chris Lambacher <chris at kateandchris.net> writes:

> On Tue, Sep 19, 2006 at 09:46:13PM +1000, Ben Finney wrote:
> > "Diez B. Roggisch" <deets at nospam.web.de> writes:
> > > Ben Finney schrieb:
> > > > My claim (and IANAL) is that it doesn't matter *what* license
> > > > Python is distributed under; unless you do something with Python
> > > > that is a right of the copyright holder, such as distributing part
> > > > or all of Python, the copyright license terms of Python have no
> > > > legal effect on what license you choose for your own work.
> > >
> > > Not true for the GPL. Part of python is the library, which you
> > > either use explicit (I can't imagine a program that doesn't, beyond
> > > print "hello world"), or implicit (sys and os are AFAIX used
> > > internally to bootstrap the interpreter)
> > 
> > And just about every program on a GNU/Linux system uses the libc
> > library, which is distributed under the GPL. That license *only*
> > affects works that are *derivative* of the libc library.
> Hmmm... The copyright file I have for GNU C Library looks to be LGPL:

True, that was a poorly chosen example.

There are many programs and libraries on a GNU/Linux system that are
licensed under the GPL. Programs that *derive from* them (by, for
instance, using their C header files as part of the program source)
must comply with the terms of the GPL. Programs that merely *use* that
functionality during execution are not affected by the GPL.

That latter case is the only one for most interpreted Python programs:
no part of the library is in the source code of the Python program, so
the license of that library doesn't affect the licensing of the
program.

Write your program in Python, and you can ignore the Python license
when you distribute your own work. We'd love to see you distribute it
under a free software license, but the license of Python has no legal
effect on your decision.

-- 
 \          "Time flies like an arrow. Fruit flies like a banana."  -- |
  `\                                                      Groucho Marx |
_o__)                                                                  |
Ben Finney



From steve at holdenweb.com  Tue Sep  5 03:00:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 08:00:32 +0100
Subject: newbie pipe question
In-Reply-To: <1157420035.525794.71510@74g2000cwt.googlegroups.com>
References: <1157420035.525794.71510@74g2000cwt.googlegroups.com>
Message-ID: <edj799$6n6$3@sea.gmane.org>

linuxnooby at yahoo.com.au wrote:
> Hi
> 
> I want to write a python script that accepts input ( a single line of
> text) from another program (squid proxy) and sends back output ( a
> single line of text). I am not sure how to go about this
> 
Traditionally one of the popenN() functions would have been the way to 
do this. Nowadays one might prefer the subprocess module's facilities.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From nil at dev.nul  Fri Sep  1 12:16:20 2006
From: nil at dev.nul (Christian Stapfer)
Date: Fri, 1 Sep 2006 18:16:20 +0200
Subject: Problem loading true-type font with PIL
References: <e3b9a$44f8597f$54482a8f$31423@news.hispeed.ch>
Message-ID: <c946d$44f85ce2$54482a8f$31995@news.hispeed.ch>

Christian Stapfer" <nil at dev.nul> wrote in message 
news:e3b9a$44f8597f$54482a8f$31423 at news.hispeed.ch...
> After switching from Python 2.3 to 2.4 (Enought),
                                          ^^^^^
I mean: Python Enthought Edition--Python 2.4.3 for Windows,
sorry for that.

I see in the documentation for PIL that an additional
module is needed: but I don't see where I can get
it from. I'd expected that the Python Enthought Edition
--Python 2.4.3 for *Windows* would include that module....

Regards,
Christian STapfer



From bignose+hates-spam at benfinney.id.au  Mon Sep 18 20:36:11 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 19 Sep 2006 10:36:11 +1000
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<een1ec$8uk$1@sea.gmane.org>
Message-ID: <87d59slmkk.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> beliavsky at aol.com wrote:
> > I think I read a suggestion somewhere to wrap the code where a
> > Python script starts in a main() function
> > [...]
> > What are the advantages of doing this?
> > 
> Guido van Rossum himself can tell you:
>    http://www.artima.com/forums/flat.jsp?forum=106&thread=4829

I read that one a while ago, and now have this in most of my programs:

    def __main__(argv=None):
        """ Perform the main function of this program """
        from sys import argv as sys_argv
        if argv is None:
            argv = sys_argv

        # preparation, e.g. set up environment

        exit_code = None
        try:
            do_the_main_thing(argv)  # or whatever the main step is
        except SystemError, e:
            exit_code = e.code

        return exit_code

    if __name__ == '__main__':
        import sys
        exit_code = __main__(sys.argv)
        sys.exit(exit_code)

This allows me to import my program as a module, and treat the main
routine as a function (argv as input, exit_code as output), while the
code itself can do sys.exit() without needing to know that it's
wrapped up in a function.

It also encourages me to write code inside do_the_main_thing() that
gets its environment parameterised as input, instead of specifying
sys.argv and the like. This makes the code much easier to unit test.

The name __main__ was chosen because I saw hints some time ago that
Python 3000 might automate some of these semantics for a function with
that name. True or false?

-- 
 \                "Crime is contagious ... if the government becomes a |
  `\    lawbreaker, it breeds contempt for the law."  -- Justice Louis |
_o__)                                                         Brandeis |
Ben Finney



From jan.dries at dcube-resource.be  Sat Sep 30 12:58:06 2006
From: jan.dries at dcube-resource.be (Jan Dries)
Date: Sat, 30 Sep 2006 18:58:06 +0200
Subject: MySQLdb for Python 2.5
In-Reply-To: <451e25f3$0$25620$9b622d9e@news.freenet.de>
References: <5_ednYPtY9vSSoDYnZ2dnUVZ_rqdnZ2d@insightbb.com>
	<451e25f3$0$25620$9b622d9e@news.freenet.de>
Message-ID: <451EA21E.90603@dcube-resource.be>

Martin v. L?wis wrote:
> Harold Trammel schrieb:
>> Does anyone know the status of a version of MySQLdb that will work with
>> Python 2.5? 
> 
> AFAICT, MySQLdb 1.2.1 builds and works just fine.
> 

Does anyone know if Windows binaries for 2.5 are available somewhere?

Regards,
Jan



From johnzenger at gmail.com  Tue Sep 26 13:31:27 2006
From: johnzenger at gmail.com (johnzenger at gmail.com)
Date: 26 Sep 2006 10:31:27 -0700
Subject: Splitting device addresses into parts
References: <efbl8h$kf2$03$1@news.t-online.com>
	<45195a2d$0$27565$626a54ce@news.free.fr>
	<efbn5h$ol2$03$1@news.t-online.com>
Message-ID: <1159291887.052173.264990@i3g2000cwc.googlegroups.com>

This may be a rare case where regular expressions are not a horrible,
self-defeating idea.  Something like:

delimiter = re.compile("[:\.]")
delimiter.split("PCI:2:3.0")
...and then ignore the first entry, and map int the rest.
Alternatively, if the delimiters can really be anything, and if there
are no numbers in the first space ("PCI"), then maybe this approach:

number = re.compile("\d+?")
number.findall("PCI:2:3.0")

Fabian Steiner wrote:
> Bruno Desthuilliers wrote:
> > Fabian Steiner wrote:
> >> I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
> >> need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
> >> simple way to achieve this? So far I am using regular expressions but I
> >> would like to avoid them ...
> >
> > devices = ["PCI:2:3.0", "PCI:3.4:0"]
> > for d in device:
> >   nums = tuple(map(int, d.split(':')[1:]))
> >   print "for ", d, " : ", nums
>
> Unfortunately, this doesn't work (even if I correct your typos) since
> the delimeter isn't necessary a colon - that's exactly the difficulty I
> am trying to solve.
> 
> Regards,
> Fabian Steiner



From fredrik at pythonware.com  Sun Sep  3 06:42:10 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 12:42:10 +0200
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <edcrms$auj$1@news.uit.no>
References: <edcrms$auj$1@news.uit.no>
Message-ID: <edebi2$oop$1@sea.gmane.org>

Tor Erik wrote:

> The reason is that my application does about 16 connects and data 
> transfers per second, to the same 16 remote hosts. After approx 200 secs 
> there are 4000 sockets waiting to be garbage collected by the OS.

what does "netstat" say about these sockets ?

</F>



From joel.hedlund at gmail.com  Fri Sep  1 14:59:03 2006
From: joel.hedlund at gmail.com (Joel Hedlund)
Date: Fri, 01 Sep 2006 20:59:03 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <1157134700.881039.131440@m73g2000cwd.googlegroups.com>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
	<1157134700.881039.131440@m73g2000cwd.googlegroups.com>
Message-ID: <ed9vmr$okk$1@news.lysator.liu.se>

> You might try doctests, they can be easier to write and fit into the
> unit test framework if needed.

While I firmly believe in keeping docs up to date, I don't think that 
doctests alone can solve the problem of maintaining data integrity in 
projects with more comlex interfaces (which is what I really meant to 
talk about. Sorry if my simplified examples led you to believe 
otherwise). For simple, deterministic functions like math.pow I think 
it's great, but for something like BaseHTTPServer... probably not. The 
__doc__'s required would be truly fascinating to behold. And probably 
voluminous and mostly unreadable for humans. Or is there something that 
I've misunderstood?

/Joel


From outstretchedarm at hotmail.com  Thu Sep  7 09:53:44 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 06:53:44 -0700
Subject: 3 Simple Questions About Python/IDLE
Message-ID: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>

1) why don't python / idle use numbered lines in their scripting, like
basic?  how do you keep track of large batches of code without them?

2) in IDLE, how do you save a program such that it can be run, say from
windows the "run" function?

3) are most of you doing your script editing in IDLE or something more
fully featured?

4) how are you importing previously written blocks of code into your
code?  cut and paste?  what is the best way to organize snippets of
code?

thanks, peeps



From gagsl-py at yahoo.com.ar  Fri Sep 29 04:27:05 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 29 Sep 2006 05:27:05 -0300
Subject: How to find number of characters in a unicode string?
In-Reply-To: <efija1$357$1@lust.ihug.co.nz>
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
	<pan.2006.09.18.20.29.20.510034@gmx.net>
	<efija1$357$1@lust.ihug.co.nz>
Message-ID: <7.0.1.0.0.20060929051425.01fa8258@yahoo.com.ar>

At Friday 29/9/2006 04:52, Lawrence D'Oliveiro wrote:

> >> Is there a way to calculate in characters
> >> and not in bytes to represent the characters.
> >
> > Decode the byte string and use `len()` on the unicode string.
>
>Hmmm, for some reason
>
>     len(u"C\u0327")
>
>returns 2.

That's correct, these are two unicode characters, 
C and combining-cedilla; display as ?. From 
<http://en.wikipedia.org/wiki/Unicode>:

"Unicode takes the role of providing a unique 
code point ? a number, not a glyph ? for each 
character. In other words, Unicode represents a 
character in an abstract way, and leaves the 
visual rendering (size, shape, font or style) to 
other software [...] This simple aim becomes 
complicated, however, by concessions made by 
Unicode's designers, in the hope of encouraging a 
more rapid adoption of Unicode. [...] A lot of 
essentially identical characters were encoded 
multiple times at different code points to 
preserve distinctions used by legacy encodings 
and therefore allow conversion from those 
encodings to Unicode (and back) without losing 
any information. [...] Also, while Unicode allows 
for combining characters, it also contains 
precomposed versions of most letter/diacritic 
combinations in normal use. These make conversion 
to and from legacy encodings simpler and allow 
applications to use Unicode as an internal text 
format without having to implement combining 
characters. For example ? can be represented in 
Unicode as U+0065 (Latin small letter e) followed 
by U+0301 (combining acute) but it can also be 
represented as the precomposed character U+00E9 
(Latin small letter e with acute)."

Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From __peter__ at web.de  Fri Sep 29 08:52:53 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 29 Sep 2006 14:52:53 +0200
Subject: Execute external code and get return value
References: <ze8Tg.128326$_J1.881759@twister2.libero.it>
Message-ID: <efj4rv$2fk$01$1@news.t-online.com>

Michele Petrazzo wrote:

> I want to execute an external code, that become from a text file (pe),
> call a function inside it and get its return value:

namespace = {}
execfile("ext_code.txt", namespace)
print namespace["funct2Call"]()

Peter


From herrekberg at users.sf.net  Sat Sep 16 10:42:26 2006
From: herrekberg at users.sf.net (Pontus Ekberg)
Date: Sat, 16 Sep 2006 16:42:26 +0200
Subject: Catching toplevel move and resize
References: <W9SOg.169$gh6.143@read3.inet.fi>
Message-ID: <pan.2006.09.16.14.42.26.888806@users.sf.net>

Tuomas wrote:

>  From a PyGTK component I would like to react moving and resizing the 
> toplevel window. I try to connect the toplevel 'frame-event' to my 
> callback, but the toplevel do not fire on moving or resizing. Any 
> suggestions?
> 
> Tuomas
> (Linux, Python 2.3, GTK 2.6.7)

You are probably looking for "configure_event".

// Pontus




From tim at tdw.net  Thu Sep 14 09:35:57 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 14 Sep 2006 14:35:57 +0100
Subject: Limitate speed of a socket-based data transferring
In-Reply-To: <R52334320.778.17309.1@mx-extra>
References: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>
	<R52334320.778.17309.1@mx-extra>
Message-ID: <9afea2ac0609140635x23a08897ua690cf9ae9912a96@mail.gmail.com>

On 14/09/06, Diez B. Roggisch <deets at nospam.web.de> wrote:
> billie schrieb:
> > Hi all. I'm writing a TCP-based application that I will use to trasfer
> > binary files through the network. This piece of code represents how do
> > I get a file from a remote peer and save it on my local hard drive:
> >
> > file_obj = open('downloaded.ext', 'wb')
> > while 1:
> >     buf = sock.recv(2048)
> >     if len(buf) == 0:
> >          break
> >     file_obj.write(buf)
> > file_obj.close()
> > sock.close()
> >
> > I would like to know how could be possible to limit the file transfer
> > speed (for example: don't write more than 50 Kb/sec).
> > Some ideas?
>
> If you are on unix, use trickle. If you must limit it from within your
> own code, I can only assume that computing the transfer rate so far and
> introducing timeouts might help - but I never did such a thing, nor do I
> know what that means for example for the  network stack.
>
> But maybe even then trickle may help you to get an idea, as it is a
> user-space program AFAIK. So they might have some information (at least
> the code... ) out there that could be of use.

You could wrap  buf = sock.recv(xxx) in a data counter and sleep loop
so that you burst to no more than 50KB/s average.

Completely untestest and for illustration only :)

file_obj = open('downloaded.ext', 'wb')
interval = 1.0 #  seconds  eg. 0.5 or 2.0
# smaller the interval, the less bursty and smoother the throughput
max_speed = 51200   # 50k * 1024 =  bytes
data_count = 0   # keep track of the amount of data transferred
time_next = time.time() + interval
while 1:
   buf = sock.recv(512) # smaller chunks = smoother, more accurate
   if len(buf) == 0:
        break
   data_count += len(buf)
   if data_count >= max_speed * interval:
       data_count = 0
       sleep_for =  time_next - time.time()
       if sleep_for > 0:
            time.sleep(sleep_for)
            time_next = time.time() + interval
   file_obj.write(buf)
file_obj.close()
sock.close()


From sjmachin at lexicon.net  Thu Sep 14 18:04:08 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 15:04:08 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
	<pan.2006.09.14.15.36.07.509974@gmx.net>
	<1158248572.373909.53420@d34g2000cwd.googlegroups.com>
Message-ID: <1158271447.901485.282570@p79g2000cwp.googlegroups.com>

Michael wrote:
> I guess, I still don't see how this will work. I'm receiving a C
> zero-terminated string in my Python program as a 1K byte block (UDP
> datagram). If the string sent was "abc", then what I receive in Python
> is <a><b><c><0><garbage><garbage>...<last_garbage_byte>. How is Python
> going to know where in this 1K byte block the end of the string is? It
> seems that what I need to do is tell Python that the string ends at
> zero-relative index 3. What am I missing here?
>

You are missing this, contained in the third message in this thread
i.e. my first reply to you:
"""
It's possible you may be talking about a fixed length string which
contains useful_stuff + "\0" + padding -- in that case you need

strg = strg.split("\0")[0] # grab upto (but not including) the first
NUL (if any)
"""

Please note that Robert Kern's solution is better than the above (as he
says, it won't waste time splitting up the garbage, the mind-boggling
relative size of which I hadn't catered for).

You are also missing the frequent (3 at last count) exhortations to:
    print repr(your_string)
which is much more precise than verbal descriptions.

Cheers,
John



From ruth.hill at iinet.net.au  Mon Sep 25 21:22:19 2006
From: ruth.hill at iinet.net.au (ruth hill)
Date: èøM
Jun, 26 Sep 2006 09:22:19 +0800
Subject: Mail Delivery System
Message-ID: <200609260133.k8Q1XIeW022586@il06exr01.mot.com>

Mail transaction failed. Partial message is available.

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email 
______________________________________________________________________

From rhymes at myself.com  Sun Sep 24 14:49:18 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Sun, 24 Sep 2006 20:49:18 +0200
Subject: ctypes question about call by reference
References: <mailman.535.1159113152.10491.python-list@python.org>
	<1hm6khm.1wdxlsif8cyfN%rhymes@myself.com>
	<mailman.536.1159115299.10491.python-list@python.org>
Message-ID: <1hm6s39.kwqjy3a5kybkN%rhymes@myself.com>

Oliver Andrich <oliver.andrich at gmail.com> wrote:
> Well, what I learned so far from the documentation, which I already
> have read more then once today, is that there is no example for an
> enum in this situation. But looking at pygame-sdl and another project,
> it looks like the enum is just an c_int or c_long.

The documentation explains how to build an enum to pass to a function:
http://docs.python.org/lib/ctypes-structures-unions.html

See the first sentence.

class ExceptionType(Union):
    _fields_ = [list_of_tuples]

> Is it at all possbile to use a struct without defining it with ctypes?

If you want to use it you have to define it somewhere...

> Is it okay, to just use the int which is returned by default? Most of
> my library works with that configuration, so I thought it is working.

I see your functions returns a "char *" so I don't understand what are
you saying here...

> Based on this, can you give me some more hints?

It's not really clear :-)

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From grahn+nntp at snipabacken.dyndns.org  Sat Sep  2 13:49:17 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 2 Sep 2006 17:49:17 GMT
Subject: Netstat Speed
References: <44f95c2c@127.0.0.1> <slrnefiqcj.j6l.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <slrnefjb7p.3bp.grahn+nntp@frailea.sa.invalid>

On Sat, 2 Sep 2006 13:22:59 +0200, Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:
...
> def activeip(checkip):
>      # if there is any line returned we set activeb to 1 indicating that
>      # this ip is active during a netstat run   
>      activeb = 0          
>      netstat = os.popen("netstat -a -n | grep '%s'" % checkip)
>      for line in netstat:
>          s = line
>          if s:
>             activeb = 1
>             break
>      netstat.close()
>      return activeb 
>
> Another way would be to let grep do the work for you. Pass it the '-q'
> option and check its exit code.

I suspect it's faster to skip the grep altogether and do the string search
in Python. That also means you can drop the implicit shell invocation, and
just exec netstat, period.

No matter what, I think you'll find most of the wall time is spent starting
netstat and having it wade through kernel statistics.

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From techie2go at gmail.com  Sun Sep 10 04:32:48 2006
From: techie2go at gmail.com (techie2go)
Date: 10 Sep 2006 01:32:48 -0700
Subject: search and replace in a file :: newbie help
In-Reply-To: <edu99t$2l5$03$2@news.t-online.com>
References: <1157799381.062540.59580@i42g2000cwa.googlegroups.com>
	<edu99t$2l5$03$2@news.t-online.com>
Message-ID: <1157877168.216697.75210@b28g2000cwb.googlegroups.com>

thanks , i got it



From isalazar80 at yahoo.com.mx  Wed Sep 13 17:38:37 2006
From: isalazar80 at yahoo.com.mx (itzel)
Date: 13 Sep 2006 14:38:37 -0700
Subject: ReadError, "not a bzip2 file"
Message-ID: <1158183516.850976.252260@i42g2000cwa.googlegroups.com>

Hello!!
In using tarfile to group thousands of small files from a directory and
then compress it. I already compress a group of files in my pc, but I
need do it in a server and I'm testing the same procedure, but it
doesn't work . A "ReadError" appear: "not a bzip2 file". I'm using this
script:

import os
import tarfile

dstfolder = '/somepath/to/output'    ## server
fileorfoldertobackup = '/home/username'  ##  server
dst = '%s.tar.bz2' % os.path.join(dstfolder,
os.path.basename(fileorfoldertobackup))
out = tarfile.TarFile.open(dst, 'w:bz2')
out.add(fileorfoldertobackup,
arcname=os.path.basename(fileorfoldertobackup))
out.close()

What I?m doing wrong? Is necesary install a python version into the
server??

Thanks!!



From nogradi at gmail.com  Sat Sep 16 16:43:41 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 16 Sep 2006 22:43:41 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158437430.667410.78480@i3g2000cwc.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
	<pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>
	<1158437430.667410.78480@i3g2000cwc.googlegroups.com>
Message-ID: <5f56302b0609161343q4197865alcd0b9f7c209759e0@mail.gmail.com>

> Everytime I am lookink at how to do this or that in Python I write it
> down somewhere on my computer. (For ex. Threading. After reading the
> official documentation I was a bit perplex. Hopefully I found an
> article an managed to implement threads with only like 20 lines of code
> in my script. That should have been in the docs first, not in an
> article elsewhere... Same problem for handling gzipped files. I wanted
> to know if the file I opened was a gzip archive or not. Not a clue in
> the docs...) I have just decided to share all this knowledge this with
> other. Community will decide if this wiki is of any interest. If not it
> will just remain my personnal notebook for Python tips...
>
> Anyway Python rocks, that's the important point!
>

Then how about running your site on python and not php?

Just a thought.


From horpner at yahoo.com  Tue Sep 19 08:22:16 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 19 Sep 2006 14:22:16 +0200
Subject: [ANN] Code Golf Challenge : 1,000 Digits Of Pi
References: <450EB2B7.1070407@carldr.com>
	<mailman.242.1158616735.10491.python-list@python.org>
Message-ID: <slrnegvo7e.1d4.horpner@FIAD06.norwich.edu>

On 2006-09-18, Calvin Spealman <ironfroggy at gmail.com> wrote:
> Just once, I would like to see a programming contest that was
> judged on the quality of your code, not the number of bytes you
> managed to incomprehensively hack it down to.

Check out the ICFP Functional Programming Contest. Most of the
challenges they put together are rated on many factors, and code
size is usually not one of them.

Despite the contest's title, they welcome entrants from any
programming language (provided it supports thier testing system),
since presumably that gives the functional programmers something
to defeat.

-- 
Neil Cerutti


From sjdevnull at yahoo.com  Wed Sep 27 02:10:18 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 26 Sep 2006 23:10:18 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <roy-055E4F.20055226092006@reader2.panix.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
	<roy-055E4F.20055226092006@reader2.panix.com>
Message-ID: <1159337418.630332.80100@k70g2000cwa.googlegroups.com>

Roy Smith wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> wrote:
> > If you're really trying to become a well-rounded computer professional
> > I'd recommend reasonable exposure to at least:
> >
> > * C
> > * A static functional language (ML, Haskell, etc)
> > * Lisp or scheme Scheme
> > * A static class-oriented language (Java, C++, etc)
> > * A dynamic OO language (Python, ruby, smalltalk, etc)
> >
> > and at least a brief look at, say, Forth and Prolog.
>
> Interesting list.  Of those, I've done tons of C, just enough lisp to get
> the feel of it, lots of C++, and of course Python.  I've never done any
> functional stuff.

You should.  It's very enlightening.

>  Just enough Forth to be able to say I'd done it (as long
> as you don't press me too hard on the exact definition of "done it").
>
> I've also done a lot of serious Fortran.  Some SQL.  Some Java.  Perl when
> I'm forced into it.  PostScript (yes, it really is a programming language).

SQL I don't class as a programming language, but it's certainly worth
learning for most modern programmers.

Postscript is a stack-oriented language  in the same vein as Forth, so
if you really learn one then I wouldn't bother with the other until
you've learned something in each of the genres I've listed (unless you
need the second for a reason--but I wouldn't learn 2 stack languages in
an "expand your brain" excercise until after you've learned languages
in lots of other categories).

> The point is, there's lots of languages.  If your goal is to make a career
> as a programmer, you will eventually end up learning lots of languages.
> Each one will teach you something and make you a better programmer.

Yes, and making sure that the first several you learn are disparate in
their common idioms and programming models is incredibly worthwile to
your development as a programmer IMO.  Obviously if you need a language
for a job, you learn that next.  But when it comes to learning new
languages for fun, if you already know C++ and Python I really think
you're much better off learning Lisp, ML, or Forth than Ruby or Java as
your next "learn to improve my skills" language.

And it's not about hot new things; you can easily learn a _ton_ about
programming by learning C, Lisp, Smalltalk, C++, ML, Algol, and Forth,
and you haven't learned any new "flavor of the month" language.  The
difference between Ruby, Python, and Smalltalk is very small compared
to the difference between C, Lisp, and ML.



From rdrink at artic.edu  Sun Sep  3 14:54:10 2006
From: rdrink at artic.edu (rdrink)
Date: 3 Sep 2006 11:54:10 -0700
Subject: pysqlite - simple problem
In-Reply-To: <YG8Kg.5061$bM.817@newsread4.news.pas.earthlink.net>
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
	<1157096859.197049.120950@i42g2000cwa.googlegroups.com>
	<Za_Jg.1457$v%4.69@newsread1.news.pas.earthlink.net>
	<1157159337.388268.306790@m73g2000cwd.googlegroups.com>
	<YG8Kg.5061$bM.817@newsread4.news.pas.earthlink.net>
Message-ID: <1157309650.214185.171650@m73g2000cwd.googlegroups.com>

Dennis Lee Bieber wrote:

> 	That is probably the worst way to "fix" the problem -- as in the
> future, you may end up trying that method for something that may need to
> be quoted or escaped.
>
> 	cur.execute(template, (arg1,) )
>
> allows the DB-API spec to properly convert the argument to the string
> format (quoted or escaped) as needed.

Thank you Dennis, point taken.
I will upgrade to pysqlite2 as soon as possible.

>the "pyformat" parameter style means that you're supposed to use "%s"
>instead of "?" for the placeholders:
>
>     cur.execute("INSERT INTO foo (id) VALUES (%s)", (num,))

Thanks Fredrick, that seems so obvious now!....

> (I'm sure this is mentioned in the fine manual, btw ;-)

... I guess I have must have missed it ;-)

>while string formatting works, and is safe for simple cases like this,
>it can quickly turn into a performance and security problem.  better
>avoid it for anything other than command-line tinkering and throw-away
>scripts.

You are both right about the perils of a non-standard approach, which
could easily break. Fortunately in this case this is a private project,
so no worry there.
-----
And while you are both being so helpful, May I ask anyother stupid
question?...
One of the columns of my table contains a rather large list of numbers
e.g. [12345, 76543, 89786, ... ] sometimes up to 500 entries long.
And when I defined my table I set this column to text.
But the problem with that approach is of course then that it gets
returned as a string (which just happens to look like a list!) and I
can't iter over it. However I can use rsplit(','), with the exception
of the leading and trailing '[' ']', and I could fix that too... but
that's not the point... the real question is: Is there a way to have
python interperate the string "[ a,b,c ]" as a list? (and yes I have be
reading up on typing)...
OR
Is there a better way to store this in sqlite, ala a BLOB or encoded?

Thanks
Robb



From toby at tobiah.org  Wed Sep 27 16:58:53 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 13:58:53 -0700
Subject: OT: productivity and long computing delays
In-Reply-To: <7xr6xx2gpn.fsf@ruckus.brouhaha.com>
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
	<mailman.840.1159388059.10491.python-list@python.org>
	<7xr6xx2gpn.fsf@ruckus.brouhaha.com>
Message-ID: <451ad93d$0$19727$88260bb3@free.teranews.com>

> about RSI).  My workday is getting chopped up in a manner sort of like
> memory fragmentation in a program, where you end up with a lot of
> disjoint free regions that are individually too small to use.

One way to look at this, is that the work environment is
always fragmented.  Emails, phone calls, co-workers, meals,
meetings...  For many of us, large uninterrupted blocks of coding
time are rare.  In your case, you have blocks of time that
you feel are too small to be used toward another project.  I know
the feeling well.  I'll sit for two minutes staring at the screen
waiting for a download, or a compile, when I know darned well I
could use that time for something else.

How about a task 'stack'.  Make a (electronic) list of all projects
according to priority, with space for a 'register snapshot' next to
each entry.  When a delay shows up in the current project, write a
note describing what you were doing when the task was interrupted,
and go to the highest priority task available in the list.  Read the
note next to the task name, and you are off on the next task, if only
for a half hour, or in your case one or two  hours.  When the higher
priority task is available again, update the current task context note
to reflect the state after your work, and jump to the old task, checking 
it's context to refresh your state of mind.

Tobiah

-- 
Posted via a free Usenet account from http://www.teranews.com



From http  Mon Sep  4 16:53:13 2006
From: http (Paul Rubin)
Date: 04 Sep 2006 13:53:13 -0700
Subject: inaccuracy in the time module
References: <AvmdndRyXfGBDGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <7x64g3l5fq.fsf@ruckus.brouhaha.com>

alf <ask at me> writes:
>  >>> t=time()
>  >>> mktime(gmtime(t))-t
> 17999.680048942566
> why there is a difference?

time() is a floating point number with fractional seconds.
gmtime()'s resolution is one second.


From sferriol at imag.fr  Fri Sep  1 04:28:41 2006
From: sferriol at imag.fr (Sylvain Ferriol)
Date: Fri, 01 Sep 2006 10:28:41 +0200
Subject: a new object definition
Message-ID: <ed8rce$ikn$1@trompette.imag.fr>

hello everybody,

i want to talk with you about a question i have in mind and i do not
find a answer. it 's simple:
why do we not have a beatiful syntax for object definition as we have
for class definition ?

we can define a class in python in 2 ways:
  1. by using the metaclass constructor
    my_class = MyMetaClass(....)
  2. by using the classic definition syntax:
    class my_class(object):
       __metaclass__ = MyMetaClass

if i want to instanciate an object, i only have one way to define it:
  my_obj = my_class(....)

why not a better syntax like class syntax ?

example:
>> instance my_obj:
>>   __class__ = my_class


with this syntax, we are coherent between objects and classes.
why do we have a specific syntax for the class object definition and not
for objects of different type?

so if i want to define a new class object (my_class for example) with a
new object syntax:
>> instance my_class:
>>   __class__ = object
>>   __metaclass__ = MyMetaClass
>>   ....

thanks

Sylvain Ferriol
Ing?nieur de recherche
Laboratoire TIMC/IMAG
http://www-timc.imag.fr/



From fijall at gmail.com  Thu Sep 14 11:35:26 2006
From: fijall at gmail.com (fijal)
Date: 14 Sep 2006 08:35:26 -0700
Subject: Python to JavaScript Compiler? Anyone written such a beast?
In-Reply-To: <mailman.53.1158200506.10491.python-list@python.org>
References: <dM2Og.1751$IA.558@newssvr11.news.prodigy.com>
	<mailman.53.1158200506.10491.python-list@python.org>
Message-ID: <1158248126.096125.31890@i3g2000cwc.googlegroups.com>


Helpfull link to JS specific docs in pypy:

http://codespeak.net/pypy/dist/pypy/doc/js/using.html



From paul at boddie.org.uk  Wed Sep 27 06:42:17 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 27 Sep 2006 03:42:17 -0700
Subject: One program in different GUI Toolkits
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
	<cf9kh2dft7s8g6akqchlqd24pjisr51ji1@4ax.com>
Message-ID: <1159353736.964304.41940@m7g2000cwm.googlegroups.com>

Franz Steinhaeusler wrote:
>
> What about a small text editor using the scintilla control?
> It should be available for Pythoncard, wxPython, pygtk and pyQt
> (qtscintilla).
> With a small find dialog, open, save should be enough for the beginning.

You might be interested in this page:

http://wiki.python.org/moin/GuiProgrammingShootout

Other people have suggested similar projects before, and you might be
able to get the ball rolling with the above suggestion.

Paul



From greg.kujawa at gmail.com  Sat Sep 30 02:14:34 2006
From: greg.kujawa at gmail.com (gregarican)
Date: 29 Sep 2006 23:14:34 -0700
Subject: Python/UNO/OpenOffice?
In-Reply-To: <mailman.989.1159596284.10491.python-list@python.org>
References: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
	<mailman.989.1159596284.10491.python-list@python.org>
Message-ID: <1159596874.099863.312220@i3g2000cwc.googlegroups.com>

That's what I would imagine. Kind of like calling some Microsoft Office
COM/OLE methods in a wrapper. As long as the wrapper has most of the
methods you need and the core COM/OLE calls don't change then that's a
great start.

Gary Herron wrote:
> kenneth.m.mcdonald at sbcglobal.net wrote:
> > Are then any currently active and reasonably mature Python plugins/
> > apis/whatever for programming/scripting OpenOffice? The page I've
> > found is http://udk.openoffice.org/python/python-bridge.html, but
> > it was last updated more than a year ago.
> >
> > Thanks,
> > Ken
> >
> I don't believe that information is out-of-date. I use the python-bridge
> with the OpenOffice version 2.0.3 quite successfully. In my case I open
> a spread sheet and search around for and extract various values. It
> works just fine for me.
> 
> Gary Herron



From rNOSPAMon at flownet.com  Fri Sep  1 03:59:26 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Fri, 01 Sep 2006 00:59:26 -0700
Subject: Parsing form input in a BaseHTTPServer
Message-ID: <rNOSPAMon-C7BF34.00592601092006@news.gha.chartermi.net>

I'm write a web server using BaseHTTPServer.  It can't be a CGI because 
it has to do some weird server-push stuff as database updates come in.  
But I still need to process form inputs as if it were a CGI.  But the 
cgi module only works in a CGI environment.  Is there something with the 
equivalent functionality of cgi.FieldStorage for parsing form input in a 
non-CGI environment such as a BaseHTTPServer?  I looked at the cgi 
module code but it looked like it was pretty heavily intertwingled with 
the CGI environment variables.

Thanks,
rg


From agarwaengrc at blabla_yahoo.com.au  Sun Sep 24 18:46:18 2006
From: agarwaengrc at blabla_yahoo.com.au (dtlog)
Date: Mon, 25 Sep 2006 01:46:18 +0300
Subject: newbie IronPython compiled scripts speed question
References: <op.tgees50h3p2nzo@fafoi.lan>
	<1hm6y6t.1w95pxge6vhiN%rhymes@myself.com>
Message-ID: <op.tgemvgbc3p2nzo@fafoi.lan>

On Sun, 24 Sep 2006 23:59:34 +0300, Lawrence Oluyede <rhymes at myself.com>  
wrote:
> I don't know what you heard but IronPython generates IL code which
> happens to be the bytecode of the CLR (the runtime of .NET). So you are
> not generating "native" stuff but a PE executable wrapping the .NET
> stuff in it.

not native... I see.
thanks for the info, so there's not much point in turning to
IronPython for speeding up scripts yet...


From bdg4 at duke.edu  Fri Sep  8 20:16:54 2006
From: bdg4 at duke.edu (Benjamin Grant)
Date: Fri, 08 Sep 2006 20:16:54 -0400
Subject: Unable to make python work properly
Message-ID: <1157761014.5117.9.camel@receive>

Hi all,
I'd greatly appreciate any help.  I can configure, make and install
everything fine.  I'm using python 2.4  I have ubuntu dapper drake. I am
trying to install hplip which requires python.  When I do this, this
also works but while running the following error occurs:
Traceback (most recent call last):
  File "/usr/local/bin/hp-setup", line 31, in ?
    import readline, gzip
ImportError: No module named readline




It appears as though for some reaosn the readline module is not being
installed on my system.  Also, it doesn't really seem like python could
possibly be being installed correctly.  If I go to python tools and try
to run ./listmodules I get the following error:


> File "/usr/lib/python2.4/doc/tools/listmodules", line 183, in ?
>     main()
>   File "/usr/lib/python2.4/doc/tools/listmodules", line 119, in main
>     os.chdir("Modules")
> OSError: [Errno 2] No such file or directory: 'Modules'
> 
> 
Any tool i try to run in the python/doc folder gives me error messages.  Any thoughts on why
this is not working at all? I'd gladly erase everything w/ regards to python
and start over if that would help, but i'm unsure how to do that. Thanks for the help
Ben



From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 07:02:18 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 12:02:18 +0100
Subject: Getting Process Name on Win32
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B415@vogbs009.gb.vo.local>

[Rama]

|      I want to list the names of all the processes running on 
| my machine. I am stuck at this point and do not know how to 
| extract the name of a process.

WMI is good for this kind of thing:

http://tgolden.sc.sabren.com/python/wmi_cookbook.html#running_processes

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From chris.cavalaria at free.fr  Tue Sep 26 06:20:40 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Tue, 26 Sep 2006 12:20:40 +0200
Subject: Surprise using the 'is' operator
In-Reply-To: <1159264481.693180.67850@e3g2000cwe.googlegroups.com>
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
Message-ID: <4518fedf$0$18997$636a55ce@news.free.fr>

codefire a ?crit :
> Haha!
> 
> OK thanks guys.
> 
> I was just trying to check if objects were the same (object), didn't
> know Integers were a special case.

They are not a special case so much. It's just that "is" is extremly 
unreliable unless you're the one who created the objects. In the case of 
integers, it's the CPython implementation which constructs them as it 
sees fit and so, you cannot expect any kind of reliable "is" behavior.

When you are manipulating let's say lists, it gets much more reliable. 
You do know that the list you create by doing a = [] is not and will 
never be the same than the one you'll create later by doing b = []


From steve at holdenweb.com  Sat Sep 30 12:46:03 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 17:46:03 +0100
Subject: builtin regular expressions?
In-Reply-To: <efm04n$lb3$1@mlucom4.urz.uni-halle.de>
References: <451e37a5$1@news.vo.lu> <efm04n$lb3$1@mlucom4.urz.uni-halle.de>
Message-ID: <efm3e7$kpj$1@sea.gmane.org>

Mirco Wahab wrote:
> Thus spoke Antoine De Groote (on 2006-09-30 11:24):
> 
> 
>>Can anybody tell me the reason(s) why regular expressions are not built 
>>into Python like it is the case with Ruby and I believe Perl? Like for 
>>example in the following Ruby code
>>I'm sure there are good reasons, but I just don't see them.
>>Python Culture says: 'Explicit is better than implicit'. May it be 
>>related to this?
> 
> 
> I think it is exactly because the /\b(\d+)\s+\/\//
> together with $_ and $whatever=~/\/\/(?=\d+)/ are
> seen as the 'line noise' everybody talks about ;-)
> 
> Regex as part of the core language expressions
> makes code very very hard to understand for
> newcomers, and because Python is ...
> 
> To invoke an additional cost in using Regexes,
> the language simply prevents them in a lot of
> situations. Thats it. You have to think three
> times before you use them once. In the end,
> you solve the problem 'elsewise' because of
> the pain invoked ;-)
> 
Tim Peters frequently says something along the lines of "If you have a 
problem and you try to solve it with regexes, then you have TWO 
problems". This isn't because the Python use of regexes is more 
difficult than Perl's: it's because regexes themselves are inherently 
difficult when the patterns get at all sophisticated.

If you think Perl gives better text-handing features nobody is going to 
mind if you use Perl - appropriate choice of language is a sign of 
maturity. Personally I tend to favour the way Python does it, but I 
don't require that anyone else does.

The real answer to "why doesn't Python do it like Perl?" is "Because 
Python's not like Perl".

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Mon Sep 18 18:25:49 2006
From: sjmachin at lexicon.net (John Machin)
Date: 18 Sep 2006 15:25:49 -0700
Subject: Cheese Shop Registration error
In-Reply-To: <450f165c$0$5111$afc38c87@news.optusnet.com.au>
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
	<450f165c$0$5111$afc38c87@news.optusnet.com.au>
Message-ID: <1158618349.740529.181620@e3g2000cwe.googlegroups.com>


Richard Jones wrote:
> alefnula at gmail.com wrote:
> > The Key ID that the kgpg shows. I tried to paste the key returned by
> > the quiery on the keyserver. but it also doesn't work. I tried
> > everything that has any connection with the key, but everything fails.
> >
> > By the way the key is: 6A61E3AD
>
> Here is the code that could generate that error message:
>
>                 if len(gpgid) != 8:
>                     raise FormError, 'GPG key ID is invalid'
>                 try:
>                     int(gpgid)

| >>> int("6A61E3AD")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: invalid literal for int(): 6A61E3AD
| >>> int("6A61E3AD", 16)
1784800173

What am I missing?

>                 except ValueError:
>                     raise FormError, 'GPG key ID is invalid'
>
> So I suspect there might have been some cut-n-paste error. Check that you've
> not pasted in any whitespace that could confuse the first test.
> 

Cheers,
John



From paddy3118 at netscape.net  Sun Sep 17 01:20:07 2006
From: paddy3118 at netscape.net (Paddy)
Date: 16 Sep 2006 22:20:07 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <1158470407.792851.52010@m7g2000cwm.googlegroups.com>


nicolasfr at gmail.com wrote:
> Hi,
>
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
>
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
>
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.
>
> Regards,
>
> Nicolas.
> -----
> http://www.pythondocs.info

I wonder about what is going wrong here. On the one hand we have
http://www.awaretek.com/tutorials.html with its "more than 300
tutorials", and on the other we have maybe too many people disgruntled
with the main Python documentation.

It seems people want to make better Python documentation and are
willing to put in the effort.
Maybe there is something broken in the process for contributing to the
official documentation?

Personally, I thought it was OK back in 199.... but I did program in
several other languages, including scripting languages, before Python.

- Paddy.



From esj at harvee.org  Wed Sep 20 22:23:46 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Wed, 20 Sep 2006 22:23:46 -0400
Subject: sgid and python programs
Message-ID: <eest40$sch$1@sea.gmane.org>

  Assuming one can't avoid  the need to set the group ID of a Python 
program, is a wrapper program still considered the best way to do that?

the reason I ask is that a few years ago, I picked up a program that was 
(and maybe still is) shipped with Python as a wrapper for sgid programs. 
   I searched but Google still tells me as much now as it did then about 
Python and changing the effective group ID (i.e. not very much).

Thanks for any council or advice on the matter.

---eric



From robert.kern at gmail.com  Mon Sep 25 19:39:36 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 25 Sep 2006 18:39:36 -0500
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <ef9pbk$u0j$1@sea.gmane.org>

walterbyrd wrote:
> If so, I doubt there are many. 
> 
> I wonder why that is?

Well I do. So do the other dozen or so developers at my company. We're looking 
to hire a few more, in fact.

   http://www.enthought.com/careers.htm

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From ninjazombie at net.hr  Sun Sep 24 17:41:15 2006
From: ninjazombie at net.hr (NinjaZombie)
Date: Sun, 24 Sep 2006 23:41:15 +0200
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
	<7x8xk9t1mn.fsf@ruckus.brouhaha.com>
	<4nob2hFbbk5nU1@individual.net>
	<pan.2006.09.24.21.25.30.501862@net.hr>
	<7xr6y17xss.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2006.09.24.21.41.12.917275@net.hr>

Na dan Sun, 24 Sep 2006 14:35:31 -0700, Paul Rubin je napisao:
> Try it this way:
> 
>      import os, sys
>      print "Entering program"
> 
>      if os.fork():
>         sys.exit()              # parent process exits so shell returns
> 
>      while (1):                 # child process continues
>             pass    # some other work

This works! Thanks a bunch, Paul.


From sjmachin at lexicon.net  Mon Sep 11 00:58:22 2006
From: sjmachin at lexicon.net (John Machin)
Date: 10 Sep 2006 21:58:22 -0700
Subject: Simple regex with whitespaces
In-Reply-To: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
References: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
Message-ID: <1157950702.227346.40530@i3g2000cwc.googlegroups.com>

mathieu.malaterre at gmail.com wrote:
> Hello,
>
>   I cannot figure out a way to find a regular expression that would
> match one and only one of these two strings:
>
> s1 = '                              how are you'
> s2 = '    hello world               how are you'
>
>   All I could come up with was:
> patt = re.compile('^[ ]*([A-Za-z]+)[  ]+([A-Za-z]+)$')
>
>   Which of course does not work. I cannot express the fact: sentence
> have 0 or 1 whitespace, separation of group have two or more
> whitespaces.
>
> Any suggestion ? Thanks a bunch !
> Mathieu

1. A "word" is one or more non-whitespace charaters -- subpattern is
\S+
2. A "sentence" is one or more words separated by a single white space
IOW a word followed by zero or more occurrences of  whitespace+word --
so a sentence will be matched by \S+(\s\S+)*
3. Leading and trailing runs of whitespace should be ignored -- use \s*
4. You will need to detect the case of 0 sentences (all whitespace)
separately -- I trust you don't need to be told how to do that :-)
5. Don't try to match two or more sentences; match one sentence, and
anything that fails must 0 or 2+ sentences.

So :

|>>> s1 = '                              how are you'
|>>> s2 = '    hello world               how are you'
|>>> pat = r"^\s*\S+(\s\S+)*\s*$"
|>>> import re
|>>> re.match(pat, s1)
|<_sre.SRE_Match object at 0x00AED9E0>
|>>> re.match(pat, s2)
|>>> re.match(pat, '      ')
|>>> re.match(pat, '     a     b    ')
|>>> re.match(pat, '     a b    ')
|<_sre.SRE_Match object at 0x00AED8E0>
|>>> re.match(pat, '     ab    ')
|<_sre.SRE_Match object at 0x00AED920>
|>>> re.match(pat, '     a    ')
|<_sre.SRE_Match object at 0x00AED9E0>
|>>> re.match(pat, 'a')
|<_sre.SRE_Match object at 0x00AED8E0>
|>>>

HTH,
John



From rhymes at myself.com  Thu Sep  7 13:14:00 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 7 Sep 2006 19:14:00 +0200
Subject: [ANN] IronPython 1.0 released today!
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.124.1157638824.5279.python-list@python.org>
Message-ID: <1hlb5vp.yekzc115cn2k3N%rhymes@myself.com>

Felipe Almeida Lessa <felipe.lessa at gmail.com> wrote:
> Does IronPython runs Twisted?

I really don't think so. They don't have many needed modules, like
select :-)

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From waylan at gmail.com  Wed Sep 13 15:06:45 2006
From: waylan at gmail.com (waylan)
Date: 13 Sep 2006 12:06:45 -0700
Subject: page contents are not refreshed
References: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
Message-ID: <1158174404.950910.260050@b28g2000cwb.googlegroups.com>

Gleb Rybkin wrote:
> when running apache, mod_python in windows.
>
> This looks pretty strange. Creating a simple python file that shows
> current time will correctly display the time in apache the first time,
> but freezes afterwards and shows the same time on all subsequent clicks
> as long as the file is not modified.
>
> Any ideas what's wrong? Thanks.

The first time the page was requested mod_python compiled and loaded
your code. Every request after that mod_python refers to the already
loaded code in memory in which your expression had already been
evaluated the first time.

Therefore, you need to make curtime a 'callable object' so that it will
be re-evaluated on each request. Unfortunelty, I don't recall if simply
wraping your strftime() expression in a function will be enough or if
its more complex that that. That said, I **think** this should work:
>
> from mod_python import apache
> from time import strftime, gmtime
>
def curtime():
    return strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())

> def handler(req):
>      req.content_type = "text/plain"
>      req.send_http_header()
>      req.write(str(curtime()))
>      return apache.OK



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Sep 14 15:25:15 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 14 Sep 2006 21:25:15 +0200
Subject: Why not event-driven packages in other than the main thread?
References: <eeb6go$kfk$1@news.uit.no> <4msmn3F7ni7iU1@individual.net>
	<eebaua$m0d$1@news.uit.no>
	<1hlnmz2.p8f1a11ne4f9gN%rhymes@myself.com>
Message-ID: <4mtokoF7nljsU1@individual.net>

Lawrence Oluyede wrote:

> It's better to use GUI with a real reactor available like GTK2
> anyway...

What's not real about Tkinter's?

Regards,


Bj?rn 

-- 
BOFH excuse #371:

Incorrectly configured static routes on the corerouters.



From steve at holdenweb.com  Mon Sep 18 20:38:49 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 18 Sep 2006 20:38:49 -0400
Subject: Read a group of files as a list
In-Reply-To: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
References: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
Message-ID: <eene5a$f75$1@sea.gmane.org>

citlaly wrote:
> Hi!!
> I'm a beginner in python and I'm trying to use the files from a
> "folder" as a list. What I want to do is  read each one as a list, but
> just the name of the file, the data inside doesn't matter. How can I do
> it?  I was trying using a list, but I don't know how "convert" the
> elements (files) to a list that I can read and manipulate...
> 
> Thanks in advance for your help!!
> 
C:\Steve\wordpress>dir
  Volume in drive C has no label.
  Volume Serial Number is 9CA8-2A02

  Directory of C:\Steve\wordpress

08/15/2005  12:02 AM    <DIR>          .
08/15/2005  12:02 AM    <DIR>          ..
02/13/2005  04:38 PM                95 index.php
04/01/2003  10:12 AM            15,127 license.txt
05/27/2005  01:51 PM             8,781 readme.html
08/15/2005  12:02 AM    <DIR>          wp-admin
05/09/2005  07:11 AM             1,972 wp-atom.php
05/13/2005  05:07 PM             8,641 wp-blog-header.php
05/03/2005  03:31 AM             2,365 wp-comments-post.php
08/14/2005  02:21 PM             3,369 wp-commentsrss2.php
02/21/2005  02:38 AM               840 wp-config-sample.php
08/15/2005  12:02 AM    <DIR>          wp-content
03/29/2005  11:05 AM               762 wp-feed.php
08/15/2005  12:02 AM    <DIR>          wp-images
08/15/2005  12:02 AM    <DIR>          wp-includes
03/22/2005  05:56 PM             2,319 wp-links-opml.php
06/26/2005  12:27 PM             9,864 wp-login.php
02/01/2005  09:21 AM             5,591 wp-mail.php
03/13/2005  12:36 PM               299 wp-pass.php
02/21/2005  12:19 AM             2,346 wp-rdf.php
04/18/2005  11:35 PM             6,525 wp-register.php
02/21/2005  12:19 AM             1,345 wp-rss.php
02/24/2005  02:29 PM             2,100 wp-rss2.php
08/14/2005  11:57 PM             5,840 wp-settings.php
04/20/2005  06:06 PM             3,069 wp-trackback.php
02/14/2005  12:36 AM             1,922 wp.php
08/14/2005  02:06 PM            38,304 xmlrpc.php
               21 File(s)        121,476 bytes
                6 Dir(s)  15,239,180,288 bytes free

C:\Steve\wordpress>python
Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on 
win32
Type "help", "copyright", "credits" or "license" for more information.
Started with C:/Steve/.pythonrc
  >>> import glob
  >>> glob.glob("*")
['index.php', 'license.txt', 'readme.html', 'wp-admin', 'wp-atom.php', 
'wp-blog-header.php', 'wp-comments-post.php', 'wp-commentsrss2.php', 
'wp-config-sample.php', 'wp-content', 'wp-feed.php', 'wp-images', 
'wp-includes', 'wp-links-opml.php', 'wp-login.php', 'wp-mail.php', 
'wp-pass.php', 'wp-rdf.php', 'wp-register.php', 'wp-rss.php', 
'wp-rss2.php', 'wp-settings.php', 'wp-trackback.php', 'wp.php', 
'xmlrpc.php']

There are os.path functions that will tell you whether a particular file 
name (fn) is a directory or a plain file.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From cjlesh at gmail.com  Tue Sep 12 08:10:06 2006
From: cjlesh at gmail.com (cjl)
Date: 12 Sep 2006 05:10:06 -0700
Subject: Running python from a usb drive
In-Reply-To: <1158028522.981282.159760@m73g2000cwd.googlegroups.com>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
	<1158024872.905234.117100@m73g2000cwd.googlegroups.com>
	<1158026095.979937.206300@i42g2000cwa.googlegroups.com>
	<1158028522.981282.159760@m73g2000cwd.googlegroups.com>
Message-ID: <1158063006.685269.66090@i3g2000cwc.googlegroups.com>

Jason:

Thanks! That worked...in fact, almost everything is now working as
expected (so far).

Here is my batch file:

echo "Making changes to path and file associations..."
path =
%PATH%;%CD%Python24;%CD%Python24\libs;%CD%Python24\Scripts;%CD%Python24\Lib\site-packages;%CD%Python24\DLLs
set PYTHONPATH=%CD%Python24
ASSOC .py=Python.File
ASSOC .pyc=Python.CompiledFile
ASSOC .pyo=Python.CompiledFile
ASSOC .pyw=Python.NoConFile
FTYPE Python.File=%CD%Python24\python.exe "%%1" %%*
FTYPE Python.CompiledFile=%CD%Python24\python.exe "%%1" %%*
FTYPE Python.NoConFile=%CD%Python24\pythonw.exe "%%1" %%*
set PATHTEXT=.py;%PATHTEXT%
CMD

I'm still having a problem with setting PATHTEXT...I should be able to
now type django-admin at the cmd prompt and have it work, but I need to
still type django-admin.py  ... I'm not sure what's wrong with my
setting of pathtext.

Any ideas?

Thanks again,
CJL



From deets at nospam.web.de  Fri Sep  1 18:56:28 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 02 Sep 2006 00:56:28 +0200
Subject: disgrating a list
In-Reply-To: <1157133689.234692.3680@p79g2000cwp.googlegroups.com>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<4lr9ssF39q4lU2@uni-berlin.de>
	<1157133689.234692.3680@p79g2000cwp.googlegroups.com>
Message-ID: <4lrs4rF3d391U1@uni-berlin.de>

jwaixs schrieb:
> Diez B. Roggisch wrote:
>> Why do you wrap a in a list? Just
>>
>> c = a + [b]
>>
>> will do it.
> 
> Yes I know, but the problem is I don't know if 'a' is a list or not. I
> could make a type check, but I don't want to program in that way.

So you're telling us that

if not isinstance(a, list):
    a = [a]
c = a + [b]

is for some reason not desireable, whereas a much more complex (and most 
probably utilizing the very same typechecks) flattening is ok for you?

Not a to convincing argument to me.

Diez


From steve at holdenweb.com  Wed Sep 20 12:07:41 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 12:07:41 -0400
Subject: Nested Looping SQL Querys
In-Reply-To: <45116461$0$26869$626a54ce@news.free.fr>
References: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
	<45116461$0$26869$626a54ce@news.free.fr>
Message-ID: <eerout$sao$1@sea.gmane.org>

Bruno Desthuilliers wrote:
> Fuzzydave wrote:
> 
> (snip)
> """
> pubID=cgiForm.getvalue('pubID')
> pubName=cgiForm.getvalue('pubName','Unknown Publication')
> 
> sqlcheck1 = "SELECT pub_type FROM medusa.cmi_publication WHERE pub_id =
> '"+pubID+"'"
> overseas1 = conn.query(sqlcheck1)
> pubType = cmi.fetch_rows(overseas1)
> """
> 
> May we have the url where we can see this application in action ? I know
> some crackers that would be really pleased to mess with your production
> database...
> 
> 
In case Bruno's posting didn't make it obvious, your code is wide open 
to SQL injection exploits. Google is your friend.

The correct way to remove such vulnerabilities is to use parameterized 
queries, giving the parameters as a tuple second argument to 
cursor.execute().

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ptmcg at austin.rr._bogus_.com  Sun Sep 17 01:01:22 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Sun, 17 Sep 2006 05:01:22 GMT
Subject: tcl list to python list?
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
Message-ID: <CE4Pg.4266$vD2.1873@tornado.texas.rr.com>

<jerry.levan at gmail.com> wrote in message 
news:1158459542.693284.98090 at h48g2000cwc.googlegroups.com...
> Hi,
>
> I have a file that contains a "tcl" list stored as a string.  The list
> members are
> sql commands ex:
> { begin { select * from foo
>                where baz='whatever'}
>  {select * from gooble } end
>  { insert into bar values('Tom', 25) } }
>
> I would like to parse the tcl list into a python list...
>
> Any suggestions ( I am running Tkinter...)
>
> Jerry
>

This is very similar to the Python list parser that comes with pyparsing. 
Adapted to your syntax, this looks something like:

tcl = """sql commands ex:
 { begin { select * from foo
                where baz='whatever'}
  {select * from gooble } end
  { insert into bar values('Tom', 25) } }"""

from pyparsing import *

tcllist = Forward()
element = quotedString | Word(alphas,alphanums+"_") | \
          Combine(Word(nums) + "." + Optional(Word(nums)) ) | Word(nums) | \
          oneOf( list(r"(),.+=`~!@#$%^&*-|\?/><;:") ) | Group( '{' + tcllist 
+ '}' )
tcllist << OneOrMore( element )

import pprint
pprint.pprint( tcllist.parseString(tcl).asList() )

Giving:

['sql',
 'commands',
 'ex',
 ':',
 ['{',
  'begin',
  ['{', 'select', '*', 'from', 'foo', 'where', 'baz', '=', "'whatever'", 
'}'],
  ['{', 'select', '*', 'from', 'gooble', '}'],
  'end',
  ['{', 'insert', 'into', 'bar', 'values', '(', "'Tom'", ',', '25', ')', 
'}'],
  '}']]

The pyparsing home page is at pyparsing.wikispaces.com.

-- Paul




From sjmachin at lexicon.net  Fri Sep  8 00:01:16 2006
From: sjmachin at lexicon.net (John Machin)
Date: 7 Sep 2006 21:01:16 -0700
Subject: help with unicode email parse
In-Reply-To: <1157683777.315563.95960@d34g2000cwd.googlegroups.com>
References: <1157378961.284028.55840@m79g2000cwm.googlegroups.com>
	<1157416665.006114.63170@h48g2000cwc.googlegroups.com>
	<1157425054.822558.228950@74g2000cwt.googlegroups.com>
	<1157465231.163700.279630@h48g2000cwc.googlegroups.com>
	<1157465543.794948.79000@i3g2000cwc.googlegroups.com>
	<1157471114.594330.123480@m73g2000cwd.googlegroups.com>
	<1157471386.436178.151310@m73g2000cwd.googlegroups.com>
	<1157510240.237102.202190@h48g2000cwc.googlegroups.com>
	<1157526684.506238.192580@i3g2000cwc.googlegroups.com>
	<1157601601.965201.95710@e3g2000cwe.googlegroups.com>
	<1157604050.886228.267330@p79g2000cwp.googlegroups.com>
	<1157627312.123904.76620@m73g2000cwd.googlegroups.com>
	<1157683777.315563.95960@d34g2000cwd.googlegroups.com>
Message-ID: <1157688075.918718.63480@b28g2000cwb.googlegroups.com>


neoedmund wrote:
[top-posting corrected]
> John Machin wrote:
> > neoedmund wrote:
> > > i want to get the subject from email and construct a filename with the
> > > subject.
> > > but tried a lot, always got error like this:
> > > UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 4:
> > > ordinal not in range(128)
> > >
> > >
> > > 	msg = email.message_from_string( text )
> > > 	title = decode_header( msg["Subject"] )
> > > 	title= title[0][0]
> > > 	#title=title.encode("utf8")
> >
> > Why is that commented out?
> >
> > > 	print title
> > > 	fn = ""+path+"/"+stamp+"-"+title+".mail"
> > >
> > >
> > > the variable "text"  come from sth like this:
> > > ( header, msg, octets ) = a.retr( i )
> > > text= list2txt( msg )
> > > def list2txt( l ):
> > > 	return reduce( lambda x, y:x+"\r\n"+y, l )
> > >
> > > anyone can help me out? thanks.
> >
> > Not without a functional crystal ball.
> >
> > You could help yourself considerably by (1) working out which line of
> > code the problem occurs in [the traceback will tell you that] (2)
> > working out which string is being decoded into Unicode, and has '\xe9'
> > as its 5th byte. Either that string needs to be decoded using something
> > like 'latin1' [should be specified in the message headers] rather than
> > the default 'ascii', or the code has a deeper problem ...
> >
> > If you can't work it out for yourself, show us the exact code that ran,
> > together with the traceback. If (for example) title is the problem,
> > insert code like:
> >     print 'title=', repr(title)
> > and include that in your next post as well.
> >
> > HTH,
> > John
> thank you John and Diez.
> i found
> fn = "%s/%s-%s.mail"%("d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95' )
> is ok
> fn = "%s/%s-%s.mail"%(u"d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95' )
> results:
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 0:
> ordinal not in range(128)
> So "str"%(param) not accept unicode, only accept byte array?

No, quite the contrary. And that's no "byte array", it's a string.

The first substitution is in unicode, so the "%" operation  ups the
ante from 8-bit string, and tries to decode the remaining
substitutions, using the default ascii codec, which barfs on the 3rd
substitution, which isn't ascii.

If you want fn to be in some 8-bit encoding, then don't put the u in
front of the first substitution.
If you want fn to be in unicode, then you'll have to determine what
encoding you're dealing with, and specify that explicitly.

By the way, what has this "fn" stuff to do with your original problem?

Cheers,
John



From pavlovevidence at gmail.com  Tue Sep 12 22:33:31 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 12 Sep 2006 19:33:31 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
Message-ID: <1158114810.972096.154160@p79g2000cwp.googlegroups.com>

metaperl wrote:
> -->  python -i
> >>> class = "algebra"
>   File "<stdin>", line 1
>     class = "algebra"
>           ^
> SyntaxError: invalid syntax
> >>>
>
>
> Why isn' t the parser smart enough to see that class followed by an
> identifier is used for class definition but class followed by equals is
> a simple assignment?

Hmm.  Someone called "metaPERL" is asking why Python doesn't have a
more complicated grammar.  Why does this not surprise me?  :)

Seriously, Python is that way deliberately.  The developers consider it
a good design to reserve keywords.  It is not in any way considered a
flaw, nor an oversight, nor a case of laziness.

Besides, what you ask is impossible in general.  Consider this code:

return(1,2,3)

Are you returning the tuple (1,2,3), or are you calling the function
"return" with arguments 1,2,3?  There is no context-free grammar in the
universe that can divine which one is meant.  It'd have to use context
to even guess, and in a highly dynamic language like Python, you can
never be wholly sure of the context.  (Is there an identifier named
"return" in scope?  Don't know until you run the code...)


> Also, I had a bug where I tried to set the attributes "user" and "pass"
> in an object but "pass" would not work because it is a reserved word.
> Again pass should be reserved in certain contexts but not others.
>
> Is Python 3k going to fix this sort of thing?

Nope.  PEP 3099 (which lists changes that won't be made in Python
3000), states that the Python grammar will not be more complex than
LL(1), and says that simple grammars are more desirable than complex
ones.  There is no hope of this being "fixed".

In fact, the opposite is going to happen: the one keyword that can
currently moonlight as a symbol, "as", is going to become a full-time
keyword in Python 3000.


> woe be unto the ORMs who try to map database columns to Python
> attributes.

A ha.  First of all, consider whether you ought to be using dictionary
keys instead.  That is, columns["Name"] rather than columns.Name.  It
most cases keys are preferrable, because unless you know what the
columns are ahead of time, you'll be using getattr and setattr to get
at the attributes, which defeats the whole point of attributes.  (And
if you do know what the columns are ahead of time, no need to
automatically map the names.)

The one legitimate use case I can think of for wanting to use
attributes instead of keys is if you intend to have user-supplied
Python code operating on the columns (and even then you should consider
whether the user would be better off using keys).  In this case you're
pretty much stuck with workarounds.

You can automatically rename any keywords when mapping the column
names, and advise the user that colums with keyword names will have
(for example) and appended underscore:

import keyword

def column_attribute_name(name):
    if keyword.iskeyword(name):
        return "%s_" % name
    return name


Carl Banks



From thorsten at thorstenkampe.de  Sat Sep 16 22:00:48 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Sun, 17 Sep 2006 03:00:48 +0100
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
Message-ID: <91dc140d2e1o.1obnt4gbcz79s$.dlg@40tude.net>

* nicolasfr at gmail.com (2006-09-16 18:40 +0100)
> Wildemar Wildenburger wrote:
>> nicolasfr at gmail.com wrote:
>>> I have read many messages of people complaining about the documentation,
>>> it's lack of examples and the use of complicated sentences that you
>>> need to read 10 times before understanding what it means.
>>  >
>> Where have you read that?
>>
>> wildemar
> 
> I don't mean to start a flame war about this but here are some
> reference of people, who like me, don't like the current python doc:
> http://xahlee.org/UnixResource_dir/writ/python_doc.html

*chuckle* *manic laughter* *cough cough* X L - you really made my
day...

Thorsten


From johnjsal at NOSPAMgmail.com  Wed Sep 27 09:55:54 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 13:55:54 GMT
Subject: 2.5 updates for syntax file
In-Reply-To: <1159308351.902162.194510@d34g2000cwd.googlegroups.com>
References: <FOVRg.23$1n3.227@news.tufts.edu>
	<1159217085.967554.196930@i3g2000cwc.googlegroups.com>
	<mailman.739.1159302502.10491.python-list@python.org>
	<1159308351.902162.194510@d34g2000cwd.googlegroups.com>
Message-ID: <KpvSg.33$1n3.436@news.tufts.edu>

Fuzzyman wrote:

>> Who is using FAR and isn't happy ?
> 
> What is FAR ?

I'm glad I'm not the only one who doesn't know.... :)


From fredrik at pythonware.com  Wed Sep 27 12:52:37 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 18:52:37 +0200
Subject: Why don't optional mutable objects show up in vars(func)?
In-Reply-To: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
References: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
Message-ID: <efea8l$iaq$1@sea.gmane.org>

dannycolligan at gmail.com wrote:

> So I just got bitten by the "don't use a mutable object as an optional
> argument" gotcha.  I now realize that for this function:
> 
>>>> def func(x, y=[]):
> ...     y.append(x)
> ...     print y
> ...
> 
> y is initialized when the function is imported, not when the function
> is executed.  However, if this is the case, then why is y not showing
> up as an attribute of func?

 >>> func.func_defaults
([],)

</F>



From richardjones at optushome.com.au  Mon Sep 18 17:57:48 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Tue, 19 Sep 2006 07:57:48 +1000
Subject: Cheese Shop Registration error
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
Message-ID: <450f165c$0$5111$afc38c87@news.optusnet.com.au>

alefnula at gmail.com wrote:
> The Key ID that the kgpg shows. I tried to paste the key returned by
> the quiery on the keyserver. but it also doesn't work. I tried
> everything that has any connection with the key, but everything fails.
> 
> By the way the key is: 6A61E3AD

Here is the code that could generate that error message:

                if len(gpgid) != 8:
                    raise FormError, 'GPG key ID is invalid'
                try:
                    int(gpgid)
                except ValueError:
                    raise FormError, 'GPG key ID is invalid'

So I suspect there might have been some cut-n-paste error. Check that you've
not pasted in any whitespace that could confuse the first test.


    Richard



From ptmcg at austin.rr._bogus_.com  Mon Sep 11 12:13:58 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 11 Sep 2006 16:13:58 GMT
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
	<ee3vme$cjj$1@panix3.panix.com>
Message-ID: <aXfNg.17107$o42.10827@tornado.texas.rr.com>

"Aahz" <aahz at pythoncraft.com> wrote in message 
news:ee3vme$cjj$1 at panix3.panix.com...
> In article <4505707E.2080804 at redlinepy.com>,
> Once Python 2.5 comes out, I recommend using sqlite because it avoids
> the mess that dbm can cause.
> -- 
> Aahz (aahz at pythoncraft.com)           <*> 
> http://www.pythoncraft.com/

and if you don't want to wait for 2.5, you can install pysqlite without too 
much trouble - and it is *very* easy to use!

For SQLite design and data browsing, check out the SQLite Browser at 
http://sqlitebrowser.sourceforge.net.

-- Paul




From cjlesh at gmail.com  Mon Sep 11 13:14:58 2006
From: cjlesh at gmail.com (cjl)
Date: 11 Sep 2006 10:14:58 -0700
Subject: Running python from a usb drive
Message-ID: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>

Hey:

I am trying to run python from a usb drive under windows xp. I
installed python "for this user" on to a machine, then copied the
entire Python24 directory to the usb drive.

I have the following in a batch file at the root of the drive:

@path=%PATH%;%CD%Python24;%CD%Python24\libs;%CD%Python24\Scripts;%CD%Python24\Lib\site-packages;%CD%Python24\DLLs
@set pythonpath = %CD%Python24
@cmd

When I double click the file and type 'python' at the prompt I am in a
working python environment, and I am able to import modules in the
site-packages directory (in this case, django).

However, when I run a script directly from the cmd prompt (in this case
'django-admin.py' the script runs, but fails to import modules from the
site-packages directory.

Is there a command line option to python.exe or an environment variable
I can set to remedy this?

Any other thoughts?

Thanks in advance,
CJL



From rhymes at myself.com  Thu Sep 14 16:10:37 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 14 Sep 2006 22:10:37 +0200
Subject: Why not event-driven packages in other than the main thread?
References: <eeb6go$kfk$1@news.uit.no> <4msmn3F7ni7iU1@individual.net>
	<eebaua$m0d$1@news.uit.no>
	<1hlnmz2.p8f1a11ne4f9gN%rhymes@myself.com>
	<4mtokoF7nljsU1@individual.net>
Message-ID: <1hlodk5.1glzxv914qxmrsN%rhymes@myself.com>

Bjoern Schliessmann <usenet-mail-0306.20.chr0n0ss at spamgourmet.com>
wrote:
> What's not real about Tkinter's?

It's not a custom reactor as GTK's AFAIK

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From ty.2006 at yahoo.com  Fri Sep 22 14:44:23 2006
From: ty.2006 at yahoo.com (T)
Date: 22 Sep 2006 11:44:23 -0700
Subject: Newbie RE question
Message-ID: <1158950663.902262.235410@m73g2000cwd.googlegroups.com>

I would like to search for any of the strings in r'/\:*?"<>|' in a
string using RE module.  Can someone tell me how?

Thanks!



From hg at nospam.com  Mon Sep 25 17:25:56 2006
From: hg at nospam.com (hg)
Date: Mon, 25 Sep 2006 16:25:56 -0500
Subject: ruby %w equivalent
In-Reply-To: <1159217673.536593.210310@d34g2000cwd.googlegroups.com>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<WVWRg.4782$Go3.723@dukeread05> <f0XRg.4783$Go3.4404@dukeread05>
	<1159217673.536593.210310@d34g2000cwd.googlegroups.com>
Message-ID: <uWXRg.4785$Go3.3083@dukeread05>

MonkeeSage wrote:
> hg wrote:
>> But today ? what is the cost of replacing %w("blah blah") by
>> Hi_I_Want_To_Split_The_String_That_Follows( "blah blah")
> 
> How about r'blah', u'blah', """blah""", and '''blah'''. :)
> 
> Regards,
> Jordan
> 


Some truth to that !


From jeremy+complangpython at jeremysanders.net  Thu Sep 21 04:53:00 2006
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Thu, 21 Sep 2006 09:53:00 +0100
Subject: Is it possible to save a running program and reload next time ?
References: <mailman.386.1158824225.10491.python-list@python.org>
Message-ID: <eetjtc$2dm$1@gemini.csx.cam.ac.uk>

fdu.xiaojf at gmail.com wrote:

> I have a program which will continue to run for several days. When it is
> running, I can't do anything except waiting because it takes over most
> of the CUP time.
> 
> Is it possible that the program can save all running data to a file when
> I want it to stop, and can reload the data and continue to run from
> where it stops when the computer is free ?

For Linux (and other Unix like OSs), there are several "checkpointing"
libraries available which allow programs to be saved to disk, and restarted
later.

If the other suggestions people have given to you (STOPping and CONTinuing
processes), or sleep statements, or saving state, don't work investigate
these.

e.g. http://www.cs.wisc.edu/~zandy/ckpt/

These programs have limitations on what can be restored (e.g. threads,
shared memory, network connections...). I don't know which ones work with
python.

-- 
Jeremy Sanders
http://www.jeremysanders.net/


From seberino at spawar.navy.mil  Thu Sep 28 15:22:06 2006
From: seberino at spawar.navy.mil (seberino at spawar.navy.mil)
Date: 28 Sep 2006 12:22:06 -0700
Subject: Recursive descent algorithm able to parse Python?
Message-ID: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>

I'm a compiler newbie and curious if Python grammar is able to
be parsed by a recursive descent parser or if it requires
a more powerful algorithm.

Chris



From steven.bethard at gmail.com  Wed Sep 27 20:00:27 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 27 Sep 2006 18:00:27 -0600
Subject: optparse
In-Reply-To: <C6nSg.79$M31.50@newsfe05.lga>
References: <C6nSg.79$M31.50@newsfe05.lga>
Message-ID: <4eOdnerJlosGjYbYnZ2dnUVZ_umdnZ2d@comcast.com>

rick wrote:
> Consider the following piece of code:
> 
> parser = optparse.OptionParser(usage="usage: %prog <input filename> 
> <output filename> [options]", add_help_option=False)
> parser.add_option("-d", type="string", action="store", dest="DELIM", 
> default="|", help="single character delimiter in quotes (default: |)")
> (options, args) = parser.parse_args()
> 
> 
> Is there any way I can add help for the arguments (<input filename> and 
> <output filename>) in the same table that optparse generates above the 
> options section. Ideally, I would like the output as:
> 
> ======================================================
> usage: DelimTOFixedWidth.py <input filename> <output filename> [options]
> 
> required:
>  input filename     name of the delimited input file
>  output filename   name of fixed-width output file
> 
> options:
>  -d DELIM  single character delimiter in quotes (default: |)
> ======================================================
> 
> Is that possible using optparse?

Not easily, but that's exactly what the argparse_ module is for::

     >>> import argparse
     >>> parser = argparse.ArgumentParser(add_help=False)
     >>> parser.add_argument('-d', dest='DELIM', default='|',
     ...     help='character delimiter in quotes (default: %(default)s)')
     >>> parser.add_argument('input_filename',
     ...     help='name of the delimited input file')
     >>> parser.add_argument('output_filename',
     ...     help='name of fixed-width output file')
     >>> parser.print_help()
     usage: tasks.py [-d DELIM] input_filename output_filename

     positional arguments:
       input_filename   name of the delimited input file
       output_filename  name of fixed-width output file

     optional arguments:
       -d DELIM         character delimiter in quotes (default: |)

Note that argparse_ also figures out the correct usage message for you.

.. _argparse: http://argparse.python-hosting.com/

STeVe


From MonkeeSage at gmail.com  Thu Sep 28 14:49:00 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 28 Sep 2006 11:49:00 -0700
Subject: Resuming a program's execution after correcting error
References: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
	<efgjgo$pbm$1@news.albasani.net>
Message-ID: <1159469340.286309.74130@i42g2000cwa.googlegroups.com>

Georg Brandl wrote:
> As I said before, this can be done by finding out where the error is raised,
> what the cause is and by inserting an appropriate try-except-statement in
> the code.

I could be mistaken, but I *think* the OP is asking how to re-enter the
stack at the same point as the exception exited from and continue with
the execution as if the exception never happened. AFAIK, that isn't
possible; however, given that he has a file to work from that indicates
a portion of the state at the time of the exception, I think he may be
able simulate that kind of functionality by reading in the file on
exception and then returning a call to the function where the exception
occured with the data from the file. Something like this mockup:

def faulty_function(a, b, c=None):
  if not c:
    c = 0
  try:
    # modify c, write c to file...
    # oops hit an exception
    c += a / b
  except:
    # read from the file here
    # c = ...
    # and fix the error
    b += 1
    return faulty_function(a, b, c)
  return c

print faulty_function(2, 0) # => 2

Of course, it's probably much better to just fix the code and avoid the
exception in the first place. ;)

Regards,
Jordan



From gerold.penz at tirol.utanet.at  Mon Sep 18 00:01:13 2006
From: gerold.penz at tirol.utanet.at (Gerold Penz)
Date: Mon, 18 Sep 2006 06:01:13 +0200
Subject: Python programs always open source?
In-Reply-To: <450d07e1$0$19729$88260bb3@free.teranews.com>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
Message-ID: <eel5lu$2u4$1@newsreader2.utanet.at>

Guy Fawkes schrieb:
> Is it possible to make an executable?

Hi GF!

http://www.python.net/crew/atuining/cx_Freeze/

Regards,
Gerold
:-)

-- 
________________________________________________________________________
Gerold Penz - bcom - Programmierung
     gerold.penz at tirol.utanet.at | http://gerold.bcom.at | http://sw3.at
Ehrliche, herzliche Begeisterung ist einer der
     wirksamsten Erfolgsfaktoren. Dale Carnegie


From rupole at hotmail.com  Fri Sep  1 00:12:12 2006
From: rupole at hotmail.com (Roger Upole)
Date: Fri, 1 Sep 2006 00:12:12 -0400
Subject: Questoin about outlook calendar
References: <mailman.10199.1157042585.27775.python-list@python.org>
Message-ID: <1157083378_4549@sp6iad.superfeed.net>


"Gallagher, Tim F (NE)" <Tim.Gallagher at gd-ais.com> wrote in message 
news:mailman.10199.1157042585.27775.python-list at python.org...


"Gallagher, Tim (NE)" wrote :
> import win32com.client
> import time
> import datetime
>
> outlook = win32com.client.Dispatch("Outlook.Application")
> namespace = outlook.GetNamespace("MAPI")
> appointments = namespace.GetDefaultFolder(9).Items
>
> #print appointments.count
> x = 4  # This is a number for one of the calendar entries
> print appointments[x]
> print appointments[x].start
> print appointments[x].end
> print appointments[x].RecurrenceState
> print appointments[x].EntryID
> print appointments[x].IsRecurring
> recItem = appointments[x].GetRecurrencePattern


> GetRecurrencePattern is a method, so at this point recItem
> is a reference to the method itself, rather than the result of calling
it.
> You'll need to add parens to actually call it.
>
>       Roger



> OK, I am a little lost, I do not want anyone doing my work for me but
> can you give me an example.
>
> I am using this as an example to learn python.
>
> Thanks
> -T

recItem = appointments[x].GetRecurrencePattern()
Note the parens on the end.  It's very easy to forget
these when translating from VB, which doesn't
require them to call a method.

        Roger




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From fredrik at pythonware.com  Thu Sep 28 01:41:44 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 07:41:44 +0200
Subject: XSLT speed comparisons
In-Reply-To: <1159395309.166081.23130@m7g2000cwm.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
Message-ID: <effnan$lt2$1@sea.gmane.org>

Ross Ridge wrote:


>> The problem is, the Python version is (at a guess) about three times
>> slower than the ASP one.
> 
> It could just be that 4suite is slower than MSXML.  If so, you can use
> MSXML in Python if you want.

or use lxml:

     http://codespeak.net/lxml/

(does anyone have any lxml/libxslt vs. msxml benchmarks, btw?)

</F>



From asterocean at gmail.com  Sun Sep 17 22:59:45 2006
From: asterocean at gmail.com (astarocean)
Date: 17 Sep 2006 19:59:45 -0700
Subject: strange result with json-server & zop
In-Reply-To: <mailman.174.1158407715.10491.python-list@python.org>
References: <8654bee00609160440o4088c4ffxec44043788314aaf@mail.gmail.co m>
	<1158402531.889644.151000@m7g2000cwm.googlegroups.com>
	<7.0.1.0.0.20060916074836.040617f8@yahoo.com.ar>
	<8654bee00609160440o4088c4ffxec44043788314aaf@mail.gmail.com>
	<mailman.174.1158407715.10491.python-list@python.org>
Message-ID: <1158548385.220258.74580@b28g2000cwb.googlegroups.com>

error finnaly been eliminated.
after install placelesstranslationservice product, everything back to
normal.
but i don't know why.

the program runs well under a server with zope2.9.1 ,
for i got another server and i wanna do a global update ,so a new zope
version 2.9.4 and all other new version were installed and the program
was exported from old server and imported in new server . but i didn't
install placelesstranslationservice product, it seems nofair with this
program.that's why this error happen.

really strange turn out , i guess there's something wrong with zexp
mechanic , for it seemed program exported and imported are binary code
not source code with objects like scripts, so some stein code remains.

thank you, Gabrial.


Gabriel Genellina wrote:
> At Saturday 16/9/2006 08:40, asterocean wrote:
>
> >>But this is not UTF-8; looks like UTF-16 with 0x00 converted to 0x20
> >>(space). I'd look at where the body comes from, or ask on the Zope
> >>list for the right way to use dtml-mime.
> >
> >i've try with UTF-8 , error remains . when the script is called
> >directly from http request , it went well. so this should not be the
> >problem. the real problem is when it is called from a json-rpc, the
> >error happened
>
> Try to look at what you *get* as the body from xmlrpc, if it comes
> wrong, will go wrong to the email.
>
> >>Anyway, why are you using dtml-mime and such? Using the email package
> >>is easier and a lot more powerful.
> >i'm using zope & jsonserver & maildrop to develop this part , so the
> >main problem how to send mail with json-rpc structure.
>
> You can use the email package from inside Zope; an external method will do.
>
>
>
> Gabriel Genellina
> Softlab SRL
>
>
>
>
>
> __________________________________________________
> Pregunt?. Respond?. Descubr?.
> Todo lo que quer?as saber, y lo que ni imaginabas,
> est? en Yahoo! Respuestas (Beta).
> ?Probalo ya! 
> http://www.yahoo.com.ar/respuestas



From daniel at mfaconsulting.com  Tue Sep 19 04:59:03 2006
From: daniel at mfaconsulting.com (daniel at mfaconsulting.com)
Date: 19 Sep 2006 01:59:03 -0700
Subject: ImportError: Don't know how to import XYZ (type code 3)
Message-ID: <1158656343.331729.296610@m73g2000cwd.googlegroups.com>

Trying to load a C++ module that is wrapped with boost_python and get
the error

ImportError: Don't know how to import XYZ (type code 3)

I think type code 3 is means that it is a C++ wrapped .pyd.

....I have know idea what that means or how to fix it.

Any ideas?

D.



From steve at holdenweb.com  Sun Sep 10 22:17:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 03:17:22 +0100
Subject: Two ethernet cards/networks (still)
In-Reply-To: <hPadnWV-Vf4I6ZnYnZ2dnUVZ_o6dnZ2d@nmt.edu>
References: <M6CdnZKD9p1rwZ3YnZ2dnUVZ_sednZ2d@nmt.edu>	<mailman.140.1157668455.5279.python-list@python.org>
	<hPadnWV-Vf4I6ZnYnZ2dnUVZ_o6dnZ2d@nmt.edu>
Message-ID: <ee2gu8$1ur$1@sea.gmane.org>

Bob Greschke wrote:
> "Steve Holden" <steve at holdenweb.com> wrote in message 
> news:mailman.140.1157668455.5279.python-list at python.org...
> 
>>Bob Greschke wrote:
>>The reason that "binding to a specific address is almost never used for a 
>>client" is because it's the server destination address that the network 
>>layer will use to determine which interface is used to communicate with a 
>>specific server host.
>>
>>Suppose your network setup looks like this:
>>
>>
>>+-------------------+------------------------+ Network A
>>                    |
>>                    |
>>                    |
>>                    | 192.168.12.34/24
>>                    |
>>           +--------+--------+
>>           |                 |
>>           |                 |
>>           |     YOUR HOST   |
>>           |                 |
>>           |                 |
>>           +--------+--------+
>>                    |
>>                    | 201.46.34.22/24
>>                    |
>>                    |
>>                    |
>>+-------------------+----------+-------------+ Network B
>>                               |
>>                               +
>>                      +--------+--------+
>>                      |      router     |
>>                      |   to internet   |
>>                      +-----------------+
>>
>>If your client program tries to communicate with, say, 192.168.12.18 then 
>>by the IP network layer will automatically select network A as the medium, 
>>since the destination is local to that network. If you then want to 
>>communicate the results to 201.46.34.118 then network B will be used, 
>>again because the destination is local to that network (its first 24 bits 
>>are the same as the first 24 bits of the destination).
>>
>>In this case the router on network B will almost certainly be the default 
>>route for the host, as it's the way to everywhere else.
>>
>>This isn't really Python-related, so I hope it answers your question!
>>
>>regards
>> Steve
>>-- 
>>Steve Holden       +44 150 684 7255  +1 800 494 3119
>>Holden Web LLC/Ltd          http://www.holdenweb.com
>>Skype: holdenweb       http://holdenweb.blogspot.com
>>Recent Ramblings     http://del.icio.us/steve.holden
>>
> 
> 
> Nice explanation!  Thanks!  You mean I don't have to do anything special?? 
> That sounds suspiciously easy. :)
> 
> To muddy the water a little the equipment I want to get info from (some 
> seismic digitizing/recording equipment) comes back to us from the field with 
> the IP addresses set to whatever that last user needed.  What we do now is 
> put the unit(s) on the bench, connect them to the private network and use a 
> broadcast address (like 255.255.255.255) and a specific port number to query 
> and see who is connected.  Then we (a program) can get in (login, basically) 
> and reset the all of the IPs to the same subnet to proceed with checkout, 
> calibration, etc.  We have to disconnect from (or disable the card for) the 
> outside network when we do this discovery or else the program discovers all 
> of these instruments that we have running in the building (monitoring a 
> seismic pier, in people's offices, etc.).  I'm guessing here we will still 
> need to do this?  It's not a biggie, but finding a way to not have to do 
> this was what started this whole thing.  Once the program knows which 
> instruments it found on the private network it doesn't matter.  It will only 
> work on those ones.
> 

Ah, so you want to do a limited broadcast over a single interface (the 
one for the private network) to avoid having to disable the other 
interface? That's a different kettle of fish.

I suspect you could do it by binding the local socket to a single 
address, but I'd need to play around to get it right. Maybe someone else 
has already done this?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From Bulkan at gmail.com  Fri Sep  1 02:54:35 2006
From: Bulkan at gmail.com (placid)
Date: 31 Aug 2006 23:54:35 -0700
Subject: genetic algorithms package for python ?
In-Reply-To: <6hsfyfcrhsn.fsf@koollbox.kooll.org>
References: <mailman.10186.1157036336.27775.python-list@python.org>
	<6hsfyfcrhsn.fsf@koollbox.kooll.org>
Message-ID: <1157093675.370579.187440@i42g2000cwa.googlegroups.com>


Thomas Samson wrote:
> Xiao Jianfeng <fdu.xiaojf at gmail.com> writes:
>
> > Hi all,
> >
> > I am looking for a genetic algorithms package for Python.
> >
> > I have googled the web before posting and found some links. The link
> > of  pygene(http://www.freenet.org.nz/python/pygene) cannot be opened.
>
> Strange, works for me...
>
> >
> > I also tried the recipe on ASPN, but it is too simple for my
> > application, and the ga model in SciPy, which is in testing in the
> > "sandbox".
> >
> > Are there any more genetic algorithms packages for Python ?
> >
>
> I am not (at all!) an specialist in genetic algorithms, but here are
> some links :
>
> http://pygp.sourceforge.net/
> http://packages.qa.debian.org/g/genetic.html
> and of course,
> http://www.freenet.org.nz/python/pygene/


GP: Genetic Programming
(http://en.wikipedia.org/wiki/Genetic_Programming)

this is different to Genetic Algorithms
(http://en.wikipedia.org/wiki/Genetic_algorithms)

Cheers



From johnjsal at NOSPAMgmail.com  Thu Sep 28 16:31:37 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 20:31:37 GMT
Subject: preemptive OOP?
In-Reply-To: <mailman.904.1159473884.10491.python-list@python.org>
References: <e9USg.47$1n3.432@news.tufts.edu>
	<451c1a6d$1@nntp.zianet.com>	<xkVSg.49$1n3.537@news.tufts.edu>
	<mailman.904.1159473884.10491.python-list@python.org>
Message-ID: <JiWSg.50$1n3.567@news.tufts.edu>

Steve Holden wrote:

> However, if you want to simplify the code, you could start by saying
> 
>     myNotebook = wx.Notebook
>

I don't understand. Is that just a name change in the code?


From brendandetracey at yahoo.com  Thu Sep 21 10:20:40 2006
From: brendandetracey at yahoo.com (Brendan)
Date: 21 Sep 2006 07:20:40 -0700
Subject: Python 2.5 WinXP AMD64
In-Reply-To: <45129e77$0$23923$626a54ce@news.free.fr>
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
Message-ID: <1158848440.069081.51970@h48g2000cwc.googlegroups.com>

Thanks.

Christophe wrote:
> Brendan a ?crit :
> > Hello,
> > I just tried to use the Windows XP installer for Python 2.5 AMD64 but I
> > get the error message: "Installation package not supported by processor
> > type"
> >
> > I am running Windows XP Pro on an AMD Athon 64 Processor.
> >
> > Do I need to have a 64-bit OS to use this version?
> 
> To be exact, you need a 64bit Windows OS on a 64bit cpu.



From sam at nuevageorgia.com  Mon Sep 11 01:18:46 2006
From: sam at nuevageorgia.com (SamFeltus)
Date: 10 Sep 2006 22:18:46 -0700
Subject: Flash Python
Message-ID: <1157951926.041880.67160@q16g2000cwq.googlegroups.com>

Comical new updated link

http://sonomasunshine.com/sonomasunshine/index_sunshine.php?pagename=ufo_and_more



From news at dogstar.ukfsn.org  Wed Sep 27 13:52:35 2006
From: news at dogstar.ukfsn.org (John Martin)
Date: Wed, 27 Sep 2006 18:52:35 +0100
Subject: pythonol
Message-ID: <pan.2006.09.27.17.52.35.815812@dogstar.ukfsn.org>

'pythonol' is a program for learning spanish. I think it's a really great
program. Unfortunately it ceased to work when I moved to SuSE 10 and 10.1 .
The author makes it clear on her website that she has devoted all the time
she's prepared to and won't maintain it. I think it's a shame as it's a
valuable educational tool. Sadly I know bugger all about python, this is
the error I get when running it.
---------------------------------------------------------------
/usr/share/Pythonol/sqlite/__init__.py:1: RuntimeWarning: Python C API version 
mismatch for module _sqlite: This Python has API version 1012, module
_sqlite has version 1011.
  import _sqlite
./pythonolui.py:137: DeprecationWarning: use gtk.UIManager
  itemf=ItemFactory(MenuBar, "<main>", ag)
./pythonolui.py:392: DeprecationWarning: use gtk.ComboBoxEntry
  conjcombo=Combo()
./pythonolui.py:398: Warning: unsupported arithmetic operation for flags
type
  conjtable.attach(conjcombo,1,2,1,2,(EXPAND+FILL),(0),0,0)
Traceback (most recent call last):
  File "./pythonolui.py", line 1945, in ?
    run()
  File "./pythonolui.py", line 1941, in run
    pythonolwin()
  File "./pythonolui.py", line 398, in __init__
    conjtable.attach(conjcombo,1,2,1,2,(EXPAND+FILL),(0),0,0)
TypeError: flag values must be strings, ints, longs, or tuples
------------------------------------------------------------------ 
Does anything stand out which might be fixable?

tia
-- 
John




From http  Tue Sep  5 16:19:03 2006
From: http (Paul Rubin)
Date: 05 Sep 2006 13:19:03 -0700
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
	<mailman.19.1157468331.5279.python-list@python.org>
Message-ID: <7xslj66p8o.fsf@ruckus.brouhaha.com>

skip at pobox.com writes:
> It was removed at one point in the dim, dark past (circa Python 1.4) on an
> experimental basis.  Aside from the huge amount of work, it resulted in
> significantly lower performance for single-threaded apps (that is, the
> common case).

That's probably because they had to put locking and unlocking around
every access to a reference count.  A real GC might have fixed that.


From fredrik at pythonware.com  Thu Sep 21 04:05:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 21 Sep 2006 10:05:32 +0200
Subject: get process id...
In-Reply-To: <1158824998.589895.36630@m7g2000cwm.googlegroups.com>
References: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>	<1158769823.998456.171070@b28g2000cwb.googlegroups.com>
	<1158824998.589895.36630@m7g2000cwm.googlegroups.com>
Message-ID: <eeth4c$pbr$3@sea.gmane.org>

billie wrote:

>> under linux, do:
 >
>>   import os
>>   os.getpid()
> 
> Under Windows:
 >
> import ctypes
> ctypes.windll.kernel32.GetCurrentProcessId()

getpid() works just fine on Windows too:

 >>> import ctypes
 >>> ctypes.windll.kernel32.GetCurrentProcessId()
1916
 >>> import os
 >>> os.getpid()
1916

</F>



From aisaac0 at verizon.net  Mon Sep 11 09:23:08 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 11 Sep 2006 13:23:08 GMT
Subject: best small database?
Message-ID: <0rdNg.6440$c22.5757@trnddc07>

I have no experience with database applications.
This database will likely hold only a few hundred items,
including both textfiles and binary files.

I would like a pure Python solution to the extent reasonable.

Suggestions?

Thank you,
Alan Isaac




From rtw at freenet.co.uk  Mon Sep  4 14:53:05 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Mon, 04 Sep 2006 13:53:05 -0500
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<edhl07$b2t$1@news.sap-ag.de>
Message-ID: <Xns9834CA4B9668FrtwfreenetREMOVEcouk@216.196.109.145>

Daniel Dittmar wrote in news:edhl07$b2t$1 at news.sap-ag.de in 
comp.lang.python:

> - removing reference counting and relying on garbage collection alone 
> will break many Python applications (because they rely on files being 
> closed at end of scope etc.)
> 

They are already broken on at least 2 python implementations, so
why worry about another one.

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From chris.cavalaria at free.fr  Mon Sep 25 10:11:38 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Mon, 25 Sep 2006 16:11:38 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
Message-ID: <4517e385$0$10996$636a55ce@news.free.fr>

Steven D'Aprano a ?crit :
> By memory, in an thread about the same topic just a few days ago, Fredrik
> Lundh posted a link to Perl's FAQs that suggests a method for "validating"
> email addresses: treat it like a password and ask the user to type it
> twice. That will protect against simple typos and input errors.

I hate that thing. When I see that, I type my email once and copy/paste 
into the second edit box. This is useless AND annoying at the same time.


From felipe.lessa at gmail.com  Mon Sep 11 20:28:46 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Mon, 11 Sep 2006 21:28:46 -0300
Subject: How to stop an [Rpyc] server thread?
In-Reply-To: <1157697488.301555.79150@i42g2000cwa.googlegroups.com>
References: <1157658782.629267.250160@b28g2000cwb.googlegroups.com>
	<1157697488.301555.79150@i42g2000cwa.googlegroups.com>
Message-ID: <c2701f5c0609111728k772aae8j86b603bc3ab3c5e@mail.gmail.com>

7 Sep 2006 23:38:08 -0700, Tal Einat <tal.no.no.spam at gmail.com>:
> > I'm not an expert in socket programming, but I can't see the
> > correlation between the "listener socket" being in timeout mode and a
> > different behavior the other sockets..
> > Anyhow the main goal is being able to shut down the thread of the rpyc
> > server, any other way is an appreciated suggestion.
>
> Now to the real issue. I've also had such weird problems with socket
> timeout in Python. The best workaround I found is to use select() to
> check for activity on the socket(s), and use select()'s timeout
> mechanism. So far, this has worked without a hitch on both WindowsXP
> and Solaris Sparc9 installations.

Twisted[1] is the answer. I've never seen a better framework for using
sockets, it's painless.  I created two versions of the same protocol
(both client and server), one using sockets + select, another using
Twisted. The sockets version had 2x lines than the Twisted one and
lots of bugs. Sockets may fail *anywhere* in your code, and Twisted
takes care of all details for you[2]. Simply Sweet.

Cheers,

[1] http://www.twistedmatrix.com/
[2] Of couse this is just *one* advantage of the Twisted framework...

PS.: No, I wasn't paid for this e-mail ;-)

-- 
Felipe.


From paddy3118 at netscape.net  Sun Sep 17 00:57:01 2006
From: paddy3118 at netscape.net (Paddy)
Date: 16 Sep 2006 21:57:01 -0700
Subject: tcl list to python list?
In-Reply-To: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
Message-ID: <1158469021.176760.186990@e3g2000cwe.googlegroups.com>


jerry.levan at gmail.com wrote:
> Hi,
>
> I have a file that contains a "tcl" list stored as a string.  The list
> members are
> sql commands ex:
>  { begin { select * from foo
>                 where baz='whatever'}
>   {select * from gooble } end
>   { insert into bar values('Tom', 25) } }
>
> I would like to parse the tcl list into a python list...
>
> Any suggestions ( I am running Tkinter...)
>
> Jerry
Well, if you know TCL then read the bit about how to write a python
list:
 (http://docs.python.org/tut/node5.html#SECTION005140000000000000000)
Then write a TCL function to traverse your TCL list and write it out in
the python format.

Another suggestion might be to use CSV as an intermediary:
  http://tcllib.sourceforge.net/doc/csv.html
  http://docs.python.org/dev/lib/module-csv.html

Now if you know Python and not TCL ... :-)

- Paddy.



From Eric_Dexter at msn.com  Sun Sep  3 22:50:19 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 3 Sep 2006 19:50:19 -0700
Subject: newbe question about removing items from one file to another file
In-Reply-To: <1156897952.783797.5540@p79g2000cwp.googlegroups.com>
References: <1156714534.318183.326220@i3g2000cwc.googlegroups.com>
	<1156754881.496114.62170@b28g2000cwb.googlegroups.com>
	<mailman.10054.1156860158.27775.python-list@python.org>
	<1156895504.960976.226950@i3g2000cwc.googlegroups.com>
	<1156897952.783797.5540@p79g2000cwp.googlegroups.com>
Message-ID: <1157338219.362776.181440@i3g2000cwc.googlegroups.com>


Simon Forman wrote:
> Eric_Dexter at msn.com wrote:
> > Anthra Norell wrote:
> > > Dexter,
> > >
> > > I looked at the format specification. It contains an example:
> > >
> > > -----------------------------------------------
> > >
> > > <CsoundSynthesizer>;
> > >   ; test.csd - a Csound structured data file
> > >
> > > <CsOptions>
> > >   -W -d -o tone.wav
> > > </CsOptions>
> > >
> > > <CsVersion>    ;optional section
> > >   Before 4.10  ;these two statements check for
> > >   After 4.08   ;   Csound version 4.09
> > > </CsVersion>
> > >
> > > <CsInstruments>
> > >   ; originally tone.orc
> > >   sr = 44100
> > >   kr = 4410
> > >   ksmps = 10
> > >   nchnls = 1
> > >   instr   1
> > >       a1 oscil p4, p5, 1 ; simple oscillator
> > >          out a1
> > >     endin
> > > </CsInstruments>
> > >
> > > <CsScore>
> > >   ; originally tone.sco
> > >   f1 0 8192 10 1
> > >   i1 0 1 20000 1000 ;play one second of one kHz tone
> > >   e
> > > </CsScore>
> > >
> > > </CsoundSynthesizer>
> > >
> > > -------------------------------------
> > >
> > > If I understand correctly you want to write the instruments block to a file (from <CsInstruments> to </CsInstruments>)? Right? Or
> > > each block to its own file in case there are several?. You want your code to generate the file names? Can you confirm this or
> > > explain it differently?
> > >
> > > Regards
> > >
> > > Frederic
> > >
> > >
> > > ----- Original Message -----
> > > From: <Eric_Dexter at msn.com>
> > > Newsgroups: comp.lang.python
> > > To: <python-list at python.org>
> > > Sent: Monday, August 28, 2006 10:48 AM
> > > Subject: Re: newbe question about removing items from one file to another file
> > >
> > >
> > > >
> > > > Anthra Norell wrote:
> > > > > Eric,
> > > > >    Having played around with problems of this kind for quite some time I find them challenging even if I don't really have time
> > > to
> > > > > get sidetracked. Your description of the problem makes it all the more challenging, because its 'expressionist' quality adds the
> > > > > challenge of guessing what you mean.
> > > > >    I'd like to take a look at your data, if you would post a segment on which to operate, the same data the way it should look
> > > in
> > > > > the end. In most cases this is pretty self-explanatory. Explain the points that might not be obvious to a reader who knows
> > > nothing
> > > > > about your mission.
> > > > >
> > > > > Frederic
> > > > >
> > > > > ----- Original Message -----
> > > > > From: <Eric_Dexter at msn.com>
> > > > > Newsgroups: comp.lang.python
> > > > > To: <python-list at python.org>
> > > > > Sent: Sunday, August 27, 2006 11:35 PM
> > > > > Subject: newbe question about removing items from one file to another file
> > > > >
> > > > >
> > > > > > def simplecsdtoorc(filename):
> > > > > >     file = open(filename,"r")
> > > > > >     alllines = file.read_until("</CsInstruments>")
> > > > > >     pattern1 = re.compile("</")
> > > > > >     orcfilename = filename[-3:] + "orc"
> > > > > >     for line in alllines:
> > > > > >         if not pattern1
> > > > > >              print >>orcfilename, line
> > > > > >
> > > > > > I am pretty sure my code isn't close to what I want.  I need to be able
> > > > > > to skip html like commands from <defined> to <undefined> and to key on
> > > > > > another word in adition to </CsInstruments> to end the routine
> > > > > >
> > > > > > I was also looking at se 2.2 beta but didn't see any easy way to use it
> > > > > > for this or for that matter search and replace where I could just add
> > > > > > it as a menu item and not worry about it.
> > > > > >
> > > > > > thanks for any help in advance
> > > > > >
> > > > > > --
> > > > > > http://mail.python.org/mailman/listinfo/python-list
> > > >
> > > > sorry about that this is a link to a discription of the format
> > > > http://kevindumpscore.com/docs/csound-manual/commandunifile.html
> > > > It is possible to have more than one instr defined in an .csd file so I
> > > > would need to look for that string also if I want to seperate the
> > > > instruments out.
> > > >
> > > > http://www.dexrow.com
> > > >
> > > > --
> > > > http://mail.python.org/mailman/listinfo/python-list
> >
> > I need to take it between the blocks only I also need to make sure I
> > only take one instrument
> > defined in this example with the code instr   1 I also need the code
> >
> > <CsInstruments>
> > >   ; originally tone.orc
> > >   sr = 44100
> > >   kr = 4410
> > >   ksmps = 10
> > >   nchnls = 1
> >
> > regardless of what instrument I take.  The function would have to
> > except the instrument number as an argument
> >
> > http://www.dexrow.com
>
> Using BeautifulSoup and the interactive interpreter, I figured out the
> following script in about 15 minutes:
>
> # s is a string containing the example file from above.
>
> from BeautifulSoup import BeautifulStoneSoup
>
> soup = BeautifulStoneSoup(s)
> csin = soup.contents[0].contents[5]
> lines = csin.string.splitlines()
>
> print csin.string
>
> It prints:
>
>   ; originally tone.orc
>   sr = 44100
>   kr = 4410
>   ksmps = 10
>   nchnls = 1
>   instr   1
>       a1 oscil p4, p5, 1 ; simple oscillator
>          out a1
>     endin
>
>
> and of course you could say "lines = csin.string.splitlines()" to get a
> list of the lines.  That doesn't take you all the way, but it's
> something.
>
> Hope that helps,
> Peace,
> ~Simon

I seem to be having problems getting the code to work..  Seems to crash
my whole project, I don't know if I am missing an import file or what
(I had to go back to an older version on my hd..  I have uploaded what
I have on to sourceforge

https://sourceforge.net/project/showfiles.php?group_id=156455&package_id=201306&release_id=444362
http://www.dexrow.com

thanks for the help



From dingbat at codesmiths.com  Fri Sep  8 11:55:37 2006
From: dingbat at codesmiths.com (Andy Dingley)
Date: 8 Sep 2006 08:55:37 -0700
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
Message-ID: <1157730937.621029.259320@i3g2000cwc.googlegroups.com>


vbfoobar at gmail.com wrote:

> I am looking for python code that takes as input a list of strings
> [...] and outputs the python regular expression

    (s1|s2|s3|s4|s5)
for strings of "s1" etc.

Regex compilers are themselves quite good at optimising beyond this



From wildemar at freakmail.de  Thu Sep 14 05:30:02 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 14 Sep 2006 11:30:02 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <Y94Og.938$TV3.21@newssvr21.news.prodigy.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>	<mailman.48.1158174903.10491.python-list@python.org>	<1158183392.526021.212220@d34g2000cwd.googlegroups.com>
	<Y94Og.938$TV3.21@newssvr21.news.prodigy.com>
Message-ID: <4509211A.5090400@freakmail.de>

> Hi Stu und "Willie",
>
"Willie"?
Thats new. ;)

> I will be running it under (sigh) Windows.
So? Apart from Microsoft being evil and spying on you all the time, I 
find much satisfaction in the fact that Windows Just Works(tm). Linux on 
the other hand Just Barely Works(tm). Hello flamewar :).


> I don't yet know what jython is about, or for, but I'm up for trying
 > jedit for python.
jython is an implementation of python in java (hence the name ;)). That 
means it's a python interpreter inside a java virtual machine (groan). 
It basically lets you write java apps in python syntax. It's currently 
at python 2.1 I believe.
jEdit is extensible though java, and with the jython plugin also through 
python.


> Which plugins give me a good start for scientific stuff?
Er ... I don't know. What do you mean by 'scientific stuff'?
You might want to look at python packages such as scipy (?) or numpy 
(for numerical calculations) or whatever those are called. I think you 
can hook up python to Matlab, Scilab or Mathematica, but don't take my 
word for it. I don't use any of this, so I cannot really tell you more.
None of this is jEdit specific though. Can you clarify?

> I am not interested in Web/html apps.
Too bad, that's the future ;).

> And is there an IDE out there that lets us create GUI dialogs along the 
> lines of what MS provides with Excel and, I assume, VB?
Stani's Python Editor (SPE) and Boa Constructor, I think. I've tried SPE 
a few years back and liked it a lot.
If you only ever write python code you might want to forget about jEdit 
and use one of the two above. jEdit is dubbed 'Programmer's Text 
Editor', and as such provides a 'unified' framework for many languages 
(so you don't have to learn a new editor for every damn language you 
write in once in a blue moon). It is for that reason a /tad/ less 
specialized (though highly configurable). If you still want to use 
jEdit, there is wxGlade for wxPython out there and Glade (not wxGlade!) 
works for pyGTK, I believe.
Hope that helps you deciding.


"Willie" ;)


From jwaixs at gmail.com  Fri Sep  1 18:29:28 2006
From: jwaixs at gmail.com (jwaixs)
Date: 1 Sep 2006 15:29:28 -0700
Subject: disgrating a list
In-Reply-To: <slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
Message-ID: <1157149768.698178.95060@b28g2000cwb.googlegroups.com>

Thank you for all your reply and support. Neil's fits the most to me. I
shrinked it to this function:

def flatten(x):
    for i in range(len(x)):
        if isinstance(x[i], list):
            x[i:i+1] = x[i]

Thank you all again. If someone could find even a cuter way, I'd like
to see that way.

Noud Aldenhoven



From ziga.seilnacht at gmail.com  Mon Sep 25 06:39:16 2006
From: ziga.seilnacht at gmail.com (Ziga Seilnacht)
Date: 25 Sep 2006 03:39:16 -0700
Subject: PyOpenGL pour python 2.5 ???
References: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>
	<4517A3E6.20106@xiludom.gro>
	<1159178528.207890.242410@i42g2000cwa.googlegroups.com>
Message-ID: <1159180756.654944.63830@b28g2000cwb.googlegroups.com>

S?bastien Ramage wrote:
> oh!
> sorry, I made some search on comp.lang.python and fr.comp.lang.python
> and finally I forgot where I was...
>
> My question is :
> how use pyopengl with python 2.5 ??
> it seems that pyopengl was stop on 2005

PyOpenGL is still maintained, but most of the development is focused
on porting PyOpenGL to ctypes, which should eliminate the need for
compilation.

> I'm on windows and I've not tools to recompile pyopengl for python 2.5
> (thinking recompilation is the only things)
>
> Somebody can help me?

The binary installer for Python 2.5 should be available soon. You can
track its progress through Mike Fletcher's blog:

http://blog.vrplumber.com/1633
http://blog.vrplumber.com/1639
http://blog.vrplumber.com/1640

> Seb

Hope this helps,
Ziga



From justin.mailinglists at gmail.com  Thu Sep  7 05:09:17 2006
From: justin.mailinglists at gmail.com (Justin Ezequiel)
Date: 7 Sep 2006 02:09:17 -0700
Subject: 22, invalid agument error
In-Reply-To: <1157610402.254941.134040@p79g2000cwp.googlegroups.com>
References: <1157563063.063705.317970@m73g2000cwd.googlegroups.com>
	<1157593501.762579.135500@m73g2000cwd.googlegroups.com>
	<1157610402.254941.134040@p79g2000cwp.googlegroups.com>
Message-ID: <1157620157.174516.34560@e3g2000cwe.googlegroups.com>

Infinite Corridor wrote:
> Justin Ezequiel wrote:
> >
> > tried sockobj.bind(('127.0.0.1',40007)) and did not get an error
>
> I didn't get an error either, but the whole thing hangs up, and I am
> forced to abort the program. This has happend quite a few times
> already.
> Did it work for you normally?
>

am unable to test as my current PCs do not have bluetooth (yet)
sorry



From frank at chagford.com  Thu Sep  7 03:56:13 2006
From: frank at chagford.com (Frank Millman)
Date: 7 Sep 2006 00:56:13 -0700
Subject: Question about subclassing and overriding methods
In-Reply-To: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>
References: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>
Message-ID: <1157615773.612576.25650@h48g2000cwc.googlegroups.com>


Frank Millman wrote:
> Hi all
>
> Assume a simple class -
>
> class Test(object):
>     def __init__(self,x):
>         self.x = x
>     def getx(self):
>         print self.x
>
> Test(1).getx()
> Test(2).getx()
> Test(3).getx()
>
> As expected, the results are 1,2,3
>
> Assume a slight variation, where given a particular condition I want a
> particular method to behave differently. I know that I could subclass,
> but for various reasons I preferred to do it this way -
>
> class Test(object):
>     def __init__(self,x,y=False):
>         self.x = x
>         if y:
>             self.getx = self.getx2
>     def getx(self):
>         print self.x
>     def getx2(self):
>         print self.x * 2
>
> Test(1).getx()
> Test(2,True).getx()
> Test(3).getx()
>
> As expected, the results are 1,4,3
>
> Now assume a subclass of the above class, where I want the method to
> behave diferently again -
>
> class Test2(Test):
>     def __init__(self,x,y=False):
>         Test.__init__(self,x,y)
>     def getx(self):
>         print self.x*3
>
> Test2(1).getx()
> Test2(2,True).getx()
> Test2(3).getx()
>
> Here I was hoping that the results would be 3,6,9 but they are 3,4,9.
>

Ok, on reflection I more or less understand what is happening, and I
have found an ugly workaround -

class Test2(Test):
   def __init__(self,x,y=False):
        getx = self.getx
        Test.__init__(self,x,y)
        self.getx = getx
    def getx(self):
        print self.x*3

Test2(1).getx()
Test2(2,True).getx()
Test2(3).getx()

Now I get 3,6,9 as intended.

I would still appreciate any comments, especially if someone can
suggest a better approach.

Thanks

Frank



From martin at v.loewis.de  Sat Sep  9 12:19:53 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 09 Sep 2006 18:19:53 +0200
Subject: unicode "table of character" implementation in python
In-Reply-To: <n17af25re60tmm4fsg35h4beopaskpv8iq@4ax.com>
References: <mailman.9642.1156252389.27775.python-list@python.org>
	<44F31B76.1050506@v.loewis.de>
	<n17af25re60tmm4fsg35h4beopaskpv8iq@4ax.com>
Message-ID: <4502E9A9.3000604@v.loewis.de>

Tim Roberts schrieb:
>> 0530..058F; Armenian
>> 0590..05FF; Hebrew
>> ...
> 
> This is a fabulously useful list, Martin.  Did you get this from a web
> page?  Can you tell me where?

It's part of the Unicode Consortium's database (UCD, Unicode Character
Database). This specific table is called "code blocks":

http://www.unicode.org/Public/UNIDATA/Blocks.txt

Python currently has this table not compiled in, but it should be
trivial to compile this into a pure-Python table (either as a
dictionary, or a list of triples).

Regards,
Martin


From antoine at vo.lu  Wed Sep 27 08:27:30 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Wed, 27 Sep 2006 14:27:30 +0200
Subject: ruby %w equivalent
In-Reply-To: <MPG.1f83b24d57caa87e98968a@news.individual.de>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
	<MPG.1f824ba4ccb5f49989687@news.individual.de>
	<4518fba6$1@news.vo.lu>
	<MPG.1f83b24d57caa87e98968a@news.individual.de>
Message-ID: <451a6e24$1@news.vo.lu>

Thorsten Kampe wrote:
> * Antoine De Groote (Tue, 26 Sep 2006 12:06:38 +0200)
>> Thorsten Kampe wrote:
>>> * John Machin (24 Sep 2006 15:32:20 -0700)
>>>> Antoine De Groote wrote:
>>>>> is there a python equivalent for the ruby %w operator?
>>>>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>>>>
>>>> | >>> "a b c".split()
>>>> | ['a', 'b', 'c']
>>>>
>>>> ... appears to match your single example.
>>> Something wrong with "list('abc')"? Or is it too simple?!
>>>
>>> Thorsten
>> As far as I can tell this works for single characters only. You're not 
>> able to split words, as in "one two three".split().
> 
> It does satisfy your example in your first posting nevertheless.
> 
> Thorsten

Absolutely :-)


From grante at visi.com  Fri Sep  1 15:05:43 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 01 Sep 2006 19:05:43 -0000
Subject: $HOSTNAME not in os.environ?
References: <1157136817.528348.107350@h48g2000cwc.googlegroups.com>
Message-ID: <12fh147ljho9kba@corp.supernews.com>

On 2006-09-01, slinkp at gmail.com <slinkp at gmail.com> wrote:
> Can anybody explain this one?

>>>> print os.getenv('HOSTNAME')
> None
>>>>
> pw at kermit ~ $ echo $HOSTNAME
> kermit

Perhaps the HOSTNAME variable isn't exported?


-- 
Grant Edwards                   grante             Yow!  All right, you
                                  at               degenerates! I want this
                               visi.com            place evacuated in 20
                                                   seconds!


From deets at nospam.web.de  Sat Sep  2 19:31:52 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 03 Sep 2006 01:31:52 +0200
Subject: Program to backtrack function calls in source code?
In-Reply-To: <1157230401.389698.234300@b28g2000cwb.googlegroups.com>
References: <1157230401.389698.234300@b28g2000cwb.googlegroups.com>
Message-ID: <4luijlF3ikmsU1@uni-berlin.de>

forum at anton.e4ward.com schrieb:
> Hi,
> 
> many mistakes in programming arise when one changes the code and
> forgets to adjustment somewhere where it is used. Is there a program
> that can extract all place in the source code where a variable is
> accessed or a function called?
> For example in the simplest case I want to change the name of a
> function everywhere in the source...

Others have given you answers that point to concrete, yet partial 
solutions to your problem.

I just want to shed some light to the broader scope. There are limits to 
what can be done in a dynamic language like python.

Lots of code (and very valuable one) in python lives from the fact that 
e.g.

a = getattr(b, some_computed_name)

works. So, ultimately you will always encounter situations where a 
simple name-replace won't catch all possible access/modification spots.

So, a language like e.g. java together with an ide like eclipse
shines in refactoring.

The fun fact is: having the compiler  grok your code means close to 
nothing - without proper testing, things can and will easily break.

The answer to this is: testing, as automated as possible. And funny 
enough, that should (and will in most cases) catch whatever errors 
resulted from that renaming.

So:  use the mentioned tool, use pycheker and/or pylint to gain some 
pre-running confidence in code changes.

But ultimately: test!

Diez


From pavlovevidence at gmail.com  Mon Sep 25 15:24:06 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 25 Sep 2006 12:24:06 -0700
Subject: Talking to marketing people about Python
In-Reply-To: <roy-D4C452.19080324092006@reader2.panix.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <1159212246.293631.48120@i3g2000cwc.googlegroups.com>


Roy Smith wrote:
> I'm working on a product which for a long time has had a Perl binding for
> our remote access API.  A while ago, I wrote a Python binding on my own,
> chatted it up a bit internally, and recently had a (large) customer enquire
> about getting access to it.
>
> I asked for permission to distribute the Python binding, and after a few
> weeks of winding its way through the corporate bureaucracy I got an email
> from a product manager who wants to meet with me to "understand the market
> demand for Python API before we commercialize it".
>
> Can anybody suggest some good material I can give to him which will help
> explain what Python is and why it's a good thing, in a way that a
> marketing/product management person will understand?

You might point out that Perl is really dragging its feet on a next
major release (what's it been, like 5 years?), which is almost
certainly undoing some of its FUD power.  Therefore, it would be a good
idea for your company to invest in some alternatives to Perl sooner
than later.

Carl Banks



From jgodoy at gmail.com  Thu Sep 14 21:42:48 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Thu, 14 Sep 2006 22:42:48 -0300
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
	<mailman.109.1158271534.10491.python-list@python.org>
	<Xns983EBE117F9FEOKB@199.45.49.11>
Message-ID: <87ac5152hz.fsf@gmail.com>

"OKB (not okblacke)" <brenNOSPAMbarn at NObrenSPAMbarn.net> writes:

>     	What I'm interested in knowing is whether anyone has found any 
> editor other than TextPad and UltraEdit which allows soft word-wrap (no 
> line breaks stored in the file) which do NOT wrap the text to the left 
> edge of the screen but instead wrap it back only as far as the 
> indentation level of the beginning of the line.  So that if I start out 
> on a line indented halfway across the screen, and the line wraps, I get 
> a block of text, all of which is indented halfway across the screen -- 
> but then it's saved in the file as one long line.  In other words, an 
> editor that separates how the text is DISPLAYED from how it's SAVED.

WYSINWYG -> What You See Is Not What You Get...

It doesn't make much sense to me, though.  With Emacs I get the wrapping the
way you want, but it really breaks the lines. 

-- 
Jorge Godoy      <jgodoy at gmail.com>


From felipe.lessa at gmail.com  Thu Sep  7 08:27:21 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Thu, 7 Sep 2006 09:27:21 -0300
Subject: python vs java
In-Reply-To: <44ffce0a$0$24536$626a54ce@news.free.fr>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
	<44fedfd2$0$32654$626a54ce@news.free.fr>
	<1157578594.300005.47550@e3g2000cwe.googlegroups.com>
	<44ffce0a$0$24536$626a54ce@news.free.fr>
Message-ID: <c2701f5c0609070527p231a4dc4p7e18075f366e963b@mail.gmail.com>

2006/9/7, Bruno Desthuilliers <onurb at xiludom.gro>:
> I don't think one could pretend writing a cross-platform application
> without testing it on all targeted platforms.

E.g: while creating a free software, you may not have an Apple
computer but you may want to be *possible* to run your program there.
You don't test it, but you *think* it runs there. Not everybody has a
spare MacOS X to test apps.

Of course, if your software *needs* to run in some particular OS then
you have to test on it.

-- 
Felipe.


From torerik81 at gmail.com  Thu Sep 14 09:05:28 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Thu, 14 Sep 2006 15:05:28 +0200
Subject: Why not event-driven packages in other than the main thread?
In-Reply-To: <mailman.87.1158237523.10491.python-list@python.org>
References: <mailman.87.1158237523.10491.python-list@python.org>
Message-ID: <eebk2p$opu$1@news.uit.no>

Jean-Paul Calderone wrote:
> On Thu, 14 Sep 2006 11:13:59 +0200, Tor Erik <torerik81 at gmail.com> wrote:
>> Hi,
>>
>> I've developed an application were I've used Tkinter for the GUI.
>> When I ran the GUI in another thread than the main, it kept locking
>> up.
>> I experienced similar problems with Twisted.
>>
>> Both of these tools are event-based, so I guess that is the root of the
>> problem...
>>
>> But could anyone tell me why running these in a thread other than the
>> main one doesn't work?
> 
> I don't know about Tkinter, but Twisted can be run in a thread other than
> the main thread.  Several projects make use of this feature extensively, so
> while I wouldn't recommend it, it should certainly work.
> 
> Perhaps you did something wrong in setting it up, or perhaps you have found
> a bug.  Can you post a minimal example to reproduce this to Twisted's bug
> tracker?
> 
> Jean-Paul

Oh... I've re-coded that part of my app. now, so it doesn't contain any 
references to Twisted anymore. However, I was aiming to build a scalable 
HTTP server, and tried using Twisted for the task. Whenever I started 
the thing from the main thread (as a separate thread), nothing happened. 
That is, I received no exceptions, but the HTTP server was not 
running... When executing the HTTP server as a separate app., things 
worked perfectly.


From amk at amk.ca  Thu Sep  7 08:08:30 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Thu, 07 Sep 2006 07:08:30 -0500
Subject: Where are the source files for the Python FAQs?
References: <ckHLg.25268$gY6.19867@newssvr11.news.prodigy.com>
	<_rNLg.97560$zy5.1565871@twister1.libero.it>
Message-ID: <ANednbiKgtMjlp3YnZ2dnUVZ_sGdnZ2d@speakeasy.net>

On Thu, 07 Sep 2006 04:43:38 GMT, 
	Eriol <eriol at huine.org> wrote:
> Dave Kuhlman wrote:
> 
>> Can someone tell me the location of the reST source files for the
>> Python FAQs. ?I have not been able to find them.
> 
> https://svn.python.org/www/trunk/pydotorg/doc/faq/ 

Caution: I intend to switch to generating the FAQs from Fredrik
Lundh's wiki at pyfaq.infogami.com ; it's just a matter of when I find
the time to deploy the necessary scripts on python.org.  At that point
the master source for the FAQs would be available in XML format, not
reST.

--amk


From brian at sweetapp.com  Tue Sep 26 13:37:57 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Tue, 26 Sep 2006 19:37:57 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehilui.evq.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<Xns984996E6BABCEduncanbooth@127.0.0.1>	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>	<mailman.672.1159275735.10491.python-list@python.org>	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>	<mailman.680.1159277904.10491.python-list@python.org>	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>	<mailman.687.1159280315.10491.python-list@python.org>	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>	<mailman.690.1159282116.10491.python-list@python.org>	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>	<mailman.698.1159283878.10491.python-list@python.org>	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>	<mailman.704.1159285432.10491.python-list@python.org>	<slrnehij7q.evq.jon+usenet@snowy.squish.net>	<mailman.708.1159287078.10491.python-list@python.org>
	<slrnehilui.evq.jon+usenet@snowy.squish.net>
Message-ID: <45196575.7000105@sweetapp.com>

Jon Ribbens wrote:
> In article <mailman.708.1159287078.10491.python-list at python.org>, Brian Quinlan wrote:
>> Well, there are dozens (hundreds?) of templating systems for Python. 
> 
> I know, I wrote one of them ;-)
> 
>> t = Template("test.html")
>> t['foo'] = 'Brian -> "Hi!"'
>> assert str(t) == '<p>Brian -&gt; "Hi"</p>'
>>
>> So how would you test our template system?
> 
> What I don't get is why you are testing the above code like that at
> all. Surely if the template system somehow became so broken that it
> couldn't even do trivial replacements, you would notice immediately
> as all your web pages would go totally wrong.

If, in the example that I showed, the less-than character was not 
correctly escaped, then it might not manifest itself frequently in a 
typical application because the less-than character is seldom used in 
English prose.

Also, assuming that single case was trivial to test without a test 
harness, how many web pages do I have to look at to be reasonably 
confident that *every* feature works correctly?

Cheers,
Brian


From bj_666 at gmx.net  Sat Sep  2 07:45:54 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sat, 02 Sep 2006 13:45:54 +0200
Subject: inheritance needed in program configuration - config module or
	python oo?
References: <1157195428.593487.268960@74g2000cwt.googlegroups.com>
Message-ID: <pan.2006.09.02.11.45.54.660493@gmx.net>

In <1157195428.593487.268960 at 74g2000cwt.googlegroups.com>, metaperl wrote:

> And I need to form an FTP connection URL based on this. But I really
> dont want to write my code such that I explicitly hardcode where the
> ftpserver is coming from. Again, in pure OO it is very simple to call a
> method and have it dispatch to either the current object or it's
> parent, but I am not sure that ConfigObj or any config module allows
> such power.

What about simply merging the two `ConfigObj` instances with the `merge()`
method?

Ciao,
	Marc 'BlackJack' Rintsch


From cvanarsdall at mvista.com  Wed Sep 20 20:18:37 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Wed, 20 Sep 2006 17:18:37 -0700
Subject: Upgrading question
In-Reply-To: <1158797598.110269.57110@k70g2000cwa.googlegroups.com>
References: <1158797598.110269.57110@k70g2000cwa.googlegroups.com>
Message-ID: <4511DA5D.6000602@mvista.com>

s99999999s2003 at yahoo.com wrote:
> hi
> just want to get some opinions
> i am working in unix and my Python version is 2.4.1
> I would like to upgrade my version to 2.5 stable. but i have many
> scripts already running using 2.4.1. Can i just install 2.5 onto
> another directory, and then just change every shebang (#! in first
> line) in my script to the new directory? That way, my script will also
> run correectly right?
> thanks
>
>   
Read:  http://docs.python.org/dev/whatsnew/section-other.html about code 
problems

other than that change the link in /usr/bin/python to point to 2.5 
instead of 2.4

-c



-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From blue99 at interia.pl  Wed Sep 20 05:53:01 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 20 Sep 2006 02:53:01 -0700
Subject: jpype package, could be path problem
In-Reply-To: <1158743920.654022.297190@k70g2000cwa.googlegroups.com>
References: <1158743920.654022.297190@k70g2000cwa.googlegroups.com>
Message-ID: <1158745981.761814.251580@h48g2000cwc.googlegroups.com>


kelemen.viktor wrote:

> everything worked correctly but when i wrote a short script:
> "
> from jpype import *
>
> jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
> java.lang.System.out.println("hello world")
> shutdownJVM()
> "
> and tried to run it this's got:
>
> "
> Traceback (most recent call last):
>   File "/home/kelemen/workspace/JPype/src/helloAgent.py", line 3, in ?
>
> jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
> NameError: name 'jpype' is not defined
> "
>
> What would be the reason?

Consider this:

# bad style (potential name clash)
from jpype import *
startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')

# that's better
import jpype
jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')

# for long names of modules
import jpype as jp
jp.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')

And see this:
http://docs.python.org/tut/node8.html

HTH,
Rob



From reply at group.invalid  Mon Sep 25 13:24:48 2006
From: reply at group.invalid (Pom)
Date: Mon, 25 Sep 2006 17:24:48 GMT
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <mailman.583.1159202370.10491.python-list@python.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<mailman.583.1159202370.10491.python-list@python.org>
Message-ID: <AhURg.95725$cV7.1369219@phobos.telenet-ops.be>

Tim Chase wrote:
>> def remapmysql(a):
>>      return (a[0], (a[1:]))
>>
>> def test_map():
>>      count = 100000 # count of simulated records
>>      l1 = range(0, count)
>>      l2 = range(count , 2 * count )
>>      l3 = range(2 * count, 3 * count )
>>      z1 = zip(l1, l2, l3) # simulate a mysql resultset
>>
>>      d1 = dict(map(remapmysql,z1))
>>
>>      return d1
> 
> I'm not sure the map() is needed, as it could just be
> 
>  >>> d1 = dict((row[0], row[1:]) for row in z1)
> 
> which worked in my tests.
> 
> However either seems to work fairly well.
> 
> -tkc
> 

thank you!!

changed it, see previous post.


From theemails at gmail.com  Fri Sep 29 14:08:53 2006
From: theemails at gmail.com (theemails at gmail.com)
Date: 29 Sep 2006 11:08:53 -0700
Subject: Passing Arguments
Message-ID: <1159553333.790780.284510@b28g2000cwb.googlegroups.com>

New to Python ... this should be an easy question to answer.

INPUT

import sys

print 'The command line arguments are:'
for i in sys.argv:
    print i

print '\nThe PYTHONPATH is', sys.path

OUTPUT
The command line arguments are:
C:\Python25\using_sys.py

The PYTHONPATH is ['C:\\Python25\\Lib\\idlelib',
'C:\\Python25\\python25.zip', 'C:\\Python25\\DLLs',
'C:\\Python25\\lib', 'C:\\Python25\\lib\\plat-win',
'C:\\Python25\\lib\\lib-tk', 'C:\\Python25',
'C:\\Python25\\lib\\site-packages']

It works fine when I 'Run Module'...but when I type in interactive mode
in the Python Shell
>>> python using_sys.py test1 test2 test3

I get the following error:
SyntaxError: invalid syntax

How can I fix this?



From johnjsal at NOSPAMgmail.com  Thu Sep 28 14:11:09 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 18:11:09 GMT
Subject: sqlite3 error
In-Reply-To: <AdUSg.7372$UG4.1867@newsread2.news.pas.earthlink.net>
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<mailman.828.1159382395.10491.python-list@python.org>
	<SBzSg.40$1n3.256@news.tufts.edu>
	<ojISg.2367$Y24.1479@newsread4.news.pas.earthlink.net>
	<wEQSg.42$1n3.351@news.tufts.edu>
	<AdUSg.7372$UG4.1867@newsread2.news.pas.earthlink.net>
Message-ID: <1fUSg.48$1n3.425@news.tufts.edu>

Dennis Lee Bieber wrote:
> On Thu, 28 Sep 2006 14:05:16 GMT, John Salerno
> <johnjsal at NOSPAMgmail.com> declaimed the following in comp.lang.python:
> 
>> I don't see this. The code works now, though. Maybe it was something 
>> carried over by pasting.
> 
> 	Here's a snippet from your original listing:
> 
>>      nameFirst varchar(50) NOT NULL,
>>      nameLast varchar(50) NOT NULL,
>>      nameGiven varchar(255) DEFAULT NULL,
>> );
>> ''')

That's correct, though, isn't it? Those quotes are the closing quotes of 
the argument to executescript()


From steve at holdenweb.com  Tue Sep 12 20:42:24 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 01:42:24 +0100
Subject: Gadfly server startup error
In-Reply-To: <g3cjt3-ub6.ln1@prcm.tecont.de>
References: <g3cjt3-ub6.ln1@prcm.tecont.de>
Message-ID: <ee7k46$6hl$1@sea.gmane.org>

Ralf Muschall wrote:
> Hello,
> 
> I just tried the recent gadfly (from SF), using Python
> 2.4.2 (hand built, since my Suse 8.2 had only 2.2.2).
> 
> The direct operation of gadfly works.
> 
> After calling gfserver, I get (in addition to a complete
> users manual dumped on the screen) the following error
> message:
> 
> |Traceback (most recent call last):
> |  File "/usr/local/bin/gfserver", line 4, in ?
> |    main()
> |  File "/usr/local/python-2.4.2/lib/python2.4/site-packages/gadfly/scripts/gfserver.py", line 89, in main
> |    S = Server(int(port), db, dr, pw, startup)
> |NameError: global name 'Server' is not defined
> 
> 
> which is factually correct (the script only imports sys,
> but then tries to instantiate the class "Server" which is
> nowhere defined).
> 
> Is this a bug somewhere, or is just my installation broken?
> 
You're already doing better than I am. On Cygwin 2.5rc2 and Windows 
2.4.2 I can't even get it to runs its tests properly:


C:\Steve\gadflyZip>python run_tests
Traceback (most recent call last):
   File "run_tests", line 9, in ?
     go()
   File "C:\Steve\gadflyZip\test\__init__.py", line 35, in go
     l.append(test_mods[name].suite())
AttributeError: 'module' object has no attribute 'suite'

Running gvserver I get pretty mucht he same thing you do:

Traceback (most recent call last):
   File "gadflyZip\gadfly\scripts\gfserver.py", line 101, in ?
     main()
   File "gadflyZip\gadfly\scripts\gfserver.py", line 89, in main
     S = Server(int(port), db, dr, pw, startup)
NameError: global name 'Server' is not defined

Time to report a bug, methinks? Makes SQLite look good  ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From Brendon at BrendonTowle.com  Thu Sep 28 06:34:23 2006
From: Brendon at BrendonTowle.com (Brendon Towle)
Date: Thu, 28 Sep 2006 06:34:23 -0400
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.1980.1159437004.10490.python-list@python.org>
References: <mailman.1980.1159437004.10490.python-list@python.org>
Message-ID: <B53AC85D-1734-41A5-9583-9917E0BADE40@BrendonTowle.com>

Some of your Lisp translations are subtly off...


> Date: 28 Sep 2006 02:49:50 -0700
> From: "sturlamolden" <sturlamolden at yahoo.no>
> Subject: Re: Questions on Using Python to Teach Data Structures and
> 	Algorithms
> To: python-list at python.org
>
> If you want to make a chained structure, then perhaps you know LISP?
> This is what the basic machinery of LISP looks like in Python:
>
> def cons(a,b)
>    return [a,b]

should be:
     return [a].extend(b)

> def car(structure)
>    return structure[0]
>
> def cdr(structure)
>    return structure[1]

should be:
     return structure[1:]

B.

--
Brendon Towle, Ph.D.   <Brendon at BrendonTowle.com>  +1-412-362-1530
?Debugging is twice as hard as writing the code in the first place.  
Therefore,
if you write the code as cleverly as possible, you are, by  
definition, not
smart enough to debug it.? ? Brian W. Kernighan




From fc14301589 at icqmail.com  Sat Sep 30 05:02:25 2006
From: fc14301589 at icqmail.com (TheSaint)
Date: Sat, 30 Sep 2006 17:02:25 +0800
Subject: Filter class
Message-ID: <451e32e7_2@news.tm.net.my>

Hello NG,

Curious to know whether exists a filter class.
I'm doing some rough mail filtering on my own criteria, but I'm very new on
programming and I like to find some clue on passing a config file of rules
which will be regex by Python.

TIA


From simon at brunningonline.net  Wed Sep 27 11:36:27 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Wed, 27 Sep 2006 16:36:27 +0100
Subject: Extra Newby question - Trying to create md5 File Listing
In-Reply-To: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@lifeway.com>
References: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@lifeway.com>
Message-ID: <8c7f10c60609270836v1a5c33a6r7784bdbfc305838e@mail.gmail.com>

On 9/27/06, James Johnston <jxjohns at lifeway.com> wrote:
>
> I've never written a Python program before and I'm trying to read a config
> file with file path/names (eg. c:\\python24\\*.dll, ... *.exe) to create an
> output file of filename + md5 values.  I'm confused.  I'm trying to learn
> how to use Wing IDE and step through the Stack Data.  It seems to be
> working but on the
>
> [INDENT]for fn in filelist:
>   data = file(fn,'rb').read() [/INDENT]
>
> I get a
>
> [INDENT]IOError: (2, 'No such file or directory', 'c')

Why not put a "print fn" line in just before the open, so you can see
what it's choking on?

-- 
Cheers,
Simon B,
simon at brunningonline.net


From fredrik at pythonware.com  Tue Sep 26 04:04:12 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 10:04:12 +0200
Subject: SimpleXMLRPCServer and socket
In-Reply-To: <9d52368b0609260057q185a8915pe022ea20288bba96@mail.gmail.com>
References: <9d52368b0609251120h3ff1fc26y4a4325e0f05b4d25@mail.gmail.com>	<ef98dn$3of$1@sea.gmane.org>	<9d52368b0609251158n46b3f0d6hb67dd7b44febf55@mail.gmail.com>	<368a5cd50609251206i3ebfed92tbfa13c7c14a45bd6@mail.gmail.com>
	<9d52368b0609260057q185a8915pe022ea20288bba96@mail.gmail.com>
Message-ID: <efamts$77v$1@sea.gmane.org>

Juju wrote:

> But I still have a little question :
> 
> How can I do to know which method I should override to make the things work ?
> 
> Usually, I look at "python.org" but in this case, I couldn't find what
> I was looking for.  Finally, I had to look at the source files to under-
 > stand what I should do.

the SocketServer framework is a bit underdocumented, indeed.

it would be a nice subject for an extended howto document, I think (cf. 
http://www.amk.ca/python/howto/ ).  any volunteers ?

on the other hand, the code is stable, and it's not going anywhere, so 
reading the source is perfectly okay.

</F>



From dbraden at invalid.add  Tue Sep 12 16:53:43 2006
From: dbraden at invalid.add (David J. Braden)
Date: Tue, 12 Sep 2006 20:53:43 GMT
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <mailman.385.1158088100.5279.python-list@python.org>
References: <mailman.385.1158088100.5279.python-list@python.org>
Message-ID: <r7FNg.347$Ij.183@newssvr14.news.prodigy.com>

Brendon Towle wrote:
> I need to simulate scenarios like the following: "You have a deck of 3 
> orange cards, 5 yellow cards, and 2 blue cards. You draw a card, replace 
> it, and repeat N times."
> 
> So, I wrote the following code, which works, but it seems quite slow to 
> me. Can anyone point out some obvious thing that I'm doing 
> inefficiently? Or, is this more or less as good as it gets?
> 
> For reference, my typical numbers look like this:
> 
>   2 <= len(population) <= 7
>   4 <= len(mapping) <= 50
>   10 <= count <= 1000000
> 
> B.
> 
> <code>
> #!/usr/bin/env python
> 
> import random
> 
> def randomDrawing(count, population):
>     """Simulates drawing <count> items from <population>, with replacement.
>     population is a list of lists: [[count1, type1], [count2, type2], ...]
> 
>     Typical examples:
>     >>>randomDrawing(100, [[3, 'orange'], [5, 'yellow'], [2, 'blue']])
>     [[28, 'orange'], [57, 'yellow'], [15, 'blue']]
> 
>     >>>randomDrawing(100000, [[3, 'orange'], [5, 'yellow'], [2, 'blue']])
>     [[29923, 'orange'], [50208, 'yellow'], [19869, 'blue']]
> 
>     """
>     res = [[0, item[1]] for item in population]
>     mapping = []
>     for i in xrange(len(population)):
>         mapping.extend([i]*population[i][0])
>     for i in xrange(count):
>         index = random.choice(mapping)
>         res[index][0] += 1
>     return res
> 
> </code>
> 
> --Brendon Towle, PhD
> Cognitive Scientist
> +1-412-690-2442x127
> Carnegie Learning, Inc.
> The Cognitive Tutor Company ?
> Helping over 375,000 students in 1000 school districts succeed in math.
> 
> 

Given the data structure, might it not be faster to generate binomial 
variates for n-1 types, and set nth count = #draws - sum(other 
outcomes)? And for a "large" count, could you get by with a normal 
approximation?  If you *do* feel the need for exact binomial, there are 
  short, somewhat sluggish routines in Devroye (1986 - on the web!, pg 
525), and Random_binomial1, compiled by Alan Miller(AMrandom.zip0, 
available, xlated, at  http://www.esbconsult.com/. Even though they are 
relatively slow, generating a few of these would seem to be a lot faster 
than your current approach.

Sorry I can't help more - I'm just starting to learn Python, have yet to 
even get IDLE going.

Regards,
Dave Braden


From akameswaran at gmail.com  Wed Sep 13 18:33:40 2006
From: akameswaran at gmail.com (akameswaran at gmail.com)
Date: 13 Sep 2006 15:33:40 -0700
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <1158184579.429863.32670@i42g2000cwa.googlegroups.com>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
	<1158184579.429863.32670@i42g2000cwa.googlegroups.com>
Message-ID: <1158186820.261177.247090@i42g2000cwa.googlegroups.com>


sjdevnull at yahoo.com wrote:
> akameswaran at gmail.com wrote:
> > I wrote up a quick little set of tests, I was acutally comparing ways
> > of doing "case" behavior just to get some performance information.  Now
> > two of my test cases had almost identical results which was not at all
> > what I expected.  Ultimately I realized I don't really know how
> > literals are treated within the interpreter.
> >
> > The two implementations I was looking at were:
> >
> > class caseFunction(object):
> >     def __init__(self):
> >         self.caseDict = {'a':"retval = 'a'",
> > 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> >
> > "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
> >                          "i":"retval='i'"}
> >
> >     def doIt(self,a):
> >         exec(self.caseDict.get(a))
> >         return retval
>
> Have you considered eliminating the exec() wart just doing:

thr dict wart was added - needlessly simply to see if there was a
difference.  case4 was a reaction to the odd timings.  I wouldn't use
it ever in the real world as it is totally unnecessary.

>
>     self.caseDict = {'a'='a', 'b'='b'}
> ....
>     def doIt(self, a):
>         return self.caseDict[a]
>
> (or the get call)
> Or for more complex cases going with something like:
>
> class caseFunction(object):
>     def __init__(self):
>         self.caseDict = {'a':self.do_a, 'b':self.do_b}
>     def do_a(self):
>         return 'a'
>     def do_b(self):
>         return 'b'
>     def doIt(self, a):
>         return self.caseDict[a]()
>
> or eliminating the init and
>     def doIt(self, a):
>         return getattr(self, "do_"+a)()
>

This is clever, but really only works for this contrived example.  If I
wanted to base my cases on an object.... Still I like it's elimination
of seemingly redundant dictionary.  The original purpose of all of this
was to get a feel for performance differences between endless if/else
statements and a dictionary for performing switch/case type stuff.

The upshot of all of this, is I will probably stick to the if/else
construct except for fairly complex cases for two reasons

1) only in the most braindead version of an if/else construction  is
dictionary faster for small (ie less than 20) different cases.
2) dictionary method won't work if I want an switch could match
multiple case conditions




> ?  Obviously with these two you might want a bit more complexity for a
> default if the attribute/dict entry is missing, but the simple case
> shows the idea.



From ldo at geek-central.gen.new_zealand  Tue Sep 26 05:44:10 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 21:44:10 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr8n.ln4.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efasng$16m$2@lust.ihug.co.nz>

In message <slrnehhr8n.ln4.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Lawrence D'Oliveiro enlightened us with:
>> The trouble with this is that, instead of offering extra functionality,
>> it leaves the door open to making two stupid mistakes:
>>
>>     2) quoting of wildcards BEFORE quoting of non-wildcards
> 
> Why is this a "stupid" mistake in your view? Please explain this in
> detail, because I think it's a proper way of doing it.

Because quoting the wildcards introduces backslash specials before each
wildcard. Quoting non-wildcards then causes those backslashes to be
doubled, which means they escape themselves instead of the wildcards.


From Kakarot203 at aol.com  Sun Sep  3 17:55:55 2006
From: Kakarot203 at aol.com (Kakarot203 at aol.com)
Date: 3 Sep 2006 14:55:55 -0700
Subject: HOW TO TURN $6 INTO $6,000!!!!!! READING THIS COULD
Message-ID: <1157320555.868546.146880@e3g2000cwe.googlegroups.com>

HOW TO TURN $6 INTO $6,000!!!!!! READING THIS COULD
CHANGE YOUR LIFE!
I found this on a bulletin board and decided to try it. A
little while back, I was browsing through newsgroups,
just like you are now, and came across an article similar
to this that said you could make thousands of dollars
within weeks with only an initial investment of $6.00! So
I thought, Yeah right, this must be a scam, but like most
of us, I was curious, so I kept reading. Anyway, it
said that you send $1.00 to each of the 6 names and
address stated in the article. You then place your own
name and address in the bottom of the list at #6, and
copy and paste this to post this article in at least 200
newsgroups. (There are thousands) no catch that was it.

So after thinking it over, and talking to a few people
first, I thought about trying it. I figured what have I
got to lose except 6 stamps and $6.00, right? Then I
invested the measly $6.00. Well GUESS WHAT!!... within
7 days, I started getting money in the mail! I was
shocked! I figured it would end soon, but the money just
kept coming in.

In my first week, I made about $25.00.

By the end of the second week I had made a total of over
$1,000.00!

In the third week I had over $10,000.00 and it's still
growing.

This is now my fourth week and I have made a total of
just over $42,000.00 and it's still coming in rapidly.

It's certainly worth $6.00, and 6 stamps, I have spent
more than that on the lottery!!

Let me tell you how this works and most importantly, why
it works....Also, make sure you print a copy of this
article NOW, so you can get the information off of it as
you need it. I promise you that if you follow the
directions exactly, that you will start making more money
than you thought possible by doing something so easy!

Suggestion: Read this entire message carefully! (Print it
out or download it.) Follow the simple directions and
watch the money come in! It's easy. It's legal. And, your
investment is only $6.00 (Plus postage)

IMPORTANT: This is not a rip-off; it is not indecent; it
is not illegal; and it is virtually no risk - it really
works!!!! If all of the following instructions are
adhered to, you will receive extraordinary dividends.

PLEASE NOTE: Please follow these directions EXACTLY, and
$50,000 or more can be yours in 20 to 60 days. This
program remains successful because of the honesty and
integrity of the participants.

Please continue its success by carefully adhering to the
instructions. You will now become part of the Mail Order
business. In this business your product is not solid and
tangible, it's a service. You are in the business of
developing Mailing Lists. Many large corporations are
happy to pay big bucks for quality lists. However, the
money made from the mailing lists is secondary to the
income which is made from people like you and me asking
to be included in that list. Here are the 4 easy steps to
success:

STEP 1: Get 6 separate pieces of paper and write the
following on each piece of paper; PLEASE PUT ME ON YOUR
MAILING LIST.

Now get 6 US $1.00 bills and place ONE inside EACH of the
6 pieces of paper so the bill will not be seen through
the envelope (to prevent thievery). Next, place one paper
in each of the 6 envelopes and seal them. You should now
have 6 sealed envelopes, each with a piece of paper
stating the above phrase, with your name and address,
and a $1.00 bill. What you are doing is creating a
service.

THIS IS ABSOLUTELY LEGAL! You are requesting a legitimate
service and you are paying for it! Like most of us I was
a little skeptical and a little worried about the legal
aspects of it all. So I checked it out with the U.S.
Post Office (1-800-725-2161) and they confirmed that it
is indeed legal! Mail the 6 envelopes to the following
addresses:

Mailing Addresses
KEVIN LEE
8377 APT. I MONTGOMERY RUN RD.
ELLICOTT CITY MD 21043

Stephanie Hicks
1283 Evening Canyon
Henderson NV 89014

Tia Loske
40 Hancock St.
Ft. Plain, NY 13339

Andre Lowe
15829 Evanston st.
detroit, MI 48224

Donna M. Laino-Heiserer
66 FairHarbor Drive
Patchogue, N.Y. 11772

Erik Sibley
1611 East 14th Court
Lynn Haven, FL 32444

STEP 2: Now take the #1 name off the list that you see
above, move the other names up (6 becomes 5, 5 becomes 4,
etc...) and add YOUR Name as number 6 on the list.

STEP 3: Change anything you need to, but try to keep this
article as close to original as possible. Now, post your
amended article to at least 200 newsgroups. (I think
there are close to 24,000 groups) All you need is 200,
but remember, the more you post, the more money you make!
This is perfectly legal! If you have any doubts, refer to
Title 18 Sec. 1302 & 1341 of the Postal lottery laws.
Keep a copy of these steps for yourself and, whenever you
need money, you can use it again, and again.
PLEASE REMEMBER that this program remains successful
because of the honesty and integrity of the participants
and by their carefully adhering to the directions. Look
at it this way, if you are of integrity, the program
will continue and the money that so many others have
received will come your way.
NOTE: You may want to retain every name and address sent
to you, either on a computer or hard copy and keep the
notes people send you. This VERIFIES that you are truly
providing a service. (Also, it might be a good idea to
wrap the $1 bill in dark paper to reduce the risk of mail
theft.)

So, as each post is downloaded and the directions
carefully followed, six members will be reimbursed for
their participation as a List Developer with one dollar
each. Your name will move up the list geometrically so
that when your name reaches the #1 position you will be
receiving thousands of dollars in CASH!!! What an
opportunity for only $6.00 ($1.00 for each of the first
six people listed above) Send it now, add your own name
to the list and you're in business!

---DIRECTIONS ----- FOR HOW TO POST TO NEWSGROUPS go to
Google.com and type in NEWSGROUPS AND PICK THE GROUPS YOU
WANT TO POST YOUR MESSAGES ON.
Then post this message on all groups that are shown
click on where it says post message. THIS IS A FREE
SERVICE. ------------

Step 1) You do not need to re-type this entire letter to
do your own posting. Simply put your cursor at the
beginning of this letter and drag your cursor to the
bottom of this document, and select 'copy' from the edit
menu. This will copy the entire letter into the
computer's memory.
Step 2) Open a blank 'notepad' file and place your cursor
at the top of the blank page. From the 'edit' menu
select 'paste'. This will paste a copy of the letter into
notepad so that you can add your name to the list.

Step 3) Save your new notepad file as a .txt file. If you
want to do your postings in different settings, you'll
always have this file to go back to.

Step 4) Use Netscape or Internet explorer and try
searching for various newsgroups (on-line forums, message
boards, chat sites, discussions.)

Step 5) Visit these message boards and post this article
as a new message by highlighting the text of this letter
and selecting paste from the edit menu. Fill in the
Subject, this will be the header that everyone sees as
they scroll through the list of postings in a particular
group, click the post message button. You're done with
your first one! Congratulations...THAT'S IT! All you have
to do is jump to different newsgroups and post away,
after you get the hang of it, it will take about 30
seconds for each newsgroup!

**REMEMBER, THE MORE NEWSGROUPS YOU POST IN, THE MORE
MONEY YOU WILL MAKE!! BUT YOU HAVE TO POST A MINIMUM OF
200**
That's it! You will begin receiving money from around the
world within days! You may eventually want to rent a
P.O.Box due to the large amount of mail you will receive.
If you wish to stay anonymous, you can invent a name to
use, as long as the postman will deliver it.

**JUST MAKE SURE ALL THE ADDRESSES ARE CORRECT.**
Now the WHY part: Out of 200 postings, say I receive only
5 replies (a very low example). So then I made $5.00 with
my name at #6 on the letter. Now, each of the 5 persons
who just sent me $1.00 make the MINIMUM 200 postings,
each with my name at #5 and only 5 persons respond to
each of the original 5, that is another $25.00 for me,
now those 25 each make 200 MINIMUM posts with my name at
#4 and only 5 replies each, I will bring in an additional
$125.00! Now, those 125 persons turn around and post the
MINIMUM 200 with my name at #3 and only receive 5 replies
each, I will make an additional $626.00! OK, now here is
the fun part, each of those 625 persons post a MINIMUM
200 letters with my name at #2 and they each only receive
5 replies, that just made me $3,125.00!!! Those 3,125
persons will all deliver this message to 200 newsgroups
with my name at #1 and if still 5 persons per 200
newsgroups react I will receive $15,625,00! With an
original investment of only $6.00! AMAZING! When your
name is no longer on the list, you just take the latest
posting in the newsgroups, and send out another $6.00 to
names on the list, putting your name at number 6 again.
And start posting again. The thing to remember is: do you
realize that thousands of people all over the world are
joining the internet and reading these articles
everyday, JUST LIKE YOU are now!! So, can you afford
$6.00 and see if it really works?? I think so... People
have said, "what if the plan is played out and no one
sends you the money? So what! What are the chances of
that happening when there are tons of new honest users
and new honest people who are joining the internet and
newsgroups everyday and are willing to give it a try?
Estimates are at 20,000 to 50,000 new users, every day,
with thousands of those joining the actual internet.

Remember: play FAIRLY and HONESTLY and this will really
work.



From george.sakkis at gmail.com  Thu Sep 14 22:19:44 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 14 Sep 2006 19:19:44 -0700
Subject: Algorithm Question
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
	<ee44nl$8r$1$830fa79d@news.demon.co.uk>
	<1158015700.817709.253180@h48g2000cwc.googlegroups.com>
	<eeconn$s2n$1$8300dec7@news.demon.co.uk>
Message-ID: <1158286784.494861.8480@h48g2000cwc.googlegroups.com>

Andrew McLean wrote:

> Now I want to issue a series of queries, such that when I combine all
> the data returned I have accessed all the records in the database.
> However, I want to minimise the total number of queries and also want to
> keep the number of records returned by more than one query small.

The first requirement makes sense, but what's the reason for the second
one ? In any case, as you realized the problem is not well defined. For
example, what's better:
a) 2 queries each covering 2/3 of the total records (say R) whose
overlap is 1/3*R, or
b) 4 queries each covering 1/4*R with zero overlap ?

George



From aaaWindev at gmail.com  Fri Sep 29 06:34:24 2006
From: aaaWindev at gmail.com (aaaWindev at gmail.com)
Date: 29 Sep 2006 03:34:24 -0700
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159399077.248154.160800@d34g2000cwd.googlegroups.com>
	<451b8a2e$0$8876$636a55ce@news.free.fr>
Message-ID: <1159526064.928152.121550@c28g2000cwb.googlegroups.com>

Hi Bruno,

Let me guess, your favorite book is the "I HATE THE FRENCH OFFICIAL
HANDBOOK". People here deserve a more objective opinion.

Here you can find what WinDev users have to say about WinDev

http://www.windev.com/pcsoft/testimonials/

There are more testimonials here (in french).

http://www.pcsoft.fr/pcsoft/120pages/html/porsche.htm

By the way, Python is a great programming language. What is cool about
WinDev is that the language is closely embedded with the GUI. For
example, to select a line in a browsing table, you may just write:
MyTable = 15 as if MyTable was a variable (it is a powerfull widget
indeed, with searching, sorting, export to Excel, and so on).

--
PatBiker



From jujucece at gmail.com  Tue Sep 26 03:57:05 2006
From: jujucece at gmail.com (Juju)
Date: Tue, 26 Sep 2006 09:57:05 +0200
Subject: SimpleXMLRPCServer and socket
In-Reply-To: <368a5cd50609251206i3ebfed92tbfa13c7c14a45bd6@mail.gmail.com>
References: <9d52368b0609251120h3ff1fc26y4a4325e0f05b4d25@mail.gmail.com>
	<ef98dn$3of$1@sea.gmane.org>
	<9d52368b0609251158n46b3f0d6hb67dd7b44febf55@mail.gmail.com>
	<368a5cd50609251206i3ebfed92tbfa13c7c14a45bd6@mail.gmail.com>
Message-ID: <9d52368b0609260057q185a8915pe022ea20288bba96@mail.gmail.com>

Hi,

2006/9/25, Fredrik Lundh <fredrik at pythonware.com>:
> I don't have time to dig deeper into this right now, but this post might
> be helpful:
>
>     http://article.gmane.org/gmane.comp.python.general/471411

I tried to override the "verify_request" method, it managed to get the
ClientAddress, but in this method, the Server is not yet Multithreaded
so I couldn't detect which ClientAddress correspond to which Thread.

So I look more closely at the code (TCPServer, SimpleXMLRPCServer...)
and I finally manage to do what I wanted to do, with overriding the
"finish_request" method and storing the ClientAddresses in a dict
(with the Thread ID as the key) :

--
def finish_request(self, request, client_address):
  # Override the finish_request to collect the client address
  self.dictClientAddress[str(thread.get_ident())]=client_address
  SimpleXMLRPCServer.SimpleXMLRPCServer.finish_request(self, request,
client_address)
--

And now it works !

But I still have a little question :

How can I do to know which method I should override to make the things work ?

Usually, I look at "python.org" but in this case, I couldn't find what
I was looking for.
Finally, I had to look at the source files to understand what I should do.

Thanks in advance...
Ju

>
> (if not, follow up to c.l.python)
>
> cheers /F
>


From MichaelDMcDonnell at yahoo.com  Thu Sep 14 11:42:52 2006
From: MichaelDMcDonnell at yahoo.com (Michael)
Date: 14 Sep 2006 08:42:52 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <pan.2006.09.14.15.36.07.509974@gmx.net>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
	<pan.2006.09.14.15.36.07.509974@gmx.net>
Message-ID: <1158248572.373909.53420@d34g2000cwd.googlegroups.com>

I guess, I still don't see how this will work. I'm receiving a C
zero-terminated string in my Python program as a 1K byte block (UDP
datagram). If the string sent was "abc", then what I receive in Python
is <a><b><c><0><garbage><garbage>...<last_garbage_byte>. How is Python
going to know where in this 1K byte block the end of the string is? It
seems that what I need to do is tell Python that the string ends at
zero-relative index 3. What am I missing here?

Marc 'BlackJack' Rintsch wrote:
> In <1158247587.541483.266640 at k70g2000cwa.googlegroups.com>, John Machin
> wrote:
>
> > In other words, if the last byte of strg is NUL, throw it away.
> >
> > The truly paranoid would code that as
> >     if strg and strg[-1] etc etc
> > so that it wouldn't blow up if strg is empty -- strange things can
> > happen when you are reading other people's data :-)
>
> I would spell it:
>
> if strg.endswith('\0'):
>     strg = strg[:-1]
> 
> Ciao,
> 	Marc 'BlackJack' Rintsch



From mikeowens at gmail.com  Tue Sep 12 14:34:41 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 13:34:41 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158081840.659296.286340@b28g2000cwb.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
Message-ID: <df2316bd0609121134r2b2e6fd5of452430da6b74504@mail.gmail.com>

On 12 Sep 2006 10:24:00 -0700, mensanator at aol.com <mensanator at aol.com> wrote:

> So, knowing that, would you agree that
>
> <quote Python Library Reference 13.13>
> If switching to a larger database such as PostgreSQL or Oracle
> is later necessary, the switch should be relatively easy.
> </quote>
>
> is misleading if not outright untruthful?

Not in the least.

If you know what you are doing from a database perspective (not just a
SQLite perspective), migrating data to another database is exactly
that -- relatively easy. That means, you may have to recreate or
modify your schema for the target database -- and this is true in ALL
databases. Native datatypes vary from system to system, and some
systems support user-defined data types, in which case your schema
will definitely have to be modified. How would you migrate a CIDR type
in PostgreSQL to a numeric field in Oracle? You have to work at it.

Next, as far as transferring you data, you most likely have to resort
to some delimited format, or INSERT statements, which is no different
than any other database.

So,  I would call that relatively easy without a stretch, and
certainly no different than migrating data with any other database.

Really, how is this different than migrating data to/from any other database?

> > > whether I can make this work in my application. Lying about
> > > it makes you sound like Microsoft.
> >
> > Lying? Whose lying?
>
> See above quote. And while you're at it, see the sqlite docs
> about how the SQL Language Specification of static typing
> is a bug.

Both of which have been addressed in detail. The above quote is not
even stretching the truth, and the latter fact is a deviation that
SQLite has every right to make because they, and not you, wrote the
software. Furthermore, it is very clearly stated on the website.

So how is that a lie?

> No, it's misleading and full of errors (this is the Python docs
> I'm referring to).

I didn't join this thread because of Python's documentation, and I've
made that clear. I am here because you are unjustly vilifying the
SQLite project.

> > Ever volunteered to help out?
>
> That's what this thread was about, testing the waters.
> No point making bug reports if I'm the one who's wrong.
> But it turns out I'm not wrong, sqlite IS goofy and this
> should be pointed out.

Then be a man and point it out on the SQLite mailing list, where you
can be called on it, rather than ranting about it here.

> But why does it have to be wrong? It's just as easy to get
> things right. Isn't that your complaint, that if I read the sqlite
> docs first, the riculous examples in the Python docs would
> have made more sense? Why didn't the guy writing the Python
> docs read the sqlite docs first?

First, SQLite's approach is no more wrong than any other database's
deviation from the standard. Second, as I've said, I'm not here for
the Python issues. I think they'll get things sorted out in due time,
and people on this list have been very receptive to your feedback.

> > Do you honestly think the two core developers
> > of SQLite have some secret agenda to deceive you or the world into
> > using SQLite?
>
> Why do they claim that the SQL Language Specification of
> static typing is a bug? That's simply a lie. Why do they claim
> they've "fixed" it in a backwards compatible way? That's another
> lie.

It's not a lie at all. Are you incapable of comprehending the context
of that text? Do you not understand that it effectively says "This is
the way we do things. It's not in agreement with the SQL standard. We
know that, we are doing it this way, and here's how it works, take it
or leave it." And the whole bug in the SQL standard, if you can't
tell, is called humor.

> Why didn't they simply say they have an alternative to static
> typing?

They did. You couldn't understand that from the documentation?

> Because part of the deception is to make people think
> there is something wrong with static typing.

Yes, it's really an underhanded conspiracy designed to deceive and
mislead on a global scale. I can just see the developers sitting
around plotting:

"Hey, let's write some free software. Yeah let's give the code away
for free and not make a dime from it. Yeah, and then let's make up a
bunch of lies to make people want to use it, so we can continue to not
make a dime from it. And let's slander the SQL standard, and say all
sorts nasty things about it. Yeah, that's how we'll spend our nights
and weekends."

You really need to find some fault that will stick at this point, don't you?

They're really up to something.

> And what do you get when you implement all these kluges?
> A database that effectively is static typed.

Only if you want one. Otherwise, you have the freedom of dynamic
typing, which other databases don't afford. So, you in fact have more
freedom than you do than with databases that only offer strict typing.

> Do you still think static typing is a bug?

Did I say this, ever? I am not the SQLite website.

I don't think either is a bug. Both are two different viewpoints used
to solve a particular problem. Dynamic typing and type affinity can be
incredibly useful, especially for prototyping and scripting languages.
I don't have to dump and reload my tables if I want to change a column
I am testing out. I just delete me data, reload it, and get my program
to store a different representation in the column. And when I need
strict typing, I simply declare a check constraint. So no, you can't
say that your particular need for static typing meets all criteria for
all developers using SQLite. And frankly, if SQLite doesn't meet my
requirements, rather than badmouthing SQLite, I use another database,
such as PostgreSQL.

And they are entirely correct in saying that you are provided the
facilities to implement strict typing. You are given five native
storage classes and the means to ensure that only data of those
classes is stored in columns. What's all the fuss?

Again, SQLite is completely up front about its approach to typing. I
still don't see how is it that anyone is lying to you.


From michael at guerrilla-games.com  Fri Sep  1 07:37:05 2006
From: michael at guerrilla-games.com (Michael Malinowski)
Date: Fri, 1 Sep 2006 13:37:05 +0200
Subject: dictionaries - returning a key from a value
Message-ID: <002101c6cdba$f37c2b50$a8e7ca2b@guerrillagames.com>

Appologies if this is a somewhat simple question, but currently I can return
a value from a dictionary using its key by doing :

 

 dDictionary.get( key )

 

However, I am curious to know if its possible to get the key from giving a
value (basically the opposite of what I did above, instead of getting a
value from a key, I want the key from a value). Is there a way of doing
this? Or would I need to cycle all the keys until I hit a value match (which
seems somewhat cumbersome). 

 

Cheers

Mike. 

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From steve at holdenweb.com  Sat Sep 30 18:12:42 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 23:12:42 +0100
Subject: "Wiki in 10 minutes"
In-Reply-To: <C81EEA2F-26E2-4AB0-928D-751280C6E460@thingmajig.org>
References: <C81EEA2F-26E2-4AB0-928D-751280C6E460@thingmajig.org>
Message-ID: <efmq37$glt$1@sea.gmane.org>

Michiel Sikma wrote:
> Hello everybody.
> 
> I recently had a bit of data loss and, among some other minor things,  
> lost my bookmarks. I once bookmarked this video tutorial which  
> allegedly showed how to make a wiki in 10 minutes with some Python  
> network framework. Does anybody know which one it might have been?  
> I've been meaning to do it for some time now.
> 
> Any other links pertaining to the creation of web applications with  
> Python, which I'm only just getting into, would also be appreciated.  
> Thanks!

http://www.turbogears.org/docs/tutorials/wiki20/
TurboGears: 20 Minute Wiki Tutorial

http://wiki.python.org/moin/WebProgramming
Web Programming - PythonInfo Wiki

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From skip at pobox.com  Tue Sep 26 14:52:01 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 26 Sep 2006 13:52:01 -0500
Subject: Whither binary search?
In-Reply-To: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
Message-ID: <17689.30417.730489.683724@montanaro.dyndns.org>

bisect...

Skip


From ms at cerenity.org  Thu Sep 28 15:43:27 2006
From: ms at cerenity.org (Michael)
Date: Thu, 28 Sep 2006 20:43:27 +0100
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
	<mailman.405.1158107055.5279.python-list@python.org>
	<7x4pv753mq.fsf@ruckus.brouhaha.com>
	<1158622096.384055.215610@e3g2000cwe.googlegroups.com>
	<7xd59np3zy.fsf@ruckus.brouhaha.com>
Message-ID: <451c25d6$0$24474$ed2e19e4@ptn-nntp-reader04.plus.net>

Paul Rubin wrote:

> "Michael Sparks" <sparks.m at gmail.com> writes:
>> > Kamaelia doesn't attempt concurrency at all.  Its main idea is to use
>> > generators to simulate microthreads.
>> 
>> Regarding Kamaelia, that's not been the case for over a year now.
>> 
>> We've had threaded components as well as generator based ones since
>> around last July, however their API stablised properly about 4 months
>> back. If you use C extensions that release the GIL and are using an OS
>> that puts threads on different CPUs then you have genuine concurrency.
>> (those are albeit some big caveats, but not uncommon ones in python).
> 
> Oh neat, this is good to hear.

:) 

Ironically it was worth mentioning because we made a number of optimisations
earlier in the year specifically to make it such that CPU usage of Kamaelia
systems was much lower generally speaking to allow us to take advantage of
multiple CPUs where available for an internal project described here:
   * http://kamaelia.sourceforge.net/KamaeliaMacro.html

A "look, but can't get" front end here:

   * http://bbc.kamaelia.org/cgi-bin/blog/blog.cgi

Code here:

http://svn.sourceforge.net/viewvc/kamaelia/trunk/Code/Python/Kamaelia/Examples/DVB_Systems/Macro.py?view=markup

If there were (say) 4 CPUs or cores on that system, then the graphline at
the end could become:

Graphline(
     SOURCE=DVB_Multiplex(freq, pids["NEWS24"] + 
                                pids["BBC ONE"] + 
                                pids["CBBC"] + 
                                pids["BBC TWO"]+pids["EIT"],
                          feparams),
     DEMUX=DVB_Demuxer({
         600: ["BBCONE"],
         601: ["BBCONE"],
         610: ["BBCTWO"],
         611: ["BBCTWO"],
         620: ["CBBC"],
         621: ["CBBC"],
         640: ["NEWS24"],
         641: ["NEWS24"],
         18: ["BBCONE","BBCTWO", "CBBC","NEWS24"],
     }),
     NEWS24 = ChannelTranscoder(service_ids["NEWS24"], **params["HI"]),
     BBCONE = ChannelTranscoder(service_ids["BBC ONE"], **params["HI"]),
     BBCTWO = ChannelTranscoder(service_ids["BBC TWO"], **params["HI"]),
     CBBC = ChannelTranscoder(service_ids["CBBC"], **params["HI"]),
     linkages={
       ("SOURCE", "outbox"):("DEMUX","inbox"),
       ("DEMUX", "NEWS24"): ("NEWS24", "inbox"),
       ("DEMUX", "BBCONE"): ("BBCONE", "inbox"),
       ("DEMUX", "BBCTWO"): ("BBCTWO", "inbox"),
       ("DEMUX", "CBBC"): ("CBBC", "inbox"),
     }
).run()

And that would naturally take advantage of all 4 CPUs.

Admittedly this is in a limited scenario right now, and is the exception not
the rule, but does give an idea of where we'd like to end up, even if at
the moment, like most people's machines, we default to making the most of a
single CPU :-)

So, whilst we don't automatically parallelise your code, or magically run
across multiple CPUs, and whether that happens really depends on how
practical it is. (I must admit I suspect it is doable though, and will be
something worth addressing, and I'll look at it at some point if no-one
else does :-)

At the moment this means components explicitly working that way (such as the
above ones do by the way the transcoder works). However I suspect explicit
parallelisation or hinting for parallelisation (eg via baseclass, perhaps
metaclass) will be doable and can be intuitive and practical :-) I might
be alone in believing that of course :-)

>> Personally, I'm very much in the camp that says "shared data is
>> invariably a bad idea unless you really know what you're doing"
>> (largely because it's the most common source of bugs for people where
>> they're trying to do more than one thing at a time). People also
>> generally appear to find writing threadsafe code very hard. (not
>> everyone, just the people who aren't at the top end of the bell curve
>> for writing code that does more than one thing at a time)
> 
> I don't think it's that bad.  Yes, free-threaded programs synchronized
> by seat-of-the-pants locking turns to a mess pretty quickly. 

That's an agreement with my point (or rather I'm agreeing

> But ordinary programmers write real-world applications with shared data
> all the time, namely database apps.  

I don't call that shared data because access to the shared data is
arbitrated by a third party - namely the database. I mean where 2 or more
people[*] hold a lock on an object and share it - specifically the kind of
thing you reference above as turning into a mess.

[*] Sorry, I have a nasty habit of thinking of software as little robots or
    people. I blame usborne books of the early 80s for that :-)

> This is just silly, and wasteful of the
> efforts of the hardworking chip designers who put that nice cache
> coherence circuitry into our CPU's, to mediate shared data access at
> the sub-instruction level so we don't need all that IPC hair.

Aside from the fact it's enabled millions of programmers to deal with
shared data by communicating with a database?

> Basically if the hardware gods have blessed us with concurrent cpu's
> sharing memory, it's our nerdly duty to figure out how to use it. 

It's also our duty to figure out to make it easier for the bulk of
programmers though. After all, that's the point of an operating system or
programming language in many respects, or can be the aim of a library :-)
(your mileage may well vary)

Incidentally, it's worth noting that for the bulk of components (not all)
we don't do copying between things anymore. We used to before doing
optimisations earlier this year because we took the simplest, most
literal implementation of the metaphor as the starting point (a postman
picking up messages from an outbox, walking to another desk/component
and delivering to the inbox).

For generator based components we collapse inboxes into outboxes which means
all that's happening when someone puts a piece of data into an outbox,
they're simply saying "I'm no longer going to use this", and the recipient
can use it straight away.

This is traditional-lock free, and the at the same time encourages safety
because of the real world metaphor - once I post something through a letter
box, I can't do anything more with it. This also has natural performance
benefits. Sure people can break the rules and odd things can happen, but
the metaphor encourages people not to do that.

(For thread based components Queue.Queues are used)

> We need better abstractions than raw locks, but this is hardly new.
> Assembly language programmers made integer-vs-pointer aliasing or
> similar type errors all the time, so we got compiled languages with
> type consistency enforcement.  Goto statements turned ancient Fortran
> code into spaghetti, so we got languages with better control
> structures.  We found memory allocation bookkeeping to do by hand in
> complex programs, so we use garbage collection now.

I think you're essentially agreeing in principle here or I'm agreeing with
you in principle.

> And to deal with 
> shared data, transactional databases have been a very effective tool
> despite all the inefficiency mentioned above.

I think I'm still agreeing here :-)

> Lately I've been reading about "software transactional memory" (STM),
> a scheme for treating shared memory as if it were a database, without
> using locks except for during updates.  In some versions, STM
> transactions are composable, so nowhere near as bug-prone as
> fine-grained locks; and because readers don't need locks (they instead
> have to abort and restart transactions in the rare event of a
> simultaneous update) STM actually performs -faster- than traditional
> locking.  I posted a couple of URL's in another thread and will try
> writing a more detailed post sometime.  It is pretty neat stuff.
> There are some C libraries for it that it might be possible to port to
> Python.

I've been hearing about it as well, but not digged into it. If the promises
hold out as people hope, I'd hope to add in support into Kamaelia if it
makes any sense (probably would because the co-ordinating assistant tracker
is a potential location this would be helpul for). 

Whilst we're a component system, my personal aim is to make it easier for
people to write maintainable software that uses concurrency naturally
because its easier. OK, that might be mad, but if the side effect is trying
things that might make people's lives easier I can live with that :-)

Interestingly, because of some of the discussions in this thread I took a
look at Erlang. Probably due to it's similarities, in passing, to occam,
there's some stark similarities to Kamaelia there as well - mailboxes, the
ability for lightweight threads to hibernate, that sort of thing.

The difference really is that I'm not claiming this is special to the
particular language (we've got a proof of concept in C++ after all), and
we're aiming to use metaphors that are accessible, along with a bunch of
code as a proof of concept that we're finding useful. Whilst this is *soo*
the wrong place to say it, I'd really like to see a C++ or Java version
simply to see what has to change in a statically typed environment.

I suppose the other thing is that I'm not saying we're right, just that
we're finding it useful, and hoping others do too :-) (a couple of years
ago it was "we don't know if it works, but it might", now at least I'm at
the stage "This works, at least for us and a few others, it might for you",
which in my mind quite a jump :)

If you do dig out those STM references, I'd be interested :-)

Regards,


Michael.



From sjmachin at lexicon.net  Mon Sep 18 07:51:18 2006
From: sjmachin at lexicon.net (John Machin)
Date: 18 Sep 2006 04:51:18 -0700
Subject: incompatible exit values between python 2.4 and 2.5
In-Reply-To: <4n76s5F90g5kU1@uni-berlin.de>
References: <1158567676.994720.103690@e3g2000cwe.googlegroups.com>
	<4n76s5F90g5kU1@uni-berlin.de>
Message-ID: <1158580277.944054.245870@h48g2000cwc.googlegroups.com>


Diez B. Roggisch wrote:
> > 1) is this change of behaviour documented somewhere and did I miss
> > that, or has this not been documented (yet)
> > 2) Is there a build-in way to set the exit value for Python in case an
> > exception is raised that is uncaught and causes python to terminate? (I
> > have now implemented something using
> >    try:
> >       ...
> >    except ImportError, comment:
> >       sys.exit(2)
> >    except:
> >       sys.exit(1)
> > but I still have to figure out how to print the stacktrace before
> > exiting with specific values.)
>
> For the latter, take a look at
>
> sys.exc_info()
> 

 or perhaps the traceback module ...

Cheers,
John



From rhymes at myself.com  Tue Sep 19 16:57:59 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Tue, 19 Sep 2006 22:57:59 +0200
Subject: How to get a Fix to an Abandoned Project?
References: <mailman.296.1158699367.10491.python-list@python.org>
Message-ID: <1hlxp3x.1dtd1eug5y80N%rhymes@myself.com>

Gregory Pi?ero <gregpinero at gmail.com> wrote:
> Otherwise any other advice is welcome.  Should I just post
> the code somewhere else, etc?

Maybe you can fork and maintain it somewhere else...

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From kw at kevin-walzer.com  Fri Sep 15 16:34:25 2006
From: kw at kevin-walzer.com (Kevin Walzer)
Date: Fri, 15 Sep 2006 16:34:25 -0400
Subject: Question about pipes/os.popen
In-Reply-To: <mailman.145.1158345496.10491.python-list@python.org>
References: <2b07f$450abbba$4275d90a$23270@FUSE.NET>
	<mailman.145.1158345496.10491.python-list@python.org>
Message-ID: <450B0E51.10905@kevin-walzer.com>

Steve Holden wrote:


>>
> Probably expecting sudo to read the standard input for its password.
> 
> First of all, sudo doesn't always ask for your password. Secondly, when
> it does I'm pretty sure it will take care to try and do it on the
> controlling tty, not by reading stdin.
>

sudo wasn't the problem. I've used a similar command structure (echo foo
| sudo -S command) to invoke sudo from a program.

Here's the code I used to get this running successfully:

---
import os


file = os.popen('echo foo| sudo -S /usr/sbin/tcpdump  -v  -i en1', 'r')


for line in file:
    print line
---

I left out the "r" flag. D'oh.

I've gotten a bit lost among the various ways of invoking external
commands in Python (spawn, popen, system, subprocess). I'm glad os.popen
still works.

-- 
Kevin Walzer
Poetic Code
http://www.kevin-walzer.com


From toby at tobiah.org  Wed Sep 27 12:13:44 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 09:13:44 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <mailman.800.1159371630.10491.python-list@python.org>
References: <mailman.746.1159307893.10491.python-list@python.org>	<451A9824.6040106@tobiah.org>
	<mailman.800.1159371630.10491.python-list@python.org>
Message-ID: <451AA338.4030607@tobiah.org>

Simon Brunning wrote:
> On 9/27/06, tobiah <toby at tobiah.org> wrote:
>> Suppose I fill an list with 100 million random integers in the range
>> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>> of '12345' pointed to the same integer object?  Why should more be made,
>> when they all do the same thing, and are not subject to change?
> 
> If you were to drop that list, then to generate another large list of
> integers, you'd want to re-use the memory from the first lot, wouldn't
> you?
> 
> (BTW, AFAIK, integers are kept seperate from other objects
> memory-wise, so memory used for integers won'tr be re-used for other
> object types. but memory used for integers can be re-used for *other*
> integers. I think.)
> 

I'm confused now, but yes, I would want to reuse the memory for
the other integers.  That's why I understand why I get the same
id back for small integers, but why limit that to (-5, 257)?

Thanks,

Toby



From apardon at forel.vub.ac.be  Wed Sep 13 08:35:40 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 13 Sep 2006 12:35:40 GMT
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
	<4mq4h5F76akiU1@uni-berlin.de>
	<slrnegfoic.f0c.apardon@rcpc42.vub.ac.be>
	<4mq6slF7ak7iU1@uni-berlin.de>
Message-ID: <slrnegfuos.f0c.apardon@rcpc42.vub.ac.be>

On 2006-09-13, Diez B. Roggisch <deets at nospam.web.de> wrote:
>>> In general, that is true for the 21st century. But under certain
>>> circumstances, one might be forced to use a vi over a limited b/w
>>> terminal to fix that goddamn bug on the live system.
>> 
>> AFAIR, even those terminals had a form of highlighting. And personnaly
>> I would think PEP 0263 would be potentially more annoying than this
>> idea in those circumstances.
>
> How so? Because some less important string literals  might be fucked up?
> Certainly can that cause trouble, but having the trouble for each and every
> keyword is a huge difference.

Viewing such an unimportant string literal might lockup your terminal,
because your terminal interprets it as somekind of control sequence.
Your keyword trouble would probably be less than looking at html code
in those circumstances.

>>> Even though you don't care about the pesky details, it boils down to
>>> introducing an escape mechanism that will surround whatever identifiers
>>> there are. Which looks crap in anything except and python-aware editor.
>>>
>>> But I bet you don't work with e.g. subversion to display diffs and the
>>> like...
>> 
>> I wouldn't be surprised that looking at diffs from files that use
>> PEP 0263 could look like crap too. Yes some decisions can cause
>> some tools to be less usefull. I would say that the right cause
>> of action is then to adapt those tools. Not to let something like
>> that stop your decision.
>
> The same reasoning as above applies. 
>
> And sure you would say that - the day you admit to have suggested a stupid
> thing won't be in my hopefully long-standing life span. 

That you don't like it, is not the same as stupid. Your two arguments
against, have nothing to do with the quality of the suggestion within
the langauge but only with problems of the envinronment.

You know, if I want, I can probably turn up some old terminal where
you can only type uppercase letters. What if under certain circumstance
I would be forced, to use this old thing. Would I then have a rightfull
complaint against python because it is case significant?

-- 
Antoon Pardon


From bjobrien62 at gmail.com  Thu Sep 28 14:16:03 2006
From: bjobrien62 at gmail.com (SpreadTooThin)
Date: 28 Sep 2006 11:16:03 -0700
Subject: how do you know if open failed?
Message-ID: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>

f = open('myfile.bin', 'rb')

How do I know if there was an error opening my file?



From ldo at geek-central.gen.new_zealand  Wed Sep 27 06:01:03 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 22:01:03 +1200
Subject: Python/MySQL problem on Windows
References: <qhk63yb7fs.fsf@ruckus.brouhaha.com>
	<mailman.350.1158785240.10491.python-list@python.org>
	<qhfyemb5oa.fsf@ruckus.brouhaha.com>
Message-ID: <efdi34$uqq$2@lust.ihug.co.nz>

In message <qhfyemb5oa.fsf at ruckus.brouhaha.com>, Eric Smith wrote:

> I could have sworn that I got the use of connection() from published
> sample code, but I must be mistaken.

If all else fails, read the documentation
<http://www.python.org/dev/peps/pep-0249/>,


From george.sakkis at gmail.com  Fri Sep  8 10:29:15 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 8 Sep 2006 07:29:15 -0700
Subject: Negation in regular expressions
References: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
	<1157688095.796720.270380@m73g2000cwd.googlegroups.com>
Message-ID: <1157725755.940440.51040@p79g2000cwp.googlegroups.com>

Paddy wrote:

> George Sakkis wrote:
> > It's always striked me as odd that you can express negation of a single
> > character in regexps, but not any more complex expression. Is there a
> > general way around this shortcoming ? Here's an example to illustrate a
> > use case:
> >
> > >>> import re
> > # split with '@' as delimiter
> > >>> [g.group() for g in re.finditer('[^@]+', 'This @ is a @ test ')]
> > ['This ', ' is a ', ' test ']
> >
> > Is it possible to use finditer to split the string if the delimiter was
> > more than one char long (say 'XYZ') ? [yes, I'm aware of re.split, but
> > that's not the point; this is just an example. Besides re.split returns
> > a list, not an iterator]
> >
> > George
>
> If your wiling to use groups then the following will split
>
> >>> [g.group(1) for g in re.finditer(r'(.+?)(?:@#|$)', 'This @# is a @# test ')]
> ['This ', ' is a ', ' test ']

Nice! This covers the most common case, that is non-consecutive
delimiters in the middle of the string. There are three edge cases:
consecutive delimiters, delimiter(s) in the beginning and delimiter(s)
in the end.

The regexp r'(.*?)(?:@#|$)' would match re.split's behavior if it
wasn't for the last empty string it returns:
>>> s = '@# This @# is a @#@# test '
>>> re.split(r'@#', s)
['', ' This ', ' is a ', '', ' test ']
>>> [g.group(1) for g in re.finditer(r'(.*?)(?:@#|$)', s)]
['', ' This ', ' is a ', '', ' test ', '']

Any ideas ?

George



From gagsl-py at yahoo.com.ar  Tue Sep 12 03:54:00 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 04:54:00 -0300
Subject: PILGraph Upgrade or Alternative Suggestion
In-Reply-To: <pN3Mg.4676$y61.3564@fed1read05>
References: <pN3Mg.4676$y61.3564@fed1read05>
Message-ID: <7.0.1.0.0.20060912045339.03b3ee60@yahoo.com.ar>

At Thursday 7/9/2006 22:35, Roger wrote:

>Anyone have an updated version of PILGraph beyond 0.1a7 or a suggestion
>for a light-weight alternative?

pychart



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From onurb at xiludom.gro  Wed Sep 20 12:03:08 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 20 Sep 2006 18:03:08 +0200
Subject: Nested Looping SQL Querys
In-Reply-To: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
References: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
Message-ID: <4511663d$0$25369$626a54ce@news.free.fr>

Fuzzydave wrote:
> I am back developing futher our Python/CGI based web application run by
> a Postgres DB
> and as per usual I am having some issues. It Involves a lot of Legacy
> code. 

s/Legacy/Norwegian Blue/


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From jstroud at mbi.ucla.edu  Tue Sep 19 19:33:26 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 19 Sep 2006 23:33:26 GMT
Subject: find class where method was defined ?
In-Reply-To: <1158708758.721787.232600@i3g2000cwc.googlegroups.com>
References: <1158708758.721787.232600@i3g2000cwc.googlegroups.com>
Message-ID: <a7%Pg.2837$GR.310@newssvr29.news.prodigy.net>

Simon Burton wrote:
>>>>class A(object):
> 
> ...   def foo(self): pass
> ...
> 
>>>>class B(A):
> 
> ...   pass
> ...
> 
>>>>b=B()
>>>>b.foo
> 
> <bound method B.foo of <__main__.B object at 0xb7b1924c>>
> 
> How can I work out what class b.foo was defined in ?
> 
> 
> Simon.
> 

b.__class__

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From deets at nospam.web.de  Wed Sep 27 08:23:13 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 27 Sep 2006 14:23:13 +0200
Subject: How to apply text changes to HTML,
	keeping it intact if inside "a" tags
References: <1159329066.218346.27310@d34g2000cwd.googlegroups.com>
Message-ID: <4nv8phFc6f9cU1@uni-berlin.de>

vbfoobar at gmail.com wrote:

> Hello,
> 
> I have HTML input to which I apply some changes.
> 
> Feature 1:
> =======
> I want to tranform all the text, but if the text is inside
> an "a href" tag, I want to leave the text as it is.
> 
> The HTML is not necessarily well-formed, so
> I would like to do that using BeautifulSoup (or
> maybe another tolerant parser).
> 

<snip/>

Use the BeautifulSoup + XSL. Writing your two features in xsl is close to a
no-brainer, and it is certainly the best tool for the job.

And there are a few implementations for python available.

Diez


From simonwittber at gmail.com  Wed Sep 13 06:57:11 2006
From: simonwittber at gmail.com (Simon Wittber)
Date: 13 Sep 2006 03:57:11 -0700
Subject: Help me use my Dual Core CPU!
In-Reply-To: <1158137967.711307.11190@h48g2000cwc.googlegroups.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<1158137967.711307.11190@h48g2000cwc.googlegroups.com>
Message-ID: <1158145030.957893.51010@h48g2000cwc.googlegroups.com>

Paul Boddie wrote:
> Simon Wittber wrote:
> > Michael wrote:
> > > Also, Paul Boddie posted a module for parallel systems a while back as well
> > > which might be useful (at least for ideas):
> > >    * http://cheeseshop.python.org/pypi/parallel
> > >
> > I've just noticed that os.fork is not available on Win32. Ouch.
>
> Sorry! My motivation was to support operating systems that I personally
> care about and which also have solutions for transparent process
> migration, which I believe could be used in conjunction with the
> pprocess module for better-than-thread parallelisation.

Ah don't be sorry! I don't care about Win32 a whole lot either, its
just that most of my target market use Win32...

> Rumour has it that recent versions of Windows provide fork-like
> semantics through a system call. Your mission is to integrate this
> transparently into the standard library's os.fork function. ;-)

I'm not sure I'm up to this kind of low level stuff, though if the itch
really starts to _itch_, I might have a crack at scratching it. :-)


-Sw



From MonkeeSage at gmail.com  Mon Sep 11 23:26:43 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 11 Sep 2006 20:26:43 -0700
Subject: How to get the "longest possible" match with Python's RE module?
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
Message-ID: <1158031603.390298.27720@d34g2000cwd.googlegroups.com>

Licheng Fang wrote:
> Basically, the problem is this:
>
> >>> p = re.compile("do|dolittle")
> >>> p.match("dolittle").group()
> 'do'

>From what I understand, this isn't python specific, it is the expected
behavior of that pattern in any implementation. You are using
alternation, which means "either, or", and you have the shorter
subexpression first, so the condition is satisfied by just 'do' and the
matching terminates.

> There's another example:
>
> >>> p = re.compile("one(self)?(selfsufficient)?")
> >>> p.match("oneselfsufficient").group()
> 'oneself'

Again, I don't think this has anything to do with python. You pattern
basically means "match 'one' whether it is followed by 'self' or not,
and whether it is followed by 'selfsufficient' or not". For this
particular example, you'd want something like
"one(self)?(sufficient)?".

I think you could construct a pattern that would do what you want in
python without any problem. If you post a (short) example of your data,
I'm sure someone could help you with it.

Regards,
Jordan



From kylotan at gmail.com  Wed Sep  6 08:24:45 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 6 Sep 2006 05:24:45 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <44fe89d0$0$31634$626a54ce@news.free.fr>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<44fe89d0$0$31634$626a54ce@news.free.fr>
Message-ID: <1157545485.477097.306540@m79g2000cwm.googlegroups.com>

Bruno Desthuilliers wrote:
> mensanator at aol.com wrote:
> > I don't mind living with it as long as it's documented.
>
> It is. In SQLite manual. Or do you hope the Python manual to also fully
> document PostgreSQL, MySQL, Oracle, Apache, Posix, Win32 etc ?

With those other applications, you have a separate download. With
sqlite, you don't, on Windows at least. Surely all the 'included
batteries' should have local documentation, especially with the type
conversions.

-- 
Ben Sizer



From jstroud at mbi.ucla.edu  Wed Sep 27 01:07:40 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 05:07:40 GMT
Subject: What's up with site.Quitter?
In-Reply-To: <mailman.769.1159333097.10491.python-list@python.org>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
	<mailman.769.1159333097.10491.python-list@python.org>
Message-ID: <wGnSg.5103$TV3.118@newssvr21.news.prodigy.com>

Fredrik Lundh wrote:
> James Stroud wrote:
> 
>> It seems I can find a reference to just about every type except those 
>> for "exit" and "quit" in the standard library somewhere. E.g.:
>>
>> py> type(__builtins__.Ellipsis) is types.EllipsisType
>> True
>>
>> However, in an appearant break with consistency, this can not be done 
>> for "exit" and "quit" because site.Quitter is nested inside of the 
>> setquit() function in the site.py module.
> 
> 
> consistency with what?

The rest of the __builtins__.

> the exact implementation of "quit" and "exit" is implementation and 
> version dependent; if you need the type, use type(quit) and type(exit), 
> respectively.

Yes, but I was speaking more consistency than convenience (see above for 
what I mean by consistency).

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From http  Fri Sep  8 17:52:45 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 14:52:45 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
	<1157752108.456624.146270@i3g2000cwc.googlegroups.com>
Message-ID: <7xbqpqhvpu.fsf@ruckus.brouhaha.com>

"mensanator at aol.com" <mensanator at aol.com> writes:
> As long as it's included in the standard library, I'm going
> to use it. There is nothing wrong with the idea of a "lite"
> database. It is very misleading, though, to claim it's SQL.

Maybe it could be renamed by changing the "t" in "lite" to "k".


From michele.simionato at gmail.com  Thu Sep 21 04:17:00 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 21 Sep 2006 01:17:00 -0700
Subject: Request for elucidation: enhanced generators
In-Reply-To: <1158754746.300782.256090@m73g2000cwd.googlegroups.com>
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
	<mailman.323.1158750988.10491.python-list@python.org>
	<1158754746.300782.256090@m73g2000cwd.googlegroups.com>
Message-ID: <1158826619.985428.129950@i3g2000cwc.googlegroups.com>

Ben Sizer wrote:
> But do you have an example of such a use case?

Here is a 69 lines implementation of the idea of applying extended
generators to manage Web forms (obviously this is only a proof of
concept and it contains many mistakes, but you have something to get
started).
Notice that I am not claiming that this is a good idea.

  Michele Simionato

---

import datetime
import cherrypy as cp

# each user (but really should be each session) has her input loop
# one should disable the back button and implement an undo mechanism
def inputloop(user):
    start_time = datetime.datetime.today()
    cart = []
    while True: # fill the shopping cart
        item = yield locals()
        if item == 'start':
            continue
        elif item == 'end':
            break
        elif item:
            cart.append(item)
    finish_time = datetime.datetime.today()
    yield locals()

class User(object):
    def __init__(self, name):
        self.name = name
        self.inputloop = inputloop(self)
        self.inputloop.send(None) # start the user loop

users = dict(michele=User('michele'))

class Root(object):
    @cp.expose
    def login_welcome(self):
        yield 'hello!'
        yield '<form action="login_action">'
        yield "what's your name? "
        yield '<input type="text" name="name"/>'
        yield '</form>'

    @cp.expose
    def login_action(self, name):
        yield ('<a href="shopping_loop?name=%s&item=start">'
               'You may start shopping</a><br/>') % name

    @cp.expose
    def shopping_loop(self, name, item):
        if not name in users:
            yield '%r is not a valid name; please retry' % name
            return
        user = users[name]
        status  = user.inputloop.send(item)
        if item == 'start':
            yield 'Today is %s<br/>' % status['start_time']
            yield 'Please buy something!<br/>'
        if item == 'end':
            yield 'Thanks for shopping, %s<br/>' % user.name
            yield 'You bought items %s<br/>' % status['cart']
            yield 'Today is %s' % status['finish_time']
            return
        yield '<form action="">'
        yield 'The content of your cart is %s<br/>' % status['cart']
        yield 'Please enter the item you want to buy: '
        yield '<input type="text" name="item"/><br/>'
        yield '<input type="hidden" name="name" value="%s"/>' % name
        yield '(enter end to finish)'
        yield '</form>'

    index = login_welcome

if __name__ == '__main__':
    cp.root = Root()
    cp.server.start()



From deets at nospam.web.de  Fri Sep 15 14:17:02 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 15 Sep 2006 20:17:02 +0200
Subject: how do you convert and array of doubles into floats?
In-Reply-To: <pan.2006.09.15.18.10.18.698711@gmx.net>
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
	<pan.2006.09.15.18.10.18.698711@gmx.net>
Message-ID: <4n090tF88jknU1@uni-berlin.de>

Marc 'BlackJack' Rintsch schrieb:
> In <1158342034.282295.144660 at i3g2000cwc.googlegroups.com>, SpreadTooThin
> wrote:
> 
>> I have some code...
>>
>> import array
>>
>> a = array.array('d')
>> f = open('file.raw')
>> a.fromfile(f, 10)
>>
>> now I need to convert them into floats (32 bit...) what do i do?
> 
> What about:
> 
> b = array.array('f', a)

AFAIK d and f are synonym for arrays, as python doesn't distinguish 
between these two on a type-level. And double it is in the end.

Diez


From metaperl at gmail.com  Sat Sep 23 07:33:54 2006
From: metaperl at gmail.com (metaperl)
Date: 23 Sep 2006 04:33:54 -0700
Subject: Application logging to screen and file - any favorite modules (no
	luck on cheeseshop)
In-Reply-To: <4nkdflFaj5doU1@individual.net>
References: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
	<4nkdflFaj5doU1@individual.net>
Message-ID: <1159011234.333458.262640@e3g2000cwe.googlegroups.com>


Bjoern Schliessmann wrote:
> metaperl wrote:
>
> > Hello, I am looking for a module which has
> > * log levels
> > * output to stdout and file (either/or based on config)
> > * nicely formatted log output (e.g., indentation when appropriate)
>
> Sorry for being nosey, but how'd you use indentation in a log?

I guess I was thinking more along the lines of debugging. For example,
if you have two nested loops, you can increase the indentation level of
output as you move into each loop to show where the output is coming
from.



From mensanator at aol.com  Thu Sep  7 18:19:54 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 7 Sep 2006 15:19:54 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
Message-ID: <1157667594.051943.265040@d34g2000cwd.googlegroups.com>

Bruno Desthuilliers wrote:
> mensanator at aol.com wrote:
> > Probably just me. I've only been using Access and SQL Server
> > for 12 years, so I'm sure my opinions don't count for anything.
> >
>
> SQLite never pretended to be a full-blown RDBMS - just a lightweight
> simple embedded database as SQL-compliant as possible.

Ah, *you* haven't read the documentation either!

"as SQL-compliant as possible"?

ROTFLMAO!

>From SQLite Homepage
  documentation
    Available Documentation
      Distinctive Features

<quote *emphasis added*>
This page highlights some of the characteristics of SQLite
that are unusual and which make SQLite different from many
other SQL database engines.

Manifest typing

Most SQL database engines use static typing. A datatype is
associated with each column in a table and only values of
that particular datatype are allowed to be stored in that
column. SQLite relaxes this restriction by using manifest
typing.

In manifest typing, the datatype is a property of the
value itself, not of the column in which the value is
stored. SQLite thus allows the user to store any value
of any datatype into any column regardless of the declared
type of that column. (There are some exceptions to this
rule: An INTEGER PRIMARY KEY column may only store
integers. And SQLite attempts to coerce values into the
declared datatype of the column when it can.)

***********************************************************
* The SQL language specification calls for static typing. *
***********************************************************

So some people feel that the use of manifest typing is a
bug in SQLite. But the authors of SQLite feel very
strongly that this is a feature.

**********************************************************
* The authors argue that static typing is a bug in the   *
* SQL specification that SQLite has fixed in a backwards *
* compatible way.                                        *
**********************************************************
</quote>

"Fixed"? Up until now, I didn't think it was possible for
crackpot theories to be implemented in computer science.
This is absolutely the craziest thing I've ever heard.

Manifest typing doesn't work *in theory*!! Sure, through
diligent data integrity management it can be made to work
in practice. But when that's applied, guess what? All your
fields end up having the same data type anyway. Duh.

And Python's inclusion of this into the standard library
is like the AMA endorsing homeopathy. It should have
been pointed out in the Python Manuals that SQLite3 is

----> NOT <----

SQL-compliant, never will be, and true SQL-compliant code

----> CANNOT <----

be made to work in this environment. So much for
"If switching to a larger database such as PostgreSQL or Oracle
is later necessary, the switch should be relatively easy."

That does not, of course, mean I don't have a use for a light,
simple database that's part of the standard library. But I could
have saved myself a lot of wailing and gnashing of teeth if I
hadn't been lied to by the Python documentation that, like you,
has the mistaken belief that SQLite3 is SQL-compliant.

Fixing the documentation is now becoming an enormous task.

What are the chances that anything I send in as a bug report
will simply be ignored? Kind of like the Emporer's New Clothes, eh?
It would be an admission of ignorance and stupidity on the part
of the Python Development Team, wouldn't it?

> In it's category,
> it beats Access and MySQL hands down. Now if you want a real RDBMS,
> you've just failed to choose the right tool. May I suggest PostgreSQL ?
>
> (snip useless rant)
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in 'onurb at xiludom.gro'.split('@')])"



From blair.houghton at gmail.com  Mon Sep 25 20:39:10 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 25 Sep 2006 17:39:10 -0700
Subject: Timeline for Python?
In-Reply-To: <ef8lk5$cu1$1@panix3.panix.com>
References: <mailman.497.1159035007.10491.python-list@python.org>
	<1159060365.363391.238090@d34g2000cwd.googlegroups.com>
	<ef8lk5$cu1$1@panix3.panix.com>
Message-ID: <1159231150.625846.205860@h48g2000cwc.googlegroups.com>


Aahz wrote:
> You did see my advice, seconded by Wes, that any book should cover the
> version differences?  How is that sufficiently inadequate that new books
> should specifically target older versions?

I think it's a good idea, but I also think that it may cause authors to
rely on the old documentation.  The problem is the old documentation
is inadequate.  New documentation should account for new things that
are known about the old versions, not just the implemented changes in
the software.

--Blair



From fredrik at pythonware.com  Mon Sep 25 08:43:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 14:43:52 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><ef5lb9$h1k$2@lust.ihug.co.nz>
	<ef5ncc$uus$1@news.albasani.net>
	<slrnehe80c.rk8.jon+usenet@snowy.squish.net>
Message-ID: <ef8iu8$ehl$1@sea.gmane.org>

Jon Ribbens wrote:

> Or if the design, as described in the documentation, is flawed in some
> way.

it does exactly what it says, and is perfectly usable as is, if you bother to
use it the way it was intended to be used.

(still waiting for the "jon's enhanced escape" proposal, btw, but I guess it's
easier to piss on others than to actually contribute something useful).

</F> 





From felipe.lessa at gmail.com  Fri Sep 29 05:40:49 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Fri, 29 Sep 2006 06:40:49 -0300
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
Message-ID: <c2701f5c0609290240t4cbcacbbg2f4eb3a7d073d00f@mail.gmail.com>

28 Sep 2006 19:07:23 -0700, Larry Hastings <larry at hastings.org>:
> THE BENCHMARKS
>
> Benchmark 1:
>         def add(a, b, c, ... t): return a + b + c + ... + t
>         for i in range(10000000): add("aaa", "bbb", "ccc", ..., "ttt")
[snip]

What about "a + b"? Or "a + b + c"? Does it have a large overhead on
small string concatenations?

-- 
Felipe.


From fredrik at pythonware.com  Tue Sep 19 08:42:41 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 19 Sep 2006 14:42:41 +0200
Subject: How to efficiently proceed addition and subtraction in pythonlist?
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>	<mailman.245.1158619745.10491.python-list@python.org><1158653474.356424.319980@d34g2000cwd.googlegroups.com>
	<eeonls$sdt$1@sea.gmane.org>
Message-ID: <eeook1$vtc$1@sea.gmane.org>

Steve Holden wrote:

> And statements like that are probably going to annoy me ;-)
>
>  >>> t = timeit.Timer("b = map(lambda x: x-1, a)", setup="a=[1,2,3]")
>  >>> t.timeit()
> 2.4686168214116599
>  >>> t = timeit.Timer("b = [x-1 for x in a]", setup="a=[1,2,3]")
>  >>> t.timeit()
> 0.9930245324475635
>  >>>

And now someone's probably reading this and thinking that list comprehensions
are *always* faster than "map"...

</F> 





From sjmachin at lexicon.net  Mon Sep 25 04:17:47 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 01:17:47 -0700
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org>
Message-ID: <1159172267.138937.135800@d34g2000cwd.googlegroups.com>

willie wrote:
> (beating a dead horse)
>
> Is it too ridiculous to suggest that it'd be nice
> if the unicode object were to remember the
> encoding of the string it was decoded from?

Where it's been is irrelevant. Where it's going to is what matters.

> So that it's feasible to calculate the number
> of bytes that make up the unicode code points.
>
> # U+270C
> # 11100010 10011100 10001100
> buf = "\xE2\x9C\x8C"
>
> u = buf.decode('UTF-8')
>
> # ... later ...
>
> u.bytes() -> 3
>
> (goes through each code point and calculates
> the number of bytes that make up the character
> according to the encoding)

Suppose the unicode object was decoded using some encoding other than
the one that's going to be used to store the info in the database:

| >>> sg = '\xc9\xb5\xb9\xcf'
| >>> len(sg)
| 4
| >>> u = sg.decode('gb2312')

later:
u.bytes() => 4

but

| >>> len(u.encode('utf8'))
| 6

and by the way, what about the memory overhead of storing the name of
the encoding (in the above case 7 (6 + overhead))?

What would u"abcdef".bytes() produce? An exception?

HTH,
John



From sjmachin at lexicon.net  Wed Sep 20 19:57:31 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 16:57:31 -0700
Subject: byte count unicode string
In-Reply-To: <mailman.356.1158792857.10491.python-list@python.org>
References: <mailman.356.1158792857.10491.python-list@python.org>
Message-ID: <1158796651.795166.223110@m7g2000cwm.googlegroups.com>


willie wrote:
>
> Thanks for the thorough explanation. One last question
> about terminology then I'll go away :)
> What is the proper way to describe "ustr" below?
>
>  >>> ustr = buf.decode('UTF-8')
>  >>> type(ustr)
> <type 'unicode'>
>
>
> Is it a "unicode object that contains a UTF-8 encoded
> string object?"

No. It is a Python unicode object, period.

1. If it did contain another object you would be (quite justifiably)
screaming your peripherals off about the waste of memory :-)
2. You don't need to concern yourself with the internals of a unicode
object; however rest assured that it is *not* stored as UTF-8 -- so if
you are hoping for a quick "number of utf 8 bytes without actually
producing a str object" method, you are out of luck.

Consider this example: you have a str object which contains some
Russian text, encoded in cp1251.

str1 = russian_text
unicode1 = str1.decode('cp1251')
str2 = unicode1.encode('utf-8')
unicode2 = str2.decode('utf-8')
Then unicode2 == unicode1, repr(unicode2) == repr(unicode1), there is
no way (without the above history) of determining how it was created --
and you don't need to care how it was created.

HTH,
John



From schoenfeld.one at gmail.com  Mon Sep 18 08:33:46 2006
From: schoenfeld.one at gmail.com (schoenfeld.one at gmail.com)
Date: 18 Sep 2006 05:33:46 -0700
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of
	Zion
In-Reply-To: <1158510107.577987.270340@d34g2000cwd.googlegroups.com>
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
	<1158503419.301412.70290@i42g2000cwa.googlegroups.com>
	<1158510107.577987.270340@d34g2000cwd.googlegroups.com>
Message-ID: <1158582826.758831.162360@e3g2000cwe.googlegroups.com>


malibu wrote:
> tadchem wrote:
> > "Protocols of the Elders of Zion" was a fraud
> > http://en.wikipedia.org/wiki/The_Protocols_of_the_Elders_of_Zion
> > http://ddickerson.igc.org/protocols.html
> > http://www.straightdope.com/mailbag/mzionprotocol.html
> > http://www.museumofhoaxes.com/hoaxorum/hoaxorum1869.html
> >
> > The fraud was proven by identifying the sources used by the plagiarist
> > in 1921, but there are *still* those who believe it because it
> > justifies their racial hatred.
> >
> > Of course, like the 'Protocols', the 9/11 conspiracy hoax will be
> > embraced by those whose will to believe something that justifies their
> > irrational prejuduces exceeds their will to understand the implications
> > of rational data.
> >
> > As can be expected, there is a lot of overlap between the hateful
> > racists of the antisemitic groups and the delusional paranoids involved
> > in the 9/11 conspiracy theories.
> >
> > Tom Davidson
> > Richmond, VA
>
> There were many people who reported
> numerous explosions in the WTC buildings.
> When the firefighters arrived all the ground
> floor windows had been blown out.
> There were explosions in the sub-basement floors
> as reported by severely-injured caretakers who
> came up from there and by
> firefighters on the scene.
>
> Seismic records substantiate these claims.
>
> Isn't 'delusional paranoia' a little less
> substantive than that?
>
> Maybe you should actually *look*
> at the data- I know as a physicist you've kinda
> gotten away from that mindset.

One should not confuse clergymen with physicists. Anyone who observes a
building freefall into itself and deny a controlled demolition can
never be called a physicist.

> John



From hongqn at gmail.com  Mon Sep  4 12:52:00 2006
From: hongqn at gmail.com (Qiangning Hong)
Date: Tue, 5 Sep 2006 00:52:00 +0800
Subject: Prevent self being passed to a function stored as a member
	variable?
In-Reply-To: <1157387972.227609.326880@e3g2000cwe.googlegroups.com>
References: <1157387972.227609.326880@e3g2000cwe.googlegroups.com>
Message-ID: <b64ef0ce0609040952n3c0edee5w533db688e47c34b9@mail.gmail.com>

On 4 Sep 2006 09:39:32 -0700, Sandra-24 <sandravandale at yahoo.com> wrote:
> How can you prevent self from being passed to a function stored as a
> member variable?
>
> class Foo(object):
>    def __init__(self, callback):
>       self.func = callback
>
> f =Foo(lambda x: x)
> f.func(1) # TypeError, func expects 1 argument, recieved 2

Do you really get that error? I got the following in my python shell:

.>>> class Foo(object):
....   def __init__(self, callback):
....     self.func = callback
....
.>>> f = Foo(lambda x: x)
.>>> f.func(1)
1


From Eric_Dexter at msn.com  Sun Sep 24 16:19:16 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 24 Sep 2006 13:19:16 -0700
Subject: newbe's re question
In-Reply-To: <mailman.519.1159087984.10491.python-list@python.org>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
	<mailman.322.1158749465.10491.python-list@python.org>
	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>
	<mailman.341.1158774359.10491.python-list@python.org>
	<1158796645.943655.180890@i3g2000cwc.googlegroups.com>
	<mailman.426.1158871980.10491.python-list@python.org>
	<1159038932.050142.245830@i3g2000cwc.googlegroups.com>
	<mailman.519.1159087984.10491.python-list@python.org>
Message-ID: <1159129156.184099.131500@m7g2000cwm.googlegroups.com>


Frederic Rentsch wrote:
> Eric_Dexter at msn.com wrote:
> > These are csound files.  Csound recently added python as a scripting
> > language and is allowing also allowing csound calls from outside of
> > csound.  The nice thing about csound is that instead of worrying about
> > virus and large files it is an interpiter and all the files look
> > somewhat like html.  4,000 virus free instruments for $20 is available
> > at
> > http://www.csounds.com and the csound programming book is also
> > available.  The downside is that csound is can be realy ugly looking
> > (that is what I am trying to change) and it lets you write ugly looking
> > song code that is almost unreadable at times (would look nice in a
> > grid)
> >
> > http://www.msn.com
> > ..
> >
> >
> > Frederic Rentsch wrote:
> >
> >> Eric_Dexter at msn.com wrote:
> >>
> >>> Frederic Rentsch wrote:
> >>>
> >>>
> >>>> Eric_Dexter at msn.com wrote:
> >>>>
> >>>>
> >>>>> Frederic Rentsch wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>> Eric_Dexter at msn.com wrote:
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> All I am after realy is to change this
> >>>>>>>
> >>>>>>>  reline = re.line.split('instr', '/d$')
> >>>>>>>
> >>>>>>> into something that grabs any line with instr in it take all the
> >>>>>>> numbers and then grab any comment that may or may not be at the end of
> >>>>>>> the line starting with ; until the end of the line including white
> >>>>>>> spaces..  this is a corrected version from
> >>>>>>>
> >>>>>>> http://python-forum.org/py/viewtopic.php?t=1703
> >>>>>>>
> >>>>>>> thanks in advance the hole routine is down below..
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> [code]
> >>>>>>> def extractCsdInstrument (input_File_Name, output_File_Name,
> >>>>>>> instr_number):
> >>>>>>>
> >>>>>>>     "takes an .csd input file and grabs instr_number instrument and
> >>>>>>> creates output_File_Name"
> >>>>>>>     f = open (input_File_Name , 'r')                #opens file passed
> >>>>>>> in to read
> >>>>>>>     f2 = open (output_File_Name, 'w')               #opens file passed
> >>>>>>> in to write
> >>>>>>>     instr_yes = 'false'                             #set flag to false
> >>>>>>>
> >>>>>>>     for line in f:                                  #for through all
> >>>>>>> the lines
> >>>>>>>       if "instr" in line:                           #look for instr in
> >>>>>>> the file
> >>>>>>>            if instr_yes == 'true':                    #check to see if
> >>>>>>> this ends the instr block
> >>>>>>>                break                                #exit the block
> >>>>>>>
> >>>>>>>            reline = re.line.split('instr', '/d$')     #error probily
> >>>>>>> split instr and /d (decimal number into parts) $ for end of line
> >>>>>>>            number = int(reline[1])                  #convert to a
> >>>>>>> number maybe not important
> >>>>>>>                 if number == instr_number:            #check to see if
> >>>>>>> it is the instr passed to function
> >>>>>>>                 instr_yes = "true":                 #change flag to
> >>>>>>> true because this is the instr we want
> >>>>>>>       if instr_yes = "true":                        #start of code to
> >>>>>>> copy to another file
> >>>>>>>            f2.write(f.line)                         #write line to
> >>>>>>> output file
> >>>>>>>
> >>>>>>>     f.close                                         #close input file
> >>>>>>>     f2.close
> >>>>>>>
> >>>>>>> [/code]
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>> Eric,
> >>>>>>       From your problem description and your code it is unclear what
> >>>>>> exactly it is you want. The task appears to be rather simple, though,
> >>>>>> and if you don't get much useful help I'd say it is because you don't
> >>>>>> explain it very well.
> >>>>>>       I believe we've been through this before and your input data is
> >>>>>> like this
> >>>>>>
> >>>>>>    data = '''
> >>>>>>    <CsoundSynthesizer>;
> >>>>>>      ; test.csd - a Csound structured data file
> >>>>>>
> >>>>>>    <CsOptions>
> >>>>>>      -W -d -o tone.wav
> >>>>>>    </CsOptions>
> >>>>>>
> >>>>>>    <CsVersion>    ;optional section
> >>>>>>      Before 4.10  ;these two statements check for
> >>>>>>      After 4.08   ;   Csound version 4.09
> >>>>>>    </CsVersion>
> >>>>>>
> >>>>>>    <CsInstruments>
> >>>>>>      ; originally tone.orc
> >>>>>>      sr = 44100
> >>>>>>      kr = 4410
> >>>>>>      ksmps = 10
> >>>>>>      nchnls = 1
> >>>>>>      instr   1
> >>>>>>          a1 oscil p4, p5, 1 ; simple oscillator
> >>>>>>             out a1
> >>>>>>        endin
> >>>>>>    </CsInstruments>
> >>>>>>
> >>>>>>    <CsScore>
> >>>>>>      ; originally tone.sco
> >>>>>>      f1 0 8192 10 1
> >>>>>>      i1 0 1 20000 1000 ;play one second of one kHz tone
> >>>>>>      e
> >>>>>>    </CsScore>
> >>>>>>
> >>>>>>    </CsoundSynthesizer>
> >>>>>>
> >>>>>> Question 1: Is this your input?
> >>>>>> if yes:
> >>>>>>     Question 1.1: What do you want to extract from it? In what format?
> >>>>>> if no:
> >>>>>>     Question 1.1: What is your input?
> >>>>>>     Question 1.2: What do you want to extract from it? In what format?
> >>>>>> Question 2: Do you need to generate output file names from the data?
> >>>>>> (One file per instrument?)
> >>>>>> if yes:
> >>>>>>    Question 2.1: What do you want to make your file name from?
> >>>>>> (Instrument number?)
> >>>>>>
> >>>>>>
> >>>>>> Regards
> >>>>>>
> >>>>>> Frederic
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>> I want to pass the file name to the subroutine and return a comment
> >>>>> string if it is there maybe it should be simplier.  I probily should
> >>>>> have the option of grabbing the comment in other related routines.  I
> >>>>> am pretty ambitious with the main program.  I did notice some code in
> >>>>> tcl that would be usefull to the app If I compile it..  I am probily
> >>>>> not ready for that though..
> >>>>>
> >>>>> http://www.dexrow.com
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>> Eric,
> >>>>      I'm beginning to enjoy this. I'm sure we'll sort this out in no
> >>>> time if we proceed methodically. Imagine you are a teacher and I am your
> >>>> student. This is a quiz. I have to take it and you need to explain to me
> >>>> the problem you want me to solve. If you don't explain it clearly, I
> >>>> will not know what I have to do and cannot do the quiz. If you answer my
> >>>> questions above, your description of the problem will be clear and I can
> >>>> take the quiz. Okay?
> >>>>
> >>>> Frederic
> >>>>
> >>>>
> >>> instr   1
> >>>          a1 oscil p4, p5, 1 ; simple oscillator    ; comment is
> >>> sometimes here
> >>>             out a1
> >>>        endin
> >>>
> >>>
> >>> I need to know the file I wan't to grab this from I need to grab this
> >>> out of the larger file and put it into it's own file,  I need to know
> >>> what instr the user wants.  I need to know what file to put it into and
> >>> it would be usefull to have the comment line returned (if any).
> >>>
> >>> I did just get python essential reference 3rd edition..  If there is a
> >>> better reference on just the subject I am after I would be glad to grab
> >>> it when I get cash again.
> >>>
> >>>
> >>>
> >> Eric,
> >>
> >>    Tell us the story. Are you a student? A musician? What are you doing
> >> with these files? Where do you get them from? What for?
> >>
> >> Frederic
> >>
> >
> >
> Eric,
>       I found an excellent CSound doc at:
> ems.music.utexas.edu/program/mus329j/CSPrimer.pdf. I am myself
> interested in music and will definitely look into this more closely.
>       For the time being I get the impression that you are dealing with
> CSound instrument definition files which you can buy cheaply in great
> quantity but unfortunately are illegibly formatted. If this is so, what
> you would need is a formatter. I found references to CSound editors
> (e.g. http://flavio.tordini.org/csound-editor/). Those should be capable
> of formatting.
>       Writing your own formatter shouldn't be all that hard. Here's a
> quick try:
>
>
> def csound_formatter (in_file, out_file_file = sys.stdout):
>
>    INDENT      = 10
>    CODE_LENGTH = 50
>
>    for l in in_file:
>       line = l.strip ()
>       if line == '':
>          out_file.write ('\n')
>       else:
>          if line [0] == ';':       # Comment line
>             out_file.write ('%s\n' % line)
>          else:
>             code = comment = ''
>             if line [-1] == ':':   # Label
>                out_file.write ('%s\n' % line)
>             else:
>                if ';' in line:
>                   code, comment = line.split (';')
>                   out_file.write ('%*s%-*s;%s\n' % (INDENT, '',
> CODE_LENGTH, code, comment))
>                else:
>                   out_file.write ('%*s%s\n' % (INDENT, '', line))
>
>
> And here is a section of a csound file with white space squeezed out as
> would make the file smaller:
>
>  >>> csound = StringIO.StringIO ('''; Basic FM Instrument with Variable
> Vibrato
> ; p4=amp p5=pch(fund) p6=vibdel p7=vibrate p8=vibwth
> ; p9=rise p10=decay p11=max index p12=car fac p13=modfac
> ; p14=index rise p15=index decay p16=left channel factor p17=original p3
>
> instr 9,10,11,12
> ;--------------------------------------------------------------------------------
> ;initialization block:
> kpitch init cpspch (p5)
> itempo = p3/p17 ;ratio seconds/beats
> idelay = p6 * itempo ;convert beats to secs
> irise = p9 * itempo
> idecay = p10 * itempo
> indxris = (p14 == 0 ? irise : p14 * itempo)
> indxdec = (p15 == 0 ? idecay : p15 * itempo)
> if (p16 != 0) igoto panning ;if a panfac, use it, else
> ilfac = .707 ;default is mono (sqrt(.5))
> irfac = .707
> igoto perform
> panning:
> ilfac = sqrt(p16)
> irfac = sqrt(1-p16)
> ;--------------------------------------------------------------------------------
> ;performance block:
> perform:
> if (p7 == 0 || p8 == 0) goto continue
> kontrol oscil1 idelay,1,.5,2 ;vib control
> kvib oscili p8*kontrol,p7*kontrol,1 ;vibrato unit
> kpitch = cpsoct(octpch(p5)+kvib) ;varying fund pitch in hz
> continue:
> kamp linen p4,irise,p3,idecay
> kindex linen p11,indxris,p3,indxdec
> asig foscili kamp,kpitch,p12,p13,kindex,1 ;p12,p13=carfac,mod fac
> outs asig*ilfac,asig*irfac
> endin
> ''')
>
> Now we run this through the function defined above:
>
>  >>> csound_formatter (s)
>
> ; Basic FM Instrument with Variable Vibrato
> ; p4=amp p5=pch(fund) p6=vibdel p7=vibrate p8=vibwth
> ; p9=rise p10=decay p11=max index p12=car fac p13=modfac
> ; p14=index rise p15=index decay p16=left channel factor p17=original p3
>
>                     instr 9,10,11,12
> ;--------------------------------------------------------------------------------
> ;initialization block:
>                     kpitch init cpspch (p5)
>                     itempo = p3/p17                         ;ratio
> seconds/beats
>                     idelay = p6 * itempo                    ;convert
> beats to secs
>                     irise = p9 * itempo
>                     idecay = p10 * itempo
>                     indxris = (p14 == 0 ? irise : p14 * itempo)
>                     indxdec = (p15 == 0 ? idecay : p15 * itempo)
>                     if (p16 != 0) igoto panning             ;if a
> panfac, use it, else
>                     ilfac = .707                            ;default is
> mono (sqrt(.5))
>                     irfac = .707
>                     igoto perform
> panning:
>                     ilfac = sqrt(p16)
>                     irfac = sqrt(1-p16)
> ;--------------------------------------------------------------------------------
> ;performance block:
> perform:
>                     if (p7 == 0 || p8 == 0) goto continue
>                     kontrol oscil1 idelay,1,.5,2            ;vib control
>                     kvib oscili p8*kontrol,p7*kontrol,1     ;vibrato unit
>                     kpitch = cpsoct(octpch(p5)+kvib)        ;varying
> fund pitch in hz
> continue:
>                     kamp linen p4,irise,p3,idecay
>                     kindex linen p11,indxris,p3,indxdec
>                     asig foscili kamp,kpitch,p12,p13,kindex,1
> ;p12,p13=carfac,mod fac
>                     outs asig*ilfac,asig*irfac
>                     endin
>
>
> It works on a couple of presumptions (e.g. no code following labels). So
> it may not function perfectly but shouldn't be hard to tweak.
>
> Hope this helps
>
> Frederic

I was hoping to add and remove instruments..  although the other should
go into my example file because it will come in handy at some point.
It would also be cool to get a list of instruments along with any
comment line if there is one into a grid but that is two different
functions.

http://www.dexrow.com



From dcrespo at gmail.com  Mon Sep 11 15:01:58 2006
From: dcrespo at gmail.com (Daniel Crespo)
Date: 11 Sep 2006 12:01:58 -0700
Subject: Secure XMLRPC Server / PEM Files
Message-ID: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>

Hello everybody,

I'm trying to implement a secure xmlrpc server with basis on
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496786 recipe.
The thing that I'm concerned about is how can I get/create rapidly the
.pem files (the key and cert).

Any help?

Thanks

Daniel



From franz.steinhaeusler at gmx.at  Sat Sep 16 15:06:55 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhäusler)
Date: Sat, 16 Sep 2006 21:06:55 +0200
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<20060916174324.2237.20755.XPN@orion.homeinvalid>
Message-ID: <q2iog21vr7sfgc2dhjb4jj5ld3nprbnbd4@4ax.com>

On Sat, 16 Sep 2006 17:43:28 GMT, Nemesis <nemesis at nowhere.invalid>
wrote:

>Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:
>
>> Ah, great. I changed, this was not working immediatly.
>> So I remembered, most often you have to restart the App, and so its is
>> working.
>
>Here is working fine.


I am on windows, is there maybe a difference (?).

>
>> Small Notice: There was the warning then: Another Instance is running,
>> I pressed yes.
>
>XPN uses the file xpn.lock to see if there is another istance running,
>if the program is not closed correctly it doesn't remove this file so
>you get the warning.

I see.

>
>>>that's an optimization I've thinking about for a while ... but at the
>>>moment I don't know how to implement it.
>> I see, you have to remember after refreshing the list the position and
>> the state of the folding. I can imagine, this is not trivial.
>
>That's right. You should also remember the open/closed threads ... at
>least the one with the article selected.
>

Anyway, not soo important.

>> I'm sure, I will discover some more useful things about your program!
>> In some cases, it already beats forte agent!
>
>Thank you. Agent is (was) a great software I've been using it for a long
>time.

Cool, we have both an equal starting-point. ;)

>>
>> Some remarks:
>
>> * threads are somtimes not assigned correctly, this means, that
>> one thread is divided into two.
>> I subscribed to wxPyhton mailing list in gmane, and there is:
>> One thread
>> Applications written in wxPyhton
>> and another
>> RE: Applications written in wxPyhton
>
>threading is based on the References header and then on the subject, you
>can have problems with mailing-lists cause mail-agents sometimes do not
>produce the References header but only the In-Reply-To.
>Another problem could be the date, before building the threads XPN
>reorders the articles by date ... but if the date in the article is
>wrong it can confuse the threads.

Aha, I don't understand all the details anyway, in Forte the same
thread was ordered in.


>
>> but this (is) or should be *one* thread.
>
>Yes.
>
>> * the enter key is not working in some dialogs (for example in search)
>> and Esc to cancel the dialog. (or is that a gkt issue?)
>
>It's a focus issue, in the search dialog the focus is set on the entry.
>The Esc key is not binded to any button by default.
>
That would be convenient, pressing "Enter" to perform the awaited 
process and cancel to abandon the dialogue.

>> * the find dialog is sometimes not working
>
>What exactly is not working?

Sorry, I think, I have made an error myself. That means I typed the
search string in "From", where I excpeted to look for headers search.

>
>> * to mark more than one article at one time (to be able to mark
>> multiple articles at one as read, ...)
>
>Yes but selecting more then one article introduces some difficulties I
>preferred to avoid for the moment ;-)

Ok.

If you don't mind, I will make a thorough test :-)
I don't want to bother more than necessary.
I want to make it happen, that XPN will be my "default" Newsreader!!!


Many thanks again for your answers and this wonderful piece of
sofware!


-- 
Franz Steinhaeusler


From meyer at acm.org  Sun Sep 17 08:26:43 2006
From: meyer at acm.org (Andre Meyer)
Date: Sun, 17 Sep 2006 14:26:43 +0200
Subject: Help me use my Dual Core CPU!
In-Reply-To: <624934630609170433i318dbabbx5ce684588b198587@mail.gmail.com>
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
	<mailman.405.1158107055.5279.python-list@python.org>
	<7x4pv753mq.fsf@ruckus.brouhaha.com>
	<624934630609170433i318dbabbx5ce684588b198587@mail.gmail.com>
Message-ID: <7008329d0609170526n3e80bcc9q401d99ebb4f29688@mail.gmail.com>

You may, of course, also have a look at JavaSpaces or TSpaces (both in
Java).

JavaSpaces
http://java.sun.com/docs/books/jini/javaspaces/
http://java.sun.com/developer/technicalArticles/tools/JavaSpaces/index.html
http://www.javaworld.com/jw-11-1999/jw-11-jiniology.html

TSpaces
http://www.almaden.ibm.com/cs/TSpaces/
http://www.alphaworks.ibm.com/tech/tspaces

Or read the original tuple space articles by David Gelernter:
http://en.wikipedia.org/wiki/David_Gelernter
http://portal.acm.org/citation.cfm?id=2433
http://citeseer.ist.psu.edu/14383.html


Tuple spaces are cool ;-)



On 9/17/06, Ramon Diaz-Uriarte <rdiaz02 at gmail.com> wrote:
>
> On 17 Sep 2006 00:55:09 -0700, Paul Rubin
> <"http://phr.cx"@nospam.invalid> wrote:
> > "Ramon Diaz-Uriarte" <rdiaz02 at gmail.com51> writes:
> > > You might also want to check
> > > http://www.lindaspaces.com/products/NWS_overview.html52
> > > by the guys who "invented" Linda.
> >
> > Cool, I guess.
>
>
> I've only played a little bit with it, but it does certainly look
> nice. Nick Carriero (from network spaces) also developed a similar
> thing for R, the GNU S statistical programming language (also from the
> above url), and the demonstration I saw of it was _really_ impressive.
>
>
> > I looked at these.  Oz/Mozart is a whole nother language, worth
> > examining for its ideas, but the implementation is quite slow.
>
> Yes, that is true. On the plus side, though, the "Concepts,
> techniques, and models of computer programming" book, by Van Roy and
> Haridi, uses Oz/Mozart, so you get a thorough, pedagogical, and
> extended ---900 pages--- "tutorial" of it. But the speed and, so far,
> limited ways of being friendly to other languages, can be show
> stoppers.
>
> > Kamaelia doesn't attempt concurrency at all.  Its main idea is to use
> > generators to simulate microthreads.  Candygram is a module that lets
> > you write code in Python that's sort of like Erlang code, but it uses
> > OS threads for the equivalent of Erlang processes.  That misses the
> > point of Erlang pretty badly, which is that processes are extremely
> > lightweight (i.e. normally they are microthreads) so you can have
> > millions of them active simultaneously (e.g. one for each active
> > telephone connected to a big phone switch).
>
> Thanks for the clarification (I had only cursorily looked at them).
>
> >
> > Right now I want to check out GHCI (the Glasgow Haskell compiler),
> > which may be the closest thing to a "winner":
> >
> >   - very advanced language, even higher level than Python, once
> described
> >     by somebody as "what Python should have become"
> >   - native code compilation
> >   - lock-free concurrency using software transactional memory (STM)
>
> Thanks for this. I'll check it out!!
>
> Best,
>
> R.
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Dr. Andre P. Meyer                        http://python.openspace.nl/meyer
TNO Defence, Security and Safety          http://www.tno.nl/
Delft Cooperation on Intelligent Systems  http://www.decis.nl/

Ah, this is obviously some strange usage of the word 'safe' that I wasn't
previously aware of. - Douglas Adams
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From MonkeeSage at gmail.com  Thu Sep 21 09:33:24 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 21 Sep 2006 06:33:24 -0700
Subject: Can I inherit member variables?
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<eetnu9$gj7$1@online.de>
	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>
	<mailman.400.1158835802.10491.python-list@python.org>
	<45128244$0$641$636a55ce@news.free.fr>
	<mailman.407.1158843029.10491.python-list@python.org>
Message-ID: <1158845604.690965.29220@m73g2000cwd.googlegroups.com>

Ps. Aristotle can rest easy tonight:

class mortal(object): pass
class man(mortal): pass
Socrates = man()
all_men  = mortal()
if Socrates == all_men:
  print "Socrates == all_man"
else:
  print "Undistributed Middle is indeed a fallacy"

;)

Regards,
Jordan



From ptmcg at austin.rr._bogus_.com  Mon Sep  4 11:40:30 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 04 Sep 2006 15:40:30 GMT
Subject: are there any lib for receive hotmail  ?
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>
Message-ID: <ONXKg.8550$o42.6314@tornado.texas.rr.com>

"????" <guotie.9 at gmail.com> wrote in message 
news:1157374039.234282.238570 at m79g2000cwm.googlegroups.com...
> thanks.
>

poplib 




From ldo at geek-central.gen.new_zealand  Thu Sep 28 20:16:54 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 12:16:54 +1200
Subject: startswith() and endswith() for re's would be more intuitive
References: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>
	<451bdc57$0$20520$626a54ce@news.free.fr>
	<1159479137.991732.135620@k70g2000cwa.googlegroups.com>
Message-ID: <efhojr$hpb$2@lust.ihug.co.nz>

In message <1159479137.991732.135620 at k70g2000cwa.googlegroups.com>, metaperl
wrote:

> There is also nothing wrong with
> 
> re.match('blah', somestring)
> 
> but it does read as well as
> 
> re.atstartof('blah', something)
> 
> and the counterpart for EOS is not there.

The only reason for those special cases for simple string matching is
precisely because string matching is so simple and so limited. Whereas
regular expressions give you so much more power--you can match at the
start, at the end, somewhere in the middle, 3 characters from the end, and
myriads of other possibilities. All of these can be succinctly expressed in
the RE notation itself, so there's no need for lots of special-case calls.


From fredrik at pythonware.com  Tue Sep 26 09:08:47 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 15:08:47 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org><4517e10e$0$13929$edfadb0f@dread15.news.tele.dk><mailman.570.1159194107.10491.python-list@python.org>
	<efa7ff$pr2$2@lust.ihug.co.nz>
Message-ID: <efb8ov$7mb$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

>> (cgi.escape(s, True) is slower than cgi.escape(s), for reasons that are
>> obvious for anyone who's looked at the code).
>
> What you're doing is adding to the reasons why the existing cgi.escape
> function is stupidly designed and implemented. The True case is by far the
> most common

really?  most HTML attributes cannot even contain things that would need to
be escaped, while *all* element content needs escaping.  and the web contains
a lot of element content, as should be obvious to anyone who's been there...

</F> 





From __peter__ at web.de  Mon Sep 11 15:11:21 2006
From: __peter__ at web.de (Peter Otten)
Date: Mon, 11 Sep 2006 21:11:21 +0200
Subject: Problems with email.Generator.Generator
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>
	<ee40io$hno$1@sea.gmane.org>
	<mailman.281.1158000940.5279.python-list@python.org>
Message-ID: <ee4cam$g9a$03$1@news.t-online.com>

Chris Withers wrote:

> At worst, and most likely based on my past experience of (c)StringIO
> being used to accumulate output, it won't make a jot of difference...

What past experience?

>>> StringIO.StringIO().write(unichr(128))
>>> cStringIO.StringIO().write(unichr(128))
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
UnicodeEncodeError: 'ascii' codec can't encode character u'\x80' in position
0: ordinal not in range(128)

Peter


From ldo at geek-central.gen.new_zealand  Mon Sep 25 05:40:30 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 21:40:30 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
Message-ID: <ef884j$82r$1@lust.ihug.co.nz>

In message <Xns98496B28F5FBFduncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:
> 
>> Ok, should have tested it better. This works fine on my machine,
>> though:
>> 
>> curs.execute(
>>     "select * from details where person_name like ?",
>>     ('%' + name + '%', )
>> )
>> 
>> Including all sorts of quotes, newlines, backslashes etc. in the name.
>> 
> I think his point was that any '%' characters inside name act like
> wildcards whereas his version looked for literal percents.
> 
> This could be an argument for having a utility function to escape the
> wildcards for this sort of situation, but certainly not an argument for
> his proposed QuoteSQL.

Why not? That is exactly one of the options my QuoteSQL offers.


From gnemesis2001 at gmail.com  Fri Sep 15 09:11:12 2006
From: gnemesis2001 at gmail.com (Nemesis)
Date: 15 Sep 2006 06:11:12 -0700
Subject: XPN 0.6.5 released
In-Reply-To: <qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
Message-ID: <1158325872.846004.66150@k70g2000cwa.googlegroups.com>

Franz Steinhaeusler wrote:
> A few other notes (or should I post into the feature requests on
> sourceforge?)

To be honest I do not check sourceforge forums very often. If you want
you can also send me an email (the email is written in the readme
file).

> little point: I find it superfluos on the header pane, to always have
> the term "Re:" before (it would probaly easier to read without this
> text).

Maybe that's true ... but I tend not to modify the informations I show,
I like not to elaborate to much the articles.

> an option possibly (as in agent): if you click on the tree the "+" sign,
> it would be more convenient (for me) to open *all* subbranches, this
> means show all responses headers for this thread.

I should change the behaviour of the expander and that's not a correct
way of acting.
You can expand the whole thread with the command "Expand Selected
Subthread" in the "Subscribed Groups" menu (or on the Toolbar). If you
want you can associate a shortcut to this function ... there is also a
standard GTK shortcut for this function SHIFT+CTRL+NUMPAD_PLUS
where NUMPAD_PLUS is the plus key on the numpad.

> if you change the groups, it would be nice to remember the position of
> the last readed thread in the header pane, which means changing forth
> and back to a certain group (as option for example).

that's an optimization I've thinking about for a while ... but at the
moment I don't know how to implement it.



From steve at holdenweb.com  Wed Sep 20 12:15:42 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 12:15:42 -0400
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158767379.579861.91080@k70g2000cwa.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158767379.579861.91080@k70g2000cwa.googlegroups.com>
Message-ID: <eerpdu$veb$1@sea.gmane.org>

Michele Simionato wrote:
> (I don't believe I am responding to a notorious troll ...)
> 
Believe it. You are. Ain't life a bitch? :-)

> One (bad) solution is to write in your sitecustomize.py the following:
> 
> $ echo /usr/lib/python/sitecustomize.py
> import __builtin__
> 
> class Object(object):
>     def debug(self):
>         print 'some debug info'
> 
> __builtin__.object = Object
> 
> then you can do for instance
> 
> 
>>>>class C(object): pass
>>>>C().debug()
> 
> some debug info
> 
> All class inheriting from object will have the additional debug method.

But sadly not the built-in types like int and str, which is what our 
trollish friend wants to do (for some reason best known to himself).

> However I DO NOT
> RECOMMEND THIS SOLUTION FOR ANY SERIOUS WORK. For instance, it broke my
> IPython installation and I am pretty sure it will broke other things
> too.
> But it may work for debugging purposes, if not for production use, so I
> thought it was worth
> posting.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Thu Sep 28 19:32:38 2006
From: sjmachin at lexicon.net (John Machin)
Date: 28 Sep 2006 16:32:38 -0700
Subject: best way to get data into a new instance?
In-Reply-To: <4o25j2Fchq17U1@uni-berlin.de>
References: <j%QSg.44$1n3.417@news.tufts.edu><4o25j2Fchq17U1@uni-berlin.de>
Message-ID: <1159486358.171069.44090@i42g2000cwa.googlegroups.com>


Diez B. Roggisch wrote:

>
> The programmer is responsible for the construction of new instances (or
> at least the code which will do that), and a constructor should contain
> parameters for at least the values you absolutely expect to be there -
> for example name and age or something like that in your example.

Age? Absolutely expect?? Call me crazy, but I'd record the primary
information (date of birth), *if* available, and derive age on the fly
if possible if and only if needed.



From tenax.raccoon at gmail.com  Mon Sep  4 11:16:24 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 4 Sep 2006 08:16:24 -0700
Subject: Python newbie with a problem writing files
References: <200693205740.885292@JJ-Tosh>
	<mailman.10322.1157332184.27775.python-list@python.org>
Message-ID: <1157382984.377081.263690@p79g2000cwp.googlegroups.com>

limodou wrote:
> > Code:
> >
> > import feedparser
> > from xml.sax import saxutils
> >
> > feed_number=200
> >
> > feed_list = open("feed_listing.conf","r")
> > for each_feed in feed_list:
> >     data=feedparser.parse(each_feed)
> >     feed_title=data.entries[0].title
> >     xml_output=open("xml_data\\feed" + str(feed_number) + ".xml", "w")
>
> Maybe there is a extra '=', if it should be:
>
> xml_output.write(feed_title)
>
> ?
>

It took me a few moments to parse what limodou wrote here, but he's
absolutely correct.  Your problem is that you are trying to reassign
the write method in your file.  File objects are built-in types, and do
not allow their methods to be calvaliery replaced.

Here's an example on the correct way (and your way) of writing to a
file:
>>> f = open('spam.xml', 'w')
>>> f.write( 'This data is written to the file' )
>>> f.write = ("This is not a valid Python syntax")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: 'file' object attribute 'write' is read-only
>>>

You'll notice that the AttributeError describes exactly what's wrong in
this case.  The write method on your file attribute is read-only.  It
doesn't say anything about whether your file is read-only.

If you really, really want to change the write method into a string,
you can subclass from the file class:

>>> class MyFileType(file):
...     pass
...
>>> myfile = MyFileType('spam_and_eggs.xml', 'w')
>>> myfile.write
<built-in method write of MyFileType object at 0x00870B88>
>>> myfile.write = "Gonna replace write method with this string!"
>>> myfile.write
'Gonna replace write method with this string!'
>>>

Of course, you can no longer easily access the original write method
after re-assigning it like that.

(limodou, I thought this might need a little bit of extra explanation
for the original poster.  I apologize if I seem rude here.)

    --Jason



From cptnwillard at gmail.com  Mon Sep 11 13:34:34 2006
From: cptnwillard at gmail.com (cptnwillard at gmail.com)
Date: 11 Sep 2006 10:34:34 -0700
Subject: access violation with C API
Message-ID: <1157996073.905357.240400@i3g2000cwc.googlegroups.com>

Hello all,

The following triggers an "access violation" error, why?

		pPyType = (PyTypeObject*)malloc(sizeof(PyTypeObject));
		memset(pPyType, 0, sizeof(PyTypeObject));
		pPyType->ob_refcnt    = 1;
		pPyType->tp_name      = "noname";
		pPyType->tp_basicsize = sizeof(MyObject);
		pPyType->tp_flags     = Py_TPFLAGS_DEFAULT;
		pPyType->tp_doc       = "nodoc";
		PyType_Ready(pPyType);

Thanks.



From michele.simionato at gmail.com  Thu Sep 28 03:08:34 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 28 Sep 2006 00:08:34 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <mailman.832.1159383775.10491.python-list@python.org>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<mailman.832.1159383775.10491.python-list@python.org>
Message-ID: <1159427314.666653.316350@i42g2000cwa.googlegroups.com>

John J. Lee wrote:
> ISTM that there's a vast amount of mostly-tacit knowledge about the
> way things work, and they way they should work, good practices, design
> techniques, rules of thumb, Bad Ideas ;-), etc. etc. that good
> programmers do have and bad or inexperienced programmers don't.

Yep, I think that's the point. Worth repeating (and +1 for QOTW).

  Michele Simionato



From claudio.grondi at freenet.de  Sun Sep  3 07:33:39 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Sun, 03 Sep 2006 13:33:39 +0200
Subject: OO on python real life tutorial?
In-Reply-To: <1157241169.675904.204630@b28g2000cwb.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
	<edaf0s$oc3$1@newsreader2.netcologne.de>
	<1157241169.675904.204630@b28g2000cwb.googlegroups.com>
Message-ID: <edeeie$8ha$1@newsreader2.netcologne.de>

Patrick Thomson wrote:
>>I personally don't like wxPython because the way it works is very
>>counter intuitive for me and appear to me somehow non-Pythonic
> 
> 
> While Claudio has a point (wxPython is a C++ library at heart), I
> believe that wxPython is the best solution for Python GUI's out there.
> TK may be a lot easier, but with a little practice wxPython becomes
> very clear, and the skills you learn therein will be applicable to
> almost any other GUI toolkit out there (Swing and SWT were far, far
> easier to learn thanks to my wxPython experience.) After all, GvR said
> that "wxPython is the best and most mature cross-platform GUI toolkit,
> given a number of constraints. The only reason wxPython isn't the
> standard Python GUI toolkit is that Tkinter was there first."
> 
> The Wax toolkit (http://zephyrfalcon.org/labs/wax.html) attempts to
> solve the problems inherent with wxPython and make it more pythonic.
> I've never used it, so I don't know if it succeeds.
> 
> 
>>wxPython is like programming in Microsoft Visual Basic or Visual C++ :
>>some love it, some don't.
> 
> 
> Though that is true, I don't think that the analogy holds up at all.
> The power of wxPython lies in its attractiveness across all platforms
> and the freedom that it gives you; VB and VC++ lock you in what
> Microsoft want you to do. (To be fair, that isn't a Bad Thing by
> definition.)
> 
> 
>>>I want to switch to wxpython because I don't like Tk too much. It is
>>>difficult sometimes to have full control of the widgets (i.e. focus
>>>sequence). Why do you think wxwidget is not suitable for low-medium
>>>size projects? Could you give me some practical examples of this?
> 
> 
> I respectfully disagree with Grondi's opinions; a list of notable
> wxPython projects (http://wiki.wxpython.org/index.cgi/wxPythonPit_Apps)
> showcases projects both small and expansive.
What I can't understand here is, with which of my opinions you disagree 
as one line below of my posting (you are responding to) I write: "I 
haven't said, that it is not suitable [for low-medium
size projects]." ...

By the way: why is it so hard to develop a wxPython application which 
runs with any wxPython version? Are the subsequent wxPython versions by 
definition not compatible or do only the quirks change from release to 
release being shifted between the problem zones?

Claudio Grondi


From bearophileHUGS at lycos.com  Fri Sep  8 11:55:50 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 Sep 2006 08:55:50 -0700
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
Message-ID: <1157730950.855945.245910@d34g2000cwd.googlegroups.com>

vbfoobar at gmail.com:
> I am looking for python code that takes as input a list of strings
> (most similar,
> but not necessarily, and rather short: say not longer than 50 chars)
> and that computes and outputs the python regular expression that
> matches
> these string values (not necessarily strictly, perhaps the code is able
> to determine patterns, i.e. families of strings...).

This may be a very simple starting point:

>>> import re
>>> strings = ["foo", "bar", "$spam"]
>>> strings2 = "|".join(re.escape(s) for s in strings)
>>> strings2
'foo|bar|\\$spam'
>>> finds = re.compile(strings2)

But I don't know how well this may work with many longer strings.
If that's not enoug we can think about more complex solutions.

Bye,
bearophile



From skip at pobox.com  Thu Sep  7 23:00:52 2006
From: skip at pobox.com (skip at pobox.com)
Date: Thu, 7 Sep 2006 22:00:52 -0500
Subject: IronPython on Mono howto
In-Reply-To: <1157681970.481777.256230@d34g2000cwd.googlegroups.com>
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
	<mailman.122.1157636133.5279.python-list@python.org>
	<1157681970.481777.256230@d34g2000cwd.googlegroups.com>
Message-ID: <17664.56548.498913.297065@montanaro.dyndns.org>


    >> One thing I did find especially annoying though was that none of the
    >> editing keys worked.

    Seo> It is a known problem. It is a Mono bug. (ncurses-based colored
    Seo> console is not really complete.) There is a workaround.

Thanks, it worked perfectly.  I guess the white text on the white background
prevented the Mono developers from seeing that the editing characters were
self inserting. ;-)

Skip


From steve at holdenweb.com  Fri Sep 15 13:55:11 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 15 Sep 2006 13:55:11 -0400
Subject: Pre-defining an action to take when an expected error occurs
In-Reply-To: <1158303569.603466.36130@e3g2000cwe.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
	<1158303569.603466.36130@e3g2000cwe.googlegroups.com>
Message-ID: <eeepck$4l4$2@sea.gmane.org>

John Machin wrote:
[...]
> 
> [1] There's a possibility that the package's author reads this
> newsgroup, and I've heard tell that he's a cranky old so-and-so; you
> wouldn't want him to take umbrage, would you?
> 
Cranks doesn't even *begin* to describe it ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From martin at v.loewis.de  Fri Sep 22 16:31:22 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 22 Sep 2006 22:31:22 +0200
Subject: no-installation version of python
In-Reply-To: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
References: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
Message-ID: <4514481A.8090508@v.loewis.de>

mr.porteiro.head at gmail.com schrieb:
> Is there a stand-alone version of python out there that I can package
> with my scripts so that I don't have to bother with something like
> py2exe?

Yes, google for "movable Python".

Regards,
Martin


From deets at nospam.web.de  Wed Sep 13 09:28:23 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 13 Sep 2006 15:28:23 +0200
Subject: socket question
References: <TzTNg.138371$LF4.101169@dukeread05>
Message-ID: <4mqfbnF71d8cU1@uni-berlin.de>

hg wrote:

> Hi,
> 
> I am not sure whether this is a python-related question.
> 
> If I have device A than sends XX bytes to device B, and device B does a
> recv(XX) using the default timeout, what could make device B wake-up
> with less than XX bytes received ?

There exist higher abstractions for sockets in python for IPC - are you sure
you want to reinvent the wheel?

If you absolutely must: the select-call allows for specification of a
timeout. Use it with the socket file-descriptor.

Diez


From oliphant.travis at ieee.org  Fri Sep 29 16:11:57 2006
From: oliphant.travis at ieee.org (Travis Oliphant)
Date: Fri, 29 Sep 2006 14:11:57 -0600
Subject: iterator question
In-Reply-To: <efbmpp$3bn$1@sea.gmane.org>
References: <efbmpp$3bn$1@sea.gmane.org>
Message-ID: <451D7E0D.9080803@ieee.org>

Neal Becker wrote:
> Any suggestions for transforming the sequence:
> 
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
> 
> into a succession of tuples:
> 
> [(1, 2), (3, 4)...]
> 
> In other words, given a seq and an integer that specifies the size of tuple
> to return, then for example:
> 
> seq = [a,b,c,d,e,f]
> for e in transform (seq, 2):
>   print e
> 
> would return
> (a,b)
> (c,d)
> (e,f)
> 

Well, if you have NumPy installed, then this is pretty easy to do by 
reshaping the 1-d array into a 2-d array:

import numpy as N

def transform(seq, num):
     a = N.array(seq)
     a.shape = (-1, num)
     return a

This would return a sequence object that would print using lists

If you really insisted on tuples, then you could either convert the 
elements by replacing the last line with

return [tuple(x) for x in a]

or use a "record-array":

import numpy as N

def transform(seq, num):
     a = N.asarray(seq)
     dt = a.dtype
     newdt = [('',dt)]*num
     return a.view(newdt).tolist()

This would return a list of tuples as requested.

-Travis





From willie at jamots.com  Wed Sep 20 03:22:23 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 02:22:23 -0500
Subject: byte count unicode string
Message-ID: <4510EC2F.2050105@jamots.com>

Marc 'BlackJack' Rintsch:

 >In <mailman.313.1158732191.10491.python-l... at python.org>, willie wrote:
 >> # What's the correct way to get the
 >> # byte count of a unicode (UTF-8) string?
 >> # I couldn't find a builtin method
 >> # and the following is memory inefficient.

 >> ustr = "example\xC2\x9D".decode('UTF-8')

 >> num_chars = len(ustr)    # 8

 >> buf = ustr.encode('UTF-8')

 >> num_bytes = len(buf)     # 9

 >That is the correct way.


# Apologies if I'm being dense, but it seems
# unusual that I'd have to make a copy of a
# unicode string, converting it into a byte
# string, before I can determine the size (in bytes)
# of the unicode string. Can someone provide the rational
# for that or correct my misunderstanding?

# Thanks.


From ptmcg at austin.rr._bogus_.com  Mon Sep 18 16:56:55 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 18 Sep 2006 20:56:55 GMT
Subject: newbie division question
References: <YMBPg.3328$uj3.1736@trnddc08>
	<1158608090.645965.49970@m7g2000cwm.googlegroups.com>
	<MPCPg.3327$W13.2538@trnddc05>
	<1158612024.373016.253610@k70g2000cwa.googlegroups.com>
Message-ID: <rKDPg.5016$vD2.4306@tornado.texas.rr.com>

<casevh at comcast.net> wrote in message 
news:1158612024.373016.253610 at k70g2000cwa.googlegroups.com...
>
>> PS Any news on when true division will be the default?
>
> Python 3.0 (aka P3K). It is the release that can break backwards
> compatibility.
>
> http://www.python.org/dev/peps/pep-3000/
>
> casevh
>

Yes, Break Backwards Compatibility is a Level 60 spell, reserved for Night 
Elf mages.

-- Paul




From gepisolo at libero.it  Thu Sep  7 11:00:24 2006
From: gepisolo at libero.it (Gepi Solo)
Date: 7 Sep 2006 17:00:24 +0200
Subject: PyGTK - Rollover Buttons
Message-ID: <7c6ec9531fa08c8a0b63f96cb36@news.x-privat.org>

Hi, I'm a python newbie, coming from PHP & Perl. I'm developing client-server 
applications with a GUI. I'm trying to realize rollover buttons with images 
as background. I mean... I want to create a class which permit to create 
buttons with various shapes, (for instance something like this: O====O with 
a label and an image in the central part), that change their color/shapes 
when they have the focus on.
I split the image of the shape into 3 parts: left, center (which have to 
resize with the label in the button) and right.
I thought to Create an  EventBox (with the callback function connected to 
it).
Inside this EventBox I'd put a HBox with 3 elements: left image, another 
EventBox in the center, and the right image.
The EventBox in the center should have the central part of the shape-image 
as background and the Label of the button (and evenually an icon).

Am I right?? I don't know if it's the right way... I didn't find anything 
on this topic on Google. Anyway if it's the right way... I don't know how:
1. To put the central image as background in the inner EventBox(does the 
background image behave like in html tables where it repeats itself until 
it fill all the available space?)
2. To change all the images to realize the rollover effect
3. Trying to add an EventBox to the main window I noticed that it's grey 
and it covers the background image of the window. If I realize the button 
using the EventBox I'd like to see the window background image outside the 
shape of the button... (I don't know if it's clear... :) ) 

thanx in advance.
G.




From deets at nospam.web.de  Mon Sep  4 10:07:52 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 04 Sep 2006 16:07:52 +0200
Subject: Unicode characters
References: <579of2dotq4rjh60a4jkloohdkokni2eac@4ax.com>
Message-ID: <4m2qa2F45ijkU1@uni-berlin.de>

Paul Johnston wrote:

> Hi
> I have a string which I convert into a list then read through it
> printing its glyph and numeric representation
> 
> #-*- coding: utf-8 -*-
> 
> thestring = "abcd"
> thelist = list(thestring)
> 
> for c in thelist:
>      print c,
>      print ord(c)
> 
> Works fine for latin characters but when I put in a unicode character
> a two byte character gives me two characters. For example an arabic
> alef returns
> 
> *  216
> * 167
> 
> ( the first asterix is the empty set symbol the second a double "s")
> 
> Putting in sequential characters i.e. alef, beh, teh mabuta, gives me
> sequential listings i.e.
> 216  167
> 216  168
> 216  169
> So it is reading the correct details.
> 
> 
> Is there anyway to get the c in the for loop to recognise it is
> reading a multiple byte character.
> I have followed the info in PEP 0263 and am using Python 2.4.3 Build
> 12 on a Windows box  within Eclipse 3.2.0 and Python plugins 1.2.2

Use unicode objects instead of byte strings. The above string literal is
_not_ affected by the coding:-header whatsoever.

That applies only to 

u"some text"

literals, and makes them a unicode object.

The normal string literals are just bytes - because of your encoding being
properly set in the editor, an entered multibyte-character is stored as
such.

In a nutshell: try the above using u"abcd".
Diez


From sebastien.thur at laposte.net  Thu Sep  7 07:40:10 2006
From: sebastien.thur at laposte.net (seb)
Date: 7 Sep 2006 04:40:10 -0700
Subject: getting quick arp request
In-Reply-To: <mailman.116.1157625350.5279.python-list@python.org>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>
	<1157565629.691753.115910@e3g2000cwe.googlegroups.com>
	<mailman.114.1157623864.5279.python-list@python.org>
	<edorvq$nv2$1@south.jnrs.ja.net>
	<mailman.116.1157625350.5279.python-list@python.org>
Message-ID: <1157629209.994088.152670@i42g2000cwa.googlegroups.com>

Thank you all for the reply,

**************
More tests :
***************

1) I tried to input the D-word with the parameters and I did not see
anychanged (checked with process explorer. The limit of the
simultaneous connexion is always 10.

2)
I have applied the patch from
http://www.lvllord.de/?lang=en&url=downloads .
I could see that this improved the simultaneous sockets up to roughly
50.
This is enough for me.

3)
Since during the scan the first protocol used (and packet capteures) is
using the arp protocol, the subject may be indeed a misnomer.

************
Question :
*************
1)
I am not fully confident to apply the patch from
http://www.lvllord.de/?lang=en&url=downloads .on computers other than
mine.
Is there another solution ?

2)
Still without the above patch on windows, the software "angry ip scan"
for example managed to output a lot of more socket connection. How is
it possible ?

Regards.
Sebastien.

Steve Holden wrote:
> Richard Brodie wrote:
> > "Steve Holden" <steve at holdenweb.com> wrote in message
> > news:mailman.114.1157623864.5279.python-list at python.org...
> >
> >
> >>Is it relevant to point out that the ARP protocol is a connectionless network-layer
> >>protocol.
> >
> >
> > Not really, since the program uses normal TCP socket connections.
> > The feature is working exactly as designed - to slow down TCP scans.
> > The arp requests are just a consequence of the TCP scan.
> >
> >
> Ah. Right. Now you mention that (and force me to read the code :-) I see
> it's a horizontal scan of the FTP service port, and the subject line is
> really a misnomer. Thanks.
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden



From cjw at sympatico.ca  Sat Sep  2 19:33:36 2006
From: cjw at sympatico.ca (Colin J. Williams)
Date: Sat, 02 Sep 2006 19:33:36 -0400
Subject: Program to backtrack function calls in source code?
In-Reply-To: <edcthh$h05$1@news-int2.gatech.edu>
References: <1157230401.389698.234300@b28g2000cwb.googlegroups.com>
	<edcthh$h05$1@news-int2.gatech.edu>
Message-ID: <edd4co$63u$1@sea.gmane.org>

Yu-Xi Lim wrote:
> forum at anton.e4ward.com wrote:
>> many mistakes in programming arise when one changes the code and
>> forgets to adjustment somewhere where it is used. Is there a program
>> that can extract all place in the source code where a variable is
>> accessed or a function called?
>> For example in the simplest case I want to change the name of a
>> function everywhere in the source...
> 
> The process you describe (renaming a function or variable) is part of 
> refactoring. Many good IDEs provide extensive automated support for 
> this, though this functionality seems less common in Python IDEs, likely 
> due to Python's duck typing.
> 
> Bicycle Repair Man supports the ability to rename functions and 
> variables at multiple locations, along with other common refactoring 
> operations. Various Python IDEs and editors can be configured to use 
> BRM. I personally prefer Eclipse, a Java-based IDE but with good Python 
> support via PyDev.

PyScripter, which is Windows based,  provides the ability to link back 
to the definition of some identifier or to get function references. 
http://mail.python.org/pipermail/python-announce-list/2006-March/004782.html

Colin W.



From vatamane at gmail.com  Tue Sep 26 05:06:14 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 26 Sep 2006 02:06:14 -0700
Subject: Logfile analysing with pyparsing
References: <efadbv$gq7$1@online.de>
Message-ID: <1159261574.736885.169820@d34g2000cwd.googlegroups.com>

You can parse it just once, you just have to setup your data structure
(the structure of your XML schema) and fill it up as you parse.

For example, you can represent you data structure as a dictionaries in
Python:

message={
     MID : {
                   ' timestamp' : TIMESTAMP,
                   'from':FROM,
                   'tolist':[TO1, TO2, ... ],
                   'qids': [QID1, QID2, ...],
                   'spam_score':S_SCORE,
                   'spam_filtered':Y/N,
                   'spam_sentdo':S_SENDTO,
              }
}


Note: I inferred this from your XML.

Then as you parse each record(line?)  identify what token is what and
fill in the corresponding data structure. So if you pass by a line that
has the message_id, queue_id and a send_to fields, check if the
corresponding message_id dictionary has been created (if not do so) and
fill in what you just found out. Later on you might see another record
that will help you fill in other information regarding this particular
message_id (such as a 'timestamp' or a 'from' field).

Then translating the data into XML should be fairly easy.

Note: I am not familiar with the syntax of the mail log so I presented
a general idea only. My assumptions about the syntax might have been
wrong.

Hope this helps,

Nick Vatamaniuc




Andi Clemens wrote:
> Hi,
>
> we had some problems in the last weeks with our mailserver.
> Some messages were not delivered and we wanted to know why.
> But looking through the logfile is a time consuming process.
> So I wanted to write a parser to analyse the logs and parse them as XML.
>
> But I have never written a parser before and know I'm sitting in front
> of the logfile trying to write the grammar for pyparsing.
>
> First of all I need to know if it is possible to parse that kind of info
> into XML.
> Here is an excerpt of the logfile lines I'm interested in:
>
> Sep 18 04:15:22 mailrelay postfix/cleanup[12103]: 755387301:
> message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
> Sep 18 04:15:22 mailrelay spamd[1364]: spamd: processing message
> <200609180214.k8I2EuNo016264 at mforward2.dtag.de> for nobody:65534
> Sep 18 04:15:25 mailrelay spamd[1364]: spamd: result: Y 15 -
> BAYES_99,DATE_IN_PAST_03_06,DNS_FROM_RFC_ABUSE,DNS_FROM_RFC_DSN,DNS_FROM_RFC_POST,DNS_FROM_RFC_WHOIS,FORGED_MUA_OUTLOOK,SPF_SOFTFAIL
> scantime=3.1,size=8086,user=nobody,uid=65534,required_score=5.0,rhost=localhost,raddr=127.0.0.1,rport=55277,mid=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>,bayes=1,autolearn=no
>
> Sep 18 04:15:25 mailrelay postfix/cleanup[12074]: DA1431965E:
> message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
> Sep 18 04:15:26 mailrelay postfix/cleanup[13057]: EF90720AD:
> message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
> Sep 18 04:15:26 mailrelay postfix/smtp[10879]: EF90720AD:
> to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=10.49.0.7[10.49.0.7],
> delay=1, status=sent (250 2.6.0
> <200609180214.k8I2EuNo016264 at mforward2.dtag.de> Queued mail for delivery)
>
> They are filtered by "message-id", so all these lines above have
> something to do with the message
> "200609180214.k8I2EuNo016264 at mforward2.dtag.de".
>
> The original logfile is about 25 MB big, so I can't post all of the
> lines of course ;-)
>
> Looking at these lines I realized that there are "Queue IDs":
> 755387301
> DA1431965E
> EF90720AD
>
> Filtering the log for these IDs results in the following lines:
>
> Sep 18 02:15:11 mailrelay postfix/smtpd[10841]: 755387301:
> client=unknown[194.25.242.123]
> Sep 18 04:15:22 mailrelay postfix/cleanup[12103]: 755387301:
> message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
> Sep 18 04:15:22 mailrelay postfix/qmgr[11082]: 755387301:
> from=<sender at mail.net.mx>, size=8152, nrcpt=7 (queue active)
> Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301:
> to=<receiver1 at mail.com>, relay=procmail, delay=14, status=sent (filter)
> Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301:
> to=<receiver2 at mail.com>, relay=procmail, delay=14, status=sent (filter)
> Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301:
> to=<receiver3 at mail.com>, relay=procmail, delay=14, status=sent (filter)
> Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301:
> to=<receiver4 at mail.com>, relay=procmail, delay=14, status=sent (filter)
> Sep 18 04:15:25 mailrelay postfix/qmgr[11082]: 755387301: removed
>
> Sep 18 04:15:25 mailrelay postfix/pickup[13175]: DA1431965E: uid=65534
> from=<nobody>
> Sep 18 04:15:25 mailrelay postfix/cleanup[12074]: DA1431965E:
> message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
> Sep 18 04:15:25 mailrelay postfix/qmgr[11082]: DA1431965E:
> from=<nobody at OUR-MAILSERVER.mail.com>, size=11074, nrcpt=1 (queue active)
> Sep 18 04:15:26 mailrelay postfix/smtp[11703]: DA1431965E:
> to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=localhost[127.0.0.1],
> delay=1, status=sent (250 Ok: queued as EF90720AD)
> Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: DA1431965E: removed
>
> Sep 18 04:15:25 mailrelay postfix/smtpd[11704]: EF90720AD:
> client=localhost[127.0.0.1]
> Sep 18 04:15:26 mailrelay postfix/cleanup[13057]: EF90720AD:
> message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
> Sep 18 04:15:26 mailrelay postfix/smtp[11703]: DA1431965E:
> to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=localhost[127.0.0.1],
> delay=1, status=sent (250 Ok: queued as EF90720AD)
> Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: EF90720AD:
> from=<nobody at OUR-MAILSERVER.mail.com>, size=11263, nrcpt=1 (queue active)
> Sep 18 04:15:26 mailrelay postfix/smtp[10879]: EF90720AD:
> to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=10.49.0.7[10.49.0.7],
> delay=1, status=sent (250 2.6.0
> <200609180214.k8I2EuNo016264 at mforward2.dtag.de> Queued mail for delivery)
> Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: EF90720AD: removed
>
> All this work is done with command line and grep...
>
> Is it possible to parse this big logfile only ONCE and extract all this
> info into XML?
>
> Like this:
>
> <message id="200609180214.k8I2EuNo016264 at mforward2.dtag.de">
>    <timestamp>Sep 18 04:15:26</timestamp>
>    <from>sender at mail.net.mx</from>
>    <to>receiver1 at mail.com</to>
>    <to>receiver2 at mail.com</to>
>    <to>receiver3 at mail.com</to>
>    <to>receiver4 at mail.com</to>
>    <queueID>EF90720AD</queueID>
>    <queueID>DA1431965E</queueID>
>    <queueID>755387301</queueID>
>    <spamd>
> 	<score>15</score>
> 	<filtered>yes</filtered>
> 	<sendto>SPAM-FOUND at OUR-MAILSERVER.mail.com</sendto>
>    </spamd>
> </message>
>
> The goal of this is to provide a web interface were we can see if the
> messages were filtered as spam (or deleted by our virus scanner).
>
> Is it possible? Or do I have to scan / parse the file more than once?
> 
> Andi
> 
> -- 
> Mozilla Thunderbird 1.5.0.7
> Arch Linux



From glenn at tangelosoftware.net  Fri Sep 29 21:05:51 2006
From: glenn at tangelosoftware.net (glenn)
Date: 29 Sep 2006 18:05:51 -0700
Subject: analyzing removable media
In-Reply-To: <1159517784.680533.178870@i42g2000cwa.googlegroups.com>
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
	<1159517784.680533.178870@i42g2000cwa.googlegroups.com>
Message-ID: <1159578351.257214.96930@i3g2000cwc.googlegroups.com>


Nick Vatamaniuc wrote:
> glenn wrote:
> > Hi
> > can anyone tell me how given a directory or file path, I can
> > pythonically  tell if that item is on 'removable media', or sometype of
> > vfs, the label of the media (or volume) and perhaps any other details
> > about the media itself?
> > thanks
> > Glenn
>
> It won't be trivial because one of the goals of the operating systems
> is to hide the differences between various types of storage devices and
> make them all look the same (i.e. a jump drive, a CD-ROM, a network
> volume are presented uniformly to the user as just another path in the
> file system).
>
> But you can probably use guesswork on unix OS's, as somebody above
> suggested, and examine the path. If the path contains common media
> mount points then that should give you a clue. On Windows you cannot
> easily know. For example if your file is on D:\file.txt, it is not
> immediatly obvious if D is a jumpdrive, a networked drive, a hard
> drive, or a CD-ROM.
>
> The only thing I can think of is to try to examine the Windows registry
> with the _winreg module. Here are the docs:
> http://docs.python.org/lib/module--winreg.html  There might be a key
> burried in there some place that will tell you which drives are what
> type.

ok - thanks - will look at that - Any one know what a Mac approach
might be? can I expect that playing anything I write with fstab or
`mount` will work on OSX?, or anyother BSD for that matter?



From alefnula at gmail.com  Wed Sep 20 06:00:39 2006
From: alefnula at gmail.com (alefnula at gmail.com)
Date: 20 Sep 2006 03:00:39 -0700
Subject: Cheese Shop Registration error
In-Reply-To: <45108fe6$0$22937$afc38c87@news.optusnet.com.au>
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
	<450f165c$0$5111$afc38c87@news.optusnet.com.au>
	<1158618349.740529.181620@e3g2000cwe.googlegroups.com>
	<4510768f$0$11973$afc38c87@news.optusnet.com.au>
	<1158709651.487843.9930@b28g2000cwb.googlegroups.com>
	<45108fe6$0$22937$afc38c87@news.optusnet.com.au>
Message-ID: <1158746439.912023.297060@h48g2000cwc.googlegroups.com>

Thank You all! :) I successfully registered and submited my first
package :)

Richard Jones wrote:
> John Machin wrote:
> > re.match("[A-Fa-f0-9]{8,8}", data.strip()) makes it plain what is
> > intended ...
> 
> Indeed, thanks.
> 
> 
>     Richard



From umut.tabak at gmail.com  Fri Sep 22 17:50:11 2006
From: umut.tabak at gmail.com (utab)
Date: 22 Sep 2006 14:50:11 -0700
Subject: Python Input from keyboard
Message-ID: <1158961811.122841.163450@e3g2000cwe.googlegroups.com>


hi,
I could not understand why python stdin and stdout are not explained in
any of the tutorials on the net,

I want to read some input continuously from keyboard and then I would
like to process these input.

I have a code like this but getting errors, I would like to terminate
when there is an empty string in the input, why is not this easy as the
"cin" or "scanf". I had to search for even this easy operation. Is
there a way to send EOF signal to terminate input(ctrl+??????)

#!/usr/bin/env python
import sys, math       # load system and math module
x=[]
y=[]
IN=True
print 'input x and y values :   '
while IN:
        xt,yt=input()

        if (xt==' ' or yt==' '):
                print 'you have not entered x or y, quiting'
                break
        else:
                xt= float(xt);yt=float(yt)
                x.append(xt);y.append(yt)

for i in range(x):
        print x[i]



From jhefferon at smcvt.edu  Tue Sep 26 06:15:32 2006
From: jhefferon at smcvt.edu (Jim)
Date: 26 Sep 2006 03:15:32 -0700
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
Message-ID: <1159265732.685702.42790@m73g2000cwd.googlegroups.com>


Jon Ribbens wrote:
> You're right - I've never seen anyone do such a thing. It sounds like
> a highly dubious and very fragile sort of test to me, of very limited
> use.
I have code that checks to see if my CGI scripts generate the pages
that I expect.   That code would break.  (Whether I should not have
written them that way is a different point, but it would break.)

Jim



From ptmcg at austin.rr._bogus_.com  Tue Sep 19 19:16:38 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Tue, 19 Sep 2006 23:16:38 GMT
Subject: pprint: "...thank small children who sleep at night."
References: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
	<mailman.297.1158706362.10491.python-list@python.org>
Message-ID: <qT_Pg.26$4B3.24@tornado.texas.rr.com>

"Brian van den Broek" <broek at cc.umanitoba.ca> wrote in message 
news:mailman.297.1158706362.10491.python-list at python.org...
> Brian L. Troutwine said unto the world upon 19/09/06 05:30 PM:
>> The heading comment to pprint reads:
>>
>> #  This is a simple little module I wrote to make life easier.  I
>> didn't
>> #  see anything quite like it in the library, though I may have
>> overlooked
>> #  something.  I wrote this when I was trying to read some heavily
>> nested
>> #  tuples with fairly non-descriptive content.  This is modeled very
>> much
>> #  after Lisp/Scheme - style pretty-printing of lists.  If you find it
>> #  useful, thank small children who sleep at night.
>>
>> Is the last sentence an obscure reference or in-joke? Can someone
>> explain it? I don't get it.
>>
>
> Maybe it is an in-joke or reference that's blowing past me. But, I would 
> assume that the author has kids whose sound sleep at night left him or her 
> the time to code the module.
>
> Best,
>
> Brian vdB

Why don't you write the author and ask?  His name and e-mail are right in 
the header, just before the lines that you cited.

-- Paul




From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 09:32:05 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 14:32:05 +0100
Subject: Help me use my Dual Core CPU!
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B43A@vogbs009.gb.vo.local>

| > But I have the feeling I'm teaching my grandmother... Is that
| > the kind of thing you were after? Or not?
| 
| I'm not familiar with the expression 'teaching my grandmother'. What
| exactly does it mean?

Teaching my grandmother to suck eggs (and probably several variants
with other relatives): to teach someone something they've known far
better and for far longer.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From filipwasilewski at gmail.com  Thu Sep  7 17:12:05 2006
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: 7 Sep 2006 14:12:05 -0700
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157656285.191995.222400@m79g2000cwm.googlegroups.com>
	<edpvo3$i09$1@atlantis.news.tpi.pl>
Message-ID: <1157663525.235559.91860@m73g2000cwd.googlegroups.com>

Jarek Zgoda wrote:
> Filip Wasilewski napisa?(a):
>
> > There is an easy way to build Python extensions on Windows with MinGW
> > and it works fine for me. Just follow these steps:
>
> It was brougt to my attention that mingw-compiled extensions for Python
> 2.4 use other malloc() that Python 2.4, is it true? Can this have any
> impact on stability?

I have inspected the dll dependencies for python24.dll (ActiveState
build, but I think this is also true for regular one) and my custom
extensions built with MinGW and both of them use malloc() from
msvcr71.dll. I think that as long as the extensions are linked against
proper version of msvcr (7.1) there should not be such surprises.

Other thing is that Python uses it's own memory allocator [1] and to
avoid problems with memory corruption one should not try to allocate
memory with PyMem_Malloc() and free it with free() and so forth.

cheers,
fw

[1] http://www.python.org/doc/2.4.3/api/memoryOverview.html



From mail at microcorp.co.za  Wed Sep 13 02:12:45 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Wed, 13 Sep 2006 08:12:45 +0200
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>	<mailman.384.1158087083.5279.python-list@python.org>	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>	<ee72uh$jca$1@sea.gmane.org>	<4507153C.9070401@tim.thechases.com><ee75vr$tro$1@sea.gmane.org>
	<45072DBA.9040206@tim.thechases.com>
Message-ID: <025501c6d711$d61bcd80$03000080@hendrik>

 "Tim Chase" <python.list at tim.thechases.com> wrote:

To: "Steve Holden" <steve at holdenweb.com>


> >> "But honestly, boss, I didn't write this code!  It was my
> >> evil alter-ego that puts VARCHAR values containing Gilbert &
> >> Sullivan lyrics into the Amount_Due CURRENCY fields!"
> >> 
> > Hence the phrase "Going for a song"?
> 
> I am the very model of a modern major database,
> For gigabytes of information gathered out in userspace.
> For banking applications to a website crackers will deface,
> You access me from console or spiffy user interface.
> 
> My multi-threaded architecture offers you concurrency,
> And loads of RAM for caching things reduces query latency.
> The data is correctly typed, a fact that I will guarantee,
> Each datum has a data type, it's specified explicitly.
> 
> is-it-friday-yet'ly yers,
> 
> -tkc

I love this group - thanks for that - it made my day ...

- Hendrik



From bernd at ewill.de  Mon Sep 25 14:30:13 2006
From: bernd at ewill.de (Bernd Will)
Date: Mon, 25 Sep 2006 20:30:13 +0200
Subject: SSL certificate meta data
Message-ID: <20060925183729.CF4671E4002@bag.python.org>

Hello everybody,

 

please help me with this topic:

 

Working at a big company (+100.000 employees worldwide), we have an amount
of data centers and shared services where our webservers, backend server
etc. are located.

Now it happens from time to time, that certificates are expired and instead
of our data centers organizing new certificates in time, we often are faced
with expired certificates and offline connections.

 

The only solution from me and my colleagues view (as poor at it sounds) is
to setup a little python script "pinging" an amount of about 2.000 servers
in daily intervals checking for the validity of those SSL certificates.

 

Though there is a lot of examples demonstrating how to access SSL
connections, I could not find a documentation about the certificate's data
(validation information).

I would love to read programmatically some information out of the
certificates itself (who signed it and what is the validation period, i.e.
meta data).

 

Can someone please help me out here !?

(I know we should better setup a database with validation dates, but believe
me, we didn't succeed in it)

 

Thanks in advance for any help or tip

 

Regards

Bernd

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From sebastien.thur at laposte.net  Wed Sep  6 08:03:13 2006
From: sebastien.thur at laposte.net (seb)
Date: 6 Sep 2006 05:03:13 -0700
Subject: getting quick arp request
Message-ID: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>

Hello,

****************
What I need :
****************

I need to write a scanner that test all the IP adresses that repond on
a given port.
The Ip list is of roughly of length 200.
I need to get the response every 60 seconds (or better).

I would prefer first not to use nmap.

****************
Configuration :
*****************
Python 2.4.1.
To test what is going on I use ethereal.
I am using winXP pro on a 2GHZ P4 and 512 Mo.

***********
Problem :
***********

I tried to implement a simplistic threaded version where each thread is
opening a blocking socket on the IP and port.

I have monitored using etherereal that I get one arp query every second
roughly.

I am expecting a speed on the same oder of magnitude as the one that
one can get from a standard IP/port scanner. To compare, I have used
angry Ip scanner and I have seen that roughly 200 arp request where
sent in 20 seconds.

*******
Also :
*******

I have also considered using some asynchrone connection but AFAIK you
need first to open the socket and so to use the arp protocol.


Thanks I advance for your help.

Sebastien.

*****************
Code sample :
*****************

# Sebastien 6/9/2006 for testing purposes

import time
import Queue
from threading import *
import threading
import socket

try :
	import psyco
	psyco.full()
except :
	pass

class socket_test (Thread):
	def __init__ (self,adresse):
		Thread.__init__(self)
		self.PORT=21
		self.adresse=str(adresse)
		print "in thread adresse = ", self.adresse
		self.service=[]
		self.start()

	def run(self) :
		service_unit=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
		service_unit.setblocking(1)
		print "socket Ip = ",self.adresse

		try :
			service_unit.connect((str(self.adresse), self.PORT))
		except Exception,e:
			print "exception ",e

		self.service.append(service_unit)



class groupe_thread :

	def __init__(self,liste):
		self.liste=liste

	def go(self):
		print "self.liste = ",self.liste
		for el in self.liste :
			print "go starting thread on : ",el
			s=socket_test(el)




liste=[]
base ="192.168.3."
rang=range(1,50)
for r in rang:
	add=base+str(r)
	liste.append(add)
a=groupe_thread(liste)
ut= a.go()
print "the end (main) .."



From michele.simionato at gmail.com  Thu Sep 14 07:00:37 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 14 Sep 2006 04:00:37 -0700
Subject: How can I get the function's caller?
In-Reply-To: <92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
	<mailman.4.1158129274.10491.python-list@python.org>
	<92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>
Message-ID: <1158231637.449248.95130@d34g2000cwd.googlegroups.com>

David wrote:
> Il Wed, 13 Sep 2006 07:34:45 +0100, Steve Holden ha scritto:
>
> > What do you need this name for, just as a materr of interest? There are
> > ways of manipulating the stack frames, but they'll be slow and possibly
> > unreliable.
> I am writing a big (for me) program and it would be helpful to have a dummy
> function like this:
>
> def function_A_subfunction_B(self, ....)
> 	dummy()
>
> that display a standard message like this:
>
> "Dummy: 'function_A_subfunction_B' in module 'module' is not defined yet"
>
> regards
> David

Check also the warnings module (it will give you also line number
information for free).

            Michele Simionato



From deets at nospam.web.de  Mon Sep 25 10:29:33 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 16:29:33 +0200
Subject: Python API to OS X Address Book?
References: <mailman.571.1159194359.10491.python-list@python.org>
Message-ID: <4nq7edFbjf97U1@uni-berlin.de>

Brendon Towle wrote:

> Essentially, I'm looking for a Python equivalent to the ObjectiveC stuff
> that can be found at:
> 
>  
http://developer.apple.com/documentation/UserExperience/Conceptual/AddressBook/index.html
> 
> Google got me that far, but was not particularly helpful past that.
> 
> Anyone have any pointers?

Google for pyobjc, the python-objective-c-bridge. Install it, and you should
be able to work with any objective c class.

Diez


From flupke at nonexistingdomain.com  Thu Sep 28 03:00:44 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 28 Sep 2006 07:00:44 GMT
Subject: Difference between two dates in seconds
In-Reply-To: <mailman.861.1159421384.10491.python-list@python.org>
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>	<mailman.822.1159381205.10491.python-list@python.org>	<pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
	<mailman.861.1159421384.10491.python-list@python.org>
Message-ID: <wqKSg.100459$qV7.1377329@phobos.telenet-ops.be>

Fredrik Lundh schreef:
<snip>
> 
>>>> def get_seconds(td):
> ...     return td.days * (24*60*60) + td.seconds
> ...
>>>> import dis
>>>> dis.dis(get_seconds)
>   2           0 LOAD_FAST                0 (td)
>               3 LOAD_ATTR                0 (days)
>               6 LOAD_CONST               4 (86400)
>               9 BINARY_MULTIPLY
>              10 LOAD_FAST                0 (td)
>              13 LOAD_ATTR                1 (seconds)
>              16 BINARY_ADD
>              17 RETURN_VALUE
> 
> </F>

Ha, i didn't know about the dis module.
Looks fun.
I get these results:

>>> def get_seconds(td):
...   return td.days * (24*60*60) + td.seconds
...
>>> dis.dis(get_seconds)
  2           0 LOAD_FAST                0 (td)
              3 LOAD_ATTR                1 (days)
              6 LOAD_CONST               1 (24)
              9 LOAD_CONST               2 (60)
             12 BINARY_MULTIPLY
             13 LOAD_CONST               2 (60)
             16 BINARY_MULTIPLY
             17 BINARY_MULTIPLY
             18 LOAD_FAST                0 (td)
             21 LOAD_ATTR                2 (seconds)
             24 BINARY_ADD
             25 RETURN_VALUE

>>> def get_seconds2(td):
...   return td.days * 86400 + td.seconds

>>> dis.dis(get_seconds2)
  2           0 LOAD_FAST                0 (td)
              3 LOAD_ATTR                1 (days)
              6 LOAD_CONST               1 (86400)
              9 BINARY_MULTIPLY
             10 LOAD_FAST                0 (td)
             13 LOAD_ATTR                2 (seconds)
             16 BINARY_ADD
             17 RETURN_VALUE

Using 86400 instead of (24*60*60) is faster

Benedict


From steve at REMOVEME.cybersource.com.au  Mon Sep 25 04:31:18 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Mon, 25 Sep 2006 18:31:18 +1000
Subject: Difficulty with maxsplit default value for str.split
References: <pan.2006.09.24.05.48.22.103431@REMOVE.THIS.cybersource.com.au>
	<mailman.516.1159086906.10491.python-list@python.org>
Message-ID: <pan.2006.09.25.08.31.18.807005@REMOVEME.cybersource.com.au>

On Sun, 24 Sep 2006 10:34:31 +0200, Fredrik Lundh wrote:

>> But the split method doesn't accept a value of None for maxsplit, and I
>> don't know what default value I should be using.
> 
>      def mysplit(S, *args):
> 	pre_processing()
> 	result = S.split(*args)
> 	post_processing()
> 	return result

Thanks Fredrik, that's *exactly* the sort of insight I was lacking. And
now that you've shown me, I can't believe how obvious it is.


-- 
Steven D'Aprano 



From sferriol at imag.fr  Fri Sep  1 06:44:52 2006
From: sferriol at imag.fr (Sylvain Ferriol)
Date: Fri, 01 Sep 2006 12:44:52 +0200
Subject: a new object definition
In-Reply-To: <1157100926.420077.229900@p79g2000cwp.googlegroups.com>
References: <ed8rce$ikn$1@trompette.imag.fr>
	<1157100926.420077.229900@p79g2000cwp.googlegroups.com>
Message-ID: <ed93bq$r42$1@trompette.imag.fr>

Michele Simionato a ?crit :
> Sylvain Ferriol wrote:
> 
>>hello everybody,
>>
>>i want to talk with you about a question i have in mind and i do not
>>find a answer. it 's simple:
>>why do we not have a beatiful syntax for object definition as we have
>>for class definition ?
> 
> 
> See http://www.python.org/dev/peps/pep-0359  (already rejected by
> Guido).
> 
i do not understand the withdrawal note, what do "different level" mean ?
do you have an example or is it python core implemantation problem ?
>    Michele Simionato
> 


From fuzzyman at gmail.com  Tue Sep 26 18:05:51 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 26 Sep 2006 15:05:51 -0700
Subject: 2.5 updates for syntax file
In-Reply-To: <mailman.739.1159302502.10491.python-list@python.org>
References: <FOVRg.23$1n3.227@news.tufts.edu>
	<1159217085.967554.196930@i3g2000cwc.googlegroups.com>
	<mailman.739.1159302502.10491.python-list@python.org>
Message-ID: <1159308351.902162.194510@d34g2000cwd.googlegroups.com>


Grzegorz Makarewicz wrote:
> Andrea wrote:
> >> Hi everyone. I'm updating my UltraEdit syntax file for Python 2.5 and
> >> was wondering if anyone knew of other additions to make besides these. I
> >> found all of these in the What's New document, but wasn't sure if there
> >> were other important things to add for highlight.
> >>
> >
> > Great :)
> >
> > - Two new built-in functions, any() and all()
> > - A new warning, UnicodeWarning
> >
> >
> Who is using FAR and isn't happy ?

What is FAR ?

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> 
> Grzegorz Makarewicz



From jaysherby at gmail.com  Fri Sep  1 13:28:21 2006
From: jaysherby at gmail.com (Jay)
Date: 1 Sep 2006 10:28:21 -0700
Subject: raw audio in windows
In-Reply-To: <gqiff250pefqisbp3dik5fkgl4udshjbqa@4ax.com>
References: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
	<gqiff250pefqisbp3dik5fkgl4udshjbqa@4ax.com>
Message-ID: <1157131701.889766.250930@h48g2000cwc.googlegroups.com>

I'm afraid I can't do that.  Don't take it personally.  I would send it
to you, but at this time, I'm developing this app with a friend and I
don't know his feelings about the program's distribution or licensing.
I can't send it around until I speak to him about it.

Sorry.


spiffy wrote:
> On 31 Aug 2006 21:34:13 -0700, "Putty" <jaysherby at gmail.com> wrote:
>
> >Hi.  I've written a small python script that was primarily meant for
> >use in a unix-compatible environment.  It writes a bunch of raw audio
> >to a file and then sends the file to /dev/audio and the system plays
> >the audio.  Very simple.
> >
> >Is there a simple way I could edit the script (which just uses the
> >system call to do this) to run under windows?
> >
> >This is the code that would have to change:
> >os.system("cat audioBuf > /dev/audio")
>
>
> hey, that sounds like some stuff i've been working on...
> is there any possibility that you could send me that script so I could
> take a look at it and learn?
> i'm new to python and programming in general. i'm working on some
> algorithmic composition stuff and also trying to write some synths....
> here's my email...
> dawodu4fun at yahoo.com



From fredrik at pythonware.com  Tue Sep 12 13:22:04 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 19:22:04 +0200
Subject: best small database?
In-Reply-To: <UKOdnScrXf0oQ5vYnZ2dnUVZ_vudnZ2d@comcast.com>
References: <0rdNg.6440$c22.5757@trnddc07>	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>	<7x8xkqkm0g.fsf@ruckus.brouhaha.com>
	<UKOdnScrXf0oQ5vYnZ2dnUVZ_vudnZ2d@comcast.com>
Message-ID: <ee6qbs$jn3$2@sea.gmane.org>

Larry Bates wrote:

> For small numbers of blobs it works fine.  The problem comes about,
> more specifically, because Oracle's method for upgrading from one
> version to another is Export, create new database, Import.

Does "Pray" come before or after the steps you mentioned?

</F>



From fredrik at pythonware.com  Tue Sep 26 05:35:44 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 11:35:44 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efapp8$rfd$3@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>	<efaj9p$fqq$2@lust.ihug.co.nz>	<efakif$idf$1@lust.ihug.co.nz>	<mailman.644.1159256238.10491.python-list@python.org>
	<efapp8$rfd$3@lust.ihug.co.nz>
Message-ID: <efas9g$pcg$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

 > SQL databases like MySQL are _designed_ for efficiency.

unlike the Python data types, you mean ?

</F>



From sapience at gmail.com  Wed Sep 13 12:22:05 2006
From: sapience at gmail.com (Wonder)
Date: 13 Sep 2006 09:22:05 -0700
Subject: Question about Python 2.4.3 from RPM on RedHat 9.0
Message-ID: <1158164525.093889.214850@h48g2000cwc.googlegroups.com>

Hello,

I'm installing Python 2.4.3 on my RedHat 9.0. I downloaded
Python-2.4.3.tgz and would like to build a RPM package from it and then
install from the RPM.

When I run "rpmbuild -ta Python-2.4.3.tgz", I got an error "error:
%changelog not in descending chronological order". Could anybody tell
me how to solve this? Also, what's the latest RPM installation for
Python?

Thanks.

Wonder



From roy at panix.com  Mon Sep  4 16:55:18 2006
From: roy at panix.com (Roy Smith)
Date: 4 Sep 2006 16:55:18 -0400
Subject: Need help with SOAPpy -- how to supply user credentials?
Message-ID: <edi3rm$inp$1@panix2.panix.com>

I just got SOAPpy 0.11.6 running under Python 2.3.5.  I can do some
simple stuff like:

from SOAPpy import WSDL
wsdlFile = 'http://myserver/soap/XPlanner?wsdl'
server = WSDL.Proxy(wsdlFile)
print server.methods.keys()

The problem is, this (not surprisingly) prompts for a username and
password on the console.  When I type them in, it works fine, but I'd
like to supply them instead of getting prompted interactively.

The SOAPpy distribution has a URLopener class which looks like it does
what I want, but I can't figure out how to tell WSDL.Proxy to use that
class instead of the default.  What's the secret?


From sc_wizard29 at hotmail.com  Fri Sep 15 04:01:22 2006
From: sc_wizard29 at hotmail.com (sc_wizard29 at hotmail.com)
Date: 15 Sep 2006 01:01:22 -0700
Subject: Check if variable is an instance of a File object
In-Reply-To: <pan.2006.09.15.07.51.10.187745@gmx.net>
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
	<pan.2006.09.15.07.51.10.187745@gmx.net>
Message-ID: <1158307282.216407.223980@p79g2000cwp.googlegroups.com>


Marc 'BlackJack' Rintsch a ecrit :

> And what do you do if you check for `file` and it isn't such an instance?
> Raise an exception?  A no, that's something you don't like.  So what else?  ;-)

Well, I prefer the idea of raising my *own* exception to the idea of
having an unknown behavior occur (for ex : what if the argument is NOT
a File, but is "itereable" ?)

But anyway, I guess the most "pythonic" way is to do nothing ;-)


One more question : how to test if 'file' is a File object ?



From mpeters42 at gmail.com  Mon Sep 11 00:12:47 2006
From: mpeters42 at gmail.com (Mark Peters)
Date: 10 Sep 2006 21:12:47 -0700
Subject: Simple regex with whitespaces
In-Reply-To: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
References: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
Message-ID: <1157947967.545546.238970@i42g2000cwa.googlegroups.com>

>   Which of course does not work. I cannot express the fact: sentence
> have 0 or 1 whitespace, separation of group have two or more
> whitespaces.
>
> Any suggestion ? Thanks a bunch !
How about this:

>>> import re
>>> s = '    hello world               how are you'
>>> re.split(r"\s{2,}",s)
['', 'hello world', 'how are you']



From franz.steinhaeusler at gmx.at  Mon Sep 18 07:37:19 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Mon, 18 Sep 2006 13:37:19 +0200 (CEST)
Subject: PythonCAD question
References: <eeluh9$2tp$1@newsreader2.utanet.at>
	<eelvij$74k$02$1@news.t-online.com>
Message-ID: <eem0df$7ai$1@newsreader2.utanet.at>

Peter Otten wrote:

> Franz Steinhaeusler wrote:
>
>> Hello NG,
>> 
>> I tried to run PythonCad on window and
>> got follwoing traceback:
>> 
>> Traceback (most recent call last):
>>   File "C:\temp\PythonCAD-DS1-R34\PythonCad.py", line 45, in ?
>>     import PythonCAD.Interface.Cocoa.ImageDocument
>>   File
>>   "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\ImageDocument.py",
>>   l
>> ine 38, in ?
>>     import PythonCAD.Interface.Cocoa.Globals
>>   File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\Globals.py",
>>   line 23
>> , in ?
>>     from Foundation import NSObject
>> ImportError: No module named Foundation
>> 
>> * Waht is the module "Foundation"?
>> 
>> Where can I get it?
>
> The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is
> running on a Mac. The missing module is rather a symptom than the cause of
> the bug.
>
> Peter

Hello Peter, 

On the homepage,
http://www.pythoncad.org/
there is the text:


"PythonCAD does run on Windows if you have the Windows
ports of the required libraries and modules." 

-- 
Franz Steinhaeusler



From goofyheadedpunk at gmail.com  Wed Sep 13 19:08:37 2006
From: goofyheadedpunk at gmail.com (Brian L. Troutwine)
Date: 13 Sep 2006 16:08:37 -0700
Subject: Delete items in nested dictionary based on value.
Message-ID: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>

I've got a problem that I can't seem to get my head around and hoped
somebody might help me out a bit:

I've got a dictionary, A, that is arbitarily large and may contains
ints, None and more dictionaries which themselves may contain ints,
None and more dictionaries. Each of the sub-dictionaries is also
arbitrarily large. When pretty printing A, in the context I'm using A
for, it's rather helpful to remove all key:value pairs where value is
None. So I'd like to be able to define a function dict_sweep to recurse
through A and del all the keys with None as a value.

I feel like the solution is right on the tip of my tounge, so to speak,
but I just can't quite get it. Anyway, here's the best I've come up
with:

def dict_sweep(dictionary, key_value):
    """Sweep through dictionary, deleting any key:value where
    value is None.

    """
    # Find key at position key_value.
    key = dictionary.keys()[key_value]

    # If the key value is a dictionary we want to move into it.
    # Therefore we call rec_rem on dictionary[key] with a
    # key_value of 0
    if type(dictionary[key]) is type({}):
        dict_sweep(dictionary[key], 0)

    # If the value isn't a dictionary we care only that it's not None.
    # If it is None we nuke it and call rec_rem on the current
    # dictionary with key_value incrimented by one.
    elif dictionary[key] is None:
        del dictionary[key]
        dict_sweep(dictionary, key_value+1)

    # If the value isn't a dictionary and the value isn't None then
    # we still want to walk through to the next value in the
    # dictionary, so call rec_rem with key_value+1
    else:
        dict_sweep(dictionary, key_value+1)

Assuming dict_sweep worked perfectly it would take input like this:

A_in = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}

B_in = {1: {1: {1: None, 2: {1: None}}, 2: 2, 3: None}

and output this:

A_out = {1: {2: 2, 3: {2: 2}}, 2: 2}

B_out = {2:2}

This dict_sweep above obviously doesn't work and I'm rather afraid of
hitting python's recursion limit. Does anyone see a way to modify
dict_sweep in it's current state to perform dictionary sweeps like
this? What about a non-recursive implementation of dict_sweep?



From kylotan at gmail.com  Wed Sep 20 06:51:11 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 20 Sep 2006 03:51:11 -0700
Subject: RELEASED Python 2.5 (FINAL)
In-Reply-To: <mailman.270.1158670156.10491.python-list@python.org>
References: <mailman.270.1158670156.10491.python-list@python.org>
Message-ID: <1158749471.598698.43910@i3g2000cwc.googlegroups.com>

Anthony Baxter wrote:
> It's been nearly 20 months since the last major release
> of Python (2.4), and 5 months since the first alpha
> release of this cycle, so I'm absolutely thrilled to be
> able to say:
>
>     On behalf of the Python development team
>     and the Python community, I'm happy to
>     announce the FINAL release of Python 2.5.

Any chance the docs links could be fixed?

The link on the front page still goes to 2.4.3 on docs.python.org, and
the link from /download/releases/2.5/ goes to 2.6a0.

-- 
Ben Sizer



From wildemar at freakmail.de  Sat Sep 16 17:03:32 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sat, 16 Sep 2006 23:03:32 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158437430.667410.78480@i3g2000cwc.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>	<mailman.181.1158427823.10491.python-list@python.org>	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>	<pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>
	<1158437430.667410.78480@i3g2000cwc.googlegroups.com>
Message-ID: <450C66A4.4020101@freakmail.de>

nicolasfr at gmail.com wrote:
> Rakotomandimby (R12y) wrote:
>> What you should have done first is to suggest to contribute to the
>> official Python doc.
> 
> I wrote an email a few months ago to the Python docs support email
> address to offer my help but never got any answer.
> 
What did that email say?
- "Your docs suck!"? (useless)
- "Your docs aren't the most useful. May I offer to help?" (better, but 
somewhat thin. And if the answer had just been "Yes." You'd be no wiser.)
- "Hey, I found this article explaining XY. I made a 
tutorial/how-to/documentation-chapter, and here it is. Hope you can use 
it." (fantastic/preferred)

http://www.python.org/dev/doc/ has info on how to participate.


> Everytime I am lookink at how to do this or that in Python I write it
> down somewhere on my computer. (For ex. Threading. After reading the
> official documentation I was a bit perplex. Hopefully I found an
> article an managed to implement threads with only like 20 lines of code
> in my script. That should have been in the docs first, not in an
> article elsewhere... Same problem for handling gzipped files. I wanted
> to know if the file I opened was a gzip archive or not. Not a clue in
> the docs...) I have just decided to share all this knowledge this with
> other. Community will decide if this wiki is of any interest. If not it
> will just remain my personnal notebook for Python tips...

Let me stress that contributing to the *official* docs is a lot more 
rewarding and (I think) sensible. I can't stop you and I appreciate your 
enthusiasm. You might however consider helping fix the dam than build 
one where no water water runs.

wildemar


From gnewsg at gmail.com  Mon Sep 18 11:07:05 2006
From: gnewsg at gmail.com (billie)
Date: 18 Sep 2006 08:07:05 -0700
Subject: Interact with system command prompt
In-Reply-To: <1158590633.382840.307680@h48g2000cwc.googlegroups.com>
References: <1158588506.989070.257550@m7g2000cwm.googlegroups.com>
	<4n7ogmF8slojU1@uni-berlin.de>
	<1158590633.382840.307680@h48g2000cwc.googlegroups.com>
Message-ID: <1158592025.137940.318950@i3g2000cwc.googlegroups.com>

Uhm... It seems that IPython got some problems:
http://ipython.scipy.org/doc/manual/node12.html

In details:

>Note that this does not make IPython a full-fledged system shell. In particular, it has >no job control, so if you type Ctrl-Z (under Unix), you'll suspend pysh itself, not the >process you just started.

>What the shell profile allows you to do is to use the convenient and powerful syntax of >Python to do quick scripting at the command line.



From fredrik at pythonware.com  Tue Sep 26 06:06:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 12:06:33 +0200
Subject: Surprise using the 'is' operator
In-Reply-To: <1159264481.693180.67850@e3g2000cwe.googlegroups.com>
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
Message-ID: <efau39$vlt$1@sea.gmane.org>

codefire wrote:

> I was just trying to check if objects were the same (object), didn't
> know Integers were a special case.

they're not, really; "is" works the same way for all objects.

when you ask for a new immutable object, a Python implementation may 
always reuse an existing object, if it wants to.

the CPython implementation does this for small integers, booleans, None, 
empty tuples, certain strings, type objects, etc.  this also applies to 
library code; for example, string methods often return a reference to 
"self" if the method didn't actually change anything.

</F>



From steve at holdenweb.com  Tue Sep 26 10:01:34 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 10:01:34 -0400
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efaeg4$5oj$2@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
Message-ID: <efbbqc$kr9$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <2rTRg.95640$AD5.1277027 at phobos.telenet-ops.be>, Pom wrote:
> 
> 
>>I want to convert a Mysql resulset to a dictionary.
> 
> 
> Here's a function that does this one row at a time:
> 
> def GetEachRecord(TableName, Fields, Condition, Values, Extra = "") :
>     """generator which does an SQL query which can return 0 or more
>     result rows, yielding each record in turn as a mapping from
>     field name to field value. TableName can be a single table name,
>     or a comma-separated list of names for a join. Extra allows
>     specification of order/group clauses."""
>     Cursor = sql.conn.cursor() # modify this as appropriate
>     Cursor.execute \
>       (
>             ", ".join(Fields)
>         +
>             " from "
>         +
>             TableName
>         +
>             " where "
>         +
>             Condition
>         +
>             " "
>         +
>             Extra,
>         Values
>       )
>     while True :
>         NextRow = Cursor.fetchone()
>         if NextRow == None :
>             Cursor.close()
>             raise StopIteration
>         #end if
>         yield dict(zip(Fields, NextRow))
>     #end while
> #end GetEachRecord
> 
> You'd use this something like
> 
>     for Link in GetEachRecord(...) :
>         ... Link[fieldname] ... blah-blah ...
> 
This is a spectacularly bad (non-)solution to the original problem. It 
also shows a fine disregard for readability requirements. I suppose you 
are using a generator to avoid data duplication, but for 100,000 records 
this could be regarded as a premature optimisation on modern computers.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From roy at panix.com  Mon Sep 25 21:01:15 2006
From: roy at panix.com (Roy Smith)
Date: Mon, 25 Sep 2006 21:01:15 -0400
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<1159205875.573485.19930@i3g2000cwc.googlegroups.com>
Message-ID: <roy-19BE2F.21011525092006@reader2.panix.com>

In article <1159205875.573485.19930 at i3g2000cwc.googlegroups.com>,
 "codefire" <tony.bedford at gmail.com> wrote:

> Might be handy to point out that the Python version will be easier (and
> therefore cheaper) to maintain compared to the Perl version. As someone
> said there are numerous success stories at python.org.
> 
> You could also point him at :
> 
> http://www.tiobe.com/tpci.htm
> 
> Although Perl is higher than Python (by one place) you will noticed
> that Perl activity is in sharp decline in contrast to Python's steady
> growth.

Now, *that's* a graphic a marketing droid can understand.  Green arrow up 
vs. two red arrows down.  Thanks.

Of course, the scary part of that graphic is that after I show it to the 
marketing droids, I might find myself working on building a PHP or VB 
binding for our product :-(


From cliff at develix.com  Mon Sep  4 00:40:05 2006
From: cliff at develix.com (Cliff Wells)
Date: Sun, 03 Sep 2006 21:40:05 -0700
Subject: python-database
In-Reply-To: <1157344218.628453.158360@74g2000cwt.googlegroups.com>
References: <1157344218.628453.158360@74g2000cwt.googlegroups.com>
Message-ID: <1157344805.31869.181.camel@devilbox>

On Sun, 2006-09-03 at 21:30 -0700, sridhar wrote:
> is there any way to call stored procedures from python as in java?

I mostly use PostgreSQL, so perhaps it's different for some other
databases, but calling stored procedures doesn't require any special
support from the language or driver.  Usually you simply SELECT from the
stored procedure.

Also, you might be interested to know that with PostgreSQL you can also
*write* stored procedures in Python which I consider a huge plus.

Regards,
Cliff

-- 



From crystalattice at gmail.com  Tue Sep 26 13:51:39 2006
From: crystalattice at gmail.com (crystalattice)
Date: 26 Sep 2006 10:51:39 -0700
Subject: Advice for a novice on making ambitious cross-platform GUI app
References: <1159200780.240509.270660@i42g2000cwa.googlegroups.com>
Message-ID: <1159293097.000144.267460@k70g2000cwa.googlegroups.com>

Chelonian wrote:
> Can Python *alone* produce something like what I've described?  Or
> would I have to have some parts written in C?  Or is Python really not
> best-suited to these needs?

As already mentioned, Python is capable of doing nearly any type of
program.  As long as you don't need low-level functionality (like
manual memory manipulation or device drivers) it should be fine.  With
computers nowadays, I don't think the speed hit will be that bad, but
YMMV.

> Is using SPE with wxGlade a good choice?  What about Boa Constructor?

I use SPE for all of my coding and have very few complaints.  I've
never used Boa so I don't know how well it will do.  One of the reasons
I chose SPE is because of the integrated wxGlade; because it's still in
beta, SPE sometimes crashes when using it so be aware of that.

> Is it something one person could do over the course of a year or so,
> working say 10 hours a week on it?  Or is this really out of reach of
> anyone other than a hardcore programmer or even a team of them?

Given enough time, one person can do nearly any programming task.  If
you have a deadline to complete it, then you probably really want
someone with more experience to help you.  If you don't mind reading
books and learning as you go, then go for it.  I'm working on making an
RPG from scratch and I'm the only one doing it, but I'm learning a lot
and just keep asking questions.

> If I write it using Python 2.5 and wxPython, do I have to use py2app or
> something to create an executable and necessary library files so it
> will run on Mac?  (Because of wxPython's libraries, which the Mac
> won't have?).

If you want to make an executable for the Mac, then you'll need py2app.
 If you want it to run like a normal Python script, then the user can
just call it from the command line.



From orsenthil at gmail.com  Fri Sep  8 12:52:11 2006
From: orsenthil at gmail.com (Phoe6)
Date: 8 Sep 2006 09:52:11 -0700
Subject: Accessing Add/Remove Programs Details
In-Reply-To: <mailman.113.1157621571.5279.python-list@python.org>
References: <mailman.113.1157621571.5279.python-list@python.org>
Message-ID: <1157734331.641656.155120@m79g2000cwm.googlegroups.com>

Tim Golden wrote:
> [Phoe6]
> and perhaps you need something like
> this (altho' obviously more sophisticated):
> <code>
> import wmi
>
> appname = "Python 2.4.3"
> c = wmi.WMI ()
> for product in c.Win32_Product (Caption=appname):
>   print product.Caption
>   # product.Uninstall ()
>
> </code>

Thanks Tim for the reply. I started looking along the same lines.
It looks like, I need to give the Product details exactly as it is
registered(?).
Trying out stuff like:
>>> import wmi
>>> appname = "IsoBuster 1.9.1"
>>> c = wmi.WMI()
>>> for product in c.Win32_Product(Caption=appname):
	print product.Caption
	ret_val = product.Uninstall()
	print ret_val


>>>
Did not work.

There is script example given the M$ site:
<example_snippet>
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" _
    & strComputer & "\root\cimv2")
Set colSoftware = objWMIService.ExecQuery _
    ("Select * from Win32_Product " _
        & "Where Name = 'Personnel database'")
For Each objSoftware in colSoftware
    objSoftware.Uninstall()
Next

</example_snippet>

I guess to convert the same to python.  I shall try more and keep
posted.

Thanks,
Senthil



From rtw at freenet.co.uk  Fri Sep 29 05:26:40 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Fri, 29 Sep 2006 04:26:40 -0500
Subject: PATCH: Speed up direct string concatenation by 20+%!
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
Message-ID: <Xns984D6A0C5E46CrtwfreenetREMOVEcouk@216.196.109.145>

Larry Hastings wrote in news:1159495643.213830.289620
@m7g2000cwm.googlegroups.com in comp.lang.python:

> _________
> THE PATCH
> 
> The core concept: adding two strings together no longer returns a pure
> "string" object.  Instead, it returns a "string concatenation" object
> which holds references to the two strings but does not actually
> concatenate
> them... yet.  The strings are concatenated only when someone requests
> the
> string's value, at which point it allocates all the space it needs and
> renders the concatenated string all at once.

On the python 3k list there is a thread about stings becoming "views", 
I think this is similar to what you are doing here.

<url:http://search.gmane.org/?
query=string+view&author=&group=gmane.comp.python.python-
3000.devel&sort=relevance&DEFAULTOP=and&xP=string.view.
&xFILTERS=Gcomp.python.python-3000.devl---A>

http://tinyurl.com/kadco

Rob.


From anthra.norell at tiscalinet.ch  Mon Sep  4 15:28:40 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Mon, 4 Sep 2006 21:28:40 +0200
Subject: newbe question about removing items from one file to another file
References: <1156714534.318183.326220@i3g2000cwc.googlegroups.com><1156895504.960976.226950@i3g2000cwc.googlegroups.com><mailman.10099.1156931029.27775.python-list@python.org>
	<1157338719.276714.7400@74g2000cwt.googlegroups.com>
Message-ID: <00f601c6d058$54369300$0201a8c0@mcuf7>


----- Original Message -----
From: <Eric_Dexter at msn.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Monday, September 04, 2006 4:58 AM
Subject: Re: newbe question about removing items from one file to another file


>
> Anthra Norell wrote:
> > Dexter,
> >
> > Here's a function that screens out all instrument blocks and puts them into a dictionary keyed on the instrument number:
> >
> > --------------------------------------------
> >
> > def get_instruments (file_name):

etc.

> > > <CsOptions>
> > > >   -W -d -o tone.wav
> > > > </CsOptions>
> > > >
> > ...
> > etc.
>
> I cut and pasted this..  It seems to be crashing my program.. I am not
> sure that I have all the right imports..  seems to be fine when I go to
> an older version of the file...  I uploaded it onto source forge.
>
> https://sourceforge.net/project/showfiles.php?group_id=156455&package_id=201306&release_id=444362
> http://www.dexrow.com
>

Eric (Eric or Dexer?)
      This thread seems to have split. So let me reiterate: please copy the output when you cut, paste and run. If you have an
import problem it must be on the other side of your interface with SE, because I don't import anything and SE imports what it needs.

Frederic




From sandravandale at yahoo.com  Mon Sep 18 19:32:18 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 18 Sep 2006 16:32:18 -0700
Subject: Cross-process dictionary/hashtable
In-Reply-To: <mailman.239.1158609911.10491.python-list@python.org>
References: <1158608672.610841.271530@b28g2000cwb.googlegroups.com>
	<mailman.239.1158609911.10491.python-list@python.org>
Message-ID: <1158622338.454968.145910@d34g2000cwd.googlegroups.com>

I looked at posh, and read the report on it, it's very interesting, but
it will not work for me. Posh requires that it forks the processes, but
in mod_python the processes were forked by apache and use different
interpreters.

Calvin Spealman wrote:
> Maybe what you want is something like memcache
> (http://cheeseshop.python.org/pypi/memcached), which offers a basic
> in-memory, key-value share that processes (even on different boxes)
> can connect to. Of course, as with any kind of concurrent work, its
> going to be far easier to have some restrictions, which memcache has.
> For example, full python objects being shared isn't a great idea, or
> even possible in many situations. The closest you could get with
> something like memcache is to wrap it up in a dictionary-like object
> and have it pickle things coming in and out, but that won't work for
> everying and has security concerns.

Memcached looks like it will do the job. Thanks!

-Sandra



From bearophileHUGS at lycos.com  Tue Sep 26 08:30:17 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 26 Sep 2006 05:30:17 -0700
Subject: Ordered dicts
Message-ID: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>

I have found that in certain situations ordered dicts are useful. I use
an Odict class written in Python by ROwen that I have improved and
updated some for personal use.

So I'm thinking about a possible C version of Odict (maybe fit for the
collections module).

On a 32 bit Win Python 2.5 requires about:
28.2 bytes/element for set(int)
36.2 bytes/element for dict(int:None)

Deleted keys from a dict/set aren't removed, they are tagged as
deleted.
My experience of CPython sources is tiny, I have just read few parts,
so a person much more expert than me can comment the following lines.

During the printing of the set/dict I think such flags are just read
and skipped one after the other.

So I think to keep the insertion order of the keys a simple chained
list is enough, each inserted key has a pointer to the successive one
(even deleted keys). So theoretically an Odict of (int:None) can
require just 40.2 bytes/element :-)  (Python Odicts require much more
memory, because they ).
(I don't know if some extra memory for the garbage collector is
necessary, I don't think so.)

The simple linked list has to be managed (tail insertions only), and
scanned from the listHead inside iterating methods like iteritems,
items, values, etc.

If such solution is possibile, then how much difficult is such
implementation?

Bye,
bearophile



From fredrik at pythonware.com  Tue Sep 26 01:34:09 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 07:34:09 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <efae4h$e5b$1@sea.gmane.org>

walterbyrd wrote:

 > does anybody earn a living programming in python?

of course.

> If so, I doubt there are many. 

don't be silly.

> I wonder why that is?

what what is ?

</F>



From niemand.leermann at thomas-guettler.de  Mon Sep 25 09:57:11 2006
From: niemand.leermann at thomas-guettler.de (Thomas Guettler)
Date: 25 Sep 2006 13:57:11 GMT
Subject: what is the best practice to separate Pygtk and long running
	thread code
References: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
	<1158958212.238667.275240@m7g2000cwm.googlegroups.com>
	<1158998677.988792.268000@i42g2000cwa.googlegroups.com>
Message-ID: <4nq5hnFbie4aU1@individual.net>

seb wrote:

> The best thing would be to have a queue feature that would be be shared
> between processes but as far as I know It does not exists in python.

There is a queue class to share data between threads:

http://docs.python.org/lib/module-Queue.html

-- 
Thomas G?ttler, http://www.thomas-guettler.de/ http://www.tbz-pariv.de/
E-Mail: guettli (*) thomas-guettler + de
Spam Catcher: niemand.leermann at thomas-guettler.de



From bignose+hates-spam at benfinney.id.au  Fri Sep 22 20:29:02 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 23 Sep 2006 10:29:02 +1000
Subject: Strange behaviour of 'is'
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
	<87psdozu2n.fsf@benfinney.id.au>
	<mailman.441.1158899129.10491.python-list@python.org>
	<Xns984654883320Eduncanbooth@127.0.0.1>
	<4513D6F0.2050902@holdenweb.com>
Message-ID: <87mz8rxw6p.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> Perfectly all right: you make the point very well that the behavior is 
> an implementation artifact and not a language feature.

And for those who may be thinking "oh, so I can at least depend on the
behaviour within a particular implementation", that's wrong too:
implementations are free to (and most will) change that behaviour from
one object or assignment to the next, depending on what optimisation
choices are made.

-- 
 \           "He who allows oppression, shares the crime."  -- Erasmus |
  `\                             Darwin, grandfather of Charles Darwin |
_o__)                                                                  |
Ben Finney



From claudio.grondi at freenet.de  Fri Sep  1 13:12:40 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Fri, 01 Sep 2006 19:12:40 +0200
Subject: OO on python real life tutorial?
In-Reply-To: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
Message-ID: <ed9pm5$hmj$1@newsreader2.netcologne.de>

filippo wrote:
> Hello,
> 
> I coded my +10k lines app using Perl/Tk. It is something like a hotel
> software manager, it has a bunch of windows to manage the arrivals,
> bills etc etc. I want to port this on Python/WxPython but I'd like to
> get benefit of python, not just doing a row by row raw porting.
> 
> My problem is that I cannot figure out how OO could be useful in my
> case. 
Be warned, that I am a bit biased here and my opinion is probably not 
mainstream, but I think OO won't be useful in your case, so there is no 
reason to learn about it.
A row by row porting will be ok, but if I were you, I would use probably 
Python/Tk for it in order to avoid programming in wxPython if not really 
necessary (wxPython has its strengths with growing project sizes, but 
yours is still far below the threshold).
Consider it that way: if you cannot figure out how OO could be useful, 
just be more self-confident and accept the enlightenment, that it 
probably or even for sure can't.

Claudio Grondi
Is there a OO tutorial out there to help me?
> 
> Thanks,
> 
> Filippo
> 


From max at alcyone.com  Thu Sep 14 00:12:21 2006
From: max at alcyone.com (Erik Max Francis)
Date: Wed, 13 Sep 2006 21:12:21 -0700
Subject: time-based point system
In-Reply-To: <1158206615.529997.195940@i42g2000cwa.googlegroups.com>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
	<1158205582.339882.23000@i3g2000cwc.googlegroups.com>
	<HM6dnUgt9fG0TJXYnZ2dnUVZ_uydnZ2d@speakeasy.net>
	<1158206615.529997.195940@i42g2000cwa.googlegroups.com>
Message-ID: <JLSdnWgZ4Kc3S5XYnZ2dnUVZ_rKdnZ2d@speakeasy.net>

Jay wrote:

> That function is absolutely no good for this situation.
> 
> 1. Take a small number.
> 5.4348809719085693
> 
> 2. Put it in the function.
> f(5.4348809719085693) = 1/5.4348809719085693
> 
> 3. Get a large number???
> 0.18399666987533483
> 
> That number is even smaller.  I want a large one coming out.

f(x) = 1/x is just one example of a function that has the property of 
being a "negative function" -- the smaller number you put in, the larger 
number you get out, and vice versa.  Your statement didn't clearly 
indicate that the outputs need to be bigger than the inputs, just that 
they need to be bigger the smaller the outputs are.  The more general 
function would be f(x) = A/(x - B).  Choose A and B as desired so that 
f(x) > x for all x you care about.  Or choose another function, like 
f(x) = A - B x or any number of other functions.  There literally are an 
infinite number of possibilities.

The point is, as I've already said, you haven't given nearly enough 
information to give you a useful answer.  You haven't indicated, for 
instance, anything at all about the domain or range of the function that 
you want:  What values do you need to plug in?  What range of values do 
you need to get out?  Once you have clarified to yourself what 
properties you want, that will help you define the function.

At this point you're the only one who knows what properties you want, 
and unless you define them up front, it results in a very unsatisfactory 
guessing game of proposing a function, you telling me what's wrong with 
it, and repeat until either or both of us get bored.

And, by the way, this is a question about mathematics, and so has 
nothing to do specifically with Python.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   Get married, but never to a man who is home all day.
    -- George Bernard Shaw


From tim.golden at viacom-outdoor.co.uk  Sun Sep 17 09:59:09 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: 17 Sep 2006 06:59:09 -0700
Subject: How would you go about creating a heap of shortcuts to a batch
	file?
In-Reply-To: <1158489560.441828.111920@m73g2000cwd.googlegroups.com>
References: <1158489560.441828.111920@m73g2000cwd.googlegroups.com>
Message-ID: <1158501549.608122.99310@e3g2000cwe.googlegroups.com>

googleboy wrote:
> I need to create about 2000 shortcuts to a batch file.
> The shortcuts need to have ...

You need to use the win32com.shell module from pywin32 extensions.
If you search the archives of this group and/or the python-win32
mailing list, you should find several explanations. The best search
term is probably IID_IShellLink.

I've got a Mickey-Mouse module which wraps it and other things here:

http://timgolden.me.uk/python/winshell.html

TJG



From pavlovevidence at gmail.com  Mon Sep  4 07:48:40 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 4 Sep 2006 04:48:40 -0700
Subject: What are super()'s semantics?
In-Reply-To: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
Message-ID: <1157370520.155278.214110@b28g2000cwb.googlegroups.com>

Mike Krell wrote:
> class A(object):
>     def met(self):
>         print "A.met"
>
> class B(A):
>     def met(self):
>         print "B.met"
>         super(B, self).met()
>
> class C(A):
>     def met(self):
>         print "C.met"
>         super(C, self).met()
>
> class D(B,C):
>     def met(self):
>         print "D.met"
>         super(D, self).met()
>
> D().met() # essentially "D B C A"
[snip]

> 2. If I understand correctly, B's MRO is (B, A) and super(B, self) would
>    have an MRO of (A).

This is the source of your misunderstanding.

Essentially, it's objects that have MROs, not classes.  When you create
an object of class D, the MRO of that object is (D,B,C,A), and it
doesn't change, even when you're executing code defined in class B.
Thus, when self is of type D, super(B,self) does not have and MRO of
(A,), but (C,A).  Therefore, super(B,self).__init__() invokes
C.__init__.


Carl Banks



From kent at kentsjohnson.com  Sun Sep 10 17:15:44 2006
From: kent at kentsjohnson.com (Kent Johnson)
Date: Sun, 10 Sep 2006 21:15:44 GMT
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.223.1157856559.5279.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
Message-ID: <4g%Mg.770$5i7.457@newsreading01.news.tds.net>

Dick Moores wrote:
> At 01:10 PM 9/8/2006, Doug Stell wrote:
>> Try www.TextPad.com. I've used it for years and love it. It
>> understands many programming language constructs and can be taught to
>> understand python so that things show up in color.
> 
> Any tips on how to teach TextPad to understand python?

Download and install the Python syntax highlighting definition from the 
TextPad website.

I make a tool to run the front window in Python. Here are the values 
from the preferences window for the tool:

Command: C:\Python24\python.exe
Parameters: -u $File
Init fldr: $FileDir

regex to match output:
^.*"([^"]+)", *line ([0-9]+)

with File: 1, Line: 2

Kent


From rdiaz02 at gmail.com  Thu Sep 14 17:19:05 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Thu, 14 Sep 2006 23:19:05 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>

Sorry, I could not resist, since almost every editor under the sun has
been suggested as the solution, but (X)Emacs only got a minor mention.

On 7 Sep 2006 13:18:22 -0700, Omar <outstretchedarm at hotmail.com> wrote:
> I'd love the perfect editor that would be:
>
> a) free

Emacs does of course qualify here.

>
> b) enable me to drag and drop code snippets from a sort of browser into
> the code

piece of cake; either using shortcuts (wich you can configure) or from
the "Python" menu

>
> c) can run programs right from within

But of course. And, contrary to some others (e.g., JEdit, which I
think forces you to use Jython, so you are stuck with Python 2.1 for
now) you use the current python interpreter you have installed.

And you can run Python, but also many, many, many other things as
well. (For instance, for me it is of great importance that I use an
almost identical way of working when editing/executing Python as when
working with R, and very similar to what I do with LaTeX, C, etc).

>
> d) can edit

Emacs can edit (almost) anything. With syntax highlight and bells and whistles:


>       - PYTHON

Yes, of course

>       - Javascript

I think so (but I stay away from JS)

>       - HTML

Yes

>       - actionscript (since I'm also learning flash)

No idea

>
> e) easy to learn

Well ...that depends on what you mean and on so many other factors (I
mean, why should it be "Ctrl-O" for open instead of "Ctrl-X Ctrl-F"?)

... but honestly, Emacs is probably harder to learn (at the beggining)
than JEdit, or SPE, or UliPad, or Scite, or Eclipse. I've tried all
these others, always to return back to Emacs. Because Emacs is a
general purpose editor, and then some: I find it a lot more flexible
and powerful than any of the alternatives suggested so far. However,
the initial barrier might be too high (keybindings are sometimes an
issue, but there is CUA mode, though I've never used it), and Emacs is
so huge that you never really learn it all (and that might lead to
feeling overwhelmed). And needing emacs lisp for
extending/configuring, well, many people (including myself) do not
find ideal.


However, as has been mentioned here before, choosing an editor is a
very personal thing, where idiosincratic issues can (and should) play
a role. I'd suggest you play with a few, then go for one or two, and
make a point of learning it well: if you spend a lot of time editing
code, learning your main tool is of paramount importance and will
definitely increase your productivity. I think many of the ones
mentioned here (including, but not limited to, SPE, JEdit, UliPad) are
very fine editors.

Best,

R.

P.D: Another very nice editor, which can be extended using Python, is
vim. (But I have little experience with it.)
>
> suggestions?
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From kay.schluehr at gmx.net  Sat Sep 30 05:18:04 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 30 Sep 2006 02:18:04 -0700
Subject: Escapeism
Message-ID: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>

Usually I struggle a short while with \ and either succeed or give up.
Today I'm in a different mood and don't give up. So here is my
question:

You have an unknown character string c such as '\n' , '\a' , '\7' etc.

How do you echo them using print?

print_str( c ) prints representation '\a' to stdout for c = '\a'
print_str( c ) prints representation '\n' for c = '\n'
...

It is required that not a beep or a linebreak shall be printed.

First of all it has be remarked that it is impossible to a certain
extent. That's because e.g. c = '\a' and c = '\7' do represent the same
string but this ambiguity doesn't occur for many numbers. But lets
weaken the requirement and fix a canonical representation in case of
ambiguity. I'm still getting stuck here.



From nick at craig-wood.com  Tue Sep 12 12:30:03 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Tue, 12 Sep 2006 11:30:03 -0500
Subject: best way of testing a program exists before using it?
References: <mailman.362.1158074341.5279.python-list@python.org>
Message-ID: <slrnegdn43.7dl.nick@irishsea.home.craig-wood.com>

Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
>  Also, I just looked at the implementation in posixmodule.c,
>  and at the msdn article on its use, and at a thread in python-dev
>  a year or so ago. The last -- where someone was proposing more
>  specifics if the call fails -- didn't really go anywhere, and is
>  full of people (GvR and others) saying: don't use os.access unless...
> 
>  The msdn article: http://msdn2.microsoft.com/en-us/library/1w06ktdy.aspx
>  doesn't even seem to suggest that checking for executableness is a
>  possibility, and I think that the posixmodule.c code is simply
>  swallowing any non-OK return value and saying: No. (The msdn page
>  suggests that invalid parameters will return EINVAL).
> 
>  All that said, I think the only thing would be to add a line to
>  the docs saying sthg like: This will always return False for X_OK under
>  Win32. I'm happy to submit the patch, but is it worth it?

Wouldn't returning X_OK as true if the file exists be more sensible?
Ie the file might be executable, you'll have to try it, rather than,
no this file is definitely not executable...

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From steve at holdenweb.com  Mon Sep 11 15:14:03 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 20:14:03 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <4505B0AE.6080105@simplistix.co.uk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>
	<ee40io$hno$1@sea.gmane.org> <4505B0AE.6080105@simplistix.co.uk>
Message-ID: <4505B57B.6080509@holdenweb.com>

Chris Withers wrote:
> Steve Holden wrote:
> 
>>> Is there a how-to for this anywhere? The email package's docs are 
>>> short on examples involving charsets, unicode and the like :-(
>>>
>> Well, it would seem like the easiest approach is to monkey-patch the 
>> use of cStringIO to StringIO as recommended and see if that fixes your 
>> problem. Wouldn't it?
> 
> 
> No, not really, since at best that's a nasty (and I meant really nasty) 
> hack. I'm using the email package as part of a library that I'm building 
> which is to be used with various frameworks. Monkey patching modules is 
> about as bad as it gets in that situation...
> 
> At worst, and most likely based on my past experience of (c)StringIO 
> being used to accumulate output, it won't make a jot of difference...
> 
Under those circumstances you probably know best ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden


From esj at harvee.org  Wed Sep 27 13:29:53 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Wed, 27 Sep 2006 13:29:53 -0400
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <451A9E5D.4090301@googlemail.com>
References: <451A9E5D.4090301@googlemail.com>
Message-ID: <451AB511.90101@harvee.org>

Hari Sekhon wrote:
> I have written a script and I would like to ensure that the script is 
> never run more than once at any given time.
> 
> What is the best way of testing and exiting if there is another version 
> of this script running somewhere on this machine?
> 
> I guess what I'm asking is how to handle system processes the way I can 
> in shell. I am running this on linux.

assuming that you're limiting the script to one running instance of a 
given system, I would recommend searching the list archives for a file 
locking discussion of a few weeks ago.  I had made a post suggesting 
portalocker as simple way to achieve file locks.  Somebody else gave a 
really good discussion of a variety of locking techniques.

the basic technique you want is to use some file as a semaphore, lock 
the file, run your script, and unlock on completion.  choose the right 
locking mechanism, and the lock will go away when the process exits 
which helps on cleanup from abnormal terminations.

---eric



From http  Tue Sep 19 10:56:36 2006
From: http (Paul Rubin)
Date: 19 Sep 2006 07:56:36 -0700
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<4na377F9esroU1@uni-berlin.de>
	<mailman.264.1158666512.10491.python-list@python.org>
	<4naeceF9c3hpU2@uni-berlin.de>
Message-ID: <7xk63zhpln.fsf@ruckus.brouhaha.com>

"Diez B. Roggisch" <deets at nospam.web.de> writes:
> > Python stores local variables in an indexed array, but globals in a
> > dictionary. Looking things up by index is faster than looking them up by
> > name.
> 
> Interesting. How is the index computed? I would have assumed that locals()
> is somehow used, which is a dicht.

They're static indexes assigned at compile time.


From steve at holdenweb.com  Wed Sep 13 04:44:11 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 04:44:11 -0400
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
In-Reply-To: <2773CAC687FD5F4689F526998C7E4E5FF1E9B2@au3010avexu1.global.avaya.com>
References: <2773CAC687FD5F4689F526998C7E4E5FF1E9B2@au3010avexu1.global.avaya.com>
Message-ID: <ee8gbk$cnn$1@sea.gmane.org>

Delaney, Timothy (Tim) wrote:
> Antoon Pardon wrote:
> 
> 
>>This is just an idea of mine, nothing I expect python to adapt.
>>But just suppose the language allowed for words in bold. A word
>>in bold would be considered a reserved word, a word in non bold
>>would be an identifier.
> 
> 
> Exactly how am I supposed to use my text editor to make words bold? Is
> every text editor supposed to understand a "python format" for code?
> 
> Besides, I don't like bold for keywords (or anything in code) - I like
> my keywords blue (RGB 0, 0, 255). Of course, with a "python format", I
> could make *my* keywords blue. But I can pretty much guarantee that my
> preferred editor will not ever understand "python format".
> 
This would take us back to the days of Algol 60, where keywords could 
either be "stropped" (with single quotes, IIRC) or in some 
implementations underlined. I believe that Flexowriters had an underline 
key that didn't move the carriage, but it's all a long time ago now.

But I guess we could use the dollar sign to indicate keywords without 
requiring too much of people's editors.

$class$ sample1
	$def$ __init__(self, a, b):
		self.a = a
		self.b = b
	$def$ __cmp__(self, other):
		$return$ self.a.__cmp__(other.a)

Don't see *that* catching on, though ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From peace.is.our.profession at gmx.de  Thu Sep 28 06:33:11 2006
From: peace.is.our.profession at gmx.de (Mirco Wahab)
Date: Thu, 28 Sep 2006 12:33:11 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <mailman.870.1159434346.10491.python-list@python.org>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
Message-ID: <efg8lj$qvq$1@mlucom4.urz.uni-halle.de>

Thus spoke Gabriel Genellina (on 2006-09-28 11:05):

> At Thursday 28/9/2006 05:22, Mirco Wahab wrote:
>> > But, can string formatting be used to convert an integer to its binary
>> > form ?
>>
>>   a = 199
>>   a_bin_str = pack('L', a)

> 
> Notice that the OP was looking for another thing, given the examples. 
> Perhaps a better wording would have been "how to convert an integer 
> to its base-2 string representation".

Yes, you are right. The OP looks for a
'binary (bit) representation ..."
I admit I didn't find out how to format
a value into a bit string in Python.

In Perl, this would be a no-brainer:

  $var = 199;
  $str = sprintf "%0*b", 32, $var;

and str would contain 00000000000000000000000011000111
on a intel machine.

But where is the %b in Python?

Regards & Thanks

Mirco


From deets at nospam.web.de  Mon Sep 25 09:32:15 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 15:32:15 +0200
Subject: Newbie question: PyQt & Form::init()
References: <ef8jbm$l8i$1@newsreader2.netcologne.de>
Message-ID: <4nq42vFbgfogU1@uni-berlin.de>

Sven Ehret wrote:

> Hello List,
> 
> I am trying to learn Python and followed the tutorial at
> http://www.cs.usfca.edu/~afedosov/qttut/. Being happy that it works, I am
> now trying to do my own project, but I am having problems with
> initialization of my form.
> 
> I want to automatically fill a couple of comboboxes upon starting the
> program. I read on the net that I simply have to add a function
> called ?Form1.Init()? with the content I wish to have executed at start
> time. However, it never gets executed, so it seems. When I re-write the
> application to have the code executed at the press of a button, it works.
> What am I doing wrong?

Show us more code, and we show you the problem. At least we can try then,
until someone finally implements

from __future__ import mindreading

Diez


From antroy at gmail.com  Wed Sep 20 15:36:56 2006
From: antroy at gmail.com (Ant)
Date: 20 Sep 2006 12:36:56 -0700
Subject: Python regular expression question!
In-Reply-To: <1158776219.549237.14430@k70g2000cwa.googlegroups.com>
References: <1158771260.946086.312390@b28g2000cwb.googlegroups.com>
	<hbf.20060920g9x@bombur.uio.no>
	<1158776219.549237.14430@k70g2000cwa.googlegroups.com>
Message-ID: <1158781016.400431.56120@i3g2000cwc.googlegroups.com>


unexpected wrote:
> > \b matches the beginning/end of a word (characters a-zA-Z_0-9).
> > So that regex will match e.g. MULTX-FOO but not MULTX-.
> >
>
> So is there a way to get \b to include - ?

No, but you can get the behaviour you want using negative lookaheads.
The following regex is effectively \b where - is treated as a word
character:

pattern = r"(?![a-zA-Z0-9_-])"

This effectively matches the next character that isn't in the group
[a-zA-Z0-9_-] but doesn't consume it. For example:

>>> p = re.compile(r".*?(?![a-zA-Z0-9_-])(.*)")
>>> s = "aabbcc_d-f-.XXX YYY"
>>> m = p.search(s)
>>> print m.group(1)
.XXX YYY

Note that the regex recognises the '.' as the end of the word, but
doesn't use it up in the match, so it is present in the final capturing
group. Contrast it with:

>>> p = re.compile(r".*?[^a-zA-Z0-9_-](.*)")
>>> s = "aabbcc_d-f-.XXX YYY"
>>> m = p.search(s)
>>> print m.group(1)
XXX YYY

Note here that "[^a-zA-Z0-9_-]" still denotes the end of the word, but
this time consumes it, so it doesn't appear in the final captured group.



From g.brandl-nospam at gmx.net  Thu Sep 28 10:23:05 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 28 Sep 2006 16:23:05 +0200
Subject: remove the last character or the newline character?
In-Reply-To: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
References: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
Message-ID: <efglsb$rov$1@news.albasani.net>

Daniel Mark wrote:
> Hello all:
> 
> I have the following snippet:
> 
> In [1]: fileName = 'Perfect Setup.txt\n'
> In [2]: fileName = fileName[0:len(fileName)-1)]   # remove the '\n'
> character
> In [3]: fileName
> Out[3]: 'Perfect Setup.txt'
> 
> Question one:
> Does python provide any function that can remove the last character of
> a string?
> I don't know whether or not the method I used is efficient

fileName = fileName[:-1]

> Question two:
> Does python provide any function that can remove the newline character
> from a string if it exists?

fileName = fileName.rstrip("\n")

though this will remove more than one newline if present. If you only want
to remove one newline, use

if fileName[-1:] == '\n':
     fileName = fileName[:-1]

Georg


From damian at nice.co.nz  Thu Sep 28 15:18:28 2006
From: damian at nice.co.nz (Damian)
Date: 28 Sep 2006 12:18:28 -0700
Subject: XSLT speed comparisons
In-Reply-To: <451BD332.1080505@websafe.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<451BD332.1080505@websafe.com>
Message-ID: <1159471108.337439.147440@m73g2000cwd.googlegroups.com>

Sorry about the multiple posts folks. I suspect it was the "FasterFox"
FireFox extension I installed yesterday tricking me.

I had a brief look at libxml(?) on my Ubuntu machine but haven't run it
on the server.

I'll look into pyrxp Larry.

I have to say I'm struggling a little with the discoverability and
documentation side of things with Python. I realise that
discoverability is purported to be one of its strong sides but coming
from the Visual Studio IDE where Intellisense looks after everything as
you are typing and you can see exactly what methods are available to
what class and what variables are required and why what I've seen so
far is not that flash.

I've installed Eclipse with Pydev (very impressive) on my Linux box and
am using IDLE on Windows and it could just be my lack of familiarity
that is letting me down. Any other IDE recommendations?

I'd be keen to test pyrxp and libxslt but may need help with the code -
I spent literally hours yesterday trying to make a 20-line bit of code
work. To make things worse I started with 4suite in Ubuntu and it
refused to work with an error about not being able to find default.cat
or something. Googled for hours with no luck.

That said, I really want to make the switch and so far Python looks to
be the best choice.

Cheers
Damian



From bearophileHUGS at lycos.com  Fri Sep  8 21:09:55 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 Sep 2006 18:09:55 -0700
Subject: Map with an extra parameter
In-Reply-To: <1157762818.892803.119360@d34g2000cwd.googlegroups.com>
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
	<1157760537.816693.243780@d34g2000cwd.googlegroups.com>
	<1157761277.421434.233500@h48g2000cwc.googlegroups.com>
	<1157761850.196163.323930@e3g2000cwe.googlegroups.com>
	<1157762818.892803.119360@d34g2000cwd.googlegroups.com>
Message-ID: <1157764195.220888.287540@i3g2000cwc.googlegroups.com>

ml1n:
> Looks like someone already did:
> http://mail.python.org/pipermail/python-list/2005-January/259870.html

Don't belive too much in such general timings. Time your specific code
when you think you need a true answer. Timing Python code is very easy
and fast, and sometimes results are surprising.

Bye,
bearophile



From chris.cavalaria at free.fr  Thu Sep 21 12:22:28 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Thu, 21 Sep 2006 18:22:28 +0200
Subject: Python 2.5 WinXP AMD64
In-Reply-To: <4nfrhbFa4kbiU1@individual.net>
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
	<4nfrhbFa4kbiU1@individual.net>
Message-ID: <4512bc3c$0$26036$626a54ce@news.free.fr>

Bjoern Schliessmann a ?crit :
> Christophe wrote:
> 
>> To be exact, you need a 64bit Windows OS on a 64bit cpu.
> 
> Is there a reason that can be explained in a less-than-2-KB
> posting? :) I mean why Python depends on the processor type that
> much.
> 
> Regards,

Easy : a 64bit version of Windows cannot be installed on a non 64bit CPU :)


From ldo at geek-central.gen.new_zealand  Wed Sep 27 00:24:08 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 16:24:08 +1200
Subject: Making search on the other site and getting data and writing in
	xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
Message-ID: <efcube$qht$1@lust.ihug.co.nz>

In message <pan.2006.09.26.05.31.29.232569 at REMOVEME.cybersource.com.au>,
Steven D'Aprano wrote:

> If Google wants to write legal
> contracts that won't stand up in court (speaking as somebody who isn't a
> lawyer and whose legal advice is worthless), they can.

What they define as their terms of service doesn't have to stand up in
court. They're not a public service, after all. If you do something that
they don't like, they are free to try to block you from their servers, they
don't need to appeal to any other authority.

    wget --user-agent="I'm not Microsoft Internet Explorer, I'm Wget" -O - \
        http://www.google.co.nz/search\?q=test


From R.Brodie at rl.ac.uk  Tue Sep  5 12:09:39 2006
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Tue, 5 Sep 2006 17:09:39 +0100
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org><1157381880.697001.260070@m73g2000cwd.googlegroups.com><1157387626.242107.92070@p79g2000cwp.googlegroups.com><1157398593.191972.240270@p79g2000cwp.googlegroups.com><1157422764.573537.116340@m79g2000cwm.googlegroups.com><mailman.7.1157438963.5279.python-list@python.org><7xejuqhh94.fsf@ruckus.brouhaha.com><mailman.20.1157468962.5279.python-list@python.org><edk5ab$eoc$1@south.jnrs.ja.net>
	<mailman.21.1157471042.5279.python-list@python.org>
Message-ID: <edk7g3$fb1$1@south.jnrs.ja.net>


"km" <srikrishnamohan at gmail.com> wrote in message 
news:mailman.21.1157471042.5279.python-list at python.org...

> True, since smartness is a comparison, my friends who have chosen java
> over python for considerations of a true threading support in a
> language are smarter, which makes me a dumbo ! :-)

No, but I think you making unwise assumptions about performance.
You have to ask yourself: is Amdahl's law really hurting me?

In some situations Python could no doubt benefit from fine grained
locking. However, it's likely that scientific programming is not typically
one of them, because most of the heavy lifting is done in C or C++
extensions which can run in parallel if they release the GIL. Or you
are going to use a compute farm, and fork as many worker processes
as you have cores.

You might find these slides from SciPy 2004 interesting:
http://datamining.anu.edu.au/~ole/pypar/py4cfd.pdf








From claird at lairds.us  Tue Sep 12 17:25:54 2006
From: claird at lairds.us (Cameron Laird)
Date: Tue, 12 Sep 2006 21:25:54 +0000
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
Message-ID: <28ljt3-tcq.ln1@lairds.us>

In article <mailman.348.1158066516.5279.python-list at python.org>,
Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
			.
			.
			.
>| I know threads won't help (in CPython at least) so I'm investigating
>| other types of concurrency which I might be able to use. I really like
>| the PyLinda approach
>
>I find it very elegant. I only wish I had some real-world use for it!
			.
			.
			.
Me, too.  I'd love to talk over Linda with other aficionados,
and/or hunt together for an excuse to use her/it.


From Mark.Geyzer at gmail.com  Tue Sep 19 08:09:07 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 19 Sep 2006 05:09:07 -0700
Subject: Formatting device from a script on Windows
In-Reply-To: <1158660534.275633.43240@h48g2000cwc.googlegroups.com>
References: <1158657724.805015.165750@b28g2000cwb.googlegroups.com>
	<1158660534.275633.43240@h48g2000cwc.googlegroups.com>
Message-ID: <1158667747.585634.156370@m73g2000cwd.googlegroups.com>


weir wrote:
> this may help, you need ctypes module.
>
> ##############################
> from ctypes import *
>
> fm = windll.LoadLibrary('fmifs.dll')
>
> def myFmtCallback(command, modifier, arg):
>     print command
>     return 1	# TRUE
>
> FMT_CB_FUNC = WINFUNCTYPE(c_int, c_int, c_int, c_void_p)
>
>
> FMIFS_HARDDISK = 0x0C
> fm.FormatEx(c_wchar_p('H:\\'), FMIFS_HARDDISK, c_wchar_p('NTFS'),
> c_wchar_p('title'), True, c_int(0), FMT_CB_FUNC(myFmtCallback))

Thanks for info, but somehow I am getting "invalid syntax" on this.
What could go wrong?



From filippo2991 at virgilio.it  Fri Sep  1 13:38:13 2006
From: filippo2991 at virgilio.it (filippo)
Date: 1 Sep 2006 10:38:13 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <mailman.10253.1157117413.27775.python-list@python.org>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<mailman.10253.1157117413.27775.python-list@python.org>
Message-ID: <1157132293.732652.195240@m73g2000cwd.googlegroups.com>

Fredrik Lundh ha scritto:
> How many do you need ? ;-)
(snip)

thanks Fredrik,

I know there are plenty of tutorials and manuals. I know what classes,
inheritance and polymorphism are. My problem is that I cannot figure
out how they can help me in my practical problem (my software). The
only things I can imagine is to create some objects like "customer" but
all I can do is to try to force the object to act like my "structured
way of thinking" the problems.

I will read your links, however.

Thanks,

Filippo



From jstroud at mbi.ucla.edu  Sat Sep 16 01:23:16 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 16 Sep 2006 05:23:16 GMT
Subject: Tkinter.Button(... command) lambda and argument problem
In-Reply-To: <1158375749.810421.144120@k70g2000cwa.googlegroups.com>
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
	<1158366884.271106.233500@i3g2000cwc.googlegroups.com>
	<1158368557.990103.222800@k70g2000cwa.googlegroups.com>
	<1158375749.810421.144120@k70g2000cwa.googlegroups.com>
Message-ID: <8TLOg.2260$IA.864@newssvr11.news.prodigy.com>

Dustan wrote:
> Jay wrote:
> 
>>Thanks for the tip, but that breaks things later for what I'm doing.
>>
>>bearophileHUGS at lycos.com wrote:
>>
>>>In that case you don't need a lambda:
>>>
>>>import Tkinter as tk
>>>
>>>class Test:
>>>    def __init__(self, parent):
>>>        buttons = [tk.Button(parent, text=str(x+1),
>>>command=self.highlight(x)) for x in range(5)]
>>>        for button in buttons:
>>>            button.pack(side=tk.LEFT)
> 
> 
> Well, actually, that's wrong. You obviously don't understand why lambda
> is necessary for event binding; in this case (and many others, for that
> matter), the button gets bound to the event *returned* by
> self.highlight(x), which, since nothing gets returned, would be None.
> Then when you click the button, Tkinter calls None(), and out of the
> blue, an error is raised.
> 
> Lambda is the safe way around that error.
> 
> 
>>>    def highlight(self, x):
>>>        print "highlight", x
>>>
>>>root = tk.Tk()
>>>d = Test(root)
>>>root.mainloop()
>>>
>>>Bye,
>>>bearophile
> 
> 

Actually, lambda is not necessary for event binding, but a closure (if I 
have the vocab correct), is:

import Tkinter as tk

def make_it(x):
   def highliter(x=x):
     print "highlight", x
   return highliter

class Test:
     def __init__(self, parent):
         buttons = [tk.Button(parent, text=str(x+1),
                    command=make_it(x)) for x in range(5)]
         for button in buttons:
             button.pack(side=tk.LEFT)

root = tk.Tk()
d = Test(root)
root.mainloop()


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From bdesth.quelquechose at free.quelquepart.fr  Sun Sep 10 17:49:06 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sun, 10 Sep 2006 23:49:06 +0200
Subject: Method resolution for super(Class, obj).
In-Reply-To: <var0g2phcfvru0jtf9jjcinaettiocib05@4ax.com>
References: <49h0g2t0rni9mk4gs3o8baqgr66q1847es@4ax.com>
	<1157650974.472127.47470@h48g2000cwc.googlegroups.com>
	<var0g2phcfvru0jtf9jjcinaettiocib05@4ax.com>
Message-ID: <45048533$0$23410$636a55ce@news.free.fr>

ddtl a ?crit :
> On 7 Sep 2006 10:42:54 -0700, in comp.lang.python you wrote:
> 
> 
>>Let's examine what the mro order is for class D:
>>
>>>>>D.mro()
>>
>>[<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>,
>><class '__mai
>>n__.A'>, <type 'object'>]
>>
>>When you call d.met(), the call dispatches to the D.met() method.
>>After printing out 'D.met', you use super() to get the next class in
>>the mro order, and call that class's met method.
>>
>>As shown with the mro(), the class after D is B.  So B.met() is called.
>>Normally, we would be done.  But take a look at B's method!
>>
>>
>>>class B(A):
>>>    def met(self):
>>>        print 'B.met'
>>>        super(B,self).met()
>>
>>B.met calls super, and invokes the next met method!  So, the code does
>>exactly what you've asked it to do, and searches for the next class
>>after B in the mro list: class C.
> 
> 
> But when super(B,self).met() is invoked, isn't it supposed to look
> at MRO order of *B*, 

No. It's supposed to look at the MRO of self for what comes after B.



From willie at jamots.com  Mon Sep 25 02:37:58 2006
From: willie at jamots.com (willie)
Date: Mon, 25 Sep 2006 01:37:58 -0500
Subject: unicode, bytes redux
Message-ID: <45177946.1020005@jamots.com>

(beating a dead horse)

Is it too ridiculous to suggest that it'd be nice
if the unicode object were to remember the
encoding of the string it was decoded from?
So that it's feasible to calculate the number
of bytes that make up the unicode code points.

# U+270C
# 11100010 10011100 10001100
buf = "\xE2\x9C\x8C"

u = buf.decode('UTF-8')

# ... later ...

u.bytes() -> 3

(goes through each code point and calculates
the number of bytes that make up the character
according to the encoding)


From sigzero at gmail.com  Tue Sep 12 21:05:31 2006
From: sigzero at gmail.com (Robert Hicks)
Date: 12 Sep 2006 18:05:31 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <1158104598.658388.241640@d34g2000cwd.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
	<1158104598.658388.241640@d34g2000cwd.googlegroups.com>
Message-ID: <1158109531.828274.53810@i42g2000cwa.googlegroups.com>


metaperl wrote:
> Istvan Albert wrote:
> > metaperl wrote:
> > > -->  python -i
> > > >>> class = "algebra"
> > >   File "<stdin>", line 1
> > >     class = "algebra"
> > >           ^
> > > SyntaxError: invalid syntax
> >
> > Designing a syntax to avoid all possible newbie errors is impractical
> > because as soon as you are finished with one iteration the new newbies
> > will start making different kinds of errors...
>
> You are missing the point: the point is that the above could be
> considered correct if the rules of Python were that an assignment
> statement takes
> IDENTIFIER '=' LVALUE
>
> Also  "class" IDENTIFIER COLON could also be considered correct.
>

Yes it could but it isn't and isn't likely to be. Simply do not use
reserved words. That rule is hardly limited to Python.

Robert



From bj_666 at gmx.net  Fri Sep  1 04:09:20 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 01 Sep 2006 10:09:20 +0200
Subject: ANN: GMPY binaries for Windows 2.5
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
Message-ID: <pan.2006.09.01.08.09.20.737216@gmx.net>

In <1157093919.661517.45590 at e3g2000cwe.googlegroups.com>, casevh wrote:

Interesting subject line.  I think I still have a set of "Win 3.11 for
workgroups" disks lying around somewhere, but where do I get Windows 2.5? ;-)

SCNR,
	Marc 'BlackJack' Rintsch


From chris.cavalaria at free.fr  Thu Sep 14 07:54:41 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Thu, 14 Sep 2006 13:54:41 +0200
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
Message-ID: <450942ea$0$1768$636a55ce@news.free.fr>

John Henry a ?crit :
> Hi list,
> 
> Just to make sure I understand this.
> 
> Since there is no "pointer" type in Python, I like to know how I do
> that.
> 
> For instance, if I do:
> 
>    ...some_huge_list is a huge list...
>    some_huge_list[0]=1
>    aref = some_huge_list
>    aref[0]=0
>    print some_huge_list[0]
> 
> we know that the answere will be 0.  In this case, aref is really a
> reference.
> 
> But what if the right hand side is a simple variable (say an int)?  Can
> I "reference" it somehow?  Should I assume that:
> 
>    aref = _any_type_other_than_simple_one
> 
> be a reference, and not a copy?
> 
> Thanks,
> 

That's easy. In Python, every variable is a depth one pointer. Every 
variable is of the type (PyObject*)

Of course, since numbers and strings are immutable, that pointer is 
useless to push back the modifications you've done.

You need a PyObject** ? Use a one element list instead and manipulate it 
like that : number_ref[0] = new_value
instead of that : number_ref = [new_value]



From bdesth.quelquechose at free.quelquepart.fr  Sat Sep  9 14:38:39 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 09 Sep 2006 20:38:39 +0200
Subject: Building Python Based Web Application
In-Reply-To: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
Message-ID: <4503071e$0$27248$636a55ce@news.free.fr>

James Stroud a ?crit :
> Hello All,
> 
> I am interested in setting up a modest invoicing system for some 
> consulting I am doing. I like the idea of managing this on the web and 
> creating invoices and printing them from a browser. However, I'm not 
> really sure where to start. I've played with some CMS applications, but 
> they seem more for blogging (mamba, wordpress, etc.). Ideally, I would 
> like to interface with mySQL (or whatever the favorite web-flavor 
> database app is these days). I would like to be able to use my python 
> skills.
> 
> I confident that if I set out to write this from scatch, I will be 
> seriously re-inventing the wheel, perhaps several times over.
> 
> So, my question is, does anyone know of a book and/or some kind of 
> framework that would make the best sense for what I am describing here? 

Web-base front-end to a SQL database... Pylons, Turbogears or Django 
comes to mind. Or a custom-made stack (see link below)...

> I've heard of Zope, but I would like to make sure its appropriate for 
> the job before I spend 2 or 3 days getting acquainted with it. 

Lol. Make it 2 or 3 monthes. And before you loose your time: Zope is 
certainly not the best choice here.

> I'm adept 
> at HTML, python, CSS, python-CGI, and interfacing with mySQL through 
> DBI. I'm sure I could get something to work with these skills, but I 
> want to minimize wheel re-invention as much as possible.
> 
> Basically, I want a jump start on data-base oriented web development 
> with a focus on applying my python skills.
> 
> Any suggestions will be greatly appreciated.

This serie of articles may be of interest to you:
http://adminspotting.net/building-web-pages-with-python/

HTH


From http  Wed Sep  6 03:20:18 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 00:20:18 -0700
Subject: threading support in python
References: <4klub9Fcqv5kU1@individual.net>
	<1155932094.617287.84980@i3g2000cwc.googlegroups.com>
	<1155933754.114724.250180@i3g2000cwc.googlegroups.com>
	<gTqFg.16305$o27.3834@newssvr21.news.prodigy.com>
	<4knq9hFctlsuU1@individual.net>
	<1156001501.741149.162810@h48g2000cwc.googlegroups.com>
	<PsJFg.66833$u11.21481@tornado.ohiordc.rr.com>
	<1157214620.847062.68090@b28g2000cwb.googlegroups.com>
	<1157409631.751524.99560@b28g2000cwb.googlegroups.com>
	<1157469825.184895.176080@d34g2000cwd.googlegroups.com>
	<7xbqptdeeo.fsf@ruckus.brouhaha.com>
	<1157526559.277945.58530@m73g2000cwd.googlegroups.com>
Message-ID: <7xirk131hp.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > Part of the win of programming in Python instead of C is having the
> > language do memory management for you--no more null pointers
> > dereferences or malloc/free errors.  Using shared memory puts all that
> > squarely back in your lap.
> 
> Huh?  Why couldn't you use garbage collection with objects allocated in
> shm?  The worst theoretical case is about the same programatically as
> having garbage collected objects in a multithreaded program.

I'm talking about using a module like mmap or the now-AWOL shm module,
which gives you a big shared byte array that you have to do your own
memory management in.  POSH is a slight improvement over this, since
it does its own ref counting, but that is slightly leaky, and POSH has
to marshal every object into the shared area.  

> Python doesn't actually support that as of yet, but it could.

Well, yeah, with a radically different memory system that's even
more pie in the sky than the GIL and refcount removal that we've
been discussing.

> In the interim, if the memory you're sharing is array-like then you
> can already take full advantage of multiprocess solutions in Python.

But then you're back to doing your own memory management within that
array.  Sure, that's tolerable for some applications (C programmers do
it for everything), but not exactly joy.  

And as already mentioned, the stdlib currently gives no way to
implement shared memory locks (file locks aren't the same thing).
POSH and the old shm library do, but POSH is apparently not that
reliable, and nobody knows what happened to shm.


From gabrielg_laburando at yahoo.com.ar  Fri Sep  1 14:07:25 2006
From: gabrielg_laburando at yahoo.com.ar (Gabriel G)
Date: Fri, 01 Sep 2006 15:07:25 -0300
Subject: a question about ftplib
In-Reply-To: <20060901093258.80272.qmail@web56506.mail.re3.yahoo.com>
References: <7.0.1.0.0.20060831120404.05176720@yahoo.com.ar>
	<20060901093258.80272.qmail@web56506.mail.re3.yahoo.com>
Message-ID: <7.0.1.0.0.20060901143111.01141150@yahoo.com.ar>

At Friday 1/9/2006 06:32, alper soyler wrote:

>Thank you very much for your help. The program works however, after 
>downloading 121 '.pep' files, it gave me time out error:
>
>Traceback (most recent call last):
>   File "ftp1.0.py", line 18, in ?
>     for filename in ftp.nlst():
>   ...
>   File "/usr/lib/python2.4/ftplib.py", line 324, in ntransfercmd
>     conn.connect(sa)
>   File "<string>", line 1, in connect
>socket.error: (110, 'Connection timed out')
>
>How can I continue from the last download or  is there any way to 
>arrange the time? Thank you very much.

You can change the default timeout for sockets with 
socket.setdefaulttimeout(secs) (this is a module function; call it at 
the beginning of your script).
To continue from the last download, you could skip downloading files 
when they already exist on your disk: before opening it for write, 
use os.path.exists(full_filename) to detect it, and skip the download part.

If you want to continue even after an exception happens, use the 
try/except syntax.
I don't have your code at hand to show the details, but it was something like:

for directory in dirlist:
     cwd(directory)
     for filename in directory:
         download file

You may want to change it to:

for directory in dirlist:
     try:
       cwd(directory)
       for filename in directory:
         if (filename already exists): continue
         try:
           download file
         except: print '%s: %s' % sys.exc_info()[:2]
     except: print '%s: %s' % sys.exc_info()[:2]

This way, if an error happens within downloading a file, goes on the 
next; and if an error happens procesing a directory, goes on the next too.
As a general guide, bare except clauses (that is, without a matching 
exception class) are not good, but for an utility script like yours I 
think it's fine.


Gabriel Genellina
Softlab SRL  


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From chris at kateandchris.net  Thu Sep 14 16:15:37 2006
From: chris at kateandchris.net (Chris Lambacher)
Date: Thu, 14 Sep 2006 16:15:37 -0400
Subject: latex openoffice converter
In-Reply-To: <eec71v$ts2$1@sea.gmane.org>
References: <eec71v$ts2$1@sea.gmane.org>
Message-ID: <20060914201537.GA20270@kateandchris.net>

http://latex2rtf.sourceforge.net/

-Chris

On Thu, Sep 14, 2006 at 08:29:19PM +0200, Fabian Braennstroem wrote:
> Hi,
> 
> I would like to use python to convert 'simple' latex
> documents into openoffice format. Maybe, anybody has done
> something similar before and can give me a starting point!?
> Would be nice to hear some hints!
> 
> Greetings!
>  Fabian
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list


From MonkeeSage at gmail.com  Tue Sep 12 03:50:11 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 12 Sep 2006 00:50:11 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1158045341.284783.321210@h48g2000cwc.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>
	<mailman.302.1158018336.5279.python-list@python.org>
	<1158045341.284783.321210@h48g2000cwc.googlegroups.com>
Message-ID: <1158047411.532903.68760@e3g2000cwe.googlegroups.com>


Oops! Sorry for the top-post!



From onurb at xiludom.gro  Mon Sep  4 13:07:36 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 04 Sep 2006 19:07:36 +0200
Subject: methods and functions, instances and classes
In-Reply-To: <y%VKg.3084$%k5.2240@trnddc08>
References: <y%VKg.3084$%k5.2240@trnddc08>
Message-ID: <44fc5d59$0$975$626a54ce@news.free.fr>

David Isaac wrote:
> When I create an instance of a class,
> are the class's functions *copied* to create the methods?

No, unless you explicitely do it.

> Or are method calls actually calls of the class's functions?

Depends on how the method was associated to the instance (you can set
methods on a per-instance property), but in the general case (functions
defined in the class body), yes.

> I am sure this is both obvious

I once had the same question when I was learning computers and programming.

> and FAQ,

Not AFAIK.

> but I did not find a clear answer
> (e.g. here
> http://docs.python.org/tut/node11.html#SECTION0011340000000000000000 ,
> a lot turns on the meaning of 'equivalent'.)


"""
If the name denotes a valid class attribute that
is a function object, a method object is created by packing (pointers
to) the instance object and the function object just found together in
an abstract object: this is the method object. When the method object is
called with an argument list, it is unpacked again, a new argument list
is constructed from the instance object and the original argument list,
and the function object is called with this new argument list.
"""

IOW, a method object is a callable object keeping references to both the
instance and the function (note the "(pointers to) ... the function
object").

You could represent yourself the method as something like:

class Method(object):
  def __init__(self, im_func, im_self):
    self.im_self = obj
    self.im_func = func

  def __call__(self, *args, **kw):
    return self.im_func(self.im_self, *args, **kw)

Now suppose that the 'function' type definition (yes, Python functions
are objects) looks a bit like this:

class function(object):
    . . .
    def __get__(self, obj):
        return Method(self, obj)


And that looking up an attribute on an instance looks like this (dumbed
down of course):

def __getattribute__(self, name):
  if name in self.__dict__:
    return self.__dict__[name]
  elif hasattr(self.__class__, name)
    attrib = getattr(self.__class__, name)
    if hasattr(attrib, '__get__'):
      return attrib.__get__(self)
    else:
      return attrib
  else:
    raise AttributeError("object %s has no attribute %s" % (self, name)


Then for :

class Foo(object):
  def bar(self, val):
    return "%s %s" % (self, val)

foo = Foo()

Looking up 'bar' on 'foo':
bar = foo.bar

would resolve, thru __getattribute__ etc, to:
bar = Method(Foo.bar, foo)

Which, if then called, would resolve to
Foo.bar(foo, 42)



NB : reading the doc about new-style classes and the descriptor protocol
may help:
http://www.python.org/download/releases/2.2.3/descrintro/
http://users.rcn.com/python/download/Descriptor.htm

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From fakeaddress at nowhere.org  Fri Sep  8 19:09:18 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 08 Sep 2006 23:09:18 GMT
Subject: mysqldb + multi-threading
In-Reply-To: <mailman.177.1157747400.5279.python-list@python.org>
References: <0piMg.136445$LF4.125458@dukeread05>	<24kMg.11472$q63.11207@newssvr13.news.prodigy.com>
	<mailman.177.1157747400.5279.python-list@python.org>
Message-ID: <yKmMg.7783$tU.2787@newssvr21.news.prodigy.com>

skip at pobox.com wrote:
>     Bryan> MySQL has its own process. It doesn't know nor care whether your
>     Bryan> application makes connections from different processes or
>     Bryan> different threads in the same process.
> 
> Yes, but on the client side the data structures may or may not be
> thread-safe.

I was responding to the text I quoted immediately above it:
"I saw in another thread that some db engines did have issues
with being called from threads." He is right about that,  but
it's not a problem given what he said he's using.

>   A session on my web server:
> 
>     [skip at orca ~]$ python
>     Python 2.3.4 (#1, Mar 10 2006, 06:12:09)
>     [GCC 3.4.5 20051201 (Red Hat 3.4.5-2)] on linux2
>     Type "help", "copyright", "credits" or "license" for more information.
>     >>> import MySQLdb
>     >>> MySQLdb.threadsafety
>     1
>     >>> MySQLdb.version_info
>     (1, 1, 7, 'final', 1)
> 
> Looking up threadsafety in PEP 249 we see:
> 
>     threadsafety
> 
>         Integer constant stating the level of thread safety the
>         interface supports. Possible values are:
> 
>             0     Threads may not share the module.
>             1     Threads may share the module, but not connections.
>             2     Threads may share the module and connections.
>             3     Threads may share the module, connections and
>                   cursors.
> 
> So if you want to use multiple threads they can't share connections.

I don't see how multiple processes could share connections
either.

>     >> My gut feeling is to use threads (note: each transaction is finite,
>     >> so the process/thread die fairly quickly).
> 
>     Bryan> Go with your gut. Python threads are reasonably portable, and
>     Bryan> work well on modern MS-Windows.
> 
> Maybe ignore your gut and read the documentation. ;-)

What in the documentation do you think answers the question?


-- 
--Bryan



From eric_brunel at despammed.com  Thu Sep 21 05:55:56 2006
From: eric_brunel at despammed.com (Eric Brunel)
Date: Thu, 21 Sep 2006 11:55:56 +0200
Subject: Python and CORBA
References: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
Message-ID: <op.tf727isjrqur0o@eb.pragmadev>

On Thu, 21 Sep 2006 10:48:55 +0200, rodmc <userprogoogle-139 at yahoo.co.uk>  
wrote:

> Can anyone recommend an easy to install COBRA implementation which
> works with Python? I am using Windows XP.

I used to use fnorb (http://sourceforge.net/projects/fnorb), but the  
project seems to be dead. It still seems to work quite well, but I didn't  
test it on the latest Python versions.

And it does meet your requirements: since it's a Python-only ORB, it's  
really easy to install. You basically just have to put it somewhere in  
your PYTHONPATH.

> Thanks in advance.

HTH
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From defcon8 at gmail.com  Thu Sep  7 13:48:21 2006
From: defcon8 at gmail.com (defcon8)
Date: 7 Sep 2006 10:48:21 -0700
Subject: Printing Documents
Message-ID: <1157651301.622295.165810@d34g2000cwd.googlegroups.com>

How can I print html documents in Python on Windows?



From srikrishnamohan at gmail.com  Mon Sep 11 07:39:40 2006
From: srikrishnamohan at gmail.com (km)
Date: Mon, 11 Sep 2006 17:09:40 +0530
Subject: Ann: CoreBio 0.4
In-Reply-To: <f4cc03640609110435v48805f37x3dd6c2c62f554bc2@mail.gmail.com>
References: <1157961570.253884.44940@d34g2000cwd.googlegroups.com>
	<f4cc03640609110435v48805f37x3dd6c2c62f554bc2@mail.gmail.com>
Message-ID: <f4cc03640609110439i108b8aa1re42fc2fee301cfc6@mail.gmail.com>

Hi,
why are u reinventing the wheel when Biopython[1] is already existing ? is
there any specific reason u wanted to develop this CoreBio ? why dont u just
extend the existing BioPython package itself ?
regards,
KM
[1]http://biopython.org
-------------------------------------------------------------------------------
On 9/11/06, km <srikrishnamohan at gmail.com> wrote:
>
> On 11 Sep 2006 00:59:30 -0700, GavinCrooks at gmail.com
> <GavinCrooks at gmail.com> wrote:
> >
> > Announcing CoreBio 0.4
> > ------------------------
> > CoreBio home page:
> >     http://code.google.com/p/corebio/
> >
> > Download:
> >     http://corebio.googlecode.com/svn/dist/CoreBio-0.4.1.tar.gz
> >
> > CoreBio is an open source python library for bioinformatics and
> > computational biology, designed to be fast, compact, reliable and easy
> > to use. Currently, CoreBio includes code to store and manipulate
> > protein and DNA sequences, read and write many common biological
> > sequence formats, read blast reports and access other computational and
> > database resources.
> >
> > The CoreBio project welcomes additional suggestions, code and
> > participants.
> >
> > This release includes the following modules:
> >
> >     - data: Standard information used in computational biology.
> >     - matrix: Arrays indexed by alphabetic strings.
> >     - moremath: Various bits of useful math not in the standard
> >
> >                 python library.
> >     - resource: Access to programs, complex file formats and
> >                 databases
> >         - astral: ASTRAL dataset IO.
> >         - scop: SCOP: Structural Classification of Proteins IO.
> >         - stride: STRIDE: Protein secondary structure assignment
> >
> >                 from atomic coordinates.
> >     - seq: Alphabetic sequences and associated tools and data.
> >     - seq_io: Sequence file reading and writing.
> >         - array_io: Read and write arrays of sequence data.
> >         - clustal_io: Read the CLUSTAL sequence file format.
> >         - fasta_io: Read and write FASTA format.
> >         - genbank_io: Read GenBank flat files.
> >         - intelligenetics_io: Read IntelliGenetics format.
> >         - msf_io: Read sequence information in MSF format.
> >         - nbrf_io: Sequence IO for NBRF/PIR format.
> >         - nexus_io: Read the sequence data from a nexus file.
> >         - null_io: Null sequence IO.
> >         - phylip_io: Read Sequences in interleaved Phylip format.
> >         - plain_io: Read and write raw, unformatted sequence data.
> >         - stockholm_io: Read a STOCKHOLM format.
> >         - table_io: Read  tab delimited format.
> >     - ssearch_io: Parse sequence search analysis reports.
> >         - blastxml: Read BLAST XML output.
> >         - fasta: Read the output of a fasta similarity search.
> >     - transform: Transformations of Seqs (alphabetic sequences),
> >             including translation with a full suite of
> >             GeneticCode's.
> >
> >
> > Gavin Crooks and John Gilman
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> >
>
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From michiel at thingmajig.org  Sat Sep 30 17:21:56 2006
From: michiel at thingmajig.org (Michiel Sikma)
Date: Sat, 30 Sep 2006 23:21:56 +0200
Subject: "Wiki in 10 minutes"
Message-ID: <C81EEA2F-26E2-4AB0-928D-751280C6E460@thingmajig.org>

Hello everybody.

I recently had a bit of data loss and, among some other minor things,  
lost my bookmarks. I once bookmarked this video tutorial which  
allegedly showed how to make a wiki in 10 minutes with some Python  
network framework. Does anybody know which one it might have been?  
I've been meaning to do it for some time now.

Any other links pertaining to the creation of web applications with  
Python, which I'm only just getting into, would also be appreciated.  
Thanks!

Michiel Sikma
michiel at thingmajig.org





From deets at nospam.web.de  Tue Sep 19 04:16:36 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 10:16:36 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <eeo2bh$q6$1@news.albasani.net>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
	<eeo2bh$q6$1@news.albasani.net>
Message-ID: <4n9nb4F99lbqU2@uni-berlin.de>

>>
>> I think '__metaclass__ = whatever' affects only the creation of 
>> classes that
>> would otherwise be old-style classes?
> 
> Wrong.
> 
> If you set __metaclass__ = type, every class in that module will be 
> new-style.
> 
> If you set __metaclass__ = MyClass, and MyClass inherits from <type>, every
> class in that module will be new-style and have MyClass as a metaclass.
> 
> The usual way to create new-style classes, inheriting from object or 
> another
> new-style class, works because if no __metaclass__ is defined, the first
> base class's class is taken as the metaclass.


I was under that impression, too. But this behaves different (py2.4):


---- test.py ----
class meta(type):
     def __new__(*args):
         print args
         return type(*args[1:])

__metaclass__ = meta

class OldStyle:
     pass

class NewStyle(object):
     #__metaclass__ = meta

     pass



---- test.py ----

deets$ python2.4 /tmp/test.py
(<class '__main__.meta'>, 'OldStyle', (), {'__module__': '__main__'})
deets$

I was astonished to see that. Any explanation?

Diez


From enleverlesX.XmcX at XmclaveauX.com  Wed Sep  6 14:04:32 2006
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI)
Date: Wed, 6 Sep 2006 20:04:32 +0200
Subject: New 2.5 release date: September 19
References: <92jLg.2727$No6.53442@news.tufts.edu>
Message-ID: <44ff0dcb$0$5114$ba4acef3@news.orange.fr>

September 19?    Okay !   Which year?

Apologies: only for LOL....






From tofijoy at yahoo.co.in  Thu Sep 21 17:20:46 2006
From: tofijoy at yahoo.co.in (Fijoy George)
Date: Thu, 21 Sep 2006 16:20:46 -0500
Subject: Strange behaviour of 'is'
Message-ID: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>

Hi all,

I am a bit perplexed by the following behaviour of the 'is' comparator

>>> x = 2.
>>> x is 2.
False
>>> y = [2., 2.]
>>> y[0] is y[1]
True

My understanding was that every literal is a constructure of an object. 
Thus, the '2.' in 'x = 2.' and the '2.' in 'x is 2.' are different objects. 
Therefore, the comparison yields false.

But my understanding does not explain the result of the second comparison. 
According to the experiment, y[0] and y[1] are the same object!

Does anyone know an explanation for this?

Thank you very much
Fijoy 




From paul at boddie.org.uk  Wed Sep 13 05:36:36 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 13 Sep 2006 02:36:36 -0700
Subject: egg and modpython
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
	<1157969582.029638.136340@i42g2000cwa.googlegroups.com>
	<45066f21$0$28612$636a55ce@news.free.fr>
	<1158058488.037703.263280@e63g2000cwd.googlegroups.com>
	<4506d25e$0$12791$626a54ce@news.free.fr>
Message-ID: <1158140196.498559.278950@i42g2000cwa.googlegroups.com>

Bruno Desthuilliers wrote:
>
> AFAIK, jar files don't include native dynamic libs... But I'm not a Java
> expert (happily forgot most of what I used to know about this language).

I can't be bothered to read the specification to say what is allowed in
.jar files, but .war files frequently get unpacked by various
application servers either for efficiency reasons or in order to access
resources that have to be processed. Whether such software is badly
designed or not (eg. the horror of Oracle Containers for Java), there's
a precedent for such behaviour that needs to be reviewed continuously.

[...]

> Yes, true. But I'd still say that it's more a problem of proper
> packaging (ie, an egg with dynamic libs inside should better not be
> packaged as 'zip-safe') than a bug in the eggs system itself.

There's always going to be an issue of how much you need to know in
order to be able to package stuff effectively. With Debian packaging,
there's a culture around this with a moderately steep learning curve;
with distutils, a simple script is often enough for a Python-only
package, but various strangely defined options for installing scripts,
data and programs cause the learning curve to point more steeply
upwards. I imagine that providing native code libraries can be even
more of a hassle, but at such a point setuptools should really start to
help out and detect the situations where compressed .egg files have to
be unpacked.

But returning briefly to my point about what setuptools and its
associates should be used for, I think the following message sums up
one side of the conflicting demands made upon it:

http://mail.python.org/pipermail/python-dev/2004-October/049572.html

Because one platform has no package manager, people reach for the
closest solution, inflicting a (meta)package format on everyone else.
Attempts to make distutils work with .deb files seem to have stalled,
and I don't buy the "awkward Debian" argument that some suggest is the
reason for this. It's more likely that the metapackage format in
question isn't expressive enough to get the job done.

Paul



From ldo at geek-central.gen.new_zealand  Tue Sep 26 07:10:53 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 23:10:53 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz> <efaknl$867$2@news.albasani.net>
	<efakui$idf$4@lust.ihug.co.nz> <efate6$ilf$1@news.albasani.net>
Message-ID: <efb1q3$a43$2@lust.ihug.co.nz>

In message <efate6$ilf$1 at news.albasani.net>, Georg Brandl wrote:

> Lawrence D'Oliveiro wrote:
>> In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:
>> 
>>> Lawrence D'Oliveiro wrote:
>>>> In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M
>>>> wrote:
>>>> 
>>>>> Lawrence is right that the escape method doesn't work the way he
>>>>> expects it to.
>>>>> 
>>>>> Rewriting a library module simply because a developer is surprised is
>>>>> a *very* bad idea.
>>>> 
>>>> I'm not surprised. Disappointed, yes. Verging on disgust at some
>>>> comments in this thread, yes. But "surprised" is what a lot of users of
>>>> the existing cgi.escape function are going to be when they discover
>>>> their code isn't doing what they thought it was.
>>> 
>>> Why should they be surprised? The documentation states clearly what
>>> cgi.escape() does (as does the docstring).
>> 
>> Documentation frequently states stupid things. Doesn't mean it should be
>> treated as sacrosanct.
> 
> That's not the point. The point is that someone using cgi.escape() will
> hardly be surprised of what it does and doesn't do.

And this surprise, or lack of it, is relevant to the argument how, exactly?


From walter at livinglogic.de  Mon Sep 25 12:50:20 2006
From: walter at livinglogic.de (=?ISO-8859-1?Q?Walter_D=F6rwald?=)
Date: Mon, 25 Sep 2006 18:50:20 +0200
Subject: unicode, bytes redux
In-Reply-To: <pan.2006.09.25.09.16.56.874481@REMOVEME.cybersource.com.au>
References: <mailman.552.1159166294.10491.python-list@python.org>	<7xy7s8crty.fsf@ruckus.brouhaha.com>
	<pan.2006.09.25.09.16.56.874481@REMOVEME.cybersource.com.au>
Message-ID: <451808CC.3010901@livinglogic.de>

Steven D'Aprano wrote:
> On Mon, 25 Sep 2006 00:45:29 -0700, Paul Rubin wrote:
> 
>> willie <willie at jamots.com> writes:
>>> # U+270C
>>> # 11100010 10011100 10001100
>>> buf = "\xE2\x9C\x8C"
>>> u = buf.decode('UTF-8')
>>> # ... later ...
>>> u.bytes() -> 3
>>>
>>> (goes through each code point and calculates
>>> the number of bytes that make up the character
>>> according to the encoding)
>> Duncan Booth explains why that doesn't work.  But I don't see any big
>> problem with a byte count function that lets you specify an encoding:
>>
>>      u = buf.decode('UTF-8')
>>      # ... later ...
>>      u.bytes('UTF-8') -> 3
>>      u.bytes('UCS-4') -> 4
>>
>> That avoids creating a new encoded string in memory, and for some
>> encodings, avoids having to scan the unicode string to add up the
>> lengths.
> 
> Unless I'm misunderstanding something, your bytes code would have to
> perform exactly the same algorithmic calculations as converting the
> encoded string in the first place, except it doesn't need to store the
> newly encoded string, merely the number of bytes of each character.
> 
> Here is a bit of pseudo-code that might do what you want:
> 
> def bytes(unistring, encoding):
>     length = 0
>     for c in unistring:
>         length += len(c.encode(encoding))
>     return length

That wouldn't work for stateful encodings:

>>> len(u"abc".encode("utf-16"))
8
>>> bytes(u"abc", "utf-16")
12

Use a stateful encoder instead:

import codecs
def bytes(unistring, encoding):
    length = 0
    enc = codecs.getincrementalencoder(encoding)()
    for c in unistring:
        length += len(enc.encode(c))
    return length

Servus,
   Walter


From chrisBrat at gmail.com  Mon Sep  4 08:51:54 2006
From: chrisBrat at gmail.com (Chris Brat)
Date: 4 Sep 2006 05:51:54 -0700
Subject: Better way to replace/remove characters in a list of strings.
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
	<edh04n$o0g$1@news.lrz-muenchen.de>
	<1157367752.806830.317400@m79g2000cwm.googlegroups.com>
Message-ID: <1157374314.068280.302480@e3g2000cwe.googlegroups.com>

Thanks, thats exactly what I was looking for - very neat.


George Sakkis wrote:
> Philipp Pagel wrote:
>
> > Chris Brat <chrisBrat at gmail.com> wrote:
> > > Is there a better way to replace/remove characters (specifically ' and
> > > " characters in my case, but it could be anything) in strings in a
> > > list, than this example to replace 'a' with 'b':
> >
> > x = map(lambda foo: foo.replace('a', 'b'), x)
>
> Or more pythonically:
> 
> x = [s.replace('a', 'b') for s in x]
> 
> George



From aahz at pythoncraft.com  Mon Sep 25 09:29:41 2006
From: aahz at pythoncraft.com (Aahz)
Date: 25 Sep 2006 06:29:41 -0700
Subject: Timeline for Python?
References: <mailman.497.1159035007.10491.python-list@python.org>
	<1159060365.363391.238090@d34g2000cwd.googlegroups.com>
Message-ID: <ef8lk5$cu1$1@panix3.panix.com>

In article <1159060365.363391.238090 at d34g2000cwd.googlegroups.com>,
Blair P. Houghton <blair.houghton at gmail.com> wrote:
>wesley chun wrote:
>>
>> 1. never write against older versions of Python... you will only
>>     obsolete your book even faster (well, "sooner")
>
>I believe there is some market for documentation of older versions of
>software.  Many installations are constrained by the cost of upgrading
>and can not migrate to a newer version.  Meanwhile, they are laboring
>under the old documentation, which, in the case of open-source stuff,
>is often thoroughly inadequate.  Books with accurate information would
>help them, and would have helped me, in many cases.

You did see my advice, seconded by Wes, that any book should cover the
version differences?  How is that sufficiently inadequate that new books
should specifically target older versions?
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From eric.talevich at gmail.com  Wed Sep 20 03:30:47 2006
From: eric.talevich at gmail.com (Eric)
Date: 20 Sep 2006 00:30:47 -0700
Subject: newbe's re question
In-Reply-To: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
Message-ID: <1158737447.608962.214030@b28g2000cwb.googlegroups.com>

Eric_Dexter at msn.com wrote:
> All I am after realy is to change this
>
>  reline = re.line.split('instr', '/d$')
>
> into something that grabs any line with instr in it take all the
> numbers and then grab any comment that may or may not be at the end of
> the line starting with ; until the end of the line including white
> spaces.
>
> [code]
> def extractCsdInstrument (input_File_Name, output_File_Name,
> instr_number):
>     "takes an .csd input file and grabs instr_number instrument and
> creates output_File_Name"
>     f = open (input_File_Name , 'r')
>     f2 = open (output_File_Name, 'w')
>     instr_yes = 'false' # Python has built-in booleans
>                                # Also, use sane naming: isInstr or hasInstr
>
>     for line in f:
>       if "instr" in line:
>            if instr_yes == 'true': # Use the bool -- `if hasInstr:`
>                break
>
>            reline = re.line.split('instr', '/d$')     # ???
>            number = int(reline[1])
>                 if number == instr_number:      # Doesn't need to be 2 lines
>                 instr_yes = "true":                 # the `:` is a syntax error
>       if instr_yes = "true":
>            f2.write(f.line) # odd way of doing it...
>
>     f.close()
>     f2.close()
>
> [/code]

Did you read the HOWTO on regular expressions yet? It's included with
the standard documentation, but here's a link:

http://www.amk.ca/python/howto/regex/

Now, onto the issues:
1) The escape character is \, not /. Use "\d" to match a number.

2) I'm not sure I understand what you're trying to extract with your
regex. As it is, the expression will return a list containing one item,
a string identical to the line being matched up to, but not including,
the first number. The rest of the line will be discarded. Try Kiki, a
tool for testing regular expressions, before burying the expression in
your code.

3) Python has built-in booleans: True and False, no quotes. Use them so
that you don't get flamed on forums.

4) I don't claim to be a Python guru, but here's a massaged version of
the function you gave:

[code]

def extractCsdInstrument (inputPath, outputPath, instrId):
    """ Takes a .csd file, grabs info for instrument ID and writes to
file. """
    src = open(inputPath, 'r')
    dst = open(outputPath, 'w')
    for line in src:
	if "instr" in line:
	    info_comment = line.split(";", 1) # [info, comment]
            # Extract integers
            instrInfo = re.split(r"[^0-9]*", info_comment[0])
            # Check the second number in the line
            if instrInfo[1] == str(instrId):
		dst.write(instrInfo.append(info_comment[1]))
    src.close()
    dst.close()

[/code]

I didn't check if this actually works, since I don't know what a .csd
file looks like. There are of course other, better ways to do it, but
hopefully this leads you in the right direction.

5) Please, read the documentation that came with your Python
installation. Reading up on string methods etc. ahead of time will save
you much more time than trying to slug through it. Also consider using
a text editor with syntax highlighting; that will help catch most
obvious syntax errors during coding.



From kent at kentsjohnson.com  Mon Sep 11 08:03:38 2006
From: kent at kentsjohnson.com (Kent Johnson)
Date: Mon, 11 Sep 2006 12:03:38 GMT
Subject: efficient text file search.
In-Reply-To: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
Message-ID: <ugcNg.793$5i7.31@newsreading01.news.tds.net>

noro wrote:
> Is there a more efficient method to find a string in a text file then:
> 
> f=file('somefile')
> for line in f:
>     if 'string' in line:
>          print 'FOUND'

Probably better to read the whole file at once if it isn't too big:
f = file('somefile')
data = f.read()
if 'string' in data:
	print 'FOUND'


From oliver.andrich at gmail.com  Sun Sep 24 15:09:25 2006
From: oliver.andrich at gmail.com (Oliver Andrich)
Date: Sun, 24 Sep 2006 21:09:25 +0200
Subject: ctypes question about call by reference
In-Reply-To: <1hm6s39.kwqjy3a5kybkN%rhymes@myself.com>
References: <mailman.535.1159113152.10491.python-list@python.org>
	<1hm6khm.1wdxlsif8cyfN%rhymes@myself.com>
	<mailman.536.1159115299.10491.python-list@python.org>
	<1hm6s39.kwqjy3a5kybkN%rhymes@myself.com>
Message-ID: <6f7b52d0609241209s102280d2lae6306a754a56fc9@mail.gmail.com>

After a walk outside, some fresh air around my nose and some time to
relax, I finally found out how to do, what I want to do.

First, define the argument types and the result type.
    _dll.MagickGetException.argtypes = (c_long, POINTER(c_long))
    _dll.MagickGetException.restype  = c_char_p

Second, write correct code as it is documented. :)

def get_magick_exception(wand):
    severity = c_long()
    description = _dll.MagickGetException(wand, byref(severity))
    return (severity, description)

And thats all. I just did the call to POINTER(c_long) in the wrong
location. Now I do it as documented, and I get everything I want.

I can btw live perfectly without definining what actually a MagickWand
is, cause from the point of the developer just using the library and
documentation, he doesn't know about the actual structure of it. The
definition is hidden the C source of the library, and is not
documented in the public interface.

Thanks and Regards,
Oliver.

-- 
Oliver Andrich <oliver.andrich at gmail.com> --- http://roughbook.de/


From utabintarbo at gmail.com  Tue Sep 26 13:53:05 2006
From: utabintarbo at gmail.com (utabintarbo)
Date: 26 Sep 2006 10:53:05 -0700
Subject: Win32: Access to network resources w/o user login
Message-ID: <1159293185.847276.77190@i3g2000cwc.googlegroups.com>

Is there a way to (programmatically) access network resources from a
WinXP client without a user being logged in? I guess I need to know
where the fstab file is in Windows. :-P

Some more background: I am trying to access a samba share which is set
up for anonymous login (all unknown users are mapped to a known user)
with a process I hope to turn into a service (as soon as I figure
*that* out as well :-P).

Any help is *greatly* appreciated!



From marleyziggy at hotmail.com  Fri Sep  1 20:12:55 2006
From: marleyziggy at hotmail.com (Gimble)
Date: 1 Sep 2006 17:12:55 -0700
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
	<1157149768.698178.95060@b28g2000cwb.googlegroups.com>
Message-ID: <1157155975.609817.18620@m73g2000cwd.googlegroups.com>

> def flatten(x):
>     for i in range(len(x)):
>         if isinstance(x[i], list):
>             x[i:i+1] = x[i]

I don't think this does what you want.  Try [[[1,2,3]]] as a trivial
example.

A recursive version, that's not as short as yours:

def flatten(x):
    "Recursive example to flatten a list"
    if isinstance(x,list):
        if len(x):
            return flatten(x[0]) + flatten(x[1:])
        return []
    return [x]



From http  Fri Sep  1 01:18:21 2006
From: http (Paul Rubin)
Date: 31 Aug 2006 22:18:21 -0700
Subject: GC and security
References: <44F61EEB.8040207@optonline.net>
	<7x4pvtpxnc.fsf@ruckus.brouhaha.com>
	<44F63356.6060400@optonline.net>
	<7xlkp5h91p.fsf@ruckus.brouhaha.com> <iaDJg.9$062.6@newsfe10.lga>
	<7xy7t4ss1y.fsf@ruckus.brouhaha.com>
	<dCIJg.970$X26.742@newsfe09.lga>
	<wYOJg.12854$Qf.10941@newsread2.news.pas.earthlink.net>
Message-ID: <7xlkp488rm.fsf@ruckus.brouhaha.com>

Dennis Lee Bieber <wlfraed at ix.netcom.com> writes:
> 	This is after they'd made an 11x14 enlargement of the "stolen"
> print, cleaned it up with a marker, reduced to life size, and etched
> onto printed circuit board to form a mold for making a latex "skin".
> Which, BTW, also fooled the lock.

I remember copying my own fingerprints with Elmer's glue when I was in
third grade or so (just put a layer of glue on your fingertip, let it
dry, and peel it off).  I've always wanted to test that method on
today's electronic scanners, but it worked (at least somewhat) for
leaving visible fake prints on things.  The prints would have had the
wrong oils and stuff so maybe Sherlock Holmes-level forensics could
have picked up the difference.


From iker.arizmendi at gmail.com  Tue Sep 26 20:34:03 2006
From: iker.arizmendi at gmail.com (iker.arizmendi at gmail.com)
Date: 26 Sep 2006 17:34:03 -0700
Subject: releasing memory to malloc
Message-ID: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>

Is there any way to get Python to release memory back to the
C allocator? I'm currently running a script that goes through
the following steps:

1) Creates a very large number of Python objects to produce
a relatively small data structure that sits in a C extension.
The Python objects consume quite a bit of memory.

2) Releases all the Python objects.

3) Invokes a function of said C extension for further
processing. This step needs as much memory as possible.

I'd like step 2 to return memory to the C allocator so that it
is available to the extension in step 3 (which uses malloc).

Regards,
Iker Arizmendi



From vbfoobar at gmail.com  Tue Sep  5 16:04:35 2006
From: vbfoobar at gmail.com (vbfoobar at gmail.com)
Date: 5 Sep 2006 13:04:35 -0700
Subject: Looking for CGI program to browse/manage/process files thru the web
Message-ID: <1157486675.034778.291880@p79g2000cwp.googlegroups.com>

Hello,

I am looking for Python code no other language wanted) that I couls
use/reuse/adapt to implement (via CGI, no specific app server wanted)
a web-based app that would offer the following functionality:

- browse a file hierarchy perhaps dealing with access rights check

- classical file management operations like viewing downloading
  and perhaps renaming or deleting or copying...

- but above all I want to esaily add custom operations that can be
  applied to browsable files
  for example, easily add a button that would apply a filter (perhaps
  user-parametrable) against  the file and would display the output,
  adding another button to run such or such other file processing
  treatment...

- security/coherency checks, as e.g. asserting that a processed file
has
  such or such characteristics before even attempting to process it

It would be nice for me to start with existing code that would
constitute a clean and simple base that I could customize.
I'd like to avoid coding another HTML+forms+etc generator...

+ this should be open source.

Any advice?



From lycka at carmen.se  Fri Sep 22 11:32:01 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Fri, 22 Sep 2006 17:32:01 +0200
Subject: Python programs always open source?
In-Reply-To: <mailman.246.1158625452.10491.python-list@python.org>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>	<mailman.227.1158581355.10491.python-list@python.org>	<450eb358$0$19900$4d3efbfe@news.sover.net>	<mailman.233.1158592608.10491.python-list@python.org>	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
Message-ID: <ef0vlh$a15$1@wake.carmen.se>

Ben Finney wrote:
> Leif K-Brooks <eurleif at ecritters.biz> writes:
> 
>>>> Ben Finney wrote:
>>>>> So long as you're not distributing some or all of Python itself,
>>>>> or a derivative work, the license for Python has no legal effect
>>>>> on what license you choose for your own work.
> 
>> I was replying to Ben Finney's claim that in a hypothetical world
>> where Python was licensed under the GPL, there would still be no
>> restriction on distributing Python programs under a closed-source
>> license.
> 
> My claim (and IANAL) is that it doesn't matter *what* license Python
> is distributed under; unless you do something with Python that is a
> right of the copyright holder, such as distributing part or all of
> Python, the copyright license terms of Python have no legal effect on
> what license you choose for your own work.

As I read the GPL, you should be ok if you don't copy, distribute or
modify Python (if Python was GPL). Those are the activities covered
by the GPL license. Using py2exe to make a binary with both Python
and your own code would be a different matter. Even distributing a CD
with a GPL Python and your python modules would be a problem, since
you would be distributing GPL software with non-GPL software which will
be combined into a program as you run it.

If you just distribute your .py files, it probably doesn't matter if
someone else will run the unholy combination of GPL Python and
nongpl.py. I don't think a judge would consider executing
"gplpython nonglp.py" being copying, distribution or modification.

On the other hand, I think your "doesn't matter *what* license
Python is distributed under"-claim holds. If we are allowed to think
up other evil licenses, they could make claims on all files ever used
with their evil software, and I doubt that you could develop non-
trivial software without ever invoking it.

Still, the important thing is that Python uses a license which is
convenient for both proprietary software development and open source.


From Mark.Geyzer at gmail.com  Sat Sep 23 14:47:27 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 23 Sep 2006 11:47:27 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159036947.067545.141200@m7g2000cwm.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
	<1159034690.382602.256590@m7g2000cwm.googlegroups.com>
	<1159035610.860068.14330@m7g2000cwm.googlegroups.com>
	<1159036947.067545.141200@m7g2000cwm.googlegroups.com>
Message-ID: <1159037246.929802.205600@d34g2000cwd.googlegroups.com>


Gerard Flanagan wrote:
> volcano wrote:
> > Gerard Flanagan wrote:
> > > volcano wrote:
> > > > Hello, folks!
> > > > A trivial question - I have a working Python script that I have to
> > > > invoke from C++ code. No fancy stuff - just run the whole script with
> > > > its parameters. No callbacks, no signalling - nada, just
> > > > stupid,primitive, straightforward call.
> > > >
> > > > And while there is a lot of help on embedding, I could not find out how
> > > > to run script as a whole.SOS!!!!
> > >
> > > In C#:
> > >
> > > http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=st&q=&rnum=4#197b6a89095ef930
> > >
> > > hth
> > >
> > > Gerard
> >
> > Thanks for fast response, alas - it did not!
> > My problem is - application in C++ used to use external application,
> > which does not work well. So I sort of reproduced the functionality in
> > Python script, but now I am stuck, unable to run it properly.
>
> Maybe my understanding is wrong, but can't managed (.NET) C++ call into
> any other managed assembly, in this case (I think) System.Diagnostics?
> 
> Gerard

My application is written in regular C++:(



From MonkeeSage at gmail.com  Fri Sep 29 02:36:42 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 28 Sep 2006 23:36:42 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
	<mailman.918.1159509387.10491.python-list@python.org>
	<1159510625.265885.226700@i3g2000cwc.googlegroups.com>
Message-ID: <1159511802.337981.216840@e3g2000cwe.googlegroups.com>

Steve Holden wrote:
>   >>> to_bin(0)
> ''

Doh! Oh, yeah...that! ;)

OK...

def to_bin(x):
  out=[]
  while x > 0:
    out.insert(0, str(x % 2))
    x /= 2
  else:
    out.append(str(x))
  return ''.join(out)

Regards,
Jordan



From awalter1 at cegetel.net  Mon Sep 11 03:32:21 2006
From: awalter1 at cegetel.net (awalter1)
Date: 11 Sep 2006 00:32:21 -0700
Subject: get the en of a program running in background
In-Reply-To: <1157924568.562057.317380@e3g2000cwe.googlegroups.com>
References: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>
	<1157924568.562057.317380@e3g2000cwe.googlegroups.com>
Message-ID: <1157959941.657426.168900@b28g2000cwb.googlegroups.com>

Thanks a lot.
It does exactly what I expected and it's very simple

oripel a ?crit :

> Module 'subprocess' may be a better fit for you than fork+exec.
> Here's an example with a signal handler
> (1) use subprocess, don't fork and exec
> (2) maybe this will help:
>
> ---
> import signal, subprocess
>
> # define the signal handler
> def logsignal(signum, frame):
>    print "Caught signal"
>
> # register the signal handler for SIGCHLD
> signal.signal(signal.SIGCHLD, logsignal)
>
> # run the subprocess in the background
> subprocess.Popen(["sleep", "3"])
>
> # Do more stuff
> ---
>
> The signal handler will be called when the child process ends. Just
> register your own handler.
>
> You only need to register the handler once.
> If you need this for a single run only, or need different behavior for
> different subprocesses, have your signal handler re-register the old
> handler (see the docs for module 'signal').
>
> A note about the example: if you run it as is, the parent process will
> end before the child process does. Add a call to 'os.wait()' to have it
> wait for the child. In your GUI you probably won't want it.
>
> Hope this helps.
>
> awalter1 wrote:
> > Hi,
> > I develop a graphical user interface (with pyGTK) where a click on a
> > button shall launch a program P in background. I want to get the end of
> > this program P but I don't want that my HMI be freezed while P is
> > running.
> > I try to use fork examplesI found on the web, but it seems to not run
> > as expected.
> > I am not familiar with these techniques in unix as well as python.
> > But I suppose that my needs are usual, despite that I don't find
> > anything on the web ...
> > Is someone can give me a standard way to call a background program,
> > wait its end, with an IHM still active ?
> > 
> > Thank a lot for any idea.



From johnjsal at NOSPAMgmail.com  Tue Sep 19 14:01:43 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 18:01:43 GMT
Subject: help with relative imports
Message-ID: <bgWPg.3$1n3.37@news.tufts.edu>

I'm reading the "What's New" section of the 2.5 docs, and I'm a little 
confused by the last section of "Absolute and Relative Imports":

-----------------------------------------------
For example, code in the A.B.C module can do:

from . import D                 # Imports A.B.D
from .. import E                # Imports A.E
from ..F import G               # Imports A.F.G
-----------------------------------------------

Can someone explain this? It seems like information is missing. How do 
you know where D, E, F and G are to figure this out? If all you are 
given is A.B.C, and then someone gives you the above three examples, 
what steps do you take to figure out what gets imported from where?

Thanks,
John


From sybrenUSE at YOURthirdtower.com.imagination  Sun Sep 24 09:45:20 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sun, 24 Sep 2006 15:45:20 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
Message-ID: <slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
> Yes, I have done blobs. Still need a quoting function for the
> specials, though.

Why? What makes your data so different from mine? I can store newlines
and the likes just fine in a regular text field.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From vbfoobar at gmail.com  Tue Sep 26 23:51:06 2006
From: vbfoobar at gmail.com (vbfoobar at gmail.com)
Date: 26 Sep 2006 20:51:06 -0700
Subject: How to apply text changes to HTML,
	keeping it intact if inside "a" tags
Message-ID: <1159329066.218346.27310@d34g2000cwd.googlegroups.com>

Hello,

I have HTML input to which I apply some changes.

Feature 1:
=======
I want to tranform all the text, but if the text is inside
an "a href" tag, I want to leave the text as it is.

The HTML is not necessarily well-formed, so
I would like to do that using BeautifulSoup (or
maybe another tolerant parser).

As a test case, suppose I want to uppercase all the text
except the text that is within "a href" tags:

ExampleString = """
    <footag>Lorem Ipsum</footag> is simply
    dummy text of <a href="junk.html">the printing</a> and
    <a href="junk2.html">typesetting <b>industry</b>.</a>
    Thanks."""

When applying the text transform, I want to obtain:

    <footag>LOREM IPSUM</footag> IS SIMPLY
    DUMMY TEXT OF <a href="junk.html">the printing</a> AND
    <a href="junk2.html">typesetting <b>industry</b>.</a>
    THANKS."""


Feature 2:
========
Another thing I may want to do: If the text I would normally
transform is inside an "a href" tag, then do not transform it,
but insert the result of text transformation just after the "</a>".

Using the same example as input, application of
this feature2 would give something like that:

    <footag>LOREM IPSUM</footag> IS SIMPLY
    DUMMY TEXT OF <a href="junk.html">the printing</a><feat2>THE
PRINTING</feat2> AND
    <a href="junk2.html">typesetting
<b>industry</b>.</a><feat2>TYPESETTING <b>INDUSTRY</b>.</feat2>
    THANKS."""

========
Thanks for your help



From hpsekhon at googlemail.com  Fri Sep 29 09:54:43 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Fri, 29 Sep 2006 14:54:43 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <7xk63mpzwr.fsf@ruckus.brouhaha.com>
References: <mailman.801.1159372327.10491.python-list@python.org>	<1159531181.314800.224180@k70g2000cwa.googlegroups.com>	<mailman.936.1159535264.10491.python-list@python.org>
	<7xk63mpzwr.fsf@ruckus.brouhaha.com>
Message-ID: <451D25A3.7010803@googlemail.com>

I'm not sure if that is a very old way of doing it, which is why I was 
reluctant to do it. My way actually uses the process list of the os 
(linux) and counts the number of instances. If it is more than 0 then 
another process is running and the script exits gracefully.

Also, apart from the fact the using lockfiles feels a bit 1970s, I have 
found that in real usage of other programs within the company that use 
lockfiles, it sometimes causes a bit of troubleshooting time when it 
stops working due to a stale lockfile. This especially happens when the 
program is killed, the lockfile remains and causes minor annoyance (to 
somebody who knows that is, more annoyance to somebody who doesn't).

-h

Hari Sekhon



Paul Rubin wrote:
> Hari Sekhon <hpsekhon at googlemail.com> writes:
>   
>> Seeing as there doesn't seem to be a good answer to this (or at least
>> not one that we have so far some up with) I have decided to fall back
>> to my old friend the unix shell. It's as portable as python, but is
>> very flexible and fast at doing real things and will tell me if
>> another process by this name is running. If so, print msg and
>> exit. simple.
>>     
>
> Huh?  The obvious way to check for another instance is with a lock
> file.  Just open the file and use fcntl to set an exclusive lock.  If
> the lock acquisition fails, another instance has the file.
>   
-------------- next part --------------
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From breakfastea at gmail.com  Thu Sep 21 12:15:08 2006
From: breakfastea at gmail.com (breakfastea at gmail.com)
Date: 21 Sep 2006 09:15:08 -0700
Subject: How to return an "not string' error in function?
In-Reply-To: <71oau3-vr5.ln1@lairds.us>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
	<71oau3-vr5.ln1@lairds.us>
Message-ID: <1158855308.877117.187050@b28g2000cwb.googlegroups.com>

Thank you for your inputing which has been great inspirational:)

What I tried to do is to write a string.split() module, so I started
with:

def spilt(a):
    l=[]
    index=0
    if not isinstance(a, basestring): #Or isinstance(a, str)
        return
    for i in len(a):
        if a[i]=' ':
            item=a[index:i]
            l.append(item)
     ..................

I'm still working on it:)

Thank you again

Peace

PS: Is str() the same as repr() ?



Cameron Laird wrote:
> In article <1158848968.493858.96600 at k70g2000cwa.googlegroups.com>,
>  <breakfastea at gmail.com> wrote:
> >Thank you so much it answers my humble question perfectly:)
> >
>
> HOWEVER, to answer you final question, yes, there is a different
> and, in general, better, way.  While there's a lot to say about
> good Python style and typing, I'll summarize at a high level:
> you shouldn't have to check types.  I can understand that you
> are working to make a particular function particularly robust,
> and are trying to account for a wide range of inputs.  This is
> healthy.  In stylish Python, though, you generally don't need
> type checking.  How would it be, for example, if someone passed
> the number 3 to your function.  Is that an error?  Do you want
> it automatically interpreted as the string "3"?  You can achieve
> these results withOUT a sequence of
>
>   if isinstance(...
>   elif isinstance(...
>   ...
>
> perhaps with something as simple as
>
>   my_input = str(my_input).
>
> One of us will probably follow-up with a reference to a more
> detailed write-up of the subject.



From richard.charts at gmail.com  Tue Sep 19 15:06:36 2006
From: richard.charts at gmail.com (richard.charts at gmail.com)
Date: 19 Sep 2006 12:06:36 -0700
Subject: new string method in 2.5 (partition)
In-Reply-To: <40XPg.6$1n3.149@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>
Message-ID: <1158692796.366877.275040@b28g2000cwb.googlegroups.com>

I'm confused.
What's the difference between this and string.split?

John Salerno wrote:
> Forgive my excitement, especially if you are already aware of this, but
> this seems like the kind of feature that is easily overlooked (yet could
> be very useful):
>
>
> Both 8-bit and Unicode strings have new partition(sep) and
> rpartition(sep) methods that simplify a common use case.
> The find(S) method is often used to get an index which is then used to
> slice the string and obtain the pieces that are before and after the
> separator. partition(sep) condenses this pattern into a single method
> call that returns a 3-tuple containing the substring before the
> separator, the separator itself, and the substring after the separator.
> If the separator isn't found, the first element of the tuple is the
> entire string and the other two elements are empty. rpartition(sep) also
> returns a 3-tuple but starts searching from the end of the string; the
> "r" stands for 'reverse'.
>
> Some examples:
>
>
>  >>> ('http://www.python.org').partition('://')
> ('http', '://', 'www.python.org')
>  >>> ('file:/usr/share/doc/index.html').partition('://')
> ('file:/usr/share/doc/index.html', '', '')
>  >>> (u'Subject: a quick question').partition(':')
> (u'Subject', u':', u' a quick question')
>  >>> 'www.python.org'.rpartition('.')
> ('www.python', '.', 'org')
>  >>> 'www.python.org'.rpartition(':')
> ('', '', 'www.python.org')
>
> (Implemented by Fredrik Lundh following a suggestion by Raymond Hettinger.)



From steve at holdenweb.com  Mon Sep 11 11:21:04 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 16:21:04 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <45057B5E.7010306@googlemail.com>
References: <45057B5E.7010306@googlemail.com>
Message-ID: <ee3urn$ane$1@sea.gmane.org>

Hari Sekhon wrote:
> I am writing a wrapper to a binary command to run it and then do 
> something with the xml output from it.
> 
> What is the best way of making sure that the command is installed on the 
> system before I try to execute it, like the python equivalent of the 
> unix command "which"?
> 
> Otherwise I'd have to do something like:
> 
> if os.system('which somecommand') != 0:
>     print "you don't have %s installed" % somecommand
>     sys.exit(1)
> 
> I know that isn't portable which is why a python solution would be 
> better (although this will run on unix anyway, but it'd be nice if it 
> ran on windows too).
> 
The easiest way to test whether the command will run is to try and run 
it. If the program doesn't exist then you'll get an exception, which you 
can catch. Otherwise you'll be stuck with non-portable mechanisms for 
each platform anyway ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Thu Sep 14 10:11:06 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 14 Sep 2006 10:11:06 -0400
Subject: Outbound port on sockets
In-Reply-To: <1158238687.403115.250480@m73g2000cwd.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
Message-ID: <eebnsf$1r4$1@sea.gmane.org>

billie wrote:
[...]
> The right format of a FTP PORT command is:
> 
> PORT x,x,x,x,y,z
> 
> ....where x(s) represents your IP address in dotted form and (x * y) the
> TCP port you bind.
That's actually x*256 + y - tou're makling a 16-bit unsigned integer 
from two bytes.

> For further informations you can check RFC959 or take a look at ftplib
> in standard module library. Also in twisted you can find a lot of
> useful code in the module protocols.ftp.
> 
regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Sat Sep 30 04:18:58 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 09:18:58 +0100
Subject: why logging re-raise my exception and can't be caught?
In-Reply-To: <87ac4hkd8w.fsf@benfinney.id.au>
References: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>
	<87ac4hkd8w.fsf@benfinney.id.au>
Message-ID: <efl97u$jgg$1@sea.gmane.org>

Ben Finney wrote:
[...]
> A 'try ... except' statement is not an exception handler. [...]

Just as a matter of interest, what would your definition of an exception 
handler be, then? Specifically, what's the "except" clause for?

The docs for looging.except should make it explicit that the exception 
will be re-raised.

Of course it might be possible to do something hackish like

     try:
         ...
     except:
         try:
             logging.exception(...)
         except:
             pass

which (although untested) should theoretically allow the catching (for a 
second time) of teh exception reraised by logging.exception().

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From MichaelDMcDonnell at yahoo.com  Wed Sep 13 23:41:04 2006
From: MichaelDMcDonnell at yahoo.com (Michael)
Date: 13 Sep 2006 20:41:04 -0700
Subject: How do I converted a null (0) terminated string to a Python string?
Message-ID: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>

Hi All,

I've received (via UDP) a null terminated string and need to convert it
into a Python string. Can anyone tell me how this is done? If it helps,
I know the number of characters in the string.

Thanks,
M. McDonnell



From anthony at interlink.com.au  Wed Sep 13 07:57:40 2006
From: anthony at interlink.com.au (Anthony Baxter)
Date: Wed, 13 Sep 2006 21:57:40 +1000
Subject: RELEASED Python 2.5 (release candidate 2)
Message-ID: <200609132157.44342.anthony@interlink.com.au>

On behalf of the Python development team and the Python
community, I'm happy to announce the second RELEASE
CANDIDATE of Python 2.5.

After the first release candidate a number of new bugfixes
have been applied to the Python 2.5 code. In the interests
of making 2.5 the best release possible, we've decided to
put out a second (and hopefully last) release candidate. We
plan for a 2.5 final in a week's time.

This is not yet the final release - it is not suitable for
production use. It is being released to solicit feedback
and hopefully expose bugs, as well as allowing you to
determine how changes in 2.5 might impact you. As a release
candidate, this is one of your last chances to test the new
code in 2.5 before the final release. *Please* try this
release out and let us know about any problems you find.

In particular, note that changes to improve Python's support
of 64 bit systems might require authors of C extensions
to change their code. More information (as well as source
distributions and Windows and Universal Mac OSX installers)
are available from the 2.5 website:

    http://www.python.org/2.5/

As of this release, Python 2.5 is now in *feature freeze*.
Unless absolutely necessary, no functionality changes will
be made between now and the final release of Python 2.5.

The new features in Python 2.5 are described in Andrew
Kuchling's What's New In Python 2.5. It's available from the
2.5 web page.

Amongst the language features added include conditional
expressions, the with statement, the merge of try/except
and try/finally into try/except/finally, enhancements to
generators to produce a coroutine kind of functionality, and
a brand new AST-based compiler implementation.

New modules added include hashlib, ElementTree, sqlite3,
wsgiref, uuid and ctypes. In addition, a new profiling
module "cProfile" was added.

Enjoy this new release,
Anthony

Anthony Baxter
anthony at python.org
Python Release Manager
(on behalf of the entire python-dev team)


From jwjw at zerny.invalid  Fri Sep 15 08:52:52 2006
From: jwjw at zerny.invalid (Bill Williams)
Date: Fri, 15 Sep 2006 08:52:52 -0400
Subject: Tkinter on Python 2.4 on Mac OS X?
References: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>
	<1158164457.310716.207170@h48g2000cwc.googlegroups.com>
	<jwjw-4A259D.13195013092006@news.isp.giganews.com>
	<1158246366.973809.206040@i42g2000cwa.googlegroups.com>
Message-ID: <jwjw-26FFAC.08525215092006@news.isp.giganews.com>

In article <1158246366.973809.206040 at i42g2000cwa.googlegroups.com>,
 "Ben Kovitz" <bkovitz at acm.org> wrote:

> Maybe this is a better question for me to ask:  *How* did you get
> Python 2.4 running with Tkinter on OS X?
> 
> Ben Kovitz

Hi Ben

I am by no means a Python expert, but finding my way slowly. There is a 
lot of documentation, but it seems hard to find the critical nuggets 
among the mass. (Rather like playing Colossal Cave long ago!)

I didn't do anything special to get Python 2.4 and Tkinter running on OS 
10.3.9. Just downloaded and installed MacPython OSX 2.4.1 dmg (Mar 31, 
2005) and TclTk Aqua 8.4.10 dmg (June 6 2005). The IDE About box says 
IDE 1.0.2, Python 2.4.1 #2 Mar 31 2005 build 1666, and it all just 
works, including saving a script as an applet.

The point about applets is that one nugget of information points out 
that the graphics environments like Tkinter conflict with the IDE 
graphics environment, so you can't run them under the IDE, and saving as 
applets was the easiest way to get stuff to run standalone.

Cheers, Bill Williams


From emlyn at brizzle.com  Fri Sep  8 20:21:17 2006
From: emlyn at brizzle.com (ml1n)
Date: 8 Sep 2006 17:21:17 -0700
Subject: Map with an extra parameter
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
	<1157760537.816693.243780@d34g2000cwd.googlegroups.com>
Message-ID: <1157761277.421434.233500@h48g2000cwc.googlegroups.com>

bearophileHUGS at lycos.com wrote:
> This may be what you need:
>
> class foo:
>   def __init__(self, a, b):
>      self.a = a
>      self.b = b
>
> vars = [1,2,3,4,5,6]
> objects = [foo(a, 1) for a in vars]
>
>
> Note that in Python the new is expressed wit the () at the end:
>
> >   f = new foo()
>
> Bye,
> bearophile

(Not sure if this group likes top or bottom posts, sorry)
Thanks for the reply,
In the interests of speed my thinking was that using map would move the
loop out of Python and into C, is that the case when using list
comprehension?  I'd always thought it was just syntatic short hand for
a Python loop.

M.



From onurb at xiludom.gro  Tue Sep 26 04:24:17 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 26 Sep 2006 10:24:17 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <4518e3b2$0$31387$626a54ce@news.free.fr>

walterbyrd wrote:
> If so, I doubt there are many. 

We're at least two here...

> I wonder why that is?
> 
I wonder why you have such an a priori ?


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From george.sakkis at gmail.com  Wed Sep  6 23:20:43 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 6 Sep 2006 20:20:43 -0700
Subject: Refactor a buffered class...
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>
	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>
	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>
	<mailman.98.1157578665.5279.python-list@python.org>
Message-ID: <1157599243.076703.180740@p79g2000cwp.googlegroups.com>

Michael Spencer wrote:

> Here's a small update to the generator that allows optional handling of the head
> and the tail:
>
> def chunker(s, chunk_size=3, sentry=".", keep_first = False, keep_last = False):
>      buffer=[]
>      sentry_count = 0
>
>      for item in s:
>          buffer.append(item)
>          if item == sentry:
>              sentry_count += 1
>              if sentry_count < chunk_size:
>                  if keep_first:
>                      yield buffer
>              else:
>                  yield buffer
>                  del buffer[:buffer.index(sentry)+1]
>
>      if keep_last:
>          while buffer:
>              yield buffer
>              del buffer[:buffer.index(sentry)+1]


And here's a (probably) more efficient version, using a deque as a
buffer:

from itertools import islice
from collections import deque

def chunker(seq, sentry='.', chunk_size=3, keep_first=False,
keep_last=False):
    def format_chunks(chunks):
        return [' '.join(chunk) for chunk in chunks]
    iterchunks = itersplit(seq,sentry)
    buf = deque()
    for chunk in islice(iterchunks, chunk_size-1):
        buf.append(chunk)
        if keep_first:
            yield format_chunks(buf)
    for chunk in iterchunks:
        buf.append(chunk)
        yield format_chunks(buf)
        buf.popleft()
    if keep_last:
        while buf:
            yield format_chunks(buf)
            buf.popleft()


def itersplit(seq, sentry='.'):
    # split the iterable `seq` on each `sentry`
    buf = []
    for x in seq:
        if x != sentry:
            buf.append(x)
        else:
            yield buf
            buf = []
    if buf:
        yield buf


s = " this .  is a . test to . check if it . works . well . it looks .
like ."
for p in chunker(s.split(), keep_last=True, keep_first=True):
    print p


George



From skip at pobox.com  Sun Sep 10 07:04:48 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sun, 10 Sep 2006 06:04:48 -0500
Subject: pyExcelerator question - dates map to floats?
In-Reply-To: <1157863929.201427.317320@m73g2000cwd.googlegroups.com>
References: <17667.36008.986704.400318@montanaro.dyndns.org>
	<mailman.225.1157861240.5279.python-list@python.org>
	<1157863929.201427.317320@m73g2000cwd.googlegroups.com>
Message-ID: <17667.61776.227899.670099@montanaro.dyndns.org>


    John> Check out my "xlrd" package.
    John> http://cheeseshop.python.org/pypi/xlrd/0.5.2

    ...

John,

Thank you.  I wasn't aware of it.  I'd seen mention of pyExcelerator a few
times recently.  All I need is to read Excel spreadsheets anyway.  I will
check it out.

I'm up for reading a good rant. ;-)

Skip


From aleax at mac.com  Tue Sep 12 23:12:47 2006
From: aleax at mac.com (Alex Martelli)
Date: Tue, 12 Sep 2006 20:12:47 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
Message-ID: <1hlki4l.hxeyzim53ewmN%aleax@mac.com>

metaperl <metaperl at gmail.com> wrote:

Yes, keywords are always reserved.  The one major language that tried to
do otherwise was PL/I, where you could code, e.g.:

  if if = if then then = else else else = if

((of course, '=' was also polimorpically read as either assignment OR
comparison -- I gather that most Basic dialects still do that!-)).

IBM (PL/I's inventor and rabid defender) found out the hard way that
making the parser more complicated, slow and bug-prone in order to allow
such absurd obfuscation was NOT a popular trade-off -- despite IBM's
alleged monopoly power, PL/I is now basically dead while the older,
crankier languages that PL/I wanted to replace, Cobol and particularly
Fortran, are still quite alive (and with reserved words ALWAYS reserved
-- like in C, Python, Java, C#, Haskell, and basically every language
that's even halfway sensible;-).


> Is Python 3k going to fix this sort of thing?

Fortunately not, or we'd all be busy studying Ruby or Boo!-)


Alex


From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 09:09:48 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 14:09:48 +0100
Subject: Import a textfile to MS SQL with python
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B416@vogbs009.gb.vo.local>

[joel.sjoo at gmail.com]

| i gott the same results with both executemany and execute. i will try
| with some other sql modules. if you try tim so let me now if 
| you cot it
| to work.

OK, the relevant thing here is the paramstyle. When I made that
misguided claim earlier that "?" was the most common parameter
character, I didn't check whether pymssql actually uses it. And
it doesn't.

<code>
import pymssql
print pymssql.paramstyle
# pyformat

</code>

This means that you are expected to put %s everywhere you
want a substitution from your parameter list. Again, don't
bother quoting for strings etc. Therefore, the following 
works for this db-module:

<code>
import pymssql
db = pymssql.connect (...)

#
# Fake some data as tho' it had come from
# your text file.
#
data = data = [[1, 'Tim', 'Golden'], [2, 'Fred', 'Smith']]

q = db.cursor ()
q.execute ("CREATE TABLE ztemp (id INT, first_name VARCHAR (60),
last_name VARCHAR (60))")

q.executemany ("INSERT INTO ztemp (id, first_name, last_name) VALUES
(%s, %s, %s)", data)

q.execute ("SELECT * FROM ztemp")
for row in q.fetchall ():
  print row

q.execute ("DROP TABLE ztemp")

</code>

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From george.sakkis at gmail.com  Thu Sep 21 16:56:03 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 21 Sep 2006 13:56:03 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
	<1157720105.181682.169290@m73g2000cwd.googlegroups.com>
	<1157723311.085204.168070@i42g2000cwa.googlegroups.com>
	<1157756579.885367.294880@m73g2000cwd.googlegroups.com>
	<cs95h2t5qvnftipbmr7a43ol0alche8seh@4ax.com>
Message-ID: <1158872163.029378.159890@i3g2000cwc.googlegroups.com>

robin wrote:

> "George Sakkis" <george.sakkis at gmail.com> wrote:
>
> >Here's what I came up with:
> >http://rafb.net/paste/results/G91EAo70.html. Tested only on my
> >bookmarks; see if it works for you.
>
> That URL is dead. Got another?

Yeap, try this one:
http://gsakkis-utils.googlecode.com/svn/trunk/scripts/bookmarks.py

George



From bhaduri at mail.utexas.edu  Mon Sep 11 16:24:59 2006
From: bhaduri at mail.utexas.edu (Sashmit Bhaduri)
Date: Mon, 11 Sep 2006 15:24:59 -0500
Subject: question about including something like sqlite in python
In-Reply-To: <9tiNg.2735$No6.53971@news.tufts.edu>
References: <9tiNg.2735$No6.53971@news.tufts.edu>
Message-ID: <ee4ghd$b4j$1@ns3.arlut.utexas.edu>

John Salerno wrote:
> This is just me thinking out loud, mind you, but it seems like including
>  a database module (especially one that many people won't use in favor
> of MySQL or PostgreSQL, etc.) is weighing down the standard library. 

Weighing down the standard library? The latest version of sqlite is only
40k SLOC while Python 2.5 incl' the standard library is well over 700k
SLOC.


From onurb at xiludom.gro  Thu Sep 14 16:21:51 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 14 Sep 2006 22:21:51 +0200
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <1158244219.019209.326140@e3g2000cwe.googlegroups.com>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
	<450930d6$0$22499$626a54ce@news.free.fr>
	<1158244219.019209.326140@e3g2000cwe.googlegroups.com>
Message-ID: <4509b9e0$0$27233$636a55ce@news.free.fr>

akameswaran at gmail.com wrote:
> Bruno Desthuilliers wrote:
>> akameswaran at gmail.com wrote:
(snip)
>>> class caseFunction(object):
>>>     def __init__(self):
>>>         self.caseDict = {'a':"retval = 'a'",
>>> 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
>>>
>>> "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
>>>                          "i":"retval='i'"}
>>>
>>>     def doIt(self,a):
>>>         exec(self.caseDict.get(a))
>>>         return retval
>> Err...  Why would you want to exec anything here ? Remember that
>> Python's functions are objects too:
>>
> Largely because it was immaterial to what I am asking about here, which
> is dictionary literals. 

Indeed. But it could as well have been related to not knowing about
first-class functions (I always suspect something wrong when I see and
exec or eval...)

> I was also curious about how much overhead
> exec had - even on simple statements, and it's about as bad as I would
> have guessed.  Finally - it's a little quicker to write out the exec
> dictionary than all of the functions ;)

(snip)

>> class SwitchFunc(object):
>>   def __init__(self, default, **kw):
>>     self._default = default
>>     self._switch = kw
>>
>>   # makes the object callable.
>>   def __call__(self, case, *args, **kw):
>>     func = self._switch.get(case, self._default)
>>     return func(*args, **kw)
>>
>> switch = SwitchFunc(defaultFunc, a=funcA, b=funcB, c=funcC)
>>
>> for case in "abcX":
>>   print switch(case, "foo", q=42)
>>
> Now I'm not sure what the value of "semi" abstraction is here.

Nor am I - I never came to write such a code in now 6+ years of Python
programming (and believe me, I sometimes write weird and hairy code !-).

>  If we
> are going to make the class semi generic, might as well have it use
> exec, then the function determined by the switch statement could be
> dynamically changed at runtime

Actually, there are few things that can't be dynamically changed at
runtime in Python !-p

> (and run like a pig).

>  Otherwise, we need
> to have those functions implemented so what do we gain? 

If you find a way to run code that's not been written one way or
another, *please* share with us !-)

> I was also
> going to say, why not make the functions instance methods, but --
> surprise surprise - when I timed it out, the lookup was ever so
> slightly slower for the instance methods. 

Hardly surprising - method lookup and invocation is a somewhat involved
process (read about the descriptor protocol and __getattribute__'s
implementation for new style classes...).

> I had to do about 100,000
> loops of it for the speed difference to be definitive, but oddly enough
> lookup to the module function was faster than looking up an instance
> method.

Yes. The faster lookup is probably in the local namespace, but then it
would requires a rewrite of the switcher for each and every use case -
in which case it's simpler to rewrite the whole mechanism where needed...

As as side note, the absence of a switch statement in Python usually
leads me to think of a better (IMHO at least) design - but I'm not
really a speed-freak, so YMMV...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From vatamane at gmail.com  Tue Sep 26 04:32:29 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 26 Sep 2006 01:32:29 -0700
Subject: Query regarding grep!!
References: <mailman.632.1159251557.10491.python-list@python.org>
Message-ID: <1159259549.574420.158460@i42g2000cwa.googlegroups.com>

Of course you can always use grep as an external process (if the OS has
it). For example:

-------------------------------------------------------------------
In [1]: import subprocess

In [2]: out=subprocess.Popen( 'grep -i blah ./tmp/*',
stdout=subprocess.PIPE, shell=True ).communicate()[0]

In [3]: out
Out[3]: './tmp/ex.tex:Blah blah blah...\n'
-------------------------------------------------------------------

-Nick V.



bhavya sg wrote:
> Hi,
>
>  I saw in PEP4 of python 2.5 that grep module has gone
> obsolete in perl 2.5. But I am not able to find an
> alternative for that.My doubt is "are the other forms
> of grep like egrep and ggrep be used instead"?
>
> cheers,
> Spurthi
>
>
>
>
> __________________________________________________________
> Yahoo! India Answers: Share what you know. Learn something new
> http://in.answers.yahoo.com/



From dummy at dummy.nl  Wed Sep 13 17:03:08 2006
From: dummy at dummy.nl (Cecil Westerhof)
Date: Wed, 13 Sep 2006 23:03:08 +0200
Subject: urllib en https
References: <4508649d$0$4521$e4fe514c@news.xs4all.nl>
Message-ID: <4508720c$0$4520$e4fe514c@news.xs4all.nl>

Cecil Westerhof wrote:

> Something went wrong with my last post. So, again:
> 
> I have a strange problem. I wrote a script that uses urllib.urlopen to
> fetch a page through https. In Python 2.2.2 this works without a problem.
> But when I use the script in Python?2.4.1 (which is more recent)?I?get:
> 
> Traceback (most recent call last):
> File?"<stdin>",?line?1,?in??
> File?"/usr/local/lib/python2.4/urllib.py",?line?79,?in?urlopen
> return?opener.open(url,?data)
> File?"/usr/local/lib/python2.4/urllib.py",?line?177,?in?open
> return?self.open_unknown(fullurl,?data)
> File?"/usr/local/lib/python2.4/urllib.py",?line?189,?in?open_unknown
> raise?IOError,?('url?error',?'unknown?url?type',?type)
> IOError: [Errno url error] unknown url type: 'https'

I found the problem. The first Python was compiled with ssl support enabled
and the second without ssl support enabled.



From esj at harvee.org  Tue Sep 26 15:03:41 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Tue, 26 Sep 2006 15:03:41 -0400
Subject: R.S.I. solutions?
In-Reply-To: <slrnehi8l8.4bt.nick@irishsea.home.craig-wood.com>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>	<4nqrt0Fbp16mU1@uni-berlin.de>
	<slrnehi8l8.4bt.nick@irishsea.home.craig-wood.com>
Message-ID: <4519798D.70805@harvee.org>

Nick Craig-Wood wrote:
> This is excellent advice... I was diagnosed with tendonitis over 5
> years ago now.  I found the medical people generally hopeless, but the
> physios really know their stuff (this is in the UK also).

some know their stuff but a vast majority of them are humming because 
they don't know the words.

12 years ago, I went through a whole bunch of doctors including 
physiotherapist etc. and they all just kind of said "sucks to be you". 
Now, after having been stable for 10 years, the pain is getting worse 
again.  This time the nerve conduction studies show compression and it's 
off to the neurologist I go.  I expect a second round of "sucks to be you"

Now the list of things he suggested are basically sound but only work 
for a small proportion of people injured.  This is the real big 
indicator that the medics don't know what they're doing or even have a 
vague understanding of the problem.  We would get just as good a result 
if we gave people tonics and told them to stay out of the miasmic vapors 
of the lowlands.



> 2) Get your workplace right! chair height, screen height, distance to
> keyboard etc.  The physio can advise here.

it is exceptionally difficult to do this yourself even if you are 
well-educated.  The reason being is that you need somebody else from the 
outside to look at how you are sitting.  You also need someone to visit 
and evaluate your workspace.
> 
> 3) The physio recommended a rolled up towel as a wrist rest - for me
> that is just the thing.  It is large and soft.

my problem is a different one.  Most keyboards are to narrow for me.  If 
you have the classic IT profile (i.e. spare tire), your elbows will be 
pushed out and your hands will want to form a / \ position to the 
keyboard and as a result, you will twist your wrists outward to make 
them parallel so you can easily get the keys.

I have seen even normal weight large men have problems with keyboard 
width.  The only people who haven't had problems are typically women 
under 130 pounds.  It would be really nice to find a keyboard with a 
wide center space and no keypad.

The other thing to pay attention to are the keys themselves.  Many 
keyboards today are garbage.  Cheap ( but not necessarily inexpensive) 
keyboards including the Microsoft natural, have sticky keys that make 
you use too much pressure in order to get a keystroke and then 
frequently you will bottom out with a sharp shock.  At any one time, out 
of a selection of 30 or 40 different keyboards I might find one with 
acceptable keys.

What's really strange is that most people think laptop keyboards are 
horrible but I absolutely love the ones I've had from Dell and Acer 
laptops.  the Acer one is truly remarkable because the keyboard is 
arranged in a smiling face which accommodates my greater width without 
being obnoxiously wide.  If only they would put that on a desktop 
keyboard, I would be very happy.  In terms of key pressure, that's also 
wonderful.  It's lightweight and I barely have to touch them.  IMO, it's 
a win.

> 4) I swapped my mouse usage to the left hand (my right hand was
> worse).  It took a few months to get used to but it feels totally
> natural now.  I can now mouse with both hands just fine.

I'm currently using a trackball although the best input device for me 
has been a tablet with pen.  I do wish the pen was fatter and cushier 
but that's something you can do to using some foam if there's some way 
to keep the pen side buttons available.  see wacom for the 4 x 6 
tablets.  Be aware however that a pen costs almost half a tablet and are 
only available over the mat so that when a pen breaks, it is frequently 
cheaper/easier to throw a tablet away and buy a new one than it is to 
replace the pen.

> RSI is a complicated disease - there are lots of different forms of it
> all caused by different things.  You'll need some professional advice
> to sort it out.

and lots of whom don't know what they are doing.  you will be pushed in 
different directions and the only thing I will say to stay away from is 
surgery.  Especially for ulnar nerve transposition.  I do not know a 
single person that that has helped investing lots of people with scars 
all over their arms and neck from surgeons mucking about with nerves 
like they were Dr. Frankenstein creating new life.

the rule of thumb is: try anything you want but stay away from anything 
you can't go back and get seconds.

which reminds me.  It's incredibly easy to gain weight at the best of 
time for geeks like us.  If you are hurting, in lots of pain, and 
feeling very isolated, it's really easy to gain even more weight if you 
seek solace in food.  It's hard but try to resist.  Gaining weight will 
make the symptoms worse but losing the weight afterwards won't always 
make you feel better.

Do what you can with the parts of your body that aren't hurting.  Go 
walking, put together the money for a recumbent bicycle (under seat 
steering is a godsend if you like to ride in your arms hurt).  Hike with 
somebody else who can carry a backpack for you.

there are other suggestions about how our side affects you and your 
partner that are best left off a programming language form but have been 
discussed in various injured person mailing lists like sorehand.

---eric



From chrisBrat at gmail.com  Mon Sep  4 06:26:38 2006
From: chrisBrat at gmail.com (Chris Brat)
Date: 4 Sep 2006 03:26:38 -0700
Subject: Better way to replace/remove characters in a list of strings.
Message-ID: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>

Hi,

Is there a better way to replace/remove characters (specifically ' and
" characters in my case, but it could be anything) in strings in a
list, than this example to replace 'a' with 'b':



x = ["abbbb","123a","nnnnas"]

for i, v in enumerate(x) :
    x[i] = v.replace("a","b")


This works, but I'd like to know peoples opinions.

Thanks
Chris



From hpsekhon at googlemail.com  Mon Sep 11 11:55:04 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Mon, 11 Sep 2006 16:55:04 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <1157989290.649744.167690@h48g2000cwc.googlegroups.com>
References: <mailman.256.1157987147.5279.python-list@python.org>
	<1157989290.649744.167690@h48g2000cwc.googlegroups.com>
Message-ID: <450586D8.9010700@googlemail.com>

Rob Wolfe wrote:
> Hari Sekhon wrote:
>   
>> I am writing a wrapper to a binary command to run it and then do
>> something with the xml output from it.
>>
>> What is the best way of making sure that the command is installed on the
>> system before I try to execute it, like the python equivalent of the
>> unix command "which"?
>>
>> Otherwise I'd have to do something like:
>>
>> if os.system('which somecommand') != 0:
>>     print "you don't have %s installed" % somecommand
>>     sys.exit(1)
>>
>> I know that isn't portable which is why a python solution would be
>> better (although this will run on unix anyway, but it'd be nice if it
>> ran on windows too).
>>     
>
> IMHO this is pretty portable:
>
>   
>>>> def is_on_path(fname):
>>>>         
> ...     for p in os.environ['PATH'].split(os.pathsep):
> ...             if os.path.isfile(os.path.join(p, fname)):
> ...                     return True
> ...     return False
>
> HTH,
> Rob
>
>   

That works well and is portable, fits nicely. I was actually curious if 
somebody already came across this and perhaps put a func like this in 
the standard modules...

Thanks.

-h

-- 
Hari Sekhon

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From skip at pobox.com  Wed Sep  6 15:55:52 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 6 Sep 2006 14:55:52 -0500
Subject: Scientific computing and data visualization.
In-Reply-To: <bad9aa44c01d4aed8eca236810337ea4@atlas.cz>
References: <bad9aa44c01d4aed8eca236810337ea4@atlas.cz>
Message-ID: <17663.10184.115486.36709@montanaro.dyndns.org>

        
    Fie>        I would like to have a high class open source tools for
    Fie>        scientific computing and powerful 2D and 3D data
    Fie>        visualisation. Therefore I chose python, numpy and scipy as
    Fie>        a base. Now I am in search for a visualisation tool. I tried
    Fie>        matplotlib and py_opendx with OpenDx. OpenDx seems to me
    Fie>        very good but the project py_opendx looks like closed. After
    Fie>        py_opendx instalation and subsequent testing I got an error
    Fie>        that needs discussion with author or an experienced
    Fie>        user. Unfortunately a mail to author returned as
    Fie>        undeliverable.

Have you considered VTK and/or MayaVi?

Skip


From goofyheadedpunk at gmail.com  Tue Sep 19 18:30:03 2006
From: goofyheadedpunk at gmail.com (Brian L. Troutwine)
Date: 19 Sep 2006 15:30:03 -0700
Subject: pprint: "...thank small children who sleep at night."
Message-ID: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>

The heading comment to pprint reads:

#  This is a simple little module I wrote to make life easier.  I
didn't
#  see anything quite like it in the library, though I may have
overlooked
#  something.  I wrote this when I was trying to read some heavily
nested
#  tuples with fairly non-descriptive content.  This is modeled very
much
#  after Lisp/Scheme - style pretty-printing of lists.  If you find it
#  useful, thank small children who sleep at night.

Is the last sentence an obscure reference or in-joke? Can someone
explain it? I don't get it.



From bedouglas at earthlink.net  Thu Sep 21 21:24:12 2006
From: bedouglas at earthlink.net (bruce)
Date: Thu, 21 Sep 2006 18:24:12 -0700
Subject: Don't use regular expressions to "validate" email addresses (was:
	Ineed some help with a regexp please)
In-Reply-To: <87lkoczp48.fsf_-_@benfinney.id.au>
Message-ID: <323f01c6dde5$d04af360$0301a8c0@Mesa.com>

so ben...

if you were creating a web app with an email form... rather than try to
check if the email is valid... you'd create something to allow anyone to
potentially spam the hell out of a system...

my two cents worth... try to verify/validate that the email is valid, and
possibly belongs to the user...

peace...



-----Original Message-----
From: python-list-bounces+bedouglas=earthlink.net at python.org
[mailto:python-list-bounces+bedouglas=earthlink.net at python.org]On Behalf
Of Ben Finney
Sent: Thursday, September 21, 2006 6:07 PM
To: python-list at python.org
Subject: Don't use regular expressions to "validate" email addresses
(was: Ineed some help with a regexp please)


"John Machin" <sjmachin at lexicon.net> writes:

> A little more is unfortunately not enough. The best advice you got was
> to use an existing e-mail address validator. The definition of a valid
> e-mail address is complicated. You may care to check out "Mastering
> Regular Expressions" by Jeffery Friedl. In the first edition, at least
> (I haven't looked at the 2nd), he works through assembling a 4700+ byte
> regex for validating e-mail addresses. Yes, that's 4KB.  It's the best
> advertisement for *not* using regexes for a task like that that I've
> ever seen.

The best advice I've seen when people ask "How do I validate whether
an email address is valid?" was "Try sending mail to it".

It's both Pythonic, and truly the best way. If you actually want to
confirm, don't try to validate it statically; *use* the email address,
and check the result.  Send an email to that address, and don't use it
any further unless you get a reply saying "yes, this is the right
address to use" from the recipient.

The sending system's mail transport agent, not regular expressions,
determines which part is the domain to send the mail to.

The domain name system, not regular expressions, determines what
domains are valid, and what host should receive mail for that domain.

Most especially, the receiving mail system, not regular expressions,
determines what local-parts are valid.

--
 \       "I believe in making the world safe for our children, but not |
  `\    our children's children, because I don't think children should |
_o__)                                  be having sex."  -- Jack Handey |
Ben Finney

--
http://mail.python.org/mailman/listinfo/python-list



From cfriedl at bigpond.net.au  Thu Sep 21 07:12:30 2006
From: cfriedl at bigpond.net.au (Chris)
Date: Thu, 21 Sep 2006 11:12:30 GMT
Subject: get process id...
In-Reply-To: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
References: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
Message-ID: <ysuQg.33219$rP1.23055@news-server.bigpond.net.au>

SpreadTooThin wrote:
> How does one get the process id?
> Is there a method for windows and unix (mac os x etc...)
> 

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/442477

hth


From renwei at koal.com  Tue Sep 19 06:08:54 2006
From: renwei at koal.com (weir)
Date: 19 Sep 2006 03:08:54 -0700
Subject: Formatting device from a script on Windows
In-Reply-To: <1158657724.805015.165750@b28g2000cwb.googlegroups.com>
References: <1158657724.805015.165750@b28g2000cwb.googlegroups.com>
Message-ID: <1158660534.275633.43240@h48g2000cwc.googlegroups.com>

this may help, you need ctypes module.

##############################
from ctypes import *

fm = windll.LoadLibrary('fmifs.dll')

def myFmtCallback(command, modifier, arg):
    print command
    return 1	# TRUE

FMT_CB_FUNC = WINFUNCTYPE(c_int, c_int, c_int, c_void_p)


FMIFS_HARDDISK = 0x0C
fm.FormatEx(c_wchar_p('H:\\'), FMIFS_HARDDISK, c_wchar_p('NTFS'),
c_wchar_p('title'), True, c_int(0), FMT_CB_FUNC(myFmtCallback))



From bearophileHUGS at lycos.com  Tue Sep 19 17:51:30 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 19 Sep 2006 14:51:30 -0700
Subject: Replace single character at given position
In-Reply-To: <ke46u3-b2j.ln1@thunderbird.tld>
References: <ke46u3-b2j.ln1@thunderbird.tld>
Message-ID: <1158702690.314364.8320@b28g2000cwb.googlegroups.com>

Martin Kulas:
> Are there better (faster) ways to achieve my goal?
> I have looked through the methods of type ``string''
> but I have not found any appropriate method or function.

Python strings are immutable, so you can't modify them, so you can't
find methods to change them. I agree that sometimes this is a pain,
expecially if you come from languages where strings are mutable.

The best solution may seem the strangest, that is "to not need to do
that". Often with python you can use different (higher level) code that
doesn't require to change many single chars inside a string.

A second way is to use a list of strings with len=1. Like this:
>>> idx = 1
>>> s1 = "pxthon"
>>> l1 = list(s1)
>>> l1[idx] = 'y'
... more processing on the elements of l1, then at the end:
>>> "".join(l1)
'python'

Note that structures like that l1 require a lot of memory.


A third solution is to use an array of chars:
>>> from array import array
>>> a1 = array("c", s1)
>>> a1
array('c', 'pxthon')
>>> a1[idx] = "y"
>>> a1
array('c', 'python')
>>> a1.tostring()
'python'

Bye,
bearophile



From g.brandl-nospam at gmx.net  Mon Sep 25 16:47:11 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 22:47:11 +0200
Subject: Printing a percent sign
In-Reply-To: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
Message-ID: <ef9f8g$3ht$1@news.albasani.net>

stephen at theboulets.net wrote:
> Hi all. How do I escape the "%" sign in a print statement so that it
> prints? Thanks.

 >>> print "%"
%

Did you mean in a string being interpolated with the % operator?

Georg


From bdesth.quelquechose at free.quelquepart.fr  Tue Sep 26 16:32:45 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 26 Sep 2006 22:32:45 +0200
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <45198acb$0$1378$636a55ce@news.free.fr>

John Salerno a ?crit :
> It's a nice thought that a person can earn a living programming with 
> Python, which is fun enough to use just for its own sake. But for 
> someone like me (i.e. no programming experience) it's always a little 
> disheartening to see that most (if not all) job descriptions that ask 
> for Python still require some C/C++ or other language knowledge. I 
> suppose this isn't an issue if you studied CS in college, because you 
> would have been exposed to many languages.

You don't need to go to college to learn a programming language. I 
learnt C with the K&R2 and c.l.c. FWIW and IMVHO, there are at least two 
languages any programmer should know : C and Lisp.

> But what if you are an expert Python program and have zero clue about 
> other languages? 

I really doubt one can be an "expert" in any language without at least a 
good knowledge of a half a dozen other languages and some exposure to 
yet another half dozen.

In my current job, I daily use Python, PHP, SQL (in at least three 
flavors), Javascript, bash scripting, regexps (in a few flavors), html 
(yes, I know it's not a 'programming' language), css, half a dozen 
"web-templating" languages and a couple of "configuration" languages 
(apache, make etc). And I sometimes have to read/hack C or Java code.

> Can you still earn a living that way, or do most/all 
> companies require multiple language proficiency?

If a company only ask you for one single language, then you probably 
don't want the job.

> (I suppose this isn't exactly a Python problem,

Well, part of the problem is that once you've learned Python, most other 
languages (at least the 'main stream' ones) feels like a PITA...

> either. I'm sure even 
> companies that don't use Python still use multiple languages.

Most of them, yes. Some don't. Guess where you'll find the best 
programmers...

> Maybe it 
> isn't a good idea to focus entirely on a single language, depending on 
> the job at hand.)

Right.


From bj_666 at gmx.net  Fri Sep  8 04:34:55 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 08 Sep 2006 10:34:55 +0200
Subject: help with unicode email parse
References: <1157378961.284028.55840@m79g2000cwm.googlegroups.com>
	<1157416665.006114.63170@h48g2000cwc.googlegroups.com>
	<1157425054.822558.228950@74g2000cwt.googlegroups.com>
	<1157465231.163700.279630@h48g2000cwc.googlegroups.com>
	<1157465543.794948.79000@i3g2000cwc.googlegroups.com>
	<1157471114.594330.123480@m73g2000cwd.googlegroups.com>
	<1157471386.436178.151310@m73g2000cwd.googlegroups.com>
	<1157510240.237102.202190@h48g2000cwc.googlegroups.com>
	<1157526684.506238.192580@i3g2000cwc.googlegroups.com>
	<1157601601.965201.95710@e3g2000cwe.googlegroups.com>
	<1157604050.886228.267330@p79g2000cwp.googlegroups.com>
	<1157627312.123904.76620@m73g2000cwd.googlegroups.com>
	<1157683777.315563.95960@d34g2000cwd.googlegroups.com>
	<1157688075.918718.63480@b28g2000cwb.googlegroups.com>
	<1157693089.096269.191580@b28g2000cwb.googlegroups.com>
Message-ID: <pan.2006.09.08.08.34.54.623566@gmx.net>

In <1157693089.096269.191580 at b28g2000cwb.googlegroups.com>, neoedmund
wrote:

> john , you can look my code:
> it downloads email and save to local filesystem(filename and email
> contains non-english characters)
> it works now.
> but i still think python's unicode string is not as straightforward as
> java's
> string SHOULD always be unicode. or i'm trouble dealing them when they
> are in different encodings. because before using it, i must try to find
> what encoding it use, unicode or 8bit. and why the system use ascii to
> decode. you have explained some, but i cannot catch up you. however i
> never have encoding problem using string in java.

Really?  That would be true magic.  Outside the program strings have to be
encoded somehow so they always have to be decoded when you want a unicode
string. And it's impossible to guess the encoding 100% correctly.

Just go ahead and create some text files encoded in `utf-8`, `iso-8859-1`,
`ibm850` and make sure they contain characters that are not encoded with
the same byte values across those encodings, "umlauts" for instance.
"H?ll?" might be a good test string.  Now read all those different text
files an print the content in Java and see yourself that it's necessary to
give the encoding explicitly if you want to deal with arbitrary encodings
and not just the default Java uses.

Ciao,
	Marc 'BlackJack' Rintsch


From steve at holdenweb.com  Mon Sep 11 20:30:53 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 01:30:53 +0100
Subject: Running python from a usb drive
In-Reply-To: <d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>	<ee4fm8$2elh$1@ulysses.news.tiscali.de>	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
Message-ID: <ee4v2k$pi3$1@sea.gmane.org>

Thorsten Kampe wrote:
> * Steve Holden (2006-09-11 21:37 +0100)
> 
>>Uwe Hoffmann wrote:
>>
>>>cjl schrieb:
>>>
>>>>I do set pythonpath, see above.
>>>
>>>is pythonpath really case insensitive on windows ?
>>
>>Only because the Windows filesystem implements case-insensitive 
>>semantics. This is nothing to do with Python:
> 
> 
> That's nonsense: "Filenames are Case Sensitive on NTFS Volumes"[1]
> 
> Thorsten
> [1] http://support.microsoft.com/kb/100625/en-us

Sigh. Right, the semantics are actually inside the subsystem accessing 
the filesystem, if I have to dot every I and cross every T. Note that 
the reference you quote includes the test """However, if you attempt to 
open one of these files in a Win32 application, such as Notepad, you 
would only have access to one of the files, regardless of the case of 
the filename you type in the Open File dialog box."""

So perhaps I should have said the Win32 API implements case-insensitive 
semantics? Sure, if you want to use the POSIX compatibility layer it's 
absolutely possible to create several files that Win32 applications will 
be completely unable to distinguish between. Whatever good that might do 
you.

Sheesh, the nits that get picked on this list nowadays. I can remember 
when it used to be fun, not an exercise in ego inflation.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Mon Sep  4 02:24:20 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 04 Sep 2006 07:24:20 +0100
Subject: What does mod_python.publisher handler do?
In-Reply-To: <1157343138.145034.103500@m79g2000cwm.googlegroups.com>
References: <1157343138.145034.103500@m79g2000cwm.googlegroups.com>
Message-ID: <edggpj$63e$1@sea.gmane.org>

yaru22 wrote:
> I was reading Chapter 6.1 in mod_python manual at www.python.org.
> 
> The manual simply says:
> 
> The publisher handler is a good way to avoid writing your own handlers
> and focus on rapid application development.
> 
> I still don't understand what this publisher handler is for.
> 
> Can someone elaborate the above phrase with some examples please?
> 
> Thanks in advance.
> 
I think perhaps your reading of the documentation has been a little less 
than assiduous. Does


     http://www.modpython.org/live/current/doc-html/hand-pub.html

make it any clearer? There the examples show you exactly how to use the 
handler, and the point of providing it is to allow you to use mod_python 
without going to the trouble of writing your own handler.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From malkarouri at gmail.com  Tue Sep 26 11:44:33 2006
From: malkarouri at gmail.com (malkarouri at gmail.com)
Date: 26 Sep 2006 08:44:33 -0700
Subject: identifying new not inherited methods
Message-ID: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>

Hi,

I am writing a library in which I need to find the names of methods
which are implemented in a class, rather than inherited from another
class. To explain more, and to find if there is another way of doing
it, here is what I want to do: I am defining two classes, say A and B,
as:

class A(object):
    def list_cmds(self):
        'implementation needed'
        ?
    def __init__(self):
    ... (rest of class)

class B(A):
    def cmd1(self, args):
        pass
    def cmd2(self, args):
        pass

I need an implementation of list_cmds in A above so that I can get a
result:

>>> b=B()
>>> b.list_cmds()
['cmd1','cmd2']                    #order not important

I will be happy if anybody can point to me any way of doing it, using
class attributes, metaclasses or otherwise. What I don't want to do is
modifying class B, which contains just the cmds, if possible.

Many thanks in advance.

k



From deets at nospam.web.de  Sun Sep 10 05:42:26 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 10 Sep 2006 11:42:26 +0200
Subject: Unicode / cx_Oracle problem
In-Reply-To: <rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
	<rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
Message-ID: <4mi503F63uluU1@uni-berlin.de>

Richard Schulman schrieb:
>>>  cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
>>>      VALUES (:id,:mean)""",id=id,mean=mean)
>>> ...
>>>  "cx_Oracle.NotSupportedError: Variable_TypeByValue(): unhandled data
>>> type unicode"
>>>
>>> But when I try putting a codecs.BOM_UTF16_LE in various plausible
>>> places, I just end up generating different errors.
> 
> Diez:
>> Show us the alleged plausible places, and the different errors. 
>> Otherwise it's crystal ball time again.
> 
> More usefully, let's just try to fix the code above. Here's the error
> message I get:
> 
> NotSupportedError: Variable_TypeByValue(): unhandled data type unicode
> 
> Traceback (innermost last):
> 
> File "c:\pythonapps\LoadMeanToOra.py", line 1, in ?
>   # LoadMeanToOra reads a UTF-16LE input file one record at a time
> File "c:\pythonapps\LoadMeanToOra.py", line 23, in ?
>   cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
> 
> What I can't figure out is whether cx_Oracle is saying it can't handle
> Unicode for an Oracle nvarchar2 data type or whether it can handle the
> input but that it needs to be in a specific format that I'm not
> supplying.

What does

print repr(mean)

give you?

It _looks_ to me (don't have an orcacle available right now) as if it is 
  a unicode object. That you have to consider as some abstract string 
representation. Which means it has to be encoded in some way before sent 
over the wire. There might exist db-api bindings that can deal with 
them, by applying a default encoding or somehow figuring out what 
encoding the DB expects. But I don't see any references to unicode in 
pep 249, so I presume you can't rely on that - which seems to be the 
case here.

The oracle NLS is a sometimes tricky beast, as it sets the encoding it 
tries to be clever and assigns an existing connection some encoding, 
based on the users/machines locale. Which can yield unexpected results, 
such as "Dusseldorf" instead of "D?sseldorf" when querying a german city 
list with an english locale.

So - you have to figure out, what encoding your db-connection expects. 
You can do so by issuing some queries against the session tables I 
believe - I don't have my oracle resources at home, but googling will 
bring you there, the important oracle term is NLS.

Then you need to encode the unicode string before passing it - something 
like this:

mean = mean.encode("latin1")

That should help.

Diez


From steve at holdenweb.com  Tue Sep 19 09:05:05 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 09:05:05 -0400
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <eeop6s$j0$2@sea.gmane.org>
References: <450FDFD6.5050601@gmail.com> <eeop6s$j0$2@sea.gmane.org>
Message-ID: <eeopsh$4v6$1@sea.gmane.org>

Steve Holden wrote:
> Nico Grubert wrote:
> 
>>Hi there,
>>
>>I'd like to install Python 2.3.5. on a 64-Bit OS (Suse Linux Enterprise 
>>Server 10) on an AMD Opteron 64-Bit machine.
>>I have to use Python 2.3.5.
>>
>>Do I need a special source archive or can I use "Python-2.3.5.tgz" from 
>>http://www.python.org/ftp/python/2.3.5/Python-2.3.5.tgz ?
>>
>>Is there anything special I have to care about or is installing Python 
>>on a 64 Bit OS just as easy as installing it on a 32-Bit OS?
>>
> 
> More recent versions of Python have incorporated much more support for 
> 64-bit architectures. 2.5 is about to be released (I believe it should 
> be out in the next 24 hours), and I'd recommend that over the older 
> version you are considering.
> 
Correction: it's out NOW!

get-it-while-it's-hot-ly y'rs  - steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From hpsekhon at googlemail.com  Mon Sep 11 12:03:41 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Mon, 11 Sep 2006 17:03:41 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <NYmdnZXPYfZ-GJjYnZ2dnUVZ_v2dnZ2d@comcast.com>
References: <mailman.256.1157987147.5279.python-list@python.org>
	<NYmdnZXPYfZ-GJjYnZ2dnUVZ_v2dnZ2d@comcast.com>
Message-ID: <450588DD.70308@googlemail.com>

Steven Bethard wrote:
> Hari Sekhon wrote:
>   
>> I am writing a wrapper to a binary command to run it and then do 
>> something with the xml output from it.
>>
>> What is the best way of making sure that the command is installed on the 
>> system before I try to execute it, like the python equivalent of the 
>> unix command "which"?
>>     
>
> There is the which module:
>
>      http://trentm.com/projects/which/
>
> But I'd probably just try the command and catch the exception, e.g.:
>
>  >>> import subprocess
>  >>> try:
> ...     subprocess.call(['foo'])
> ... except OSError:
> ... 	print "you don't have foo installed"
> ...
> you don't have foo installed
>  >>> try:
> ...     subprocess.call(['svm_learn'])
> ... except OSError:
> ... 	print "you don't have svm_learn installed"
> ...
> 1
>
> STeVe
>   
looks good, although I agree with you on the try it and see simplicity. 
I think if the which.py was part of the standard lib then I would use 
it, but as it is I will stick to the original path search that you 
recommended (I'm not gonna both dealing with the pathext just yet)

-- 
Hari Sekhon

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From amk at amk.ca  Tue Sep 12 17:29:48 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Tue, 12 Sep 2006 16:29:48 -0500
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<5sidnY0_IITrmZrYnZ2dnUVZ_oqdnZ2d@speakeasy.net>
	<1158091389.180731.275700@m73g2000cwd.googlegroups.com>
	<YYudnQ445rocg5rYnZ2dnUVZ_sWdnZ2d@speakeasy.net>
Message-ID: <pYKdnR0OOZRRu5rYnZ2dnUVZ_smdnZ2d@speakeasy.net>

On Tue, 12 Sep 2006 15:54:25 -0500, 
	A.M. Kuchling <amk at amk.ca> wrote:
> (Any new changes won't get in 2.5c2, which should be
> released tomorrow, but will get into 2.5final if the fixes are made by
> about the 17th.)

And in fact the formatted development version no longer reflects
what's in the trunk: I've just checked in a bunch of minor typo fixes
and other edits to the trunk.  So you may want to wait until tomorrow
when these fixes show up... or you can look at the original LaTeX in
the SVN browser at <http://svn.python.org/view/python/trunk/Doc/lib/>.

--amk



From lycka at carmen.se  Wed Sep 13 07:10:42 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 13 Sep 2006 13:10:42 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158078076.198865.6690@e63g2000cwd.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
Message-ID: <ee8ovi$5k1$1@wake.carmen.se>

Paul Boddie wrote:
> To be fair, that text originates in section 12.3, referring to input
> parameters to procedures. Meanwhile, the following text (subclause
> 13.8, "<insert statement>") appears to be more pertinent:
> 
> "If the data type of the target identified by the i-th <column name> is
> an exact numeric type, then the data type of the i-th item of the
> <insert statement> shall be an exact numeric type."

And SQLite behaves as expected if you provide a numeric value
to a numeric column, right? In other words, it complies to that
clause.

Does the spec state how the database engine should behave if the
client breaks the requirements for insert? I guess that this is
implementation dependent.


From benkial at hotmail.com  Thu Sep 28 18:34:54 2006
From: benkial at hotmail.com (Ben Kial)
Date: 28 Sep 2006 15:34:54 -0700
Subject: Socks server and client code in Python (Twisted?)
Message-ID: <1159482894.027791.229470@c28g2000cwb.googlegroups.com>

I'd like to create a Socks (4 or 5) server and client program using
Python. Someone suggested me to use Twisted. Does anybody have any
sample code for Socks server and client in Python?

Thanks in advance,

Ben



From tim at tdw.net  Fri Sep  1 06:51:55 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 1 Sep 2006 11:51:55 +0100
Subject: Adding sender name to email
In-Reply-To: <G51204832.381.112.1@mx-extra>
References: <G51204832.381.112.1@mx-extra>
Message-ID: <9afea2ac0609010351y2fe3dddev33261f9d52a0bca0@mail.gmail.com>

On 1 Sep 2006 03:26:12 -0700, gillespie.amanda at gmail.com
<gillespie.amanda at gmail.com> wrote:
> How do I add a Sender name to the emails sent by the following script:
>

>
>         writer = MimeWriter.MimeWriter(out)
>         # set up some basic headers... we put subject here
>         # because smtplib.sendmail expects it to be in the
>         # message body
>         #
>         writer.addheader("Subject", subject)
>         writer.addheader("MIME-Version", "1.0")
>         #

add the line

writer.addheader("From", a_sender_address)

and you should also have

writer.addheader("To", some_recipient_address(es)_as_a_string)

The smtp sender & recipients do not relate to the sender & recipients
in the email itself,  Often they are the same, but they don't have to
be.

HTH :)


From deets at nospam.web.de  Sat Sep 30 04:05:37 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 30 Sep 2006 10:05:37 +0200
Subject: why logging re-raise my exception and can't be caught?
In-Reply-To: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>
References: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>
Message-ID: <4o6mqhFd6o95U1@uni-berlin.de>

daniel schrieb:
> I use a simple program to illustrate the problem:
> 
> import logging
> 
> def foo() :
>     raise ValueError("foo")
> 
> if __name__ == "__main__" :
>     try :
>         foo()
>     except ValueError :
>         logging.exception("caught here")  -- seems re-raise the
> exception and can't be caught
>         print "caught here" --- just works.
> 
> I'm expecting the exception to be caught silently, and print the msg to
> some place, if I comment out the logging statement, it just works, but
> now, the stack trace is printed as if the except statement was not
> there!!
> 
> how could this happen, just weird.. can I make the logging module
> behave as I expected?

For starters - reading the documentation. The logging.exception-call 
precisely is for printing the exception as if it was not caught at all.

If you don't want that, don't use it - use one of the error, warn, info 
or debug calls.

Diez


From jantod at gmail.com  Fri Sep 15 10:58:42 2006
From: jantod at gmail.com (Janto Dreijer)
Date: 15 Sep 2006 07:58:42 -0700
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<12glelm8a37tp63@corp.supernews.com>
Message-ID: <1158332322.661048.38360@b28g2000cwb.googlegroups.com>

Grant Edwards wrote:
> On 2006-09-15, Janto Dreijer <jantod at gmail.com> wrote:
...
> > Would it be a reasonable solution to initiate a TCP connection
> > from the client to the server and somehow (?) let the server
> > figure out how the client is connecting? And then send UDP to
> > client over the same (IP, port)?
>
> I doubt that will work unless the firewall has been
> specifically designed to recognize that pattern of activity and
> allow the incoming UDP packets.  I don't think most firewall
> have default rules that allow UDP packets to tunnel back along
> a TCP connection.

Thanks for the info!

I think you may be right. I had to configure the local firewall to
allow all connections from the server. Which kinda defeats the purpose.
If you have control over the NAT why not just assign a dedicated port?

There might still be value in this approach, however. Even though I
have control over the NAT I have multiple clients that might need to
create these connections. I would need to map ports to be able to
handle simultaneous connections.

It's Friday afternoon over here, so I may be wrong...



From fredrik at pythonware.com  Tue Sep 26 15:44:58 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 21:44:58 +0200
Subject: Whither binary search?
In-Reply-To: <y4fSg.1876$5i7.112@newsreading01.news.tds.net>
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>	<mailman.722.1159296789.10491.python-list@python.org>
	<y4fSg.1876$5i7.112@newsreading01.news.tds.net>
Message-ID: <efbvvq$5th$1@sea.gmane.org>

Neil Cerutti wrote:

>> bisect...
> 
> That doesn't tell me if an item doesn't exist in the sequence
> though, does it?  Maybe I'm being dense.

I guess you could use something like

import bisect

def check(list, item):
     try:
	return list[bisect.bisect_left(list, item)] == item
     except IndexError:
	return False

but unless your lists are really large, or your objects are expensive to 
compare, you could probably just use "in" instead.

 > My guess nobody keeps their sequences sorted in Python.

well, people tend to use dictionaries when they need to look things up 
quickly...

</F>



From bignose+hates-spam at benfinney.id.au  Sun Sep 24 08:18:23 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sun, 24 Sep 2006 22:18:23 +1000
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de> <4nn8vuFb1oe9U1@individual.net>
Message-ID: <873bahxxtc.fsf@benfinney.id.au>

Bjoern Schliessmann <usenet-mail-0306.20.chr0n0ss at spamgourmet.com> writes:

> Ingo Linkweiler wrote:
>
> > yes, I do this allready. But it would be nice to do some checks
> > before to avoid wrong user inputs.
>
> What do you do if the user inputs a "wrong" address? If you reject
> with an error message, the medium intelligent user will enter
> something like
>
> sdjfgsdjhg at gmx.net
>
> as next try, circumventing your test.

I believe Ingo is checking for the case where the user intended to
enter a valid email address, and made a typing error resulting in a
trivially invalid one.

-- 
 \      "'Did you sleep well?' 'No, I made a couple of mistakes.'"  -- |
  `\                                                     Steven Wright |
_o__)                                                                  |
Ben Finney



From http  Thu Sep 28 06:32:59 2006
From: http (Paul Rubin)
Date: 28 Sep 2006 03:32:59 -0700
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<1159370280.794129.104190@i3g2000cwc.googlegroups.com>
	<slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>
	<efg109$4vr$1@news.albasani.net>
	<slrnehn6e8.rcu.apardon@rcpc42.vub.ac.be>
	<7xac4k1dya.fsf@ruckus.brouhaha.com>
Message-ID: <7x64f81dt0.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> > sys.maxint - 3 to sys.maxint + 7. I'm not sure tbl[:Top]
> > would do what it is supposed to do in those circumstances.

> Top = object()
> class Table(list):
...

Oh wait, I missed the : in your tbl[:Top] example.  Yeah, you could
hair up Table to account for slices, I'll leave the exercise to you.


From simon at arrowtheory.com  Tue Sep 19 19:32:38 2006
From: simon at arrowtheory.com (Simon Burton)
Date: 19 Sep 2006 16:32:38 -0700
Subject: find class where method was defined ?
Message-ID: <1158708758.721787.232600@i3g2000cwc.googlegroups.com>


>>>
>>> class A(object):
...   def foo(self): pass
...
>>>
>>> class B(A):
...   pass
...
>>>
>>> b=B()
>>> b.foo
<bound method B.foo of <__main__.B object at 0xb7b1924c>>

How can I work out what class b.foo was defined in ?


Simon.



From aleax at mac.com  Tue Sep 12 01:31:48 2006
From: aleax at mac.com (Alex Martelli)
Date: Mon, 11 Sep 2006 22:31:48 -0700
Subject: How to get the package, file,
	and line of a method/function invocant?
References: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>
Message-ID: <1hliuk8.1fnsui6u87m34N%aleax@mac.com>

metaperl <metaperl at gmail.com> wrote:

> I am looking for something like the caller() routine in Perl:
>    http://perldoc.perl.org/functions/caller.html

Look at the inspect module in Python's standard library.


Alex


From oripel at gmail.com  Sat Sep  9 22:13:28 2006
From: oripel at gmail.com (oripel)
Date: 9 Sep 2006 19:13:28 -0700
Subject: Function metadata (like Java annotations) in Python
Message-ID: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>

Hi,

I'm trying to attach some attributes to functions and methods, similar
to Java annotations and .NET attributes.
I also want to use a convenient decorator for it, something along the
lines of

@attr(name="xander", age=10)
def foo():
  ...

Assigning attributes to the function will work, as will assigning keys
and values to a dictionary in an attribute. But if there are more
decorators in the way, this could fail:

@onedec
@attr(...)
@twodec
def foo():
  ...

Given 'foo' now, how do I find the attributes?

Assigning to a global attribute registry (some interpreter-global
dictionary), although less desirable, might have been acceptable, but
then how do I identify the function after it's been wrapped in more
decorators?

Also, it may be nice to have the following work as well:

@attr(name="Xander")
@attr(age=10)
@somedec
@attr(hobby="knitting")
def foo():
  ...


Any thoughts? Am I rehashing something old that my search skills didn't
uncover?

Thanks!
Ori.



From st at tobiah.org  Wed Sep 13 15:19:23 2006
From: st at tobiah.org (tobiah)
Date: Wed, 13 Sep 2006 12:19:23 -0700
Subject: page contents are not refreshed
In-Reply-To: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
References: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
Message-ID: <45084ca6$0$19716$88260bb3@free.teranews.com>

Browser Cache?

Gleb Rybkin wrote:
> when running apache, mod_python in windows.
> 
> This looks pretty strange. Creating a simple python file that shows
> current time will correctly display the time in apache the first time,
> but freezes afterwards and shows the same time on all subsequent clicks
> as long as the file is not modified.
> 
> Any ideas what's wrong? Thanks.
> 
> from mod_python import apache
> from time import strftime, gmtime
> 
> curtime = strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
> def handler(req):
>      req.content_type = "text/plain"
>      req.send_http_header()
>      req.write(str(curtime))
>      return apache.OK
> 

-- 
Posted via a free Usenet account from http://www.teranews.com



From exogen at gmail.com  Mon Sep 25 16:29:03 2006
From: exogen at gmail.com (Brian Beck)
Date: Mon, 25 Sep 2006 16:29:03 -0400
Subject: ANN: dmath 0.9 - Math routines for the Decimal type
References: <ef9bab$fbj$1@eeyore.INS.cwru.edu>
	<ef9brp$hjv$1@eeyore.INS.cwru.edu>
	<mailman.602.1159214732.10491.python-list@python.org>
Message-ID: <ef9e5r$lb9$1@eeyore.INS.cwru.edu>

km wrote:
> and how different is MIT licence to GPL ?
> could u elaborate on that ?
> regards,
> KM

The GPL license is a copyleft license, meaning: "The GPL does not give the
licensee unlimited redistribution rights. The right to redistribute is
granted only if the licensee includes the source code (or a legally-binding
offer to provide the source code), including any modifications made.
Furthermore, the distributed copies, including the modifications, must also
be licensed under the terms of the GPL." (Wikipedia)

The MIT license is non-copyleft, meaning anyone has the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies provided
they keep the license text with the library.

-- 
Brian Beck
Adventurer of the First Order


From sjmachin at lexicon.net  Mon Sep 25 05:15:28 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 02:15:28 -0700
Subject: unicode, bytes redux
In-Reply-To: <7xzmcoe3ne.fsf@ruckus.brouhaha.com>
References: <mailman.552.1159166294.10491.python-list@python.org>
	<7xy7s8crty.fsf@ruckus.brouhaha.com>
	<45178f23$0$19894$4d3efbfe@news.sover.net>
	<7xwt7suzv8.fsf@ruckus.brouhaha.com>
	<1159173488.326443.245730@d34g2000cwd.googlegroups.com>
	<7xzmcoe3ne.fsf@ruckus.brouhaha.com>
Message-ID: <1159175728.867594.310880@i42g2000cwa.googlegroups.com>


Paul Rubin wrote:
> "John Machin" <sjmachin at lexicon.net> writes:
> > Actually, what Willie was concerned about was some cockamamie DBMS
> > which required to be fed Unicode, which it encoded as UTF-8,
>
> Yeah, I remember that.
>
> > Tell you what, why don't you and Willie get together and write a PEP?
>
> If enough people care about the problem, I'd say just submit a code
> patch.  I haven't needed it myself, but I haven't (so far) had to deal
> with unicode that often.  It's a reasonably logical thing to want.
> Imagine if the normal length(string) function required copying the
> string around.

Almost as bad: just imagine a language that had a normal strlen(string)
function that required mucking all the way through the string until you
hit some cockamamie in-band can't-happen-elsewhere sentinel.

Cheers,
John



From http  Mon Sep 25 03:45:29 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 00:45:29 -0700
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org>
Message-ID: <7xy7s8crty.fsf@ruckus.brouhaha.com>

willie <willie at jamots.com> writes:
> # U+270C
> # 11100010 10011100 10001100
> buf = "\xE2\x9C\x8C"
> u = buf.decode('UTF-8')
> # ... later ...
> u.bytes() -> 3
> 
> (goes through each code point and calculates
> the number of bytes that make up the character
> according to the encoding)

Duncan Booth explains why that doesn't work.  But I don't see any big
problem with a byte count function that lets you specify an encoding:

     u = buf.decode('UTF-8')
     # ... later ...
     u.bytes('UTF-8') -> 3
     u.bytes('UCS-4') -> 4

That avoids creating a new encoded string in memory, and for some
encodings, avoids having to scan the unicode string to add up the
lengths.


From mail at microcorp.co.za  Mon Sep 11 02:19:55 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Mon, 11 Sep 2006 08:19:55 +0200
Subject: Is there a way to take a priori knowledge out of field definitions?
Message-ID: <00f401c6d56a$6ff7d380$03000080@hendrik>

Hi,

It is possible to build a system where the fields are "self defining" : -

One way is to keep a dictionary of tags and descriptors, and to keep "the data"
in a dictionary using the same tags as keys, with values - an oversimplified
example:

DefinitionDict = {1:'Quantity',2:'Price',3:'Value'}

DataItemDict = {1:10,2:3.50,3:35.00}

This is conceptually not much different to putting headers on columns in a
database table or a spreadsheet, with the data item being a row, or to HT or
XML.

Now obviously the definitions need not be single valued strings, but could be
multivalues, for use at different times, such as for gui displaying, for
printing, etc, and could also hold type information, as most databases do.

Up to this point, there is no a priori human knowledge mixed in with the data
that has not been written down.

However, when we want to make say a validation rule, such as Quantity times
Price must equal Value, then we are using a priori knowledge about the data to
formulate this.

At this point, if a routine is written to check that DataItemDict[1] multiplied
by DataItemDict[2] is indeed equal to DataItemDict[3], then we are casting the
meanings into stone, and the flexibility of the structure is to a large extent
lost.

Now if I want to make a system where these sort of rules, as well as more
complicated ones, are also definable - Is there a way to do it simply and
cleanly - a way to expand the DefinitionDict so that it contains all of what we
know about the structure and relationships of and between the items of data?

It seems to me that if this could be done, then it could be used to dynamically
generate the routines needed for validation, update, etc...

But my brain strains when I try to think about how to do it...

- Hendrik



From pmcgover at gmail.com  Sun Sep 24 17:05:29 2006
From: pmcgover at gmail.com (pmcgover at gmail.com)
Date: 24 Sep 2006 14:05:29 -0700
Subject: Converting Perl Web Report to Python
In-Reply-To: <%5gRg.5231$UG4.3934@newsread2.news.pas.earthlink.net>
References: <1159016655.956844.27090@d34g2000cwd.googlegroups.com>
	<%5gRg.5231$UG4.3934@newsread2.news.pas.earthlink.net>
Message-ID: <1159131929.131598.164460@i42g2000cwa.googlegroups.com>

Dennis,
I was able to execute the Mysql command line code you created in
"script1.py".  I was not able to test the "preferred" method used in
script2.py.  I will do this later this week when I have more time to
download and install the required MySQLdb module.  In any event, I
would like to know how to search and replace a given string in the sql
to a user supplied value before execution.

For example, lets say that your sql script looks like this:
> -=-=-=-=-=-=-=-=-=-		script1.sql
select name, URL, description, occurs
from comics
where URL like '%MyParam_1%'        # Note that "MyParam_1" represents
a "catch" string.
order by name;
> -=-=-=-=-=-=-=-=-=-

Using the script2.py process, how could I safely convert the above
string, "MyParam_1" to a user supplied argument (ie. "comix") before
the SQL is executed?

This capability would allow each sql script to be extendable.  It would
allow me to embed a URL with specific parameters in report OR in Wiki
pages, emails when I need to.
Thanks!
Pat

Dennis Lee Bieber wrote:
> On 23 Sep 2006 06:04:16 -0700, "pmcgover at gmail.com" <pmcgover at gmail.com>
> declaimed the following in comp.lang.python:
>
> 	Answering bottom up...
> >
> > Could this script be easily converted to Python?  How would you execute
> > the Msql command line and direct the output to a variable for display
> > in the cgi script?  Would it be possible to easily enhance this script
> > by allowing the user to pass in an SQL query parameter to the sql
> > script?  I attempted this in Perl by substituting the string "p_1" in
> > the where clause of the sql code but I could not substitute this string
> > with the value in the cgi code (ie. $query =~ s/p_1/value_variable/;).
> > Perhaps it would be easier in Python?
> >
> > Also, would the user supplied parameter be a security issue?
>
> 	Unless you duplicate the type of checking a db-api module does for
> parameterized queries -- indubitably...
>
> 	I don't do PERL, but from what I see, they are essentially doing the
> equivalent of a popen() call.
>
> -=-=-=-=-=-=-=-=-	script1.py
> import os
>
> USERID = "BestiariaCP"  #this account is a read-only, no password
> DBNAME = "bestiaria"    #used for CherryTemplate page generation
>
> #   lacking a CGI interface, I'm just going to put in a few assignments
> query = "script1.sql"
> title = "This is demonstrably nonsense"
>
> cmdline = "mysql -H -u %s %s < %s" % (USERID, DBNAME, query)
>
> #   I don't know what header and start_html() do, so just a dummy here
> print """
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>%s</title>
> </head>
>
> <body>
> """ % title
>
> rpipe = os.popen(cmdline, "r")
> results = rpipe.readlines()
> rpipe.close()
>
> print '<h3 align="center">%s</h3>' % title
> print "".join(results)
> print '<br><h4 align="center">This was a sample</h4>'
> print "</body>\n</html>"
> -=-=-=-=-=-=-=-=-=-		script1.sql
> select name, URL, description, occurs
> from comics
> order by name;
> -=-=-=-=-=-=-=-=-=-		script1.html (excluded middle)
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>This is demonstrably nonsense</title>
> </head>
>
> <body>
>
> <h3 align="center">This is demonstrably nonsense</h3>
> <TABLE
> BORDER=1><TR><TH>name</TH><TH>URL</TH><TH>description</TH><TH>occurs</TH></TR><TR><TD>A
> Doemain of Our Own</TD><TD>http://www.doemain.com/</TD><TD>The new
> family on the block.</TD><TD>Typically Friday, though some Monday and
> Wednesday
> updates</TD></TR><TR><TD>Aford</TD><TD>http://www.afordturtle.com/</TD><TD>A
> turtle, a snake, and a robin; and their life in the
> forest.</TD><TD>Daily</TD></TR>
>
> <TR><TD>Virtual Comix</TD><TD>http://comix.keenspace.com/</TD><TD>He's
> the insane rabbit next door.</TD><TD>No updates since March of
> 2003</TD></TR><TR><TD>West Corner of the
> Park</TD><TD>http://www.graphxpress.com/</TD><TD>Inspired by FurryMUCK,
> and done by Jim Groat, the creator of <i>Red
> Shetland</i>.</TD><TD>Usually late Sunday, unless a Furry Convention
> happens</TD></TR><TR><TD>Whatever
> USA</TD><TD>http://whateverusa.keenspace.com/</TD><TD>A precocious
> porcupine pup and his pals.</TD><TD>Sporadic</TD></TR><TR><TD>Wild
> Angels</TD><TD>http://www.ottercomics.com/angels/</TD><TD>It'll put the
> fur of God in you.</TD><TD>Irregular (between two and seven times each
> month)</TD></TR><TR><TD>Wyldfire</TD><TD>http://www.morgankeithstudios.com/projects_wyldfire.html</TD><TD>What
> if the cat stuck up a tree <i>is</i> the fireman?</TD><TD>Archives
> available</TD></TR></TABLE>
> <br><h4 align="center">This was a sample</h4>
> </body>
> </html>
>
> 	Seems like a lot of hassle to go through when a Python function can
> generate similar results without losing the safety of parameterized
> queries (I do hope the SQL files the CGI is specifying were pre-defined,
> and not something the user uploads <G>)
>
>
> -=-=-=-=-=-=-=-		script2.py
> import MySQLdb
>
> USERID = "BestiariaCP"  #this account is a read-only, no password
> DBNAME = "bestiaria"    #used for CherryTemplate page generation
>
> #   lacking a CGI interface, I'm just going to put in a few assignments
> queryfile = "script1.sql"
> title = "This is demonstrably nonsense"
>
> cn = MySQLdb.connect(host="localhost", user=USERID, db=DBNAME)
> cr = cn.cursor()
>
> #   I don't know what header and start_html() do, so just a dummy here
> print """
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>%s</title>
> </head>
>
> <body>
> """ % title
>
> qin = open(queryfile, "r")
> query = " ".join(qin.readlines())
> qin.close()
>
> cr.execute(query)   #no parameters assumed
>
> #   THE FOLLOWING BLOCK OF CODE COULD EASILY BE MADE A
> #   FUNCTION IN SOME HTML REPORTING MODULE AS IT IS NOT
> #   DEPENDENT UPON THE ACTUAL QUERY TO KNOW WHAT TO PRODUCE
>
> print '<h3 align="center">%s</h3>' % title
> print '<table border="1">\n<tr>',
> for fld in cr.description:
>     print "<th>%s</th>" % fld[0],
> print "</tr>"
>
> for rec in cr:
>     print "<tr>",
>     for fld in rec:
>         print "<td>%s</td>" % fld,
>     print "</tr>"
> print "</table>"
>
> #	BACK TO ORIGINAL CONTENT
>
> print '<br><h4 align="center">This was a sample</h4>'
> print "</body>\n</html>"
>
> cr.close()
> cn.close()
> -=-=-=-=-=-		USES SAME SQL FILE
> -=-=-=-=-=-=-	script2.html (excluded middle)
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>This is demonstrably nonsense</title>
> </head>
>
> <body>
>
> <h3 align="center">This is demonstrably nonsense</h3>
> <table border="1">
> <tr> <th>name</th> <th>URL</th> <th>description</th> <th>occurs</th>
> </tr>
> <tr> <td>A Doemain of Our Own</td> <td>http://www.doemain.com/</td>
> <td>The new family on the block.</td> <td>Typically Friday, though some
> Monday and Wednesday updates</td> </tr>
> <tr> <td>Aford</td> <td>http://www.afordturtle.com/</td> <td>A turtle, a
> snake, and a robin; and their life in the forest.</td> <td>Daily</td>
> </tr>
>
> <tr> <td>Virtual Comix</td> <td>http://comix.keenspace.com/</td>
> <td>He's the insane rabbit next door.</td> <td>No updates since March of
> 2003</td> </tr>
> <tr> <td>West Corner of the Park</td>
> <td>http://www.graphxpress.com/</td> <td>Inspired by FurryMUCK, and done
> by Jim Groat, the creator of <i>Red Shetland</i>.</td> <td>Usually late
> Sunday, unless a Furry Convention happens</td> </tr>
> <tr> <td>Whatever USA</td> <td>http://whateverusa.keenspace.com/</td>
> <td>A precocious porcupine pup and his pals.</td> <td>Sporadic</td>
> </tr>
> <tr> <td>Wild Angels</td> <td>http://www.ottercomics.com/angels/</td>
> <td>It'll put the fur of God in you.</td> <td>Irregular (between two and
> seven times each month)</td> </tr>
> <tr> <td>Wyldfire</td>
> <td>http://www.morgankeithstudios.com/projects_wyldfire.html</td>
> <td>What if the cat stuck up a tree <i>is</i> the fireman?</td>
> <td>Archives available</td> </tr>
> </table>
> <br><h4 align="center">This was a sample</h4>
> </body>
> </html>
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From steve at holdenweb.com  Sat Sep  9 19:36:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 10 Sep 2006 00:36:22 +0100
Subject: os.name under Win32
In-Reply-To: <4502EF49.5050006@v.loewis.de>
References: <mailman.10258.1157125352.27775.python-list@python.org>
	<4502EF49.5050006@v.loewis.de>
Message-ID: <45034FF6.5090806@holdenweb.com>

Martin v. L?wis wrote:
> Igor Kravtchenko schrieb:
> 
>>My question is whether that is supposed to be totally impossible.
>>Under Win32, we are indeed supposed to have os.name = "nt".  Is that value
>>hardcoded in Win32 binaries distribution themself?  Can it potentially
>>change?
> 
> 
> I can't test it right now, but I would expect that Cygwin Python
> binaries on Win32 have os.name == "posix".
> 
That's correct.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fccoelho at gmail.com  Thu Sep  7 16:56:39 2006
From: fccoelho at gmail.com (Flavio)
Date: 7 Sep 2006 13:56:39 -0700
Subject: xmingw and f2py
In-Reply-To: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>
References: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>
Message-ID: <1157662599.259078.81200@d34g2000cwd.googlegroups.com>


Flavio wrote:
> Hi,
>
> has anyone tried to build extensions for win32 on Linux using xmingw?
>
> I need to use f2py to compile code for the win32 platform and I want to
> do this in Linux. I googled aroung but could not find any documentation
> on this.
>
> For those who dont know xmingw is a port to linux of  mingw.
>
> any help is appreciated.
>
> Fl?vio

Since no one has responded so far, I decide to put some more data  in
this thread to encourage some comments.

I have tried to compile  the fortran code with the following line:

f2py -c --compiler=/opt/xmingw/bin/i386-mingw32msvc-gcc
--f77exec=opt/xmingw/bin/i386-mingw32msvc-g77 -m flib flib.f

the error I get is like so:

error: don't know how to compile C/C++ code on platform 'posix' with
'/opt/xmingw/bin/i386-mingw32msvc-gcc' compiler

any comments?

Fl?vio



From nogradi at gmail.com  Sun Sep  3 16:36:27 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sun, 3 Sep 2006 22:36:27 +0200
Subject: Managing database tables through web-forms (automatically)
In-Reply-To: <slrnefk681.64m.sybrenUSE@schuimige.stuvel.eu>
References: <mailman.10134.1156969994.27775.python-list@python.org>
	<slrnefbvfr.60s.sybrenUSE@schuimige.stuvel.eu>
	<mailman.10292.1157239533.27775.python-list@python.org>
	<slrnefk681.64m.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <5f56302b0609031336h6f62e778o4e2622d687979191@mail.gmail.com>

> >> Check out Django, it has a great database API and on the fly
> >> auto-generated admin.
> >
> > Just gone over the tutorial, really amazing, exactly what I need.
>
> That's exactly the response I had when I met with Django :)
>

Anyone with Django experience: how well does it do with respect to upgrades?

Suppose you have some version of python, mod_python, apache, sqlite,
pysqlite, Django and of course your application using all of these.
Then if you upgrade any one piece in this list how will the whole
thing continue to work from the point of view of your app and Django
(so I'm supposing that the only bottle neck can be your app and
Django, so if the upgrading of, say, sqlite breaks, say, pysqlite that
doesn't count)?


From bjobrien62 at gmail.com  Fri Sep 15 16:28:55 2006
From: bjobrien62 at gmail.com (SpreadTooThin)
Date: 15 Sep 2006 13:28:55 -0700
Subject: how do you convert and array of doubles into floats?
In-Reply-To: <mailman.149.1158348325.10491.python-list@python.org>
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
	<pan.2006.09.15.18.10.18.698711@gmx.net>
	<4n090tF88jknU1@uni-berlin.de>
	<mailman.149.1158348325.10491.python-list@python.org>
Message-ID: <1158352135.748507.93540@i42g2000cwa.googlegroups.com>


Tim Peters wrote:
> [Marc 'BlackJack' Rintsch]
> >> What about:
> >>
> >> b = array.array('f', a)
>
> [Diez B. Roggisch]
> > AFAIK d and f are synonym for arrays, as python doesn't distinguish
> > between these two on a type-level. And double it is in the end.
>
> While Python has no type of its own corresponding to the native C
> `float`, the `array` and `struct` modules do understand the native C
> `float` .  A Python float (same as a C `double`) gets converted to a C
> `float` when stored into one of those, and a C `float` is converted to
> a Python float (C `double`) when a value is extracted.
>
> >>> from array import array
> >>> x = 1.0000000001
> >>> x
> 1.0000000001
> >>> array('d', [x])[0]   # full precision is preserved
> 1.0000000001
> >>> array('d', [x])[0] == x
> True
> >>> array('f', [x])[0]   # trailing bits are lost
> 1.0
> >>> array('f', [x])[0] == x
> False

The point being that when I say
b.tofile(f)  I expect the write to write 32 bit floats.



From dbpokorny at gmail.com  Wed Sep 13 19:03:12 2006
From: dbpokorny at gmail.com (dbpokorny at gmail.com)
Date: 13 Sep 2006 16:03:12 -0700
Subject: Statistical distribution of object size
Message-ID: <1158188592.589956.29690@b28g2000cwb.googlegroups.com>

Hi,

In a typical heavy-use python application (say running Zope for
dukehealth.org) what is the (statistical) distribution of the the size
of objects? (i.e. start up server, stop time when it has been under
load for a few hours, and put each object into a bucket marked with the
number of bytes it is allocated, and maybe labeled with object type,
say dict, list, other). Does anyone know of any research on this?

I would do this myself, but my website only has one user...

Thanks for any info,
David



From Doug.Fort at gmail.com  Thu Sep 21 07:56:46 2006
From: Doug.Fort at gmail.com (Doug.Fort at gmail.com)
Date: 21 Sep 2006 04:56:46 -0700
Subject: Priority based concurrent execution
In-Reply-To: <mailman.398.1158833776.10491.python-list@python.org>
References: <mailman.398.1158833776.10491.python-list@python.org>
Message-ID: <1158839805.938510.190250@b28g2000cwb.googlegroups.com>


Willi Richert wrote:
> Hi,
>
> I have a simulation application (PlayerStage) in which the robot is asked
> every ~200ms for an action. In the meantime the robot has to do some
> calculation with the perception. As the calculation gets more and more time
> consuming I am thinking about outsourcing it into a concurrently running
> method. If the calculation takes too long it would be ok for the result to be
> incorporated in some future cycle of the main loop, resulting in the
> calculation being done less and less often and the main loop executing some
> stop behavior.
> My question: Is there a possibility in Python (either with the threading
> module or with Twisted's non-threading style) to prioritize the two
> (pseudo-)concurrent methods so that the main tread is further on executed
> every ~200ms and the calculation thread being executed only in "idle" time
> slots?
>
> Thanks,
> wr

Hi,

I suggest taking a look a PEP 342
http://www.python.org/dev/peps/pep-0342/. The new coroutines capability
in Python 2.5 seems to be intended for exactly what you are doing.

--
Doug Fort, Consulting Programmer
http://www.dougfort.com



From george.sakkis at gmail.com  Fri Sep  8 08:55:05 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 8 Sep 2006 05:55:05 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
Message-ID: <1157720105.181682.169290@m73g2000cwd.googlegroups.com>

Francach wrote:
> George Sakkis wrote:
> > Francach wrote:
> > > Hi,
> > >
> > > I'm trying to use the Beautiful Soup package to parse through the
> > > "bookmarks.html" file which Firefox exports all your bookmarks into.
> > > I've been struggling with the documentation trying to figure out how to
> > > extract all the urls. Has anybody got a couple of longer examples using
> > > Beautiful Soup I could play around with?
> > >
> > > Thanks,
> > > Martin.
> >
> > from BeautifulSoup import BeautifulSoup
> > urls = [tag['href'] for tag in
> >         BeautifulSoup(open('bookmarks.html')).findAll('a')]
> Hi,
>
> thanks for the helpful reply.
> I wanted to do two things - learn to use Beautiful Soup and bring out
> all the information
> in the bookmarks file to import into another application. So I need to
> be able to travel down the tree in the bookmarks file. bookmarks seems
> to use header tags which can then contain a tags where the href
> attributes are. What I don't understand is how to create objects which
> can then be used to return the information in the next level of the
> tree.
>
> Thanks again,
> Martin.

I'm not sure I understand what you want to do. Originally you asked to
extract all urls and BeautifulSoup can do this for you in one line. Why
do you care about intermediate objects or if the anchor tags are nested
under header tags or not ? Read and embrace BeautifulSoup's philosophy:
"You didn't write that awful page. You're just trying to get some data
out of it. Right now, you don't really care what HTML is supposed to
look like."

George



From fredrik at pythonware.com  Tue Sep 26 10:50:00 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 16:50:00 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz><slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu><ef5m1h$h1k$4@lust.ihug.co.nz><slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu><ef7uue$mn8$1@lust.ihug.co.nz><slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu><ef81f6$rej$3@lust.ihug.co.nz><slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu><Xns98496B28F5FBFduncanbooth@127.0.0.1><slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu><ef8cdq$fui$2@lust.ihug.co.nz><slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu><ef9nib$snj$1@lust.ihug.co.nz><slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu><efb1me$a43$1@lust.ihug.co.nz><1159279263.25441.28.camel@dot.uniqsys.com><mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efbemn$v0$1@sea.gmane.org>

Sybren Stuvel wrote:

> >>> cur.execute("select * from people where last_name in (%s)" % ','.join('%s' for i in t), t)

and now we're waiting for the "['%s']*len(t)" vs. "'%s' for i in t" benchmarks (and the
"consistency is more important than efficiency" and "creating extra objects is conceptually
wrong" followups, and the "it depends on what you mean by" followups to the followups)

</F> 





From __peter__ at web.de  Fri Sep  1 07:52:41 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 01 Sep 2006 13:52:41 +0200
Subject: Question about import and namespace
References: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>
Message-ID: <ed96t9$l81$03$1@news.t-online.com>

jdemoor at gmail.com wrote:

> I'm new to Python and have the following problem :
> I have an application started by a main.py file, which does a ' from
> module_1 import * '.
> main.py is responsible from the creation of an object which is then
> used in module_1.
> What is the best way to make that object visible in the module_1
> namespace ?
> I guess that if I do an ' import module_1 ', I can make the object
> visible with ' module_1.myObject = myObject ', but that won't work with
> the from ... import * statement.

You can do both

from module import * 
import module

as these kinds of import are not mutually exclusive.
But I recommend that you restructure your modules to avoid cyclic
dependencies.

Peter


From podi.ex at gmail.com  Wed Sep 27 21:58:43 2006
From: podi.ex at gmail.com (Podi)
Date: 27 Sep 2006 18:58:43 -0700
Subject: ctypes pointer to pointer
Message-ID: <1159408723.560232.142160@i42g2000cwa.googlegroups.com>

Hi,

I have a C function in the dll does the following:

DLL_API int dll_foo(char **data, size_t *size)
{
    strcpy(*data, "hello");
    *size = strlen(*data);

    return 0;
}


So I would call the function as such,

char data[8];
size_t size;

int status = dll_foo(&data, &size);

I have tried the following in Python but not able to get it working...
Any help would be appreciated!

from ctypes import *
mydll = windll.mydll
array = c_char * 8
data = array()
size = c_long()
status = mydll.dll_foo(byref(data), byref(size))
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
WindowsError: exception: access violation writing 0x00000000


mydll.dll_foo(POINTER(data), byref(size))
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
  File "C:\Python24\Lib\site-packages\ctypes\__init__.py", line 197, in
POINTER
    return _pointer_type_cache[cls]
TypeError: unhashable type

out = c_char_p(data.raw)
mydll.dll_foo(byref(out), byref(size))
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
ValueError: Procedure probably called with too many arguments (8 bytes
in excess)

mydll..dll_foo(out, byref(size))
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
WindowsError: exception: access violation writing 0x6C6C6568

temp = create_string_buffer('\000' * 32)
mydll.dll_foo(temp, byref(size))
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
WindowsError: exception: access violation writing 0x00000000

mydll.dll_foo(byref(temp), byref(size))
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
WindowsError: exception: access violation writing 0x00000000



From jon+usenet at unequivocal.co.uk  Mon Sep 25 10:37:01 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 14:37:01 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
Message-ID: <slrnehfqc5.6tm.jon+usenet@snowy.squish.net>

In article <ef8oqr$9pt$1 at news.albasani.net>, Georg Brandl wrote:
>> I'm sorry, that's not good enough. How, precisely, would it break
>> "existing code"? Can you come up with an example, or even an
>> explanation of how it *could* break existing code?
> 
> Is that so hard to see? If cgi.escape replaced "'" with an entity reference,
> code that expects it not to do so would break.

Sorry, that's still not good enough. Why would any code expect such a
thing?


From fredrik at pythonware.com  Wed Sep 27 13:18:53 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 19:18:53 +0200
Subject: AN Intorduction to Tkinter
In-Reply-To: <451A314F.3060703@isy.liu.se>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<451A314F.3060703@isy.liu.se>
Message-ID: <efebpt$n4v$1@sea.gmane.org>

Mikael Olofsson wrote:

> You probably mean
> 
>     http://www.pythonware.com/library/tkinter/introduction/
> 
> which is copyrighted 1999. There is also
> 
>     http://effbot.org/tkinterbook/
> 
> which I think is the most recent version of it. It states that it is 
> last updated in November 2005.

the samples in both editions works perfectly fine on all versions of 
Python published since 1999 (afaik, most of the introductory samples are 
identical in those versions; it's the reference pages that's been over- 
hauled).

</F>



From MonkeeSage at gmail.com  Wed Sep 20 04:12:29 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 20 Sep 2006 01:12:29 -0700
Subject: byte count unicode string
References: <mailman.315.1158736972.10491.python-list@python.org>
	<1158737974.490027.71860@k70g2000cwa.googlegroups.com>
Message-ID: <1158739949.355384.178660@e3g2000cwe.googlegroups.com>

John Machin wrote:
> The answer is, "You can't", and the rationale would have to be that
> nobody thought of a use case for counting the length of the UTF-8  form
> but not creating the UTF-8 form. What is your use case?

Playing DA here, what if you need to send the byte-count on a server
via a header, but need the utf8 representation for the actual data?

Regards,
Jordan



From g.brandl-nospam at gmx.net  Fri Sep  1 05:50:42 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Fri, 01 Sep 2006 11:50:42 +0200
Subject: Classes referencing each other
In-Reply-To: <mailman.10236.1157100375.27775.python-list@python.org>
References: <mailman.10236.1157100375.27775.python-list@python.org>
Message-ID: <ed8vpi$tej$1@news.albasani.net>

Manuel Bleichner wrote:
> Hello list,
> 
> I have searched for some time now, but no result...
> I'm having the following problem:
> 
> In a module I have a huge number of classes of the form:
> 
> class A(object):
>    connected_to = [B, C]
>    <other attributes...>
> 
> class B(object)
>    connected_to = [C]
>    <other attributes...>
> 
> class C(object)
>    connected_to = [A]
>    <other attributes...>
> 
> As you see, classes A and B reference classes that
> are not yet defined when the class is being defined.
> It will raise a NameError: 'B'.
> 
> I know i could solve this by leaving out the definition
> of 'connected_to' in A and attach it to the class later on by
> A.connected_to = [B, C]
> but I would like to avoid this, because in the module
> there are about 50 classes that have to be altered from time
> to time and it's just incredibly ugly if I have to look for
> the attribute definitions in more than one place.

You could move all connections to a central location after the
class definitions, such as

class A: pass
class B: pass
class C: pass

connections = {A: (B, C), B: (C,), C: (A,)}

Georg


From http  Wed Sep 13 00:14:13 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 21:14:13 -0700
Subject: What's more pythonic?
References: <pan.2006.09.13.04.08.11.294080@dcs.nac.uci.edu>
Message-ID: <7xr6ygo12i.fsf@ruckus.brouhaha.com>

Dan Stromberg <strombrg at dcs.nac.uci.edu> writes:
> 	def __cmp__(self, other):
> 		if self.a < other.a:
> 			return -1
> 		elif self.a > other.a:
> 			return 1
> 		else:
> 			return 0

I think I'd have written

           return cmp(self.a, other.a)



From fuzzyman at gmail.com  Tue Sep 26 18:04:33 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 26 Sep 2006 15:04:33 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <mailman.744.1159305439.10491.python-list@python.org>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<mailman.744.1159305439.10491.python-list@python.org>
Message-ID: <1159308273.158474.253230@m7g2000cwm.googlegroups.com>


Fredrik Lundh wrote:
> flyingisfun1217 at gmail.com wrote:
>
> > I know that the most known tkinter intro guide at the time is "An
> > Intorduction to Tkinter" by Frederick Lundh, but after trying some of
> > the examples, I noticed that they did not work
>
> what examples are this ?  are you sure it's not a problem with your IDE
> rather than a problem with Tkinter ?

I told you so. ;-)

Tis question was just asked on the py2exe mailing list. I predicted
that if it was asked here, you would respond asking exactly which
examples didn't work. :-p


Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> 
> </F>



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 06:51:22 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 12:51:22 +0200
Subject: Application logging to screen and file - any favorite modules (no
	luck on cheeseshop)
References: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
	<4nkdflFaj5doU1@individual.net>
	<mailman.494.1159005486.10491.python-list@python.org>
Message-ID: <4nkhtaFap21lU2@individual.net>

Gabriel Genellina wrote:

[log w/indentation]
> I do - what's wrong? Imagine the following on a single line...

Ah, K. Got it :)

Regards,


Bj?rn

-- 
BOFH excuse #351:

PEBKAC (Problem Exists Between Keyboard And Chair)



From duncan.booth at invalid.invalid  Fri Sep 29 03:34:17 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 Sep 2006 07:34:17 GMT
Subject: eval(source, {'builtins': {}}) archived as Faq
References: <1159484841.655115.15190@m7g2000cwm.googlegroups.com>
	<UoOdnUnUaN0vx4HYnZ2dnUVZ_o2dnZ2d@speakeasy.net>
Message-ID: <Xns984D572DCA244duncanbooth@127.0.0.1>

Erik Max Francis <max at alcyone.com> wrote:

> This is an _extremely_ bad idea.  _Never_ use eval in a case where you 
> are trying to validate input.
> 
> >>> def e(source): return eval(source, {'builtins': {}})
> ...
> >>> e('__import__("sys").exit()')
> 
> Oops, the interpreter exited.

I'm slightly surprised that nobody has yet pointed out that the OP failed 
at the very first hurdle here. If you are going to do this dangerous trick 
then 'builtins' should be spelled '__builtins__':

>>> def e(source): return eval(source, {'__builtins__': {}})

>>> e('__import__("sys").exit()')

Traceback (most recent call last):
  File "<pyshell#9>", line 1, in <module>
    e('__import__("sys").exit()')
  File "<pyshell#8>", line 1, in e
    def e(source): return eval(source, {'__builtins__': {}})
  File "<string>", line 1, in <module>
NameError: name '__import__' is not defined
>>> 

but it is still not going to stop nasty things happening, it just makes 
them a little more complex:

>>> e("[ c for c in 1 .__class__.__bases__[0].__subclasses__() if 
c.__name__=='Quitter'][0]('bang')()")



From hardcoded.software at gmail.com  Mon Sep  4 15:15:26 2006
From: hardcoded.software at gmail.com (Hardcoded Software)
Date: 4 Sep 2006 12:15:26 -0700
Subject: Test for number?
References: <1157390891_40515@sp6iad.superfeed.net>
Message-ID: <1157397326.004334.13890@i42g2000cwa.googlegroups.com>


Dr. Pastor wrote:
> In the following code I would like to ascertain
> that x has/is a number. What the simplest TEST should be?
> (Could not find good example yet.)
> ---
> x=raw_input('\nType a number from 1 to 20')
> if TEST :
> 		Do_A
> else:
> 		Do_B
> ---
> Thanks for any guidance.
>
> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
> ----= East and West-Coast Server Farms - Total Privacy via Encryption =----

To test if it *is* a number, the solution is pretty simple (s.isdigit()
or an int(s) in a try..except ValueError), but if you want to test if
it is or *has* a number, I think that the simplest solution would be a
regexp:

import re
re_has_digit = re.compile(r'\d+')
try:
    digits = re_has_digit.findall(input)[0]
    number = int(digits)
    print "%d is a number." % number
except IndexError:
    print "'%s' has no number in it." % input

I didn't try it, but it should work.



From peace.is.our.profession at gmx.de  Wed Sep 27 03:29:10 2006
From: peace.is.our.profession at gmx.de (Mirco Wahab)
Date: Wed, 27 Sep 2006 09:29:10 +0200
Subject: Battlefield Weapon Popularity Trend (was: Computer Language Popularity
	Trend)
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <efd9g0$sn5$1@mlucom4.urz.uni-halle.de>

Thus spoke Xah Lee (on 2006-09-27 05:03):

> This page gives a visual report of computer languages's 
> popularity, as indicated by their traffic level in newsgroups. 
> ...
> http://xahlee.org/lang_traf/index.html

When the Samurai of medieval Japan were confronted
with new 'battlefield language', e.g. early Shotguns,
they resisted because one could push any peasant
behind a gun -- thus nullifying the result of
the Samurai Art of Warfare that required a life
full of learning - in the end wiping out a
complete culture.

Same trend here - the reason is: 'cost' ;-)


Regards & scnr

Mirco

f'up: clpm, clp




From ilias at lazaridis.com  Tue Sep 26 14:51:20 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 26 Sep 2006 11:51:20 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <I35Sg.8107$Ij.2250@newssvr14.news.prodigy.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<I35Sg.8107$Ij.2250@newssvr14.news.prodigy.com>
Message-ID: <1159296680.869854.184450@i42g2000cwa.googlegroups.com>

James Stroud wrote:
> Ilias Lazaridis wrote:
...

> > I am wondering that other users are not annoyed by this reduced
> > readability.
>
> I'm sure its quite unpopular to agree with you, but I do. I am
> tremendously annoyed the format of the interactive interpreter. Lovely
> would be output as you describe, but with the option, when selecting for
> copy-paste, to include the prompts and/or your suggested whitespace
> margin (e.g. select in doctest mode).
>
> James

I am not sure I understand what you meen with the option.

copy includes both, the ">>>" and the "  :"

possibly you can elaborate a little, as this could be an important
factor.

-

As for a solution to the output, just follow this ticket:

http://case.lazaridis.com/ticket/10

.



From MonkeeSage at gmail.com  Fri Sep 29 15:31:58 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 29 Sep 2006 12:31:58 -0700
Subject: retry in exception
References: <451d4294$1@news.vo.lu>
	<slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
	<1159555060.721235.119530@b28g2000cwb.googlegroups.com>
	<mailman.972.1159557592.10491.python-list@python.org>
Message-ID: <1159558318.261643.167600@i42g2000cwa.googlegroups.com>

Everyone wrote:
> [cool stuff]

Ps. I've only used retry a handful of times in about 3 or 4 years of
using ruby; I wasn't advocating it or criticizing python, just trying
to explain the OPs request.

Regards,
Jordan



From http  Fri Sep 29 13:04:15 2006
From: http (Paul Rubin)
Date: 29 Sep 2006 10:04:15 -0700
Subject: Making sure script only runs once instance at a time.
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<mailman.949.1159543590.10491.python-list@python.org>
	<W53645725.803.1323.1@mx-extra>
	<mailman.957.1159547987.10491.python-list@python.org>
	<R53646951.569.1564.1@mx-extra>
	<mailman.960.1159549187.10491.python-list@python.org>
Message-ID: <7xr6xuy580.fsf@ruckus.brouhaha.com>

"Tim Williams" <tim at tdw.net> writes:
> That's the same kind of principle as my posted snippet,  it doesn't
> rely on the file's presence or absence as such.  It only cares when
> the file exists *and* is held open by another process.    When the
> process exits,  the lock ends without needing to clean up.
> 
> It works on Windows, but that doesn't help the OP :)

Huh?  Fcntl is on linux.


From skip at pobox.com  Wed Sep 27 14:24:21 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 27 Sep 2006 13:24:21 -0500
Subject: R.S.I. solutions?
In-Reply-To: <451AB2E6.4060301@harvee.org>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
	<4nqrt0Fbp16mU1@uni-berlin.de>
	<slrnehi8l8.4bt.nick@irishsea.home.craig-wood.com>
	<mailman.786.1159349176.10491.python-list@python.org>
	<5ZxSg.2103$Y24.1374@newsread4.news.pas.earthlink.net>
	<451AB2E6.4060301@harvee.org>
Message-ID: <17690.49621.569457.357251@montanaro.dyndns.org>


    Eric> The problem I have with current keyboards is that there is so much
    Eric> resistance on the keystroke that you have to force the key all the
    Eric> way down until you hit bottom hard.  At least, that's the way it
    Eric> feels to my fingers.

Depends on the manufacturer I think.  Back around y2k I got a Dell laptop
and ordered the keyboard/mouse/monitor kit with it.  The keyboard was a
Dell-branded Belkin.  It was a piece of crap as far as I was concerned.  The
keys required a huge amount of force to depress.  My wrists were killing me
within a few days, so I just started using the laptop keyboard, even when I
wasn't "roaming".

The two computers in front of me right now are both Dells with two slightly
different Dell-branded no-name Chinese keyboards.  Both work fine for me.  I
see that both also carry awarning: "Improper or prolonged keyboard use may
result in injury".

Skip


From fredrik at pythonware.com  Thu Sep 14 03:25:48 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 09:25:48 +0200
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <wr4Og.943$TV3.904@newssvr21.news.prodigy.com>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>	<mailman.20.1158149440.10491.python-list@python.org>	<NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>	<mailman.46.1158171607.10491.python-list@python.org>
	<wr4Og.943$TV3.904@newssvr21.news.prodigy.com>
Message-ID: <eeb05s$g0i$2@sea.gmane.org>

David J. Braden wrote:

> Worked great. This "exercise" has also raised my comfort level with the 
> whole endeavor. To get rebaseall going, I was told to install the 
> *entire* cygwin package. Good time to paint a couple of rooms, clean the 
> gutters, ...

or get a more convenient distribution.

</F>



From deets at nospam.web.de  Sat Sep  9 05:38:24 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 09 Sep 2006 11:38:24 +0200
Subject: Unicode / cx_Oracle problem
In-Reply-To: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
Message-ID: <4mfgcgF60ounU1@uni-berlin.de>

Richard Schulman schrieb:
> Sorry to be back at the goodly well so soon, but...
> 
> ...when I execute the following -- variable mean_eng_txt being
> utf-16LE and its datatype nvarchar2(79) in Oracle:
> 
>  cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
>      VALUES (:id,:mean)""",id=id,mean=mean)
> 
> I not surprisingly get this error message:
> 
>  "cx_Oracle.NotSupportedError: Variable_TypeByValue(): unhandled data
> type unicode"
> 
> But when I try putting a codecs.BOM_UTF16_LE in various plausible
> places, I just end up generating different errors.

Show us the alleged plausible places, and the different errors. 
Otherwise it's crystal ball time again.

Diez


From hancock at anansispaceworks.com  Mon Sep 11 09:21:38 2006
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Mon, 11 Sep 2006 08:21:38 -0500
Subject: Can I make unicode in a repr() print readably?
In-Reply-To: <4503D24C.8020905@v.loewis.de>
References: <mailman.218.1157834965.5279.python-list@python.org>
	<4503D24C.8020905@v.loewis.de>
Message-ID: <450562E2.7090705@anansispaceworks.com>

Martin v. L?wis wrote:
>  Terry Hancock schrieb:
> > Or, put another way, what exactly does 'print' do when it gets a
> > class instance to print? It seems to do the right thing if given a
> > unicode or string object, but I cant' figure out how to make it do
> > the same thing for a class instance.
>
>  It won't. PyFile_WriteObject checks for Unicode objects, and whether
>  the file has an encoding attribute set, and if so, encodes the
>  Unicode object.
>
>  If it is not a Unicode object, it falls through to PyObject_Print,
>  which first checks for the tp_print slot (which can't be set in
>  Python), then uses PyObject_Str (which requires that the __str__
>  result is a true byte string), or PyObject_Repr (if the RAW flag
>  isn't set - it is when printing). PyObject_Str first checks for
>  tp_str; if that isn't set, it falls back to PyObject_Repr.

>  You can save some typing, of course, with a helper function:
>
>  def p(o): print unicode(o)

Yeah, that's what I've done as it stands.  I think it's actually fewer
keystrokes that way, but it is still inconsistent* with other objects,
of course.

>  I agree that this is not optimal; contributions are welcome. It would
>  probably be easiest to drop the guarantee that PyObject_Str returns a
>  true string, or use _PyObject_Str (which does not make this
>  guarantee) in PyObject_Print. One would have to think what the effect
>  on backwards compatibility is of such a change.

Ah, contribute to Python itself.  I'll have to think about it -- I don't do
a lot of C programming these days, but it sounds like an idea.

I don't know about the backwards compatibility issue. I'm not sure
what would be affected.  But "print" frequently generates encoded
Unicode output if the stream supports it, so there is no guarantee
whether it produces unicode or string output now.  I think it's clear
that str() *must* return an ordinary Python string.

I think what would make sense is for the "print" statement to attempt
to call __unicode__ on an instance before attempting to call __str__
(just as it currently falls back from __str__ to __repr__).  That seems like
it would be pretty consistent, right?

Cheers,
Terry

*Okay, actually it is perfectly consistent in a technical sense, but not in
the utility, "this is what you do to examine the object", sense.

-- 
Terry Hancock (hancock at AnansiSpaceworks.com)
Anansi Spaceworks http://www.AnansiSpaceworks.com



From steve at holdenweb.com  Wed Sep 13 23:51:28 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 23:51:28 -0400
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
Message-ID: <eeajim$far$1@sea.gmane.org>

Michael wrote:
> Hi All,
> 
> I've received (via UDP) a null terminated string and need to convert it
> into a Python string. Can anyone tell me how this is done? If it helps,
> I know the number of characters in the string.
> 
> Thanks,
> M. McDonnell
> 
Have you received this string in Python or in C? If the former, then 
just throw away the last character of the string you've received and 
you're done!

s = s[:-1]

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rw at smsnet.pl  Mon Sep 11 15:13:40 2006
From: rw at smsnet.pl (Rob Wolfe)
Date: Mon, 11 Sep 2006 21:13:40 +0200
Subject: best way of testing a program exists before using it?
References: <mailman.256.1157987147.5279.python-list@python.org>
	<1157989290.649744.167690@h48g2000cwc.googlegroups.com>
	<mailman.266.1157990125.5279.python-list@python.org>
Message-ID: <87irjuqkrf.fsf@smsnet.pl>

Steve Holden <steve at holdenweb.com> writes:

> Rob Wolfe wrote:
>> Hari Sekhon wrote:
>>
>>>I am writing a wrapper to a binary command to run it and then do
>>>something with the xml output from it.
>>>
>>>What is the best way of making sure that the command is installed on the
>>>system before I try to execute it, like the python equivalent of the
>>>unix command "which"?
>>>
>>>Otherwise I'd have to do something like:
>>>
>>>if os.system('which somecommand') != 0:
>>>    print "you don't have %s installed" % somecommand
>>>    sys.exit(1)
>>>
>>>I know that isn't portable which is why a python solution would be
>>>better (although this will run on unix anyway, but it'd be nice if it
>>>ran on windows too).
>> IMHO this is pretty portable:
>>
>>>>>def is_on_path(fname):
>> ....     for p in os.environ['PATH'].split(os.pathsep):
>> ....             if os.path.isfile(os.path.join(p, fname)):
>> ....                     return True
>> ....     return False
>>
> Except that the fname will then have to be a ".exe" on Windows and not
> on Unix.

My function doesn't check if the file is executable at all.
This function checks only if the file exists on the PATH. 
I know it isn't a perfect solution but it is portable.

-- 
Regards,
Rob


From horpner at yahoo.com  Thu Sep  7 14:53:11 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 7 Sep 2006 20:53:11 +0200
Subject: 3 Simple Questions About Python/IDLE
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<IGYLg.4603$v%4.3327@newsread1.news.pas.earthlink.net>
Message-ID: <slrneg0ql5.1mc.horpner@FIAD06.norwich.edu>

On 2006-09-07, Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:
> On 7 Sep 2006 06:53:44 -0700, "Omar" <outstretchedarm at hotmail.com>
> declaimed the following in comp.lang.python:
>> 1) why don't python / idle use numbered lines in their
>> scripting, like basic?  how do you keep track of large batches
>> of code without them?
>
> Because BASIC was created in the days of paper teletypes with
> minimal editors. In BASIC, you would correct a line by retyping it with
> the line number and the interpreter was responsible for "reordering" the
> lines in memory. You could actually type a program in from last line to
> first (ie, upside down) and it would run.
>
> NO other language that I know of uses line numbers to control
> source code order. Heck, Visual BASIC doesn't use line numbers
> either (I don't recall if AmigaBASIC required them either).

(Nope.)

-- 
Neil Cerutti


From fabianosidler at gmail.com  Thu Sep 21 20:15:49 2006
From: fabianosidler at gmail.com (Fabiano Sidler)
Date: Fri, 22 Sep 2006 00:15:49 +0000
Subject: Are the CALL_FUNCTION_* opcodes ever used?
Message-ID: <200609220015.49790.fabianosidler@gmail.com>

Hi folks!

Studying python byte code I encountered an interesting issue: there is no
matter, which one of the following function calls I compile:

1: func('foo','bar',foo='bar')
2: func('foobar')
3: func(foo='bar')

The compiler always uses the simple CALL_FUNCTION for all of the source
examples above. While this is fine for me (since the labels in Python/ceval.c
for the other 3 opcodes lead to the same code anyway), I'm curious to know
if there is a case where the compiler really uses the CALL_FUNCTION_* opcodes
or if we could silently remove these opcodes without breaking anything?

Greetings,
Fips


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 16 19:01:18 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 17 Sep 2006 01:01:18 +0200
Subject: wxTimer problem
References: <1158349650.327255.135060@k70g2000cwa.googlegroups.com>
	<4n0fm7F89kp7U1@individual.net>
	<1158353989.047997.284750@i42g2000cwa.googlegroups.com>
Message-ID: <4n3e1rF7uhv7U1@individual.net>

abcd wrote:

> thanks for NO help.....

Know what? I knew you were going to answer like that.

Regards,


Bj?rn

-- 
BOFH excuse #415:

Maintenance window broken



From MonkeeSage at gmail.com  Mon Sep 25 15:59:48 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 25 Sep 2006 12:59:48 -0700
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
Message-ID: <1159214388.394027.119040@k70g2000cwa.googlegroups.com>

hg wrote:
> Why would they want to make such an obscure API ? ... didn't they have
> Python to learn from (I am truly amazed - nothing cynical ...just ...
> why ?!!!!)

In ruby there are several special literal notations, just like python.
In ruby it goes like this:

%{blah} / %Q{blah} # same as "blah" but igornes " and '
%q{blah} # same as 'blah' but no interpolation
%w{blah blah} # same as "blah blah".split
%r{blah} # same as /blah/
%x{ls} # same as `ls`

Sometimes they are very useful, and sometimes they are cumbersome. It's
up to the programmer to implement them effectively.

Regards,
Jordan



From kay.schluehr at gmx.net  Mon Sep 18 01:35:48 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 17 Sep 2006 22:35:48 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158532122.782673.140400@i3g2000cwc.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
	<1158507849.378435.47080@d34g2000cwd.googlegroups.com>
	<mailman.207.1158509454.10491.python-list@python.org>
	<75GdnRSl_tvnI5DYnZ2dnUVZ_qCdnZ2d@speakeasy.net>
	<1158532122.782673.140400@i3g2000cwc.googlegroups.com>
Message-ID: <1158557748.049601.211770@e3g2000cwe.googlegroups.com>


Brad Allen wrote:
> A.M. Kuchling wrote:
> > However, this code isn't used at the moment because I have no idea
> > what to do about version controlling the links.  Do we just use the
> > current links whenever the HTML is generated?  Make a copy of the list
> > and commit them into SVN, so the links cease to be updated but are
> > consistent for a given version's docs?  It would be nice to figure out
> > what to do.
>
> That sounds like another good reason to handle the examples at
> python.org, but it argues against a wiki approach for examples. Maybe
> the examples should be part of the same SVN repository; if they are
> implemented as doctests they can be validated before each new release.
> On the other hand, that probably only works for very simple examples;
> I've seen some extensive examples at in the Cookbook that might not fit
> well into a doctest.

doctest is not the only way to present examples in code. The other one
is simply a link to the lib/test directory and the approriate
test_<module_name>.py module. Reading testcases is often the only
source I have when I want to understand how something works ( exercise:
try to create a code object from scratch  using the new module and the
desciption provided in the docs ). I find Cookbook recipes a little
over the top for basic use pattern. They are usually not that well
factored that they present a single idea precisely.

Since we are at it: what about two additional directories within the
Python system namely "site-docs" and "site-test" for all kinds of
docs/tests of 3rd party modules/packages? Installing docs using
distutils might automatically update a single HTML site that contains
references to the package docs ( de-installing will cause another
update ).

Python24+-docs
                 +-site-docs
               +-lib
                  +- test
                      +- site-test

or alternatively:

Python24+-lib
                 +-site-packages
                   +- site-docs
                   +- site-test

Executing all testcases of the stdlib already uses reflection over the
modules provided in the directory. Same basic mechanism could be
applied to site-test.

Note that once such an architecture is fixed there is no reason (
besides bandwidth of course ) not to use svn to manage user projects
within site-space completely. I would go even further and suggest to
implement some svn management functions within the Python console such
as:

>>> svn.show_projects()
>>> proj = svn.open_project(project_name)
>>> proj.checkin(module_name)
>>> proj.checkin_all()
>>> svn.checkout(another_project)
etc.



From steve at holdenweb.com  Wed Sep 13 14:59:56 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 14:59:56 -0400
Subject: page contents are not refreshed
In-Reply-To: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
References: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
Message-ID: <ee9ke1$i24$1@sea.gmane.org>

Gleb Rybkin wrote:
> when running apache, mod_python in windows.
> 
> This looks pretty strange. Creating a simple python file that shows
> current time will correctly display the time in apache the first time,
> but freezes afterwards and shows the same time on all subsequent clicks
> as long as the file is not modified.
> 
> Any ideas what's wrong? Thanks.
> 
> from mod_python import apache
> from time import strftime, gmtime
> 
> curtime = strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
> def handler(req):
>      req.content_type = "text/plain"
>      req.send_http_header()
>      req.write(str(curtime))
>      return apache.OK
> 
Try moving the assignment to curtime inside the handler function so it 
isn't just executed once when the module is imported ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Sat Sep 30 22:11:41 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 01 Oct 2006 02:11:41 GMT
Subject: How to Catch 2 Exceptions at once?
In-Reply-To: <mailman.1021.1159666380.10491.python-list@python.org>
References: <mailman.1021.1159666380.10491.python-list@python.org>
Message-ID: <xtFTg.6454$TV3.3524@newssvr21.news.prodigy.com>

Gregory Pi?ero wrote:
> How can I catch 2 exceptions at once for example:
> 
>        try:
>            self.gses = opener.open(req)
>        except (urllib2.HTTPError,urllib2.URLError):
>            do something..
> 
> Seems to work, but how do I also get information about the error?
> 
py> try:
...   raise ValueError, 'Illegal value for your shoe size!'
... except (IndexError, ValueError), e:
...   print e
...
Illegal value for your shoe size!


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From 2006 at jmunch.dk  Sat Sep 23 11:18:01 2006
From: 2006 at jmunch.dk (Anders J. Munch)
Date: Sat, 23 Sep 2006 17:18:01 +0200
Subject: Relative import first impressions
Message-ID: <4515506f$0$4162$ba624c82@nntp02.dk.telia.net>

Now 2.5 is out, and we have a syntax for explicit relative imports
(PEP 328, http://www.python.org/dev/peps/pep-0328/, in case anyone
wasn't paying attention).  The long-term plan is that the classical
import syntax becomes absolute import only, so that all imports are
explicitly one or the other.

You can only use relative import from within packages.  Trying to
import a top-level module relatively from within same directory,
produces the exception "ValueError: Relative importpath too deep".

There's a certain logic to that: You can just omit "from ." and do a
regular absolute import.  However, that spells bad news for modules
that are both contained within packages, and executed from the top
level as well.

Accessing the same module both from within a package and outside it
may seem like a bad idea, and in many ways, it is.  You may get a
double import of the same module with subtle, mysterious bugs to
follow, when e.g. you suddenly have two copies of the "same" class,
and isinstance(obj,mymodule.Cls) fails unexpectedly.

But it's quite common all the same: The
    if __name__ == "__main__":
idiom is often used, even within packages.  But that is currently
incompatible with using relative imports.  It seems to me that unless
we rethink the main idiom competely (which may not be a bad idea by
the way, for the reasons given above), relative imports at the top
level will need to be allowed.

Another addition I'd like to see it the "import .foo" form.  Currently
only "from"-imports have a relative form.  The argument against is
that "import X" binds the name X, and it's not clear which name the
relative import binds.

I move that it's blindingly obvious: "import .foo" binds "foo",
equivalent to "from . import foo".  Did anyone really expect the name
".foo" to be bound?

It's not a big deal though, as you only need to type "from ." once per
module anyway.  Using another improvement in 2.5, you can now write:

from . import (
     this,
     that,
     )

- Anders


From rdiaz02 at gmail.com  Thu Sep 28 11:23:25 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Thu, 28 Sep 2006 17:23:25 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <efgld3$sc3$1@sea.gmane.org>
References: <451b2c0b@news.bezeqint.net>
	<1159404316.140577.68700@b28g2000cwb.googlegroups.com>
	<efgld3$sc3$1@sea.gmane.org>
Message-ID: <624934630609280823o322f0c17qc324c03ca089fbeb@mail.gmail.com>

Going back to the original question, a related question: does anybody
know why there are so few books on data structures and algorithms that
use Python?

I remember that, at least ~ 12 years ago there were many (and very
good) books that used Pascal for this topic. So when I did my own
search for one in Python (just for my own consumption and
enlightnment) and could only find the same one as the original poster
of this thread [1], I was very surprised. No publishers have felt the
need to fill this gap?



Best,

R.

[1] http://thread.gmane.org/gmane.comp.python.general/486698/focus=486698
 "Data Structures and Algorithms with Object Oriented Design Patterns"
(http://www.brpreiss.com/books/opus7/html/book.html) and was surprised.



-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From no at spam.com  Mon Sep  4 06:25:22 2006
From: no at spam.com (Mike Krell)
Date: Mon, 04 Sep 2006 05:25:22 -0500
Subject: What are super()'s semantics?
Message-ID: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>

I'm reading Alex Martelli's "Nutshell" second edition.  In the section
called "Cooperative superclass method calling", he presents a diamond
inheritance hierachy:

class A(object):
    def met(self):
        print "A.met"
class B(A):
    def met(self):
        print "B.met"
        A.met(self)
class C(A):
    def met(self):
        print "C.met"
        A.met(self)
class D(B,C):
    def met(self):
        print "D.met"
        B.met(self)
        C.met(self)


D().met() # essentially "D B A C A"

Martelli says "In this code, when we call D().met(), A.met ends up being
called twice. How can we ensure that each ancestor's implementation of
the method is called once, and only once? The solution is to use
built-in type super. super(aclass, obj), which returns a special
superobject of object obj. When we look up an attribute (e.g., a method)
in this superobject, the lookup begins after class aclass in obj's
MRO. We can therefore rewrite the previous code as:

class A(object):
    def met(self):
        print "A.met"

class B(A):
    def met(self):
        print "B.met"
        super(B, self).met()

class C(A):
    def met(self):
        print "C.met"
        super(C, self).met()
        
class D(B,C):
    def met(self):
        print "D.met"
        super(D, self).met()

D().met() # essentially "D B C A"


Now, D().met() results in exactly one call to each class's version of
met."

I see that this is true, but I am confused by the explanation (the bit
about truncated lookup in the class's MRO).  In particular:

1. The super() call in D somehow invokes both parent class methods
   instead of stopping when the method is resolved in B. This has
   nothing to do with truncated lookup per se.  Why isn't the output "D
   B A"?

2. If I understand correctly, B's MRO is (B, A) and super(B, self) would
   have an MRO of (A).  Similarly for C.  So it seems that by the above
   explanation, A.met() would still be invoked twice (assuming both
   B.met() and C.met() are invoked).

I guess I can just take it on faith that super() invokes everything once
and only once, but I'd rather understand how.  Can someone point me to a
more complete description of super()'s semantics and how they work?

BTW, the official docs are even worse in this regard.  AFAICT, they
essentially say that super() returns a superclass with no discussion of
diamond inheritance or any hint of how the semantics of super(B,
self).met() would be any different than those of A.met(self).

This seems like very important functionality to be documented in the
official docs so poorly.

   Mike


From sjmachin at lexicon.net  Thu Sep 14 05:20:34 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 02:20:34 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <mailman.66.1158218413.10491.python-list@python.org>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
Message-ID: <1158225634.359349.187610@k70g2000cwa.googlegroups.com>


Fredrik Lundh wrote:
> Michael wrote:
>
> > Thanks for your reply. Just wondering... how are Python strings
> > formatted? Evidently they're not 0 terminated.
>
> have you tried *printing* the thing you got via UDP?
>
> to get a programmer-friendly representation of an arbitrary object, use
>
>      print repr(obj)
>
> (where obj is your string, in this case).
>

Probably not; there was no indication after the two messages where I
mentioned repr :-)



From g.brandl-nospam at gmx.net  Sun Sep 24 06:37:08 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 24 Sep 2006 12:37:08 +0200
Subject: webbrowser module's Firefox support
In-Reply-To: <1159053936.813103.38840@d34g2000cwd.googlegroups.com>
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
	<1159053936.813103.38840@d34g2000cwd.googlegroups.com>
Message-ID: <ef5n4m$v08$1@news.albasani.net>

Dustan wrote:
> MonkeeSage wrote:
>> Dustan wrote:
>> > I did do a search here, but came up empty-handed. Can anyone tell me
>> > how to get the webbrowser module to recognize firefox's existence,
>> > given this information?
>>
>> Looks like it is checking %PATH% for firefox.exe. Try:
>>
>> >>> import os
>> >>> os.environ["PATH"] = r"C:\Program Files\Mozilla Firefox;"
>> >>> import webbrowser
>> >>> webbrowser._browsers
>>
>> Regards,
>> Jordan
> 
> Thanks! But I'm still getting an error message:
> 
>>>> import webbrowser
>>>> webbrowser._browsers
> {'windows-default': [<class 'webbrowser.WindowsDefault'>, None],
> 'firefox': [None, <webbrowser.BackgroundBrowser object at 0x00BAC8D0>]}
>>>> cont=webbrowser._browsers['firefox'][1]
>>>> cont
> <webbrowser.BackgroundBrowser object at 0x00BAC8D0>
>>>> cont.open("http://www.google.com")
> 
> Traceback (most recent call last):
>   File "<pyshell#10>", line 1, in <module>
>     cont.open("http://www.google.com")
>   File "C:\Python25\lib\webbrowser.py", line 185, in open
>     p = subprocess.Popen(cmdline, close_fds=True, preexec_fn=setsid)
>   File "C:\Python25\lib\subprocess.py", line 551, in __init__
>     raise ValueError("close_fds is not supported on Windows "
> ValueError: close_fds is not supported on Windows platforms
> 
> Looking in the docs on subprocess.Popopen
> (http://docs.python.org/lib/node529.html), it says "If close_fds is
> true, all file descriptors except 0, 1 and 2 will be closed before the
> child process is executed. (Unix only)". I have to be frank; I have no
> idea what this means. What should I do to fix this?

This is a bug, and has now been fixed in SVN. As a workaround, you can
edit the webbrowser.py file and remove the close_fds and preexec_fn arguments
to Popen.

Georg


From escalation746 at yahoo.com  Thu Sep 21 07:23:40 2006
From: escalation746 at yahoo.com (robin)
Date: Thu, 21 Sep 2006 12:23:40 +0100
Subject: ANN: Pocoo (bulletin board software) 0.1 beta released
References: <ee23mt$hd8$2@news.albasani.net>
Message-ID: <lhs4h21cu5hgcoitkk4dtlaj0ed70q418q@4ax.com>

Georg Brandl <g.brandl-nospam at gmx.net> wrote:
>The 0.1 release is not meant to be feature complete. It's more like a preview
>to show off what's already there. If you like the idea, *feel free to join us!*

Looks very nice so far. Will fill an important gap in Python apps.

Oh, and you've been blogged:
http://diagrammes-modernes.blogspot.com/

-----
robin
noisetheatre.blogspot.com


From wildemar at freakmail.de  Wed Sep 20 21:19:53 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 03:19:53 +0200
Subject: Need some help here
In-Reply-To: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <4511E8B9.4050606@freakmail.de>

Kareem840 wrote:
> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.
> 
And I need to get a bus. I mean literally. It's the best.
So chip in a few cents, will you?
wildemar at freakmail.de's the address.
I swear I will use it to buy a bus.

wildemar
(sorry to be a jerk, I'm tired but can't sleep; too many money woes)


From igouy at yahoo.com  Fri Sep  1 11:56:18 2006
From: igouy at yahoo.com (Isaac Gouy)
Date: 1 Sep 2006 08:56:18 -0700
Subject: Duck typing alows true polymorfisim
In-Reply-To: <04sjs3-8c2.ln1@sirius.tg00suus7038.net>
References: <1156532721.879808.40990@i3g2000cwc.googlegroups.com>
	<1156533807.630662.12330@i42g2000cwa.googlegroups.com>
	<12fblk87ppk7ief@corp.supernews.com>
	<9l9hs3-64h.ln1@sirius.tg00suus7038.net>
	<uzmdklve4.fsf@hotmail.com>
	<04sjs3-8c2.ln1@sirius.tg00suus7038.net>
Message-ID: <1157126178.616755.119210@i42g2000cwa.googlegroups.com>

The Ghost In The Machine wrote:
> In comp.lang.java.advocacy, Tor Iver Wilhelmsen
> <jadedgamer at hotmail.com>
>  wrote
> on 31 Aug 2006 18:31:15 +0200
> <uzmdklve4.fsf at hotmail.com>:
> > The Ghost In The Machine <ewill at sirius.tg00suus7038.net> writes:
> >
> >> Also, one language is very conspicuous by its absence: C#.
> >
> > He does not date any of the updates, so it's unclear how recently it
> > has been updated (a lot of the web is stale, like a rotting tree in a
> > forest.)
>
> Aye; my webpage has a similar problem. :-)
>
> >
> >> AmigaBasic -- Microsoft-sponsored Amiga variant
> >
> > Well, at the time Microsoft were the makers of the de-facto BASIC
> > implementations - M-BASIC for CP/M, the various variants in VC-20 and
> > C-64 and later derivates of those, and many other home computers.
> > "Sponsored" should probably be "created" instead - I assume they were
> > paid for the job.
>
> OK, "created" then. :-)
>
>
> >
> >> Also, Java now has templates. (The implementation is pretty gross
> >> and has some quirks, IMO, but it's better than nothing.) C++ has a
> >> typing system ("type_of" or some such; I'd have to look) which
> >> yields little more than the mangled type name and static inheritance
> >> testing capabilities. Of course C++ doesn't have dynamic inheritance
> >> anyway.
> >
> > There's the virtual stuff, and you could conceivably implement dynamic
> > inheritance via the bare-bones C layer - like function pointers. The
> > type information in C++ (RTTI) is optional.
>
> Oh yeah, that's true.  Still not all that dynamic, though, unless
> one recompiles.
>
> >
> >> Dynamic type creation. I don't know if Java has this or not. One can
> >> of course attempt bytecode synthesis -- I think that's what BCEL
> >> uses -- but that's a bit of a hack.
> >
> >     Groovy could possibly be used for that; also IIRC Java 6 adds some
> > features for that. I seem to recall security implications being one
> > reason this ability wasn't included from the start.
>
> Not familiar with Groovy; I'll have to look into that.
> It's amazing what's out there; one of the problems with
> Free Open Source Software (FOSS) is that there's multiple
> choices for the obvious stuff. :-)
>
> >
> >> Dynamic method creation. Java does *not* have this. AIUI
> >> Smalltalk-80 does; one can take an existing class and add methods
> >> thereto.
> >
> > Yes, but that's because a Smalltalk program lives inside a big binary
> > "image" that is mutable. Woe unto you if that big binary file gets
> > corrupted.
>
> Indeed.
>
> I for one would want Smalltalk to have the ability to
> transcript certain messages but would have to look.
> (One might call that an edit audit trail.)

The comments "Woe unto you if that big binary file gets corrupted" are
plain wrong.

For at least 25 years (and perhaps back to Smalltalk-72?) Smalltalk
implementations have comprised an image file, a sources file, and a
change log. The change log records changes to objects, as Smalltalk
statements that can be replayed to reproduce those changes - and as
Smalltalk classes and methods are just objects, that means code changes
are recorded in the change log and can be reproduced even if the image
file is somehow corrupted.

By the late '80s, commercial Smalltalk development had adopted tightly
integrated, fine grained, multi-user version control - everytime a
method was compiled a new edition of the method was recorded in the
version control system, which really helps continuous integration
across the team.

>
> >
> >> Dynamic method deletion. I for one might only want this in the
> >> context of a "sandbox" but if one can create methods, one should be
> >> able to delete them as well if only because of undo.
> >
> > The problem with deleting a method is whether the runtime can handle
> > it: Smalltalk has doesNotUnderstand:#aMessage, Java has
> > NoSuchMetohdError - what does C++ do? A zeroed virtual method would
> > cause a pure virtual method call error, which I guess C++ programmers
> > are trained to take into account.
>
> I'd frankly have to look.  My thinking is that it's a message followed
> by an exit().
>
> > Also, if class A has a method and
> > you delet it in subclass B, it breaks the Liskov Substitution
> > Principle, there B should be able to function where an A is wanted.
>
> Heh...an interesting name; I'm not familiar with that
> issue.  Of course it's important for B to be an A in
> many cases, though AFAICT usually what happens is that
> A declares a method virtual with an implementation and B
> munges it.
>
> >
> >> Dynamic method rename. This could lead to much madness but this
> >> might be useful during sandboxing.
> >
> > A method's name and its "address" are distinct, but for dynamic method
> > dispatch, what about any other code that doesn't know the new name but
> > assumes the method is called the same?
>
> What indeed?  Much madness.
>
> >
> >> Dynamic inheritance. For those languages that support inheritance
> >> one might liken it to changing what the language inherits or
> >> implements on the fly. I don't know of any language apart from
> >> Smalltalk that can even think about allowing dynamic inheritance,
> >> but it's a thought.
> >
> > If you can change a Perl class, er, module's @INC array I think that
> > would support it.
> >
> >> Operator overload (e.g., C++'s operator ==()).
> >
> > Or rather "dotless/prefix method invocation with the added baggage of
> > precedence rules". Smalltalk solves this by 1) not having those
> > precedence rules, 2) have dotless method invocation and 3)
>
> ...?
>
> I'll admit Smalltalk has a lot of things, but popularity isn't
> unfortunately one of them. :-/
>
> >
> >>
> >> Name overload. C does not have it; C++ and Java do. I suspect Ruby
> >> and Python do as well.
> >
> > Are you referring to namespaces, ie. namespace isolation?
>
> Hmm...that could use clarification.  The general idea is that
> Java and C++ allow
>
> void routine1(const char *);
> void routine1(int);
> void routine1(double);
>
> in the same module or class.
>
> I suppose a slightly better term would be "function overloading", since
> that's what it was called some time back.
>
> C does not have this capability, and it occasionally leads to problems
> if a program doesn't use proper design methods (such as declaring all
> methods in .h files and including them, as opposed to putting local
> extern signatures in the .C code -- yes, my prior employer had code
> that did exactly that for awhile; hopefully it's cleaned up by now since
> it's been almost 6 years :-) ).
>
> >
> >> Globals. Java has no globals as such, unless one counts class names.
> >> C is all globals, unless one counts statics.
> >
> > Even the fully qualified classes are only "global" in the context of a
> > classloader and whatever classloaders it delegates to.
>
> Good point.
>
> >
> >> Unnamed classes. new Runnable() { public void run() {...} } is
> >> Java's contribution. Can be useful.
> >
> > Well, they do end up with a name after compilation.
>
> Picky, picky.  :-) In any event the name is not available
> to the program source; one can't expect to do things like
>
> Runnable$1 r = new Runnable() { public void run() {...} }
>
> and hope for it to work.  One might be able to do something
> slightly silly like
>
> Class c = Class.forName("Runnable$1");
>
> c.newInstance();
>
> but for Java that's slightly problematic, especially if there's
> more than one Runnable in that class.
>
> > And you do not
> > want to open that can of worms since then you end up with Ruby and
> > Smalltalk users dragging out closures and C# and Lisp users dragging
> > out lambdas... :)
>
> Yes, well AFAICT a closure is some code with a little context; in Java
> some of the context is required to have final variables, or a method by
> which it can pick up its owning class's members or call its routines.
>
> >
> >> Nested classes.
> >
> > Generally that's just a namespace issue. In Java, a class Fie nested
> > inside Foo is the top-level class Foo$Fie with some compiler magic to
> > ensure it's used correctly, which leads to funny stuff like
> >
> > Foo.Fie object = new Foo().new Fie();
> >
> > which gets turned into the bytecode equivalent of
> >
> > Foo$Fie object = new Foo$Fie(new Foo());
>
> Hm.
>
> >
> >> Primitive types -- in other words, the int<->Integer dichotomy we
> >> all know and love in Java; such also exists in C++ and IINM C#. I'm
> >> not sure if Smalltalk has such a concept, or not; Smalltalk allows
> >> overrides on numbers. (In Java one might contemplate 2.toString(),
> >> for example!)
> >
> > In Smalltalk you ask the 1 object to count to 10 for a loop. It makes
> > sense there, it would not feel "right" in the C family...
>
> Or anywhere else that I know of offhand.
>
> >
> >> Arbitrary integer size. The only language I know having this is
> >> Common LISP.
> >
> > java.math.BigInteger, but the operations you can perform are limited.
>
> Hm.  OK, "arbitrary number size with transparency".

Quite a few language implementations provide arbitrary precision
integers, I'll just mention Smalltalk again.

>
> >
> >> Thread-level variable/value scoping. In Java this is done using the
> >> ThreadLocal class, but is not (AFAICT) supported by the language
> >> proper.
> >
> > Yes, and that leads to a problem where if you forget to null a
> > ThreadLocal you can "leak" objects.
>
> Ugh.
>
> Well, unfortunately for Java it's all too easy to
> leak certain objects, though the only one coming to
> mind are FileInputStream, FileOutputStream, FileReader,
> and FileWriter.  Forget to close them before the variable
> goes out of scope and they remain open forever, as far as
> I can tell.
>
> (Maybe that'll be fixed in a subsequent rev.  I don't know.)
>
> >
> >> One might even contemplate function-level scoping, but that would
> >> only be useful if one can create new functions on the fly and modify
> >> these values; otherwise, they might as well be static.
> >
> > As long as you make sure you never use a private static member
> > elsewhere than in that particular method, it can play the role of a
> > function-level method.
> >
> >> Persistability. In Java one can implement Serializable or
> >> Externalizable, and generate output from an object. I've always
> >> considered this a bit of a weird hack but it can come in handy, and
> >> forms one leg of the Java EJB implementation.
> >
> > Persistability is left as an excercise to libraries in most languages.
>
> True, and in that library one usually has a base class.
>
> >
> >> Volatile field. In Java there is a volatile keyword. I don't know
> >> its precise semantics but it applies to fields.
> >
> > In Java it's generally a hint to the optimizer NOT to optimize away or
> > make any assumptions about access to a field.
> >
> >> C#'s event handling emulates this concept to some extent using the
> >> += operator, though I doubt they do it all that generally -- or all
> >> that well.
> >
> > Well it's closer to a list of function pointers, sorry delegates; not
> > much more than Java's more explicit (or cumbersome if you like) event
> > interfaces can do.
>
> Operator overloading has two issues: it's far more convenient to
> write something like
>
> Matrix m1, m2;
>
> Matrix m3 = m1 * m2;
>
> instead of
>
> Matrix m3 = m1.multiplyBy(m2);
>
> or
>
> Matrix m3 = Matrix.multiply(m1, m2);
>
> but it's harder for the compiler and the user to parse.
> So it's a tradeoff.
>
> The main problem I have with Swing event handling is
> that occasionally it's not clear when I have to tell the
> listeners that I've done something to a class which manages
> a bunch of listeners.  Also, ideally, one would not need
> to fire off the listeners in sequence -- though without
> explicitly spawning subthreads that would be difficult
> in Java.
>
> The main problem with C# event handling is that I don't
> know its ramifications, but I consider delegates a bit silly,
> mostly because of the Java++ fiasco.  That was not COOL,
> Microsoft. :-)
>
> >
> >> Integrated database access (and how tightly). C++ has none at all,
> >> though of one can use various third-party libraries. Java has some
> >> base-level API -- the java.sql.* and javax.sql* library.
> >
> > Well, those are general library APIs that require native or
> > socket-based implementation by vendors or third parties.
> >
> > What you talk about is better represented by "inline" SQL in the form
> > of SQLJ or Oracle's Pro*C and related products.
>
> There's the issue of how to handle schema changes, as well; that's
> probably why nobody wants to tightly integrate anymore.  I can't really
> blame 'em.
>
> >
> > It boils down to how much should be in the language (syntax, compiler,
> > runtime) and how much should be left to libraries. E.g. he has a "no"
> > for garbage collection in C++, but there are libraries for that sort
> > of thing (relying mostly on the ability to override the new, delete
> > and assignment operators. Even in Java you often have a choice of
> > garbage collector algorithms in a runtime.
>
> Hm; I'll have to research that.  Apart from the aforementioned stream
> issues and the occasional "oops I left the thing in the global
> Collection" issue, though, I've not had to do much with garbage
> collection, though I did write a rather poorly-performing cache.
>
> I will definitely have to fiddle with WeakReference at some point,
> though it's probably easier just to punt to a solution like
> Hibernate or JBossCache (TreeCache) or even Castor/JDO.
>
> Like I said, FOSS has a lot of stuff out there; the main problem
> for me is finding it. :-)
>
> --
> #191, ewill3 at earthlink.net
> Windows Vista.  Because it's time to refresh your hardware.  Trust us.



From sjdevnull at yahoo.com  Wed Sep  6 17:00:08 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 6 Sep 2006 14:00:08 -0700
Subject: threading support in python
In-Reply-To: <7xwt8goi1e.fsf@ruckus.brouhaha.com>
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
	<7xr6ypjr0r.fsf@ruckus.brouhaha.com>
	<1157566938.399058.242620@e3g2000cwe.googlegroups.com>
	<7xwt8goi1e.fsf@ruckus.brouhaha.com>
Message-ID: <1157576408.630652.129150@m79g2000cwm.googlegroups.com>

Paul Rubin wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > > We had that debate already (PEP 343).  Yes, there is some sloppy
> > > current practice by CPython users that relies on the GC to close the
> > > db conn.
> >
> > This point is unrelated to with or ref-counting.  Even the standard
> > library will close file objects when they are GC'd.
>
> I don't think so.  AFAIK, there is no such thing as "when they are
> GC'd" in the language spec.

If they don't get GC'd, then "when they are GC'd" is never.  The point
is that the standard library _does_ close files and take other
program-visible actions in __del__ methods; I'm unclear on if you think
that doing so is actually sloppy practice (as opposed to users of the
standard library relying on the GC running in some deterministic manner
or even at all, which you clearly do think is sloppy practice).

I originally thought that was what you meant when you said that "GC is
supposed to make it look like every object stays around forever, and
any finalizer that causes an explicit internal state change in an
extant object (like closing a file or socket) is not in the GC spirit
to begin with." but going back and reading it I'm not sure.



From fredrik at pythonware.com  Mon Sep 25 09:37:34 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 15:37:34 +0200
Subject: installation of python-dev
References: <4e4935ac0609241334p617d8fabq9f6ce1e30883ee38@mail.gmail.com>
Message-ID: <ef8m2u$qa6$1@sea.gmane.org>

Dominik M?ller wrote:

> I am running Python2.4.3; I need to install Python-dev (or does anybody know
> an easier way to get distutils.core ? that's what I actually need...).

umm.  distutils is part of the standard library, so it should be part of the core install.
what platform are you using, and where did you get the 2.4.3 kit ?

</F> 





From istvan.albert at gmail.com  Thu Sep 28 10:42:39 2006
From: istvan.albert at gmail.com (Istvan Albert)
Date: 28 Sep 2006 07:42:39 -0700
Subject: XSLT speed comparisons
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
Message-ID: <1159454559.693166.78530@h48g2000cwc.googlegroups.com>

Microsoft has put a lot of effort into their XML libraries as they are
(or will be) the foundation of most of their software suites. I think
you'll be hard pressed to find a library that exceeds it in both
breadth of functionality and performance. 

Istvan



From kyosuke at seznam.cz  Thu Sep 14 23:19:12 2006
From: kyosuke at seznam.cz (Jakub Hegenbart)
Date: Fri, 15 Sep 2006 05:19:12 +0200
Subject: matplotlib
In-Reply-To: <1158287584.727929.148040@i3g2000cwc.googlegroups.com>
References: <1158282047.089110.284140@h48g2000cwc.googlegroups.com>
	<20060915015210.7B5F.0.NOFFLE@fiedzia.homeip.net>
	<1158287584.727929.148040@i3g2000cwc.googlegroups.com>
Message-ID: <eed65b$j0f$1@ns.felk.cvut.cz>

diffuser78 at gmail.com wrote:
> This site and webpage in particular doesn't open. I tried that too
> before posting my question.
> 

There seems to be a nice cookbook:

http://www.scipy.org/Cookbook/Matplotlib

Jakub


From onurb at xiludom.gro  Fri Sep 15 06:18:20 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 15 Sep 2006 12:18:20 +0200
Subject: add without carry
In-Reply-To: <1158312804.852104.204850@i42g2000cwa.googlegroups.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
Message-ID: <450a7dec$0$14661$626a54ce@news.free.fr>

Hugh wrote:
> Sorry, here's an example...
> 
> 5+7=12
> 
> added without carrying, 5+7=2
> 
> i.e the result is always less than 10

> I've been thinking some more about this and my brain is starting to
> work something out... 

No need to think too long to come up with the most possibly Q&D solution:

res = int(str(5 + 7)[-1])

Like it ?-)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From george.sakkis at gmail.com  Mon Sep 18 19:33:20 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 18 Sep 2006 16:33:20 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
References: <450EB2B7.1070407@carldr.com>
	<mailman.242.1158616735.10491.python-list@python.org>
Message-ID: <1158622400.686144.246760@e3g2000cwe.googlegroups.com>

Calvin Spealman wrote:

> Just once, I would like to see a programming contest that was judged
> on the quality of your code, not the number of bytes you managed to
> incomprehensively hack it down to.

Unfortunately, quality is not as easy to judge as number of bytes. Such
contest would be as crazy an idea as a beauty contest! Oh, wait...



From quentel.pierre at wanadoo.fr  Wed Sep 13 06:24:08 2006
From: quentel.pierre at wanadoo.fr (Pierre Quentel)
Date: 13 Sep 2006 03:24:08 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
	<1158003527.979849.240080@m73g2000cwd.googlegroups.com>
	<1158089355.730894.51330@m73g2000cwd.googlegroups.com>
Message-ID: <1158143048.133054.155630@h48g2000cwc.googlegroups.com>

Buzhug (like Karrigell and Strakell) is a Breton word ; Breton is the
language spoken in Brittany, the westernmost part of France. Less and
less spoken, actually, but I do, like all my ancestors. It is a close
cousin of Welsh, and has common roots with Irish and Gaelic

Buzhug means "earthworm", the big long brown worms that you find when
you dig ; the shape is the same as a python, only smaller and less
dangerous...

You pronounce it "buzuk", with the French "u" or German "?"

Karrigell means "cart" and strakell, any sort of engine that you don't
know its name. Bot rhyme with "hell" ; a and r like in French, g like
in goat

Now you know 3 words of Breton !

Regards,
Pierre



From gatti at dsdata.it  Tue Sep 12 04:36:40 2006
From: gatti at dsdata.it (gatti at dsdata.it)
Date: 12 Sep 2006 01:36:40 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158033946.844515.13360@m73g2000cwd.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158033946.844515.13360@m73g2000cwd.googlegroups.com>
Message-ID: <1158050200.072785.11320@m73g2000cwd.googlegroups.com>


kondal wrote:

> This is the way the regexp works python doesn't has anything to do with
> it. It starts parsing the data with the pattern given. It returns the
> matched string acording the pattern and doesn't go back to find the
> other combinations.

I've recently had the same problem in Java, using automatically
generated regular expressions to find the longest match; I failed on
cases like matching the whole of "Abcdefg", but also the whole of
"AbCdefg" or "ABcdefg", with ([A-Z][a-z])?([A-Z][A-Za-z]{1,10})? .
No systematic way to deal with these corner cases was available, and
unsystematic ways (with greedy and reluctant quantifiers) were too
complex.
I ended up eliminating regular expressions completely and building a
dynamic programming parser that returns the set of all match lengths;
it wasn't hard and it should be even easier in Python.

Lorenzo Gatti



From johnjsal at NOSPAMgmail.com  Thu Sep 28 14:04:58 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 18:04:58 GMT
Subject: preemptive OOP?
Message-ID: <e9USg.47$1n3.432@news.tufts.edu>

Ok, I have a new random question for today -- feel free to ignore and 
get back to your real jobs! :)

Anyway, I'm creating a GUI (yes, all part of my master plan to 
eventually have some sort of database application working) and it's 
going to involve a wx.Notebook control. I think I have two options for 
how I can do this. Within the class for the main window frame, I can say:

notebook = wx.Notebook(panel) # panel is parent of the Notebook control

This uses the default wx.Notebook class, and works just fine. But I was 
thinking, is it a smart idea to do this instead:

class MyNotebook(wx.Notebook):
     def __init__(self, parent):
         wx.Notebook.__init__(self, parent)

and then call it from the main frame as:

notebook = MyNotebook(panel)

This seems to allow for future expansion of the customized Notebook 
class, but at the same time I have no idea how or why I'd want to do that.

So my question in general is, is it a good idea to default to an OOP 
design like my second example when you aren't even sure you will need 
it? I know it won't hurt, and is probably smart to do sometimes, but 
maybe it also just adds unnecessary code to the program.


From python-url at phaseit.net  Tue Sep 26 20:16:48 2006
From: python-url at phaseit.net (Cameron Laird)
Date: Wed, 27 Sep 2006 00:16:48 +0000 (UTC)
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (Sep 27)
Message-ID: <efcftg$79f$1@lairds.us>

QOTW:  "It's not out of the kindness of our hearts that we help.  Heck, I
don't know what it is.  Probably I just like reading my own drivel on the
internet and occasionally helping others is a good excuse." - Neil Cerutti

"Well, if you're only watching mtv, it's easy to think that there's 
obviously not much demand fr country singers, blues musicians, British
hard rock bands, or melodic death metal acts." - Fredrik Lundh


    std{in,out,err} are easier than people realize:
	 http://groups.google.com/group/comp.lang.python/browse_thread/thread/1295fe233337228f/

    Skip, Amaury, and Bruno illustrate that, yes, there *is* a
    purpose to for's else:
	http://groups.google.com/group/comp.lang.python/browse_thread/thread/bc1d8038e65c449/

    Thanks to Connelly Barnes for the autoimp module:
	http://groups.google.com/group/comp.lang.python/browse_thread/thread/2478cc7e5bcc6c30/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/python/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.


From roy at panix.com  Mon Sep  4 13:27:53 2006
From: roy at panix.com (Roy Smith)
Date: Mon, 04 Sep 2006 13:27:53 -0400
Subject: Where to find fpconst?
Message-ID: <roy-19E7C6.13275304092006@reader2.panix.com>

I'm trying to install SOAPpy per the instructions on Dive Into Python 
(http://diveintopython.org/soap_web_services/install.html).  I've got PyXML 
installed, but I'm stuck trying to find fpconst.

The URL given on the DIP page doesn't work; www.analytics.washington.edu 
doesn't resolve in DNS.  Likewise for 
http://software.biostat.washington.edu/statsoft/snake/fpconst

I found another URL, http://research.warnes.net/projects/rzope/fpconst, but 
that doesn't work either (I get a proxy error).

Anybody know where I can find fpconst?


From robert.kern at gmail.com  Fri Sep 22 00:13:36 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 21 Sep 2006 23:13:36 -0500
Subject: Building things with setup.py
In-Reply-To: <_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>
	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>
Message-ID: <eevntd$9oa$1@sea.gmane.org>

James Stroud wrote:
> I did build my own python 2.5, yesterday, requiring me to rebuild all 
> extensions.

Do other extensions build correctly? If so, it's beginning to look like a 
problem in numpy.distutils .

> Everything I do is compiled by hand as joe-user. I'm in a 
> situation where I can't do RPM (and I don't have root on my work machine 
> (theoretically ;-)) so, to be a good joe-user, everything I add goes 
> into the prefix:
> 
> $HOME/Programs
> 
> This is the listing from $HOME/Programs/lib/python2.5/config:
> 
> euler 6% ls
> total 4092
>     8 config.c       12 install-sh*       44 Makefile       8 python.o 
>     8 Setup.config
>     8 config.c.in  3960 libpython2.5.a    12 makesetup*    24 Setup 
>     8 Setup.local
> 
> The build process, by the way, required my copying libpython2.5.a to 
> $HOME/Programs/lib.

Hmm. That doesn't quite sound right, but it's been a while since I compiled the 
interpreter from source.

> The text files Setup.config and Setup.local do not seem to have terribly 
> specific information in them. Which file in particular should I inspect?

Makefile has most of that information. You can verify that distutils is finding 
it like so:

 >>> from distutils import sysconfig
 >>> sysconfig.get_makefile_filename()
'/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/config/Makefile'
 >>> d = sysconfig.parse_makefile(_)
 >>> import pprint
 >>> pprint.pprint(d)
{'AR': 'ar',
  ...
}

> I did not capture output from the build and I could not find a file with 
> the word "log" in it that appears to be a build log. The jist of the 
> problem is that first it can't find symbols from libpython2.5, then from 
>   libthread, etc. Then, it complains about no "MAIN__" when linking the 
> .so files with g77 and no "main" with gcc (which is curious), so I must 
> include the -shared flag, after including -llibrary type flags for all 
> of the libraries it doesn't know about.

What versions of gcc and g77 are you using?

> If its necessary, I can run setup.py build again and send the output to 
> a file and post that to scipy-dev if you think it might be helpful.

Yes, that is what I intended.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From fredrik at pythonware.com  Mon Sep 25 14:03:55 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 20:03:55 +0200
Subject: Reverse a String?
In-Reply-To: <1159206272.369879.240940@k70g2000cwa.googlegroups.com>
References: <mailman.505.1159045338.10491.python-list@python.org>	<1159135991.941286.203480@i42g2000cwa.googlegroups.com>	<mailman.558.1159187470.10491.python-list@python.org>
	<1159206272.369879.240940@k70g2000cwa.googlegroups.com>
Message-ID: <ef95mb$odg$2@sea.gmane.org>

p.lavarre at ieee.org wrote:

> Thanks for sharing the secret.  Now there I have added: "Q: How can I
> reverse a string, an array, a list, etc."

thanks!  I'll take another look at the texts and the site settings when 
I find the time (still waiting for the infogami folks to get back to me 
about the spam filter...)

</F>



From arne at vajhoej.dk  Sat Sep 30 16:04:39 2006
From: arne at vajhoej.dk (=?UTF-8?B?QXJuZSBWYWpow7hq?=)
Date: Sat, 30 Sep 2006 16:04:39 -0400
Subject: Computer Language Popularity Trend
In-Reply-To: <1159336615.533487.11890@k70g2000cwa.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159336615.533487.11890@k70g2000cwa.googlegroups.com>
Message-ID: <o5ATg.1095$2g4.1043@dukeread09>

Danno wrote:
> Xah Lee wrote:
>> This page gives a visual report of computer languages's popularity, as
>> indicated by their traffic level in newsgroups. This is not a
>> comprehensive or fair survey, but does give some indications of
>> popularity trends.
>>
>> http://xahlee.org/lang_traf/index.html
> 
> Wow, java is a low level industrial language? ;)

Compared to Python, Ruby etc. - yes.

Arne


From MonkeeSage at gmail.com  Wed Sep 20 02:11:35 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 19 Sep 2006 23:11:35 -0700
Subject: newbe's re question
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
	<1158718575.499145.58090@h48g2000cwc.googlegroups.com>
	<1158724148.116887.178920@d34g2000cwd.googlegroups.com>
Message-ID: <1158732695.125307.16890@h48g2000cwc.googlegroups.com>

Hi Eric,

Don't let people offput you from learning python. It's a great
language, and is fun to use. But really, George does have a point -- if
you want to learn python, then the best way is to swim with the tide
rather than against it. But still, don't worry too much about being
pythonic and whatnot (many people would disagree with me here), just
write the code that _you_ (and your team) feel the most comfortable
with, and helps you be the most productive. But again, many of the
conventional pythonic ways to do things are such because people have
tested various ways and found those to be the best. So don't just blow
off convention, either. Find a happy medium between your coding style
and the conventions, and then you'll really become as productive as you
can be. That's my opinion. And only my opinion. But if it helps you
too, that's good. :)

Ps. Do have a look at the tutorials and other guides available, they
should help you out alot (e.g., the regexp tutorial [1]).

[1] http://www.amk.ca/python/howto/regex/

Regards,
Jordan



From Bulkan at gmail.com  Tue Sep  5 08:36:16 2006
From: Bulkan at gmail.com (placid)
Date: 5 Sep 2006 05:36:16 -0700
Subject: HTTP Server Root Folder
Message-ID: <1157459776.181654.63480@b28g2000cwb.googlegroups.com>

Hi All,

I have this BaseHTTPServer.HTTPServer that is located at C:\ (im on
Windows XP), when i run the program (httpserver.pyw) from the Run
Dialog as "C:\httpserver.pyw" the root folder ("\") for http server is
C:\, but when i add an entry to Registry Run so that it runs at boot
time, the root folder becomes "C:\Documents and Settings\<username>" ?

Does anyone know what the problem is?

Cheers



From sjmachin at lexicon.net  Sat Sep 30 17:08:00 2006
From: sjmachin at lexicon.net (John Machin)
Date: 30 Sep 2006 14:08:00 -0700
Subject: loop over list and modify in place
In-Reply-To: <1vzTg.7077$GR.670@newssvr29.news.prodigy.net>
References: <mailman.1006.1159638327.10491.python-list@python.org>
	<1vzTg.7077$GR.670@newssvr29.news.prodigy.net>
Message-ID: <1159650480.454796.259190@i3g2000cwc.googlegroups.com>


James Stroud wrote:
> Daniel Nogradi wrote:
> > Is looping over a list of objects and modifying (adding an attribute
> > to) each item only possible like this?
> >
> > mylist = [ obj1, obj2, obj3 ]
> >
> > for i in xrange( len( mylist ) ):
> >    mylist[i].newattribute = 'new value'
> >
> >
> > I'm guessing there is a way to do this without introducing the (in
> > principle unnecessary) index i, so what I'm really looking for is a
> > looping method which doesn't pass references to the values of the
> > items but to the items themselves.
>
> You can use map, or if you don't map, like list comprehension:
>

Call me crazy, but isn't the simple construct
    for obj in mylist:
        obj.newattribute = 'new value'
what the OP was looking for?



From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep  5 18:45:34 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Wed, 6 Sep 2006 00:45:34 +0200
Subject: [ANN] IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <slrnefrvge.9pc.sybrenUSE@schuimige.stuvel.eu>

Jim Hugunin enlightened us with:
> I'm extremely happy to announce that we have released IronPython 1.0
> today!  http://www.codeplex.com/IronPython

Congratulations!

> We were also able to release IronPython publicly from Microsoft with
> a BSD-style license. [...] Without the drive and input of our users,
> IronPython would be a much weaker project.

I hope they take your example to heart and start releasing more Open
Source code.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From di9999 at cox.net  Wed Sep 20 21:10:33 2006
From: di9999 at cox.net (di)
Date: Wed, 20 Sep 2006 20:10:33 -0500
Subject: Need some help here
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <UDlQg.203$Go3.192@dukeread05>


"Kareem840" <KareemOfweet840 at hotmail.com> wrote in message 
news:1158790201.887958.84700 at k70g2000cwa.googlegroups.com...
> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.
>

There's this clown in Africa that will help you, please contact him. 




From paddy3118 at netscape.net  Fri Sep  8 00:17:33 2006
From: paddy3118 at netscape.net (Paddy)
Date: 7 Sep 2006 21:17:33 -0700
Subject: Negation in regular expressions
In-Reply-To: <1157688095.796720.270380@m73g2000cwd.googlegroups.com>
References: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
	<1157688095.796720.270380@m73g2000cwd.googlegroups.com>
Message-ID: <1157689053.332957.241810@d34g2000cwd.googlegroups.com>


Paddy wrote:
> George Sakkis wrote:
> > It's always striked me as odd that you can express negation of a single
> > character in regexps, but not any more complex expression. Is there a
> > general way around this shortcoming ? Here's an example to illustrate a
> > use case:
> >
> > >>> import re
> > # split with '@' as delimiter
> > >>> [g.group() for g in re.finditer('[^@]+', 'This @ is a @ test ')]
> > ['This ', ' is a ', ' test ']
> >
> > Is it possible to use finditer to split the string if the delimiter was
> > more than one char long (say 'XYZ') ? [yes, I'm aware of re.split, but
> > that's not the point; this is just an example. Besides re.split returns
> > a list, not an iterator]
> >
> > George
>
> If your wiling to use groups then the following will split
>
> >>> [g.group(1) for g in re.finditer(r'(.+?)(?:@#|$)', 'This @# is a @# test ')]
> ['This ', ' is a ', ' test ']
>
> - Paddy.

Here is another wrapping of the same finditer call that just allows you
to call .group() on the result

>>> class G(object):
... 	def __init__(self, x):
... 		def grp(x=x):
... 			return x
... 		self.group = grp
...
>>> [g.group() for g in (G(g.group(1)) for g in re.finditer(r'(.+?)(?:@#|$)', 'This @# is a @# test '))]
['This ', ' is a ', ' test ']
>>> 

- Paddy.



From theller at python.net  Fri Sep 22 12:38:32 2006
From: theller at python.net (Thomas Heller)
Date: Fri, 22 Sep 2006 18:38:32 +0200
Subject: Question about the article "py2exe compiler" in Python Cookbook
	by   Alexander Semenov
In-Reply-To: <1158940964.919242.148320@b28g2000cwb.googlegroups.com>
References: <1158940964.919242.148320@b28g2000cwb.googlegroups.com>
Message-ID: <ef13i8$m0b$1@sea.gmane.org>

Daniel Mark schrieb:
> Hello all:
> 
> I follow the following tutorial
> 
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/108598
> Description:
> script for making executables with py2exe
> ##############
> from distutils.core import setup
> import sys, os, py2exe
> 
> name = sys.argv[1]
> sys.argv[1] = 'py2exe'
> sys.path.append(os.path.dirname(os.path.abspath(name)))
> 
> setup(name=name[:-3], scripts=[name])
> ##############
> 
> However, I can not get the expected results.

Someone should correct this recipe.  In newer py2exe-versions,
you have to use 'console=[name]' in the above script.

Thomas



From george.sakkis at gmail.com  Tue Sep 26 21:43:33 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 18:43:33 -0700
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.643.1159255733.10491.python-list@python.org>
	<1159263438.026179.145120@b28g2000cwb.googlegroups.com>
	<mailman.657.1159264862.10491.python-list@python.org>
	<1159314523.951825.174470@m7g2000cwm.googlegroups.com>
Message-ID: <1159321413.386979.142130@m7g2000cwm.googlegroups.com>

altemurbugra at gmail.com wrote:

> I dont mean google
> i dont mean onelook.com
>
> these are only examples
>
> i hop eyou understand what i mean

Apparently, *you* don't understand what they're trying to tell you. It
roughly boils down to the following:

- All (except perhaps the most trivial small) sites disallow in their
Terms of Service the unregulated harvesting of their content by
webbots, both for legal and technical reasons. It's not just Google or
Onelook that does this.
- Yes, it is technically possible to attempt to violate their ToS,
running their risk to be caught (with whatever consequences this
implies).
- Yes, you *might* be able to get away with it (at least for some time)
running in stealth mode.
- No, people here are not willing to help you go down this road, you're
on your own. 

Hope this helps,
George



From amanda.lefevre at yahoo.ca  Sat Sep 30 12:14:09 2006
From: amanda.lefevre at yahoo.ca (Amanda)
Date: 30 Sep 2006 09:14:09 -0700
Subject: windev vs python SOS
In-Reply-To: <0001HW.C14424C100B023CEF0488530@news.individual.de>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<0001HW.C14424C100B023CEF0488530@news.individual.de>
Message-ID: <1159632848.993229.58300@m7g2000cwm.googlegroups.com>

> Can Windev interface with .net? >>>> YES
> Can Windev interface with Java? >>>> YES
> Can Windev interface natively with nearly every relational database on the
> planet? >>>>>>>> YES
> Does Windev interface with JMS, Java RMI, SAP RFC, mqseries and other
> middleware?>>>>>> YES
> Can you easily access any C/C++ library from Windev? >>>> YES
> Is Windev code as readable as Python for non-computer scientists?>>> I don't know Python but Wlangage is as readable as free text

I am always amazed when I meet fanatics!!
Links abour Windev for those who like facts :

http://www.windev.com/pcsoft/testimonials/index.html
http://www.pcsoft.fr/annonce10/photos.html
http://www.pcsoft.fr/pcsoft/120pages/index.html
Be cool !!!
A.


Wolfgang Keller wrote:
> >   - python work on multiple platform (linux, mac, windows)
> > 	A good point but it didn't interest him. Because
> > 	we want to choose a language for prototyping.
> > 	So multi platform is not enough.
>
> With Python the prototype _is_ the application. You just need to add a little
> bit of polishing (exception handling etc.) where required, maybe implement a
> speed-critical module in Pyrex, that's it.
>
> And for running a production application, cross-platform-ness _is_ important.
> Or what would you do when your customer wants to run his application not just
> on Windows, but on an embedded OS like VxWorks, QNX, or a _real_ server OS
> such as any proprietary Unix (including MacOS X), Linux, *BSD, OS/400 (or
> whatever it is called now), MVS...
>
> Can Windev interface with .net? For Python, there's Python.net (not
> Ironpython, that's a different thing).
>
> Can Windev interface with Java? For Python, there's JPype (not Jython, that's
> a different thing as well).
>
> Does Windev interface with JMS, Java RMI, SAP RFC, mqseries and other
> middleware?
>
> Can you build COM clients and servers in Windev? Can you build Corba clients
> and servers in Windev?
>
> Can Windev interface natively with nearly every relational database on the
> planet?
>
> Can you easily access any C/C++ library from Windev?
>
> Is Windev code as readable as Python for non-computer scientists?
>
> ...
>
> >   - windev as a good IDE, python? boa-constructor is ok with wxpython
>
> Python for Windows comes with an IDE (PythonWin) iirc. Otherwise there are
> plenty of development tools for database applications in Python (not all
> mentioned below are free):
>
> Access/Filemaker-like:
> - Rekall (Qt)
> - Knoda (Qt)
> - Kexi (Qt)
> - Gemello (GTK)
> - Glom (GTK)
> ...
>
> GUI-Builders:
> - Qt Designer
> - Glade (GTK)
> - Gazpacho (GTK) & Kiwi (application framework)
> - wxGlade (wxwidgets)
> - DialogBlocks (wxWidgets)
> - VisualWx (wxWidgets)
> - wxDesigner (wxWidgets)
> ...
>
> IDEs:
> - WingIDE
> - Eric3
> - SPE
> - Komodo
> - PyDev (for Eclipse)
> - Trustudio (for Eclipse)
> - Pythoncard (incl. GUI-Builder)
> - Boa Constructor (incl. GUI-Builder)
> ...
>
> Others:
> - GNUe (wxWidgets) (complete framework for enterprise database applications,
> including application server etc.)
> - TinyERP (GTK) (complete ERP implemented in Python, but if you strip out all
> the ERP-specific modules, you get a powerful framework inlcuding a workflow
> engine)
> - Dabo (wxWidgets) (framework & GUI Builder)
> ...
>
> >   - python is open source (that's not an argument for my boss, sorry
> > it's 	a boss ...)
>
> The point is that with Python you _can_ have commercial support if you
> want/need to. With Windev, as with any other proprietary software, you
> _depend_ on the original developer to continue to exist, fix bugs, implement
> required functionality...
>
> How anyone can bet the existence of a company on proprietary software in a
> time where even multi-billion dollar companys get taken over just to
> "consolidate competition" is beyond my scope of comprehension.
>
> Sincerely,
>
> Wolfgang Keller
>
> -- 
> My email-address is correct.
> Do NOT remove ".nospam" to reply.



From fredrik at pythonware.com  Thu Sep 14 08:30:46 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 14:30:46 +0200
Subject: memory
References: <f4cc03640609140525o17988c5bwd26b4f9d77c6231d@mail.gmail.com>
Message-ID: <eebi1m$b9i$1@sea.gmane.org>

"km" <srikrishnamohan at gmail.com> wrote:

> Is there any module to limit the memory usage of the python program ?

http://docs.python.org/lib/module-resource.html

</F> 





From ak at silmarill.org  Sun Sep 24 12:39:55 2006
From: ak at silmarill.org (Rainy)
Date: 24 Sep 2006 09:39:55 -0700
Subject: Ideal python idle
In-Reply-To: <1159115564.370694.108190@i3g2000cwc.googlegroups.com>
References: <ZWsRg.5785$7I1.660@newssvr27.news.prodigy.net>
	<1159115564.370694.108190@i3g2000cwc.googlegroups.com>
Message-ID: <1159115995.659327.310410@b28g2000cwb.googlegroups.com>


Rainy wrote:

> [snip]

Oh, I see now that F9 designates output buffer. I usually use vim with
a log file and open the log file in a new Vim tab.

-Rainy



From fredrik at pythonware.com  Thu Sep 14 07:37:24 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 13:37:24 +0200
Subject: How can I get the function's caller?
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net><mailman.4.1158129274.10491.python-list@python.org>
	<92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>
Message-ID: <eebetl$vr4$1@sea.gmane.org>

"David" wrote:

> I am writing a big (for me) program and it would be helpful to have a dummy
> function like this:
>
> def function_A_subfunction_B(self, ....)
>     dummy()
>
> that display a standard message like this:
>
> "Dummy: 'function_A_subfunction_B' in module 'module' is not defined yet"

that's spelled

    def function_A_subfunction_B(self, ....)
        raise NotImplementedError

in Python.

</F> 





From daniel.huangfei at gmail.com  Sat Sep 23 09:43:54 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 23 Sep 2006 06:43:54 -0700
Subject: anybody using python 2.5 that raises error while importing?
In-Reply-To: <1158935377.820149.242390@i42g2000cwa.googlegroups.com>
References: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>
	<1158935377.820149.242390@i42g2000cwa.googlegroups.com>
Message-ID: <1159019033.982301.172480@m7g2000cwm.googlegroups.com>


John Machin wrote:
> daniel wrote:
> > there's a dll extension used to be imported with no error under version
> > 2.4.3, but the new python complains that the name of the module can't
> > be found. seems not mentioned in the official documentation, any work
> > around to fix the issue without switching back to the old version?
>
thank you for your reply..

> Did/does its name end in .dll or in .pyd?
It ends in .dll

> Have you procured a new one (necessary when there's a change of minor
> version number) and installed it in the right place?
My output of "python -V" shows 2.5c2

> Can you tell us the name of the module, and the path to the DLL/PYD
The dll is distributed with a third party library, it claimed to be
compatible with 2.4, It was installed at "d:\" on my box, and the path
had been added to my PYTHONPATH variable.

> that is/was imported by Python 2.4?
yep, it works very well with python 2.4, so, I'm just wondering if
there is a fix for using with 2.5

> Have you contacted the author(s) of the module?
uh.. not yet, because they clearly mentioned that in the doc.

> Have you installed Python 2.5 in its own directory e.g. c:\python25
> (the default)? Python 2.4, same question? Have you uninstalled 2.4?
I already uninstalled the version 2.4. and put python25 in drive "d:".
there's probably no problem with my environment variables, maybe I
should check for a updated version of python.

thanks again.

daniel 
> 
> Regards,
> John



From rupole at hotmail.com  Thu Sep 28 08:19:01 2006
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 28 Sep 2006 08:19:01 -0400
Subject: Starting Win32 Service
References: <mailman.866.1159425750.10491.python-list@python.org>
Message-ID: <1159446160_3045@sp6iad.superfeed.net>


Tim Golden wrote:
...
> Yes, sorry about that, it's a well-known (to me) gotcha.
> Basically there's no way I can extract the params from
> the COM interface in a way which implies order, so I
> can't take them in positionally. (Corrections to this
> statement will be gratefully received).
>
> TJG

InParameters.Properties_ can be accessed by name or index,
so you should be able to map both *args and **kwargs.
(although you'd have to check for overlap yourself)

      Roger




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From paul at boddie.org.uk  Sun Sep 10 16:28:53 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 10 Sep 2006 13:28:53 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
	<1157752108.456624.146270@i3g2000cwc.googlegroups.com>
	<gcsMg.9006$bM.550@newsread4.news.pas.earthlink.net>
	<z9ZMg.9635$bM.7954@newsread4.news.pas.earthlink.net>
Message-ID: <1157920133.034792.138940@h48g2000cwc.googlegroups.com>

Dennis Lee Bieber wrote:
>
>  Talking to myself again, I see...

Not quite. ;-)

[...]

>  How interesting... With MySQL/MySQLdb I did NOT get exceptions or
> error results on inserting bad numeric data supplied as character string
> format (ie, as read from the CSV). Instead, MySQL SILENTLY converted
> them to ZEROS
>
>  A price of "Priceless" becomes Decimal("0.00").
>
>  The Customer number of ">68" became 0L

This kind of thing is "classic" MySQL behaviour.

>  Which would one rather have to work with -- a database that copied
> invalid numerics as string literals (which, in my mind, makes it much
> easier to correct the data later, using "update .... set field = correct
> where field = invalid") or a database that silently converts them all to
> 0 values. (Of course, I now expect to have a rejoinder about "Using a
> REAL database instead of MySQL" -- but unless said person wishes to
> start making the same comments about SQLite on at least as regular a
> basis, I believe the objection itself is invalid for this example).

Given subsequent research into SQLite's affinity modes and their
presumed status as future features, the solution in that database
system's case is to apply validation in the driver/module or through
driver extensions, and there is apparently some flexibility in the
pysqlite2 modules for changing the way data types are handled, although
a cursory inspection of the documentation doesn't appear to suggest a
convenient, ready-made solution.

As for MySQL, the situation is possibly more awkward: one expects the
database system to complain about certain things, which it probably
does from time to time, but it would seem wasteful to duplicate
whatever validation the database system does do just to cover those
situations where the system misbehaves.

Paul



From petr.jakes at tpc.cz  Fri Sep 22 07:53:42 2006
From: petr.jakes at tpc.cz (=?windows-1250?Q?Petr_Jake=9A?=)
Date: Fri, 22 Sep 2006 13:53:42 +0200
Subject: unicode mystery/problem
In-Reply-To: <1158789886.997992.261940@i3g2000cwc.googlegroups.com>
References: <1158774055.273842.24200@m7g2000cwm.googlegroups.com>
	<1158789886.997992.261940@i3g2000cwc.googlegroups.com>
Message-ID: <789843733.20060922135342@tpc.cz>

John, thanks for your extensive answer.
>> Hi,
>> I am using Python 2.4.3 on Fedora Core4 and  "Eric3" Python IDE
>> .
>> Below mentioned code works fine in the Eric3 environment. While trying
>> to start it from the command line, it returns:
>>
>> Traceback (most recent call last):
>>   File "pokus_1.py", line 5, in ?
>>     print str(a)
>> UnicodeEncodeError: 'ascii' codec can't encode character u'\xc1' in
>> position 6: ordinal not in range(128)

JM> So print a works, but print str(a) crashes.

JM> Instead, insert this:
JM>    import sys
JM>    print "default", sys.getdefaultencoding()
JM>    print "stdout", sys.stdout.encoding
JM> and run your script at the command line. It should print:
JM>     default ascii
JM>     stdout x
****  in the command line it prints:  *****
default ascii
stdout UTF-8
JM> here, and crash at the later use of str(a).
JM> Step 2: run your script under Eric3. It will print:
JM>     default y
JM>     stdout z

****  in the Eric3 it prints:  ****
if the # -*- Eencoding: utf_8 -*- is set than:

default utf_8
stdout
unhandled AttributeError, "AsyncFile instance has no attribute
'encoding' "

if the encoding is not set than it prints:

DeprecationWarning: Non-ASCII character '\xc3' in file
/root/eric/analyza_dat_TPC/pokus_1.py on line 26, but no encoding
declared; see http://www.python.org/peps/pep-0263.html for details execfile(sys.argv[0], self.debugMod.__dict__)

default latin-1
stdout
unhandled AttributeError, "AsyncFile instance has no attribute
'encoding' "

JM> and then should work properly. It is probable that x == y == z ==
JM> 'utf-8'
JM> Step 3: see below.

>>
>> ========== 8< =============
>> #!/usr/bin python
>> # -*- Encoding: utf_8 -*-

JM> There is no UTF8-encoded text in this short test script. Is the above
JM> encoding comment merely a carry-over from your real script, or do you
JM> believe it is necessary or useful in this test script?
Generally, I am working with string like u'DISKOV\xc1 POLE' (I am
getting it from the database)

My intention to use >> # -*- Encoding: utf_8 -*- was to suppress
DeprecationWarnings if I use utf_8 in the code (like u'DISKOV\xc1 POLE')

>>
>> a= u'DISKOV\xc1 POLE'
>> print a
>> print str(a)
>> ========== 8< =============
>>
>> Even it looks strange, I have to use str(a) syntax even I know the "a"
>> variable is a string.

JM> Some concepts you need to understand:
JM> (a) "a" is not a string, it is a reference to a string.
JM> (b) It is a reference to a unicode object (an implementation of a
JM> conceptual Unicode string) ...
JM> (c) which must be distinguished from a str object, which represents a
JM> conceptual string of bytes.
JM> (d) str(a) is trying to produce a str object from a unicode object. Not
JM> being told what encoding to use, it uses the default encoding
JM> (typically ascii) and naturally this will crash if there are non-ascii
JM> characters in the unicode object.

>> I am trying to use ChartDirector for Python (charts for Python) and the
>> method "layer.addDataSet()" needs above mentioned syntax otherwise it
>> returns an Error.

JM> Care to tell us which error???
you can see the Error description and author comments here:
http://tinyurl.com/ezohe

>>
>> layer.addDataSet(data, colour, str(dataName))
I have try to experiment with the code a bit.
the simplest code where I can demonstrate my problems:
#!/usr/bin python
import sys
print "default", sys.getdefaultencoding()
print "stdout", sys.stdout.encoding
   
a=['P\xc5\x99\xc3\xad','Petr Jake\xc5\xa1']
b="my nice try %s" % ''.join(a).encode("utf-8")
print b

When I run it from the command line i am getting:
sys:1: DeprecationWarning: Non-ASCII character '\xc3' in file pokus_1.py on line 26, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

default ascii
stdout UTF-8

Traceback (most recent call last):
  File "pokus_1.py", line 8, in ?
    b="my nice try %s" % ''.join(a).encode("utf-8")
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc5 in position 1: ordinal not in range(128)



JM> The method presumably expects a str object (8-bit string). What does
JM> its documentation say? Again, what error message do you get if you feed
JM> it a unicode object with non-ascii characters?

JM> [Step 3] For foo in set(['x', 'y', 'z']):
JM>     Change str(dataName) to dataName.encode(foo). Change any debugging
JM> display to use repr(a) instead of str(a). Test it with both Eric3 and
JM> the command line.

JM> [Aside: it's entirely possible that your problem will go away if you
JM> remove the letter u from the line a= u'DISKOV\xc1 POLE' -- however if
JM> you want to understand what is happening generally, I suggest you don't
JM> do that]

JM> HTH,
JM> John




From simon at brunningonline.net  Tue Sep 26 06:37:37 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 26 Sep 2006 11:37:37 +0100
Subject: where are isinstance types documented?
In-Reply-To: <8c7f10c60609260310h64c4853ajfe7736748c9ed1ef@mail.gmail.com>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
	<8c7f10c60609260310h64c4853ajfe7736748c9ed1ef@mail.gmail.com>
Message-ID: <8c7f10c60609260337m70731c05p7020e055a812cb2e@mail.gmail.com>

On 9/26/06, Simon Brunning <simon at brunningonline.net> wrote:
> On 26 Sep 2006 02:59:07 -0700, codefire <tony.bedford at gmail.com> wrote:
> > For example isinstance(a, int) works fine but isinstance(s, string)
> > doesn't - because 'string is not known'.
>
> In this case, you want "str" rather than "string".

A couple of points to consider:

Firstly, do you really need to use isinstance() at all? It's often not
necessary. Consider a duck-typing approach instead - i.e. to just try
using the object as a string, and to deal with exceptions arising from
the possibility that it isn't. This approach would allow string-like
objects as well as "real" strings.

Secondly, if you *really* want to use isinstance(), "basestring" is
the super-type of both "str" and "unicode", so it's more likely to be
what you want.

-- 
Cheers,
Simon B,
simon at brunningonline.net


From iambus at gmail.com  Wed Sep  6 06:43:41 2006
From: iambus at gmail.com (iambus at gmail.com)
Date: 6 Sep 2006 03:43:41 -0700
Subject: How to insert an email-link into wxPython's HtmlWindow
Message-ID: <1157539420.812552.60770@m79g2000cwm.googlegroups.com>

Hello. I don't know if this topic is appropriate in this group (and my
English is not good).

My problem is here:

I created a HtmlWindow in wxPython, then I wrote some code and set it
to the page-text. In these code there was a line "<a
href="mailto:name at gmail.com">name at gmail.com</a>" (where "name" was my
real username). Then I showed this HtmlWindow and I thought there would
be a mail-sending box when I clicked on the "name at gmail.com" link (like
when I clicked it in a web browser). But there just came a "Python
Error"-titled dialog: Unable to open requested HTML document
mailto:name at gmail.com. What should I do to solve this problem?

(My OS is WinXP.)

Thanks.



From george.sakkis at gmail.com  Tue Sep 26 11:37:20 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 08:37:20 -0700
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
	<efa864$rbf$1@lust.ihug.co.nz>
Message-ID: <1159285039.913453.194150@h48g2000cwc.googlegroups.com>

Lawrence D'Oliveiro wrote:

> Fredrik Lundh wrote:
> > you're not the designer...
>
> I don't have to be. Whoever the designer was, they had not properly thought
> through the uses of this function. That's quite obvious already, to anybody
> who works with HTML a lot. So the function is broken and needs to be fixed.
>
> If you're worried about changing the semantics of a function that keeps the
> same "cgi.escape" name, then fine. We delete the existing function and add
> a new, properly-designed one. _That_ will be a wake-up call to all the
> users of the existing function to fix their code.

Wow. Are you always that arrogant for things you know very little
about, or just plain stupid ?



From sjmachin at lexicon.net  Mon Sep 11 18:48:26 2006
From: sjmachin at lexicon.net (John Machin)
Date: 11 Sep 2006 15:48:26 -0700
Subject: Simple regex with whitespaces
In-Reply-To: <OHkNg.273$6S3.53@newssvr25.news.prodigy.net>
References: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
	<TveNg.17034$o42.4177@tornado.texas.rr.com>
	<OHkNg.273$6S3.53@newssvr25.news.prodigy.net>
Message-ID: <1158014906.740435.101740@b28g2000cwb.googlegroups.com>


James Stroud wrote:
> Paul McGuire wrote:
> > <mathieu.malaterre at gmail.com> wrote in message
> > news:1157945804.805624.32620 at p79g2000cwp.googlegroups.com...
> >
> >>Hello,
> >>
> >> I cannot figure out a way to find a regular expression that would
> >>match one and only one of these two strings:
> [clip]
> >>Any suggestion ? Thanks a bunch !
> >>Mathieu
> >>
> >
> > A pyparsing approach is not as terse as regexp's, but it's not terribly long
> > either.
>
> To second Paul's suggestion, usually, if the regex is not immediately
> obvious, its probably better to look into parsing modules, pyparsing
> being one of the most accessible modules (to me, anyways)--and well
> worth learning.

I would say that it's better, before leaping to the implementation, to
understand the problem. IOW, rough out the grammar first --- in the
current case, not very complicated at all; the way I looked at it there
are only two possible outcomes from the tokeniser (space and not-space)
and only three non-terminal symbols (word, sentence, paragraph) -- then
choose the implementation.

>
> However, in complicated applications, regex is usually still fun and
> valuable as an intellectual exercise.

Indeed. Better use of the mind and the CPU than distractions du jour
like pseudorubiku or whatever it's called :-)

Cheers,
John



From siona at chiark.greenend.org.uk  Wed Sep 27 10:09:17 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 27 Sep 2006 15:09:17 +0100 (BST)
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efde8s$o1c$2@lust.ihug.co.nz>
Message-ID: <zNA*dgQrr@news.chiark.greenend.org.uk>

Lawrence D'Oliveiro  <ldo at geek-central.gen.new_zealand> wrote:
>In message <slrnehk7ju.rcu.apardon at rcpc42.vub.ac.be>, Antoon Pardon wrote:
>> I need this Top value in
>> a context where it can be used as a start or stop value
>> in a slice.
>But the only valid values allowed for indices are 0

>>> range(5)[:-1]
[0, 1, 2, 3]

>  up to the length of the
>array inclusive. Larger integers are not allowed, [ ... ]

>>> range(5)[:sys.maxint]
[0, 1, 2, 3, 4]

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From justin.frost at gmail.com  Fri Sep 29 18:53:26 2006
From: justin.frost at gmail.com (MakaMaka)
Date: 29 Sep 2006 15:53:26 -0700
Subject: Block Diagram / digraph Editor
Message-ID: <1159570406.255129.166680@h48g2000cwc.googlegroups.com>

Hi,
Does anybody know of a good widget for wxpython, gtk, etc. that allows
the editing of block diagrams and make it easy to export the diagram as
a digraph?  It has to be available under Windows.  I want the user to
draw a series of blocks on a canvas, connect them with directional
arrows, and then a function will extract the digraph this represents
and do some graph traversal algorithms on it.  Think DIA or VISIO w/
only a few blocks and connectors available.  Any ideas?  I'd rather not
build my own w/ OGL....


thanks,
-Justin



From jmike at alum.mit.edu  Thu Sep 28 11:33:32 2006
From: jmike at alum.mit.edu (jmike at alum.mit.edu)
Date: 28 Sep 2006 08:33:32 -0700
Subject: XML parser that sorts elements?
References: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>
	<_OTQg.4326$nX4.2493@tornado.texas.rr.com>
	<q9UQg.4441$nX4.2666@tornado.texas.rr.com>
Message-ID: <1159457612.048002.27650@k70g2000cwa.googlegroups.com>

Paul McGuire wrote:
> >>> doc.childNodes[0].childNodes = sorted(
> ...   [n for n in doc.childNodes[0].childNodes
> ...     if n.nodeType==doc.ELEMENT_NODE],
> ...   key=lambda n:n.nodeName)
> >>> print doc.toprettyxml()
> <?xml version="1.0" ?>
> <booga bar="2" foo="1">
>         <blah>
>                 goodbye
>         </blah>
>         <well>
>                 hello
>         </well>
> </booga>

My requirements changed a bit, so now I'm sorting second level elements
by their values of a specific attribute (where the specific attribute
can be chosen).  But the solution is still mainly what you posted here.
 It was just a matter of supplying a different function for 'key'.
It's up and running live now and all is well.  Thanks again!

(A bonus side effect of this is that it let me sneak "sorted()" into
our test infrastructure, which gave me reason to get our IT guys to
upgrade a mismash of surprisingly old Python versions up to Python 2.5
everywhere.)

--JMike



From larry.bates at websafe.com  Mon Sep 11 09:56:14 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 08:56:14 -0500
Subject: win32service (wxpython) -- i cannot install service
In-Reply-To: <1157948027.662154.233470@p79g2000cwp.googlegroups.com>
References: <1157948027.662154.233470@p79g2000cwp.googlegroups.com>
Message-ID: <45056AFE.8060501@websafe.com>

I believe you misunderstand services.  They don't
have user interfaces (UIs) like other programs.
They run without any UI as background processes that
are in basically in an infinite loop but with a way
to break out of the loop (stop service).  If you wish
to have a background service that has some sort of
control UI, you need to write it as two parts.  The
service and a UI that communicates with the service
either through a shared file, pipe, or socket server/
client interface.

You should pick up a copy of Python Programming on
Win32 which is an excellent reference book for writing
Windows services.

-Larry Bates


From exarkun at divmod.com  Tue Sep  5 17:00:54 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 5 Sep 2006 17:00:54 -0400
Subject: threading support in python
In-Reply-To: <7xslj66p8o.fsf@ruckus.brouhaha.com>
Message-ID: <20060905210054.1717.394584188.divmod.quotient.40203@ohm>

On 05 Sep 2006 13:19:03 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>skip at pobox.com writes:
>> It was removed at one point in the dim, dark past (circa Python 1.4) on an
>> experimental basis.  Aside from the huge amount of work, it resulted in
>> significantly lower performance for single-threaded apps (that is, the
>> common case).
>
>That's probably because they had to put locking and unlocking around
>every access to a reference count.  A real GC might have fixed that.

It would have made a difference, surely.  Whether that difference would have
been positive, negative, or unnoticable is a matter for benchmarking and
profiling.

Even if you eliminate reference counting, you still have memory allocation
to deal with.  Python allocates approximately a jillion objects every time
you sneeze, and each of these goes through CPython's allocator, which needs
a lock to protect it from being corrupted by concurrent invocations.

It's not a simple matter to make CPython free-threaded (even so simple as
replacing all reference counting with another form of garbage collection),
although perhaps if half as much time were spent cutting code as is spent
discussing the matter, we might learn if there were any value in doing so.

Jean-Paul


From fredrik at pythonware.com  Sun Sep 24 04:52:07 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 10:52:07 +0200
Subject: Reverse a String?
In-Reply-To: <1159047299.209370.261420@b28g2000cwb.googlegroups.com>
References: <mailman.505.1159045338.10491.python-list@python.org>	<4515a15f$0$19913$4d3efbfe@news.sover.net>
	<1159047299.209370.261420@b28g2000cwb.googlegroups.com>
Message-ID: <ef5gvm$c9n$2@sea.gmane.org>

p.lavarre at ieee.org wrote:

> That 'foo'[::-1] is the Python reverse string idiom I'll try here
> forward, thanks.
> 
> Also '.h.e.l.l.o'[1::2] to pick out every second char, etc., thanks.
> 
> Three footnotes:
> 
> 1) Reverse string isn't yet in http://www.python.org/doc/faq/

so what are you waiting for?

     http://pyfaq.infogami.com/

> 2) Google Groups searches here yesterday instead pushed me towards the
> less concise:
> 
> 	def reverse(chars):
> 		aa = array.array('c', chars)
> 		aa.reverse()
> 		return aa.tostring()

that's a reasonably efficient way to do this in older versions.

</F>



From jstroud at mbi.ucla.edu  Wed Sep 13 01:52:00 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 13 Sep 2006 05:52:00 GMT
Subject: table (ascii text) lin ayout recognition
In-Reply-To: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
References: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
Message-ID: <40NNg.481$Ij.371@newssvr14.news.prodigy.com>

vbfoobar at gmail.com wrote:
> Hello,
> 
> I am looking for python code useful to process
> tables that are in ASCII text. The code must
> determine where are the columns (fields).
> Concerned tables for my application are various,
> but their columns are not very complicated
> to locate for a human, because even
> when ignoring the semantic of  words,
> our eyes see vertical alignments
> 
> Here is a sample table (must be viewed
> with fixed-width font to see alignments):
> =================================
> 
> 44544      ipod          apple     black         102
> GFGFHHF-12 unknown thing bizar     brick mortar  tbc
> 45fjk      do not know   + is less               biac
>            disk          seagate   250GB         130
> 5G_gff                   tbd       tbd
> gjgh88hgg  media record  a and b                 12
> hjj        foo           bar       hop           zip
> hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
> qdsd       zert                    nope          nope
> 
> =================================
> 
> I want the python code that builds a representation
> of this table (for exemple a list of lists, where each list
> represents a table line, each element of the list
> being a field value).
> 
> Any hints?
> thanks
> 

I have to catch a bus, but, quickly the algorithm is to code non-space 
as one and space as zero, then 'or' operate down the columns. Zeros will 
indicate high probability of between-column. Code tomorrow if no one 
else posts.

Must run...


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From CedricCicada at gmail.com  Wed Sep  6 16:46:32 2006
From: CedricCicada at gmail.com (CedricCicada at gmail.com)
Date: 6 Sep 2006 13:46:32 -0700
Subject: Data sticking around too long
In-Reply-To: <1157574434.643964.218110@m73g2000cwd.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
	<1157574434.643964.218110@m73g2000cwd.googlegroups.com>
Message-ID: <1157575592.588966.17100@m73g2000cwd.googlegroups.com>

Skip and Matimus,

Thank you for your replies.  Putting initialization in the constructor
gets me what I want.  But I'd like to understand this a bit more.
Here's another script:

class ScannerCommand:
    taskName = ''
    scanList = []

    def __init__(self, data):
        self.scanList = []
        self.scanList.append(data)

if __name__ == '__main__':
    c1 = ScannerCommand("c1")
    c2 = ScannerCommand("c2")
    print "C1: "
    for data in c1.scanList:
        print "   " + data
    print "C2: "
    for data in c2.scanList:
        print "   " + data

And here's the output, which is what I want:
C1:
   c1
C2:
   c2

If scanList is a class variable shared between all instances of the
class, then C1's list should have held "C2" when I printed it, since C2
came along and changed scanList.  But obviously, here it's not a class
variable and the two instances have their own lists.

If I don't initialize scanList in the constructor, then scanList is a
class variable (in C++, it would be a static member of the class) that
is shared among all instances of the class.  If I do initialize
scanList in the constructor, then scanList magically becomes an
instance variable, with every instance of the ScannerCommand object
having its own scanList list???  Is that really the way it works?  I
would have thought the C++ way, with some special syntax to distinguish
a class variable from an instance variable, would be much easier to
work with.

Thanks again!

Rob Richardson
RAD-CON, Inc.
Bay Village, OH



From felipe.lessa at gmail.com  Sun Sep  3 14:06:09 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Sun, 3 Sep 2006 15:06:09 -0300
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <1hl2xuf.1we7p812kbt88N%aleax@mac.com>
References: <edcrms$auj$1@news.uit.no>
	<mailman.10304.1157280160.27775.python-list@python.org>
	<edefl6$10dc$1@news.uit.no> <edeiqj$11ef$1@news.uit.no>
	<mailman.10309.1157291622.27775.python-list@python.org>
	<1hl2xuf.1we7p812kbt88N%aleax@mac.com>
Message-ID: <c2701f5c0609031106i7d428da2maed40e1d73c7aa81@mail.gmail.com>

2006/9/3, Alex Martelli <aleax at mac.com>:
> Reflecting on the OP's use case, since all connections are forever being
> made to the same 16 servers, why not tweak thinks a bit to hold those
> connections open for longer periods of time, using a connection for many
> send/receive "transactions" instead of opening and closing such
> connections all of the time?  That might well work better...

Connecting to 16 differente servers per second gives a very poor
performance, right? There's some overhead in creating TCP connections,
even on fast networks and computers. Am I right?

-- 
Felipe.


From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep 28 11:36:02 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 28 Sep 2006 17:36:02 +0200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.847.1159402807.10491.python-list@python.org>
	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>
Message-ID: <slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>

Mike Playle enlightened us with:
> Imagine you're an IT manager for a medium-to-large company who wants
> to use some expensive piece of software. You talk to the vendor and
> buy a licence to use the software on up to 5 machines at once, but
> you don't know who in the company will want to use it, so for
> convenience you want to install it on every PC in the building.
>
> Having installed it all over the shop, how can you be sure that only
> 5 people are using it at any one time?

Write the software in such a way that it needs a certificate on a
smartcard, then supply the company with five smartcards.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From fredrik at pythonware.com  Thu Sep 14 03:17:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 09:17:32 +0200
Subject: How do I converted a null (0) terminated string to a Python 
	string?
In-Reply-To: <1158212423.601263.122640@p79g2000cwp.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
Message-ID: <eeavmc$dh8$2@sea.gmane.org>

Michael wrote:

> Thanks for your reply. Just wondering... how are Python strings
> formatted? Evidently they're not 0 terminated.

have you tried *printing* the thing you got via UDP?

to get a programmer-friendly representation of an arbitrary object, use

     print repr(obj)

(where obj is your string, in this case).

</F>



From ptmcg at austin.rr._bogus_.com  Mon Sep 11 10:36:35 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 11 Sep 2006 14:36:35 GMT
Subject: Simple regex with whitespaces
References: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
Message-ID: <TveNg.17034$o42.4177@tornado.texas.rr.com>

<mathieu.malaterre at gmail.com> wrote in message 
news:1157945804.805624.32620 at p79g2000cwp.googlegroups.com...
> Hello,
>
>  I cannot figure out a way to find a regular expression that would
> match one and only one of these two strings:
>
> s1 = '                              how are you'
> s2 = '    hello world               how are you'
>
>  All I could come up with was:
> patt = re.compile('^[ ]*([A-Za-z]+)[  ]+([A-Za-z]+)$')
>
>  Which of course does not work. I cannot express the fact: sentence
> have 0 or 1 whitespace, separation of group have two or more
> whitespaces.
>
> Any suggestion ? Thanks a bunch !
> Mathieu
>
A pyparsing approach is not as terse as regexp's, but it's not terribly long 
either.  Following John Machin's submission as a pattern:

s1 = '                              how are you'
s2 = '    hello world               how are you'

from pyparsing import *

wd = Word(printables)
# this is necessary to suppress pyparsing's built-in whitespace skipping
wd.leaveWhitespace()
sentence = delimitedList(wd, delim=White(' ',exact=1))

for test in (s1,s2):
    print sentence.searchString(test)


Pyparsing returns data as ParseResults objects, which can be accessed as 
lists or dicts.  From this first cut, we get:
[['how', 'are', 'you']]
[['hello', 'world'], ['how', 'are', 'you']]

These aren't really sentences any more, but we can have pyparsing put them 
back into sentences, by adding a parse action to sentence.

sentence.setParseAction(lambda toks: " ".join(toks))

Now our results are:
[['how are you']]
[['hello world'], ['how are you']]


If you really want to get fancy, and clean up some of that capitalization 
and lack of punctuation, you can add a more elaborate parse action instead:
ispunc = lambda s: s in ".!?;:,"
sixLoyalServingMen = ('What','Why','When','How','Where','Who')
def cleanup(t):
    t[0] = t[0].title()
    if not ispunc( t[-1][-1] ):
        if t[0] in sixLoyalServingMen:
            punc = "?"
        else:
            punc = "."
    else:
        punc = ""
    return " ".join(t) + punc
sentence.setParseAction(cleanup)

This time we get:
[['How are you?']]
[['Hello world.'], ['How are you?']]


The pyparsing home page is at pyparsing.wikispaces.com.

-- Paul




From sebastien.thur at laposte.net  Wed Sep  6 09:03:43 2006
From: sebastien.thur at laposte.net (seb)
Date: 6 Sep 2006 06:03:43 -0700
Subject: getting quick arp request
In-Reply-To: <1157545228.519716.259040@i42g2000cwa.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
Message-ID: <1157547823.168174.191600@i42g2000cwa.googlegroups.com>

Hi Ben,

I am indeed using XP SP2.
I have checked on the event viewer and I have not seen the event 4226.

Besides I also run on the same PC angry Ip scanner 2.21. Checking using
ethereal the arp request are all dispatched quit quickly (see my mail
above).

Thanks for the advice anyway.
Sebastien.




Ben Sizer wrote:
> seb wrote:
> > I need to write a scanner that test all the IP adresses that repond on
> > a given port.
> ...
> > I am using winXP pro on a 2GHZ P4 and 512 Mo.
>
> If you have XP Service Pack 2, it cripples port-scanning as part of a
> 'security' fix. Broadly speaking, it limits the rate at which you can
> make connections at the OS level; this will show up as event 4226 in
> the Event Viewer if it affects you.
> 
> -- 
> Ben Sizer



From jaysherby at gmail.com  Sat Sep  2 14:31:52 2006
From: jaysherby at gmail.com (Jay)
Date: 2 Sep 2006 11:31:52 -0700
Subject: pictures as characters in a Tk text box?
In-Reply-To: <1157162709.109743.63020@m79g2000cwm.googlegroups.com>
References: <1157149401.300181.300010@e3g2000cwe.googlegroups.com>
	<1157162709.109743.63020@m79g2000cwm.googlegroups.com>
Message-ID: <1157221912.094315.56100@e3g2000cwe.googlegroups.com>

Can you do the same in wxPython?

Simon Forman wrote:
> Jay wrote:
> > This may be really obscure, but I had a dream about programming
> > something like this, so don't blame me.  Is it possible to take a small
> > image or icon and display it as a character in a Tk text box?  Think
> > how Thunderbird displays text smilies as actual smiley icons.  Or how
> > in AIM as you type a smiley, it replaces it with the picture.  Does
> > anyone know how to display these specifically in a Tk text box?  Thanks.
>
> Dreaming in Python, eh?  Maybe you should take a break.  ;-)
>
> Sure, quoting the link below: "You can put an image or bitmap into a
> text widget. It is treated as a single character whose size is the
> natural size of the object."
>
> You can also embed any Tk widget in a Tk Text widget, including
> ImageTks and widgets with bitmaps.
>
> See:
> http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-image.html
> and
> http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-window.html
> 
> 
> HTH,
> ~Simon



From steve at holdenweb.com  Mon Sep 11 17:44:14 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 22:44:14 +0100
Subject: Running python from a usb drive
In-Reply-To: <ee4hjf$2ett$1@ulysses.news.tiscali.de>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>	<ee4fm8$2elh$1@ulysses.news.tiscali.de>	<mailman.290.1158007035.5279.python-list@python.org>
	<ee4hjf$2ett$1@ulysses.news.tiscali.de>
Message-ID: <ee4la5$u95$1@sea.gmane.org>

Uwe Hoffmann wrote:
> Steve Holden schrieb:
> 
>>Uwe Hoffmann wrote:
>>
>>
>>>cjl schrieb:
>>>
>>>
>>>
>>>>I do set pythonpath, see above.
>>>>
>>>
>>>is pythonpath really case insensitive on windows ?
>>
>>
>>Only because the Windows filesystem implements case-insensitive 
>>semantics. This is nothing to do with Python:
> 
> 
> no, i mean't the name not the content. Is the handling of the
> env variable pythonpath case insensitive: pythonpath <--> PYTHONPATH.
> 
You live and learn. Apparently it is:

C:\Steve\Projects\Python\dbimp>set SCREWUP="This is Windows"

C:\Steve\Projects\Python\dbimp>python
Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on 
win32
Type "help", "copyright", "credits" or "license" for more information.
Started with C:/Steve/.pythonrc
  >>> import os; print os.environ["screwup"]
"This is Windows"
  >>>

It turns out that there's code in os.py specifically for os2 and NT 
systems, wherein a subclass of userDict is declared that used 
case-insensitive pattern matching:

  >>> os.environ.__class__
<class os._Environ at 0x0098CCC0>
  >>>

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From mystilleef at gmail.com  Mon Sep 18 12:44:08 2006
From: mystilleef at gmail.com (mystilleef)
Date: 18 Sep 2006 09:44:08 -0700
Subject: Help me use my Dual Core CPU!
In-Reply-To: <7xy7siva9z.fsf@ruckus.brouhaha.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<1158235392.623992.138340@i42g2000cwa.googlegroups.com>
	<7xy7siva9z.fsf@ruckus.brouhaha.com>
Message-ID: <1158597848.323346.106080@k70g2000cwa.googlegroups.com>


Paul Rubin wrote:
> "mystilleef" <mystilleef at gmail.com> writes:
> > I use D-Bus (Python). I recommend it. I don't know how cross platform
> > it is. However, it supports message passing of most built-in (strings,
> > ints, lists, dictionaries etc) Python objects accross processes. You
> > can mimick clean Erlang-like concurrency with it. It is the future of
> > IPC on Desktop Unix. Given Python's crippled threading implementation,
> > it can play a role in making your Python applications scalable, with
> > regards to concurrency. I am recommending D-Bus because I have used it,
> > and I know it works. I didn't read this of a newsgroup or mailing list.
>
> It looks useful, but as far as I can tell, it's just another IPC
> thingie that works through sockets, sort of like pyro without the
> remote objects.  I don't see how it's related to Erlang-like
> concurrency (which means ultralightweight coroutines, not heavyweight
> Unix or Windows processes).  I think Python concurrency schemes get
> interesting when they at least share memory (like POSH).  Otherwise I
> think of them more as "distributed" than "concurrent".

I always forget to bring up Stackless Python in this kinda discussions.
I haven't used, but I plan porting one of my projects to it.

http://www.stackless.com/about/sdocument_view



From reply at group.invalid  Tue Sep 26 01:34:36 2006
From: reply at group.invalid (Pom)
Date: Tue, 26 Sep 2006 05:34:36 GMT
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <5w2Sg.12716$v%4.6241@newsread1.news.pas.earthlink.net>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<5w2Sg.12716$v%4.6241@newsread1.news.pas.earthlink.net>
Message-ID: <MZ2Sg.96594$AF6.1413172@phobos.telenet-ops.be>

Dennis Lee Bieber wrote:
> 	It might be more economical to perform the conversion while fetching
> the data:
> 
> mdict = {}
> for rec in crsr:
> 	mdict[rec[0]] = rec[1:]
> 

I didn't think of that.  I just took the fetchall() from my first 
version (where I looped through the tuples, which was very slow)

I just dropped the .fetchall() part, and as you said: it works fine, 
with 1 copy less. (but it doesn't save me time)

dict((int(row[0]), row[1:]) for row in cursor)


thanks!


From ldo at geek-central.gen.new_zealand  Tue Sep 26 20:44:02 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 12:44:02 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
	<efa864$rbf$1@lust.ihug.co.nz>
	<1159285039.913453.194150@h48g2000cwc.googlegroups.com>
Message-ID: <efcheo$2cc$4@lust.ihug.co.nz>

In message <1159285039.913453.194150 at h48g2000cwc.googlegroups.com>, George
Sakkis wrote:

> Lawrence D'Oliveiro wrote:
> 
>> Fredrik Lundh wrote:
>> > you're not the designer...
>>
>> I don't have to be. Whoever the designer was, they had not properly
>> thought through the uses of this function. That's quite obvious already,
>> to anybody who works with HTML a lot. So the function is broken and needs
>> to be fixed.
>>
>> If you're worried about changing the semantics of a function that keeps
>> the same "cgi.escape" name, then fine. We delete the existing function
>> and add a new, properly-designed one. _That_ will be a wake-up call to
>> all the users of the existing function to fix their code.
> 
> Wow. Are you always that arrogant for things you know very little
> about, or just plain stupid ?

Wow. Express an opinion, and get called names by trolls.


From prudek at bvx.cz  Tue Sep 19 14:56:38 2006
From: prudek at bvx.cz (Milos Prudek)
Date: Tue, 19 Sep 2006 20:56:38 +0200
Subject: xmlrpc, extract data from http headers
In-Reply-To: <1158409120.687682.153870@i3g2000cwc.googlegroups.com>
References: <mailman.133.1158333835.10491.python-list@python.org>
	<mailman.170.1158398312.10491.python-list@python.org>
	<1158409120.687682.153870@i3g2000cwc.googlegroups.com>
Message-ID: <200609192056.39065.prudek@bvx.cz>


> A better solution would be to extract cookies from headers in the
> request method and return them with response (see the code below). I

Full solution! Wow! Thank you very much. I certainly do not deserve such 
kindness. Thanks a lot Filip!

-- 
Milos Prudek


From nikhilhs1110 at gmail.com  Tue Sep 12 16:48:49 2006
From: nikhilhs1110 at gmail.com (nikhilhs1110 at gmail.com)
Date: 12 Sep 2006 13:48:49 -0700
Subject: Getting PyXML and dom/minidom to ignore whitespace
Message-ID: <1158094128.941157.63560@i3g2000cwc.googlegroups.com>

Is there a way to get PyXML and dom/minidom to ignore whitespace?  Or a
simple way to strip it away?

Thanks.

-Nick



From efrat_regev at yahoo.com  Wed Sep 27 19:35:41 2006
From: efrat_regev at yahoo.com (efrat)
Date: Thu, 28 Sep 2006 02:35:41 +0300
Subject: Questions on Using Python to Teach Data Structures and Algorithms
Message-ID: <451b24a5@news.bezeqint.net>

   Hello,

   I'm planning to use Python in order to teach a DSA (data structures 
and algorithms) course in an academic institute. If you could help out 
with the following questions, I'd sure appreciate it:
1. What exactly is a Python list? If one writes a[n], then is the 
complexity Theta(n)? If this is O(1), then why was the name "list" 
chosen? If this is indeed Theta(n), then what alternative should be 
used? (array does not seem suited for teaching purposes.)
2. Suppose I have some file example.py, and I'd like to incorporate it 
**into** part of an HTML page with nice syntax highlighting and all the 
shebang. Is there an easy way to do so?
(Sorry, but any Google query involving "Python" and "HTML" (with any 
other additional terms) led to Python HTML processing libraries.)
3. Are there any useful links for Python/DSA education? I found "Data 
Structures and Algorithms with Object Oriented Design Patterns" 
(http://www.brpreiss.com/books/opus7/html/book.html). It is a fine book, 
but it is unsuitable: my students are electrical-engineers, and barely 
know how to program; teaching them DSA, python, **and** stuff like the 
visitor pattern seems impossible.

   Python is such a cool language - I'm really hoping the students will 
enjoy it as much as I do. Once again, many thanks for helping out with this.

   Thanks,

   Efrat


From frank at chagford.com  Sat Sep 16 02:08:01 2006
From: frank at chagford.com (Frank Millman)
Date: 15 Sep 2006 23:08:01 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
Message-ID: <1158386881.666330.246150@d34g2000cwd.googlegroups.com>


Dale Strickland-Clark wrote:
> Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
> a newly inserted record?
>
> I've tried three Python client libraries, including psycopg2, and where they
> support cursor attribute 'lastrowid' (Python DB API 2.0), it is always
> zero.
>
> Anyone figured this out?
>
> Thanks.
> --
> Dale Strickland-Clark
> Riverhall Systems - www.riverhall.co.uk

I used to use 'select lastval()', but I hit a problem. If I insert a
row into table A, I want the id of the row inserted. If it is a complex
insert, which triggers inserts into various other tables, some of which
may also be auto-incrementing, lastval() returns the id of the row last
inserted into any auto-incrementing table.

I therefore use the following -
    cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)

where tableid is the specific table I want (in this example, table A),
and columnid is the column specified as the auto-incrementing one.

>From the PostgreSQL docs - "Notice that because this is returning a
session-local value, it gives a predictable answer whether or not other
sessions have executed nextval since the current session did."

Frank Millman



From wahab at chemie.uni-halle.de  Fri Sep 29 15:32:11 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Fri, 29 Sep 2006 21:32:11 +0200
Subject: creating a small test server on my local computer
In-Reply-To: <efeTg.56$1n3.620@news.tufts.edu>
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
Message-ID: <efjskl$23j$1@mlucom4.urz.uni-halle.de>

Thus spoke John Salerno (on 2006-09-29 21:13):
> Irmen de Jong wrote:
>> John Salerno wrote:
>>> Ok, this is completely unnecessary so I don't intend to get into stuff 
>>> that's beyond my skill, but I'm wondering how simple it would be to 
>>> use Python to create a server that runs on my computer 
>> Why do you need to use Python for the server?
> Well, perhaps I don't know what I'm talking about. I'm on an XP machine 
> and I just needed a way to test my web pages, and I thought Python could 
> be used to create a server to do this. But I know nothing about network 
> programming...

My advice would be (because Apache installations on
WinXP don't usually support Python (except pulling
the whole thing into each CGI invocation) - download
and install a VMWare Player
   ( http://www.vmware.com/products/player/ ),
download a pre-built virtual machine w/Apache and
Python preinstalled and configured (=> 190MB):
   ( http://www.rpath.org/rbuilder/project/lamp/build?id=4912 )
and give the virtual machine a shared ip number
on your own network card (mostly trivial) - thats it.

Then - you can use the virtual machine as your own full
blown web server, put your Python stuff on it (e.g. via
Samba or SSH/SFTP, => http://winscp.net/eng/download.php -)
and therefore don't bother w/setting up the whole thing
yourself.


Regards

Mirco


From vvarghese3 at gmail.com  Fri Sep  8 15:19:17 2006
From: vvarghese3 at gmail.com (VV)
Date: 8 Sep 2006 12:19:17 -0700
Subject: Best Python Books and Sites
Message-ID: <1157743157.594372.234280@p79g2000cwp.googlegroups.com>

I have been enjoying the discussion here for a while, and would like to
ask for some help.

I recently launched a question answer site that connects people with
problems to those with solutions. We let people with problems pay
solution providers $0.25 for problems in over 100 categories.

As part of our service we let people review past problems and also
provide resources for their own research.

Can anyone tell me (in their opinion)?

What are the best three sites for python information?
What are the best three python books they own?

I would like to compile a list and include it on my site.

Regards.

Vibi Varghese
www.problima.com
A place to bring problems
..and  to get paid to solve them



From blair.houghton at gmail.com  Sat Sep 23 21:12:45 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 23 Sep 2006 18:12:45 -0700
Subject: Timeline for Python?
In-Reply-To: <mailman.497.1159035007.10491.python-list@python.org>
References: <mailman.497.1159035007.10491.python-list@python.org>
Message-ID: <1159060365.363391.238090@d34g2000cwd.googlegroups.com>


wesley chun wrote:
>
> 1. never write against older versions of Python... you will only
>     obsolete your book even faster (well, "sooner")

I believe there is some market for documentation of older
versions of software.  Many installations are constrained
by the cost of upgrading and can not migrate to a newer
version.  Meanwhile, they are laboring under the old
documentation, which, in the case of open-source stuff,
is often thoroughly inadequate.  Books with accurate
information would help them, and would have helped me, in
many cases.

But I don't think it's a big enough market that many people
would consider skipping the new-version market, which is
much bigger, when trying to decide what to write about.

--Blair



From puppet_sock at hotmail.com  Wed Sep  6 13:24:36 2006
From: puppet_sock at hotmail.com (Puppet_Sock)
Date: 6 Sep 2006 10:24:36 -0700
Subject: EVIDENCE: 911 was CONTROLLED DEMOLITION to make muslims 2nd class
In-Reply-To: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>
References: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>
Message-ID: <1157563476.740274.230470@e3g2000cwe.googlegroups.com>

thermate at india.com wrote:
[snip rubbish]

You cannot even spell your own handle.
http://en.wikipedia.org/wiki/Thermite
Socks



From rdiaz02 at gmail.com  Wed Sep 27 05:01:53 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Wed, 27 Sep 2006 11:01:53 +0200
Subject: Battlefield Weapon Popularity Trend (was: Computer Language
	Popularity Trend)
In-Reply-To: <efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
Message-ID: <624934630609270201t3878520ehf4a45e2cd4058a0c@mail.gmail.com>

On 9/27/06, Mirco Wahab <peace.is.our.profession at gmx.de> wrote:
> Thus spoke Xah Lee (on 2006-09-27 05:03):
>
> > This page gives a visual report of computer languages's
> > popularity, as indicated by their traffic level in newsgroups.
> > ...
> > http://xahlee.org/lang_traf/index.html
>
> When the Samurai of medieval Japan were confronted
> with new 'battlefield language', e.g. early Shotguns,
> they resisted because one could push any peasant

shouldn't this be "they [the Samurai] did not resist"?

> behind a gun -- thus nullifying the result of
> the Samurai Art of Warfare that required a life
> full of learning - in the end wiping out a
> complete culture.
>
> Same trend here - the reason is: 'cost' ;-)
>
>
> Regards & scnr
>
> Mirco
>
> f'up: clpm, clp
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From faulkner612 at comcast.net  Wed Sep  6 20:32:01 2006
From: faulkner612 at comcast.net (faulkner)
Date: 6 Sep 2006 17:32:01 -0700
Subject: Cross-platform application restart?
In-Reply-To: <B5mdnYOdBdD0p2LZnZ2dnUVZ_sGdnZ2d@comcast.com>
References: <B5mdnYOdBdD0p2LZnZ2dnUVZ_sGdnZ2d@comcast.com>
Message-ID: <1157589121.791075.44660@m73g2000cwd.googlegroups.com>

asynchronously start a process which waits for the parent to close,
then starts your script.

cmd = "python -c 'import time,os;time.sleep(2);os.system(YOUR_SCRIPT)'"
if os.name == 'nt':
    cmd = 'start ' + cmd
else:
    cmd += ' &'
subprocess.Popen(cmd, shell=True)
sys.exit()

Heikki Toivonen wrote:
> Is there any way to restart a Python (GUI) application that would work
> on Windows, Mac OS X and Linux? I'd like to provide a "restart" button
> to a dialog that would restart the application to pick new changes or
> start with different options.
> 
> -- 
>   Heikki Toivonen



From breakfastea at gmail.com  Thu Sep 21 12:02:52 2006
From: breakfastea at gmail.com (breakfastea at gmail.com)
Date: 21 Sep 2006 09:02:52 -0700
Subject: How to return an "not string' error in function?
In-Reply-To: <Xns9845A46C1381Fduncanbooth@127.0.0.1>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<Xns9845A46C1381Fduncanbooth@127.0.0.1>
Message-ID: <1158854572.177885.245920@e3g2000cwe.googlegroups.com>

Or yes that seems a handy way:)

Thanks for all wonderful people here:)

Peace


Duncan Booth wrote:
> Tim Chase <python.list at tim.thechases.com> wrote:
>
> > This will return true for both regular strings and for unicode
> > strings.  If that's a problem, you can use
> >
> > >>> import types
> > >>> isinstance("hello", types.StringType)
> > True
> > >>> isinstance(u"hello", types.StringType)
> > False
> > >>> isinstance("hello", types.UnicodeType)
> > False
> > >>> isinstance(u"hello", types.UnicodeType)
> > True
> >
> > ...or, if you don't want to qualify them with "types." each time,
> > you can use
> >
> > >>> from types import StringType, UnicodeType
> >
> > to bring them into the local namespace.
>
> They already are in the builtin namespace under their more usual names of
> str and unicode respectively, so there is no need to import them, just use
> them:
> 
> >>> isinstance("hello", str)
> True
> 
> ... etc ...



From fredrik at pythonware.com  Mon Sep 25 10:20:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 16:20:52 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
Message-ID: <ef8ok7$4si$1@sea.gmane.org>

Max M wrote:

> It also makes the  escaped html harder to read for standard cases.

and slows things down a bit.

(cgi.escape(s, True) is slower than cgi.escape(s), for reasons that are
obvious for anyone who's looked at the code).

</F> 





From S.P.Hammond at sms.ed.ac.uk  Mon Sep 25 15:17:14 2006
From: S.P.Hammond at sms.ed.ac.uk (Sean Hammond)
Date: Mon, 25 Sep 2006 20:17:14 +0100
Subject: Embed Python in HTML?
Message-ID: <1159211834.10848.8.camel@dwarmo.inf.ed.ac.uk>

Forgive my ignorance, but I sometimes write custom dynamic web-pages
using PHP, by simply embedding PHP in HTML with <?php ?> tags, and
renaming for example index.html to index.php and making it executable. I
only use this for very minor things like calling a script, and don't
really want to learn any more PHP as it looks awful. So I was wondering,
is it possible to throw together dynamic web pages like this using
Python or other languages? If so, can anyone point me to any relevant
tutorials, references or other info?

Thanks



From tim.golden at viacom-outdoor.co.uk  Wed Sep 20 10:06:44 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 20 Sep 2006 15:06:44 +0100
Subject: Using py2exe to wrap a service?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B47D@vogbs009.gb.vo.local>

[Maria.Reinhammar at accalon.com]

[... snip ...]

|   File "win32com\client\__init__.pyc", line 73, in GetObject
|   File "win32com\client\__init__.pyc", line 88, in Moniker
| pywintypes.com_error: (-2147221020, 'Invalid syntax', None, None)
| 
| The offending line is:
| import active_directory as AD
| ...
| for item in AD.search ("objectCategory='Person'"):

Not infrequently -- and quite bizarrely -- "Invalid syntax"
errors in COM sometimes come down to a mishandling of threading. 
To ask the obvious: do you have a pythoncom.CoInitialize ()
somewhere in your code?

This is a bit invisible, because Services are inherently
threaded, while you were probably running it before
unthreaded.

May not be the answer, but worth a try.

TJG

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From sjdevnull at yahoo.com  Thu Sep 28 23:18:43 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 28 Sep 2006 20:18:43 -0700
Subject: wxPython and threading issue
In-Reply-To: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
Message-ID: <1159499923.311082.63610@h48g2000cwc.googlegroups.com>

Patrick Smith wrote:
> Hi,
> I'm hoping someone here will be able to help as I've been struggling with
> this problem for a few days now.
>
> I'm working on an application that is creating a ProgressDialog, and then
> creating a thread that runs a function from another module in the program.
>
> The problem is, when the cancel button on the ProgressDialog is pressed, the
> thread that was created continues to run.  How can I make it so that when
> the cancel button on the dialog is clicked, the spawned thread dies?

Have the main thread set a flag telling the worker thread to exit, and
have the worker thread check that periodically when it knows it's in a
safe state to exit.



From duncan.booth at invalid.invalid  Tue Sep 26 10:36:04 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 14:36:04 GMT
Subject: Ordered dicts
References: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
	<Xns984A91006BF71duncanbooth@127.0.0.1>
	<1159279680.109741.30330@b28g2000cwb.googlegroups.com>
Message-ID: <Xns984A9EB426911duncanbooth@127.0.0.1>

bearophileHUGS at lycos.com wrote:
>> Then if you reinsert the deleted value it goes back in at its
>> original order. 
> 
> Uhm, this doesn't sound good. Thank you, I missed this detail :-)
> Then the doubly-linked list, and the links fixing seem necessary...
> 
An alternative to a doubly linked list might be to never reuse deleted 
entries but if the number of deleted entries exceeds a certain proportion 
just pack the dictionary.


From DustanGroups at gmail.com  Sun Sep 24 11:27:57 2006
From: DustanGroups at gmail.com (Dustan)
Date: 24 Sep 2006 08:27:57 -0700
Subject: webbrowser module's Firefox support
In-Reply-To: <ef5n4m$v08$1@news.albasani.net>
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
	<1159053936.813103.38840@d34g2000cwd.googlegroups.com>
	<ef5n4m$v08$1@news.albasani.net>
Message-ID: <1159111677.712353.270370@b28g2000cwb.googlegroups.com>

>
> This is a bug, and has now been fixed in SVN. As a workaround, you can
> edit the webbrowser.py file and remove the close_fds and preexec_fn arguments
> to Popen.
> 
> Georg

Finally! It's working. Thank you so much!



From prashant.burghate at wipro.com  Tue Sep 12 08:16:15 2006
From: prashant.burghate at wipro.com (prashant.burghate at wipro.com)
Date: Tue, 12 Sep 2006 17:46:15 +0530
Subject: error
Message-ID: <925928EF61EB8142A25835422EC26A81015498D2@PNE-HJN-MBX01.wipro.com>




Hi,

Today is my first day of working on python. I want to execute python
script through C++ program. I found one very good article with example
at http://docs.python.org/ext/pure-embedding.html.
I followed the procedure as given, the code is compiled but while
running it is giving error like:

ImportError: No module named multiply
Failed to load "multiply"

Here are the steps I followed, please suggest where I am wrong and how
can I remove the above error.

Step 1: Copied the given C program into a file called test.cpp (using vi
editor)
Step 2: Compiled it using : g++ test.cpp  /usr/lib/libpython2.4.so
(created a.out)
Step 3: Wrote the given script of multipication in a file named as
multiply (using vi editor)
Step 4: But while running the program using :    ./a.out multiply
multiply 3 2
	  Getting this error:                       ImportError: No
module named multiply
	 			   		              Failed to
load "multiply"

Please help me out.

Thanks & Regards,
Prashant Burghate    

Project Engineer,
Embedded Systems,
Wipro Technologies, Pune.
Tel: +91-20-22933700 Extn: 51570
Mob. # 9850428252
Email: prashant.burghate at wipro.com


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From deets at nospam.web.de  Mon Sep 18 10:24:22 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 18 Sep 2006 16:24:22 +0200
Subject: Interact with system command prompt
References: <1158588506.989070.257550@m7g2000cwm.googlegroups.com>
Message-ID: <4n7ogmF8slojU1@uni-berlin.de>

billie wrote:

> Hi all. I would like to know if there's some python framework able to
> interact with system command prompt (cmd.exe or /bin/sh, depending on
> the system) from python.
> I need something that supports key/path auto completion by pressing TAB
> button and the possibility to use interactive programs like ftp, gpg or
> even vi.
> I would like to write a remote shell application the best featured as
> possible and I'm wondering if Python is able to emulate the
> functionalities of applications like telnet or ssh.

Check out IPython.

http://ipython.scipy.org/


Diez


From bj_666 at gmx.net  Fri Sep 15 05:19:20 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 15 Sep 2006 11:19:20 +0200
Subject: add without carry
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
Message-ID: <pan.2006.09.15.09.19.19.907922@gmx.net>

In <1158308274.680123.100070 at i42g2000cwa.googlegroups.com>, Hugh wrote:

> I would like to perform an addition without carrying of two integers...
> I've got no idea how to do this in python, although I've been using it
> for web/cgi/db work for a few years now.

Your description is a bit vague.  What is `without carrying`?  Do you want
to limit the result to a given bit length with a "wrap around" behavior if
the number gets too large to fit into those bits?  Then this should do the
trick:

  a = (b + c) & (2**bits - 1)

Ciao,
	Marc 'BlackJack' Rintsch


From usenet at nicko.org  Sat Sep  2 05:04:27 2006
From: usenet at nicko.org (Nicko)
Date: 2 Sep 2006 02:04:27 -0700
Subject: python loops
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>
	<20060831193353.02FD61E4002@bag.python.org>
	<mailman.10240.1157105262.27775.python-list@python.org>
Message-ID: <1157187866.833841.295930@m79g2000cwm.googlegroups.com>

Fredrik Lundh wrote:
> Michael.Coll-Barth at VerizonWireless.com wrote:
>
> > I thought the xrange was preferred?  for x in xrange(length):
>
> preferred by premature optimization freaks, perhaps.

There's a huge difference between not being profligate with resources
and premature optimisation. In the case of the idiom "for i in
range(x):..." there absolutely no utility whatsoever in creating and
recording the list of objects. Unless it makes a difference to code
structure or maintainability, I think that not creating stacks of
objects you don't need is basic code hygiene and not freakish premature
optimisation.

>   in practice, if the
> range is reasonably small and you're going to loop over all the integers,
> it doesn't really matter.

This is true, but getting into habits that don't matter most of the
time, but have an performance and stability impact some of the time, is
worth discouraging.

> (the range form creates a list and N integers up front; the xrange form
> creates an iterator object up front and N integers while you're looping.
> what's faster depends on what Python version you're using, and some-
> times also on the phase of the moon)

Using range() is only faster on lists so small then the cost is tiny
anyway. On any substantial loop it is quite a bit slower and has been
since python 2.3

Nicko



From kode4u at gmail.com  Thu Sep 28 21:13:19 2006
From: kode4u at gmail.com (kode4u)
Date: 28 Sep 2006 18:13:19 -0700
Subject: How to get ip setting, dynamic ip or static ip?
In-Reply-To: <1159396061_1193@sp6iad.superfeed.net>
References: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>
	<1158892362_9487@sp6iad.superfeed.net>
	<1159377361.763313.179530@m7g2000cwm.googlegroups.com>
	<1159396061_1193@sp6iad.superfeed.net>
Message-ID: <1159492399.418361.232600@i42g2000cwa.googlegroups.com>

Thank you very much.

Does the wmi object can modify the ip address?

Roger Upole wrote:
> This means the unicode object contains characters that
> can't be represented in the default encoding.  Try encoding it
> in another character set, something like
>
> adapter.Properties_['Caption'].Value.encode('mbcs')
> (you may need to use a different codec)
>
>       Roger
>
>
> "kode4u" <kode4u at gmail.com> wrote in message news:1159377361.763313.179530 at m7g2000cwm.googlegroups.com...
> > There are some errors in result:
> >>>> import win32com.client
> >>>> wmi=win32com.client.GetObject('winmgmts:')
> >>>> adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
> >>>> for adapter in adapters:
> > ...     print adapter.Properties_['Caption'],
> > adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']
> > ...
> > [00000001] Realtek RTL8139 Family PCI Fast Ethernet NIC True
> > (u'169.254.52.213',)
> > Traceback (most recent call last):
> >  File "<input>", line 2, in <module>
> >  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py", line
> > 187, in __str__
> >    return str(self.__call__())
> > UnicodeEncodeError: 'ascii' codec can't encode characters in position
> > 15-19: ordinal not in range(128)
> >
> > How to deal with it?
> >
> >
> >
> > Roger Upole wrote:
> >> "kode4u" <kode4u at gmail.com> wrote in message news:1158844868.766047.73270 at b28g2000cwb.googlegroups.com...
> >> > How to use python get my windows box's ip setting type? Dynamic ip, or
> >> > static ip?
> >> >
> >> > If it's static ip, what's the exact value?
> >> >
> >>
> >> You can use WMI to list properties of your network adapter(s):
> >> import win32com.client
> >> wmi=win32com.client.GetObject('winmgmts:')
> >> adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
> >> for adapter in adapters:
> >>     print adapter.Properties_['Caption'], adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']
> >>
> >>        Roger
> >>
> >>
> >>
> >>
> >> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
> >> http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
> >> ---= East/West-Coast Server Farms - Total Privacy via Encryption =---
> >



From theller at python.net  Thu Sep 28 14:41:10 2006
From: theller at python.net (Thomas Heller)
Date: Thu, 28 Sep 2006 20:41:10 +0200
Subject: ctypes.c_void_p(-1) might not be C return (void *) -1
In-Reply-To: <1159464342.982140.200420@b28g2000cwb.googlegroups.com>
References: <1159464342.982140.200420@b28g2000cwb.googlegroups.com>
Message-ID: <efh508$qsm$1@sea.gmane.org>

p.lavarre at ieee.org schrieb:
>> Subject: Python CTypes translation of (pv != NULL)

I've started a wiki page where I already added an entry about the above question.
Do you think the entry would have answered your question?

http://starship.python.net/crew/theller/moin.cgi/CodeSnippets

(My wiki should really be upgraded to a newer moinmoin version, however
it might be better to use another wiki for ctypes, maybe the python.org one, for this
stuff.)

> And so then the next related Faq is:
> 
> Q: How should I test for ((void *) -1)?
> 
> A:
> 
> (pv == 0xffffFFFF) works often.
> 
> (ctypes.cast(pv, ctypes.c_void_p).value == 0xffffFFFF) works better.
> 
> ((void *) -1) appears often in 32-bit Windows, behind the name
> INVALID_HANDLE_VALUE of the type HANDLE that is def'ed as the type
> PVOID that is def'ed as (void *).  -1 is xffffFFFF in 32-bit two's
> complement.
> 
> The more complex comparison works more often because specifying a
> restype doesn't decide the __class__ of the result.

True, in principle.  For me, on Windows, c_void_p(-1).value is the same
as c_void_p(0xFFFFFFFF).value, but it is -1 not 0xFFFFFFFF.

Worse, on 64-bit systems c_void_p(-1).value is 184467440737009661615, which
is the same as 0xFFFFFFFFFFFFFFFF.

So, to be portable, INVALID_HANDLE_VALUE should be defined like this:

INVALID_HANDLE_VALUE = c_void_p(-1).value

and your test would become

(ctypes.cast(pv, ctypes.c_void_p).value == INVALID_HANDLE_VALUE

Thomas

PS: It is inconsistent that the .value of a c_void_p instance is signed on
32-bit systems, and unsigned on 64-bit systems, but it seems we have to live
with that.  Fortunately, the c_void_p constructor accepts both signed and unsigned
Python ints and longs, so it should be possible to work around that fact.



From bearophileHUGS at lycos.com  Sat Sep 23 18:10:41 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 23 Sep 2006 15:10:41 -0700
Subject: Spliting a string on non alpha characters
In-Reply-To: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>
References: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>
Message-ID: <1159049441.768676.209930@i3g2000cwc.googlegroups.com>

stdazi:

The RE-based solutions look good. Here is a pair of alternative
solutions:

s1 = 'foo bar- blah/hm.lala'
r1 = ['foo', 'bar', 'blah', 'hm', 'lala']

s2 = 'foo////bbbar.. xyz'
r2 = ['foo', 'bbbar', 'xyz']

table = "".join((c if c.isalpha() else " " for c) in map(chr,
range(256)))
#table = "".join((" "+c)[c.isalpha()] for c in map(chr, range(256))) #
Py2.4
print s1.translate(table).split()
print s2.translate(table).split()

Or:

from itertools import groupby
print ["".join(gr) for he,gr in groupby(s1, str.isalpha) if he]
print ["".join(gr) for he,gr in groupby(s2, str.isalpha) if he]

Bye,
bearophile



From jaysherby at gmail.com  Mon Sep 18 20:12:13 2006
From: jaysherby at gmail.com (Jay)
Date: 18 Sep 2006 17:12:13 -0700
Subject: gnome module
In-Reply-To: <1158618094.019324.136190@h48g2000cwc.googlegroups.com>
References: <1158618094.019324.136190@h48g2000cwc.googlegroups.com>
Message-ID: <1158624733.752994.42150@m7g2000cwm.googlegroups.com>

Sorry.  Nevermind.  It's no longer an issue.  :-)
Jay wrote:
> Am I correct in assuming that I can use the gnome module to minimize
> all windows (aka show desktop)?  If so, how?



From grante at visi.com  Fri Sep 15 10:41:26 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 14:41:26 -0000
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
	<4mv51sF7t5lmU1@uni-berlin.de>
Message-ID: <12glesm56ghquc4@corp.supernews.com>

On 2006-09-15, Diez B. Roggisch <deets at nospam.web.de> wrote:

>>>> Is it possible to specify which port to use as the outbound port on a
>>>> connection? 
>> [...]
>>>> Specifically, I'm trying to write an FTP host, and I'm trying to
>>>> implement the PORT command. 
>>>
>>> AFAIK you neither can't do that nor need it.
>> 
>> It's not the issue here, but to specify the outgoing port
>> call bind(('', portnum)) before connect().
>
> I wasn't aware of that. Cool.

It's an interesting thing to know, but I've been doing TCP
stuff for many years and never run across a situation where
it's something I needed to do.  If somebody in this thread
actually does need to do it, I'd be curious bout why...

-- 
Grant Edwards                   grante             Yow!  .. this must be what
                                  at               it's like to be a COLLEGE
                               visi.com            GRADUATE!!


From fredrik at pythonware.com  Tue Sep 26 07:21:03 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 13:21:03 +0200
Subject: Printing a percent sign
In-Reply-To: <1159268765.544655.229070@i3g2000cwc.googlegroups.com>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>	<efaq7s$rfd$6@lust.ihug.co.nz>	<1159263309.699677.301130@m7g2000cwm.googlegroups.com>	<efavlm$6ek$2@lust.ihug.co.nz>
	<1159268765.544655.229070@i3g2000cwc.googlegroups.com>
Message-ID: <efb2ev$fk8$1@sea.gmane.org>

John Machin wrote:

> I'll take your word for it; it's been quite a while :-) *Something* in
> the dim dark past worked like that

makefiles?

</F>



From aisaac0 at verizon.net  Sat Sep 23 15:11:55 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Sat, 23 Sep 2006 19:11:55 GMT
Subject: "what's new" missing
References: <ODfRg.183$Kw1.8@trnddc05>
Message-ID: <%FfRg.184$Kw1.94@trnddc05>


"Alan Isaac" <aisaac0 at verizon.net> wrote in message
news:ODfRg.183$Kw1.8 at trnddc05...
> Where does one get the
> "What's New" document for Python 2.5?
> http://docs.python.org/dev/whatsnew/whatsnew25.html
> pretends to hold it, but the links are corrupt.


OK, here it is:
http://docs.python.org/whatsnew/whatsnew25.html
Sorry for the noise.
Alan Isaac




From sandravandale at yahoo.com  Mon Sep  4 13:17:56 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 4 Sep 2006 10:17:56 -0700
Subject: Prevent self being passed to a function stored as a member
	variable?
In-Reply-To: <mailman.10341.1157388723.27775.python-list@python.org>
References: <1157387972.227609.326880@e3g2000cwe.googlegroups.com>
	<mailman.10341.1157388723.27775.python-list@python.org>
Message-ID: <1157390276.837035.98960@h48g2000cwc.googlegroups.com>

Qiangning Hong wrote:
> Do you really get that error?

Sorry, my bad. You're correct of course. I had accidentally passed an
object, by naming it the same as the function, instead of my function,
and the object had __call__ defined, and took exactly two parameters,
just like my function, but one of them beign self. So when I passed two
arguments, it got three, and that's how I was confused into thinking
self was being passed to my function (because it was, but not to my
function.) All a big foulup on my part. I might have worked on that
problem for a while before figuring it out, thanks!

-Sandra



From yorklee70 at gmail.com  Sat Sep 23 21:28:20 2006
From: yorklee70 at gmail.com (York)
Date: Sat, 23 Sep 2006 18:28:20 -0700
Subject: Regular expression confusion
Message-ID: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>

I have two backslash - a. and I want to replace them with one backslash, 
but I failed:

 >>> import re
 >>> a = '\\\\'
 >>> re.sub(r'\\\\', '\\', '\\\\')
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "/usr/lib/python2.3/sre.py", line 143, in sub
     return _compile(pattern, 0).sub(repl, string, count)
   File "/usr/lib/python2.3/sre.py", line 258, in _subx
     template = _compile_repl(template, pattern)
   File "/usr/lib/python2.3/sre.py", line 245, in _compile_repl
     raise error, v # invalid expression
sre_constants.error: bogus escape (end of line)
 >>>

anybody knows why?

Thanks,

York


From nomail at nixmail.com  Sat Sep  2 06:29:07 2006
From: nomail at nixmail.com (DarkBlue)
Date: Sat, 02 Sep 2006 18:29:07 +0800
Subject: Netstat Speed
References: <44f95c2c@127.0.0.1>
Message-ID: <44f95cf3@127.0.0.1>

s=line
is actually indented even if it does not appear to be so :)

Db


From steve at holdenweb.com  Tue Sep 26 11:43:52 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 11:43:52 -0400
Subject: Python extensions on Win32
In-Reply-To: <4518b85d$0$19215$9b622d9e@news.freenet.de>
References: <mailman.615.1159242697.10491.python-list@python.org>
	<4518b85d$0$19215$9b622d9e@news.freenet.de>
Message-ID: <efbhq7$b5u$2@sea.gmane.org>

Martin v. L?wis wrote:
> Cliff Wells schrieb:
[...]
>>4) How much alcohol will be required to forget all this when I'm done?
> 
> 
> You shouldn't forget it. Instead, you should write your experience
> into "the Web", so that others have a flatter learning curve.
> 
After which worthy effort I'll be happy to provide enough beer to erase 
the experience from your mind, at least temporarily. The other way to 
forget it is to turn 50 ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jrhastings at gmail.com  Thu Sep  7 01:38:20 2006
From: jrhastings at gmail.com (jrhastings at gmail.com)
Date: 6 Sep 2006 22:38:20 -0700
Subject: Setting windows/win32 timezone from python
Message-ID: <1157607500.249903.223150@p79g2000cwp.googlegroups.com>

I know there are many threads on this topic but I haven't yet found an
answer to this question.  I'd like to map from a utc to a local time in
an arbitrary timezone (not necessary the default local timezone).

To do this on UNIX is relatively straightforward by setting the TZ
environment variable (and calling time.tzset()).  On Windows, one can
get close to the answer using the pytz module (to load the timezone
based on the standard UNIX names like US/Eastern and Australia/Sydney).
 However, the mapping from utc -> local time won't have the correct
notion of DST for the utc you specify because the OS only knows about
the machine's true localtime.  I believe that the only way to really
get the right answer is to temporarily set the machine's local
timezone, which is the standard UNIX approach.

Here's something that _almost_ works in Windows:

import datetime, pytz
d = datetime.datetime.fromtimestamp(1143408899,
pytz.timezone("Australia/Sydney"))
d.strftime("%Y%m%d %H:%M:%S")

-> 20060327 07:34:59, but it _should_ be 08:34:59

Here's code that does work in UNIX.

import datetime
import os
import time

tz_orig = os.environ['TZ']

# this code only works on unix
def utc_to_date_time(utc, tz=tz_orig):

    try:
        if (tz != tz_orig):
            os.environ['TZ'] = tz
            time.tzset()

        dt = datetime.datetime.fromtimestamp(utc)
        return (dt.strftime("%Y%m%d"), dt.strftime("%H%M%S"))

    finally:

        if (os.environ['TZ'] != tz_orig):
            os.environ['TZ'] = tz_orig
            time.tzset()

Thanks,

- Joe



From fakeaddress at nowhere.org  Sat Sep  2 14:45:42 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Sat, 02 Sep 2006 18:45:42 GMT
Subject: disgrating a list
In-Reply-To: <1157135184.608704.277720@h48g2000cwc.googlegroups.com>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
Message-ID: <qjkKg.23279$gY6.4520@newssvr11.news.prodigy.com>

Tal Einat wrote:
> Tim Chase wrote:
>> I'm not sure if '__iter__' is the right thing to be looking for,
>> but it seems to work at least for lists, sets, dictionarys (via
>> their keys), etc.  I would use it because at least then you know
>> you can iterate over it
> 
> AFAIK and as seen throughout posts on c.l.py, the best way to check if
> something is iterable is:
> 
> try:
>     iter(obj)
> except TypeError:
>     <obj is not iterable>
> else:
>     <obj is iterable>

It's a trap: there's no good general Pythonic flatten().

In Tim's version flatten(['hello', [['world']]]) is
['hello', 'world']. With the try...except above, it comes
out ['h', 'e', 'l', 'l', 'o', 'w', 'o', 'r', 'l', 'd']
That's not usually what people want.

It's not just a string problem. Flattening arbitrary
sequences of Foo-like things assumes that no one
implements objects that are both Foos and sequences.
Duck-typing lets you treat lots of types of things
polymorphically, but it breaks the partitioning by
kind that flatten() requires.

Fortunately there's no real need for a general flatten().


-- 
--Bryan


From b.maryniuck at gmail.com  Sat Sep 30 10:24:20 2006
From: b.maryniuck at gmail.com (BM)
Date: 30 Sep 2006 07:24:20 -0700
Subject: cx_Freeze and Python
Message-ID: <1159626259.961193.113930@m7g2000cwm.googlegroups.com>

Hi.
Does somebody used cx_Freeze, especially on Mac? I have a trouble to
make *standalone* program. If I use dynamically compiled Python as it
done by default, I always have an "hardcoded" URL inside the Python
binary something like /usr/local/Python2.5/lib/libpython.... so after I
freeze stuff and put to another machine, it fails with exactly the
error: Library /usr/local/Python2.5/blah-blah/... is missing. Means,
not a standalone App so far.

Then I tried to build Python statically. I success editing
Modules/Setup and I got fat binary with no such a path inside the VM.
However, when I try to Freeze, it barks with the following:

Traceback (most recent call last):
  File "/Users/bm/cx_Freeze-3.0.3/initscripts/ConsoleKeepPath.py", line
15, in <module>
    exec code in m.__dict__
  File "FreezePython.py", line 7, in <module>
    import Freezer
  File "Freezer.py", line 9, in <module>
    import zipfile
  File "/Users/bm/Python2.5-static/lib/python2.5/zipfile.py", line 5,
in <module>
    import binascii, cStringIO
ImportError:
dlopen(/Users/bm/Python2.5-static/lib/python2.5/lib-dynload/binascii.so,
2): Symbol not found: _PyModule_GetDict
  Referenced from:
/Users/bm/Python2.5-static/lib/python2.5/lib-dynload/binascii.so
  Expected in: dynamic lookup

Well, traceback usually differs - depends of what module it wants to
load. If you make it ./configure --disable-shared, then it fails
loading _struct.so or similar. What I am missing in the very principle?

Thanks for any advice.



From MonkeeSage at gmail.com  Fri Sep 15 05:48:56 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 15 Sep 2006 02:48:56 -0700
Subject: add without carry
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
Message-ID: <1158313736.490772.58350@m73g2000cwd.googlegroups.com>

Hugh wrote:
> Sorry, here's an example...
>
> 5+7=12
>
> added without carrying, 5+7=2
>
> i.e the result is always less than 10

def add(a, b, c=10):
  an = a + b
  if an >= c:
    an -= c
  return an

add(5, 7) # = 2

?

Regards,
Jordan



From ptmcg at austin.rr._bogus_.com  Wed Sep 27 09:37:40 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Wed, 27 Sep 2006 13:37:40 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <E8vSg.384$5o5.203@tornado.texas.rr.com>

"Antoon Pardon" <apardon at forel.vub.ac.be> wrote in message 
news:slrnehkqqc.rcu.apardon at rcpc42.vub.ac.be...
> On 2006-09-27, Peter Otten <__peter__ at web.de> wrote:
>> Antoon Pardon wrote:
>>
>>> I had written my own module, which works similarly but
>>> is somewhat extended. Here is an example of how it can
>>> be used and how I would like to use it but get stuck.
>>>
>>> from extreme import Top
>>>>>> Top
>>> Top
>>>>>> Top + 1
>>> Top
>>>>>> Top - 30
>>> Top
>>>>>> Top > 1e99
>>> True
>>>>>> lst = range(10)
>>>>>> lst[:Top]
>>> Traceback (most recent call last):
>>>   File "<stdin>", line 1, in ?
>>> TypeError: slice indices must be integers or None
>>>

Here's a little more refined version of my previous post:

class StubbornInt(int):
    def invariantOp(self,other):
        return self
    __add__ = invariantOp
    __sub__ = invariantOp
    __mul__ = invariantOp
    __div__ = invariantOp
    __iadd__ = invariantOp
    __isub__ = invariantOp
    __imul__ = invariantOp
    __idiv__ = invariantOp
    __radd__ = invariantOp
    __rsub__ = invariantOp
    __rmul__ = invariantOp
    __rdiv__ = invariantOp
    def __str__(self):
        return self.name

import sys
Top = StubbornInt(sys.maxint)
Top.name = "Top"
Bottom = StubbornInt(-sys.maxint-1)
Bottom.name = "Bottom"

print Top
print int(Top)
print int(Top-1e9)
print Bottom
print Bottom+sys.maxint
print int(Bottom+sys.maxint)

a = range(10)
print a[:Top]
print a[Top:]
print a[3:Top]
print 3+Top
print Top+3
print 5+2/6*Top
print a[Bottom:3]

for i in xrange(Top):
    print i
    if i > 10: break


prints:

Top
2147483647
2147483647
Bottom
Bottom
-2147483648
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
[]
[3, 4, 5, 6, 7, 8, 9]
Top
Top
Top
0
1
2
3
4
5
6
7
8
9
10
11
[0, 1, 2] 




From __peter__ at web.de  Sat Sep  9 05:26:18 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 09 Sep 2006 11:26:18 +0200
Subject: ubuntu crash
References: <mailman.198.1157769400.5279.python-list@python.org>
	<1157775509.488970.154300@e3g2000cwe.googlegroups.com>
Message-ID: <edu19t$c3g$02$1@news.t-online.com>

Jay wrote:

> Here are some commands to try:
> 
> apt-get install ubuntu-standard
> apt-get install ubuntu-desktop
> 
> Also, I'd recommend trying Ubuntu's official forums website.  I've
> found their community to be extremely helpful.
> 
> http://www.ubuntuforums.org/
> 
> Plus, why on earth would you want to ax Python?

Because you trust the experts on c.l.py?

http://mail.python.org/pipermail/python-list/2006-September/360376.html

Peter


From Frankdrack at yahoo.com  Wed Sep 20 19:24:01 2006
From: Frankdrack at yahoo.com (Frank Drackman)
Date: Wed, 20 Sep 2006 16:24:01 -0700
Subject: Need some help here
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <kaqdnedy87hDUIzYnZ2dnUVZ_umdnZ2d@comcast.com>


"Kareem840" <KareemOfweet840 at hotmail.com> wrote in message 
news:1158790201.887958.84700 at k70g2000cwa.googlegroups.com...
> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.
>

Sell your sperm, we don't want you to reproduce. 




From MonkeeSage at gmail.com  Sat Sep 23 16:13:13 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 13:13:13 -0700
Subject: Need compile python code
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
	<1159039498.616908.88550@d34g2000cwd.googlegroups.com>
Message-ID: <1159042393.683184.111680@h48g2000cwc.googlegroups.com>

mistral wrote:
> No, something is wrong there. what I need is just compile one python
> file which will generate html page, with parameters:
> "exec" "python" "-O" "$0" "$@"
>
>  just need simple way do this(script is correct), i will not set any
> patches anywhere, can i do this wrom normal GUI?

Hmmm... Are you talking about _RUNNING_ python scripts? Is that what
you mean by "compile" -- you mean execute? Is that what this broken
shell script means?

"exec" "python" "-O" "$0" "$@"

You don't need exec, the double quote on every word breaks it, and
passing $0 (which is the shell script itself) to python is sure to
break. Try this:

#!/bin/sh
python -O "$@"

Then:

$ run_python.sh file.py arg1 arg2 arg3

Regards,
Jordan



From nicogrubert at gmail.com  Tue Sep 19 08:17:26 2006
From: nicogrubert at gmail.com (Nico Grubert)
Date: Tue, 19 Sep 2006 14:17:26 +0200
Subject: Installing Python on a 64-Bit OS
Message-ID: <450FDFD6.5050601@gmail.com>

Hi there,

I'd like to install Python 2.3.5. on a 64-Bit OS (Suse Linux Enterprise 
Server 10) on an AMD Opteron 64-Bit machine.
I have to use Python 2.3.5.

Do I need a special source archive or can I use "Python-2.3.5.tgz" from 
http://www.python.org/ftp/python/2.3.5/Python-2.3.5.tgz ?

Is there anything special I have to care about or is installing Python 
on a 64 Bit OS just as easy as installing it on a 32-Bit OS?

Regards,
Nico


From paul at boddie.org.uk  Wed Sep 27 08:43:17 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 27 Sep 2006 05:43:17 -0700
Subject: baffling sql string
References: <451a6cc4@127.0.0.1>
Message-ID: <1159360996.953978.132870@i3g2000cwc.googlegroups.com>

DarkBlue wrote:
>
> Example: mysubject="Let's Eat"  this fails
>          mysubject="Lets Eat"   this works fine
>
> What options do I have to avoid this issue but still
> can use apostrophes in my input data ?

Use proper "bind parameters" or "bind variables" when executing the
statement, rather than using string substitution/interpolation.

[...]

> iq1="update MSGTALK set msgdate='NOW',subject='%s',talktext='%s' where
> msgno= %d " % (mysubject,mytalktext,mymsgno)

This merely "edits" a statement, stuffing values directly into the
text. As you've noticed, merely substituting values for placeholders
isn't always going to work. Moreover, it's something that could cause
errors (in the nicest circumstances such as in a local application) or
security holes (in nasty circumstances such as in networked or Web
applications).

Instead try this:

iq1="update MSGTALK set msgdate='NOW',subject=%s,talktext=%s" \
  " where msgno=%d" # note that the parameters are not substituted here

Then execute the statement with the parameters as a separate argument:

self.cur.execute(iq1, [mysubject,mytalktext,mymsgno])

The database module will then ensure that the values you've supplied
really will get used properly when executing the statement, and things
like apostrophes won't cause any problems at all.

Paul

P.S. The above assumes that the "parameter style" of the database
module is "format", as found by looking at the paramstyle attribute of
the module (eg. MySQLdb.paramstyle). Other styles include "qmark" where
you use "?" instead of "%s" (or other format codes) to indicate where
your values will be used in a statement.

P.P.S. See also the DB-API 2.0 specification:
http://www.python.org/dev/peps/pep-0249/



From tim.golden at viacom-outdoor.co.uk  Wed Sep 13 09:29:09 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 13 Sep 2006 14:29:09 +0100
Subject: os.access(file, os.R_OK) on UNIX and WINDOWS
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B447@vogbs009.gb.vo.local>

[kai rosenthal]

| on UNIX I changed the permission of a file "myfile" with chmod 000
| myfile. Then I got 0 from os.access(myfile, os.R_OK). This is ok.
| 
| Then I checked the same file on WINDOWS (with samba):
| I got "True" from os.access(myfile, os.R_OK). I think it is not ok?!

Ummm. This is a touch similar to a parallel thread about
os.X_OK on Win32. At the risk of being grilled by better-informed
types, the fact is that while the Win32 CRT (used for non-Unicode
operations by the Python os module) does expose chmod and
access functions, they don't seem guaranteed to do more than overlap
more-or-less with the corresponding Unix functions.

From what appears to be the MSDN page for chmod [1]:
"""
The permission setting controls read and write access to the file. 
The integer expression pmode contains one or both of the following 
manifest constants, defined in SYS\STAT.H:

_S_IWRITE - Writing permitted
_S_IREAD - Reading permitted
_S_IREAD | _S_IWRITE - Reading and writing permitted

Any other values for pmode are ignored. 
"""

Note that last sentence: I take this to mean that passing
zero to mean "can't read or write" is having no effect.

The latest Python source source [2] uses the Win32 API
SetFileAttributesW [3] where a Unicode filename is passed, 
but this doesn't seem to allow for a neither-read-nor-write
situation either.

| In my python script I check the return value of os.access(myfile,
| os.R_OK) and when it is "True" I copy the file with 
| shutil.copy(myfile, newfile).
| But on WINDOWS I get the error: IOError: [Errno 13] Permission denied.

I suspect you're going to have to put the copy in a
try... except block, which is not bad advice in any
case. If you check access and then copy, you're at
the mercy of a change to the file's permissions (or
even existence) between the calls, so you'd have to
cope with a potential exception in any case. Better
perhaps to do it that way in the first place. This
point of view is supported by, among others, GvR
in a thread on python-dev. [4]

[1]
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore9
8/html/_crt__chmod.2c_._wchmod.asp[2]
http://svn.python.org/view/python/trunk/Modules/posixmodule.c?rev=51762&
view=auto
[3]
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/
fs/setfileattributes.asp
[4]
http://mail.python.org/pipermail/python-dev/2004-November/049931.html

In short, do something like this:

<code>
try:
  shutil.copy (myfile, newfile)
except IOError:
  print "Couldn't copy; do useful things or ignore"
else:
  print "Copied ok"
</code>

TJG

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From jon+usenet at unequivocal.co.uk  Tue Sep 26 12:40:02 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 16:40:02 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
	<mailman.708.1159287078.10491.python-list@python.org>
Message-ID: <slrnehilui.evq.jon+usenet@snowy.squish.net>

In article <mailman.708.1159287078.10491.python-list at python.org>, Brian Quinlan wrote:
> Well, there are dozens (hundreds?) of templating systems for Python. 

I know, I wrote one of them ;-)

> t = Template("test.html")
> t['foo'] = 'Brian -> "Hi!"'
> assert str(t) == '<p>Brian -&gt; "Hi"</p>'
> 
> So how would you test our template system?

What I don't get is why you are testing the above code like that at
all. Surely if the template system somehow became so broken that it
couldn't even do trivial replacements, you would notice immediately
as all your web pages would go totally wrong.

> Maybe, which is why I'm asking you how you do it. Some of our web 
> applications contain 100s of script generated pages. Testing each one by 
> hand after making a change would be completely impossible. So we use 
> HTTP scripting for testing purposes i.e. send this request, grab the 
> results, verify that the test in the element with id="username" equals 
> "Brian Quinlan", etc. The test also validates that each page is well 
> formed. We also view each page at some point but not every time a 
> developer makes a change that might (i.e. everything) affect the entire 
> system.

Ah, ok, that sounds more sensible. But something as specialised and
complicated as that can surely cope with un-encoding HTML entities?

Incidentally, the company I work for, www.sitemorse.com, does
automated web site testing - and it's all done in Python! :-)


From apardon at forel.vub.ac.be  Thu Sep  7 04:02:57 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 7 Sep 2006 08:02:57 GMT
Subject: threading support in python
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
	<7xr6ypjr0r.fsf@ruckus.brouhaha.com>
	<1157566938.399058.242620@e3g2000cwe.googlegroups.com>
Message-ID: <slrnefvkhh.vt7.apardon@rcpc42.vub.ac.be>

On 2006-09-06, sjdevnull at yahoo.com <sjdevnull at yahoo.com> wrote:
> Paul Rubin wrote:
>> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
>> > (1) I think is here to stay, if you're going to tell programmers that
>> > their destructors can't make program-visible changes (e.g. closing the
>> > database connection when a dbconn is destroyed), that's a _huge_ change
>> > from current practice that needs serious debate.
>>
>> We had that debate already (PEP 343).  Yes, there is some sloppy
>> current practice by CPython users that relies on the GC to close the
>> db conn.
>
> This point is unrelated to with or ref-counting.  Even the standard
> library will close file objects when they are GC'd.

This is not totally true. My experience is that if you use the
tarfile module any tarfile that was opened for appending or
writing risks being corrupted if it isn't closed explicedly.

-- 
Antoon Pardon


From sandravandale at yahoo.com  Mon Sep  4 22:19:24 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 4 Sep 2006 19:19:24 -0700
Subject: threading support in python
In-Reply-To: <1157398593.191972.240270@p79g2000cwp.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
Message-ID: <1157422764.573537.116340@m79g2000cwm.googlegroups.com>

> You seem to be confused about the nature of multiple-process
> programming.
>
> If you're on a modern Unix/Linux platform and you have static read-only
> data, you can just read it in before forking and it'll be shared
> between the processes..

Not familiar with *nix programming, but I'll take your word on it.

> If it's read/write data or you're not on a Unix platform, you can use
> shared memory to shared it between many processes.

I know how shared memory works, it's the last resort in my opinion.

> Threads are way overused in modern multiexecution programming.  The

<snip>

> It used to run on windows with multiple processes.  If it really won't
> now, use an older version or contribute a fix.

First of all I'm not in control of spawning processes or threads.
Apache does that, and apache has no MPM for windows that uses more than
1 process. Secondly "Superior" is definately a matter of opinion. Let's
see how you would define superior.

1) Port (a nicer word for rewrite) the worker MPM from *nix to Windows.
2) Alternately switch to running Linux servers (which have their
plusses) but about which I know nothing. I've been using Windows since
I was 10 years old, I'm confident in my ability to build, secure, and
maintain a Windows server. I don't think anyone would recommend me to
run Linux servers with very little in the way of Linux experience.
3) Rewrite my codebase to use some form of shared memory. This would be
a terrible nightmare that would take at least a month of development
time and a lot of heavy rewriting. It would be very difficult, but I'll
grant that it may work if done properly with only small performance
losses. Sounds like a deal.

I would find an easier time, I think, porting mod_python to .net and
leaving that GIL behind forever. Thankfully, I'm not considering such
drastic measures - yet.

Why on earth would I want to do all of that work? Just because you want
to keep this evil thing called a GIL? My suggestion is in python 3
ditch the ref counting, use a real garbage collector, and make that GIL
walk the plank. I have my doubts that it would happen, but that's fine,
the future of python is in things like IronPython and PyPy. CPython's
days are numbered. If there was a mod_dotnet I wouldn't be using
CPython anymore.

> Now, the GIL is independent of this; if you really need threading in
> your situation (you share almost everything and have hugely complex
> data structures that are difficult to maintain in shm) then you're
> still going to run into GIL serialization.  If you're doing a lot of
> work in native code extensions this may not actually be a big
> performance hit, if not it can be pretty bad.

Actually, I'm not sure I understand you correctly. You're saying that
in an environment like apache (with 250 threads or so) and my hugely
complex shared data structures, that the GIL is going to cause a huge
performance hit? So even if I do manage to find my way around in the
Linux world, and I upgrade my memory, I'm still going to be paying for
that darned GIL?

Will the madness never end?
-Sandra



From jaysherby at gmail.com  Sat Sep  9 11:25:38 2006
From: jaysherby at gmail.com (Jay)
Date: 9 Sep 2006 08:25:38 -0700
Subject: ubuntu crash
In-Reply-To: <edu19t$c3g$02$1@news.t-online.com>
References: <mailman.198.1157769400.5279.python-list@python.org>
	<1157775509.488970.154300@e3g2000cwe.googlegroups.com>
	<edu19t$c3g$02$1@news.t-online.com>
Message-ID: <1157815538.350772.189140@e3g2000cwe.googlegroups.com>

Oh......  Sorry about that, then.

Did my suggestions work at all?


Peter Otten wrote:
> Jay wrote:
>
> > Here are some commands to try:
> >
> > apt-get install ubuntu-standard
> > apt-get install ubuntu-desktop
> >
> > Also, I'd recommend trying Ubuntu's official forums website.  I've
> > found their community to be extremely helpful.
> >
> > http://www.ubuntuforums.org/
> >
> > Plus, why on earth would you want to ax Python?
>
> Because you trust the experts on c.l.py?
>
> http://mail.python.org/pipermail/python-list/2006-September/360376.html
> 
> Peter



From damian at nice.co.nz  Thu Sep 28 01:47:00 2006
From: damian at nice.co.nz (Damian)
Date: 27 Sep 2006 22:47:00 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159404746.185590.40560@e3g2000cwe.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
	<1159400418.491887.125240@m7g2000cwm.googlegroups.com>
	<1159404746.185590.40560@e3g2000cwe.googlegroups.com>
Message-ID: <1159422420.309841.140260@m73g2000cwd.googlegroups.com>

Ross Ridge wrote:
> Hmm... it seems that you don't have MSXML 4.0 installed on your
> machine.  I missed the fact that you're using ASP.NET, so your ASP code
> probably is probably using the .NET XML implementation instead of
> MSXML.  In that case, another alternative might be to use IronPython
> and just translate your ASP script into Python.

Sorted!

I installed msxml4 and then struggled for an hour or so with an
encoding error (UnicodeEncodeError: 'ascii' codec.... etc) which was
fixed by altering your code from:

return proc.output --> return proc.output.encode('utf-8')

The performance of MSXML over 4suite is substantial.
4suite: http://python.pointy.co.nz/test = 2.5s
MSXML: http://python.pointy.co.nz/test_msxml = 1.1s

I'd like to eventually break all ties with MS at some stage. It'll be
interesting to test this performance on a Linux server.

Thank you for your help.

Damian



From zeng at adobe.com  Wed Sep 20 20:47:23 2006
From: zeng at adobe.com (Ted Zeng)
Date: Wed, 20 Sep 2006 17:47:23 -0700
Subject: access to xml_rpc server problem
In-Reply-To: <7.0.1.0.0.20060920213710.05866098@yahoo.com.ar>
Message-ID: <454FD769B559DD4BAC93B2CCA7BEBDBE0121CDA5@namail2.corp.adobe.com>

Good question. I will check this out.

When I run the server on a machine with static IP,
I need to run the server with

SimpleXMLRPCServer.SimpleXMLRPCServer(("machine_domain.mycompany.com",
8000))
server.serve_forever()

then client can access the server with
server = xmlrpclib.Server('http:// machine_domain.mycompany.com:8000')

If the server uses "localhost" such as the following instead, then the
client still could not access the server:

SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost", 8000))
server.serve_forever()


ted

-----Original Message-----
From: Gabriel Genellina [mailto:gagsl-py at yahoo.com.ar] 
Sent: Wednesday, September 20, 2006 5:38 PM
To: Ted Zeng
Cc: Eric Smith; python-list at python.org
Subject: Re: access to xml_rpc server problem

At Wednesday 20/9/2006 21:30, Ted Zeng wrote:

>But if I use server's ip address instead of localhost in the client,
>then it could not access the server.

Maybe you have a firewall blocking access?



Gabriel Genellina
Softlab SRL 




From belred at gmail.com  Sun Sep 10 14:14:06 2006
From: belred at gmail.com (Bryan)
Date: Sun, 10 Sep 2006 11:14:06 -0700
Subject: downloading eggs
Message-ID: <ee1kle$qlu$1@sea.gmane.org>

i'm trying to just download the turbogears eggs without installing it.  i've 
read the turbogear install instructions and the easy_install help.


from the easy_install web site:

If you have another machine of the same operating system and library versions 
(or if the packages aren't platform-specific), you can create the directory of 
eggs using a command like this:

easy_install -zmaxd somedir SomePackage



i tried this:


C:\python\turbogears>easy_install -zmaxd TurboGears TurboGears
Processing TurboGears
error: Couldn't find a setup script in TurboGears


C:\python\turbogears>easy_install -zmaxd . TurboGears
Processing TurboGears
error: Couldn't find a setup script in TurboGears



on the turbogears mailing list, someone posted this:

You could even do "easy_install -zmaxd TurboGears" at home to just
download the files and then bring in the files on a usb key and then
"easy_install -f . TurboGears" from the usb drive.


i tried this:

C:\python\turbogears>easy_install -zmaxd TurboGears
error: No urls, filenames, or requirements specified (see --help)


i copied the ez_setup.py file from turbogears and tried the commands against 
that script but it didn't work.  i'm using setuptools-0.6c2 if that is helpful 
to anyone.


thanks,

bryan





From roy at panix.com  Wed Sep 27 20:51:49 2006
From: roy at panix.com (Roy Smith)
Date: Wed, 27 Sep 2006 20:51:49 -0400
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
	<mailman.845.1159401951.10491.python-list@python.org>
Message-ID: <roy-491DC0.20514927092006@reader2.panix.com>

In article <mailman.845.1159401951.10491.python-list at python.org>,
 "Carl J. Van Arsdall" <cvanarsdall at mvista.com> wrote:

> > Things like decorators and metaclasses certainly add power, but they add 
> > complexity too.  It's no longer a simple language.
> >   
> Well, I think a simple language is a language that makes the simple 
> things simple and some of the complex things simple.  But I also like a 
> language where, if I need it, I can tap into some raw power and do that 
> really wild stuff.  So its simple to use if that's all you need yet 
> offers the complexity to get things done that a purely "simple" language 
> can't do.  I'd say its as simple as you want it to be :)

The problem is, if the complex features are there, people will use them.  
On any large project, there will always be some people who revel in using 
every obscure feature of a language.  That forces everybody else on the 
team (and all future members of the team) to know (or learn) those features 
in order to be able to use and maintain the code base.


From deets at nospam.web.de  Fri Sep  8 14:42:58 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 08 Sep 2006 20:42:58 +0200
Subject: cx_Oracle question
In-Reply-To: <4mdrgoF5e5umU1@uni-berlin.de>
References: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>
	<4mdrgoF5e5umU1@uni-berlin.de>
Message-ID: <4mdrtiF5nl11U1@uni-berlin.de>

> cursor.execute("""select mean_eng_txt from mean
>                   where mean_id=:arg_1""",{"arg_1"=arg_1})

Needs quotes of course.

Diez


From bj_666 at gmx.net  Fri Sep 29 04:11:34 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 29 Sep 2006 10:11:34 +0200
Subject: How to find number of characters in a unicode string?
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
	<pan.2006.09.18.20.29.20.510034@gmx.net>
	<efija1$357$1@lust.ihug.co.nz>
Message-ID: <pan.2006.09.29.08.11.32.939971@gmx.net>

In <efija1$357$1 at lust.ihug.co.nz>, Lawrence D'Oliveiro wrote:

> In message <pan.2006.09.18.20.29.20.510034 at gmx.net>, Marc 'BlackJack'
> Rintsch wrote:
> 
>> In <20060918221814.08625ea2.randhol+valid_for_reply_from_news at pvv.org>,
>> Preben Randhol wrote:
>> 
>>> Is there a way to calculate in characters
>>> and not in bytes to represent the characters.
>> 
>> Decode the byte string and use `len()` on the unicode string.
> 
> Hmmm, for some reason
> 
>     len(u"C\u0327")
> 
> returns 2.

Okay, decode and normalize and then use `len()` on the unicode string.

Ciao,
	Marc 'BlackJack' Rintsch



From jon+usenet at unequivocal.co.uk  Tue Sep 26 10:21:40 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 14:21:40 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
Message-ID: <slrnehidr6.9o0.jon+usenet@snowy.squish.net>

In article <mailman.687.1159280315.10491.python-list at python.org>, Fredrik Lundh wrote:
>> What do XML Information Sets have to do with escaping control
>> characters in HTML?
> 
> figure out the connection, and you'll have the answer to your "substantial
> point".

If you don't know the answer, you can say so y'know. There's no shame
in it.


From http  Fri Sep 29 09:26:12 2006
From: http (Paul Rubin)
Date: 29 Sep 2006 06:26:12 -0700
Subject: Making sure script only runs once instance at a time.
References: <mailman.801.1159372327.10491.python-list@python.org>
	<1159531181.314800.224180@k70g2000cwa.googlegroups.com>
	<mailman.936.1159535264.10491.python-list@python.org>
Message-ID: <7xk63mpzwr.fsf@ruckus.brouhaha.com>

Hari Sekhon <hpsekhon at googlemail.com> writes:
> Seeing as there doesn't seem to be a good answer to this (or at least
> not one that we have so far some up with) I have decided to fall back
> to my old friend the unix shell. It's as portable as python, but is
> very flexible and fast at doing real things and will tell me if
> another process by this name is running. If so, print msg and
> exit. simple.

Huh?  The obvious way to check for another instance is with a lock
file.  Just open the file and use fcntl to set an exclusive lock.  If
the lock acquisition fails, another instance has the file.


From simon at brunningonline.net  Thu Sep 21 05:36:34 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Thu, 21 Sep 2006 10:36:34 +0100
Subject: Python and CORBA
In-Reply-To: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
References: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
Message-ID: <8c7f10c60609210236g61db88c5k36853939266ea821@mail.gmail.com>

On 21 Sep 2006 01:48:55 -0700, rodmc <userprogoogle-139 at yahoo.co.uk> wrote:
> Can anyone recommend an easy to install COBRA implementation which
> works with Python? I am using Windows XP.

<http://omniorb.sourceforge.net/> is the 2nd hit if you go to
<http://www.google.com/search?q=python+corba>. ;-)

-- 
Cheers,
Simon B,
simon at brunningonline.net


From MonkeeSage at gmail.com  Fri Sep 29 16:43:14 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 29 Sep 2006 13:43:14 -0700
Subject: storing variable names in a list before they are used?
References: <hQeTg.57$1n3.320@news.tufts.edu>
	<1159560481.618075.154920@c28g2000cwb.googlegroups.com>
Message-ID: <1159562594.847676.19920@i3g2000cwc.googlegroups.com>

John Salerno wrote:
> If I want to have a list like this:
>
> [(first_name, 'First Name:'), (last_name, 'Last Name:').....]

Do you need the data to be ordered? If not, just use a dictionary:

d = {'First Name:': '', 'Last Name:': ''}
d['First Name:'] = 'Bob'
d['Last Name:']  = 'Smith'
print "Hi, I'm %s %s." % (d['First Name:'], d['Last Name:'])

If so, check out the ordered dictionary module [1]:

from odict import OrderedDict as odict
od = odict([('First Name:', ''), ('Last Name:', '')])
od['First Name:'] = 'James'
od['Last Name:']  = 'Bond'
for k,v in od.items():
  print "%s => %s" % (k,v)

[1] http://www.voidspace.org.uk/python/odict.html

Regards,
Jordan



From martin at v.loewis.de  Wed Sep 27 12:54:32 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 27 Sep 2006 18:54:32 +0200
Subject: Why don't optional mutable objects show up in vars(func)?
In-Reply-To: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
References: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
Message-ID: <451aacc8$0$11944$9b622d9e@news.freenet.de>

dannycolligan at gmail.com schrieb:
> So I just got bitten by the "don't use a mutable object as an optional
> argument" gotcha.  I now realize that for this function:
> 
>>>> def func(x, y=[]):
> ...     y.append(x)
> ...     print y
> ...
> 
> y is initialized when the function is imported, not when the function
> is executed.  However, if this is the case, then why is y not showing
> up as an attribute of func?

Because it's not an attribute of the function object; it's a default
value of the function.

>>>> vars(func)
> {}
>>>> dir(func)
> ['__call__', '__class__', '__delattr__', '__dict__', '__doc__',
> '__get__', '__getattribute__', '__hash__', '__init__', '__module__',
> '__name__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',
> '__setattr__', '__str__', 'func_closure', 'func_code', 'func_defaults',
> 'func_dict', 'func_doc', 'func_globals', 'func_name']
> 
> I'm using Python 2.4.3, if that is at all relevant.  Thanks in advance
> for any help.

Take a look at func_defaults.

Regards,
Martin


From sanxiyn at gmail.com  Tue Sep  5 22:59:14 2006
From: sanxiyn at gmail.com (sanxiyn at gmail.com)
Date: 5 Sep 2006 19:59:14 -0700
Subject: IronPython 1.0 released today!
In-Reply-To: <mailman.54.1157508321.5279.python-list@python.org>
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.52.1157504826.5279.python-list@python.org>
	<1157507696.434357.128090@m79g2000cwm.googlegroups.com>
	<mailman.54.1157508321.5279.python-list@python.org>
Message-ID: <1157511554.908258.316640@b28g2000cwb.googlegroups.com>

skip at pobox.com wrote:
>
> For those of us who have never used IronPython or Mono, is there a quick
> start document laying about somewhere?  It wasn't clear to me where to even
> look.  For example, is Mono == DotGnu?

I scribbled a rough howto. Hope it help.

Mono and DotGNU are two different projects, with similar goals.



From john106henry at hotmail.com  Wed Sep 13 16:56:57 2006
From: john106henry at hotmail.com (John Henry)
Date: 13 Sep 2006 13:56:57 -0700
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <12ggrh7cf893o25@corp.supernews.com>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
	<mailman.45.1158171218.10491.python-list@python.org>
	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>
	<12ggrh7cf893o25@corp.supernews.com>
Message-ID: <1158181017.611196.146440@e63g2000cwd.googlegroups.com>

Thanks for the reply, Grant.

I am not doing things like that - I am just trying to clear up in my
mind the Python concepts.

I understand it now.



Grant Edwards wrote:
> On 2006-09-13, John Henry <john106henry at hotmail.com> wrote:
> > Thanks for the reply, both to Laszlo and Steve.
> >
> > Okay, I understand what you're saying.
> >
> > But what if I need to make a "pointer" to a simple variable.
>
> There's no such thing as a "simple variable".  There are
> mutable objects and immutable objects.  Names are bound to
> objects.
>
>   x = 3
>
> The name "x" is bound to an immutable integer object who's
> value is 3.
>
> > For instance, in C:
> >
> >    int i=1
> >    int *j=&i
> >
> >    *j = 2
> >    print i
> >
> > and you get 2 printed.
> >
> > In Python,
> >
> >    i=1
>
> The name "i" is bound to an immutable integer object who's value is 1.
>
> >    j=i
>
> The name "j" is bound to an immutable integer object who's
> value is 1. That may or may not be the same object to which
> "i" is bound.
>
> >    j=2
>
> Now the name "j" is bound to an immutable integer object who's
> value is 2.  Rebinding the name "j" to a different object has
> no effect on the object to which "i" is bound.
>
> >    print i
> >
> > and you get 1 printed.
>
> Because you've changed neither the object to which "i" is bound
> nor the value of that object (you can't change the values of
> integer objects).
>
> > So, if I understand you correctly, I must make the reference
> > to a more elaborate representation.  Like:
> >
> >    i=[1,]
> >    j=i
> >    j[0]=2
> >    print i
> >
> > in order to get 2 printed.
> >
> > Correct?
>
> I suppose, for some values of "correct".  You've bound the
> names "i" and "j" to the same mutable object, then mutated that
> object.  Afterwards "i" and "i" still refer to that mutated
> object.
>
> That'll work as a rather clumsy imitation of the C code, but I
> don't really see what it is you're trying to accomplish. Trying
> to write C code using Python isn't going to be fun or productive[1].
>
> When using Python, you should write Python code. ;)
>
> If you'll explain the actual problem you're trying solve for
> which you think you need C-style "pointers", then somebody will
> be happy to show you how that problem is solved using Python.
>
> [1] There are people here who probably think it fun, but only
>     as a brain-teaser.
>
> --
> Grant Edwards                   grante             Yow!  After THIS, let's go
>                                   at               to PHILADELPHIA and have
>                                visi.com            TRIPLETS!!



From fdu.xiaojf at gmail.com  Thu Sep 28 03:10:39 2006
From: fdu.xiaojf at gmail.com (fdu.xiaojf at gmail.com)
Date: Thu, 28 Sep 2006 15:10:39 +0800
Subject: Can string formatting be used to convert an integer to its binary
	form ?
Message-ID: <451B756F.9010906@gmail.com>

Hi,

String formatting can be used to converting an integer to its octal or 
hexadecimal form:
 >>> a = 199
 >>> "%o" % a
'307'
 >>> "%x" % a
'c7'

But, can string formatting be used to convert an integer to its binary 
form ?


Thanks in advance.

xiaojf


From outstretchedarm at hotmail.com  Thu Sep  7 11:57:02 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 08:57:02 -0700
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <45003CCC.4050804@websafe.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
	<1157642876.793030.134030@p79g2000cwp.googlegroups.com>
	<45003CCC.4050804@websafe.com>
Message-ID: <1157644621.982238.11580@e3g2000cwe.googlegroups.com>

sure...

>>> print "hello world"
hello world
>>> t=raw_input('Hit return to continue')

I'm saving it as "helloworld11", then double clicking the icon I saved
it as.



From bolderaft at gmail.com  Sat Sep 30 12:41:34 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 30 Sep 2006 09:41:34 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159380986.289804.185550@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
	<1159278999.374338.76170@m73g2000cwd.googlegroups.com>
	<1159280328.671934.42180@h48g2000cwc.googlegroups.com>
	<1159285305.562672.152460@d34g2000cwd.googlegroups.com>
	<1159380986.289804.185550@b28g2000cwb.googlegroups.com>
Message-ID: <1159634494.409460.278990@i42g2000cwa.googlegroups.com>

I'll attest that we have a shortage of Python developers in the Dallas
area; in the DFW Python user group (dfwpython.org) we occasionally
encounter local employers who have trouble finding local Python
developers who can take on new work. Most of the group members are
already employed, so the standard answer to the employer is to
recommend hiring experienced developers and train them in Python.
Unfortunately we've seen a few cases where the employer decided to
choose a different technology due to the lack of available Python
talent.  Hopefully this will abate as more programmers understand this
problem and become attracted to Python.

BTW, are some Python-specific job sites:

http://www.python.org/community/jobs/

http://blog.gmane.org/gmane.comp.python.jobs

http://python.jobmart.com/



From bignose+hates-spam at benfinney.id.au  Fri Sep 22 20:26:04 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 23 Sep 2006 10:26:04 +1000
Subject: Don't use regular expressions to "validate" email addresses
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au> <eevo5f$abu$1@sea.gmane.org>
	<mailman.442.1158902652.10491.python-list@python.org>
	<1158916433.621758.21640@m73g2000cwd.googlegroups.com>
	<874pv0z0cp.fsf@benfinney.id.au> <ef0kom$upr$1@sea.gmane.org>
Message-ID: <87r6y3xwbn.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> Ben Finney wrote:
> > I don't "validate" email addresses by regular expression.
> > 
> Just as a matter of interest, are you expecting that you'll find out
> about the undeliverable ones? Because in many cases nowadays you
> wont, since so many domains are filtering out "undeliverable mail"
> messages as an anti-spam defence.

I wouldn't expect a program to treat a user-supplied email address as
known-good until receiving a confirmation email with a cookie, or some
out-of-band confirmation (e.g., the email addresses are seeded by some
trusted source).

Until then, it's an untrusted piece of user-supplied data, to be kept
around for a limited time pending confirmation, and then discarded.

-- 
 \       "Man cannot be uplifted; he must be seduced into virtue."  -- |
  `\                                       Donald Robert Perry Marquis |
_o__)                                                                  |
Ben Finney



From paddy3118 at netscape.net  Mon Sep 18 01:43:08 2006
From: paddy3118 at netscape.net (Paddy)
Date: 17 Sep 2006 22:43:08 -0700
Subject: tcl list to python list?
In-Reply-To: <tZnPg.4850$vD2.292@tornado.texas.rr.com>
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
	<gv51u3-4j4.ln1@lairds.us>
	<tZnPg.4850$vD2.292@tornado.texas.rr.com>
Message-ID: <1158558188.805775.66800@i3g2000cwc.googlegroups.com>


Paul McGuire wrote:
> "Cameron Laird" <claird at lairds.us> wrote in message
> news:gv51u3-4j4.ln1 at lairds.us...
> > In article <1158459542.693284.98090 at h48g2000cwc.googlegroups.com>,
> > <jerry.levan at gmail.com> wrote:
> >>Hi,
> >>
> >>I have a file that contains a "tcl" list stored as a string.  The list
> >>members are
> >>sql commands ex:
> >> { begin { select * from foo
> >>                where baz='whatever'}
> >>  {select * from gooble } end
> >>  { insert into bar values('Tom', 25) } }
> >>
> >>I would like to parse the tcl list into a python list...
> >>
> >>Any suggestions ( I am running Tkinter...)
> > .
> > .
> > .
> > No correct solution's going to be as elegant as I suspect you imagine.
> > Here's an example of what's required:
> >
> >  # If you try anything you suspect is simpler, you're going to have to
> >  # teach Python about Tcl treatment of whitespace, or teach Tcl how
> >  # Python quotes, or ...
> >
> >  import Tkinter
> >  tcl_list = """{ begin { select * from foo
> >                  where baz='whatever'}
> >    {select * from gooble } end
> >    { insert into bar values('Tom', 25) } }"""
> >
> >      # Collect the Python list here.
> >  result = []
> >      # Create a single Tcl interpretive context for all the work.
> >  tk_instance = Tkinter.Tk().tk.eval
> >      # Everything Tcl returns is a string; make this value an integer.
> >  tcl_list_length = int(tk_instance(
> >             "set tcl_list %s; llength $tcl_list" % tcl_list))
> >
> >      # With all the set-up done, simply loop over the elements.
> >  for counter in range(tcl_list_length):
> >          # Ask Tcl for each successive list item.
> >      result.append(tk_instance("lindex $tcl_list %d" % counter))
> >
> >  print result
> >
> > The output is
> >  ['begin', " select * from foo\n                where baz='whatever'",
> > 'select * from gooble ', 'end', " insert into bar values('Tom', 25) "]
>
> Elegant-shmelegant, looks like it gets the job done, and neatly too.  I had
> no idea that you can invoke Tcl so easily from Python.
>
> Why is your indentation so weird though?  The comments actually make your
> solution harder to read.  If I may be so forward as to edit for readability
> (I think a list comprehension to build the actual list is easier to follow
> than the for loop with the strangely-indented comments):
>
> # Create a single Tcl interpretive context for all the work.
> tk_instance = Tkinter.Tk().tk.eval
>
> # define list in Tcl context, and extract number of elements
> tk_instance("set tcl_list %s" % tcl_list)
> numItems = int(tk_instance("llength $tcl_list"))
>
> # build Python list indexing by each item
> result = [ tk_instance("lindex $tcl_list %d" % i)
>             for i in range(numItems)]
>
>
> -- Paul

Thanks, Cameron, Paul;
I'm still in the Electronics business, where TCL is everywhere. I too
did not know how easy it is to invoke TCL from inside Python. Yet more
ammunition in my quest to be allowed to write more Python at work.

- Cheers, Paddy.



From sjmachin at lexicon.net  Fri Sep  1 06:05:21 2006
From: sjmachin at lexicon.net (John Machin)
Date: 1 Sep 2006 03:05:21 -0700
Subject: Classes referencing each other
References: <mailman.10236.1157100375.27775.python-list@python.org>
Message-ID: <1157105121.594880.59530@m73g2000cwd.googlegroups.com>

Manuel Bleichner wrote:
> Hello list,
>
> I have searched for some time now, but no result...
> I'm having the following problem:
>
> In a module I have a huge number of classes of the form:
>
> class A(object):
>    connected_to = [B, C]
>    <other attributes...>
>
> class B(object)
>    connected_to = [C]
>    <other attributes...>
>
> class C(object)
>    connected_to = [A]
>    <other attributes...>
>
> As you see, classes A and B reference classes that
> are not yet defined when the class is being defined.
> It will raise a NameError: 'B'.
>
> I know i could solve this by leaving out the definition
> of 'connected_to' in A and attach it to the class later on by
> A.connected_to = [B, C]
> but I would like to avoid this, because in the module
> there are about 50 classes that have to be altered from time
> to time and it's just incredibly ugly if I have to look for
> the attribute definitions in more than one place.

So why can't you do it all in one place by
    A.connected_to = [B, C]
    B.connected_to = [C]
    C.connected_to = [A]
?

or by a tabular method:

connections = (
    (A, [B, C]),
    (B, [C]),
    (C, [A]),
    )
for cls_from, targets in connections:
    # maybe insert some checking code in here ...
    # is X.connected_to = [X] allowed?
    # is Y.connected_to = [] allowed?
    cls_from.connected_to = targets

>
> Also, I would like to avoid eval(), because the references
> have to be followed very often and that would cause more
> CPU load and make the program code uglier :)

Avoiding eval() does always seem to be a good thing :-)

BTW, care to tell us what the connections mean? Applications of
connected instances of the one class are of course very common, but 50
classes connected in a cyclic fashion is rather new to me ...

Cheers,
John



From smith.patrick__NOSPAM__ at gmail.com  Fri Sep 29 10:35:27 2006
From: smith.patrick__NOSPAM__ at gmail.com (Patrick Smith)
Date: Fri, 29 Sep 2006 10:35:27 -0400
Subject: wxPython and threading issue
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
	<1159519609.483029.162340@c28g2000cwb.googlegroups.com>
Message-ID: <VaaTg.90494$ED.66112@read2.cgocable.net>


"Nick Vatamaniuc" <vatamane at gmail.com> wrote in message
news:1159519609.483029.162340 at c28g2000cwb.googlegroups.com...
> If your thread is long running and it is not possible to easily set a
> flag for it to check and bail out, then how does it display the
> progress in the progress dialog. How often does that get updated? If
> the progress dialog is updated often, then at each update have the
> thread check a self.please_die flag, for example, and break out
> (possibly after releasing some resources...).
>
>
> Having the work done in an external process might or might not work
> easily for your problem. It will make it easy to kill the execution but
> it might be OS dependent, and you will have to define some
> communication interface between your processes (for example, how would
> an external process easily provide progress feedback to its parent?).
>
>

Hi,
The external process was their original approach, but when cancel was
pressed or the UI was closed they found the subprocess still around.  Also,
it must work on windows, linux, and mac.

thanks.




From claudio.grondi at freenet.de  Wed Sep 13 11:48:32 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Wed, 13 Sep 2006 17:48:32 +0200
Subject: Scientific computing and data visualization.
In-Reply-To: <7twt877vyg.fsf@kunz-pbdsl3.stanford.edu>
References: <mailman.85.1157564525.5279.python-list@python.org>
	<7twt877vyg.fsf@kunz-pbdsl3.stanford.edu>
Message-ID: <ee998d$c41$1@newsreader2.netcologne.de>

Paul F. Kunz wrote:
> "Fie Pye" <fiepye at atlas.cz> writes:
> 
> 
>>        Hallo
>>	
>>	I would like to have a high class open source tools for scientific computing and powerful 2D and 3D data visualisation. Therefore I chose python, numpy and scipy as a base. Now I am in search for a visualisation tool. I tried matplotlib and py_opendx with OpenDx. OpenDx seems to me very good but the project py_opendx looks like closed. After py_opendx instalation and subsequent testing I got an error that needs discussion with author or an experienced user. Unfortunately a mail to author returned as undeliverable.
>>	
>>	Does anybody now about suitable visualisation tool?
>>	
> 
> Have you looked at HippoDraw?
> 
> http://www.slac.stanford.edu/grk/ek/hippodraw
   http://www.slac.stanford.edu/grp/ek/hippodraw/

Claudio Grondi


From wahab at chemie.uni-halle.de  Thu Sep 28 17:08:26 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Thu, 28 Sep 2006 23:08:26 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <mailman.901.1159469166.10491.python-list@python.org>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<mailman.901.1159469166.10491.python-list@python.org>
Message-ID: <efhdt1$9a1$1@mlucom4.urz.uni-halle.de>

Thus spoke Frederic Rentsch (on 2006-09-28 20:43):
> bearophileHUGS at lycos.com wrote:
>> Mirco Wahab:
>>   
>>> But where is the %b in Python?
>>
>> Python doesn't have that. ...
>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440528
>   
> Good idea, but shorter with -> 
> http://cheeseshop.python.org/pypi/SE/2.2%20beta
> SE.SE ('se_definition_files/int_to_binary.se') ('%X' % 987654321)
> '00111010110111100110100010110001'

I don't really understand here:

- why doesn't have Python such a simple and useful thing as to_binstr(...)
  even C++ has one built in,
    #include <iostream>
    #include <bitset>

    int somefunc()
   {
    int val = 199;
    std::cout << std::bitset<32>( val );
    ...

- why would you favor such complicated solutions
  for this (as posted), when you can have this
  in one line, e.g.:

  def int2bin(num, width=32):
    return ''.join(['%c'%(ord('0')+bool((1<<k)&num)) for k in range((width-1),-1,-1)])

  (including a string with specifier,this is what I came up with after
   looking up some Python docs - maybe you can straighten this a bit ...)

-- but my goggles might be biased,
I don't really emphasize the "Python way" ;-)

Regards and thanks

Mirco


From steve at REMOVE.THIS.cybersource.com.au  Wed Sep 27 10:20:11 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Thu, 28 Sep 2006 00:20:11 +1000
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159271339.775493.132180@i3g2000cwc.googlegroups.com>
	<mailman.669.1159272062.10491.python-list@python.org>
	<pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>
	<roy-E62177.09172727092006@reader2.panix.com>
Message-ID: <pan.2006.09.27.14.20.10.789105@REMOVE.THIS.cybersource.com.au>

On Wed, 27 Sep 2006 09:17:28 -0400, Roy Smith wrote:

> In article 
> <pan.2006.09.27.13.11.34.185704 at REMOVE.THIS.cybersource.com.au>,
>  Steven D'Aprano <steve at REMOVE.THIS.cybersource.com.au> wrote:
> 
>> On Tue, 26 Sep 2006 22:00:55 +1000, Anthony Baxter wrote:
>> 
>> > This seems to be a very, very silly original post. I know of plenty of
>> > people who make a living programming Python. It's been the vast
>> > majority of the programming (for money) I've done in the last ten
>> > years, and there's countless other people I know here in Melbourne in
>> > the same position.
>> 
>> Countless people? Are we talking aleph-zero people (countable infinity) or
>> one of the uncountable infinities?
> 
> Countless and uncountable are not the same thing.  The former simply means 
> you haven't bothered to count them yet, which as a basis for number theory, 
> sounds like it belongs in a Douglas Adams book.

You're thinking of "uncounted", which means "not counted yet". The
dictionary definition of countless is "too many to count" (Pocket Oxford),
which I suppose could be 11 for some people if they didn't take their
shoes and socks off. Mathematically, any finite integer is able to be
counted, so "countless" is equivalent to "infinite in number".

Of course, I suppose it is conceivable that there isn't actually an
infinite number of Python programmers living in Melbourne, and Anthony was
exaggerating just a tad. Maybe it's not actually infinite, just very, very
large. Graham's Number perhaps?

http://en.wikipedia.org/wiki/Graham's_number



-- 
Steven.



From gagsl-py at yahoo.com.ar  Mon Sep 25 23:15:34 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 00:15:34 -0300
Subject: How to run in background?
In-Reply-To: <1159185721.476762.222830@b28g2000cwb.googlegroups.com>
References: <1159185721.476762.222830@b28g2000cwb.googlegroups.com>
Message-ID: <7.0.1.0.0.20060925235112.040e60c8@yahoo.com.ar>

At Monday 25/9/2006 09:02, billie wrote:

>Hi all. I know that it's possible to automatically run a Python program
>in background by giving it the "pyw" extension.
>This is useful when I release a source ditribution of my program.
>How could it be possible to do the same thing with an .exe file
>compiled with py2exe extension? Do I have to write a batch script
>separately?

I don't remember the details, but in your setup.py replace: 
console=myscript.py to windows=myscript.py (or maybe 
noconsole=myscript.py? I dont remember, but look at the distutils docs)



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From http  Mon Sep 25 09:17:36 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 06:17:36 -0700
Subject: Job offer python programmer
References: <1159189896.956716.84320@k70g2000cwa.googlegroups.com>
Message-ID: <7xzmcokrv3.fsf@ruckus.brouhaha.com>

johannes at axandra.com writes:
> We're looking for a software developer Python/PHP/Ajax/MySQL for web
> applications (full time job). Maybe someone in this group might be
> interested in this job.
> Further information can be found here:
> About the job: http://www.Axandra.de/python

Well, that page is in German, so I'm guessing you want a German speaker?


From thomasbartkus at comcast.net  Tue Sep 26 23:06:56 2006
From: thomasbartkus at comcast.net (Thomas Bartkus)
Date: Tue, 26 Sep 2006 22:06:56 -0500
Subject: Survival of the fittest
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
Message-ID: <pan.2006.09.27.03.06.55.347276@comcast.net>

On Wed, 27 Sep 2006 01:51:43 +0200, baalbek wrote:

<snip>
> Now, six years later, I use Python for about 70-80% of all my work (the 
> remainder being Ruby and C/C++).
> 
> I'm now having the policy: "If it's doable in Python, I'll use Python".
<snip>

Okay.  How did your stated "policy" leave you still wasting 20-30% of your
programming efforts on other languages?

We would be curious to know about those things you can do in C++
but can't do in Python.
(Doubting) Thomas Bartkus




From mikael at isy.liu.se  Thu Sep 21 07:37:35 2006
From: mikael at isy.liu.se (Mikael Olofsson)
Date: Thu, 21 Sep 2006 13:37:35 +0200
Subject: Changing behaviour of namespaces
Message-ID: <4512797F.4080602@isy.liu.se>

Hi!

This is in Python 2.3.4 under WinXP.

I have a situation where I think changing the behaviour of a namespace 
would be very nice. The goal is to be able to run a python file from 
another in a separate namespace in such a way that a NameError is not 
raised if a non-existing variable is used in the file. The file that I 
want to run is taken out of context, and some needed variables may be 
missing that are normally there when used in the intended context. OK! 
When I run it out of context, I do not want the execution to stop 
half-way through the file based on NameErrors, instead a predefined 
dummy variable should be used. The question is: Can I achieve that?

Google didn't give me much, so I experimented a bit: First, I created a 
dummy object, which is meant to be used when a variable is missing:

    class dummyClass(object):
        pass
    dummyObject = dummyClass()

The actual dummy object is supposed to be a bit more complicated than 
that. The next step was to subclass dict:

    class forgivingDict(dict):
        def __init__(self,*args,**kwargs):
            dict.__init__(self,*args,**kwargs)
        def __getitem__(self,key):
            print '    Getting', key
            try:
                return dict.__getitem__(self,key)
            except KeyError:
                return dummyObject
        def __setitem__(self,key,value):
            print '    Setting', key, 'to', value
            dict.__setitem__(self,key,value)
        def __contains__(self,item):
            return True
        def __repr__(self):
            return 'forgivingDict(%s)' % (dict.__repr__(self),)

Then I tried to execute a file using a forgivingDict() as namespace:

    ns = forgivingDict()
    execfile(filePath, ns)

A file containing the following passes perfectly OK:

    a = 0
    b = a

But a file containing the following produces a NameError:

    b = a

The error traceback for the interested:

    Traceback (most recent call last):
      File "//charm/mikael/My 
Documents/Programmering/Python/Tester/voidTest.py", line 130, in ?
        execfile('test2.py', ns)
      File "test2.py", line 1, in ?
        b = a
    NameError: name 'a' is not defined

Now, that is exactly what is to expect if ns is a dict(), but I was 
hoping that b would have ended up as dummyObject when ns is a 
forgivingDict(). One thing: Nothing is printed out when execfile-ing the 
files, which means that the methods forgivingDict.__getitem__ and 
forgivingDict.__setitem__ are never used. My guess was that the 
execution done by execfile uses dict.__getitem__(ns, key) and 
dict.__setitem__(ns,key,value) instead of ns[key] and ns[key]=value when 
getting and setting variables. That is probably intentional from the 
developers and done that way for a good reason.

Alternative test: I've tried to replace __builtin__.dict with my 
forgivingDict, slightly modified to make sure that the inheritance still 
works, which didn't change anything. So it seams that the execution done 
by execfile does *not* use dict.__getitem__(ns, key) and 
dict.__setitem__(ns,key,value) after all, but something else. Probably 
the original dict is around somewhere else, and execfile uses the 
corresponding methods of that.

My approach seems flawed. Any ideas? Can I somehow execute a complete 
file even if there are non-existent variables used somewhere? A 
try-except around the execfile statement is not an alternative, since 
that stops the execution where the error occurs.

Should I perhaps read up on the compiler module? I mean: Using the 
compiler module to analyze the content of the file, and based on that 
updating my namespace before executing the file.

/MiO


From stefan.behnel-n05pAM at web.de  Wed Sep 27 12:21:18 2006
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Wed, 27 Sep 2006 18:21:18 +0200
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159350861.143291.10060@k70g2000cwa.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.640.1159254809.10491.python-list@python.org>
	<efcuf3$qht$2@lust.ihug.co.nz> <efd6n2$fbs$1@sea.gmane.org>
	<mailman.777.1159341826.10491.python-list@python.org>
	<efdego$o1c$3@lust.ihug.co.nz>
	<mailman.789.1159349254.10491.python-list@python.org>
	<1159350861.143291.10060@k70g2000cwa.googlegroups.com>
Message-ID: <451aa4fe$0$5142$9b4e6d93@newsspool1.arcor-online.net>

altemurbugra at gmail.com wrote:
> ok i close this discussion

No, you don't.

Stefan


From mpeters42 at gmail.com  Sat Sep 23 11:02:10 2006
From: mpeters42 at gmail.com (Mark Peters)
Date: 23 Sep 2006 08:02:10 -0700
Subject: Spliting a string on non alpha characters
In-Reply-To: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>
References: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>
Message-ID: <1159023730.073184.290130@k70g2000cwa.googlegroups.com>

> I'm relatively new to python but I already noticed that many lines of
> python code can be simplified to a oneliner by some clever coder. As
> the topics says, I'm trying to split lines like this :
>
> 'foo bar- blah/hm.lala' -> [foo, bar, blah, hm, lala]
>
> 'foo////bbbar.. xyz' -> [foo, bbbar, xyz]
>
> obviously a for loop catching just chars could do the trick, but I'm
> looking for a more elegant way. Anyone can help?

A simple regular expression would work:
>>> import re
>>> s = 'foo bar- blah/hm.lala'
>>> re.findall(r"\w+",s)
['foo', 'bar', 'blah', 'hm', 'lala']



From mike.klaas at gmail.com  Fri Sep 29 17:21:25 2006
From: mike.klaas at gmail.com (Klaas)
Date: 29 Sep 2006 14:21:25 -0700
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <1159554370.109208.301430@m7g2000cwm.googlegroups.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
	<1159515955.553244.74480@i3g2000cwc.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
Message-ID: <1159564885.504472.320530@h48g2000cwc.googlegroups.com>

Klaas wrote:

> else: does not trigger when there is no data on which to iterate, but
> when the loop terminated normally (ie., wasn't break-ed out).  It is
> meaningless without break.

Sorry, this was worded confusingly.  "else: triggers when the loop
terminates normally, not simply in the case that there is no iterated
data".

-Mike



From nyamatongwe+thunder at gmail.com  Sat Sep  9 19:55:35 2006
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Sat, 09 Sep 2006 23:55:35 GMT
Subject: OT: What encoding is this?
In-Reply-To: <mailman.219.1157842005.5279.python-list@python.org>
References: <mailman.219.1157842005.5279.python-list@python.org>
Message-ID: <XvIMg.26282$rP1.505@news-server.bigpond.net.au>

>     http://www.loppen.dk/side.php?navn=getin
> 
> I'm guessing ISO-8859-15, but the page doesn't indicate and it's none of the
> ones available in Safari.

    It decodes to the same text using ISO-8859-1, ISO-8859-15, or 
Windows-1252. More pages without declarations are produced on Windows so 
I'd guess that its Windows-1252. To tell, look for prices in Euros ("?") 
on the site. If there are \x80 characters in front of prices then it is 
Windows-1252, if \xa4 then it is ISO-8859-15. ISO-8859-1 does not have a 
Euro sign. It isn't Mac-Roman as decoding with Mac-Roman produces 
non-alphabetics in unusual places: "H?jde" rather than "H?jde".

    Neil


From fccoelho at gmail.com  Thu Sep  7 11:17:31 2006
From: fccoelho at gmail.com (Flavio)
Date: 7 Sep 2006 08:17:31 -0700
Subject: xmingw and f2py
Message-ID: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>

Hi,

has anyone tried to build extensions for win32 on Linux using xmingw?

I need to use f2py to compile code for the win32 platform and I want to
do this in Linux. I googled aroung but could not find any documentation
on this.

For those who dont know xmingw is a port to linux of  mingw.

any help is appreciated.

Fl?vio



From rridge at csclub.uwaterloo.ca  Wed Sep 27 20:52:26 2006
From: rridge at csclub.uwaterloo.ca (Ross Ridge)
Date: 27 Sep 2006 17:52:26 -0700
Subject: XSLT speed comparisons
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
	<1159400418.491887.125240@m7g2000cwm.googlegroups.com>
Message-ID: <1159404746.185590.40560@e3g2000cwe.googlegroups.com>

Damian wrote:
> The errors can be seen at http://python.pointy.co.nz/test (I'm leaving
> the existing, slower version running at the moment for the rest of the
> site).

Hmm... it seems that you don't have MSXML 4.0 installed on your
machine.  I missed the fact that you're using ASP.NET, so your ASP code
probably is probably using the .NET XML implementation instead of
MSXML.  In that case, another alternative might be to use IronPython
and just translate your ASP script into Python.

                                         Ross Ridge



From skip at pobox.com  Wed Sep  6 16:58:22 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 6 Sep 2006 15:58:22 -0500
Subject: Data sticking around too long
In-Reply-To: <1157575592.588966.17100@m73g2000cwd.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
	<1157574434.643964.218110@m73g2000cwd.googlegroups.com>
	<1157575592.588966.17100@m73g2000cwd.googlegroups.com>
Message-ID: <17663.13934.958916.519294@montanaro.dyndns.org>

    Cedric> But I'd like to understand this a bit more.

Always a good idea. ;-)

    Cedric> Here's another script:

    Cedric> class ScannerCommand:
    Cedric>     taskName = ''
    Cedric>     scanList = []

    Cedric>     def __init__(self, data):
    Cedric>         self.scanList = []
    Cedric>         self.scanList.append(data)
    ...

The assignment to self.scanList in __init__ creates an instance attribute in
the ScannerCommand instance.  The scanList attribute at the class level is
available as ScannerCommand.scanList.  In your previous code, (no assignment
to self.scanList in __init__), references to self.scanList would search
first in the instance dict for a "scanList" key, then failing to find
anything there, search the class's dict and find its "scanList" key.

Skip


From jaysherby at gmail.com  Fri Sep  1 13:33:19 2006
From: jaysherby at gmail.com (Jay)
Date: 1 Sep 2006 10:33:19 -0700
Subject: raw audio in windows
In-Reply-To: <mailman.10241.1157106075.27775.python-list@python.org>
References: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
	<1157105585.717096.99690@m73g2000cwd.googlegroups.com>
	<mailman.10241.1157106075.27775.python-list@python.org>
Message-ID: <1157131999.632715.190380@m79g2000cwm.googlegroups.com>

So, are you saying this would be possible to do with the PlaySound
function?

Fredrik Lundh wrote:
> Ben Sizer wrote:
>
> > Not really. You'll have to convert it to .wav and then pass it to a
> > helper app.
> >
> > <http://www.microsoft.com/technet/scriptcenter/resources/qanda/nov04/hey1103.mspx>
>
> >>> import winsound
> >>> help(winsound)
> Help on module winsound:
>
> NAME
>     winsound
>
> FILE
>     c:\python24\dlls\winsound.pyd
>
> DESCRIPTION
>     PlaySound(sound, flags) - play a sound
>     SND_FILENAME - sound is a wav file name
>     SND_ALIAS - sound is a registry sound association name
>     SND_LOOP - Play the sound repeatedly; must also specify SND_ASYNC
>     SND_MEMORY - sound is a memory image of a wav file
>     SND_PURGE - stop all instances of the specified sound
>     SND_ASYNC - PlaySound returns immediately
>     SND_NODEFAULT - Do not play a default beep if the sound can not be found
>     SND_NOSTOP - Do not interrupt any sounds currently playing
>     SND_NOWAIT - Return immediately if the sound driver is busy
>
>     Beep(frequency, duration) - Make a beep through the PC speaker.
>
> FUNCTIONS
>     Beep(...)
>         Beep(frequency, duration) - a wrapper around the Windows Beep API
>
>         The frequency argument specifies frequency, in hertz, of the sound.
>         This parameter must be in the range 37 through 32,767.
>         The duration argument specifies the number of milliseconds.
>         On WinNT and 2000, the platform Beep API is used directly.  Else funky
>         code doing direct port manipulation is used; it's unknown whether that
>         will work on all systems.
>
>     MessageBeep(...)
>         MessageBeep(x) - call Windows MessageBeep(x). x defaults to MB_OK.
>
>     PlaySound(...)
>         PlaySound(sound, flags) - a wrapper around the Windows PlaySound API
>
>         The sound argument can be a filename, data, or None.
>         For flag values, ored together, see module documentation.
>
> DATA
>     MB_ICONASTERISK = 64L
>     MB_ICONEXCLAMATION = 48L
>     MB_ICONHAND = 16L
>     MB_ICONQUESTION = 32L
>     MB_OK = 0L
>     SND_ALIAS = 65536L
>     SND_APPLICATION = 128L
>     SND_ASYNC = 1L
>     SND_FILENAME = 131072L
>     SND_LOOP = 8L
>     SND_MEMORY = 4L
>     SND_NODEFAULT = 2L
>     SND_NOSTOP = 16L
>     SND_NOWAIT = 8192L
>     SND_PURGE = 64L
> 
> </F>



From rhymes at myself.com  Thu Sep  7 09:28:42 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 7 Sep 2006 15:28:42 +0200
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
Message-ID: <1hlavwx.237nu65lozv5N%rhymes@myself.com>

Kevin D. Smith <Kevin.Smith at sas.com> wrote:
> Then there is Mike Fletcher's web page 
> (http://www.vrplumber.com/programming/mstoolkit/) that describes in 
> detail how to build extensions, but most of the links to external 
> software are no longer valid.  I think it's safe to say that I am 
> completely lost, as there appears to be no authoritative, up-to-date 
> description on how to make this work.

I managed to set up a compilation toolchain in Windows following that
tutorial so what's your problem?

I installed MS .NET 1.1 and its SDK, the Platform SDK for Windows 2003
sever and the mstoolkit (you have to borrow it from somewhere because
it's not available anymore)
Then I hacked distutils and all worked well.

The only issue is to find the MS Toolkit 2003...

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From limodou at gmail.com  Mon Sep  4 10:07:47 2006
From: limodou at gmail.com (limodou)
Date: Mon, 4 Sep 2006 22:07:47 +0800
Subject: Unicode characters
In-Reply-To: <579of2dotq4rjh60a4jkloohdkokni2eac@4ax.com>
References: <579of2dotq4rjh60a4jkloohdkokni2eac@4ax.com>
Message-ID: <505f13c0609040707t55685697p8b65349a1645368e@mail.gmail.com>

On 9/4/06, Paul Johnston <paul.johnston at manchester.ac.uk> wrote:
> Hi
> I have a string which I convert into a list then read through it
> printing its glyph and numeric representation
>
> #-*- coding: utf-8 -*-
>
> thestring = "abcd"
> thelist = list(thestring)
>
> for c in thelist:
>      print c,
>      print ord(c)
>
> Works fine for latin characters but when I put in a unicode character
> a two byte character gives me two characters. For example an arabic
> alef returns
>
> *  216
> * 167
>
> ( the first asterix is the empty set symbol the second a double "s")
>
> Putting in sequential characters i.e. alef, beh, teh mabuta, gives me
> sequential listings i.e.
> 216  167
> 216  168
> 216  169
> So it is reading the correct details.
>
>
> Is there anyway to get the c in the for loop to recognise it is
> reading a multiple byte character.
> I have followed the info in PEP 0263 and am using Python 2.4.3 Build
> 12 on a Windows box  within Eclipse 3.2.0 and Python plugins 1.2.2
>
If the string is not a unicode, it's be encoded in byte, so you can
only get the every character encoding of the string. You can conver it
to unicode, and if the character value less than 127, it should be an
ascii, otherwise maybe a multibytes character. for example:

a = 'string'
b = unicode(a, encoding_according_your_situation)
for i in b:
   if ord(i) < 127:
       print ord(i), 'ascii'
   else:
       print ord(i), 'multibytes'

-- 
I like python!
My Blog: http://www.donews.net/limodou
UliPad Site: http://wiki.woodpecker.org.cn/moin/UliPad
UliPad Maillist: http://groups.google.com/group/ulipad


From polychrom at softhome.net  Sun Sep  3 07:57:44 2006
From: polychrom at softhome.net (mistral)
Date: 3 Sep 2006 04:57:44 -0700
Subject: How to run Python file?
In-Reply-To: <mailman.10300.1157275059.27775.python-list@python.org>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
	<mailman.10300.1157275059.27775.python-list@python.org>
Message-ID: <1157284664.665790.19660@m79g2000cwm.googlegroups.com>


Steve Holden ?????(?):

> mistral wrote:
> > I have installed ActivePython
> > http://www.activestate.com/Products/ActivePython/
> > How I can run Python file, test.py?

> Sheesh, you must have had ten replies and nobody bothered to point you
> to the frequently-asked questions ... kids today!

>    http://www.python.org/doc/faq/windows.html

> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden
-----------

Really, looks its clear and straightforward Python FAQ. 

thanks.



From mystilleef at gmail.com  Thu Sep 14 08:03:12 2006
From: mystilleef at gmail.com (mystilleef)
Date: 14 Sep 2006 05:03:12 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
Message-ID: <1158235392.623992.138340@i42g2000cwa.googlegroups.com>

I use D-Bus (Python). I recommend it. I don't know how cross platform
it is. However, it supports message passing of most built-in (strings,
ints, lists, dictionaries etc) Python objects accross processes. You
can mimick clean Erlang-like concurrency with it. It is the future of
IPC on Desktop Unix. Given Python's crippled threading implementation,
it can play a role in making your Python applications scalable, with
regards to concurrency. I am recommending D-Bus because I have used it,
and I know it works. I didn't read this of a newsgroup or mailing list.

http://www.freedesktop.org/wiki/Software/dbus

Simon Wittber wrote:
> I've just bought a new notebook, which has a dual core CPU.
>
> I write cross platform games in Python, and I'd really like to be able
> to use this second core (on my machine, and on user's machines) for any
> new games I might write.
>
> I know threads won't help (in CPython at least) so I'm investigating
> other types of concurrency which I might be able to use. I really like
> the PyLinda approach, however I need to be able to pass around all the
> simple python types, which PyLinda won't help me with. Also, PyLinda is
> more focused on distributing computing; I really only want to have 2
> processes cooperating (or 4, if I had 4 CPUs/cores etc).
>
> Is there any cross platform way to share python objects across
> processes? (I've found POSH, but it's old, and doesn't appear to be
> maintained). I could implement my own object space using shared memory,
> but from what I can see, this is not available on Win32.
>
> Are there any other concurrency options I've not discovered yet?
> 
> 
> -Sw.



From xah at xahlee.org  Fri Sep  8 06:56:12 2006
From: xah at xahlee.org (Xah Lee)
Date: 8 Sep 2006 03:56:12 -0700
Subject: A Sort Optimization Technique: decorate-sort-dedecorate
In-Reply-To: <1156719092.603277.57390@b28g2000cwb.googlegroups.com>
References: <1156719092.603277.57390@b28g2000cwb.googlegroups.com>
Message-ID: <1157712972.925924.290800@m79g2000cwm.googlegroups.com>

i just want to make it known that i think most if not all of the
replies in this thread are of not much technical value. They are either
wrong and or misleading, and the perl module mentioned about sorting or
the Java language aspect on sorting, as they are discussed or
represented, are rather stupid.

I may or may not write a detailed account later. If you have specific
questions, or want to know specific reasons of my claims, please don't
hesitate to email. (privately if you deem it proper)

  Xah
  xah at xahlee.org
? http://xahlee.org/

xahlee at gmail.com wrote:
> Last year, i've posted a tutorial and commentary about Python and
> Perl's sort function. (http://xahlee.org/perl-python/sort_list.html)
>
> In that article, i discussed a technique known among juvenile Perlers
> as the Schwartzian Transform, which also manifests in Python as its
> ?key? optional parameter.
>
> Here, i give a more detailed account on why and how of this construct.
>...
> This post is archived at:
> http://xahlee.org/perl-python/sort_list.html
>
> I would be interested in comments about how Common Lisp, Scheme, and
> Haskell deal with the decorate-sort-dedecorate technique. In
> particular, does it manifest in the language itself? If not, how does
> one usually do it in the code? (note: please reply to approprate groups
> if it is of no general interest. Thanks) (am also interested on how
> Perl6 or Python3000 does this, if there are major changes to their sort
> function)
> 
> Thanks.
> 
>   Xah
>   xah at xahlee.org
> ? http://xahlee.org/



From steve at holdenweb.com  Tue Sep 19 20:52:57 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 20:52:57 -0400
Subject: Python programs always open source?
In-Reply-To: <87fyen2znt.fsf@benfinney.id.au>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>	<mailman.227.1158581355.10491.python-list@python.org>	<450eb358$0$19900$4d3efbfe@news.sover.net>	<mailman.233.1158592608.10491.python-list@python.org>	<450ebb84$0$19909$4d3efbfe@news.sover.net>	<mailman.246.1158625452.10491.python-list@python.org>	<4n9n4iF99lbqU1@uni-berlin.de>
	<87k6402i62.fsf@benfinney.id.au>	<20060919163146.GA5295@kateandchris.net>
	<87fyen2znt.fsf@benfinney.id.au>
Message-ID: <eeq3br$o6l$1@sea.gmane.org>

Ben Finney wrote:
[...]
> That latter case is the only one for most interpreted Python programs:
> no part of the library is in the source code of the Python program, so
> the license of that library doesn't affect the licensing of the
> program.
> 
> Write your program in Python, and you can ignore the Python license
> when you distribute your own work. We'd love to see you distribute it
> under a free software license, but the license of Python has no legal
> effect on your decision.
> 
Given that many people distribute (enough of) the interpreter with their 
Python programs I wouldn't like the above to be regarded as a blanket 
statement that the Python license doesn't have to be considered when 
distributing the interpreter with program source.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From tim.golden at viacom-outdoor.co.uk  Wed Sep 13 06:47:29 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 13 Sep 2006 11:47:29 +0100
Subject: pyLinda?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B445@vogbs009.gb.vo.local>

(Caveat Lector: I've dabbled with this, but a while ago)

[Gardner Pomper]
| It sounds like pyLinda runs a server process and stores 
| tuples in it. 

That's about. From the "Beginner's Guide" page:
http://www-users.cs.york.ac.uk/aw/pylinda/beginner.html

"""
First a server must be started - linda_server.py
.
.
If you want to add a new computer to the linda network simply 
run 'linda_server.p -c<ip address or dns name>' where the 
computer you supply is already running a linda server.
"""

| How does this work with multiple machines? One 
| server per machine? 

Yes. As above. I suppose one could build some sort
of directory or discovery service if one wanted.
(Haven't tried it; no idea what the pitfalls might be).

| Do you connect to your local server and then that server 
| has some sort of directory that tells it which server 
| holds the object you are looking for? Or are the servers 
| synchronized somehow? 

What you're doing here is matching a tuple, not finding
named objects as such (which is what your "directory"
suggested to me). That said, there is a well-known
("universe") tuplespace which everyone can get hold
of -- don't know what the underlying mechanism is, 
and I don't have the source code to hand. The idea
is that if you create your own tuplespace, you put
*that* tuplespace in the universal one so that 
other processes can pick it up. eg,

http://www-users.cs.york.ac.uk/aw/pylinda/doc/tutorial.html

NB This uses a non-destructive read (_rd) so that any
other process can look for the well-known tuple or
tuple-pattern. (eg you could specify that a new tuplespace
will be published as ("TUPLESPACE", linda.TupleSpace) where 
the second item in the tuple is the tuplespace in question.

| That should get me started. As many others here, I don't have 
| an immediate project for pyLinda, but I would like to 
| understand what it offers better so that I can identity an 
| appropriate project if one appears.

I think the thing it's best suited for is distributed
computing, rather like a sort of networked Python Queue
object (vague hand-waving...).

TJG

________________________________________________________________________
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From gandalf at designaproduct.biz  Mon Sep  4 12:27:41 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Mon, 04 Sep 2006 18:27:41 +0200
Subject: py2exe and libxml
Message-ID: <44FC53FD.20403@designaproduct.biz>


I wrote a little win32 console application that uses libxml2. It is 
working fine. If I create an .exe version, I get this error when I try 
to start the program:

Traceback (most recent call last):
  File "MyProgram.py", line 3, in ?
  File "mylib\item.pyc", line 5, in ?
ImportError: dynamic module does not define init function (initlibxml2)

What is wrong here?
Thanks

   Laszlo



From beliavsky at aol.com  Fri Sep  1 08:24:02 2006
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 1 Sep 2006 05:24:02 -0700
Subject: How to make an announcement (was Re: ANN: GMPY binaries for Windows
	2.5)
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
Message-ID: <1157113442.243950.193320@i42g2000cwa.googlegroups.com>

casevh at comcast.net wrote:
> GMPY binaries for Python 2.5 are available at
> http://home.comcast.net/~casevh/

"The General Multiprecision PYthon project (GMPY) focuses on
Python-usable modules providing multiprecision arithmetic functionality
to Python programmers."

A sign of Python's health is that there are so many open-source
projects that it is difficult to keep track of all of them. I think
announcements should contain at least one sentence describing what the
project is about. One can Google this, of course, but it saves the
reader time if this information is provided in the message.

>
> Notes
> ====
> They have not been extensively tested.
>
> This is based on the CVS version of gmpy and includes a patch (not yet
> in CVS) from Alex Martelli that resolves a bug with divm(). Please
> consider this an "unofficial" release. The patch and the source code
> snapshot I used are also available on the website.
>
> GMP 4.2.1 is used.
>
> There are three versions available: one that should work on any
> processor, one compiled for Pentium 4 processor, and one compiled for
> AMD Athlon (32-bit).
>
> If there is demand, I'll create updated binaries for earlier version of
> Python.
> 
> Enjoy,
> 
> casevh



From skip at pobox.com  Tue Sep  5 10:58:43 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 09:58:43 -0500
Subject: threading support in python
In-Reply-To: <1157467255.633817.3740@m73g2000cwd.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
Message-ID: <17661.37027.891231.814161@montanaro.dyndns.org>


    Sandra> However, I don't expect that the GIL can be safely removed from
    Sandra> CPython.

It was removed at one point in the dim, dark past (circa Python 1.4) on an
experimental basis.  Aside from the huge amount of work, it resulted in
significantly lower performance for single-threaded apps (that is, the
common case).  Maybe more effort should have been put in at that time to
improve performance, but that didn't happen.  Much more water has gone under
the bridge at this point, so extracting the GIL from the core would be
correspondingly more difficult.

Skip


From tenax.raccoon at gmail.com  Thu Sep  7 13:10:17 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 7 Sep 2006 10:10:17 -0700
Subject: python vs java
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
	<44fedfd2$0$32654$626a54ce@news.free.fr>
	<1157578594.300005.47550@e3g2000cwe.googlegroups.com>
	<44ffce0a$0$24536$626a54ce@news.free.fr>
	<mailman.119.1157632047.5279.python-list@python.org>
Message-ID: <1157649017.318524.140000@p79g2000cwp.googlegroups.com>

Felipe Almeida Lessa wrote:
> 2006/9/7, Bruno Desthuilliers <onurb at xiludom.gro>:
> > I don't think one could pretend writing a cross-platform application
> > without testing it on all targeted platforms.
>
> E.g: while creating a free software, you may not have an Apple
> computer but you may want to be *possible* to run your program there.
> You don't test it, but you *think* it runs there. Not everybody has a
> spare MacOS X to test apps.

Ah, but those with the Intel Apples can run Linux, Windows, and Mac OS
X at the same time!  *grin*

Actually, that's how I'm working on my wx/Python application.  I write
it under Mac OS X and occasionally pull it into my Windows and Ubuntu
virtual machines for further testing.

> Of course, if your software *needs* to run in some particular OS then
> you have to test on it.

Certainly.  And this point should be emphasized for any cross-platform
language, especially for folk who may not have done such development
before.  The "write once, run everywhere" phrase does have a footnote.
Python's documentation is very good at pointing out what is platform
independent and what isn't, but other packages are not as thorough.

    --Jason



From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 06:49:58 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 11:49:58 +0100
Subject: Import a textfile to MS SQL with python
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B413@vogbs009.gb.vo.local>

[joel.sjoo at gmail.com]

| Traceback (most recent call last):
| File "txttosql6.py", line 23, in ?
|     row
| File "C:\Python24\Lib\site-packages\pymssql.py", line 120, in execute
|     self.executemany(operation, (params,))
| File "C:\Python24\Lib\site-packages\pymssql.py", line 146, in
| executemany
|     raise DatabaseError, "internal error: %s (%s)" %
| (self.__source.errmsg(), se
| lf.__source.stdmsg())
| pymssql.DatabaseError: internal error: None (None)

Are you calling .execute or .executemany? Your code below
has .execute, but the traceback is coming from .executemany.
If you're using the latter, you need to pass the whole list
at once:

.
.
.
mycursor = myconn.cursor()
# omit: for row in data:
mycursor.executemany (
  "INSERT INTO python (id, namn, efternamn) VALUES (?, ?, ?)",
  data
)

If that's not the problem, I can't easily see what it is.
I don't usually use pymssql, but I do have it installed,
so if I get a chance later, I'll give it a go.

TJG

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From sandravandale at yahoo.com  Tue Sep  5 10:40:55 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 5 Sep 2006 07:40:55 -0700
Subject: threading support in python
In-Reply-To: <mailman.7.1157438963.5279.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
Message-ID: <1157467255.633817.3740@m73g2000cwd.googlegroups.com>


Steve Holden wrote:
> Quite right too. You haven't even sacrificed a chicken yet ...

Hopefully we don't get to that point.

> You write as though the GIL was invented to get in the programmer's way,
> which is quite wrong. It's there to avoid deep problems with thread
> interaction. Languages that haven't bitten that bullet can bite you in
> quite nasty ways when you write threaded applications.

I know it was put there because it is meant to be a good thing.
However, it gets in my way. I would be perfectly happy if it were gone.
I've never written code that assumes there's a GIL. I always write my
code with all shared writable objects protected by locks. It's far more
portable, and a good habit to get into. You realize that because of the
GIL, they were discussing (and may have already implemented) Java style
synchronized dictionaries and lists for IronPython simply because
python programmers just assume they are thread safe thanks to the GIL.
I always hated that about Java. If you want to give me thread safe
collections, fine, they'll be nice for sharing between threads, but
don't make me use synchronized collections for single-threaded code.
You'll notice the newer Java collections are not synchronized, it would
seem I'm not alone in that opinion.

> Contrary to your apparent opinion, the GIL has nothing to do with
> reference-counting.

Actually it does. Without the GIL reference counting is not thread
safe. You have to synchronize all reference count accesses, increments,
and decrements because you have no way of knowing which objects get
shared across threads. I think with Python's current memory management,
the GIL is the lesser evil.

I'm mostly writing this to provide a different point of view, many
people seem to think (previously linked blog) that there is no downside
to the GIL, and that's just not true. However, I don't expect that the
GIL can be safely removed from CPython. I also think that it doesn't
matter because projects like IronPython and PyPy are very likely the
way of the future for Python anyway. Once you move away from C there
are so many more things you can do.

> I think the suggestion was rather that abandoning Python because of the
> GIL might be premature optimisation. But since you appear to be sticking
> with it, that might have been unnecessary advice.

I would never abandon Python, and I hold the development team in very
high esteem. That doesn't mean there's a few things (like the GIL, or
super) that I don't like. But overall they've done an excellent job on
the 99% of things the've got right. I guess we don't say that enough.

I might switch from CPython sometime to another implementation, but it
won't be because of the GIL. I'm very fond of the .net framework as a
library, and I'd also rather write performance critical code in C# than
C (who wouldn't?) I'm also watching PyPy with interest.

-Sandra



From sjmachin at lexicon.net  Thu Sep 14 08:04:36 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 05:04:36 -0700
Subject: How can I get the function's caller?
In-Reply-To: <1bh54jbm2c80o.16pku3s9x2h2f$.dlg@40tude.net>
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
	<1158132707.092664.16260@i3g2000cwc.googlegroups.com>
	<1bh54jbm2c80o.16pku3s9x2h2f$.dlg@40tude.net>
Message-ID: <1158235476.083966.150940@e3g2000cwe.googlegroups.com>


David wrote:
> Il 13 Sep 2006 00:31:47 -0700, John Machin ha scritto:
>
> > David wrote:
> >> Inside a function I need to get the function's caller's name. How can I get
> >> it?
> >>
> >
> > Check out the thread "__LINE__ and __FILE__ functionality in Python?"
> > (messages posted 2006-0813).
>
> I'll check thankyou!
> Traffic in this NG is so high that is difficult to stay uptodate.

You don't need to. Google is your friend. Google "caller name" in this
NG; it's that simple :-)

Cheers,
John



From bearophileHUGS at lycos.com  Sat Sep  9 23:11:32 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 9 Sep 2006 20:11:32 -0700
Subject: Function metadata (like Java annotations) in Python
In-Reply-To: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
Message-ID: <1157857892.537756.181530@p79g2000cwp.googlegroups.com>

oripel:

Maybe this is a silly suggestion, the docstring is already overloaded,
but it may be used for this too:

def foo():
    """
    ...
    ...
    @ATTR name="Xander"
    @ATTR age=10
    @ATTR hobby="knitting"
    """
    ...

(Or somethins similar without the @). Later you can retrive the
attributes from the docstring, for example using a verbose RE like:
r"\s* @ATTR \s+ (\w*) \s* = \s* (.*)"
And you use it to create a dict of attributes.
The decorators you apply to foo() must keep its docstring too.

Bye,
bearophile



From edreamleo at charter.net  Fri Sep  8 09:00:25 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Fri, 8 Sep 2006 08:00:25 -0500
Subject: A static pychecker?
Message-ID: <OPdMg.1076$fK7.563@newsfe03.lga>

I am wondering whether anyone knows of a static source-code analyzer for 
Python, kinda like a static pychecker.



That is, instead of being a run-time tool as pychecker is, it would be a 
'compile-time' tool.  If I were writing such a thing it would use the ast 
returned from compiler.parse.  Unlike the inspect module, it would peruse 
the code looking for possible problems.



Thanks.



Edward

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From vbfoobar at gmail.com  Sat Sep  9 02:59:26 2006
From: vbfoobar at gmail.com (vbfoobar at gmail.com)
Date: 8 Sep 2006 23:59:26 -0700
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <f2qMg.2654$MF1.1405@newssvr25.news.prodigy.net>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
	<f2qMg.2654$MF1.1405@newssvr25.news.prodigy.net>
Message-ID: <1157785166.255442.79730@m73g2000cwd.googlegroups.com>


James Stroud a ?crit :

> vbfoobar at gmail.com wrote:
> > Hello
> >
> > I am looking for python code that takes as input a list of strings
> > (most similar,
> > but not necessarily, and rather short: say not longer than 50 chars)
> > and that computes and outputs the python regular expression that
> > matches
> > these string values (not necessarily strictly, perhaps the code is able
> > to determine
> > patterns, i.e. families of strings...).
> >
> > Thanks for any idea
> >
>
> I'm not sure your application, but Genomicists and Proteomicists have
> found that Hidden Markov Models can be very powerful for developing
> pattern models. Perhaps have a look at "Biological Sequence Analysis" by
> Durbin et al.
>
> Also, a very cool regex based algorithm was developed at IBM:
>
>     http://cbcsrv.watson.ibm.com/Tspd.html

Indeed, this seems cool! Thanks for the suggestion

I have tried their online Text-symbol Pattern Discovery
with these input values:

cpkg-30000
cpkg-31008
cpkg-3000A
cpkg-30006
nsug-300AB
nsug-300A2
cpdg-30001
nsug-300A3

>
> But I think HMMs are the way to go. Check out HMMER at WUSTL by Sean
> Eddy and colleagues:
>
>      http://hmmer.janelia.org/
>
>      http://selab.janelia.org/people/eddys/

I will look at that more precisely, but at my first look
it seems this is more specialized and less accessible
for the common mortal...
>
> James

Thanks. This may help me.

In addition I continue to look for other ideas, notably
because I want code that I can change myself,
and exclusively python code


>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/



From simon at brunningonline.net  Fri Sep 29 05:50:16 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Fri, 29 Sep 2006 10:50:16 +0100
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <efihm1$jqi$1@sea.gmane.org>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
	<mailman.918.1159509387.10491.python-list@python.org>
	<1159510625.265885.226700@i3g2000cwc.googlegroups.com>
	<1159511802.337981.216840@e3g2000cwe.googlegroups.com>
	<efihm1$jqi$1@sea.gmane.org>
Message-ID: <8c7f10c60609290250p3983c3dfp4ca4905f15f9e6eb@mail.gmail.com>

On 9/29/06, Steve Holden <steve at holdenweb.com> wrote:
> Unfortunately forty years of programming experience has taught me that
> there's an essentially infinite supply of mistakes to make ... your
> mistakes just get smarter most of the time.

+1 QOTW.

-- 
Cheers,
Simon B,
simon at brunningonline.net


From wildemar at freakmail.de  Sat Sep 16 17:35:51 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sat, 16 Sep 2006 23:35:51 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <450C6E37.3040409@freakmail.de>

nicolasfr at gmail.com wrote:
> Hi,
> 
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
> 
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info

And what's so wrong about
http://wiki.python.org/moin/ ?

I'm really not trying to put you down, I just feel that the closer the 
documentation is to the official website the more people will read it 
(or am I being too naive here?).

wildemar


From unni.tallman at gmail.com  Tue Sep 19 23:40:50 2006
From: unni.tallman at gmail.com (unni.tallman)
Date: 19 Sep 2006 20:40:50 -0700
Subject: Single character input without pressing 'Enter'
Message-ID: <1158723650.091962.98640@m73g2000cwd.googlegroups.com>

how can i read input from stdin, char by char, i want to get the
character as soon as it is entered, without having to press 'Enter'
after each character.



From jstroud at mbi.ucla.edu  Sat Sep 30 06:15:40 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 30 Sep 2006 10:15:40 GMT
Subject: ruby %w equivalent
In-Reply-To: <f0XRg.4783$Go3.4404@dukeread05>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<WVWRg.4782$Go3.723@dukeread05> <f0XRg.4783$Go3.4404@dukeread05>
Message-ID: <gtrTg.402$NE6.23@newssvr11.news.prodigy.com>

hg wrote:
> But today ? what is the cost of replacing %w("blah blah") by
> Hi_I_Want_To_Split_The_String_That_Follows( "blah blah")

The latter is beginning to look like the Cocoa/NextStep framework. 
Perhaps we should give up scripting languages for ObjC?

James


From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep  7 10:14:38 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 7 Sep 2006 16:14:38 +0200
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
Message-ID: <slrneg0aae.q7s.sybrenUSE@schuimige.stuvel.eu>

Kevin D  Smith enlightened us with:
> I've written a simple Python extension for UNIX, but I need to get
> it working on Windows now.  I'm having some difficulties figuring
> out how to do this.

I had to do the same, and I didn't get much result. My solution:
install Cygwin, use the Python that comes with that, and use gcc just
like you're used to. Works like a charm, but the compiled extension is
incompatible with the regular Windows Pythons from python.org and
ActiveState.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From bdesth.quelquechose at free.quelquepart.fr  Mon Sep  4 19:46:51 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 05 Sep 2006 01:46:51 +0200
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <44fcb7fb$0$31422$626a54ce@news.free.fr>

alf a ?crit :
> Hi,
> 
> I have a reference to certain objects. What is the most pythonic way to 
> test for valid reference:
> 
>     if obj:

Don't do this:

for o in [0, '', [], {}, ()]:
   print obj, bool(obj), obj is None


>     if None!=obs:

In python, assignement is a statement, not an expression, so there's no 
way you could write 'if obj = None' by mistake (-> syntax error). So 
this style is unpythonic. Also, None is a singleton, and identity test 
is way faster than equality test.

>     if obj is not None:

That's the good one.


From andi.clemens at gmx.net  Sun Sep 17 10:15:42 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Sun, 17 Sep 2006 16:15:42 +0200
Subject: matplotlib: TypeError: a float is required
In-Reply-To: <1158502350.209430.173600@e3g2000cwe.googlegroups.com>
References: <eejesq$guv$1@online.de>
	<1158498950.458578.302140@i42g2000cwa.googlegroups.com>
	<eejkba$qqn$1@online.de>
	<1158502350.209430.173600@e3g2000cwe.googlegroups.com>
Message-ID: <eejl8u$qqn$3@online.de>

Tim Heaney found out what the problem is, thanks for your help!
;-)

Andi

John Machin wrote:
> Andi Clemens wrote:
>> All examples were taken from the matplotlib-homepage but they won't work
>> on my installation and I don't know why.
>> You point out that "left and height are Numeric arrays", and that is
>> exactly what they are, so what am I missing?
> 
> Looks to me like for "height" you are passing in menMeans which is a
> tuple containing integers. The standard deviation args have the same
> problem
> 
>> I tried nearly 10 examples from different websites and tutorials and
>> none of them worked!
> 
> Care to point me at the smallest other example that didn't work? Did
> you copy/paste the example or did you retype it? Does "not work" mean
> each gave the same error from the same line of code in Numeric? If not,
> is there any pattern that you can detect?
> 

-- 
homepage: http://www.the-grudge.net
ICQ: 9450091
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From f.braennstroem at gmx.de  Thu Sep 14 14:29:19 2006
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Thu, 14 Sep 2006 20:29:19 +0200
Subject: latex openoffice converter
Message-ID: <eec71v$ts2$1@sea.gmane.org>

Hi,

I would like to use python to convert 'simple' latex
documents into openoffice format. Maybe, anybody has done
something similar before and can give me a starting point!?
Would be nice to hear some hints!

Greetings!
 Fabian



From mccredie at gmail.com  Wed Sep  6 18:07:34 2006
From: mccredie at gmail.com (Matimus)
Date: 6 Sep 2006 15:07:34 -0700
Subject: Data sticking around too long
In-Reply-To: <1157576271.093483.74600@i42g2000cwa.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
	<1157574434.643964.218110@m73g2000cwd.googlegroups.com>
	<1157575592.588966.17100@m73g2000cwd.googlegroups.com>
	<1157576271.093483.74600@i42g2000cwa.googlegroups.com>
Message-ID: <1157580454.190529.38470@d34g2000cwd.googlegroups.com>

Someone correct me if I'm wrong (sometimes I get the terms mixed up)
but I believe that what you are seeing is due to 'number' being an
immutable type. This means that its value cannot be changed and thus
each assignment is effectively creating a new instance if int. I
believe lists are considered immutable also but since it is a container
type it behaves somewhat differently. I read a thread earlier that
addressed a similar issue but I can't find it now. I will post again if
I come accross it. Anyway, as a demonstration try this using python's
command line prompt:

>>> i = int()
>>> j = i
>>> j is i
True
### j and i are attributes that point to the same instance
>>> i = 1
>>> j is i
False
### assignment to I made a new instance and j and i are no longer the
same instance
>>> a = [0,1,2]
>>> b = a
>>> b is a
True
### the same is true for lists
>>> b = [0,1,3]
>>> b is a
False
>>> b = a
>>> b is a
True
### but since 'a' is a container its contents can be modified without
creating a new instance
>>> b[1] = 3
>>> b is a
True
>>> a
[0,3,2]
>>> b
[0,3,2]
>>> a.append(4)
>>> a
[0,3,2,4]
>>> b
[0,3,2,4]
>>> b is a
True

I hope this helps.

-Matt

CedricCicada at gmail.com wrote:
> Greetings again!
>
> There's something more to determining whether a class member is a class
> variable or an instance variable.  Here's a slightly expanded version
> of my last script:
>
> class ScannerCommand:
>     taskName = ''
>     scanList = []
>     number = 0
>
>     def __init__(self, data):
>         pass
> #        self.scanList = []
> #        self.scanList.append(data)
>
> if __name__ == '__main__':
>     c1 = ScannerCommand("c1")
>     c2 = ScannerCommand("c2")
>     c1.number = 1
>     c2.number = 2
>     c1.scanList.append("One")
>     c2.scanList.append("Two")
>     print "C1: " + str(c1.number)
>     for data in c1.scanList:
>         print "   " + data
>     print "C2: " + str(c2.number)
>     for data in c2.scanList:
>         print "   " + data
>
> And here's the output:
> C1: 1
>    One
>    Two
> C2: 2
>    One
>    Two
>
> Here, the two instances share the scanList list, as expected from
> previous discussions, but they have their own copies of the number
> variable.  Why is scanList a class variable but number an instance
> variable here?
>
> Good night, all!
> 
> Rob Richardson
> RAD-CON, Inc.
> Bay Village, OH



From tony.bedford at gmail.com  Thu Sep 21 17:34:31 2006
From: tony.bedford at gmail.com (codefire)
Date: 21 Sep 2006 14:34:31 -0700
Subject: I need some help with a regexp please
In-Reply-To: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
Message-ID: <1158874471.410073.71570@i3g2000cwc.googlegroups.com>

Hi,

thanks for the advice guys.

Well took the kids swimming, watched some TV, read your hints and
within a few minutes had this:

r = re.compile(r'[^.\w]\w+\.?\w+@[^@\s]+\.\w+')

This works for me. That is if you have an invalid email such as
tony..bATblah.com it will reject it (note the double dots).

Anyway, now know a little more about regexps :)

Thanks again for the hints,

Tony



From fredrik at pythonware.com  Wed Sep 20 07:37:44 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 20 Sep 2006 13:37:44 +0200
Subject: Single character input without pressing 'Enter'
In-Reply-To: <1158723650.091962.98640@m73g2000cwd.googlegroups.com>
References: <1158723650.091962.98640@m73g2000cwd.googlegroups.com>
Message-ID: <eer969$v44$3@sea.gmane.org>

unni.tallman wrote:

> how can i read input from stdin, char by char, i want to get the
> character as soon as it is entered, without having to press 'Enter'
> after each character.

related FAQ entries:

http://pyfaq.infogami.com/how-do-i-get-a-single-keypress-at-a-time
http://pyfaq.infogami.com/how-do-i-check-for-a-keypress-without-blocking

(they should probably link to each other ;-)

</F>



From daniel.huangfei at gmail.com  Sat Sep 30 03:33:03 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 30 Sep 2006 00:33:03 -0700
Subject: why logging re-raise my exception and can't be caught?
Message-ID: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>

I use a simple program to illustrate the problem:

import logging

def foo() :
    raise ValueError("foo")

if __name__ == "__main__" :
    try :
        foo()
    except ValueError :
        logging.exception("caught here")  -- seems re-raise the
exception and can't be caught
        print "caught here" --- just works.

I'm expecting the exception to be caught silently, and print the msg to
some place, if I comment out the logging statement, it just works, but
now, the stack trace is printed as if the except statement was not
there!!

how could this happen, just weird.. can I make the logging module
behave as I expected?

tks in advance.

daniel



From sjmachin at lexicon.net  Wed Sep 13 20:28:40 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 17:28:40 -0700
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
	<ee98cn$qhp$1@foggy.unx.sas.com>
	<mailman.40.1158163197.10491.python-list@python.org>
	<1158164270.297334.209790@d34g2000cwd.googlegroups.com>
	<45083752.5050005@v.loewis.de>
Message-ID: <1158193720.389813.155170@b28g2000cwb.googlegroups.com>

Martin v. L?wis wrote:
> John Machin schrieb:
> > Any support for the radical notion of the error message giving the full
> > path of the file that it's complaining about? If so, I'll lob in an
> > enhancement request in the morning ...
>
> A patch would be appreciated much more so.
>

Hi Martin, I do hope you don't regret opening Pandora's box :-)

Does the following look about right?
I was somewhat bemused by the limit of 200 bytes on the module name in
the error message-- I woild have thought about 20 was more appropriate.
Sorry but I can't test this (Windows box, don't have whatever version
of C compiler is necessary to compile Python).

Cheers,
John
8<---
--- Python/importdl.c.orig      2006-09-14 09:53:59.984375000 +1000
+++ Python/importdl.c   2006-09-14 09:55:53.625000000 +1000
@@ -44,8 +44,8 @@
                return NULL;
        if (p == NULL) {
                PyErr_Format(PyExc_ImportError,
-                  "dynamic module does not define init function
(init%.200s)",
-                            shortname);
+                  "dynamic module (%s) does not define init function
(init%.200s)",
+                            pathname, shortname);
                return NULL;
        }
         oldcontext = _Py_PackageContext;
8<---



From ldo at geek-central.gen.new_zealand  Tue Sep 26 20:42:03 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 12:42:03 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<mailman.633.1159251691.10491.python-list@python.org>
	<efak2d$hbo$3@lust.ihug.co.nz>
	<mailman.745.1159306008.10491.python-list@python.org>
Message-ID: <efchb0$2cc$3@lust.ihug.co.nz>

In message <mailman.745.1159306008.10491.python-list at python.org>, Gabriel G
wrote:

> At Tuesday 26/9/2006 04:16, Lawrence D'Oliveiro wrote:
> 
>> >> >> What precisely do you think it would "break"?
>> > FWIW, a *lot* of unit tests on *my* generated html code would break...
>>Why did you write your code that way?
> 
> Uhm, maybe because I relied on the published documentation of a
> published standard module?

And if the published documentation said you had to jump off a cliff to use
it, you would do that?


From tal.no.no.spam at gmail.com  Sat Sep  2 07:59:48 2006
From: tal.no.no.spam at gmail.com (Tal Einat)
Date: 2 Sep 2006 04:59:48 -0700
Subject: Netstat Speed
In-Reply-To: <44f95c2c@127.0.0.1>
References: <44f95c2c@127.0.0.1>
Message-ID: <1157198388.092809.142960@m73g2000cwd.googlegroups.com>


DarkBlue wrote:
> Following code works .
> My question is can I make it faster ?
>
Faster how? Are you calling this so many times that you need it to be
extremely fast? Are you calling it on the same IP multiple times, on
many different IPs at once, ...?

>
> def activeip(checkip):
>      # if there is any line returned we set activeb to 1 indicating that
>      # this ip is active during a netstat run
>      activeb=0
>      for line in os.popen("netstat -a -n | grep '%s'" % checkip) :
>      s=line
>      if s <>'' :
>         activeb=1
>      return activeb
>

Since you state you want this faster I assume you're calling this quite
a bit. To start with, perhaps you could save the output of netstat, go
over it once collecting IPs, and save these for future lookup. Surely
this will be faster than running a shell command every time.

- Tal



From sandravandale at yahoo.com  Tue Sep  5 15:13:47 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 5 Sep 2006 12:13:47 -0700
Subject: threading support in python
In-Reply-To: <1157469825.184895.176080@d34g2000cwd.googlegroups.com>
References: <1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<4klub9Fcqv5kU1@individual.net>
	<1155932094.617287.84980@i3g2000cwc.googlegroups.com>
	<1155933754.114724.250180@i3g2000cwc.googlegroups.com>
	<gTqFg.16305$o27.3834@newssvr21.news.prodigy.com>
	<4knq9hFctlsuU1@individual.net>
	<1156001501.741149.162810@h48g2000cwc.googlegroups.com>
	<PsJFg.66833$u11.21481@tornado.ohiordc.rr.com>
	<1157214620.847062.68090@b28g2000cwb.googlegroups.com>
	<1157409631.751524.99560@b28g2000cwb.googlegroups.com>
	<1157469825.184895.176080@d34g2000cwd.googlegroups.com>
Message-ID: <1157483627.528066.95200@e3g2000cwe.googlegroups.com>

sjdevnull at yahoo.com wrote:
> You can do the same on Windows if you use CreateProcessEx to create the
> new processes and pass a NULL SectionHandle.  I don't think this helps
> in your case, but I was correcting your impression that "you'd have to
> physically double the computer's memory for a dual core, or quadruple
> it for a quadcore".  That's just not even near true.

Sorry, my bad. What I meant to say is that for my application I would
have to increase the memory linearly with the number of cores. I have
about 100mb of memory that could be shared between processes, but
everything else would really need to be duplicated.

> As I said, Apache used to run on Windows with multiple processes; using
> a version that supports that is one option.  There are good reasons not
> to do that, though, so you could be stuck with threads.

I'm not sure it has done that since the 1.3 releases. mod_python will
work for that, but involves going way back in it's release history as
well. I really don't feel comfortable with that, and I don't doubt I'd
give up a lot of things I'd miss.

> Having memory protection is superior to not having it--OS designers
> spent years implementing it, why would you toss out a fair chunk of it?
>  Being explicit about what you're sharing is generally better than not.

Actually, I agree. If shared memory will prove easier, then why not use
it, if the application lends itself to that.

> But as I said, threads are a better solution if you're sharing the vast
> majority of your memory and have complex data structures to share.
> When you're starting a new project, really think about whether they're
> worth the considerable tradeoffs, though, and consider the merits of a
> multiprocess solution.

There are merits, the GIL being one of those. I believe I can fairly
easily rework things into a multi-process environment by duplicating
memory. Over time I can make the memory usage more efficient by sharing
some data structures out, but that may not even be necessary. The
biggest problem is learning my way around Linux servers. I don't think
I'll choose that option initially, but I may work on it as a project in
the future. It's about time I got more familiar with Linux anyway.

> It's almost certainly not worth rewriting a large established
> codebase.

Lazy me is in perfect agreement.

> I disagree with this, though.  The benefits of deterministic GC are
> huge and I'd like to see ref-counting semantics as part of the language
> definition.  That's a debate I just had in another thread, though, and
> don't want to repeat.

I just took it for granted that a GC like Java and .NET use is better.
I'll dig up that thread and have a look at it.

> I didn't say that.  It can be a big hit or it can be unnoticeable.  It
> depends on your application.  You have to benchmark to know for sure.
>
> But if you're trying to make a guess: if you're doing a lot of heavy
> lifting in native modules then the GIL may be released during those
> calls, and you might get good multithreading performance.  If you're
> doing lots of I/O requests the GIL is generally released during those
> and things will be fine.  If you're doing lots of heavy crunching in
> Python, the GIL is probably held and can be a big performance issue.

I don't do a lot of work in native modules, other than the standard
library things I use, which doesn't count as heavy lifting. However I
do a fair amount of database calls, and either the GIL is released by
MySQLdb, or I'll contribute a patch so that it is. At any rate, I will
measure, and I suspect the GIL will not be an issue.

-Sandra



From johnjsal at NOSPAMgmail.com  Sat Sep 30 16:26:06 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 16:26:06 -0400
Subject: PyXML not supported, what to use next?
In-Reply-To: <4o814eFdebrhU1@individual.net>
References: <4o814eFdebrhU1@individual.net>
Message-ID: <451ed335$0$14732$c3e8da3@news.astraweb.com>

Paul Watson wrote:
> It would appear that xml.dom.minidom or xml.sax.* might be the best 
> thing to use since PyXML is going without support.  Best of all it is 
> included in the base Python distribution, so no addition hunting required.
> 
> Is this right thinking?  Is there a better solution?

You can try ElementTree, it comes with 2.5 (xml.etree.ElementTree).


From python.list at tim.thechases.com  Fri Sep 29 15:37:16 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 29 Sep 2006 14:37:16 -0500
Subject: creating a small test server on my local computer
In-Reply-To: <efeTg.56$1n3.620@news.tufts.edu>
References: <9bdTg.54$1n3.399@news.tufts.edu>	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
Message-ID: <451D75EC.4060108@tim.thechases.com>

>> Why do you need to use Python for the server?
> 
> Well, perhaps I don't know what I'm talking about. I'm on an XP machine 
> and I just needed a way to test my web pages, and I thought Python could 
> be used to create a server to do this. But I know nothing about network 
> programming...

Well, you could investigate WebStack:

http://www.boddie.org.uk/python/WebStack.html
http://cheeseshop.python.org/pypi/WebStack/1.1.2

which allows you to develop for a variety of deployment targets, 
inter alia CGI, mod_python, and BaseHTTPServer.  The last is nice 
as you can run it on your local machine for testing.  Then, to 
deploy to another environment, you just tweak one file (your 
adaptor file) to change from, say, BaseHTTPServer to mod_python.

The documentation is a bit terse, and lacking in some areas, but 
a little debugging output goes a long way toward diagnosing 
problems with your code.

In my experience, it takes targeting WebStack's abstraction 
framework rather than any of the particular platforms, but the 
portability is unbeatable.

Just a satisfied customer of Boddie's work,

-tkc






From frank at chagford.com  Thu Sep  7 04:33:30 2006
From: frank at chagford.com (Frank Millman)
Date: 7 Sep 2006 01:33:30 -0700
Subject: Question about subclassing and overriding methods
In-Reply-To: <44ffd3d1$0$27565$626a54ce@news.free.fr>
References: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>
	<44ffd3d1$0$27565$626a54ce@news.free.fr>
Message-ID: <1157618010.246530.286300@d34g2000cwd.googlegroups.com>


Bruno Desthuilliers wrote:
> Frank Millman wrote:
>
> This "replacement" happens at instance initialisation time - ie, after
> the class object have been created. If you don't want this to happen,
> either skip the call to Test.__init__ in Test2.__init__, or make this
> call with False as second param, or redefine getx2 in Test2. Or go for a
> saner design...
>

Thanks, Bruno, you gave me the clue to a less ugly workaround.

In my particular case, when I do subclass Test, y is always True.
Therefore I can rewrite it like this -

class Test2(Test):
    def __init__(self,x):
        Test.__init__(self,x,True)
    def getx2(self):
        print x*3

As you suggested, I redefine getx2 instead of getx, and it works as I
want.

Slightly less insane, I hope ;-)

Frank



From blair.houghton at gmail.com  Thu Sep 14 20:33:30 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 14 Sep 2006 17:33:30 -0700
Subject: best small database?
In-Reply-To: <mailman.65.1158218127.10491.python-list@python.org>
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>
	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
	<1158125595.442379.287900@e63g2000cwd.googlegroups.com>
	<mailman.3.1158126072.10491.python-list@python.org>
	<1158198592.409671.244610@h48g2000cwc.googlegroups.com>
	<mailman.65.1158218127.10491.python-list@python.org>
Message-ID: <1158280410.203128.129340@k70g2000cwa.googlegroups.com>


Fredrik Lundh wrote:
> Blair P. Houghton wrote:
> > I'm saying that the change from Oracle 9 to Oracle 10 is like changing
> > from ffs to fat32.
>
> well, I'm quite sure that the people I know who's spending a lot of
> their time moving stuff from Oracle N to Oracle N+1 (and sometimes
> getting stuck, due to incompatibilities between SQL and SQL and a lack
> of infinite resources) would say you're completely and utterly nuts.

Maybe they'd just be hyperbolic from the frustration.  Filesystems
/are/ databases, and incompatibilities /are/ incompatibilities.  And
without ANSI, the SQL problem could be like incompatibilities in C.
Not unheard-of.  Not at all.

--Blair



From claudio.grondi at freenet.de  Thu Sep  7 09:54:41 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 15:54:41 +0200
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <1157583791.744718.149580@m79g2000cwm.googlegroups.com>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
	<edn23m$s6$1@newsreader2.netcologne.de>
	<mailman.90.1157570501.5279.python-list@python.org>
	<ednc4f$ibl$1@newsreader2.netcologne.de>
	<1157583791.744718.149580@m79g2000cwm.googlegroups.com>
Message-ID: <edp8b0$21e$1@newsreader2.netcologne.de>

Super Spinner wrote:
> IronPython is a .NET language, so does that mean that it invokes the
> JIT before running actual code?  If so, then "simple short scripts"
> would take longer with IronPython "busy starting itself" loading .NET
> and invoking the JIT.  This effect would be less noticable, the longer
> the program is.  But I'm just guessing; I've not used IronPython.
> 
The time of loading IronPython seem to pay out at the end if the script 
takes a longer time to run, so you are most probably right. I am a bit 
surprised, that the difference is not that big (e.g. at least half the 
time) as I have expected from a JIT concept ... :

<code>
# import psyco
# psyco.full()

def arccot(x, unity):
     sum = xpower = unity // x
     n = 3
     sign = -1
     while 1:
         xpower = xpower // (x*x)
         term = xpower // n
         if not term:
             break
         sum += sign * term
         sign = -sign
         n += 2
     return sum

def pi(digits):
     print '  start of setting unity value ...',
     unity = 10**(digits + 10)
     print '  set unity value, starting arccot() ... ',
     pi = 4 * (4*arccot(5, unity) - arccot(239, unity))
     return pi // 10**10


f = file("pi-decimal-100000digits.out","wb")
f.write(str(pi(100000)))

print """
   PC:  Pentium 4,  2.8 GHz,  Windows XP SP2
   writing 100.000 digits of Pi to a file takes using:
     CPython 2.4.2  : 2 min 41 s (of CPU time)
     CPython+Psyco  : 2 min 45 s (of CPU time)
     IronPython 1.0 : 1 min 48 s (of CPU time)
"""
</code>

Claudio Grondi


From bertgoos at yahoo.com  Fri Sep 29 14:37:57 2006
From: bertgoos at yahoo.com (bertgoos at yahoo.com)
Date: 29 Sep 2006 11:37:57 -0700
Subject: Automatic methods in new-style classes
Message-ID: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>

Hey, I have the following code that has to send every command it
receives to a list of backends. Instead of:

class MultiBackend(object):
    """Renders to multiple backends"""

    def __init__(self, backends):
        self.backends = backends

    def flush(self):
        for b in self.backends:
            b.flush()

    def draw(self):
        for b in self.backends:
            b.draw()


I would like to write each method like:

    flush = multimethod()

Is that possible using new-style classes?

Bert



From python.sam at googlemail.com  Mon Sep 25 16:15:35 2006
From: python.sam at googlemail.com (sam)
Date: 25 Sep 2006 13:15:35 -0700
Subject: python interpreter on solaris 10
In-Reply-To: <1159213019.360006.123350@i3g2000cwc.googlegroups.com>
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
	<1159205234.213553.164990@e3g2000cwe.googlegroups.com>
	<1159206194.148219.176800@i42g2000cwa.googlegroups.com>
	<1159209873.808837.86460@d34g2000cwd.googlegroups.com>
	<1159213019.360006.123350@i3g2000cwc.googlegroups.com>
Message-ID: <1159215335.752422.310860@d34g2000cwd.googlegroups.com>



> I would try to use the python executable located in /usr/bin if it is
> exists, otherwise use the python executable in /usr/sfw/bin.
>
> casevh

lordy lord, is that where it was. i just found it now. i had been
thinking that idle was the name of the python interpreter, not just the
IDE, hence my emphasis on it. python itself is indeed just in
/usr/sfw/bin, as you said.

a thousand thanks. i've got it on command line now.



From g.brandl-nospam at gmx.net  Wed Sep 27 15:39:57 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 21:39:57 +0200
Subject: How to read() twice from file-like objects (and get some data)?
In-Reply-To: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>
References: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>
Message-ID: <efek2f$mbr$1@news.albasani.net>

askar.bektassov at gmail.com wrote:
> Hello all, please correct me, if I do...
> 
> from ClientForm import ParseResponse
> from urllib2 import urlopen
> ...
> response=urlopen(url)
> forms=ParseResponse(response)
> 
> I won't be able to
> 
> print response.read()
> 
> in order to see HTML source anymore. In other words I will see only an
> empty string. Suggestions?

response = urlopen(url)
content = response.read()

forms = ParseResponse(content)

i.e., adapt ParseResponse to accept a string, or wrap the string in a
StringIO:

import cStringIO
forms = ParseResponse(cStringIO.StringIO(content))

Georg


From raschulmanxx at verizon.net  Thu Sep  7 13:11:50 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Thu, 07 Sep 2006 17:11:50 GMT
Subject: Convert to big5 to unicode
References: <1157617674.982042.22970@i42g2000cwa.googlegroups.com>
Message-ID: <pek0g21isto8g5cl12g1s8vc62l863af0j@4ax.com>

On 7 Sep 2006 01:27:55 -0700, "GM" <garymok33 at gmail.com> wrote:

>Could you all give me some guide on how to convert my big5 string to
>unicode using python? I already knew that I might use cjkcodecs or
>python 2.4 but I still don't have idea on what exactly I should do.
>Please give me some sample code if you could. Thanks a lot

Gary, I used this Java program quite a few years ago to convert
various Big5 files to UTF-16. (Sorry it's Java not Python, but I'm a
very recent convert to the latter.) My newsgroup reader has messed the
formatting up somewhat. If this causes a problem, email me and I'll
send you the source directly.

-Richard Schulman

/*	This program converts an input file of one encoding format to
an output file of 
 *	another format. It will be mainly used to convert Big5 text
files to Unicode text files.
 */		  

import java.io.*;
public class ConvertEncoding
{	public static void	main(String[] args)
	{	String outfile =	null;
		try
		{	 convert(args[0], args[1],  "BIG5",
"UTF-16LE");
		}
		//	Or, at command line:
		//		convert(args[0], args[1], "GB2312",
"UTF8");
		//	or numerous variations thereon. Among possible
choices for input or output:
		//		"GB2312", "BIG5", "UTF8", "UTF-16LE".
The last named is MS UCS-2 format.
		//		I.e., "input file","output file",
"input encoding", "output encoding"
		catch (Exception	e)
		{	System.out.print(e.getMessage());
			System.exit(1);
		}
	 }

	public static void convert(String infile, String outfile,
String from, String to)	
		 throws IOException,	UnsupportedEncodingException
	{	// set up byte streams
		InputStream in;
		if (infile	!=	null)
		 	in = new FileInputStream(infile);
		else
			in = System.in;

		OutputStream out;
		if (outfile != null)
		 	out = new FileOutputStream(outfile);
		else
			out = System.out;

		 // Set up character stream
		Reader r =	new BufferedReader(new
InputStreamReader(in, from));
		Writer w =	new BufferedWriter(new
OutputStreamWriter(out, to));

		 w.write("\ufeff");	// This character signals
Unicode in the NT environment
		char[] buffer	= new char[4096];
		int len;
		while((len = r.read(buffer)) != -1) 
		w.write(buffer, 0, len);
		r.close();
		w.flush();
		w.close();
	}
}


From fredrik at pythonware.com  Wed Sep 27 01:32:55 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 07:32:55 +0200
Subject: What's up with site.Quitter?
In-Reply-To: <wGnSg.5103$TV3.118@newssvr21.news.prodigy.com>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>	<mailman.769.1159333097.10491.python-list@python.org>
	<wGnSg.5103$TV3.118@newssvr21.news.prodigy.com>
Message-ID: <efd2e7$4ui$1@sea.gmane.org>

James Stroud wrote:

> Yes, but I was speaking more consistency than convenience (see above for 
> what I mean by consistency).

why would having access to a type object for exit/quit help you do 
proper syntax coloring, btw?  if you want to generate a syntax table, 
wouldn't it be better to use things like

     issubclass(obj, Exception)

and

     callable(obj)

etc. ?

(__builtins__ is an implementation detail, btw; if you want a list of 
the builtins, import __builtin__ (no plural) and do dir on that).

</F>



From larry.bates at websafe.com  Mon Sep 11 10:04:13 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 09:04:13 -0500
Subject: inserting into a file
In-Reply-To: <mailman.248.1157978440.5279.python-list@python.org>
References: <mailman.248.1157978440.5279.python-list@python.org>
Message-ID: <RLGdnSQGast48ZjYnZ2dnUVZ_vmdnZ2d@comcast.com>

Sai Krishna M wrote:
> I want to insert a string in a file after a particular line.
> 
> I thought of using seek() function but on opening the file in append
> mode the seek value is undone.
> One crude idea i had was to read the file in a list and insert the
> string correspondingly.
> 
> Is there any other way to do this?
> Please help...
> 
> Sai krishna M
No "magic" way to insert lines.  If file is small, read into
memory, insert line, write to disk.  If it is large, read and
write lines to secondary file, insert line, read remaining lines,
delete old file and rename to new file.

-Larry Bates


From deets at nospam.web.de  Fri Sep 15 04:03:08 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 15 Sep 2006 10:03:08 +0200
Subject: Outbound port on sockets
In-Reply-To: <U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
Message-ID: <4mv51sF7t5lmU1@uni-berlin.de>

Bryan Olson schrieb:
> Diez B. Roggisch wrote:
>> bmearns schrieb:
>>> Is it possible to specify which port to use as the outbound port on a
>>> connection? 
> [...]
>>> Specifically, I'm trying to write an FTP host, and I'm trying to
>>> implement the PORT command. 
>>
>> AFAIK you neither can't do that nor need it.
> 
> It's not the issue here, but to specify the outgoing port
> call bind(('', portnum)) before connect().

I wasn't aware of that. Cool.

Diez


From fredrik at pythonware.com  Sun Sep 24 07:35:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 13:35:31 +0200
Subject: assignment hook
In-Reply-To: <ef5nok$vl1$1@news.albasani.net>
References: <1159055894.620401.181760@m7g2000cwm.googlegroups.com>
	<ef5nok$vl1$1@news.albasani.net>
Message-ID: <ef5qi2$3f7$1@sea.gmane.org>

Georg Brandl wrote:

> This is not possible. Assignments in the form
> 
> name = value
> 
> (also called "binding a name") are not overloadable.

footnote: unless you execute the code in a controlled environment:

     class mydict(dict):
         def __setitem__(self, key, value):
             print "SET", key, value
             self.__dict__[key] = value

     ns = mydict()

     exec "a = 10" in ns

</F>



From breakfastea at gmail.com  Thu Sep 21 10:09:47 2006
From: breakfastea at gmail.com (breakfastea at gmail.com)
Date: 21 Sep 2006 07:09:47 -0700
Subject: How to return an "not string' error in function?
Message-ID: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>

first of all I have to claim that I'm a noob so please help me don't
blame me:)

for example:

def test(s):
       if type(s) != ? :
          return
#So here I want establish a situation about that if <s> is not string
#then <return>, but how should write the <?> ?
#Or is there any other way to do it?

Any suggestion would be appreciate

Peace



From jon+usenet at unequivocal.co.uk  Mon Sep 25 10:05:26 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 14:05:26 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
Message-ID: <slrnehfogu.6tm.jon+usenet@snowy.squish.net>

In article <Xns984996E6BABCEduncanbooth at 127.0.0.1>, Duncan Booth wrote:
> It is generally a principle of Python that new releases maintain backward 
> compatability. An incompatible change such proposed here would probably 
> break many tests for a large number of people.

Why is the suggested change incompatible? What code would it break?
I agree that it would be a bad idea if it did indeed break backwards
compatibility - but it doesn't.

> There should be a one-stop shop where I can take my unicode text and 
> convert it into something I can safely insert into a generated html page; 

I disagree. I think that doing it in one is muddled thinking and
liable to lead to bugs. Why not keep your output as unicode until it
is ready to be output to the browser, and encode it as appropriate
then? Character encoding and character escaping are separate jobs with
separate requirements that are better off handled by separate code.


From wahab at chemie.uni-halle.de  Sat Sep 30 10:52:27 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Sat, 30 Sep 2006 16:52:27 +0200
Subject: builtin regular expressions?
In-Reply-To: <87k63ly1gi.fsf@gmail.com>
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
Message-ID: <efm0k6$lgg$1@mlucom4.urz.uni-halle.de>

Thus spoke Jorge Godoy (on 2006-09-30 14:37):
> Antoine De Groote <antoine at vo.lu> writes:
>> I'm sure there are good reasons, but I just don't see them.
>> Python Culture says: 'Explicit is better than implicit'. May it be related to
>> this?
> 
> See if this isn't better to read:
> 
> def print_message(some_str):
>     if some_str.startswith('track='):
>         print "Your track is", some_str[6:]
>     elif some_str.startswith('title='):
>         print "It's a title of", some_str[6:]
>     elif some_str.startswith('artist='):
>         print "It was played by", some_str[7:]
>     else:
>         print "Oops, I dunno the pattern for this line..."
>     return
> 
> for line in ['track="My favorite track"', 'title="My favorite song"',
>              'artist="Those Dudes"', 'Something else']:
>     print_message(line)

I don't see the point here, this example can be
translated amost 1:1 to Perl and gets much more
readable in the end, consider:


sub print_message {
   if   (/^(track=)/ ){ print 'Your track is '   .substr($_, length $1)."\n" }
   elsif(/^(title=)/ ){ print 'It\'s a title of '.substr($_, length $1)."\n" }
   elsif(/^(artist=)/){ print 'It was played by '.substr($_, length $1)."\n" }
   else               { print "Oops, I dunno the pattern for this line...\n" }
}

print_message for ( 'track="My favorite track"', 'title="My favorite song"',
                    'artist="Those Dudes"',      'Something else' );


Now one could argue if simple Regexes like
   /^track=/ are much worse compared to
more explicit formulations, like
   str.startswith('track=')

> I came from Perl and was used to think with regular expressions for
> everything.  Now I rarely use them.  They aren't needed to solve 
> most of the problems. 

OK, I do Perl and Python side by side and didn't reach
that point so far, maybe beause I read the Friedel-Book
 ( http://www.oreilly.com/catalog/regex2/reviews.html )
sometimes and actually *like* the concept of regular expressions.


Regards

Mirco


From tjreedy at udel.edu  Wed Sep 27 13:14:44 2006
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 27 Sep 2006 13:14:44 -0400
Subject: Surprise using the 'is' operator
References: <mailman.746.1159307893.10491.python-list@python.org>
	<451A9824.6040106@tobiah.org>
Message-ID: <efebi3$o85$1@sea.gmane.org>


"tobiah" <toby at tobiah.org> wrote in message 
news:451A9824.6040106 at tobiah.org...
> wesley chun wrote:
>>> "Terry Reedy" <tjr... at udel.edu> wrote:
>>> > as a side note, the ints that are cached (for current versions of
>>> > Python) are in range(-1, 100)... is this documented somewhere?
>>> Not true for at least 2.4 and 2.5.  The cached range has expanded

> I don't pretend to understand the reasons for all of this,
> but if it is possible to use the same integer object whenever
> it is referenced, then why should there be a limit on range?

Preallocating all the 4 billion 4-byte ints would overfill the memory of 
most machines ;-)

So there is a tradeoff between startup time, required minimal space usage 
by *every* program, needed or not, and runtime savings of time and space by 
programs that do make frequent use of 'small' ints.  The expansion from 99 
or 100 to 257 is partly a look ahead to a new 'bytes' type for 3.0 and 
maybe 2.x.

> Suppose I fill an list with 100 million random integers in the range
> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
> of '12345' pointed to the same integer object?

Yes

>  Why should more be made,
> when they all do the same thing, and are not subject to change?

Because such a situation is a special case and the delivered code is for 
everyone.  If you compile your own binary, you can change the #define XXX 
257 (where XXX is something obvious like MAX_SMALL_INT) in intobject.c to 
65535 to make a special-purpose binary for such a use as you describe.

Terry J. Reedy





From thorsten at thorstenkampe.de  Wed Sep 27 20:13:37 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Thu, 28 Sep 2006 01:13:37 +0100
Subject: optparse
References: <C6nSg.79$M31.50@newsfe05.lga>
	<mailman.768.1159332264.10491.python-list@python.org>
	<PXwSg.13718$vi3.2977@bignews3.bellsouth.net>
Message-ID: <MPG.1f85240a609d02d998968b@news.individual.de>

Don't top-post or other people will laugh at you and call you names...

* rick (Wed, 27 Sep 2006 11:40:40 -0400)
>OK, using that convention, how would I create help for <arg1>, <arg2>, etc.

Not possible. Use argparse.

Thorsten


From http  Tue Sep 26 22:13:00 2006
From: http (Paul Rubin)
Date: 26 Sep 2006 19:13:00 -0700
Subject: releasing memory to malloc
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
	<1159319835.249502.65220@i3g2000cwc.googlegroups.com>
	<1159321405.372826.60130@k70g2000cwa.googlegroups.com>
	<1159322459.473038.233090@m7g2000cwm.googlegroups.com>
Message-ID: <7xmz8mt5ub.fsf@ruckus.brouhaha.com>

    Is there any way to get Python to release memory back to the
    C allocator? I'm currently running a script that goes through
    the following steps:

    1) Creates a very large number of Python objects to produce
    a relatively small data structure that sits in a C extension.
    The Python objects consume quite a bit of memory.

    2) Releases all the Python objects.

    3) Invokes a function of said C extension for further
    processing. This step needs as much memory as possible.
    ...

   I happen to have the code for the C library in question, but I
   don't think this is the way to go in general.  If there's a way to
   get Python to give memory back to the C allocator I can avoid
   touching the library at all.

A cave-man approach might be to fork a new process after step 1, pass
the small data structure to it, and have the old process exit
(releasing all its memory back to the OS).  The new process then
carries out the remaining steps.


From jjl at pobox.com  Tue Sep 19 14:35:08 2006
From: jjl at pobox.com (John J. Lee)
Date: 19 Sep 2006 19:35:08 +0100
Subject: Mechanoid Web Browser - Recording Capability
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
	<878xkjxrs2.fsf@pobox.com>
	<1158542822.685166.317930@i42g2000cwa.googlegroups.com>
Message-ID: <ulkof3dsz.fsf@pobox.com>

"Seymour" <seymour.morris at gmail.com> writes:
[...]
> one program, MaxQ, that records web surfing.  It seems to work great.
[...]

There are lots of such programs about (ISTR twill used to use MaxQ for
its recording feature, but I think Titus got rid of it in favour of
his own code, for some reason).  How useful they are depends on the
details of what you're doing: the information that goes across HTTP is
on a fairly low level, so e.g., most obviously, you may need to be
sending a session ID that varies per-request.  Those programs usually
have some way of dealing with that specific problem, but you may run
into other problems that have the same origin.  Don't let me put you
off it gets your job done, but it's good to be a bit wary: All current
web-scraping approaches using free software suck in one way or
another.


John



From steve at REMOVEME.cybersource.com.au  Tue Sep 26 00:56:11 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Tue, 26 Sep 2006 14:56:11 +1000
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<ef8cg8$fui$3@lust.ihug.co.nz>
Message-ID: <pan.2006.09.26.04.56.11.74474@REMOVEME.cybersource.com.au>

On Mon, 25 Sep 2006 22:54:58 +1200, Lawrence D'Oliveiro wrote:

> In message <1158951061.539594.164040 at i3g2000cwc.googlegroups.com>, T wrote:
> 
>> We all know that there are many softwares that require some license key
>> or registration key to enable them.  How does one implement something
>> like this in python?
> 
> Reliably? Can't be done, in Python or any other language.

Of course it can -- you can rely on it to be cracked.

Oh the other hand, for some uses, a partial success is better than none at
all. (Personally, I don't believe that registration keys are necessarily
one of those, but that's not up to me to decide.)



-- 
Steven D'Aprano 



From knipknap at gmail.com  Mon Sep 18 13:56:42 2006
From: knipknap at gmail.com (Samuel)
Date: 18 Sep 2006 10:56:42 -0700
Subject: Creating database structures in a portable way
In-Reply-To: <450ec289$0$1804$636a55ce@news.free.fr>
References: <1158594419.579160.194570@m73g2000cwd.googlegroups.com>
	<450ec289$0$1804$636a55ce@news.free.fr>
Message-ID: <1158602201.926509.228420@k70g2000cwa.googlegroups.com>

> FWIW, there's a Python port of adodb:
> http://phplens.com/lens/adodb/adodb-py-docs.htm
>
> and parsing XML in Python is quite easy. So you could as well port the
> AdoDB XML to Python too.

That is exactly what I am trying to avoid. While implementing the
parser might be easy, you have to translate things into different
database flavors, caring about a bunch of things that I'd rather not
have to think about.

> OTOH, there are other - possibly better (YMMV) - DB abstraction layers
> in Python, like SQLAlchemy.

SQLAlchemy looks pretty good, but unfortunately apparently requires
shell access for installation (or at least, I have not found any other
solution covered in the docs), which I can not use. I need a solution
that can be shipped in a software package, and installed by simply
copying it to the server.

> And since the above solution requires
> (re)writing the xml-parsing part, it might be worth rewriting it so it
> knows how to generate SQLAlchemy schemas instead.

Rewriting the schema is possible (I only want to keep it separated from
the code), so using SQLAlchemy's built in solution for generating
tables seems just fine. It's only the installation part.

Anyway, I am wondering; Python seems to include database adapters for
almost any important database, all with a unified API. Why would you
need another database abstraction on top of that?

Thanks,
-Samuel



From george.sakkis at gmail.com  Tue Sep 19 22:16:15 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 19 Sep 2006 19:16:15 -0700
Subject: newbe's re question
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
Message-ID: <1158718575.499145.58090@h48g2000cwc.googlegroups.com>

Eric_Dexter at msn.com wrote:

> All I am after realy is to change this
>
>  reline = re.line.split('instr', '/d$')

If you think this is the only problem in your code, think again; almost
every other line has an error or an unpythonic idiom. Have you read any
tutorial or sample code before typing this python-like pseudocode ?

George



From onurb at xiludom.gro  Fri Sep  8 06:54:09 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 08 Sep 2006 12:54:09 +0200
Subject: Request for tips on my first python script.
In-Reply-To: <mailman.148.1157679775.5279.python-list@python.org>
References: <mailman.148.1157679775.5279.python-list@python.org>
Message-ID: <45014bd2$0$11377$636a55ce@news.free.fr>

Lex Hider wrote:
> Hi,
> Apologies if this is against etiquette. I've just got my first python app up 
> and running. It is a podcast aggregator depending on feedparser. I've really 
> only learnt enough to get this up and running.
> 
> Any tips on the code quality and use of python would be appreciated. I've got 
> a feeling the overall structure is up the creek.
> approx 220 LOC.
> file: GodCast.py
> 
> #!/usr/bin/python
(snip)
> # TODO: not found log
http://docs.python.org/lib/module-logging.html

> # TODO:
> # config file
http://docs.python.org/lib/module-ConfigParser.html

> # opml feed list?
> # pygtk/pyqt/qtkde gui?
> 
> # possible flags: test, print but don't actual do anything

http://docs.python.org/lib/module-optparse.html

> import re, feedparser, os, sys, shutil, time, getopt
> import urllib2
> import urllib
> import md5
> 
> boz = ""
> HOME = os.path.expanduser("~")
> # user configurable
> #maxChecksPerDay = 8
> #maxChecksPerDay = 12
> maxChecksPerDay = 24
> myTemp = '/tmp'

http://docs.python.org/lib/module-tempfile.html

BTW, note that the most common naming convention in Python is
all_lower_with_underscore (except for ClasseName).

> #podDir = os.path.join(HOME, 'Audio/Podcasts')
> podDir = os.path.join(HOME, 'Podcasts')
> # end user configurable
> downDir = os.path.join(myTemp, 'Podcasts')
> dotDir = os.path.join(HOME, '.aGodCast')
> logFile = os.path.join(dotDir, 'log') #list of downloaded urls
> cacheDir = os.path.join(dotDir, 'cache')
> ignoreNotFound = False # if true, add files not found to log
> # list of feeds, ignore lines not beginning ^http
> feedList = os.path.join(dotDir, 'feeds.txt')
> 
> 
> def exitFunc():
>     #f.close()
>     #log.close()
>     if boz:
>         print boz
> 
> 
> def makeDirs(*dirs):
>     for dir in dirs:
>         if not os.path.exists(dir):
>             os.makedirs(dir)
> 
> 
> # render is used because feeds use a lot of html, not just plain text.
> def render(html):
>     if html:
>         html = re.sub('"', '\\"', html.encode('utf8'))
>         #command = 'echo "' + html + '" | w3m -dump -T text/html'
>         #command = 'echo "' + html + '" | html2text'
>         command = 'echo "' + html + '" | lynx -dump -stdin -force_html'

another way :
command = 'echo "%s" | lynx -dump -stdin -force_html' % html

>         os.system(command)
> 
> 
> def localMD5(url):
>     hash = md5.new(url).hexdigest() + '.xml' #unique name from url
>     return os.path.join(cacheDir, hash)
> 
> 
> def cache(url):
>     max  = 60 * 60 * 24 / maxChecksPerDay #seconds
>     myfile = localMD5(url)
>     if os.path.isfile(myfile):
>         elapsed = int(time.time()) - os.path.getmtime(myfile)
>         if elapsed <= max:
>             return
>     print "FETCHING:", url + ' ...'

Note that stdout is usually meant for normal program outputs (so one can
pipe programs). Error reporting and verbosities should go to stderr

>     urllib.urlretrieve(url, myfile)
>     # handle half finish?
> 
> 
> def updateCache(feeds):
>     l = []
>     print "updating local xml cache..."
>     for feed in file(feeds, "r").read().split('\n'):
>         if not re.match('^http://', feed): # feedList ignores anything but 
> urls
>             continue
>         # TODO: handle whitespace, strip trailing
>         cache(feed)
>         l.append([localMD5(feed), feed])
>     print "cache up to date"
>     return l
> 
> 
> def geturl(url):
>     try:
>         redir =  urllib2.urlopen(url).geturl()
>     except urllib2.HTTPError, e:
>         if e.code != 404:
>             print url
>             print "geturl HTTPError:", e.code
>         return e.code
>     except urllib2.URLError, e:
>         # (110, 'Connection timed out')
>         print e.reason
>         #print "geturl URLError:", e.code
>     else:
>         return redir
>     return 0

I'm afraid you didn't get the point of exception handling - it's meant
to free function results from error code. Your above code totally
defeats this - as is obvious when reading the calling code.

>             redirect = geturl(url) # TRAFFIC
>             if type(redirect) != int: #success
                 do_something_useful_here()
>             elif redirect == 404:
>                 print 'NOT FOUND:', url
>                 if ignoreNotFound:
>                     print '\tWILL NO LONGER ATTEMPT TO DOWNLOAD\n'
>                     log(url)
>             else:
>                 sys.exit(2)

may I suggest a rewrite :

  try:
    redirect =  urllib2.urlopen(url).geturl()
  except urllib2.HTTPError, e:
    if e.code == 404:
      print 'NOT FOUND:', url
      if ignoreNotFound:
        print '\tWILL NO LONGER ATTEMPT TO DOWNLOAD\n'
        log(url)
    else:
      print "geturl HTTPError %s on url %s" % (e.code, url)
      raise
  except urllib2.URLError, e:
    print "geturl URLError %s on url %s" % (e.reason, url)
 else:
   do_something_useful_here()


> def htmlTitle(mainTitle, subTitle):
>     s = '<HR>'
>     s += '<H2>' + mainTitle + '</H2>'
>     s += '<H3>' + subTitle + '</H3>'
>     return s

html_title_template = """
<hr>
<h2>%(title)s</h2>
<h3>%(subtitle)s</h3>
"""

def html_title(title, subtitle):
  return html_title_template % dict(title=title, subtitle=subtitle)

> 
> def downloadPod(url, dest):
>     kb = 2
>     success = 0
>     command = 'wget --continue -O "' + dest + '" "' + url + '"'
command = 'wget --continue -0 "%s" "%s"' % (dest, url)
>     status  =  os.system(command)
>     if status == success:
>         return True
>     else:
>         print "\nWGET:", status
>         if status == kb:
>             pass
>             #raise KeyboardInterrupt
>         return False
> 
> 
> def downloadQueue(q, latest):
>     for x in range(latest):
>         for [feedTitle, castList] in q:
          for feedTitle, castList in q:
>             if not len(castList) > x:

double negations are harder to grasp:
              if len(castList) <= x

>                 continue

I'm not sure to get what you're doing here....

>             cast = castList[x]
>             if cast is None:
>                 continue
>             url = cast.enclosures[0]['href']
>             redirect = geturl(url) # TRAFFIC
>             if type(redirect) != int: #success
>                 render(htmlTitle(feedTitle + ": #" + str(x+1), cast.title))
>                 render(cast.description)

Mixing logic and UI is usually a very bad idea IMHO.

>                 podFile = os.path.basename(redirect).split('?')[0]
>                 permDir = os.path.join(podDir, feedTitle)
>                 permFile = os.path.join(permDir, podFile)
>                 tempDir = os.path.join(downDir, feedTitle)
>                 tempFile =  os.path.join(tempDir, podFile)
>                 if not os.path.isfile(permFile):
>                     makeDirs(tempDir, permDir)
>                     if downloadPod(redirect, tempFile): # TRAFFIC
>                         shutil.move(tempFile, permFile)
>                         log(url)
>                     else:
>                         print "EXITING"
>                         sys.exit(2)

This will make this function hard to use in a different context (like ie
a mod_apache handler, a GUI, etc... You'd better raise some specific
exception and let the caller handle it.

(snip)


> 
> def log(url):
>     file(logFile, 'a').write(url + "\n")

> 
> def main(args):
>     sys.exitfunc = exitFunc
>     makeDirs(dotDir, podDir, downDir, cacheDir)
>     #make file if doesn't exist, may be better solution?
yes : using the logging module

>     X = file(logFile, 'a')
>     latest = 13 #get the first x casts for each feed

>     try:
>         opts, args = getopt.getopt(sys.argv[1:], "l:", 
> ["latest=", "notfound"])
>     except getopt.GetoptError:          
>         sys.exit(2)                     
>         #usage()                         
>     
>     for opt, arg in opts:
>         if opt in ("-l", "--latest"):
>             latest = int(arg)
>         elif opt in ("--notfound"):
>             ignoreNotFound = True #add notfound files to log 

OMG. optparse is far better than this.

(snip)

My overall feeling is that in most function, you're mixing too much
different concerns. Each function should do *one* thing (and do it
well). The most obvious problem here is about mixing application logic
and UI. Application logic (what your app is effectively doing) should be
as independant as possible of UI concerns. If possible, you should be
able to reuse most of the application logic (except for the main() func,
which in your case is the command-line UI) as a module in other
applications. Now there are time when the application code needs to
notify the UI. The good news is that Python makes it easy to makes this
generic, using callback functions or objects provided by the UI and
called when appropriate by the application logic. The key here is to
come up with a clear, well-defined interface between logic code and UI code.

A last point : avoid globals whenever possible. Either pass values as
arguments to functions or use a kind of config object if there are too
much configuration stuff.

My 2 cents
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From fredrik at pythonware.com  Mon Sep 25 13:43:01 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 19:43:01 +0200
Subject: Talking to marketing people about Python
In-Reply-To: <1159205875.573485.19930@i3g2000cwc.googlegroups.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<1159205875.573485.19930@i3g2000cwc.googlegroups.com>
Message-ID: <ef94f5$ka5$1@sea.gmane.org>

codefire wrote:

> I think Google also gives a pretty big endorsement of Python (as you
> wanted the marketing angle).

or, depending on what part of the IT ecosystem you spend most of your 
time in, Microsoft (IronPython).

</F>



From jantod at gmail.com  Fri Sep 15 10:50:46 2006
From: jantod at gmail.com (Janto Dreijer)
Date: 15 Sep 2006 07:50:46 -0700
Subject: UDP packets to PC behind NAT
In-Reply-To: <12glehhtpl7tf20@corp.supernews.com>
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<450a6ba9$0$31654$626a54ce@news.free.fr>
	<12glehhtpl7tf20@corp.supernews.com>
Message-ID: <1158331846.750789.316460@b28g2000cwb.googlegroups.com>

Grant Edwards wrote:
> On 2006-09-15, Christophe <chris.cavalaria at free.fr> wrote:
>
> > Initiate an UDP connection from the client to the server and
> > have the server send back the UDP packets to the address you
> > get in the "recvfrom" result.
>
> There's no such thing as a "UDP connection", so I don't
> understand what you're suggesting.

I think he means "connection" as in "associated ip/port". Which
actually does work, as I've posted.



From fredrik at pythonware.com  Tue Sep 26 03:36:35 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 09:36:35 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efakif$idf$1@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>	<efaj9p$fqq$2@lust.ihug.co.nz>
	<efakif$idf$1@lust.ihug.co.nz>
Message-ID: <efala4$212$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

 > Kind of defeats the point of having SQL, but there you go...

there are plenty of reasons to use Python data structures instead of the 
SQL engine for data crunching.  especially if you care about efficiency.

</F>



From fakeaddress at nowhere.org  Fri Sep 22 10:35:49 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 22 Sep 2006 14:35:49 GMT
Subject: Python 2.5 WinXP AMD64
In-Reply-To: <4nfrhbFa4kbiU1@individual.net>
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
	<4nfrhbFa4kbiU1@individual.net>
Message-ID: <9xSQg.3515$vJ2.2333@newssvr12.news.prodigy.com>

Bjoern Schliessmann wrote:
> Christophe wrote:
> 
>> To be exact, you need a 64bit Windows OS on a 64bit cpu.
> 
> Is there a reason that can be explained in a less-than-2-KB
> posting? :) I mean why Python depends on the processor type that
> much.

The 64-bit version of Python is compiled for 64-bit processors.
32-bit processors don't work the same and won't run the code.

The O.P. has a 64-bit Athlon processor, but is running a 32-bit
OS. The processor emulates its 32-bit predecessor in "legacy
mode", so 32-bit software runs.

Given a 64-bit processor, why can't 64-bit applications run
under a 32-bit Operating System? Because the O.S. provides
the environment in which the application runs. There are
several problems: system calls could be probably be thunked
by a library, but the virtual memory space is a deal breaker.
A 32-bit O.S. deals with 32-bit addresses; it can't support
the address space of a 64-bit app.

Running a 32-bit O.S., the processor stays in 32-bit legacy
mode. Enabling the processor's 64-bit mode is a privileged
operation; the application cannot do it.


Incidentally, the other direction works pretty well: a
64-bit operating system can run 32-bit applications. The
AMD64 architecture, also adopted by Intel, has a
"compatibility mode" for creating 32-bit virtual address
spaces within the native 64-bit address space.

I'm close to the 2KB.
For more, search on "AMD64 Architecture".


-- 
--Bryan


From david at boddie.org.uk  Wed Sep  6 09:53:17 2006
From: david at boddie.org.uk (David Boddie)
Date: 6 Sep 2006 06:53:17 -0700
Subject: any portable way to print? (and i mean on a printer)
References: <93fc17a50609051509k50fdb2f2j4aefcf4e69a8f4c8@mail.gmail.com>
	<mailman.64.1157529616.5279.python-list@python.org>
Message-ID: <1157550796.328747.241050@e3g2000cwe.googlegroups.com>

Steve Holden wrote:
> Liquid Snake wrote:
> > I think my question is clear.., is there any way to print any text on a
> > portable way?..., and actually, i don't know how to print at all.., just
> > give me some pointers, name a module, and i can investigate for myself..
> > sorry for my english, thanks in advance..
> > ps: i prefer a Standard Library module.

> No, there is no way to print any text (did yo also want to print
> graphics?) portably (by which I mean a way that will work on Windows,
> Linux, Solaris, HP-UX, AIX, ...).

Well, that's not quite true, Steve. Python bindings for various
cross-platform frameworks should manage this quite well, depending
on what the original poster meant by text. PyQt4, for example,
provides classes that let you print to native printers on Linux,
Mac OS X, Windows and various other Unix platforms:

  http://www.riverbankcomputing.co.uk/pyqt/

However, the original poster did specify a preference for a standard
library module, so your answer is probably correct within that
context. :-)

If the printer was a network printer, there might be some more options
to explore. I think there's potential for a pure Python solution to
this problem to be added to the desktop module:

  http://cheeseshop.python.org/pypi/desktop/

David



From torerik81 at gmail.com  Wed Sep 13 11:27:50 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Wed, 13 Sep 2006 17:27:50 +0200
Subject: Windows bandwidth monitor
In-Reply-To: <1158160252.697595.123300@p79g2000cwp.googlegroups.com>
References: <1158160252.697595.123300@p79g2000cwp.googlegroups.com>
Message-ID: <ee981o$2n7$1@news.uit.no>

RunLevelZero wrote:
> Hey guys, I've done some searching but can't seem to find anything that
> helps me out. I want to write a simple bandwidth monitor that will sit
> in the taskbar of windows and tell me my upload and download speeds. I
> intend to use wxpython for the little taskbar icon. If anyone can give
> me a helping hand I would be more than appreciative.
> 
> Thanks
> 

For the monitoring part, google "win32pdh"


From ilias at lazaridis.com  Fri Sep 22 10:50:36 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Fri, 22 Sep 2006 17:50:36 +0300
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <mailman.452.1158926374.10491.python-list@python.org>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
	<mailman.452.1158926374.10491.python-list@python.org>
Message-ID: <ef0t7p$9k6$1@mouse.otenet.gr>

Ben Finney wrote:
> "Ilias Lazaridis" <ilias at lazaridis.com> writes:
> 
>> Where can I find _compact_ documentation about
> 
> Can you tell us what is lacking about the documentation at
> <URL:http://www.python.org/doc/> ? Specifically, what problems have
> you found in understanding these topics from the documentation
> available at that site?

Of course:

"
Unifying types and classes in Python 2.2

Python Version: 2.2.3

Guido van Rossum

This paper is an incomplete draft. I am soliciting feedback. If you find 
any problems, please write me at guido at python.org.
"
http://www.python.org/download/releases/2.2.3/descrintro/

-

Weaknesses:

* draft version
* written by the system designer
* size
* code examples uncolored
* code examples missaligned

-

I've looking for a _compact_ analysis of this topic, prefered in 
standard OO jargon. Around 100 lines and 1 diagramm (or 500 lines and 3 
diagramms, but not more).

.

-- 
http://lazaridis.com


From wildemar at freakmail.de  Thu Sep 21 00:50:44 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 06:50:44 +0200
Subject: naming objects from string
In-Reply-To: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
Message-ID: <45121A24.6080107@freakmail.de>

manstey wrote:
> If I have a string, how can I give that string name to a python object,
> such as a tuple.
> 
> e.g.
> 
> a = 'hello'
> b=(1234)
> 
> and then a function
> name(b) = a
> 
> which would mean:
> hello=(1234)
> 
> is this possible?
> 

Direct answer:
Look up the setattr() functions (DO look it up!). Replace your
name(b) = a line with
setattr(__builtins__, a, b).
There you go.


Hopefully more helpful answer:
One alternative would be using a dictionary. Your example would then 
translate to:

a = 'hello'
b = (1234,) # notice the comma!
             # without it, it wouldn't be a tuple but a simple
             # parenthesized integer
d = {} # your dictionary

d[a] = b  # assign the value of b to a key given by a

d[a]
 >>> (1234,)

d['hello']
 >>> (1234,)

In most cases this will be a LOT less cumbersome compared to messing 
with module attributes.

hope that helps a bit
wildemar


From mystilleef at gmail.com  Mon Sep 18 12:26:49 2006
From: mystilleef at gmail.com (mystilleef)
Date: 18 Sep 2006 09:26:49 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<1158235392.623992.138340@i42g2000cwa.googlegroups.com>
	<7xy7siva9z.fsf@ruckus.brouhaha.com>
Message-ID: <1158596809.724571.172130@i3g2000cwc.googlegroups.com>

Paul Rubin wrote:
> "mystilleef" <mystilleef at gmail.com> writes:
> > I use D-Bus (Python). I recommend it. I don't know how cross platform
> > it is. However, it supports message passing of most built-in (strings,
> > ints, lists, dictionaries etc) Python objects accross processes. You
> > can mimick clean Erlang-like concurrency with it. It is the future of
> > IPC on Desktop Unix. Given Python's crippled threading implementation,
> > it can play a role in making your Python applications scalable, with
> > regards to concurrency. I am recommending D-Bus because I have used it,
> > and I know it works. I didn't read this of a newsgroup or mailing list.
>
> It looks useful, but as far as I can tell, it's just another IPC
> thingie that works through sockets, sort of like pyro without the
> remote objects.  I don't see how it's related to Erlang-like
> concurrency (which means ultralightweight coroutines, not heavyweight
> Unix or Windows processes).  I think Python concurrency schemes get
> interesting when they at least share memory (like POSH).  Otherwise I
> think of them more as "distributed" than "concurrent".

What is revolutionary about Erlang's concurrency model isn't exactly
its light weight threads (Python already has a frame work that
implements something similar) but the fact that in Erlang each thread
behaves like a process and each thread communicates with each other via
message passing. In Erlang, threads do not share state information. So
all the limitations associated with concurrent programming in other
mainstream languages are absent in Erlang. Because threads behave like
processes and do not share state, Erlang allows you to create thousands
of threads easily without the drawbacks of thread locks. Each thread or
process manages its own state. Erlang then provides a protocol to allow
each thread to communicate with each other.

You can mimic this concept with a light weight event based IPC like
D-Bus. D-Bus supports message passing and signals. It also provides you
with an easy protocol that allows processes to talk to each other. You
are right when you say that D-Bus uses heavy processes while Erlang
uses light ones. But the robustness and scalability of Erlang's
concurrency model stems from the fact that Erlang's threads are not
really threads, but light weight processes that do not share state
information. In brief, Erlang's concurrency model is basically IPC
programming with light-weight processes. This is what I say you can
mimic with D-Bus albeit, unfortunately, with heavy-weight processes.



From apardon at forel.vub.ac.be  Wed Sep 13 06:49:48 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 13 Sep 2006 10:49:48 GMT
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
	<4mq4h5F76akiU1@uni-berlin.de>
Message-ID: <slrnegfoic.f0c.apardon@rcpc42.vub.ac.be>

On 2006-09-13, Diez B. Roggisch <deets at nospam.web.de> wrote:
>>> Exactly how am I supposed to use my text editor to make words bold? Is
>>> every text editor supposed to understand a "python format" for code?
>> 
>> The standard answer here to people complaining about their editor not
>> working well with python is that they should use a better editor.
>
> In general, that is true for the 21st century. But under certain
> circumstances, one might be forced to use a vi over a limited b/w terminal
> to fix that goddamn bug on the live system.

AFAIR, even those terminals had a form of highlighting. And personnaly
I would think PEP 0263 would be potentially more annoying than this
idea in those circumstances.

> Even though you don't care about the pesky details, it boils down to
> introducing an escape mechanism that will surround whatever identifiers
> there are. Which looks crap in anything except and python-aware editor. 
>
> But I bet you don't work with e.g. subversion to display diffs and the
> like...

I wouldn't be surprised that looking at diffs from files that use
PEP 0263 could look like crap too. Yes some decisions can cause 
some tools to be less usefull. I would say that the right cause
of action is then to adapt those tools. Not to let something like
that stop your decision.

-- 
Antoon Pardon


From http  Fri Sep 22 07:10:13 2006
From: http (Paul Rubin)
Date: 22 Sep 2006 04:10:13 -0700
Subject: byte count unicode string
References: <mailman.356.1158792857.10491.python-list@python.org>
Message-ID: <7x4pv0tawa.fsf@ruckus.brouhaha.com>

willie <willie at jamots.com> writes:

>  >>> ustr = buf.decode('UTF-8')
>  >>> type(ustr)
> <type 'unicode'>
> Is it a "unicode object that contains a UTF-8 encoded
> string object?"

No, it's just unicode, which is a string over a certain character set.
UTF-8 is a way to encode unicode strings as byte strings.

You should read the wikipedia article about unicode, it will help you
understand.

http://en.wikipedia.org/wiki/Unicode


From zeng at adobe.com  Mon Sep 18 12:44:46 2006
From: zeng at adobe.com (Ted Zeng)
Date: Mon, 18 Sep 2006 09:44:46 -0700
Subject: Could not build MySQLdb on PowerMac (PPC)
In-Reply-To: <1158596809.724571.172130@i3g2000cwc.googlegroups.com>
Message-ID: <454FD769B559DD4BAC93B2CCA7BEBDBE0121C760@namail2.corp.adobe.com>

Hi,

I am new to Python. I am trying to build MySQLdb for my PowerPC
PowerMac.
I just downloaded the source last week and tried to build it.
But I got the error messages as follow. I checked and there is no such
files as 
mysql_config
mysql.h
my_config.h
...

Did I download the wrong source?

python setup.py build

sh: line 1: mysql_config: command not found
...(same as above for a few lines)
running build
running build_py
copying MySQLdb/release.py -> build/lib.macosx-10.4-fat-2.4/MySQLdb
running build_ext
building '_mysql' extension
gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk
-fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd
-fno-common -dynamic -DNDEBUG -g -O3
-I/Library/Frameworks/Python.framework/Versions/2.4/include/python2.4 -c
_mysql.c -o build/temp.macosx-10.4-fat-2.4/_mysql.o
-Dversion_info="(1,2,1,'final',2)" -D__version__="1.2.1_p2"
_mysql.c:39:19:_mysql.c:39:19: error: mysql.h: No such file or directory
_mysql.c:40:23: error: my_config.h: No such file or directory
_mysql.c:41:26: error: mysqld_error.h: No such file or directory
_mysql.c:42:20: error:  error: mysql.h: No such file or directory
_mysql.c:40:23: error: my_config.h: No such file or directory
errmsg.h: No such file or directory
_mysql.c:41:26:_mysql.c:72: error: parse error before 'MYSQL'
_mysql.c:72: warning: no semicolon at end of struct or union
_mysql.c:75: error: parse error before '}' token
_mysql.c:75: warning: data definition has no type or storage class
_mysql.c:86: error: parse error before 'MYSQL_RES'


Ted Zeng
Adobe Systems Incorporated


From skip at pobox.com  Tue Sep  5 13:09:15 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 12:09:15 -0500
Subject: threading support in python
In-Reply-To: <edk5ab$eoc$1@south.jnrs.ja.net>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<7xejuqhh94.fsf@ruckus.brouhaha.com>
	<mailman.20.1157468962.5279.python-list@python.org>
	<edk5ab$eoc$1@south.jnrs.ja.net>
Message-ID: <17661.44859.918849.191154@montanaro.dyndns.org>


    Richard> It would probably be easier to find smarter friends than to
    Richard> remove the GIL from Python.

And if the friends you find are smart enough, they can remove the GIL for
you!

Skip


From onurb at xiludom.gro  Fri Sep 29 04:18:03 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 29 Sep 2006 10:18:03 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <xn2Tg.353$Lv3.140@newsread1.news.pas.earthlink.net>
References: <mailman.1984.1159445104.10490.python-list@python.org>
	<mailman.878.1159449832.10491.python-list@python.org>
	<1159475984.109684.227700@h48g2000cwc.googlegroups.com>
	<1159503458.273771.24310@m73g2000cwd.googlegroups.com>
	<xn2Tg.353$Lv3.140@newsread1.news.pas.earthlink.net>
Message-ID: <451cd6bb$0$3105$636a55ce@news.free.fr>

Dennis Lee Bieber wrote:
> On 28 Sep 2006 21:17:38 -0700, "MonkeeSage" <MonkeeSage at gmail.com>
> declaimed the following in comp.lang.python:
> 
> 	(Coming in from the cold)
>> I guess you were talking about implementing the _structure_ of lisp
>> lists in python syntax (as you seem to imply), not trying to emulate
> 
> 	Well.... The subject line does refer "data structures" <G>

Noticed that too ?-)

> 	Though if this suddenly inspires the creation of a Common LISP
> interpreter written in Python, I may want to close my eyes <G>

Well... Not quite Common Lisp yet, but :
http://www.biostat.wisc.edu/~annis/creations/PyLisp/


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From andi.clemens at gmx.net  Tue Sep 26 01:21:59 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Tue, 26 Sep 2006 07:21:59 +0200
Subject: Logfile analysing with pyparsing
Message-ID: <efadbv$gq7$1@online.de>

Hi,

we had some problems in the last weeks with our mailserver.
Some messages were not delivered and we wanted to know why.
But looking through the logfile is a time consuming process.
So I wanted to write a parser to analyse the logs and parse them as XML.

But I have never written a parser before and know I'm sitting in front 
of the logfile trying to write the grammar for pyparsing.

First of all I need to know if it is possible to parse that kind of info 
into XML.
Here is an excerpt of the logfile lines I'm interested in:

Sep 18 04:15:22 mailrelay postfix/cleanup[12103]: 755387301: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:22 mailrelay spamd[1364]: spamd: processing message 
<200609180214.k8I2EuNo016264 at mforward2.dtag.de> for nobody:65534
Sep 18 04:15:25 mailrelay spamd[1364]: spamd: result: Y 15 - 
BAYES_99,DATE_IN_PAST_03_06,DNS_FROM_RFC_ABUSE,DNS_FROM_RFC_DSN,DNS_FROM_RFC_POST,DNS_FROM_RFC_WHOIS,FORGED_MUA_OUTLOOK,SPF_SOFTFAIL 
scantime=3.1,size=8086,user=nobody,uid=65534,required_score=5.0,rhost=localhost,raddr=127.0.0.1,rport=55277,mid=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>,bayes=1,autolearn=no 

Sep 18 04:15:25 mailrelay postfix/cleanup[12074]: DA1431965E: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:26 mailrelay postfix/cleanup[13057]: EF90720AD: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:26 mailrelay postfix/smtp[10879]: EF90720AD: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=10.49.0.7[10.49.0.7], 
delay=1, status=sent (250 2.6.0 
<200609180214.k8I2EuNo016264 at mforward2.dtag.de> Queued mail for delivery)

They are filtered by "message-id", so all these lines above have 
something to do with the message 
"200609180214.k8I2EuNo016264 at mforward2.dtag.de".

The original logfile is about 25 MB big, so I can't post all of the 
lines of course ;-)

Looking at these lines I realized that there are "Queue IDs":
755387301
DA1431965E
EF90720AD

Filtering the log for these IDs results in the following lines:

Sep 18 02:15:11 mailrelay postfix/smtpd[10841]: 755387301: 
client=unknown[194.25.242.123]
Sep 18 04:15:22 mailrelay postfix/cleanup[12103]: 755387301: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:22 mailrelay postfix/qmgr[11082]: 755387301: 
from=<sender at mail.net.mx>, size=8152, nrcpt=7 (queue active)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver1 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver2 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver3 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/pipe[11659]: 755387301: 
to=<receiver4 at mail.com>, relay=procmail, delay=14, status=sent (filter)
Sep 18 04:15:25 mailrelay postfix/qmgr[11082]: 755387301: removed

Sep 18 04:15:25 mailrelay postfix/pickup[13175]: DA1431965E: uid=65534 
from=<nobody>
Sep 18 04:15:25 mailrelay postfix/cleanup[12074]: DA1431965E: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:25 mailrelay postfix/qmgr[11082]: DA1431965E: 
from=<nobody at OUR-MAILSERVER.mail.com>, size=11074, nrcpt=1 (queue active)
Sep 18 04:15:26 mailrelay postfix/smtp[11703]: DA1431965E: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=localhost[127.0.0.1], 
delay=1, status=sent (250 Ok: queued as EF90720AD)
Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: DA1431965E: removed

Sep 18 04:15:25 mailrelay postfix/smtpd[11704]: EF90720AD: 
client=localhost[127.0.0.1]
Sep 18 04:15:26 mailrelay postfix/cleanup[13057]: EF90720AD: 
message-id=<200609180214.k8I2EuNo016264 at mforward2.dtag.de>
Sep 18 04:15:26 mailrelay postfix/smtp[11703]: DA1431965E: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=localhost[127.0.0.1], 
delay=1, status=sent (250 Ok: queued as EF90720AD)
Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: EF90720AD: 
from=<nobody at OUR-MAILSERVER.mail.com>, size=11263, nrcpt=1 (queue active)
Sep 18 04:15:26 mailrelay postfix/smtp[10879]: EF90720AD: 
to=<SPAM-FOUND at OUR-MAILSERVER.mail.com>, relay=10.49.0.7[10.49.0.7], 
delay=1, status=sent (250 2.6.0 
<200609180214.k8I2EuNo016264 at mforward2.dtag.de> Queued mail for delivery)
Sep 18 04:15:26 mailrelay postfix/qmgr[11082]: EF90720AD: removed

All this work is done with command line and grep...

Is it possible to parse this big logfile only ONCE and extract all this 
info into XML?

Like this:

<message id="200609180214.k8I2EuNo016264 at mforward2.dtag.de">
   <timestamp>Sep 18 04:15:26</timestamp>
   <from>sender at mail.net.mx</from>
   <to>receiver1 at mail.com</to>
   <to>receiver2 at mail.com</to>
   <to>receiver3 at mail.com</to>
   <to>receiver4 at mail.com</to>
   <queueID>EF90720AD</queueID>
   <queueID>DA1431965E</queueID>
   <queueID>755387301</queueID>
   <spamd>
	<score>15</score>
	<filtered>yes</filtered>
	<sendto>SPAM-FOUND at OUR-MAILSERVER.mail.com</sendto>
   </spamd>
</message>

The goal of this is to provide a web interface were we can see if the 
messages were filtered as spam (or deleted by our virus scanner).

Is it possible? Or do I have to scan / parse the file more than once?

Andi

-- 
Mozilla Thunderbird 1.5.0.7
Arch Linux


From Mark.Geyzer at gmail.com  Tue Sep 26 09:25:51 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 26 Sep 2006 06:25:51 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
Message-ID: <1159277151.292508.55360@i3g2000cwc.googlegroups.com>

volcano wrote:
> Hello, folks!
> A trivial question - I have a working Python script that I have to
> invoke from C++ code. No fancy stuff - just run the whole script with
> its parameters. No callbacks, no signalling - nada, just
> stupid,primitive, straightforward call.
>
> And while there is a lot of help on embedding, I could not find out how
> to run script as a whole.SOS!!!!

Thanks a lot to all of you who cared to answer! Eventually it was
"::CreateProcess", and it works!

But here is another question for gurus: sometimes my script fails, and
I cannot figure out why. OK, I can - especially since I terminate it
with "sys.exit()", but I want my app to know too.
"GetLastError" returns 0 - for the obvious reason that this is the
value Python interpreter returns with. But how can I get the script
return value?



From steve at holdenweb.com  Tue Sep 12 20:20:36 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 01:20:36 +0100
Subject: Are Python's reserved words reserved in places they dont need
	to   be?
In-Reply-To: <1158104306.330476.269960@m73g2000cwd.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
	<1158104306.330476.269960@m73g2000cwd.googlegroups.com>
Message-ID: <ee7ira$3hj$1@sea.gmane.org>

metaperl wrote:
> Istvan Albert wrote:
> 
>>metaperl wrote:
>>
>>>-->  python -i
>>>
>>>>>>class = "algebra"
>>>
>>>  File "<stdin>", line 1
>>>    class = "algebra"
>>>          ^
>>>SyntaxError: invalid syntax
>>
>>Designing a syntax to avoid all possible newbie errors is impractical
>>because as soon as you are finished with one iteration the new newbies
>>will start making different kinds of errors...
>>
>>Take solace in the fact that you've been immediately notifed of the
>>error while its fix: renaming pass to passwd is trivial ...
> 
> 
> The error message is not very explicit - "class is a reserved word"
> will make far more sense to a new programmer than SyntaxError.
> Especially since the expression is rather innocent looking and
> correct-looking.
> 
Well maybe, but one might as well have the interpreter complain that 
'"=" is an invalid class name'. Once an unmatchable token is encountered 
which parsing it's often difficult from inside the parser to determine 
exactly what the programmer's intent was.

Otherwise you could try and fix the error, like the PL/1 F-level 
compiler used to. This would usually work when all that was wrong was a 
missing semicolon, but it frequently went completely berserk in other 
cases, leading to strange and implausible error reports.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From thermate at india.com  Fri Sep 29 01:11:48 2006
From: thermate at india.com (thermate at india.com)
Date: 28 Sep 2006 22:11:48 -0700
Subject: $1 MILLION REWARD for a simple paper in PHYSICS -- CONTROLLED
	DEMOLITION HOAX of 9/11
Message-ID: <1159506708.040845.171370@i42g2000cwa.googlegroups.com>

Copy and paste from the site on 911 http://reopen911.org/

$1 Million Challenge Details

This is void where prohibited by law: including but not limited to
Colorado , Maryland , Nebraska , North Dakota, Vermont, New Jersey and
Tennessee. It is void anywhere prohibited by law.

The contest page supercedes all previous ones and all previous offers
are withdrawn. 3-September-2006. Only four significant changes have
been made since the beginning except for clarification, (a) point 12,
about molten steel. b) We equate exotic weapons as "explosives" (you do
not have to prove that exotic weapons were not used. But you cannot
claim the prize if you do prove that exotic weapons were used). c) The
renaming of this offer as a challenge and not a contest. d) all
evidence and points presented by Scholars for Truth, Professor Jones,
and Morgan Reynolds must be refuted and are included in the
requirements, and [newest] e) the radiation contents of the dust must
be explained.

[Note: that the point of this challenge is to show that the terrorist
administration of George Bush control of the NIST's contention of how
the buildings fell is totally ludicrous. We continue to update this
page with more facts as Professor Jones, Morgan Reynolds, Nico Haupt,
Jim Fetzer, Rosalee Grable, Gerard Holgram, and others point out more
and more holes in the official"bull...."] No one as of 3 September 2006
has even entered a valid entry that has all of the demanded points
answered with calculations, drawings and timelines. Anyone can claim.
No one has put up on their side. We have put up $20,000 under the FOIA
to get all of the NIST's data. it is coming to www.nistreview.org

In response to challenges that one cannot prove a negative this
paragraph has been added. There are several famous negative "proofs"
that are accepted by the entire scientific community:

    The Second Law of Thermodynamics.
    The Heisenburg Principal

    If I prove that I am at point A, that proves I am not at point B.

    If one claims that there is an elephant in a room and we enter the
room to find that it is empty, that proves there is not an elephant in
the room.

    For a more detailed debunking of, "you cannot prove a negative",
See Article

This challenge has taken the form of the latter two logical statements
above. When people say you cannot prove a negative, they are referring
to statements like:

    "This exists because there is no proof that it does not exist."

All explanations, in all parts of this contest must be supported with
detailed drawings for all significant events. Particularly, explain and
document with drawings and engineering the following video clips: 1) In
this first video at 0:02 the puffs start below the collapse. 2) At 0:05
several floors blow out at the exact same time. 3) The explosions come
in waves. 4) This 2rd video shows puffs coming out of floors far below
the buckling section. 5) At 0:09 some puffs come out of single windows
far below the collapse. Remember that the government claims that the
elevator shafts were open chimneys so that would have been the path of
least resistance to the blown out windows in the lobbies. 6) At 0:12 at
the lower left corner of the building explodes ahead of the collapse.
7) This 3rd video, the collapse is not floor by floor as the left side
explodes approximately 4 floors ahead of the right side at the corner,
not the middle of the floor as the FEMA drawings show. 8) This north
tower video the same. 9) This second North Tower video the demolition
"squibs" of dust shooting out several floors below the "collapse". 10)
In the this video the fireman describes how was EVERYTHING reduced to
dust, everything. Not even standard controlled demolitions do that as
building 7 showed. No building collapse has ever done that. Explain and
document.

11) The second flash above and our screen saver show a video of pieces
of the building flying UP and out over 100 meters with trails [this
sentence was modified August 22, 2006] of something following them or
flowing from them (at 6.1 seconds you see the best example); provide
details and drawings of how this happened including the composition of
the trails and how they are able to follow or flow from them. Remember
that structural steel is brittle, it does not flex like Iron. Therefore
there is no possibility of it flexing enough to catapult itself upward.

12) This is a new requirement added on November 11, 2005: There are
several published observations of molten metal in the basements of all
three buildings, WTC 1, 2 and 7.  For example,

    Dr. Keith Eaton toured Ground Zero and stated in The Structural
Engineer, "They showed us many fascinating slides [Eaton] continued,
ranging from molten metal which was still red hot weeks after the
event, to 4-inch thick steel plates sheared and bent in the disaster."
(Structural Engineer, September 3, 2002, p. 6; emphasis added.)

    The observation of molten metal at Ground Zero was emphasized
publicly by Leslie Robertson, the structural engineer responsible for
the design of the World Trade Center Towers, who reported that "As of
21 days after the attack, the fires were still burning and molten steel
was still running."  (Williams, 2001, p. 3; emphasis added.)

    Sarah Atlas was part of New Jersey's Task Force One Urban Search
and Rescue and was one of the first on the scene at Ground Zero with
her canine partner Anna.  She reported in Penn Arts and Sciences,
summer 2002, "'Nobody's going to be alive.' Fires burned and molten
steel flowed in the pile of ruins still settling beneath her feet."
(Penn, 2002; emphasis added.)

    Dr. Allison Geyh was one of a team of public health investigators
from Johns Hopkins who visited the WTC site after 9-11. She reported in
the Late Fall 2001 issue of Magazine of Johns Hopkins Public Health,
"In some pockets now being uncovered they are finding molten steel."

    Since steel melts at approximately 2,800? Fahrenheit. The maximum
temperature of a flame in open air is 1800 degrees F. FEMA and NIST
claim a temperature of only 90O? Fahrenheit was reached to weaken the
steel. Explain how the steel melted without explosives.

13) The seismic data shows the structure of the tower was broken apart
in 8 to 10 seconds, though many of the pieces of the building took
longer than that the fall. Entrants must prove how the trade towers
steel structure was broken apart without explosives in that time
period.  Please note this says "broken apart", not collapsed. There is
a sequence of photos in Eric Hufschmid's Painful Questions on pages 50
to 55 showing big steel beams falling in the air where the explosives
are staying ahead of the falling beams. That shows exactly what the
seismic data shows; namely, the explosives were shattering the building
faster than the rubble was falling. The steel beams were falling at
free fall speeds. [Added 25 Aug, 2006. If you question the time and can
provide proof of a different time, then you may use that time. You
still have to have detailed drawings and a time line supported by the
calculations of the physics of energy and motion. It takes time and
energy for a collapse to break apart the bolts, welds, concrete and
steel floors, and beams]

The formula for distance and time is:

s=?at?

Where:

s = distance in feet
a = gravitational constant: 32 ft/sec?
t = time in seconds.

The videos and seismic records show that the time of one structure's
destruction was approximately 8.4 seconds though the complete settling
of the building lasted slightly longer, perhaps as long as 12 seconds,
but not long enough to account for anything but explosives.

s = ? * 32 * 8.5?
s = 1156 feet

However, WTC 1 (the north tower) had a roof height of 1,368 feet. WTC 2
(the south tower) was nearly as tall, with a roof height of 1,362 feet.
Each floor was therefore approximately 12.5 feet.

It is therefore proven that the towers' structures were destroyed at
very close to free fall speed, perhaps faster since there is air
resistance to consider. Impossible without explosives.

14) Since it is alleged that the floors pancaked down on each other
crushing each floor as it went, entrants' must prove explosives were
not used with a time line with the energy needed, mass affected, time
to fall and time to break all of the hundreds of thousands of bolts,
rivets and welds, crush all the concrete plus thousands of computers,
desks, copy machines, all the office contents, the speed of the total
falling mass after each impact, and net mass falling after each
observed ejection of the dust clouds of concrete powder, and the energy
required to send the cloud all the way to New Jersey in a
self-contained flow (this alone requires 14 tons of explosives - the 14
tons paper must be disproved as part of this contest. 15) Contestants
must show exactly how the concrete was pulverized and ejected with
detailed drawings).

16) Force is a factor relative to resistance. For instance, we are on
the earth's surface spinning around the earth's center at 1000 miles
per hour. So we each have the POTENTIAL force of our individual masses
being in a wreck at 1000 mph. But since we and most of the objects on
the earth are all moving at the same relative speed, there is nothing
for this force to work against and we are unharmed - in effect there is
no force. The same holds true for the building collapses. The potential
force to crush the concrete by the falling mass is relative to the
resistance it meets. If there is no resistance, there is no crushing.
If there is a little resistance, then there will be a little crushing,
and so on, depending on the amount of resistance. If the bolts, rivets,
and welds held, then the building would not continue to collapse. If
the resistance of the bolts, rivets, and welds was less than the power
needed to crush concrete, then the concrete would not have been crushed
until the whole mass hit the ground. Entrants must prove that the steel
bolts, rivets, and welds still had the resistance to stop the falling
mass long enough for the concrete and contents to be crushed. Then they
must explain what made them fail after the concrete was crushed. The
timing is important since it takes time to do anything, especially to
crush concrete, steel desks, etc. Entrants must include the energy
required, source, resistance, and timing for breaking the bolts,
rivets, welds, office contents, and concrete.

17) Entrants' must prove how the floors fell straight down so that each
floor was crushed uniformly and how the pulverized dust was ejected
from a steel pan with a steel plate and carpet over it. The official
diagrams show each floor hitting in the middle of the lower floor. If
so, then the concrete in the center might have been crushed, but not at
the edges. Since all the concrete was pulverized, entrants must explain
this in detail. Moreover, the graphic and video at the top of this page
show that the collapses in that portion were not straight down: that
the lower left corner is 4 or more stories ahead of the right. This
must be explained in detail and, like every other significant point,
with drawings and then the mechanism that changed the fall to straight
down.

To disprove explosives were used, entrants must further :

18) Provide a time and heat transfer study of attainable temperatures
within the core and perimeter columns based on best available data on
fuel load, air supply, efficiency of combustion and the spatial and
temporal extent of the fires, which the photographs and firemen's radio
transmissions show were small.

19) Describe in detail what "additional local failures" took place,
consistent with temperatures attained and initial damage.

20) Explain in detail how such local failures could lead to sudden and
complete failure of all core columns.

21) Account for the highly symmetrical and near-vertical character of
the collapses.

22) Describe the initiating event and mode of propagation of the final
collapse, consistent with the observed progression of the collapses,
including the near free-fall speed and (almost) complete disappearance
of the core columns.

23) [added 27 August, 2006] Explain the radioactive dust samples that
indicate a micronuclear weapon was used

The first person to prove explosives were NOT used in all of the above
with a full, detailed mathematical analysis covering all of the points
above will receive $1,000,000. The proof will be subject to
verification by a scientific panel of PHD engineers, physicists, and
lawyers.

This offer is void where prohibited by law.

Jimmy Walter



From codecraig at gmail.com  Fri Sep 15 15:47:30 2006
From: codecraig at gmail.com (abcd)
Date: 15 Sep 2006 12:47:30 -0700
Subject: wxTimer problem
Message-ID: <1158349650.327255.135060@k70g2000cwa.googlegroups.com>

I have a python script which creates a wx.App, which creates a wx.Frame
(which has a wx.Timer).

looks sorta like this:

class MyProgram:
    def __init__(self):
        self.app = MyApp(0)
        self.app.MainLoop()

class MyApp(wx.App):
    def OnInit(self):
        self.myframe= MyFrame()
        self.myframe.Show(True)
        self.SetTopWindow(self.myframe)
        return True

class MyFrame(wx.Frame):
    def __init__(self):
       # do some other stuff here

       # setup the timer
        self.timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)
        self.timer.Start(100)

    def killTimer(self):
        self.Unbind(wx.EVT_TIMER)
        self.timer.Stop()
        self.timer = None


....that's the jist of it.

Anyhow, so I startup python and import my script, which loads up the
wx.App, frame and all.

foo = MyProgram()


Then I close the frame.  when the frame is closed it calls killTimer.
This method gets called and no exceptions occur.

Then...I create a new instance of the app and try to load the frame
again.

foo = MyProgram()

...and I am getting this error:

"timer can only be started from the main thread"

how can I fix this??

FYI, my script is being started by a new thread each time, so
ultimately we have....

def startProgram():
    foo = MyProgram()

threading.Thread(target=startProgram).start()


Thanks in advance.



From kairosenthal at tiscali.de  Wed Sep 13 05:26:31 2006
From: kairosenthal at tiscali.de (kai rosenthal)
Date: 13 Sep 2006 02:26:31 -0700
Subject: os.access(file, os.R_OK) on UNIX and WINDOWS
Message-ID: <1158139591.639601.64130@i3g2000cwc.googlegroups.com>

Hello,

on UNIX I changed the permission of a file "myfile" with chmod 000
myfile. Then I got 0 from os.access(myfile, os.R_OK). This is ok.

Then I checked the same file on WINDOWS (with samba):
I got "True" from os.access(myfile, os.R_OK). I think it is not ok?!

In my python script I check the return value of os.access(myfile,
os.R_OK) and when it is "True" I copy the file with shutil.copy(myfile,
newfile).
But on WINDOWS I get the error: IOError: [Errno 13] Permission denied.

How can I check the right file access with python on WINDOWS before
copying the file?
Is it a samba configuration?

Thank' for your hints, Kai



From nick.kigs at gmail.com  Sun Sep 10 23:47:41 2006
From: nick.kigs at gmail.com (Nick)
Date: 10 Sep 2006 20:47:41 -0700
Subject: Python on handhelds
Message-ID: <1157946461.741174.152870@m73g2000cwd.googlegroups.com>


Hi all,

I have never programmed in Python a day in my life. My group is working
on developing an application on the Dell Axim hand held that has a
tight deadline. I have heard that Python is particularly advantageous
in rapid prototyping and deployment. I would like to lean this way if I
can. Does anyone know if I can run Python on the Dell Axim handheld. It
runs Windows CE. If so, what all is needed to make this possible.
Thanks


Nick../



From gnewsg at gmail.com  Tue Sep 19 03:57:07 2006
From: gnewsg at gmail.com (billie)
Date: 19 Sep 2006 00:57:07 -0700
Subject: why a main() function?
In-Reply-To: <m2y7sgve6n.fsf_-_@unique.fqdn>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<m2y7sgve6n.fsf_-_@unique.fqdn>
Message-ID: <1158652627.234365.273400@m7g2000cwm.googlegroups.com>

Another advantage is that you can catch all the unhandled exceptions of
the entire program (it they occurs) by doing something like this:

def another_call():
    raise SomeUnexpectedException   # it will be catched in '__main__'

def call():
    another_call()

def run():
    call()

in __name__ == '__main__':
    try:
         run()
    except:
         # do cleanup
         # log exit message
         # exit



From lm401 at cam.ac.uk  Thu Sep 21 05:52:58 2006
From: lm401 at cam.ac.uk (lm401 at cam.ac.uk)
Date: 21 Sep 2006 02:52:58 -0700
Subject: Can I inherit member variables?
Message-ID: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>

I'm trying to work with the following idea:

class animal:
  def __init__(self, weight, colour):
    self.weight = weight
    self.colour = colour


class bird(animal):
  def __init__(self, wingspan):
    self.wingspan = wingspan
    print self.weight, self.colour, self.wingspan

class fish(animal):
  def __init__(self, length):
    self.length = length
    print self.weight, self.colour, self.length


So basically I have a base class (animal) that has certain attributes.
When animal is inherited by a specific instance, further attributes are
added, but I need to have access to the original attributes (weight,
colour). When I run my code from within the derived class, self.weight
and self.colour are not  inherited (although methods are inherited as I
would have expected).

It seems from reading the newsgroups that a solution might be to
declare weight and colour as global variables in the class animal:

class animal:
  pass

myanimal = animal()
myanimal.weight = 4
myanimal.colour = 'blue'

But this is not exactly what I want to do.

I'm not very experienced with OOP techniques, so perhaps what I'm
trying to do is not sensible. Does Python differ with regard to
inheritance of member variables from C++ and Java?

Thanks for any help,



 Lorcan.



From igor at mekensleep.com  Fri Sep  1 11:27:10 2006
From: igor at mekensleep.com (Igor Kravtchenko)
Date: Fri, 01 Sep 2006 17:27:10 +0200
Subject: os.name under Win32
Message-ID: <44F8514E.4030004@mekensleep.com>

Hi!

We have an application using Python that is intended to work both under 
Win32 and Linux.
Since some parts of the code need to be different depending whether we 
are under Win32
or Linux, we use the traditional:

if os.name == "posix":
  some Linux code
else:
  some Win32 code

However, we have noticed that under some circumstances, in some cases, 
in some
computers under Windows XP Family that the "posix" code was executed causing
of course a crash.

My question is whether that is supposed to be totally impossible.
Under Win32, we are indeed supposed to have os.name = "nt".  Is that value
hardcoded in Win32 binaries distribution themself?  Can it potentially 
change?

The purpose of this thread would be to have confirmed that under Win32,
os.name cannot never, ever be equal to "posix", whatever happens and so,
that we must have done some other mistakes elsewhere.

Thanks for any enlighting,

Igor.



From jmpurser at gmail.com  Wed Sep  6 23:59:14 2006
From: jmpurser at gmail.com (John Purser)
Date: Wed, 06 Sep 2006 20:59:14 -0700
Subject: iso creation for python backup script
In-Reply-To: <c5b438120609062055g24e2d9fax48c40a3af4d801cf@mail.gmail.com>
References: <c5b438120609061942w7f23b5f1i18b54b30de33ccd4@mail.gmail.com>
	<edo20v$38e$1@sea.gmane.org>
	<c5b438120609062055g24e2d9fax48c40a3af4d801cf@mail.gmail.com>
Message-ID: <1157601554.5378.12.camel@localhost.localdomain>

Windows itself (2000+) comes with it's own backup solution that might
even support burning to disk.  I haven't used MS in a year or so but it
might be worth looking at.

John Purser

On Wed, 2006-09-06 at 22:55 -0500, Ryan Krauss wrote:
> Something like burn4free could work if there was a way to write an
> input script for it.  I am trying to avoid manually adding different
> folders to the backup each time.  I want a script that does it all for
> me.
> 
> On 9/6/06, Steve Holden <steve at holdenweb.com> wrote:
> > Ryan Krauss wrote:
> > > I would like to write a python script to backup my wife's important
> > > stuff to a CD or DVD.  She is running windows.  Is there an easy way
> > > to create as iso image file using python or some other way to use
> > > python to create (and burn?) a cd?  I am open to other free cd backup
> > > tools that work in windows if there are any suggestions, but I want a
> > > lot of flexibility about what goes into the backup (which is why I
> > > would prefer to do it in python and have full control).
> > >
> > I'll leave others to answer the Python question, but I use Burn4Free
> > (http://www.burn4free.com/) - this product wil also write ISO images
> > should you choose to create them in Python.
> >
> > regards
> >   Steve
> > --
> > Steve Holden       +44 150 684 7255  +1 800 494 3119
> > Holden Web LLC/Ltd          http://www.holdenweb.com
> > Skype: holdenweb       http://holdenweb.blogspot.com
> > Recent Ramblings     http://del.icio.us/steve.holden
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> >



From steve at holdenweb.com  Thu Sep  7 06:25:23 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 11:25:23 +0100
Subject: sending emails using python
In-Reply-To: <44fff0ea$0$13946$edfadb0f@dread15.news.tele.dk>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<44fff0ea$0$13946$edfadb0f@dread15.news.tele.dk>
Message-ID: <edos1f$ert$1@sea.gmane.org>

Max M wrote:
> sridhar wrote:
> 
>>iam having user account on an exchangeserver.
>>with that can i send an email using python?
>>
>>if iam using the following code iam getting error
>>
>>
>>fromAddress = 'sridhar_kasturi at satyam.com'
>>toAddress = 'sridhar_kasturi at satyam.com'
>>msg = "Subject: Hello\n\nThis is the body of the message."
>>import smtplib
>>server = smtplib.SMTP("hstmsg002",25)
>>server.sendmail(fromAddress, toAddress, msg)
> 
> 
> 
> Do yourself a favor and use the email module to construct your messages 
> with. Constructing messages by hand can lead you into so many traps. 
> Especially if you are using international characters in you messages.
> 
> 
Good advice. However, since the error is occurring in the SMTP() call a 
malformed message is clearly not the cause of this particular problem.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Tue Sep 26 03:57:28 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 26 Sep 2006 07:57:28 GMT
Subject: IDLE - Customizing output format
In-Reply-To: <1159126159.462170.70420@d34g2000cwd.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
Message-ID: <I35Sg.8107$Ij.2250@newssvr14.news.prodigy.com>

Ilias Lazaridis wrote:
> Ilias Lazaridis wrote:
>> IDLE has an output format like this:
>>
>>  >>> object
>> <type 'object'>
>>  >>> type
>> <type 'type'>
>>  >>> object.__class__
>> <type 'type'>
>>  >>> object.__bases__
>>
>> How can I customize it to become like that:
>>
>>  >>> object
>>      <type 'object'>
>>  >>> type
>>      <type 'type'>
>>  >>> object.__class__
>>      <type 'type'>
>>  >>> object.__bases__
>>
>> or that:
>>
>>  >>> object
>>    : <type 'object'>
>>  >>> type
>>    : <type 'type'>
>>  >>> object.__class__
>>    : <type 'type'>
>>  >>> object.__bases__
>>
>> (preferably without modifying code)
> 
> I assume this is not possible.
> 
> I am wondering that other users are not annoyed by this reduced
> readability.

I'm sure its quite unpopular to agree with you, but I do. I am 
tremendously annoyed the format of the interactive interpreter. Lovely 
would be output as you describe, but with the option, when selecting for 
copy-paste, to include the prompts and/or your suggested whitespace 
margin (e.g. select in doctest mode).

James


From fakeaddress at nowhere.org  Mon Sep 11 20:11:55 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Tue, 12 Sep 2006 00:11:55 GMT
Subject: How to stop an [Rpyc] server thread?
In-Reply-To: <1157658782.629267.250160@b28g2000cwb.googlegroups.com>
References: <1157658782.629267.250160@b28g2000cwb.googlegroups.com>
Message-ID: <fXmNg.650$IA.327@newssvr11.news.prodigy.com>

Saizan wrote:
[...]
> I tried sock.settimeout(10) before entering the while and so checking
> timeout exception on accept() but I experienced a strange behavior, the
> clients connections close immediatly, with one of these exceptions on
> the client side on their first use of the rpc connection:
[...]
> socket.error: (10053, 'Software caused connection abort')
[...]
> EOFError
> 
> I'm not an expert in socket programming, but I can't see the
> correlation between the "listener socket" being in timeout mode and a
> different behavior the other sockets..

After modest investigation, it looks like a bug in Python's
sockets, at least on WinXP.

Try inserting the line after accept():

     [...]
     newsock, name = sock.accept()
     newsock.settimeout(None)
     [...]


-- 
--Bryan


From steve at holdenweb.com  Thu Sep 28 22:33:04 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 29 Sep 2006 03:33:04 +0100
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
Message-ID: <efi0jf$c68$1@sea.gmane.org>

Larry Hastings wrote:
> This is such a long posting that I've broken it out into sections.
> Note that while developing this patch I discovered a Subtle Bug
> in CPython, which I have discussed in its own section below.
> 
[...]
> ______________
> THE SUBMISSION
> 
> I don't know the protocol from this point out; should I email the patch
> somewhere?  Put it up on a web page?  Post some diff output?  (Or just
> forget about it entirely?)
> 
> Also, for what it's worth: I fixed the .dsp so pythoncore builds under
> VC6 again.  I would be happy to submit that separately.  (What can I
> say, old habits die hard.  I can't stand the newer Microsoft IDEs.)
> 
> 
> Cheers,
> 
> 
> /larry/
> 
> p.s. No, I haven't looked at a Unicode port yet.  If there's interest
> in
> this patch at all, I might take a stab at it.
> 
A fairly short reply: you should diff your source against the current 
SVN repository and lodge that diff as a patch on SourceForge. It 
wouldn't hurt to let one or two developers know, thought they *might* 
pick it up without.

Your suggested bug isn't, I think a real bug in the current 
implementation because as I understand it Python strings do always 
include a trailing null byte to act as a terminator when the string is 
passed to C code in extensions.

Nice idea, though. You might also see how it does on tasks like

s = ""
for i in range(100000):
     s += "a"

since I believe that's the main culprit in increasing the O(). Also note 
that some optimisation has recently been performed on string 
concatenation, which I presume your code has already taken into account.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From onurb at xiludom.gro  Fri Sep 29 10:54:32 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 29 Sep 2006 16:54:32 +0200
Subject: How to iterate through a sequence, grabbing subsequences?
In-Reply-To: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
References: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
Message-ID: <451d33a9$0$22407$626a54ce@news.free.fr>

Matthew Wilson wrote:
> I wrote a function that I suspect may already exist as a python builtin,
> but I can't find it:
> 
> def chunkify(s, chunksize):
>     "Yield sequence s in chunks of size chunksize."
>     for i in range(0, len(s), chunksize):
>         yield s[i:i+chunksize]
> 
> I wrote this because I need to take a string of a really, really long
> length and process 4000 bytes at a time.
> 
> Is there a better solution?

I don't know if it's better, but StringIO let you read a string as if it
was a file:

def chunkify(s, chunksize):
  f = StringIO.StringIO(long_string)
  chunk = f.read(chunksize)
  while chunk:
    yield chunk
    chunk = f.read(chunksize)
  f.close()

Now I'm sure someone will come up with a solution that's both far better
and much more obvious (at least if you're Dutch <g>)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From eval.apply at gmail.com  Wed Sep 27 12:26:45 2006
From: eval.apply at gmail.com (Joe Marshall)
Date: 27 Sep 2006 09:26:45 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <1159374405.239644.192750@m7g2000cwm.googlegroups.com>


Xah Lee wrote:
> Computer Language Popularity Trend
>
> This page gives a visual report of computer languages's popularity, as
> indicated by their traffic level in newsgroups. This is not a
> comprehensive or fair survey, but does give some indications of
> popularity trends.

Suggestions:
  Provide a log-scale plot.  You can clearly see that there are
exponential trends in the data, these will turn into lines in
log-scale.  You can also see that the plots get more widely distributed
as the number of posts increase.  This too will be minimized in
log-scale.

  Make the horizontal scale for the `scripting' languages the same as
the others.  I know there isn't data out on the left of the graph, but
it surprised me to see points out there until I noticed the scale
change.

  For the Google trends, try looking for `java programming' or `written
in python' to avoid picking up the island and the popular comedy troupe.



From tim.golden at viacom-outdoor.co.uk  Thu Sep 28 02:42:26 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 28 Sep 2006 07:42:26 +0100
Subject: Starting Win32 Service
In-Reply-To: <1159411573.991831.47230@i42g2000cwa.googlegroups.com>
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B4B6@vogbs009.gb.vo.local>

[placid]
| > Now i was trying to use service.ChangeStartMode but each 
| time i pass in
| > an argument i get the error;
| >
| > #TypeError: __call__() takes exactly 1 argument (2 given)
| >
| > but;
| >
| > >>> print service.ChangeStartMode
| > <function ChangeStartMode (StartMode) => (ReturnValue)>
| >
| > ChangeStartMode needs an argument!
| >
| > What im i doing wrong here?
| 
| And to answer my own question, the way to pass in arguments is via the
| key=value way so;
| 
| service.ChangeStartMode(StartMode = "Automatic")

Yes, sorry about that, it's a well-known (to me) gotcha.
Basically there's no way I can extract the params from
the COM interface in a way which implies order, so I
can't take them in positionally. (Corrections to this
statement will be gratefully received).

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From arutz at mimoza.pantel.net  Fri Sep  1 06:52:51 2006
From: arutz at mimoza.pantel.net (Antal Rutz)
Date: Fri, 01 Sep 2006 12:52:51 +0200
Subject: Django website
Message-ID: <44F81103.2040901@mimoza.pantel.net>

hi,

is there something wrong with django's website (djangoproject.com)
or I have problems?
It looks ugly, the css files can't be found, I even cannot download
the source from there.
Do you know anything about them?
Any mirror I can get the tarball from?

Thanks

-- 


--arutz


From rdiaz02 at gmail.com  Fri Sep 15 09:43:26 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Fri, 15 Sep 2006 15:43:26 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <450A882D.3050605@freakmail.de>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
	<4509D2E4.9060503@freakmail.de>
	<624934630609150047w74c7d752i9fc9020044c76bb1@mail.gmail.com>
	<450A882D.3050605@freakmail.de>
Message-ID: <624934630609150643r472d486ds92ff8295ec4754e2@mail.gmail.com>

On 9/15/06, Wildemar Wildenburger <wildemar at freakmail.de> wrote:
> Ramon Diaz-Uriarte wrote:
> > - I was referring to executing arbitrary sections of a Python file in
> > a Python interpreter in an "integrated way". When I tried JEdit, I
> > think that Jython was the way to go. (And I think this was also the
> > case for a while, at least to judge from D. Metrz's review
> > http://www-128.ibm.com/developerworks/library/l-cpyide/
> >
> >
> >> The console plugin (probably THE most useful of the pack) gives you a
> >> system shell and means to start compilers/interpreters based on your
> >
> > But isn't this a "generic console": you go to the console, and then
> > type "python2.3" or "python2.4" or whatever? How do you send arbitrary
> > selections of Python code from the file you are editing to this shell?
> > Is there a way to mark a section of code and have it evaluated by the
> > python interpreter? Or a function definition?
>
> Ahh, I see. Well, you're right, that is not that easily possible. But
> you know what? I've never missed such functionality; the "if __name__
> ..." trick always sufficed for me. Buts thats taste of course, lets not
> debate that.

Thanks for the clarification. (And no, I won't debate that: the choice
of editor is (and should be) very much a matter of personal taste, and
JEdit is certainly a very fine and interesting editor).


Best,

R.


From lycka at carmen.se  Thu Sep 28 04:16:01 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Thu, 28 Sep 2006 10:16:01 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <mailman.858.1159420077.10491.python-list@python.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>	<45186d05$0$13975$edfadb0f@dread15.news.tele.dk>	<1159296524.293839.306170@k70g2000cwa.googlegroups.com>
	<mailman.858.1159420077.10491.python-list@python.org>
Message-ID: <efg0c1$upq$1@wake.carmen.se>

Stuart Bishop wrote:
> My personal experience is that there is a shortage of good Python
> programmers. In Melbourne, Australia for example there is a continual need
> for about 2 more - one Python shop there just hires clueful developers and
> makes their first task 'learn Python'. We generally have a few positions
> open at any particular moment too - http://www.ubuntu.com/employment (but we
> are picky - it is hard to hand hold when the hand is several time zones away).

It's much easier to learn Python than it is to learn good general
software development skills, so I think that's a good approach. My
room mate here at work didn't know any Python programming before he
came, but he was fluent pretty soon. Like me, he's starting to make
stupid mistakes in C++, such as forgetting trailing ; after each line.
:)

We are fairly picky here when we employ people, but while we appreciate
that they already know Python, we don't see it as a major issue. It's
quick and easy to learn. Mentioning Python in job ads is maybe more a
way to attract people who take clever initiatives.

> On a slight tangent, one of the appealing things about Python (and other
> 'non-mainstream' languages) in the past has been that the people who knew
> Python also tended to be the people you wanted to employ - they generally
> had experience in other languages but moved onto something they perceived as
> 'better' either at work or home. It indicated a level of care and pride
> about their profession rather than someone who just treated cutting code as
> a day job. 

That depends if you are an employer who wants to lead
a team of skilled professionals or if you prefer a
herd of sheep that you lead around with a stick.

So, as someone who want to be employed, you influence
what kinds of job you tend to get with what you learn.
Do you prefer a job where you are just expected to do
exactly what you are told, or are you eager to take
initiatives and change your work place to something
better?


From onurb at xiludom.gro  Thu Sep 28 04:39:09 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 10:39:09 +0200
Subject: windev vs python SOS
In-Reply-To: <1159399077.248154.160800@d34g2000cwd.googlegroups.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159399077.248154.160800@d34g2000cwd.googlegroups.com>
Message-ID: <451b8a2e$0$8876$636a55ce@news.free.fr>

John Henry wrote:
> I don't know what windev is 

A french (highly proprietary) so-called "CASE-Tool" with a so-called
"5th generation language" (lol) that is mostly a dumbed-down mix of
basic and pascal. It's so bad that it makes you regret VB6.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From brian at sweetapp.com  Tue Sep 26 11:17:52 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Tue, 26 Sep 2006 17:17:52 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehig0d.9o0.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<Xns984996E6BABCEduncanbooth@127.0.0.1>	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>	<mailman.672.1159275735.10491.python-list@python.org>	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>	<mailman.680.1159277904.10491.python-list@python.org>	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>	<mailman.687.1159280315.10491.python-list@python.org>	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
Message-ID: <451944A0.2060109@sweetapp.com>

A summary of this pointless argument:

Why cgi.escape should be changed to escape double quote (and maybe
    single quote) characters by default:
o escaping should be very aggressive by default to avoid subtle bugs
o over-escaping is not likely to harm most program significantly
o people who do not read the documentation may be surprised by it's
   behavior

Why cgi.escape should NOT be changed:
o it is current used in lots of code and changing it will almost
   certainly break some of it, test suites at minimum e.g.
   assert my_template_system("<p>{foo}</p>", foo='"') == '<p>"</p>'
o escaping attribute values is less common than escaping element
   text so people should not be punished with:
     - harder to read output
     - (slightly) increased file size
     - (slightly) decreased performance
o cgi.escape is not meant for serious web application development, so
   either roll your own (trivial) function to do escaping how you want
   it or use the one provided by your framework (if it is not automatic)
o the documentation describes the current behavior precisely and
   suggests solutions that provide more aggressive escaping, so arguing
   about surprising behavior is not reasonable
o it doesn't even make sense for an escape function to exist in the cgi
   module, so it should only be used by old applications for
   compatibility reasons


Cheers,
Brian




From dutche at gmail.com  Tue Sep 19 09:19:14 2006
From: dutche at gmail.com (dutche)
Date: 19 Sep 2006 06:19:14 -0700
Subject: I need some tips to begin a simple project
Message-ID: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>

Hi, I'm new in Python and I'm learning with "Learning Python" oreilly's
book which is very good written and explanatory.

Now, that I know a bit of Python, I want to make some simple project, I
thought something like a menu, just like "kxdocks" menu or something
like that, with transparency and all with xml. But I dont know what
things I have to know.

PyGame is in it, right?

And I can use some other graphical interface, like OpenGL? Or with
PyGame I can do an animattion like zooming the icon image when hover?

All sugestions would be very nice :)

Thanks for all



From duncan.booth at invalid.invalid  Wed Sep 27 05:03:46 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 09:03:46 GMT
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<slrnehkc4a.smm.nick@irishsea.home.craig-wood.com>
Message-ID: <Xns984B665F9485Cduncanbooth@127.0.0.1>

Nick Craig-Wood <nick at craig-wood.com> wrote:

> In python when making __slots__ or module.__all__ you end up typing
> lists of objects or methods and they turn out like this which is quite
> a lot of extra typing
> 
>   __slots__ = ["method1", "method2", "method3", "method4", "method5"]
> 
> 

For __all__ you can use a decorator to avoid retyping the function name at 
all. e.g.

def public(f):
    all = f.func_globals.setdefault('__all__', [])
    all.append(f.__name__)
    return f

@public
def foo(): pass

I don't use __slots__ much at all, and if you'd said "attribute1" etc. I'd 
have understood, but I'm really curious why would you be listing any 
methods in __slots__?


From awalter1 at cegetel.net  Sun Sep 10 14:51:37 2006
From: awalter1 at cegetel.net (awalter1)
Date: 10 Sep 2006 11:51:37 -0700
Subject: get the en of a program running in background
Message-ID: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>

Hi,
I develop a graphical user interface (with pyGTK) where a click on a
button shall launch a program P in background. I want to get the end of
this program P but I don't want that my HMI be freezed while P is
running.
I try to use fork examplesI found on the web, but it seems to not run
as expected.
I am not familiar with these techniques in unix as well as python.
But I suppose that my needs are usual, despite that I don't find
anything on the web ...
Is someone can give me a standard way to call a background program,
wait its end, with an IHM still active ?

Thank a lot for any idea.



From edward_waugh at hotmail.com  Sun Sep 17 15:36:30 2006
From: edward_waugh at hotmail.com (Edward A. Waugh)
Date: Sun, 17 Sep 2006 12:36:30 -0700
Subject: Problem with operator overloading and inheritance in Python
Message-ID: <BAY107-DAV498667C2E70EBED239EF8FD2C0@phx.gbl>

Consider the following code:

import sys

class FirstClass:
    def __init__(self, value):
        self.data = value
    def __add__(self, value):
        return FirstClass(self.data + value)
    def display(self):
        print self.data

class SecondClass(FirstClass):
    def __add__(self, value):
        # Generalized version of SecondClass(self.data + value).
        sum = FirstClass(self.data) + value
        return SecondClass(sum.data)
    def display2(self):
        print self.data

x = SecondClass(1)
# Must reimplement __add__ in SecondClass or else x after the assignment is
# an instance of class FirstClass not SecondClass.  This implies that all
# subclasses of classes that overload operators such as + must reimplement
# those methods to ensure that the class being returned is correct.
x += 1 
x.display2()

Note the comments in the code and observe that as is execution yields:

C:\Files\Python> problem.py
2

But if the reimplementation of __add__ in SecondClass is removed (or commented out) then as claimed in the comment above the code does not work:

C:\Files\Python> problem.py
Traceback (most recent call last):
  File "C:\Files\Python\problem.py", line 25, in ?
    x.display2()
AttributeError: FirstClass instance has no attribute 'display2'

This is because x after the statement x += 1 has been executed is an object of class FirstClass because the method implementing addition in FirstClass explicitly returns a FirstClass object.

This seems to me to be a big problem because what this means is that if class X overloads any operator, e.g. addition, then all subclass of X (and all subclasses of those subclasses recursively)
must reimplement all the operator methods defined in X.

Is this a real problem with Python or just the way I am coding it as I admit that I am new to Python?
If its my fault then what is the correct way to implement SecondClass?

Thanks,
Edward

P.S. Why were slices ([low:high]) implemented to return the low'th to high-1'th values of a sequence?  For example I would expect that [2:4] of "abcdef" would return "cde" not "cd" and this is the case in other languages that do support slices of strings (HP BASIC) and arrays (Perl).  But I do accept that this a personal preference of mine so if folks don't agree with me that is fine.
-------------- next part --------------
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From dbraden at invalid.add  Thu Sep 14 18:30:17 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 22:30:17 GMT
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <mailman.69.1158219333.10491.python-list@python.org>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>	<mailman.20.1158149440.10491.python-list@python.org>	<NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>	<mailman.46.1158171607.10491.python-list@python.org>	<wr4Og.943$TV3.904@newssvr21.news.prodigy.com>
	<mailman.69.1158219333.10491.python-list@python.org>
Message-ID: <ZJkOg.1256$6S3.300@newssvr25.news.prodigy.net>

Fredrik Lundh wrote:
<<snip>>
..
> 
> or get a more convenient distribution.
> 
> </F>
> 
Suggestion(s) for Windows os and cygwin?
TIA
DaveB


From evanpmeth at gmail.com  Tue Sep  5 22:39:45 2006
From: evanpmeth at gmail.com (evanpmeth at gmail.com)
Date: 5 Sep 2006 19:39:45 -0700
Subject: Question about urllib and posting to an external script
Message-ID: <1157510385.199687.124670@m73g2000cwd.googlegroups.com>

I have tried multiple ways of posting information to a website and have
failed. I have seen this problem on other forums can someone explain or
point me to information on how POST works through urllib an different
broweser (what is the difference).

my first attempt was out of the docs:

Code:

import httplib, urllib params = urllib.urlencode({'email' : 'a at a.com',
'password' : 'pass'}) h = httplib.HTTP("login.myspace.com:80")
h.putrequest("POST", "/index.cfm?fuseaction=login.process&amp")
h.putheader("User-Agent", "Mozilla/5.0 <Windows; U; Windows NT 5.1;
en-US; rv;1.8.0.6> Gecko/20060728 Firefox/1.5.0.6")
h.putheader("Content-length", "%d" % len(params)) h.putheader('Accept',
'text/plain') h.endheaders() h.send(params) reply, msg, hdrs =
h.getreply() print reply # should be 200 data = h.getfile().read() #
get the raw HTML print data



this returned a page denying access
and then tried:

Code:

import httplib, urllib params = urllib.urlencode({'email' :
'ezikz at bonbon.net', 'password' : 'dicksuck'})
data
=urllib.urlopen("http://login.myspace.com/index.cfm?fuseaction=login.process&amp:80",
params).read()
print data



This returned a page that asked me if i wanted to sign up, which
confused me even more.

all i want to do is post this form:
HTML Code:

<form method='POST' enctype='multipart/form-data'
action='http://login.myspace.com/index.cfm?fuseaction=login.process&amp'>
<input type="text" name="email" > <input type="password"
name="password" > <input type="submit" value="Login"/>



Please help i was thinking maybe the site did browser sniffing and only
allowed certain types of browsers. I dont know. I have seen this
problem on other forums can someone explain or point me to information
on how POST works through urllib an different broweser (what is the
difference).



From igor at mekensleep.com  Fri Sep  1 15:13:09 2006
From: igor at mekensleep.com (Igor Kravtchenko)
Date: Fri, 01 Sep 2006 21:13:09 +0200
Subject: os.name under Win32
In-Reply-To: <ed9kpp$305$1@sea.gmane.org>
References: <44F8514E.4030004@mekensleep.com> <ed9kpp$305$1@sea.gmane.org>
Message-ID: <44F88645.9050405@mekensleep.com>


Hi Fredrik,

yes I've checked and I'm sure we don't assign os.name somewhere ourself.
I'll replace os.name == "posix" with sys.platform == "win32" as you
suggested and see how thing goes.

Thanks for your help,

Igor.


Fredrik Lundh wrote:

>Igor Kravtchenko wrote:
>
>  
>
>>We have an application using Python that is intended to work both under 
>>Win32 and Linux.
>>Since some parts of the code need to be different depending whether we 
>>are under Win32
>>or Linux, we use the traditional:
>>
>>if os.name == "posix":
>>  some Linux code
>>else:
>>  some Win32 code
>>    
>>
>
>the usual thing to test for is sys.platform, not os.name.
>
>    if sys.platform == "win32":
>        some win32 code (or win64 code)
>    else:
>        some linux code
>
>  
>
>>However, we have noticed that under some circumstances, in some cases, 
>>in some computers under Windows XP Family that the "posix" code was
>>    
>>
> > executed causing of course a crash.
>
>sounds weird.  have you checked your code so you don't assign to os.name 
>somewhere, by accident?
>
></F>
>
>  
>



From george.sakkis at gmail.com  Thu Sep  7 20:58:31 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 7 Sep 2006 17:58:31 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
Message-ID: <1157677111.804469.61660@p79g2000cwp.googlegroups.com>

Francach wrote:
> Hi,
>
> I'm trying to use the Beautiful Soup package to parse through the
> "bookmarks.html" file which Firefox exports all your bookmarks into.
> I've been struggling with the documentation trying to figure out how to
> extract all the urls. Has anybody got a couple of longer examples using
> Beautiful Soup I could play around with?
>
> Thanks,
> Martin.

from BeautifulSoup import BeautifulSoup
urls = [tag['href'] for tag in
        BeautifulSoup(open('bookmarks.html')).findAll('a')]

Regards,
George



From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep 25 05:10:21 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 25 Sep 2006 11:10:21 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
Message-ID: <slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
>> Wouldn't this be a whole lot better?
>> 
>> cursor.execute(
>>     "select * from details where person_name like ?",
>>     '%' + name + '%'
>> )
>
> No. Can you figure out why?

Ok, should have tested it better. This works fine on my machine,
though:

curs.execute(
    "select * from details where person_name like ?",
    ('%' + name + '%', )
)

Including all sorts of quotes, newlines, backslashes etc. in the name.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From skip at pobox.com  Tue Sep 12 11:00:38 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 12 Sep 2006 10:00:38 -0500
Subject: question about including something like sqlite in python
In-Reply-To: <%RyNg.2737$No6.53952@news.tufts.edu>
References: <9tiNg.2735$No6.53971@news.tufts.edu> <m2u03d26lt.fsf@unique.fqdn>
	<%RyNg.2737$No6.53952@news.tufts.edu>
Message-ID: <17670.52118.291238.504829@montanaro.dyndns.org>


    John> I guess I am just trying to figure out why I'm a little surprised
    John> sqlite was included, but at the same time I'm excited to use it
    John> and the fact that it will now be standard has caused me to look
    John> into more than otherwise. :)

You might find some of the discussion on the python-dev mailing list
instructive:

    http://www.google.com/search?hs=Phn&hl=en&lr=&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&q=site%3Amail.python.org%2Fpipermail%2Fpython-dev+sqlite&btnG=Search

This thread looks particularly interesting (and rather long-lived):

    http://mail.python.org/pipermail/python-dev/2004-October/049534.html

Skip


From http  Sun Sep 17 22:23:16 2006
From: http (Paul Rubin)
Date: 17 Sep 2006 19:23:16 -0700
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
	<4mv51sF7t5lmU1@uni-berlin.de> <12glesm56ghquc4@corp.supernews.com>
	<mailman.136.1158334482.10491.python-list@python.org>
	<12gljhfc4f81p97@corp.supernews.com>
	<mailman.142.1158342806.10491.python-list@python.org>
	<7umPg.1719$TV3.349@newssvr21.news.prodigy.com>
	<mailman.216.1158545666.10491.python-list@python.org>
Message-ID: <7xu035oquj.fsf@ruckus.brouhaha.com>

Steve Holden <steve at holdenweb.com> writes:
> As I mentioned if the posting you made a partial quote from, the
> original specification of port-mode FTP has the server making a data
> connection from its port 20 to the client port identified by the
> client's PORT command.

This is TCP port 20?  What happens if the server wants to have more
than one concurrent outgoing connection?


From fredrik at pythonware.com  Tue Sep 26 09:00:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 15:00:49 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><Xns984996E6BABCEduncanbooth@127.0.0.1><slrnehfogu.6tm.jon+usenet@snowy.squish.net><Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
Message-ID: <efb8a0$5q7$1@sea.gmane.org>

Jon Ribbens wrote:

> This has nothing to do with character encodings.

it has *everything* to do with encoding of existing data into HTML so it can be
safely transported to, and recreated by, an HTML-aware client.

does the word "information set" mean anything to you?

</F> 





From tony.bedford at gmail.com  Tue Sep 26 06:20:10 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 03:20:10 -0700
Subject: where are isinstance types documented?
In-Reply-To: <mailman.659.1159265462.10491.python-list@python.org>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
	<mailman.659.1159265462.10491.python-list@python.org>
Message-ID: <1159266010.381592.204200@e3g2000cwe.googlegroups.com>


OK Simon, thanks for that link, I think I can ferret out the common
types from there. 

Tony



From http  Tue Sep 12 11:29:34 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 08:29:34 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
Message-ID: <7xy7spaysh.fsf@ruckus.brouhaha.com>

"Mike Owens" <mikeowens at gmail.com> writes:
> > It's not the job of the System Test Engineer to design things.
> > It's his job to find fault with everything. I just happen to be very
> > good at finding faults with things.
> 
> And apparently not very good at providing any constructive solutions.

As he says, it's not his job.

> > But no one appreciates my finding those faults.
> 
> No one appreciates the tone in which you report these alleged faults,

Your tone is not so great either.

> necessarily agrees with the faults that you find, nor elected you
> system test engineer of the SQLite project.

It's an open source project, as you like to say.  Everyone is a test
engineer.

> > > standard as well. What's your position on that? Do some Googling and
> > > you can easily find 18 ways that Oracle's PL/SQL deviates from the
> > > standard. And T-SQL is plainly nowhere close.
> >
> > And how many of those systems use dynamic typing?
> 
> And how many conform to the standard?

How many of those deviations are justified in their documentation by
the responsible parties claiming, in effect, that they're smarter than
the standard's designers?

It seems obvious to me that there should, at minimum, be an option to
turn this particular nonstandard behavior on and off.


From filippo2991 at virgilio.it  Fri Sep  1 09:00:15 2006
From: filippo2991 at virgilio.it (filippo)
Date: 1 Sep 2006 06:00:15 -0700
Subject: OO on python real life tutorial?
Message-ID: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>

Hello,

I coded my +10k lines app using Perl/Tk. It is something like a hotel
software manager, it has a bunch of windows to manage the arrivals,
bills etc etc. I want to port this on Python/WxPython but I'd like to
get benefit of python, not just doing a row by row raw porting.

My problem is that I cannot figure out how OO could be useful in my
case. Is there a OO tutorial out there to help me?

Thanks,

Filippo



From gagsl-py at yahoo.com.ar  Thu Sep 14 22:54:31 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 14 Sep 2006 23:54:31 -0300
Subject: Algorithm Question
In-Reply-To: <eeconn$s2n$1$8300dec7@news.demon.co.uk>
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
	<ee44nl$8r$1$830fa79d@news.demon.co.uk>
	<1158015700.817709.253180@h48g2000cwc.googlegroups.com>
	<eeconn$s2n$1$8300dec7@news.demon.co.uk>
Message-ID: <7.0.1.0.0.20060914233655.03c5e2d8@yahoo.com.ar>

At Thursday 14/9/2006 20:31, Andrew McLean wrote:

>Now I want to issue a series of queries, such that when I combine all
>the data returned I have accessed all the records in the database.
>However, I want to minimise the total number of queries and also want to
>keep the number of records returned by more than one query small.

This is known as a "set cover" algorithm. You have a set of subsets, 
and want to determine the smallest set of those subsets, whose union 
is the universal set - (uh, what a mess!)

See "The Algorithm Design Manual" by Steven Skiena.
http://www.cs.sunysb.edu/~algorith/files/set-cover.shtml
Full text (not-so-legal, I presume): 
http://www2.toki.or.id/book/AlgDesignManual/BOOK/BOOK/NODE4.HTM



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From domien_beckers at hotmail.com  Sun Sep 10 21:09:41 2006
From: domien_beckers at hotmail.com (domer)
Date: 10 Sep 2006 18:09:41 -0700
Subject: Bloomberg
Message-ID: <1157936981.072043.174150@i3g2000cwc.googlegroups.com>

Hi everyone,

I was wondering if somebody knows how to extract intraday
fields(price,volume,trades) from Bloomberg in order to calculate the
VWAP. 

Appreciate any help

Kind regards,

Domer



From squall_leonheart7 at netzero.net  Tue Sep  5 13:38:08 2006
From: squall_leonheart7 at netzero.net (squall_leonheart7 at netzero.net)
Date: Tue, 5 Sep 2006 17:38:08 GMT
Subject: code for the graphics window?
Message-ID: <20060905.103842.760.217654@webmail60.nyc.untd.com>

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From robert.kern at gmail.com  Wed Sep 20 15:54:03 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 20 Sep 2006 14:54:03 -0500
Subject: SciPy Optimization syntax
In-Reply-To: <1158778967.058080.137980@i42g2000cwa.googlegroups.com>
References: <1158778967.058080.137980@i42g2000cwa.googlegroups.com>
Message-ID: <ees68p$ic7$1@sea.gmane.org>

tkpmep at hotmail.com wrote:
> I'm trying to optimize a function using SciPy's optimize.fmin, but am
> clearly getting the syntax wrong, and would be grateful for some
> guiidance.

You will want to ask such questions on the scipy mailing lists.

   http://www.scipy.org/Mailing_Lists

> First, here's the function
> 
> def func(Y,x):
>     """Y holds samples of a function sampled at t=-3,-2,-1,0,1,2,3.
>         Y[3]=0 always.
>         func returns the absolute value of the maximum NEGATIVE
>         error from a straight line fit with slope x and intercept 0"""
> 
>     Y[0] = Y[0] - 3*x
>     Y[1] = Y[1] - 2*x
>     Y[2] = Y[2] - x
>     Y[3] =  0
>     Y[4] = Y[4] + x
>     Y[5] = Y[5] + 2*x
>     Y[6] = Y[6] + 3*x
> 
>     error = abs(max(min(Y),0)
> 
>     return 0

If func(Y,x) == 0 for any Y or x, what exactly do you intend to minimize?

Also, do you really want to modify Y every time? fmin() will call this function 
multiple times with different values of x (if you call it correctly); your 
original data will be destroyed and your result will be meaningless.

Thirdly, it looks like you used the wrong sign for finding the residuals, or I'm 
misunderstanding the docstring. I'll assume that the docstring is correct for 
the following.

> I'd now like to minimize this using optimize.fmin. I first defined
>>> Y = [0, 0, 0, 0, 1, 2, 3]
>>> x = 1
> 
> and then typed
>>> optimize.fmin(func,  args=(Y,x) )
> 
> I expected the function to retun x=0 as the optimal value,  but instead
> got the following error messsage:
> Traceback (most recent call last):
>   File "<pyshell#24>", line 1, in -toplevel-
>     optimize.fmin(func,args=(optionPnL,x))
> TypeError: fmin() takes at least 2 non-keyword arguments (1 given)

Yes, fmin() requires two arguments, the function to minimize and an initial 
value. The docstring is pretty clear on this:


Type:           function
Base Class:     <type 'function'>
String Form:    <function fmin at 0x2028670>
Namespace:      Interactive
File: 
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy-0.5.2.dev2196-py2.4-
macosx-10.4-ppc.egg/scipy/optimize/optimize.py
Definition:     optimize.fmin(func, x0, args=(), xtol=0.0001, ftol=0.0001, 
maxiter=None, maxfun=None, full_output=0, dis
p=1, retall=0, callback=None)
Docstring:
     Minimize a function using the downhill simplex algorithm.

     Description:

       Uses a Nelder-Mead simplex algorithm to find the minimum of function
       of one or more variables.

     Inputs:

       func -- the Python function or method to be minimized.
       x0 -- the initial guess.
       args -- extra arguments for func.
       callback -- an optional user-supplied function to call after each
                   iteration.  It is called as callback(xk), where xk is the
                   current parameter vector.

     Outputs: (xopt, {fopt, iter, funcalls, warnflag})

       xopt -- minimizer of function

       fopt -- value of function at minimum: fopt = func(xopt)
       iter -- number of iterations
       funcalls -- number of function calls
       warnflag -- Integer warning flag:
                   1 : 'Maximum number of function evaluations.'
                   2 : 'Maximum number of iterations.'
       allvecs  -- a list of solutions at each iteration

     Additional Inputs:

       xtol -- acceptable relative error in xopt for convergence.
       ftol -- acceptable relative error in func(xopt) for convergence.
       maxiter -- the maximum number of iterations to perform.
       maxfun -- the maximum number of function evaluations.
       full_output -- non-zero if fval and warnflag outputs are desired.
       disp -- non-zero to print convergence messages.
       retall -- non-zero to return list of solutions at each iteration

> I then tried
>>> optimize.fmin(func,  x0 =x, args=(Y,x) )
> 
> and got a slightly different error message:
> Traceback (most recent call last):
>   File "<pyshell#25>", line 1, in -toplevel-
>     optimize.fmin(func,x0=x, args=(optionPnL,1))
>   File "C:\Python24\lib\site-packages\scipy\optimize\optimize.py", line
> 176, in fmin
>     N = len(x0)
> TypeError: len() of unsized object

fmin() minimizes functions which take arrays. They should have a signature like 
this:

def func(x):
     return stuff

If you need to pass in other arguments, like data, they need to come *after* the 
array fmin() is trying to find the optimal value for.

def func(x, Y):
     return stuff

xopt = optimize.fmin(func, x0=array([0.0, 1.0]), args=(my_data,))


However, since you are not doing multivariable optimization, you will want to 
use one of the univariable optimizers

       Scalar function minimizers

        fminbound   --  Bounded minimization of a scalar function.
        brent       --  1-D function minimization using Brent method.
        golden      --  1-D function minimization using Golden Section method
        bracket     --  Bracket a minimum (given two starting points)

For example:

from numpy import array, arange, clip, inf
from scipy import optimize

def func(x, Y):
     residuals = Y - x*arange(-3, 4)
     error = -clip(residuals, -inf, 0).min()
     return error

optionPnL = array([0.0, 0, 0, 0, 1, 2, 3])
x = optimize.brent(func, args=(optionPnL,))


Of course, there are an infinite number of solutions for this data since there 
is a cusp and a weird residual function. Any x in [0, 1] will yield 0 error 
since it is always on or below the data.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From elpX at adsihqX.com  Wed Sep  6 13:38:57 2006
From: elpX at adsihqX.com (Dr. Pastor)
Date: Wed, 06 Sep 2006 10:38:57 -0700
Subject: Path?
Message-ID: <1157563909_62823@sp6iad.superfeed.net>

I installed Python 2.5 on Windows XP.
I got the following system that works well.
---
Python 2.5b3 (r25b3:51041, Aug  3 2006, 09:35:06) [MSC v.1310 32 bit 
(Intel)] on
win32 Type "copyright", "credits" or "license()" for more information.

IDLE 1.2b3
 >>> import sys
 >>> sys.path
['C:\\Python25\\Lib\\idlelib', 'C:\\WINDOWS\\system32\\python25.zip',
'C:\\Python25\\DLLs', 'C:\\Python25\\lib', 'C:\\Python25\\lib\\plat-win',
'C:\\Python25\\lib\\lib-tk', 'C:\\Python25', 
'C:\\Python25\\lib\\site-packages',
'C:\\Python25\\lib\\site-packages\\wx-2.6-msw-ansi']
 >>>
---
Question: How did I end up with the second item in path?
Is that a zip file?
There is no such a file in system32.
What would be the correct way to set path to assist the search?
Thanks for any advice.

----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From mystilleef at gmail.com  Wed Sep  6 06:29:08 2006
From: mystilleef at gmail.com (mystilleef)
Date: 6 Sep 2006 03:29:08 -0700
Subject: threading support in python
In-Reply-To: <mailman.10337.1157383940.27775.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<mailman.10337.1157383940.27775.python-list@python.org>
Message-ID: <1157538548.439859.115900@h48g2000cwc.googlegroups.com>

You can use multiple processes to simulate threads via an IPC
mechanism. I use D-Bus to achieve this.

http://www.freedesktop.org/wiki/Software/dbus

km wrote:
> Hi all,
> Are there any alternate ways of attaining true threading in python ?
> if GIL doesnt go  then does it mean that python is useless for
> computation intensive scientific applications which are in need of
> parallelization in threading context ?
>
> regards,
> KM
> ---------------------------------------------------------------------------
> On 4 Sep 2006 07:58:00 -0700, bayerj <bayerj at in.tum.de> wrote:
> > Hi,
> >
> > GIL won't go. You might want to read
> > http://blog.ianbicking.org/gil-of-doom.html .
> >
> > Regards,
> > -Justin
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> >



From fredrik at pythonware.com  Wed Sep 13 12:04:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 18:04:32 +0200
Subject: Is there a way to find IP address?
In-Reply-To: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
Message-ID: <ee9a6h$bbe$1@sea.gmane.org>

Lad wrote:

> Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
> If a user  is behind a proxy, I will log  proxy's IP address only.
> Is there a way how to find a real IP user's address?

os.environ["HTTP_X_FORWARDED_FOR"]

(but that can easily be spoofed, and is mostly meaningless if the user 
uses local IP addresses at the other side of the proxy, so you should 
use it with care)

</F>



From eric.goetzinger at seagate.com  Thu Sep 21 13:43:50 2006
From: eric.goetzinger at seagate.com (goetzie)
Date: 21 Sep 2006 10:43:50 -0700
Subject: Trouble Passing Array of Strings (using Numeric) to C Extension
	Module
In-Reply-To: <mailman.344.1158780560.10491.python-list@python.org>
References: <1158767555.487359.12520@m7g2000cwm.googlegroups.com>
	<mailman.344.1158780560.10491.python-list@python.org>
Message-ID: <1158860630.205406.266780@d34g2000cwd.googlegroups.com>


Travis E. Oliphant wrote:
>
> PyString_Check( *( ( PyObject ** )( pArray->data ) ) );
>

Thank you very much Travis!  My mistake is now quite obvious (and
should have been right from the start).

Regarding NumPy, I probably should upgrade from Numeric.  It's just
hard to change something that is currently working fine for me and my
users.



From http  Wed Sep 13 21:48:18 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 18:48:18 -0700
Subject: threads and return values
References: <mailman.52.1158196087.10491.python-list@python.org>
Message-ID: <7xmz932p7h.fsf@ruckus.brouhaha.com>

Timothy Smith <timothy at open-networks.net> writes:
> t = Thread(target=lambda:
> WeeklyReportPDF.MakeReport(self.UserNameValue,
> self.PassWordValue,ReportType,self.db))
> t.start()
> 
> which works just fine, BUT how do i get access to the return value of
> WeeklyReportPDF.MakeReport() ??

You can't.  Make the function send you a message through some
synchronized communication mechanism.  The Pythonic favorite way to do
that is with Queue, even when it's just one value (untested):

    import Queue
    q = Queue()
    t = Thread(target = lambda q=q: q.put(WeeklyReportPDF.MakeReport(...)))
    t.start()
    ...

Now if you say

    value = q.get()

the caller will block until WeeklyReportPDF.MakeReport returns.  If
you say

    value = q.get(False)

the False argument says not to block, so if WeeklyReportPDF.MakeReport
hasn't yet returned, q.get will raise the Queue.Empty exception, which
you can then catch and deal with.  Another arg lets you specify a
timeout:

    value = q.get(False, 3.0)

blocks for up to 3 seconds, then raises Queue.Empty.


From g.brandl-nospam at gmx.net  Sun Sep 17 15:20:11 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 17 Sep 2006 21:20:11 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
Message-ID: <eek75d$otr$1@news.albasani.net>

Ilias Lazaridis wrote:
> I understand that I can use __metaclass__ to create a class which
> modifies the behaviour of another class.
> 
> How can I add this metaclass to *all* classes in the system?
> 
> (In ruby I would alter the "Class" class)

You'd have to set

__metaclass__ = whatever

at the top of each module whose classes are to get the new behavior.

You can't alter classes which you don't control or create in your code.

Georg


From lycka at carmen.se  Wed Sep 27 06:04:16 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 27 Sep 2006 12:04:16 +0200
Subject: Replace single character at given position
In-Reply-To: <45106741.8080905@websafe.com>
References: <ke46u3-b2j.ln1@thunderbird.tld> <45106741.8080905@websafe.com>
Message-ID: <efdib1$des$1@wake.carmen.se>

Larry Bates wrote:
>> How do I replace a single character in a string at a given position?

You can't. Strings can't be mutated in Python how ever hard you try.
The string type is immutable. (Of course, I suspect you can write a
horrible C extension that would help you cheat. Yuk!)

You need to create a *new* string object with the properties you like.
This is what you do below. As soon as you use "s1=...", you are
rebinding "s1" to a (typically) different string object than it was
bound to before.

If you think about this, it will probably also answer the "does Python
use call by reference or call by value" questions that will eventually
pop up in your head if you come from C.

>> From programming languages like C I expect something like that:

What you need to realize is that objects and assignments are
different in Python and in C. In C, "a=x" basically means "put
the value identified by x in the location defined by a". In
Python, "a=x" basically means "bind the name a to the object
identified by x". See http://pyref.infogami.com/naming-and-binding

> You can do this:
> 
> s1=s1.replace('x','y', 1) # Only replace the first x with y
> 
> or
> 
> s1l=list(s1)
> s1l[1]='y'
> s1=''.join(s1l)

Both these examples creates new string objects and rebind the
name s1 to these new objects. In other words, if you had "s2=s1"
on a previous line, the expression "s1==s2" will be false after
the code above has been executed.


From ldo at geek-central.gen.new_zealand  Mon Sep 25 06:54:58 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 22:54:58 +1200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
Message-ID: <ef8cg8$fui$3@lust.ihug.co.nz>

In message <1158951061.539594.164040 at i3g2000cwc.googlegroups.com>, T wrote:

> We all know that there are many softwares that require some license key
> or registration key to enable them.  How does one implement something
> like this in python?

Reliably? Can't be done, in Python or any other language.


From tjreedy at udel.edu  Wed Sep 27 13:18:09 2006
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 27 Sep 2006 13:18:09 -0400
Subject: Surprise using the 'is' operator
References: <mailman.746.1159307893.10491.python-list@python.org><451A9824.6040106@tobiah.org>
	<efe7v1$8ls$1@news.albasani.net>
Message-ID: <efebog$p08$1@sea.gmane.org>


"Georg Brandl" <g.brandl-nospam at gmx.net> wrote in message 
news:efe7v1$8ls$1 at news.albasani.net...
> tobiah wrote:
>> Suppose I fill an list with 100 million random integers in the range
>> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>> of '12345' pointed to the same integer object?  Why should more be made,
>> when they all do the same thing, and are not subject to change?
>
> Because for typical usage of integers (which doesn't include your 
> example),
> it is more expensive to check if there's already an integer with that 
> specific
> value out there than to create a new one.

I am not sure what you are saying.  Every (C) int is checked to see if it 
is in the preallocated range before making a new Python int object.  The 
reason for the low limit is the various time-space tradeoffs applied across 
the entire range of programs.

Terry Jan Reedy





From steve at holdenweb.com  Tue Sep 12 14:45:01 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 19:45:01 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158083866.689838.150070@p79g2000cwp.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>
	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>
Message-ID: <ee6v64$5l4$1@sea.gmane.org>

mensanator at aol.com wrote:
> Fredrik Lundh wrote:
> 
>>mensanator at aol.com wrote:
>>
>>
>>>So, knowing that, would you agree that
>>>
>>><quote Python Library Reference 13.13>
>>>If switching to a larger database such as PostgreSQL or Oracle
>>>is later necessary, the switch should be relatively easy.
>>></quote>
>>>
>>>is misleading if not outright untruthful?
>>
>>eh?  if you've never migrated *from* SQLite to some other database, how
>>can *you* possibly know *anything* about how hard or easy it is?
> 
> 
> Because I can extrapolate. I *know* before even trying it that
> if I export all my data from a sqlite db to a csv file and then try
> to import it into Access that there will be problems if the fields
> aren't static typed.
> 
> That's one of the reasons why I was such a good test engineer.
> I could anticipate problems the design engineers didn't think of
> and I would deliberately provoke those problems during testing
> and crash their hardware/software.
> 
> I wasn't very popular.
> 
Strange, that, what with your excess of personal charm and great powers 
of diplomacy. People can be so touchy, can't they?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Fri Sep 22 16:19:49 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 20:19:49 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.440.1158899115.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<d8IQg.4153$6S3.3658@newssvr25.news.prodigy.net>
	<mailman.440.1158899115.10491.python-list@python.org>
Message-ID: <FzXQg.3942$IA.1451@newssvr11.news.prodigy.com>

Robert Kern wrote:
> James Stroud wrote:
> 
>> Well I added those arguments to $LDFLAGS, but it seemed like a pretty 
>> miserable hack, especially the "-shared" part.
> 
> 
> Hmmm. Did you have $LDFLAGS set to anything (or more likely, nothing) 
> before? I.e. did you have something like this?
> 
>   export LDFLAGS=""
>   python setup.py build
> 
> If such environment variables are present, I think that numpy.distutils 
> may clobber the values that are inferred from the configuration.
> 

Didn't see this message last night.

No, my $LDFLAGS were set. I haven't tried unsetenv'ing them (I use tcsh 
as a consequence of my anti-bash religious upbringing).

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From antroy at gmail.com  Sat Sep 30 03:20:14 2006
From: antroy at gmail.com (Ant)
Date: 30 Sep 2006 00:20:14 -0700
Subject: creating a small test server on my local computer
In-Reply-To: <efjskl$23j$1@mlucom4.urz.uni-halle.de>
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
	<efjskl$23j$1@mlucom4.urz.uni-halle.de>
Message-ID: <1159600814.255059.56690@m73g2000cwd.googlegroups.com>


Mirco Wahab wrote:
> Thus spoke John Salerno (on 2006-09-29 21:13):
...
> My advice would be (because Apache installations on
> WinXP don't usually support Python (except pulling
> the whole thing into each CGI invocation) - download
> and install a VMWare Player

This sounds a horribly complicated way of doing things. If you read the
OP's post, it seems he is simply trying to serve straight HTML pages
(but with Server Side Includes) locally for testing, rather than having
to pester his operations guys to put them up on the company servers.

If it's just HTML and SSI, then Apache is the easy answer on XP. The
download is a simple .msi installer, and you'll just be able to drop
the html files in the htdocs directory to start serving them.
(http://httpd.apache.org/download.cgi)

If you look at the docs for a majority of the Python webservers, they
recommend putting them behind Apache for production use, and for good
reason, Apache httpd is probably the most mature, stable and feature
rich web server out there.

(Incidentally, adding python support with mod_python is a breeze on XP
- just another installer and uncommenting a couple of lines in the
httpd.conf file. But then for actual python development it may be
simpler to get started using a framework such as TurboGears or Django,
which both have very good introductory tutorials.)



From jxjohns at lifeway.com  Wed Sep 27 16:13:55 2006
From: jxjohns at lifeway.com (Jim)
Date: 27 Sep 2006 13:13:55 -0700
Subject: Extra Newby question - Trying to create md5 File Listing
In-Reply-To: <m9ySg.3193$o71.3047@newsread3.news.pas.earthlink.net>
References: <mailman.798.1159370982.10491.python-list@python.org>
	<5ZxSg.2105$Y24.124@newsread4.news.pas.earthlink.net>
	<m9ySg.3193$o71.3047@newsread3.news.pas.earthlink.net>
Message-ID: <1159388035.475627.315790@i42g2000cwa.googlegroups.com>

Thanks Dennis, I'm feeling very stupid.  You're right about the config
file containing drive/path/filenames (eg. c:\python24\*.exe or
whatever).  I want to output a text file that contains records like
c:\python24\pythonw.exe[tab]md5 value, ... next file record.  The
following snippet works but I don't know how to loop through using the
config value to get e glob for each file.  I'll keep working at it.

filelist = glob.glob('c:\\python24\\*.exe')

# print 'filelist is', filelist

for fn in filelist:
  data = file(fn,'rb').read()
  hexstring = md5.md5(data).hexdigest()
  f.write(fn + '\t' + hexstring + '\n')

f.close()

Thanks.



From yakumo9275 at gmail.com  Wed Sep 13 17:36:32 2006
From: yakumo9275 at gmail.com (stu)
Date: 13 Sep 2006 14:36:32 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.48.1158174903.10491.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
Message-ID: <1158183392.526021.212220@d34g2000cwd.googlegroups.com>


Wildemar Wildenburger wrote:
>
> Finally! I usually try to stay out of these discussions; yet I'm always
> disappointed at how few people seem to be using jEdit and how long it
> takes them to come out of their holes.

well when people start reccomending things like textpad which is crap.
textpad requires payment, and if someone is gonna pay for it
they might as well buy ultraedit instead..

but they need to atleast checkout jedit first :)

with its plugins for jython + jpydebug...

-stu



From john at castleamber.com  Wed Sep 20 14:02:35 2006
From: john at castleamber.com (John Bokma)
Date: 20 Sep 2006 18:02:35 GMT
Subject: Do we need to delete "ImageDraw.Draw" after using it?
References: <1158773966.613009.11470@e3g2000cwe.googlegroups.com>
Message-ID: <Xns984484ADDEE12castleamber@130.133.1.4>

"Daniel Mark" <danielmarkhot at gmail.com> wrote:

> Is there any general rule that we must delete the object after using
> it?

In general: if the object is not destroyed when it goes out of scope (but 
later) and uses precious resources [1], or if a special clean up is 
required, you should delete it explicitly.


[1] like file handles

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From fredrik at pythonware.com  Fri Sep  1 10:02:55 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 16:02:55 +0200
Subject: dictionaries - returning a key from a value
References: <002101c6cdba$f37c2b50$a8e7ca2b@guerrillagames.com><mailman.10250.1157114428.27775.python-list@python.org>
	<1157118844.645458.159630@p79g2000cwp.googlegroups.com>
Message-ID: <ed9eif$c18$1@sea.gmane.org>

bearophileHUGS at lycos.com wrote:

> keys = [key for key in sampledict if sampledict[key] == '1974']
>
> Or better, given:
>
> sampledict = {'the Holy Grail':1975, 'Life of Brian':1979,
>              'Party Political Broadcast':1974,'Mr. Neutron':1974,
>              'Hamlet':1974, 'Light Entertainment War':1974}
>
> keys = [key for key,year in sampledict.iteritems() if year == 1974]

better in what sense?

timeit -s "from test import sampledict" "keys = [key for key in sampledict if sampledict[key] == 
1974]"
100000 loops, best of 3: 2.27 usec per loop

timeit -s "from test import sampledict" "keys = [key for key,year in sampledict.iteritems() if year 
== 1974]"
100000 loops, best of 3: 2.56 usec per loop

</F> 





From phd at phd.pp.ru  Fri Sep  8 15:42:26 2006
From: phd at phd.pp.ru (Oleg Broytmann)
Date: Fri, 8 Sep 2006 23:42:26 +0400
Subject: ANN: SQLObject 0.7.1rc1
Message-ID: <20060908194226.GB16995@phd.pp.ru>

Hello!

I'm pleased to announce the 0.7.1rc1 release of SQLObject.

What is SQLObject
=================

SQLObject is an object-relational mapper.  Your database tables are
described as classes, and rows are instances of those classes.  SQLObject
is meant to be easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB
(also known as SAPDB).


Where is SQLObject
==================

Site:
http://sqlobject.org

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.7.1rc1

News and changes:
http://sqlobject.org/docs/News.html


What's New
==========

Features & Interface
--------------------

* Added support for psycopg2 and MSSQL.

* Added TimeCol.

* Implemented RLIKE (regular expression LIKE).

Small Features
--------------

* Select over RelatedJoin.

* SQLite foreign keys.

* Postgres DB URIs with a non-default path to unix socket.

* Allow the use of foreign keys in selects.

* Implemented addColumn() for SQLite.

* With PySQLite2 use encode()/decode() from PySQLite1 for BLOBCol if available; else use base64.

Bug Fixes
---------

* Fixed a longstanding problem with UnicodeCol - at last you can use unicode
  strings in .select() and .selectBy() queries. There are some limitations,
  though.

* Cull patch (clear cache).

* .destroySelf() inside a transaction.

* Synchronize main connection cache during transaction commit.

* Ordering joins with NULLs.

* Fixed bugs with plain/non-plain setters.

* Lots of other bug fixes.


For a more complete list, please see the news:
http://sqlobject.org/docs/News.html

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.


From fredrik at pythonware.com  Sun Sep 24 06:53:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 12:53:32 +0200
Subject: A critique of cgi.escape
In-Reply-To: <ef5ncc$uus$1@news.albasani.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<ef5lb9$h1k$2@lust.ihug.co.nz>
	<ef5ncc$uus$1@news.albasani.net>
Message-ID: <ef5o3b$tah$2@sea.gmane.org>

Georg Brandl wrote:

> A function is broken if its implementation doesn't match the documentation.

or if it doesn't match the designer's intent.  cgi.escape is old enough 
that we would have noticed that, by now...

</F>



From ray_usenet at yahoo.com  Sun Sep  3 22:39:35 2006
From: ray_usenet at yahoo.com (Ray)
Date: 3 Sep 2006 19:39:35 -0700
Subject: Timeline for Python?
In-Reply-To: <mailman.10185.1157035875.27775.python-list@python.org>
References: <mailman.10185.1157035875.27775.python-list@python.org>
Message-ID: <1157337575.041544.208840@m73g2000cwd.googlegroups.com>

Sebastian Bassi wrote:
> Hello all,
>
> I am working on a Python book, since it could be completed in about a
> year (writing time + edition + publishing) or more, I would like to
> know what version to target since I don't want to release a book that
> will be outdated just after is printed.
> I use 2.4 for everyday work but most webservers still carry 2.2 (and
> most programs runs w/o any modification, since I don't tend to use new
> features), but publishers know that people like to buy lasted version
> books.

But also there are a lot of books about 2.2 already--I've got quite a
number of them and if I really have to go down to 2.2 I can always
return back to them. For new books definitely 2.5--how can you possibly
target something that will have an alpha *probably* released sometime
in 2007? And may be released in 2008 or even 2009? Your book may be
obsolete the moment it comes out if you're targeting an alpha.

> So, if the book is published in October 2007, should feature Python 3
> or Python 2.5?
> I did read http://www.python.org/dev/peps/pep-3000/ but I still not
> sure about timeline.

>From the document, looks like even BDFL ain't sure, just a general
estimate of sometime in 2007 and release in maybe 2008 if we're lucky
:)

>
> Best regards,
> SB.
>
> --
> Bioinformatics news: http://www.bioinformatica.info
> Lriser: http://www.linspire.com/lraiser_success.php?serial=318



From skip at pobox.com  Sat Sep  9 18:46:42 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sat, 9 Sep 2006 17:46:42 -0500
Subject: OT: What encoding is this?
Message-ID: <17667.17490.12612.591715@montanaro.dyndns.org>


Way off-topic for Python, but can someone tell me what encoding was used in
this web page:

    http://www.loppen.dk/side.php?navn=getin

I'm guessing ISO-8859-15, but the page doesn't indicate and it's none of the
ones available in Safari.

Thanks,

Skip


From kay.schluehr at gmx.net  Tue Sep 12 15:29:15 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 12 Sep 2006 12:29:15 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
	<1158003527.979849.240080@m73g2000cwd.googlegroups.com>
Message-ID: <1158089355.730894.51330@m73g2000cwd.googlegroups.com>

Pierre Quentel wrote:

> - SnakeSQL : another SQL engine, less mature I think and very slow when
> I tested it

And strange bugs when I used it.

> - buzhug : Pythonic syntax (uses list comprehensions or methods like
> create(), select() on the db object), much faster than all the above.
> I'm obviously biaised : I wrote it...

Looks cool! Apperently there are still mavericks who believe in "Python
first" while all others prefer refering to "standards" or what they
personally believe those standards to be [1]

Just one stupid remark since the limits of my language are the limits
of my world: I've not the slightest association with the seemingly
nonsense word "buzhug" and don't even know how to pronounce it
correctly. Would you have the kindness to enlighten me/us ?


[1]
http://groups.google.com/group/comp.lang.python/browse_frm/thread/8ba5fb96d3117e46/6410ac0dbbf23931?hl=en#6410ac0dbbf23931



From sjdevnull at yahoo.com  Wed Sep 27 17:48:11 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 27 Sep 2006 14:48:11 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <7xven92i2z.fsf@ruckus.brouhaha.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
	<roy-055E4F.20055226092006@reader2.panix.com>
	<1159337418.630332.80100@k70g2000cwa.googlegroups.com>
	<7xven92i2z.fsf@ruckus.brouhaha.com>
Message-ID: <1159393691.516824.66050@k70g2000cwa.googlegroups.com>

Paul Rubin wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > > > * C
> > > > * A static functional language (ML, Haskell, etc)
> > > > * Lisp or scheme Scheme
> > > > * A static class-oriented language (Java, C++, etc)
> > > > * A dynamic OO language (Python, ruby, smalltalk, etc)
> > > >
> > > > and at least a brief look at, say, Forth and Prolog.
> > >
> > > Interesting list.  Of those, I've done tons of C, just enough lisp to get
> > > the feel of it, lots of C++, and of course Python.  I've never done any
> > > functional stuff.
> >
> > You should.  It's very enlightening.
>
> Very interesting post and list.  I think I'd add at least one assembly
> language.

Yes, definitely.

>  I hate to say it but I think I'd remove Python.  As much as
> Python has helped me get useful and practical things done, from a
> learning point of it, as much as the developers deny it, I'd say it's
> basically an OO Lisp dialect with syntax sugar.  I found it completely
> natural and pleasant to program in almost immediately, because I'd
> already been using Lisp and Java.  I haven't used Smalltalk or Ruby so
> can't comment.

OO programming in dynamic languages can be _very_ different from in
non-OO languages.  I'm hesitant to put CLOS on the list as a lot of the
mind-expanding value of Lisp can/should be achieved without it and I'd
rather not confuse a person learning a couple of languages by having
them try to keep OO-styled Lisp and traditional-style Listp straight.

Hence I think Smalltalk or python/ruby are better choices for learning
dynamic OO programming.

> I wonder why you chose ML over Haskell in a few other posts.

Personal bias, my university was more ML-centric than Haskell.  At
least I didn't show an even bigger bias by putting Dylan on the list.
:-)

Either ML or Haskell is a fine choice for learning strongly statically
typed functional programming.



From fredrik at pythonware.com  Mon Sep 25 09:30:27 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 15:30:27 +0200
Subject: Job offer python programmer
References: <1159189896.956716.84320@k70g2000cwa.googlegroups.com>
Message-ID: <ef8llj$olr$1@sea.gmane.org>

johannes at axandra.com wrote:

> We're looking for a software developer Python/PHP/Ajax/MySQL for web
> applications (full time job). Maybe someone in this group might be
> interested in this job.

don't forget to post to:

    http://www.python.org/community/jobs/

as well! (see the HOWTO link on that page for details)

</F> 





From filipporandello at yahoo.com  Thu Sep 21 09:04:20 2006
From: filipporandello at yahoo.com (filippo randello)
Date: Thu, 21 Sep 2006 06:04:20 -0700 (PDT)
Subject: http://mail.python.org/pipermail/python-list/2006-January/320434.html
Message-ID: <20060921130420.93281.qmail@web36513.mail.mud.yahoo.com>

Hello,

if after your command:
ie.Document.login_form.submit() 

I write:
doc = ie.Document
s = doc.documentElement.outerHTML
print s

I can see the HTML of the document before the submit
command, but I would like to see the HTML of the page
after the submit command: do you know how to solve
this problem?

Cheers.




form:
http://mail.python.org/pipermail/python-list/2006-January/320434.html


################################
# Quick and dirty script example

from win32com.client import DispatchEx
import time

def wait(ie):

    while ie.Busy:
        time.sleep(0.1)
    while ie.Document.ReadyState != 'complete':

        time.sleep(0.1)

#instaniate a new ie object so you can call it's
methods and properties...etc..
ie = DispatchEx('InternetExplorer.Application')

# You need to make it Visible
ie.Visible = 1

# Navigate to the page
ie.Navigate('mail.yahoo.com')

wait(ie) # important to wait for the doc to load


# Enter User info and submit the form since it uses
submit # If the button had a name attribute # You
could also use 
ie.Document.login_form.buttonName.Click

# ieObject.Document.FormName.TexboxName.value ="??"
ie.Document.login_form.username.value="MyName"
ie.Document.login_form.passwd.value="Mypasswd"
ie.Document.login_form.submit()


Enjoy
Rob M
http://pamie.sourceforge.net



__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


From ldo at geek-central.gen.new_zealand  Sun Sep 24 06:07:26 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 22:07:26 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
Message-ID: <ef5lb9$h1k$2@lust.ihug.co.nz>

In message <mailman.518.1159087749.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Jon Ribbens wrote:
> 
>> Making cgi.escape always escape the '"' character would not break
>> anything, and would probably fix a few bugs in existing code. Yes,
>> those bugs are not cgi.escape's fault, but that's no reason not to
>> be helpful. It's a minor improvement with no downside.
> 
> the "improvement with no downside" would bloat down the output for
> everyone who's using the function in the intended way, and will also
> break unit tests.

I don't understand this "bloat down" nonsense. Any tests that would break
are obviously testing the wrong thing.

>  > One thing that is flat-out wrong, by the way, is that cgi.escape()
>  > does not encode the apostrophe (') character.
> 
> it's intentional, of course: you're supposed to use " if you're using
> cgi.escape(s, True) to escape attributes.

Attributes can be quoted with either single or double quotes. That's what
the HTML spec says. cgi.escape doesn't correctly allow for that. Ergo,
cgi.escape is broken. QED.

> btw, you're both missing that cgi.escape isn't good enough for general
> use anyway, since it doesn't deal with encodings at all.

Why does it need to?



From Eric_Dexter at msn.com  Tue Sep  5 18:35:27 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 5 Sep 2006 15:35:27 -0700
Subject: Higher-level OpenGL modules
In-Reply-To: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
References: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
Message-ID: <1157495726.835786.243180@p79g2000cwp.googlegroups.com>

http://pyopengl.sourceforge.net/ I wouldn't begin to tell you how to
install this..  Looks like russian roulette with virus since the .dll's
are not available and are not linked from the site but are available
from lots of places in the google search.  Looks like there is a
copyright that might prevent you from distributing copies of your
program with the other library.  I am not an expert of pyexe though and
what that does.  I also noticed scipy and that seemed to work well,
shame there isn't templates for the objects in boa-constructor


https://sourceforge.net/project/showfiles.php?group_id=156455
http://www.dexrow.com..
Leon wrote:
> Greetings,
>
> Does anybody know of or is working on any python modules that allow for
> a direct but higher-level interface to OpenGL? For example, quick
> functions to draw lines, curves, and basic shapes; define hsb color
> mode; fill and stroke operations; easy loading of images, svg files,
> etc (much like the processing language -
> http://www.processing.org/reference/index.html).  The closest thing I
> could find was devachan - http://www.cesaremarilungo.com/sw/devachan/,
> but its very limited. Any response would be greatly appreciated.
> 
> Thanks
> Leon



From taleinat at gmail.com  Sat Sep 16 22:13:58 2006
From: taleinat at gmail.com (Tal Einat)
Date: 16 Sep 2006 19:13:58 -0700
Subject: eval(repr(object)) hardly ever works
In-Reply-To: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <1158459237.957557.72460@h48g2000cwc.googlegroups.com>


Matthew Wilson wrote:
> I understand that idea of an object's __repr__ method is to return a
> string representation that can then be eval()'d back to life, but it
> seems to me that it doesn't always work.
>
[snip]
>
> Any thoughts?
>

This is actually an interesting issue when you're working with Python
interpreters. For example, an object with a simple repr() which is code
to create an identical object is easy to use as a key in a dictionary.

I ran into this a while back when I was tinkering with IDLE's
auto-completion module, and ended up writing some code which checks if
an object's repr() is "reversible" or not.

- Tal
reduce(lambda m,x:[m[i]+s[-1] for i,s in enumerate(sorted(m))],
       [[chr(154-ord(c)) for c in '.&-&,l.Z95193+179-']]*18)[3]



From filipwasilewski at gmail.com  Fri Sep 15 19:51:54 2006
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: 15 Sep 2006 16:51:54 -0700
Subject: xmlrpc, extract data from http headers
References: <mailman.133.1158333835.10491.python-list@python.org>
Message-ID: <1158364314.135181.129740@d34g2000cwd.googlegroups.com>

Milos Prudek wrote:
> I perform a XML-RPC call by calling xmlrpclibBasicAuth which in turn calls
> xmlrpclib. This call of course sends a HTTP request with correct HTTP
> headers. The response is correctly parsed by xmlrpclib, and I get my desired
> values.
>
> However, I also need to get the raw HTTP headers from the HTTP response. There
> is a cookie in the HTTP response and I need to read that cookie.
>
> How could I do that?

Overload the _parse_response method of Transport in your
BasicAuthTransport and extract headers from raw response. See the
source of xmlrpclib.py in the standard library for details.

cheers,
fw



From noah at noah.org  Fri Sep  8 18:59:23 2006
From: noah at noah.org (Noah)
Date: 8 Sep 2006 15:59:23 -0700
Subject: super and __init__
In-Reply-To: <1157752811.316633.91030@b28g2000cwb.googlegroups.com>
References: <1157741577.676925.288290@h48g2000cwc.googlegroups.com>
	<1157752811.316633.91030@b28g2000cwb.googlegroups.com>
Message-ID: <1157756363.887826.97860@h48g2000cwc.googlegroups.com>


Jason wrote:
> Noah wrote:
> > Am I the only one that finds the super function to be confusing?
>
> Unfortunately, I don't see a way of avoiding this problem with super().
>  Any such super command resolves in the mro order.  Since the mro order
> invoked at a certain class can change depending on its subclasses,
> there's no way for the class to predict at design time what super() is
> going to return.  You can predict what will be returned with your class
> hierarchy, but another programmer can create a multiple-inheritence
> class that will change the result.
>
> Explicitly calling the base class is much easier, but a given class
> method can be called multiple times in that case.

If I know that multiple calls to my base class __init__ is harmless
and multiple calls to my derrived class __init__ is harmless then
is it best to just go ahead and use the old style of explicitly calling
the __init__? I'm just worried about using the old style base __init__
call
with new style objects.

Since inheritance is so fundemental to an object oriented language
it's bad that Python makes it so easy to get the constructor wrong.

Yours,
Noah



From sjmachin at lexicon.net  Sun Sep  3 00:32:18 2006
From: sjmachin at lexicon.net (John Machin)
Date: 2 Sep 2006 21:32:18 -0700
Subject: overriding character escapes during file input
In-Reply-To: <mailman.10295.1157255409.27775.python-list@python.org>
References: <mailman.10295.1157255409.27775.python-list@python.org>
Message-ID: <1157257938.526720.52780@74g2000cwt.googlegroups.com>


David J Birnbaum wrote:
> Dear Python-list,
>
> I need to read a Unicode (utf-8) file that contains text like:
> > blah \fR40\fC blah
> I get my input and then process it with something like:
> > inputFile = codecs.open(sys.argv[1],'r', 'utf-8')
> >
> > for line in inputFile:
> When Python encounters the "\f" substring in an input line, it wants to
> treat it as an escape sequence representing a form-feed control
> character,

Even if it were as sentient as "wanting" to muck about with the input,
it doesn't. Those escape sequences are interpreted by the compiler, and
in other functions (e.g. re.compile) but *not* when reading a text
file.

Example:
|>>> guff = r"blah \fR40\fC blah"
|>>> print repr(guff)
'blah \\fR40\\fC blah'
|>>> # above is ASCII so it is automatically also UTF8

Comment: It contains backslash followed by 'f' ...

|... fname = "guff.utf8"
|>>> f = open(fname, "w")
|>>> f.write(guff)
|>>> f.close()
|>>> import codecs
|>>> f = codecs.open(fname,'r', 'utf-8')
|>>> guff2 = f.read()
|>>> print guff2 == guff
|True
No interpretation of the r"\f" has been done.

> which means that it gets interpreted as (or, from my
> perspective, translated to) "\x0c". Were I entering this string myself
> within my program code, I could use a raw string (r"\f") to avoid this
> translation, but I don't know how to do this when I am reading a line
> from a file.

What I suggest you do is:
   print repr(open('yourfile', 'r').read()
[or at least one of the offending lines]
and inspect it closely. You may find (1) that the file has formfeeds in
it or (2) it has r"\f" in in it and you were mistaken about the
interpretation or (3) something else.

If you maintain (3) is the case, then make up a small example file,
show a dump of it using print repr(.....) as above, plus the (short)
code where you decode it and dump the result.

HTH,
John



From rowen at cesmail.net  Fri Sep  8 16:08:15 2006
From: rowen at cesmail.net (Russell E. Owen)
Date: Fri, 08 Sep 2006 13:08:15 -0700
Subject: py2app question: Resources/Python -> Resources/lib/python2.4
Message-ID: <rowen-E35EDB.13081508092006@gnus01.u.washington.edu>

I was using an older version of py2app to distribute an application.
This placed the python library code in TUI.app/Contents/Resources/Python

I just upgraded to py2app 0.3.5 and now I find the same stuff is being 
put in TUI.app/Contents/Resources/lib/python2.4

This change breaks my code because resource files need to go in the same 
location, though I can certainly modify the code that copies the 
resource files.

My main question is: am I seeing this change because I'm doing something 
wrong (in which case I'd like to fix it)? Or is it just the new way to 
do things (in which case I can modify my resource copying code)?

If it's the new way to do things, is there a recommended way to find 
this directory automatically (or copy directory trees of files into it 
automatically without knowing its name) -- to insulate myself against 
future such changes?

-- Russell


From onurb at xiludom.gro  Fri Sep 29 13:25:06 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 29 Sep 2006 19:25:06 +0200
Subject: windev vs python SOS
In-Reply-To: <1159547006.941109.237430@m73g2000cwd.googlegroups.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159528038.548533.304250@c28g2000cwb.googlegroups.com>
	<451d15cf$0$23901$636a55ce@news.free.fr>
	<1159547006.941109.237430@m73g2000cwd.googlegroups.com>
Message-ID: <451d56f3$0$22903$636a55ce@news.free.fr>

aaaWindev at gmail.com wrote:
> Hi,
> 
> Bruno Desthuilliers a ?crit :
>> I've never met a programmer that "loved" Windev.
> 
> I have met some here (I'm the guy with a mustache-just kidding but
> actually I was there).
> 
> http://www.pcsoft.fr/pcsoft/tdftech/2006/images/Paris/07-IMG_5853.jpg
> 
> WinDev is widely used in France

"widely used" ? Widely marketed, for sure, but last time I had to find a
job, there where not that much Windev positions (3 in one year in the
fifth french city) - much less than Java or .NET or (whatever your
mainstream language here) - or even PHP/Javascript FWIW. And it was not
better in other major french locations...

(and please avoid us the usual marketing crap - been here, done that)

> and that's a thing because a lot of
> french programmers think that english tools "have to be better".

I think that's one of the dumbiest thing I've ever read.

Thread's over for me - keeping on polluting this group with anything
related to this crap is a total waste of resources.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From enigmadude at rock.com  Sun Sep 10 03:25:46 2006
From: enigmadude at rock.com (enigmadude)
Date: 10 Sep 2006 00:25:46 -0700
Subject: No ValueError for large exponents?
References: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
	<edon5s$dnb$1@news.albasani.net>
Message-ID: <1157873146.541070.185330@m79g2000cwm.googlegroups.com>

Georg Brandl wrote:
> enigmadude wrote:
> > As many have heard, IronPython 1.0 was released. When I was looking
> > through the listed differences between CPython and IronPython, the
> > document mentioned that using large exponents such as 10 **
> > 735293857239475 will cause CPython to hang, whereas IronPython will
> > raise a ValueError.
>
> What message does that value error have?
>
> If it's a memory issue, the operation should raise MemoryError (at
> least in CPython).
>
> Georg

I haven't run IronPython yet, but the "Differences" document says that
IronPython would raise a ValueError. It wasn't any more specific than
that. As far as CPython, I didn't wait long enough for it to raise a
MemoryError if it was going to raise one at all. From a user point of
view, CPython appeared to hang for about one minute, slowly raising CPU
usage and RAM usage, before I finally decided to just kill the process.
I don't know whether or not it would have completed 5 minutes later or
whether it would hang indefinitely, I haven't tested it. Although I may
be overreacting, I would wonder about the ramifications of something
like this hanging the interpreter (possible vector for DOS attack on an
webapp server, or even the machine itself if it balloons RAM usage?).
I'm not trying to be a doomsayer or anything, but I just want to know
how CPython handles extreme cases like this.



From simon at brunningonline.net  Tue Sep 26 06:30:15 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 26 Sep 2006 11:30:15 +0100
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efakif$idf$1@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
	<mailman.629.1159250957.10491.python-list@python.org>
	<efaj9p$fqq$2@lust.ihug.co.nz> <efakif$idf$1@lust.ihug.co.nz>
Message-ID: <8c7f10c60609260330v7730ec3s5fe6b36dd01a60a0@mail.gmail.com>

On 9/26/06, Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> All right, sorry, looks like they want to load the entire table into RAM and
> key it off the first field. Kind of defeats the point of having SQL, but
> there you go...

Keeping an in-memory cache of small, unchanging, frequently-read
tables is a very common, and often very effective performance tweak in
database driven systems.

-- 
Cheers,
Simon B,
simon at brunningonline.net


From vagrantbrad at yahoo.com  Fri Sep 22 15:32:39 2006
From: vagrantbrad at yahoo.com (vagrantbrad at yahoo.com)
Date: 22 Sep 2006 12:32:39 -0700
Subject: Tkinter button not working as expected
In-Reply-To: <mailman.448.1158918845.10491.python-list@python.org>
References: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>
	<mailman.448.1158918845.10491.python-list@python.org>
Message-ID: <1158953559.033768.3890@d34g2000cwd.googlegroups.com>

Thank you Fredrik.  It makes total sense now that you've explained it
this way.  I frustrated at my ignorance on the assignment issue :)




Fredrik Lundh wrote:
> vagrantbrad at yahoo.com wrote:
>
> > I've created a short test program that uses tkFileDialog.askdirectory
> > to help the user input a path into a tk entry widget.  The problem I'm
> > having is that when I run the code as listed below, the getPath
> > function is called when the program initially runs, not when the button
> > is pressed.
>
> the right side of an assignment is always evaluated before it is assigned, so
>
>     self.button["command"] = self.getPath(t)
>
> will call self.getPath(t) and then assign the return value to button["command"].
> quite obvious, if you think about it, right ?
>
> the easiest way to fix this is to add a local function that calls getPath, and
> use that as the button callback:
>
>     def callback():
>         self.getPath(t)
>     self.button["command"] = callback
>
> (if you want, you can inline the getPath code in the callback).
> 
> </F>



From steven.bethard at gmail.com  Wed Sep  6 15:31:59 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 06 Sep 2006 13:31:59 -0600
Subject: a new object definition
In-Reply-To: <44FBFFD9.9020406@imag.fr>
References: <ed8rce$ikn$1@trompette.imag.fr>
	<8OOdnRGqXrgDxWXZnZ2dnUVZ_vOdnZ2d@comcast.com>
	<44FBFFD9.9020406@imag.fr>
Message-ID: <A4KdnTeVsuCzv2LZnZ2dnUVZ_smdnZ2d@comcast.com>

Sylvain Ferriol wrote:
> with the 'make' syntax, it will be really easy to translate a program or 
> a data structure defined in XML format into python syntax.

Only if there are no ordering constraints and no need for multiple 
elements with the same name.  The make statement was built to mirror the 
the class statement, so the body is just executed in a regular Python 
dict.  Hence, you can only have one value for each name, and the order 
in which the names appear is not maintained.  There's some discussion of 
workarounds_ for this in the PEP, but they're pretty hackish.

.. _workarounds: 
http://www.python.org/dev/peps/pep-0359/#customizing-the-dict-in-which-the-block-is-executed

STeVe


From steve at holdenweb.com  Tue Sep 12 16:42:11 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 21:42:11 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158091389.180731.275700@m73g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<5sidnY0_IITrmZrYnZ2dnUVZ_oqdnZ2d@speakeasy.net>
	<1158091389.180731.275700@m73g2000cwd.googlegroups.com>
Message-ID: <ee761q$tro$2@sea.gmane.org>

mensanator at aol.com wrote:
> A.M. Kuchling wrote:
> 
>>On 12 Sep 2006 10:24:00 -0700,
>>	mensanator at aol.com <mensanator at aol.com> wrote:
>>
>>>So, knowing that, would you agree that
>>>
>>><quote Python Library Reference 13.13>
>>>If switching to a larger database such as PostgreSQL or Oracle
>>>is later necessary, the switch should be relatively easy.
>>></quote>
>>>
>>>is misleading if not outright untruthful?
>>
>>As the original author of that sentence, I don't think it's either
>>misleading or untruthful; 'relatively easy' gives me wiggle room.
> 
> 
> Ok, I appologize for saying that. Got a little carried away
> by the flames.
> 
> 
>>However, to fix your complaint, I've changed the paragraph to read:
>>
>>	SQLite is a C library that provides a lightweight disk-based
>>	database that doesn't require a separate server process and allows
>>	accessing the database using a nonstandard variant of the SQL query
>>	language. Some applications can use SQLite for internal data
>>	storage. It's also possible to prototype an application using SQLite
>>	and then port the code to a larger database such as PostgreSQL or
>>	Oracle.
>>
>>Of course, if you accept Fredrik's reading of the SQL standard, the
>>word 'nonstandard' in the revised text is incorrect; SQLite is
>>compliant with the standard but in an unusual way.  (But most readers
>>will interpret "nonstandard" as meaning "not like most other SQL
>>databases", so I'll let it stand.)
> 
> 
> And that was basically what I was originally asking for.
> 
> That and fixing the broken examples.
> 
> And maybe add a few more to illustrate SQLite manifest
> typing which is alien to a long time Access user.
> 
> Should I start a new thread (sans polemics) to discuss the
> examples?
> 
Why don't you? That would seem like a productive forward direction.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rrr at ronadam.com  Sat Sep  2 13:52:01 2006
From: rrr at ronadam.com (Ron Adam)
Date: Sat, 02 Sep 2006 12:52:01 -0500
Subject: OO on python real life tutorial?
In-Reply-To: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
Message-ID: <WzjKg.8799$Tl4.1237@dukeread06>

filippo wrote:
> Hello,
> 
> I coded my +10k lines app using Perl/Tk. It is something like a hotel
> software manager, it has a bunch of windows to manage the arrivals,
> bills etc etc. I want to port this on Python/WxPython but I'd like to
> get benefit of python, not just doing a row by row raw porting.
> 
> My problem is that I cannot figure out how OO could be useful in my
> case. Is there a OO tutorial out there to help me?
> 
> Thanks,
> 
> Filippo

One of the nice things about python is you can easily mix 00 and 
structured programming styles together as you need.

I would also suggest separating you data structures which can either be 
in 00 or structured tables from your interface.  The interface can 
definitely benefit from being in OO.

If you tie your data too tightly to your interface, it will make 
maintaining and or switching interfaces later a lot harder.

So you will have two groups of OO structures One for your data and one 
for your interface, and those can be in separate files.

I don't know much about hotel management, but you might have a table of 
  records, where each table object is a room, or area, that is a group 
of stuff to be managed together.

Your data structures would be along the line of...

(Very roughly to give you an idea of where you might start.)

      class record(object):
           attributes to store info about an object
           needing to be managed.
           ...

      class table(object):
           list of records that consist of an "area of
           responsibility" to be managed together such as the
           items in a room.
           ...
           methods to add, remove, get, and search table.
           ...

      class hoteldata(object):
           list of tables
           ...
           methods to add, remove, get, search tables.
           ...
           methods to generate report and graph data,
           but not methods to display such data, those would
           be in the interface group.


Each record may consist of the individual things in that area. Where an 
area is "an area of responsibility" that is to be assigned to an 
individual and or needs to be handled together.

And your interface OO structures would then consist of your widgets, 
windows, and forms you need in order to view, add, update, and delete 
records.

It may not be too difficult to reorganize your current program into one 
of this type as you will probably just be regrouping many of your 
functions into class's to handle your records and tables.

This is more of an accounting approach where you are using OO to model 
lists and records, and not a simulation where you would use OO to 
actually model the objects which can also work, but is much harder to do.

Cheers,
    Ron

















From rdm at rcblue.com  Thu Sep 14 12:31:00 2006
From: rdm at rcblue.com (Dick Moores)
Date: Thu, 14 Sep 2006 09:31:00 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1158249094.605954.93330@m73g2000cwd.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
	<mailman.92.1158241915.10491.python-list@python.org>
	<1158249094.605954.93330@m73g2000cwd.googlegroups.com>
Message-ID: <7.0.1.0.2.20060914092427.066feab8@rcblue.com>

At 08:51 AM 9/14/2006, stu wrote:

>Dick Moores wrote:
> > I'm trying out jEdit and UliPad. I got UliPad going right away and
> > I'm very pleased with it, but could I jump in here with a basic jEdit
> > question? How do you run a script?
> >
> > And one more. On the menus, the font is clear and large, but the
> > equivalent key combinations are written so small they are very
> > difficult for me to read. Is there a way to configure them to be
> > slightly larger? (I'd ask on the jEdit support forum, but it doesn't
> > seem to be very active.)
> >
>
>to change jedits fonts, under utilities menu choose global options
>
>select appearance, this has font options for menus + other fields
>text area has the editing text font (I use dialogeinput for menus and
>such and
>andale mono for the text area...)

I afraid I still don't see how to use larger fonts for the problem I 
mentioned. I mean the tiny fonts used, for example, to the right of 
File | New, where it says, I'm guessing, "C+n".

>to run a script.. you can 'dock' jython in the sides of the editor or
>bottom, and import from the buffer or load it.. or fire jython up from
>the plugin menu

Doesn't sound easy. With UliPad (or IDLE, for that matter) just hit F5.

>there is also a colour scheme plugin that gives you colour defaults if
>you want it to look lke emacs or jbuilder or idea etc etc etc
>
>jedit is pretty rich with its plugins.

Thanks,

Dick





From kw at kevin-walzer.com  Mon Sep  4 23:34:07 2006
From: kw at kevin-walzer.com (Kevin Walzer)
Date: Mon, 04 Sep 2006 23:34:07 -0400
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157413341.812545.51970@m73g2000cwd.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
	<1157413341.812545.51970@m73g2000cwd.googlegroups.com>
Message-ID: <44FCF02F.90900@kevin-walzer.com>

hiaips wrote:
> metaperl.etc at gmail.com wrote:
>> Earlier I asked about how people installed Python on OS X, given that
>> one can choose from Xcode, Fink, Darwin, ActiveState and source builds:
>>
>> http://groups.google.com/group/comp.lang.python/browse_thread/thread/5c4cde4206d1fbb7/37de06a6bb6b2361?lnk=gst&q=OS+X+and+Python+-+what+is+your+install+strategy%3F&rnum=1#37de06a6bb6b2361
>>
>> but before I knew it, I had been sucked in by the ease and vastness of
>> the Fink repository.
>>
>> Now my bliss run has come to a full halt due to these instructions at
>> `wxPython.org <http://www.wxpython.org/download.php>`_
>>
>> Note to Fink users: Versions of Python installed by Fink cannot run
>> wxPython (unless you install and run X11...). You need to use Apple's
>> Framework builds, or a third-party Framework build.
>>
>> And reading a bit further:
>>
>> Python 2.4 Framework builds are available for download from the
>> undefined.org MacPython site. ActiveState also distributes a Framework
>> build.
>>
>> So I guess I will look into a Framework build as my starting point.
> 
> I'd really recommend using the universal build from python.org. As a
> previous poster mentioned, it is a framework build. I've never had any
> trouble using wxPython in conjunction with it, either.
> 
The universal build from Python.org is outdated (IIRC). A better, more
optimized one is available from
http://pythonmac.org/packages/py24-fat/dmg/Universal-MacPython-2.4.3-2006-04-07.dmg



-- 
Kevin Walzer
Poetic Code
http://www.kevin-walzer.com


From rtw at freenet.co.uk  Sat Sep  9 10:40:45 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Sat, 09 Sep 2006 09:40:45 -0500
Subject: PIL cannot open TIFF image in Windows
References: <mailman.208.1157809477.5279.python-list@python.org>
Message-ID: <Xns98399FB07666rtwfreenetREMOVEcouk@216.196.109.145>

Andres Corrada-Emmanuel wrote in
news:mailman.208.1157809477.5279.python-list at python.org in
comp.lang.python: 

> I have installed PIL 1.1.5 on Windows with Python 2.4. I'm unable to
> open .tiff images that I can open and view using Windows Explorer. In
> other words, this simple test fails:
> 
> import Image
> im = Image.open('small.tif')
> 
> with an 'cannot identify image file' error message. I'm able to open
> .jpg images. Is PIL's support for TIFF images dependent on something
> else in Windows? 

I downloaded some test images from:

    	<url:http://www.remotesensing.org/libtiff/images.html>

I then ran a test:

LIBTIFFPIC = r".\libtiffpic"

import Image, os

def main():
  ok = error = 0
  for root, sub, files in os.walk( LIBTIFFPIC ):
    for i in files:
      if i.endswith( '.tif' ):
        full = os.path.join( root, i )
        try:
          tiff = Image.open( full )
        except:
          print "error:", full[ len( LIBTIFFPIC ) + 1 : ]
          error += 1
        else:
          print "ok:   ", full[ len( LIBTIFFPIC ) + 1 : ]
          ok +=1

  print "ok:", ok, "\terror:", error, "\ttotal:", ok + error
  
main()

The final line gave:

ok: 28  error: 33       total: 61

So I only managed to load 28 of the 61 test images, AFAIK I
have never installed anything special to get PIL to work
with tiff images.

As a side note The GIMP <url:http://www.gimp.org/> wouldn't load
some of the images too (I didn't test all), it had problems with
64 bit floating point images and images with RBGA data in them.

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From michele.simionato at gmail.com  Thu Sep 21 09:37:35 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 21 Sep 2006 06:37:35 -0700
Subject: Decorator cllass hides docstring from doctest?
In-Reply-To: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>
References: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>
Message-ID: <1158845855.482356.116110@h48g2000cwc.googlegroups.com>

Berthold H?llmann wrote:
> Saving the following code to a file and running the code through
> python does not give the expected error. disableling the "@decor" line
> leads to the expected error message. Is this a bug or an overseen
> feature?

Others have already pointed out the mistake. I wrote a module to avoid
this kind of issues, so you
may want to check it out:

http://www.phyast.pitt.edu/~micheles/python/documentation.html

        Michele Simionato



From bdesth.quelquechose at free.quelquepart.fr  Sun Sep  3 10:29:11 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sun, 03 Sep 2006 16:29:11 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <7x4pvpk1i6.fsf@ruckus.brouhaha.com>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<7x4pvpk1i6.fsf@ruckus.brouhaha.com>
Message-ID: <44fae3d2$0$31322$626a54ce@news.free.fr>

Paul Rubin a ?crit :
> Bruno Desthuilliers <onurb at xiludom.gro> writes:
> 
>>I've rarely encoutered "silent" data corruption with Python - FWIW, I
>>once had such a problem, but with a lower-level statically typed
>>language (integer overflow), and I was a very newbie programmer by that
>>time. Usually, one *very quickly* notices when something goes wrong.
> 
> 
> The same thing can happen in Python, and the resulting bugs can be
> pretty subtle.  I noticed the following example as the result of
> another thread, which was about how to sort an 85 gigabyte file.
> Try to put a slice interface on a file-based object and you can
> hit strange integer-overflow bugs once the file gets larger than 2GB:
> 
>     Python 2.3.4 (#1, Feb  2 2005, 12:11:53) 
>     [GCC 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)] on linux2
>     Type "help", "copyright", "credits" or "license" for more information.
>     >>> print slice(0, 3**33)
>     slice(0, 5559060566555523L, None)         # OK ...
> 
> So we expect slicing with large args to work properly.  But then:
> 
>     >>> class A:
>     ...   def __getitem__(self, s):
>     ...     print s
>     ... 
>     >>> a = A()
>     >>> a[0:3**33]
>     slice(0, 2147483647, None)                # oops!!!!
>     >>> 

Looks like a Python bug, not a programmer error. And BTW, it doesn't 
happens with >=2.4.1

Python 2.4.1 (#1, Jul 23 2005, 00:37:37)
[GCC 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)] on 
linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> print slice(0, 3**33)
slice(0, 5559060566555523L, None)
 >>> class A(object):
...     def __getitem__(self, s):
...             print s
...
 >>> A()[0:3**33]
slice(0, 5559060566555523L, None)
 >>>


From sybrenUSE at YOURthirdtower.com.imagination  Sat Sep 23 08:25:37 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sat, 23 Sep 2006 14:25:37 +0200
Subject: Automatic import PEP
References: <mailman.491.1158981359.10491.python-list@python.org>
Message-ID: <slrneha9u1.k6.sybrenUSE@schuimige.stuvel.eu>

Connelly Barnes enlightened us with:
> I wrote the 'autoimp' module [1], which allows you to import lazy modules:
>
> The main point of autoimp is to make usage of the interactive Python
> prompt more productive by including "from autoimp import *" in the
> PYTHONSTARTUP file.

Sounds like a great idea.

> I have also found "autoimp" useful in writing normal Python
> applications; one can use "from autoimp import *" at the top of a
> Python source file and thus have all Python modules available to
> that source file

That sounds like a source of new bugs to me. Besides that, you have no
overview at all of which modules are used by the program. It also
prevents automated checking of that using pylint and friends.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From free.condiments at gmail.com  Sat Sep  2 19:33:44 2006
From: free.condiments at gmail.com (Sam Pointon)
Date: 2 Sep 2006 16:33:44 -0700
Subject: Setting "value" of an int-derived class
In-Reply-To: <mailman.10291.1157238575.27775.python-list@python.org>
References: <mailman.10291.1157238575.27775.python-list@python.org>
Message-ID: <1157240024.661449.108410@b28g2000cwb.googlegroups.com>

Ken Schutte wrote:
> So, that's good.  But, how can I change the value of x from 5 to
> something else, without creating a new instance?
>
> I suppose I could create a function that creates a new "foo" and copies
> its attributes, but is there a more direct way?  Is the value "5" stored
> in some special attribute I can just directly modify?

In short, no. In long, ints (and longs, for that matter) are immutable
types implemented in a way that Python can't peek at their internals
easily, and so are very resistant to mutability. Imagine the results if
you mutated 5 to 6 or similar; in fact, you don't want regular numbers
to change without some serious hackage.

As for subclasses, a similar thing holds: Python programs can't see the
internal details. Subclasses just forward the method calls like
__add__, __xor__ etc (providing they're not overriden) to the int
class, which in turn pokes around at the C level and returns an answer.

What you probably want is a proxy class, that forwards all number
methods to a wrapped int, and also has a means of setting the wrapped
int. A minimal untested implementation:

class IntWrapper(object):
    def __init__(self, num):
        self.num = num
    def __getattr__(self, attr):
        if attr == 'num':
            return object.__getattr__(self, 'num')
        return getattr(self.num, attr)

Of course, this isn't actually what you asked for, a subclass of int.
But, bar hacking on the C level, which is possible but a bit extreme,
this is the closest thing to a mutable number.

But, personally, I happen to like the memory-wastetastic,
new-instance-returning but functionally purer style. It tends to lead
to less irreplicable bizarre bugs because of objects seemingley
semi-randomly changing state, and Python's garbage collection systems
are fairly good at picking up unused objects. ;)

--Sam



From nicolasfr at gmail.com  Sat Sep 16 16:10:30 2006
From: nicolasfr at gmail.com (nicolasfr at gmail.com)
Date: 16 Sep 2006 13:10:30 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
	<pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>
Message-ID: <1158437430.667410.78480@i3g2000cwc.googlegroups.com>


Rakotomandimby (R12y) wrote:
> What you should have done first is to suggest to contribute to the
> official Python doc.

I wrote an email a few months ago to the Python docs support email
address to offer my help but never got any answer.

> Then, if you encounter too much dumbs (and only in that case) you could
> fork docs.python.org and do your own project.
> That's the way free software works.

Everytime I am lookink at how to do this or that in Python I write it
down somewhere on my computer. (For ex. Threading. After reading the
official documentation I was a bit perplex. Hopefully I found an
article an managed to implement threads with only like 20 lines of code
in my script. That should have been in the docs first, not in an
article elsewhere... Same problem for handling gzipped files. I wanted
to know if the file I opened was a gzip archive or not. Not a clue in
the docs...) I have just decided to share all this knowledge this with
other. Community will decide if this wiki is of any interest. If not it
will just remain my personnal notebook for Python tips...

Anyway Python rocks, that's the important point!



From sjdevnull at yahoo.com  Thu Sep 14 17:32:17 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 14 Sep 2006 14:32:17 -0700
Subject: Specify string with uniform indentation ignored
In-Reply-To: <4509b7df$0$19672$88260bb3@free.teranews.com>
References: <4509b7df$0$19672$88260bb3@free.teranews.com>
Message-ID: <1158269537.632115.213910@b28g2000cwb.googlegroups.com>

tobiah wrote:
> Is there a built in way to do this?  I don't much
> care for:
>
> 	string = "function otherlang(){"
> 	string += "	doit()"
> 	string += "}"

That can be somewhat simplified to:
string = "function otherlang(){"\
         "    doit()"\
         "}"
It's not exactly what you wanted, I know.



From limodou at gmail.com  Sun Sep  3 21:03:17 2006
From: limodou at gmail.com (limodou)
Date: Mon, 4 Sep 2006 09:03:17 +0800
Subject: how to get a filename's extension
In-Reply-To: <1157330792.234618.204030@i3g2000cwc.googlegroups.com>
References: <1157330792.234618.204030@i3g2000cwc.googlegroups.com>
Message-ID: <505f13c0609031803q243a3ee4x35e6cf39354b477a@mail.gmail.com>

On 3 Sep 2006 17:46:32 -0700, SuperGh0d at gmail.com <SuperGh0d at gmail.com> wrote:
> Hello all,
>
> I am new to python and I am having some difficulty obtaining the
> extension of a file. I was looking at the re.match module but I am
> completely overwhelmed by regular expressions. Is there an easier way
> to get the extension for a file name like:
>
> this.is.my.file.avi
>
> I would just like to pull out the 'avi'
>
> your help is greatly appreciated! :)
>
>>> import os
>>> os.path.splitext('this.is.my.file.avi')
('this.is.my.file', '.avi')

-- 
I like python!
My Blog: http://www.donews.net/limodou
UliPad Site: http://wiki.woodpecker.org.cn/moin/UliPad
UliPad Maillist: http://groups.google.com/group/ulipad


From filipwasilewski at gmail.com  Tue Sep 19 16:16:03 2006
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: 19 Sep 2006 13:16:03 -0700
Subject: xmlrpc, extract data from http headers
In-Reply-To: <mailman.289.1158692215.10491.python-list@python.org>
References: <mailman.133.1158333835.10491.python-list@python.org>
	<mailman.170.1158398312.10491.python-list@python.org>
	<1158409120.687682.153870@i3g2000cwc.googlegroups.com>
	<mailman.289.1158692215.10491.python-list@python.org>
Message-ID: <1158696963.836280.112270@e3g2000cwe.googlegroups.com>

Milos Prudek wrote:
> > A better solution would be to extract cookies from headers in the
> > request method and return them with response (see the code below). I
>
> Full solution! Wow! Thank you very much. I certainly do not deserve such
> kindness. Thanks a lot Filip!

Glad to help. All in all this is the purpose of this group, isn't it?

cheers,
fw



From duncan.booth at invalid.invalid  Mon Sep 25 09:50:07 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 13:50:07 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
Message-ID: <Xns984996E6BABCEduncanbooth@127.0.0.1>

Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:
>> and will also break unit tests.
> 
> Er, so change the unit tests at the same time?

It is generally a principle of Python that new releases maintain backward 
compatability. An incompatible change such proposed here would probably 
break many tests for a large number of people.

If the change were seen as a good thing, then a backwards compatible change 
(e.g. introducing a function with a different name) might be considered, 
but if so it should address the whole issue: the current lack of support 
for encodings is IMHO a far bigger problem than whether or a quote mark is 
escaped.

> Why does it need to? cgi.escape is (or should be) dealing with
> character strings, not byte sequences. I must admit,
> internationalisation is not my forte, so if there's something
> I'm missing here I'd love to hear about it.

If I have a unicode string such as: u'\u201d' (right double quote), then I 
want that encoded in my html as '&#8221;' (or &rdquo; but the numeric form 
is better). For many purposes I could just encode it in the encoding to be 
used for the page, typically latin1 or utf8, but sometimes that isn't 
possible e.g. if you don't know the encoding at the point when you produce 
the string, or if there is no translation for the character in the desired 
encoding. The character reference will work whatever encoding is used for 
the page.

There should be a one-stop shop where I can take my unicode text and 
convert it into something I can safely insert into a generated html page; 
at present I need to call both cgi.escape and s.encode to get the desired 
effect.


From amk at amk.ca  Tue Sep 12 16:54:25 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Tue, 12 Sep 2006 15:54:25 -0500
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<5sidnY0_IITrmZrYnZ2dnUVZ_oqdnZ2d@speakeasy.net>
	<1158091389.180731.275700@m73g2000cwd.googlegroups.com>
Message-ID: <YYudnQ445rocg5rYnZ2dnUVZ_sWdnZ2d@speakeasy.net>

On 12 Sep 2006 13:03:09 -0700, 
	mensanator at aol.com <mensanator at aol.com> wrote:
> Ok, I appologize for saying that. Got a little carried away
> by the flames.

Apology accepted; no problem.

> That and fixing the broken examples.

That's also done.  I fixed the executescript.py example, and tried
running all the other examples as a check; that didn't turn up any
more crashers.

The development version of the docs, built nightly from the SVN trunk,
are at <http://docs.python.org/dev/>.  Note that the version number is
now 2.6a0 on the trunk, but I can backport fixes to 2.5-maint as
they're made.  (Any new changes won't get in 2.5c2, which should be
released tomorrow, but will get into 2.5final if the fixes are made by
about the 17th.)

> Should I start a new thread (sans polemics) to discuss the
> examples?

Certainly!

--amk


From sjmachin at lexicon.net  Sun Sep  3 23:36:51 2006
From: sjmachin at lexicon.net (John Machin)
Date: 3 Sep 2006 20:36:51 -0700
Subject: Python newbie with a problem writing files
References: <mailman.10321.1157331982.27775.python-list@python.org>
	<1157339031.920800.246020@i3g2000cwc.googlegroups.com>
Message-ID: <1157341011.513812.220520@b28g2000cwb.googlegroups.com>

Mike Kent wrote:
> > feed_list = open("feed_listing.conf","r")
>
> What could it be about the above line that means "Open this file for
> READ ONLY"?

That's his *INPUT* file. The error referred to his *OUTPUT* file, and
in any case the complain was that the "write" attribute was read-only,
*NOT* the ferschlugginer file itself.

"Sheesh!" * 2



From duncan.booth at invalid.invalid  Wed Sep 27 06:54:48 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 10:54:48 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
Message-ID: <Xns984B793317A15duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

>> You are still missing the point. I'm not talking about generating a
>> MySQL string literal, I'm talking about preventing wildcards
>> characters having their special meaning when using the string as a
>> parameter in cursor.execute.
> 
> But that's what cursor.execute will do if you use its
> parameter-substitution mechanism--generate a string literal.

The current implementation of the MySQL database adapter will do that. 
Other database adaptors may handle parameters without generating string 
literals.

> 
>> You still have to escape the escape character...
> 
> Which will be done by cursor.execute if you use its
> parameter-substitution mechanism.

Too late and not enough. Too late, because if you want to search for the 
literal "\\%" (single backslash percent) you need to escape the backslash 
before you escape the percent. Not enough because at the point MySQLdb 
finally converts it to a string literal a literal backslash to be used in a 
context where wildcards are allowed needs to be spelled with 4 backslashes. 
i.e. it needs to be escaped twice, once for the string literal and once to 
stop it being interpreted as an escape within the wildcard string.

> 
>> Calling the SQLString routine in this situation would be wrong
>> because it would escape characters such as newline which must not be
>> escaped. 
> 
> SQLString will convert newlines into the \n sequence in the generated
> string literal, which MySQL will interpret as a newline.
> cursor.execute's parameter-substitution mechanism would do exactly the
> same thing. 
> 
Correct: they both do the same thing. So you have to use either SQLString 
or the parameter substitution. You cannot use both. Calling SQLString on a 
string to be passed in to the parameter substitution mechanism will not 
work correctly.

May I suggest that the way for you to progress would be if you wrote some 
unit tests? So, create a simple table containing a few strings with special 
characters and do a few wildcard searches looking for %, newline etc. That 
way you can post not just a function, but some runnable code which either 
demonstrates that your function does what you say, or lets people suggest a 
new test which demonstrates that it fails to handle some particular edge 
case.

Here, I'll even give you a start. Run the code below (you might need to 
create a database called 'test' if you don't already have one), and then 
explain why test_escapebackslashwild fails, and either why you think the 
test is broken or how you would fix your code? All the other tests should 
pass.


---------------- mysqltest.py ---------------
import unittest
import MySQLdb

def EscapeSQLWild(Str) :
    """escapes MySQL pattern wildcards in Str."""
    Result = []
    for Ch in str(Str) :
        if Ch == "%" or Ch == "_" :
            Result.append("\\")
        #end if
        Result.append(Ch)
    #end for
    return "".join(Result)
#end EscapeSQLWild

class Tests(unittest.TestCase):
    values = "x%x", "xnx", "x\nx", "x\\nx", "x\\%x"
    def setUp(self):
        db = self.db = MySQLdb.connect("", "", "", "test")
        cursor = self.cursor = db.cursor()
        cursor.execute('''create temporary table pythontest
            (id INT NOT NULL AUTO_INCREMENT,
            PRIMARY KEY(id),
            name VARCHAR(30))''')
        cursor.executemany(
            "insert into pythontest(name) values(%s)",
            self.values)

    def tearDown(self):
        self.cursor.execute("drop table pythontest")

    def test_wildcard(self):
        n = self.cursor.execute(
            "select name from pythontest where name like %s",
            "x%x")
        self.assertEqual(n, 5)

    def test_nonwildcard(self):
        self.cursor.execute(
            "select name from pythontest where name like %s",
            "x\\%x")
        expected = (('x%x',),)
        self.assertEqual(expected, self.cursor.fetchall())

    def test_newline(self):
        self.cursor.execute(
            "select name from pythontest where name like %s",
            "x\nx")
        expected = (('x\nx',),)
        self.assertEqual(expected, self.cursor.fetchall())

    def test_backslashn(self):
        self.cursor.execute(
            "select name from pythontest where name like %s",
            "x\\\\nx")
        expected = (('x\\nx',),)
        self.assertEqual(expected, self.cursor.fetchall())

    def test_backslashpercent(self):
        self.cursor.execute(
            "select name from pythontest where name like %s",
            "x\\\\\\%x")
        expected = (('x\\%x',),)
        self.assertEqual(expected, self.cursor.fetchall())

    def test_escapewild(self):
        self.cursor.execute(
            "select name from pythontest where name like %s",
            EscapeSQLWild("x%x"))
        expected = (('x%x',),)
        self.assertEqual(expected, self.cursor.fetchall())

    def test_escapebackslashwild(self):
        self.cursor.execute(
            "select name from pythontest where name like %s",
            EscapeSQLWild("x\\%x"))
        expected = (('x\\%x',),)
        self.assertEqual(expected, self.cursor.fetchall())

if __name__=='__main__':
    unittest.main()
---------------------------------------------


From steve at holdenweb.com  Wed Sep  6 03:41:15 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:41:15 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157484212.885076.304340@h48g2000cwc.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
Message-ID: <44FE7B9B.30004@holdenweb.com>

mensanator at aol.com wrote:
> skip at pobox.com wrote:
> 
>>>>I think your whole experience is based on it.
>>
>>    >> But shouldn't a significant feature like that be explained in the
>>    >> Python manuals? Why should I go dig up Sqlite FAQs to learn what
>>    >> should have been in the manuals?
>>
>>I don't know, but I will take a stab at a plausible explanation.  First,
>>sqlite support has only been in Python for a month or three.  Its first
>>official unveiling will be when 2.5 is released.
> 
> 
> Although possibly too late for the final release, now would be a
> good time to straighten out the documentation.
> 
And you would be the best person to do it, since you're teh one this has 
bitten in the tender parts.

> 
>>Second, it's common when
>>wrapping functionality into Python to rely on the documentation for the
>>thing being wrapped.  The thinner the wrapper, the more you tend to rely on
>>the underlying documentation.  Also, the more functionally rich the thing
>>you've wrapped, the more you rely on the underlying documentation.  I
>>wouldn't be at all surprised if the pysqlite author operated under that
>>assumption.
> 
> 
> Ok, that's certainly plausible. But it's not an excuse. The thinner the
> documentation, the greater the emphasis should be made to point
> the reader to a more adequate source. Simply listing the Sqlite home
> page at the bottom of the page is hardly good enough. It should be
> explicitly stated in bold letters that the reader should go read the
> Sqlite FAQ because it radically differs from *real* databases and
> provide a seperate link to it in the body of the documentation.
> 
Whoa, there! This isn't commercial software we are talking about. While 
I appreciate the need to continually better Python's documentation, the 
"should" implies a moral imperative that the (volunteer) developers are 
unikely to find compelling.
> 
>>That the Python developers didn't pick up on the issue is not
>>surprising.  I'm not sure how many of them are (py)sqlite users, probably
>>relatively few.
> 
> 
> I would be surprised if they had never used ANY database. A little
> thing like dynamic field typing will simply make it impossible to
> migrate your Sqlite data to a *real* database.
> 
> What I'll do is re-format my rant, suggest how *I* would do the
> documentation, fix the errors I found in the examples and send it
> off to the Python bug tracking as suggested in the manuals.
> 
> How's that as a plan?

That's the ticket. Great idea. Changes to the documentation can be 
suggested in plain ASCII, you don't have to grok the LaTeX markup.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jarrod.roberson at gmail.com  Wed Sep  6 11:02:13 2006
From: jarrod.roberson at gmail.com (fuzzylollipop)
Date: 6 Sep 2006 08:02:13 -0700
Subject: IDE
In-Reply-To: <edlp29$6uf$1@news4.fe.internet.bosch.com>
References: <edlp29$6uf$1@news4.fe.internet.bosch.com>
Message-ID: <1157554933.573092.282270@i42g2000cwa.googlegroups.com>


Aravind wrote:
> hi,
>
> i am a newbie to python but used with some developement in c++ and VB. Can
> anyone suggest me a good IDE for python for developing apps...? i've seen Qt
> designer.. some of my friends said it can be used for python also but they r
> not sure.
>
> pls help...
>
> thanks in advance....


Active State Komodo
Runs on Windows, Linux and Mac OS X
there is even a cheap $29 personal version available.



From jaysherby at gmail.com  Fri Sep  8 15:31:08 2006
From: jaysherby at gmail.com (Jay)
Date: 8 Sep 2006 12:31:08 -0700
Subject: tkinter text <Key> event
In-Reply-To: <mailman.104.1157593476.5279.python-list@python.org>
References: <1157590442.881433.251550@d34g2000cwd.googlegroups.com>
	<mailman.104.1157593476.5279.python-list@python.org>
Message-ID: <1157743868.068044.327030@i42g2000cwa.googlegroups.com>

That makes sense, but it's not working.


John McMonagle wrote:
> On Wed, 2006-09-06 at 17:54 -0700, Jay wrote:
> > I'm having trouble with using the <Key> event with the Text object.
> > When I use them together (which is a logical combination), I use this
> > code:
> >
> > 	textbox = Text(root, wrap="word", height=15, width=50)
> > 	textbox.bind("<Key>", resolveGlyphs)
> >
> > def resolveGlyphs(event):
> > 	textBuf = textbox.get(1.0, END)
> > 	print(textBuf)
> >
> > What it prints out for me is everything except for the last character
> > -- the one that triggered the event.  How can I get the entire
> > contents?
> >
>
> bind the textbox to the <KeyRelease> event because by then it has been
> drawn on the Text widget.  The <Key> event is equivalent to the
> <KeyPress> event
>
> Regards,
>
> John
>
>
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.



From justin.mailinglists at gmail.com  Wed Sep  6 21:45:01 2006
From: justin.mailinglists at gmail.com (Justin Ezequiel)
Date: 6 Sep 2006 18:45:01 -0700
Subject: 22, invalid agument error
References: <1157563063.063705.317970@m73g2000cwd.googlegroups.com>
Message-ID: <1157593501.762579.135500@m73g2000cwd.googlegroups.com>

>   sockobj.bind(('',40007))

tried on my N6600 with same error

try using your phone's IP instead of the empty string ''

tried sockobj.bind(('127.0.0.1',40007)) and did not get an error



From richard.charts at gmail.com  Thu Sep 21 13:29:04 2006
From: richard.charts at gmail.com (richard.charts at gmail.com)
Date: 21 Sep 2006 10:29:04 -0700
Subject: I need some help with a regexp please
In-Reply-To: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
Message-ID: <1158859744.288230.232930@m7g2000cwm.googlegroups.com>


codefire wrote:
> Hi,
>
> I am trying to get a regexp to validate email addresses but can't get
> it quite right. The problem is I can't quite find the regexp to deal
> with ignoring the case james..kirk at fred.com, which is not valid. Here's
> my attempt, neither of my regexps work quite how I want:
>
> [code]
> import os
> import re
>
> s = 'Hi james..kirk at fred.com dr.spock at blarg.com jim at home.com @@not
> scottie at home.space.com partridge in a pear tree'
> r = re.compile(r'\w+\.?\w+@[^@\s]+\.\w+')
> #r = re.compile(r'[a-z\-\.]+@[a-z\-\.]+')
>
> addys = set()
> for a in r.findall(s):
>     addys.add(a)
>
> for a in sorted(addys):
>     print a
> [/code]
>
> This gives:
> dr.spock at blarg.com
> jim at home.com
> kirk at fred.com   <-- shouldn't be here :(
> scottie at home.space.com
>
> Nearly there but no cigar :)
>
> I can't see the wood for the trees now :) Can anyone suggest a fix
> please?
>
> Thanks,
> Tony

'[\w.]+@\w+(\.\w+)*'
Works for me, and SHOULD for you, but I haven't tested it all that
much.
Good luck.



From piet at cs.uu.nl  Mon Sep 25 16:55:03 2006
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Mon, 25 Sep 2006 22:55:03 +0200
Subject: Need compile python code
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
	<1159039498.616908.88550@d34g2000cwd.googlegroups.com>
	<1159042393.683184.111680@h48g2000cwc.googlegroups.com>
Message-ID: <m2wt7racpk.fsf@ordesa.lan>

>>>>> "MonkeeSage" <MonkeeSage at gmail.com> (M) wrote:

>M> mistral wrote:
>>> No, something is wrong there. what I need is just compile one python
>>> file which will generate html page, with parameters:
>>> "exec" "python" "-O" "$0" "$@"
>>> 
>>> just need simple way do this(script is correct), i will not set any
>>> patches anywhere, can i do this wrom normal GUI?

>M> Hmmm... Are you talking about _RUNNING_ python scripts? Is that what
>M> you mean by "compile" -- you mean execute? Is that what this broken
>M> shell script means?

>M> "exec" "python" "-O" "$0" "$@"

>M> You don't need exec, the double quote on every word breaks it, and
>M> passing $0 (which is the shell script itself) to python is sure to
>M> break. Try this:

I guess this is a trick to use a python script as a shell script that
executes itself. In other words it is both a shell script and a python
script and when executed as a shell script then it passes itself to the
python interpreter. When executed as a python script the first line is a
comment and the second line is a string (equal to 'execpython-O$0$@'), so
both are skipped.

You can't use that in windows, or maybe there is an equivalent trick. 
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org


From metaperl at gmail.com  Tue Sep 12 09:07:32 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 06:07:32 -0700
Subject: How to get the package, file,
	and line of a method/function invocant?
In-Reply-To: <1158042635.158081.110760@i3g2000cwc.googlegroups.com>
References: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>
	<1hliuk8.1fnsui6u87m34N%aleax@mac.com>
	<1158042635.158081.110760@i3g2000cwc.googlegroups.com>
Message-ID: <1158066452.609004.304280@b28g2000cwb.googlegroups.com>


Miki wrote:
> > > I am looking for something like the caller() routine in Perl:
> > >    http://perldoc.perl.org/functions/caller.html
> >
> > Look at the inspect module in Python's standard library.
> Or is you're feeling lazy, have a look at the "here" function found in
> http://www.unixreview.com/documents/s=9133/ur0404e/ur0404e_listing1.htm

Thanks for the link. I would've never figured out how to use inspect on
my own.



From aleax at mac.com  Sun Sep  3 13:52:59 2006
From: aleax at mac.com (Alex Martelli)
Date: Sun, 3 Sep 2006 10:52:59 -0700
Subject: Python style: to check or not to check args and data members
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<7x4pvpk1i6.fsf@ruckus.brouhaha.com>
	<44fae3d2$0$31322$626a54ce@news.free.fr>
	<mailman.10315.1157302204.27775.python-list@python.org>
Message-ID: <1hl33g3.1lo4lilasbcjrN%aleax@mac.com>

Jean-Paul Calderone <exarkun at divmod.com> wrote:
   ...
> > >>> class A(object):

note that A is new-style...

> >>> class x:

...while x is old-style.

Here's a small script to explore the problem...:

import sys

class oldstyle:
    def __getitem__(self, index): print index,

class newstyle(object, oldstyle): pass

s = slice(0, 3**33)

print sys.version[:5]
print 'slice:', s
print 'old:',
oldstyle()[s]
oldstyle()[:3**33]
print
print 'new:',
newstyle()[s]
newstyle()[:3**33]
print

Running this on 2.3.5, 2.4.3, 2.5c1, 2.6a0, the results are ALWAYS:

2.5c1
slice: slice(0, 5559060566555523L, None)
old: slice(0, 5559060566555523L, None) slice(0, 2147483647, None)
slice(None, 5559060566555523L, 1)
new: slice(0, 5559060566555523L, None) slice(None, 5559060566555523L,
None) slice(None, 5559060566555523L, 1)

[[except for the version ID, of course, which changes across runs;-)]]

So: no difference across Python releases -- bug systematically there
when slicing oldstyle classes, but only when slicing them with
NON-extended slice syntax (all is fine when slicing with extended syntax
OR when passing a slice object directly; indeed, dis.dis shows that
using extended syntax builds the slice then passes it, while slicing
without a step uses the SLICE+2 opcode instead).

If you add a (deprecated, I believe) __getslice__ method, you'll see the
same bug appear in newstyle classes too (again, for non-extended slicing
syntax only).

A look at ceval.c shows that apply_slice (called by SLICE+2 &c) uses
_PyEval_SliceIndex and PySequence_GetSlice if the LHO has sq_slice in
tp_as_sequence, otherwise PySlice_New and PyObject_GetItem.  And the
relevant signature is...:

_PyEval_SliceIndex(PyObject *v, Py_ssize_t *pi)

(int instead of Py_ssize_t in older versions of Python), so of course
the "detour" through this function MUST truncate the value (to 32 or 64
bits depending on the platform).

The reason the bug shows up in classic classes even without an explicit
__getslice__ is of course that a classic class ``has all the slots''
(from the C-level viewpoint;-) -- only way to allow the per-instance
behavior of classic-instances...


My inclination here would be to let the bug persist, just adding an
explanation of it in the documentation about why one should NOT use
classic classes and should NOT define __getslice__.  Any fix might
perhaps provoke wrong behavior in old programs that define and use
__getslice__ and/or classic classes and "count" on the truncation; the
workaround is easy (only use fully-supported features of the language,
i.e. newstyle classes and __getitem__ for slicing).  But I guess we can
(and probably should) move this debate to python-dev;-).


Alex


From willie at jamots.com  Wed Sep 20 18:53:42 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 17:53:42 -0500
Subject: byte count unicode string
Message-ID: <4511C676.2000400@jamots.com>

Martin v. L?wis:

 >willie schrieb:
 >
 >> Thank you for your patience and for educating me.
 >> (Though I still have a long way to go before enlightenment)
 >> I thought Python might have a small weakness in
 >> lacking an efficient way to get the number of bytes
 >> in a "UTF-8 encoded Python string object" (proper?),
 >> but I've been disabused of that notion.
 >
 >Well, to get to the enlightenment, you have to understand
 >that Unicode and UTF-8 are *not* synonyms.
 >
 >A Python Unicode string is an abstract sequence of
 >characters. It does have an in-memory representation,
 >but that is irrelevant and depends on what microprocessor
 >you use. A byte string is a sequence of quantities with
 >8 bits each (called bytes).
 >
 >For each of them, the notion of "length" exists: For
 >a Unicode string, it's the number of characters; for
 >a byte string, the number of bytes.
 >
 >UTF-8 is a character encoding; it is only meaningful
 >to say that byte strings have an encoding (where
 >"UTF-8", "cp1252", "iso-2022-jp" are really very
 >similar). For a character encoding, "what is the
 >number of bytes?" is a meaningful question. For
 >a Unicode string, this question is not meaningful:
 >you have to specify the encoding first.
 >
 >Now, there is no len(unicode_string, encoding) function:
 >len takes a single argument. To specify both the string
 >and the encoding, you have to write
 >len(unicode_string.encode(encoding)). This, as a
 >side effect, actually computes the encoding.
 >
 >While it would be possible to answer the question
 >"how many bytes has Unicode string S in encoding E?"
 >without actually encoding the string, doing so would
 >require codecs to implement their algorithm twice:
 >once to count the number of bytes, and once to
 >actually perform the encoding. Since this operation
 >is not that frequent, it was chosen not to put the
 >burden of implementing the algorithm twice (actually,
 >doing so was never even considered).


Thanks for the thorough explanation. One last question
about terminology then I'll go away :)
What is the proper way to describe "ustr" below?

 >>> ustr = buf.decode('UTF-8')
 >>> type(ustr)
<type 'unicode'>


Is it a "unicode object that contains a UTF-8 encoded
string object?"



From deets at nospam.web.de  Tue Sep 26 03:08:48 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 26 Sep 2006 09:08:48 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <mailman.624.1159249638.10491.python-list@python.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>	<mailman.610.1159227601.10491.python-list@python.org>	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
	<mailman.624.1159249638.10491.python-list@python.org>
Message-ID: <4ns201Fboh34U1@uni-berlin.de>

> well, if you're only watching mtv, it's easy to think that there's 
> obviously not much demand for country singers, blues musicians, British 
> hard rock bands, or melodic death metal acts.

These days its even hard to get the idea that there is a demand of boy 
bands, rnb, euro trash or any other popular music when watching it.

But make sure you polish your mechanics degrees, there sure is to pimp 
something out there, and training a head-butt also will do you good...

SCNR,

Diez


From caolan at ldmf.net  Fri Sep  1 14:41:57 2006
From: caolan at ldmf.net (Caolan)
Date: Fri, 1 Sep 2006 11:41:57 -0700
Subject: Newbie question involving buffered input
Message-ID: <FCCAC8CB56A9C14482D07A3E50AFBEE85541@winter-heart.wintersheart.net>

That makes sense I suppose - why is there a stdin.flush() method then?

________________________________

From: python-list-bounces+caolan=ldmf.net at python.org on behalf of Jean-Paul Calderone
Sent: Fri 9/1/2006 9:53 AM
To: python-list at python.org
Subject: Re: Newbie question involving buffered input



On Fri, 1 Sep 2006 09:31:11 -0700, Caolan <caolan at ldmf.net> wrote:
>I am executing the code below on a Windows XP system and if I enter > 2 characters it buffers the input and the call to sys.stdin.flush does not flush the input, it remains buffered.

You cannot flush input.  The flush method only relates to output.  The
*other* side of the file has to flush *its* output in order for you to
see it as input.

On Linux, the termios module provides a way to tell the system not to do
any buffering on a file descriptor.  pywin32 may expose equivalent
functionality for Windows.

Jean-Paul
--
http://mail.python.org/mailman/listinfo/python-list


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From semiopen at hotmail.com  Wed Sep 27 22:20:40 2006
From: semiopen at hotmail.com (semiopen at hotmail.com)
Date: 27 Sep 2006 19:20:40 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <L_KdncN7ErRSJ4fYnZ2dnUVZ_sadnZ2d@speakeasy.net>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<L_KdncN7ErRSJ4fYnZ2dnUVZ_sadnZ2d@speakeasy.net>
Message-ID: <1159410040.644081.143260@e3g2000cwe.googlegroups.com>


John Bailo wrote:
> Xah Lee wrote:
> > Computer Language Popularity Trend
> >
> > This page gives a visual report of computer languages's popularity, as
> > indicated by their traffic level in newsgroups.
>
> The only problem being that in the last five years, there are now a
> multiplicity of options for discussing any of these languages, in places
> that are not Usenet.
>
> For example, Sun hosts a variety of bulletin boards on its java.net
> site.   Likewise Microsoft has it's "communities".
>
> My guess is that if you included all the new avenues the other languages
> would have growth curves about the same shape as for LISP.
>
Good point - especially given the sheer volume of the microsoft groups.
For example, I follow microsoft.public.excel.programming (and thus have
been quite interested in the discussion in fa.haskell recently about
finding a way for VBA to call Haskell functions) regularly and it
almost always has hundreds of posts a day - most of them business-like
discussions of code. Few of the traditional comp groups can boast of
such volume - so any attempt to measure an ill-defined popularity by
focusing on them will be skewed.

-semiopen



From paddy3118 at netscape.net  Tue Sep 12 01:01:23 2006
From: paddy3118 at netscape.net (Paddy)
Date: 11 Sep 2006 22:01:23 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158036663.669437.194480@i3g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
Message-ID: <1158037283.158873.255680@i3g2000cwc.googlegroups.com>


>
> I want to know if there is some way to make Python RE behave like grep
> does, or do I have to change to another engine?

Maybe if you posted a (tested) grep example and data, that does as you
want, the group could better understand what you are asking for?

- Paddy.



From steve at holdenweb.com  Fri Sep 15 13:53:09 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 15 Sep 2006 13:53:09 -0400
Subject: Outbound port on sockets
In-Reply-To: <12gljhfc4f81p97@corp.supernews.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>	<4mt1ajF7gs0hU1@uni-berlin.de>	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>	<4mv51sF7t5lmU1@uni-berlin.de>
	<12glesm56ghquc4@corp.supernews.com>	<mailman.136.1158334482.10491.python-list@python.org>
	<12gljhfc4f81p97@corp.supernews.com>
Message-ID: <eeep8r$4l4$1@sea.gmane.org>

Grant Edwards wrote:
> On 2006-09-15, Sergei Organov <osv at javad.com> wrote:
> 
> 
>>>>>It's not the issue here, but to specify the outgoing port
>>>>>call bind(('', portnum)) before connect().
> 
> 
>>>It's an interesting thing to know, but I've been doing TCP
>>>stuff for many years and never run across a situation where
>>>it's something I needed to do.  If somebody in this thread
>>>actually does need to do it, I'd be curious bout why...
>>
>>Well, one of ftpd implementations I have here (C code from RTEMS) does
>>this:
>>
>>      /* anchor socket to avoid multi-homing problems */
>>      data_source = info->ctrl_addr;
>>      data_source.sin_port = htons(20); /* ftp-data port */
>>      if(bind(s, (struct sockaddr *)&data_source, sizeof(data_source)) < 0)
>>        ERROR;
>>      ...
>>      if(connect(s,
>>          (struct sockaddr *)&info->def_addr,
>>          sizeof(struct sockaddr_in)) < 0
>>      )
>>        ERROR;
>>
>>I've no idea what "multi-homing problems" are, but maybe it gives you
>>some hint?
> 
> 
> I don't know what "multi-homing problems are either".
> Apparently there must be some ftp clients that require the
> source port for the data connection to be port 20.
> 
> The RFC is pretty vague. It does say the server and clinet but
> must "support the use of the default data port [port 20]" or
> something like that. But, it's not all all clear to me what
> that is supposed to mean.  My reading is that they must support
> the default port as the destination port for a data connection
> untill it's been changed by receipt of a PORT command.
> 
> But, like I said, is very vague, and I suppose some client
> implementor could have read it as the server must use the
> default data port as the source port for a data connection.

Standard (port-mode) FTP has the client send a PORT command to the 
server when data transfer is required. The server then makes a 
connection to the indicated port from its own port 20. If you look in 
/etc/services you'll likely see that port 21 is identified as "ftp" or 
"ftp-control" and 20 as "ftp-data".

Passive mode was introduced so that the server is not required to make a 
connection inbound to the client, as more and more firewalls were 
interposed at the perimeter of networks, blocking the inbound requests 
to clients from servers.

I suspect that the reason for the comment is simply that the connection 
out from the server is being bound to the same interface (*IP address*) 
that the inbound request arrived on. That way it's less likely that the 
data stream will be routed differently from the control (port 21) stream.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bertgoos at yahoo.com  Sat Sep 30 04:40:51 2006
From: bertgoos at yahoo.com (bertgoos at yahoo.com)
Date: 30 Sep 2006 01:40:51 -0700
Subject: Automatic methods in new-style classes
In-Reply-To: <1159568589.977941.182440@m73g2000cwd.googlegroups.com>
References: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
	<1159568589.977941.182440@m73g2000cwd.googlegroups.com>
Message-ID: <1159605651.322691.190370@m7g2000cwm.googlegroups.com>

The metaclass approach seems to be the one I was looking for. Thanks!

Bert



From python.sam at googlemail.com  Fri Sep 22 16:59:58 2006
From: python.sam at googlemail.com (sam)
Date: 22 Sep 2006 13:59:58 -0700
Subject: returning None instead of value: how to fix?
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
	<1158956835.466475.162860@i42g2000cwa.googlegroups.com>
Message-ID: <1158958798.273728.3620@m7g2000cwm.googlegroups.com>

> Missing a return on the last line is likely your immediate problem.

thanks to everyone for pointing this out. obviously, i had not
understood what was actually involved in a recursive call. i have
corrected it as suggested and it works fine now.

> You have more subtle problems, though.  First, you have needlessly
> reduplicated value<1 test--the first thing recursive_halve does is to
> check whether value<1, so there's no need to check whether value<1
> before calling it.

yes, i could see this was nasty. i figured i'd go back and try and
streamline it afterwards. i wrote an insertion sort yesterday and i had
to cheat by putting two items into a new list to begin with, and only
then enter the nested loops to do the rest of it. i seem to be fighting
my way into a process to get a foothold, and only then trying to finish
it smoothly/elegantly. hopefully this will ease up with time and
practice.

> Second, you have redundant branching logic.  Look at your first else
> statement.  It does nothing; the else doesn't affect whether the stuff
> inside it gets executed or not; it's redundant.  It's better style to
> not to have such redundancy (either by omitting the else, or having a
> single return point).

if i understand this correctly, you mean that the function will
terminate if it returns 'value'  at the beginning, so the else: is
implicit in the fact that the interpreter has even got that far. i take
your point about trying to abbreviate what is, in effect, verbiage.

thanks again for all the answers. it boggles the mind that one can have
access to this almost immediate help at no charge.

sam



From bolderaft at gmail.com  Sun Sep 17 12:26:37 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 17 Sep 2006 09:26:37 -0700
Subject: Python getting some positive attention at digg.com
Message-ID: <1158510397.908957.219910@m73g2000cwd.googlegroups.com>

This made it to the front page of digg.com yesterday, and is now up to
597 diggs. It has some discussion among folks who are trying to decide
which language to learn next...if any of you Pythonistas have digg
accounts, you might want to chime in.

http://digg.com/programming/Python_Programming_for_Beginners



From jstroud at mbi.ucla.edu  Fri Sep 29 23:23:03 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 30 Sep 2006 03:23:03 GMT
Subject: DAT file compilation
In-Reply-To: <1159576888.862008.286980@m73g2000cwd.googlegroups.com>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
	<4o5qhvFd1bddU1@uni-berlin.de>
	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>
	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>
	<1159576888.862008.286980@m73g2000cwd.googlegroups.com>
Message-ID: <rqlTg.6908$GR.1231@newssvr29.news.prodigy.net>

Jay wrote:
> That cgi idea is really cool, but I don't have any web space to host
> the files.  Plus the bandwidth required would be deadly. 

I think you are overestimating the cost of bandwidth. By the time it 
becomes an issue, you've sold so many units of software, and people are 
using your program so much, that you'll probably be able to go ahead and 
buy your own hosting company. One python hosting company offers 50GB/mo 
bandwidth for $7.50/mo. Google "python hosting" and you'll find them. 
That's hella usage of a program.

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From george.sakkis at gmail.com  Sun Sep 10 21:27:59 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 10 Sep 2006 18:27:59 -0700
Subject: Refactoring Dilemma
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
	<1157928606.110323.123080@i3g2000cwc.googlegroups.com>
Message-ID: <1157938079.739333.20890@d34g2000cwd.googlegroups.com>

Carl Banks wrote:
> Kamilche wrote:
> > '''
> > I'm in the middle of a refactoring dilemma.
> > I have several singletons that I'm turning into modules, for ease of
> > access.
> > The usual method is noted as 'Module 1' below.
> > The new method is noted as 'Module 2'.
> > Is there any reason NOT to do this that I may be unaware of?
> > It's easier than remembering to declare global variables at the top of
> > the function.
> > '''
> >
> > # ----------- Module 1.py ------------
> > # Normal module processing
> > var = 0
> >
> > def MyRoutine():
> >     global var
> >     var = 1
> >
> > MyRoutine()
> > print var
> >
> >
> > # ----------- Module 2.py ------------
> > # 'Self' module processing
> > import sys
> > var = 0
> > self = sys.modules[__name__]
> >
> > def MyRoutine():
> >     self.var = 1
> >
> > MyRoutine()
> > print var
>
> I don't see any major problem with it.  In fact, I think it's a very
> good idea to do this, rather than use global statements, when using
> module as a singleton class.
>
> I recently made the same transition myself, though I solved it a bit
> differently.  I used a decorator to pass the module as the first
> argument (actually it passes a proxy to module's global dict, since the
> module itself isn't accesible from the function object).
>
> def modmethod(func):
>     class modproxy(object):
>         __getattribute__ = func.func_globals.__getitem__
>         __setattr__ = func.func_globals.__setitem__
>     self = modproxy()
>     def call_with_module(*args,**kwargs):
>         return func(self,*args,**kwargs)
>     call_with_module.func_name = func.func_name
>     return call_with_module
>
> @modmethod
> def MyRoutine(self):
>     self.var = 1
>
> MyRoutine()
> print var

This looks quite hackish, both the implementation and the usage; most
people would get confused when they didn't find var's assignment at
global scope. I prefer the the simple global statements if they aren't
that many, otherwise the assignment of the module to self is also fine.

George



From will at willmcgugan.com  Mon Sep 18 13:24:36 2006
From: will at willmcgugan.com (Will McGugan)
Date: 18 Sep 2006 10:24:36 -0700
Subject: Interfacing my chess client with GNU chess using python
In-Reply-To: <mailman.230.1158591522.10491.python-list@python.org>
References: <mailman.230.1158591522.10491.python-list@python.org>
Message-ID: <1158600275.968372.191930@m7g2000cwm.googlegroups.com>


Varun Hiremath wrote:
> Hello,
>    I have written a chess client using python which is a graphic
>    interface to play chess. It is at present a two player version,
>    players move their peices by clicking two squares on the board as
>    in any other chess clients.
>    Now i want to interface my program with the already available
>    gnuchess program. Basically i want to feed the user input to the
>    gnuchess and get the output and then display in my GUI. I have read
>    about Popen but i couldn't figure out how to do it. Is there any
>    other better ways of doing it. Any help would be appreciated.
>

The subprocess module may help you...

http://docs.python.org/dev/lib/module-subprocess.html


Will McGugan
--
http://www.willmcgugan.com



From tim.peters at gmail.com  Tue Sep 12 02:52:41 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 12 Sep 2006 02:52:41 -0400
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158041908.842965.145530@m73g2000cwd.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040245.635848.169000@h48g2000cwc.googlegroups.com>
	<1158041908.842965.145530@m73g2000cwd.googlegroups.com>
Message-ID: <1f7befae0609112352k3eb90b28m6a33d73d1a68c7af@mail.gmail.com>

[Licheng Fang[
> ...
> In fact, what I'm doing is handle a lot of regular expressions. I
> wanted to build VERY LONG regexps part by part and put them all into a
> file for easy modification and maintenance. The idea is like this:
>
> (*INT) = \d+
> (*DECIMAL) = (*INT)\.(*INT)
> (*FACTION) = (*DECIMAL)/(*DECIMAL)
> (*NUMERALS) = (*FACTION)|(*DECIMAL)|(*INT)
> ... ...
>
> What's inside the sytactically wrong (* and ) is something to be
> replaced, and then I wrote a little script to do the string
> substitution, to get very long regexps to be compiled. I thought that
> might be a way to handle long and complex regexps, and in this course I
> encountered the problem with the semantics of '|'.
>
> My approach may sound desperate and funny, but please, do you have any
> good idea as to how to handle long and complex regexps?

My best advice is to find a different approach entirely.  For example,
build a parser using parser technology, and use regexps in that /only/
to do gross tokenization ("string of digits", "decimal point", ...):
build the rest with a grammar.

Regexps are a brittle tool, best tolerated in small doses.  For an
"NFA" implementation like Python's, you're likely to experience poor
speed when combining many complex regexps, and /especially/ when
alternatives are ambiguous wrt prefixes (and yours are, else you
wouldn't have a problem with "longest match" versus "some shorter
match" to begin with.  OTOH, under a "DFA" implementation such as
POSIX grep's, you're likely to experience exponential memory
requirements (DFA implementations can need to build enormous state
machines, tracing out in advance all possible paths through all the
regexps applied to all possible input strings).

Just sounds to me like the wrong tool for the job.


From tim at tdw.net  Fri Sep 22 10:30:37 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 22 Sep 2006 15:30:37 +0100
Subject: Don't use regular expressions to "validate" email addresses
In-Reply-To: <R53026298.198.7257.1@mx-extra>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au> <eevo5f$abu$1@sea.gmane.org>
	<mailman.442.1158902652.10491.python-list@python.org>
	<1158916433.621758.21640@m73g2000cwd.googlegroups.com>
	<874pv0z0cp.fsf@benfinney.id.au> <R53026298.198.7257.1@mx-extra>
Message-ID: <9afea2ac0609220730x3ad5901bm116c487dfe4ca0e0@mail.gmail.com>

> >
> Just as a matter of interest, are you expecting that you'll find out
> about the undeliverable ones? Because in many cases nowadays you wont,
> since so many domains are filtering out "undeliverable mail" messages as
> an anti-spam defence.
>

...and then there is the problem of validating that the valid email
address belongs to the person entering it !!      If it doesn't,  any
correspondence you send to that email address will itself be spam (in
the greater modern definition of spam).

You could allow your form to accept any email address,  then send a
verification in an email  to the address given,  asking the recipient
to click a link if they did in fact fill in the form.  When they click
the link the details from the original form are then verified and can
be activated and processed.

HTH :)


From georgeryoung at gmail.com  Wed Sep 20 12:30:24 2006
From: georgeryoung at gmail.com (georgeryoung at gmail.com)
Date: 20 Sep 2006 09:30:24 -0700
Subject: get process id...
In-Reply-To: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
References: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
Message-ID: <1158769823.998456.171070@b28g2000cwb.googlegroups.com>

SpreadTooThin wrote:
> How does one get the process id?
> Is there a method for windows and unix (mac os x etc...)

under linux, do:
  import os
  os.getpid()



From jstroud at mbi.ucla.edu  Sun Sep 24 06:17:29 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 24 Sep 2006 10:17:29 GMT
Subject: Ideal python idle
Message-ID: <ZWsRg.5785$7I1.660@newssvr27.news.prodigy.net>

Hello,

I decided that the ultimate python IDE would basically be a vim editor 
with a hotkey or button that ran the currently edited module as 
"__main__", allowing gui (tkinter, wx) windows to spawn etc.

That's it.

I tried the "runscript.vim" plugin which basically promises this, but it 
seems to have some problems:

    1. stdout is insert at the cursor

    2. This error message is given upon exit:

         E172: Only one file name allowed:
               silent botright new Output window

    3. This error message is given upon trying to write changes:

         E382: Cannot write, 'buftype' option is set

Anyway, what would really be cool is idle, with vim, running as split 
window with a hotkey or button to run scripts.

Even IDLE complains about subprocesses and binding ports, etc. But IDLE 
doesn't use vim, so its not really an option, unless it CAN use vim 
somehow--and I can get past the port binding. Not really interested on 
getting past this port binding issue unless IDLE can be used with vim, 
though.

Any advice from someone who has gotten runscript to work or knows of a 
tool like I describe would be greatly appreciated.

James


From onurb at xiludom.gro  Fri Sep 15 08:30:27 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 15 Sep 2006 14:30:27 +0200
Subject: Check if variable is an instance of a File object
In-Reply-To: <1158307282.216407.223980@p79g2000cwp.googlegroups.com>
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
	<pan.2006.09.15.07.51.10.187745@gmx.net>
	<1158307282.216407.223980@p79g2000cwp.googlegroups.com>
Message-ID: <450a9ce4$0$22483$626a54ce@news.free.fr>

sc_wizard29 at hotmail.com wrote:
> Marc 'BlackJack' Rintsch a ecrit :
> 
>> And what do you do if you check for `file` and it isn't such an instance?
>> Raise an exception?  A no, that's something you don't like.  So what else?  ;-)
> 
> Well, I prefer the idea of raising my *own* exception to the idea of
> having an unknown behavior occur

The behavior in case of an uncaught exception is pretty well defined :
your app crashes with an error message and a traceback. Note that
nothing prevents you to try and catch most execptions at the top-level
and do whatever seems appropriate here (log the error, try to see if the
app just display the error and continue with another task or if it's
time to suicide, etc)...

> (for ex : what if the argument is NOT
> a File, but is "itereable" ?)

hard to tell without knowing the rest of the code, but if it's something
like this :

def show_lines(fileobj):
  for line in fileobj:
    print line

it will just work...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From mikael at isy.liu.se  Wed Sep 27 04:07:43 2006
From: mikael at isy.liu.se (Mikael Olofsson)
Date: Wed, 27 Sep 2006 10:07:43 +0200
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
Message-ID: <451A314F.3060703@isy.liu.se>

The following is the answer I gave on py2exe-users at lists.sourceforge.net. Perhaps Fredrik can elaborate on the status of different versions of his excellent publication.


Tanner Ruschman wrote about "An Introduction to Tkinter" by Fredrik Lundh:

> > When I saw that it was written 
> > (actually, copyrighted) in 1999, I figured that a new(er) version of 
> > Tkinter had come out since then, changing how some of the code examples 
> > work.
> >
> > Does anybody know of a guide as comprehensive as this, but written for 
> > one of the more recent Tkinter modules?
>   

You probably mean

    http://www.pythonware.com/library/tkinter/introduction/

which is copyrighted 1999. There is also

    http://effbot.org/tkinterbook/

which I think is the most recent version of it. It states that it is 
last updated in November 2005.

HTH
/Mikael Olofsson

Universitetslektor (Senior Lecturer [BrE], Associate Professor [AmE])
Link?pings universitet

-----------------------------------------------------------------------
E-Mail:  mikael at isy.liu.se
WWW:     http://www.dtr.isy.liu.se/en/staff/mikael
Phone:   +46 - (0)13 - 28 1343
Telefax: +46 - (0)13 - 28 1339
-----------------------------------------------------------------------
Link?pings kammark?r: www.kammarkoren.com   Vi s?ker tenorer och basar! 



From sjmachin at lexicon.net  Sun Sep 17 04:14:41 2006
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 17 Sep 2006 18:14:41 +1000
Subject: xlrd number of rows in worksheet (was: Re: Pre-defining an action
	to take when an expected error occurs)
In-Reply-To: <1158339345.603379.61610@b28g2000cwb.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
	<1158303569.603466.36130@e3g2000cwe.googlegroups.com>
	<1158339345.603379.61610@b28g2000cwb.googlegroups.com>
Message-ID: <450D03F1.3000509@lexicon.net>

On 16/09/2006 2:55 AM, Tempo wrote:
> John Machin  thanks for all of your help, and I take responsibility for
> the way I worded my sentences in my last reply to this topic. So in an
> effort to say sorry, I want to make it clear to everybody that it seems
> as though errors in my code and use of external programs (Excel in
> particular) are making "range(sh.nrows)" have faulty results. I am
> trying to pinpoint the spot in my code or use of Excel, before
> "range(sh.nrows) is executed, that is bugged. John Machin, I am
> thrilled that the package xlrd exists at all because it simplifies a
> daunting task for a beginner programer--me. Its uses are not bound to
> beginners either. So thanks for the package and your help to this point.
> 

I'm sorry, too: I should have wrapped my post in <humour> ... </humour> 
tags> :-)

Of course it's up to you to decide the criteria for filtering out 
accidental non-data from your spreadsheet. Note that this phenomenon is 
not restricted to spreadsheets; one often sees text data files with 
blank or empty lines on the end -- one's app just has to cope with that.

Here's an example of a function that will classify a bunch of cells for you:

def usefulness_of_cells(cells):
     """Score each cell:
     as 0 if empty,
     as 1 if zero-length text,
     as 2 if text and value.isspace() is true,
     otherwise as 3.
     Return the highest score found.
     """
     score = 0
     for cell in cells:
         if cell.ctype == xlrd.XL_CELL_EMPTY:
             continue
         if cell.ctype == xlrd.XL_CELL_TEXT:
             if not cell.value:
                 if not score:
                     score = 1
                 continue
             if cell.value.isspace():
                 score = 2
                 continue
         return 3
     return score

and here's an example of using it:

def number_of_good_rows(sheet):
     """Return 1 + the index of the last row with meaningful data in it."""
     for rowx in xrange(sheet.nrows - 1, -1, -1):
         score = usefulness_of_cells(sheet.row(rowx))
         if score == 3:
             return rowx+1
     return 0

A note on using the isspace() method: ensure that you use it on 
cell.value (which is Unicode), not on an 8-bit encoding (especially if 
your locale is set to the default ("C")).

| >>> '\xA0'.isspace()
| False
| >>> u'\xA0'.isspace()
| True
| >>> import unicodedata as ucd
| >>> ucd.name(u'\xA0')
| 'NO-BREAK SPACE'

You can get these in spreadsheets when folk paste in stuff off a web 
page that uses &nbsp; as padding (because HTML trims out 
leading/trailing/multiple instances of SPACE). Puzzled the heck out of 
me the first time I encountered it until I did:
     print repr(data_that_the_users_were_shrieking_about)

Here's a tip: repr() in Python and "View > Page Source" in Firefox come 
in very handy when you have "what you see is not what you've got" problems.

Anyway, I'll add something like the above functions in an examples 
directory in the next release of xlrd (which is at alpha stage right 
now). I'll also add in a Q&A section in the docs, starting with "Why 
does xlrd report more rows than I see on the screen?" -- so do let us 
know what you find down the end of your spreadsheet, in case it's a 
strange beast that hasn't been seen before.

HTH,
John


From bmbeck at gmail.com  Thu Sep 14 17:27:04 2006
From: bmbeck at gmail.com (Brandon)
Date: 14 Sep 2006 14:27:04 -0700
Subject: Exposing Excel as a Webservice
Message-ID: <1158269224.831066.73460@m73g2000cwd.googlegroups.com>

Hi all,

I'm currently working on a project where we have a need to expose an
Excel spreadsheet on the web as a webservice that needs to be reliable
and available 24x7x365.  I've implemented a prototype of this in python
using the win32com library to interface with the Excel Automation API
via COM.  I've also used web.py as a way to expose this automation
functionality to the network.  This works just fine as a prototype that
proves that it is possible to do something like this.

I'm not revisiting the code with the goal of making it more reliable
and available, able to support multiple users (although only allowing
one at a time to use Excel).  This means that Excel is going to
potentially be used from multiple threads -- something I know that has
historically caused problems for a lot of people based on my searches
of the newsgroup.  What I'd like to know is what is the proper strategy
that I should be taking here?  I see several options:

1)  Ignore threads entirely.  Let every incoming web thread interface
directly with excel (one web thread at a time -- I'll have an
interpreter scoped lock preventing multiple threads from accessing).

2)  Dedicate a single worker thread to do all interaction with Excel.
Pass data off to this thread from the incoming web thread via shared
memory and let the worker thread get Excel to process it.  This will
ensure that exactly 1 thread ever interacts with Excel.

3)  Spawn a new interpreter (literally spawn another python process)
for each incoming web thread.  This will ensure that when a process is
finished with Excel there is no chance of any lingering state or
something improperly cleaned up.

I've actually attempted to implement 1) and 2) and have had problems
with sporadic failures that cause the Excel to no longer be accessible
from the interpreter.  I've tried very hard to ensure that
pythoncom._GetInterfaceCount() always returns 0 when I believe I'm
finished with excel.  I don't think I'm perfect at always getting a 0,
but I'm pretty close.  I believe that some of my problems are caused by
not being perfect about this but haven't been able to track down the
leaking references.  I'm definitely not an expert in COM or its
threading models.

What techniques does the group suggest?  Is spawning a new interpreter
for every request a bit too extreme (I don't mind the performance hit).
 Has anyone ever done anything like this?  How did you get around these
problems?

Thanks,
Brandon



From paddy3118 at netscape.net  Tue Sep 26 13:43:05 2006
From: paddy3118 at netscape.net (Paddy)
Date: 26 Sep 2006 10:43:05 -0700
Subject: Splitting device addresses into parts
In-Reply-To: <efbn5h$ol2$03$1@news.t-online.com>
References: <efbl8h$kf2$03$1@news.t-online.com>
	<45195a2d$0$27565$626a54ce@news.free.fr>
	<efbn5h$ol2$03$1@news.t-online.com>
Message-ID: <1159292585.385398.76080@i42g2000cwa.googlegroups.com>


Fabian Steiner wrote:
> Bruno Desthuilliers wrote:
> > Fabian Steiner wrote:
> >> I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
> >> need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
> >> simple way to achieve this? So far I am using regular expressions but I
> >> would like to avoid them ...
> >
> > devices = ["PCI:2:3.0", "PCI:3.4:0"]
> > for d in device:
> >   nums = tuple(map(int, d.split(':')[1:]))
> >   print "for ", d, " : ", nums
>
> Unfortunately, this doesn't work (even if I correct your typos) since
> the delimeter isn't necessary a colon - that's exactly the difficulty I
> am trying to solve.
>
> Regards,
> Fabian Steiner
Fabian,
You should have given better examples, but, on what you have told us so
far...

for ch in delimeter_chars:
  s.replace(ch, some_char_not_in_input)
tple = tuple(int(x) for x in s.split(some_char_not_in_input)[1:])

- Pad.



From g.brandl-nospam at gmx.net  Wed Sep 27 03:02:42 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 09:02:42 +0200
Subject: A critique of cgi.escape
In-Reply-To: <mailman.761.1159329442.10491.python-list@python.org>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>	<efa7cg$pr2$1@lust.ihug.co.nz>
	<efaknl$867$2@news.albasani.net>	<efakui$idf$4@lust.ihug.co.nz>
	<efate6$ilf$1@news.albasani.net>	<efb1q3$a43$2@lust.ihug.co.nz>	<mailman.673.1159276007.10491.python-list@python.org>	<efch5p$2cc$1@lust.ihug.co.nz>
	<efcq62$fmc$1@sea.gmane.org>
	<mailman.761.1159329442.10491.python-list@python.org>
Message-ID: <efd7mk$4qt$1@news.albasani.net>

Anthony Baxter wrote:
>> I would really rather this were a discussion than an argument. You will
>> now no doubt reply telling me I wouldn't.
>>
>> My posting was issued as a response to the irritation engendered by your
>> argumentative style of debate. Your latest response simply proves that
>> there is indeed no remark, however irrelevant, that you will allow to go
>> unanswered.
> 
> The Complaints department is down the hall...

Though some discussion participants seemingly want to stay for more
being-hit-on-the-head lessons ;)

Georg


From nemesis at nowhere.invalid  Sat Sep 16 13:43:28 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Sat, 16 Sep 2006 17:43:28 GMT
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
Message-ID: <20060916174324.2237.20755.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:

> Ah, great. I changed, this was not working immediatly.
> So I remembered, most often you have to restart the App, and so its is
> working.

Here is working fine.

> Small Notice: There was the warning then: Another Instance is running,
> I pressed yes.

XPN uses the file xpn.lock to see if there is another istance running,
if the program is not closed correctly it doesn't remove this file so
you get the warning.

>>that's an optimization I've thinking about for a while ... but at the
>>moment I don't know how to implement it.
> I see, you have to remember after refreshing the list the position and
> the state of the folding. I can imagine, this is not trivial.

That's right. You should also remember the open/closed threads ... at
least the one with the article selected.

> I'm sure, I will discover some more useful things about your program!
> In some cases, it already beats forte agent!

Thank you. Agent is (was) a great software I've been using it for a long
time.
>
> Some remarks:

> * threads are somtimes not assigned correctly, this means, that
> one thread is divided into two.
> I subscribed to wxPyhton mailing list in gmane, and there is:
> One thread
> Applications written in wxPyhton
> and another
> RE: Applications written in wxPyhton

threading is based on the References header and then on the subject, you
can have problems with mailing-lists cause mail-agents sometimes do not
produce the References header but only the In-Reply-To.
Another problem could be the date, before building the threads XPN
reorders the articles by date ... but if the date in the article is
wrong it can confuse the threads.

> but this (is) or should be *one* thread.

Yes.

> * the enter key is not working in some dialogs (for example in search)
> and Esc to cancel the dialog. (or is that a gkt issue?)

It's a focus issue, in the search dialog the focus is set on the entry.
The Esc key is not binded to any button by default.

> * the find dialog is sometimes not working

What exactly is not working?

> * to mark more than one article at one time (to be able to mark
> multiple articles at one as read, ...)

Yes but selecting more then one article introduces some difficulties I
preferred to avoid for the moment ;-)


-- 
Le donne spesso non sanno d'essere sedute sulla loro fortuna.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From sjmachin at lexicon.net  Fri Sep  1 03:47:39 2006
From: sjmachin at lexicon.net (John Machin)
Date: 1 Sep 2006 00:47:39 -0700
Subject: pysqlite - simple problem
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
Message-ID: <1157096859.197049.120950@i42g2000cwa.googlegroups.com>

rdrink wrote:
> I am just getting into pysqlite (with a fair amount of Python and MySQL
> experience behind me) and have coded a simple test case to try to get
> the hang of things...
> yet have run into a 'stock simple' problem...
>
> I can create a database 'test.db', add a table 'foo' (which BTW I
> repeatedly DROP on each run) with one INTGER column 'id', and can
> insert data into with:
> cur.execute("INSERT INTO foo (id) VALUES (200)")
> con.commit()
> (and fetch back out)
> all with no problem. But...
>
> If I try to expand this to:
> num = 200
> cur.execute("INSERT INTO foo (id) VALUES (?)", num)
> I get the error...
> Traceback (most recent call last):
>   File "/home/rdrink/Programming/Python/Inner_Square/sqlite_test.py",
> line 46, in ?
>     cur.execute("INSERT INTO foo (id) VALUES (?)", num)
>   File "/usr/lib/python2.4/site-packages/sqlite/main.py", line 255, in
> execute
>     self.rs = self.con.db.execute(SQL % parms)
> TypeError: not all arguments converted during string formatting
> ... which obviously points to a 'typing' problem.
> ?? but where ??
> >From all the docs I have read Python 'int' and sqlite INTEGER should
> pass back and forth seemlessly...
> And I have even tried to reduce things to simply:
> cur.execute("INSERT INTO foo (id) VALUES (?)", 200)
> but still raise the same error.
>
> So this has to be something stupidly simple... but for the life of me I
> can't see it.

With the '?' paramstyle, the 2nd arg to cursor.execute() should be a
*sequence* (typically a tuple) of the values that you are inserting.

Tty this:
cur.execute("INSERT INTO foo (id) VALUES (?)", (num, ))

This is standard Python DBAPI stuff - you would probably get a similar
response from other gadgets e.g. mySQLdb -- IOW it's not specific to
pysqlite.

> Advice, suggestions, pointers for the noob?

General advice: Read the docs -- both the gadget-specific docs and the
Python DBAPI spec (found at http://www.python.org/dev/peps/pep-0249/).

HTH,
John



From cvanarsdall at mvista.com  Thu Sep 14 17:25:01 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Thu, 14 Sep 2006 14:25:01 -0700
Subject: How to convert a timedelta object to a string?
In-Reply-To: <4509b8b4$0$19672$88260bb3@free.teranews.com>
References: <mailman.104.1158267229.10491.python-list@python.org>
	<4509b8b4$0$19672$88260bb3@free.teranews.com>
Message-ID: <4509C8AD.9010403@mvista.com>

tobiah wrote:
> Carl J. Van Arsdall wrote:
>   
>> Basically I used the datetime module and timedelta objects to calculate 
>> a difference between two times.  Now I'm trying to figure out how I make 
>> that time delta a string HH:MM:SS 
>>
>>
>>     
>
> Oddly enough, str(tdobject) does what you want.
>
>   
Well, kinda, although I can work with this, str(tdobject) returns a 
string that looks like:

-1 day, 7:34:32



Granted, I can parse that, I was looking for a way to just get the 
actual duration.  But for now I'll just parse the string, thanks.

-c



-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From ldo at geek-central.gen.new_zealand  Tue Sep 26 07:08:57 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 23:08:57 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efb1me$a43$1@lust.ihug.co.nz>

In message <slrnehhr52.ln4.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Lawrence D'Oliveiro enlightened us with:
>> You're proposing two separate functions:
>>
>>     1) quoting of non-wildcard specials
>>     2) quoting of wildcard specials
> 
> I'm suggesting functions based on the role of the string they need to
> escape, not the characters in that string.
> 
>     1) Quoting of wildcard strings for a query using LIKE etc.
>     2) Quoting of values for putting into queries.

You know what, it turns out there is no stupid mistake number 2. Quoted
wildcards can be put through a non-wildcard quoting routine and it will
work. In fact, that's how it should work--the LIKE clause does its own
parsing of the pattern string, I was just being misled by the fact that
MySQL's lexical analyzer was passing through the backslashes in the string
literals because they weren't escaping special characters.

So yes, there should be two separate functions, one for escaping
non-wildcard specials, and one for escaping wildcards.

> You only need the first one, since every database interface that
> follows PEP 249.

You still need the second one, in instances like the QuoteSQLList example I
gave earlier.


From aleax at mac.com  Sat Sep  9 20:09:21 2006
From: aleax at mac.com (Alex Martelli)
Date: Sat, 9 Sep 2006 17:09:21 -0700
Subject: IronPython on Mono howto
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
	<mailman.122.1157636133.5279.python-list@python.org>
	<1157681970.481777.256230@d34g2000cwd.googlegroups.com>
	<mailman.149.1157684459.5279.python-list@python.org>
Message-ID: <1hlepe1.2oodqs1tijeciN%aleax@mac.com>

<skip at pobox.com> wrote:

>     >> One thing I did find especially annoying though was that none of the
>     >> editing keys worked.
> 
>     Seo> It is a known problem. It is a Mono bug. (ncurses-based colored
>     Seo> console is not really complete.) There is a workaround.
> 
> Thanks, it worked perfectly.  I guess the white text on the white background
> prevented the Mono developers from seeing that the editing characters were
> self inserting. ;-)

On MacOSX, my workaround for the white-on-white behavior of
IronPython+Mono on Apple's Terminal was to try other terminal emulators
-- Terminator worked fine (display-wise).  But the editing remains off,
so I'll be glad to try the suggested workaround (if and when
sparcs.kaist.ac.kr responds...:-).


Thaks,

Alex


From http  Sat Sep 30 04:52:03 2006
From: http (Paul Rubin)
Date: 30 Sep 2006 01:52:03 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
	<efl9tm$ak5$02$1@news.t-online.com>
Message-ID: <7xodsx3ff0.fsf@ruckus.brouhaha.com>

Peter Otten <__peter__ at web.de> writes:
> I like
> 
> def blocks_til_mark(stack):
>     for block in stack:
>         if block.is_marked():
>             return
>         yield block
>     raise SomeError
> height = sum(block.height for block in blocks_til_mark(stack))

Oh my, I realize now that I mis-read the original, and my examples
were all wrong.  Shows how the explicit loop isn't necessarily so
clear ;-).  Note that unlike the original, the loop above fails to set
height = 0 in the case where the exception gets raise.

I'd maybe just scan the stack twice.  The rescan is needed only if
there can be blocks with height <= 0.  Otherwise, you can just raise
SomeError if height == 0:

    height = sum(b.height for b in 
         itertools.takewhile(lambda: not block.is_marked(), stack))

    if height == 0 and True not in (b.is_marked() for b in stack):
         raise SomeError


From ptmcg at austin.rr._bogus_.com  Wed Sep 20 15:47:12 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Wed, 20 Sep 2006 19:47:12 GMT
Subject: Python-2.5 available at WebFaction
References: <1158767384.591334.91670@k70g2000cwa.googlegroups.com>
Message-ID: <4VgQg.309$4B3.10@tornado.texas.rr.com>

<remi at cherrypy.org> wrote in message 
news:1158767384.591334.91670 at k70g2000cwa.googlegroups.com...
> Hello everyone,
>
> I'm happy to announce that WebFaction have now installed Python-2.5
> on all their servers.
>
> WebFaction (formerly Python-Hosting.com) support all the
> major Python web frameworks (Django, TurboGears, CherryPy,
> mod_python, Pylons, web.py, ...)
>
> People using Python CGI or Python-2.5-compatible application servers
> will be able to use all the new features of Python-2.5 for their
> website.
>
> Remi
>
> http://www.webfaction.com - Hosting for an agile web
>

Is this available for all of your hosting plans, including your lowest cost 
plan?

-- Paul 




From mail at microcorp.co.za  Sat Sep 16 04:00:51 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 16 Sep 2006 10:00:51 +0200
Subject: REQ: Java/J2EE Developer 10 Months
References: <1158342517.415734.51510@k70g2000cwa.googlegroups.com><450AF3F0.5020808@holdenweb.com>
	<450AFF4A.6080609@tim.thechases.com>
Message-ID: <026801c6d966$3b44e420$03000080@hendrik>

"Tim Chase" <python.list at tim.thechases.com> wrote:

8<----------------------------------------
> Or, perhaps they just have their terminology off.  "Corba" is a 
> lot like "cobra" which is also a snake, like a Python.  ("We've 
> got Corba, right here in River City.  That starts with 'C' and 
> that rhymes with 'P' and that stands for Python!")
> 
> I've gotta stop with the musicals... :)
> 
> -tkc

Don't you dare!

LOL - Hendrik




From grante at visi.com  Wed Sep 13 16:46:31 2006
From: grante at visi.com (Grant Edwards)
Date: Wed, 13 Sep 2006 20:46:31 -0000
Subject: When is it a pointer (aka reference) - when is it a copy?
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
	<mailman.45.1158171218.10491.python-list@python.org>
	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>
Message-ID: <12ggrh7cf893o25@corp.supernews.com>

On 2006-09-13, John Henry <john106henry at hotmail.com> wrote:
> Thanks for the reply, both to Laszlo and Steve.
>
> Okay, I understand what you're saying.
>
> But what if I need to make a "pointer" to a simple variable.

There's no such thing as a "simple variable".  There are
mutable objects and immutable objects.  Names are bound to
objects.

  x = 3

The name "x" is bound to an immutable integer object who's
value is 3.  

> For instance, in C:
>
>    int i=1
>    int *j=&i
>
>    *j = 2
>    print i
>
> and you get 2 printed.
>
> In Python,
>
>    i=1

The name "i" is bound to an immutable integer object who's value is 1.

>    j=i

The name "j" is bound to an immutable integer object who's
value is 1. That may or may not be the same object to which
"i" is bound.

>    j=2

Now the name "j" is bound to an immutable integer object who's
value is 2.  Rebinding the name "j" to a different object has
no effect on the object to which "i" is bound.

>    print i
>
> and you get 1 printed.

Because you've changed neither the object to which "i" is bound
nor the value of that object (you can't change the values of
integer objects).

> So, if I understand you correctly, I must make the reference
> to a more elaborate representation.  Like:
>
>    i=[1,]
>    j=i
>    j[0]=2
>    print i
>
> in order to get 2 printed.
>
> Correct?

I suppose, for some values of "correct".  You've bound the
names "i" and "j" to the same mutable object, then mutated that
object.  Afterwards "i" and "i" still refer to that mutated
object.

That'll work as a rather clumsy imitation of the C code, but I
don't really see what it is you're trying to accomplish. Trying
to write C code using Python isn't going to be fun or productive[1]. 

When using Python, you should write Python code. ;)

If you'll explain the actual problem you're trying solve for
which you think you need C-style "pointers", then somebody will
be happy to show you how that problem is solved using Python.

[1] There are people here who probably think it fun, but only
    as a brain-teaser.

-- 
Grant Edwards                   grante             Yow!  After THIS, let's go
                                  at               to PHILADELPHIA and have
                               visi.com            TRIPLETS!!


From gagsl-py at yahoo.com.ar  Thu Sep 28 02:43:20 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 03:43:20 -0300
Subject: ctypes pointer to pointer
In-Reply-To: <1159408723.560232.142160@i42g2000cwa.googlegroups.com>
References: <1159408723.560232.142160@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060928031054.05682d68@yahoo.com.ar>

At Wednesday 27/9/2006 22:58, Podi wrote:

>I have a C function in the dll does the following:
>
>DLL_API int dll_foo(char **data, size_t *size)
>{
>     strcpy(*data, "hello");
>     *size = strlen(*data);
>
>     return 0;
>}
>
>
>So I would call the function as such,
>
>char data[8];
>size_t size;
>
>int status = dll_foo(&data, &size);
>
>I have tried the following in Python but not able to get it working...
>Any help would be appreciated!
>
>from ctypes import *
>mydll = windll.mydll
>array = c_char * 8
>data = array()
>size = c_long()
>status = mydll.dll_foo(byref(data), byref(size))
>Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
>WindowsError: exception: access violation writing 0x00000000

I'd use your last try. But since it didnt work, use a prototype and 
see what happens:

data = create_string_buffer('\000' * 8)
size = c_long()
dll_foo = mydll.dll_foo
dll_foo.argtypes = [POINTER(c_char_p), POINTER(c_long)]
status = dll_foo(byref(data), byref(size))

Are you sure your function is compiled using the stdcall calling 
convention? I'm not sure what means DLL_API.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From alefnula at gmail.com  Wed Sep 20 06:00:04 2006
From: alefnula at gmail.com (alefnula at gmail.com)
Date: 20 Sep 2006 03:00:04 -0700
Subject: Cheese Shop Registration error
In-Reply-To: <45108fe6$0$22937$afc38c87@news.optusnet.com.au>
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
	<450f165c$0$5111$afc38c87@news.optusnet.com.au>
	<1158618349.740529.181620@e3g2000cwe.googlegroups.com>
	<4510768f$0$11973$afc38c87@news.optusnet.com.au>
	<1158709651.487843.9930@b28g2000cwb.googlegroups.com>
	<45108fe6$0$22937$afc38c87@news.optusnet.com.au>
Message-ID: <1158746404.327013.48320@b28g2000cwb.googlegroups.com>

Thank You all! :) I successfully registered and submited my first
package :)

Richard Jones wrote:
> John Machin wrote:
> > re.match("[A-Fa-f0-9]{8,8}", data.strip()) makes it plain what is
> > intended ...
> 
> Indeed, thanks.
> 
> 
>     Richard



From sxn02 at yahoo.com  Fri Sep 22 11:22:21 2006
From: sxn02 at yahoo.com (Sorin Schwimmer)
Date: Fri, 22 Sep 2006 08:22:21 -0700 (PDT)
Subject: I need some help with a regexp please
Message-ID: <20060922152221.27999.qmail@web56001.mail.re3.yahoo.com>

Hi,

My $0.02:

re.compile('^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|(com|net|org|edu|intl|mil|gov|arpa|biz|aero|name|coop|info|pro|museum))$')

I picked it up from the Net, and while it may be not perfect (you've got lots of reply's telling you why),
it's good enough for me.

Good luck,
Sorin



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From riko at despammed.com  Sun Sep 24 14:16:31 2006
From: riko at despammed.com (Mc Osten)
Date: Sun, 24 Sep 2006 20:16:31 +0200
Subject: Running Python script from C++ code(.NET)
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
Message-ID: <1hm6qnx.7pnwln2dkzb3N%riko@despammed.com>

volcano <Mark.Geyzer at gmail.com> wrote:

> A trivial question - I have a working Python script that I have to
> invoke from C++ code. No fancy stuff - just run the whole script with
> its parameters. No callbacks, no signalling - nada, just
> stupid,primitive, straightforward call.

 In a unix based environment I would use fork + exec*. IIRC in Windows
you should have a CreateProcess function call.

<http://goffconcepts.com/techarticles/development/cpp/createprocess.html
>
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllpro
c/base/createprocess.asp>

You could also try system, but it's generally considered insecure.

-- 
blog:  http://www.akropolix.net/rik0/blogs | Uccidete i filosofi,
site:  http://www.akropolix.net/rik0/      | tenetevi riso e
forum: http://www.akropolix.net/forum/     | bacchette per voi.


From limodou at gmail.com  Mon Sep  4 20:34:23 2006
From: limodou at gmail.com (limodou)
Date: Tue, 5 Sep 2006 08:34:23 +0800
Subject: Python newbie with a problem writing files
In-Reply-To: <1157382984.377081.263690@p79g2000cwp.googlegroups.com>
References: <200693205740.885292@JJ-Tosh>
	<mailman.10322.1157332184.27775.python-list@python.org>
	<1157382984.377081.263690@p79g2000cwp.googlegroups.com>
Message-ID: <505f13c0609041734o5258a3edpcb58e0fbaba830a2@mail.gmail.com>

On 4 Sep 2006 08:16:24 -0700, Jason <tenax.raccoon at gmail.com> wrote:
> limodou wrote:
> > > Code:
> > >
> > > import feedparser
> > > from xml.sax import saxutils
> > >
> > > feed_number=200
> > >
> > > feed_list = open("feed_listing.conf","r")
> > > for each_feed in feed_list:
> > >     data=feedparser.parse(each_feed)
> > >     feed_title=data.entries[0].title
> > >     xml_output=open("xml_data\\feed" + str(feed_number) + ".xml", "w")
> >
> > Maybe there is a extra '=', if it should be:
> >
> > xml_output.write(feed_title)
> >
> > ?
> >
>
> It took me a few moments to parse what limodou wrote here, but he's
> absolutely correct.  Your problem is that you are trying to reassign
> the write method in your file.  File objects are built-in types, and do
> not allow their methods to be calvaliery replaced.
>
> Here's an example on the correct way (and your way) of writing to a
> file:
> >>> f = open('spam.xml', 'w')
> >>> f.write( 'This data is written to the file' )
> >>> f.write = ("This is not a valid Python syntax")
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> AttributeError: 'file' object attribute 'write' is read-only
> >>>
>
> You'll notice that the AttributeError describes exactly what's wrong in
> this case.  The write method on your file attribute is read-only.  It
> doesn't say anything about whether your file is read-only.
>
> If you really, really want to change the write method into a string,
> you can subclass from the file class:
>
> >>> class MyFileType(file):
> ...     pass
> ...
> >>> myfile = MyFileType('spam_and_eggs.xml', 'w')
> >>> myfile.write
> <built-in method write of MyFileType object at 0x00870B88>
> >>> myfile.write = "Gonna replace write method with this string!"
> >>> myfile.write
> 'Gonna replace write method with this string!'
> >>>
>
> Of course, you can no longer easily access the original write method
> after re-assigning it like that.
>
> (limodou, I thought this might need a little bit of extra explanation
> for the original poster.  I apologize if I seem rude here.)
>
Very good, I just want to point out the bug according to the
traceback, and don't think so much. But you explained so details.

:)

-- 
I like python!
My Blog: http://www.donews.net/limodou
UliPad Site: http://wiki.woodpecker.org.cn/moin/UliPad
UliPad Maillist: http://groups.google.com/group/ulipad


From XX.XmcX at XX.XmclaveauX.com  Wed Sep  6 01:25:36 2006
From: XX.XmcX at XX.XmclaveauX.com (MC)
Date: Wed, 06 Sep 2006 07:25:36 +0200
Subject: [Article] OpenOffice.org and Python
References: <slrnefrv2p.9pc.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <mn.31bd7d694f278d16.46195@XX.XmclaveauX.com>

Thanks!

But:
  - and Python 2.4.x?
  - I have Python 2.4 and then "embbed Python 2.3 of OOo" ; how install 
some things in this last Python?  I dream to call Pywin32 from OOo...
  - when I drive OOo from Python, via COM/Ole-automation, many things 
not run (getStruct...); no solution?

-- 
@-salutations

Michel Claveau




From javier_subervi at yahoo.com  Tue Sep 26 11:26:44 2006
From: javier_subervi at yahoo.com (Javier Subervi)
Date: Tue, 26 Sep 2006 08:26:44 -0700 (PDT)
Subject: Problem Coordinating Python and OpenLDAP
Message-ID: <20060926152644.89378.qmail@web90306.mail.mud.yahoo.com>

Hi;
I'm on FreeBSD 6.1. In order to integrate Python into LDAP I have to intstall an interpreter called py-ldap2 (in my case). I installed it from the ports but when I go to my python interpreter and enter "import ldap" it tells me the module can't be found. What am I doing wrong? I got this at the end of my installation of py-ldap2:

===>   Registering installation for py24-ldap2-2.2.0
cyrus-sasl-2.1.22: "/usr/ports/1" non-existent -- dependency list incomplete
openldap-sasl-client-2.3.27: "/usr/ports/1" non-existent -- dependency list incomplete
py24-ldap2-2.2.0: "/usr/ports/1" non-existent -- dependency list incomplete

Is this a problem? I've tried installing those ports, the first is in, the second I couldn't find and the third is the one I thought I just finished installing! What gives?
TIA,
Javier
3
 		
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From ms at cerenity.org  Sun Sep  3 13:22:44 2006
From: ms at cerenity.org (Michael)
Date: Sun, 03 Sep 2006 18:22:44 +0100
Subject: Broadcast server
References: <1157015655.323891.154720@p79g2000cwp.googlegroups.com>
	<op.te5bquyamko9fo@r44116.rd.bbc.co.uk>
	<1157025190.780586.43070@i42g2000cwa.googlegroups.com>
Message-ID: <44fb0db2$0$582$ed2619ec@ptn-nntp-reader03.plus.net>

swell at netcourrier.com wrote:

>   It sounds very interesting and i will definitely take a deeper look
> but i was more considering something simpler as a learning exercise
> more that finding a package that should already do what i want to
> achieve.

The bulk of this post dissects (roughly) how Kamaelia handles this
internally since I figure that might also be useful if you're after
this as a learning exercise :-) (It should hopefully be clear enough
for this to be useful) At minimum it might go some way to explain why
people generally tend to suggest using an existing framework :-)

> I want to find the basic guidelines to write that kind of client/server
> architecture and make some tests of different solutions(socket+select
> or socket+thread or mix of them)

I think if you're doing socket & select it sounds easy/simple until you
start dealing with all the cases you need to to do it properly. You're
probably best looking at the python cookbook for a good initial starting
point.

> Your project seems very great and will try to read in to learn.

Kamaelia *might* still be useful here in some respects, since despite being
*effectively* event based, due to the use of generators code tends to look
linear.

The low level structure of the server breaks down as follows:

(I'm spending a bit of time here since it might be of general interest,
sorry if it isn't)

   * Kamaelia.Internet.TCPServer is a simple component that sits waiting for
     a user to connect. 

     It makes the server port, adds any user socket options, makes it non
     blocking, binds it to the requested (if any) host and either to a user
     defined or random port number. (latter is for testing)

     It then registers the socket with the piece of code that's taking care
     of select handling, and sits to wait for any notifications of activity
     on the socket. (Which would mean for something acting as a server a new
     connection).

     It then performs a socket accept, and creates an object to handle the
     raw (now connected) socket - a connected socket adaptor. It then
     registers that socket and object with the piece of code that's taking
     care of select handling. (So that the select handling can tell the
     piece of code handling the raw socket to do some work on the socket)

     code: http://tinyurl.com/pocm8

   * Kamaelia.Internet.ConnectedSocketAdaptor is actually more complicated
     than you might expect. The reason is because the socket is
     non-blocking, and where-ever you would normally block you have
     to maintain some sort of buffering in case the action fails.
     This is more a symptom of non-blocking behaviour than it is about
     Kamaelia.

     Anyhow the basics of this is to take any data that is to be sent to the
     socket, and add that to a sending queue.  (this data will generally
     come from the code handling the protocol)

     Then if the select handling code has said that we can send/should data,
     we take data from the send queue and send as much as we can until our
     sending fails (after all, we're non-blocking, so we expect it to fail).

     Then if the select handling code has said that there's data ready to
     receive the component reads from the socket until an error (again we
     expect an error due to non-blocking behaviour). This data is then
     passed on to a location where a protocol handler can expect to take the
     data and do what it likes with it.

     The bulk of the code for the CSA actually revolves around resends, and
     the necessary error handling. (It's also one of the oldest bits of code
     in Kamaelia so possibly a little horrid to look at!)

     code: http://tinyurl.com/nj8lk

   * Kamaelia.Internet.Selector is also slightly more complex than you might
     think. This is because whilst you tell select "let me know whenever any
     of these sockets is ready for (reading|writing|exceptional)", it
     actually cares about what you do *after* it's given you an answer. 

     For example if you don't read from all the things that are ready to
     read, or don't write to all the things that are ready to write or
     (worse) try asking it to do things with regard to closed or invalid
     sockets, then you're just asking for trouble.

     There's lots of ways round this and you can do something like:
     looping:
         (readables, writeables, excepts) = select( ...)
         for readable in readables:
             read from readable and do something
         for writable in writeables:
             write to writeables and do something
         for exceptional in excepts:
             handle exceptional

     However then you add new problems - what about if you want to do a
     database request as result of one? Render a image for another? Wait for
     keyboard press? etc.

     As a result that's why we use explicit message passing, though many
     people use a reactor (or sometimes a pro-actor) pattern to handle
     events. (if you're familiar with simulation it's very similar to an
     event wheel approach).

     For us we simply have a service (a selector) that sits an waits to be
     told "send me a message when this is ready to do X". Since the thing
     handling select can't know (in our system because we don't want any
     accidental serialisation) whether the event (socket read to ready,
     socket ready to write) has been handled, our selector removes the
     socket from the read/write/exceptional set when it's been found to be
     ready to do something.

     This means that when the thing using has read from the socket it tells
     the selector "can I have more please", and if it's written to the
     socket has to tell the selector "I want to do more, but it bust - can
     you tell me when it's working again".

     This means the code managing the select loop and the socket sets the
     select call operates on has to deal with all these issues. (You'd have
     to anyway, but in some respects it's more explicit at the socket-level
     in Kamaelia)

     As a result you'll see explicit code adding sockets to "readers",
     "writers", and "exceptionals", and for removing sockets from them when
     an event's happened. This puts responsibility for making this work with
     the code that cares - the code handling the socket activity directly.
     The rationale for this is that it then also means that the same code
     that's used for sockets can be used for file handles. (one of the
     points of select on unix after all)

     code: http://tinyurl.com/mfqyr

For completeness:
   * Kamaelia.Chassis.ConnectedServer.SimpleServer takes the above
     components and packages them up in an easy to use way. (meaning you can
     avoid all the lowlevel hassle). 

     It's called a Chassis because like you add components onto a car
     chassis (wheels, seats, doors, engine) in order to make a car, you need
     to add someting to the SimpleServer to make a server. Specifically you
     need to give it something that can create components to handle
     connections.

     As a result, the way SimpleServer works is whenever a new connection
     comes in, it gets told about it by being passed a connected socket
     adaptor by the tcp server. It then creates a protocol handler to talk
     to the connected socket adaptor. As a result, any information that
     comes in from the socket gets passed to the protocol handler. Any
     information the protocol handler generates gets sent out the socket.

     As a result the logic for the SimpleServer is:
         * Create the TCP Server
         * Loop
            * When the TCP Server gives us a connected socket adaptor,
              create a protocol handler (from the given function), and wire
              the two together.
            * If the connection dies (due to the protocol handler saying
              "shutdown" or due to the socket dying) the everyone interested
              finds out and propogates the change. (Meaning you don't get
              dead file descriptors in the select call)
     code: http://tinyurl.com/pts72

You'll note that the explanation of select itself is by far the longest
here! You may also find "man select_tut" interesting and useful if you're
doing this as a learning exercise.

If you're looking to do this more generally, you should really consider
using SocketServer or asyncore that come with python, or Twisted or Kamelia
if you want to run a production system. 

Twisted is more well known and more deployed and as a result more battle
tested (meaning seasoned programmers would sensibly trust it more!), and
follows a more common approach for coding all this. (Boils down to something
similar though) As a result if hiring people to work on code is something
to think about Twisted operates is probably a better choice. Kamaelia is
however designed to be easy to pick up.

Finally nipping back to your example here:

> 5 clients that get time updated from the server

The code to handle on the server side is trivial. 

----(start)----
import time
from Axon.ThreadedComponent import threadedcomponent
from Kamaelia.Chassis.Pipeline import Pipeline
from Kamaelia.Chassis.ConnectedServer import SimpleServer
from Kamaelia.Util.Stringify import Stringify
from Kamaelia.Util.Backplane import *

class periodictime(threadedcomponent):
    def main(self):
        while 1:
            time.sleep(0.1)
            self.send(time.time(), "outbox")

Backplane("periodictime").activate()
Pipeline(periodictime(),
         Stringify(), # Make suitable for network
         PublishTo("periodictime")).activate()

def getTimeProtocol():
    return SubscribeTo("periodictime")

SimpleServer(protocol=getTimeProtocol, port=1600).run()
----(finish)----

Telnet to 127.0.0.1 1600 to see the result here.

If you want to have the data source something from a client (eg event info
coming in on port 1599) with clients of the event source coming in from
elsewhere, this would change the server as follows:

----(start)----
from Kamaelia.Chassis.Pipeline import Pipeline
from Kamaelia.Chassis.ConnectedServer import SimpleServer
from Kamaelia.Util.Backplane import *

Backplane("periodictime").activate()

def publishTime():     return PublishTo("periodictime")
def getTimeProtocol(): return SubscribeTo("periodictime")

SimpleServer(protocol=publishTime, port=1599).run()
SimpleServer(protocol=getTimeProtocol, port=1600).run()
----(finish)----

And the time (event) source would look like this:

----(start)----
import time
from Kamaelia.Internet.TCPClient import TCPClient
from Axon.ThreadedComponent import threadedcomponent
from Kamaelia.Chassis.Pipeline import Pipeline
from Kamaelia.Util.Stringify import Stringify

class periodictime(threadedcomponent):
    def main(self):
        while 1:
            time.sleep(0.1)
            self.send(time.time(), "outbox")

perdiodictimeserver = "127.0.0.1"
Pipeline(periodictime(),
         Stringify(), # Make suitable for network
         TCPClient(perdiodictimeserver, 1599)).activate()
----(finish)----

Anyway, I hope the explanation of what's going on inside the core is useful
since in many respects if you're writing your own select handling loop
(which I would encourage you to do if you're learning about this!), the
basics of what you have to do stay the same. (check activity, clear, when
errors happen ask again, buffer data which needs to get sent, and decouple
everything as best as makes sense whilst trying to avoid accidental
serialisations).

The reason for the examples in the end is merely for completeness. (I'll
probably add these to our SVN distribution since the question does seem to
crop up fairly often generally speaking!)

If you're looking to do this in a production environment I'm personally an
advocate of learning what's going on in the core and then using an existing
library.

(The reason Kamaelia exists is because I wondered if there was an
alternative, potentially clearer way of writing these things, most
people would quite sensibly just use Twisted - especially given you
can buy a book on it! I personally think Kamaelia is cleaner, but then
I would think that :)

Have fun!


Michael



From jurgenex at hotmail.com  Fri Sep 22 23:12:56 2006
From: jurgenex at hotmail.com (Jürgen Exner)
Date: Sat, 23 Sep 2006 03:12:56 GMT
Subject: String Pattern Matching: regex and Python regex documentation
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
	<45143567.2000903@lazaridis.com>
Message-ID: <YC1Rg.1266$8O1.99@trnddc04>

Ilias Lazaridis wrote:
> Xah Lee wrote:
>> the Python regex documentation is available at:
>> http://xahlee.org/perl-python/python_re-write/lib/module-re.html

Yeah, sure, and the Perl regex documentation is available at 'perldoc 
perlre'.
So what? Is that anything new or surprising?

jue 




From http  Fri Sep  8 16:52:56 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 13:52:56 -0700
Subject: Javadoc style python manual?
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
	<1157733112.626057.74610@e3g2000cwe.googlegroups.com>
	<87hcziytt7.fsf@pobox.com>
Message-ID: <7xr6ymdqs7.fsf@ruckus.brouhaha.com>

jjl at pobox.com (John J. Lee) writes:
> Why do you expect to get useful docs that way?  The canonical Python
> stdlib docs live in LaTeX files, not in the docstrings.  You may find
> some useful bits and pieces in the docstrings too, or you may not.

Yucch.  From

  http://www.gnu.org/software/emacs/manual/html_node/Bug-Criteria.html

"If the on-line documentation string of a function or variable
disagrees with the manual, one of them must be wrong; that is a bug."

I think that's preferable to Python's approach.


From rtw at freenet.co.uk  Tue Sep 26 15:12:51 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Tue, 26 Sep 2006 14:12:51 -0500
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
Message-ID: <Xns984ACDA635C9rtwfreenetREMOVEcouk@216.196.109.145>

Neal Becker wrote in
news:mailman.716.1159290541.10491.python-list at python.org in
comp.lang.python: 

> Any suggestions for transforming the sequence:
> 
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
> 
> into a succession of tuples:
> 
> [(1, 2), (3, 4)...]
> 
> In other words, given a seq and an integer that specifies the size of
> tuple to return, then for example:
> 
> seq = [a,b,c,d,e,f]
> for e in transform (seq, 2):
>   print e
> 
> would return
> (a,b)
> (c,d)
> (e,f)
> 

>>> seq = range(11)
>>> zip(seq[::2], seq[1::2] + [None])
[(0, 1), (2, 3), (4, 5), (6, 7), (8, 9), (10, None)]

>>> seq = range(10)
>>> zip(seq[::2], seq[1::2] + [None])
[(0, 1), (2, 3), (4, 5), (6, 7), (8, 9)]


Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 10:14:43 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 15:14:43 +0100
Subject: Running python from a usb drive
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B43C@vogbs009.gb.vo.local>

| [cjl]
| 
| | Any ideas about how to set file type associations without writing to
| | the registry?
| 
  [Tim Golden]
| Well, yes. Just the same as was in the article you pointed
| to... or have I missed something?

Ah, I see. Presumably the FTYPE / ASSOC commands write things
to the registry behind the scenes. So I assume you mean: 
without writing anything away permanently
which might then be held there in the case of a crash. Well, I
don't think so. You could, I supposed have a script which reset
any associations to their default which could then set up to run
on startup, but I don't know how viable that is for your situation.

TJG

________________________________________________________________________
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From strombrg at dcs.nac.uci.edu  Wed Sep 13 00:08:04 2006
From: strombrg at dcs.nac.uci.edu (Dan Stromberg)
Date: Wed, 13 Sep 2006 04:08:04 GMT
Subject: What's more pythonic?
Message-ID: <pan.2006.09.13.04.08.11.294080@dcs.nac.uci.edu>


Is sample1 or sample2 the more pythonic way of comparing?

class sample1
	def __init__(self, a, b):
		self.a = a
		self.b = b
	def __cmp__(self, other):
		return self.a.__cmp__(other.a)

...or:

class sample2
	def __init__(self, a, b):
		self.a = a
		self.b = b
	def __cmp__(self, other):
		if self.a < other.a:
			return -1
		elif self.a > other.a:
			return 1
		else:
			return 0

?

Thanks!



From Kevin.Smith at sas.com  Thu Sep  7 09:02:59 2006
From: Kevin.Smith at sas.com (Kevin D. Smith)
Date: Thu, 7 Sep 2006 09:02:59 -0400
Subject: How to build extensions on Windows?
Message-ID: <edp56g$66u$1@foggy.unx.sas.com>

I've written a simple Python extension for UNIX, but I need to get it 
working on Windows now.  I'm having some difficulties figuring out how 
to do this.  I've seen web pages that say that MS Visual Studio is 
required, and other that say that's not true, that MinGW will work.  
Then there is Mike Fletcher's web page 
(http://www.vrplumber.com/programming/mstoolkit/) that describes in 
detail how to build extensions, but most of the links to external 
software are no longer valid.  I think it's safe to say that I am 
completely lost, as there appears to be no authoritative, up-to-date 
description on how to make this work.

-- 
Kevin D. Smith



From fuzzyman at gmail.com  Wed Sep 13 19:59:57 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 13 Sep 2006 16:59:57 -0700
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <1158190495.438869.222500@h48g2000cwc.googlegroups.com>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
	<1158190265.017412.203500@h48g2000cwc.googlegroups.com>
	<1158190495.438869.222500@h48g2000cwc.googlegroups.com>
Message-ID: <1158191996.978695.64400@i42g2000cwa.googlegroups.com>


bearophileHUGS at lycos.com wrote:
> Better:
>
> def clean(d):
>     for key,val in d.items():
>         if isinstance(val, dict):
>             val = clean(val)
>         if val is None or val == {}:
>             del d[key]
>     return d

Can you delete values from a dictionary whilst iterating over its items
?

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

>
> a = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
> print clean(a) # Out: {1: {2: 2, 3: {2: 2}}, 2: 2}
> b = {1: {1: {1: None, 2: {1: None}}}, 2: 2, 3: None}
> print clean(b) # Out: {2: 2}
> c = {1: {1: {1: None, 2: {1: None}}}, 2: 2, 3: 0}
> print clean(c) # Out: {2: 2, 3: 0}



From Sibylle.Koczian at Bibliothek.Uni-Augsburg.de  Mon Sep  4 08:10:27 2006
From: Sibylle.Koczian at Bibliothek.Uni-Augsburg.de (Sibylle Koczian)
Date: Mon, 04 Sep 2006 14:10:27 +0200
Subject: upgrade 2.4 -> 2.5 HowTo
In-Reply-To: <44fbdd29$0$28386$ba620e4c@news.skynet.be>
References: <44fbdd29$0$28386$ba620e4c@news.skynet.be>
Message-ID: <4m2jdkF481eqU1@news.dfncis.de>

Helmut Jarausch schrieb:
> Hi,
> 
> what has to be done for upgrading from Python 2.4 to 2.5?
> 
> - How can I find out which packages (in addition to the core packages)
> have been
>   installed up to now
> - Can I just copy   /usr/local/lib/python2.4/site-packages  to
>                     /usr/local/lib/python2.5 ?
> 
> Many thanks for a hint,
> 

Which OS?

Windows: control panel / software will list all python packages which
came with separate installers.

Linux: the package manager of your distribution should tell you what's
installed.

-- 
Dr. Sibylle Koczian
Universitaetsbibliothek, Abt. Naturwiss.
D-86135 Augsburg
e-mail : Sibylle.Koczian at Bibliothek.Uni-Augsburg.DE


From manuel at prolink.de  Fri Sep  1 05:56:07 2006
From: manuel at prolink.de (Manuel Bleichner)
Date: Fri, 01 Sep 2006 11:56:07 +0200
Subject: Classes referencing each other
In-Reply-To: <Xns983167DE33BB3duncanbooth@127.0.0.1>
References: <mailman.10236.1157100375.27775.python-list@python.org>
	<Xns983167DE33BB3duncanbooth@127.0.0.1>
Message-ID: <op.te61vtd858416w@merkur.intern.prolink.de>

Thanks for your answer :)

> You could use a function:
>
> class A(object):
>    @staticmethod
>    def connected_to(): return [B, C]
>    <other attributes...>

I already thought about such a solution, but since
my code has to be compatible with python 2.3, i would
have to use the connected_to = staticmethod(connected_to)
syntax, which bloats the code and makes it quite unreadable.


> or just store the names of the classes and do a similar fixup once they  
> are
> all defined:
>
> class A(object):
>    connected_to = ['B', 'C']
>    <other attributes...>
>
> for cls in globals().values():
>     if (type(cls) is type and
>         hasattr(cls, 'connected_to')):
>         cls.connected_to = [globals()[c] for c in cls.connected_to ]

This solution seems good to me. It won't work for me as it is,
because the structure of the classes is actually a bit more
complex, but it pushed me in the right direction.

Thanks again,
Manuel


From sjdevnull at yahoo.com  Sat Sep 23 19:57:19 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 23 Sep 2006 16:57:19 -0700
Subject: Building Vim against Python 2.5
Message-ID: <1159055839.216876.191340@d34g2000cwd.googlegroups.com>

[Any python/C interface gurus please correct me if my understanding is
wrong, as this fix is slated for inclusion in future versions of
vim--thanks!]

Just as a heads up for anyone building vim with python2.5 as the
extension language:

Simple solution: Python 2.5 has tightened up how it does memory
allocation, so you need to ":%s/PyMem_DEL/Py_DECREF" in if_python.c or
you'll see segfaults when trying to use :py or :pyf statements.

Longer explantation: Every instance of PyMem_DEL in if_python.c is on a
standard PyObject * allocated with Py_BuildValue or similar.

If I understand correctly, really, PyMem_DEL is only supposed to be
paired with PyMem_ALLOC and any PyObject * objects should be freed with
Py_DECREF.  But in earlier versions the two internally used the same
allocater so it happened to work; Python 2.5 is stricter about this.

I've only tested with vim 7.0 and python 2.3 and 2.5, but the same
change should work fine in older versions of vim.

The fix has been sent to Bram so future versions of vim should build
fine out of the box against python 2.5.



From fredrik at pythonware.com  Tue Sep 26 17:16:44 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 23:16:44 +0200
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
Message-ID: <efc5bt$q4m$1@sea.gmane.org>

flyingisfun1217 at gmail.com wrote:

> I know that the most known tkinter intro guide at the time is "An
> Intorduction to Tkinter" by Frederick Lundh, but after trying some of
> the examples, I noticed that they did not work

what examples are this ?  are you sure it's not a problem with your IDE 
rather than a problem with Tkinter ?

</F>



From prudek at bvx.cz  Fri Sep 15 10:47:07 2006
From: prudek at bvx.cz (Milos Prudek)
Date: Fri, 15 Sep 2006 16:47:07 +0200
Subject: xmlrpc with Basic Auth
Message-ID: <200609151647.08288.prudek@bvx.cz>

I need to use XML-RPC call with Basic Authorization in HTTP headers. I found 
xmlrpclibBasicAuth.py, and it can be used as follows:

from xmlrpclibBasicAuth import Server
s=Server("http://www.example.com/rpc.php","user","pwd")
print s.system.listMethods()

Is this possible in plain xmlrpclib, without xmlrpclibBasicAuth.py? 

I found the Transport class in xmlrpclib, and it has a method "get_host_info", 
which parses "user:pwd" out of "user:pwd at host". But when I tried to 
instantiate Server, it threw error "unsupported XML-RPC protocol". Here is a 
snippet:

from xmlrpclib import Server
s=Server("user:pwd at http://www.example.com/rpc.php")
...
File "/usr/local/lib/python2.3/xmlrpclib.py", line 1293, in __init__
    raise IOError, "unsupported XML-RPC protocol"
IOError: unsupported XML-RPC protocol

I know that I am using it incorrectly. Does the basic authentication support 
in xmlrpclib mean something else than I take it for?

-- 
Milos Prudek


From skip at pobox.com  Tue Sep  5 13:40:35 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 12:40:35 -0500
Subject: threading support in python
In-Reply-To: <7008329d0609051019t3ab9e840ge0021ff20b24e4f0@mail.gmail.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
	<17661.37027.891231.814161@montanaro.dyndns.org>
	<edk8r7$qp$1@sea.gmane.org>
	<17661.44847.579165.784506@montanaro.dyndns.org>
	<7008329d0609051019t3ab9e840ge0021ff20b24e4f0@mail.gmail.com>
Message-ID: <17661.46739.911378.339838@montanaro.dyndns.org>


    Andre> This seems to be an important issue and fit for discussion in the
    Andre> context of Py3k. What is Guido's opinion?

Dunno.  I've never tried channeling Guido before.  You'd have to ask him.
Well, maybe Tim Peters will know.  He channels Guido on a fairly regular
basis.

Skip


From eric.goetzinger at seagate.com  Wed Sep 20 11:52:35 2006
From: eric.goetzinger at seagate.com (goetzie)
Date: 20 Sep 2006 08:52:35 -0700
Subject: Trouble Passing Array of Strings (using Numeric) to C Extension Module
Message-ID: <1158767555.487359.12520@m7g2000cwm.googlegroups.com>

I am using Python 2.4.1 and Numeric 23.8 and running on Windows XP.  I
am passing a Numeric array of strings (objects) to a C Extension module
using the following python code:

   import Numeric
   import TestDLL    # my C Extension Module

   a = Numeric.array(['foo', 'bar'], 'O' )
   print 'a =', a
   print 'type a[0] =', type(a[0])

   print TestDLL.StringArrayIn( a )

And here is the relevent code from my C Extension module:

   static PyObject * _StringArrayIn( PyObject *self, PyObject *args )
   {
      PyObject *pObject;  // input array
      PyArrayObject *pArray;  // contiguous array
      int iCount;
      int iStride;
      BOOL bString;

      if ( !PyArg_ParseTuple( args, "O", &pObject ) ) return NULL;

      if ( ( pArray = ( PyArrayObject * )PyArray_ContiguousFromObject(
pObject, PyArray_OBJECT, 1, 1 ) ) == NULL ) return NULL;

      iCount = pArray->dimensions[0];
      iStride = pArray->strides[0];

      bString = PyString_Check( ( PyObject * )( pArray->data ) );

      Py_DECREF( pArray );
      return Py_BuildValue( "iiO", iCount, iStride, PyBool_FromLong(
bString ) );
   }

   static PyMethodDef Methods[] =
   {
       { "StringArrayIn",  _StringArrayIn,  METH_VARARGS,   ""   },
       { NULL,             NULL,            0,              NULL } /*
Sentinel */
   };

This code produces the following output:

   a = [foo  bar ]
   type a[0] = <type 'str'>
   (2, 4, False)

The iCount and iStride values are as I expect (2 and 4 respectively),
but performing a PyString_Check on the first array element (or more
likely, what I think is the first array element) returns 'False'.

BTW, the output above is from running the Python interpreter from the
command line.  When I run this code in IDLE, I get a GPF if I don't
comment out the call to the PyString_Check function :-(

What am I doing wrong here?



From andrew-news at andros.org.uk  Mon Sep 25 03:54:42 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Mon, 25 Sep 2006 08:54:42 +0100
Subject: Unexpected behaviour of csv module
In-Reply-To: <1159148247.308716.234600@i42g2000cwa.googlegroups.com>
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
	<1159148247.308716.234600@i42g2000cwa.googlegroups.com>
Message-ID: <ef8208$q37$1$8300dec7@news.demon.co.uk>

John Machin wrote:
> A better workaround IMHO is to strip each *field* after it is received
> from the csv reader. In fact, it is very rare that leading or trailing
> space in CSV fields is of any significance at all. Multiple spaces
> ditto. Just do this all the time:
> 
> row = [' '.join(x.split()) for x in row]

The problem with removing the spaces after they are received from the 
csv reader is if you want to use DictReader. I like to use DictReader, 
without passing it the field list. The module then reads the field list 
from the first line, and in this situation you don't get an opportunity 
to strip the spaces from that.


From onurb at xiludom.gro  Tue Sep 12 11:29:32 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 12 Sep 2006 17:29:32 +0200
Subject: egg and modpython
In-Reply-To: <1158058488.037703.263280@e63g2000cwd.googlegroups.com>
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
	<1157969582.029638.136340@i42g2000cwa.googlegroups.com>
	<45066f21$0$28612$636a55ce@news.free.fr>
	<1158058488.037703.263280@e63g2000cwd.googlegroups.com>
Message-ID: <4506d25e$0$12791$626a54ce@news.free.fr>

Paul Boddie wrote:
> Bruno Desthuilliers wrote:
>> eggs are the Python's equivalent to Java's JAR, not a RPM-like. I said
>> it was not an egg-specific issue (which is not totally accurate) because
>> it mostly have to do with loading dynamic libs (.so, .dll etc) from
>> zipped files.
> 
> True. It is notable that various Java application servers (to consider
> the questioner's original problem) do unpack .war files, which probably
> share more properties with .egg files than .jar files do. Indeed, I
> don't recall a single occasion where I've ever needed to unpack .jar
> files to have them successfully used by Java programs.

AFAIK, jar files don't include native dynamic libs... But I'm not a Java
expert (happily forgot most of what I used to know about this language).

>>> Debian packages even compile the bytecode
>>> files to ensure that nothing tries (and fails) to write them to
>>> privileged locations afterwards.
>> So does eggs. But once again, eggs are *not* a general-purpose package
>> management system like apt, RPM, emerge etc...
> 
> However, it seems to me that the setuptools and EasyInstall ecosystem,
> whilst a remarkable achievement, has grown in scope sufficiently to
> confuse such comparisons. Some .egg files are more than just being like
> .jar files, as I note above, and with additional dependency information
> included (as seems to be encouraged), one is suddenly required to deal
> with a system that resembles a Python-centric package and dependency
> management system rolled into one, operating in parallel with whatever
> native package manager and whatever dependency management system
> (they're typically separate things) that may be in operation.

Yes, true. But I'd still say that it's more a problem of proper
packaging (ie, an egg with dynamic libs inside should better not be
packaged as 'zip-safe') than a bug in the eggs system itself.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From bdesth.quelquechose at free.quelquepart.fr  Sat Sep 23 17:28:50 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 23 Sep 2006 23:28:50 +0200
Subject: something for itertools
In-Reply-To: <1158361110.726215.98250@i3g2000cwc.googlegroups.com>
References: <mailman.156.1158356427.10491.python-list@python.org>
	<1158361110.726215.98250@i3g2000cwc.googlegroups.com>
Message-ID: <4515a389$0$31389$626a54ce@news.free.fr>

George Sakkis a ?crit :
> Daniel Nogradi wrote:
> 
>>In a recent thread,
>>http://mail.python.org/pipermail/python-list/2006-September/361512.html,
>>a couple of very useful and enlightening itertools examples were given
>>and was wondering if my problem also can be solved in an elegant way
>>by itertools.
>>
>>I have a bunch of tuples with varying lengths and would like to have
>>all of them the length of the maximal and pad with None's. So
>>something like
>>
>>a = ( 1, 2, 3 )
>>b = ( 10, 20 )
>>c = ( 'x', 'y', 'z', 'e', 'f' )
>>
>>should turn into
>>
>>a = ( 1, 2, 3, None, None )
>>b = ( 10, 20, None, None, None )
>>c = ( 'x', 'y', 'z', 'e', 'f' )
>>
>>Of course with some len( ) calls and loops this can be solved but
>>something tells me there is a simple itertools-like solution.
>>
>>Any ideas?
> 
> 
> Not the most readable one-liner of all times, but here it goes:
> 
> a,b,c = zip(*map(None,a,b,c))
> 

Simple and beautiful - but effectively requires a comment to explain 
what's going on !-)



From srikrishnamohan at gmail.com  Mon Sep  4 11:32:16 2006
From: srikrishnamohan at gmail.com (km)
Date: Mon, 4 Sep 2006 21:02:16 +0530
Subject: threading support in python
In-Reply-To: <1157381880.697001.260070@m73g2000cwd.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
Message-ID: <f4cc03640609040832m4c385cbaub59b8b18af98dc7d@mail.gmail.com>

Hi all,
Are there any alternate ways of attaining true threading in python ?
if GIL doesnt go  then does it mean that python is useless for
computation intensive scientific applications which are in need of
parallelization in threading context ?

regards,
KM
---------------------------------------------------------------------------
On 4 Sep 2006 07:58:00 -0700, bayerj <bayerj at in.tum.de> wrote:
> Hi,
>
> GIL won't go. You might want to read
> http://blog.ianbicking.org/gil-of-doom.html .
>
> Regards,
> -Justin
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From wuwei23 at gmail.com  Thu Sep 21 03:34:12 2006
From: wuwei23 at gmail.com (alex23)
Date: 21 Sep 2006 00:34:12 -0700
Subject: view page source or save after load
In-Reply-To: <mailman.385.1158823634.10491.python-list@python.org>
References: <mailman.373.1158814163.10491.python-list@python.org>
	<1158816399.831104.148250@b28g2000cwb.googlegroups.com>
	<mailman.385.1158823634.10491.python-list@python.org>
Message-ID: <1158824052.747820.114210@b28g2000cwb.googlegroups.com>


Gabriel Genellina wrote:
<fixes for my stupidity>

Thanks for the corrections, Gabriel. I really need to learn to
cut&paste working code :)

Cheers.

-alex23



From fakeaddress at nowhere.org  Thu Sep 14 17:13:11 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Thu, 14 Sep 2006 21:13:11 GMT
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1158251211.415884.51690@e3g2000cwe.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<xWnMg.9702$yO7.1766@newssvr14.news.prodigy.com>
	<1158251211.415884.51690@e3g2000cwe.googlegroups.com>
Message-ID: <HBjOg.1068$TV3.741@newssvr21.news.prodigy.com>

Ben Sizer wrote:
> Bryan Olson wrote:
>> Ben Sizer wrote:
>>> It's not a crackpot theory. It's a completely reasonable theory. SQL is
>>> based on relational algebra, which provides a mathematical set of
>>> operators for grouping data that is stored in separate sets. That data
>>> is selected and projected according to its value, and nothing else. The
>>> concept of it having a 'type' has been overlaid on top of this,
>>> presumably to facilitate efficient implementation, which tends to
>>> require fixed-width rows (and hence columns). It's not necessary in any
>>> sense, and it's reasonable to argue that if it was trivial to implement
>>> variable width columns as efficiently as fixed width columns, that
>>> explicit data types might never have needed to exist.

>> The mathematical definition of the relational model includes
>> that data values are drawn from specific sets.
> 
> Well, I did say relational algebra, which from what I understand
> predates the official 'relational model'.

Relational algebra got into it when you said "SQL is based on
relational algebra". SQL is based on the relation model.
Incidentally SQL's expressions are closer to relation calculus
than to relational algebra.

Furthermore, relation algebra does deal with types. One can,
for example, infer the type of a result from the type of the
operands.


>> Implementing variable width columns has nothing to do with it.
> 
> On a practical level, it has lots to do with it!

There are subtler points on that, but it's not the issue here.

>> Here's
>> the reference:
>>
>>     1.3. A Relational View of Data
>>
>>     The term relation is used here in its accepted mathematical
>>     sense. Given sets S1, S2, ???, Sn, (not necessarily
>>     distinct), R is a relation on these n sets if it is a set
>>     of n-tuples each of which has its first element from S1,
>>     its second element from S2, and so on [1]. We shall refer to
>>     Sj as the jth domain of R.
> 
> Does it specify anywhere that sets S1...Sn cannot each be the universal
> set?

No; it indicates that they can be different, and when they are,
value not of the given set are not legal.

> To put it another way - although the spec implies the existence of
> limited set domains, and data types enforce limited domains, I don't
> think a requirement to allow limited domains is a requirement for
> static data types.

One might argue that a one-atom-type-only DBMS can still be
relational, but that's not what SQLite offers. As we've seen,
one does declare the type of a column, and the DBMS seems to
prefer the stated type in that it will sometimes convert
values of other types.


-- 
--Bryan


From claird at lairds.us  Thu Sep 21 11:34:31 2006
From: claird at lairds.us (Cameron Laird)
Date: Thu, 21 Sep 2006 15:34:31 +0000
Subject: How to return an "not string' error in function?
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
Message-ID: <71oau3-vr5.ln1@lairds.us>

In article <1158848968.493858.96600 at k70g2000cwa.googlegroups.com>,
 <breakfastea at gmail.com> wrote:
>Thank you so much it answers my humble question perfectly:)
>

HOWEVER, to answer you final question, yes, there is a different
and, in general, better, way.  While there's a lot to say about
good Python style and typing, I'll summarize at a high level:
you shouldn't have to check types.  I can understand that you
are working to make a particular function particularly robust, 
and are trying to account for a wide range of inputs.  This is
healthy.  In stylish Python, though, you generally don't need
type checking.  How would it be, for example, if someone passed
the number 3 to your function.  Is that an error?  Do you want
it automatically interpreted as the string "3"?  You can achieve
these results withOUT a sequence of

  if isinstance(...
  elif isinstance(...
  ...

perhaps with something as simple as

  my_input = str(my_input).

One of us will probably follow-up with a reference to a more
detailed write-up of the subject.


From jon+usenet at unequivocal.co.uk  Sat Sep 23 22:28:17 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 24 Sep 2006 02:28:17 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
Message-ID: <slrnehbra1.kpr.jon+usenet@snowy.squish.net>

In article <mailman.499.1159035571.10491.python-list at python.org>, Fredrik Lundh wrote:
> Lawrence D'Oliveiro wrote:
>> So I think the default for the second argument to cgi.escape should be
>> changed to True. Or alternatively, the second argument should be removed
>> altogether, and quotes should always be escaped.
> 
> you're confused: cgi.escape(s) is designed to be used for ordinary text, 
> cgi.escape(s, True) is designed for attributes.  if you use the code the 
> way it's intended to be used, it works perfectly fine.

He's not confused, he's correct; the author of cgi.escape is the
confused one. The optional extra parameter is completely unnecessary
and achieves nothing except to make it easier for people to end up
with bugs in their code.

Making cgi.escape always escape the '"' character would not break
anything, and would probably fix a few bugs in existing code. Yes,
those bugs are not cgi.escape's fault, but that's no reason not to
be helpful. It's a minor improvement with no downside.

One thing that is flat-out wrong, by the way, is that cgi.escape()
does not encode the apostrophe (') character. This is essentially
identical to the quote character in HTML, so any code which escaping
one should always be escaping the other.


From mensanator at aol.com  Tue Sep  5 15:23:32 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 5 Sep 2006 12:23:32 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.32.1157478476.5279.python-list@python.org>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
Message-ID: <1157484212.885076.304340@h48g2000cwc.googlegroups.com>


skip at pobox.com wrote:
> >> I think your whole experience is based on it.
>
>     >> But shouldn't a significant feature like that be explained in the
>     >> Python manuals? Why should I go dig up Sqlite FAQs to learn what
>     >> should have been in the manuals?
>
> I don't know, but I will take a stab at a plausible explanation.  First,
> sqlite support has only been in Python for a month or three.  Its first
> official unveiling will be when 2.5 is released.

Although possibly too late for the final release, now would be a
good time to straighten out the documentation.

> Second, it's common when
> wrapping functionality into Python to rely on the documentation for the
> thing being wrapped.  The thinner the wrapper, the more you tend to rely on
> the underlying documentation.  Also, the more functionally rich the thing
> you've wrapped, the more you rely on the underlying documentation.  I
> wouldn't be at all surprised if the pysqlite author operated under that
> assumption.

Ok, that's certainly plausible. But it's not an excuse. The thinner the
documentation, the greater the emphasis should be made to point
the reader to a more adequate source. Simply listing the Sqlite home
page at the bottom of the page is hardly good enough. It should be
explicitly stated in bold letters that the reader should go read the
Sqlite FAQ because it radically differs from *real* databases and
provide a seperate link to it in the body of the documentation.

> That the Python developers didn't pick up on the issue is not
> surprising.  I'm not sure how many of them are (py)sqlite users, probably
> relatively few.

I would be surprised if they had never used ANY database. A little
thing like dynamic field typing will simply make it impossible to
migrate your Sqlite data to a *real* database.

What I'll do is re-format my rant, suggest how *I* would do the
documentation, fix the errors I found in the examples and send it
off to the Python bug tracking as suggested in the manuals.

How's that as a plan?

> 
> Skip



From steve at holdenweb.com  Sun Sep  3 07:55:20 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 03 Sep 2006 12:55:20 +0100
Subject: python loops
In-Reply-To: <1157276620.968479.196110@h48g2000cwc.googlegroups.com>
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>	<20060831193353.02FD61E4002@bag.python.org>	<mailman.10240.1157105262.27775.python-list@python.org>	<1157187866.833841.295930@m79g2000cwm.googlegroups.com>	<mailman.10298.1157273110.27775.python-list@python.org>
	<1157276620.968479.196110@h48g2000cwc.googlegroups.com>
Message-ID: <edefq3$2i2$2@sea.gmane.org>

Nicko wrote:
> Fredrik Lundh wrote:
> 
>>Nicko wrote:
>>
>>
>>>... In the case of the idiom "for i in
>>>range(x):..." there absolutely no utility whatsoever in creating and
>>>recording the list of objects.
>>
>>for short lists, both objects create the *same* number of objects.
> 
> 
> This is true for long lists too, if you iterate over the full range,
> but what I wrote was "creating and recording". The range() function
> generates a variable-sized, potentially large object and retains all of
> the items in the range while xrange() generates a fairly small, fixed
> sized object and only hangs on to one item at a time.  Furthermore,
> it's not at all uncommon for loops to be terminated early. With range()
> you incur the cost of creating all the objects, and a list large enough
> to hold them, irrespective of if you are going to use them.
> 
> 
>>if you cannot refrain from pulling arguments out of your ass, you not
>>really the right person to talk about hygiene.
> 
> 
> I'm impressed but your mature argument. Clearly, in the face of such
> compelling reasoning, I shall have to concede that we should all
> generate our range lists up front.
> 
I'm impressed that you think any of this will be news to the effbot, 
whose sagacity is exceeded only by his irritability in the face of 
ignorance.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep 25 16:31:58 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 25 Sep 2006 22:31:58 +0200
Subject: R.S.I. solutions?
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
Message-ID: <slrnehgf5u.i8g.sybrenUSE@schuimige.stuvel.eu>

Paddy enlightened us with:
> All this keyboarding has finally caught up with me and I'm getting
> aches in my fingers.

Use more force with your fingers, and take regular typing breaks.
Often RSI is caused by subtle movements without applying a lot of
force. 

Another good way to beat RSI is to learn juggling! Get three balls,
search Google Video for some juggling lessons, and get going. It's
great fun, and a good way to exercise your upper body.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From rzantow at gmail.com  Thu Sep 28 08:01:37 2006
From: rzantow at gmail.com (rzed)
Date: Thu, 28 Sep 2006 08:01:37 -0400
Subject: does anybody earn a living programming in python?
References: <pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>
	<mailman.864.1159423300.10491.python-list@python.org>
Message-ID: <Xns984C51A8E48DArzantowgmailcom@208.49.80.253>

"Hendrik van Rooyen" <mail at microcorp.co.za> wrote in
news:mailman.864.1159423300.10491.python-list at python.org: 

[...]
> Oh dont be so pedantic - countless - without count - probably
> just means that nobody has bothered to count them...

Without being particularly pedantic: no, it doesn't. It means "too 
many to count". Though I would have taken Anthony's usage ("there's 
countless other people I know...") less than literally.

-- 
rzed



From pope_ratzinger_benedict at india.com  Sat Sep 16 12:52:21 2006
From: pope_ratzinger_benedict at india.com (pope_ratzinger_benedict at india.com)
Date: 16 Sep 2006 09:52:21 -0700
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of Zion
Message-ID: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>

Do not bury your head in the sand ... Do not practice denial ... It
will only bring you to terrible shame and grief ... Do not be afraid of
saying the truth ... Do not be afraid of death ... God will take care
of you and your kins as he took care of the flock of Abraham, Moses and
Jesus.

Here you will find all the truth, movies, audios and proof for your
eyes to see (even the swiss are beginning to doubt 911) :

www.scholarsfor911truth.org
www.journalof911studies.org
www.st911.org

also go to Alex Jones site:

infowars.com
prisonplanet.com

Distribute fliers on the site at your churches and synagogues, in your
schools. Call your elected officials. Mail anonymously to your local
fire station chiefs and your local police
sherrifs. Send, to any and all CIA, FBI, Military personell and Court
Judges that you know.

We need to move fast and quick before the terrorists of 911 bring
another false flag terrorism
which may be biological, nuclear or what we cannot even imagine.

They dont care about the lives or the freedom of the american people.
They only love their evil agendas.

God Bless you All

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From jantod at gmail.com  Fri Sep 15 10:44:06 2006
From: jantod at gmail.com (Janto Dreijer)
Date: 15 Sep 2006 07:44:06 -0700
Subject: UDP packets to PC behind NAT
In-Reply-To: <1158330333.091031.109700@m73g2000cwd.googlegroups.com>
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<450a6ba9$0$31654$626a54ce@news.free.fr>
	<1158330333.091031.109700@m73g2000cwd.googlegroups.com>
Message-ID: <1158331446.895412.246630@d34g2000cwd.googlegroups.com>

Oops. That second UDPSock = socket(...) in the server.py shouldn't be
there.

Janto Dreijer wrote:
> Awesome! I haven't tested it on the actual server but I think it works.
> Thanks!
> I prefer a TCP connection solution and will post one if it works.
>
> server.py
> ========
> from socket import *
> print "listening"
> UDPSock = socket(AF_INET, SOCK_DGRAM)
> UDPSock.bind(("localhost", 1234)) # visibility to outside world
> payload, addr = UDPSock.recvfrom(1024)
> print "message from %s: %s" % (`addr`, payload)
> UDPSock = socket(AF_INET, SOCK_DGRAM) # open UDP socket
> result = UDPSock.sendto("your public address is %s" % `addr`, addr)
>
> client.py
> =====
> from socket import *
> UDPSock = socket(AF_INET, SOCK_DGRAM) # open UDP socket
> result = UDPSock.sendto("what's my public address?", ("localhost",
> 1234))
> payload, addr = UDPSock.recvfrom(1024)
> print payload
>
> results:
> ====
> listening
> message from ('127.0.0.1', 32787): what's my public address?
> 
> your public address is ('127.0.0.1', 32787)



From steve at holdenweb.com  Tue Sep  5 02:59:00 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 07:59:00 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
Message-ID: <edj76d$6n6$2@sea.gmane.org>

mensanator at aol.com wrote:
> Probably just me. I've only been using Access and SQL Server
> for 12 years, so I'm sure my opinions don't count for anything.
[...]
> 
> Ok, next issue, what the fuck are [varchar] and [decimal]?
[..]
> 
> It's still fuckin' goofy.
> 
Language ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From python.list at tim.thechases.com  Fri Sep  8 17:46:12 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 08 Sep 2006 16:46:12 -0500
Subject: best split tokens?
In-Reply-To: <mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
Message-ID: <4501E4A4.6090804@tim.thechases.com>

> py> import re
> py> rgx = re.compile(r'(?:\s+)|[()\[\].,?;-]+')
> py> [s for s in rgx.split(astr) if s]
> ['Four', 'score', 'and', 'seven', 'years', 'ago', 'our', 'forefathers', 
> 'who', 'art', 'in', 'heaven', 'hallowed', 'be', 'their', 'names', 'did', 
> 'forthwith', 'declare', 'that', 'all', 'men', 'are', 'created', 'to', 
> 'shed', 'their', 'mortal', 'coils', 'and', 'to', 'be', 'given', 'daily', 
> 'bread', 'even', 'in', 'the', 'best', 'of', 'times', 'and', 'the', 
> 'worst', 'of', 'times', 'With', 'liberty', 'and', 'justice', 'for', 
> 'all', 'William', 'Shakespear']

This regexp could be shortened to just

	rgx = re.compile('\W+')

if you don't mind numbers included you text (in the event you 
have things like "fatal1ty", "thing2", or "pdf2txt") which is 
often the case...they should be considered part of the word.

If that's a problem, you should be able to use

	rgx = re.compile('[^a-zA-Z]+')

This is a bit Euro-centric...ideally Python regexps would support 
Posix character classes, so one could use

	rgx = re.compile('[^[:alpha:]]+')


or something of the like...however, that fails on my python2.4 here.

-tkc




From nogradi at gmail.com  Thu Sep  7 08:43:22 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Thu, 7 Sep 2006 14:43:22 +0200
Subject: getting quick arp request
In-Reply-To: <1157629209.994088.152670@i42g2000cwa.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>
	<1157565629.691753.115910@e3g2000cwe.googlegroups.com>
	<mailman.114.1157623864.5279.python-list@python.org>
	<edorvq$nv2$1@south.jnrs.ja.net>
	<mailman.116.1157625350.5279.python-list@python.org>
	<1157629209.994088.152670@i42g2000cwa.googlegroups.com>
Message-ID: <5f56302b0609070543k573793d8g73b828698a0b4316@mail.gmail.com>

> 2)
> Still without the above patch on windows, the software "angry ip scan"
> for example managed to output a lot of more socket connection. How is
> it possible ?

This "angry ip scan" thing is written in Java, perhaps you can find it
out from the source:

http://svn.sourceforge.net/viewvc/ipscan/ipscan/src/net/azib/ipscan/


From g_sauthoff at web.de  Mon Sep  4 16:50:48 2006
From: g_sauthoff at web.de (Georg Sauthoff)
Date: 4 Sep 2006 20:50:48 GMT
Subject: Access elements from nested tuples
Message-ID: <4m3ht8F4avl8U1@news.dfncis.de>

Hi,

t = (1, (2, 3))

I am bit suprised, that I cannot access '3' via:
t[1].[1] # syntax error

But t[1].__getitem__(1) works like expected.

Why is that?

Regards
Georg Sauthoff


From larry.bates at websafe.com  Wed Sep 13 18:10:39 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 13 Sep 2006 17:10:39 -0500
Subject: win32service (wxpython) -- i cannot install service
In-Reply-To: <1158022444.651819.185390@d34g2000cwd.googlegroups.com>
References: <1157948027.662154.233470@p79g2000cwp.googlegroups.com>
	<45056AFE.8060501@websafe.com>
	<1158022444.651819.185390@d34g2000cwd.googlegroups.com>
Message-ID: <450881DF.7040307@websafe.com>

kkt49 wrote:
> under code service install => ok
> 
>     _svc_name_ = r'moin_service'
>     _svc_display_name_ = r'moin_service'
>     start_cmd = r"c:\mmde\moin.exe"
>     #info = ['', '', '']
> 
>     def __init__(self):
>         #self._svc_name = info[0]
>         #self._svc_display_name_ = info[1]
>         #self.start_cmd = info[2]
> 
> but, i want dynamic _svc_name_  and start_cmd

Services aren't dynamic in nature.  They are static, are
given names (that are used to start, stop, etc.) and get
installed into servicemanager on Windows workstation or
server.  Their behavior could be dynamic, that is you could
change what they do by communicating with them via external
means.

I think you better back up and tell us what you are trying
to do at a higher level.  Perhaps we can help more.

-Larry


From Matthew.Warren at Digica.com  Fri Sep 29 07:23:40 2006
From: Matthew.Warren at Digica.com (Matthew Warren)
Date: Fri, 29 Sep 2006 12:23:40 +0100
Subject: Problems with Python 2.5 installer.
In-Reply-To: <1159524086.088796.75980@b28g2000cwb.googlegroups.com>
Message-ID: <D4F9316ACC9D20489CC81D19B8A87D5B039FE572@UKEX01.Digica.local>


-----Original Message-----
From: python-list-bounces+matthew.warren=digica.com at python.org
[mailto:python-list-bounces+matthew.warren=digica.com at python.org] On
Behalf Of paw
Sent: 29 September 2006 11:01
To: python-list at python.org
Subject: Re: Problems with Python 2.5 installer.


John Machin wrote:
> paw wrote:
> > I have ran the MSI installer for Python 2.5 several times attempting
to
> > install to C:
> > Python, however all of the files are placed in C:\ .  The installer
is
> > told to only install files for me, beyond that I have only chosen
the
> > defaults.
>
> What do you mean by "install to C: <newline> Python"? Can you tell us
> (unambiguously, on one line) what directory you chose? Is there any
> good reason why you didn't take the default, which is
>     C:\Python25
> ?


Could this happen if c:\python does not exists and creating it fails for
some reason, or if permissions are incorrect? 


This email is confidential and may be privileged. If you are not the intended recipient please notify the sender immediately and delete the email from your computer. 

You should not copy the email, use it for any purpose or disclose its contents to any other person.
Please note that any views or opinions presented in this email may be personal to the author and do not necessarily represent the views or opinions of Digica.
It is the responsibility of the recipient to check this email for the presence of viruses. Digica accepts no liability for any damage caused by any virus transmitted by this email.

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From bj_666 at gmx.net  Mon Sep 18 16:29:20 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Mon, 18 Sep 2006 22:29:20 +0200
Subject: How to find number of characters in a unicode string?
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
Message-ID: <pan.2006.09.18.20.29.20.510034@gmx.net>

In <20060918221814.08625ea2.randhol+valid_for_reply_from_news at pvv.org>,
Preben Randhol wrote:

> If I use len() on a string containing unicode letters I get the number
> of bytes the string uses. This means that len() can report size 6 when
> the unicode string only contains 3 characters (that one would write by
> hand or see on the screen). Is there a way to calculate in characters
> and not in bytes to represent the characters.

Yes and you already seem to know the answer:  Decode the byte string and
use `len()` on the unicode string.

Ciao,
	Marc 'BlackJack' Rintsch


From NoelByron at gmx.net  Wed Sep  6 09:36:04 2006
From: NoelByron at gmx.net (NoelByron at gmx.net)
Date: 6 Sep 2006 06:36:04 -0700
Subject: How to insert an email-link into wxPython's HtmlWindow
In-Reply-To: <1157539420.812552.60770@m79g2000cwm.googlegroups.com>
References: <1157539420.812552.60770@m79g2000cwm.googlegroups.com>
Message-ID: <1157549764.927420.98170@i3g2000cwc.googlegroups.com>

Override OnLinkClicked() and check the passed link info for the 'mail:'
prefix. And if its there, don't call the OnLinkClicked() method of the
base class, to prevent wxWidgets from loading this link as a HTML
ressource.

Now, you have reduced your problem to: how do I call the standard Email
client? I have no idea...


Have fun,
Noel



From metaperl.etc at gmail.com  Tue Sep 26 16:59:48 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 26 Sep 2006 13:59:48 -0700
Subject: for: else: - any practical uses for the else clause?
Message-ID: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>

A very old thread:
http://groups.google.com/group/comp.lang.python/browse_frm/thread/2c5022e2b7f05525/1542d2041257c47e?lnk=gst&q=for+else&rnum=9#1542d2041257c47e

discusses the optional "else:" clause of the for statement.

I'm wondering if anyone has ever found a practical use for the else
branch?



From lycka at carmen.se  Fri Sep  8 06:46:40 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Fri, 08 Sep 2006 12:46:40 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157667594.051943.265040@d34g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
Message-ID: <edrhmg$5t3$1@wake.carmen.se>

While I can understand your frustration, I think it is
important to think about the tone in our postings here.
Hydrocephalus is one of the most common birth defects,
and it's not terribly unlikely that someone who reads
this has a family member or someone else in his proximity
who suffers from this condition.

mensanator at aol.com wrote:
> "Fixed"? Up until now, I didn't think it was possible for
> crackpot theories to be implemented in computer science.
> This is absolutely the craziest thing I've ever heard.

Still, many people with lots of experience in databases
use it, and prefer it for certain kinds of applications.
All systems have limitations and deviations, and those
limitations and deviations are stated more clearly for
SQLite than for most commercial products at least. The
market leader Oracle still can't store empty strings in
VARCHAR fields for instance. They are silently converted
to NULL. I'm pretty sure that has been in clear violation
to the official spec since 1986 at least.

As far as I understand, noone here is forcing you to use
SQLite, and with your long experience of MS Access I'd
expect you to be fairly used to "almost SQL"... It's
some time since I used Jet/Access now, but I had much
more problems with that than I've had with SQLite.

SQLite is built in Tcl, by someone who appreciates the
way Tcl works, with its weak typing. I don't think Tcl's
type handling is nearly as clever as Python's, but I
think it's a good thing that Python's standard lib finally
has a DB-API compliant module, and while I would have
preferred something that was closer to standard SQL, I
don't know of a better candidate than SQLite.

It's good that it's usable without a server setup, and
that it's very light weight. A Jet engine is obviously
not an option, and I would have preferred SQLite even
if Jet was open source and worked on all platforms.
(Well, if JET *was* open source, I suspect it would
have been fixed by now.) It's possible that one could
have used the embedded version of Firebird instead, but
in my experience that's not nearly as lean or easy to
deploy.

With your long experience of Access and SQL Server I'm
sure you know well that any attempt to build a working
database application requires extensive knowledge of
the backend to understand its peculiarities and
limitations.

The list of software projects where not quite competent
developers built Access applications that worked ok in
small scale tests and failed catastrophically in real
life is looong...

Of course, if you've stayed with one vendor for 15 years,
I can imagine that you've forgotten how long it took you
Having worked with half a dozen backends or so, I'm no
longer surprised that SQL can be interpreted in so many
ways... I agree that SQLite is unique in it's approach
to typing, but if you are aware of this, it's really not
a big problem.



From j4jones at ptd.net  Sun Sep  3 20:57:40 2006
From: j4jones at ptd.net (John Jones)
Date: Sun, 3 Sep 2006 20:57:40 -0400
Subject: Python newbie with a problem writing files
Message-ID: <200693205740.885292@JJ-Tosh>

Hi All,

    I have been driven insane by this error. I have this small program, shown below, which runs great until it gets to writing the data out to the file. I am running an install of Python 2.4. Yes, feedparser is functioning fine (I put in print feed_title statements as tests - but have since removed them). I am missing something obvious.

Thanks
JJ 

Code: 

import feedparser
from xml.sax import saxutils

feed_number=200

feed_list = open("feed_listing.conf","r")
for each_feed in feed_list:
    data=feedparser.parse(each_feed)
    feed_title=data.entries[0].title
    xml_output=open("xml_data\\feed" + str(feed_number) + ".xml", "w")
    xml_output.write = (feed_title)
    xml_output.close()
    feed_number+=1

Error Message:

Traceback (most recent call last):
  File "C:/My_Blogroll/JJ_Blogroll2", line 11, in ?
    xml_output.write = (feed_title)
AttributeError: 'file' object attribute 'write' is read-only



From steve.horsley at gmail.com  Mon Sep 11 05:42:05 2006
From: steve.horsley at gmail.com (steve.horsley at gmail.com)
Date: 11 Sep 2006 02:42:05 -0700
Subject: Help with ctypes pointer return values
In-Reply-To: <1hlczru.b2yek21oyv9axN%rhymes@myself.com>
References: <1157728245.559588.95200@m73g2000cwd.googlegroups.com>
	<1hlczru.b2yek21oyv9axN%rhymes@myself.com>
Message-ID: <1157967725.731392.245410@i3g2000cwc.googlegroups.com>


Lawrence Oluyede wrote:

> <cantankerousoldgit at gmail.com> wrote:
> > Does anyone have a good idea how I should define recordList so that I
> > can retrieve the record pointers?
>
> POINTER(POINTER(c_void)) ?
>
> Maybe I misunderstood tough...
>

That's interesting. It had not occurred to me that you could do that.
And I also read that you can index pointers with pointer[x], so I think
that will do the trick.

Thanks for the pointer <groan>. I'll give it a try ASAP.

The Cog.



From duncan.booth at invalid.invalid  Mon Sep 25 08:54:26 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 12:54:26 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8d06$fui$5@lust.ihug.co.nz>
Message-ID: <Xns98498D79318AFduncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

>> Indeed. An escaping function should be small and not do all kinds of
>> escaping for different situations at once.
> 
> Look at it this way: there is _no_ case where you need escaping of
> wildcards without also escaping other specials.

You need to engage brain before posting:

>>> cursor.execute("select * from example"); pprint(cursor.fetchall())
3L
((1L, "o'neil"), (2L, "o'leary"), (3L, 'new\nline'))
>>> cursor.execute("select * from example where name like concat('%%', %s, 
'%%')", "'"); pprint(cursor.fetchall())
2L
((1L, "o'neil"), (2L, "o'leary"))
>>> cursor.execute("select * from example where name like concat('%%', %s, 
'%%')", "\\'"); pprint(cursor.fetchall())
2L
((1L, "o'neil"), (2L, "o'leary"))
>>> cursor.execute("select * from example where name like concat('%%', %s, 
'%%')", "\n"); pprint(cursor.fetchall())
1L
((3L, 'new\nline'),)
>>> cursor.execute("select * from example where name like concat('%%', %s, 
'%%')", "\\n"); pprint(cursor.fetchall())
2L
((1L, "o'neil"), (3L, 'new\nline'))
>>>

The spurious escaping of the apostrophe does no harm, but spuriously 
escaping a newline makes the select match the letter 'n' insteal of 
matching a newline.




From wildemar at freakmail.de  Mon Sep 25 17:31:08 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Mon, 25 Sep 2006 23:31:08 +0200
Subject: ruby %w equivalent
In-Reply-To: <1159217673.536593.210310@d34g2000cwd.googlegroups.com>
References: <mailman.545.1159136157.10491.python-list@python.org>	<91WRg.4780$Go3.2318@dukeread05>	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>	<WVWRg.4782$Go3.723@dukeread05>
	<f0XRg.4783$Go3.4404@dukeread05>
	<1159217673.536593.210310@d34g2000cwd.googlegroups.com>
Message-ID: <45184A9C.8020502@freakmail.de>

MonkeeSage wrote:
> hg wrote:
>> But today ? what is the cost of replacing %w("blah blah") by
>> Hi_I_Want_To_Split_The_String_That_Follows( "blah blah")
> 
> How about r'blah', u'blah', """blah""", and '''blah'''. :)

C'mon, the last two really don't count.

wildemar


From mrmakent at cox.net  Sun Sep  3 23:03:51 2006
From: mrmakent at cox.net (Mike Kent)
Date: 3 Sep 2006 20:03:51 -0700
Subject: Python newbie with a problem writing files
In-Reply-To: <mailman.10321.1157331982.27775.python-list@python.org>
References: <mailman.10321.1157331982.27775.python-list@python.org>
Message-ID: <1157339031.920800.246020@i3g2000cwc.googlegroups.com>


> feed_list = open("feed_listing.conf","r")

What could it be about the above line that means "Open this file for
READ ONLY"?



From bdesth.quelquechose at free.quelquepart.fr  Sat Sep  9 14:24:57 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 09 Sep 2006 20:24:57 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <mailman.163.1157714118.5279.python-list@python.org>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>	<450126b3$0$22554$626a54ce@news.free.fr>
	<mailman.163.1157714118.5279.python-list@python.org>
Message-ID: <450303e3$0$22545$626a54ce@news.free.fr>

Maric Michaud a ?crit :
> Le vendredi 08 septembre 2006 10:15, Bruno Desthuilliers a ?crit :
> 
>>You
>>mentioned NotImplementedError, which is indeed the usual way to make
>>something "abstract" in Python.
> 
> 
> Hummm, some more thoughts about this.
> 
> I can imagine class hierarchies where the presence of not implemented methods 
> doesn't mean that the class is actually an abstract one.

I can imagine this too - as well as I can imagine the nightmarish 
spaghetti code that could use this class hierarchie.

> Even if partial 
> implementation is not a common scheme it can save you from writing a lot of 
> classes.

A partial implementation should return default values, not raise (aka 
NullObjectPattern). Well, IMHO at least.

(snip)

> And this can become a true spider net for more complicated cases. Obviously, 
> in practice we will choose alternatives to inheritance (strategies, 
> visitors, ...)

Composition/delegation...

> to work with such complex situations,

Indeed.


From bvdp at xplornet.com  Fri Sep  8 20:37:02 2006
From: bvdp at xplornet.com (bvdp at xplornet.com)
Date: 8 Sep 2006 17:37:02 -0700
Subject: convert loop to list comprehension
In-Reply-To: <1157760946.227349.99390@m73g2000cwd.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
Message-ID: <1157762222.048058.295340@m79g2000cwm.googlegroups.com>


bearophileHUGS at lycos.com wrote:
> Two possibile solutions:
>
> seq = [2, 3, 1, 9]
>
> print sum( ([i]*n for i,n in enumerate(seq)), [])
>
> print [i for i, x in enumerate(seq) for _ in xrange(x)]
>

Cool as well. So much to learn :)

1. Using an _ is an interesting way to use a throw-away variable. Never
would I think of that ... but, then, I don't do Perl either :)

2. Any reason for xrange() instead of range()

> The second one is probably quite faster.

This seems to be a bit faster than the other suggestion, but is still
quite a bit slower than the original loop. Guess that I'll stick with
the loop for now.

Thanks again!



From skip at pobox.com  Tue Sep  5 15:14:49 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 14:14:49 -0500
Subject: threading
In-Reply-To: <4b490f2f0609051112n150c0141ge4953ebaaffad060@mail.gmail.com>
References: <4b490f2f0609051112n150c0141ge4953ebaaffad060@mail.gmail.com>
Message-ID: <17661.52393.688221.697473@montanaro.dyndns.org>


    matt> From what I understand in order to guarantee thread safety Python
    matt> implements an Global Interpreter Lock. Which removes the
    matt> concurrency, but provides thread safety. Is Python 2.4 still like
    matt> this and if I used Python to handle rpc requests and responses
    matt> would it be efficient in a multithreaded sense.  Always listen
    matt> while another thread sends responses?

Should be no problem.  For all practical purposes the GIL is a problem only
if your code is CPU-bound.

Skip


From cantankerousoldgit at gmail.com  Fri Sep  8 11:10:45 2006
From: cantankerousoldgit at gmail.com (cantankerousoldgit at gmail.com)
Date: 8 Sep 2006 08:10:45 -0700
Subject: Help with ctypes pointer return values
Message-ID: <1157728245.559588.95200@m73g2000cwd.googlegroups.com>

I am trying to call a DLL with a function like this:

    """DESCRIPTION:  Get a list of objects attributes matching
attribute values

    ARGUMENTS:

         session    : [in] the current session

         classId    : [in] the class Id of objects owning attributes to
be returned

         rec        : [in] record initialized with attribute values
used as search parameters (initialized by user)

         nbRecords  : [out] number of returned records

         recordList : [out] list of returned records

         flags      : [in] option flags

    RETURN:  IVAPI_OK if OK

    NOTES:   recordList must be deallocated via IVFreeRecordList.

             If attListSize = 0, all the attributes will be retrieved

    IMPORT int WINAPI IVQueryListByExample (IVSession session, unsigned
long classId, IVRecord rec,  unsigned long* nbRecords, IVRecordList*
recordList, unsigned int flags);"""


It is the recordList variable I am having trouble with. Now, recordList
is a pointer to type IvRecordList, which is itself defined as a void*
in the header file like this:
      typedef void *IVRecordList;
 That makes recordList a type void**. I need to get the pointers out of
the list so I can pass them back to the API when querying the contents
of each record. I am getting nbRecords telling me that the function is
returning the number of records I expect, but I'm not sure how to
define IVRecordList when I pass it in so that I can extract the
pointers properly afterwards.

I've tried this, but the record pointers seem to have a value of None.

  def IVQueryListByExample(session,classId,rec,flags):

      nbRecords = ctypes.c_ulong()

      recordList = ctypes.c_void_p()

      status = ivapidll.IVQueryListByExample(session, classId, rec,
ctypes.byref(nbRecords), ctypes.byref(recordList), flags)


Does anyone have a good idea how I should define recordList so that I
can retrieve the record pointers?



From faulkner612 at comcast.net  Mon Sep 25 20:30:34 2006
From: faulkner612 at comcast.net (faulkner)
Date: 25 Sep 2006 17:30:34 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159230634.180791.318710@m73g2000cwd.googlegroups.com>

both my last summer jobs consisted entirely of python, and the jobs i'm
looking at for next summer all involve python. and one of my profs
makes a living teaching python. and the office i worked for 2 summers
ago was 5 old guys who did nothing but python and stock trade analysis
all day.
if i'm lucky, my career employer after i get out of grad school will
let me play with python and lisp all day everyday.
[so, google, please don't start sucking any time soon.]


walterbyrd wrote:
> If so, I doubt there are many. 
> 
> I wonder why that is?



From fredrik at pythonware.com  Tue Sep 26 10:26:10 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 16:26:10 +0200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be><efaeg4$5oj$2@lust.ihug.co.nz><mailman.629.1159250957.10491.python-list@python.org><efaj9p$fqq$2@lust.ihug.co.nz>
	<efakif$idf$1@lust.ihug.co.nz><mailman.644.1159256238.10491.python-list@python.org><efapp8$rfd$3@lust.ihug.co.nz><mailman.652.1159263385.10491.python-list@python.org><efase7$16m$1@lust.ihug.co.nz><mailman.683.1159279075.10491.python-list@python.org>
	<1159279813.569837.206530@e3g2000cwe.googlegroups.com>
Message-ID: <efbda2$qvb$1@sea.gmane.org>

Frank Millman wrote:

> I am reminded of a spoof Latin motto from the days of my youth -
>
>    NIL ILLEGITIMO CARBORUNDUM

isn't that usually written

    Illegitimi non carborundum

?

or is that just due to differences between british latin and american latin ?

</F> 





From JohnRoth1 at jhrothjr.com  Wed Sep 27 08:58:57 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 27 Sep 2006 05:58:57 -0700
Subject: identifying new not inherited methods
In-Reply-To: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
Message-ID: <1159361937.123100.192330@m7g2000cwm.googlegroups.com>


malkarouri at gmail.com wrote:
> Hi,
>
> I am writing a library in which I need to find the names of methods
> which are implemented in a class, rather than inherited from another
> class. To explain more, and to find if there is another way of doing
> it, here is what I want to do: I am defining two classes, say A and B,
> as:
>
> class A(object):
>     def list_cmds(self):
>         'implementation needed'
>         ?
>     def __init__(self):
>     ... (rest of class)
>
> class B(A):
>     def cmd1(self, args):
>         pass
>     def cmd2(self, args):
>         pass
>
> I need an implementation of list_cmds in A above so that I can get a
> result:
>
> >>> b=B()
> >>> b.list_cmds()
> ['cmd1','cmd2']                    #order not important
>
> I will be happy if anybody can point to me any way of doing it, using
> class attributes, metaclasses or otherwise. What I don't want to do is
> modifying class B, which contains just the cmds, if possible.
>
> Many thanks in advance.
>
> k

When I want to do this, I scan the __dict__
attribute of the class. If all you care about is
instance methods (which is all I care about
at the moment), they're just ordinary functions.
Do an isinstance and you've got it.

If you want to dig deeper and look at class
methods, static methods, descriptors and
other stuff, it's a bit more complicated, but
not much.

John Roth
Python FIT



From lycka at carmen.se  Mon Sep 11 04:25:44 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 11 Sep 2006 10:25:44 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157932363.904338.181180@p79g2000cwp.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
	<1157752108.456624.146270@i3g2000cwc.googlegroups.com>
	<gcsMg.9006$bM.550@newsread4.news.pas.earthlink.net>
	<z9ZMg.9635$bM.7954@newsread4.news.pas.earthlink.net>
	<1157932363.904338.181180@p79g2000cwp.googlegroups.com>
Message-ID: <45051D88.2040809@carmen.se>

mensanator at aol.com wrote:
> I think an explanation of how Sqlite3 differs from SQL and
> a better set of examples is still warranted.

In general, Python standard library modules that are wrappers
for third party libraries are very thinly documented, and they
should probably remain that way, because it's really too much of
a burden on the Python developers to develop this documentation
and keep it up to date. The idea is to document the wrapper, not
the wrapped library.

If I had a choice concerning these wrapper libraries, I'd much
rather see more docs on the tkinter and xml libraries. There you
need to guess a lot. There is no shortage of Tcl/Tk docs, but it
doesn't look the same within Python. For the Python xml libraries,
I've had to experiment a lot, and I have this nagging feeling
that I don't do things the way I should. (From Python 2.5, we
have ElementTree, which is much better from this perspective,
but we've just started using 2.4 at work, and we try to keep
the amount of third party libraries to a minimum here.)

It seems to me that the sqlite3 module is fairly decent in
this regard, particularly since it's not even included in a
completed Python release yet. Concerning the API, I'm surprised
to see magic method naming such as __conform__ introduced in
a library like that. It seems to me that this is a violation
of PEP 8. I'm sure there are further details that could be worth
mentioning in the docs, but I think it's important that we don't
try to duplicate the SQLite docs in the Python docs.


From rupole at hotmail.com  Sat Sep 30 14:23:20 2006
From: rupole at hotmail.com (Roger Upole)
Date: Sat, 30 Sep 2006 14:23:20 -0400
Subject: DAT file compilation
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>	<4o5qhvFd1bddU1@uni-berlin.de>	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>	<1159576888.862008.286980@m73g2000cwd.googlegroups.com>
	<1159635366_33@sp6iad.superfeed.net>
	<mailman.1007.1159638448.10491.python-list@python.org>
Message-ID: <1159640819_1097@sp6iad.superfeed.net>


"Steve Holden" <steve at holdenweb.com> wrote in message news:mailman.1007.1159638448.10491.python-list at python.org...
> Roger Upole wrote:
>> On Windows NTFS file systems, you can add data to a file using named streams.
>> The extra streams aren't visible from Explorer so the average end-user won't
>> even know they're there.
>>
> I hadn't realised how easy it is to access alternate data streams from Python. A filename of the right form 
> ("basefile.ext:alternatename") works just fine, it appears.
>
> Unfortunately you then have the problem of how to create it, since there is no way to carry it around outside an NTFS 
> filesystem, so some sort of post-install script would be required.
>
> There's also the issue that alternate data stream of any significant size will be regarded with great suspicion by forensic 
> examinations and similar tests.
>
> regards
>  Steve
> -- 

Another drawback is that you have to be careful how you move the files
around.  shutil.copyfile doesn't pick up alternate streams.  Also, there's
no way from stock python to enumerate the streams. (but that could be a
plus for the OP)

      Roger




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
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From michele.simionato at gmail.com  Fri Sep  8 11:45:13 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 8 Sep 2006 08:45:13 -0700
Subject: Javadoc style python manual?
In-Reply-To: <1157728519.331486.198060@m79g2000cwm.googlegroups.com>
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
	<1157726433.091404.124130@d34g2000cwd.googlegroups.com>
	<1157728519.331486.198060@m79g2000cwm.googlegroups.com>
Message-ID: <1157730313.617790.65650@m79g2000cwm.googlegroups.com>


Ben Sizer wrote:
> Michele Simionato wrote:
> > Ben Sizer wrote:
> > > I agree that the Python docs aren't quite as effective as reference
> > > material due to the lack of simple function and method lists though.
> >
> > http://docs.python.org/lib/modindex.html, pydoc and ipython are more
> > than enough for me.
>
> modindex is comprehensive but too 'flat'. Sometimes you want to see all
> of one object's methods and properties listed together.
>
> I was unaware of pydoc until this thread; its existence seems to be
> buried, somewhat. Looking at pydoc.org (assuming that is a good example
> of it in use), it looks more like what the original poster and I might
> want, but sadly it's still very inconsistent, with many things
> undescribed.
>
> --
> Ben Sizer

Don't miss IPython, too.

$ ipython
Python 2.4.1 (#2, Aug 25 2005, 18:20:57)
Type "copyright", "credits" or "license" for more information.

IPython 0.6.15 -- An enhanced Interactive Python.
?       -> Introduction to IPython's features.
%magic  -> Information about IPython's 'magic' % functions.
help    -> Python's own help system.
object? -> Details about 'object'. ?object also works, ?? prints more.

In [1]: import email.FeedParser

In [2]: email.FeedParser.FeedParser?
Type:           classobj
String Form:    email.FeedParser.FeedParser
Namespace:      Interactive
File:           /usr/lib/python2.4/email/FeedParser.py
Docstring:
    A feed-style parser of email.

Constructor information:
Definition:     email.FeedParser.FeedParser(self, _factory=<class
email.Message.Message at 0xb77f5ddc>)
Docstring:
    _factory is called with no arguments to create a new message obj


In [3]: help(email.FeedParser.FeedParser)
Help on class FeedParser in module email.FeedParser:

class FeedParser
 |  A feed-style parser of email.
 |
 |  Methods defined here:
 |
 |  __init__(self, _factory=<class email.Message.Message>)
 |      _factory is called with no arguments to create a new message
obj
 |
 |  close(self)
 |      Parse all remaining data and return the root message object.
 |
 |  feed(self, data)
 |      Push more data into the parser.


In [4]: email.FeedParser.FeedParser??
Type:           classobj
String Form:    email.FeedParser.FeedParser
Namespace:      Interactive
File:           /usr/lib/python2.4/email/FeedParser.py
Source:
class FeedParser:
    """A feed-style parser of email."""

    def __init__(self, _factory=Message.Message):
        """_factory is called with no arguments to create a new message
obj"""
        self._factory = _factory
        self._input = BufferedSubFile()
        self._msgstack = []
        self._parse = self._parsegen().next
        self._cur = None
         ...

Unfortunately, the nice colors of IPython are lost in the post :-(

                      Michele Simionato



From MonkeeSage at gmail.com  Sat Sep 30 03:48:27 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 00:48:27 -0700
Subject: Hot new programming languages - according to the TIOBE index
References: <1159543075.244454.186650@h48g2000cwc.googlegroups.com>
Message-ID: <1159602507.757469.15760@k70g2000cwa.googlegroups.com>

vasudevram wrote:
> Ruby and Python are doing well, according to the latest TIOBE index.

Doing well?? Ruby is up 14 points, relatively...ghea! ruby p0wns!11 ;)

D is an interesting language, though, I must say. Looks like they did
all the things right that C++ did wrong.

Regards,
Jordan



From brenNOSPAMbarn at NObrenSPAMbarn.net  Wed Sep 27 00:04:02 2006
From: brenNOSPAMbarn at NObrenSPAMbarn.net (OKB (not okblacke))
Date: Wed, 27 Sep 2006 04:04:02 GMT
Subject: does anybody earn a living programming in python?
References: <mailman.728.1159298399.10491.python-list@python.org>
Message-ID: <Xns984AD64A14848OKB@199.45.49.11>

wesley chun wrote:

> since 1997, i've been pretty much working full-time in Python:
> - at yahoo, we developed yahoo!mail in python (and some C++)
> - at synarc, i wrote software for doctors in python (and some C)
> - at ironport, most everything is in python (and some C, PyRex). we
> have a million lines in python (http://www.python.org/about/quotes/)

    	This is interesting to me in that all these jobs also involve C.  
I'm not the original poster, but I'd be interested to hear about people 
who make a living programming Python WITHOUT knowing C.  I suppose this 
may be considered insane, but, well you said it best yourself:

> char **x =
> (char**)malloc(...)... *x++ = (char*)malloc(...) ... free()...
> free()... (segmentation fault)... bus error... gdb... blah blah, led
> to thoughts such as, "i have better things to do with my time,"

-- 
--OKB (not okblacke)
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is
no path, and leave a trail."
	--author unknown


From mensanator at aol.com  Mon Sep  4 21:15:42 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 4 Sep 2006 18:15:42 -0700
Subject: Is it just me, or is Sqlite3 goofy?
Message-ID: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>

Probably just me. I've only been using Access and SQL Server
for 12 years, so I'm sure my opinions don't count for anything.

I was, nevertheless, looking forward to Sqlite3. And now
that gmpy has been upgraded, I can go ahead and install
Python 2.5.

So I open the manual to Section 13.13 where I find the first
example of how to use Sqlite3:

<code>
conn = sqlite3.connect(':memory:')

c = conn.cursor()

# Create table
c.execute('''create table stocks
(date timestamp, trans varchar, symbol varchar,
 qty decimal, price decimal)''')

# Insert a row of data
c.execute("""insert into stocks
          values ('2006-01-05','BUY','RHAT',100,35.14)""")
</code>

Seems pretty simple, yet I was befuddled and bewildered
by this example. So much so that I added a query to see exactly
what was going on.

<code>
# added by me
c.execute('select * from stocks')
d = c.fetchone()
for t in  d:
    print type(t),t
</code>

Original code - what's wrong with this picture?
    <type 'unicode'> 2006-01-05
    <type 'unicode'> BUY
    <type 'unicode'> RHAT
    <type 'int'> 100
    <type 'float'> 35.14

Why is the date returning as a string? Aren't the built in
converters supposed to handle that? Yes, if you enable
detect_types.

Added detect_types=sqlite3.PARSE_DECLTYPES

Traceback (most recent call last):
  File "C:\Python25\sqlite_first_example.py", line 30, in <module>
    c.execute('select * from stocks')
  File "C:\Python25\lib\sqlite3\dbapi2.py", line 66, in
convert_timestamp
    datepart, timepart = val.split(" ")
ValueError: need more than 1 value to unpack

Aha, that explains why they weren't enabled.

This failed because
 - the value inserted was wrong format?
 - and the builtin converter can't split it cuz it has no spaces?
when it worked it was because
 - detect_types was not set, so converter not invoked when queried?

Yes, the format in the example was datetime.date and the field type
should have been cast [date], not [timestamp] which needs HH:MM:SS
for the converter to work properly (but only if detect_types
enabled).

If a correct format was inserted, converter would have worked

  <type 'datetime.datetime'> 2006-09-04 13:30:00
  <type 'unicode'> BUY
  <type 'unicode'> RHAT
  <type 'int'> 100
  <type 'float'> 35.14

Or, had the field been properly cast as [date] instead of [timestamp]
it would also have worked.

  <type 'datetime.date'> 2006-09-04
  <type 'unicode'> BUY
  <type 'unicode'> RHAT
  <type 'int'> 100
  <type 'float'> 35.14

Ah, this now partly explains the original result, since detect_types
is off by default, the field cast, not being a native sqlite3 type
was ignored and the data queried back as TEXT.

  <type 'unicode'> 2006-09-04
  <type 'unicode'> BUY
  <type 'unicode'> RHAT
  <type 'int'> 100
  <type 'float'> 35.14

Ok, next issue, what the fuck are [varchar] and [decimal]?
They are certainly not Sqlite3 native types. If they are
user defined types, where are the converters and adapters?
Does Sqlite3 simply ignore a cast that isn't registered?

Note that although both qty and price were cast as [decimal]
they queried back as int and float.

Note also that it's "obvious" from the query example on page 13.13
that the example is FUBAR
 - the date is a unicode string, not a datetime.date type
 - the price is binary floating point, not decimal

<quote>
    This example uses the iterator form:
    >>> c = conn.cursor()
    >>> c.execute('select * from stocks order by price')
    >>> for row in c:
    ...    print row
    ...
    (u'2006-01-05', u'BUY', u'RHAT', 100, 35.140000000000001)
    (u'2006-03-28', u'BUY', u'IBM', 1000, 45.0)
    (u'2006-04-06', u'SELL', u'IBM', 500, 53.0)
    (u'2006-04-05', u'BUY', u'MSOFT', 1000, 72.0)
</quote>

Here we have an example of things apparently working
for the wrong reason. A classic example of the programmer
who *thinks* he knows how it works because he wrote it.
This kind of sloppiness wouldn't last 5 minutes in a production
environment.

But why did Sqlite3 make qty an int and price a float?
Hard to say since THE FURTHER EXAMPLES IN THE DOCS don't
even bother to cast the field types. I guess I'm supposed
to guess how things are supposed to work. Can I trust that
default settings will be what I want?

Ha! Can I trust the baby with a hammer?

First, note that the script example in section 13.13.3

<quote>
import sqlite3

con = sqlite3.connect(":memory:")
cur = con.cursor()
cur.executescript("""
    create table person(
        firstname,
        lastname,
        age
    );

     create table book(
        title,
        author,
        published
    );

    insert into book(title, author, published)
    values (
        'Dirk Gently''s Holistic Detective Agency
        'Douglas Adams',
        1987
    );
    """)
</quote>

contains not one but TWO syntax errors! A single quote after
the word Agency is missing as is the comma that should be at
the end of that line. Seems that no one actually ever tried
this example.

That's easily fixed. But I was curious about why the fields
don't have type casts. After the previous debacle and
knowing that this code was never tested, I am not going to
assume it works. Better add a query to make sure.

cur.execute("select title, author, published from book")
d = cur.fetchall()
for i in d: print i
print

(u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', 1987)

Ok, so if not cast, the fields must default (and probably also when
a cast is made that hasn't been defined).

But watch this: being clueless (but not stupid) is a gift I have
for troubleshooting. I tried (incorrectly) to insert another record:

cur.execute("insert into book(title, author, published) values ('Dirk
Gently''s Holistic Detective Agency','Douglas Adams','1987')")

(u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', 1987)
(u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', u'1987')

Uhh...how can a database have a different field type for each record?

Simple, without a cast when the table is created, the field type is
whatever you insert into it. That's how the default must work,
each record has a data structure independent of every other record!

Wow. Just think of the kind of bugs *that* must cause.

Bugs?

Here's MY example, creating a Cartesian Product

<code>
import sqlite3
letters = [(2,),('10',),('20',),(200,)]
con = sqlite3.connect(":memory:")
con.text_factory = str
con.execute("create table letter(c integer)")
con.executemany("insert into letter(c) values (?)", letters)
print 'Queried: ',
for row in con.execute("select c from letter"):
    print row,
print
print
print 'Sorted: ',
for row in con.execute("select c from letter order by c"):
    print row[0],
print
print
print 'Cartesian Product: ',
for row in con.execute("select a.c, b.c, c.c from letter as a, letter
as b, letter as c"):
    print row[0]+row[1]+row[2],
</code>

Note that the list of data to be inserted contains both strings and
ints. But because the field was correctly cast as [integer], Sqlite3
actually stored integers in the db. We can tell that from how the
"order by" returned the records.

Queried:  (2,) (10,) (20,) (200,)

Sorted:  2 10 20 200

Cartesian Product:  6 14 24 204 14 22 32 212 24 32 42 222 204 212
222 402 14 22 32 212 22 30 40 220 32 40 50 230 212 220 230 410 24
32 42 222 32 40 50 230 42 50 60 240 222 230 240 420 204 212 222
402 212 220 230 410 222 230 240 420 402 410 420 600

Because if I cast them as [text] the sort order changes (and my
Cartesian Product becomes concatenation instead of summation).

Queried:  ('2',) ('10',) ('20',) ('200',)

Sorted:  10 2 20 200

Cartesian Product:  222 2210 2220 22200 2102 21010 21020 210200
2202 22010 22020 220200 22002 220010 220020 2200200 1022 10210
10220 102200 10102 101010 101020 1010200 10202 102010 102020
1020200 102002 1020010 1020020 10200200 2022 20210 20220 202200
20102 201010 201020 2010200 20202 202010 202020 2020200 202002
2020010 2020020 20200200 20022 200210 200220 2002200 200102
2001010 2001020 20010200 200202 2002010 2002020 20020200 2002002
20020010 20020020 200200200

But if I omit the cast altogether, then the db stores the input
exactly as it was inserted, so the c field contains both
text and integers wreaking havoc with my sort order, making
records un-queryable using "where" and causing my Cartesian
Product to crash.

Queried:  (2,) ('10',) ('20',) (200,)

Sorted:  2 200 10 20

Cartesian Product:  6

Traceback (most recent call last):
  File "C:\Python25\user\sqlite_test2.py", line 225, in <module>
    print row[0]+row[1]+row[2],
TypeError: unsupported operand type(s) for +: 'int' and 'str'

Yeah, I know, I've heard it before.

"This behavior is by design."

It's still fuckin' goofy.



From manstey at csu.edu.au  Thu Sep 21 01:21:45 2006
From: manstey at csu.edu.au (manstey)
Date: 20 Sep 2006 22:21:45 -0700
Subject: naming objects from string
In-Reply-To: <mailman.372.1158814064.10491.python-list@python.org>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<mailman.372.1158814064.10491.python-list@python.org>
Message-ID: <1158816105.593369.176280@i42g2000cwa.googlegroups.com>

Hi,

thanks for the suggestions. this is my problem:

I have a metadata file that another user defines, and I don't know
their structure in advance. They might have 300+ structures. the
metadata defines the name and the tuple-like structure when read by
python.

my program reads in the metadata file and then generates python tuples
corresponding to their structures.

so they might provide a list of names, like 'bob','john','pete', with 3
structures per name, such as 'apple','orange','red' and I need 9 tuples
in my code to store their data:

bob_apple=()
bob_orange=()
..
pete_red=()

I then populate the 9 tuples with data they provide in a separate file,
and the filled tuples are then validated against the metadata to make
sure they are isomorphic.

Is this clear?

thanks



From jjl at pobox.com  Thu Sep  7 18:46:12 2006
From: jjl at pobox.com (John J. Lee)
Date: Thu, 07 Sep 2006 22:46:12 GMT
Subject: Add NTLM proxy authentication to urllib2
References: <1157442556.636114.294400@i3g2000cwc.googlegroups.com>
	<edkijp$2la$1@nemesis.news.tpi.pl>
Message-ID: <87k64fmh1n.fsf@pobox.com>

Jarek Zgoda <jzgoda at o2.usun.pl> writes:

> looping napisa?(a):
> 
> > I have to make internet connections through an ISA proxy server that
> > use NTLM or Kerberos authorization method.
> > I've found a program in python called ntlmaps that act like a proxy and
> > could make the NTLM authentication, but you have to run it and make all
> > your connection through it, not an optimal solution.
> > So what I really need is an enhanced urllib2 that support NTLM or
> > Kerberos.
> > I've found that pywin32 could manage NTLM encryption with the sspi
> > module but I've no idea how to implement it in urllib2, NTLM
> > authentication use a 'Token dance' between client and server.
> > 
> > Anyone has an experience, a demo or an idea to share ?
> 
> Look at NTLM APS (http://ntlmaps.sourceforge.net/), Dimitry did this
> already (although not in urllib).

I *think* I remember somebody did implement NTLM for urllib2.  Keep
googling^W employing popular internet free-text search facilities.

But probably a proxy server like the one Jarek mentions is a much more
practical way to go.


John


From grflanagan at yahoo.co.uk  Sat Sep 23 14:04:50 2006
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: 23 Sep 2006 11:04:50 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
Message-ID: <1159034690.382602.256590@m7g2000cwm.googlegroups.com>


volcano wrote:
> Hello, folks!
> A trivial question - I have a working Python script that I have to
> invoke from C++ code. No fancy stuff - just run the whole script with
> its parameters. No callbacks, no signalling - nada, just
> stupid,primitive, straightforward call.
>
> And while there is a lot of help on embedding, I could not find out how
> to run script as a whole.SOS!!!!

In C#:

http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=st&q=&rnum=4#197b6a89095ef930

hth

Gerard



From tim at tdw.net  Thu Sep  7 20:02:54 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 8 Sep 2006 01:02:54 +0100
Subject: Extracting text from a string
In-Reply-To: <B51771647.363.8455.1@mx-extra>
References: <R51762242.230.8556.1@mx-extra> <B51771647.363.8455.1@mx-extra>
Message-ID: <9afea2ac0609071702v33ff77b5t529373f7a0bdc96c@mail.gmail.com>

On 08/09/06, Tim Williams <tim at tdw.net> wrote:

> >>> print '\n'.join([i for i in s.splitlines() if i[0] == '$'])
> $14.99
> $27.99
> $66.99
> $129.99
> $254.99
>

or even more terse,

>>> print '\n'.join([i for i in s.splitlines ()[1::2]])
$14.99
$27.99
$66.99
$129.99
$254.99


From sybrenUSE at YOURthirdtower.com.imagination  Sat Sep 30 03:45:52 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sat, 30 Sep 2006 09:45:52 +0200
Subject: Python/UNO/OpenOffice?
References: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
Message-ID: <slrnehs85g.ncj.sybrenUSE@schuimige.stuvel.eu>

kenneth.m.mcdonald at sbcglobal.net enlightened us with:
> Are then any currently active and reasonably mature Python plugins/
> apis/whatever for programming/scripting OpenOffice? The page I've
> found is http://udk.openoffice.org/python/python-bridge.html, but it
> was last updated more than a year ago.

Aside from what has already been said, it might be nice for you to
read my article about OOo and Python at
http://www.stuvel.eu/ooo-python ;-)

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From rNOSPAMon at flownet.com  Mon Sep 11 14:34:02 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Mon, 11 Sep 2006 11:34:02 -0700
Subject: BaseHTTPServer weirdness
Message-ID: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>

I'm trying to figure out how to use BaseHTTPServer.  Here's my little 
test app:

=================================

#!/usr/bin/python

from BaseHTTPServer import *

import cgi

class myHandler(BaseHTTPRequestHandler):

  def do_GET(r):
    s = ''
    try:
      s = cgi.parse_qs(r.rfile.read(int(r.headers.get 
("Content-length"))), 1)
    except:
      pass

    r.send_response(200)
    r.send_header("Content-type", "text/html")
    r.end_headers()
    r.wfile.write("""
    <form method=post action=foo>
    <input type=text name=text1 value="">
    <input type=text name=text2 value="">
    <input type=submit>
    </form> %s
    """ % s)

  def do_POST(r):
    r.do_GET()


d = HTTPServer(('', 1024), myHandler)
d.serve_forever()

===================================

Two questions:

1.  The line:

s = cgi.parse_qs(r.rfile.read(int(r.headers.get("Content-length"))), 1)

feels like a horrible hack.  It seems like this would be a better 
alternative:

s = cgi.parse(r.rfile)

but that doesn't actually work.  Why?  What is the Right Way to parse 
form data in a BaseHTTPServer?

2.  Despite the fact that I'm passing a 1 for the keep_blank_values 
argument to cgi.parse_qs, it doesn't actually keep blank values.  Is 
this a bug, or am I doing something wrong?

Thanks,
rg


From antroy at gmail.com  Fri Sep 22 08:33:07 2006
From: antroy at gmail.com (Ant)
Date: 22 Sep 2006 05:33:07 -0700
Subject: I need some help with a regexp please
In-Reply-To: <1158916948.684404.165830@d34g2000cwd.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<1158913821.697360.82730@i42g2000cwa.googlegroups.com>
	<1158916948.684404.165830@d34g2000cwd.googlegroups.com>
Message-ID: <1158928387.884302.51560@h48g2000cwc.googlegroups.com>


John Machin wrote:
> Ant wrote:
> > John Machin wrote:
> > ...
> > > A little more is unfortunately not enough. The best advice you got was
> > > to use an existing e-mail address validator.
> >
> > We got bitten by this at the last place I worked - we were using a
> > regex email validator (from Microsoft IIRC)
...
> Oh, sorry for the abbreviation. "use" implies "source from believedly
> reliable s/w source; test; then deploy" :-)

I actually meant that we got bitten by using a regex validator, not by
using an existing one. Though we did get bitten by an existing one, and
it being from Microsoft we should have known better ;-)



From jjl at pobox.com  Sat Sep 16 20:26:04 2006
From: jjl at pobox.com (John J. Lee)
Date: Sun, 17 Sep 2006 00:26:04 GMT
Subject: Mechanoid Web Browser - Recording Capability
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
Message-ID: <878xkjxrs2.fsf@pobox.com>

"Seymour" <seymour.morris at gmail.com> writes:

> I am trying to find a way to sign onto my Wall Street Journal account
> (http://online.wsj.com/public/us) and automatically download various
> financial pages on stocks and mutual funds that I am interested in
> tracking.  I have a subscription to this site and am trying to figure
> out how to use python, which I have been trying to learn for the past
> year, to automatically login and capture a few different pages.
[...]

Just to add: It's quite possible that site has an "no scraping"
condition in their terms of use.  It seems standard legal boilerplate
on commercial sites these days.  Not a good thing on the whole, I tend
to think, but you should be aware of it.


John


From harbingerofpeace at post.com  Sun Sep 24 12:26:53 2006
From: harbingerofpeace at post.com (Pete)
Date: 24 Sep 2006 09:26:53 -0700
Subject: What is the best way to "get" a web page?
In-Reply-To: <1159072858.576765.9020@k70g2000cwa.googlegroups.com>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<92nRg.4760$nX4.2074@tornado.texas.rr.com>
	<1159069783.563618.80380@k70g2000cwa.googlegroups.com>
	<1159072858.576765.9020@k70g2000cwa.googlegroups.com>
Message-ID: <1159115212.945175.245670@b28g2000cwb.googlegroups.com>

> > The file "temp.html" is definitely different than the first run, but
> > still not anything close to www.python.org . Any other suggestions?
>
> If you mean that the page looks different in a browser, for one thing
> you have to download the css files too. Here's the relevant extract
> from the main page:
>
> <link media="screen" href="styles/screen-switcher-default.css"
> type="text/css" id="screen-switcher-stylesheet" rel="stylesheet" />
> <link media="scReen" href="styles/netscape4.css" type="text/css"
> rel="stylesheet" />
> <link media="print" href="styles/print.css" type="text/css"
> rel="stylesheet" />
> <link media="screen" href="styles/largestyles.css" type="text/css"
> rel="alternate stylesheet" title="large text" />
> <link media="screen" href="styles/defaultfonts.css" type="text/css"
> rel="alternate stylesheet" title="default fonts" />
>
> You may either hardcode the urls of the css files, or parse the page,
> extract the css links and normalize them to absolute urls. The first is
> simpler but the second is more robust, in case a new css is added or an
> existing one is renamed or removed.
>
> George

Thanks for the information on CSS. I'll look into that later, but now
my question is on the first two lines of HTML code. Here's my latest
python code:

>>> import urllib
>>> web_page = urllib.urlopen("http://www.python.org")
>>> fileTemp = open("temp.html", "w")
>>> web_page_contents = web_page.read()
>>> fileTemp.write(web_page_contents)
>>> fileTemp.close()

Here are the first two lines of temp.html:

      1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/x        html1/DTD/xhtml1-transitional.dtd">
      2 <html lang="en" xml:lang="en"
xmlns="http://www.w3.org/1999/xhtml">

Here are the first two lines of www.python.org as saved from Firefox:

      1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/x        html1/DTD/xhtml1-transitional.dtd">
      2 <html xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"
lang="en"><head>

Lines one are identical. Lines two are different. Why would lines two
differ? Hmmmm...

Thanks,
Pete



From steve at holdenweb.com  Tue Sep 26 11:35:47 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 11:35:47 -0400
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <1159281764.100207.285590@i42g2000cwa.googlegroups.com>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efakif$idf$1@lust.ihug.co.nz>	<1159279813.569837.206530@e3g2000cwe.googlegroups.com>	<mailman.688.1159281249.10491.python-list@python.org>
	<1159281764.100207.285590@i42g2000cwa.googlegroups.com>
Message-ID: <efbhb1$b5u$1@sea.gmane.org>

Frank Millman wrote:
> Fredrik Lundh wrote:
> 
>>Frank Millman wrote:
>>
>>
>>>I am reminded of a spoof Latin motto from the days of my youth -
>>>
>>>   NIL ILLEGITIMO CARBORUNDUM
>>
>>isn't that usually written
>>
>>    Illegitimi non carborundum
>>
>>?
>>
>>or is that just due to differences between british latin and american latin ?
>>
>></F>
> 
> 
> or my bad memory - my youth was a long time ago :-)
> 
You were lucky, you *had* a youth [... etc.]

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Mon Sep 25 10:00:35 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 16:00:35 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
Message-ID: <ef8ne4$vs1$1@sea.gmane.org>

Jon Ribbens wrote:

> There's nothing to say that cgi.escape should take them both into account
> in the one function

so what exactly are you using cgi.escape for in your code ?

> What precisely do you think it would "break"?

existing code, and existing tests.

</F> 





From mikeowens at gmail.com  Mon Sep 11 19:45:33 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Mon, 11 Sep 2006 18:45:33 -0500
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>
Message-ID: <df2316bd0609111645r15f1087l12b42b6e65ef22ea@mail.gmail.com>

On 9/11/06, Marty <stupidityreigns at gmail.com> wrote:

> In all seriousness, the information you present here is great, and
> much appreciated. Your sarcastic, condescending tone kind of gets in
> the way of the message, though.

Sarcastic, perhaps. Condesceding, I think not. It is ridiculous that
people can simply say whatever they want to about software they've
taken little time to learn. I did not see one single post by
mensanator to the SQLite mailing list, or by anyone else on this
thread who criticized SQLite. Rather, it was SQLite is just crappy, or
not a database, or not an SQL database, or other expletives. And while
mensanator had other claims about Python's documentation, this general
frustration then carelessly took a turn to SQLite.

And as for the alleged problems in SQLite, there was (to my
estimation) much less effort expended in finding a solution than there
was in badmouthing an otherwise wonderful piece of software.

If you are too impatient to read the documentation, fine. If you don't
want to consult the experienced people on the SQLite mailing list (who
are glad to help), fine. But DON'T remain willfully ignorant AND blame
SQLite for not working the way your intuition demands. For years I've
watched people badmouth SQLite whose claims are uninformed, unfounded,
or downright unfair. Had a single accuser here posted this alleged
problem with SQLite to the SQLite mailing list, I probably would have
remained silent here (and answered it more politely there).

> And here is the crux of the issue. Sqlite doesn't follow the standard
> for sql. The name certainly implies that it would. This doesn't make
> it a crappy product, but it is certainly misleading.

Newsflash: No database follows the complete SQL standard, not even
Oracle. By the logic in this thread, there is no such thing as an SQL
database.

> I must admit, that after 10 years of oracle experience, I don't necessarily read all
> of the documentation for a new dbms I'm trying out, particularly a
> light weigth variety. I get in, and try things. Sometimes I get
> bitten, but I learn better that way.

I would hope then that when you don't read the documentation, and you
get bitten, you know better than to blame the software.

> I would expect, however, for each
> product with 'sql' in the name, to, at least by default, adhere to the
> standard. And expectations are what set this conversation up.

These expectations are simply unrealistic. If someone is simply too
lazy to read the documentation or use the mailing list, then they can
only blame themselves. And if you say SQLite misrepresents itself,
then what do you say about MySQL, which until version 5 didn't have
views or triggers? In fact, it didn't even have subselects until
version 4. For a period of years, SQLite had more mainstream SQL
features than MySQL. Yet you don't see people going around claiming
that MySQL is not an SQL database -- that it's misrepresenting itself.

So no, SQLite most certainly does not misrepresent itself. It is an
open source, embedded, relational database that uses SQL as its query
language. Plain and simple. Just because it may not implement part of
the standard you or someone else likes does not strip it being an SQL
database.

> But, I don't expect that anything productive will come from the rest
> of this thread. Your post had the stink of zealotry all over it, and
> we all know what happens when a zealots favorite is questioned.

Expecting people to get the facts before badmouthing something is
hardly zealotry. I am tired of seeing SQLite taking the blame when
certain people choose simply to assume rather than read (or consult
others). They see database-level locking, they ASSUME it's too slow
for any kind of write concurrency applications. They see type
affinity, they ASSUME it's just substandard or useless, and then by
further soritical leaps, discount it as even an SQL database? Rather
than reading, or testing, or asking people who know, they get
frustrated and go straight to blaming it. That is completely unfair.

The purpose of this post is to demonstrate that:

1. SQLite was not at fault here, nor insufficient for the purpose stated.

2. There are people who can easily provide the very help you need,
provided you ask them, and try to keep your derogatory comments to a
minimum.

3. There is no substitute for reading the documentation and learning
the product. This is doubly true of relational databases. I'd love to
see someone who uses MSSQL or Oracle try to install and use PostgreSQL
or Firebird with nothing but instinct. I currently use three of these
databases in production, and I couldn't survive without reading
documentation.

> Again, thanks for the info. It'll serve me well when I'm playing with
> sqlite later.

You are more than welcome. Glad to help.


From steve at holdenweb.com  Sun Sep 24 16:24:48 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 24 Sep 2006 16:24:48 -0400
Subject: QuoteSQL
In-Reply-To: <ef5m1h$h1k$4@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
Message-ID: <ef6ph1$ndo$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <slrneha9ng.k6.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
> wrote:
> 
> 
>>Lawrence D'Oliveiro enlightened us with:
>>
>>>Why doesn't MySQLdb provide a function like this:
>>
>>Because generally you're able to pass newlines and the like just fine.
>>You can even store binary data into a BLOB column.
> 
> 
> Yes, I have done blobs. Still need a quoting function for the specials,
> though.

No, actually you need to use the DB API as it was intended to be used.

You think Booleans' invert behaviour is strange, you think that 
cgi.escape is broken, and you think Python needs a SQLquote function.

It might be a good idea to lurk for a bit longer and get more idea of 
how Python is used in practice before starting to suggest spurious 
improvements.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bretthoerner at gmail.com  Tue Sep 26 22:58:29 2006
From: bretthoerner at gmail.com (Brett Hoerner)
Date: 26 Sep 2006 19:58:29 -0700
Subject: preserving color ouput of a shell command via os.popen()
In-Reply-To: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>
References: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>
Message-ID: <1159325909.557008.107040@k70g2000cwa.googlegroups.com>

zeezlo at yahoo.com wrote:
> child = os.popen("ls --color=auto")
> output = child.read()
>
> results in an output string which is free of the escape sequences
> generated by ls.

Don't use --color=auto,  from the 'ls' man page:

With --color=auto,  color codes are output only if standard output is
connected to a terminal (tty).

'ls' doesn't think Python is a color terminal, so just use "--color",
ie:

>>> import os
>>> a = os.popen("ls --color /")
>>> f = a.read()
>>> f
'\x1b[00m\x1b[00;34mbin\x1b[00m\n\x1b[00;34mboot\x1b[00m\n\x1b[00;34mdev\x1b[00m\n\x1b[00;34metc\x1b[00m\n\x1b[00;34mhome\x1b[00m\n\x1b[00;34mlib\x1b[00m\n\x1b[00;34mlost+found\x1b[00m\n\x1b[00;34mmedia\x1b[00m\n\x1b[00;34mmisc\x1b[00m\n\x1b[00;34mmnt\x1b[00m\n\x1b[00;34mnet\x1b[00m\n\x1b[00;34mopt\x1b[00m\n\x1b[00;34mproc\x1b[00m\n\x1b[00;34mroot\x1b[00m\n\x1b[00;34msbin\x1b[00m\n\x1b[00;34mselinux\x1b[00m\n\x1b[00;34msrv\x1b[00m\n\x1b[00;34msys\x1b[00m\n\x1b[00;34mtmp\x1b[00m\n\x1b[00;34musr\x1b[00m\n\x1b[00;34mvar\x1b[00m\n\x1b[m'
>>> a = os.popen("ls --color=auto /")
>>> f = a.read()
>>> f
'bin\nboot\ndev\netc\nhome\nlib\nlost+found\nmedia\nmisc\nmnt\nnet\nopt\nproc\nroot\nsbin\nselinux\nsrv\nsys\ntmp\nusr\nvar\n'
>>>

See the difference? :)

Brett Hoerner



From friedmud at gmail.com  Fri Sep 22 11:29:14 2006
From: friedmud at gmail.com (friedmud at gmail.com)
Date: 22 Sep 2006 08:29:14 -0700
Subject: Anyone use PyPar (Python MPI implementation) recently?
In-Reply-To: <1158938010.649920.54510@e3g2000cwe.googlegroups.com>
References: <1158938010.649920.54510@e3g2000cwe.googlegroups.com>
Message-ID: <1158938954.055230.148620@e3g2000cwe.googlegroups.com>

Nevermind... I'm an idiot... just didn't specify the right options...

python setup.py  install --prefix=$MY_PREFIX

Works just fine... sigh.

Friedmud



From tenax.raccoon at gmail.com  Wed Sep 13 16:41:37 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 13 Sep 2006 13:41:37 -0700
Subject: how are dictionary literals handled by the interpreter?
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
Message-ID: <1158180096.940890.248050@i42g2000cwa.googlegroups.com>

akameswaran at gmail.com wrote:
> I wrote up a quick little set of tests, I was acutally comparing ways
> of doing "case" behavior just to get some performance information.  Now
> two of my test cases had almost identical results which was not at all
> what I expected.  Ultimately I realized I don't really know how
> literals are treated within the interpreter.
>
> The two implementations I was looking at were:
>
> class caseFunction(object):
>     def __init__(self):
>         self.caseDict = {'a':"retval = 'a'",
> 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
>
> "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
>                          "i":"retval='i'"}
>
>     def doIt(self,a):
>         exec(self.caseDict.get(a))
>         return retval
>
>
>
> def caseFunc3(a):
>     exec(  {'a':"retval = 'a'",
> 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
>
> "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
>                          "i":"retval='i'"}.get(a))
>     return retval
>
>
> I had expected caseFunc3 to be slower.  I had thought the interpreter
> would be recreating the dictionary each time, but that doesn't seem to
> be the case since performance of the class version and the function
> version are nearly identical on most runs.  If i rewrite caseFunc3 as:
>
> def caseFunc4(a):
>     exec(  dict({'a':"retval = 'a'",
> 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
>
> "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
>                          "i":"retval='i'"}).get(a))
>     return retval
>
> now with the explicit use of dict, i see the performace of the
> functional version decline as I initially expected.
>
> So what is happeneing in caseFunc3.  It seems as though the literal is
> "cached".  The other hypothesis I came up with is the name lookup for
> self.caseDict takes the same amount of time as creating the dictionary
> literal - but that doesn't make sense to me.
>
> Thanks

Why not check to see what the interpreter is doing?  Rather than
dealing with your overly complicated dictionaries, I've made a simple,
one case dictionary.  I've also done a similar bit to replicate your
doIt method.

>>> def case3(a):
...     exec( {'a': "retval = 'a'"}.get(a) )
...     return retval
...
>>> case3('a')
'a'
>>> def case4(a):
...     exec( dict({'a': "retval = 'a'"}).get(a) )
...     return retval
...
>>> case4('a')
'a'
>>> class caseFunction(object):
...     def doIt(self, a):
...         exec(self.caseDict.get(a))
...         return retval
...

Then, use the dis module to disassemble the function objects:
>>> import dis
>>> dis.dis(case3)
  2           0 BUILD_MAP                0
              3 DUP_TOP
              4 LOAD_CONST               1 ('a')
              7 LOAD_CONST               2 ("retval = 'a'")
             10 ROT_THREE
             11 STORE_SUBSCR
             12 LOAD_ATTR                0 (get)
             15 LOAD_FAST                0 (a)
             18 CALL_FUNCTION            1
             21 LOAD_CONST               0 (None)
             24 DUP_TOP
             25 EXEC_STMT

  3          26 LOAD_NAME                2 (retval)
             29 RETURN_VALUE
>>> dis.dis(case4)
  2           0 LOAD_NAME                0 (dict)
              3 BUILD_MAP                0
              6 DUP_TOP
              7 LOAD_CONST               1 ('a')
             10 LOAD_CONST               2 ("retval = 'a'")
             13 ROT_THREE
             14 STORE_SUBSCR
             15 CALL_FUNCTION            1
             18 LOAD_ATTR                1 (get)
             21 LOAD_FAST                0 (a)
             24 CALL_FUNCTION            1
             27 LOAD_CONST               0 (None)
             30 DUP_TOP
             31 EXEC_STMT

  3          32 LOAD_NAME                3 (retval)
             35 RETURN_VALUE
>>> dis.dis(caseFunction.doIt)
  3           0 LOAD_FAST                0 (self)
              3 LOAD_ATTR                1 (caseDict)
              6 LOAD_ATTR                2 (get)
              9 LOAD_FAST                1 (a)
             12 CALL_FUNCTION            1
             15 LOAD_CONST               0 (None)
             18 DUP_TOP
             19 EXEC_STMT

  4          20 LOAD_NAME                4 (retval)
             23 RETURN_VALUE
>>>

Take a look at what happens before the 'get' attribute is loaded in
each case.  In case 3, you've simply created a dictionary literal,
which is a very fast operation under Python.  In case 4, you've created
a dictionary literal, then you call the dict() function.  The dict
function will create a dictionary from the supplied dictionary, and
return the shallow copy.

Case 3 is slower, but the Python developers have worked to make
dictionary creation and look-up very fast.  Did you use the timeit
module to test your functions?

    --Jason



From p.lavarre at ieee.org  Fri Sep 22 14:19:09 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 22 Sep 2006 11:19:09 -0700
Subject: shlex.split != shlex.shlex get_token til eof
Message-ID: <1158949149.537922.272920@h48g2000cwc.googlegroups.com>

How can I instantiate shlex.shlex to behave like shlex.split does?

I see shlex.split gives me what I want:

import shlex
print shlex.split("1.2e+3")[0]          # 1.2e+3

But every doc'ed instantiation of shlex.shlex surprisingly gives me
something else:

s1 = shlex.shlex("1.2e+3", None, False)
print s1.get_token()                    # 1
s2 = shlex.shlex("1.2e+3", None, True)
print s2.get_token()                    # 1

I can get closer to the shlex.split state by hacking the shlex.shlex
state before the first get_token invocation:

s3 = shlex.shlex("1.2e+3", None, True)
s3.wordchars += ".+-"
print s3.get_token()                    # 1.2e+3

But how can I know if I've discovered the last hack that I need?

I ask because I'm patching a cmd.Cmd app to tweak the interpretation of
tokens. It was calling shlex.split. My class instead subclasses
shlex.shlex to catch the context of instream.tell().  That context lets
me see the significant differences between such sources as r'0xAB' and
r'0x"AB"'.

Can I somehow override just what I mean to change in shlex.split, and
not more?

Curiously yours, thanks in advance, Pat LaVarre
http://docs.python.org/lib/module-shlex.html
2.4.2#67 Python, 2.3.5#1 Python



From petr at tpc.cz  Mon Sep 11 03:20:42 2006
From: petr at tpc.cz (Petr Jakes)
Date: 11 Sep 2006 00:20:42 -0700
Subject: import gtk RuntimeError: could not open display
Message-ID: <1157959242.660721.189290@i42g2000cwa.googlegroups.com>

Hi
my script is working well when I am running it from the terminal
window. While I am trying to start it as a Cron job, I am getting an
Error described bellow:
My configuration: Pentium III, Python 2.4.1, Fedora Core4

Thanks for your comments.
Petr Jakes

File "/root/eric/analyza_dat_TPC/htmlgenerator.py", line 7, in ?
    from pylab import *
File "/usr/lib/python2.4/site-packages/pylab.py", line 1, in ?
    from matplotlib.pylab import *
File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 219,
in ?
    new_figure_manager, draw_if_interactive, show = pylab_setup()
File
"/usr/lib/python2.4/site-packages/matplotlib/backends/__init__.py",
line 23, in pylab_setup
    globals(),locals(),[backend_name])
File
"/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtkagg.py",
line 10, in ?
    from backend_gtk import gtk, FigureManagerGTK, FigureCanvasGTK,\
File
"/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py",
line 7, in ?
    import gtk; gdk = gtk.gdk
File "/usr/lib/python2.4/__init__.py", line 37, in ?

RuntimeError: could not open display



From http  Wed Sep  6 17:19:39 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 14:19:39 -0700
Subject: threading support in python
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
	<7xr6ypjr0r.fsf@ruckus.brouhaha.com>
	<1157566938.399058.242620@e3g2000cwe.googlegroups.com>
	<7xwt8goi1e.fsf@ruckus.brouhaha.com>
	<1157576408.630652.129150@m79g2000cwm.googlegroups.com>
Message-ID: <7x1wqovgk4.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> If they don't get GC'd, then "when they are GC'd" is never.  The point
> is that the standard library _does_ close files and take other
> program-visible actions in __del__ methods; I'm unclear on if you think
> that doing so is actually sloppy practice 

I don't know if I'd say "sloppy"; it's certainly messy and can lead to
complex bugs, but there are pragmatic reasons for wanting to do it in
some situations and it can be used to good purpose if you're careful.
But I think people sometimes expect too much from it, as Steve Holden
indicated.  

It should not be compared with C++ destructors, since C++ deallocation
is explicit.  I'm not sure what other languages with actual GC support
anything like it.  I implemented it in Lisp once but found it
disconcerting since some of the stuff removed by GC in the system I
was working on were no-longer-referenced graphics objects on the
screen, which would thereby wink out of existence at surprising times.
I concluded that the application should keep track of stuff like that
instead of tossing them into the air for the GC to clean up.

> I originally thought that was what you meant when you said that "GC is
> supposed to make it look like every object stays around forever, and
> any finalizer that causes an explicit internal state change in an
> extant object (like closing a file or socket) is not in the GC spirit
> to begin with." but going back and reading it I'm not sure.

GC is supposed to just release resources that are no longer referenced
(since you can't tell whether they're still around, you can act as if
they are always stay around).  For files, maybe closing them is
ok--the file abstraction mimics synchronous i/o and in the idealized
version, closing them is a do-nothing and the closure is undetectable.
For sockets (which are supposed to send particular messages over the
wire when the socket shuts down) it's less appealing.


From john at baumanfamily.com  Thu Sep 28 23:57:43 2006
From: john at baumanfamily.com (John Bauman)
Date: Thu, 28 Sep 2006 23:57:43 -0400
Subject: running commands with sudo & python
In-Reply-To: <1159478294.302376.119620@h48g2000cwc.googlegroups.com>
References: <1159478294.302376.119620@h48g2000cwc.googlegroups.com>
Message-ID: <4CCdnWbBAbwkBIHYUSdV9g@ptd.net>

coldsoul4e at googlemail.com wrote:
> Hi!
> I must execute a command with os.command(), but with root permissions.
> Is there anyway to do that with python? 
> Thanks
> 
http://en.wikipedia.org/wiki/Setuid
Of course, it's not generally a good idea to have your program keep root 
permissions after it does whatever it needs to do.


From nicolasfr at gmail.com  Sat Sep 16 13:16:18 2006
From: nicolasfr at gmail.com (nicolasfr at gmail.com)
Date: 16 Sep 2006 10:16:18 -0700
Subject: Pythondocs.info : collaborative Python documentation project
Message-ID: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>

Hi,

I am a bit disapointed with the current Python online documentation. I
have read many messages of people complaining about the documentation,
it's lack of examples and the use of complicated sentences that you
need to read 10 times before understanding what it means.

That's why I have started a collaborative project to make a user
contributed Python documentation. The wiki is online here:
http://www.pythondocs.info

This is a fresh new website, so there's not much on it, but I hope to
make it grow quickly. Help and contributions are welcome; Please
register and start posting your own documentation on it.

Regards,

Nicolas.
-----
http://www.pythondocs.info



From haraldarminmassa at gmail.com  Fri Sep 15 12:47:40 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 15 Sep 2006 09:47:40 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
Message-ID: <1158338860.438887.303880@p79g2000cwp.googlegroups.com>

Dale,

> Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
> a newly inserted record?

using OIDs as primary key was no good idea for some PostgreSQL versions
allready ... i.e. they really make dump & restore much more
challenging.

So usually us have something along:

CREATE TABLE feuser
(
  id_user serial NOT NULL,
  name text,
  CONSTRAINT feuser_pkey PRIMARY KEY (id_user),
  CONSTRAINT feuser_name_key UNIQUE (name)
)
WITHOUT OIDS;

which automatically creates a sequence for you and rewrites the serial
"id_user" with a default of

nextval('feuser_id_user_seq'::regclass)

So, to get the key of a record inserted, basically there are two
methods. (from now on "cs" is a DB-API 2.0 compliant cursor object,
i.e. from psycopg2

cn=psycopg2.connect(....)
cs=cn.cursor()

a) get id first, then insert
cs.execute("select nextval('feuser_id_user_seq'::regclass)")
newid=cs.fetchone()[0]

cs.execute("insert into feuser (id_user, name) values (%(id_user)s,
%(name)s)",
             dict(id_user=newid, name="Karl Napf")

cs.commit()
-> now newid contains your new id.

b) create a serverside function on PostgreSQL:
CREATE OR REPLACE FUNCTION insfeuser (text)
  RETURNS integer AS
$BODY$
        DECLARE
            result int4;
        BEGIN

           select nextval('feuser_id_user_seq'::regclass) into result;
  	   insert into feuser (id_user, name) values (result, $1);

     RETURN result;
END;

$BODY$
  LANGUAGE 'plpgsql' VOLATILE;

within python:
cs.execute("select insfeuser(%(name)s)",  dict(name="Karl Napf"))
newid=cs.fetchone()[0]

Hope that helps,

Harald

--
GHUM Harald Massa
persuadere et programmare
Harald Armin Massa
Reinsburgstra?e 202b
70197 Stuttgart
0173/9409607



From tim at tdw.net  Thu Sep 14 06:08:55 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 14 Sep 2006 11:08:55 +0100
Subject: sending emails using python
In-Reply-To: <R52316257.75.16985.1@mx-extra>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
	<R52316257.75.16985.1@mx-extra>
Message-ID: <9afea2ac0609140308k40809493x93f8e4e8dc30afbb@mail.gmail.com>

On 14 Sep 2006 00:11:05 -0700, sridhar <ramasridhar.kasturi at gmail.com> wrote:
>
> Tim Williams wrote:
> > Have you verified that you are allowed to use SMTP on this server ?
> > Can you send email via it using outlook express or a similar POP3/IMAP
> > mail client?
> >
> > :)
>
>
> yes , because iam having account on that server

Having an account on an Exchange server doesn't automatically mean you
have SMTP access to that server.    Some exchange servers don't have
SMTP running at all, and others will not allow SMTP access from local
IP addresses - even with authentication.

Can you telnet to your Exchange server on port 25 and start an SMTP
conversation, using the EHLO or HELO, MAIL and RCPT commands, but
quitting before the DATA command?  If you can successfully specify a
recipient, then your script should work,  if not you will need your
script to work around the problem based on what you do or don't get
back from the server.

HTH :)


From jaysherby at gmail.com  Fri Sep 29 20:41:28 2006
From: jaysherby at gmail.com (Jay)
Date: 29 Sep 2006 17:41:28 -0700
Subject: DAT file compilation
In-Reply-To: <GOiTg.311$NE6.235@newssvr11.news.prodigy.com>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
	<4o5qhvFd1bddU1@uni-berlin.de>
	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>
	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>
Message-ID: <1159576888.862008.286980@m73g2000cwd.googlegroups.com>

That cgi idea is really cool, but I don't have any web space to host
the files.  Plus the bandwidth required would be deadly.  I think I'll
just have to stick to the zip file idea.  The problem with the
read-only is that this program is aimed at a Windows audience.

James Stroud wrote:
> Jay wrote:
> > That's one solution, but I'd rather a file format the end-user can't
> > easily mess around with.
>
> Require the program to be installed as root and installation to be in a
> read-only directory--or serve the resources to your program from a cgi
> script somewhere, only to be downloaded when needed. This way, the user
> would at least have to reverse engineer your program to see where the
> resources were coming from so they could plug the appropriate query in
> their web browser.
>
> James
>
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/



From rosedb0 at gmail.com  Mon Sep  4 19:42:21 2006
From: rosedb0 at gmail.com (hiaips)
Date: 4 Sep 2006 16:42:21 -0700
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
Message-ID: <1157413341.812545.51970@m73g2000cwd.googlegroups.com>


metaperl.etc at gmail.com wrote:
> Earlier I asked about how people installed Python on OS X, given that
> one can choose from Xcode, Fink, Darwin, ActiveState and source builds:
>
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/5c4cde4206d1fbb7/37de06a6bb6b2361?lnk=gst&q=OS+X+and+Python+-+what+is+your+install+strategy%3F&rnum=1#37de06a6bb6b2361
>
> but before I knew it, I had been sucked in by the ease and vastness of
> the Fink repository.
>
> Now my bliss run has come to a full halt due to these instructions at
> `wxPython.org <http://www.wxpython.org/download.php>`_
>
> Note to Fink users: Versions of Python installed by Fink cannot run
> wxPython (unless you install and run X11...). You need to use Apple's
> Framework builds, or a third-party Framework build.
>
> And reading a bit further:
>
> Python 2.4 Framework builds are available for download from the
> undefined.org MacPython site. ActiveState also distributes a Framework
> build.
>
> So I guess I will look into a Framework build as my starting point.

I'd really recommend using the universal build from python.org. As a
previous poster mentioned, it is a framework build. I've never had any
trouble using wxPython in conjunction with it, either.



From robert.kern at gmail.com  Wed Sep 27 13:09:35 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 27 Sep 2006 12:09:35 -0500
Subject: f2py on windows tutorials
In-Reply-To: <1159364285.218632.35040@h48g2000cwc.googlegroups.com>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>	<mailman.504.1159044688.10491.python-list@python.org>	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>	<mailman.730.1159299369.10491.python-list@python.org>	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>	<efcddb$itm$1@sea.gmane.org>	<mailman.753.1159314004.10491.python-list@python.org>
	<1159364285.218632.35040@h48g2000cwc.googlegroups.com>
Message-ID: <efeb89$mv6$1@sea.gmane.org>

Flavio wrote:
> Ok,
> 
> I tried that and it seems we are making progress
> 
> so here is my command:
> 
> python setup.py build_ext --compiler=mingw32 --fcompiler=gnu
> 
> Now it is complaining about my pyf!!
> 
> error: unknown file type '.pyf'
> 
> here is my setup .py:
> 
> import setuptools, os
> from numpy.distutils.core import setup, Extension
> 
> #Configuring Build
> libs=[];libdirs=[];f2pyopts=[]
> if os.name == 'nt':
>     f2pyopts.extend(["--compiler=mingw32","--fcompiler=gnu"])

These don't belong here. If you don't want to type them in at the command line, 
put them in a setup.cfg file next to your setup.py:


[build_ext]
compiler=mingw
fcompiler=gnu


(Note: "mingw", not "mingw32"!)

> flib = Extension(name='flib',
>                         libraries=libs,
>                         library_dirs=libdirs,
>                         f2py_options=f2pyopts,
> 
> sources=['model-builder/Bayes/flib.f','model-builder/Bayes/flib.pyf',]

The .pyf file needs to come first.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From robertobech at gmail.com  Sun Sep 24 10:43:45 2006
From: robertobech at gmail.com (Roberto Bechtlufft)
Date: 24 Sep 2006 07:43:45 -0700
Subject: RSS aggregator with curses and feedparser
In-Reply-To: <1159105479.747450.222690@d34g2000cwd.googlegroups.com>
References: <1159105479.747450.222690@d34g2000cwd.googlegroups.com>
Message-ID: <1159109024.989058.300310@h48g2000cwc.googlegroups.com>

And another thing: feedparser returns the result entries as
dictionaries. What's the best approach to create my cache file? I see
that the cache file in liferea is an xml file. Should I try to create
my own xml file based on the results from feedparser?

Thanks for your help.

Roberto Bechtlufft wrote:
> Hi, I'm new around here... I'm a Python hobbyist, and I'm far from
> being a professional programmer, so please be patient with me...
>
> I'm working on my first Python program: a curses based RSS Aggregator.
> It's basically a clone of snownews, one of my very favorite programs.
> But I want to add some funcionality. Whenever you update a feed in
> snownews, it loses all previous topics, even though you may not have
> read them, it only keeps the current topics. I want my program to
> actually aggregate feeds. Also, I want to make it able to read atom
> feeds, which is easy since I'm using feedparser. I see that liferea
> keeps a cache file for each feed it downloads, storing all of it's
> topics. I'm doing the same here.
>
> A question: how do I tell my program that a certain entry was/wasn't
> downloaded yet? Should I use the date or link tag of the entry?



From rhymes at myself.com  Wed Sep 13 12:16:14 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Wed, 13 Sep 2006 18:16:14 +0200
Subject: python threading
References: <1158159241.154089.266630@h48g2000cwc.googlegroups.com>
Message-ID: <1hlm7zt.1jc8g6t3w7tv3N%rhymes@myself.com>

daniel <daniel.baluta at gmail.com> wrote:
> can someone give me a good threading tutorial

http://awaretek.com/tutorials.html#thread
and
http://www.google.com/search?q=python+threading+tutorial

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From AbrahamLincolnIllinois at yahoo.com  Thu Sep 14 09:25:26 2006
From: AbrahamLincolnIllinois at yahoo.com (AbrahamLincolnIllinois at yahoo.com)
Date: 14 Sep 2006 06:25:26 -0700
Subject: Unit balancing
References: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
	<ee9890$b75$1@newsreader2.netcologne.de>
Message-ID: <1158240326.403134.97510@m73g2000cwd.googlegroups.com>

Thanks, all.  

We will investigate Unum.  


              Abraham



From raschulmanxx at verizon.net  Sat Sep 16 14:31:33 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Sat, 16 Sep 2006 18:31:33 GMT
Subject: Unicode / cx_Oracle problem
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
	<rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
	<4mi503F63uluU1@uni-berlin.de>
	<8ce8g29hsh0qefore6psbbrmifiai1vt34@4ax.com>
	<1157927237.576170.84270@p79g2000cwp.googlegroups.com>
Message-ID: <2kgog29das5up4k8p38kr27co4mb0c4k1i@4ax.com>

On 10 Sep 2006 15:27:17 -0700, "John Machin" <sjmachin at lexicon.net>
wrote:

>...
>Encode each Unicode text field in UTF-8. Write the file as a CSV file
>using Python's csv module. Read the CSV file using the same module.
>Decode the text fields from UTF-8.
>
>You need to parse the incoming line into column values (the csv module
>does this for you) and then convert each column value from
>string/Unicode to a Python type that is compatible with the Oracle type
>for that column.
>...

John, how am I to reconcile your suggestions above with my
ActivePython 2.4 documentation, which states:

<<12.20 csv -- CSV File Reading and Writing 
<<New in version 2.3. 
...
<<Note: This version of the csv module doesn't support Unicode input.
Also, there are currently some issues regarding ASCII NUL characters.
Accordingly, all input should generally be printable ASCII to be safe.
These restrictions will be removed in the future.>>

Regards,
Richard Schulman


From jaysherby at gmail.com  Fri Sep  1 18:23:21 2006
From: jaysherby at gmail.com (Jay)
Date: 1 Sep 2006 15:23:21 -0700
Subject: pictures as characters in a Tk text box?
Message-ID: <1157149401.300181.300010@e3g2000cwe.googlegroups.com>

This may be really obscure, but I had a dream about programming
something like this, so don't blame me.  Is it possible to take a small
image or icon and display it as a character in a Tk text box?  Think
how Thunderbird displays text smilies as actual smiley icons.  Or how
in AIM as you type a smiley, it replaces it with the picture.  Does
anyone know how to display these specifically in a Tk text box?  Thanks.



From vedran_dekovic at yahoo.com  Sat Sep 30 12:04:32 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 30 Sep 2006 09:04:32 -0700
Subject: _gtk
Message-ID: <1159632272.796759.109940@e3g2000cwe.googlegroups.com>

Hello,
Where to I download module:  _gtk



From __peter__ at web.de  Tue Sep 26 14:27:11 2006
From: __peter__ at web.de (Peter Otten)
Date: Tue, 26 Sep 2006 20:27:11 +0200
Subject: [OT] Re: ultra newbie question (don't laugh)
References: <TjaSg.26$1n3.125@news.tufts.edu>
	<mailman.705.1159285715.10491.python-list@python.org>
	<GgdSg.28$1n3.401@news.tufts.edu>
Message-ID: <efbrat$chn$00$1@news.t-online.com>

John Salerno wrote:

> Thanks Fredrik! My initial feeling was the opposite, i.e. don't rush
> into anything, just stop and think about how I want to do this first.
> But then of course the possibilities piled up and I was stuck, so your
> suggestion is probably much better at this point. I just need to try
> some things! If nothing else, I'll learn what's efficient and what's not.

Here's a lighthearted take on the matter:

http://www.theonion.com/content/node/47469 

(link found in a post to python-dev by the notorious Fredrik Lundh)

Peter


From metaperl at gmail.com  Mon Sep 25 08:50:00 2006
From: metaperl at gmail.com (metaperl)
Date: 25 Sep 2006 05:50:00 -0700
Subject: One program in different GUI Toolkits
In-Reply-To: <mailman.549.1159160457.10491.python-list@python.org>
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
	<1159011106.418155.118660@m73g2000cwd.googlegroups.com>
	<1159126636.402693.231540@k70g2000cwa.googlegroups.com>
	<mailman.549.1159160457.10491.python-list@python.org>
Message-ID: <1159188600.131552.153500@h48g2000cwc.googlegroups.com>


Steve Holden wrote:
> metaperl.etc at gmail.com wrote:
> > Actually due to lack of documentation and feedback from the mailing
> > list, I am fallen out of love with Pythoncard and in love with
> > Kiwi/Pygtk. Given the large groundswell support for pygtk, i dont think
> > I will be disappointed.
>
> >
> In and out of love in eight hours and six minutes? I'm glad I don't have
> a daughter ;-)

heheh... I am rather mercurial (oops, no pun intended). I have never
held a job in the IT industry for a year in 7 years of professional
work: http://www.metaperl.com

But I just found out I get a 4-month penalty if I break my current
condo lease, so for once, I think I will stay put for a year.



From metaperl at gmail.com  Sat Sep 23 07:35:16 2006
From: metaperl at gmail.com (metaperl)
Date: 23 Sep 2006 04:35:16 -0700
Subject: Application logging to screen and file - any favorite modules (no
	luck on cheeseshop)
In-Reply-To: <mailman.493.1158991519.10491.python-list@python.org>
References: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
	<mailman.493.1158991519.10491.python-list@python.org>
Message-ID: <1159011316.787982.251620@h48g2000cwc.googlegroups.com>


Robert Kern wrote:
> metaperl wrote:
> > Hello, I am looking for a module which has

>
> You should look in the standard library before hitting the Package Index.
>
> http://www.python.org/doc/current/lib/module-logging.html
>

Very nice module. Thanks for the pointer.



From samirbenabid at linuxmail.org  Thu Sep  7 15:41:06 2006
From: samirbenabid at linuxmail.org (samir)
Date: 7 Sep 2006 12:41:06 -0700
Subject: Extracting text from a string + note
In-Reply-To: <1157657044.162922.80290@i3g2000cwc.googlegroups.com>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
	<1157657044.162922.80290@i3g2000cwc.googlegroups.com>
Message-ID: <1157658066.048673.86540@m79g2000cwm.googlegroups.com>

Saluton!

 Tempo wrote:
 > I am having a little trouble extracting text from a string. The
 > string that I am dealing with is pasted below, and I want to
 > extract the prices that are contained in the string below.

 This string is absolutely an XML chunk.
Just use xmllib.

Adiaux 
Samir



From sybrenUSE at YOURthirdtower.com.imagination  Sun Sep  3 20:01:50 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 4 Sep 2006 02:01:50 +0200
Subject: FYI: getting data from an OpenOffice.org spreadsheet
References: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
	<1157322088.590298.192560@h48g2000cwc.googlegroups.com>
	<slrnefmm9q.egf.sybrenUSE@schuimige.stuvel.eu>
	<1157327419.961338.229230@m73g2000cwd.googlegroups.com>
Message-ID: <slrnefmr7e.fhn.sybrenUSE@schuimige.stuvel.eu>

John Machin enlightened us with:
> Firstly, let me say that you are highly commended for wading so far
> into the OOo docs and producing two pieces of code that actually do
> something. I've opened up the docs two or three times, said "Waaahht
> the ...." and closed them rapidly.

Thanks. I had the same response, except that I had the gut feeling
that in the end things were going to be easy ;-)

> I don't "want" you to do anything. However the interests of
> evangelising/spreading the use of OOo software might be advanced
> were you to go the extra step or two and post a recipe for simple
> data extraction from a named file, rather than the currently open
> file. Add a few hints like what are the types of the data that you
> get back (especially how dates are distinguished from numbers, if at
> all) and you'll be a hero :-)

Sounds very tempting. I'll see what I can come up with, and write a
proper article on my website. Don't count on it being finished soon,
though, because this week is going to be very busy for me, and after
that I'll be on a two-week holiday.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From steve at holdenweb.com  Thu Sep  7 06:11:17 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 11:11:17 +0100
Subject: getting quick arp request
In-Reply-To: <1157618579.686511.274150@b28g2000cwb.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>	<1157565629.691753.115910@e3g2000cwe.googlegroups.com>
	<1157618579.686511.274150@b28g2000cwb.googlegroups.com>
Message-ID: <edor71$ca8$1@sea.gmane.org>

Ben Sizer wrote:
> kondal wrote:
> 
>>>Something is limiting the TCP/IP connections from my python program at
>>>10 maximum at the same time.
>>>I do not see this limit in my code.
>>>I did not bumped over the 4226 error.
>>>
>>>=> Where does this limit come from.
>>>=> How can I overcome it.
>>
>>You can just edit it by creating a new key in the registry.
>>
>>HKEY_LOCAL_MACHINE - SYSTEM - CurrentControlSet - Services -Tcpip -
>>Parameters
>>
>>Create a DWORD key named "TcpNumConnections" and set the value to
>>00fffffe or 16777214.
> 
> 
> That's the maximum number of connections, which is unlikely to be what
> he's running up against. It's more likely the original poster is
> hitting the max number of half-open connections, which is limited to 10
> (exactly the figure he's seeing). Perhaps the 4226 event just isn't
> appearing for some reason. I've had that myself sometimes.
> 
> There is an unofficial OS-level patch for this behaviour at this
> address: http://www.lvllord.de/?lang=en&url=downloads
> 
> No idea if it works or if it's safe, but many people use it.
> 
Is it relevant to point out that the ARP protocol is a connectionless 
network-layer protocol, so it would seem a little bogus of the Microsoft 
stack to apply TCP control parameters to it.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From onurb at xiludom.gro  Fri Sep  1 12:25:44 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 18:25:44 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <ed9g10$kt2$1@news.lysator.liu.se>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
	<44f81592$0$6993$626a54ce@news.free.fr>
	<ed9g10$kt2$1@news.lysator.liu.se>
Message-ID: <44f85f08$0$1783$636a55ce@news.free.fr>

Joel Hedlund wrote:
>> I still wait for a
>> proof that it leads to more robust programs - FWIW, MVHO is that it
>> usually leads to more complex - hence potentially less robust - code.
> 
> MVHO? I assume you are not talking about Miami Valley Housing
> Opportunities here, 

Nope --> My Very Humble Opinion

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From __peter__ at web.de  Sat Sep 23 08:11:58 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 23 Sep 2006 14:11:58 +0200
Subject: "re" vs "sre"?
References: <ef371q$4ui$1@lust.ihug.co.nz>
Message-ID: <ef387g$t6m$01$1@news.t-online.com>

Lawrence D'Oliveiro wrote:

> I learned about Python regular expressions from the Web documentation
> <http://docs.python.org/lib/lib.html>. This describes a module named "re".
> Then I saw some code written by a colleague, and he was using a module
> named "sre". I checked my Python 2.4.3 installation, and sure enough, I
> have a module named "sre" as well as "re". Curious, I fired up an
> interactive Python session, and looked to see what the docstrings were for
> these modules. And for the "re" module, the help says:
> 
>     re - Minimal "re" compatibility wrapper.  See "sre" for documentation.
> 
> and "sre" seems to have the more complete set of docstrings.
> 
> So which one should we be using?

Here's what Python 2.5 has to say on the matter:
>>> import sre
__main__:1: DeprecationWarning: The sre module is deprecated, please import
re.

Peter


From MonkeeSage at gmail.com  Thu Sep 21 04:32:55 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 21 Sep 2006 01:32:55 -0700
Subject: Is it possible to save a running program and reload next time ?
References: <mailman.386.1158824225.10491.python-list@python.org>
Message-ID: <1158827575.190166.39680@h48g2000cwc.googlegroups.com>

fdu.xiaojf at gmail.com wrote:
> Is it possible that the program can save all running data to a file when
> I want it to stop, and can reload the data and continue to run from
> where it stops when the computer is free ?

This isn't what you asked for (I have no idea how to do that), but
given your description, perhaps a different solution would work.

If you're using a *nix type OS (or possibly Cygwin, never tried) with a
bash-style shell, then you probably already have job control built in.
For example, in bash you can type <CTRL>Z to stop the current process,
and you can see all jobs and their states and job numbers with the
'job' command, and you can resume a stopped job with '%[job_number]'.
So for example, if only one job is in he queue, just stop it and then
when you're ready do %1.

Another *nix option would be to use the nice command to set the
schedular priority of the process so that when something with a higher
priority needs the CPU then it gets it first rather than your nice'd
process (something like 'nice -n 15 python your_program.py' should do
well -- very low priority). I'm pretty sure windows has some kind of
priority option for tasks as well, in fact, IIRC you open the task
manager and right click on a task and can set the priority lower.

Regards,
Jordan



From wildemar at freakmail.de  Wed Sep 13 15:18:04 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Wed, 13 Sep 2006 21:18:04 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <1158167657.792186.221490@e3g2000cwe.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
Message-ID: <4508596C.6050308@freakmail.de>

stu wrote:
> jedit
> 
> http://www.jedit.org/

Finally! I usually try to stay out of these discussions; yet I'm always 
disappointed at how few people seem to be using jEdit and how long it 
takes them to come out of their holes.

So let me enforce that:

jEdit
www.jedit.org

wildemar


From larry.bates at websafe.com  Tue Sep 19 11:22:23 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 19 Sep 2006 10:22:23 -0500
Subject: win32 Service: path to .py script
In-Reply-To: <4d818$450ff76d$506c2949$8802@news.chello.at>
References: <4d818$450ff76d$506c2949$8802@news.chello.at>
Message-ID: <45100B2F.6090409@websafe.com>

Gregor Horvath wrote:
> Hi,
> 
> I have a testservice.py (see below). I installed the Windows-Service
> successfully. (via commandlineoption install)
> The problem is that it runs only when it is in c:\windows\system32 or in
> the python path.
> I added the desired path (Y:\) to the PYTHONPATH environment variable
> for the system account and rebooted.
> When I start command line python and do a import testservice everything
> is fine.
> Starting the service with the script only in Y:\ gives the error in the
> event log:
> 
> Python could not import the service's module
> 
> exceptions.ImportError: No module named testservice
> 
> Thanks for your help.
> 
> --
> Greg
> 
> testservice.py:
> 
> import win32serviceutil, win32service
> import servicemanager
> import win32api
> import win32event
> import sys
> 
> class TestPipeService(win32serviceutil.ServiceFramework):
>     _svc_name_ = "MDE Dispatcher"
>     _svc_display_name_ = "MDE-Dispatcher"
>     _svc_description_ = "Dispatches machine events from the Siemens ODC
> to registrered MDE clients (windows) over the network via XML-RPC"
>     def __init__(self, args):
>         win32serviceutil.ServiceFramework.__init__(self, args)
>         self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
> 
>     def SvcStop(self):
>         self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
>         win32event.SetEvent(self.hWaitStop)
> 
> 
>     def SvcDoRun(self):
>         # Write an event log record - in debug mode we will also
>         # see this message printed.
>         servicemanager.LogMsg(
>                 servicemanager.EVENTLOG_INFORMATION_TYPE,
>                 servicemanager.PYS_SERVICE_STARTED,
>                 (self._svc_name_, '')
>                 )
> 
>         while 1:
>             win32api.Sleep(2)
>             rc = win32event.WaitForSingleObject(self.hWaitStop, 2000)
>             if rc == win32event.WAIT_OBJECT_0:
>                 break
> 
> 
>         # Write another event log record.
>         servicemanager.LogMsg(
>                 servicemanager.EVENTLOG_INFORMATION_TYPE,
>                 servicemanager.PYS_SERVICE_STOPPED,
>                 (self._svc_name_, " TEST ")
>                 )
> 
> 
> if __name__=='__main__':
>     win32serviceutil.HandleCommandLine(TestPipeService)
> 
I believe that your problem is that services run under Local
System account.  Normally Local System account would not have
a drive mapping Y:\.  You can change the account that a service
runs under in the Service Manager-Log On tab.  Normally you
wouldn't run services from mapped drives, they would be
installed on local machine and started from there.  If services
need to access mapped drives, you need to put full UNC
pathnames to access them or run the services under an account
that has the drives mapped properly.

-Larry Bates


From gagsl-py at yahoo.com.ar  Tue Sep 26 21:56:25 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 22:56:25 -0300
Subject: releasing memory to malloc
In-Reply-To: <1159319835.249502.65220@i3g2000cwc.googlegroups.com>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
	<1159319835.249502.65220@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926223934.04addae8@yahoo.com.ar>

At Tuesday 26/9/2006 22:17, iker.arizmendi at gmail.com wrote:

>I can, but the extension is only a thin wrapper around a general
>purpose C library which is also used independently of Python.

If you can recompile a specific version for using with Python, you 
can play with a few macros like

#ifdef USE_PYTHON_ALLOCATOR
#define my_malloc(s) PyMem_Malloc(s)
#else
#define my_malloc(s) malloc(s)
#endif

and change all bare malloc/realloc/free along the code to 
my_malloc/etc. (Chances are the code is using a special malloc 
spelling already, C guys tend to do such things...)
Then you can recompile it for use with or without Python.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From cjlesh at gmail.com  Mon Sep 11 21:34:32 2006
From: cjlesh at gmail.com (cjl)
Date: 11 Sep 2006 18:34:32 -0700
Subject: Running python from a usb drive
In-Reply-To: <tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
Message-ID: <1158024872.905234.117100@m73g2000cwd.googlegroups.com>

Hey all:

I'm getting closer. My startpython.bat file is now:

path=%PATH%;%CD%Python24;%CD%Python24\libs;%CD%Python24\Scripts;%CD%Python24\Lib\site-packages;%CD%Python24\DLLs
set PYTHONPATH=%CD%Python24
ASSOC .py=Python.File
ASSOC .pyc=Python.CompiledFile
ASSOC .pyo=Python.CompiledFile
ASSOC .pyw=Python.NoConFile
FTYPE Python.File=%CD%Python24\python.exe "%1" %*
FTYPE Python.CompiledFile=%CD%Python24\python.exe "%1" %*
FTYPE Python.NoConFile=%CD%Python24\pythonw.exe "%1" %*
set PATHTEXT=%PATHTEXT%;.py;.pyc;.pyo;.pyw
cmd

I am having a problem with the ftype commands as written above. If I
type them from the command line exactly like above they work. But for
some reason they do not work from my batch file. Anyone familiar with
bath file syntax that can help me? I am very close here...

Thanks again,
CJL



From cfbolz at gmx.de  Fri Sep 29 14:54:59 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Fri, 29 Sep 2006 20:54:59 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
Message-ID: <451D6C03.1020708@gmx.de>

Larry Hastings wrote:
[snip]
> The core concept: adding two strings together no longer returns a pure
> "string" object.  Instead, it returns a "string concatenation" object
> which holds references to the two strings but does not actually
> concatenate
> them... yet.  The strings are concatenated only when someone requests
> the
> string's value, at which point it allocates all the space it needs and
> renders the concatenated string all at once.
[snip]

Sounds cool. If I understand it correctly you can write even meaner (and
probably even more useless in practive) benchmarks where you safe some
of the intermediate results of the concatenation, thus also explointing
the better space behaviour:


all = []

s = ""

for i in range(1000):
    s = s + (str(i) + " ") * 1000
    all.append(s)


This should take around 2GB of RAM (so maybe you shouldn't even run it
:-) ) on an unpatched CPython but a lot less with your patch.

<sidenode>
This is exactly the sort of experiment that is extremely easy
to do with PyPy. In fact, some other PyPyers and me wrote a very similar
optimization, which can be compiled in if wanted (or not). The whole
implementation took roughly 100 lines of code, of which 65 are in a
separate file not touching anything else, the rest being minimally
invasive changes. We also implemented a similar optimization for string
slicing (only if the slice has a substantial length and a step of 1).
</sidenode>

Cheers,

Carl Friedrich Bolz



From ask at me  Mon Sep  4 16:06:02 2006
From: ask at me (alf)
Date: Mon, 04 Sep 2006 16:06:02 -0400
Subject: inaccuracy in the time module
In-Reply-To: <7x64g3l5fq.fsf@ruckus.brouhaha.com>
References: <AvmdndRyXfGBDGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
	<7x64g3l5fq.fsf@ruckus.brouhaha.com>
Message-ID: <AvmdndZyXfFRD2HZnZ2dnUVZ_oOdnZ2d@comcast.com>

Paul Rubin wrote:
> alf <ask at me> writes:
> 
>> >>> t=time()
>> >>> mktime(gmtime(t))-t
>>17999.680048942566
>>why there is a difference?
> 
> 
> time() is a floating point number with fractional seconds.
> gmtime()'s resolution is one second.

thx, got it now. replacing with "t=round(time())" fixes the problem.

-- 
Andy


From olive at apaloseco.com  Thu Sep 14 07:10:05 2006
From: olive at apaloseco.com (olive)
Date: 14 Sep 2006 04:10:05 -0700
Subject: lxml Windows binaries
In-Reply-To: <mailman.73.1158224324.10491.python-list@python.org>
References: <mailman.73.1158224324.10491.python-list@python.org>
Message-ID: <1158232205.473805.176330@i42g2000cwa.googlegroups.com>


http://puggy.symonds.net/~ashish/downloads/ 

HTH



From johnjsal at NOSPAMgmail.com  Tue Sep 19 16:35:45 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 20:35:45 GMT
Subject: new string method in 2.5 (partition)
In-Reply-To: <45104A05.4090600@websafe.com>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<atXPg.9$1n3.69@news.tufts.edu> <45104A05.4090600@websafe.com>
Message-ID: <BwYPg.10$1n3.130@news.tufts.edu>

Larry Bates wrote:
> John Salerno wrote:
>> Bruno Desthuilliers wrote:
>>
>>> Err... is it me being dumb, or is it a perfect use case for str.split ?
>> Hmm, I suppose you could get nearly the same functionality as using
>> split(':', 1), but with partition you also get the separator returned as
>> well.
>>
>>> There are IMVHO  much exciting new features in 2.5 (enhanced
>>> generators, try/except/finally, ternary operator, with: statement etc...)
>> I definitely agree, but I figure everyone knows about those already.
>> There are also the startswith() and endswith() string methods that are
>> new and seem neat as well.
> 
> FYI- .startswith() and .endswith() string methods aren't new in 2.5.
> They have been around since at least 2.3.
> 
> Larry Bates

Oops, just a slight change in their functionality:

The startswith() and endswith() methods of string types now accept 
tuples of strings to check for.

def is_image_file (filename):
     return filename.endswith(('.gif', '.jpg', '.tiff'))

(Implemented by Georg Brandl following a suggestion by Tom Lynn.)


From lh84777 at yahoo.fr  Wed Sep  6 15:21:09 2006
From: lh84777 at yahoo.fr (lh84777 at yahoo.fr)
Date: 6 Sep 2006 12:21:09 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157566390.675460.188470@e3g2000cwe.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>
Message-ID: <1157570469.607938.211180@m79g2000cwm.googlegroups.com>


Here is another version,

class ChunkeredBuffer:
    def __init__(self):
        self.buffer = []
        self.sentries = []
    def append(self, item):
        self.buffer.append(item)
    def chunk(self, chunkSize, keepFirst = False):
        self.sentries.append(len(self.buffer))
        forget = self.sentries[:-chunkSize]
        if not keepFirst and len(self.sentries) < chunkSize:
            return
        if forget != []:
            last = forget[-1]
            self.buffer = self.buffer[last:]
            self.sentries = [x - last for x in self.sentries[1:]]
        print >> sys.stderr, self.sentries, len(self.sentries), forget
        return self.buffer

but i was wondering how i could add, the last items if needed:

it looks . like .
like .

to the previous:

this .
this . is a .
this . is a . test to .
is a . test to . check if it .
test to . check if it . works .
check if it . works . well .
works . well . it looks like .

to have:

this .
this . is a .
this . is a . test to .
is a . test to . check if it .
test to . check if it . works .
check if it . works . well .
works . well . it looks like .
it looks . like .
like .



From franz.steinhaeusler at gmx.at  Wed Sep 20 02:27:30 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Wed, 20 Sep 2006 08:27:30 +0200 (CEST)
Subject: One program in different GUI Toolkits
Message-ID: <eeqn0i$d8n$1@newsreader2.utanet.at>

Hello NG,

I have a suggestion.

For simplifying learning or switching between different GUI
Toolkits, I could imagine to have one short clearly presented
program in different GUI Toolkits.

What about for example wxProject?

http://wiki.wxpython.org/index.cgi/WxProject 
or some other suggestion to take as base program.
(could contain menus, buttons, listboxes, dialogs, ...)

I would be very interested how it would looks in:
wxPython
pyGtk
pyQt
TkInter


Maybe in:
Wax
PythonCard
PyFLTK
...


Anybody is interested in implementing in one other GUI?
We could put in on one Python wiki page for example.

Many thanks in advance!


-- 
Franz Steinhaeusler



From could.net at gmail.com  Wed Sep 13 02:09:36 2006
From: could.net at gmail.com (could.net at gmail.com)
Date: 12 Sep 2006 23:09:36 -0700
Subject: How to compare to directories?
Message-ID: <1158127776.413699.170750@e63g2000cwd.googlegroups.com>

I want to compare 2 directories: dir1 and dir2.
What I want to do is to get these informations:
1. does they have the same number of files and sub-directories?
2. does each file with the same name have the same size and date
information?

So, how can I do it in python?
Thank you!



From ej  Thu Sep 28 13:23:25 2006
From: ej (Erik Johnson)
Date: Thu, 28 Sep 2006 11:23:25 -0600
Subject: help tranlating perl expressions
References: <5452284.reKt6RD0Uf@teancum>
Message-ID: <451c0524$1@nntp.zianet.com>


"David Bear" <david.bear at asu.edu> wrote in message
news:5452284.reKt6RD0Uf at teancum...

>  my $klen = length($key);
>  my $blen = 64;
>  my $ipad = chr(0x36)x$blen;
>  my $opad = chr(0x5c)x$blen;
>
> I don't know if I ever seen any way in python of created a fixed size
> string. Can anyone show me how to implement the same statements in python?

Certainly, you can create fixed-length strings in python:
>>> n = 7
>>> chr(0x36) * n
'6666666'

> I when python XOR's strings, is it the same as when perl xor's them?
No, XOR is a bitwise operation that does not apply to strings.

>>> 5 ^ 0
5
>>> 5 ^ 0xF
10
>>> 'a' ^ 'b'
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: unsupported operand type(s) for ^: 'str' and 'str'

See also the 'struct' module: http://docs.python.org/lib/module-struct.html




From sumesh.chopra at gmail.com  Fri Sep  1 12:37:46 2006
From: sumesh.chopra at gmail.com (unexpected)
Date: 1 Sep 2006 09:37:46 -0700
Subject: Strange import behavior
Message-ID: <1157128666.851261.55930@i42g2000cwa.googlegroups.com>

Hey guys,

I'm having problems importing a file into my python app. Everytime I
try to define the object specified by this file, i.e,

test = Test(),

It raises an ImportError exception: ImportError: cannot import name
Test.

I've declared it as:

from test import Test (and I've also tried from test import *)

As luck would have it, if I try creating a newfile (say test2) and then
declare the same class as:

from test2 import Test()

It works fine! I tried doing this with the first couple of files, but
then another error crops up for another file giving me this
ImportError...so I'd end up having to re-copy a bunch of files over
again.

I feel like there may be some sort of dependency screw up or
whatever..Is there a command that's like "Python, chill, let's start
from scratch and build this thing"?



From johnjsal at NOSPAMgmail.com  Sat Sep 30 14:33:35 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 14:33:35 -0400
Subject: storing variable names in a list before they are used?
In-Reply-To: <451ea06c$0$14713$c3e8da3@news.astraweb.com>
References: <hQeTg.57$1n3.320@news.tufts.edu>
	<451ea06c$0$14713$c3e8da3@news.astraweb.com>
Message-ID: <451eb97a$0$12859$c3e8da3@news.astraweb.com>

John Salerno wrote:

> Here is what I want to do more specifically:

Ok, I'm sure you all get the idea by now, but here's a simpler way to 
look at it:

Instead of

first_name = wx.TextCtrl(self)
last_name = wx.TextCtrl(self)
job_title = wx.TextCtrl(self)
etc.

and subsequently:

sizer.Add(first_name)
sizer.Add(last_name)
sizer.Add(job_title)
etc.

I want to do something like this:

for name in names:
     name = wx.TextCtrl(self)
     sizer.Add(name)

It's just that I don't know how to handle the "name" variable in the 
"names" list.


From deets at nospam.web.de  Mon Sep 18 11:39:22 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 18 Sep 2006 17:39:22 +0200
Subject: Interact with system command prompt
References: <1158588506.989070.257550@m7g2000cwm.googlegroups.com>
	<4n7ogmF8slojU1@uni-berlin.de>
	<1158590633.382840.307680@h48g2000cwc.googlegroups.com>
	<1158592025.137940.318950@i3g2000cwc.googlegroups.com>
Message-ID: <4n7stbF95ce4U1@uni-berlin.de>

billie wrote:

> Uhm... It seems that IPython got some problems:
> http://ipython.scipy.org/doc/manual/node12.html
> 
> In details:
> 
>>Note that this does not make IPython a full-fledged system shell. In
>>particular, it has >no job control, so if you type Ctrl-Z (under Unix),
>>you'll suspend pysh itself, not the >process you just started.
> 
>>What the shell profile allows you to do is to use the convenient and
>>powerful syntax of >Python to do quick scripting at the command line.


Might be. But it could provide some insight into how to solve your problem.

Diez


From esj at harvee.org  Fri Sep 29 15:34:22 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 15:34:22 -0400
Subject: another distutils question
In-Reply-To: <efjpma$16d$1@sea.gmane.org>
References: <efjmjp$mr2$1@sea.gmane.org> <efjpma$16d$1@sea.gmane.org>
Message-ID: <451D753E.7060707@harvee.org>

Robert Kern wrote:
> Eric S. Johansson wrote:
>> is there anyway I can, in a setup.py file, set  and internal equivalent 
>> to the '--install-scripts' commandline option?
> 
> Please don't. Hard-coding that interferes with the user's decision of where 
> things should go. Only the user should be making that decision, not the package 
> author.

  I understand the concern and if I was making a general purpose 
package, it would be appropriate to not set the path.  But these are 
internal commands that shouldn't pollute /usr/bin for a variety of 
reasons (almost all daemons, friends of daemons and cgi programs).  The 
CGI programs are particularly interesting because they are all 
surrounded by sgid wrappers and I need to put them in a place the 
wrapper can find them and keep them from accidental corruption. 
distutils is not particularly adept at handling such cases.

But the second reason to force the path is to reduce errors at install 
time (i.e. reducing the number of places someone to make a mistake if 
they want to use the application defaults).  Ideally, best of both 
worlds would be enabling application specific override of the internal 
default which, in turn, can be overridden with the commandline setting.

if there is no simple way to do this, I guess I will need add 
functionality to setup.py and move the scripts to the right location 
after they have been put in the wrong one.

---eric




From 71david at libero.it  Thu Sep 14 06:23:17 2006
From: 71david at libero.it (David)
Date: Thu, 14 Sep 2006 12:23:17 +0200
Subject: How can I get the function's caller?
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
	<1158132707.092664.16260@i3g2000cwc.googlegroups.com>
Message-ID: <1bh54jbm2c80o.16pku3s9x2h2f$.dlg@40tude.net>

Il 13 Sep 2006 00:31:47 -0700, John Machin ha scritto:

> David wrote:
>> Inside a function I need to get the function's caller's name. How can I get
>> it?
>>
> 
> Check out the thread "__LINE__ and __FILE__ functionality in Python?"
> (messages posted 2006-0813).

I'll check thankyou! 
Traffic in this NG is so high that is difficult to stay uptodate.

David.


From srikrishnamohan at gmail.com  Fri Sep  8 18:15:37 2006
From: srikrishnamohan at gmail.com (km)
Date: Sat, 9 Sep 2006 03:45:37 +0530
Subject: Building Python Based Web Application
In-Reply-To: <624934630609081457p79f592cfv5240c9b31b7c008c@mail.gmail.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
	<624934630609081457p79f592cfv5240c9b31b7c008c@mail.gmail.com>
Message-ID: <f4cc03640609081515k10fae7ceoda4843bf0c0cd9a8@mail.gmail.com>

Hi,

I use Plone/Zope for and interface it with PostgreSQL . its pretty good.
saves  lot of time. ofcourse the learning curve is steep. Zope uses CSS
heavily and since ur comfortable with it it shouldnt take muchtime building
the site with much less coding in python.

regards,
KM



On 9/9/06, Ramon Diaz-Uriarte <rdiaz02 at gmail.com> wrote:
>
> On 9/8/06, James Stroud <jstroud at mbi.ucla.edu> wrote:
> > Hello All,
> >
> > I am interested in setting up a modest invoicing system for some
> > consulting I am doing. I like the idea of managing this on the web and
> > creating invoices and printing them from a browser. However, I'm not
> > really sure where to start. I've played with some CMS applications, but
> > they seem more for blogging (mamba, wordpress, etc.). Ideally, I would
> > like to interface with mySQL (or whatever the favorite web-flavor
> > database app is these days). I would like to be able to use my python
> > skills.
> >
> > I confident that if I set out to write this from scatch, I will be
> > seriously re-inventing the wheel, perhaps several times over.
> >
> > So, my question is, does anyone know of a book and/or some kind of
> > framework that would make the best sense for what I am describing here?
> > I've heard of Zope, but I would like to make sure its appropriate for
> > the job before I spend 2 or 3 days getting acquainted with it. I'm adept
> > at HTML, python, CSS, python-CGI, and interfacing with mySQL through
> > DBI. I'm sure I could get something to work with these skills, but I
> > want to minimize wheel re-invention as much as possible.
> >
> > Basically, I want a jump start on data-base oriented web development
> > with a focus on applying my python skills.
>
> I think that Karrigell might do what you want, and you can read all
> the (excellent) documentation in a few hours. Otherwise, specially if
> you think you might get deeper into web-based stuff, with more
> complex/special/whatever needs, I'd probably try Pylons (which has
> also very nice and well organized docs). I have no direct experience
> with Django or TG, but I find them "overwhelming", specially compared
> to Karrigell; Zope I find even more overwhelming.
>
> HTH,
>
> R.
>
> > --
> > James Stroud
> > UCLA-DOE Institute for Genomics and Proteomics
> > Box 951570
> > Los Angeles, CA 90095
> >
> > http://www.jamesstroud.com/116
> > --
> > http://mail.python.org/mailman/listinfo/python-list117
> >
>
>
> --
> Ramon Diaz-Uriarte
> Bioinformatics Unit
> Spanish National Cancer Centre (CNIO)
> http://ligarto.org/rdiaz
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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From steve at holdenweb.com  Sat Sep 30 18:09:25 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 23:09:25 +0100
Subject: where the extra space comes from on the stdout
In-Reply-To: <Kr2dnd7zz79dfoPYnZ2dnUVZ_ridnZ2d@comcast.com>
References: <Kr2dnd7zz79dfoPYnZ2dnUVZ_ridnZ2d@comcast.com>
Message-ID: <efmpt2$g6u$1@sea.gmane.org>

alf wrote:
> Hi,
> 
> I can not find out where the extra space comes from. Run following:
> 
> import os,sys
> while 1:
>      print 'Question [Y/[N]]?',
>      if sys.stdin.readline().strip() in ('Y','y'):
>          #do something
>          pass
> 
> $ python q.py
> Question [Y/[N]]?y
>   Question [Y/[N]]?y
>   Question [Y/[N]]?y
>   Question [Y/[N]]?y
>   Question [Y/[N]]?n
>   Question [Y/[N]]?
>   Question [Y/[N]]?
> 
> 
> There is a space evrywhere just before Q
> 
> Any insight?
> 
Yup. When you execute a print statement with a comma at the end it 
doesn't output the space, it simply sets a flag reminding it that there 
should be a space before the next item on the same line. If the next 
character out is a newline then the space flag is reset, but in this 
case the newline was provided by the input, so you get a space at the 
start of the next output.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fanglicheng at gmail.com  Tue Sep 12 00:51:03 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 11 Sep 2006 21:51:03 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158031603.390298.27720@d34g2000cwd.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
Message-ID: <1158036663.669437.194480@i3g2000cwc.googlegroups.com>


MonkeeSage wrote:
> Licheng Fang wrote:
> > Basically, the problem is this:
> >
> > >>> p = re.compile("do|dolittle")
> > >>> p.match("dolittle").group()
> > 'do'
>
> >From what I understand, this isn't python specific, it is the expected
> behavior of that pattern in any implementation. You are using
> alternation, which means "either, or", and you have the shorter
> subexpression first, so the condition is satisfied by just 'do' and the
> matching terminates.
>
> > There's another example:
> >
> > >>> p = re.compile("one(self)?(selfsufficient)?")
> > >>> p.match("oneselfsufficient").group()
> > 'oneself'
>
> Again, I don't think this has anything to do with python. You pattern
> basically means "match 'one' whether it is followed by 'self' or not,
> and whether it is followed by 'selfsufficient' or not". For this
> particular example, you'd want something like
> "one(self)?(sufficient)?".
>
> I think you could construct a pattern that would do what you want in
> python without any problem. If you post a (short) example of your data,
> I'm sure someone could help you with it.
>
> Regards,
> Jordan

Hi, according to these regexp engine discussions, it's NOT a behavior
true to any implementation.

http://www.softec.st/en/OpenSource/DevelopersCorner/RegularExpressions/RegularExpressionEngines.html
http://www.softec.st/en/OpenSource/DevelopersCorner/RegularExpressions/RegularExpressionEngines.html

Python's NFA engine reads along the input string, matching it to the
pattern, and backtracking when needed. By contrast a DFA engine, to my
understanding, constructs a DFA and uses it to munch as many characters
as possible. Maybe it's like this:

Pattern: one(self)?(selfsufficient)?

PYTHON'S NFA ENGINE:

         one         self, none        selfsufficient, none
(start)------->((1))------------>((2))----------------------->((3))

DFA ENGINE:

         one             self
(start)------->((123))------------>((23))
                  |
                  |
                  |  selfsufficient
                   --------------->((3))

I want to know if there is some way to make Python RE behave like grep
does, or do I have to change to another engine?



From aleax at mac.com  Sun Sep  3 11:39:48 2006
From: aleax at mac.com (Alex Martelli)
Date: Sun, 3 Sep 2006 08:39:48 -0700
Subject: Client-side TCP socket receiving "Address already in use"
	upon	connect
References: <edcrms$auj$1@news.uit.no>
	<mailman.10304.1157280160.27775.python-list@python.org>
	<edefl6$10dc$1@news.uit.no> <edeiqj$11ef$1@news.uit.no>
	<mailman.10309.1157291622.27775.python-list@python.org>
Message-ID: <1hl2xuf.1we7p812kbt88N%aleax@mac.com>

Steve Holden <steve at holdenweb.com> wrote:
   ...
> >>set registry key: 
>
>>KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\M
axUserPort
> >>
> >>to a new DWORD value... (5000 - 65534)
> >>The default in XP is 3976 -> http://support.microsoft.com/kb/Q149532

I wonder why (performance under RAM-costrained conditions? but then why
not have this vary depending on available RAM -- complications?)

> Yes, it's the transport layer that puts the socket into the TIME_WAIT state.

Yes, there's a good explanation at
<http://www.developerweb.net/forum/showthread.php?t=2941> (though one
should really study Stevens' "TCP-IP Illustrated" for better
understanding in depth).  Playing with SO_LINGER and/or the MSL is not
recommended unless you're operating only on a network that you entirely
control (particularly in terms of round-trip times and router behavior).

As debated at
<http://www.sunmanagers.org/pipermail/summaries/2006-January/007068.html
>, you may be able to have your clients go into CLOSE_WAIT (instead of
TIME_WAIT) by playing around with "who closes the socket first", and
CLOSE_WAIT might be more transient than the 2*MSL (240 seconds...)
needed for TIME_WAIT on possibly-unreliable networks.  But it's far from
sure that this would gain you much.

Reflecting on the OP's use case, since all connections are forever being
made to the same 16 servers, why not tweak thinks a bit to hold those
connections open for longer periods of time, using a connection for many
send/receive "transactions" instead of opening and closing such
connections all of the time?  That might well work better...


Alex


From aleax at mac.com  Mon Sep  4 15:34:59 2006
From: aleax at mac.com (Alex Martelli)
Date: Mon, 4 Sep 2006 12:34:59 -0700
Subject: Syntax suggestion.
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
	<slrnefhdtt.flm.sybrenUSE@schuimige.stuvel.eu>
	<1157316221.203928.26090@h48g2000cwc.googlegroups.com>
	<1hl3e8m.1gt0sd580nscuN%aleax@mac.com>
	<1157365545.808068.231270@i42g2000cwa.googlegroups.com>
Message-ID: <1hl4rxb.1tept6bun11xgN%aleax@mac.com>

samir <samirbenabid at linuxmail.org> wrote:
   ...
> That depends of your need to such tools. For example if you need to
> copy a file, then, resolve a linear system then chroot and set the
> password as de hexadecimal representation of the hash function of pi
> multiplied by the averge of the solution coordinations +_+, you'll need
> IPython ;)

GVIM (and the normal Python interpreter) work better for me: to perform
such a task, I would always write (and run) a script, of course (the
purpose of the chroot step is somewhat mysterious here, btw).  If I have
to perform a strange and complex task once, it's likely that I will have
to perform some variant of it again in the future, and having the script
around will make it easy to edit and tweak.  Furthermore, having the
script around can be a useful indicator when I'm later trying to
reconstruct exactly what it is that I did.


Alex


From goofyheadedpunk at gmail.com  Tue Sep 12 17:50:44 2006
From: goofyheadedpunk at gmail.com (Brian L. Troutwine)
Date: 12 Sep 2006 14:50:44 -0700
Subject: Help me use my Dual Core CPU!
In-Reply-To: <1158095533.359352.65880@m73g2000cwd.googlegroups.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<1158095533.359352.65880@m73g2000cwd.googlegroups.com>
Message-ID: <1158097844.802951.243420@p79g2000cwp.googlegroups.com>

John Henry wrote:
> I don't know what CPython is but I have developed a Python application
> under Windows that utilize the Dure Core CPU when it's present.

It's the default python implementation, the one you find at python.org.
It happens to be written in C. Other python implementations included
IronPython, PyPy and Jython in .Net, CPython and Java, respectively.



From gagsl-py at yahoo.com.ar  Thu Sep 21 03:09:26 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 04:09:26 -0300
Subject: naming objects from string
In-Reply-To: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
Message-ID: <7.0.1.0.0.20060921035526.0584d7d8@yahoo.com.ar>

At Thursday 21/9/2006 00:59, manstey wrote:

>If I have a string, how can I give that string name to a python object,
>such as a tuple.
>
>e.g.
>
>a = 'hello'
>b=(1234)
>
>and then a function
>name(b) = a
>
>which would mean:
>hello=(1234)
>
>is this possible?

You may use another object as a namespace:

class X: pass
x = X()

a = 'hello'
b = (1,2,3,4)
setattr(x, a, b)

print x.hello # prints (1,2,3,4)
getattr(x, a) # returns the same

but perhaps if you explain better what you want, we can figure out 
how to do that...



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From jon+usenet at unequivocal.co.uk  Sun Sep 24 20:17:20 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 00:17:20 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef5ncc$uus$1@news.albasani.net>
Message-ID: <slrnehe80c.rk8.jon+usenet@snowy.squish.net>

In article <ef5ncc$uus$1 at news.albasani.net>, Georg Brandl wrote:
>> Attributes can be quoted with either single or double quotes. That's what
>> the HTML spec says. cgi.escape doesn't correctly allow for that. Ergo,
>> cgi.escape is broken. QED.
> 
> A function is broken if its implementation doesn't match the documentation.

Or if the design, as described in the documentation, is flawed in some
way.

> As a courtesy, I've pasted it below.
> 
[...]
> 
> Now, do you still think cgi.escape is broken?

Yes.


From thorsten at thorstenkampe.de  Tue Sep 26 17:56:06 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 26 Sep 2006 22:56:06 +0100
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
	<MPG.1f824ba4ccb5f49989687@news.individual.de>
	<4518fba6$1@news.vo.lu>
Message-ID: <MPG.1f83b24d57caa87e98968a@news.individual.de>

* Antoine De Groote (Tue, 26 Sep 2006 12:06:38 +0200)
>Thorsten Kampe wrote:
>> * John Machin (24 Sep 2006 15:32:20 -0700)
>>> Antoine De Groote wrote:
>>>> is there a python equivalent for the ruby %w operator?
>>>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>>>
>>> | >>> "a b c".split()
>>> | ['a', 'b', 'c']
>>>
>>> ... appears to match your single example.
>> 
>> Something wrong with "list('abc')"? Or is it too simple?!
>> 
>> Thorsten
>
>As far as I can tell this works for single characters only. You're not 
>able to split words, as in "one two three".split().

It does satisfy your example in your first posting nevertheless.

Thorsten


From metaperl.jainpushp at gmail.com  Fri Sep  1 14:07:45 2006
From: metaperl.jainpushp at gmail.com (Terrence Brannon)
Date: 1 Sep 2006 11:07:45 -0700
Subject: Incremental Progress Report object/closure?
Message-ID: <1157134065.116944.70270@m79g2000cwm.googlegroups.com>

'lo all, I'm looking for something that gives feedback to the screen
every X iterations, reporting

Time elapsed:  0:00:00   X,XXX,XXX records done. speed XXXX/second.
[Action Label]


Such a thingy is useful when one is cranking away at million record
flat files and one wants to provide feedback to the user lest he bash
away at the interrupt key in fear of his machine being locked up.

All the best mates,
-- meta



From ask at me  Wed Sep 27 00:40:01 2006
From: ask at me (alf)
Date: Wed, 27 Sep 2006 00:40:01 -0400
Subject: re.compile().split(): why it produces empty string as a first element
	of the list
Message-ID: <KZCdnT686dFRlofYnZ2dnUVZ_oGdnZ2d@comcast.com>

Hi,
Let's run following:

 >>> re.compile('(\[.*?\])').split('[aa]bb[11]22')
['', '[aa]', 'bb', '[11]', '22']


Why does it return '' as a first element of the list?

Any insight?

-- 
alf


From leonhard.vogt at gmx.ch  Sat Sep 30 16:50:18 2006
From: leonhard.vogt at gmx.ch (Leonhard Vogt)
Date: Sat, 30 Sep 2006 22:50:18 +0200
Subject: Escapeism
In-Reply-To: <1159642864.799937.247960@h48g2000cwc.googlegroups.com>
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>
	<slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>
	<1159635727.840033.169540@m73g2000cwd.googlegroups.com>
	<mailman.1009.1159638919.10491.python-list@python.org>
	<1159642864.799937.247960@h48g2000cwc.googlegroups.com>
Message-ID: <451ed82a_4@news.bluewin.ch>

> But there is some ambiguity due to the the fact that applying '\7' to
> rawform() yields r'\a' and not r'\7'. So one needs more specification
> for disambiguation using e.g. an extra parameter.
> 
 >>> '\a'=='\7'
True

The two are actually the same thing, so how could a function decide
whether to return '\\a' or '\\7'.

It's like asking the following:
 >>> c = 04
 >>> print rawform(c)
04

 >>> c = 4
 >>> print rawform(c)
4

which is obviously not possible, neither of any use imho.

Leonhard


From manuel at prolink.de  Fri Sep  1 06:45:52 2006
From: manuel at prolink.de (Manuel Bleichner)
Date: Fri, 01 Sep 2006 12:45:52 +0200
Subject: Classes referencing each other
In-Reply-To: <1157105121.594880.59530@m73g2000cwd.googlegroups.com>
References: <mailman.10236.1157100375.27775.python-list@python.org>
	<1157105121.594880.59530@m73g2000cwd.googlegroups.com>
Message-ID: <op.te636qhc58416w@merkur.intern.prolink.de>

Hi, thanks for your answer, too :)

Your solution won't do it, because of reasons I explained
in the answer to Georg Brandl.

> BTW, care to tell us what the connections mean? Applications of
> connected instances of the one class are of course very common, but 50
> classes connected in a cyclic fashion is rather new to me ...

Okay, I didn't want to do this, because some of you would
think I'm crazy, but what the heck :D

I'm programming a browsergame which is split in multiple parts.
There is a core which is running all the time and a cgi client connecting
to it. The core maintains all classes and keeps the game running, while
the client only requests data from it.
The core of course needs to hold all the definitions for the game
(e.g. units, buildings, resources, research) - these are written as
classes.

class EMCenter(Building, Researcher, Constructor, OnLand):
   maxhitpoints = 1000
   researchspeed = 70
   constructspeed = 50
   research_costs = [SmallEM, Weapons, Shields]
   resource_costs = [Iron: 500, Granite: 300, Silicon: 150]
   possible_research = [MediumEM, EMWeapons, EmShockwave]
   possible_constructs = [Razor, Lancer, Stinger]            # these are  
all units

Now when a certain unit should be built, it must be checked if
the requirements are matched.
=> check research_costs and resource_costs
After building it, an instance of the class will be created.
The new object can itself build (=> Constructor) and research
(=> Researcher) the items provided in possible_constructs and
possible_research.

The problem occured when i wanted to define a unit that can
construct a building which itself is able to construct that
unit.

Absolutely overkill for a browsergame, I know, but I like the concept =)


Manuel


From richardb at sailmaker.co.nospam.uk  Tue Sep 12 21:48:19 2006
From: richardb at sailmaker.co.nospam.uk (Richard Buckle)
Date: Wed, 13 Sep 2006 02:48:19 +0100
Subject: Dice gen and analyser script for RPGs: comments sought
References: <050920060217482624%richardb@sailmaker.co.nospam.uk>
	<7xac5d32uu.fsf@ruckus.brouhaha.com>
Message-ID: <130920060248196990%richardb@sailmaker.co.nospam.uk>

Paul Rubin <http://phr.cx at NOSPAM.invalid> wrote 

(re <http://www.sailmaker.co.uk/newfiles/dice.py>)

> I looked at this for a minute

Thanks for taking the time to look over it; I greatly appreciate it!

> and found it carefully written but somewhat hard to understand. 

Obviously, as the author, I have a blind spot about others
understanding it, but I always strive for my code to be self-commenting
and understandable at first sight, so I would genuinely welcome
feedback on which parts are difficult to understand and need more
commenting. 

Perhaps it is insufficient commenting of the implementations of the
various subclasses of class Dice? I admit /they/ get a but funky in
places.

> I think it's maybe more OOP-y than
> Python programs usually are; perhaps it's Java-like.  

That's interesting: while my background is certainly more OO than
functional, Java is the language I use least. Certainly I relish the
freedom to mix OO, functional and procedural paradigms that you get
with Python, so if there are ways in which that mixture can improve
dice.py, please enlighten me!

On the other hand, is "being more OOP-y than Python programs usually
are" a bad thing in itself, if the object analysis is cleanly designed?

> There are some
> efficiency issues that would be serious if the code were being used on
> large problems, but probably no big deal for "3D6" or the like.  In
> particular, you call histogram.numSamples() in a bunch of places and
> each call results in scanning through the dict.  

A good point which I did consider, however after practical tests I
ruled in favour of code simplicity for the case in hand, while being
careful to leave the Histogram class open to optimisations such as you
describe via subclassing. 

An earlier draft of the Histogram class did indeed have each method do
a single pass through the dict, accumulating what is now numSamples(),
sigma() and sigmaSquared() in local variables. But in practice I found
that for my problem domain, even a 'large' problem would have
relatively few histogram buckets, and computing the summary statistics
for the histogram took a /miniscule/ amount of time compared to the
time taken by generating the data. 

On that basis I refactored the Histogram class to follow the "once and
only once" coding principle, resulting in a much clearer and more
concise Histogram class, with very simple and natural code that any
high-school statisician can immediately see is correct. I found no
measurable perfomance hit.

> You might want to cache this value in the histogram instance.  

On the same basis as above, I decided against caching any results in
the Histogram class, preferring simplicity of code to the additional
logic that would be required to manage cache invalidation upon arrival
of new samples. 

I've learned the hard way that caching, while a dramatic optimisation
in the right place, introduces a lot of complexity and pitfalls (even
more so in multi-threaded scenarios), so these days I only do it when
performance analysis reveals the need.

Of course, for histograms with huge numbers of buckets, there may well
be mileage in subclassing the Histogram class to implement the above
optimisations, and I think the class is sufficiently cleanly designed
to facilitate that.

> Making histogram a subclass of dict also seems a little bit peculiar.

Why? Genuine question. Keep in mind that I might want to re-use the
Histogram class for cases where the buckets may be floating point, so I
can't just use a vector.

I wanted a mapping of bucket->frequency with an easy way to add a new
sample by incrementing the frequency, so dict seemed a natural choice.
I am of course open to better ideas!

> You might find it more in the functional programming spirit to use
> gencomps rather than listcomps in a few places:
> 
>         return sum([freq * val for val, freq in self.items()])
> becomes
>         return sum((freq * val) for val, freq in self.iteritems())

Nice: thanks for making me aware of gencomps! 

I agree that they're better, but when at home I'm on Mac OS X and so
stuck with Python 2.3 unless I engage in the necessary shenanigans to
slap Python 2.4 onto Mac OS X 10.4.7. Yes, I know how to do it, I've
done it before, but it's a PITA and I don't want to deal with it any
more. 

Moreover I want my code to run on vanilla installations of Mac OS X
10.4.x, so I just put up with it and code to Python 2.3.

I'm on Apple's developer program, so if anyone has a Radar bug number I
can cite while requesting they pull their socks up and ship Python 2.4
with the OS, just let me know and I'll cite it to Apple. 

Richard.


From afa at neuf.fr  Mon Sep  4 16:41:13 2006
From: afa at neuf.fr (Amaury Forgeot d'Arc)
Date: Mon, 04 Sep 2006 22:41:13 +0200
Subject: py2exe and libxml
In-Reply-To: <mailman.10340.1157387262.27775.python-list@python.org>
References: <mailman.10340.1157387262.27775.python-list@python.org>
Message-ID: <edi30s$ll7$1@talisker.lacave.net>

Laszlo Nagy a ?crit :
> 
> I wrote a little win32 console application that uses libxml2. It is 
> working fine. If I create an .exe version, I get this error when I try 
> to start the program:
> 
> Traceback (most recent call last):
>  File "MyProgram.py", line 3, in ?
>  File "mylib\item.pyc", line 5, in ?
> ImportError: dynamic module does not define init function (initlibxml2)
> 
> What is wrong here?
> Thanks
> 

A quick Google search reveals a thread in the py2exe-users list:

http://aspn.activestate.com/ASPN/Mail/Message/py2exe-users/3180430

It seems a regression since py2exe 0.6.5, already corrected in CVS trunk.
And according to another post, version 0.6.3 works fine:
http://permalink.gmane.org/gmane.comp.python.py2exe/1502

Hope this helps,

-- 
Amaury


From ilias at lazaridis.com  Fri Sep 22 14:29:04 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 22 Sep 2006 11:29:04 -0700
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <mailman.469.1158942921.10491.python-list@python.org>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
	<mailman.451.1158926238.10491.python-list@python.org>
	<ef0uur$aa1$1@mouse.otenet.gr>
	<1158940317.354847.323490@h48g2000cwc.googlegroups.com>
	<mailman.469.1158942921.10491.python-list@python.org>
Message-ID: <1158949744.021023.14280@h48g2000cwc.googlegroups.com>

Steve Holden wrote:
> Paul Boddie wrote:
> > Ilias Lazaridis wrote:
> [...]
> >>Have those old style classes any benefits?
> >
> >
> > That you don't have to write the bizarre conceptual accident that is
> > "(object)" when declaring a "top-level" class?
> >
> Though of course the easiest way to enforce your classes to new style is
> to begin each module with
>
> __metaclass__ = type

I assume placing this in the central site import (e.g.
sitecustomize.py) would collapse python? (I don't want to try it, maybe
someone has an isolated instance available for trials).

>   >>> __metaclass__ = type
>   >>> class X: pass
>   ...
>   >>> X
> <class '__main__.X'>
>   >>> X()
> <__main__.X object at 0x186c6f0c>
>   >>> x = X()
>   >>> isinstance(x, object)
> True
>   >>> type(x), type(X)
> (<class '__main__.X'>, <type 'type'>)
>   >>>



From jimburton1 at gmail.com  Fri Sep 29 08:57:39 2006
From: jimburton1 at gmail.com (jimburton)
Date: 29 Sep 2006 05:57:39 -0700
Subject: File I/O
In-Reply-To: <4o4eipFcp21dU1@uni-berlin.de>
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
	<1159527353.447436.107610@i42g2000cwa.googlegroups.com>
	<4o4eipFcp21dU1@uni-berlin.de>
Message-ID: <1159534659.445774.230620@i3g2000cwc.googlegroups.com>


Diez B. Roggisch wrote:
> Kirt wrote:
>
> >
> > jimburton wrote:
> >> Kirt wrote:
> >> > Hi! I need some help in file I/O
> >> >
> >> > I have an xml file..
> >> [snip]
> >> See http://diveintopython.org/xml_processing/
> >
> > i dont wanna parse the xml file..
>
> If you play soccer, do you insist on playing with a baseball bat?
> 
I've been known to open a bottle of wine with a pencil. Works fine.



From edreamleo at charter.net  Fri Sep  8 08:57:46 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Fri, 8 Sep 2006 07:57:46 -0500
Subject: ANN: Leo 4.4.1.1 final released
Message-ID: <6OdMg.1075$fK7.833@newsfe03.lga>

Leo 4.4.1.1 final                                       September 3, 2006

Leo 4.4.1.1 final is available at:
http://sourceforge.net/project/showfiles.php?group_id=3458&package_id=29106

Leo 4.4.1.1 corrects a last-minute unicode bug in Leo 4.4.1.
This version also adds the new slideshow plugin.

Leo is a text editor, data organizer, project manager and much more. See:
http://webpages.charter.net/edreamleo/intro.html

The highlights of Leo 4.4.1:
----------------------------
- Leo outputs decorators correctly, provided that the decorator is not a Leo 
directive.
- A new colorizer plugin controlled by jEdit language description files.
- A new shadow files plugin that allows derived files not to have sentinel 
lines.
- Multiple editors in Leo's body pane.
- Search commands now support regex replace patterns: \1, \2, etc.
- Support for external debuggers: see 
http://webpages.charter.net/edreamleo/debuggers.html
- The scripting plugin now creates a Debug Script button.
- Several new commands including run-unit-test, python-help, 
toggle-invisibles,
  and scroll-outline-left/right.
- The help-for-command commands now contains information for almost all 
commands.
- A new shortcut_button plugin.

Quote of the month:
-------------------
Thanks for creating the most useful and amazing application that
I've come across in years. I use Leo every day.

Links:
------
4.4.1:    http://webpages.charter.net/edreamleo/new-4-4-1.html
4.4:      http://webpages.charter.net/edreamleo/new-4-4.html
Leo:      http://webpages.charter.net/edreamleo/front.html
Home:     http://sourceforge.net/projects/leo/
Download: http://sourceforge.net/project/showfiles.php?group_id=3458
CVS:      http://leo.tigris.org/source/browse/leo/
Quotes:   http://webpages.charter.net/edreamleo/testimonials.html

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From sjmachin at lexicon.net  Sat Sep 23 19:13:16 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 16:13:16 -0700
Subject: Need compile python code
In-Reply-To: <1159049592.717174.10280@d34g2000cwd.googlegroups.com>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
	<1159039498.616908.88550@d34g2000cwd.googlegroups.com>
	<1159042393.683184.111680@h48g2000cwc.googlegroups.com>
	<1159049592.717174.10280@d34g2000cwd.googlegroups.com>
Message-ID: <1159053196.702862.302740@d34g2000cwd.googlegroups.com>


mistral wrote:
> <various_others> ?????(?):

There seems to be a rather large communication gap. Consider asking
your question in a Russian-speaking Python-related forum, for example:
http://zope.net.ru/

Regards,
John



From JohnRoth1 at jhrothjr.com  Mon Sep 25 10:03:49 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 25 Sep 2006 07:03:49 -0700
Subject: unicode, bytes redux
In-Reply-To: <mailman.552.1159166294.10491.python-list@python.org>
References: <mailman.552.1159166294.10491.python-list@python.org>
Message-ID: <1159193029.761724.76890@i42g2000cwa.googlegroups.com>


willie wrote:
> (beating a dead horse)
>
> Is it too ridiculous to suggest that it'd be nice
> if the unicode object were to remember the
> encoding of the string it was decoded from?
> So that it's feasible to calculate the number
> of bytes that make up the unicode code points.
>
> # U+270C
> # 11100010 10011100 10001100
> buf = "\xE2\x9C\x8C"
>
> u = buf.decode('UTF-8')
>
> # ... later ...
>
> u.bytes() -> 3
>
> (goes through each code point and calculates
> the number of bytes that make up the character
> according to the encoding)

Yup, it's a dead horse. As suggested elsewhere in
the thread, the unicode object is not the proper
place for this functionality. Also, as suggested,
it's not even the desired functionality: what's really
wanted is the ability to tell how long the string
is going to be in various encodings.

That's easy enough to do today - just encode the
darn thing and use len(). I don't see any reason
to expand the language to support a data base
product that goes out of its way to make it difficult
for developers.

John Roth



From elpX at adsihqX.com  Wed Sep  6 21:04:00 2006
From: elpX at adsihqX.com (Dr. Pastor)
Date: Wed, 06 Sep 2006 18:04:00 -0700
Subject: Path?
In-Reply-To: <1157563909_62823@sp6iad.superfeed.net>
References: <1157563909_62823@sp6iad.superfeed.net>
Message-ID: <1157590328_66573@sp6iad.superfeed.net>

Many thanks, Sir.

----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From tuomas.vesterinen at pp.inet.fi  Mon Sep 25 14:26:51 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Mon, 25 Sep 2006 18:26:51 GMT
Subject: gtk.Entry Colors
In-Reply-To: <1159205073.814981.231690@d34g2000cwd.googlegroups.com>
References: <L8wRg.16872$mj5.1449@read3.inet.fi>
	<1159121638.446784.137070@b28g2000cwb.googlegroups.com>
	<dNKRg.27$S_5.15@read3.inet.fi>
	<1159205073.814981.231690@d34g2000cwd.googlegroups.com>
Message-ID: <LbVRg.356$S_5.268@read3.inet.fi>

MonkeeSage wrote:
> Tuomas wrote:
> 
>>Yes, I read the reference before posting here. I tried something like:
> 
> 
> Hi Tuomas,
> 
> I didn't mean to say that you hadn't read the docs (I had a hard time
> finding the right methods in the docs too, even though I know the
> methods); I just wanted to give you the references so you could see the
> method signatures and the other gdk.Color options. :)


I didn't meant to blame you of blaming me either. I had worked with this 
problem a couple of days and your advice helped me to solve it in ten 
minutes. So I am very grateful.

Nice thing this Python :)

Tuomas

> Regards,
> Jordan
> 


From kylotan at gmail.com  Fri Sep  8 11:15:19 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 8 Sep 2006 08:15:19 -0700
Subject: Javadoc style python manual?
In-Reply-To: <1157726433.091404.124130@d34g2000cwd.googlegroups.com>
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
	<1157726433.091404.124130@d34g2000cwd.googlegroups.com>
Message-ID: <1157728519.331486.198060@m79g2000cwm.googlegroups.com>

Michele Simionato wrote:
> Ben Sizer wrote:
> > I agree that the Python docs aren't quite as effective as reference
> > material due to the lack of simple function and method lists though.
>
> http://docs.python.org/lib/modindex.html, pydoc and ipython are more
> than enough for me.

modindex is comprehensive but too 'flat'. Sometimes you want to see all
of one object's methods and properties listed together.

I was unaware of pydoc until this thread; its existence seems to be
buried, somewhat. Looking at pydoc.org (assuming that is a good example
of it in use), it looks more like what the original poster and I might
want, but sadly it's still very inconsistent, with many things
undescribed.

-- 
Ben Sizer



From gregpinero at gmail.com  Tue Sep 19 16:56:03 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Tue, 19 Sep 2006 16:56:03 -0400
Subject: How to get a Fix to an Abandoned Project?
Message-ID: <312cfe2b0609191356r12ef27bbw20f72b95db016460@mail.gmail.com>

Hi there,

I'm hoping this is at least somewhat on topic for this list.  I'm not
sure where else to ask.

Here's the story, I was a happy user of pydelicious
(http://deliciouspython.python-hosting.com/) for a few beautiful
months.  Then there was a del.icio.us API change
(http://blog.del.icio.us/blog/2006/08/security_everyb.html) and
pydelicious broke
(http://deliciouspython.python-hosting.com/ticket/363).

After repeated failed attempts to contact the author, I dive in and
fix it myself (just changing URI's really).  So now I have the fixed
code and I'd like to update the project so others can use it, but I
can't seem to login to the trac page to change the code?  Just
wondering if there's some obvious way to change the source code, or
register?  Otherwise any other advice is welcome.  Should I just post
the code somewhere else, etc?

Thanks,

-- 
Gregory Pi?ero
Chief Innovation Officer
Blended Technologies
(www.blendedtechnologies.com)


From jjl at pobox.com  Tue Sep 19 14:25:39 2006
From: jjl at pobox.com (John J. Lee)
Date: 19 Sep 2006 19:25:39 +0100
Subject: Mechanoid Web Browser - Recording Capability
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
	<878xkjxrs2.fsf@pobox.com>
	<1158542822.685166.317930@i42g2000cwa.googlegroups.com>
Message-ID: <upsdr3e8s.fsf@pobox.com>

"Seymour" <seymour.morris at gmail.com> writes:

> Somehow I had the notion that Mechanize was a Pearl script.

mechanize the Python module started as a port of Andy Lester's Perl
module WWW::Mechanize (in turn based on Gisle Aas' libwww-perl), and
on some very high level has "the same" conceptual interface, but most
of the details (internal structure, features and bugs ;-) are
different to LWP and WWW::Mechanize due to the integration with
urllib2, httplib and friends, and with my own code.  Most parts of the
code are no longer recognisable as having originated in LWP (and of
course, lots of it *didn't* originate there).


John



From martin at v.loewis.de  Wed Sep 27 12:52:28 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 27 Sep 2006 18:52:28 +0200
Subject: Python 2.5 Installation and Tkinter
In-Reply-To: <1159371444.238494.210200@m7g2000cwm.googlegroups.com>
References: <1158958988.315609.242040@h48g2000cwc.googlegroups.com>
	<1158966487.752158.90870@m7g2000cwm.googlegroups.com>
	<4514d08d$0$31765$9b622d9e@news.freenet.de>
	<1159371444.238494.210200@m7g2000cwm.googlegroups.com>
Message-ID: <451aac4d$0$11944$9b622d9e@news.freenet.de>

milan_sanremo schrieb:
> gcc -shared
> build/temp.solaris-2.10-i86pc-2.5/export/home/rhancock/download/install/Python-2.5/Modules/_tkinter.o
> build/temp.solaris-2.10-i86pc-2.5/export/home/rhancock/download/install/Python-2.5/Modules/tkappinit.o
> -L/usr/openwin/lib -L/usr/local/lib -ltk8.4 -ltcl8.4 -lX11 -o
> build/lib.solaris-2.10-i86pc-2.5/_tkinter.so
> *** WARNING: renaming "_tkinter" since importing it failed: ld.so.1:
> python: fatal: libtk8.4.so: open failed: No such file or directory
> running build_scripts
> creating build/scripts-2.5
> 
> Yet a ls of /usr/loca/lib shows the file exists:
> drwxr-xr-x   4 root     root         512 Sep 27 03:37 .
> drwxr-xr-x  10 root     root         512 Sep 27 03:28 ..
> -rw-r--r--   1 root     root         626 Sep 27 02:31 charset.alias
> -r-xr-xr-x   1 root     root      786320 Sep 27 03:35 libtcl8.4.so
> -rw-r--r--   1 root     root        2292 Sep 27 03:35 libtclstub8.4.a
> -r-xr-xr-x   1 root     root      977116 Sep 27 03:37 libtk8.4.so
> -rw-r--r--   1 root     root        3548 Sep 27 03:37 libtkstub8.4.a
> drwxr-xr-x   8 root     root         512 Sep 27 03:35 tcl8.4
> -rw-r--r--   1 root     root        7254 Sep 27 03:35 tclConfig.sh
> drwxr-xr-x   5 root     root        1024 Sep 27 03:37 tk8.4
> -rw-r--r--   1 root     root        3566 Sep 27 03:37 tkConfig.sh
> 
> LD_RUN_PATH is set to /usr/local/lib.
> 
> I'm running this as root.  I've built numerous programs ofver the last
> five days, all without a problem.  What am I missing on the Tkinter
> inclusion?

Not sure whether it's a typo: If the file is in "/usr/loca/lib", you
should set LD_RUN_PATH to that, not "/usr/local/lib".

Are you sure LD_RUN_PATH is exported?

I would do "file /usr/local/lib/libtk8.4.so", to see whether it's
a "good" file.

Then I would invoke the linker line manually (so that _tkinter.so
doesn't get removed), and then do

ldd -s build/lib.solaris-2.10-i86pc-2.5/_tkinter.so

to see how it tries to resolve shared libraries.

HTH,
Martin


From onurb at xiludom.gro  Mon Sep 11 05:06:13 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 11 Sep 2006 11:06:13 +0200
Subject: Is there a way to take a priori knowledge out of field
	definitions?
In-Reply-To: <mailman.240.1157956458.5279.python-list@python.org>
References: <mailman.240.1157956458.5279.python-list@python.org>
Message-ID: <45052707$0$1778$636a55ce@news.free.fr>

Hendrik van Rooyen wrote:
> Hi,
> 
> It is possible to build a system where the fields are "self defining" : -
> 
> One way is to keep a dictionary of tags and descriptors, and to keep "the data"
> in a dictionary using the same tags as keys, with values - an oversimplified
> example:
> 
> DefinitionDict = {1:'Quantity',2:'Price',3:'Value'}
> 
> DataItemDict = {1:10,2:3.50,3:35.00}
>
> This is conceptually not much different to putting headers on columns in a
> database table or a spreadsheet, with the data item being a row, or to HT or
> XML.
> 
> Now obviously the definitions need not be single valued strings, but could be
> multivalues, for use at different times, such as for gui displaying, for
> printing, etc, and could also hold type information, as most databases do.
> 
> Up to this point, there is no a priori human knowledge mixed in with the data
> that has not been written down.
> 
> However, when we want to make say a validation rule, such as Quantity times
> Price must equal Value, then we are using a priori knowledge about the data to
> formulate this.
> 
> At this point, if a routine is written to check that DataItemDict[1] multiplied
> by DataItemDict[2] is indeed equal to DataItemDict[3], then we are casting the
> meanings into stone, and the flexibility of the structure is to a large extent
> lost.
> 
> Now if I want to make a system where these sort of rules, as well as more
> complicated ones, are also definable - Is there a way to do it simply and
> cleanly - a way to expand the DefinitionDict so that it contains all of what we
> know about the structure and relationships of and between the items of data?

Looks a lot like a RDBMS...

> It seems to me that if this could be done, then it could be used to dynamically
> generate the routines needed for validation, update, etc...
> 
> But my brain strains when I try to think about how to do it...

You may want to have a look at the descriptor protocol and packages like
traits and FormEncode.



-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From haraldarminmassa at gmail.com  Wed Sep  6 09:26:58 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 6 Sep 2006 06:26:58 -0700
Subject: accessing the DHCP Server Management API
Message-ID: <1157549218.271309.166530@h48g2000cwc.googlegroups.com>

Hello,

I need to get a list of active leases on a windows dhcp server.

Experts from Microsoft statet:

""""
A: Go to the Address leases of each scope in the DHCP snap-in and dump
the leases to a text file from the DHCP server snap-in. The text file
gives you all the information for every active lease. You might also
want to query the DHCP server management API:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dhcp/dhcp/dhcpenumsubnetclients.asp.

""""
(http://www.microsoft.com/technet/community/chats/trans/windowsnet/wnet_05_0303.mspx)

Option A is not really an option for programmatic access :)

So my question: Has anyone accessed the DHCP Server Management API from
Python before? I googled my browser smoking with hopes that that API
might be accessible via WMI, but to no avail for me.

Any recommendation how to access this information via Python? pyDHCPSMA
anyone?

Harald



From outstretchedarm at hotmail.com  Fri Sep  8 19:23:25 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 8 Sep 2006 16:23:25 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
Message-ID: <1157757805.301359.25220@p79g2000cwp.googlegroups.com>

thanks for the suggestions, fellas



From CedricCicada at gmail.com  Wed Sep  6 16:57:51 2006
From: CedricCicada at gmail.com (CedricCicada at gmail.com)
Date: 6 Sep 2006 13:57:51 -0700
Subject: Data sticking around too long
In-Reply-To: <1157575592.588966.17100@m73g2000cwd.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
	<1157574434.643964.218110@m73g2000cwd.googlegroups.com>
	<1157575592.588966.17100@m73g2000cwd.googlegroups.com>
Message-ID: <1157576271.093483.74600@i42g2000cwa.googlegroups.com>

Greetings again!

There's something more to determining whether a class member is a class
variable or an instance variable.  Here's a slightly expanded version
of my last script:

class ScannerCommand:
    taskName = ''
    scanList = []
    number = 0

    def __init__(self, data):
        pass
#        self.scanList = []
#        self.scanList.append(data)

if __name__ == '__main__':
    c1 = ScannerCommand("c1")
    c2 = ScannerCommand("c2")
    c1.number = 1
    c2.number = 2
    c1.scanList.append("One")
    c2.scanList.append("Two")
    print "C1: " + str(c1.number)
    for data in c1.scanList:
        print "   " + data
    print "C2: " + str(c2.number)
    for data in c2.scanList:
        print "   " + data

And here's the output:
C1: 1
   One
   Two
C2: 2
   One
   Two

Here, the two instances share the scanList list, as expected from
previous discussions, but they have their own copies of the number
variable.  Why is scanList a class variable but number an instance
variable here?

Good night, all!

Rob Richardson
RAD-CON, Inc.
Bay Village, OH



From fabiofz at gmail.com  Sat Sep 16 12:27:46 2006
From: fabiofz at gmail.com (Fabio Zadrozny)
Date: Sat, 16 Sep 2006 13:27:46 -0300
Subject: Looking for a python IDE
In-Reply-To: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <cfb578b20609160927s76e7c598nc9d65c52724062e2@mail.gmail.com>

On 15 Sep 2006 23:31:27 -0700, alfaeco at gmail.com <alfaeco at gmail.com> wrote:
>
> Hello
>
> I am looking for a good IDE for Python. Commercial or Open Software.
>


 Check http://wiki.python.org/moin/IntegratedDevelopmentEnvironments

I reccomend Pydev (open source) + Pydev extensions (commercial).

Cheers,

Fabio
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From MonkeeSage at gmail.com  Sat Sep 23 08:31:44 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 05:31:44 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <1159014271.576863.199290@h48g2000cwc.googlegroups.com>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net>
	<1158959361.458232.278660@h48g2000cwc.googlegroups.com>
	<ef37tf$5hj$4@lust.ihug.co.nz>
	<1159014271.576863.199290@h48g2000cwc.googlegroups.com>
Message-ID: <1159014704.869435.243260@h48g2000cwc.googlegroups.com>


MonkeeSage wrote:
> > Why not express everything in Conjunctive Normal Form?
>
> [snip]

Oh, you meant the actual form. Duh! Yeah, that would work. For some
reason I was thinking you were asking why I didn't implement the
standard symbols, sorry.

Regards,
Jordan



From skip at pobox.com  Tue Sep 12 11:03:41 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 12 Sep 2006 10:03:41 -0500
Subject: best way of testing a program exists before using it?
In-Reply-To: <slrnegdeds.5j8.nick@irishsea.home.craig-wood.com>
References: <mailman.324.1158050420.5279.python-list@python.org>
	<slrnegdeds.5j8.nick@irishsea.home.craig-wood.com>
Message-ID: <17670.52301.27229.70042@montanaro.dyndns.org>

    Nick> Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
    >> [Nick Craig-Wood]
    >> 
    >> | Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
    >> | >          if os.path.isfile (filepath):
    >> | >            print filepath
    >> | 
    >> | You might get a more accurate result using
    >> | 
    >> |   os.access(filepath, os.X_OK)
    >> | 
    >> | instead of
    >> | 
    >> |   os.path.isfile(filepath)
    >> | 
    >> | Which checks the file is executable

Just picking up this thread late.  Note that access() doesn't do what you
want unless your real and effective user ids are the same.  Granted, that's
the case most of the time, but not always...

Skip


From bignose+hates-spam at benfinney.id.au  Thu Sep 21 02:35:20 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 21 Sep 2006 16:35:20 +1000
Subject: naming objects from string
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
Message-ID: <87u031zpzr.fsf@benfinney.id.au>

"manstey" <manstey at csu.edu.au> writes:

> If I have a string, how can I give that string name to a python
> object, such as a tuple.

The thing I'd like to know before answering this is: how will you be
using that name to refer to the object later?

-- 
 \     "If you ever catch on fire, try to avoid seeing yourself in the |
  `\        mirror, because I bet that's what REALLY throws you into a |
_o__)                                          panic."  -- Jack Handey |
Ben Finney



From just at xs4all.nl  Sat Sep 23 03:06:02 2006
From: just at xs4all.nl (Just)
Date: Sat, 23 Sep 2006 09:06:02 +0200
Subject: Doctests for nested functions
References: <1158972773.947401.326850@i42g2000cwa.googlegroups.com>
Message-ID: <just-8C1BAD.09060223092006@news1.news.xs4all.nl>

In article <1158972773.947401.326850 at i42g2000cwa.googlegroups.com>,
 bearophileHUGS at lycos.com wrote:

> Can doctests be added to nested functions too? (This can be useful to
> me, I use nested function when I don't have attributes that I have to
> remember, but I want to split the logic in some subparts anyway).

I think we had that discussion before, but that's not what nested 
functions are for (in Python). Use modules for that. Also solves your 
doctest problem nicely.

Just


From axel.fix at sitqsystems.com  Fri Sep  1 05:14:56 2006
From: axel.fix at sitqsystems.com (axel)
Date: 1 Sep 2006 02:14:56 -0700
Subject: Jython: PyException toString() is empty
Message-ID: <1157102095.931883.44730@m79g2000cwm.googlegroups.com>

Hello,

I have the problem to get informations about script errors. And I have
found that I get a PySyntaxError if the script is wrong and if I use
for instance an unknown name I get PyException. But I don't get any
information, not even a string.
How can I get detailed informations about the error?

Thanks, axel



From rdiaz02 at gmail.com  Fri Sep 15 03:47:30 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Fri, 15 Sep 2006 09:47:30 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <4509D2E4.9060503@freakmail.de>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
	<4509D2E4.9060503@freakmail.de>
Message-ID: <624934630609150047w74c7d752i9fc9020044c76bb1@mail.gmail.com>

On 9/15/06, Wildemar Wildenburger <wildemar at freakmail.de> wrote:
> Ramon Diaz-Uriarte wrote:
> >> c) can run programs right from within
> >
> > But of course. And, contrary to some others (e.g., JEdit, which I
> > think forces you to use Jython, so you are stuck with Python 2.1 for
> > now) you use the current python interpreter you have installed.
>
> Wrong. But so terribly wrong ;). Jython is not at all needed to use
> python with jEdit. I think the only reason to actually use Jython in

OK, so I stand corrected. However:

- I did not want to imply that you need Jython for editing Python with
JEdit. JEdit can eidt Python files without Jython, of course.

- I was referring to executing arbitrary sections of a Python file in
a Python interpreter in an "integrated way". When I tried JEdit, I
think that Jython was the way to go. (And I think this was also the
case for a while, at least to judge from D. Metrz's review
http://www-128.ibm.com/developerworks/library/l-cpyide/


> The console plugin (probably THE most useful of the pack) gives you a
> system shell and means to start compilers/interpreters based on your

But isn't this a "generic console": you go to the console, and then
type "python2.3" or "python2.4" or whatever? How do you send arbitrary
selections of Python code from the file you are editing to this shell?
Is there a way to mark a section of code and have it evaluated by the
python interpreter? Or a function definition?


R.


From mcfletch at vrplumber.com  Tue Sep 26 10:50:14 2006
From: mcfletch at vrplumber.com (Mike C. Fletcher)
Date: Tue, 26 Sep 2006 10:50:14 -0400
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <45193E26.9020105@vrplumber.com>

walterbyrd wrote:
> If so, I doubt there are many. 
>
> I wonder why that is?
>   
I've now used Python in every job I've had for the last 10 years.  
Started off with web-sites for a few months, then writing 
VRML-processing libraries to piece together and massage virtual worlds 
(not a *lot* of jobs there).  After that worked on a piece of 
Cable-system SNMP monitoring software (again, not a *lot* of jobs in 
that).  After that billing/provisioning systems for VoIP (you really 
only need one).  The last two companies (one of which I own, one in 
which I was a partner) were python-only shops.

PyGTA (Toronto Python User's Group), which is a fairly large user-group, 
seems to be about 60% (off-the-cuff estimate) paid Pythonistas, with 
some people picking it up for filling in corners and others spending all 
day working on it.  The paid positions tend (like most programming 
positions in less-well-known general-purpose languages) to be 
programming + X for values of X which are a problem domain having an 
obscure nature.  That is, boutique/bespoke development that requires 
some specialisation such that the customer is willing to go for whatever 
language is suitable and gets the job done.

Regarding Java from one of the previous comments (and this is a cynical 
moment here, I'm really a far more positive person, just ignore this):

    There are still lots of jobs in Java, just as there are still lots
    of jobs in COBOL.  Kids in the know (i.e. who *love* programming,
    rather than just wanting a job) going into university are minimising
    their Java exposure so that they don't box themselves into the
    big-old-company environments that have locked themselves into Java
    while everyone else moves onto the more dynamic languages/platforms.

    Job security and easy availability is not the be-all and end-all of
    happiness in life.  That said, if you know anyone who "just wants a
    job", please, push them at Java, someone has to spend the next 30
    years maintaining the Struts and J*EE sites people are putting
    together today in all those big institutions.

Have fun,
Mike

________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com



From http  Fri Sep 29 09:29:29 2006
From: http (Paul Rubin)
Date: 29 Sep 2006 06:29:29 -0700
Subject: There's another Timbot on the loose!
Message-ID: <7xbqoyby2u.fsf_-_@ruckus.brouhaha.com>

http://web.cecs.pdx.edu/~mpj/timbot/index.html


From http  Wed Sep 13 03:40:20 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 00:40:20 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<7x8xkol0n9.fsf@ruckus.brouhaha.com>
	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>
Message-ID: <7xzmd4jjtn.fsf@ruckus.brouhaha.com>

"Simon Wittber" <simonwittber at gmail.com> writes:
> I can't see how subprocess.Popen can replace a fork. Using a manually
> started process is not really viable, as it does not automatically
> share pre-built (read-only) data between the processes. If it can, I'd
> really like to know how...

Either with sockets or mmap.


From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 08:02:11 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 14:02:11 +0200
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <slrnehi5m3.o3d.sybrenUSE@schuimige.stuvel.eu>

walterbyrd enlightened us with:
> If so, I doubt there are many. 
>
> I wonder why that is?

www.uwklantprofiel.nl and www.uwpensioenanalyse.nl, both systems are
written in Python, although the website of the former is still in PHP.
It'll be Python soon, too. I've created both systems.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From jjl at pobox.com  Wed Sep 27 15:01:24 2006
From: jjl at pobox.com (John J. Lee)
Date: 27 Sep 2006 20:01:24 +0100
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
Message-ID: <uslid16d7.fsf@pobox.com>

"Michele Simionato" <michele.simionato at gmail.com> writes:

> John Salerno wrote:
> > But what if you are an expert Python program and have zero clue about
> > other languages?
> 
> Python is not a trivial language (think of generators, decorators,
> metaclasses, etc)
> If you can master it, you can master even other languages, so I would
> hire somebody
> who knows Python only.  Notice that by "knowing Python" I mean also
> knowing its
> standard library and the most common Python third party libraries (GUI
> toolkits, XML toolkits, SQL libraries, twisted, etc. etc.)

It's interesting that, thinking about it, I think lots of the
technical knowledge used on a daily basis (doing mostly Python/SQL/JS
etc. in my case) fits into neither the "language" nor "library"
category, nor easily into most of the other technical categories one
hears people use.

ISTM that there's a vast amount of mostly-tacit knowledge about the
way things work, and they way they should work, good practices, design
techniques, rules of thumb, Bad Ideas ;-), etc. etc. that good
programmers do have and bad or inexperienced programmers don't.


John



From hpsekhon at googlemail.com  Tue Sep 12 08:30:47 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Tue, 12 Sep 2006 13:30:47 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <9afea2ac0609111050n2b5d6413uc6aabc0a46bbe9af@mail.gmail.com>
References: <45057B5E.7010306@googlemail.com> <ee3urn$ane$1@sea.gmane.org>	
	<W52087337.337.12601.3@mx-extra>	
	<9afea2ac0609110910lf762f6ft6672b6dc092e5deb@mail.gmail.com>	
	<W52089617.803.12639.1@mx-extra>	
	<9afea2ac0609110934j32fad83cl87a662d0781ca473@mail.gmail.com>	
	<W52092491.450.12699.1@mx-extra>
	<9afea2ac0609111050n2b5d6413uc6aabc0a46bbe9af@mail.gmail.com>
Message-ID: <4506A877.2080003@googlemail.com>

Tim Williams wrote:
> Alternatively there is os.path.exists which works for files or
> directories, but calling it every time you use the wrapper is probably
> more expensive than using the try statement when the program *does*
> exist.
>
> import os.path
> if not os.path.exists('/dir1/dir2/filename'):
>    print_something_and_exit(filename)
>
> :)
>
problem with that is that the path may change between installations on 
different machine and I can't guarantee /dir1/dir2 which is why a test 
of all dirs in the path is more portable.

-- 
Hari Sekhon



From blair.houghton at gmail.com  Sun Sep 24 12:43:36 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 24 Sep 2006 09:43:36 -0700
Subject: Timeline for Python?
In-Reply-To: <ef5gbt$721$3@lust.ihug.co.nz>
References: <mailman.497.1159035007.10491.python-list@python.org>
	<1159060365.363391.238090@d34g2000cwd.googlegroups.com>
	<ef5gbt$721$3@lust.ihug.co.nz>
Message-ID: <1159116216.139499.302720@k70g2000cwa.googlegroups.com>


Lawrence D'Oliveiro wrote:
> In message <1159060365.363391.238090 at d34g2000cwd.googlegroups.com>, Blair P.
> Houghton wrote:
>
> > wesley chun wrote:
> >>
> >> 1. never write against older versions of Python... you will only
> >>     obsolete your book even faster (well, "sooner")
> >
> > I believe there is some market for documentation of older
> > versions of software.  Many installations are constrained
> > by the cost of upgrading and can not migrate to a newer
> > version.
>
> And they can afford to buy books??

Buying a book costs $40, max.

An hour of upgrade wrangling costs $40, min.  And it's never just one
person involved.  And it's never just an hour.  And yes, there are
plenty of places using software, especially "free" software, for which
any expense greater than a book is a major decision.

> If they're that strapped for cash, it's cheaper to access documentation on
> the Web.

Yes, it is, but the documentation on the web doesn't make the author
any money, which is why it's poorly constructed, poorly edited,
difficult to read, inaccurate, and abandoned when the next version of
the software comes out.

If book authors are reluctant to get paid to write new books for old
versions of systems, can you imagine how few people want to maintain
old web-docs for old versions of systems?

But there's a market there for someone willing to make a few bucks, and
a publisher with the savvy to find it and serve it.

--Blair



From gnewsg at gmail.com  Thu Sep 14 05:41:29 2006
From: gnewsg at gmail.com (gnewsg at gmail.com)
Date: 14 Sep 2006 02:41:29 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1158163732.971004.169530@i42g2000cwa.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158015248.563755.32980@p79g2000cwp.googlegroups.com>
	<1158073922.601548.278280@m73g2000cwd.googlegroups.com>
	<ee6noq$qdn$1@newsreader2.netcologne.de>
	<1158163732.971004.169530@i42g2000cwa.googlegroups.com>
Message-ID: <1158226889.343957.33680@m73g2000cwd.googlegroups.com>

What about IDLE? I really apreciate it but a big broblem is that it
doesn't support tabs: for every source you edit you have to open a new
IDLE window. :-\



From fredrik at pythonware.com  Tue Sep 19 13:28:02 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 19 Sep 2006 19:28:02 +0200
Subject: Curious issue with simple code
In-Reply-To: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
Message-ID: <eep9b2$41j$1@sea.gmane.org>

codefire wrote:

> As above it all works as expected. However, on the marked line, if I
> use f instead of fp then that condition returns false! Surely,
> isfile(f) should return true, even if I just give a filename, rather
> than the full path? 

try printing both "f" and "fp", and see if you can tell the difference 
between the two filenames...

</F>



From apardon at forel.vub.ac.be  Thu Sep 14 10:24:25 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 14 Sep 2006 14:24:25 GMT
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
	<pan.2006.09.14.09.41.14.876360@REMOVEME.cybersource.com.au>
Message-ID: <slrnegipgp.4us.apardon@rcpc42.vub.ac.be>

On 2006-09-14, Steven D'Aprano <steve at REMOVEME.cybersource.com.au> wrote:
> On Wed, 13 Sep 2006 07:45:02 +0000, Antoon Pardon wrote:
>
>>>> This is just an idea of mine, nothing I expect python to adapt.
>>>> But just suppose the language allowed for words in bold. A word
>>>> in bold would be considered a reserved word, a word in non bold
>>>> would be an identifier.
>
> [snip]
>
>> <Shrug>, Different options are possible, in a file the keywords
>> could just be prefixed with a Ctrl-K, and depending on the editor or its
>> setting, this could be shown bold or blue or whatever. I don't care
>> about the specifics at this point. I just wanted to make clear there
>> is the option to make/show the distiction between identifiers and keywords
>> more explicitly.
>
> But surely all you are doing is changing the reserved word from (say)
> "return" to "\x0breturn". Once you do that, you can bet that people will
> complain that they want to have identifiers in bold too, why can't they
> create a name "\x0breturn", and somebody will come up with an even more
> complicated scheme for accommodating them... wash, rinse, repeat.

Do you really think this is a serious possibility? As far as I can see,
that \x0b that will be prepended to differentiate keywords from
identifiers is a technique called stropping, that has been used with
some algol languages. Have you any knowledge of people programming algol
who asked for the use of stropped identifiers?

I think I really would be amazed to find out there were such people,
but then I have been amazed before. So I really would like to know.

-- 
Antoon Pardon


From skip at pobox.com  Fri Sep 15 15:19:02 2006
From: skip at pobox.com (skip at pobox.com)
Date: Fri, 15 Sep 2006 14:19:02 -0500
Subject: REQ: Java/J2EE Developer 10 Months
In-Reply-To: <1158346412.5738.6.camel@dot.uniqsys.com>
References: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>
	<450AF3F0.5020808@holdenweb.com>
	<1158346412.5738.6.camel@dot.uniqsys.com>
Message-ID: <17674.64678.31100.885098@montanaro.dyndns.org>

    Carsten> Yes, he is an idiot. Good call on CC'ing your assessment to
    Carsten> him. :)

Steve knows it's good to be subtle with these guys. ;-)

Skip


From sjmachin at lexicon.net  Sat Sep 23 21:16:13 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 18:16:13 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
Message-ID: <1159060573.521054.243850@m7g2000cwm.googlegroups.com>


Pete wrote:
> I was running the HTTP GET example at
> http://www.python.org/doc/current/lib/httplib-examples.html and ran
> into a bit of trouble...
>
> >>> import httplib  # This works.
> >>> conn = httplib.HTTPConnection("www.python.org")  # This works.
> >>> conn.request("GET", "/index.html")  # This does not work...
>
> The errors I get are below. Any suggestions on how to get rid of the
> errors? Thanks!

You have *ONE* error, with a long traceback, which is incomplete,
because it doesn't show the error message that should be at the end of
the traceback.

>
> # Begin errors...
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/lib/python2.4/httplib.py", line 801, in request
>     self._send_request(method, url, body, headers)
>   File "/usr/lib/python2.4/httplib.py", line 818, in _send_request
>     self.putrequest(method, url, **skips)
>   File "/usr/lib/python2.4/httplib.py", line 749, in putrequest
>     self.putheader('Host', self.host.encode("idna"))
>   File "/usr/lib/python2.4/encodings/__init__.py", line 96, in
> search_function
>     globals(), locals(), _import_tail)
>   File "/usr/lib/python2.4/encodings/idna.py", line 6, in ?
>     dots = re.compile(u"[\u002E\u3002\uFF0E\uFF61]")

This is compiling a *constant* regular expression, and works OK on the
Windows distribution of Python 2.4.3 :

| Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
| Type "help", "copyright", "credits" or "license" for more
information.
| >>> import re
| >>> dots = re.compile(u"[\u002E\u3002\uFF0E\uFF61]")
| >>> dots.match('.')
| <_sre.SRE_Match object at 0x00AF6058> # bonus: compiled regex works.
| >>> dots.match(u'\uff61')
| <_sre.SRE_Match object at 0x00AF6918>

You appear to be running 2.4.n; what is n, and exactly which *x
platform are you running it on? Perhaps a file in /usr/lib/python2.4 is
corrupt, but we won't know until you give the *full* traceback. Do you
get the same results when you try what I did at the interpreter
interactive prompt?

>   File "/usr/lib/python2.4/sre.py", line 180, in compile
>     return _compile(pattern, flags)
>   File "/usr/lib/python2.4/sre.py", line 225, in _compile
>     p = sre_compile.compile(pattern, flags)
>   File "/usr/lib/python2.4/sre_compile.py", line 500, in compile
>     code = _code(p, flags)
>   File "/usr/lib/python2.4/sre_compile.py", line 481, in _code
>     _compile_info(code, p, flags)
>   File "/usr/lib/python2.4/sre_compile.py", line 459, in _compile_info
>     _compile_charset(charset, flags, code)
>   File "/usr/lib/python2.4/sre_compile.py", line 178, in
> _compile_charset
>     for op, av in _optimize_charset(charset, fixup):
>   File "/usr/lib/python2.4/sre_compile.py", line 221, in
> _optimize_charset
>     return _optimize_unicode(charset, fixup)
>   File "/usr/lib/python2.4/sre_compile.py", line 341, in
> _optimize_unicode
>     mapping = array.array('b', mapping).tostring()

... to be continued in the next episode.

Regards,
John



From fredrik at pythonware.com  Mon Sep 25 13:50:17 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 19:50:17 +0200
Subject: unicode, bytes redux
In-Reply-To: <45177946.1020005@jamots.com>
References: <45177946.1020005@jamots.com>
Message-ID: <ef94so$m8g$1@sea.gmane.org>

willie wrote:

> Is it too ridiculous to suggest that it'd be nice
> if the unicode object were to remember the
> encoding of the string it was decoded from?
> So that it's feasible to calculate the number
> of bytes that make up the unicode code points.
> 
> # U+270C
> # 11100010 10011100 10001100
> buf = "\xE2\x9C\x8C"
> 
> u = buf.decode('UTF-8')
> 
> # ... later ...
> 
> u.bytes() -> 3
> 
> (goes through each code point and calculates
> the number of bytes that make up the character
> according to the encoding)

what about:

     buf = "\xE2\x9C\x8C"
     bytes = buf.decode("utf-8")

     # ... later ...

     print bytes -> 3

or even

     class utf8string(unicode):
	def __new__(cls, data):
	    return unicode.__new__(cls, data, "utf-8")
	def __init__(self, data):
	    self.bytes = len(data)

     buf = "\xE2\x9C\x8C"

     u = utf8string(buf)

     # ... later ...

     print repr(u)
     print u.bytes -> 3

</F>



From g.brandl-nospam at gmx.net  Wed Sep 27 12:39:39 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 18:39:39 +0200
Subject: Surprise using the 'is' operator
In-Reply-To: <451a98f8$0$19688$88260bb3@free.teranews.com>
References: <mailman.746.1159307893.10491.python-list@python.org>
	<451A9824.6040106@tobiah.org> <efe7v1$8ls$1@news.albasani.net>
	<451a98f8$0$19688$88260bb3@free.teranews.com>
Message-ID: <efe9gd$anb$1@news.albasani.net>

tobiah wrote:
>>> Suppose I fill an list with 100 million random integers in the range
>>> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>>> of '12345' pointed to the same integer object?  Why should more be made,
>>> when they all do the same thing, and are not subject to change?
>> 
>> Because for typical usage of integers (which doesn't include your example),
>> it is more expensive to check if there's already an integer with that 
>> specific
>> value out there than to create a new one.
>> 
>> 
>> Georg
> 
> I see.  I assume then, that the lookup performance hit is acceptable
> as a trade off against memory usage for the quite commonly used range
> of (-5, 257).  Is that the idea?

Yes, indeed.

Georg


From maric at aristote.info  Fri Sep  8 06:12:39 2006
From: maric at aristote.info (Maric Michaud)
Date: Fri, 8 Sep 2006 12:12:39 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <1157701901.506736.45610@p79g2000cwp.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
Message-ID: <200609081212.39554.maric@aristote.info>

Le vendredi 08 septembre 2006 09:51, bearophileHUGS at lycos.com a ?crit?:
> Frank Millman, just a short note, more expert people can give you
> better answers. There aren't abstract classes in Python. They are all
> concrete.
Really ? This is like saying there is no singleton in Python...

class AbstractClass(object) :

	def __init__(self) : raise RuntimeError('Ths class is an abstract one !')

The abstract class can then define APIs (methods which raise 
NotImplementedError) and/or logic (fully implemented methods).
With this scheme you are not stuck to the "API only" usage of abstract classes 
like in Java nad its interfaces.

> You may have classes with undefined methods (they may raise 
> NotImplementedError).

C++ "pure virtual methods" is only the C++ way of doing something which is a 
more general concept in OOP.


-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From kylotan at gmail.com  Thu Sep 14 12:26:51 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 14 Sep 2006 09:26:51 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <xWnMg.9702$yO7.1766@newssvr14.news.prodigy.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<xWnMg.9702$yO7.1766@newssvr14.news.prodigy.com>
Message-ID: <1158251211.415884.51690@e3g2000cwe.googlegroups.com>

Bryan Olson wrote:
> Ben Sizer wrote:
> > It's not a crackpot theory. It's a completely reasonable theory. SQL is
> > based on relational algebra, which provides a mathematical set of
> > operators for grouping data that is stored in separate sets. That data
> > is selected and projected according to its value, and nothing else. The
> > concept of it having a 'type' has been overlaid on top of this,
> > presumably to facilitate efficient implementation, which tends to
> > require fixed-width rows (and hence columns). It's not necessary in any
> > sense, and it's reasonable to argue that if it was trivial to implement
> > variable width columns as efficiently as fixed width columns, that
> > explicit data types might never have needed to exist.
>
> The mathematical definition of the relational model includes
> that data values are drawn from specific sets.

Well, I did say relational algebra, which from what I understand
predates the official 'relational model'.

> Implementing variable width columns has nothing to do with it.

On a practical level, it has lots to do with it!

> Here's
> the reference:
>
>     1.3. A Relational View of Data
>
>     The term relation is used here in its accepted mathematical
>     sense. Given sets S1, S2, ???, Sn, (not necessarily
>     distinct), R is a relation on these n sets if it is a set
>     of n-tuples each of which has its first element from S1,
>     its second element from S2, and so on [1]. We shall refer to
>     Sj as the jth domain of R.

Does it specify anywhere that sets S1...Sn cannot each be the universal
set? To put it another way - although the spec implies the existence of
limited set domains, and data types enforce limited domains, I don't
think a requirement to allow limited domains is a requirement for
static data types.

-- 
Ben Sizer



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 08:35:42 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 14:35:42 +0200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net> <ef37r0$5hj$3@lust.ihug.co.nz>
Message-ID: <4nko0uFar902U2@individual.net>

Lawrence D'Oliveiro wrote:

> Which is why C++ allows "not", "and" and "or".

Is this standards compliant? My reference (book) doesn't contain it,
but g++ allows it.

Regards,


Bj?rn

-- 
BOFH excuse #441:

Hash table has woodworm



From maxm at mxm.dk  Mon Sep 25 10:59:26 2006
From: maxm at mxm.dk (Max M)
Date: Mon, 25 Sep 2006 16:59:26 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
Message-ID: <4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>

Jon Ribbens skrev:
> In article <ef8oqr$9pt$1 at news.albasani.net>, Georg Brandl wrote:
>>> I'm sorry, that's not good enough. How, precisely, would it break
>>> "existing code"? Can you come up with an example, or even an
>>> explanation of how it *could* break existing code?
>> Is that so hard to see? If cgi.escape replaced "'" with an entity reference,
>> code that expects it not to do so would break.
> 
> Sorry, that's still not good enough. Why would any code expect such a
> thing?


Oh ... because you cannot see a use case for that *documented* 
behaviour, it must certainly be wrong?


This funktion which is correct by current documentation will be broken 
by you change.

def hasSomeWord(someword):
     import urllib
     f = urllib.open('http://www.example.com/cgi_escaped_content')
     content = f.read()
     f.close()
     return '"%s"' % someword in content:

You might think that it is stupid code that should be changed to take 
escaped quotes into account. But that is really not your bussines to 
decide if the other behaviour is documented and correct.

I find it amazing that you cannot understand this. I will stop replying 
in this thread now.

Max M


From sjmachin at lexicon.net  Thu Sep  7 07:12:43 2006
From: sjmachin at lexicon.net (John Machin)
Date: 7 Sep 2006 04:12:43 -0700
Subject: string search and modification
In-Reply-To: <2omvf2h8sfmdkq7oq6m98p0me4l0uo8ag6@4ax.com>
References: <209uf25ufjhf817ngsbuompvrggl7tf2ln@4ax.com>
	<7x1wqopwvk.fsf@ruckus.brouhaha.com>
	<2omvf2h8sfmdkq7oq6m98p0me4l0uo8ag6@4ax.com>
Message-ID: <1157627563.794774.320430@i42g2000cwa.googlegroups.com>


Jim Britain wrote:

>
> Final integration:
>
>     def identifyHost(self):
>         for line in self.fileContents:
>             if re.search("throttling", line.lower()):
>                   p=r'\[((\d{1,3}\.){3}\d{1,3})\]'
>                   ip=re.search(p,line)

A prudent pessimist might test for the complete absence of an IP
address:
    if not ip:
        print "Huh?" # or whatever

>                   if ip.group(1) in self.ignoreList:
>                         continue
>                   if not ip.group(1) in self.banList:
>                          self.banList.append(ip.group(1))
> 
>



From george.sakkis at gmail.com  Fri Sep 29 11:00:28 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 29 Sep 2006 08:00:28 -0700
Subject: How to iterate through a sequence, grabbing subsequences?
References: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
Message-ID: <1159542028.320286.46480@m73g2000cwd.googlegroups.com>

Matthew Wilson wrote:

> I wrote a function that I suspect may already exist as a python builtin,
> but I can't find it:
>
> def chunkify(s, chunksize):
>     "Yield sequence s in chunks of size chunksize."
>     for i in range(0, len(s), chunksize):
>         yield s[i:i+chunksize]
>
> I wrote this because I need to take a string of a really, really long
> length and process 4000 bytes at a time.
>
> Is there a better solution?

There's not any builtin for this, but the same topic came up just three
days ago: http://tinyurl.com/qec2p. 

Regards,
George



From exarkun at divmod.com  Sun Sep  3 12:07:03 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Sun, 3 Sep 2006 12:07:03 -0400
Subject: Twisted vs POS (Plain-old sockets)
In-Reply-To: <d416abde0609030019u5a75d6b1mdc809c88284370da@mail.gmail.com>
Message-ID: <20060903160703.1717.594778383.divmod.quotient.37975@ohm>

On Sun, 3 Sep 2006 00:19:17 -0700, Darren Kirby <bulliver at gmail.com> wrote:
>Hey all,
>
>I have a (FOSS) project here that I am about to start that requires TCP
>networking support, and in fact, will require me to design and implement a
>(text based) protocol from scratch.

I'm sorry.

>
>I have been playing with Twisted today and managed to get a simple
>client/server talking to each other. However, the twisted framework does
>seem
>very complex, and includes many, many, features I will never need. The docs
>seem a little lacking (or perhaps just confusing) as well. Twisted's good
>points are that it will save me from having to write many things from
>scratch, asynchronous networking being the biggie.

If there are features you don't need, then don't use them.  What does their
existence cost you?  Are you going to use the sunaudio module from the
standard library?  If not, is this an argument in favor of using C++ instead
of Python?

As for documentation, many people say it is lacking, but perhaps one person
in a thousand points out _how_ or _where_ it is lacking.  Unfortunately it
is difficult to improve things (or even determine if they really are lacking)
with this level of feedback.

Keep in mind that in addition to the online documentation, there is a Twisted
book, an extremely helpful twisted mailing list (with years of archives
online), and an IRC channel populated at nearly all hours of the day with
people who can answer Twisted questions.

>
>I guess I am wondering if given the fact I need a custom protocol, and need
>to
>talk TCP/IP should I stick with twisted or just use plain old sockets and
>build it myself?

Talking to the TCP/IP stack is surprisingly difficult to get right.  Since
it is extremely unlikely that you actually _care_ about all of the random,
stupid differences between different TCP implementations, you should use
Twisted, since it does its best to hide these differences and instead
present a uniform API.

If you use bare sockets, you will need to learn many of these quirks yourself,
frequently through a bug report from a user, since many of them are
undocumented.

>Is there a third option I should consider? Have others
>found
>themselves in this situation? Thoughts? Comments? I am really just fishing
>for opinions here...

Twisted is great.  It will speed up your development time and reduce the
amount of defects you need to deal with.  It will 

>
>If it makes a difference: Depending on performance parts of this app may
>well
>end up as a prototype for a final (...alternative?) C++ implementation.
>
>Thanks for consideration,

Hope this helps,

Jean-Paul


From oliver.andrich at gmail.com  Sun Sep 24 08:35:11 2006
From: oliver.andrich at gmail.com (Oliver Andrich)
Date: Sun, 24 Sep 2006 14:35:11 +0200
Subject: Question about decorators (with context?)
Message-ID: <6f7b52d0609240535n6303d6d3ub05f8b92f2236909@mail.gmail.com>

Hi,

sorry for the vague subject, but I can't come up with a better one so far.

I am currently writing a wrapper around ImageMagicks MagickWand
library using the ctypes module. During this development i have to
handle exceptions in an slightly different way, then python normally
handles them.

I am wrapping the libraries functionality in a class that looks like
that. (I leave out the ctypes calls and stuff as far as it is
possible.)

class MagickWand(object):

    def __init__(self):
        self._wand = <create a MagickWand instance using ctypes>

    @my_funky_decorator
    def read_image(self, filename):
        return <ctypes call of the MagickWand C function to read an image>

You can see, I plan to have my own MagickWand object, which wraps the
C struct and functions. The normal habit of MagickWand is to call a
function, that returns either True or False. Based on this the user
has to check for an exception or not.

I will have to wrap a lot of methods to get all the functionality I
need. And the checking for an exception looks always the same. So I
want to write short methods, which are decorated by my_funky_decorator
which handles the error checking and exception handling. Sadly, this
decorator needs access to self._wand from the current object.

So far I can only think of a solution, where I have to do something like that.

@my_funky_decorator(wand=<some way to access the _wand>)
def read_image(self, filename):
    pass

So, I like to ask, if someone could enlighten me how to implement the
easy decorator I mentioned in my first "example".

Thanks and best regards,
Oliver

-- 
Oliver Andrich <oliver.andrich at gmail.com> --- http://roughbook.de/


From sjmachin at lexicon.net  Thu Sep 14 23:55:54 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 20:55:54 -0700
Subject: Pre-defining an action to take when an expected error occurs
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
Message-ID: <1158292554.492485.143690@h48g2000cwc.googlegroups.com>

Tempo wrote:
> Hello. I am getting the error that is displayed below, and I know
> exactly why it occurs. I posted some of my program's code below, and if
> you look at it you will see that the error terminates the program
> pre-maturely. Becasue of this pre-mature termination, the program is
> not able to execute it's final line of code, which is a very important
> line. The last line saves the Excel spreadsheet. So is there a way to
> make sure the last line executes? Thanks in advanced for all of the
> help. Thank you.
>
>
> Error
> ####
>
> IndexError: list index out of range
>
[snip]

Hi, Tempo, nice to see xlrd getting some usage :-)

Are you sure that you *really* want to save a spreadsheet written by
your buggy program??? It is better to fix errors, rather than ignore
them.

However, as you asked how: To ensure that cleanup code is executed no
matter what happens, use try/except/finally as in the following
example.

HTH,
John


C:\junk>type tempo.py
import sys

def main(n):
    return (10 ** n) / n

try:
    try:
        print "executing the application ..."
        n = int(sys.argv[1])
        if n < 0:
            # simulate something nasty happening ...
            import nosuchmodule
        else:
            x = main(n)
        print "app completed normally: %r" % x
    except KeyboardInterrupt:
        # need this to escape when n is large
        print "kbd interrupt ...."
        raise
    except ZeroDivisionError:
        print "doh!"
        raise
finally:
    # code to be executed no matter what happens
    print "finally ... cleaning up"

C:\junk>tempo.py 0
executing the application ...
doh!
finally ... cleaning up
Traceback (most recent call last):
  File "C:\junk\tempo.py", line 14, in ?
    x = main(n)
  File "C:\junk\tempo.py", line 4, in main
    return (10 ** n) / n
ZeroDivisionError: integer division or modulo by zero

C:\junk>tempo.py -1
executing the application ...
finally ... cleaning up
Traceback (most recent call last):
  File "C:\junk\tempo.py", line 12, in ?
    import nosuchmodule
ImportError: No module named nosuchmodule

C:\junk>tempo.py 3
executing the application ...
app completed normally: 333
finally ... cleaning up

C:\junk>tempo.py 10000000000
executing the application ...
kbd interrupt ....
finally ... cleaning up
Traceback (most recent call last):
  File "C:\junk\tempo.py", line 14, in ?
    x = main(n)
  File "C:\junk\tempo.py", line 4, in main
    return (10 ** n) / n
KeyboardInterrupt

C:\junk>



From utabintarbo at gmail.com  Fri Sep 15 13:25:14 2006
From: utabintarbo at gmail.com (utabintarbo)
Date: 15 Sep 2006 10:25:14 -0700
Subject: Exposing Excel as a Webservice
In-Reply-To: <1158269224.831066.73460@m73g2000cwd.googlegroups.com>
References: <1158269224.831066.73460@m73g2000cwd.googlegroups.com>
Message-ID: <1158341114.762124.194320@d34g2000cwd.googlegroups.com>

Disclaimer: I am not an expert in python, or even programming, for that
matter....

In any case, option #2 sounds like the most theoretically sound. It
sounds like you are using Excel as a database, and your worker thread
as a transaction queue.

Something to consider: do you really need to modify directly a
spreadsheet? Can you not use another format to feed a template
spreadsheet (ie. xml or csv), and then modify that file as a text file
without the overhead of Excel?

Just a thought....



From jon+usenet at unequivocal.co.uk  Tue Sep 26 11:26:12 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 15:26:12 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
Message-ID: <slrnehihk6.9o0.jon+usenet@snowy.squish.net>

In article <mailman.698.1159283878.10491.python-list at python.org>, Brian Quinlan wrote:
> A summary of this pointless argument:

Your summary seems pretty reasonable, but please note that later on,
the thread was not about cgi.escape escaping (or not) quote
characters (as described in your summary), but about Fredrik arguing,
somewhat incoherently, that it should have to take character encodings
into consideration.


From ldo at geek-central.gen.new_zealand  Sat Sep 23 08:17:00 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 00:17:00 +1200
Subject: QuoteSQL
Message-ID: <ef38i2$6tb$2@lust.ihug.co.nz>

Why doesn't MySQLdb provide a function like this:

def QuoteSQL(Str, DoWild) :
    """returns a MySQL string literal which evaluates to Str. Needed
    for those times when MySQLdb's automatic quoting isn't good enough."""
    Result = []
    for Ch in str(Str) :
        if Ch == "\0" :
            Ch = "\\0"
        elif Ch == "\010" :
            Ch = "\\b"
        elif Ch == "\011" :
            Ch = "\\t"
        elif Ch == "\012" :
            Ch = "\\n"
        elif Ch == "\015" :
            Ch = "\\r"
        elif Ch == "\032" :
            Ch = "\\z"
        elif Ch == "'" or Ch == "\"" or Ch == "\\" :
            Ch = "\\" + Ch
        elif DoWild and (Ch == "%" or Ch == "_") :
            Ch = "\\" + Ch
        #end if
        Result.append(Ch)
    #end for
    return "\"" + "".join(Result) + "\""
#end QuoteSQL



From ray_usenet at yahoo.com  Fri Sep 22 23:31:10 2006
From: ray_usenet at yahoo.com (Ray)
Date: 22 Sep 2006 20:31:10 -0700
Subject: +1 QOTW
In-Reply-To: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
Message-ID: <1158982270.297357.63360@e3g2000cwe.googlegroups.com>


olsongt at verizon.net wrote:
> Did anyone else crack up when Larry Wall described python with the
> statement:
>
> Python, as the "anti-Perl," is heavily invested in maintaining Order.

Perl? Larry who?

(I've been going to a hypnotherapist who specializes in erasing bad
memories of the past, sorry.)


> In the state of the onion address?
> 
> http://www.perl.com/pub/a/2006/09/21/onion.html



From ldo at geek-central.gen.new_zealand  Sat Sep 23 08:00:16 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 00:00:16 +1200
Subject: A critique of cgi.escape
Message-ID: <ef37im$5hj$1@lust.ihug.co.nz>

The "escape" function in the "cgi" module escapes characters with special
meanings in HTML. The ones that need escaping are '<', '&' and '"'.
However, cgi.escape only escapes the quote character if you pass a second
argument of True (the default is False):

    >>> cgi.escape("the \"quick\" & <brown> fox")
    'the "quick" &amp; &lt;brown&gt; fox'
    >>> cgi.escape("the \"quick\" & <brown> fox", True)
    'the &quot;quick&quot; &amp; &lt;brown&gt; fox'

This seems to me to be dumb. The default option should be the safe one: that
is, escape _all_ the potentially troublesome characters. The only time you
can get away with NOT escaping the quote character is outside of markup,
e.g.

    <TEXTAREA>
    unescaped "quotes" allowed here
    </TEXTAREA>

Nevertheless, even in that situation, escaped quotes are acceptable.

So I think the default for the second argument to cgi.escape should be
changed to True. Or alternatively, the second argument should be removed
altogether, and quotes should always be escaped.

Can changing the default break existing scripts? I don't see how. It might
even fix a few lurking bugs out there.


From gandalf at designaproduct.biz  Mon Sep 11 16:36:25 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Mon, 11 Sep 2006 22:36:25 +0200
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <1158005948.883368.185320@m73g2000cwd.googlegroups.com>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>	<4505B54C.30905@designaproduct.biz>	<mailman.285.1158002192.5279.python-list@python.org>
	<1158005948.883368.185320@m73g2000cwd.googlegroups.com>
Message-ID: <4505C8C9.4030608@designaproduct.biz>

Daniel Crespo ?rta:
> Laszlo Nagy wrote:
>   
>>> If you have OpenSSL installed, you can do the following:
>>>
>>> 1. Create a new directory and place the two attached files in it
>>> (openssl.cnf and generate.sh)
>>> 2. Run  "chmod +x gen_cert.sh ; ./gen_cert.sh  yourdomain.com"
>>>       
>> I meant generate.sh instead of gen_cert.sh.
>>
>> Under windows it won't work. But you can easily convert generate.sh into
>> generate.bat. :-)
>>
>>   Laszlo
>>     
>
> I'm on Windows...
> I'm also trying to get OpenSSL installed, but I need compilers and all
> that stuff. Before getting involved in that, do you know of a faster
> way to have it installed?
>   
Yes. Read the recipe once more. Especially, the first document string in 
that program. ;-)

"""For windows users: http://webcleaner.sourceforge.net/pyOpenSSL-0.6.win32-py2.4.exe"""

(You will also need the openssl binaries for windows, but they are very easy to find.)


   Laszlo







From me at privacy.net  Sat Sep 16 13:50:49 2006
From: me at privacy.net (Dan Sommers)
Date: Sat, 16 Sep 2006 13:50:49 -0400
Subject: Coding Nested Loops
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.155.1158356025.10491.python-list@python.org>
	<eeg5o2$226$00$1@news.t-online.com>
	<mailman.176.1158420580.10491.python-list@python.org>
	<m2bqpfeq7d.fsf@unique.fqdn>
	<mailman.180.1158426398.10491.python-list@python.org>
Message-ID: <m24pv7em4m.fsf@unique.fqdn>

On Sat, 16 Sep 2006 10:06:25 -0700 (PDT),
Rich Shepard <rshepard at appl-ecosys.com> wrote:

> On Sat, 16 Sep 2006, Dan Sommers wrote:

>> When you import random, all you're doing is importing the module; you
>> have to specify any given attribute thereof:

>   I thought that was implied. For example, I use 'import wx' and can
> then instantiate wx.frame, wx.dialogbox, etc. without explicitly
> importing each one. Apparently different modules work differently.

No, they all work the same way (thank goodness!).  The "." between "wx"
and "frame" is the same dot as is between "random" and "choice" (i.e.,
random.choice is the same construct as wx.frame).

Don't be confused by from:  if you use "from wx import frame," then you
can access frame *without* the "wx." bit.  I don't have wx installed,
but that works with random, too:

    >>> choice
    Traceback (most recent call last):
      File "<stdin>", line 1, in ?
    NameError: name 'choice' is not defined
    >>> import random
    >>> random.choice
    <bound method Random.choice of <random.Random object at 0x1841a10>>
    >>> from random import choice
    >>> choice
    <bound method Random.choice of <random.Random object at 0x1841a10>>

HTH,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>
"I wish people would die in alphabetical order." -- My wife, the genealogist


From horpner at yahoo.com  Tue Sep 26 15:21:02 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: Tue, 26 Sep 2006 19:21:02 GMT
Subject: Whither binary search?
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
	<mailman.722.1159296789.10491.python-list@python.org>
Message-ID: <y4fSg.1876$5i7.112@newsreading01.news.tds.net>

On 2006-09-26, skip at pobox.com <skip at pobox.com> wrote:
> bisect...

That doesn't tell me if an item doesn't exist in the sequence
though, does it?  Maybe I'm being dense.

My guess nobody keeps their sequences sorted in Python. ;)

-- 
Neil Cerutti


From meyer at acm.org  Wed Sep  6 14:16:01 2006
From: meyer at acm.org (Andre Meyer)
Date: Wed, 6 Sep 2006 20:16:01 +0200
Subject: IDE
In-Reply-To: <1157554933.573092.282270@i42g2000cwa.googlegroups.com>
References: <edlp29$6uf$1@news4.fe.internet.bosch.com>
	<1157554933.573092.282270@i42g2000cwa.googlegroups.com>
Message-ID: <7008329d0609061116r15d32380p770f550aa9adc25b@mail.gmail.com>

http://pydev.sourceforge.net/

http://wiki.python.org/moin/PythonEditors
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From tjreedy at udel.edu  Tue Sep 19 19:42:04 2006
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 19 Sep 2006 19:42:04 -0400
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
Message-ID: <eepv8b$e4t$1@sea.gmane.org>


"Bruno Desthuilliers" <bdesth.quelquechose at free.quelquepart.fr> wrote in 
message news:4510425e$0$12250$636a55ce at news.free.fr...
>Err... is it me being dumb, or is it a perfect use case for str.split ?

s.partition() was invented and its design settled on as a result of looking 
at some awkward constructions in the standard library and other actual use 
cases.  Sometimes it replaces s.find or s.index instead of s.split.  In 
some cases, it is meant to be used within a loop.  I was not involved and 
so would refer you to the pydev discussions.

tjr







From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 06:02:56 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 12:02:56 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr8n.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efasng$16m$2@lust.ihug.co.nz>
Message-ID: <slrnehhumg.mes.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
> Because quoting the wildcards introduces backslash specials before
> each wildcard. Quoting non-wildcards then causes those backslashes
> to be doubled, which means they escape themselves instead of the
> wildcards.

I don't know about other DBMSes, but in PostgreSQL you can use any
escape character for the pattern, check out
http://www.postgresql.org/docs/8.0/interactive/functions-matching.html

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From antroy at gmail.com  Fri Sep 22 04:30:21 2006
From: antroy at gmail.com (Ant)
Date: 22 Sep 2006 01:30:21 -0700
Subject: I need some help with a regexp please
In-Reply-To: <1158881568.914183.112660@i3g2000cwc.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
Message-ID: <1158913821.697360.82730@i42g2000cwa.googlegroups.com>


John Machin wrote:
...
> A little more is unfortunately not enough. The best advice you got was
> to use an existing e-mail address validator.

We got bitten by this at the last place I worked - we were using a
regex email validator (from Microsoft IIRC), and we kept having
problems with specific email addresses from Ireland. There are stack of
Irish email addresses out there of the form paddy.o'reilly at domain -
perfectly valid email address, but doesn't satisfy the usual naive
versions of regex validators.

We use an even worse validator at my current job, but the feeling the
management have (not one I agree with) is that unusual email addresses,
whilst perhaps valid, are uncommon enough not to worry about....



From harbingerofpeace at post.com  Sat Sep 23 22:10:09 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 19:10:09 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159061888.165073.105510@h48g2000cwc.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
Message-ID: <1159063809.521358.315770@e3g2000cwe.googlegroups.com>

> ...
> I'm going to upgrade Python and see if that has any effect...
> ...

I upgraded Python, it had an effect, but not a positive one. My
interactivity is below. Where is the "Hello World." text coming from?

Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
[GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import httplib
>>> conn = httplib.HTTPConnection("www.python.org")
>>> conn.request("GET", "/index.html")
Hello World.
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.4/httplib.py", line 804, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python2.4/httplib.py", line 821, in _send_request
    self.putrequest(method, url, **skips)
  File "/usr/lib/python2.4/httplib.py", line 752, in putrequest
    self.putheader('Host', self.host.encode("idna"))
  File "/usr/lib/python2.4/encodings/__init__.py", line 96, in
search_function
    globals(), locals(), _import_tail)
  File "/usr/lib/python2.4/encodings/idna.py", line 6, in ?
    dots = re.compile(u"[\u002E\u3002\uFF0E\uFF61]")
  File "/usr/lib/python2.4/sre.py", line 180, in compile
    return _compile(pattern, flags)
  File "/usr/lib/python2.4/sre.py", line 225, in _compile
    p = sre_compile.compile(pattern, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 500, in compile
    code = _code(p, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 481, in _code
    _compile_info(code, p, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 459, in _compile_info
    _compile_charset(charset, flags, code)
  File "/usr/lib/python2.4/sre_compile.py", line 178, in
_compile_charset
    for op, av in _optimize_charset(charset, fixup):
  File "/usr/lib/python2.4/sre_compile.py", line 221, in
_optimize_charset
    return _optimize_unicode(charset, fixup)
  File "/usr/lib/python2.4/sre_compile.py", line 341, in
_optimize_unicode
    mapping = array.array('b', mapping).tostring()
TypeError: typecode argument must be a valid type.
>>>



From chris at simplistix.co.uk  Mon Sep 11 19:03:34 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Tue, 12 Sep 2006 00:03:34 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <4505D782.3010105@simplistix.co.uk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>	<ee4cam$g9a$03$1@news.t-online.com>
	<4505CAA1.9090102@simplistix.co.uk>
	<4505D782.3010105@simplistix.co.uk>
Message-ID: <4505EB46.30306@simplistix.co.uk>

Chris Withers wrote:
> print msg.as_string()
> 
> MIME-Version: 1.0
> Content-Type: text/plain; charset; charset="utf-8"
                             ^^^^^^^
Actually, even this isn't correct as you can see above...

> charset = Charset('utf-8')
> msg = MIMEText('','plain',None)
> msg.set_payload(u'Some text with chars that need encoding:\xa3',charset)
> 
> Traceback (most recent call last):
>   File "C:\test_encoding.py", line 5, in ?
>     msg.set_payload(u'Some text with chars that need 
> encoding:\xa3',charset)
>   File "c:\python24\lib\email\Message.py", line 218, in set_payload
>     self.set_charset(charset)
>   File "c:\python24\lib\email\Message.py", line 260, in set_charset
>     self._payload = charset.body_encode(self._payload)
>   File "c:\python24\lib\email\Charset.py", line 366, in body_encode
>     return email.base64MIME.body_encode(s)
>   File "c:\python24\lib\email\base64MIME.py", line 136, in encode
>     enc = b2a_base64(s[i:i + max_unencoded])
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in 
> position 40: ordinal not in range(128)

...and I'm still left with this problem...

Has no-one ever successfully generated a correctly formatted email with 
email.MIMEText where the message includes non-ascii characters?!

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From tim at tdw.net  Fri Sep  1 06:56:54 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 1 Sep 2006 11:56:54 +0100
Subject: Adding sender name to email
In-Reply-To: <9afea2ac0609010351y2fe3dddev33261f9d52a0bca0@mail.gmail.com>
References: <G51204832.381.112.1@mx-extra>
	<9afea2ac0609010351y2fe3dddev33261f9d52a0bca0@mail.gmail.com>
Message-ID: <9afea2ac0609010356r2d2d1d3aia1ac1a8d1f6278fe@mail.gmail.com>

On 01/09/06, Tim Williams <tim at tdw.net> wrote:
> On 1 Sep 2006 03:26:12 -0700, gillespie.amanda at gmail.com
> <gillespie.amanda at gmail.com> wrote:
> > How do I add a Sender name to the emails sent by the following script:
> >
> add the line
>
> writer.addheader("From", a_sender_address)
>
> and you should also have
>
> writer.addheader("To", some_recipient_address(es)_as_a_string)
>
> The smtp sender & recipients do not relate to the sender & recipients
> in the email itself,  Often they are the same, but they don't have to
> be.
>

as an afterthought,  you should also add date & msg-id headers, or
your emails may fall foul of spam-filters.


-- 

Tim Williams


From jerry.levan at gmail.com  Sat Sep 16 22:19:02 2006
From: jerry.levan at gmail.com (jerry.levan at gmail.com)
Date: 16 Sep 2006 19:19:02 -0700
Subject: tcl list to python list?
Message-ID: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>

Hi,

I have a file that contains a "tcl" list stored as a string.  The list
members are
sql commands ex:
 { begin { select * from foo
                where baz='whatever'}
  {select * from gooble } end
  { insert into bar values('Tom', 25) } }

I would like to parse the tcl list into a python list...

Any suggestions ( I am running Tkinter...)

Jerry



From insyte at gmail.com  Tue Sep 19 11:38:09 2006
From: insyte at gmail.com (insyte at gmail.com)
Date: 19 Sep 2006 08:38:09 -0700
Subject: Threads blocking on OpenBSD w/ Python 2.4.2
In-Reply-To: <1158608907.994418.260970@e3g2000cwe.googlegroups.com>
References: <1158608907.994418.260970@e3g2000cwe.googlegroups.com>
Message-ID: <1158680289.035695.18560@m7g2000cwm.googlegroups.com>


insyte at gmail.com wrote:
> I'm attempting to write a faily simple threaded app that fires off a
> thread to select() on a FIFO while the main loop handles data read from
> that pipe and a few other tasks.  For some reason, calls to
> time.sleep() seem to block until the first time data is dumped into the
> pipe.  Clearly, I could work around this quite easily by "priming the
> pipe" as it were with a bit of garbage data.  However, I'd rather
> understand the problem.

I've verified the same behavior with Python 2.5.

-Ben



From rogue_pedro at yahoo.com  Fri Sep  1 22:28:34 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 1 Sep 2006 19:28:34 -0700
Subject: disgrating a list
In-Reply-To: <1157149768.698178.95060@b28g2000cwb.googlegroups.com>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
	<1157149768.698178.95060@b28g2000cwb.googlegroups.com>
Message-ID: <1157164114.122047.169230@m79g2000cwm.googlegroups.com>

jwaixs wrote:
> Thank you for all your reply and support. Neil's fits the most to me. I
> shrinked it to this function:
>
> def flatten(x):
>     for i in range(len(x)):
>         if isinstance(x[i], list):
>             x[i:i+1] = x[i]
>
> Thank you all again. If someone could find even a cuter way, I'd like
> to see that way.
>
> Noud Aldenhoven

That version's broken, but this version works (but only with lists, of
course):

def flatten(x):
    i, length = 0, len(x)
    while i < length:
        n = x[i]
        if isinstance(n, list):
            x[i:i+1] = n
            length += len(n) - 1
        else:
            i += 1

x = [1, [2, 3, [[]], 4], [[5, 6, 7], [], 8, [9]], 10, [11]]
flatten(x)
print x


Prints:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]


You can't increment the index until you're sure you're x[i] isn't a
list, and you have to keep track of the length of x as you go (that's
why your for loop is broken.)

Peace,



From gagsl-py at yahoo.com.ar  Tue Sep 12 01:11:02 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 02:11:02 -0300
Subject: are there any lib for receive hotmail ?
In-Reply-To: <44FDA035.3030203@tim.thechases.com>
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>
	<ONXKg.8550$o42.6314@tornado.texas.rr.com>
	<1157467698.407373.273750@d34g2000cwd.googlegroups.com>
	<4m5kf4F4hppiU1@uni-berlin.de> <44FDA035.3030203@tim.thechases.com>
Message-ID: <7.0.1.0.0.20060912020559.03929c80@yahoo.com.ar>

At Tuesday 5/9/2006 13:05, Tim Chase wrote:

> > And receiving hotmail (or any outher webmail) using scraping
> > techniques is a daunting task, to say the least - you should
> > forget about that IMHO.
>
>There's a perl project called "gotmail" that will do the scraping

Freepops does that (and a lot more) - but it's not written in Python, 
it uses LUA.
http://www.freepops.org/
It puts a POP server on top of the webmail, letting you use your 
favorite mail program.
The Hotmail plugin works perfectly for me.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From nicogrubert at gmail.com  Thu Sep 21 07:08:24 2006
From: nicogrubert at gmail.com (Nico Grubert)
Date: Thu, 21 Sep 2006 13:08:24 +0200
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <4510381F.7040804@v.loewis.de>
References: <mailman.266.1158668255.10491.python-list@python.org>
	<4510381F.7040804@v.loewis.de>
Message-ID: <451272A8.5030303@gmail.com>

> Several changes have been made to Python 2.4 and 2.5 to support
> AMD64-Linux better, and not all of these changes have been
> incorporated into Python 2.3, as this software is no longer
> maintained.

> As others have said: you should really try to use the python 2.4
> that comes with the operating system. Can you share the reason why
> you have to use Python 2.3?

I actually should use the Python 2.3.5 for an application server called 
  "Zope" and a Zope product that officially does not support the latest 
Zope version yet. The latest stable Zope version requires > Python 2.4.2 
so I'll installed Python 2.4.3. and I am trying to get it running.

Thanks for the tips.

Nico


From slowpoke115 at hotmail.com  Thu Sep  7 13:07:13 2006
From: slowpoke115 at hotmail.com (Kim)
Date: Thu, 07 Sep 2006 17:07:13 GMT
Subject: Random image downloader for newsgroups (first script)
Message-ID: <5lYLg.8769$a9.2590@fe2.news.blueyonder.co.uk>

Random image downloader for specified newsgroup. Hi I'm writing a small script that will download random images from a specified newsgroup. I've imported yenc into the script but I can't open the image or save it. This is my first script so be gentle!

Heres the script


####random group downloader####
import nntplib
import string, random
import mimetools
import StringIO
import rfc822
import sys, base64
import os
import email
import errno
import mimetypes


SERVER = "news.server.co.uk" #Insert news server here
GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here

# connect to server
server = nntplib.NNTP(SERVER)

resp, count, first, last, name = server.group(GROUP)

for i in range(10):
    try:
        id = random.randint(int(first), int(last))
        resp, id, message_id, text = server.article(str(id))
    except (nntplib.error_temp, nntplib.error_perm):
        pass # no such message (maybe it was deleted?)
    else:
        break # found a message!
else:
    raise SystemExit

text = string.join(text, "\n")
file = StringIO.StringIO(text)

msg = mimetools.Message(file)

#display message information
#print "File type", "=>", msg.gettype()
#print "Encoding", "=>", msg.getencoding()
#print "plist", "=>", msg.getplist()

message = rfc822.Message(file)

for k, v in message.items():
    print k, "=", v

file = message.fp.read()

def yenc_decode(file):
    # <i>find body</i>
    while 1:
        line = file.readline()
        if not line:
            return None
        if line[:7] == "=ybegin":
            break
    # <i>extract data</i>
    buffer = []
    while 1:
        line = file.readline()
        if not line or line[:5] == "=yend":
            break
        if line[-2:] == "\r\n":
            line = line[:-2]
        elif line[-1:] in "\r\n":
            line = line[:-1]
        data = string.split(line, "=")
        buffer.append(string.translate(data[0], yenc42))
        for data in data[1:]:
            data = string.translate(data, yenc42)
            buffer.append(string.translate(data[0], yenc64))
            buffer.append(data[1:])
    return buffer
#the following should write to a text file
#inp = ("file","r")
#outp = open("text.txt","w")
#for line in file:
    #outp.write(line)
#print file
#outp.close()



--------------=  Posted using GrabIt  =----------------
------=  Binary Usenet downloading made easy =---------
-=  Get GrabIt for free from http://www.shemes.com/  =-



From skip at pobox.com  Thu Sep  7 17:08:39 2006
From: skip at pobox.com (skip at pobox.com)
Date: Thu, 7 Sep 2006 16:08:39 -0500
Subject: should urlparse return user and pass in separate components?
In-Reply-To: <1157662588.273505.316230@h48g2000cwc.googlegroups.com>
References: <1157662588.273505.316230@h48g2000cwc.googlegroups.com>
Message-ID: <17664.35415.227847.667644@montanaro.dyndns.org>


    metaperl> I personally would prefer that it be broken down a bit
    metaperl> further. What are existing opinions on this?

I believe there have been noises made in this direction, and not that long
ago.  If a backward-compatible way of solving this problem could be worked
out, I imagine this could go in 2.6.  If not, such a change would probably
have to wait until 3.0.  I'm sure there are plenty of applications in the
wild that rely on the current behavior.  You might try searching the bugs
and patches on SF to see if someone's already submitted a patch.  If so,
feel free to try it out and add a review comment.

Skip


From bearophileHUGS at lycos.com  Fri Sep  8 03:51:41 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 Sep 2006 00:51:41 -0700
Subject: Question about subclassing - version 2
In-Reply-To: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
Message-ID: <1157701901.506736.45610@p79g2000cwp.googlegroups.com>

Frank Millman, just a short note, more expert people can give you
better answers. There aren't abstract classes in Python. They are all
concrete. You may have classes with undefined methods (they may raise
NotImplementedError).
Multiple inheritance isn't supported by Java and Ruby, but it is
supported by C++ and Python, so you can use it in Python.
There are also ways of mixing methods. You may define methods, and then
lists of methods to add to your classes.

Bye,
bearophile



From cvanarsdall at mvista.com  Thu Sep 14 16:53:44 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Thu, 14 Sep 2006 13:53:44 -0700
Subject: How to convert a timedelta object to a string?
Message-ID: <4509C158.9010808@mvista.com>

Basically I used the datetime module and timedelta objects to calculate 
a difference between two times.  Now I'm trying to figure out how I make 
that time delta a string HH:MM:SS to show elapsed time.  I've spent tons 
of time looking at the module's documentation but I'm not seeing how 
those methods will help me.  Can anyone help me with this? 

Here's what I'm trying to do, assum that resultsDict is a dictionary of 
objects that have various pieces of information including a start time 
and a stop time that are strings which I extracted from a file in an 
earlier part of the program.  I use regEx to split up the hours, 
minutes, and seconds and create timedelta objects, which I then subtract 
to get the different.  What I need is to get the value in duration as 
HH:MM:SS as a string:


#There's lots of other code above this, but I just need help with this part
  timeRegex = re.compile(r'(\d\d):(\d\d):(\d\d)')
  for key in resultsDict.keys():
    if resultsDict[key].stop != None:
      parsedTime = timeRegex.match(resultsDict[key].start)
      startDelta = datetime.timedelta(seconds=int(parsedTime.group(3)), 
minutes=int(parsedTime.group(2)), hours=int(parsedTime.group(1)))
      parsedTime = timeRegex.match(resultsDict[key].stop)
      stopDelta = datetime.timedelta(seconds=int(parsedTime.group(3)), 
minutes=int(parsedTime.group(2)), hours=int(parsedTime.group(1)))
      duration = stopDelta - startDelta






Thanks,

-carl


-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From python.list at tim.thechases.com  Tue Sep 12 17:59:22 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 12 Sep 2006 16:59:22 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee75vr$tro$1@sea.gmane.org>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>	<mailman.384.1158087083.5279.python-list@python.org>	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>	<ee72uh$jca$1@sea.gmane.org>	<4507153C.9070401@tim.thechases.com>
	<ee75vr$tro$1@sea.gmane.org>
Message-ID: <45072DBA.9040206@tim.thechases.com>

>> "But honestly, boss, I didn't write this code!  It was my
>> evil alter-ego that puts VARCHAR values containing Gilbert &
>> Sullivan lyrics into the Amount_Due CURRENCY fields!"
>> 
> Hence the phrase "Going for a song"?

I am the very model of a modern major database,
For gigabytes of information gathered out in userspace.
For banking applications to a website crackers will deface,
You access me from console or spiffy user interface.

My multi-threaded architecture offers you concurrency,
And loads of RAM for caching things reduces query latency.
The data is correctly typed, a fact that I will guarantee,
Each datum has a data type, it's specified explicitly.

is-it-friday-yet'ly yers,

-tkc







From edreamleo at charter.net  Sun Sep  3 11:16:11 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Sun, 3 Sep 2006 10:16:11 -0500
Subject: regex matching rst code block?
Message-ID: <plCKg.1977$uv4.1386@newsfe02.lga>

Here is a little regular expression puzzle.  I wish a regex that matches an 
rst code block, that is,



'::' followed by a group of lines all indented by at least as much as the 
first non-blank line following the '::'



My guess is that this is not possible.  Can anyone prove me wrong :-)



Edward

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From jstroud at mbi.ucla.edu  Wed Sep 27 06:59:37 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 10:59:37 GMT
Subject: What's up with site.Quitter?
In-Reply-To: <mailman.794.1159354441.10491.python-list@python.org>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>	<efdcui$acr$1@news.albasani.net>	<BzsSg.16764$IA.13334@newssvr11.news.prodigy.com>
	<mailman.794.1159354441.10491.python-list@python.org>
Message-ID: <tQsSg.16767$IA.15676@newssvr11.news.prodigy.com>

skip at pobox.com wrote:
>     James> But then again, maybe the consistency I perceive for the rest of
>     James> __builtins__ is more or less illusory. This might have been the
>     James> point of Fredrik's question.
> 
> As I implied in my note, there is a difference between fundamental builtins
> like open and Exception, and convenience builtins like exit and license.  If
> you make that distinction and only really worry about consistency within the
> fundamental builtins I think you'll be on more solid ground.
> 
> Skip
> 

Thank you. I'm glad I'm learning something from what originally felt 
like a silly distraction (writing the syntax colorer generator).

James


From grybkin at gmail.com  Fri Sep 15 09:20:55 2006
From: grybkin at gmail.com (Gleb Rybkin)
Date: 15 Sep 2006 06:20:55 -0700
Subject: high level, fast XML package for Python?
Message-ID: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>

I searched online, but couldn't really find a standard package for
working with Python and XML -- everybody seems to suggest different
ones.

Is there a standard xml package for Python? Preferably high-level, fast
and that can parse in-file, not in-memory since I  have to deal with
potentially MBs of data. 

Thanks.



From ironfroggy at gmail.com  Mon Sep 18 16:08:31 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 16:08:31 -0400
Subject: why a main() function?
In-Reply-To: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
Message-ID: <76fd5acf0609181308u5ffc79a7o6948bd2a43755578@mail.gmail.com>

On 18 Sep 2006 12:40:00 -0700, beliavsky at aol.com <beliavsky at aol.com> wrote:
> I think I read a suggestion somewhere to wrap the code where a Python
> script starts in a main() function, so one has
>
> def main():
>     print "hi"
>
> main()
>
> instead of
>
> print "hi"
>
> What are the advantages of doing this?

It is useful both importating scripts without running them, for
debugging or reusing parts of them later, and also for adding small
test scripts to modules to allow them to be run for testing purposes.


From martin at v.loewis.de  Wed Sep 20 13:29:49 2006
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Wed, 20 Sep 2006 19:29:49 +0200
Subject: byte count unicode string
In-Reply-To: <mailman.321.1158749393.10491.python-list@python.org>
References: <mailman.321.1158749393.10491.python-list@python.org>
Message-ID: <45117A8D.3050109@v.loewis.de>

willie schrieb:
> Thank you for your patience and for educating me.
> (Though I still have a long way to go before enlightenment)
> I thought Python might have a small weakness in
> lacking an efficient way to get the number of bytes
> in a "UTF-8 encoded Python string object" (proper?),
> but I've been disabused of that notion.

Well, to get to the enlightenment, you have to understand
that Unicode and UTF-8 are *not* synonyms.

A Python Unicode string is an abstract sequence of
characters. It does have an in-memory representation,
but that is irrelevant and depends on what microprocessor
you use. A byte string is a sequence of quantities with
8 bits each (called bytes).

For each of them, the notion of "length" exists: For
a Unicode string, it's the number of characters; for
a byte string, the number of bytes.

UTF-8 is a character encoding; it is only meaningful
to say that byte strings have an encoding (where
"UTF-8", "cp1252", "iso-2022-jp" are really very
similar). For a character encoding, "what is the
number of bytes?" is a meaningful question. For
a Unicode string, this question is not meaningful:
you have to specify the encoding first.

Now, there is no len(unicode_string, encoding) function:
len takes a single argument. To specify both the string
and the encoding, you have to write
len(unicode_string.encode(encoding)). This, as a
side effect, actually computes the encoding.

While it would be possible to answer the question
"how many bytes has Unicode string S in encoding E?"
without actually encoding the string, doing so would
require codecs to implement their algorithm twice:
once to count the number of bytes, and once to
actually perform the encoding. Since this operation
is not that frequent, it was chosen not to put the
burden of implementing the algorithm twice (actually,
doing so was never even considered).

HTH,
Martin


From timothy.grant at gmail.com  Mon Sep 25 15:17:26 2006
From: timothy.grant at gmail.com (Timothy Grant)
Date: Mon, 25 Sep 2006 12:17:26 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
In-Reply-To: <1159194945.283831.236510@b28g2000cwb.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
	<1159194945.283831.236510@b28g2000cwb.googlegroups.com>
Message-ID: <e775286d0609251217n76bfe8f7of695cf5ac89d4279@mail.gmail.com>

On 25 Sep 2006 07:35:45 -0700, rdsteph at mac.com <rdsteph at mac.com> wrote:
> Metaperl,
>
> Steve makes a good point. Fredrik is one of the most important
> contributors of Python code, tools, etc and as far as I am concerned,
> that is so important that it gives him the right to be cranky from tiem
> to time.
>
> If somebody like me were to get cranky and negative, on the other hand,
> that would be unacceptable.
>
> Actual production of useful code is of paramount importance ;-))
>
> Ron Stephens

I just checked google groups and my first post to this newsgroup was
back in April of 98. I'd been lurking for likely a year prior to that.

That little bit of introduction is simply to say something I'm sure
Fredrik will hate to hear....

He's mellowed over the years.

Steve is 100% correct, if Fredrik says your wrong (even if he says it
not very nicely) You ought to stop and reconsider your opinion.

-- 
Stand Fast,
    tjg.


From apardon at forel.vub.ac.be  Wed Sep 13 02:51:55 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 13 Sep 2006 06:51:55 GMT
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
Message-ID: <slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>

On 2006-09-13, Carl Banks <pavlovevidence at gmail.com> wrote:
> metaperl wrote:
>> -->  python -i
>> >>> class = "algebra"
>>   File "<stdin>", line 1
>>     class = "algebra"
>>           ^
>> SyntaxError: invalid syntax
>> >>>
>>
>>
>> Why isn' t the parser smart enough to see that class followed by an
>> identifier is used for class definition but class followed by equals is
>> a simple assignment?
>
> Hmm.  Someone called "metaPERL" is asking why Python doesn't have a
> more complicated grammar.  Why does this not surprise me?  :)

Would a solution for this always make the grammer more complicated?

> Seriously, Python is that way deliberately.  The developers consider it
> a good design to reserve keywords.  It is not in any way considered a
> flaw, nor an oversight, nor a case of laziness.
>
> Besides, what you ask is impossible in general.  Consider this code:
>
> return(1,2,3)

This is just an idea of mine, nothing I expect python to adapt.
But just suppose the language allowed for words in bold. A word
in bold would be considered a reserved word, a word in non bold
would be an identifier. 

> Are you returning the tuple (1,2,3), or are you calling the function
> "return" with arguments 1,2,3?  There is no context-free grammar in the
> universe that can divine which one is meant.  It'd have to use context
> to even guess, and in a highly dynamic language like Python, you can
> never be wholly sure of the context.  (Is there an identifier named
> "return" in scope?  Don't know until you run the code...)

With my idea, you would just look whether "return" was written in
bold or not.

>> Also, I had a bug where I tried to set the attributes "user" and "pass"
>> in an object but "pass" would not work because it is a reserved word.
>> Again pass should be reserved in certain contexts but not others.
>>
>> Is Python 3k going to fix this sort of thing?
>
> Nope.  PEP 3099 (which lists changes that won't be made in Python
> 3000), states that the Python grammar will not be more complex than
> LL(1), and says that simple grammars are more desirable than complex
> ones.  There is no hope of this being "fixed".

This idea won't make python more complex than LL(1).

-- 
Antoon Pardon


From ironfroggy at gmail.com  Sun Sep 17 14:41:34 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Sun, 17 Sep 2006 14:41:34 -0400
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
Message-ID: <76fd5acf0609171141i2a4077e4te1e34505cf0286a2@mail.gmail.com>

On 17 Sep 2006 09:22:16 -0700, Ilias Lazaridis <ilias at lazaridis.com> wrote:
> I understand that I can use __metaclass__ to create a class which
> modifies the behaviour of another class.
>
> How can I add this metaclass to *all* classes in the system?
>
> (In ruby I would alter the "Class" class)

This is a terrible idea. When my, Joe Modulewriter, released my
library of AwesomeCoolClasses, i except my metaclass to be something
particular and if it starts getting wonky and I do anything hackery on
my end with the types, then the end-user's computer might 'splode!

What I am trying to say, is its a terrible idea to go changing other
peoples' classes at runtime without knowing the real affects of what
is going on. If you are just going to shoot yourself in the foot, why
should we even give you a gun?


From AbrahamLincolnIllinois at yahoo.com  Wed Sep 13 10:47:41 2006
From: AbrahamLincolnIllinois at yahoo.com (AbrahamLincolnIllinois at yahoo.com)
Date: 13 Sep 2006 07:47:41 -0700
Subject: Unit balancing
Message-ID: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>

Greetings!

I am working with a researcher who would be very happy if he could
include units in his calculations.  Then, if his complicated expression
didn't result in "kg/yr" the program would stop and point out his
error.

Does Python (or SciPy or ..) offer this feature?

Thanks for your help.  


               Abraham



From eurleif at ecritters.biz  Mon Sep 18 10:56:45 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Mon, 18 Sep 2006 10:56:45 -0400
Subject: Python programs always open source?
In-Reply-To: <mailman.227.1158581355.10491.python-list@python.org>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
Message-ID: <450eb358$0$19900$4d3efbfe@news.sover.net>

Ben Finney wrote:
> So long as you're not distributing some or all of Python itself, or a
> derivative work, the license for Python has no legal effect on what
> license you choose for your own work.

How many Python programs use nothing from the standard library?


From ldo at geek-central.gen.new_zealand  Fri Sep 22 03:53:53 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 22 Sep 2006 19:53:53 +1200
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<mailman.299.1158709371.10491.python-list@python.org>
	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
	<mailman.354.1158791333.10491.python-list@python.org>
Message-ID: <ef04oo$gcc$4@lust.ihug.co.nz>

In message <mailman.354.1158791333.10491.python-list at python.org>, Gabriel
Genellina wrote:

> ... a python string has both a length *and* a null terminator (for
> ease of interfacing C routines ...

How does that work for strings with embedded nulls? Or are the C routines
simply fooled into seeing a truncated part of the string?


From ldo at geek-central.gen.new_zealand  Tue Sep 26 06:34:24 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 22:34:24 +1200
Subject: Printing a percent sign
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>
	<efaq7s$rfd$6@lust.ihug.co.nz>
	<1159263309.699677.301130@m7g2000cwm.googlegroups.com>
Message-ID: <efavlm$6ek$2@lust.ihug.co.nz>

In message <1159263309.699677.301130 at m7g2000cwm.googlegroups.com>, John
Machin wrote:

> Lawrence D'Oliveiro wrote:
>> In message <1159230293.270822.50390 at d34g2000cwd.googlegroups.com>, John
>> Machin wrote:
>>
>> > 1. Reasoning: How do you get a literal "'" into an SQL string constant?
>> > How do you get a literal "\" into a Python string constant? How do you
>> > get a literal "$" into some *x shell command lines? Do you detect a
>> > pattern?
>>
>> None of which applies to escaping of % characters in format strings.
> 
> What I had in mind was:
> 
> where surname = 'O''REILLY'
> install_dir = "C:\\Python25"
> ...
> print "The interest rate is %.2f%% p.a." % (rate * 100.0)
> 
> the common pattern being that the problem character is doubled.

Which doesn't apply to the "$" character in *nix shell command lines.


From rupole at hotmail.com  Wed Sep 27 18:23:59 2006
From: rupole at hotmail.com (Roger Upole)
Date: Wed, 27 Sep 2006 18:23:59 -0400
Subject: How to get ip setting, dynamic ip or static ip?
References: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>
	<1158892362_9487@sp6iad.superfeed.net>
	<1159377361.763313.179530@m7g2000cwm.googlegroups.com>
Message-ID: <1159396061_1193@sp6iad.superfeed.net>

This means the unicode object contains characters that
can't be represented in the default encoding.  Try encoding it
in another character set, something like

adapter.Properties_['Caption'].Value.encode('mbcs')
(you may need to use a different codec)

      Roger


"kode4u" <kode4u at gmail.com> wrote in message news:1159377361.763313.179530 at m7g2000cwm.googlegroups.com...
> There are some errors in result:
>>>> import win32com.client
>>>> wmi=win32com.client.GetObject('winmgmts:')
>>>> adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
>>>> for adapter in adapters:
> ...     print adapter.Properties_['Caption'],
> adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']
> ...
> [00000001] Realtek RTL8139 Family PCI Fast Ethernet NIC True
> (u'169.254.52.213',)
> Traceback (most recent call last):
>  File "<input>", line 2, in <module>
>  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py", line
> 187, in __str__
>    return str(self.__call__())
> UnicodeEncodeError: 'ascii' codec can't encode characters in position
> 15-19: ordinal not in range(128)
>
> How to deal with it?
>
>
>
> Roger Upole wrote:
>> "kode4u" <kode4u at gmail.com> wrote in message news:1158844868.766047.73270 at b28g2000cwb.googlegroups.com...
>> > How to use python get my windows box's ip setting type? Dynamic ip, or
>> > static ip?
>> >
>> > If it's static ip, what's the exact value?
>> >
>>
>> You can use WMI to list properties of your network adapter(s):
>> import win32com.client
>> wmi=win32com.client.GetObject('winmgmts:')
>> adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
>> for adapter in adapters:
>>     print adapter.Properties_['Caption'], adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']
>>
>>        Roger
>>
>>
>>
>>
>> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
>> http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
>> ---= East/West-Coast Server Farms - Total Privacy via Encryption =---
>





From johnjsal at NOSPAMgmail.com  Tue Sep 19 10:42:40 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 14:42:40 GMT
Subject: Installing 2.5 with 2.4?
In-Reply-To: <4nadmaF9c3hpU1@uni-berlin.de>
References: <U0TPg.1$1n3.143@news.tufts.edu> <4nadmaF9c3hpU1@uni-berlin.de>
Message-ID: <AlTPg.2$1n3.27@news.tufts.edu>

Diez B. Roggisch wrote:
> John Salerno wrote:
> 
>> Hi all. Just curious, before I do it myself, about the best way to
>> install 2.5 if it's the only version I want to use. Should I uninstall
>> 2.4 first? Does 2.5 replace 2.4? I doubt the latter, but if I install
>> 2.5, does that mean I need to reinstall all the extensions I had for 2.4
>> again, or does 2.5 detect them somehow?
> 
> Without an OS given, difficult answer. Generally, you can assume that there
> is no need to ditch one version because you use another, they don't
> interfer with each other. Only which one is perceived as "current" might
> change and alter some behavior.
> 
> However, you have to install all extensions again, that is for sure. And
> most probably some of them won't work so far, as they might need some
> modification or at least time to make them available as binary.
> 
> Diez

Thanks for the answers guys. I'm using WinXP. I noticed that when I 
installed 2.5rc2, it wasn't automatically assigned as the default 
version of Python. I wasn't sure if this was just because it was an RC, 
or maybe I have to manually make 2.5 the default. But I will uninstall 
2.4 first anyway, so it shouldn't matter.

Can't wait to play around with it! :)


From george.sakkis at gmail.com  Tue Sep 26 13:45:15 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 10:45:15 -0700
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
	<1159291272.617534.177790@h48g2000cwc.googlegroups.com>
Message-ID: <1159292714.862469.228720@k70g2000cwa.googlegroups.com>

johnzenger at gmail.com wrote:

> def transform(seq, size):
>     i = 0
>     while i < len(seq):
>         yield tuple(seq[i:i+size])
>         i += size

Or for arbitrary iterables, not just sequences:

from itertools import islice
def transform(iterable, size):
     it = iter(iterable)
     while True:
         window = tuple(islice(it,size))
         if not window: 
	     break
         yield window

George



From acquiesce11 at yahoo.com.au  Mon Sep 18 11:03:42 2006
From: acquiesce11 at yahoo.com.au (Fransiska M Argasetya)
Date: Tue, 19 Sep 2006 01:03:42 +1000 (EST)
Subject: Multiping
Message-ID: <20060918150343.83893.qmail@web54702.mail.yahoo.com>

dear all
   
  i have the following code that keeps on pinging several sites infinitely
   
  i was wondering if anyone could help me out in how to make the results for each set of loops of the pings to be displayed in an excel file? i need to use the maximum and minimum delay for my project.
   
  thank you for any response
   
  =======================================================
   
  import threading
import os
import Queue
import time
from time import sleep
  def showResponse(args):
    """Pretty prints passed tuple to stdout"""
      ip, stdoutLi, threadName = args
    print '%s \t\t\t\t\t\n' % (ip)
      for line in stdoutLi:
        line = line.strip()
        if not line: continue
        print '\t' + line
    print '-'*72
  class Pinger(threading.Thread):
      def __init__(self, host, queue):
        threading.Thread.__init__(self)
        self.__host = host
        self.__queue = queue
        self.setDaemon(1)
      def run(self):
        pingCmd = "ping -n 10 -w 1000 " + self.__host
        childStdout = os.popen(pingCmd)
        result = (self.__host, childStdout.readlines(), self.getName())
        childStdout.close()
        self.__queue.put(result)
  
if __name__ == '__main__':
    hostLi = ['www.google.com','www.yahoo.co.uk']                         # assign 
    
    while 1:                            # infinite loop, 1 is always true
        q = Queue.Queue()
        startA = time.time()
        for host in hostLi:             # for every host in hostLi
            Pinger(host,q).start()
        for i in hostLi:
            showResponse(q.get())       # removes an item out of the list / queue
   
   
  =======================================================



 		
---------------------------------
On Yahoo!7
 Fuel Price Watch - Find and map the cheapest petrol prices in Australia   
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From ptmcg at austin.rr._bogus_.com  Sun Sep 17 19:52:00 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Sun, 17 Sep 2006 23:52:00 GMT
Subject: tcl list to python list?
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
	<CE4Pg.4266$vD2.1873@tornado.texas.rr.com>
	<3k70u3-3d8.ln1@lairds.us>
Message-ID: <AclPg.4515$vD2.429@tornado.texas.rr.com>

"Cameron Laird" <claird at lairds.us> wrote in message 
news:3k70u3-3d8.ln1 at lairds.us...
> In article <CE4Pg.4266$vD2.1873 at tornado.texas.rr.com>,
> Paul McGuire <ptmcg at austin.rr._bogus_.com> wrote:
>
<yet another post showing a pyparsing stab at a parsing problem, this time 
parsing Tcl lists>
>
> Noooooooooooooooooo!
>
> I'll be more precise:  pyparsing is quite wonderful, and I'm
> all in favor of clever demonstrations of its capabilities.  I
> don't think this is one, though; in fact, although I haven't
> yet paid enough attention to the original question to provide
> an example, I'm reasonably certain that the code offered above
> mishandles at least some data (Tcl syntax is different from
> what outsiders expect).
>
> Paddy's advice elsewhere in this thread is almost entirely
> correct.  Anyone who has imported Tkinter has all of Tcl avail-
> able immediately, so much the easiest, most reliable, most
> maintainable, and most lucid solution is simply to iterate in
> Tcl over the list, and construct thus the corresponding Python
> list.
>
> I'm willing to write either a correct implementation, or a
> counterexample with problematic data, if these sufficiently
> interest readers.  It'll be a day or two before I can make the
> time to be careful, though.

Cameron -

Er?  Thanks for the nice comments re: pyparsing, sometimes I feel a little 
self-conscious always posting these pyparsing snippets.  So I'm glad you 
clarified your intent with your "I'll be more precise" paragraph.  But I'm 
not sure I see the reason for an 18-O "No!"

"Outsider"?  I'm no stranger to Tcl (although I *am* a bit rusty).  In the 
90's I worked for several years with a script-based process control system 
for semiconductor manufacturing, in which we used Tcl for customer-defined 
control logic.  Tcl led me to appreciate the value of a scripting language, 
despite its clunky assignment syntax ("set x 1"), and "$"-happiness.  When I 
looked into Python a few years later, I remember thinking "Man, I wish we 
could have used Python instead."

I took a look at how accessible Tcl is using Tkinter.  It looks to me like 
one would need to:
- write a Tcl proc to recursively traverse a list, returning a stringified 
list in Python-like syntax (enclosing non-list items in ''s, separating with 
commas, nesting sublists with []'s, etc.)
- construct a string passing the OP's Tcl list string "sql  commands ex: 
..." to this method
- invoke Tkinter.Tk().eval on this string to perform the Tcl traversal
- invoke Python's eval function on the returned string to get an actual 
list.

Did I get that right?  Or is there another, simpler back door into Tcl from 
Tkinter?

I'll confess, I wrote my sample code based on the sample text posted by the 
OP, without much extra syntax (such as negative integers or floating-point 
values).  So here is a version with a bit broader coverage:
======================
tcl = """sql commands ex:
 { begin { select * from foo
                where baz='whatever'}
  {select * from $gooble } { } end
  { insert into bar values('Tom', 25) } }"""

from pyparsing import *

tcllist = Forward()
element = quotedString | Combine(Optional("$") + Word(alphas,alphanums+"_")) 
| \
          Combine(Optional(oneOf(list("+-")))+ Word(nums) + "." + 
Optional(Word(nums)) ) | Word(nums+"+-",nums) | \
          oneOf( list(r"(),.+=`~!@#$%^&*-|\?/><;:") ) | Group( '{' + tcllist 
+ '}' )
tcllist << ZeroOrMore( element )

import pprint
pprint.pprint( tcllist.parseString(tcl).asList() )
======================

This should handle empty lists, signed integers and reals, and variables 
with leading '$' signs.

Before putting too much effort into problematic counter-example data, it 
might be a good idea to check with the OP, to see what types of values are 
likely to come up in practice.  Given that c.l.py posting is only a 
spare-time activity (probably so for you, too), I wouldn't want to waste 
time on the be-all-and-end-all Tcl list parser that handles cases the OP 
wont run into.

-- Paul 




From brian at sweetapp.com  Tue Sep 26 11:43:47 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Tue, 26 Sep 2006 17:43:47 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehihk6.9o0.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<Xns984996E6BABCEduncanbooth@127.0.0.1>	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>	<mailman.672.1159275735.10491.python-list@python.org>	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>	<mailman.680.1159277904.10491.python-list@python.org>	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>	<mailman.687.1159280315.10491.python-list@python.org>	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>	<mailman.690.1159282116.10491.python-list@python.org>	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
Message-ID: <45194AB3.9070202@sweetapp.com>

Jon Ribbens wrote:
> In article <mailman.698.1159283878.10491.python-list at python.org>, Brian Quinlan wrote:
>> A summary of this pointless argument:
> 
> Your summary seems pretty reasonable, but please note that later on,
> the thread was not about cgi.escape escaping (or not) quote
> characters (as described in your summary), but about Fredrik arguing,
> somewhat incoherently, that it should have to take character encodings
> into consideration.

And, of course, about you telling people that their explanations are not 
good enough :-)

BTW, I am curious about how you do unit testing. The example that I used 
in my summary is a very common pattern but would break in cgi.escape 
changed it's semantics. What do you do instead?

Cheers,
Brian


From chrisBrat at gmail.com  Tue Sep  5 16:24:03 2006
From: chrisBrat at gmail.com (Chris Brat)
Date: 5 Sep 2006 13:24:03 -0700
Subject: Better way to replace/remove characters in a list of strings.
In-Reply-To: <44fcb9ca$0$31422$626a54ce@news.free.fr>
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
	<edh04n$o0g$1@news.lrz-muenchen.de>
	<1157367752.806830.317400@m79g2000cwm.googlegroups.com>
	<1157374314.068280.302480@e3g2000cwe.googlegroups.com>
	<44fcb9ca$0$31422$626a54ce@news.free.fr>
Message-ID: <1157487843.814540.205910@i42g2000cwa.googlegroups.com>

Hi

Wouldn't this only cause problems with large lists - for once off
scripts with small lists it doesn't seem like a big issue to me.

Regards,
Chris

Bruno Desthuilliers wrote:
> Chris Brat a ?crit :
> > Thanks, thats exactly what I was looking for - very neat.
> >
> Just note that both solutions rebind the name to a newly constructed
> list instead of modifying the original list in place. This is usually
> the RightThing(tm), but sometimes one wants an in-place modification.



From bulliver at gmail.com  Sun Sep  3 03:19:17 2006
From: bulliver at gmail.com (Darren Kirby)
Date: Sun, 3 Sep 2006 00:19:17 -0700
Subject: Twisted vs POS (Plain-old sockets)
Message-ID: <d416abde0609030019u5a75d6b1mdc809c88284370da@mail.gmail.com>

Hey all,

I have a (FOSS) project here that I am about to start that requires TCP
networking support, and in fact, will require me to design and implement a
(text based) protocol from scratch.

I have been playing with Twisted today and managed to get a simple
client/server talking to each other. However, the twisted framework does
seem
very complex, and includes many, many, features I will never need. The docs
seem a little lacking (or perhaps just confusing) as well. Twisted's good
points are that it will save me from having to write many things from
scratch, asynchronous networking being the biggie.

I guess I am wondering if given the fact I need a custom protocol, and need
to
talk TCP/IP should I stick with twisted or just use plain old sockets and
build it myself? Is there a third option I should consider? Have others
found
themselves in this situation? Thoughts? Comments? I am really just fishing
for opinions here...

If it makes a difference: Depending on performance parts of this app may
well
end up as a prototype for a final (...alternative?) C++ implementation.

Thanks for consideration,

 -d
-- 
darren kirby :: Part of the problem since 1976 :: http://badcomputer.org
"...the number of UNIX installations has grown to 10, with more expected..."
- Dennis Ritchie and Ken Thompson, June 1972
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From JohnRoth1 at jhrothjr.com  Tue Sep 26 08:59:05 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 26 Sep 2006 05:59:05 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <slrnehi6qc.rcu.apardon@rcpc42.vub.ac.be>
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
	<mailman.658.1159265280.10491.python-list@python.org>
	<slrnehi6qc.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <1159275544.730927.101160@k70g2000cwa.googlegroups.com>


Antoon Pardon wrote:
>
> I find this a bit oddly worded. Now the "may always reuse" phrase
> suggests this is not an obligation and I can certainly understand
> that in the case of integers. But when you enumerate examples you
> include None and Booleans, creating the suggestion these don't
> have to be implemented as singletons either and that there can be
> more than one None, True and False object. Now I probably just
> misunderstand, but I'm wondering, is there somewhere in the language
> reference that specifies these have to be singletons?

Yes. The topic "The standard Type Hierarchy" in the
Language reference specifies this exactly.

John Roth
> 
> -- 
> Antoon Pardon



From steve at holdenweb.com  Thu Sep 14 07:16:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 14 Sep 2006 07:16:51 -0400
Subject: Looking for the Perfect Editor
In-Reply-To: <4509211A.5090400@freakmail.de>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>	<mailman.48.1158174903.10491.python-list@python.org>	<1158183392.526021.212220@d34g2000cwd.googlegroups.com>	<Y94Og.938$TV3.21@newssvr21.news.prodigy.com>
	<4509211A.5090400@freakmail.de>
Message-ID: <eebdlo$qup$1@sea.gmane.org>

Wildemar Wildenburger wrote:
>>Hi Stu und "Willie",
[...]
> 
>>Which plugins give me a good start for scientific stuff?
> 
> Er ... I don't know. What do you mean by 'scientific stuff'?

You know, stitching body parts together from different corpses and 
trying to animate them with lightning, inventing potions that completely 
cjange the personailty, that kind of thing. People have been doing it 
for hundreds of years ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Fri Sep 22 21:18:52 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 21:18:52 -0400
Subject: Global module variables as default parameters
In-Reply-To: <87r6y3zn4j.fsf@peds-pc311.bsd.uchicago.edu>
References: <mailman.464.1158937836.10491.python-list@python.org>
	<87r6y3zn4j.fsf@peds-pc311.bsd.uchicago.edu>
Message-ID: <ef220a$km9$2@sea.gmane.org>

John Hunter wrote:
>>>>>>"Christoph" == Christoph Haas <email at christoph-haas.de> writes:
> 
> 
>     Christoph> Hi, list...  I wondered if it's possible to use global
>     Christoph> (module) variables as default parameters. A simple
>     Christoph> working example:
> 
>     Christoph> ----------------------------------------
>     Christoph> #!/usr/bin/python
> 
>     Christoph> globalvar = 123
> 
>     Christoph> def test(foo=globalvar): print foo
> 
> kwargs defaults are initialized a module load time, not at function
> call time.  The standard idiom is
> 
> def test(foo=None): 
>     if foo is None: foo = globalvar
>     print foo
> 
> JDH

That's true when the functions are declared at the outer level of the 
module, but don't overlook the fact that a function can be declared 
inside another function or method call (and even returned as (part of) 
the result of that call).

It would be more accurate to say that the default argument values are 
bound when the def statement is executed.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From pavlovevidence at gmail.com  Sun Sep 10 19:44:16 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 10 Sep 2006 16:44:16 -0700
Subject: Refactoring Dilemma
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
	<1157915428.352721.163680@e3g2000cwe.googlegroups.com>
Message-ID: <1157931856.922736.144620@h48g2000cwc.googlegroups.com>

George Sakkis wrote:
> Kamilche wrote:
> > '''
> > I'm in the middle of a refactoring dilemma.
> > I have several singletons that I'm turning into modules, for ease of
> > access.
> > The usual method is noted as 'Module 1' below.
> > The new method is noted as 'Module 2'.
> > Is there any reason NOT to do this that I may be unaware of?
> > It's easier than remembering to declare global variables at the top of
> > the function.
> > '''
> >
> > # ----------- Module 1.py ------------
> > # Normal module processing
> > var = 0
> >
> > def MyRoutine():
> >     global var
> >     var = 1
> >
> > MyRoutine()
> > print var
> >
> >
> > # ----------- Module 2.py ------------
> > # 'Self' module processing
> > import sys
> > var = 0
> > self = sys.modules[__name__]
> >
> > def MyRoutine():
> >     self.var = 1
> >
> > MyRoutine()
> > print var
>
>
> What's wrong with
> <code>
> def MyRoutine():
>      return 1
>
> var = MyRoutine()
> </code>
> ?


Kamilche simplified things in his example that obscured the main use
case.  Short story is, var is considered a state of the module, and
MyRoutine() is designed to be called from outside the module to modify
the state.  Your suggestion can only modify the state of the module
from within, so it won't do.

More detailed discussion:

A common piece of advice when people ask "how can I implement a
singleton in Python" is to use a module.  A module, after all, is a
singleton object.

But there's a big problem using a module as a singleton: you need to
use then global statement to rebind module-level variables.  Which
means that if you want your module to have lots of modifyable state,
most likely you'll have to use a bunch global statements.  And that's a
major pain in the neck when you have to do it a lot and in many
functions.

In these cases, it would be nice if a module could access its own state
in the same way that an instance does, that is, as an attribute.  My
approach of using a decorator to pass in a module proxy, and Kamilche's
approach  of binding the module object to self, both accomplish this.
Internally, the module behaves very much like a class instance.
Functions in the module act almost exactly like bound methods, and
module-level variables act like instance attributes.  The difference
between writing a module and a singleton class thus becomes mostly a
matter of indentation.

In fact, when I made a major switch from using singleton classes to
modules, I was able to change it by dedenting once, and pasting a
@modmethod decoration above each method, with very few other changes.

Carl Banks

Carl Banks



From onirik79 at yahoo.it  Sat Sep 23 06:05:45 2006
From: onirik79 at yahoo.it (Andrea)
Date: 23 Sep 2006 03:05:45 -0700
Subject: Automatic import PEP
In-Reply-To: <mailman.491.1158981359.10491.python-list@python.org>
References: <mailman.491.1158981359.10491.python-list@python.org>
Message-ID: <1159005945.520844.220950@i42g2000cwa.googlegroups.com>

> Opinions?

Great :)



From altemurbugra at gmail.com  Tue Sep 26 19:48:44 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 26 Sep 2006 16:48:44 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <mailman.657.1159264862.10491.python-list@python.org>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.643.1159255733.10491.python-list@python.org>
	<1159263438.026179.145120@b28g2000cwb.googlegroups.com>
	<mailman.657.1159264862.10491.python-list@python.org>
Message-ID: <1159314523.951825.174470@m7g2000cwm.googlegroups.com>

I dont mean google
i dont mean onelook.com

these are only examples

i hop eyou understand what i mean



From vinay_sajip at yahoo.co.uk  Mon Sep  4 20:22:29 2006
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: 4 Sep 2006 17:22:29 -0700
Subject: inheritance needed in program configuration - config module or
	python oo?
References: <1157195428.593487.268960@74g2000cwt.googlegroups.com>
Message-ID: <1157415749.306062.5460@74g2000cwt.googlegroups.com>

metaperl wrote:

> Inheritance needed in app configuration
> =============================
[snip]
> When it comes to HTML generation, every form of mini-language that I've
> seen does not appeal to me. I use DOM to rewrite HTML. I hate the
> limitations of mini-languages and prefer full-strength programming
> languages. Now it is appearing that application configuration is yet
> one more place to avoid mini-language convenience and simply use a
> programming language for the task.

You could try my hierarchical config module:

http://www.red-dove.com/python_config.html

which is intended for configuring hierarchies of application
components.

Best regards,

Vinay Sajip



From Eric_Dexter at msn.com  Sun Sep  3 12:20:03 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 3 Sep 2006 09:20:03 -0700
Subject: pdf to hhp for boa-constructor help
Message-ID: <1157300403.398414.220560@m79g2000cwm.googlegroups.com>

     Is there a way to convert from .pdf to hhp so that I can add help
files to boa constructor..  adding html to it would also be helpfull

http://www.dexrow.com



From ldo at geek-central.gen.new_zealand  Sat Sep 23 18:40:26 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 10:40:26 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<451541db$0$4171$ba624c82@nntp02.dk.telia.net>
Message-ID: <ef4d30$8h4$1@lust.ihug.co.nz>

In message <451541db$0$4171$ba624c82 at nntp02.dk.telia.net>, Anders J. Munch
wrote:

> Lawrence D'Oliveiro wrote:
>> Why doesn't MySQLdb provide a function like this:
>> 
>> def QuoteSQL(Str, DoWild) :
>>     """returns a MySQL string literal which evaluates to Str. Needed
>>     for those times when MySQLdb's automatic quoting isn't good
>>     enough."""
> 
> Presumably because you're expected to use placeholders.  When is that
> not good enough?

Here's an example:

def QuoteSQLList(TheList) :
    """returns a MySQL list containing the items of TheList, suitable
    for use in an "in" clause."""
    return \
        "(" + ", ".join([QuoteSQL(Str, False) for Str in TheList]) + ")"
#end QuoteSQLList

>>         elif Ch == "'" or Ch == "\"" or Ch == "\\" :
>>             Ch = "\\" + Ch
> 
> Always sad to see an SQL DBMS willfully violate the SQL standard.

Why is that a violation of SQL?


From bill.scherer at verizonwireless.com  Mon Sep 11 08:51:42 2006
From: bill.scherer at verizonwireless.com (Bill Scherer)
Date: Mon, 11 Sep 2006 08:51:42 -0400
Subject: efficient text file search.
In-Reply-To: <NYOBGCEXSMTP20WO6hm000003b5@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
References: <NYOBGCEXSMTP20WO6hm000003b5@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
Message-ID: <45055BDE.3080805@verizonwireless.com>

noro wrote:

>Is there a more efficient method to find a string in a text file then:
>
>f=file('somefile')
>for line in f:
>    if 'string' in line:
>         print 'FOUND'
>
>?
>
>BTW:
>does "for line in f: " read a block of line to te memory or is it
>simply calls f.readline() many times?
>
>thanks
>amit
>  
>
If your file is sorted by some key in the data, you can build a very 
fast binary search with mmap in Python.


From paul at boddie.org.uk  Wed Sep 27 12:45:59 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 27 Sep 2006 09:45:59 -0700
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.643.1159255733.10491.python-list@python.org>
	<1159263438.026179.145120@b28g2000cwb.googlegroups.com>
	<mailman.657.1159264862.10491.python-list@python.org>
	<1159314523.951825.174470@m7g2000cwm.googlegroups.com>
	<1159321413.386979.142130@m7g2000cwm.googlegroups.com>
Message-ID: <1159375559.623732.223280@e3g2000cwe.googlegroups.com>

George Sakkis wrote:
> altemurbugra at gmail.com wrote:
>
> > I dont mean google
> > i dont mean onelook.com
> >
> > these are only examples
> >
> > i hop eyou understand what i mean
>
> Apparently, *you* don't understand what they're trying to tell you. It
> roughly boils down to the following:

If we just step back from the brink for a moment and give the
questioner the benefit of the doubt - that the exercise merely involves
automating some kind of interactions that would otherwise require lots
of manual messing around piloting a browser, rather than performing
some kind of bulk "suck down" of an entire site's information - then it
is obviously possible to use the following techniques:

  * Use a well-known mirroring or archiving tool such as wget.
  * Use various testing tools, some of which are written in Python.
  * Use urllib, urllib2 or httplib plus an HTML or XML parser in your
    own program.
  * Automate a Web browser using some off-the-shelf program.
  * Use various automation mechanisms provided by your environment
    (eg. COM, DCOP), possibly with Python libraries (eg. PAMIE [1],
    KPart Plugins [2]).

Various sites forbid wget and friends as a rule, understandably, but
there are sometimes reasons why you might want to use various tools to
automate a procedure involving lots of data which would waste a huge
amount of time if done manually. Perhaps you might have mail residing
in a Webmail system which can't be extracted via any process other than
reading all the messages in a browser, for example, or perhaps your
favourite Internet applications don't provide decent shortcuts to the
information you need, instead believing that it's all about the
"experience": surfing around watching all the animated adverts.
Automation and related technologies can legitimately help users regain
control of their Internet-resident data and make better use of the
services around it.

Paul

[1] http://pamie.sourceforge.net/
[2] http://www.boddie.org.uk/python/kpartplugins.html



From crystalattice at gmail.com  Wed Sep 27 13:11:07 2006
From: crystalattice at gmail.com (crystalattice)
Date: 27 Sep 2006 10:11:07 -0700
Subject: Advice for a novice on making ambitious cross-platform GUI app
In-Reply-To: <o7eSg.29$1n3.421@news.tufts.edu>
References: <1159200780.240509.270660@i42g2000cwa.googlegroups.com>
	<1159293097.000144.267460@k70g2000cwa.googlegroups.com>
	<o7eSg.29$1n3.421@news.tufts.edu>
Message-ID: <1159377067.405377.167510@i3g2000cwc.googlegroups.com>


John Salerno wrote:
> crystalattice wrote:
>
> > I'm working on making an
> > RPG from scratch and I'm the only one doing it, but I'm learning a lot
> > and just keep asking questions.
>
> Intriguing. Any tips on how you are going about learning the game
> programming aspects of doing this? I took a look at PyGame, but it
> seemed a little over my head.
Currently I'm mostly just learning the various aspects of Python and
OOP.  It wasn't until a few months ago that OOP finally "clicked" for
me; before that I only did procedural programming.

My current programming for my game is just character generation, which
is relatively easy.  I'm currently trying to decide on how to best save
the data (pickle, database, standard file, etc.) so it's not like I've
created a game engine or anything real difficult.

Last month I found a book called "Game Programming with Python".  I'm
only in the fourth chapter but it appears to have good insight.  It
discusses the normal parts of game programming, like audio, graphics,
game engine, etc. while also talking about when and where to use
Python, such as just as a game script or how to write the whole thing
in Python.

I'm finding it very interesting, especially since it talks about
various libraries (such as PyGame) to help out your programming chores.
 If you're interesting in using Python in any way with games, I'd
recommend getting it.

On a side note, I found it for "free" at a place called ebrary
(http://shop.ebrary.com).  It only costs $5 to register but you can
"check out" as many books as you want.  The $$ is  in case you want to
copy or print from the books; it's a  deal w/ the publishers so they
can still get some money from the books.

ebrary also has many other game programming books, such as AI
development, "The Indie Game Development Survival Guide", 3d
programming, etc.  It's a good site if you want to look at a book
before you buy it.



From bearophileHUGS at lycos.com  Fri Sep 22 15:44:57 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 22 Sep 2006 12:44:57 -0700
Subject: Newbie RE question
In-Reply-To: <1158950848.665561.143020@i3g2000cwc.googlegroups.com>
References: <1158950663.902262.235410@m73g2000cwd.googlegroups.com>
	<1158950848.665561.143020@i3g2000cwc.googlegroups.com>
Message-ID: <1158954297.810877.237830@m7g2000cwm.googlegroups.com>

T:
> I meant to say:  Search for any character in r'/\:*?"<>|' in a string

You don't need a RE to solve such problem. There are many ways to solve
it, this is one of the simpler (Python 2.4+):

>>> chars = set(r'/\:*?"<>|')
>>> s1 = "is this a sample string?"
>>> bool( set(s1) & chars )
True
>>> s2 = "this is a sample"
>>> set(s2).intersection(r'/\:*?"<>|')
set([])

Bye,
bearophile



From gagsl-py at yahoo.com.ar  Tue Sep 12 03:25:27 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 04:25:27 -0300
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <1157647484.648546.157210@i42g2000cwa.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
	<1157642876.793030.134030@p79g2000cwp.googlegroups.com>
	<45003CCC.4050804@websafe.com>
	<1157644621.982238.11580@e3g2000cwe.googlegroups.com>
	<1157645461.166427.263150@m73g2000cwd.googlegroups.com>
	<mailman.130.1157646878.5279.python-list@python.org>
	<1157647484.648546.157210@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060912042401.03b21fc0@yahoo.com.ar>

At Thursday 7/9/2006 13:44, Omar wrote:

>I'm working through a tutorial,
>http://swaroopch.info/text/Byte_of_Python:Control_Flow, and I sorta
>can't get through the tutorial without overcoming these little
>speedbumps.  This is why I'm asking these questions.

Have you read the Python tutorial which comes with the documentation?
You can read it online at <http://docs.python.org/tut/tut.html>



Gabriel Genellina
Softlab SRL 


	

	
		
__________________________________________________ 
Pregunt?. Respond?. Descubr?. 
Todo lo que quer?as saber, y lo que ni imaginabas, 
est? en Yahoo! Respuestas (Beta). 
?Probalo ya! 
http://www.yahoo.com.ar/respuestas 



From mensanator at aol.com  Sat Sep  9 02:18:34 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 8 Sep 2006 23:18:34 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
	<mailman.185.1157755145.5279.python-list@python.org>
Message-ID: <1157782714.618336.148840@e3g2000cwe.googlegroups.com>

Paul McNett wrote:
> mensanator at aol.com wrote:
> > Do you know what INNER JOIN means?
> >
> > Do you know how important it is to a relational database?
> >
> > Can you explain how an INNER JOIN can even work, in theory,
> > with dynamic data types?
>
> Let's stop the pissing contest and just see how it works. After all,
> this is Python and we can easily just try it out. Here's my example.
> Please tell me how this causes unexpected results,

When we use a best case scenario, we get what we expect.

> and why it isn't SQL.

It isn't SQL simply because SQL won't let you insert text
into a numeric field.

> Please modify my example to get it to cause a catastrophe,

Make it worse case? Sure, I can do that.

> and post it
> here so we can see the errors of our ways and be properly humbled.

#-- Preliminaries:
## from pysqlite2 import dbapi2 as sqlite
import sqlite3 as sqlite
## con = sqlite.connect("test.db")
con = sqlite.connect(":memory:")
cur = con.cursor()

#-- Create 3 tables for a M:M relationship between customers
#-- and categories:
cur.execute("create table customers (id integer primary key
autoincrement, name char)")
cur.execute("create table categories (id integer primary key
autoincrement, name char)")
cur.execute("create table cust_cat (id integer primary key
autoincrement, cust_id integer, cat_id integer)")

##    cur.execute("create table cust_cat (id integer, cust_id,
cat_id)")
##    cur.execute("create table customers (id, name char)")
##    cur.execute("create table categories (id, name char)")
##
##    # Ok, THIS fails. Because the JOINs were originally made against
fields
##    # that were cast as integers so the 'hinting' of sqlite must
operate in a JOIN
##    # allowing ints to JOIN against strings. Take away the casts and
the JOIN
##    # fails. Unfortunately, not every situation will involve JOINing
primary keys.
##
##    [(1, u'Ziggy Marley'), (2, u'David Bowie')]
##    [(1, u'Glam Rock'), (2, u'Nuevo Reggae'), (3, u'Male Singers')]
##    [(None, 1, 3), (None, 1, u'2'), (None, u'2', u'1'), (None, u'2',
u'3')]
##
##    [(1, u'Ziggy Marley', 3, u'Male Singers')]
##    []
##    []
##    []
##    []
##    [(1, u'Ziggy Marley', 3, u'Male Singers')]


#-- Insert some test data into customer and categories:
cur.execute("insert into customers (name) values ('Ziggy Marley')")
cur.execute("insert into customers (name) values ('David Bowie')")
cur.execute("insert into categories (name) values ('Glam Rock')")
cur.execute("insert into categories (name) values ('Nuevo Reggae')")
cur.execute("insert into categories (name) values ('Male Singers')")

## # if int cast removed, manually insert ids
##cur.execute("insert into customers (id, name) values (1,'Ziggy
Marley')")
##cur.execute("insert into customers (id, name) values (2,'David
Bowie')")
##cur.execute("insert into categories (id, name) values (1,'Glam
Rock')")
##cur.execute("insert into categories (id, name) values (2,'Nuevo
Reggae')")
##cur.execute("insert into categories (id, name) values (3,'Male
Singers')")

cur.execute("select * from customers")


#-- Take a look at the data (and retrieve the pk's):
print cur.fetchall()
#[(1, u'Ziggy Marley'), (2, u'David Bowie')]
cur.execute("select * from categories")
print cur.fetchall()
#[(1, u'Glam Rock'), (2, u'Nuevo Reggae'), (3, u'Male Singers')]


#-- Relate some customers to some categories. Note how I send strings
#-- in some places and ints in others:
##cur.execute("insert into cust_cat (cust_id, cat_id) values (1, 3)")
##cur.execute("insert into cust_cat (cust_id, cat_id) values (1, '2')")

##cur.execute("insert into cust_cat (cust_id, cat_id) values ('2',
'1')")
##cur.execute("insert into cust_cat (cust_id, cat_id) values ('2', 3)")


##cc = [(1,3),(1,'2'),('2','1'),('2','3')]
cc = [(1,3),(1,'>2'),('>2','>1'),('>2','>3')]

##    # And this also fails (differently). The 'hinting' of sqlite that
operates
##    # during a JOIN only works if the string looks like an integer.
And, no,
##    # the use of the '>' is not a contrived example like 'fred'. I
often get a
##    # result like '>200' in what is supposed to be a numeric field.
##
##    [(1, u'Ziggy Marley'), (2, u'David Bowie')]
##    [(1, u'Glam Rock'), (2, u'Nuevo Reggae'), (3, u'Male Singers')]
##    [(1, 1, 3), (2, 1, u'>2'), (3, u'>2', u'>1'), (4, u'>2', u'>3')]
##
##    [(1, u'Ziggy Marley', 3, u'Male Singers')]
##    []
##    []
##    []
##    [(1, u'Ziggy Marley', 3, u'Male Singers')]
##    [(1, u'Ziggy Marley', 3, u'Male Singers')]

cur.executemany("insert into cust_cat (cust_id, cat_id) values
(?,?)",cc)
cur.execute("select * from cust_cat")
print cur.fetchall()

print

#-- Run some queries:
cur.execute("""
select     customers.id as cust_id,
           customers.name as cust_name,
           categories.id as cat_id,
           categories.name as cat_name
from       customers
inner join cust_cat
on         cust_cat.cust_id = customers.id
inner join categories
on         categories.id = cust_cat.cat_id
order by   2,4""")

print cur.fetchall()
#[(2, u'David Bowie',  1, u'Glam Rock'),
# (2, u'David Bowie',  3, u'Male Singers'),
# (1, u'Ziggy Marley', 3, u'Male Singers'),
# (1, u'Ziggy Marley', 2, u'Nuevo Reggae')]

cur.execute("""
select     customers.id as cust_id,
           customers.name as cust_name,
           categories.id as cat_id,
           categories.name as cat_name
from       customers
inner join cust_cat
on         cust_cat.cust_id = customers.id
inner join categories
on         categories.id = cust_cat.cat_id
where      categories.id = 1
order by   2,4""")

print cur.fetchall()
#[(2, u'David Bowie', 1, u'Glam Rock')]

cur.execute("""
select     customers.id as cust_id,
           customers.name as cust_name,
           categories.id as cat_id,
           categories.name as cat_name
from       customers
inner join cust_cat
on         cust_cat.cust_id = customers.id
inner join categories
on         categories.id = cust_cat.cat_id
where      categories.id = '1'
order by   2,4""")

print cur.fetchall()
#[(2, u'David Bowie', 1, u'Glam Rock')]

cur.execute("""
select     customers.id as cust_id,
           customers.name as cust_name,
           categories.id as cat_id,
           categories.name as cat_name
from       customers
inner join cust_cat
on         cust_cat.cust_id = customers.id
inner join categories
on         categories.id = cust_cat.cat_id
where      categories.id = '2'
order by   2,4""")

print cur.fetchall()
#[(1, u'Ziggy Marley', 2, u'Nuevo Reggae')]

cur.execute("""
select     customers.id as cust_id,
           customers.name as cust_name,
           categories.id as cat_id,
           categories.name as cat_name
from       customers
inner join cust_cat
on         cust_cat.cust_id = customers.id
inner join categories
on         categories.id = cust_cat.cat_id
where      categories.id = '3'
order by   2,4""")

print cur.fetchall()
#[(2, u'David Bowie',  3, u'Male Singers'),
# (1, u'Ziggy Marley', 3, u'Male Singers')]

cur.execute("""
select     customers.id as cust_id,
           customers.name as cust_name,
           categories.id as cat_id,
           categories.name as cat_name
from       customers
inner join cust_cat
on         cust_cat.cust_id = customers.id
inner join categories
on         categories.id = cust_cat.cat_id
where      categories.id = 3
order by   2,4""")

print cur.fetchall()
#[(2, u'David Bowie',  3, u'Male Singers'),
# (1, u'Ziggy Marley', 3, u'Male Singers')]



From skip at pobox.com  Tue Sep 26 15:23:55 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 26 Sep 2006 14:23:55 -0500
Subject: bsddb
In-Reply-To: <efbtoq$tfh$1@sea.gmane.org>
References: <efbtoq$tfh$1@sea.gmane.org>
Message-ID: <17689.32331.962595.835119@montanaro.dyndns.org>


    Marc> "DB_VERSION_MISMATCH: Database environment version mismatch --
    Marc> Program version 4.4 doesn't match environment version 186187776.0"
    Marc> DBError: -30971

I haven't used bsddb much recently, but in the past I think this usually
meant that the Sleepycat folks released a new version of their package with
a new file format.  You're probably trying to read an old format file with a
newer version of their package.  There is a db_update command that's part of
Berkeley DB itself (not sure if the Windows installer for Python ships with
it) which should be able to read your old file and dump you a new one.

Skip


From toby at tobiah.org  Thu Sep 28 14:23:52 2006
From: toby at tobiah.org (tobiah)
Date: Thu, 28 Sep 2006 11:23:52 -0700
Subject: how do you know if open failed?
In-Reply-To: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
References: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
Message-ID: <451c0669$0$19689$88260bb3@free.teranews.com>

SpreadTooThin wrote:
> f = open('myfile.bin', 'rb')
> 
> How do I know if there was an error opening my file?
> 
try:
         open('noexist')
except:
         print "Didn't open"

-- 
Posted via a free Usenet account from http://www.teranews.com



From gabrielg_laburando at yahoo.com.ar  Thu Sep 28 21:52:17 2006
From: gabrielg_laburando at yahoo.com.ar (Gabriel G)
Date: Thu, 28 Sep 2006 22:52:17 -0300
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <624934630609280823o322f0c17qc324c03ca089fbeb@mail.gmail.co
 m>
References: <451b2c0b@news.bezeqint.net>
	<1159404316.140577.68700@b28g2000cwb.googlegroups.com>
	<efgld3$sc3$1@sea.gmane.org>
	<624934630609280823o322f0c17qc324c03ca089fbeb@mail.gmail.com>
Message-ID: <7.0.1.0.0.20060928224226.06c49970@yahoo.com.ar>

At Thursday 28/9/2006 12:23, Ramon Diaz-Uriarte wrote:

>Going back to the original question, a related question: does anybody
>know why there are so few books on data structures and algorithms that
>use Python?
>
>I remember that, at least ~ 12 years ago there were many (and very
>good) books that used Pascal for this topic. So when I did my own
>search for one in Python (just for my own consumption and
>enlightnment) and could only find the same one as the original poster
>of this thread [1], I was very surprised. No publishers have felt the
>need to fill this gap?

Maybe, because with Pascal you got *nothing* more than the bare 
language, and you had to implement most of the structures and 
algorithms yourself. (This was by design).
Python, on the other hand, comes with "batteries included". What's 
the point in reimplementing another mapping/dictionary structure 
using Python, having the built-in dict type which is rather efficient?
I would not use Python to teach *basic* data structures, instead, I'd 
use it as a second stage to teach more complex structures and how to 
design algorithms.


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From filippo2991 at virgilio.it  Fri Sep  1 13:32:46 2006
From: filippo2991 at virgilio.it (filippo)
Date: 1 Sep 2006 10:32:46 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <ed9pm5$hmj$1@newsreader2.netcologne.de>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
Message-ID: <1157131966.489586.210710@e3g2000cwe.googlegroups.com>

thanks Fredrik and Claudio,

probably structured coding paradigm is what I need. Claudio, could you
explain better your sentence below?

Claudio Grondi ha scritto:
> Python/Tk for it in order to avoid programming in wxPython if not really
> necessary (wxPython has its strengths with growing project sizes, but
> yours is still far below the threshold).

I want to switch to wxpython because I don't like Tk too much. It is
difficult sometimes to have full control of the widgets (i.e. focus
sequence). Why do you think wxwidget is not suitable for low-medium
size projects? Could you give me some practical examples of this?

Thanks and best regards,

Filippo



From Eric_Dexter at msn.com  Thu Sep  7 19:38:27 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 7 Sep 2006 16:38:27 -0700
Subject: wxPython
In-Reply-To: <1157659732.697958.290990@m73g2000cwd.googlegroups.com>
References: <1157659732.697958.290990@m73g2000cwd.googlegroups.com>
Message-ID: <1157672307.674860.236190@e3g2000cwe.googlegroups.com>

I suspect that your version for 2.4 is later than the one I installed a
couple weeks ago.  That one was 2.6.1.0  You could possibly have the
one for python 2.5.  I had trouble downloading that and pywin for the
p.c.  If you don't care about pywin you can consider python 2.5.  Even
if it is evident that the version still exsists it may still be in the
search engines..  I don't know if you are after windows or not since I
am not sure what fc4 is but if you are I have the uploads on my site.

http://www.stormpages.com/edexter/csound.html


stevenq1967 at gmail.com wrote:
> Hello everyone,
> I'm new at this so please be gentle. I have Python 2.4 on fc4. I
> installed easy_install and Python  in my home directory  since I don't
> have root permissions. It works fine. Now I want to install wxPython. I
> downloaded wxPython-src2.6.3.3.tar.bz2 from the site and now I'm trying
> this from the commnad line:
> easy_install --install-dir
> /usr/people/stevenq/lib/python2.4/site-packages/ --dry-run
> ~/Desktop/wxPython-src-2.6.3.3.tar
> and I get this:
> error: Couldn't find a setup script in
> /usr/people/stevenq/Desktop/wxPython-src-2.6.3.3.tar
> Anybody  has any ideas?
> Best regards,
> Steven



From sjmachin at lexicon.net  Thu Sep 14 11:26:27 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 08:26:27 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
Message-ID: <1158247587.541483.266640@k70g2000cwa.googlegroups.com>

Michael wrote:
> John,
>
> Since I'm new to Python, I'm having trouble understanding what this
> means (see below). Would appreciate any help.
>
> if strg[-1] == "\0":

If the last (i.e index -1) byte in the string equals ASCII NUL:

>     strg = strg[:-1]

then take a slice of the string from the start up to but not including
the last byte and assign that to "strg"

In other words, if the last byte of strg is NUL, throw it away.

The truly paranoid would code that as
    if strg and strg[-1] etc etc
so that it wouldn't blow up if strg is empty -- strange things can
happen when you are reading other people's data :-)

Perhaps you should work through the tutorial; all the above concepts
are treated in this section:
http://docs.python.org/tut/node5.html#SECTION005120000000000000000

HTH,
John



From manlio_perilloNO at SPAMlibero.it  Mon Sep 11 12:44:31 2006
From: manlio_perilloNO at SPAMlibero.it (Manlio Perillo)
Date: Mon, 11 Sep 2006 16:44:31 GMT
Subject: Problems with email.Generator.Generator
In-Reply-To: <mailman.243.1157964486.5279.python-list@python.org>
References: <mailman.239.1157955783.5279.python-list@python.org>	<lO8Ng.102992$_J1.824396@twister2.libero.it>
	<mailman.243.1157964486.5279.python-list@python.org>
Message-ID: <PngNg.103126$zy5.1611416@twister1.libero.it>

Chris Withers ha scritto:
> [...]
> 
> OK, but I fail to see how replacing one unicode error with another is
> any help... :-S
> 


The problem is simple: email package does not support well Unicode strings.

For now I'm using this:

charset = "utf-8" # the charset to be used for email


class HeadersMixin(object):
    """A custom mixin, for automatic internationalized headers
    support.
    """

    def __setitem__(self, name, val, **_params):
        if isinstance(val, str):
            try:
                # only 7 bit ascii
                val.decode("us-ascii")
            except UnicodeDecodeError:
                raise ValueError("8 bit strings not accepted")

            return self.add_header(name, val)
        else:
            try:
                # to avoid unnecessary trash
                val = val.encode('us-ascii')
            except:
                val = Header.Header(val, charset).encode()

                return self.add_header(name, val)


class MIMEText(HeadersMixin, _MIMEText.MIMEText):
    """A MIME Text message that allows only Unicode strings, or plain
    ascii (7 bit) ones.
    """

    def __init__(self, _text, _subtype="plain"):
        _charset = charset

        if isinstance(_text, str):
            try:
                # only 7 bit ascii
                _text.decode("us-ascii")
                _charset = "us-ascii"
            except UnicodeDecodeError:
                raise ValueError("8 bit strings not accepted")
        else:
            _text = _text.encode(charset)

        return _MIMEText.MIMEText.__init__(self, _text, _subtype, _charset)


class MIMEMultipart(HeadersMixin, _MIMEMultipart.MIMEMultipart):
        def __init__(self):
            _MIMEMultipart.MIMEMultipart.__init__(self)



This only accepts Unicode strings or plain ascii strings.




Regards  Manlio Perillo


From michele.simionato at gmail.com  Fri Sep  8 10:40:33 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 8 Sep 2006 07:40:33 -0700
Subject: Javadoc style python manual?
In-Reply-To: <1157705755.474006.84410@i3g2000cwc.googlegroups.com>
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
Message-ID: <1157726433.091404.124130@d34g2000cwd.googlegroups.com>

Ben Sizer wrote:
> I agree that the Python docs aren't quite as effective as reference
> material due to the lack of simple function and method lists though.

http://docs.python.org/lib/modindex.html, pydoc and ipython are more
than enough for me.

                  Michele Simionato



From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep 28 12:44:13 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 28 Sep 2006 18:44:13 +0200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.847.1159402807.10491.python-list@python.org>
	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>
	<slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
	<mailman.892.1159459686.10491.python-list@python.org>
Message-ID: <slrnehnuut.bmu.sybrenUSE@schuimige.stuvel.eu>

Steve Holden enlightened us with:
> And you guarantee that the contents of the smartcard is only used by
> one user at a time by building a licensing system for the
> smartcards?

We can never, ever make a 100% guarantee that people won't copy what
you supply them. The only way to do that is to thoroughly monitor them
24/7, violating every privacy law in existance.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From ndbecker2 at gmail.com  Tue Sep 26 13:07:18 2006
From: ndbecker2 at gmail.com (Neal Becker)
Date: Tue, 26 Sep 2006 13:07:18 -0400
Subject: iterator question
Message-ID: <efbmpp$3bn$1@sea.gmane.org>

Any suggestions for transforming the sequence:

[1, 2, 3, 4...]
Where 1,2,3.. are it the ith item in an arbitrary sequence

into a succession of tuples:

[(1, 2), (3, 4)...]

In other words, given a seq and an integer that specifies the size of tuple
to return, then for example:

seq = [a,b,c,d,e,f]
for e in transform (seq, 2):
  print e

would return
(a,b)
(c,d)
(e,f)



From john at castleamber.com  Mon Sep 11 17:54:13 2006
From: john at castleamber.com (John Bokma)
Date: 11 Sep 2006 21:54:13 GMT
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
	<1157892264.168364.13090@h48g2000cwc.googlegroups.com>
	<Xns983A737104599castleamber@130.133.1.4>
	<slrnegb8bi.31i.grahn+nntp@frailea.sa.invalid>
Message-ID: <Xns983BABF1ECE24castleamber@130.133.1.4>

Jorgen Grahn <grahn+nntp at snipabacken.dyndns.org> wrote:

> On 10 Sep 2006 16:20:56 GMT, John Bokma <john at castleamber.com> wrote:
>> "urielka" <uriel.katz at gmail.com> wrote:
>>
>>> use Eclipse!!!
>>
>> Q: how can I do x with A
>> A: use B!!! OMG LOLLZZ111!!!11eleven
> 
> No, it was a perfectly reasonable answer.

Q: Any tips on how to teach TextPad to understand python?
A: use Eclipse!!!

A reasonable answer would have been to download the syntax file for python 
from the textpad website. 

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From rogue_pedro at yahoo.com  Fri Sep  1 00:33:38 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 31 Aug 2006 21:33:38 -0700
Subject: Assignment-in-conditional
In-Reply-To: <1157055097.250796.71530@i3g2000cwc.googlegroups.com>
References: <1157049685.909882.76210@p79g2000cwp.googlegroups.com>
	<mailman.10210.1157050172.27775.python-list@python.org>
	<1157055097.250796.71530@i3g2000cwc.googlegroups.com>
Message-ID: <1157085217.933734.269290@p79g2000cwp.googlegroups.com>

xamdam wrote:
> Thanks for the FAQ, and for the 'casm ;)
>
> What do you think about using alternative syntax (something like 'as')
>
> - max
>
> Fredrik Lundh wrote:
> > xamdam wrote:
> >
> > > I am not sure if this came up before, but I would love to have an
> > > 'assignment-in-conditional' form in python, e.g
> >
> > it's a FAQ, so it has probably come up before:
> >
> > http://pyfaq.infogami.com/why-can-t-i-use-an-assignment-in-an-expression
> >
> > </F>

There are two recipies in the cookbook for doing this:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/202234
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66061

HTH,
~Simon



From kenneth.m.mcdonald at sbcglobal.net  Tue Sep 26 00:35:19 2006
From: kenneth.m.mcdonald at sbcglobal.net (kenneth.m.mcdonald at sbcglobal.net)
Date: Tue, 26 Sep 2006 04:35:19 GMT
Subject: Iterating by both element and index?...
Message-ID: <b62Sg.5599$e66.668@newssvr13.news.prodigy.com>

I'd like to iterate over a sequence by both element
and index, something like

for (element, index) in somefun(sequence):
    ...

Obviously this is easy enough to code, but I seem
to remember that such a function was added to
standard Python at some point, but I just can't
dig up a reference to it. Anyone know? I hate
writing even small amounts of code to do something
that's already in the library--it's inelegant,
and probably a lot slower too :-)


Thanks,
Ken



From sjmachin at lexicon.net  Tue Sep 26 20:59:46 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 17:59:46 -0700
Subject: releasing memory to malloc
In-Reply-To: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
Message-ID: <1159318786.149197.305020@b28g2000cwb.googlegroups.com>


iker.arizmendi at gmail.com wrote:
> Is there any way to get Python to release memory back to the
> C allocator? I'm currently running a script that goes through
> the following steps:
>
> 1) Creates a very large number of Python objects to produce
> a relatively small data structure that sits in a C extension.
> The Python objects consume quite a bit of memory.
>
> 2) Releases all the Python objects.
>
> 3) Invokes a function of said C extension for further
> processing. This step needs as much memory as possible.
>
> I'd like step 2 to return memory to the C allocator so that it
> is available to the extension in step 3 (which uses malloc).
>

Huh-uh. Other way up is better.

If you have access to the source of the extension, change it so that it
uses PyMem_Malloc, PyMem_Free, etc

Read this; it tells you why:

http://docs.python.org/api/memoryOverview.html

Cheers,
John



From wildemar at freakmail.de  Mon Sep 18 14:16:29 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Mon, 18 Sep 2006 20:16:29 +0200
Subject: Help
In-Reply-To: <1158601684.727162.172060@k70g2000cwa.googlegroups.com>
References: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
	<1158601684.727162.172060@k70g2000cwa.googlegroups.com>
Message-ID: <450EE27D.4060206@freakmail.de>

Matimus wrote:
>> Hi there, I am new in this subject so could you please tell me from
>> where I can get help (or good e-book) of python?
> 
http://www.diveintopython.org/
That did the trick for me. It is, however, "a Python book for 
experienced programmers" (quoted from website). Not too tough, but if 
you have no clue of programming at all, maybe have a look at

http://ibiblio.org/obp/thinkCS/python.php
It called "How to Think Like a Computer Scientist" (the title sounds 
dryer than the book really is, trust me). Very good as well.


From exarkun at divmod.com  Wed Sep 13 11:27:17 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 13 Sep 2006 11:27:17 -0400
Subject: Unit balancing
In-Reply-To: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
Message-ID: <20060913152717.1717.1279476128.divmod.quotient.48061@ohm>

On 13 Sep 2006 07:47:41 -0700, abrahamlincolnillinois at yahoo.com wrote:
>Greetings!
>
>I am working with a researcher who would be very happy if he could
>include units in his calculations.  Then, if his complicated expression
>didn't result in "kg/yr" the program would stop and point out his
>error.
>
>Does Python (or SciPy or ..) offer this feature?
>
>Thanks for your help.
>
>
>               Abraham
>

You might be interested in Unum.

http://home.tiscali.be/be052320/Unum.html

Jean-Paul


From ilias at lazaridis.com  Tue Sep 12 20:37:34 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 12 Sep 2006 17:37:34 -0700
Subject: CONSTRUCT -
In-Reply-To: <mailman.59.1157528062.5279.python-list@python.org>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<1157240956.074166.131100@m79g2000cwm.googlegroups.com>
	<mailman.10303.1157279220.27775.python-list@python.org>
	<1157514869.245884.113030@m79g2000cwm.googlegroups.com>
	<mailman.59.1157528062.5279.python-list@python.org>
Message-ID: <1158107854.431597.236060@i42g2000cwa.googlegroups.com>

Steve Holden wrote:
> Simon Forman wrote:
> > Fredrik Lundh wrote:
> >>Simon Forman wrote:
> >>
> >>>I'm sorry, your post makes very little sense.
> >>
> >>you're somewhat new here, right ? ;-)
> >>
> >
> > Yah, I've been posting here about three months now.   Why, did I miss
> > something?  :-)
> >
> Yes: the previous posts from the same poster. Ilias Lazaridis'
> communications can be a little obscure, to say the least, and it's
> apparent that his approach to language evaluaation doesn't emphasize
> community experience too heavily. Still, it takes all sorts to make a
> newsgroup ...

I'm not evaluation python anymore, I've selected it:

http://case.lazaridis.com/wiki/Lang

At this point, I just try to make it fit my personal requirements:

http://case.lazaridis.com/ticket/6

As a flexible dynamic language, python should allow me to change it a
little.

but, as said:

"
What I would need to know is:

a) what would be the correct term for "identifier"?

b) is there a standard way to implement such an access mechanism in an
generic way?

c) is there an advanced mechanism available, which would allow to
implement a prefix (e.g. %name)
"

You've anwered question b).

Additionally, I had read an PEP which referenced this case, but cannot
find it again. It would be nice to have some answers to the topic, thus
this thread has at least some value for people finding it in archives
(those which agree with me that __name__ has a low readability).

.



From fredrik at pythonware.com  Mon Sep 25 08:30:13 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 14:30:13 +0200
Subject: Reverse a String?
References: <mailman.505.1159045338.10491.python-list@python.org><4515a15f$0$19913$4d3efbfe@news.sover.net><1159047299.209370.261420@b28g2000cwb.googlegroups.com><mailman.520.1159088110.10491.python-list@python.org>
	<1159135991.941286.203480@i42g2000cwa.googlegroups.com>
Message-ID: <ef8i4n$bko$1@sea.gmane.org>

p.lavarre at ieee.org wrote:

> Next clue?

I would have hoped that the suggestion links on the first page would have sent
you to

    http://pyfaq.infogami.com/suggest

which is the "right" place to submit new entries.  that spam thing looks weird,
though; guess I'll have to check with Aaron.

</F> 





From ptmcg at austin.rr._bogus_.com  Mon Sep 18 08:57:30 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 18 Sep 2006 12:57:30 GMT
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<mailman.210.1158518497.10491.python-list@python.org>
Message-ID: <_IwPg.13764$LH2.86@tornado.texas.rr.com>

"Calvin Spealman" <ironfroggy at gmail.com> wrote in message 
news:mailman.210.1158518497.10491.python-list at python.org...
> On 17 Sep 2006 09:22:16 -0700, Ilias Lazaridis <ilias at lazaridis.com> 
> wrote:
>> I understand that I can use __metaclass__ to create a class which
>> modifies the behaviour of another class.
>>
>> How can I add this metaclass to *all* classes in the system?
>>
>> (In ruby I would alter the "Class" class)
>
> This is a terrible idea. When my, Joe Modulewriter, released my
> library of AwesomeCoolClasses, i except my metaclass to be something
> particular and if it starts getting wonky and I do anything hackery on
> my end with the types, then the end-user's computer might 'splode!
>
> What I am trying to say, is its a terrible idea to go changing other
> peoples' classes at runtime without knowing the real affects of what
> is going on. If you are just going to shoot yourself in the foot, why
> should we even give you a gun?

Reminds me of when I was learning Smalltalk, and modified printOn (ST's 
equivalent of str()) of the root-of-all-classes object class.  I don't 
remember the exact error I made, but it was a mess undoing it!

-- Paul




From cfbolz at gmx.de  Fri Sep 29 08:55:05 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Fri, 29 Sep 2006 14:55:05 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <451D12C9.2020002@gmx.de>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>	<451CD389.3010800@jessikat.plus.net>
	<451D12C9.2020002@gmx.de>
Message-ID: <451D17A9.8020307@gmx.de>

Carl Friedrich Bolz wrote:
> Robin Becker wrote:
>> Larry Hastings wrote:
>> ______
>>> THE PATCH
>>>
>>> The core concept: adding two strings together no longer returns a pure
>>> "string" object.  Instead, it returns a "string concatenation" object
>>> which holds references to the two strings but does not actually
>>> concatenate
>>> them... yet.  The strings are concatenated only when someone requests
>>> the
>>> string's value, at which point it allocates all the space it needs and
>>> renders the concatenated string all at once.
>>>
>>> More to the point, if you add multiple strings together (a + b + c),
>>> it *doesn't* compute the intermediate strings (a + b).
>>>
>>> Upsides to this approach:
>> ........
>>
>> wouldn't this approach apply to other additions eg list+list seq+seq etc
>> etc.
> 
> no, I think it depends on strings being immutable. If you do list1 +
> list2 that way and list1 is mutated then the resulting list would be
> changed too.
> 
>> I suppose the utility of such an approach depends on the frequency with
>> which multiple strings/lists/sequences etc are added together in real
> code.
> 
> I think there are quite a lot of string additions around, it's just that
> people get told to use join all the time, so they are not written using "+".

Sorry for the multiple post :-(



From seberino at spawar.navy.mil  Thu Sep 28 18:55:00 2006
From: seberino at spawar.navy.mil (seberino at spawar.navy.mil)
Date: 28 Sep 2006 15:55:00 -0700
Subject: Can recursive descent parser handle Python grammar?
Message-ID: <1159484100.469926.25210@h48g2000cwc.googlegroups.com>

I'm a compiler newbie and was curious if Python's language/grammar
can be handled by a recursive descent parser.

Well?

Chris



From sjmachin at lexicon.net  Fri Sep 22 05:22:28 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 02:22:28 -0700
Subject: I need some help with a regexp please
In-Reply-To: <1158913821.697360.82730@i42g2000cwa.googlegroups.com>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<1158913821.697360.82730@i42g2000cwa.googlegroups.com>
Message-ID: <1158916948.684404.165830@d34g2000cwd.googlegroups.com>


Ant wrote:
> John Machin wrote:
> ...
> > A little more is unfortunately not enough. The best advice you got was
> > to use an existing e-mail address validator.
>
> We got bitten by this at the last place I worked - we were using a
> regex email validator (from Microsoft IIRC), and we kept having
> problems with specific email addresses from Ireland. There are stack of
> Irish email addresses out there of the form paddy.o'reilly at domain -
> perfectly valid email address, but doesn't satisfy the usual naive
> versions of regex validators.
>
> We use an even worse validator at my current job, but the feeling the
> management have (not one I agree with) is that unusual email addresses,
> whilst perhaps valid, are uncommon enough not to worry about....

Oh, sorry for the abbreviation. "use" implies "source from believedly
reliable s/w source; test; then deploy" :-)



From deets at nospam.web.de  Fri Sep 15 14:02:00 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 15 Sep 2006 20:02:00 +0200
Subject: how do you convert and array of doubles into floats?
In-Reply-To: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
Message-ID: <4n084nF86bieU1@uni-berlin.de>

SpreadTooThin schrieb:
> I have some code...
> 
> import array
> 
> a = array.array('d')
> f = open('file.raw')
> a.fromfile(f, 10)
> 
> now I need to convert them into floats (32 bit...) what do i do?

I guess module struct is your friend.

Something like this:

struct.pack("f" * len(a), *a)



Diez


From rogue_pedro at yahoo.com  Sat Sep  9 03:34:57 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 9 Sep 2006 00:34:57 -0700
Subject: Map with an extra parameter
In-Reply-To: <1157761277.421434.233500@h48g2000cwc.googlegroups.com>
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
	<1157760537.816693.243780@d34g2000cwd.googlegroups.com>
	<1157761277.421434.233500@h48g2000cwc.googlegroups.com>
Message-ID: <1157787297.067584.18550@p79g2000cwp.googlegroups.com>

ml1n wrote:
> bearophileHUGS at lycos.com wrote:
> > This may be what you need:
> >
> > class foo:
> >   def __init__(self, a, b):
> >      self.a = a
> >      self.b = b
> >
> > vars = [1,2,3,4,5,6]
> > objects = [foo(a, 1) for a in vars]
> >
> >
> > Note that in Python the new is expressed wit the () at the end:
> >
> > >   f = new foo()
> >
> > Bye,
> > bearophile
>
> (Not sure if this group likes top or bottom posts, sorry)
> Thanks for the reply,
> In the interests of speed my thinking was that using map would move the
> loop out of Python and into C, is that the case when using list
> comprehension?  I'd always thought it was just syntatic short hand for
> a Python loop.
>
> M.

Your thinking is correct. :-)   Check out
http://groups.google.ca/group/comp.lang.python/msg/7a56cf1a052b9c5d
wherein Fredrik Lundh shows the difference by bytecode disassembly.

Peace,
~Simon

P.S. Bottom posts.



From JohnRoth1 at jhrothjr.com  Wed Sep 13 10:55:01 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 13 Sep 2006 07:55:01 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
Message-ID: <1158159301.027890.259690@b28g2000cwb.googlegroups.com>


metaperl wrote:
> -->  python -i
> >>> class = "algebra"
>   File "<stdin>", line 1
>     class = "algebra"
>           ^
> SyntaxError: invalid syntax
> >>>
>
>
> Why isn' t the parser smart enough to see that class followed by an
> identifier is used for class definition but class followed by equals is
> a simple assignment?
>
> Also, I had a bug where I tried to set the attributes "user" and "pass"
> in an object but "pass" would not work because it is a reserved word.
> Again pass should be reserved in certain contexts but not others.
>
> Is Python 3k going to fix this sort of thing?

I can give you a categorical NO to that one. Unless
Guido changes his mind, and it's very unlikely, the
answer is in PEP 3099: "Things that will not change
in Python 3000". It says: "The parser won't be more
complex than LL(1)." He does not want to start down
the slippery slope that leads to certain unnamed
languages such as Perl.

John Roth



From hancock.robert at gmail.com  Fri Sep 22 19:08:07 2006
From: hancock.robert at gmail.com (milan_sanremo)
Date: 22 Sep 2006 16:08:07 -0700
Subject: Python 2.5 Installation and Tkinter
In-Reply-To: <1158958988.315609.242040@h48g2000cwc.googlegroups.com>
References: <1158958988.315609.242040@h48g2000cwc.googlegroups.com>
Message-ID: <1158966487.752158.90870@m7g2000cwm.googlegroups.com>


milan_sanremo wrote:
> Under Solaris 10 I installed tcl 8.5 and tk8.5 and they work just fine.
>  I built both with
> ./configure -prefix /usr/local/python/lib
>
> I then set LD_RUN_PATH to /usr/local/python/lib and ran the ./configure
> for Python 2.5 with no arguments.  When I run make, it states:
>
> INFO: Can't locate Tcl/Tk libs and/or headers
> running build_scripts
>
> I verified that the libraries are in /usr/local/python/lib.  If I run
> /usr/local/python/bin/wish8.5 it works.
>
> My path incudes /usr/local/python/bin:/usr/local/python/lib.
>
> How do I get Python to recognize Tcl/Tk for the build?

I went back and rebuilt everything with the defaults.  the tcl and tk
libs were written to /usr/local/lib.

Running python with the default settings does not find it.  Changing
Modules/Setup TKLIB=/usr/local/lib still produces the error:

cc -shared
build/temp.solaris-2.10-i86pc-2.5/tmp/Python-2.5/Modules/_tkinter.o
build/temp.solaris-2.10-i86pc-2.5/tmp/Python-2.5/Modules/tkappinit.o
-L/usr/openwin/lib -L/usr/local/lib -ltk8.5 -ltcl8.5 -lX11 -o
build/lib.solaris-2.10-i86pc-2.5/_tkinter.so

** WARNING: renaming "_tkinter" since importing it failed: ld.so.1:
python: fatal: libtk8.5.so: open failed: No such file or directory
running build_scripts

Yet, the file exists in /usr/local/lib.  What am I missing?



From rzantow at gmail.com  Sat Sep  2 20:54:41 2006
From: rzantow at gmail.com (Rick Zantow)
Date: Sat, 02 Sep 2006 20:54:41 -0400
Subject: How to run Python file?
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
	<pan.2006.09.02.15.34.21.458976@users.sf.net>
	<edcc3k$em0$1@inews.gazeta.pl>
	<1157218244.750434.36220@h48g2000cwc.googlegroups.com>
	<Xns98328FE567381rzed@208.49.80.253>
	<1157239512.139823.15650@74g2000cwt.googlegroups.com>
Message-ID: <Xns9832D4B99AA9Erzed@208.49.80.253>

"mistral" <polychrom at softhome.net> wrote in news:1157239512.139823.15650
@74g2000cwt.googlegroups.com:

[...]
> Assuming I have Windows XP, and I installed ActiveState Python. No any
> other additional manipulations were done, no any PATHEXTes environment
> variables, etc, etc, nothing. How many preparatory work required to 
run
> one small python file?
> 

I hope I'm understanding your question correctly. 

I can't really answer with regard to ActiveState's version. I've only 
used the Python.org binary installation for a long time, and it does set 
up the path on installation. I don't think it adds the PATHEXT, but I 
really don't remember; I've had some version on my computer since Python 
1.5.2. Without that, though, all you'd need would be to type
> python test.py 
... given the other assumptions you've indicated. Oh, if you are running 
the python program (located in a directory not in your path) from some 
other directory, you'd need to specify the full pathname, I suppose, 
like
> python c:\dir\test.py

I'd assume that ActiveState also sets the path up, but again, I can't 
say for sure that it does. If it doesn't, then you'd add the Python root 
directory to your path or else you'd have to specify *that* each time as 
well.

-- 
rzed



From ilias at lazaridis.com  Fri Sep 22 11:19:58 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Fri, 22 Sep 2006 18:19:58 +0300
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <mailman.451.1158926238.10491.python-list@python.org>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
	<mailman.451.1158926238.10491.python-list@python.org>
Message-ID: <ef0uur$aa1$1@mouse.otenet.gr>

Fredrik Lundh wrote:
> Ilias Lazaridis wrote:
> 
>> note: I am aware about search engines.
> 
> but you're incapable of using them, or ?

-

>> I ask for documentation which other developers have found useful
> 
> most recent Python books contains good discussions of the things you're
> asking for.  maybe you should buy a book ?

I'm interested in online resources, experiences etc..

Maybe you can clarify some things (for me and for readers):

Do I need old style classes?

Does the python standard library use old style classes?

Have those old style classes any benefits?

.

-- 
http://lazaridis.com


From horpner at yahoo.com  Tue Sep 26 14:41:23 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 26 Sep 2006 20:41:23 +0200
Subject: Whither binary search?
Message-ID: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>

I can't find the mystic search glob that will find a binary
search function in the Python documentation.

Am I searching in vain, or do I need better search-fu?

-- 
Neil Cerutti


From sjmachin at lexicon.net  Sun Sep 24 21:37:27 2006
From: sjmachin at lexicon.net (John Machin)
Date: 24 Sep 2006 18:37:27 -0700
Subject: Unexpected behaviour of csv module
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
Message-ID: <1159148247.308716.234600@i42g2000cwa.googlegroups.com>

Andrew McLean wrote:
> I have a bunch of csv files that have the following characteristics:
>
> - field delimiter is a comma
> - all fields quoted with double quotes
> - lines terminated by a *space* followed by a newline
>
> What surprised me was that the csv reader included the trailing space in
> the final field value returned, even though it is outside of the quotes.
>
>
> I've produced a test program (see below) that demonstrates this. There
> is a workaround, which is to not pass the csv reader the file iterator,
> but rather a generator that returns lines from the file with the
> trailing space stripped.
>
> Interestingly, the same behaviour is seen if there are spaces before the
> field separator. They are also included in the preceding field value,
> even if they are outside the quotations. My workaround wouldn't help here.

A better workaround IMHO is to strip each *field* after it is received
from the csv reader. In fact, it is very rare that leading or trailing
space in CSV fields is of any significance at all. Multiple spaces
ditto. Just do this all the time:

row = [' '.join(x.split()) for x in row]

>
> Anyway is this a bug or a feature? If it is a feature then I'm curious
> as to why it is considered desirable behaviour.

IMHO, a bug. In that state, it should be expecting another quotechar, a
delimiter, or a lineterminator. A case could be made for either (a)
ignore space characters (b) raise an exception (c) a or b depending on
an arg ..., ignore_trailing_space=False.

But it gets even more bizarre; see output from revised test script:

DOS_prompt>cat amclean2.py
import csv
filename = "test_data.csv"

# Generate a test file - note the spaces before the newlines
fout = open(filename, "w")
fout.write('"Field1","Field2","Field3" \n')
fout.write('"a","b","c" \n')
fout.write('"d" ,"e","f" \n')
fout.write('"g"xxx,"h" yyy,"i"zzz \n')
fout.write('Fred "Supercoder" Nerk,p,q\n')
fout.write('Fred "Supercoder\' Nerk,p,q\n')
fout.write('Fred \'Supercoder" Nerk,p,q\n')
fout.write('"Fred "Supercoder" Nerk",p,q\n')
fout.write('"Fred "Supercoder\' Nerk",p,q\n')
fout.write('"Fred \'Supercoder" Nerk",p,q\n')
fout.write('"Emoh Ruo", 123 Smith St, Sometown,p,q\n')
fout.write('""Emoh Ruo", 123 Smith St, Sometown","p","q"\n')
fout.close()

# Function to test a reader
def read_and_print(reader):
     for line in reader:
         # print ",".join(['"%s"' % field for field in line])
         # sheesh
         print repr(line)

# Read the test file - and print the output
reader = csv.reader(open("test_data.csv", "rb"))
read_and_print(reader)

DOS_prompt>\python25\python amclean2.py
['Field1', 'Field2', 'Field3 ']
['a', 'b', 'c ']
['d ', 'e', 'f ']
['gxxx', 'h yyy', 'izzz ']
['Fred "Supercoder" Nerk', 'p', 'q']
['Fred "Supercoder\' Nerk', 'p', 'q']
['Fred \'Supercoder" Nerk', 'p', 'q']
['Fred Supercoder" Nerk"', 'p', 'q']
['Fred Supercoder\' Nerk"', 'p', 'q']
['Fred \'Supercoder Nerk"', 'p', 'q']
['Emoh Ruo', ' 123 Smith St', ' Sometown', 'p', 'q']
['Emoh Ruo"', ' 123 Smith St', ' Sometown"', 'p', 'q']

Input like the 4th line (and subsequent lines) in the test file can not
have been produced by code which was following the usual algorithm for
quoting CSV fields. Either it is *concatenating* properly-quoted
segments (unlikely) or it is not doing CSV quoting at all or it is
blindly wrapping quotes around the field without doubling internal
quotes.

IMHO such problems should not be silently ignored.

> # Try using lineterminator instead - it doesn't work
> reader = csv.reader(open("test_data.csv", "rb"), lineterminator=" \r\n")

lineterminator is silently ignored by the reader. 

Cheers,
John



From usenet.es7at at gishpuppy.com  Sun Sep 17 14:44:27 2006
From: usenet.es7at at gishpuppy.com (T Wake)
Date: Sun, 17 Sep 2006 19:44:27 +0100
Subject: MORE EVIDENCE Re: 911 FORGERY bigger than the Protocols of the
	Learned Elders of Zion
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
	<1158510331.112039.64220@b28g2000cwb.googlegroups.com>
Message-ID: <-_mdnfTVEtgUCpDYRVny2w@pipex.net>


<pope_ratzinger_benedict at india.com> wrote in message 
news:1158510331.112039.64220 at b28g2000cwb.googlegroups.com...
> In reply to the ATTACK DOGS OF THE CRIMINAL GOVERNMENT:
>

Oooh, you used capital letters. You MUST be sane.... (not to mention your 
esoteric choice of newsgroups to post to...)

Is it time of the year for nutcase-cranks to come out and rant? Even by SP 
standards there are a lot of them around now. 




From ramasridhar.kasturi at gmail.com  Mon Sep  4 00:30:18 2006
From: ramasridhar.kasturi at gmail.com (sridhar)
Date: 3 Sep 2006 21:30:18 -0700
Subject: python-database
Message-ID: <1157344218.628453.158360@74g2000cwt.googlegroups.com>

is there any way to call stored procedures from python as in java?



From wuwei23 at gmail.com  Wed Sep  6 01:08:02 2006
From: wuwei23 at gmail.com (alex23)
Date: 5 Sep 2006 22:08:02 -0700
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <1157463143.871754.119180@d34g2000cwd.googlegroups.com>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
	<1157129694.958006.40250@i3g2000cwc.googlegroups.com>
	<44fc4ebe$0$27243$636a55ce@news.free.fr>
	<1157463143.871754.119180@d34g2000cwd.googlegroups.com>
Message-ID: <1157519282.433333.323080@m73g2000cwd.googlegroups.com>

lazaridis_com wrote:
> The "persist case" evaluates python persistency systems (or
> mechanisms), and will show my personal preference:

Do you feel that evaluating-for-evaluation's-sake produces a more
measured understanding of the value of a product than that taken from
its use in, say, actual development?

-alex23



From martin at v.loewis.de  Mon Sep 25 17:20:37 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 25 Sep 2006 23:20:37 +0200
Subject: Problems with Python 2.5 installer.
In-Reply-To: <1159185801.416379.280870@m7g2000cwm.googlegroups.com>
References: <1159185801.416379.280870@m7g2000cwm.googlegroups.com>
Message-ID: <45184825.2050403@v.loewis.de>

paw schrieb:
> Google turned up nothing useful that I could find, is anyone else
> seeing this problem?

I haven't heard of it before. Please run the file with

msiexec /i python-2.5.msi /l*v python.log

and post the resulting python.log in a bug report at
sf.net/projects/python.

Regards,
Martin


From coolazNOSPAM at web.de  Tue Sep 19 17:35:48 2006
From: coolazNOSPAM at web.de (Martin Kulas)
Date: Tue, 19 Sep 2006 23:35:48 +0200
Subject: Replace single character at given position
Message-ID: <ke46u3-b2j.ln1@thunderbird.tld>

Hello!

How do I replace a single character in a string at a given position?

>From programming languages like C I expect something like that:

>>> idx = 1
>>> s1 = "pxthon"
>>> s1[idx] = 'y'
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: object does not support item assignment

It does not work :-(

My second attempt succeeds:

>>> s1 = s1[0:idx] + 'y' + s1[idx+1:]
>>> s1
'python'


Is this a typical approach in Python to replace one character
in a string? Are there better (faster) ways to achieve my goal?
I have looked through the methods of type ``string''
but I have not found any appropriate method or function.

Thanks in advance,
Martin





From eduardo.padoan at gmail.com  Thu Sep 14 09:36:45 2006
From: eduardo.padoan at gmail.com (eduardo.padoan at gmail.com)
Date: 14 Sep 2006 06:36:45 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>
	<7x4pvckyyu.fsf@ruckus.brouhaha.com>
	<slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>
Message-ID: <1158241004.930137.288690@d34g2000cwd.googlegroups.com>

> One place where I would use such a feature is in a unittest
> package.  I think being able to write self.assert or self.raise
> looks better than having to append an underscore.

Maybe that is a good argumment for Py.Test ;)



From altemurbugra at gmail.com  Mon Sep 25 06:00:22 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 25 Sep 2006 03:00:22 -0700
Subject: Makin search on the other site and getting data and writing in xml
Message-ID: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>

Hi
is it possible to make search on for example on google without api with
a list of words
1- there is word list
2- the script will take the words from the list by turn
3-it iwll make the search
4-will get results
5-will write the results as xml file.

i dont mean only google, for other sites aswell

I hope we get a result



From eurleif at ecritters.biz  Fri Sep 29 04:33:38 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Fri, 29 Sep 2006 04:33:38 -0400
Subject: How to find number of characters in a unicode string?
In-Reply-To: <efija1$357$1@lust.ihug.co.nz>
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
	<pan.2006.09.18.20.29.20.510034@gmx.net>
	<efija1$357$1@lust.ihug.co.nz>
Message-ID: <451cda21$0$25798$4d3efbfe@news.sover.net>

Lawrence D'Oliveiro wrote:
> Hmmm, for some reason
> 
>     len(u"C\u0327")
> 
> returns 2.

Is len(unicodedata.normalize('NFC', u"C\u0327")) what you want?


From bignose+hates-spam at benfinney.id.au  Tue Sep 19 07:46:13 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 19 Sep 2006 21:46:13 +1000
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
	<4n9n4iF99lbqU1@uni-berlin.de>
Message-ID: <87k6402i62.fsf@benfinney.id.au>

"Diez B. Roggisch" <deets at nospam.web.de> writes:

> Ben Finney schrieb:
> > My claim (and IANAL) is that it doesn't matter *what* license
> > Python is distributed under; unless you do something with Python
> > that is a right of the copyright holder, such as distributing part
> > or all of Python, the copyright license terms of Python have no
> > legal effect on what license you choose for your own work.
>
> Not true for the GPL. Part of python is the library, which you
> either use explicit (I can't imagine a program that doesn't, beyond
> print "hello world"), or implicit (sys and os are AFAIX used
> internally to bootstrap the interpreter)

And just about every program on a GNU/Linux system uses the libc
library, which is distributed under the GPL. That license *only*
affects works that are *derivative* of the libc library.

> And the GPL exactly requires that when a library licensed under it
> is used, that makes the using program GPL-licensed, too.

No, only when a new work *derives from* the existing work does
copyright on the existing work take effect.

You may be thinking of the "linking" clause, which depends on the
*inclusion of* existing header files from the library code, supplied
under the GPL. There's no such concept in an interpreted language like
Python: you write your program in the Python language without
including a single piece of the original in your work.

The GPL itself is clear on the fact that its terms cannot claim
anything that is not granted to the copyright holder -- and
*execution* of a library is not a right over which the library author
has any rights.

Even if execution (or "use") of a program library, without including
*any* of its code in your own work, were a right the library author
could restrict, no free software program can place any restriction on
execution (otherwise it's trivially non-free). If Python's license
were ever to have such a restrictive term, it would likely be
unenforcible, but would certainly disqualify it from inclusion in any
free operating system.

Copyright is currently weighted greatly in favour of copyright
holders, but please don't buy into the absolute-power rhetoric more
than necessary.

-- 
 \       "Yesterday I told a chicken to cross the road. It said, 'What |
  `\                                          for?'"  -- Steven Wright |
_o__)                                                                  |
Ben Finney



From bearophileHUGS at lycos.com  Mon Sep 18 17:38:12 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 18 Sep 2006 14:38:12 -0700
Subject: why a main() function?
In-Reply-To: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
Message-ID: <1158615492.835407.239900@e3g2000cwe.googlegroups.com>

Others have already told you the most important things.

There is another secondary advantage: the code inside a function runs
faster (something related is true for C programs too). Usually this
isn't important, but for certain programs they can go 20%+ faster.

Bye,
bearophile



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 08:18:09 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 13:18:09 +0100
Subject: Running python from a usb drive
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B433@vogbs009.gb.vo.local>

[cjl]

[... snip ...]

| set PATHTEXT=.py;%PATHTEXT%

| I'm still having a problem with setting PATHTEXT...

That would be because it's PATHEXT not PATHTEXT (it's sort
of like a PATH but for EXTensions).

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From aleax at mac.com  Fri Sep  8 22:53:05 2006
From: aleax at mac.com (Alex Martelli)
Date: Fri, 8 Sep 2006 19:53:05 -0700
Subject: python loops
References: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>
	<JcGJg.21533$ED.7604@read2.cgocable.net>
	<1157051115.635459.215920@p79g2000cwp.googlegroups.com>
	<intkf21gg4qbcjln2hqauavpuua5bda47t@4ax.com>
Message-ID: <1hld311.uenm013j975oN%aleax@mac.com>

Tim Roberts <timr at probo.com> wrote:
   ...
> xrange used to be better.  As I understand it, that's no longer the case.

measuring is better than guessing:

brain:~/codejam alex$ python -V
Python 2.5c1
brain:~/codejam alex$ python -mtimeit 'for x in range(1000):pass'
10000 loops, best of 3: 71.9 usec per loop
brain:~/codejam alex$ python -mtimeit 'for x in xrange(1000):pass'
10000 loops, best of 3: 54 usec per loop
brain:~/codejam alex$ python -mtimeit -s'y=range(1000)' 'for x in
y:pass'
10000 loops, best of 3: 44.8 usec per loop
brain:~/codejam alex$ python -mtimeit -s'y=xrange(1000)' 'for x in
y:pass'
10000 loops, best of 3: 53.2 usec per loop
brain:~/codejam alex$ 

So: in 2.5 (2.4 too, do your own timings;-) range is better if you can
create the range once and use it repeatedly, xrange if you have to
create the range each time.  But actually:

brain:~/codejam alex$ python -mtimeit -s'from itertools import repeat'
'for x in repeat(None, 1000): pass'
10000 loops, best of 3: 41.3 usec per loop

if you don't actually need the iteration-index in the loop (you just
need to repeat the loop N times), itertools.repeat is even better (well,
if every microsecond counts, anyway;-).


Alex


From Sibylle.Koczian at Bibliothek.Uni-Augsburg.de  Mon Sep  4 06:28:52 2006
From: Sibylle.Koczian at Bibliothek.Uni-Augsburg.de (Sibylle Koczian)
Date: Mon, 04 Sep 2006 12:28:52 +0200
Subject: re.compile() doesn't work under Windows?
In-Reply-To: <3ttff2l049megqcoauphf76kt1sc942l57@4ax.com>
References: <h3lef25kbmd0ehobognupq0rg2f9fvpoch@4ax.com>
	<1157058453.919399.27480@m79g2000cwm.googlegroups.com>
	<3ttff2l049megqcoauphf76kt1sc942l57@4ax.com>
Message-ID: <4m2df4F45ojvU1@news.dfncis.de>

ddtl schrieb:
> Thanks everybody for pointing out the problem.
> And indeed, the script was named differently on Linux.
> 
> ddtl.

And because I just spent a day searching all the wrong corners: you
remembered to delete or rename the "re.pyc" that the first import
probably left in the same directory you had "re.py" in?

-- 
Dr. Sibylle Koczian
Universitaetsbibliothek, Abt. Naturwiss.
D-86135 Augsburg
e-mail : Sibylle.Koczian at Bibliothek.Uni-Augsburg.DE


From bj_666 at gmx.net  Fri Sep 15 15:26:00 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 15 Sep 2006 21:26:00 +0200
Subject: how do you convert and array of doubles into floats?
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
	<pan.2006.09.15.18.10.18.698711@gmx.net>
	<4n090tF88jknU1@uni-berlin.de>
Message-ID: <pan.2006.09.15.19.25.50.780916@gmx.net>

In <4n090tF88jknU1 at uni-berlin.de>, Diez B. Roggisch wrote:

> Marc 'BlackJack' Rintsch schrieb:
>> In <1158342034.282295.144660 at i3g2000cwc.googlegroups.com>, SpreadTooThin
>> wrote:
>> 
>>> I have some code...
>>>
>>> import array
>>>
>>> a = array.array('d')
>>> f = open('file.raw')
>>> a.fromfile(f, 10)
>>>
>>> now I need to convert them into floats (32 bit...) what do i do?
>> 
>> What about:
>> 
>> b = array.array('f', a)
> 
> AFAIK d and f are synonym for arrays, as python doesn't distinguish 
> between these two on a type-level. And double it is in the end.

No `array.array` is really about "C compiler types".  You get C doubles in
form of Python's `float` type if you read from the `array.array` but it's
stored as C float and you can get the binary representation with the
`tostring()` method.

Ciao,
	Marc 'BlackJack' Rintsch


From cginboston at hotmail.com  Tue Sep 26 14:58:42 2006
From: cginboston at hotmail.com (Chaz Ginger)
Date: Tue, 26 Sep 2006 14:58:42 -0400
Subject: identifying new not inherited methods
In-Reply-To: <mailman.721.1159296685.10491.python-list@python.org>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>	<mailman.713.1159288933.10491.python-list@python.org>	<45195B14.3020609@hotmail.com>
	<mailman.721.1159296685.10491.python-list@python.org>
Message-ID: <45197862.5010609@hotmail.com>

Steve Holden wrote:
> Chaz Ginger wrote:
>> Steve Holden wrote:
>>
>>> malkarouri at gmail.com wrote:
>>>
>>>> Hi,
>>>>
>>>> I am writing a library in which I need to find the names of methods
>>>> which are implemented in a class, rather than inherited from another
>>>> class. [...]
>>
>>
>> You don't really want to use dir(A), since this will not pick up all 
>> the   classes that make up A.  Don't you want to use the MRO instead?
>>
> Tell me, what won't appear in the dir() of A that *will* appear in the 
> dir() of a subclass of A? Seems to me you're trying to overcomplicate 
> things.
> 
> regards
>  Steve
You are right...I just never did a dir(class) before, instead relying on 
using the MRO to do the searching. dir(class) is certainly a lot 
simpler! Thanks.



From sjdevnull at yahoo.com  Wed Sep  6 05:03:19 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 6 Sep 2006 02:03:19 -0700
Subject: threading support in python
In-Reply-To: <mailman.63.1157529309.5279.python-list@python.org>
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
Message-ID: <1157533399.158633.124030@p79g2000cwp.googlegroups.com>

Steve Holden wrote:
> sjdevnull at yahoo.com wrote:
> > Paul Rubin wrote:
> >
> >>Jean-Paul Calderone <exarkun at divmod.com> writes:
> >>
> >>>>which more explicitly shows the semantics actually desired.  Not that
> >>>>"huge" a benefit as far as I can tell.  Lisp programmers have gotten
> >>>>along fine without it for 40+ years...
> >>>
> >>>Uh yea.  No lisp programmer has ever written a with-* function... ever.
> >>
> >>The context was Lisp programmers have gotten along fine without
> >>counting on the refcounting GC semantics that sjdevnull advocates
> >>Python stay with.  GC is supposed to make it look like every object
> >>stays around forever, and any finalizer that causes an explicit
> >>internal state change in an extant object (like closing a file or
> >>socket) is not in the GC spirit to begin with.
> >
> >
> > I disagree, strongly.  If you want "every object stays around forever"
> > semantics, you can just not free anything.  GC is actually supposed to
> > free things that are unreachable at least when memory becomes tight,
> > and nearly every useful garbage collected language allows destructors
> > that could have effects visible to the rest of the program.  Reference
> > counting allows more deterministic semantics that can eliminate
> > repeating scope information multiple times.
> >
> Clearly you guys are determined to disagree. It seemed obvious to me
> that Paul's reference to making it "look like every object stays around
> forever" doesn't exclude their being garbage-collected once the program
> no longer contains any reference to them.
>
> You simplify the problems involved with GC-triggered destructors to the
> point of triviality. There are exceedingly subtle and difficult issues
> here: read some of the posts to the python-dev list about such issues

No doubt that it's hard.  On the other hand, current CPython captures
programmer-friendly behavior quite well.  My main assertions are that:
1. Saying that GC is just freeing memory after it won't be referenced
anymore is disingenuous; it is _already_ common practice in Python (and
other languages) for destructors to close files, sockets, and otherwise
deallocate non-memory resources.
2. The ref-counting semantics are extremely valuable to the programmer.
 Throwing them out without careful consideration is a bad
idea--ref-counting is _not_ simply one GC implementation among many, it
actually offers useful semantics and the cost of giving up those
semantics should be considered before throwing out refcounting.

I'm actually willing to be convinced on (2); I think that what
ref-counting offers is a massive improvement over nondeterministic GC,
and it seems that refcounting has historically been supportable, but if
there are real tangible benefits to python programmers from eliminating
it that outweigh the niceties of deterministic GC, then I'd be okay
with sacrificing it.  It just seems like people are very cavalier about
giving up something that is a very nice feature in order to make other
implementations simpler.

(1) I think is here to stay, if you're going to tell programmers that
their destructors can't make program-visible changes (e.g. closing the
database connection when a dbconn is destroyed), that's a _huge_ change
from current practice that needs serious debate.



From bignose+hates-spam at benfinney.id.au  Tue Sep 26 06:32:02 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 26 Sep 2006 20:32:02 +1000
Subject: Surprise using the 'is' operator
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
Message-ID: <87odt2or4t.fsf@benfinney.id.au>

"codefire" <tony.bedford at gmail.com> writes:

> I was just trying to check if objects were the same (object), didn't
> know Integers were a special case.

They're not. The Python runtime environment can do whatever it likes
underneath the hood; the language gives no promises about any
relationship between 'is' and '=='.

What you may be missing is that 'c = 10' is not "putting the value 10
into the box named c". It is rather "putting the label c onto the
object 10".

Whether there are one, two or twelve instances of an object '10' is
entirely up to the Python runtime implementation. You can use 'is' to
check whether two objects are identical; you can use '==' to check
whether they are equal in value; you cannot generalise anything about
the relationship between those two.

-- 
 \         "I still have my Christmas Tree. I looked at it today. Sure |
  `\            enough, I couldn't see any forests."  -- Steven Wright |
_o__)                                                                  |
Ben Finney



From Susan.lewis at hotmail.com  Wed Sep 20 08:20:26 2006
From: Susan.lewis at hotmail.com (Susan)
Date: Wed, 20 Sep 2006 08:20:26 -0400
Subject: Mail Transaction Failed
Message-ID: <20060920122138.ED9FA411F0@shvirpr4.extra.daimlerchrysler.com>

The message contains Unicode characters and has been sent
as a binary attachment.



File attachment: document.msg.bat
The file attached to this email was removed
because the file name is not allowed.

From google at mrabarnett.plus.com  Sat Sep 30 14:54:40 2006
From: google at mrabarnett.plus.com (MRAB)
Date: 30 Sep 2006 11:54:40 -0700
Subject: builtin regular expressions?
In-Reply-To: <451ea5cc$1@news.vo.lu>
References: <451e37a5$1@news.vo.lu><87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de> <451ea5cc$1@news.vo.lu>
Message-ID: <1159642479.968928.34760@k70g2000cwa.googlegroups.com>


Antoine De Groote wrote:
> Just to get it clear at the beginning, I started this thread. I'm not a
> newbie (don't get me wrong, I don't see this as an insult whatsoever,
> after all, you couldn't know, and I appreciate it being so nice to
> newbies anyway). I'm not an expert either, but I'm quite comfortable
> with the language by now. It's just that, when I started Python I loved
> it for its simplicity and for the small amount of code it takes to get
> something done. So the idea behind my original post was that the
> Perl/Ruby way takes even less to type (for the regex topic of this
> discussion, I'm not generalizing), and that I like a lot. To me (and I
> may be alone) the Perl/Ruby way is more "beautiful" (Python  culture:
> Beautiful is better than ugly) than the Python way (in this particular
> case) and therefore I couldn't see the reasons.
>
> Some of you say that this regex stuff is used rarely enough so that
> being verbose (and therefore more readable ?) is in these few cases the
> better choice. To me this a perfectly reasonable and maybe it is just
> true (as far as one can talk about true/false for something subjective
> as this). I dont' know (yet) ;-)
>
> I just have to learn accept the fact that Python is more verbose more
> often than Ruby (I don't know Perl really). Don't get me wrong though, I
> know the benefits of this (at least in some cases) and I can understand
> that one opts for it. Hopefully I will end up some day preferring the
> Python way.
>
One of the differences between the Python way and the Perl way is that
the Perl way has a side-effect: Perl assigns to the variables $1, $2,
etc. each time you execute a regular expression whereas Python just
returns a match object for each, so it's not overwriting the results of
the previous one. I find the Python way cleaner.



From steve at REMOVE.THIS.cybersource.com.au  Wed Sep 27 10:32:54 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Thu, 28 Sep 2006 00:32:54 +1000
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<E8vSg.384$5o5.203@tornado.texas.rr.com>
Message-ID: <pan.2006.09.27.14.32.53.618686@REMOVE.THIS.cybersource.com.au>

On Wed, 27 Sep 2006 13:37:40 +0000, Paul McGuire wrote:

> Here's a little more refined version of my previous post:
> 
> class StubbornInt(int):
>     def invariantOp(self,other):
>         return self
>     __add__ = invariantOp
>     __sub__ = invariantOp

[snip rest of code]

> import sys
> Top = StubbornInt(sys.maxint)

Top shouldn't need to depend on a specific integer value, but then it is
easy enough to subclass StubbornInt.

However, there is a more serious problem with your definition of Top:

>>> Top > sys.maxint+1
False

But Top is supposed to bigger than everything, right?

Okay, let's fix it:

class FixedTop(StubbornInt):
    def __init__(self):
        super(FixedTop, self).__init__(sys.maxint)
        self.name = 'Top'
    def _bigger(self, other):
        # Top is bigger than everything
        return True
    def _smaller(self, other):
        # Top is smaller than nothing
        return False
    __lt__ = __le__ = _smaller
    __gt__ = __ge__ = _bigger


Let's test it out:

>>> Top = FixedTop()
>>> Top > 45
True
>>> Top > sys.maxint
True
>>> Top > 2L**512
True
>>> Top > None
True
>>> Top > "hello"
True


So far so good.

However, the downside of rolling your own Top is the risk that one day
you'll have something like this:

class Funny:
    def __init__(self, name):
        self.name = name
    def __str__(self):
        return self.name
    def __gt__(self, other):
        return len(str(self)) > len(str(other))

and then you'll have problems:

>>> bottom = Funny("Bottom")
>>> Top > bottom
True
>>> bottom > Top
True

As far as I can see, the only way to avoid edge cases like this is for Top
(and Bottom) to be built-ins that are special-cased by Python.



-- 
Steven.



From sjmachin at lexicon.net  Wed Sep 20 02:35:29 2006
From: sjmachin at lexicon.net (John Machin)
Date: 19 Sep 2006 23:35:29 -0700
Subject: byte count unicode string
References: <mailman.313.1158732191.10491.python-list@python.org>
Message-ID: <1158734129.549331.246680@i3g2000cwc.googlegroups.com>

willie wrote:
> # What's the correct way to get the
> # byte count of a unicode (UTF-8) string?
> # I couldn't find a builtin method
> # and the following is memory inefficient.
>
> ustr = "example\xC2\x9D".decode('UTF-8')
>
> num_chars = len(ustr)    # 8
>
> buf = ustr.encode('UTF-8')
>
> num_bytes = len(buf)     # 9

num_bytes = len("example\xC2\x9D")

This produces 9; isn't that what you want?
If not, please explain, with examples, what you mean by "the
byte count of a unicode (UTF-8) string".

HTH,
John



From as at akvaplan.niva.no  Fri Sep 15 05:32:26 2006
From: as at akvaplan.niva.no (=?iso-8859-1?Q?Agathe_S=F8rflaten?=)
Date: Fri, 15 Sep 2006 11:32:26 +0200
Subject: blt error using py2exe
Message-ID: <FF2E80F9FBBDA44687CCD28926C8260E629C64@nimrod.akvaplan.niva.no>

Hello!

I have problem of using a exe file (it did well to make the exe file with py2exe) with the blt to make gui programs with graphics with windows. It seems to work well on my computer, but when running the .exe file on another computer I got the message:

Exception in Tkinter callback

Traceback (most recent call last):

File "Tkinter.pyc", line 1345, in __call__

File "SIT_graphics_testing.py", line 910, in next2

File "P:\Forsk\_diverse administrasjon FORSK\SIT New Version by AS\dist2\PmwBlt.py", line 99, in __init__

TclError: invalid command name "::blt::vector"

Exception _tkinter.TclError: 'invalid command name "::blt::vector"' in 

 

The folder is dist2/tcl/tcl8.4 and tk8.4 and where blt2.4 is under tcl8.4. I use version python 2.4 and py2exe 0.6.5 

So is the problem that the path for tcl/tk is not included in the path variable on other computers that mine? Do I need to install the python, pmw, blt, tcl/tk on the other computer as well?

I have copied pmw.py (made by using bundlepmw.py) and pmwblt.py and pmwcolor.py into the dist2 folder in the process of making an exe-file. 

I really hope that someone can help me! 

Agathe Sorflaten

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From MonkeeSage at gmail.com  Mon Sep 25 13:32:29 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 25 Sep 2006 10:32:29 -0700
Subject: Emphasizing a gtk.Label
References: <ef91fd$ngg$1@hefestos.uned.es>
Message-ID: <1159205549.716157.112980@i42g2000cwa.googlegroups.com>

ravenheart wrote:
> What would be the best solution? How to do it? I have found how to
> change colors and underscoring but nothing else.

I don't know about the best, but I would use:

label = gtk.Label()
# Pango markup should be on by default, if not use this line
#label.set_use_markup(True)
label.set_markup("<b>Look, I'm bold</b>")

Regards,
Jordan



From jstroud at mbi.ucla.edu  Fri Sep 22 16:11:33 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 20:11:33 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.471.1158947946.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>	<mailman.438.1158898433.10491.python-list@python.org>	<c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>
	<mailman.471.1158947946.10491.python-list@python.org>
Message-ID: <VrXQg.3935$IA.1598@newssvr11.news.prodigy.com>

Robert Kern wrote:
>> Sorry. To clarify, making libpython2.5a available in a 
>> $LD_LIBRARY_PATH was necessary to build numpy and scipy.
> 
> I don't see how that could have affected anything. Static libraries 
> aren't looked up in $LD_LIBRARY_PATH. Certainly not for build-time linking.

OK--new thing learned for the day. <rant>I try things until a build 
works. I consider everything I do until acquiring a working build as 
necessary. Going back to see exactly what I did to make things work is 
not a viable option given that every new program I want requires my 
building it and all of its dependencies--a consequence of the [adjective 
deleted] beuracratic constraints (with regard to the machine on my 
desktop) that have evolved here. These constraints are no doubt a 
byproduct of the "Institute" part of my signature below, associated 
paranoia, and over-worked sys-admins.</rant>

The upside is that my entire environment turns out to be roughly 
transportable to other Linux machines on the network via an NFS home 
directory--more or less independent of the configuration of said other 
machines.

> What do your environment variables look like when you build?

euler 2% echo $CPPFLAGS
-I/data10/users/jstroud/Programs/include 
-I/data10/users/jstroud/Programs/qt/include -I/usr/include 
-I/data10/users/jstroud/Programs/include/freetype2/freetype
euler 3% echo $LD_LIBRARY_PATH
/data10/users/jstroud/Programs/lib:/data10/users/jstroud/Programs/qt/lib:/usr/lib:/usr/X11R6/lib/:/usr/local/lib:/usr/lib/gcc-lib/i386-redhat-linux/3.2.3:/data10/users/jstroud/Programs/ccp4-5.0.2/lib
euler 4% echo $LDFLAGS
-L/data10/users/jstroud/Programs/lib 
-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3

Here is how I customize my ld.so.cache:

euler 9% cat ldconf
rm ld.so.cache
/sbin/ldconfig -v -f ./ld.so.conf -C ./ld.so.cache
echo source this

euler 10% cat ld.so.conf
/data10/users/jstroud/Programs/lib
/data10/users/jstroud/Programs/qt/lib
/data10/users/jstroud/Programs/newlib
/usr/lib
/usr/local/lib
/usr/X11R6/lib
/usr/lib/qt3/lib
/usr/lib/wine
/usr/include/pgsql

Again, see the above rant for an explanation about any needless paths or 
flags--though advice and knowledge is welcome.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From timr at probo.com  Wed Sep 27 02:31:51 2006
From: timr at probo.com (Tim Roberts)
Date: Wed, 27 Sep 2006 06:31:51 GMT
Subject: Is there a regular expression for finding email address  ?
References: <1159210461.378231.307430@i42g2000cwa.googlegroups.com>
	<4nqn89Fbna0nU1@uni-berlin.de>
Message-ID: <6j6kh25slt6jtc90313ub0vrm1799agg4i@4ax.com>

"Diez B. Roggisch" <deets at nospam.web.de> wrote:
>Lad schrieb:
>> Did anyone try to find out a regular expression for finding an email
>> address in a text?
>> Thank you for the reply
>
>Entering your subject line into google as it is, using the first result 
>found, you can get one.

The OP should be aware, however, that a regular expression which matches
the complete specification in RFC-822 and RFC-2822 is approximately 7,000
characters long.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From steve at holdenweb.com  Fri Sep 15 14:38:17 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 15 Sep 2006 14:38:17 -0400
Subject: Question about pipes/os.popen
In-Reply-To: <2b07f$450abbba$4275d90a$23270@FUSE.NET>
References: <2b07f$450abbba$4275d90a$23270@FUSE.NET>
Message-ID: <eeertf$d5e$1@sea.gmane.org>

Kevin Walzer wrote:
> I'm trying to structure a Python script that streams output over a pipe.
> 
> Here is my code:
> 
> import os
> 
> cmd = os.popen('echo foo | sudo -S /usr/sbin/tcpdump -en1')
> cmd.read()
> 
> This returns output of "". I'm expecting the standard output of "tcpdump
> -en1". How does one read unbuffered output over a pipe before the pipe
> is closed in Python? Because I want the output to be updated in real
> time, writing to a temporary file and then reading that data isn't
> feasible.
> 
> I'm not sure what I'm doing wrong here.
> 
Probably expecting sudo to read the standard input for its password.

First of all, sudo doesn't always ask for your password. Secondly, when 
it does I'm pretty sure it will take care to try and do it on the 
controlling tty, not by reading stdin.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From lh84777 at yahoo.fr  Thu Sep 14 02:30:35 2006
From: lh84777 at yahoo.fr (lh84777 at yahoo.fr)
Date: 13 Sep 2006 23:30:35 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157668814.689750.299500@b28g2000cwb.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>
	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>
	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>
	<mailman.98.1157578665.5279.python-list@python.org>
	<1157599243.076703.180740@p79g2000cwp.googlegroups.com>
	<mailman.110.1157604877.5279.python-list@python.org>
	<1157638136.370020.289690@b28g2000cwb.googlegroups.com>
	<mailman.135.1157658867.5279.python-list@python.org>
	<1157668814.689750.299500@b28g2000cwb.googlegroups.com>
Message-ID: <1158215435.797966.265220@d34g2000cwd.googlegroups.com>

thanks a lot to all, i help me to learn a lot !

(i finally use the generator trick, it is great...)

best regards.



From http  Sat Sep 16 16:11:17 2006
From: http (Paul Rubin)
Date: 16 Sep 2006 13:11:17 -0700
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<12glelm8a37tp63@corp.supernews.com>
	<1158332322.661048.38360@b28g2000cwb.googlegroups.com>
	<mailman.144.1158345079.10491.python-list@python.org>
	<1158404125.762979.75880@h48g2000cwc.googlegroups.com>
Message-ID: <7xzmcz1sii.fsf@ruckus.brouhaha.com>

"Janto Dreijer" <jantod at gmail.com> writes:
> > Most dynamic NAT gateways will respond to an outgoing UDP datagram by
> > mapping the internal client's UDP port to a UDP port on the NAT
> > gateway's external interface, and setting a converse mapping that will
> > allow the server to respond, even though technically there isn't a
> > "connection". The NAT table entries will typically be timed out after a
> > short period of non-use.
> 
> So are you saying one can't use TCP to punch a hole for UDP?

You might look at some of the Q2Q stuff that simulates TCP over UDP.

http://divmod.org/trac/wiki/DivmodVertex

http://twistedmatrix.com/users/moshez/q2q.html


From Anthon.van.der.Neut at googlemail.com  Mon Sep 18 04:21:17 2006
From: Anthon.van.der.Neut at googlemail.com (Anthon)
Date: 18 Sep 2006 01:21:17 -0700
Subject: incompatible exit values between python 2.4 and 2.5
Message-ID: <1158567676.994720.103690@e3g2000cwe.googlegroups.com>

I have a small C program that restarts a python based server
application if the exit value of the
   system("python -m pythonscript arg1 arg2 ...")
is greater than 127 (using WEXITSTATUS on the result of system(..))
If the server really needs to stop I exit with
  sys.exit(0)
but if I just want it to restart (to reread all modules) I can do
  sys.exit(128)

With python 2.4, if pythonscript.py could not be found, the exit value
would be 2 and if there was some syntax error, or other exception
raised, the exit value would be 1.

While trying this out with Python 2.5 I found that the exit value on
error is always 255, so I have to change my script (not a big deal).
However two questions came up while finding out what was
the difference:

1) is this change of behaviour documented somewhere and did I miss
that, or has this not been documented (yet)
2) Is there a build-in way to set the exit value for Python in case an
exception is raised that is uncaught and causes python to terminate? (I
have now implemented something using
   try:
      ...
   except ImportError, comment:
      sys.exit(2)
   except:
      sys.exit(1)
but I still have to figure out how to print the stacktrace before
exiting with specific values.)

Regards
Anthon



From aaaWindev at gmail.com  Fri Sep 29 12:23:26 2006
From: aaaWindev at gmail.com (aaaWindev at gmail.com)
Date: 29 Sep 2006 09:23:26 -0700
Subject: windev vs python SOS
In-Reply-To: <451d15cf$0$23901$636a55ce@news.free.fr>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159528038.548533.304250@c28g2000cwb.googlegroups.com>
	<451d15cf$0$23901$636a55ce@news.free.fr>
Message-ID: <1159547006.941109.237430@m73g2000cwd.googlegroups.com>

Hi,

Bruno Desthuilliers a ?crit :
> I've never met a programmer that "loved" Windev.

I have met some here (I'm the guy with a mustache-just kidding but
actually I was there).

http://www.pcsoft.fr/pcsoft/tdftech/2006/images/Paris/07-IMG_5853.jpg

WinDev is widely used in France and that's a thing because a lot of
french programmers think that english tools "have to be better".

--
Pat



From osv at javad.com  Thu Sep 14 09:25:37 2006
From: osv at javad.com (Sergei Organov)
Date: Thu, 14 Sep 2006 17:25:37 +0400
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>
	<1158239526.673977.312840@p79g2000cwp.googlegroups.com>
Message-ID: <eebl8n$n4j$1@sea.gmane.org>

"bmearns" <bmearns at coe.neu.edu> writes:

> Quick follow up, I'm able to connect to other external FTP sites behind
> my firewall and router, no problem.

You've been told already to implement PASV command in your server (then
client will be able to use so called passive mode).

-- Sergei.



From wendell_listas at bani.com.br  Fri Sep  1 07:44:28 2006
From: wendell_listas at bani.com.br (Jonh Wendell)
Date: Fri, 01 Sep 2006 08:44:28 -0300
Subject: Help with autotools
Message-ID: <1157111069.4927.15.camel@localhost>

Hi all! I need help with autotools stuff..

My directory structure:

project_name
  src
    main.py
    others.py
  data
    ui.glade
    images.png
  po
    translations.po

I'd like to do something like that:

The files in "src" should be installed at: $prefix/lib/project_name
The files in "data" should be installed at: $prefix/share/project_name

At $prefix/bin should be create a slink:
 $prefix/bin/project_name -> $prefix/lib/project_name/main.py

The listen (http://listengnome.free.fr/) does this, but it doesn't use
autotools...

Can anyone help me?
I've tried a lot to make this work, but with no success...

Thanks,
-- 
Jonh Wendell Santana
Analista de Sistemas

http://www.bani.com.br
MSN: jonhwendell at hotmail.com
GTalk/Jabber: jonh.wendell at gmail.com
Linux User #114432



From fumanchu at amor.org  Sun Sep 10 00:25:28 2006
From: fumanchu at amor.org (fumanchu)
Date: 9 Sep 2006 21:25:28 -0700
Subject: Function metadata (like Java annotations) in Python
In-Reply-To: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
Message-ID: <1157862328.875664.189490@m73g2000cwd.googlegroups.com>

oripel wrote:
> I'm trying to attach some attributes to functions and methods, similar
> to Java annotations and .NET attributes.
> ...
> Assigning attributes to the function will work, as will assigning keys
> and values to a dictionary in an attribute. But if there are more
> decorators in the way, this could fail:
>
> @onedec
> @attr(...)
> @twodec
> def foo():
>   ...
>
> Given 'foo' now, how do I find the attributes?
> ...
> Any thoughts? Am I rehashing something old that my search skills didn't
> uncover?

There are past discussions about this; google for "python-dev decorator
metadata". For example:
http://thread.gmane.org/gmane.comp.python.devel/77506/focus=77507


Robert Brewer
System Architect
Amor Ministries
fumanchu at amor.org



From jstroud at mbi.ucla.edu  Fri Sep 22 16:57:55 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 20:57:55 GMT
Subject: License / Registration key enabled software
In-Reply-To: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
Message-ID: <n7YQg.3965$IA.3432@newssvr11.news.prodigy.com>

T wrote:
> We all know that there are many softwares that require some license key
> or registration key to enable them.  How does one implement something
> like this in python?
> 

Here's a thought: AES encrypt the bytecode dynamically for each user, 
using as a key an sha hash of their personal and corporate information, 
ethernet hardware address, and some hardware specific information, such 
as the serial number of the diskdrive on which the software will be 
installed. Along with this dynamically encrypted version of the 
software, require them to save the personal and corporate information in 
the system registry or equivalent on their computer. Then write a C or 
Fortran extension that assembles this information on the client side, 
produces the hashed key and uses it to decrypt the bytecode real-time, 
when the program launches. This bytecode can be fed to a running python 
process via a pipe and executed through skilled use of the marshal module.

Once you have implemented this system, license it to software vendors 
such as Microsoft (or better yet, scientific software companies). Please 
remember to pay me royalties in the sum of 20% gross profits for 
devising this system for you.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From rxrx at yamama.com  Fri Sep  8 19:18:14 2006
From: rxrx at yamama.com (Butternut Squash)
Date: Fri, 08 Sep 2006 23:18:14 GMT
Subject: Best Middle Tier Architechure?
References: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
	<mailman.166.1157717117.5279.python-list@python.org>
Message-ID: <WSmMg.11141$QM6.2982@bgtnsc05-news.ops.worldnet.att.net>

Felipe Almeida Lessa wrote:

> 2006/9/7, Butternut Squash <rxrx at yamama.com>:
>> right now we are using c# and .net remoting in a way that just is not
>> efficient.
>>
>> I want to rewrite a lot of what we do in python. I have seen XML-RPC and
>> soap.  Are there other options?
> 
> It surely depends on what's going to be on the other sides. If
> everything is Python, you may use Twisted.Spread. If you have to
> communicate with different languages and plataforms, maybe CORBA
> helps. Well, I'm sure a lot of people know more options than I do
> here.
> 
I have to support multiple applications using different schema and
databases.  Would like to present as much as a unified interface as
possible.


From MonkeeSage at gmail.com  Thu Sep 28 12:42:36 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 28 Sep 2006 09:42:36 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
References: <mailman.1980.1159437004.10490.python-list@python.org>
	<mailman.873.1159439669.10491.python-list@python.org>
	<451bb0fc$0$24723$626a54ce@news.free.fr>
Message-ID: <1159461756.646366.127330@k70g2000cwa.googlegroups.com>

Bruno Desthuilliers wrote:
> Brendon Towle wrote:
> > Some of your Lisp translations are subtly off...
>
> Seems correct to me. Lisp lists are linked lists, not arrays.

Actually, Brendon was correct. In lisp / scheme:

(cons 1 '(2 3)) -> (1 2 3)
(car '(1 2 3)) -> 1
(cdr '(1 2 3)) -> (2 3)

But Brendon's code also needs a correction: [a].extend(b) is wrong,
because extend is in-place and returns None, and [a] is anonymous...it
needs to be something like:

def cons(a, b):
  b.insert(0, a)
  return b

Regards,
Jordan



From ilias at lazaridis.com  Tue Sep 19 12:30:11 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 19 Sep 2006 09:30:11 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158679802.962227.15200@b28g2000cwb.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<1158679802.962227.15200@b28g2000cwb.googlegroups.com>
Message-ID: <1158683411.737232.42380@b28g2000cwb.googlegroups.com>


MonkeeSage wrote:
> Ilias Lazaridis wrote:
> > How do I do this?
>
> It's easy:
>
> def writeDebug(msg):
>   print "I do not debug things, I _evaluate_ with professionals on the
> industries! See ticket 547!\n" \
>         "Oh yeah, and %s" % msg

where do I place this function...

> ...
> class Foo:
>   writeDebug("how can I configure the interpreter for understand
> Klingon participals and noun-phrases? Must I rectify the standard
> dictionaries first?")

...thus it becomes available within class "Foo" and all other Classes?

Something like a central import?

.



From kylotan at gmail.com  Wed Sep  6 04:15:50 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 6 Sep 2006 01:15:50 -0700
Subject: Higher-level OpenGL modules
In-Reply-To: <1157495726.835786.243180@p79g2000cwp.googlegroups.com>
References: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
	<1157495726.835786.243180@p79g2000cwp.googlegroups.com>
Message-ID: <1157530550.114957.235840@m79g2000cwm.googlegroups.com>

Eric_Dexter at msn.com wrote:
> http://pyopengl.sourceforge.net/ I wouldn't begin to tell you how to
> install this..  Looks like russian roulette with virus since the .dll's
> are not available and are not linked from the site but are available
> from lots of places in the google search.

I think you're very mistaken... it's a little over-complex, but
everything you need is up there, on the installation and download
pages, and the only other .dlls you need are the OpenGL ones which the
original poster will already have.

-- 
Ben Sizer



From rokkamraja at gmail.com  Fri Sep 22 09:14:34 2006
From: rokkamraja at gmail.com (Raja)
Date: 22 Sep 2006 06:14:34 -0700
Subject: Secure MultiRobot Management
Message-ID: <1158930873.885829.246480@m73g2000cwd.googlegroups.com>

Hi,
   I am currently doing my final year project "Secure mobile Robot
Management" . I have done the theoretical aspects of it till now and
now thinking of coding it .

I would like to code in Python , but i am new to Python Network
Programming .
Some of features of my project are:

1.  Each robot can send data to any other robot.
2. Each robot can receive data from any other robot.
3.  Every Robot has atleast 1 other bot in its communication range.
4.  maximum size of a data packet is limited to 35 bytes
5.  each mobile robot maintains a table with routes
6.  all the routes stored in the routing table include a ??eld named
life-time.
7.  Route Discovery Process initiated if there is no known route to
other bot.
8. There is no server over here .
9. every bot should be able to process the data from other bots and
both multicast/unicast
     need to be supported.

Assume the environment is gridded mesh and bots exploring the area.
They need to perform a set of tasks (assume finding some locations
which are dangerous or smthing like that).

My main concern is how to go about modifying the headers such that
everything fits in 35bytes .
I would like to know how to proceed and if any links or resources in
this regard. How to modify the headers ? ie. all in 35 bytes .

Thank You, 
Raja.



From fakeaddress at nowhere.org  Fri Sep 15 05:54:00 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 15 Sep 2006 09:54:00 GMT
Subject: add without carry
In-Reply-To: <1158312804.852104.204850@i42g2000cwa.googlegroups.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
Message-ID: <YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>

Hugh wrote:
> Sorry, here's an example...
> 
> 5+7=12
> 
> added without carrying, 5+7=2
> 
> i.e the result is always less than 10

Are you looking for bitwise exclusive or? In Python it's
the '^' operator. For example:

     print 5 ^ 7


-- 
--Bryan


From willie at jamots.com  Wed Sep 20 05:40:02 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 04:40:02 -0500
Subject: byte count unicode string
Message-ID: <45110C72.3030502@jamots.com>

John Machin:

 >You are confusing the hell out of yourself. You say that your web app
 >deals only with UTF-8 strings. Where do you get "the unicode string"
 >from??? If name is a utf-8 string, as your comment says, then len(name)
 >is all you need!!!


# I'll go ahead and concede defeat since you appear to be on the
# verge of a heart attack :)
# I can see that I lack clarity so I don't blame you.

# By UTF-8 string, I mean a unicode object with UTF-8 encoding:

type(ustr)
<type 'unicode'>
 >>> repr(ustr)
"u'\\u2708'"

# The database API expects unicode objects:
# A template query, then a variable number of values.
# Perhaps I'm a victim of arbitrary design decisions :)


From ilias at lazaridis.com  Fri Sep 22 07:07:30 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 22 Sep 2006 04:07:30 -0700
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
Message-ID: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>

Another topic [1] has raised the need of a deeper teach-in.

Where can I find _compact_ documentation about

 * Differece between New Style / Old Style Classes

Are there any documents available (again: compact ones) which describe
unification attemps subjecting

 * New Style Classes
 * Old Style Classes
 * Build In Types
 * Extension Types

(note: I am aware about search engines. I ask for documentation which
other developers have found useful)

.

[1]
CONSTRUCT - Adding Functionality to the Overall System
http://groups.google.com/group/comp.lang.python/browse_thread/thread/4618ccef252c82cd

--
http://lazaridis.com



From larry.bates at websafe.com  Tue Sep 19 17:55:13 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 19 Sep 2006 16:55:13 -0500
Subject: Replace single character at given position
In-Reply-To: <ke46u3-b2j.ln1@thunderbird.tld>
References: <ke46u3-b2j.ln1@thunderbird.tld>
Message-ID: <45106741.8080905@websafe.com>

Martin Kulas wrote:
> Hello!
> 
> How do I replace a single character in a string at a given position?
> 
> From programming languages like C I expect something like that:
> 
>>>> idx = 1
>>>> s1 = "pxthon"
>>>> s1[idx] = 'y'
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: object does not support item assignment
> 
> It does not work :-(
> 
> My second attempt succeeds:
> 
>>>> s1 = s1[0:idx] + 'y' + s1[idx+1:]
>>>> s1
> 'python'
> 
> 
> Is this a typical approach in Python to replace one character
> in a string? Are there better (faster) ways to achieve my goal?
> I have looked through the methods of type ``string''
> but I have not found any appropriate method or function.
> 
> Thanks in advance,
> Martin
> 
> 
> 
You can do this:

s1=s1.replace('x','y', 1) # Only replace the first x with y

or

s1l=list(s1)
s1l[1]='y'
s1=''.join(s1l)

or your method of using slices.

All depends on what you want to do.  Quite often you use
.replace() method so you don't have to worry with the index.

-Larry Bates


From mensanator at aol.com  Tue Sep 12 02:29:28 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 11 Sep 2006 23:29:28 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
Message-ID: <1158042568.767805.221940@m73g2000cwd.googlegroups.com>


Gabriel Genellina wrote:
> At Tuesday 5/9/2006 16:23, mensanator at aol.com wrote:
>
> >I would be surprised if they had never used ANY database. A little
> >thing like dynamic field typing will simply make it impossible to
> >migrate your Sqlite data to a *real* database.
>
> Why not? Because it breaks the relational model rules?

That's part of it.

> That model
> certainly was great 30 years ago, but now things are different.

Different only in "lite" databases.

> (In
> fact, you didn't menction the word "relational", but I presume you
> were thinking of that).
> Even what you call *real* databases have a lot of incompatibilities
> among them (e.g. ORACLE does not provide an "autoincrement" type, but
> has sequences, and so on...).

But it was stated in the sqlite docs that ALL SQL databases
use static types implying that sqlite will be incompatible
with any "heavy" database should the need arise to migrate
upwards. The issue is not that there will be compatibilty
problems with any data migration but that the truth is exactly
opposite of what's claimed in Section 13.13.

I'm not saying sqlite can't be used, what I'm asking for
is that the documentation lay the facts out and I'll decide
whether I can make this work in my application. Lying about
it makes you sound like Microsoft.

> Of course you could restrict yourself
> to, by example, SQL92 entry level and be a lot more compatible.
> But if I'm using a nice OO language like Python which lets me bind
> *any* object to *any* name, why should be wrong to bind *any* object
> to *any* database column?

But SQL isn't OO, it's relational. That means JOINing tables
together on a common field. In theory, due to the comparison
hierarchy, it is impossible to do JOINs with dynamic typing
since different types can never be equal. In practice, the type
affinity kluge trys to work around this but can't do anything
if the string doesn't look like an integer when a text field
attempts to JOIN to an interger field.

> Looks a lot more "pythonic" for me.

If all you have is a hammer, everything looks like a nail.

> Of
> course, a true object database (like ZODB) is better.
>
>
>
> Gabriel Genellina
> Softlab SRL
>
>
>
>
>
> __________________________________________________
> Pregunt?. Respond?. Descubr?.
> Todo lo que quer?as saber, y lo que ni imaginabas,
> est? en Yahoo! Respuestas (Beta).
> ?Probalo ya! 
> http://www.yahoo.com.ar/respuestas



From outstretchedarm at hotmail.com  Sat Sep  9 19:16:51 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 9 Sep 2006 16:16:51 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <eduv27$8cj$1@newsreader2.netcologne.de>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<1157758128.418227.301980@e3g2000cwe.googlegroups.com>
	<eduv27$8cj$1@newsreader2.netcologne.de>
Message-ID: <1157843811.743934.97220@m79g2000cwm.googlegroups.com>

I've been using scite the last few days, and have also been
experimenting with ulipad.

thanks, again



From belred at gmail.com  Fri Sep 15 23:20:39 2006
From: belred at gmail.com (Bryan)
Date: Fri, 15 Sep 2006 20:20:39 -0700
Subject: xmlrpc with Basic Auth
In-Reply-To: <200609151647.08288.prudek@bvx.cz>
References: <200609151647.08288.prudek@bvx.cz>
Message-ID: <450B6D87.2060606@gmail.com>

Milos Prudek wrote:
> I need to use XML-RPC call with Basic Authorization in HTTP headers. I found 
> xmlrpclibBasicAuth.py, and it can be used as follows:
> 
> from xmlrpclibBasicAuth import Server
> s=Server("http://www.example.com/rpc.php","user","pwd")
> print s.system.listMethods()
> 
> Is this possible in plain xmlrpclib, without xmlrpclibBasicAuth.py? 
> 
> I found the Transport class in xmlrpclib, and it has a method "get_host_info", 
> which parses "user:pwd" out of "user:pwd at host". But when I tried to 
> instantiate Server, it threw error "unsupported XML-RPC protocol". Here is a 
> snippet:
> 
> from xmlrpclib import Server
> s=Server("user:pwd at http://www.example.com/rpc.php")
> ...
> File "/usr/local/lib/python2.3/xmlrpclib.py", line 1293, in __init__
>     raise IOError, "unsupported XML-RPC protocol"
> IOError: unsupported XML-RPC protocol
> 
> I know that I am using it incorrectly. Does the basic authentication support 
> in xmlrpclib mean something else than I take it for?
> 


i'm currently using xmlrpclib with basic auth and i use it like this:


from xmlrpclib import Server
s=Server("http://user:pwd at www.example.com/rpc.php")


bryan



From robert.kern at gmail.com  Fri Sep 22 02:12:18 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 22 Sep 2006 01:12:18 -0500
Subject: How does IPython modify the sys.path?
In-Reply-To: <1158902898.441498.122490@i42g2000cwa.googlegroups.com>
References: <1158902898.441498.122490@i42g2000cwa.googlegroups.com>
Message-ID: <eevurv$oo1$1@sea.gmane.org>

Daniel Mark wrote:

> So how dos IPython modify my sys.path without trace???

sys.path.append()

Specifically, line 321 of ipmaker.py

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From raschulmanxx at verizon.net  Sun Sep 10 16:25:45 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Sun, 10 Sep 2006 20:25:45 GMT
Subject: Unicode / cx_Oracle problem
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
	<rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
	<4mi503F63uluU1@uni-berlin.de>
Message-ID: <8ce8g29hsh0qefore6psbbrmifiai1vt34@4ax.com>

On Sun, 10 Sep 2006 11:42:26 +0200, "Diez B. Roggisch"
<deets at nospam.web.de> wrote:

>What does print repr(mean) give you?

That is a useful suggestion.

For context, I reproduce the source code:

in_file = codecs.open("c:\\pythonapps\\mean.my",encoding="utf_16_LE")
connection = cx_Oracle.connect("username", "password")
cursor = connection.cursor()
for row in in_file:
    id = row[0]
    mean = row[1]
    print "Value of row is ", repr(row)                    #debug line
    print "Value of the variable 'id' is ", repr(id)       #debug line
    print "Value of the variable 'mean' is ", repr(mean)   #debug line
    cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
        VALUES (:id,:mean)""",id=id,mean=mean)

Here is the result from the print repr() statements:

Value of row is  u"\ufeff(3,'sadness, lament; sympathize with,
pity')\r\n"
Value of the variable 'id' is  u'\ufeff'
Value of the variable 'mean' is  u'('

Clearly, the values loaded into the 'id' and 'mean' variables are not
satisfactory but are picking up the BOM.

>... 
>The oracle NLS is a sometimes tricky beast, as it sets the encoding it 
>tries to be clever and assigns an existing connection some encoding, 
>based on the users/machines locale. Which can yield unexpected results, 
>such as "Dusseldorf" instead of "D?sseldorf" when querying a german city 
>list with an english locale.

Agreed.

>So - you have to figure out, what encoding your db-connection expects. 
>You can do so by issuing some queries against the session tables I 
>believe - I don't have my oracle resources at home, but googling will 
>bring you there, the important oracle term is NLS.

It's very hard to figure out what to do on the basis of complexities
on the order of

http://download-east.oracle.com/docs/cd/B25329_01/doc/appdev.102/b25108/xedev_global.htm#sthref1042

(tiny equivalent http://tinyurl.com/fnc54

But I'm not even sure I got that far. My problems so far seem prior:
in Python or Python's cx_Oracle driver. To be candid, I'm very tempted
at this point to abandon the Python effort and revert to an all-ucs2
environment, much as I dislike Java and C#'s complexities and the poor
support available for all-Java databases.

>Then you need to encode the unicode string before passing it - something 
>like this:
>
>mean = mean.encode("latin1")

I don't see how the Chinese characters embedded in the English text
will carry over if I do that.

In any case, thanks for your patient and generous help.

Richard Schulman
Delete the antispamming 'xx' characters for email reply


From joshbloom at gmail.com  Fri Sep 22 18:35:54 2006
From: joshbloom at gmail.com (joshbloom at gmail.com)
Date: 22 Sep 2006 15:35:54 -0700
Subject: python-Levenshtein-0.10.1
In-Reply-To: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
References: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
Message-ID: <1158964554.752733.201670@k70g2000cwa.googlegroups.com>

Well I feel kind of stupid..

But here's the answer in case anyone else searches for this.

python setup.py install

-jb


joshbloom at gmail.com wrote:
> Hi Guys,
>
> I've been using this c implementation
> http://trific.ath.cx/resources/python/levenshtein/ on a windows box and
> it works great.
>
> I'd like to move my app over to linux machine and am wondering if
> someone could help me understand how to 'install' this extension on a
> linux machine?
> 
> Thanks, 
> Josh



From jon+usenet at unequivocal.co.uk  Mon Sep 25 11:52:22 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 15:52:22 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
Message-ID: <slrnehfupe.6tm.jon+usenet@snowy.squish.net>

In article <mailman.579.1159199258.10491.python-list at python.org>, Fredrik Lundh wrote:
>> Sorry, that's still not good enough.
> 
> that's not up to you to decide, though.

It's up to me to decide whether or not an argument is good enough to
convince me, thank you very much.


From wildemar at freakmail.de  Sun Sep 17 22:21:33 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Mon, 18 Sep 2006 04:21:33 +0200
Subject: Hardlinks on NTFS
In-Reply-To: <u3baqujjk.fsf@comcast.net>
References: <mailman.208.1158512901.10491.python-list@python.org>
	<u3baqujjk.fsf@comcast.net>
Message-ID: <450E02AD.5000206@freakmail.de>

Dieter Deyke wrote:
> This is my solution:
> 
> import os
> 
> def CreateHardLink(src, dst):
>     import ctypes
>     if not ctypes.windll.kernel32.CreateHardLinkA(dst, src, 0): raise OSError
> 
> os.link = CreateHardLink

Cool, thanks. :)

wildemar



From fredrik at pythonware.com  Fri Sep  1 04:04:59 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 10:04:59 +0200
Subject: pysqlite - simple problem
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
	<1157096859.197049.120950@i42g2000cwa.googlegroups.com>
Message-ID: <ed8pjc$um$1@sea.gmane.org>

John Machin wrote:
>> So this has to be something stupidly simple... but for the life of me I
>> can't see it.
>
> With the '?' paramstyle, the 2nd arg to cursor.execute() should be a
> *sequence* (typically a tuple) of the values that you are inserting.
>
> Tty this:
> cur.execute("INSERT INTO foo (id) VALUES (?)", (num, ))
>
> This is standard Python DBAPI stuff - you would probably get a similar
> response from other gadgets e.g. mySQLdb -- IOW it's not specific to
> pysqlite.

that mistake gives an entirely different error message, at least under 2.2.0
(which is the version shipped with 2.5):

>>> import sqlite3
>>> db = sqlite3.connect("foo.db")
>>> cur = db.cursor()
>>> cur.execute("CREATE TABLE foo (id INTEGER)")
<pysqlite2.dbapi2.Cursor object at 0x00B7CEF0>
>>> cur.execute("INSERT INTO foo (id) VALUES (?)", 200)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current
statement uses 1, and there are -1 supplied.
>>> cur.execute("INSERT INTO foo (id) VALUES (?)", [200])
<pysqlite2.dbapi2.Cursor object at 0x00B7CEF0>

(not sure "-1 arguments supplied" is any less confusing, though)

</F> 





From morris.slutsky at gmail.com  Fri Sep 29 12:13:51 2006
From: morris.slutsky at gmail.com (morris.slutsky at gmail.com)
Date: 29 Sep 2006 09:13:51 -0700
Subject: the actual C code - Re: Scoping bugs in an embedded Python
	interpreter - Wizards please
In-Reply-To: <mailman.951.1159543677.10491.python-list@python.org>
References: <1159542176.977456.258590@i42g2000cwa.googlegroups.com>
	<mailman.951.1159543677.10491.python-list@python.org>
Message-ID: <1159546431.369350.177440@m73g2000cwd.googlegroups.com>


Fredrik Lundh wrote:
> morris.slutsky at gmail.com wrote:
>
> > But .... I'm suffering from serious scoping bugs.  I hope someone here
> > can help me with them.
> >
> > First of all, if I type in something like;
> >
> > def f(x):
> >      if x==1:
> >           return x
> >      else:
> >           return x * f(x-1)
> >
> > and then go
> > print f(5)
> >
> > I get an error.  It says 'global name 'f' is not defined'.  So
> > recursion won't work because of some odd scoping bug.
>
> looks like the globals are all messed up.  it would help to see the
> actual C code.
>
> </F>

Thanks!

I initialize the interpreter like this:


static PyObject *glb, *loc;

void startPython() {
	Py_Initialize();
	loc = PyDict_New();
	glb = PyDict_New();
	PyDict_SetItemString (glb, "__builtins__", PyEval_GetBuiltins ());

	Py_InitModule("myIO", myIOMethods);
        ...... other modules initialization ......

        executeFromResource(IDR_STARTUP_PY);
        ....... other startup scripts ........
}

I pretty much do the same thing for executing text resources or for
interactive commands - (and get the same bug either way) - actual code
from executeFromResource follows ....


int  executeFromResource(int nResourceID) {
	PyObject * src, *exception, *value, *traceback, *object, *result;
.....miscellaneous Win32 stuff to capture resource from ID
.....and to strip out 0x0D characters and add NULL terminator.
.....char *  "no0x0D" points to executable Python text
.....msg is something like <<resource #103>>

	src = Py_CompileString(no0x0D, msg, Py_file_input);

	free(no0x0D);

	if (src != NULL) {
		/* it compiled.  run it! */
		result = PyEval_EvalCode ((PyCodeObject *)src, glb, loc);
		if (PyErr_Occurred()) PyErr_Print();
		Py_XDECREF(result);
		Py_XDECREF(src);
		return 1;
	}
	/*	report whatever error we got */
	if (nResourceID != IDR_STARTUP_PY)
	{
		/*	report it to the console */
		PyErr_Print();
		PyErr_Clear();
	} else {
		/*	if startup script dies, we have no console */
		PyErr_Fetch (&exception, &value, &traceback);
		PyArg_ParseTuple (value, "sO", &msg, &object);
		PyErr_Clear();
		Py_XDECREF (exception);
		Py_XDECREF(value);
		Py_XDECREF(traceback);
		outputLogDialog("Error in Python startup\r\n");
		outputLogDialog(msg);
		outputLogDialog("\r\n");
	}
	return 0;
}

I had figured that referencing PyObject * glb and * loc was sufficient
to provide proper variable scoping.  Am I missing something here?  I
must be.



From tim.peters at gmail.com  Thu Sep 14 20:56:31 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Thu, 14 Sep 2006 20:56:31 -0400
Subject: min() & max() vs sorted()
In-Reply-To: <1158280516.219493.61600@p79g2000cwp.googlegroups.com>
References: <1158280516.219493.61600@p79g2000cwp.googlegroups.com>
Message-ID: <1f7befae0609141756i303e3f48j9cdfac589b1bc10@mail.gmail.com>

[MRAB]
> Some time after reading about Python 2.5 and how the built-in functions
> 'min' and 'max' will be getting a new 'key' argument, I wondered how
> they would treat those cases where the keys were the same, for example:
>
> L = ["four", "five"]
> print min(L, key = len), max(L, key = len)
>
> The result is:
>
> ('four', 'four')

min() and max() both work left-to-right, and return the minimal or
maximal element at the smallest index.

> I would've thought that min(...) should return the same as
> sorted(...)[0] (which it does)

It does, but only because Python's sort is stable, so that minimal
elements retain their original relative order.  That implies that the
minimal element with smallest original index will end up at index 0
after sorting.

> and that max(...) should return the same as sorted(...)[-1] (which it doesn't).

Right -- although I don't know why you'd expect that.

> I think that's just down to a subtlety in the way that 'max' is written.

It's straightforward, skipping error cases:

def max(*args):
     is_first_arg = True
     for arg in args:
         if is_first_arg:
             winner = arg
             is_first_arg = False
        elif arg > winner:    # only difference in min() is "<" here instead
             winner = arg
    return winner


From viliotti at asteria.it  Wed Sep  6 10:14:12 2006
From: viliotti at asteria.it (1willy2)
Date: 6 Sep 2006 07:14:12 -0700
Subject: ricerca
Message-ID: <1157552052.499817.23240@m79g2000cwm.googlegroups.com>

Stiamo cercando uno sviluppatore Python esperto in Vue 5 Infinite.

Grazie

Willy



From dbraden at invalid.add  Wed Sep 13 23:39:36 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 03:39:36 GMT
Subject: Looking for the Perfect Editor
In-Reply-To: <1158183392.526021.212220@d34g2000cwd.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158183392.526021.212220@d34g2000cwd.googlegroups.com>
Message-ID: <Y94Og.938$TV3.21@newssvr21.news.prodigy.com>

stu wrote:
> Wildemar Wildenburger wrote:
>> Finally! I usually try to stay out of these discussions; yet I'm always
>> disappointed at how few people seem to be using jEdit and how long it
>> takes them to come out of their holes.
> 
> well when people start reccomending things like textpad which is crap.
> textpad requires payment, and if someone is gonna pay for it
> they might as well buy ultraedit instead..
> 
> but they need to atleast checkout jedit first :)
> 
> with its plugins for jython + jpydebug...
> 
> -stu
> 

Hi Stu und "Willie",

I'm a total newbie to Python, and what(for me) are appropriate tools. I 
will be running it under (sigh) Windows. I'm using IDLE for the time 
being, aided by Notepad++. I don't yet know what jython is about, or 
for, but I'm up for trying jedit for python. Which plugins give me a 
good start for scientific stuff? I am not interested in Web/html apps.
And is there an IDE out there that lets us create GUI dialogs along the 
lines of what MS provides with Excel and, I assume, VB?

Thanks.
DaveB


From tim at tdw.net  Thu Sep  7 07:19:59 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 7 Sep 2006 12:19:59 +0100
Subject: sending emails using python
In-Reply-To: <W51725264.948.6929.1@mx-extra>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
	<W51725264.948.6929.1@mx-extra>
Message-ID: <9afea2ac0609070419y5f143f06u124f2924ad20023e@mail.gmail.com>

On 07/09/06, Sybren Stuvel <sybrenUSE at yourthirdtower.com.imagination> wrote:
> Tim Williams enlightened us with:
> > Can you send email via it using outlook express or a similar
> > POP3/IMAP mail client?
>
> Wouldn't you use a SMTP client to send email?

Outlook Express *is* a mail client that uses SMTP as the outbound protocol.

:)


From jgodoy at gmail.com  Sat Sep 30 13:24:31 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 30 Sep 2006 14:24:31 -0300
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de> <451ea5cc$1@news.vo.lu>
Message-ID: <87lko1w9m8.fsf@gmail.com>

Antoine De Groote <antoine at vo.lu> writes:

> Just to get it clear at the beginning, I started this thread. I'm not a newbie

Sorry :-)  I got to this wrong conclusion because of the way I read your
message.

> an expert either, but I'm quite comfortable with the language by now. It's
> just that, when I started Python I loved it for its simplicity and for the
> small amount of code it takes to get something done. So the idea behind my

See that being "small" is not all that important.  From the Zen of Python:

    Explicit is better than implicit.

> original post was that the Perl/Ruby way takes even less to type (for the
> regex topic of this discussion, I'm not generalizing), and that I like a
> lot. To me (and I may be alone) the Perl/Ruby way is more "beautiful" (Python
> culture: Beautiful is better than ugly) than the Python way (in this
> particular case) and therefore I couldn't see the reasons.

You can import the re module and use regular expressions in Python, but you
probably know that.

> Some of you say that this regex stuff is used rarely enough so that being
> verbose (and therefore more readable ?) is in these few cases the better
> choice. To me this a perfectly reasonable and maybe it is just true (as far as
> one can talk about true/false for something subjective as this). I dont' know
> (yet) ;-)

It is to me. :-)  If you're parsing simple structures then it might not be to
you (for complex structures you'd end up with some sort of parser).

> I just have to learn accept the fact that Python is more verbose more often
> than Ruby (I don't know Perl really). Don't get me wrong though, I know the
> benefits of this (at least in some cases) and I can understand that one opts
> for it. Hopefully I will end up some day preferring the Python way.

One thing that is also interesting: code completion.  One editor can help you
write "startswith" but it can't help with "/^".  The same goes for "endswith"
compared to "$/".  

I just mentioned this because in the argument of "less code to write leads to
less bugs" doesn't mean that we have typed all what is written :-)

-- 
Jorge Godoy      <jgodoy at gmail.com>


From grahn+nntp at snipabacken.dyndns.org  Wed Sep  6 10:24:37 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 6 Sep 2006 14:24:37 GMT
Subject: python vs java
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
Message-ID: <slrneftfqa.31i.grahn+nntp@frailea.sa.invalid>

On Wed, 6 Sep 2006 17:53:29 +0530, Aravind <aravindmail007 at yahoo.co.in> wrote:
> hi,
>
> some of my friends told that python and java are similar in the idea of
> platform independency. Can anyone give me an idea as i'm a newbie to java
> and python but used to C++.

Well, what Java and Python (and some other languages) have in common is a
large standard library.

The C++ standard library is smaller, and doesn't cover things like advanced
file I/O, networking, concurrency, or user interfaces. You either have to
find third-party portable libraries for the things you want to do, or target
a specific platform.

As a side note, Python differs from Java by happily including non-portable
things in its standard library. If Unix people need access to poll(2); fine,
then they make it available, even though it won't work on e.g. Win32.
And document that it isn't portable.

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From fdu.xiaojf at gmail.com  Fri Sep 22 02:16:52 2006
From: fdu.xiaojf at gmail.com (fdu.xiaojf at gmail.com)
Date: Fri, 22 Sep 2006 14:16:52 +0800
Subject: Is it possible to save a running program and reload next time
 ?
In-Reply-To: <eeu8b9$108$1@fuerst.cs.uni-magdeburg.de>
References: <mailman.386.1158824225.10491.python-list@python.org>	<FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>	<mailman.412.1158845232.10491.python-list@python.org>
	<eeu8b9$108$1@fuerst.cs.uni-magdeburg.de>
Message-ID: <45137FD4.8060708@gmail.com>

Hans Georg Krauthaeuser wrote:
> fdu.xiaojf at gmail.com wrote:
>   
>> Can objects be saved and reloaded by "Pickle"  ?  I have tried but no
>> success.
>>
>>     
> Yes, that's the intended use of pickle/cPickle. There are examples in
> the docs:
>
> http://docs.python.org/lib/module-pickle.html
>
> What have you tried and what didn't work?
>
> Hans Georg
>   
My program is a genetic algorithm based program, so I thought I just 
need to save a generation object of the population and reload it later 
then my program could continue. But after I saved a generation object 
from within python using cPickle and reload it from another program, it 
said that some class object couldn't be found. Now I realized that a 
program cannot be suspended and reloaded by just simply dumping and 
loading using cPickle/Pickle.

I will try stackless python later.

Thanks a lot .

Regards,

xiaojf



From ldo at geek-central.gen.new_zealand  Thu Sep 28 21:07:28 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 13:07:28 +1200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
Message-ID: <efhril$nrm$1@lust.ihug.co.nz>

In message <1159455615.546936.83170 at m7g2000cwm.googlegroups.com>, bearophileHUGS at lycos.com wrote:

> Mirco Wahab:
>> But where is the %b in Python?
> 
> Python doesn't have that. You can convert the number to a hex, and then
> map the hex digitds to binary strings using a dictionary, like this:
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440528

How about this: (where n is the integer you want to convert):

    "".join([["0", "1"][(1 << i & n) != 0] for i in range(int(math.ceil(math.log(n, 2))) - 1, -1, -1)])



From uymqlp502 at sneakemail.com  Thu Sep 14 00:10:04 2006
From: uymqlp502 at sneakemail.com (Russ)
Date: 13 Sep 2006 21:10:04 -0700
Subject: parameter files
In-Reply-To: <1158197393.728067.179420@e3g2000cwe.googlegroups.com>
References: <1158190017.832356.180050@h48g2000cwc.googlegroups.com>
	<1158197393.728067.179420@e3g2000cwe.googlegroups.com>
Message-ID: <1158207004.664774.145740@i3g2000cwc.googlegroups.com>


> I would try a configuration file, instead of a python module.
> See ConfigParser:
> <http://docs.python.org/lib/module-ConfigParser.html>.
> You can save values for each "run" in a separate [section].
> Execfile is a pretty big hammer for this.

Hey, that looks interesting, but those docs don't do it for me. Can you
point me to some more extensive examples of how to use ConfigParser?
Thanks.



From chris.cavalaria at free.fr  Tue Sep 26 05:39:20 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Tue, 26 Sep 2006 11:39:20 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <pan.2006.09.26.04.45.52.690588@REMOVEME.cybersource.com.au>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
	<pan.2006.09.26.04.45.52.690588@REMOVEME.cybersource.com.au>
Message-ID: <4518f52f$0$19015$636a55ce@news.free.fr>

Steven D'Aprano a ?crit :
> On Mon, 25 Sep 2006 16:11:38 +0200, Christophe wrote:
>> This is useless AND annoying at the same time.
> 
> But people like us don't screw up our email address in the first place,
> and if we do, we know how to fix it. Not everybody is like us.

So you say that the better answer is not to teach them to be careful 
when they fill those forms. It's to annoy them and teach them to 
copy&paste mistakes instead!

Besides, what is so special with electronic forms that we have to go 
through all kind of tricks to make sure the user doesn't make mistakes 
when regular paper forms just assume the user will be careful when he 
fills it? Must be some kind of IQ draining field emited by all the 
computers which only computer experts are immune to :D


From ptmcg at austin.rr._bogus_.com  Mon Sep 18 15:46:49 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 18 Sep 2006 19:46:49 GMT
Subject: Code Golf Challenge : 1,000 Digits Of Pi
References: <mailman.232.1158591996.10491.python-list@python.org>
	<1158602663.906546.246970@h48g2000cwc.googlegroups.com>
	<1158605612.814018.110830@m7g2000cwm.googlegroups.com>
Message-ID: <JICPg.5009$vD2.5001@tornado.texas.rr.com>

<bearophileHUGS at lycos.com> wrote in message 
news:1158605612.814018.110830 at m7g2000cwm.googlegroups.com...
> Paddy:
>> Is having good 'code-fu' worthwhile? It may be trivial to score but do
>> the results show who iss the better programmer?
>
> With Python you can't win, because Perl and Ruby allow for shorter
> programs.
> Beside the language, you win if you can invent more tricks, that you
> have to avoid in real code, because it must be very readable.
> The positive side of this game is that you exercise yourself, so you
> get to know the programming language better, and you learn all the
> corner cases of your language. Knowing them is useful, to avoid them
> when you program for real, to avoid some kind of bugs generated by
> corner cases.
>
> Bye,
> bearophile
>

Success lies in the journey, not the destination.

or in Yoda-speak:

In the journey success lies, in the destination not.

-- Paul




From steve at holdenweb.com  Thu Sep 21 12:46:05 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 21 Sep 2006 12:46:05 -0400
Subject: Working with email and mailbox module
In-Reply-To: <1158840271.942540.85640@d34g2000cwd.googlegroups.com>
References: <1158840271.942540.85640@d34g2000cwd.googlegroups.com>
Message-ID: <eeufiv$c04$1@sea.gmane.org>

Nirnimesh wrote:
> I want to extract emails from an mbox-type file which contains a number
> of individual emails.
> 
> I tried the python mailbox and email modules individually, but I'm
> unable to combine them to get what I want. Mailbox allows me to iterate
> over all the mails but doesn't give me access the individual messages
> of a multipart mail. The email.Message module provides this, but I'm
> unable to iterate through all the messages with this module.
> 
> Here's what I want:
> 
> Get a list of all messages from mbox-file
> For each message, be able to read the header or body individually (so
> that I can apply some operation)
> 
> Does someone have experience in doing something of this sort?
> 

When you create your mailbox you need to provide a factory function, 
otherwise you get rfc822.Message objects.

It's not obvious to me what that facory should be: I'm guessing you 
could get away with something like

mymailbox = mailbox.UnixMailbox(fp, email.parser.Parser().parse)

but I am far from convinced that will work, and have no time for testing 
right now.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From daniel.huangfei at gmail.com  Sat Sep 30 04:18:08 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 30 Sep 2006 01:18:08 -0700
Subject: why logging re-raise my exception and can't be caught?
In-Reply-To: <4o6mqhFd6o95U1@uni-berlin.de>
References: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>
	<4o6mqhFd6o95U1@uni-berlin.de>
Message-ID: <1159604288.653364.188060@c28g2000cwb.googlegroups.com>

thank your so much firstly.

I feel really ashamed...

I think I did read through all examples and docs, but I just took for
granted that all the  info(), warning(), debug() like functions behaves
much alike except the level name.. so the description you listed really
was ignored,, 

tks again for your help.. I do appreciate it.

daniel



From jon+usenet at unequivocal.co.uk  Mon Sep 25 13:20:41 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 17:20:41 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>
	<mailman.581.1159200379.10491.python-list@python.org>
	<slrnehg086.7sa.jon+usenet@snowy.squish.net>
	<mailman.585.1159204290.10491.python-list@python.org>
Message-ID: <slrnehg3v0.7sa.jon+usenet@snowy.squish.net>

In article <mailman.585.1159204290.10491.python-list at python.org>, Brian Quinlan wrote:
>> Now you're just being ridiculous. In this thread you have been rude,
>> evasive, insulting, vague, hypocritical, and have failed to answer
>> substantive points in favour of sarcastic and erroneous sniping - I'd
>> suggest it's you that needs to worry about being taken seriously.
> 
> Actually, at least in the context of this mailing list, Fredrik doesn't 
> have to worry about that at all. Why? Because he is one of the most 
> prolific contributers to the Python language and libraries

I would have hoped that people don't treat that as a licence to be
obnoxious, though. I am aware of Fredrik's history, which is why I
was somewhat surprised and disappointed that he was being so rude
and unpleasant in this thread. He is not living up to his reputation
at all. Maybe he's having a bad day ;-)


From rdrink at artic.edu  Sun Sep  3 17:38:51 2006
From: rdrink at artic.edu (rdrink)
Date: 3 Sep 2006 14:38:51 -0700
Subject: sqlite 'ownership' problems
Message-ID: <1157319531.590763.37310@m79g2000cwm.googlegroups.com>

I will try to keep this as suscinct as possible as it might be an
obvious Q.....
I am just getting into Py/sqlite (with a fair amount of PHP/MySQL
background), and am posting this as much for the other noobs as
myself....
I started learning sqlite by tinkered around at the command line:
creating db's, tables, populating them. etc. All fine.
Then I moved to Python.. and immediately noticed that for a db I had
created at the cmnd-line, e.g. 'test.db' with a table 'foo', I would
get the error "_sqlite.DatabaseError: no such table: foo". My suspition
was that this is a "feature" of sqlite ('flat file' vs. a dynamic db in
MySQL) where sqlite is 'sensetive' to who creates it... Which seems to
be borne out by that fact that I have since written one Py script (in
IDLE) which creates and populates a db, and another that can retrieve
the data. But...

Now I have moved on to Blender (w/Python), and seem to be up against
the same problem, same error.
(And yes I could prolly just run the whole thing within Blender/Py. But
then why use a database? The whole point is to do my mass calculations
(which take about 20 minutes) in IDLE, stuff all that into a database.
and then just access that data via Py/sqlite.)

I suspect that the answer lies within using sqlites "network"
abilities... but as a noob I don't even know where to start... So
advice/examples would be greatly appreciated.

rd



From raschulmanxx at verizon.net  Fri Sep  8 16:02:29 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Fri, 08 Sep 2006 20:02:29 GMT
Subject: cx_Oracle question
References: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>
	<edsd10$18po$1@ulysses.news.tiscali.de>
Message-ID: <uui3g2toko516futtbvbe03uvkua62uuqd@4ax.com>

Richard Schulman:
>> cursor.execute("""select mean_eng_txt from mean
>>                   where mean_id=:arg_1""",arg_1)

Uwe Hoffman:
>cursor.execute("""select mean_eng_txt from mean
>                    where mean_id=:arg_1""",{"arg_1":arg_1})

R.S.'s error message:
>> Traceback (most recent call last):
>>    File "oracle_test.py", line 7, in ?
>>       cursor.execute('select mean_eng_txt from mean where
>>       mean_id=:arg_1',arg_1)
>> TypeError: expecting a dictionary, sequence or keyword args

Excellent! Vielen Dank, Uwe (and Diez).

This also turned out to work:

cursor.execute("""select mean_eng_txt from mean
                  where mean_id=:arg_1""",arg_1=arg_1)

Richard Schulman
For email reply, remove the xx part


From blue99 at interia.pl  Mon Sep 11 11:41:30 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 11 Sep 2006 08:41:30 -0700
Subject: best way of testing a program exists before using it?
In-Reply-To: <mailman.256.1157987147.5279.python-list@python.org>
References: <mailman.256.1157987147.5279.python-list@python.org>
Message-ID: <1157989290.649744.167690@h48g2000cwc.googlegroups.com>


Hari Sekhon wrote:
> I am writing a wrapper to a binary command to run it and then do
> something with the xml output from it.
>
> What is the best way of making sure that the command is installed on the
> system before I try to execute it, like the python equivalent of the
> unix command "which"?
>
> Otherwise I'd have to do something like:
>
> if os.system('which somecommand') != 0:
>     print "you don't have %s installed" % somecommand
>     sys.exit(1)
>
> I know that isn't portable which is why a python solution would be
> better (although this will run on unix anyway, but it'd be nice if it
> ran on windows too).

IMHO this is pretty portable:

>>> def is_on_path(fname):
...     for p in os.environ['PATH'].split(os.pathsep):
...             if os.path.isfile(os.path.join(p, fname)):
...                     return True
...     return False

HTH,
Rob



From my.chat.friends at gmail.com  Sat Sep 16 23:42:32 2006
From: my.chat.friends at gmail.com (my.chat.friends at gmail.com)
Date: 16 Sep 2006 20:42:32 -0700
Subject: Computer Vitals
Message-ID: <1158464552.444762.192990@h48g2000cwc.googlegroups.com>

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From gagsl-py at yahoo.com.ar  Sat Sep 16 02:13:16 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 16 Sep 2006 03:13:16 -0300
Subject: float questions
In-Reply-To: <094ng2916miuds69d9l0rul7r893esobu9@4ax.com>
References: <094ng2916miuds69d9l0rul7r893esobu9@4ax.com>
Message-ID: <7.0.1.0.0.20060916030503.03d423f8@yahoo.com.ar>

At Saturday 16/9/2006 02:56, spiffy wrote:

>after some calculations i have this number as a result...
>-7.1054273576010019e-015

This means -7.1054... * 10**(-15) and it's a compact way of writing 
-0.0000000000000071054...

>what does the 'e' mean? is this an error?

It is not an error, just a very small number

>i want to be able to round this number to 3 places, but round() does
>not work....

Does not work, or you get 0.000? That's normal.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From jstroud at mbi.ucla.edu  Fri Sep 22 16:14:00 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 20:14:00 GMT
Subject: +1 QOTW
In-Reply-To: <mailman.473.1158948412.10491.python-list@python.org>
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
	<mailman.473.1158948412.10491.python-list@python.org>
Message-ID: <cuXQg.3939$IA.3333@newssvr11.news.prodigy.com>

Terry Reedy wrote:
> <olsongt at verizon.net> wrote in message 
> news:1158942909.066705.245650 at e3g2000cwe.googlegroups.com...
> 
>>Did anyone else crack up when Larry Wall described python with the
>>statement:
>>
>>Python, as the "anti-Perl," is heavily invested in maintaining Order.
>>
>>In the state of the onion address?
>>
>>http://www.perl.com/pub/a/2006/09/21/onion.html
> 
> 
> There is also this:
> 'But I think the basic Perl paradigm is "Whatever-oriented programming."'

This reminds me of when I realized I could become more efficeint as 
stocker in a warehouse by implementing a "wherever inventory system".

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From bulliver at gmail.com  Mon Sep  4 14:40:33 2006
From: bulliver at gmail.com (Darren Kirby)
Date: Mon, 4 Sep 2006 11:40:33 -0700
Subject: Twisted vs POS (Plain-old sockets)
In-Reply-To: <20060903160703.1717.594778383.divmod.quotient.37975@ohm>
References: <d416abde0609030019u5a75d6b1mdc809c88284370da@mail.gmail.com>
	<20060903160703.1717.594778383.divmod.quotient.37975@ohm>
Message-ID: <d416abde0609041140j798de2b3xf4d857afecbb346a@mail.gmail.com>

On 9/3/06, Jean-Paul Calderone <exarkun at divmod.com> wrote:
> On Sun, 3 Sep 2006 00:19:17 -0700, Darren Kirby <bulliver at gmail.com> wrote:
> >Hey all,
> >
> >I have a (FOSS) project here that I am about to start that requires TCP
> >networking support, and in fact, will require me to design and implement a
> >(text based) protocol from scratch.
>
> I'm sorry.

Don't be sorry, I am doing this for fun and to learn...

>
> If there are features you don't need, then don't use them.  What does their
> existence cost you?  Are you going to use the sunaudio module from the
> standard library?  If not, is this an argument in favor of using C++ instead
> of Python?

Well, the question I have is if it is worth digging through all the
complexity (in the code itself and docs) for the few nuggets I do
need... I am well aware I do not need to use everything...

> As for documentation, many people say it is lacking, but perhaps one person
> in a thousand points out _how_ or _where_ it is lacking.  Unfortunately it
> is difficult to improve things (or even determine if they really are lacking)
> with this level of feedback.

I am certainly not trying to dump on twisted. As for what is lacking,
the many methods I looked up that say simply "Not Documented" would be
the biggest problem....

> Keep in mind that in addition to the online documentation, there is a Twisted
> book, an extremely helpful twisted mailing list (with years of archives
> online), and an IRC channel populated at nearly all hours of the day with
> people who can answer Twisted questions.

I am aware of the book, and if I decide to go the twisted route I
would certainly purchase it. However, not that I am overly swayed by
amazon reviews, but the consistent majority of them have said that the
book is big on specifics (as in, explaining the example code and not
much else), and small on the 'big-picture' so to speak. If this is
true I might as well stay with the docs.

>
> Talking to the TCP/IP stack is surprisingly difficult to get right.  Since
> it is extremely unlikely that you actually _care_ about all of the random,
> stupid differences between different TCP implementations, you should use
> Twisted, since it does its best to hide these differences and instead
> present a uniform API.

Fair enough...

> If you use bare sockets, you will need to learn many of these quirks yourself,
> frequently through a bug report from a user, since many of them are
> undocumented.

True, though keep in mind this is as much of a learning exercise for
me as it is to get an app out the door quick.

>
> Twisted is great.  It will speed up your development time and reduce the
> amount of defects you need to deal with.  It will
>

OK, I will stick with twisted and see if I can't figure it out, and
perhaps play with asyncore and see for myself what will work. Please
note I was really just looking for some anecdotes from experienced
programmers that may have found themselves in my situation, and the
solutions they chose...

> Hope this helps,

Sure it did, thanks for taking the time to respond, also thanks to
Guido and Istvan,

> Jean-Paul

-d
-- 
darren kirby :: Part of the problem since 1976 :: http://badcomputer.org
"...the number of UNIX installations has grown to 10, with more expected..."
- Dennis Ritchie and Ken Thompson, June 1972


From sjmachin at lexicon.net  Tue Sep 12 09:18:49 2006
From: sjmachin at lexicon.net (John Machin)
Date: 12 Sep 2006 06:18:49 -0700
Subject: error
In-Reply-To: <1158066623.060805.262800@p79g2000cwp.googlegroups.com>
References: <mailman.345.1158064847.5279.python-list@python.org>
	<1158066623.060805.262800@p79g2000cwp.googlegroups.com>
Message-ID: <1158067129.931764.103540@d34g2000cwd.googlegroups.com>


Rob Wolfe wrote:
> prashant.burghate at wipro.com wrote:
> > Hi,
> [...]
> > Step 3: Wrote the given script of multipication in a file named as
> > multiply (using vi editor)
>
> The name of module should be multiply.py
>

module != source_file
module don't have no ferschlugginer dots in its name



From moqtar at gmail.com  Fri Sep 29 06:11:17 2006
From: moqtar at gmail.com (Kirt)
Date: 29 Sep 2006 03:11:17 -0700
Subject: File I/O
Message-ID: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>

Hi! I need some help in file I/O

I have an xml file..

<Top>
<Body1>xyz</Body1>
</Top>

I want to open these file in append mode and add the line
<Body2>abd</Body2>

Such that i have:

<Top>
<Body1>xyz</Body1>
<Body2>xyz</Body2>
</Top>

can anyone show me the way to achieve this?? 

thanx



From deets at nospam.web.de  Thu Sep 14 11:42:42 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 14 Sep 2006 17:42:42 +0200
Subject: Outbound port on sockets
In-Reply-To: <1158241354.764008.214710@m73g2000cwd.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>
	<1158239526.673977.312840@p79g2000cwp.googlegroups.com>
	<mailman.90.1158240404.10491.python-list@python.org>
	<1158241354.764008.214710@m73g2000cwd.googlegroups.com>
Message-ID: <4mtbjsF7kpeuU1@uni-berlin.de>

bmearns schrieb:
> Passive mode is implemented, the client isn't trying to use it.
> Besides, that doesn't really help me anyway, all it means is that I
> have to resolve port forwarding for the server, instead of for the
> client.
> 
> I think what this basically comes down to is that either with PASV or
> PORT, there's a relatively arbitrary port number being specified, and I
> can't figure out how to get my router to forward it since I don't know
> what it will be in advance, short of forwarding all the 64 thousand
> some odd valid ports.

But you can restrict the numbers of ports the server will use to a 
certain range! It's common for ftp to allow only for so many connections 
at the same time, so reserve a port-range of 20 or so for your server 
and configure the router to forward them.

> The thing that gets me is that I can connect to the other FTP servers,
> and (according to the responses echoed by the command line FTP client),
> they're using PORT, not PASV. So somehow, my client is specifying some
> arbitrary port for the server to connect to, and that port is actually
> being forwarded through my router.

No idea how that happens, but there are protocol aware fire walls.

Diez


From MonkeeSage at gmail.com  Sat Sep 23 15:21:43 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 12:21:43 -0700
Subject: Need compile python code
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
Message-ID: <1159039303.207317.57810@k70g2000cwa.googlegroups.com>

MonkeeSage wrote:
> >>> import py_compile
> >>> py_compiler.compile('file.py')
      ^^^^^^^^^^^

Should be:

>>> py_compile.compile('file.py')



From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:03:16 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:03:16 +1200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
	<mailman.629.1159250957.10491.python-list@python.org>
Message-ID: <efaj9p$fqq$2@lust.ihug.co.nz>

In message <mailman.629.1159250957.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Lawrence D'Oliveiro wrote:
> 
>>         yield dict(zip(Fields, NextRow))
> 
> the OP didn't ask for a field name => value mapping, though.

What other kind of mapping could you produce?


From sjmachin at lexicon.net  Fri Sep 22 10:09:00 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 07:09:00 -0700
Subject: unicode mystery/problem
In-Reply-To: <mailman.453.1158927918.10491.python-list@python.org>
References: <1158774055.273842.24200@m7g2000cwm.googlegroups.com>
	<1158789886.997992.261940@i3g2000cwc.googlegroups.com>
	<mailman.453.1158927918.10491.python-list@python.org>
Message-ID: <1158934140.735949.58270@m7g2000cwm.googlegroups.com>


Petr Jake? wrote:
> John, thanks for your extensive answer.
> >> Hi,
> >> I am using Python 2.4.3 on Fedora Core4 and  "Eric3" Python IDE
> >> .
> >> Below mentioned code works fine in the Eric3 environment. While trying
> >> to start it from the command line, it returns:
> >>
> >> Traceback (most recent call last):
> >>   File "pokus_1.py", line 5, in ?
> >>     print str(a)
> >> UnicodeEncodeError: 'ascii' codec can't encode character u'\xc1' in
> >> position 6: ordinal not in range(128)
>
> JM> So print a works, but print str(a) crashes.
>
> JM> Instead, insert this:
> JM>    import sys
> JM>    print "default", sys.getdefaultencoding()
> JM>    print "stdout", sys.stdout.encoding
> JM> and run your script at the command line. It should print:
> JM>     default ascii
> JM>     stdout x
> ****  in the command line it prints:  *****
> default ascii
> stdout UTF-8
> JM> here, and crash at the later use of str(a).
> JM> Step 2: run your script under Eric3. It will print:
> JM>     default y
> JM>     stdout z
>
> ****  in the Eric3 it prints:  ****
> if the # -*- Eencoding: utf_8 -*- is set than:
>
> default utf_8
> stdout
> unhandled AttributeError, "AsyncFile instance has no attribute
> 'encoding' "
>
> if the encoding is not set than it prints:
>
> DeprecationWarning: Non-ASCII character '\xc3' in file
> /root/eric/analyza_dat_TPC/pokus_1.py on line 26, but no encoding
> declared; see http://www.python.org/peps/pep-0263.html for details execfile(sys.argv[0], self.debugMod.__dict__)
>
> default latin-1
> stdout
> unhandled AttributeError, "AsyncFile instance has no attribute
> 'encoding' "
>
> JM> and then should work properly. It is probable that x == y == z ==
> JM> 'utf-8'
> JM> Step 3: see below.
>
> >>
> >> ========== 8< =============
> >> #!/usr/bin python
> >> # -*- Encoding: utf_8 -*-
>
> JM> There is no UTF8-encoded text in this short test script. Is the above
> JM> encoding comment merely a carry-over from your real script, or do you
> JM> believe it is necessary or useful in this test script?
> Generally, I am working with string like u'DISKOV\xc1 POLE' (I am
> getting it from the database)
>
> My intention to use >> # -*- Encoding: utf_8 -*- was to suppress
> DeprecationWarnings if I use utf_8 in the code (like u'DISKOV\xc1 POLE')
>
> >>
> >> a= u'DISKOV\xc1 POLE'
> >> print a
> >> print str(a)
> >> ========== 8< =============
> >>
> >> Even it looks strange, I have to use str(a) syntax even I know the "a"
> >> variable is a string.
>
> JM> Some concepts you need to understand:
> JM> (a) "a" is not a string, it is a reference to a string.
> JM> (b) It is a reference to a unicode object (an implementation of a
> JM> conceptual Unicode string) ...
> JM> (c) which must be distinguished from a str object, which represents a
> JM> conceptual string of bytes.
> JM> (d) str(a) is trying to produce a str object from a unicode object. Not
> JM> being told what encoding to use, it uses the default encoding
> JM> (typically ascii) and naturally this will crash if there are non-ascii
> JM> characters in the unicode object.
>
> >> I am trying to use ChartDirector for Python (charts for Python) and the
> >> method "layer.addDataSet()" needs above mentioned syntax otherwise it
> >> returns an Error.
>
> JM> Care to tell us which error???
> you can see the Error description and author comments here:
> http://tinyurl.com/ezohe

You have two different episodes on that website; adding the one we have
been discussing gives *three* different stories:

Episode 1:

The error description: "TypeError: Error converting argument 1 to type
PCc" -- you should ask him "What is type PCc???" If arg 1 is an
arbitrary str object, which byte values could it possibly be objecting
to?

The author comments: "The error code usually means the filename is not
a text string, ..." (1) Input file or output file? Is it possible that
one or more bytes are not allowable in a filename? (2) Is it possible
for you to give him the exact args that you are passing in (use print
repr(arg) before the call), and for him to tell you the *exact* reason,
not the "usual" reason?

Episode 2: Evidently arg is a str object, but passing in str(arg) and
just plain arg give different results??? I doubt it. print repr(arg)
and type(arg) and see what you've actually got there.

>
> >>
> >> layer.addDataSet(data, colour, str(dataName))
> I have try to experiment with the code a bit.
> the simplest code where I can demonstrate my problems:
> #!/usr/bin python
> import sys
> print "default", sys.getdefaultencoding()
> print "stdout", sys.stdout.encoding
>
> a=['P\xc5\x99\xc3\xad','Petr Jake\xc5\xa1']
> b="my nice try %s" % ''.join(a).encode("utf-8")

So ''.join(a) is a str object, encoded in utf-8 *already*.
Please try to understand:
(1) unicode_object.encode('utf-8') produces a str_object # in utf-8
encoding
(2) str_object.decode('utf-8') produces a unicode object # if
str_object contains valid utf-8.
(3) str_object.encode('anything') is a nonsense; it is the equivalent
of str_object.decode('ascii').encode('anything') and will typically
fail, as your next error message shows.

What were you trying to do?? I don't understand the relationship
between this little exercise and Episodes 1, 2, & 3.

Try to concentrate on what your data is (u"DISKOetcetc" is a unicode
string, but then you say that str(x) should be unnecessary because x is
already a str object!?) and what you need to have to get it passed
through to that package's methods.


> print b
>
> When I run it from the command line i am getting:
> sys:1: DeprecationWarning: Non-ASCII character '\xc3' in file pokus_1.py on line 26, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details
>
> default ascii
> stdout UTF-8
>
> Traceback (most recent call last):
>   File "pokus_1.py", line 8, in ?
>     b="my nice try %s" % ''.join(a).encode("utf-8")
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xc5 in position 1: ordinal not in range(128)
> 

As expected. 

Regards,
John



From hg at nospam.com  Sat Sep  9 10:46:12 2006
From: hg at nospam.com (hg)
Date: Sat, 09 Sep 2006 09:46:12 -0500
Subject: mysqldb + multi-threading
In-Reply-To: <0piMg.136445$LF4.125458@dukeread05>
References: <0piMg.136445$LF4.125458@dukeread05>
Message-ID: <uyAMg.136562$LF4.79044@dukeread05>

hg wrote:
> Hi,
> 
> I am writing a transaction server (socket-based) under windows.
> 
> I use mysqldb to log info into MySQL.
> 
> It is all working and I need now to decide whether to use forks
> (CreateProcess I guess) or threads.
> 
> I saw in another thread that some db engines did have issues with being
> called from threads.
> 
> My gut feeling is to use threads (note: each transaction is finite, so
> the process/thread die fairly quickly).
> 
> Any insight ?
> 
> 
> hg

A thread on the mysqldb forum:

 By: Rob Steele - robsteele
  RE: Do I need to enable thread safe mysql lib
2002-10-18 11:35
Yup. You also need to either synchronize the reading and writing threads
so that only one can get at the database at a time or else open a second
connection. You should probably use sepearate connections, one for each
thread.

hg


From 2006 at jmunch.dk  Sun Sep 24 10:31:20 2006
From: 2006 at jmunch.dk (Anders J. Munch)
Date: Sun, 24 Sep 2006 16:31:20 +0200
Subject: QuoteSQL
In-Reply-To: <ef4d30$8h4$1@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<451541db$0$4171$ba624c82@nntp02.dk.telia.net>
	<ef4d30$8h4$1@lust.ihug.co.nz>
Message-ID: <45169706$0$4169$ba624c82@nntp02.dk.telia.net>

Lawrence D'Oliveiro wrote:
>>>         elif Ch == "'" or Ch == "\"" or Ch == "\\" :
>>>             Ch = "\\" + Ch
>> Always sad to see an SQL DBMS willfully violate the SQL standard.
> 
> Why is that a violation of SQL?

Taking another look, I might be wrong: Your code uses double quotes, and 
since SQL uses single quotes for string literals, it just might be a 
compatible extension.

Otherwise I would have taken note of the backslash escapes.  E.g. '\\' 
is a two-character SQL string literal.

- Anders


From larry.bates at websafe.com  Wed Sep 13 08:14:01 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 13 Sep 2006 07:14:01 -0500
Subject: auto upgrade scripts?
In-Reply-To: <1158045742.490620.29520@h48g2000cwc.googlegroups.com>
References: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>
	<4505EB1E.5070007@websafe.com>
	<1158045742.490620.29520@h48g2000cwc.googlegroups.com>
Message-ID: <pJmdnaEoW6iPa5rYnZ2dnUVZ_v6dnZ2d@comcast.com>

stefaan.himpe at gmail.com wrote:
>> Auto-upgrade from what to what?
>> -Larry Bates
> 
> Interesting question.
> 
> In my case I want my program to check for (e.g.) bug-fix releases on
> some location (network drive or ftp), and if available, allow to
> automatically download and install them.
> Kind of like the AutoUpgrade functionality in .net (*shudder*) ;)
> 
> Best regards,
> Stefaan.
> 

Since you mention .NET and didn't state otherwise, I'm assuming
Windows platform?  You should probably take a look at Inno Installer
with web update wizard:

http://www.powerprogrammer.co.uk/web-update-download/web-update-download.html

-Larry


From fredrik at pythonware.com  Sun Sep  3 10:10:13 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 16:10:13 +0200
Subject: Pmw installation problem
In-Reply-To: <1157292166.731947.150210@p79g2000cwp.googlegroups.com>
References: <1157292166.731947.150210@p79g2000cwp.googlegroups.com>
Message-ID: <edeno4$oqv$1@sea.gmane.org>

vedran_dekovic at yahoo.com wrote:

> When I download Pmw,and .py files copy to lib,then in python shell
> I write:

where did you copy what files?  you're supposed to place the *entire* 
Pmw directory somewhere on your path (e.g. under site-packages).  see

     http://pmw.sourceforge.net/doc/starting.html

</F>



From pink at odahoda.de  Thu Sep 21 06:01:44 2006
From: pink at odahoda.de (Benjamin Niemann)
Date: Thu, 21 Sep 2006 12:01:44 +0200
Subject: Can I inherit member variables?
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
Message-ID: <eetnu9$gj7$1@online.de>

Hello,

lm401 at cam.ac.uk wrote:

> I'm trying to work with the following idea:
> 
> class animal:
>   def __init__(self, weight, colour):
>     self.weight = weight
>     self.colour = colour
> 
> 
> class bird(animal):
>   def __init__(self, wingspan):
>     self.wingspan = wingspan
>     print self.weight, self.colour, self.wingspan
> 
> class fish(animal):
>   def __init__(self, length):
>     self.length = length
>     print self.weight, self.colour, self.length
> 
> 
> So basically I have a base class (animal) that has certain attributes.
> When animal is inherited by a specific instance, further attributes are
> added, but I need to have access to the original attributes (weight,
> colour). When I run my code from within the derived class, self.weight
> and self.colour are not  inherited (although methods are inherited as I
> would have expected).

You'll have to invoke the __init__ method of the superclass, this is not
done implicitly. And you probably want to add the weight and colour
attributes to your subclass in order to pass these to the animal
constructor.

class fish(animal):
  def __init__(self, length, weight, colour):
    animal.__init__(self, weight, colour)
    self.length = length
    print self.weight, self.colour, self.length


HTH

-- 
Benjamin Niemann
Email: pink at odahoda dot de
WWW: http://pink.odahoda.de/


From donn at u.washington.edu  Fri Sep 15 16:42:17 2006
From: donn at u.washington.edu (Donn Cave)
Date: Fri, 15 Sep 2006 13:42:17 -0700
Subject: Question about pipes/os.popen
References: <2b07f$450abbba$4275d90a$23270@FUSE.NET>
	<mailman.145.1158345496.10491.python-list@python.org>
Message-ID: <donn-5254A9.13421715092006@gnus01.u.washington.edu>

In article <mailman.145.1158345496.10491.python-list at python.org>,
 Steve Holden <steve at holdenweb.com> wrote:

[ someone's command that fails, run in popen ]
> > cmd.read()
> > 
> > This returns output of "".
...
> > I'm not sure what I'm doing wrong here.
> > 
> Probably expecting sudo to read the standard input for its password.

Also probably having inflated expectations for popen(),
and other related functions for that matter.  Where in
most Python library functions you can expect an exception
when something fails, that doesn't apply to failures in
shell commands.  Not that it strictly couldn't be done,
but on the whole I haven't noticed that anyone cares.

   Donn Cave, donn at u.washington.edu


From larry at hastings.org  Thu Sep 28 22:07:23 2006
From: larry at hastings.org (Larry Hastings)
Date: 28 Sep 2006 19:07:23 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
Message-ID: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>

This is such a long posting that I've broken it out into sections.
Note that while developing this patch I discovered a Subtle Bug
in CPython, which I have discussed in its own section below.

____________
THE OVERVIEW

I don't remember where I picked it up, but I remember reading years
ago that the simple, obvious Python approach for string concatenation:
        x = "a" + "b"
is slow.  Obviously it's fine for the simple case above, but if you're
adding together twenty-five things:
        x =  a + b + c + d + ... + y
the performance is terrible, as the interpreter creates temporary
objects
for each intermediate result.  (a + b, then (a + b) + c,
then ((a + b) + c) + d, and so on.)

The suggested idiom for fast string concatenation was this:
        x = "".join([a, b, c, d, ... y])
This works fine.  But I don't like this approach, not only because it's
kind of ugly and inobvious, but because it violates the "one obvious
way
to do it" principle.

I mentioned all this to a friend of mine (Mike Thornburgh), and told
him matter-of-factly that I'd like to fix this, but the design of
Python
simply precluded it.  He said "no it doesn't!" and proceeded to
describe
in great detail an approach to permit fast string concatenation using
+.
I have implemented what he suggested--with only slight changes--and
present it to you below.  I only had to touch four files, and only did
major surgery on one.  The resulting Python passes the test suite as
well
as my unmodified locally-built Python 2.5.  (I didn't install the
external
source trees for stuff like SQLite, so it fails those tests.)

Note that times have changed; using Python 2.5, a + b + c isn't *that*
much slower than "".join([]).  But is is still slower.  Or, was--with
my
patch, a + b + c becomes *the fastest method* for string concatenation.
Hooray!

(It didn't pay off as *much* as I'd hoped, but it's still an
improvement.)

_________
THE PATCH

The core concept: adding two strings together no longer returns a pure
"string" object.  Instead, it returns a "string concatenation" object
which holds references to the two strings but does not actually
concatenate
them... yet.  The strings are concatenated only when someone requests
the
string's value, at which point it allocates all the space it needs and
renders the concatenated string all at once.

More to the point, if you add multiple strings together (a + b + c),
it *doesn't* compute the intermediate strings (a + b).

Upsides to this approach:

        * String concatenation using + is now the fastest way to
concatenate
          strings (that I know of).

        * Throw off the shackles of "".join([]), you don't need it
anymore.

        * Did I mention it was faster?

Downsides to this approach:

        * Changes how PyStringObjects are stored internally; ob_sval is
no
          longer a char[1], but a char *.  This makes each StringObject
          four bytes larger.

        * Adds another memory dereference in order to get the value of
          a string, which is a teensy-weensy slowdown.

        * Would force a recompile of all C modules that deal directly
          with string objects (which I imagine is most of them).

        * Also, *requires* that C modules use the PyString_AS_STRING()
          macro, rather than casting the object and grabbing ob_sval
          directly.  (I was pleased to see that the Python source
          was very good about using this macro; if all Python C
          modules are this well-behaved, this point is happily moot.)

        * On a related note, the file Mac/Modules/MacOS.c implies
          that there are Mac-specific Python scripts that peer
          directly into string objects.  These would have to be
          changed to understand the new semantics.

        * String concatenation objects are 36 bytes larger than
          string objects, and this space will often go unreclaimed
          after the string is rendered.

        * When rendered, string concatenation objects storing long
          strings will allocate a second buffer from the heap to
          store the string.  So this adds some minor allocation
          overhead (though this is offset by the speed gain from
          the approach overall).

        * Will definitely need some heavy review before it could
          go in, in particular I worry I got the semantics surrounding
          "interned" strings wrong.


Internally, a "string concatenation" object is the same as a "string"
object with two extra fields: an array of references to string objects
(and string concatenation objects), and a count.  Also, ob_sstate now
stores a third flag, indicating whether or not the string is a string
concatenation object.  External users don't need to worry about these
details, they just use PyString_AS_STRING() and all is well with their
world.

I've already added some optimizations to the approach:

        * If you're adding a string to an existing string concatenation
          object whose reference count is 1, who isn't full, and who
          hasn't been rendered yet, it adds the string directly to the
          existing concatenation object (rather than creating a new
one).
          This works whether the existing object is on the right or the
          left side.

        * The general case is a + b + c ..., where you're only adding
          strings to the *end*.  This will build a degenerate tree
where
          the first slot points to the child.  The tree for
concatenating
          the first twenty-two letters of the alphabet would look like
this:

                [0 1 2 3 4 5 6 7]
                 | | | | | | | |
                 | v v v v v v v
                 | p q r s t u v
                 |
                 v
                [0 1 2 3 4 5 6 7]
                 | | | | | | | |
                 | v v v v v v v
                 | i j k l m n o
                 |
                 v
                [0 1 2 3 4 5 6 7]
                 | | | | | | | |
                 v v v v v v v v
                 a b c d e f g h

          The rendering function is by necessity recursive.  However,
          it is optimized for this shape; when the tree looks like
this,
          it will be rendered purely iteratively--no recursion.

        * If, after rendering, the resulting string will be small
enough
          to fit inside the extra space normally used by the
concatenation
          object, the final string will be copied on top of this
otherwise
          now-wasted space.

______________
THE BENCHMARKS

Benchmark 1:
        def add(a, b, c, ... t): return a + b + c + ... + t
        for i in range(10000000): add("aaa", "bbb", "ccc", ..., "ttt")
Benchmark 2:
        for i in range(10000000): x = "aaa" + "bbb" + "ccc" + ... +
"ttt"
Benchmark 3:
        for i in range(10000000): x = "".join(["aaa", "bbb", "ccc",
..., "ttt"])
Benchmark 4:
        for i in range(10000000):
                x = "aaa"
                x += "bbb"
                x += "ccc"
                ...
                x += "ttt"
Benchmark 5:
        for i in range(10000000):
                array = []
                array.append("aaa")
                array.append("bbb")
                array.append("ccc")
                ...
                array.append("ttt")
                x = "".join(array)
Benchmark 6:
        for i in range(10000000):
                x = cStringIO.StringIO()
                x.write("aaa")
                x.write("bbb")
                x.write("ccc")
                ...
                x.write("ttt")

Benchmark | 2.5 release | 2.5 locally built | 2.5 modified | %
improvement
        1 |       32.1s |             32.8s |        26.7s |
22.8%
        2 |       18.7s |             18.7s |        15.1s |
23.8%
        3 |       16.1s |             16.2s |        16.6s |
-1.1%
        4 |       64.6s |             64.0s |        57.1s |
12.1%
        5 |       74.1s |             79.4s |        76.7s |
3.5%
        6 |      126.0s |  too slow, didn't bother!

______________
THE SUBTLE BUG

While developing this patch, I discovered a subtle bug in Python.
It happened only on one gruesome test in the middle of test_descr.py.
The problem was: '' == '' was returning False.

Starting on line 1116 of stringobject.c we have this:

	if (op == Py_EQ) {
		/* Supporting Py_NE here as well does not save
		   much time, since Py_NE is rarely used.  */
		if (a->ob_size == b->ob_size
		    && (a->ob_sval[0] == b->ob_sval[0]
			&& memcmp(a->ob_sval, b->ob_sval,
				  a->ob_size) == 0)) {
			result = Py_True;
		} else {
			result = Py_False;
		}
		goto out;
	}

The bug is with the "a->ob_sval[0] == b->ob_sval[0]".  This is
apparently
a speed optimization; check that the first byte is the same before
proceeding with the memcmp(). But it does this even when *both* strings
are *zero length*!  I doubt the Python source tree has an official
position on what the first byte of a zero-length string should be, but
I assert that it should be undefined.  In practice, it's seemingly
always
set to the same value in the released Python, but with my changes it's
now possible for them to be different.

I think it's sinful to compare the first bytes of zero-length strings.
Therefore I suggest this bugfix:

		if (a->ob_size == b->ob_size
/* >> change >> */  && ( (!a->ob_size || a->ob_sval[0] ==
b->ob_sval[0])
			&& memcmp(a->ob_sval, b->ob_sval,

I've already incorporated this fix in my code.

__________
THE FUTURE

If this patch is accepted, it paves the way for another cheap
optimization: string slices could be done without copying.
Add another field into the PyString structure: a reference
to another PyString *.  If non-NULL, it means the local ob_sval
actually points into the ob_sval owned by that other PyString *.
It'd be another four bytes, but we'd only need to incur that
when creating a slice; we could set a bit in ob_sstate indicating
"this is a slice", and if so we'd have to copy-on-write ob_sval,
and free the reference when the object was destroyed.

______________
THE SUBMISSION

I don't know the protocol from this point out; should I email the patch
somewhere?  Put it up on a web page?  Post some diff output?  (Or just
forget about it entirely?)

Also, for what it's worth: I fixed the .dsp so pythoncore builds under
VC6 again.  I would be happy to submit that separately.  (What can I
say, old habits die hard.  I can't stand the newer Microsoft IDEs.)


Cheers,


/larry/

p.s. No, I haven't looked at a Unicode port yet.  If there's interest
in
this patch at all, I might take a stab at it.



From ai at hotmail.com  Wed Sep 27 19:23:21 2006
From: ai at hotmail.com (ai)
Date: Wed, 27 Sep 2006 23:23:21 GMT
Subject: New fast PHP like scripting language
Message-ID: <JJDSg.9297$6S3.517@newssvr25.news.prodigy.net>

We are looking for hard core web developers that are interested in 
checking out a new PHP like scripting engine. The scripting language is 
called LSP, which means Lua Server Pages. Lua is a very fast and easily 
learned scripting language.

Please sign up for our new group and start developing advanced LSP 
web-applications. We welcome your feedback.

http://barracudaserver.com/examples/BarracudaDrive/bdwlsp.html

Thanks,
http


From fredrik at pythonware.com  Mon Sep 25 11:45:34 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 17:45:34 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
Message-ID: <ef8tiu$p5d$1@sea.gmane.org>

Jon Ribbens wrote:

> Sorry, that's still not good enough.

that's not up to you to decide, though.

</F>



From paddy3118 at netscape.net  Mon Sep 18 14:04:23 2006
From: paddy3118 at netscape.net (Paddy)
Date: 18 Sep 2006 11:04:23 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
In-Reply-To: <mailman.232.1158591996.10491.python-list@python.org>
References: <mailman.232.1158591996.10491.python-list@python.org>
Message-ID: <1158602663.906546.246970@h48g2000cwc.googlegroups.com>


Carl Drinkwater wrote:

> For those who haven't heard of codegolf.com, it can be described as
> "allowing you to show off your code-fu by trying to solve coding
> problems using the least number of keystrokes."
Is having good 'code-fu' worthwhile? It may be trivial to score but do
the results show who iss the better programmer?

Methinks I'll pass.



From mayfart at w-4.de  Tue Sep  5 14:26:17 2006
From: mayfart at w-4.de (Kai Mayfarth)
Date: Tue, 05 Sep 2006 20:26:17 +0200
Subject: a Pywin Outlook adress Book Question
Message-ID: <edkfga$u2r$2@news01.versatel.de>

Hello

Ist there a way to search a Adressbook over Python for a special contact.
I know how i read and write a contact, but know i have to search over 
Python for some contacts, because the adress book has know over 1700 
entrys, and it tooks a long time to get them all over the Com object to 
python.

Kai Mayfarth


From timr at probo.com  Sat Sep 23 00:32:40 2006
From: timr at probo.com (Tim Roberts)
Date: Sat, 23 Sep 2006 04:32:40 GMT
Subject: Is it possible to change a picture resolution with Python?
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
	<1158768080.415936.41750@i3g2000cwc.googlegroups.com>
	<m9c4h214piecdn0c5qe5g02990h7n4bv6p@4ax.com>
	<1158823290.157982.311910@h48g2000cwc.googlegroups.com>
Message-ID: <qvd9h293b2din429pja7p5vlunaovg6fur@4ax.com>

"Lad" <python at hope.cz> wrote:
>
>Tim ,
>Thank you for the explanation,
>And I must also thank you all you others, who helped me.
>Particularly,  bearophile and Max.
>
>Now I use the following code , that provided bearophile,
>
>from PIL import Image
>im = Image.open("output3.jpg")
>nx, ny = im.size
>im2 = im.resize((int(nx*2.5), int(ny*2.5)), Image.BICUBIC)
>im2.save("2000.png",dpi=(520,520))
>
>and very important thing was dpi=(520,520) that provided Max,

I'm glad that you achieved your goal, but I don't think we have quite made
our point yet.  I want to make sure this is clear, in case you need to do
this again.

The dpi=(520,520) is NOT the "very important thing".  The only thing that
does is change the number in the header.  It doesn't change the image at
all.  The "very important thing" in this script is the "im.resize", which
smoothly stretches the image so that it has 2.5 times as many pixels as
before.  It is that stretching which allows you to change the DPI in the
header, and yet still have it print at the same size.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From ptmcg at austin.rr._bogus_.com  Sat Sep  9 13:46:29 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Sat, 09 Sep 2006 17:46:29 GMT
Subject: pyparsing listAllMatches problem
References: <op.tfl7fdwumlmssi@fafoi.lan>
Message-ID: <V5DMg.17072$dl.12913@tornado.texas.rr.com>

"don pasquale" <don.pasquale at blabla_tzimeil.com> wrote in message 
news:op.tfl7fdwumlmssi at fafoi.lan...
> hello,
> I'm using pyparsing and trying to parse something like:
> test="""Q(x,y,z):-Bloo(x,"Mitsis",y),Foo(y,z,1243),y>28,x<12,x>3"""
>
> and also have all comparison predicates in a separate list apart from the 
> parse tree. So my grammar has this line in it:
>
> Comparison_Predicate = Group(variable + oneOf("< >")  + 
> integer).setResultsName("pred",listAllMatches=True)
>
> but it doesn't work at all... only the last comp.pred. gets in the pred 
> attribute...

Thanks for posting this test case.  This is a bug in pyparsing.  I'll have a 
fix ready shortly.

-- Paul




From Roberto.Bonvallet at cern.ch  Mon Sep  4 11:09:30 2006
From: Roberto.Bonvallet at cern.ch (Roberto Bonvallet)
Date: 4 Sep 2006 15:09:30 GMT
Subject: This seems to crash my program and gives me errors on the
	#include statements
References: <1157375279.790255.321010@b28g2000cwb.googlegroups.com>
	<mailman.10334.1157378750.27775.python-list@python.org>
	<1157382189.013651.326640@b28g2000cwb.googlegroups.com>
Message-ID: <edhfja$j0d$1@sunnews.cern.ch>

Eric_Dexter at msn.com wrote:
> It is giving errors on the import statements..  I will get an error on
> the line where I import this routine import csoundroutines and then the
> when I import the the program that tried to import csoundroutines I get
> an error and on down the chain..

Please paste here the errors you get, and paste also the relevant code (not
the whole program) that triggers that error.

-- 
Roberto Bonvallet


From python.list at tim.thechases.com  Fri Sep 22 15:46:22 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 22 Sep 2006 14:46:22 -0500
Subject: Newbie RE question
In-Reply-To: <1158950663.902262.235410@m73g2000cwd.googlegroups.com>
References: <1158950663.902262.235410@m73g2000cwd.googlegroups.com>
Message-ID: <45143D8E.8050402@tim.thechases.com>

> I would like to search for any of the strings in r'/\:*?"<>|' in a
> string using RE module.  Can someone tell me how?

use the search() method of the regexp object.

r = re.compile(r'[/\:*?"<>|]')
results = r.search(a_string)

or, if you're interested in the first location:

r.finditer(target).next().start()

Or you can do it without the RE module:

s = set(r'/\:*?"<>|')
results = ''.join(c for c in a_string if c in s)

or, if you're interested in the indexes

index = ([i for i,c in enumerate(a_string) if c in s] or [-1])[0]

which could also be done as

index = -1
for i,c in enumerate(a_string):
	if c in s:
		index = i
		break



YMMV,

-tkc









From thorsten at thorstenkampe.de  Mon Sep 11 19:35:18 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 12 Sep 2006 00:35:18 +0100
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
	<ee3vme$cjj$1@panix3.panix.com>
	<65sk091eu0l3.axwa5wrm2dtq.dlg@40tude.net>
	<HliNg.2734$No6.53788@news.tufts.edu>
Message-ID: <of35bfgdmwb6.14r33xqjvzdly$.dlg@40tude.net>

* John Salerno (2006-09-11 19:58 +0100)
> Thorsten Kampe wrote:
> 
>> But sqlite is not "pure Python" because it's just a wrapper around
>> sqlite (which has to be installed separately)...
> 
> But that's the point. Once 2.5 is released, sqlite is built-in. Unless 
> there's more to it that I don't know, and something must still be 
> installed? But that makes no sense.

I was under the impression that you still have to install the sqlite
executable but that's only for compiling from source: "If you're
compiling the Python source yourself, note that the source tree
doesn't include the SQLite code, only the wrapper module."

Thorsten


From apardon at forel.vub.ac.be  Thu Sep 28 05:29:58 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 09:29:58 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<Xns984B746409A6BOKB@199.45.49.11>
	<slrnehmta1.rcu.apardon@rcpc42.vub.ac.be>
	<efg15c$4vr$2@news.albasani.net>
Message-ID: <slrnehn5gm.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-28, Georg Brandl <g.brandl-nospam at gmx.net> wrote:
> Antoon Pardon wrote:
>> On 2006-09-27, OKB (not okblacke) <brenNOSPAMbarn at NObrenSPAMbarn.net> wrote:
>>> Antoon Pardon wrote:
>>>
>>>> To begin with this already fails:
>>>> 
>>>>>>> for i in xrange(Top):
>>>> ...   print i
>>>
>>>     	What do you expect this to do?  Loop forever?
>> 
>> Yes that is what I would expect.
>
> For unterminating loops, use while 1:, and if you need the counter,
> itertools.count().

Neither of these will work if you want an easy way to choose
between repeating a specific number of times and an infinite
loop.

Of course you can include special tests in your code, but the
purpose of values like Top is to eliminate special case code
in a number of situations.

>> If someone would ask me
>> to implement a function like xrange it would look something
>> like the following (*)
>> 
>>   def xrange(start=1, stop, step=1):
>> 
>>     while start < stop:
>>       yield start
>>       start += step
>> 
>> Since Top is supposed to be bigger than any other value this would
>> indeed loop forever. The only reason that this doesn't work with
>> the builtin, is because the builtin xrange insist on its arguments
>> being ints instead of allowing duck typing.
>
> xrange() *could* be implemented as shown above, but do you realize
> that it would be a severe performance hit compared to the current
> implementation, which doesn't give almost all users a benefit at all?

That code was just meant to illustrate behaviour, one could always
code as follows:

  def _xrange(start=1, stop, step=1):

    # see implemantation above

  def xrange(start=1, stop, step=1):

    if (type(start), type(stop), type(step)) == (int, int, int):
      return builtin.xrange(start, stop, step)
    else:
      return _xrange(start, stop, step)
      
Just to show that with some thinking one could come up with
an implementation that was fast in most cases and yet would
allow for other types than ints if that would make sense.

-- 
Antoon Pardon


From MonkeeSage at gmail.com  Tue Sep 19 13:22:51 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 19 Sep 2006 10:22:51 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<1158679802.962227.15200@b28g2000cwb.googlegroups.com>
	<1158683411.737232.42380@b28g2000cwb.googlegroups.com>
Message-ID: <1158686571.184132.273190@h48g2000cwc.googlegroups.com>

Ilias Lazaridis wrote:
> where do I place this function...

The place where you want it to be.

> ...thus it becomes available within class "Foo" and all other Classes?

Anything defined in the top-level (i.e., the sys.modules['__main__']
namespace) is accessible in every scope...but I assume you already know
that.

You could also use a super-duper super class from which to derive all
your other classes, and add/replace any methods you want there:

class lazaridis(object):
  def evaluate(self, community):
    if 1 is 1:
      print "Evaluating %s... Result: failed!" % community

class Foo(lazaridis, str):
  pass

f=Foo('This has been a test of the lazaridis evaluation system')
f.evaluate('Python')
f.evaluate('Ruby')
f.evaluate('Java')
print f

> Something like a central import?

That would probably be the most logical thing to do.

But again, I assume you already know all this, so why are you asking?
Is this part of the evaluation process?

Regards,
Jordan



From gagsl-py at yahoo.com.ar  Thu Sep 28 22:50:47 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 23:50:47 -0300
Subject: Can string formatting be used to convert an integer to its
	binary form ?
In-Reply-To: <efhril$nrm$1@lust.ihug.co.nz>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
Message-ID: <7.0.1.0.0.20060928234442.06c3e6f8@yahoo.com.ar>

At Thursday 28/9/2006 22:07, Lawrence D'Oliveiro wrote:

>How about this: (where n is the integer you want to convert):
>
>     "".join([["0", "1"][(1 << i & n) != 0] for i in 
> range(int(math.ceil(math.log(n, 2))) - 1, -1, -1)])

Uhm... so to generate a binary string you have to import the math 
module, convert the integer to float, compute a non-standard 
logarithm, and then...
What if n<=0?
Too much, don't you think? :)


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From timr at probo.com  Fri Sep 15 02:56:17 2006
From: timr at probo.com (Tim Roberts)
Date: Fri, 15 Sep 2006 06:56:17 GMT
Subject: Is there a way to find IP address?
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
Message-ID: <vijkg29n5joh7npfufr4hqv8mubs0e67lr@4ax.com>

"Lad" <python at hope.cz> wrote:
>
>Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
>If a user  is behind a proxy, I will log  proxy's IP address only.
>Is there a way how to find a real IP user's address?

Not reliably, but why would you want to?  That IP address is not reachable
from your server anyway.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From kay.schluehr at gmx.net  Wed Sep 27 10:44:51 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 27 Sep 2006 07:44:51 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <45198937@news.vo.lu>
References: <zkfSg.30$1n3.400@news.tufts.edu><45198937@news.vo.lu>
Message-ID: <1159368291.461732.222080@i3g2000cwc.googlegroups.com>


Antoine De Groote wrote:
> John Salerno wrote:
> > It's a nice thought that a person can earn a living programming with
> > Python, which is fun enough to use just for its own sake. But for
> > someone like me (i.e. no programming experience) it's always a little
> > disheartening to see that most (if not all) job descriptions that ask
> > for Python still require some C/C++ or other language knowledge. I
> > suppose this isn't an issue if you studied CS in college, because you
> > would have been exposed to many languages.
> >
> > But what if you are an expert Python program and have zero clue about
> > other languages? Can you still earn a living that way, or do most/all
> > companies require multiple language proficiency?
> >
> > (I suppose this isn't exactly a Python problem, either. I'm sure even
> > companies that don't use Python still use multiple languages. Maybe it
> > isn't a good idea to focus entirely on a single language, depending on
> > the job at hand.)
>
> hmm, I don't know, but I can't imagine someone being a Python (or any
> other language) wizard, without knowing other languages. Does that even
> exist?
>
> Regards,
> antoine

I thought that would be quite common among Java programmers unless they
are oldtimers?



From reid at reidster.net  Sat Sep  9 13:40:20 2006
From: reid at reidster.net (Reid Priedhorsky)
Date: Sat, 09 Sep 2006 12:40:20 -0500
Subject: Secure Postgres access
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
	<pan.2006.09.08.01.11.22.368386@umn.edu>
	<7xvenzt9zz.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2006.09.09.17.40.19.754820@reidster.net>

On Thu, 07 Sep 2006 18:36:32 -0700, Paul Rubin wrote:

> Reid Priedhorsky <reid at umn.edu> writes:
>> > Wouldn't they need a database password?
>> 
>> Well, right now, no. I have Postgres configured to trust the OS on who is
>> who. 
> 
> You trust the OS on the client machine, but not the client machine's
> users?  Does it run identd?  Maybe you could use that.  I'd consider
> this shaky for any real security application, but it might be better
> than nothing depending on what you're doing.

Hi Paul,

Thanks for your help.

No -- I suppose I wasn't clear. There are two machines involved:

A) Database server. Run by me. I trust the OS on who is who, and there is
only one user (me). So database clients run on this box don't require
a password.

B) Work machine. Run by others, many users. I'd like to also run my
database client (Python) here. SSH tunnel is unsatisfactory because other
folks can slip down the tunnel after I set it up and then connect to the
DB as me. Having the DB on (A) listen to the Internet as well as localhost
for connections is also unsatisfactory, because I don't want to set up
database passwords.

What I'd like is functionality similar to what Subversion does with
"svn+ssh://" URLs: an SSH tunnel that accepts only one connection and
doesn't have race conditions.

Thanks again,

Reid


From jimburton1 at gmail.com  Fri Sep 29 07:18:21 2006
From: jimburton1 at gmail.com (jimburton)
Date: 29 Sep 2006 04:18:21 -0700
Subject: File I/O
In-Reply-To: <1159527353.447436.107610@i42g2000cwa.googlegroups.com>
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
	<1159527353.447436.107610@i42g2000cwa.googlegroups.com>
Message-ID: <1159528701.452224.241200@m73g2000cwd.googlegroups.com>


Kirt wrote:
> i dont wanna parse the xml file..
>
> Just open the file as:
>
> f=open('test.xml','a')
>
> and append a line "<Body2>abc</Body2>" before  tag </Top>

Use a regex to split the contents and insert new stuff, eg

import re
prog = prog = re.compile('^(.*)(</Top>)', re.DOTALL)
m = prog.search(f.read())

then m.group(1) is everything before </Top> and m.group(2) is </Top>.
Put them together with your new tag and write it back to the file



From lutz at rmi.net  Fri Sep 29 14:25:34 2006
From: lutz at rmi.net (Mark Lutz)
Date: 29 Sep 2006 11:25:34 -0700
Subject: Mark Lutz Python interview
Message-ID: <1159554334.170062.182720@i3g2000cwc.googlegroups.com>

Python author and trainer Mark Lutz will be interviewed
on the radio show Tech Talk this Sunday, October 1st,
at 6PM Eastern time.  He'll be answering questions about
Python, his books, and his Python training services.

For more details about the show, see Tech Talk's website
at http://techtalk.imi-us.com.  You can also listen to
the live webcast of the show on KFNX's website,
http://www.1100kfnx.com.

--Python Training Services 
  http://home.earthlink.net/~python-training



From paul at boddie.org.uk  Tue Sep 12 12:21:16 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 12 Sep 2006 09:21:16 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.333.1158060193.5279.python-list@python.org>
Message-ID: <1158078076.198865.6690@e63g2000cwd.googlegroups.com>

Fredrik Lundh wrote:
> Steve Holden wrote:
>
> > Sure. But if you go back to the start of the thread you'll remember the
> > OP was originally complaining that SQLite was being promoted in the
> > Python docs as SQL compliant. It clearly isn't if its response to the
> > insertion of a data value that conflicts with the declared column type
> > is to store a value whose type is something else.
>
> the standard actually says "If the value of any input parameter provided
> by the SQL-agent falls outside the set of allowed values of the data
> type of the parameter /.../ the effect is implementation-defined" so
> that's perfectly SQL92 compliant.

To be fair, that text originates in section 12.3, referring to input
parameters to procedures. Meanwhile, the following text (subclause
13.8, "<insert statement>") appears to be more pertinent:

"If the data type of the target identified by the i-th <column name> is
an exact numeric type, then the data type of the i-th item of the
<insert statement> shall be an exact numeric type."

I have used SQLite (releases 2 and 3) to my satisfaction, aware of the
"common knowledge" around the limitations (or features) of SQLite with
respect to data types. I'd agree with the complainant that the
behaviour of SQLite isn't what one would expect, although I started my
relational database experience using an Oracle database system and
admit that I may have been spoilt, thus saving Mr Holden - a
self-confessed Yorkshireman, I believe - the effort involved in
pointing out the relative luxury of my professional upbringing. ;-)

Paul



From MonkeeSage at gmail.com  Wed Sep 20 02:23:56 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 19 Sep 2006 23:23:56 -0700
Subject: include statement
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
Message-ID: <1158733436.676267.296550@k70g2000cwa.googlegroups.com>

joakim.hove at gmail.com wrote:
> Hello,
>
> is it possible in python to include another python source file into the
> current namespace, i.e.completely analogous to the #include statement
> in C.
>
> Regards Joakim

from blah import * # where blah is a blah.py file in sys.path

Also see:

http://pyref.infogami.com/import
http://effbot.org/zone/import-confusion.htm
http://docs.python.org/tut/node8.html

Regards,
Jordan



From deets at nospam.web.de  Wed Sep 20 04:26:20 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 20 Sep 2006 10:26:20 +0200
Subject: byte count unicode string
In-Reply-To: <1158739949.355384.178660@e3g2000cwe.googlegroups.com>
References: <mailman.315.1158736972.10491.python-list@python.org>
	<1158737974.490027.71860@k70g2000cwa.googlegroups.com>
	<1158739949.355384.178660@e3g2000cwe.googlegroups.com>
Message-ID: <4ncc9cF9pqliU1@uni-berlin.de>

MonkeeSage schrieb:
> John Machin wrote:
>> The answer is, "You can't", and the rationale would have to be that
>> nobody thought of a use case for counting the length of the UTF-8  form
>> but not creating the UTF-8 form. What is your use case?
> 
> Playing DA here, what if you need to send the byte-count on a server
> via a header, but need the utf8 representation for the actual data?

So what - you need it in the end, don't you?

The runtime complexity of the calculation will be the same - you have to 
consider each character, so its O(n).

Of course you will roughly double the memory consumption - the original 
unicode being represented as UCS2 or UCS4.

But then - if that really is a problem, how would you work with that 
string anyway?

So you have to resort to slicing and computing the size of the parts, 
which will remedy that easily.

Diez


From __peter__ at web.de  Fri Sep 15 05:56:51 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 15 Sep 2006 11:56:51 +0200
Subject: add without carry
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
Message-ID: <eedtao$2aa$01$1@news.t-online.com>

Hugh wrote:

> Sorry, here's an example...
> 
> 5+7=12
> 
> added without carrying, 5+7=2
> 
> i.e the result is always less than 10
> 
> I've been thinking some more about this and my brain is starting to
> work something out... I just wondered if there was a function in python
> math to do this automatically...

>>> (5 + 7) % 10
2

In this context '%' is called 'modulo operator'. What John and Marc
suggested is basically the same operation for the special case of binary
numbers, i. e.

a % b == a & (b-1)

if a >= 0 and b == 2**N.

Peter


From tuomas.vesterinen at pp.inet.fi  Wed Sep 20 20:22:15 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Thu, 21 Sep 2006 00:22:15 GMT
Subject: "list index out of range" error
In-Reply-To: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
Message-ID: <XWkQg.345$yu2.285@read3.inet.fi>

sam wrote:

I gues: no_lines=len(list_initial)

> for j in range(0, no_lines):

   range returns 0, 1, 2, ..., no_lines-1

> 
>     k = 0
>     while k < no_lines:
>         sorted_check = 0
>         if list_initial[k] < list_initial[k+1]:

When j gets its last value (no_lines-1) k has the same value and k+1 
owerflows the list index range.

Try

   for j in range(1, no_lines):
       ...
           if list_initial[k-1] < list_initial[k]:
       ...

Tuomas

>             temp_str = list_initial[k]
>         elif list_initial[k] == list_initial[k+1]:
>             temp_str = list_initial[k]
>         elif list_initial[k] > list_initial[k+1]:
>             temp_str = list_initial[k+1]
>             sorted_check = 1
>         k += 1
> 
>     list_initial.remove(temp_str)
>     list_final.append(temp_str)
>     no_lines -= 1
> 
>     if sorted_check == 0:
>         break
...


From sherm at Sherm-Pendleys-Computer.local  Wed Sep 27 12:01:09 2006
From: sherm at Sherm-Pendleys-Computer.local (Sherm Pendley)
Date: Wed, 27 Sep 2006 12:01:09 -0400
Subject: Computer Language Popularity Trend
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159349867.827187.270390@h48g2000cwc.googlegroups.com>
Message-ID: <m2lko5wb7e.fsf@Sherm-Pendleys-Computer.local>

"mark.hoemmen at gmail.com" <mark.hoemmen at gmail.com> writes:

> Xah Lee wrote:
>> Computer Language Popularity Trend
>>
>
> Careful there with the sweeping generalizations and quick judgments

Such things are all Xah does. Look at the distribution list for this
message - of what possible use is cross-posting something like this to
five different language groups, unless you're trying to start a cross-
group argument?

In short - Please don't feed the trolls.

sherm--

-- 
Web Hosting by West Virginians, for West Virginians: http://wv-www.net
Cocoa programming in Perl: http://camelbones.sourceforge.net


From fredrik at pythonware.com  Wed Sep 27 00:57:48 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 06:57:48 +0200
Subject: What's up with site.Quitter?
In-Reply-To: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
Message-ID: <efd0cc$ck$1@sea.gmane.org>

James Stroud wrote:

> It seems I can find a reference to just about every type except those 
> for "exit" and "quit" in the standard library somewhere. E.g.:
> 
> py> type(__builtins__.Ellipsis) is types.EllipsisType
> True
> 
> However, in an appearant break with consistency, this can not be done 
> for "exit" and "quit" because site.Quitter is nested inside of the 
> setquit() function in the site.py module.

consistency with what?

the exact implementation of "quit" and "exit" is implementation and 
version dependent; if you need the type, use type(quit) and type(exit), 
respectively.

</F>



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 16:27:01 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 22:27:01 +0200
Subject: no-installation version of python
References: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
Message-ID: <4niv8hFan2s7U1@individual.net>

mr.porteiro.head at gmail.com wrote:

> Is there a stand-alone version of python out there that I can
> package with my scripts so that I don't have to bother with
> something like py2exe?

Isn't this the exact intention of py2exe?

Regards,


Bj?rn

-- 
BOFH excuse #247:

Due to Federal Budget problems we have been forced to cut back on
the number of users able to access the system at one time. (namely
none allowed....)



From matianyi at legendapl.com.cn  Tue Sep 19 23:40:17 2006
From: matianyi at legendapl.com.cn (MaTianyi)
Date: Wed, 20 Sep 2006 12:40:17 +0900
Subject: how to control file output encoding?
Message-ID: <4510B821.4020905@legendapl.com.cn>

the encoding of  file that is output by the file.write() function  is 
always None.
and the encoding attribute of the File Object is readonly.

f = open('abc.txt','w')
print f.encoding
 >>> None

how can I change the file output encoding?




From acorrada at physics.umass.edu  Sat Sep  9 08:25:57 2006
From: acorrada at physics.umass.edu (Andres Corrada-Emmanuel)
Date: Sat, 09 Sep 2006 08:25:57 -0400
Subject: PIL cannot open TIFF image in Windows
Message-ID: <1157804757.4502b2d5f16f6@mail-www.oit.umass.edu>

Hello,

I have installed PIL 1.1.5 on Windows with Python 2.4. I'm unable to open .tiff
images that I can open and view using Windows Explorer. In other words, this
simple test fails:

import Image
im = Image.open('small.tif')

with an 'cannot identify image file' error message. I'm able to open .jpg
images. Is PIL's support for TIFF images dependent on something else in Windows?

--------------------------------------
Andres Corrada-Emmanuel
Lecturer in Physics/Physics Department
Research Fellow/Computer Science Department
University of Massachusetts at Amherst
--------------------------------------


From MonkeeSage at gmail.com  Mon Sep 25 17:03:28 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 25 Sep 2006 14:03:28 -0700
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<WVWRg.4782$Go3.723@dukeread05> <f0XRg.4783$Go3.4404@dukeread05>
Message-ID: <1159217673.536593.210310@d34g2000cwd.googlegroups.com>

hg wrote:
> But today ? what is the cost of replacing %w("blah blah") by
> Hi_I_Want_To_Split_The_String_That_Follows( "blah blah")

How about r'blah', u'blah', """blah""", and '''blah'''. :)

Regards,
Jordan



From hostilio at teledata.mz  Wed Sep 27 04:16:13 2006
From: hostilio at teledata.mz (=?ISO-8859-1?Q?Host=EDlio_Thumbo?=)
Date: Wed, 27 Sep 2006 10:16:13 +0200
Subject: Status of Router on webpage
Message-ID: <451A334D.7040009@teledata.mz>

Hi,

Anyone can help me to create this small system.
I have more than 50 Cisco Routers on my network, and I am trying to 
display the status of them on a webpage.
I want to display the status of the router on the following link 
http://www.xxxxx.com/test.html

1. When the serial is "up", "with line protocol up"does not display 
anything on webpage.

2. When the serial is "up" with "line protocol down", must display on 
webpage:

______________________________________________________________________________
ipofrouter (nameofrouter)
--------------------------------------------------------------------------------------------------------
Serial xxxxx is up, line protocol is down   |    
descriptionoftherouter   |   Failed:  timeoffailed  dateoffailed
______________________________________________________________________________

eg.
_____________________________________________________________________________________
192.168.10.4 (FR-Brazil)
------------------------------------------------------------------------------------------------------------------
Serial 2/4:3 is up, line protocol is down   |   
BRAZIL_ATM_CA158587894_128k  |   Failed: 06:30 2006-09-08
_____________________________________________________________________________________

3. When the serial is "up" with "line protocol down -looped-", must 
display on webpage:

______________________________________________________________________________________
ipofrouter (nameofrouter)
------------------------------------------------------------------------------------------------------------------
Serial xxxxx is up, line protocol is down  -looped-   |    
descriptionoftherouter   |   Failed:  timeoffailed  dateoffailed
______________________________________________________________________________________


4. When the serial is  "down" with "line protocol down",must display on 
webpage:

_________________________________________________________________________________
ipofrouter (nameofrouter)
------------------------------------------------------------------------------------------------------------
Serial xxxxx is down, line protocol is down    |    
descriptionoftherouter   |   Failed:  timeoffailed  dateoffailed
_________________________________________________________________________________



Regards.
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From rdm at rcblue.com  Thu Sep 14 09:51:47 2006
From: rdm at rcblue.com (Dick Moores)
Date: Thu, 14 Sep 2006 06:51:47 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1158206057.688002.144980@i42g2000cwa.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.2.20060914064333.066cc5d8@rcblue.com>

At 08:54 PM 9/13/2006, Jay wrote:
>I, too, am a hardcore fan of jEdit.  It's nice to finally see some user
>support on this forum.  :-)

I'm trying out jEdit and UliPad. I got UliPad going right away and 
I'm very pleased with it, but could I jump in here with a basic jEdit 
question? How do you run a script?

And one more. On the menus, the font is clear and large, but the 
equivalent key combinations are written so small they are very 
difficult for me to read. Is there a way to configure them to be 
slightly larger? (I'd ask on the jEdit support forum, but it doesn't 
seem to be very active.)

Thanks,

Dick Moores






From gagsl-py at yahoo.com.ar  Wed Sep 13 04:03:19 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 13 Sep 2006 05:03:19 -0300
Subject: How to compare to directories?
In-Reply-To: <1158127776.413699.170750@e63g2000cwd.googlegroups.com>
References: <1158127776.413699.170750@e63g2000cwd.googlegroups.com>
Message-ID: <7.0.1.0.0.20060913050243.037422b8@yahoo.com.ar>

At Wednesday 13/9/2006 03:09, could.net at gmail.com wrote:

>I want to compare 2 directories: dir1 and dir2.
>What I want to do is to get these informations:
>1. does they have the same number of files and sub-directories?
>2. does each file with the same name have the same size and date
>information?

Look at filecmp.dircmp in the standard library


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From simon at brunningonline.net  Tue Sep 19 07:46:34 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 19 Sep 2006 12:46:34 +0100
Subject: why a main() function?
In-Reply-To: <4na377F9esroU1@uni-berlin.de>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<4na377F9esroU1@uni-berlin.de>
Message-ID: <8c7f10c60609190446q3d5f8331ra64c6fee991305@mail.gmail.com>

On 9/19/06, Diez B. Roggisch <deets at nospam.web.de> wrote:

> I totally fail to see why that should be the case - for python as well as
> for C.

If you put your code into a main() function, all the names that it
binds are in the function's local scope, whereas if the code is in the
module's top level, the names are bound to the module's global scope.
Access to locals is somewhat faster than access to globals.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From antroy at gmail.com  Fri Sep 29 16:32:52 2006
From: antroy at gmail.com (Ant)
Date: 29 Sep 2006 13:32:52 -0700
Subject: storing variable names in a list before they are used?
In-Reply-To: <hQeTg.57$1n3.320@news.tufts.edu>
References: <hQeTg.57$1n3.320@news.tufts.edu>
Message-ID: <1159561972.745106.296930@c28g2000cwb.googlegroups.com>


John Salerno wrote:
> If I want to have a list like this:
>
> [(first_name, 'First Name:'), (last_name, 'Last Name:').....]
>
> where the first part of each tuple is a variable name and the second
...
> can't leave them as above, but if I put them in as a string, then how do
> I later "transform" them into an actual variable for assign, such as:
>
> first_name = widget.get_text()

A better way of doing it may be to use a dictionary thus:

name_map = {"First Name": None, "Last Name": None}

and then assign the value:

name_map["First Name"] = widget.get_text()

Or alternatively if you were adamant you wanted your original format:

firstname = [None]
lastname = [None]

 [(firstname, 'First Name:'), (lastname, 'Last Name:')]

firstname[0] = widget.get_text()

But that's a bit of a hack.

The problem you are having here is a conceptual one: When you put a
variable name in a list or tuple, it isn't the *name* that's stored but
the actual value. I would think about using the dictionary version
above, or if things are getting more complicated, then create a class
to produce objects that contain the structure you want:

class FormField(object):
    def __init__(self, name, text=None):
        self.name = name
        self.text = text

firstname = FormField("First Name", "Default Text")
lastname = FormField("Last Name")

fields = [firstname, lastname]

lastname.text = widget.get_text()

The same of course could be accompished using pairs or dictionaries
(e.g. firstname = {"name": "First Name", "text": "Default Text"};
lastname = {"name": "Last Name"} ), but I think that the class based
version self documents itself a bit better.



From cliff at develix.com  Thu Sep 14 01:48:09 2006
From: cliff at develix.com (Cliff Wells)
Date: Wed, 13 Sep 2006 22:48:09 -0700
Subject: Are Python's reserved words reserved in places they dont need
	to   be?
In-Reply-To: <ee8fio$a4g$1@sea.gmane.org>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>
	<7x4pvckyyu.fsf@ruckus.brouhaha.com>
	<slrnegff4k.f0c.apardon@rcpc42.vub.ac.be> <ee8fio$a4g$1@sea.gmane.org>
Message-ID: <1158212889.3622.94.camel@devilbox>

On Wed, 2006-09-13 at 10:30 +0200, Fredrik Lundh wrote:
> Antoon Pardon wrote:
> 
> > One place where I would use such a feature is in a unittest
> > package.  I think being able to write self.assert or self.raise
> > looks better than having to append an underscore.
> 
> patch here:
> 
> http://mail.python.org/pipermail/python-list/2001-June/047996.html


Did you happen to remember this post or is Google *really* your friend?


Cliff



From __peter__ at web.de  Fri Sep 29 09:15:03 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 29 Sep 2006 15:15:03 +0200
Subject: Execute external code and get return value
References: <ze8Tg.128326$_J1.881759@twister2.libero.it>
	<CH8Tg.128090$zy5.1783784@twister1.libero.it>
Message-ID: <efj65h$2fk$01$2@news.t-online.com>

Michele Petrazzo wrote:

> Following this link, here is my solution:
> 
> 
> code = """
> def funct2Call():
>   return "It work!"
> 
> object.method(funct2Call)
> """
> 
> class Object(object):
>      def method(self, value):
>          self._callable = value
>      def __call__(self):
>          return self._callable()
> 
> # populate the namespace
> namespace = {
>      "object": Object()
>      }
> 
> # execute the code
> exec code in namespace
> 
> namespace["object"]()

Just in case you didn't see it -- the following will work as well:

code = """
def funct2Call():
  return "It work!"
"""

namespace = {}
exec code in namespace
namespace["funct2Call"]()

Peter



From fredrik at pythonware.com  Tue Sep 26 02:14:04 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 08:14:04 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efag5q$ih5$1@sea.gmane.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>
	<efag5q$ih5$1@sea.gmane.org>
Message-ID: <efagfc$ih5$2@sea.gmane.org>

Fredrik Lundh wrote:

> the OP didn't ask for a field name => value mapping, though.

footnote: but for those who want that, I strongly recommend using 
something like Greg Stein's dtuple module:

     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81252
     http://www.lyra.org/greg/python/dtuple.py

</F>



From skip at pobox.com  Sun Sep 10 10:17:38 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sun, 10 Sep 2006 09:17:38 -0500
Subject: pyExcelerator question - dates map to floats?
In-Reply-To: <1157863929.201427.317320@m73g2000cwd.googlegroups.com>
References: <17667.36008.986704.400318@montanaro.dyndns.org>
	<mailman.225.1157861240.5279.python-list@python.org>
	<1157863929.201427.317320@m73g2000cwd.googlegroups.com>
Message-ID: <17668.7810.333053.294116@montanaro.dyndns.org>


    John> Check out my "xlrd" package.
    John> http://cheeseshop.python.org/pypi/xlrd/0.5.2

Very nice.  Thanks for the pointer.  I threw away about 75% of the
xls-to-csv converter I wrote using pyExcelerator.  And it worked with Python
2.3 without having to comment out all the decorators.

Skip


From http  Thu Sep  7 21:36:32 2006
From: http (Paul Rubin)
Date: 07 Sep 2006 18:36:32 -0700
Subject: Secure Postgres access
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
	<pan.2006.09.08.01.11.22.368386@umn.edu>
Message-ID: <7xvenzt9zz.fsf@ruckus.brouhaha.com>

Reid Priedhorsky <reid at umn.edu> writes:
> > Wouldn't they need a database password?
> 
> Well, right now, no. I have Postgres configured to trust the OS on who is
> who. 

You trust the OS on the client machine, but not the client machine's
users?  Does it run identd?  Maybe you could use that.  I'd consider
this shaky for any real security application, but it might be better
than nothing depending on what you're doing.

> I would prefer not to change that because I don't want another place
> containing authentication information. I'd like to connect by entering
> only my SSH password, not my SSH password and a database password too.

How about if you hack your local SSH client so its port forwarding
only accepts connections originated by your account, again using
identd to check.  Your application could also open a second connection
to the hacked client, using an AF_UNIX socket, which in linux supports
a sendmsg command that sends the other side's user id (see the
SCM_CREDENTIALS message in unix(7)).  You'd use SCM_CREDENTIALS to
authenticate the user ID, then send the Postgres client's originating
TCP port number over the Unix socket, and that would tell the SSH
client that it could then start forwarding the TCP packets.  Yucch,
this is messy.  Maybe something like it exists already somewhere.

> I control the database machine, and the only user is me. I don't control
> the local machine, and it has many users I don't trust.

Sooner or later they will take over your account and capture your ssh
and login passwords, and then there will be no way at all for any
program to distinguish between them and you.  Your best bet is to run
on a client machine that you trust.


From deets at nospam.web.de  Tue Sep 19 10:38:02 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 16:38:02 +0200
Subject: Installing 2.5 with 2.4?
References: <U0TPg.1$1n3.143@news.tufts.edu>
Message-ID: <4nadmaF9c3hpU1@uni-berlin.de>

John Salerno wrote:

> Hi all. Just curious, before I do it myself, about the best way to
> install 2.5 if it's the only version I want to use. Should I uninstall
> 2.4 first? Does 2.5 replace 2.4? I doubt the latter, but if I install
> 2.5, does that mean I need to reinstall all the extensions I had for 2.4
> again, or does 2.5 detect them somehow?

Without an OS given, difficult answer. Generally, you can assume that there
is no need to ditch one version because you use another, they don't
interfer with each other. Only which one is perceived as "current" might
change and alter some behavior.

However, you have to install all extensions again, that is for sure. And
most probably some of them won't work so far, as they might need some
modification or at least time to make them available as binary.

Diez


From ilias at lazaridis.com  Sun Sep  3 12:06:21 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 3 Sep 2006 09:06:21 -0700
Subject: CONSTRUCT -
In-Reply-To: <ede27d$pi9$1@news.albasani.net>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<ede27d$pi9$1@news.albasani.net>
Message-ID: <1157299581.865287.225320@p79g2000cwp.googlegroups.com>

Georg Brandl wrote:
> lazaridis_com wrote:
> > I would like to fulfill the following task:
> >
> > The construct:
> >
> > if __name__ == '__main__':
> >
> > should be changed to something like:
> >
> > if identifier.name == '__main__':
> >
> > The term "identifier" should be selected based on the meaning of the
> > __double-underscore-enclosure__ of the entities.
...

> import sys
> class _identifier:
>     def __getattr__(self, name):
>         return sys._getframe(1).f_globals['__%s__' % name]
> identifier = _identifier()

ok, I understand.

this one would work with modules.

but how would look a more general solution, which would work with
objects too?
 
.

--
http://lazaridis.com



From vedran_dekovic at yahoo.com  Fri Sep  1 09:57:58 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 1 Sep 2006 06:57:58 -0700
Subject: Tkinter listbox and ftputil
Message-ID: <1157119078.055806.7750@h48g2000cwc.googlegroups.com>

Hi,
Again I need help about tkinter listbox.


example:

In listbox must write (imaginary file in server):

['-rw-r--r--   1 vedran at vedran.byethost12.com vedran.byethost12.com
3506 Jun 25 14:40 file.gif']


....and then when somebody click on file in listbox,then in new Entry
widget must
write just filename        example:   'file.gif'  , not other file
informations






           THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



From bearophileHUGS at lycos.com  Wed Sep 13 20:10:00 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 13 Sep 2006 17:10:00 -0700
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <1158191996.978695.64400@i42g2000cwa.googlegroups.com>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
	<1158190265.017412.203500@h48g2000cwc.googlegroups.com>
	<1158190495.438869.222500@h48g2000cwc.googlegroups.com>
	<1158191996.978695.64400@i42g2000cwa.googlegroups.com>
Message-ID: <1158192600.168754.227210@m73g2000cwd.googlegroups.com>

Fuzzyman:
> Can you delete values from a dictionary whilst iterating over its items ?

Try the code, it works. I am not iterating on the dict, I am not using
dict.iteritems(), that produces a lazy iterable, I am using
dict.items() that produces a list of (key,value) pairs. And I am not
removing elements from that list :-)

Hugs,
bearophile



From kent at kentsjohnson.com  Fri Sep 29 08:44:31 2006
From: kent at kentsjohnson.com (Kent Johnson)
Date: Fri, 29 Sep 2006 12:44:31 GMT
Subject: windev vs python SOS
In-Reply-To: <1159528038.548533.304250@c28g2000cwb.googlegroups.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159528038.548533.304250@c28g2000cwb.googlegroups.com>
Message-ID: <Py8Tg.2591$5i7.981@newsreading01.news.tds.net>

aaaWindev at gmail.com wrote:
> Hi St?phane,
> 
> st?phane bard wrote:
>> hello, my boss ask me to prefer windev to python.
>> I have to argue
> 
> First, no matter how good is Python, you should not desagree with your
> boss.
> Second, Windew is quite good and fun, you will love it.

Yes, the boss is always right, shut up and drink your Kool-Aid!

;)


From siona at chiark.greenend.org.uk  Tue Sep 26 07:16:03 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 26 Sep 2006 12:16:03 +0100 (BST)
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
Message-ID: <R0z*8lKrr@news.chiark.greenend.org.uk>

Jon Ribbens  <jon+usenet at unequivocal.co.uk> wrote:
>In article <Xns98499CF9DCEE4duncanbooth at 127.0.0.1>, Duncan Booth wrote:
>> I guess you've never seen anyone write tests which retrieve some generated 
>> html and compare it against the expected value. If the page contains any 
>> unescaped quotes then this change would break it.
>You're right - I've never seen anyone do such a thing. It sounds like
>a highly dubious and very fragile sort of test to me, of very limited
>use.

So what sort of test would you use, that doesn't involve comparing
actual output against expected output?

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From jisis at notmal.com  Sat Sep  9 13:26:49 2006
From: jisis at notmal.com (jason)
Date: Sat, 09 Sep 2006 19:26:49 +0200
Subject: newbie: datastructure `dictionary' question
References: <pan.2006.09.09.15.15.13.48103@notmal.com>
	<1157817635.260327.50030@d34g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.09.17.26.44.377306@notmal.com>

On Sat, 09 Sep 2006 09:00:35 -0700, John Machin wrote:
 
> jason wrote:
>> Hello,
>>
>> I am completely new to python and I have question that I unfortunately
>> could not find in the various documentation online. My best guess is
>> that the answer should be quitte easy but I have just enterd the
>> learning phase so that means a hightend chance for stupidity and
>> mistakes on my part.
>>

<cut>
...
</cut>

Owww.. Of course... ! Thankx for the answer and the suggestion. It really
helped me a lot. I defintely going to take the OO approach later on. 

thankx again for the quick reply.

Jason.

> You are *assigning* records = blahblah each time around. "records" will
> end up being bound to the blahblah related to the *last* record that you
> read.
> 
> You can do it item by item:
>     records[folder]['date'] = datum
>     etc
> or as a oneliner:
>     records[folder] = {'date' : datum, 'mesgbytes' :
> extrmsize(str[8:]), 'mesgcount' : 1}
> 
> When you find yourself using a dictionary with constant keys like
> 'date', it's time to start thinking OO.
> 
> class LogMessage(object):
>    def __init__(self, date, .....)
>         self.date = date
>         etc
> 
> then later:
> 
> records[folder] = LogMessage(
>                               date=datum,
>                               mesgbytes= extrmsize(str[8:]),
>                               mesgcount=1,
>                               )
> 
> 
> [snip]
> 
> HTH,
> John



From DustanGroups at gmail.com  Sat Sep 23 18:10:10 2006
From: DustanGroups at gmail.com (Dustan)
Date: 23 Sep 2006 15:10:10 -0700
Subject: webbrowser module's Firefox support
Message-ID: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>

At http://docs.python.org/whatsnew/modules.html on the webbrowser
module, it says "A number of additional browsers were added to the
supported list such as Firefox, Opera, Konqueror, and elinks."

I just installed python 2.5, looking forward to being able to control
firefox without having to make it my default browser, but...

I don't seem to have that functionality. In IDLE:

>>> import webbrowser
>>> webbrowser._browsers
{'windows-default': [<class 'webbrowser.WindowsDefault'>, None]}

So I tried to track down what the problem might be, seeing as I also
have Netscape installed on my system (Windows XP), and it's not showing
up either. I found where the code appears to test that the system has
firefox installed, and found it calls _iscommand; here's what I get
running similar code:

>>> import os
>>> path = os.environ.get("PATH")
>>> for d in path.split(os.pathsep):
	print d

C:\Perl\bin\
C:\WINDOWS\system32
C:\WINDOWS
C:\WINDOWS\System32\Wbem
c:\Python22
C:\Program Files\PC-Doctor for Windows\services
C:\Program Files\Hummingbird\Connectivity\7.10\Accessories\
C:\PROGRA~1\CA\SHARED~1\SCANEN~1
C:\PROGRA~1\CA\ETRUST~1

The path for firefox is "C:\Program Files\Mozilla Firefox\firefox.exe".



Ok, now I'm at a roadblock; I have no idea where to go from here.

I did do a search here, but came up empty-handed. Can anyone tell me
how to get the webbrowser module to recognize firefox's existence,
given this information?



From ilias at lazaridis.com  Wed Sep  6 07:36:56 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 6 Sep 2006 04:36:56 -0700
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <1157519282.433333.323080@m73g2000cwd.googlegroups.com>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
	<1157129694.958006.40250@i3g2000cwc.googlegroups.com>
	<44fc4ebe$0$27243$636a55ce@news.free.fr>
	<1157463143.871754.119180@d34g2000cwd.googlegroups.com>
	<1157519282.433333.323080@m73g2000cwd.googlegroups.com>
Message-ID: <1157542616.349804.18650@i3g2000cwc.googlegroups.com>

alex23 wrote:
> lazaridis_com wrote:
> > The "persist case" evaluates python persistency systems (or
> > mechanisms), and will show my personal preference:
>
> Do you feel that evaluating-for-evaluation's-sake produces a more
> measured understanding of the value of a product than that taken from
> its use in, say, actual development?

I don't evaluate for "evaluating-for-evaluation's-sake", see the home
page of the project:

"The project selects Open Source Subsystems for integration into a
Coherent Software Production System. "
http://case.lazaridis.com/wiki

.



From ldo at geek-central.gen.new_zealand  Thu Sep 28 19:54:53 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 11:54:53 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
	<Xns984B793317A15duncanbooth@127.0.0.1>
	<efdnqd$adv$1@lust.ihug.co.nz>
	<Xns984B8482155F6duncanbooth@127.0.0.1>
	<efeqpd$8vh$1@lust.ihug.co.nz>
Message-ID: <efhnai$fia$3@lust.ihug.co.nz>

In message <efeqpd$8vh$1 at lust.ihug.co.nz>, LI wrote:

>>>> execfile("QuoteSQL.py")
>>>> EscapeSQLWild(r"\%")
> '\\\\%'
>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%")
> '"%\\\\\\\\%%"'
>>>> EscapeSQLWild(r"\%") == r"\\%"
> True
>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%") == r'"%\\\\%%"'
> True

With the correction to EscapeSQLWild, this becomes:

>>> execfile("QuoteSQL.py")
>>> EscapeSQLWild(r"\%")
'\\\\\\%'
>>> SQLString("%" + EscapeSQLWild(r"\%") + "%")
'"%\\\\\\\\\\\\%%"'
>>> EscapeSQLWild(r"\%") == r"\\\%"
True
>>> SQLString("%" + EscapeSQLWild(r"\%") + "%") == r'"%\\\\\\%%"'
True



From willie at jamots.com  Wed Sep 20 06:49:24 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 05:49:24 -0500
Subject: byte count unicode string
Message-ID: <45111CB4.7010507@jamots.com>

John Machin:

 >Good luck!


Thank you for your patience and for educating me.
(Though I still have a long way to go before enlightenment)
I thought Python might have a small weakness in
lacking an efficient way to get the number of bytes
in a "UTF-8 encoded Python string object" (proper?),
but I've been disabused of that notion.
It's always a nice feeling when my language of choice
withstands my nitpicking.


From polychrom at softhome.net  Sat Sep 23 18:13:12 2006
From: polychrom at softhome.net (mistral)
Date: 23 Sep 2006 15:13:12 -0700
Subject: Need compile python code
In-Reply-To: <1159042393.683184.111680@h48g2000cwc.googlegroups.com>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
	<1159039498.616908.88550@d34g2000cwd.googlegroups.com>
	<1159042393.683184.111680@h48g2000cwc.googlegroups.com>
Message-ID: <1159049592.717174.10280@d34g2000cwd.googlegroups.com>


MonkeeSage ?????(?):

> mistral wrote:
> > No, something is wrong there. what I need is just compile one python
> > file which will generate html page, with parameters:
> > "exec" "python" "-O" "$0" "$@"
> >
> >  just need simple way do this(script is correct), i will not set any
> > patches anywhere, can i do this wrom normal GUI?
>
> Hmmm... Are you talking about _RUNNING_ python scripts? Is that what
> you mean by "compile" -- you mean execute? Is that what this broken
> shell script means?
>
> "exec" "python" "-O" "$0" "$@"
>
> You don't need exec, the double quote on every word breaks it, and
> passing $0 (which is the shell script itself) to python is sure to
> break. Try this:
>
> #!/bin/sh
> python -O "$@"
>
> Then:
>
> $ run_python.sh file.py arg1 arg2 arg3
>
> Regards,
> Jordan
-------
the html page just encoded within that py script. To get it, i need run
this python file.
Since i can no work with this command line, i tried via Python IDE
interface: I run this IDE, select File > Run > specify file name, in
'Parameters' box type parameters:

exec python -O $0 $@

and run. I got some file in output - unknown file type, then I renamed
it and got something look like a page i need. Dont know is this right
way or not, but it provided some result.. (unlike useless command line
interface)
All this extremelly inconvenient however. This ActivePython wrote in my
Registry 243 registry entries..

mistral



From sjmachin at lexicon.net  Tue Sep 26 17:46:34 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 14:46:34 -0700
Subject: where are isinstance types documented?
In-Reply-To: <efbsv3$nd3$1@news.albasani.net>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
	<mailman.661.1159266060.10491.python-list@python.org>
	<wXk*2kLrr@news.chiark.greenend.org.uk>
	<mailman.711.1159287948.10491.python-list@python.org>
	<efbsv3$nd3$1@news.albasani.net>
Message-ID: <1159307194.216452.209530@i3g2000cwc.googlegroups.com>


Georg Brandl wrote:
> Fredrik Lundh wrote:
> > Sion Arrowsmith wrote:
> >>
> >
> >>> based on http://docs.python.org/ref/types.html, here's a list of the
> >>> most commonly used core types:
> >>> [ ... ]
> >>> Sequences:
> >>>     str
> >>>     unicode
> >>>     tuple
> >>>     list
> >>
> >> And set, presumably.
> >
> > absolutely!
> >
> > however, sets don't seem to be mentioned on that page at all (and if
> > they were, they should be under mappings, right?).  any documentation
> > hackers out there ?
>
> Filed a doc bug (#1565919). Should be a piece of cake for someone more
> versed in the English language than me ;)

and frozenset, presumably.



From ptmcg at austin.rr._bogus_.com  Fri Sep 22 12:03:06 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 22 Sep 2006 16:03:06 GMT
Subject: XML parser that sorts elements?
References: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>
Message-ID: <_OTQg.4326$nX4.2493@tornado.texas.rr.com>

<jmike at alum.mit.edu> wrote in message 
news:1158939240.213404.239690 at m73g2000cwd.googlegroups.com...
> Hi everyone,
>
> I am a total newbie to XML parsing.  I've written a couple of toy
> examples under the instruction of tutorials available on the web.
>
> The problem I want to solve is this.  I have an XML snippet (in a
> string) that looks like this:
>
> <booga foo="1" bar="2">
>  <well>hello</well>
>  <blah>goodbye</blah>
> </booga>
>
> and I want to alphabetize not only the attributes of an element, but I
> also want to alphabetize the elements in the same scope:
>
> <booga bar="2" foo="1">
>  <blah>goodbye</blah>
>  <well>hello</well>
> </booga>
>
> I've found a "Canonizer" class, that subclasses saxlib.HandlerBase, and
> played around with it and vaguely understand what it's doing.  But what
> I get out of it is
>
> <booga bar="2" foo="1">
>  <well>hello</well>
>  <blah>goodbye</blah>
> </booga>
>
> in other words it sorts the attributes of each element, but doesn't
> touch the order of the elements.
>
> How can I sort the elements?  I think I want to subclass the parser, to
> present the elements to the content handler in different order, but I
> couldn't immediately find any examples of the parser being subclassed.
>

I suspect that Canonizer doesn't sort nested elements because some schemas 
require elements to be in a particular order, and not necessarily an 
alphabetical one.

Here is a snippet from an interactive Python session, working with the 
"batteries included" xml.dom.minidom.  The solution is not necessarily in 
the parser, it may be instead in what you do with the parsed document 
object.

This is not a solution to your actual problem, but I hope it gives you 
enough to work with to find your own solution.

HTH,
-- Paul


>>> xmlsrc = """<booga foo="1" bar="2">
...   <well>hello</well>
...   <blah>goodbye</blah>
... </booga>
... """
>>> import xml.dom.minidom
>>> doc = xml.dom.minidom.parseString(xmlsrc)
>>> doc.childNodes
[<DOM Element: booga at 0x9e8508>]
>>> print doc.toprettyxml()
<?xml version="1.0" ?>
<booga bar="2" foo="1">


        <well>
                hello
        </well>


        <blah>
                goodbye
        </blah>


</booga>

>>> [n.nodeName for n in doc.childNodes]
[u'booga']
>>> [n.nodeName for n in doc.childNodes[0].childNodes]
['#text', u'well', '#text', u'blah', '#text']
>>> [n.nodeName for n in doc.childNodes[0].childNodes if n.nodeType == 
>>> doc.ELEMENT_NODE]
[u'well', u'blah']
>>> doc.childNodes[0].childNodes = 
>>> sorted(doc.childNodes[0].childNodes,key=lambda n:n.nodeName)
>>> print doc.toprettyxml()
<?xml version="1.0" ?>
<booga bar="2" foo="1">






        <blah>
                goodbye
        </blah>
        <well>
                hello
        </well>
</booga>

>>> doc.childNodes[0].childNodes = sorted([n for n in 
>>> doc.childNodes[0].childNodes if n.nodeType == 
>>> doc.ELEMENT_NODE],key=lambda n:n.nodeName)
>>> print doc.toprettyxml()
<?xml version="1.0" ?>
<booga bar="2" foo="1">
        <blah>
                goodbye
        </blah>
        <well>
                hello
        </well>
</booga>

>>> 




From skip at pobox.com  Sat Sep  9 12:09:03 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sat, 9 Sep 2006 11:09:03 -0500
Subject: mysqldb + multi-threading
In-Reply-To: <rVqMg.17265$%j7.747@newssvr29.news.prodigy.net>
References: <0piMg.136445$LF4.125458@dukeread05>
	<24kMg.11472$q63.11207@newssvr13.news.prodigy.com>
	<mailman.177.1157747400.5279.python-list@python.org>
	<yKmMg.7783$tU.2787@newssvr21.news.prodigy.com>
	<mailman.199.1157770769.5279.python-list@python.org>
	<rVqMg.17265$%j7.747@newssvr29.news.prodigy.net>
Message-ID: <17666.59167.466470.17273@montanaro.dyndns.org>

>>>>> "Bryan" == Bryan Olson <fakeaddress at nowhere.org> writes:

    Bryan> skip at pobox.com wrote:
    Bryan> Go with your gut. Python threads are reasonably portable, and
    Bryan> work well on modern MS-Windows.
    >> 
    >> >> Maybe ignore your gut and read the documentation. ;-)
    >> 
    Bryan> What in the documentation do you think answers the question?
    >> 
    >> The part where it says that if MySQLdb.threadsafety == 1 it's not safe to
    >> share connections.

    Bryan> You can't share them among processes either, so I don't see
    Bryan> any advantage either way on that.

Sure, but its difficult to do so.  With threads it's trivial to share a
connection and wind up getting bitten in the butt.

Skip


From sybrenUSE at YOURthirdtower.com.imagination  Fri Sep  8 07:41:19 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Fri, 8 Sep 2006 13:41:19 +0200
Subject: Request for tips on my first python script.
References: <mailman.148.1157679775.5279.python-list@python.org>
Message-ID: <slrneg2lmv.6ug.sybrenUSE@schuimige.stuvel.eu>

Lex Hider enlightened us with:
> Any tips on the code quality and use of python would be appreciated.
> I've got a feeling the overall structure is up the creek.

I'll post some remarks about the code ;-)

> HOME = os.path.expanduser("~")

I wouldn't use this. Just use os.environ['HOME']. In most cases it
turns out to be the same directory, but it adds more flexibility. If
someone wants your app to read/write to another directory, he/she can
simply change the HOME environment variable.

> # user configurable
> #maxChecksPerDay = 8
> #maxChecksPerDay = 12
> maxChecksPerDay = 24
> myTemp = '/tmp'
> #podDir = os.path.join(HOME, 'Audio/Podcasts')
> podDir = os.path.join(HOME, 'Podcasts')
> # end user configurable

A bit of nitpicking: place a blank line between the user configurable
part and the rest of the code.

> def exitFunc():
>     #f.close()
>     #log.close()
>     if boz:
>         print boz

Write function comments! Use the docstring to describe your function -
what does it do, and what does it return? Do this for all functions
you write.

> # render is used because feeds use a lot of html, not just plain text.
> def render(html):
>     if html:
>         html = re.sub('"', '\\"', html.encode('utf8'))

Use a raw string for the second argument to make it more readable:

    html = re.sub('"', r'\"', html.encode('utf8'))

>         command = 'echo "' + html + '" | lynx -dump -stdin -force_html'
>         os.system(command)

Use the subprocess module or the popen2 module to open lynx. That way,
you can feed the HTML to lynx directly, and you're not bound to the
maximum line length of the shell. It also removes the need to escape
quotes.

> def updateCache(feeds):
>     l = []

Use longer names than 'l'.

>     print "updating local xml cache..."
>     for feed in file(feeds, "r").read().split('\n'):
>         if not re.match('^http://', feed): # feedList ignores
>                                            # anything but urls

Here you say you only match URLs starting with "http://", but at the
start you claimed to only use URLs starting with "http". Be sure to
keep your documentation and your code in sync.

> def htmlTitle(mainTitle, subTitle):
>     s = '<HR>'
>     s += '<H2>' + mainTitle + '</H2>'
>     s += '<H3>' + subTitle + '</H3>'
>     return s

It might be easier on the eyes if you use:

    s = '<hr><h2>%s</h2><h3>%s</h3>' % (mainTitle, subTitle)

It might also be wise to use lower-case HTML tags to remain compatible
with XHTML.

> def downloadPod(url, dest):
>     kb = 2
>     success = 0
>     command = 'wget --continue -O "' + dest + '" "' + url + '"'
>     status  =  os.system(command)

Here you pass the arguments of the function to a system call. This
means that before the downloadPod function is called, the 'url' and
'dest' should have been escaped or cleared of unwanted characters.
This should really be documented.

Overall, your code needs to be commented and documented much better.
Think of other people reading the code, and explain _why_ you do
something, instead of explaining _what_ you're doing.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From GavinCrooks at gmail.com  Mon Sep 11 12:24:02 2006
From: GavinCrooks at gmail.com (GavinCrooks at gmail.com)
Date: 11 Sep 2006 09:24:02 -0700
Subject: Ann: CoreBio 0.4
References: <1157961570.253884.44940@d34g2000cwd.googlegroups.com>
	<mailman.246.1157974517.5279.python-list@python.org>
Message-ID: <1157991842.081498.147970@i42g2000cwa.googlegroups.com>

km wrote:
> Hi,
> why are u reinventing the wheel when Biopython[1] is already existing ? is
> there any specific reason u wanted to develop this CoreBio ? why dont u just
> extend the existing BioPython package itself ?
> regards,
> KM
> [1]http://biopython.org > <GavinCrooks at gmail.com> wrote:



Biopython is a fine project which I have used and contributed to in the
past. Unfortunately, Biopython suffers form a lack of focus. It is a
huge heap of code, some of which is well written, but of lot of which
is not, and a significant portion doesn't work as advertised. There is
no consistency, the code-base is idiosyncratic, the documentation is
spotty, and it is very hard to actually discover and use the
functionality that you need. For some common tasks there are three ways
of doing things, only one of which is supported.

CoreBio is intended to be a high-quality, easy to use collection of the
core functionality needed for bioinformatics and computational biology.
Compared to biopython, we are taking a narrow, quality first, rather
than breadth first, approach with simple API's that hide as much
complexity as reasonable possible.

As an example of simple API's consider the common task of reading a
file of protein sequences:

>>> from corebio import seq_io
>>> afile = open("human.fa")
>>> list_of_sequences = seq_io.read(afile)

CoreBio will figure out the file format, so 'seq_io.read()' will parse
sequence data from  fasta, clustal, genbank, intelligenetics, msf,
nbrf/pir, nexus or phylip formatted files.



Gavin Crooks



From sybrenUSE at YOURthirdtower.com.imagination  Wed Sep  6 04:44:12 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Wed, 6 Sep 2006 10:44:12 +0200
Subject: [Article] OpenOffice.org and Python
References: <slrnefrv2p.9pc.sybrenUSE@schuimige.stuvel.eu>
	<mn.31bd7d694f278d16.46195@XX.XmclaveauX.com>
Message-ID: <slrneft2is.cqd.sybrenUSE@schuimige.stuvel.eu>

MC enlightened us with:
> Thanks!

You're welcome!

>   - and Python 2.4.x?

I've used Python 2.4.3 to write the article.

>   - I have Python 2.4 and then "embbed Python 2.3 of OOo" ; how
>   install some things in this last Python?  I dream to call Pywin32
>   from OOo...

Please rephrase that question, it doesn't make much sense to me.

>   - when I drive OOo from Python, via COM/Ole-automation, many
>   things not run (getStruct...); no solution?

I don't know, I don't use Windows. You also describe a method that
wasn't used in my article. Perhaps it would be better if you did use
the methods I describe.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From rshepard at appl-ecosys.com  Mon Sep 11 12:42:44 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Mon, 11 Sep 2006 09:42:44 -0700 (PDT)
Subject: Parsing String, Dictionary Lookups, Writing to Database Table
Message-ID: <Pine.LNX.4.64.0609110940100.2563@salmo.appl-ecosys.com>

   I need to learn how to process a byte stream from a form reader where each
pair of bytes has meaning according to lookup dictionaries, then use the
values to build an array of rows inserted into a sqlite3 database table.

   Here's the context: The OMR card reader sends a stream of 69 bytes over
the serial line; the last byte is a carriage return ('\r') indicating the
end of record. Three pairs (in specific positions at the beginning of the
stream) represent blanks (no value); two other pairs represent character
strings; the values are determined from two dictionaries. The remaining 28
pairs represent values from a third dictionary.

   What I'm doing: I think that I have the first part correct; that is, the
three blanks and two string values. The first three dictionaries are:

     DATA_MAP_BLANK = {
       chr(32)+chr(32): 0       # SP + SP
       }
     DATA_MAP_2 = {
       chr(32)+chr(36): 'nat',  # SP + $
       chr(96)+chr(32): 'eco',  #   + SP
       chr(36)+chr(32): 'soc'   #  $ + SP
       }
     DATA_MAP_5 = {
       chr(32)+chr(36): 'pro',  # SP + $
       chr(96)+chr(32): 'neu',  #   + SP
       chr(36)+chr(32): 'con'   #  $ + SP
       }

   I read the data into a string and split that into byte tokens, then start
building the row to be inserted into a database table:

     line = ser.readline()
     split_line = line.split()

     # then pre-pend the record number to the front of the row
     row.join(', ', vote_id)

     # extract category choice (row 2, bytes 2 and 3); look up value in dictionary
     cat = split_line(2:4)
     row.join(', ', DATA_MAP_2(cat) # I'm not sure this is a correct lookup

     # extract position (row 5, bytes 8 and 9P; look up value in dictionary
       pos = split_line(8:10)
       row.join(', ', DATA_MAP_5(pos))

   Is the above the most 'correct' way of extracting specific byte pairs,
using them as dictionary keys to get values, then build a string of
comma-and-quote values for insertion in the database table?

   Then, I've no idea how to get the rest of the data parsed for use as keys
in the last data mapping dictionary. I do not see a skip value for slicing,
other than in Numeric Python, and I'm not yet building an array of data.

   Here's the last dictionary:

     DATA_MAP_7 = {
       chr(32)+chr(16): 1.000,  # SP + DLE
       chr(32)+chr(8): 2.000,   # SP + BS
       chr(32)+chr(4): 3.000,   # SP + EOT
       chr(32)+chr(2): 4.000,   # SP + STX
       chr(32)+chr(1): 5.000,   # SP + SOH
       chr(64)+chr(32): 6.000,  #  @ + SP
       chr(16)+chr(32): 7.000,  # DLE + SP
       chr(8)+chr(32): 8.000,   # BS + SP
       chr(4)+chr(32): 9.000,   # EOT + SP
       chr(34)+chr(8): 0.500,   #  " + BS
       chr(34)+chr(4): 0.333,   #  " + EOT
       chr(34)+chr(2): 0.025,   #  " + STX
       chr(34)+chr(1): 0.200,   #  " + SOH
       chr(66)+chr(32): 0.167,  #  B + SP
       chr(18)+chr(32): 0.143,  # DC2 + SP
       chr(10)+chr(32): 0.125,  # LF + SP
       chr(6)+chr(32): 0.111    # ACK + SP
       }

   I know how I'd do all this in C, but since I'm learning python I have not
found how best to accomplish this despite the books and online references
I've read.

TIA,

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From johnjsal at NOSPAMgmail.com  Fri Sep 29 14:01:20 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 18:01:20 GMT
Subject: Talking to marketing people about Python
In-Reply-To: <efjeus$3nv$1@wake.carmen.se>
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<efjeus$3nv$1@wake.carmen.se>
Message-ID: <QbdTg.55$1n3.399@news.tufts.edu>

Magnus Lycka wrote:

> In other words, Python has to a significant taken over the role Perl
> had. 

This seems relevant to that thought (although it's not working right 
now): http://suttree.com/2006/09/02/php-is-the-new-classic/


From jjl at pobox.com  Wed Sep 27 15:47:45 2006
From: jjl at pobox.com (John J. Lee)
Date: 27 Sep 2006 20:47:45 +0100
Subject: How do I submit fixes for urllib2 & urlparse?
References: <1159185094.3276.20.camel@alfa> <ef8jqv$hrp$1@sea.gmane.org>
Message-ID: <uejtx147y.fsf@pobox.com>

Steve Holden <steve at holdenweb.com> writes:
[...]
> Keep it up and you may get commit privileges eventually!

No good deed goes unpunished :-)


John



From python.sam at googlemail.com  Wed Sep 20 17:46:24 2006
From: python.sam at googlemail.com (sam)
Date: 20 Sep 2006 14:46:24 -0700
Subject: "list index out of range" error
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
Message-ID: <1158788784.605683.286150@k70g2000cwa.googlegroups.com>

actually, that little bit of code i wrote is obscenely wrong anyway, so
please don't bother analyzing the flow.

any insight into the "list index out of range" error would still be
welcome, though.



From Roberto.Bonvallet at cern.ch  Thu Sep 14 07:57:12 2006
From: Roberto.Bonvallet at cern.ch (Roberto Bonvallet)
Date: 14 Sep 2006 11:57:12 GMT
Subject: Are Python's reserved words reserved in places they dont
	need?tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
Message-ID: <eebg2o$ou0$1@sunnews.cern.ch>

"Delaney, Timothy (Tim)" wrote:
> Antoon Pardon wrote:
> 
>> This is just an idea of mine, nothing I expect python to adapt.
>> But just suppose the language allowed for words in bold. A word
>> in bold would be considered a reserved word, a word in non bold
>> would be an identifier.
> 
> Exactly how am I supposed to use my text editor to make words bold? Is
> every text editor supposed to understand a "python format" for code?

That's easy:  <b>pass</b>, <b>return</b>, ...
Hmm, that's too verbose, maybe it would be better to do it just by
appending a underscore to the word:  pass_, return_, ...

wink_
-- 
Roberto Bonvallet


From http  Fri Sep  8 20:33:20 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 17:33:20 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
Message-ID: <7xvenxx4j3.fsf@ruckus.brouhaha.com>

bearophileHUGS at lycos.com writes:
> print sum( ([i]*n for i,n in enumerate(seq)), [])

Wow, I had no idea you could do that.  After all the discussion about
summing strings, I'm astonished.


From bj_666 at gmx.net  Tue Sep 19 11:13:22 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Tue, 19 Sep 2006 17:13:22 +0200
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<4na377F9esroU1@uni-berlin.de>
	<mailman.264.1158666512.10491.python-list@python.org>
	<4naeceF9c3hpU2@uni-berlin.de> <7xk63zhpln.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2006.09.19.15.13.21.703417@gmx.net>

In <7xk63zhpln.fsf at ruckus.brouhaha.com>, Paul Rubin wrote:

> "Diez B. Roggisch" <deets at nospam.web.de> writes:
>> > Python stores local variables in an indexed array, but globals in a
>> > dictionary. Looking things up by index is faster than looking them up by
>> > name.
>> 
>> Interesting. How is the index computed? I would have assumed that locals()
>> is somehow used, which is a dicht.
> 
> They're static indexes assigned at compile time.

Which BTW is the reason why ``locals()['answer'] = 42`` does not work
within functions.  The dictionary isn't the dictionary that's used for
locals but a proxy just for read access.

Ciao,
	Marc 'BlackJack' Rintsch



From gagsl-py at yahoo.com.ar  Thu Sep 21 18:38:29 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 19:38:29 -0300
Subject: Can I inherit member variables?
In-Reply-To: <45128244$0$641$636a55ce@news.free.fr>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<eetnu9$gj7$1@online.de>
	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>
	<mailman.400.1158835802.10491.python-list@python.org>
	<45128244$0$641$636a55ce@news.free.fr>
Message-ID: <7.0.1.0.0.20060921193402.01f9a818@yahoo.com.ar>

At Thursday 21/9/2006 09:14, Bruno Desthuilliers wrote:

> > When you construct an object instance, it is of a certain type from that
> > precise moment, and you can't change that afterwards.
>
>Err... Actually, in Python, you can. It's even a no-brainer.

Yes, but trying to explain that to a beginner would just make things 
worse... You must grab the inheritance concept first.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From george.sakkis at gmail.com  Fri Sep  1 14:08:36 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 1 Sep 2006 11:08:36 -0700
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
Message-ID: <1157134116.277783.98200@e3g2000cwe.googlegroups.com>

jwaixs wrote:

> Hello,
>
> How can I disgrate (probably not a good word for it) a list? For
> example:
>
> a = [1,2]
> b = 3
> c = [a] + [b]     # which makes [[1,2],3]
>
> Then how can I change c ([[1,2],3]) into [1,2,3]? I have a simple
> function for this:
> ========================
> def flatten(l):
>        r = []
>        s = [l]
>        while len(s) > 0:
>                i = s.pop()
>                if i.__class__ == list:
>                        for c in i:
>                                s.append(c)
>                else:
>                        r.append(i)
>        return r
> ========================
> But this function isn't really doing it in the "python-way". Doesn't
> have python an obscure function or buildin to do this?

No, it doesn't, but it's easy to roll one on your own, e.g. using a
recursive generator; in fact, if you had searched for "flatten" in the
google group of c.l.py, you'd find this: http://tinyurl.com/ndobk


George



From esj at harvee.org  Fri Sep 29 15:52:52 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 15:52:52 -0400
Subject: another distutils question
In-Reply-To: <efjsuo$d73$1@sea.gmane.org>
References: <efjmjp$mr2$1@sea.gmane.org>
	<efjpma$16d$1@sea.gmane.org>	<451D753E.7060707@harvee.org>
	<efjsuo$d73$1@sea.gmane.org>
Message-ID: <451D7994.40100@harvee.org>

Robert Kern wrote:
> 
> Okay, if it's just for internal use, then I certainly have no objection. Use a 
> setup.cfg file:
> 
>    http://docs.python.org/inst/config-syntax.html
> 
> Specifically, use something like the following section:
> 
> [install]
> install_scripts=/path/to/scripts/directory
> 

thank you thank you thank you.  That was the magic bit of missing 
information.

Now I get to puzzle out how to install the CGI plus images plus 
stylesheets plus plus plus mess.  Probably a bit outside of the scope of 
distutils even if the CGI programs are Python.  ;-)

---eric



From rdiaz02 at gmail.com  Mon Sep 25 15:30:28 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Mon, 25 Sep 2006 21:30:28 +0200
Subject: Embed Python in HTML?
In-Reply-To: <1159211834.10848.8.camel@dwarmo.inf.ed.ac.uk>
References: <1159211834.10848.8.camel@dwarmo.inf.ed.ac.uk>
Message-ID: <624934630609251230p10c737b7o8ec674a83f1c9a17@mail.gmail.com>

On 9/25/06, Sean Hammond <S.P.Hammond at sms.ed.ac.uk> wrote:
> Forgive my ignorance, but I sometimes write custom dynamic web-pages
> using PHP, by simply embedding PHP in HTML with <?php ?> tags, and
> renaming for example index.html to index.php and making it executable. I
> only use this for very minor things like calling a script, and don't
> really want to learn any more PHP as it looks awful. So I was wondering,
> is it possible to throw together dynamic web pages like this using
> Python or other languages? If so, can anyone point me to any relevant
> tutorials, references or other info?


Dear Sean,

You have _lots_ of choices. Many web frameworks provide exactly what
you want, and then some. And I guess what could make your choice
harder is deciding how much of that "some" you want.

I'd start going over:

http://wiki.python.org/moin/Templating

(or
http://wiki.python.org/moin/WebProgramming
for broader stuff).


Best,

R.


>
> Thanks
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From http  Sun Sep 17 10:27:04 2006
From: http (Paul Rubin)
Date: 17 Sep 2006 07:27:04 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<1158235392.623992.138340@i42g2000cwa.googlegroups.com>
Message-ID: <7xy7siva9z.fsf@ruckus.brouhaha.com>

"mystilleef" <mystilleef at gmail.com> writes:
> I use D-Bus (Python). I recommend it. I don't know how cross platform
> it is. However, it supports message passing of most built-in (strings,
> ints, lists, dictionaries etc) Python objects accross processes. You
> can mimick clean Erlang-like concurrency with it. It is the future of
> IPC on Desktop Unix. Given Python's crippled threading implementation,
> it can play a role in making your Python applications scalable, with
> regards to concurrency. I am recommending D-Bus because I have used it,
> and I know it works. I didn't read this of a newsgroup or mailing list.

It looks useful, but as far as I can tell, it's just another IPC
thingie that works through sockets, sort of like pyro without the
remote objects.  I don't see how it's related to Erlang-like
concurrency (which means ultralightweight coroutines, not heavyweight
Unix or Windows processes).  I think Python concurrency schemes get
interesting when they at least share memory (like POSH).  Otherwise I
think of them more as "distributed" than "concurrent".


From gabrielg_laburando at yahoo.com.ar  Tue Sep 26 14:31:48 2006
From: gabrielg_laburando at yahoo.com.ar (Gabriel G)
Date: Tue, 26 Sep 2006 15:31:48 -0300
Subject: A critique of cgi.escape
In-Reply-To: <efak2d$hbo$3@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<mailman.633.1159251691.10491.python-list@python.org>
	<efak2d$hbo$3@lust.ihug.co.nz>
Message-ID: <7.0.1.0.0.20060926152914.0410aba0@yahoo.com.ar>

At Tuesday 26/9/2006 04:16, Lawrence D'Oliveiro wrote:

> >> >> What precisely do you think it would "break"?
> > FWIW, a *lot* of unit tests on *my* generated html code would break...
>Why did you write your code that way?

Uhm, maybe because I relied on the published documentation of a 
published standard module? Just modify the behavior in *your* own 
cgi.escape and all of us will be happy...



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From glenn at tangelosoftware.net  Fri Sep 29 01:10:21 2006
From: glenn at tangelosoftware.net (glenn)
Date: 28 Sep 2006 22:10:21 -0700
Subject: analyzing removable media
Message-ID: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>

Hi
can anyone tell me how given a directory or file path, I can
pythonically  tell if that item is on 'removable media', or sometype of
vfs, the label of the media (or volume) and perhaps any other details
about the media itself?
thanks
Glenn



From mail at microcorp.co.za  Sun Sep  3 05:45:19 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sun, 3 Sep 2006 11:45:19 +0200
Subject: IndentationError: expected an indented block
References: <1157170194.270363.67430@h48g2000cwc.googlegroups.com><mailman.10280.1157184700.27775.python-list@python.org><1157185599.404098.70620@p79g2000cwp.googlegroups.com>
	<edbfij$pqk$1@news.albasani.net>
Message-ID: <012d01c6cf44$448aa320$03000080@hendrik>

 "Georg Brandl" <g.brandl-nospam at gmx.net> Wrote:


| casioculture at gmail.com wrote:
| > Hendrik van Rooyen wrote:
| >> <casioculture at gmail.com> Wrote:
| >>
| >>
| >> |
| >> | Haha. How can I fix this!
| >> |
| >> |
| >> |
| >>
| >> Use either tabs, or spaces, but not both....
| >>
| >> - Hendrik
| > 
| > Haha. I know. I just find it silly that a language insists on
| > indentation. I'd long known it but just was reminded of it when I
| > messed a little with the interpreter.
| 
| Let me tell you that we've had far better trolls.
| 
| Georg

 *grin* - I can't complain, having trolled myself...

- Hendrik




From hugh.frater at gmail.com  Fri Sep 15 05:33:24 2006
From: hugh.frater at gmail.com (Hugh)
Date: 15 Sep 2006 02:33:24 -0700
Subject: add without carry
In-Reply-To: <1158311964.932017.186470@i3g2000cwc.googlegroups.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
Message-ID: <1158312804.852104.204850@i42g2000cwa.googlegroups.com>

Sorry, here's an example...

5+7=12

added without carrying, 5+7=2

i.e the result is always less than 10

I've been thinking some more about this and my brain is starting to
work something out... I just wondered if there was a function in python
math to do this automatically...

Hugh



From steve at holdenweb.com  Mon Sep  4 04:41:59 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 04 Sep 2006 09:41:59 +0100
Subject: upgrade 2.4 -> 2.5 HowTo
In-Reply-To: <44fbdd29$0$28386$ba620e4c@news.skynet.be>
References: <44fbdd29$0$28386$ba620e4c@news.skynet.be>
Message-ID: <edgorm$t91$1@sea.gmane.org>

Helmut Jarausch wrote:
> Hi,
> 
> what has to be done for upgrading from Python 2.4 to 2.5?
> 
> - How can I find out which packages (in addition to the core packages) have been
>    installed up to now
> - Can I just copy   /usr/local/lib/python2.4/site-packages  to
>                      /usr/local/lib/python2.5 ?
> 
Alas, no, this will only work for pure Python packages.

If any of your packages are "extensions" in compiled languages 
(typically C or C++) then they need to be completely rebuilt, as the 
interpreter API changes between releases.

Technically you should be able to copy the pure Python packages and 
midules across, althought eh .pyc file format alos differs between 
releases. However, the .pyc files will all be rebuilt automatically when 
they are required.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From polychrom at softhome.net  Sat Sep 23 08:07:03 2006
From: polychrom at softhome.net (mistral)
Date: 23 Sep 2006 05:07:03 -0700
Subject: Need compile python code
Message-ID: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>

Need compile python code, source is in html and starts with parameters:

#!/bin/sh -
"exec" "python" "-O" "$0" "$@"

I have installed ActivePython for windows.



From harbingerofpeace at post.com  Sun Sep 24 16:09:14 2006
From: harbingerofpeace at post.com (Pete)
Date: 24 Sep 2006 13:09:14 -0700
Subject: What is the best way to "get" a web page?
In-Reply-To: <mailman.537.1159118985.10491.python-list@python.org>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<92nRg.4760$nX4.2074@tornado.texas.rr.com>
	<1159069783.563618.80380@k70g2000cwa.googlegroups.com>
	<1159072858.576765.9020@k70g2000cwa.googlegroups.com>
	<1159115212.945175.245670@b28g2000cwb.googlegroups.com>
	<1159117755.949467.109740@k70g2000cwa.googlegroups.com>
	<mailman.537.1159118985.10491.python-list@python.org>
Message-ID: <1159128554.879247.55550@h48g2000cwc.googlegroups.com>

> > Functionally they are the same, but third line included in Firefox.
> > Opera View Source command produces the same result as Python.
> [snip]
>
> It's better to compare with the result of a downloader-only (instead
> of a parser), like wget on Unix. That way you'll get exactly the same
> bytes (assuming the page is static).
>
> --
> Felipe.

Ahhhh. wget - most cool. My temp.html matches wget. Now to capture that
pesky css stuff...

Thanks,
Pete



From dale at riverhall.nospam.co.uk  Tue Sep 12 13:01:27 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Tue, 12 Sep 2006 18:01:27 +0100
Subject: Inter process signalling
References: <GxBNg.6611$Dj4.5066@fe11.usenetserver.com>
Message-ID: <SJBNg.373$ze4.160@fe06.usenetserver.com>

Dale Strickland-Clark wrote:

> In Linux this is easy with 'signal' and 'kill' but how can I get one
> Python process to signal another (possibly running as a service)?
> 
> All I need is a simple prod with no other data being sent and none being
> returned - except that the signal was delivered.
> 
> Receiving a signal should generate an interrupt. I'm not looking for a
> solution the involves polling.
> 
> Thanks
The essential bit of information missing from this is: on Windows.

I want to signal between processes running *on Windows*.

That's what happens when you try to rush a post before going home.
Thank you for your tolerance.
-- 
Dale Strickland-Clark
Riverhall Systems www.riverhall.co.uk



From onurb at xiludom.gro  Thu Sep 21 12:24:14 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 21 Sep 2006 18:24:14 +0200
Subject: How to return an "not string' error in function?
In-Reply-To: <1158855308.877117.187050@b28g2000cwb.googlegroups.com>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
	<71oau3-vr5.ln1@lairds.us>
	<1158855308.877117.187050@b28g2000cwb.googlegroups.com>
Message-ID: <4512bcaf$0$609$636a55ce@news.free.fr>

breakfastea at gmail.com wrote:
(OT : please dont top-post)

> Thank you for your inputing which has been great inspirational:)
> 
> What I tried to do is to write a string.split() module, 

So don't waste time:

>>> "ab eced f aazaz".split()
['ab', 'eced', 'f', 'aazaz']
>>> "ab-eced-ff-aazaz".split('-')
['ab', 'eced', 'ff', 'aazaz']
>>>



-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From grante at visi.com  Wed Sep 13 14:34:00 2006
From: grante at visi.com (Grant Edwards)
Date: Wed, 13 Sep 2006 18:34:00 -0000
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1hlki4l.hxeyzim53ewmN%aleax@mac.com>
	<1158171845.820805.35810@d34g2000cwd.googlegroups.com>
Message-ID: <12ggjoouch213d@corp.supernews.com>

On 2006-09-13, metaperl <metaperl at gmail.com> wrote:

> One way to avoid the issue I brought up is for the syntax to
> be very regular... like Lisp or Tcl:
>
> set class "algebra"
>
> (setq class "algebra")

Unfortunately (or fortunately?) the human mind isn't very
regular and seems to prefer structured, redundant, and
irregular languages. One might suppose it makes pattern
recognition by neural networks easier.

-- 
Grant Edwards                   grante             Yow!  I am having a
                                  at               CONCEPTION--
                               visi.com            


From djbpitt+python at pitt.edu  Sat Sep  2 23:33:18 2006
From: djbpitt+python at pitt.edu (David J Birnbaum)
Date: Sat, 02 Sep 2006 23:33:18 -0400
Subject: overriding character escapes during file input
Message-ID: <44FA4CFE.2000601@pitt.edu>

Dear Python-list,

I need to read a Unicode (utf-8) file that contains text like:
> blah \fR40\fC blah
I get my input and then process it with something like:
> inputFile = codecs.open(sys.argv[1],'r', 'utf-8')
>
> for line in inputFile:
When Python encounters the "\f" substring in an input line, it wants to 
treat it as an escape sequence representing a form-feed control 
character, which means that it gets interpreted as (or, from my 
perspective, translated to) "\x0c". Were I entering this string myself 
within my program code, I could use a raw string (r"\f") to avoid this 
translation, but I don't know how to do this when I am reading a line 
from a file. If all I cared about was getting my code to work, I could 
simply let the translation take place and then undo it within my 
program, but, as Humpty Dumpty said, "it's a question of which is to be 
master," and I would prefer to coerce Python into reading the line the 
way I want it to be read, rather than let it do as it pleases and then 
clean up afterwards.

Can anyone advise?

In case it matters, I'm using ActivePython 2.4 under Windows XP.

Thanks,

David
djbpitt+python at pitt.edu


From anthra.norell at vtxmail.ch  Tue Sep 26 04:25:57 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Tue, 26 Sep 2006 10:25:57 +0200
Subject: newbe's re question
In-Reply-To: <1159129156.184099.131500@m7g2000cwm.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>	<mailman.322.1158749465.10491.python-list@python.org>	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>	<mailman.341.1158774359.10491.python-list@python.org>	<1158796645.943655.180890@i3g2000cwc.googlegroups.com>	<mailman.426.1158871980.10491.python-list@python.org>	<1159038932.050142.245830@i3g2000cwc.googlegroups.com>	<mailman.519.1159087984.10491.python-list@python.org>
	<1159129156.184099.131500@m7g2000cwm.googlegroups.com>
Message-ID: <4518E415.10607@vtxmail.ch>

Eric_Dexter at msn.com wrote:
> Frederic Rentsch wrote:
>   
>> Eric_Dexter at msn.com wrote:
>>     
>>> These are csound files.  Csound recently added python as a scripting
>>> language and is allowing also allowing csound calls from outside of
>>> csound.  The nice thing about csound is that instead of worrying about
>>> virus and large files it is an interpiter and all the files look
>>> somewhat like html.  4,000 virus free instruments for $20 is available
>>> at
>>> http://www.csounds.com and the csound programming book is also
>>> available.  The downside is that csound is can be realy ugly looking
>>> (that is what I am trying to change) and it lets you write ugly looking
>>> song code that is almost unreadable at times (would look nice in a
>>> grid)
>>>
>   
snip snip snip snip snip .........

> I was hoping to add and remove instruments..  although the other should
> go into my example file because it will come in handy at some point.
> It would also be cool to get a list of instruments along with any
> comment line if there is one into a grid but that is two different
> functions.
>
> http://www.dexrow.com
>
>   

Eric,

Below the dotted line there are two functions.
      "csound_filter ()" extracts and formats instrument blocks from 
csound files and writes the output to another file. (If called without 
an output file name, the output displays on the screen).
      The second function, "make_instrument_dictionaries ()", takes the 
file generated by the first function and makes two dictionaries. One of 
them lists instrument ids keyed on instrument description, the other one 
does it the other way around, listing descriptions by instrument id. 
Instrument ids are file name plus instrument number.
      You cannot depend on this system to function reliably, because it 
extracts information from comments. I took my data from 
"ems.music.utexas.edu/program/mus329j/CSPrimer.pdf" the author of which 
happens to lead his instrument blocks with a header made up of comment 
lines, the first of which characterizes the block. That first line I use 
to make the dictionaries. If your data doesn't follow this practice, 
then you may not get meaningful dictionaries and are in for some 
hacking. In any case, this doesn't look like a job that can be fully 
automated. But if you can build your data base with a manageable amount 
of manual work you should be okay.
      The SE filter likewise works depending on formal consistency with 
my sample. If it fails, you may have to either tweak it or move up to a 
parser.
      I'll be glad to provide further assistance to the best of my 
knowledge. But you will have to make an effort to express yourself 
intelligibly. As a matter of fact the hardest part of proposing 
solutions to your problem is guessing what your problem is. I suggest 
you do this: before you post, show the message to a good friend and edit 
it until he understands it.

Regards

Frederic
.
     
------------------------------------------------------------------------------------------------------------------------

def csound_filter (csound_file_name, 
name_of_formatted_instrument_blocks_file = sys.stdout):

   """
      This function filters and formats instrument blocks out of a 
csound file.

      csound_formatter (csound_file_name, 
name_of_formatted_instrument_blocks_file)
      csound_formatter (csound_file_name) # Single argument: screen output

   """

   import SE
   Instruments_Filter = SE.SE ('<EAT> "~;.*~==(10)" 
"~instr(.|\n)*?endin~==(10)(10)"')

   INDENT      = 10
   CODE_LENGTH = 50

   def format ():
      for l in instruments_file:
         line = l.strip ()
         if line == '':
            out_file.write ('\n')
         else:
            if line [0] == ';':       # Comment line
               out_file.write ('%s\n' % line)
            else:
               code = comment = ''
               if line [-1] == ':':   # Label
                  out_file.write ('%s\n' % line)
               else:
                  if ';' in line:
                     code, comment = line.split (';')
                     out_file.write ('%*s%-*s;%s\n' % (INDENT, '', 
CODE_LENGTH, code, comment))
                  else:
                     out_file.write ('%*s%s\n' % (INDENT, '', line))

   instruments_file_name = Instruments_Filter (csound_file_name)
   instruments_file = file (instruments_file_name, 'w+a')
   if name_of_formatted_instrument_blocks_file != sys.stdout:
      out_file = file (name_of_formatted_instrument_blocks_file, 'wa')
      owns_out_file = True
   else:
      out_file = name_of_formatted_instrument_blocks_file
      owns_out_file = False

   format ()
  
   if owns_out_file: out_file.close ()



def make_instrument_dictionaries (name_of_formatted_instrument_blocks_file):

   """
      This function takes a file made by the previous function and 
generates two dictionaries.
      One records instrument ids by description. The other one 
instrument descriptions by id.
      Instrument ids are made up of file name and instrument number. 
      If these two dictionaries are pickled they can be used like data 
bases and added to
      incrementally.

   """
  
   import re
   instrument_numbers_re = re.compile ('instr *([0-9,]+)')

   in_file = file (name_of_formatted_instrument_blocks_file, 'ra')

   instrument_descriptions_by_id = {}
   instrument_ids_by_description = {}

   inside = False
   for line in in_file:
      line = line.strip ()
      if not inside:
         if line:
            instrument_description = line [1:].rstrip ()
            inside = True
      else:
         if line == '':
            inside = False
      if inside:
         if line.startswith ('instr'):
            instrument_numbers = instrument_numbers_re.match 
(line).group (1).split (',')
            instrument_ids = ['%s: %s' % 
(name_of_formatted_instrument_blocks_file, i_n) for i_n in 
instrument_numbers]
            instrument_ids_by_description [instrument_description] = 
instrument_ids
            for instrument_id in instrument_ids:
               instrument_descriptions_by_id [instrument_id] = 
instrument_description

   in_file.close ()

   return instrument_descriptions_by_id, instrument_ids_by_description

---------------------------------------------------------------------------------------------

 >>> for instrument_id in instrument_descriptions_by_id:
           print '%s  - %s' % (instrument_id, 
instrument_descriptions_by_id [instrument_id])

T:\instruments: 5  -  Simple Gating Instrument with Chorus
T:\instruments: 4  - Portamento/Panning Instrument
T:\instruments: 12  - Basic FM Instrument with Variable Vibrato
T:\instruments: 11  - Basic FM Instrument with Variable Vibrato
T:\instruments: 10  -  Basic FM Instrument with Variable Vibrato

---------------------------------------------------------------------------------------------
  
 >>> for description in instrument_ids_by_description:
           print description
           for instrument in instrument_ids_by_description [description]:
              print '   ', instrument

 Basic FM Instrument with Variable Vibrato
    T:\instruments: 9
    T:\instruments: 10
    T:\instruments: 11
    T:\instruments: 12
 Simple Gating Instrument with Chorus
    T:\instruments: 5
    T:\instruments: 6
    T:\instruments: 7
    T:\instruments: 8
Portamento/Panning Instrument
    T:\instruments: 1
    T:\instruments: 2
    T:\instruments: 3
    T:\instruments: 4

---------------------------------------------------------------------------------------------



From steve at holdenweb.com  Fri Sep 15 14:41:52 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 15 Sep 2006 14:41:52 -0400
Subject: REQ: Java/J2EE Developer 10 Months
In-Reply-To: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>
References: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>
Message-ID: <450AF3F0.5020808@holdenweb.com>

shrikant at coolsoft.cc wrote:
[...]
> Skill:
> --------
> 
> *Java, 2 year UNIX - HP / Solaris, 2 yrs OOA+D, Corba, Perl, XML, UML.
> *Java dev experience, Swing, JPS, 2 years of OOA+D.

Clearly not spam, since the guy is so in touch with the readership of 
this group ... sigh ... is it just me, or is this person an idiot?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rshepard at appl-ecosys.com  Sat Sep 16 11:41:51 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Sat, 16 Sep 2006 08:41:51 -0700 (PDT)
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <18oehqziifr36.1h6zhiw7sysmy.dlg@40tude.net>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<18oehqziifr36.1h6zhiw7sysmy.dlg@40tude.net>
Message-ID: <Pine.LNX.4.64.0609160838480.13961@salmo.appl-ecosys.com>

On Sat, 16 Sep 2006, Thorsten Kampe wrote:

> PS Actually the author wrote the finest and best Windows Editor and I also
> use EditPad Pro under Linux (together with Wine) because of the lack of
> usables editors under Linux.

   Wow! That's really opned you up for flaming! Most of us choose emacs or
vi, and after 30 years of continued existence and improvements no one could
successfully argue that they are not usable editors for linux, *BSD, or any
other OS.

   Of course, there are many folks who prefer to enter text by
pointing-and-clicking, but that's the environment in which they were brought
up. I'm really happy that you found an editor that you like, but your
rationale will not sway many others.

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From apardon at forel.vub.ac.be  Wed Sep 13 04:08:52 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 13 Sep 2006 08:08:52 GMT
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>
	<7x4pvckyyu.fsf@ruckus.brouhaha.com>
Message-ID: <slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>

On 2006-09-13, Paul Rubin <http> wrote:
> Antoon Pardon <apardon at forel.vub.ac.be> writes:
>> This is just an idea of mine, nothing I expect python to adapt.
>> But just suppose the language allowed for words in bold. A word
>> in bold would be considered a reserved word, a word in non bold
>> would be an identifier. 
>
> Heh, sounds like ColorForth, in which words meant different things
> depending on what color they were written in (www.colorforth.com).
> Madness, if you ask me ;-).

Well I'm sure people would be able the abuse the feature with
madness as a result. However that is nothing new.

One place where I would use such a feature is in a unittest
package.  I think being able to write self.assert or self.raise
looks better than having to append an underscore.

I once experimented with end markers in python, but I dropped
it because end.if wasn't legal python.

If python would make this distinction, one wouldn't need
to be concerned anymore that the introduction of a new
keyword would break code.

-- 
Antoon Pardon


From martin at v.loewis.de  Sat Sep 23 12:18:17 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 23 Sep 2006 18:18:17 +0200
Subject: Building things with setup.py
In-Reply-To: <Ni7Rg.4474$6S3.739@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<451368E9.10901@v.loewis.de>
	<A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>
	<451446F6.5060807@v.loewis.de>
	<uWXQg.3954$IA.1364@newssvr11.news.prodigy.com>
	<4514CE00.1060102@v.loewis.de>
	<Ni7Rg.4474$6S3.739@newssvr25.news.prodigy.net>
Message-ID: <45155E49.6060109@v.loewis.de>

James Stroud schrieb:
> <COMMENTARY>Though great for self development, I'm not so sure such
> lessons should be necessary to build these tools.</COMMENTARY>

Yes. The lesson you should take from this is: don't try to be smarter
than the authors of the software. It should build out of the box, if
you follow the build instructions literally. Deviate to the tiniest
from the instructions, and you are on your own.

If it doesn't work out of the box even though you followed the
instructions, don't try to fix it. You didn't write it, fixing
it will be a huge effort. Instead, get help from somebody, and/or
report a bug.

Always strive for the simplest possible setup. If you find that you
have to customize something, and the instructions did not tell you
to do so, question this customization. It is likely wrong or
unnecessary.

Regards,
Martin


From lm401 at cam.ac.uk  Thu Sep 21 06:34:31 2006
From: lm401 at cam.ac.uk (LorcanM)
Date: 21 Sep 2006 03:34:31 -0700
Subject: Can I inherit member variables?
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<eetnu9$gj7$1@online.de>
Message-ID: <1158834871.215969.126140@i42g2000cwa.googlegroups.com>

Thanks for the reply.

I think there's a basic misunderstanding about the nature of
inheritance on my side.

What I want to do is instantiate the sub class (derived class) from
within the animal class. I then expect the sub class to have inherited
some basic properties that it knows it has (weight, colour). If I can
expand the example I gave previously to try to make this a little
clearer:

class animal:
  def __init__(self, weight, colour):
    self.weight = weight
    self.colour = colour

  def describeMyself(self, type, measurement):
    if type == 'bird':
      myanimal = bird(measurement)
    elif type == 'fish':
      myanimal = fish(measurement)

class bird(animal):
  def __init__(self, wingspan):
    self.wingspan = wingspan
    print "I'm a bird, weight %s, colour %s, wingspan %s" %
(self.weight, self.colour, self.wingspan)

class fish(animal):
  def __init__(self, length):
    self.length = length
    print "I'm a fish, weight %s, colour %s, length %s" % (self.weight,
self.colour, self.length)


It seems from what you say that the attributes (member variables) will
have to be passed forward explicitly like any other function call. This
of course is sensible, 'bird' or 'fish' are not tied to a specific
instance of 'animal' when they are instantiated.

Thanks for the help,


 Lorcan.


Benjamin Niemann wrote:


> You'll have to invoke the __init__ method of the superclass, this is not
> done implicitly. And you probably want to add the weight and colour
> attributes to your subclass in order to pass these to the animal
> constructor.
>
> class fish(animal):
>   def __init__(self, length, weight, colour):
>     animal.__init__(self, weight, colour)
>     self.length = length
>     print self.weight, self.colour, self.length
>



From xah at xahlee.org  Tue Sep 26 23:03:01 2006
From: xah at xahlee.org (Xah Lee)
Date: 26 Sep 2006 20:03:01 -0700
Subject: Computer Language Popularity Trend
Message-ID: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>


Computer Language Popularity Trend

This page gives a visual report of computer languages's popularity, as
indicated by their traffic level in newsgroups. This is not a
comprehensive or fair survey, but does give some indications of
popularity trends.

http://xahlee.org/lang_traf/index.html

  Xah
  xah at xahlee.org
? http://xahlee.org/



From christian at dowski.com  Tue Sep 26 09:14:25 2006
From: christian at dowski.com (Christian)
Date: 26 Sep 2006 06:14:25 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159230645.917779.319770@m73g2000cwd.googlegroups.com>
	<1159231520.965115.298520@b28g2000cwb.googlegroups.com>
Message-ID: <1159276465.590088.224790@d34g2000cwd.googlegroups.com>

I said:
> > Previously I used Python while earning a living working in IT at a
> > college.  Currently it is putting food on the table via contract jobs.
> > I imagine there are "many" out there like me, doing just that.

faulkner wrote:
> where do you find these "contract jobs", if you don't mind my asking?

Both of my current contracts came by way of my involvement with the
CherryPy open source project.

Christian
http://www.dowski.com



From kay.schluehr at gmx.net  Sat Sep 30 13:02:07 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 30 Sep 2006 10:02:07 -0700
Subject: Escapeism
In-Reply-To: <slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>
	<slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1159635727.840033.169540@m73g2000cwd.googlegroups.com>

Sybren Stuvel wrote:
> Kay Schluehr enlightened us with:
> > Usually I struggle a short while with \ and either succeed or give up.
> > Today I'm in a different mood and don't give up. So here is my
> > question:
> >
> > You have an unknown character string c such as '\n' , '\a' , '\7' etc.
> >
> > How do you echo them using print?
> >
> > print_str( c ) prints representation '\a' to stdout for c = '\a'
> > print_str( c ) prints representation '\n' for c = '\n'
> > ...
> >
> > It is required that not a beep or a linebreak shall be printed.
>
> try "print repr(c)".

This yields the hexadecimal representation of the ASCII character and
does not simply echo the keystrokes '\' and 'a' for '\a' ignoring the
escape semantics. One way to achieve this naturally is by prefixing
'\a' with r where r'\a' indicates a "raw" string. But unfortunately
"rawrification" applies only to string literals and not to string
objects ( such as c ). I consider creating a table consisting of pairs
{'\0': r'\0','\1': r'\1',...}  i.e. a handcrafted mapping but maybe
I've overlooked some simple function or trick that does the same for
me.

Kay



From g.brandl-nospam at gmx.net  Tue Sep 26 05:55:18 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 26 Sep 2006 11:55:18 +0200
Subject: A critique of cgi.escape
In-Reply-To: <efakui$idf$4@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz> <efaknl$867$2@news.albasani.net>
	<efakui$idf$4@lust.ihug.co.nz>
Message-ID: <efate6$ilf$1@news.albasani.net>

Lawrence D'Oliveiro wrote:
> In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:
> 
>> Lawrence D'Oliveiro wrote:
>>> In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M wrote:
>>> 
>>>> Lawrence is right that the escape method doesn't work the way he expects
>>>> it to.
>>>> 
>>>> Rewriting a library module simply because a developer is surprised is a
>>>> *very* bad idea.
>>> 
>>> I'm not surprised. Disappointed, yes. Verging on disgust at some comments
>>> in this thread, yes. But "surprised" is what a lot of users of the
>>> existing cgi.escape function are going to be when they discover their
>>> code isn't doing what they thought it was.
>> 
>> Why should they be surprised? The documentation states clearly what
>> cgi.escape() does (as does the docstring).
> 
> Documentation frequently states stupid things. Doesn't mean it should be
> treated as sacrosanct.

That's not the point. The point is that someone using cgi.escape() will hardly
be surprised of what it does and doesn't do.

Georg


From maxm at mxm.dk  Tue Sep 26 03:56:43 2006
From: maxm at mxm.dk (Max M)
Date: Tue, 26 Sep 2006 09:56:43 +0200
Subject: A critique of cgi.escape
In-Reply-To: <efak2d$hbo$3@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<mailman.633.1159251691.10491.python-list@python.org>
	<efak2d$hbo$3@lust.ihug.co.nz>
Message-ID: <4518dd3c$0$14011$edfadb0f@dread15.news.tele.dk>

Lawrence D'Oliveiro skrev:
> In message <mailman.633.1159251691.10491.python-list at python.org>, Gabriel G
> wrote:
> 
>> At Monday 25/9/2006 11:08, Jon Ribbens wrote:
>>
>>>>> What precisely do you think it would "break"?
>>>> existing code, and existing tests.
>>> I'm sorry, that's not good enough. How, precisely, would it break
>>> "existing code"? Can you come up with an example, or even an
>>> explanation of how it *could* break existing code?
>> FWIW, a *lot* of unit tests on *my* generated html code would break...
> 
> Why did you write your code that way?

Stop feeding the troll.


From steve at holdenweb.com  Thu Sep  7 15:06:30 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 20:06:30 +0100
Subject: 3 Simple Questions About Python/IDLE
In-Reply-To: <IGYLg.4603$v%4.3327@newsread1.news.pas.earthlink.net>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<IGYLg.4603$v%4.3327@newsread1.news.pas.earthlink.net>
Message-ID: <edpqif$1p5$2@sea.gmane.org>

Dennis Lee Bieber wrote:
> On 7 Sep 2006 06:53:44 -0700, "Omar" <outstretchedarm at hotmail.com>
> declaimed the following in comp.lang.python:
> 
> 
>>1) why don't python / idle use numbered lines in their scripting, like
>>basic?  how do you keep track of large batches of code without them?
>>
> 
> 	Because BASIC was created in the days of paper teletypes with
> minimal editors. In BASIC, you would correct a line by retyping it with
> the line number and the interpreter was responsible for "reordering" the
> lines in memory. You could actually type a program in from last line to
> first (ie, upside down) and it would run.
> 
> 	NO other language that I know of uses line numbers to control source
> code order. Heck, Visual BASIC doesn't use line numbers either (I don't
> recall if AmigaBASIC required them either).
>  
Well, there was Focal. Focal used floating-point line numbering, making 
it much easier to squeeze extra lines in at any point int he program.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jonas.esp at googlemail.com  Sun Sep 17 03:59:14 2006
From: jonas.esp at googlemail.com (GinTon)
Date: 17 Sep 2006 00:59:14 -0700
Subject: EyeDB Object Database (ODBMS) - Python wrapper
In-Reply-To: <1157819934.666486.280360@i42g2000cwa.googlegroups.com>
References: <1157819934.666486.280360@i42g2000cwa.googlegroups.com>
Message-ID: <1158479954.368690.158490@d34g2000cwd.googlegroups.com>

I received the following answer of Eric Viara, EyeDB.org:

"We planned to introduce soon a plugin mechanism to facilitate the way
to write language bindings such as PHP5, Python, PERL and so on. But we
do not know yet if the Python binding will be written by the core
staff.

We do not plan to support XML in the few months. But as eyedb is an
open source project, we expect that somebody else will write supports
for XML."


In any case I advised to him that the creation of a Google group would
be positive to obtain a community interested in that project.



From steve at holdenweb.com  Sat Sep 30 21:43:20 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 01 Oct 2006 02:43:20 +0100
Subject: How to Catch 2 Exceptions at once?
In-Reply-To: <312cfe2b0609301832q6be77943n2b32494226ccd42d@mail.gmail.com>
References: <312cfe2b0609301832q6be77943n2b32494226ccd42d@mail.gmail.com>
Message-ID: <efn6e6$dnv$1@sea.gmane.org>

Gregory Pi?ero wrote:
> How can I catch 2 exceptions at once for example:
> 
>         try:
>             self.gses = opener.open(req)
>         except (urllib2.HTTPError,urllib2.URLError):
>             do something..
> 
> Seems to work, but how do I also get information about the error?
> 
As usual, by adding an additional name after the exception specification:

         try:
             self.gses = opener.open(req)
         except (urllib2.HTTPError,urllib2.URLError), exdata:
             do something with exdata ...


Pedantically speaking, of course, you aren't catching two exceptions at 
once because they don't occur simultaneously: you are writing a 
statement that catches either of two exceptions.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From simonwittber at gmail.com  Tue Sep 12 08:25:43 2006
From: simonwittber at gmail.com (Simon Wittber)
Date: 12 Sep 2006 05:25:43 -0700
Subject: Help me use my Dual Core CPU!
Message-ID: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>

I've just bought a new notebook, which has a dual core CPU.

I write cross platform games in Python, and I'd really like to be able
to use this second core (on my machine, and on user's machines) for any
new games I might write.

I know threads won't help (in CPython at least) so I'm investigating
other types of concurrency which I might be able to use. I really like
the PyLinda approach, however I need to be able to pass around all the
simple python types, which PyLinda won't help me with. Also, PyLinda is
more focused on distributing computing; I really only want to have 2
processes cooperating (or 4, if I had 4 CPUs/cores etc).

Is there any cross platform way to share python objects across
processes? (I've found POSH, but it's old, and doesn't appear to be
maintained). I could implement my own object space using shared memory,
but from what I can see, this is not available on Win32.

Are there any other concurrency options I've not discovered yet?


-Sw.



From rdiaz02 at gmail.com  Sun Sep 17 07:33:39 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Sun, 17 Sep 2006 13:33:39 +0200
Subject: Help me use my Dual Core CPU!
In-Reply-To: <7x4pv753mq.fsf@ruckus.brouhaha.com>
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
	<mailman.405.1158107055.5279.python-list@python.org>
	<7x4pv753mq.fsf@ruckus.brouhaha.com>
Message-ID: <624934630609170433i318dbabbx5ce684588b198587@mail.gmail.com>

On 17 Sep 2006 00:55:09 -0700, Paul Rubin
<"http://phr.cx"@nospam.invalid> wrote:
> "Ramon Diaz-Uriarte" <rdiaz02 at gmail.com51> writes:
> > You might also want to check
> > http://www.lindaspaces.com/products/NWS_overview.html52
> > by the guys who "invented" Linda.
>
> Cool, I guess.


I've only played a little bit with it, but it does certainly look
nice. Nick Carriero (from network spaces) also developed a similar
thing for R, the GNU S statistical programming language (also from the
above url), and the demonstration I saw of it was _really_ impressive.


> I looked at these.  Oz/Mozart is a whole nother language, worth
> examining for its ideas, but the implementation is quite slow.

Yes, that is true. On the plus side, though, the "Concepts,
techniques, and models of computer programming" book, by Van Roy and
Haridi, uses Oz/Mozart, so you get a thorough, pedagogical, and
extended ---900 pages--- "tutorial" of it. But the speed and, so far,
limited ways of being friendly to other languages, can be show
stoppers.

> Kamaelia doesn't attempt concurrency at all.  Its main idea is to use
> generators to simulate microthreads.  Candygram is a module that lets
> you write code in Python that's sort of like Erlang code, but it uses
> OS threads for the equivalent of Erlang processes.  That misses the
> point of Erlang pretty badly, which is that processes are extremely
> lightweight (i.e. normally they are microthreads) so you can have
> millions of them active simultaneously (e.g. one for each active
> telephone connected to a big phone switch).

Thanks for the clarification (I had only cursorily looked at them).

>
> Right now I want to check out GHCI (the Glasgow Haskell compiler),
> which may be the closest thing to a "winner":
>
>   - very advanced language, even higher level than Python, once described
>     by somebody as "what Python should have become"
>   - native code compilation
>   - lock-free concurrency using software transactional memory (STM)

Thanks for this. I'll check it out!!

Best,

R.


From gagsl-py at yahoo.com.ar  Wed Sep 20 19:59:38 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 20:59:38 -0300
Subject: byte count unicode string
In-Reply-To: <4511C676.2000400@jamots.com>
References: <4511C676.2000400@jamots.com>
Message-ID: <7.0.1.0.0.20060920201053.05861a30@yahoo.com.ar>

At Wednesday 20/9/2006 19:53, willie wrote:

>What is the proper way to describe "ustr" below?
>
>  >>> ustr = buf.decode('UTF-8')
>  >>> type(ustr)
><type 'unicode'>
>
>
>Is it a "unicode object that contains a UTF-8 encoded
>string object?"

ustr is an unicode object. Period. An unicode object contains 
characters (not bytes).
buf, apparently, is a string - a string of bytes. Those bytes 
apparently represent some unicode characters encoded using the UTF-8 
encoding. So, you can decode them -using the decode() method- to get 
the unicode object.

Very roughly, the difference is like that of an integer and its 
representations:
w = 1
x = 0x0001
y = 001
z = struct.unpack('>h','\x00\x01')
All three objects are the *same* integer, 1.
There is no way of knowing *how* the integer was spelled, i.e., from 
which representation it comes from - like the unicode object, it has 
no "encoding" by itself.
You can go back and forth between an integer number and its decimal 
representation - like astring.decode() and ustring.encode()



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From fdu.xiaojf at gmail.com  Fri Sep 22 05:58:41 2006
From: fdu.xiaojf at gmail.com (fdu.xiaojf at gmail.com)
Date: Fri, 22 Sep 2006 17:58:41 +0800
Subject: Is it possible to save a running program and reload next time
 ?
In-Reply-To: <ef009v$c25$1@fuerst.cs.uni-magdeburg.de>
References: <mailman.386.1158824225.10491.python-list@python.org>	<FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>	<mailman.412.1158845232.10491.python-list@python.org>	<eeu8b9$108$1@fuerst.cs.uni-magdeburg.de>	<mailman.444.1158905950.10491.python-list@python.org>
	<ef009v$c25$1@fuerst.cs.uni-magdeburg.de>
Message-ID: <4513B3D1.9070707@gmail.com>

Hans Georg Krauthaeuser wrote:
> fdu.xiaojf at gmail.com wrote:
>   
>> Hans Georg Krauthaeuser wrote:
>>     
>>> fdu.xiaojf at gmail.com wrote:
>>>  
>>>       
>>>> Can objects be saved and reloaded by "Pickle"  ?  I have tried but no
>>>> success.
>>>>
>>>>     
>>>>         
>>> Yes, that's the intended use of pickle/cPickle. There are examples in
>>> the docs:
>>>
>>> http://docs.python.org/lib/module-pickle.html
>>>
>>> What have you tried and what didn't work?
>>>
>>> Hans Georg
>>>   
>>>       
>> My program is a genetic algorithm based program, so I thought I just
>> need to save a generation object of the population and reload it later
>> then my program could continue. But after I saved a generation object
>> from within python using cPickle and reload it from another program, it
>> said that some class object couldn't be found. Now I realized that a
>> program cannot be suspended and reloaded by just simply dumping and
>> loading using cPickle/Pickle.
>>
>> I will try stackless python later.
>>
>> Thanks a lot .
>>
>> Regards,
>>
>> xiaojf
>>
>>     
> I use pickle to periodically save measured data for measurements that
> take several days to finish. Actually, I save a class instance with the
> data, the measurement methods and additional informations what method
> was called and with what parameters. If the measurement crashes due to
> some reasons, I recreate the class instance from the pickle file, call
> the appropriate method with the saved parameters. Then, the method has
> to look what data is already there and will continue to measure the rest.
>
> I have no idea whether that will help you in your situation.
>
> Anyway, I wish you all the best.
>
> Hans Georg
>   
I just realized another serious problem.

Random values are extensively used in my program, so the program may 
probably not continue to run from an absolutely identical state where it 
stopped. 

Can the state of the random value generator be saved ?

Regards,

xiaojf


From claird at lairds.us  Sun Sep 17 20:44:32 2006
From: claird at lairds.us (Cameron Laird)
Date: Mon, 18 Sep 2006 00:44:32 +0000
Subject: tcl list to python list?
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
	<CE4Pg.4266$vD2.1873@tornado.texas.rr.com>
	<3k70u3-3d8.ln1@lairds.us>
	<AclPg.4515$vD2.429@tornado.texas.rr.com>
Message-ID: <go61u3-4j4.ln1@lairds.us>

In article <AclPg.4515$vD2.429 at tornado.texas.rr.com>,
Paul McGuire <ptmcg at austin.rr._bogus_.com> wrote:
			.
			.
			.
>Er?  Thanks for the nice comments re: pyparsing, sometimes I feel a little 
>self-conscious always posting these pyparsing snippets.  So I'm glad you 
>clarified your intent with your "I'll be more precise" paragraph.  But I'm 
>not sure I see the reason for an 18-O "No!"
>
>"Outsider"?  I'm no stranger to Tcl (although I *am* a bit rusty).  In the 
			.
			.
			.
>- write a Tcl proc to recursively traverse a list, returning a stringified 
>list in Python-like syntax (enclosing non-list items in ''s, separating with 
>commas, nesting sublists with []'s, etc.)
			.
			.
			.
I like your work, Paul.  My comment about "outsider" was aimed
at other readers of this thread, not you; I recognize I didn't
make that clear.

I'm still unsure how the original poster wants to handle nested
lists.  I'm almost certain, though, that it's hard to teach Tcl
Python syntax (and vice-versa) for general cases.  On the other
hand, as you write in a paragraph I elided, the original
questioner might be indifferent to all the esoterica we're 
imagining.

Elsewhere in this thread, I posted what I claim is a complete 
solution (for *some* problem--again, I remain unsure exactly 
what the target is).  I trust your judgment on its readability
compared to your pyparsing-based example.

Keep posting those examples!  I think pyparsing deserves plenty
more marketing of exactly this type.  

I don't have an installation of pyparsing handy.  If this topic
interests folks, I should have another machine or two repaired
early this week, and I can more carefully trace through the 
pathologies to which pyparsing of Tcl might be subject.


From lycka at carmen.se  Fri Sep 29 04:23:27 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Fri, 29 Sep 2006 10:23:27 +0200
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <efil5v$s19$1@wake.carmen.se>

John Salerno wrote:
> It's a nice thought that a person can earn a living programming with 
> Python, which is fun enough to use just for its own sake. But for 
> someone like me (i.e. no programming experience) it's always a little 
> disheartening to see that most (if not all) job descriptions that ask 
> for Python still require some C/C++ or other language knowledge. I 
> suppose this isn't an issue if you studied CS in college, because you 
> would have been exposed to many languages.
> 
> But what if you are an expert Python program and have zero clue about 
> other languages? Can you still earn a living that way, or do most/all 
> companies require multiple language proficiency?

Being a programmer isn't just a matter of knowing one or several
programming languages, just as being an author isn't merely a matter
of knowing writing and a language.

I've been involved in one development project where COBOL programmers
were handed detailed design descriptions written in pseudo code. The
SQL code used to access the database was complete in the spec. These
programmer just needed to know how to translate pseudo code to COBOL
one module at a time, and of course, they needed to know how to operate
the IDE and run tests etc.

In all other projects I've worked in, programmers were also involved in
design etc, often in the whole loop from requirements gathering to
deployment and maintenance of the product.

Knowing a programming language is a tiny part of that. Knowing two or
three languages is still a tiny part of the set of skill and abilities
required. I'm talking about communication skills, ability to extract
relevant information from people who know a problem domain, but lack
system design skills etc, strong analytical abilities, design skills,
problem solving skills, the general ability to get things done in a
reliable and timely manner etc etc.

I'd be reluctant to employ someone without at least a B.Sc. in some
relevant subject unless they had a proven track record.


From robert.kern at gmail.com  Sat Sep 23 19:42:58 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 18:42:58 -0500
Subject: QuoteSQL
In-Reply-To: <451541db$0$4171$ba624c82@nntp02.dk.telia.net>
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<451541db$0$4171$ba624c82@nntp02.dk.telia.net>
Message-ID: <ef4gpt$gda$1@sea.gmane.org>

Anders J. Munch wrote:

> Always sad to see an SQL DBMS willfully violate the SQL standard.

You must be a constantly depressed person, then.  :-)

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From utabintarbo at gmail.com  Tue Sep 26 16:13:02 2006
From: utabintarbo at gmail.com (utabintarbo)
Date: 26 Sep 2006 13:13:02 -0700
Subject: Win32: Access to network resources w/o user login
In-Reply-To: <mailman.727.1159297800.10491.python-list@python.org>
References: <1159293185.847276.77190@i3g2000cwc.googlegroups.com>
	<mailman.727.1159297800.10491.python-list@python.org>
Message-ID: <1159301582.009888.3670@m73g2000cwd.googlegroups.com>


Steve Holden wrote:

> http://oss.coresecurity.com/projects/impacket.html
>
> perhaps?
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden

That looks *very* interesting. I will report back on my findings. It
seems to have an ftp-like interface using smb as a transport. I am not
sure this will accomplish what I am after, but I will certainly give it
hell for a bit. :-)



From python.list at tim.thechases.com  Sat Sep  2 10:34:46 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 02 Sep 2006 09:34:46 -0500
Subject: how to remove n bytes in a file?
In-Reply-To: <200609021321.k82DLTnO005030@fe10.bluebottle.com>
References: <200609021321.k82DLTnO005030@fe10.bluebottle.com>
Message-ID: <44F99686.7000707@tim.thechases.com>

> Suppose we have a very large file, and wanna remove 'n' bytes in the
> middle of the file. My thought is:
> 1, read() until we reach the bytes should be removed, and mark the
> position as 'pos'.
> 2, seek(tell() + n) bytes
> 3, read() until we reach the end of the file, into a variable, say 'a'
> 4, seek(pos) back to 'pos'
> 5, write(a)
> 6, truncate()
> 
> If the file is really large, the performance may be a problem.

The biggest problem I see would be trying to read some massive 
portion if step #3 involves a huge amount of data.  If you're 
dealing with a multi-gigabyte file, and you want to delete 5 
bytes beginning at 20 bytes into the file, step #3 involves 
reading in file_size-(20+5) bytes into memory, and then spewing 
them all back out.  A better way might involve reading a 
fixed-size chunk each time and then writing that back to its 
proper offset.

def shift(f, offset, size, buffer_size=1024*1024):
	"""deletes a portion of size "size" from file "f", starting at 
offset, and shifting the remainder of the file to fill.

The buffer_size can be tweaked for performance preferences,
defaulting to 1 megabyte.
"""
	f.seek(offset+size)
	while True:
		buffer = f.read(buffer_size)
		if not buffer: break
		f.seek(offset)
		f.write(buffer)
		f.seek(buffer_size,1)
		offset += buffer_size
	f.truncate()

if __name__ == '__main__':
	offset = ord('p')
	size = 5
	buffer_size = 30

	from StringIO import StringIO
	f = StringIO(''.join([chr(i) for i in xrange(256)]))
	print repr(f.read())
	print '=' * 50
	f.seek(0)
	shift(f, offset, size, buffer_size)
	f.seek(0)
	print repr(f.read())


> Is there a clever way to finish? Could mmap() help? Thx

No idea regarding mmap().

-tkc









From outstretchedarm at hotmail.com  Thu Sep  7 12:44:44 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 09:44:44 -0700
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <mailman.130.1157646878.5279.python-list@python.org>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
	<1157642876.793030.134030@p79g2000cwp.googlegroups.com>
	<45003CCC.4050804@websafe.com>
	<1157644621.982238.11580@e3g2000cwe.googlegroups.com>
	<1157645461.166427.263150@m73g2000cwd.googlegroups.com>
	<mailman.130.1157646878.5279.python-list@python.org>
Message-ID: <1157647484.648546.157210@i42g2000cwa.googlegroups.com>

I'm working through a tutorial,
http://swaroopch.info/text/Byte_of_Python:Control_Flow, and I sorta
can't get through the tutorial without overcoming these little
speedbumps.  This is why I'm asking these questions.



From onurb at xiludom.gro  Tue Sep 12 04:26:08 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 12 Sep 2006 10:26:08 +0200
Subject: egg and modpython
In-Reply-To: <1157969582.029638.136340@i42g2000cwa.googlegroups.com>
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
	<1157969582.029638.136340@i42g2000cwa.googlegroups.com>
Message-ID: <45066f21$0$28612$636a55ce@news.free.fr>

Paul Boddie wrote:
> Bruno Desthuilliers wrote:
>> Wensheng a ?crit :
>>> I installed pysqlite2 using easy_install.
>>> and got this when using it from modpython:
>>> --------------------------------------------------------------------------------------------------
>>> Mod_python error: "PythonHandler etc.modpython"
> 
> [...]
> 
> I applaud you for studying the traceback in more depth than I can find
> the motivation for, Bruno. ;-) However, this looks like a program using
> some package installed by setuptools/easy_install needs to unpack that
> package when running.

Yes, this is explained in the doc. Pure Python eggs can run from zipped
files, but when there's a binary extension it has to be unzipped. The
OP's problem is that the PYTHON_EGG_CACHE env points to a directory not
writable for the user account. The two obvious solutions are to change
this env variable or reinstall the egg with the appropriate flag to
avoid installing it as a zipped egg.


>>> ExtractionError: Can't extract file(s) to egg cache
>>> The following error occurred while trying to extract file(s) to the
>>> Python egg cache:
>>>   [Errno 13] Permission denied: '/var/www/.python-eggs'
> 
> And this wants to happen apparently in the home directory of the Web
> server user, whose rights may be somewhat limited. Or perhaps one has
> to initialise setuptools for any particular user by running it first as
> that user:

No, it's just a matter of specifying another value for the PYTHON_EGG_CACHE.

> 
> [...]
> 
>>> Can peak developers fix this please?
>> Why should they "fix" something that's
>> 1/ documented
>>     -> http://peak.telecommunity.com/DevCenter/EggFormats#zip-file-issues
> 
> "The Internal Structure of Python Eggs / STOP! This is not the first
> document you should read!"

That doesn't mean you should not read it.

> A case of "Beware of the Leopard" perhaps?

!-)

>> 2/ not a an egg specific issue
> 
> In my experience, most other package managers actually unpack their
> resources when invoked, rather than leaving the programs to attempt
> such things when running.

eggs are the Python's equivalent to Java's JAR, not a RPM-like. I said
it was not an egg-specific issue (which is not totally accurate) because
it mostly have to do with loading dynamic libs (.so, .dll etc) from
zipped files.

> Debian packages even compile the bytecode
> files to ensure that nothing tries (and fails) to write them to
> privileged locations afterwards.

So does eggs. But once again, eggs are *not* a general-purpose package
management system like apt, RPM, emerge etc...

(snip)
> This situation looks either a lot like a use case whose popularity has
> been underestimated by the developers - intriguing given the number of
> people supposedly using setuptools for their Web application
> deployments - or a packaging mistake with the pysqlite2 .egg file.

My VHO is that eggs needing to extract some of their content should not
be packaged as zip-safe.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From fredrik at pythonware.com  Tue Sep 26 06:19:21 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 12:19:21 +0200
Subject: where are isinstance types documented?
In-Reply-To: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
Message-ID: <efaur9$2p4$1@sea.gmane.org>

codefire wrote:

> I'm using the isinstance built-in function. I've found the docs for it,
> but there are no docs on the supported types.

*all* types and classes can be used.

> For example isinstance(a, int) works fine but isinstance(s, string)
> doesn't - because 'string is not known'.
> 
> I do know how to import the types module and then use defined types
> such as 'types.StringType' - but the documentation says that from 2.2
> this is not the preferred way.
> 
> So, where's the documentation for types I can use with isinstance, such
> as 'int'?

based on http://docs.python.org/ref/types.html, here's a list of the 
most commonly used core types:

None:
     (singleton; use "is None" to test for this)

Numbers:
     int
     long
     bool
     float
     complex

Sequences:
     str
     unicode
     tuple
     list

Mappings:
     dict

Class Types:
     (any class defined using "class")

Files:
     file

hope this helps!

</F>



From andychambers2002 at yahoo.co.uk  Mon Sep 25 06:19:15 2006
From: andychambers2002 at yahoo.co.uk (andychambers2002 at yahoo.co.uk)
Date: 25 Sep 2006 03:19:15 -0700
Subject: Daemonizing python
In-Reply-To: <ef7sjn$e45$1@online.de>
References: <pan.2006.09.24.21.01.54.522795@net.hr><ef7sjn$e45$1@online.de>
Message-ID: <1159179555.826608.11620@i42g2000cwa.googlegroups.com>


Andi Clemens wrote:
> Hi,
>
> what is the main difference of running a python program as a daemon or
> as a cronjob?
>
> I have written a program at work that checks all internet connections of
> our failover sites and saves the results in a MySQL-database.
> The whole program is made with django (a webframework) so I had to be
> sure that the "checking procedure" is done every 30 minutes.

With a daemon, you might be able to flag up problems earlier than the
periodic check would allow.  On the other hand, you *know* that cron
will run every 30 minutes.  Do you *know* that your daemon will not
stop running somehow?  I suppose I put more trust in cron than I do in
myself.

Regards,
Andy



From duncan.booth at invalid.invalid  Fri Sep 29 03:16:13 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 Sep 2006 07:16:13 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz> <ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
	<Xns984B793317A15duncanbooth@127.0.0.1>
	<efdnqd$adv$1@lust.ihug.co.nz>
	<Xns984B8482155F6duncanbooth@127.0.0.1>
	<efeqpd$8vh$1@lust.ihug.co.nz> <efhnai$fia$3@lust.ihug.co.nz>
Message-ID: <Xns984D541C371F3duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> In message <efeqpd$8vh$1 at lust.ihug.co.nz>, LI wrote:
> 
>>>>> execfile("QuoteSQL.py")
>>>>> EscapeSQLWild(r"\%")
>> '\\\\%'
>>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%")
>> '"%\\\\\\\\%%"'
>>>>> EscapeSQLWild(r"\%") == r"\\%"
>> True
>>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%") == r'"%\\\\%%"'
>> True
> 
> With the correction to EscapeSQLWild, this becomes:
> 
>>>> execfile("QuoteSQL.py")
>>>> EscapeSQLWild(r"\%")
> '\\\\\\%'
>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%")
> '"%\\\\\\\\\\\\%%"'
>>>> EscapeSQLWild(r"\%") == r"\\\%"
> True
>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%") == r'"%\\\\\\%%"'
> True
> 

True but irrelevant. The point is that it isn't relevant whether you are 
seeing 4, 6, 8, or 12 backslashes, because you wrote the code to produce 
the number you thought you wanted and you had misunderstood how MySQL 
works. That's why it is important in a situation like this to test against 
the code that actually uses the string. I had no idea how MySQL would 
handle escapes in this situation, but I didn't need to know, I just wrote 
some tests and figured out which strings would make them pass or fail.

Anyway, congratulations on finally getting the message.


From tuomas.vesterinen at pp.inet.fi  Thu Sep 28 13:27:38 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Thu, 28 Sep 2006 17:27:38 GMT
Subject: Resuming a program's execution after correcting error
In-Reply-To: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
References: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
Message-ID: <eCTSg.376$Rl.184@read3.inet.fi>

Sheldon wrote:
> Does anyone know if one can resume a python script at the error point
> after the error is corrected?
> I have a large program that take forever if I have to restart from
> scratch everytime. The error was the data writing a file so it seemed
> such a waste if all the data was lost and must be recalculated again.

May be you could put some parameter to your main loop:

start_point=begin
if start_point==begin: output=open('outputfile', 'w')
else                 : output=open('outputfile', 'a')

while start_point <= case <= end_point:

     try:
         do_complex_computation(case)
     except Exception:
         print case
         break

If you get an error you repair the program and set

start_point=case

and go on with the program.

Tuomas


From MonkeeSage at gmail.com  Sat Sep 30 03:59:35 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 00:59:35 -0700
Subject: Hot new programming languages - according to the TIOBE index
References: <1159543075.244454.186650@h48g2000cwc.googlegroups.com>
	<1159602507.757469.15760@k70g2000cwa.googlegroups.com>
Message-ID: <1159603175.254176.312970@b28g2000cwb.googlegroups.com>

MonkeeSage wrote:
> vasudevram wrote:
> > Ruby and Python are doing well, according to the latest TIOBE index.
>
> Doing well?? Ruby is up 14 points, relatively...ghea! ruby p0wns!11 ;)

Sorry my fellow pythonistas! I didn't see that this was cross-posted. I
was of course being silly, but I wanted to make that clear so as not to
unduely offend!

Regards,
Jordan



From horpner at yahoo.com  Tue Sep 26 13:46:21 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 26 Sep 2006 19:46:21 +0200
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
Message-ID: <slrnehipsi.ds.horpner@FIAD06.norwich.edu>

On 2006-09-26, Neal Becker <ndbecker2 at gmail.com> wrote:
> Any suggestions for transforming the sequence:
>
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
>
> into a succession of tuples:
>
> [(1, 2), (3, 4)...]
>
> In other words, given a seq and an integer that specifies the
> size of tuple to return, then for example:

It turns out there's a itertools recipe to do this; the last one
in the itertools recipe book:

def grouper(n, iterable, padvalue=None):
    """
    grouper(3, 'abcdefg', 'x') --> ('a','b','c'), ('d','e','f'), ('g','x','x')

    """
    return izip(*[chain(iterable, repeat(padvalue, n-1))]*n)

-- 
Neil Cerutti
There are two ways to argue with a woman, and neither of them
work. --Carlos Boozer


From ccurvey at gmail.com  Sat Sep  9 16:24:13 2006
From: ccurvey at gmail.com (Chris Curvey)
Date: 9 Sep 2006 13:24:13 -0700
Subject: makepy, ADO and dynamic.py
Message-ID: <1157833453.539654.197000@i42g2000cwa.googlegroups.com>

I'm trying to track down a performance issue in my Windows code, and
hotshot is telling me that the most time and calls are spent in these
methods

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
    75975 63982.779    0.842 124464.419    1.638
c:\python24\lib\site-packages\win32com\client\dynamic.py:285(_make_method_)
    71294 47871.424    0.671 50629.224    0.710
c:\python24\lib\site-packages\win32com\client\__init__.py:444(_ApplyTypes_)

If I understand correctly, running makepy on the appropriate COM class
should get rid of the dynamic stuff and let it be called directly.  I
use ADODB to talk to my database server, and I've run makepy for
"Microsoft Active X Data Objects 2.8 Library" [1] and on "Microsoft
ActiveX Data Objects Recordset 2.8 Library", but I'm still seeing the
call to the dynamic.py class.

Am I right that seeing the calls in "dynamic.py" implies that I'm
running "makepy" on the wrong thing?  Any idea what I should be running
makepy on?

[1] I seem to have a bunch of versions of "Microsoft ActiveX Data
Objects Library", is there a chance that another ADO library is being
used?



From fredrik at pythonware.com  Fri Sep 29 01:53:25 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 07:53:25 +0200
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159488825.144496.86610@c28g2000cwb.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>	<451A314F.3060703@isy.liu.se>	<mailman.815.1159378067.10491.python-list@python.org>	<1159395485.824735.319090@b28g2000cwb.googlegroups.com>	<1159419097.556600.160750@k70g2000cwa.googlegroups.com>
	<1159488825.144496.86610@c28g2000cwb.googlegroups.com>
Message-ID: <eficck$5s9$1@sea.gmane.org>

flyingisfun1217 at gmail.com wrote:

>> Since the examples out of An Introduction to Tkinter work, what else
>> could be useful to you is hard to guess.
> 
> Basically, any kind of program using Tkinter, and has some sort of
> usefulness

you don't seem to have noticed, but you *still* haven't explained what 
examples you tried, and *how* they failed on your machine.

</F>



From garyjefferson123 at yahoo.com  Tue Sep  5 13:55:19 2006
From: garyjefferson123 at yahoo.com (garyjefferson123 at yahoo.com)
Date: 5 Sep 2006 10:55:19 -0700
Subject: accepting cStringIO in an extension
Message-ID: <1157478919.293472.220190@m79g2000cwm.googlegroups.com>

I want to accept a cStringIO object in a function in a python extension
module.  How do I do this?

e.g.,

static PyObject *myfunc(PyObject *self, PyObject *args)
{
    PyObject *cstringio;
    if (!PyArg_ParseTuple(args, "O:cStringIO", &cstringio)) {
            PyErr_SetString(PyExc_ValueError,
                    "value must be a cstringio");
            return NULL;
    }
    /* how to get at the data buffer or call read() on cstringio? */

}

I understand that I probably want PyEval_CallObject(), but I don't know
how to get at the read() method of cstringio.

Thanks,
Gary



From bradfordh at gmail.com  Fri Sep 15 12:55:45 2006
From: bradfordh at gmail.com (Tempo)
Date: 15 Sep 2006 09:55:45 -0700
Subject: Pre-defining an action to take when an expected error occurs
In-Reply-To: <1158303569.603466.36130@e3g2000cwe.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
	<1158303569.603466.36130@e3g2000cwe.googlegroups.com>
Message-ID: <1158339345.603379.61610@b28g2000cwb.googlegroups.com>

John Machin  thanks for all of your help, and I take responsibility for
the way I worded my sentences in my last reply to this topic. So in an
effort to say sorry, I want to make it clear to everybody that it seems
as though errors in my code and use of external programs (Excel in
particular) are making "range(sh.nrows)" have faulty results. I am
trying to pinpoint the spot in my code or use of Excel, before
"range(sh.nrows) is executed, that is bugged. John Machin, I am
thrilled that the package xlrd exists at all because it simplifies a
daunting task for a beginner programer--me. Its uses are not bound to
beginners either. So thanks for the package and your help to this point.



From duncan.booth at invalid.invalid  Mon Sep 25 05:32:07 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 09:32:07 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <Xns98496B28F5FBFduncanbooth@127.0.0.1>

Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:

> Ok, should have tested it better. This works fine on my machine,
> though:
> 
> curs.execute(
>     "select * from details where person_name like ?",
>     ('%' + name + '%', )
> )
> 
> Including all sorts of quotes, newlines, backslashes etc. in the name.
> 
I think his point was that any '%' characters inside name act like 
wildcards whereas his version looked for literal percents.

This could be an argument for having a utility function to escape the 
wildcards for this sort of situation, but certainly not an argument for his 
proposed QuoteSQL.


From smcg4191zz at friizz.RimoovAllZZs.com  Tue Sep 12 22:50:14 2006
From: smcg4191zz at friizz.RimoovAllZZs.com (Stuart McGraw)
Date: Tue, 12 Sep 2006 20:50:14 -0600
Subject: elementtree: line numbers and iterparse
Message-ID: <12gesf81fprdmef@corp.supernews.com>

I have a broad (~200K nodes) but shallow xml file
I want to parse with Elementtree.  There are too many 
nodes to read into memory simultaneously so I use
iterparse() to process each node sequentially.

Now I find i need to get and save the input file line 
number of each node.  Googling turned up a way 
to do it by subclassing FancyTreeBuilder,
(http://groups.google.com/group/comp.lang.python/msg/45f5313409553b4b?hl=en&)
but that tries to read everything at once.

Is there a way to do something similiar with iterparse()?



From fredrik at pythonware.com  Fri Sep 29 11:04:06 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 17:04:06 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159540482.924744.164420@k70g2000cwa.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>	<451CD389.3010800@jessikat.plus.net>	<mailman.932.1159533269.10491.python-list@python.org>
	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>
Message-ID: <efjcl4$hkg$1@sea.gmane.org>

Larry Hastings wrote:

>> Nice idea, though. You might also see how it does on tasks like
>>
>> s = ""
>> for i in range(100000):
>>     s += "a"
> 
> Sure.  Here are the results, but with range (10000000):

ten million?  what hardware are you running this on?

> 	Python 2.5 release: 31.0s
> 	Python 2.5 locally built: 30.7s
> 	Python 2.5 concat: 4.4s
>         % Improvement: *697%*!
> 
> Woah!  Thanks for suggesting a benchmark where it really shines :)

what's in "s" when that loop is done?

</F>



From stuart at stuartbishop.net  Wed Sep 27 22:09:03 2006
From: stuart at stuartbishop.net (Stuart Bishop)
Date: Thu, 28 Sep 2006 09:09:03 +0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <1158386881.666330.246150@d34g2000cwd.googlegroups.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
Message-ID: <451B2EBF.6050501@stuartbishop.net>

Frank Millman wrote:

> I used to use 'select lastval()', but I hit a problem. If I insert a
> row into table A, I want the id of the row inserted. If it is a complex
> insert, which triggers inserts into various other tables, some of which
> may also be auto-incrementing, lastval() returns the id of the row last
> inserted into any auto-incrementing table.
> 
> I therefore use the following -
>     cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)
> 
> where tableid is the specific table I want (in this example, table A),
> and columnid is the column specified as the auto-incrementing one.

If you are using a modern PostgreSQL (8.1 for sure, maybe 8.0), this is
better spelt:

cur.execute("SELECT currval(pg_get_serial_sequence(%s, %s))" % (
    tableid, columnid))

(Assuming of course your table name and column name don't contain odd
characters like = or ' or ., in which case you need to properly quote them).

The reason it is better is that in odd cases the sequence name will not
always be %(tableid)s_%(columnid)s_seq, such as after you have renamed a table.

-- 
Stuart Bishop <stuart at stuartbishop.net>
http://www.stuartbishop.net/

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From nitte.sudhir at gmail.com  Wed Sep 27 12:21:38 2006
From: nitte.sudhir at gmail.com (kath)
Date: 27 Sep 2006 09:21:38 -0700
Subject: Problem with - WMI()
Message-ID: <1159374098.600131.201830@i42g2000cwa.googlegroups.com>

Hi,

the following is code snippet I used to run plink command from Python.
If I run plink command directly it pops out a command prompt window. To
make the command promot window invisible I used WMI as follows. The
command runs perfect. But it throughs the error following the code
snipet.

def run_command():
   cmd="plink -v -N -batch -l username-pw password-L
3307:127.0.0.1:3306      dbb.mydatabase.com"
   c = wmi.WMI ()
   startup = c.Win32_ProcessStartup.new (ShowWindow=win32con.SW_HIDE)
   pid, result =
c.Win32_Process.Create(CommandLine=cmd,ProcessStartupInformation=startup)


D:\...\...\library.zip\wmi.py:215:

FutureWarning: hex()/oct() of negative int will return a signed string
in Python 2.4 and up
Unhandled exception in thread started by <function run_command at
0x00D05130>
Traceback (most recent call last):
  File "newfma.py", line 159, in run_command
  File "wmi.pyc", line 975, in connect
  File "wmi.pyc", line 220, in handle_com_error
wmi.x_wmi: 0x800401e4 - Invalid syntax

Can anyone tell me why is this error arising. And can avoid this error.


Thank you,
sudhir.



From harbingerofpeace at post.com  Sat Sep 23 21:38:08 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 18:38:08 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159060573.521054.243850@m7g2000cwm.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
Message-ID: <1159061888.165073.105510@h48g2000cwc.googlegroups.com>

Fade in to episode II...

> ...
> This is compiling a *constant* regular expression, and works OK on the
> Windows distribution of Python 2.4.3 :

Hmmmm. Here's the version information stuff:

Python 2.4.2 (#1, Feb 12 2006, 03:59:46)
[GCC 4.1.0 20060210 (Red Hat 4.1.0-0.24)] on linux2

I'm going to upgrade Python and see if that has any effect...
I'm running this on a Fedora Core 5 box...

> ...
> You appear to be running 2.4.n; what is n, and exactly which *x
> platform are you running it on? Perhaps a file in /usr/lib/python2.4 is
> corrupt, but we won't know until you give the *full* traceback. Do you
> get the same results when you try what I did at the interpreter
> interactive prompt?

The error I received was from the interactive prompt thing. Is there
some way I can get more verbose information or something that would be
more helpful?

Thanks,
Pete



From ironfroggy at gmail.com  Thu Sep 21 05:38:02 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Thu, 21 Sep 2006 05:38:02 -0400
Subject: Python Threading
In-Reply-To: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>
References: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>
Message-ID: <76fd5acf0609210238q6ce069f3idba976873b18d5d7@mail.gmail.com>

On 20 Sep 2006 00:27:07 -0700, daniel <daniel.baluta at gmail.com> wrote:
> Hello,
> Can anyone explain the main points in working with threads in Python.
> Why use threading and not Thread.I have read an article that i have to
> subclass the Thread class and override some function.

I repeat this all the time, but the best advice I can give you about
using threads is to not use threads at all. I would point you to good
references like Threads Considered Harmful
(http://www.kuro5hin.org/story/2002/11/18/22112/860) and The Problem
with Threads (http://www.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-1.html
- With Link to PDF). It might seem an inappropriate response to your
question to simply tell you that you should not do what you are asking
how to do, but its just the case that most often anyone without
exposure to threads has little or no understanding on just how bad
they are for many of the tasks they will be used for. Threads are
difficult to control, impossible to predict, and simply one of the
most over used, least understood causes of buggy, unmaintainable
software in the whole spectrum of development techniques.

As alternatives, look into what tasks can spawn into other processes,
asyncronous programming (a'la Twisted -
http://www.twistedmatrix.com/), and co-routine and similar facilities,
such as the tasklets of Stackless and two-way generators now included
with Python.


From gh at gregor-horvath.com  Tue Sep 19 13:39:52 2006
From: gh at gregor-horvath.com (Gregor Horvath)
Date: Tue, 19 Sep 2006 19:39:52 +0200
Subject: win32 Service: path to .py script
In-Reply-To: <45100B2F.6090409@websafe.com>
References: <4d818$450ff76d$506c2949$8802@news.chello.at>
	<45100B2F.6090409@websafe.com>
Message-ID: <28c80$45102672$506c2949$19242@news.chello.at>

Larry Bates schrieb:

> I believe that your problem is that services run under Local
> System account.  Normally Local System account would not have
> a drive mapping Y:\.  You can change the account that a service

You are absolutly correct.
I moved the script to a local drive instead of a mapped network drive,
now it works perfectly.

Thank you a lot.

-- 
  Servus, Gregor


From 71david at libero.it  Thu Sep  7 20:01:23 2006
From: 71david at libero.it (David)
Date: Fri, 8 Sep 2006 02:01:23 +0200
Subject: wxPython: StaticText Event
Message-ID: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>

Plaese look at this simple class.

import wx


class MyFrame(wx.Frame):
      def __init__(self, parent, id):
          wx.Frame.__init__(self, parent, id, "Hide test", size=(160,160))
          
          # create widgets
          self.pnl = wx.Panel(self)
          self.st = wx.StaticText(self.pnl, -1,
                    "Static Text Control", pos=(30,20))
          self.tc = wx.TextCtrl(self.pnl, -1, pos=(30,100))
          self.Layout()
          
          # Binding
          self.st.Bind(wx.EVT_ENTER_WINDOW, self.OnEnterStArea)
          self.tc.Bind(wx.EVT_ENTER_WINDOW, self.OnEnterTcArea)
          
      def OnEnterStArea(self, event):
          print "Mouse entering in STATIC text control area"
          
      def OnEnterTcArea(self, event):
          print "Mouse entering in text control area"
      
app = wx.PySimpleApp()
frame = MyFrame(None, -1)
frame.Show()
app.MainLoop()


Hovering mouse over the StaticText Control should generate an
EVT_ENTER_WINDOW event like the TextCtrl Control, but it does not happen.

How can I make the StaticText event working?

thank you
David


From davidlmontgomery at gmail.com  Tue Sep  5 21:27:26 2006
From: davidlmontgomery at gmail.com (davidlmontgomery at gmail.com)
Date: 5 Sep 2006 18:27:26 -0700
Subject: nose, doctest, and module names in subpackages
Message-ID: <1157506046.209547.203550@d34g2000cwd.googlegroups.com>

I'm trying to use both nosetests and doctest with the tests
pulled out into a separate file.  My problem is that it
seems that I need to use different import statements
depending on from where I run the tests.

Here's my directory structure:
/dir
    __init__.py
    /sub
        __init__.py
        code_file.py
        test_code_file.py
        tests.txt

--- code_file.py: ---
def example_function():
    return 0

--- test_code_file.py ---
def run_tests():
    import doctest
    result=doctest.testfile("tests.txt")
    assert result[0] == 0

if __name__ == "__main__":
    run_tests()

--- tests.txt ---
>>> from code_file import example_function

With this, nosetests works when run from /dir/sub, but
the import fails if nosetests is run from /dir.

If I change tests.txt to

--- tests.txt ---
>>> from sub.code_file import example_function

(adding "sub.") then nosetests works from /dir, but not
from /dir/sub.  And in this case "python test_code_file.py"
fails when run from /dir/sub.

In general, I would like to run doctests during development
from the directory where the code lives, leading me to
prefer "from code_file import", but I would like to run
nosetests from the top of the tree, leading me to want
"from sub.code_file import".

I played around with variations like using doctest.DocFileSuite
and nosetests' --with-doctest option, but nothing I tried
helped with the basic issue of the name of the module
varying depending on the execution directory.

It seems I'm missing something very basic here.  Any tips
would be much appreciated.

(I'm running python 2.4.1 and nosetests 0.9.0)

David



From fredrik at pythonware.com  Thu Sep 28 13:16:48 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 19:16:48 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <1159463077.471436.140740@i42g2000cwa.googlegroups.com>
References: <mailman.1980.1159437004.10490.python-list@python.org>	<mailman.873.1159439669.10491.python-list@python.org>
	<1159463077.471436.140740@i42g2000cwa.googlegroups.com>
Message-ID: <efh01v$7sq$1@sea.gmane.org>

sturlamolden wrote:

> I seem to remember that a cons joins two items, it doesn't grow a
> strait list.

http://www.lisp.org/HyperSpec/Body/fun_cons.html

"If object-2 is a list, cons can be thought of as producing a new list 
which is like it but has object-1 prepended."

</F>



From bussieremaillist at gmail.com  Tue Sep 12 07:47:39 2006
From: bussieremaillist at gmail.com (bussiere maillist)
Date: Tue, 12 Sep 2006 13:47:39 +0200
Subject: deprecated python 2.5
In-Reply-To: <ee6393$rhd$1@sea.gmane.org>
References: <8a8f62c80609120324q58af3098q27ca547784e8fc8a@mail.gmail.com>
	<ee6393$rhd$1@sea.gmane.org>
Message-ID: <8a8f62c80609120447y5cb545e7qf498b0c1511c5b05@mail.gmail.com>

thks
Regards
Bussiere

On 9/12/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> bussiere maillist wrote:
>
> > DeprecationWarning: struct integer overflow masking is deprecated
> >   return struct.pack('>H', ~value)
> >  i didn't understand if someone have some explanation
> > and what uses instead.
>
> the value doesn't fit in 16 bits.  try masking off the extra bits on the
> way in:
>
>      struct.pack("<H", (~value) & 0xFFFF)
>
> </F>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From http  Wed Sep 13 02:51:38 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 23:51:38 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
Message-ID: <7x8xkol0n9.fsf@ruckus.brouhaha.com>

"Simon Wittber" <simonwittber at gmail.com> writes:
> I've just noticed that os.fork is not available on Win32. Ouch.

Use the subprocess module.


From joel.sjoo at gmail.com  Wed Sep  6 07:37:12 2006
From: joel.sjoo at gmail.com (joel.sjoo at gmail.com)
Date: 6 Sep 2006 04:37:12 -0700
Subject: Import a textfile to MS SQL with python
In-Reply-To: <mailman.72.1157539859.5279.python-list@python.org>
References: <mailman.72.1157539859.5279.python-list@python.org>
Message-ID: <1157542632.229363.162970@b28g2000cwb.googlegroups.com>

i gott the same results with both executemany and execute. i will try
with some other sql modules. if you try tim so let me now if you cot it
to work.

many thanks  for your help.

regards joel



From mensanator at aol.com  Tue Sep 12 13:47:22 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 10:47:22 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<1158078714.772319.52690@i42g2000cwa.googlegroups.com>
	<mailman.375.1158080942.5279.python-list@python.org>
Message-ID: <1158083242.566897.180710@h48g2000cwc.googlegroups.com>


Mike Owens wrote:
> On 12 Sep 2006 09:31:54 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
>
> > > To use your specious analogy, it represents another way of doing
> > > things, which you admit yourself works. That's your justification for
> > > calling Richard Hipp a crackpot?
> >
> > What was Richard Hipp's justification for slandering the
> > writers of the SQL Language Specification?
>
> Slander? Richard wrote a free and open source relational database the
> way he wanted to, in a way that seems useful to him, and apparently
> thousands of other people. You are free to write your own open source
> relational database as well which has its own deviations from the
> standard. I say this because I'd love to see you write the worlds
> first SQL compliant database, and do it in under 30,000 lines of C,
> and make it portable across both operating systems and byte orders,
> capable of being run on cell phones and low power environments.

And when he was done, he made the ridiculous claim that
the SQL Language Specification of static typing was a bug.

>
> The only slander I see are in your ill-informed posts on this mailing
> lists which should really be directed to the SQLite list.

Why? I'm not requesting that dynamic typing be removed from
sqlite. I'm not even requesting that the slander in the sqlite docs
be removed. What I'm requesting is that these "features" of
sqlite be better presented in the Python docs, hence, no posting
to the sqlite list. Is that so hard to figure out?

> Apparently,
> you are too afraid to insult the SQLite community to its face, and
> seek refuge on the Python list.

I'm sure the sqlite community could care less about what appears
in the Python documentation.

>
> > > > > It's clear. You're just way too smart for SQLite.
> > > >
> > > > Did you see my solution to Rick Shepard's problem in the
> > > > thread "Parsing String, Dictionary Lookups, Writing to
> > > > Database Table"?
> > >
> > > The point being? -- you can write Python code and feel entitled to
> > > condescending and rude?
> >
> > Is there anything more rude than describling the SQL Language
> > Specification as a bug that needs to be fixed?
>
> Yes, namely calling respectable people (who selflessly write free and
> open source software in their spare time) crackpots. Also, not lifting
> a finger to seek help or effect change, but taking every effort to
> insult. And finally, there is entertaining the notion that people live
> to serve your needs. Yes, there are things that are clearly more rude.

So you admit that Richard Hipp's characterization of SQL was
rude. And now that we've established what you are, we're just
haggling over price.



From chris at simplistix.co.uk  Mon Sep 11 14:54:40 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 19:54:40 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <PngNg.103126$zy5.1611416@twister1.libero.it>
References: <mailman.239.1157955783.5279.python-list@python.org>	<lO8Ng.102992$_J1.824396@twister2.libero.it>	<mailman.243.1157964486.5279.python-list@python.org>
	<PngNg.103126$zy5.1611416@twister1.libero.it>
Message-ID: <4505B0F0.2010801@simplistix.co.uk>

Manlio Perillo wrote:
> 
> The problem is simple: email package does not support well Unicode strings.

Really? All the character set support seems to indicate a fair bit of 
thought went into this aspect, although it does appear that no-one 
bothered to document it :-(

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From broek at cc.umanitoba.ca  Tue Sep 19 18:52:34 2006
From: broek at cc.umanitoba.ca (Brian van den Broek)
Date: Tue, 19 Sep 2006 17:52:34 -0500
Subject: pprint: "...thank small children who sleep at night."
In-Reply-To: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
References: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
Message-ID: <451074B2.2070805@cc.umanitoba.ca>

Brian L. Troutwine said unto the world upon 19/09/06 05:30 PM:
> The heading comment to pprint reads:
> 
> #  This is a simple little module I wrote to make life easier.  I
> didn't
> #  see anything quite like it in the library, though I may have
> overlooked
> #  something.  I wrote this when I was trying to read some heavily
> nested
> #  tuples with fairly non-descriptive content.  This is modeled very
> much
> #  after Lisp/Scheme - style pretty-printing of lists.  If you find it
> #  useful, thank small children who sleep at night.
> 
> Is the last sentence an obscure reference or in-joke? Can someone
> explain it? I don't get it.
> 

Maybe it is an in-joke or reference that's blowing past me. But, I 
would assume that the author has kids whose sound sleep at night left 
him or her the time to code the module.

Best,

Brian vdB


From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 04:13:31 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 09:13:31 +0100
Subject: Import a textfile to MS SQL with python
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B40F@vogbs009.gb.vo.local>

[joel.sjoo at gmail.com]

| I'm a dba for SQL server and I Will import a textfile to SQL. 

Not a Python answer, but unless you're in it for the
learning experience, I *seriously* suggest you look
at the built-in BULK INSERT command to see if it
meets your needs.

Random URL:

http://www.sqlteam.com/item.asp?ItemID=3207

If it doesn't, then by all means post back and I'm
sure we can talk you through the Python side of things.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From ironfroggy at gmail.com  Mon Sep 18 18:01:34 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 18:01:34 -0400
Subject: Problem with operator overloading and inheritance in Python
In-Reply-To: <BAY107-F327B15E0E13ADD264CFC30FD2D0@phx.gbl>
References: <76fd5acf0609181406u73267febgd1f4ecf47b5fc8b9@mail.gmail.com>
	<BAY107-F327B15E0E13ADD264CFC30FD2D0@phx.gbl>
Message-ID: <76fd5acf0609181501s48e89b93r9ed81a962a98bcee@mail.gmail.com>

On 9/18/06, Edward Waugh <edward_waugh at hotmail.com> wrote:
> I quickly glanced at Guido's paper of new-style classes and I am puzzled
> because the definition of a new-style class looks exactly the same as that
> for the classic classes: class <name>[<optional subclasses>]: <definition of
> the class>.
>
> How do I define new-style classes?
>
> - Edward
>
>
> ----Original Message Follows----
> From: "Calvin Spealman" <ironfroggy at gmail.com>
> Reply-To: ironfroggy at gmail.com
> To: "Edward Waugh" <edward_waugh at hotmail.com>
> Subject: Re: Problem with operator overloading and inheritance in Python
> Date: Mon, 18 Sep 2006 17:06:53 -0400
>
> On 9/18/06, Edward Waugh <edward_waugh at hotmail.com> wrote:
> >Tried this and it didn't work:
> >
> >C:\Files\Python> problem.py
> >Traceback (most recent call last):
> >   File "C:\Files\Python\problem.py", line 21, in ?
> >     x += 1
> >   File "C:\Files\Python\problem.py", line 7, in __add__
> >     return type(self)(self.data + value)
> >TypeError: instance() argument 1 must be classobj, not int
> >
> >But then in a moment of inspiration I tried self.__class__(self.data +
> >value) and it worked:
>
> Sorry, I neglected to consider that you might be using old-style
> classes! For any old-style class, type(someInstance) is always the
> instance type, where as new-style classes actually give yuou the class
> itself! So either you need to do what you have done now or learn about
> and move to new-style classes. Usually you can just inherit your base
> classes from object and you wont have any trouble.

They are syntactically the same, but the difference is in some subtle
behaviors related to some lookup rules in various situations, like the
dropping of the instance type. By inheriting from object, the base
new-style class, you cause your class to become a new-style class.
This should all have been covered in anything you read.

# Old-Style
class foo:
    pass

# New-Style
class foo(object):
    pass


From george.sakkis at gmail.com  Fri Sep 15 16:03:21 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 15 Sep 2006 13:03:21 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
	<pan.2006.09.14.15.36.07.509974@gmx.net>
	<1158248572.373909.53420@d34g2000cwd.googlegroups.com>
	<mailman.94.1158249543.10491.python-list@python.org>
	<1158336701.552009.137100@m73g2000cwd.googlegroups.com>
Message-ID: <1158350601.382570.65030@i3g2000cwc.googlegroups.com>

Michael wrote:

> Robert,
>
> Thanks to you and everyone else for the help. The "s.split('\x00',
> 1)[0] " solved the problem.

And a probably faster version: s[:s.index('\x00')]

George



From bjourne at gmail.com  Mon Sep  4 20:53:17 2006
From: bjourne at gmail.com (=?ISO-8859-1?Q?BJ=F6rn_Lindqvist?=)
Date: Tue, 5 Sep 2006 02:53:17 +0200
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <740c3aec0609041753o917316bge850222b9d1a2b97@mail.gmail.com>

> I have a reference to certain objects. What is the most pythonic way to
> test for valid reference:
>
>         if obj:
>
>         if None!=obs:
>
>         if obj is not None:

The third way is the most precise way. It is often used in combination
with default arguments.

def __init__(self, amount = None):
    if amount is not None:
        self.amount = amount
    else:
        self.amount = self.calc_amount()

However, the first way is shorter and more concise. It really depends
on what obj is supposed to be and where you get obj from. If it is a
database and obj is an instance:

obj = db.get("sometable", id = 33)

(assuming db.get returns None if the object isn't found) Then "if
obj:" clearly is the right test. In general, I think "If obj:" is the
right answer, except when dealing with default arguments. And you must
be aware that some objects, like 0, [] or {} evaluate to False -- it
is possible that that could create some subtle bugs.

-- 
mvh Bj?rn


From christian at dowski.com  Mon Sep 25 20:30:46 2006
From: christian at dowski.com (Christian)
Date: 25 Sep 2006 17:30:46 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159230645.917779.319770@m73g2000cwd.googlegroups.com>

walterbyrd wrote:
> If so, I doubt there are many.
>
> I wonder why that is?

Previously I used Python while earning a living working in IT at a
college.  Currently it is putting food on the table via contract jobs.
I imagine there are "many" out there like me, doing just that.

Christian
http://www.dowski.com



From dale at riverhall.nospam.co.uk  Tue Sep 12 12:48:28 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Tue, 12 Sep 2006 17:48:28 +0100
Subject: Inter process signalling
Message-ID: <GxBNg.6611$Dj4.5066@fe11.usenetserver.com>

In Linux this is easy with 'signal' and 'kill' but how can I get one Python
process to signal another (possibly running as a service)? 

All I need is a simple prod with no other data being sent and none being
returned - except that the signal was delivered.

Receiving a signal should generate an interrupt. I'm not looking for a
solution the involves polling.

Thanks
-- 
Dale Strickland-Clark
Riverhall Systems www.riverhall.co.uk



From kode4u at gmail.com  Wed Sep 27 13:16:01 2006
From: kode4u at gmail.com (kode4u)
Date: 27 Sep 2006 10:16:01 -0700
Subject: How to get ip setting, dynamic ip or static ip?
In-Reply-To: <1158892362_9487@sp6iad.superfeed.net>
References: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>
	<1158892362_9487@sp6iad.superfeed.net>
Message-ID: <1159377361.763313.179530@m7g2000cwm.googlegroups.com>

There are some errors in result:
>>> import win32com.client
>>> wmi=win32com.client.GetObject('winmgmts:')
>>> adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
>>> for adapter in adapters:
...     print adapter.Properties_['Caption'],
adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']
...
[00000001] Realtek RTL8139 Family PCI Fast Ethernet NIC True
(u'169.254.52.213',)
Traceback (most recent call last):
  File "<input>", line 2, in <module>
  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py", line
187, in __str__
    return str(self.__call__())
UnicodeEncodeError: 'ascii' codec can't encode characters in position
15-19: ordinal not in range(128)

How to deal with it?



Roger Upole wrote:
> "kode4u" <kode4u at gmail.com> wrote in message news:1158844868.766047.73270 at b28g2000cwb.googlegroups.com...
> > How to use python get my windows box's ip setting type? Dynamic ip, or
> > static ip?
> >
> > If it's static ip, what's the exact value?
> >
>
> You can use WMI to list properties of your network adapter(s):
> import win32com.client
> wmi=win32com.client.GetObject('winmgmts:')
> adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
> for adapter in adapters:
>     print adapter.Properties_['Caption'], adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']
>
>        Roger
>
>
>
>
> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
> ---= East/West-Coast Server Farms - Total Privacy via Encryption =---



From dclist at gmail.com  Mon Sep  4 13:01:55 2006
From: dclist at gmail.com (dclist at gmail.com)
Date: 4 Sep 2006 10:01:55 -0700
Subject: Using "Content-Disposition" in HTTP download
Message-ID: <1157389315.923598.305720@i3g2000cwc.googlegroups.com>

What is the correct way to download a file through HTTP and save it to
the file name suggested by "Content-Disposition"?

I would use urlretrieve but I'm not sure how to obtain the file name
through the HTTP headers without downloading the body (e.g.
urlopen(url).info()).



From dummy at dummy.nl  Wed Sep 13 16:05:49 2006
From: dummy at dummy.nl (Cecil Westerhof)
Date: Wed, 13 Sep 2006 22:05:49 +0200
Subject: urllib en https
Message-ID: <4508649d$0$4521$e4fe514c@news.xs4all.nl>

Something went wrong with my last post. So, again:

I have a strange problem. I wrote a script that uses urllib.urlopen to fetch
a page through https. In Python 2.2.2 this works without a problem. But
when I use the script in Python?2.4.1 (which is more recent)?I?get:

Traceback (most recent call last):
??File?"<stdin>",?line?1,?in??
??File?"/usr/local/lib/python2.4/urllib.py",?line?79,?in?urlopen
????return?opener.open(url,?data)
??File?"/usr/local/lib/python2.4/urllib.py",?line?177,?in?open
????return?self.open_unknown(fullurl,?data)
??File?"/usr/local/lib/python2.4/urllib.py",?line?189,?in?open_unknown
????raise?IOError,?('url?error',?'unknown?url?type',?type)
IOError: [Errno url error] unknown url type: 'https'

What is happening here? And how can I solve this?



From bkovitz at acm.org  Wed Sep  6 11:10:12 2006
From: bkovitz at acm.org (Ben Kovitz)
Date: 6 Sep 2006 08:10:12 -0700
Subject: Tkinter bus error right away
Message-ID: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>

Hi, I just tried to run Tkinter on OS X 10.3.9 under Python 2.4.3, and
I'm getting a bus error as soon as I call Tk().  Googling has turned up
info other Tkinter bus errors, but not this one that occurs right away,
before doing anything fancy.

Tk/Tcl is definitely installed on my computer, as verified by running
"wish" and seeing the window come up.  "info patchlevel" returns 8.4.5.

Here's the tail of the output from python -v:


Python 2.4.3 (#1, Mar 30 2006, 11:02:15)
[GCC 4.0.1 (Apple Computer, Inc. build 5250)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
import readline # dynamically loaded from
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-dynload/readline.so
>>> from Tkinter import *
#
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-tk/Tkinter.pyc
has bad mtime
import Tkinter # from
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-tk/Tkinter.py
# wrote
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-tk/Tkinter.pyc
import _tkinter # dynamically loaded from
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-dynload/_tkinter.so
#
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-tk/Tkconstants.pyc
matches
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-tk/Tkconstants.py
import Tkconstants # precompiled from
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-tk/Tkconstants.pyc
import MacOS # dynamically loaded from
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/lib-dynload/MacOS.so
>>> root = Tk()
Bus error


Any suggestions?  Is this an Aqua vs. X11 issue?

Many thanks,

Ben Kovitz



From mcfletch at vrplumber.com  Sat Sep  2 09:40:06 2006
From: mcfletch at vrplumber.com (Mike C. Fletcher)
Date: Sat, 02 Sep 2006 09:40:06 -0400
Subject: simpleparse parsing problem
In-Reply-To: <44F8E9A9.2000504@ilm.com>
References: <44F8E9A9.2000504@ilm.com>
Message-ID: <44F989B6.90804@vrplumber.com>

David Hirschfield wrote:
> Anyone out there use simpleparse? If so, I have a problem that I can't 
> seem to solve...I need to be able to parse this line:
>
> """Cen2 = Cen(OUT, "Cep", "ies", wh, 544, (wh/ht));"""
>   
...
> expr        := termlist, ( operator, termlist )+
>   
I *believe* you wanted that to be *, not +

Best way to write a SimpleParse grammar is from the ground up, using 
test cases, so test each thing you think you're parsing. Makes it much 
easier to spot situations like this.

HTH,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com



From mahall at ncsa.uiuc.edu  Wed Sep  6 16:27:13 2006
From: mahall at ncsa.uiuc.edu (Matteo)
Date: 6 Sep 2006 13:27:13 -0700
Subject: Scientific computing and data visualization.
In-Reply-To: <mailman.85.1157564525.5279.python-list@python.org>
References: <mailman.85.1157564525.5279.python-list@python.org>
Message-ID: <1157574433.664189.217960@m73g2000cwd.googlegroups.com>


Fie Pye wrote:
> Hallo
>
> 	I would like to have a high class open source tools for scientific computing and powerful 2D and 3D data visualisation. Therefore I chose python, numpy and scipy as a base. Now I am in search for a visualisation tool. I tried matplotlib and py_opendx with OpenDx. OpenDx seems to me very good but the project py_opendx looks like closed. After py_opendx instalation and subsequent testing I got an error that needs discussion with author or an experienced user. Unfortunately a mail to author returned as undeliverable.
>
> 	Does anybody now about suitable visualisation tool?
>
> 	Does anybody have an experience with OpenDx and py_opendx instalation?
>
> 	Thanks for your response.
>
> 	fiepye

As another poster pointed out below, VTK is a very strong vis tool. It
is actively supported and has bindings to several languages (C++,
Python, Java, and Tcl at last count). I have used the combination of
python and VTK together to produce many scientific visualizations,
including production quality animations (Usually, I use Python/VTK to
generate isosurfaces or the like, and import the resulting geometry
data into Maya or another high-quality renderer)

One hurdle to overcome is transferring array data from Numeric/Numpy
into VTK. I have a sort of ad-hoc method to do that (mainly for volume
data). If anyone knows of any elegant solution, or a module to ease the
pain, I'd like to hear about it.

If you are working with NetCDF files, you may wish to add
ScientificPython (distinct from SciPy) to your toolset. It has a very
nice NetCDF interface. Unfortunately, it is ancient, and you would have
to install Numeric Python (ancestor to NumPy). However, it is easy to
convert Numeric arrays into Numpy arrays:
>>> my_numpy_array=numpy.array(my_numeric_array)


-matt



From oliphant.travis at ieee.org  Tue Sep 12 22:43:53 2006
From: oliphant.travis at ieee.org (Travis E. Oliphant)
Date: Tue, 12 Sep 2006 20:43:53 -0600
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>
References: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>
Message-ID: <ee7r8b$lkr$1@sea.gmane.org>

Brendon Towle wrote:
> I need to simulate scenarios like the following: "You have a deck of  
> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,  
> replace it, and repeat N times."
> 

Thinking about the problem as drawing sample froms a discrete 
distribution defined by the population might help.

For example, in SciPy you can define your own discrete random variable:

var = scipy.stats.rv_discrete(name='sample', 
values=([0,1,2],[3/10.,5/10.,2/10.]))

Then

var.rvs(size=10000)

would quickly return an array of "draws"

If you didn't want to install SciPy, but were willing to install NumPy, 
then the crux of the algorithm is to generate an entire array of uniform 
random variables:  numpy.random.rand(count) and then map them through 
the inverse cumulative distribution function to generate your samples. 
  The inverse cumulative distribution function is just a series of steps 
whose width depends on the probablity distribution.

Thus, the population defines the draw boundaries.  To make it easy, just 
multiply the uniform random number by the total number of cards and then 
the boundaries are on the integers of the number of each kind of card.

Here is an implementation.  I find this version to be 2x - 5x faster 
depending on how many draws are used.


import numpy as N

def randomDrawing_N(count, population):
     probs = [x[0] for x in population]
     res = [[0, item[1]] for item in population]
     nums = N.random.rand(count)
     cprobs = N.cumsum([0]+probs)
     nums *= cprobs[-1]
     for k, val in enumerate(probs):
         res[k][0] += ((nums > cprobs[k]) & (nums < cprobs[k+1])).sum()
     return res


-Travis Oliphant



From george.sakkis at gmail.com  Sun Sep 24 00:40:58 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 23 Sep 2006 21:40:58 -0700
Subject: What is the best way to "get" a web page?
In-Reply-To: <1159069783.563618.80380@k70g2000cwa.googlegroups.com>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<92nRg.4760$nX4.2074@tornado.texas.rr.com>
	<1159069783.563618.80380@k70g2000cwa.googlegroups.com>
Message-ID: <1159072858.576765.9020@k70g2000cwa.googlegroups.com>

Pete wrote:

> The file "temp.html" is definitely different than the first run, but
> still not anything close to www.python.org . Any other suggestions?

If you mean that the page looks different in a browser, for one thing
you have to download the css files too. Here's the relevant extract
from the main page:

<link media="screen" href="styles/screen-switcher-default.css"
type="text/css" id="screen-switcher-stylesheet" rel="stylesheet" />
<link media="scReen" href="styles/netscape4.css" type="text/css"
rel="stylesheet" />
<link media="print" href="styles/print.css" type="text/css"
rel="stylesheet" />
<link media="screen" href="styles/largestyles.css" type="text/css"
rel="alternate stylesheet" title="large text" />
<link media="screen" href="styles/defaultfonts.css" type="text/css"
rel="alternate stylesheet" title="default fonts" />

You may either hardcode the urls of the css files, or parse the page,
extract the css links and normalize them to absolute urls. The first is
simpler but the second is more robust, in case a new css is added or an
existing one is renamed or removed.

George



From http  Wed Sep  6 02:50:49 2006
From: http (Paul Rubin)
Date: 05 Sep 2006 23:50:49 -0700
Subject: Dice gen and analyser script for RPGs: comments sought
References: <050920060217482624%richardb@sailmaker.co.nospam.uk>
Message-ID: <7xac5d32uu.fsf@ruckus.brouhaha.com>

Richard Buckle <richardb at sailmaker.co.nospam.uk> writes:
> Comments, insights and overall evaluations are especially welcomed re:
> * Cleanliness of design
> * Pythonicity of design
> * Pythonicity of code
> * Efficiency of code
> * Quality of docstrings
> * Conformance with modern docstring standards
> * Conformance with coding standards e.g. PEP 8
> 
> I look forward to receiving your comments and criticisms.

I looked at this for a minute and found it carefully written but
somewhat hard to understand.  I think it's maybe more OOP-y than
Python programs usually are; perhaps it's Java-like.  There are some
efficiency issues that would be serious if the code were being used on
large problems, but probably no big deal for "3D6" or the like.  In
particular, you call histogram.numSamples() in a bunch of places and
each call results in scanning through the dict.  You might want to
cache this value in the histogram instance.  Making histogram a
subclass of dict also seems a little bit peculiar.

You might find it more in the functional programming spirit to use
gencomps rather than listcomps in a few places:

        return sum([freq * val for val, freq in self.items()])
becomes
        return sum((freq * val) for val, freq in self.iteritems())

etc.


From asterocean at gmail.com  Thu Sep 21 00:32:07 2006
From: asterocean at gmail.com (astarocean)
Date: 20 Sep 2006 21:32:07 -0700
Subject: i just made a website(ztooo.com) using zope & jsonserver
Message-ID: <1158813127.781282.176220@m73g2000cwd.googlegroups.com>

ztooo.com come up on 2006-09-19, made with zope & jsonserver,
have a look?
you may need zh_CN.utf8 charsets installed for view normaly

thanks reebalazs for his brilliant idea
thanks zope



From fredrik at pythonware.com  Thu Sep 21 04:01:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 21 Sep 2006 10:01:32 +0200
Subject: new string method in 2.5 (partition)
In-Reply-To: <4511845b$0$4523$e4fe514c@news.xs4all.nl>
References: <40XPg.6$1n3.149@news.tufts.edu>	<4510425e$0$12250$636a55ce@news.free.fr>	<mailman.299.1158709371.10491.python-list@python.org>
	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
Message-ID: <eetgss$pbr$1@sea.gmane.org>

Irmen de Jong wrote:

> Because the result of partition is a non mutable tuple type containing
> three substrings of the original string, is it perhaps also the case
> that partition works without allocating extra memory for 3 new string
> objects and copying the substrings into them?

nope.  the core string type doesn't support sharing, and given the 
typical use cases for partition, I doubt it would be more efficient
than actually creating the new strings.

(note that partition reuses the original string and the separator,
where possible)

(and yes, you're not the first one who thought of this.  check the 
python-dev archives from May this year for more background).

</F>



From python at hope.cz  Wed Sep 20 12:01:21 2006
From: python at hope.cz (Lad)
Date: 20 Sep 2006 09:01:21 -0700
Subject: Is it possible to change a picture resolution with Python?
In-Reply-To: <1158766770.656305.91530@h48g2000cwc.googlegroups.com>
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
Message-ID: <1158768080.415936.41750@i3g2000cwc.googlegroups.com>

from
> image:
> http://www.pythonware.com/library/pil/handbook/image.htm
>
> This is some example code:
>
> from PIL import Image
> im = Image.open("1.jpg")
> nx, ny = im.size
> im2 = im.resize((int(nx*1.5), int(ny*1.5)), Image.BICUBIC)
> im2.save("2.png")
>
> Bye,
 bearophile,
Thank you for your reply.
But the above code increases size only , but not DPI resolutions(
vertical nad horizontal).I need  a higher  vertical and horisontal
resolutions.
Any idea how to do that?
Thank you



From johnjsal at NOSPAMgmail.com  Wed Sep 27 14:33:13 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 18:33:13 GMT
Subject: ElementTree and proper identation?
In-Reply-To: <mailman.821.1159380838.10491.python-list@python.org>
References: <iYySg.34$1n3.469@news.tufts.edu> <r4zSg.35$1n3.414@news.tufts.edu>
	<mailman.821.1159380838.10491.python-list@python.org>
Message-ID: <JtzSg.37$1n3.434@news.tufts.edu>

Fredrik Lundh wrote:
> John Salerno wrote:
> 
>> Well, further research reveals that this function isn't available yet 
>> in any version.
> 
> what keeps you from using the source code on the page you're talking 
> about ?
> 
> </F>
> 

Yeah, actually I just gave this a try but I couldn't figure out where 
the code needed to go or how to call the function. I tried creating an 
Element with a few SubElements, then I did:

print >> filename, indent(root)

But that only wrote the value "None" into the file.


From duncan.booth at invalid.invalid  Thu Sep 21 09:13:30 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 21 Sep 2006 13:13:30 GMT
Subject: Decorator cllass hides docstring from doctest?
References: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>
Message-ID: <Xns984590B9165E9duncanbooth@127.0.0.1>

berthold at despammed.com (Berthold =?iso-8859-15?Q?H=F6llmann?=) wrote:

> Saving the following code to a file and running the code through
> python does not give the expected error. disableling the "@decor" line
> leads to the expected error message. Is this a bug or an overseen
> feature?
> 
It's a problem with your implementation of the decorator. In fact it is two 
problems: the decorated 'f' is a class instance so doctest ignores it, and 
it doesn't have a docstring so doctest ignores it.

If you rewrite the decorator so that the decorated 'f' is still a function 
and preserve the docstring then it works as you might expect. e.g.

def decor(f):
    def wrapper(*args, **kw):
        return f(*args, **kw)
    wrapper.__doc__ = f.__doc__
    wrapper.__name__ = f.__name__
    return wrapper


From http  Sun Sep 24 17:35:31 2006
From: http (Paul Rubin)
Date: 24 Sep 2006 14:35:31 -0700
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
	<7x8xk9t1mn.fsf@ruckus.brouhaha.com>
	<4nob2hFbbk5nU1@individual.net>
	<pan.2006.09.24.21.25.30.501862@net.hr>
Message-ID: <7xr6y17xss.fsf@ruckus.brouhaha.com>

NinjaZombie <ninjazombie at net.hr> writes:
> Thanks guys, but I'm a little new to this. Take a look at this very simple
> code:
> 
> import os
> print "Entering program"
> os.fork()
> while (1):
> 	pass    # some other work

Try it this way:

     import os, sys
     print "Entering program"

     if os.fork():
        sys.exit()              # parent process exits so shell returns

     while (1):                 # child process continues
            pass    # some other work


From Roberto.Bonvallet at cern.ch  Thu Sep 21 08:26:34 2006
From: Roberto.Bonvallet at cern.ch (Roberto Bonvallet)
Date: 21 Sep 2006 12:26:34 GMT
Subject: naming objects from string
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<mailman.372.1158814064.10491.python-list@python.org>
	<1158816105.593369.176280@i42g2000cwa.googlegroups.com>
Message-ID: <eeu0dq$7tn$1@sunnews.cern.ch>

manstey wrote:
[...]
> bob_apple=()
> bob_orange=()
> ..
> pete_red=()
> 
> I then populate the 9 tuples with data [...]

You cannot "populate" a tuple.  If you want to insert the values
individually, you have to use a list.  If you insert them all together,
like this:  bob_apple = (1, 2, ..., 9), you don't need to initialize
bob_apple with an empty tuple.

-- 
Roberto Bonvallet


From horpner at yahoo.com  Thu Sep  7 08:17:40 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 7 Sep 2006 14:17:40 +0200
Subject: iso creation for python backup script
References: <c5b438120609061942w7f23b5f1i18b54b30de33ccd4@mail.gmail.com>
	<edo20v$38e$1@sea.gmane.org>
	<c5b438120609062055g24e2d9fax48c40a3af4d801cf@mail.gmail.com>
	<mailman.109.1157601561.5279.python-list@python.org>
Message-ID: <slrneg03fl.1qc.horpner@FIAD06.norwich.edu>

On 2006-09-07, John Purser <jmpurser at gmail.com> wrote:
> Windows itself (2000+) comes with it's own backup solution that
> might even support burning to disk.  I haven't used MS in a
> year or so but it might be worth looking at.

That worked OK for me until the backup solution bundled with XP
turned out to be incompatible with the one bundled with 95. I had
to get a third-party software solution to access my old backups.

You might as well start with a third-party solution to begin
with.

-- 
Neil Cerutti


From jstroud at mbi.ucla.edu  Mon Sep 11 17:38:54 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 11 Sep 2006 21:38:54 GMT
Subject: Simple regex with whitespaces
In-Reply-To: <TveNg.17034$o42.4177@tornado.texas.rr.com>
References: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>
	<TveNg.17034$o42.4177@tornado.texas.rr.com>
Message-ID: <OHkNg.273$6S3.53@newssvr25.news.prodigy.net>

Paul McGuire wrote:
> <mathieu.malaterre at gmail.com> wrote in message 
> news:1157945804.805624.32620 at p79g2000cwp.googlegroups.com...
> 
>>Hello,
>>
>> I cannot figure out a way to find a regular expression that would
>>match one and only one of these two strings:
[clip]
>>Any suggestion ? Thanks a bunch !
>>Mathieu
>>
> 
> A pyparsing approach is not as terse as regexp's, but it's not terribly long 
> either.

To second Paul's suggestion, usually, if the regex is not immediately 
obvious, its probably better to look into parsing modules, pyparsing 
being one of the most accessible modules (to me, anyways)--and well 
worth learning.

However, in complicated applications, regex is usually still fun and 
valuable as an intellectual exercise.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From gagsl-py at yahoo.com.ar  Thu Sep 28 01:38:24 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 02:38:24 -0300
Subject: Auto color selection PIL
In-Reply-To: <451b0c80$0$25785$4d3efbfe@news.sover.net>
References: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>
	<451b0c80$0$25785$4d3efbfe@news.sover.net>
Message-ID: <7.0.1.0.0.20060928023439.03934ad0@yahoo.com.ar>

At Wednesday 27/9/2006 20:43, Leif K-Brooks wrote:

> > I'm trying to plot some points in an image.  Each point has an
> > associating type and I'd like to have different colors (preferrably of
> > high contrast) for different types.  The number of types in the data
> > file is unknown a priori.  Is there a way to do this at runtime?
>
>If you don't know how many colors are needed even at run time, this code
>might be helpful. But it generates colors that look similar pretty
>quickly, so I wouldn't use it unless you have to. (Anyone know of a
>better algorithm for this?)

Try this. It first chooses 0, 1/2, then 1/4, 3/4, then */8...
It's the best I could make if you don't know the number of colors 
beforehand. If you *do* know how many colors, your previous response is OK.


from colorsys import hsv_to_rgb

def hues():
     denom = 1
     yield 0
     while True:
         num = 1
         while num<denom:
             yield float(num)/denom
             num += 2
         denom += denom

def colors():
      for hue in hues():
          r, g, b = hsv_to_rgb(hue, 1.0, 1.0)
          yield int(r*255), int(g*255), int(b*255)




Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From michele.simionato at gmail.com  Fri Sep  1 07:09:11 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 1 Sep 2006 04:09:11 -0700
Subject: a new object definition
In-Reply-To: <ed93bq$r42$1@trompette.imag.fr>
References: <ed8rce$ikn$1@trompette.imag.fr>
	<1157100926.420077.229900@p79g2000cwp.googlegroups.com>
	<ed93bq$r42$1@trompette.imag.fr>
Message-ID: <1157108950.928259.316080@e3g2000cwe.googlegroups.com>

Sylvain Ferriol wrote:
> Michele Simionato a ?crit :
> >
> > See http://www.python.org/dev/peps/pep-0359  (already rejected by
> > Guido).
> >
> i do not understand the withdrawal note, what do "different level" mean ?
> do you have an example or is it python core implemantation problem ?

I asked Guido in person at EuroPython. He said the syntax didn't look
"right" to him. It is as simple as that.

  Michele Simionato



From steve at REMOVEME.cybersource.com.au  Thu Sep 14 23:07:45 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Fri, 15 Sep 2006 13:07:45 +1000
Subject: Pre-defining an action to take when an expected error occurs
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
Message-ID: <pan.2006.09.15.03.07.44.192546@REMOVEME.cybersource.com.au>

On Thu, 14 Sep 2006 19:40:35 -0700, Tempo wrote:

> Hello. I am getting the error that is displayed below, and I know
> exactly why it occurs. I posted some of my program's code below, and if
> you look at it you will see that the error terminates the program
> pre-maturely. Becasue of this pre-mature termination, the program is
> not able to execute it's final line of code, which is a very important
> line. The last line saves the Excel spreadsheet. So is there a way to
> make sure the last line executes? 

Two methods:

(1) Fix the bug so the program no longer terminates early. You are getting
an IndexError "list index out of range", so fix the program so it no
longer tries to access beyond the end of the list.

I'm guessing that your error is right at the beginning of the loop. You
say:

for rx in range(sh.nrows):
    rx = rx +1

Why are you adding one to the loop variable? That's equivalent to:

for rx in range(1, sh.nrows + 1)

which probably means it skips row 0 and tries to access one row past the
end of sh. If all you want to do is skip row 0, do this instead:

for rx in range(1, sh.nrows)


(2) Stick a band-aid over the error with a try...except block, and hope
you aren't covering up other errors as well. While we're at it, let's
refactor the code a little bit...

# untested
def write_row(rx, sh, end, ws):
    u = str(sh.cell_value(rx, 0))
    if u != end:
        soup = BeautifulSoup(urllib2.urlopen(u))
        p = str(soup.findAll('span', "sale"))
        for row in re.findall('\$\d+\.\d\d', p):
            ws.write(r,0,row)  # what's r? did you mean rx?


Now call this:

for rx in range(sh.nrows):
    rx += 1 # but see my comments above...
    try:
        write_row(rx, sh, end, ws)
    except IndexError:
        pass
w.save('price_list.xls')



-- 
Steven D'Aprano 



From maxerickson at gmail.com  Wed Sep 20 18:52:29 2006
From: maxerickson at gmail.com (Max Erickson)
Date: Wed, 20 Sep 2006 22:52:29 +0000 (UTC)
Subject: Is it possible to change a picture resolution with Python?
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
	<1158768080.415936.41750@i3g2000cwc.googlegroups.com>
Message-ID: <Xns9844BFFBFE3F3maxericksongmailcom@80.91.229.5>

"Lad" <python at hope.cz> wrote:

> from
>> image:
>> http://www.pythonware.com/library/pil/handbook/image.htm
>>
>> This is some example code:
>>
>> from PIL import Image
>> im = Image.open("1.jpg")
>> nx, ny = im.size
>> im2 = im.resize((int(nx*1.5), int(ny*1.5)), Image.BICUBIC)
>> im2.save("2.png")
>>
>> Bye,
>  bearophile,
> Thank you for your reply.
> But the above code increases size only , but not DPI resolutions(
> vertical nad horizontal).I need  a higher  vertical and horisontal
> resolutions.
> Any idea how to do that?
> Thank you
> 

If you just want to change the dpi flag that some software uses to 
interpret the size of the image when rendering it, something like:

im.save('c:/tmp/out.jpg', dpi=(100,100))

might work. You can get lots of info on why this doesn't really change 
the resolution of the image from google.

max



From luis_lupe2 at netvisao.pt  Fri Sep 15 17:03:56 2006
From: luis_lupe2 at netvisao.pt (Luis P. Mendes)
Date: Fri, 15 Sep 2006 22:03:56 +0100
Subject: ancestor class' __init__ doesn't call other methods
In-Reply-To: <1158349589.103757.126760@b28g2000cwb.googlegroups.com>
References: <450af8d6$0$75041$14726298@news.sunsite.dk>
	<1158349589.103757.126760@b28g2000cwb.googlegroups.com>
Message-ID: <450b153c$0$75037$14726298@news.sunsite.dk>

Rob De Almeida escreveu:
> Luis P. Mendes wrote:
>> Method a() is not called.  Why is this?  What is the best option to
>> solve this? Have Cotacoes returning values and not to be an ancestor
>> class of CruzaEmas?
> 
> It works for me, after rearranging your code a little bit:
> 
Ok, thanks. I already know where the problem was.

The a() method was just an example.  The real problem was elsewhere.

I had two methods with the same name, one at Cotacoes (the ancestor),
another one at CruzaEmas.

The method called at the __init__ of the ancestor was the one of the
daughter class, and not the one of the ancestor's, as I was expecting.
After changing the name of the latter, everything seems to be fine.

Luis P. Mendes


From horpner at yahoo.com  Tue Sep 12 10:06:27 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 12 Sep 2006 16:06:27 +0200
Subject: I wish I could add docstrings to vars.
References: <slrnegdcem.epp.matt@mwilson.umlcoop.net>
Message-ID: <slrnegdfne.13s.horpner@FIAD06.norwich.edu>

On 2006-09-12, Matthew Wilson <matt at tplus1.com> wrote:
> I build a lot of elaborate dictionaries in my interpreter, and
> then I forget exactly how they work.  It would be really nice
> to be able to add notes to the dictionary.
>
> Is there some way to do this now?

Writing a thin wrapper around the dictionary might be beneficial,
and would also furnish a place for the docstrings. Actually, the
wrapper would probably prevent you from needing the docstring
very often. ;)

-- 
Neil Cerutti
Eddie Robinson is about one word: winning and losing. --Eddie
Robinson's agent Paul Collier


From rhymes at myself.com  Thu Sep  7 15:17:19 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 7 Sep 2006 21:17:19 +0200
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
Message-ID: <1hlbce6.wzzlyx1d49l4wN%rhymes@myself.com>

Jason <tenax.raccoon at gmail.com> wrote:
> I don't know about MinGW, but you can get the Microsoft compilers by
> installing Visual C++ 2005 Express.  I'm guessing the old toolkit is
> deprecated.  While you must register each Visual Studio Express module
> that you download, I don't think the actual command-line tools are
> encumbered.
> 
> Why not try it out and let us know how it goes?
> 
> (Visual Studio 2005 Express:
> http://msdn.microsoft.com/vstudio/express/)

Because you can't use it to distribute extensions. Python is compiled
against the 2003 version and distutils will simply don't let you compile
with the 2005 version. If you manage to hack distutils to use the 2005
anyway it won't work for sure outside your home box.

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From steve at holdenweb.com  Mon Sep 18 11:16:12 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 18 Sep 2006 11:16:12 -0400
Subject: Python programs always open source?
In-Reply-To: <450eb358$0$19900$4d3efbfe@news.sover.net>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
Message-ID: <eemd6e$ku6$1@sea.gmane.org>

Leif K-Brooks wrote:
> Ben Finney wrote:
> 
>>So long as you're not distributing some or all of Python itself, or a
>>derivative work, the license for Python has no legal effect on what
>>license you choose for your own work.
> 
> 
> How many Python programs use nothing from the standard library?

That doesn't matter either. The required copyright statements are 
included in the Python interpreter. There is no reason to fear 
distributing Python as a part of either open source or proprietary 
works, and Guido framed the original license to allow precisely such 
uses. Later versions have retained the same spirit.

The official license doesn't take a lot of understanding or legalese. 
Try it:

   http://www.python.org/download/releases/2.4.2/license/

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Tue Sep 26 03:06:51 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 09:06:51 +0200
Subject: QuoteSQL
In-Reply-To: <efaj26$qna$1@sea.gmane.org>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<mailman.560.1159188345.10491.python-list@python.org>	<ef9nmi$snj$2@lust.ihug.co.nz>
	<efaj26$qna$1@sea.gmane.org>
Message-ID: <efajib$sd1$1@sea.gmane.org>

Steve Holden wrote:

> Ah, so your quoting function will deduce the context in which arguments 
> intended for parameter substitution in the query will be used? Or are 
> you suggesting that it's unwise to rely on autoquoted parameters? That 
> could have a serious impact on the efficiency of some repeated queries.

"but people wouldn't use Python if they cared about efficiency"

</F>



From apardon at forel.vub.ac.be  Wed Sep 27 08:15:08 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 27 Sep 2006 12:15:08 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
Message-ID: <slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-27, Peter Otten <__peter__ at web.de> wrote:
> Antoon Pardon wrote:
>
>> I had written my own module, which works similarly but
>> is somewhat extended. Here is an example of how it can
>> be used and how I would like to use it but get stuck.
>> 
>> from extreme import Top
>>>>> Top
>> Top
>>>>> Top + 1
>> Top
>>>>> Top - 30
>> Top
>>>>> Top > 1e99
>> True
>>>>> lst = range(10)
>>>>> lst[:Top]
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>> TypeError: slice indices must be integers or None
>> 
>> So this is where I am stuck. I need this Top value in
>> a context where it can be used as a start or stop value
>> in a slice. My idea was that since a stop value greater
>> than the length of lst in this context would simply return
>> a copy of lst, using Top in such a way should behave so
>> too. However I don't see a way of doing that.
>> 
>> So can someone provide ideas to get this behaviour?
>
>>>> import sys
>>>> class Top(object):
> ...     def __index__(self):
> ...             return sys.maxint
> ...
>>>> Top = Top()
>>>> range(5)[:Top]
> [0, 1, 2, 3, 4]
>
> This can of course fail in many interesting ways...

To begin with this already fails:

>>> for i in xrange(Top):
...   print i
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: an integer is required


What bothers me a bit about the rejection of PEP 326 is that one of the
reasons stated is:

  http://mail.python.org/pipermail/python-dev/2004-January/042306.html

  - it is easily implemented when you really need it

Well I thought it would simplify some things for me, so I tried an
implementation and then found that some of the things that I would
want to do with it wont work. So the "is easily implemented" bit
seems not to be correct.

-- 
Antoon Pardon


From flyingisfun1217 at gmail.com  Thu Sep 28 20:13:45 2006
From: flyingisfun1217 at gmail.com (flyingisfun1217 at gmail.com)
Date: 28 Sep 2006 17:13:45 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159419097.556600.160750@k70g2000cwa.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<451A314F.3060703@isy.liu.se>
	<mailman.815.1159378067.10491.python-list@python.org>
	<1159395485.824735.319090@b28g2000cwb.googlegroups.com>
	<1159419097.556600.160750@k70g2000cwa.googlegroups.com>
Message-ID: <1159488825.144496.86610@c28g2000cwb.googlegroups.com>

> Since the examples out of An Introduction to Tkinter work, what else
> could be useful to you is hard to guess.


Basically, any kind of program using Tkinter, and has some sort of
usefulness

btw, I DO look at signatures believe it or not, and already (as in
before I even read this post) I have come across a very good site :)

Tanner



From fredrik at pythonware.com  Fri Sep  1 04:16:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 10:16:49 +0200
Subject: GC and security
References: <44F61EEB.8040207@optonline.net><7x4pvtpxnc.fsf@ruckus.brouhaha.com><44F63356.6060400@optonline.net><7xlkp5h91p.fsf@ruckus.brouhaha.com>
	<iaDJg.9$062.6@newsfe10.lga><7xy7t4ss1y.fsf@ruckus.brouhaha.com><dCIJg.970$X26.742@newsfe09.lga>
	<wYOJg.12854$Qf.10941@newsread2.news.pas.earthlink.net>
Message-ID: <ed8q9h$35f$1@sea.gmane.org>

Dennis Lee Bieber wrote:

> This is after they'd made an 11x14 enlargement of the "stolen"
> print, cleaned it up with a marker, reduced to life size, and etched
> onto printed circuit board to form a mold for making a latex "skin".
> Which, BTW, also fooled the lock.

    http://www.diva-portal.org/liu/abstract.xsql?dbid=2397

    Sandstr?m, Marie: Liveness Detection in Fingerprint Recognition Systems

    "Nine different systems were tested at the CeBIT trade fair in Germany and
    all were deceived. Three other different systems were put up against more
    extensive tests with three different subjects. All systems were circumvented
    with all subjects' artificial fingerprints, but with varying results."

</F> 





From andi.clemens at gmx.net  Sun Sep 17 08:30:42 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Sun, 17 Sep 2006 14:30:42 +0200
Subject: matplotlib: TypeError: a float is required
In-Reply-To: <eejesq$guv$1@online.de>
References: <eejesq$guv$1@online.de>
Message-ID: <eejf42$guv$2@online.de>

btw, these are the versions I'm using (Archlinux):

Python: 2.4.3 (python-2.4.3-3)
matplotlib: 0.87.4 (python-matplotlib-0.87.4-1)
PyGTK: 2.8.6 (pygtk-2.8.6-3)

Andi


Andi Clemens wrote:
> Hi,
> 
> everytime I try to plot a bar with matplotlib I get the following error 
> message:
> Traceback (most recent call last):
>   File "bar_stacked.py", line 13, in ?
>     p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
>   File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 
> 1641, in bar
>     ret =  gca().bar(*args, **kwargs)
>   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 2485, 
> in bar
>     xerr = asarray([xerr]*nbars, Float)
>   File "/usr/lib/python2.4/site-packages/Numeric/Numeric.py", line 134, 
> in asarray
>     return multiarray.array(a, typecode, copy=0, savespace=savespace)
> TypeError: a float is required
> 
> 
> So I guess it has something to do with Numeric.py, but I can't figure 
> out what the problem is. I tried to google but found nothing...
> 
> Anyone has the same problem? I can plot all kinds of graphics with 
> matplotlib, but the only type I'm interested in (bars) will not work.
> 
> I tried the examples coming with matplotlib, but even those don't work.
> 
> Here is the example code which produces the above error:
> #!/usr/bin/env python
> # a stacked bar plot with errorbars
> from pylab import *
> 
> N = 5
> menMeans   = (20, 35, 30, 35, 27)
> womenMeans = (25, 32, 34, 20, 25)
> menStd     = (2, 3, 4, 1, 2)
> womenStd   = (3, 5, 2, 3, 3)
> ind = arange(N)    # the x locations for the groups
> width = 0.35       # the width of the bars: can also be len(x) sequence
> 
> p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
> p2 = bar(ind, womenMeans, width, color='y',
>          bottom=menMeans, yerr=menStd)
> 
> ylabel('Scores')
> title('Scores by group and gender')
> xticks(ind+width/2., ('G1', 'G2', 'G3', 'G4', 'G5') )
> yticks(arange(0,81,10))
> legend( (p1[0], p2[0]), ('Men', 'Women') )
> 
> show()
> 
> 
> Anyone has matplotlib installed and gets the same error?
> I need to create some charts for a project I do at work, so maybe there 
> are other modules out there creating charts??
> 
> Andi
> 

-- 
homepage: http://www.the-grudge.net
ICQ: 9450091
Skype: thegrudge_2
Mozilla Thunderbird 1.5.0.5
Arch Linux


From python.list at tim.thechases.com  Tue Sep 19 15:28:30 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 19 Sep 2006 14:28:30 -0500
Subject: new string method in 2.5 (partition)
In-Reply-To: <5nXPg.7$1n3.69@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>	<1158692796.366877.275040@b28g2000cwb.googlegroups.com>
	<5nXPg.7$1n3.69@news.tufts.edu>
Message-ID: <451044DE.5060808@tim.thechases.com>

> But you raise a good point. Notice this:
> 
>  >>> s = 'hello, world, how are you'
> 
>  >>> s.split(',')
> ['hello', ' world', ' how are you']
> 
>  >>> s.partition(',')
> ('hello', ',', ' world, how are you')
> 
> split will return all substrings. partition (and rpartition) only return 
> the substrings before and after the first occurrence of the argument.

The split()/rsplit() functions do take an optional argument for 
the maximum number of splits to make, just FYI...

 >>> help("".split)
Help on built-in function split:

split(...)
     S.split([sep [,maxsplit]]) -> list of strings

     Return a list of the words in the string S, using sep as the
     delimiter string.  If maxsplit is given, at most maxsplit
     splits are done. If sep is not specified or is None, any
     whitespace string is a separator.



(as I use this on a regular basis when mashing up various text 
files in a data conversion process)

-tkc






From skip at pobox.com  Sun Sep 10 12:11:01 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sun, 10 Sep 2006 11:11:01 -0500
Subject: OT: What encoding is this?
In-Reply-To: <450424cb$0$75041$14726298@news.sunsite.dk>
References: <mailman.219.1157842005.5279.python-list@python.org>
	<XvIMg.26282$rP1.505@news-server.bigpond.net.au>
	<4503D341.2040509@v.loewis.de>
	<450424cb$0$75041$14726298@news.sunsite.dk>
Message-ID: <17668.14613.233078.389988@montanaro.dyndns.org>


I appreciate all the useful feedback on my request.  For some reason Safari
initially refused to display the page properly with iso-8859-1, and after a
bit more poking around with it eventually dropped a note to the list.  I
eventually discovered that Firefox has a much larger set of encodings to
choose from.  I don't know why Safari didn't display it properly the first
time.  It eventually did.

Skip



From fredrik at pythonware.com  Sun Sep  3 04:41:25 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 10:41:25 +0200
Subject: python loops
In-Reply-To: <intkf21gg4qbcjln2hqauavpuua5bda47t@4ax.com>
References: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>	<JcGJg.21533$ED.7604@read2.cgocable.net>	<1157051115.635459.215920@p79g2000cwp.googlegroups.com>
	<intkf21gg4qbcjln2hqauavpuua5bda47t@4ax.com>
Message-ID: <ede4fk$7av$1@sea.gmane.org>

Tim Roberts wrote:

> xrange used to be better.  As I understand it, that's no longer
 > the case.

for short ranges, range is faster in some Python versions, xrange is 
faster in some (including 2.4).  the difference is usually very small 
(the same number of objects are created in both cases).

for long ranges, especially when it's likely that you won't actually 
need all the values, xrange is better.

if you *need* a list, range is better.

in python 3.0, range will return an iterator, and xrange will disappear. 
  if you need a list in 3.0, you will have to do list(range(N)).

</F>



From jmpurser at gmail.com  Wed Sep 20 13:50:35 2006
From: jmpurser at gmail.com (John Purser)
Date: Wed, 20 Sep 2006 10:50:35 -0700
Subject: Looking for a reports module/project
Message-ID: <1158774635.5288.5.camel@localhost.localdomain>

Hello,

I'm working on a script to gather data from our servers and then present
the data as part of daily maintenance.  Pretty straight forward stuff.
However one of the limitations of an earlier design was presentation of
the data so I'm working to make this version's report much clearer.  I
hate to cut a bunch of single purpose code.  Before I wander down this
road too far I thought I'd ask if anyone else has found a good module or
project for writing simple text reports with python.

Thanks for the recommendations.

John Purser



From manstey at csu.edu.au  Thu Sep 21 00:33:56 2006
From: manstey at csu.edu.au (manstey)
Date: 20 Sep 2006 21:33:56 -0700
Subject: naming objects from string
In-Reply-To: <zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>
Message-ID: <1158813236.493366.122600@k70g2000cwa.googlegroups.com>

Hi,

But this doesn't work if I do:

a=object()
x='bob'
 locals()[x] = a

How can I do this?

James Stroud wrote:
> manstey wrote:
> > Hi,
> >
> > If I have a string, how can I give that string name to a python object,
> > such as a tuple.
> >
> > e.g.
> >
> > a = 'hello'
> > b=(1234)
> >
> > and then a function
> > name(b) = a
> >
> > which would mean:
> > hello=(1234)
> >
> > is this possible?
> >
>
> Depends on your namespace, but for the local namespace, you can use this:
>
> py> a = object()
> py> a
> <object object at 0x40077478>
> py> locals()['bob'] = a
> py> bob
> <object object at 0x40077478>
>
> A similar approach can be used for the global namespace.
>
> James
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/



From MonkeeSage at gmail.com  Thu Sep 21 05:04:02 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 21 Sep 2006 02:04:02 -0700
Subject: Evaluation of Truth Curiosity
References: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
Message-ID: <1158829442.548933.24640@m73g2000cwd.googlegroups.com>

James Stroud wrote:
> What is the logic of the former expression not evaluating to True (or
> why the latter not 1?)? Is there some logic that necessitates the first
> operand's dictating the result of the evaluation? Or is this an artefact
> of the CPython implementation?

If I understand correctly, OR'ing an int and a bool (your first
example) returns an int by coercing the bool to an int; and OR'ing two
bools (your second example) returns a bool.

Regards,
Jordan



From oripel at gmail.com  Sun Sep 10 12:10:57 2006
From: oripel at gmail.com (oripel)
Date: 10 Sep 2006 09:10:57 -0700
Subject: Function metadata (like Java annotations) in Python
In-Reply-To: <1157899030.755825.134550@i3g2000cwc.googlegroups.com>
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
	<1157879609.386406.278450@b28g2000cwb.googlegroups.com>
	<1157893527.335185.216650@e3g2000cwe.googlegroups.com>
	<1157899030.755825.134550@i3g2000cwc.googlegroups.com>
Message-ID: <1157904657.881417.152090@m79g2000cwm.googlegroups.com>

Thanks,
In Python 2.5 there are also functools.wraps and
functools.update_wrapper:
http://docs.python.org/dev/whatsnew/pep-309.html

George Sakkis wrote:
> oripel wrote:
> > Thanks Paddy - you're showing normal use of function attributes.
> > They're still hidden when wrapped by an uncooperative decorator.
>
> The decorator module may be helpful in defining cooperative decorators:
> http://www.phyast.pitt.edu/~micheles/python/documentation.html
> 
> George



From skip at pobox.com  Mon Sep 25 16:35:27 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 15:35:27 -0500
Subject: R.S.I. solutions?
In-Reply-To: <4nqrt0Fbp16mU1@uni-berlin.de>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
	<4nqrt0Fbp16mU1@uni-berlin.de>
Message-ID: <17688.15759.129342.711161@montanaro.dyndns.org>


    Diez> I bought a TouchStream keyboard and could recommend it - but
    Diez> unfortunately they are out of business.

Is this what you're referring to?

    http://www.fingerworks.com/ST_product.html

Skip


From gslindstrom at gmail.com  Tue Sep 26 07:48:59 2006
From: gslindstrom at gmail.com (gslindstrom at gmail.com)
Date: 26 Sep 2006 04:48:59 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159271339.775493.132180@i3g2000cwc.googlegroups.com>

walterbyrd wrote:
> If so, I doubt there are many.

I program full-time in Python writing systems to automate the
processing of health care claims.  Lots of database usage, lots of
objects, lots of fun to write it in python (I used to code C/C++ and
Perl).

> I wonder why that is?
Me, too.  Are you *sure* there aren't many??

--greg



From davidh at ilm.com  Tue Sep  5 16:44:00 2006
From: davidh at ilm.com (David Hirschfield)
Date: Tue, 05 Sep 2006 13:44:00 -0700
Subject: Getting text into the copy-paste buffer...
In-Reply-To: <1157483910.308073.274710@h48g2000cwc.googlegroups.com>
References: <mailman.35.1157482463.5279.python-list@python.org>
	<1157483910.308073.274710@h48g2000cwc.googlegroups.com>
Message-ID: <44FDE190.4080908@ilm.com>

This is good info...but I'm looking for the opposite direction: I want 
to place some arbitrary command output text into the clipboard, not get 
the current selection out of the clipboard.

Any help on that end?
-Dave

kdart wrote:
> David Hirschfield wrote:
>   
>> Strange request, but is there any way to get text into the linux
>> copy-paste buffer from a python script ?
>>
>> I know the standard python libraries won't have that functionality
>> (except as a side-effect, perhaps?), but is there a simple trick that
>> would do it on linux? A command line to get text into the buffer? Using
>> a gui toolkit as a proxy to get text in there?
>>     
>
> There's a utility called xclip that you can wrap with popen2 or
> something similar. I use my own proctools:
>
> 	import proctools
> 	XCLIP = proctools.which("xclip")
> 	es, arg = proctools.getstatusoutput("%s -o -selection primary" %
> (XCLIP,))
>
> "arg" has the X selection.
>
>   

-- 
Presenting:
mediocre nebula.

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From steve at holdenweb.com  Fri Sep 15 14:31:24 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 15 Sep 2006 14:31:24 -0400
Subject: UDP packets to PC behind NAT
In-Reply-To: <1158332322.661048.38360@b28g2000cwb.googlegroups.com>
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>	<12glelm8a37tp63@corp.supernews.com>
	<1158332322.661048.38360@b28g2000cwb.googlegroups.com>
Message-ID: <eeergj$cqd$1@sea.gmane.org>

Janto Dreijer wrote:
> Grant Edwards wrote:
> 
>>On 2006-09-15, Janto Dreijer <jantod at gmail.com> wrote:
> 
> ....
> 
>>>Would it be a reasonable solution to initiate a TCP connection
>>>from the client to the server and somehow (?) let the server
>>>figure out how the client is connecting? And then send UDP to
>>>client over the same (IP, port)?
>>
>>I doubt that will work unless the firewall has been
>>specifically designed to recognize that pattern of activity and
>>allow the incoming UDP packets.  I don't think most firewall
>>have default rules that allow UDP packets to tunnel back along
>>a TCP connection.
> 
> 
> Thanks for the info!
> 
> I think you may be right. I had to configure the local firewall to
> allow all connections from the server. Which kinda defeats the purpose.
> If you have control over the NAT why not just assign a dedicated port?
> 
> There might still be value in this approach, however. Even though I
> have control over the NAT I have multiple clients that might need to
> create these connections. I would need to map ports to be able to
> handle simultaneous connections.
> 
> It's Friday afternoon over here, so I may be wrong...
> 
Note that TCP and UDP port spaces are disjoint, so there's no way for 
TCP and UDP to use "the same port" - they can, however, use the same 
port number. Basically the TCP and UDP spaces have nothing to do with 
each other.

Most dynamic NAT gateways will respond to an outgoing UDP datagram by 
mapping the internal client's UDP port to a UDP port on the NAT 
gateway's external interface, and setting a converse mapping that will 
allow the server to respond, even though technically there isn't a 
"connection". The NAT table entries will typically be timed out after a 
short period of non-use.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From damian at nice.co.nz  Thu Sep 28 04:07:54 2006
From: damian at nice.co.nz (Damian)
Date: 28 Sep 2006 01:07:54 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159404746.185590.40560@e3g2000cwe.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
	<1159400418.491887.125240@m7g2000cwm.googlegroups.com>
	<1159404746.185590.40560@e3g2000cwe.googlegroups.com>
Message-ID: <1159430874.126731.113780@k70g2000cwa.googlegroups.com>

Sorted!

I installed msxml4 and then struggled for an hour or so with an
encoding error (UnicodeEncodeError: 'ascii' codec.... etc) which was
fixed by altering your code from:

return proc.output --> return proc.output.encode('utf-8')

The performance of MSXML over 4suite is substantial.
4suite: http://python.pointy.co.nz/test = 2.5s
MSXML: http://python.pointy.co.nz/test_msxml = 1.1s

I'd like to eventually break all ties with MS at some stage. It'll be
interesting to test this performance on a Linux server.

Thank you for your help.

Damian



From gagsl-py at yahoo.com.ar  Wed Sep 27 01:15:23 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 27 Sep 2006 02:15:23 -0300
Subject: Starting Win32 Service
In-Reply-To: <1159331968.764830.78640@b28g2000cwb.googlegroups.com>
References: <1159331968.764830.78640@b28g2000cwb.googlegroups.com>
Message-ID: <7.0.1.0.0.20060927021408.0387a990@yahoo.com.ar>

At Wednesday 27/9/2006 01:39, placid wrote:

>Using Tim Golden's wmi module you can get the service names
>but how do i start services that are stopped?

Surely there are fancier ways:
 >net start servicename



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 11:55:22 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 17:55:22 +0200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<4nibt5Fag01tU2@individual.net>
	<1158938755.403604.91180@d34g2000cwd.googlegroups.com>
Message-ID: <4nifbaFahdftU2@individual.net>

Saizan wrote:

> Well in boolean notation -True == False and  -False == True,
> actually you may prefer ? or a line over the term,

(I can't remember reading "-" (minus) for a standard boolean
negation operator anywhere. Even C/C++ uses "!".)

> but since there's no such operator in python I think we should
> use "-" 

Stop! What about the "not" operator? It's Python's operator for
negation.

> which is also the operator used by Bool himself in his formulation
> for negation which was 1-x. 

Boole's original formulation uses some weird mathematical things to
emulate "not", "and" and "or". Focus lies on "mathematical" here.

> Now that I think of it 1-x should work as a negation in Python,
> too, since True == 1 and False == 0, but it would be a little
> annoying to write expressions in this way. 

And "a little" unreadable ;)

Regards,


Bj?rn

-- 
BOFH excuse #445:

Browser's cookie is corrupted -- someone's been nibbling on it.



From neoedmund at gmail.com  Thu Sep  7 05:53:52 2006
From: neoedmund at gmail.com (neoedmund)
Date: 7 Sep 2006 02:53:52 -0700
Subject: help with unicode email parse
Message-ID: <1157622832.049404.219150@m73g2000cwd.googlegroups.com>

i want to get the subject from email and construct a filename with the
subject.
but tried a lot, always got error like this:
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 4:
ordinal not in range(128)


	msg = email.message_from_string( text )
	title = decode_header( msg["Subject"] )
	title= title[0][0]
	#title=title.encode("utf8")
	print title
	fn = ""+path+"/"+stamp+"-"+title+".mail"


the variable "text"  come from sth like this:
( header, msg, octets ) = a.retr( i )
text= list2txt( msg )
def list2txt( l ):
	return reduce( lambda x, y:x+"\r\n"+y, l )

anyone can help me out? thanks.



From Eric_Dexter at msn.com  Wed Sep 20 19:57:26 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 20 Sep 2006 16:57:26 -0700
Subject: newbe's re question
In-Reply-To: <mailman.341.1158774359.10491.python-list@python.org>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
	<mailman.322.1158749465.10491.python-list@python.org>
	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>
	<mailman.341.1158774359.10491.python-list@python.org>
Message-ID: <1158796645.943655.180890@i3g2000cwc.googlegroups.com>


Frederic Rentsch wrote:
> Eric_Dexter at msn.com wrote:
> > Frederic Rentsch wrote:
> >
> >> Eric_Dexter at msn.com wrote:
> >>
> >>> All I am after realy is to change this
> >>>
> >>>  reline = re.line.split('instr', '/d$')
> >>>
> >>> into something that grabs any line with instr in it take all the
> >>> numbers and then grab any comment that may or may not be at the end of
> >>> the line starting with ; until the end of the line including white
> >>> spaces..  this is a corrected version from
> >>>
> >>> http://python-forum.org/py/viewtopic.php?t=1703
> >>>
> >>> thanks in advance the hole routine is down below..
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> [code]
> >>> def extractCsdInstrument (input_File_Name, output_File_Name,
> >>> instr_number):
> >>>
> >>>     "takes an .csd input file and grabs instr_number instrument and
> >>> creates output_File_Name"
> >>>     f = open (input_File_Name , 'r')                #opens file passed
> >>> in to read
> >>>     f2 = open (output_File_Name, 'w')               #opens file passed
> >>> in to write
> >>>     instr_yes = 'false'                             #set flag to false
> >>>
> >>>     for line in f:                                  #for through all
> >>> the lines
> >>>       if "instr" in line:                           #look for instr in
> >>> the file
> >>>            if instr_yes == 'true':                    #check to see if
> >>> this ends the instr block
> >>>                break                                #exit the block
> >>>
> >>>            reline = re.line.split('instr', '/d$')     #error probily
> >>> split instr and /d (decimal number into parts) $ for end of line
> >>>            number = int(reline[1])                  #convert to a
> >>> number maybe not important
> >>>                 if number == instr_number:            #check to see if
> >>> it is the instr passed to function
> >>>                 instr_yes = "true":                 #change flag to
> >>> true because this is the instr we want
> >>>       if instr_yes = "true":                        #start of code to
> >>> copy to another file
> >>>            f2.write(f.line)                         #write line to
> >>> output file
> >>>
> >>>     f.close                                         #close input file
> >>>     f2.close
> >>>
> >>> [/code]
> >>>
> >>>
> >>>
> >> Eric,
> >>       From your problem description and your code it is unclear what
> >> exactly it is you want. The task appears to be rather simple, though,
> >> and if you don't get much useful help I'd say it is because you don't
> >> explain it very well.
> >>       I believe we've been through this before and your input data is
> >> like this
> >>
> >>    data = '''
> >>    <CsoundSynthesizer>;
> >>      ; test.csd - a Csound structured data file
> >>
> >>    <CsOptions>
> >>      -W -d -o tone.wav
> >>    </CsOptions>
> >>
> >>    <CsVersion>    ;optional section
> >>      Before 4.10  ;these two statements check for
> >>      After 4.08   ;   Csound version 4.09
> >>    </CsVersion>
> >>
> >>    <CsInstruments>
> >>      ; originally tone.orc
> >>      sr = 44100
> >>      kr = 4410
> >>      ksmps = 10
> >>      nchnls = 1
> >>      instr   1
> >>          a1 oscil p4, p5, 1 ; simple oscillator
> >>             out a1
> >>        endin
> >>    </CsInstruments>
> >>
> >>    <CsScore>
> >>      ; originally tone.sco
> >>      f1 0 8192 10 1
> >>      i1 0 1 20000 1000 ;play one second of one kHz tone
> >>      e
> >>    </CsScore>
> >>
> >>    </CsoundSynthesizer>
> >>
> >> Question 1: Is this your input?
> >> if yes:
> >>     Question 1.1: What do you want to extract from it? In what format?
> >> if no:
> >>     Question 1.1: What is your input?
> >>     Question 1.2: What do you want to extract from it? In what format?
> >> Question 2: Do you need to generate output file names from the data?
> >> (One file per instrument?)
> >> if yes:
> >>    Question 2.1: What do you want to make your file name from?
> >> (Instrument number?)
> >>
> >>
> >> Regards
> >>
> >> Frederic
> >>
> >
> > I want to pass the file name to the subroutine and return a comment
> > string if it is there maybe it should be simplier.  I probily should
> > have the option of grabbing the comment in other related routines.  I
> > am pretty ambitious with the main program.  I did notice some code in
> > tcl that would be usefull to the app If I compile it..  I am probily
> > not ready for that though..
> >
> > http://www.dexrow.com
> >
> >
>
> Eric,
>      I'm beginning to enjoy this. I'm sure we'll sort this out in no
> time if we proceed methodically. Imagine you are a teacher and I am your
> student. This is a quiz. I have to take it and you need to explain to me
> the problem you want me to solve. If you don't explain it clearly, I
> will not know what I have to do and cannot do the quiz. If you answer my
> questions above, your description of the problem will be clear and I can
> take the quiz. Okay?
>
> Frederic


instr   1
         a1 oscil p4, p5, 1 ; simple oscillator    ; comment is
sometimes here
            out a1
       endin


I need to know the file I wan't to grab this from I need to grab this
out of the larger file and put it into it's own file,  I need to know
what instr the user wants.  I need to know what file to put it into and
it would be usefull to have the comment line returned (if any).

I did just get python essential reference 3rd edition..  If there is a
better reference on just the subject I am after I would be glad to grab
it when I get cash again.



From nospam at domain.tld  Thu Sep 21 00:42:38 2006
From: nospam at domain.tld (Stephan Kuhagen)
Date: Thu, 21 Sep 2006 06:42:38 +0200
Subject: Trying to run an external program
References: <mailman.357.1158793513.10491.python-list@python.org>
Message-ID: <eet57u$qeu$1@kohl.informatik.uni-bremen.de>

Brant Sears wrote:

> Any ideas on what I might do to troubleshoot this?

As other stated out, you are using the wrong module. Try:

>>> import os
>>> p=os.popen('dir')
>>> for l in p:
...   print l
...
--- OUTPUT OF DIR HERE ---
>>> p.close()

The return value of close is the return value of the command run. If you
need to read stdout and stderr of your command or write to its stdin, use
popen2, popen3, popen4 from the os-module.

Regards
Stephan


From apardon at forel.vub.ac.be  Thu Sep 28 02:59:50 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 06:59:50 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<1159370280.794129.104190@i3g2000cwc.googlegroups.com>
Message-ID: <slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-27, George Sakkis <george.sakkis at gmail.com> wrote:
> Antoon Pardon wrote:
>
>> What bothers me a bit about the rejection of PEP 326 is that one of the
>> reasons stated is:
>>
>>   http://mail.python.org/pipermail/python-dev/2004-January/042306.html
>>
>>   - it is easily implemented when you really need it
>>
>> Well I thought it would simplify some things for me, so I tried an
>> implementation and then found that some of the things that I would
>> want to do with it wont work. So the "is easily implemented" bit
>> seems not to be correct.
>
> IIRC, the PEP proposed the Smallest and Largest singletons with the
> sole purpose of being used in comparisons. No numeric behavior was
> implied, i.e. Smallest and Largest are not negative and positive
> infinity in the math sense of the word.

That is true.

> So I guess the "easily implemented" refers to this case alone.

This doesn't follow. Take the example were I got stuck.

>>> lst = range(10)
>>> lst[:Top]

This doesn't need arithmetics done with Top. The only fact that
you need is: Top >= len(lst). In a way this isn't that difficult
in itself, it becomes difficult because python doesn't allow
ducktyping for a lot of its builtins. I could write my own
function:

  def leftslice(lst, num):
    return  [ tp[1] for tp in enumerate(lst) if tp[0] < num ]


This function works as expected if you substituted Top for num
and as you can see, no arithmetic is done on num, only comparisons.

-- 
Antoon Pardon


From fredrik at pythonware.com  Wed Sep 13 00:24:13 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 06:24:13 +0200
Subject: elementtree: line numbers and iterparse
In-Reply-To: <12gesf81fprdmef@corp.supernews.com>
References: <12gesf81fprdmef@corp.supernews.com>
Message-ID: <ee815d$465$1@sea.gmane.org>

Stuart McGraw wrote:

> I have a broad (~200K nodes) but shallow xml file
> I want to parse with Elementtree.  There are too many 
> nodes to read into memory simultaneously so I use
> iterparse() to process each node sequentially.
> 
> Now I find i need to get and save the input file line 
> number of each node.  Googling turned up a way 
> to do it by subclassing FancyTreeBuilder,
> (http://groups.google.com/group/comp.lang.python/msg/45f5313409553b4b?hl=en&)
> but that tries to read everything at once.
> 
> Is there a way to do something similiar with iterparse()?

something like this could work:

import elementtree.ElementTree as ET
import StringIO

data = """\
<doc>
   <tag>
     <subtag>text</subtag>
     <subtag>text</subtag>
   </tag>
</doc>
"""

class FileWrapper:
     def __init__(self, source):
         self.source = source
         self.lineno = 0
     def read(self, bytes):
         s = self.source.readline()
         self.lineno += 1
         return s

# f = FileWrapper(open("source.xml")
f = FileWrapper(StringIO.StringIO(data))

for event, elem in ET.iterparse(f, events=["start", "end"]):
     if event == "start":
         print f.lineno, event, elem

</F>



From johnjsal at NOSPAMgmail.com  Sat Sep 30 21:54:44 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 21:54:44 -0400
Subject: storing variable names in a list before they are used?
In-Reply-To: <5UETg.5196$o71.853@newsread3.news.pas.earthlink.net>
References: <hQeTg.57$1n3.320@news.tufts.edu>
	<451ea06c$0$14713$c3e8da3@news.astraweb.com>
	<451eb97a$0$12859$c3e8da3@news.astraweb.com>
	<4rzTg.5009$o71.4172@newsread3.news.pas.earthlink.net>
	<451edb4e$0$30791$c3e8da3@news.astraweb.com>
	<5UETg.5196$o71.853@newsread3.news.pas.earthlink.net>
Message-ID: <451f2030$0$14767$c3e8da3@news.astraweb.com>

Dennis Lee Bieber wrote:

> 	Look toward the potential future... Wherein your entire GUI is
> defined with something like XML. Basically you'd be parsing the XML into
> some structure (of structures) in which the only real access to the data
> requires looking up the substructure using some fixed identifier.

Yeah, this is supported by wxPython, but I don't fully understand it 
yet. I also feel like if I start using XML before I really learn how to 
hand-code all of this in wxPython, then I'm missing out on learning the 
real basics of doing it myself.


From robert.kern at gmail.com  Fri Sep 15 16:17:20 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 15 Sep 2006 15:17:20 -0500
Subject: How do I converted a null (0) terminated string to a Python 
	string?
In-Reply-To: <1158350601.382570.65030@i3g2000cwc.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>	<mailman.66.1158218413.10491.python-list@python.org>	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>	<pan.2006.09.14.15.36.07.509974@gmx.net>	<1158248572.373909.53420@d34g2000cwd.googlegroups.com>	<mailman.94.1158249543.10491.python-list@python.org>	<1158336701.552009.137100@m73g2000cwd.googlegroups.com>
	<1158350601.382570.65030@i3g2000cwc.googlegroups.com>
Message-ID: <eef1of$1s4$1@sea.gmane.org>

George Sakkis wrote:
> Michael wrote:
> 
>> Robert,
>>
>> Thanks to you and everyone else for the help. The "s.split('\x00',
>> 1)[0] " solved the problem.
> 
> And a probably faster version: s[:s.index('\x00')]

Yup. About twice as fast for at least one dataset:


In [182]: import timeit

In [183]: t1 = timeit.Timer("s.split('\\x00', 1)[0]", "s='abc\\x00'*256")

In [184]: t2 = timeit.Timer("s[:s.index('\\x00')]", "s='abc\\x00'*256")

In [192]: t1.repeat(3, 100000)
Out[192]: [0.68063879013061523, 0.67146611213684082, 0.66347002983093262]

In [193]: t2.repeat(3, 100000)
Out[193]: [0.35819387435913086, 0.35968899726867676, 0.37595295906066895]

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From sanxiyn at gmail.com  Fri Sep  1 00:41:57 2006
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Fri, 1 Sep 2006 13:41:57 +0900
Subject: Table of Python Packages
Message-ID: <5b0248170608312141x340acd52j387c45cb0242ef37@mail.gmail.com>

Hello, c.l.py, and catalog-sig,

This post updates last year's post:
http://mail.python.org/pipermail/catalog-sig/2005-March/000506.html

Believe it or not, I am still maintaining this table, and it can be
now found here:
http://sparcs.kaist.ac.kr/~tinuviel/package/list.cgi?name=python

Now you can see version comparison between distributions:
http://sparcs.kaist.ac.kr/~tinuviel/package/list.cgi?name=python&version=1

Version information is updated daily by an automated cron job. Now the
table contains over 400 entries.

If you have any suggestions or corrections, please mail me.

Seo Sanghyeon


From maric at aristote.info  Fri Sep  8 07:15:12 2006
From: maric at aristote.info (Maric Michaud)
Date: Fri, 8 Sep 2006 13:15:12 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <450126b3$0$22554$626a54ce@news.free.fr>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
	<450126b3$0$22554$626a54ce@news.free.fr>
Message-ID: <200609081315.13430.maric@aristote.info>

Le vendredi 08 septembre 2006 10:15, Bruno Desthuilliers a ?crit?:
> You
> mentioned NotImplementedError, which is indeed the usual way to make
> something "abstract" in Python.

Hummm, some more thoughts about this.

I can imagine class hierarchies where the presence of not implemented methods 
doesn't mean that the class is actually an abstract one. Even if partial 
implementation is not a common scheme it can save you from writing a lot of 
classes.

For example :

class car : #abstract
	def accelerate() : raise NotimplementedError
	def getBaseBuildPrice() : raise NotimplementedError
	def getOptionsPrice() : raise NotimplementedError
	def getPublicPrice() : raise NotimplementedError

class SerieA(car) :
	"""abstract, it's before the car
	get out of the factory"""
	def accelerate() : ...
	def getBaseBuildPrice() : ...

class CrashTestVendorSerieA(SerieA) :
	"""concrete, but doesn't
	implement getPublicPrice"""
	def getOptionsPrice() : ...

class CommercialSerieA(SerieA) :
	def getOptionsPrice() : ...
	def getPublicPrice() : ....

Doing the same with more traditional object design give :

class car : #abstract
	def accelerate() : raise NotimplementedError
	def getBaseBuildPrice() : raise NotimplementedError

class SerialCar : #abstract
	def getOptionsPrice() : raise NotimplementedError

class ComercialCar : #abstract
	def getPublicPrice() : raise NotimplementedError

class SerieA(car, SeriialCar) : #abstract
	def accelerate() : ...
	def getBaseBuildPrice() : ...

class CrashTestVendorSerieA(SerieA) : # concrete
	def getOptionsPrice() : ...

class CommercialSerieA(SerieA, CommercialCar) : # concrete
	def getOptionsPrice() : ...
	def getPublicPrice() : ...

And this can become a true spider net for more complicated cases. Obviously, 
in practice we will choose alternatives to inheritance (strategies, 
visitors, ...) to work with such complex situations, but it seems to me that 
partial implementation is not a bad choice, specifically in regard to duck 
typing.


-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From bj_666 at gmx.net  Tue Sep  5 01:58:04 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Tue, 05 Sep 2006 07:58:04 +0200
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
Message-ID: <pan.2006.09.05.05.58.03.689280@gmx.net>

In <1157418942.105174.228650 at p79g2000cwp.googlegroups.com>,
mensanator at aol.com wrote:

> But watch this: being clueless (but not stupid) is a gift I have
> for troubleshooting. I tried (incorrectly) to insert another record:
> 
> cur.execute("insert into book(title, author, published) values ('Dirk
> Gently''s Holistic Detective Agency','Douglas Adams','1987')")
> 
> (u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', 1987)
> (u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', u'1987')
> 
> Uhh...how can a database have a different field type for each record?
> 
> Simple, without a cast when the table is created, the field type is
> whatever you insert into it. That's how the default must work,
> each record has a data structure independent of every other record!
> 
> Wow. Just think of the kind of bugs *that* must cause.
> 
> Bugs?

It's not a bug, it's a feature.  And answered as third point in the FAQ:

http://www.sqlite.org/faq.html#q3

I think your whole experience is based on it.  Live with it or use a
real RDBMS.

If you are so fond of static typing, why are you using Python in the first
place?  Just see it as consistency -- dynamically typed language ?
dynamically typed DB columns.  ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From wdraxinger at darkstargames.de  Tue Sep  5 07:31:04 2006
From: wdraxinger at darkstargames.de (Wolfgang Draxinger)
Date: Tue, 05 Sep 2006 13:31:04 +0200
Subject: Higher-level OpenGL modules
References: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>
Message-ID: <oo30t3-748.ln1@darkstargames.dnsalias.net>

Leon wrote:

> http://www.processing.org/reference/index.html).  The closest
> thing I could find was devachan -

Hava a look at Amanith http://www.amanith.org
OpenGL is that "low" level by design. Everything beyond is to be
packed into other libraries.

Wolfgang Draxinger
-- 
E-Mail address works, Jabber: hexarith at jabber.org, ICQ: 134682867
GPG key FP: 2FC8 319E C7D7 1ADC 0408 65C6 05F5 A645 1FD3 BD3E


From hg at nospam.com  Fri Sep  8 14:07:18 2006
From: hg at nospam.com (hg)
Date: Fri, 08 Sep 2006 13:07:18 -0500
Subject: mysqldb + multi-threading
Message-ID: <0piMg.136445$LF4.125458@dukeread05>

Hi,

I am writing a transaction server (socket-based) under windows.

I use mysqldb to log info into MySQL.

It is all working and I need now to decide whether to use forks
(CreateProcess I guess) or threads.

I saw in another thread that some db engines did have issues with being
called from threads.

My gut feeling is to use threads (note: each transaction is finite, so
the process/thread die fairly quickly).

Any insight ?


hg


From simon at brunningonline.net  Tue Sep 19 09:16:30 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 19 Sep 2006 14:16:30 +0100
Subject: How to efficiently proceed addition and subtraction in python
	list?
In-Reply-To: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
Message-ID: <8c7f10c60609190616g35b451f5m5cce782f3e48eda9@mail.gmail.com>

On 18 Sep 2006 15:43:31 -0700, Daniel Mark <danielmarkhot at gmail.com> wrote:
> Hello all:
>
> I have a list AAA = [1, 2, 3] and would like to subtract one from list
> AAA
> so AAA' = [0, 1, 2]

You've had some excellent suggestions as to how to go about this
assuming that by "efficient" you mean in terms of CPU. If, instead,
you are concerned with memory usage, you might instead do something
like:

for index, value in enumerate(AAA):
    AAA[index] = value-1

-- 
Cheers,
Simon B,
simon at brunningonline.net


From felipe.lessa at gmail.com  Tue Sep 26 14:18:01 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Tue, 26 Sep 2006 15:18:01 -0300
Subject: QOTW (was Re: does anybody earn a living programming in python?)
In-Reply-To: <slrnehii6f.pnl.sybrenUSE@schuimige.stuvel.eu>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
	<mailman.624.1159249638.10491.python-list@python.org>
	<efbg8h$c6j$1@panix3.panix.com>
	<slrnehii6f.pnl.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <c2701f5c0609261118i18efda5ch5c2698d50750fe05@mail.gmail.com>

2006/9/26, Sybren Stuvel <sybrenUSE at yourthirdtower.com.imagination>:
> Aahz enlightened us with:
> > Fredrik Lundh  <fredrik at pythonware.com> wrote:
> >>
> >>well, if you're only watching mtv, it's easy to think that there's
> >>obviously not much demand for country singers, blues musicians,
> >>British hard rock bands, or melodic death metal acts.
> >
> > Any other votes for this being QOTW?
>
> +1 here
>

+1 here, too

-- 
Felipe.


From marleyziggy at hotmail.com  Fri Sep  1 20:21:41 2006
From: marleyziggy at hotmail.com (Gimble)
Date: 1 Sep 2006 17:21:41 -0700
Subject: disgrating a list
In-Reply-To: <1157155975.609817.18620@m73g2000cwd.googlegroups.com>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
	<1157149768.698178.95060@b28g2000cwb.googlegroups.com>
	<1157155975.609817.18620@m73g2000cwd.googlegroups.com>
Message-ID: <1157156501.311898.257570@e3g2000cwe.googlegroups.com>

Or, (to add needed recursion to your simple loop):

def flatten(x):
    "Modified in-place flattening"
    for i in range(len(x)):
        if isinstance(x[i], list):
            x[i:i+1] = flatten(x[i])
    return x

This version modifies in-place (as yours does), which may or may not be
what you want, depending on whether or not you need both the flat and
un-flat versions.



From bearophileHUGS at lycos.com  Wed Sep 27 20:02:08 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 27 Sep 2006 17:02:08 -0700
Subject: Ordered dicts
In-Reply-To: <mailman.707.1159286936.10491.python-list@python.org>
References: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
	<mailman.707.1159286936.10491.python-list@python.org>
Message-ID: <1159401728.015770.321000@m73g2000cwd.googlegroups.com>

Steve Holden:

I forgot a detail: in the Python version of Odict I use element
deletion is O(n). You need a second dict to improve that (or a duble
linked list of hashing operations, see below).

> FYI there was a *long* discussion around the need for Speed sprint about
> implementing ordered dicts. As the discussion started by your thread has
> started to reveal, everyone has just-ever-so-slightly-different
> requirements. IIRC the goal was dropped because it wasn't possible to
> agree on a specification.

I received a similar answer about graphs too. But this time I think the
semantic of an ordered dict is simple and clear enough, so I belive a
generally acceptable solution may be found still.
An implementation with double linked lists allows amortized O(1) for
all the usual dict metods, deletions too. Maybe firstkey()  lastkey()
methods can be added too, that return the first and last key of the
odict.
The following is a simple example, note that this is a "wrong"
implementation, because you can't scan the keys in the ordered way (you
can scan the values in a ordered way). I presume in a C implementation
you can find the key of a given value. If this isn't possibile without
creating a chain of hashing operations, then I too drop off from this
odict idea :-)

class Odict(dict):
  def __init__(self):
    dict.__init__(self)
    self.lh = None # list header
    self.lt = None # list tail

  def __getitem__(self, key):
    return dict.__getitem__(self, key)[1]

  def __setitem__(self, key, val):
    if key in self:
      dict.__getitem__(self, key)[1] = val
    else:
      new = [self.lt, val, None]
      dict.__setitem__(self, key, new)
      if self.lt: self.lt[2] = new
      self.lt = new
      if not self.lh: self.lh = new

  def __delitem__(self, k):
    if k in self:
      pred,_,succ= dict.__getitem__(self,k)
      if pred: pred[2] = succ
      else: self.lh = succ
      if succ: succ[0] = pred
      else: self.lt = pred
      dict.__delitem__(self, k)
    else: raise KeyError, k

Bye,
bearophile



From amit.man at gmail.com  Sun Sep  3 15:22:37 2006
From: amit.man at gmail.com (noro)
Date: 3 Sep 2006 12:22:37 -0700
Subject: data structure
Message-ID: <1157311357.540771.238970@h48g2000cwc.googlegroups.com>

Hello again.

I have a task i need to do and i can't seem to find an elegent
solution.
i need to make a tree like data structure (not necessry a binary tree).


i would like each node to access his sons in a dicionary kind of why,
for example: if  ROOT node has the name 'A' and 'AA', 'AB' are his
sons, and 'ABA' is 'AB son etc' (in this name scheme the letters from
left to right shows the route from the root to the node) then
ROOT['AB'] will point to 'AB' node and ROOT['AB'][ABA'] will point to
'ABA' node.

the tree does not have to be symmarical and every node link to
different number of nodes. two nodes can have the same name if they are
in a different location in the tree. so ROOT['factory1]['manager'] and
ROOT['factory2']['manager'] can be in the same tree and point to
different objects.

all up to now i can manage.
---------------------
my problem is this: i would like to find a way to easly construct the
tree by giving some simple template, somthing similer to:
"
ROOT={'factory1':FACTORY,'facory2':FACTORY,'linux':OS,'windows':OS}
FACTORY={'manager':EMPLOEY,'worker':EMPLOEY,'office':BUILDING,'......}
OS={'ver':VERSION,'problems':LIST,....}
"
i started bulding the class NODE as an extention of  "dict" with the
keys are the childern names and the items are the next node reference.
the proablem was that as you can see from the above example 'factory1'
and 'factory2' point to the same object. i would like to have 2
different objects of FACTORY. making FACTORY a template and not an
object.

i'll appreciate any comment
amit



From wildemar at freakmail.de  Sat Sep 16 13:33:25 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sat, 16 Sep 2006 19:33:25 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <450C3565.8020400@freakmail.de>

nicolasfr at gmail.com wrote:
> I have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
 >
Where have you read that?

wildemar


From anthra.norell at tiscalinet.ch  Thu Sep  7 16:47:38 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Thu, 7 Sep 2006 22:47:38 +0200
Subject: Using Beautiful Soup to entangle bookmarks.html
Message-ID: <013201c6d2be$dafd7260$0201a8c0@mcuf7>

> Hi,
>
> I'm trying to use the Beautiful Soup package to parse through the
> "bookmarks.html" file which Firefox exports all your bookmarks into.
> 've been struggling with the documentation trying to figure out how to
> extract all the urls. Has anybody got a couple of longer examples using
> Beautiful Soup I could play around with?
>
> Thanks,
> Martin.


Martin,

   SE is a stream editor that does not introduce the overhead and complications of overkill parsing. See if it suits your needs:
http://cheeseshop.python.org/pypi/SE/2.2%20beta

>>> import SE
>>> Bookmark_Filter  = SE.SE ('''
      <EAT>   # delete all unmatched input
      "~(?i)<a.*?href.*?>~==\n"    # keep hrefs and add a new line
      "~(?i)[^>]+/a>~==\n\n"  # keep text till end of anchor and add two newlines
      |   # run
       <a= <A= </a>= </A>= href\== HREF\==  >=      # delete the noise (extend to your liking)
''')

>>> print Bookmark_Filter (r'C:\WINDOWS\Application Data\Mozilla\Profiles\default\wwaidm0p.slt\bookmarks.html', '')    # 2nd
parameter '' commands string output. Default is a file.
...

 "http://www.inksupply.com/index.cfm?source=html/main2.html" ADD_DATE="1016024829" LAST_VISIT="1039439802" LAST_CHARSET="ISO-8859-1"
MIS Associates Inc.

 "http://www.weink.com/" ADD_DATE="1016034183" LAST_VISIT="1118782455" LAST_CHARSET="windows-1252"
Inkjet, Laser, Copier, Fax Supplies

 "http://www.nextrend.com/analysis/content/pr_9-19-2000.asp" ADD_DATE="1018037196" LAST_VISIT="1126289805" LAST_CHARSET="ISO-8859-1"
NexTrend - Press Releases

 "http://wp.netscape.com/escapes/search/netsearch_E.html" ADD_DATE="1021644432" LAST_VISIT="1023182857" LAST_CHARSET="ISO-8859-1"
Net Search Page - Google

 "http://www.python.org/" ADD_DATE="1021651575" LAST_VISIT="1121690494" LAST_CHARSET="ISO-8859-1"
Python Language Website

 "http://www.teldir.com/real/frame.asp?page=http://www.whitepages.ch" ADD_DATE="1027354641" LAST_VISIT="1115386846"
LAST_CHARSET="windows-1252"
http://www.teldir.com/real/frame.asp?page=http://www.whitepages.ch

... etc.


You may refine this further by adding more deletions or substitutions. Adding them one by one and examining the output each time
around is very easy and straightforward. The SE object accepts strings as well as file names and then returns strings by default, so
developing interactively in an IDLE window using a sample data string is extremely fast and painless, because it is possible to
develop incrementally, one step at a time.

>>> Bookmark_Filter.save ('bookmark_filter.se')    # Save definitions to an editable text file
>>> Bookmark_Filter = SE. SE. ('bookmark_filter.se')    # Next time naming the definition file makes the same object

Regards

Frederic




From duncan.booth at invalid.invalid  Thu Sep 21 10:04:25 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 21 Sep 2006 14:04:25 GMT
Subject: How to get ip setting, dynamic ip or static ip?
References: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>
Message-ID: <Xns984598CE3A032duncanbooth@127.0.0.1>

"kode4u" <kode4u at gmail.com> wrote:

> How to use python get my windows box's ip setting type? Dynamic ip, or
> static ip?
> 
> If it's static ip, what's the exact value?
> 
Here's one way:

def ipinfo(interface="Local Area Connection"):
	dhcpenabled = False
	staticip = None
	subnetmask = None
	for l in os.popen('netsh interface ip show address "%s"' % interface):
		l = l.strip()
		if l.startswith('DHCP enabled'):
			dhcpenabled = l.endswith('Yes')
		if l.startswith("IP Address"):
			staticip = l.rsplit(None,1)[-1]
		if l.startswith("SubnetMask"):
			subnetmask = l.rsplit(None,1)[-1]
	return dhcpenabled, staticip, subnetmask

>>> ipinfo()
(True, None, None)
>>> ipinfo("VMware Network Adapter VMnet1")
(False, '192.168.126.1', '255.255.255.0')


From chris.cavalaria at free.fr  Tue Sep 26 05:44:40 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Tue, 26 Sep 2006 11:44:40 +0200
Subject: Surprise using the 'is' operator
In-Reply-To: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
Message-ID: <4518f66f$0$18998$636a55ce@news.free.fr>

codefire a ?crit :
> I thought the 'is' operator was used to identify identical objects,
> whereas the '==' operator checked equality. Well, I got a surprise
> here:
> 
> IDLE 1.1.3
>>>> a = 10
>>>> b = a
>>>> a is b
> True
>>>> a == b
> True
>>>> c = 10
>>>> a == c
> True
>>>> a is c
> True
> 
> I was NOT expecting the last statement to return True!

The answer is : Why not? Does it even matter for integers? Never use 
"is" on integers, always == ( and on strings too for that matter )


From bearophileHUGS at lycos.com  Wed Sep 13 19:31:05 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 13 Sep 2006 16:31:05 -0700
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
Message-ID: <1158190265.017412.203500@h48g2000cwc.googlegroups.com>

My first try, not much tested:

def clean(d):
    for key,val in d.items():
        if isinstance(val, dict):
            val = clean(val)
        if not val:
            del d[key]
    return d

a = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
print clean(a) # Out: {1: {2: 2, 3: {2: 2}}, 2: 2}
b = {1: {1: {1: None, 2: {1: None}}}, 2: 2, 3: None}
print clean(b) # Out: {2: 2}

Recursivity overflow problem: you can increase the recursivity limit,
of if you think you need it after some tests on your real data, then
you can use a stack (a python list, using append and pop methods) to
simulate recursivity. You probably don't have 300+ levels of nesting.

Bye,
bearophile



From jamiegrove at gmail.com  Mon Sep  4 20:33:20 2006
From: jamiegrove at gmail.com (clothingoptional)
Date: 4 Sep 2006 17:33:20 -0700
Subject: python web framework for straight sql (no ORM)?
In-Reply-To: <1157409584.753926.5150@p79g2000cwp.googlegroups.com>
References: <1157409584.753926.5150@p79g2000cwp.googlegroups.com>
Message-ID: <1157416400.737660.212400@i42g2000cwa.googlegroups.com>

It's hard to imagine a framework that would provide you with admin
functions like Django without using ORM...  seems dicey at best.
Anyway, it sounds like you are just looking for more flexibility, a
framework that doesn't dictate - is that so?  In that case, you might
check out Pylons (pylonshq.com).

> Can someone please recommend a python web app framework which doesn't
> abstract away sql in favor of python objects?
>
> As far as I can tell, frameworks such as django, turbo gears, etc.
> allow one to drop down the the sql layer, however that is not the most
> effecient use of the framework.  I would like to use sql (similar to
> how JSP's JSTL provides tag libraries for sql), yet not have to build
> my own components such as: site administration, user registration,
> authentication, rss feeds, etc. (I guess I'm thinking of a Django with
> straight db-api database interface).
> 
> Is there such a framework?
> 
> Thanks.



From nick at craig-wood.com  Mon Sep 11 12:30:06 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Mon, 11 Sep 2006 11:30:06 -0500
Subject: A cross platform systray icon
References: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>
	<1157984152.211362.312300@m73g2000cwd.googlegroups.com>
Message-ID: <slrnegb131.825.nick@irishsea.home.craig-wood.com>

TheSeeker <duane.kaufman at gmail.com> wrote:
>  Nick Craig-Wood wrote:
> > Does anyone have some hints / tips / experience with making a cross
> > platform systray icon?  It should work on Windows, Gnome and KDE at
> > minimum.
>  You might do a search for TaskBarIcon in the wxPython toolkit.

Yes thank you (and everyone else) who replied with that - that looks
like just the thing.

I was able to create a systray icon that worked under linux and
windows which is great!

Now to learn wxpython ;-)

Thanks

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From superflit at gmail.com  Fri Sep  1 09:57:48 2006
From: superflit at gmail.com (flit)
Date: 1 Sep 2006 06:57:48 -0700
Subject: working with ldap files
Message-ID: <1157119067.915441.219160@m79g2000cwm.googlegroups.com>

Hello All,

I am struggling with some ldap files.

I am using the csv module to work with this files (I exported the ldap
to a csv file).
I have this string on a field
CN=pointhairedpeoplethatsux,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com;CN=pointhairedboss,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com
this string is all the groups one user has membership.
So what I am trying to do.
read this string
and extract only the CNs

like

pointhairdepeoplethatsux,pointhairedboss

Or think in negative way
remove the OU=****** and DC= ******

Any ideas?



From john at castleamber.com  Tue Sep 26 20:51:31 2006
From: john at castleamber.com (John Bokma)
Date: 27 Sep 2006 00:51:31 GMT
Subject: A critique of cgi.escape
References: <slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<Xns984ABA8B57753castleamber@130.133.1.4>
	<efcgug$vu2$3@lust.ihug.co.nz>
Message-ID: <Xns984ACA5C01059castleamber@130.133.1.4>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> In message <Xns984ABA8B57753castleamber at 130.133.1.4>, John Bokma
> wrote: 

[..]
 
>> ... href="/search.cgi?query=3&results=10" 
> 
> You _do_ realize that the "&" should be escaped as "&amp;", don't you?

And what's "/search.cgi?query=3&results=10"? An attribute value. Exactly 
my point.

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From anthonybaxter at gmail.com  Tue Sep 26 23:57:19 2006
From: anthonybaxter at gmail.com (Anthony Baxter)
Date: Wed, 27 Sep 2006 13:57:19 +1000
Subject: A critique of cgi.escape
In-Reply-To: <efcq62$fmc$1@sea.gmane.org>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz> <efaknl$867$2@news.albasani.net>
	<efakui$idf$4@lust.ihug.co.nz> <efate6$ilf$1@news.albasani.net>
	<efb1q3$a43$2@lust.ihug.co.nz>
	<mailman.673.1159276007.10491.python-list@python.org>
	<efch5p$2cc$1@lust.ihug.co.nz> <efcq62$fmc$1@sea.gmane.org>
Message-ID: <e69d3ed20609262057j767e02b6w2312963aa1dde2b0@mail.gmail.com>

> I would really rather this were a discussion than an argument. You will
> now no doubt reply telling me I wouldn't.
>
> My posting was issued as a response to the irritation engendered by your
> argumentative style of debate. Your latest response simply proves that
> there is indeed no remark, however irrelevant, that you will allow to go
> unanswered.

The Complaints department is down the hall...


From fredrik at pythonware.com  Tue Sep 12 14:50:37 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 20:50:37 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158083866.689838.150070@p79g2000cwp.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>
	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>
Message-ID: <ee6vhs$6op$1@sea.gmane.org>

mensanator at aol.com wrote:

> Because I can extrapolate. I *know* before even trying it that
> if I export all my data from a sqlite db to a csv file and then try
> to import it into Access that there will be problems if the fields
> aren't static typed.

that's just the old "C++/Java is better than Smalltalk/Python/Ruby" 
crap.  we've seen it before, and it's no more true when it comes from 
you than when it comes from some Java head.  people who've actually used 
dynamic typing knows that it doesn't mean that all objects have random 
types all the time.

> That's one of the reasons why I was such a good test engineer.
> I could anticipate problems the design engineers didn't think of
> and I would deliberately provoke those problems during testing
> and crash their hardware/software.
> 
> I wasn't very popular.

no wonder, if you kept running around telling your colleagues that they 
were liars and crackpots and slanderers when things didn't work as you 
expected.  what's your current line of work, btw?

</F>



From m.sloyko at gmail.com  Tue Sep  5 08:58:57 2006
From: m.sloyko at gmail.com (Maxim Sloyko)
Date: 5 Sep 2006 05:58:57 -0700
Subject: Minidom XML output - attributes in wrong order ?
References: <776dneNzoZJh3mDZRVn_vA@telenor.com>
Message-ID: <1157461137.739085.314580@m79g2000cwm.googlegroups.com>


> So it seems the dom module sorts the attributes alphabetically. Is there any
> way I can prevent it from doing that ? What I want is to list them out in
> the same order as they are added in the code...

I don't know how to do what you ask, I'm just here to warn you that you
shouldn't rely on the order of attributes in the document in any way,
because this is implementation dependent.

If you need to preserve order of some items -- use child elements
instead of attributes.

--
Regards, Maxim Sloyko



From johnjsal at NOSPAMgmail.com  Wed Sep 27 14:06:15 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 18:06:15 GMT
Subject: ElementTree and proper identation?
In-Reply-To: <iYySg.34$1n3.469@news.tufts.edu>
References: <iYySg.34$1n3.469@news.tufts.edu>
Message-ID: <r4zSg.35$1n3.414@news.tufts.edu>

John Salerno wrote:
> I've been doing a little studying of ElementTree and it doesn't seem 
> very satisfactory for writing XML files that are properly 
> formatted/indented. I saw on the website that there is an 
> indent/prettyprint function, but this isn't listed in the Python docs 
> and I didn't see it after doing a dir(), so I guess it isn't a part of 
> the Python version.
> 
> Did I miss something somewhere else, or can you just not use ElementTree 
> to write formatted XML files as they'd look if done by hand?
> 
> Thanks.

Well, further research reveals that this function isn't available yet in 
any version. But I guess my question remains, is there still a way to do 
this, given the way Element instances are constructed? I would assume 
you can't just use ElementTree to write them to a file, but perhaps 
there is a different way to write to a file that still uses the Element 
objects?


From stefan.behnel-n05pAM at web.de  Sat Sep  9 03:05:15 2006
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Sat, 09 Sep 2006 09:05:15 +0200
Subject: Minidom XML output - attributes in wrong order ?
In-Reply-To: <776dneNzoZJh3mDZRVn_vA@telenor.com>
References: <776dneNzoZJh3mDZRVn_vA@telenor.com>
Message-ID: <450267ab$0$5151$9b4e6d93@newsspool1.arcor-online.net>

Peter M?llerud wrote:
> I'm very new to Python

then you might want to consider using ElementTree or lxml, not necessarily
minidom.


> c = doc.createElement("sometest")
> doc.appendChild(c)
> tmp = doc.createElement("info")
> tmp.setAttribute("vehicle", "car")
> tmp.setAttribute("x-ray ", "100-1")
> tmp.setAttribute("age", "30")
> c.appendChild(tmp)
> print doc.toprettyxml(indent="  ")
> 
> What it then prints out is :
> 
> <?xml version="1.0" ?>
> <sometest>
>   <info age="30" vehicle="car" x-ray ="100-1"/>
> </sometest>
> 
> What I expected was : <info vehicle="car" x-ray="100-1" age="30"/>

Attributes in XML are not ordered and no XML library will keep the order. All
you could do is serialise by hand, which is not that difficult either. Is
there any reason why you might want to keep the order?

Stefan


From anton.list at gmail.com  Wed Sep 20 00:07:29 2006
From: anton.list at gmail.com (anton.list at gmail.com)
Date: 19 Sep 2006 21:07:29 -0700
Subject: why a main() function?
In-Reply-To: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
Message-ID: <1158725248.962667.200920@k70g2000cwa.googlegroups.com>

beliavsky at aol.com wrote:
> I think I read a suggestion somewhere to wrap the code where a Python
> script starts in a main() function, so one has

<snip>

> What are the advantages of doing this?

Others have stated all the good ones, so I'll state a slightly dumber
one for us part time amateur hackers :)

If you start off writing all your python module inside a main function
then as you chop your code up into other functions (refactoring), the
code inside main is already at the proper indentation level for the new
top level functions. No more indenting it one level further to  suit
the functions indentation.

-- 
Cheers
Anton



From anthra.norell at vtxmail.ch  Fri Sep 22 16:45:13 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Fri, 22 Sep 2006 22:45:13 +0200
Subject: Replacing line  in a text  file
In-Reply-To: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
Message-ID: <45144B59.30306@vtxmail.ch>

CSUIDL PROGRAMMEr wrote:
> Folks
> I am trying to read a file
> This file has a line containing string  'disable = yes'
>
> I want to change this line to 'disable = no'
>
> The concern here is that , i plan to take into account the white spaces
> also.
>
> I tried copying all file int list and then tried to manipulate that
> list
>
> But the search is not working
>
> Any answer
>
> thanks
>
>   
>>> s = '''Folks! I am trying to read a file
This file has a line containing string  'disable = yes'
I want to change this line to 'disable = no' ...'''

The second line is the one to change. Okay?

>>> import SE
>>> Translator = SE.SE ('"disable \= yes=disable \= no"')
>>> print Translator (s)
Folks! I am trying to read a file
This file has a line containing string  'disable = no'
I want to change this line to 'disable = no' ...

Did it! - I don't know if it 'takes into account the white spaces' as I don't exactly understand what you mean by that. If need be, just change the substitution definition that makes the Translator to suit your needs. In an IDLE window you can work trial-and-error style five seconds per try. If you want to do other translations, just add more substitution definitions, as many as you want. It will do files too. No need to read them. Like this:

>>> Translator ('file_name', 'translated_file_name')

If this approach seems suitable, you'll find SE here: http://cheeseshop.python.org/pypi/SE/2.2%20beta


Regards

Frederic



From fanglicheng at gmail.com  Thu Sep 14 23:29:19 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 14 Sep 2006 20:29:19 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <mailman.410.1158113807.5279.python-list@python.org>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<y9JNg.1213$IA.251@newssvr11.news.prodigy.com>
	<mailman.410.1158113807.5279.python-list@python.org>
Message-ID: <1158290959.738597.249360@p79g2000cwp.googlegroups.com>

Thank you guys. I've written a CYK parser and realized this is the
right direction. It gives every possible interpretation of the string
and I can retrieve whatever I want.



From seymour.morris at gmail.com  Sat Sep 16 18:12:05 2006
From: seymour.morris at gmail.com (Seymour)
Date: 16 Sep 2006 15:12:05 -0700
Subject: Mechanoid Web Browser - Recording Capability
Message-ID: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>

I am trying to find a way to sign onto my Wall Street Journal account
(http://online.wsj.com/public/us) and automatically download various
financial pages on stocks and mutual funds that I am interested in
tracking.  I have a subscription to this site and am trying to figure
out how to use python, which I have been trying to learn for the past
year, to automatically login and capture a few different pages.
I have mastered capturing web pages on non-password sites, but am
struggling otherwise and have been trying to learn how to program the
Mechanoid module (http://cheeseshop.python.org/pypi/mechanoid) to get
past the password protected site hurdle.

My questions are:
1. Is there an easier way to grab these pages from a password protected
site, or is the use of Mechanoid a reasonable approach?
2. Is there an easy way of recording a web surfing session in Firefox
to see what the browser sends to the site?  I am thinking that this
might help me better understand the Mechanoid commands, and more easily
program it.  I do a fair amount of VBA Programming in Microsoft Excel
and have always found the Macro Recording feature a very useful
starting point which has greatly helped me get up to speed.

Thanks for your help/insights.
Seymour



From sjmachin at lexicon.net  Thu Sep  7 06:54:49 2006
From: sjmachin at lexicon.net (John Machin)
Date: 7 Sep 2006 03:54:49 -0700
Subject: Convert to big5 to unicode
References: <1157617674.982042.22970@i42g2000cwa.googlegroups.com>
	<1157620198.235452.79810@h48g2000cwc.googlegroups.com>
Message-ID: <1157626489.660354.38890@i3g2000cwc.googlegroups.com>

xiejw topposted:
> Install the codecs. In Debain, you can do :
>  apt-get install python-cjkcodecs

With Windows & 2.4, no extra installation step is required.

| Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
| >>> bc = '\xb1i'
| >>> unicode(bc, 'big5')
| u'\u5f35'
| >>>

HTH,
John

>
> Then, it is easy to encode ( I use 'gb2312' ) :
>
>  str = '??'
>  u = unicode(str,'gb2312')
>
> The convertion is done and you can get the string of UTF-8:
>  str_utf8 = u.encode("utf-8")
>
> You can get the original string:
>  str_gb = u.encode("gb2312")
>
>
> GM ???
>
> > Dear all,
> >
> > Could you all give me some guide on how to convert my big5 string to
> > unicode using python? I already knew that I might use cjkcodecs or
> > python 2.4 but I still don't have idea on what exactly I should do.
> > Please give me some sample code if you could. Thanks a lot
> > 
> > Regards,
> > 
> > Gary



From onurb at xiludom.gro  Thu Sep  7 03:45:12 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 07 Sep 2006 09:45:12 +0200
Subject: python vs java
In-Reply-To: <1157578594.300005.47550@e3g2000cwe.googlegroups.com>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
	<44fedfd2$0$32654$626a54ce@news.free.fr>
	<1157578594.300005.47550@e3g2000cwe.googlegroups.com>
Message-ID: <44ffce0a$0$24536$626a54ce@news.free.fr>

Jason wrote:
> Bruno Desthuilliers wrote:
>> With a GUI ? If so, you probably want to check out wxPython or PyGTK
>> (wxPython will also buy you MacOS X IIRC, and wil perhaps be easier to
>> install on Windows).
> 
> Just a warning: wxPython does operate slightly differently between Mac
> OS X, Linux, and Windows.  The differences are usually minor and easy
> to clean up in a cross-platform manner, but be aware that you need to
> test on all platforms that you're going to release on.

I don't think one could pretend writing a cross-platform application
without testing it on all targeted platforms.

(snip)
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From p.lavarre at ieee.org  Mon Sep 25 20:27:08 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 25 Sep 2006 17:27:08 -0700
Subject: Python CTypes translation of (pv != NULL)
Message-ID: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>

Q: The C idea of (pv != NULL) is said most directly in Python ctypes
how?

A: We are of course supposed to write something like:

        def c_not_null(pv):
                return (ctypes.cast(pv, ctypes.c_void_p).value != None)

Yes?

Working from the doc, me the clueless newbie, I was slow to guess such
relevant truths as:

ctypes.c_void_p(0).value == None
ctypes.c_void_p(0) != ctypes.c_void_p(0)

Curiously yours, thanks in advance, Pat LaVarre



From george.sakkis at gmail.com  Fri Sep 15 15:40:37 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 15 Sep 2006 12:40:37 -0700
Subject: Check if variable is an instance of a File object
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
	<450a9add$0$22213$626a54ce@news.free.fr>
Message-ID: <1158349237.725442.90420@k70g2000cwa.googlegroups.com>

Bruno Desthuilliers wrote:

> sc_wizard29 at hotmail.com wrote:
> > #1 : should I start by checking that 'file' is indeed an instance of a
> > File object ?
>
> Unless you have a *very* compelling reason to do so (and I can't imagine
>  one here), definitively, no. FWIW, it's pretty common in Python to pass
> file-like objects (StringIo comes to mind... but there are lots of other
> cases) to functions expecting a file object. And remember that Python
> doesn't relies on inheritence for typing. Also, for what you showed of
> your code, any iterable seems ok !-)

Well, not quite; string comes to mind as a common counter example.
Still, a usually better way to handle a string argument than raising an
exception is wrap it in StringIO:

from cStringIO import StringIO

def show_lines(text):
    if isinstance(text,basestring):
        text = StringIO(text)
   for line in text:
       # do something

	   
George



From timr at probo.com  Thu Sep 21 02:39:19 2006
From: timr at probo.com (Tim Roberts)
Date: Thu, 21 Sep 2006 06:39:19 GMT
Subject: naming objects from string
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
Message-ID: <5oc4h2pdlj53l1s2ani2enjp0h3qb14plp@4ax.com>

"manstey" <manstey at csu.edu.au> wrote:
>
>If I have a string, how can I give that string name to a python object,
>such as a tuple.
>
>e.g.
>
>a = 'hello'
>b=(1234)

That's not a tuple.  That's an integer.  (1234,) is a tuple.

>and then a function
>name(b) = a
>
>which would mean:
>hello=(1234)
>
>is this possible?

Yes, but it's almost never the right way to solve your problem.  Use an
explicit dictionary instead.

    C:\Tmp>python
    Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)]
on win32
    Type "help", "copyright", "credits" or "license" for more information.
    >>> a='hello'    
    >>> locals()[a] = 1234
    >>> hello
    1234
    >>>
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From ramasridhar.kasturi at gmail.com  Thu Sep 14 03:17:53 2006
From: ramasridhar.kasturi at gmail.com (sridhar)
Date: 14 Sep 2006 00:17:53 -0700
Subject: sending emails using python
In-Reply-To: <mailman.117.1157627848.5279.python-list@python.org>
References: <mailman.408.1157615403.5278.python-list@python.org>
	<mailman.117.1157627848.5279.python-list@python.org>
Message-ID: <1158218273.098518.224870@i42g2000cwa.googlegroups.com>


Brendon Towle wrote:
> On Sep 7, 2006, at 3:50 AM, "sridhar"
> <ramasridhar.kasturi at gmail.com>wrote:
>
>
> > iam having user account on an exchangeserver.
> > with that can i send an email using python?
> >
> > if iam using the following code iam getting error
> >
> >
> > fromAddress = 'sridhar_kasturi at satyam.com'
> > toAddress = 'sridhar_kasturi at satyam.com'
> > msg = "Subject: Hello\n\nThis is the body of the message."
> > import smtplib
> > server = smtplib.SMTP("hstmsg002",25)
> > server.sendmail(fromAddress, toAddress, msg)
> >
> > error:
> >
> > Traceback (most recent call last):
> >   File
> > "C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout
> > \InitialMailExample.py",
> > line 5, in ?
> >     server = smtplib.SMTP("hstmsg002",25)
> >   File "C:\Python24\lib\smtplib.py", line 244, in __init__
> >     (code, msg) = self.connect(host, port)
> >   File "C:\Python24\lib\smtplib.py", line 307, in connect
> >     (code, msg) = self.getreply()
> >   File "C:\Python24\lib\smtplib.py", line 351, in getreply
> >     raise SMTPServerDisconnected("Connection unexpectedly closed")
> > SMTPServerDisconnected: Connection unexpectedly closed
> >
>
> I saw a similar error when I was not following the server's
> authentication protocol -- either failing to authenticate when it
> wanted it, or authenticating when it didn't want it. Here's the code
> I use -- tested on both an Exchange server and on Comcast's SMTP
> servers. It assumes some globals (in all caps) which you need to set
> first.
>
> def emailGivenString(host=SMTP_HOST, fromAddr=FROM_ADDR,
>                       toAddr=TO_ADDR, subject='', body='', auth=False):
>      server = smtplib.SMTP(host)
>      if auth:
>          server.login('username', 'password')
>      outMessage = 'From: %s\rTo: %s\rSubject: %s\r%s' %
>                   (FROM_HEADER, TO_HEADER, subject, body)
>      server.sendmail(fromAddr, toAddr, outMessage)
>
> If this doesn't work, I second the previous suggestion of talking to
> the server admin.
>
> B.
>
> --
> Brendon Towle, Ph.D.   <Brendon at BrendonTowle.com>  +1-412-362-1530
> "Debugging is twice as hard as writing the code in the first place.
> Therefore,
> if you write the code as cleverly as possible, you are, by
> definition, not
> smart enough to debug it." - Brian W. Kernighan



well, this type of authentication might work.Because the same process
of sending mail with authentication worked when i used java mail
application so iam confident of the same thing works in python also.



From aisaac0 at verizon.net  Wed Sep  6 10:33:25 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Wed, 06 Sep 2006 14:33:25 GMT
Subject: change property after inheritance
Message-ID: <V_ALg.10274$YZ3.7565@trnddc03>

Suppose a class has properties and I want to change the
setter in a derived class. If the base class is mine, I can do this:
http://www.kylev.com/2004/10/13/fun-with-python-properties/
Should I? (I.e., is that a good solution?)

And what if I cannot change the base class?
How to proceed then?

Thanks,
Alan Isaac




From jaysherby at gmail.com  Fri Sep 15 19:36:23 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 16:36:23 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
Message-ID: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>

I'm having a problem using lambda to use a command with an argument for
a button in Tkinter.

                buttons = range(5)
		for x in xrange(5):
			buttons[x] = Button(frame, text=str(x+1), command=lambda:
self.highlight(x))
			buttons[x].pack(side=LEFT)

The buttons are correctly numbered 1 through 5, but no matter which
button I click on, it sends the number 4 as an argument to the
highlight function.  How can I correct this?

By the way, I've tried changing xrange to range with no success.



From johnjsal at NOSPAMgmail.com  Sat Sep 30 17:39:40 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 17:39:40 -0400
Subject: preemptive OOP?
In-Reply-To: <JZATg.3537$5i7.15@newsreading01.news.tds.net>
References: <e9USg.47$1n3.432@news.tufts.edu>
	<JZATg.3537$5i7.15@newsreading01.news.tds.net>
Message-ID: <451ee56a$0$16356$c3e8da3@news.astraweb.com>

Kent Johnson wrote:

> You struck a nerve here, I have seen so clearly at work the difference 
> between projects that practice YAGNI and those that are designed to meet 
> any possible contingency. It's the difference between running with 
> running shoes on or wet, muddy boots.

LOL. Yeah, I guess so. I kind of expected the answer to be "yes, always 
go with OOP in preparation for future expansion", but I should have 
known that Python programmers would be a little more pragmatic than that. :)


From webraviteja at gmail.com  Sat Sep 23 20:58:52 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 23 Sep 2006 17:58:52 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
Message-ID: <1159059532.335897.170500@d34g2000cwd.googlegroups.com>

> A trivial question - I have a working Python script that I have to
> invoke from C++ code. No fancy stuff - just run the whole script with
> its parameters. No callbacks, no signalling - nada, just
> stupid,primitive, straightforward call.
>
> And while there is a lot of help on embedding, I could not find out how
> to run script as a whole.SOS!!!!

System::Diagnostics::Process::Start



From http  Wed Sep  6 12:29:59 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 09:29:59 -0700
Subject: Secure Postgres access
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
Message-ID: <7xbqpthsag.fsf@ruckus.brouhaha.com>

Reid Priedhorsky <reid at reidster.net> writes:
> I know how to forward ports using SSH, but I don't like doing this because
> then anyone who knows the port number can connect to Postgres over the
> same tunnel. (I'm not the only user on the client machine.)

Wouldn't they need a database password?


From nick at craig-wood.com  Tue Sep 26 09:30:04 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Tue, 26 Sep 2006 08:30:04 -0500
Subject: R.S.I. solutions?
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
	<4nqrt0Fbp16mU1@uni-berlin.de>
Message-ID: <slrnehi8l8.4bt.nick@irishsea.home.craig-wood.com>

Diez B. Roggisch <deets at nospam.web.de> wrote:
>  Paddy schrieb:
> > All this keyboarding has finally caught up with me and I'm getting
> > aches in my fingers.
>  But I can share some other advice: go to a physiotherapist and let him 
>  show you some exercises for the back. My problems (both lower arms) 
>  stemmed from my back - even though that seems a bit strange at
>  first.

This is excellent advice... I was diagnosed with tendonitis over 5
years ago now.  I found the medical people generally hopeless, but the
physios really know their stuff (this is in the UK also).

I'm improving now though, but it is a long process.  I tried lots of
technical aids, but in the end it is the simple things that helped me
the most

1) See the physio.

2) Get your workplace right! chair height, screen height, distance to
keyboard etc.  The physio can advise here.

3) The physio recommended a rolled up towel as a wrist rest - for me
that is just the thing.  It is large and soft.

4) I swapped my mouse usage to the left hand (my right hand was
worse).  It took a few months to get used to but it feels totally
natural now.  I can now mouse with both hands just fine.

RSI is a complicated disease - there are lots of different forms of it
all caused by different things.  You'll need some professional advice
to sort it out.

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From johnjsal at NOSPAMgmail.com  Fri Sep 29 15:13:14 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 19:13:14 GMT
Subject: creating a small test server on my local computer
In-Reply-To: <451d684a$0$4516$e4fe514c@news.xs4all.nl>
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
Message-ID: <efeTg.56$1n3.620@news.tufts.edu>

Irmen de Jong wrote:
> John Salerno wrote:
>> Ok, this is completely unnecessary so I don't intend to get into stuff 
>> that's beyond my skill, but I'm wondering how simple it would be to 
>> use Python to create a server that runs on my computer so I can test 
>> my webpages (because otherwise I have to keep sending them to our IT 
>> person so he can upload them to the server).
> 
> Why do you need to use Python for the server?

Well, perhaps I don't know what I'm talking about. I'm on an XP machine 
and I just needed a way to test my web pages, and I thought Python could 
be used to create a server to do this. But I know nothing about network 
programming...


From freeed at gmail.com  Sat Sep  9 13:04:47 2006
From: freeed at gmail.com (Frederic Wenzel)
Date: Sat, 9 Sep 2006 10:04:47 -0700
Subject: pyserial problem: script stops reading
In-Reply-To: <020101c6d3eb$da564520$03000080@hendrik>
References: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>
	<5a8943c0609081825r203d08b5xa4a6225f2d56c337@mail.gmail.com>
	<020101c6d3eb$da564520$03000080@hendrik>
Message-ID: <5a8943c0609091004l318c61d6m2d69fcedcd8380ff@mail.gmail.com>

On 9/9/06, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
> | I wrote a script on Linux that uses pyserial to read status messages
> | from a serial line using readlines(). For now, it just displays what
> | it gets on stdout:
> | (...)
> | ser = serial.Serial(port=1,
> |                                  baudrate=1200,
> |                                  rtscts=1,
>
> if this is enabling hardware flow control  try turning it off - at 1200 baud you
> should not need it

Okay I disabled this for once.

> |
> | If the script does not time out there, I am not sure what else it is
> | doing. It seems to be in a wait state it does not get out of.
>
> Sounds more and more like flow control hassle - can you lay your hands on a
> break out box or a datascope?

Unfortunately not. I will run a few more tests without rtscts though.

I am actually not horribly worried about kicking the serial reading
service every once in a while, but it would be better if it detected
the "stall" state itself...


Thanks
Fred


From onurb at xiludom.gro  Tue Sep  5 04:15:15 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 05 Sep 2006 10:15:15 +0200
Subject: why have to "from compiler import *"
In-Reply-To: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
References: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
Message-ID: <44fd3214$0$31653$626a54ce@news.free.fr>

mark_galeck_spam_magnet at yahoo.com wrote:
> Hi,  why does
> 
>>>> import compiler
>>>> compileFile("foo.py")
> 
> complain name 'compileFile' not defined.  

Probably because it's not ?

import <modulename> imports the name <modulename> in the current
namespace. Then <modulename> let you access all the names defined in
<modulename> namespace. So in you're case, it should be:

>>>> import compiler
>>>> compiler.compileFile("foo.py")


> But
> 
>>> >from compiler import *
> 
> works. 

"from <modulename> import <somename>" directly loads <somename> into the
current namespace. The 'import *' loads all public names from
<modulename>.  And FWIW it's usually considered bad style (potential
name clash, and can makes hard to tell where a name is defined...)

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From flupke at nonexistingdomain.com  Tue Sep 26 11:00:06 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Tue, 26 Sep 2006 15:00:06 GMT
Subject: odbc DbiDate date conversion
In-Reply-To: <z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
	<1159278687.772964.245190@b28g2000cwb.googlegroups.com>
	<z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
Message-ID: <WfbSg.97382$Cd1.1251463@phobos.telenet-ops.be>

flupke schreef:
<snip>
When i do the same sql from a client, i get this: 1961-02-15
Seems ok.
If i check the catalog, the native field type is listed as 10 positions
and of type date.

Yet when i print it after i got the values i get this which looks very
weird (print "value ",str(i)," type ",type(i)):

    value  "main_kamer"."nummer" m"  type  <type 'DbiDate'>

The type is ok but the result of str(i) looks wrong.
Or is it due to conversion by str?

Regards,
Benedict


From google at mrabarnett.plus.com  Thu Sep 28 18:46:57 2006
From: google at mrabarnett.plus.com (MRAB)
Date: 28 Sep 2006 15:46:57 -0700
Subject: Resuming a program's execution after correcting error
In-Reply-To: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
References: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
Message-ID: <1159483617.159482.169770@i3g2000cwc.googlegroups.com>


Sheldon wrote:
> Hi.
>
> Does anyone know if one can resume a python script at the error point
> after the error is corrected?
> I have a large program that take forever if I have to restart from
> scratch everytime. The error was the data writing a file so it seemed
> such a waste if all the data was lost and must be recalculated again.
>
You could modify the program while you're debugging it so that instead
of, say:

    calculate data
    write data

you have:

    if saved data exists:
        load data
    else:
        calculate data
        save data
    write data

The pickle module would be useful here.

Matthew



From rdiaz02 at gmail.com  Wed Sep 27 06:46:18 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Wed, 27 Sep 2006 12:46:18 +0200
Subject: Battlefield Weapon Popularity Trend
In-Reply-To: <efdk3v$2ia$1@mlucom4.urz.uni-halle.de>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
	<mailman.784.1159348105.10491.python-list@python.org>
	<efdk3v$2ia$1@mlucom4.urz.uni-halle.de>
Message-ID: <624934630609270346m18395449s2e8b5896458798e8@mail.gmail.com>

On 9/27/06, Mirco Wahab <peace.is.our.profession at gmx.de> wrote:
> Thus spoke Ramon Diaz-Uriarte (on 2006-09-27 11:01):
>
> >> When the Samurai of medieval Japan were confronted
> >> with new 'battlefield language', e.g. early Shotguns,
> >> they resisted because one could push any peasant
> >
> > shouldn't this be "they [the Samurai] did not resist"?
>
> The "resisted" believing all the buzz,
> e.g.: "armies made of dudes with guns" ...
>

OK, I think I see it.

> (and tried to preserve their Art,
> which did not work in the end -
> "the Art of Killing" was replaced
> by "mass production of deaths" on
> the battlefield ...)

Yeap, that I saw.

Thansk,

R.

>
> Regards,
>
> M.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From Matthew.Warren at Digica.com  Fri Sep 29 04:55:48 2006
From: Matthew.Warren at Digica.com (Matthew Warren)
Date: Fri, 29 Sep 2006 09:55:48 +0100
Subject: BoaConstructor
Message-ID: <D4F9316ACC9D20489CC81D19B8A87D5B039FE56F@UKEX01.Digica.local>

..I'm just about to start a project, I have a threaded python app
currently around 3000 lines / 12-15 source files that is cli driven, and
I am about to start using boaConstructor to build a GUI around it.
 
Has anyone here any advice on wether boaConstructor is actually a good
tool for this? The only IDE I have used before was netbeans with Java,
and not very extensivley. I'm not neccesarily into getting a boat-load
of bells and whistles with my IDE, to start I will be using it generally
just as a tool to build a GUI and edit the code.
 
eventually, the App will become big and complicated.
 
 
Thanks,
 
MattW


This email is confidential and may be privileged. If you are not the intended recipient please notify the sender immediately and delete the email from your computer. 

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From steve at REMOVEME.cybersource.com.au  Mon Sep 25 05:33:24 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Mon, 25 Sep 2006 19:33:24 +1000
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
Message-ID: <pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>

On Sun, 24 Sep 2006 13:23:03 +0200, Ingo Linkweiler wrote:

>> The usual way to cope with this is sending out confirmation mails.  No
>> need to check if the address is syntactically correct beforehand.
> 
> yes, I do this allready. But it would be nice to do some checks before 
> to avoid wrong user inputs.

Because you like reinventing the wheel and doing the same work twice?
    
By memory, in an thread about the same topic just a few days ago, Fredrik
Lundh posted a link to Perl's FAQs that suggests a method for "validating"
email addresses: treat it like a password and ask the user to type it
twice. That will protect against simple typos and input errors.

For everything else, send to it and see what happens.


-- 
Steven D'Aprano 



From nomail at nixmail.com  Wed Sep 27 08:21:24 2006
From: nomail at nixmail.com (DarkBlue)
Date: Wed, 27 Sep 2006 20:21:24 +0800
Subject: baffling sql string
Message-ID: <451a6cc4@127.0.0.1>

Following is a code snippet from a pythoncard app
the problem is with the sql string called iq1
If either mysubject or mytalktext contains an 
apostrophe the update fails :
Example: mysubject="Let's Eat"  this fails
         mysubject="Lets Eat"   this works fine

What options do I have to avoid this issue but still
can use apostrophes in my input data ?

mysubject=self.components.TextField1.text  
mytalktext=self.components.TextArea1.text
mymsgno=self.myamsgno
iq1="update MSGTALK set msgdate='NOW',subject='%s',talktext='%s' where
msgno= %d " % (mysubject,mytalktext,mymsgno) 
try:
   self.cur.execute(iq1)
   con1.commit()
   self.components.TextArea2.appendText('Update ok\n')  
except:
   self.components.TextArea2.appendText('Problem during update command\n')            
   self.components.TextArea2.appendText(iq1)


(hope the intendation did not get too messed up )

Thanks 

   


From crankycoder at gmail.com  Tue Sep 19 15:45:38 2006
From: crankycoder at gmail.com (Victor Ng)
Date: Tue, 19 Sep 2006 15:45:38 -0400
Subject: py.test and HTML output
Message-ID: <a8bfd74c0609191245h3711b033veabf1184ac248309@mail.gmail.com>

Is there documentation anywhere on how to get py.test to emit nice
HTML output like the kind that they have for the PyPy project here:
http://codespeak.net/~hpk/pypy-testresult/ ?

Should I just redirect the stdout to a StringIO and parse the output
and generate the HTML myself?  I see that there's a htmlreport.py in
pypy, but I'm not sure how to use it.

vic

-- 
"Never attribute to malice that which can be adequately explained by
stupidity."  - Hanlon's Razor


From mikeowens at gmail.com  Mon Sep 11 16:59:08 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Mon, 11 Sep 2006 15:59:08 -0500
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
Message-ID: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>

I coworker pointed me to this thread.

>>>and why it isn't SQL.

>> It isn't SQL simply because SQL won't let you insert text
>> into a numeric field.

> Yup, I have to agree that's pretty crappy. (Makes mental note to limit
> use of SQLite).

Ever heard of check constraints? That's another feature of this
crappy, non-SQL database. They are one of at least three different
approaches you can take to implement strict typing using SQLite's SQL
and C library facilities.

mike at owens:/tmp# ./sqlite3
SQLite version 3.3.7
Enter ".help" for instructions
sqlite> create table stupid(x INTEGER check(typeof(x)=='integer'));
sqlite> create table little(x REAL check(typeof(x)=='real'));
sqlite> create table database(x INTEGER check(typeof(x)!='text'));

sqlite> -- insert text
sqlite> insert into stupid values('SQLite sucks!');
SQL error: constraint failed
sqlite>  insert into stupid values("1");
sqlite> --whattayaknow

sqlite> -- insert text
sqlite> insert into little values('This isn''t SQL!');
SQL error: constraint failed
sqlite> insert into little values(1.0);
sqlite> --how about that

sqlite> -- insert text
sqlite> insert into database values('Dynamic typing just doesn''t work!');
SQL error: constraint failed
sqlite> insert into database values(x'FFFF');
sqlite> -- something's going on here

sqlite> -- so what do we have in the tables?

sqlite> .h on
sqlite> .m col

sqlite> select x, typeof(x) from stupid;
x           typeof(x)
----------  ----------
1           integer

sqlite> -- integers only

sqlite> select x, typeof(x) from little;
x           typeof(x)
----------  ----------
1.0         real

sqlite> -- reals only

sqlite> select x, typeof(x) from database;
x           typeof(x)
----------  ----------
            blob

sqlite> -- anything but text

That darned dynamic typing. It works like almost any other database if
you want it to. (Makes mental note to spend more time reading SQLite
documentation before bashing SQLite.)


From harbingerofpeace at post.com  Sat Sep 23 23:49:43 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 20:49:43 -0700
Subject: What is the best way to "get" a web page?
In-Reply-To: <92nRg.4760$nX4.2074@tornado.texas.rr.com>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<92nRg.4760$nX4.2074@tornado.texas.rr.com>
Message-ID: <1159069783.563618.80380@k70g2000cwa.googlegroups.com>

> >I have the following code:
> >
> >>>> web_page = urllib.urlopen("http://www.python.org")
> >>>> file = open("temp.html", "w")
> >>>> web_page_contents = web_page.read()
> >>>> file.write(web_page_contents)
> >>>> file.close
> > <built-in method close of file object at 0xb7cc76e0>
> >>>>
> >
> > The file "temp.html" is created, but it doesn't look like the page at
> > www.python.org. I'm guessing there are multiple frames and my code did
> > not get everything. Can anyone point me to a tutorial or other
> > reference on how to "get" all of the html contents at a particular
> > page?
> >
> > Why did Python print the line after "file.close"?
> >
> > Thanks,
> > Pete
> >
>
> A. You didn't actually invoke the close method, you simply referenced it,
> which is why you got the output line after file.close.  Python is not VB.
> To call close, you have to follow it with ()'s, as in:
>
> file.close()

Ahhhh. Thank you very much!

> This will have the added benefit of flushing the output to temp.html,
> probably containing the missing content you were looking for.
>
> B. Don't name variables "file", or "list", "str", "dict", "int", etc.  Doing
> so masks global names of builtin data types.  Try "tempFile" instead.

Oh. Thanks again!
The file "temp.html" is definitely different than the first run, but
still not anything close to www.python.org . Any other suggestions?

Thanks,
Pete

> -- Paul



From python.sam at googlemail.com  Wed Sep 20 17:58:03 2006
From: python.sam at googlemail.com (sam)
Date: 20 Sep 2006 14:58:03 -0700
Subject: "list index out of range" error
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
	<pan.2006.09.20.21.54.45.550086@gmx.net>
Message-ID: <1158789483.004773.21840@k70g2000cwa.googlegroups.com>

yes, yes, of course, thank you. not sure what i thought i was doing
there.
i'll see if i can get it running now...



From johnjsal at NOSPAMgmail.com  Tue Sep 26 14:15:48 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 26 Sep 2006 18:15:48 GMT
Subject: Advice for a novice on making ambitious cross-platform GUI app
In-Reply-To: <1159293097.000144.267460@k70g2000cwa.googlegroups.com>
References: <1159200780.240509.270660@i42g2000cwa.googlegroups.com>
	<1159293097.000144.267460@k70g2000cwa.googlegroups.com>
Message-ID: <o7eSg.29$1n3.421@news.tufts.edu>

crystalattice wrote:

> I'm working on making an
> RPG from scratch and I'm the only one doing it, but I'm learning a lot
> and just keep asking questions.

Intriguing. Any tips on how you are going about learning the game 
programming aspects of doing this? I took a look at PyGame, but it 
seemed a little over my head.


From andrew-news at andros.org.uk  Sun Sep 10 12:56:56 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Sun, 10 Sep 2006 17:56:56 +0100
Subject: Algorithm Question
Message-ID: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>

This really an algorithm question more that a Python question, but it 
would be implemented in Python....

I have a list of strings, A. I want to find a set of strings B such that 
for any "a in A" there exists "b in B" such that b is a sub-string of a. 
But I also want to minimise T = sum_j t_j where

t_j = count of the number of elements in A which have b[j] as a sub-string

My guess is that finding the smallest possible T satisfying the 
constraint would be hard. However, for my application just keeping it 
reasonably small would help.

In my case the list A contains over two million addresses.

The (top down) heuristic approach I am tempted to employ is to start by 
dividing the entries in A into sets of tokens, then take the union of 
all these sets as a starting point for B. Then I would try to trim B by

1. looking for elements that I could remove while still satisfying the 
constraint

2. replacing two elements by a common sub-string if that reduced T

Anyway. It occurred to me that this might be a known problem. Any 
pointers gratefully received.

- Andrew



From quentel.pierre at wanadoo.fr  Sat Sep 30 04:43:37 2006
From: quentel.pierre at wanadoo.fr (Pierre Quentel)
Date: 30 Sep 2006 01:43:37 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
In-Reply-To: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
Message-ID: <1159605817.482377.291360@k70g2000cwa.googlegroups.com>

I am also shocked by Fredrick Lundh's impoliteness and think he makes
this group less friendly than I expected when I read this on
http://www.python.org/community/lists/:

"Rudeness and personal attacks, even in reaction to blatant flamebait,
are strongly frowned upon. People may strongly disagree on an issue,
but usually discussion remains civil"

This should apply to anyone, from the newbie to the most valuable
contributor to Python

Regards,
Pierre



From groups at theyoungfamily.co.uk  Wed Sep 27 06:27:04 2006
From: groups at theyoungfamily.co.uk (Ben)
Date: 27 Sep 2006 03:27:04 -0700
Subject: QuoteSQL
In-Reply-To: <efdhp7$uqq$1@lust.ihug.co.nz>
References: <slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
Message-ID: <1159352824.349483.140520@d34g2000cwd.googlegroups.com>


Lawrence D'Oliveiro wrote:
> In message <Xns984B6DC5B990Bduncanbooth at 127.0.0.1>, Duncan Booth wrote:
>
> > Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> >
> >> In message <Xns984B5837B9F7Aduncanbooth at 127.0.0.1>, Duncan Booth
> >> wrote:
> >>
> >>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> >>>
> >>>>     def EscapeSQLWild(Str) :
> >>>>         """escapes MySQL pattern wildcards in Str."""
> >>>>         Result = []
> >>>>         for Ch in str(Str) :
> >>>>             if Ch == "%" or Ch == "_" :
> >>>>                 Result.append("\\")
> >>>>             #end if
> >>>>             Result.append(Ch)
> >>>>         #end for
> >>>>         return "".join(Result)
> >>>>     #end EscapeSQLWild
> >>>
> >>> That doesn't quite work. If you want to stop wildcards being
> >>> interpreted as such in a string used as a parameter to a query, then
> >>> you have to escape the escape character as well.
> >>
> >> That's part of the separation of function. Note that the above
> >> function does not generate a MySQL string literal: you must still put
> >> it through the previously-defined SQLString routine, which will
> >> automatically escape all the specials added by EscapeSQLWild.
> >>
> > You are still missing the point. I'm not talking about generating a MySQL
> > string literal, I'm talking about preventing wildcards characters having
> > their special meaning when using the string as a parameter in
> > cursor.execute.
>
> But that's what cursor.execute will do if you use its parameter-substitution
> mechanism--generate a string literal.
>
> > You still have to escape the escape character...
>
> Which will be done by cursor.execute if you use its parameter-substitution
> mechanism.
>
> > Calling the SQLString routine in this situation would be wrong because it
> > would escape characters such as newline which must not be escaped.
>
> SQLString will convert newlines into the \n sequence in the generated string
> literal, which MySQL will interpret as a newline. cursor.execute's
> parameter-substitution mechanism would do exactly the same thing.

But cursor.execute does not necessarily do parameter-substitution. It
can send the data directly to the database with no escaping. In this
case, doing it yourself is a massive pessimization, and you're more
likely to get it wrong than the driver writers

Ben



From ldo at geek-central.gen.new_zealand  Sat Sep 23 07:51:06 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sat, 23 Sep 2006 23:51:06 +1200
Subject: "re" vs "sre"?
Message-ID: <ef371q$4ui$1@lust.ihug.co.nz>

I learned about Python regular expressions from the Web documentation
<http://docs.python.org/lib/lib.html>. This describes a module named "re".
Then I saw some code written by a colleague, and he was using a module
named "sre". I checked my Python 2.4.3 installation, and sure enough, I
have a module named "sre" as well as "re". Curious, I fired up an
interactive Python session, and looked to see what the docstrings were for
these modules. And for the "re" module, the help says:

    re - Minimal "re" compatibility wrapper.  See "sre" for documentation.

and "sre" seems to have the more complete set of docstrings.

So which one should we be using?


From richard.m.tew at gmail.com  Thu Sep 21 13:18:17 2006
From: richard.m.tew at gmail.com (Richard Tew)
Date: 21 Sep 2006 10:18:17 -0700
Subject: Is it possible to save a running program and reload next time ?
In-Reply-To: <mailman.386.1158824225.10491.python-list@python.org>
References: <mailman.386.1158824225.10491.python-list@python.org>
Message-ID: <1158859096.997655.217150@h48g2000cwc.googlegroups.com>

fdu.xiaojf at gmail.com wrote:
> I have a program which will continue to run for several days. When it is
> running, I can't do anything except waiting because it takes over most
> of the CUP time.
>
> Is it possible that the program can save all running data to a file when
> I want it to stop, and can reload the data and continue to run from
> where it stops when the computer is free ?

Yes.  Stackless Python can allow you to pickle running code and
to save it to disk and load it and continue running it from where it
left off.  It won't of course work if there is external state because
this will not be there, or necessarily still be relevant when the code
resumes.  So as long as you know the limitations and they suit
your uses, it should be usable for this.

http://www.stackless.com

Here's an example:

import stackless
import cPickle
import time

def f():
    n = 0
    while True:
        n += 1
        stackless.schedule()

t = stackless.tasklet(f)()

while True:
    # Run the tasklet until it yields or dies.
    t.run()
    # Yield to the operating system.
    try:
        time.sleep(0.1)
    except KeyboardInterrupt:
        if not t.alive:
            print "Tasklet unexpectedly dead"
            break

        # Serialise the running tasklet.
        v = cPickle.dumps(t)
        # Kill the old version.
        t.kill()

        # y / enter = continue
        # anything else = exit
        # otherwise stalled
        s = raw_input("Continue? [y]:").lower()
        if s not in ("y", ""):
            break

        t = cPickle.loads(v)

Unfortunately KeyboardInterrupt or probably any other
exception as a way of interrupting the running code is
problematic as it will kill the running tasklet if it happens
there instead of during the sleep.

Hope this helps,
Richard.



From cliff at develix.com  Tue Sep 12 15:55:34 2006
From: cliff at develix.com (Cliff Wells)
Date: Tue, 12 Sep 2006 12:55:34 -0700
Subject: best small database?
In-Reply-To: <1158089355.730894.51330@m73g2000cwd.googlegroups.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<1158003527.979849.240080@m73g2000cwd.googlegroups.com>
	<1158089355.730894.51330@m73g2000cwd.googlegroups.com>
Message-ID: <1158090934.3622.0.camel@devilbox>

On Tue, 2006-09-12 at 12:29 -0700, Kay Schluehr wrote:

> Just one stupid remark since the limits of my language are the limits
> of my world: I've not the slightest association with the seemingly
> nonsense word "buzhug" and don't even know how to pronounce it
> correctly. Would you have the kindness to enlighten me/us ?

I simply assumed it was "guhzub" backwards.

Cliff

-- 



From eric_brunel at despammed.com  Wed Sep 27 10:14:14 2006
From: eric_brunel at despammed.com (Eric Brunel)
Date: Wed, 27 Sep 2006 16:14:14 +0200
Subject: How to change menu text with Tkinter?
References: <1159363771.905537.224780@d34g2000cwd.googlegroups.com>
Message-ID: <op.tgji501prqur0o@eb.pragmadev>

On Wed, 27 Sep 2006 15:29:32 +0200, Phil Schmidt  
<phil_nospam_schmidt at yahoo.com> wrote:

> I am making a little Tkinter GUI app that needs to be in several
> languages (english, french, etc.), adjustable at runtime via a menu
> pick to select the language. The only way I can see to change text in
> the menus entries is to destroy them and recreate them usiing different
> labels. This seems very clunky though, and there must be a better way.
> Can anyone offer any pointers or a short example for how to do this?

Here is a way:

------------------------------------------------------------------
 from Tkinter import *

root = Tk()
mb = Menu(root)
root.configure(menu=mb)
fm = Menu(mb)
mb.add_cascade(label='File', menu=fm)

def chlg():
   mb.entryconfigure(1, label='Fichier')
   fm.entryconfigure(1, label='Changer de langue')
   fm.entryconfigure(2, label='Quitter')

fm.add_command(label='Change language', command=chlg)
fm.add_command(label='Quit', command=root.quit)

root.mainloop()
------------------------------------------------------------------

Note that the entry indices start at 1 because of the 'tearoff' entry that  
is always created in a menu. If you specify the option tearoff=0 when  
creating the menus, indices will start ot 0.

But Marc's answer still applies: it's a lot of work for something that  
will usually be configured once. So requiring to restart the tool when the  
UI language changes should be acceptable.

> Thanks,
> Phil

HTH
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From metaperl at gmail.com  Wed Sep 13 14:24:05 2006
From: metaperl at gmail.com (metaperl)
Date: 13 Sep 2006 11:24:05 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <1hlki4l.hxeyzim53ewmN%aleax@mac.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1hlki4l.hxeyzim53ewmN%aleax@mac.com>
Message-ID: <1158171845.820805.35810@d34g2000cwd.googlegroups.com>

One way to avoid the issue I brought up is for the syntax to be very
regular... like Lisp or Tcl:

set class "algebra"

(setq class "algebra")



From eddie at holyrood.ed.ac.uk  Tue Sep 12 14:52:52 2006
From: eddie at holyrood.ed.ac.uk (Eddie Corns)
Date: Tue, 12 Sep 2006 18:52:52 +0000 (UTC)
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
	<mailman.306.1158021619.5279.python-list@python.org>
	<3qoNg.820$5i7.307@newsreading01.news.tds.net>
	<rNOSPAMon-C3CBCE.22384311092006@news.gha.chartermi.net>
	<mailman.325.1158052624.5279.python-list@python.org> <rNOSPAMon-4
Message-ID: <ee6vm4$85u$1@scotsman.ed.ac.uk>

Ron Garret <rNOSPAMon at flownet.com> writes:

>In article <mailman.325.1158052624.5279.python-list at python.org>,
> Steve Holden <steve at holdenweb.com> wrote:

>> I wouldn't necessarily say you are wrong here, It's just that the cgi 
>> module has sort of "just growed", so it isn't conveniently factyored for 
>> reusability in other contexts. Several people (including me) have taken 
>> a look at it with a view to possible re-engineering and backed away 
>> because of the difficulty of maintaining compatibility. Python 3K will 
>> be an ideal oppoertunity to replace it, but until then it's probably 
>> going to stay in the same rather messy but working state.

>It's not necessary to re-engineer cgi, just cutting and pasting and 
>editing the code as I've done would seem to suffice.

>But all I'm really looking for here at this point is confirmation that 
>I'm not in fact doing something stupid.  In the past I've found that 
>nine times out of ten if I find myself wanting to rewrite or add 
>something to a Python module it's an indication that I'm doing something 
>wrong.

Well if it's any consolation; that's exactly what I did - cut about 7 lines
from CGIHTTPSERVER into my do_POST method.  Maybe we're both stoopid.  This
was at least 3 years ago before I moved on to Quixote and then
CherryPy/TurboGears but I recall thinking at the time that it was probably
just one of those little cracks that show up from time to time in the library
(there aren't so very many of them).

Eddie


From OMEGATOBE at aol.com  Sun Sep 17 15:58:52 2006
From: OMEGATOBE at aol.com (OMEGATOBE at aol.com)
Date: Sun, 17 Sep 2006 15:58:52 EDT
Subject: Ron Grossi: God is not a man
Message-ID: <c6a.225d91.323f02fc@aol.com>

Try this website:  HiddenMeanings.com
 
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From steve at holdenweb.com  Tue Sep 26 07:12:04 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 07:12:04 -0400
Subject: A critique of cgi.escape
In-Reply-To: <slrnehhtdv.loa.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>	<mailman.579.1159199258.10491.python-list@python.org>	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>	<mailman.581.1159200379.10491.python-list@python.org>	<slrnehg086.7sa.jon+usenet@snowy.squish.net>	<mailman.585.1159204290.10491.python-list@python.org>	<slrnehg3v0.7sa.jon+usenet@snowy.squish.net>	<mailman.636.1159253196.10491.python-list@python.org>
	<slrnehhtdv.loa.jon+usenet@snowy.squish.net>
Message-ID: <45190B04.1050607@holdenweb.com>

Jon Ribbens wrote:
> In article <mailman.636.1159253196.10491.python-list at python.org>, Steve Holden wrote:
> 
>>>I would have hoped that people don't treat that as a licence to be
>>>obnoxious, though. I am aware of Fredrik's history, which is why I
>>>was somewhat surprised and disappointed that he was being so rude
>>>and unpleasant in this thread. He is not living up to his reputation
>>>at all. Maybe he's having a bad day ;-)
>>
>>I generally find that Fredrik's rudeness quotient is satisfactorily 
>>biased towards discouraging ill-informed comment.
> 
> 
> It's a pity he's being rude when presented with well-informed comment
> then.
> 
> 
>>As far as rudeness goes, I've found your approach to this discussion
>>to be pretty obnoxious, and I'm generally know as someone with a
>>high tolerance for idiotic behaviour.
> 
> 
> Why do you say that? I have confined myself to simple logical
> arguments, and been frankly very restrained when presented with
> rudeness and misunderstanding from other thread participants.
> In what way should I have modified my postings?

Please allow me to apologise. I have clearly been confusing you with 
someone else. A review of your contributions to the thread confirms your 
asertion.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From richardjones at optushome.com.au  Tue Sep 19 19:00:31 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Wed, 20 Sep 2006 09:00:31 +1000
Subject: Cheese Shop Registration error
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
	<450f165c$0$5111$afc38c87@news.optusnet.com.au>
	<1158618349.740529.181620@e3g2000cwe.googlegroups.com>
Message-ID: <4510768f$0$11973$afc38c87@news.optusnet.com.au>

John Machin wrote:
> | >>> int("6A61E3AD")
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: invalid literal for int(): 6A61E3AD
> | >>> int("6A61E3AD", 16)
> 1784800173
> 
> What am I missing?

Ah, thankyou! I, on the other hand, looked at that code several times and
saw nothing ;)

I've fixed the code and it'll be fixed on the server soon (once apache
restarts itself).


    Richard



From antoine at vo.lu  Tue Sep 26 06:06:38 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Tue, 26 Sep 2006 12:06:38 +0200
Subject: ruby %w equivalent
In-Reply-To: <MPG.1f824ba4ccb5f49989687@news.individual.de>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
	<MPG.1f824ba4ccb5f49989687@news.individual.de>
Message-ID: <4518fba6$1@news.vo.lu>

Thorsten Kampe wrote:
> * John Machin (24 Sep 2006 15:32:20 -0700)
>> Antoine De Groote wrote:
>>> is there a python equivalent for the ruby %w operator?
>>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>>
>> | >>> "a b c".split()
>> | ['a', 'b', 'c']
>>
>> ... appears to match your single example.
> 
> Something wrong with "list('abc')"? Or is it too simple?!
> 
> Thorsten

As far as I can tell this works for single characters only. You're not 
able to split words, as in "one two three".split().

Regards,
antoine


From chris.cavalaria at free.fr  Mon Sep 25 10:55:57 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Mon, 25 Sep 2006 16:55:57 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <mailman.572.1159194377.10491.python-list@python.org>
References: <ef5hsc$8ig$1@news01.versatel.de>	<4nn3ceFb3d5fU1@individual.net>	<ef5nop$aoh$1@news01.versatel.de>	<pan.2006.09.24.11.04.35.54758@gmx.net>	<ef5pqm$bc8$1@news01.versatel.de>	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>	<4517e385$0$10996$636a55ce@news.free.fr>
	<mailman.572.1159194377.10491.python-list@python.org>
Message-ID: <4517ede7$0$23410$636a55ce@news.free.fr>

Steve Holden a ?crit :
> Christophe wrote:
>> Steven D'Aprano a ?crit :
>>
>>> By memory, in an thread about the same topic just a few days ago, 
>>> Fredrik
>>> Lundh posted a link to Perl's FAQs that suggests a method for 
>>> "validating"
>>> email addresses: treat it like a password and ask the user to type it
>>> twice. That will protect against simple typos and input errors.
>>
>>
>> I hate that thing. When I see that, I type my email once and 
>> copy/paste into the second edit box. This is useless AND annoying at 
>> the same time.
> 
> Probably safe to say it's a little less useful when the text field 
> contents are visible, but the classic validator for hidden fields.
> 
> It might surprise you to realise that not everyone in the world is a 
> touch typist, and for them (since they are often looking at the keyboard 
> rather than the screen) it's not an unreasonable validator.

Well, if they have a hard time using a keyboard, I've no doubts they 
will love using cut&paste to cut nearly in half the time needed to fill 
out your form :)


From apardon at forel.vub.ac.be  Fri Sep 29 08:31:25 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 29 Sep 2006 12:31:25 GMT
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
	<mailman.845.1159401951.10491.python-list@python.org>
	<roy-491DC0.20514927092006@reader2.panix.com>
Message-ID: <slrnehq4gt.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-28, Roy Smith <roy at panix.com> wrote:
> In article <mailman.845.1159401951.10491.python-list at python.org>,
>  "Carl J. Van Arsdall" <cvanarsdall at mvista.com> wrote:
>
>> > Things like decorators and metaclasses certainly add power, but they add 
>> > complexity too.  It's no longer a simple language.
>> >   
>> Well, I think a simple language is a language that makes the simple 
>> things simple and some of the complex things simple.  But I also like a 
>> language where, if I need it, I can tap into some raw power and do that 
>> really wild stuff.  So its simple to use if that's all you need yet 
>> offers the complexity to get things done that a purely "simple" language 
>> can't do.  I'd say its as simple as you want it to be :)
>
> The problem is, if the complex features are there, people will use them.  
> On any large project, there will always be some people who revel in using 
> every obscure feature of a language.  That forces everybody else on the 
> team (and all future members of the team) to know (or learn) those features 
> in order to be able to use and maintain the code base.

I would think that this kind of issues is the responsibility of the
project leader. Otherwise you might as well remove the possibilty
of a recursive function. There may always be someone that writes complicated
recursive functions whenever a simple iterative solution would do fine.

-- 
Antoon Pardon


From johnjsal at NOSPAMgmail.com  Fri Sep 22 09:57:49 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 22 Sep 2006 13:57:49 GMT
Subject: noob question
In-Reply-To: <1158929155.890221.107680@i3g2000cwc.googlegroups.com>
References: <1158929155.890221.107680@i3g2000cwc.googlegroups.com>
Message-ID: <xZRQg.14$1n3.211@news.tufts.edu>

xandeer wrote:
> where is a good open-source project website?
> thank-you
> (sorry for being so annoying)(if I'm annoying)(if not then I'm not
> sorry)
> 
sourceforge.net


From horpner at yahoo.com  Mon Sep 11 11:04:03 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 11 Sep 2006 17:04:03 +0200
Subject: Algorithm Question
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
Message-ID: <slrnegaunc.1dg.horpner@FIAD06.norwich.edu>

On 2006-09-10, Andrew McLean <andrew-news at andros.org.uk> wrote:
> This really an algorithm question more that a Python question,
> but it would be implemented in Python....

In that case, try comp.programming.  But still...

> I have a list of strings, A. I want to find a set of strings B
> such that for any "a in A" there exists "b in B" such that b is
> a sub-string of a. But I also want to minimise T = sum_j t_j
> where
>
> t_j = count of the number of elements in A which have b[j] as a
> sub-string
>
> My guess is that finding the smallest possible T satisfying the
> constraint would be hard. However, for my application just
> keeping it reasonably small would help.
>
> In my case the list A contains over two million addresses.

I'm afraid I don't understand your description.

How about an example of B for some A?

A = ["abb", "bbc"]
B = ["a", "ab", "abb", "b", "bb", "bbc", "bc", "c"]

Is that what you're after?

-- 
Neil Cerutti


From uymqlp502 at sneakemail.com  Wed Sep 13 19:26:57 2006
From: uymqlp502 at sneakemail.com (Russ)
Date: 13 Sep 2006 16:26:57 -0700
Subject: parameter files
Message-ID: <1158190017.832356.180050@h48g2000cwc.googlegroups.com>

I have a python module (file) that has a set of parameters associated
with it. Let's say the module is called "code.py." I would like to keep
the parameter assignments in a separate file so that I can save a copy
for each "run" without having to save the entire code.py file. Let's
say the parameter file is called "parameters.py."

Normally, code.py would simply import the parameters.py file. However,
I don't want the parameters to be accessible to any other file that
imports the code.py file. to prevent such access, I preface the name of
each parameter with an underscore. But then the parameters aren't even
visible in code.py! So I decided to use "execfile" instead of import so
the parameters are visible.

That solved the problem, but I am just wondering if there is a better
and/or more standard way to handle a situation like this. Any
suggestions? Thanks.



From MonkeeSage at gmail.com  Thu Sep 21 06:11:18 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 21 Sep 2006 03:11:18 -0700
Subject: Can I inherit member variables?
In-Reply-To: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
Message-ID: <1158833478.915272.88700@e3g2000cwe.googlegroups.com>


l... at cam.ac.uk wrote:
> When I run my code from within the derived class, self.weight
> and self.colour are not  inherited (although methods are inherited as I
> would have expected).

Animal is never initialized and you're not passing weight and color
into it anyway. You need something like:

class animal: # (object): # <- new-style class
  def __init__(self, weight, colour):
    self.weight = weight
    self.colour = colour

class bird(animal):
  def __init__(self, weight, color, wingspan):
    #super(bird, self).__init__(weight, color) # <- new-style init
    animal.__init__(self, weight, color) # <- old-style init
    self.wingspan = wingspan
    print self.weight, self.colour, self.wingspan

class fish(animal):
  def __init__(self, weight, color, length):
    #super(fish, self).__init__(weight, color)
    animal.__init__(self, weight, color)
    self.length = length
    print self.weight, self.colour, self.length

HTH,
Jordan



From vatamane at gmail.com  Sat Sep  9 02:54:02 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 8 Sep 2006 23:54:02 -0700
Subject: Building Python Based Web Application
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
	<mailman.183.1157752647.5279.python-list@python.org>
	<1157755872.665137.230470@m73g2000cwd.googlegroups.com>
Message-ID: <1157784842.928268.295850@h48g2000cwc.googlegroups.com>

The most modest way is to use pure Python and interface via CGI with
the web. I would start there.

As you code you will find yourself saying "I wonder if a framework is
out there that already has automated this specific process (say
templating)?", well then you can search and find such a framework.

If you pick a framework you are not familiar with right from the start
then besides your original problem that you want o solve, you have
another problem -- that of learning a new framework.   You will end up
molding your problem to some framework (this is not necessarily a very
bad thing) rather than finding a framework that helps you solve the
problem.

--Nick V.


John Henry wrote:
> Hi folks.
>
> I am interested on this topic as well.
>
> If my application is not database related, what would be a good choice?
>
> I have clients that wish to use my Python applications but I am not
> willing to give them the code.  So, I am thinking about setting it up
> as a web based application and let them run it from their browser.   If
> things go well, may be I can charge them for usage later.
>
> The application will involve getting a data file from the user, do some
> processing, and return a result file to the user.   Very modest - to
> start.



From sjdevnull at yahoo.com  Wed Sep 27 13:11:58 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 27 Sep 2006 10:11:58 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <bovSg.32$1n3.436@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
	<roy-055E4F.20055226092006@reader2.panix.com>
	<1159337418.630332.80100@k70g2000cwa.googlegroups.com>
	<bovSg.32$1n3.436@news.tufts.edu>
Message-ID: <1159377118.407619.312680@d34g2000cwd.googlegroups.com>

John Salerno wrote:
> sjdevnull at yahoo.com wrote:
>
> > Yes, and making sure that the first several you learn are disparate in
> > their common idioms and programming models is incredibly worthwile to
> > your development as a programmer IMO.
>
> You're right about that. While I'm definitely no expert in it, I did
> start learning C# last year (even before I started with Python), and
> though I never got too far with it, it was a great experience to learn a
> language like that, and then move on to something as different as
> Python. It really helped me to see how things are done differently given
> the type of language you are using.

Try learning a really different language next.  ML would be
enlightening, or Forth.



From bradfordh at gmail.com  Thu Sep  7 14:48:03 2006
From: bradfordh at gmail.com (Tempo)
Date: 7 Sep 2006 11:48:03 -0700
Subject: Extracting text from a string
In-Reply-To: <edpou4$41s$1@newsreader2.netcologne.de>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
	<edpou4$41s$1@newsreader2.netcologne.de>
Message-ID: <1157654883.477932.142850@p79g2000cwp.googlegroups.com>

Okay, so it sounds like I am in the right direction. However, I am not
sure that the text is in a string or some other format becasue the
string is enclosed in "[" and "]", not in ' '.



From fredrik at pythonware.com  Mon Sep 25 07:51:55 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 13:51:55 +0200
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
Message-ID: <ef8fsr$3ep$1@sea.gmane.org>

<altemurbugra at gmail.com> wrote:

> is it possible to make search on for example on google without api with
> a list of words
> 1- there is word list
> 2- the script will take the words from the list by turn
> 3-it iwll make the search
> 4-will get results
> 5-will write the results as xml file.

    http://www.google.com/terms_of_service.html

    "You may not send automated queries of any sort to Google's system without express
    permission in advance from Google."

</F> 





From heikki at osafoundation.org  Wed Sep  6 17:14:54 2006
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Wed, 06 Sep 2006 14:14:54 -0700
Subject: Cross-platform application restart?
Message-ID: <B5mdnYOdBdD0p2LZnZ2dnUVZ_sGdnZ2d@comcast.com>

Is there any way to restart a Python (GUI) application that would work
on Windows, Mac OS X and Linux? I'd like to provide a "restart" button
to a dialog that would restart the application to pick new changes or
start with different options.

-- 
  Heikki Toivonen


From istvan.albert at gmail.com  Mon Sep  4 10:25:40 2006
From: istvan.albert at gmail.com (Istvan Albert)
Date: 4 Sep 2006 07:25:40 -0700
Subject: Twisted vs POS (Plain-old sockets)
References: <d416abde0609030019u5a75d6b1mdc809c88284370da@mail.gmail.com>
	<m2ac5g6plq.fsf@mail.a-nugget.de>
Message-ID: <1157379940.231601.185700@e3g2000cwe.googlegroups.com>

Guido Goldstein wrote:

> You might have a look at asyncore/asychat in the standard library.
> It does the async stuff for you and it's easy to understand and to
> use.

or  Allegra might work

http://laurentszyster.be/blog/allegra/

its anti-twisted melodrama comes at no extra charge.

i.



From jarausch at skynet.be  Mon Sep  4 10:00:33 2006
From: jarausch at skynet.be (Helmut Jarausch)
Date: Mon, 04 Sep 2006 16:00:33 +0200
Subject: upgrade 2.4 -> 2.5 HowTo
In-Reply-To: <4m2jdkF481eqU1@news.dfncis.de>
References: <44fbdd29$0$28386$ba620e4c@news.skynet.be>
	<4m2jdkF481eqU1@news.dfncis.de>
Message-ID: <44fc3178$0$28400$ba620e4c@news.skynet.be>

Sibylle Koczian wrote:
> Helmut Jarausch schrieb:
>> Hi,
>>
>> what has to be done for upgrading from Python 2.4 to 2.5?
>>
>> - How can I find out which packages (in addition to the core packages)
>> have been
>>   installed up to now
>> - Can I just copy   /usr/local/lib/python2.4/site-packages  to
>>                     /usr/local/lib/python2.5 ?
>>
>> Many thanks for a hint,
>>
> 
> Which OS?
> 
> Windows: control panel / software will list all python packages which
> came with separate installers.
> 
> Linux: the package manager of your distribution should tell you what's
> installed.
> 

It's Linux.
Thanks, but I don't have a package manager. I'm working with Linux-From-Scratch.


-- 
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany


From tim at tdw.net  Thu Sep  7 10:14:14 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 7 Sep 2006 15:14:14 +0100
Subject: sending emails using python
In-Reply-To: <B51734183.306.7705.3@mx-extra>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
	<slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>
	<12g07gf97898rff@corp.supernews.com> <B51734183.306.7705.3@mx-extra>
Message-ID: <9afea2ac0609070714t1fe195b6wccfdc0c74f5ebc47@mail.gmail.com>

On 07/09/06, Hari Sekhon <hpsekhon at googlemail.com> wrote:
>
>  Grant Edwards wrote:
>  On 2006-09-07, Sybren Stuvel
> <sybrenUSE at YOURthirdtower.com.imagination> wrote:
>
>
>  Tim Williams enlightened us with:
>
>
>  Can you send email via it using outlook express or a similar
> POP3/IMAP mail client?
>
>  Wouldn't you use a SMTP client to send email?
>
>  I would, but I don't use exchange server. :)
>
> The one exchange server I used in the past didn't accept SMTP
> mail.
>
>
>  errr, I used to admin Exchange, if it does accept SMTP then how could it
> function as a live mail server?

Did you mean *doesn't accept*  ??

There are a couple of possibilities at least,   of the top of my head:

* The IMC / IMS  (smtp connector) is located on a different server
within its Exchange organisation,  or a DMZ'ed exchange server that is
only used for SMTP.

* The server doesn't accept SMTP from local IP ranges,  only from
external (ie inbound email)

Outlook / Exchange clients use MAPI,  internal SMTP is only a
requirement if you have non-MAPI clients sending email through the
server.

HTH :)


From martin at v.loewis.de  Wed Sep 13 11:55:04 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 13 Sep 2006 17:55:04 +0200
Subject: pickle and instancemethod objects
In-Reply-To: <FY6dnUU7mqlhg5XYnZ2dnUVZ_tKdnZ2d@comcast.com>
References: <FY6dnUU7mqlhg5XYnZ2dnUVZ_tKdnZ2d@comcast.com>
Message-ID: <450829d9$0$18647$9b622d9e@news.freenet.de>

Steven Bethard schrieb:
> Does this approach seem sound?  Am I going to run into some weird
> problems doing it this way?

It's good, but I think rebuilding the object through
new.instancemethod should be even better.

py> class A:
...   def f(self):print "A"
...
py> class B(A):
...   def f(self):print "B"
...
py> b=B()
py> b.f
<bound method B.f of <__main__.B instance at 0xa7d728cc>>
py> x = new.instancemethod(A.__dict__['f'], b, A)
py> x
<bound method A.f of <__main__.B instance at 0xa7d728cc>>
py> x()
A
py> b.f()
B
py> x.im_func.__name__,x.im_class,x.im_self
('f', <class __main__.A at 0xa7d7002c>, <__main__.B instance at 0xa7d728cc>)

On unpickling x, you'ld get x.(B.f), not x.(A.f) with your
approach.

Not sure it matters much.

Regards,
Martin


From mensanator at aol.com  Sat Sep  2 16:57:37 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 2 Sep 2006 13:57:37 -0700
Subject: ANN: GMPY binaries for Windows 2.5
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
	<1157153938.998816.134300@b28g2000cwb.googlegroups.com>
	<1157174852.888065.79740@m79g2000cwm.googlegroups.com>
Message-ID: <1157230657.847894.213710@74g2000cwt.googlegroups.com>

casevh at comcast.net wrote:
> > > Notes
> > > ====
> > > They have not been extensively tested.
> >
> > They don't work. At least the Pentium4 binary doesn't work,
> > same problem as before. Is the patch installed?
>
> I found the problem. Updated binaries should be available in a couple
> of hours. I'll add a note to the web page. I tested the patch but then
> overwrote the patched file with the unpatched file.
>
> I should quit doing this late at night....
>
> Thanks for testing.

That's a relief. I've downloaded the 1.04a version and re-ran
all the tests where I first noticed divm() errors. I can't even
remember why I wrote this program but the important thing
is that it uses divm() with non-coprime parameters which
provokes the divm() bug.

import gmpy
import random
import operator

def product(a,b):
    return a*b

def gcdlist(X):
    mingcd = 999999
    for i in xrange(1,len(X)):
        g = gmpy.gcd(X[i-1],X[i])
        if g<mingcd: mingcd = g
    return mingcd

X = [8,16,20,24,40,72,84,92]
g = gcdlist(X)
s = sum(X)

print '       X:',X
print '     gcd:',g

N = 0
while N<s:
    N = g * random.randint(s,3333)
print '       N:',N

if N>s:
    C = [1 for i in X]
    diff = N-s
    done = False
    i = -1
    XL = -len(X)
    while not done:
        while diff>=X[i]:
            C[i] += 1
            diff -= X[i]
        if diff==0:
            done = True
        else:
            i -= 1
            if i<XL:
                done = True
    NN = sum(map(operator.__mul__,X,C))
    print '       X:',X
    print '       C:',C
    print '      NN:',NN
    print '    diff:',diff
    print
    if diff>0:
        p = 0
        q = 1
        done = False
        while not done:
            gpq = gmpy.gcd(X[p],X[q])
            if diff % gpq == 0:
                done = True
            else:
                q += 1
                if q==len(X):
                    p += 1
                    q = p + 1
        print 'p: %d    q: %d' % (p,q)
        a = gmpy.divm(diff,X[p],X[q])
        b = (X[p]*a - diff)/X[q]
        print 'a: %d    b: %d    X[p]: %d    X[q]: %d' %
(a,b,X[p],X[q])
        if C[q]==b:
            print 'non-zero adjustment'
            print 'a: %d    b: %d' % (a + X[q],b + X[p])
            C[p] += a + X[q]
            C[q] -= b + X[p]
        else:
            C[p] += a
            C[q] -= b
        NN = sum(map(operator.__mul__,X,C))
        print '       X:',X
        print '       C:',C
        print '      NN:',NN
        print

##    This is what a successful output should look like
##
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 4492
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 1, 2, 45]
##          NN: 4488
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [24, 1, -8, 1, 1, 1, 2, 45]
##          NN: 4492
##
##    X is a list of integers selected so that the GCD of the entire
list is >2.
##    N is selected to be greater than sum(X) and divisible by GCD(X).
##    C is initialized to [1,1,1,1,1,1,1,1].
##    NN is the sum of each X element multiplied by its corresponding C
##    element. The values of C are then adjusted until the difference
##    between N and NN is 0.
##
##    If a difference of 0 is unobtainable (in the example diff=4 is
smaller
##    than the smallest element of X), then the program solves a linear
##    congruence by first finding a pair of X whose GCD divides diff
##    (8 and 20). For the solution a=3, b=1, we add three to C[0] and
##    subtract 1 from C[2] making
##           C: [1, 1, 1, 1, 1, 1, 2, 45]
##    into
##           C: [4, 1, 0, 1, 1, 1, 2, 45]
##
##    But I don't want any 0s in the list, only positive and negative
##    integers. Thus, in this example, a 0 adjustment is made:
##           C: [24, 1, -8, 1, 1, 1, 2, 45]


Here is the divm() bug in action. Note that when complete, NN=6286
which does not match N=6296.


##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 6296
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 2, 1, 1, 65]
##          NN: 6292
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 0    X[p]: 8    X[q]: 20
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(5), 1, mpz(1), 1, 2, 1, 1, 65]
##          NN: 6286

Once the bug has corrupted gmpy, simple arithmetic no longer works:

##    >>> print gmpy.mpz(8)*gmpy.mpz(3)
##    6

Now, with the patch installed into version 1.04:

>>> import gmpy
>>> gmpy.version()
'1.04'
>>> gmpy.divm(4,8,20)
mpz(3)
>>> gmpy.divm(4,8,20)
mpz(3)

>>> gmpy.mpz(20)
mpz(20)
>>> gmpy.mpz(8)
mpz(8)
>>> gmpy.mpz(4)
mpz(4)

Good! Things are now back to normal.

Re-running the above program multiple times ensuring
that divm() gets called repeatedly with non-coprime
parameters:

## changing to gmpy 1.04
## divm() should be fixed now


##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 5420
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 1, 1, 56]
##          NN: 5416
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(24), 1, mpz(-8), 1, 1, 1, 1, 56]
##          NN: 5420
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 12328
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 1, 1, 1, 131]
##          NN: 12324
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 1, 1, 1, 1, 131]
##          NN: 12328
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 7448
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 1, 1, 1, 78]
##          NN: 7448
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 3212
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 1, 1, 32]
##          NN: 3208
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(24), 1, mpz(-8), 1, 1, 1, 1, 32]
##          NN: 3212
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 8648
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 1, 1, 1, 91]
##          NN: 8644
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 1, 1, 1, 1, 91]
##          NN: 8648
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 8756
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 2, 1, 1, 1, 92]
##          NN: 8752
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(24), 1, mpz(-8), 2, 1, 1, 1, 92]
##          NN: 8756
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 6740
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 2, 1, 1, 1, 70]
##          NN: 6736
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 2, 1, 1, 1, 70]
##          NN: 6740
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 6528
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 1, 1, 1, 68]
##          NN: 6528
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 3004
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 2, 1, 29]
##          NN: 3004
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 6772
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 2, 2, 1, 1, 70]
##          NN: 6768
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(24), 1, mpz(-8), 2, 2, 1, 1, 70]
##          NN: 6772
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 11320
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 2, 1, 1, 1, 1, 1, 120]
##          NN: 11320
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 2248
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 2, 1, 1, 21]
##          NN: 2244
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 1, 2, 1, 1, 21]
##          NN: 2248
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 4604
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 2, 1, 1, 1, 1, 1, 47]
##          NN: 4604
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 5820
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 2, 1, 1, 1, 60]
##          NN: 5816
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 2, 1, 1, 1, 60]
##          NN: 5820
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 4092
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 2, 1, 1, 2, 1, 1, 41]
##          NN: 4092
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 8048
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 2, 1, 1, 2, 1, 1, 84]
##          NN: 8048
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 1992
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 2, 1, 18]
##          NN: 1992
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 3740
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 2, 1, 37]
##          NN: 3740
##        diff: 0
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 3336
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 2, 1, 1, 1, 33]
##          NN: 3332
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 2, 1, 1, 1, 33]
##          NN: 3336
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 12460
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [2, 1, 1, 1, 2, 1, 1, 132]
##          NN: 12456
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(25), 1, mpz(-8), 1, 2, 1, 1, 132]
##          NN: 12460
##
##    >>> ================================ RESTART
================================
##    >>>
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##         gcd: 4
##           N: 9540
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [1, 1, 1, 1, 1, 2, 1, 100]
##          NN: 9536
##        diff: 4
##
##    p: 0    q: 2
##    a: 3    b: 1    X[p]: 8    X[q]: 20
##    non-zero adjustment
##    a: 23    b: 9
##           X: [8, 16, 20, 24, 40, 72, 84, 92]
##           C: [mpz(24), 1, mpz(-8), 1, 1, 2, 1, 100]
##          NN: 9540

In every case, NN ended up equal to N, so divm() appears to
be working correctly now.


I also ran my Mersenne Hailstone test to check performance
(since the last time I ran it, I've added a GB of Ram to
my computer and re-coded my programs to be non-recursive).
In my Collatz research, in the place where I use divm()
the parameters are always co-prime, so I used gmpy 1.01
for months without discovering the bug.


##    Python 2.4a3
##    gmpy.version: 1.01
##
##    Brute force search: gclass(2**i-1,xyz)
##    Find 1st Generation k Type [1,2] Mersenne Hailstone
##
##                2**5-1  generation: 1
##               2**29-1  generation: 2
##              2**245-1  generation: 3
##             2**2189-1  generation: 4
##            2**19685-1  generation: 5
##           2**177149-1  generation: 6
##
##    27.97 seconds
##
##    Closed form: Type12MH(k,i)
##    Find ith, kth Generation Type [1,2] Mersenne Hailstone
##    using the closed form equation
##
##    2**(6*((i-1)*9**(k-1)+(9**(k-1)-1)/2+1)-1)-1
##
##                2**5-1  generation: 1
##               2**29-1  generation: 2
##              2**245-1  generation: 3
##             2**2189-1  generation: 4
##            2**19685-1  generation: 5
##           2**177149-1  generation: 6
##          2**1594325-1  generation: 7
##         2**14348909-1  generation: 8
##        2**129140165-1  generation: 9
##       2**1162261469-1  generation:10
##
##    1.359 seconds
##
##    Verify Type12MH Hailstones:
##    Find ith, kth Generation Type (xyz) Hailstone
##    using the non-recursive equation
##
##
(gmpy.divm(y**(k-1)-prev_gen[2],y-x,y**(k-1))/y**(k-2))*xyz[1]**(k-1)+prev_gen[3]
##
##    where i=((hailstone-geni(k,1,xyz))/(xyz[1]**k))+1
##
##                2**5-1  generation: 1
##               2**29-1  generation: 2
##              2**245-1  generation: 3
##             2**2189-1  generation: 4
##            2**19685-1  generation: 5
##           2**177149-1  generation: 6
##          2**1594325-1  generation: 7
##         2**14348909-1  generation: 8
##        2**129140165-1  generation: 9
##       2**1162261469-1  generation:10
##
##    4.516 seconds

##    Python 2.5c1
##
##    gmpy.version: 1.04
##
##    Brute force search: gclass(2**i-1,xyz)
##    Find 1st Generation k Type [1,2] Mersenne Hailstone
##
##                2**5-1  generation: 1
##               2**29-1  generation: 2
##              2**245-1  generation: 3
##             2**2189-1  generation: 4
##            2**19685-1  generation: 5
##           2**177149-1  generation: 6
##
##    21.64 seconds
##
##    Closed form: Type12MH(k,i)
##    Find ith, kth Generation Type [1,2] Mersenne Hailstone
##    using the closed form equation
##
##    2**(6*((i-1)*9**(k-1)+(9**(k-1)-1)/2+1)-1)-1
##
##                2**5-1  generation: 1
##               2**29-1  generation: 2
##              2**245-1  generation: 3
##             2**2189-1  generation: 4
##            2**19685-1  generation: 5
##           2**177149-1  generation: 6
##          2**1594325-1  generation: 7
##         2**14348909-1  generation: 8
##        2**129140165-1  generation: 9
##       2**1162261469-1  generation:10
##
##    1.375 seconds
##
##    Verify Type12MH Hailstones:
##    Find ith, kth Generation Type (xyz) Hailstone
##    using the non-recursive equation
##
##
(gmpy.divm(y**(k-1)-prev_gen[2],y-x,y**(k-1))/y**(k-2))*xyz[1]**(k-1)+prev_gen[3]
##
##    where i=((hailstone-geni(k,1,xyz))/(xyz[1]**k))+1
##
##                2**5-1  generation: 1
##               2**29-1  generation: 2
##              2**245-1  generation: 3
##             2**2189-1  generation: 4
##            2**19685-1  generation: 5
##           2**177149-1  generation: 6
##          2**1594325-1  generation: 7
##         2**14348909-1  generation: 8
##        2**129140165-1  generation: 9
##       2**1162261469-1  generation:10
##
##    4.25 seconds


Great! Everything seems to work perfectly.

I really, really, REALLY appreciate your making Windows binaries
of gmpy. Since all my Collatz research is now dependent on gmpy,
I can't upgrade Python until gmpy is upgraded. And with the
compiler woes I've been reading about, I was afraid gmpy might
not ever be upgraded (for Windows).


> 
> Case



From larry.bates at websafe.com  Fri Sep  8 09:55:47 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 08 Sep 2006 08:55:47 -0500
Subject: split string problems
In-Reply-To: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>
References: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>
Message-ID: <45017663.4090202@websafe.com>

Tempo wrote:
> Hey. I am trying to grab the prices from the string below but I get a
> few errors when I try to do it: Take a look at the code and error
> messages below for me and thanks you in advanced to all that help.
> Thank you. Here's the code & error messages:
> 
>>>> p
> [<span class="sale">
> 					$14.99
> 				</span>, <span class="sale">
> 					$27.99
> 				</span>, <span class="sale">
> 					$66.99
> 				</span>, <span class="sale">
> 					$129.99
> 				</span>, <span class="sale">
> 					$254.99
> 				</span>]
>>>> p.split()[2]
> 
> Traceback (most recent call last):
>   File "<pyshell#11>", line 1, in -toplevel-
>     p.split()[2]
> AttributeError: 'ResultSet' object has no attribute 'split'
> 
The contents of p is rather "odd" looking.  It isn't html that
was read from a website (note the commas after </span>).  You
show it as if it is a list of strings, but the strings don't
have quotes around them.  How are you creating the object p?
If you would just get it into a single string (with something
like:

x=urllib.urlopen(url)
p=x.read()

then you can use elementree, or beautiful soup to get your
prices quite easily.

-Larry


From Alain.montmory at thalesgroup.com  Fri Sep 29 08:25:25 2006
From: Alain.montmory at thalesgroup.com (alain MONTMORY)
Date: Fri, 29 Sep 2006 14:25:25 +0200
Subject: "ValueError: Empty module name" on basic import
Message-ID: <451D10B5.4080102@thalesgroup.com>

Hello everybody,

I am a newbie to python so I hope I am at the right place to expose my 
problem..... :-[

I am working on linux mandrake 10.1 with python :
python -V
Python 2.3.4
I am trying o run the example which stay in the documentation in paragraph
http://www.python.org/doc/2.4.2/ext/pure-embedding.html 5.3 Pure Embedding
I download the code example from
http://www.python.org/doc/2.4.2/ext/run-func.txt
I call the file "TestOfficiel.c" and I compile it with :
gcc -g -I/usr/include/python2.3/ TestOfficiel.c -o TestOfficiel 
-lpython2.3 -ldl
all is OK (or seems to be...).
as stated in the documentation  I creat a file "TestPythonFoo.py" which 
contain
"
def multiply(a,b):
    print "Will compute", a, "times", b
    c = 0
    for i in range(0, a):
        c = c + b
    return c
"
I launch
./TestOfficiel ./TestPythonFoo.py multiply 3 2
and as a result :
ValueError: Empty module name
Failed to load "./TestPythonFoo.py"
if I try an absolute path to the python file :
./TestOfficiel `pwd`/TestPythonFoo.py multiply 3 2
I obtain :
ImportError: No module named 
/space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py
Failed to load 
"/space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py"
Of course the file exist :
[montmory at esoppe1 swigCallPython]$ ll 
/space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py
-rwxrwx--x  1 montmory esoppe 126 sep 29 14:04 
/space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py*

I found lot of post about "ValueError: Empty module name" but no clear 
solution (clear for me...).
What's wrong ?
my python version?
Additionnal informations :
gcc version 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)

Thanks for your help,

best regards,

Alain



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From andy.leszczynski at gmail.com  Wed Sep 27 18:39:06 2006
From: andy.leszczynski at gmail.com (andy.leszczynski at gmail.com)
Date: 27 Sep 2006 15:39:06 -0700
Subject: generator with subfunction calling yield
Message-ID: <1159396746.073994.28680@h48g2000cwc.googlegroups.com>

Hi,

I might understand why this does not work, but I am not convinced it
should not - following:

def nnn():
    print 'inside'
    yield 1

def nn():
    def _nn():
        print 'inside'
        yield 1

    print 'before'
    _nn()
    print 'after'


for i in nnn():
    print i

for i in nn():
    print i



gives results:

$ python f.py
inside
1
before
after
Traceback (most recent call last):
  File "f.py", line 18, in ?
    for i in nn():
TypeError: iteration over non-sequence

while I would expect:
$ python f.py
inside
1
before
inside
1
after

Any insight?

andy



From __peter__ at web.de  Tue Sep 12 05:16:51 2006
From: __peter__ at web.de (Peter Otten)
Date: Tue, 12 Sep 2006 11:16:51 +0200
Subject: Problems with email.Generator.Generator
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>
	<ee4cam$g9a$03$1@news.t-online.com>
	<mailman.291.1158007461.5279.python-list@python.org>
Message-ID: <ee5ts0$3c8$00$1@news.t-online.com>

Chris Withers wrote:

> Okay, more out of desperation than anything else, lets try this:
> 
> from email.Charset import Charset,QP
> from email.MIMEText import MIMEText
> from StringIO import StringIO
> from email import Generator,Message
> Generator.StringIO = Message.StringIO = StringIO
> charset = Charset('utf-8')
> charset.body_encoding = QP
> msg = MIMEText(u'Some text with chars that need encoding: \xa3','plain')
> msg.set_charset(charset)
> print repr(msg.as_string())
> u'MIME-Version: 1.0\nContent-Transfer-Encoding: 8bit\nContent-Type:
> text/plain; charset="utf-8"\n\nSome text with chars that need encoding:
> \xa3'
> 
> Yay! No unicode error, but also no use:
> 
>    File "c:\python24\lib\smtplib.py", line 692, in sendmail
>      (code,resp) = self.data(msg)
>    File "c:\python24\lib\smtplib.py", line 489, in data
>      self.send(q)
>    File "c:\python24\lib\smtplib.py", line 316, in send
>      self.sock.sendall(str)
>    File "<string>", line 1, in sendall
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in
> position 297: ordinal not in range(128)

Yes, it seemed to work with your original example, but of course you have to
encode unicode somehow before sending it through a wire. A severe case of
peephole debugging, sorry. I've looked into the email package source once
more, but I fear to understand the relevant parts you have to understand it
wholesale. 

As Max suggested, your safest choice is probably passing in utf-8 instead of
unicode.

Peter


From mensanator at aol.com  Mon Sep 18 13:41:20 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 18 Sep 2006 10:41:20 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
References: <mailman.232.1158591996.10491.python-list@python.org>
Message-ID: <1158601280.531452.296230@m73g2000cwd.googlegroups.com>


Carl Drinkwater wrote:
> Hi all,
>
> Code Golf's 12th challenge has just been added to the site.  It asks you
> to calculate the first 1,000 digits of Pi - Something I'm sure most of
> you have thought about, but never done.  You can see the challenge at :
>
>    http://codegolf.com/1000-digits-of-pi
>
> For those who haven't heard of codegolf.com, it can be described as
> "allowing you to show off your code-fu by trying to solve coding
> problems using the least number of keystrokes."
>
> The site currently supports Perl, PHP, Python and Ruby with Scheme to
> (hopefully) follow soon.  Your entries are automatically executed and
> scored - No need to wait for someone to validate your code.
>
> Other challenges include implementing the Vigenere Cipher, Prime
> factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer.  All
> of the challenges are competitive but there is still scope to well in
> them, even if you're new to the site.
>
> I hope some of you will find this interesting, and sorry for disturbing
> you if not!
>
> Have fun,
> Carl.

Here's a thought: for your next contest, why not issue a
                  challenge to see who can write a scoreboard
                  that actually works?



Overall:

This Challenge's Best Entries [View All]
(View the Overall | Perl | PHP | Python | Ruby leaderboard.)

Rank User       Size Language Score [?]
1st  primo       62  Ruby     10,000 (v12)
2nd  jix         65  Ruby      9,538 (v7)
3rd  MadOnion    92  Ruby      6,739 (v4)
4th  jojo       112  Ruby      5,535 (v6)
5th  zeriod     134  Ruby      4,626 (v6)
6th  kmeyer     151  Ruby      4,105 (v3)
7th  dseverin   159  Ruby      3,899 (v7)
8th  bearophile 165  Python    3,757 (v5)
9th  ToastyX    167  Php       3,712 (v20)
10th Leafy      181  Php       3,425 (v8)


Perl:

This Challenge's Best Entries [View All]
(View the Overall | Perl | PHP | Python | Ruby leaderboard.)

Rank User   Size  Language Score [?]
1st  _W_      183 Perl     10,000 (v2)
2nd  jojo     524 Perl      3,492 (v2)
3rd  zeriod 1,009 Perl      1,813 (v7)


PHP:

This Challenge's Best Entries [View All]
(View the Overall | Perl | PHP | Python | Ruby leaderboard.)

Rank User    Size  Language Score [?]
1st  ToastyX   167 Php      10,000 (v20)
2nd  Leafy     181 Php       9,226 (v8)
3rd  jojo      539 Php       3,098 (v3)
4th  Theory    660 Php       2,530 (v1)
5th  zeriod  1,002 Php       1,666 (v1)
6th  skauert 1,002 Php       1,666 (v1)
7th  Makan   1,002 Php       1,666 (v1)
8th  _W_     1,002 Php       1,666 (v4)
9th  Stormx  1,004 Php       1,663 (v3)


Python:

This Challenge's Best Entries [View All]
(View the Overall | Perl | PHP | Python | Ruby leaderboard.)

Rank User       Size Language Score [?]
1st  primo       69  Python   10,000 (v11)
2nd  bearophile 165  Python    4,181 (v5)
3rd  jojo       557  Python    1,238 (v1)


Ruby:

This Challenge's Best Entries [View All]
(View the Overall | Perl | PHP | Python | Ruby leaderboard.)

Rank User     Size Language Score [?]
1st  primo     62  Ruby     10,000 (v12)
2nd  jix       65  Ruby      9,538 (v7)
3rd  MadOnion  92  Ruby      6,739 (v4)
4th  jojo     112  Ruby      5,535 (v6)
5th  zeriod   134  Ruby      4,626 (v6)
6th  kmeyer   151  Ruby      4,105 (v3)
7th  dseverin 159  Ruby      3,899 (v7)
8th  will     544  Ruby      1,139 (v4)



From bradfordh at gmail.com  Thu Sep  7 19:21:51 2006
From: bradfordh at gmail.com (Tempo)
Date: 7 Sep 2006 16:21:51 -0700
Subject: split string problems
Message-ID: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>

Hey. I am trying to grab the prices from the string below but I get a
few errors when I try to do it: Take a look at the code and error
messages below for me and thanks you in advanced to all that help.
Thank you. Here's the code & error messages:

>>> p
[<span class="sale">
					$14.99
				</span>, <span class="sale">
					$27.99
				</span>, <span class="sale">
					$66.99
				</span>, <span class="sale">
					$129.99
				</span>, <span class="sale">
					$254.99
				</span>]
>>> p.split()[2]

Traceback (most recent call last):
  File "<pyshell#11>", line 1, in -toplevel-
    p.split()[2]
AttributeError: 'ResultSet' object has no attribute 'split'
>>>



From Maria.Reinhammar at accalon.com  Thu Sep 21 04:23:50 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 21 Sep 2006 01:23:50 -0700
Subject: Using py2exe to wrap a service?
In-Reply-To: <1158756139.688916.90020@m73g2000cwd.googlegroups.com>
References: <1158756139.688916.90020@m73g2000cwd.googlegroups.com>
Message-ID: <1158827030.354972.99600@i42g2000cwa.googlegroups.com>

Thanks guys! :o)

It seems that no module is missing since the Service starts and the
error message seem to indicate an error in the COM call to the AD.
I would expect some other exception..

I do have a separate thread for the asyncore.loop() as I otherwise
would risk a lockup.

I do not call pythoncom.CoInitialize ()  as I tend to expect a module
wrapping COM stuff to do that. Since I am not really into Windows, I
have to ask you, do I make a wrong assumption here?

Some further info that may be of interest:
python 2.4.3
active_directory 0.4
py2exe 0.6.5
pywin32 208
The Service code is taken from MyService.py supplied with py2exe as a
sample.

Rgrds//M



From richardjones at optushome.com.au  Tue Sep 19 20:48:38 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Wed, 20 Sep 2006 10:48:38 +1000
Subject: Cheese Shop Registration error
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
	<450f165c$0$5111$afc38c87@news.optusnet.com.au>
	<1158618349.740529.181620@e3g2000cwe.googlegroups.com>
	<4510768f$0$11973$afc38c87@news.optusnet.com.au>
	<1158709651.487843.9930@b28g2000cwb.googlegroups.com>
Message-ID: <45108fe6$0$22937$afc38c87@news.optusnet.com.au>

John Machin wrote:
> re.match("[A-Fa-f0-9]{8,8}", data.strip()) makes it plain what is
> intended ...

Indeed, thanks.


    Richard



From nogradi at gmail.com  Sat Sep 16 06:08:35 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 16 Sep 2006 12:08:35 +0200
Subject: something for itertools
In-Reply-To: <1158361110.726215.98250@i3g2000cwc.googlegroups.com>
References: <mailman.156.1158356427.10491.python-list@python.org>
	<1158361110.726215.98250@i3g2000cwc.googlegroups.com>
Message-ID: <5f56302b0609160308m69a83702m5d277e72caf59844@mail.gmail.com>

> > In a recent thread,
> > http://mail.python.org/pipermail/python-list/2006-September/361512.html,
> > a couple of very useful and enlightening itertools examples were given
> > and was wondering if my problem also can be solved in an elegant way
> > by itertools.
> >
> > I have a bunch of tuples with varying lengths and would like to have
> > all of them the length of the maximal and pad with None's. So
> > something like
> >
> > a = ( 1, 2, 3 )
> > b = ( 10, 20 )
> > c = ( 'x', 'y', 'z', 'e', 'f' )
> >
> > should turn into
> >
> > a = ( 1, 2, 3, None, None )
> > b = ( 10, 20, None, None, None )
> > c = ( 'x', 'y', 'z', 'e', 'f' )
> >
> > Of course with some len( ) calls and loops this can be solved but
> > something tells me there is a simple itertools-like solution.
> >
>
> Not the most readable one-liner of all times, but here it goes:
>
> a,b,c = zip(*map(None,a,b,c))
>

Thanks, that does the trick.


From __peter__ at web.de  Sat Sep 30 05:22:53 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 30 Sep 2006 11:22:53 +0200
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
	<7xk63l7p67.fsf@ruckus.brouhaha.com>
	<eflarf$nbe$01$1@news.t-online.com>
	<7xk63l3f63.fsf@ruckus.brouhaha.com>
Message-ID: <eflcu6$2n6$00$1@news.t-online.com>

Paul Rubin wrote:

> Peter Otten <__peter__ at web.de> writes:
>> >      all_heights = (block.height for block in stack if
>> >      block.is_marked()) if is_empty(all_heights):
>> >         raise SomeError("No marked block")
>> 
>> Such a function would have to rebind the generator:
> 
> Yeah, that's what I mean about generators not working the right way.
> 
>> You can make it work, but the result tends to be messy:
> 
> I think it's better underneath, but still syntactically ugly, to just
> defer the generator creation:
> 
>      all_heights = lambda:
>                      (block.height for block in stack if
>                      block.is_marked())

You still need the stop() trick to omit the heights after the marked block.

>      if is_empty(all_heights ()):
>          raise SomeError("No marked block")
>      height = sum(all_heights ())
> 
> Now sum and is_empty see two separate generators, so is_empty is
> straightforward:
> 
>      def is_empty(gen):
>         try:
>            gen.next()
>            return True
>         except StopIteration:
>            return False

Alternatively you can turn all_heights into a list (comprehension) which
makes the test trivial. 

I think it will be interesting to see how Python 3000's emphasis on
iterators will affect overall code complexity.

Peter


From metaperl at gmail.com  Thu Sep  7 16:56:28 2006
From: metaperl at gmail.com (metaperl)
Date: 7 Sep 2006 13:56:28 -0700
Subject: should urlparse return user and pass in separate components?
Message-ID: <1157662588.273505.316230@h48g2000cwc.googlegroups.com>

The urlparse with Python 2.4.3 includes the user and pass in the site
aspect of its parse:

>>> scheme, site, path, parms, query, fid = urlparse.urlparse("http://bill:james at docs.python.org/lib/module-urlparse.html")

>>> site
'bill:james at docs.python.org'


I personally would prefer that it be broken down a bit further. What
are existing opinions on this?



From this at is.invalid  Fri Sep  1 05:05:29 2006
From: this at is.invalid (ddtl)
Date: Fri, 01 Sep 2006 11:05:29 +0200
Subject: re.compile() doesn't work under Windows?
References: <h3lef25kbmd0ehobognupq0rg2f9fvpoch@4ax.com>
	<1157058453.919399.27480@m79g2000cwm.googlegroups.com>
Message-ID: <3ttff2l049megqcoauphf76kt1sc942l57@4ax.com>

Thanks everybody for pointing out the problem.
And indeed, the script was named differently on Linux.

ddtl.


From g.brandl-nospam at gmx.net  Mon Sep 25 16:36:49 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 22:36:49 +0200
Subject: ruby %w equivalent
In-Reply-To: <MPG.1f824ba4ccb5f49989687@news.individual.de>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
	<MPG.1f824ba4ccb5f49989687@news.individual.de>
Message-ID: <ef9el2$2sa$1@news.albasani.net>

Thorsten Kampe wrote:
> * John Machin (24 Sep 2006 15:32:20 -0700)
>>Antoine De Groote wrote:
>>> is there a python equivalent for the ruby %w operator?
>>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>>
>>
>>| >>> "a b c".split()
>>| ['a', 'b', 'c']
>>
>>... appears to match your single example.
> 
> Something wrong with "list('abc')"? Or is it too simple?!

It is quite unreliable for strings consisting of more than one char... ;)

Georg


From harbingerofpeace at post.com  Sat Sep 23 20:46:09 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 17:46:09 -0700
Subject: HTTP GET Explodes...
Message-ID: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>

I was running the HTTP GET example at
http://www.python.org/doc/current/lib/httplib-examples.html and ran
into a bit of trouble...

>>> import httplib  # This works.
>>> conn = httplib.HTTPConnection("www.python.org")  # This works.
>>> conn.request("GET", "/index.html")  # This does not work...

The errors I get are below. Any suggestions on how to get rid of the
errors? Thanks!

# Begin errors...
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.4/httplib.py", line 801, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python2.4/httplib.py", line 818, in _send_request
    self.putrequest(method, url, **skips)
  File "/usr/lib/python2.4/httplib.py", line 749, in putrequest
    self.putheader('Host', self.host.encode("idna"))
  File "/usr/lib/python2.4/encodings/__init__.py", line 96, in
search_function
    globals(), locals(), _import_tail)
  File "/usr/lib/python2.4/encodings/idna.py", line 6, in ?
    dots = re.compile(u"[\u002E\u3002\uFF0E\uFF61]")
  File "/usr/lib/python2.4/sre.py", line 180, in compile
    return _compile(pattern, flags)
  File "/usr/lib/python2.4/sre.py", line 225, in _compile
    p = sre_compile.compile(pattern, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 500, in compile
    code = _code(p, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 481, in _code
    _compile_info(code, p, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 459, in _compile_info
    _compile_charset(charset, flags, code)
  File "/usr/lib/python2.4/sre_compile.py", line 178, in
_compile_charset
    for op, av in _optimize_charset(charset, fixup):
  File "/usr/lib/python2.4/sre_compile.py", line 221, in
_optimize_charset
    return _optimize_unicode(charset, fixup)
  File "/usr/lib/python2.4/sre_compile.py", line 341, in
_optimize_unicode
    mapping = array.array('b', mapping).tostring()



From casevh at comcast.net  Mon Sep 25 15:36:59 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 25 Sep 2006 12:36:59 -0700
Subject: python interpreter on solaris 10
In-Reply-To: <1159209873.808837.86460@d34g2000cwd.googlegroups.com>
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
	<1159205234.213553.164990@e3g2000cwe.googlegroups.com>
	<1159206194.148219.176800@i42g2000cwa.googlegroups.com>
	<1159209873.808837.86460@d34g2000cwd.googlegroups.com>
Message-ID: <1159213019.360006.123350@i3g2000cwc.googlegroups.com>

> > /usr/bin/python
> not found
>
> /usr/lib/python2.4/idlelib/idle.py
> /usr/sfw/python2.3/idlelib/idle.py gives
>
> 'there is no action associated with "idle.py"'
> configure gnome to associate application?
>
> click yes:
> edit file type window pops up.
> program to run menu is empty.
> browse is available. any ideas on what i need to choose?

You'll need to associate all the python programs (*.py files) with the
python interpreter. To my knowledge, all official Solaris releases
provide Python 2.3 as /usr/sfw/bin/python. Solaris Express ( stable
development snapshots, usually released every two weeks or so) provide
Python 2.4 as /usr/bin/python.

I would try to use the python executable located in /usr/bin if it is
exists, otherwise use the python executable in /usr/sfw/bin.

casevh



From tim.golden at viacom-outdoor.co.uk  Thu Sep 21 05:52:45 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 21 Sep 2006 10:52:45 +0100
Subject: Using py2exe to wrap a service?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B48E@vogbs009.gb.vo.local>

[MaR]
| Tim Golden wrote:
| > [MaR]
| >
| > | I do not call pythoncom.CoInitialize ()  as I tend to 
| expect a module
| > | wrapping COM stuff to do that.
| >
| > Hmmm. A slightly philosophical point.
| [snip]
| 
| :o) I agree!
| 
| I have added the CoInit.. call to the __init__() of the threaded class
| (I understood the documentation as that was a proper place.)
| The exception message changed!
| Unfortunately I get little wiser.. (yes I confess.. I am spoonfed with
| unix ;o)
| 
| The instance's SvcRun() method failed
|   File "win32serviceutil.pyc", line 785, in SvcRun
|   File "MailProxySvc.pyc", line 132, in SvcDoRun
|   File "MailProxySvc.pyc", line 100, in setup
|   File "D:\projects\MailProxy\AddressDB.py", line 54, in
| loadPersonsFromAD
|   File "active_directory.pyc", line 367, in search
|   File "active_directory.pyc", line 217, in query
|   File "win32com\client\gencache.pyc", line 540, in EnsureDispatch
|   File "win32com\client\CLSIDToClass.pyc", line 50, in GetClass
| exceptions.KeyError: '{B08400BD-F9D1-4D02-B856-71D5DBA123E9}'

OK. Now we're into the ClassID thing. I'm hoping that someone with
py2exe knowhow will chip in here. That line is trying to generate
a Python module to correspond to the ADODB.Command typelib:

command = EnsureDispatch ("ADODB.Command")

The py2exe wiki suggests that a slight nudge to the code
might fix the problem:

http://www.py2exe.org/index.cgi/IncludingTypelibs

At this point there are several options open to us:

(in no particular order)
1) You could nudge the code at line 217 to make use of
that suggestion.
2) I could do that and send you the result.
3) I could alter the module so it doesn't use gencache
at all. I don't seem to be using any constants so the
Dispatch might as well be dynamic.
4) None of the above.

I'm happy to do (3) and send it to you privately if you're
willing to try. Of course, it might not be the cause
of the problem in any case!

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From tim at tdw.net  Fri Sep 15 18:28:12 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 15 Sep 2006 23:28:12 +0100
Subject: something for itertools
In-Reply-To: <R52454576.664.295.1@mx-extra>
References: <R52454576.664.295.1@mx-extra>
Message-ID: <9afea2ac0609151528na82058fs5d454274b4e785ab@mail.gmail.com>

On 15/09/06, Daniel Nogradi <nogradi at gmail.com> wrote:
> In a recent thread,
> http://mail.python.org/pipermail/python-list/2006-September/361512.html,
> a couple of very useful and enlightening itertools examples were given
> and was wondering if my problem also can be solved in an elegant way
> by itertools.
>
> I have a bunch of tuples with varying lengths and would like to have
> all of them the length of the maximal and pad with None's. So
> something like
>
> a = ( 1, 2, 3 )
> b = ( 10, 20 )
> c = ( 'x', 'y', 'z', 'e', 'f' )
>
> should turn into
>
> a = ( 1, 2, 3, None, None )
> b = ( 10, 20, None, None, None )
> c = ( 'x', 'y', 'z', 'e', 'f' )
>

or maybe a one liner  :)

>>> (a + 5*(None,))[:5]
(1, 2, 3, None, None)

>>> pad_to = 5
>>> (a + pad_to*(None,))[:pad_to]
(1, 2, 3, None, None)
>>> (b + pad_to*(None,))[:pad_to]
(10, 20, None, None, None)
>>> (c + pad_to*(None,))[:pad_to]
('x', 'y', 'z', 'e', 'f')
>>>


-- 

Tim Williams


From http  Thu Sep 28 21:40:33 2006
From: http (Paul Rubin)
Date: 28 Sep 2006 18:40:33 -0700
Subject: sqlite3 error
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<1159394058.945948.119410@h48g2000cwc.googlegroups.com>
	<yCQSg.41$1n3.351@news.tufts.edu>
	<1159493520.289291.276850@b28g2000cwb.googlegroups.com>
Message-ID: <7xodsz5u26.fsf@ruckus.brouhaha.com>

"John Machin" <sjmachin at lexicon.net> writes:
> It gets better:
> 
> Iceland:...
> Portuguese:...
> [parts of] Somalia, Ethiopia:... 
> Vietnamese:...

You might add something about Arabic filionyms.


From ravenheart.j at gmail.com  Mon Sep 25 12:52:08 2006
From: ravenheart.j at gmail.com (ravenheart)
Date: Mon, 25 Sep 2006 17:52:08 +0100
Subject: Emphasizing a gtk.Label
Message-ID: <ef91fd$ngg$1@hefestos.uned.es>

I want to give some emphasis to a Label from gtk, without breaking gnome 
theme (i.e. not changing colors, etc)
I think bolding it would be a good option (could be also underscoring 
but don't like it at all).
What would be the best solution? How to do it? I have found how to 
change colors and underscoring but nothing else.
Thanks.


From gagsl-py at yahoo.com.ar  Fri Sep  1 15:18:51 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 01 Sep 2006 16:18:51 -0300
Subject: Incremental Progress Report object/closure?
In-Reply-To: <1157134065.116944.70270@m79g2000cwm.googlegroups.com>
References: <1157134065.116944.70270@m79g2000cwm.googlegroups.com>
Message-ID: <7.0.1.0.0.20060901161733.03406c98@yahoo.com.ar>

At Friday 1/9/2006 15:07, Terrence Brannon wrote:

>'lo all, I'm looking for something that gives feedback to the screen
>every X iterations, reporting
>
>Time elapsed:  0:00:00   X,XXX,XXX records done. speed XXXX/second.
>[Action Label]

What about a simple:

print "Time elapsed: blah blah blah\r" % whatever,

(notice the \r and the final , )



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From mikeowens at gmail.com  Tue Sep 12 09:42:41 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 08:42:41 -0500
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1158045341.284783.321210@h48g2000cwc.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>
	<mailman.302.1158018336.5279.python-list@python.org>
	<1158045341.284783.321210@h48g2000cwc.googlegroups.com>
Message-ID: <df2316bd0609120642t55d20944n7a88d677421befd3@mail.gmail.com>

On 12 Sep 2006 00:15:41 -0700, sjdevnull at yahoo.com <sjdevnull at yahoo.com> wrote:

> Just to be fair...
>
> You do hear many people claiming exactly that, and the primary
> complaint is often exactly the same one that's being levelled against
> sqlite here (it's incredibly lax with types and does sometimes
> mystifying conversions rather than pointing out programmer errors--and
> yes that's intentionally loaded language that I don't necessarily agree
> with, it's a common argument though.).

True enough.

Yet not a single conversion is undocumented in SQLite, nor is its type
affinity. It works exactly as advertised. And MySQL's chief type
conversion gotchas -- primarily dates/times I think -- were also
clearly addressed in the documentation, and where changed in later
versions of MySQL. Then there is, as I think another person pointed
out on this thread, Oracle's silent conversion of empty strings to
NULLs in VARCHAR fields -- talk about mystifying. What about Oracle's
native date format, which also has no relation to the standard? I have
little experience with Oracle, but from what I can tell, to get it to
display dates in standard (ISO) format, you have to set the
NLS_DATE_FORMAT at the session or database level, which requires
either additional SQL commands, or administrative intervention. More
so-called non-SQL compliant behavior, although hardly a surprise (or
even a problem) to someone who is experienced with Oracle.

The bottom line: to use *any* database effectively, big or small, one
has to read its documentation, not the SQL standard.


From rridge at csclub.uwaterloo.ca  Sat Sep  2 19:42:50 2006
From: rridge at csclub.uwaterloo.ca (Ross Ridge)
Date: 2 Sep 2006 16:42:50 -0700
Subject: XBox 360 free SDK (XNA) and IronPython
References: <1157237444.130785.194100@p79g2000cwp.googlegroups.com>
Message-ID: <1157240570.654955.154560@b28g2000cwb.googlegroups.com>


francois.schnell at gmail.com wrote:
> Just for information I just read this BBC article about the free (as in
> beer) SDK for XBOX 360 called XNA :

It's actually called the XNA Framework, and the beta only supports
Windows.  The XBox 360 won't be supported until it's released.

> and saw here an example of someone using IronPython:

IronPython won't work on the XBox 360.

                                       Ross Ridge



From python.sam at googlemail.com  Wed Sep 20 17:26:10 2006
From: python.sam at googlemail.com (sam)
Date: 20 Sep 2006 14:26:10 -0700
Subject: "list index out of range" error
Message-ID: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>

hey everybody, this is my first time posting here. i'm pretty new to
python and programming in general (as you'll soon work out for
yourselves...)

i'm trying to code a version of a selection sort and the heart of the
code is as follows (no_lines is simply the number of items to be
sorted, read out of an input file):

for j in range(0, no_lines):

    k = 0
    while k < no_lines:
        sorted_check = 0
        if list_initial[k] < list_initial[k+1]:
            temp_str = list_initial[k]
        elif list_initial[k] == list_initial[k+1]:
            temp_str = list_initial[k]
        elif list_initial[k] > list_initial[k+1]:
            temp_str = list_initial[k+1]
            sorted_check = 1
        k += 1

    list_initial.remove(temp_str)
    list_final.append(temp_str)
    no_lines -= 1

    if sorted_check == 0:
        break

problem is, i keep getting a "list index out of range" error. i've had
this problem before in different contexts with lists in loops.

i thought i had it cracked when it occurred to me that i needed to
decrement no_lines to take into account that list_initial was shrinking
as i deleted sorted items, but i still got the same error. it's
probably something trivial, but i can't seem to get round it by using
while loops, and i had the same problem with cmp(), hence the explicit
comparison above, which still doesn't work. can anyone help a beginner
out with this?

many thanks in advance,

sam lynas



From fredrik at pythonware.com  Tue Sep 26 11:17:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 17:17:52 +0200
Subject: QuoteSQL
In-Reply-To: <slrnehigc3.pjn.sybrenUSE@schuimige.stuvel.eu>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8cdq$fui$2@lust.ihug.co.nz>	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>	<ef9nib$snj$1@lust.ihug.co.nz>	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>	<efb1me$a43$1@lust.ihug.co.nz>	<1159279263.25441.28.camel@dot.uniqsys.com>	<mailman.686.1159279958.10491.python-list@python.org>	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>	<mailman.692.1159282576.10491.python-list@python.org>
	<slrnehigc3.pjn.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efbgav$87g$1@sea.gmane.org>

Sybren Stuvel wrote:

> I didn't care anything about all that. I just found the way I wrote it
> somewhat easier to read.

absolutely.

</F>



From bj_666 at gmx.net  Sat Sep  9 05:28:24 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sat, 09 Sep 2006 11:28:24 +0200
Subject: Unable to make python work properly
References: <mailman.187.1157762044.5279.python-list@python.org>
Message-ID: <pan.2006.09.09.09.28.23.522682@gmx.net>

In <mailman.187.1157762044.5279.python-list at python.org>, Benjamin Grant
wrote:

> Hi all,
> I'd greatly appreciate any help.  I can configure, make and install
> everything fine.  I'm using python 2.4  I have ubuntu dapper drake. I am
> trying to install hplip which requires python.  When I do this, this
> also works but while running the following error occurs:
> Traceback (most recent call last):
>   File "/usr/local/bin/hp-setup", line 31, in ?
>     import readline, gzip
> ImportError: No module named readline

`hplip` is available as package in the Ubuntu repositories.  Why do you
install it from sources?

> It appears as though for some reaosn the readline module is not being
> installed on my system.

It's a dependency of the Python packages.  That's odd.

Ciao,
	Marc 'BlackJack' Rintsch


From deets at nospam.web.de  Fri Sep 29 15:08:50 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 29 Sep 2006 21:08:50 +0200
Subject: retry in exception
In-Reply-To: <1159555060.721235.119530@b28g2000cwb.googlegroups.com>
References: <451d4294$1@news.vo.lu>
	<slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
	<1159555060.721235.119530@b28g2000cwb.googlegroups.com>
Message-ID: <4o59a3Fcvda8U1@uni-berlin.de>

MonkeeSage schrieb:
> Sybren Stuvel wrote:
>> Antoine De Groote enlightened us with:
>>> I hope I don't upset anybody by comparing Python to Ruby (again). Is
>>> there something like Ruby's retry keyword in Python?
>> Please don't assume that everybody knows Ruby through and through...
> 
> In ruby, the equivalent to try...except is begin...rescue. In the
> rescue section you can ask it to retry the begin section. So, for
> example:
> 
> b=0
> begin
>   puts 1/b
> rescue
>   b=1
>   retry # <- this little guy
> end
> 

Not sure I like that...

begin
   do_something_with_sideeffects
   do_something_wrong
rescue
   retry
end

could produce quite a bit of unexpected results if used uncautiously.

Diez


From frank at chagford.com  Fri Sep  8 01:45:55 2006
From: frank at chagford.com (Frank Millman)
Date: 7 Sep 2006 22:45:55 -0700
Subject: Question about subclassing and overriding methods
In-Reply-To: <IGYLg.4602$v%4.2878@newsread1.news.pas.earthlink.net>
References: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>
	<44ffd3d1$0$27565$626a54ce@news.free.fr>
	<1157618010.246530.286300@d34g2000cwd.googlegroups.com>
	<IGYLg.4602$v%4.2878@newsread1.news.pas.earthlink.net>
Message-ID: <1157694355.710628.129580@i42g2000cwa.googlegroups.com>


Dennis Lee Bieber wrote:
> On 7 Sep 2006 01:33:30 -0700, "Frank Millman" <frank at chagford.com>
> declaimed the following in comp.lang.python:
>
> > In my particular case, when I do subclass Test, y is always True.
> > Therefore I can rewrite it like this -
> >
> > class Test2(Test):
> >     def __init__(self,x):
> >         Test.__init__(self,x,True)
> >     def getx2(self):
> >         print x*3
> >
> > As you suggested, I redefine getx2 instead of getx, and it works as I
> > want.
> >
> > Slightly less insane, I hope ;-)
> >
>
> 	I do hope this is just a simplified example <G>
>
> 	Otherwise I'd have implemented it the other way around -- don't
> compute the value on each get, but rather on the initialization
>

Thanks for the reply, Dennis. In fact, my real requirement has got
nothing to do with computing a value. That was just a way of
illustrating my need to call a different version of a method depending
on certain factors.

I have since come up with a different approach, which I have explained
in a new thread. It is still a bit complicated, so I would still
appreciate any comments on how to simplify it.

Frank



From steve at holdenweb.com  Mon Sep 25 01:25:53 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 01:25:53 -0400
Subject: Talking to marketing people about Python
In-Reply-To: <roy-D4C452.19080324092006@reader2.panix.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <ef7p7l$sgq$1@sea.gmane.org>

Roy Smith wrote:
> I'm working on a product which for a long time has had a Perl binding for 
> our remote access API.  A while ago, I wrote a Python binding on my own, 
> chatted it up a bit internally, and recently had a (large) customer enquire 
> about getting access to it.
> 
> I asked for permission to distribute the Python binding, and after a few 
> weeks of winding its way through the corporate bureaucracy I got an email 
> from a product manager who wants to meet with me to "understand the market 
> demand for Python API before we commercialize it".
> 
> Can anybody suggest some good material I can give to him which will help 
> explain what Python is and why it's a good thing, in a way that a 
> marketing/product management person will understand?

No, but if you gave him a piece of paper with "please turn over" written 
on both sides you could perhaps keep him otherwise occupied to the 
company's benefit.

Seriously (and I suppose as a PSF director I should be serious from time 
to time), you could point out that it will increase the availability of 
your base product. Point out that there are Python APIs for many 
services (Amazon S3, del.icio.us, digg to name just a few) and that 
these bring the services within the scope of many more people.

Lastly, remind him that the customer is always right, and the large 
customer usually even more right. You already have evidence of demand 
from the customer base: aren't large customers a part of your market? 
Show him the enquiry!

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From john106henry at hotmail.com  Wed Sep 13 13:14:51 2006
From: john106henry at hotmail.com (John Henry)
Date: 13 Sep 2006 10:14:51 -0700
Subject: When is it a pointer (aka reference) - when is it a copy?
Message-ID: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>

Hi list,

Just to make sure I understand this.

Since there is no "pointer" type in Python, I like to know how I do
that.

For instance, if I do:

   ...some_huge_list is a huge list...
   some_huge_list[0]=1
   aref = some_huge_list
   aref[0]=0
   print some_huge_list[0]

we know that the answere will be 0.  In this case, aref is really a
reference.

But what if the right hand side is a simple variable (say an int)?  Can
I "reference" it somehow?  Should I assume that:

   aref = _any_type_other_than_simple_one

be a reference, and not a copy?

Thanks,



From esj at harvee.org  Sat Sep 16 23:36:37 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Sat, 16 Sep 2006 23:36:37 -0400
Subject: Python blogging software
In-Reply-To: <1158183929.155925.6050@m73g2000cwd.googlegroups.com>
References: <1158132558.3622.29.camel@devilbox>	<mailman.7.1158132885.10491.python-list@python.org>	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>	<mailman.50.1158182707.10491.python-list@python.org>
	<1158183929.155925.6050@m73g2000cwd.googlegroups.com>
Message-ID: <450CC2C5.2050808@harvee.org>

Fuzzyman wrote:
> 
> Because it is client side (rather than running on the server), it has
> no built in comments facility. I use Haloscan for comments, but I'm
> always on the look out for a neat comments system to integrate with
> Firedrop.
> 
> I personally prefer the 'client side' approach, as it makes migrating
> content to another server trivially easy.

a wise person you are.  I've often thought that most of the pages 
generated by web frameworks (except for active pages) should be cached 
once rendered.

as to the comment system, I've been very disappointed by most blog 
comment capabilities because they actively hinder the ability for 
commenters to interact with each other.  what I would like to see is a 
short-life (i.e. three day) mailing list where the message history is 
stored as if it were blog comments.

The advantage of this technique is you can follow the comments without 
constantly checking in on the blog And you can actually build a 
community which interacts more easily than they do today.

Yes, you could build a web form techniques but the main advantage of Web 
forms over mailing lists is that they fill your mailbox with messages 
telling you that you have a message instead of delivering the message 
itself.

it would be interesting to see if one could build this capability 
into/out of mailman.  I really hate reinventing the wheel unless the 
wheel is square and I need a round one.  :-)

---eric




From JoReiners at gmail.com  Mon Sep 11 08:26:41 2006
From: JoReiners at gmail.com (JoReiners)
Date: 11 Sep 2006 05:26:41 -0700
Subject: strange DOM behaviour when using minidom
In-Reply-To: <1157975305.446291.37620@h48g2000cwc.googlegroups.com>
References: <1157975305.446291.37620@h48g2000cwc.googlegroups.com>
Message-ID: <1157977601.254997.196380@m73g2000cwd.googlegroups.com>

Sorry, I just found the error. Simple an empty attribute. Python showed
me strange row numbers. I used a multi line initialization of a dict.
The error always appeared on the first line although I was on an other
line.

Interesting behavior.

Jonatan

JoReiners schrieb:

> Hello, I have a really strange problem. I'm unable to figure it out on
> my own.
>
> I parse very simple xml documents, without any check for their form.
> These files look very similar and are encoded in UTF-8.
>
> Now minidom is always able to parse these files with
> minidom.parse("file") .
> Now when fetching I use this expression:
> xmldoc.getElementsByTagName('DocNumb')[0].firstChild.data.encode('latin1')
>
> (I know it's not beautiful but convenient. )
>
> It always work, but sometimes it simply fails to fetch any element.
> Redoing it from hand in the python console with the same file always
> works.
>
> I have no idea what the error is. I compared working and not working
> files with the hex editor. I couldn't find any significant change. It's
> too strange. If anybody has any clue, hint or anything, please let me
> know.
> 
> Regards, Jonatan



From steven.bethard at gmail.com  Tue Sep 19 11:15:58 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 19 Sep 2006 09:15:58 -0600
Subject: why a main() function?
In-Reply-To: <mailman.241.1158613320.10491.python-list@python.org>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<mailman.241.1158613320.10491.python-list@python.org>
Message-ID: <sKudnZ7y8I06lI3YnZ2dnUVZ_vWdnZ2d@comcast.com>

Steve Holden wrote:
> beliavsky at aol.com wrote:
>> I think I read a suggestion somewhere to wrap the code where a Python
>> script starts in a main() function, so one has
>>
>> def main():
>>     print "hi"
>>
>> main()
>>
>> instead of
>>
>> print "hi"
>>
>> What are the advantages of doing this?
>>
> Guido van Rossum himself can tell you:
> 
>   http://www.artima.com/forums/flat.jsp?forum=106&thread=4829

Interesting.  A lot of the suggestions he makes are unnecessary if you 
use argparse_ or optparse, since they do much cleaner argument parsing 
and error reporting.

I basically never write a main() function in the sense described here. 
My code usually looks something like:

     if __name__ == '__main__':
         parser = _argparse.ArgumentParser(...)
         parser.add_argument(...)
         ...
         arguments = parser.parse_args()

         function_that_actually_does_stuff(arguments.foo,
                                           arguments.bar,
                                           arguments.baz)

So my ``if __name__ == '__main__'`` block does just enough argument 
parsing to be able to call a real function.

.. _argparse: http://argparse.python-hosting.com/

STeVe


From rshepard at appl-ecosys.com  Fri Sep 15 17:33:31 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Fri, 15 Sep 2006 14:33:31 -0700 (PDT)
Subject: Coding Nested Loops
In-Reply-To: <eeeluk$fqv$02$1@news.t-online.com>
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
Message-ID: <Pine.LNX.4.64.0609151432070.24702@salmo.appl-ecosys.com>

On Fri, 15 Sep 2006, Peter Otten wrote:

> It's not clear to me why you would use dictionaries, especially as they
> are unordered; I used lists instead:

   ...

> Now that is a nice occasion to get acquainted with the itertools module...

Peter,

   I have to study the docs to understand what's going on. But, I can see
that this would work.

Thank you,

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From tiarno at sas.com  Thu Sep 14 16:58:33 2006
From: tiarno at sas.com (Tim Arnold)
Date: Thu, 14 Sep 2006 16:58:33 -0400
Subject: latex openoffice converter
References: <mailman.101.1158258623.10491.python-list@python.org>
Message-ID: <eecfpq$e03$1@foggy.unx.sas.com>

"Fabian Braennstroem" <f.braennstroem at gmx.de> wrote in message 
news:mailman.101.1158258623.10491.python-list at python.org...
> Hi,
>
> I would like to use python to convert 'simple' latex
> documents into openoffice format. Maybe, anybody has done
> something similar before and can give me a starting point!?
> Would be nice to hear some hints!
>
> Greetings!
> Fabian

You can use pLasTeX to render to XML. May not be that difficult to render to 
the OO xml spec.
http://plastex.sourceforge.net/plastex/index.html

--T 




From sanxiyn at gmail.com  Tue Sep  5 22:50:27 2006
From: sanxiyn at gmail.com (sanxiyn at gmail.com)
Date: 5 Sep 2006 19:50:27 -0700
Subject: IronPython on Mono howto
Message-ID: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>

Skip wrote:
For those of us who have never used IronPython or Mono, is there a
quick start document laying about somewhere?  It wasn't clear to me
where to even look.

Okay, here we go:

1. Download IronPython

Go to http://www.codeplex.com/IronPython. Click Releases tab. Click
IronPython-1.0-Bin.zip or IronPython-1.0-Src.zip. You need to agree to
the license. Read it if you haven't.

2. Download Mono

Go to http://www.mono-project.com/. Click "download now" icon
(topright). DO NOT DOWNLOAD 1.1.13, IT WON'T WORK. Download according
to your platform and install in the usual way. If you are using Debian
Unstable like me, apt-get install mono is enough. For Linux users not
covered, but using x86 architecture, I highly recommend "Linux
Installer for x86 (All distributions)" download. It's a graphical
installer, can be installed under your home directory not to distrub
package managers, and uninstalls cleanly.

3. Run (Binary case)

Unzip IronPython-1.0-Bin.zip. It unzips to IronPython-1.0 directory.
Change to it. Run "mono ipy.exe". Make sure mono --version shows the
version you installed; you may have non-working (for IronPython) 1.1.13
already installed on your system. You will see:

IronPython 1.0.60816 on .NET 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.
>>>

4. Compile and Run (Source case)

Unzip IronPython-1.0-Src.zip. It unzips to IronPython-1.0 directory.
Change to it. Change to Src directory under it. Edit makefile.

1) Change "CSC=csc" to "CSC=gmcs".
2) Change "mkdir ..." to "mkdir -p".

Make. "Compilation succeeded". Change to the parent directory and you
will see newly compiled ipy.exe and DLLs. Run as in 3.

Seo Sanghyeon



From steve at holdenweb.com  Fri Sep  8 04:38:45 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 09:38:45 +0100
Subject: the first arg to super() must be a type, not a class obj?
In-Reply-To: <7008329d0609080101j1f7dbc43gaa46ecf8daa74b7e@mail.gmail.com>
References: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>	<edr7e2$g0u$1@news.albasani.net>
	<7008329d0609080101j1f7dbc43gaa46ecf8daa74b7e@mail.gmail.com>
Message-ID: <edra5f$6hk$1@sea.gmane.org>

Andre Meyer wrote:
> Another thing: how does super() work wrt. multiple inheritance? It seems 
> like it returns only the first superclass.
> 
The whole point of super is that it returns the first superclass in the 
MRO that *follows* the class of the (first) argument. It's this 
behaviour that makes super() useful in multiple inheritance situations 
(if you believe that super() is in fact useful - there are those who 
have their doubts).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From irmen.NOSPAM at xs4all.nl  Wed Sep 13 13:28:28 2006
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Wed, 13 Sep 2006 19:28:28 +0200
Subject: Python blogging software
In-Reply-To: <mailman.6.1158132563.10491.python-list@python.org>
References: <mailman.6.1158132563.10491.python-list@python.org>
Message-ID: <45083fc0$0$4517$e4fe514c@news.xs4all.nl>

Cliff Wells wrote:
> I'm currently using Frog, and it's decent, but lacks some fundamental
> features (tags for one).  Since Irmen is probably going to scrap it
> anyway, I'm kind of fishing about for something new.

That is not really true. I won't "scrap" Frog. One of the reasons
would be that I'm using it myself ;-)
Perhaps you confused it with the possible scrapping of the Snakelets
appserver it runs on? I'm thinking about rebuilding Frog on one
of the more established servers such as Turbogears.
But haven't had the time to start this.

--Irmen



From filippo2991 at virgilio.it  Fri Sep  1 17:52:34 2006
From: filippo2991 at virgilio.it (filippo)
Date: 1 Sep 2006 14:52:34 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <4lram9F3bg7qU1@uni-berlin.de>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
	<4lram9F3bg7qU1@uni-berlin.de>
Message-ID: <1157147554.640207.50320@i42g2000cwa.googlegroups.com>

Diez B. Roggisch ha scritto:
> I've been doing an online hotel reservation system, btw, and I assure
> you: OO was very helpful, even in its crappy PHP incarnation.

thanks Diez,
I'll keep trying OO paradigm. Probably the advantages will be clearer
to me porting to python my app.

Best regards,

Filippo



From skip at pobox.com  Wed Sep  6 16:12:16 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 6 Sep 2006 15:12:16 -0500
Subject: Data sticking around too long
In-Reply-To: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
Message-ID: <17663.11168.492089.997358@montanaro.dyndns.org>


    Cedric> Why is the ScannerCommand object being created with a scanList
    Cedric> that contains the data that was in the previously created
    Cedric> ScannerCommand object?

Your scanList attribute is defined at the class level and is thus shared by
all ScannerCommand instances.

Skip


From harbingerofpeace at post.com  Sat Sep 23 22:26:05 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 19:26:05 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159063894.894541.3180@b28g2000cwb.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
Message-ID: <1159064765.214210.300630@k70g2000cwa.googlegroups.com>

John Machin wrote:
> Pete wrote:
> > Fade in to episode II...
> >
> > > ...
> > > This is compiling a *constant* regular expression, and works OK on the
> > > Windows distribution of Python 2.4.3 :
> >
> > Hmmmm. Here's the version information stuff:
> >
> > Python 2.4.2 (#1, Feb 12 2006, 03:59:46)
> > [GCC 4.1.0 20060210 (Red Hat 4.1.0-0.24)] on linux2
> >
> > I'm going to upgrade Python and see if that has any effect...
> > I'm running this on a Fedora Core 5 box...
> >
> > > ...
> > > You appear to be running 2.4.n; what is n, and exactly which *x
> > > platform are you running it on? Perhaps a file in /usr/lib/python2.4 is
> > > corrupt, but we won't know until you give the *full* traceback. Do you
> > > get the same results when you try what I did at the interpreter
> > > interactive prompt?
> >
> > The error I received was from the interactive prompt thing.
>
> So I noticed from your first posting. Now do what you were asked: try
> what I did.
>
> > Is there
> > some way I can get more verbose information or something that would be
> > more helpful?
> >
>
> Yes, just include the whole traceback!!! Example of what I mean is
> below:

Here's my full interactive I/O:

Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
[GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import httplib
>>> conn = httplib.HTTPConnection("www.python.org")
>>> conn.request("GET", "/index.html")
Hello World.
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.4/httplib.py", line 804, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python2.4/httplib.py", line 821, in _send_request
    self.putrequest(method, url, **skips)
  File "/usr/lib/python2.4/httplib.py", line 752, in putrequest
    self.putheader('Host', self.host.encode("idna"))
  File "/usr/lib/python2.4/encodings/__init__.py", line 96, in
search_function
    globals(), locals(), _import_tail)
  File "/usr/lib/python2.4/encodings/idna.py", line 6, in ?
    dots = re.compile(u"[\u002E\u3002\uFF0E\uFF61]")
  File "/usr/lib/python2.4/sre.py", line 180, in compile
    return _compile(pattern, flags)
  File "/usr/lib/python2.4/sre.py", line 225, in _compile
    p = sre_compile.compile(pattern, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 500, in compile
    code = _code(p, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 481, in _code
    _compile_info(code, p, flags)
  File "/usr/lib/python2.4/sre_compile.py", line 459, in _compile_info
    _compile_charset(charset, flags, code)
  File "/usr/lib/python2.4/sre_compile.py", line 178, in
_compile_charset
    for op, av in _optimize_charset(charset, fixup):
  File "/usr/lib/python2.4/sre_compile.py", line 221, in
_optimize_charset
    return _optimize_unicode(charset, fixup)
  File "/usr/lib/python2.4/sre_compile.py", line 341, in
_optimize_unicode
    mapping = array.array('b', mapping).tostring()
TypeError: typecode argument must be a valid type.
>>>

>
> | C:\junk>copy con wally.py
> | guff = 1 / 0
> | ^Z
> |         1 file(s) copied.
> |
> | C:\junk>python
> | Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
> on win32
> | Type "help", "copyright", "credits" or "license" for more
> information.
> | >>> import wally
> | Traceback (most recent call last):
> |   File "<stdin>", line 1, in ?
>
> Your posting appeared truncated when viewed with both Google groups and
> in a regular newsreader.

I clipped out stuff that didn't seem relevant. I didn't clip anything
out this time.

> There is no guarantee that the last line shown is the one that caused
> the error.
> Just as if this example were missing the following lines, we don't know
> which
> source line caused the error, nor even what the error was!!
>
> |   File "wally.py", line 1, in ?
> |     guff = 1 / 0
> | ZeroDivisionError: integer division or modulo by zero
>
> HTH,
> John

I'm still lost... Were you able to successfully run the GET example at
http://www.python.org/doc/current/lib/httplib-examples.html ?

Thanks for your help!
Pete



From sybrenUSE at YOURthirdtower.com.imagination  Sun Sep  3 14:37:47 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sun, 3 Sep 2006 20:37:47 +0200
Subject: FYI: getting data from an OpenOffice.org spreadsheet
References: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
	<9qCdnchfm_sQa2fZnZ2dnUVZ_t2dnZ2d@comcast.com>
	<slrnefm701.c8f.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <slrnefm87r.cf4.sybrenUSE@schuimige.stuvel.eu>

Hi folks,

I just noticed I still had the "no archive" header on, which is rather
stupid. If I want to make life easier for people, the information I
posted in this thread should be archived! Here is a small summary:

Get data from an OpenOffice.org spreadsheet with a Python script. It
works on the currently opened spreadsheet, so you can just as well
open an Excel sheet in OpenOffice.org and get the data from that.
http://www.stuvel.eu/archive/28/getting-data-from-an-openofficeorg-spreadsheet

Saving the currently opened OpenOffice.org spreadsheet to an Excel
sheet with just a few lines of Python code. There are still people
that favour MS Office and request Excel output from software. This is
easily done with OpenOffice.org and Python:
http://www.stuvel.eu/archive/29/ooo-spreadsheet-to-excel-with-python

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From duncan.booth at invalid.invalid  Wed Sep 27 08:01:29 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 12:01:29 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
	<Xns984B793317A15duncanbooth@127.0.0.1>
	<efdnqd$adv$1@lust.ihug.co.nz>
Message-ID: <Xns984B8482155F6duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> I'm assuming you mean, how would you get from a Python expression to a
> MySQL clause that looks like
> 
>     name like "%\\\\%%"
> 
> (wildcard % followed by literal backslash \\ followed by literal
> percent \% followed by wildcard %.) That's easy:
> 
>     EscapeSQLWild(r"\%") => r"\\%"
>     SQLString(r"\\%") => r'"\\\\%"'
> 
> So the Python expression
> 
>     "name like %s" % SQLString("%" + EscapeSQLWild(r"\%") + "%")
> 
> gives you what you want.
> 
Deary me. Did you actually test out that bit of code before you posted it? 
No, I thought not. I even gave you a test harness to make it easy for you 
to check the quality of your code before posting.

All you had to do was to add another test:

    def test_escapebackslashwild2(self):
        self.cursor.execute(
            ("select name from pythontest where name like %s" %
            SQLString("%" + EscapeSQLWild(r"\%") + "%")))
        expected = (('x\\%x',),)
        self.assertEqual(expected, self.cursor.fetchall())

and the output is:
======================================================================
FAIL: test_escapebackslashwild2 (__main__.Tests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "mysqltest.py", line 111, in test_escapebackslashwild2
    self.assertEqual(expected, self.cursor.fetchall())
AssertionError: (('x\\%x',),) != (('x\\nx',), ('x\\%x',))

----------------------------------------------------------------------

as I said before, your escaping is too late and not enough. You've got a 
search for a literal backslash in there sure enough, but you haven't 
managed to escape the percent character.

Try again.


From tim.peters at gmail.com  Fri Sep 15 15:25:15 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Fri, 15 Sep 2006 15:25:15 -0400
Subject: how do you convert and array of doubles into floats?
In-Reply-To: <4n090tF88jknU1@uni-berlin.de>
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
	<pan.2006.09.15.18.10.18.698711@gmx.net>
	<4n090tF88jknU1@uni-berlin.de>
Message-ID: <1f7befae0609151225w12243ecbo9f98e1973d466f23@mail.gmail.com>

[Marc 'BlackJack' Rintsch]
>> What about:
>>
>> b = array.array('f', a)

[Diez B. Roggisch]
> AFAIK d and f are synonym for arrays, as python doesn't distinguish
> between these two on a type-level. And double it is in the end.

While Python has no type of its own corresponding to the native C
`float`, the `array` and `struct` modules do understand the native C
`float` .  A Python float (same as a C `double`) gets converted to a C
`float` when stored into one of those, and a C `float` is converted to
a Python float (C `double`) when a value is extracted.

>>> from array import array
>>> x = 1.0000000001
>>> x
1.0000000001
>>> array('d', [x])[0]   # full precision is preserved
1.0000000001
>>> array('d', [x])[0] == x
True
>>> array('f', [x])[0]   # trailing bits are lost
1.0
>>> array('f', [x])[0] == x
False


From acquiesce11 at yahoo.com.au  Sun Sep 17 10:00:22 2006
From: acquiesce11 at yahoo.com.au (Fransiska M Argasetya)
Date: Mon, 18 Sep 2006 00:00:22 +1000 (EST)
Subject: multiping + while loop + excel
Message-ID: <20060917140022.49614.qmail@web54705.mail.yahoo.com>

dear everyone
   
  please help me with my coding dilemma o_O
   
  i have a python code that can ping several sites as shown below:
   
  =====================================================
  =====================================================
   
  import threading
import os
import Queue
import time
from time import sleep
   
  def showResponse(args):
    """Pretty prints passed tuple to stdout"""
      ip, stdoutLi, threadName = args
    print '%s \t\t\t\t\t\n' % (ip)
      for line in stdoutLi:
        line = line.strip()
        if not line: continue
        print '\t' + line
    print '-'*72
  class Pinger(threading.Thread):
      def __init__(self, host, queue):
        threading.Thread.__init__(self)
        self.__host = host
        self.__queue = queue
        self.setDaemon(1)
      def run(self):
        pingCmd = "ping -n 1 -w 1000 " + self.__host
        childStdout = os.popen(pingCmd)
        result = (self.__host, childStdout.readlines(), self.getName())
        childStdout.close()
        self.__queue.put(result)
  
if __name__ == '__main__':
   
    hostLi = ['yahoo.co.uk','google.com','wikipedia.org'] # read from the list
      q = Queue.Queue()
      startA = time.time()
    for host in hostLi:
        """Create and start all necessary threads, passing results
        back via thread safe Queue instance.
        """
      
        Pinger(host,q).start()
      i = len(hostLi) # counts the length of hostLi
        
    while i > 0:
        showResponse(q.get())
        i -= 1

  =====================================================
  =====================================================
   
  i would like to develop it more with the following requirements:
   
  1). i want to make the code to read the list of websites from another file (be it a .txt or .xls)
  2). i want the results of the pings to be displayed in another file, where i can manipulate those figures later on for research purposes
  3). if number (2) is achieved, i want the code to run every 60 minutes so i can make a statistic with those values, i.e. pinging to site A has less delay during the day compare to during night time or something like that
   
  i have several ideas of my own but they dont seem to work:
  1). hostLi = open("ipaddress.txt")  # ipaddress.txt is the list of websites
     for line in hostLi.readlines():
          print line
     hostLi.close()
   
       OR
   
       f = open("ipaddress.txt")
     while 1:
          line = f.readline()
          if not line: break
               hostLi(line)
     f.close()
  2). myoutfile = showResponse(q.get()) # write this result to the file
     theoutfile = open ("myout.txt","w") # open the file to write (w)
     for item in myoutfile:  # write out the contents
          theoutfile.write (item)
       theoutfile.close()
  3). while i > 0:
        showResponse(q.get())
        i -= 1
    while 1:
        time.sleep(3600)  # 60 minutes = 3600 seconds
   
  thank you very much for anyone who can help me out with these issues
   
  really appreciate it a lot!

 		
---------------------------------
Do you Yahoo!? 
  Take part in Total Girl?s Ultimate Slumber Party and help break a world record 
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From torerik81 at gmail.com  Thu Sep 14 06:29:28 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Thu, 14 Sep 2006 12:29:28 +0200
Subject: Why not event-driven packages in other than the main thread?
In-Reply-To: <4msmn3F7ni7iU1@individual.net>
References: <eeb6go$kfk$1@news.uit.no> <4msmn3F7ni7iU1@individual.net>
Message-ID: <eebaua$m0d$1@news.uit.no>

Bjoern Schliessmann wrote:
> Tor Erik wrote:
> 
>> But could anyone tell me why running these in a thread other than
>> the main one doesn't work?
> 
> Just for personal interest: Why would you want to run the GUI in
> another thread? It's common to leave the GUI in the main thread and
> let worker threads handle heavy time-consuming stuff.
> 
> Regards,
> 
> 
> Bj?rn
> 

If you have two event-based frameworks, both needing to run in the main 
thread, such as Tkinter and Twisted, you have a problem


From sjmachin at lexicon.net  Fri Sep 29 10:09:31 2006
From: sjmachin at lexicon.net (John Machin)
Date: 29 Sep 2006 07:09:31 -0700
Subject: There's another Timbot on the loose!
In-Reply-To: <87odsybxxj.fsf@gmail.com>
References: <7xbqoyby2u.fsf_-_@ruckus.brouhaha.com><87odsybxxj.fsf@gmail.com>
Message-ID: <1159538971.435994.107120@h48g2000cwc.googlegroups.com>


Jorge Godoy wrote:
> Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
>
> > http://web.cecs.pdx.edu/~mpj/timbot/index.html
>
> Should we tell them that we have the original and have a patent on him? :-)
>
> --

Page last updated in 2002 ... site looks like the Marie Celeste.
Perhaps our timbot undertook a preemptive strike on the would-be
usurper :-)



From steve at holdenweb.com  Mon Sep 11 17:29:20 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 22:29:20 +0100
Subject: BaseHTTPServer weirdness
In-Reply-To: <rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
Message-ID: <ee4ke8$rgo$1@sea.gmane.org>

Ron Garret wrote:
> In article <mailman.287.1158003082.5279.python-list at python.org>,
>  Steve Holden <steve at holdenweb.com> wrote:
> 
> 
>>The normal way is
>>
>>s = cgi.parse()
>>
>>since the CGI script sees the client network socket (after consumption 
>>of HTTP headers) as its standard input.
> 
> 
> Doesn't work.  (I even tried sys.stdin=r.rfile; s=cgi.parse())  Don't 
> forget, this is not a CGI script, it's a handler for a BaseHTTPServer.
> 
> 
Right. My bad. However there's clearly something screwy going on, 
because otherwise you'd expect to see at least an empty dictionary in 
the output.


> 
>>>2.  Despite the fact that I'm passing a 1 for the keep_blank_values 
>>>argument to cgi.parse_qs, it doesn't actually keep blank values.  Is 
>>>this a bug, or am I doing something wrong?
>>>
>>
>>Sounds like a bug, but then since your parsing looks buggy I'm surprised 
>>you get anything at all. Try using a keyword argument 
>>keep_blank_values=1 just in case the order has changed or something 
>>daft. But fix your parsing first.
>>
Reading the source of the 2.4.3 library shows that someone added an 
environ=os.environ argument, which will be the second argument on a 
positional call, so that clears that mystery up. The doicumentation 
should really show these as keyword arguments rather than implying they 
are positionals. It'd be nice if you could report this as a 
documentation bug - though I believe by now the 2.5rc2 release will be 
frozen.

>>The other thing to note is that since you are putting a dictionary's 
>>string representation out straight into your HTML if there are odd 
>>characters in it this may give you strange output in the browser, so you 
>>should view the page source to ensure that's not the case. Which it 
>>probably isn't ...
> 
> 
> I know that's not a problem because it does work when I use parse_qs.  
> (I know about escaping HTML and all that, but this is just a little test 
> program.)
> 
I suspect that the remainder of your problems (cgi_parse appears to be 
returning a *string*, dammit) are due to the fact that the process you 
are running the HTTP server in doesn't have the environment variables 
set that a server would set if it really were being called in a CGI 
context, and which the CGI library expects to be set. You could try 
passing them as an explicit environ argument and see if that worked.

But basically, you aren't providing a CGI environment, and that's why 
cgi.parse() isn't working.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From apardon at forel.vub.ac.be  Fri Sep 29 15:04:07 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 29 Sep 2006 19:04:07 GMT
Subject: Can recursive descent parser handle Python grammar?
References: <1159484100.469926.25210@h48g2000cwc.googlegroups.com>
Message-ID: <slrnehqrh7.j76.apardon@rcpc42.vub.ac.be>

On 2006-09-28, seberino at spawar.navy.mil <seberino at spawar.navy.mil> wrote:
> I'm a compiler newbie and was curious if Python's language/grammar
> can be handled by a recursive descent parser.

IIUC the python grammer is LL(1) and the development team is commited
to keeping it LL(1).

LL(1) languages can be handled by a recursive descent parser.

-- 
Antoon Pardon


From timothy at open-networks.net  Wed Sep 13 22:53:15 2006
From: timothy at open-networks.net (Timothy Smith)
Date: Thu, 14 Sep 2006 12:53:15 +1000
Subject: FtpUtils Progress Bar
In-Reply-To: <1158200735.698563.93380@i42g2000cwa.googlegroups.com>
References: <1158200735.698563.93380@i42g2000cwa.googlegroups.com>
Message-ID: <4508C41B.3050401@open-networks.net>

iwcook58 at gmail.com wrote:
> Hi,
> I can successfully upload and download files using Stefan's Schwarzer's
> ftputil script.
>
> The problem is that as some of the files are quite large you cannot see
> how much has been downloaded/uploaded.
> Even a percentage or just dots going across the screen would be better
> than nothing.
>
> Does anyone have an example on how to show the progress of the
> upload/download when using ftputil?
>
> Thanks in advance.
>
> Kind regards
> Ian Cook
>
>   
try this

def _reporthook(numblocks, blocksize, filesize, url=None):
                        base = os.path.basename(url)
                        try:
                            percent = 
min((numblocks*blocksize*100)/filesize, 100)
                        except:
                            percent = 100
                        if numblocks != 0:
                           print str(percent)+'%')


From fredrik at pythonware.com  Mon Sep 25 09:47:19 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 15:47:19 +0200
Subject: AttributeError Question
References: <20060924130057.1762.qmail@web90315.mail.mud.yahoo.com>
Message-ID: <ef8ml7$sko$1@sea.gmane.org>

"Javier Subervi" <javier_subervi at yahoo.com> wrote:

> This came up when trying to load a Zope product:
>
>    * Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__
>      __traceback_info__: field.Vocabulary(here)
>    * Module Python expression "field.Vocabulary(here)", line 1, in <expression>
>    * Module Products.Archetypes.Field, line 432, in Vocabulary
>    * Module Products.Archetypes.utils, line 145, in mapply
>    * Module Products.EasyDocument.content.EasyDocument, line 112, in _list_templates
>    * Module OFS.Traversable, line 161, in unrestrictedTraverse
>      __traceback_info__: ([], 'EasyDocumentTemplates')
>    * Module Products.Archetypes.BaseObject, line 1072, in __bobo_traverse__
>
> AttributeError: EasyDocumentTemplates
>
> Can you tell me what I should do with Attribute Errors in general? The docs say an
> AttributeError is "Raised when an attribute reference or assignment fails." Okay, fine...
> where do I go from here?

in general, you get an AttributeError if you try to execute e.g. obj.foo where "obj" is an
object but the "foo" attribute doesn't exist.  in your case, the AttributeError seems to be
occurring deep down inside Zope, which makes it a bit hard to figure out exactly what
you been doing wrong (if anything).  It could be a bug in your code, or a bug in Zope,
or a bug in some module you're using.

it's probably best to post this to a Zope-specific mailing list.

</F> 





From felipe.lessa at gmail.com  Thu Sep  7 20:58:31 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Thu, 7 Sep 2006 21:58:31 -0300
Subject: IronPython 1.0 released today!
In-Reply-To: <1157672096.205892.257980@i3g2000cwc.googlegroups.com>
References: <mailman.38.1157488049.5279.python-list@python.org>
	<ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
	<4m835vF4narnU1@uni-berlin.de>
	<9FRLg.24762$rP1.15051@news-server.bigpond.net.au>
	<1157672096.205892.257980@i3g2000cwc.googlegroups.com>
Message-ID: <c2701f5c0609071758s19cb4712h779e760b621dfa80@mail.gmail.com>

7 Sep 2006 16:34:56 -0700, Luis M. Gonz?lez <luismgz at gmail.com>:
> People are already porting some of these libraries.
> Those that are written in pure python don't need to be ported, but
> those that rely on c extensions can be rewritten in c# or any other
> .NET language.

Or in C that is P/Invoked from the CLR, although this option is
somewhat less portable. See
http://www.mono-project.com/Interop_with_Native_Libraries

-- 
Felipe.

From aleax at mac.com  Mon Sep  4 15:35:00 2006
From: aleax at mac.com (Alex Martelli)
Date: Mon, 4 Sep 2006 12:35:00 -0700
Subject: Broadcast server
References: <1157015655.323891.154720@p79g2000cwp.googlegroups.com>
	<44f77d3c$0$75041$14726298@news.sunsite.dk>
	<1157102040.703559.322090@p79g2000cwp.googlegroups.com>
	<1hl391s.x8y3epjnp978N%aleax@mac.com>
	<1157366614.779456.23620@p79g2000cwp.googlegroups.com>
Message-ID: <1hl4s66.1jdi3kd1diobqsN%aleax@mac.com>

<swell at netcourrier.com> wrote:

> Thx Alex,
>   This is exactly what i want to look at . Async will definitely be
> something i will look at . Does it make sense to mix async and threaded
> server ( let say a threaded server accepting max 10 connections and
> dealing with client request asynchronously ). Does it sounds you a good
> design.

I would spawn a worker thread only for specific jobs that cannot be done
asynchronously, and would dispatch work requests to it from the main
thread, and get results back, via instances of Queue.Queue.  One example
might be interfacing with a database which does not directly support any
asynchronous operation: all work on that DB should be done by one
dedicated thread that does nothing else.  I have a whole chapter of the
Nutshell dedicated to multiprocessing (processes and threads), and in
that chapter I devote ample space (relative to the Nutshell's always
tight space constraints;-) to recommending the architectures based on
Queue instances that experience teaches me work best.

 
> Of course i will have a look a twisted that sounds me doing all the job
> ( for sure better that i can do ) .

It's a well-crafted and rich framework -- in particular, it already
wraps on your behalf some cases of the need for an auxiliary thread, as
sketched above.  On the other hand, learning in depth the "bare metal"
on which Twisted's elegant architecture rests is a highly recommended
endeavor: remember Spolsky's "Law of Leaky Abstractions"... ``all
abstractions leak'', and thus, to use abstractions for the best, you'd
better have a solid understanding of the underlying layers (I strongly
believe that having designed microchips makes me a better assembly
language programmer, having programmed in assembly language makes me a
better C programmer, having programmed in C makes me a better Python
programmer...!-).


Alex


From duncan.booth at invalid.invalid  Wed Sep 27 05:47:25 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 09:47:25 GMT
Subject: A critique of cgi.escape
References: <Xns984ABA8B57753castleamber@130.133.1.4>
	<mailman.782.1159345744.10491.python-list@python.org>
Message-ID: <Xns984B6CF6A1ACDduncanbooth@127.0.0.1>

Brian Quinlan <brian at sweetapp.com> wrote:

> Actually, I wasn't kidding. I was basing this belief on greping through 
> the Python standard library where only the quote=None form is ever used. 
> It also matches my experience. But I don't have a large enough sample to 
> make any claim either way.
> 

A better sample might be to grep the Zope sources. There are a lot of calls 
to escape and the vast majority don't set the quote parameter, but most use 
of escape is actually hidden by the templating system. The TAL engine uses 
escape(s,1) for attribute values and escape(text) for content, so you get 
the best of both worlds: you don't have to think about which form of escape 
you need (or even that you need to escape strings at all), and you don't 
get quotes escaped when they don't have to be.


From altemurbugra at gmail.com  Mon Sep 25 20:14:46 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 25 Sep 2006 17:14:46 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159228701.795132.223800@d34g2000cwd.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<1159222443.540807.232040@k70g2000cwa.googlegroups.com>
	<1159225120.550605.220930@d34g2000cwd.googlegroups.com>
	<1159228701.795132.223800@d34g2000cwd.googlegroups.com>
Message-ID: <1159229686.723188.318340@d34g2000cwd.googlegroups.com>

For example i give you an example about making search on one of the
site and get the result.

# #!/usr/bin/python
# # -*- coding: windows-1254; -*-
#
# import urllib
# dictionary = {}    # wow, it's actually a dictionary
# words = ['apple', 'banana', 'cheese']
# for word in words:
#     dictionary[word] =
urllib.urlopen("http://www.example.com/look.php?w=" + word).read()
#
# print dictionary

i dont know how i can get the words from a txt file for searching by
turn



From bearophileHUGS at lycos.com  Fri Sep  1 10:26:50 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 1 Sep 2006 07:26:50 -0700
Subject: dictionaries - returning a key from a value
In-Reply-To: <mailman.10254.1157119445.27775.python-list@python.org>
References: <002101c6cdba$f37c2b50$a8e7ca2b@guerrillagames.com>
	<1157118844.645458.159630@p79g2000cwp.googlegroups.com>
	<mailman.10254.1157119445.27775.python-list@python.org>
Message-ID: <1157120810.714293.171330@h48g2000cwc.googlegroups.com>

Fredrik Lundh:
> better in what sense?

With better I may mean faster, or needing less memory, or requiring a
shorter code, or other things. It depends on many things, related to
the program I am creating.

Thank you for the timings, you are right, as most times. Sometimes I am
wrong, but I try to suggest correct things and I usually try to be
helpful, as you do too, and I am learning still.
I have done timings for other things, but not for this one :-)
I have assumed that the version using iteritems (I think that in Py3.0
items will become iteritems) is the faster in that situation (but your
test shows that I was wrong).

This seems to require one hash access, plus the iteration:
... for key in sampledict if sampledict[key] ...

This seems to require just the iteration plus the key,year tuple
creation:
... for key,year in sampledict.iteritems() if year ...

I have assumed that the hash access + an interation is slower, but
maybe the tuple object creation is slow(er) too. As usual to know
what's better in a given Python version you have to test it.

Bye,
bear hugs,
bearophile



From tgrav at mac.com  Fri Sep  1 20:55:30 2006
From: tgrav at mac.com (Tommy Grav)
Date: Fri, 1 Sep 2006 20:55:30 -0400
Subject: C code in Python
Message-ID: <017A19E9-8F61-4319-A651-0F1DDA68BF65@mac.com>

I have some numerical code in C that I would like to call from  
Python. Can
anyone point me in a direction for some text I could read on how to  
do this?

Cheers
Tommy
tgrav at mac.com
http://homepage.mac.com/tgrav/

"Any intelligent fool can make things bigger,
more complex, and more violent. It takes a
touch of genious -- and a lot of courage --
to move in the opposite direction"
                          -- Albert Einstein


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From martin at v.loewis.de  Sat Sep  9 12:43:53 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 09 Sep 2006 18:43:53 +0200
Subject: os.name under Win32
In-Reply-To: <mailman.10258.1157125352.27775.python-list@python.org>
References: <mailman.10258.1157125352.27775.python-list@python.org>
Message-ID: <4502EF49.5050006@v.loewis.de>

Igor Kravtchenko schrieb:
> My question is whether that is supposed to be totally impossible.
> Under Win32, we are indeed supposed to have os.name = "nt".  Is that value
> hardcoded in Win32 binaries distribution themself?  Can it potentially
> change?

I can't test it right now, but I would expect that Cygwin Python
binaries on Win32 have os.name == "posix".

Regards,
Martin


From theaney at gmail.com  Sun Sep 17 11:59:01 2006
From: theaney at gmail.com (Tim Heaney)
Date: Sun, 17 Sep 2006 11:59:01 -0400
Subject: mp3 file length in time
References: <1158505736.188862.223640@h48g2000cwc.googlegroups.com>
	<7xsliqjza7.fsf@ruckus.brouhaha.com>
	<1158506489.739543.27720@m7g2000cwm.googlegroups.com>
Message-ID: <m3ejuazdq2.fsf@calvin.watterson>

"Jay" <jaysherby at gmail.com> writes:
> Paul Rubin wrote:
>> "Jay" <jaysherby at gmail.com> writes:
>> > In python, I know there are a couple of modules for getting id3 info,
>> > but what about the length of an mp3 file in time?  Is there a way to
>> > aquire that info?  Most of my MP3s don't have id3 tags.  I don't care
>> > for them.  But I need to use python to get their file lengths.  How?
>>
>> You have to count the frames.  Lots of mp3 files use variable bit
>> rates, so you can't go by the file length.
>
> Any tips on how to do that?

Just as there are modules to help you read ID3 tags, there are modules
to help you read the data. For example, MAD

  http://www.underbit.com/products/mad/

can be used from Python

  http://spacepants.org/src/pymad/

so that you could get the length of a track in milliseconds with
something like

  import mad
  print mad.MadFile("a_track.mp3").total_time()

There are other modules for other libraries as well.

I hope this helps,

Tim


From thorsten at thorstenkampe.de  Mon Sep 11 21:04:34 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 12 Sep 2006 02:04:34 +0100
Subject: Running python from a usb drive
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>	<ee4fm8$2elh$1@ulysses.news.tiscali.de>	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
Message-ID: <tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>

* Steve Holden (2006-09-12 01:30 +0100)
> Thorsten Kampe wrote:
>> * Steve Holden (2006-09-11 21:37 +0100)
>>>Uwe Hoffmann wrote:
>>>>cjl schrieb:
>>>>
>>>>>I do set pythonpath, see above.
>>>>
>>>>is pythonpath really case insensitive on windows ?
>>>
>>>Only because the Windows filesystem implements case-insensitive 
>>>semantics. This is nothing to do with Python:
>> 
>> That's nonsense: "Filenames are Case Sensitive on NTFS Volumes"[1]
>> 
>> Thorsten
>> [1] http://support.microsoft.com/kb/100625/en-us
> 
> Sigh. Right, the semantics are actually inside the subsystem accessing 
> the filesystem, if I have to dot every I and cross every T. Note that 
> the reference you quote includes the test """However, if you attempt to 
> open one of these files in a Win32 application, such as Notepad, you 
> would only have access to one of the files, regardless of the case of 
> the filename you type in the Open File dialog box."""
> 
> So perhaps I should have said the Win32 API implements case-insensitive 
> semantics? Sure, if you want to use the POSIX compatibility layer it's 
> absolutely possible to create several files that Win32 applications will 
> be completely unable to distinguish between. Whatever good that might do 
> you.
> 
> Sheesh, the nits that get picked on this list nowadays. I can remember 
> when it used to be fun, not an exercise in ego inflation.

It's exactly the same issue as with the environment variables: "You
live and learn."[1]

Thorsten
[1] http://groups.google.com/group/comp.lang.python/msg/249fa3ce96e757b3


From jjl at pobox.com  Sat Sep 16 19:42:32 2006
From: jjl at pobox.com (John J. Lee)
Date: Sat, 16 Sep 2006 23:42:32 GMT
Subject: urllib en https
References: <4508649d$0$4521$e4fe514c@news.xs4all.nl>
	<4508720c$0$4520$e4fe514c@news.xs4all.nl>
	<2C6Og.1077$UG4.342@newsread2.news.pas.earthlink.net>
	<87r6yby5d8.fsf@pobox.com>
Message-ID: <87mz8zxtsm.fsf@pobox.com>

jjl at pobox.com (John J. Lee) writes:
[...]
> Does ActiveState do a unix distribution of Python now?
> 
> (The OP seemed to have a Unix-like system -- so probably he didn't
> install have the right rpm or whatever installed -- a very common
> problem with people trying to use SSL on linux distributions.)
> 
> 
> John

Hmm, so they do (maybe they always did?):

| ActivePython is ActiveState's quality-assured, ready-to-install
| distribution of Python, available for AIX, HP-UX, Linux, Mac OS X,
| Solaris, and Windows. The standard ActivePython distribution is
| available for free download.


Still, I suspect a missing system package is a more likely culprit.


John


From wescpy at gmail.com  Tue Sep 26 17:58:10 2006
From: wescpy at gmail.com (wesley chun)
Date: Tue, 26 Sep 2006 14:58:10 -0700
Subject: Surprise using the 'is' operator
Message-ID: <78b3a9580609261458q257f565fi4acd1299c35628f0@mail.gmail.com>

> "Terry Reedy" <tjr... at udel.edu> wrote:
> > as a side note, the ints that are cached (for current versions of
> > Python) are in range(-1, 100)... is this documented somewhere?
> Not true for at least 2.4 and 2.5.  The cached range has expanded

oops, apologies to all... it really *is* subject to change. ;-) it's
now range(-5, 257).

-wesley


From sjmachin at lexicon.net  Sat Sep  2 00:48:06 2006
From: sjmachin at lexicon.net (John Machin)
Date: 1 Sep 2006 21:48:06 -0700
Subject: IndentationError: expected an indented block
In-Reply-To: <1157170194.270363.67430@h48g2000cwc.googlegroups.com>
References: <1157170194.270363.67430@h48g2000cwc.googlegroups.com>
Message-ID: <1157172486.101448.129940@m73g2000cwd.googlegroups.com>


casioculture at gmail.com wrote:
> Haha. How can I fix this!

Haha to you too. Position your cursor at the scene of the crime. Hit
the space-bar 4 times. Hit Ctrl-s. Try running it again.

If you would prefer a more sensible answer, you might like to ask a
more sensible question, which would include a copy/paste of the error
message plus a few lines of context.

Cheers,
John



From jhagen at ucsc.edu  Wed Sep 27 06:46:04 2006
From: jhagen at ucsc.edu (Jeff Hagen)
Date: Wed, 27 Sep 2006 03:46:04 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <efdftc$9tl$1@wake.carmen.se>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<efdftc$9tl$1@wake.carmen.se>
Message-ID: <451a58e6$1@darkstar>

I do... but then I'm a grad student so I'm not sure what extent you 
would call it "a living"

I know that Python is used __extensively__ in academia for running 
experiments where speed is not important.

-Jeff

Magnus Lycka wrote:
> walterbyrd wrote:
>> If so, I doubt there are many


From deets at nospam.web.de  Thu Sep  7 17:06:54 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 07 Sep 2006 23:06:54 +0200
Subject: [ANN] IronPython 1.0 released today!
In-Reply-To: <Xns9837BD23B744Cduncanbooth@127.0.0.1>
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.124.1157638824.5279.python-list@python.org>
	<1hlb5vp.yekzc115cn2k3N%rhymes@myself.com>
	<Xns9837BD23B744Cduncanbooth@127.0.0.1>
Message-ID: <4mbfveF5ffu8U1@uni-berlin.de>

Duncan Booth schrieb:
> rhymes at myself.com (Lawrence Oluyede) wrote:
> 
>> Felipe Almeida Lessa <felipe.lessa at gmail.com> wrote:
>>> Does IronPython runs Twisted?
>> I really don't think so. They don't have many needed modules, like
>> select :-)
>>
> 
> So? IronPython has a select module although it doesn't seem to be complete 
> yet. The IronPython mailing list has discussions about getting CherryPy to 
> run, and it sounds as though it isn't quite there yet, but it is getting 
> there.

They do have some c-modules, in the core. For example some portmapping. 
I'm not fluent in that subject, so I can't judge the .net-portability of 
that, nor the importance for twisted in general.

Diez


From ak at silmarill.org  Sun Sep 24 12:39:49 2006
From: ak at silmarill.org (Rainy)
Date: 24 Sep 2006 09:39:49 -0700
Subject: Ideal python idle
In-Reply-To: <1159115564.370694.108190@i3g2000cwc.googlegroups.com>
References: <ZWsRg.5785$7I1.660@newssvr27.news.prodigy.net>
	<1159115564.370694.108190@i3g2000cwc.googlegroups.com>
Message-ID: <1159115989.209315.182590@m73g2000cwd.googlegroups.com>


Rainy wrote:

> [snip]

Oh, I see now that F9 designates output buffer. I usually use vim with
a log file and open the log file in a new Vim tab.



From steve at holdenweb.com  Fri Sep  8 04:11:42 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 09:11:42 +0100
Subject: Positive lookahead assertion
In-Reply-To: <45007616$0$19655$88260bb3@free.teranews.com>
References: <45006ede$0$19734$88260bb3@free.teranews.com>	<1157660939.252322.135820@e3g2000cwe.googlegroups.com>
	<45007616$0$19655$88260bb3@free.teranews.com>
Message-ID: <edr8in$v3g$1@sea.gmane.org>

tobiah wrote:
>>>Posted via a free Usenet account from http://www.teranews.com
>>
>>Its all about context. If you want to match something but only if it
>>precedes something else, then you follow the regular expression for
>>'something' by the regular expression for 'something else' where
>>`something else` is enclosed by (?=...)
>>
>>The regular expression engine will surreptitiously check that
>>'something else' does indeed follow, before returning any match of
>>'something'.
> 
> 
> 
> How would this differ from just
> 
> re.search('somethingsomething else')
> 
The difference is only significant if your pattern contains groups that 
should be available after the match is complete, or if the match is 
folloed by further match elements. A lookahead assertion does precisely 
that: it looks past the current cursor position and allows an assertion 
about the contents, but without moving the cursor position.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Fri Sep 29 11:32:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 17:32:33 +0200
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>
Message-ID: <efjeaf$mb5$2@sea.gmane.org>

Tim Williams wrote:

> def check_lock():
>     import os, sys
>     try:
>         os.remove({filename})
>     except:
>         if "Permission denied" in sys.exc_info()[1]:
>             print 'This program is already running'
>             sys.exit()
>     f_lock = open({filename},'w')

have you actually tried this on a Unix system ?

</F>



From fredrik at pythonware.com  Fri Sep 29 10:45:06 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 16:45:06 +0200
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <451D25A3.7010803@googlemail.com>
References: <mailman.801.1159372327.10491.python-list@python.org>	<1159531181.314800.224180@k70g2000cwa.googlegroups.com>	<mailman.936.1159535264.10491.python-list@python.org>	<7xk63mpzwr.fsf@ruckus.brouhaha.com>
	<451D25A3.7010803@googlemail.com>
Message-ID: <efjbhh$d9m$1@sea.gmane.org>

Hari Sekhon wrote:

> I'm not sure if that is a very old way of doing it, which is why I was 
> reluctant to do it. My way actually uses the process list of the os 
> (linux) and counts the number of instances. If it is more than 0 then 
> another process is running and the script exits gracefully.

the code that reliably identifies instances of a given program would be 
interesting to see.

> Also, apart from the fact the using lockfiles feels a bit 1970s, I have
 > found that in real usage of other programs within the company that use
 > lockfiles, it sometimes causes a bit of troubleshooting time when
 > it stops working due to a stale lockfile.

to minimize that risk, store the pid in the lockfile (and preferrably 
also the host name), and make sure that the program checks that the pid 
is still active before it "stops working".

</F>



From kbk at shore.net  Fri Sep  1 21:28:44 2006
From: kbk at shore.net (Kurt B. Kaiser)
Date: Fri, 1 Sep 2006 21:28:44 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200609020128.k821SicT001270@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  412 open ( +5) /  3397 closed ( +4) /  3809 total ( +9)
Bugs    :  900 open (+12) /  6149 closed ( +4) /  7049 total (+16)
RFE     :  233 open ( +1) /   236 closed ( +0) /   469 total ( +1)

New / Reopened Patches
______________________

set literals  (2006-08-28)
CLOSED http://python.org/sf/1547796  opened by  Georg Brandl

"for x in setliteral" peepholer optimization  (2006-08-28)
CLOSED http://python.org/sf/1548082  opened by  Georg Brandl

set comprehensions  (2006-08-29)
       http://python.org/sf/1548388  opened by  Georg Brandl

Fix for structmember conversion issues  (2006-08-29)
       http://python.org/sf/1549049  opened by  Roger Upole

Implementation of PEP 3102 Keyword Only Argument  (2006-08-31)
       http://python.org/sf/1549670  opened by  Jiwon Seo

Add a test suite for test_unittest  (2006-08-31)
       http://python.org/sf/1550272  opened by  Collin Winter

Fix numerous bugs in unittest  (2006-08-31)
       http://python.org/sf/1550273  opened by  Collin Winter

Ellipsis literal "..."  (2006-09-01)
       http://python.org/sf/1550786  opened by  Georg Brandl

make exec a function  (2006-09-01)
       http://python.org/sf/1550800  opened by  Georg Brandl

Patches Closed
______________

Allow os.listdir to accept file names longer than MAX_PATH  (2006-04-26)
       http://python.org/sf/1477350  closed by  rupole

set literals  (2006-08-28)
       http://python.org/sf/1547796  closed by  gbrandl

pybench.py error reporting broken for bad -s filename  (2006-08-25)
       http://python.org/sf/1546372  closed by  lemburg

"if x in setliteral" peepholer optimization  (2006-08-28)
       http://python.org/sf/1548082  closed by  gvanrossum

New / Reopened Bugs
___________________

Typo in Language Reference Section 3.2 Class Instances  (2006-08-28)
       http://python.org/sf/1547931  opened by  whesse_at_clarkson

curses module segfaults on invalid tparm arguments  (2006-08-28)
       http://python.org/sf/1548092  opened by  Marien Zwart

Add 'find' method to sequence types  (2006-08-28)
       http://python.org/sf/1548178  opened by  kovan

Recursion limit exceeded in the match function  (2006-08-29)
CLOSED http://python.org/sf/1548252  opened by  wojtekwu

sgmllib.sgmlparser is not thread safe  (2006-08-28)
       http://python.org/sf/1548288  opened by  Andres Riancho

whichdb too dumb  (2006-08-28)
       http://python.org/sf/1548332  opened by  Curtis Doty

filterwarnings('error') has no effect  (2006-08-29)
       http://python.org/sf/1548371  opened by  Roger Upole

C modules reloaded on certain failed imports  (2006-08-29)
       http://python.org/sf/1548687  opened by  Josiah Carlson

shlex (or perhaps cStringIO) and unicode strings  (2006-08-29)
       http://python.org/sf/1548891  opened by  Erwin S. Andreasen

bug in classlevel variabels  (2006-08-30)
CLOSED http://python.org/sf/1549499  opened by  Thomas Dybdahl Ahle

Pdb parser bug  (2006-08-30)
       http://python.org/sf/1549574  opened by  Alexander Belopolsky

urlparse return exchanged values  (2006-08-30)
CLOSED http://python.org/sf/1549589  opened by  Oscar Acena

Enhance and correct unittest's docs (redux)  (2006-08-31)
       http://python.org/sf/1550263  reopened by  fdrake

Enhance and correct unittest's docs (redux)  (2006-08-31)
       http://python.org/sf/1550263  opened by  Collin Winter

inspect module and class startlineno  (2006-09-01)
       http://python.org/sf/1550524  opened by  Ali Gholami Rudi

SWIG wrappers incompatible with 2.5c1  (2006-09-01)
       http://python.org/sf/1550559  opened by  Andrew Gregory

itertools.tee raises SystemError  (2006-09-01)
       http://python.org/sf/1550714  opened by  Alexander Belopolsky

itertools.tee raises SystemError  (2006-09-01)
CLOSED http://python.org/sf/1550761  opened by  Alexander Belopolsky

Bugs Closed
___________

x!=y and [x]=[y] (!)  (2006-08-22)
       http://python.org/sf/1544762  closed by  rhettinger

Recursion limit exceeded in the match function  (2006-08-29)
       http://python.org/sf/1548252  closed by  gbrandl

bug in classlevel variabels  (2006-08-30)
       http://python.org/sf/1549499  closed by  gbrandl

urlparse return exchanged values  (2006-08-30)
       http://python.org/sf/1549589  closed by  gbrandl

Enhance and correct unittest's docs (redux)  (2006-08-31)
       http://python.org/sf/1550263  closed by  fdrake

itertools.tee raises SystemError  (2006-09-01)
       http://python.org/sf/1550761  deleted by  belopolsky



From projecktzero at yahoo.com  Thu Sep 14 12:34:04 2006
From: projecktzero at yahoo.com (projecktzero)
Date: 14 Sep 2006 09:34:04 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <7x4pvckyyu.fsf@ruckus.brouhaha.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>
	<7x4pvckyyu.fsf@ruckus.brouhaha.com>
Message-ID: <1158251644.747248.12710@k70g2000cwa.googlegroups.com>

Paul Rubin wrote:
> Antoon Pardon <apardon at forel.vub.ac.be> writes:
> > This is just an idea of mine, nothing I expect python to adapt.
> > But just suppose the language allowed for words in bold. A word
> > in bold would be considered a reserved word, a word in non bold
> > would be an identifier.
>
> Heh, sounds like ColorForth, in which words meant different things
> depending on what color they were written in (www.colorforth.com).
> Madness, if you ask me ;-).

Yikes! I'm color blind! (I've heard that 10% of the male population is
color blind.) I'd be a very poor ColorForth programmer. =)



From fiepye at atlas.cz  Wed Sep  6 15:25:43 2006
From: fiepye at atlas.cz (Fie Pye)
Date: Wed, 06 Sep 2006 21:25:43 +0200
Subject: Scientific computing and data visualization.
Message-ID: <bad9aa44c01d4aed8eca236810337ea4@atlas.cz>

	
	Hallo
	
	I would like to have a high class open source tools for scientific computing and powerful 2D and 3D data visualisation. Therefore I chose python, numpy and scipy as a base. Now I am in search for a visualisation tool. I tried matplotlib and py_opendx with OpenDx. OpenDx seems to me very good but the project py_opendx looks like closed. After py_opendx instalation and subsequent testing I got an error that needs discussion with author or an experienced user. Unfortunately a mail to author returned as undeliverable.
	
	Does anybody now about suitable visualisation tool?
	
	Does anybody have an experience with OpenDx and py_opendx instalation?
	
	Thanks for your response.
	
	fiepye





From cm012b5105 at blueyonder.co.uk  Sun Sep 24 18:11:38 2006
From: cm012b5105 at blueyonder.co.uk (Nigel)
Date: Sun, 24 Sep 2006 15:11:38 -0700
Subject: interactive programe-pyTTS &Tk
Message-ID: <BGEEIMOJIKBNCBHFGPEAIEADCAAA.cm012b5105@blueyonder.co.uk>

from Tkinter import *
import pyTTS
Hi i am trying to get a button so that when i click on it i hear a voice say
"Hi Molly" this is my code so far.Can any one shed any light on this for
please.
Thanks Nige.

class MyApp:
	def __init__(self, parent):
		self.myContainer1 = Frame(parent)
		self.myContainer1.pack()

		self.button1 = Button(self.myContainer1)
		self.button1  ["text"] = "Hi Molly!"   ### (1)
		self.button1["background"] = "green"     ### (1)
		tts = pyTTS.Create()
		tts.Speak ('hello molly')
		self.button1.pack()

		self.button2 = Button(self.myContainer1)
		self.button2.configure(text="Connor!") ### (2)
		self.button2.configure(background="tan")               ### (2)
		self.button2.pack()


		self.button3 = Button(self.myContainer1)
		self.button3.configure(text="Nige", background="cyan")  ### (3)
		self.button3.pack()

		self.button4 = Button(self.myContainer1, text="Carmel!", background="red")
### (4)
		self.button4.pack()
		def button1Click(self, event):    ### (3)
                    tts = pyTTS.Create()
		if self.button1:
			self.button1["background"] = "yellow"
			tts.Speak('Hello Molly.') ### (4)
		else:
			self.button1["background"] = "green"
root = Tk()
myapp = MyApp(root)
root.mainloop()
#"""<tt060.py




From bjobrien62 at gmail.com  Wed Sep 20 12:14:33 2006
From: bjobrien62 at gmail.com (SpreadTooThin)
Date: 20 Sep 2006 09:14:33 -0700
Subject: get process id...
Message-ID: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>

How does one get the process id?
Is there a method for windows and unix (mac os x etc...)



From fredrik at pythonware.com  Fri Sep  1 09:29:17 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 15:29:17 +0200
Subject: OO on python real life tutorial?
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
Message-ID: <ed9cje$4q0$1@sea.gmane.org>

"filippo" wrote:

> I coded my +10k lines app using Perl/Tk. It is something like a hotel
> software manager, it has a bunch of windows to manage the arrivals,
> bills etc etc. I want to port this on Python/WxPython but I'd like to
> get benefit of python, not just doing a row by row raw porting.
>
> My problem is that I cannot figure out how OO could be useful in my
> case. Is there a OO tutorial out there to help me?

How many do you need ? ;-)

Here's Jay Parlar's proposed class intro for the python tutorial:

    http://pytut.infogami.com/node11-baseline.html

I haven't seen them myself, but the related ShowMeDo videos might be
helpful:

    http://showmedo.com/videos/series?name=IntroductionToPythonObjectsUsingIPython_JerolH

See also chapters 12-16 in "How to Think Like a Computer Scientist":

    http://www.ibiblio.org/obp/thinkCSpy/

</F> 





From onurb at xiludom.gro  Fri Sep  8 04:34:29 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 08 Sep 2006 10:34:29 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
Message-ID: <45012b16$0$1374$636a55ce@news.free.fr>

Frank Millman wrote:
> Hi all
> 
> I recently posted a question about subclassing. I did not explain my
> full requirement very clearly, and my proposed solution was not pretty.
> I will attempt to explain what I am trying to do more fully, and
> describe a possible solution. It is still not pretty, so I would
> appreciate any comments.
> 
> I have a base class (ClassA), which is an abstract class. Most of the
> methods and attributes are common to all subclasses, so there is not
> much they have to override.
> 
> I have a subclass (ClassB) of my base class, which is also abstract. It
> represents a subset of ClassA, and overrides some of its methods. When
> I create a concrete class (is that the correct term?) I subclass either
> from ClassA or from ClassB.
> 
> Now I want to represent a different subset of ClassA, which overrides
> some of its methods. This subset can apply to ClassB as well as to
> ClassA.
> 
> In pseudo terms, I want ClassA1, ClassA2, ClassB1, and ClassB2 where A1
> is the base class, B overides some methods, and 2 overrides other
> methods, and I want to subclass from any of them.
> 
> My original solution involved passing 1 or 2 as an argument, and
> putting some code into __init__ which redefined certain methods if it
> received a 2. This worked, but it meant that I could not then easily
> redefine the method again in a concrete class.
> 
> My new idea is to use multiple inheritance. This is how it would work.
> 
> class ClassA(object):
>     def __init__(self):
>         pass
>     def test1(self):
>         print 'Base method 1'
>     def test2(self):
>         print 'Base method 2'
> 
> class ClassB(ClassA):
>     def __init__(self):
>         ClassA.__init__(self)
>     def test1(self):
>         print 'Overriding method 1'
> 
> class Class2(object):
>     def test2(self):
>         print 'Overriding method 2'

To be pedantic, Class2.test2 is not overridding anything, since there's
no "test2" method in it's parent class.

> Now I can set up the following concrete classes -
> 
> class ClassA1(ClassA):
>     def __init__(self):
>         ClassA.__init__(self)

If that's the only thing you do in the __init__, then don't bother write
an init method at all.

> class ClassA2(Class2,ClassA):
>     def __init__(self):
>         ClassA.__init__(self)

May I suggest having a look at super() ?

> class ClassB1(ClassB):
>     def __init__(self):
>         ClassB.__init__(self)
> 
> class ClassB2(Class2,ClassB):
>     def __init__(self):
>         ClassB.__init__(self)
> 
> Now if I do the following, I get the results shown, which is what I
> want -
> 
> ClassA1().test1() - 'Base method 1'
> ClassA1().test2() - 'Base method 2'
> ClassB1().test1() - 'Overriding method 1'
> ClassB1().test2() - 'Base method 2'
> ClassA2().test1() - 'Base method 1'
> ClassA2().test2() - 'Overriding method 2'
> ClassB2().test1() - 'Overriding method 1'
> ClassB2().test2() - 'Overriding method 2'
> 
> Now for the real test -
> 
> class ClassC3(Class2,ClassB):
>     def __init__(self):
>        ClassB.__init__(self)
>     def test1(self):
>         print 'Overriding method 1 from ClassC3'
>     def test2(self):
>         print 'Overriding method 2 from ClassC3'
> 
> ClassC3().test1() - 'Overriding method 1 from ClassC3'
> ClassC3().test2() - 'Overriding method 2 from ClassC3'
> 
> So it works. However, using multiple inheritance is not ideal,

Why so ? Multiple inheritence is a pretty useful tool - but it can
become tricky very soon. IMHO, it's best use is for mixin classes...

> and I
> believe it is not even supported in some languages.

A lot of things aren't even supported in some languages !-)

> Can anyone suggest
> a better way of tackling this problem?

Not out of my hat. Just a few considerations on Python and OO: Python
being dynamically typed, inheritence is only about sharing
implementation. There's another way to do share implementation -
composition/delegation. It's more flexible, and can avoid "cartesian
product" multiplication of classes. It's also less advertised than
inheritance - probably because of "some languages" that fail to offer
any support for it. The good news here is that Python makes it a breeze,
thanks to the __getattr__/__setattr__ hooks. Now I don't know if it
makes any sense WRT/ your current problem...


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From Michael.J.Fromberger at Clothing.Dartmouth.EDU  Thu Sep 21 12:22:24 2006
From: Michael.J.Fromberger at Clothing.Dartmouth.EDU (Michael J. Fromberger)
Date: Thu, 21 Sep 2006 12:22:24 -0400
Subject: Python 2.5 and Unicode on MacOS
Message-ID: <Michael.J.Fromberger-3982BB.12222321092006@localhost>

I'm not sure whether this is a bug, or a feature that I do not fully 
understand.  I would therefore appreciate some advice, if you have any, 
on the following problem:

I have just installed Python 2.5 (release) under MacOS 10.4.7 ("Tiger").  
Unfortunately, the unit test "test_unicodefile.py" (in Lib/tests/) 
exhibits a warning when invoked, as shown here:

[Lib/test] % python2.5 test_unicode_file.py
test_directories (__main__.TestUnicodeFiles) ... ok
test_unicode_file.py:103: UnicodeWarning: Unicode equal comparison 
failed to convert both arguments to Unicode - interpreting them as being 
unequal
  filename1==filename2
test_equivalent_files (__main__.TestUnicodeFiles) ... ok
test_single_files (__main__.TestUnicodeFiles) ... ok

----------------------------------------------------------------------
Ran 3 tests in 0.252s

As you can see, the unit tests appear to pass, but I suspect there is a 
hidden problem, as a subsequent build of the latest version of 
BeautifulSoup now fails its unit tests, citing the same warning.  I 
can't tell whether this is a problem with the way BeautifulSoup is doing 
things, or whether there is a more general problem with Unicode support 
in the MacOS build of Python 2.5.

For reference, I have done a framework build of Python, and it seems to 
work fine for everything else I have tried.  Do you have any idea what 
might be causing this trouble?  I'd be grateful for your insights.

Cheers,
-M

-- 
Michael J. Fromberger             | Lecturer, Dept. of Computer Science
http://www.dartmouth.edu/~sting/  | Dartmouth College, Hanover, NH, USA


From roy at panix.com  Mon Sep  4 14:12:37 2006
From: roy at panix.com (Roy Smith)
Date: Mon, 04 Sep 2006 14:12:37 -0400
Subject: Where to find fpconst?
References: <roy-19E7C6.13275304092006@reader2.panix.com>
	<1157391637.121891.85540@i42g2000cwa.googlegroups.com>
Message-ID: <roy-203444.14123704092006@reader2.panix.com>

In article <1157391637.121891.85540 at i42g2000cwa.googlegroups.com>,
 "Rob De Almeida" <ralmeida at gmail.com> wrote:

> http://www.python.org/pypi/fpconst/

Thanks!


From onurb at xiludom.gro  Wed Sep 20 04:04:11 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 20 Sep 2006 10:04:11 +0200
Subject: include statement
In-Reply-To: <1158735048.114574.56190@e3g2000cwe.googlegroups.com>
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
	<mailman.314.1158733422.10491.python-list@python.org>
	<1158735048.114574.56190@e3g2000cwe.googlegroups.com>
Message-ID: <4510f5fd$0$14664$626a54ce@news.free.fr>

joakim.hove at gmail.com wrote:
> Thanks to all who took time to answer!
> 
> 
>>> is it possible in python to include another python source file into the
>>> current namespace, i.e.completely analogous to the #include statement
>>> in C.
> 
> [...]
> 
>> Tell us why you are contemplating such a thing, and someone
>> here will help you implement it the "Pythonic" way.
> 
> My application has a configuration file where lots of variables are
> set. (The configuration file is python source, so there is no
> home-brewed parsing involved.) The configuration file is starting to
> get quite large and unwieldy, so for this reason I would like to split
> it in several files.
> 
> I know I could do:
> from configA import *
> from configB import *
> 
> But I felt that the import statemant was 'more' than I wanted. Maybe I
> am just pedantic.

Maybe... "import" is the very appropriate statement for what you want
here IMVHO. I'd just put the config<X>.py files into a 'config'
directory, add an __init__.py, and put the 'from configX import *'
there. Then in the app code, a simple 'import config', which allow acces
to config vars via 'config.varname' (clean namespaces really improve
maintainability).

My 2 cents

> Regards
> 
> Joakim
> 


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From paddy3118 at netscape.net  Wed Sep 27 16:40:59 2006
From: paddy3118 at netscape.net (Paddy)
Date: 27 Sep 2006 13:40:59 -0700
Subject: OT: productivity and long computing delays
In-Reply-To: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
Message-ID: <1159389659.494436.156780@m73g2000cwd.googlegroups.com>


Paul Rubin wrote:
> I'm doing something where I frequently but unpredictably (i.e. I can't
> plan for it in advance) hit a snag that requires me to rebuild a large
> project.  The rebuild takes a couple hours.  During that time, I'm
> twiddling my thumbs and/or posting here, i.e. not getting anything
> useful done.  But the delay is not long enough that I can really
> switch to another project for a while.
>
> Anyone got any suggestions?  How do you deal with this?  It could be
> mitigated with a faster computer (I'm using a 1.2 ghz Pentium M) but
> the overall task isn't large enough to justify going out and buying
> one.  Anyway, I did the same build on a 2 ghz Athlon 64 and was
> surprised that the speedup was only 35% or so.  I'd have to get a
> multiprocessor box to obtain really substantial gains.

Read documentation,
Write documentation.
Play Freecell ;-)

- Paddy.



From grante at visi.com  Sat Sep 16 08:56:06 2006
From: grante at visi.com (Grant Edwards)
Date: Sat, 16 Sep 2006 12:56:06 -0000
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<12glelm8a37tp63@corp.supernews.com>
	<1158332322.661048.38360@b28g2000cwb.googlegroups.com>
	<mailman.144.1158345079.10491.python-list@python.org>
	<1158404125.762979.75880@h48g2000cwc.googlegroups.com>
Message-ID: <12gnt36rgm7cqce@corp.supernews.com>

On 2006-09-16, Janto Dreijer <jantod at gmail.com> wrote:
> Steve Holden wrote:
>> Note that TCP and UDP port spaces are disjoint, so there's no way for
>> TCP and UDP to use "the same port" - they can, however, use the same
>> port number. Basically the TCP and UDP spaces have nothing to do with
>> each other.
>>
>> Most dynamic NAT gateways will respond to an outgoing UDP datagram by
>> mapping the internal client's UDP port to a UDP port on the NAT
>> gateway's external interface, and setting a converse mapping that will
>> allow the server to respond, even though technically there isn't a
>> "connection". The NAT table entries will typically be timed out after a
>> short period of non-use.
>
> So are you saying one can't use TCP to punch a hole for UDP?

Yes, that's what he's saying -- or at least that there's no
reason to expect it to work.

-- 
Grant Edwards
grante at visi.com


From ilias at lazaridis.com  Mon Sep 18 00:42:37 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 17 Sep 2006 21:42:37 -0700
Subject: SETUP - Introducing "setuptools" to a project without risk
Message-ID: <1158554557.797891.233280@k70g2000cwa.googlegroups.com>

If I understood things right, setuptools extends the functionality of
distutils

Thus replacing within a setup.py:

from distutils.core import setup

with

try:
    from setuptools import setup
except ImportError:
    from distutils.core import setup

should have the following behaviour:

* does not change distutils functionality on any system (with or
without setuptools installed)
* adds setuptools functionality on a system with setuptools installed

This is especially important to obtain the convenient "python setup.py
develop" command.

Can someone confirm that the addition is non-critical? (I've not asked
on the setuptools list in order to get a neutral view of users).

context: http://trac.edgewall.org/ticket/3743

.

--
http://lazaridis.com



From http  Wed Sep 13 03:27:53 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 00:27:53 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>
Message-ID: <7x4pvckyyu.fsf@ruckus.brouhaha.com>

Antoon Pardon <apardon at forel.vub.ac.be> writes:
> This is just an idea of mine, nothing I expect python to adapt.
> But just suppose the language allowed for words in bold. A word
> in bold would be considered a reserved word, a word in non bold
> would be an identifier. 

Heh, sounds like ColorForth, in which words meant different things
depending on what color they were written in (www.colorforth.com).
Madness, if you ask me ;-).


From robert.kern at gmail.com  Fri Sep 29 14:46:41 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 29 Sep 2006 13:46:41 -0500
Subject: another distutils question
In-Reply-To: <efjmjp$mr2$1@sea.gmane.org>
References: <efjmjp$mr2$1@sea.gmane.org>
Message-ID: <efjpma$16d$1@sea.gmane.org>

Eric S. Johansson wrote:
> is there anyway I can, in a setup.py file, set  and internal equivalent 
> to the '--install-scripts' commandline option?

Please don't. Hard-coding that interferes with the user's decision of where 
things should go. Only the user should be making that decision, not the package 
author.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From steve at holdenweb.com  Wed Sep 13 10:35:03 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 10:35:03 -0400
Subject: Gadfly server startup error
In-Reply-To: <h0blt3-5v9.ln1@prcm.tecont.de>
References: <g3cjt3-ub6.ln1@prcm.tecont.de>	<mailman.407.1158108135.5279.python-list@python.org>
	<h0blt3-5v9.ln1@prcm.tecont.de>
Message-ID: <ee94tc$lj9$1@sea.gmane.org>

Ralf Muschall wrote:
> Steve Holden wrote:
> 
> 
>>You're already doing better than I am. On Cygwin 2.5rc2 and Windows 
>>2.4.2 I can't even get it to runs its tests properly:
> 
> 
> I don't remember whether I looked into that at all.
> 
> ....
> 
>>NameError: global name 'Server' is not defined
> 
> 
> ....
> 
>>Time to report a bug, methinks? Makes SQLite look good  ...
> 
> 
> Carl Waldbieser reported this bug (and a few others, including
> fixes) in April 04 (entry 94049[35]).  It seems the project
> fell asleep four years ago (but in "News" on SF is a more recent
> message from the author pointing to xsdb).
> 
Yes, the whole Gadfly SF web seems to be a bit of a mess.

That news page talks about a "new release", but nothing has actually 
been released, so I presume that code is in SVN now. Frankly I'm not 
encouraged to use it, though it's a pity: I discussed Gadfly somewhat in 
"Python Web Programming", and it would have been nice to see it survive.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From st at tobiah.org  Thu Sep 14 17:09:05 2006
From: st at tobiah.org (tobiah)
Date: Thu, 14 Sep 2006 14:09:05 -0700
Subject: Specify string with uniform indentation ignored
Message-ID: <4509b7df$0$19672$88260bb3@free.teranews.com>

Like a docstring, I would like to specify a string such as:

def thing:
	
	string = """
		function otherlang(){
			doit()
		}
	"""

And have the string end up actually being defined as:

"""
function otherlang(){
	doit()
}
"""

Is there a built in way to do this?  I don't much
care for:

	string = "function otherlang(){"
	string += "	doit()"
	string += "}"

Thanks,

Tobiah

-- 
Posted via a free Usenet account from http://www.teranews.com



From wescpy at gmail.com  Sat Sep 23 14:19:04 2006
From: wescpy at gmail.com (wesley chun)
Date: Sat, 23 Sep 2006 11:19:04 -0700
Subject: Help
Message-ID: <78b3a9580609231119t41244364qc1dda5d08d09d118@mail.gmail.com>

> From: "Rrajal" <rrajal at gmail.com>
> Date: Mon, Sep 18 2006 9:50 am
> Subject: Re: Help
> Groups: comp.lang.python
>
> Hi there, I am new in this subject so could you please tell
> me from  where I can get help (or good e-book) of python?


do you have some kind of programming background? if so,
good intro books include Hetland's "Beginning Python",
Pilgrim's "Dive into Python", and O'Reilly's "Learning Python".
there is an online version of Dive at http://diveintopython.org
if you're looking for something more comprehensive, i wrote
"Core Python Programming", but it is much longer than the
others, so if you want a quick intro, it would not be for you.

here's a nice list and description of most Python books:
http://wiki.python.org/moin/PythonBooks

for those are are new to programming altogether, you can
try Dawson's "Absolute Beginner" or the "Learn to Program"
by Gauld, but since it's dated, it's best to check out Alan's
tutorial at:http://www.freenetpages.co.uk/hp/alan.gauld/

cheers!
-- wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From larry at hastings.org  Fri Sep 29 10:34:42 2006
From: larry at hastings.org (Larry Hastings)
Date: 29 Sep 2006 07:34:42 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
	<mailman.932.1159533269.10491.python-list@python.org>
Message-ID: <1159540482.924744.164420@k70g2000cwa.googlegroups.com>

Steve Holden wrote:

> you should diff your source against the current
> SVN repository and lodge that diff as a patch on SourceForge.

Okay, I'll try to do that today.


> Your suggested bug isn't, I think a real bug in the current
> implementation because as I understand it Python strings do always
> include a trailing null byte to act as a terminator when the string
> is passed to C code in extensions.

Ah!  Excellent point.  So the Python source tree *does* have an
official position on what the first byte of a zero-length string should
be.  I'll fix my code so that is ensured.


> Nice idea, though. You might also see how it does on tasks like
>
> s = ""
> for i in range(100000):
>     s += "a"

Sure.  Here are the results, but with range (10000000):
	Python 2.5 release: 31.0s
	Python 2.5 locally built: 30.7s
	Python 2.5 concat: 4.4s
        % Improvement: *697%*!

Woah!  Thanks for suggesting a benchmark where it really shines :)

The real big win here is storing eight pointers per concatenation
object.  That means 1/8th as many objects created/destroyed.

In testing your suggested benchmark, it overflowed the stack
when freeing the concatenation tree.  So I changed deallocation
of string concatenation objects so it's iterative down the
left-hand side like rendering; now it's happy again.  Thanks
again for suggesting the test.

It would still blow up if you ran
  s = ""
  for i in range(10000000):
    s = "a" + s
because it's only clever about recursion down the left-hand side.
So my advice is, don't.  :)

> Also note that some optimisation has recently been performed on string
> concatenation, which I presume your code has already taken into account.

Totally.  I'm just glad there was something left for me to contribute!


Rob Williscroft wrote:
> On the python 3k list there is a thread about stings becoming "views",
> I think this is similar to what you are doing here.

As I understand it, sort-of.  Definitely moreso in my section on THE
FUTURE--adding another subtype of string for slices which point into
other strings.  I believe views are more sophisticated however.


Felipe Almeida Lessa wrote:
> What about "a + b"? Or "a + b + c"? Does it have a large overhead on
> small string concatenations?

It's *slightly* slower for two:

def addTwoThings(a, b):
    return a + b
for i in range(10000000):
    x = addTwoThings("aaa", "bbb")

	Python 2.5 release: 6.219s
	Python 2.5 locally built: 6.219s
	Python 2.5 concat: 6.234s
	% improvement: -0.03%

But starts paying off already, even with three:

def addThreeThings(a, b, c):
    return a + b + c
for i in range(10000000):
    x = addThreeThings("aaa", "bbb", "ccc")

	Python 2.5 release: 7.9s
	Python 2.5 locally built: 7.7s
	Python 2.5 concat: 7.2s
	% improvement: 6.94%

Note that I was lazy and only did one benchmark run apiece.

Also, keep in mind that memory utilization will be a little higher
with the string concatenation objects.


Carl Friedrich Bolz wrote:
> Robin Becker wrote:
> > wouldn't this approach apply to other additions eg list+list seq+seq etc
> > etc.
> no, I think it depends on strings being immutable.

Exactly.


/larry/



From franz.steinhaeusler at gmx.at  Fri Sep 15 06:09:49 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Fri, 15 Sep 2006 12:09:49 +0200
Subject: [ANN] XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
Message-ID: <qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>

On Thu, 14 Sep 2006 19:36:01 GMT, Nemesis <nemesis at nowhere.invalid>
wrote:

>Mentre io pensavo ad una intro simpatica "Franz Steinhaeusler"
>scriveva:
>
>>>XPN (X Python Newsreader) is a multi-platform newsreader with Unicode
>[...]

Hello Nemesis,

>> Hello Nemesis,
>> that is a great program, thank you.
>
>Thanks.

you're welcome.

>
>> I will try to use it and also attempt to 
>> customize it, so that it works like forte agent.
>> <ironic>Even better would it be to have it in wxPython</ironic>
>
>I disagree :-D

He he :)

>
>> Some little points:
>>
>> There is no progress bar or other info, if I subscribe one list.
>> There is a little in the lower left corner, but if a lot of headers
>> and bodies are received, the program seems to hang.
>> I actually killed it, because I thought that hanging.
>
>XPN is monothreaded, so when it is downloading the headers (it is a
>monolotic job) the progress bar can't be updated.
>
>> It would be nice, if I click on the groups pane another group, 
>> the messages appear immediatly, without needing to double click the
>> group.
>
>You can configure this behaviour, in the Configure Window go to
>"Misc"->"Miscellaneous" and you'll find two check buttons
>One Click Enter Group
>One Click Enter Article

Thanks, this is quite useful.

>
>> When composing messages, the tab size is 8. It would be nice to 
>> have the possibility to adjust this size.
>
>Hmm, it is a GTK default I don't know if I can change it, I'll check it.

Not so important.

A few other notes (or should I post into the feature requests on
sourceforge?)

little point: I find it superfluos on the header pane, to always have
the term "Re:" before (it would probaly easier to read without this
text).

an option possibly (as in agent): if you click on the tree the "+" sign,
it would be more convenient (for me) to open *all* subbranches, this
means show all responses headers for this thread.

if you change the groups, it would be nice to remember the position of
the last readed thread in the header pane, which means changing forth
and back to a certain group (as option for example).



From brant at mac.com  Wed Sep 20 18:49:21 2006
From: brant at mac.com (Brant Sears)
Date: Wed, 20 Sep 2006 18:49:21 -0400
Subject: Trying to run an external program
Message-ID: <989A9793-FB9F-4E94-AFFF-4CB175231869@mac.com>

Hi. I'm new to Python and I am trying to use the latest release (2.5)  
on Windows XP.

What I want to do is execute a program and have the results of the  
execution assigned to a variable. According to the documentation the  
way to do this is as follows:

import commands
x = commands.getstatusoutput('dir')

This should assign "x" to be the output of the command "dir".  
However, when I run this (or any other command), x ends up being:

(1, "'{' is not recognized as an internal or external command, 
\noperable program or batch file.")

 From looking through the documentation, I'm believing that the  
implementation of commands.getstatusoutput is actually some multi- 
step thing that starts with issuing the bracket character that is  
being choked on. This leads me to believe that Python or perhaps just  
the commands module is not setup correctly on my computer.

I installed Python using the Python2-5.msi link that I found at:
http://www.python.org/download/releases/2.5/

I left everything the default during installation, so Python was  
installed to C:\Python25. The only other thing I did was add this  
PATH variable on my computer.

Any ideas on what I might do to troubleshoot this?

Thanks!

Brant Sears


From thermate at india.com  Tue Sep  5 20:26:36 2006
From: thermate at india.com (thermate at india.com)
Date: 5 Sep 2006 17:26:36 -0700
Subject: EVIDENCE: 911 was CONTROLLED DEMOLITION to make muslims 2nd class
Message-ID: <1157502396.660312.219910@p79g2000cwp.googlegroups.com>

EVIDENCE: 911 was CONTROLLED DEMOLITION to make muslims 2nd class

We have now video evidence that 911 was an INSIDE JOB like the USS
Liberty by ELEMENTS OF US GOVERNMENT.

Dont trust me!!!! Go and watch the videos on youtube.com and
video.google.com ..........
THEY ARE ... MY GOD ... GREAT VIDEOS ...

search terms on youtube and video.google :

thermate               <------ the material used by criminals
alex jones              <------ lead media man on this case
terror storm          <------- great video
loose change         <------ excellent video
steven jones           <--------- he is the professor who found
thermate in the samples of molten metal

There is a very hot competition going on between the agents of ACTUAL
TERRORISTS and the PUBLIC.

The TERRORISTS are trying to cover up by all kinds of tactics like
puting noise on top of the facts.
finding excuses to censor the sites but they will NEVER succeed. God is
on the side of honest and
innocent victims.

You have videos of thermate in operation. YOU WILL ENJOY THE DISCOVERY.

THERE is a video of Bush getting distracted when confronted with
"INSIDE JOB". You will LOVE IT.

There are excellent other links:

http://people.howstuffworks.com/conspiracy-theory.htm/printable
<--- has excellent links but written in a mild style

The NIST is trying to DO A COVERUP FOR THE ACTUAL TERRORISTS but the
brains of the people are working to counteract the false propaganda of
the TERRORISTS.

Here is the link:
http://www.st911.org/ <---- NIST released its FAKE FAQ only a few days
ago but REBUTTED IMMEDIATELY

Larry Silverstein the owner of WTC 1,2,7 who made 500 millions on the
insurance and his cryptic statements:
http://www.prisonplanet.com/articles/january2006/050106silversteinanswers.htm

THE SMOKING GUN PHOTOS ON THIS PAGE:

http://valis.gnn.tv/B15947
http://www.prisonplanet.com/articles/june2006/200606scientificanalysis.htm

Observe the clean cut at 45 degrees of the columns using thermate
cutter charges
to slide the building floors down. The normal cuts are always
perpendicular shortest cuts.

Other dedicated sites:

www.prisonplanet.com
http://infowars.com/

http://www.st911.org/   <----------   The scholarly journal of 911
studies.

They seem to have very nicely presented rebuttals to NIST FAQ only a
few days ago.
A very smart and a very aggressive group of scientists and engineers,
just like Mr Kaspersky who found the officially denied rootkit in Sony.

COPY AND PASTE FROM THE SITE:
----------------------------------------------
Responding to NIST's Official "Questions and Answers"

NIST and the World Trade Center: Official "Questions and Answers"

NIST's World Trade Center FAQ: A Reply
Jim Hoffman

Why NIST hasn't Answered its own Questions
Jim Fetzer

Why the NIST "Fact Sheet" Just Won't Do
Sean Glazier

Responses to NIST's FAQs
Kevin Ryan

NIST and "The Foot Of God"
Robert Rice

Experiments to test NIST "orange glow" hypothesis...
Steven E. Jones


CONTACT YOUR REPRESENTATIVES IN CONGRESS AND THE SENATE.
DEMAND A NEW AND INDEPENDENT INVESTIGATION OF THIS
CRIME OF THE CENTURY!

More 9/11 documentation:
http://www.st911.org/
http://www.septembereleventh.org/kc/multimedia/
http://911busters.com/911-Commission.html
http://www.septembereleventh.org/audio.php
http://911busters.com/SanFran04/index.html
http://www.911truth.org/index.php?topic=gallery
http://www.reopen911.org/
http://www.911truth.org/
http://www.911truthseekers.org/
http://www.911truthseekers.org/modules/news/
http://www.gnn.tv/
http://www.fema.gov/pdf/library/fema403_apc.pdf
http://www.911studies.com/index.html
http://www.septembereleventh.org/index.php
http://infowars.com/
http://www.whatreallyhappened.com/
http://www.mujca.com/index.htm
http://proliberty.com/observer/20051213.htm
http://911research.wtc7.net/index.html
http://www.physics.byu.edu/research/energy/htm7.html
http://911review.com/
http://guardian.250free.com/wtc/dust-cloud.htm
http://www.defenselink.mil/transcripts/2001/t11182001_t1012pm.html



From franz.steinhaeusler at gmx.at  Sun Sep 17 12:10:38 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Sun, 17 Sep 2006 18:10:38 +0200 (CEST)
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<20060916174324.2237.20755.XPN@orion.homeinvalid>
	<q2iog21vr7sfgc2dhjb4jj5ld3nprbnbd4@4ax.com>
	<20060917074241.2241.57001.XPN@orion.homeinvalid>
Message-ID: <eejs1t$rba$1@newsreader2.utanet.at>

Nemesis wrote:


Hello Nemesis,


this I post with XPN! ;)

> Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:
>
>>>> Ah, great. I changed, this was not working immediatly.
>>>> So I remembered, most often you have to restart the App, and so its is
>>>> working.
>>>Here is working fine.
>> I am on windows, is there maybe a difference (?).
>
> I don't think so, I use XPN alo on Win2000 and WinXP and this shortcut
> works fine on Windows too.
>

Ok.

> [threading]
>> Aha, I don't understand all the details anyway, in Forte the same
>> thread was ordered in.
>
> The References header contains the Message-id of the article as they
> appear in the thread, the last message-id in the references field is the
> message-id of the parent article.
> In-Reply-To is similar ... but it contains only the message-id of the
> parent article, it is not a standard usenet header it is used by
> mail-agents.
> I use only References to build threads ... maybe Agent uses also
> In-Reply-To.
>

Ok.

>>>It's a focus issue, in the search dialog the focus is set on the entry.
>>>The Esc key is not binded to any button by default.
>> That would be convenient, pressing "Enter" to perform the awaited 
>> process and cancel to abandon the dialogue.
>
> But in the search dialog before you start the search you have to write
> what you are searching ... so the software must be set on the entry.
>

Ack.

>
>> If you don't mind, I will make a thorough test :-)
>> I don't want to bother more than necessary.
>> I want to make it happen, that XPN will be my "default" Newsreader!!!
>> Many thanks again for your answers and this wonderful piece of
>> sofware!
>
> Thank you for your suggestions.
>

you'r welcome.

Again a few points! ;)

I managed it to get it run again. ;)

My next try was a second newsserver.
(It would be nice to have it in one installation,
but priority is not so high)

I have XPN in one directorry (for my default newsserver)
and I installed XPN in a second directory for Gmane.

--

A user defineable Title bar as in Agent would be good.
(Then I could name the first instance "My News" or so, and the 
second one "Gmane". So easier navigating in Windows and also 
the tips in the task bar could be helpful for that.

--

I find it useful in every program to have accelerator keys for 
buttons, radio boxes, ...; this means for example the underscor letter
on the first letter in the label. Some are, some are not.

--

The line spacing (vertically) in the header is a little higher than in wxPython programs
or also in Forte agent. I suspect, this is a "feature" in PyGtk.
narrower lines would display more headers, this means more headers would be visible at once.

--

Is Saving attachments possible? I didn't see a menu point, nor are the threads
are marked, having an attachment.

--
An option to set X-No Archive default in the subscribed groups would be nice.

--

Only an open thought:

I (am/was) a member of the python editor DrPython written in wxPython.
(Project is on the sourceforge page).
I contributed some plugins for that, and I like the idea very much.
The core of the program remains relativly small, and all the users can 
extend the program.
The author do not have to fulfil all feature requests in the core,
and can tell the users to extend the functionality with a plugin 
himself, or can assist him.
And aside from writing plugins, I enjoyed.
We have an repository of the plugins and there are far more than 10 available.
Would such an idea make sense for XPN?


XPN seems pretty stable and I enjoy this program more and more!

Cheers,

-- 
Franz Steinhaeusler



From frank at chagford.com  Sun Sep 17 02:18:30 2006
From: frank at chagford.com (Frank Millman)
Date: 16 Sep 2006 23:18:30 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <1158431981.048450.27810@i42g2000cwa.googlegroups.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
	<1158431981.048450.27810@i42g2000cwa.googlegroups.com>
Message-ID: <1158473910.095783.280630@e3g2000cwe.googlegroups.com>


sjdevnull at yahoo.com wrote:
> Frank Millman wrote:
> > Dale Strickland-Clark wrote:
> > > Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
> > > a newly inserted record?
> > >
>
> >
> > I used to use 'select lastval()', but I hit a problem. If I insert a
> > row into table A, I want the id of the row inserted. If it is a complex
> > insert, which triggers inserts into various other tables, some of which
> > may also be auto-incrementing, lastval() returns the id of the row last
> > inserted into any auto-incrementing table.
> >
> > I therefore use the following -
> >     cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)
>
> Aren't both of these inherently racey?  It seems to me like you need
> some kind of atomic insert-and-return-id value; otherwise you don't
> know if another thread/process has inserted something else in the table
> in between when you call insert and when you select lastval/currval.
>

Did you read my extract from the PostgreSQL docs -

"Notice that because this is returning a session-local value, it gives
a predictable answer whether or not other sessions have executed
nextval since the current session did."

For some reason Google Groups stuck a '>' at the beginning, so you may
have thought that it related to a previous message, but it was actually
part of my reply and refers  specifically to 'select currval()'.

Frank



From johnjsal at NOSPAMgmail.com  Fri Sep 29 09:50:27 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 13:50:27 GMT
Subject: sqlite3 error
In-Reply-To: <1159493520.289291.276850@b28g2000cwb.googlegroups.com>
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<1159394058.945948.119410@h48g2000cwc.googlegroups.com>
	<yCQSg.41$1n3.351@news.tufts.edu>
	<1159493520.289291.276850@b28g2000cwb.googlegroups.com>
Message-ID: <Dw9Tg.52$1n3.502@news.tufts.edu>

John Machin wrote:

> The problems are (1) there are cultures that don't have the concept of
> a surname, and if they do, it may not be the "last name" (2) the name
> may consist of only one word (giving you problems with "not null") or
> not even be a word.
> 
> It gets better:
> 
> Iceland: Jon Bjornsson and Hildur Bjornsdottir are the children of
> Bjorn Eiriksson
>
> etc. etc.

Ok, you make me want to crawl under my desk and whimper until 5pm. :)

Fortunately my program is just a test to give me something to do, and 
will only use the names of people already working here that happen to 
(for the most part) fit into my model (although they *are* all foreign, 
so it's good to keep these exceptions in mind.) And I guess it never 
hurts to consider these things for future expansion either.


From steve at holdenweb.com  Sun Sep 24 16:28:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 24 Sep 2006 16:28:51 -0400
Subject: IDLE - Customizing output format
In-Reply-To: <1159126159.462170.70420@d34g2000cwd.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
Message-ID: <ef6pog$ndo$2@sea.gmane.org>

Ilias Lazaridis wrote:
> Ilias Lazaridis wrote:
> 
>>IDLE has an output format like this:
>>
>> >>> object
>><type 'object'>
>> >>> type
>><type 'type'>
>> >>> object.__class__
>><type 'type'>
>> >>> object.__bases__
>>
>>How can I customize it to become like that:
>>
>> >>> object
>>     <type 'object'>
>> >>> type
>>     <type 'type'>
>> >>> object.__class__
>>     <type 'type'>
>> >>> object.__bases__
>>
>>or that:
>>
>> >>> object
>>   : <type 'object'>
>> >>> type
>>   : <type 'type'>
>> >>> object.__class__
>>   : <type 'type'>
>> >>> object.__bases__
>>
>>(preferably without modifying code)
> 
> 
> I assume this is not possible.
> 
> I am wondering that other users are not annoyed by this reduced
> readability.
> 
And I am wondering at your continual surprise when the rest of the world 
fails to share your perceptions. Doesn't this carry *any* information?

> anyway.
> 
Indeed.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From robert.kern at gmail.com  Fri Sep 29 22:16:24 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 29 Sep 2006 21:16:24 -0500
Subject: another distutils question
In-Reply-To: <pan.2006.09.30.01.38.39.530505@keithperkins.net>
References: <mailman.966.1159552468.10491.python-list@python.org>	<pan.2006.09.29.23.24.21.541676@keithperkins.net>	<mailman.985.1159574264.10491.python-list@python.org>
	<pan.2006.09.30.01.38.39.530505@keithperkins.net>
Message-ID: <efkk1i$aa1$1@sea.gmane.org>

Keith Perkins wrote:

> I did install it in ~/.script/data.txt, and distutils set the
> user/group as root.  Is it impossible to install this with distutils?
> Since I'm running setup as root, should I just add a class or method to
> chown the datafolder/file to the installer. Should I use autotools
> instead? I haven't looked into eggs yet would that be a better choice? The
> data file is something that is necessary for the program (it reads it and
> prints out a random line--the whole idea of the script)if that's all I
> wanted it to do I wouldn't have any problems--I could even include it as a
> list in the script file, but I would like the user to be able to add other
> data. 

Don't use "setup.py install" to install that directory. Imagine a case where the 
root user installs the package for everyone on the system to use. How do the 
multiple users get ~/.script/?

Instead, include the default data inside the package (read-only to non-root 
users). Then allow the script itself to create the directory the first time it 
is run (read-write, and it should then automatically be accessible to the user 
that ran the script). You might also add a command-line option to *only* install 
that directory.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From duncan.booth at invalid.invalid  Tue Sep 26 03:00:10 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 07:00:10 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<efa560$lgf$3@lust.ihug.co.nz>
Message-ID: <Xns984A4F2522204duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> In message <Xns984996E6BABCEduncanbooth at 127.0.0.1>, Duncan Booth
> wrote: 
> 
>> If I have a unicode string such as: u'\u201d' (right double quote),
>> then I want that encoded in my html as '&#8221;' (or &rdquo; but the
>> numeric form is better).
> 
> Right-double-quote is not an HTML special, so there's no need to quote
> it. I'm only concerned here with characters that have special meanings
> in HTML markup.

There is no need to quote " or ' either except in particular situations.

Would you care to suggest how you get a right double quote into any iso-
8859-1 encoded web page without quoting it? Even if the page is utf-8 
encoded quoting it can be a good idea.

> 
>> There should be a one-stop shop where I can take my unicode text and
>> convert it into something I can safely insert into a generated html
>> page; at present I need to call both cgi.escape and s.encode to get
>> the desired effect.
> 
> What you're really asking for is a version of cgi.escape that a) fixes
> the bugs discussed in this thread, and b) copes with different
> encodings while doing so.
> 
> To handle b), you would need to pass it some indication of what the
> encoding of the string is. In any case, converting a literal
> right-double-quote to &#8221; is not relevant to the purpose of
> cgi.escape. 
> 
You don't seem to understand about html entity escapes. &#8221; is a valid 
way to express right double quote whatever the page encoding. There is no 
need to know the encoding of the page in order to escape entities, just 
escape anything which can be problematic.


From gdamjan at gmail.com  Mon Sep 11 20:02:39 2006
From: gdamjan at gmail.com (Damjan)
Date: Tue, 12 Sep 2006 02:02:39 +0200
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
Message-ID: <4505f897$0$75041$14726298@news.sunsite.dk>

>> But basically, you aren't providing a CGI environment, and that's why
>> cgi.parse() isn't working.
> 
> Clearly.  So what should I be doing? 

Probably you'll need to read the source of cgi.parse_qs (like Steve did) and
see what it needs from os.environ and then provide that (either in
os.environ or in a custom environ dictionary).

BUT why don't you use WSGI?

-- 
damjan


From sjmachin at lexicon.net  Thu Sep 14 02:38:54 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 23:38:54 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <1158212423.601263.122640@p79g2000cwp.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
Message-ID: <1158215934.183531.7270@e3g2000cwe.googlegroups.com>


Michael top-posted [again]:
>
> John Machin wrote:
> > Michael top-posted [corrected]:
> > > John Machin wrote:
> > > > Michael wrote:
> > > > > Hi All,
> > > > >
> > > > > I've received (via UDP) a null terminated string and need to convert it
> > > > > into a Python string. Can anyone tell me how this is done? If it helps,
> > > > > I know the number of characters in the string.
> > > > >
> > > >
> > > > I think you mean NUL, not null.
> > > >
> > > > What have you received it into, if it's not a Python string?
> > > >
> > > > You probably need/want this:
> > > >
> > > > if strg[-1] == "\0":
> > > >     strg = strg[:-1]
> > > > alternatively:
> > > > strg = strg.rstrip("\0") # requires Python 2.2.2 or later
> > > >
> > > > It's possible you may be talking about a fixed length string which
> > > > contains useful_stuff + "\0" + padding -- in that case you need
> > > >
> > > > strg = strg.split("\0")[0] # grab upto (but not including) the first
> > > > NUL (if any)
> > > >
> > > > If you're not sure what you've got, print repr(the_input_string)
> > > >
> > > > HTH,
> > > > John
> > > Thank you very much for your responses. To answer some of the
> > > questions... Yes, I am in Python receiving a C language 0 terminated
> > > string that was sent to my Python program in a UDP packet (which is how
> > > I know the count). Are your responses still correct given this
> > > clarification?
> >
> > My responses are correct. Your "clarification" indicates to me that you
> > are going by what you are told, not by inspection of (several instances
> > of) the packet contents, using repr(). It's up to you whether you want
> > to be skeptical about the packet contents or not. I certainly wouldn't
> > be throwing the last byte away without checking that it was in fact a
> > NUL.
> >
> > Cheers,
> > John
> John,
>
> Thanks for your reply. Just wondering... how are Python strings
> formatted? Evidently they're not 0 terminated.

A Python string is an object. The details of the internal storage may
vary between implementations. CPython  has 8-bit str objects and 16-bit
or 32-bit Unicode objects. In IronPython, (str is Unicode) is true, and
they are 16 bits. In any case the object knows its own length without
having to scan for a terminator. Thus, a string can contain NULs.

Having said all that, the CPython str implementation does have an
additional byte at the end; this is set to zero and is not counted in
the length. However you never see that and don't really need to know
unless you are writing an extension module in C -- it's handy to know
that you don't have to append a NUL if you want to call a C library
function.

Cheers,
John



From goonmail at netspace.net.au  Sat Sep 23 23:54:07 2006
From: goonmail at netspace.net.au (goonmail at netspace.net.au)
Date: 23 Sep 2006 20:54:07 -0700
Subject: Help
In-Reply-To: <mailman.498.1159035548.10491.python-list@python.org>
References: <mailman.498.1159035548.10491.python-list@python.org>
Message-ID: <1159070047.596449.296890@i3g2000cwc.googlegroups.com>

wesley chun wrote:
> > From: "Rrajal" <rrajal at gmail.com>
> > Date: Mon, Sep 18 2006 9:50 am
> > Subject: Re: Help
> > Groups: comp.lang.python
> >
> > Hi there, I am new in this subject so could you please tell
> > me from  where I can get help (or good e-book) of python?


Don't forget *the Python tutorial* found at

    <http://docs.python.org/tut/tut.html>

This tutorial is the first and best. It doesn't cost anything and is
always the most up to date and correct.

Regs PR



From tim at tdw.net  Tue Sep 26 08:37:44 2006
From: tim at tdw.net (Tim Williams)
Date: Tue, 26 Sep 2006 13:37:44 +0100
Subject: concat next line with previous
In-Reply-To: <W53364392.803.11235.1@mx-extra>
References: <W53364392.803.11235.1@mx-extra>
Message-ID: <9afea2ac0609260537q211f72c3j9c1bd380bf8140f7@mail.gmail.com>

On 26 Sep 2006 03:16:25 -0700, s99999999s2003 at yahoo.com
<s99999999s2003 at yahoo.com> wrote:
> hi
> what is the python way to concat 2 lines eg
>
> line  1 with some text
> line 2 with some text
>
> i want to bring line 2 up , such that i get one whole string.
>
> line  1 with some text line 2 with some text
>

also

line3 = "%s %s" % (line1, line2)


From iker.arizmendi at gmail.com  Tue Sep 26 22:00:59 2006
From: iker.arizmendi at gmail.com (iker.arizmendi at gmail.com)
Date: 26 Sep 2006 19:00:59 -0700
Subject: releasing memory to malloc
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
	<1159319835.249502.65220@i3g2000cwc.googlegroups.com>
	<1159321405.372826.60130@k70g2000cwa.googlegroups.com>
Message-ID: <1159322459.473038.233090@m7g2000cwm.googlegroups.com>

I happen to have the code for the C library in question, but I don't
think this is the way to go in general.  If there's a way to get Python
to give memory back to the C allocator I can avoid touching the
library at all.

Regards,
Iker

John Machin wrote:
> iker.arizmendi at gmail.com wrote:
> > I can, but the extension is only a thin wrapper around a general
> > purpose C library which is also used independently of Python.
> >
>
> So change the library to use xmalloc etc and add something like this to
> the .h file:
>
> #ifdef PYMEM
> #define xmalloc PyMem_Malloc
> etc
> #else
> #define xmalloc malloc
> etc
> #endif



From fuzzyman at gmail.com  Thu Sep 14 05:27:25 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 14 Sep 2006 02:27:25 -0700
Subject: lxml Windows binaries
In-Reply-To: <mailman.73.1158224324.10491.python-list@python.org>
References: <mailman.73.1158224324.10491.python-list@python.org>
Message-ID: <1158226045.776597.273060@e3g2000cwe.googlegroups.com>


Jan Dries wrote:
> I'm trying to find Windows binaries for lxml. The cheeseshop is supposed
> to have such binaries, but I can't find them.
> Does anyone know where I might find such binaries?
>

The lxml install docs point to the following link for Windows binaries
:

   http://www.zlatkovic.com/libxml.en.html

Which in turn points to :

    http://www.zlatkovic.com/pub/libxml/

The latest binaries on this page are from July.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> Thanks,
> Jan



From rshepard at appl-ecosys.com  Fri Sep 15 13:13:03 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Fri, 15 Sep 2006 10:13:03 -0700 (PDT)
Subject: Coding Nested Loops
In-Reply-To: <eeeluk$fqv$02$1@news.t-online.com>
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
Message-ID: <Pine.LNX.4.64.0609151010460.24702@salmo.appl-ecosys.com>

On Fri, 15 Sep 2006, Peter Otten wrote:

> It's not clear to me why you would use dictionaries, especially as they
> are unordered; I used lists instead:

Peter,

   Because the data comes via a serial port as sequences of two bytes from an
OMR reader, and the byte pairs need to be converted into values meaningful
to the application.

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Thu Sep 14 05:46:11 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Thu, 14 Sep 2006 11:46:11 +0200
Subject: Why not event-driven packages in other than the main thread?
References: <eeb6go$kfk$1@news.uit.no>
Message-ID: <4msmn3F7ni7iU1@individual.net>

Tor Erik wrote:

> But could anyone tell me why running these in a thread other than
> the main one doesn't work?

Just for personal interest: Why would you want to run the GUI in
another thread? It's common to leave the GUI in the main thread and
let worker threads handle heavy time-consuming stuff.

Regards,


Bj?rn

-- 
BOFH excuse #170:

popper unable to process jumbo kernel



From shalofin at gmail.com  Mon Sep 25 08:03:21 2006
From: shalofin at gmail.com (paw)
Date: 25 Sep 2006 05:03:21 -0700
Subject: Problems with Python 2.5 installer.
Message-ID: <1159185801.416379.280870@m7g2000cwm.googlegroups.com>

I have ran the MSI installer for Python 2.5 several times attempting to
install to C:
Python, however all of the files are placed in C:\ .  The installer is
told to only install files for me, beyond that I have only chosen the
defaults.

If I copy the files after installation, then uninstall Python, I can
still use the application.  However I am unable to install py2exe since
it does not see Python in the registry, py2exe refuses to install when
the Python files are in C:\ .

The system in am installing on is WinXP SP 2 and I have enough admin
rights on the machine to install software.

Google turned up nothing useful that I could find, is anyone else
seeing this problem?

Thanks,

Wayne



From hardcoded.software at gmail.com  Sat Sep  2 09:51:17 2006
From: hardcoded.software at gmail.com (Hardcoded Software)
Date: 2 Sep 2006 06:51:17 -0700
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
	<1157196121.086531.192240@b28g2000cwb.googlegroups.com>
Message-ID: <1157205077.750835.219490@m73g2000cwd.googlegroups.com>

Tal Einat wrote:
> Neil Cerutti wrote:
> > On 2006-09-01, Tal Einat <tal.no.no.spam at gmail.com> wrote:
> > > Tim Chase wrote:
> > >> I'm not sure if '__iter__' is the right thing to be looking
> > >> for, but it seems to work at least for lists, sets,
> > >> dictionarys (via their keys), etc.  I would use it because at
> > >> least then you know you can iterate over it
> > >
> > > AFAIK and as seen throughout posts on c.l.py, the best way to
> > > check if something is iterable is:
> > >
> > > try:
> > >     iter(obj)
> > > except TypeError:
> > >     <obj is not iterable>
> > > else:
> > >     <obj is iterable>
> >
> > That confounds me.  Of course, I'm coming from a C++, where you
> > never want to throw an exception in a common case, hence the name
> > 'exception'. The Python FAQ does say that raising and catching an
> > exception is an expensive operation. I see that type-checking is
> > good to avoid, but type-checking must be better than "abusing"
> > exceptions in this way. Is the above really a popular idiom?
> >
> > If so, I guess I'll get used to it.
> >
> Such use of exceptions is surely common enough in Python to be worth
> getting to know, if only in order to understand others' code.
>
> If you had wanted to check if an object was callable, which is a more
> basic functionality in Python, you would use Python's built-in function
> callable(). Unfortunately there is no such function as iterable().
> (perhaps there should be? ...)
>
> Raising an exception is a relatively "expensive" operation, but not so
> much that you would want to avoid it altogether... In most such cases,
> such as checking whether an object is iterable, speed isn't an issue.
>
> IMO this is far from "abuse". The iter() function's documenation
> explicitly notes "If it does not support either of those protocols,
> TypeError is raised." This can be viewed as one possible output of the
> function, in addition to the possibility of returning an iterator. In
> such a function, raising exceptions instead of returning None or other
> special values (often called "return codes") is much more modular, and
> IMO much more readable.
>
> - Tal

I agree. Code readability is much more important than code performance
(Well, in the Python realm.). A Python coder shouldn't care about
performance until he/she does a profiling and finds out a bottleneck.

Besides, I like my solution a little better :). When performing the
extend in the try, the extend will raise TypeError anyway. No need to
call iter(). It's what my Python in a nutshell book calls "It's easier
to ask forgiveness than permission" idiom, as opposed to the "Look
before you leap" idiom.



From rdsteph at mac.com  Mon Sep 25 08:28:10 2006
From: rdsteph at mac.com (rdsteph at mac.com)
Date: 25 Sep 2006 05:28:10 -0700
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <1159187290.052703.116370@i42g2000cwa.googlegroups.com>

Roy Smith wrote:

>
> Can anybody suggest some good material I can give to him which will help
> explain what Python is and why it's a good thing, in a way that a
> marketing/product management person will understand?

As a sometimes marketing droid on my day job (please don't tell
anyone!) I think you should point out that, while 5-10 years ago Perl
was more popular and widely used than Python, Python has been growing
at a much higher rate, and by many (most?) measurements, Python is now
more widely used than Perl for many types of applications.

These measurements are not precise, but all of the below show Python
catching or surpassing Perl today:

1. Number of newsgroup postings
2. Number of books published and sold
3. Number of universities offering courses
4. Number of commerical training courses and seminars offered
5. Number of job listings on internet job listing boards.

With Python, it's all about growth; the growth rate of Python, by any
of the measurements above and others too numerous to mention, is far
greater than Perl's growth rate. Any marketing droid worth his salt
should be impressed with high growth rates persisting over several
years. ;-))

Ron Stephens
www.awaretek.com/plf.html



From bj_666 at gmx.net  Fri Sep 15 03:51:11 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 15 Sep 2006 09:51:11 +0200
Subject: Check if variable is an instance of a File object
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
Message-ID: <pan.2006.09.15.07.51.10.187745@gmx.net>

In <1158304694.673361.62600 at b28g2000cwb.googlegroups.com>, sc_wizard29
wrote:

> Maybe these questions will sound strange to you, but I sometime have a
> hard time switching from Java to Python ;-)
> 
> Let's say I have a function like this :
> 
> def show_lines(file):
> 	for next_line in file:
> 		...
> 
> What can I do to be sure that the input argument is indeed a 'File'
> object ?

Why do you want to be sure?  I would even rename the argument:

def show_lines(lines):
    for line in lines:
        ...

This works with *every* iterable that contains "lines".  No need to
"cripple" it with a type checking.

> #2 : should I do nothing ? (but I don't like the idea of risking to
> have a runtime exception raised somewhere)

Then don't use Python.  Except `SyntaxError` almost every
exception is a runtime one.

And what do you do if you check for `file` and it isn't such an instance? 
Raise an exception?  A no, that's something you don't like.  So what else?  ;-)

Ciao,
	Marc 'BlackJack' Rintsch


From bignose+hates-spam at benfinney.id.au  Thu Sep 28 20:12:32 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 29 Sep 2006 10:12:32 +1000
Subject: ANN: CherryPy 3.0.0 beta 2
References: <d66b7a7f0609280843v6a208681p41f9737fdd92399e__31319.4513008513$1159458444$gmane$org@mail.gmail.com>
	<87irj7k3w9.fsf@benfinney.id.au>
Message-ID: <87ejtvjztb.fsf@benfinney.id.au>

Ben Finney <bignose+hates-spam at benfinney.id.au> writes:

> Please don't post HTML message bodies to a public mailing list.

My apologies; this was sent as a reply direct to the sender of the
release announcement. I've no idea how it ended up here.

-- 
 \          "The WWW is exciting because Microsoft doesn't own it, and |
  `\              therefore, there's a tremendous amount of innovation |
_o__)                                       happening."  -- Steve Jobs |
Ben Finney



From avelldiroll at yahoo.fr  Fri Sep  1 08:40:03 2006
From: avelldiroll at yahoo.fr (Avell Diroll)
Date: Fri, 01 Sep 2006 14:40:03 +0200
Subject: dictionaries - returning a key from a value
In-Reply-To: <002101c6cdba$f37c2b50$a8e7ca2b@guerrillagames.com>
References: <002101c6cdba$f37c2b50$a8e7ca2b@guerrillagames.com>
Message-ID: <44F82A23.9000802@yahoo.fr>

Michael Malinowski wrote:
(snip)
> However, I am curious to know if its possible to get the key from giving
> a value (basically the opposite of what I did above, instead of getting
> a value from a key, I want the key from a value). Is there a way of
> doing this? Or would I need to cycle all the keys until I hit a value
> match (which seems somewhat cumbersome).
(snip)

I believe you need to cycle through the entire dict (but that's what a
dict.<method> would do ... wouldn't it?) ... but it is really quickly
done using list comprehension (in Ipython shell here):

In [30]: sampledict={'the Holy Grail':'1975', 'Life of Brian':'1979',
'Party Political Broadcast':'1974','Mr. Neutron':'1974',
'Hamlet':'1974', 'Light Entertainment War':'1974'}

In [31]: sampledict Out[31]:
{'Hamlet': '1974',
 'Life of Brian': '1979',
 'Light Entertainment War': '1974',
 'Mr. Neutron': '1974',
 'Party Political Broadcast': '1974',
 'the Holy Grail': '1975'}

In [32]: sampledict.get('the Holy Grail') Out[32]: '1975'

In [33]: sampledict['Mr. Neutron'] Out[33]: '1974'

In [34]: keys = [key for key in sampledict if sampledict[key] == '1974']
In [35]: keys
Out[35]:
['Mr. Neutron',
 'Hamlet',
 'Party Political Broadcast',
 'Light Entertainment War']




HIH

Avell



From sjdevnull at yahoo.com  Fri Sep  1 01:46:44 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 31 Aug 2006 22:46:44 -0700
Subject: Allowing ref counting to close file items bad style?
In-Reply-To: <BzKJg.4809$8Q6.740@trndny01>
References: <9U6Jg.951$Xw6.283@trndny02>
	<mailman.10163.1157012720.27775.python-list@python.org>
	<BzKJg.4809$8Q6.740@trndny01>
Message-ID: <1157089604.283090.67400@i3g2000cwc.googlegroups.com>

Dan wrote:
> BJo:rn Lindqvist wrote:
> > On 8/30/06, Dan <bounces at foo.org> wrote:
> >> Is my data safer if I explicitly close, like this?:
> >>      fileptr = open("the.file", "w")
> >>      foo_obj.write(fileptr)
> >>      fileptr.close()
> > Have you ever experienced a problem caused by not explicitly closing
> > your file handles?
>
> No.  If I had, I wouldn't have asked the question.  It seems to work,
> but can I really count on it?

In CPython, you can rely on file objects to be closed when the last
reference to them is removed.  In general, the language spec does not
guarantee that so if you use Jython or other implementations you cannot
rely on files being closed on last reference.  (see my other posts in
this thread for why I think the language spec should be changed to
guarantee the ref-counting semantics at least in simple cases).



From andychambers2002 at yahoo.co.uk  Mon Sep 25 06:10:15 2006
From: andychambers2002 at yahoo.co.uk (andychambers2002 at yahoo.co.uk)
Date: 25 Sep 2006 03:10:15 -0700
Subject: PyOpenGL pour python 2.5 ???
In-Reply-To: <1159178528.207890.242410@i42g2000cwa.googlegroups.com>
References: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>
	<4517A3E6.20106@xiludom.gro>
	<1159178528.207890.242410@i42g2000cwa.googlegroups.com>
Message-ID: <1159179015.276448.4530@e3g2000cwe.googlegroups.com>


S?bastien Ramage wrote:
> oh!
> sorry, I made some search on comp.lang.python and fr.comp.lang.python
> and finally I forgot where I was...
>
> My question is :
> how use pyopengl with python 2.5 ??
> it seems that pyopengl was stop on 2005

Have a look at this thread.  I think with pyopengl you'll have to get
the source and compile to get it to work on Python 2.5.  I'd be
surprised if development of this package has stopped completely though.
 If you give them some time, they will come up with a 2.5 release soon
enough.

http://groups.google.com/group/comp.lang.python/browse_thread/thread/4d100920de4f271a/09216ab1c36cf898?lnk=gst&q=upgrade+package+to+2.5&rnum=1#09216ab1c36cf898

Regards,
Andy



From exarkun at divmod.com  Fri Sep  8 09:15:53 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Fri, 8 Sep 2006 09:15:53 -0400
Subject: A static pychecker?
In-Reply-To: <OPdMg.1076$fK7.563@newsfe03.lga>
Message-ID: <20060908131553.1717.249024023.divmod.quotient.42879@ohm>

On Fri, 8 Sep 2006 08:00:25 -0500, "Edward K. Ream" <edreamleo at charter.net> wrote:
>I am wondering whether anyone knows of a static source-code analyzer for
>Python, kinda like a static pychecker.
>
>That is, instead of being a run-time tool as pychecker is, it would be a
>'compile-time' tool.  If I were writing such a thing it would use the ast
>returned from compiler.parse.  Unlike the inspect module, it would peruse
>the code looking for possible problems.
>

pyflakes is this.  It looks for significantly fewer problems than pychecker,
but it doesn't require modules to be importable to examine them and it is
significantly faster.

Jean-Paul


From faulkner612 at comcast.net  Mon Sep 25 20:45:21 2006
From: faulkner612 at comcast.net (faulkner)
Date: 25 Sep 2006 17:45:21 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159230645.917779.319770@m73g2000cwd.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159230645.917779.319770@m73g2000cwd.googlegroups.com>
Message-ID: <1159231520.965115.298520@b28g2000cwb.googlegroups.com>

where do you find these "contract jobs", if you don't mind my asking?

Christian wrote:
> walterbyrd wrote:
> > If so, I doubt there are many.
> >
> > I wonder why that is?
>
> Previously I used Python while earning a living working in IT at a
> college.  Currently it is putting food on the table via contract jobs.
> I imagine there are "many" out there like me, doing just that.
> 
> Christian
> http://www.dowski.com



From webraviteja at gmail.com  Thu Sep 21 23:44:46 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 21 Sep 2006 20:44:46 -0700
Subject: Writing Video conference software for Windows
In-Reply-To: <mailman.265.1158667756.10491.python-list@python.org>
References: <mailman.265.1158667756.10491.python-list@python.org>
Message-ID: <1158896686.543022.286760@i42g2000cwa.googlegroups.com>

> I need to write a software that allow to see the desktop

That would be the VNC protocol. Don't reinvent the wheel.

VNC is relatively efficient in that it only updates the portions of the
screen that changed.

Maybe this project could be your starting point.
PyVNC
http://bdash.net.nz/blog/2005/07/17/pyvnc-the-beginnings-of-a-python-vnc-client/

> and hear the
> microphone capture of a remote PC across a network.
> I need to do that
> for a unviresity assignement. The software must  run on Windows. Since
> I like Python very much I am thinking to write that software in
> Python. Do you thinkit is a good choice? Are there libraries for audio
> compression (OGG or MP3 or maybe GSM or something like realaudio)

PyMedia can record and it works for mp3 and oggs.

> and video compression (btw what can be some good libraries to transmit
> images of a desktop in a bandwidth-efficent way?).

See above. You can lossy compress images in VNC.

> (Probably i will need some Win32 system call,
> there are bindings in Python, aren't they?)

The above modules should take care of everything. BTW, PIL can take
screen shots if you want to do this manually.

You need to create a streaming server for audio. Take a look at Edna, a
streaming MP3 server. http://edna.sourceforge.net/

Also of interest ... Twisted and Shtoom.

And finally... since you are on Windows - you can just try using the
NetMeeting ActiveX control through Python. It already does everything
you want.

Disclaimer: While I tinkered with many of the above, I have not used
most of the above projects recently. These are just leads for you to
explore.



From maric at aristote.info  Fri Sep  8 05:42:20 2006
From: maric at aristote.info (Maric Michaud)
Date: Fri, 8 Sep 2006 11:42:20 +0200
Subject: change property after inheritance
In-Reply-To: <6YSdneDAk40_gp3YnZ2dnUVZ_qqdnZ2d@comcast.com>
References: <V_ALg.10274$YZ3.7565@trnddc03> <NcLLg.27806$CL6.8934@trnddc06>
	<6YSdneDAk40_gp3YnZ2dnUVZ_qqdnZ2d@comcast.com>
Message-ID: <200609081142.22190.maric@aristote.info>

Le jeudi 07 septembre 2006 15:33, Steven Bethard a ?crit?:
> Well, lambda's not going away[1],

Sure, they won't.

> but there's no *need* for lambda here. 
> ? It could be written as::

Le jeudi 07 septembre 2006 17:16, George Sakkis a ?crit :
> Sure, it *could*; whether it *should* is a different issue. I can't
> imagine a case for absolute *need* of lambda, but there are several
> cases where it is probably the best way, such as the one of this
> thread.

I have no preferences here, I used lambdas because it's more compact but they 
have also their drawback, when the function get a little more complex the 
code is quickly confusing. The main advantage of the lambdas in this case is 
to not pollute the class namespace.

Le jeudi 07 septembre 2006 23:48, Steven Bethard a ?crit :
>  Try using one of the following recipies:
>
>      http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/408713
>      http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/442418

The code i wrote was to demonstrate late binding is usually not needed (and 
it's not the semantic of properties so it's a bit like "make Java in 
Python").
Only the second recipe has to do with it, but is not clean IMHO, it's 
unnecessary complicated and it introduce a extra level of indentation which 
is rather confusing, the 'self' variable in accessors is not what it seems to 
be. Moreover, it introduce a new semantic for a functionality which is 
already part of the language, what's the goal ? To lost python developers 
reading your code ?

If you really want late binding, the first recipe may be a solution, but it 
should be both simpler and should not introduce a new semantic (the functions 
passed as strings is disappointing).
I'd write it like this :

class LateBindingProperty(property) :
    __doc__ = property.__dict__['__doc__'] # see bug #576990

    def __init__(self, fget=None, fset=None, fdel=None, doc=None) :
        if fget : fget = lambda s, n=fget.__name__ : getattr(s, n)()
        if fset : fset = lambda s, v, n=fset.__name__ : getattr(s, n)(v)
        if fdel : fdel = lambda s, n=fdel.__name__ : getattr(s, n)()
        property.__init__(self, fget, fset, fdel, doc)




In [4]: class A(object) :
   ...:     def getx(self) : return self._x
   ...:     def setx(self, v) : self._x = v
   ...:     p=LateBindingProperty(getx, setx)
   ...:
   ...:

In [5]: class B(A) :
   ...:     def setx(self, v) : A.setx(self, 2*v)
   ...:
   ...:

In [8]: a=A()

In [9]: a.p = 5

In [10]: a.p
Out[10]: 5

In [11]: a._x
Out[11]: 5

In [12]: b=B()

In [13]: b.p=5

In [14]: b.p
Out[14]: 10

-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From george.sakkis at gmail.com  Sun Sep 10 10:37:10 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 10 Sep 2006 07:37:10 -0700
Subject: Function metadata (like Java annotations) in Python
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
	<1157879609.386406.278450@b28g2000cwb.googlegroups.com>
	<1157893527.335185.216650@e3g2000cwe.googlegroups.com>
Message-ID: <1157899030.755825.134550@i3g2000cwc.googlegroups.com>

oripel wrote:
> Thanks Paddy - you're showing normal use of function attributes.
> They're still hidden when wrapped by an uncooperative decorator.

The decorator module may be helpful in defining cooperative decorators:
http://www.phyast.pitt.edu/~micheles/python/documentation.html

George



From slowness.chen at gmail.com  Thu Sep  7 20:47:20 2006
From: slowness.chen at gmail.com (Slowness Chen)
Date: 7 Sep 2006 17:47:20 -0700
Subject: the same strings, different utf-8 repr values?
In-Reply-To: <1157651586.268521.130450@i3g2000cwc.googlegroups.com>
References: <1157642083.249352.159080@m73g2000cwd.googlegroups.com>
	<1157651586.268521.130450@i3g2000cwc.googlegroups.com>
Message-ID: <1157676440.355228.63740@d34g2000cwd.googlegroups.com>

got it. thanks.
John Machin ???

> slowness.chen at gmail.com wrote:
> > I have two files:
> >
> > test.py:
> > --------------------------------------------------
> > # -*- encoding : utf8 -*-
> > print 'in this file', repr('??')
> >
> > # tt.txt is saved as utf8 encoding
> > f = file('tt.txt')
> > line1 = f.readline().strip()
> > print 'another file', repr(line1)
> > -------------------------------------------------------
> >
> > tt.txt:
> > ----------------------------------------------------
> > ??
> > test
> > -------------------------------------------------------
> > run test.py and I get the following output:
> > in this file '\xe4\xb8\xad\xe6\x96\x87'
> > another file '\xef\xbb\xbf\xe4\xb8\xad\xe6\x96\x87'
> >
> > and I cann't encode line1 like:
> >        line1.decode('utf8').encode('gbk')
> > get this error:
> > UnicodeEncodeError: 'gbk' codec can't encode character u'\ufeff' in
> > position 0:
> > illegal multibyte sequence
> >
> > why did I get the different repr values?
>
> Because whatever you used to "save as" that file has retained or
> inserted a BOM (byte order mark, U+FEFF) at the start of the file
> before encoding as UTF-8. It's the '\xef\xbb\xbf' at the start of the
> file, and also the u'\ufeff' that is giving the gbk codec indigestion.
> You can remove it in your script.
> 
> HTH
> John



From melih.onvural at gmail.com  Wed Sep 27 00:21:36 2006
From: melih.onvural at gmail.com (Melih Onvural)
Date: 26 Sep 2006 21:21:36 -0700
Subject: problem moving from char to integer
In-Reply-To: <1159315518.595110.266760@m7g2000cwm.googlegroups.com>
References: <1159312523.880618.316150@m7g2000cwm.googlegroups.com>
	<pan.2006.09.26.23.19.22.800843@users.sf.net>
	<1159313008.738945.127950@i42g2000cwa.googlegroups.com>
	<1159315518.595110.266760@m7g2000cwm.googlegroups.com>
Message-ID: <1159330896.088469.275380@m7g2000cwm.googlegroups.com>

I'm trying to calculate the checksum of a website so that I can get its
PageRank. I'm modifying the code that I found here:
http://blog.outer-court.com/archive/2004_06_27_index.html#108834386239051706

I apologize for being secretive, but I didn't mean to be. I'm trying to
take characters and push them to their integer value. Thanks for the
help and the advice on writing in Python. Definitely learning to do
things right is the goal here.

Also, the ord function worked. Thanks.

Melih

John Machin wrote:
> Melih Onvural wrote:
> > This is the error message that I'm having a tough time interpreting:
> > Traceback (most recent call last):
> >   File "pagerank.py", line 101, in ?
> >     main()
> >   File "pagerank.py", line 96, in main
> >     ch = strord(url)
> >   File "pagerank.py", line 81, in strord
> >     result[counter] = int(i);
> > ValueError: invalid literal for int(): i
> >
> > and here is the full code:
> >
> > def strord(url):
> >     counter=0;
> >     for i in url:
> >        result[counter] = int(i);
> >        counter += 1;
> >
> >     return result;
>
> You are getting this error because you are trying to convert string to
> integer, but this of course complains if it finds unexpected
> non-digits.
> int('9') -> 9
> int('x') -> this error
> You may be looking for the ord() function:
> ord('9') -> 57
> ord('x') -> 120
>
> In any case, once you've sorted that out, your function will die in the
> same statement, because "result" isn't defined. Python isn't awk :-)
>
> Given the name of your function (strord), perhaps what you really want
> is this:
>
> def strord(any_string):
>     return [ord(x) for x in any_string]
>
> but why you'd want that (unless you were trying to pretend that Python
> is C), I'm having a little troubling imagining ...
>
> Perhaps if you told us what you are really trying to do, we could help
> you a little better.
> 
> HTH,
> John



From apardon at forel.vub.ac.be  Wed Sep 27 10:14:07 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 27 Sep 2006 14:14:07 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<E8vSg.384$5o5.203@tornado.texas.rr.com>
Message-ID: <slrnehl1pf.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-27, Paul McGuire <ptmcg at austin.rr._bogus_.com> wrote:
> "Antoon Pardon" <apardon at forel.vub.ac.be> wrote in message 
> news:slrnehkqqc.rcu.apardon at rcpc42.vub.ac.be...
>> On 2006-09-27, Peter Otten <__peter__ at web.de> wrote:
>>> Antoon Pardon wrote:
>>>
>>>> I had written my own module, which works similarly but
>>>> is somewhat extended. Here is an example of how it can
>>>> be used and how I would like to use it but get stuck.
>>>>
>>>> from extreme import Top
>>>>>>> Top
>>>> Top
>>>>>>> Top + 1
>>>> Top
>>>>>>> Top - 30
>>>> Top
>>>>>>> Top > 1e99
>>>> True
>>>>>>> lst = range(10)
>>>>>>> lst[:Top]
>>>> Traceback (most recent call last):
>>>>   File "<stdin>", line 1, in ?
>>>> TypeError: slice indices must be integers or None
>>>>
>
> Here's a little more refined version of my previous post:
>
> class StubbornInt(int):
>     def invariantOp(self,other):
>         return self
>     __add__ = invariantOp
>     __sub__ = invariantOp
>     __mul__ = invariantOp
>     __div__ = invariantOp
>     __iadd__ = invariantOp
>     __isub__ = invariantOp
>     __imul__ = invariantOp
>     __idiv__ = invariantOp
>     __radd__ = invariantOp
>     __rsub__ = invariantOp
>     __rmul__ = invariantOp
>     __rdiv__ = invariantOp
>     def __str__(self):
>         return self.name
>
> import sys
> Top = StubbornInt(sys.maxint)
> Top.name = "Top"
> Bottom = StubbornInt(-sys.maxint-1)
> Bottom.name = "Bottom"

Well one problem I have with your solution is the following:

  >>> for x in xrange(sys.maxint - 2, Top):
  ...   print x
  ... 
  2147483645
  2147483646
  >>> 

The idea with a Top (and Bottom) variable is that you once and for
all have a value that is bigger (smaller) than any other value you are
going to use. AFAICS using a subclass of int will always
leave an opportunity open where an other value will be treated
as bigger (smaller), because functions like xrange will just
look at the int value of the object.

-- 
Antoon Pardon


From joshbloom at gmail.com  Fri Sep 22 19:07:31 2006
From: joshbloom at gmail.com (joshbloom at gmail.com)
Date: 22 Sep 2006 16:07:31 -0700
Subject: python-Levenshtein-0.10.1
In-Reply-To: <mailman.484.1158964976.10491.python-list@python.org>
References: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
	<mailman.484.1158964976.10491.python-list@python.org>
Message-ID: <1158966451.611343.228340@d34g2000cwd.googlegroups.com>

Thanks for the help guys!



From ldo at geek-central.gen.new_zealand  Tue Sep 26 21:45:20 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 13:45:20 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org><4517e10e$0$13929$edfadb0f@dread15.news.tele.dk><mailman.570.1159194107.10491.python-list@python.org>
	<efa7ff$pr2$2@lust.ihug.co.nz>
	<mailman.674.1159276196.10491.python-list@python.org>
Message-ID: <efcl1m$9a2$1@lust.ihug.co.nz>

In message <mailman.674.1159276196.10491.python-list at python.org>, Fredrik
Lundh wrote:

> most HTML attributes cannot even contain things that would need
> to be escaped ...

sys.stdout.write \
  (
        "Email: <INPUT TYPE=\"TEXT\" NAME=\"email_address\" VALUE=\"%s\">\n"
    %
        QuoteHTML(WhateverTheUserPreviouslyTyped)
  )


From bradfordh at gmail.com  Thu Sep  7 15:00:47 2006
From: bradfordh at gmail.com (Tempo)
Date: 7 Sep 2006 12:00:47 -0700
Subject: Extracting text from a string
In-Reply-To: <edpq1n$64u$1@newsreader2.netcologne.de>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
	<edpou4$41s$1@newsreader2.netcologne.de>
	<1157654883.477932.142850@p79g2000cwp.googlegroups.com>
	<edpq1n$64u$1@newsreader2.netcologne.de>
Message-ID: <1157655647.414091.249170@i3g2000cwc.googlegroups.com>

This is the output I get:



>>> prices
[<span class="sale">
					$14.99
				</span>, <span class="sale">
					$27.99
				</span>, <span class="sale">
					$66.99
				</span>, <span class="sale">
					$129.99
				</span>, <span class="sale">
					$254.99
				</span>]
>>>



From ldo at geek-central.gen.new_zealand  Fri Sep 29 03:52:28 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 19:52:28 +1200
Subject: How to find number of characters in a unicode string?
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
	<pan.2006.09.18.20.29.20.510034@gmx.net>
Message-ID: <efija1$357$1@lust.ihug.co.nz>

In message <pan.2006.09.18.20.29.20.510034 at gmx.net>, Marc 'BlackJack'
Rintsch wrote:

> In <20060918221814.08625ea2.randhol+valid_for_reply_from_news at pvv.org>,
> Preben Randhol wrote:
> 
>> Is there a way to calculate in characters
>> and not in bytes to represent the characters.
> 
> Decode the byte string and use `len()` on the unicode string.

Hmmm, for some reason

    len(u"C\u0327")

returns 2.


From fredrik at pythonware.com  Tue Sep 12 10:17:26 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 16:17:26 +0200
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <df2316bd0609120642t55d20944n7a88d677421befd3@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>	<mailman.302.1158018336.5279.python-list@python.org>	<1158045341.284783.321210@h48g2000cwc.googlegroups.com>
	<df2316bd0609120642t55d20944n7a88d677421befd3@mail.gmail.com>
Message-ID: <ee6fhm$98e$1@sea.gmane.org>

Mike Owens wrote:

> The bottom line: to use *any* database effectively, big or small, one
> has to read its documentation, not the SQL standard.

note that the SQL standard tells you to read the documentation for the 
database you're using, in at least 149 places (*).

</F>

*) See Annex B.  I only have a draft edition; the number of items in the 
final version may differ.



From antroy at gmail.com  Fri Sep  8 10:44:12 2006
From: antroy at gmail.com (Ant)
Date: 8 Sep 2006 07:44:12 -0700
Subject: Negation in regular expressions
In-Reply-To: <1157725755.940440.51040@p79g2000cwp.googlegroups.com>
References: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
	<1157688095.796720.270380@m73g2000cwd.googlegroups.com>
	<1157725755.940440.51040@p79g2000cwp.googlegroups.com>
Message-ID: <1157726652.552840.46710@h48g2000cwc.googlegroups.com>

> >>> re.split(r'@#', s)
> ['', ' This ', ' is a ', '', ' test ']
> >>> [g.group(1) for g in re.finditer(r'(.*?)(?:@#|$)', s)]
> ['', ' This ', ' is a ', '', ' test ', '']

If it's duplicating the behaviour of split, but returning an iterator
instead, how about avoiding hacking around with messy regexes and use
something like the following generator:

def splititer(pattern, string):
    posn = 0
    while True:
      m = pattern.search(string, posn)
      if not m:
        break
      yield string[posn:m.start()]
      posn = m.end()



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 05:43:12 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 11:43:12 +0200
Subject: no-installation version of python
References: <1158956102.512459.97980@i42g2000cwa.googlegroups.com>
	<4niv8hFan2s7U1@individual.net>
	<mailman.483.1158961991.10491.python-list@python.org>
Message-ID: <4nkdtgFaj5doU3@individual.net>

Robert Kern wrote:

> I think he wants a no-install (or, perhaps more accurately,
> simply-unzip-to-install) version of the interpreter that doesn't 
> need to touch the Windows registry or copy DLLs to system
> locations. py2exe builds such a thing (or nearly so) for the
> application itself, if it works.

Ah, I understand. Thx.

Regards,


Bj?rn

-- 
BOFH excuse #446:

Mailer-daemon is busy burning your message in hell.



From johnjsal at NOSPAMgmail.com  Wed Sep 20 10:23:48 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 20 Sep 2006 14:23:48 GMT
Subject: pprint: "...thank small children who sleep at night."
In-Reply-To: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
References: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
Message-ID: <U9cQg.12$1n3.186@news.tufts.edu>

Brian L. Troutwine wrote:

> thank small children who sleep at night.

That seems like the kind of sentence that could become a tagline or 
something, and you just have to be in the know to understand where it 
comes from.  :)


From heikki at osafoundation.org  Wed Sep 20 22:32:57 2006
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Wed, 20 Sep 2006 19:32:57 -0700
Subject: How to measure memory footprint of Python objects?
In-Reply-To: <mailman.327.1158753978.10491.python-list@python.org>
References: <mailman.327.1158753978.10491.python-list@python.org>
Message-ID: <TP2dnTY1e7dlZIzYnZ2dnUVZ_sednZ2d@comcast.com>

Neagu, Adrian wrote:
> I try to solve the following problem: I have a python program that takes a
> lot of memory (>hundred Mb). I made an improvement (I hope) and I want to
> measure the gain (if possible on several platforms). I would like to be able
> to print the max memory taken during the run upon exiting my Python program
> (like I already do for the time taken to run).

You could try PySizer: http://pysizer.8325.org/

-- 
  Heikki Toivonen


From steve at holdenweb.com  Sat Sep  9 07:26:38 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 09 Sep 2006 12:26:38 +0100
Subject: convert loop to list comprehension
In-Reply-To: <1157768144.939694.81730@b28g2000cwb.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>	<7xvenxx4j3.fsf@ruckus.brouhaha.com>	<1157762409.805195.231770@m73g2000cwd.googlegroups.com>	<1157767525.761220.117190@d34g2000cwd.googlegroups.com>
	<1157768144.939694.81730@b28g2000cwb.googlegroups.com>
Message-ID: <edu8cb$gq2$4@sea.gmane.org>

bvdp at xplornet.com wrote:
> Carl Banks wrote:
> 
>>bvdp at xplornet.com wrote:
>>
>>>Paul Rubin wrote:
>>>
>>>>bearophileHUGS at lycos.com writes:
>>>>
>>>>>print sum( ([i]*n for i,n in enumerate(seq)), [])
>>>>
>>>>Wow, I had no idea you could do that.  After all the discussion about
>>>>summing strings, I'm astonished.
>>>
>>>Me too ... despite what bearophile said, this is faster than the 2nd
>>>example. Nearly as fast as the original loop :)
>>
>>See if it's still faster if the original sequence is length 1000.
>>(Hint: it won't be.)  Adding lists with sum has the same performance
>>drawback that adding strings does, so it should be avoided.
>>
>>sum is for adding numbers; please stick to using it that way.
>>
>>FWIW, the original loop looked perfectly fine and readable and I'd
>>suggest going with that over these hacked-up listcomp solutions.  Don't
>>use a listcomp just for the sake of using a listcomp.
> 
> 
> Thanks for that, Carl. I think that using the loop is probably what
> I'll end up doing. I had no idea that the listcomp thing would be quite
> a complicated as it is appearing. I had it in my mind that I was
> missing some obvious thing which would create a simple solution :)
> 
Your original solution was the simplest, in that it's easy to understand 
and maintain.

> Mind you, there are some interesting bits and pieces of code in this
> thread!
> 
Right. But Python in general is designed to encourage straightforward 
expression of straightforward ideas, while retaining the ability to 
solve complex problems in innovative ways.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From michaels at rd.bbc.co.uk  Thu Sep 14 08:06:12 2006
From: michaels at rd.bbc.co.uk (Michael Sparks)
Date: Thu, 14 Sep 2006 13:06:12 +0100
Subject: Invitation: Kamaelia Open Space, Brussels, Sept 22 2006
Message-ID: <450945cc$0$3598$ed2e19e4@ptn-nntp-reader04.plus.net>

Hello,


I'd like to invite you to our first Kamaelia Open Space event.

Our theme is "Making Software like Lego through intuitive useful
concurrency".

Perhaps you want to learn to use Kamaelia, or you're already using it,
or you're simply interested in code reuse or concurrency being actually
useful in everyday code rather than theory. If these match your interests,
please come along.

WHEN

The day after Euro OSCON, and just before Bar Camp Brussels:
   * Friday 22nd September 2006 - 11am - 5pm

WHERE
   * FOAM Offices, Brussels, Belgium
   * Koolmijnenkaai 30-34, 1080 Brussels, Belgium
   * http://fo.am/contact.html
   * http://tinyurl.com/hsarl (link showing location on multimap)

WHAT

http://kamaelia.sourceforge.net/Home

Kamaelia started as an applied research project, at BBC Research, and
has an underlying goal of making software systems easier to maintain
and create through the use of intuitive and safe concurrency, in the
form of components, whilst maintaining performance. It's being fleshed
out by creating systems useful in the real world.

This approach turns software into systems similar to a number of
systems people may be familiar with : Unix pipes (except non-linear
is practical), CSP, hardware (especially HDL's), Occam, K'nex and Lego.
Components send messages out via outboxes, receive messages on inbox,
have zero copy delivery and messages may be any python object including
a component.

Practical systems using Kamaelia developed to-date include time-shifting
digital TV and a variety of network systems, however components exist
simplifying the use of audio, video, pygame & Open GL.

PURPOSE

The purpose of the event is similar to a python sprint. Our aims for this
event are to spread what we've learnt with the wider community - for the
simple reason we're finding it works for us, and hope it does for you too.
This includes - but not exclusively:

   * To assist people to get started using Kamaelia :-)

   * Help you copy or tailor our approach to your systems.
     (eg making our system or approach usable in twisted).

   * To investigate areas where we can flesh Kamaelia out 
     (eg we have a webserver than can run in a similar manner to
     seaside, how would you like that fleshed out)

   * We'd like to assist others using other languages take the lessons
     we've learnt and apply them in their preferred language.
     (especially Ruby and C++)

   * Help attendees integrate their projects with Kamaelia encouraging
     reuse between projects, bosting the system for everyone
     (eg integrate pygtk, wxwidgets, pyqt, or other projects you may
     use or contribute to, building on experience from integrating tk,
     pygame and open gl)

   * To share the work done by students during Google's Summer of Code

   * How to apply this to teaching children to create these systems
     effectively. (We've noticed that pre-university users of Kamaelia tend
     to achieve the most using it)

   * Use of Kamaelia for art and entertainment 

At the other extreme, we could also like to use the time to share
information (if people are interested) on how some of the practical
systems we use work since they are likely to be useful to others.
Two interesting areas:

   * Distributed whiteboarding including audio. This is served in an
     effectively peer to peer manner - extending this to include grid
     setup (and/or DHT search) would be useful. This is potentially
     interesting beyond simple whiteboarding since this really forms a
     simple distributed events backplane

   * Practical flexible timeshifting either entire channels, and
     multiplexes or based on programme names

Nascent areas perhaps of interest which are include in Kamaelia include
a handwriting recogniser (currently at stroke/letter recognition level),
graphical systems creation, and a basic open GL toolkit.

FORMAT

The above list of suggestions for discussion is just that, suggestions.
The specific agenda for the event will be decided on the day by those
who attend.

Since much of what's to be discussed will be new, this will be a cross
between a python sprint and open space in format.

THANKS TO

Finally, many thanks to the very kind people at FOAM - http://fo.am/ for
hosting this event, it is very much appreciated.

WHAT NEXT

If you're interested in coming, please email your interest either to me at:
    michaelsparks at cerenity.org

Or to the kamaelia mailing list:
    kamaelia-list at lists.sourceforge.net

If you know someone who you think is interested in the theme, could
benefit from coming - for example someone interested in making practical
concurrency safer and easier to use in future - please don't hesitate
to forward this invitation to them.

Hope to see you there!


Michael
--
Michael Sparks, Senior Research Engineer, BBC Research, Technology Group
michael.sparks at bbc.co.uk, Kamaelia Project Lead, http://kamaelia.sf.net/

This message may contain personal views which are not the views of the BBC



From sjmachin at lexicon.net  Sat Sep  2 03:26:44 2006
From: sjmachin at lexicon.net (John Machin)
Date: 2 Sep 2006 00:26:44 -0700
Subject: Linear regression in 3 dimensions
In-Reply-To: <mailman.10278.1157180805.27775.python-list@python.org>
References: <mailman.10278.1157180805.27775.python-list@python.org>
Message-ID: <1157182003.920739.57190@m79g2000cwm.googlegroups.com>


wirecom at wirelessmeasurement.com wrote:
> Hi all,
>
> I am seeking a module that will do the equivalent of linear regression in
> 3D to yield a best fit a plane through a set of points (X1, Y1, Z1), (X1,
> Y1, Z1),... (Xn, Yn, Zn).
>
> The resulting equation to be of the form:
>
>  Z = aX + bY + c
>
> The function I need would take the set of points and return a,c & c Any
> pointers to existing code / modules would be very helpful.
>

You don't mention what you found lacking in the several possibilities
thrown up by googling "linear regression python" ...



From max at alcyone.com  Wed Sep 13 23:29:24 2006
From: max at alcyone.com (Erik Max Francis)
Date: Wed, 13 Sep 2006 20:29:24 -0700
Subject: time-based point system
In-Reply-To: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
Message-ID: <0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>

Jay wrote:

> I'm writing a game script and the point system will be based upon time.
>  The less time there is between event one and event two, the higher
> score you'll get for event two.  However, I've got a problem figuring
> how to do this.  Here's why.  I don't want the score system to just be
> a straight charted system.  Y'know, like if the time is between x and y
> then the points you get are z.  I want to mathematically figure out the
> pointage.  That's what I can't figure out how to do.  If it were such
> that the more time there is, the more points there are, that would be
> easy.  I could just multiply the time by something or other.  Or, if
> there was a time limit between the two events, that, too, would be easy
> because I could subtract the amount of time spent from the possible
> amount of time and multiply by something for points.  Neither of these
> are the case.  Any suggestions?

You haven't indicated what _is_ the case, so this question cannot yet be 
answered.  You have to specify what the points measure, how they measure 
it, and how they change over time.  Once you do that, you can define (or 
get help defining) how to calculate them.  As it is you've not given 
nearly enough information to answer your question.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   Get married, but never to a man who is home all day.
    -- George Bernard Shaw


From theller at python.net  Wed Sep 20 10:11:36 2006
From: theller at python.net (Thomas Heller)
Date: Wed, 20 Sep 2006 16:11:36 +0200
Subject: Using py2exe to wrap a service?
In-Reply-To: <CCAC78D42E32184F8E26DC163DB98306C1B47D@vogbs009.gb.vo.local>
References: <CCAC78D42E32184F8E26DC163DB98306C1B47D@vogbs009.gb.vo.local>
Message-ID: <eeri6p$233$1@sea.gmane.org>

Tim Golden schrieb:
> [Maria.Reinhammar at accalon.com]
> 
> [... snip ...]
> 
> |   File "win32com\client\__init__.pyc", line 73, in GetObject
> |   File "win32com\client\__init__.pyc", line 88, in Moniker
> | pywintypes.com_error: (-2147221020, 'Invalid syntax', None, None)
> | 
> | The offending line is:
> | import active_directory as AD
> | ...
> | for item in AD.search ("objectCategory='Person'"):
> 
> Not infrequently -- and quite bizarrely -- "Invalid syntax"
> errors in COM sometimes come down to a mishandling of threading. 
> To ask the obvious: do you have a pythoncom.CoInitialize ()
> somewhere in your code?
> 
> This is a bit invisible, because Services are inherently
> threaded, while you were probably running it before
> unthreaded.
> 
> May not be the answer, but worth a try.

Maybe another possibility is that py2exe fails to include makepy
generated modules.  Could that lead to this error?

Thomas



From martin at v.loewis.de  Sat Sep  9 12:41:09 2006
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Sat, 09 Sep 2006 18:41:09 +0200
Subject: ANN: GMPY binaries for Windows 2.5
In-Reply-To: <pan.2006.09.01.08.09.20.737216@gmx.net>
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
	<pan.2006.09.01.08.09.20.737216@gmx.net>
Message-ID: <4502EEA5.6090402@v.loewis.de>

Marc 'BlackJack' Rintsch schrieb:
> Interesting subject line.  I think I still have a set of "Win 3.11 for
> workgroups" disks lying around somewhere, but where do I get Windows 2.5? ;-)

IIRC, there was no Windows 2.5 release. There was a Windows 2.1 release;
it was released in May '88, but then the next release was Windows 3.0.
The new feature in Windows 2.1 was support for the extended address
space of 80286 and 80386 processors.

I don't think there was a Python port to Windows 2.x.

Regards,
Martin


From apardon at forel.vub.ac.be  Wed Sep 13 03:45:02 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 13 Sep 2006 07:45:02 GMT
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
Message-ID: <slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>

On 2006-09-13, Delaney, Timothy (Tim) <tdelaney at avaya.com> wrote:
> Antoon Pardon wrote:
>
>> This is just an idea of mine, nothing I expect python to adapt.
>> But just suppose the language allowed for words in bold. A word
>> in bold would be considered a reserved word, a word in non bold
>> would be an identifier.
>
> Exactly how am I supposed to use my text editor to make words bold? Is
> every text editor supposed to understand a "python format" for code?

The standard answer here to people complaining about their editor not
working well with python is that they should use a better editor.

> Besides, I don't like bold for keywords (or anything in code)

So? I don't like to append an "_" to make a reserved keyword into
an identifier. What individual people like or not is not a big
concern.

> - I like
> my keywords blue (RGB 0, 0, 255). Of course, with a "python format", I
> could make *my* keywords blue. But I can pretty much guarantee that my
> preferred editor will not ever understand "python format".

<Shrug>, Different options are possible, in a file the keywords
could just be prefixed with a Ctrl-K, and depending on the editor or its
setting, this could be shown bold or blue or whatever. I don't care
about the specifics at this point. I just wanted to make clear there
is the option to make/show the distiction between identifiers and keywords
more explicitly.

-- 
Antoon Pardon


From ldo at geek-central.gen.new_zealand  Mon Sep 25 19:12:12 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 11:12:12 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8d06$fui$5@lust.ihug.co.nz>
	<mailman.560.1159188345.10491.python-list@python.org>
Message-ID: <ef9nmi$snj$2@lust.ihug.co.nz>

In message <mailman.560.1159188345.10491.python-list at python.org>, Steve
Holden wrote:

> When you use the DB API correctly and paramterise your queries you still
> need to quote wildcards in search arguments, but you absolutely
> shouldn't quote the other SQL specials.
> 
> That's what parameterised queries are for on the first place...

So you're suggesting I quote the wildcards, then rely on autoquoted
parameters to handle the rest? Unfortunately, that's stupid mistake number
2.


From gdamjan at gmail.com  Mon Sep  4 18:39:34 2006
From: gdamjan at gmail.com (Damjan)
Date: Tue, 05 Sep 2006 00:39:34 +0200
Subject: Python newbie with a problem writing files
References: <mailman.10321.1157331982.27775.python-list@python.org>
Message-ID: <44fcaaa8$0$75035$14726298@news.sunsite.dk>

> Code:
<snip>
>     xml_output.write = (feed_title)

How did you come up with that "=" there??!
The correct line is:
        xml_output.write(feed_title)


> Traceback (most recent call last):
>   File "C:/My_Blogroll/JJ_Blogroll2", line 11, in ?
>     xml_output.write = (feed_title)
> AttributeError: 'file' object attribute 'write' is read-only

-- 
damjan


From steve at holdenweb.com  Wed Sep 20 15:48:36 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 15:48:36 -0400
Subject: Looking for a reports module/project
In-Reply-To: <1158774635.5288.5.camel@localhost.localdomain>
References: <1158774635.5288.5.camel@localhost.localdomain>
Message-ID: <ees5t4$gkr$2@sea.gmane.org>

John Purser wrote:
> Hello,
> 
> I'm working on a script to gather data from our servers and then present
> the data as part of daily maintenance.  Pretty straight forward stuff.
> However one of the limitations of an earlier design was presentation of
> the data so I'm working to make this version's report much clearer.  I
> hate to cut a bunch of single purpose code.  Before I wander down this
> road too far I thought I'd ask if anyone else has found a good module or
> project for writing simple text reports with python.
> 
> Thanks for the recommendations.
> 
www.reportlab.org gives you even more that that.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ejatwellkeeperdotcom  Thu Sep 28 14:41:58 2006
From: ejatwellkeeperdotcom (Erik Johnson)
Date: Thu, 28 Sep 2006 12:41:58 -0600
Subject: how do you know if open failed?
References: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
	<451c0669$0$19689$88260bb3@free.teranews.com>
Message-ID: <451c178e$1@nntp.zianet.com>


"tobiah" <toby at tobiah.org> wrote in message
news:451c0669$0$19689$88260bb3 at free.teranews.com...
> SpreadTooThin wrote:
> > f = open('myfile.bin', 'rb')
> >
> > How do I know if there was an error opening my file?
> >
> try:
>          open('noexist')
> except:
>          print "Didn't open"

    That's a way to trap any exception. I think a better answer to the
question is "You'll know if it didn't work because Python throws exceptions
when it runs into problems." You can catch exceptions and try to do
something about them if you want to. Uncaught exceptions cause the
interpreter to exit with a stack trace. Sometimes that's the most logical
thing to do.

>>> fd = open('doesnt_exist', 'rb')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
IOError: [Errno 2] No such file or directory: 'doesnt_exist'


It would throw a different exception if there were a permission problem, for
example.

-ej




From fredrik at pythonware.com  Thu Sep 14 03:19:14 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 09:19:14 +0200
Subject: stock quotes
In-Reply-To: <4508BF64.1050606@websafe.com>
References: <bF2Og.230637$k%3.67439@dukeread12> <4508BF64.1050606@websafe.com>
Message-ID: <eeavpi$dh8$3@sea.gmane.org>

Larry Bates wrote:

> If the HTML on the page(s) you want to process is clean and well formed it
> can be pretty easy.  Download elementree from:
> 
> http://effbot.org/zone/element-index.htm

and if it turns out to be messy, but you still want to use the same API, 
see:

     http://effbot.org/zone/element-soup.htm

</F>



From onurb at xiludom.gro  Tue Sep 12 04:37:21 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 12 Sep 2006 10:37:21 +0200
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <mailman.297.1158011072.5279.python-list@python.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<mailman.297.1158011072.5279.python-list@python.org>
Message-ID: <450671c2$0$28612$636a55ce@news.free.fr>

Marty wrote:
> On 9/11/06, Mike Owens <mikeowens at gmail.com> wrote:
>> I coworker pointed me to this thread.
> 
> Joy for us.
> 
>>
>> < snipped good information >
> 
> In all seriousness, the information you present here is great, and
> much appreciated. Your sarcastic, condescending tone kind of gets in
> the way of the message, though.

What about jokes on "waterheadretard" then ?

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From hg at nospam.com  Wed Sep 13 09:13:43 2006
From: hg at nospam.com (hg)
Date: Wed, 13 Sep 2006 08:13:43 -0500
Subject: socket question
Message-ID: <TzTNg.138371$LF4.101169@dukeread05>

Hi,

I am not sure whether this is a python-related question.

If I have device A than sends XX bytes to device B, and device B does a
recv(XX) using the default timeout, what could make device B wake-up
with less than XX bytes received ?

Regards,

hg


From python.list at tim.thechases.com  Fri Sep  1 10:57:04 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 01 Sep 2006 09:57:04 -0500
Subject: working with ldap files (2nd answer)
In-Reply-To: <44F8478B.8030108@tim.thechases.com>
References: <1157119067.915441.219160@m79g2000cwm.googlegroups.com>
	<44F8478B.8030108@tim.thechases.com>
Message-ID: <44F84A40.80200@tim.thechases.com>

>> I have this string on a field
>> CN=pointhairedpeoplethatsux,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com;CN=pointhairedboss,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com
>> this string is all the groups one user has membership.
>> So what I am trying to do.
>> read this string
>> and extract only the CNs
>>
>> like
>>
>> pointhairdepeoplethatsux,pointhairedboss
> 
>  >>> s = 
> "CN=pointhairedpeoplethatsux,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com;CN=pointhairedboss,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com"

Or, if you're a regexp junkie...

 >>> import re
 >>> r = re.compile('CN=([^;,]*)')
 >>> r.findall(s)
['pointhairedpeoplethatsux', 'pointhairedboss']

I'll leave timing comparisons as an exercise to the reader... ;)

Both of these solutions make the assumption that neither a comma 
nor a semicolon are permissible in a CN.

-tkc





From __peter__ at web.de  Thu Sep 21 08:50:54 2006
From: __peter__ at web.de (Peter Otten)
Date: Thu, 21 Sep 2006 14:50:54 +0200
Subject: Changing behaviour of namespaces
References: <mailman.404.1158839725.10491.python-list@python.org>
Message-ID: <eeu1ok$iru$02$1@news.t-online.com>

Mikael Olofsson wrote:

> This is in Python 2.3.4 under WinXP.

To feed an arbitrary mapping object to execfile() you need to upgrade to
Python 2.4.

http://docs.python.org/dev/lib/built-in-funcs.html#l2h-26

Peter


From fredrik at pythonware.com  Fri Sep 29 15:14:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 21:14:49 +0200
Subject: retry in exception
In-Reply-To: <1159555060.721235.119530@b28g2000cwb.googlegroups.com>
References: <451d4294$1@news.vo.lu>	<slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
	<1159555060.721235.119530@b28g2000cwb.googlegroups.com>
Message-ID: <efjrb8$709$1@sea.gmane.org>

MonkeeSage wrote:

> I don't think python has any equivalent (could be wrong).

a trivial combination of while and try/except/else does the trick:

n = 0

while 1:
     try:

	# do something
	print n
	n = n + 1
	# make sure it fails a couple of times
	if n < 10:
	    raise ValueError

     except ValueError:
	pass # retry
     else:
	break # done



From MonkeeSage at gmail.com  Sun Sep 17 03:58:30 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 17 Sep 2006 00:58:30 -0700
Subject: Finding dynamic libraries
References: <mailman.131.1158333391.10491.python-list@python.org>
	<1158367145.252363.21230@d34g2000cwd.googlegroups.com>
	<mailman.166.1158391127.10491.python-list@python.org>
	<1158477794.780781.83700@i42g2000cwa.googlegroups.com>
	<mailman.195.1158478458.10491.python-list@python.org>
Message-ID: <1158479910.501103.154950@d34g2000cwd.googlegroups.com>

Robert Kern wrote:
> It depends on the OS. Most Linux systems do not.

Hmm. Looks like 'man dlopen' confirms that (on my box anyway). It looks
like the working directory is never searched at all (unless it is
explicitly listed somewhere). Bummer. What about using ldconfig -l?

Regards,
Jordan



From gandalf at designaproduct.biz  Mon Sep 11 15:13:16 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Mon, 11 Sep 2006 21:13:16 +0200
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
Message-ID: <4505B54C.30905@designaproduct.biz>

Daniel Crespo ?rta:
> Hello everybody,
>
> I'm trying to implement a secure xmlrpc server with basis on
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496786 recipe.
> The thing that I'm concerned about is how can I get/create rapidly the
> .pem files (the key and cert).
>
> Any help?
>   
Hello,

If you have OpenSSL installed, you can do the following:

1. Create a new directory and place the two attached files in it 
(openssl.cnf and generate.sh)
2. Run  "chmod +x gen_cert.sh ; ./gen_cert.sh  yourdomain.com"
3. Answer to the questions. Be sure that your common name is your domain 
name.

Then you will find PEM and DER formatted files. You should use the 
unencrypted key.pem and cert.pem files.

Let me know if you have any problem.

Best,

   Laszlo

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From Eric_Dexter at msn.com  Mon Sep  4 16:52:02 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 4 Sep 2006 13:52:02 -0700
Subject: newbe question about removing items from one file to another file
In-Reply-To: <mailman.10347.1157398278.27775.python-list@python.org>
References: <1156714534.318183.326220@i3g2000cwc.googlegroups.com>
	<1157338719.276714.7400@74g2000cwt.googlegroups.com>
	<mailman.10347.1157398278.27775.python-list@python.org>
Message-ID: <1157403122.851872.218820@e3g2000cwe.googlegroups.com>

I am have to be able to distribute se with the project in order to use
it
I started with import se but I did not use the setup command
when I comment out import se the program works and when
I use import se everything connected to the library crashes on the
import line..




Anthra Norell wrote:
> ----- Original Message -----
> From: <Eric_Dexter at msn.com>
> Newsgroups: comp.lang.python
> To: <python-list at python.org>
> Sent: Monday, September 04, 2006 4:58 AM
> Subject: Re: newbe question about removing items from one file to another file
>
>
> >
> > Anthra Norell wrote:
> > > Dexter,
> > >
> > > Here's a function that screens out all instrument blocks and puts them into a dictionary keyed on the instrument number:
> > >
> > > --------------------------------------------
> > >
> > > def get_instruments (file_name):
>
> etc.
>
> > > > <CsOptions>
> > > > >   -W -d -o tone.wav
> > > > > </CsOptions>
> > > > >
> > > ...
> > > etc.
> >
> > I cut and pasted this..  It seems to be crashing my program.. I am not
> > sure that I have all the right imports..  seems to be fine when I go to
> > an older version of the file...  I uploaded it onto source forge.
> >
> > https://sourceforge.net/project/showfiles.php?group_id=156455&package_id=201306&release_id=444362
> > http://www.dexrow.com
> >
>
> Eric (Eric or Dexer?)
>       This thread seems to have split. So let me reiterate: please copy the output when you cut, paste and run. If you have an
> import problem it must be on the other side of your interface with SE, because I don't import anything and SE imports what it needs.
> 
> Frederic



From jon+usenet at unequivocal.co.uk  Mon Sep 25 09:46:02 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 13:46:02 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
Message-ID: <slrnehfnch.6tm.jon+usenet@snowy.squish.net>

In article <mailman.563.1159190394.10491.python-list at python.org>, Fredrik Lundh wrote:
> If you're really serious about making things easier to use, shouldn't
> you look at the whole picture?  HTML documents are byte streams, so
> any transformation from internal character data to HTML must take both
> escaping and encoding into account.

Ever heard of modular programming? I would suggest that you do indeed
take a step back and look at the whole picture - it's the whole
picture that needs to take escaping and encoding into account. There's
nothing to say that cgi.escape should take them both into account in
the one function, and in fact as you yourself have already commented,
good reasons for it not to, in that it would make it excessively
complicated.  

> If you and Lawrence have a hard time remembering how to use the
> existing cgi.escape function, despite it's utter simplicity, surely
> it would make your life even easier if there was an alternative API
> that would handle both the easy part (escaping) and the hard part
> (encoding) ?

You seem to be arguing that because, in an ideal world, it would be
better to throw away the 'cgi' module completely and start again, it
is not worth making minor improvements in what we already have. 
I would suggest that this is, to put it mildly, not a good argument.

> I've already explained that, but since you're convinced that your use
> case is more important than other use cases, and you don't care about
> things like stability and respect for existing users of an API, nor
> the cost for others to update their code and unit tests, I don't see
> much need to repeat myself.

You are merely compounding your bad manners. All of your above
allegations are outright lies. I am not sure if you are simply not
understanding the simple points I am making, or are deliberately
trying to mislead people for some bizarre reason of your own.

> Breaking things just because you think you can simply isn't the
> Python way of doing things.

Your hyperbole is growing more extravagant. To begin with, you were
claiming that the suggested change would make things (minisculely)
less efficient, now you're claiming it will "break" unspecified
things. What precisely do you think it would "break"?


From antroy at gmail.com  Tue Sep 19 09:09:06 2006
From: antroy at gmail.com (Ant)
Date: 19 Sep 2006 06:09:06 -0700
Subject: How to efficiently proceed addition and subtraction in pythonlist?
In-Reply-To: <mailman.269.1158670041.10491.python-list@python.org>
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
	<mailman.245.1158619745.10491.python-list@python.org>
	<eeonls$sdt$1@sea.gmane.org> <eeook1$vtc$1@sea.gmane.org>
	<mailman.269.1158670041.10491.python-list@python.org>
Message-ID: <1158671345.996422.102950@i3g2000cwc.googlegroups.com>


Steve Holden wrote:
> Fredrik Lundh wrote:
> > Steve Holden wrote:
> >
...
> """if performance is *really* important, you
> need to benchmark both options"""

Fair point.



From yakumo9275 at gmail.com  Thu Sep 14 22:36:16 2006
From: yakumo9275 at gmail.com (stu)
Date: 14 Sep 2006 19:36:16 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <Xns983EBE117F9FEOKB@199.45.49.11>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
	<mailman.109.1158271534.10491.python-list@python.org>
	<Xns983EBE117F9FEOKB@199.45.49.11>
Message-ID: <1158287776.446676.134320@i42g2000cwa.googlegroups.com>


OKB (not okblacke) wrote:
> What I'm interested in knowing is whether anyone has found any
> editor other than TextPad and UltraEdit which allows soft word-wrap (no
> line breaks stored in the file) which do NOT wrap the text to the left
> edge of the screen but instead wrap it back only as far as the
> indentation level of the beginning of the line.  So that if I start out
> on a line indented halfway across the screen, and the line wraps, I get
> a block of text, all of which is indented halfway across the screen --
> but then it's saved in the file as one long line.  In other words, an
> editor that separates how the text is DISPLAYED from how it's SAVED.
>

jEdit.. cough.. does this just fine... sticky indent without adding
linebreaks...
or you can have sticky indent with linebreaks... its up to you

-stu



From onurb at xiludom.gro  Mon Sep 25 05:39:50 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 25 Sep 2006 11:39:50 +0200
Subject: PyOpenGL pour python 2.5 ???
In-Reply-To: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>
References: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>
Message-ID: <4517A3E6.20106@xiludom.gro>

S?bastien Ramage wrote:
> Bonjour ? tous,


Hi S?bastien.

Wrong newsgroup, I'm afraid - either repost here in english, or post to
fr.comp.lang.python...


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From wildemar at freakmail.de  Tue Sep 12 15:12:04 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Tue, 12 Sep 2006 21:12:04 +0200
Subject: "filtered view" upon lists?
In-Reply-To: <ee6nre$atu$1@sea.gmane.org>
References: <mailman.337.1158062350.5279.python-list@python.org>	<878xkpb5wa.fsf@gmail.com>	<4506D471.7010905@freakmail.de>
	<ee6nre$atu$1@sea.gmane.org>
Message-ID: <45070684.8000200@freakmail.de>

Steve Holden wrote:
 >> I think SQL views are the direct analog.
 >>
 > I don't think they are. If you add a non-conforming row to a SQL view 
it doesn't appear int he view. If you modify a row in an updateable view 
so it no longer confirms with the view's conditions it disappears from 
the view.

Me and my wording again: I typed 'direct analog' but meant 'somewhat 
analog'.

 > Also you don't say whether changes to l are supposed to be reflected 
in f in the same way that changes to f are reflected in l.

Right. Yes, the synchronicity (a word?) is meant to be in both directions.

 > It might be better if you were to explain your use case: what is this 
beast supposed to be for?

I have a database of interconnected objects. Each object has a list 
tuples; these tuples hold references to other objects and details about 
the type of connection.
The 'views' I am imagining are sub-lists of this one list, based on the 
connection types. Order is important here, that's why I'm not using sets.
BTW: I have gone the way of nested lists before and found it too rigid 
and complicated to use.


 >> A bit clearer now?
 >>
 >Hardly at all. Frankly it doesn't seem as though you really know what 
 > the specifications are yourself, so you can hardly expect us to 
divine > them by use of our psychic powers. Besides which, psychic 
powers cost > extra ;-)

Right again. I'm not sure what I want yet as I'm still exploring ideas. 
If something /like/ the above had existed (which by now I'm gathering is 
not the case) I'd just adapted my ideas to the specs given.


 > So give us that use case so we get a bit more insight into why you 
even see the need for such a thing and how you want it ti behave. Or is 
all this just theoretical?

No no, its very much real. Just not as fleshed out as it might be --- 
I'm sort of an explorative coder; I usually don't know how something is 
going to work until it works.

Thx for the effort :)
wildemar



From f.braennstroem at gmx.de  Tue Sep 26 01:50:34 2006
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Tue, 26 Sep 2006 07:50:34 +0200
Subject: python gtk based file manager
References: <mailman.594.1159209259.10491.python-list@python.org>
	<1159220297.275704.71600@e3g2000cwe.googlegroups.com>
Message-ID: <efaf3a$fm0$1@sea.gmane.org>

Hi,

* faulkner <faulkner612 at comcast.net> wrote:
> http://www.google.com/search?q=emelfm2
> awesome file manager written in C using gtk.
> i've been meaning to write something like emelfm in pygtk, but emelfm
> already exists...

Thanks! I found it too, but I am looking for a python
version ... python seems to me a lot easier than C, esp. for
adjusting and adding some functions for my daily use. I
found wxPyAtol, which could be a good base, but
unfortunately there is no wx installed at my office machine
:-(

>
> Fabian Braennstroem wrote:
>> Hi,
>>
>> I am looking for a file manager based on pygtk. It seems
>> that there does not exist any!? Maybe, someone has a hint or
>> already some starting code lines for such a 'thing'!?
>> 
>> Greetings!
>>  Fabian
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>

Greetings!
 Fabian



From fredrik at pythonware.com  Thu Sep 28 12:47:20 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 18:47:20 +0200
Subject: XSLT speed comparisons
In-Reply-To: <451BE0D9.40808@dcube-resource.be>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>	<451BD332.1080505@websafe.com>
	<451BE0D9.40808@dcube-resource.be>
Message-ID: <efguan$1af$1@sea.gmane.org>

Jan Dries wrote:

>> For max speed you might want to try pyrxp:
>>
>> http://www.reportlab.org/pyrxp.html
> 
> Except that pyrxp, to the best of my knowledge, is an XML parser and 
> doesn't support XSLT, which is a requirement for Damian.

and last time I checked, both cElementTree and libxml2 (lxml.etree) was 
faster, so the "max speed" claim isn't that accurate either...

</F>



From DustanGroups at gmail.com  Sat Sep 23 20:15:14 2006
From: DustanGroups at gmail.com (Dustan)
Date: 23 Sep 2006 17:15:14 -0700
Subject: webbrowser module's Firefox support
In-Reply-To: <1159056130.721134.145060@m73g2000cwd.googlegroups.com>
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
	<1159053936.813103.38840@d34g2000cwd.googlegroups.com>
	<1159056130.721134.145060@m73g2000cwd.googlegroups.com>
Message-ID: <1159056914.662797.216540@m73g2000cwd.googlegroups.com>


MonkeeSage wrote:
> Dustan wrote:
> > >>> cont=webbrowser._browsers['firefox'][1]
>
> Why not use the api? cont=webbrowser.get('firefox')

That didn't work either.

> > ValueError: close_fds is not supported on Windows platforms
> >
> > Looking in the docs on subprocess.Popopen
> > (http://docs.python.org/lib/node529.html), it says "If close_fds is
> > true, all file descriptors except 0, 1 and 2 will be closed before the
> > child process is executed. (Unix only)". I have to be frank; I have no
> > idea what this means. What should I do to fix this?
>
> It just means that on *nix there is an option to close all open file
> handles except stdin, out and err before the browser is called. I'm
> thinking that mabye get() does an OS check to see how to call
> subprocess.Popen, and you effectively bypassed it by using the
> lower-level _browsers attribute. But I could be wrong. Try it with
> get() and see how that goes.
>
> Regards,
> Jordan

Another thing: your fix is only temporary. Is there a way to make it
work even after I close IDLE? I changed the command you gave me a bit
so it doesn't get rid of the other paths:

os.environ["PATH"]+=";C:\Program Files\Mozilla Firefox;" # can't
remember the path for firefox right now...

But either way, it ends up going right back to the previous value after
I close IDLE.



From nkammah at yahoo.fr  Mon Sep 18 22:08:05 2006
From: nkammah at yahoo.fr (kepioo)
Date: 18 Sep 2006 19:08:05 -0700
Subject: weird exception : AttributeError: 'module' object has no attribute
	'logException'
Message-ID: <1158631685.859983.194620@m73g2000cwd.googlegroups.com>

I am running a script (summary.py) which is calling the method
logException in another module ( pytool).

Yesterday, ard 18:50, all of a sudden summary.py was throwing the
exception :

AttributeError: 'module' object has no attribute 'logException'


What I did to fix it was to delete the compiled version of the pytool
and run again. And it worked again.


I am now trying to understand what happened, working with the network
admin to see who modified the direcory where pytool is stored.

But do you have any idea of what could have happened? All the imports
are working, but no method could be called on the compiled files.


Thanks for your help,

N.



From p.lavarre at ieee.org  Tue Sep 26 19:13:20 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 26 Sep 2006 16:13:20 -0700
Subject: shlex.split != shlex.shlex get_token til eof
References: <1158949149.537922.272920@h48g2000cwc.googlegroups.com>
	<1158963562.701766.283150@d34g2000cwd.googlegroups.com>
	<1159238098.139446.232380@b28g2000cwb.googlegroups.com>
	<1159309826.253204.136840@i3g2000cwc.googlegroups.com>
Message-ID: <1159312400.795100.72640@i42g2000cwa.googlegroups.com>

Correspondingly, to the Faq Wiki I added:

/// http://pyfaq.infogami.com/installed-index

Q: Where is Python installed on my machine?

A: Binaries in bin/, source in lib/, doc somewhere else. Read the
module source when you find its doc incomplete.

On Linux, ...

On the Mac, straight from Apple:
/System/Library/Frameworks/Python.framework/Versions/*

On the Mac, straight from Apple:
/System/Library/Frameworks/Python.framework/Versions/*

On the Mac, downloaded yourself:
/Library/Frameworks/Python.framework/Versions/*

On Windows, downloaded yourself:
C:\Python*

///



From ninjazombie at net.hr  Sun Sep 24 17:25:30 2006
From: ninjazombie at net.hr (NinjaZombie)
Date: Sun, 24 Sep 2006 23:25:30 +0200
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
	<7x8xk9t1mn.fsf@ruckus.brouhaha.com>
	<4nob2hFbbk5nU1@individual.net>
Message-ID: <pan.2006.09.24.21.25.30.501862@net.hr>

Na dan Sun, 24 Sep 2006 23:19:12 +0200, Bjoern Schliessmann je napisao:

> Paul Rubin wrote:
>> NinjaZombie <ninjazombie at net.hr> writes:
> 
>>> I was wondering if it is possible to turn the current python
>>> proccess into a unix daemon, but not doing it like this:
>>> python myscript.py &
>>> but from code programaticaly.
>  
>> Yeah, os.fork and the parent process exits.
> 
> Or little helpers like twistd -- only feasible if you use Twisted
> though.

Thanks guys, but I'm a little new to this. Take a look at this very simple
code:

import os
print "Entering program"
os.fork()
while (1):
	pass    # some other work


I was expexting that after 'os.fork()', the rest of the program would run
in the background, which it isn't.


From simon at brunningonline.net  Wed Sep 27 11:40:06 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Wed, 27 Sep 2006 16:40:06 +0100
Subject: Surprise using the 'is' operator
In-Reply-To: <451A9824.6040106@tobiah.org>
References: <mailman.746.1159307893.10491.python-list@python.org>
	<451A9824.6040106@tobiah.org>
Message-ID: <8c7f10c60609270840l6447e877u93df80355de6acb0@mail.gmail.com>

On 9/27/06, tobiah <toby at tobiah.org> wrote:
> Suppose I fill an list with 100 million random integers in the range
> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
> of '12345' pointed to the same integer object?  Why should more be made,
> when they all do the same thing, and are not subject to change?

If you were to drop that list, then to generate another large list of
integers, you'd want to re-use the memory from the first lot, wouldn't
you?

(BTW, AFAIK, integers are kept seperate from other objects
memory-wise, so memory used for integers won'tr be re-used for other
object types. but memory used for integers can be re-used for *other*
integers. I think.)

-- 
Cheers,
Simon B,
simon at brunningonline.net


From g.brandl-nospam at gmx.net  Tue Sep 26 09:13:45 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 26 Sep 2006 15:13:45 +0200
Subject: A critique of cgi.escape
In-Reply-To: <efb1q3$a43$2@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz> <efaknl$867$2@news.albasani.net>
	<efakui$idf$4@lust.ihug.co.nz> <efate6$ilf$1@news.albasani.net>
	<efb1q3$a43$2@lust.ihug.co.nz>
Message-ID: <efb92a$uj3$1@news.albasani.net>

Lawrence D'Oliveiro wrote:
> In message <efate6$ilf$1 at news.albasani.net>, Georg Brandl wrote:
> 
>> Lawrence D'Oliveiro wrote:
>>> In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:
>>> 
>>>> Lawrence D'Oliveiro wrote:
>>>>> In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M
>>>>> wrote:
>>>>> 
>>>>>> Lawrence is right that the escape method doesn't work the way he
>>>>>> expects it to.
>>>>>> 
>>>>>> Rewriting a library module simply because a developer is surprised is
>>>>>> a *very* bad idea.
>>>>> 
>>>>> I'm not surprised. Disappointed, yes. Verging on disgust at some
>>>>> comments in this thread, yes. But "surprised" is what a lot of users of
                                         ^^^^^^^^^^^
>>>>> the existing cgi.escape function are going to be when they discover
>>>>> their code isn't doing what they thought it was.
>>>> 
>>>> Why should they be surprised? The documentation states clearly what
>>>> cgi.escape() does (as does the docstring).
>>> 
>>> Documentation frequently states stupid things. Doesn't mean it should be
>>> treated as sacrosanct.
>> 
>> That's not the point. The point is that someone using cgi.escape() will
>> hardly be surprised of what it does and doesn't do.
> 
> And this surprise, or lack of it, is relevant to the argument how, exactly?

Which argument? You said users were going to be surprised, I told you why they
aren't.

Georg

(Okay, this is my last posting to this thread)


From vatamane at gmail.com  Fri Sep 29 15:11:10 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 29 Sep 2006 12:11:10 -0700
Subject: How to query a function and get a list of expected parameters?
In-Reply-To: <slrnehqpdl.810.matt@mwilson.umlcoop.net>
References: <slrnehqpdl.810.matt@mwilson.umlcoop.net>
Message-ID: <1159557070.014166.213670@h48g2000cwc.googlegroups.com>

Matt,

In [26]:   inspect.getargspec(f)
Out[26]: (['x1', 'x2'], None, None, None)

For more see the inspect module.

-Nick Vatamaniuc

Matthew Wilson wrote:
> I'm writing a function that accepts a function as an argument, and I
> want to know to all the parameters that this function expects.  How can
> I find this out in my program, not by reading the source?
>
> For example, I would want to know for the function below that I have to
> pass in two things:
>
> def f(x1, x2): return x1 * x2
>
> It would be nice to get the names also.
>
> All help is welcome.
>
> TIA
>
> Matt
>
>
>
> --
> A better way of running series of SAS programs:
> http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles



From uriel.katz at gmail.com  Mon Sep 25 20:58:32 2006
From: uriel.katz at gmail.com (urielka)
Date: 25 Sep 2006 17:58:32 -0700
Subject: accepts decorator
In-Reply-To: <1159222161.439787.296650@d34g2000cwd.googlegroups.com>
References: <1159222161.439787.296650@d34g2000cwd.googlegroups.com>
Message-ID: <1159232312.285993.309150@h48g2000cwc.googlegroups.com>

i think i got what the * and ** mean.
*args mean arguments that are assigned by position(that is why *arg is
a tuple)
**kwds mean arguments that are assigned using equals a=2,b=3 (that is
why **kwds i a dict)
but why self is in *args and other thing goes to **kwds? even if not
assigned using equals



From onirik79 at yahoo.it  Mon Sep 25 16:44:46 2006
From: onirik79 at yahoo.it (Andrea)
Date: 25 Sep 2006 13:44:46 -0700
Subject: 2.5 updates for syntax file
In-Reply-To: <FOVRg.23$1n3.227@news.tufts.edu>
References: <FOVRg.23$1n3.227@news.tufts.edu>
Message-ID: <1159217085.967554.196930@i3g2000cwc.googlegroups.com>

> Hi everyone. I'm updating my UltraEdit syntax file for Python 2.5 and
> was wondering if anyone knew of other additions to make besides these. I
> found all of these in the What's New document, but wasn't sure if there
> were other important things to add for highlight.

Great :)

- Two new built-in functions, any() and all()
- A new warning, UnicodeWarning



From onurb at xiludom.gro  Mon Sep  4 12:05:17 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 04 Sep 2006 18:05:17 +0200
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <1157129694.958006.40250@i3g2000cwc.googlegroups.com>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
	<1157129694.958006.40250@i3g2000cwc.googlegroups.com>
Message-ID: <44fc4ebe$0$27243$636a55ce@news.free.fr>

lazaridis_com wrote:
> ?/? Bruno Desthuilliers ??????:
>> lazaridis_com wrote:
>>> John Salerno wrote:
>>>> Are there any major differences between these two? It seems they can
>>>> both be used with TurboGears, and SQLAlchemy with Django. I'm just
>>>> wondering what everyone's preference is, and why, and if there are even
>>>> more choices for ORM.
>>>>
>>>> Thanks.
>>> You can review the Persit Case, which will shortly evaluate the stated
>>> ORM's:
>>>
>>> http://case.lazaridis.com/wiki/Persist
>>>
>>> It is possibly of importance to remember some requirements which should
>>> be relevant for an persistency mechanism targetting an OO language:
>> RDBMS are not "persistency mechanism", they are data management tools.
> 
> possibly.
> 
> but this is not relevant, as the "Persist" case does not deal with
> RDBMS.
> 
Then your post is irrelevant since there's a clear indication that the
OP question was about RDBMS integration in Python (hint: SQLObject and
SQLAlchemy both start with 'SQL').

good night.
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From paddy3118 at netscape.net  Mon Sep 18 17:11:02 2006
From: paddy3118 at netscape.net (Paddy)
Date: 18 Sep 2006 14:11:02 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
In-Reply-To: <JICPg.5009$vD2.5001@tornado.texas.rr.com>
References: <mailman.232.1158591996.10491.python-list@python.org>
	<1158602663.906546.246970@h48g2000cwc.googlegroups.com>
	<1158605612.814018.110830@m7g2000cwm.googlegroups.com>
	<JICPg.5009$vD2.5001@tornado.texas.rr.com>
Message-ID: <1158613862.668699.4830@d34g2000cwd.googlegroups.com>


Paul McGuire wrote:

> Success lies in the journey, not the destination.
>
> or in Yoda-speak:
>
> In the journey success lies, in the destination not.
>
> -- Paul
Ah, I always wondered what lemmings thought , before splat!!! :-)

- Pad.



From nemesis at nowhere.invalid  Sat Sep 16 13:54:27 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Sat, 16 Sep 2006 17:54:27 GMT
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<599og29q5ano6pn3s0fi13533h86j747kk@4ax.com>
Message-ID: <20060916175424.2237.2442.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:


> For the find, I personally would prefer to jump default to "body",
> but this is of course a matter of taste.

Do you mean you would like the focus to be set on the "body" search
field?

> I dos prompt, all the time the prompt doesn't return anymore
> (are there still open windows)?
>
>
> I quit with ctrl-break:
>
> Traceback (most recent call last):
>
>   File "c:\Programme\xpn\xpn.py", line 507, in destroy
>
>     self.purge_groups()
>
>   File "c:\Programme\xpn\xpn.py", line 2456, in purge_groups
>
>     articles.update(articles_dict)
>
>   File "C:\Python24\lib\UserDict.py", line 147, in update
>
>     self[k] = v
>
>   File "c:\Python24\lib\shelve.py", line 129, in __setitem__
>
>     p.dump(value)
>
> KeyboardInterrupt

I don't know how "CTRL+break" interact with XPN, it's better to close it
with its exit function "CTRL+E".

> I changed the key Find message to ctrl f, and then I restart, I got:
>
>
> Traceback (most recent call last):
>   File "c:\Programme\xpn\xpn.py", line 2987, in ?
>     main=MainWin(options.use_home,options.custom_dir)
>   File "c:\Programme\xpn\xpn.py", line 2917, in __init__
>     self.show_subscribed()
>   File "c:\Programme\xpn\xpn.py", line 557, in show_subscribed
>     total=len(articles.keys())
>   File "c:\Python24\lib\shelve.py", line 98, in keys
>     return self.dict.keys()
>   File "C:\Python24\lib\bsddb\__init__.py", line 238, in keys
>     return self.db.keys()
> DBPageNotFoundError: (-30988, 'DB_PAGE_NOTFOUND: Requested page not
> found')
> I cannot start the program anymore.
>
> maybe it has something to to with shortcuts.dat. 
> (I don't know).

No I don't think it is related to the shortcuts, it seems that
your articles db is corrupted, it got broken when the application has
been closed not in the right way.

-- 
You can tune a guitar, but you can't tuna fish.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From sjmachin at lexicon.net  Fri Sep 15 02:16:35 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 23:16:35 -0700
Subject: Converting a varargs tuple to a list - a definite pitfall for new
	comers to Python
In-Reply-To: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
References: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
Message-ID: <1158300995.224713.155350@e3g2000cwe.googlegroups.com>


metaperl.etc at gmail.com wrote:
> The following program does not work if you uncomment     #lis =
> ["xmms2"] + list(args)
>
> Evidently Python is opting for the nullary constructor list() as
> opposed to the other one which takes a sequence. But no newcomer would know this.

Are you using "the nullary constructor list()" to mean "the 0-argument
function list() that appears later in the script", and "the other one
which takes a sequence" to mean the builtin function list()"??? If, so
I guess it's not just newcomers to the English language who would be
struggling to comprehend :-)

>  And the Python docs dont give a good example of dealing with
> taking a sequence of args and converting it to a list.

You have produced 2 perfectly good examples yourself. What's your
point?

>
> I must've spent 40 minutes looking through my ora books, googling and
> irc'ing in vane on this.

There is nothing at all special about a sequence of args. It's just a
tuple, as documented and discoverable:

| >>> def func(*args):
| ...    print type(args), repr(args)
| ...
| >>> func(1,2,3,4)
| <type 'tuple'> (1, 2, 3, 4)
| >>>

Here's a tip: when you get into a pickle like that, try running
pychecker and/or pylint over your code. Here's what pychecker has to
say:

metaperllist.py:4: Invalid arguments to (list), got 1, expected 0
metaperllist.py:10: (list) shadows builtin

HTH,
John



From tadchem at comcast.net  Sun Sep 17 10:30:19 2006
From: tadchem at comcast.net (tadchem)
Date: 17 Sep 2006 07:30:19 -0700
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of
	Zion
In-Reply-To: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
Message-ID: <1158503419.301412.70290@i42g2000cwa.googlegroups.com>

"Protocols of the Elders of Zion" was a fraud
http://en.wikipedia.org/wiki/The_Protocols_of_the_Elders_of_Zion
http://ddickerson.igc.org/protocols.html
http://www.straightdope.com/mailbag/mzionprotocol.html
http://www.museumofhoaxes.com/hoaxorum/hoaxorum1869.html

The fraud was proven by identifying the sources used by the plagiarist
in 1921, but there are *still* those who believe it because it
justifies their racial hatred.

Of course, like the 'Protocols', the 9/11 conspiracy hoax will be
embraced by those whose will to believe something that justifies their
irrational prejuduces exceeds their will to understand the implications
of rational data.

As can be expected, there is a lot of overlap between the hateful
racists of the antisemitic groups and the delusional paranoids involved
in the 9/11 conspiracy theories.

Tom Davidson
Richmond, VA



From wahab at chemie.uni-halle.de  Sat Sep 30 15:30:42 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Sat, 30 Sep 2006 21:30:42 +0200
Subject: builtin regular expressions?
In-Reply-To: <1159642479.968928.34760@k70g2000cwa.googlegroups.com>
References: <451e37a5$1@news.vo.lu><87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de> <451ea5cc$1@news.vo.lu>
	<1159642479.968928.34760@k70g2000cwa.googlegroups.com>
Message-ID: <efmgtt$q1m$1@mlucom4.urz.uni-halle.de>

Thus spoke MRAB (on 2006-09-30 20:54):
> Antoine De Groote wrote:
>> I just have to learn accept the fact that Python is more verbose more
>> often than Ruby (I don't know Perl really). 
>
> One of the differences between the Python way and the Perl way is that
> the Perl way has a side-effect: Perl assigns to the variables $1, $2,
> etc. each time you execute a regular expression whereas Python just
> returns a match object for each, so it's not overwriting the results of
> the previous one. I find the Python way cleaner.

This statement reduces to the fact, that

 - in Python you keep the matches if you want,
   but drop them if you don't

   import re
   text = "this is 5 some 89 stuff 12 with numbers 21 interspersed"
   matches =  re.split('\D+', text)

 - in Perl you keep the matches if you want,
   but drop them if you don't

   $text = "this is 5 some 89 stuff 12 with numbers 21 interspersed";
   @matches = $text=~/(\d+)/g;

I fail to see the benefit of a re-object, I consider these to
be just there because regexes aren't in the core language.

Regards

Mirco


From mensanator at aol.com  Fri Sep  8 17:08:12 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 8 Sep 2006 14:08:12 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
Message-ID: <1157749692.092338.240820@m73g2000cwd.googlegroups.com>

Ben Sizer wrote:
> mensanator at aol.com wrote:
> > Bruno Desthuilliers wrote:
> > > SQLite never pretended to be a full-blown RDBMS - just a lightweight
> > > simple embedded database as SQL-compliant as possible.
> >
> > Ah, *you* haven't read the documentation either!
> >
> > "as SQL-compliant as possible"?
> >
> > ROTFLMAO!
>
> No need to be rude really. In this context "as SQL-compliant as
> possible" means, "as SQL-compliant as it is possible to be within the
> project's restrictions", which presumably refer to code size and speed.
> It's a reasonable trade-off.

And I accept those restrictions. I haven't complained about SQLite
being a subset of SQL. It's just that it's not SQL, so it can't even be
a subset.

>
> > **********************************************************
> > * The authors argue that static typing is a bug in the   *
> > * SQL specification that SQLite has fixed in a backwards *
> > * compatible way.                                        *
> > **********************************************************
> > </quote>
> >
> > "Fixed"? Up until now, I didn't think it was possible for
> > crackpot theories to be implemented in computer science.
> > This is absolutely the craziest thing I've ever heard.
>
> It's not a crackpot theory. It's a completely reasonable theory. SQL is
> based on relational algebra, which provides a mathematical set of
> operators for grouping data that is stored in separate sets. That data
> is selected and projected according to its value, and nothing else.

Ok, it's not crackpot with respect to relational algebra.

> The
> concept of it having a 'type' has been overlaid on top of this,
> presumably to facilitate efficient implementation, which tends to
> require fixed-width rows (and hence columns). It's not necessary in any
> sense, and it's reasonable to argue that if it was trivial to implement
> variable width columns as efficiently as fixed width columns, that
> explicit data types might never have needed to exist

But they do exist as far as the SQL Language Specification is
concerned. Isn't this just like the parallel postualate in Euclidean
Geometry? Sure, the parallel postulate isn't absolute truth in
geometry theory, but once you make it an axiom, then calling
it a bug and trying to fix it while claiming it's still Euclidean
Geometry is crackpot math.

If the SQLite author wants to make a new system based on a
different set of relational algebra axioms, that's fine. But claiming
the SQL Language Specification axioms are "bugs" that need to be
"fixed" is crackpot.

>
> > So much for
> > "If switching to a larger database such as PostgreSQL or Oracle
> > is later necessary, the switch should be relatively easy."
>
> If you rely too much on a language-enforced data type rather than the
> values of the underlying data, perhaps Python is not for you!

Suppose someone said "this is a new implementation of Python".
And all your programs crashed in it. Then, buried deep inside the
documentation (so as not to affect sales), you find that the author
has an issue with dynamic data types and in HIS version of Python,
all data types are static. Wouldn't you argue that what he has
isn't Python?

> Personally I've migrated from SQLite to MySQL a couple of times (on
> small projects, granted) and not found it to be a problem at all.

And yet, I, knowing how SQL is supposed to work, had all
kinds of problems. Why do you think I started this thread?
Because the kind of things that work in SQL-compliant systems
weren't working in SQLite.

>
> > Fixing the documentation is now becoming an enormous task.
>
> I don't think so... it doesn't take much to say that the module
> implements a subset of SQL but stores ignores data types.

So I can't just say

WHERE qty=12

I have to say

WHERE (qty=12) OR (qty="12")

otherwise I can't guarantee that my query will return the records
I want. Oh, and that will cause a Type mis-match error in
MS-Access meaning I literally can't migrate this query from
SQLite to MS-Access (or any other SQL-compliant database).

Do you know what INNER JOIN means?

Do you know how important it is to a relational database?

Can you explain how an INNER JOIN can even work, in theory,
with dynamic data types?

The implications of violating the SQL Language Specification
are much more serious than you think.

>
> > What are the chances that anything I send in as a bug report
> > will simply be ignored? Kind of like the Emporer's New Clothes, eh?
> > It would be an admission of ignorance and stupidity on the part
> > of the Python Development Team, wouldn't it?
>
> Why get so bitter over this? I agree the docs need fixing but you make
> it sound like this was a deliberate attempt to make you waste your
> time.

I'm not bitter, just being a squeaky wheel.

And I'd be more than happy to make PROPER corrections to the
docs if I thought the effort wouldn't be wasted. But in looking over
this thread, it certainly appears that there are very few who
understand the issue.

> 
> -- 
> Ben Sizer



From ask at me  Sat Sep 30 16:50:53 2006
From: ask at me (alf)
Date: Sat, 30 Sep 2006 16:50:53 -0400
Subject: where the extra space comes from on the stdout
Message-ID: <Kr2dnd7zz79dfoPYnZ2dnUVZ_ridnZ2d@comcast.com>

Hi,

I can not find out where the extra space comes from. Run following:

import os,sys
while 1:
     print 'Question [Y/[N]]?',
     if sys.stdin.readline().strip() in ('Y','y'):
         #do something
         pass

$ python q.py
Question [Y/[N]]?y
  Question [Y/[N]]?y
  Question [Y/[N]]?y
  Question [Y/[N]]?y
  Question [Y/[N]]?n
  Question [Y/[N]]?
  Question [Y/[N]]?


There is a space evrywhere just before Q

Any insight?

-- 
alfz1


From python.list at tim.thechases.com  Tue Sep 19 15:25:03 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 19 Sep 2006 14:25:03 -0500
Subject: new string method in 2.5 (partition)
In-Reply-To: <1158692796.366877.275040@b28g2000cwb.googlegroups.com>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<1158692796.366877.275040@b28g2000cwb.googlegroups.com>
Message-ID: <4510440F.9060600@tim.thechases.com>

>> partition(sep) condenses this pattern into a single method 
>> call that returns a 3-tuple containing the substring before
>> the separator, the separator itself, and the substring after
>> the separator. If the separator isn't found, the first
>> element of the tuple is the entire string and the other two
>> elements are empty. rpartition(sep) also returns a 3-tuple
>> but starts searching from the end of the string; the "r"
>> stands for 'reverse'.
> 
> I'm confused. What's the difference between this and
> string.split?

(please don't top-post...I've inverted and trimmed for the sake
of readability)

I too am a bit confused but I can see uses for it, and there
could be good underlying reason to do as much. Split doesn't
return the separator. It's also guarnteed to return a 3-tuple. E.g.

 >>> s1 = 'one'
 >>> s2 = 'one|two'
 >>> len(s1.split('|', 1)
1
 >>> len(s2.split('|', 1))
2

which could make a difference when doing tuple-assignment:

 >>> v1, v2 = s2.split('|', 1)
 >>> # works fine
 >>> v1, v2 = s1.split('|', 1)
[traceback]

whereas one could consistently do something like

 >>> v1, _, v2 = s1.partition('|')

without fear of a traceback to deal with.

Just a few thoughts...

-tkc





From http  Sat Sep 16 23:54:12 2006
From: http (Paul Rubin)
Date: 16 Sep 2006 20:54:12 -0700
Subject: Python blogging software
References: <1158132558.3622.29.camel@devilbox>
	<mailman.7.1158132885.10491.python-list@python.org>
	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>
	<mailman.50.1158182707.10491.python-list@python.org>
	<1158183929.155925.6050@m73g2000cwd.googlegroups.com>
	<mailman.194.1158464227.10491.python-list@python.org>
Message-ID: <7xpsdvup0b.fsf@ruckus.brouhaha.com>

"Eric S. Johansson" <esj at harvee.org> writes:
> a wise person you are.  I've often thought that most of the pages
> generated by web frameworks (except for active pages) should be cached
> once rendered.

Fancy frameworks do use caching, but I think of that as a kludgy
workaround for lousy performance of the framework itself.  A fast
framework should not need caching, except maybe caching gzip output
for large blocks of contiguous text.  

> as to the comment system, I've been very disappointed by most blog
> comment capabilities because they actively hinder the ability for
> commenters to interact with each other.  what I would like to see is a
> short-life (i.e. three day) mailing list where the message history is
> stored as if it were blog comments.

Some comment systems are better than others, but transferring the
comments to email sounds horrible, at least for users who use web
boards to keep stuff OUT of their mailboxes.

> Yes, you could build a web form techniques but the main advantage of
> Web forms over mailing lists is that they fill your mailbox with
> messages telling you that you have a message instead of delivering the
> message itself.

Yeah, that combines the worst of both worlds.  


From tony.bedford at gmail.com  Tue Sep 26 05:21:39 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 02:21:39 -0700
Subject: Talking to marketing people about Python
In-Reply-To: <5w2Sg.12715$v%4.2198@newsread1.news.pas.earthlink.net>
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<1159205875.573485.19930@i3g2000cwc.googlegroups.com>
	<roy-19BE2F.21011525092006@reader2.panix.com>
	<5w2Sg.12715$v%4.2198@newsread1.news.pas.earthlink.net>
Message-ID: <1159262499.702558.221850@e3g2000cwe.googlegroups.com>


Dennis Lee Bieber wrote:

> 	Unfortunately, if management goes further down the page, they find
> Ruby and "D" (when did that get out) both rated so many up arrows they
> had to use shorthand notation to represent 14 arrows...

Yes, there is no doubt Ruby is gaining traction - mostly due to the
success of Ruby on Rails. I was in the Ruby community in the very early
days and it was like being in a quiet backwater. As soon as ROR came on
the scene the whole thing just exploded.

I chose Python over Ruby because it has more maturity and stability (in
terms of the product). Python does the job and does it well and is
steadily growing and improving.

D has been around for several years at least. It doesn't really compete
with Python though. But not sure if it would be suitable for the
product mentioned at the start of this thread.

Cheers,
Tony



From crystalattice at gmail.com  Fri Sep 22 16:34:41 2006
From: crystalattice at gmail.com (crystalattice)
Date: 22 Sep 2006 13:34:41 -0700
Subject: Looking for opinions
Message-ID: <1158957281.793034.191730@m7g2000cwm.googlegroups.com>

I've been working on a game for several months but now I'm thinking I
may be going about it the wrong way.  It's an online RPG designed to
recreate a pen & paper session, kind of like the OpenRPG project.

Originally I planned on doing something like OpenRPG with a Python app
that contained everything.  But I'm thinking that approach may not be
necessary.  Since the game would use the Internet for everyone to play
it, maybe it would be easier/better to just make a web app w/ Python
underpinnings.  That way I wouldn't have to worry about making a Python
GUI and other "standalone" features that would have to be installed on
each players computer; they could just interact via a web browser and
IM.

The code I've made so far is just a text-based "proof-of-concept" for
the character generation to make sure I have the logic correct.  I've
only been designing a GUI for the last few weeks and trying different
things like Tkinter and wxPython, so building a whole web app won't set
me back any.

With that in mind, I'm looking for opinions from more experienced
programmers.  For this project, do you think I should continue w/
building a stand alone program or do you think making something out of
Django/Turbogears would be better?



From p at ulmcnett.com  Fri Sep  8 19:00:19 2006
From: p at ulmcnett.com (Paul McNett)
Date: Fri, 08 Sep 2006 16:00:19 -0700
Subject: urlopen() error
In-Reply-To: <1157752728.685285.197130@i42g2000cwa.googlegroups.com>
References: <1157752728.685285.197130@i42g2000cwa.googlegroups.com>
Message-ID: <4501F603.3010809@ulmcnett.com>

Tempo wrote:
> Hello. I am getting an error and it has gotten me stuck. I think the
> best thing I can do is post my code and the error message and thank
> everybody in advanced for any help that you give this issue. Thank you.
> 
> #############
> Here's the code:
> #############
> 
> import urllib2
> import re
> import xlrd
> from BeautifulSoup import BeautifulSoup
> 
> book = xlrd.open_workbook("ige_virtualMoney.xls")
> sh = book.sheet_by_index(0)
> rx = 1
> for rx in range(sh.nrows):
>     u = sh.cell_value(rx, 0)
>     page = urllib2.urlopen(u)
>     soup = BeautifulSoup(page)
>     p = soup.findAll('span', "sale")
>     p = str(p)
>     p2 = re.findall('\$\d+\.\d\d', p)
>     for price in p2:
> 		print price
> 
> ######################
> Here are the error messages:
> ######################
> 
> Traceback (most recent call last):
>   File "E:\Python24\scraper.py", line 16, in -toplevel-
>     page = urllib2.urlopen(u)
>   File "E:\Python24\lib\urllib2.py", line 130, in urlopen
>     return _opener.open(url, data)
>   File "E:\Python24\lib\urllib2.py", line 350, in open
>     protocol = req.get_type()
>   File "E:\Python24\lib\urllib2.py", line 233, in get_type
>     raise ValueError, "unknown url type: %s" % self.__original
> ValueError: unknown url type: List

You were expecting u to be a url string like "http://google.com", but it 
looks like it is actually a list. I'm not familiar with package xlrd but
cell_value() must be returning a list and not a cell value. Presumably, 
the list contains the cell value probably in element 0. Put in a print 
statement before your call to urlopen() like:

print u

You'll likely discover your error.

-- 
Paul McNett
http://paulmcnett.com
http://dabodev.com



From http  Mon Sep 25 04:36:57 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 01:36:57 -0700
Subject: Difficulty with maxsplit default value for str.split
References: <pan.2006.09.24.05.48.22.103431@REMOVE.THIS.cybersource.com.au>
Message-ID: <7xk63s2vh2.fsf@ruckus.brouhaha.com>

Steven D'Aprano <steve at REMOVE.THIS.cybersource.com.au> writes:
> Is it safe for me to pass -1 as the default to maxsplit, meaning
> "unlimited splits"? Should the docs be fixed to mention that?

Frederik gave a simple and practical solution to your immediate
problem, but yes, I think the docs should be fixed after checking the
code.


From mensanator at aol.com  Tue Sep 12 16:03:09 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 13:03:09 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<5sidnY0_IITrmZrYnZ2dnUVZ_oqdnZ2d@speakeasy.net>
Message-ID: <1158091389.180731.275700@m73g2000cwd.googlegroups.com>


A.M. Kuchling wrote:
> On 12 Sep 2006 10:24:00 -0700,
> 	mensanator at aol.com <mensanator at aol.com> wrote:
> > So, knowing that, would you agree that
> >
> ><quote Python Library Reference 13.13>
> > If switching to a larger database such as PostgreSQL or Oracle
> > is later necessary, the switch should be relatively easy.
> ></quote>
> >
> > is misleading if not outright untruthful?
>
> As the original author of that sentence, I don't think it's either
> misleading or untruthful; 'relatively easy' gives me wiggle room.

Ok, I appologize for saying that. Got a little carried away
by the flames.

> However, to fix your complaint, I've changed the paragraph to read:
>
> 	SQLite is a C library that provides a lightweight disk-based
> 	database that doesn't require a separate server process and allows
> 	accessing the database using a nonstandard variant of the SQL query
> 	language. Some applications can use SQLite for internal data
> 	storage. It's also possible to prototype an application using SQLite
> 	and then port the code to a larger database such as PostgreSQL or
> 	Oracle.
>
> Of course, if you accept Fredrik's reading of the SQL standard, the
> word 'nonstandard' in the revised text is incorrect; SQLite is
> compliant with the standard but in an unusual way.  (But most readers
> will interpret "nonstandard" as meaning "not like most other SQL
> databases", so I'll let it stand.)

And that was basically what I was originally asking for.

That and fixing the broken examples.

And maybe add a few more to illustrate SQLite manifest
typing which is alien to a long time Access user.

Should I start a new thread (sans polemics) to discuss the
examples?

> 
> --amk



From ptmcg at austin.rr._bogus_.com  Fri Sep 15 19:03:24 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 15 Sep 2006 23:03:24 GMT
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
	<1157730937.621029.259320@i3g2000cwc.googlegroups.com>
	<OTgMg.15795$o42.8868@tornado.texas.rr.com>
Message-ID: <0jGOg.1103$LH2.121@tornado.texas.rr.com>


"Paul McGuire" <ptmcg at austin.rr._bogus_.com> wrote in message 
news:OTgMg.15795$o42.8868 at tornado.texas.rr.com...
> "Andy Dingley" <dingbat at codesmiths.com> wrote in message 
> news:1157730937.621029.259320 at i3g2000cwc.googlegroups.com...
>>
>> vbfoobar at gmail.com wrote:
>>
>>> I am looking for python code that takes as input a list of strings
>>> [...] and outputs the python regular expression
>>
>>    (s1|s2|s3|s4|s5)
>> for strings of "s1" etc.
>>
>> Regex compilers are themselves quite good at optimising beyond this
>>
>
> It turns out this problem is a little trickier, especially when one of 
> your strings is a leading subset of another.  For instance, let's say we 
> are looking for comparison operators, one of <, >, =, >=, <=, or !=. 
> Simply concatenating with intervening '|' characters gives this regexp:
>
> "<|>|=|<=|>=|!="
>
> However, the leading '<' and '>' alternatives mask the later '<=', '<>', 
> and '>=' alternatives, and so the regexp never matches the longer options 
> (I was not able to find a greediness switch that would override this).  So 
> when searching "a >= b" we get this:
>
>>>> re.findall("<|>|=|<=|>=|!=", "a >= b")
> ['>', '=']
>
> By moving the longer option to the front of the regexp, the longer option 
> is no longer masked by the shorter:
>
>>>> re.findall(">=|<|>|=|<=|!=", "a >= b")
> ['>=']
>
>
> You also can't just concatenate input strings, since it is very likely 
> they will contain one of the magic re symbols ()[]?*./\+, etc.  So 
> re.escape needs to be called to add the necessary '\'s.
>
> Here is an extract from pyparsing's oneOf function that does something 
> similar, that handles the leading substring masking problem, and escapes 
> the input strings, before concatenating them to a valid regexp.  Of 
> course, the simplest approach would be to just sort the symbols by 
> descending length, but you may have some a priori knowledge that 'X' is a 
> very common match, and want that option tested as early as possible.  So 
> this method only reorders strings if there is a masking problem.
>
>
> def createREfrom( symbols ):  #symbols is a list of strings
>    isequal = ( lambda a,b: a == b )
>    masks = ( lambda a,b: b.startswith(a) )
>    i = 0
>    while i < len(symbols)-1:
>        cur = symbols[i]
>        for j,other in enumerate(symbols[i+1:]):
>            if ( isequal(other, cur) ):
>                del symbols[i+j+1]
>                break
>            elif ( masks(cur, other) ):
>                del symbols[i+j+1]
>                symbols.insert(i,other)
>                cur = other
>                break
>        else:
>            i += 1
>    return "|".join( [ re.escape(sym) for sym in symbols] )
>
>>>> print createREfrom(["ABC","ABCDEF","ABCGHI"])
> ABCDEF|ABCGHI|ABC
>>>> print createREfrom("> < = <= >= != << >> <<< >>>".split())
> \>\=|\>\>\>|\>\>|\>|\<\=|\<\<\<|\<\<|\<|\=|\!\=
>>>> re.findall( createREfrom("> < = <= >= != << >> <<< >>>".split()), "a <= 
>>>> b")
> ['<=']
>
>
> Note, this does not do any optimization, such as collapsing 
> "ABCDEF|ABCGHI" to "ABC(DEF|GHI)".  I think there are some recipes in the 
> Python cookbook for such optimization.
>
> -- Paul
>
> 




From danb_83 at yahoo.com  Tue Sep 26 02:57:14 2006
From: danb_83 at yahoo.com (Dan Bishop)
Date: 25 Sep 2006 23:57:14 -0700
Subject: A critique of cgi.escape
In-Reply-To: <efa7ff$pr2$2@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<mailman.570.1159194107.10491.python-list@python.org>
	<efa7ff$pr2$2@lust.ihug.co.nz>
Message-ID: <1159253834.519665.109770@m7g2000cwm.googlegroups.com>

Lawrence D'Oliveiro wrote:
> In message <mailman.570.1159194107.10491.python-list at python.org>, Fredrik
> Lundh wrote:
>
> > Max M wrote:
> >
> >> It also makes the  escaped html harder to read for standard cases.
> >
> > and slows things down a bit.
> >
> > (cgi.escape(s, True) is slower than cgi.escape(s), for reasons that are
> > obvious for anyone who's looked at the code).
>
> What you're doing is adding to the reasons why the existing cgi.escape
> function is stupidly designed and implemented. The True case is by far the
> most common, so to make that the slow case, as well as being the
> non-default case, is doubly brain-dead.

How exactly would you make s = s.replace('"',"&quot;") faster than
*not* doing the replacement?



From steve at holdenweb.com  Tue Sep 12 05:17:10 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 10:17:10 +0100
Subject: BaseHTTPServer weirdness
In-Reply-To: <rNOSPAMon-C3CBCE.22384311092006@news.gha.chartermi.net>
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>	<mailman.287.1158003082.5279.python-list@python.org>	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>	<mailman.294.1158010161.5279.python-list@python.org>	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>	<mailman.306.1158021619.5279.python-list@python.org>	<3qoNg.820$5i7.307@newsreading01.news.tds.net>
	<rNOSPAMon-C3CBCE.22384311092006@news.gha.chartermi.net>
Message-ID: <ee5ttd$aue$1@sea.gmane.org>

Ron Garret wrote:
> In article <3qoNg.820$5i7.307 at newsreading01.news.tds.net>,
>  Kent Johnson <kent at kentsjohnson.com> wrote:
> 
> 
>>Steve Holden wrote:
>>
>>>Ron Garret wrote:
>>>
>>>>In article <mailman.294.1158010161.5279.python-list at python.org>,
>>>> Steve Holden <steve at holdenweb.com> wrote:
>>>>
>>>>
>>>>
>>>>>But basically, you aren't providing a CGI environment, and that's why 
>>>>>cgi.parse() isn't working.
>>>>
>>>>Clearly.  So what should I be doing?  Surely I'm not the first person to 
>>>>have this problem?
>>>>
>>>>I have managed to work around this for now by copying and modifying the 
>>>>code in cgi.parse, but this still feels like a Horrible Hack to me.
>>>>
>>>
>>>Let me get this right. You are aware that CGIHTTPServer module exists. 
>>>But you don't want to use that. Instead you want to use your own code. 
>>>So you have ended up duplicating some of the functionality of the cgi 
>>>library. And it feels like a hack.
>>>
>>>Have I missed anything? :-)
>>
>>Hey, be nice. Wanting to write a request handler that actually handles a 
>>POST request doesn't seem so unreasonable.
>>
>>Except...when there are about a bazillion Python web frameworks to 
>>choose from, why start from BaseHTTPServer? Why not use one of the 
>>simpler frameworks like Karrigell or Snakelets or CherryPy?
> 
> 
> It may come to that.  I just thought that what I'm trying to do is so 
> basic that it ought to be part of the standard library.  I mean, what do 
> people use BaseHTTPServer for if you can't parse form input?
> 
> 
>>Here is the query-handling code from Karrigell's CustomHTTPServer.py, 
>>good at least for a second opinion:
>>
>>     def do_POST(self):
>>         """Begin serving a POST request. The request data must be readable
>>         on a file-like object called self.rfile"""
>>         ctype, pdict = 
>>cgi.parse_header(self.headers.getheader('content-type'))
>>         self.body = cgi.FieldStorage(fp=self.rfile,
>>             headers=self.headers, environ = {'REQUEST_METHOD':'POST'},
>>             keep_blank_values = 1, strict_parsing = 1)
>>         # throw away additional data [see bug #427345]
>>         while select.select([self.rfile._sock], [], [], 0)[0]:
>>             if not self.rfile._sock.recv(1):
>>                 break
>>         self.handle_data()
>>
>>Here is CherryPy's version from CP 2.1:
>>
>>         # Create a copy of headerMap with lowercase keys because
>>         # FieldStorage doesn't work otherwise
>>         lowerHeaderMap = {}
>>         for key, value in request.headerMap.items():
>>             lowerHeaderMap[key.lower()] = value
>>
>>         # FieldStorage only recognizes POST, so fake it.
>>         methenv = {'REQUEST_METHOD': "POST"}
>>         try:
>>             forms = _cpcgifs.FieldStorage(fp=request.rfile,
>>                                       headers=lowerHeaderMap,
>>                                       environ=methenv,
>>                                       keep_blank_values=1)
>>
>>where _cpcgifs.FieldStorage is cgi.FieldStorage with some extra accessors.
> 
> 
> Here's what I actually ended up doing:
> 
> def parse(r):
>   ctype = r.headers.get('content-type')
>   if not ctype: return None
>   ctype, pdict = cgi.parse_header(ctype)
>   if ctype == 'multipart/form-data':
>     return cgi.parse_multipart(r.rfile, pdict)
>   elif ctype == 'application/x-www-form-urlencoded':
>     clength = int(r.headers.get('Content-length'))
>     if maxlen and clength > maxlen:
>       raise ValueError, 'Maximum content length exceeded'
>     return cgi.parse_qs(r.rfile.read(clength), 1)
>   else:
>     return None
> 
> which is copied more or less directly from cgi.py.  But it still seems 
> to me like this (or something like it) ought to be standardized in one 
> of the *HTTPServer.py modules.
> 
> But what do I know?
> 
I wouldn't necessarily say you are wrong here, It's just that the cgi 
module has sort of "just growed", so it isn't conveniently factyored for 
reusability in other contexts. Several people (including me) have taken 
a look at it with a view to possible re-engineering and backed away 
because of the difficulty of maintaining compatibility. Python 3K will 
be an ideal oppoertunity to replace it, but until then it's probably 
going to stay in the same rather messy but working state.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From kadeko at gmail.com  Fri Sep  8 07:03:29 2006
From: kadeko at gmail.com (looping)
Date: 8 Sep 2006 04:03:29 -0700
Subject: Add NTLM proxy authentication to urllib2
In-Reply-To: <87k64fmh1n.fsf@pobox.com>
References: <1157442556.636114.294400@i3g2000cwc.googlegroups.com>
	<edkijp$2la$1@nemesis.news.tpi.pl> <87k64fmh1n.fsf@pobox.com>
Message-ID: <1157713409.573364.48060@h48g2000cwc.googlegroups.com>

Thanks for the answers.

I've done some tests with urllib2 and pywin32 and managed to partialy
implement the NTLM authentication, but it look like you need a
persistent connection (http 1.1 or 'Keep-Alive') to complete the
authentication.
Unfortunatly, urllib2 use a new connection for each request and
changing this behavior look difficult.
So I will probably write my own library.

Maybe there is something to do with the urlgrabber module ?



From steve at holdenweb.com  Mon Sep  4 16:15:03 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 04 Sep 2006 21:15:03 +0100
Subject: Web queries in Python
In-Reply-To: <1157394075.480663.97840@p79g2000cwp.googlegroups.com>
References: <1157394075.480663.97840@p79g2000cwp.googlegroups.com>
Message-ID: <edi1f0$8fu$1@sea.gmane.org>

Joseph wrote:
> Hi,
> Excel uses web queries to read data (like financial/weather data) from
> web. How to do the same in python? Even pointers to such would be of
> help.
> 
sholden at bigboy ~/hwb
$ python
Python 2.5b2 (trunk:50713, Jul 19 2006, 16:04:09)
[GCC 3.4.4 (cygming special) (gdc 0.12, using dmd 0.125)] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
Started with C:/Steve/.pythonrc
  >>> import urllib
  >>> f = urllib.urlopen("http://www.google.com/")
  >>> data = f.read()
  >>> print data
<html><head><meta http-equiv="content-type" content="text/html; 
charset=ISO-8859
-1"><title>Google</title><style><!--
body,td,a,p,.h{font-family:arial,sans-serif}
.h{font-size:20px}
.q{color:#00c}
--></style>
[...]
<a
  href="/intl/en/ads/">Advertising&nbsp;Programmes</a> - <a 
href=/services/>Business Solutions</a> - <a 
href=/intl/en/about.html>About Google</a> - <a 
href=http://www.google.com/ncr>Go to Google.com</a></font><p><font 
size=-2>&copy;2006 Google</font></p></center></body></html>
  >>>

So that's an easy way to get hold of the raw data. Look at htmllib or 
BeautifulSoup to parse it intot he structures you want.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From akameswaran at gmail.com  Wed Sep 13 17:32:10 2006
From: akameswaran at gmail.com (akameswaran at gmail.com)
Date: 13 Sep 2006 14:32:10 -0700
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <1158180096.940890.248050@i42g2000cwa.googlegroups.com>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
	<1158180096.940890.248050@i42g2000cwa.googlegroups.com>
Message-ID: <1158183129.963155.109460@i3g2000cwc.googlegroups.com>


Jason wrote:
> akameswaran at gmail.com wrote:
> > I wrote up a quick little set of tests, I was acutally comparing ways
> > of doing "case" behavior just to get some performance information.  Now
> > two of my test cases had almost identical results which was not at all
> > what I expected.  Ultimately I realized I don't really know how
> > literals are treated within the interpreter.
> >

the lengthy dictionaries were due to my initial testing comparing
if/ifelse constructs to dictionary cases.. btw if/ifelse seems a lot
faster till you get to at least 12 cases, and for most applications,
the number of cases would be even higher before dictionaries beat a
bunch of ifs

> > The two implementations I was looking at were:
> >
> > class caseFunction(object):
> >     def __init__(self):
> >         self.caseDict = {'a':"retval = 'a'",
> > 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> >
> > "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
> >                          "i":"retval='i'"}
> >
> >     def doIt(self,a):
> >         exec(self.caseDict.get(a))
> >         return retval
> >
> >
> >
> > def caseFunc3(a):
> >     exec(  {'a':"retval = 'a'",
> > 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> >
> > "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
> >                          "i":"retval='i'"}.get(a))
> >     return retval
> >
> >
> > I had expected caseFunc3 to be slower.  I had thought the interpreter
> > would be recreating the dictionary each time, but that doesn't seem to
> > be the case since performance of the class version and the function
> > version are nearly identical on most runs.  If i rewrite caseFunc3 as:
> >
> > def caseFunc4(a):
> >     exec(  dict({'a':"retval = 'a'",
> > 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> >
> > "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
> >                          "i":"retval='i'"}).get(a))
> >     return retval
> >
> > now with the explicit use of dict, i see the performace of the
> > functional version decline as I initially expected.
> >
> > So what is happeneing in caseFunc3.  It seems as though the literal is
> > "cached".  The other hypothesis I came up with is the name lookup for
> > self.caseDict takes the same amount of time as creating the dictionary
> > literal - but that doesn't make sense to me.
> >
> > Thanks
>
> Why not check to see what the interpreter is doing?  Rather than
> dealing with your overly complicated dictionaries, I've made a simple,
> one case dictionary.  I've also done a similar bit to replicate your
> doIt method.
>
Thanks, i didn't know about dis.  So this is very useful.

> >>> def case3(a):
> ...     exec( {'a': "retval = 'a'"}.get(a) )
> ...     return retval
> ...
> >>> case3('a')
> 'a'
> >>> def case4(a):
> ...     exec( dict({'a': "retval = 'a'"}).get(a) )
> ...     return retval
> ...
> >>> case4('a')
> 'a'
> >>> class caseFunction(object):
> ...     def doIt(self, a):
> ...         exec(self.caseDict.get(a))
> ...         return retval
> ...
>
> Then, use the dis module to disassemble the function objects:
> >>> import dis
> >>> dis.dis(case3)
>   2           0 BUILD_MAP                0
>               3 DUP_TOP
>               4 LOAD_CONST               1 ('a')
>               7 LOAD_CONST               2 ("retval = 'a'")
>              10 ROT_THREE
>              11 STORE_SUBSCR
>              12 LOAD_ATTR                0 (get)
>              15 LOAD_FAST                0 (a)
>              18 CALL_FUNCTION            1
>              21 LOAD_CONST               0 (None)
>              24 DUP_TOP
>              25 EXEC_STMT
>
>   3          26 LOAD_NAME                2 (retval)
>              29 RETURN_VALUE
> >>> dis.dis(case4)
>   2           0 LOAD_NAME                0 (dict)
>               3 BUILD_MAP                0
>               6 DUP_TOP
>               7 LOAD_CONST               1 ('a')
>              10 LOAD_CONST               2 ("retval = 'a'")
>              13 ROT_THREE
>              14 STORE_SUBSCR
>              15 CALL_FUNCTION            1
>              18 LOAD_ATTR                1 (get)
>              21 LOAD_FAST                0 (a)
>              24 CALL_FUNCTION            1
>              27 LOAD_CONST               0 (None)
>              30 DUP_TOP
>              31 EXEC_STMT
>
>   3          32 LOAD_NAME                3 (retval)
>              35 RETURN_VALUE
> >>> dis.dis(caseFunction.doIt)
>   3           0 LOAD_FAST                0 (self)
>               3 LOAD_ATTR                1 (caseDict)
>               6 LOAD_ATTR                2 (get)
>               9 LOAD_FAST                1 (a)
>              12 CALL_FUNCTION            1
>              15 LOAD_CONST               0 (None)
>              18 DUP_TOP
>              19 EXEC_STMT
>
>   4          20 LOAD_NAME                4 (retval)
>              23 RETURN_VALUE
> >>>
>
> Take a look at what happens before the 'get' attribute is loaded in
> each case.  In case 3, you've simply created a dictionary literal,
> which is a very fast operation under Python.  In case 4, you've created
> a dictionary literal, then you call the dict() function.  The dict
> function will create a dictionary from the supplied dictionary, and
> return the shallow copy.
>
I knew case4 would be slower, it did what it intended, but didn't
answer my question.  How's that for confused thinking!!

> Case 3 is slower, but the Python developers have worked to make
> dictionary creation and look-up very fast.  Did you use the timeit
> module to test your functions?
>
I had a simple timer, not timeit.

def timeIt(func,vals):
    start = time.time()
    for item in vals:
        func(item)
    return time.time()-start

#reinvented the wheel too, not a good day to program

The output provided was a good starting point, and unless I am really
misreading things, python is not caching my dictionary literal.  It
would appear as though it gets loaded every iteration - which is what I
expected.

So here's the odd part - and one I still find remarkably
counter-intuitive.  and i'll set up some of the params here

1) I did not count object instantiation in the time taken - so in the
class based version the dictionary was already created before I start
timing

2) Once the dictionary is either created (function) or retreived(class)
the execution is identical.  That can be seen from the output above you
provided.

which lead me to hypothesize:
3) loading a dictionary literal seems faster than accessing that
dictionary as a class member.

I really find 3 to be surprising although I guess I shouldn't - lookups
are not cheap... I repeat that to myself all the time.  apparently they
really really aren't cheap.

Now that begs the question... and I'm writing something up to test it.
Will a larger dictionary change this dynamic.  My suspicion yes, how
much bigger I have no idea.


and mostly thanks for the intro to a new module.  With all the esoteric
junk I play with and experiment with I can't believe I didn't stumble
on it before.



From anoopsanthosh at gmail.com  Mon Sep 25 10:06:07 2006
From: anoopsanthosh at gmail.com (Anoop)
Date: 25 Sep 2006 07:06:07 -0700
Subject: Deprecation in String.joinfields()
Message-ID: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>

Hi All,

I am getting the following error while trying to use deprecation

Please help

>>> li = ["a", "b", "mpilgrim", "z", "example"]
>>> newname = string.joinfields (li[:-1], ".")
>>> newname
'a.b.mpilgrim.z'
>>> newname = li[:-1].joinfields(".")
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
AttributeError: 'list' object has no attribute 'joinfields'

>>> newname1 = string.join (li[:-1], ".")
>>> newname1
'a.b.mpilgrim.z'
>>> newname = li[:-1].joinfields(".")
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
AttributeError: 'list' object has no attribute 'join'

Thank you for your help

Anoop



From george.sakkis at gmail.com  Wed Sep 13 13:32:20 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 13 Sep 2006 10:32:20 -0700
Subject: Dice gen and analyser script for RPGs: comments sought
References: <050920060217482624%richardb@sailmaker.co.nospam.uk>
Message-ID: <1158168740.463026.39170@i42g2000cwa.googlegroups.com>

Richard Buckle wrote:

> Comments, insights and overall evaluations are especially welcomed re:
> * Cleanliness of design
> * Pythonicity of design
> * Pythonicity of code
> * Efficiency of code
> * Quality of docstrings
> * Conformance with modern docstring standards
> * Conformance with coding standards e.g. PEP 8
>
> I look forward to receiving your comments and criticisms.

Here are some random (and less random) comments in no particular order,
with minimal or no justification; if you're not sure why some point is
good advice, simply ask :) I did just a "shallow parsing", meaning I
didn't attempt to understand what it's actually doing, check for
correctness, algorithm optimizations or major refactorings.

* Instead of importing sets, have the following snippet to be able to
use the builtin set (available since 2.4):
try: set
except NameError: from sets import Set as set

* Prefer new-style classes unless you have a good reason not to. The
change is minimal; just replace "class Dice" with "class Dice(object)".

* Replace most occurences of dict.keys, dict.values, dict.items with
dict.iterkeys, dict.itervalues, dict.iteritems respectively (unless you
write code with Py3K in mind ;-)).

* Avoid mutable default function arguments unless necessary. Instead of
a default empty list, use either an empty tuple or None (in which case
you may assign an empty list in the function's body when the argument
is None).

* Raising LookupError when a sanity check of function arguments fails
looks strange. ValueError (or a a specialised subclass of it) would be
more appropriate. 'assert' statements should also not be used for
arguments checking because they may be turned off when running the
program with '-O'.

* reduce() is discouraged; it's almost always more readable to unroll
it in a for loop.

* Are all the methods public, i.e. useful to a client of the classes ?
If not, the convention is to start the non-public methods' name with a
single underscore (or double underscore sometimes, but name mangling
often causes more problems than it solves in my experience, especially
when inheritance is involved).

* Several snippets can be condensed with list comprehensions, though
one-liners are not to everyone's taste. E.g. I'd write
	histograms = []
	maxDice = 10
	for i in xrange(maxDice):
		dice = StoryTellerDice(i)
		histogram = dice.bruteforce()
		histograms.append(histogram)
as histograms = [StoryTellerDice(i).bruteforce() for i in xrange(10)]

* [personal preference]: Don't leave space between *every* operator in
expressions, group them based on precedence. E.g. instead of "(n *
sigmaSq - sigma * sigma) / (n * n)", I read it easier as "(n*sigmaSq -
sigma*sigma) / (n*n).


HTH,
George



From ldo at geek-central.gen.new_zealand  Wed Sep 27 05:02:35 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 21:02:35 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
Message-ID: <efdelg$o1c$4@lust.ihug.co.nz>

In message <Xns984B5837B9F7Aduncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> 
>>     def EscapeSQLWild(Str) :
>>         """escapes MySQL pattern wildcards in Str."""
>>         Result = []
>>         for Ch in str(Str) :
>>             if Ch == "%" or Ch == "_" :
>>                 Result.append("\\")
>>             #end if
>>             Result.append(Ch)
>>         #end for
>>         return "".join(Result)
>>     #end EscapeSQLWild
> 
> That doesn't quite work. If you want to stop wildcards being interpreted
> as such in a string used as a parameter to a query, then you have to
> escape the escape character as well.

That's part of the separation of function. Note that the above function does
not generate a MySQL string literal: you must still put it through the
previously-defined SQLString routine, which will automatically escape all
the specials added by EscapeSQLWild.



From john106henry at hotmail.com  Fri Sep  8 18:51:12 2006
From: john106henry at hotmail.com (John Henry)
Date: 8 Sep 2006 15:51:12 -0700
Subject: Building Python Based Web Application
In-Reply-To: <mailman.183.1157752647.5279.python-list@python.org>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
	<mailman.183.1157752647.5279.python-list@python.org>
Message-ID: <1157755872.665137.230470@m73g2000cwd.googlegroups.com>

Hi folks.

I am interested on this topic as well.

If my application is not database related, what would be a good choice?

I have clients that wish to use my Python applications but I am not
willing to give them the code.  So, I am thinking about setting it up
as a web based application and let them run it from their browser.   If
things go well, may be I can charge them for usage later.

The application will involve getting a data file from the user, do some
processing, and return a result file to the user.   Very modest - to
start.



From daniel.huangfei at gmail.com  Sun Sep 24 04:13:39 2006
From: daniel.huangfei at gmail.com (daniel)
Date: 24 Sep 2006 01:13:39 -0700
Subject: where the hell is the run command of PyPe editor?
Message-ID: <1159085619.069922.238160@i42g2000cwa.googlegroups.com>

I'm trying to use PyPe, but I just got so frustrated when attempting to
run a script, this is the very first feature I would use for an editor,
OMG. I browsed through every single menu item and gave up...

any help would be appreciated,  (the most silly question ever, sounds
like a new computer user. ;--(    )

tks
daniel



From franz.steinhaeusler at gmx.at  Thu Sep 14 08:25:13 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Thu, 14 Sep 2006 14:25:13 +0200
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <48iig2hl4h93vmp70t62gnoslfqkitso64@4ax.com>

On 7 Sep 2006 13:18:22 -0700, "Omar" <outstretchedarm at hotmail.com>
wrote:

>I'd love the perfect editor that would be:
>
>a) free

DrPython and spe; both written in Python and wxPython using SciTe's
control scintilla) and SciTE.

DrPython on:
http://sourceforge.net/projects/drpython/ (Projectpage)
http://drpython.sourceforge.net/ (Homepage)

>
>b) enable me to drag and drop code snippets from a sort of browser into
>the code

DrPython Codemarks plugin.

>
>c) can run programs right from within

DrPython => Program => Run (default F5)

>
>d) can edit
>      - PYTHON
DrPython, spe, SciTE.

>      - Javascript
no definite support.

>      - HTML
DrPython (the others, I don't know)

>      - actionscript (since I'm also learning flash)

Sepy on Sourceforge (also written in Python with wxPython)
http://sourceforge.net/projects/sepy/

>
>e) easy to learn
>

SciTE especially.

>suggestions?



From mccredie at gmail.com  Wed Sep 27 19:32:52 2006
From: mccredie at gmail.com (Matimus)
Date: 27 Sep 2006 16:32:52 -0700
Subject: generator with subfunction calling yield
In-Reply-To: <1159396746.073994.28680@h48g2000cwc.googlegroups.com>
References: <1159396746.073994.28680@h48g2000cwc.googlegroups.com>
Message-ID: <1159399972.888651.291860@h48g2000cwc.googlegroups.com>

The issue is that nn() does not return an iterable object. _nn()
returns an iterable object but nothing is done with it. Either of the
following should work though:

def nn():
    def _nn():
        print 'inside'
        yield 1
    print 'before'
    for i in _nn():
        yield i
    print 'after'

Or you could just return the iterable object that was returned by
_nn():

def nn():
    def _nn():
        print 'inside'
        yield 1
    print 'before'
    retval = _nn():
    print 'after'
    return retval

For clarification, using yeild creates a generator. That generator
returns an iterable object. Nesting generators does not somehow
magically throw the values up the stack. I made the same mistake when I
first started messing with generators too.

-Matt

andy.leszczynski at gmail.com wrote:
> Hi,
>
> I might understand why this does not work, but I am not convinced it
> should not - following:
>
> def nnn():
>     print 'inside'
>     yield 1
>
> def nn():
>     def _nn():
>         print 'inside'
>         yield 1
>
>     print 'before'
>     _nn()
>     print 'after'
>
>
> for i in nnn():
>     print i
>
> for i in nn():
>     print i
>
>
>
> gives results:
>
> $ python f.py
> inside
> 1
> before
> after
> Traceback (most recent call last):
>   File "f.py", line 18, in ?
>     for i in nn():
> TypeError: iteration over non-sequence
>
> while I would expect:
> $ python f.py
> inside
> 1
> before
> inside
> 1
> after
> 
> Any insight?
> 
> andy



From rtw at freenet.co.uk  Wed Sep 27 19:26:29 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Wed, 27 Sep 2006 18:26:29 -0500
Subject: generator with subfunction calling yield
References: <1159396746.073994.28680@h48g2000cwc.googlegroups.com>
Message-ID: <Xns984C49482F12rtwfreenetREMOVEcouk@216.196.109.145>

 wrote in news:1159396746.073994.28680 at h48g2000cwc.googlegroups.com in 
comp.lang.python:

> Any insight?

>From the docs:

<quote>
The yield statement is only used when defining a generator function, and is 
only used in the body of the generator function. Using a yield statement in 
a function definition is sufficient to cause that definition to create a 
generator function instead of a normal function. 
</quote>

Note that its when a function defention contains a yeild statement 
(expression) that the defenition is taken to be a generator function.

> def nn():
> 
>    def _nn():
>        print 'inside'
>        yield 1
>
>    print 'before'
> 
>    _nn()
>    print 'after'

So tha above (nn()) isn't a generator as it doesn't contain a 
yield statement.

Note also that the call to _nn() returns a generator, it isn't a
regular function call.

Here is nn() re-writen to return what you may have originaly expected:

def nn():
    def _nn():
        print 'inside'
        yield 1

    print 'before'

    for i in _nn():
      yield i

    print 'after'

So to forward another generator you need to iterate over it and
yield each element, just as you would for any other iterable.

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From srikrishnamohan at gmail.com  Mon Sep 11 07:35:13 2006
From: srikrishnamohan at gmail.com (km)
Date: Mon, 11 Sep 2006 17:05:13 +0530
Subject: Ann: CoreBio 0.4
In-Reply-To: <1157961570.253884.44940@d34g2000cwd.googlegroups.com>
References: <1157961570.253884.44940@d34g2000cwd.googlegroups.com>
Message-ID: <f4cc03640609110435v48805f37x3dd6c2c62f554bc2@mail.gmail.com>

On 11 Sep 2006 00:59:30 -0700, GavinCrooks at gmail.com
<GavinCrooks at gmail.com> wrote:
>
> Announcing CoreBio 0.4
> ------------------------
> CoreBio home page:
>     http://code.google.com/p/corebio/
>
> Download:
>     http://corebio.googlecode.com/svn/dist/CoreBio-0.4.1.tar.gz
>
> CoreBio is an open source python library for bioinformatics and
> computational biology, designed to be fast, compact, reliable and easy
> to use. Currently, CoreBio includes code to store and manipulate
> protein and DNA sequences, read and write many common biological
> sequence formats, read blast reports and access other computational and
> database resources.
>
> The CoreBio project welcomes additional suggestions, code and
> participants.
>
> This release includes the following modules:
>
>     - data: Standard information used in computational biology.
>     - matrix: Arrays indexed by alphabetic strings.
>     - moremath: Various bits of useful math not in the standard
>
>                 python library.
>     - resource: Access to programs, complex file formats and
>                 databases
>         - astral: ASTRAL dataset IO.
>         - scop: SCOP: Structural Classification of Proteins IO.
>         - stride: STRIDE: Protein secondary structure assignment
>
>                 from atomic coordinates.
>     - seq: Alphabetic sequences and associated tools and data.
>     - seq_io: Sequence file reading and writing.
>         - array_io: Read and write arrays of sequence data.
>         - clustal_io: Read the CLUSTAL sequence file format.
>         - fasta_io: Read and write FASTA format.
>         - genbank_io: Read GenBank flat files.
>         - intelligenetics_io: Read IntelliGenetics format.
>         - msf_io: Read sequence information in MSF format.
>         - nbrf_io: Sequence IO for NBRF/PIR format.
>         - nexus_io: Read the sequence data from a nexus file.
>         - null_io: Null sequence IO.
>         - phylip_io: Read Sequences in interleaved Phylip format.
>         - plain_io: Read and write raw, unformatted sequence data.
>         - stockholm_io: Read a STOCKHOLM format.
>         - table_io: Read  tab delimited format.
>     - ssearch_io: Parse sequence search analysis reports.
>         - blastxml: Read BLAST XML output.
>         - fasta: Read the output of a fasta similarity search.
>     - transform: Transformations of Seqs (alphabetic sequences),
>             including translation with a full suite of
>             GeneticCode's.
>
>
> Gavin Crooks and John Gilman
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From anthra.norell at vtxmail.ch  Tue Sep 12 12:27:41 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Tue, 12 Sep 2006 18:27:41 +0200
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
Message-ID: <4506DFFD.9060200@vtxmail.ch>

Licheng Fang wrote:
> Basically, the problem is this:
>
>   
>>>> p = re.compile("do|dolittle")
>>>> p.match("dolittle").group()
>>>>         
> 'do'
>
> Python's NFA regexp engine trys only the first option, and happily
> rests on that. There's another example:
>
>   
>>>> p = re.compile("one(self)?(selfsufficient)?")
>>>> p.match("oneselfsufficient").group()
>>>>         
> 'oneself'
>
> The Python regular expression engine doesn't exaust all the
> possibilities, but in my application I hope to get the longest possible
> match, starting from a given point.
>
> Is there a way to do this in Python?
>
>   
Licheng,

   If you need regexes, why not just reverse-sort your expressions? This 
seems a lot easier and faster than writing another regex compiler. 
Reverse-sorting places the longer ones ahead of the shorter ones.

 >>> targets = ['be', 'bee', 'been', 'being']
 >>> targets.sort ()
 >>> targets.reverse ()
 >>> regex = '|'.join (targets)
 >>> re.findall (regex, 'Having been a bee in a former life, I don\'t 
mind being what I am and wouldn\'t want to be a bee ever again.')
['been', 'bee', 'being', 'be', 'bee']

You might also take a look at a stream editor I recently came out with: 
http://cheeseshop.python.org/pypi/SE/2.2%20beta

It has been well received, especially by newbies, I believe because it 
is so simple to use and allows very compact coding.

 >>> import SE
 >>> Bee_Editor = SE.SE ('be=BE bee=BEE  been=BEEN being=BEING')
 >>> Bee_Editor ('Having been a bee in a former life, I don\'t mind 
being what I am and wouldn\'t want to be a bee ever again.')

"Having BEEN a BEE in a former life, I don't mind BEING what I am and wouldn't want to BE a BEE ever again."

Because SE works by precedence on length, the targets can be defined in any order and modular theme sets can be spliced freely to form supersets.


>>> SE.SE ('<EAT> be==, bee==,  been==, being==,')(above_sting)
'been,bee,being,be,bee,'

You can do extraction filters, deletion filters, substitutitons in any combination. It does multiple passes and can takes files as input, instead of strings and can output files.

>>> Key_Word_Translator = SE.SE ('''
   "*INT=int substitute"
   "*DECIMAL=decimal substitute"
   "*FACTION=faction substitute"
   "*NUMERALS=numerals substitute"
   # ... etc.
''')

I don't know if that could serve.

Regards

Frederic




From andi.clemens at gmx.net  Sun Sep 17 09:59:54 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Sun, 17 Sep 2006 15:59:54 +0200
Subject: matplotlib: TypeError: a float is required
In-Reply-To: <1158498950.458578.302140@i42g2000cwa.googlegroups.com>
References: <eejesq$guv$1@online.de>
	<1158498950.458578.302140@i42g2000cwa.googlegroups.com>
Message-ID: <eejkba$qqn$1@online.de>

Sorry but english isn't my native language so I don't really get what 
you are trying to tell me, it took me quite a long time to figure out 
what SFA means (I guess it is Sweet Fanny Adams => nothing at all).

All examples were taken from the matplotlib-homepage but they won't work 
on my installation and I don't know why.
You point out that "left and height are Numeric arrays", and that is 
exactly what they are, so what am I missing?

I tried nearly 10 examples from different websites and tutorials and 
none of them worked!
So I don't think I'm doing something wrong, or am I?

Andi

John Machin wrote:
> 
> Call me crazy -- I know SFA about matplotlib -- but I'd expect anything
> scientific to barf if given tuples of integers to play with, and
> following the docs links matplotlib > pylab > bar we find:
> """
> bar(*args, **kwargs)
>     BAR(left, height, width=0.8, bottom=0,
>         color='b', yerr=None, xerr=None, ecolor='k', capsize=3)
>     Make a bar plot with rectangles at
>       left, left+width, 0, height
>     left and height are Numeric arrays.
>     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> """
> 
> Which of us is missing what?
> 
> Cheers,
> John
> 

-- 
homepage: http://www.the-grudge.net
ICQ: 9450091
Skype: thegrudge_2
Mozilla Thunderbird 1.5.0.5
Arch Linux


From aisaac0 at verizon.net  Mon Sep  4 10:40:18 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 04 Sep 2006 14:40:18 GMT
Subject: methods and functions, instances and classes
References: <y%VKg.3084$%k5.2240@trnddc08> <4m2pemF487vvU1@uni-berlin.de>
Message-ID: <mVWKg.1642$m36.820@trnddc02>

> Alan Isaac wrote:
> > When I create an instance of a class,
> > are the class's functions *copied* to create the methods?
> > Or are method calls actually calls of the class's functions?


"Diez B. Roggisch" <deets at nospam.web.de> wrote in message
news:4m2pemF487vvU1 at uni-berlin.de...
> On the class functions. You can make every instance have it's own methods,
> though - but only explicitly.


Could you please elaborate on that last sentence?
Thanks,
Alan Isaac




From deets at nospam.web.de  Thu Sep  7 14:16:52 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 07 Sep 2006 20:16:52 +0200
Subject: Random image downloader for newsgroups (first script)
In-Reply-To: <5lYLg.8769$a9.2590@fe2.news.blueyonder.co.uk>
References: <5lYLg.8769$a9.2590@fe2.news.blueyonder.co.uk>
Message-ID: <4mb60kF5cta3U2@uni-berlin.de>

Kim schrieb:
> SERVER = "news.server.co.uk" #Insert news server here
> GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here

Just why do I imagine there will be an adult newsgroup in the end....?

SCNR,

Diez


From ldo at geek-central.gen.new_zealand  Wed Sep 27 05:32:02 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 21:32:02 +1200
Subject: What's the best way to communicate between processes?
References: <1159346472.574859.64130@i42g2000cwa.googlegroups.com>
Message-ID: <efdgco$so1$1@lust.ihug.co.nz>

In message <1159346472.574859.64130 at i42g2000cwa.googlegroups.com>,
awmcclain.nospam at gmail.com wrote:

> I'm thinking about coding some sort of 'local notify server' in twisted
> (basically just listening to a socket and then passing the information
> to the IM bot), then connecting to it via a python socket in django and
> passing some serialized/pickled data.

That sounds like the right sort of thing. I've done this sort of thing
myself, though I've been careful not to use any language-specific
communication formats.

> I worry about two requests 
> connecting to the 'notify server' at once, though, because i *cannot*
> hang my web server.

Your Web server won't hang. The particular Web server thread/process waiting
for the request to be serviced will be held up, and so of course will the
particular user sitting in front of the browser waiting for a response from
that thread/process, but nobody else will notice anything.


From mensanator at aol.com  Tue Sep 12 16:15:50 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 13:15:50 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.390.1158090786.5279.python-list@python.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<1158078714.772319.52690@i42g2000cwa.googlegroups.com>
	<mailman.375.1158080942.5279.python-list@python.org>
	<1158083242.566897.180710@h48g2000cwc.googlegroups.com>
	<mailman.390.1158090786.5279.python-list@python.org>
Message-ID: <1158092150.379895.77400@d34g2000cwd.googlegroups.com>


Mike Owens wrote:
> On 12 Sep 2006 10:47:22 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
>
> > Why? I'm not requesting that dynamic typing be removed from
> > sqlite. I'm not even requesting that the slander in the sqlite docs
> > be removed. What I'm requesting is that these "features" of
> > sqlite be better presented in the Python docs, hence, no posting
> > to the sqlite list. Is that so hard to figure out?
> >
> > > Apparently,
> > > you are too afraid to insult the SQLite community to its face, and
> > > seek refuge on the Python list.
> >
> > I'm sure the sqlite community could care less about what appears
> > in the Python documentation.
>
> As a member of the SQLite community, your publicly denouncing SQLite
> as "f***ing goofy", and it's creator as a crackpot, liar, and
> slanderer, concerns at least me.

<quote>
And the whole bug in the SQL standard, if you can't
tell, is called humor.
</quote>

> And I would say that these comments
> have no relation to what appears in the Python documentation.
>
> In any case, I am thankful for these comments, as they speak volumes
> about you. So much so, in fact, that I think neither you nor they pose
> any real danger of being taken seriously by anyone new to Python or
> SQLite. That being the case, I needn't continue with you.

See you in another life.

>
> If you ever want to have a constructive discussion about SQLite or any
> of its features, or just need some general advice, please feel free to
> join the mailing list. There are a lot of friendly people who would be
> glad to help you out or consider to your suggestions.

I'll use a different pseudonym.

> 
> Cheers.



From mensanator at aol.com  Mon Sep 11 21:23:50 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 11 Sep 2006 18:23:50 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
Message-ID: <1158024230.139214.197070@e3g2000cwe.googlegroups.com>


Mike Owens wrote:
> On 9/11/06, Steve Holden <steve at holdenweb.com> wrote:
>
> > Sure. But if you go back to the start of the thread you'll remember the
> > OP was originally complaining that SQLite was being promoted in the
> > Python docs as SQL compliant.
>
> Define "SQL compliant." That's about as technically precise as saying
> that something tastes like chicken.

Can you run your car on diesel fuel?

Why not?

Because your car's specification says to use gasoline?

If your car has been designed to run on diesel, you shouldn't
be saying it has gasoline engine. Duh.

>
> Furthermore, I'm not responding to Python's representation of one
> thing or another. I am responding to some of the ridiculous and unfair
> criticisms directed at SQLite. Whatever Python did or didn't do, or
> whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
> drug through the mud.

Sure it does.

>From SQLite Homepage
  documentation
    Available Documentation
      Distinctive Features

<quote *emphasis added*>
This page highlights some of the characteristics of SQLite
that are unusual and which make SQLite different from many
other SQL database engines.

Manifest typing

Most SQL database engines use static typing. A datatype is
associated with each column in a table and only values of
that particular datatype are allowed to be stored in that
column. SQLite relaxes this restriction by using manifest
typing.

In manifest typing, the datatype is a property of the
value itself, not of the column in which the value is
stored. SQLite thus allows the user to store any value
of any datatype into any column regardless of the declared
type of that column. (There are some exceptions to this
rule: An INTEGER PRIMARY KEY column may only store
integers. And SQLite attempts to coerce values into the
declared datatype of the column when it can.)

***********************************************************
* The SQL language specification calls for static typing. *
***********************************************************

So some people feel that the use of manifest typing is a
bug in SQLite. But the authors of SQLite feel very
strongly that this is a feature.

**********************************************************
* The authors argue that static typing is a bug in the   *
* SQL specification that SQLite has fixed in a backwards *
* compatible way.                                        *
**********************************************************
</quote>

A spcification cannot be a bug (unless it is inconsistent
with other specifications). An implementation can be,
but a specification cannot.

>
> > You shouldn't need to
> > add check constraints to verify that the value stored in an integer
> > column is actually an integer.
>
> You should if your using SQLite, and this is clearly documented:
> http://www.sqlite.org/datatype3.html.
>
> > I don't think anyone is trying to suggest that SQLite isn't a prefectly
> > good tool for many purposes: it's far more sophisticated than bsddb, for
> > example, and I've used both it and Gadfly (which has similar
> > deficiencies when compared to strict standards) with complete satisfaction.
>
> Then what does calling it crappy and goofy suggest?

It suggests that the SQLite author is a crackpot.



From pink at odahoda.de  Mon Sep 18 16:10:59 2006
From: pink at odahoda.de (Benjamin Niemann)
Date: Mon, 18 Sep 2006 22:10:59 +0200
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
Message-ID: <eemugl$h5v$1@online.de>

beliavsky at aol.com wrote:

> I think I read a suggestion somewhere to wrap the code where a Python
> script starts in a main() function, so one has
> 
> def main():
>     print "hi"
> 
> main()
> 
> instead of
> 
> print "hi"
> 
> What are the advantages of doing this?

Refine this to:

def main():
    print "hi"

if __name__ == "__main__":
    main()

The advantage of the 'if __name__ ..' statement is that you can import the
script without running the 'main' code, e.g. from your unittest module.

Wrapping the main code in a function allows you to call this function from
your unittests and test it like any other function.

Additionally I do usually add an 'argv' argument to main() which I use
instead of sys.argv, so I can easily test it with different arguments.

-- 
Benjamin Niemann
Email: pink at odahoda dot de
WWW: http://pink.odahoda.de/


From grflanagan at yahoo.co.uk  Sat Sep 23 14:42:27 2006
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: 23 Sep 2006 11:42:27 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159035610.860068.14330@m7g2000cwm.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
	<1159034690.382602.256590@m7g2000cwm.googlegroups.com>
	<1159035610.860068.14330@m7g2000cwm.googlegroups.com>
Message-ID: <1159036947.067545.141200@m7g2000cwm.googlegroups.com>


volcano wrote:
> Gerard Flanagan wrote:
> > volcano wrote:
> > > Hello, folks!
> > > A trivial question - I have a working Python script that I have to
> > > invoke from C++ code. No fancy stuff - just run the whole script with
> > > its parameters. No callbacks, no signalling - nada, just
> > > stupid,primitive, straightforward call.
> > >
> > > And while there is a lot of help on embedding, I could not find out how
> > > to run script as a whole.SOS!!!!
> >
> > In C#:
> >
> > http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=st&q=&rnum=4#197b6a89095ef930
> >
> > hth
> >
> > Gerard
>
> Thanks for fast response, alas - it did not!
> My problem is - application in C++ used to use external application,
> which does not work well. So I sort of reproduced the functionality in
> Python script, but now I am stuck, unable to run it properly.

Maybe my understanding is wrong, but can't managed (.NET) C++ call into
any other managed assembly, in this case (I think) System.Diagnostics?

Gerard



From onurb at xiludom.gro  Fri Sep 22 05:44:46 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 22 Sep 2006 11:44:46 +0200
Subject: Can I inherit member variables?
In-Reply-To: <mailman.430.1158878314.10491.python-list@python.org>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>	<eetnu9$gj7$1@online.de>	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>	<mailman.400.1158835802.10491.python-list@python.org>	<45128244$0$641$636a55ce@news.free.fr>
	<mailman.430.1158878314.10491.python-list@python.org>
Message-ID: <4513b08f$0$612$636a55ce@news.free.fr>

Gabriel Genellina wrote:
> At Thursday 21/9/2006 09:14, Bruno Desthuilliers wrote:
> 
>> > When you construct an object instance, it is of a certain type from
>> that
>> > precise moment, and you can't change that afterwards.
>>
>> Err... Actually, in Python, you can. It's even a no-brainer.
> 
> Yes, but trying to explain that to a beginner would just make things
> worse...

Agreed. But this newsgroup is not only read by beginners, and the last
part of your statement happens to be false. The first part is ok, and
would have been enough IMHO.

> You must grab the inheritance concept first.

Mmm... It's clear that the OP didn't get the concept right...

OTHO, inheritance (not subtyping...) is a very overrated concept IMHO
and really not central to OO - at least with dynamically typed languages
(or using type inference). It's in fact nothing more than a special case
of composition/delegation. What's really important here is polymorphic
dispatch, which shouldn't (and, in Python, doesn't) rely on
implementation inheritance.

I really think that insisting on implementation inheritance is the wrong
way to teach OO. But I may not be a good teacher !-)


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From NoelByron at gmx.net  Wed Sep  6 09:52:15 2006
From: NoelByron at gmx.net (NoelByron at gmx.net)
Date: 6 Sep 2006 06:52:15 -0700
Subject: IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <1157550735.346289.234930@e3g2000cwe.googlegroups.com>

Great, I couldn't do better.... Ok, I couldn't do it all...
;o)

But I'm a little bit concerned. Have you ever thought of using a
different file prefix for python files depending on .NET assemblies
like .pyi? Sooner or later we want to associate IronPython files with
IronPython in the windows shell. Don't get me wrong, I really
appreciate your effort of bringing Python to .NET. But I fear a lof of
users could be disappointed if they start a IronPython file with
CPython and vice versa.

Just my ?0.05,
Noel



From vegan16 at accesscomm.ca  Sun Sep 17 12:21:47 2006
From: vegan16 at accesscomm.ca (malibu)
Date: 17 Sep 2006 09:21:47 -0700
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of
	Zion
In-Reply-To: <1158503419.301412.70290@i42g2000cwa.googlegroups.com>
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
	<1158503419.301412.70290@i42g2000cwa.googlegroups.com>
Message-ID: <1158510107.577987.270340@d34g2000cwd.googlegroups.com>


tadchem wrote:
> "Protocols of the Elders of Zion" was a fraud
> http://en.wikipedia.org/wiki/The_Protocols_of_the_Elders_of_Zion
> http://ddickerson.igc.org/protocols.html
> http://www.straightdope.com/mailbag/mzionprotocol.html
> http://www.museumofhoaxes.com/hoaxorum/hoaxorum1869.html
>
> The fraud was proven by identifying the sources used by the plagiarist
> in 1921, but there are *still* those who believe it because it
> justifies their racial hatred.
>
> Of course, like the 'Protocols', the 9/11 conspiracy hoax will be
> embraced by those whose will to believe something that justifies their
> irrational prejuduces exceeds their will to understand the implications
> of rational data.
>
> As can be expected, there is a lot of overlap between the hateful
> racists of the antisemitic groups and the delusional paranoids involved
> in the 9/11 conspiracy theories.
>
> Tom Davidson
> Richmond, VA

There were many people who reported
numerous explosions in the WTC buildings.
When the firefighters arrived all the ground
floor windows had been blown out.
There were explosions in the sub-basement floors
as reported by severely-injured caretakers who
came up from there and by
firefighters on the scene.

Seismic records substantiate these claims.

Isn't 'delusional paranoia' a little less
substantive than that?

Maybe you should actually *look*
at the data- I know as a physicist you've kinda
gotten away from that mindset.

John



From python.sam at googlemail.com  Wed Sep 20 19:26:08 2006
From: python.sam at googlemail.com (sam)
Date: 20 Sep 2006 16:26:08 -0700
Subject: "list index out of range" error
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
	<pan.2006.09.20.21.54.45.550086@gmx.net>
	<1158789483.004773.21840@k70g2000cwa.googlegroups.com>
	<1158791972.525026.113530@i3g2000cwc.googlegroups.com>
	<mailman.359.1158793790.10491.python-list@python.org>
Message-ID: <1158794768.776317.144060@k70g2000cwa.googlegroups.com>

gabriel,

> Now that your main problem is gone, just a few comments:
> - python lists know their length, so you don't need explicit no_lines
> and no_lines_2
> - list_initial.remove(temp_str) is fairly slow - it has to *scan* the
> list to locate temp_str. Just keep its index instead, and use del
> list_initial[index]

i will try rewriting it in that manner and comparing the times. i have
no feel so far for the relative speeds of different ways of doing
things, but i can see the importance of it.

> - as a general sorting routine, that 'zzz....' does not look very
> good, try to avoid it.

yes, it's hideous even to a novice. however, i need to go to bed now,
and if i hadn't got this to work before bed, i'd never get to sleep!
i'll have to mull it over and come up with something more elegant.


ben,

i used to work for a company where we exchanged a lot of e-mails, and
the titles were always 're: your e-mail', or 'project stuff', or 'file
for client' or suchlike. made it kind of difficult to find anything.
figured a similar principle might apply here... ; )

thanks again all,

sam



From my.chat.friends at gmail.com  Sun Sep 17 11:23:42 2006
From: my.chat.friends at gmail.com (my.chat.friends at gmail.com)
Date: 17 Sep 2006 08:23:42 -0700
Subject: Computer Vitals - Your Online Computer Helpline
Message-ID: <1158506622.356573.35140@b28g2000cwb.googlegroups.com>

http://computervitals.com

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From fperez.net at gmail.com  Wed Sep  6 01:22:52 2006
From: fperez.net at gmail.com (Fernando Perez)
Date: Tue, 05 Sep 2006 23:22:52 -0600
Subject: unit testing failure makes no sense
References: <D456DC6D-75FF-4B86-AC97-F16D56EDCD94@mac.com>
Message-ID: <edllt5$3ur$1@sea.gmane.org>

listservs at mac.com wrote:

> I have some unit testing code in one of my modules that appears to
> run without an error, but the unit test fails anyhow. Have a look at
> the output below -- the TestResult seems to have no errors and no
> failures, yet I get a system exit.

unittest.main() ALWAYS raises system exit:

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/ 
unittest.py in runTests(self=<unittest.TestProgram object at 0x10ee670>)
     795             self.testRunner = TextTestRunner 
(verbosity=self.verbosity)
     796         result = self.testRunner.run(self.test)
--> 797         sys.exit(not result.wasSuccessful())
         global sys.exit = <built-in function exit>
         result.wasSuccessful = <bound method  
_TextTestResult.wasSuccessful of <unittest._TextTestResult run=3  
errors=0 failures=0>>
     798
     799 main = TestProgram

You normally don't see it b/c the python interpeter doesn't flag SystemExits
at the very end (I'm not sure of the details there).

For this very reason, ipython's run magic has a -e flag, which makes it
ignore SystemExit exceptions, and lets you run your unit tests from within
ipython in peace.

Next time, ask this one on the ipython list: it was a pure accident that I
caught it, I have unfortunately no time left for c.l.py these days.

Regards,

f



From ldo at geek-central.gen.new_zealand  Thu Sep 28 21:12:58 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 13:12:58 +1200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
Message-ID: <efhrsv$oep$1@lust.ihug.co.nz>

In message <efhril$nrm$1 at lust.ihug.co.nz>, I wrote:

>     "".join([["0", "1"][(1 << i & n) != 0] for i in range(int(math.ceil(math.log(n, 2))) - 1, -1, -1)])

Uh, make that

    "".join([["0", "1"][(1 << i & n) != 0] for i in range(int(math.floor(math.log(n, 2))), -1, -1)])

Need to check those corner cases. :)


From dhable at gmail.com  Fri Sep 22 18:20:11 2006
From: dhable at gmail.com (dhable at gmail.com)
Date: 22 Sep 2006 15:20:11 -0700
Subject: Best practice for large source code projects
Message-ID: <1158963611.189319.148700@i42g2000cwa.googlegroups.com>

I'm developing a web system and based on some patterns I've seen
elsewhere, I made a single  file (model.py) to hold all of the
functions and classes that define the model porition of the
application. Hence the code in the controller looks like:

import model

def Display(req,id):
  # ....


It works and things make sense to me. Yet, I feel uneasy that my
model.py file is starting to approach 500 lines. What's the best
practice or community opinion on this? Do I keep everything in a single
file or do I start dividing things into separate files?

TIA



From sjmachin at lexicon.net  Sat Sep 23 09:04:37 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 06:04:37 -0700
Subject: QuoteSQL
In-Reply-To: <ef38i2$6tb$2@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>
Message-ID: <1159016677.214602.305270@k70g2000cwa.googlegroups.com>


Lawrence D'Oliveiro wrote:
> Why doesn't MySQLdb provide a function like this:

Because the author has read PEP 8?



From fujimoto at sakushin-u.ac.jp  Sat Sep 30 08:29:20 2006
From: fujimoto at sakushin-u.ac.jp (kazuo fujimoto)
Date: Sat, 30 Sep 2006 21:29:20 +0900
Subject: Typing UTF-8 characters in IDLE
Message-ID: <20060930212154.C1D1.FUJIMOTO@sakushin-u.ac.jp>

Ricky,

I found your message now, because I also would encounter the same
problem.


> A few unicode tutorials on the web show that it's possible to type
> unicode characters into the IDLE gui...
> 
> However, when i type korean (hangul) characters it complains:
> 
> Unsupported Characters in input
> 
> I don't have a great understanding of unicode, but when I use a UTF-8
> source file with korean strings in, and run it as a CGI script it
> works fine.
> 
> I'm using python 2.3.3 on win XP.
> 
> Any tutorials / info anyone could point me to? Thanks...

Now I am using Hangle with Japaese. 

What I did is as follow.

My Python is now 2.4.3

1) open the IOBinding.py in $python/idellib
2) see the block just after line35, and insert one line.
----
encoding = "ascii"                                       # line 35
if sys.platform == 'win32':
    # On Windows, we could use "mbcs". However, to give the user
    # a portable encoding name, we need to find the code page
    try:
        encoding = locale.getdefaultlocale()[1]
        codecs.lookup(encoding)
    except LookupError:
        pass
    encoding = 'utf-8' ## <- this line force the encoding to utf-8.
-----
3) save the file and quit Idle and reopen Idle.

I hope my experience will solve your problem.

(It has passed 2 years and more, so you might already solve the problem.
I you know better solution, please inform me.)

kazuo



From mhodkin at comcast.net  Wed Sep  6 08:49:31 2006
From: mhodkin at comcast.net (mhodkin at comcast.net)
Date: 6 Sep 2006 05:49:31 -0700
Subject: running script in pyalamode
Message-ID: <1157546971.189577.143060@m73g2000cwd.googlegroups.com>

Is there a way to run a script within the editor of pyalamode?  Or does
one need to open and run the saved .py file?



From sjdevnull at yahoo.com  Tue Sep  5 13:11:38 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 5 Sep 2006 10:11:38 -0700
Subject: threading support in python
In-Reply-To: <hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
	<hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
Message-ID: <1157476298.716537.109330@h48g2000cwc.googlegroups.com>

Bryan Olson wrote:
> I think it's even worse. The standard Python library offers
> shared memory, but not cross-process locks.

File locks are supported by the standard library (at least on Unix,
I've not tried on Windows).  They work cross-process and are a normal
method of interprocess locking even in C code.



From sbassi at gmail.com  Fri Sep  1 22:43:23 2006
From: sbassi at gmail.com (Sebastian Bassi)
Date: Fri, 1 Sep 2006 23:43:23 -0300
Subject: Timeline for Python?
In-Reply-To: <1157097423.946429.261370@p79g2000cwp.googlegroups.com>
References: <mailman.10185.1157035875.27775.python-list@python.org>
	<1157097423.946429.261370@p79g2000cwp.googlegroups.com>
Message-ID: <b43bf2080609011943n79958cfcl937833330b71a363@mail.gmail.com>

On 1 Sep 2006 00:57:04 -0700, crystalattice <crystalattice at gmail.com> wrote:
> I'd write for 2.4, even though 2.5 should be coming out "shortly".
> There aren't many significant changes to the whole language between 2.4
> and 2.5.  Probably the best thing is write for 2.4 and have a sidenote
> stating where 2.5 operates differently.
> The Python 3 timeline is almost a moving target right now; personally,
> I don't think it will be out before next winter.  Maybe a beta but I
> doubt the full version.

Maybe I forgot to tell, but its going to take me at least 6 month to
finish the book, then there is a proofreading stage with the publisher
and then the release, so it will take about 1 year (about end of
2007), that is why I am thinking in 2.5 and 3.
What do you think about it?

-- 
Bioinformatics news: http://www.bioinformatica.info
Lriser: http://www.linspire.com/lraiser_success.php?serial=318


From cephire at gmail.com  Mon Sep  4 14:21:15 2006
From: cephire at gmail.com (Joseph)
Date: 4 Sep 2006 11:21:15 -0700
Subject: Web queries in Python
Message-ID: <1157394075.480663.97840@p79g2000cwp.googlegroups.com>

Hi,
Excel uses web queries to read data (like financial/weather data) from
web. How to do the same in python? Even pointers to such would be of
help.

Thank you,
Joseph



From irmen.NOSPAM at xs4all.nl  Wed Sep 20 19:51:04 2006
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Thu, 21 Sep 2006 01:51:04 +0200
Subject: new string method in 2.5 (partition)
In-Reply-To: <mailman.354.1158791333.10491.python-list@python.org>
References: <40XPg.6$1n3.149@news.tufts.edu>	<4510425e$0$12250$636a55ce@news.free.fr>	<mailman.299.1158709371.10491.python-list@python.org>	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
	<mailman.354.1158791333.10491.python-list@python.org>
Message-ID: <4511d3f1$0$4515$e4fe514c@news.xs4all.nl>

Gabriel Genellina wrote:

> Nope, a python string has both a length *and* a null terminator (for 
> ease of interfacing C routines, I guess) so you can't just share a 
> substring.

Ofcourse, that makes perfect sense. Should have thought a little
bit further myself .... :)

--Irmen


From tjreedy at udel.edu  Tue Sep  5 14:12:10 2006
From: tjreedy at udel.edu (tjreedy)
Date: Tue, 5 Sep 2006 20:12:10 +0200
Subject: Programming isn't dangerous...
References: <edke6v$lpk$1@panix3.panix.com>
Message-ID: <edkelt$no1$1@sea.gmane.org>


"Aahz" <aahz at pythoncraft.com> wrote in message 
news:edke6v$lpk$1 at panix3.panix.com...
> http://www.sfgate.com/cgi-bin/article.cgi?file=/news/archive/2006/09/05/national/a082618D20.DTL

He should have been practicing pair pet care ;-)
tjr





From python.list at tim.thechases.com  Fri Sep  8 22:02:54 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 08 Sep 2006 21:02:54 -0500
Subject: best split tokens?
In-Reply-To: <1157756531.475390.100210@b28g2000cwb.googlegroups.com>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>	<mailman.182.1157751737.5279.python-list@python.org>
	<1157756531.475390.100210@b28g2000cwb.googlegroups.com>
Message-ID: <450220CE.8040907@tim.thechases.com>

>> 	rgx = re.compile('\W+')
>>
>> if you don't mind numbers included you text (in the event you
>> have things like "fatal1ty", "thing2", or "pdf2txt") which is
>> often the case...they should be considered part of the word.
>>
>> If that's a problem, you should be able to use
>>
>> 	rgx = re.compile('[^a-zA-Z]+')
>>
>> This is a bit Euro-centric...
> 
> I'd call it half-asscii :-)

groan... :)

Given the link you provided, I correct my statement to 
"Ango-centric", as there are clearly oddball cases in languages 
such as French.

> textbox = "He was wont to be alarmed/amused by answers that won't work"

Well, one could do something like

 >>> s
"He was wont to be alarmed/amused by answers that won't work"
 >>> s2
"The two-faced liar--a real joker--can't tell the truth"
 >>> r = re.compile("(?:(?:[a-zA-Z][-'][a-zA-Z])|[a-zA-Z])+")
 >>> r.findall(s), r.findall(s2)
(['He', 'was', 'wont', 'to', 'be', 'alarmed', 'amused', 'by', 
'answers', 'that', "won't", 'work'], ['The', 'two-faced', 'liar', 
'a', 'real', 'joker', "can't", 'tell', 'the', 'truth'])


which parses your example the way I would want it to be parsed, 
and handles the strange string I came up with to try similar 
examples the way I would expect that it would be broken down by 
"words"...

I had a hard time comin' up with any words I'd want to call 
"words" where the additional non-word glyph (apostrophe, dash, 
etc) wasn't 'round the middle of the word. :)

Any more crazy examples? :)

-tkc





From kent at kentsjohnson.com  Mon Sep 11 07:48:39 2006
From: kent at kentsjohnson.com (Kent Johnson)
Date: Mon, 11 Sep 2006 11:48:39 GMT
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.238.1157947719.5279.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>	<mailman.223.1157856559.5279.python-list@python.org>	<4g%Mg.770$5i7.457@newsreading01.news.tds.net>	<mailman.235.1157932438.5279.python-list@python.org>	<J_2Ng.785$5i7.332@newsreading01.news.tds.net>
	<mailman.238.1157947719.5279.python-list@python.org>
Message-ID: <r2cNg.792$5i7.183@newsreading01.news.tds.net>

Dick Moores wrote:
> At 06:30 PM 9/10/2006, Kent Johnson wrote:
>> Dick Moores wrote:
>>> Also, why do you use TextPad instead of IDLE?
>> You're kidding, right?
> 
> No. Tell me, please. Macros? Comparing files? What else?

OK...please, no one interpret this as IDLE bashing or attempt to show me 
a better way. I'm happy with TextPad and just writing this because I was 
asked...

In my opinion:

- Most of my Python work is actually in Jython. I can run a Jython 
program with a tool in TP. Actually I have separate tools for each 
active project that set the correct working directory and invoke a batch 
file with the right jars. Can't do that in IDLE.

- TextPad is a good general-purpose editor, not just for Python. All the 
following reasons really come under this heading. I have an editor I 
like, it works great for Python, there is really no reason to use IDLE.

- Fast and powerful multi-file search (easily specify the directory and 
file types to search)

- Syntax highlighting for XML, HTML, Velocity templates, Ruby, Java, 
JavaScript, R, SQL, CSS...all file types I use more or less frequently.

- Word wrap

- Show invisibles

- Customizable with macros and external tools

- Open as binary

etc...

Kent


From http  Mon Sep 18 17:40:03 2006
From: http (Paul Rubin)
Date: 18 Sep 2006 14:40:03 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
References: <mailman.232.1158591996.10491.python-list@python.org>
	<1158602663.906546.246970@h48g2000cwc.googlegroups.com>
	<1158605612.814018.110830@m7g2000cwm.googlegroups.com>
Message-ID: <7xac4wx39o.fsf@ruckus.brouhaha.com>

bearophileHUGS at lycos.com writes:
> With Python you can't win, because Perl and Ruby allow for shorter
> programs.

Python has native bignums, which should simplify a program like this
enormously.  I don't know if Ruby has them.  Perl doesn't, and if you
use some CPAN library that simulates them, that should count as part
of your program size.


From tenax.raccoon at gmail.com  Wed Sep  6 17:36:34 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 6 Sep 2006 14:36:34 -0700
Subject: python vs java
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
	<44fedfd2$0$32654$626a54ce@news.free.fr>
Message-ID: <1157578594.300005.47550@e3g2000cwe.googlegroups.com>

Bruno Desthuilliers wrote:
> With a GUI ? If so, you probably want to check out wxPython or PyGTK
> (wxPython will also buy you MacOS X IIRC, and wil perhaps be easier to
> install on Windows).

Just a warning: wxPython does operate slightly differently between Mac
OS X, Linux, and Windows.  The differences are usually minor and easy
to clean up in a cross-platform manner, but be aware that you need to
test on all platforms that you're going to release on.

For example, MDI apps are anthema to Linux's GTK, so wxGTK uses a
tabbed dialog to approximate the same thing.  While Mac OS X can
associate a Python object (in my case, None) with a hidden top-level
tree control node, Windows will throw a C++ assertion.

If you are used to using MFC, wxWidgets (which wxPython uses) provides
a very MFC'ish programming experience.  It's pretty decent, and the
wxPython demo provides lots of neat interactive examples.

    --Jason



From remi at cherrypy.org  Wed Sep 20 17:47:41 2006
From: remi at cherrypy.org (remi at cherrypy.org)
Date: 20 Sep 2006 14:47:41 -0700
Subject: Python-2.5 available at WebFaction
In-Reply-To: <4VgQg.309$4B3.10@tornado.texas.rr.com>
References: <1158767384.591334.91670@k70g2000cwa.googlegroups.com>
	<4VgQg.309$4B3.10@tornado.texas.rr.com>
Message-ID: <1158788861.759024.189520@e3g2000cwe.googlegroups.com>


Paul McGuire wrote:
> <remi at cherrypy.org> wrote in message
> news:1158767384.591334.91670 at k70g2000cwa.googlegroups.com...
> > Hello everyone,
> >
> > I'm happy to announce that WebFaction have now installed Python-2.5
> > on all their servers.
> >
> > WebFaction (formerly Python-Hosting.com) support all the
> > major Python web frameworks (Django, TurboGears, CherryPy,
> > mod_python, Pylons, web.py, ...)
> >
> > People using Python CGI or Python-2.5-compatible application servers
> > will be able to use all the new features of Python-2.5 for their
> > website.
> >
> > Remi
> >
> > http://www.webfaction.com - Hosting for an agile web
> >
>
> Is this available for all of your hosting plans, including your lowest cost
> plan?

Python CGI is. Web frameworks that require a long-running process (such
as Django, TurboGears, ...) are available on our "Shared 2" plan and
above.

Remi.



From acquiesce11 at yahoo.com.au  Sun Sep 17 09:56:08 2006
From: acquiesce11 at yahoo.com.au (Fransiska M Argasetya)
Date: Sun, 17 Sep 2006 23:56:08 +1000 (EST)
Subject: multiping + while loop + excel
Message-ID: <20060917135609.83330.qmail@web54707.mail.yahoo.com>

dear everyone
   
  please help me with my coding dilemma o_O
   
  i have a python code that can ping several sites as shown below:
   
  =====================================================
  =====================================================
   
  import threading
import os
import Queue
import time
from time import sleep
   
  def showResponse(args):
    """Pretty prints passed tuple to stdout"""
      ip, stdoutLi, threadName = args
    print '%s \t\t\t\t\t\n' % (ip)
      for line in stdoutLi:
        line = line.strip()
        if not line: continue
        print '\t' + line
    print '-'*72
  class Pinger(threading.Thread):
      def __init__(self, host, queue):
        threading.Thread.__init__(self)
        self.__host = host
        self.__queue = queue
        self.setDaemon(1)
      def run(self):
        pingCmd = "ping -n 1 -w 1000 " + self.__host
        childStdout = os.popen(pingCmd)
        result = (self.__host, childStdout.readlines(), self.getName())
        childStdout.close()
        self.__queue.put(result)
  
if __name__ == '__main__':
    
    hostLi = ['yahoo.co.uk','google.com','wikipedia.org'] # read from the list
      q = Queue.Queue()
      startA = time.time()
    for host in hostLi:
        """Create and start all necessary threads, passing results
        back via thread safe Queue instance.
        """
      
        Pinger(host,q).start()
      i = len(hostLi) # counts the length of hostLi
        
    while i > 0:
        showResponse(q.get())
        i -= 1

  =====================================================
  =====================================================
   
  i would like to develop it more with the following requirements:
   
  1). i want to make the code to read the list of websites from another file (be it a .txt or .xls)
  2). i want the results of the pings to be displayed in another file, where i can manipulate those figures later on for research purposes
  3). if number (2) is achieved, i want the code to run every 60 minutes so i can make a statistic with those values, i.e. pinging to site A has less delay during the day compare to during night time or something like that
   
  i have several ideas of my own but they dont seem to work:
  1). hostLi = open("ipaddress.txt")  # ipaddress.txt is the list of websites
     for line in hostLi.readlines():
          print line
     hostLi.close()
    
       OR
   
       f = open("ipaddress.txt")
     while 1:
          line = f.readline()
          if not line: break
               hostLi(line)
     f.close()
  2). myoutfile = showResponse(q.get()) # write this result to the file
     theoutfile = open ("myout.txt","w") # open the file to write (w)
     for item in myoutfile:  # write out the contents
          theoutfile.write (item)
       theoutfile.close()
  3). while i > 0:
        showResponse(q.get())
        i -= 1
    while 1:
        time.sleep(3600)  # 60 minutes = 3600 seconds
   
  thank you very much for anyone who can help me out with these issues
   
  really appreciate it a lot!

 		
---------------------------------
On Yahoo!7 
  Answers: 25 million answers and counting. Learn something new today
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From george.sakkis at gmail.com  Sat Sep 23 23:55:12 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 23 Sep 2006 20:55:12 -0700
Subject: returning None instead of value: how to fix?
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
	<1158956835.466475.162860@i42g2000cwa.googlegroups.com>
	<1158958798.273728.3620@m7g2000cwm.googlegroups.com>
	<sN1Rg.1204$5i7.700@newsreading01.news.tds.net>
Message-ID: <1159070112.102051.75960@m73g2000cwd.googlegroups.com>

Neil Cerutti wrote:

> It's not out of the kindness of our hearts that we help. Heck, I
> don't know what it is. Probably I just like reading my own drivel
> on the internet and occassionally helping others is a good
> excuse.

Weird, isn't it ? Good to know that it's not just me that thinks this
way.

Best,
George



From __peter__ at web.de  Sun Sep  3 12:09:55 2006
From: __peter__ at web.de (Peter Otten)
Date: Sun, 03 Sep 2006 18:09:55 +0200
Subject: regex matching rst code block?
References: <plCKg.1977$uv4.1386@newsfe02.lga>
Message-ID: <edeunf$lai$02$1@news.t-online.com>

Edward K. Ream wrote:

> Here is a little regular expression puzzle.  I wish a regex that matches
> an rst code block, that is,

> '::' followed by a group of lines all indented by at least as much as the
> first non-blank line following the '::'
 
> My guess is that this is not possible.  Can anyone prove me wrong :-)

Try

r"(::\s*\n(\s*\n)*((\s+).*?\n)(((\4).*?\n)|(\s*\n))*)"

Probably buggy and too complicated, but you didn't post a good test suite...

Peter



From jantod at gmail.com  Sat Sep 16 06:55:25 2006
From: jantod at gmail.com (Janto Dreijer)
Date: 16 Sep 2006 03:55:25 -0700
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<12glelm8a37tp63@corp.supernews.com>
	<1158332322.661048.38360@b28g2000cwb.googlegroups.com>
	<mailman.144.1158345079.10491.python-list@python.org>
Message-ID: <1158404125.762979.75880@h48g2000cwc.googlegroups.com>

Steve Holden wrote:
> Note that TCP and UDP port spaces are disjoint, so there's no way for
> TCP and UDP to use "the same port" - they can, however, use the same
> port number. Basically the TCP and UDP spaces have nothing to do with
> each other.
>
> Most dynamic NAT gateways will respond to an outgoing UDP datagram by
> mapping the internal client's UDP port to a UDP port on the NAT
> gateway's external interface, and setting a converse mapping that will
> allow the server to respond, even though technically there isn't a
> "connection". The NAT table entries will typically be timed out after a
> short period of non-use.

So are you saying one can't use TCP to punch a hole for UDP?



From paddy3118 at netscape.net  Tue Sep  5 06:59:06 2006
From: paddy3118 at netscape.net (Paddy)
Date: 5 Sep 2006 03:59:06 -0700
Subject: why have to "from compiler import *"
In-Reply-To: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
References: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
Message-ID: <1157453946.756864.231500@m79g2000cwm.googlegroups.com>

mark_galeck_spam_magnet at yahoo.com wrote:
> Hi,  why does
>
> >>> import compiler
> >>> compileFile("foo.py")
>
> complain name 'compileFile' not defined.  But
>
> >>>from compiler import *
>
> works.  Why?  (I did read the tutorial, it seems to say "import module"
> should work.
>
> Thank you,  Mark

I did some ascii art to show what happenss to your namespace as you
import from a module in a few ways. (You'll need to view this in a
NON-proportional font).

You say you've read the docs at: http://docs.python.org/tut/node8.html
or http://docs.python.org/ref/import.html

Heres my 'art':



 module1.py:
    O-----------------O
    |moduleFunc1      |
    |moduleClass1     |
    |  class1Method1  |
    |  class1Method2  |
    |moduleFunc2      |
    |moduleVar1       |
    |moduleVar2       |
    O-----------------O

 # Empty namespace:
   \-----------------/
   |                |
   |                |
   |                |
   |                |
   |                |
   |                |
   |                |
   /-----------------\


 import module1
 # namespace becomes:
   \-------------------------/
   |module1.moduleFunc1     |
   |module1.moduleClass1:   |
   |  class1Method1         |
   |  class1Method2         |
   |module1.moduleFunc2     |
   |module1.moduleVar1      |
   |module1.moduleVar2      |
   /------------------------\

 from module1 import *
 # namespace becomes:
   \-----------------/
   |moduleFunc1      |
   |moduleClass1     |
   |  class1Method1  |
   |  class1Method2  |
   |moduleFunc2      |
   |moduleVar1       |
   |moduleVar2       |
   /-----------------\

 from module1 import moduleFunc1, muduleVar2
 # namespace becomes:
   \-----------------/
   |moduleFunc1      |
   |moduleVar2       |
   |                 |
   /-----------------\

 from module1 import moduleClass1 as C1
 # namespace becomes
   \-----------------/
   |C1               |    # C1 === module1.moduleClass1
   |                 |
   /-----------------\



- Paddy.
P.S. I'm playing with http://www.jave.de
       The Java Ascii Versatile Editor.



From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:32:51 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:32:51 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<ef5lb9$h1k$2@lust.ihug.co.nz><ef5ncc$uus$1@news.albasani.net><mailman.524.1159095305.10491.python-list@python.org>
	<ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
	<efa864$rbf$1@lust.ihug.co.nz> <efakbd$867$1@news.albasani.net>
Message-ID: <efal18$idf$5@lust.ihug.co.nz>

In message <efakbd$867$1 at news.albasani.net>, Georg Brandl wrote:

> Lawrence D'Oliveiro wrote:
>> In message <mailman.559.1159188171.10491.python-list at python.org>, Fredrik
>> Lundh wrote:
>> 
>>> Lawrence D'Oliveiro wrote:
>>> 
>>>>> Georg Brandl wrote:
>>>>>
>>>>>> A function is broken if its implementation doesn't match the
>>>>>> documentation.
>>>>>
>>>>> or if it doesn't match the designer's intent.  cgi.escape is old
>>>>> enough that we would have noticed that, by now...
>>>>
>>>> _We_ certainly have noticed it.
>>> 
>>> you're not the designer...
>> 
>> I don't have to be. Whoever the designer was, they had not properly
>> thought through the uses of this function. That's quite obvious already,
>> to anybody who works with HTML a lot. So the function is broken and needs
>> to be fixed.
>> 
>> If you're worried about changing the semantics of a function that keeps
>> the same "cgi.escape" name, then fine. We delete the existing function
>> and add a new, properly-designed one. _That_ will be a wake-up call to
>> all the users of the existing function to fix their code.
> 
> What about the users who don't need to "fix" their code since it's working
> fine and flawlessly with the current cgi.escape?

They're just lucky. I guess, that the bugs haven't bitten them--yet.


From python.list at tim.thechases.com  Fri Sep  1 10:45:31 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 01 Sep 2006 09:45:31 -0500
Subject: working with ldap files
In-Reply-To: <1157119067.915441.219160@m79g2000cwm.googlegroups.com>
References: <1157119067.915441.219160@m79g2000cwm.googlegroups.com>
Message-ID: <44F8478B.8030108@tim.thechases.com>

> I have this string on a field
> CN=pointhairedpeoplethatsux,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com;CN=pointhairedboss,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com
> this string is all the groups one user has membership.
> So what I am trying to do.
> read this string
> and extract only the CNs
> 
> like
> 
> pointhairdepeoplethatsux,pointhairedboss

 >>> s = 
"CN=pointhairedpeoplethatsux,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com;CN=pointhairedboss,OU=Groups,OU=Hatepeople,OU=HR,DC=fabrika,DC=com"
 >>> pieces = sum([p.split(';') for p in s.split(',')], [])
 >>> pieces
['CN=pointhairedpeoplethatsux', 'OU=Groups', 'OU=Hatepeople', 
'OU=HR', 'DC=fabrika', 'DC=com', 'CN=pointhairedboss', 
'OU=Groups', 'OU=Hatepeople', 'OU=HR', 'DC=fabrika', 'DC=com']
 >>> pieces = sum([p.split(';') for p in s.split(',')], [])
 >>> cns = [piece[3:] for piece in pieces if piece.startswith('CN=')]
 >>> cns
['pointhairedpeoplethatsux', 'pointhairedboss']


The process basically splits on commas, then splits each of those 
pieces on semi-colons, then flattens the list-of-lists into a 
single list of all the pieces (the flattening is done by abusing 
sum() so there may be better, more elegant ways of doing that). 
Once you have the flattened list of pieces, you can then just 
check for the ones that start with "CN=" and extract the bits of 
them that you need.

-tkc






From thorsten at thorstenkampe.de  Sat Sep 16 11:25:20 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Sat, 16 Sep 2006 16:25:20 +0100
Subject: RegexBuddy (anyone use this?)
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
Message-ID: <18oehqziifr36.1h6zhiw7sysmy.dlg@40tude.net>

* Eric_Dexter at msn.com (2006-09-16 15:27 +0100)
> Has anyone tried this thing..
> http://www.regular-expressions.info/regexbuddy.html
> 
> If I had $30 would this be worth getting or should I just try to learn
> the manual.

Well, actually both is worth trying.

> (I was hopeing the essential refrence would clear things
> up but I am downloading a gilgillion pages on the re module to try to
> learn it)

If you just have problems getting the grip of Python style regular
expressions than it's probably overkill. I think [1] suffices. But if
you regularly deal with regexes then RegexBuddy is indispensable and
unique.

Thorsten

PS Actually the author wrote the finest and best Windows Editor and I
also use EditPad Pro under Linux (together with Wine) because of the
lack of usables editors under Linux.

[1] http://www.regular-expressions.info/python.html


From jaysherby at gmail.com  Sat Sep  9 00:28:24 2006
From: jaysherby at gmail.com (Jay)
Date: 8 Sep 2006 21:28:24 -0700
Subject: python loops
In-Reply-To: <1hld311.uenm013j975oN%aleax@mac.com>
References: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>
	<JcGJg.21533$ED.7604@read2.cgocable.net>
	<1157051115.635459.215920@p79g2000cwp.googlegroups.com>
	<intkf21gg4qbcjln2hqauavpuua5bda47t@4ax.com>
	<1hld311.uenm013j975oN%aleax@mac.com>
Message-ID: <1157776104.036697.148300@b28g2000cwb.googlegroups.com>

Here are my benchmarks for those interested in version 2.4.3

jsherby at montauk:~$ python -V
Python 2.4.3
jsherby at montauk:~$ python -mtimeit 'for x in range(1000):pass'
10000 loops, best of 3: 64.2 usec per loop
jsherby at montauk:~$ python -mtimeit 'for x in xrange(1000):pass'
10000 loops, best of 3: 50.5 usec per loop
jsherby at montauk:~$ python -mtimeit -s'y=range(1000)' 'for x in y:pass'
10000 loops, best of 3: 68.2 usec per loop
jsherby at montauk:~$ python -mtimeit -s'y=xrange(1000)' 'for x in y:pass'
10000 loops, best of 3: 51.4 usec per loop
jsherby at montauk:~$ python -mtimeit -s'from itertools import repeat'
'for x in repeat(None, 1000): pass'
10000 loops, best of 3: 45.6 usec per loop
jsherby at montauk:~$

Alex Martelli wrote:
> Tim Roberts <timr at probo.com> wrote:
>    ...
> > xrange used to be better.  As I understand it, that's no longer the case.
>
> measuring is better than guessing:
>
> brain:~/codejam alex$ python -V
> Python 2.5c1
> brain:~/codejam alex$ python -mtimeit 'for x in range(1000):pass'
> 10000 loops, best of 3: 71.9 usec per loop
> brain:~/codejam alex$ python -mtimeit 'for x in xrange(1000):pass'
> 10000 loops, best of 3: 54 usec per loop
> brain:~/codejam alex$ python -mtimeit -s'y=range(1000)' 'for x in
> y:pass'
> 10000 loops, best of 3: 44.8 usec per loop
> brain:~/codejam alex$ python -mtimeit -s'y=xrange(1000)' 'for x in
> y:pass'
> 10000 loops, best of 3: 53.2 usec per loop
> brain:~/codejam alex$
>
> So: in 2.5 (2.4 too, do your own timings;-) range is better if you can
> create the range once and use it repeatedly, xrange if you have to
> create the range each time.  But actually:
>
> brain:~/codejam alex$ python -mtimeit -s'from itertools import repeat'
> 'for x in repeat(None, 1000): pass'
> 10000 loops, best of 3: 41.3 usec per loop
>
> if you don't actually need the iteration-index in the loop (you just
> need to repeat the loop N times), itertools.repeat is even better (well,
> if every microsecond counts, anyway;-).
> 
> 
> Alex



From bdesth.quelquechose at free.quelquepart.fr  Mon Sep 18 17:54:24 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 18 Sep 2006 23:54:24 +0200
Subject: Creating database structures in a portable way
In-Reply-To: <1158602201.926509.228420@k70g2000cwa.googlegroups.com>
References: <1158594419.579160.194570@m73g2000cwd.googlegroups.com>
	<450ec289$0$1804$636a55ce@news.free.fr>
	<1158602201.926509.228420@k70g2000cwa.googlegroups.com>
Message-ID: <450f122f$0$905$636a55ce@news.free.fr>

Samuel a ?crit :
>>FWIW, there's a Python port of adodb:
>>http://phplens.com/lens/adodb/adodb-py-docs.htm
>>
>>and parsing XML in Python is quite easy. So you could as well port the
>>AdoDB XML to Python too.
> 
> 
> That is exactly what I am trying to avoid. While implementing the
> parser might be easy, you have to translate things into different
> database flavors, caring about a bunch of things that I'd rather not
> have to think about.

This I can understand pretty well - hence my suggestion of using 
SQLAlchemy instead.

> 
>>OTOH, there are other - possibly better (YMMV) - DB abstraction layers
>>in Python, like SQLAlchemy.
> 
> 
> SQLAlchemy looks pretty good, but unfortunately apparently requires
> shell access for installation (or at least, I have not found any other
> solution covered in the docs), which I can not use. I need a solution
> that can be shipped in a software package, and installed by simply
> copying it to the server.

It doesn't use binaries AFAIK, so just copying should work as well.

> 
>>And since the above solution requires
>>(re)writing the xml-parsing part, it might be worth rewriting it so it
>>knows how to generate SQLAlchemy schemas instead.
> 
> Rewriting the schema is possible (I only want to keep it separated from
> the code),

Why ? Isn't your code supposed to use it ?

> so using SQLAlchemy's built in solution for generating
> tables seems just fine. It's only the installation part.

cf above.

> Anyway, I am wondering; Python seems to include database adapters for
> almost any important database, all with a unified API. Why would you
> need another database abstraction on top of that?

A first point is that the DB-API doesn't hide the differences between 
various SQL dialects. A second point is that DB-API requires you to 
embed SQL statements as strings, while SQLAlchemy allow you to build 
your SQL queries in pure Python. (and FWIW, if using an existing DB, you 
don't even have to describe the schema a second time to use it). Well, 
just start playing with it, and I really doubt you'll want to come back 
to the embedded hand-written SQL !-)

My 2 cents


From duncan.booth at invalid.invalid  Tue Sep 26 09:24:36 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 13:24:36 GMT
Subject: Ordered dicts
References: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
Message-ID: <Xns984A91006BF71duncanbooth@127.0.0.1>

bearophileHUGS at lycos.com wrote:

> Deleted keys from a dict/set aren't removed, they are tagged as
> deleted.
> My experience of CPython sources is tiny, I have just read few parts,
> so a person much more expert than me can comment the following lines.
> 
> During the printing of the set/dict I think such flags are just read
> and skipped one after the other.
> 
> So I think to keep the insertion order of the keys a simple chained
> list is enough, each inserted key has a pointer to the successive one
> (even deleted keys).

Not quite. Dictionary slots containing deleted keys are available for re-
use. In an ordinary dictionary you just overwrite the deleted flag with the 
new value, but for your ordered dictionary if you did that you would have 
to fix up the linked list.

Probably the simplest solution for an odict would be to keep the key in the 
dictionary after deletion but mark it as deleted (by setting the value to 
null). Then if you reinsert the deleted value it goes back in at its 
original order.

The catch of course is that keys then never get released, but you can 
always compact an odict by copying it:

  d = odict(d)

which should preserve the order but release the deleted keys (assuming no 
other references to the original copy).

> The simple linked list has to be managed (tail insertions only), and
> scanned from the listHead inside iterating methods like iteritems,
> items, values, etc.

You would also need to make sure that internal iterations also go through 
the linked list order. e.g. resizing a dict currently just goes through 
each entry inserting it into the new dict.

> If such solution is possibile, then how much difficult is such
> implementation?

It sounds easy enough, just a copy of the existing dict code with a few 
minor tweaks.



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 06:48:58 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 11:48:58 +0100
Subject: Get CPU usage of a single process in Windows
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B431@vogbs009.gb.vo.local>

[Gerrit Muller]
| 
| Tim Golden wrote:

| > WMI can probably do the trick. I'm fairly sure I've got an example 
| somewhere, but  I can't lay my hands on it at the mo.

| If you have a working example of CPU usage could you post the 
| result? I 
| would be interested.

I haven't time to revisit it just at the moment, but here's
an earlier thread in which I posted a version:

http://mail.python.org/pipermail/python-win32/2006-April/004536.html

(If it's not readable because of formatting, drop me a private
email and I'll send you a copy)
TJG

________________________________________________________________________
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From dwelch91 at gmail.com  Fri Sep 15 14:49:14 2006
From: dwelch91 at gmail.com (dwelch91 at gmail.com)
Date: 15 Sep 2006 11:49:14 -0700
Subject: Strange xml.parsers.xml import problem
Message-ID: <1158346154.021445.143500@m73g2000cwd.googlegroups.com>

Hi, c.l.p.'ers-

I am having a problem with the import of xml.parsers.expat that has
gotten me completely stumped. I have two programs, one a PyQt program
and one a command line (text) program that both eventually call the
same code that imports xml.parsers.expat. Both give me different
results...

The code that gets called is (print statements have been added for
debugging):

    # this is status.py
    import xml.parsers.expat
    print xml
    print xml.parsers
    print dir(xml.parsers)
    print repr(xml.parsers.expat.ExpatError)
    print xml.parsers.expat

    if info_device_status:
        try:
            device_status =
utils.XMLToDictParser().parseXML(info_device_status)
            log.debug_block("info_device_status", info_device_status)
            log.debug(device_status)
        except xml.parsers.expat.ExpatError:
            log.error("Device Status XML parse error")
            device_status = {}

    if info_ssp:
        try:
            ssp = utils.XMLToDictParser().parseXML(info_ssp)
            log.debug_block("info_spp", info_ssp)
            log.debug(ssp)
        except xml.parsers.expat.ExpatError:
            log.error("SSP XML parse error")
            ssp = {}

When I run this code from my console program, it prints out:

<module '_xmlplus' from
'/usr/lib/python2.4/site-packages/_xmlplus/__init__.pyc'>
<module 'xml.parsers' from
'/usr/lib/python2.4/site-packages/_xmlplus/parsers/__init__.pyc'>
['__all__', '__builtins__', '__doc__', '__file__', '__name__',
'__path__', 'expat', 'pyexpat']
<class xml.parsers.expat.ExpatError at 0x2aaaac6c6950>
<module 'xml.parsers.expat' from
'/usr/lib/python2.4/site-packages/_xmlplus/parsers/expat.pyc'>

and all is well...

However, from the PyQt program I get:

<module '_xmlplus' from
'/usr/lib/python2.4/site-packages/_xmlplus/__init__.pyc'>
<module '_xmlplus.parsers' from
'/usr/lib/python2.4/site-packages/_xmlplus/parsers/__init__.pyc'>
['__all__', '__builtins__', '__doc__', '__file__', '__name__',
'__path__', 'sgmlop']
Traceback (most recent call last):

[...snip...]

  File
"/home/dwelch/tip/linux-imaging-and-printing/src/base/status.py", line
980, in StatusType6
    print repr(xml.parsers.expat.ExpatError)
AttributeError: 'module' object has no attribute 'expat'

Somehow, the import has brought in "_xmlplus" rather than "xml", and
"expat" is no longer in the xml.parsers module. This is on the same
machine with the same user account, running each program "back to
back". Running each program as a different user made no difference.

Everything is also OK if I manually enter the import and print commands
into a Python >>> prompt.

Any help much appreciated!

-Don



From btowle at carnegielearning.com  Tue Sep 12 15:08:21 2006
From: btowle at carnegielearning.com (Brendon Towle)
Date: Tue, 12 Sep 2006 15:08:21 -0400
Subject: Random Drawing Simulation -- performance issue
Message-ID: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>

I need to simulate scenarios like the following: "You have a deck of  
3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,  
replace it, and repeat N times."

So, I wrote the following code, which works, but it seems quite slow  
to me. Can anyone point out some obvious thing that I'm doing  
inefficiently? Or, is this more or less as good as it gets?

For reference, my typical numbers look like this:

   2 <= len(population) <= 7
   4 <= len(mapping) <= 50
   10 <= count <= 1000000

B.

<code>
#!/usr/bin/env python

import random

def randomDrawing(count, population):
     """Simulates drawing <count> items from <population>, with  
replacement.
     population is a list of lists: [[count1, type1], [count2,  
type2], ...]

     Typical examples:
     >>>randomDrawing(100, [[3, 'orange'], [5, 'yellow'], [2, 'blue']])
     [[28, 'orange'], [57, 'yellow'], [15, 'blue']]

     >>>randomDrawing(100000, [[3, 'orange'], [5, 'yellow'], [2,  
'blue']])
     [[29923, 'orange'], [50208, 'yellow'], [19869, 'blue']]

     """
     res = [[0, item[1]] for item in population]
     mapping = []
     for i in xrange(len(population)):
         mapping.extend([i]*population[i][0])
     for i in xrange(count):
         index = random.choice(mapping)
         res[index][0] += 1
     return res

</code>

-- 
Brendon Towle, PhD
Cognitive Scientist
+1-412-690-2442x127
Carnegie Learning, Inc.
The Cognitive Tutor Company ?
Helping over 375,000 students in 1000 school districts succeed in math.




From stevenq1967 at gmail.com  Thu Sep  7 16:08:52 2006
From: stevenq1967 at gmail.com (stevenq1967 at gmail.com)
Date: 7 Sep 2006 13:08:52 -0700
Subject: wxPython
Message-ID: <1157659732.697958.290990@m73g2000cwd.googlegroups.com>

Hello everyone,
I'm new at this so please be gentle. I have Python 2.4 on fc4. I
installed easy_install and Python  in my home directory  since I don't
have root permissions. It works fine. Now I want to install wxPython. I
downloaded wxPython-src2.6.3.3.tar.bz2 from the site and now I'm trying
this from the commnad line:
easy_install --install-dir
/usr/people/stevenq/lib/python2.4/site-packages/ --dry-run
~/Desktop/wxPython-src-2.6.3.3.tar
and I get this:
error: Couldn't find a setup script in
/usr/people/stevenq/Desktop/wxPython-src-2.6.3.3.tar
Anybody  has any ideas?
Best regards,
Steven



From franz.steinhaeusler at gmx.at  Mon Sep 18 08:12:31 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Mon, 18 Sep 2006 14:12:31 +0200 (CEST)
Subject: PythonCAD question
References: <eeluh9$2tp$1@newsreader2.utanet.at>
	<eelvij$74k$02$1@news.t-online.com>
	<eem0df$7ai$1@newsreader2.utanet.at>
	<eem1et$ene$03$1@news.t-online.com>
Message-ID: <eem2fe$deh$1@newsreader2.utanet.at>

Peter Otten wrote:

> Franz Steinhaeusler wrote:
>
>>> The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is
>>> running on a Mac. The missing module is rather a symptom than the cause
>>> of the bug.
>
>> On the homepage,
>> http://www.pythoncad.org/
>> there is the text:
>> 
>> 
>> "PythonCAD does run on Windows if you have the Windows
>> ports of the required libraries and modules."
>
> I don't doubt that. Looking into PythonCad.py, though, I find
>
> # main routine to start Cocoa-based PythonCad
>
> On Windows gtkpycad.py with
>
> # main routine to start GTK-based pycad
>
> looks more promising...
>
> Peter

Thank you! It laid diretly in front of me.
-- 
Franz Steinhaeusler



From onurb at xiludom.gro  Fri Sep 15 08:21:48 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 15 Sep 2006 14:21:48 +0200
Subject: Check if variable is an instance of a File object
In-Reply-To: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
Message-ID: <450a9add$0$22213$626a54ce@news.free.fr>

sc_wizard29 at hotmail.com wrote:
> Hi everyone,
> 
> Maybe these questions will sound strange to you, but I sometime have a
> hard time switching from Java to Python ;-)
> 
> Let's say I have a function like this :
> 
> def show_lines(file):
> 	for next_line in file:
> 		...

OT :  this will shadow the builtin file type. Avoid shadowing builtin
types if you value your mental sanity !-)

> What can I do to be sure that the input argument is indeed a 'File'
> object ?

Why do you think you need "to be sure that the input argument is indeed
a 'File' object" ? As long as the object passed in is able to answer to
the messages you'll send to it, everything's fine, isn't it ? And if it
fails, well, you'll find out pretty soon...

> #1 : should I start by checking that 'file' is indeed an instance of a
> File object ? 

Unless you have a *very* compelling reason to do so (and I can't imagine
 one here), definitively, no. FWIW, it's pretty common in Python to pass
file-like objects (StringIo comes to mind... but there are lots of other
cases) to functions expecting a file object. And remember that Python
doesn't relies on inheritence for typing. Also, for what you showed of
your code, any iterable seems ok !-)

> (and how do I do this ?)

isinstance(obj, *classes)

OT : note that in your case, since the arg name 'file' shadows the
builtin type, you'll have hard time using it !-)

> #2 : should I do nothing ? 

Yes. Well, IMHO.

> (but I don't like the idea of risking to
> have a runtime exception raised somewhere)

Err... What exactly do you intend to do if the object passed in is not a
file ? Raise a TypeError ? If so, when do you think it will fires ? Yes
my friend- at runtime !-)

As you noticed, switching from Java to Python requires some mental
adjustements... Not fearing runtime exceptions is one of them. Thinking
in terms of implied interface is another one. In your above code, you
really don't care if the objects is a file or not - you just care if the
object support the subset of the file interface you intend to use. And
this, you'll only know at runtime.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From jon+usenet at unequivocal.co.uk  Mon Sep 25 11:02:16 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 15:02:16 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<4517ec24$0$13947$edfadb0f@dread15.news.tele.dk>
Message-ID: <slrnehfrrg.6tm.jon+usenet@snowy.squish.net>

In article <4517ec24$0$13947$edfadb0f at dread15.news.tele.dk>, Max M wrote:
>> I'm sorry, that's not good enough. How, precisely, would it break
>> "existing code"? Can you come up with an example, or even an
>> explanation of how it *could* break existing code?
> 
> Some examples are:
> 
> - Possibly any code that tests for string equality in a rendered 
> html/xml page. Testing is a prefered development tool these days.

Testing is good, but only if done correctly.

> - Code that generates cgi.escaped() markup and (rightfully) for some 
> reason expects the old behaviour to be used.

That's begging the question again ("an example of code that would
break is code that would break").

> - 3. party code that parses/scrapes content from cgi.escaped() markup. 
> (you could even break Java code this way :-s )

I'm sorry, I don't understand that one. What is "party code"? Code
that is scraping content from web sites already has to cope with
entities etc.

Your comment about Java is a little ironic given that I persuaded the
Java Struts people to make the exact same change we're talking about
here, back in 2002 (even if it did take 11 months) ;-)

> If you cannot think of other examples for yourself where your change 
> would introduce breakage, you are certainly not an experienced enough 
> programmer to suggest changes in the standard lib!

I'll take my own opinion on that over yours, thanks.


From steve at holdenweb.com  Mon Sep 18 17:01:47 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 18 Sep 2006 17:01:47 -0400
Subject: why a main() function?
In-Reply-To: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
Message-ID: <een1ec$8uk$1@sea.gmane.org>

beliavsky at aol.com wrote:
> I think I read a suggestion somewhere to wrap the code where a Python
> script starts in a main() function, so one has
> 
> def main():
>     print "hi"
> 
> main()
> 
> instead of
> 
> print "hi"
> 
> What are the advantages of doing this?
> 
Guido van Rossum himself can tell you:

   http://www.artima.com/forums/flat.jsp?forum=106&thread=4829

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From vedran_dekovic at yahoo.com  Thu Sep  7 13:05:18 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 7 Sep 2006 10:05:18 -0700
Subject: Tkinter listbox:get
Message-ID: <1157648718.742353.299980@m73g2000cwd.googlegroups.com>

Hi,
I need help about Tkinter.I want,when somebody click on some item in
listbox,then
in new entry widget must write that item

Regards,
Vedran



From Roberto.Bonvallet at cern.ch  Wed Sep 20 10:12:40 2006
From: Roberto.Bonvallet at cern.ch (Roberto Bonvallet)
Date: 20 Sep 2006 14:12:40 GMT
Subject: Replace single character at given position
References: <ke46u3-b2j.ln1@thunderbird.tld>
	<1158702690.314364.8320@b28g2000cwb.googlegroups.com>
Message-ID: <eeri8o$12t$1@sunnews.cern.ch>

bearophileHUGS at lycos.com wrote:
> Martin Kulas:
>> Are there better (faster) ways to achieve my goal?
>> I have looked through the methods of type ``string''
>> but I have not found any appropriate method or function.
[...]
> A second way is to use a list of strings with len=1. Like this:
>>>> idx = 1
>>>> s1 = "pxthon"
>>>> l1 = list(s1)
>>>> l1[idx] = 'y'
> ... more processing on the elements of l1, then at the end:
>>>> "".join(l1)
> 'python'

There is a MutableString class that would be a better approach:
http://docs.python.org/lib/module-UserString.html

Anyway, I bet that what Martin wants to do can be done by using only string
methods :)
-- 
Roberto Bonvallet


From peace.is.our.profession at gmx.de  Wed Sep 27 06:30:30 2006
From: peace.is.our.profession at gmx.de (Mirco Wahab)
Date: Wed, 27 Sep 2006 12:30:30 +0200
Subject: Battlefield Weapon Popularity Trend
In-Reply-To: <mailman.784.1159348105.10491.python-list@python.org>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
	<mailman.784.1159348105.10491.python-list@python.org>
Message-ID: <efdk3v$2ia$1@mlucom4.urz.uni-halle.de>

Thus spoke Ramon Diaz-Uriarte (on 2006-09-27 11:01):

>> When the Samurai of medieval Japan were confronted
>> with new 'battlefield language', e.g. early Shotguns,
>> they resisted because one could push any peasant
> 
> shouldn't this be "they [the Samurai] did not resist"?

The "resisted" believing all the buzz,
e.g.: "armies made of dudes with guns" ...

(and tried to preserve their Art,
which did not work in the end -
"the Art of Killing" was replaced
by "mass production of deaths" on
the battlefield ...)

Regards,

M.



From neoedmund at gmail.com  Thu Sep  7 22:56:43 2006
From: neoedmund at gmail.com (neoedmund)
Date: 7 Sep 2006 19:56:43 -0700
Subject: what is java's System.currentTimeMillis() in python
Message-ID: <1157684203.531092.219390@m73g2000cwd.googlegroups.com>


    /**
     * Returns the current time in milliseconds.  Note that
     * while the unit of time of the return value is a millisecond,
     * the granularity of the value depends on the underlying
     * operating system and may be larger.  For example, many
     * operating systems measure time in units of tens of
     * milliseconds.
     *
     * <p> See the description of the class <code>Date</code> for
     * a discussion of slight discrepancies that may arise between
     * "computer time" and coordinated universal time (UTC).
     *
     * @return  the difference, measured in milliseconds, between
     *          the current time and midnight, January 1, 1970 UTC.
     * @see     java.util.Date
     */
    public static native long currentTimeMillis();

python's time.clock() time.time() return a float,
i think it's not as handy as java's currentTimeMillis()
any good solution? thanks.



From kbk at shore.net  Thu Sep 21 16:15:24 2006
From: kbk at shore.net (Kurt B. Kaiser)
Date: Thu, 21 Sep 2006 16:15:24 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary ** REVISED **
Message-ID: <200609212015.k8LKFONN031921@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  420 open ( +4) /  3410 closed ( +2) /  3830 total ( +6)
Bugs    :  915 open (+17) /  6186 closed ( +6) /  7101 total (+23)
RFE     :  235 open ( +1) /   238 closed ( +0) /   473 total ( +1)

New / Reopened Patches
______________________

Practical ctypes example  (2006-09-15)
       http://python.org/sf/1559219  opened by  leppton

test_popen fails on Windows if installed to "Program Files"  (2006-09-15)
       http://python.org/sf/1559298  opened by  Martin v. L?wis

test_cmd_line fails on Windows  (2006-09-15)
       http://python.org/sf/1559413  opened by  Martin v. L?wis

pyclbr reports different module for Class and Function  (2006-09-18)
       http://python.org/sf/1560617  opened by  Peter Otten

Exec stacks in python 2.5  (2006-09-18)
       http://python.org/sf/1560695  opened by  Chaza

Python 2.5 fails with -Wl,--as-needed in LDFLAGS  (2006-09-21)
       http://python.org/sf/1562825  opened by  Chaza

Patches Closed
______________

test_grp.py doesn't skip special NIS entry, fails  (2006-06-22)
       http://python.org/sf/1510987  closed by  martineau

Add RLIMIT_SBSIZE to resource module  (2006-09-13)
       http://python.org/sf/1557515  closed by  loewis

New / Reopened Bugs
___________________

some section links (previous, up, next) missing last word  (2006-09-15)
       http://python.org/sf/1559142  opened by  Tim Smith

time.strptime() access non exitant attribute in calendar.py  (2006-09-15)
CLOSED http://python.org/sf/1559515  opened by  betatim

shutil.copyfile incomplete on NTFS  (2006-09-16)
       http://python.org/sf/1559684  opened by  Roger Upole

gcc trunk (4.2) exposes a signed integer overflows  (2006-08-24)
       http://python.org/sf/1545668  reopened by  arigo

2.5c2 pythonw does not execute  (2006-09-16)
CLOSED http://python.org/sf/1559747  opened by  Ron Platten

list.sort does nothing when both cmp and key are given  (2006-09-16)
CLOSED http://python.org/sf/1559818  opened by  Marcin 'Qrczak' Kowalczyk

confusing error msg from random.randint  (2006-09-17)
       http://python.org/sf/1560032  opened by  paul rubin

Tutorial: incorrect info about package importing and mac  (2006-09-17)
       http://python.org/sf/1560114  opened by  C L

Better/faster implementation of os.path.split  (2006-09-17)
CLOSED http://python.org/sf/1560161  opened by  Michael Gebetsroither

Better/faster implementation of os.path.basename/dirname  (2006-09-17)
       http://python.org/sf/1560179  reopened by  gbrandl

Better/faster implementation of os.path.basename/dirname  (2006-09-17)
       http://python.org/sf/1560179  opened by  Michael Gebetsroither

copy() method of dictionaries is not "deep"  (2006-09-17)
       http://python.org/sf/1560327  reopened by  gbrandl

copy() method of dictionaries is not "deep"  (2006-09-17)
       http://python.org/sf/1560327  opened by  daniel hahler

strftime('%z') behaving differently with/without time arg.  (2006-09-18)
       http://python.org/sf/1560794  opened by  Knut Aksel R?ysland

python 2.5 fails to build with --as-needed  (2006-09-18)
       http://python.org/sf/1560984  opened by  Chaza

mac installer profile patch vs. .bash_login  (2006-09-19)
       http://python.org/sf/1561243  opened by  Ronald Oussoren

-xcode=pic32 option is not supported on Solaris x86 Sun C  (2006-09-19)
       http://python.org/sf/1561333  opened by  James Lick

Dedent with Italian keyboard  (2006-09-20)
       http://python.org/sf/1562092  opened by  neclepsio

Fails to install on Fedora Core 5  (2006-09-20)
       http://python.org/sf/1562171  opened by  Mark Summerfield

IDLE Hung up after open script by command line...  (2006-09-20)
       http://python.org/sf/1562193  opened by  Faramir^

uninitialized memory read in parsetok()  (2006-09-20)
       http://python.org/sf/1562308  opened by  Luke Moore

asyncore.dispatcher.set_reuse_addr not documented.  (2006-09-20)
       http://python.org/sf/1562583  opened by  Noah Spurrier

Spurious tab/space warning  (2006-09-21)
       http://python.org/sf/1562716  opened by  torhu

Spurious Tab/space error  (2006-09-21)
       http://python.org/sf/1562719  opened by  torhu

decimal module borks thread  (2006-09-21)
       http://python.org/sf/1562822  opened by  Jaster

MacPython ignores user-installed Tcl/Tk  (2006-09-21)
       http://python.org/sf/1563046  opened by  Russell Owen

code.InteractiveConsole() and closed sys.stdout  (2006-09-21)
       http://python.org/sf/1563079  opened by  Skip Montanaro

Bugs Closed
___________

2.5c2 macosx installer aborts during "GUI Applications"  (2006-09-15)
       http://python.org/sf/1558983  closed by  ronaldoussoren

time.strptime() access non existant attribute in calendar.py  (2006-09-15)
       http://python.org/sf/1559515  closed by  bcannon

2.5c2 pythonw does not execute  (2006-09-16)
       http://python.org/sf/1559747  closed by  loewis

list.sort does nothing when both cmp and key are given  (2006-09-16)
       http://python.org/sf/1559818  closed by  qrczak

Better/faster implementation of os.path.split  (2006-09-17)
       http://python.org/sf/1560161  deleted by  einsteinmg

Better/faster implementation of os.path.basename/dirname  (2006-09-17)
       http://python.org/sf/1560179  deleted by  einsteinmg

copy() method of dictionaries is not "deep"  (2006-09-17)
       http://python.org/sf/1560327  closed by  gbrandl

UCS-4 tcl not found on SUSE 10.1 with tcl and tk 8.4.12-14  (2006-09-02)
       http://python.org/sf/1550791  closed by  loewis

New / Reopened RFE
__________________

Exception need structured information associated with them  (2006-09-15)
       http://python.org/sf/1559549  opened by  Ned Batchelder

String searching performance improvement  (2006-09-19)
CLOSED http://python.org/sf/1561634  opened by  Nick Welch

RFE Closed
__________

String searching performance improvement  (2006-09-19)
       http://python.org/sf/1561634  deleted by  mackstann



From sjdevnull at yahoo.com  Tue Sep  5 11:23:45 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 5 Sep 2006 08:23:45 -0700
Subject: threading support in python
In-Reply-To: <1157422764.573537.116340@m79g2000cwm.googlegroups.com>
References: <4klub9Fcqv5kU1@individual.net>
	<1155932094.617287.84980@i3g2000cwc.googlegroups.com>
	<1155933754.114724.250180@i3g2000cwc.googlegroups.com>
	<gTqFg.16305$o27.3834@newssvr21.news.prodigy.com>
	<4knq9hFctlsuU1@individual.net>
	<1156001501.741149.162810@h48g2000cwc.googlegroups.com>
	<PsJFg.66833$u11.21481@tornado.ohiordc.rr.com>
	<1157214620.847062.68090@b28g2000cwb.googlegroups.com>
	<1157409631.751524.99560@b28g2000cwb.googlegroups.com>
Message-ID: <1157469825.184895.176080@d34g2000cwd.googlegroups.com>

Sandra-24 wrote:
> > You seem to be confused about the nature of multiple-process
> > programming.
> >
> > If you're on a modern Unix/Linux platform and you have static read-only
> > data, you can just read it in before forking and it'll be shared
> > between the processes..
>
> Not familiar with *nix programming, but I'll take your word on it.

You can do the same on Windows if you use CreateProcessEx to create the
new processes and pass a NULL SectionHandle.  I don't think this helps
in your case, but I was correcting your impression that "you'd have to
physically double the computer's memory for a dual core, or quadruple
it for a quadcore".  That's just not even near true.

> > Threads are way overused in modern multiexecution programming.  The
>
> <snip>
>
> > It used to run on windows with multiple processes.  If it really won't
> > now, use an older version or contribute a fix.
>
> First of all I'm not in control of spawning processes or threads.
> Apache does that, and apache has no MPM for windows that uses more than
> 1 process.

As I said, Apache used to run on Windows with multiple processes; using
a version that supports that is one option.  There are good reasons not
to do that, though, so you could be stuck with threads.

> Secondly "Superior" is definately a matter of opinion. Let's
> see how you would define superior.

Having memory protection is superior to not having it--OS designers
spent years implementing it, why would you toss out a fair chunk of it?
 Being explicit about what you're sharing is generally better than not.


But as I said, threads are a better solution if you're sharing the vast
majority of your memory and have complex data structures to share.
When you're starting a new project, really think about whether they're
worth the considerable tradeoffs, though, and consider the merits of a
multiprocess solution.

> 3) Rewrite my codebase to use some form of shared memory. This would be
> a terrible nightmare that would take at least a month of development
> time and a lot of heavy rewriting. It would be very difficult, but I'll
> grant that it may work if done properly with only small performance
> losses.

It's almost certainly not worth rewriting a large established
codebasen.


> I would find an easier time, I think, porting mod_python to .net and
> leaving that GIL behind forever. Thankfully, I'm not considering such
> drastic measures - yet.

The threads vs. processes thing isn't strongly related to the
implementation language (though a few languages like Java basically
take the decision out of your hands). Moving to .NET leaves you with
the same questions to consider before making the decision--just working
in C# doesn't somehow make threads the right choice all the time.

> Why on earth would I want to do all of that work? Just because you want
> to keep this evil thing called a GIL?

No, I agreed that the GIL is a bad thing for some applications.

> My suggestion is in python 3
> ditch the ref counting, use a real garbage collector

I disagree with this, though.  The benefits of deterministic GC are
huge and I'd like to see ref-counting semantics as part of the language
definition.  That's a debate I just had in another thread, though, and
don't want to repeat.

> > Now, the GIL is independent of this; if you really need threading in
> > your situation (you share almost everything and have hugely complex
> > data structures that are difficult to maintain in shm) then you're
> > still going to run into GIL serialization.  If you're doing a lot of
> > work in native code extensions this may not actually be a big
> > performance hit, if not it can be pretty bad.
>
> Actually, I'm not sure I understand you correctly. You're saying that
> in an environment like apache (with 250 threads or so) and my hugely
> complex shared data structures, that the GIL is going to cause a huge
> performance hit?

I didn't say that.  It can be a big hit or it can be unnoticeable.  It
depends on your application.  You have to benchmark to know for sure.

But if you're trying to make a guess: if you're doing a lot of heavy
lifting in native modules then the GIL may be released during those
calls, and you might get good multithreading performance.  If you're
doing lots of I/O requests the GIL is generally released during those
and things will be fine.  If you're doing lots of heavy crunching in
Python, the GIL is probably held and can be a big performance issue.

Since your app sounds like it's basically written, there's not much
cause to guess; benchmark it and see if it's fast enough or not.  If
so, don't spend time and effort optimizing.



From rtw at freenet.co.uk  Sun Sep 24 14:53:21 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Sun, 24 Sep 2006 13:53:21 -0500
Subject: interactive programe-pyTTS &Tk
References: <mailman.534.1159111835.10491.python-list@python.org>
Message-ID: <Xns9848CA8D34201rtwfreenetREMOVEcouk@216.196.109.145>

Nigel wrote in news:mailman.534.1159111835.10491.python-list at python.org
in comp.lang.python: 

> from Tkinter import *
> import pyTTS
> Hi i am trying to get a button so that when i click on it i hear a
> voice say "Hi Molly" this is my code so far.Can any one shed any light
> on this for please.
> Thanks Nige.

Your problem appears to be that you do not know how to associate
an action (the press of the button) with the code you want to run
( tts.Speak ('hello molly') ).


Tk buttions have a command attribute that is called when the button 
is clicked:

    self.button1[ 'command' ] = HelloMolly


Where HelloMolly is an already defined python callable, for example:

    def HelloMolly():
      self.tts.Speak ('hello molly')

The above defenition of HelloMolly requires that somtime before it
is called, self.tts is created:

    self.tts = pyTTS.Create()

HTH.

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From metaperl at gmail.com  Fri Sep 15 06:26:38 2006
From: metaperl at gmail.com (metaperl)
Date: 15 Sep 2006 03:26:38 -0700
Subject: Converting a varargs tuple to a list - a definite pitfall for new
	comers to Python
In-Reply-To: <eedc54$srs$1@news.albasani.net>
References: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
	<eedc54$srs$1@news.albasani.net>
Message-ID: <1158315998.595201.275460@m73g2000cwd.googlegroups.com>


Georg Brandl wrote:
> metaperl.etc at gmail.com wrote:
> > The following program does not work if you uncomment     #lis =
> > ["xmms2"] + list(args)
> >
> > Evidently Python is opting for the nullary constructor list() as
> > opposed to the other one which takes a sequence. But no newcomer would
> > know this. And the Python docs dont give a good example of dealing with
> > taking a sequence of args and converting it to a list.
>
> Evidently you overlooked having defined a list() in global scope
> yourself which takes no arguments.

MASSIVELY overlooked it. Gosh. How embarrassing.



From dcrespo at gmail.com  Tue Sep 12 19:00:40 2006
From: dcrespo at gmail.com (Daniel Crespo)
Date: 12 Sep 2006 16:00:40 -0700
Subject: Resolved: Secure XMLRPC Server / PEM Files
In-Reply-To: <1158093676.188294.241140@h48g2000cwc.googlegroups.com>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
	<4505B54C.30905@designaproduct.biz>
	<mailman.285.1158002192.5279.python-list@python.org>
	<1158005948.883368.185320@m73g2000cwd.googlegroups.com>
	<mailman.289.1158006990.5279.python-list@python.org>
	<1158016994.349214.264610@q16g2000cwq.googlegroups.com>
	<mailman.354.1158069918.5279.python-list@python.org>
	<1158093676.188294.241140@h48g2000cwc.googlegroups.com>
Message-ID: <1158102040.171952.251270@e3g2000cwe.googlegroups.com>

Hi everybody,

For those who want to implement a SecureXMLRPCServer (HTTPS), here is
what I finally found in the Internet. I will summarise everything for
the people like me that need extra help just to get running an HTTPS
XMLRPC Server :)

This summary is not intended to be exhaustive, but just to give the
minimum steps to get running our server.

Here's the code (taken from
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496786):

"""SecureXMLRPCServer.py - simple XML RPC server supporting SSL.

Based on this article:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81549

For windows users:
http://webcleaner.sourceforge.net/pyOpenSSL-0.6.win32-py2.4.exe
"""

# Configure below
LISTEN_HOST='127.0.0.1' # You should not use '' here, unless you have a
real FQDN.
LISTEN_PORT=443

KEYFILE='your.key.pem'    # Replace with your PEM formatted key file
CERTFILE=your.cert.pem'  # Replace with your PEM formatted certificate
file
# Configure above

import SocketServer
import BaseHTTPServer
import SimpleHTTPServer
import SimpleXMLRPCServer

import socket, os
from OpenSSL import SSL

class
SecureXMLRPCServer(BaseHTTPServer.HTTPServer,SimpleXMLRPCServer.SimpleXMLRPCDispatcher):
    def __init__(self, server_address, HandlerClass, logRequests=True):
        """Secure XML-RPC server.

        It it very similar to SimpleXMLRPCServer but it uses HTTPS for
transporting XML data.
        """
        self.logRequests = logRequests

        SimpleXMLRPCServer.SimpleXMLRPCDispatcher.__init__(self)
        SocketServer.BaseServer.__init__(self, server_address,
HandlerClass)
        ctx = SSL.Context(SSL.SSLv23_METHOD)
        ctx.use_privatekey_file (KEYFILE)
        ctx.use_certificate_file(CERTFILE)
        self.socket = SSL.Connection(ctx,
socket.socket(self.address_family,

self.socket_type))
        self.server_bind()
        self.server_activate()

class
SecureXMLRpcRequestHandler(SimpleXMLRPCServer.SimpleXMLRPCRequestHandler):
    """Secure XML-RPC request handler class.

    It it very similar to SimpleXMLRPCRequestHandler but it uses HTTPS
for transporting XML data.
    """
    def setup(self):
        self.connection = self.request
        self.rfile = socket._fileobject(self.request, "rb",
self.rbufsize)
        self.wfile = socket._fileobject(self.request, "wb",
self.wbufsize)

    def do_POST(self):
        """Handles the HTTPS POST request.

        It was copied out from SimpleXMLRPCServer.py and modified to
shutdown the socket cleanly.
        """

        try:
            # get arguments
            data = self.rfile.read(int(self.headers["content-length"]))
            # In previous versions of SimpleXMLRPCServer, _dispatch
            # could be overridden in this class, instead of in
            # SimpleXMLRPCDispatcher. To maintain backwards
compatibility,
            # check to see if a subclass implements _dispatch and
dispatch
            # using that method if present.
            response = self.server._marshaled_dispatch(
                    data, getattr(self, '_dispatch', None)
                )
        except: # This should only happen if the module is buggy
            # internal error, report as HTTP server error
            self.send_response(500)
            self.end_headers()
        else:
            # got a valid XML RPC response
            self.send_response(200)
            self.send_header("Content-type", "text/xml")
            self.send_header("Content-length", str(len(response)))
            self.end_headers()
            self.wfile.write(response)

            # shut down the connection
            self.wfile.flush()
            self.connection.shutdown() # Modified here!

def test(HandlerClass = SecureXMLRpcRequestHandler,ServerClass =
SecureXMLRPCServer):
    """Test xml rpc over https server"""
    class xmlrpc_registers:
        def __init__(self):
            import string
            self.python_string = string

        def add(self, x, y):
            return x + y

        def mult(self,x,y):
            return x*y

        def div(self,x,y):
            return x//y

    server_address = (LISTEN_HOST, LISTEN_PORT) # (address, port)
    server = ServerClass(server_address, HandlerClass)
    server.register_instance(xmlrpc_registers())
    sa = server.socket.getsockname()
    print "Serving HTTPS on", sa[0], "port", sa[1]
    server.serve_forever()


if __name__ == '__main__':
    test()


# Here is the client for testing:
import xmlrpclib

server = xmlrpclib.Server('https://localhost:443')
print server.add(1,2)
print server.div(10,4)

------------------------------------------------------------

Now, here are the steps to get running it:

1. Install OpenSSL from www.openssl.org. If you are using Windows, go
to http://www.slproweb.com/products/Win32OpenSSL.html and install the
binary.

2. In order to have our required .pem files, put the following in a
batch file (.sh or .bat) and run it from the directory where openssl is
(unless it is set as an environment variable):

openssl req -config openssl.cnf -new -out my-server.csr
openssl rsa -in privkey.pem -out my-server.key
openssl x509 -in my-server.csr -out my-server.cert -req -signkey
my-server.key -days 1500
openssl x509 -in my-server.cert -out my-server.der.crt -outform DER

mv my-server.csr $1.csr
mv my-server.cert $1.cert.pem
mv my-server.key $1.key.pem
mv my-server.der.crt $1.der.crt

rm privkey.pem
rm -f .rnd

(for .bat, just ignore the last line and use "move" instead of "mv",
"del" instead of "rm" and "yourdomain.com" instead of "$1")

It will generate 4 files. Take the two with .pem extension, and put it
on the same directory as the SecureXMLRPCServer code.

3. In order for get running the code, install pyOpenSSL available at
http://pyopenssl.sourceforge.net/. For Windows you may prefer
http://webcleaner.sourceforge.net/pyOpenSSL-0.6.win32-py2.4.exe

That's it.

Special thanks to Laszlo Nagy

Enjoy!

Daniel Crespo



From bj_666 at gmx.net  Wed Sep 13 03:21:24 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 13 Sep 2006 09:21:24 +0200
Subject: How to compare to directories?
References: <1158127776.413699.170750@e63g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.13.07.21.24.927682@gmx.net>

In <1158127776.413699.170750 at e63g2000cwd.googlegroups.com>, could.net
wrote:

> I want to compare 2 directories: dir1 and dir2.
> What I want to do is to get these informations:
> 1. does they have the same number of files and sub-directories?
> 2. does each file with the same name have the same size and date
> information?

I think `os.listdir()` and the functions in `os.path` will be the tools
you need.

Ciao,
	Marc 'BlackJack' Rintsch


From george.sakkis at gmail.com  Tue Sep  5 13:43:32 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 5 Sep 2006 10:43:32 -0700
Subject: Test for number?
References: <1157390891_40515@sp6iad.superfeed.net>
	<1157399309.305809.76610@74g2000cwt.googlegroups.com>
	<slrnefr2en.1nc.horpner@FIAD06.norwich.edu>
Message-ID: <1157478212.182870.261900@m73g2000cwd.googlegroups.com>

Neil Cerutti wrote:

> On 2006-09-04, George Sakkis <george.sakkis at gmail.com> wrote:
> > x=raw_input('\nType a number from 1 to 20')
> > try:
> >     x = int(x)
> >     if x<1 or x>20: raise ValueError()
> > except ValueError:
> >     Do_B
> > else:
> >     Do_A
> >
> > If you want to distinguish between the two error cases (not a
> > number vs number not in [1,20]), handle the second one as
> > "Do_C" instead of raising ValueError.
>
> Is the original value of x available in Do_B and Do_A, or will it
> have been clobbered before getting there?

In Do_A, x will be an integer between 1 and 20. In Do_B, it depends; if
the original input cannot be converted to an int, it will be preserved,
otherwise x will be an integer (lower than 1 or larger than 20).

George



From steve at holdenweb.com  Sat Sep 30 03:16:58 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 08:16:58 +0100
Subject: retry in exception
In-Reply-To: <slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
References: <451d4294$1@news.vo.lu>
	<slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efl5jl$b0i$1@sea.gmane.org>

Sybren Stuvel wrote:
> Antoine De Groote enlightened us with:
> 
>>I hope I don't upset anybody by comparing Python to Ruby (again). Is 
>>there something like Ruby's retry keyword in Python?
> 
> 
> Please don't assume that everybody knows Ruby through and through...
> 
I didn't see any such assumption in that post. *I* don't know much Ruby, 
but it seems like a perfectly reasonable question, as I know many 
readers *are* proficient in that language.

This is one of those cases where not posting at all would have saved 
everyone some time ;-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From grflanagan at yahoo.co.uk  Sat Sep  9 10:11:25 2006
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: 9 Sep 2006 07:11:25 -0700
Subject: Building Python Based Web Application
In-Reply-To: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
Message-ID: <1157811085.299600.237390@p79g2000cwp.googlegroups.com>

James Stroud wrote:
> Hello All,
>
> I am interested in setting up a modest invoicing system for some
> consulting I am doing. I like the idea of managing this on the web and
> creating invoices and printing them from a browser. However, I'm not
> really sure where to start. I've played with some CMS applications, but
> they seem more for blogging (mamba, wordpress, etc.). Ideally, I would
> like to interface with mySQL (or whatever the favorite web-flavor
> database app is these days). I would like to be able to use my python
> skills.
>
> I confident that if I set out to write this from scatch, I will be
> seriously re-inventing the wheel, perhaps several times over.
>
> So, my question is, does anyone know of a book and/or some kind of
> framework that would make the best sense for what I am describing here?
> I've heard of Zope, but I would like to make sure its appropriate for
> the job before I spend 2 or 3 days getting acquainted with it. I'm adept
> at HTML, python, CSS, python-CGI, and interfacing with mySQL through
> DBI. I'm sure I could get something to work with these skills, but I
> want to minimize wheel re-invention as much as possible.
>
> Basically, I want a jump start on data-base oriented web development
> with a focus on applying my python skills.
>
> Any suggestions will be greatly appreciated.
>
> James
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
>
> http://www.jamesstroud.com/

James,

Karrigell is serving me well at the moment for a low-traffic
intranet/library-cataloguing site. There are different ways of creating
your app (html inside python, python inside html, or Karrigell
services) - personally, I use services exclusively, so:

    library/books.ks/add,  library/books.ks/edit,
library/books.ks/delete
    library/authors.ks/add, library/authors.ks/edit,
library/authors.ks/delete

    etc.

( I think - to the best of my knowledge - these would equate to
'controllers' in other frameworks - BookController, AuthorController...
)

Karrigell will also serve static pages with a simple

    Include( 'mypage.html' )

I've recently set up 'lighttpd' webserver ( http://www.lighttpd.net ),
and this proxies easily to Karrigell with the following in
'lighttpd.conf':

server.modules = ( "mod_proxy" )
static-file.exclude-extensions = ( ".ks" )
$HTTP["url"] =~ "\.ks" {
        proxy.server = ( "" =>
            ((
                  host => "127.0.0.1",
                  port => 8081
            ))
        )
}

ie. "if there is a '.ks' in the url, ask Karrigell, otherwise it's
static so serve it yourself"

I'm also using 'leonardo' (http://leonardo.pyworks.org) as a 'Latest
News' cms - it runs as a cgi script ( which lighttpd will serve via
"mod_cgi":

server.modules = ( "mod_proxy", "mod_cgi")
static-file.exclude-extensions = ( ".ks", ".py", ".cgi" )
cgi-assign = ( ".py" => "/usr/local/bin/python")

(Also useful is my trusty , if imperfect, html generator,
htmlbuilder.py:

    http://gflanagan.net/site/python/htmlbuilder/htmlbuilder.py
)

Hope that helps.

Gerard



From gerold.penz at tirol.utanet.at  Fri Sep  1 03:32:19 2006
From: gerold.penz at tirol.utanet.at (Gerold Penz)
Date: Fri, 01 Sep 2006 09:32:19 +0200
Subject: pysqlite - simple problem
In-Reply-To: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
Message-ID: <ed8nlr$cu$1@newsreader2.utanet.at>

rdrink schrieb:
> num = 200
> cur.execute("INSERT INTO foo (id) VALUES (?)", num)

Hi!

``num`` must be an iterable object (tuple, list, ...).

   num = (200,)
   cur.execute("INSERT INTO foo (id) VALUES (?)", num)

Regards,
Gerold
:-)

-- 
________________________________________________________________________
Gerold Penz - bcom - Programmierung
     gerold.penz at tirol.utanet.at | http://gerold.bcom.at | http://sw3.at
Ehrliche, herzliche Begeisterung ist einer der
     wirksamsten Erfolgsfaktoren. Dale Carnegie


From steve at REMOVEME.cybersource.com.au  Tue Sep 26 00:45:52 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Tue, 26 Sep 2006 14:45:52 +1000
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
Message-ID: <pan.2006.09.26.04.45.52.690588@REMOVEME.cybersource.com.au>

On Mon, 25 Sep 2006 16:11:38 +0200, Christophe wrote:

> Steven D'Aprano a ?crit :
>> By memory, in an thread about the same topic just a few days ago, Fredrik
>> Lundh posted a link to Perl's FAQs that suggests a method for "validating"
>> email addresses: treat it like a password and ask the user to type it
>> twice. That will protect against simple typos and input errors.
> 
> I hate that thing. When I see that, I type my email once and copy/paste 
> into the second edit box. 

So do I -- even for passwords. (Oooh, I live on the edge... *wink*)


> This is useless AND annoying at the same time.

But people like us don't screw up our email address in the first place,
and if we do, we know how to fix it. Not everybody is like us.



-- 
Steven D'Aprano 



From exarkun at divmod.com  Wed Sep 13 11:44:49 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 13 Sep 2006 11:44:49 -0400
Subject: [Twisted-Python] twisted.web2 and blank values in POST
In-Reply-To: <20060913152804.GB25735@crater.logilab.fr>
Message-ID: <20060913154449.1717.2077133268.divmod.quotient.48074@ohm>

On Wed, 13 Sep 2006 17:28:04 +0200, Sylvain Th?nault <sylvain.thenault at logilab.fr> wrote:
>Hi there,
>
>I've found a strange behaviour in twisted web2'server : the behaviour with blank values
>in form parameters is not consistent between GET and POST: on GET blank values are kept while
>this is not the case on POST. I'ld have expected blank values to be kept on POST as well. Is this
>a bug or an expected behavour ?
>
>
>PS: if this is a bug, an easy fix is to add keep_blank_values=True to the
>fileupload.parse_urlencoded call in server.py line 91.

Hi.  You might want to post this to the twisted-web mailing list, instead.

Jean-Paul


From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 05:04:23 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 11:04:23 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
Message-ID: <slrnehhr8n.ln4.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
> The trouble with this is that, instead of offering extra functionality, it
> leaves the door open to making two stupid mistakes:
>
>     2) quoting of wildcards BEFORE quoting of non-wildcards

Why is this a "stupid" mistake in your view? Please explain this in
detail, because I think it's a proper way of doing it.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From rosedb0 at gmail.com  Tue Sep  5 00:01:14 2006
From: rosedb0 at gmail.com (hiaips)
Date: 4 Sep 2006 21:01:14 -0700
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <44FCF02F.90900@kevin-walzer.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
	<1157413341.812545.51970@m73g2000cwd.googlegroups.com>
	<44FCF02F.90900@kevin-walzer.com>
Message-ID: <1157428874.399869.10560@m79g2000cwm.googlegroups.com>


Kevin Walzer wrote:
> hiaips wrote:
> > metaperl.etc at gmail.com wrote:
> >> Earlier I asked about how people installed Python on OS X, given that
> >> one can choose from Xcode, Fink, Darwin, ActiveState and source builds:
> >>
> >> http://groups.google.com/group/comp.lang.python/browse_thread/thread/5c4cde4206d1fbb7/37de06a6bb6b2361?lnk=gst&q=OS+X+and+Python+-+what+is+your+install+strategy%3F&rnum=1#37de06a6bb6b2361
> >>
> >> but before I knew it, I had been sucked in by the ease and vastness of
> >> the Fink repository.
> >>
> >> Now my bliss run has come to a full halt due to these instructions at
> >> `wxPython.org <http://www.wxpython.org/download.php>`_
> >>
> >> Note to Fink users: Versions of Python installed by Fink cannot run
> >> wxPython (unless you install and run X11...). You need to use Apple's
> >> Framework builds, or a third-party Framework build.
> >>
> >> And reading a bit further:
> >>
> >> Python 2.4 Framework builds are available for download from the
> >> undefined.org MacPython site. ActiveState also distributes a Framework
> >> build.
> >>
> >> So I guess I will look into a Framework build as my starting point.
> >
> > I'd really recommend using the universal build from python.org. As a
> > previous poster mentioned, it is a framework build. I've never had any
> > trouble using wxPython in conjunction with it, either.
> >
> The universal build from Python.org is outdated (IIRC). A better, more
> optimized one is available from
> http://pythonmac.org/packages/py24-fat/dmg/Universal-MacPython-2.4.3-2006-04-07.dmg
>
>
>
> --
> Kevin Walzer
> Poetic Code
> http://www.kevin-walzer.com

Outdated??? It's Python 2.4.3 (and they already have a build for
2.5rc1), so I'm not sure what you mean.



From steve at holdenweb.com  Fri Sep  8 11:53:24 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 16:53:24 +0100
Subject: Question about subclassing - version 2
In-Reply-To: <1157727318.559159.257770@i42g2000cwa.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>	<1157702727.358576.24280@m79g2000cwm.googlegroups.com>	<45013a2d$0$27222$636a55ce@news.free.fr>	<1157709228.066561.5810@h48g2000cwc.googlegroups.com>	<45017e8c$0$24467$626a54ce@news.free.fr>
	<1157727318.559159.257770@i42g2000cwa.googlegroups.com>
Message-ID: <eds3ke$1l9$1@sea.gmane.org>

Frank Millman wrote:
> Bruno Desthuilliers wrote:
> 
>>Frank Millman wrote:
>>
>>>I have not gone to the trouble of raising NotImplementedError - the
>>>methods that the subclasses *must* override just have a 'pass'
>>>statement. I guess it would be more correct to raise the error, as it
>>>would give me a quicker indication of an error if I happened to omit
>>>one, but in practice I would find out pretty quickly anyway.
>>
>>Mmm... My own experience is that methods that *must* be redefined are
>>better raising NotImplementedError. Makes things more obvious IMHO.
>>
> 
> 
> Can't argue with that. I have just gone through my app and changed them
> all :-)
> 
Yup, if a thing can't go wrong, it won't

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rupole at hotmail.com  Fri Sep 29 18:10:18 2006
From: rupole at hotmail.com (Roger Upole)
Date: Fri, 29 Sep 2006 18:10:18 -0400
Subject: creating a small test server on my local computer
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
Message-ID: <1159568037_3413@sp6iad.superfeed.net>

"John Salerno" <johnjsal at NOSPAMgmail.com> wrote in message news:efeTg.56$1n3.620 at news.tufts.edu...
> Irmen de Jong wrote:
>> John Salerno wrote:
>>> Ok, this is completely unnecessary so I don't intend to get into stuff that's beyond my skill, but I'm wondering how simple 
>>> it would be to use Python to create a server that runs on my computer so I can test my webpages (because otherwise I have to 
>>> keep sending them to our IT person so he can upload them to the server).
>>
>> Why do you need to use Python for the server?
>
> Well, perhaps I don't know what I'm talking about. I'm on an XP machine and I just needed a way to test my web pages, and I 
> thought Python could be used to create a server to do this. But I know nothing about network programming...

WinXP Pro has a web server that you can install from Add/Remove
Programs in the control panel.  You can use it to do Python CGI or
ASP.

        Roger




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From johnjsal at NOSPAMgmail.com  Thu Sep 28 15:25:17 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 19:25:17 GMT
Subject: preemptive OOP?
In-Reply-To: <451c1a6d$1@nntp.zianet.com>
References: <e9USg.47$1n3.432@news.tufts.edu> <451c1a6d$1@nntp.zianet.com>
Message-ID: <xkVSg.49$1n3.537@news.tufts.edu>

Erik Johnson wrote:

>     My feeling is that there is no good reason to add the complexity of your
> own custom classes if they provide no additional data or behaviour. If you
> know you have plans to add your own attributes and/or methods to MyNotebook
> soon, there's no harm in doing this now, but why? You can always create your
> own custom subclass at the point when you have something of value to add and
> through the mircale of polymorphism, it will function everywhere a Notebook
> would.

I think you're right. In fact, one thing I always loved about Python was 
that OOP is optional, and here I am trying to force it upon myself 
unnecessarily! :)


From rickzolun1 at bellsouth.net  Wed Sep 27 11:40:40 2006
From: rickzolun1 at bellsouth.net (rick)
Date: Wed, 27 Sep 2006 11:40:40 -0400
Subject: optparse
In-Reply-To: <mailman.768.1159332264.10491.python-list@python.org>
References: <C6nSg.79$M31.50@newsfe05.lga>
	<mailman.768.1159332264.10491.python-list@python.org>
Message-ID: <PXwSg.13718$vi3.2977@bignews3.bellsouth.net>

OK, using that convention, how would I create help for <arg1>, <arg2>, etc.

Thanks.

On 9/27/2006 12:44 AM, Ben Finney wrote:
> rick <rickzolun1 at charter.net> writes:
> 
>> usage: DelimTOFixedWidth.py <input filename> <output filename> [options]
> 
> That's not the command-line argument style that optparse models. It
> should be:
> 
>     command_name [options] <arg1> <arg2>
> 
> In other words, the options (optionally) appear before the non-option
> arguments. This is the convention followed by most command-line tools,
> and it's what users expect.
> 
> There are other command-line parser modules (e.g. argparse), perhaps
> you can look to them for different functionality.
> 


From larry at hastings.org  Fri Sep 29 12:09:04 2006
From: larry at hastings.org (Larry Hastings)
Date: 29 Sep 2006 09:09:04 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<mailman.932.1159533269.10491.python-list@python.org>
	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>
	<mailman.954.1159545474.10491.python-list@python.org>
Message-ID: <1159546144.000224.294570@e3g2000cwe.googlegroups.com>

William Heymann wrote:
> This is a pretty small change but I would suggest xrange instead of range.

Good point!  Since I was calling range() during the benchmark, it was
timed too.  Switching to xrange() will mean less overhead.

I re-ran this benchmark (again):
  s = ""
  for i in range(100000):
    s += "a"

The result:
  Python 2.5 release: 30.1s
  Python 2.5 locally built: 30.4s
  Python 2.5 concat: 3.95s
  Improvement: *669%*!  (1/7.7 the time.)

So xrange(10000000) was adding between 0.4s and 0.9s overhead, and
losing it makes my approach look even better.  Thanks!


/larry/



From Bulkan at gmail.com  Wed Sep 27 22:46:14 2006
From: Bulkan at gmail.com (placid)
Date: 27 Sep 2006 19:46:14 -0700
Subject: Starting Win32 Service
In-Reply-To: <1159405639.780556.173260@b28g2000cwb.googlegroups.com>
References: <1159331968.764830.78640@b28g2000cwb.googlegroups.com>
	<mailman.780.1159344410.10491.python-list@python.org>
	<1159405639.780556.173260@b28g2000cwb.googlegroups.com>
Message-ID: <1159411573.991831.47230@i42g2000cwa.googlegroups.com>


placid wrote:
> Tim Golden wrote:
> > [placid]
> > | Using Tim Golden's wmi module you can get the service names
> > |
> > | import wmi
> > | c = wmi.WMI ()
> > | stopped_services = c.Win32_Service (StartMode="Auto", State="Stopped")
> > | if stopped_services:
> > |   for s in stopped_services:
> > |     print s.Caption, "service is not running"
> > | else:
> > |   print "No auto services stopped"
> > |
> > | but how do i start services that are stopped?
> >
> > <code>
> > import wmi
> > c = wmi.WMI ()
> > for method in c.Win32_Service._methods:
> >   print method
> >
> > #
> > #... includes StartService
> > #
> >
> > print c.Win32_Service.StartService
> >
> > # <function StartService () => (ReturnValue)>
> >
> > #
> > # Therefore, to start all non-running auto services (!)
> > #
> > for service in c.Win32_Service (StartMode="Auto", State="Stopped"):
> >   print service.Caption
> >   service.StartService ()
> >
> > </code>
> >
> > TJG
> >
>
> Thanks for that.
>
> Now i was trying to use service.ChangeStartMode but each time i pass in
> an argument i get the error;
>
> #TypeError: __call__() takes exactly 1 argument (2 given)
>
> but;
>
> >>> print service.ChangeStartMode
> <function ChangeStartMode (StartMode) => (ReturnValue)>
>
> ChangeStartMode needs an argument!
>
> What im i doing wrong here?

And to answer my own question, the way to pass in arguments is via the
key=value way so;

service.ChangeStartMode(StartMode = "Automatic")

Cheers

P.S: Dont you just love trial and error/brute force?



From anthonybaxter at gmail.com  Tue Sep 26 08:00:55 2006
From: anthonybaxter at gmail.com (Anthony Baxter)
Date: Tue, 26 Sep 2006 22:00:55 +1000
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159271339.775493.132180@i3g2000cwc.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159271339.775493.132180@i3g2000cwc.googlegroups.com>
Message-ID: <e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>

This seems to be a very, very silly original post. I know of plenty of
people who make a living programming Python. It's been the vast
majority of the programming (for money) I've done in the last ten
years, and there's countless other people I know here in Melbourne in
the same position.


From sjmachin at lexicon.net  Mon Sep 18 09:55:59 2006
From: sjmachin at lexicon.net (John Machin)
Date: 18 Sep 2006 06:55:59 -0700
Subject: Automatically installing libraries?
In-Reply-To: <WlxPg.8305$4a3.6056@trnddc07>
References: <WlxPg.8305$4a3.6056@trnddc07>
Message-ID: <1158587759.138342.324990@h48g2000cwc.googlegroups.com>


Chaz Ginger wrote:
> Here is a problem I am trying to solve; I am sure there must be an easy
> way to do it and I just don't know how.
>
> I have a rather large application that I am writing. To make it easy for
> the user to run I have them run a startup.py script. This script will
> try to load each of the third party libraries the application will need.
> If it is present, great. If it isn't, I would like to automatically
> install it. This is the heart of my problem: is there a Python
> equivalent to PERL's CPAN?
>

Check out setuptools:
http://peak.telecommunity.com/DevCenter/setuptools

HTH,
John



From david.bear at asu.edu  Thu Sep 28 13:57:19 2006
From: david.bear at asu.edu (David Bear)
Date: Thu, 28 Sep 2006 10:57:19 -0700
Subject: help tranlating perl expressions
References: <5452284.reKt6RD0Uf@teancum>
	<mailman.896.1159464389.10491.python-list@python.org>
Message-ID: <1800861.WleMJbM9Ti@teancum>

Fredrik Lundh wrote:

> David Bear wrote:
> 
>  > I am trying to translate some perl code to python and I need some
>  > advice on making fixed sized strings.
> 
> looks like you're reimplementing HMAC; there's no need to do that in
> Python, really, since it's part of the standard library:
> 
>      http://docs.python.org/lib/module-hmac.html
> 
> pass in hashlib.sha1 instead of the default, and you're done.
> 
> if you insist on doing it yourself, read on:
> 
>>  my $ipad = chr(0x36)x$blen;
>>  my $opad = chr(0x5c)x$blen;
>> 
>> I don't know if I ever seen any way in python of created a fixed size
>> string. Can anyone show me how to implement the same statements in
>> python?
> 
> just remove all the junk, and use multiply instead of "x":
> 
>      ipad = chr(0x36) * blen
>      opad = chr(0x5c) * blen
> 
> however, Python strings are not mutable, so to implement the rest of
> that algorithm, you probably want to use a list or array object instead.
>   the md5-example-4.py script on this page shows one way to do that:
> 
>      http://effbot.org/librarybook/md5.htm
> 
> to get a SHA-1 hmac, you have to replace "md5" with "sha".
> 
> </F>

Yes, this is what I am doing. Because I am using code sold to me by a vendor
-- I was worried that they are doing something with it that had some
dependencies on the way perl was making the digest. So I was trying to
better understand the perl by doing it in python.

-- 
David Bear
-- let me buy your intellectual property, I want to own your thoughts --


From bob at passcal.nmt.edu  Thu Sep  7 13:56:56 2006
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Thu, 7 Sep 2006 11:56:56 -0600
Subject: Two ethernet cards/networks (still)
Message-ID: <M6CdnZKD9p1rwZ3YnZ2dnUVZ_sednZ2d@nmt.edu>

There is a lot to stuff that seems to skirt around this issue (most of which 
has to do with finding your IP address), but I can't find anything that 
explains how to write a client that (in my case) needs to collect some 
information from some equipment on a private network/Ethernet card, then 
transmit that info on the other Ethernet card/"outside" network to another 
program (which will put it into a db).

"binding to a specific address is almost never used for a client", sez 
Foundations of Python Network Programming, but is that how it's done??  Each 
card has a fixed IP address.  It's on Windows at this time if that makes any 
difference.

Thanks!

Bob




From g.brandl-nospam at gmx.net  Sat Sep 30 04:33:50 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sat, 30 Sep 2006 10:33:50 +0200
Subject: why logging re-raise my exception and can't be caught?
In-Reply-To: <mailman.997.1159604320.10491.python-list@python.org>
References: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>	<87ac4hkd8w.fsf@benfinney.id.au>
	<mailman.997.1159604320.10491.python-list@python.org>
Message-ID: <efla5g$v4o$1@news.albasani.net>

Steve Holden wrote:
> Ben Finney wrote:
> [...]
>> A 'try ... except' statement is not an exception handler. [...]
> 
> Just as a matter of interest, what would your definition of an exception 
> handler be, then? Specifically, what's the "except" clause for?
> 
> The docs for looging.except should make it explicit that the exception 
> will be re-raised.
> 
> Of course it might be possible to do something hackish like
> 
>      try:
>          ...
>      except:
>          try:
>              logging.exception(...)
>          except:
>              pass
> 
> which (although untested) should theoretically allow the catching (for a 
> second time) of teh exception reraised by logging.exception().

Use the source, people. The exception is not reraised. The only effect of
exception() versus error() is that exception() passes the "exc_info=1" keyword
argument to error() which means that the stack trace is added to the
logging message.

The default logger prints to stdout, which is why the stack trace is printed
there too.

(In the sense of the logging docs, an except:-clause *IS* an error handler).

Georg


From paddy3118 at netscape.net  Fri Sep  1 14:18:20 2006
From: paddy3118 at netscape.net (Paddy)
Date: 1 Sep 2006 11:18:20 -0700
Subject: Python style: to check or not to check args and data members
In-Reply-To: <ed91hj$hdo$1@news.lysator.liu.se>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
Message-ID: <1157134700.881039.131440@m73g2000cwd.googlegroups.com>


Joel Hedlund wrote:
>
> Hmmm... So. I should build grimly paranoid parsers for external data, use
> duck-typed interfaces everywhere on the inside, and simply callously
> disregard developers who are disinclined to read documentation? I could do that.
>
>  > if you're really serious, unit tests is the way to go - they can check
>  > for much more than just types.
>
> Yes, I'm very much serious indeed. But I haven't done any unit testing. I'll
> have to check into that. Thanks!
>

You might try doctests, they can be easier to write and fit into the
unit test framework if needed.
http://en.wikipedia.org/wiki/Doctest

- Paddy.



From raschulmanxx at verizon.net  Tue Sep  5 23:47:09 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Wed, 06 Sep 2006 03:47:09 GMT
Subject: Unicode string handling problem
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
	<1157506499.619835.62950@e3g2000cwe.googlegroups.com>
Message-ID: <7iesf2d82cegjj3haubc6rhcbkk3lcq230@4ax.com>

Thanks for your excellent debugging suggestions, John. See below for
my follow-up:

Richard Schulman:
>> The following program fragment works correctly with an ascii input
>> file.
>>
>> But the file I actually want to process is Unicode (utf-16 encoding).
>> The file must be Unicode rather than ASCII or Latin-1 because it
>> contains mixed Chinese and English characters.
>>
>> When I run the program below I get an attribute_count of zero, which
>> is incorrect for the input file, which should give a value of fifteen
>> or sixteen. In other words, the count function isn't recognizing the
>> ", characters in the line being read. Here's the program:
>>...

John Machin:
>Insert
>    print type(in_line)
>    print repr(in_line)
>here [also make the appropriate changes to get the same info from the
>first line], run it again, copy/paste what you get, show us what you
>see.

Here's the revised program, per your suggestion:

=====================================================

# This program processes a UTF-16 input file that is
# to be loaded later into a mySQL table. The input file
# is not yet ready for prime time. The purpose of this
#  program is to ready it.

in_file = open("c:\\pythonapps\\in-graf1.my","rU")
try:
    # The first line read is a SQL INSERT statement; no
    # processing will be required.
    in_line = in_file.readline()
    print type(in_line)  #For debugging
    print repr(in_line)  #For debugging
    
    # The second line read is the first data row.	
    in_line = in_file.readline()
    print type(in_line)  #For debugging
    print repr(in_line)  #For debugging

    # For this and subsequent rows, we must count all
    # the < ", > character-pairs in a given line/row.
    # This  will provide an n-1 measure of the attributes
    # for a SQL insert of this row. All rows must have 
    # sixteen attributes, but some don't yet.
    attribute_count = in_line.count('",')
    print attribute_count
finally:
    in_file.close()

=====================================================

The output of this program, which I ran at the command line,
must needs to be copied by hand and abridged, but I think I
have included the relevant information:

C:\pythonapps>python graf_correction.py
<type 'str'>
'\xff\xfeI\x00N\x00S...   [the beginning of a SQL INSERT statement]
...\x00U\x00E\x00S\x00\n' [the VALUES keyword at the end of the row,
                           followed by an end-of-line]
<type 'str'>
'\x00\n'                  [oh-oh! For the second row, all we're seeing
                           is an end-of-line character. Is that from
                           the first row? Wasn't the "rU" mode
                           supposed to handle that]
0                         [the counter value. It's hardly surprising
                           it's only zero, given that most of the row
                           never got loaded, just an eol mark]

J.M.:
>If you're coy about that, then you'll have to find out yourself if it
>has a BOM at the front, and if not whether it's little/big/endian.

The BOM is little-endian, I believe.

R.S.:
>> Any suggestions?

J.M.
>1. Read the Unicode HOWTO.
>2. Read the docs on the codecs module ...
>
>You'll need to use
>
>in_file = codecs.open(filepath, mode, encoding="utf16???????")

Right you are. Here is the output produced by so doing:

<type 'unicode'>
u'\ufeffINSERT INTO [...] VALUES\N'
<type 'unicode'>
u'\n' 
0   [The counter value]

>It would also be a good idea to get into the habit of using unicode
>constants like u'",'

Right.

>HTH,
>John

Yes, it did. Many thanks! Now I've got to figure out the best way to
handle that \n\n at the end of each row, which the program is
interpreting as two rows. That represents two surprises: first, I
thought that Microsoft files ended as \n\r ; second, I thought that
Python mode "rU" was supposed to be the universal eol handler and
would handle the \n\r as one mark.

Richard Schulman


From tiarno at sas.com  Wed Sep 13 09:46:09 2006
From: tiarno at sas.com (Tim Arnold)
Date: Wed, 13 Sep 2006 09:46:09 -0400
Subject: xinclude and pathnames
Message-ID: <ee9231$mpj$1@foggy.unx.sas.com>

I'm using ElementTree to access some xml configuration files, and using the 
module's xinclude capability. I've got lines like this in the parent xml 
file (which lives in the same directory as the included xml file):
<xi:include href="/dept/app/doc/current/en/xml/asdf/asdf_syntaxterms.xml"/>

When I started the project it was Unix-only; this worked fine. Now I have 
users who want to use the system on Windows and of course that directory 
path doesn't exist on Windows, but it is available on the network using a 
name like \\ladida\current\en\xml\asdf\asdf_syntaxterms.xml

if relative paths worked, I could imagine
<xi:include href="asdf_syntaxterms.xml" /> would work.
Also,the file can be read via an http server.

My question: is there a way to make xinclude work with relative paths or 
perhaps urls?
Any ideas welcome--to me it looks like I'll have to restructure this part of 
the system since I've basically programmed myself into a corner.

thanks,
--Tim Arnold




From sjmachin at lexicon.net  Fri Sep 15 10:50:24 2006
From: sjmachin at lexicon.net (John Machin)
Date: 15 Sep 2006 07:50:24 -0700
Subject: add without carry
In-Reply-To: <1158328944.024522.5300@d34g2000cwd.googlegroups.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<450a7dec$0$14661$626a54ce@news.free.fr>
	<slrnegl4na.qdk.jon+usenet@snowy.squish.net>
	<1158328944.024522.5300@d34g2000cwd.googlegroups.com>
Message-ID: <1158331824.694245.265770@p79g2000cwp.googlegroups.com>


Jason wrote:
> Jon Ribbens wrote:
> > In article <450a7dec$0$14661$626a54ce at news.free.fr>, Bruno Desthuilliers wrote:
> > >
> > > No need to think too long to come up with the most possibly Q&D solution:
> > >
> > > res = int(str(5 + 7)[-1])
> >
> > Am I missing something subtle in the question or is there some reason
> > that nobody has posted the correct solution:
> >
> >   (a + b) % 10
> >
> > ?
>
> You're not missing anything.  That's the obvious solution.  We're just
> celebrating our non-Dutchness at the moment.
>
> >>> def bound(value, maxBound):
> ...     while value > maxBound:

Does non-Dutchness require or permit bugs like > instead of >= or are
you merely having a braino?

> ...         value -= maxBound
> ...     return value
> ...
> >>> bound(5 + 6, 10)
> 1
> >>> bound(8 + 7, 10)
> 5
> 
> See?  I'm definitely not Dutch.
> 
>     --Jason



From jstroud at mbi.ucla.edu  Wed Sep 27 00:20:39 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 04:20:39 GMT
Subject: What's up with site.Quitter?
Message-ID: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>

Hello All,

Still jubilantly configuring my work environment for python 2.5, I came 
accross a curiosity when writing an automatic vim syntax file creator 
(so I can automatically update my syntax coloring with future python 
releases).

It seems I can find a reference to just about every type except those 
for "exit" and "quit" in the standard library somewhere. E.g.:

py> type(__builtins__.Ellipsis) is types.EllipsisType
True

However, in an appearant break with consistency, this can not be done 
for "exit" and "quit" because site.Quitter is nested inside of the 
setquit() function in the site.py module.

Would moving this class definition to module level be something that 
would meet with great resistance?

I was thinking of posting to python-dev, but that list looked pretty 
high-level.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From skip at pobox.com  Tue Sep 12 13:50:14 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 12 Sep 2006 12:50:14 -0500
Subject: best way of testing a program exists before using it?
In-Reply-To: <Xns983CBC6CB40B9duncanbooth@127.0.0.1>
References: <mailman.362.1158074341.5279.python-list@python.org>
	<Xns983CBC6CB40B9duncanbooth@127.0.0.1>
Message-ID: <17670.62294.365268.373313@montanaro.dyndns.org>

    Duncan> ... but it does seem odd as it provides a way of verifying the
    Duncan> existence of files when you can't list the directory.

What's odd about security bugs in Windows?

Skip


From spare_the_rod at spoilthechild.com  Sun Sep 17 05:27:09 2006
From: spare_the_rod at spoilthechild.com (Guy Fawkes)
Date: Sun, 17 Sep 2006 11:27:09 +0200
Subject: Python programs always open source?
Message-ID: <450d07e1$0$19729$88260bb3@free.teranews.com>

Hi,

I was wondering if Python programs always need to include the source code 
with the program itself. I'm asking this because I don't want my program to 
be open-source and so far all the Python programs I've seen included the 
source code.

Is it possible to make an executable with only bytecode?

Thanks in advance!

GF 



-- 
Posted via a free Usenet account from http://www.teranews.com



From horpner at yahoo.com  Thu Sep 28 14:33:49 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 28 Sep 2006 20:33:49 +0200
Subject: how do you know if open failed?
References: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
Message-ID: <slrneho5de.1p0.horpner@FIAD06.norwich.edu>

On 2006-09-28, SpreadTooThin <bjobrien62 at gmail.com> wrote:
> f = open('myfile.bin', 'rb')
>
> How do I know if there was an error opening my file?

Try it an see.

Seriously, it will raise an exception that you can catch.

try:
  f = open('myfile.bin', 'rb')
  # Do stuff with f
except IOError, inst:
  print 'Phooey.', inst.errno, inst.strerror

-- 
Neil Cerutti


From tgrav at mac.com  Wed Sep 27 11:51:27 2006
From: tgrav at mac.com (Tommy Grav)
Date: Wed, 27 Sep 2006 11:51:27 -0400
Subject: does anybody earn a living programming in python?
In-Reply-To: <pan.2006.09.27.14.20.10.789105@REMOVE.THIS.cybersource.com.au>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159271339.775493.132180@i3g2000cwc.googlegroups.com>
	<mailman.669.1159272062.10491.python-list@python.org>
	<pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>
	<roy-E62177.09172727092006@reader2.panix.com>
	<pan.2006.09.27.14.20.10.789105@REMOVE.THIS.cybersource.com.au>
Message-ID: <58933CB0-D661-4E57-8221-3B5BA26BA40A@mac.com>


On Sep 27, 2006, at 10:20 AM, Steven D'Aprano wrote:

> On Wed, 27 Sep 2006 09:17:28 -0400, Roy Smith wrote:
>>
>> Countless and uncountable are not the same thing.  The former  
>> simply means
>> you haven't bothered to count them yet, which as a basis for  
>> number theory,
>> sounds like it belongs in a Douglas Adams book.
>
> You're thinking of "uncounted", which means "not counted yet". The
> dictionary definition of countless is "too many to count" (Pocket  
> Oxford),
> which I suppose could be 11 for some people if they didn't take their
> shoes and socks off. Mathematically, any finite integer is able to be
> counted, so "countless" is equivalent to "infinite in number".

This is definitively faulty logic. The number could be countless do  
the other reasons
like time constraints and so on :)

Cheers
Tommy


tgrav at mac.com
http://homepage.mac.com/tgrav/

"Any intelligent fool can make things bigger,
more complex, and more violent. It takes a
touch of genius -- and a lot of courage --
to move in the opposite direction"
                          -- Albert Einstein


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From Eric_Dexter at msn.com  Sun Sep 10 16:41:07 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 10 Sep 2006 13:41:07 -0700
Subject: [Fwd: Problems with PyGridTableBase]
In-Reply-To: <mailman.209.1157809833.5279.python-list@python.org>
References: <mailman.209.1157809833.5279.python-list@python.org>
Message-ID: <1157920867.793820.189080@p79g2000cwp.googlegroups.com>

Hopefully this helps keep your post alive..  I looked all over the
internet for examples written with wxgrid and wxgrid with python and
haven't realy found out how to add the other functions to a
boa-constructor program there just isn't anything except the simple
example incuded with boa.  This is as far as I got and I am not sure I
am very close (with my example trying to add the extra functions to the
class instead of inheriting it from grid)

#Boa:Frame:Frame3

import wx
import wx.grid

def create(parent):
    return Frame3(parent)

[wxID_FRAME3, wxID_FRAME3BUTTON1, wxID_FRAME3GRID1,
wxID_FRAME3TEXTCTRL1,
] = [wx.NewId() for _init_ctrls in range(4)]

class Frame3(wx.Frame):
    def _init_ctrls(self, prnt):
        # generated method, don't edit
        wx.Frame.__init__(self, id=wxID_FRAME3, name='', parent=prnt,
              pos=wx.Point(401, 118), size=wx.Size(367, 585),
              style=wx.DOUBLE_BORDER, title=u'')
        self.SetClientSize(wx.Size(361, 579))

        self.grid1 = wx.grid.Grid(id=wxID_FRAME3GRID1, name='grid1',
              parent=self, pos=wx.Point(8, 16), size=wx.Size(80, 392),
              style=wx.WANTS_CHARS | wx.TRANSPARENT_WINDOW |
wx.MINIMIZE_BOX | wx.DOUBLE_BORDER | wx.VSCROLL)

        self.textCtrl1 = wx.TextCtrl(id=wxID_FRAME3TEXTCTRL1,
name='textCtrl1',
              parent=self, pos=wx.Point(112, 16), size=wx.Size(232,
392),
              style=wx.TE_LINEWRAP, value=u'')
        self.textCtrl1.SetThemeEnabled(False)
        self.textCtrl1.SetCursor(wx.CROSS_CURSOR)

        self.button1 = wx.Button(id=wxID_FRAME3BUTTON1, label=u'exit',
              name='button1', parent=self, pos=wx.Point(72, 440),
              size=wx.Size(136, 23), style=0)
        self.button1.Bind(wx.EVT_BUTTON, self.OnButton1Button,
              id=wxID_FRAME3BUTTON1)

    def __init__(self, parent):
        self._init_ctrls(parent)
        self.grid1.CreateGrid(0, 1)

    def OnButton1Button(self, event):
        self.Close()
    def update_instument_list(csndname):
        csdInstrumentList(csndname) #needs to have a file variable..
        noinlist=0
        for number in range(0,noinlist):
             self.grid1.AppendRows(1)
             self.grid1.SetCellValue(number,0,instrlist[number])

http://www.dexrow.com



Mario Lacunza wrote:
> --------- Mensaje reenviado --------
> De: Mario Lacunza <mario.lacunza at gmail.com>
> Para: Lista Python Ing <python-list at python.org>
> Asunto: Problems with PyGridTableBase
> Fecha: Sat, 09 Sep 2006 00:03:20 -0500
>
> Hello,
>
> I attach two files:frmClientes and frmClientesNE.
>
> frmClientes charge a Grid with resume Costumers data: Name, Commercial
> ID, address, etc. and edition options.
>
> frmClientes in
>
> Line 178
> def OnBtnNuevoButton(self, event):
>
> call to frmClientesNE. Its append a new record to the database and clear
> all controls and when I close it, the grid in frmClientes: grClte must
> be recharge with the new data, but that dont work. Only work when a
> Delete some record.
>
> I couldnt send yours a runable .py version, because both of them files
> pickup data from a Firebird's database.
>
> I try to implement the wxPython Demo model: Grid_MegaExample, follow
> that my class Grilla must be:
>
> Line 224:
> class Grilla(Grid.Grid):
>
> but for the Boa Constructors controls creation I couldnt inherit from
> Grid.Grid, thats my problem, I need your help I try for two days and
> nothing :-( ... some ideas??
>
> Thanks in advance!!
>
> ======================================================================
> FILE: FRMCLIENTES.PY
> ======================================================================
>
> # -*- coding: utf8 -*-#
> #Boa:Frame:frmClientes
>
> __version__='0.5'
> __autor__='Mario Lacunza Vasquez <mlacunza at gmail.com>'
>
> import wx
> import wx.grid
> import modGlobals
> from Conectar import Conectar
> import errores
>
> def create(parent):
>     return frmClientes(parent)
>
> [wxID_FRMCLIENTES, wxID_FRMCLIENTESBRNSALIR, wxID_FRMCLIENTESBTNBORRAR,
>  wxID_FRMCLIENTESBTNEDIT, wxID_FRMCLIENTESBTNNUEVO,
> wxID_FRMCLIENTESGRCLTE,
>  wxID_FRMCLIENTESLBLTITULO, wxID_FRMCLIENTESPANEL1,
> ] = [wx.NewId() for _init_ctrls in range(8)]
>
> class frmClientes(wx.Frame):
>     def _init_coll_fsGrid_Growables(self, parent):
>         # generated method, don't edit
>
>         parent.AddGrowableRow(0)
>
>     def _init_coll_fsGrid_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.grClte, 0, border=2, flag=wx.EXPAND |
> wx.ALL)
>
>     def _init_coll_fsBtn_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.btnNuevo, 0, border=2, flag=wx.EXPAND |
> wx.ALL)
>         parent.AddWindow(self.btnEdit, 0, border=2, flag=wx.EXPAND |
> wx.ALL)
>         parent.AddWindow(self.btnBorrar, 0, border=2, flag=wx.EXPAND |
> wx.ALL)
>         parent.AddWindow(self.brnSalir, 0, border=2, flag=wx.EXPAND |
> wx.ALL)
>
>     def _init_coll_fsTit_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.lblTitulo, 0, border=6, flag=wx.EXPAND)
>
>     def _init_coll_bsClte_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.panel1, 1, border=0, flag=wx.EXPAND)
>
>     def _init_coll_fsTit_Growables(self, parent):
>         # generated method, don't edit
>
>         parent.AddGrowableRow(0)
>
>     def _init_coll_fsClte_Growables(self, parent):
>         # generated method, don't edit
>
>         parent.AddGrowableRow(0)
>         parent.AddGrowableRow(1)
>         parent.AddGrowableRow(2)
>         parent.AddGrowableCol(0)
>
>     def _init_coll_fsClte_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddSizer(self.fsTit, 1, border=5,
>               flag=wx.ALIGN_CENTER_HORIZONTAL)
>         parent.AddSizer(self.fsGrid, 1, border=10,
>               flag=wx.ALIGN_CENTER_HORIZONTAL)
>         parent.AddSizer(self.fsBtn, 1, border=5,
>               flag=wx.ALIGN_CENTER_HORIZONTAL)
>
>     def _init_sizers(self):
>         # generated method, don't edit
>         self.bsClte = wx.BoxSizer(orient=wx.VERTICAL)
>
>         self.fsClte = wx.FlexGridSizer(cols=1, hgap=0, rows=0, vgap=0)
>
>         self.fsTit = wx.FlexGridSizer(cols=1, hgap=0, rows=0, vgap=0)
>
>         self.fsGrid = wx.FlexGridSizer(cols=1, hgap=5, rows=0, vgap=5)
>
>         self.fsBtn = wx.FlexGridSizer(cols=4, hgap=0, rows=0, vgap=0)
>
>         self._init_coll_bsClte_Items(self.bsClte)
>         self._init_coll_fsClte_Growables(self.fsClte)
>         self._init_coll_fsClte_Items(self.fsClte)
>         self._init_coll_fsTit_Growables(self.fsTit)
>         self._init_coll_fsTit_Items(self.fsTit)
>         self._init_coll_fsGrid_Growables(self.fsGrid)
>         self._init_coll_fsGrid_Items(self.fsGrid)
>         self._init_coll_fsBtn_Items(self.fsBtn)
>
>         self.SetSizer(self.bsClte)
>         self.panel1.SetSizer(self.fsClte)
>
>     def _init_ctrls(self, prnt):
>         # generated method, don't edit
>         wx.Frame.__init__(self, id=wxID_FRMCLIENTES,
> name=u'frmClientes',
>               parent=prnt, pos=wx.Point(352, 148), size=wx.Size(589,
> 514),
>               style=wx.DEFAULT_FRAME_STYLE, title=u'Clientes')
>         self.SetClientSize(wx.Size(589, 514))
>
>         self.panel1 = wx.Panel(id=wxID_FRMCLIENTESPANEL1, name='panel1',
>               parent=self, pos=wx.Point(0, 0), size=wx.Size(589, 514),
>               style=wx.TAB_TRAVERSAL)
>
>         self.lblTitulo = wx.StaticText(id=wxID_FRMCLIENTESLBLTITULO,
> label=u'',
>               name=u'lblTitulo', parent=self.panel1, pos=wx.Point(258,
> 0),
>               size=wx.Size(72, 19), style=0)
>         self.lblTitulo.Center(wx.HORIZONTAL)
>         self.lblTitulo.SetFont(wx.Font(12, wx.SWISS, wx.NORMAL, wx.BOLD,
> False,
>               u'Sans'))
>
>         self.grClte = wx.grid.Grid(id=wxID_FRMCLIENTESGRCLTE,
> name=u'grClte',
>               parent=self.panel1, pos=wx.Point(10, 63),
> size=wx.Size(568, 326),
>               style=0)
>         self.grClte.EnableEditing(False)
>         self.grClte.Bind(wx.grid.EVT_GRID_SELECT_CELL,
>               self.OnGrClteGridSelectCell)
>
>         self.btnNuevo = wx.Button(id=wxID_FRMCLIENTESBTNNUEVO,
> label=u'Nuevo',
>               name=u'btnNuevo', parent=self.panel1, pos=wx.Point(118,
> 435),
>               size=wx.Size(85, 34), style=0)
>         self.btnNuevo.SetToolTipString(u'Nuevo Cliente')
>         self.btnNuevo.Bind(wx.EVT_BUTTON, self.OnBtnNuevoButton,
>               id=wxID_FRMCLIENTESBTNNUEVO)
>
>         self.btnEdit = wx.Button(id=wxID_FRMCLIENTESBTNEDIT,
> label=u'Editar',
>               name=u'btnEdit', parent=self.panel1, pos=wx.Point(207,
> 435),
>               size=wx.Size(85, 34), style=0)
>         self.btnEdit.SetToolTipString(u'Editar Cliente')
>         self.btnEdit.Bind(wx.EVT_BUTTON, self.OnBtnEditButton,
>               id=wxID_FRMCLIENTESBTNEDIT)
>
>         self.btnBorrar = wx.Button(id=wxID_FRMCLIENTESBTNBORRAR,
>               label=u'Eliminar', name=u'btnBorrar', parent=self.panel1,
>               pos=wx.Point(296, 435), size=wx.Size(85, 34), style=0)
>         self.btnBorrar.SetToolTipString(u'Eliminar Cliente')
>         self.btnBorrar.Bind(wx.EVT_BUTTON, self.OnBtnBorrarButton,
>               id=wxID_FRMCLIENTESBTNBORRAR)
>
>         self.brnSalir = wx.Button(id=wxID_FRMCLIENTESBRNSALIR,
> label=u'Salir',
>               name=u'brnSalir', parent=self.panel1, pos=wx.Point(385,
> 435),
>               size=wx.Size(85, 34), style=0)
>         self.brnSalir.SetToolTipString(u'Salir')
>         self.brnSalir.Bind(wx.EVT_BUTTON, self.OnBrnSalirButton,
>               id=wxID_FRMCLIENTESBRNSALIR)
>
>         self._init_sizers()
>
>     def __init__(self, parent):
>         self._init_ctrls(parent)
>
>         self.CrearGrid()
>
> #-------------------------------------------------------------------------------
>     def CrearGrid(self):
>         #Setea la Tabla para el Grid
>         self.table = Tabla()
>         self.grClte.SetTable(self.table, True)
>
>         #Setea el ancho de las columnas del Grid
>         self.grClte.SetColSize(0,50)
>         self.grClte.SetColSize(2,150)
>         self.grClte.SetColSize(4,250)
>
> #-------------------------------------------------------------------------------
>
>     def OnBtnNuevoButton(self, event):
>         #Nuevo
>         import frmClientesNE
>         x=frmClientesNE.create(None,"N")
>         x.Show()
>
>     def OnBtnEditButton(self, event):
>         #Editar
>         import frmClientesNE
>         x=frmClientesNE.create(None,"E",self.Valor)
>         x.Show()
>
>     def OnBtnBorrarButton(self, event):
>         self.oD=D_Cltes()
>
>         dlg=wx.MessageDialog(self,u'?Est? seguro de eliminar este
> Cliente?', \
>         'PymeGestor',wx.YES_NO | wx.ICON_QUESTION)
>         rpta=dlg.ShowModal()
>         if (rpta==wx.ID_YES):
>             self.oD.Borrar(self.Valor)
>             dlg2=wx.MessageDialog(self,u'El Cliente fue el eliminado con
> ?xito.', \
>             'PymeGestor',wx.OK | wx.ICON_INFORMATION)
>             dlg2.ShowModal()
>             dlg2.Destroy()
>         else:
>             pass
>
>         dlg.Destroy()
>
>     def OnBrnSalirButton(self, event):
>         self.Close(True)
>
>     def OnGrClteGridSelectCell(self, event):
>         #Obtiene el valor de la celda seleccionada.
>         self.R=event.GetRow()
>         #Fija como 0 la celda q contiene el campo ID.
>         self.C = 0
>
>         self.Valor=self.table.GetValue(self.R,self.C)
>
>         event.Skip()
>
>
> #-------------------------------------------------------------------------------
> #-------------------------------------------------------------------------------
> class Tabla(wx.grid.PyGridTableBase):
>     """Clase que maneja la grilla de Datos."""
>
>     def __init__(self):
>         wx.grid.PyGridTableBase.__init__(self)
>
>         self.oCltes=D_Cltes()
>         self.data=self.oCltes.CargarClientes()
>
>         #Setea el Numero de Columnas a mostrar por el SQL
>         self.Columnas=7
>
>         #Setea los titulos del Grid
>         self.colLabels = ["ID", "CODIGO", "CLIENTE", "NRO.DOC.",
> "DIRECCION", "TELEFONO","EMAIL"]
>
>     def GetNumberRows(self):
>         r=len(self.data)
>         return r
>
>     def GetNumberCols(self):
>         return self.Columnas
>
>     def IsEmptyCell(self, row, col):
>         return False
>
>     def GetValue(self, row, col):
>         #Muestra los datos devueltos por el Recordset
>         value=self.data[row][col]
>         if value is not None:
>             return value
>         else:
>             return ''
>
>     def SetValue(self, row, col, value):
>         try:
>             self.data[row][col] = value
>         except IndexError:
>             # add a new row
>             self.data.append([''] * self.GetNumberCols())
>             self.SetValue(row, col, value)
>             # tell the grid we've added a row
>             msg = wxGridTableMessage(self,            # The table
>                     wxGRIDTABLE_NOTIFY_ROWS_APPENDED, # what we did to
> it
>                     1                                       # how many
>                     )
>             self.GetView().ProcessTableMessage(msg)
>
>     def GetColLabelValue(self, col):
>         return self.colLabels[col]
>
> #-------------------------------------------------------------------------------
> #-------------------------------------------------------------------------------
>
> class O_Cltes:
>     """Clase de Negocios para el manejo de los Clientes."""
>     def __init__(self):
>         """ Constructor."""
>
>
> #-------------------------------------------------------------------------------
> #-------------------------------------------------------------------------------
>
> class D_Cltes:
>     """Maneja las operaciones con clientes."""
>
>     mCodigo=None
>     mNombre=None
>     mTipoDoc=None
>     mNumDoc=None
>     mDireccion=None
>     mPostal=None
>     mFono1=None
>     mFono2=None
>     mFax=None
>     mEmail=None
>     mCelular=None
>     mWeb=None
>     mLinCredito=None
>
>     def __init__(self):
>         """ Constructor."""
>
>         #Instancia la Clase
>         self.cnn=Conectar()
>
>         #Obtiene cadena de Conexion
>         self.cnn.__class__.cnn=modGlobals.CNN
>
> #-------------------------------------------------------------------------------
>
>     def CargarClientes(self):
>         """Genera lista de Clientes."""
>
>         sql="Select ID, Codigo, Nombre, NumDoc, Direccion, Fono1, Email
> from tblClientes"
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL()
>             return rs
>
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
> #-------------------------------------------------------------------------------
>     def Borrar(self, mCod):
>         """Borra Cliente de la Bd."""
>
>         sql="Delete from tblClientes Where ID=%d"%(mCod)
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL('Delete')
>             return True
>
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
> #-------------------------------------------------------------------------------
>
>     def CargaTDoc(self):
>
>         sql="Select ID, Detalle from tblTipoDoc"
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL()
>             return rs
>
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
>
> #-------------------------------------------------------------------------------
>
>     def Graba(self):
>         """Graba los datos."""
>
>         #Obtiene el codigo
>         self.__class__.mCodigo=self.GeneraCod()
>
>         sql="Insert into tblClientes(ID, CODIGO, NOMBRE, TIPODOC,
> NUMDOC, DIRECCION, POSTAL,\
>         FONO1,FONO2,FAX, EMAIL, CELULAR, WEB, LINCREDITO)\
>         VALUES(GEN_ID(GEN_TBLCLIENTES_ID,1),\
>         '%s', '%s', %d, '%s', '%s','%s','%s','%s','%s','%s','%s','%s',%
> d)"\
>         %(self.__class__.mCodigo, self.__class__.mNombre,
> self.__class__.mTipoDoc, self.__class__.mNumDoc,\
>         self.__class__.mDireccion, self.__class__.mPostal,
> self.__class__.mFono1,\
>         self.__class__.mFono2, self.__class__.mFax,
> self.__class__.mEmail,\
>         self.__class__.mCelular, self.__class__.mWeb,
> self.__class__.mLinCredito)
>
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL('Insert')
>             if rs==False:
>                 return False
>             else:
>                 return True
>
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
>
>         self.CargarClientes()
> #-------------------------------------------------------------------------------
>
>     def GeneraCod(self):
>         """Genera el Codigo Unico para este cliente."""
>
>         sql="Select MAX(Codigo) from tblClientes"
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL()
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
>
>         #Si es el primer registro en la Tabla
>         if rs[0][0]==None:
>             cod=modGlobals.CrearCodigo('', 'C',9)
>         else:
>             cod=modGlobals.CrearCodigo(rs[0][0],'C', 9)
>
>         return cod
>
> #-------------------------------------------------------------------------------
>
>     def Edita(self, mCod):
>         """Edita los datos."""
>
>         sql="Update Where ID=%d" %(mCod)
>
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL('Update')
>             if rs==False:
>                 return False
>             else:
>                 return True
>
>
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
>
> #-------------------------------------------------------------------------------
>     def BuscarClte(self,mCod):
>
>         sql="Select * From tblClientes Where ID=%d" %(mCod)
>
>         self.cnn.__class__.SQL=sql
>
>         try:
>             rs=self.cnn.EjecutarSQL()
>             return rs
>         except errores.ConexionError, err:
>             print "Error:",err.mensaje
>         except errores.ConexionEjecucionError, err:
>             print "Error:",err.msgEjec
>
>
> ======================================================================
> ======================================================================
> ======================================================================
>
>
> ======================================================================
> FILE: FRMCLIENTESNE.PY
> ======================================================================
>
> # -*- coding: utf8 -*-#
> #Boa:Frame:Frame1
>
> import wx
> import modGlobals
> from Conectar import Conectar
> import errores
> from frmClientes import D_Cltes
>
> def create(parent, mTipo, mCodClte=''):
>     return Frame1(parent, mTipo, mCodClte)
>
> [wxID_FRAME1, wxID_FRAME1BTNOK, wxID_FRAME1BTNSALIR,
> wxID_FRAME1CBOTIPODOC,
>  wxID_FRAME1LBLCEL, wxID_FRAME1LBLCOD, wxID_FRAME1LBLCODIGO,
> wxID_FRAME1LBLCP,
>  wxID_FRAME1LBLCTE, wxID_FRAME1LBLDIREC, wxID_FRAME1LBLEMAIL,
>  wxID_FRAME1LBLF1, wxID_FRAME1LBLF2, wxID_FRAME1LBLFAX,
> wxID_FRAME1LBLLIN,
>  wxID_FRAME1LBLNUM, wxID_FRAME1LBLTD, wxID_FRAME1LBLWEB,
> wxID_FRAME1PANEL1,
>  wxID_FRAME1TXTCELU, wxID_FRAME1TXTCLTE, wxID_FRAME1TXTDIREC,
>  wxID_FRAME1TXTEMAIL, wxID_FRAME1TXTFAX, wxID_FRAME1TXTFONO1,
>  wxID_FRAME1TXTFONO2, wxID_FRAME1TXTLINCRE, wxID_FRAME1TXTNUMDOC,
>  wxID_FRAME1TXTPOSTAL, wxID_FRAME1TXTWEB,
> ] = [wx.NewId() for _init_ctrls in range(30)]
>
> class Frame1(wx.Frame):
>     TipoOper=None
>     CodClte=None
>
>     def _init_coll_fsClte_Growables(self, parent):
>         # generated method, don't edit
>
>         parent.AddGrowableRow(0)
>         parent.AddGrowableRow(1)
>         parent.AddGrowableCol(0)
>
>     def _init_coll_fsCtrls_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.lblCod, 0, border=5, flag=0)
>         parent.AddWindow(self.lblCodigo, 0, border=5, flag=0)
>         parent.AddWindow(self.lblCte, 0, border=5, flag=0)
>         parent.AddWindow(self.txtClte, 0, border=5, flag=0)
>         parent.AddWindow(self.lblTD, 0, border=5, flag=0)
>         parent.AddWindow(self.cboTipoDoc, 0, border=5, flag=0)
>         parent.AddWindow(self.lblNum, 0, border=5, flag=0)
>         parent.AddWindow(self.txtNumDoc, 0, border=5, flag=0)
>         parent.AddWindow(self.lblDirec, 0, border=5, flag=0)
>         parent.AddWindow(self.txtDirec, 0, border=5, flag=0)
>         parent.AddWindow(self.lblCP, 0, border=5, flag=0)
>         parent.AddWindow(self.txtPostal, 0, border=5, flag=0)
>         parent.AddWindow(self.lblF1, 0, border=5, flag=0)
>         parent.AddWindow(self.txtFono1, 0, border=5, flag=0)
>         parent.AddWindow(self.lblF2, 0, border=5, flag=0)
>         parent.AddWindow(self.txtFono2, 0, border=5, flag=0)
>         parent.AddWindow(self.lblFax, 0, border=5, flag=0)
>         parent.AddWindow(self.txtFax, 0, border=5, flag=0)
>         parent.AddWindow(self.lblEmail, 0, border=5, flag=0)
>         parent.AddWindow(self.txtEmail, 0, border=5, flag=0)
>         parent.AddWindow(self.lblWeb, 0, border=5, flag=0)
>         parent.AddWindow(self.txtWeb, 0, border=5, flag=0)
>         parent.AddWindow(self.lblCel, 0, border=5, flag=0)
>         parent.AddWindow(self.txtCelu, 0, border=5, flag=0)
>         parent.AddWindow(self.lblLin, 0, border=5, flag=0)
>         parent.AddWindow(self.txtLinCre, 0, border=5, flag=0)
>
>     def _init_coll_fsClte_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddSizer(self.fsCtrls, 1, border=5,
>               flag=wx.ALIGN_CENTER_HORIZONTAL)
>         parent.AddSizer(self.fsBtn, 1, border=5,
>               flag=wx.ALIGN_CENTER_HORIZONTAL)
>
>     def _init_coll_fsBtn_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.btnOk, 0, border=5, flag=wx.ALL |
> wx.EXPAND)
>         parent.AddWindow(self.btnSalir, 0, border=5, flag=wx.ALL |
> wx.EXPAND)
>
>     def _init_coll_bsClte_Items(self, parent):
>         # generated method, don't edit
>
>         parent.AddWindow(self.panel1, 0, border=0, flag=wx.EXPAND)
>
>     def _init_sizers(self):
>         # generated method, don't edit
>         self.bsClte = wx.BoxSizer(orient=wx.VERTICAL)
>
>         self.fsClte = wx.FlexGridSizer(cols=0, hgap=0, rows=2, vgap=0)
>
>         self.fsCtrls = wx.FlexGridSizer(cols=2, hgap=1, rows=0, vgap=2)
>
>         self.fsBtn = wx.FlexGridSizer(cols=2, hgap=0, rows=0, vgap=0)
>
>         self._init_coll_bsClte_Items(self.bsClte)
>         self._init_coll_fsClte_Items(self.fsClte)
>         self._init_coll_fsClte_Growables(self.fsClte)
>         self._init_coll_fsCtrls_Items(self.fsCtrls)
>         self._init_coll_fsBtn_Items(self.fsBtn)
>
>         self.SetSizer(self.bsClte)
>         self.panel1.SetSizer(self.fsClte)
>
>     def _init_ctrls(self, prnt):
>         # generated method, don't edit
>         wx.Frame.__init__(self, id=wxID_FRAME1, name='', parent=prnt,
>               pos=wx.Point(629, 243), size=wx.Size(263, 353),
>               style=wx.DEFAULT_FRAME_STYLE, title=u'Clientes')
>         self.SetClientSize(wx.Size(263, 353))
>
>         self.panel1 = wx.Panel(id=wxID_FRAME1PANEL1, name='panel1',
> parent=self,
>               pos=wx.Point(0, 0), size=wx.Size(263, 348),
>               style=wx.TAB_TRAVERSAL)
>
>         self.lblCte = wx.StaticText(id=wxID_FRAME1LBLCTE,
> label=u'Cliente',
>               name=u'lblCte', parent=self.panel1, pos=wx.Point(4, 14),
>               size=wx.Size(35, 12), style=0)
>
>         self.txtClte = wx.TextCtrl(id=wxID_FRAME1TXTCLTE,
> name=u'txtClte',
>               parent=self.panel1, pos=wx.Point(58, 14),
> size=wx.Size(200, 22),
>               style=0, value=u'')
>         self.txtClte.SetToolTipString(u'Nombre o Raz\xf3n Social')
>
>         self.lblTD = wx.StaticText(id=wxID_FRAME1LBLTD, label=u'Tipo
> Doc.',
>               name=u'lblTD', parent=self.panel1, pos=wx.Point(4, 38),
>               size=wx.Size(45, 12), style=0)
>
>         self.cboTipoDoc = wx.ComboBox(choices=[],
> id=wxID_FRAME1CBOTIPODOC,
>               name=u'cboTipoDoc', parent=self.panel1, pos=wx.Point(58,
> 38),
>               size=wx.Size(198, 24), style=0, value=u'')
>         self.cboTipoDoc.SetLabel(u'')
>         self.cboTipoDoc.Bind(wx.EVT_COMBOBOX, self.OnCboTipoDocCombobox,
>               id=wxID_FRAME1CBOTIPODOC)
>
>         self.lblNum = wx.StaticText(id=wxID_FRAME1LBLNUM, label=u'N
> \xfamero',
>               name=u'lblNum', parent=self.panel1, pos=wx.Point(4, 64),
>               size=wx.Size(38, 12), style=0)
>
>         self.txtNumDoc = wx.TextCtrl(id=wxID_FRAME1TXTNUMDOC,
> name=u'txtNumDoc',
>               parent=self.panel1, pos=wx.Point(58, 64), size=wx.Size(80,
> 22),
>               style=0, value=u'')
>         self.txtNumDoc.SetToolTipString(u'N\xfamero de Documento')
>
>         self.lblDirec = wx.StaticText(id=wxID_FRAME1LBLDIREC,
>               label=u'Direcci\xf3n', name=u'lblDirec',
> parent=self.panel1,
>               pos=wx.Point(4, 88), size=wx.Size(47, 12), style=0)
>
>         self.txtDirec = wx.TextCtrl(id=wxID_FRAME1TXTDIREC,
> name=u'txtDirec',
>               parent=self.panel1, pos=wx.Point(58, 88),
> size=wx.Size(200, 22),
>               style=0, value=u'')
>         self.txtDirec.SetToolTipString(u'Direcci\xf3n')
>
>         self.lblCP = wx.StaticText(id=wxID_FRAME1LBLCP,
> label=u'Cod.Postal',
>               name=u'lblCP', parent=self.panel1, pos=wx.Point(4, 112),
>               size=wx.Size(52, 12), style=0)
>
>         self.txtPostal = wx.TextCtrl(id=wxID_FRAME1TXTPOSTAL,
> name=u'txtPostal',
>               parent=self.panel1, pos=wx.Point(58, 112),
> size=wx.Size(80, 24),
>               style=0, value=u'')
>         self.txtPostal.SetToolTipString(u'C\xf3digo Postal')
>
>         self.lblF1 = wx.StaticText(id=wxID_FRAME1LBLF1, label=u'Tel
> \xe9fono',
>               name=u'lblF1', parent=self.panel1, pos=wx.Point(4, 138),
>               size=wx.Size(39, 12), style=0)
>
>         self.txtFono1 = wx.TextCtrl(id=wxID_FRAME1TXTFONO1,
> name=u'txtFono1',
>               parent=self.panel1, pos=wx.Point(58, 138),
> size=wx.Size(80, 22),
>               style=0, value=u'')
>
>         self.lblF2 = wx.StaticText(id=wxID_FRAME1LBLF2, label=u'Tel
> \xe9fono',
>               name=u'lblF2', parent=self.panel1, pos=wx.Point(4, 162),
>               size=wx.Size(39, 12), style=0)
>
>         self.txtFono2 = wx.TextCtrl(id=wxID_FRAME1TXTFONO2,
> name=u'txtFono2',
>               parent=self.panel1, pos=wx.Point(58, 162),
> size=wx.Size(80, 22),
>               style=0, value=u'')
>
>         self.lblFax = wx.StaticText(id=wxID_FRAME1LBLFAX, label=u'Fax',
>               name=u'lblFax', parent=self.panel1, pos=wx.Point(4, 186),
>               size=wx.Size(16, 12), style=0)
>
>         self.txtFax = wx.TextCtrl(id=wxID_FRAME1TXTFAX, name=u'txtFax',
>               parent=self.panel1, pos=wx.Point(58, 186),
> size=wx.Size(80, 22),
>               style=0, value=u'')
>
>         self.lblEmail = wx.StaticText(id=wxID_FRAME1LBLEMAIL,
> label=u'Email',
>               name=u'lblEmail', parent=self.panel1, pos=wx.Point(4,
> 210),
>               size=wx.Size(27, 12), style=0)
>
>         self.txtEmail = wx.TextCtrl(id=wxID_FRAME1TXTEMAIL,
> name=u'txtEmail',
>               parent=self.panel1, pos=wx.Point(58, 210),
> size=wx.Size(192, 22),
>               style=0, value=u'@')
>
>         self.lblWeb = wx.StaticText(id=wxID_FRAME1LBLWEB,
> label=u'Website',
>               name=u'lblWeb', parent=self.panel1, pos=wx.Point(4, 234),
>               size=wx.Size(36, 12), style=0)
>
>         self.txtWeb = wx.TextCtrl(id=wxID_FRAME1TXTWEB, name=u'txtWeb',
>               parent=self.panel1, pos=wx.Point(58, 234),
> size=wx.Size(192, 22),
>               style=0, value=u'http://')
>
>         self.lblCel = wx.StaticText(id=wxID_FRAME1LBLCEL,
> label=u'Celular',
>               name=u'lblCel', parent=self.panel1, pos=wx.Point(4, 258),
>               size=wx.Size(35, 12), style=0)
>
>         self.txtCelu = wx.TextCtrl(id=wxID_FRAME1TXTCELU,
> name=u'txtCelu',
>               parent=self.panel1, pos=wx.Point(58, 258),
> size=wx.Size(80, 22),
>               style=0, value=u'9')
>
>         self.lblLin = wx.StaticText(id=wxID_FRAME1LBLLIN,
>               label=u'Lin.Cr\xe9dito', name=u'lblLin',
> parent=self.panel1,
>               pos=wx.Point(4, 282), size=wx.Size(53, 12), style=0)
>
>         self.txtLinCre = wx.TextCtrl(id=wxID_FRAME1TXTLINCRE,
> name=u'txtLinCre',
>               parent=self.panel1, pos=wx.Point(58, 282),
> size=wx.Size(80, 22),
>               style=0, value=u'0')
>         self.txtLinCre.SetToolTipString(u'Linea de Cr\xe9dito')
>
>         self.btnOk = wx.Button(id=wxID_FRAME1BTNOK, label=u'Aceptar',
>               name=u'btnOk', parent=self.panel1, pos=wx.Point(41, 309),
>               size=wx.Size(85, 34), style=0)
>         self.btnOk.SetToolTipString(u'Acepta cambios')
>         self.btnOk.Bind(wx.EVT_BUTTON, self.OnBtnOkButton,
> id=wxID_FRAME1BTNOK)
>
>         self.btnSalir = wx.Button(id=wxID_FRAME1BTNSALIR,
> label=u'Salir',
>               name=u'btnSalir', parent=self.panel1, pos=wx.Point(136,
> 309),
>               size=wx.Size(85, 34), style=0)
>         self.btnSalir.SetToolTipString(u'Salir')
>         self.btnSalir.Bind(wx.EVT_BUTTON, self.OnBtnSalirButton,
>               id=wxID_FRAME1BTNSALIR)
>
>         self.lblCod = wx.StaticText(id=wxID_FRAME1LBLCOD, label=u'C
> \xf3digo',
>               name=u'lblCod', parent=self.panel1, pos=wx.Point(4, 0),
>               size=wx.Size(34, 12), style=0)
>
>         self.lblCodigo = wx.StaticText(id=wxID_FRAME1LBLCODIGO,
> label=u'',
>               name=u'lblCodigo', parent=self.panel1, pos=wx.Point(58,
> 0),
>               size=wx.Size(150, 12), style=0)
>         self.lblCodigo.SetToolTipString(u'C\xf3digo Cliente')
>         self.lblCodigo.SetAutoLayout(False)
>
>         self._init_sizers()
>
>     def __init__(self, parent, mTipo, mCodClte):
>         self._init_ctrls(parent)
>
>         self.__class__.TipoOper=mTipo
>         self.__class__.CodClte=mCodClte
>
>
>         #Setea tama?os minimos
>         self.fsClte.Fit(self)
>         self.fsClte.SetSizeHints(self)
>
>         self.oClte=D_Cltes()
>
>         #Estableve el Encoding
>         self.encode='utf8'
>
>         self.CargarCombo()
>         self.CargaForm()
>
> #-------------------------------------------------------------------------------
>
>     def CargaForm(self):
>
>         if self.__class__.TipoOper=="E":
>             self.dat=self.oClte.BuscarClte(self.__class__.CodClte)
>             self.CargarCtrls()
>
> #-------------------------------------------------------------------------------
>
>     def CargarCtrls(self):
>
>         self.lblCodigo.SetLabel(self.dat[0][1])
>         self.txtClte.SetValue(self.dat[0][2])
>         self.cboTipoDoc.SetSelection(self.dat[0][3]-1)
>         self.txtNumDoc.SetValue(self.dat[0][4])
>         self.txtDirec.SetValue(self.dat[0][5])
>         self.txtPostal.SetValue(self.dat[0][6])
>         self.txtFono1.SetValue(self.dat[0][7])
>         self.txtFono2.SetValue(self.dat[0][8])
>         self.txtFax.SetValue(self.dat[0][9])
>         self.txtEmail.SetValue(self.dat[0][10])
>         self.txtCelu.SetValue(self.dat[0][11])
>         self.txtWeb.SetValue(self.dat[0][12])
>         self.txtLinCre.SetValue(str(self.dat[0][13]))
>
> #-------------------------------------------------------------------------------
>     def CargarCombo(self):
>
>         rs=self.oClte.CargaTDoc()
>
>         self.cboTipoDoc.Clear()
>
>         i=0
>
>         for it in rs:
>             x=unicode(rs[i][1],self.encode)
>             self.cboTipoDoc.Append(x,rs[i][0])
>             i+=1
>
>         if self.__class__.TipoOper=="N":
>             #Vacia el 1er elemento mostrado para q el user se vea
> obligado a escoger
>             self.cboTipoDoc.SetValue('')
>         elif self.__class__.TipoOper=="E":
>             #Pinta el registro seleccionado
>             pass
>
> #-------------------------------------------------------------------------------
>     def ObtieneValores(self):
>         self.oClte.__class__.mNombre=self.txtClte.GetValue()
>         self.oClte.__class__.mTipoDoc=int(self.kTipoDoc)
>         self.oClte.__class__.mNumDoc=self.txtNumDoc.GetValue()
>         self.oClte.__class__.mDireccion=self.txtDirec.GetValue()
>         self.oClte.__class__.mPostal=self.txtPostal.GetValue()
>         self.oClte.__class__.mFono1=self.txtFono1.GetValue()
>         self.oClte.__class__.mFono2=self.txtFono2.GetValue()
>         self.oClte.__class__.mFax=self.txtFax.GetValue()
>         self.oClte.__class__.mEmail=self.txtEmail.GetValue()
>         self.oClte.__class__.mCelular=self.txtCelu.GetValue()
>         self.oClte.__class__.mWeb=self.txtWeb.GetValue()
>         self.oClte.__class__.mLinCredito=int(self.txtLinCre.GetValue())
>
> #-------------------------------------------------------------------------------
>
>     def BorrarCtrls(self):
>         self.txtClte.Clear()
>         self.txtNumDoc.Clear()
>         self.txtDirec.Clear()
>         self.cboTipoDoc.Clear()
>         self.txtPostal.Clear()
>         self.txtFono1.Clear()
>         self.txtFono2.Clear()
>         self.txtFax.Clear()
>         self.txtEmail.Clear()
>         self.txtCelu.Clear()
>         self.txtWeb.Clear()
>         self.txtLinCre.Clear()
>
> #-------------------------------------------------------------------------------
>
>     def OnBtnOkButton(self, event):
>
>         self.ObtieneValores()
>
>         if self.__class__.TipoOper=="N":
>             if self.oClte.Graba()==True:
>                 dlg=wx.MessageDialog(self,u'Se ingres? el nuevo
> Cliente.', \
>                 'PymeGestor',wx.OK | wx.ICON_EXCLAMATION)
>                 dlg.ShowModal()
>                 dlg.Destroy()
>                 self.BorrarCtrls()
>                 self.txtClte.SetFocus()
>
>             else:
>                 dlg=wx.MessageDialog(self,u'Hubo un error al ingresar
> los datos.\
>                 Corrija y vuelva a intentarlo.','PymeGestor',wx.OK |
> wx.ICON_ERROR)
>                 dlg.ShowModal()
>                 dlg.Destroy()
>                 self.txtClte.SetFocus()
>
>         elif self.__class__.TipoOper=="E":
>             self.oClte.Edita()
>         else:
>             pass
>
> #-------------------------------------------------------------------------------
>
>     def OnBtnSalirButton(self, event):
>         self.Close(True)
>
> #-------------------------------------------------------------------------------
>
>     def OnCboTipoDocCombobox(self, event):
>         cb = event.GetEventObject()
>         #Obtengo el Key
>         self.kTipoDoc = cb.GetClientData(cb.GetSelection())
>
> #-------------------------------------------------------------------------------
>
> =============================================================================
> =============================================================================
> 
> -- 
> Mario Lacunza <mario.lacunza at gmail.com>



From lists at fabis-site.net  Tue Sep 26 15:28:01 2006
From: lists at fabis-site.net (Fabian Steiner)
Date: Tue, 26 Sep 2006 21:28:01 +0200
Subject: Splitting device addresses into parts
In-Reply-To: <1159291887.052173.264990@i3g2000cwc.googlegroups.com>
References: <efbl8h$kf2$03$1@news.t-online.com>
	<45195a2d$0$27565$626a54ce@news.free.fr>
	<efbn5h$ol2$03$1@news.t-online.com>
	<1159291887.052173.264990@i3g2000cwc.googlegroups.com>
Message-ID: <efbv00$fl2$01$1@news.t-online.com>

johnzenger at gmail.com wrote:
> This may be a rare case where regular expressions are not a horrible,
> self-defeating idea.  Something like:
> 
> delimiter = re.compile("[:\.]")
> delimiter.split("PCI:2:3.0")
> ...and then ignore the first entry, and map int the rest.
> Alternatively, if the delimiters can really be anything, and if there
> are no numbers in the first space ("PCI"), then maybe this approach:

Thank you, this solution seems to be quite satisfying :-)

Regards,
Fabian Steiner


From eric at brouhaha.com  Wed Sep 20 16:37:43 2006
From: eric at brouhaha.com (Eric Smith)
Date: 20 Sep 2006 13:37:43 -0700
Subject: Python/MySQL problem on Windows
Message-ID: <qhk63yb7fs.fsf@ruckus.brouhaha.com>

I'm trying to use Python 2.4.3 and pywin32-209 to access a MySQL
database on Windows Server 2003 Standard Edition, and not having much
luck. It seems like parts of the MySQLdb module are not getting loaded
correctly, but no error message is given during the import, even if I
give a "-vv" on the command line.

I'm trying to do:

    import MySQLdb
    db = MySQLdb.connection (db="database", user="user", passwd="password")
    cursor = db.cursor ()

It won't give me a cursor object, instead claiming "AttributeError: cursor".
Sure enough, if I do a

    dir (db)

I get:

    ['affected_rows', 'autocommit', 'change_user', 'character_set_name',
     'close', 'commit', 'dump_debug_info', 'errno', 'error', 'escape',
     'escape_string', 'field_count', 'get_host_info', 'get_proto_info',
     'get_server_info', 'info', 'insert_id', 'kill', 'next_result', 'ping',
     'query', 'rollback', 'select_db', 'set_server_option', 'shutdown',
     'sqlstate', 'stat', 'store_result', 'string_literal', 'thread_id',
     'use_result', 'warning_count']

There seem to be a lot of attributes missing, not just cursor.

But the database connection is live and works, as I can use the
undocumented db.query() function to do an insert into the database,
and that works fine.

I can run my same Python script on Fedora Core 5 and it works fine.

I'm at wit's end; can anyone suggest what might be wrong, or how to
debug it?  (Unfortunately replacing Windows with Linux on the server
machine is not currently a viable option.)

I can provide the "-vv" output if that's useful, but there didn't
appear to be anything unusual in it.

Thanks!
Eric Smith



From damrho at netcabo.pt  Mon Sep 25 10:10:26 2006
From: damrho at netcabo.pt (Diogo Bastos)
Date: Mon, 25 Sep 2006 15:10:26 +0100
Subject: Help with Tkinter and stdin input event binding
Message-ID: <4517e359$0$26729$a729d347@news.telepac.pt>

Hello,

I'm fairly used to working with Python but it's the first time I'm 
trying to use Tkinter so I'm running into a problem.

I'm using three python scripts with Tkinter GUIs and a fourth script 
that basically opens communication pipes with the three others. The idea 
is that the fourth script works as a communication intermediary between 
the others. The problem is that I can't make the Tkinter GUIs respond to 
stdin events because the toplevel mainloop isn't under my control, I 
have no idea how to do this.

Here's the main idea simplified.

Script 1 is a Tkinter GUI.
Script 2 uses os.forkpty() to get the child's pseudo-terminal descriptor.

Now if in Script 1 I use <print "Here I Am!"> I can get that input in 
Script 2 using simply the os.read() method on the pseudo-terminal 
descriptor. The problem is that when I use os.write() on that 
descriptor, there's no way I can get the input on Script 1 because I 
have no control whatsoever of the program's main loop. Is there any way 
around this, either by adding some sort of stdin input event binding or 
something similar?

Thanks in advance


From fakeaddress at nowhere.org  Thu Sep 14 18:22:23 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Thu, 14 Sep 2006 22:22:23 GMT
Subject: How to convert a timedelta object to a string?
In-Reply-To: <JVjOg.1836$vD2.1096@tornado.texas.rr.com>
References: <mailman.104.1158267229.10491.python-list@python.org>
	<JVjOg.1836$vD2.1096@tornado.texas.rr.com>
Message-ID: <zCkOg.1074$TV3.746@newssvr21.news.prodigy.com>

Paul McGuire wrote:
> "Carl J. Van Arsdall" wrote:
>> Basically I used the datetime module and timedelta objects to calculate a 
>> difference between two times.  Now I'm trying to figure out how I make 
>> that time delta a string HH:MM:SS to show elapsed time.
[...]

> From the Python console:
> 
>>>> startTime = datetime.timedelta(seconds=45,minutes=22,hours=10)
>>>> stopTime = datetime.timedelta(seconds=25,minutes=2,hours=4)
>>>> delta = startTime-stopTime
>>>> time.strftime("%H:%M:%S",time.gmtime(delta.seconds))
> '06:20:20'

On the other hand:

 >>> startTime = datetime.timedelta(hours=28)
 >>> stopTime = datetime.timedelta(hours=4)
 >>> delta = startTime-stopTime
 >>> time.strftime("%H:%M:%S",time.gmtime(delta.seconds))
'00:00:00'


-- 
--Bryan


From sanxiyn at gmail.com  Tue Sep  5 21:54:56 2006
From: sanxiyn at gmail.com (sanxiyn at gmail.com)
Date: 5 Sep 2006 18:54:56 -0700
Subject: IronPython 1.0 released today!
In-Reply-To: <mailman.52.1157504826.5279.python-list@python.org>
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.52.1157504826.5279.python-list@python.org>
Message-ID: <1157507696.434357.128090@m79g2000cwm.googlegroups.com>

Neal Becker wrote:
> Will it run with mono?

Yes, it will run with Mono 1.1.17 or later out of the box with zero
problems.



From bj_666 at gmx.net  Fri Sep  8 18:02:36 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sat, 09 Sep 2006 00:02:36 +0200
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.08.22.02.35.596359@gmx.net>

In <1157749692.092338.240820 at m73g2000cwd.googlegroups.com>,
mensanator at aol.com wrote:

> Ben Sizer wrote:
>> I don't think so... it doesn't take much to say that the module
>> implements a subset of SQL but stores ignores data types.
> 
> So I can't just say
> 
> WHERE qty=12
> 
> I have to say
> 
> WHERE (qty=12) OR (qty="12")

No you just write the first and don't stuff strings into that column. 
It's your choice after all.

> Do you know what INNER JOIN means?
> 
> Do you know how important it is to a relational database?
> 
> Can you explain how an INNER JOIN can even work, in theory,
> with dynamic data types?

The same as with static types!?  Where's the problem?

table_a:

id    name
----- ----------
42    bob
'foo' methusalem
'42'  gaylord

table_b:

id    age
----- ------
42    23
'foo' 1000
0.5   None

Join on `id`:

id    name       age
----- ---------- ----
42    bob        23
'foo' methusalem 1000

> The implications of violating the SQL Language Specification
> are much more serious than you think.

Or not so serious than you think.

Ciao,
	Marc 'BlackJack' Rintsch


From tim.peters at gmail.com  Tue Sep 12 01:16:27 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 12 Sep 2006 01:16:27 -0400
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158036663.669437.194480@i3g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
Message-ID: <1f7befae0609112216r1d69b3aat9eb51f5042c8414e@mail.gmail.com>

[Licheng Fang]
> ...
> I want to know if there is some way to make Python RE behave like grep
> does,

Not in general, no.  The matching strategies couldn't be more
different, and that's both deep and intentional.  See Friedl's book
for details:

    http://regex.info/

> or do I have to change to another engine?

Yes, if POSIX regexp semantics are what you require.  Several years
ago there was an extension module for Python supplying POSIX
semantics, but I couldn't find anything current just now in a minute
of searching.  You may be more motivated to search longer ;-)


From paddy3118 at netscape.net  Mon Sep 18 17:49:24 2006
From: paddy3118 at netscape.net (Paddy)
Date: 18 Sep 2006 14:49:24 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
In-Reply-To: <7xac4wx39o.fsf@ruckus.brouhaha.com>
References: <mailman.232.1158591996.10491.python-list@python.org>
	<1158602663.906546.246970@h48g2000cwc.googlegroups.com>
	<1158605612.814018.110830@m7g2000cwm.googlegroups.com>
	<7xac4wx39o.fsf@ruckus.brouhaha.com>
Message-ID: <1158616164.894736.292790@m73g2000cwd.googlegroups.com>


Paul Rubin wrote:
> bearophileHUGS at lycos.com writes:
> > With Python you can't win, because Perl and Ruby allow for shorter
> > programs.
>
> Python has native bignums, which should simplify a program like this
> enormously.  I don't know if Ruby has them.  Perl doesn't, and if you
> use some CPAN library that simulates them, that should count as part
> of your program size.

Unfortunately:

$ perl -Mbignum -e 'print
1234567890123456789012345678901234567890,"\n"'
1234567890123456789012345678901234567890

HP DV8025EA at PADDYS-HPLAPTOP /cygdrive/c/Documents and Settings/All
Users/Documents/Python tutorial
$ perl -v

This is perl, v5.8.7 built for cygwin-thread-multi-64int
(with 1 registered patch, see perl -V for more detail)


Yep my standard Cygwin perl installation for windows includes the
bignum package.

- Paddy.



From sebastien.thur at laposte.net  Fri Sep 22 11:54:40 2006
From: sebastien.thur at laposte.net (seb)
Date: 22 Sep 2006 08:54:40 -0700
Subject: what is the best practice to separate Pygtk and long running
	thread code
In-Reply-To: <4ni5sgFakb86U1@individual.net>
References: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
	<4ni5sgFakb86U1@individual.net>
Message-ID: <1158940480.497320.268110@d34g2000cwd.googlegroups.com>

Hi Thomas,

I am running WinXP so that casting processes and getting their results
is not so convenient.

I have tested idle add and it does the job : the thread is running
whenever there is no activity on the gui.
I still do not understand how it can be so responsive 'cause the thread
I am using at the moment do not have any time.sleep(ing).

I am afraid I have still to use an intermediate class between the
computing thread and the gui to send data between the two of them but
now about all the computing time is devoided to the thread.

Thanks a lot !!!

Seb.

ps : the only mod that I have done to the gui.py in the init is

 def __init__(self, path='gui.glade',
                 root='window1',
                 domain=app_name, kwargs={}):
        path = os.path.join(glade_dir, path)
        SimpleGladeApp.__init__(self, path, root, domain, **kwargs)
	self.q=Queue.Queue()
	self.action=act.action(self.q)
	gobject.idle_add(self.action.go)
        #gobject.timeout_add (1000,self.action.go)
	gobject.timeout_add (1000,self.process)



Thomas Guettler wrote:
> seb wrote:
>
> > Hi,
> >
> > I am using pygtk for the first times.
> >
> > I am wondering what would be the best "pattern" to interface pygtk with
> > a thread.
> >
> > The thread is collecting informations (over the network for example) or
> > is doing some long calculations.
>
> Hi,
>
> I would use several *processes*. If your scripts runs on Unix/Linux
> you can use select() on the filedescriptors of the processes you created
> with popen. On Windows you need to poll them, but maybe this is
> better than threads, too. With idle_add you can get data from
> the subproceses. It gets called if there are no actions in the
> event-loop.
>
> HTH,
>  Thomas
>
> --
> Thomas G?ttler, http://www.thomas-guettler.de/ http://www.tbz-pariv.de/
> E-Mail: guettli (*) thomas-guettler + de
> Spam Catcher: niemand.leermann at thomas-guettler.de



From fname.sname.lname at gmailCUTMECUT.com  Tue Sep  5 06:39:57 2006
From: fname.sname.lname at gmailCUTMECUT.com (Jakub Piotr Nowak)
Date: Tue, 5 Sep 2006 10:39:57 +0000 (UTC)
Subject: [ANN] RuPy 2007 - Python & Ruby Conference
Message-ID: <slrnefqkvu.os3.fname.sname.lname@atos.wmid.amu.edu.pl>

RuPy 2007
Python & Ruby Conference

Poznan, Poland
April 7-8, 2007

RuPy is a Python & Ruby conference.
It will be held at Adam Mickiewicz University,
in Poznan, Poland, so it is relatively
accessible from both the East and the West of Europe.

The philosophy of RuPy is to put together Python & Ruby experts with
young programmers and to provide a good communication channel for
East-West exchange of prospective ideas.

-- Call For Participation --
We would like to invite you to join us for two days
of Python & Ruby fun. We are looking for speakers willing
to share their knowledge and experience, talk about
new solutions and show new developments.

Potential presenters should submit an abstract
to:
rupy-talks at wmid.amu.edu dot pl
by November, 31th 2006 for consideration. If you have
any special presentation needs, let us know.

For more details check our site:
http://rupy.wmid.amu.edu.pl

Best regards, 
-- 
Jakub P. Nowak


From ajones1 at gmail.com  Fri Sep  8 17:29:01 2006
From: ajones1 at gmail.com (Adam Jones)
Date: 8 Sep 2006 14:29:01 -0700
Subject: Building Python Based Web Application
In-Reply-To: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
Message-ID: <1157750941.002324.29470@p79g2000cwp.googlegroups.com>


James Stroud wrote:
> Hello All,
>
> I am interested in setting up a modest invoicing system for some
> consulting I am doing. I like the idea of managing this on the web and
> creating invoices and printing them from a browser. However, I'm not
> really sure where to start. I've played with some CMS applications, but
> they seem more for blogging (mamba, wordpress, etc.). Ideally, I would
> like to interface with mySQL (or whatever the favorite web-flavor
> database app is these days). I would like to be able to use my python
> skills.
>
> I confident that if I set out to write this from scatch, I will be
> seriously re-inventing the wheel, perhaps several times over.
>
> So, my question is, does anyone know of a book and/or some kind of
> framework that would make the best sense for what I am describing here?
> I've heard of Zope, but I would like to make sure its appropriate for
> the job before I spend 2 or 3 days getting acquainted with it. I'm adept
> at HTML, python, CSS, python-CGI, and interfacing with mySQL through
> DBI. I'm sure I could get something to work with these skills, but I
> want to minimize wheel re-invention as much as possible.
>
> Basically, I want a jump start on data-base oriented web development
> with a focus on applying my python skills.
>
> Any suggestions will be greatly appreciated.
>
> James
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
>
> http://www.jamesstroud.com/

Hi James,

>From what it looks like you are doing, filtered by my personal
experience, I would recommend either Django or TurboGears. From what I
have heard Zope, and Pylons would also be good choices.

Django would be by far the better choice if your data entry forms would
map directly to your database tables. The admin interface gives you
web-based access to your database pretty much for free. It doesn't work
as well when your data relationships are more complicated, but could
probably prove to be a useful head start.

I think TurboGears is a pretty good choice because of widgets. In
TurboGears widgets are packaged up bits of user interaction code, made
portable throughout your project. Widgets have already been created
that handle form creation, a bunch of nifty little ajax things, and
even more advanced features. User created widgets can be (and are)
easily made available for download and installation.

One example that you would probably find useful is the TurboTinyMCE
widget, which coincidentally enough is not a standard part of
turbogears, but a downloadable widget. It incorporates the TinyMCE text
editor into any web page without having to worry about adding style
sheets, javascript includes, or really any code that produces TinyMCE
to your existing HTML. You basically put a call to the TinyMCE widget
in your Template and all the rest of the work happens automatically.
TurboGears also has an admin interface (named Catwalk), but it is not
designed for external use.

Without having a better idea of what you are trying to do, I would
recommend Django on the grounds that the admin interface will probably
do what you need. I would encourage you to take a look at both projects
if you have time, just to see which one you like more, but based on raw
feature matches that is my recommendation.

Disclosure: I do most of my work with TurboGears. If I have maligned or
misrepresented any other project in any way please attribute it to lack
of experience. If I have maligned or misrepresented TurboGears in any
way, please attribute it to lack of caffeine.



From gnewsg at gmail.com  Thu Sep 14 07:54:48 2006
From: gnewsg at gmail.com (billie)
Date: 14 Sep 2006 04:54:48 -0700
Subject: Limitate speed of a socket-based data transferring
Message-ID: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>

Hi all. I'm writing a TCP-based application that I will use to trasfer
binary files through the network. This piece of code represents how do
I get a file from a remote peer and save it on my local hard drive:

file_obj = open('downloaded.ext', 'wb')
while 1:
    buf = sock.recv(2048)
    if len(buf) == 0:
         break
    file_obj.write(buf)
file_obj.close()
sock.close()

I would like to know how could be possible to limit the file transfer
speed (for example: don't write more than 50 Kb/sec).
Some ideas?

Best regards



From grante at visi.com  Thu Sep  7 11:21:39 2006
From: grante at visi.com (Grant Edwards)
Date: Thu, 07 Sep 2006 15:21:39 -0000
Subject: sending emails using python
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
	<slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>
	<12g07gf97898rff@corp.supernews.com>
	<B51734183.306.7705.3@mx-extra>
	<mailman.123.1157638459.5279.python-list@python.org>
Message-ID: <12g0e83gshlds40@corp.supernews.com>

On 2006-09-07, Tim Williams <tim at tdw.net> wrote:

>>  Wouldn't you use a SMTP client to send email?
>>
>>  I would, but I don't use exchange server. :)
>>
>> The one exchange server I used in the past didn't accept SMTP
>> mail.
>>
>> errr, I used to admin Exchange, if it does accept SMTP then
>> how could it function as a live mail server?
>
> Did you mean *doesn't accept* ??

One presumes he did.

> There are a couple of possibilities at least, of the top of my
> head:
>
> * The IMC / IMS (smtp connector) is located on a different
>   server within its Exchange organisation, or a DMZ'ed
>   exchange server that is only used for SMTP.
>
> * The server doesn't accept SMTP from local IP ranges, only
>   from external (ie inbound email)

I believe it was the latter.  I'm pretty sure there was only
one server.  When I first started at that company it did accept
SMTP connections on it's internal network interface.

> Outlook / Exchange clients use MAPI, internal SMTP is only a
> requirement if you have non-MAPI clients sending email through
> the server.

And BOFH was horrified by non-MS software, so he shut off IMAP
support and SMTP support on the internal network as a way to
force everybody to switch to Outlook.

-- 
Grant Edwards                   grante             Yow!  This ASEXUAL
                                  at               PIG really BOILS
                               visi.com            my BLOOD... He's
                                                   so... so... URGENT!!


From rupole at hotmail.com  Thu Sep 21 22:28:58 2006
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 21 Sep 2006 22:28:58 -0400
Subject: How to get ip setting, dynamic ip or static ip?
References: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>
Message-ID: <1158892362_9487@sp6iad.superfeed.net>

"kode4u" <kode4u at gmail.com> wrote in message news:1158844868.766047.73270 at b28g2000cwb.googlegroups.com...
> How to use python get my windows box's ip setting type? Dynamic ip, or
> static ip?
>
> If it's static ip, what's the exact value?
>

You can use WMI to list properties of your network adapter(s):
import win32com.client
wmi=win32com.client.GetObject('winmgmts:')
adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
for adapter in adapters:
    print adapter.Properties_['Caption'], adapter.Properties_['DhcpEnabled'], adapter.Properties_['IpAddress']

       Roger




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From bignose+hates-spam at benfinney.id.au  Tue Sep 19 22:11:02 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 20 Sep 2006 12:11:02 +1000
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
	<4n9n4iF99lbqU1@uni-berlin.de> <87k6402i62.fsf@benfinney.id.au>
	<20060919163146.GA5295@kateandchris.net>
	<87fyen2znt.fsf@benfinney.id.au> <eeq3br$o6l$1@sea.gmane.org>
Message-ID: <87wt7z1e4p.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> Ben Finney wrote:
> > Write your program in Python, and you can ignore the Python
> > license when you distribute your own work. We'd love to see you
> > distribute it under a free software license, but the license of
> > Python has no legal effect on your decision.
> 
> Given that many people distribute (enough of) the interpreter with
> their Python programs I wouldn't like the above to be regarded as a
> blanket statement that the Python license doesn't have to be
> considered when distributing the interpreter with program source.

Yes, this is true; I was deliberately omitting the case where parts of
Python *are* being redistributed. How about this:

Write your program in Python, distribute it without including any part
of Python itself, and you can ignore the Python license. We'd love to
see you distribute your work under a free software license, but the
license of Python has no legal effect on your decision in that case.

-- 
 \                       "Nature abhors a moron."  -- Henry L. Mencken |
  `\                                                                   |
_o__)                                                                  |
Ben Finney



From torerik81 at gmail.com  Sat Sep  9 11:07:55 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Sat, 09 Sep 2006 17:07:55 +0200
Subject: What algorithm does Python use to evaluate:     if substring
	in string
In-Reply-To: <1hle0k3.1lialdlojudmaN%aleax@mac.com>
References: <eduhvs$46c$1@news.uit.no> <1hle0k3.1lialdlojudmaN%aleax@mac.com>
Message-ID: <edulcd$53j$1@news.uit.no>

Alex Martelli wrote:
> Tor Erik <torerik81 at gmail.com> wrote:
> 
>> I would be surprised if it is the naive:
> 
> Yep -- it's "a mix between Boyer-Moore and Horspool with a few more
> bells and whistles on the top", as documented and implemented in
> Objects/stringlib/fastsearch.h in the Python sources and well discussed
> and explained at http://effbot.org/zone/stringlib.htm .
> 
> 
> Alex
>  

Ok. Two questions:

1. Is "a in b" simply an alias for "b.find(a)"?

2. Is this algorithm exclusive to Python 2.5, or is it contained in 2.4 
aswell?


From gagsl-py at yahoo.com.ar  Mon Sep 18 21:19:10 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 18 Sep 2006 22:19:10 -0300
Subject: How to Send the Message using win32gui?
In-Reply-To: <977252d80609172207n1ebdeec5k879d7b3d48b03bc2@mail.gmail.co
 m>
References: <977252d80609172207n1ebdeec5k879d7b3d48b03bc2@mail.gmail.com>
Message-ID: <7.0.1.0.0.20060918220918.040e3670@yahoo.com.ar>

At Monday 18/9/2006 02:07, =?GB2312?B?0vzP6cH6?= wrote:

>I want to send LVM_SETITEMSTATE message using win32gui. But I don't 
>know how to do in Python.

The obvious way is win32api.PostMessage - but I feel you have 
another, higher-level, problem...



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From larry at hastings.org  Fri Sep 29 11:54:15 2006
From: larry at hastings.org (Larry Hastings)
Date: 29 Sep 2006 08:54:15 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
	<mailman.932.1159533269.10491.python-list@python.org>
	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>
	<mailman.948.1159542291.10491.python-list@python.org>
Message-ID: <1159545255.339364.299020@k70g2000cwa.googlegroups.com>

Fredrik Lundh wrote:
> > Sure.  Here are the results, but with range (10000000):
> ten million?  what hardware are you running this on?

Athlon 64 x2 4400+ (aka 2.2GHz), 3GB of RAM, Windows XP.


> what's in "s" when that loop is done?

It's equivalent to " 'a' * 10000000 ".  (I shan't post it here.)


Also, I misspoke earlier; it's not an improvement of 697%, but of 597%.
To be precise, it takes about 1/7 the time of the original.

Cheers,


/larry/



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 12:08:04 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 17:08:04 +0100
Subject: best way of testing a program exists before using it?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B440@vogbs009.gb.vo.local>

|     Tim> All that said, I think the only thing would be to 
| add a line to the
|     Tim> docs saying sthg like: This will always return False 
| for X_OK under
|     Tim> Win32. I'm happy to submit the patch, but is it worth it?
| 
| Yes, please do.  If people think it works the same on Unix 
| and Windows,
| they'll get burned and just have to reproduce your 
| investigative work to
| figure out what happened.

OK, I've never sent in a patch before (blushes for shame
as he thinks of all the years he's been using Python). Would
you mind pointing me towards some doc or post which tells
me where to look and what to do. Should I checkout svn and 
patch against that? Or what?

Thanks
TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From diffuser78 at gmail.com  Thu Sep 14 21:00:47 2006
From: diffuser78 at gmail.com (diffuser78 at gmail.com)
Date: 14 Sep 2006 18:00:47 -0700
Subject: matplotlib
Message-ID: <1158282047.089110.284140@h48g2000cwc.googlegroups.com>

Hi, I am a python newbie. I was looking for a plotting tool and
somebody told me matplotlib. But I couldnt find on google some good
starting tutorial on it.

Can somebody give some quick pointers to start off with matplotlib.

Thanks



From aahz at pythoncraft.com  Mon Sep 11 11:34:38 2006
From: aahz at pythoncraft.com (Aahz)
Date: 11 Sep 2006 08:34:38 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
Message-ID: <ee3vme$cjj$1@panix3.panix.com>

In article <4505707E.2080804 at redlinepy.com>,
Paul Watson  <pwatson at redlinepy.com> wrote:
>David Isaac wrote:
>>
>> I have no experience with database applications.
>> This database will likely hold only a few hundred items,
>> including both textfiles and binary files.
>> 
>> I would like a pure Python solution to the extent reasonable.
>> 
>> Suggestions?
>
>If you want really simple, look at the anydbm module.  If nothing better 
>is available, anydbm will use dumbdbm.  All of these are in the Python 
>build, so you do not need to fetch/read/install anything additional.
>
>Doing the DB-API would be much stronger, but might be overkill in your 
>situation.

Once Python 2.5 comes out, I recommend using sqlite because it avoids
the mess that dbm can cause.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From dwelch91 at gmail.com  Fri Sep 15 14:50:39 2006
From: dwelch91 at gmail.com (dwelch91 at gmail.com)
Date: 15 Sep 2006 11:50:39 -0700
Subject: Strange xml.parsers.expat import problem [corrected subject]
In-Reply-To: <1158346154.021445.143500@m73g2000cwd.googlegroups.com>
References: <1158346154.021445.143500@m73g2000cwd.googlegroups.com>
Message-ID: <1158346239.298004.205780@e3g2000cwe.googlegroups.com>

Sorry, that should have been "xml.parsers.expat"

dwelch91 at gmail.com wrote:
> Hi, c.l.p.'ers-
>
> I am having a problem with the import of xml.parsers.expat that has
> gotten me completely stumped. I have two programs, one a PyQt program
> and one a command line (text) program that both eventually call the
> same code that imports xml.parsers.expat. Both give me different
> results...
>
> The code that gets called is (print statements have been added for
> debugging):
>
>     # this is status.py
>     import xml.parsers.expat
>     print xml
>     print xml.parsers
>     print dir(xml.parsers)
>     print repr(xml.parsers.expat.ExpatError)
>     print xml.parsers.expat
>
>     if info_device_status:
>         try:
>             device_status =
> utils.XMLToDictParser().parseXML(info_device_status)
>             log.debug_block("info_device_status", info_device_status)
>             log.debug(device_status)
>         except xml.parsers.expat.ExpatError:
>             log.error("Device Status XML parse error")
>             device_status = {}
>
>     if info_ssp:
>         try:
>             ssp = utils.XMLToDictParser().parseXML(info_ssp)
>             log.debug_block("info_spp", info_ssp)
>             log.debug(ssp)
>         except xml.parsers.expat.ExpatError:
>             log.error("SSP XML parse error")
>             ssp = {}
>
> When I run this code from my console program, it prints out:
>
> <module '_xmlplus' from
> '/usr/lib/python2.4/site-packages/_xmlplus/__init__.pyc'>
> <module 'xml.parsers' from
> '/usr/lib/python2.4/site-packages/_xmlplus/parsers/__init__.pyc'>
> ['__all__', '__builtins__', '__doc__', '__file__', '__name__',
> '__path__', 'expat', 'pyexpat']
> <class xml.parsers.expat.ExpatError at 0x2aaaac6c6950>
> <module 'xml.parsers.expat' from
> '/usr/lib/python2.4/site-packages/_xmlplus/parsers/expat.pyc'>
>
> and all is well...
>
> However, from the PyQt program I get:
>
> <module '_xmlplus' from
> '/usr/lib/python2.4/site-packages/_xmlplus/__init__.pyc'>
> <module '_xmlplus.parsers' from
> '/usr/lib/python2.4/site-packages/_xmlplus/parsers/__init__.pyc'>
> ['__all__', '__builtins__', '__doc__', '__file__', '__name__',
> '__path__', 'sgmlop']
> Traceback (most recent call last):
>
> [...snip...]
>
>   File
> "/home/dwelch/tip/linux-imaging-and-printing/src/base/status.py", line
> 980, in StatusType6
>     print repr(xml.parsers.expat.ExpatError)
> AttributeError: 'module' object has no attribute 'expat'
>
> Somehow, the import has brought in "_xmlplus" rather than "xml", and
> "expat" is no longer in the xml.parsers module. This is on the same
> machine with the same user account, running each program "back to
> back". Running each program as a different user made no difference.
>
> Everything is also OK if I manually enter the import and print commands
> into a Python >>> prompt.
> 
> Any help much appreciated!
> 
> -Don



From rhymes at myself.com  Tue Sep  5 13:27:39 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Tue, 5 Sep 2006 19:27:39 +0200
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.13.1157448384.5279.python-list@python.org>
	<1157468259.924431.270850@h48g2000cwc.googlegroups.com>
Message-ID: <1hl7hvw.qrhoy6180zbjcN%rhymes@myself.com>

Sandra-24 <sandravandale at yahoo.com> wrote:

> Oh I'm aware of that, but it's not what I'm looking for. Mod_mono just
> lets you run ASP.NET on Apache. I'd much rather use Python :) Now if
> there was a way to run IronPython on Apache I'd be interested.

Take a look here:
http://lists.ironpython.com/pipermail/users-ironpython.com/2006-March/00
2049.html
and this thread:
http://www.mail-archive.com/users at lists.ironpython.com/msg01826.html



-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From bayerj at in.tum.de  Tue Sep  5 19:05:36 2006
From: bayerj at in.tum.de (bayerj)
Date: 5 Sep 2006 16:05:36 -0700
Subject: Removing from a List in Place
In-Reply-To: <mailman.41.1157489468.5279.python-list@python.org>
References: <mailman.41.1157489468.5279.python-list@python.org>
Message-ID: <1157497536.751534.211710@e3g2000cwe.googlegroups.com>

> I'm going to assume that it's supposed to work like this, but could
> someone tell me the reasoning behind it?  I.E. why is 3 skipped?

Because:

>>> alist[2]
3

You are removing the third item, not the second.



From michele.petrazzoDELETE at DELETEunipex.it  Fri Sep 29 08:58:39 2006
From: michele.petrazzoDELETE at DELETEunipex.it (Michele Petrazzo)
Date: Fri, 29 Sep 2006 12:58:39 GMT
Subject: Execute external code and get return value
In-Reply-To: <efj4rv$2fk$01$1@news.t-online.com>
References: <ze8Tg.128326$_J1.881759@twister2.libero.it>
	<efj4rv$2fk$01$1@news.t-online.com>
Message-ID: <3M8Tg.128379$_J1.881826@twister2.libero.it>

Peter Otten wrote:
> Michele Petrazzo wrote:
> 
>> I want to execute an external code, that become from a text file
>> (pe), call a function inside it and get its return value:
> 
> namespace = {} execfile("ext_code.txt", namespace) print
> namespace["funct2Call"]()
> 

Sorry, I forgot to say that "ext_code.txt" isn't a real file, but a text
become from a db, so or I create a temp file where I save the code and
pass its path to execfile, or use my post.

> Peter

Thanks,
Michele


From http  Sat Sep 30 08:04:02 2006
From: http (Paul Rubin)
Date: 30 Sep 2006 05:04:02 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
	<7xk63l7p67.fsf@ruckus.brouhaha.com>
	<eflarf$nbe$01$1@news.t-online.com>
	<7xk63l3f63.fsf@ruckus.brouhaha.com>
	<eflcu6$2n6$00$1@news.t-online.com>
Message-ID: <7xd59dh87h.fsf@ruckus.brouhaha.com>

Peter Otten <__peter__ at web.de> writes:
> >      all_heights = lambda:
> >                      (block.height for block in stack if
> >                      block.is_marked())
> 
> You still need the stop() trick to omit the heights after the marked block.

Yeah, that code was based on my earlier mis-read of the original post.
How's this:

    def blocks_until_mark():
       return itertools.takewhile(lambda block:\
                                      not block.is_marked(), \
                                  stack)

    height = sum(b.height for b in blocks_until_mark())
    if is_empty(blocks_until_mark()):
        raise SomeError("No marked block")

> Alternatively you can turn all_heights into a list (comprehension) which
> makes the test trivial. 

Yes, I felt it wasn't in the spirit of the thing to use that memory.

> I think it will be interesting to see how Python 3000's emphasis on
> iterators will affect overall code complexity.

We will need more iterator primitives, which are still evolving.


From gagsl-py at yahoo.com.ar  Tue Sep 12 18:10:40 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 19:10:40 -0300
Subject: error
In-Reply-To: <925928EF61EB8142A25835422EC26A81015498D2@PNE-HJN-MBX01.wip
	ro.com>
References: <925928EF61EB8142A25835422EC26A81015498D2@PNE-HJN-MBX01.wipro.com>
Message-ID: <7.0.1.0.0.20060912190821.05921c70@yahoo.com.ar>

At Tuesday 12/9/2006 09:16, prashant.burghate at wipro.com wrote:

>Today is my first day of working on python. I want to execute python
>script through C++ program. I found one very good article with example

I suggest *first* try to familiarize a little with Python (read the 
tutorial, it's easy and it's well written) and only then, try to 
embed it inside a C++ program.
Even if you are not going to write the Python scripts yourself.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 17:53:29 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 23:53:29 +0200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net> <ef37r0$5hj$3@lust.ihug.co.nz>
	<4nko0uFar902U2@individual.net>
	<1159015593.127666.178770@m7g2000cwm.googlegroups.com>
Message-ID: <4nlompFb1r94U1@individual.net>

MonkeeSage wrote:

> "The C++ standard provides _operator keywords_ (Fig. 21.8) that
> can be used in place of several C++ operators." (Deitel & Deitel,
> 2001; 1082).

Thanks. Only if I'd known that earlier ;)

Regards,


Bj?rn

-- 
BOFH excuse #39:

terrorist activities



From simon at brunningonline.net  Tue Sep 26 12:14:50 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 26 Sep 2006 17:14:50 +0100
Subject: A critique of cgi.escape
In-Reply-To: <slrnehij7q.evq.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
Message-ID: <8c7f10c60609260914u7fd977ffq281d4a588ee61848@mail.gmail.com>

On 26 Sep 2006 15:53:46 GMT, Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:
> To be honest I'm not sure what *sort* of code people test this way. It
> just doesn't seem appropriate at all for web page generating code. Web
> pages need to be manually viewed in web browsers, and validated, and
> checked for accessibility. Checking they're equal to a particular
> string just seems bizarre (and where does that string come from
> anyway?)

The kind of acceptance testing that you are talking about is very
important, but you can't automate "Does it look OK in a browser?".
Unit tests suitable for automation don't have anything to work with
*but* the generated HTML.

-- 
Cheers,
Simon B,
simon at brunningonline.net


From tjreedy at udel.edu  Thu Sep 21 07:13:52 2006
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 21 Sep 2006 07:13:52 -0400
Subject: naming objects from string
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>
Message-ID: <eets5f$vjh$1@sea.gmane.org>


"James Stroud" <jstroud at mbi.ucla.edu> wrote in message 
news:zvoQg.3828$e66.1118 at newssvr13.news.prodigy.com...
> Depends on your namespace, but for the local namespace, you can use this:
>
> py> a = object()
> py> a
> <object object at 0x40077478>
> py> locals()['bob'] = a
> py> bob
> <object object at 0x40077478>

If you put this code within a function, it probably will not work. 
locals() is usually a *copy* of the local namespace and writes do not write 
back to the namespace itself.

tjr





From jzgoda at o2.usun.pl  Tue Sep  5 15:16:37 2006
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Tue, 05 Sep 2006 21:16:37 +0200
Subject: Add NTLM proxy authentication to urllib2
In-Reply-To: <1157442556.636114.294400@i3g2000cwc.googlegroups.com>
References: <1157442556.636114.294400@i3g2000cwc.googlegroups.com>
Message-ID: <edkijp$2la$1@nemesis.news.tpi.pl>

looping napisa?(a):

> I have to make internet connections through an ISA proxy server that
> use NTLM or Kerberos authorization method.
> I've found a program in python called ntlmaps that act like a proxy and
> could make the NTLM authentication, but you have to run it and make all
> your connection through it, not an optimal solution.
> So what I really need is an enhanced urllib2 that support NTLM or
> Kerberos.
> I've found that pywin32 could manage NTLM encryption with the sspi
> module but I've no idea how to implement it in urllib2, NTLM
> authentication use a 'Token dance' between client and server.
> 
> Anyone has an experience, a demo or an idea to share ?

Look at NTLM APS (http://ntlmaps.sourceforge.net/), Dimitry did this
already (although not in urllib).

-- 
Jarek Zgoda
http://jpa.berlios.de/


From slowness.chen at gmail.com  Thu Sep  7 11:14:43 2006
From: slowness.chen at gmail.com (slowness.chen at gmail.com)
Date: 7 Sep 2006 08:14:43 -0700
Subject: the same strings, different utf-8 repr values?
Message-ID: <1157642083.249352.159080@m73g2000cwd.googlegroups.com>

I have two files:

test.py:
--------------------------------------------------
# -*- encoding : utf8 -*-
print 'in this file', repr('??')

# tt.txt is saved as utf8 encoding
f = file('tt.txt')
line1 = f.readline().strip()
print 'another file', repr(line1)
-------------------------------------------------------

tt.txt:
----------------------------------------------------
??
test
-------------------------------------------------------
run test.py and I get the following output:
in this file '\xe4\xb8\xad\xe6\x96\x87'
another file '\xef\xbb\xbf\xe4\xb8\xad\xe6\x96\x87'

and I cann't encode line1 like:
       line1.decode('utf8').encode('gbk')
get this error:
UnicodeEncodeError: 'gbk' codec can't encode character u'\ufeff' in
position 0:
illegal multibyte sequence

why did I get the different repr values?



From sybrenUSE at YOURthirdtower.com.imagination  Fri Sep 22 15:14:32 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Fri, 22 Sep 2006 21:14:32 +0200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
Message-ID: <slrneh8dgo.v2m.sybrenUSE@schuimige.stuvel.eu>

T enlightened us with:
> We all know that there are many softwares that require some license
> key or registration key to enable them.  How does one implement
> something like this in python?

Why do you want to? I've never seen software successfully protected by
such schemes. If you really want to protect your software, turn it
into a web application/service.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From DFeiock at ameripath.com  Thu Sep 14 07:30:52 2006
From: DFeiock at ameripath.com (Feiock, Dennis)
Date: Thu, 14 Sep 2006 06:30:52 -0500
Subject: BIOS Changes (enable WOL)
Message-ID: <9D4F7EF13ED8B5428EF6DF9FF0EADC55EFDD06@TXCLMAIL01.ameripath.local>

I was wondering if it is possible to access the BIOS settings on a
system using Python.  I would like to be able to write a script that
would enable WOL on a specified system.  For the most part, it would be
Win32 systems, but could be just about any flavor of UNIX as well.

 

Thanks for any help that can be provided,

 - DF

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From george.sakkis at gmail.com  Tue Sep 19 15:31:40 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 19 Sep 2006 12:31:40 -0700
Subject: value exists (newbie question)
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
	<1158688561.267994.231680@i42g2000cwa.googlegroups.com>
	<1158691966.421259.118880@h48g2000cwc.googlegroups.com>
	<20060919135758.C3718@eris.io.com>
Message-ID: <1158694299.990336.75620@i3g2000cwc.googlegroups.com>

eldorado wrote:

> Hello,
>
> I am trying to parse some files so that if a postal code exists, but is
> longer than five digits it will return me only the first five digits:
> ...
> for insDict in insureDict:
>  	insDict['postalcode'] = insDict.get('postalcode')[:5]
> ...
> This works, except for when I get a blank postalcode.  In which case I get
> the following error.
> ERR exceptions.TypeError: iteration over non-sequence
>
> What I would like to do is to check to make sure a value exists.  I just
> cannot seem to find the syntax to do that.  (not asking anyone to write my
> code, just looking for a pointer)
>
> Thanks

Hint: dict.get() takes an optional second argument.

George

PS: To make a new thread, don't hit "reply" on an existing thread and
change the subject. Just make a new thread.. duh.



From uymqlp502 at sneakemail.com  Thu Sep 14 14:32:36 2006
From: uymqlp502 at sneakemail.com (Russ)
Date: 14 Sep 2006 11:32:36 -0700
Subject: parameter files
References: <1158190017.832356.180050@h48g2000cwc.googlegroups.com>
	<1158197393.728067.179420@e3g2000cwe.googlegroups.com>
	<1158207004.664774.145740@i3g2000cwc.googlegroups.com>
	<mailman.59.1158208336.10491.python-list@python.org>
Message-ID: <1158258756.214993.138120@e3g2000cwe.googlegroups.com>

Thanks for the examples.

I don't think you understood what I meant by a "run." All I meant is
that I want to save the configuration, for reference purposes, that was
used for a particular run. That way I can reproduce the results if
necessary, and I can avoid confusion about which parameters were used
to get particular results.

I don't need a section for each run. I only need one set of parameters.
I suppose I could use the sections for different modules or classes,
each of which needs its own parameters.


Gabriel Genellina wrote:
> At Thursday 14/9/2006 01:10, Russ wrote:
>
> > > I would try a configuration file, instead of a python module.
> > > See ConfigParser:
> > > <http://docs.python.org/lib/module-ConfigParser.html>.
> > > You can save values for each "run" in a separate [section].
> > > Execfile is a pretty big hammer for this.
> >
> >Hey, that looks interesting, but those docs don't do it for me. Can you
> >point me to some more extensive examples of how to use ConfigParser?
>
> Just forget about interpolation and such; declare a section for each
> run in your config file:
>
> [run_name_one]
> a=123
> b=Test
> c=4.0
>
> [run_two]
> a=456
> b=Whatever
> c=0.1
>
> config = ConfigParser.ConfigParser()
> config.read(filename)
> a = config.getint('run_two','a') # a==456
> b = config.get('run_name_one','b') # b=='Test'
> section = 'run_two'
> c = config.getfloat(section,'c') # c==0.1
>
>
> Gabriel Genellina
> Softlab SRL
>
>
>
>
>
> __________________________________________________
> Pregunt?. Respond?. Descubr?.
> Todo lo que quer?as saber, y lo que ni imaginabas,
> est? en Yahoo! Respuestas (Beta).
> ?Probalo ya! 
> http://www.yahoo.com.ar/respuestas



From skip at pobox.com  Mon Sep 25 16:23:12 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 15:23:12 -0500
Subject: R.S.I. solutions?
In-Reply-To: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
Message-ID: <17688.15024.872210.413503@montanaro.dyndns.org>

>>>>> "Paddy" == Paddy  <paddy3118 at netscape.net> writes:
    Paddy> All this keyboarding has finally caught up with me and I'm
    Paddy> getting aches in my fingers.
    ...
    Paddy> I was wondering if any Pythonistas had been through this and
    Paddy> found something that worked for them?

There are probably lots of typing watchers out there.  I wrote one several
years ago that's still of some use, assuming you have Python+Tkinter
available:

    http://sourceforge.net/projects/watch/

The basic idea is that you define work and rest intervals.  At the end of
the work interval it forces you to rest by blanking the screen.  At the
beginning you start with short work and long rest periods (maybe 10 minutes
and four minutes, respectively).  As your RSI improves, you lengthen the
work time and reduce the rest time.  I found that when you got to the point
where you have something like 30 minutes of work and two minutes of rest you
no longer get much, if any, benefit from it.

Skip


From fakeaddress at nowhere.org  Fri Sep  8 23:53:59 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Sat, 09 Sep 2006 03:53:59 GMT
Subject: mysqldb + multi-threading
In-Reply-To: <mailman.199.1157770769.5279.python-list@python.org>
References: <0piMg.136445$LF4.125458@dukeread05>	<24kMg.11472$q63.11207@newssvr13.news.prodigy.com>	<mailman.177.1157747400.5279.python-list@python.org>	<yKmMg.7783$tU.2787@newssvr21.news.prodigy.com>
	<mailman.199.1157770769.5279.python-list@python.org>
Message-ID: <rVqMg.17265$%j7.747@newssvr29.news.prodigy.net>

skip at pobox.com wrote:
>     Bryan> Go with your gut. Python threads are reasonably portable, and
>     Bryan> work well on modern MS-Windows.
> 
>     >> Maybe ignore your gut and read the documentation. ;-)
> 
>     Bryan> What in the documentation do you think answers the question?
> 
> The part where it says that if MySQLdb.threadsafety == 1 it's not safe to
> share connections.

You can't share them among processes either, so I don't see
any advantage either way on that.

Besides his database library, the standard Python distribution
comes with everything needed to build portable multi-threaded
socket servers, in particular, one that runs on the O.P.'s
Windows platform. The same is not true of multi-process servers.


-- 
--Bryan


From hpsekhon at googlemail.com  Tue Sep  5 08:38:03 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Tue, 05 Sep 2006 13:38:03 +0100
Subject: Testing a website with HTTPS login and cookies
Message-ID: <44FD6FAB.607@googlemail.com>

Hi everyone,

I want to create a test that will do a proper login test to a web site 
but I need some pointers.

I need to login to the website by accessing an https url and posting to 
that, which should return a very small 302 reply with the address of the 
internal page. I need to take that page href and then access it, if I 
can do all that then the test passes. Of course because I have to access 
two urls I also need cookies for session handling. I've already tried 
bash which would have worked but for the cookie handling and webinject 
which is written in Perl, but this doesn't do exactly what I want in 
terms of output so I'd rather write something myself. (I'm also curious 
as to the best way to do this)

If anybody knows how to do this could they please give me a quick 
pointer and tell me what libraries I need to go read up on?


Thanks

Hari


From nogradi at gmail.com  Sat Sep 30 13:45:24 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 30 Sep 2006 19:45:24 +0200
Subject: loop over list and modify in place
Message-ID: <5f56302b0609301045t37f4f0e3qb30f542180883316@mail.gmail.com>

Is looping over a list of objects and modifying (adding an attribute
to) each item only possible like this?

mylist = [ obj1, obj2, obj3 ]

for i in xrange( len( mylist ) ):
    mylist[i].newattribute = 'new value'


I'm guessing there is a way to do this without introducing the (in
principle unnecessary) index i, so what I'm really looking for is a
looping method which doesn't pass references to the values of the
items but to the items themselves.


From nick at craig-wood.com  Wed Sep 27 04:30:04 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Wed, 27 Sep 2006 03:30:04 -0500
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
Message-ID: <slrnehkc4a.smm.nick@irishsea.home.craig-wood.com>

MonkeeSage <MonkeeSage at gmail.com> wrote:
>  In ruby there are several special literal notations, just like python.
>  In ruby it goes like this:
> 
>  %{blah} / %Q{blah} # same as "blah" but igornes " and '
>  %q{blah} # same as 'blah' but no interpolation
>  %w{blah blah} # same as "blah blah".split
>  %r{blah} # same as /blah/
>  %x{ls} # same as `ls`

These are snatched straight from perl.  In perl they are spelt
slightly differently

  q{blah}       r"""blah""" # not identical but similar
  qq{blah}      """blah"""  # no interpolation in python so no direct concept
  qw{blah blah} "blah blah".split()
  qr{blah}      re.compile(r"blah")
  qx{ls}        commands.getoutput("ls")

In perl (and maybe in ruby I don't know) the { } can be replaced with
any two identical chars, or the matching pair if bracketty, so q/blah/
or q(blah).

As a perl refugee, the only one I miss at all is qw{}, ie %w{} in ruby
the subject of this post.

In python when making __slots__ or module.__all__ you end up typing
lists of objects or methods and they turn out like this which is quite
a lot of extra typing

  __slots__ = ["method1", "method2", "method3", "method4", "method5"]

You can of course write it like this

  __slots__ = "method1 method2 method3 method4 method5".split()

which is nearly as neat as qw//, but not quite since the split() bit
comes at the end so it doesn't notify you that you have an array of
strings rather than a string.

I don't expect a replacement for %w{}, qw// to ever be added to
python, it is not the python way.  And the python way is why I am now
a python programmer not a perl programmer!

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From cooldudevamsee at gmail.com  Tue Sep 12 08:07:03 2006
From: cooldudevamsee at gmail.com (cooldudevamsee at gmail.com)
Date: 12 Sep 2006 05:07:03 -0700
Subject: Clarify Regex in Python.
Message-ID: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>

After may frustrated attempts I came to know that  "match" function in
python re package actually start the matchs at the begining of the
subject, where "search" will find the given pattern any where in the
subject.

My Problem is, I want to know how can I force match functions to match
the pattern any location in the subject. i.e I want to turn off before
said behaviour.


Thanks In advance.



From belindalategan at hotmail.com  Fri Sep  1 12:57:06 2006
From: belindalategan at hotmail.com (lind)
Date: 1 Sep 2006 09:57:06 -0700
Subject: used to work at ungerer lab?
In-Reply-To: <1157129459.409781.136900@i42g2000cwa.googlegroups.com>
References: <1157028103.075184.149250@i3g2000cwc.googlegroups.com>
	<mailman.10232.1157095597.27775.python-list@python.org>
	<1157129459.409781.136900@i42g2000cwa.googlegroups.com>
Message-ID: <1157129826.828364.316660@e3g2000cwe.googlegroups.com>

Yes, and Du Buisson's and a variety of others. Liked spiders and spent
time at the WNNR?
lind wrote:
> I am looking for an old friend, used to work at a path lab in Pretoria,
> dabbled in Scientology and rock climbing?  I know this is not
> friendster.com, but I really have to get into contact with him.
>
> Hendrik van Rooyen wrote:
> > <vedran_dekovic at yahoo.com> Wrote:
> >
> >
> > | Hi,
> > | I need help about Tkinter listbox widget.I want,when somebody click on
> > | any item(file)  in Listbox,then in new Label widget text must be
> > | selected item from server.
> > |
> > | my program (wrong example):
> > |
> > | import ftputil
> > | import Tkinter
> > | root=Tkinter.Tk()
> > | ftp=ftputil.FTPHost('some imaginary server')
> > |
> > | def LabelWidget(event):
> > |     a=Tkinter.Label(root,text=)  # Text must be only name and file
> > | format,example: sun.gif
> > |     a.grid()
> > |
> > |
> > |
> > | b=Tkinter.Listbox(root)
> > | b.insert(Tkinter.END,ftp._dir(''))
> > | b.place()
> > | c=Tkinter.Button(root,text='PRINT THIS FILE IN NEW LABEL WIDGET')
> > | c.bind('<Button-1>',LabelWidget)
> > | c.grid()
> > | root.mainloop()
> > |
> > |
> > | THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> >
> >
> > idx = b.curselection()        # - tells you which one was clicked
> > StringValue = b.get(idx)     # - returns the text
> > 
> > HTH - Hendrik



From MonkeeSage at gmail.com  Wed Sep 20 04:51:42 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 20 Sep 2006 01:51:42 -0700
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<mailman.299.1158709371.10491.python-list@python.org>
Message-ID: <1158742302.017037.185410@d34g2000cwd.googlegroups.com>

s = "There should be one -- and preferably only one -- obvious way to
do it".partition('only one')
print s[0]+'more than one'+s[2]

;)

Regards,
Jordan



From jon+usenet at unequivocal.co.uk  Tue Sep 26 10:02:39 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 14:02:39 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
	<slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
	<ef95kk$oan$1@news.albasani.net>
	<mailman.676.1159276577.10491.python-list@python.org>
	<slrnehiah5.9o0.jon+usenet@snowy.squish.net>
	<mailman.682.1159278667.10491.python-list@python.org>
Message-ID: <slrnehicnh.9o0.jon+usenet@snowy.squish.net>

In article <mailman.682.1159278667.10491.python-list at python.org>, Fredrik Lundh wrote:
>>> the same documentation tells people what function to use if they
>>> want to quote *every-thing* that might need to be quoted, so if
>>> people did actually understand everything that was written in a
>>> reasonably clear way, this thread wouldn't even exist.
>>
>> The fact that you don't understand that that's not true is the reason
>> you've been getting into such a muddle in this thread.
> 
> it's a fact that it's not true that the documentation points to the function
> that it points to ?  exactly what definitions of the words "fact" and "true"
> are you using here ?

You misunderstand again. The second half of the sentence is the untrue
bit ("if people did ... understand ... this thread wouldn't even exist"),
not the first.


From blue99 at interia.pl  Tue Sep 12 09:10:23 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 12 Sep 2006 06:10:23 -0700
Subject: error
In-Reply-To: <mailman.345.1158064847.5279.python-list@python.org>
References: <mailman.345.1158064847.5279.python-list@python.org>
Message-ID: <1158066623.060805.262800@p79g2000cwp.googlegroups.com>


prashant.burghate at wipro.com wrote:
> Hi,
[...]
> Step 3: Wrote the given script of multipication in a file named as
> multiply (using vi editor)

The name of module should be multiply.py

HTH,
Rob



From dbraden at invalid.add  Wed Sep 13 12:12:13 2006
From: dbraden at invalid.add (David J. Braden)
Date: Wed, 13 Sep 2006 16:12:13 GMT
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <mailman.411.1158115415.5279.python-list@python.org>
References: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>
	<mailman.411.1158115415.5279.python-list@python.org>
Message-ID: <x5WNg.1353$7I1.740@newssvr27.news.prodigy.net>

Travis E. Oliphant wrote:
> Brendon Towle wrote:
>> I need to simulate scenarios like the following: "You have a deck of  
>> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,  
>> replace it, and repeat N times."
>>
> 
> Thinking about the problem as drawing sample froms a discrete 
> distribution defined by the population might help.
> 
> For example, in SciPy you can define your own discrete random variable:
> 
> var = scipy.stats.rv_discrete(name='sample', 
> values=([0,1,2],[3/10.,5/10.,2/10.]))
> 
> Then
> 
> var.rvs(size=10000)
> 
> would quickly return an array of "draws"
> 
> If you didn't want to install SciPy, but were willing to install NumPy, 
> then the crux of the algorithm is to generate an entire array of uniform 
> random variables:  numpy.random.rand(count) and then map them through 
> the inverse cumulative distribution function to generate your samples. 
>  The inverse cumulative distribution function is just a series of steps 
> whose width depends on the probablity distribution.
> 
> Thus, the population defines the draw boundaries.  To make it easy, just 
> multiply the uniform random number by the total number of cards and then 
> the boundaries are on the integers of the number of each kind of card.
> 
> Here is an implementation.  I find this version to be 2x - 5x faster 
> depending on how many draws are used.
> 
> 
> import numpy as N
> 
> def randomDrawing_N(count, population):
>     probs = [x[0] for x in population]
>     res = [[0, item[1]] for item in population]
>     nums = N.random.rand(count)
>     cprobs = N.cumsum([0]+probs)
>     nums *= cprobs[-1]
>     for k, val in enumerate(probs):
>         res[k][0] += ((nums > cprobs[k]) & (nums < cprobs[k+1])).sum()
>     return res
> 
> 
> -Travis Oliphant
> 

In response to what Travis and Simon wrote -
(1) Where the heck can I find a description of scipy's stat functions? 
Documentation on these seems sparse.

(2) How does one set up a good timer for Python as implemented for 
Windows? (i.e., how can I make API calls to Windows from Python?)

Please bear with me, or not; I am /just/ starting off with Python.

Thanks,
Dave Braden


From p.lavarre at ieee.org  Thu Sep 28 13:25:43 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 28 Sep 2006 10:25:43 -0700
Subject: ctypes.c_void_p(-1) might not be C return (void *) -1
Message-ID: <1159464342.982140.200420@b28g2000cwb.googlegroups.com>

> Subject: Python CTypes translation of (pv != NULL)

And so then the next related Faq is:

Q: How should I test for ((void *) -1)?

A:

(pv == 0xffffFFFF) works often.

(ctypes.cast(pv, ctypes.c_void_p).value == 0xffffFFFF) works better.

((void *) -1) appears often in 32-bit Windows, behind the name
INVALID_HANDLE_VALUE of the type HANDLE that is def'ed as the type
PVOID that is def'ed as (void *).  -1 is xffffFFFF in 32-bit two's
complement.

The more complex comparison works more often because specifying a
restype doesn't decide the __class__ of the result.  For example, the
run below shows a <type 'long'> result value passed back from a C
routine that has a c_void_p restype:

$ gcc -o passlib.so -dynamiclib -Wall passlib.c
$ python results.py
True False c_void_p(4294967295L) <class 'ctypes.c_void_p'>
True True 4294967295 <type 'long'>
$
$ cat passlib.c
void * passback(int ii)
{
        return (void *) ii;
}
$
$ cat results.py
from ctypes import *
passlib = cdll.LoadLibrary('./passlib.so')
passback = _fx = passlib.passback
_fx.restype = c_void_p
_fx.argtypes  = [c_int]
def test(pv):
    print cast(pv, c_void_p).value == 0xffffFFFF,
    print pv == 0xffffFFFF,
    print pv, pv.__class__
test(c_void_p(-1))
test(passlib.passback(-1))
$ 

All true?  All bogus?  Partly bogus?  Curiously yours, Pat LaVarre



From fredrik at pythonware.com  Tue Sep 26 01:51:09 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 07:51:09 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <5w2Sg.12716$v%4.6241@newsread1.news.pas.earthlink.net>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<5w2Sg.12716$v%4.6241@newsread1.news.pas.earthlink.net>
Message-ID: <efaf4d$gfk$1@sea.gmane.org>

Dennis Lee Bieber wrote:

> 	Your remap operation will create a dictionary using the first field
> as the key, and the rest of the fields as a list identified by that
> key.... COPY 3

the tuple-to-dictionary conversion mostly shuffles pointers around, 
though; it's not a full copy of all the data in the result set.

</F>



From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep 25 03:28:51 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 25 Sep 2006 09:28:51 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
Message-ID: <slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
>         "select * from details where person_name like"
>         " concat(\"%%\", %s, \"%%\")" \
>     % \
>         QuoteSQL(name, True)

Wouldn't this be a whole lot better?

cursor.execute(
    "select * from details where person_name like ?",
    '%' + name + '%'
)

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From g_sauthoff at web.de  Tue Sep  5 07:41:30 2006
From: g_sauthoff at web.de (Georg Sauthoff)
Date: 5 Sep 2006 11:41:30 GMT
Subject: Access elements from nested tuples
References: <4m3ht8F4avl8U1@news.dfncis.de>
	<mailman.10350.1157404270.27775.python-list@python.org>
Message-ID: <4m563aF4ju8bU1@news.dfncis.de>

On 2006-09-04, Tim Chase <python.list at tim.thechases.com> wrote:

Hi,

[nested tuples]

thanks - I should not post before 8 am or 10 pm ...

Regards
Georg Sauthoff


From gerold.penz at tirol.utanet.at  Wed Sep  6 14:27:29 2006
From: gerold.penz at tirol.utanet.at (Gerold Penz)
Date: Wed, 06 Sep 2006 20:27:29 +0200
Subject: How to insert an email-link into wxPython's HtmlWindow
In-Reply-To: <1157549764.927420.98170@i3g2000cwc.googlegroups.com>
References: <1157539420.812552.60770@m79g2000cwm.googlegroups.com>
	<1157549764.927420.98170@i3g2000cwc.googlegroups.com>
Message-ID: <edn3ue$jdq$1@newsreader2.utanet.at>

NoelByron at gmx.net schrieb:
> Now, you have reduced your problem to: how do I call the standard Email
> client? I have no idea...

Hi!

With Windows, you can use ``os.startfile()``:

   import os
   os.startfile("mailto:hello at world.at?subject=Hello&body=World")


regards,
Gerold
:-)


-- 
________________________________________________________________________
Gerold Penz - bcom - Programmierung
     gerold.penz at tirol.utanet.at | http://gerold.bcom.at | http://sw3.at
Ehrliche, herzliche Begeisterung ist einer der
     wirksamsten Erfolgsfaktoren. Dale Carnegie


From eldorado at io.com  Tue Sep 19 15:06:40 2006
From: eldorado at io.com (eldorado)
Date: Tue, 19 Sep 2006 14:06:40 -0500
Subject: value exists (newbie question)
In-Reply-To: <1158691966.421259.118880@h48g2000cwc.googlegroups.com>
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>  
	<1158688561.267994.231680@i42g2000cwa.googlegroups.com>
	<1158691966.421259.118880@h48g2000cwc.googlegroups.com>
Message-ID: <20060919135758.C3718@eris.io.com>

Hello,

I am trying to parse some files so that if a postal code exists, but is 
longer than five digits it will return me only the first five digits:
...
for insDict in insureDict:
 	insDict['postalcode'] = insDict.get('postalcode')[:5]
...
This works, except for when I get a blank postalcode.  In which case I get 
the following error.
ERR exceptions.TypeError: iteration over non-sequence

What I would like to do is to check to make sure a value exists.  I just 
cannot seem to find the syntax to do that.  (not asking anyone to write my 
code, just looking for a pointer)

Thanks


-- 
Randomly generated signature --
In God I Trust -- on all others I use dsniff, ettercap and lczroex


From sebastien.ramage at gmail.com  Mon Sep 25 05:08:48 2006
From: sebastien.ramage at gmail.com (=?iso-8859-1?q?S=E9bastien_Ramage?=)
Date: 25 Sep 2006 02:08:48 -0700
Subject: PyOpenGL pour python 2.5 ???
Message-ID: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>

Bonjour ? tous,

Dans la folie j'ai install? le nouveau python, impatient de voir les
nouveaut?s
mais je pense que j'ai ?t? un peu rapide car j'ai voulu utiliser
pyOpenGL et l? probl?me il n'existe pas pour python 2.5 ?!!! de plus
il semble que pyopengl est ?t? abandonn? depuis 2005 ? plus rien ne
bouge sur le site...

je suis sous windows et je ne dispose pas des outils pour faire moi
m?me une compilation, (en supposant qu'il n'y aurait que ?a a faire)

alors si quelqu'un a plus d'info pour utiliser l'opengl avec python
2.5...


Merci
Seb



From johnzenger at gmail.com  Tue Sep 26 09:51:19 2006
From: johnzenger at gmail.com (johnzenger at gmail.com)
Date: 26 Sep 2006 06:51:19 -0700
Subject: Copyright lawyer advises "be careful" using Python?
Message-ID: <1159278679.023048.275710@i42g2000cwa.googlegroups.com>

I was scanning the 9/13/2006 issue of the "Electronic Commerce & Law
Report," which is a newsletter for lawyers published by BNA.  They have
an article headlined "Game Developers Making Tomorrow's Hits Face Host
of Copyright Issues Along the Way," and the article is mostly a writeup
of a speech given by Paul Tauger, identified as "an IP attorney with
Schnader Harrison Segal & Lewis LLP, San Francisco."  It contains this
final paragraph:

"Be Careful Using Open Source Tools.  Game developers are under
constant pressure to deliver games under tight deadlines.  Open source
software tools can help speed the development process, but may carry
with them certain legal risks, Tauger explained.  One open source tool
popular with the game development community is Python.  Unfortunately,
the Python Software Foundation's license agreement leaves a lot of
unanswered questions about the origin and precise ownership of the
tool's code.  The license refers to six separate entities that, at one
point or another, contributed to the tool's development.  PSF's license
disclaims any warranties of non-infringement and disavows any
indemnification obligation.  In theory, if some aspect of Python was
deemed to infringe copyrighted code, it could create legal headaches
for game developers who rely upon the tool to build certain parts of
their games.  'Be aware of the risks attendant,' Tauger said."  (page
914)

What is our response?  Is the PSF that much different from any other
open source license?  Can anyone identify everyone who ever contributed
to the Linux source code?  Does ANY free "tool" indemnify people?  In
fact, does Microsoft indemnify Visual Studio users against the risk
that one day the BASIC language will be found to have been infringing a
patent all along?



From robert.kern at gmail.com  Wed Sep 27 19:41:14 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 27 Sep 2006 18:41:14 -0500
Subject: Difference between two dates in seconds
In-Reply-To: <pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>	<mailman.822.1159381205.10491.python-list@python.org>
	<pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
Message-ID: <eff26l$6me$1@sea.gmane.org>

Steven D'Aprano wrote:
> On Wed, 27 Sep 2006 20:16:52 +0200, Fredrik Lundh wrote:
> 
>> Claes at work wrote:
>>
>>> Please tell me there is a simpler way than subtracting two datetimes
>>> to get a timedelta and then compute
>>>
>>> days * number of seconds per day + seconds
>>>
>>> from it myself??
>> why would you have to do that yourself?  why not let Python do it for 
>> you?  here's the code:
>>
>>     seconds = td.days * 86400 + td.seconds
> 
> I'm sure somebody as experienced as Fredrik doesn't need to be told why
> peppering code with magic constants like 84600 are a less than ideal
> solution -- and for those who do need to be told, carefully compare what I
> wrote to what Fredrik wrote to see one of those reasons.

Well, you don't pepper your code with magic numbers. You write a well-named 
function and pepper your code with calls to that function.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From apardon at forel.vub.ac.be  Tue Sep 26 09:42:43 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 26 Sep 2006 13:42:43 GMT
Subject: Surprise using the 'is' operator
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
	<mailman.658.1159265280.10491.python-list@python.org>
	<slrnehi6qc.rcu.apardon@rcpc42.vub.ac.be>
	<1159275544.730927.101160@k70g2000cwa.googlegroups.com>
Message-ID: <slrnehibij.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-26, John Roth <JohnRoth1 at jhrothjr.com> wrote:
>
> Antoon Pardon wrote:
>>
>> I find this a bit oddly worded. Now the "may always reuse" phrase
>> suggests this is not an obligation and I can certainly understand
>> that in the case of integers. But when you enumerate examples you
>> include None and Booleans, creating the suggestion these don't
>> have to be implemented as singletons either and that there can be
>> more than one None, True and False object. Now I probably just
>> misunderstand, but I'm wondering, is there somewhere in the language
>> reference that specifies these have to be singletons?
>
> Yes. The topic "The standard Type Hierarchy" in the
> Language reference specifies this exactly.

Thank you very much.

-- 
Antoon Pardon


From blue99 at interia.pl  Wed Sep 20 07:24:53 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 20 Sep 2006 04:24:53 -0700
Subject: jpype package, could be path problem
In-Reply-To: <1158750006.130994.241360@d34g2000cwd.googlegroups.com>
References: <1158743920.654022.297190@k70g2000cwa.googlegroups.com>
	<1158745981.761814.251580@h48g2000cwc.googlegroups.com>
	<1158750006.130994.241360@d34g2000cwd.googlegroups.com>
Message-ID: <1158751492.947800.273360@e3g2000cwe.googlegroups.com>


kelemen.viktor wrote:
> Hi
>
> thanks for your suggestions
>
> ive modified the sample code

You've modified it incorrect.

> "
> import jpype
> from jpype import *

You should use "import jpype" OR "from jpype import *" (not
recommended)
but NOT BOTH.

> jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
> java.lang.System.out.println("hello world")
> shutdownJVM()
> "
>
> and its working. It seems to be quite strange.
> What would be the difference between the two import?

1. "import jpype"

This does not enter the name of the function startJVM defined in jpype
directly in the current symbol table; it only enters the module name
jpype there.
Using the module name you can access the function like that:

jpype.startJVM()

2. "from jpype import"

This enters the name of the function startJVM in the currrent symbol
table,
so you can access the function just like that:

startJVM()

And have you read this: http://docs.python.org/tut/node8.html ?

HTH,
Rob



From onurb at xiludom.gro  Thu Sep 28 10:26:04 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 16:26:04 +0200
Subject: remove the last character or the newline character?
In-Reply-To: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
References: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
Message-ID: <451bdb7c$0$8871$636a55ce@news.free.fr>

Daniel Mark wrote:
> Hello all:
> 
> I have the following snippet:
> 
> In [1]: fileName = 'Perfect Setup.txt\n'
> In [2]: fileName = fileName[0:len(fileName)-1)]   # remove the '\n'

  fileName = fileName.rstrip('\n')
or just a plain:
  fileName = fileName.strip()

> character
> In [3]: fileName
> Out[3]: 'Perfect Setup.txt'
> 
> Question one:
> Does python provide any function that can remove the last character of
> a string?

Not directly, since Python strings are immutable objects. If you want a
copy of the string without the last char *whatever it is*, you can just use
  somestr = somestr[0:-1]

But in your situation, it's usually safer to use [lr]?strip()

> 
> Question two:
> Does python provide any function that can remove the newline character
> from a string if it exists?

Here again, you cannot *remove* anything from a string - you can just
have a modified copy copy of the string. (NB : answer is just above :
use str.strip())

HTH

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From sjmachin at lexicon.net  Wed Sep 20 18:28:52 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 15:28:52 -0700
Subject: How do I define a global constant...
In-Reply-To: <1158789928.010800.283130@e3g2000cwe.googlegroups.com>
References: <1158789928.010800.283130@e3g2000cwe.googlegroups.com>
Message-ID: <1158791332.573592.98640@m7g2000cwm.googlegroups.com>


SpreadTooThin wrote:
> How do I define a constant that I can use in my script...
> For example lets say I have a file called constants.py and in there I
> have PI = 3.14
>
> in my test script I do:
>
> from constants import *
>
> How do I access PI later on?

Like this:

inaccurate_estimate_of_area = PI * radius ** 2 # :-)

You may wish to have a look at the built-in math module:

from math import *
much_better_area = pi * radius ** 2

HTH,
John



From tkpmep at hotmail.com  Wed Sep 20 15:02:47 2006
From: tkpmep at hotmail.com (tkpmep at hotmail.com)
Date: 20 Sep 2006 12:02:47 -0700
Subject: SciPy Optimization syntax
Message-ID: <1158778967.058080.137980@i42g2000cwa.googlegroups.com>

I'm trying to optimize a function using SciPy's optimize.fmin, but am
clearly getting the syntax wrong, and would be grateful for some
guiidance. First, here's the function

def func(Y,x):
    """Y holds samples of a function sampled at t=-3,-2,-1,0,1,2,3.
        Y[3]=0 always.
        func returns the absolute value of the maximum NEGATIVE
        error from a straight line fit with slope x and intercept 0"""

    Y[0] = Y[0] - 3*x
    Y[1] = Y[1] - 2*x
    Y[2] = Y[2] - x
    Y[3] =  0
    Y[4] = Y[4] + x
    Y[5] = Y[5] + 2*x
    Y[6] = Y[6] + 3*x

    error = abs(max(min(Y),0)

    return 0

I'd now like to minimize this using optimize.fmin. I first defined
>>Y = [0, 0, 0, 0, 1, 2, 3]
>>x = 1

and then typed
>>optimize.fmin(func,  args=(Y,x) )

I expected the function to retun x=0 as the optimal value,  but instead
got the following error messsage:
Traceback (most recent call last):
  File "<pyshell#24>", line 1, in -toplevel-
    optimize.fmin(func,args=(optionPnL,x))
TypeError: fmin() takes at least 2 non-keyword arguments (1 given)

I then tried
>>optimize.fmin(func,  x0 =x, args=(Y,x) )

and got a slightly different error message:
Traceback (most recent call last):
  File "<pyshell#25>", line 1, in -toplevel-
    optimize.fmin(func,x0=x, args=(optionPnL,1))
  File "C:\Python24\lib\site-packages\scipy\optimize\optimize.py", line
176, in fmin
    N = len(x0)
TypeError: len() of unsized object

What am I doing wrong, and what's the appropriate fix?

Thanks in advance

Thomas Philips



From roy at panix.com  Tue Sep 12 23:22:32 2006
From: roy at panix.com (Roy Smith)
Date: Tue, 12 Sep 2006 23:22:32 -0400
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<4mnvrhF72ppeU1@uni-berlin.de>
	<1158104377.822787.185730@b28g2000cwb.googlegroups.com>
	<1hlkidf.fm1voc1b64uy5N%aleax@mac.com>
Message-ID: <roy-03D656.23223212092006@reader1.panix.com>

In article <1hlkidf.fm1voc1b64uy5N%aleax at mac.com>,
 aleax at mac.com (Alex Martelli) wrote:

> metaperl <metaperl at gmail.com> wrote:
> 
> > Diez B. Roggisch wrote:
> > > metaperl schrieb:
> > > >   -->  python -i
> > > >>>> class = "algebra"
> > > >   File "<stdin>", line 1
> > > >     class = "algebra"
> > > >           ^
> > > > SyntaxError: invalid syntax
> > > >
> > > >
> > > > Why isn' t the parser smart enough to see that class followed by an
> > 
> > >  the few reserved words won't matter usually.
> > 
> > woe be unto the ORMs who try to map database columns to Python
> > attributes.
> 
> I'm gonna skip my usual anti-ORM rant, because there ARE valid case for
> "mapping external names to Python identifiers" -- e.g., remote protocols
> such as XML-RPC, automatic constructers of FF interfaces, etc.  Such
> code generators -- targeting ANY language currently alive -- obviously
> have to possess some minimal knowledge of the target language's syntax,
> and the obvious solution is to systematically transform identifiers
> which would otherwise be keywords.  The one most popular convention is
> to append an underscore -- so that 'pass' becomes 'pass_', and so on.
> 
> 
> Alex
>  

Also, keywords are only reserved in the context of identifiers.  They can 
certainly appear as string literals used as dictionary keys:

attributes["class"] = "algebra"


From bignose+hates-spam at benfinney.id.au  Thu Sep 28 18:44:22 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 29 Sep 2006 08:44:22 +1000
Subject: ANN: CherryPy 3.0.0 beta 2
In-Reply-To: <d66b7a7f0609280843v6a208681p41f9737fdd92399e__31319.4513008513$1159458444$gmane$org@mail.gmail.com>
	(Christian Wyglendowski's message of "Thu, 28 Sep 2006 11:43:21
	-0400")
References: <d66b7a7f0609280843v6a208681p41f9737fdd92399e__31319.4513008513$1159458444$gmane$org@mail.gmail.com>
Message-ID: <87irj7k3w9.fsf@benfinney.id.au>

Please don't post HTML message bodies to a public mailing list. This
release announcement contained nothing that requires anything but
plain text, and HTML simply makes the document needlessly more complex
to render.


From fredrik at pythonware.com  Tue Sep 26 03:16:11 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 09:16:11 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efaj9p$fqq$2@lust.ihug.co.nz>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>
	<efaj9p$fqq$2@lust.ihug.co.nz>
Message-ID: <efak3q$tk3$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

> What other kind of mapping could you produce?

and here we go again.  how about reading the code the OP posted, or the 
first few followups?

</F>



From george.sakkis at gmail.com  Fri Sep 29 00:39:49 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 28 Sep 2006 21:39:49 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
Message-ID: <1159504789.195261.325120@i42g2000cwa.googlegroups.com>

Gabriel Genellina wrote:

> At Thursday 28/9/2006 22:07, Lawrence D'Oliveiro wrote:
>
> >How about this: (where n is the integer you want to convert):
> >
> >     "".join([["0", "1"][(1 << i & n) != 0] for i in
> > range(int(math.ceil(math.log(n, 2))) - 1, -1, -1)])
>
> Uhm... so to generate a binary string you have to import the math
> module, convert the integer to float, compute a non-standard
> logarithm, and then...
> What if n<=0?
> Too much, don't you think? :)

Having recently discovered the joy of obfuscated python thanks to the
Code Golf challenges, here's the shortest non-recursive function I came
up with (all integers, signed):

f=lambda n:'-'[:n<0]+''.join(str(m&1)for m in iter(
  lambda x=[abs(n)]:(x[0],x.__setitem__(0,x[0]>>1))[0],0))[::-1]or'0'

Any takers ? ;-)

George



From beliavsky at aol.com  Wed Sep 27 19:23:25 2006
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 27 Sep 2006 16:23:25 -0700
Subject: OT: productivity and long computing delays
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
Message-ID: <1159399405.821242.45750@i3g2000cwc.googlegroups.com>

Paul Rubin wrote:
> I'm doing something where I frequently but unpredictably (i.e. I can't
> plan for it in advance) hit a snag that requires me to rebuild a large
> project.  The rebuild takes a couple hours.  During that time, I'm
> twiddling my thumbs and/or posting here, i.e. not getting anything
> useful done.  But the delay is not long enough that I can really
> switch to another project for a while.

Two hours is a long time! Maybe it takes a programmer 10 minutes to get
his mind focused on a new project, but that still leaves 110 productive
minutes. I think many programmers in corporate environments would
regard 2-hour blocks as luxuries. I have wondered the same thing as you
(how to be productive during "gaps"), but in situations where I am
often waiting a minute for a program to compile or run, not hours. I
suggest immersing yourself in the second project during 2-hour gaps.

>From reading your posts here I think you are a more experienced
programmer than I. I am a "quant" who programs, not a "programmer". But
those are my thoughts.



From johnjsal at NOSPAMgmail.com  Wed Sep 27 13:57:34 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 17:57:34 GMT
Subject: ElementTree and proper identation?
Message-ID: <iYySg.34$1n3.469@news.tufts.edu>

I've been doing a little studying of ElementTree and it doesn't seem 
very satisfactory for writing XML files that are properly 
formatted/indented. I saw on the website that there is an 
indent/prettyprint function, but this isn't listed in the Python docs 
and I didn't see it after doing a dir(), so I guess it isn't a part of 
the Python version.

Did I miss something somewhere else, or can you just not use ElementTree 
to write formatted XML files as they'd look if done by hand?

Thanks.


From robert.kern at gmail.com  Tue Sep 26 15:34:52 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 26 Sep 2006 14:34:52 -0500
Subject: f2py on windows tutorials
In-Reply-To: <1159297093.543871.108100@h48g2000cwc.googlegroups.com>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>	<mailman.504.1159044688.10491.python-list@python.org>
	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>
Message-ID: <efbvcn$35e$1@sea.gmane.org>

Flavio wrote:
> Its been a while since i Tried this and right now I have no access to a
> windows
> machine to try it and show you the error messages I was getting.
> 
> I was using the latest version of Python Enthouhgt edition. But I was
> trying to compile the fortran code directly with f2py.
> 
> What I would like to have is a setup.py tailored to compile an f2py
> extension on windows. Have you got one of these? if so please send it
> to me and I can certainly figure out the rest.


from numpy.distutils.core import setup, Extension

setup(name='something',
       ext_modules=[Extension('my_subroutines',
                              sources=['wrapper.pyf', 'lib1.f', 'lib2.f'],
                    )],
)

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From wildemar at freakmail.de  Wed Sep 20 10:04:18 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Wed, 20 Sep 2006 16:04:18 +0200
Subject: Pythonic way to condese my array
In-Reply-To: <eeqhh3$qd0$1@sea.gmane.org>
References: <Zv3Qg.699$ef2.677@fed1read09> <eeqhh3$qd0$1@sea.gmane.org>
Message-ID: <45114A62.5000601@freakmail.de>

Robert Kern wrote:
> Of course, code that I wouldn't get fired for would have a slightly greater line 
> count and fewer one-letter variable names.

Great :D!
That one made me laugh!

wildemar


From skip at pobox.com  Sat Sep  9 23:55:20 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sat, 9 Sep 2006 22:55:20 -0500
Subject: pyExcelerator question - dates map to floats?
Message-ID: <17667.36008.986704.400318@montanaro.dyndns.org>

I'm experimenting with pyExcelerator and am reading an XLS file which
contains dates.  In Excel on my Mac they look like "09/13/06".  After
parsing them out of the .XLS file they are floats, e.g. 38973.0.  I assume
that's an offset in days.  Doing a little date math I come up with a base
date of approximately (though not quite) 1900-01-01:

    >>> import datetime
    >>> dt = datetime.timedelta(days=-38973)
    >>> datetime.date(2006, 9, 13) + dt
    datetime.date(1899, 12, 30)
    >>> datetime.date(1900, 1, 1) - dt
    datetime.date(2006, 9, 15)

Is there some way to get pyExcelerator from doing this conversion and
instead return dates as strings?  If I'm reading an arbitrary worksheet and
don't know which columnn might be a date, it's kind of hard to guess.

Skip



From python at hope.cz  Wed Sep 20 10:26:45 2006
From: python at hope.cz (Lad)
Date: 20 Sep 2006 07:26:45 -0700
Subject: Is it possible to change a picture resolution with Python?
Message-ID: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>

Is it possible to change a picture resolution with Python?
Let's say I have a picture with a resolution of 96 dpi and I would like
to increase to 256dpi or higher.
Thank you for your reply.
LL



From gnewsg at gmail.com  Thu Sep 21 11:15:35 2006
From: gnewsg at gmail.com (billie)
Date: 21 Sep 2006 08:15:35 -0700
Subject: get process id...
In-Reply-To: <mailman.389.1158826219.10491.python-list@python.org>
References: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
	<1158769823.998456.171070@b28g2000cwb.googlegroups.com>
	<1158824998.589895.36630@m7g2000cwm.googlegroups.com>
	<mailman.389.1158826219.10491.python-list@python.org>
Message-ID: <1158851735.705638.77600@m73g2000cwd.googlegroups.com>


Fredrik Lundh ha scritto:

> billie wrote:
>
> >> under linux, do:
>  >
> >>   import os
> >>   os.getpid()
> >
> > Under Windows:
>  >
> > import ctypes
> > ctypes.windll.kernel32.GetCurrentProcessId()
>
> getpid() works just fine on Windows too:
>
>  >>> import ctypes
>  >>> ctypes.windll.kernel32.GetCurrentProcessId()
> 1916
>  >>> import os
>  >>> os.getpid()
> 1916

I tought it doesn't work. Good



From cbigam at somewhereelse.nucleus.com  Wed Sep 20 18:26:48 2006
From: cbigam at somewhereelse.nucleus.com (Colin B.)
Date: Wed, 20 Sep 2006 22:26:48 GMT
Subject: Need some help here
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <4511c024@news.nucleus.com>

In comp.unix.solaris Kareem840 <KareemOfweet840 at hotmail.com> wrote:
> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.

Better idea. Sell your computer. Or your organs.



From rhymes at myself.com  Thu Sep  7 13:14:00 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 7 Sep 2006 19:14:00 +0200
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1hlavwx.237nu65lozv5N%rhymes@myself.com>
	<edphkq$ddp$1@foggy.unx.sas.com>
Message-ID: <1hlb5y9.1wfryif1975d3gN%rhymes@myself.com>

Kevin D. Smith <Kevin.Smith at sas.com> wrote:
> So in other words, what you're saying is that the only issue I have 
> left is the exact issue that I described in my initial post that you 
> claimed isn't a problem...  Great!  I guess I'l get right down to work
> compiling that extension now.

What I mean is that you have to find a way to get the toolkit. I don't
think MS will sue you if you borrow the compiler from a friend or
"download" it. Otherwise you can try with MingW I guess...

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From nemesis at nowhere.invalid  Wed Sep 13 00:33:04 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Wed, 13 Sep 2006 04:33:04 GMT
Subject: [ANN] XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
Message-ID: <20060913043303.2230.17716.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Nemesis" scriveva:

> XPN (X Python Newsreader) is a multi-platform newsreader with Unicode
> support. It is written with Python+GTK. It has features like
> scoring/actions, X-Face and Face decoding, muting of quoted text,
> newsrc import/export, find article and search in the body, spoiler
> char/rot13, random taglines and configurable attribution lines.

> Changes in this release:

I'm sorry but I forgot to write that the article format is changed, so
if you want to keep your old articles you should perform a "Export
Newsrc" with the old XPN version and then a "Import Newsrc" with the
newer one.

-- 
Redneck: (n); a person whose family tree doesn't fork.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From polychrom at softhome.net  Sat Sep  2 19:25:12 2006
From: polychrom at softhome.net (mistral)
Date: 2 Sep 2006 16:25:12 -0700
Subject: How to run Python file?
In-Reply-To: <Xns98328FE567381rzed@208.49.80.253>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
	<pan.2006.09.02.15.34.21.458976@users.sf.net>
	<edcc3k$em0$1@inews.gazeta.pl>
	<1157218244.750434.36220@h48g2000cwc.googlegroups.com>
	<Xns98328FE567381rzed@208.49.80.253>
Message-ID: <1157239512.139823.15650@74g2000cwt.googlegroups.com>


Rick Zantow ?????(?):

> "Ant" <antroy at gmail.com> wrote in news:1157218244.750434.36220
> @h48g2000cwc.googlegroups.com:


> zefciu wrote:
> Pontus Ekberg wrote:
> ...
 > $ python test.py
 >
 > or
 >
 > $ ./test.py (if test.py is executable)
 >
 >
> Thats if you use un*x.  If you word under windows, the first would
 work,
 >
 > As would:
 >
 >> test.py
 >
 > Assuming python grabbed the .py extensions correctly (which it
shouold
 > have done with any recent version).
 >
 >

> As would:

 > test

 ... assuming you're on windows (Win2K or WinXP at least) and you've
 added ".py" to your PATHEXT environment variable.

> --
> rzed

-------------

Assuming I have Windows XP, and I installed ActiveState Python. No any
other additional manipulations were done, no any PATHEXTes environment
variables, etc, etc, nothing. How many preparatory work required to run
one small python file?



From stdazi at gmail.com  Sat Sep 23 10:39:04 2006
From: stdazi at gmail.com (stdazi)
Date: 23 Sep 2006 07:39:04 -0700
Subject: Spliting a string on non alpha characters
Message-ID: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>

Hello!

I'm relatively new to python but I already noticed that many lines of
python code can be simplified to a oneliner by some clever coder. As
the topics says, I'm trying to split lines like this :

'foo bar- blah/hm.lala' -> [foo, bar, blah, hm, lala]

'foo////bbbar.. xyz' -> [foo, bbbar, xyz]

obviously a for loop catching just chars could do the trick, but I'm
looking for a more elegant way. Anyone can help?



From exarkun at divmod.com  Sun Sep  3 12:50:00 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Sun, 3 Sep 2006 12:50:00 -0400
Subject: Python style: to check or not to check args and data members
In-Reply-To: <44fae3d2$0$31322$626a54ce@news.free.fr>
Message-ID: <20060903165000.1717.125105876.divmod.quotient.38006@ohm>

On Sun, 03 Sep 2006 16:29:11 +0200, Bruno Desthuilliers <bdesth.quelquechose at free.quelquepart.fr> wrote:
>Paul Rubin a ?crit :
>> Bruno Desthuilliers <onurb at xiludom.gro> writes:
>>
>>>I've rarely encoutered "silent" data corruption with Python - FWIW, I
>>>once had such a problem, but with a lower-level statically typed
>>>language (integer overflow), and I was a very newbie programmer by that
>>>time. Usually, one *very quickly* notices when something goes wrong.
>>
>>
>> The same thing can happen in Python, and the resulting bugs can be
>> pretty subtle.  I noticed the following example as the result of
>> another thread, which was about how to sort an 85 gigabyte file.
>> Try to put a slice interface on a file-based object and you can
>> hit strange integer-overflow bugs once the file gets larger than 2GB:
>>
>>     Python 2.3.4 (#1, Feb  2 2005, 12:11:53)
>>     [GCC 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)] on linux2
>>     Type "help", "copyright", "credits" or "license" for more information.
>>     >>> print slice(0, 3**33)
>>     slice(0, 5559060566555523L, None)         # OK ...
>>
>> So we expect slicing with large args to work properly.  But then:
>>
>>     >>> class A:
>>     ...   def __getitem__(self, s):
>>     ...     print s
>>     ...
>>     >>> a = A()
>>     >>> a[0:3**33]
>>     slice(0, 2147483647, None)                # oops!!!!
>>     >>>
>
>Looks like a Python bug, not a programmer error. And BTW, it doesn't
>happens with >=2.4.1
>
>Python 2.4.1 (#1, Jul 23 2005, 00:37:37)
>[GCC 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)] on
>linux2
>Type "help", "copyright", "credits" or "license" for more information.
> >>> print slice(0, 3**33)
>slice(0, 5559060566555523L, None)
> >>> class A(object):
>...     def __getitem__(self, s):
>...             print s
>...
> >>> A()[0:3**33]
>slice(0, 5559060566555523L, None)
> >>>

Note that it _does_ happen with current trunk at HEAD:

Python 2.6a0 (trunk:51698M, Sep  3 2006, 12:40:55) 
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> slice(0, 3 ** 33)
slice(0, 5559060566555523L, None)
>>> class x:
...     def __getitem__(self, idx): print idx
... 
>>> x()[:3**33]
slice(0, 2147483647, None)
>>> 

Jean-Paul


From sanxiyn at gmail.com  Thu Sep  7 22:19:30 2006
From: sanxiyn at gmail.com (sanxiyn at gmail.com)
Date: 7 Sep 2006 19:19:30 -0700
Subject: IronPython on Mono howto
In-Reply-To: <mailman.122.1157636133.5279.python-list@python.org>
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
	<mailman.122.1157636133.5279.python-list@python.org>
Message-ID: <1157681970.481777.256230@d34g2000cwd.googlegroups.com>

skip at pobox.com wrote:
> One thing I did find especially annoying though was that none of the editing
> keys worked.  DELETE, BACKSPACE, Ctrl-U.  All just inserted themselves.
> Ctrl-D didn't exit.  (I had to "raise SystemExit" to exit.)
>
> Is this a known problem?  Is it a Mono thing or an IronPython thing?  Any
> workaround?

It is a known problem. It is a Mono bug. (ncurses-based colored console
is not really complete.) There is a workaround.

Apply
http://sparcs.kaist.ac.kr/~tinuviel/download/patch-ironpython-mono-console

Seo Sanghyeon



From sjdevnull at yahoo.com  Wed Sep  6 03:13:57 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 6 Sep 2006 00:13:57 -0700
Subject: threading support in python
In-Reply-To: <7xbqptybeb.fsf@ruckus.brouhaha.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
	<hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
	<1157476298.716537.109330@h48g2000cwc.googlegroups.com>
	<7xbqptybeb.fsf@ruckus.brouhaha.com>
Message-ID: <1157526837.499442.227670@m79g2000cwm.googlegroups.com>

Paul Rubin wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > > I think it's even worse. The standard Python library offers
> > > shared memory, but not cross-process locks.
> >
> > File locks are supported by the standard library (at least on Unix,
> > I've not tried on Windows).  They work cross-process and are a normal
> > method of interprocess locking even in C code.
>
> I may be missing your point but I didn't realize you could use file
> locks to synchronize shared memory in any useful way.

You can, absolutely.  If you're sharing memory through mmap it's
usually the preferred solution; fcntl locks ranges of an open file, so
you lock exactly the portions of the mmap that you're using at a given
time.

It's not an unusual use at all, Unix programs have used file locks in
this manner for upwards of a decade--things like the Apache public
runtime use fcntl or flock for interprocess mutexes, and they're quite
efficient.  (The futexes you mentioned are a very recent Linux
innovation).



From skip at pobox.com  Sun Sep 10 00:07:16 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sat, 9 Sep 2006 23:07:16 -0500
Subject: pyExcelerator question - dates map to floats?
In-Reply-To: <17667.36008.986704.400318@montanaro.dyndns.org>
References: <17667.36008.986704.400318@montanaro.dyndns.org>
Message-ID: <17667.36724.680607.282562@montanaro.dyndns.org>


    skip> Doing a little date math I come up with a base date of
    skip> approximately (though not quite) 1900-01-01:
    ...

Reading the code in BIFFRecords.py I saw this docstring:

        This record specifies the base date for displaying date values. All
        dates are stored as count of days past this base date. In
        BIFF2-BIFF4 this record is part of the Calculation Settings Block.
        In BIFF5-BIFF8 it is stored in the Workbook Globals Substream.

        Record DATEMODE, BIFF2-BIFF8:

        Offset  Size    Contents
        0       2       0 = Base is 1899-Dec-31 (the cell = 1 represents 1900-Jan-01)
                        1 = Base is 1904-Jan-01 (the cell = 1 represents 1904-Jan-02)

Shifting my base date from 1900-01-01 to 1899-12-31 leaves me off by one.  I
take it then that "count of days past this base date" must include that
date.  It's too late for me to do any more poking around.  Does anyone know
if I might get date floats which are offset from 1904-01-01 (I think that
was the traditional Mac start-of-epoch) or are they normalized to all be
offsets from 1899-12-31?

I noticed that there are two items on the pyExcelerator to-do list.  Number
one is "documentation".

Skip


From jon+usenet at unequivocal.co.uk  Tue Sep 26 05:41:33 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 09:41:33 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>
	<mailman.581.1159200379.10491.python-list@python.org>
	<slrnehg086.7sa.jon+usenet@snowy.squish.net>
	<mailman.585.1159204290.10491.python-list@python.org>
	<slrnehg3v0.7sa.jon+usenet@snowy.squish.net>
	<mailman.636.1159253196.10491.python-list@python.org>
Message-ID: <slrnehhtdv.loa.jon+usenet@snowy.squish.net>

In article <mailman.636.1159253196.10491.python-list at python.org>, Steve Holden wrote:
>> I would have hoped that people don't treat that as a licence to be
>> obnoxious, though. I am aware of Fredrik's history, which is why I
>> was somewhat surprised and disappointed that he was being so rude
>> and unpleasant in this thread. He is not living up to his reputation
>> at all. Maybe he's having a bad day ;-)
> 
> I generally find that Fredrik's rudeness quotient is satisfactorily 
> biased towards discouraging ill-informed comment.

It's a pity he's being rude when presented with well-informed comment
then.

> As far as rudeness goes, I've found your approach to this discussion
> to be pretty obnoxious, and I'm generally know as someone with a
> high tolerance for idiotic behaviour.

Why do you say that? I have confined myself to simple logical
arguments, and been frankly very restrained when presented with
rudeness and misunderstanding from other thread participants.
In what way should I have modified my postings?


From mystilleef at gmail.com  Mon Sep 11 09:22:17 2006
From: mystilleef at gmail.com (mystilleef)
Date: 11 Sep 2006 06:22:17 -0700
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1157804310.885280.53070@b28g2000cwb.googlegroups.com>
Message-ID: <1157980937.676846.178130@q16g2000cwq.googlegroups.com>

If you have those requirements installed, it does not need anything
else.

mystilleef wrote:
> I recommend Scribes.
>
> http://scribes.sf.net
>
> Flash Demo: http://scribes.sf.net/snippets.htm
>
> GIF Demo: http://www.minds.may.ie/~dez/images/blog/scribes.html
>
> Omar wrote:
> > I'd love the perfect editor that would be:
> >
> > a) free
> >
> > b) enable me to drag and drop code snippets from a sort of browser into
> > the code
> >
> > c) can run programs right from within
> >
> > d) can edit
> >       - PYTHON
> >       - Javascript
> >       - HTML
> >       - actionscript (since I'm also learning flash)
> > 
> > e) easy to learn
> > 
> > suggestions?



From http  Sat Sep 16 03:11:26 2006
From: http (Paul Rubin)
Date: 16 Sep 2006 00:11:26 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
	<1158366884.271106.233500@i3g2000cwc.googlegroups.com>
	<1158368557.990103.222800@k70g2000cwa.googlegroups.com>
	<1158375749.810421.144120@k70g2000cwa.googlegroups.com>
	<8TLOg.2260$IA.864@newssvr11.news.prodigy.com>
Message-ID: <7xac50476p.fsf@ruckus.brouhaha.com>

James Stroud <jstroud at mbi.ucla.edu> writes:
> Actually, lambda is not necessary for event binding, but a closure (if
> I have the vocab correct), is: ...
> 
> def make_it(x):
>    def highliter(x=x):
>      print "highlight", x
>    return highliter

For that version you shouldn't need the x=x:

 def make_it(x):
    def highliter():
      print "highlight", x
    return highliter

The reason is each time you call make_it, you're creating a new scope
where x has the correct value, and highliter keeps referring to that
scope even after make_it has returned.


From yohell at ifm.liu.se  Fri Sep  1 05:52:26 2006
From: yohell at ifm.liu.se (Joel Hedlund)
Date: Fri, 01 Sep 2006 11:52:26 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <44f7fc6b$0$26046$626a54ce@news.free.fr>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<44f78549$0$11377$636a55ce@news.free.fr>
	<ed8qj8$foe$1@news.lysator.liu.se>
	<44f7fc6b$0$26046$626a54ce@news.free.fr>
Message-ID: <ed8vl3$h08$1@news.lysator.liu.se>

> And while we're at it : please avoid top-posting.

Yes, that was sloppy. Sorry.

/Joel


From vatamane at gmail.com  Fri Sep 29 05:30:22 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 29 Sep 2006 02:30:22 -0700
Subject: vector and particle effects
In-Reply-To: <1159467154.884505.131680@b28g2000cwb.googlegroups.com>
References: <1159467154.884505.131680@b28g2000cwb.googlegroups.com>
Message-ID: <1159522222.156131.230360@m73g2000cwd.googlegroups.com>

Panda3D is pretty good http://www.panda3d.org/  . It is very well
documented and it comes with many examples.

There is also pygame.



Jay wrote:
> I'd like to experiment a little bit with vector graphics in python.
> When I say 'vector graphics' I don't mean regular old svg-style.  I
> mean vector game style as in simulation of vector beam drawn graphics.
> If you still don't know what I'm talking about, see Grid Wars 2
> (http://gridwars.marune.de/) or Battlezone
> (http://en.wikipedia.org/wiki/Battlezone).
>
> Anyway, I need help choosing a module or modules to support this.
> Would pygame support this or should I try pyopengl?  Or is there a
> better module for this?
> 
> Any tutorials for the basics would be GREATLY appreciated.



From steve at holdenweb.com  Wed Sep 27 07:51:02 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 12:51:02 +0100
Subject: a query on sorting
In-Reply-To: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>
References: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>
Message-ID: <efdohj$eq0$1@sea.gmane.org>

Satya Upadhya wrote:
> Dear Friends,
> I am having a few issues with respect to sorting using python. I am using
> Python 2.4.3 Win32 (IDLE 1.1.3).
> 
>>>> x = [2,6,4]
>>>> x.sort()
>>>> x
> [2, 4, 6]
>>>> x = [2,6,4]
>>>> y = []
>>>> y = x.sort()
>>>> y
>>>> print y
> None
> 
> So the problem essentially is that i am unable to store the sorted
> elements of list x into an empty list y in a straightforward manner. I can
> get around this, of course, using the following:
>>>> x = [2,6,4]
>>>> x.sort()
> 
>  >>> x
> [2, 4, 6]
>>>> y = []
>>>> for i in x:
>         y.append(i)
> 
> 
>>>> y
> [2, 4, 6]
> 
> But this seems a little less succinct then one would expect from python.
> 
Not only that, but you've also modified the original list, which seems 
to conflict with your requirements.

> Also, consider the sorting of the indices of a sorted list. Consider the
> following code:
>>>> x = [2,6,4]
>>>> import operator
>>>> sortedindices = sorted(range(len(x)), key = x.__getitem__)
>>>> print sortedindices
> [0, 2, 1]
>>>> x.sort()
>>>> x
> [2, 4, 6]
>>>>
> 
> x (x = [2,6,4] originally) is the original list, and its indice
>  s are
> 0,1,2. If you sort x, then x becomes [2,4,6] and the the list of the
> sorted
>  indices becomes [0,2,1] since the 4 (which originally corresponds
> to index 2) has now shifted to a position corresponding to index 1 and
> likewise for element 6.
> 
> The equivalent matlab code for getting the sorted indices is much simpler:
> if x is a list (array) of values, then just write:
> 
> [y,i] = sort(x);
> and y will be a list containing the sorted elements of x and i will be a
> list containing the sorted indices.
> 
> Am i missing a trick here?
> 
> Thanking you,
> Satya
> 
  >>> sorted
<built-in function sorted>
  >>> a = [9,4,3,5,2,6,7,1,2]
  >>> b = sorted(a)
  >>> a
[9, 4, 3, 5, 2, 6, 7, 1, 2]
  >>> b
[1, 2, 2, 3, 4, 5, 6, 7, 9]
  >>>

Remember that sort() was specifically designed top operate on a list 
in-place, so it always returns None.

If you want the indexes as well you need to become a bit tricky. 
Remember that enumerate() will produced two-element tuples with the 
index value associated with the list value.

  >>> [x for x in enumerate(a)]
[(0, 9), (1, 4), (2, 3), (3, 5), (4, 2), (5, 6), (6, 7), (7, 1), (8, 2)]

But you really want the index second, so the sort works on the list 
values not the index values. Combining all this we get

  >>> sorted((x[1], x[0]) for x in enumerate(a))
[(1, 7), (2, 4), (2, 8), (3, 2), (4, 1), (5, 3), (6, 5), (7, 6), (9, 0)]

Tadaaa!

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From pellis.nospam at tampabay.rr.com  Fri Sep  8 00:38:33 2006
From: pellis.nospam at tampabay.rr.com (Patrick Ellis)
Date: Fri, 08 Sep 2006 04:38:33 GMT
Subject: Random image downloader for newsgroups (first script)
References: <5lYLg.8769$a9.2590@fe2.news.blueyonder.co.uk>
Message-ID: <dt6Mg.28013$JO5.10060@tornado.tampabay.rr.com>

Kim wrote:
> Random image downloader for specified newsgroup. Hi I'm writing a
> small script that will download random images from a specified
> newsgroup. I've imported yenc into the script but I can't open the
> image or save it. This is my first script so be gentle!
>
> Heres the script
>
>
> ####random group downloader####
> import nntplib
> import string, random
> import mimetools
> import StringIO
> import rfc822
> import sys, base64
> import os
> import email
> import errno
> import mimetypes
>
>
> SERVER = "news.server.co.uk" #Insert news server here
> GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here
>
> # connect to server
> server = nntplib.NNTP(SERVER)
>
> resp, count, first, last, name = server.group(GROUP)
>
> for i in range(10):
>    try:
>        id = random.randint(int(first), int(last))
>        resp, id, message_id, text = server.article(str(id))
>    except (nntplib.error_temp, nntplib.error_perm):
>        pass # no such message (maybe it was deleted?)
>    else:
>        break # found a message!
> else:
>    raise SystemExit
>
> text = string.join(text, "\n")
> file = StringIO.StringIO(text)
>
> msg = mimetools.Message(file)
>
> #display message information
> #print "File type", "=>", msg.gettype()
> #print "Encoding", "=>", msg.getencoding()
> #print "plist", "=>", msg.getplist()
>
> message = rfc822.Message(file)
>
> for k, v in message.items():
>    print k, "=", v
>
> file = message.fp.read()
>
> def yenc_decode(file):
>    # <i>find body</i>
>    while 1:
>        line = file.readline()
>        if not line:
>            return None
>        if line[:7] == "=ybegin":
>            break
>    # <i>extract data</i>
>    buffer = []
>    while 1:
>        line = file.readline()
>        if not line or line[:5] == "=yend":
>            break
>        if line[-2:] == "\r\n":
>            line = line[:-2]
>        elif line[-1:] in "\r\n":
>            line = line[:-1]
>        data = string.split(line, "=")
>        buffer.append(string.translate(data[0], yenc42))
>        for data in data[1:]:
>            data = string.translate(data, yenc42)
>            buffer.append(string.translate(data[0], yenc64))
>            buffer.append(data[1:])
>    return buffer
> #the following should write to a text file
> #inp = ("file","r")
> #outp = open("text.txt","w")
> #for line in file:
>    #outp.write(line)
> #print file
> #outp.close()
>

The following worked for me. It printed text and even
generated viewable images when I went to a pictures group.

I cleaned it up a little. I'm sure it can be cleaner. That's partly
because I didn't want to drift too far from your original and
partly because I don't get much Python practice.

Don't use "file" as a variable name, it overwrites the built in
file object. It likely didn't matter in this case, but would
eventually cause problems.

####random group downloader####
import nntplib
import random
import StringIO
import mimetools
import rfc822
import binascii
#import base64
#import sys
#import os
#import email
#import errno
#import mimetypes


SERVER = "news.server.co.uk" #Insert news server here
GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here

# connect to server
server = nntplib.NNTP(SERVER)

resp, count, first, last, name = server.group(GROUP)

for i in range(10):
    try:
        id = random.randint(int(first), int(last))
        resp, id, message_id, text = server.article(str(id))
    except (nntplib.error_temp, nntplib.error_perm):
        pass # no such message (maybe it was deleted?)
    else:
        break # found a message!
else:
    raise SystemExit

msgFile = StringIO.StringIO("\n".join(text))

# Display mime message information
msg = mimetools.Message(msgFile)
msgFile.seek(0)
print "File type", "=>", msg.gettype()
print "Encoding", "=>", msg.getencoding()
print "plist", "=>", msg.getplist()

# Display rfc822 message information
message = rfc822.Message(msgFile)
msgFile.seek(0)
for k, v in message.items():
    print k, "=", v

yenc42 = "".join([chr((i - 42) & 255) for i in range(256)])
yenc64 = "".join([chr((i - 64) & 255) for i in range(256)])

def yenc_decode(fileIn):
    # <i>find body</i>
    while 1:
        line = fileIn.readline()
        if not line:
            return None
        if line[:7] == "=ybegin":
            break
    # <i>extract data</i>
    buffer = []
    while 1:
        line = fileIn.readline()
        if not line or line[:5] == "=yend":
            break
        if line[-2:] == "\r\n":
            line = line[:-2]
        elif line[-1:] in "\r\n":
            line = line[:-1]
        splitData = line.split("=")
        buffer.append(splitData[0].translate(yenc42))
        for data in splitData[1:]:
            buffer.append(data[0].translate(yenc64).translate(yenc42))
            buffer.append(data[1:].translate(yenc42))
    return buffer

def uu_decode(fileIn):
    # <i>find body</i>
    while 1:
        line = fileIn.readline()
        if not line:
            return None
        if line[:6] == "begin ":
            break
    # <i>extract data</i>
    buffer = []
    while 1:
        line = fileIn.readline()
        if not line or line[:3] == "end":
            break
        buffer.append(binascii.a2b_uu(line))
    return buffer

# Write the raw message to a text file
outp = open("text.txt","w")
for line in msgFile:
    outp.write(line)
outp.close()
msgFile.seek(0)

# Find and convert a yencode or uu encode binary in the message.
image = yenc_decode(msgFile)
if image == None:
    msgFile.seek(0)
    image = uu_decode(msgFile)

# output the decoded binary data, if any
if image != None:
    outp = open("text.jpg","wb")
    outp.write("".join(image))
    outp.close()





From johnjsal at NOSPAMgmail.com  Tue Sep 19 14:36:05 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 18:36:05 GMT
Subject: help with relative imports
In-Reply-To: <mailman.286.1158690229.10491.python-list@python.org>
References: <bgWPg.3$1n3.37@news.tufts.edu>
	<mailman.286.1158690229.10491.python-list@python.org>
Message-ID: <pMWPg.5$1n3.96@news.tufts.edu>

Robert Kern wrote:

> What is ambiguous about A.B.D, A.E, and A.F.G? But if you like:

I guess maybe I was looking at it backwards. From the way it was worded, 
I thought the only information we had to use was the structure A.B.C, 
and then given a statement like:

from . import D

we just had to figure out for ourselves that this results in A.B.D, 
instead of, for example, A.C.D, or any other possibility.

But I'm still a little confused about the use of the single or double 
period. In this case:

from . import D                 # Imports A.B.D
from .. import E                # Imports A.E

why do you need a single period in the first example, and a double in 
the second, if they both are importing from A? If E is directly under A, 
couldn't you just use a single period? And since D is nested twice 
beneath A (i.e., in A, then in B), wouldn't you need two periods there 
instead?


From __peter__ at web.de  Thu Sep 21 13:42:23 2006
From: __peter__ at web.de (Peter Otten)
Date: Thu, 21 Sep 2006 19:42:23 +0200
Subject: Python 2.5 and Unicode on MacOS
References: <Michael.J.Fromberger-3982BB.12222321092006@localhost>
Message-ID: <eeuir5$2gh$01$1@news.t-online.com>

Michael J. Fromberger wrote:

> I'm not sure whether this is a bug, or a feature that I do not fully
> understand.  I would therefore appreciate some advice, if you have any,
> on the following problem:
> 
> I have just installed Python 2.5 (release) under MacOS 10.4.7 ("Tiger").
> Unfortunately, the unit test "test_unicodefile.py" (in Lib/tests/)
> exhibits a warning when invoked, as shown here:
> 
> [Lib/test] % python2.5 test_unicode_file.py
> test_directories (__main__.TestUnicodeFiles) ... ok
> test_unicode_file.py:103: UnicodeWarning: Unicode equal comparison
> failed to convert both arguments to Unicode - interpreting them as being
> unequal
>   filename1==filename2
> test_equivalent_files (__main__.TestUnicodeFiles) ... ok
> test_single_files (__main__.TestUnicodeFiles) ... ok
> 
> ----------------------------------------------------------------------
> Ran 3 tests in 0.252s
> 
> As you can see, the unit tests appear to pass, but I suspect there is a
> hidden problem, as a subsequent build of the latest version of
> BeautifulSoup now fails its unit tests, citing the same warning.  I
> can't tell whether this is a problem with the way BeautifulSoup is doing
> things, or whether there is a more general problem with Unicode support
> in the MacOS build of Python 2.5.
> 
> For reference, I have done a framework build of Python, and it seems to
> work fine for everything else I have tried.  Do you have any idea what
> might be causing this trouble?  I'd be grateful for your insights.

This Problem is not Mac-specific. Should u"?" == "?" evaluate to True, or
False, or should it raise an exception? 

I would favor always raising an exception, but the current behavior is the
result of an extensive discussion on python-dev (that I did not follow
completely) -- google for "unicode hell" and "dicts are broken". 

My personal conclusion is not to mix unicode and non-ascii str. I hope I'm
safe then...

Peter



From prudek at bvx.cz  Sat Sep 16 05:18:59 2006
From: prudek at bvx.cz (Milos Prudek)
Date: Sat, 16 Sep 2006 11:18:59 +0200
Subject: xmlrpc with Basic Auth
In-Reply-To: <450B6D87.2060606@gmail.com>
References: <200609151647.08288.prudek@bvx.cz> <450B6D87.2060606@gmail.com>
Message-ID: <200609161118.59948.prudek@bvx.cz>

> i'm currently using xmlrpclib with basic auth and i use it like this:
> from xmlrpclib import Server
> s=Server("http://user:pwd at www.example.com/rpc.php")

Perfect! Thank you.


-- 
Milos Prudek


From rogue_pedro at yahoo.com  Fri Sep  1 16:38:50 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 1 Sep 2006 13:38:50 -0700
Subject: Syntax suggestion.
In-Reply-To: <1157137823.018472.143300@m73g2000cwd.googlegroups.com>
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
Message-ID: <1157143130.533562.314460@m79g2000cwm.googlegroups.com>

samir wrote:
> Bonan tagon!
>
> George Sakkis wrote:
>
> > It's been done; it's called "IPython":
> > http://ipython.scipy.org/doc/manual/manual.html
>
> Thank you for the link! It's just what I've needed but...
>
> Roberto Bonvallet wrote :
>
> > ...so finally you get something that is exactly like any Unix shell, and
> > completely different to Python.  If you want Python to look like bash, work
> > like bash and have bash-like syntax, you should really consider using bash :)
>
> I'm fedup of typing over and over parentheses around function calls
> every time I call a single ligne function call or when it is inside an

But think of all the curly braces around code blocks that you've never
had to type!  ;-)

> "if" statement. So i thought that ommiting the parentheses and, why
> not, the commas in such cases will be a sort of beautiful/easier :)
> 
> Adiaux
> Samir



From mail at microcorp.co.za  Wed Sep 13 01:49:03 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Wed, 13 Sep 2006 07:49:03 +0200
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<mailman.333.1158060193.5279.python-list@python.org><1158078076.198865.6690@e63g2000cwd.googlegroups.com>
	<ee6oft$d93$1@sea.gmane.org>
Message-ID: <025401c6d711$d5526300$03000080@hendrik>

From: "Steve Holden" <steve at holdenweb.com> wrote:

<snip>
> These kids wi' their Oracle databases didn't know they were born. I can
> remember 'avin' to optimise programs by making sure that the next
> instruction were comin' under the heads of t' drum just as the last
> instruction were finishing.
>
> But yer tell these young folk nowadays and they just don't believe yer.
<snip>

Too true - one of my contemporaries made NCR CRAM units sing - one card
dropping, one on the drum, and one flying back up into the stack....

- Hendrik



From ldo at geek-central.gen.new_zealand  Thu Sep 28 01:09:34 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 28 Sep 2006 17:09:34 +1200
Subject: Difference between two dates in seconds
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
	<mailman.822.1159381205.10491.python-list@python.org>
	<pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>
Message-ID: <efflcj$p85$1@lust.ihug.co.nz>

In message <pan.2006.09.27.23.20.59.226695 at REMOVE.THIS.cybersource.com.au>,
Steven D'Aprano wrote:

> On Wed, 27 Sep 2006 20:16:52 +0200, Fredrik Lundh wrote:
> 
>> Claes at work wrote:
>> 
>>> Please tell me there is a simpler way than subtracting two datetimes
>>> to get a timedelta and then compute
>>> 
>>> days * number of seconds per day + seconds
>>> 
>>> from it myself??
>> 
>> why would you have to do that yourself?  why not let Python do it for
>> you?  here's the code:
>> 
>>     seconds = td.days * 86400 + td.seconds
> 
> I'm sure somebody as experienced as Fredrik doesn't need to be told why
> peppering code with magic constants like 84600 are a less than ideal
> solution...

Certainly a constant like 86400 would be better.


From rw at smsnet.pl  Mon Sep 18 15:59:14 2006
From: rw at smsnet.pl (Rob Wolfe)
Date: Mon, 18 Sep 2006 21:59:14 +0200
Subject: Cross-process dictionary/hashtable
References: <1158608672.610841.271530@b28g2000cwb.googlegroups.com>
Message-ID: <87k641ymi5.fsf@smsnet.pl>

"Sandra-24" <sandravandale at yahoo.com> writes:

> A dictionary that can be shared across processes without being
> marshaled?
>
> Is there such a thing already for python?

Check this out:

http://poshmodule.sourceforge.net/

-- 
HTH,
Rob


From pavlovevidence at gmail.com  Sun Sep 10 22:37:17 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 10 Sep 2006 19:37:17 -0700
Subject: Refactoring Dilemma
In-Reply-To: <1157938079.739333.20890@d34g2000cwd.googlegroups.com>
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
	<1157928606.110323.123080@i3g2000cwc.googlegroups.com>
	<1157938079.739333.20890@d34g2000cwd.googlegroups.com>
Message-ID: <1157942237.032572.32200@p79g2000cwp.googlegroups.com>


George Sakkis wrote:
> Carl Banks wrote:
> > I don't see any major problem with it.  In fact, I think it's a very
> > good idea to do this, rather than use global statements, when using
> > module as a singleton class.
> >
> > I recently made the same transition myself, though I solved it a bit
> > differently.  I used a decorator to pass the module as the first
> > argument (actually it passes a proxy to module's global dict, since the
> > module itself isn't accesible from the function object).
> >
> > def modmethod(func):
> >     class modproxy(object):
> >         __getattribute__ = func.func_globals.__getitem__
> >         __setattr__ = func.func_globals.__setitem__
> >     self = modproxy()
> >     def call_with_module(*args,**kwargs):
> >         return func(self,*args,**kwargs)
> >     call_with_module.func_name = func.func_name
> >     return call_with_module
> >
> > @modmethod
> > def MyRoutine(self):
> >     self.var = 1
> >
> > MyRoutine()
> > print var
>
> This looks quite hackish, both the implementation and the usage;

Once again, the function MyRoutine is intended to be called from
another module.  The usage I have here is just an example demonstrating
that var is in the module's dict.  Please keep this in mind when
criticizing usage.  The intended usage would be something like this
(from another module):

from xxx import yyy
yyy.MyRoutine()

As far as the caller is concerned, yyy could be a module using globals,
a module with this "hack", or a class instance, or something else.  It
doesn't matter; usage is the same in all three cases.

As for the implementation...

> most
> people would get confused when they didn't find var's assignment at
> global scope. I prefer the the simple global statements if they aren't
> that many, otherwise the assignment of the module to self is also fine.

For ordinary modules that might have one or two serial number counters
or debug flags or whatnot, I agree.  For modules that have lots of
state and act more like class instances than modules, the massive
amounts of globals are ugly and error prone.  In that case you should
either use a regular class, or tolerate the "hack"; don't use a bunch
of globals.

I think a simple comment at the top could take care of any confusion
about what's happening.  Since it mimics how a class works, it won't be
anything completely new.

YMMV.

Carl Banks



From paul.lafollette at gmail.com  Sat Sep 23 19:58:14 2006
From: paul.lafollette at gmail.com (paul.lafollette at gmail.com)
Date: 23 Sep 2006 16:58:14 -0700
Subject: assignment hook
Message-ID: <1159055894.620401.181760@m7g2000cwm.googlegroups.com>

Kind people,
Is there any way one can, within Python, intercept the act of
assignment.  For instance, suppose that I was obsessed with
FORTRAN II, and decided that I wanted to print a warning,
or raise an exception any time someone assigned an int to a
variable whose name did not start with i,j,k,l,m, or n.

If assigment were an operator, I could, perhaps,  subclass
something and override the (non-existant)__assign__ method
to find the name of the variable and the type of the assigned
object, but it ain't so I can't.

My guess is that it is simply impossible, but if it IS possible,
I would love to know how to do it.  Thank you for your time
and expertise.

Paul

---------------------------------------
Your task it is, amid confusion, rush, and noise, to grasp the lasting,
calm, and  meaningful, and finding it anew, to hold and treasure it.
-Paul Hindemith-

Paul S. LaFollette, Jr.
Temple University
CIS Department
paul.lafollette at temple.edu

+1 215 204 6822
              
www.cis.temple.edu/~lafollet



From fabiofz at gmail.com  Tue Sep 26 15:56:33 2006
From: fabiofz at gmail.com (Fabio Zadrozny)
Date: Tue, 26 Sep 2006 16:56:33 -0300
Subject: Pydev 1.2.4 Released
Message-ID: <cfb578b20609261256x4758b949n9badeea9e74881ea@mail.gmail.com>

Pydev and Pydev Extensions 1.2.4 have been released

Details on Pydev Extensions: http://www.fabioz.com/pydev
Details on Pydev: http://pydev.sf.net
Details on its development: http://pydev.blogspot.com

Release Highlights in Pydev Extensions:
-----------------------------------------------------------------

* Code analysis: analysis on imported modules do no longer give you errors
on
    * classes that have __getattribute__ or __getattr__ overriden
    * assigns that are initially None
    * assigns to a function call and not a class definition

* Completions for parameters in a context-insensitive way, looking for all
the methods/attributes declared in classes available to the project (after 3
chars)

Release Highlights in Pydev:
----------------------------------------------

* Completions for parameters based on the tokens that were defined for it in
a given context
* Removed the default PyLint options, because its command-line interface
changed (that was crashing PyLint in newer versions)
* Changed the grammar so that 'yield' is correctly parsed as an expression
* Giving better error message when external file is opened without any
interpreter selected
* Icons for the builtins gotten on large libraries (such as wx -- it was
optimized not to do that before)
* Adding jars relative to the project now works correctly
* Patched (Kovan): The debugger is now able to get the variables in a
context when handling negative payloads


What is PyDev?
---------------------------

PyDev is a plugin that enables users to use Eclipse for Python and Jython
development -- making Eclipse a first class Python IDE -- It comes with many
goodies such as code completion, syntax highlighting, syntax analysis,
refactor, debug and many others.


Cheers,

-- 
Fabio Zadrozny
------------------------------------------------------
Software Developer

ESSS - Engineering Simulation and Scientific Software
http://www.esss.com.br

Pydev Extensions
http://www.fabioz.com/pydev

Pydev - Python Development Enviroment for Eclipse
http://pydev.sf.net
http://pydev.blogspot.com
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From gnewsg at gmail.com  Wed Sep 13 04:59:11 2006
From: gnewsg at gmail.com (gnewsg at gmail.com)
Date: 13 Sep 2006 01:59:11 -0700
Subject: How to write UNIX daemons in Python?
Message-ID: <1158137951.766580.321020@e3g2000cwe.googlegroups.com>

Hi all. I've just finished to write an FTP daemon in Python.
To do things well I'd like to write an 'insteller' to permit the end
user to 'deeply' install the package inside the system. In details I
would like that installer is able to do the following operations:

- copy ftpd.py in /usr/bin.
- depending on the system, it should be able to determinate where
service startup directory is located (for example /etc/init.d)  and
copy a script able to automatically run /usr/ftpd.py at startup.
- optionally install a manual callable with "man ftpd".
- many other operations about the installation of a package.

What should I use to do something like that? Do I have to use
distutils? Do I have to use third party packages? Do I have to write a
"setup.py" and solve the problem manually?
This last solution is problematic becouse, for (dumb) example, Debian
wants executable/programs to be located in /usr/bin while Fedora uses
another path (for example /usr/sbin).

Another question: what about .deb, .rpm, [...] packages?
Does it possible to use them with Python programs?
Resolving third party dependancies by using them could be a nice thing.


Best regards



From deets at nospam.web.de  Mon Sep  4 09:53:26 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 04 Sep 2006 15:53:26 +0200
Subject: methods and functions, instances and classes
References: <y%VKg.3084$%k5.2240@trnddc08>
Message-ID: <4m2pemF487vvU1@uni-berlin.de>

David Isaac wrote:

> When I create an instance of a class,
> are the class's functions *copied* to create the methods?
> Or are method calls actually calls of the class's functions?

On the class functions. You can make every instance have it's own methods,
though - but only explicitly.

Diez



From nemesis at nowhere.invalid  Sun Sep 17 03:35:11 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Sun, 17 Sep 2006 07:35:11 GMT
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<599og29q5ano6pn3s0fi13533h86j747kk@4ax.com>
	<20060916175424.2237.2442.XPN@orion.homeinvalid>
	<rthog21kjqrg1lq5c0ldje2m62gpjkcs2a@4ax.com>
Message-ID: <20060917073508.2241.46099.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Franz Steinh?usler" scriveva:

>>> For the find, I personally would prefer to jump default to "body",
>>> but this is of course a matter of taste.
>>Do you mean you would like the focus to be set on the "body" search
>>field?
> Yes, that I meant.

OK .. then it's a matter of taste ;-)

>>I don't know how "CTRL+break" interact with XPN, it's better to close it
>>with its exit function "CTRL+E".
>
> Because it hanged. The dos prompt didn't return, so I have to 
> type ctrl-c or ctrl-break to get the prompt back.

Ah, maybe it was still purging the groups, did you have groups with lots
of articles?


-- 
"Di Vaio fa fuori Bonomi e spara". (Pierpaolo Cattozzi)
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From ironfroggy at gmail.com  Mon Sep 18 20:27:47 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 20:27:47 -0400
Subject: Code Golf Challenge : 1,000 Digits Of Pi
In-Reply-To: <1158622400.686144.246760@e3g2000cwe.googlegroups.com>
References: <450EB2B7.1070407@carldr.com>
	<mailman.242.1158616735.10491.python-list@python.org>
	<1158622400.686144.246760@e3g2000cwe.googlegroups.com>
Message-ID: <76fd5acf0609181727n1b5ce2f1v130fab24d2708b75@mail.gmail.com>

On 18 Sep 2006 16:33:20 -0700, George Sakkis <george.sakkis at gmail.com> wrote:
> Calvin Spealman wrote:
>
> > Just once, I would like to see a programming contest that was judged
> > on the quality of your code, not the number of bytes you managed to
> > incomprehensively hack it down to.
>
> Unfortunately, quality is not as easy to judge as number of bytes. Such
> contest would be as crazy an idea as a beauty contest! Oh, wait...
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

Peer interest could be raised enough to get a voting community to
perform the judging. Now, it would not be exact, and some people might
complain about the results, but those women cry when they loose and
just come back to try again. I think we can handle this at least as
well.


From ilias at lazaridis.com  Tue Sep 19 01:45:18 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 18 Sep 2006 22:45:18 -0700
Subject: EyeDB Object Database (ODBMS) - Python wrapper
In-Reply-To: <1157819934.666486.280360@i42g2000cwa.googlegroups.com>
References: <1157819934.666486.280360@i42g2000cwa.googlegroups.com>
Message-ID: <1158644718.354272.309680@e3g2000cwe.googlegroups.com>

GinTon wrote:
> EyeDB is a free ODBMS based on the ODMG 3 specification with
> programming interfaces for C++ and Java. It is very powerfull, mature,
> safe and stable. In fact, it was developed in 1992 for the Genome View
> project althought rewritten in 1994, and has been used in a lot of
> bioinformatics projects
>
> http://www.eyedb.org/

I've added this very interesting database to the selection case:

http://case.lazaridis.com/wiki/Persist

> Python does not have any programming interface to ODBMS and I believe
> that it would be very interesting that the Python community could
> access to a great object database like this one.
>
> If somebody is interested could to using SIP as Python wrapper. PyQT4
> bindings were made with SIP
> http://www.riverbankcomputing.co.uk/sip/
>
> These are the conclusions of several Python wrappers that shows that
> SIP generates the fastest wrappers:
> http://people.web.psi.ch/geus/talks/europython2004_geus.pdf
>
> *  Manual wrapping is still fastest and most versatile
> *  SIP, Boost and Babel generate native extension modules with low
> overhead
> *  SWIG-generated modules rely on pure Python wrapper module and
> introduce a large overhead
> *  Wrapper tool highlights:
>      - SIP generates the fastest wrappers
>      - SWIG is mature and well documented
>      - Boost.Python most elegant integration of C++ and Python
>      - Babel supports languages as both target and source

I will take this information in account when selecting a binding:

http://case.lazaridis.com/wiki/Binding

Possibly more important that speed is the simplicity, e.g. how simple
is it to produce the wrapper and how simple is it to update the
wrapper.

> If you want to know more about ODBMS here you have some interesting
> links:
>
> http://en.wikipedia.org/wiki/Object_database
> http://www.dacs.dtic.mil/techs/oodbms2/oodbms-toc.shtml
> http://www.kuro5hin.org/?op=displaystory;sid=2001/5/3/32853/11281
> http://www.odbms.org/introduction_whenODBMS.html
> http://archive.devx.com/dbzone/articles/sf0801/sf0801-1.asp



From aravindmail007 at yahoo.co.in  Fri Sep  8 05:16:47 2006
From: aravindmail007 at yahoo.co.in (Aravind)
Date: Fri, 8 Sep 2006 14:46:47 +0530
Subject: mobile phone app
Message-ID: <edrc9j$u9f$1@news4.fe.internet.bosch.com>

hi,

Can anyone tell me if python can be used for developing mobile phone apps as
Java ? If yes, any comparisons ? Also pls tell me where i can get the tools
and tutorials for the same...

Thanks in advance...




From rcs at bgoark.no  Wed Sep 27 17:33:25 2006
From: rcs at bgoark.no (baalbek)
Date: Wed, 27 Sep 2006 23:33:25 +0200
Subject: Survival of the fittest
In-Reply-To: <qjkSg.6439$vJ2.6155@newssvr12.news.prodigy.com>
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
	<qjkSg.6439$vJ2.6155@newssvr12.news.prodigy.com>
Message-ID: <451aee0c$0$8006$c83e3ef6@nn1-read.tele2.net>

James Stroud wrote:
> baalbek wrote:
>> Why? The language is just so well designed (I miss some of Ruby's 
>> features, but then, nothing is perfect)
> 
> Out of curiosity, what are these features that ruby has that python 
> lacks. 

Code blocks (closures), that are more advanced than Python's Lambdas, 
and the use of yield.

Also, you can pass code blocks to every method without any special 
syntax for the method ( it is up to the method of checking whether there 
is a code block being passed ).

Some syntactic sugar (list.each { |i| puts i }, etc).

A very simple syntax for reading/writing properties (attr_accessor 
:prop1 automatically creates set/get methods for the property prop1).

Also, a standard way of method names that automatically enforce rules, f.ex:

def hascolor?
    ---
end

The question mark automatically enforces the method to return boolean.

Or:

def prop1=
   ---
end

automatically assigns to the property @prop1 whatever is evaluated in 
the method.

And some other things I can't recall at the moment.


Baalbek


From horpner at yahoo.com  Fri Sep  1 14:55:46 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 1 Sep 2006 20:55:46 +0200
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
Message-ID: <slrnefh0gl.1eo.horpner@FIAD06.norwich.edu>

On 2006-09-01, jwaixs <jwaixs at gmail.com> wrote:
> Hello,
>
> How can I disgrate (probably not a good word for it) a list? For
> example:
>
> a = [1,2]
> b = 3
> c = [a] + [b]     # which makes [[1,2],3]
>
> Then how can I change c ([[1,2],3]) into [1,2,3]? I have a
> simple function for this:

You might try:

  c = a + [b]

instead, to avoid the issue.

> But this function isn't really doing it in the "python-way".
> Doesn't have python an obscure function or buildin to do this?

I don't know if the following is the Python way, but I think it's
cute:

def flatten(x):
    """Flatten list x, in place."""    
    i = 0
    while i < len(x):
        if isinstance(x[i], list):
            x[i:i+1] = x[i]
        i = i+1

-- 
Neil Cerutti
In my prime I could have handled Michael Jordan.  Of course, he
would be only 12 years old. --Jerry Sloan


From herrekberg at users.sf.net  Sat Sep 16 17:01:20 2006
From: herrekberg at users.sf.net (Pontus Ekberg)
Date: Sat, 16 Sep 2006 23:01:20 +0200
Subject: How to draw a rectangle with gradient?
References: <1158420106.678241.255820@d34g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.16.21.01.15.38307@users.sf.net>

Daniel Mark wrote:

> Hello all:
> 
> I am using PIL to draw a rectangle filled with color blue.
> 
> Is there anyway I could set the fill pattern so that the drawn
> rectangle could be filled with
> gradient blue?
> 
> 
> Thank you
> -Daniel

I don't think there is a built-in gradient function, but you could do
something like this:

>>> import Image
>>> import ImageDraw
>>> im = Image.new("RGB", (100, 100))
>>> draw = ImageDraw.Draw(im)
>>> for l in xrange(100):
...     colour = (0, 0, 255 * l / 100)
...     draw.line((0, l, 100, l), fill=colour)
...
>>> im.show()

You have to adjust for the size and colours you want of course, and change
the loop so that the gradient is in the right direction.

// Pontus



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From michele.simionato at gmail.com  Thu Sep 28 03:19:08 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 28 Sep 2006 00:19:08 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <mailman.843.1159401499.10491.python-list@python.org>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159367692.197632.162250@i3g2000cwc.googlegroups.com>
	<mailman.843.1159401499.10491.python-list@python.org>
Message-ID: <1159427948.839628.73040@m7g2000cwm.googlegroups.com>

Ben Finney wrote:
> I submit that a programmer who knows *only* one programming language
> can never be an expert in that language; it is only exposure to
> multiple tools and ways of programming that can grow a one-trick pony
> into an expert.

Well, it all depends on the definition of "expert". Python is written
in C, so if  by
expert of Python you mean somebody who knows its internal working, its
is clear
that that person must know C. However, even knowing Python only gives
you
a lot of "multiple tools and ways of programming", much more than
knowing
Java or Visual Basic. That was my point.

Also, I believe that a person who knows Python has no reason to learn
Java or Visual Basic (except for pragmatic purposes). After Python I
learned Scheme and if I had time I would
give a look at Haskell, or some other different language. BTW I decided
not to learn
Ruby it is not really different from Python in terms of learning "new
ways of programming".

 Michele Simionato



From sandravandale at yahoo.com  Mon Sep  4 22:24:18 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 4 Sep 2006 19:24:18 -0700
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <1157423058.086574.178190@e3g2000cwe.googlegroups.com>


alf wrote:
> Hi,
>
> I have a reference to certain objects. What is the most pythonic way to
> test for valid reference:
>
> 	if obj:
>
> 	if None!=obs:
>
> 	if obj is not None:

I like this way the most. I used timeit to benchmark this against the
first one, expecting it to be faster (the first is a general false
test, the last should just be comparing pointers) but it's slower.
Still I don't expect that to ever matter, so I use it wherever I wish
to test for None, it reads the best of all of them.

-Sandra



From deets at nospam.web.de  Sun Sep 24 17:09:18 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 24 Sep 2006 23:09:18 +0200
Subject: IDLE - Customizing output format
In-Reply-To: <1159130442.913233.276910@k70g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
Message-ID: <4noafuFbdc2uU1@uni-berlin.de>

>> And I am wondering at your continual surprise when the rest of the world
>> fails to share your perceptions. Doesn't this carry *any* information?
> 
> not the rest of the world, but the rest of the python community.
> 
> That's a big difference.
> 
> So it looks that I have to code to change the output format.
> 
> Reminds me 'good old days'.

Gosh. Shocking. A programmer is supposed to program if he wants a 
program to behave differently. When the heck has this world mutated from 
a place where uttering nonsense made it immediately happen, as if by magic?

I can recall two times that has been the case before:

  - paradise. Ended presumably 6000 years ago, according to your local 
intelligent designer outlet.

  - dot-com era, unfortunately only for funding ideas, not so much 
developing or even successfully deploying them. Ended 2001.

Obviously historians have to consider a third period: the golden times 
of Illias wishful thinking reign, a collectively unnoticed time which 
only records could be found if brain scanning was more developed in just 
one brain in the world. Yours.

Diez


From frank at chagford.com  Tue Sep 26 10:42:44 2006
From: frank at chagford.com (Frank Millman)
Date: 26 Sep 2006 07:42:44 -0700
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <mailman.688.1159281249.10491.python-list@python.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efakif$idf$1@lust.ihug.co.nz>
	<1159279813.569837.206530@e3g2000cwe.googlegroups.com>
	<mailman.688.1159281249.10491.python-list@python.org>
Message-ID: <1159281764.100207.285590@i42g2000cwa.googlegroups.com>


Fredrik Lundh wrote:
> Frank Millman wrote:
>
> > I am reminded of a spoof Latin motto from the days of my youth -
> >
> >    NIL ILLEGITIMO CARBORUNDUM
>
> isn't that usually written
>
>     Illegitimi non carborundum
>
> ?
>
> or is that just due to differences between british latin and american latin ?
> 
> </F>

or my bad memory - my youth was a long time ago :-)

Frank



From randhol+valid_for_reply_from_news at pvv.org  Tue Sep 19 02:22:39 2006
From: randhol+valid_for_reply_from_news at pvv.org (Preben Randhol)
Date: Tue, 19 Sep 2006 08:22:39 +0200
Subject: How to find number of characters in a unicode string?
References: <20060918221814.08625ea2.randhol+valid_for_reply_from_news@pvv.org>
	<pan.2006.09.18.20.29.20.510034@gmx.net>
Message-ID: <20060919082239.b16bb1cf.randhol+valid_for_reply_from_news@pvv.org>

On Mon, 18 Sep 2006 22:29:20 +0200
Marc 'BlackJack' Rintsch <bj_666 at gmx.net> wrote:

> Yes and you already seem to know the answer:  Decode the byte string
> and use `len()` on the unicode string.

.decode("utf-8") did the trick. Thanks!

Preben


From kay.schluehr at gmx.net  Wed Sep 13 10:12:30 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 13 Sep 2006 07:12:30 -0700
Subject: best small database?
In-Reply-To: <1158143048.133054.155630@h48g2000cwc.googlegroups.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<1158003527.979849.240080@m73g2000cwd.googlegroups.com>
	<1158089355.730894.51330@m73g2000cwd.googlegroups.com>
	<1158143048.133054.155630@h48g2000cwc.googlegroups.com>
Message-ID: <1158156750.823956.302250@e3g2000cwe.googlegroups.com>


Pierre Quentel wrote:
> Buzhug (like Karrigell and Strakell) is a Breton word ; Breton is the
> language spoken in Brittany, the westernmost part of France. Less and
> less spoken, actually, but I do, like all my ancestors. It is a close
> cousin of Welsh, and has common roots with Irish and Gaelic
>
> Buzhug means "earthworm", the big long brown worms that you find when
> you dig ; the shape is the same as a python, only smaller and less
> dangerous...
>
> You pronounce it "buzuk", with the French "u" or German "?"
>
> Karrigell means "cart" and strakell, any sort of engine that you don't
> know its name. Bot rhyme with "hell" ; a and r like in French, g like
> in goat
> 
> Now you know 3 words of Breton !
> 
> Regards,
> Pierre

Thanks !!!



From fredrik at pythonware.com  Tue Sep 26 06:00:07 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 12:00:07 +0200
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159263438.026179.145120@b28g2000cwb.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>	<mailman.643.1159255733.10491.python-list@python.org>
	<1159263438.026179.145120@b28g2000cwb.googlegroups.com>
Message-ID: <efatn6$tsv$1@sea.gmane.org>

altemurbugra at gmail.com wrote:

> GOOGLE IS NOT OUR SUBJECT ANY MORE.
> 
> MY GOAL IS NOT MAKING SEARCH ON GOOGLE:
> MY GOAL IS MAKING A SEARCH ON
> www.onelook.com, for example

this is usenet; you don't "own" the threads you start.  if there's a 
subthread that you don't find relevant to your original question, just 
ignore it.

</F>



From jgodoy at gmail.com  Tue Sep 12 08:56:05 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Tue, 12 Sep 2006 09:56:05 -0300
Subject: "filtered view" upon lists?
References: <mailman.337.1158062350.5279.python-list@python.org>
Message-ID: <878xkpb5wa.fsf@gmail.com>

Wildemar Wildenburger <wildemar at freakmail.de> writes:

> I don't know how else to call what I'm currently implementing: An object that
> behaves like a list but doesn't store it's own items but rather pulls them
> from a larger list (if they match a certain criterion).
> Changes to the filter are instantly reflected in the underlying list.
> Clear enough?

It looks like you're implementing a callable to me.  This is a method that
returns results based on some input -- here your original list and filter.

Then you'll use this method wherever you need that filtered list.

> Ok, so I figured that this is generic enough to be found in some standard
> module already (I've had this often enough: Painfully implementing s/th and
> then finding it in the libs some weeks later.).

I don't believe it is generic.  Nobody knows your data specs or filtering
needs. 

> Any pointers?

Use of list comprehension might make it easier to code this:


def myCallable(my_list, filter):
    filtered_list = [(item) for item in my_list if filter(item)]
    return filtered_list


Example of full code:

>>> test_list = range(10)
>>> filter = lambda x: not x%2
>>> def myCallable(list, filter):
...     filtered_list = [(item) for item in list if filter(item)]
...     return filtered_list
... 
>>> myCallable(test_list, filter)
[0, 2, 4, 6, 8]
>>> for item in myCallable(test_list, filter):
...     print "See?  I'm", item
... 
See?  I'm 0
See?  I'm 2
See?  I'm 4
See?  I'm 6
See?  I'm 8
>>> 


-- 
Jorge Godoy      <jgodoy at gmail.com>


From horpner at yahoo.com  Tue Sep 12 11:37:09 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 12 Sep 2006 17:37:09 +0200
Subject: Code to add docstrings to classes
References: <slrnegdcem.epp.matt@mwilson.umlcoop.net>
	<slrnegdfne.13s.horpner@FIAD06.norwich.edu>
	<slrnegdif8.fbk.matt@mwilson.umlcoop.net>
Message-ID: <slrnegdl1f.r4.horpner@FIAD06.norwich.edu>

On 2006-09-12, Matthew Wilson <matt at tplus1.com> wrote:
> On Tue 12 Sep 2006 10:06:27 AM EDT, Neil Cerutti wrote:
>> Writing a thin wrapper around the dictionary might be
>> beneficial, and would also furnish a place for the docstrings. 
>
> I wrote a function that hopefully does just that.  I'm not very
> savvy at doing this class-factory stuff, so any advice would be
> welcome.

I should have chosen my words more carefully. I meant to suggest
writing small interfaces for your dictionaries. This sort of
trick is often used in Scheme, where lists are used to represent
many different data types. Designing and writing a good interface
makes the code much easier to understand.

Here's a simple-minded example of a dictionary of identifiers for
use in an interpreter, which nevertheless demonstrates the
advantages of the technique.

class IdentError():
  pass

idents = {}

def new_ident(id, initial_value=None):
  """
  Create a new identifier, id, (possibly with an initial_value)
  and add it to the table of identifiers.  Raises IdentError if
  the identifier already exists.


  """
  if id in idents:
    raise IdentError
  else:
    idents[id] = initial_value
    
def ident_value(id):
  """
  Return the current value of id. Raises IdentError if the
  identifier is undefined.

  """
  if key not in idents:
    raise IdentError
  else:
    return idents[id]

Then the rest of the code uses this tiny interface.

-- 
Neil Cerutti
If only faces could talk. --Pat Summerall


From kw at kevin-walzer.com  Mon Sep  4 10:14:07 2006
From: kw at kevin-walzer.com (Kevin Walzer)
Date: Mon, 04 Sep 2006 10:14:07 -0400
Subject: Setting custom folder icon in OS X?
In-Reply-To: <1157307560.604101.27960@p79g2000cwp.googlegroups.com>
References: <1157307560.604101.27960@p79g2000cwp.googlegroups.com>
Message-ID: <44FC34AF.7050107@kevin-walzer.com>

Jet Jaguar wrote:
> I'm trying to find a way to set a custom folder icon in OS X.  I
> thought that Applescript would be able to do it, but apparently it
> can't.  Is there anything in the Macintosh libraries of Python that
> will allow me to take an image file (e.g., jpeg, png, tiff, etc.) and
> set it as the icon for a folder?
> 
> Kevin D. Smith
> 
There might be a way to do this via PyObjC (the Python-Objective C
bridge), which provides access to the Mac's Cocoa frameworks.

-- 
Kevin Walzer
Poetic Code
http://www.kevin-walzer.com


From sandravandale at yahoo.com  Mon Sep  4 12:39:32 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 4 Sep 2006 09:39:32 -0700
Subject: Prevent self being passed to a function stored as a member variable?
Message-ID: <1157387972.227609.326880@e3g2000cwe.googlegroups.com>

How can you prevent self from being passed to a function stored as a
member variable?

class Foo(object):
   def __init__(self, callback):
      self.func = callback

f =Foo(lambda x: x)
f.func(1) # TypeError, func expects 1 argument, recieved 2

I thought maybe you could do this:

class Foo(object):
   def __init__(self, callback):
      self.func = staticmethod(callback)  # Error, staticmethod not
callable

Somebody (maybe everybody other than myself) here must know?

Thanks,
-Sandra



From michele.simionato at gmail.com  Thu Sep 14 05:57:40 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 14 Sep 2006 02:57:40 -0700
Subject: descriptor problems
In-Reply-To: <45091f01$0$7317$5a62ac22@per-qv1-newsreader-01.iinet.net.au>
References: <45091f01$0$7317$5a62ac22@per-qv1-newsreader-01.iinet.net.au>
Message-ID: <1158227860.076557.61610@b28g2000cwb.googlegroups.com>

Gary Stephenson wrote:
> # but I need to be able to update the value through the class
> # how do I do it?
> A.cls2 = 4     # whoops - we just overwrote the descriptor with an integer
>
> A.cls2.__set__(None,4)     # AttributeError: 'int' object has no attribute
> '__set__'

You need to define the descriptor at the metaclass level too.

               Michele Simionato



From sanxiyn at gmail.com  Fri Sep 29 07:52:40 2006
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Fri, 29 Sep 2006 20:52:40 +0900
Subject: [ANN] IronPython Community Edition 1.0r2
Message-ID: <5b0248170609290452i7f86dfe7na49cebb55da85eba@mail.gmail.com>

This is the second release of IronPython Community Edition (IPCE),
1.0 revision 2, based on IronPython 1.0.

Get it here:
http://sparcs.kaist.ac.kr/~tinuviel/download/IPCE-1.0r2.zip

Binary is built with Mono 1.1.17.1.

BIG WARNING: it won't work with Mono versions below 1.1.17. Please
don't mail me or IronPython mailing list before checking your Mono version!

IPCE has a new home on SourceForge:
http://fepy.sourceforge.net/

And here's the license and the summary of applied patches:
http://fepy.sourceforge.net/license.html
http://fepy.sourceforge.net/patches.html

Changes in this revision:

* Includes the Python standard library from CPython 2.4.3.
(Not everything is included -- that would be pointless. Those I tested and
work reasonably are included.)

* Includes following CPython-compatible wrappers for .NET library:
md5, pyexpat, select, sha, socket, ssl, unicodedata.

* Includes DB-API wrapper for ADO.NET.

* Includes BeautifulSoup and ElementTree for you to test. (Both work
great with IronPython!)

* Does not include Doc, Src, Tutorial from the original IronPython release.
You know where to get them... Reduces size by about half.

* Extracts to IPCE-1.0r2. (The first revision extracted to IronPython-1.0
and it could overwrite existing installation. Thanks to Anthony Baxter
for pointing this out.)

-- 
Seo Sanghyeon


From gagsl-py at yahoo.com.ar  Thu Sep 28 00:35:32 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 01:35:32 -0300
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159375238.173590.187840@e3g2000cwe.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>
	<mailman.755.1159316054.10491.python-list@python.org>
	<1159375238.173590.187840@e3g2000cwe.googlegroups.com>
Message-ID: <7.0.1.0.0.20060928011614.038ccc70@yahoo.com.ar>

At Wednesday 27/9/2006 13:40, p.lavarre at ieee.org wrote:

> > That means that NULL pointers are considered False in a boolean
> > expression (and you could assume that non-NULL pointers are True, as
> > any other object in general),
>
>I see this now that you show the clueless newbie me, yes thank you.
>Except now by showing me here we have provoked the authority Thomas
>Heller to say:
>
> > > > Generally pointer instances have a False boolean value, so
> > > > 'if pv: ....'
> > > > should work.  Except for c_void_p, c_char_p and c_wchar_p instances.
>
>That English I do not understand.  "Except" how?

Uh? That's wrong. Where did you find that? Should read "Generally 
NULL pointer instances have..."
In short, whenever you see, in C:

if (ptr1) { whatever }
if (ptr2 != NULL) { whatever }
if (ptr3 == NULL) { whatever }

that goes into python:

if ptr1: ...
if ptr2: ...
if not ptr3: ...

>Oh that's exactly how my newbie innocence led me astray.

Don't apologize, it's not easy to learn Python *and* learn to link an 
external library at the same time...



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From p.lavarre at ieee.org  Wed Sep 27 12:40:38 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 27 Sep 2006 09:40:38 -0700
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <mailman.755.1159316054.10491.python-list@python.org>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>
	<mailman.755.1159316054.10491.python-list@python.org>
Message-ID: <1159375238.173590.187840@e3g2000cwe.googlegroups.com>

> It says:
>
> NULL pointers have a False boolean value:
>  >>> null_ptr = POINTER(c_int)()
>  >>> print bool(null_ptr)
> False

Yes.

> That means that NULL pointers are considered False in a boolean
> expression (and you could assume that non-NULL pointers are True, as
> any other object in general),

I see this now that you show the clueless newbie me, yes thank you.
Except now by showing me here we have provoked the authority Thomas
Heller to say:

> > > Generally pointer instances have a False boolean value, so
> > > 'if pv: ....'
> > > should work.  Except for c_void_p, c_char_p and c_wchar_p instances.

That English I do not understand.  "Except" how?

> so you can test a NULL pointer with a
> simple "if ptr: whatever"

Apparently, yes, except for the "except" above.

> --- cut ---
> from ctypes import *
> null_ptr = POINTER(c_int)()
> x=c_int(1234)
> other_ptr = pointer(x)
>
> if null_ptr: print "null_ptr is not NULL"
> else: print "null_ptr is NULL"
>
> if other_ptr: print "other_ptr is not NULL"
> else: print "other_ptr is NULL"
> --- cut ---

Yes.

> It's really the same as bool([])==False, bool(any_non_empty_list)==True:
>
> L = [1,2,3]
> while L:
>    print L.pop()
>
> You don't say:
> while bool(L)==True:
>
> (do you?)

Oh that's exactly how my newbie innocence led me astray.

Rather than working first to translate the C 'if pv', I worked first to
translate the C '(pv != NULL)',  and then I got lost (and as yet still
am lost) in newbie astonishment over some nulls feeling more like None
than others.



From exarkun at divmod.com  Sun Sep  3 13:44:18 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Sun, 3 Sep 2006 13:44:18 -0400
Subject: str.isspace()
In-Reply-To: <1157300448.956962.24510@i42g2000cwa.googlegroups.com>
Message-ID: <20060903174418.1717.403329086.divmod.quotient.38047@ohm>

On 3 Sep 2006 09:20:49 -0700, bearophilehugs at lycos.com wrote:
>Are you using the str.isspace() method? I don't use it, so if most
>people don't uses it, then it may be removed from Py 3.0.
>
>I usually need to know if a string contains some non-spaces (not space
>class chars). To do it I use something like:
>
>if aline.strip(): ...
>
>If you really need str.isspace() you may use (but so far I have never
>had to do this):
>
>if txt and not txt.strip(): ...
>
>Bye,
>bearophile
>

Great idea.

By the way, are you using division?  I don't use it, so if most people
don't use it, then it may be removed from Py 3.0.

If you really need division, you may use:

  x * (y ** -1)

Bye,
Jean-Paul


From ldo at geek-central.gen.new_zealand  Wed Sep 27 17:35:36 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 28 Sep 2006 09:35:36 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz> <ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
	<Xns984B793317A15duncanbooth@127.0.0.1>
	<efdnqd$adv$1@lust.ihug.co.nz>
	<Xns984B8482155F6duncanbooth@127.0.0.1>
Message-ID: <efeqpd$8vh$1@lust.ihug.co.nz>

In message <Xns984B8482155F6duncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> 
>> I'm assuming you mean, how would you get from a Python expression to a
>> MySQL clause that looks like
>> 
>>     name like "%\\\\%%"
>> 
>> (wildcard % followed by literal backslash \\ followed by literal
>> percent \% followed by wildcard %.) That's easy:
>> 
>>     EscapeSQLWild(r"\%") => r"\\%"
>>     SQLString(r"\\%") => r'"\\\\%"'
>> 
>> So the Python expression
>> 
>>     "name like %s" % SQLString("%" + EscapeSQLWild(r"\%") + "%")
>> 
>> gives you what you want.
>> 
> Deary me. Did you actually test out that bit of code before you posted it?

>>> execfile("QuoteSQL.py")
>>> EscapeSQLWild(r"\%")
'\\\\%'
>>> SQLString("%" + EscapeSQLWild(r"\%") + "%")
'"%\\\\\\\\%%"'
>>> EscapeSQLWild(r"\%") == r"\\%"
True
>>> SQLString("%" + EscapeSQLWild(r"\%") + "%") == r'"%\\\\%%"'
True



From eric.richmond at gmail.com  Tue Sep  5 02:26:29 2006
From: eric.richmond at gmail.com (Eric)
Date: 4 Sep 2006 23:26:29 -0700
Subject: pyPgSQL / trac issues
Message-ID: <1157437589.893086.133880@b28g2000cwb.googlegroups.com>

Hey guys,

Has anyone seen this error when installing trac?  The problem seems
related to pyPgSQL, which is installed.  (Although I had to go in and
add some headers to make it work)

Templates directory [/usr/local/share/trac/templates]>

Creating and Initializing Project
Failed to create environment.
/usr/local/lib/python2.4/site-packages/pyPgSQL/libpq/libpqmodule.so:
undefined symbol: lo_export
Traceback (most recent call last):
  File "/usr/local/lib/python2.4/site-packages/trac/scripts/admin.py",
line 139, in env_create
    self.__env = Environment(self.envname, create=True, db_str=db_str)
  File "/usr/local/lib/python2.4/site-packages/trac/env.py", line 79,
in __init__
    self.create(db_str)
  File "/usr/local/lib/python2.4/site-packages/trac/env.py", line 197,
in create
    db.init_db(self.path, db_str)
  File "/usr/local/lib/python2.4/site-packages/trac/db.py", line 442,
in init_db
    cls.init_db(**args)
  File "/usr/local/lib/python2.4/site-packages/trac/db.py", line 408,
in init_db
    self = cls(**args)
  File "/usr/local/lib/python2.4/site-packages/trac/db.py", line 376,
in __init__
    from pyPgSQL import PgSQL
  File "/usr/local/lib/python2.4/site-packages/pyPgSQL/PgSQL.py", line
449, in ?
    from libpq import *
  File
"/usr/local/lib/python2.4/site-packages/pyPgSQL/libpq/__init__.py",
line 23, in ?
    from libpq import *
ImportError:
/usr/local/lib/python2.4/site-packages/pyPgSQL/libpq/libpqmodule.so:
undefined symbol: lo_export
Failed to initialize environment. 1
Traceback (most recent call last):
  File "/usr/local/lib/python2.4/site-packages/trac/scripts/admin.py",
line 594, in do_initenv
    self.env_create(db_str)
  File "/usr/local/lib/python2.4/site-packages/trac/scripts/admin.py",
line 144, in env_create
    sys.exit(1)
SystemExit: 1



From eurleif at ecritters.biz  Thu Sep 28 06:04:47 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Thu, 28 Sep 2006 06:04:47 -0400
Subject: Auto color selection PIL
In-Reply-To: <mailman.862.1159421908.10491.python-list@python.org>
References: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>	<451b0c80$0$25785$4d3efbfe@news.sover.net>
	<mailman.862.1159421908.10491.python-list@python.org>
Message-ID: <451b9e00$0$25777$4d3efbfe@news.sover.net>

Gabriel Genellina wrote:
> Try this. It first chooses 0, 1/2, then 1/4, 3/4, then */8...
> It's the best I could make if you don't know the number of colors 
> beforehand. If you *do* know how many colors, your previous response is OK.

Um, that's the same thing my second suggestion does:

  >>> h = hues()
  >>> h.next()
  0.0
  >>> h.next()
  0.5
  >>> h.next()
  0.25
  >>> h.next()
  0.75
  >>> h.next()
  0.125

Your implementation is less terse than mine, though. And I suspect it 
runs faster, though I haven't checked that.


From exarkun at divmod.com  Thu Sep 21 09:07:44 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Thu, 21 Sep 2006 09:07:44 -0400
Subject: Priority based concurrent execution
In-Reply-To: <1158839805.938510.190250@b28g2000cwb.googlegroups.com>
Message-ID: <20060921130744.1717.561600292.divmod.quotient.55795@ohm>

On 21 Sep 2006 04:56:46 -0700, "Doug.Fort at gmail.com" <doug.fort at gmail.com> wrote:
>
>Willi Richert wrote:
>> Hi,
>>
>> I have a simulation application (PlayerStage) in which the robot is asked
>> every ~200ms for an action. In the meantime the robot has to do some
>> calculation with the perception. As the calculation gets more and more time
>> consuming I am thinking about outsourcing it into a concurrently running
>> method. If the calculation takes too long it would be ok for the result to be
>> incorporated in some future cycle of the main loop, resulting in the
>> calculation being done less and less often and the main loop executing some
>> stop behavior.
>> My question: Is there a possibility in Python (either with the threading
>> module or with Twisted's non-threading style) to prioritize the two
>> (pseudo-)concurrent methods so that the main tread is further on executed
>> every ~200ms and the calculation thread being executed only in "idle" time
>> slots?
>>
>> Thanks,
>> wr
>
>Hi,
>
>I suggest taking a look a PEP 342
>http://www.python.org/dev/peps/pep-0342/. The new coroutines capability
>in Python 2.5 seems to be intended for exactly what you are doing.

Note that the title of the PEP is misleading and coroutines have not been
introduced in Python 2.5.

Generators (either pre-2.5 or post-2.5) can be used as an application
API to an implementation of something like what the poster is requesting,
inasmuch as many people find them to be a useful way to split a task up
into small pieces.  However, aside from syntactic convenience, they don't
really bring anything fundamentally different to the table.

Jean-Paul


From zeng at adobe.com  Mon Sep 18 18:58:52 2006
From: zeng at adobe.com (Ted Zeng)
Date: Mon, 18 Sep 2006 15:58:52 -0700
Subject: Could not build MySQLdb on PowerMac (PPC)
In-Reply-To: <4n87ceF96qbfU1@uni-berlin.de>
Message-ID: <454FD769B559DD4BAC93B2CCA7BEBDBE0121C877@namail2.corp.adobe.com>

Thank. I got it installed by following your instructions.

I also needed to add the path to $PATH in the shell to make it work.


ted

-----Original Message-----
From: python-list-bounces+zeng=adobe.com at python.org
[mailto:python-list-bounces+zeng=adobe.com at python.org] On Behalf Of Diez
B. Roggisch
Sent: Monday, September 18, 2006 11:38 AM
To: python-list at python.org
Subject: Re: Could not build MySQLdb on PowerMac (PPC)

Ted Zeng schrieb:
> Hi,
> 
> I am new to Python. I am trying to build MySQLdb for my PowerPC
> PowerMac.
> I just downloaded the source last week and tried to build it.
> But I got the error messages as follow. I checked and there is no such
> files as 
> mysql_config
> mysql.h
> my_config.h
> ...
> 
> Did I download the wrong source?

You need the mysql development files. You could e.g. use fink to install

mysql and the development files package. On my machine it's called 
mysql14-dev.


Diez
-- 
http://mail.python.org/mailman/listinfo/python-list


From deets at nospam.web.de  Wed Sep 13 06:05:04 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 13 Sep 2006 12:05:04 +0200
Subject: How to write UNIX daemons in Python?
References: <1158137951.766580.321020@e3g2000cwe.googlegroups.com>
Message-ID: <4mq3egF7devbU1@uni-berlin.de>

gnewsg at gmail.com wrote:

> Hi all. I've just finished to write an FTP daemon in Python.
> To do things well I'd like to write an 'insteller' to permit the end
> user to 'deeply' install the package inside the system. In details I
> would like that installer is able to do the following operations:
> 
> - copy ftpd.py in /usr/bin.
> - depending on the system, it should be able to determinate where
> service startup directory is located (for example /etc/init.d)  and
> copy a script able to automatically run /usr/ftpd.py at startup.
> - optionally install a manual callable with "man ftpd".
> - many other operations about the installation of a package.
> 
> What should I use to do something like that? Do I have to use
> distutils? Do I have to use third party packages? Do I have to write a
> "setup.py" and solve the problem manually?
> This last solution is problematic becouse, for (dumb) example, Debian
> wants executable/programs to be located in /usr/bin while Fedora uses
> another path (for example /usr/sbin).
> 
> Another question: what about .deb, .rpm, [...] packages?
> Does it possible to use them with Python programs?
> Resolving third party dependancies by using them could be a nice thing.

You can use setuptools to generate scripts in the various bin-directories.
And of course you could try and make setup.py detect the system & adapt the
necessary paths accordingly.

But the best thing to do would certainly be a package - however, I'm not
aware that there is any support for that. But a look here might be a start:

http://wiki.debian.org/DebianPythonFAQ

Diez


From sjdevnull at yahoo.com  Mon Sep  4 15:36:33 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 4 Sep 2006 12:36:33 -0700
Subject: threading support in python
In-Reply-To: <1157387626.242107.92070@p79g2000cwp.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
Message-ID: <1157398593.191972.240270@p79g2000cwp.googlegroups.com>

Sandra-24 wrote:
> The trouble is there are some environments where you are forced to use
> threads. Apache and mod_python are an example. You can't make use of
> mutliple CPUs unless you're on *nux and run with multiple processes AND
> you're application doesn't store large amounts of data in memory (which
> mine does) so you'd have to physically double the computer's memory for
> a daul-core, or quadruple it for a quadcore.

You seem to be confused about the nature of multiple-process
programming.

If you're on a modern Unix/Linux platform and you have static read-only
data, you can just read it in before forking and it'll be shared
between the processes..

If it's read/write data or you're not on a Unix platform, you can use
shared memory to shared it between many processes.

Threads are way overused in modern multiexecution programming.  The
decision on whether to use processes or threads should come down to
whether you want to share everything, or whether you have specific
pieces of data you want to share.  With processes + shm, you can gain
the security of protected memory for the majority of your code + data,
only sacrificing it where you need to share the data.

The entire Windows programming world tends to be so biased toward
multithreading that they often don't even acknowledge the existence of
generally superior alternatives.  I think that's in large part because
historically on Windows 3.1/95/98 there was no good way to create
processes without running a new binary, and so a culture of threading
grew up.  Even today many Windows programmers are unfamiliar with using
CreateProcessEx with SectionHandle=NULL for efficient copy-on-write
process creation.

> And forget about running a
> windows server, apache will not even run with multiple processes.

It used to run on windows with multiple processes.  If it really won't
now, use an older version or contribute a fix.

Now, the GIL is independent of this; if you really need threading in
your situation (you share almost everything and have hugely complex
data structures that are difficult to maintain in shm) then you're
still going to run into GIL serialization.  If you're doing a lot of
work in native code extensions this may not actually be a big
performance hit, if not it can be pretty bad.



From sh at defuze.org  Fri Sep 29 07:58:18 2006
From: sh at defuze.org (Sylvain Hellegouarch)
Date: Fri, 29 Sep 2006 12:58:18 +0100 (BST)
Subject: [IronPython] [ANN] IronPython Community Edition 1.0r2
In-Reply-To: <5b0248170609290452i7f86dfe7na49cebb55da85eba@mail.gmail.com>
References: <5b0248170609290452i7f86dfe7na49cebb55da85eba@mail.gmail.com>
Message-ID: <38701.194.221.74.7.1159531098.squirrel@mail1.webfaction.com>

Brilliant Seo. Thanks a lot :)

BTW, if it can be useful and you're happy with the code, don't hesitate to
include my port of the Gzip module. Its a BSD license :)

- Sylvain

> This is the second release of IronPython Community Edition (IPCE),
> 1.0 revision 2, based on IronPython 1.0.
>
> Get it here:
> http://sparcs.kaist.ac.kr/~tinuviel/download/IPCE-1.0r2.zip
>
> Binary is built with Mono 1.1.17.1.
>
> BIG WARNING: it won't work with Mono versions below 1.1.17. Please
> don't mail me or IronPython mailing list before checking your Mono
> version!
>
> IPCE has a new home on SourceForge:
> http://fepy.sourceforge.net/
>
> And here's the license and the summary of applied patches:
> http://fepy.sourceforge.net/license.html
> http://fepy.sourceforge.net/patches.html
>
> Changes in this revision:
>
> * Includes the Python standard library from CPython 2.4.3.
> (Not everything is included -- that would be pointless. Those I tested and
> work reasonably are included.)
>
> * Includes following CPython-compatible wrappers for .NET library:
> md5, pyexpat, select, sha, socket, ssl, unicodedata.
>
> * Includes DB-API wrapper for ADO.NET.
>
> * Includes BeautifulSoup and ElementTree for you to test. (Both work
> great with IronPython!)
>
> * Does not include Doc, Src, Tutorial from the original IronPython
> release.
> You know where to get them... Reduces size by about half.
>
> * Extracts to IPCE-1.0r2. (The first revision extracted to IronPython-1.0
> and it could overwrite existing installation. Thanks to Anthony Baxter
> for pointing this out.)
>
> --
> Seo Sanghyeon
> _______________________________________________
> users mailing list
> users at lists.ironpython.com
> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>



From fredrik at pythonware.com  Thu Sep 14 03:15:01 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 09:15:01 +0200
Subject: best small database?
In-Reply-To: <1158198592.409671.244610@h48g2000cwc.googlegroups.com>
References: <0rdNg.6440$c22.5757@trnddc07>	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>	<1158125595.442379.287900@e63g2000cwd.googlegroups.com>	<mailman.3.1158126072.10491.python-list@python.org>
	<1158198592.409671.244610@h48g2000cwc.googlegroups.com>
Message-ID: <eeavhm$dh8$1@sea.gmane.org>

Blair P. Houghton wrote:

> Mmmm, no.
> 
> I'm saying that the change from Oracle 9 to Oracle 10 is like changing
> from ffs to fat32.

well, I'm quite sure that the people I know who's spending a lot of 
their time moving stuff from Oracle N to Oracle N+1 (and sometimes 
getting stuck, due to incompatibilities between SQL and SQL and a lack 
of infinite resources) would say you're completely and utterly nuts.

</F>



From bj_666 at gmx.net  Wed Sep  6 11:24:55 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 06 Sep 2006 17:24:55 +0200
Subject: IronPython 1.0 - Bugs or Features?
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
Message-ID: <pan.2006.09.06.15.24.51.384111@gmx.net>

In <edmlbv$a9h$1 at newsreader2.netcologne.de>, Claudio Grondi wrote:

> The context:
>    C:\IronPython> ipy.exe
>    IronPython 1.0.60816 on .NET 2.0.50727.42
>    Copyright (c) Microsoft Corporation. All rights reserved.
> vs.
>    C:\Python24> python.exe
>    Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] 
> on win32
> 
> IronPython raises "UnboundLocalError: local variable 'strData' 
> referenced before assignment" error in following case:
> <code>
>      while(someCondition):
>        try:
>          strData = strSomeValue()
>        except:
>          pass
>        if( type(strData) == str ) : ### <<< HERE THE ERROR
>          doSomething()
> </code>
> CPython 2.4.2 doesn't raise an error with same code.

Well I get a `NameError`  for `someCondition`.  Please post a minimal
*working* example that produced the error.

Ciao,
	Marc 'BlackJack' Rintsch


From jjl at pobox.com  Fri Sep  8 14:53:07 2006
From: jjl at pobox.com (John J. Lee)
Date: 08 Sep 2006 19:53:07 +0100
Subject: Javadoc style python manual?
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
Message-ID: <upse6197w.fsf@pobox.com>

xiong.xu.cn at gmail.com writes:

> Hi there,
> 
> I'm new to python and I'm from the java world.
> Though I love to learn python, I'm not very comfortable with the python
> documentation.
> Because when i read jdk doc, i can see the class hierachy, class
> member, class methods etc in html docs. It's very easy for me to
> understand the Java language.
> But in python, i find it kind of inconvient.

Are you talking about the Python standard library (the "stdlib"), or
the set of all Python modules in the world?  The stdlib docs have a
pretty rigid format (though a few modules do vary -- and I don't in
principle begrudge authors some wiggle room, to allow them to say what
they want to say more clearly).  It's just a different format to Java.
That's not *always* a capital offence ;-)

Outside any one project, in general, it has always seemed 10x more
important to me that the docs are set out in a way that suits that
project than it is to conform to some global standard.  In fact, some
peoples' complacent assertions that Python docs are inferior for this
reason really winds me up ;-)  Mind you, the last person who said that
to me was also Chinese, and I guess I can understand that, if Python
documentation were written in Chinese, the relative benefits of
flexibility and consistency in doc structure would be very different
for me!

In a few years it will be us English monoglots who will have to learn
Chinese to read *your* docs :-)

I have to say that, very recently, I've found making use of the
various API doc tools in Python of pretty painful, though -- but that
pain is precisely because of my decision to do exactly what's right
for my project, seeing little value -- other than implementation
convenience -- in following some global standard.  If I just wanted
standard input and output formats, it is just as easy as in the Java
world -- for example, epydoc supports JavaDoc syntax (amongst other
formats), and PythonDoc follows JavaDoc's syntax fairly closely.

(Personally, I ended up using epydoc with my own patched HTML output
module, to get simpler and fewer pages out of it.  PythonDoc is nice
for being far simpler, but I hate the XML-ish markup syntax.)

The Perl story used to be that the POD format was great because it
made people actually sit down and write docs.  I can't say I've
noticed it stopping Python module authors writing docs, though:
docstrings and plain text or HTML work pretty well as a "never mind
the format, sit down and write the **** docs" format.

foolish-consistency-and-all-that-ly y'rs


John



From no at spam.com  Fri Sep 29 16:06:51 2006
From: no at spam.com (Farshid Lashkari)
Date: Fri, 29 Sep 2006 13:06:51 -0700
Subject: storing variable names in a list before they are used?
In-Reply-To: <hQeTg.57$1n3.320@news.tufts.edu>
References: <hQeTg.57$1n3.320@news.tufts.edu>
Message-ID: <q0fTg.15937$nm1.10635@fed1read04>

Hi John

John Salerno wrote:
> how would I go about putting these variable names in a list? I know I 
> can't leave them as above, but if I put them in as a string, then how do 
> I later "transform" them into an actual variable for assign, such as:
> 
> first_name = widget.get_text()
> 
> Is there some kind of idiom that does this sort of work?

What scope do you want these variable names to show up in? For example, 
if you want them to be defined in the global scope then you can do the 
following:

name = 'first_name'

globals()[name] = widget.get_text()

print first_name


If you want these variables to be assigned to an object then you can use 
setattr():


name = 'first_name'

setattr(obj,name,widget.get_text())

print obj.first_name


Hope this helps

-Farshid


From grflanagan at yahoo.co.uk  Wed Sep 27 04:29:40 2006
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: 27 Sep 2006 01:29:40 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159277151.292508.55360@i3g2000cwc.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
	<1159277151.292508.55360@i3g2000cwc.googlegroups.com>
Message-ID: <1159345780.600243.198100@h48g2000cwc.googlegroups.com>


volcano wrote:

> volcano wrote:
> > Hello, folks!
> > A trivial question - I have a working Python script that I have to
> > invoke from C++ code. No fancy stuff - just run the whole script with
> > its parameters. No callbacks, no signalling - nada, just
> > stupid,primitive, straightforward call.
> >
> > And while there is a lot of help on embedding, I could not find out how
> > to run script as a whole.SOS!!!!
>
> Thanks a lot to all of you who cared to answer! Eventually it was
> "::CreateProcess", and it works!
>

I used to find http://pinvoke.net a good resource when I was doing
Active Directory stuff.  Just for interest's sake, cutting and pasting
from the CreateProcess page, the following arcana will start Python (
again from C#, but here you can see the internals at least):

using System;
using System.Runtime.InteropServices;

class Class1
{
	[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
	public struct STARTUPINFO
	{
		Int32 cb;
		string lpReserved;
		string lpDesktop;
		string lpTitle;
		Int32 dwX;
		Int32 dwY;
		Int32 dwXSize;
		Int32 dwYSize;
		Int32 dwXCountChars;
		Int32 dwYCountChars;
		Int32 dwFillAttribute;
		Int32 dwFlags;
		Int16 wShowWindow;
		Int16 cbReserved2;
		IntPtr lpReserved2;
		IntPtr hStdInput;
		IntPtr hStdOutput;
		IntPtr hStdError;
	}

	[StructLayout(LayoutKind.Sequential)]
	public struct PROCESS_INFORMATION
	{
		public IntPtr hProcess;
		IntPtr hThread;
		public int dwProcessId;
		public int dwThreadId;
	}

	[StructLayout(LayoutKind.Sequential)]
	public struct SECURITY_ATTRIBUTES
	{
		public int nLength;
		public IntPtr lpSecurityDescriptor;
		public int bInheritHandle;
	}

	[DllImport("kernel32.dll")]
	public static extern bool CreateProcess(string lpApplicationName,
		string lpCommandLine, ref SECURITY_ATTRIBUTES lpProcessAttributes,
		ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandles,
		uint dwCreationFlags, IntPtr lpEnvironment, string
lpCurrentDirectory,
		ref STARTUPINFO lpStartupInfo,
		out PROCESS_INFORMATION lpProcessInformation);

	[STAThread]
	static void Main(string[] args)
	{
		const uint NORMAL_PRIORITY_CLASS = 0x0020;

		bool retValue;
		string Application = @"c:\python\python24\python.exe";
		string CommandLine = "";
		PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION();
		STARTUPINFO sInfo = new STARTUPINFO();
		SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES();
		SECURITY_ATTRIBUTES tSec = new SECURITY_ATTRIBUTES();
		pSec.nLength = Marshal.SizeOf(pSec);
		tSec.nLength = Marshal.SizeOf(tSec);

		retValue = CreateProcess(Application,CommandLine,
			ref pSec,ref tSec,false,NORMAL_PRIORITY_CLASS,
			IntPtr.Zero,null,ref sInfo,out pInfo);

	}
}



From deets at nospam.web.de  Tue Sep 26 05:29:07 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 26 Sep 2006 11:29:07 +0200
Subject: Printing a percent sign
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>
	<efaq7s$rfd$6@lust.ihug.co.nz>
Message-ID: <4nsa74FbvnabU1@uni-berlin.de>

Lawrence D'Oliveiro wrote:

> In message <1159230293.270822.50390 at d34g2000cwd.googlegroups.com>, John
> Machin wrote:
> 
>> 1. Reasoning: How do you get a literal "'" into an SQL string constant?
>> How do you get a literal "\" into a Python string constant? How do you
>> get a literal "$" into some *x shell command lines? Do you detect a
>> pattern?
> 
> None of which applies to escaping of % characters in format strings.

Its the pattern of escaping here, and yes, it applies: usually, a escaping
character can be literally inserted by doubling it. I'm currently a bit
unsure of the single-quote for sql though, but I'm oscillating between ''
or '''. So - it applies.

Diez


From Sebastien.Boisgerault at gmail.com  Wed Sep 27 14:12:21 2006
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 27 Sep 2006 11:12:21 -0700
Subject: ElementTree and proper identation?
In-Reply-To: <iYySg.34$1n3.469@news.tufts.edu>
References: <iYySg.34$1n3.469@news.tufts.edu>
Message-ID: <1159380741.197268.122790@m73g2000cwd.googlegroups.com>


John Salerno a ?crit :

> I've been doing a little studying of ElementTree and it doesn't seem
> very satisfactory for writing XML files that are properly
> formatted/indented. I saw on the website that there is an
> indent/prettyprint function, but this isn't listed in the Python docs
> and I didn't see it after doing a dir(), so I guess it isn't a part of
> the Python version.

It *may* be included in a *future* release of ElementTree. For now, why
don't
you simply drop the 12 lines of codes of the prettyprint function into
your
project ? Source available at http://effbot.org/zone/element-lib.htm

Cheers,

SB



From tim at tdw.net  Fri Sep 29 11:26:27 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 29 Sep 2006 16:26:27 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <R53637327.467.1352.3@mx-extra>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
Message-ID: <9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>

On 29/09/06, Matthew Warren <Matthew.Warren at digica.com> wrote:
>  I have
> found that in real usage of other programs within the company that use
> lockfiles, it sometimes causes a bit of troubleshooting time when it stops
> working due to a stale lockfile.. This especially happens when the program
> is killed, the lockfile remains and causes minor annoyance (to somebody who
> knows that is, more annoyance to somebody who doesn't).

Then they were checking for the wrong thing :)      Chcking for a lock
file's existance is prone to the above problem.  Checking to see if
anyone "owns" the lock file is better,  and if a running program
doesn't close gracefully it still releases the lock file.

def check_lock():
    import os, sys
    try:
        os.remove({filename})
    except:
        if "Permission denied" in sys.exc_info()[1]:
            print 'This program is already running'
            sys.exit()
    f_lock = open({filename},'w')

You may want to close the lock file properly during a gracefull shutdown.

HTH :)


From skip at pobox.com  Mon Sep  4 12:07:28 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 4 Sep 2006 11:07:28 -0500
Subject: Manipulating GIF image frames w/ PIL - where'd my palette go?
Message-ID: <17660.20288.749805.456333@montanaro.dyndns.org>

I'm unclear how PIL handles multi-frame GIF images.  I have such a GIF image
in a file, bogus.gif.  I can view the individual frames like so
(ImageSequence is from the PIL tutorial):

    >>> img = Image.open("bogus.gif")
    >>> for frame in ImageSequence(img):
    ...   frame.show()

All but the first image appears black-and-white.  They apparently lose the
color palette associated with the overall image.  The palette for the
original image and the individual frames is the same, the histograms suggest
they have more than two colors and both the image the frames have mode 'P'.
What have I missed?

Thx,

Skip



From pwatson at redlinepy.com  Mon Sep 11 10:19:42 2006
From: pwatson at redlinepy.com (Paul Watson)
Date: Mon, 11 Sep 2006 09:19:42 -0500
Subject: best small database?
In-Reply-To: <0rdNg.6440$c22.5757@trnddc07>
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <4505707E.2080804@redlinepy.com>

David Isaac wrote:
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.
> 
> Suggestions?
> 
> Thank you,
> Alan Isaac

If you want really simple, look at the anydbm module.  If nothing better 
is available, anydbm will use dumbdbm.  All of these are in the Python 
build, so you do not need to fetch/read/install anything additional.

Doing the DB-API would be much stronger, but might be overkill in your 
situation.


From sjmachin at lexicon.net  Sun Sep 24 18:32:20 2006
From: sjmachin at lexicon.net (John Machin)
Date: 24 Sep 2006 15:32:20 -0700
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
Message-ID: <1159137139.987228.294950@i42g2000cwa.googlegroups.com>

Antoine De Groote wrote:

>
> is there a python equivalent for the ruby %w operator?
> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>

| >>> "a b c".split()
| ['a', 'b', 'c']

... appears to match your single example.

HTH,
John



From robert.kern at gmail.com  Mon Sep 25 02:49:23 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 25 Sep 2006 01:49:23 -0500
Subject: unicode, bytes redux
In-Reply-To: <45177946.1020005@jamots.com>
References: <45177946.1020005@jamots.com>
Message-ID: <ef7u5f$7jc$1@sea.gmane.org>

willie wrote:
> (beating a dead horse)
> 
> Is it too ridiculous to suggest that it'd be nice
> if the unicode object were to remember the
> encoding of the string it was decoded from?

Yes. The unicode object itself is precisely the wrong place for that kind of 
information. Many (most?) unicode objects during the lifetime of a program 
*won't* be decoded from a byte string at all; they will be formed by operations 
with other unicode objects.

I simply don't see a usecase where keeping that kind of information on the 
unicode object itself actually works. The one you suggest doesn't really make 
any sense to me.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From bob at passcal.nmt.edu  Mon Sep 11 12:52:26 2006
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Mon, 11 Sep 2006 10:52:26 -0600
Subject: Python on handhelds
References: <1157946461.741174.152870@m73g2000cwd.googlegroups.com>
	<7x1wqj12cj.fsf@ruckus.brouhaha.com>
	<45056d02$0$4024$5a62ac22@per-qv1-newsreader-01.iinet.net.au>
Message-ID: <MqidnU-DCuZRDpjYnZ2dnUVZ_qmdnZ2d@nmt.edu>


"Luke Dunstan" <coder_infidel at hotmail.com> wrote in message 
news:45056d02$0$4024$5a62ac22 at per-qv1-newsreader-01.iinet.net.au...
>
> "Paul Rubin" <http://phr.cx at NOSPAM.invalid> wrote in message 
> news:7x1wqj12cj.fsf at ruckus.brouhaha.com...
>> "Nick" <nick.kigs at gmail.com> writes:
>>> I have never programmed in Python a day in my life. My group is working
>>> on developing an application on the Dell Axim hand held that has a
>>> tight deadline. I have heard that Python is particularly advantageous
>>> in rapid prototyping and deployment. I would like to lean this way if I
>>> can. Does anyone know if I can run Python on the Dell Axim handheld. It
>>> runs Windows CE. If so, what all is needed to make this possible.
>>
>> Someone did a WinCE port a while back, but I don't think it's actively
>> used much.  The approach might be reasonable if you're an expert with
>> some time on your hands, but for a newcomer with an onrushing
>> deadline, you may be better off using whatever you're already using
>> (VB or whatever), and keeping Python in mind for some future project.
>
> I agree that it is much less active than Python on other platforms, and in 
> some areas it lags behind the PC, e.g. in GUI toolkits. However, if you 
> want to try it go here:
>
> http://sourceforge.net/projects/pythonce
>
> See also the mailing list:
>
> http://mail.python.org/mailman/listinfo/pythonce
>
>
> Luke Dunstan
>

NSBasic (which has a CE version) is pretty nice for PalmOS.  Making 
applications is pretty straightforward if you don't need to access serial 
ports and stuff like that.  Nice IDE too.

Bob




From fredrik at pythonware.com  Tue Sep 26 12:13:37 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 18:13:37 +0200
Subject: where are isinstance types documented?
In-Reply-To: <wXk*2kLrr@news.chiark.greenend.org.uk>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>	<mailman.661.1159266060.10491.python-list@python.org>
	<wXk*2kLrr@news.chiark.greenend.org.uk>
Message-ID: <efbjjg$l5b$2@sea.gmane.org>

Sion Arrowsmith wrote:
>

>> based on http://docs.python.org/ref/types.html, here's a list of the 
>> most commonly used core types:
>> [ ... ]
>> Sequences:
>>     str
>>     unicode
>>     tuple
>>     list
> 
> And set, presumably.

absolutely!

however, sets don't seem to be mentioned on that page at all (and if 
they were, they should be under mappings, right?).  any documentation 
hackers out there ?

</F>



From fuzzyman at gmail.com  Mon Sep 25 20:14:12 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 25 Sep 2006 17:14:12 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159229652.444400.48580@i3g2000cwc.googlegroups.com>


walterbyrd wrote:
> If so, I doubt there are many.
>
> I wonder why that is?

I earn a living programming with IronPython - at
http://www.resolversystems.com

A very cool place to work. :-)

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml



From ray_usenet at yahoo.com  Tue Sep  5 22:13:33 2006
From: ray_usenet at yahoo.com (Ray)
Date: 5 Sep 2006 19:13:33 -0700
Subject: IronPython 1.0 released today!
In-Reply-To: <mailman.38.1157488049.5279.python-list@python.org>
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <1157508813.912063.215210@i3g2000cwc.googlegroups.com>

Jim Hugunin wrote:
> I'm extremely happy to announce that we have released IronPython 1.0 today!
>  http://www.codeplex.com/IronPython

<snip>

> Thanks - Jim Hugunin (for the IronPython Team)

Congratulations!!!! I've been following IronPython too since you
announced it years back--it's really exciting to hear this, can't wait
to get home to download and play with it! :)

Kudos!
Ray



From martin at v.loewis.de  Wed Sep 13 12:52:34 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 13 Sep 2006 18:52:34 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <1158164270.297334.209790@d34g2000cwd.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
	<ee98cn$qhp$1@foggy.unx.sas.com>
	<mailman.40.1158163197.10491.python-list@python.org>
	<1158164270.297334.209790@d34g2000cwd.googlegroups.com>
Message-ID: <45083752.5050005@v.loewis.de>

John Machin schrieb:
> Any support for the radical notion of the error message giving the full
> path of the file that it's complaining about? If so, I'll lob in an
> enhancement request in the morning ...

A patch would be appreciated much more so.

Regards,
Martin


From casevh at comcast.net  Sat Sep  2 01:27:32 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 1 Sep 2006 22:27:32 -0700
Subject: ANN: GMPY binaries for Windows 2.5
In-Reply-To: <1157153938.998816.134300@b28g2000cwb.googlegroups.com>
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
	<1157153938.998816.134300@b28g2000cwb.googlegroups.com>
Message-ID: <1157174852.888065.79740@m79g2000cwm.googlegroups.com>

> > Notes
> > ====
> > They have not been extensively tested.
>
> They don't work. At least the Pentium4 binary doesn't work,
> same problem as before. Is the patch installed?

I found the problem. Updated binaries should be available in a couple
of hours. I'll add a note to the web page. I tested the patch but then
overwrote the patched file with the unpatched file.

I should quit doing this late at night....

Thanks for testing.

Case



From kbk at shore.net  Wed Sep 20 20:02:59 2006
From: kbk at shore.net (Kurt B. Kaiser)
Date: Wed, 20 Sep 2006 20:02:59 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200609210002.k8L02xNN002362@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  419 open ( +3) /  3410 closed ( +2) /  3829 total ( +5)
Bugs    :  910 open (+12) /  6185 closed ( +5) /  7095 total (+17)
RFE     :  235 open ( +1) /   238 closed ( +0) /   473 total ( +1)

New / Reopened Patches
______________________

Practical ctypes example  (2006-09-15)
       http://python.org/sf/1559219  opened by  leppton

pyclbr reports different module for Class and Function  (2006-09-18)
       http://python.org/sf/1560617  opened by  Peter Otten

Exec stacks in python 2.5  (2006-09-18)
       http://python.org/sf/1560695  opened by  Chaza

Patches Closed
______________

test_grp.py doesn't skip special NIS entry, fails  (2006-06-22)
       http://python.org/sf/1510987  closed by  martineau

New / Reopened Bugs
___________________

some section links (previous, up, next) missing last word  (2006-09-15)
       http://python.org/sf/1559142  opened by  Tim Smith

time.strptime() access non exitant attribute in calendar.py  (2006-09-15)
CLOSED http://python.org/sf/1559515  opened by  betatim

shutil.copyfile incomplete on NTFS  (2006-09-16)
       http://python.org/sf/1559684  opened by  Roger Upole

gcc trunk (4.2) exposes a signed integer overflows  (2006-08-24)
       http://python.org/sf/1545668  reopened by  arigo

2.5c2 pythonw does not execute  (2006-09-16)
       http://python.org/sf/1559747  opened by  Ron Platten

list.sort does nothing when both cmp and key are given  (2006-09-16)
CLOSED http://python.org/sf/1559818  opened by  Marcin 'Qrczak' Kowalczyk

confusing error msg from random.randint  (2006-09-17)
       http://python.org/sf/1560032  opened by  paul rubin

Tutorial: incorrect info about package importing and mac  (2006-09-17)
       http://python.org/sf/1560114  opened by  C L

Better/faster implementation of os.path.split  (2006-09-17)
CLOSED http://python.org/sf/1560161  opened by  Michael Gebetsroither

Better/faster implementation of os.path.basename/dirname  (2006-09-17)
       http://python.org/sf/1560179  reopened by  gbrandl

Better/faster implementation of os.path.basename/dirname  (2006-09-17)
       http://python.org/sf/1560179  opened by  Michael Gebetsroither

copy() method of dictionaries is not "deep"  (2006-09-17)
       http://python.org/sf/1560327  reopened by  gbrandl

copy() method of dictionaries is not "deep"  (2006-09-17)
       http://python.org/sf/1560327  opened by  daniel hahler

python 2.5 fails to build with --as-needed  (2006-09-18)
       http://python.org/sf/1560984  opened by  Chaza

mac installer profile patch vs. .bash_login  (2006-09-19)
       http://python.org/sf/1561243  opened by  Ronald Oussoren

-xcode=pic32 option is not supported on Solaris x86 Sun C  (2006-09-19)
       http://python.org/sf/1561333  opened by  James Lick

Dedent with Italian keyboard  (2006-09-20)
       http://python.org/sf/1562092  opened by  neclepsio

Fails to install on Fedora Core 5  (2006-09-20)
       http://python.org/sf/1562171  opened by  Mark Summerfield

IDLE Hung up after open script by command line...  (2006-09-20)
       http://python.org/sf/1562193  opened by  Faramir^

uninitialized memory read in parsetok()  (2006-09-20)
       http://python.org/sf/1562308  opened by  Luke Moore

Bugs Closed
___________

2.5c2 macosx installer aborts during "GUI Applications"  (2006-09-15)
       http://python.org/sf/1558983  closed by  ronaldoussoren

time.strptime() access non existant attribute in calendar.py  (2006-09-15)
       http://python.org/sf/1559515  closed by  bcannon

list.sort does nothing when both cmp and key are given  (2006-09-16)
       http://python.org/sf/1559818  closed by  qrczak

Better/faster implementation of os.path.split  (2006-09-17)
       http://python.org/sf/1560161  deleted by  einsteinmg

Better/faster implementation of os.path.basename/dirname  (2006-09-17)
       http://python.org/sf/1560179  deleted by  einsteinmg

copy() method of dictionaries is not "deep"  (2006-09-17)
       http://python.org/sf/1560327  closed by  gbrandl

New / Reopened RFE
__________________

Exception need structured information associated with them  (2006-09-15)
       http://python.org/sf/1559549  opened by  Ned Batchelder

String searching performance improvement  (2006-09-19)
CLOSED http://python.org/sf/1561634  opened by  Nick Welch

RFE Closed
__________

String searching performance improvement  (2006-09-19)
       http://python.org/sf/1561634  deleted by  mackstann



From stesch at no-spoon.de  Wed Sep 27 13:18:35 2006
From: stesch at no-spoon.de (Stefan Scholl)
Date: Wed, 27 Sep 2006 19:18:35 +0200
Subject: Computer Language Popularity Trend
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159349867.827187.270390@h48g2000cwc.googlegroups.com>
	<slrnehkht4.7kj.jon+usenet@snowy.squish.net>
Message-ID: <0T3gh0itI5f2Nv8%stesch@parsec.no-spoon.de>

In comp.lang.lisp Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:
> In article <1159349867.827187.270390 at h48g2000cwc.googlegroups.com>, mark.hoemmen at gmail.com wrote:
>>> http://xahlee.org/lang_traf/index.html
>> 
>> Careful there with the sweeping generalizations and quick judgments
>> about languages :)
> 
> I just read "PHP as a language is rather dry and business-like",
> and fell off my chair.

Well, business really is that crazy! :-)


-- 
Web (en): http://www.no-spoon.de/ -*- Web (de): http://www.frell.de/


From eric.talevich at gmail.com  Fri Sep 22 21:08:49 2006
From: eric.talevich at gmail.com (Eric)
Date: 22 Sep 2006 18:08:49 -0700
Subject: Python Input from keyboard
References: <1158961811.122841.163450@e3g2000cwe.googlegroups.com>
	<1158973558.691268.250420@m73g2000cwd.googlegroups.com>
Message-ID: <1158973729.039338.281070@e3g2000cwe.googlegroups.com>

> std::cin << value;


Oops, that should be >>.



From jason at tishler.net  Wed Sep 13 14:19:13 2006
From: jason at tishler.net (Jason Tishler)
Date: Wed, 13 Sep 2006 14:19:13 -0400
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>
	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>
	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>
	<mailman.20.1158149440.10491.python-list@python.org>
	<NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>
Message-ID: <20060913181913.GA3044@tishler.net>

Dave,

On Wed, Sep 13, 2006 at 03:33:01PM +0000, David J. Braden wrote:
> I can now confirm that, yes, IDLE pops up w/o menus under cygwin.

You should be able to workaround this problem by executing idle with the
"-n" option:

    $ idle -n

Jason

-- 
PGP/GPG Key: http://www.tishler.net/jason/pubkey.asc or key servers
Fingerprint: 7A73 1405 7F2B E669 C19D  8784 1AFD E4CC ECF4 8EF6


From perltcl at yahoo.com  Fri Sep 15 11:28:42 2006
From: perltcl at yahoo.com (perltcl at yahoo.com)
Date: 15 Sep 2006 08:28:42 -0700
Subject: fail to indent in inner loop
Message-ID: <1158334122.796811.216280@b28g2000cwb.googlegroups.com>

hi

I've started learning python. I was typing from a tutorial,
and I fail to indent on an inner loop.
I got an error and all my previous typed lines are gone.
is there a way to prevent this.
i don't mind editing the last line, but to lose all the previous lines
are too much.
(since it has history function like bash.)



From paddy3118 at netscape.net  Fri Sep 22 17:08:12 2006
From: paddy3118 at netscape.net (Paddy)
Date: 22 Sep 2006 14:08:12 -0700
Subject: +1 QOTW
In-Reply-To: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
Message-ID: <1158959292.633561.272420@h48g2000cwc.googlegroups.com>


olsongt at verizon.net wrote:
> Did anyone else crack up when Larry Wall described python with the
> statement:
>
> Python, as the "anti-Perl," is heavily invested in maintaining Order.
>
> In the state of the onion address?
>
> http://www.perl.com/pub/a/2006/09/21/onion.html

-3 on QOTW !
The whole article is as he describes it in the opening paragraph, a
rambling strole through whatever took his fancy . Of no great weight
and so the -3. 
Good luck to Larry on Perl 6 though.



From mikeowens at gmail.com  Mon Sep 11 22:28:54 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Mon, 11 Sep 2006 21:28:54 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158024230.139214.197070@e3g2000cwe.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
Message-ID: <df2316bd0609111928q65f9dd54hf928b39b01677cb@mail.gmail.com>

On 11 Sep 2006 18:23:50 -0700, mensanator at aol.com <mensanator at aol.com> wrote:

> Can you run your car on diesel fuel?
>
> Why not?
>
> Because your car's specification says to use gasoline?
>
> If your car has been designed to run on diesel, you shouldn't
> be saying it has gasoline engine. Duh.

No but you can still call it a car with an engine, just as SQLite is a
SQL database, with an SQL engine.

> > Furthermore, I'm not responding to Python's representation of one
> > thing or another. I am responding to some of the ridiculous and unfair
> > criticisms directed at SQLite. Whatever Python did or didn't do, or
> > whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
> > drug through the mud.
>
> Sure it does.

No it doesn't. If you don't like SQLite's design decisions, write your
own embedded relational database, and stop yapping about something you
didn't lift a finger to create, but are clearly trying to benefit
from.

> >From SQLite Homepage
>   documentation
>     Available Documentation
>       Distinctive Features
>
> In manifest typing, the datatype is a property of the
> value itself, not of the column in which the value is
> stored. SQLite thus allows the user to store any value
> of any datatype into any column regardless of the declared
> type of that column. (There are some exceptions to this
> rule: An INTEGER PRIMARY KEY column may only store
> integers. And SQLite attempts to coerce values into the
> declared datatype of the column when it can.)
>
> ***********************************************************
> * The SQL language specification calls for static typing. *
> ***********************************************************

It calls for other things that many databases don't implement or
altogether violate as well, so what? Show me how both MS SQL's T-SQL
and Oracle's PL/SQL procedure languages are so standards compliant
that you can use the same procedure code in both databases. You can't
-- precisely because they ignore or outright violate parts of the
standard as well. What's your position on that? Do some Googling and
you can easily find 18 ways that Oracle's PL/SQL deviates from the
standard. And T-SQL is plainly nowhere close.

> A spcification cannot be a bug (unless it is inconsistent
> with other specifications). An implementation can be,
> but a specification cannot.

Then every database implementation, when held up to the SQL standard,
is equally guilty of being buggy and/or incomplete. Name one database
that fully conforms to SQL 2003. Can't name one? Then why single out
SQLite?

> > Then what does calling it crappy and goofy suggest?
>
> It suggests that the SQLite author is a crackpot.

Crackpot? And now we get to why I took the flamebait -- wonderfully
constructive comments such as this.

I know SQLite's author. Besides being a nice and clearly very
intelligent person, he also holds a master's degree in electrical
engineering from Georgia Tech and a PhD in computer science from Duke
University. His "crackpot" software is used by Sun, Apple, Symbian,
Google, AOL, Philips, DLink, and I don't know how many other
companies, not to mention countless open source projects such as
Mozilla, PHP, and now Python. But I guess they must all be crackpots
too.

It's clear. You're just way too smart for SQLite.


From oripel at gmail.com  Sun Sep 10 08:27:11 2006
From: oripel at gmail.com (oripel)
Date: 10 Sep 2006 05:27:11 -0700
Subject: Function metadata (like Java annotations) in Python
In-Reply-To: <1157857892.537756.181530@p79g2000cwp.googlegroups.com>
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
	<1157857892.537756.181530@p79g2000cwp.googlegroups.com>
Message-ID: <1157891231.654669.255500@h48g2000cwc.googlegroups.com>

Thanks bearophile,

I prefer not to use docstrings for metadata.

1. Not interfering with the other accepted docstring uses may be
difficult (doctests, epydoc)

2. It's impractical for attributes generated by code:

@attr(reference_profile_stats=pstats.Stats("foo.profile"))
def foo():
  ...

Regards,
Ori.

bearophileHUGS at lycos.com wrote:
> oripel:
>
> Maybe this is a silly suggestion, the docstring is already overloaded,
> but it may be used for this too:
>
> def foo():
>     """
>     ...
>     ...
>     @ATTR name="Xander"
>     @ATTR age=10
>     @ATTR hobby="knitting"
>     """
>     ...
>
> (Or somethins similar without the @). Later you can retrive the
> attributes from the docstring, for example using a verbose RE like:
> r"\s* @ATTR \s+ (\w*) \s* = \s* (.*)"
> And you use it to create a dict of attributes.
> The decorators you apply to foo() must keep its docstring too.
> 
> Bye,
> bearophile



From flupke at nonexistingdomain.com  Wed Sep 27 08:04:26 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Wed, 27 Sep 2006 12:04:26 GMT
Subject: odbc DbiDate date conversion
In-Reply-To: <1159346624.217934.48450@i3g2000cwc.googlegroups.com>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
	<1159278687.772964.245190@b28g2000cwb.googlegroups.com>
	<z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
	<1159282560.427973.173510@k70g2000cwa.googlegroups.com>
	<ChbSg.97386$uU7.1346693@phobos.telenet-ops.be>
	<1159346624.217934.48450@i3g2000cwc.googlegroups.com>
Message-ID: <eNtSg.99085$9k5.1271914@phobos.telenet-ops.be>

Frank Millman schreef:
<snip>

> Not that I know of. The results of my investigations so far seem to
> indicate that we have a problem :-(
> 
> Here is a link to an article dated 1998 -
>     https://svn.python.org/www/trunk/pydotorg/windows/OdbcHints.html
> 
> Among other interesting stuff, it states -
> 
> "Notice that result values are converted to Python objects. Dates in
> particular are returned as dbiDate objects. This can be a serious
> limitation, because dbiDate can not represent dates prior to the UNIX
> epoch (1 Jan 1970 00:00:00 GMT). If you try to retrieve earlier dates,
> you'll get garbage and may even provoke a crash."
> 
> I contacted Mark Hammond, author of the win32 extensions, to ask if
> there was a solution and particularly to suggest a modification to
> return a datetime.datetime object. This was his reply -
> 
> "I'd be happy with an option to use the datetime module - maybe it
> could even be on the cursor?  However, I wont have time to do this in
> the short term.
> You could consider using ADO via win32com too..."
> 
> It looks as if we will have to use ADO for now. There is an 'adodbapi'
> module available which is DB-API 2.0 compliant -
> adodbapi.sourceforge.net. I will give it a try.
> 
> Frank

Frank,

thanks for your effort. Looks indeed like it's not going to be solved in
the short term. I will give adodbapi a whirl then.

Thanks,
Benedict


From ironfroggy at gmail.com  Tue Sep 19 00:01:20 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Tue, 19 Sep 2006 00:01:20 -0400
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158636183.450000.121630@h48g2000cwc.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
	<1158551070.407614.40030@m7g2000cwm.googlegroups.com>
	<mailman.228.1158582176.10491.python-list@python.org>
	<1158636183.450000.121630@h48g2000cwc.googlegroups.com>
Message-ID: <76fd5acf0609182101u23fd4147m740d283ee549da69@mail.gmail.com>

On 18 Sep 2006 20:23:03 -0700, Ilias Lazaridis <ilias at lazaridis.com> wrote:
> Steve Holden wrote:
> > Ilias Lazaridis wrote:
> ...
> > > http://www-128.ibm.com/developerworks/linux/library/l-pymeta.html
> > >
> > > I am not so much interested in old-style, as is start production with
> > > python 2.4 (possibly even with python 2.5).
> > >
> >
> > The fact remains that you won't be able to affect the built-in classes
> > such as int and str - they are hard-coded in C (for CPython, at least),
> > and so their metaclass is also implied and cannot be changed.
>
> ...except in C.
>
> I assume the "root class" should be available/changeable in "C", too.
>
> Do I have to change the sources directly, or does python provide
> "C-level-extension/modication" mechanisms, which can be applied to
> core-level classes, too?
>
> Is the Python Object Model documented anywhere in a diagram, something
> similar to this?:
>
> http://case.lazaridis.com/wiki/RubyObjectModel

What could you possibly want to do this for so badly that you would
shun all alternatives and even resort to hacking up the runtime at the
C-level to redefine core types in non-standard and unpredictable
ways?! Seriously, please give a good reason for every doing this. I
can't imagine there is any way it would justify all this in the face
of just looking for an alternative. You aren't trying to use python,
at this point, you are trying to fork it.


From cfbolz at gmx.de  Wed Sep 20 17:58:48 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Wed, 20 Sep 2006 23:58:48 +0200
Subject: py.test and HTML output
In-Reply-To: <a8bfd74c0609191245h3711b033veabf1184ac248309@mail.gmail.com>
References: <a8bfd74c0609191245h3711b033veabf1184ac248309@mail.gmail.com>
Message-ID: <4511B998.6060704@gmx.de>

Hi Victor!

Victor Ng wrote:
> Is there documentation anywhere on how to get py.test to emit nice
> HTML output like the kind that they have for the PyPy project here:
> http://codespeak.net/~hpk/pypy-testresult/ ?

The code that produces that page is rather ad-hoc and PyPy specific,
though maybe you can reuse parts of it. We plan to add better HTML (and
also PDF) reporting in the future, but currently there is a bit too much
going on.

There is some preliminary HTML reporting integrated in the new
distributed test runner that distributes tests across machines:

http://codespeak.net/py/current/doc/test.txt

(search for "distributed"). At one point this HTML reporter should be
made available for non-distributed test runs too (and made more pretty etc.)

> Should I just redirect the stdout to a StringIO and parse the output
> and generate the HTML myself?  I see that there's a htmlreport.py in
> pypy, but I'm not sure how to use it.

The htmlreport.py in PyPy is only used for a very specific situation,
namely for the stdlib compliance tests. It's not very usable in general.
More interesting could be Armin's nightly test runner, which is (I
think) pretty project independent, but I cannot find the source
currently. An example output looks like this:

http://scottdial.com/pypytest/summary.html

Maybe you could write to the py-lib mailing list, where more people are
listening?

py-dev at codespeak.net

We are always interested to hear from users and discuss interesting new
features.

Cheers,

Carl Friedrich Bolz



From bearophileHUGS at lycos.com  Fri Sep 15 20:34:44 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 15 Sep 2006 17:34:44 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
Message-ID: <1158366884.271106.233500@i3g2000cwc.googlegroups.com>

In that case you don't need a lambda:

import Tkinter as tk

class Test:
    def __init__(self, parent):
        buttons = [tk.Button(parent, text=str(x+1),
command=self.highlight(x)) for x in range(5)]
        for button in buttons:
            button.pack(side=tk.LEFT)

    def highlight(self, x):
        print "highlight", x

root = tk.Tk()
d = Test(root)
root.mainloop()

Bye,
bearophile



From donn at u.washington.edu  Wed Sep 13 12:19:53 2006
From: donn at u.washington.edu (Donn Cave)
Date: Wed, 13 Sep 2006 09:19:53 -0700
Subject: eval(repr(object)) hardly ever works
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
	<1158157045.593941.64050@i42g2000cwa.googlegroups.com>
Message-ID: <donn-FFA502.09195213092006@gnus01.u.washington.edu>

In article <1158157045.593941.64050 at i42g2000cwa.googlegroups.com>,
 "Hardcoded Software" <hardcoded.software at gmail.com> wrote:
> Matthew Wilson wrote:
> > I understand that idea of an object's __repr__ method is to return a
> > string representation that can then be eval()'d back to life, but it
> > seems to me that it doesn't always work.
> >
> > For example it doesn't work for instances of the object class:
> >
> > In [478]: eval(repr(object()))
> > ------------------------------------------------------------
> >    File "<string>", line 1
> >      <object object at 0xf233e8>
> >      ^
> > SyntaxError: invalid syntax
> >
> > It seems to work for types like integers and dictionaries and lists,
> > but not for much else.

> I don't think that repr() is for eval(). repr() is for outputting a
> string that represent the object and is not ambiguous. Example: print
> 'foo' == print u'foo' but print repr('foo') != print repr(u'foo')

Right, but that eval() idea dies hard.  The document excerpt
quoted in an earlier followup, for __repr__, now admits that it
might not be possible ... but then the documentation for __str__
right below it says "differs from __repr() in that it does not
have to be a valid Python expression".  There's plenty of evidence
in the standard libraries that people understand these two functions,
but they certainly have arrived at that understanding from some
other route than reading the documentation.

   Donn Cave, donn at u.washington.edu


From tal.no.no.spam at gmail.com  Tue Sep  5 05:04:46 2006
From: tal.no.no.spam at gmail.com (Tal Einat)
Date: 5 Sep 2006 02:04:46 -0700
Subject: newbie pipe question
In-Reply-To: <1157420035.525794.71510@74g2000cwt.googlegroups.com>
References: <1157420035.525794.71510@74g2000cwt.googlegroups.com>
Message-ID: <1157447086.220770.115320@i3g2000cwc.googlegroups.com>


linuxnooby at yahoo.com.au wrote:
> Hi
>
> I want to write a python script that accepts input ( a single line of
> text) from another program (squid proxy) and sends back output ( a
> single line of text). I am not sure how to go about this
>
> cheers David

If you want the script to recieve this line in stdin and write the
output to stdout, you can use the sys.stdin and sys.stdout file
objects. You can also just use "print ..." to write to stdout.
Something like this is simple and readable:

input_line = sys.stdin.readline()
<processing...>
print output_line

- Tal



From fakeaddress at nowhere.org  Fri Sep 22 11:03:10 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 22 Sep 2006 15:03:10 GMT
Subject: send with timeout socket
In-Reply-To: <Xns9846A8DD61EA8stefninalussinanorg@212.27.42.133>
References: <Xns984679EF2DA0Fstefninalussinanorg@212.27.42.133>
	<mailman.456.1158928921.10491.python-list@python.org>
	<Xns9846A8DD61EA8stefninalussinanorg@212.27.42.133>
Message-ID: <OWSQg.3522$vJ2.2897@newssvr12.news.prodigy.com>

St?phane Ninin wrote:
> Yes, I typed it *really* too fast, it would be more something like this:
>    
>     def sendall(self, data):
>         while data:
>             try:
>                 n = self.request.send(data)
>                 data = data[n:]
>             except socket.timeout, e:
>                 if self.isTerminated():
>                     return

And from a previous post:

   (self.isTerminated just checks is some event has been set
    by another thread)

Do you want to timeout on inactivity, or do you want to timeout
if sendall() does not complete within a given time?


-- 
--Bryan


From cfbolz at gmx.de  Fri Sep 29 14:57:56 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Fri, 29 Sep 2006 20:57:56 +0200
Subject: There's another Timbot on the loose!
In-Reply-To: <7xbqoyby2u.fsf_-_@ruckus.brouhaha.com>
References: <7xbqoyby2u.fsf_-_@ruckus.brouhaha.com>
Message-ID: <efjqd5$3rm$2@sea.gmane.org>

Paul Rubin wrote:
> http://web.cecs.pdx.edu/~mpj/timbot/index.html

How said it's another one? Maybe our timbot grew a body.



From george.sakkis at gmail.com  Fri Sep 29 15:15:47 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 29 Sep 2006 12:15:47 -0700
Subject: How to query a function and get a list of expected parameters?
References: <slrnehqpdl.810.matt@mwilson.umlcoop.net>
Message-ID: <1159557347.609619.325050@m73g2000cwd.googlegroups.com>

Matthew Wilson wrote:

> I'm writing a function that accepts a function as an argument, and I
> want to know to all the parameters that this function expects.  How can
> I find this out in my program, not by reading the source?
>
> For example, I would want to know for the function below that I have to
> pass in two things:
>
> def f(x1, x2): return x1 * x2
>
> It would be nice to get the names also.
>
> All help is welcome.
>
> TIA
>
> Matt

Check out the inspect module
(http://www.python.org/doc/current/lib/inspect-classes-functions.html):
>>> from inspect import getargspec
>>> getargspec(f)
(['x1', 'x2'], None, None, None)

George



From deets at nospam.web.de  Fri Sep 29 07:32:41 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 29 Sep 2006 13:32:41 +0200
Subject: File I/O
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
	<1159527353.447436.107610@i42g2000cwa.googlegroups.com>
Message-ID: <4o4eipFcp21dU1@uni-berlin.de>

Kirt wrote:

> 
> jimburton wrote:
>> Kirt wrote:
>> > Hi! I need some help in file I/O
>> >
>> > I have an xml file..
>> [snip]
>> See http://diveintopython.org/xml_processing/
> 
> i dont wanna parse the xml file..

If you play soccer, do you insist on playing with a baseball bat?

The game is called XML, and to play it, you should use a parser. If you
don't, you're up for trouble. 

Diez


From st at tobiah.org  Thu Sep 14 17:12:39 2006
From: st at tobiah.org (tobiah)
Date: Thu, 14 Sep 2006 14:12:39 -0700
Subject: How to convert a timedelta object to a string?
In-Reply-To: <mailman.104.1158267229.10491.python-list@python.org>
References: <mailman.104.1158267229.10491.python-list@python.org>
Message-ID: <4509b8b4$0$19672$88260bb3@free.teranews.com>

Carl J. Van Arsdall wrote:
> Basically I used the datetime module and timedelta objects to calculate 
> a difference between two times.  Now I'm trying to figure out how I make 
> that time delta a string HH:MM:SS 
> 
> 

Oddly enough, str(tdobject) does what you want.

-- 
Posted via a free Usenet account from http://www.teranews.com



From abhishek at ocf.berkeley.edu  Fri Sep  1 22:16:01 2006
From: abhishek at ocf.berkeley.edu (abhishek at ocf.berkeley.edu)
Date: 1 Sep 2006 19:16:01 -0700
Subject: Using eval with substitutions
In-Reply-To: <mailman.10218.1157063541.27775.python-list@python.org>
References: <1157022920.299174.22860@m73g2000cwd.googlegroups.com>
	<mailman.10218.1157063541.27775.python-list@python.org>
Message-ID: <1157163361.524077.319440@m73g2000cwd.googlegroups.com>

Thanks very much for all your suggestions - Peter, Duncan and Frederic.
It was a great help.

Incidentally the question arose while I was trying to solve the 2-nots
problem,
http://www.inwap.com/pdp10/hbaker/hakmem/boolean.html#item19

Part of my program takes a set of boolean expressions in 3 variables
and keeps concatenating them with 'and' and 'or' until all unique
functions have been found. Sometimes it is good to use substitutions
(though not required) to make the patterns apparent. Anyway, the
listing is here,

http://www.ocf.berkeley.edu/~abhishek/twonot3.py

Abhishek



From swell at netcourrier.com  Wed Sep 13 14:34:41 2006
From: swell at netcourrier.com (swell at netcourrier.com)
Date: 13 Sep 2006 11:34:41 -0700
Subject: PumpMessages et WM_QUIT
Message-ID: <1158172481.838646.120350@i42g2000cwa.googlegroups.com>

I have a COM server that throw events that i catch after running the
event loop thanks to pythoncom.PumpMessages(). How can i stop and exit
this loop? I tried to use win32api.PostQuitMessage() but this has no
effect ( the doc says that WM_QUIT stops the PumpMessages loop but it
doesn't)

Does someone know how to exit gracefully from this loop?

Thx
Manu



From eh at mad.scientist.com  Fri Sep  1 17:21:10 2006
From: eh at mad.scientist.com (Eirikur Hallgrimsson)
Date: Fri, 01 Sep 2006 17:21:10 -0400
Subject: Syntax suggestion.
In-Reply-To: <1157143130.533562.314460@m79g2000cwm.googlegroups.com>
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>	<ed6hmc$ld1$1@sunnews.cern.ch>	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
	<1157143130.533562.314460@m79g2000cwm.googlegroups.com>
Message-ID: <44F8A446.7050808@mad.scientist.com>


>> "if" statement. So i thought that ommiting the parentheses and, why
>> not, the commas in such cases will be a sort of beautiful/easier :)
>>
>> Adiaux
>> Samir
>>     
This actually exists.
The language which omits punctuation not actually required to resolve 
ambiguity is called Ruby.
Ruby is subject to a lot of love/hate over this.

Eirikur




From fabianosidler at gmail.com  Fri Sep 22 18:30:36 2006
From: fabianosidler at gmail.com (Fabiano Sidler)
Date: Fri, 22 Sep 2006 22:30:36 +0000
Subject: Are the CALL_FUNCTION_* opcodes ever used?
In-Reply-To: <eev41t$ju$03$1@news.t-online.com>
References: <mailman.428.1158876982.10491.python-list@python.org>
	<eev41t$ju$03$1@news.t-online.com>
Message-ID: <200609222230.36427.fabianosidler@gmail.com>

On Thursday 21 September 2006 22:36, Peter Otten wrote:
> >>> def test():
>
> ...     func(*args)
> ...     func(**kw)
> ...     func(*args, **kw)

Oh, I didn't know the possibility of using the *args and **kwargs semantics
at function call. Thank you for revealing them to me! :)
Now it is also obvious how the CALL_FUNCTION_* opcodes are used.

Greetings,
Fips


From ldo at geek-central.gen.new_zealand  Wed Sep 27 05:55:46 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 21:55:46 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
Message-ID: <efdhp7$uqq$1@lust.ihug.co.nz>

In message <Xns984B6DC5B990Bduncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> 
>> In message <Xns984B5837B9F7Aduncanbooth at 127.0.0.1>, Duncan Booth
>> wrote:
>> 
>>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
>>> 
>>>>     def EscapeSQLWild(Str) :
>>>>         """escapes MySQL pattern wildcards in Str."""
>>>>         Result = []
>>>>         for Ch in str(Str) :
>>>>             if Ch == "%" or Ch == "_" :
>>>>                 Result.append("\\")
>>>>             #end if
>>>>             Result.append(Ch)
>>>>         #end for
>>>>         return "".join(Result)
>>>>     #end EscapeSQLWild
>>> 
>>> That doesn't quite work. If you want to stop wildcards being
>>> interpreted as such in a string used as a parameter to a query, then
>>> you have to escape the escape character as well.
>> 
>> That's part of the separation of function. Note that the above
>> function does not generate a MySQL string literal: you must still put
>> it through the previously-defined SQLString routine, which will
>> automatically escape all the specials added by EscapeSQLWild.
>> 
> You are still missing the point. I'm not talking about generating a MySQL
> string literal, I'm talking about preventing wildcards characters having
> their special meaning when using the string as a parameter in
> cursor.execute.

But that's what cursor.execute will do if you use its parameter-substitution
mechanism--generate a string literal.

> You still have to escape the escape character...

Which will be done by cursor.execute if you use its parameter-substitution
mechanism.

> Calling the SQLString routine in this situation would be wrong because it
> would escape characters such as newline which must not be escaped.

SQLString will convert newlines into the \n sequence in the generated string
literal, which MySQL will interpret as a newline. cursor.execute's
parameter-substitution mechanism would do exactly the same thing.


From sjmachin at lexicon.net  Fri Sep 15 02:59:29 2006
From: sjmachin at lexicon.net (John Machin)
Date: 14 Sep 2006 23:59:29 -0700
Subject: Pre-defining an action to take when an expected error occurs
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
Message-ID: <1158303569.603466.36130@e3g2000cwe.googlegroups.com>

Tempo wrote:
> Thanks for all of the help. It all has been very useful to an new
> python programmer. I agree that I should fix the error/bug instead of
> handeling it with a try/etc. However, I do not know why
> "range(sh.nrows)" never gets the right amount of rows right. For
> example, if the Excel sheet has 10 rows with data in them, the
> statement "range(sh.nrows)" should build the list of numbers [0,
> 1,...9]. It should, but it doesn't do that. What it does is buld a list
> from [0, 1...20] or more or a little less, but the point is that it
> always grabs empy rows after the last row containing data. Why is that?
> I have no idea why, but I do know that that is what is producing the
> error I am getting. Thanks again for the responses that I have received
> already, and again thanks for any further help. Thanks you.

So the xlrd package's Book.Sheet.nrows allegedly "never gets the right
amount of rows right"? Never?? Before making such rash statements in a
public forum [1], you might like to check exactly what you have in your
file. Here's how:

(1) Using OpenOffice.org Calc or Gnumeric (or Excel if you must), open
yourfile.xls and save it as yourfile.csv. Inspect yourfile.csv

(2) Use the runxlrd script that's supplied with xlrd:

    runxlrd.py show yourfile.xls >yourfile_show.txt

Inspect yourfile_show.txt. You'll see things like:
cell A23: type=1, data: u'ascii'
cell B23: type=0, data: ''
cell C23: type=1, data: u'123456'
cell D23: type=0, data: ''
cell E23: type=4, data: 0
The cell-type numbers are in the docs, but briefly: 0 is empty cell, 1
is text, 2 is number, 3 is date, 4 is boolean, 5 is error. If you find
only type=0 in the last row, then indeed you have found a bug and
should report it to the package author (together with a file that
exhibits the problem).

You are likely to find that there are cells containing zero-length
strings, or strings that contain spaces. They *do* contain data, as
opposed to empty cells.

[1] There's a possibility that the package's author reads this
newsgroup, and I've heard tell that he's a cranky old so-and-so; you
wouldn't want him to take umbrage, would you?

HTH,
John



From jstroud at mbi.ucla.edu  Tue Sep 26 21:18:15 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 01:18:15 GMT
Subject: Survival of the fittest
In-Reply-To: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
Message-ID: <qjkSg.6439$vJ2.6155@newssvr12.news.prodigy.com>

baalbek wrote:
> Why? The language is just so well designed (I miss some of Ruby's 
> features, but then, nothing is perfect)

Out of curiosity, what are these features that ruby has that python 
lacks. I've always wondered whether I should look at ruby--whether, as a 
language, it has anything to teach me that say python, C, and Java don't 
(LISP/Scheme is on my short-list to learn.)

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From paul at boddie.org.uk  Sat Sep 30 17:26:46 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 30 Sep 2006 14:26:46 -0700
Subject: PyXML not supported, what to use next?
References: <4o814eFdebrhU1@individual.net>
	<451ed335$0$14732$c3e8da3@news.astraweb.com>
Message-ID: <1159651606.089599.72730@h48g2000cwc.googlegroups.com>

John Salerno wrote:
> Paul Watson wrote:
> > It would appear that xml.dom.minidom or xml.sax.* might be the best
> > thing to use since PyXML is going without support.  Best of all it is
> > included in the base Python distribution, so no addition hunting required.
> >
> > Is this right thinking?  Is there a better solution?
>
> You can try ElementTree, it comes with 2.5 (xml.etree.ElementTree).

Certainly, ElementTree, xml.sax and xml.dom.minidom appear to be viable
as standard library solutions for the foreseeable future. Sadly, Python
XML activities have fragmented since PyXML was in its prime,
reminiscent of that other contentious area of Python standardisation:
Web technologies.

Paul



From usenet-2004 at lithe.de  Tue Sep 12 17:11:13 2006
From: usenet-2004 at lithe.de (Jan Niklas Fingerle)
Date: 12 Sep 2006 21:11:13 GMT
Subject: Validating CSS in python
Message-ID: <45072271$0$30686$9b4e6d93@newsspool1.arcor-online.net>

Hi,

I want to validate CSS in python. I could take the grammar from w3.org
[1] and throw it against one of the many python parsing libraries, but 
I still hope there's a ready-to-use solution somewhere around. The big
point is that I don't want to *understand* CSS, I just need to validate
it (and report errors back to whoever wrote the CSS). Therefore a parser 
that doesn't complain on W3C-approved errors [2] won't help.

I'm looking for a not too non-standard solution. Anything pure-python is
OK, anything that uses C libraries, should be OK, too, interfacing to 
the W3C-Validator [3] would be too java...

Any ideas? 

Cheers,
  --Jan Niklas


[1] http://www.w3.org/TR/CSS21/grammar.html
[2] http://www.w3.org/TR/CSS21/syndata.html#parsing-errors
[3] http://jigsaw.w3.org/css-validator/DOWNLOAD.html


From crosseyedpenguin at cox.net  Thu Sep  7 21:35:16 2006
From: crosseyedpenguin at cox.net (Roger)
Date: Thu, 07 Sep 2006 18:35:16 -0700
Subject: PILGraph Upgrade or Alternative Suggestion
Message-ID: <pN3Mg.4676$y61.3564@fed1read05>

Anyone have an updated version of PILGraph beyond 0.1a7 or a suggestion 
for a light-weight alternative?

By light-weight I mean something that doesn't require many/any packages 
other than PIL and will create plain old round pie-chart PNG graphics 
with titles and legends.  I do need multi-platform for both Linux and 
Windows.  The intended use is to create graphics for web pages on the fly.

TIA,

Roger


From dbraden at invalid.add  Thu Sep 14 18:28:32 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 22:28:32 GMT
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <18p8o1jituaus$.ttuazkwrocia.dlg@40tude.net>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>	<mailman.20.1158149440.10491.python-list@python.org>	<NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>
	<mailman.46.1158171607.10491.python-list@python.org>
	<wr4Og.943$TV3.904@newssvr21.news.prodigy.com>
	<18p8o1jituaus$.ttuazkwrocia.dlg@40tude.net>
Message-ID: <kIkOg.1254$6S3.245@newssvr25.news.prodigy.net>

Thorsten Kampe wrote:
> * David J. Braden (2006-09-14 04:58 +0100)
>> Jason Tishler wrote:
>>> Dave,
>>>
>>> On Wed, Sep 13, 2006 at 03:33:01PM +0000, David J. Braden wrote:
>>>> I can now confirm that, yes, IDLE pops up w/o menus under cygwin.
>>> You should be able to workaround this problem by executing idle with the
>>> "-n" option:
>>>
>>>     $ idle -n
>> Worked great. This "exercise" has also raised my comfort level with the 
>> whole endeavor. To get rebaseall going, I was told to install the 
>> *entire* cygwin package.
> 
> Sorry, but that's nonsense. The only things you need for rebase are
> rebase and ash. You shouldn't install everything if you plan to use
> just a fraction...

Thorsten - I agree with the last sentense, but I'm working totally in 
the dark here; having *just* ash and rebaseall didn't do the trick on 
the default setup I got with cygwin (it was unable to run - I forget the 
err msg. Perhaps the default setup is mirror-specific? Dunno. In any 
case, once I installed all, I /could/ use your initial suggestion, which 
has worked out great. Many thanks!

Regards,
DaveB


From bdesth.quelquechose at free.quelquepart.fr  Tue Sep 26 15:18:55 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 26 Sep 2006 21:18:55 +0200
Subject: iterator question
In-Reply-To: <mailman.716.1159290541.10491.python-list@python.org>
References: <mailman.716.1159290541.10491.python-list@python.org>
Message-ID: <4519797e$0$17791$626a54ce@news.free.fr>

Neal Becker a ?crit :
> Any suggestions for transforming the sequence:
> 
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
> 
> into a succession of tuples:
> 
> [(1, 2), (3, 4)...]
> 
> In other words, given a seq and an integer that specifies the size of tuple
> to return, then for example:
> 
> seq = [a,b,c,d,e,f]
> for e in transform (seq, 2):
>   print e
> 
> would return
> (a,b)
> (c,d)
> (e,f)
> 

Just for the fun (I'm sure someone already posted a far better solution):

def transform(seq, step):
   return [tuple(seq[x: x+step]) \
           for x in range(0, len(seq)-(step -1), step)]


From sjmachin at lexicon.net  Sat Sep  9 12:15:00 2006
From: sjmachin at lexicon.net (John Machin)
Date: 9 Sep 2006 09:15:00 -0700
Subject: best split tokens?
In-Reply-To: <mailman.210.1157817289.5279.python-list@python.org>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
	<mailman.182.1157751737.5279.python-list@python.org>
	<1157756531.475390.100210@b28g2000cwb.googlegroups.com>
	<mailman.197.1157767450.5279.python-list@python.org>
	<1157789391.693000.43470@h48g2000cwc.googlegroups.com>
	<mailman.210.1157817289.5279.python-list@python.org>
Message-ID: <1157818500.564664.250090@p79g2000cwp.googlegroups.com>


Tim Chase wrote:
> >> Any more crazy examples? :)
> >
> > 'ey, 'alf a mo, wot about when 'enry 'n' 'orace drop their aitches?
>
> I said "crazy"...not "pathological" :)
>
> If one really wants such a case, one has to omit the standard
> practice of nesting quotes:
>
> 	John replied "Dad told me 'you can't go' but let Judy"
>
> However, if you don't have such situations and to want to make
> 'enry and 'orace 'appy, you can change the regexp to
>
>
>  >>> s="He was wont to be alarmed/amused by answers that won't work"
>  >>> s2="The two-faced liar--a real joker--can't tell the truth"
>  >>> s3="'ey, 'alf a mo, wot about when 'enry 'n' 'orace drop
> their aitches?"
>
>  >>> r =
> re.compile("(?:(?:[a-zA-Z][-'])|(?:[-'][a-zA-Z])|[a-zA-Z])+")
>
> It will also choke using double-dashes:
>
>  >>> r.findall(s), r.findall(s2), r.findall(s3)
> (['He', 'was', 'wont', 'to', 'be', 'alarmed', 'amused', 'by',
> 'answers', 'that', "won't", 'work'], ['The', 'two-faced',
> 'liar--a', 'real', "joker--can't", 'tell', 'the', 'truth'],
> ["'ey", "'alf", 'a', 'mo', 'wot', 'about', 'when', "'enry", "'n",
> "'orace", 'drop', 'their', 'aitches'])
>
> Or you could combine them to only allow infix dashes, but allow
> apostrophes anywhere in the word, including the front or back,
> one could use:
>
>  >>> r =
> re.compile("(?:(?:[a-zA-Z]')|(?:'[a-zA-Z])|(?:[a-zA-Z]-[a-zA-Z])|[a-zA-Z])+")
>  >>> r.findall(s), r.findall(s2), r.findall(s3)
> (['He', 'was', 'wont', 'to', 'be', 'alarmed', 'amused', 'by',
> 'answers', 'that', "won't", 'work'], ['The', 'two-faced', 'liar',
> 'a', 'real', 'joker', "can't", 'tell', 'the', 'truth'], ["'ey",
> "'alf", 'a', 'mo', 'wot', 'about', 'when', "'enry", "'n",
> "'orace", 'drop', 'their', 'aitches'])
>
>
> Now your spell-checker has to have the "dropped initial or
> terminal letter" locale... :)
> 

Too complicated for string.bleedin'_split(), innit?
Cheers,
John



From fredrik at pythonware.com  Tue Sep 19 10:29:19 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 19 Sep 2006 16:29:19 +0200
Subject: Installing 2.5 with 2.4?
In-Reply-To: <U0TPg.1$1n3.143@news.tufts.edu>
References: <U0TPg.1$1n3.143@news.tufts.edu>
Message-ID: <eeouru$pa5$1@sea.gmane.org>

John Salerno wrote:
> Hi all. Just curious, before I do it myself, about the best way to 
> install 2.5 if it's the only version I want to use. Should I uninstall 
> 2.4 first?

if you don't plan to use it anymore, yes.

> Does 2.5 replace 2.4?

no.

> I doubt the latter, but if I install 2.5, does that mean I need to
 > reinstall all the extensions I had for 2.4 again

yes.

> does 2.5 detect them somehow?

no.  extensions built for 2.5 are, in general, not compatible with 
extensions built for 2.4.

</F>



From Aiwass333 at gmail.com  Wed Sep 13 11:10:52 2006
From: Aiwass333 at gmail.com (RunLevelZero)
Date: 13 Sep 2006 08:10:52 -0700
Subject: Windows bandwidth monitor
Message-ID: <1158160252.697595.123300@p79g2000cwp.googlegroups.com>

Hey guys, I've done some searching but can't seem to find anything that
helps me out. I want to write a simple bandwidth monitor that will sit
in the taskbar of windows and tell me my upload and download speeds. I
intend to use wxpython for the little taskbar icon. If anyone can give
me a helping hand I would be more than appreciative.

Thanks



From python.list at tim.thechases.com  Tue Sep 26 10:17:25 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 26 Sep 2006 09:17:25 -0500
Subject: QuoteSQL
In-Reply-To: <1159279263.25441.28.camel@dot.uniqsys.com>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8cdq$fui$2@lust.ihug.co.nz>	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>	<ef9nib$snj$1@lust.ihug.co.nz>	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
Message-ID: <45193675.5060709@tim.thechases.com>

 > "Need" is a strong word unless something like the
 > following doesn't work for some reason:
 >
 > cur.execute("select * from people where last_name in
 > (%s,%s,%s)", (name1, name2, name3) )

Which could be nicely generalized to something like

 >>> t = (name1, name2, name3)
 >>> cur.execute("select * from people where last_name in (%s)" %
	','.join('%s' for i in xrange(len(t))),
	t)

which will create the number of items in the formatting-string on 
the fly, and then map the tuple using standard DB escaping 
methods.  With older versions of Python, one might have to wrap 
the contents of the join() call in [...]

-tkc






From rshepard at appl-ecosys.com  Tue Sep 12 09:19:22 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Tue, 12 Sep 2006 06:19:22 -0700 (PDT)
Subject: Parsing String, Dictionary Lookups, Writing to Database Table
In-Reply-To: <1158024735.947206.105510@m73g2000cwd.googlegroups.com>
References: <mailman.277.1157994284.5279.python-list@python.org>
	<1158024735.947206.105510@m73g2000cwd.googlegroups.com>
Message-ID: <Pine.LNX.4.64.0609120617250.19998@salmo.appl-ecosys.com>

On Mon, 11 Sep 2006, mensanator at aol.com wrote:

> No, if you're going to insert into sqlite3, you don't want a csv string,
> you want a list of values (see example code below).

   Thank you very much. It makes solid sense and I can see the differences
and where I was not on track. I greatly appreciate the time and effort you
put into helping me.

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From nirnimesh at gmail.com  Thu Sep 21 08:04:32 2006
From: nirnimesh at gmail.com (Nirnimesh)
Date: 21 Sep 2006 05:04:32 -0700
Subject: Working with email and mailbox module
Message-ID: <1158840271.942540.85640@d34g2000cwd.googlegroups.com>

I want to extract emails from an mbox-type file which contains a number
of individual emails.

I tried the python mailbox and email modules individually, but I'm
unable to combine them to get what I want. Mailbox allows me to iterate
over all the mails but doesn't give me access the individual messages
of a multipart mail. The email.Message module provides this, but I'm
unable to iterate through all the messages with this module.

Here's what I want:

Get a list of all messages from mbox-file
For each message, be able to read the header or body individually (so
that I can apply some operation)

Does someone have experience in doing something of this sort?



From sjmachin at lexicon.net  Mon Sep 25 09:57:32 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 06:57:32 -0700
Subject: Unexpected behaviour of csv module
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
	<1159148247.308716.234600@i42g2000cwa.googlegroups.com>
	<ef8208$q37$1$8300dec7@news.demon.co.uk>
	<mailman.556.1159185511.10491.python-list@python.org>
Message-ID: <1159192652.824594.85800@e3g2000cwe.googlegroups.com>

skip at pobox.com wrote:
> One could argue that your CSV file is broken.

Hi Skip,

His CSV file is mildly broken. The examples that I gave are even more
broken, and are typical of real world files created by clueless
developers from databases which contain quotes and commas in the data
(e.g. addresses). The brokenness is not the point at issue. The point
is that the csv module is weakly silent about the brokenness and in
some cases munges the data even further.

>  Of course, since CSV is a
> poorly specified format, that's a pretty weak statement.

It would help if the csv module docs did specify what format it
expects/allows on reading, and what it does on writing. How to quote a
field properly isn't all that mindbogglingly difficult (leaving out
options like escapechar and more-than-minimal quoting):

qc = quotechar
if qc in field:
    out = qc + field.replace(qc, qc+qc) + qc
elif delimiter in field or '\n' in field or '\r' in field:
    out = qc + field + qc
else:
    out = field

Notice how if there are any special characters in the input, the output
has a quotechar at each end. If not, it's broken, and detectably
broken:
abc"def
___^ unexpected quote inside unquoted field
"abc"def
_____^ after quote, expected quote, delimiter, or end-of-line


> I don't remember
> just what your original problem was, but it concerned itself with white
> space as I recall.  Have you tried setting the skipinitialspace parameter in
> your call to create a reader object?
>

The problem has nothing to do with *initial* spaces; the OP's problem
cases involved *trailing* spaces. And that's only a subset of the real
problem: casual attitude towards fields that contain quotes but don't
start and/or end with quotes i.e. they have *not* been created by
applying the usual quoting algorithm to raw data. 

HTH,
John



From onurb at xiludom.gro  Tue Sep 12 11:19:03 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 12 Sep 2006 17:19:03 +0200
Subject: variable update
In-Reply-To: <mailman.347.1158066320.5279.python-list@python.org>
References: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>
	<mailman.347.1158066320.5279.python-list@python.org>
Message-ID: <4506cfe9$0$4333$626a54ce@news.free.fr>

Fredrik Lundh wrote:
(snip)
> 
>    variable = None
> 
>    ... lots of code that may assign to variable ...
> 
>    if variable is not None:
>        print "not defined"

Shouldn't that be:
     if variable is None:
         print "not defined"

?-)

Note to the OP: if None is a valid value for the variable, you may use
another object, ie:

def somefunc(*args, **kw):
  variable = _marker = object()

  (...)

  if variable is _marker:
         print "not defined"

  (...)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From sjmachin at lexicon.net  Wed Sep 27 17:54:19 2006
From: sjmachin at lexicon.net (John Machin)
Date: 27 Sep 2006 14:54:19 -0700
Subject: sqlite3 error
In-Reply-To: <JnzSg.36$1n3.471@news.tufts.edu>
References: <JnzSg.36$1n3.471@news.tufts.edu>
Message-ID: <1159394058.945948.119410@h48g2000cwc.googlegroups.com>


John Salerno wrote:
> CREATE TABLE Researchers (
>      researcherID varchar(9) PRIMARY KEY NOT NULL,
>      birthYear int(4) DEFAULT NULL,
>      birthMonth int(2) DEFAULT NULL,
>      birthDay int(2) DEFAULT NULL,
>      birthCountry varchar(50) DEFAULT NULL,
>      birthState char(2) DEFAULT NULL,
>      birthCity varchar(50) DEFAULT NULL,
>      nameFirst varchar(50) NOT NULL,
>      nameLast varchar(50) NOT NULL,
>      nameGiven varchar(255) DEFAULT NULL,

A bit OT, but one answer to the "can you make a living with just
Python" question is "Yup, tool of choice for rummaging in and fixing
data that's been mangled by users cramming it into dodgy data models"
:-)

(1) Consider that some countries have states/provinces with 3-letter
abbreviations (e.g. Australia) or no abbreviation than I'm aware of in
a Latin alphabet (e.g. China).

(2) It's not apparent how you would use the first, last, and given
names columns, especially with two of them being "not null". Consider
how you would store e.g.:
J Edgar Hoover
DJ Delorie
Sukarno
35
Maggie Cheung Man-Yuk
Molnar Janos
Fatimah binte Rahman
Zhang Manyu

Cheers,
John



From rhymes at myself.com  Thu Sep  7 17:03:01 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 7 Sep 2006 23:03:01 +0200
Subject: [ANN] IronPython 1.0 released today!
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.124.1157638824.5279.python-list@python.org>
	<1hlb5vp.yekzc115cn2k3N%rhymes@myself.com>
	<Xns9837BD23B744Cduncanbooth@127.0.0.1>
Message-ID: <1hlbhbq.f0ih49bq3i8qN%rhymes@myself.com>

Duncan Booth <duncan.booth at invalid.invalid> wrote:
> So? IronPython has a select module although it doesn't seem to be complete
> yet. The IronPython mailing list has discussions about getting CherryPy to
> run, and it sounds as though it isn't quite there yet, but it is getting
> there.

I don't think my answer is wrong. He asked if Twisted runs on IronPython
and as a matter of fact it doesn't. Everything can happen in the future
:-)

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From dbraden at invalid.add  Wed Sep 13 22:20:43 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 02:20:43 GMT
Subject: Scientific computing and data visualization.
In-Reply-To: <mailman.85.1157564525.5279.python-list@python.org>
References: <mailman.85.1157564525.5279.python-list@python.org>
Message-ID: <%%2Og.925$TV3.706@newssvr21.news.prodigy.com>

Fie Pye wrote:
>         Hallo
> 	
> 	I would like to have a high class open source tools for scientific computing and powerful 2D and 3D data visualisation. Therefore I chose python, numpy and scipy as a base. Now I am in search for a visualisation tool. I tried matplotlib and py_opendx with OpenDx. OpenDx seems to me very good but the project py_opendx looks like closed. After py_opendx instalation and subsequent testing I got an error that needs discussion with author or an experienced user. Unfortunately a mail to author returned as undeliverable.
> 	
> 	Does anybody now about suitable visualisation tool?
> 	
> 	Does anybody have an experience with OpenDx and py_opendx instalation?
> 	
> 	Thanks for your response.
> 	
> 	fiepye
> 
> 
> 

What sort of "scientific computing" and visualization do you have in 
mind? I enjoy R for much of my work. See http://www.r-project.org/

Plz let us know what you have discovered, and what you have settled on.

Tchuss,
DaveB


From pine508 at hotmail.com  Mon Sep 25 12:13:00 2006
From: pine508 at hotmail.com (Chelonian)
Date: 25 Sep 2006 09:13:00 -0700
Subject: Advice for a novice on making ambitious cross-platform GUI app
Message-ID: <1159200780.240509.270660@i42g2000cwa.googlegroups.com>

I'm considering trying to learn Python for a specific reason, and
hoped the group might help me get a sense for whether it would be worth
my time.  The situation...

Me:  total beginner w/ a sense of  programming basics and 1 week
familiarizing myself with Python world.  Use WinXP.  Got Python 2.5.
Fooled around in IDLE, made "hello world!" and one which takes user
input and tracks a string or two.

Project:  ambitious GUI program for Win/Mac/Linux.  Target user:
average person.  App to look elegant, and be intuitive, responsive,
exectuable, have its own icon, etc.  Needs to store user info in large
database for the long term, run in the background and pop up at
assigned times.  There are needs for graphing, data analysis, file
management, word processing, text processing, web synchronization, etc.
 It would have to look like commercial software, though it may turn out
to be free open source.  It's envisioned as a pretty tall order, thus
my wonder if I'm delusional in thinking I have any hope to accomplish
this.

To begin, I have decided on wxPython as the GUI toolkit.  Have also
begun trying the SPE editor with wxGlade as the GUI builder, and have
made a few line program to create a window.  Lastly, I have used py2exe
to turn that into an executable file with its library files for running
on computers without Python installed or without the wxPython
libraries.

I have read FAQs and looked into it.  Remaining questions are:

Can Python *alone* produce something like what I've described?  Or
would I have to have some parts written in C?  Or is Python really not
best-suited to these needs?

Is using SPE with wxGlade a good choice?  What about Boa Constructor?

Is it something one person could do over the course of a year or so,
working say 10 hours a week on it?  Or is this really out of reach of
anyone other than a hardcore programmer or even a team of them?

If I write it using Python 2.5 and wxPython, do I have to use py2app or
something to create an executable and necessary library files so it
will run on Mac?  (Because of wxPython's libraries, which the Mac
won't have?).  

Thanks for any thoughts you might share.



From johnjsal at NOSPAMgmail.com  Mon Sep 11 13:28:25 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 11 Sep 2006 17:28:25 GMT
Subject: best small database?
In-Reply-To: <aXfNg.17107$o42.10827@tornado.texas.rr.com>
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
	<ee3vme$cjj$1@panix3.panix.com>
	<aXfNg.17107$o42.10827@tornado.texas.rr.com>
Message-ID: <Z0hNg.2733$No6.53876@news.tufts.edu>

Paul McGuire wrote:
> "Aahz" <aahz at pythoncraft.com> wrote in message 
> news:ee3vme$cjj$1 at panix3.panix.com...
>> In article <4505707E.2080804 at redlinepy.com>,
>> Once Python 2.5 comes out, I recommend using sqlite because it avoids
>> the mess that dbm can cause.
>> -- 
>> Aahz (aahz at pythoncraft.com)           <*> 
>> http://www.pythoncraft.com/
> 
> and if you don't want to wait for 2.5, you can install pysqlite without too 
> much trouble - and it is *very* easy to use!

Yeah, just be sure to do this:

from pysqlite import dbapi2 as sqlite3

then you're ready for 2.5! :)


From kylotan at gmail.com  Wed Sep 20 08:19:06 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 20 Sep 2006 05:19:06 -0700
Subject: Request for elucidation: enhanced generators
In-Reply-To: <mailman.323.1158750988.10491.python-list@python.org>
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
	<mailman.323.1158750988.10491.python-list@python.org>
Message-ID: <1158754746.300782.256090@m73g2000cwd.googlegroups.com>

Steve Holden wrote:
> Ben Sizer wrote:
> > A simple question - can anybody give a short example of how these work
> > and what they are good for? I've read PEP 342 and the associated bit in
> > the What's New section and it's still all Greek to me. The latter seems
> > to focus on how to do it, rather than why you'd do it, so it doesn't
> > aid the understanding too much.
> >
> Unti 2.5 the yield keyword could only be used to produce a value from a
> generator - it introduced a statement.
>
> Now the yield keyword can be used as an expression inside a generator,
> allowing you to send values into the generator by calling its .send()
> method.
>
> If you have no use case for this you are, as always, perfectly free to
> ignore it, as the majority of Python users may well choose to do. Your
> existing generators should continue to work.

But do you have an example of such a use case? That's what I'm missing
here. Without ever having used proper coroutines elsewhere, I have no
real way to appreciate their benefits without a good example.

I don't think it's feasible to just ignore any new feature, as sooner
or later you're going to encounter someone else's code that relies upon
it. Hence why I'd rather not see all sorts of 'optional' extras added
later (like type declarations and so on).

-- 
Ben Sizer



From mak at trisoft.com.pl  Tue Sep 26 16:21:02 2006
From: mak at trisoft.com.pl (Grzegorz Makarewicz)
Date: Tue, 26 Sep 2006 22:21:02 +0200
Subject: 2.5 updates for syntax file
In-Reply-To: <1159217085.967554.196930@i3g2000cwc.googlegroups.com>
References: <FOVRg.23$1n3.227@news.tufts.edu>
	<1159217085.967554.196930@i3g2000cwc.googlegroups.com>
Message-ID: <45198BAE.9010004@trisoft.com.pl>

Andrea wrote:
>> Hi everyone. I'm updating my UltraEdit syntax file for Python 2.5 and
>> was wondering if anyone knew of other additions to make besides these. I
>> found all of these in the What's New document, but wasn't sure if there
>> were other important things to add for highlight.
>>     
>
> Great :)
>
> - Two new built-in functions, any() and all()
> - A new warning, UnicodeWarning
>
>   
Who is using FAR and isn't happy ?

Grzegorz Makarewicz







From steve at holdenweb.com  Sat Sep 30 14:47:55 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 19:47:55 +0100
Subject: DAT file compilation
In-Reply-To: <1159635366_33@sp6iad.superfeed.net>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>	<4o5qhvFd1bddU1@uni-berlin.de>	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>	<1159576888.862008.286980@m73g2000cwd.googlegroups.com>
	<1159635366_33@sp6iad.superfeed.net>
Message-ID: <efmaim$7tf$1@sea.gmane.org>

Roger Upole wrote:
> On Windows NTFS file systems, you can add data to a file using named streams.
> The extra streams aren't visible from Explorer so the average end-user won't
> even know they're there.
> 
I hadn't realised how easy it is to access alternate data streams from 
Python. A filename of the right form ("basefile.ext:alternatename") 
works just fine, it appears.

Unfortunately you then have the problem of how to create it, since there 
is no way to carry it around outside an NTFS filesystem, so some sort of 
post-install script would be required.

There's also the issue that alternate data stream of any significant 
size will be regarded with great suspicion by forensic examinations and 
similar tests.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From freeed at gmail.com  Fri Sep  8 21:25:50 2006
From: freeed at gmail.com (Frederic Wenzel)
Date: Fri, 8 Sep 2006 18:25:50 -0700
Subject: pyserial problem: script stops reading
In-Reply-To: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>
References: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>
Message-ID: <5a8943c0609081825r203d08b5xa4a6225f2d56c337@mail.gmail.com>

I wrote a script on Linux that uses pyserial to read status messages
from a serial line using readlines(). For now, it just displays what
it gets on stdout:

 17:42 | 0005 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:42 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:42 | 0001 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:43 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:43 | 0001 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:43 | 0005 | 02 |   | 5  |Rack Abs.|  -  | --210
 17

After a few hours, or sometimes days, of listening, the script stops
in the middle of the line and does not display any further output (as
you can see with the "17" in the last line above). That happens, even
though I set a timeout of 10s when opening the line, and on timeout it
displays the lines and reopens the port:

ser = serial.Serial(port=1,
                                 baudrate=1200,
                                 rtscts=1,
                                 timeout=10)

while 1:
    lines = sh.readLines()
    for line in lines:
        print line
    ser.close()
    ser.open()

If the script does not time out there, I am not sure what else it is
doing. It seems to be in a wait state it does not get out of.

So even if the line received turned out to have some sort of error, I
think it should time out after a while? Maybe there is some sort of
buffer overrunning (even though the traffic is quite low: a line every
few minutes on average)?

Does anyone see any obvious error? Any hint how I can further debug the problem?

Thanks
Fred


From gerrit.muller at embeddedsystems.nl  Tue Sep 12 08:41:45 2006
From: gerrit.muller at embeddedsystems.nl (Gerrit Muller)
Date: Tue, 12 Sep 2006 14:41:45 +0200
Subject: Get CPU usage of a single process in Windows
In-Reply-To: <mailman.339.1158063359.5279.python-list@python.org>
References: <mailman.339.1158063359.5279.python-list@python.org>
Message-ID: <ee69ua$1d67$1@mud.stack.nl>

[Tim Golden]
<nice answer snipped>

now I only have to find some time to play around...

thanks, Gerrit

-- 
Gaudi systems architecting:
<http://www.gaudisite.nl/>


From sferriol at imag.fr  Fri Sep  1 08:53:19 2006
From: sferriol at imag.fr (Sylvain Ferriol)
Date: Fri, 01 Sep 2006 14:53:19 +0200
Subject: a new object definition
In-Reply-To: <1157108950.928259.316080@e3g2000cwe.googlegroups.com>
References: <ed8rce$ikn$1@trompette.imag.fr>
	<1157100926.420077.229900@p79g2000cwp.googlegroups.com>
	<ed93bq$r42$1@trompette.imag.fr>
	<1157108950.928259.316080@e3g2000cwe.googlegroups.com>
Message-ID: <ed9asm$341$1@trompette.imag.fr>

Michele Simionato a ?crit :
> Sylvain Ferriol wrote:
> 
>>Michele Simionato a ?crit :
>>
>>>See http://www.python.org/dev/peps/pep-0359  (already rejected by
>>>Guido).
>>>
>>
>>i do not understand the withdrawal note, what do "different level" mean ?
>>do you have an example or is it python core implemantation problem ?
> 
> 
> I asked Guido in person at EuroPython. He said the syntax didn't look
> "right" to him. It is as simple as that.
> 
note that we can not use the "make syntax" for a function definition 
because the block is not executed until the function call, while the 
block for a class is executed before the class instanciation
>   Michele Simionato
> 


From python.list at tim.thechases.com  Fri Sep 22 14:08:50 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 22 Sep 2006 13:08:50 -0500
Subject: Replacing line  in a text  file
In-Reply-To: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
Message-ID: <451426B2.80403@tim.thechases.com>

> I am trying to read a file
> This file has a line containing string  'disable = yes'
> 
> I want to change this line to 'disable = no'

Sounds like

	sed -i 's/disable *= *yes/disable = no/' file.txt

would do what you want.  It doesn't catch word boundaries, so if 
you have something like "foodisable = yes", it will replace this 
too.  Additionally, it only expects spaces around the equal-sign, 
so if you have tabs, you'd have to modify accordingly.

If it must be done in python,

import re
r = re.compile(r"(\bdisable\s*=\s*)yes\b")
outfile = file('out.txt', 'w')
for line in file('in.txt'):
	outfile.write(r.sub(r'\1no', line))

Add the re.IGNORECASE option if so desired.  This doesn't have 
the cautions listed above for the sed version.  Wreckless code!

> The concern here is that , i plan to take into account the white spaces
> also.

I'm not sure what you intend by this.  Do you want to disregard 
whitespace?  Do you want to keep leading indentation?

The above python should *just* replace "yes" with "no" in the 
above context, not touching space or anything of the like.

-tkc








From skip at pobox.com  Tue Sep 12 12:04:35 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 12 Sep 2006 11:04:35 -0500
Subject: best way of testing a program exists before using it?
In-Reply-To: <CCAC78D42E32184F8E26DC163DB98306C1B43E@vogbs009.gb.vo.local>
References: <CCAC78D42E32184F8E26DC163DB98306C1B43E@vogbs009.gb.vo.local>
Message-ID: <17670.55955.271279.299033@montanaro.dyndns.org>


    Tim> All that said, I think the only thing would be to add a line to the
    Tim> docs saying sthg like: This will always return False for X_OK under
    Tim> Win32. I'm happy to submit the patch, but is it worth it?

Yes, please do.  If people think it works the same on Unix and Windows,
they'll get burned and just have to reproduce your investigative work to
figure out what happened.

Skip


From adrian.neagu at scansoft.com  Wed Sep 20 09:08:47 2006
From: adrian.neagu at scansoft.com (AdrianNg3)
Date: 20 Sep 2006 06:08:47 -0700
Subject: How to measure memory footprint of Python objects?
In-Reply-To: <mailman.328.1158754483.10491.python-list@python.org>
References: <469735C9CA632F45B1A3E20035C60EEE040D902E@gh-exch1.eu.scansoft.com>
	<mailman.328.1158754483.10491.python-list@python.org>
Message-ID: <1158757727.265159.110190@h48g2000cwc.googlegroups.com>

Fredrik Lundh wrote:
> Neagu, Adrian wrote:
>
> > I have a python program that takes a lot of memory (>hundred Mb).
>
> > I can see the total process size of the Python process (Task manager on MS
> > Win or Unix "ps" command) but that is not precise enough for me
>
> I'm not sure those two statements are compatible, though.
>
> if your program is using hundreds of megabytes, surely kilobyte
> precision should be good enough for you ?
>
Hi Fredrik,

I'll be more precise.

1) Indeed, a few kilobytes are no problem for me. For example, if I
have to write a small function to get my mem size and that function
will allocate a few Python objects that will bias the end result,
that's still OK.

2) The overhead of the Python execution engine in the total size of the
process (C Python, JVM, ...) is more than just "a few kilobytes". As a
last resort, this can be ignored for my purpose at hand (it is a
constant in my comparison of different generations of my Python
application) but it is not really nice (for example, I cannot
meanigfully compare the memory footprint of only my application between
platforms).

3) The real problem with OS-based size of process is the evolution over
time. On MS Win for example, the size of the process is ever-growing
(unless a MS specific consolidation function is called) leading to the
fact that the size of the process and the actual size of the Python
heap(s) has nothing to do with each other towards the end of the
program. I believe that the max size of the process is an indication of
the max size of the Python heap(s) but I'm not sure at all how good as
an indication is that (what about different OSes?).

Anyway, would it be much simpler (for the Python programmer) and much
faster (at run-time) to surface this functionality in the sys module?

Adrian.



From fredrik at pythonware.com  Mon Sep 25 08:41:37 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 14:41:37 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<ef5lb9$h1k$2@lust.ihug.co.nz><ef5ncc$uus$1@news.albasani.net><mailman.524.1159095305.10491.python-list@python.org>
	<ef7v0e$mn8$2@lust.ihug.co.nz>
Message-ID: <ef8iq1$e1q$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

>> Georg Brandl wrote:
>>
>>> A function is broken if its implementation doesn't match the
>>> documentation.
>>
>> or if it doesn't match the designer's intent.  cgi.escape is old enough
>> that we would have noticed that, by now...
>
> _We_ certainly have noticed it.

you're not the designer, you're just some random guy who thinks that if you
don't understand something at first, it has to be changed, even if it that change
would break things for others.  maybe you haven't done software long enough
to understand that software works better if you use it the way it was intended
to be used, but that's no excuse for being stupid.

</F> 





From anthra.norell at vtxmail.ch  Tue Sep 26 05:50:57 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Tue, 26 Sep 2006 11:50:57 +0200
Subject: I need some help with a regexp please
In-Reply-To: <5w2Sg.12714$v%4.12201@newsread1.news.pas.earthlink.net>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>	<1159205101.539477.109910@m7g2000cwm.googlegroups.com>
	<5w2Sg.12714$v%4.12201@newsread1.news.pas.earthlink.net>
Message-ID: <4518F801.4040708@vtxmail.ch>

Dennis Lee Bieber wrote:
> On 25 Sep 2006 10:25:01 -0700, "codefire" <tony.bedford at gmail.com>
> declaimed the following in comp.lang.python:
>
>   
>> Yes, I didn't make it clear in my original post - the purpose of the
>> code was to learn something about regexps (I only started coding Python
>> last week). In terms of learning "a little more" the example was
>> successful. However, creating a full email validator is way beyond me -
>> the rules are far too complex!! :)
>>     
>
> 	I've been doing small things in Python for over a decade now
> (starting with the Amiga port)...
>
> 	I still don't touch regular expressions... They may be fast, but to
> me they are just as much line noise as PERL... I can usually code a
> partial "parser" faster than try to figure out an RE.
>   
If I may add another thought along the same line: regular expressions 
seem to tend towards an art form, or an intellectual game. Many 
discussions revolving around regular expressions convey the impression 
that the challenge being pursued is finding a magic formula much more 
than solving a problem. In addition there seems to exist some code of 
honor which dictates that the magic formula must consist of one single 
expression that does it all. I suspect that the complexity of one single 
expression grows somehow exponentially with the number of 
functionalities it has to perform and at some point enters a gray zone 
of impending conceptual intractability where the quest for the magic 
formula becomes particularly fascinating. I also suspect that some 
problems are impossible to solve with a single expression and that no 
test of intractability exists other than giving up after so many hours 
of trying.
    With reference to the OP's question, what speaks against passing his 
texts through several simple expressions in succession? Speed of 
execution? Hardly. The speed penalty would not be perceptible. 
Conversely, in favor of multiple expressions speaks that they can be 
kept simple and that the performance of the entire set can be 
incrementally improved by adding another simple expression whenever an 
unexpected contingency occurs, as they may occur at any time with 
informal systems. One may not win a coding contest this way, but saving 
time isn't bad either, or is even better.

Frederic



From bignose+hates-spam at benfinney.id.au  Sat Sep 30 03:46:55 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 30 Sep 2006 17:46:55 +1000
Subject: why logging re-raise my exception and can't be caught?
References: <1159601583.256548.193730@b28g2000cwb.googlegroups.com>
Message-ID: <87ac4hkd8w.fsf@benfinney.id.au>

"daniel" <daniel.huangfei at gmail.com> writes:

> I'm expecting the exception to be caught silently, and print the msg to
> some place

Then why not use logging.error() ?

<URL:http://docs.python.org/lib/module-logging>
=====
error(msg[, *args[, **kwargs]])
    Logs a message with level ERROR on the root logger. The arguments
    are interpreted as for debug().

exception(msg[, *args])
    Logs a message with level ERROR on the root logger. The arguments
    are interpreted as for debug(). Exception info is added to the
    logging message. This function should only be called from an
    exception handler.
=====

A 'try ... except' statement is not an exception handler. So, if you
want to log the fact that an error occurred, it seems logging.error()
is the correct choice.

-- 
 \        "I have one rule to live by: Don't make it worse."  -- Hazel |
  `\                                                          Woodcock |
_o__)                                                                  |
Ben Finney



From duncan.booth at invalid.invalid  Tue Sep 19 08:56:46 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 19 Sep 2006 12:56:46 GMT
Subject: Compile AST to bytecode?
References: <1158668372.706298.123280@i3g2000cwc.googlegroups.com>
Message-ID: <Xns98438DE1018EEduncanbooth@127.0.0.1>

"Rob De Almeida" <ralmeida at gmail.com> wrote:

> I would like to compile an AST to bytecode, so I can eval it later. I
> tried using parse.compileast, but it fails:
> 
>>>> import compiler, parser
>>>> ast = compiler.parse("42")
>>>> parser.compileast(ast)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: compilest() argument 1 must be parser.st, not instance
> 
> Any hints?

There are two distinct varieties of AST in the Python standard library. 
compiler and parser ast objects are not compatible.

I'm not sure there are any properly documented functions for converting an 
AST to a code object, so your best bet may be to examine what a 
pycodegen class like Expression or Module actually does.

>>> import compiler
>>> def ast_to_evalcode(ast):
	return compiler.pycodegen.ExpressionCodeGenerator(ast).getCode()

>>> def parse_to_ast(src):
	return compiler.pycodegen.Expression(src, "<string>")._get_tree()

>>> ast = parse_to_ast("40+2")
>>> ast
Expression(Add((Const(40), Const(2))))
>>> ast_to_evalcode(ast)
<code object <expression> at 0122D848, file "<string>", line -1>
>>> eval(_)
42


From bmbeck at gmail.com  Fri Sep 15 16:26:49 2006
From: bmbeck at gmail.com (Brandon)
Date: 15 Sep 2006 13:26:49 -0700
Subject: Exposing Excel as a Webservice
In-Reply-To: <1158341114.762124.194320@d34g2000cwd.googlegroups.com>
References: <1158269224.831066.73460@m73g2000cwd.googlegroups.com>
	<1158341114.762124.194320@d34g2000cwd.googlegroups.com>
Message-ID: <1158352009.667682.75370@b28g2000cwb.googlegroups.com>

Thanks for the reply.

Unfortunately I cannot use a different format for the data since I'm
really using Excel as a calculation engine.  I don't own the authoring
of these spreadsheets or even the data inside of them so I cannot
change the format.  The spreadsheets also are complicated enough and
change frequently enough that it's not feasible for me to try to
extract the logic and data inside of them into a different calculation
engine (unless there's some existing tool which will do this for me?).
My program is just one user of the spreadsheets among hundreds of human
users.  Unfortunately what's easy for the humans is always going to win
out over what's easy for my program.

My concern with my option 2) is that I appear to be experiencing some
level of contamination between calls that I can't resolve.  It's not
truly transactional in that a call into the system guarantees that it
will leave everything how it found it.  That's sort of why I thought up
option 3).  Let the OS help me somewhat to clean up.  I strongly
suspect that my option 2) is to some extent at the mercy of the python
garbage collector.  I'm not positive of that though.


Thanks,
Brandon



From filippo2991 at virgilio.it  Sat Sep  2 12:21:52 2006
From: filippo2991 at virgilio.it (filippo)
Date: 2 Sep 2006 09:21:52 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <edaf0s$oc3$1@newsreader2.netcologne.de>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
	<edaf0s$oc3$1@newsreader2.netcologne.de>
Message-ID: <1157214112.691313.282700@p79g2000cwp.googlegroups.com>

Claudio Grondi ha scritto:

(megasnip)

I caught your point of view. I start reading a book on wxpython to
understand if it can help to solve my problems. At the same time I will
port my program to Python/Tk in order to have a faster first beta
release.

Thanks for your explanation.

Filippo



From cfbolz at gmx.de  Fri Sep 29 08:34:17 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Fri, 29 Sep 2006 14:34:17 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <451CD389.3010800@jessikat.plus.net>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
Message-ID: <451D12C9.2020002@gmx.de>

Robin Becker wrote:
> Larry Hastings wrote:
> ______
>> THE PATCH
>>
>> The core concept: adding two strings together no longer returns a pure
>> "string" object.  Instead, it returns a "string concatenation" object
>> which holds references to the two strings but does not actually
>> concatenate
>> them... yet.  The strings are concatenated only when someone requests
>> the
>> string's value, at which point it allocates all the space it needs and
>> renders the concatenated string all at once.
>>
>> More to the point, if you add multiple strings together (a + b + c),
>> it *doesn't* compute the intermediate strings (a + b).
>>
>> Upsides to this approach:
> ........
>
> wouldn't this approach apply to other additions eg list+list seq+seq etc
> etc.

no, I think it depends on strings being immutable. If you do list1 +
list2 that way and list1 is mutated then the resulting list would be
changed too.

> I suppose the utility of such an approach depends on the frequency with
> which multiple strings/lists/sequences etc are added together in real
code.

I think there are quite a lot of string additions around, it's just that
people get told to use join all the time, so they are not written using "+".

Cheers,

Carl Friedrich



From fakeaddress at nowhere.org  Tue Sep  5 11:28:13 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Tue, 05 Sep 2006 15:28:13 GMT
Subject: threading support in python
In-Reply-To: <7xy7sziego.fsf@ruckus.brouhaha.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
Message-ID: <hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>

Paul Rubin wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
>> If it's read/write data or you're not on a Unix platform, you can use
>> shared memory to shared it between many processes.
>>
>> Threads are way overused in modern multiexecution programming.  The
>> decision on whether to use processes or threads should come down to
>> whether you want to share everything, or whether you have specific
>> pieces of data you want to share.
> 
> Shared memory means there's a byte vector (the shared memory region)
> accessible to multiple processes.  The processes don't use the same
> machine addresses to reference the vector.  Any data structures
> (e.g. those containing pointers) shared between the processes have to
> be marshalled in and out of the byte vector instead of being accessed
> normally.

I think it's even worse. The standard Python library offers
shared memory, but not cross-process locks. Sharing read-write
memory looks like an automatic race condition. I guess one could
implement one of the primitive spin-lock based mutual exclusion
algorithms, but I think even that would depend on non-portable
assumptions about cache consistency.


-- 
--Bryan


From nick at craig-wood.com  Fri Sep  8 06:30:04 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Fri, 08 Sep 2006 05:30:04 -0500
Subject: xmingw and f2py
References: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>
Message-ID: <slrneg2h90.d48.nick@irishsea.home.craig-wood.com>

Flavio <fccoelho at gmail.com> wrote:
>  has anyone tried to build extensions for win32 on Linux using
>  xmingw?

I don't know about xmingw, but we use mingw on linux to compile stuff
for windows all the time.  (We use the mingw package under debian)

We build extensions using mingw but linked to the link library of the
official python2.4 build.

Here are some instructions which you'll need to adapt to your setup

/misc/windows is a smb mounted windows machine

# Linking with the distributed python
#
# http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/software/python/cygwin.html
#
# On a windows machine
# install the latest windows python (2.4.3.msi) from www.python.org
# Copy the header files into the mingw installation
cp -av /misc/windows/Python24/include /usr/i586-mingw32msvc/include/python2.4
# Download pexports from here
# http://www.emmestech.com/software/cygwin/pexports-0.43/download_pexports.html
# unpack pexports.exe
unzip pexports-0.43.zip
# Fetch python dll from the windows machine
cp -av /misc/windows/WINNT/system32/python24.dll .
# Extract the exported symbols
wine pexports python24.dll > python24.def
# Create the link library
/usr/i586-mingw32msvc/bin/dlltool --dllname python24.dll --def python24.def --output-lib libpython2.4.a
# Move the files into the correct place
mv -i python24.dll python24.def libpython2.4.a /usr/i586-mingw32msvc/lib/

After that lot you can build python extensions with mingw under linux,
using -lpython2.4

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From wildemar at freakmail.de  Thu Sep 21 01:43:44 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 07:43:44 +0200
Subject: naming objects from string
In-Reply-To: <1158815689.478403.264420@d34g2000cwd.googlegroups.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>	<1158813236.493366.122600@k70g2000cwa.googlegroups.com>	<45121a25$0$75030$14726298@news.sunsite.dk>	<mailman.375.1158815161.10491.python-list@python.org>
	<1158815689.478403.264420@d34g2000cwd.googlegroups.com>
Message-ID: <45122690.1030407@freakmail.de>

manstey wrote:
> Hi,
> 
> thanks for the suggestions. this is my problem:
> 
> I have a metadata file that another user defines, and I don't know
> their structure in advance. They might have 300+ structures. the
> metadata defines the name and the tuple-like structure when read by
> python.
> 
> my program reads in the metadata file and then generates python tuples
> corresponding to their structures.
> 
> so they might provide a list of names, like 'bob','john','pete', with 3
> structures per name, such as 'apple','orange','red' and I need 9 tuples
> in my code to store their data:
> 
> bob_apple=()
> bob_orange=()
> ..
> pete_red=()
> 
> I then populate the 9 tuples with data they provide in a separate file,
> and the filled tuples are then validated against the metadata to make
> sure they are isomorphic.
> 
> Is this clear?
Erm, not exactly but I think I get it.

Note that creating empty tuples will mean that they will always be 
empty. They are immutable, basically meaning that you can not change 
them after they are created. If you want to create empty data that you 
want to fill later on, use lists. Or (which might be more convenient) 
put in the data right away).

Generally, since you do not know the names ('bob', 'john', etc.) and the 
structures in advance, the best way to store them is in a *variable*.
Here I would suggest dictionaries again. Let me write an example in 
pseudo python:

people = {}  # data dict
# lets suppose the data from your file is a list of tuples like:
# [('bob',('orange', 'apple', 'red')), ...]
# (I didnt quite get how your data is organized)
for name, structure in list_of_names_from_file:
     people[name] = {}  # make a new dict for the 'structures'
     for item in structure:
         people[name][item] = () # empty tuple
         # instead of an empty tuple you could fill in your data
         # right here, which would save you the extra keyboard mileage

Does that make sense in the context of your application?

wildemar


From tim at tdw.net  Fri Sep 29 12:39:45 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 29 Sep 2006 17:39:45 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <W53645725.803.1323.1@mx-extra>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<mailman.949.1159543590.10491.python-list@python.org>
	<W53645725.803.1323.1@mx-extra>
Message-ID: <9afea2ac0609290939t1a61bd79vce1231b88d58e8b6@mail.gmail.com>

On 29/09/06, Sybren Stuvel <sybrenUSE at yourthirdtower.com.imagination> wrote:
> Checking for a lock, and later acquiring the lock, seems non-atomic to
> me. It's easier to simply create a lock directory. If it fails, the
> dir already exists and someone else holds the lock. If it succeeds,
> the lock is immediately yours, since you just created the directory.
> This is atomic on most OSses AFAIK.

My reply was in response to a post that mentioned a known problem with
this,  what happens when the previously running program doesn't exit
gracefully, and leaves the directory in place ??

If the directory creation fails (because it already exists), it
doesn't mean there is another instance of the program running, it
means that the directory hasn't yet been deleted by its creator.

   :)


From ksreddy25 at gmail.com  Fri Sep 29 07:51:33 2006
From: ksreddy25 at gmail.com (NRI Events)
Date: 29 Sep 2006 04:51:33 -0700
Subject: Hai Friends
Message-ID: <1159530693.825330.120910@m73g2000cwd.googlegroups.com>

Hello Everybody,

Happy Navaratri & Happy Dasara

I found excellent yellow pages about
Indian Temples in USA.

http://www.nrievents.com/indiantemples.htm

And also info about latest NRI News and
NRI Events and NRI services.


Regards,



From ilias at lazaridis.com  Sun Sep 24 16:40:43 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 24 Sep 2006 13:40:43 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <mailman.542.1159129807.10491.python-list@python.org>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
Message-ID: <1159130442.913233.276910@k70g2000cwa.googlegroups.com>

Steve Holden wrote:
> Ilias Lazaridis wrote:
> > Ilias Lazaridis wrote:
> >
> >>IDLE has an output format like this:
> >>
> >> >>> object
> >><type 'object'>
> >> >>> type
> >><type 'type'>
> >> >>> object.__class__
> >><type 'type'>
> >> >>> object.__bases__
> >>
> >>How can I customize it to become like that:
> >>
> >> >>> object
> >>     <type 'object'>
> >> >>> type
> >>     <type 'type'>
> >> >>> object.__class__
> >>     <type 'type'>
> >> >>> object.__bases__
> >>
> >>or that:
> >>
> >> >>> object
> >>   : <type 'object'>
> >> >>> type
> >>   : <type 'type'>
> >> >>> object.__class__
> >>   : <type 'type'>
> >> >>> object.__bases__
> >>
> >>(preferably without modifying code)
> >
> > I assume this is not possible.
> >
> > I am wondering that other users are not annoyed by this reduced
> > readability.
> >
> And I am wondering at your continual surprise when the rest of the world
> fails to share your perceptions. Doesn't this carry *any* information?

not the rest of the world, but the rest of the python community.

That's a big difference.

So it looks that I have to code to change the output format.

Reminds me 'good old days'.

> > anyway.
> > 
> Indeed.



From steve at holdenweb.com  Mon Sep 11 16:37:07 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 21:37:07 +0100
Subject: Running python from a usb drive
In-Reply-To: <ee4fm8$2elh$1@ulysses.news.tiscali.de>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
Message-ID: <ee4hc9$gd6$1@sea.gmane.org>

Uwe Hoffmann wrote:
> cjl schrieb:
> 
> 
>>
>>I do set pythonpath, see above.
>>
> 
> is pythonpath really case insensitive on windows ?

Only because the Windows filesystem implements case-insensitive 
semantics. This is nothing to do with Python:

C:\Steve\Projects\Python\dbimp>dir DB.py
  Volume in drive C has no label.
  Volume Serial Number is 9CA8-2A02

  Directory of C:\Steve\Projects\Python\dbimp

01/19/2005  06:03 PM               136 db.py
                1 File(s)            136 bytes
                0 Dir(s)  15,908,880,384 bytes free

C:\Steve\Projects\Python\dbimp>dir db.py
  Volume in drive C has no label.
  Volume Serial Number is 9CA8-2A02

  Directory of C:\Steve\Projects\Python\dbimp

01/19/2005  06:03 PM               136 db.py
                1 File(s)            136 bytes
                0 Dir(s)  15,908,880,384 bytes free


regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ptmcg at austin.rr._bogus_.com  Sun Sep 17 23:00:41 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 18 Sep 2006 03:00:41 GMT
Subject: tcl list to python list?
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
	<gv51u3-4j4.ln1@lairds.us>
Message-ID: <tZnPg.4850$vD2.292@tornado.texas.rr.com>

"Cameron Laird" <claird at lairds.us> wrote in message 
news:gv51u3-4j4.ln1 at lairds.us...
> In article <1158459542.693284.98090 at h48g2000cwc.googlegroups.com>,
> <jerry.levan at gmail.com> wrote:
>>Hi,
>>
>>I have a file that contains a "tcl" list stored as a string.  The list
>>members are
>>sql commands ex:
>> { begin { select * from foo
>>                where baz='whatever'}
>>  {select * from gooble } end
>>  { insert into bar values('Tom', 25) } }
>>
>>I would like to parse the tcl list into a python list...
>>
>>Any suggestions ( I am running Tkinter...)
> .
> .
> .
> No correct solution's going to be as elegant as I suspect you imagine.
> Here's an example of what's required:
>
>  # If you try anything you suspect is simpler, you're going to have to
>  # teach Python about Tcl treatment of whitespace, or teach Tcl how
>  # Python quotes, or ...
>
>  import Tkinter
>  tcl_list = """{ begin { select * from foo
>                  where baz='whatever'}
>    {select * from gooble } end
>    { insert into bar values('Tom', 25) } }"""
>
>      # Collect the Python list here.
>  result = []
>      # Create a single Tcl interpretive context for all the work.
>  tk_instance = Tkinter.Tk().tk.eval
>      # Everything Tcl returns is a string; make this value an integer.
>  tcl_list_length = int(tk_instance(
>             "set tcl_list %s; llength $tcl_list" % tcl_list))
>
>      # With all the set-up done, simply loop over the elements.
>  for counter in range(tcl_list_length):
>          # Ask Tcl for each successive list item.
>      result.append(tk_instance("lindex $tcl_list %d" % counter))
>
>  print result
>
> The output is
>  ['begin', " select * from foo\n                where baz='whatever'", 
> 'select * from gooble ', 'end', " insert into bar values('Tom', 25) "]

Elegant-shmelegant, looks like it gets the job done, and neatly too.  I had 
no idea that you can invoke Tcl so easily from Python.

Why is your indentation so weird though?  The comments actually make your 
solution harder to read.  If I may be so forward as to edit for readability 
(I think a list comprehension to build the actual list is easier to follow 
than the for loop with the strangely-indented comments):

# Create a single Tcl interpretive context for all the work.
tk_instance = Tkinter.Tk().tk.eval

# define list in Tcl context, and extract number of elements
tk_instance("set tcl_list %s" % tcl_list)
numItems = int(tk_instance("llength $tcl_list"))

# build Python list indexing by each item
result = [ tk_instance("lindex $tcl_list %d" % i)
            for i in range(numItems)]


-- Paul




From sjmachin at lexicon.net  Sun Sep 10 00:52:09 2006
From: sjmachin at lexicon.net (John Machin)
Date: 9 Sep 2006 21:52:09 -0700
Subject: pyExcelerator question - dates map to floats?
References: <17667.36008.986704.400318@montanaro.dyndns.org>
	<mailman.225.1157861240.5279.python-list@python.org>
Message-ID: <1157863929.201427.317320@m73g2000cwd.googlegroups.com>

skip at pobox.com wrote:
> skip> Doing a little date math I come up with a base date of
>     skip> approximately (though not quite) 1900-01-01:
>     ...
>
> Reading the code in BIFFRecords.py I saw this docstring:
>
>         This record specifies the base date for displaying date values. All
>         dates are stored as count of days past this base date. In
>         BIFF2-BIFF4 this record is part of the Calculation Settings Block.
>         In BIFF5-BIFF8 it is stored in the Workbook Globals Substream.
>
>         Record DATEMODE, BIFF2-BIFF8:
>
>         Offset  Size    Contents
>         0       2       0 = Base is 1899-Dec-31 (the cell = 1 represents 1900-Jan-01)
>                         1 = Base is 1904-Jan-01 (the cell = 1 represents 1904-Jan-02)
>
> Shifting my base date from 1900-01-01 to 1899-12-31 leaves me off by one.

You have found Microsoft's "What do you mean, 1900 was not a leap
year?" bug.

> I take it then that "count of days past this base date" must include that
> date.  It's too late for me to do any more poking around.  Does anyone know
> if I might get date floats which are offset from 1904-01-01 (I think that
> was the traditional Mac start-of-epoch) or are they normalized to all be
> offsets from 1899-12-31?
>
> I noticed that there are two items on the pyExcelerator to-do list.  Number
> one is "documentation".

Check out my "xlrd" package.
http://cheeseshop.python.org/pypi/xlrd/0.5.2

(1) It has docs, including an extensive rant about Excel dates which
will answer all of your above questions.

(2) It has an helper functions for converting between Excel dates and
tuples (which can then be converted into datetime, time, and mxDateTime
dates).

Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import xlrd
>>> xlrd.xldate_as_tuple(38973.0, datemode=0)
(2006, 9, 13, 0, 0, 0)
>>>

(3) It tracks the "number formats" applied to floats, and automatically
classifies them as "number" and "date".

HTH,
John



From duncan.booth at invalid.invalid  Thu Sep 28 04:10:41 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 28 Sep 2006 08:10:41 GMT
Subject: Difference between two dates in seconds
References: <mailman.861.1159421384.10491.python-list@python.org>
	<wqKSg.100459$qV7.1377329@phobos.telenet-ops.be>
Message-ID: <Xns984C5D603293Eduncanbooth@127.0.0.1>

flupke <flupke at nonexistingdomain.com> wrote:

> Using 86400 instead of (24*60*60) is faster

s/is/was/

upgrade to Python 2.5


From steven.bethard at gmail.com  Wed Sep 13 13:06:03 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 13 Sep 2006 11:06:03 -0600
Subject: pickle and instancemethod objects
In-Reply-To: <450829d9$0$18647$9b622d9e@news.freenet.de>
References: <FY6dnUU7mqlhg5XYnZ2dnUVZ_tKdnZ2d@comcast.com>
	<450829d9$0$18647$9b622d9e@news.freenet.de>
Message-ID: <x6ydnQjiVsDnp5XYnZ2dnUVZ_t6dnZ2d@comcast.com>

Martin v. L?wis wrote:
> Steven Bethard schrieb:
>> Does this approach seem sound?  Am I going to run into some weird
>> problems doing it this way?
> 
> It's good, but I think rebuilding the object through
> new.instancemethod should be even better.
> 
> py> class A:
> ...   def f(self):print "A"
> ...
> py> class B(A):
> ...   def f(self):print "B"
> ...
> py> b=B()
> py> b.f
> <bound method B.f of <__main__.B instance at 0xa7d728cc>>
> py> x = new.instancemethod(A.__dict__['f'], b, A)
> py> x
> <bound method A.f of <__main__.B instance at 0xa7d728cc>>
> py> x()
> A
> py> b.f()
> B
> py> x.im_func.__name__,x.im_class,x.im_self
> ('f', <class __main__.A at 0xa7d7002c>, <__main__.B instance at 0xa7d728cc>)
> 
> On unpickling x, you'ld get x.(B.f), not x.(A.f) with your
> approach.
> 
> Not sure it matters much.

Probably doesn't matter for my particular use, but it certainly wouldn't 
hurt to do it the careful way.  Thanks.

Is new.instancemethod basically equivalent to calling __get__?  That is, 
would the following two unpickle_instancemethod functions do the same thing?

     def unpickle_instancemethod(func_name, cls, obj):
         return cls.__dict__[func_name].__get__(obj, cls)

     def unpickle_instancemethod(func_name, cls, obj):
         return new.instancemethod(cls.__dict__[func_name], obj, cls)

Thanks again,

STeVe


From kbk at shore.net  Thu Sep 14 22:59:08 2006
From: kbk at shore.net (Kurt B. Kaiser)
Date: Thu, 14 Sep 2006 22:59:08 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200609150259.k8F2x8cT031149@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  416 open ( +3) /  3408 closed ( +1) /  3824 total ( +4)
Bugs    :  898 open ( +1) /  6180 closed (+13) /  7078 total (+14)
RFE     :  234 open ( +0) /   238 closed ( +0) /   472 total ( +0)

New / Reopened Patches
______________________

email parser incorrectly breaks headers with a CRLF at 8192  (2006-09-10)
       http://python.org/sf/1555570  opened by  Tony Meyer

datetime's strftime limits strings to 127 chars  (2006-09-12)
       http://python.org/sf/1557390  opened by  Eric V. Smith

Add RLIMIT_SBSIZE to resource module  (2006-09-12)
       http://python.org/sf/1557515  opened by  Eric Huss

missing imports ctypes in documentation examples  (2006-09-13)
       http://python.org/sf/1557890  opened by  Daniele Varrazzo

Patches Closed
______________

UserDict New Style  (2006-09-08)
       http://python.org/sf/1555097  closed by  rhettinger

New / Reopened Bugs
___________________

Bug in the match function  (2006-09-09)
CLOSED http://python.org/sf/1555496  opened by  wojtekwu

Please include pliblist for all plattforms  (2006-09-09)
       http://python.org/sf/1555501  opened by  Guido Guenther

sgmllib should allow angle brackets in quoted values  (2006-06-11)
       http://python.org/sf/1504333  reopened by  nnorwitz

Move fpectl elsewhere in library reference  (2006-09-11)
       http://python.org/sf/1556261  opened by  Michael Hoffman

datetime's strftime limits strings to 127 chars  (2006-09-11)
       http://python.org/sf/1556784  opened by  Eric V. Smith

datetime's strftime limits strings to 127 chars  (2006-09-12)
CLOSED http://python.org/sf/1557037  opened by  Eric V. Smith

typo in encoding name in email package  (2006-09-12)
       http://python.org/sf/1556895  opened by  Guillaume Rousse

2.5c1 Core dump during 64-bit make on Solaris 9 Sparc  (2006-09-12)
       http://python.org/sf/1557490  opened by  Tony Bigbee

xlc 6 does not like bufferobject.c line22  (2006-09-13)
       http://python.org/sf/1557983  opened by  prueba uno

apache2 - mod_python - python2.4 core dump  (2006-09-14)
CLOSED http://python.org/sf/1558223  opened by  ThurnerRupert

Tru64 make install failure  (2006-09-14)
       http://python.org/sf/1558802  opened by  Ralf W. Grosse-Kunstleve

2.5c2 macosx installer aborts during "GUI Applications"  (2006-09-14)
       http://python.org/sf/1558983  opened by  Evan

Bugs Closed
___________

datetime.datetime.now() mangles tzinfo  (2006-09-06)
       http://python.org/sf/1553577  closed by  nnorwitz

__unicode__ breaks for exception class objects  (2006-09-03)
       http://python.org/sf/1551432  closed by  bcannon

Bug in the match function  (2006-09-09)
       http://python.org/sf/1555496  closed by  tim_one

Recently introduced sgmllib regexp bug hangs Python  (2006-08-16)
       http://python.org/sf/1541697  closed by  nnorwitz

logging.handlers.RotatingFileHandler - inconsistent mode  (2006-09-06)
       http://python.org/sf/1553496  closed by  vsajip

datetime's strftime limits strings to 127 chars  (2006-09-12)
       http://python.org/sf/1557037  closed by  ericvsmith

apache2 - mod_python - python2.4 core dump  (2006-09-13)
       http://python.org/sf/1558223  closed by  nnorwitz



From anthra.norell at vtxmail.ch  Wed Sep 13 10:40:04 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Wed, 13 Sep 2006 16:40:04 +0200
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158132916.302348.189580@h48g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>	<mailman.372.1158079916.5279.python-list@python.org>
	<1158132916.302348.189580@h48g2000cwc.googlegroups.com>
Message-ID: <45081844.60904@vtxmail.ch>

gatti at dsdata.it wrote:
> Frederic Rentsch wrote:
>
>
>   
>>    If you need regexes, why not just reverse-sort your expressions? This
>> seems a lot easier and faster than writing another regex compiler.
>> Reverse-sorting places the longer ones ahead of the shorter ones.
>>     
>
> Unfortunately, not all regular expressions have a fixed match length.
> Which is the longest of, for example, /(abc)?def/ and /(def)?ghi/
> depends on the input. 
>
> Lorenzo Gatti
>
>   
Very true! Funny you should remind me, considering that I spent quite 
some time upgrading SE to allow regular expressions. Version 1 didn't 
and could resolve precedence at compile time. Version 2 resolves 
precedence at runtime by length of the matches and should function 
correctly in this respect, although it might not function fast enough 
for speed-critical applications. But then there is in general a 
trade-off between convenience and speed.


Frederic



From richardjones at optushome.com.au  Wed Sep 13 01:07:44 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Wed, 13 Sep 2006 15:07:44 +1000
Subject: What's more pythonic?
References: <pan.2006.09.13.04.08.11.294080@dcs.nac.uci.edu>
	<7xr6ygo12i.fsf@ruckus.brouhaha.com>
Message-ID: <45079220$0$11968$afc38c87@news.optusnet.com.au>

Paul Rubin wrote:

> Dan Stromberg <strombrg at dcs.nac.uci.edu> writes:
>> def __cmp__(self, other):
>> if self.a < other.a:
>> return -1
>> elif self.a > other.a:
>> return 1
>> else:
>> return 0
> 
> I think I'd have written
> 
>            return cmp(self.a, other.a)

/me agrees


From petr at tpc.cz  Wed Sep 20 13:40:55 2006
From: petr at tpc.cz (Petr Jakes)
Date: 20 Sep 2006 10:40:55 -0700
Subject: unicode mystery/problem
Message-ID: <1158774055.273842.24200@m7g2000cwm.googlegroups.com>

Hi,
I am using Python 2.4.3 on Fedora Core4 and  "Eric3" Python IDE
.
Below mentioned code works fine in the Eric3 environment. While trying
to start it from the command line, it returns:

Traceback (most recent call last):
  File "pokus_1.py", line 5, in ?
    print str(a)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xc1' in
position 6: ordinal not in range(128)

========== 8< =============
#!/usr/bin python
# -*- Encoding: utf_8 -*-

a= u'DISKOV\xc1 POLE'
print a
print str(a)
========== 8< =============

Even it looks strange, I have to use str(a) syntax even I know the "a"
variable is a string.
I am trying to use ChartDirector for Python (charts for Python) and the
method "layer.addDataSet()" needs above mentioned syntax otherwise it
returns an Error.

layer.addDataSet(data, colour, str(dataName))
 
Thanks for your comments

Petr Jakes



From fredrik at pythonware.com  Fri Sep 29 13:13:56 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 19:13:56 +0200
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <7xr6xuy580.fsf@ruckus.brouhaha.com>
References: <451D25A3.7010803@googlemail.com>
	<R53637327.467.1352.3@mx-extra>	<mailman.949.1159543590.10491.python-list@python.org>	<W53645725.803.1323.1@mx-extra>	<mailman.957.1159547987.10491.python-list@python.org>	<R53646951.569.1564.1@mx-extra>	<mailman.960.1159549187.10491.python-list@python.org>
	<7xr6xuy580.fsf@ruckus.brouhaha.com>
Message-ID: <efjk8i$c93$2@sea.gmane.org>

Paul Rubin wrote:

>> That's the same kind of principle as my posted snippet,  it doesn't
>> rely on the file's presence or absence as such.  It only cares when
>> the file exists *and* is held open by another process.    When the
>> process exits,  the lock ends without needing to clean up.
>>
>> It works on Windows, but that doesn't help the OP :)
> 
> Huh?  Fcntl is on linux.

I'm pretty sure "it" in tim's post refers to the his snippet, not yours.

</F>



From smcg4191zz at friizz.RimoovAllZZs.com  Wed Sep 13 02:38:20 2006
From: smcg4191zz at friizz.RimoovAllZZs.com (Stuart McGraw)
Date: Wed, 13 Sep 2006 00:38:20 -0600
Subject: elementtree: line numbers and iterparse
References: <12gesf81fprdmef@corp.supernews.com>
	<mailman.1.1158124100.10491.python-list@python.org>
Message-ID: <12gf9r3sl7hjnd4@corp.supernews.com>


"Fredrik Lundh" <fredrik at pythonware.com> wrote in message news:mailman.1.1158124100.10491.python-list at python.org...
> Stuart McGraw wrote:
> > Now I find i need to get and save the input file line 
> > number of each node.  Googling turned up a way 
> > to do it by subclassing FancyTreeBuilder,
> > (http://groups.google.com/group/comp.lang.python/msg/45f5313409553b4b?hl=en&)
> > but that tries to read everything at once.
> > 
> > Is there a way to do something similiar with iterparse()?
> 
> something like this could work:
> ...snip...

Indeed it does.  Many thanks!



From steve at holdenweb.com  Sun Sep  3 07:53:09 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 03 Sep 2006 12:53:09 +0100
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <1157279179.541586.236400@p79g2000cwp.googlegroups.com>
References: <edcrms$auj$1@news.uit.no>	<slrnefk26s.5pt.sybrenUSE@schuimige.stuvel.eu>	<ede4g7$tbv$1@news.uit.no>
	<1157279179.541586.236400@p79g2000cwp.googlegroups.com>
Message-ID: <44FAC225.2040504@holdenweb.com>

keegan.csmith at gmail.com wrote:
>>I've read about SO_REUSEADDR. As far as I understand, this is what
>>SO_REUSEADDR is for:
> 
> ....
> 
>>I've tried setting this option, but could not see any notable changes...
> 
> 
> I was having a similiar problem as you, where as soon as my program
> exited, it would get started up again, but could not bind to the same
> address.
> So i added the follow straight after I create my server object:
> server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
> 
> And it worked. Note that my program was running on Linux, so this might
> be a windows issue.
> 
... and note also that your program was apprently a server, while the OP 
was reporting an error on a client program that presumably asks for an 
ephemeral port rather than a specifically-numbered one.

Since there are roughly 64,000 ports, the real question seems to be why 
his client runs out after about 4,000.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ptmcg at austin.rr._bogus_.com  Wed Sep 13 10:28:50 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Wed, 13 Sep 2006 14:28:50 GMT
Subject: table (ascii text) lin ayout recognition
References: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
	<8RPNg.748$TV3.408@newssvr21.news.prodigy.com>
Message-ID: <CAUNg.807$vD2.98@tornado.texas.rr.com>

"James Stroud" <jstroud at mbi.ucla.edu> wrote in message 
news:8RPNg.748$TV3.408 at newssvr21.news.prodigy.com...
> vbfoobar at gmail.com wrote:
>> Hello,
>>
>> I am looking for python code useful to process
>> tables that are in ASCII text. The code must
>> determine where are the columns (fields).
>> Concerned tables for my application are various,
>> but their columns are not very complicated
>> to locate for a human, because even
>> when ignoring the semantic of  words,
>> our eyes see vertical alignments
>>
>> Here is a sample table (must be viewed
>> with fixed-width font to see alignments):
>> =================================
>>
>> 44544      ipod          apple     black         102
>> GFGFHHF-12 unknown thing bizar     brick mortar  tbc
>> 45fjk      do not know   + is less               biac
>>            disk          seagate   250GB         130
>> 5G_gff                   tbd       tbd
>> gjgh88hgg  media record  a and b                 12
>> hjj        foo           bar       hop           zip
>> hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
>> qdsd       zert                    nope          nope
>>
>> =================================
>>
>> I want the python code that builds a representation
>> of this table (for exemple a list of lists, where each list
>> represents a table line, each element of the list
>> being a field value).
>>
>> Any hints?
>> thanks
>>
>
> As promised. I call this the "cast a shadow" algorithm for table 
> discovery. This is about as obfuscated as I could make it. It will be up 
> to you to explain it to your teacher ;-)
>

James -

I used your same algorithm, but I guess I used more brute force (and didn't 
use pyparsing, either!).

-- Paul


data = """\
44544      ipod          apple     black         102
GFGFHHF-12 unknown thing bizar     brick mortar  tbc
45fjk      do not know   + is less               biac
           disk          seagate   250GB         130
5G_gff                   tbd       tbd
gjgh88hgg  media record  a and b                 12
hjj        foo           bar       hop           zip
hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
qdsd       zert                    nope          nope""".split('\n')

# find rightmost space characters delimiting text columns
spaceCols = set(range(max(map(len, data)))) - \
            set( [col for line in data
                      for col,c in enumerate(line.expandtabs())
                      if not c.isspace() ] )
spaceCols -= set( [c for c in spaceCols if c+1 in spaceCols ] )

# convert to sorted list of leading col characters
spaceCols = map(lambda x:x+1, sorted(list(spaceCols)))

# get and pretty-print data fields
dataFields = \
    [ [line.expandtabs()[start:stop] for (start,stop) in
        zip([0]+spaceCols,spaceCols+[None])] for line in data ]
import pprint
pprint.pprint( dataFields )

Gives:

[['44544      ', 'ipod          ', 'apple     ', 'black         ', '102'],
 ['GFGFHHF-12 ', 'unknown thing ', 'bizar     ', 'brick mortar  ', 'tbc'],
 ['45fjk      ', 'do not know   ', '+ is less ', '              ', 'biac'],
 ['           ', 'disk          ', 'seagate   ', '250GB         ', '130'],
 ['5G_gff     ', '              ', 'tbd       ', 'tbd', ''],
 ['gjgh88hgg  ', 'media record  ', 'a and b   ', '              ', '12'],
 ['hjj        ', 'foo           ', 'bar       ', 'hop           ', 'zip'],
 ['hg uy oi   ', 'hj uuu ii a   ', 'qqq ccc v ', 'ZZZ Ughj', ''],
 ['qdsd       ', 'zert          ', '          ', 'nope          ', 'nope']]




From jisis at notmal.com  Sat Sep  9 11:15:18 2006
From: jisis at notmal.com (jason)
Date: Sat, 09 Sep 2006 17:15:18 +0200
Subject: newbie: datastructure `dictionary' question
Message-ID: <pan.2006.09.09.15.15.13.48103@notmal.com>

Hello,

I am completely new to python and I have question that I unfortunately
could not find in the various documentation online. My best guess is
that the answer should be quitte easy but I have just enterd the learning
phase so that means a hightend chance for stupidity and mistakes on my
part.

I am trying to fill a nested dictionary from parsing a logfile. However
each time there is only one key entry created and that's it. Just
one entry, while the keys are different. That's 100% sure. I think
therefore that it is an assignment error in my part. [there we have it...]

To give an static example of the datastructure that I am using to clear
any confusion on the datastructure part:

    records = { 'fam/jason-a' : {
        'date'    : 'Fri Sep  8 16:45:55 2006',
        'from'    : 'jason',
        'subject' : 'Re: Oh my goes.....',
        'msize'   : '237284' },
                'university/solar-system' : {
        'date'    : 'Fri Sep  8 16:45:46 2006',
        'from'    : 'jd',
        'subject' : 'Vacancies for students',
        'msize'   : '9387' }
    }

Looping over this datastructure is no problem.
    rkeys = ['date', 'from', 'subject', 'msize']
    for folder in records.keys():
        print '--'
        print folder
        for key in rkeys:
            print records[folder][key]

Now for the actual program/dynamic part - assignment in the loop I use the
following function. Note `datum' is not a date object, just a string.

def parselog(data):
    other = 0
    records = {}

    for line in string.split(data, '\n'):
        str = line.strip()
        if str[:4] == 'From':
            mfrom, datum = extrfrom(str), extrdate(str)
            print datum, mfrom
        elif str[:4] == 'Fold':
            folder = extrfolder(str[8:])
            records = {folder : { 'date' : datum, 'mesgbytes' : extrmsize(str[8:]), 'mesgcount' : 1}}
        else:
            other += 1

    displrec(records)

Note, this is not ment as a collision type datastructure, all initial data
entries are unique. My question: Where is my assignment e.g. records =
{folder.... wrong ?

Thankx in advance for any tips, hints and answers.

Cheers,

Jason.


From rhymes at myself.com  Tue Sep 19 15:12:14 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Tue, 19 Sep 2006 21:12:14 +0200
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<1158692796.366877.275040@b28g2000cwb.googlegroups.com>
Message-ID: <1hlxk7n.19f69smvbhv4tN%rhymes@myself.com>

richard.charts at gmail.com <richard.charts at gmail.com> wrote:

> What's the difference between this and string.split?

>>> ('http://www.python.org').partition('://')
('http', '://', 'www.python.org')
>>> ('http://www.python.org').split('://')
['http', 'www.python.org']



-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From m.errami at gmail.com  Sat Sep 23 00:37:08 2006
From: m.errami at gmail.com (m.errami at gmail.com)
Date: 22 Sep 2006 21:37:08 -0700
Subject: How to close the DOS Shell when starting a python script
Message-ID: <1158986228.279870.131610@i3g2000cwc.googlegroups.com>

Hello all.
I know the question will seem stupid but googling it gives me only
stuff I don't care about.
So the question is the following:
When I start a python script containing a wxApp under windows XP, I
double click , my program opens and a background DOS shell also opens.
Is there any way to prevent the DOS from opening?
What is weird is that when I create a freezed version (an executable),
then the DOS shell doens't open anymore.
Any clues?
Thanks for your help
M.E.



From antroy at gmail.com  Fri Sep  8 05:39:46 2006
From: antroy at gmail.com (Ant)
Date: 8 Sep 2006 02:39:46 -0700
Subject: Negation in regular expressions
In-Reply-To: <mailman.153.1157703317.5279.python-list@python.org>
References: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
	<mailman.153.1157703317.5279.python-list@python.org>
Message-ID: <1157708386.908872.257260@h48g2000cwc.googlegroups.com>


Steve Holden wrote:
> George Sakkis wrote:
> > It's always striked me as odd that you can express negation of a single
> > character in regexps, but not any more complex expression. Is there a
> > general way around this shortcoming ?

The whole point of regexes is that they define expressions to match
things. [^x] doesn't express the negation of x, it is shorthand for
[a-wy-z...]. But the intent is still to match something. What you seem
to want is a way of saying "Match anything that doesn't match the
string 'XYZ' (for example)" What do you expect to get back from this?
In the string "abcd XYZ hhh XYZ" for example, "XYZ h" doesn't match
"XYZ", nor does the empty string, nor does the entire string.

> I think you are looking for "negative lookahead assertions". See the docs.

Negative lookahead and lookbehind are great for expressing that you
want to match X as long as it isn't followed by Y ( "X(?!Y)" ) but
won't help much in your finditer example.

Is there a particular reason you don't want to use split?



From fredrik at pythonware.com  Mon Sep 25 10:26:48 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 16:26:48 +0200
Subject: Deprecation in String.joinfields()
References: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>
Message-ID: <ef8ov8$69s$1@sea.gmane.org>

"Anoop" wrote:

> I am getting the following error while trying to use deprecation

deprecation ?

>>>> li = ["a", "b", "mpilgrim", "z", "example"]
>>>> newname = string.joinfields (li[:-1], ".")
>>>> newname
> 'a.b.mpilgrim.z'
>>>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>  File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'joinfields'

you're trying to call the "joinfields" method on a list object.  lists don't have
such a method.  to join strings in a list using a separator, use

    separator.join(list)

or in your case,

    newname = ".".join(li[:-1])

older code sometimes use the "join" function from the "string" module in-
stead:

    import string
    newname = string.join(li[:-1], separator)

string.joinfields is a really old spelling of string.join.  that's been deprecated
for a decade, or so.

</F> 





From MonkeeSage at gmail.com  Tue Sep 19 13:30:51 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 19 Sep 2006 10:30:51 -0700
Subject: Curious issue with simple code
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
Message-ID: <1158687051.382936.317970@h48g2000cwc.googlegroups.com>

codefire wrote:
> As above it all works as expected. However, on the marked line, if I
> use f instead of fp then that condition returns false! Surely,
> isfile(f) should return true, even if I just give a filename, rather
> than the full path?

Hi Tony,

Actually the file is in a different directory from the working
directory, so you need to give it the path where to find it. If you
started the script from 'c:\intent\docn' (i.e., start_dir), then just
using f would work.

Regards,
Jordan



From fccoelho at gmail.com  Sat Sep 23 09:58:10 2006
From: fccoelho at gmail.com (Flavio)
Date: 23 Sep 2006 06:58:10 -0700
Subject: f2py on windows tutorials
Message-ID: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>

Hello,

Compiling f2py extensions in Linux is a trivial task, You can even
automate it with distutils. Now, in a Windows machine this does not
seem to be an easy task. At least, I could not find any decent tutorial
on how to do it.

Is there a  way to do this? Can some one point me to a tutorial.,
please?

I have tried some approaches: mingw, xmingw (cross-compiling from
Linux) and Python enthought edition (which is supposed to come
preconfigured to enable people to use Scipy tools, such as f2py)
Withouth success.

Anyone out there knows how to do this? Anyone from the Scipy dev team
care to document it?

Fl?vio



From deets at nospam.web.de  Thu Sep 28 10:46:57 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 28 Sep 2006 16:46:57 +0200
Subject: best way to get data into a new instance?
In-Reply-To: <j%QSg.44$1n3.417@news.tufts.edu>
References: <j%QSg.44$1n3.417@news.tufts.edu>
Message-ID: <4o25j2Fchq17U1@uni-berlin.de>

John Salerno schrieb:
> Let's pretend I'm creating an Employee class, which I will later 
> subclass for more specific jobs. Each instance will have stuff like a 
> name, title, degrees held, etc. etc.
> 
> So I'm wondering, is the best way to get all this information into the 
> object to just have a really long __init__ method that takes each argument?
> 
> Does a question like this depend on how the class will be used? I'm 
> trying to construct it in a way that is independent of, say, the GUI 
> interface that will be used, but I can't help but think that if all the 
> data is entered into a GUI, then passed programmatically to the class, 
> then it's no big deal because it happens behind the scenes. But if, for 
> instance, someone manually created a new instance, they would have a ton 
> of arguments to type in each time. Granted, even with the GUI they are 
> basically typing in arguments, but in the manual case you'd have to type 
> in the call to the class, the parentheses, commas, quotes around the 
> strings, etc. (But still, I'm trying not to let a specific interface 
> influence the construction of what should probably be a completely 
> independent class implementation.)

Who is typing?

The programmer is responsible for the construction of new instances (or 
at least the code which will do that), and a constructor should contain 
parameters for at least the values you absolutely expect to be there - 
for example name and age or something like that in your example.

You can of course always add attributes later.

Diez


From __peter__ at web.de  Thu Sep 21 18:36:08 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 22 Sep 2006 00:36:08 +0200
Subject: Are the CALL_FUNCTION_* opcodes ever used?
References: <mailman.428.1158876982.10491.python-list@python.org>
Message-ID: <eev41t$ju$03$1@news.t-online.com>

Fabiano Sidler wrote:

> Studying python byte code I encountered an interesting issue: there is no
> matter, which one of the following function calls I compile:
> 
> 1: func('foo','bar',foo='bar')
> 2: func('foobar')
> 3: func(foo='bar')
> 
> The compiler always uses the simple CALL_FUNCTION for all of the source
> examples above. While this is fine for me (since the labels in
> Python/ceval.c for the other 3 opcodes lead to the same code anyway), I'm
> curious to know if there is a case where the compiler really uses the
> CALL_FUNCTION_* opcodes or if we could silently remove these opcodes
> without breaking anything?

>>> def test():
...     func(*args)
...     func(**kw)
...     func(*args, **kw)
...
>>> dis.dis(test)
  2           0 LOAD_GLOBAL              0 (func)
              3 LOAD_GLOBAL              1 (args)
              6 CALL_FUNCTION_VAR        0
              9 POP_TOP

  3          10 LOAD_GLOBAL              0 (func)
             13 LOAD_GLOBAL              2 (kw)
             16 CALL_FUNCTION_KW         0
             19 POP_TOP

  4          20 LOAD_GLOBAL              0 (func)
             23 LOAD_GLOBAL              1 (args)
             26 LOAD_GLOBAL              2 (kw)
             29 CALL_FUNCTION_VAR_KW     0
             32 POP_TOP
             33 LOAD_CONST               0 (None)
             36 RETURN_VALUE

So there.

Peter


From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep  7 06:54:41 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 7 Sep 2006 12:54:41 +0200
Subject: sending emails using python
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<slrnefvi38.n6g.sybrenUSE@schuimige.stuvel.eu>
	<mailman.112.1157619018.5279.python-list@python.org>
Message-ID: <slrnefvujh.o98.sybrenUSE@schuimige.stuvel.eu>

Steve Holden enlightened us with:
> This is untrue for the Python smtplib, though correct according to
> the RFCs. The SMTP.data() method uses a locally-declared function
> called quotedata() to ensure the correct line endings, so using "\n"
> will result in the same message as using "\r\n".

Ah, wonderful.

> Useless it might be, but it's a lot more clueful than some questions
> we see, so it seems a little dismissive just to say "it's useless" -
> the OP has provided the traceback, which is so often missing in
> questions from newbies, and has correctly localized the error to a
> small chunk of code.

I agree with you. My remark might indeed have sounded harsher than
intended. It referred to the traceback itself, not the posting of the
traceback. That was rather useful.

> Ethereal trace will provide little more data than the traceback.

I don't know until I see it. Perhaps the socket is closed in response
to something the client sends. That can be seen in the Ethereal trace.

> I suppose it'll tell you whether the server is sending RST or FIN to
> terminate the connection, but it won't give much insight into why.

A quick peek in the SMTP logfiles should tell you that.

> Perhaps the SMTP server is strapped down to accepting connections from 
> specific IP addresses by some firewall?

In that case I'd expect the SMTP server to simply ignore the
connection attempt and cause a timeout in the connecting phase. I
wouldn't expect a connection to be created and then closed again,
which is what I read in the posted traceback.

> It would probably be a good idea to have a chat with the server's
> administrator to see if they can suggest what might be going wrong.

Good idea indeed. Another idea would be to use something like netcat
or telnet to connect to the port and see what happens if you manually
type an SMTP connection.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From varunhiremath at iitm.ac.in  Mon Sep 18 11:04:14 2006
From: varunhiremath at iitm.ac.in (Varun Hiremath)
Date: Mon, 18 Sep 2006 20:34:14 +0530
Subject: Interfacing my chess client with GNU chess using python
Message-ID: <20060918150414.GA16181@localdomain>

Hello,
   I have written a chess client using python which is a graphic
   interface to play chess. It is at present a two player version,
   players move their peices by clicking two squares on the board as
   in any other chess clients. 
   Now i want to interface my program with the already available
   gnuchess program. Basically i want to feed the user input to the
   gnuchess and get the output and then display in my GUI. I have read
   about Popen but i couldn't figure out how to do it. Is there any
   other better ways of doing it. Any help would be appreciated.

 

-- 
-----8<----------8<----------8<----------8<----
Varun Hiremath
Undergraduate Student,
Aerospace Engg. Department,
Indian Institute of Technology Madras,
Chennai, India
-----------------------------------------------
Webpage : http://www.ae.iitm.ac.in/~ae03b032
-----------------------------------------------



From deets at nospam.web.de  Sat Sep  2 19:23:18 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 03 Sep 2006 01:23:18 +0200
Subject: Setting "value" of an int-derived class
In-Reply-To: <mailman.10291.1157238575.27775.python-list@python.org>
References: <mailman.10291.1157238575.27775.python-list@python.org>
Message-ID: <4lui36F3n9npU1@uni-berlin.de>

Ken Schutte schrieb:
> Lets say I want an integer class that lets you attach arbitrary 
> attributes.  I can simply do:
> 
> class foo(int): pass
> 
> x = foo(5)
> x.text = "okay"
> print x, x.text   # prints "5 okay"
> 
> So, that's good.  But, how can I change the value of x from 5 to 
> something else, without creating a new instance?
> 
> I suppose I could create a function that creates a new "foo" and copies 
> its attributes, but is there a more direct way?  Is the value "5" stored 
> in some special attribute I can just directly modify?

You can't do that - the base class is immutable. Subclassing doesn't 
change that.

What you can do of course in to create a class foo that will store its 
value in an attribute, and overload the arithmetic operators and methods 
like __int__, __long__ and __float__.

Diez


From flyingisfun1217 at gmail.com  Wed Sep 27 18:18:05 2006
From: flyingisfun1217 at gmail.com (flyingisfun1217 at gmail.com)
Date: 27 Sep 2006 15:18:05 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <mailman.815.1159378067.10491.python-list@python.org>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<451A314F.3060703@isy.liu.se>
	<mailman.815.1159378067.10491.python-list@python.org>
Message-ID: <1159395485.824735.319090@b28g2000cwb.googlegroups.com>


Fredrik Lundh wrote:
> Mikael Olofsson wrote:
>
> > You probably mean
> >
> >     http://www.pythonware.com/library/tkinter/introduction/
> >
> > which is copyrighted 1999. There is also
> >
> >     http://effbot.org/tkinterbook/
> >
> > which I think is the most recent version of it. It states that it is
> > last updated in November 2005.
>
> the samples in both editions works perfectly fine on all versions of
> Python published since 1999 (afaik, most of the introductory samples are
> identical in those versions; it's the reference pages that's been over-
> hauled).
>
> </F>

Ok, again, thanks for the help, I'm somewhat new to python, along with
Tkinter.

If anybody has some really good sites with examples of Tkinter programs
and stuff, please share :)

Tanner

ps: who keeps giving out the bad reviews to posts?



From exarkun at divmod.com  Mon Sep  4 12:01:30 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 4 Sep 2006 12:01:30 -0400
Subject: threading support in python
In-Reply-To: <slrnefoilu.q8f.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <20060904160130.1717.129698922.divmod.quotient.38954@ohm>

On Mon, 4 Sep 2006 17:48:14 +0200, Sybren Stuvel <sybrenuse at yourthirdtower.com.imagination> wrote:
>km enlightened us with:
>> Is there any PEP to introduce true threading features into python's
>> next version as in java? i mean without having GIL.
>
>What is GIL? Except for the Dutch word for SCREAM that is...
>
>> when compared to other languages, python is fun to code but i feel
>> its is lacking behind in threading
>
>What's wrong with the current threading? AFAIK it's directly linked to
>the threading of the underlying platform.

Only one thread per process can execute Python bytecode, even on an SMP
system.  The main bytecode eval loop is protected by a lock, the "Global
Interpreter Lock".

This doesn't prevent certain operations from being parallelized.  For
example, many of the I/O calls in Python release the GIL so that while
they are blocked on the network or the disk, another thread can continue
to execute.  Extension modules which perform computationally intensive
tasks can also release the GIL to allow better exploitation of SMP
resources.

Jean-Paul


From jstroud at mbi.ucla.edu  Mon Sep 25 19:20:15 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 25 Sep 2006 23:20:15 GMT
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <PuZRg.8039$Ij.5453@newssvr14.news.prodigy.com>

walterbyrd wrote:
> If so, I doubt there are many. 
> 
> I wonder why that is?
> 

If you know German, there was just a job posting on this list for a 
python programmer. That would be at least one person.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From fredrik at pythonware.com  Thu Sep 14 13:07:45 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 19:07:45 +0200
Subject: xinclude and pathnames
In-Reply-To: <Xns983E9DE2BCAB7rtwfreenetREMOVEcouk@216.196.109.145>
References: <ee9231$mpj$1@foggy.unx.sas.com> <eebkgl$u90$1@foggy.unx.sas.com>
	<Xns983E9DE2BCAB7rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <eec292$cg6$1@sea.gmane.org>

Rob Williscroft wrote:

> The default handler just sees the href value as a filename, so you
> should be able to use a relative path if you os.chdir() to the working
> directory before processing you xml file.

and if that's not good enough, writing a custom loader is trivial (see 
the default_loader implementation in ElementInclude.py for details).

</F>



From gajewski.konrad at gmail.com  Tue Sep  5 06:11:19 2006
From: gajewski.konrad at gmail.com (gajewski.konrad at gmail.com)
Date: 5 Sep 2006 03:11:19 -0700
Subject: Check XML Without any DTD or schema.
Message-ID: <1157451079.113509.290530@e3g2000cwe.googlegroups.com>

Hi All.

I'm newbee. I try to check syntax any XML file. I don't have any dtd or
shema file to this xml.
Is this possible that I check syntax in any xml file in python.

Regards,
Dreamen



From rpdooling at gmail.com  Mon Sep 18 14:07:34 2006
From: rpdooling at gmail.com (BartlebyScrivener)
Date: 18 Sep 2006 11:07:34 -0700
Subject: Help
References: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
Message-ID: <1158602854.282069.294160@k70g2000cwa.googlegroups.com>

Rrajal wrote:
> Hi there, I am new in this subject so could you please tell me from
> where I can get help (or good e-book) of python?

You don't provide much info about where you are in your learning cycle.
New to programming? New to Python? Both?

If you do use the Tutorial, use the newest version:

http://docs.python.org/dev/tut/tut.html



From fakeaddress at nowhere.org  Fri Sep 22 16:46:05 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 22 Sep 2006 20:46:05 GMT
Subject: send with timeout socket
In-Reply-To: <Xns9846B5667B633stefninalussinanorg@212.27.42.133>
References: <Xns984679EF2DA0Fstefninalussinanorg@212.27.42.133>
	<mailman.456.1158928921.10491.python-list@python.org>
	<Xns9846A8DD61EA8stefninalussinanorg@212.27.42.133>
	<OWSQg.3522$vJ2.2897@newssvr12.news.prodigy.com>
	<Xns9846B5667B633stefninalussinanorg@212.27.42.133>
Message-ID: <hYXQg.7298$Ij.3196@newssvr14.news.prodigy.com>

St?phane Ninin wrote:
> I want to make sure that, if nothing is sent after some time,
> if event "terminated" is set, 
> then the thread doesnot spend more time trying to send something which 
> has become useless.

You should be good then. The timeout is on each send(), and send
times out if and only if the socket remains not ready for
output.


-- 
--Bryan


From bolderaft at gmail.com  Sun Sep 17 11:44:09 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 17 Sep 2006 08:44:09 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
Message-ID: <1158507849.378435.47080@d34g2000cwd.googlegroups.com>


Rakotomandimby (R12y) wrote:
> On Sat, 16 Sep 2006 12:30:56 -0700, Robert Hicks wrote:
>
> > That said...the Python docs are open source. Just start going through
> > them and adding examples.
>
> ASPN (activestate) is a good place for examples...

Yes, but that requires a separate search and depends on an external
organization. Wouldn't it be great if relevant examples were a single
click away from official documentation on any given module?  Examples
could either come in via a wiki approach, or maybe in some cases from
the doctests, which would be nice to have alongside handy access to the
source code.



From metaperl at gmail.com  Thu Sep 28 17:32:18 2006
From: metaperl at gmail.com (metaperl)
Date: 28 Sep 2006 14:32:18 -0700
Subject: startswith() and endswith() for re's would be more intuitive
In-Reply-To: <451bdc57$0$20520$626a54ce@news.free.fr>
References: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>
	<451bdc57$0$20520$626a54ce@news.free.fr>
Message-ID: <1159479137.991732.135620@k70g2000cwa.googlegroups.com>


Bruno Desthuilliers wrote:
> metaperl wrote:
> > I just finished answering a question in #python because someone tried
> > to match using ... well.. match()
> > but did not realize that match() is actually startswith() for regexps.
>
> Yet someone else that failed to read the Fine Manual(tm).
>
> > I suggest:
> > re.compile('blah').atstartof(string)
> > re.compile('blah').atendof(string)
>
> What's wrong with:
> re.search(r'^blah', somestring)
> re.search(r'blah$', somestring)

Nothing. There is also nothing wrong with

re.match('blah', somestring)

but it does read as well as

re.atstartof('blah', something)

and the counterpart for EOS is not there.



From alefnula at gmail.com  Sun Sep 17 10:12:50 2006
From: alefnula at gmail.com (alefnula at gmail.com)
Date: 17 Sep 2006 07:12:50 -0700
Subject: Cheese Shop Registration error
Message-ID: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>

I tried to register on the Python Cheese Shop, but I constatnly get a
"GPG key ID is invalid" error.

I made a new GPG key using kgpg, exported the public key to the key
server, and copy/pasted the Key ID into the registration form... But it
doesn't work.



From exogen at gmail.com  Mon Sep 25 15:49:40 2006
From: exogen at gmail.com (Brian Beck)
Date: Mon, 25 Sep 2006 15:49:40 -0400
Subject: ANN: dmath 0.9 - Math routines for the Decimal type
References: <ef9bab$fbj$1@eeyore.INS.cwru.edu>
Message-ID: <ef9brp$hjv$1@eeyore.INS.cwru.edu>

Brian Beck wrote:
> What is dmath?
> ==============
> dmath provides the standard math routines for Python's arbitrary-precision
> Decimal type. These include acos, asin, atan, atan2, ceil, cos, cosh,
> degrees, e, exp, floor, golden_ratio, hypot, log, log10, pi, pow, radians,
> sign, sin, sinh, sqrt, tan, and tanh.

Oh yeah, you may be wondering how this differs from decimalfuncs:
http://cheeseshop.python.org/pypi/decimalfuncs/1.4

The answer is that dmath has the complete set of math routines (not just a
subset), it's faster (from what I can tell), doesn't require its own
precision-setting method, and it's MIT instead of GPL licensed.

-- 
Brian Beck
Adventurer of the First Order


From pmo178 at yahoo.es  Mon Sep 11 13:07:15 2006
From: pmo178 at yahoo.es (pmy)
Date: 11 Sep 2006 10:07:15 -0700
Subject: Hello to watch this interesting page he is on sharp 904sh
Message-ID: <1157994435.223505.61830@i3g2000cwc.googlegroups.com>


hello to watch this interesting page he is on sharp 904sh



http://p178.hit-logo-ringtone.com/0-000/us_en/inicio/index.html?chc=us



http://p178.play-mobilegame.com/



http://pmo.logos-and-ringtones.tv/?p=us



http://es.geocities.com/pmo178/index.html



http://es.geocities.com/pmo178/mapa.index.html



http://p178.hit-logo-ringtone.com/5-000/us_en/compatibility/1000/0/0/...



From sjdevnull at yahoo.com  Fri Sep 29 13:19:44 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 29 Sep 2006 10:19:44 -0700
Subject: wxPython and threading issue
In-Reply-To: <z7aTg.90493$ED.50643@read2.cgocable.net>
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
	<1159499923.311082.63610@h48g2000cwc.googlegroups.com>
	<an0Tg.125766$sS1.18589@read1.cgocable.net>
	<1159514838.443661.228420@i42g2000cwa.googlegroups.com>
	<z7aTg.90493$ED.50643@read2.cgocable.net>
Message-ID: <1159550384.377574.122560@k70g2000cwa.googlegroups.com>

Patrick Smith wrote:
> > Well, the problem is that you can't simply kill a thread--it shares
> > memory with other threads that it could be leaving in an inconsistent
> > state.  Imagine that it was, say, holding a lock when it was forceably
> > killed.  Now any other thread that tries to acquire that lock will
> > block forever.
> >
> > You really do need the thread's cooperation so that it only exits when
> > everything is in a kosher state.  Can you dig into the incredibly long
> > function and change it to do the flag-checking and exiting safely?
> >
> > I second the notion to consider using subprocesses instead of threads;
> > that's almost always a good idea unless you're really sharing a lot of
> > complex data structures.
> >
>
> Hi,
> Thanks again for your replies.
>
> The way this was originally working was actually using a subprocess,
> however, the people who this program is for were having problems that when
> the application was closed, the subprocess was still around in the system,

Have the main process kill the subprocess when it exits; this should be
fine unless you use kill -9 or the windows equivalent (e.g terminating
from the task manager), in which case you can kill the subproc manually
as well.

> Also, the people who I am doing this for need something ASAP and for now are
> fine with the cancel button completely closing the entire program.  Is there
> at least a nice way to do this?

maybe os.abort or os._exit depending on what you want and how they
behave on your platform?



From steve at holdenweb.com  Tue Sep 26 15:09:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 15:09:51 -0400
Subject: Win32: Access to network resources w/o user login
In-Reply-To: <1159293185.847276.77190@i3g2000cwc.googlegroups.com>
References: <1159293185.847276.77190@i3g2000cwc.googlegroups.com>
Message-ID: <efbtsc$tv8$1@sea.gmane.org>

utabintarbo wrote:
> Is there a way to (programmatically) access network resources from a
> WinXP client without a user being logged in? I guess I need to know
> where the fstab file is in Windows. :-P
> 
> Some more background: I am trying to access a samba share which is set
> up for anonymous login (all unknown users are mapped to a known user)
> with a process I hope to turn into a service (as soon as I figure
> *that* out as well :-P).
> 
> Any help is *greatly* appreciated!
> 
http://oss.coresecurity.com/projects/impacket.html

perhaps?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Thu Sep 21 15:21:51 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 19:21:51 GMT
Subject: Retrieve HTML from site using cookies
In-Reply-To: <1158861480.320611.76850@m7g2000cwm.googlegroups.com>
References: <1158861480.320611.76850@m7g2000cwm.googlegroups.com>
Message-ID: <jDBQg.4977$7I1.3494@newssvr27.news.prodigy.net>

onceuponapriori at gmail.com wrote:
> Greetings gents. I'm a Railser working on a django app that needs to do
> some scraping to gather its data.
> 
> I need to programatically access a site that requires a username and
> password. Once I post to the login.php page, there seems to be a
> redirect and it seems that the site is using a session (perhaps a
> cookie) to determine whether the user is logged in. So I need to log in
> and then have cookies and or sessions maintained as I access the page
> that contains the content that I am actually interested in.
> 
> What is the simplest way to post data to a form, accept a cookie to
> maintain the session (and support redirects) and then (now logged into
> the site) retrieve the content of a page on the site?
> 
> Is their a library or technique that makes this simple?
> 
> Thanks!
> 

I submit to you, in its entirety a, a script I wrote to do this. I think 
its simple enough to figure out the important parts. I left some 
debugging code in. Sorry for no explanation, etc., but I'm still playing 
with the new 2.5 distro! This program worked for me, but there may be 
comment on whether its good code from others. Names have been changed to 
protect the innocent.


James



#! /usr/bin/env python

import sys
import os.path
import time
import random
import urllib
import urllib2
import cookielib

class DummyError(Exception): pass


#######################################################################
# some constants
#######################################################################
COOKIEFILE = 'cookies.lwp'

pda = "http://www.somemapcompany.com/"

signin_params = urllib.urlencode({'email_address':'your at email.address',
                                   'password':'yourpasshere',
                                   'action':'log_in',
                                   'Submit':'Sign In'})

signout_params = urllib.urlencode({'action':'sign_out'})

download_dict = {'screen':'map_details', 'action':'download'}

info_dict = {'screen':'map_details',
              'back':'find_maps',
              'view':'state'}

#######################################################################
# setup for cookies
#######################################################################
cj = cookielib.LWPCookieJar()

if os.path.isfile(COOKIEFILE):
   cj.load(COOKIEFILE)

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
urllib2.install_opener(opener)


#######################################################################
# make the signin request
#######################################################################
user_agent = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'
txheaders =  {'User-agent' : user_agent}
req = urllib2.Request(pda, signin_params, txheaders)

#######################################################################
# download_map
#######################################################################
def download_map(map_id, urlopen=urllib2.urlopen):

   #####################################################################
   # download the map
   #####################################################################
   download_dict['map_id'] = map_id
   download_params = urllib.urlencode(download_dict)

   mapin = urlopen(pda + ("?%s" % download_params))

   mapout = open('map-%s' % map_id, "wb")
   mapout.write(mapin.read())
   mapout.close()

   #####################################################################
   # download the map info
   #####################################################################
   info_dict['map_id'] = map_id
   info_params = urllib.urlencode(info_dict)

   infoin = urlopen(pda + ("?%s" % info_params))

   infoout = open('info-%s' % map_id, "wb")
   infoout.write(infoin.read())
   infoout.close()


#######################################################################
# signin and print info
#######################################################################
try:
   signin = urllib2.urlopen(req)
except IOError, e:
     print 'We failed to open "%s".' % pda
     if hasattr(e, 'code'):
         print 'We failed with error code - %s.' % e.code
else:
     print
     print 'Here are the headers of the page :'
     print signin.info()
     afile = open("signin.html", "w")
     afile.write(signin.read())
     afile.close()


#######################################################################
# report and save cookies
#######################################################################
print
for index, cookie in enumerate(cj):
   print index, '  :  ', cookie

cj.save(COOKIEFILE, True, True)

print
print "cookies===>"
os.system('cat %s' % COOKIEFILE)
print "<===cookies"

for map_id in xrange(1001, 1507):
   try:
     download_map(map_id)
     wait = 7.5 + random.randint(0,5)
     print "=====> waiting %s seconds..." % wait
     time.sleep(wait)
   except urllib2.HTTPError, e:
   # except DummyError, e:
     print "%s: failed to download" % map_id
     print "  HTTP ERROR:", e
   else:
     print "# Downloaded map %s successfully." % map_id

signout = urllib.urlopen(pda + ("?%s" % signout_params))

afile = open("signout.html", "w")
afile.write(signout.read())
afile.close()


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From simonwittber at gmail.com  Wed Sep 13 02:24:55 2006
From: simonwittber at gmail.com (Simon Wittber)
Date: 12 Sep 2006 23:24:55 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
Message-ID: <1158128695.301849.148210@p79g2000cwp.googlegroups.com>

Michael wrote:
> Also, Paul Boddie posted a module for parallel systems a while back as well
> which might be useful (at least for ideas):
>    * http://cheeseshop.python.org/pypi/parallel
>

I've checked this out, it looks like a good idea which I could build
further on.

I've just noticed that os.fork is not available on Win32. Ouch.

Does that mean there is _no_ way for a single Python program to use
multiple CPU/core systems on Windows? (other than writing an extension
module in C (which is completely unacceptable for me!))

-Sw.



From melih.onvural at gmail.com  Tue Sep 26 19:15:23 2006
From: melih.onvural at gmail.com (Melih Onvural)
Date: 26 Sep 2006 16:15:23 -0700
Subject: problem moving from char to integer
Message-ID: <1159312523.880618.316150@m7g2000cwm.googlegroups.com>

Group,

I'm trying to get a very basic cast from a string to an integer
working. Here is what I'm doing:

for i in url:
     result[counter] = int(i)
     counter += 1;

return result;

anything that I'm doing drastically wrong? Mac OS 10.4, MacPython
upgraded to 2.4. Thanks for any help,

Melih



From ldo at geek-central.gen.new_zealand  Sat Sep 23 08:01:34 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 00:01:34 +1200
Subject: Python and checked exceptions
References: <1159009493.872015.33880@d34g2000cwd.googlegroups.com>
Message-ID: <ef37l4$5hj$2@lust.ihug.co.nz>

In message <1159009493.872015.33880 at d34g2000cwd.googlegroups.com>, Kay
Schluehr wrote:

> A new cookbook recipe suggesting two decorators @throws and @catches
> for treatment of checked exceptions in Python:
> 
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498131
> 
> This might be of practical interest for some and theoretical interest
> for others - in particular those who know checked ex as a language
> feature of Java.

The trouble with having to declare every possible exception that a function
might throw is that it rapidly turns into a complete mess. That's why such
declarations are optional in C++, and only semi-mandatory in Java.


From max at alcyone.com  Mon Sep  4 15:11:43 2006
From: max at alcyone.com (Erik Max Francis)
Date: Mon, 04 Sep 2006 12:11:43 -0700
Subject: Test for number?
In-Reply-To: <44fc7664$0$10459$ba620e4c@news.skynet.be>
References: <G51489767.912.3617.1@mx-extra>
	<mailman.10343.1157394315.27775.python-list@python.org>
	<44fc7664$0$10459$ba620e4c@news.skynet.be>
Message-ID: <YPqdnT-N867s52HZnZ2dnUVZ_tydnZ2d@speakeasy.net>

Helmut Jarausch wrote:

> One step further
> 
> try:
>    eval(x+'0')
> ....

That is an exceedingly bad idea.  Type:

	__import__('sys').exit(),

in the prompt and see what happens.

You _never_ want to run `eval` on an untrusted string.  Never.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   Divorces are made in Heaven.
    -- Oscar Wilde


From sjmachin at lexicon.net  Sat Sep 23 21:53:30 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 18:53:30 -0700
Subject: Regular expression confusion
In-Reply-To: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>
References: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>
Message-ID: <1159062810.790437.188220@h48g2000cwc.googlegroups.com>


York wrote:
> I have two backslash - a. and I want to replace them with one backslash,
> but I failed:
>
>  >>> import re
>  >>> a = '\\\\'
>  >>> re.sub(r'\\\\', '\\', '\\\\')
> Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
>    File "/usr/lib/python2.3/sre.py", line 143, in sub
>      return _compile(pattern, 0).sub(repl, string, count)
>    File "/usr/lib/python2.3/sre.py", line 258, in _subx
>      template = _compile_repl(template, pattern)
>    File "/usr/lib/python2.3/sre.py", line 245, in _compile_repl
>      raise error, v # invalid expression
> sre_constants.error: bogus escape (end of line)
>  >>>
>
> anybody knows why?

Yep. There are *two* levels of escaping happening (1) Python compiler
(2) re compiler (in the first two args, but of course only Python in
the 3rd).
To get your single backslash you need to start out with four cooked or
two raw:

| >>> re.sub(r'\\\\', '\\\\', '\\\\')
'\\'
| >>> re.sub(r'\\\\', r'\\', '\\\\')
'\\'

Cheers,
John



From bdesth.quelquechose at free.quelquepart.fr  Fri Sep 15 18:10:38 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 16 Sep 2006 00:10:38 +0200
Subject: ancestor class' __init__ doesn't call other methods
In-Reply-To: <450af8d6$0$75041$14726298@news.sunsite.dk>
References: <450af8d6$0$75041$14726298@news.sunsite.dk>
Message-ID: <450b2197$0$27871$626a54ce@news.free.fr>

Luis P. Mendes a ?crit :
> Hi,
> 
> I have the following problem:
> 
> I instantiate class Sistema from another class.  The result is the same
> if I import it to interactive shell.
> 
> s = Sistema("par")
> 
> class Sistema:
>     def __init__(self, par):
>         cruza_ema = CruzaEmas(par)
> 
> class CruzaEmas(Ema, Cotacoes):
>     def __init__(self, par):
>         Cotacoes.__init__(self, par)  <- calls ancestor class' __init__
> 
> class Cotacoes:
>     def __init__(self, par):
>         print "par: ", par
>         self.a()
>     def a(self):			<- just as an example
>         print "ffffffffffffff"
 >
 > Method a() is not called.  Why is this?

Because there are far too many errors before ?

 > What is the best option to
 > solve this?

Fixing obvious errors would be a good start IMHO.

I tried to run your snippet. Here's a snapshot of the session:

bruno at bibi playground $ cat cotacoes.py
s = Sistema("par")

class Sistema:
     def __init__(self, par):
         cruza_ema = CruzaEmas(par)

class CruzaEmas(Ema, Cotacoes):
     def __init__(self, par):
         Cotacoes.__init__(self, par)  <- calls ancestor class' __init__

class Cotacoes:
     def __init__(self, par):
         print "par: ", par
         self.a()
     def a(self):                         <- just as an example
         print "ffffffffffffff"

bruno at bibi playground $ python cotacoes.py
   File "cotacoes.py", line 9
     Cotacoes.__init__(self, par)  <- calls ancestor class' __init__
                                                   ^
SyntaxError: invalid syntax
bruno at bibi playground $

(fix)

bruno at bibi playground $ python cotacoes.py
   File "cotacoes.py", line 15
     def a(self):                         <- just as an example
                     ^
SyntaxError: invalid syntax

(fix)

bruno at bibi playground $ python cotacoes.py
Traceback (most recent call last):
   File "cotacoes.py", line 1, in ?
     s = Sistema("par")
NameError: name 'Sistema' is not defined

(fix)

bruno at bibi playground $ python cotacoes.py
Traceback (most recent call last):
   File "cotacoes.py", line 5, in ?
     class CruzaEmas(Ema, Cotacoes):
NameError: name 'Ema' is not defined

(fix with a dummy class)

bruno at bibi playground $ python cotacoes.py
Traceback (most recent call last):
   File "cotacoes.py", line 8, in ?
     class CruzaEmas(Ema, Cotacoes):
NameError: name 'Cotacoes' is not defined

(grr... fix)

bruno at bibi playground $ python cotacoes.py
par:  par
ffffffffffffff

here's the fixed code:

bruno at bibi playground $ cat cotacoes.py
class Sistema:
     def __init__(self, par):
         cruza_ema = CruzaEmas(par)

class Ema:
     pass

class Cotacoes:
     def __init__(self, par):
         print "par: ", par
         self.a()
     def a(self):                         # <- just as an example
         print "ffffffffffffff"

class CruzaEmas(Ema, Cotacoes):
     def __init__(self, par):
         Cotacoes.__init__(self, par)  # <- calls ancestor class'

s = Sistema("par")
bruno at bibi playground $

It would have been nice to take the time to test your snippet at least 
once.


From larry.bates at websafe.com  Fri Sep  1 18:03:00 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 01 Sep 2006 17:03:00 -0500
Subject: where or filter on list
In-Reply-To: <1156944154.370085.6360@m73g2000cwd.googlegroups.com>
References: <1156939493.558819.8410@i42g2000cwa.googlegroups.com>
	<44F58DF8.7000308@websafe.com>
	<1156944154.370085.6360@m73g2000cwd.googlegroups.com>
Message-ID: <44F8AE14.3080603@websafe.com>

What I mean is: What if there are two items that are
equidistant to what you are searching for?


Example:

foo = [-5,-1,1,3,5]
print closest(0, foo)

-1 and 1 are both "equally close" to zero that I'm
searching for.  This is an edge case that you didn't
define an answer to and closest function that I
wrote may (or may not) return the correct answer.

-Larry

charles.hebert at gmail.com wrote:
> Thanks all !
> 
>> Question: what if two values are equidistant?
> 
>>>> def closest(foo,v):
> ...     intermed = [(abs(v), v) for v in foo]
> ...     intermed.sort()
> ...     return [x[1] for x in intermed if x[0] == intermed[0][0]]
> ...
>>>> print closest([-20,-10,10,15],0)
> [-10, 10]
> 
> Works fine !
> 
> (now with sorted ... ?)
> 


From Mark.Geyzer at gmail.com  Sat Sep 23 13:49:52 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 23 Sep 2006 10:49:52 -0700
Subject: Running Python script from C++ code(.NET)
Message-ID: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>

Hello, folks!
A trivial question - I have a working Python script that I have to
invoke from C++ code. No fancy stuff - just run the whole script with
its parameters. No callbacks, no signalling - nada, just
stupid,primitive, straightforward call.

And while there is a lot of help on embedding, I could not find out how
to run script as a whole.SOS!!!!



From herrekberg at users.sf.net  Sat Sep  2 11:34:21 2006
From: herrekberg at users.sf.net (Pontus Ekberg)
Date: Sat, 02 Sep 2006 17:34:21 +0200
Subject: How to run Python file?
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
Message-ID: <pan.2006.09.02.15.34.21.458976@users.sf.net>

mistral wrote:

> I have installed ActivePython
> http://www.activestate.com/Products/ActivePython/
> How I can run Python file, test.py?

$ python test.py

or

$ ./test.py (if test.py is executable)




From george.sakkis at gmail.com  Tue Sep 19 15:21:43 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 19 Sep 2006 12:21:43 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
Message-ID: <1158693703.018937.284690@m73g2000cwd.googlegroups.com>

Ilias Lazaridis wrote:

> I like to add a method "writeDebug(self, msg)" to all (or the most
> possible) classes in the system.
>
> How do I do this?
>
> * with new style classes
> * with old style classes

Short answer: you can't do it for builtin or extension types:
>>> list.writeDebug = lambda msg: "You'd wish"
...
TypeError: can't set attributes of built-in/extension type 'list'

Longer asnwer: Make it a function instead of a method. This function
could try to call the respective method, and as a fallback it would
have hardcoded what to do for each supported class, something like:

def writeDebug(obj, msg):
    try: return obj.writeDebug(msg)
    except AttributeError:
        if isinstance(obj,list):
            # list msg
        elif isinstance(obj,tuple):
            # tuple msg
        ...
        else:
            # default object msg

If you insist though that you'd rather not use functions but only
methods, tough luck; you're better off with Ruby.

George



From ldo at geek-central.gen.new_zealand  Mon Sep 25 23:45:23 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 15:45:23 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<4517ec24$0$13947$edfadb0f@dread15.news.tele.dk>
Message-ID: <efa7mo$pr2$3@lust.ihug.co.nz>

In message <4517ec24$0$13947$edfadb0f at dread15.news.tele.dk>, Max M wrote:

> Jon Ribbens skrev:
>> In article <mailman.569.1159192888.10491.python-list at python.org>, Fredrik
>> Lundh wrote:
>>>> There's nothing to say that cgi.escape should take them both into
>>>> account in the one function
>>> so what exactly are you using cgi.escape for in your code ?
>> 
>> To escape characters so that they will be treated as character data
>> and not control characters in HTML.
>> 
>>>> What precisely do you think it would "break"?
>>> existing code, and existing tests.
>> 
>> I'm sorry, that's not good enough. How, precisely, would it break
>> "existing code"? Can you come up with an example, or even an
>> explanation of how it *could* break existing code?
> 
> 
> Some examples are:
> 
> - Possibly any code that tests for string equality in a rendered
> html/xml page.

You've got to be kidding. Any programmer knows that, to test two strings for
equality, you should do that on a canonical (non-encoded) representation.

> - Code that generates cgi.escaped() markup and (rightfully) for some
> reason expects the old behaviour to be used.

Whenever I use a channel-coding function, I expect the resulting output to
be only fit for feeding into the channel. I do NOT expect to do anything
else with it. Any kind of data manipulation I do, I do BEFORE feeding it
into the output channel, which means BEFORE putting it through the channel
coding.

> - 3. party code that parses/scrapes content from cgi.escaped() markup.
> (you could even break Java code this way :-s )

If that code follows the HTML rules, it will work.



From http  Sat Sep 23 01:05:05 2006
From: http (Paul Rubin)
Date: 22 Sep 2006 22:05:05 -0700
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
	<mailman.405.1158107055.5279.python-list@python.org>
	<7x4pv753mq.fsf@ruckus.brouhaha.com>
	<1158622096.384055.215610@e3g2000cwe.googlegroups.com>
Message-ID: <7xd59np3zy.fsf@ruckus.brouhaha.com>

"Michael Sparks" <sparks.m at gmail.com> writes:
> > Kamaelia doesn't attempt concurrency at all.  Its main idea is to use
> > generators to simulate microthreads.
> 
> Regarding Kamaelia, that's not been the case for over a year now.
> 
> We've had threaded components as well as generator based ones since
> around last July, however their API stablised properly about 4 months
> back. If you use C extensions that release the GIL and are using an OS
> that puts threads on different CPUs then you have genuine concurrency.
> (those are albeit some big caveats, but not uncommon ones in python).

Oh neat, this is good to hear.

> Personally, I'm very much in the camp that says "shared data is
> invariably a bad idea unless you really know what you're doing"
> (largely because it's the most common source of bugs for people where
> they're trying to do more than one thing at a time). People also
> generally appear to find writing threadsafe code very hard. (not
> everyone, just the people who aren't at the top end of the bell curve
> for writing code that does more than one thing at a time)

I don't think it's that bad.  Yes, free-threaded programs synchronized
by seat-of-the-pants locking turns to a mess pretty quickly.  But
ordinary programmers write real-world applications with shared data
all the time, namely database apps.  The database server provides the
synchronization and a good abstraction that lets the programmer not
have to go crazy thinking about the fine points, while maintaining the
shared data.  The cost is all the query construction, the marshalling
and demarshalling of the data from Python object formats into byte
strings, then copying these byte strings around through OS-supplied
IPC mechanisms involving multiple context switches and sometimes trips
up and down network protocol stacks even when the client and server
are on the same machine.  This is just silly, and wasteful of the
efforts of the hardworking chip designers who put that nice cache
coherence circuitry into our CPU's, to mediate shared data access at
the sub-instruction level so we don't need all that IPC hair.  

Basically if the hardware gods have blessed us with concurrent cpu's
sharing memory, it's our nerdly duty to figure out how to use it.  We
need better abstractions than raw locks, but this is hardly new.
Assembly language programmers made integer-vs-pointer aliasing or
similar type errors all the time, so we got compiled languages with
type consistency enforcement.  Goto statements turned ancient Fortran
code into spaghetti, so we got languages with better control
structures.  We found memory allocation bookkeeping to do by hand in
complex programs, so we use garbage collection now.  And to deal with
shared data, transactional databases have been a very effective tool
despite all the inefficiency mentioned above.  

Lately I've been reading about "software transactional memory" (STM),
a scheme for treating shared memory as if it were a database, without
using locks except for during updates.  In some versions, STM
transactions are composable, so nowhere near as bug-prone as
fine-grained locks; and because readers don't need locks (they instead
have to abort and restart transactions in the rare event of a
simultaneous update) STM actually performs -faster- than traditional
locking.  I posted a couple of URL's in another thread and will try
writing a more detailed post sometime.  It is pretty neat stuff.
There are some C libraries for it that it might be possible to port to
Python.  


From __peter__ at web.de  Sat Sep 16 02:32:48 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 16 Sep 2006 08:32:48 +0200
Subject: Coding Nested Loops
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.155.1158356025.10491.python-list@python.org>
Message-ID: <eeg5o2$226$00$1@news.t-online.com>

Rich Shepard wrote:

> On Fri, 15 Sep 2006, Peter Otten wrote:
> 
>> It's not clear to me why you would use dictionaries, especially as they
>> are unordered; I used lists instead:
> 
>    ...
> 
>> Now that is a nice occasion to get acquainted with the itertools
>> module...
> 
> Peter,
> 
>    I have to study the docs to understand what's going on. But, I can see
> that this would work.

As George hinted, I went a bit over the top with my itertools example. Here
is a translation into static lists (mostly):

from itertools import izip
from random import choice

first =  ["X", "Y", "Z"]
second = ["A", "B", "C"]
third = [1.1, 2.2, 3.3, 4.4]

x, y, z = first
a, b, c = second

def random_floats(sample):
    while 1:
        yield choice(sample)

columns = [
    range(180),
    [x]*60 + [y]*60 + [z]*60,
    ([a]*13 + [b]*14 + [c]*33) * 3] + [random_floats(third)]*28

for row in izip(*columns):
    print row

Of course nested loops will work, too. Use whatever you find easiest to
maintain.

Peter



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 15 16:10:50 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 15 Sep 2006 22:10:50 +0200
Subject: wxTimer problem
References: <1158349650.327255.135060@k70g2000cwa.googlegroups.com>
Message-ID: <4n0fm7F89kp7U1@individual.net>

abcd wrote:

> ...and I am getting this error:
> 
> "timer can only be started from the main thread"
> 
> how can I fix this??
> 
> FYI, my script is being started by a new thread each time

Fix: Start the script from the main thread only.

Regards,


Bj?rn

-- 
BOFH excuse #53:

Little hamster in running wheel had coronary; waiting for
replacement to be Fedexed from Wyoming



From robert.kern at gmail.com  Wed Sep 27 14:38:51 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 27 Sep 2006 13:38:51 -0500
Subject: f2py on windows tutorials
In-Reply-To: <1159381032.183790.39090@d34g2000cwd.googlegroups.com>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>	<mailman.504.1159044688.10491.python-list@python.org>	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>	<mailman.730.1159299369.10491.python-list@python.org>	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>	<efcddb$itm$1@sea.gmane.org>	<mailman.753.1159314004.10491.python-list@python.org>	<1159364285.218632.35040@h48g2000cwc.googlegroups.com>	<mailman.812.1159377587.10491.python-list@python.org>
	<1159381032.183790.39090@d34g2000cwd.googlegroups.com>
Message-ID: <efegfm$akg$1@sea.gmane.org>

Flavio wrote:
> Hi Robert,
> 
> Good News,
> 
> I tried creating the setup.cfg as you suggested and ran
> 
> python setup.py bdist_wininst
> and
> python setup.py bdist_egg
> 
> both of them worked perfectly!!! compiled my Fortran extension, and
> packed it up for distribution.
> I have since installed and tested and it even works! isn't this great?
> 
> thanks for all the help you provided. I couldn't have done it without
> it.

I found out why you were getting the probel with .pyf files before. The 
dependency management between commands is a bit wonky, so in order to use .pyf 
files, you need to run the build_src command explicitly before build_ext (or 
*just* use build or one of the bdist_*).

   python setup.py build_src build_ext --compiler=mingw32 build
   python setup.py build
   python setup.py bdist_egg

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From ml.legrand at free.fr  Sat Sep 23 15:41:06 2006
From: ml.legrand at free.fr (michel legrand)
Date: Sat, 23 Sep 2006 21:41:06 +0200
Subject: "wxmsw26uh_vc.dll not found" when using wxAgg backend
Message-ID: <003801c6df48$38927700$cb1be852@PC959529904209>

Hello,

Copy wxmsw26uh_vc.dll in
C:\python24\lib\site-packages\matplotlib\backends.

To find wxmsw26uh_vc.dll, you can download
wxPython2.6-win32-unicode-2.6.3.3-py24.exe,and execute in a
specific directory and extract the file wxmsw26uh_vc.dll
(C:\...\wx-2.6-msw-unicode\wx)

Regards,

Michel

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From vedran_dekovic at yahoo.com  Sun Sep  3 10:02:46 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 3 Sep 2006 07:02:46 -0700
Subject: Pmw installation problem
Message-ID: <1157292166.731947.150210@p79g2000cwp.googlegroups.com>

Hi,
When I download Pmw,and .py files copy to lib,then in python shell
I write:

>>>import Pmw
Traceback (most recent call last):
  File "<pyshell#44>", line 1, in -toplevel-
    import Pmw
ImportError: No module named Pmw









            Regards,

            Vedran,Croatia



From larry.bates at websafe.com  Tue Sep 26 19:43:32 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 26 Sep 2006 18:43:32 -0500
Subject: problem moving from char to integer
In-Reply-To: <1159313008.738945.127950@i42g2000cwa.googlegroups.com>
References: <1159312523.880618.316150@m7g2000cwm.googlegroups.com>
	<pan.2006.09.26.23.19.22.800843@users.sf.net>
	<1159313008.738945.127950@i42g2000cwa.googlegroups.com>
Message-ID: <4519BB24.6080600@websafe.com>

Melih Onvural wrote:
> This is the error message that I'm having a tough time interpreting:
> Traceback (most recent call last):
>   File "pagerank.py", line 101, in ?
>     main()
>   File "pagerank.py", line 96, in main
>     ch = strord(url)
>   File "pagerank.py", line 81, in strord
>     result[counter] = int(i);
> ValueError: invalid literal for int(): i
> 
> and here is the full code:
> 
> def strord(url):
>     counter=0;
>     for i in url:
>        result[counter] = int(i);
>        counter += 1;
> 
>     return result;
> 
> Thanks
> 
Says that you are trying to change the character 'i' into
an integer, which won't work.  Put a print statement just
before your for loop and print out url.  It doesn't just
contain numbers (as apparently you think it does).

You should also lose the semicolons, you are writing Python
now, not PHP ;-).

You might also want to write:

def strord(url):
    return [int(i) for i in url]

Or just lose the function completely since it degrades to a
single list comprehension.

-Larry Bates


From onurb at xiludom.gro  Thu Sep 28 11:33:59 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 17:33:59 +0200
Subject: best way to get data into a new instance?
In-Reply-To: <j%QSg.44$1n3.417@news.tufts.edu>
References: <j%QSg.44$1n3.417@news.tufts.edu>
Message-ID: <451beb67$0$20460$636a55ce@news.free.fr>

John Salerno wrote:
> Let's pretend I'm creating an Employee class, which I will later
> subclass for more specific jobs.

Let's pretend it might be a good design... <g>

> Each instance will have stuff like a
> name, title, degrees held, etc. etc.
> 
> So I'm wondering, is the best way to get all this information into the
> object to just have a really long __init__ method that takes each argument?

what about optional arguments ?

class Employee(object):
  def __init__(self, id, name, **kw):
    self.id = id
    self.name = name
    self.titles = kw.get('titles', [])
    self.birthdate = kw.get(birthdate, None)
    # etc

> Does a question like this depend on how the class will be used? 

I don't think it would make sens to design anything without any hint
about how it's supposed to be used.

My 2 cents
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From bearophileHUGS at lycos.com  Sun Sep  3 08:15:43 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 3 Sep 2006 05:15:43 -0700
Subject: How to run Python file?
In-Reply-To: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
Message-ID: <1157285743.855182.283760@m73g2000cwd.googlegroups.com>

mistral:
> I have installed ActivePython
> http://www.activestate.com/Products/ActivePython/
> How I can run Python file, test.py?

Running Python scripts is easy. Load the test.py from the ActivePython
and run it.
Otherwise you can just click on the file, otherwise you can open a
shell in the dir where your py file is, and you can enter its name (so
you can see its textual output). Tell us what happens and
errors/problems you have.

Bye,
bearophile



From fredrik at pythonware.com  Fri Sep 22 05:16:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 22 Sep 2006 11:16:33 +0200
Subject: Don't use regular expressions to "validate" email addresses
	(was:Ineed some help with a regexp please)
References: <mailman.434.1158888340.10491.python-list@python.org>
	<4513a64a$0$905$636a55ce@news.free.fr>
Message-ID: <ef09lh$q68$1@sea.gmane.org>

Bruno Desthuilliers wrote:

>> if you were creating a web app with an email form... rather than try to
>> check if the email is valid...
>
> Ever bothered to read the relevant rfc ?

or the perl faq:

    http://faq.perl.org/perlfaq9.html#How_do_I_check_a_val

</F> 





From georgeryoung at gmail.com  Fri Sep 22 15:53:51 2006
From: georgeryoung at gmail.com (georgeryoung at gmail.com)
Date: 22 Sep 2006 12:53:51 -0700
Subject: returning None instead of value: how to fix?
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
Message-ID: <1158954830.953132.304220@i42g2000cwa.googlegroups.com>

sam wrote:
> i am starting to experiment with recursion, and decided to write a
> fairly trivial little program which took a float as input, then called
> a function to halve it recursively until it was less than 1:
>____________________________________________________________________
> import recursive_halve_module
>
> raw_value = raw_input('please enter the number you would like to halve: ')
> value = float(raw_value)
> final_value = recursive_halve_module.recursive_halve(value)
> print final_value
> raw_input('hit enter to close:')
> def recursive_halve(value):
>     if value < 1:
> 	print value
> 	return value
>     else:
>     	value = value/2
>     	print value
>     	if value < 1:
> 	    return value
>     	else:
> 	    recursive_halve(value)
             ^^^^^^^
This needs to be:
             return recursive_halve(value)
You were executing the function, but not returning the result.

-- George

> it works fine apart from printing 'None' instead of 'final_value' at
> the end. however, if you enter a value that is already less than 1, it
> prints 'final_value' (i.e. that very same number) just fine.
>
> now, it looks to me like only 'value' can be returned: either right at
> the beginning (for values less than 1) or when you eventually get down
> to below 1 after x function calls. but clearly that's not the case. i
> understand that 'None' is returned by default by functions in Python.
> my question is: how am i slipping into that default despite seemingly
> (to me at least) avoiding it through explicitly returning something
> else?
> 
> thanks in advance,
> 
> sam



From jaywgraves at gmail.com  Fri Sep 22 11:02:47 2006
From: jaywgraves at gmail.com (jay graves)
Date: 22 Sep 2006 08:02:47 -0700
Subject: Does Python provide "Struct" data structure?
In-Reply-To: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>
References: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>
Message-ID: <1158937367.512391.31110@m73g2000cwd.googlegroups.com>

Daniel Mark wrote:
> I have found a useful module in IPython, named 'from IPython.ipstruct
> import Struct".
> So I can use it as follows:
> ####################################
> from IPython.ipstruct import Struct
>
> mystruct = Struct(echo = 1,
>                       verb = 'Verbose',
>                       filedir = 'C:/temp',
>                       )
>
> print mystruct.filedir
> #####################################

Does 'Bunch' fit the bill?
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52308

...
jay graves



From ilias at lazaridis.com  Fri Sep 22 14:41:01 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 22 Sep 2006 11:41:01 -0700
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <1158940317.354847.323490@h48g2000cwc.googlegroups.com>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
	<mailman.451.1158926238.10491.python-list@python.org>
	<ef0uur$aa1$1@mouse.otenet.gr>
	<1158940317.354847.323490@h48g2000cwc.googlegroups.com>
Message-ID: <1158950461.818030.92410@h48g2000cwc.googlegroups.com>


Paul Boddie wrote:
> Ilias Lazaridis wrote:
... (helpful comments)

> > Have those old style classes any benefits?
>
> That you don't have to write the bizarre conceptual accident that is
> "(object)" when declaring a "top-level" class?

This was most possibly done for back-compatibility reasons.

Although introducing a change like this:

def MyOldClass(oldstyle)
def MyNewClass()

an giving lazy developers the search&replace patterns to migrate the
code would have been of benefit.

Possibly something for Python 2.6.

> Paul
>
> [1] http://www.python.org/doc/newstyle.html
> [2] http://www.python.org/doc/newstyle/

this page points to nice documentation (which I would place in top of
the list!!!):

http://www.cafepy.com/article/python_types_and_objects/ch03.html#id833463

-

"Guido's essay on new-style classes and should be your starting point."

This article should _not_ be suggested as a starting point.

.

--
http://lazaridis.com



From rNOSPAMon at flownet.com  Tue Sep 12 14:00:25 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Tue, 12 Sep 2006 11:00:25 -0700
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
	<mailman.306.1158021619.5279.python-list@python.org>
	<3qoNg.820$5i7.307@newsreading01.news.tds.net>
	<rNOSPAMon-C3CBCE.22384311092006@news.gha.chartermi.net>
	<mailman.325.1158052624.5279.python-list@python.org>
Message-ID: <rNOSPAMon-4ADF03.11002512092006@news.gha.chartermi.net>

In article <mailman.325.1158052624.5279.python-list at python.org>,
 Steve Holden <steve at holdenweb.com> wrote:

> I wouldn't necessarily say you are wrong here, It's just that the cgi 
> module has sort of "just growed", so it isn't conveniently factyored for 
> reusability in other contexts. Several people (including me) have taken 
> a look at it with a view to possible re-engineering and backed away 
> because of the difficulty of maintaining compatibility. Python 3K will 
> be an ideal oppoertunity to replace it, but until then it's probably 
> going to stay in the same rather messy but working state.

It's not necessary to re-engineer cgi, just cutting and pasting and 
editing the code as I've done would seem to suffice.

But all I'm really looking for here at this point is confirmation that 
I'm not in fact doing something stupid.  In the past I've found that 
nine times out of ten if I find myself wanting to rewrite or add 
something to a Python module it's an indication that I'm doing something 
wrong.

rg


From johnjsal at NOSPAMgmail.com  Tue Sep  5 14:08:05 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 05 Sep 2006 18:08:05 GMT
Subject: New 2.5 release date: September 19
Message-ID: <92jLg.2727$No6.53442@news.tufts.edu>

Just in case you didn't notice.


From catx at pacbell.net  Wed Sep 20 19:20:23 2006
From: catx at pacbell.net (Dave)
Date: Wed, 20 Sep 2006 23:20:23 GMT
Subject: Need some help here
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <X0kQg.3784$6S3.1182@newssvr25.news.prodigy.net>

The money's on the way!


"Kareem840" <KareemOfweet840 at hotmail.com> wrote in message 
news:1158790201.887958.84700 at k70g2000cwa.googlegroups.com...
> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.
> 




From slowpoke115 at hotmail.com  Thu Sep  7 13:07:20 2006
From: slowpoke115 at hotmail.com (Kim)
Date: Thu, 7 Sep 2006 18:07:20 +0100
Subject: Random news downloader (first script!)
Message-ID: <flYLg.2415$Tf.1772@fe26.usenetserver.com>

Random image downloader for specified newsgroup. Hi I'm writing a small script that will download random images from a specified newsgroup. I've imported yenc into the script but I can't open the image or save it. This is my first script so be gentle!

Heres the script


####random group downloader####
import nntplib
import string, random
import mimetools
import StringIO
import rfc822
import sys, base64
import os
import email
import errno
import mimetypes


SERVER = "news.server.co.uk" #Insert news server here
GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here

# connect to server
server = nntplib.NNTP(SERVER)

resp, count, first, last, name = server.group(GROUP)

for i in range(10):
    try:
        id = random.randint(int(first), int(last))
        resp, id, message_id, text = server.article(str(id))
    except (nntplib.error_temp, nntplib.error_perm):
        pass # no such message (maybe it was deleted?)
    else:
        break # found a message!
else:
    raise SystemExit

text = string.join(text, "\n")
file = StringIO.StringIO(text)

msg = mimetools.Message(file)

#display message information
#print "File type", "=>", msg.gettype()
#print "Encoding", "=>", msg.getencoding()
#print "plist", "=>", msg.getplist()

message = rfc822.Message(file)

for k, v in message.items():
    print k, "=", v

file = message.fp.read()

def yenc_decode(file):
    # <i>find body</i>
    while 1:
        line = file.readline()
        if not line:
            return None
        if line[:7] == "=ybegin":
            break
    # <i>extract data</i>
    buffer = []
    while 1:
        line = file.readline()
        if not line or line[:5] == "=yend":
            break
        if line[-2:] == "\r\n":
            line = line[:-2]
        elif line[-1:] in "\r\n":
            line = line[:-1]
        data = string.split(line, "=")
        buffer.append(string.translate(data[0], yenc42))
        for data in data[1:]:
            data = string.translate(data, yenc42)
            buffer.append(string.translate(data[0], yenc64))
            buffer.append(data[1:])
    return buffer
#the following should write to a text file
#inp = ("file","r")
#outp = open("text.txt","w")
#for line in file:
    #outp.write(line)
#print file
#outp.close()



--------------=  Posted using GrabIt  =----------------
------=  Binary Usenet downloading made easy =---------
-=  Get GrabIt for free from http://www.shemes.com/  =-




From timothy at open-networks.net  Wed Sep 13 20:34:25 2006
From: timothy at open-networks.net (Timothy Smith)
Date: Thu, 14 Sep 2006 10:34:25 +1000
Subject: threads and return values
Message-ID: <4508A391.7040007@open-networks.net>

say i'm issuing

t = Thread(target=lambda: WeeklyReportPDF.MakeReport(self.UserNameValue, 
self.PassWordValue,ReportType,self.db))
t.start()

which works just fine, BUT how do i get access to the return value of 
WeeklyReportPDF.MakeReport() ??



From eriol at huine.org  Thu Sep  7 00:43:38 2006
From: eriol at huine.org (Eriol)
Date: Thu, 07 Sep 2006 04:43:38 GMT
Subject: Where are the source files for the Python FAQs?
References: <ckHLg.25268$gY6.19867@newssvr11.news.prodigy.com>
Message-ID: <_rNLg.97560$zy5.1565871@twister1.libero.it>

Dave Kuhlman wrote:

> Can someone tell me the location of the reST source files for the
> Python FAQs. ?I have not been able to find them.

https://svn.python.org/www/trunk/pydotorg/doc/faq/ 

-- 
 Eriol - *p = NULL; - EIBTI 
 GPG Key ID 297BE0CA


From deets at nospam.web.de  Thu Sep  7 06:20:14 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 07 Sep 2006 12:20:14 +0200
Subject: help with unicode email parse
In-Reply-To: <1157622832.049404.219150@m73g2000cwd.googlegroups.com>
References: <1157622832.049404.219150@m73g2000cwd.googlegroups.com>
Message-ID: <4maa30F58ns1U2@uni-berlin.de>

neoedmund schrieb:
> i want to get the subject from email and construct a filename with the
> subject.
> but tried a lot, always got error like this:
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 4:
> ordinal not in range(128)
> 
> 
> 	msg = email.message_from_string( text )
> 	title = decode_header( msg["Subject"] )
> 	title= title[0][0]
> 	#title=title.encode("utf8")
> 	print title
> 	fn = ""+path+"/"+stamp+"-"+title+".mail"
> 
> 
> the variable "text"  come from sth like this:
> ( header, msg, octets ) = a.retr( i )
> text= list2txt( msg )
> def list2txt( l ):
> 	return reduce( lambda x, y:x+"\r\n"+y, l )
> 
> anyone can help me out? thanks.

Where does the exception occur?

Diez


From sunboy30860 at 163.com  Wed Sep 27 23:14:35 2006
From: sunboy30860 at 163.com (sunboy30860 at 163.com)
Date: 27 Sep 2006 20:14:35 -0700
Subject: How to update my web automatically by python?
Message-ID: <1159413275.681440.78320@e3g2000cwe.googlegroups.com>

How to update my web automatically by python?

I have one twiki web page
https://twiki.cern.ch/twiki/bin/view/Atlas/CSC11DQ2ReplicateToCERNCAF
In this page,the dates often need to be updated.Every time after I
produce the dates ,I plaster the date to the web manual.The dates is
produced by a python program.I want to write a python program to update
my web automatically.I hope someone could help me.Tkanks!!



From robert.kern at gmail.com  Fri Sep 15 11:24:19 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 15 Sep 2006 10:24:19 -0500
Subject: Finding dynamic libraries
In-Reply-To: <25F45089-D373-41D1-9ED9-9EC4F694E91B@sandia.gov>
References: <25F45089-D373-41D1-9ED9-9EC4F694E91B@sandia.gov>
Message-ID: <eeegj2$40f$1@sea.gmane.org>

Bill Spotz wrote:
> Hi,
> 
> Is there a way to tell an executing python script where to look for  
> dynamically-loaded libraries?
> 
> My situation is that that I am developing python wrappers for a large  
> software project.  I create python wrappers with swig, and those  
> extension modules link against dynamic libraries from the project.  I  
> have many test scripts that I would like to be able to run *prior* to  
> installing these libraries into a standard location.
> 
> I have tried altering the LD_LIBRARY_PATH and DYLD_LIBRARY_PATH  
> environment variables, both by direct assignment of os.environ and by  
> calling os.putenv(), but neither results in python being able to find  
> my dynamic libraries.

Those environment variables need to be set before the python executable starts.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From dbraden at invalid.add  Thu Sep 14 19:28:46 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 23:28:46 GMT
Subject: Linear regression in 3 dimensions
In-Reply-To: <1158221065.846852.149350@i42g2000cwa.googlegroups.com>
References: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
	<mailman.10279.1157182064.27775.python-list@python.org>
	<1157401922.417285.76870@m79g2000cwm.googlegroups.com>
	<edsfjg$3q4$1$8302bc10@news.demon.co.uk>
	<0m3Og.928$TV3.475@newssvr21.news.prodigy.com>
	<1158221065.846852.149350@i42g2000cwa.googlegroups.com>
Message-ID: <OAlOg.1274$6S3.208@newssvr25.news.prodigy.net>

bernhard.voigt at gmail.com wrote:
> Hi Dave!
> 
>> <<snip>>
>>
>> Hi Bernhard,
>> I am just starting to learn Python; could you plz tell me specifically
>> the introduction(s) you have in mind?
>>
>> TIA,
>> DaveB
> 
> Take a look at the documenation section on www.scipy.org.
> 
> Especially the old NumPy documentation (follow link to NumPy tutorial)
> and the scipy tutorial (there's an 'old' version as pdf) were helpfull.
> 
> There is also a fee based e-book on NumPy which I should buy to support
> the development, because the package is so great :-)
> 
> For matplotlib take a look at http://matplotlib.sourceforge.net/ and
> get the user's guide.
> 
> Enjoy! Bernhard
> 

Whoa, your suggestions are great! I used to use MatLab, so your 3rd 
suggestion particularly hits home. With these packages and the nature of 
Python, its starting to feel a bit like S (well, in my case, R).

Thanks mucho (oder sollte ich vielen Dank sagen?). Regards,
DaveB


From __peter__ at web.de  Fri Sep 15 04:12:32 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 15 Sep 2006 10:12:32 +0200
Subject: Check if variable is an instance of a File object
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
	<pan.2006.09.15.07.51.10.187745@gmx.net>
	<1158307282.216407.223980@p79g2000cwp.googlegroups.com>
Message-ID: <eedn74$e35$03$1@news.t-online.com>

sc_wizard29 at hotmail.com wrote:

> 
> Marc 'BlackJack' Rintsch a ecrit :
> 
>> And what do you do if you check for `file` and it isn't such an instance?
>> Raise an exception?  A no, that's something you don't like.  So what
>> else?  ;-)
> 
> Well, I prefer the idea of raising my *own* exception to the idea of
> having an unknown behavior occur (for ex : what if the argument is NOT
> a File, but is "itereable" ?)
> 
> But anyway, I guess the most "pythonic" way is to do nothing ;-)

Indeed, don't waste time to make your code less general. Why would you want
to prevent your show_lines() function from processing a list of strings or
a StringIO?
 
> One more question : how to test if 'file' is a File object ?

The file type is actually spelt lowercase, so 'file' is not a good idea as a
variable name.

>>> f = file("tmp.txt")
>>> isinstance(f, file) # isinstance(f, open) looks odd
True

isinstance() returns True for subclasses, if you don't want that either:

>>> type(f) is file
True

Peter


From andreas.huesgen at arcor.de  Tue Sep 12 14:37:45 2006
From: andreas.huesgen at arcor.de (Andreas Huesgen)
Date: Tue, 12 Sep 2006 20:37:45 +0200
Subject: python reference counting and exceptions
Message-ID: <4506FE79.8040206@arcor.de>

Hello,

I have a question refering python's reference counting/garbage 
collection in combination with thrown exceptions.

I'm very new to this mailinglist, so I hope, that this question has not 
been asked and answered before.

In c++, it is possible to write a locking system similar to the one below:


void myFunction()
{
	# create a resource lock. Locks some resource
	ResourceLock myLock;
	
	# the following line may throw an exception
	doStuff();
}


myLock is a stack variable which is destroyed as soon as the function is 
left (either by returning or because of an uncatched exception). As 
myLock is destroyed, the destructor will automatically unlock the resource.

The following python code has the same effect (at least on my system and 
my python implementation).


class MyLock(object):
     def __init__(self):
         print "MyLock.__init__"

     def __del__(self):
         print "MyLock.__del__"

def myFunction():
     print "prelock"
     lock = MyLock()
     print "postlock"

print "prefun"
try:
     myFunction()
except Exception, e:
     print str(e)
print "postfun"

output is:
prefun
prelock
MyLock.__init__
postlock
MyLock.__del__
postfun
MyLock.__init__
MyLock.__del__


However, when myFunction raises an exception, lock is not destroyed as 
soon as the function is exited but only at the end of the script


My question is: is there some reliable way to mimic the c++ code snipped 
above in python without adding a try-except-unlock-rethrow block around 
every peace of code that locks some resources.


Greets,

Andreas Huesgen


From fredrik at pythonware.com  Tue Sep 26 09:15:11 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 15:15:11 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org><slrnehfnch.6tm.jon+usenet@snowy.squish.net><mailman.569.1159192888.10491.python-list@python.org><slrnehfomg.6tm.jon+usenet@snowy.squish.net><ef8oqr$9pt$1@news.albasani.net><slrnehfqc5.6tm.jon+usenet@snowy.squish.net><4517eecf$0$14036$edfadb0f@dread15.news.tele.dk><slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
	<ef95kk$oan$1@news.albasani.net>
Message-ID: <efb94u$96h$1@sea.gmane.org>

Georg Brandl wrote:

> It says "to HTML-safe sequences". That's reasonably clear without the need
> to reproduce the exact replacements for each character.

the same documentation tells people what function to use if they want to quote *every-
thing* that might need to be quoted, so if people did actually understand everything that
was written in a reasonably clear way, this thread wouldn't even exist.

</F> 





From Benjamin.Barker at gmail.com  Sat Sep 30 10:21:15 2006
From: Benjamin.Barker at gmail.com (Ben)
Date: 30 Sep 2006 07:21:15 -0700
Subject: Storing records from a parsed file
In-Reply-To: <mailman.999.1159624370.10491.python-list@python.org>
References: <1159619474.342225.319660@h48g2000cwc.googlegroups.com>
	<mailman.999.1159624370.10491.python-list@python.org>
Message-ID: <1159626075.411507.133790@k70g2000cwa.googlegroups.com>

Ah I see. So istead of creating the classes diectly I use a facroty
class as a buffer - I tell it what I want and it makes the appropriate
instances. I am not enitely sure that applies here though (I may be
wrong)

Currently I have:

camera_list[]

class camera:
     def __init__(self,alpha,beta,gamma...):
         self.alpha=alpha
         self.beta=beta
         self.gamma=gamma
         ...

for (some conditions)
	camera_list.append(camera(alpha,beta,gamma...)

the append command creates an instance of the camera class and shoves
it at the end of a list for each itteration of the loop.

However, I want to recover various types of information from the text
file I am parsing - not just (as in the example above) camera data.
However I am trying to keep the interface the same.

so I can have collectSomeData.getData() as well as
collectSomeOtherData.getData()

In each case the getData impementation will be different to suit the
required task.

So something like:

class camera:
     def __init__(self,alpha,beta,gamma...):
         self.alpha=alpha
         self.beta=beta
         self.gamma=gamma
         ...

class list_type1
	def createList() :
		for (some conditions)
			camera_list.append(camera(alpha,beta,gamma...)

class list_type2
	def createList() :
		for (some other conditions)
			camera_list.append(camera(alpha,beta,gamma...)



data1=list_type1()
data2=list_type2()


data1.createList()
data2.createList()

The only change above is that I have taken the list appending loop and
put it into a class of its own.

However, wheras when the method list_type_2 was not in a class tings
worked fine, when put into a class as above and the method attempts to
create an instance of the camera class to append to its list it
complains.

I'm pretty sure there is a solution, and I think I will kick myself
when I work it out (or have it pointed out)!

Cheers,

Ben



From duncan.booth at invalid.invalid  Wed Sep 20 03:58:51 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 20 Sep 2006 07:58:51 GMT
Subject: Installing 2.5 with 2.4?
References: <AlTPg.2$1n3.27@news.tufts.edu>
	<1158681033.708546.132710@b28g2000cwb.googlegroups.com>
Message-ID: <Xns98445B5ED4CD0duncanbooth@127.0.0.1>

"John Machin" <sjmachin at lexicon.net> wrote:

> 1. You need to set your path manually. A BAT file called pypath.bat
> placed somewhere on your PATH and containing:
>     path c:\python%1;c:\python%1\scripts;%path%
> might come in handy. Warning: this is best used once each time you open
> up a command window; it's cumulative (Windows is not smart enough to
> remove duplicate entries) and there is a an upper limit (I believe) on
> the size of the PATH.

Windows is only smart enough to avoid duplicate entries if you tell it 
to do that. e.g.

PATH c:\python25;c:\python25\scripts;%PATH:c:\python25;c:\python25\scripts;=%

will add the two Python 2.5 folders to the head of the path without 
duplicating them.


From claudio.grondi at freenet.de  Thu Sep  7 14:56:58 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 20:56:58 +0200
Subject: Extracting text from a string
In-Reply-To: <1157654883.477932.142850@p79g2000cwp.googlegroups.com>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
	<edpou4$41s$1@newsreader2.netcologne.de>
	<1157654883.477932.142850@p79g2000cwp.googlegroups.com>
Message-ID: <edpq1n$64u$1@newsreader2.netcologne.de>

Tempo wrote:
> Okay, so it sounds like I am in the right direction. However, I am not
> sure that the text is in a string or some other format becasue the
> string is enclosed in "[" and "]", not in ' '.
> 
In case you have it like ['the string'], the actual string will be:
['the string'][0].
Just use IDLE to test your ideas:

 >>> ['the string'][0]
'the string'
 >>>

Claudio Grondi


From robert.kern at gmail.com  Wed Sep 13 08:44:45 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 13 Sep 2006 07:44:45 -0500
Subject: Extra Unittest Information
In-Reply-To: <76fd5acf0609130116rec7829aqea560ccef5bf6df3@mail.gmail.com>
References: <76fd5acf0609130116rec7829aqea560ccef5bf6df3@mail.gmail.com>
Message-ID: <ee8ufu$rjl$1@sea.gmane.org>

Calvin Spealman wrote:
> This is something I have been wanting to find for a while, but i
> haven't figured out. I really would love to know if there is some way
> I can report extra information while running unittests, and have that
> information appear along with the tracebacks, so its near the relevent
> test's results.

Several test runners (py.test, testoob, nose) will trap stdout and stderr and 
only display them if that test fails. Then you can simply use print statements 
in your test methods.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From cliff at develix.com  Thu Sep 14 06:12:31 2006
From: cliff at develix.com (Cliff Wells)
Date: Thu, 14 Sep 2006 03:12:31 -0700
Subject: Python blogging software
In-Reply-To: <45083fc0$0$4517$e4fe514c@news.xs4all.nl>
References: <mailman.6.1158132563.10491.python-list@python.org>
	<45083fc0$0$4517$e4fe514c@news.xs4all.nl>
Message-ID: <1158228751.3622.100.camel@devilbox>

On Wed, 2006-09-13 at 19:28 +0200, Irmen de Jong wrote:
> Cliff Wells wrote:
> > I'm currently using Frog, and it's decent, but lacks some fundamental
> > features (tags for one).  Since Irmen is probably going to scrap it
> > anyway, I'm kind of fishing about for something new.
> 
> That is not really true. I won't "scrap" Frog. One of the reasons
> would be that I'm using it myself ;-)
> Perhaps you confused it with the possible scrapping of the Snakelets
> appserver it runs on? I'm thinking about rebuilding Frog on one
> of the more established servers such as Turbogears.
> But haven't had the time to start this.

Yes, I saw that and took it to mean you were scrapping Frog as well (of
course, if you scrap Snakelets, I suspect any new "Frog" would have
little in common with the existing one except perhaps the moniker).

BTW, I still like Frog (it's still near the top of the Python blog heap
IMO), I just needed some things it didn't have.

Regards,
Cliff



From sjmachin at lexicon.net  Sun Sep 24 02:59:13 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 23:59:13 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159074660.273157.141760@k70g2000cwa.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
	<1159064765.214210.300630@k70g2000cwa.googlegroups.com>
	<15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
	<1159074660.273157.141760@k70g2000cwa.googlegroups.com>
Message-ID: <1159081153.409155.85050@k70g2000cwa.googlegroups.com>


Pete wrote:
> > > Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
> > > [GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
> > > Type "help", "copyright", "credits" or "license" for more information.
> > > >>> import httplib
> > > >>> conn = httplib.HTTPConnection("www.python.org")
> > > >>> conn.request("GET", "/index.html")
> > > Hello World.
> >
> >       Off-hand -- I'd suggest you do a search of your computer for any
> > occurrence of
> >       httplib.py
> >       httplib.pyc
> >       httplib.pyo
> > on the odd chance that you are picking up some corrupted version...
>

Don't search; just open the lid and read the label that's tied around
the culprit's neck; example:

| >>> import httplib
| >>> httplib.__file__
| 'c:\\python24\\lib\\httplib.pyc'

If you want to see where it finds *everything* that's imported, run
Python with the -v arg.
If you want to see where it looks for each module imported, use -vv
(that's vee vee, not dubya).

HTH,
John

HTH,
John



From jmdeschamps at gmail.com  Thu Sep 28 21:26:25 2006
From: jmdeschamps at gmail.com (jmdeschamps at gmail.com)
Date: 28 Sep 2006 18:26:25 -0700
Subject: windev vs python SOS
In-Reply-To: <mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
Message-ID: <1159493184.914483.20320@i3g2000cwc.googlegroups.com>


MC wrote:
> Bonjour !
>
> Comme tu es fran?ais, tu me coprendras.
>
> Alors :
>   - windev est ferm?, et prot?g? par des dongles. R?sultat : dongle
> perdu, en panne, ou vol?, il faut racheter une licence (c'est arriv? ?
> un ami)
>   - le langage de windev est beaucoup moins ?volu? que Python. Et,
> quand je dis beaucoup, c'est faible... Python a des possibilit?s
> ?normes en programmation proc?durale, en Orient? Objet, et, m?me, en
> programmation fonctionnelle.
>   - la structure interne de Python est extraordinaire. Vraiment.
>   - Python est tr?s facile ? apprendre. Il existe beaucoup de
> ressources, m?me en fran?ais, sur Internet, dans des livres, etc.
>   - Python est un langage stable, avec tr?s tr?s peu de bugs/probl?mes.
> Sur ce point, windev marque s?rieusement le pas. Sur certains forums
> consacr?s ? windev, le nombre de bugs signal?s ?tait effarant.
>   - les librairies disponibles pour Python couvrent un spectre beaucoup
> plus large que celles disponibles pour windev
>   - les bases de donn?es int?gr?es ? windev sont issues du vieux moteur
> "hyperfile", beaucoup trop limit?. Avec Python, on peut choisir le SGBD
> que l'on veut, sans trop de soucis. Depuis SQL-lite, jusqu'? Oracle (XE
> ou autre), on peut assumer tous les niveaux de puissance n?cessaire.
>   - avec Python, on peut faire du multi-threading, du r?parti, des
> applications web, consoles, invisibles (services), des serveurs COM,
> d?velopper des interfaces, ou en utiliser de toutes pr?tes, travailler
> sur du r?seau, piloter des ?quipements industriels, etc. etc.
>   - je n'utilise pas le "libre" comme argument, sauf pour un point : si
> pc-soft (?diteur de windev) a, un jour de grosses difficult?s, le
> produit pourrait bien disparaitre soudainement, ce qui n'est pas le cas
> de Python, maintenu par une communaut?. Or, il y a peu d'ann?es, cette
> bo?te a eu, justement, d'importants probl?mes financiers.
>
> Le gros point fort de windev, c'est un marketing tr?s agressif.
> D'ailleurs, si tu veux manger et boire ? l'oeil, va suivre les
> pr?sentations.
>
> Avant dernier point : tu aurais pu mettre ton message dans le newsgroup
> fran?ais sur Python.
>
> Dernier point : si quelqu'un veut traduire ce message, il a mon accord
> tout entier.
>
>
>
> --
> @-salutations
>
> Michel Claveau
OK, I'll try a very literal translation (if it seems to makes any sense
at all)

Since you're french, you'll understand this.

So,
     - windev is closed, and protected by dongles. Result: lost dongle,
or broke, or stolen, you have to get another licence (It happened to a
friend)
    - the windev language isn't close to have evolved like Python has.
And by isn't close, I'm putting it weakly.... Python has great
possibilities for procedural programming, Object-Oriented Programming,
and even funxctional programming
    -  The internal structure of Python is extraordinary. Really.
    - Python is very easy to learn. There are a lot of ressources, even
in french, on Internet, in books, etc.
    - Python is a stable language, with very, very few bugs/problems
    - On that point, windev really hits the mark. On some fora
pertaining to windev, the number of bugs brough up is appalling.
    - The available librairies for Python cover a much wider range than
that available for windev.
    - the integrated database of windev comes from the very old
"hyperfile" engine, much too limited. With Python, you can choose the
DB you want, without a lot of worry. From SQL-Lite to Oracle (XE or
other), you can assume any level of capacity required.
    - With Python, you can do multi-threading, RPCs, web apps, console
apps, invisible (services), COM servers, build interfaces or use
pre-existing ones, work on networking, drive industrial equipment, etc,
etc
    - I'm not using that it's "open" as an argument, except for one
point: if pc-soft (producer of windev) has , one day, some sort of big
problem, the product might suddenly disappear, which is not the case of
Python, maintained by a community. And a few years ago, it just
happened to have some important financial problems

The strong suit of windev lies in its agressive marketing.
And so speaking, if you want free food and drink, attend the
demonstrations

Before last point: you could have posted your message to the french
python newsgroup.

And last,  if someone wishes to translate this message, he has might
entire agreement

******** 
And I hope I did an okay job , michel.

Jean-Marc



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 12:31:39 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 18:31:39 +0200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
Message-ID: <4nihfbFa61lsU1@individual.net>

Saizan wrote:

> (However (not x) whould be as annoying as 1-x even if a little
> more readable (if you consider lispish parentheses readable):
> Input expression: (not (not x)&(not y)!(not (z|v)))

Did you notice that you use bitwise AND and OR here? How about

not (not x) and (not y) or (not (z or v))

(or what is "!" supposed to mean?)

BTW, not's binding is stronger than and's (IIRC). So 

not (not x) and (not y)

mutates to

x and (not y)

Regards,


Bj?rn

-- 
BOFH excuse #392:

It's union rules. There's nothing we can do about it. Sorry.



From franz.steinhaeusler at gmx.at  Sun Sep 17 15:22:25 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Sun, 17 Sep 2006 21:22:25 +0200 (CEST)
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<20060916174324.2237.20755.XPN@orion.homeinvalid>
	<q2iog21vr7sfgc2dhjb4jj5ld3nprbnbd4@4ax.com>
	<20060917074241.2241.57001.XPN@orion.homeinvalid>
	<eejs1t$rba$1@newsreader2.utanet.at>
	<20060917164725.4194.30944.XPN@orion.homeinvalid>
Message-ID: <eek79g$quu$1@newsreader2.utanet.at>

Nemesis wrote:

> Mentre io pensavo ad una intro simpatica "Franz Steinhaeusler"
> scriveva:
>
>> Hello Nemesis,
>>
>>
>> this I post with XPN! ;)
> Good :-)

Yes, it is working fine. I also find the different coloring
between quoting first and second level very clear-presented. ;)

>
>> My next try was a second newsserver.
>> (It would be nice to have it in one installation,
>> but priority is not so high)
>>
>> I have XPN in one directorry (for my default newsserver)
>> and I installed XPN in a second directory for Gmane.
>
> It is not necessary, if you are using the source version (and since we
> are on comp.lang.python I think so) you can use the command line option
> -c
>
> python xpn.py -c your_dir
>
> and XPN will store its configs and data in this directory.
>

Great! I'll check.

>> A user defineable Title bar as in Agent would be good.
>> (Then I could name the first instance "My News" or so, and the 
>> second one "Gmane". So easier navigating in Windows and also 
>> the tips in the task bar could be helpful for that.
>
> you can tweak the code if you want ;-)
> the file is xpn.py
>
>

I see.

>> The line spacing (vertically) in the header is a little higher than in
>> wxPython programs or also in Forte agent. I suspect, this is a
>> "feature" in PyGtk. narrower lines would display more headers, this
>> means more headers would be visible at once.
>
> but maybe the view will be a little more messed ... anyway I'm not sure
> I can change the size, maybe it depends on the font size.
>

You could try it, and decide if this will look better, but I don't
think, it is doable (I saw this big line spacing also on atol, the gtk
file manager on sourceforge written in gtk and C++).

>> Is Saving attachments possible? I didn't see a menu point, nor are the threads
>> are marked, having an attachment.
>
> no, XPN is definitively text-oriented. I'm not supporting attachments in
> any way.
>

The matter is, for example in wxPython mailing list, mirrored on gmane,
many attachments (source code samples) are delivered with attachments,
and this would be cool. But all the same... (maybe I apply a patch
some time in the next years...) :)

>> An option to set X-No Archive default in the subscribed groups would be
>> nice.
>
> I don't like X-No-Archive ... but anyway you can set you custome header
> to be used in every post you send in the Config Window (Posting tab)
>

Ok.

> Only an open thought:
>
> [plugins]
>> Would such an idea make sense for XPN?
>
> yes but I should implement in some way the plugin support ... and I
> don't know how to do it.
>

Not so important, and not urgent, only an idea, got from DrPython! :-)

>
>> XPN seems pretty stable and I enjoy this program more and more!
>
> thank you very much.
>

you're welcome and keep the good work!

-- 
Franz Steinhaeusler



From __peter__ at web.de  Mon Sep 18 07:24:19 2006
From: __peter__ at web.de (Peter Otten)
Date: Mon, 18 Sep 2006 13:24:19 +0200
Subject: PythonCAD question
References: <eeluh9$2tp$1@newsreader2.utanet.at>
Message-ID: <eelvij$74k$02$1@news.t-online.com>

Franz Steinhaeusler wrote:

> Hello NG,
> 
> I tried to run PythonCad on window and
> got follwoing traceback:
> 
> Traceback (most recent call last):
>   File "C:\temp\PythonCAD-DS1-R34\PythonCad.py", line 45, in ?
>     import PythonCAD.Interface.Cocoa.ImageDocument
>   File
>   "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\ImageDocument.py",
>   l
> ine 38, in ?
>     import PythonCAD.Interface.Cocoa.Globals
>   File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\Globals.py",
>   line 23
> , in ?
>     from Foundation import NSObject
> ImportError: No module named Foundation
> 
> * Waht is the module "Foundation"?
> 
> Where can I get it?

The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is
running on a Mac. The missing module is rather a symptom than the cause of
the bug.

Peter


From bj_666 at gmx.net  Sat Sep  9 10:58:32 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sat, 09 Sep 2006 16:58:32 +0200
Subject: What algorithm does Python use to evaluate: if substring in string
References: <eduhvs$46c$1@news.uit.no>
Message-ID: <pan.2006.09.09.14.58.32.150868@gmx.net>

In <eduhvs$46c$1 at news.uit.no>, Tor Erik wrote:

> I would be surprised if it is the naive:

Why?

I guess it simply calls an appropriate C library function.

Ciao,
	Marc 'BlackJack' Rintsch


From greg.kujawa at gmail.com  Sat Sep 30 00:29:39 2006
From: greg.kujawa at gmail.com (gregarican)
Date: 29 Sep 2006 21:29:39 -0700
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <1159590579.411568.186560@h48g2000cwc.googlegroups.com>

Lots of folks have pointed out large scale Python success stories
ranging from NASA to Google to Amazon. Such companies should make for
good PHB fodder in your argument. Most likely if the product manager is
just a drone you can throw in some other acceptable norm. Since
IronPython and Microsoft's .NET CLR are bound you can state that Python
is a language that runs on .NET.

Kind of like another language I work with when I get a chance. I like
Smalltalk and there's a variant that runs in the new Microsoft Vista
WPE environment (http://vistascript.net). If this was a mature option
and if I was to pitch this to a PHB or some other corporate tool I
would classify Smalltalk as an option that sits atop the cutting edge
Microsoft WPE framework.

These in-routes seem to be ways that dynamic/scripting/fringe languages
are gaining traction in larger organizations. Just wrap them up into a
Java VM, .NET CLR, etc. and off you go :-)

Roy Smith wrote:
> I'm working on a product which for a long time has had a Perl binding for
> our remote access API.  A while ago, I wrote a Python binding on my own,
> chatted it up a bit internally, and recently had a (large) customer enquire
> about getting access to it.
>
> I asked for permission to distribute the Python binding, and after a few
> weeks of winding its way through the corporate bureaucracy I got an email
> from a product manager who wants to meet with me to "understand the market
> demand for Python API before we commercialize it".
>
> Can anybody suggest some good material I can give to him which will help
> explain what Python is and why it's a good thing, in a way that a
> marketing/product management person will understand?



From jaysherby at gmail.com  Fri Sep 29 17:04:22 2006
From: jaysherby at gmail.com (Jay)
Date: 29 Sep 2006 14:04:22 -0700
Subject: analyzing removable media
In-Reply-To: <bD4Tg.2757$Y24.1240@newsread4.news.pas.earthlink.net>
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
	<1159510609.968438.111540@e3g2000cwe.googlegroups.com>
	<1159511003.768019.145680@e3g2000cwe.googlegroups.com>
	<bD4Tg.2757$Y24.1240@newsread4.news.pas.earthlink.net>
Message-ID: <1159563862.571650.144460@c28g2000cwb.googlegroups.com>

Dennis is absolutely right.  The reason you won't find a method in the
standard libraries for doing this task specifically is because python
aims to by cross-platform.  If it were to support a method that worked
in the way you describe specifically for Windows, that would
essentially break python's cross-platform compatibility.  It would
create a method that simply wouldn't work on two of the three major
operating systems.  Sorry.

You could write a method or series of methods that does the task you're
describing and have the first method in the chain detect what operating
system it is running on (which I believe is possible through the
standard library) and route the request to the appropriate OS-specific
method.

Just a thought.

Jay
Dennis Lee Bieber wrote:
> On 28 Sep 2006 23:23:23 -0700, "glenn" <glenn at tangelosoftware.net>
> declaimed the following in comp.lang.python:
>
> > Hi  Jay
> > pls excuse top post - Im actually doing this project in linux, but am
> > wanting it to be cross platform. I definitley have to cater for win32
> > also.  I was hoping that burried in sys or os or that there'd be some x
> > platform  module that did all that stuff for me
>
> 	As soon as you ask for "cross platform" and something that is
> device/OS specific... you have conflict.
>
> From the win32 extensions:
>
> win32file.GetDriveType
> int = GetDriveType()
>
> Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk,
> or network drive.
>
> Return Value
> The result is one of the DRIVE_* constants.
>
> 	I suspect Linux would require checking parameters in the fstab file.
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From eurleif at ecritters.biz  Wed Sep 27 17:45:45 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Wed, 27 Sep 2006 17:45:45 -0400
Subject: Auto color selection PIL
In-Reply-To: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>
References: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>
Message-ID: <451af0cf$0$25795$4d3efbfe@news.sover.net>

Xiaolei wrote:
> I'm trying to plot some points in an image.  Each point has an
> associating type and I'd like to have different colors (preferrably of
> high contrast) for different types.  The number of types in the data
> file is unknown a priori.  Is there a way to do this at runtime?

How about:

from colorsys import hsv_to_rgb

def colors(n):
     incr = 1.0 / n
     hue = 0.0
     for i in xrange(n):
         r, g, b = hsv_to_rgb(hue, 1.0, 1.0)
         yield int(r*255), int(g*255), int(b*255)
         hue += incr


From fakeaddress at nowhere.org  Sun Sep 17 21:01:42 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Mon, 18 Sep 2006 01:01:42 GMT
Subject: Outbound port on sockets
In-Reply-To: <12glesm56ghquc4@corp.supernews.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
	<4mv51sF7t5lmU1@uni-berlin.de> <12glesm56ghquc4@corp.supernews.com>
Message-ID: <WdmPg.1716$TV3.52@newssvr21.news.prodigy.com>

Grant Edwards wrote:
> Diez B. Roggisch wrote:
[Bryan Olson had written:]
>>> It's not the issue here, but to specify the outgoing port
>>> call bind(('', portnum)) before connect().
>> I wasn't aware of that. Cool.
> 
> It's an interesting thing to know, but I've been doing TCP
> stuff for many years and never run across a situation where
> it's something I needed to do.  If somebody in this thread
> actually does need to do it, I'd be curious bout why...

One made-up example: Unix traditionally restricts port
numbers below 1024 so that only root can use them. One might
have a white-list of trusted Unix machines, and insist
requests come from a port below 1024.

I used the empty string for the address, which Python's socket
module resolves to INADDR_ANY, but you can also use bind() to
set a particular adapter.


-- 
--Bryan


From python.list at tim.thechases.com  Sat Sep  9 11:53:36 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 09 Sep 2006 10:53:36 -0500
Subject: best split tokens?
In-Reply-To: <1157789391.693000.43470@h48g2000cwc.googlegroups.com>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>	<mailman.182.1157751737.5279.python-list@python.org>	<1157756531.475390.100210@b28g2000cwb.googlegroups.com>	<mailman.197.1157767450.5279.python-list@python.org>
	<1157789391.693000.43470@h48g2000cwc.googlegroups.com>
Message-ID: <4502E380.3000605@tim.thechases.com>

>> Any more crazy examples? :)
> 
> 'ey, 'alf a mo, wot about when 'enry 'n' 'orace drop their aitches?

I said "crazy"...not "pathological" :)

If one really wants such a case, one has to omit the standard 
practice of nesting quotes:

	John replied "Dad told me 'you can't go' but let Judy"

However, if you don't have such situations and to want to make 
'enry and 'orace 'appy, you can change the regexp to


 >>> s="He was wont to be alarmed/amused by answers that won't work"
 >>> s2="The two-faced liar--a real joker--can't tell the truth"
 >>> s3="'ey, 'alf a mo, wot about when 'enry 'n' 'orace drop 
their aitches?"

 >>> r = 
re.compile("(?:(?:[a-zA-Z][-'])|(?:[-'][a-zA-Z])|[a-zA-Z])+")

It will also choke using double-dashes:

 >>> r.findall(s), r.findall(s2), r.findall(s3)
(['He', 'was', 'wont', 'to', 'be', 'alarmed', 'amused', 'by', 
'answers', 'that', "won't", 'work'], ['The', 'two-faced', 
'liar--a', 'real', "joker--can't", 'tell', 'the', 'truth'], 
["'ey", "'alf", 'a', 'mo', 'wot', 'about', 'when', "'enry", "'n", 
"'orace", 'drop', 'their', 'aitches'])

Or you could combine them to only allow infix dashes, but allow 
apostrophes anywhere in the word, including the front or back, 
one could use:

 >>> r = 
re.compile("(?:(?:[a-zA-Z]')|(?:'[a-zA-Z])|(?:[a-zA-Z]-[a-zA-Z])|[a-zA-Z])+")
 >>> r.findall(s), r.findall(s2), r.findall(s3)
(['He', 'was', 'wont', 'to', 'be', 'alarmed', 'amused', 'by', 
'answers', 'that', "won't", 'work'], ['The', 'two-faced', 'liar', 
'a', 'real', 'joker', "can't", 'tell', 'the', 'truth'], ["'ey", 
"'alf", 'a', 'mo', 'wot', 'about', 'when', "'enry", "'n", 
"'orace", 'drop', 'their', 'aitches'])


Now your spell-checker has to have the "dropped initial or 
terminal letter" locale... :)

-tkc






From skip at pobox.com  Tue Sep  5 13:47:51 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 12:47:51 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157477207.223616.210780@h48g2000cwc.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
Message-ID: <17661.47175.499867.663155@montanaro.dyndns.org>


    >> I think your whole experience is based on it.

    >> But shouldn't a significant feature like that be explained in the
    >> Python manuals? Why should I go dig up Sqlite FAQs to learn what
    >> should have been in the manuals?

I don't know, but I will take a stab at a plausible explanation.  First,
sqlite support has only been in Python for a month or three.  Its first
official unveiling will be when 2.5 is released.  Second, it's common when
wrapping functionality into Python to rely on the documentation for the
thing being wrapped.  The thinner the wrapper, the more you tend to rely on
the underlying documentation.  Also, the more functionally rich the thing
you've wrapped, the more you rely on the underlying documentation.  I
wouldn't be at all surprised if the pysqlite author operated under that
assumption.  That the Python developers didn't pick up on the issue is not
surprising.  I'm not sure how many of them are (py)sqlite users, probably
relatively few.

Skip


From zeezlo at yahoo.com  Tue Sep 26 23:07:51 2006
From: zeezlo at yahoo.com (zeezlo at yahoo.com)
Date: 26 Sep 2006 20:07:51 -0700
Subject: preserving color ouput of a shell command via os.popen()
In-Reply-To: <1159325909.557008.107040@k70g2000cwa.googlegroups.com>
References: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>
	<1159325909.557008.107040@k70g2000cwa.googlegroups.com>
Message-ID: <1159326471.168312.238950@m7g2000cwm.googlegroups.com>

> See the difference? :)

Brett, not only do I see the difference but I actually see it in color,
too! : )

Thanks for your help,

Juerg



From andrew-news at andros.org.uk  Fri Sep  8 15:17:00 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Fri, 08 Sep 2006 20:17:00 +0100
Subject: Linear regression in 3 dimensions
In-Reply-To: <1157401922.417285.76870@m79g2000cwm.googlegroups.com>
References: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
	<mailman.10279.1157182064.27775.python-list@python.org>
	<1157401922.417285.76870@m79g2000cwm.googlegroups.com>
Message-ID: <edsfjg$3q4$1$8302bc10@news.demon.co.uk>

Bernhard,

Levenberg-Marquardt is a good solution when you want to solve a general 
non-linear least-squares problem. As Robert said, the OPs problem is 
linear and Robert's solution exploits that. Using LM here is unnecessary 
and I suspect a fair bit less efficient (i.e. slower).

- Andrew


bernhard.voigt at gmail.com wrote:
> Hi Robert,
> 
> I'm using the scipy package for such problems. In the submodule
> scipy.optimize there is an implmentation of a least-square fitting
> algorithm (Levenberg-Marquardt) called leastsq.
> 
> You have to define a function that computes the residuals between your
> model and the data points:
> 
> import scipy.optimize
> 
> def model(parameter, x, y):
>     a, b, c = parameter
>     return a*x + b*y + c
> 
> def residual(parameter, data, x, y):
>     res = []
>     for _x in x:
>         for _y in y:
>             res.append(data-model(parameter,x,y)
>     return res
> 
> params0 = [1., 1.,1.]
> result = scipy.optimize.leastsq(resdiual, params0, (data,x,y))
> fittedParams = result[0]
> 
> If you haven't used numeric, numpy or scipy before, you should take a
> look at an introduction. It uses some nice extended array objects,
> where you can use some neat index tricks and compute values of array
> items without looping through it.
> 
> Cheers! Bernhard
> 
> 
> 
> Robert Kern wrote:
>> wirecom at wirelessmeasurement.com wrote:
>>> Hi all,
>>>
>>> I am seeking a module that will do the equivalent of linear regression in
>>> 3D to yield a best fit a plane through a set of points (X1, Y1, Z1), (X1,
>>> Y1, Z1),... (Xn, Yn, Zn).
>>>
>>> The resulting equation to be of the form:
>>>
>>>  Z = aX + bY + c
>>>
>>> The function I need would take the set of points and return a,c & c Any
>>> pointers to existing code / modules would be very helpful.
>> Well, that's a very unspecified problem. You haven't defined "best."
>>
>> But if we make the assumption that you want to minimize the squared error in Z,
>> that is minimize
>>
>>    Sum((Z[i] - (a*X[i] + b*Y[i] + c)) ** 2)
>>
>> then this is a standard linear algebra problem.
>>
>> In [1]: import numpy as np
>>
>> In [2]: a = 1.0
>>
>> In [3]: b = 2.0
>>
>> In [4]: c = 3.0
>>
>> In [5]: rs = np.random.RandomState(1234567890)  # Specify a seed for repeatability
>>
>> In [6]: x = rs.uniform(size=100)
>>
>> In [7]: y = rs.uniform(size=100)
>>
>> In [8]: e = rs.standard_normal(size=100)
>>
>> In [9]: z = a*x + b*y + c + e
>>
>> In [10]: A = np.column_stack([x, y, np.ones_like(x)])
>>
>> In [11]: np.linalg.lstsq?
>> Type:           function
>> Base Class:     <type 'function'>
>> String Form:    <function lstsq at 0x6df070>
>> Namespace:      Interactive
>> File:
>> /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/numpy-1.0b2.dev3002-py2.4-macosx-10.4-ppc.egg/numpy/linalg/linalg.py
>> Definition:     np.linalg.lstsq(a, b, rcond=1e-10)
>> Docstring:
>>      returns x,resids,rank,s
>>      where x minimizes 2-norm(|b - Ax|)
>>            resids is the sum square residuals
>>            rank is the rank of A
>>            s is the rank of the singular values of A in descending order
>>
>>      If b is a matrix then x is also a matrix with corresponding columns.
>>      If the rank of A is less than the number of columns of A or greater than
>>      the number of rows, then residuals will be returned as an empty array
>>      otherwise resids = sum((b-dot(A,x)**2).
>>      Singular values less than s[0]*rcond are treated as zero.
>>
>>
>> In [12]: abc, residuals, rank, s = np.linalg.lstsq(A, z)
>>
>> In [13]: abc
>> Out[13]: array([ 0.93104714,  1.96780364,  3.15185125])
>>
>> --
>> Robert Kern
>>
>> "I have come to believe that the whole world is an enigma, a harmless enigma
>>   that is made terrible by our own mad attempt to interpret it as though it had
>>   an underlying truth."
>>    -- Umberto Eco
> 


From fredrik at pythonware.com  Fri Sep 29 10:56:40 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 16:56:40 +0200
Subject: How to iterate through a sequence, grabbing subsequences?
In-Reply-To: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
References: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
Message-ID: <efjc77$f8d$1@sea.gmane.org>

Matthew Wilson wrote:

> I wrote a function that I suspect may already exist as a python builtin,
> but I can't find it:
> 
> def chunkify(s, chunksize):
>     "Yield sequence s in chunks of size chunksize."
>     for i in range(0, len(s), chunksize):
>         yield s[i:i+chunksize]
> 
> I wrote this because I need to take a string of a really, really long
> length and process 4000 bytes at a time.
> 
> Is there a better solution?

what's wrong with your solution ?

</F>



From jaysherby at gmail.com  Thu Sep 14 00:19:31 2006
From: jaysherby at gmail.com (Jay)
Date: 13 Sep 2006 21:19:31 -0700
Subject: time-based point system
In-Reply-To: <JLSdnWgZ4Kc3S5XYnZ2dnUVZ_rKdnZ2d@speakeasy.net>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
	<1158205582.339882.23000@i3g2000cwc.googlegroups.com>
	<HM6dnUgt9fG0TJXYnZ2dnUVZ_uydnZ2d@speakeasy.net>
	<1158206615.529997.195940@i42g2000cwa.googlegroups.com>
	<JLSdnWgZ4Kc3S5XYnZ2dnUVZ_rKdnZ2d@speakeasy.net>
Message-ID: <1158207571.225877.195090@i3g2000cwc.googlegroups.com>

I'm sorry.  I never considered what you said about the relationship
about the input and output.  I'll take my thread elsewhere to a math
board.


Erik Max Francis wrote:
> Jay wrote:
>
> > That function is absolutely no good for this situation.
> >
> > 1. Take a small number.
> > 5.4348809719085693
> >
> > 2. Put it in the function.
> > f(5.4348809719085693) = 1/5.4348809719085693
> >
> > 3. Get a large number???
> > 0.18399666987533483
> >
> > That number is even smaller.  I want a large one coming out.
>
> f(x) = 1/x is just one example of a function that has the property of
> being a "negative function" -- the smaller number you put in, the larger
> number you get out, and vice versa.  Your statement didn't clearly
> indicate that the outputs need to be bigger than the inputs, just that
> they need to be bigger the smaller the outputs are.  The more general
> function would be f(x) = A/(x - B).  Choose A and B as desired so that
> f(x) > x for all x you care about.  Or choose another function, like
> f(x) = A - B x or any number of other functions.  There literally are an
> infinite number of possibilities.
>
> The point is, as I've already said, you haven't given nearly enough
> information to give you a useful answer.  You haven't indicated, for
> instance, anything at all about the domain or range of the function that
> you want:  What values do you need to plug in?  What range of values do
> you need to get out?  Once you have clarified to yourself what
> properties you want, that will help you define the function.
>
> At this point you're the only one who knows what properties you want,
> and unless you define them up front, it results in a very unsatisfactory
> guessing game of proposing a function, you telling me what's wrong with
> it, and repeat until either or both of us get bored.
>
> And, by the way, this is a question about mathematics, and so has
> nothing to do specifically with Python.
>
> --
> Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
>   San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
>    Get married, but never to a man who is home all day.
>     -- George Bernard Shaw



From larry.bates at websafe.com  Wed Sep 27 16:04:45 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 27 Sep 2006 15:04:45 -0500
Subject: OT: productivity and long computing delays
In-Reply-To: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
Message-ID: <FvCdnQFOKJjERIfYnZ2dnUVZ_qidnZ2d@comcast.com>

Paul Rubin wrote:
> I'm doing something where I frequently but unpredictably (i.e. I can't
> plan for it in advance) hit a snag that requires me to rebuild a large
> project.  The rebuild takes a couple hours.  During that time, I'm
> twiddling my thumbs and/or posting here, i.e. not getting anything
> useful done.  But the delay is not long enough that I can really
> switch to another project for a while.  
> 
> Anyone got any suggestions?  How do you deal with this?  It could be
> mitigated with a faster computer (I'm using a 1.2 ghz Pentium M) but
> the overall task isn't large enough to justify going out and buying
> one.  Anyway, I did the same build on a 2 ghz Athlon 64 and was
> surprised that the speedup was only 35% or so.  I'd have to get a
> multiprocessor box to obtain really substantial gains.

Just guessing - A significant portion of the time might be I/O
that is disk bound so faster CPU won't help.  If that's the case
faster hard drive (10K or even 15K rpm) or a striped drive array
could help.  You should also check memory, if CPU starts
swapping, the swap I/O will kill your performance.

-Larry Bates


From paul at boddie.org.uk  Tue Sep 26 11:41:45 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 26 Sep 2006 08:41:45 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
	<1159278999.374338.76170@m73g2000cwd.googlegroups.com>
	<1159280328.671934.42180@h48g2000cwc.googlegroups.com>
Message-ID: <1159285305.562672.152460@d34g2000cwd.googlegroups.com>

George Sakkis wrote:
>

[Oslo, Norway short of 300-500 Java developers]

> Um, how many of these "lots of Java developers looking for work" live
> in, or are willing to relocate to, Oslo?

Well, I really meant to say that the "lots of Java developers" I've
seen actually are in Oslo. Certainly, every time this topic comes up in
some article, people tend to complain about a mismatch between employer
claims and their own experiences trying to get hired, and there
wouldn't be much of a debate if those people were not within commuting
distance.

> Another point might be that many ads prefix the offered position with "senior", and my
> guess is that most of those looking for work don't really qualify, for any reasonable
> definition of "senior".

It's quite possible that a lot of the people out in the job market
don't have the experience with Java that employers supposedly demand,
although in many cases that isn't anything to do with how long they've
been in the business (one definition of "senior"). However, I'd
question the need only for senior developers in a market for a
particular technology, since it would suggest that either everyone
seems to think that they're doing rocket science, or the technology
isn't the most appropriate or efficient way to do the work (especially
given the supposed lack of developers).

However, knowing the corporate/political undercurrents behind some of
these recruitment "advertorials", I might suggest that many of these
supposedly available Java positions don't actually exist. If the
handful of advertised Python positions do actually exist, on the other
hand, we can at least estimate the prospects of Python practitioners
with more certainty.

Paul



From steve at holdenweb.com  Tue Sep 26 14:52:01 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 14:52:01 -0400
Subject: identifying new not inherited methods
In-Reply-To: <45195B14.3020609@hotmail.com>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>	<mailman.713.1159288933.10491.python-list@python.org>
	<45195B14.3020609@hotmail.com>
Message-ID: <efbsqu$pfg$1@sea.gmane.org>

Chaz Ginger wrote:
> Steve Holden wrote:
> 
>>malkarouri at gmail.com wrote:
>>
>>>Hi,
>>>
>>>I am writing a library in which I need to find the names of methods
>>>which are implemented in a class, rather than inherited from another
>>>class. [...]
> 
> 
> You don't really want to use dir(A), since this will not pick up all the 
>   classes that make up A.  Don't you want to use the MRO instead?
> 
Tell me, what won't appear in the dir() of A that *will* appear in the 
dir() of a subclass of A? Seems to me you're trying to overcomplicate 
things.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From hg at nospam.com  Wed Sep 13 15:13:33 2006
From: hg at nospam.com (hg)
Date: Wed, 13 Sep 2006 14:13:33 -0500
Subject: Idle 1.1.3 class browser + a few questions
Message-ID: <eRYNg.138393$LF4.31675@dukeread05>

Hi,

Is there a way to:

1) open the class browser automatically on the file opening
2) have the class browser updated when functions/classes ... are added
to the file
3) have a vertical scroll bar
4) have line numbers

Thanks,

Philippe


From roland.csaszar at knapp.com  Thu Sep 21 05:02:30 2006
From: roland.csaszar at knapp.com (Roland.Csaszar)
Date: 21 Sep 2006 09:02:30 GMT
Subject: Is it possible to save a running program and reload next time ?
References: <mailman.386.1158824225.10491.python-list@python.org>
Message-ID: <slrneh4l95.bl9.roland.csaszar@localhost.localdomain>

On 2006-09-21, fdu.xiaojf at gmail.com <fdu.xiaojf at gmail.com> wrote:
> Is it possible that the program can save all running data to a file when 
> I want it to stop, and can reload the data and continue to run from 
> where it stops when the computer is free ?

Well, on Irix you could use cpr
<http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=man&fname=/usr/share/catman/u_man/cat1/cpr.z>
but i don't know if your OS supports a similar feature

-- 
Roland Csaszar -----------  \\\   ///  -------------- +43 316 495 2129
Software Development ------  \\\ ///  ----------- http://www.knapp.com 
KNAPP Logistics Automation -  \\V//  - mailto:roland.csaszar at knapp.com


From ldo at geek-central.gen.new_zealand  Sun Sep 24 06:13:37 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 22:13:37 +1200
Subject: Automatic import PEP
References: <mailman.491.1158981359.10491.python-list@python.org>
Message-ID: <ef5lmn$h1k$3@lust.ihug.co.nz>

In message <mailman.491.1158981359.10491.python-list at python.org>, Connelly
Barnes wrote:

> The main point of autoimp is to make usage of the interactive Python
> prompt more productive by including "from autoimp import *" in the
> PYTHONSTARTUP file.

The main problem I have with your idea is that any kind of import statement
with wildcards in it automatically starts my bogosity meter flashing
its "RED ALERT" sign and clanging all its alarm bells.


From frank at chagford.com  Fri Sep  8 03:03:51 2006
From: frank at chagford.com (Frank Millman)
Date: 8 Sep 2006 00:03:51 -0700
Subject: Question about subclassing - version 2
Message-ID: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>

Hi all

I recently posted a question about subclassing. I did not explain my
full requirement very clearly, and my proposed solution was not pretty.
I will attempt to explain what I am trying to do more fully, and
describe a possible solution. It is still not pretty, so I would
appreciate any comments.

I have a base class (ClassA), which is an abstract class. Most of the
methods and attributes are common to all subclasses, so there is not
much they have to override.

I have a subclass (ClassB) of my base class, which is also abstract. It
represents a subset of ClassA, and overrides some of its methods. When
I create a concrete class (is that the correct term?) I subclass either
from ClassA or from ClassB.

Now I want to represent a different subset of ClassA, which overrides
some of its methods. This subset can apply to ClassB as well as to
ClassA.

In pseudo terms, I want ClassA1, ClassA2, ClassB1, and ClassB2 where A1
is the base class, B overides some methods, and 2 overrides other
methods, and I want to subclass from any of them.

My original solution involved passing 1 or 2 as an argument, and
putting some code into __init__ which redefined certain methods if it
received a 2. This worked, but it meant that I could not then easily
redefine the method again in a concrete class.

My new idea is to use multiple inheritance. This is how it would work.

class ClassA(object):
    def __init__(self):
        pass
    def test1(self):
        print 'Base method 1'
    def test2(self):
        print 'Base method 2'

class ClassB(ClassA):
    def __init__(self):
        ClassA.__init__(self)
    def test1(self):
        print 'Overriding method 1'

class Class2(object):
    def test2(self):
        print 'Overriding method 2'

Now I can set up the following concrete classes -

class ClassA1(ClassA):
    def __init__(self):
        ClassA.__init__(self)

class ClassA2(Class2,ClassA):
    def __init__(self):
        ClassA.__init__(self)

class ClassB1(ClassB):
    def __init__(self):
        ClassB.__init__(self)

class ClassB2(Class2,ClassB):
    def __init__(self):
        ClassB.__init__(self)

Now if I do the following, I get the results shown, which is what I
want -

ClassA1().test1() - 'Base method 1'
ClassA1().test2() - 'Base method 2'
ClassB1().test1() - 'Overriding method 1'
ClassB1().test2() - 'Base method 2'
ClassA2().test1() - 'Base method 1'
ClassA2().test2() - 'Overriding method 2'
ClassB2().test1() - 'Overriding method 1'
ClassB2().test2() - 'Overriding method 2'

Now for the real test -

class ClassC3(Class2,ClassB):
    def __init__(self):
       ClassB.__init__(self)
    def test1(self):
        print 'Overriding method 1 from ClassC3'
    def test2(self):
        print 'Overriding method 2 from ClassC3'

ClassC3().test1() - 'Overriding method 1 from ClassC3'
ClassC3().test2() - 'Overriding method 2 from ClassC3'

So it works. However, using multiple inheritance is not ideal, and I
believe it is not even supported in some languages. Can anyone suggest
a better way of tackling this problem?

Thanks

Frank Millman



From fredrik at pythonware.com  Wed Sep 13 01:40:47 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 07:40:47 +0200
Subject: best small database?
In-Reply-To: <1158125595.442379.287900@e63g2000cwd.googlegroups.com>
References: <0rdNg.6440$c22.5757@trnddc07>	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
	<1158125595.442379.287900@e63g2000cwd.googlegroups.com>
Message-ID: <ee85kv$dpo$1@sea.gmane.org>

Blair P. Houghton wrote:

> Can't be any harder than switching between incompatible filesystems,
> unless you assume it should "just work...".

so what file systems are you using that don't support file names and 
binary data ?

</F>



From fakeaddress at nowhere.org  Sat Sep  2 13:22:24 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Sat, 02 Sep 2006 17:22:24 GMT
Subject: Threads and Progress Bar
In-Reply-To: <mailman.10268.1157140241.27775.python-list@python.org>
References: <mailman.10244.1157107721.27775.python-list@python.org>	<_a_Jg.1459$v%4.1046@newsread1.news.pas.earthlink.net>
	<mailman.10268.1157140241.27775.python-list@python.org>
Message-ID: <k5jKg.13927$%j7.9405@newssvr29.news.prodigy.net>

Ritesh Raj Sarraf wrote:
[...]
> Here's the function, download_from_web() which calls the progress bar:
> main.py
> def download_from_web(sUrl, sFile, sSourceDir, checksum):
[...]
>         temp = urllib2.urlopen(sUrl)
>         headers = temp.info()
>         size = int(headers['Content-Length'])
>         data = open(sFile,'wb')

Incidentally, not all HTTP responses with bodies have
a 'Content-Length' header.


-- 
--Bryan


From wolfgang.keller.nospam at gmx.de  Sat Sep 23 10:09:03 2006
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: Sat, 23 Sep 2006 16:09:03 +0200
Subject: One program in different GUI Toolkits
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
Message-ID: <0001HW.C13B0C9F00258284F0488530@news.individual.de>

On Wed, 20 Sep 2006 08:27:30 +0200, Franz Steinhaeusler wrote
(in article <eeqn0i$d8n$1 at newsreader2.utanet.at>):

> What about for example wxProject?

What about something that could be actually useful for end-users? >:->
 
E.g. a GUI wrapper for Httrack?

The "back-end" is already there:

http://www.satzbau-gmbh.de/staff/abel/httrack-py/

So the work could really focus on the GUI.

BTW: There's a book from MITP "Python und GUI Toolkits" (in German) that 
shows how to implement a given example program with Tkinter, Qt, wxWidgets 
and GTK+2.

Sincerely,

Wolfgang Keller

-- 
My email-address is correct.
Do NOT remove ".nospam" to reply.



From fredrik at pythonware.com  Mon Sep 25 16:22:36 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 22:22:36 +0200
Subject: ANN: dmath 0.9 - Math routines for the Decimal type
In-Reply-To: <f4cc03640609251305r27d5abe0h9148ad06e265fbbb@mail.gmail.com>
References: <ef9bab$fbj$1@eeyore.INS.cwru.edu>	<ef9brp$hjv$1@eeyore.INS.cwru.edu>
	<f4cc03640609251305r27d5abe0h9148ad06e265fbbb@mail.gmail.com>
Message-ID: <ef9dqc$p21$1@sea.gmane.org>

km wrote:

> and how different is MIT licence to GPL ?

wikipedia has the answer:

     http://en.wikipedia.org/wiki/BSD_and_GPL_licensing

(that article talks about BSD instead of MIT, but those two license are 
pretty much the same).

 > could u elaborate on that ?

who's u ?

</F>



From morpheus at spam.no  Sat Sep 16 16:06:42 2006
From: morpheus at spam.no (Morpheus)
Date: Sat, 16 Sep 2006 22:06:42 +0200
Subject: wxTimer problem
References: <1158349650.327255.135060@k70g2000cwa.googlegroups.com>
Message-ID: <pan.2006.09.16.20.06.38.118285@spam.no>

On Fri, 15 Sep 2006 12:47:30 -0700, abcd wrote:

> I have a python script which creates a wx.App, which creates a wx.Frame
> (which has a wx.Timer).
> 
> looks sorta like this:
> 
> class MyProgram:
>     def __init__(self):
>         self.app = MyApp(0)
>         self.app.MainLoop()
> 
> class MyApp(wx.App):
>     def OnInit(self):
>         self.myframe= MyFrame()
>         self.myframe.Show(True)
>         self.SetTopWindow(self.myframe)
>         return True
> 
> class MyFrame(wx.Frame):
>     def __init__(self):
>        # do some other stuff here
> 
>        # setup the timer
>         self.timer = wx.Timer(self)
>         self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)
>         self.timer.Start(100)
> 
>     def killTimer(self):
>         self.Unbind(wx.EVT_TIMER)
>         self.timer.Stop()
>         self.timer = None
> 
> 
> ....that's the jist of it.
> 
> Anyhow, so I startup python and import my script, which loads up the
> wx.App, frame and all.
> 
> foo = MyProgram()
> 
> 
> Then I close the frame.  when the frame is closed it calls killTimer.
> This method gets called and no exceptions occur.
> 
> Then...I create a new instance of the app and try to load the frame
> again.
> 
> foo = MyProgram()
> 
> ...and I am getting this error:
> 
> "timer can only be started from the main thread"
> 
> how can I fix this??
> 
> FYI, my script is being started by a new thread each time, so
> ultimately we have....
> 
> def startProgram():
>     foo = MyProgram()
> 
> threading.Thread(target=startProgram).start()
> 
> 
> Thanks in advance.

You must not access wx from more than one thread. Read their wiki about
this and about the appropriate workaround.

Morpheus




From fccoelho at gmail.com  Fri Sep  8 06:58:27 2006
From: fccoelho at gmail.com (Flavio)
Date: 8 Sep 2006 03:58:27 -0700
Subject: xmingw and f2py
In-Reply-To: <slrneg2h90.d48.nick@irishsea.home.craig-wood.com>
References: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>
	<slrneg2h90.d48.nick@irishsea.home.craig-wood.com>
Message-ID: <1157713106.907124.91050@i3g2000cwc.googlegroups.com>

Thanks Nick,

It seems that xmingw package in gentoo is the same as the mingw on
debian, from the directory structure and executables you mention.

I'll give it a try and if works with f2py, I'll post a complete
tutorial after I am done for other people to follow.

Thanks a lot.


Nick Craig-Wood wrote:
> Flavio <fccoelho at gmail.com> wrote:
> >  has anyone tried to build extensions for win32 on Linux using
> >  xmingw?
>
> I don't know about xmingw, but we use mingw on linux to compile stuff
> for windows all the time.  (We use the mingw package under debian)
>
> We build extensions using mingw but linked to the link library of the
> official python2.4 build.
>
> Here are some instructions which you'll need to adapt to your setup
>
> /misc/windows is a smb mounted windows machine
>
> # Linking with the distributed python
> #
> # http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/software/python/cygwin.html
> #
> # On a windows machine
> # install the latest windows python (2.4.3.msi) from www.python.org
> # Copy the header files into the mingw installation
> cp -av /misc/windows/Python24/include /usr/i586-mingw32msvc/include/python2.4
> # Download pexports from here
> # http://www.emmestech.com/software/cygwin/pexports-0.43/download_pexports.html
> # unpack pexports.exe
> unzip pexports-0.43.zip
> # Fetch python dll from the windows machine
> cp -av /misc/windows/WINNT/system32/python24.dll .
> # Extract the exported symbols
> wine pexports python24.dll > python24.def
> # Create the link library
> /usr/i586-mingw32msvc/bin/dlltool --dllname python24.dll --def python24.def --output-lib libpython2.4.a
> # Move the files into the correct place
> mv -i python24.dll python24.def libpython2.4.a /usr/i586-mingw32msvc/lib/
>
> After that lot you can build python extensions with mingw under linux,
> using -lpython2.4
>
> --
> Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick



From andi.clemens at gmx.net  Sun Sep 17 08:26:50 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Sun, 17 Sep 2006 14:26:50 +0200
Subject: matplotlib: TypeError: a float is required
Message-ID: <eejesq$guv$1@online.de>

Hi,

everytime I try to plot a bar with matplotlib I get the following error 
message:
Traceback (most recent call last):
   File "bar_stacked.py", line 13, in ?
     p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
   File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 
1641, in bar
     ret =  gca().bar(*args, **kwargs)
   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 
2485, in bar
     xerr = asarray([xerr]*nbars, Float)
   File "/usr/lib/python2.4/site-packages/Numeric/Numeric.py", line 134, 
in asarray
     return multiarray.array(a, typecode, copy=0, savespace=savespace)
TypeError: a float is required


So I guess it has something to do with Numeric.py, but I can't figure 
out what the problem is. I tried to google but found nothing...

Anyone has the same problem? I can plot all kinds of graphics with 
matplotlib, but the only type I'm interested in (bars) will not work.

I tried the examples coming with matplotlib, but even those don't work.

Here is the example code which produces the above error:
#!/usr/bin/env python
# a stacked bar plot with errorbars
from pylab import *

N = 5
menMeans   = (20, 35, 30, 35, 27)
womenMeans = (25, 32, 34, 20, 25)
menStd     = (2, 3, 4, 1, 2)
womenStd   = (3, 5, 2, 3, 3)
ind = arange(N)    # the x locations for the groups
width = 0.35       # the width of the bars: can also be len(x) sequence

p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
p2 = bar(ind, womenMeans, width, color='y',
          bottom=menMeans, yerr=menStd)

ylabel('Scores')
title('Scores by group and gender')
xticks(ind+width/2., ('G1', 'G2', 'G3', 'G4', 'G5') )
yticks(arange(0,81,10))
legend( (p1[0], p2[0]), ('Men', 'Women') )

show()


Anyone has matplotlib installed and gets the same error?
I need to create some charts for a project I do at work, so maybe there 
are other modules out there creating charts??

Andi

-- 
homepage: http://www.the-grudge.net
ICQ: 9450091
Skype: thegrudge_2
Mozilla Thunderbird 1.5.0.5
Arch Linux


From peter.maas at somewhere.com  Sat Sep  2 15:48:49 2006
From: peter.maas at somewhere.com (Peter Maas)
Date: Sat, 02 Sep 2006 21:48:49 +0200
Subject: What do you want in a new web framework?
In-Reply-To: <1hkujsw.1kfwx315rpfd3N%aleax@mac.com>
References: <1156100331.329889.216340@p79g2000cwp.googlegroups.com>
	<pan.2006.08.20.19.48.34.996227@gmx.net>
	<1156156636.515678.118210@75g2000cwc.googlegroups.com>
	<4jele2pe011di99c5dnq4olclglrkieggc@4ax.com>
	<1hkgnbt.ebn4o1111ftp0N%aleax@mac.com> <ecicsj$91v$1@online.de>
	<mailman.9742.1156369727.27775.python-list@python.org>
	<ed27uk$ihd$2@online.de> <1hkujsw.1kfwx315rpfd3N%aleax@mac.com>
Message-ID: <edcn7g$duh$1@online.de>

Alex Martelli wrote:
> Peter Maas <peter.maas at somewhere.com> wrote:
> 
>> Cliff Wells wrote:
>>> On Wed, 2006-08-23 at 22:13 +0200, Peter Maas wrote:
>>>> Alex Martelli wrote:
>> [...]
>>>>> I have already suggested to the BDFL that he can remedy this situation
>>>>> in Py3k: all he has to do, of course, is to add a LOT more keywords.
>>>> Here is another remedy: he adds one of the frameworks to the standard
>>>> library :)
>>> That didn't help Tk maintain a monopoly on Python GUI toolkits.
>> I must not be a monopoly. A center of gravity would be nice, too.
> 
> <http://www.youtube.com/watch?v=hFGz-t5R0BE?> ....
> 
> [it helps to know some Italian, 

No problem: "Centro di Gravit? Permanente" = "permanent center of gravity" :)

Peter Maas, Aachen


From email at christoph-haas.de  Fri Sep 22 11:10:28 2006
From: email at christoph-haas.de (Christoph Haas)
Date: Fri, 22 Sep 2006 17:10:28 +0200
Subject: Global module variables as default parameters
Message-ID: <200609221710.28582.email@christoph-haas.de>

Hi, list...

I wondered if it's possible to use global (module) variables as default 
parameters. A simple working example:

----------------------------------------
#!/usr/bin/python

globalvar = 123

def test(foo=globalvar):
  print foo

test()
----------------------------------------

Running this script prints "123". That's what I expected.

Now I'm trying the same thing in a module context. A non-working example:

test.py
----------------------------------------
#!/usr/bin/python

import TestModule

TestModule.globalvar = 123
TestModule.def1()
TestModule.def2()
----------------------------------------

TestModule.py
----------------------------------------
globalvar = 0

def def1():
  print globalvar

def def2(foo=globalvar):
  print foo
----------------------------------------

Running the test.py script prints "123" and "0". So accessing the globalvar 
in def1() works. But if I try to use the global variable as a default 
parameter in def2() it uses the default "0". What is the difference 
between these two? Are there contexts of default parameters?

Thanks for any enlightenment.

 Christoph


From fredrik at pythonware.com  Fri Sep 22 07:56:56 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 22 Sep 2006 13:56:56 +0200
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
Message-ID: <ef0j28$p91$1@sea.gmane.org>

Ilias Lazaridis wrote:

> note: I am aware about search engines.

but you're incapable of using them, or ?

> I ask for documentation which other developers have found useful

most recent Python books contains good discussions of the things you're
asking for.  maybe you should buy a book ?

</F> 





From ravenheart.j at gmail.com  Mon Sep 25 14:06:02 2006
From: ravenheart.j at gmail.com (ravenheart)
Date: Mon, 25 Sep 2006 19:06:02 +0100
Subject: Emphasizing a gtk.Label
In-Reply-To: <mailman.586.1159206166.10491.python-list@python.org>
References: <ef91fd$ngg$1@hefestos.uned.es>
	<mailman.586.1159206166.10491.python-list@python.org>
Message-ID: <ef95pm$rpp$1@hefestos.uned.es>

Very useful. Thanks a lot


From rickzolun1 at charter.net  Wed Sep 27 00:29:14 2006
From: rickzolun1 at charter.net (rick)
Date: Wed, 27 Sep 2006 00:29:14 -0400
Subject: optparse
Message-ID: <C6nSg.79$M31.50@newsfe05.lga>

Consider the following piece of code:

parser = optparse.OptionParser(usage="usage: %prog <input filename> 
<output filename> [options]", add_help_option=False)
parser.add_option("-d", type="string", action="store", dest="DELIM", 
default="|", help="single character delimiter in quotes (default: |)")
(options, args) = parser.parse_args()


Is there any way I can add help for the arguments (<input filename> and 
<output filename>) in the same table that optparse generates above the 
options section. Ideally, I would like the output as:

======================================================
usage: DelimTOFixedWidth.py <input filename> <output filename> [options]

required:
  input filename     name of the delimited input file
  output filename   name of fixed-width output file

options:
  -d DELIM  single character delimiter in quotes (default: |)
======================================================

Is that possible using optparse?

Thanks.


From sjmachin at lexicon.net  Mon Sep 25 05:00:38 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 02:00:38 -0700
Subject: Unexpected behaviour of csv module
In-Reply-To: <ef8208$q37$1$8300dec7@news.demon.co.uk>
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
	<1159148247.308716.234600@i42g2000cwa.googlegroups.com>
	<ef8208$q37$1$8300dec7@news.demon.co.uk>
Message-ID: <1159174838.874515.222640@i42g2000cwa.googlegroups.com>


Andrew McLean wrote:
> John Machin wrote:
> > A better workaround IMHO is to strip each *field* after it is received
> > from the csv reader. In fact, it is very rare that leading or trailing
> > space in CSV fields is of any significance at all. Multiple spaces
> > ditto. Just do this all the time:
> >
> > row = [' '.join(x.split()) for x in row]
>
> The problem with removing the spaces after they are received from the
> csv reader is if you want to use DictReader. I like to use DictReader,
> without passing it the field list. The module then reads the field list
> from the first line, and in this situation you don't get an opportunity
> to strip the spaces from that.

You can fix that. The beauty of open source is that you can grab it
(Windows: c:\python2?\lib\csv.py (typically)) and hack it about till it
suits your needs. Go fer it!

Cheers,
John



From gregpinero at gmail.com  Tue Sep  5 18:56:31 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Tue, 5 Sep 2006 18:56:31 -0400
Subject: Removing from a List in Place
In-Reply-To: <9afea2ac0609051409q6a083503sc2003669d0885c3f@mail.gmail.com>
References: <B51587638.196.5201.1@mx-extra>
	<9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>
	<9afea2ac0609051409q6a083503sc2003669d0885c3f@mail.gmail.com>
Message-ID: <312cfe2b0609051556x3b7e0910we370f7b4c21f73ec@mail.gmail.com>

On 9/5/06, Tim Williams <tim at tdw.net> wrote:
> > It does already,  you just haven't grasped list fully yet :):)
> >
> > when you remove 2 from alist,  the list becomes length 2, there is no
> > longer a 3rd item in the list to iterate over.
> >
> > Try this
> >
> > > >>> alist=[1 ,2 ,3, 4]
> > > >>> for item in alist:
> > > ....    print item
> > > ....    if item==2:
> > > ....            alist.remove(item)
> > > ....    print alist
> >
>
> sorry,  I meant to offer an alternative also
>
> in yourgiven case you can iterate over a copy of the list like this:
>
> >>> for item in alist[:] :
>

Thanks Tim.  I suppose that does make sense.  Iterating over a copy is
a good alternative.

-Greg


From ldo at geek-central.gen.new_zealand  Mon Sep 25 06:55:41 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 22:55:41 +1200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<n7YQg.3965$IA.3432@newssvr11.news.prodigy.com>
	<1159061998.460873.321180@m73g2000cwd.googlegroups.com>
Message-ID: <ef8chj$fui$4@lust.ihug.co.nz>

In message <1159061998.460873.321180 at m73g2000cwd.googlegroups.com>, T wrote:

>Umm...I was hoping for something simpler and more straight forward.

It cannot be done simply or straightforwardly. Or reliably, for that matter.


From hardcoded.software at gmail.com  Tue Sep 26 16:19:10 2006
From: hardcoded.software at gmail.com (Virgil Dupras)
Date: 26 Sep 2006 13:19:10 -0700
Subject: Splitting device addresses into parts
In-Reply-To: <efbl8h$kf2$03$1@news.t-online.com>
References: <efbl8h$kf2$03$1@news.t-online.com>
Message-ID: <1159301950.312424.8030@i3g2000cwc.googlegroups.com>

Fabian Steiner wrote:
> I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
> need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
> simple way to achieve this? So far I am using regular expressions but I
> would like to avoid them ...
>
> Regards,
> Fabian Steiner

I would personally go for regex, but what about a quick and dirty:

s.replace('.',':').split(':')[1:]



From sjmachin at lexicon.net  Mon Sep 11 09:57:10 2006
From: sjmachin at lexicon.net (John Machin)
Date: 11 Sep 2006 06:57:10 -0700
Subject: extracting substrings from a file
References: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>
Message-ID: <1157983030.172040.270940@p79g2000cwp.googlegroups.com>

sofiafig at gmail.com wrote:
> Hi,
>
> I have a file with several entries in the form:
>
> AFFX-BioB-5_at	 E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
> corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
> 7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
> 7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
> dethiobiotin synthetase (bioD), complete cds.
>
> 1415785_a_at	 /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
> /CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
> /DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
> /PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1
>
> and I would like to create a file that has only the following:
>
> AFFX-BioB-5_at  /GEN=bioB  /gb:J04423.1
>
> 1415785_a_at	 /gb:NM_009840.1 /GEN=Cct8
>
> Could anyone please tell me how can I do it?
>
> Many thanks in advance
> Sofia

Here's my first iteration:
C:\junk>type sofia.py
prefixes = ['/GEN=', '/gb:']

def extract(fname):
    f = open(fname, 'r')
    chunks = [[]]
    for line in f:
        words = line.split()
        if words:
            chunks[-1].extend(words)
        else:
            chunks.append([])
    for chunk in chunks:
        if not chunk:
            continue
        output = [chunk[0]]
        for word in chunk:
            for prefix in prefixes:
                if word.startswith(prefix):
                    output.append(word)
                    break
        print ' '.join(output)

if __name__ == "__main__":
    import sys
    extract(sys.argv[1])

C:\junk>sofia.py sofia.txt
AFFX-BioB-5_at /GEN=bioB /gb:J04423.1 /gb:J04423.1
1415785_a_at /gb:NM_009840.1 /GEN=Cct8 /gb:BC009007.1

Before I fix the duplicate in the first line, you need to say whether
you really want the
/gb:BC009007.1 in the second line thrown away -- IOW, what's the rule?
For each prefix, either (1) get the first "word" that starts with that
prefix or (2) get all unique such words. You choose.

Cheers,
John



From blue99 at interia.pl  Fri Sep  8 05:22:44 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 8 Sep 2006 02:22:44 -0700
Subject: Javadoc style python manual?
In-Reply-To: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
Message-ID: <1157707364.037779.126350@m79g2000cwm.googlegroups.com>


xiong.xu.cn at gmail.com wrote:
> Hi there,
>
> I'm new to python and I'm from the java world.
> Though I love to learn python, I'm not very comfortable with the python
> documentation.
> Because when i read jdk doc, i can see the class hierachy, class
> member, class methods etc in html docs. It's very easy for me to
> understand the Java language.
> But in python, i find it kind of inconvient.
>
> Any advice?

With AcitvePython is distributed the htmlhelp version of python
reference
(ActivePython24.chm). It's really convinient to use.

HTH,
Rob



From JohnRoth1 at jhrothjr.com  Mon Sep 11 12:08:51 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 11 Sep 2006 09:08:51 -0700
Subject: PyPy with a smaller PVM for the full Python?
In-Reply-To: <t5o9g2t5n39inanhl43d1pbnphvpsvfg7a@4ax.com>
References: <t5o9g2t5n39inanhl43d1pbnphvpsvfg7a@4ax.com>
Message-ID: <1157990931.797177.243980@q16g2000cwq.googlegroups.com>


Casey Hawthorne wrote:
> Currently PyPy is working toward compiling to C a restricted subset of
> Python, called RPython.
>
> Would it be possible for PyPy to "compile" the full subset of Python
> by also using a lot smaller version of the PVM (Python Virtual
> Machine) to go with the "compiled" code?
> So, the user would be running the C object code and also a smaller
> PVM!
>
> Or would this completely remove or severely reduce any speed advantage
> of the compiled code?
>
>
> Similarly, for JPython (which is at Python 2.2?), could one also use a
> lot smaller accompanying PVM with the JPython source code and JVM to
> use Python 2.5 in its entirety?
>
> --
> Regards,
> Casey

The PyPy project, as I understand it, is to have a version
of Python that's entirely written in Python. The RPython
modules are the ones that will be compiled into C so that
they can then be compiled into a virtual machine. I doubt
very much if there's anything that can be done to subset
it further. Their direction on performance is toward a JIT
(Just In Time compiler), not to put lots of code in C so
that it runs fast.

The same goes for both Java and the CLR (IronPython).
I believe there are plans to subset the JVM in the
2.7 release, but I have my doubts whether that will reduce
the JVM footprint as far as running Jython is concerned.
The intention is to reduce the initial footprint for runing the
JVM under a browser.

John Roth



From carsten at uniqsys.com  Tue Sep 26 10:01:04 2006
From: carsten at uniqsys.com (Carsten Haese)
Date: Tue, 26 Sep 2006 10:01:04 -0400
Subject: QuoteSQL
In-Reply-To: <efb1me$a43$1@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
Message-ID: <1159279263.25441.28.camel@dot.uniqsys.com>

On Tue, 2006-09-26 at 07:08, Lawrence D'Oliveiro wrote:
> So yes, there should be two separate functions, one for escaping
> non-wildcard specials, and one for escaping wildcards.
> 
> > You only need the first one, since every database interface that
> > follows PEP 249.
> 
> You still need the second one, in instances like the QuoteSQLList example I
> gave earlier.

"Need" is a strong word unless something like the following doesn't work
for some reason:

cur.execute("select * from people where last_name in (%s,%s,%s)",
(name1, name2, name3) )

-Carsten




From pavlovevidence at gmail.com  Mon Sep 11 11:47:36 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 11 Sep 2006 08:47:36 -0700
Subject: Algorithm Question
In-Reply-To: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
Message-ID: <1157989656.266078.205560@d34g2000cwd.googlegroups.com>

Andrew McLean wrote:
> I have a list of strings, A. I want to find a set of strings B such that
> for any "a in A" there exists "b in B" such that b is a sub-string of a.

B=A?

> But I also want to minimise T = sum_j t_j where
> t_j = count of the number of elements in A which have b[j] as a sub-string

If there not elements in A that are substrings of any other element in
A, and if B=A, then t_j would be 1 for all j.  Which means B=A would be
optimal (since elements of B have to be substring of at least one
element in A).  It looks like the B={set of all elements in A that are
not a substring of any other element in A} is the generally optimal
solution.

I suspect you mistyped or omitted something--problem is underspecified
at best.


Carl Banks



From hpsekhon at googlemail.com  Mon Sep 11 11:39:05 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Mon, 11 Sep 2006 16:39:05 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <ee3urn$ane$1@sea.gmane.org>
References: <45057B5E.7010306@googlemail.com> <ee3urn$ane$1@sea.gmane.org>
Message-ID: <45058319.2070400@googlemail.com>

Steve Holden wrote:
> Hari Sekhon wrote:
>   
>> I am writing a wrapper to a binary command to run it and then do 
>> something with the xml output from it.
>>
>> What is the best way of making sure that the command is installed on the 
>> system before I try to execute it, like the python equivalent of the 
>> unix command "which"?
>>
>> Otherwise I'd have to do something like:
>>
>> if os.system('which somecommand') != 0:
>>     print "you don't have %s installed" % somecommand
>>     sys.exit(1)
>>
>> I know that isn't portable which is why a python solution would be 
>> better (although this will run on unix anyway, but it'd be nice if it 
>> ran on windows too).
>>
>>     
> The easiest way to test whether the command will run is to try and run 
> it. If the program doesn't exist then you'll get an exception, which you 
> can catch. Otherwise you'll be stuck with non-portable mechanisms for 
> each platform anyway ...
>
> regards
>   Steve
>   

Yeah, this occurred to me just after I sent the mail, but I don't really 
want to run the program because it will go off and do some work and take 
time to come back. If there is a better way then that would be great. I 
can't think of anything other than what you have suggested with a 
message saying that the program wasn't found in the path which would be 
the most appropriate error since the path could also be wrong.

Perhaps I'll just bite the bullet and get the program to do something as 
small as possible to test it.

I guess I'll just have to continue to miss my unix commands...

-h

-- 
Hari Sekhon

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From rtw at freenet.co.uk  Sat Sep 23 09:29:34 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Sat, 23 Sep 2006 08:29:34 -0500
Subject: distutils on Windows with VC++ 8
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
	<45136400.5030600@v.loewis.de>
	<Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>
	<4514479B.5070808@v.loewis.de>
	<Xns9846DDC7A18E0rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <Xns9847937984E7CrtwfreenetREMOVEcouk@216.196.109.145>

Rob Williscroft wrote in news:Xns9846DDC7A18E0rtwfreenetREMOVEcouk@
216.196.109.145 in comp.lang.python:

>> That's yet another option. Somebody reported that the compiler in the
>> .NET SDK won't support generating optimized code, though. That's a
>> problem for some people.
> 
> I belive that was true "Academic" releases of Visual Studio, AIUI it 
> was never true of the 7.1 compiler that came with .NET 1.1 SDK's.
> 

... a 106 MB download later ... 

Strike that. My belief was incorrect, the SDK comes with the "Standard"
compiler that doesn't understand the /O... options that the "Optimizing"
compiler that comes with Visual Studio does.

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From linuxnooby at yahoo.com.au  Mon Sep  4 21:33:55 2006
From: linuxnooby at yahoo.com.au (linuxnooby at yahoo.com.au)
Date: 4 Sep 2006 18:33:55 -0700
Subject: newbie pipe question
Message-ID: <1157420035.525794.71510@74g2000cwt.googlegroups.com>

Hi

I want to write a python script that accepts input ( a single line of
text) from another program (squid proxy) and sends back output ( a
single line of text). I am not sure how to go about this

cheers David



From 71david at libero.it  Fri Sep  8 04:01:28 2006
From: 71david at libero.it (David)
Date: Fri, 8 Sep 2006 10:01:28 +0200
Subject: wxPython: StaticText Event
References: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>
	<mailman.145.1157676533.5279.python-list@python.org>
Message-ID: <spfszyvsgif8$.fcfpozdrx8f9.dlg@40tude.net>

Il Fri, 08 Sep 2006 10:24:52 +1000, John McMonagle ha scritto:

> If you want to create static text that responds to mouse events, try
> using the wx.lib.stattext.GenStaticText class.  
> 
> Add the following import:
> 
> import wx.lib.stattext
> 
> Then,
> 
> self.st = wx.lib.stattext.GenStaticText(self.pnl, -1, 'Static Text
> Control', pos=(30,20))

Thankyou very much!

Best regards,

David


From mattheww at chiark.greenend.org.uk  Thu Sep  7 15:25:23 2006
From: mattheww at chiark.greenend.org.uk (Matthew Woodcraft)
Date: 07 Sep 2006 20:25:23 +0100 (BST)
Subject: python extension modules within packages not loading
References: <1157589953.046451.75510@i3g2000cwc.googlegroups.com>
Message-ID: <-Rw*iYbqr@news.chiark.greenend.org.uk>

tyler <tyler.retzlaff at gmail.com> wrote:
> I've written a small python extension but I'm having difficulty loading
> it at runtime.  The source for my extension is a module which is a
> member of a package is organized as follows.
>
> test/setup.py
> test/myutils/__init__.py
> test/myutils/netmodule.c

[...]

> Noticing it appears to be using a relative path I decided to try again
> and this time I chdir() to /usr/lib/python2.4/site-extensions directory
> before launching the interpreter and it then it works perfectly fine.
> Of course I shouldn't have to set my cwd to the site-extensions
> directory before using my extension module..

It looks to me like the problem is that you have a 'myutils'
subdirectory inside the directory that you're starting the interpreter
in. Are you running it from the 'test' directory?

When you use the interactive interpreter, Python's default search path
for modules and packages includes the current directory as the first
entry, so it's finding 'myutils' there rather than in
/usr/lib/python2.4/site-packages.

If that's right, then to avoid this problem you can either run Python
from any other directory, or put a copy of your 'net.so' in the local
'myutils' too.

-M-



From http  Fri Sep  8 21:09:29 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 18:09:29 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<Xns9839C4FD80E2rtwfreenetREMOVEcouk@216.196.109.145>
	<1157761731.042621.77150@p79g2000cwp.googlegroups.com>
	<1157763615.547996.106780@h48g2000cwc.googlegroups.com>
Message-ID: <7xejul6e2e.fsf@ruckus.brouhaha.com>

"MonkeeSage" <MonkeeSage at gmail.com> writes:
> Ps. I don't know if xrange is faster...I thought the difference was
> that range created a temporary variable holding a range object and
> xrange created an iterator?

There's no such thing as a "range object"; range creates a list, which
consumes O(n) memory where n is the number of elements.  xrange
creates an xrange object, which is a reusable iterator of sorts.


From saikrishbe at gmail.com  Mon Sep 11 08:40:21 2006
From: saikrishbe at gmail.com (Sai Krishna M)
Date: Mon, 11 Sep 2006 18:10:21 +0530
Subject: inserting into a file
Message-ID: <6559fb300609110540leba6c1s4db35234da2f437c@mail.gmail.com>

I want to insert a string in a file after a particular line.

I thought of using seek() function but on opening the file in append
mode the seek value is undone.
One crude idea i had was to read the file in a list and insert the
string correspondingly.

Is there any other way to do this?
Please help...

Sai krishna M
-- 
I love Freedom


From steve at holdenweb.com  Mon Sep 25 10:26:23 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 10:26:23 -0400
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <4517e385$0$10996$636a55ce@news.free.fr>
References: <ef5hsc$8ig$1@news01.versatel.de>
	<4nn3ceFb3d5fU1@individual.net>	<ef5nop$aoh$1@news01.versatel.de>	<pan.2006.09.24.11.04.35.54758@gmx.net>	<ef5pqm$bc8$1@news01.versatel.de>	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
Message-ID: <ef8osu$43b$1@sea.gmane.org>

Christophe wrote:
> Steven D'Aprano a ?crit :
> 
>>By memory, in an thread about the same topic just a few days ago, Fredrik
>>Lundh posted a link to Perl's FAQs that suggests a method for "validating"
>>email addresses: treat it like a password and ask the user to type it
>>twice. That will protect against simple typos and input errors.
> 
> 
> I hate that thing. When I see that, I type my email once and copy/paste 
> into the second edit box. This is useless AND annoying at the same time.

Probably safe to say it's a little less useful when the text field 
contents are visible, but the classic validator for hidden fields.

It might surprise you to realise that not everyone in the world is a 
touch typist, and for them (since they are often looking at the keyboard 
rather than the screen) it's not an unreasonable validator.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From nick at craig-wood.com  Tue Sep 12 04:30:03 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Tue, 12 Sep 2006 03:30:03 -0500
Subject: best way of testing a program exists before using it?
References: <mailman.264.1157990063.5279.python-list@python.org>
Message-ID: <slrnegcq9m.158.nick@irishsea.home.craig-wood.com>

Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
>          if os.path.isfile (filepath):
>            print filepath

You might get a more accurate result using

  os.access(filepath, os.X_OK)

instead of

  os.path.isfile(filepath)

Which checks the file is executable

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From anthra.norell at vtxmail.ch  Wed Sep 13 10:45:35 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Wed, 13 Sep 2006 16:45:35 +0200
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158132916.302348.189580@h48g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>	<mailman.372.1158079916.5279.python-list@python.org>
	<1158132916.302348.189580@h48g2000cwc.googlegroups.com>
Message-ID: <4508198F.8060700@vtxmail.ch>

gatti at dsdata.it wrote:
> Frederic Rentsch wrote:
>
>
>   
>>    If you need regexes, why not just reverse-sort your expressions? This
>> seems a lot easier and faster than writing another regex compiler.
>> Reverse-sorting places the longer ones ahead of the shorter ones.
>>     
>
> Unfortunately, not all regular expressions have a fixed match length.
> Which is the longest of, for example, /(abc)?def/ and /(def)?ghi/
> depends on the input. 
>
> Lorenzo Gatti
>
>   
Oh yes, and my proposal to reverse-sort the targets was in response to 
the OP who wanted to generate a regex from a bunch of strings. It should 
work for that.


Frederic



From robin at reportlab.com  Wed Sep 13 06:58:01 2006
From: robin at reportlab.com (Robin Becker)
Date: Wed, 13 Sep 2006 11:58:01 +0100
Subject: Help me use my Dual Core CPU!
In-Reply-To: <7xbqpk5bnc.fsf@ruckus.brouhaha.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>	<7x8xkol0n9.fsf@ruckus.brouhaha.com>	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>	<mailman.14.1158140507.10491.python-list@python.org>
	<7xbqpk5bnc.fsf@ruckus.brouhaha.com>
Message-ID: <4507E439.7000307@chamonix.reportlab.co.uk>

Paul Rubin wrote:
> Robin Becker <robin at reportlab.com> writes:
>> Nobody seems to have mentioned POSH http://poshmodule.sourceforge.net
>> which used almost to work. I assume it's busted for later pythons and
>> the author says it's just a demonstration.
> 
> Yeah, it's been mentioned.
> 
>> Anandtech demoed an 8 core mac pro machine and were unable to "max out
>> the cpus".
> 
> You mean with POSH??!  And I see a 4 core machine on Apple's site but
> not an 8 core.  
> 

No I think they tried to just run a lot of processes at once and they got the 8 
core by just substituting the two dual cores with two quads.

>> Python needs some kind of multi cpu magic pretty quickly or we'll
>> all end up using erlang :)
> 
> Heh, yeah ;).  
> 
>> As for subprocess I don't see it as much use unless we can at least
>> determine the number of cpu's and also set the cpu affinity easy with
>> occam maybe not in python.
> 
> I haven't looked at Occam.  I've been sort of interested in Alice

I used occam back in the eighties with ibm pcs and these 4 transputer plugin 
cards. One of my bosses was Scottish MP and heavily into macro economic 
modelling (also an inmos supporter). I seem to remember doing chaotic 
gauss-seidel with parallel equation block solving, completely pointless as the 
politicos just ignored any apparent results. Back of the envelope is good enough 
for war and peace it seems.

Is suppose Alice isn't related to the "Alice Machine" which was a tagged pool 
processor of some kind. I recall it being delivered just when prolog and the 
like were going out of fashion and it never got faster than a z80 on a hot day.

> (concurrent ML dialect), though apparently the current version is
> interpreted.  Erlang is of less somewhat interest to me because it's
> dynamically typed like Python.  Not that dynamic typing is bad, but
> I'm already familiar with Python (and previously Lisp) so I'd like to
> try out one of the type-inferenced languages in order to get a feel
> for the difference.  I'd also like to start using something with a
> serious optimizing compiler (MLton, Ocaml) but right now none of these
> support concurrency.
> 
> I guess I should check into GHC:
> 
>   http://www.haskell.org/haskellwiki/GHC/Concurrency


-- 
Robin Becker



From seberino at spawar.navy.mil  Thu Sep 21 13:40:52 2006
From: seberino at spawar.navy.mil (seberino at spawar.navy.mil)
Date: 21 Sep 2006 10:40:52 -0700
Subject: Does WSGI offer anything for web *beginner*?
Message-ID: <1158860452.248979.227630@i3g2000cwc.googlegroups.com>

I love idea of WSGI and hope it succeeds.  It seems to be helpful for
person
tempted to write his own framework.....they can now just mix and match
existing
components with WSGI //instead//.

I not sure what WSGI offers the web beginner.  Aren't they still better
off
learning an existing web framework first before attacking WSGI?

I suppose ideally everyone would just learn WSGI and then never have
to learn details of any //specific// framework.  But that would require
impeccable maturity and documentation on WSGI and we are not
there yet right?

Please advise.

Chris



From MonkeeSage at gmail.com  Sat Sep 23 15:12:11 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 12:12:11 -0700
Subject: Need compile python code
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
Message-ID: <1159038731.703945.18300@d34g2000cwd.googlegroups.com>

mistral wrote:
> this not work for me, show compilation error.  Is there simple way
> compile pythone file? its absolutely unclear with command line. Just
> show me exact command I need run(from python interactive shell?)

OK...

# cd to where the file.py is
$ cd /some/dir

# start python interactively, enable optimized compiling
$ python -O
...

# import your file.py -- if this doesn't work then
# your file has errors and will not compile --
# if it works then your file is now compiled --
# file.pyo should now exist with file.py
>>> import file

# you can also do it explicitly --
# import the compiler
>>> import py_compile
>>> py_compiler.compile('file.py')

If that still doesn't work, show us the error, or we can't help you
very easily.

Regards,
Jordan



From coldsoul4e at googlemail.com  Thu Sep 28 17:18:14 2006
From: coldsoul4e at googlemail.com (coldsoul4e at googlemail.com)
Date: 28 Sep 2006 14:18:14 -0700
Subject: running commands with sudo & python
Message-ID: <1159478294.302376.119620@h48g2000cwc.googlegroups.com>

Hi!
I must execute a command with os.command(), but with root permissions.
Is there anyway to do that with python? 
Thanks



From steve at holdenweb.com  Tue Sep 26 14:53:50 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 14:53:50 -0400
Subject: Splitting device addresses into parts
In-Reply-To: <efbn5h$ol2$03$1@news.t-online.com>
References: <efbl8h$kf2$03$1@news.t-online.com>	<45195a2d$0$27565$626a54ce@news.free.fr>
	<efbn5h$ol2$03$1@news.t-online.com>
Message-ID: <efbsub$pfg$2@sea.gmane.org>

Fabian Steiner wrote:
> Bruno Desthuilliers wrote:
> 
>>Fabian Steiner wrote:
>>
>>>I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
>>>need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
>>>simple way to achieve this? So far I am using regular expressions but I
>>>would like to avoid them ...
>>
>>devices = ["PCI:2:3.0", "PCI:3.4:0"]
>>for d in device:
>>  nums = tuple(map(int, d.split(':')[1:]))
>>  print "for ", d, " : ", nums
> 
> 
> Unfortunately, this doesn't work (even if I correct your typos) since
> the delimeter isn't necessary a colon - that's exactly the difficulty I
> am trying to solve.
> 
In which case you'd better redefine """like "PCI:2:3.0" or 
"PCI:3.4:0"""" so we can understand the real problem :-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From duncan.booth at invalid.invalid  Sun Sep 24 08:58:31 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 24 Sep 2006 12:58:31 GMT
Subject: Question about decorators (with context?)
References: <mailman.528.1159101315.10491.python-list@python.org>
Message-ID: <Xns98488E299C15Cduncanbooth@127.0.0.1>

"Oliver Andrich" <oliver.andrich at gmail.com> wrote:

> I will have to wrap a lot of methods to get all the functionality I
> need. And the checking for an exception looks always the same. So I
> want to write short methods, which are decorated by my_funky_decorator
> which handles the error checking and exception handling. Sadly, this
> decorator needs access to self._wand from the current object.
> 
> So far I can only think of a solution, where I have to do something
> like that. 
> 
> @my_funky_decorator(wand=<some way to access the _wand>)
> def read_image(self, filename):
>     pass
> 
> So, I like to ask, if someone could enlighten me how to implement the
> easy decorator I mentioned in my first "example".

Just make sure your wrapper takes self as its first argument:

def my_funky_decorator(f):
   @functools.wraps(f) # Omit this if Python <2.5
   def wrapper(self, *args, **kw):
       try:
           print "wand is", self._wand
           return f(self, *args, **kw)
       except whatever:
           self.handleException()
   return wrapper

class MagickWand(object):

    def __init__(self):
        self._wand = <create a MagickWand instance using ctypes>

    @my_funky_decorator
    def read_image(self, filename):
        return <ctypes call of the MagickWand C function to read an image>


From sschwarzer at sschwarzer.net  Thu Sep  7 14:14:43 2006
From: sschwarzer at sschwarzer.net (Stefan Schwarzer)
Date: Thu, 07 Sep 2006 20:14:43 +0200
Subject: Data sticking around too long
In-Reply-To: <1157580454.190529.38470@d34g2000cwd.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
	<1157574434.643964.218110@m73g2000cwd.googlegroups.com>
	<1157575592.588966.17100@m73g2000cwd.googlegroups.com>
	<1157576271.093483.74600@i42g2000cwa.googlegroups.com>
	<1157580454.190529.38470@d34g2000cwd.googlegroups.com>
Message-ID: <45006193.7000003@sschwarzer.net>

Hello Matimus,

On 2006-09-07 00:07, Matimus wrote:
> Someone correct me if I'm wrong (sometimes I get the terms mixed up)
> but I believe that what you are seeing is due to 'number' being an
> immutable type. This means that its value cannot be changed and thus
> each assignment is effectively creating a new instance if int.

The significant difference is not between mutable and immutable
objects, but between modifying an object in-place
(e. g. some_list.append(1)) and assigning an object to a name
(e. g. some_int = 1). If you do an assignment to a class
"variable", the binding to the previous object (if any) will be
removed and a new binding to the assigned object created.

The assignments Rob does with

c1.number = 1
c2.number = 2

create a new name "number" in each of the instances' namespaces
and assign the objects 1 and 2 to them, respectively. In contrast,
the list scanList is modified in-place with

c1.scanList.append("One")
c2.scanList.append("Two")

so no names are created in the instances' namespaces and both
operations modify the object in the class's namespace.

> I believe lists are considered immutable also

I guess you confuse this with tuples.

> but since it is a container
> type it behaves somewhat differently.

Again, this has nothing per se to do with being a container
though many containers are mutable objects and often are
modified in-place.

Stefan


From wildemar at freakmail.de  Thu Sep 21 00:59:05 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 06:59:05 +0200
Subject: naming objects from string
In-Reply-To: <1158813236.493366.122600@k70g2000cwa.googlegroups.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>
	<1158813236.493366.122600@k70g2000cwa.googlegroups.com>
Message-ID: <45121C19.6050908@freakmail.de>

manstey wrote:
> Hi,
> 
> But this doesn't work if I do:
> 
> a=object()
> x='bob'
>  locals()[x] = a
> 
> How can I do this?

You can. I just copy/pasted your code and it works fine here. (You are 
aware that there is whitespace before locals() that you have to remove 
before you feed it to the snake?)

What error did you get?

Let me again stress that using locals and globals is a bit contrived, 
whereas the dictionary approach from my other post is not.


Just out of curiosity: Why do you want to do this anyway?

wildemar


From tenax.raccoon at gmail.com  Sun Sep  3 16:41:17 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 3 Sep 2006 13:41:17 -0700
Subject: data structure
In-Reply-To: <1157311357.540771.238970@h48g2000cwc.googlegroups.com>
References: <1157311357.540771.238970@h48g2000cwc.googlegroups.com>
Message-ID: <1157316077.879009.98160@e3g2000cwe.googlegroups.com>

noro wrote:
> Hello again.
>
> I have a task i need to do and i can't seem to find an elegent
> solution.
> i need to make a tree like data structure (not necessry a binary tree).
>
>
> i would like each node to access his sons in a dicionary kind of why,
> for example: if  ROOT node has the name 'A' and 'AA', 'AB' are his
> sons, and 'ABA' is 'AB son etc' (in this name scheme the letters from
> left to right shows the route from the root to the node) then
> ROOT['AB'] will point to 'AB' node and ROOT['AB'][ABA'] will point to
> 'ABA' node.
>
> the tree does not have to be symmarical and every node link to
> different number of nodes. two nodes can have the same name if they are
> in a different location in the tree. so ROOT['factory1]['manager'] and
> ROOT['factory2']['manager'] can be in the same tree and point to
> different objects.
>
> all up to now i can manage.
> ---------------------
> my problem is this: i would like to find a way to easly construct the
> tree by giving some simple template, somthing similer to:
> "
> ROOT={'factory1':FACTORY,'facory2':FACTORY,'linux':OS,'windows':OS}
> FACTORY={'manager':EMPLOEY,'worker':EMPLOEY,'office':BUILDING,'......}
> OS={'ver':VERSION,'problems':LIST,....}
> "
> i started bulding the class NODE as an extention of  "dict" with the
> keys are the childern names and the items are the next node reference.
> the proablem was that as you can see from the above example 'factory1'
> and 'factory2' point to the same object. i would like to have 2
> different objects of FACTORY. making FACTORY a template and not an
> object.
>
> i'll appreciate any comment
> amit

You can make a shallow copy of a dictionary using the dictionary's copy
method.  To make a completely new copy, use the deepcopy function in
the copy module.  Please see the copy module's documentation on the
limits and differences between deep copies and shallow copies.
(http://docs.python.org/lib/module-copy.html)

     --Jason



From mikeowens at gmail.com  Tue Sep 12 10:24:08 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 09:24:08 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158035728.028640.75440@h48g2000cwc.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
Message-ID: <df2316bd0609120724j41b3e3bfjfae1266e219c1587@mail.gmail.com>

On 11 Sep 2006 21:35:28 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
> Mike Owens wrote:
> > On 11 Sep 2006 18:23:50 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
> >
> > > Can you run your car on diesel fuel?
> > >
> > > Why not?
> > >
> > > Because your car's specification says to use gasoline?
> > >
> > > If your car has been designed to run on diesel, you shouldn't
> > > be saying it has gasoline engine. Duh.
> >
> > No but you can still call it a car with an engine, just as SQLite is a
> > SQL database, with an SQL engine.
>
> Seperate the data from the engine and what have you got?
> Data with dynamic typing. Data that can't be migrated to
> a "real" SQL database because you'll get type mismatches
> when strings are inserted into numeric fields. The type affinity
> kluge won't help there, will it?

Did you even read my original post? Or did you just completely miss the point?

> It's not the job of the System Test Engineer to design things.
> It's his job to find fault with everything. I just happen to be very
> good at finding faults with things.

And apparently not very good at providing any constructive solutions.

> But no one appreciates my finding those faults.

No one appreciates the tone in which you report these alleged faults,
necessarily agrees with the faults that you find, nor elected you
system test engineer of the SQLite project.

> > It calls for other things that many databases don't implement or
> > altogether violate as well, so what? Show me how both MS SQL's T-SQL
> > and Oracle's PL/SQL procedure languages are so standards compliant
> > that you can use the same procedure code in both databases. You can't
> > -- precisely because they ignore or outright violate parts of the
> > standard as well. What's your position on that? Do some Googling and
> > you can easily find 18 ways that Oracle's PL/SQL deviates from the
> > standard. And T-SQL is plainly nowhere close.
>
> And how many of those systems use dynamic typing?

And how many conform to the standard?

> Name one where the documentation claims the SQL Language
> Specification is a bug.

Name one that conforms to the standard.

> And a lot of people go to chiropractors. And chiropractors are
> nice intelligent people with degrees. And the therapy provided
> does good.
>
> Nevertheless, the theory on which it's based is quackery.

To use your specious analogy, it represents another way of doing
things, which you admit yourself works. That's your justification for
calling Richard Hipp a crackpot?

> > It's clear. You're just way too smart for SQLite.
>
> Did you see my solution to Rick Shepard's problem in the
> thread "Parsing String, Dictionary Lookups, Writing to
> Database Table"?

The point being? -- you can write Python code and feel entitled to
condescending and rude?


From seppl43 at southstore.de  Thu Sep  7 04:46:40 2006
From: seppl43 at southstore.de (seppl43)
Date: 7 Sep 2006 01:46:40 -0700
Subject: de/-encoding problem?
Message-ID: <1157618800.560398.144550@m73g2000cwd.googlegroups.com>

Hello,

I'm writing a SOAP-client using SOAPpy for a JAVA-Application (JIRA).
When I try to send attachments, the incoming files are not decoded
correctly. They have about 1.5% more bytes.

What I'm doing is this:

file_obj = file(<path to file>,'rb')
cont = file_obj.read()
cont64 = base64.encodestring(cont)
chararray1 = array.array('c')
chararray1.fromstring(cont64)
file_obj.close()

# using the method of jira's SOAP-interface
add =
jira_soap.addAttachmentsToIssue(auth,issue_id,[<filename>],[chararray1])


This is the WSDL-description of that method:

<wsdl:message name="addAttachmentsToIssueRequest">
      <wsdl:part name="in0" type="xsd:string"/>
      <wsdl:part name="in1" type="xsd:string"/>
      <wsdl:part name="in2" type="impl:ArrayOf_xsd_string"/>
      <wsdl:part name="in3" type="impl:ArrayOf_xsd_base64Binary"/>
   </wsdl:message>

Does anybody know, why the files are not de-/encoded correctly?
Thanks for help.

Seppl



From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 11:04:35 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 17:04:35 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<mailman.692.1159282576.10491.python-list@python.org>
Message-ID: <slrnehigc3.pjn.sybrenUSE@schuimige.stuvel.eu>

Fredrik Lundh enlightened us with:
> and now we're waiting for the "['%s']*len(t)" vs. "'%s' for i in t"
> benchmarks (and the "consistency is more important than efficiency"
> and "creating extra objects is conceptually wrong" followups, and
> the "it depends on what you mean by" followups to the followups)

I didn't care anything about all that. I just found the way I wrote it
somewhat easier to read, that's all.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From holger.berger at googlemail.com  Fri Sep 22 09:32:19 2006
From: holger.berger at googlemail.com (hobel)
Date: 22 Sep 2006 06:32:19 -0700
Subject: bulding python containing static extension
Message-ID: <1158931939.598746.34850@e3g2000cwe.googlegroups.com>

Hi,

I want to build python on a plattform without dynamic linking
containing a third party extension, is this possible?

Bulding python itself is no problem, with the proper Modules/Setup
configuration.

But does anybody know how to integrate e.g. numpy as well?
Is it possible?
Any pointers/hints?

Thanks
   Holger



From duncan.booth at invalid.invalid  Wed Sep 20 04:23:27 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 20 Sep 2006 08:23:27 GMT
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158725248.962667.200920@k70g2000cwa.googlegroups.com>
Message-ID: <Xns98445F56C16DCduncanbooth@127.0.0.1>

anton.list at gmail.com wrote:

> beliavsky at aol.com wrote:
>> I think I read a suggestion somewhere to wrap the code where a Python
>> script starts in a main() function, so one has
> 
><snip>
> 
>> What are the advantages of doing this?
> 
> Others have stated all the good ones, so I'll state a slightly dumber
> one for us part time amateur hackers :)
> 
> If you start off writing all your python module inside a main function
> then as you chop your code up into other functions (refactoring), the
> code inside main is already at the proper indentation level for the new
> top level functions. No more indenting it one level further to  suit
> the functions indentation.
> 
That is also true if you start by putting all the main code inside an 'if 
__name__=="__main__":' block. Besides, how hard is it to select the code 
and hit tab or whatever the 'indent region' command is in your editor?

FWIW, my scripts generally evolve through several stages.

So looking at one I wrote recently I see that it started with a few lines 
at the outer level which quickly went inside a __name__=='__main__' block 
(so I could prod functions in the script interactively). Then as it grew 
larger the script moved into a main() function and some argument processing 
appeared in the __main__ block (and all the support functions disappeared 
into a separate module). Then I wanted some exception handling at the outer 
level so now I have the __main__ block containing outer level exception 
handling, and calling main() which does argument processing and calls 
script() which contains the original script.

It may evolve further: main() is a bit too large at the moment, and I think 
I want to move the original script into another module with a command line 
argument to select between scripts. My point being that I don't have a hard 
and fast rule: I do whatever seems to make the code read clearly at the 
time.


From davidh at ilm.com  Fri Sep  1 22:17:13 2006
From: davidh at ilm.com (David Hirschfield)
Date: Fri, 01 Sep 2006 19:17:13 -0700
Subject: simpleparse parsing problem
Message-ID: <44F8E9A9.2000504@ilm.com>

Anyone out there use simpleparse? If so, I have a problem that I can't 
seem to solve...I need to be able to parse this line:

"""Cen2 = Cen(OUT, "Cep", "ies", wh, 544, (wh/ht));"""

with this grammar:

grammar = r'''
declaration := ws, line, (ws, line)*, ws
line        := (statement / assignment), ';', ws
assignment  := identifier, ws, '=', ws, statement
statement   := identifier, '(', arglist?, ')', chars?
identifier  := ([a-zA-Z0-9_.:])+
arglist     := arg, (',', ws, arg)*
arg         := expr/ statement / identifier / num / str /
               curve / spline / union / conditional / definition
definition  := typedef?, ws, identifier, ws, '=', ws, arg
typedef     := ([a-zA-Z0-9_])+
expr        := termlist, ( operator, termlist )+
termlist    := ( '(', expr, ')' ) / term
term        := call / identifier / num
call        := identifier, '(', arglist?, ')'
union       := '{{', ws, (arg, ws, ';', ws)*, arg, ws, '}}'
operator    := ( '+' / '-' / '/' / '*' /
                 '==' / '>=' / '<=' / '>' / '<' )
conditional := termlist, ws, '?', ws, termlist, ws, ':', ws, termlist
curve       := (list / num), '@', num
spline      := (cv, ',')*, cv
cv          := identifier, '@', num
list        := '[', arg, (',', ws, arg)*, ']'
str         := '"', ([;] / chars)*, '"'
num         := ( scinot / float / int )
<chars>     := ('-' / '/' / '?' / [a-zA-Z0-9_.!@#$%^&\*\+=<> :])+
<int>       := ([-+]?, [0-9]+)
<float>     := ([-+]?, [0-9\.]+)
<scinot>    := (float, 'e', int)
<ws>        := [ \t\n]*
'''

But it fails. The problem is with how arglist/arg/expr are defined, 
which makes it unable to handle the parenthesized expression at the end 
of the line:

(wh/ht)

But everything I've tried to correct that problem fails. In the end, it 
needs to be able to parse that line with those parentheses around wh/ht, 
or without them.
Recursive parsing of expressions just seems hard to do in simpleparse, 
and is beyond my parsing knowledge.

Here's the code to get the parser going:

from simpleparse.parser import Parser
p = Parser(grammar, 'line')
import pprint
bad_line = """Cen2 = Cen(OUT, "Cep", "ies", wh, 544, (wh/ht));"""

pprint.pprint(p.parse(bad_line))


Any help greatly appreciated, thanks,
-Dave


-- 
Presenting:
mediocre nebula.



From fuzzyman at gmail.com  Sun Sep 17 15:39:33 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 17 Sep 2006 12:39:33 -0700
Subject: [ANN] Movable Python 2.0.0 Beta 1
Message-ID: <1158521973.233230.202080@i42g2000cwa.googlegroups.com>

There is a new version of `Movable Python
<http://www.voidspace.org.uk/python/movpy/>`_
available.

This is available for **Movable Python** for Python 2.2.3, 2.3.5, 2.4.3
and 2.5rc2 from :

    `The Movable Python Groups Page
<http://voidspace.tradebit.com/groups.php>`_



What is Movable Python
==================

Movable Python is a portable distribution of Python for windows,
designed to be run off a USB stick or computers that don't have Python
installed. It features an IDE (Pythonwin and IDLE are included - but
you can also use SPE), and a GUI launcher.

It can be configured to use multiple interpreters from a single
interface, including acting as a GUI for any executable.

It has a host of other features (like logging all output from files,
enabling psyco for all scripts, etc).

See the following link for a list of all the new features in Movable
Python 2.0.0 :


http://www.voidspace.org.uk/python/weblog/arch_d7_2006_07_15.shtml#e390

For an overview of the most important features (with screenshots) see :


http://www.voidspace.org.uk/python/weblog/arch_d7_2006_07_22.shtml#e396

Other uses for Movable Python include testing programs with different
versions of Python, and providing clean install 'sandboxes' for testing
programs. It is also an ideal launcher for IronPython.


What's New in 2.0.0 Beta 1
====================

'Console normal' didn't work for the Python 2.5 distribution (and
possibly
others, although it seemed to work with Movable Python for Python 2.4).
This is now fixed.

Added console handling for IronPython (if the interpreter is
'ipy.exe' or 'ipyw.exe' then the appropriate one will be
used when 'Console handling Normal' is selected.)

The IPOFF (IPython off) option wasn't acknowledged when launching
the interactive interpreter from the GUI.

A bug in py2exe 0.6.5 (an incompatibility with Python 2.5) would
cause the interactive interpreter to exit after an exception, and
possibly other problems. This is fixed.

Got rid of the error dialog in movpyw and the 'movpyw.exe.log' file.

Changed logging to 'Log Mode' in main menu.

Fixed configuration for IDE for Python 2.5 version.

Movable Python now exits with the same exit code as any script
it runs.

Improvements in traceback handling.

.. note::

    Pythonwin for Python 2.4 and 2.5, may need ``mfc71.dll``.

    You can download this from: `here (534k)
<http://www.voidspace.org.uk/mfc71.d11.zip>`_.

    This will automatically be included in future distributions.
{sm;:oops:}

It's still not too late to buy Movable python for Python 2.5 at the
reduced price, before the release of
Python 2.5 final.

There are still some issues with Pythonwin to be fixed, and the
documentation update, before
**Movable Python 2.0.0 Final** can be released.



From uriel.katz at gmail.com  Mon Sep 25 18:09:21 2006
From: uriel.katz at gmail.com (urielka)
Date: 25 Sep 2006 15:09:21 -0700
Subject: accepts decorator
Message-ID: <1159222161.439787.296650@d34g2000cwd.googlegroups.com>

i want to make a decorator that make a function accept only types,if
the types are wrong but the number of types is equal to arguments try
to convert them to the type.

for example:

@Accept(int,int)
def Sum(a,b):
    return a+b

print Sum("2",2.0)

this should print 4,coz the decorator sees that there is the same
amount of arguments in Accept and Sum,then it will try to cast them to
the types(a to int and also b to int),then he will send them to the
normal function so Sum will get a=2,b=2 instead of a="2"(string)
b=2.0(float).
i made this but it doesn`t work:
def Accept(*types):
        def check_accepts(f):
            assert len(types) == f.func_code.co_argcount-1,"Not
Enougth/Too much Types"
            Types=types
            def new_f(*args, **kwds):
                newArgs=[]
                for (a, t) in zip(kwds.values(), Types):
                    try:
                        newArgs.append(t(a))
                    except:
                        raise Exception("Convertion of %s to type %s
failed" %(a,t))
                nargs=tuple(newArgs)
                return f(*nargs, **kwds)
            new_f.func_name = f.func_name
            return new_f
        return check_accepts

it doesn`t work when i decorate a instance method.
i get in *args the instance and in **kwds the arguments,but if it is
just a function not a instance method i get in *args the arguments and
in **kwds a empty dict.

can someone also explain me what is  * and ** ,and how they are called.

Thanks,
    -Uriel Katz



From ldo at geek-central.gen.new_zealand  Wed Sep 27 05:36:26 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 21:36:26 +1200
Subject: re.compile().split(): why it produces empty string as a first
	element of the list
References: <KZCdnT686dFRlofYnZ2dnUVZ_oGdnZ2d@comcast.com>
	<mailman.771.1159335306.10491.python-list@python.org>
	<lLidnaMLFaJMkofYnZ2dnUVZ_qednZ2d@comcast.com>
Message-ID: <efdgkv$so1$2@lust.ihug.co.nz>

In message <lLidnaMLFaJMkofYnZ2dnUVZ_qednZ2d at comcast.com>, alf wrote:

> Fredrik Lundh wrote:
>> alf wrote:
>> 
>>> Let's run following:
>>>
>>>  >>> re.compile('(\[.*?\])').split('[aa]bb[11]22')
>>> ['', '[aa]', 'bb', '[11]', '22']
>>>
>>> Why does it return '' as a first element of the list?
>> 
>> 
>> because the string starts with a separator.
>> 
>> </F>
>> 
> so is it safe to say that the index of separator in the list is always
> an odd number?

Hard to see why not.


From gregpinero at gmail.com  Wed Sep 20 00:21:21 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Wed, 20 Sep 2006 00:21:21 -0400
Subject: How to get a Fix to an Abandoned Project?
In-Reply-To: <1hlxp3x.1dtd1eug5y80N%rhymes@myself.com>
References: <mailman.296.1158699367.10491.python-list@python.org>
	<1hlxp3x.1dtd1eug5y80N%rhymes@myself.com>
Message-ID: <312cfe2b0609192121w436e649ayf3ce10fec066367c@mail.gmail.com>

On 9/19/06, Lawrence Oluyede <rhymes at myself.com> wrote:
> Gregory Pi?ero <gregpinero at gmail.com> wrote:
> > Otherwise any other advice is welcome.  Should I just post
> > the code somewhere else, etc?
>
> Maybe you can fork and maintain it somewhere else...

Forking is an idea however I'd rather not become the "maintainer of
it", rather I just want to see it working it again.  Maybe I'll put it
on google code hosting.

-Greg


From sparks.m at gmail.com  Mon Sep 18 19:28:16 2006
From: sparks.m at gmail.com (Michael Sparks)
Date: 18 Sep 2006 16:28:16 -0700
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us> <450730C4.8020408@mvista.com>
	<mailman.405.1158107055.5279.python-list@python.org>
	<7x4pv753mq.fsf@ruckus.brouhaha.com>
Message-ID: <1158622096.384055.215610@e3g2000cwe.googlegroups.com>

Paul Rubin wrote:
> "Ramon Diaz-Uriarte" <rdiaz02 at gmail.com> writes:
> > You might also want to check
> > http://www.lindaspaces.com/products/NWS_overview.html
> > by the guys who "invented" Linda.
>
> Cool, I guess.
>
> > (The Oz language/Mozart system is a good example of a different and
> > very neat approach to concurrency; somewhat similar Python solutions
> > can be found at Kamaelia and Candygram. Links and other stuff at:
>
> I looked at these.  Oz/Mozart is a whole nother language, worth
> examining for its ideas, but the implementation is quite slow.
> Kamaelia doesn't attempt concurrency at all.  Its main idea is to use
> generators to simulate microthreads.

Regarding Kamaelia, that's not been the case for over a year now.

We've had threaded components as well as generator based ones since
around last July, however their API stablised properly about 4 months
back. If you use C extensions that release the GIL and are using an OS
that puts threads on different CPUs then you have genuine concurrency.
(those are albeit some big caveats, but not uncommon ones in python).

Also integrating things as a sub process is as simple instantiating a
component that talks to the subprocess over stdin/out to the
inbox/outbox model of Kamaelia and then just using it. Something
concrete this is useful for:
    mencoder_options = "-ovc lavc -oac mp3lame -ffourcc DX50 -lavcopts
acodec=mp3:vbitrate=200:abitrate=128 -vf scale=320:-2 -"
    ...#  assume 'encodingfile' is defined above
    Pipeline( DVB_TuneToChannel(channel="BBC ONE",fromDemuxer="MUX1"),
                  UnixProcess("mencoder -o "+encodingfile+"
"+mencoder_options)
            ).run()

On a dual CPU machine that code does indeed both use CPUs (as you'd
want and expect).

Also whilst we haven't had the chance to implement OS level process
based components, that doesn't mean to say we're not interested in
them, it's just that 2 people have to focus on something so we've been
focussed on building things using the system rather than fleshing out
the concurrently. To say we don't attempt implies that we don't want to
go down these routes of adding in genuine concurrency. (Which is really
why I'm replying - that's not the case - I do want to go down these
routes, and it's more man-hours than desire that are the issue).

Personally, I'm very much in the camp that says "shared data is
invariably a bad idea unless you really know what you're doing"
(largely because it's the most common source of bugs for people where
they're trying to do more than one thing at a time). People also
generally appear to find writing threadsafe code very hard. (not
everyone, just the people who aren't at the top end of the bell curve
for writing code that does more than one thing at a time)

This is why Kamaelia is message based (ie it's a concious choice in
favour), except for certain types of data (where we have a linda-esque
type system for more systemic information). The reason for this is to
help the average programmer from shooting himself in his own foot (with
a 6 CPU-barrelled shotgun :-).

In terms of how this is *implemented* however, we have zero copying of
data (except to/from threads at the moment) and so data is shared
directly, but in a location the user of the system thinks its natural
to have handoff to someone else. This approach we find tends to
encourage arbitration of access to shared resources, which IMO is a
good (defensive) approach to avoiding the problems people have with
shared resources.

But if it turns out our approach sucks for the average programmer, then
that's a bug, so we'd have to work to fix it. And if new approaches are
better, we'd welcome implementations since not all problems are screws
and not all tools are hammers :-) (as a result I'd also welcome people
saying what sucks and why, but preferably based on the system as it is
today, not as it was :)

Have fun :)


Michael.



From Aiwass333 at gmail.com  Wed Sep 13 13:22:15 2006
From: Aiwass333 at gmail.com (RunLevelZero)
Date: 13 Sep 2006 10:22:15 -0700
Subject: Windows bandwidth monitor
In-Reply-To: <ee981o$2n7$1@news.uit.no>
References: <1158160252.697595.123300@p79g2000cwp.googlegroups.com>
	<ee981o$2n7$1@news.uit.no>
Message-ID: <1158168135.491942.269480@h48g2000cwc.googlegroups.com>

Cool thanks



From slianoglou at gmail.com  Fri Sep 15 01:25:57 2006
From: slianoglou at gmail.com (Steve Lianoglou)
Date: 14 Sep 2006 22:25:57 -0700
Subject: Pre-defining an action to take when an expected error occurs
In-Reply-To: <1158293275.003995.202010@h48g2000cwc.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
Message-ID: <1158297956.946809.131300@k70g2000cwa.googlegroups.com>

> if the Excel sheet has 10 rows with data in them, the
> statement "range(sh.nrows)" should build the list of numbers [0,
> 1,...9]. It should, but it doesn't do that. What it does is buld a list
> from [0, 1...20] or more or a little less, but the point is that it
> always grabs empy rows after the last row containing data. Why is that?

Just a stab in the dark, but maybe there's some rogue whitespace in
some cell that's in a rowyou think is empty?

You could try to just select out a (small) region of your data, copy it
and paste it into a new spreadhseet to see if you're still getting the
problem.

-steve



From defcon8 at gmail.com  Sun Sep 10 11:14:28 2006
From: defcon8 at gmail.com (defcon8)
Date: 10 Sep 2006 08:14:28 -0700
Subject: Ghostscript interface
Message-ID: <1157901268.537694.132250@d34g2000cwd.googlegroups.com>

Does a ghostscript interface for python exist? I have searched google
quite a bit and all I have been able to find are command line hacks
from within python. Thanks in advance for any useful help.



From max at alcyone.com  Thu Sep 21 18:56:10 2006
From: max at alcyone.com (Erik Max Francis)
Date: Thu, 21 Sep 2006 15:56:10 -0700
Subject: Strange behaviour of 'is'
In-Reply-To: <slrneh5ttn.pik.spamspam@bowser.marioworld>
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
	<slrneh5ttn.pik.spamspam@bowser.marioworld>
Message-ID: <-b2dndDsTKMNhY7YnZ2dnUVZ_sSdnZ2d@speakeasy.net>

Ben C wrote:

> I'm as baffled as you, even more so its implication:

There is no implication whatsoever.  Whether immutable objects are 
recycled by the compiler or not is totally implementation dependent, and 
an irrelevant implementation detail.  Since they can't be mutated, 
whether their identity is shared with other objects in other contexts is 
never significant.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   Little things / Cut like knives / Hurt and sting
    -- Anggun


From sigzero at gmail.com  Sat Sep 16 15:28:11 2006
From: sigzero at gmail.com (Robert Hicks)
Date: 16 Sep 2006 12:28:11 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158428443.355245.310730@d34g2000cwd.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
Message-ID: <1158434891.490728.227970@m73g2000cwd.googlegroups.com>


nicolasfr at gmail.com wrote:
> Wildemar Wildenburger wrote:
> > nicolasfr at gmail.com wrote:
> > > I have read many messages of people complaining about the documentation,
> > > it's lack of examples and the use of complicated sentences that you
> > > need to read 10 times before understanding what it means.
> >  >
> > Where have you read that?
> >
> > wildemar
>
> I don't mean to start a flame war about this but here are some
> reference of people, who like me, don't like the current python doc:
> http://xahlee.org/UnixResource_dir/writ/python_doc.html
> http://mail.python.org/pipermail/python-list/2005-May/280634.html
>\

Please don't use Xah Lee as an example...please.

Robert



From george.sakkis at gmail.com  Fri Sep  8 23:00:47 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 8 Sep 2006 20:00:47 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
	<pan.2006.09.08.22.02.35.596359@gmx.net>
	<1157759163.349893.233340@m73g2000cwd.googlegroups.com>
Message-ID: <1157770847.555996.314100@m79g2000cwm.googlegroups.com>

mensanator at aol.com wrote:

> Sure, errors happen with static typing. After all, the values still
> have to match. Dynamic typing allows for more potential errors and,
> thanks to Murpy's Law, I will have a much bigger problem with data
> integrity.

If this was a java or c++ list, all this rant would be more
understandable, but bashing dynamic typing in a dynamic language list
seems pointless at best (as this has been beaten to death over and over
again), flamebait at worst. It should be clear by now that there are
two (at least) alternatives:
1. Validate the data in python before (or at the same time when)
feeding the DB.
2. Forget sqlite and use a statically typed DBMS; it's not like there
is a shortage of them.

Massaging your SQL statements to make up for the lack of type checking
(even if this is always possible)  would be a bad idea for more than
one reasons (complexity,portability,performance), so you'd better not
go down this road.

George



From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep  4 03:35:32 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 4 Sep 2006 09:35:32 +0200
Subject: Exception EOFError.
References: <1157329590_32385@sp6iad.superfeed.net>
	<L2LKg.2681$v%4.628@newsread1.news.pas.earthlink.net>
Message-ID: <slrnefnlq4.i65.sybrenUSE@schuimige.stuvel.eu>

Dennis Lee Bieber enlightened us with:
> The above is windows, I believe Linux uses <ctrl-d> instead of
> <ctrl-z>

That's correct. And so do all unix systems including MacOS X.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From jstroud at mbi.ucla.edu  Fri Sep  8 16:57:54 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 08 Sep 2006 20:57:54 GMT
Subject: best split tokens?
In-Reply-To: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
Message-ID: <mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>

Jay wrote:
> Let's say, for instance, that one was programming a spell checker or
> some other function where the contents of a string from a text-editor's
> text box needed to be split so that the resulting array has each word
> as an element.  Is there a shortcut to do this and, if not, what's the
> best and most efficient token group for the split function to achieve
> this?
> 

I'm sure this is not perfect, but it gives one the general idea.

py> import re
py> rgx = re.compile(r'(?:\s+)|[()\[\].,?;-]+')
py> print astr

              Four score and seven years ago, our
              forefathers, who art in heaven (hallowed be their names),
              did forthwith declare that all men are created
              to shed their mortal coils and to be given daily
              bread, even in the best of times and the worst of times.

              With liberty and justice for all.

              -William Shakespear

py> [s for s in rgx.split(astr) if s]
['Four', 'score', 'and', 'seven', 'years', 'ago', 'our', 'forefathers', 
'who', 'art', 'in', 'heaven', 'hallowed', 'be', 'their', 'names', 'did', 
'forthwith', 'declare', 'that', 'all', 'men', 'are', 'created', 'to', 
'shed', 'their', 'mortal', 'coils', 'and', 'to', 'be', 'given', 'daily', 
'bread', 'even', 'in', 'the', 'best', 'of', 'times', 'and', 'the', 
'worst', 'of', 'times', 'With', 'liberty', 'and', 'justice', 'for', 
'all', 'William', 'Shakespear']


James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From limodou at gmail.com  Thu Sep 14 20:44:11 2006
From: limodou at gmail.com (limodou)
Date: Fri, 15 Sep 2006 08:44:11 +0800
Subject: Looking for the Perfect Editor
In-Reply-To: <4509BEDC.9090100@cox.net>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
	<4509BEDC.9090100@cox.net>
Message-ID: <505f13c0609141744i7a347521sa33f68e83732844@mail.gmail.com>

On 9/15/06, Roger <crosseyedpenguin at cox.net> wrote:
> Jay wrote:
> > I, too, am a hardcore fan of jEdit.  It's nice to finally see some user
> > support on this forum.  :-)
>
>
> The biggest problem I have with anything written in Java is the long
> startup time.  The editor may be great but the platform is mediocre.
>
> I am a SciTE bigot.  I have recently tried SPE and UliPad.  UliPad would
> be my second choice and is still installed, but SPE was quickly removed.
>   One feature I like about SciTE is being able to position the cursor
> anywhere on a word and hit CTL-F to find the NEXT occurrence.
>
> With UliPad, you have to select the entire word you want to search for,
> and then when you hit CTL-F -- it first finds the same occurrence you
> selected -- you have to hit F3 to find the next.
>
No, in UliPad you can first select the word(double-click the word),
then press F4 to locate the next position.

And if you install the newest source version of UliPad, it also
suplied an enhanced Input Assistant feature, as type some character in
blank place, it'll popup a list which will match what you type,
including identifiers, class names, function names, parameters names,
etc. And there is also a vim-like shortkey, Ctrl+P, Ctrl+Shift+P,
Ctrl+L, Ctrl+Shift+L(which are in Duplicate menu), they'll match the
word backward or forward to
current position, you can try it.
> I think SciTE is better engineered.  Still, much of your choice is
> personal preference.  I have noticed that any two people using the same
> editor will use different keystroke and mouse sequences when presented
> with similar editing problems.
>
> Good discussion - I thank the originator of the thread.
>
> Roger
>
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
I like python!
My Blog: http://www.donews.net/limodou
UliPad Site: http://wiki.woodpecker.org.cn/moin/UliPad
UliPad Maillist: http://groups.google.com/group/ulipad


From neoedmund at gmail.com  Fri Sep  8 01:24:49 2006
From: neoedmund at gmail.com (neoedmund)
Date: 7 Sep 2006 22:24:49 -0700
Subject: help with unicode email parse
In-Reply-To: <1157688075.918718.63480@b28g2000cwb.googlegroups.com>
References: <1157378961.284028.55840@m79g2000cwm.googlegroups.com>
	<1157416665.006114.63170@h48g2000cwc.googlegroups.com>
	<1157425054.822558.228950@74g2000cwt.googlegroups.com>
	<1157465231.163700.279630@h48g2000cwc.googlegroups.com>
	<1157465543.794948.79000@i3g2000cwc.googlegroups.com>
	<1157471114.594330.123480@m73g2000cwd.googlegroups.com>
	<1157471386.436178.151310@m73g2000cwd.googlegroups.com>
	<1157510240.237102.202190@h48g2000cwc.googlegroups.com>
	<1157526684.506238.192580@i3g2000cwc.googlegroups.com>
	<1157601601.965201.95710@e3g2000cwe.googlegroups.com>
	<1157604050.886228.267330@p79g2000cwp.googlegroups.com>
	<1157627312.123904.76620@m73g2000cwd.googlegroups.com>
	<1157683777.315563.95960@d34g2000cwd.googlegroups.com>
	<1157688075.918718.63480@b28g2000cwb.googlegroups.com>
Message-ID: <1157693089.096269.191580@b28g2000cwb.googlegroups.com>

john , you can look my code:
it downloads email and save to local filesystem(filename and email
contains non-english characters)
it works now.
but i still think python's unicode string is not as straightforward as
java's
string SHOULD always be unicode. or i'm trouble dealing them when they
are in different encodings. because before using it, i must try to find
what encoding it use, unicode or 8bit. and why the system use ascii to
decode. you have explained some, but i cannot catch up you. however i
never have encoding problem using string in java.

#-*- coding:utf8 -*-
import poplib
from poplib import POP3
import Utils
#from datetime import datetime
import time
import email
from email.Header import decode_header

conf = Utils.getValues()

def getMail():
	a = POP3( conf.get( "mailhost" ) )
	print a.getwelcome()
	a.user( conf.get( "mailuser" ) )
	a.pass_( conf.get( "mailpass" ) )
	a.list()
	( numMsgs, totalSize ) = a.stat()
	print "==begin==total %s mail,%s bytes" % ( numMsgs, totalSize )
	for i in range( 1, numMsgs + 1 ):
		( header, msg, octets ) = a.retr( i )
		print "Message %d:" % i
		text= list2txt( msg )
		save( text )
		#print octets
		#print header
	a.quit()
	print "==finish==total %s mail,%s bytes" % ( numMsgs, totalSize )

def list2txt( l ):
	return reduce( lambda x, y:x+"\r\n"+y, l )


def save( text ):
	stamp = getStamp()
	store=conf.get( "mailstore" )
	msg = email.message_from_string( text )
	path = getPath( text, msg )
	title = decode_header( msg["Subject"] )
	title= title[0][0]
	title= title.decode( "utf8" )
	print repr( title )
	title = encodeFilename( title )
	print repr( title )
	fn = "%s/%s/%s-%s.mail"%( store.encode( "utf8" ),
							path.encode( "utf8" ),
							stamp.encode( "utf8" ),
							title )
	print repr( fn )
#	fn = fn.decode( "utf8" )

	import os
	path =os.path.dirname( fn )
	if not os.path.exists( path ) :
		os.makedirs( path )

	print repr( fn )
	f = file( fn, "wb" )
	f.write( text )
	f.close()

def encodeFilename( s ):
	slist=[]
	for ch in s:
		#print "CH", repr( ch )
		if "\":?*/\\<>|".find( ch ) >= 0:
			#print "here"
			slist.append( "_" )
		else:
			#print "there"
			slist.append( ch )
	#print repr( slist )
	return "".join( slist )
#encodeFilename( "abc:dd" )


def getPath( text, msg ):
	import Classify
	return Classify.run( text, msg )


def getStamp():
	s = repr( int( time.clock() * 1000000000000000L ) )
	#print s
	return unicode( s )
#print repr( getStamp() )

def test():
	subject = decode_header( "=?UTF-8?B?5rWL6K+V?=" )
	print "s1=", repr( subject )
	t1 = subject[0][0]
	print "t1=", repr( t1 )
	fn = "%s/%s-%s.mail"%( "d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95'
)
	print "fn=", repr( fn )
	fn = fn.decode( "utf8" )
	print "fn=", repr( fn )
	f = file( fn, "wb" )
	f.write( "test" )
	f.close()

#test()
getMail()
John Machin wrote:
> neoedmund wrote:
> [top-posting corrected]
> > John Machin wrote:
> > > neoedmund wrote:
> > > > i want to get the subject from email and construct a filename with the
> > > > subject.
> > > > but tried a lot, always got error like this:
> > > > UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 4:
> > > > ordinal not in range(128)
> > > >
> > > >
> > > > 	msg = email.message_from_string( text )
> > > > 	title = decode_header( msg["Subject"] )
> > > > 	title= title[0][0]
> > > > 	#title=title.encode("utf8")
> > >
> > > Why is that commented out?
> > >
> > > > 	print title
> > > > 	fn = ""+path+"/"+stamp+"-"+title+".mail"
> > > >
> > > >
> > > > the variable "text"  come from sth like this:
> > > > ( header, msg, octets ) = a.retr( i )
> > > > text= list2txt( msg )
> > > > def list2txt( l ):
> > > > 	return reduce( lambda x, y:x+"\r\n"+y, l )
> > > >
> > > > anyone can help me out? thanks.
> > >
> > > Not without a functional crystal ball.
> > >
> > > You could help yourself considerably by (1) working out which line of
> > > code the problem occurs in [the traceback will tell you that] (2)
> > > working out which string is being decoded into Unicode, and has '\xe9'
> > > as its 5th byte. Either that string needs to be decoded using something
> > > like 'latin1' [should be specified in the message headers] rather than
> > > the default 'ascii', or the code has a deeper problem ...
> > >
> > > If you can't work it out for yourself, show us the exact code that ran,
> > > together with the traceback. If (for example) title is the problem,
> > > insert code like:
> > >     print 'title=', repr(title)
> > > and include that in your next post as well.
> > >
> > > HTH,
> > > John
> > thank you John and Diez.
> > i found
> > fn = "%s/%s-%s.mail"%("d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95' )
> > is ok
> > fn = "%s/%s-%s.mail"%(u"d:/mail", "12345", '\xe6\xb5\x8b\xe8\xaf\x95' )
> > results:
> > UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 0:
> > ordinal not in range(128)
> > So "str"%(param) not accept unicode, only accept byte array?
>
> No, quite the contrary. And that's no "byte array", it's a string.
>
> The first substitution is in unicode, so the "%" operation  ups the
> ante from 8-bit string, and tries to decode the remaining
> substitutions, using the default ascii codec, which barfs on the 3rd
> substitution, which isn't ascii.
>
> If you want fn to be in some 8-bit encoding, then don't put the u in
> front of the first substitution.
> If you want fn to be in unicode, then you'll have to determine what
> encoding you're dealing with, and specify that explicitly.
>
> By the way, what has this "fn" stuff to do with your original problem?
> 
> Cheers,
> John



From martin at v.loewis.de  Sun Sep 10 04:52:28 2006
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Sun, 10 Sep 2006 10:52:28 +0200
Subject: Can I make unicode in a repr() print readably?
In-Reply-To: <mailman.218.1157834965.5279.python-list@python.org>
References: <mailman.218.1157834965.5279.python-list@python.org>
Message-ID: <4503D24C.8020905@v.loewis.de>

Terry Hancock schrieb:
> Is it possible to define some combination of __repr__, __str__,
> and/or __unicode__ so that the unicode() wrapper isn't necessary
> in this statement:

I'm not aware of a way of doing so.

> Or, put another way, what exactly does 'print' do when it gets
> a class instance to print? It seems to do the right thing if
> given a unicode or string object, but I cant' figure out how to
> make it do the same thing for a class instance.

It won't. PyFile_WriteObject checks for Unicode objects, and whether
the file has an encoding attribute set, and if so, encodes the
Unicode object.

If it is not a Unicode object, it falls through to PyObject_Print,
which first checks for the tp_print slot (which can't be set in
Python), then uses PyObject_Str (which requires that the __str__
result is a true byte string), or PyObject_Repr (if the RAW
flag isn't set - it is when printing). PyObject_Str first checks
for tp_str; if that isn't set, it falls back to PyObject_Repr.

> And I understand that I might want that if I'm working in
> an ASCII-only terminal.  But it's a big help to be able to
> read/recognize the labels when I'm working with localized
> encodings, and I'd like to save the extra typing if I'm
> going to be looking at a lot of these

You can save some typing, of course, with a helper function:

def p(o):
  print unicode(o)

I agree that this is not optimal; contributions are welcome.
It would probably be easiest to drop the guarantee that
PyObject_Str returns a true string, or use _PyObject_Str
(which does not make this guarantee) in PyObject_Print.
One would have to think what the effect on backwards
compatibility is of such a change.

Regards,
Martin


From MonkeeSage at gmail.com  Fri Sep 29 20:56:52 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 29 Sep 2006 17:56:52 -0700
Subject: DAT file compilation
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
	<4o5qhvFd1bddU1@uni-berlin.de>
	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>
	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>
	<1159576888.862008.286980@m73g2000cwd.googlegroups.com>
Message-ID: <1159577812.711719.37400@m73g2000cwd.googlegroups.com>

Jay wrote:
> Is there a way through python that I can take a few graphics and/or
> sounds and combine them into a single .dat file?  If so, how?  And how
> can I access the data in the .dat file from inside the python script?

How about in a sqlite database? Sqlite has built-in bindings in python
2.5 and is available as a third-party extension in previous versions.
It's also pretty easy to use, but makes you data harder to tamper with
by an average windows user.

http://docs.python.org/lib/module-sqlite3.html (See also the "See Also"
section ;) ).

Regards,
Jordan



From enleverlesX.XmcX at XmclaveauX.com  Sun Sep 17 04:27:23 2006
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI)
Date: Sun, 17 Sep 2006 10:27:23 +0200
Subject: Looking for a python IDE
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <450d198f$0$27401$ba4acef3@news.orange.fr>

Hi!

Perso, I like komodo.
But :
  - littles pb with (very) big scripts
  - slow to start
  - no french version...

@-salutations

Michel Claveau








From larry.bates at websafe.com  Wed Sep  6 14:23:44 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 06 Sep 2006 13:23:44 -0500
Subject: Secure Postgres access
In-Reply-To: <pan.2006.09.06.16.21.55.818191@reidster.net>
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
Message-ID: <44FF1230.4040906@websafe.com>

Reid Priedhorsky wrote:
> Hi folks,
> 
> I would like to access a remote Postgres server from a Python program in a
> secure way. Postgres doesn't currently listen to the Internet for
> connections, and I'd prefer to keep it that way.
> 
> I know how to forward ports using SSH, but I don't like doing this because
> then anyone who knows the port number can connect to Postgres over the
> same tunnel. (I'm not the only user on the client machine.)
> 
> What I envision is something like wrapping an SSH connection which then
> opens psql once connected, but I'm not too picky.
> 
> Both Postgres and the Python program are running on Linux.
> 
> Any ideas?
> 
> Thanks very much for any help.
> 
> Reid

Use port forwarding over SSH and use only pubkey authorization so that
you put their pubkey in authorized_keys on the server for SSH connection.
Put something like 'LocalForward 3308 databaseserver:3308' in your ssh
client config file (I don't know if you are using putty or cygwin) and
then point the Python program to localhost:3308 This then gets redirected
to proper port on the remote machine.  Works great and the traffic is
encrypted and I know who the user is because they can't connect until
they give me their pubkey and I put on the server and they must have
their private key AND passphrase to establish the SSH connection.

I use this to run pgAdmin III remotely through a firewall to my
database server.

-Larry Bates


From ilias at lazaridis.com  Wed Sep 20 06:31:50 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 20 Sep 2006 03:31:50 -0700
Subject: SETUP - Introducing "setuptools" to a project without risk
In-Reply-To: <1158554557.797891.233280@k70g2000cwa.googlegroups.com>
References: <1158554557.797891.233280@k70g2000cwa.googlegroups.com>
Message-ID: <1158748310.336384.227290@b28g2000cwb.googlegroups.com>

Ilias Lazaridis wrote:
> If I understood things right, setuptools extends the functionality of
> distutils
>
> Thus replacing within a setup.py:
>
> from distutils.core import setup
>
> with
>
> try:
>     from setuptools import setup
> except ImportError:
>     from distutils.core import setup
>
> should have the following behaviour:
>
> * does not change distutils functionality on any system (with or
> without setuptools installed)
> * adds setuptools functionality on a system with setuptools installed
>
> This is especially important to obtain the convenient "python setup.py
> develop" command.
>
> Can someone confirm that the addition is non-critical? (I've not asked
> on the setuptools list in order to get a neutral view of users).
>
> context: http://trac.edgewall.org/ticket/3743

After some conversation with the setuptools developer I've understood
that I had wrong assumptions.

setuptools alters the behaviour of the original distutils commands,
thus the migration in such a way could cause problems.

As suggested by the trac-team, the following is the workaround to use
the setuptools develop command:

python -c "import setuptools; execfile('setup.py')" develop

-

I think setuptools should be non-intrusive. All existent distutils
commands should remain unaltered, exept if the user configures it
differently. This would simplify migration to setuptools, as the
project lead does not have to worry about potential problems.

> --
> http://lazaridis.com



From fredrik at pythonware.com  Wed Sep 27 14:16:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 20:16:52 +0200
Subject: Difference between two dates in seconds
In-Reply-To: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
Message-ID: <efef6j$5au$2@sea.gmane.org>

Claes at work wrote:

> Please tell me there is a simpler way than subtracting two datetimes
> to get a timedelta and then compute
> 
> days * number of seconds per day + seconds
> 
> from it myself??

why would you have to do that yourself?  why not let Python do it for 
you?  here's the code:

    seconds = td.days * 86400 + td.seconds

</F>



From onurb at xiludom.gro  Fri Sep 15 07:48:44 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 15 Sep 2006 13:48:44 +0200
Subject: add without carry
In-Reply-To: <450a81be$0$31676$626a54ce@news.free.fr>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
	<450a7e5c$0$14661$626a54ce@news.free.fr>
	<450a81be$0$31676$626a54ce@news.free.fr>
Message-ID: <450a931c$0$31654$626a54ce@news.free.fr>

Christophe wrote:
> Bruno Desthuilliers a ?crit :
>> Bryan Olson wrote:
>>> Hugh wrote:
>>>> Sorry, here's an example...
>>>>
>>>> 5+7=12
>>>>
>>>> added without carrying, 5+7=2
>>>>
>>>> i.e the result is always less than 10
>>> Are you looking for bitwise exclusive or? In Python it's
>>> the '^' operator. For example:
>>>
>>>     print 5 ^ 7
>>>
>>>
>>>>> 10 ^ 21
>> 31
>>
>> Not really "less than 10"...
> 
> But you must use numbers smaller than 10 as input! Still :
> 
>>>> 8 ^ 2
> 10
> :D

Still fails:
>>> 8 ^ 7
15

Sorry !-p



-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From sjmachin at lexicon.net  Wed Sep 20 03:39:34 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 00:39:34 -0700
Subject: byte count unicode string
In-Reply-To: <mailman.315.1158736972.10491.python-list@python.org>
References: <mailman.315.1158736972.10491.python-list@python.org>
Message-ID: <1158737974.490027.71860@k70g2000cwa.googlegroups.com>


willie wrote:
> Marc 'BlackJack' Rintsch:
>
>  >In <mailman.313.1158732191.10491.python-l... at python.org>, willie wrote:
>  >> # What's the correct way to get the
>  >> # byte count of a unicode (UTF-8) string?
>  >> # I couldn't find a builtin method
>  >> # and the following is memory inefficient.
>
>  >> ustr = "example\xC2\x9D".decode('UTF-8')
>
>  >> num_chars = len(ustr)    # 8
>
>  >> buf = ustr.encode('UTF-8')
>
>  >> num_bytes = len(buf)     # 9
>
>  >That is the correct way.
>
>
> # Apologies if I'm being dense, but it seems
> # unusual that I'd have to make a copy of a
> # unicode string, converting it into a byte
> # string, before I can determine the size (in bytes)
> # of the unicode string. Can someone provide the rational
> # for that or correct my misunderstanding?
>

You initially asked "What's the correct way to get the  byte countof a
unicode (UTF-8) string".

It appears you meant "How can I find how many bytes there are in the
UTF-8 representation of a Unicode string without manifesting the UTF-8
representation?".

The answer is, "You can't", and the rationale would have to be that
nobody thought of a use case for counting the length of the UTF-8  form
but not creating the UTF-8 form. What is your use case?

Cheers,
John



From paul at boddie.org.uk  Fri Sep 29 09:48:07 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 29 Sep 2006 06:48:07 -0700
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.847.1159402807.10491.python-list@python.org>
	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>
	<slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
	<mailman.892.1159459686.10491.python-list@python.org>
	<slrnehnuut.bmu.sybrenUSE@schuimige.stuvel.eu>
	<pan.2006.09.28.23.45.23.622848@vfx.org.uk>
Message-ID: <1159537687.406535.264340@c28g2000cwb.googlegroups.com>

Mike Playle wrote:
> Worry instead about the people who DON'T want to use it illegitimately. Can a license key
> scheme help them?

That's "help them" as in "we can help you to stay in our good books and
avoid us dragging you through the courts, you bad people", I presume?
Hardly a vendor-customer relationship I'd want to get into as the
customer.

I've had experience with both hardware protection schemes (unreliable)
and floating licences (annoying, since users tend to "drop anchor"),
and both schemes penalise the people who've paid for (or have been
bought) software whilst supposedly inconveniencing those who will
nevertheless have cracked the software within a short period of time
before exchanging it with friends and strangers. So, the software will
probably roam around of its own accord, anyway. Here, the moderating
factor in propagation is (or should be amongst people with any degree
of cautiousness) the lack of trust in the cracked product: what malware
also gets installed along with the original software?

Meanwhile, the big company scenario that advocates of restrictive
technical licensing solutions like to mention actually suggests
incompetence in the management of customer relations at such companies:
you sell the big company five licences of your software because they
tell you that's all they need, but you secretly suspect that everyone
is using the software. But any interest in the number of people using
the software is presumably driven by some per-seat pricing that could
be totally inappropriate. Some desire to have a 1980s-style
shrinkwrapped box retail price tag has constrained the business's
ability to judge the value of the software on a case-by-case basis,
which you'd want to do with important customers. The big company might
not be an important customer as it turns out, but by focusing on the
relationship itself, rather than auditing and threatening them, you
might actually get a chance to find this out in a way which presents
opportunities other than a face-off in court.

Interestingly, the innovation in this area would seem to be happening
either in companies offering dual-licensed solutions, where one of the
licences is the GPL, or even in companies only offering GPL-licensed
solutions but with paid support options available in addition. That's
how stagnant the style of proprietary software business referred to
here would appear to be with respect to business innovation these days.

Paul



From Eric_Dexter at msn.com  Sat Sep 16 10:27:42 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 16 Sep 2006 07:27:42 -0700
Subject: RegexBuddy (anyone use this?)
Message-ID: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>

Has anyone tried this thing..
http://www.regular-expressions.info/regexbuddy.html

If I had $30 would this be worth getting or should I just try to learn
the manual.  (I was hopeing the essential refrence would clear things
up but I am downloading a gilgillion pages on the re module to try to
learn it)

http://www.dexrow.com



From tim at tdw.net  Fri Sep 29 13:21:57 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 29 Sep 2006 18:21:57 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <R53647830.480.1590.1@mx-extra>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<mailman.949.1159543590.10491.python-list@python.org>
	<W53645725.803.1323.1@mx-extra>
	<mailman.957.1159547987.10491.python-list@python.org>
	<R53646951.569.1564.1@mx-extra>
	<mailman.960.1159549187.10491.python-list@python.org>
	<R53647830.480.1590.1@mx-extra>
Message-ID: <9afea2ac0609291021y3cc044e0nb53816fece71da09@mail.gmail.com>

On 29 Sep 2006 10:04:15 -0700, Paul Rubin
<"http://phr.cx"@nospam.invalid> wrote:
> "Tim Williams" <tim at tdw.net> writes:
> > That's the same kind of principle as my posted snippet,  it doesn't
> > rely on the file's presence or absence as such.  It only cares when
> > the file exists *and* is held open by another process.    When the
> > process exits,  the lock ends without needing to clean up.
> >
> > It works on Windows, but that doesn't help the OP :)
>
> Huh?  Fcntl is on linux.

No, my snippet does  LOL :)


From martin at v.loewis.de  Wed Sep 13 11:38:29 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 13 Sep 2006 17:38:29 +0200
Subject: How to write UNIX daemons in Python?
In-Reply-To: <1158137951.766580.321020@e3g2000cwe.googlegroups.com>
References: <1158137951.766580.321020@e3g2000cwe.googlegroups.com>
Message-ID: <450825f5$0$16520$9b622d9e@news.freenet.de>

gnewsg at gmail.com schrieb:
> What should I use to do something like that? Do I have to use
> distutils? Do I have to use third party packages? Do I have to write a
> "setup.py" and solve the problem manually?
> This last solution is problematic becouse, for (dumb) example, Debian
> wants executable/programs to be located in /usr/bin while Fedora uses
> another path (for example /usr/sbin).
> 
> Another question: what about .deb, .rpm, [...] packages?
> Does it possible to use them with Python programs?
> Resolving third party dependancies by using them could be a nice thing.

I would create packages, and therefore restrict attention to the
systems that are to be supported.

For RPM, there is a distutils bdist_rpm command which can help in
generating the RPM. OTOH, it might be actually easier to write a .spec
file and build the RPM "manually".

For .deb, there is also a bdist_deb distutils command (although not
part of the standard Python distribution), again, it is likely easier
to use the standard Debian packaging tool chain (i.e. with an
explicit debian/ subdirectory, initially populated with dh_make).

In either case, it is probably a good idea to look at source packages
to get started quickly.

FWIW, Debian does *not* put daemon programs in /usr/bin. Debian
follows the FHS, which specifies that system binaries go into
/usr/sbin. /usr/bin is limited to user programs.

Regards,
Martin


From exogen at gmail.com  Thu Sep  7 23:58:17 2006
From: exogen at gmail.com (Brian Beck)
Date: Thu, 07 Sep 2006 23:58:17 -0400
Subject: [ANN] geopy: a Geocoding Toolbox for Python
Message-ID: <edqpof$ca0$1@eeyore.INS.cwru.edu>

Hello Pythonistas,

I'm happy to announce the first (alpha) release of geopy, a geocoding
toolbox for Python: http://exogen.case.edu/projects/geopy/

ABOUT

geopy includes five geocoders and some methods to make dealing with geocoded
data easier (such as parsing numerous latitude & longitude formats).

The geocoders are: Google, Yahoo!, geocoder.us, MediaWiki (with the GIS
extension), and Semantic MediaWiki. Examples of using each are given on the
site: http://exogen.case.edu/projects/geopy/

The source is only in Subversion for now.

INSTALL

>From the Subversion repository:
$ svn co svn://exogen.case.edu/geopy/trunk geopy-trunk
$ cd geopy-trunk/
$ sudo python setup.py install

...or use easy_install:
$ sudo easy_install svn://exogen.case.edu/geopy/trunk


Questions, comments, and bug reports can be directed to: exogen at gmail.com

-- 
Brian Beck
Adventurer of the First Order


From tim at tdw.net  Thu Sep  7 19:58:04 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 8 Sep 2006 00:58:04 +0100
Subject: Extracting text from a string
In-Reply-To: <R51762242.230.8556.1@mx-extra>
References: <R51762242.230.8556.1@mx-extra>
Message-ID: <9afea2ac0609071658h7c29ffdci838b05b13d15123@mail.gmail.com>

On 07/09/06, Anthra Norell <anthra.norell at tiscalinet.ch> wrote:
> s = '''<span class="sale">
>      $14.99
>     </span>, <span class="sale">
>      $27.99
>     </span>, <span class="sale">
>      $66.99
>     </span>, <span class="sale">
>      $129.99
>     </span>, <span class="sale">
>      $254.99
>    </span>'''
>
> >>> for line in [l.strip () for l in s.splitlines ()]:
>           if line [0] == '$': print line
>
> $14.99
> $27.99
> $66.99
> $129.99
> $254.99
>
> Why parse? Why regular expressions?
>


>>> print '\n'.join([i for i in s.splitlines() if i[0] == '$'])
$14.99
$27.99
$66.99
$129.99
$254.99

and
>>> print '\n'.join([i.strip() for i in s.splitlines () if i [0] == '$'])
parses with no trailing whitespace

:)


From bkovitz at acm.org  Wed Sep 13 12:20:57 2006
From: bkovitz at acm.org (Ben Kovitz)
Date: 13 Sep 2006 09:20:57 -0700
Subject: Tkinter on Python 2.4 on Mac OS X?
In-Reply-To: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>
References: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>
Message-ID: <1158164457.310716.207170@h48g2000cwc.googlegroups.com>

Well, I've made some progress--mostly installing and re-installing
things to make sure I've got the latest version.  I finally got the
"Hello World" program at http://docs.python.org/lib/node718.html to
work, but only under Python 2.3.  Under Python 2.4, both "Hello World"
and IDLE just sit there with a spinning beachball, and won't exit until
I give them a SIGQUIT.  This is all on a Mac running OS X 10.3.9.

Has anyone gotten Tkinter running with Python 2.4 on a Mac?

Thanks,

Ben Kovitz



From martin at v.loewis.de  Sat Sep 23 02:03:47 2006
From: martin at v.loewis.de (=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 23 Sep 2006 08:03:47 +0200
Subject: distutils on Windows with VC++ 8
In-Reply-To: <Xns9846DDC7A18E0rtwfreenetREMOVEcouk@216.196.109.145>
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
	<45136400.5030600@v.loewis.de>
	<Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>
	<4514479B.5070808@v.loewis.de>
	<Xns9846DDC7A18E0rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <4514CE43.3090407@v.loewis.de>

Rob Williscroft schrieb:
> Having read Noel Byron's reply also, I'm tempted to say there is 
> some confusion here between a Visual *Studio* toolkit (VS 2003) 
> and a Visual *C++* toolkit (VC 2003).

Ah, that could well be.

Regards,
Martin


From andymac at bullseye.apana.org.au  Sun Sep 10 18:10:58 2006
From: andymac at bullseye.apana.org.au (Andrew MacIntyre)
Date: Mon, 11 Sep 2006 09:10:58 +1100
Subject: Ghostscript interface
In-Reply-To: <1157901268.537694.132250@d34g2000cwd.googlegroups.com>
References: <1157901268.537694.132250@d34g2000cwd.googlegroups.com>
Message-ID: <45048D72.9070006@bullseye.andymac.org>

defcon8 wrote:
> Does a ghostscript interface for python exist? I have searched google
> quite a bit and all I have been able to find are command line hacks
> from within python. Thanks in advance for any useful help.

I'm not aware of a specific interface to the Ghostscript API, but it is
trivial to implement one with ctypes (included with 2.5).

-- 
-------------------------------------------------------------------------
Andrew I MacIntyre                     "These thoughts are mine alone..."
E-mail: andymac at bullseye.apana.org.au  (pref) | Snail: PO Box 370
        andymac at pcug.org.au             (alt) |        Belconnen ACT 2616
Web:    http://www.andymac.org/               |        Australia


From metaperl at gmail.com  Sat Sep 23 01:50:12 2006
From: metaperl at gmail.com (metaperl)
Date: 22 Sep 2006 22:50:12 -0700
Subject: Application logging to screen and file - any favorite modules (no
	luck on cheeseshop)
Message-ID: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>

Hello, I am looking for a module which has
* log levels
* output to stdout and file (either/or based on config)
* nicely formatted log output (e.g., indentation when appropriate)

I tried to use cheeseshop to find such a module, but came up short. I
clicked on
Browse Tree -> Software Development but then did not see a subcategory
for logging, so did not know where to look. I then typed log into the
search box, but that didn't really turn up the modules which had login
their description so I posted here.



From steve at holdenweb.com  Tue Sep 19 08:27:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 08:27:22 -0400
Subject: How to efficiently proceed addition and subtraction in python
	list?
In-Reply-To: <1158653474.356424.319980@d34g2000cwd.googlegroups.com>
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>	<mailman.245.1158619745.10491.python-list@python.org>
	<1158653474.356424.319980@d34g2000cwd.googlegroups.com>
Message-ID: <eeonls$sdt$1@sea.gmane.org>

Ant wrote:
> Tim Chase wrote:
> 
>>>I have a list AAA = [1, 2, 3] and would like to subtract one from list
>>>AAA
>>>so AAA' = [0, 1, 2]
>>>
>>>What should I do?
>>
>>
>>Sounds like a list comprehension to me:
> 
> 
> Also the built in function 'map' would work:
> 
> 
>>>>a = [1,2,3]
>>>>b = map(lambda x: x-1, a)
>>>>b
> 
> [0, 1, 2]
> 
> List comprehensions are more pythonic, but map would probably be faster
> if performance was a (real) issue.
> 
And statements like that are probably going to annoy me ;-)

  >>> t = timeit.Timer("b = map(lambda x: x-1, a)", setup="a=[1,2,3]")
  >>> t.timeit()
2.4686168214116599
  >>> t = timeit.Timer("b = [x-1 for x in a]", setup="a=[1,2,3]")
  >>> t.timeit()
0.9930245324475635
  >>>

Any timing prediction involving the word "probably" isn't worth the 
paper it's written on (or even less if it's posted in a newsgroup ;-). 
If it's "probably" faster, and if performance is *really* important, you 
need to benchmark both options to remove the "probably". As the above 
test makes clear, your assertions are certainly untrue for 2.4.2 on Windows.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From stephen at theboulets.net  Mon Sep 25 16:51:23 2006
From: stephen at theboulets.net (stephen at theboulets.net)
Date: 25 Sep 2006 13:51:23 -0700
Subject: Printing a percent sign
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
Message-ID: <1159217483.513555.126120@e3g2000cwe.googlegroups.com>

Thanks -- a percent escapes itself when using %-formatting.

Stephen

step... at theboulets.net wrote:
> Hi all. How do I escape the "%" sign in a print statement so that it
> prints? Thanks.
> 
> Stephen



From chiucs at chipright.com.tw  Tue Sep 19 01:56:04 2006
From: chiucs at chipright.com.tw (Chiucs)
Date: Tue, 19 Sep 2006 13:56:04 +0800
Subject: How to efficiently proceed addition and subtraction in python
	list?
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
Message-ID: <eeo0to$p37$1@netnews.hinet.net>

try this
a=[1, 2, 3]
b=a[:]

"Daniel Mark" <danielmarkhot at gmail.com> ???
news:1158619411.713865.287810 at m73g2000cwd.googlegroups.com ???...
> Hello all:
>
> I have a list AAA = [1, 2, 3] and would like to subtract one from list
> AAA
> so AAA' = [0, 1, 2]
>
> What should I do?
>
>
> Thank you
> -Daniel
>




From raschulmanxx at verizon.net  Fri Sep  8 18:01:14 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Fri, 08 Sep 2006 22:01:14 GMT
Subject: Unicode / cx_Oracle problem
Message-ID: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>

Sorry to be back at the goodly well so soon, but...

...when I execute the following -- variable mean_eng_txt being
utf-16LE and its datatype nvarchar2(79) in Oracle:

 cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
     VALUES (:id,:mean)""",id=id,mean=mean)

I not surprisingly get this error message:

 "cx_Oracle.NotSupportedError: Variable_TypeByValue(): unhandled data
type unicode"

But when I try putting a codecs.BOM_UTF16_LE in various plausible
places, I just end up generating different errors.

Recommendations, please?

TIA,
Richard Schulman
(Remove xx for email reply)


From kylotan at gmail.com  Thu Sep  7 04:42:59 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 7 Sep 2006 01:42:59 -0700
Subject: getting quick arp request
In-Reply-To: <1157565629.691753.115910@e3g2000cwe.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>
	<1157565629.691753.115910@e3g2000cwe.googlegroups.com>
Message-ID: <1157618579.686511.274150@b28g2000cwb.googlegroups.com>

kondal wrote:
> > Something is limiting the TCP/IP connections from my python program at
> > 10 maximum at the same time.
> > I do not see this limit in my code.
> > I did not bumped over the 4226 error.
> >
> > => Where does this limit come from.
> > => How can I overcome it.
>
> You can just edit it by creating a new key in the registry.
>
> HKEY_LOCAL_MACHINE - SYSTEM - CurrentControlSet - Services -Tcpip -
> Parameters
>
> Create a DWORD key named "TcpNumConnections" and set the value to
> 00fffffe or 16777214.

That's the maximum number of connections, which is unlikely to be what
he's running up against. It's more likely the original poster is
hitting the max number of half-open connections, which is limited to 10
(exactly the figure he's seeing). Perhaps the 4226 event just isn't
appearing for some reason. I've had that myself sometimes.

There is an unofficial OS-level patch for this behaviour at this
address: http://www.lvllord.de/?lang=en&url=downloads

No idea if it works or if it's safe, but many people use it.

-- 
Ben Sizer



From mensanator at aol.com  Tue Sep  5 13:26:47 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 5 Sep 2006 10:26:47 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
Message-ID: <1157477207.223616.210780@h48g2000cwc.googlegroups.com>


Marc 'BlackJack' Rintsch wrote:
> In <1157418942.105174.228650 at p79g2000cwp.googlegroups.com>,
> mensanator at aol.com wrote:
>
> > But watch this: being clueless (but not stupid) is a gift I have
> > for troubleshooting. I tried (incorrectly) to insert another record:
> >
> > cur.execute("insert into book(title, author, published) values ('Dirk
> > Gently''s Holistic Detective Agency','Douglas Adams','1987')")
> >
> > (u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', 1987)
> > (u"Dirk Gently's Holistic Detective Agency", u'Douglas Adams', u'1987')
> >
> > Uhh...how can a database have a different field type for each record?
> >
> > Simple, without a cast when the table is created, the field type is
> > whatever you insert into it. That's how the default must work,
> > each record has a data structure independent of every other record!
> >
> > Wow. Just think of the kind of bugs *that* must cause.
> >
> > Bugs?
>
> It's not a bug, it's a feature.  And answered as third point in the FAQ:
>
> http://www.sqlite.org/faq.html#q3

Oh, so it is "This behaviour is by design".

>
> I think your whole experience is based on it.

But shouldn't a significant feature like that be explained
in the Python manuals? Why should I go dig up Sqlite
FAQs to learn what should have been in the manuals?

> Live with it or use a real RDBMS.

I don't mind living with it as long as it's documented.

>
> If you are so fond of static typing, why are you using Python in the first
> place?  Just see it as consistency -- dynamically typed language ?
> dynamically typed DB columns.  ;-)

Did you miss this statement in Section 13.13?

"If switching to a larger database such as PostgreSQL or Oracle
is later necessary, the switch should be relatively easy. "

Obviously, this is a new useage of "relatively easy" with which
I have been previously unaware.

> 
> Ciao,
> 	Marc 'BlackJack' Rintsch



From steve at holdenweb.com  Sat Sep 30 14:35:58 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 19:35:58 +0100
Subject: creating a small test server on my local computer
In-Reply-To: <451e9db3$0$14736$c3e8da3@news.astraweb.com>
References: <9bdTg.54$1n3.399@news.tufts.edu>	<451d684a$0$4516$e4fe514c@news.xs4all.nl>	<efeTg.56$1n3.620@news.tufts.edu>	<efjskl$23j$1@mlucom4.urz.uni-halle.de>	<1159600814.255059.56690@m73g2000cwd.googlegroups.com>
	<451e9db3$0$14736$c3e8da3@news.astraweb.com>
Message-ID: <efm9s9$5et$1@sea.gmane.org>

John Salerno wrote:
> Ant wrote:
> 
>>Mirco Wahab wrote:
>>
>>>Thus spoke John Salerno (on 2006-09-29 21:13):
>>
>>...
>>
>>>My advice would be (because Apache installations on
>>>WinXP don't usually support Python (except pulling
>>>the whole thing into each CGI invocation) - download
>>>and install a VMWare Player
>>
>>This sounds a horribly complicated way of doing things. If you read the
>>OP's post, it seems he is simply trying to serve straight HTML pages
>>(but with Server Side Includes) locally for testing, rather than having
>>to pester his operations guys to put them up on the company servers.
>>
>>If it's just HTML and SSI, then Apache is the easy answer on XP. The
>>download is a simple .msi installer, and you'll just be able to drop
>>the html files in the htdocs directory to start serving them.
>>(http://httpd.apache.org/download.cgi)
> 
> 
> Thanks! I'll look into this.

Yup, I'd second that as an approach. I have Apache on my XP system, with 
mod_python and all the trimmings.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From robert.kern at gmail.com  Wed Sep 27 14:31:42 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 27 Sep 2006 13:31:42 -0500
Subject: f2py on windows tutorials
In-Reply-To: <1159379142.839788.239930@k70g2000cwa.googlegroups.com>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>	<mailman.504.1159044688.10491.python-list@python.org>	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>	<mailman.730.1159299369.10491.python-list@python.org>	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>	<efcddb$itm$1@sea.gmane.org>	<mailman.753.1159314004.10491.python-list@python.org>	<1159364285.218632.35040@h48g2000cwc.googlegroups.com>	<mailman.812.1159377587.10491.python-list@python.org>
	<1159379142.839788.239930@k70g2000cwa.googlegroups.com>
Message-ID: <efeg29$9ln$1@sea.gmane.org>

Flavio wrote:
> Hi Robert,
> 
> Putting the .pyf first didn't do any good. I still get the same error
> message of unknown file type

That's ... odd. It works perfectly fine for scipy, and yet I can't get it to 
work, either, standing alone.

> However when I try to compile with f2py, all works perfectly! here is
> the command I used:
> 
> f2py -c flib.pyf flib.f --compiler=mingw32 --fcompiler=gnu
> 
> Note: if I use mingw instead of mingw32  it does not work!!

My apologies, you are right.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From wildemar at freakmail.de  Tue Sep 12 11:38:25 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Tue, 12 Sep 2006 17:38:25 +0200
Subject: "filtered view" upon lists?
In-Reply-To: <878xkpb5wa.fsf@gmail.com>
References: <mailman.337.1158062350.5279.python-list@python.org>
	<878xkpb5wa.fsf@gmail.com>
Message-ID: <4506D471.7010905@freakmail.de>

Jorge Godoy wrote:
 > Wildemar Wildenburger <wildemar at freakmail.de> writes:
 >
 >> I don't know how else to call what I'm currently implementing: An 
object that
 >> behaves like a list but doesn't store it's own items but rather 
pulls them
 >> from a larger list (if they match a certain criterion).
 >> Changes to the filter are instantly reflected in the underlying list.
 >> Clear enough?
 >
 > It looks like you're implementing a callable to me.  This is a method 
that
 > returns results based on some input -- here your original list and 
filter.
 > Then you'll use this method wherever you need that filtered list.
 >
Ok, so I'm not clear enough ;) .
I don't just want to extract certain elements from a list, I want an 
object that looks like a list, however all changes made to that object 
are automagically reflected in the original list. (I guess that is one 
of those 'if it's hard to explain, ...' cases.)

I should have included an example right away ... here goes:

# I have a list
l = [1, 2, 3, 4, 5, 6, 7]

# I then want to create a Filter instance
# (Filter beeing a *class* implemented by me)
# where isEven() returns True whenever an item of l
# should be included in f (in this case, even numbers).
# (I'm asking if something like this exists in the libs
# or elsewhere)
f = Filter(l, isEven)

# The desired behavior now goes something like this:
f
 >>> [2, 4, 6]
del f[1]
f
 >>> [2, 6]
l
 >>> [1, 2, 3, 5, 6, 7]
f.append(77)
f
 >>> [2, 6, 77]
# 77 being intentionally uneven
l
 >>> [1, 2, 3, 5, 6, 7, 77]
# could be [1, 2, 3, 5, 6, 77, 7] as well
# I don't care here

# and so forth ...

I think SQL views are the direct analog.

 > I don't believe it is generic.  Nobody knows your data specs or filtering
 > needs.
Hence the additional function in the Filter constructor ;) . You suggest 
the same thing below, so that is obviously no problem.

 > Use of list comprehension might make it easier to code this:
 >
 > <snip elaborate example>
I sort of wanted to avoid these. Though my lists shouldn't terribly 
long, so performance is not an issue so much. I simply want to avoid 
having two datasets that I have to sync. Major pain, I believe.


Coding all that really is quite straight forward, but it is a lot of 
mule-work. I hoped (no, I still hope) that there might be somethin like 
that around already.

A bit clearer now?

bye
wildemar


From steve at holdenweb.com  Thu Sep 28 05:48:57 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 10:48:57 +0100
Subject: License / Registration key enabled software
In-Reply-To: <87zmckkfl2.fsf@benfinney.id.au>
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<87zmckkfl2.fsf@benfinney.id.au>
Message-ID: <efg5on$39k$1@sea.gmane.org>

Ben Finney wrote:
> Mike Playle <usenet at vfx.org.uk> writes:
> 
> 
>>License keys exist to make it easier for honest users to remain
>>honest.
> 
> 
> What doubletalk. If usage restrictions were in *any* way what end users
> wanted, they'd choose software that has it over software that does
> not.
> 
> Usage restrictions serve *no* want of the end user.
> 
No, but usage reporting is very important to large organisations with 
enterprise copies of their applications. They want to stay in 
compliance, and it's notoriously hard to track usage.
> 
>>For instance a customer might want to buy a license to use your
>>software on up to 5 machines at once, but still have the software
>>installed on every machine in the company.
> 
> 
> This need is adequately served by not imposing usage restrictions. Any
> effective imposition of usage restrictions is hostile to the wants of
> the user.
> 
> If usage restrictions are brought into the picture, it is to serve the
> wants of someone else, *not* the end user. It is disingenuous to
> suggest otherwise.
> 
So you're suggesting that most people would rather be dishonest?

Otherwise you might as well say that any costs associated with using a 
piece of software (including purchase pricing) are "hostile to the wants 
of the user".
> 
>>License systems like FlexLM can work here, to make it easier for
>>them to ensure that they comply with the terms of the license.
> 
> 
> This is describing a want of the copyright holder, *not* the end user.
> 
I think your view is a little biased here.
> 
>>Forget about the people who'll crack your software. Ask yourself
>>whether a license key scheme offers anything to the people who won't
>>try to crack it. If it does, then actually implementing the scheme
>>becomes trivial; if it doesn't, then leave it out, because it won't
>>help against crackers.
> 
> 
> Very sound advice, I agree entirely.
> 
As do I. The sad thing is that the people most concerned about 
protection of intellectual property are often the ones whose IP is least 
likely to need protection.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From Pepe.Smythe at gmail.com  Wed Sep  6 19:03:11 2006
From: Pepe.Smythe at gmail.com (Super Spinner)
Date: 6 Sep 2006 16:03:11 -0700
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <ednc4f$ibl$1@newsreader2.netcologne.de>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
	<edn23m$s6$1@newsreader2.netcologne.de>
	<mailman.90.1157570501.5279.python-list@python.org>
	<ednc4f$ibl$1@newsreader2.netcologne.de>
Message-ID: <1157583791.744718.149580@m79g2000cwm.googlegroups.com>


Claudio Grondi wrote:
> tjreedy wrote:
> > "Claudio Grondi" <claudio.grondi at freenet.de> wrote in message
> > news:edn23m$s6$1 at newsreader2.netcologne.de...
> >
> >>I also erroneously assumed, that the first problem was detected during
> >>parsing ... so, by the way: how can I distinguish an error raised while
> >>parsing the code and an error raised when actually running the code?
> >
> >
> > Parsing detects and reports syntax errors and maybe something else if you
> > use non-ascii chars without matching coding cookie.  Other errors are
> > runtime.
> Let's consider
>    print '"Data

 ?"'
>
> In CPython 2.4.2 there is in case of non-ascii character:
>    sys:1: DeprecationWarning: Non-ASCII character '\xea' in file
> C:\IronPython-1.0-BugsOrFeatures.py on line 3, but no encoding
> declared; see http://www.python.org/peps/pep-0263.html for details
> "Data?? ?"
>
> IronPython does not raise any warning and outputs:
> "Data?? ?"
>
> So it seems, that IronPython is not that close to CPython as I have it
> expected.
> It takes much more time to run this above simple script in IronPython as
> in CPython - it feels as IronPython were extremely busy with starting
> itself.
>
> Claudio Grondi

IronPython is a .NET language, so does that mean that it invokes the
JIT before running actual code?  If so, then "simple short scripts"
would take longer with IronPython "busy starting itself" loading .NET
and invoking the JIT.  This effect would be less noticable, the longer
the program is.  But I'm just guessing; I've not used IronPython.



From DustanGroups at gmail.com  Sun Sep 17 09:38:59 2006
From: DustanGroups at gmail.com (Dustan)
Date: 17 Sep 2006 06:38:59 -0700
Subject: eval(repr(object)) hardly ever works
In-Reply-To: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <1158500339.861174.311750@e3g2000cwe.googlegroups.com>


Matthew Wilson wrote:
> I understand that idea of an object's __repr__ method is to return a
> string representation that can then be eval()'d back to life, but it
> seems to me that it doesn't always work.
>
> For example it doesn't work for instances of the object class:
>
> In [478]: eval(repr(object()))
> ------------------------------------------------------------
>    File "<string>", line 1
>      <object object at 0xf233e8>
>      ^
> SyntaxError: invalid syntax
>
> It seems to work for types like integers and dictionaries and lists,
> but not for much else.
>
> Any thoughts?
>
>
> --
> A better way of running series of SAS programs:
> http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles

You have to write the code to return a proper representation.



From bearophileHUGS at lycos.com  Thu Sep 28 19:38:59 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 28 Sep 2006 16:38:59 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <mailman.901.1159469166.10491.python-list@python.org>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<mailman.901.1159469166.10491.python-list@python.org>
Message-ID: <1159486739.858408.73100@i42g2000cwa.googlegroups.com>

Frederic Rentsch:
> Good idea, but shorter with ->
>  >>> SE.SE ('se_definition_files/int_to_binary.se') ('%X' % 987654321)
> '00111010110111100110100010110001'

Note that your version keeps the leading zeros.
Have you tested the relative speeds too?
(I'll probably have to learn to use SE.)

Bye,
bearophile



From ilias at lazaridis.com  Wed Sep  6 07:47:10 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 6 Sep 2006 04:47:10 -0700
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <44fe887c$0$29915$636a55ce@news.free.fr>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
	<1157129694.958006.40250@i3g2000cwc.googlegroups.com>
	<44fc4ebe$0$27243$636a55ce@news.free.fr>
	<1157463143.871754.119180@d34g2000cwd.googlegroups.com>
	<44fe887c$0$29915$636a55ce@news.free.fr>
Message-ID: <1157543229.858521.80420@i3g2000cwc.googlegroups.com>


Bruno Desthuilliers wrote:
> lazaridis_com wrote:
> > Bruno Desthuilliers wrote:
> >> lazaridis_com wrote:
> >>> ?/? Bruno Desthuilliers ??????:
> >>>> lazaridis_com wrote:
> >>>>> John Salerno wrote:
> >>>>>> Are there any major differences between these two? It seems they can
> >>>>>> both be used with TurboGears, and SQLAlchemy with Django. I'm just
> >>>>>> wondering what everyone's preference is, and why, and if there are even
> >>>>>> more choices for ORM.
> >>>>>>
> >>>>>> Thanks.
> >>>>> You can review the Persit Case, which will shortly evaluate the stated
> >>>>> ORM's:
> >>>>>
> >>>>> http://case.lazaridis.com/wiki/Persist
> >>>>>
> >>>>> It is possibly of importance to remember some requirements which should
> >>>>> be relevant for an persistency mechanism targetting an OO language:
> >>>> RDBMS are not "persistency mechanism", they are data management tools.
> >>> possibly.
> >>>
> >>> but this is not relevant, as the "Persist" case does not deal with
> >>> RDBMS.
> >>>
> >> Then your post is irrelevant since there's a clear indication that the
> >> OP question was about RDBMS integration in Python (hint: SQLObject and
> >> SQLAlchemy both start with 'SQL').
> > ...
> >
> > Of course it's relevant.
>
> Of course not.

You are right.

It's not relevant for _you_.

> > "I'm just wondering what everyone's preference is, and why, and if
> > there are even more choices for ORM."
>
> You may not know it but the R in ORM stands for Relational, which
> actually implies a RDBMS.

...which is completely irrelevant to _me_.

Thus I'm looking for an ORM which decouples the "R" part nicely.

> > The "persist case" evaluates python persistency
>
> Once again, it has nothing to do with persistency. I can use an ORM
> connected to an in-memory SQLite db.

What _you_ do is not _my_ use case.

> > systems (or mechanisms), and will show my personal preference:
>
> I don't give a damn about your "personal preferences".

_You_ are not the central part of this topic.

_I_ am not the central part of this topic.

The OP asked for "personal preferences":

 "I'm just wondering what everyone's preference is, and why, and if
there are even more choices for ORM."

I present my personal preferences here:

http://case.lazaridis.com/wiki/Persist

nothing special.
.



From onurb at xiludom.gro  Fri Sep  1 07:12:18 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 13:12:18 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <ed91hj$hdo$1@news.lysator.liu.se>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
Message-ID: <44f81592$0$6993$626a54ce@news.free.fr>

Joel Hedlund wrote:
>> I'm not sure that trying to fight against the language is a sound
>> approach, whatever the language. 
> 
> That's the very reason I posted in the first place. I feel like I'm
> fighting the language, and since python at least to me seems to be so
> well thought out in all other aspects, the most obvious conclusion must
> be that I'm thinking about this the wrong way. And that's why I need
> your input!

The first thing I tried to do when I discovered Python (coming from
statically typed langages) was to try to forcefit it into static typing.
Then I realized that there was a whole lot of non-trivial Python apps
and libs that did just work, which made me think about the real
usefulness of static typing. Which is mainly optimisation hints for the
machine. As you probably noticed, declarative static typing imposes much
boilerplate and somewhat arbitrary restrictions, and I still wait for a
proof that it leads to more robust programs - FWIW, MVHO is that it
usually leads to more complex - hence potentially less robust - code.

>>> > Or taken to the other extreme: Should I simply duck-type
>>> everything, and
>>> > only focus my validation efforts to external data (from users,
>>> external
>>> > applications and other forces of evil). 
>
>> IMHO and according to my experience : 99% yes (there are few corner
>> cases where it makes sens to ensure args correctness - which may or not
>> imply type-checking). Packages like FormEncode are great for data
>> conversion/validation. Once you have trusted data, the only possible
>> problem is within your code.
> 
> That approach is quite in line with the "blame yourself" methodology,
> which seems to work in most other circumstances. Sort of like,
> developers who feed bad data into my code have only themselves to blame!

As long as your code is correctly documented, yes. All attempts to write
idiot-proof librairy code as failed so far AFAICT, so just let idiots
suffer from their idiocy and focus on providing good tools to normal
programmers. My own philosophie of course...

> I can dig that. :-)
> 
> Hmmm... So. I should build grimly paranoid parsers for external data,

Most of the time, you'll find they already exists. FormEncode is not
just for html forms - it's a general, powerful and flexible (but alas
very badly documented) bidirectional data converter/validator.

> use duck-typed interfaces everywhere on the inside,

Talking about interfaces, you may want to have a look at PyProtocols
(PEAK) and Zope3 Interfaces.

> and simply callously
> disregard developers who are disinclined to read documentation? 

As long as you provide a usable documentation, misuse of your code is
not your problem anymore (unless of course you're the one misusing it !-).

> I could
> do that.
> 
>> if you're really serious, unit tests is the way to go - they can check
>> for much more than just types.
> 
> Yes, I'm very much serious indeed. But I haven't done any unit testing.

Then you probably want to read the relevant chapter in DiveIntoPython.

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From rhymes at myself.com  Sat Sep 16 04:23:55 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Sat, 16 Sep 2006 10:23:55 +0200
Subject: Looking for a python IDE
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <1hlr630.x2ou4ywrs08gN%rhymes@myself.com>

alfaeco at gmail.com <alfaeco at gmail.com> wrote:
> Any suggestions?

Maybe BlackAdder
http://www.thekompany.com/products/blackadder/

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From flupke at nonexistingdomain.com  Tue Sep 26 09:31:36 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Tue, 26 Sep 2006 13:31:36 GMT
Subject: odbc DbiDate date conversion
Message-ID: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>

I'm using a solid DB and i'm accessing it via the odbc module
(activepython).
I get a DbiDate object returned but i don't find a way to decently print
it or get a format like %d/%m%/%y.

I found a few posts but the code doesn't work.
>>> birthd = results[0][4] #info from db
>>> birthd
<DbiDate object at 0x0087E040>
>>> str(birthd)
'e\x00\x00d\x00\x00\x19d\x01\x00\x19Z\x01\x00d\x02\x00S\x00[4]\n\x00'
>>> t = time.strftime('%d %B %Y', birthd)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: argument must be 9-item sequence, not DbiDate

How can i convert this DbiDate to a string formated like '%d %B %Y'

I look at the DB API 2.0 but couldn't find the relevant info.

Thanks,
Benedict


From __peter__ at web.de  Thu Sep 21 10:16:03 2006
From: __peter__ at web.de (Peter Otten)
Date: Thu, 21 Sep 2006 16:16:03 +0200
Subject: Changing behaviour of namespaces - solved, I think
References: <mailman.404.1158839725.10491.python-list@python.org>
	<eeu1ok$iru$02$1@news.t-online.com>
	<mailman.414.1158845662.10491.python-list@python.org>
Message-ID: <eeu6o9$2qd$03$1@news.t-online.com>

Mikael Olofsson wrote:

> Peter Otten wrote:
>> To feed an arbitrary mapping object to execfile() you need to upgrade to
>> Python 2.4.
> 
> Thanks! As clear as possible. I will do that.
> 
> FYI: I think I managed to achieve what I want in Py2.3 using the
> compiler module:
> 
>     def getNamesFromAstNode(node,varSet):
>         if node.__class__ in (compiler.ast.Global,compiler.ast.Import):
>             varSet.union_update(node.names)
>         if node.__class__ in (compiler.ast.Name,):
>             varSet.add(node.name)
>         for subNode in node.getChildNodes():
>             getNamesFromAstNode(subNode,varSet)
> 
>     # Get all variable names that are referenced in the file:
>     varSet = sets.Set()
>     mainNode = compiler.parseFile(filePath)
>     getNamesFromAstNode(mainNode,varSet)
> 
>     # Define a namespace and update it:
>     ns = {}
>     for varName in varSet:
>         ns[varName] = dummyObject
> 
>     # Execute the file without NameErrors:
>     execfile(filePath,ns)
> 
> Batteries included!

Clearly more elegant than:

>>> print open(filename).read()
b = a
>>> dummy = 42
>>> names = []
>>> while 1:
...     ns = dict((n, dummy) for n in names)
...     try:
...             execfile(filename, ns)
...     except NameError, e:
...             names.append(e[0][6:-16])
...     else:
...             break
...
>>> names
['a']

:-)

Peter


From duncan.booth at invalid.invalid  Wed Sep 27 03:48:41 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 07:48:41 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
Message-ID: <Xns984B5837B9F7Aduncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

>     def EscapeSQLWild(Str) :
>         """escapes MySQL pattern wildcards in Str."""
>         Result = []
>         for Ch in str(Str) :
>             if Ch == "%" or Ch == "_" :
>                 Result.append("\\")
>             #end if
>             Result.append(Ch)
>         #end for
>         return "".join(Result)
>     #end EscapeSQLWild

That doesn't quite work. If you want to stop wildcards being interpreted as 
such in a string used as a parameter to a query, then you have to escape 
the escape character as well. In a LIKE clause, backslash percent matches a 
percent character, but double backslash matches a single backslash and 
double backslash percent matches a backslash followed by anything.

I think this version should work, (or rewrite it as a 'for' loop if you 
prefer, though I think the replace version is clearer as well as being 
between 3 and 222 times faster on the inputs I tried):

def EscapeSQLWild(s):
   s = s.replace('\\', '\\\\')
   s = s.replace('%', '\\%')
   s = s.replace('_', '\\_')
   return s



From mensanator at aol.com  Sun Sep 10 19:52:43 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 10 Sep 2006 16:52:43 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <z9ZMg.9635$bM.7954@newsread4.news.pas.earthlink.net>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
	<1157752108.456624.146270@i3g2000cwc.googlegroups.com>
	<gcsMg.9006$bM.550@newsread4.news.pas.earthlink.net>
	<z9ZMg.9635$bM.7954@newsread4.news.pas.earthlink.net>
Message-ID: <1157932363.904338.181180@p79g2000cwp.googlegroups.com>


Dennis Lee Bieber wrote:
> Guess I lied...
>
> On Sat, 09 Sep 2006 05:22:20 GMT, Dennis Lee Bieber
> <wlfraed at ix.netcom.com> declaimed the following in comp.lang.python:
>
> 	Talking to myself again, I see...
>
> <snip>
>             rs = cr.execute("""insert into invoice_1
>                             (CustNo, Title, Author, Year, Price)
>                             values (?,?,?,?,?)""",
>                         r)
>
> Whoops, r => rv, though the exceptions raised made it moot
>
>             rs = cr.execute("""insert into invoice_2
>                             (CustNo, Title, Author, Year, Price)
>                             values (?,?,?,?,?)""",
>                         r)
>
> Same comment
>
> 	Out of curiousity, I converted to using MySQL(db) as a test. As
> expected, the pre-insert validation code worked with same results (well,
> the price was declared decimal, and Python 2.4 appears to handle that as
> a Decimal("value") on return <G>)
>
> 	Now, taking out the pre-validation and type conversion, supplying
> all data as it came from the CSV file:
>
> -=-=-=-=-=-=-
> Inserting:
> ['066', '101 Ways to Start A Fight', 'some Irish gentleman', '1919',
> '19.95']
> ['032', 'A Sale of Two Titties', 'Charles Dikkens', '1855', '20.00']
> ['001', 'Olsens Standard Book of British Birds (Expurgated)"', 'Olsen',
> 'None', '99.95']
> ['066', 'Ethel the Aardvark Goes Quantity Surveying', 'None', '1975',
> '9.99']
> ['032', 'David Coperfield', 'Edmund Wells', '1955', '3.95']
> ['>68', 'Strawmen and Dorothy', '', '2006', '49.89']
> ['033', "The Emperor's Old Clothes", 'Grimm Hound', '1887', 'Priceless']
>
> Select all from Invoice_1 (CustNo is CHARACTER)
> (1L, '066', '101 Ways to Start A Fight', 'some Irish gentleman', 1919L,
> Decimal("19.95"))
> (2L, '032', 'A Sale of Two Titties', 'Charles Dikkens', 1855L,
> Decimal("20.00"))
> (3L, '001', 'Olsens Standard Book of British Birds (Expurgated)"',
> 'Olsen', 0L, Decimal("99.95"))
> (4L, '066', 'Ethel the Aardvark Goes Quantity Surveying', 'None', 1975L,
> Decimal("9.99"))
> (5L, '032', 'David Coperfield', 'Edmund Wells', 1955L, Decimal("3.95"))
> (6L, '>68', 'Strawmen and Dorothy', '', 2006L, Decimal("49.89"))
> (7L, '033', "The Emperor's Old Clothes", 'Grimm Hound', 1887L,
> Decimal("0.00"))
>
> Select all from Invoice_2 (CustNo is INTEGER)
> (1L, 66L, '101 Ways to Start A Fight', 'some Irish gentleman', 1919L,
> Decimal("19.95"))
> (2L, 32L, 'A Sale of Two Titties', 'Charles Dikkens', 1855L,
> Decimal("20.00"))
> (3L, 1L, 'Olsens Standard Book of British Birds (Expurgated)"', 'Olsen',
> 0L, Decimal("99.95"))
> (4L, 66L, 'Ethel the Aardvark Goes Quantity Surveying', 'None', 1975L,
> Decimal("9.99"))
> (5L, 32L, 'David Coperfield', 'Edmund Wells', 1955L, Decimal("3.95"))
> (6L, 0L, 'Strawmen and Dorothy', '', 2006L, Decimal("49.89"))
> (7L, 33L, "The Emperor's Old Clothes", 'Grimm Hound', 1887L,
> Decimal("0.00"))
> -=-=-=-=-=-=-
>
> 	How interesting... With MySQL/MySQLdb I did NOT get exceptions or
> error results on inserting bad numeric data supplied as character string
> format (ie, as read from the CSV). Instead, MySQL SILENTLY converted
> them to ZEROS
>
> 	A price of "Priceless" becomes Decimal("0.00").
>
> 	The Customer number of ">68" became 0L
>
>
> 	Which would one rather have to work with -- a database that copied
> invalid numerics as string literals (which, in my mind, makes it much
> easier to correct the data later, using "update .... set field = correct
> where field = invalid") or a database that silently converts them all to
> 0 values. (Of course, I now expect to have a rejoinder about "Using a
> REAL database instead of MySQL" -- but unless said person wishes to
> start making the same comments about SQLite on at least as regular a
> basis, I believe the objection itself is invalid for this example).
>
> (Apparently we have fallen afoul of this clause from the old
> O'Reilly/MySQL black/brown book: "When asked to store a value in a
> numeric column that is outside the column type's allowable range, MySQL
> clips the value to the appropriate endpoint of the range and stores the
> resulting value instead." -- seems character data "clips" to zero.
>

Are you saying that MySQL is goofy? ;-)

Based on these replies, I'm pulling back and retrenching.

As I said before, I'm not entering 500,000 records by writing
INSERT statements for each record, so reading csv files is
a more realistic test. Nevertheless, I am still convinced that
the documentation (or lack thereof) is mainly responsible for
my confusion. I was, after all, mimicing the examples given
(which still have errors).

I think an explanation of how Sqlite3 differs from SQL and
a better set of examples is still warranted.



From __peter__ at web.de  Fri Sep 22 11:29:11 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 22 Sep 2006 17:29:11 +0200
Subject: Global module variables as default parameters
References: <mailman.464.1158937836.10491.python-list@python.org>
Message-ID: <ef0vdb$u6s$03$1@news.t-online.com>

Christoph Haas wrote:

> Hi, list...
> 
> I wondered if it's possible to use global (module) variables as default
> parameters. A simple working example:
> 
> ----------------------------------------
> #!/usr/bin/python
> 
> globalvar = 123
> 
> def test(foo=globalvar):
>   print foo
> 
> test()
> ----------------------------------------
> 
> Running this script prints "123". That's what I expected.
> 
> Now I'm trying the same thing in a module context. A non-working example:
> 
> test.py
> ----------------------------------------
> #!/usr/bin/python
> 
> import TestModule
> 
> TestModule.globalvar = 123
> TestModule.def1()
> TestModule.def2()
> ----------------------------------------
> 
> TestModule.py
> ----------------------------------------
> globalvar = 0
> 
> def def1():
>   print globalvar
> 
> def def2(foo=globalvar):
>   print foo
> ----------------------------------------
> 
> Running the test.py script prints "123" and "0". So accessing the
> globalvar in def1() works. But if I try to use the global variable as a
> default parameter in def2() it uses the default "0". What is the
> difference between these two? Are there contexts of default parameters?

Yes, and that context is the function definition which is executable code,
too. Whatever the variable 'right' in a statement like

def f(left=right): ...

is bound to when the def is executed will become the default for the 'left'
argument. This should become clear when you create more than one function
with the same

>>> fs = []
>>> for i in range(3):
...     def f(i=i): print i
...     fs.append(f)
...
>>> for f in fs: f()
...
0
1
2

Use a sentinel when you don't want that behaviour:

def f(foo=None):
    if foo is None: foo = globalvar
    # ...

Peter


From fredrik at pythonware.com  Wed Sep 27 01:34:30 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 07:34:30 +0200
Subject: re.compile().split(): why it produces empty string as a first
	element   of the list
In-Reply-To: <KZCdnT686dFRlofYnZ2dnUVZ_oGdnZ2d@comcast.com>
References: <KZCdnT686dFRlofYnZ2dnUVZ_oGdnZ2d@comcast.com>
Message-ID: <efd2h6$4ui$2@sea.gmane.org>

alf wrote:

> Let's run following:
> 
>  >>> re.compile('(\[.*?\])').split('[aa]bb[11]22')
> ['', '[aa]', 'bb', '[11]', '22']
> 
> Why does it return '' as a first element of the list?

because the string starts with a separator.

</F>



From jdhunter at ace.bsd.uchicago.edu  Fri Sep 22 16:01:48 2006
From: jdhunter at ace.bsd.uchicago.edu (John Hunter)
Date: Fri, 22 Sep 2006 15:01:48 -0500
Subject: Global module variables as default parameters
References: <mailman.464.1158937836.10491.python-list@python.org>
Message-ID: <87r6y3zn4j.fsf@peds-pc311.bsd.uchicago.edu>

>>>>> "Christoph" == Christoph Haas <email at christoph-haas.de> writes:

    Christoph> Hi, list...  I wondered if it's possible to use global
    Christoph> (module) variables as default parameters. A simple
    Christoph> working example:

    Christoph> ----------------------------------------
    Christoph> #!/usr/bin/python

    Christoph> globalvar = 123

    Christoph> def test(foo=globalvar): print foo

kwargs defaults are initialized a module load time, not at function
call time.  The standard idiom is

def test(foo=None): 
    if foo is None: foo = globalvar
    print foo

JDH


From MichaelDMcDonnell at yahoo.com  Thu Sep 14 00:42:40 2006
From: MichaelDMcDonnell at yahoo.com (Michael)
Date: 13 Sep 2006 21:42:40 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <1158206913.616487.163410@b28g2000cwb.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
Message-ID: <1158208960.604307.59760@e3g2000cwe.googlegroups.com>

Thank you very much for your responses. To answer some of the
questions... Yes, I am in Python receiving a C language 0 terminated
string that was sent to my Python program in a UDP packet (which is how
I know the count). Are your responses still correct given this
clarification?

Thanks much,
MDM

John Machin wrote:
> Michael wrote:
> > Hi All,
> >
> > I've received (via UDP) a null terminated string and need to convert it
> > into a Python string. Can anyone tell me how this is done? If it helps,
> > I know the number of characters in the string.
> >
>
> I think you mean NUL, not null.
>
> What have you received it into, if it's not a Python string?
>
> You probably need/want this:
>
> if strg[-1] == "\0":
>     strg = strg[:-1]
> alternatively:
> strg = strg.rstrip("\0") # requires Python 2.2.2 or later
>
> It's possible you may be talking about a fixed length string which
> contains useful_stuff + "\0" + padding -- in that case you need
>
> strg = strg.split("\0")[0] # grab upto (but not including) the first
> NUL (if any)
>
> If you're not sure what you've got, print repr(the_input_string)
> 
> HTH,
> John



From tim.golden at viacom-outdoor.co.uk  Wed Sep 27 12:37:43 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 27 Sep 2006 17:37:43 +0100
Subject: Problem with - WMI()
In-Reply-To: <1159374098.600131.201830@i42g2000cwa.googlegroups.com>
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B4B5@vogbs009.gb.vo.local>

[kath]

| the following is code snippet I used to run plink command from Python.
| If I run plink command directly it pops out a command prompt 
| window. To make the command promot window invisible I used WMI 
| as follows. 

I'm not sure WMI is necessarily the best way to do this. You
might want to look at win32process.CreateProcess. But to
address the particular issue...

| The command runs perfect. But it throughs the error 
| following the code snipet.

| def run_command():
|    cmd="plink -v -N -batch -l username-pw password-L
| 3307:127.0.0.1:3306      dbb.mydatabase.com"
|    c = wmi.WMI ()
|    startup = c.Win32_ProcessStartup.new (ShowWindow=win32con.SW_HIDE)
|    pid, result =
| c.Win32_Process.Create(CommandLine=cmd,ProcessStartupInformati
on=startup)

| D:\...\...\library.zip\wmi.py:215:

The fact that wmi.py is in library.zip suggests that you're
running from py2exe or something similar. Might have a bearing
on the situation...

| Unhandled exception in thread started by <function run_command at
| 0x00D05130>

"... exception in thread" is almost certainly the vital bit of
that traceback, along with "wmi.pyc ... in connect"

| Traceback (most recent call last):
|   File "newfma.py", line 159, in run_command
|   File "wmi.pyc", line 975, in connect
|   File "wmi.pyc", line 220, in handle_com_error
| wmi.x_wmi: 0x800401e4 - Invalid syntax

It's almost certainly -- despite the misleading "Invalid syntax"
message -- the fact that you're running in a thread (albeit
unwittingly) and need to call pythoncom.CoInitialize () somwhere
before the c = wmi.WMI () line. That's basically because under
the covers WMI is based on COM/DCOM which needs to be instructed
how to thread.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
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From ivoras at fer.hr  Tue Sep 19 08:20:09 2006
From: ivoras at fer.hr (Ivan Voras)
Date: Tue, 19 Sep 2006 14:20:09 +0200
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <mailman.266.1158668255.10491.python-list@python.org>
References: <mailman.266.1158668255.10491.python-list@python.org>
Message-ID: <eeon9s$6n3$1@news2.carnet.hr>

Nico Grubert wrote:

> Is there anything special I have to care about or is installing Python 
> on a 64 Bit OS just as easy as installing it on a 32-Bit OS?

It is as easy. Look around, you'll probably find a pre-built binary 
package for your OS.


From edreamleo at charter.net  Tue Sep 19 13:09:40 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Tue, 19 Sep 2006 12:09:40 -0500
Subject: newlines and sax.saxutils.quoteattr
References: <JLTPg.347$2N.307@newsfe02.lga>
	<mailman.281.1158681613.10491.python-list@python.org>
Message-ID: <pvVPg.3$0N.1@newsfe06.lga>

Thanks, Fredrik, for the reference to the attribute normalization algorithm.

> I guess it's too late to fix OPML.

It's too late for OPML 1.  I'll check with Dave Winer about OPML 2.

Edward
--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From gnewsg at gmail.com  Mon Sep 18 10:43:53 2006
From: gnewsg at gmail.com (billie)
Date: 18 Sep 2006 07:43:53 -0700
Subject: Interact with system command prompt
In-Reply-To: <4n7ogmF8slojU1@uni-berlin.de>
References: <1158588506.989070.257550@m7g2000cwm.googlegroups.com>
	<4n7ogmF8slojU1@uni-berlin.de>
Message-ID: <1158590633.382840.307680@h48g2000cwc.googlegroups.com>


Diez B. Roggisch ha scritto:

> billie wrote:
>
> > Hi all. I would like to know if there's some python framework able to
> > interact with system command prompt (cmd.exe or /bin/sh, depending on
> > the system) from python.
> > I need something that supports key/path auto completion by pressing TAB
> > button and the possibility to use interactive programs like ftp, gpg or
> > even vi.
> > I would like to write a remote shell application the best featured as
> > possible and I'm wondering if Python is able to emulate the
> > functionalities of applications like telnet or ssh.
>
> Check out IPython.
>
> http://ipython.scipy.org/
>
>
> Diez

Thank you. It seems to me a powerful tool. I'll try to play with it.



From fredrik at pythonware.com  Tue Sep 26 03:28:11 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 09:28:11 +0200
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
Message-ID: <efakqb$g7$1@sea.gmane.org>

Steven D'Aprano wrote:

> Google don't define "automated query"it, and I don't think they can.

the phrases they use are well understood in the SE business.  that's 
good enough for everyone involved (including courts; see below).

> (What on earth is "meta-searching"? If you're going to use terms which
> don't have a commonly understood meaning, define what they mean.)

http://en.wikipedia.org/wiki/Metasearch_engine

> If I want to search for "foo", and I type "foo" into the Firefox search
> box, is that an automated query?

nope.  unless you're a robot.

> What if I type "gg: foo" into Konqueror's address bar, which expands to
> "http://www.google.com/search?q=foo"? Is it okay if I type the URL by hand
> myself?

nope.  unless you're a robot.

> Can I use the browser to save the search page to a local HTML file? If
> Google says no, how can they possibly hope to stop me?

what you do with the search results once you've gotten them is outside 
the scope of that clause.

> What if I type this command into my shell?
> 
> elinks --dump "http://www.google.com/search?q=foo" > output.html
> 
> What if I type
> 
> wget "http://www.google.com/search?q=foo"
> 
> into the shell? Surely that's no more automated than typing "foo"
> into Google's search box.

neither is automated, unless you're a robot.

> Where is the line I must not cross?

letting a program generate search requests based on something other than 
"human wants to find something and types some keywords into a prompt 
somewhere".

> And that, it seems to me, is what the Original Poster wanted.

the OP wanted to read keywords from a text file generated in some 
unknown fashion.  that's bot behaviour, not human behaviour.

> Of course, what I think isn't important. If Google wants to write legal
> contracts that won't stand up in court (speaking as somebody who isn't a
> lawyer and whose legal advice is worthless)

well, "here's some random guy who didn't understand the terms used in 
the contract" isn't a valid defense in court; courts are more interested 
in whether people with experience from the relevant field can reasonably 
be expected to understand the contract.  but this isn't about court 
cases, of course; it's about getting banned by Google for abusing their 
services.

</F>



From yinxianglong at gmail.com  Mon Sep 18 01:07:16 2006
From: yinxianglong at gmail.com (=?GB2312?B?0vzP6cH6?=)
Date: Mon, 18 Sep 2006 13:07:16 +0800
Subject: How to Send the Message using win32gui?
Message-ID: <977252d80609172207n1ebdeec5k879d7b3d48b03bc2@mail.gmail.com>

I want to send *LVM_SETITEMSTATE message using win32gui. But I don't know
how to *do in Python.

the *LVM_SETITEMSTATE's message format as following:*
**
**
 *LVM_SETITEMSTATE **wParam* = *(WPARAM)(int)* *i**;*
 *                                  lParam* =* (LPARAM)(LVITEM FAR *)* *
pitem**;*
**
 *i * Index of the list-view item. If this parameter is ?1, then the state
change is applied to all items. *pitem * Pointer to an *LVITEM* structure.
The *stateMask* member specifies which state bits to change, and the
*state*member contains the new values for those bits. The other
members are
ignored.
-------------- next part --------------
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From jaysherby at gmail.com  Thu Sep 28 14:25:15 2006
From: jaysherby at gmail.com (Jay)
Date: 28 Sep 2006 11:25:15 -0700
Subject: vector and particle effects
Message-ID: <1159467915.132812.291210@i3g2000cwc.googlegroups.com>

I'd like to experiment a little bit with vector graphics in python.
When I say 'vector graphics' I don't mean regular old svg-style.  I
mean vector game style as in simulation of vector beam drawn graphics.
If you still don't know what I'm talking about, see Grid Wars 2
(http://gridwars.marune.de/) or Battlezone
(http://en.wikipedia.org/wiki/Battlezone).  I'm guessing I'd just be
drawing shapes with particle effects?

Anyway, I need help choosing a module or modules to support this.
Would pygame support this or should I try pyopengl?  Or is there a
better module for this?

Any tutorials for the basics would be GREATLY appreciated.



From bignose+hates-spam at benfinney.id.au  Thu Sep 21 19:19:28 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 22 Sep 2006 09:19:28 +1000
Subject: Strange behaviour of 'is'
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
Message-ID: <87psdozu2n.fsf@benfinney.id.au>

"Fijoy George" <tofijoy at yahoo.co.in> writes:

> I am a bit perplexed by the following behaviour of the 'is' comparator

In summary: you are seeing implementation details that the language
specification explicitly allows to vary by implementation.

> My understanding was that every literal is a constructure of an
> object.  Thus, the '2.' in 'x = 2.' and the '2.' in 'x is 2.' are
> different objects.  Therefore, the comparison yields false.

There's no "thus" about it. Any implementation may use the same object
or different objects to represent any two values that are equal. This
allows different optimisations to be performed on different platforms,
without breaking the specified behaviour.

> But my understanding does not explain the result of the second
> comparison.  According to the experiment, y[0] and y[1] are the same
> object!
>
> Does anyone know an explanation for this?

The explanation is:

Two objects compare *equal* if their '__eq__' method says they are. In
practice, this means their *values* are the same.

Two objects compare *identical* if the 'id()' function says they
are. In practice, this means they are the *same object*.

The relationship between "same object" and "same value" is entirely up
to the implementation to decide, by any simple or complex criteria it
chooses, and there's nothing in the specification that requires it to
be consistent at the program level. This is, among other reasons, to
allow optimisations that don't change the language specification.

No general promise is made about the relationship between those two
comparisons. Don't use them as if they were the same operation,
because the implementation isn't restricted to meet that promise.

-- 
 \     "You know what I hate? Indian givers... no, I take that back."  |
  `\                                                    -- Emo Philips |
_o__)                                                                  |
Ben Finney



From ldo at geek-central.gen.new_zealand  Wed Sep 27 00:26:06 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 16:26:06 +1200
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.640.1159254809.10491.python-list@python.org>
Message-ID: <efcuf3$qht$2@lust.ihug.co.nz>

In message <mailman.640.1159254809.10491.python-list at python.org>, Steve
Holden wrote:

> The fact remains that Google can chop your searching ability off at the
> knees ...

No they can't. They can only chop off your ability to use Google.



From steve at REMOVEME.cybersource.com.au  Mon Sep 25 05:16:58 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Mon, 25 Sep 2006 19:16:58 +1000
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org>
	<7xy7s8crty.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2006.09.25.09.16.56.874481@REMOVEME.cybersource.com.au>

On Mon, 25 Sep 2006 00:45:29 -0700, Paul Rubin wrote:

> willie <willie at jamots.com> writes:
>> # U+270C
>> # 11100010 10011100 10001100
>> buf = "\xE2\x9C\x8C"
>> u = buf.decode('UTF-8')
>> # ... later ...
>> u.bytes() -> 3
>> 
>> (goes through each code point and calculates
>> the number of bytes that make up the character
>> according to the encoding)
> 
> Duncan Booth explains why that doesn't work.  But I don't see any big
> problem with a byte count function that lets you specify an encoding:
> 
>      u = buf.decode('UTF-8')
>      # ... later ...
>      u.bytes('UTF-8') -> 3
>      u.bytes('UCS-4') -> 4
> 
> That avoids creating a new encoded string in memory, and for some
> encodings, avoids having to scan the unicode string to add up the
> lengths.

Unless I'm misunderstanding something, your bytes code would have to
perform exactly the same algorithmic calculations as converting the
encoded string in the first place, except it doesn't need to store the
newly encoded string, merely the number of bytes of each character.

Here is a bit of pseudo-code that might do what you want:

def bytes(unistring, encoding):
    length = 0
    for c in unistring:
        length += len(c.encode(encoding))
    return length

At the cost of some speed, you can avoid storing the entire encoded string
in memory, which might be what you want if you are dealing with truly
enormous unicode strings.

Alternatively, instead of calling encode() on each character, you can
write a function (presumably in C for speed) that does the exact same
thing as encode, but without storing the encoded characters, merely adding
their lengths. Now you have code duplication, which is usually a bad idea.
If for no other reason, some poor schmuck has to maintain them both! (And
I bet it won't be Willie, for all his enthusiasm for the idea.)

This whole question seems to me like an awful example of premature
optimization. Your computer has probably got well in excess of 100MB, and
you're worried about duplicating a few hundred or thousand (or even
hundred thousand) bytes for a few milliseconds (just long enough to grab
the length)?


-- 
Steven D'Aprano 



From cfbolz at gmx.de  Mon Sep 18 14:03:44 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Mon, 18 Sep 2006 20:03:44 +0200
Subject: PyPy Sprint Announcement, Duesseldorf 30 Oct - 5 Nov
Message-ID: <450EDF80.60508@gmx.de>

Hi all!

The next PyPy sprint will be held in the Computer Science department of
Heinrich-Heine Universitaet Duesseldorf from the 30th of October to the
5th of November 2006.

Topics and goals
----------------

The topics of the sprints are not fixed yet.  We will progress on the
subjects that we are currently working on, while giving a special
priority to any topic that "non-core" people find interesting.  There
are many topics that could fit both category :-)  Here are some
examples:

* Just-In-Time work.  Two sub-topics:

  - write and/or optimize a machine-code backend (we have 386 only so
    far)
  - work on turning simple interpreters into JIT compilers (we cannot do
    this for the whole of the PyPy interpreter yet, we're getting there
    small step by small step).

* Optimization of core Python data types, making full
  use of PyPy's flexible architecture and python-implemented (and then
  translated) type system.  (We have already various dict and str
  implementations.)

* "Next-step stuff" that will requires some thinking and design:

  - distribution (where a single program runs on multiple machines)
  - persistence (save an "image" of a running program, or a part of it)
  - security (in many possible senses of the word)

* Working on py.test testing tool:

  - py.test recently grew some distribution features which are still
    rough around the edges and could use improvement

  - there are some more ideas for features of py.test around, like
    adding profiling capabilities (and more)

* Work on the PyPy build tool: There are some plans to provide a tool
  that allows one to flexibly configure PyPy and to also request builds
  from a set of build servers. If there is interest there could be work
  in this area.

* and as always, there is the topic of implementing or completing core
  extension modules (e.g. socket...).  This is hacking with a mix of
  ctypes and RPython.


Location
--------

The sprint will (probably) take place in a seminar room of the geography
department (which is getting assimilated by the cs department and is
below it).  It is in the building 25.12 of the university campus. For
travel instructions see

    http://stups.cs.uni-duesseldorf.de/anreise/esbahn.php

Registration
------------

If you'd like to come, please subscribe to the `pypy-sprint mailing
list`_ and drop a note about your interests and post any questions.
More organisational information will be send to that list.  We'll keep a
list of `people`_ which we'll update (which you can do so yourself if
you have codespeak commit rights).

.. _`pypy-sprint mailing list`:
http://codespeak.net/mailman/listinfo/pypy-sprint
.. _`people`:
http://codespeak.net/pypy/extradoc/sprintinfo/ddorf2006b/people.html



Cheers,

Carl Friedrich Bolz & the PyPy team





From fccoelho at gmail.com  Tue Sep 26 14:58:13 2006
From: fccoelho at gmail.com (Flavio)
Date: 26 Sep 2006 11:58:13 -0700
Subject: f2py on windows tutorials
In-Reply-To: <mailman.504.1159044688.10491.python-list@python.org>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
	<mailman.504.1159044688.10491.python-list@python.org>
Message-ID: <1159297093.543871.108100@h48g2000cwc.googlegroups.com>

Its been a while since i Tried this and right now I have no access to a
windows
machine to try it and show you the error messages I was getting.

I was using the latest version of Python Enthouhgt edition. But I was
trying to compile the fortran code directly with f2py.

What I would like to have is a setup.py tailored to compile an f2py
extension on windows. Have you got one of these? if so please send it
to me and I can certainly figure out the rest.

thanks,

Flavio

Robert Kern wrote:
> Flavio wrote:
> > Hello,
> >
> > Compiling f2py extensions in Linux is a trivial task, You can even
> > automate it with distutils. Now, in a Windows machine this does not
> > seem to be an easy task. At least, I could not find any decent tutorial
> > on how to do it.
> >
> > Is there a  way to do this? Can some one point me to a tutorial.,
> > please?
> >
> > I have tried some approaches: mingw, xmingw (cross-compiling from
> > Linux) and Python enthought edition (which is supposed to come
> > preconfigured to enable people to use Scipy tools, such as f2py)
> > Withouth success.
> >
> > Anyone out there knows how to do this? Anyone from the Scipy dev team
> > care to document it?
>
> <shrug> It's worked fine for me using Enthon (which comes with mingw and g77,
> things you will need at minimum).
>
> What versions of Enthon and f2py are you using?
> What exactly did you try?
> What errors are you seeing?
> How are you trying to compile your modules, i.e. with just the f2py command or
> are you building a setup.py file?
> Did you pass "--compiler=mingw --fcompiler=gnu" to your build command?
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From whelanws at eircom.net  Thu Sep 14 18:40:40 2006
From: whelanws at eircom.net (Willie Whelan)
Date: Thu, 14 Sep 2006 23:40:40 +0100
Subject: Way off Question - VATSIM - query
Message-ID: <4509DA68.4000609@eircom.net>

Hi,

I know this is a way off question, but does anyone have any info on
querying a vatsim server. www.vatsim.net. I would just like to query a
server to see what clients are connected.

Thanks

Willie


From qual at tiscali.de  Mon Sep 11 16:42:44 2006
From: qual at tiscali.de (Uwe Hoffmann)
Date: Mon, 11 Sep 2006 22:42:44 +0200
Subject: Running python from a usb drive
In-Reply-To: <mailman.290.1158007035.5279.python-list@python.org>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
Message-ID: <ee4hjf$2ett$1@ulysses.news.tiscali.de>

Steve Holden schrieb:
> Uwe Hoffmann wrote:
> 
>> cjl schrieb:
>>
>>
>>>
>>> I do set pythonpath, see above.
>>>
>>
>> is pythonpath really case insensitive on windows ?
> 
> 
> Only because the Windows filesystem implements case-insensitive 
> semantics. This is nothing to do with Python:

no, i mean't the name not the content. Is the handling of the
env variable pythonpath case insensitive: pythonpath <--> PYTHONPATH.

regards
	uwe


From chris at simplistix.co.uk  Mon Sep 11 04:46:06 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 09:46:06 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <lO8Ng.102992$_J1.824396@twister2.libero.it>
References: <mailman.239.1157955783.5279.python-list@python.org>
	<lO8Ng.102992$_J1.824396@twister2.libero.it>
Message-ID: <4505224E.6070000@simplistix.co.uk>

Manlio Perillo wrote:
> Try with:
> 
> msg = MIMEText(
>      u'Some text with chars that need encoding: \xa3',
>      _charset='utf-8',
>      )
> 
> 
> and you will obtain the error:
> 
> Traceback (most recent call last):
>   File "<pyshell#4>", line 3, in -toplevel-
>     _charset='utf-8',
>   File "C:\Python2.4\lib\email\MIMEText.py", line 28, in __init__
>     self.set_payload(_text, _charset)
>   File "C:\Python2.4\lib\email\Message.py", line 218, in set_payload
>     self.set_charset(charset)
>   File "C:\Python2.4\lib\email\Message.py", line 260, in set_charset
>     self._payload = charset.body_encode(self._payload)
>   File "C:\Python2.4\lib\email\Charset.py", line 366, in body_encode
>     return email.base64MIME.body_encode(s)
>   File "C:\Python2.4\lib\email\base64MIME.py", line 136, in encode
>     enc = b2a_base64(s[i:i + max_unencoded])
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in
> position 41: ordinal not in range(128)

OK, but I fail to see how replacing one unicode error with another is 
any help... :-S

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From fredrik at pythonware.com  Mon Sep 25 09:16:06 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 15:16:06 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
Message-ID: <ef8kqn$lne$1@sea.gmane.org>

Jon Ribbens wrote:

>> since it doesn't deal with encodings at all.
>
> Why does it need to? cgi.escape is (or should be) dealing with
> character strings, not byte sequences. I must admit,
> internationalisation is not my forte, so if there's something
> I'm missing here I'd love to hear about it.

If you're really serious about making things easier to use, shouldn't
you look at the whole picture?  HTML documents are byte streams, so
any transformation from internal character data to HTML must take both
escaping and encoding into account.  If you and Lawrence have a hard
time remembering how to use the existing cgi.escape function, despite
it's utter simplicity, surely it would make your life even easier if
there was an alternative API that would handle both the easy part
(escaping) and the hard part (encoding) ?

> By the way, if you could try and put across your proposed arguments as
> to why you don't favour this suggested change without the insults and
> general rudeness, it would be appreciated.

I've already explained that, but since you're convinced that your use
case is more important than other use cases, and you don't care about
things like stability and respect for existing users of an API, nor
the cost for others to update their code and unit tests, I don't see
much need to repeat myself.  Breaking things just because you think
you can simply isn't the Python way of doing things.

</F> 





From http  Thu Sep  7 22:08:26 2006
From: http (Paul Rubin)
Date: 07 Sep 2006 19:08:26 -0700
Subject: Secure Postgres access
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
	<pan.2006.09.08.01.11.22.368386@umn.edu>
	<7xvenzt9zz.fsf@ruckus.brouhaha.com>
Message-ID: <7xwt8fw1np.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> You'd use SCM_CREDENTIALS to
> authenticate the user ID, then send the Postgres client's originating
> TCP port number over the Unix socket, and that would tell the SSH
> client that it could then start forwarding the TCP packets.  Yucch,
> this is messy.  Maybe something like it exists already somewhere.

Actually maybe this can still be spoofed, e.g. perhaps someone can
jump into someone else's existing TCP connection on the local machine
through the TAP interface.  It might be ok, but you or some TCP wizard
better first think about it carefully.  I'm not expert enough about
socket programming to know.  You'd think there's a solution.


From gslindstrom at gmail.com  Wed Sep  6 08:04:04 2006
From: gslindstrom at gmail.com (gslindstrom at gmail.com)
Date: 6 Sep 2006 05:04:04 -0700
Subject: IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <1157544244.497402.47000@d34g2000cwd.googlegroups.com>

Jim Hugunin wrote:
> I'm extremely happy to announce that we have released IronPython 1.0 today!
>  http://www.codeplex.com/IronPython

Way to go, Jim!! I am impressed with the effort.
--greg



From mario.lacunza at gmail.com  Sat Sep  9 09:50:07 2006
From: mario.lacunza at gmail.com (Mario Lacunza)
Date: Sat, 09 Sep 2006 08:50:07 -0500
Subject: [Fwd: Problems with PyGridTableBase]
Message-ID: <1157809808.5021.8.camel@localhost>

--------- Mensaje reenviado --------
De: Mario Lacunza <mario.lacunza at gmail.com>
Para: Lista Python Ing <python-list at python.org>
Asunto: Problems with PyGridTableBase
Fecha: Sat, 09 Sep 2006 00:03:20 -0500

Hello,

I attach two files:frmClientes and frmClientesNE.

frmClientes charge a Grid with resume Costumers data: Name, Commercial
ID, address, etc. and edition options.

frmClientes in 

Line 178
def OnBtnNuevoButton(self, event):

call to frmClientesNE. Its append a new record to the database and clear
all controls and when I close it, the grid in frmClientes: grClte must
be recharge with the new data, but that dont work. Only work when a
Delete some record.

I couldnt send yours a runable .py version, because both of them files
pickup data from a Firebird's database. 

I try to implement the wxPython Demo model: Grid_MegaExample, follow
that my class Grilla must be:

Line 224:
class Grilla(Grid.Grid):

but for the Boa Constructors controls creation I couldnt inherit from
Grid.Grid, thats my problem, I need your help I try for two days and
nothing :-( ... some ideas??

Thanks in advance!!

======================================================================
FILE: FRMCLIENTES.PY
======================================================================

# -*- coding: utf8 -*-#
#Boa:Frame:frmClientes

__version__='0.5'
__autor__='Mario Lacunza Vasquez <mlacunza at gmail.com>'

import wx
import wx.grid
import modGlobals
from Conectar import Conectar
import errores

def create(parent):
    return frmClientes(parent)

[wxID_FRMCLIENTES, wxID_FRMCLIENTESBRNSALIR, wxID_FRMCLIENTESBTNBORRAR, 
 wxID_FRMCLIENTESBTNEDIT, wxID_FRMCLIENTESBTNNUEVO,
wxID_FRMCLIENTESGRCLTE, 
 wxID_FRMCLIENTESLBLTITULO, wxID_FRMCLIENTESPANEL1, 
] = [wx.NewId() for _init_ctrls in range(8)]

class frmClientes(wx.Frame):
    def _init_coll_fsGrid_Growables(self, parent):
        # generated method, don't edit

        parent.AddGrowableRow(0)

    def _init_coll_fsGrid_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.grClte, 0, border=2, flag=wx.EXPAND |
wx.ALL)

    def _init_coll_fsBtn_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.btnNuevo, 0, border=2, flag=wx.EXPAND |
wx.ALL)
        parent.AddWindow(self.btnEdit, 0, border=2, flag=wx.EXPAND |
wx.ALL)
        parent.AddWindow(self.btnBorrar, 0, border=2, flag=wx.EXPAND |
wx.ALL)
        parent.AddWindow(self.brnSalir, 0, border=2, flag=wx.EXPAND |
wx.ALL)

    def _init_coll_fsTit_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.lblTitulo, 0, border=6, flag=wx.EXPAND)

    def _init_coll_bsClte_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.panel1, 1, border=0, flag=wx.EXPAND)

    def _init_coll_fsTit_Growables(self, parent):
        # generated method, don't edit

        parent.AddGrowableRow(0)

    def _init_coll_fsClte_Growables(self, parent):
        # generated method, don't edit

        parent.AddGrowableRow(0)
        parent.AddGrowableRow(1)
        parent.AddGrowableRow(2)
        parent.AddGrowableCol(0)

    def _init_coll_fsClte_Items(self, parent):
        # generated method, don't edit

        parent.AddSizer(self.fsTit, 1, border=5,
              flag=wx.ALIGN_CENTER_HORIZONTAL)
        parent.AddSizer(self.fsGrid, 1, border=10,
              flag=wx.ALIGN_CENTER_HORIZONTAL)
        parent.AddSizer(self.fsBtn, 1, border=5,
              flag=wx.ALIGN_CENTER_HORIZONTAL)

    def _init_sizers(self):
        # generated method, don't edit
        self.bsClte = wx.BoxSizer(orient=wx.VERTICAL)

        self.fsClte = wx.FlexGridSizer(cols=1, hgap=0, rows=0, vgap=0)

        self.fsTit = wx.FlexGridSizer(cols=1, hgap=0, rows=0, vgap=0)

        self.fsGrid = wx.FlexGridSizer(cols=1, hgap=5, rows=0, vgap=5)

        self.fsBtn = wx.FlexGridSizer(cols=4, hgap=0, rows=0, vgap=0)

        self._init_coll_bsClte_Items(self.bsClte)
        self._init_coll_fsClte_Growables(self.fsClte)
        self._init_coll_fsClte_Items(self.fsClte)
        self._init_coll_fsTit_Growables(self.fsTit)
        self._init_coll_fsTit_Items(self.fsTit)
        self._init_coll_fsGrid_Growables(self.fsGrid)
        self._init_coll_fsGrid_Items(self.fsGrid)
        self._init_coll_fsBtn_Items(self.fsBtn)

        self.SetSizer(self.bsClte)
        self.panel1.SetSizer(self.fsClte)

    def _init_ctrls(self, prnt):
        # generated method, don't edit
        wx.Frame.__init__(self, id=wxID_FRMCLIENTES,
name=u'frmClientes',
              parent=prnt, pos=wx.Point(352, 148), size=wx.Size(589,
514),
              style=wx.DEFAULT_FRAME_STYLE, title=u'Clientes')
        self.SetClientSize(wx.Size(589, 514))

        self.panel1 = wx.Panel(id=wxID_FRMCLIENTESPANEL1, name='panel1',
              parent=self, pos=wx.Point(0, 0), size=wx.Size(589, 514),
              style=wx.TAB_TRAVERSAL)

        self.lblTitulo = wx.StaticText(id=wxID_FRMCLIENTESLBLTITULO,
label=u'',
              name=u'lblTitulo', parent=self.panel1, pos=wx.Point(258,
0),
              size=wx.Size(72, 19), style=0)
        self.lblTitulo.Center(wx.HORIZONTAL)
        self.lblTitulo.SetFont(wx.Font(12, wx.SWISS, wx.NORMAL, wx.BOLD,
False,
              u'Sans'))

        self.grClte = wx.grid.Grid(id=wxID_FRMCLIENTESGRCLTE,
name=u'grClte',
              parent=self.panel1, pos=wx.Point(10, 63),
size=wx.Size(568, 326),
              style=0)
        self.grClte.EnableEditing(False)
        self.grClte.Bind(wx.grid.EVT_GRID_SELECT_CELL,
              self.OnGrClteGridSelectCell)

        self.btnNuevo = wx.Button(id=wxID_FRMCLIENTESBTNNUEVO,
label=u'Nuevo',
              name=u'btnNuevo', parent=self.panel1, pos=wx.Point(118,
435),
              size=wx.Size(85, 34), style=0)
        self.btnNuevo.SetToolTipString(u'Nuevo Cliente')
        self.btnNuevo.Bind(wx.EVT_BUTTON, self.OnBtnNuevoButton,
              id=wxID_FRMCLIENTESBTNNUEVO)

        self.btnEdit = wx.Button(id=wxID_FRMCLIENTESBTNEDIT,
label=u'Editar',
              name=u'btnEdit', parent=self.panel1, pos=wx.Point(207,
435),
              size=wx.Size(85, 34), style=0)
        self.btnEdit.SetToolTipString(u'Editar Cliente')
        self.btnEdit.Bind(wx.EVT_BUTTON, self.OnBtnEditButton,
              id=wxID_FRMCLIENTESBTNEDIT)

        self.btnBorrar = wx.Button(id=wxID_FRMCLIENTESBTNBORRAR,
              label=u'Eliminar', name=u'btnBorrar', parent=self.panel1,
              pos=wx.Point(296, 435), size=wx.Size(85, 34), style=0)
        self.btnBorrar.SetToolTipString(u'Eliminar Cliente')
        self.btnBorrar.Bind(wx.EVT_BUTTON, self.OnBtnBorrarButton,
              id=wxID_FRMCLIENTESBTNBORRAR)

        self.brnSalir = wx.Button(id=wxID_FRMCLIENTESBRNSALIR,
label=u'Salir',
              name=u'brnSalir', parent=self.panel1, pos=wx.Point(385,
435),
              size=wx.Size(85, 34), style=0)
        self.brnSalir.SetToolTipString(u'Salir')
        self.brnSalir.Bind(wx.EVT_BUTTON, self.OnBrnSalirButton,
              id=wxID_FRMCLIENTESBRNSALIR)

        self._init_sizers()

    def __init__(self, parent):
        self._init_ctrls(parent)
        
        self.CrearGrid()
        
#-------------------------------------------------------------------------------
    def CrearGrid(self):
        #Setea la Tabla para el Grid
        self.table = Tabla()
        self.grClte.SetTable(self.table, True)
        
        #Setea el ancho de las columnas del Grid
        self.grClte.SetColSize(0,50)
        self.grClte.SetColSize(2,150)
        self.grClte.SetColSize(4,250)
        
#-------------------------------------------------------------------------------
    
    def OnBtnNuevoButton(self, event):
        #Nuevo
        import frmClientesNE
        x=frmClientesNE.create(None,"N")
        x.Show()

    def OnBtnEditButton(self, event):
        #Editar
        import frmClientesNE
        x=frmClientesNE.create(None,"E",self.Valor)
        x.Show()

    def OnBtnBorrarButton(self, event):
        self.oD=D_Cltes()
        
        dlg=wx.MessageDialog(self,u'?Est? seguro de eliminar este
Cliente?', \
        'PymeGestor',wx.YES_NO | wx.ICON_QUESTION)
        rpta=dlg.ShowModal()
        if (rpta==wx.ID_YES):
            self.oD.Borrar(self.Valor)
            dlg2=wx.MessageDialog(self,u'El Cliente fue el eliminado con
?xito.', \
            'PymeGestor',wx.OK | wx.ICON_INFORMATION)
            dlg2.ShowModal()
            dlg2.Destroy()
        else:
            pass
        
        dlg.Destroy()

    def OnBrnSalirButton(self, event):
        self.Close(True)

    def OnGrClteGridSelectCell(self, event):
        #Obtiene el valor de la celda seleccionada.
        self.R=event.GetRow()
        #Fija como 0 la celda q contiene el campo ID.
        self.C = 0
        
        self.Valor=self.table.GetValue(self.R,self.C)
        
        event.Skip()


#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
class Tabla(wx.grid.PyGridTableBase):
    """Clase que maneja la grilla de Datos."""
    
    def __init__(self):
        wx.grid.PyGridTableBase.__init__(self)
        
        self.oCltes=D_Cltes()
        self.data=self.oCltes.CargarClientes()
        
        #Setea el Numero de Columnas a mostrar por el SQL
        self.Columnas=7
        
        #Setea los titulos del Grid
        self.colLabels = ["ID", "CODIGO", "CLIENTE", "NRO.DOC.",
"DIRECCION", "TELEFONO","EMAIL"]
        
    def GetNumberRows(self):
        r=len(self.data)
        return r

    def GetNumberCols(self):
        return self.Columnas

    def IsEmptyCell(self, row, col):
        return False

    def GetValue(self, row, col):
        #Muestra los datos devueltos por el Recordset
        value=self.data[row][col]
        if value is not None:
            return value
        else:
            return ''

    def SetValue(self, row, col, value):
        try:            
            self.data[row][col] = value
        except IndexError:
            # add a new row
            self.data.append([''] * self.GetNumberCols())
            self.SetValue(row, col, value)
            # tell the grid we've added a row
            msg = wxGridTableMessage(self,            # The table
                    wxGRIDTABLE_NOTIFY_ROWS_APPENDED, # what we did to
it
                    1                                       # how many
                    )
            self.GetView().ProcessTableMessage(msg)

    def GetColLabelValue(self, col):
        return self.colLabels[col]
    
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------

class O_Cltes:
    """Clase de Negocios para el manejo de los Clientes."""
    def __init__(self):
        """ Constructor."""


#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------

class D_Cltes:
    """Maneja las operaciones con clientes."""
    
    mCodigo=None
    mNombre=None
    mTipoDoc=None
    mNumDoc=None
    mDireccion=None
    mPostal=None
    mFono1=None
    mFono2=None
    mFax=None
    mEmail=None
    mCelular=None
    mWeb=None
    mLinCredito=None
    
    def __init__(self):
        """ Constructor."""
        
        #Instancia la Clase
        self.cnn=Conectar()
      
        #Obtiene cadena de Conexion
        self.cnn.__class__.cnn=modGlobals.CNN
    
#-------------------------------------------------------------------------------
    
    def CargarClientes(self):
        """Genera lista de Clientes."""
        
        sql="Select ID, Codigo, Nombre, NumDoc, Direccion, Fono1, Email
from tblClientes"
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL()
            return rs
        
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
#-------------------------------------------------------------------------------
    def Borrar(self, mCod):
        """Borra Cliente de la Bd."""
        
        sql="Delete from tblClientes Where ID=%d"%(mCod)
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL('Delete')
            return True
        
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
#-------------------------------------------------------------------------------

    def CargaTDoc(self):
        
        sql="Select ID, Detalle from tblTipoDoc"
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL()
            return rs
        
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
        
#-------------------------------------------------------------------------------

    def Graba(self):
        """Graba los datos."""
        
        #Obtiene el codigo
        self.__class__.mCodigo=self.GeneraCod()
        
        sql="Insert into tblClientes(ID, CODIGO, NOMBRE, TIPODOC,
NUMDOC, DIRECCION, POSTAL,\
        FONO1,FONO2,FAX, EMAIL, CELULAR, WEB, LINCREDITO)\
        VALUES(GEN_ID(GEN_TBLCLIENTES_ID,1),\
        '%s', '%s', %d, '%s', '%s','%s','%s','%s','%s','%s','%s','%s',%
d)"\
        %(self.__class__.mCodigo, self.__class__.mNombre,
self.__class__.mTipoDoc, self.__class__.mNumDoc,\
        self.__class__.mDireccion, self.__class__.mPostal,
self.__class__.mFono1,\
        self.__class__.mFono2, self.__class__.mFax,
self.__class__.mEmail,\
        self.__class__.mCelular, self.__class__.mWeb,
self.__class__.mLinCredito)
        
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL('Insert')
            if rs==False:
                return False
            else:
                return True
        
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
        
        self.CargarClientes()
#-------------------------------------------------------------------------------
    
    def GeneraCod(self):
        """Genera el Codigo Unico para este cliente."""
        
        sql="Select MAX(Codigo) from tblClientes"
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL()
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
        
        #Si es el primer registro en la Tabla
        if rs[0][0]==None:
            cod=modGlobals.CrearCodigo('', 'C',9)
        else:
            cod=modGlobals.CrearCodigo(rs[0][0],'C', 9)
            
        return cod
        
#-------------------------------------------------------------------------------

    def Edita(self, mCod):
        """Edita los datos."""
        
        sql="Update Where ID=%d" %(mCod)
        
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL('Update')
            if rs==False:
                return False
            else:
                return True

        
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
        
#-------------------------------------------------------------------------------
    def BuscarClte(self,mCod):
        
        sql="Select * From tblClientes Where ID=%d" %(mCod)
        
        self.cnn.__class__.SQL=sql
        
        try:
            rs=self.cnn.EjecutarSQL()
            return rs
        except errores.ConexionError, err:
            print "Error:",err.mensaje
        except errores.ConexionEjecucionError, err:
            print "Error:",err.msgEjec
    

======================================================================
======================================================================
======================================================================


======================================================================
FILE: FRMCLIENTESNE.PY
======================================================================

# -*- coding: utf8 -*-#
#Boa:Frame:Frame1

import wx
import modGlobals
from Conectar import Conectar
import errores
from frmClientes import D_Cltes

def create(parent, mTipo, mCodClte=''):
    return Frame1(parent, mTipo, mCodClte)

[wxID_FRAME1, wxID_FRAME1BTNOK, wxID_FRAME1BTNSALIR,
wxID_FRAME1CBOTIPODOC, 
 wxID_FRAME1LBLCEL, wxID_FRAME1LBLCOD, wxID_FRAME1LBLCODIGO,
wxID_FRAME1LBLCP, 
 wxID_FRAME1LBLCTE, wxID_FRAME1LBLDIREC, wxID_FRAME1LBLEMAIL, 
 wxID_FRAME1LBLF1, wxID_FRAME1LBLF2, wxID_FRAME1LBLFAX,
wxID_FRAME1LBLLIN, 
 wxID_FRAME1LBLNUM, wxID_FRAME1LBLTD, wxID_FRAME1LBLWEB,
wxID_FRAME1PANEL1, 
 wxID_FRAME1TXTCELU, wxID_FRAME1TXTCLTE, wxID_FRAME1TXTDIREC, 
 wxID_FRAME1TXTEMAIL, wxID_FRAME1TXTFAX, wxID_FRAME1TXTFONO1, 
 wxID_FRAME1TXTFONO2, wxID_FRAME1TXTLINCRE, wxID_FRAME1TXTNUMDOC, 
 wxID_FRAME1TXTPOSTAL, wxID_FRAME1TXTWEB, 
] = [wx.NewId() for _init_ctrls in range(30)]

class Frame1(wx.Frame):
    TipoOper=None
    CodClte=None
    
    def _init_coll_fsClte_Growables(self, parent):
        # generated method, don't edit

        parent.AddGrowableRow(0)
        parent.AddGrowableRow(1)
        parent.AddGrowableCol(0)

    def _init_coll_fsCtrls_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.lblCod, 0, border=5, flag=0)
        parent.AddWindow(self.lblCodigo, 0, border=5, flag=0)
        parent.AddWindow(self.lblCte, 0, border=5, flag=0)
        parent.AddWindow(self.txtClte, 0, border=5, flag=0)
        parent.AddWindow(self.lblTD, 0, border=5, flag=0)
        parent.AddWindow(self.cboTipoDoc, 0, border=5, flag=0)
        parent.AddWindow(self.lblNum, 0, border=5, flag=0)
        parent.AddWindow(self.txtNumDoc, 0, border=5, flag=0)
        parent.AddWindow(self.lblDirec, 0, border=5, flag=0)
        parent.AddWindow(self.txtDirec, 0, border=5, flag=0)
        parent.AddWindow(self.lblCP, 0, border=5, flag=0)
        parent.AddWindow(self.txtPostal, 0, border=5, flag=0)
        parent.AddWindow(self.lblF1, 0, border=5, flag=0)
        parent.AddWindow(self.txtFono1, 0, border=5, flag=0)
        parent.AddWindow(self.lblF2, 0, border=5, flag=0)
        parent.AddWindow(self.txtFono2, 0, border=5, flag=0)
        parent.AddWindow(self.lblFax, 0, border=5, flag=0)
        parent.AddWindow(self.txtFax, 0, border=5, flag=0)
        parent.AddWindow(self.lblEmail, 0, border=5, flag=0)
        parent.AddWindow(self.txtEmail, 0, border=5, flag=0)
        parent.AddWindow(self.lblWeb, 0, border=5, flag=0)
        parent.AddWindow(self.txtWeb, 0, border=5, flag=0)
        parent.AddWindow(self.lblCel, 0, border=5, flag=0)
        parent.AddWindow(self.txtCelu, 0, border=5, flag=0)
        parent.AddWindow(self.lblLin, 0, border=5, flag=0)
        parent.AddWindow(self.txtLinCre, 0, border=5, flag=0)

    def _init_coll_fsClte_Items(self, parent):
        # generated method, don't edit

        parent.AddSizer(self.fsCtrls, 1, border=5,
              flag=wx.ALIGN_CENTER_HORIZONTAL)
        parent.AddSizer(self.fsBtn, 1, border=5,
              flag=wx.ALIGN_CENTER_HORIZONTAL)

    def _init_coll_fsBtn_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.btnOk, 0, border=5, flag=wx.ALL |
wx.EXPAND)
        parent.AddWindow(self.btnSalir, 0, border=5, flag=wx.ALL |
wx.EXPAND)

    def _init_coll_bsClte_Items(self, parent):
        # generated method, don't edit

        parent.AddWindow(self.panel1, 0, border=0, flag=wx.EXPAND)

    def _init_sizers(self):
        # generated method, don't edit
        self.bsClte = wx.BoxSizer(orient=wx.VERTICAL)

        self.fsClte = wx.FlexGridSizer(cols=0, hgap=0, rows=2, vgap=0)

        self.fsCtrls = wx.FlexGridSizer(cols=2, hgap=1, rows=0, vgap=2)

        self.fsBtn = wx.FlexGridSizer(cols=2, hgap=0, rows=0, vgap=0)

        self._init_coll_bsClte_Items(self.bsClte)
        self._init_coll_fsClte_Items(self.fsClte)
        self._init_coll_fsClte_Growables(self.fsClte)
        self._init_coll_fsCtrls_Items(self.fsCtrls)
        self._init_coll_fsBtn_Items(self.fsBtn)

        self.SetSizer(self.bsClte)
        self.panel1.SetSizer(self.fsClte)

    def _init_ctrls(self, prnt):
        # generated method, don't edit
        wx.Frame.__init__(self, id=wxID_FRAME1, name='', parent=prnt,
              pos=wx.Point(629, 243), size=wx.Size(263, 353),
              style=wx.DEFAULT_FRAME_STYLE, title=u'Clientes')
        self.SetClientSize(wx.Size(263, 353))

        self.panel1 = wx.Panel(id=wxID_FRAME1PANEL1, name='panel1',
parent=self,
              pos=wx.Point(0, 0), size=wx.Size(263, 348),
              style=wx.TAB_TRAVERSAL)

        self.lblCte = wx.StaticText(id=wxID_FRAME1LBLCTE,
label=u'Cliente',
              name=u'lblCte', parent=self.panel1, pos=wx.Point(4, 14),
              size=wx.Size(35, 12), style=0)

        self.txtClte = wx.TextCtrl(id=wxID_FRAME1TXTCLTE,
name=u'txtClte',
              parent=self.panel1, pos=wx.Point(58, 14),
size=wx.Size(200, 22),
              style=0, value=u'')
        self.txtClte.SetToolTipString(u'Nombre o Raz\xf3n Social')

        self.lblTD = wx.StaticText(id=wxID_FRAME1LBLTD, label=u'Tipo
Doc.',
              name=u'lblTD', parent=self.panel1, pos=wx.Point(4, 38),
              size=wx.Size(45, 12), style=0)

        self.cboTipoDoc = wx.ComboBox(choices=[],
id=wxID_FRAME1CBOTIPODOC,
              name=u'cboTipoDoc', parent=self.panel1, pos=wx.Point(58,
38),
              size=wx.Size(198, 24), style=0, value=u'')
        self.cboTipoDoc.SetLabel(u'')
        self.cboTipoDoc.Bind(wx.EVT_COMBOBOX, self.OnCboTipoDocCombobox,
              id=wxID_FRAME1CBOTIPODOC)

        self.lblNum = wx.StaticText(id=wxID_FRAME1LBLNUM, label=u'N
\xfamero',
              name=u'lblNum', parent=self.panel1, pos=wx.Point(4, 64),
              size=wx.Size(38, 12), style=0)

        self.txtNumDoc = wx.TextCtrl(id=wxID_FRAME1TXTNUMDOC,
name=u'txtNumDoc',
              parent=self.panel1, pos=wx.Point(58, 64), size=wx.Size(80,
22),
              style=0, value=u'')
        self.txtNumDoc.SetToolTipString(u'N\xfamero de Documento')

        self.lblDirec = wx.StaticText(id=wxID_FRAME1LBLDIREC,
              label=u'Direcci\xf3n', name=u'lblDirec',
parent=self.panel1,
              pos=wx.Point(4, 88), size=wx.Size(47, 12), style=0)

        self.txtDirec = wx.TextCtrl(id=wxID_FRAME1TXTDIREC,
name=u'txtDirec',
              parent=self.panel1, pos=wx.Point(58, 88),
size=wx.Size(200, 22),
              style=0, value=u'')
        self.txtDirec.SetToolTipString(u'Direcci\xf3n')

        self.lblCP = wx.StaticText(id=wxID_FRAME1LBLCP,
label=u'Cod.Postal',
              name=u'lblCP', parent=self.panel1, pos=wx.Point(4, 112),
              size=wx.Size(52, 12), style=0)

        self.txtPostal = wx.TextCtrl(id=wxID_FRAME1TXTPOSTAL,
name=u'txtPostal',
              parent=self.panel1, pos=wx.Point(58, 112),
size=wx.Size(80, 24),
              style=0, value=u'')
        self.txtPostal.SetToolTipString(u'C\xf3digo Postal')

        self.lblF1 = wx.StaticText(id=wxID_FRAME1LBLF1, label=u'Tel
\xe9fono',
              name=u'lblF1', parent=self.panel1, pos=wx.Point(4, 138),
              size=wx.Size(39, 12), style=0)

        self.txtFono1 = wx.TextCtrl(id=wxID_FRAME1TXTFONO1,
name=u'txtFono1',
              parent=self.panel1, pos=wx.Point(58, 138),
size=wx.Size(80, 22),
              style=0, value=u'')

        self.lblF2 = wx.StaticText(id=wxID_FRAME1LBLF2, label=u'Tel
\xe9fono',
              name=u'lblF2', parent=self.panel1, pos=wx.Point(4, 162),
              size=wx.Size(39, 12), style=0)

        self.txtFono2 = wx.TextCtrl(id=wxID_FRAME1TXTFONO2,
name=u'txtFono2',
              parent=self.panel1, pos=wx.Point(58, 162),
size=wx.Size(80, 22),
              style=0, value=u'')

        self.lblFax = wx.StaticText(id=wxID_FRAME1LBLFAX, label=u'Fax',
              name=u'lblFax', parent=self.panel1, pos=wx.Point(4, 186),
              size=wx.Size(16, 12), style=0)

        self.txtFax = wx.TextCtrl(id=wxID_FRAME1TXTFAX, name=u'txtFax',
              parent=self.panel1, pos=wx.Point(58, 186),
size=wx.Size(80, 22),
              style=0, value=u'')

        self.lblEmail = wx.StaticText(id=wxID_FRAME1LBLEMAIL,
label=u'Email',
              name=u'lblEmail', parent=self.panel1, pos=wx.Point(4,
210),
              size=wx.Size(27, 12), style=0)

        self.txtEmail = wx.TextCtrl(id=wxID_FRAME1TXTEMAIL,
name=u'txtEmail',
              parent=self.panel1, pos=wx.Point(58, 210),
size=wx.Size(192, 22),
              style=0, value=u'@')

        self.lblWeb = wx.StaticText(id=wxID_FRAME1LBLWEB,
label=u'Website',
              name=u'lblWeb', parent=self.panel1, pos=wx.Point(4, 234),
              size=wx.Size(36, 12), style=0)

        self.txtWeb = wx.TextCtrl(id=wxID_FRAME1TXTWEB, name=u'txtWeb',
              parent=self.panel1, pos=wx.Point(58, 234),
size=wx.Size(192, 22),
              style=0, value=u'http://')

        self.lblCel = wx.StaticText(id=wxID_FRAME1LBLCEL,
label=u'Celular',
              name=u'lblCel', parent=self.panel1, pos=wx.Point(4, 258),
              size=wx.Size(35, 12), style=0)

        self.txtCelu = wx.TextCtrl(id=wxID_FRAME1TXTCELU,
name=u'txtCelu',
              parent=self.panel1, pos=wx.Point(58, 258),
size=wx.Size(80, 22),
              style=0, value=u'9')

        self.lblLin = wx.StaticText(id=wxID_FRAME1LBLLIN,
              label=u'Lin.Cr\xe9dito', name=u'lblLin',
parent=self.panel1,
              pos=wx.Point(4, 282), size=wx.Size(53, 12), style=0)

        self.txtLinCre = wx.TextCtrl(id=wxID_FRAME1TXTLINCRE,
name=u'txtLinCre',
              parent=self.panel1, pos=wx.Point(58, 282),
size=wx.Size(80, 22),
              style=0, value=u'0')
        self.txtLinCre.SetToolTipString(u'Linea de Cr\xe9dito')

        self.btnOk = wx.Button(id=wxID_FRAME1BTNOK, label=u'Aceptar',
              name=u'btnOk', parent=self.panel1, pos=wx.Point(41, 309),
              size=wx.Size(85, 34), style=0)
        self.btnOk.SetToolTipString(u'Acepta cambios')
        self.btnOk.Bind(wx.EVT_BUTTON, self.OnBtnOkButton,
id=wxID_FRAME1BTNOK)

        self.btnSalir = wx.Button(id=wxID_FRAME1BTNSALIR,
label=u'Salir',
              name=u'btnSalir', parent=self.panel1, pos=wx.Point(136,
309),
              size=wx.Size(85, 34), style=0)
        self.btnSalir.SetToolTipString(u'Salir')
        self.btnSalir.Bind(wx.EVT_BUTTON, self.OnBtnSalirButton,
              id=wxID_FRAME1BTNSALIR)

        self.lblCod = wx.StaticText(id=wxID_FRAME1LBLCOD, label=u'C
\xf3digo',
              name=u'lblCod', parent=self.panel1, pos=wx.Point(4, 0),
              size=wx.Size(34, 12), style=0)

        self.lblCodigo = wx.StaticText(id=wxID_FRAME1LBLCODIGO,
label=u'',
              name=u'lblCodigo', parent=self.panel1, pos=wx.Point(58,
0),
              size=wx.Size(150, 12), style=0)
        self.lblCodigo.SetToolTipString(u'C\xf3digo Cliente')
        self.lblCodigo.SetAutoLayout(False)

        self._init_sizers()

    def __init__(self, parent, mTipo, mCodClte):
        self._init_ctrls(parent)
        
        self.__class__.TipoOper=mTipo
        self.__class__.CodClte=mCodClte
        
        
        #Setea tama?os minimos
        self.fsClte.Fit(self)
        self.fsClte.SetSizeHints(self)
        
        self.oClte=D_Cltes()
        
        #Estableve el Encoding
        self.encode='utf8'
        
        self.CargarCombo()
        self.CargaForm()
        
#-------------------------------------------------------------------------------
    
    def CargaForm(self):
        
        if self.__class__.TipoOper=="E":
            self.dat=self.oClte.BuscarClte(self.__class__.CodClte)
            self.CargarCtrls()
        
#-------------------------------------------------------------------------------
    
    def CargarCtrls(self):   
        
        self.lblCodigo.SetLabel(self.dat[0][1])
        self.txtClte.SetValue(self.dat[0][2])
        self.cboTipoDoc.SetSelection(self.dat[0][3]-1)
        self.txtNumDoc.SetValue(self.dat[0][4])
        self.txtDirec.SetValue(self.dat[0][5])
        self.txtPostal.SetValue(self.dat[0][6])
        self.txtFono1.SetValue(self.dat[0][7])
        self.txtFono2.SetValue(self.dat[0][8])
        self.txtFax.SetValue(self.dat[0][9])
        self.txtEmail.SetValue(self.dat[0][10])
        self.txtCelu.SetValue(self.dat[0][11])
        self.txtWeb.SetValue(self.dat[0][12])
        self.txtLinCre.SetValue(str(self.dat[0][13]))
        
#-------------------------------------------------------------------------------
    def CargarCombo(self):        
        
        rs=self.oClte.CargaTDoc()
        
        self.cboTipoDoc.Clear()
        
        i=0
        
        for it in rs:
            x=unicode(rs[i][1],self.encode)
            self.cboTipoDoc.Append(x,rs[i][0])
            i+=1
            
        if self.__class__.TipoOper=="N":
            #Vacia el 1er elemento mostrado para q el user se vea
obligado a escoger
            self.cboTipoDoc.SetValue('')
        elif self.__class__.TipoOper=="E":
            #Pinta el registro seleccionado
            pass
        
#-------------------------------------------------------------------------------
    def ObtieneValores(self):
        self.oClte.__class__.mNombre=self.txtClte.GetValue()
        self.oClte.__class__.mTipoDoc=int(self.kTipoDoc)
        self.oClte.__class__.mNumDoc=self.txtNumDoc.GetValue()
        self.oClte.__class__.mDireccion=self.txtDirec.GetValue()
        self.oClte.__class__.mPostal=self.txtPostal.GetValue()
        self.oClte.__class__.mFono1=self.txtFono1.GetValue()
        self.oClte.__class__.mFono2=self.txtFono2.GetValue()
        self.oClte.__class__.mFax=self.txtFax.GetValue()
        self.oClte.__class__.mEmail=self.txtEmail.GetValue()
        self.oClte.__class__.mCelular=self.txtCelu.GetValue()
        self.oClte.__class__.mWeb=self.txtWeb.GetValue()
        self.oClte.__class__.mLinCredito=int(self.txtLinCre.GetValue())
        
#-------------------------------------------------------------------------------
    
    def BorrarCtrls(self):
        self.txtClte.Clear()
        self.txtNumDoc.Clear()
        self.txtDirec.Clear()
        self.cboTipoDoc.Clear()
        self.txtPostal.Clear()
        self.txtFono1.Clear()
        self.txtFono2.Clear()
        self.txtFax.Clear()
        self.txtEmail.Clear()
        self.txtCelu.Clear()
        self.txtWeb.Clear()
        self.txtLinCre.Clear()
        
#-------------------------------------------------------------------------------
    
    def OnBtnOkButton(self, event):
        
        self.ObtieneValores()
        
        if self.__class__.TipoOper=="N":
            if self.oClte.Graba()==True:
                dlg=wx.MessageDialog(self,u'Se ingres? el nuevo
Cliente.', \
                'PymeGestor',wx.OK | wx.ICON_EXCLAMATION)
                dlg.ShowModal()
                dlg.Destroy()
                self.BorrarCtrls()
                self.txtClte.SetFocus()
                
            else:
                dlg=wx.MessageDialog(self,u'Hubo un error al ingresar
los datos.\
                Corrija y vuelva a intentarlo.','PymeGestor',wx.OK |
wx.ICON_ERROR)
                dlg.ShowModal()
                dlg.Destroy()
                self.txtClte.SetFocus()
            
        elif self.__class__.TipoOper=="E":
            self.oClte.Edita()
        else:
            pass
        
#-------------------------------------------------------------------------------

    def OnBtnSalirButton(self, event):
        self.Close(True)
        
#-------------------------------------------------------------------------------

    def OnCboTipoDocCombobox(self, event):
        cb = event.GetEventObject()
        #Obtengo el Key
        self.kTipoDoc = cb.GetClientData(cb.GetSelection())
        
#-------------------------------------------------------------------------------

=============================================================================
=============================================================================

-- 
Mario Lacunza <mario.lacunza at gmail.com>



From bdesth.quelquechose at free.quelquepart.fr  Sat Sep  9 14:51:29 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 09 Sep 2006 20:51:29 +0200
Subject: newbie: datastructure `dictionary' question
In-Reply-To: <pan.2006.09.09.15.15.13.48103@notmal.com>
References: <pan.2006.09.09.15.15.13.48103@notmal.com>
Message-ID: <45030a1c$0$8492$626a54ce@news.free.fr>

jason a ?crit :

Just some more suggestions:

> def parselog(data):
>     other = 0
>     records = {}
> 
>     for line in string.split(data, '\n'):
       for line in data.split('\n'):
>         str = line.strip()
This will shadow the builtin 'str' type. You could reassign to 'line' 
instead, or manage to get stripped lines already:
       for line in map(str.strip, data.split('\n'):

>         if str[:4] == 'From':
>             mfrom, datum = extrfrom(str), extrdate(str)
>             print datum, mfrom

Mixing processing with IO may not be a good idea...

>         elif str[:4] == 'Fold':

           line_type = line[:4]
           if line_type == 'From':
              # code here
           elif line_type ==  'Fold':
>             folder = extrfolder(str[8:])
>             records = {folder : { 'date' : datum, 'mesgbytes' : extrmsize(str[8:]), 'mesgcount' : 1}}
You now know that it should be:
               records[folder] = {...}


>         else:
>             other += 1
> 
>     displrec(records)
> 

As a last note, you may want to pay more attention to your namings... 
ie, 'display_records()' is much more readable than 'displrec()' and 
still not to long to type !-)

My 2 cents (and a half)


From jaysherby at gmail.com  Fri Sep 29 01:57:20 2006
From: jaysherby at gmail.com (Jay)
Date: 28 Sep 2006 22:57:20 -0700
Subject: vector and particle effects
In-Reply-To: <1159467154.884505.131680@b28g2000cwb.googlegroups.com>
References: <1159467154.884505.131680@b28g2000cwb.googlegroups.com>
Message-ID: <1159509440.170889.18480@e3g2000cwe.googlegroups.com>

Sorry for the double post.  Google groups was being stubborn.
Jay wrote:
> I'd like to experiment a little bit with vector graphics in python.
> When I say 'vector graphics' I don't mean regular old svg-style.  I
> mean vector game style as in simulation of vector beam drawn graphics.
> If you still don't know what I'm talking about, see Grid Wars 2
> (http://gridwars.marune.de/) or Battlezone
> (http://en.wikipedia.org/wiki/Battlezone).
>
> Anyway, I need help choosing a module or modules to support this.
> Would pygame support this or should I try pyopengl?  Or is there a
> better module for this?
> 
> Any tutorials for the basics would be GREATLY appreciated.



From cooldudevamsee at gmail.com  Tue Sep 12 08:37:54 2006
From: cooldudevamsee at gmail.com (cooldudevamsee at gmail.com)
Date: 12 Sep 2006 05:37:54 -0700
Subject: Clarify Regex in Python.
In-Reply-To: <mailman.341.1158063739.5279.python-list@python.org>
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
	<mailman.341.1158063739.5279.python-list@python.org>
Message-ID: <1158064674.441245.165610@d34g2000cwd.googlegroups.com>

> Erm, is there some specific reason why you can't just use the search
> method? Why does it *have* to be match()?
>
> regards
>   Steve


I know there r many more methods to do the job, I just wonder can we
turnoff the default behaviour of match method.

Thanks.



From paddy3118 at netscape.net  Wed Sep 13 00:47:01 2006
From: paddy3118 at netscape.net (Paddy)
Date: 12 Sep 2006 21:47:01 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
	<1158104598.658388.241640@d34g2000cwd.googlegroups.com>
	<1158109531.828274.53810@i42g2000cwa.googlegroups.com>
	<mailman.409.1158113683.5279.python-list@python.org>
Message-ID: <1158122821.868320.215770@e3g2000cwe.googlegroups.com>

Cliff Wells wrote:
> On Tue, 2006-09-12 at 18:05 -0700, Robert Hicks wrote:
> > metaperl wrote:
> > > Istvan Albert wrote:
> > > > metaperl wrote:
> > > > > -->  python -i
> > > > > >>> class = "algebra"
> > > > >   File "<stdin>", line 1
> > > > >     class = "algebra"
> > > > >           ^
> > > > > SyntaxError: invalid syntax
> > > >
> > > > Designing a syntax to avoid all possible newbie errors is impractical
> > > > because as soon as you are finished with one iteration the new newbies
> > > > will start making different kinds of errors...
> > >
> > > You are missing the point: the point is that the above could be
> > > considered correct if the rules of Python were that an assignment
> > > statement takes
> > > IDENTIFIER '=' LVALUE
> > >
> > > Also  "class" IDENTIFIER COLON could also be considered correct.
> > >
> >
> > Yes it could but it isn't and isn't likely to be. Simply do not use
> > reserved words. That rule is hardly limited to Python.
>
> I'm surprised so many people misunderstand his complaint.  It isn't as
> simple as "don't do it".  The OP is referring to autogenerated code and
> attributes.  This means you must tell the source of the generated items
> (perhaps a database table) that it can't have a column named "class" or
> "pass" or add hacks in to work around it (an easy one would be to prefix
> autogenerated attributes, which also helps work around the lack of
> private attributes in Python).
>
> Whether or not this should be changed is tangential to the OP's point.
> It must be a bit frustrating to state the obvious over and over and see
> it misinterpreted each time.  Python has shortcomings.  This is one of
> them, whether there's valid reasons for it or not.  It's better to
> acknowledge it and offer something useful rather than "that isn't the
> Python way, don't do it."
>
>
> Cliff
>
> --
Hi Cliff, You would also not be allowed to have a column name with a
space,comma,*,;,... in them. It might be best to assume that column
headings might end up with any arbitrary unicode character string and
program from that.
If the OP knows the full extent of his input data and knows that column
names are valid identifiers PLUS Python reserved words then yes, It
stops him from autogenerating identifiers in tht way - but others in
this thread have suggested work-arounds.

And yes, Python is not perfect, but its sweet spot is oh so tasty :-)

(Which also applies to AWK, for a different sweet flavour)

- Paddy.



From 4daniel at gmail.com  Sat Sep  2 15:52:58 2006
From: 4daniel at gmail.com (Daniel)
Date: 2 Sep 2006 12:52:58 -0700
Subject: Libraries in python
References: <1157176049.124197.249310@h48g2000cwc.googlegroups.com>
Message-ID: <1157226778.513403.183620@p79g2000cwp.googlegroups.com>

eduardo.rosa at gmail.com wrote:
> Hy people, I'm new in python and comming from JAVA.
>
> Something I really like in java is the easy way to add a library to the
> project. Just put the jar file in the folder ( WEB-INF/lib ) and
> doesn't need to restart the server ( tomcat ).
>
> Can I do some like using python - I'm using apache mod_python?

I know exactly what you mean because I had the same question when I
came to Python from Java. What you're looking for is Python "eggs".
Unfortunately, they're a fairly new addition to the Python ecosystem
and they're not as nice/simple to use as jars. Here are a few of their
shortcomings:

1. not nearly all of the libraries that you may want to use are
distributed as eggs, so you may need to package them yourself, which
can be a pain. To be fair, this is not a shortcoming of eggs directly,
but rather a disadvantage of new technology--it's not ubiquitous yet.

2. you have to put them in the source root directory of the project so
they can be imported in all packages in the project. This seems to
clutter things up for me, and I'd rather have a project-local lib
directory in which to put them (I know that's possible with sys.path
hacks, but that's a hack, this should be standardized).

3. eggs only work well for python-only packages. In other words if the
library includes platform-specific binaries or other non-python-code
files then the egg must be unpacked for it to work. I really hate this
one because it means all those unpackaged files must be checked into
source control rather than just a single library archive file.

4. the seemingly "standard" place to deploy eggs is in the global
site-packages directory of your Python installation. That's terrible
because it makes it a pain to use different versions of a given package
in different projects. Yes, you can use the "setuptools.requires()"
function, but I want to deploy my apps without requiring those who
install it to download lots of dependencies to get it running (not to
mention I just want to use Python's standard "import", not some
non-standard "requires()" function). And yes, I know "requires()" is
supposed to automatically handle the dependencies too, but that just
seems too error prone because it makes too many assumptions about
resource availablitiy... all I want to do is bundle the library when I
deploy (preferably in the form of a single file).

That's my $0.02 on Python packaging and library dependencies. In my
opinion it's one of the few things that Java got right that Python
didn't.

~ Daniel



From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 06:23:38 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 12:23:38 +0200
Subject: concat next line with previous
References: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>
Message-ID: <slrnehhvta.miv.sybrenUSE@schuimige.stuvel.eu>

s99999999s2003 at yahoo.com enlightened us with:
> hi
> what is the python way to concat 2 lines eg

concated = line1 + line2

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From wenshengwang at gmail.com  Fri Sep  8 17:24:48 2006
From: wenshengwang at gmail.com (Wensheng)
Date: 8 Sep 2006 14:24:48 -0700
Subject: egg and modpython
Message-ID: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>

I installed pysqlite2 using easy_install.
and got this when using it from modpython:
--------------------------------------------------------------------------------------------------
Mod_python error: "PythonHandler etc.modpython"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line
299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.4/site-packages/spark/proj/etc/modpython.py",
line 21, in handler
    return ReqModPython(req).run()

  File "/usr/lib/python2.4/site-packages/spark/ReqBase.py", line 141,
in run
    con_mod = __import__(conf,'','',[''])

  File "/var/www/hello/controllers/wiki_controller.py", line 6, in ?
    Storm.conn(driver='sqlite',db="/var/www/hello/etc/sparkdemo.db")

  File "/usr/lib/python2.4/site-packages/spark/storm.py", line 64, in
conn
    cls.__CONN = __import__('db'+driver).DbSpark(**kwds)

  File "/usr/lib/python2.4/site-packages/spark/dbsqlite.py", line 7, in
?
    try: from pysqlite2 import dbapi2 as sqlite

  File "build/bdist.linux-i686/egg/pysqlite2/dbapi2.py", line 27, in ?

  File "build/bdist.linux-i686/egg/pysqlite2/_sqlite.py", line 7, in ?

  File "build/bdist.linux-i686/egg/pysqlite2/_sqlite.py", line 4, in
__bootstrap__

  File
"/usr/lib/python2.4/site-packages/setuptools-0.6c2-py2.4.egg/pkg_resources.py",
line 799, in resource_filename
    return get_provider(package_or_requirement).get_resource_filename(

  File
"/usr/lib/python2.4/site-packages/setuptools-0.6c2-py2.4.egg/pkg_resources.py",
line 1229, in get_resource_filename
    return self._extract_resource(manager, zip_path)

  File
"/usr/lib/python2.4/site-packages/setuptools-0.6c2-py2.4.egg/pkg_resources.py",
line 1249, in _extract_resource
    real_path = manager.get_cache_path(

  File
"/usr/lib/python2.4/site-packages/setuptools-0.6c2-py2.4.egg/pkg_resources.py",
line 880, in get_cache_path
    self.extraction_error()

  File
"/usr/lib/python2.4/site-packages/setuptools-0.6c2-py2.4.egg/pkg_resources.py",
line 846, in extraction_error
    raise err

ExtractionError: Can't extract file(s) to egg cache

The following error occurred while trying to extract file(s) to the
Python egg
cache:

  [Errno 13] Permission denied: '/var/www/.python-eggs'

The Python egg cache directory is currently set to:

  /var/www/.python-eggs

Perhaps your account does not have write access to this directory?  You
can
change the cache directory by setting the PYTHON_EGG_CACHE environment
variable to point to an accessible directory.
----------------------------------------------------------------------------

Can peak developers fix this please?


I know I won't have this problem with python 2.5 because it has
sqlite3, but this affect other eggs too!
Here's similiar occurance, I can't reply it since it's too old.
http://groups.google.com/group/comp.lang.python/browse_thread/thread/d35e5264a6b491d5/cee519cb5557ad0e

in the mean time, I just have to use old "download, unzip/untar &&
python setup.py install" way.

Thanks



From simonwittber at gmail.com  Tue Sep 12 09:27:17 2006
From: simonwittber at gmail.com (Simon Wittber)
Date: 12 Sep 2006 06:27:17 -0700
Subject: Help me use my Dual Core CPU!
In-Reply-To: <mailman.348.1158066516.5279.python-list@python.org>
References: <mailman.348.1158066516.5279.python-list@python.org>
Message-ID: <1158067637.693157.189070@m73g2000cwd.googlegroups.com>

Tim Golden wrote:
> + Pyro - http://pyro.sf.net
> + Corba - eg omniorb http://omniorb.sourceforge.net/
> + SPyRO - http://lsc.fie.umich.mx/~sadit/spyro/spyro.html
> + mmap - (built-in module) http://docs.python.org/lib/module-mmap.html
> + twisted - (because it can do everything), esp.
> http://twistedmatrix.com/projects/core/spread
> + Spread - http://www.spread.org/
> + Roll-your-own sockets -
> http://docs.python.org/lib/module-SocketServer.html

For game programming purposes, I was hoping someone could point me to a
technique for sharing objects across Python processes, preferably
without any kind of marshal/unmarshal steps. It's a long shot, I know.
To be viable, I'll need to be able to pass messages between processes
very quickly. For example, It would be simple to paralellize some
graphics calculations over two processors with each process sharing a
common read-only scene data structure; however, a marshalling step in
this kind of process would be too costly.

I've used three of the libraries you mention, however, they are not
very usable for the task I had in mind, but are of course excellent for
other server based programming tasks.

> But I have the feeling I'm teaching my grandmother... Is that
> the kind of thing you were after? Or not?

I'm not familiar with the expression 'teaching my grandmother'. What
exactly does it mean?

-Sw.



From bj_666 at gmx.net  Mon Sep 11 03:01:35 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Mon, 11 Sep 2006 09:01:35 +0200
Subject: PyPy with a smaller PVM for the full Python?
References: <t5o9g2t5n39inanhl43d1pbnphvpsvfg7a@4ax.com>
Message-ID: <pan.2006.09.11.07.01.34.256792@gmx.net>

In <t5o9g2t5n39inanhl43d1pbnphvpsvfg7a at 4ax.com>, Casey Hawthorne wrote:

> Similarly, for JPython (which is at Python 2.2?), could one also use a
> lot smaller accompanying PVM with the JPython source code and JVM to
> use Python 2.5 in its entirety?

Could you define "small"?  I think the PVM is already quite small.

Ciao,
	Marc 'BlackJack' Rintsch


From bearophileHUGS at lycos.com  Fri Sep 22 20:52:54 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 22 Sep 2006 17:52:54 -0700
Subject: Doctests for nested functions
Message-ID: <1158972773.947401.326850@i42g2000cwa.googlegroups.com>

Recently I have posted this same question on it.comp.lang.python, maybe
there aren't solutions, but I'd like to know what you think.

Can doctests be added to nested functions too? (This can be useful to
me, I use nested function when I don't have attributes that I have to
remember, but I want to split the logic in some subparts anyway).
Example:

def foo():
  """
  >>> foo()
  21
  """
  def bar():
    """
    >>> bar()
    11
    """
    print 10
  print 20
import doctest
doctest.testmod()

Bye,
bearophile



From sbellon at sbellon.de  Wed Sep 20 08:59:36 2006
From: sbellon at sbellon.de (Stefan Bellon)
Date: Wed, 20 Sep 2006 14:59:36 +0200
Subject: Embedding Python and command history
In-Reply-To: <20060920120853.5c63db89@cube.tz.axivion.com>
References: <20060920120853.5c63db89@cube.tz.axivion.com>
Message-ID: <20060920145936.0f8e83b0@cube.tz.axivion.com>

Stefan Bellon wrote:

> int main(void)
> {
>   Py_Initialize();
>   PyRun_InteractiveLoop(stdin, "<stdin>");
>   Py_Finalize();
> }

> How can I make use of command history when embedded Python via
> PyRun_InteractiveLoop?

Sorry to follow up my own posting ...

I found that when I do "import readline" in this simple example, I have
a working command history. When I do this in my real application, then
I get the following:

>>> import readline
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: /usr/lib/python2.4/lib-dynload/readline.so: undefined
symbol: PyExc_IOError

Still experimenting what exactly is causing this.

This application is not linked against libpython. But it loads a shared
object at run time which is linked against libpython and which
contains the call to PyRun_InteractiveLoop. But it looks like this
"plugin" is not enough to make the symbols known to Python. If I add
-lpython2.4 to the linker command when building the main application,
then it works. But this is somewhat against what I was planning to
achieve when using a plugin: independence of the main application from
Python.

Hm.

-- 
Stefan Bellon


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 11:48:12 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 17:48:12 +0200
Subject: Does Python provide "Struct" data structure?
References: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>
Message-ID: <4nietsFahdftU1@individual.net>

Daniel Mark wrote:

> I have two following questions:
> 
> 1> Does Python provide such Struct in this standard libary.
> Python has "4.3 struct -- Interpret strings as packed binary
> data", but it looks like different from what I really want to get.

Yes, that module is used when you want to deal with C structs in
binary form (e.g. useful at networking with binary protocols).
 
Try using dictionaries or custom, field-only class instances
as "struct".

Regards,


Bj?rn

-- 
BOFH excuse #374:

It's the InterNIC's fault.



From uid09012_ti at martin-collins.de  Fri Sep  8 07:14:25 2006
From: uid09012_ti at martin-collins.de (Francach)
Date: 8 Sep 2006 04:14:25 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <1157677111.804469.61660@p79g2000cwp.googlegroups.com>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
Message-ID: <1157714065.936490.178790@i3g2000cwc.googlegroups.com>

Hi,

thanks for the helpful reply.
I wanted to do two things - learn to use Beautiful Soup and bring out
all the information
in the bookmarks file to import into another application. So I need to
be able to travel down the tree in the bookmarks file. bookmarks seems
to use header tags which can then contain a tags where the href
attributes are. What I don't understand is how to create objects which
can then be used to return the information in the next level of the
tree.

Thanks again,
Martin.



George Sakkis wrote:
> Francach wrote:
> > Hi,
> >
> > I'm trying to use the Beautiful Soup package to parse through the
> > "bookmarks.html" file which Firefox exports all your bookmarks into.
> > I've been struggling with the documentation trying to figure out how to
> > extract all the urls. Has anybody got a couple of longer examples using
> > Beautiful Soup I could play around with?
> >
> > Thanks,
> > Martin.
>
> from BeautifulSoup import BeautifulSoup
> urls = [tag['href'] for tag in
>         BeautifulSoup(open('bookmarks.html')).findAll('a')]
> 
> Regards,
> George



From franz.steinhaeusler at gmx.at  Mon Sep 18 07:05:13 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Mon, 18 Sep 2006 13:05:13 +0200 (CEST)
Subject: PythonCAD question
Message-ID: <eeluh9$2tp$1@newsreader2.utanet.at>

Hello NG,

I tried to run PythonCad on window and
got follwoing traceback:

Traceback (most recent call last):
  File "C:\temp\PythonCAD-DS1-R34\PythonCad.py", line 45, in ?
    import PythonCAD.Interface.Cocoa.ImageDocument
  File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\ImageDocument.py", l
ine 38, in ?
    import PythonCAD.Interface.Cocoa.Globals
  File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\Globals.py", line 23
, in ?
    from Foundation import NSObject
ImportError: No module named Foundation

* Waht is the module "Foundation"?

Where can I get it?

Many thanks in advance!

-- 
Franz Steinhaeusler



From diffuser78 at gmail.com  Thu Sep 14 22:33:04 2006
From: diffuser78 at gmail.com (diffuser78 at gmail.com)
Date: 14 Sep 2006 19:33:04 -0700
Subject: matplotlib
In-Reply-To: <20060915015210.7B5F.0.NOFFLE@fiedzia.homeip.net>
References: <1158282047.089110.284140@h48g2000cwc.googlegroups.com>
	<20060915015210.7B5F.0.NOFFLE@fiedzia.homeip.net>
Message-ID: <1158287584.727929.148040@i3g2000cwc.googlegroups.com>

This site and webpage in particular doesn't open. I tried that too
before posting my question.

Maciej Dziardziel wrote:
> diffuser78 at gmail.com wrote:
>
> > Can somebody give some quick pointers to start off with matplotlib.
> >
> > Thanks
>
> http://matplotlib.sourceforge.net/tutorial.html
>
> --
> Maciej "Fiedzia" Dziardziel (maciejdziardziel at poczta.wp.pl)
> 
> If you can read this, you are in phaser range.



From jwaixs at gmail.com  Fri Sep  1 14:01:29 2006
From: jwaixs at gmail.com (jwaixs)
Date: 1 Sep 2006 11:01:29 -0700
Subject: disgrating a list
In-Reply-To: <4lr9ssF39q4lU2@uni-berlin.de>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<4lr9ssF39q4lU2@uni-berlin.de>
Message-ID: <1157133689.234692.3680@p79g2000cwp.googlegroups.com>


Diez B. Roggisch wrote:
> Why do you wrap a in a list? Just
>
> c = a + [b]
>
> will do it.

Yes I know, but the problem is I don't know if 'a' is a list or not. I
could make a type check, but I don't want to program in that way.

Noud



From fredrik at pythonware.com  Tue Sep 26 09:32:07 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 15:32:07 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><Xns984996E6BABCEduncanbooth@127.0.0.1><slrnehfogu.6tm.jon+usenet@snowy.squish.net><Xns98499CF9DCEE4duncanbooth@127.0.0.1><slrnehfr5g.6tm.jon+usenet@snowy.squish.net><mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
Message-ID: <efba4o$dfq$1@sea.gmane.org>

Jon Ribbens wrote:

>> does the word "information set" mean anything to you?
>
> You would appear to be talking about either game theory, or XML,
> neither of which have anything to do with HTML.

you see no connection between XML's concept of information set and
HTML?   (hint: what's XHTML?)

</F> 





From george.sakkis at gmail.com  Tue Sep 26 15:48:06 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 12:48:06 -0700
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
	<slrnehipsi.ds.horpner@FIAD06.norwich.edu>
	<1159293503.138171.312280@k70g2000cwa.googlegroups.com>
	<mailman.725.1159297476.10491.python-list@python.org>
Message-ID: <1159300086.799578.28770@d34g2000cwd.googlegroups.com>

Steve Holden wrote:

> George Sakkis wrote:
> > Neil Cerutti wrote:
> >
> >
> >>On 2006-09-26, Neal Becker <ndbecker2 at gmail.com> wrote:
> >>
> >>>Any suggestions for transforming the sequence:
> >>>
> >>>[1, 2, 3, 4...]
> >>>Where 1,2,3.. are it the ith item in an arbitrary sequence
> >>>
> >>>into a succession of tuples:
> >>>
> >>>[(1, 2), (3, 4)...]
> >>>
> >>>In other words, given a seq and an integer that specifies the
> >>>size of tuple to return, then for example:
> >>
> >>It turns out there's a itertools recipe to do this; the last one
> >>in the itertools recipe book:
> >>
> >>def grouper(n, iterable, padvalue=None):
> >>    """
> >>    grouper(3, 'abcdefg', 'x') --> ('a','b','c'), ('d','e','f'), ('g','x','x')
> >>
> >>    """
> >>    return izip(*[chain(iterable, repeat(padvalue, n-1))]*n)
> >
> >
> > That's not quite the same as the previous suggestions; if the last
> > tuple is shorter than n, it pads the last tuple with padvalue. The OP
> > didn't mention if he wants that or he'd rather have a shorter last
> > tuple.
> >
> In which case why not go in for a bit of requirements gold-plating and
> add a keyword Boolean argument that allows you to specify which
> behaviour you want.

Ok, I'll bite. Here's an overgeneralized, itertools-infested
conglomerate of all the suggestions so far. Season to taste:

from itertools import islice,izip,chain,repeat,takewhile,count

def iterwindows(iterable, n=2, mode='keep', padvalue=None):
    it = iter(iterable)
    if mode == 'keep':
        return takewhile(bool, (tuple(islice(it,n)) for _ in count()))
    elif mode == 'drop':
        return izip(*[it]*n)
    elif mode == 'pad':
    	return izip(*[chain(it,repeat(padvalue,n-1))]*n)
    else:
    	raise ValueError('Unknown mode: %r' % mode)

>>> list(iterwindows('abcdefgh',3))
[('a', 'b', 'c'), ('d', 'e', 'f'), ('g', 'h')]
>>> list(iterwindows('abcdefgh',3,mode='drop'))
[('a', 'b', 'c'), ('d', 'e', 'f')]
list(iterwindows('abcdefgh',3,mode='pad'))
[('a', 'b', 'c'), ('d', 'e', 'f'), ('g', 'h', None)]


George



From gagsl-py at yahoo.com.ar  Thu Sep 21 06:49:55 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 07:49:55 -0300
Subject: Can I inherit member variables?
In-Reply-To: <1158834871.215969.126140@i42g2000cwa.googlegroups.com>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<eetnu9$gj7$1@online.de>
	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060921074110.053cf828@yahoo.com.ar>

At Thursday 21/9/2006 07:34, LorcanM wrote:

>I think there's a basic misunderstanding about the nature of
>inheritance on my side.
>
>What I want to do is instantiate the sub class (derived class) from
>within the animal class. I then expect the sub class to have inherited
>some basic properties that it knows it has (weight, colour). If I can
>expand the example I gave previously to try to make this a little
>clearer:

As an analogy: a certain animal, a given individual, is of a kind 
"from birth". You don't have an abstract, unshaped, animal, that by 
some kind of magic later becomes a bird, or a mammal...
When you construct an object instance, it is of a certain type from 
that precise moment, and you can't change that afterwards.
So, you construct a bird, which is a kind of animal (class 
inheritance is the way of modelling that "is a kind of" relationship).

Hope it becomes clearer now.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From ziga.seilnacht at gmail.com  Wed Sep 20 16:13:23 2006
From: ziga.seilnacht at gmail.com (Ziga Seilnacht)
Date: 20 Sep 2006 13:13:23 -0700
Subject: Leaks in subprocess.Popen
References: <1158772027.221441.244710@k70g2000cwa.googlegroups.com>
Message-ID: <1158783202.935737.55750@d34g2000cwd.googlegroups.com>

zloster wrote:
> I'm using Python 2.4.3 for Win32.
> I was trying to run a few child processes simultaneously in separate
> threads and get their STDOUT, but the program was leaking memory and I
> found that it was because of subprocess operating in another thread.
> The following code works fine, but I get a leaking handle every second.
> You can see it in the task manager if you choose to see the <handle
> count> column. Does anybody have a solution? Please help!
>

This bug is fixed in the 2.5 version of Python and will be fixed in the
next 2.4 maintainance release (2.4.4). See:
http://www.python.org/sf/1500293 for the bug report.

You can find the relevant changes here:
http://mail.python.org/pipermail/python-checkins/2006-June/053417.html
http://mail.python.org/pipermail/python-checkins/2006-June/053418.html

If you have Python Win32 Extensions installed you can try using that
instead of the extension in the standard library; you have to change a
single line in the subprocess module:

--- subprocess_modified.py	2006-09-20 22:04:29.734375000 +0200
+++ subprocess.py	2006-09-20 22:01:52.296875000 +0200
@@ -350,7 +350,7 @@
 if mswindows:
     import threading
     import msvcrt
-    if 0: # <-- change this to use pywin32 instead of the _subprocess
driver
+    if 1: # <-- change this to use pywin32 instead of the _subprocess
driver
         import pywintypes
         from win32api import GetStdHandle, STD_INPUT_HANDLE, \
                              STD_OUTPUT_HANDLE, STD_ERROR_HANDLE



Hope this helps,
Ziga



From rNOSPAMon at flownet.com  Tue Sep 12 01:38:43 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Mon, 11 Sep 2006 22:38:43 -0700
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
	<mailman.306.1158021619.5279.python-list@python.org>
	<3qoNg.820$5i7.307@newsreading01.news.tds.net>
Message-ID: <rNOSPAMon-C3CBCE.22384311092006@news.gha.chartermi.net>

In article <3qoNg.820$5i7.307 at newsreading01.news.tds.net>,
 Kent Johnson <kent at kentsjohnson.com> wrote:

> Steve Holden wrote:
> > Ron Garret wrote:
> >> In article <mailman.294.1158010161.5279.python-list at python.org>,
> >>  Steve Holden <steve at holdenweb.com> wrote:
> >>
> >>
> >>> But basically, you aren't providing a CGI environment, and that's why 
> >>> cgi.parse() isn't working.
> >>
> >> Clearly.  So what should I be doing?  Surely I'm not the first person to 
> >> have this problem?
> >>
> >> I have managed to work around this for now by copying and modifying the 
> >> code in cgi.parse, but this still feels like a Horrible Hack to me.
> >>
> > Let me get this right. You are aware that CGIHTTPServer module exists. 
> > But you don't want to use that. Instead you want to use your own code. 
> > So you have ended up duplicating some of the functionality of the cgi 
> > library. And it feels like a hack.
> > 
> > Have I missed anything? :-)
> 
> Hey, be nice. Wanting to write a request handler that actually handles a 
> POST request doesn't seem so unreasonable.
> 
> Except...when there are about a bazillion Python web frameworks to 
> choose from, why start from BaseHTTPServer? Why not use one of the 
> simpler frameworks like Karrigell or Snakelets or CherryPy?

It may come to that.  I just thought that what I'm trying to do is so 
basic that it ought to be part of the standard library.  I mean, what do 
people use BaseHTTPServer for if you can't parse form input?

> Here is the query-handling code from Karrigell's CustomHTTPServer.py, 
> good at least for a second opinion:
> 
>      def do_POST(self):
>          """Begin serving a POST request. The request data must be readable
>          on a file-like object called self.rfile"""
>          ctype, pdict = 
> cgi.parse_header(self.headers.getheader('content-type'))
>          self.body = cgi.FieldStorage(fp=self.rfile,
>              headers=self.headers, environ = {'REQUEST_METHOD':'POST'},
>              keep_blank_values = 1, strict_parsing = 1)
>          # throw away additional data [see bug #427345]
>          while select.select([self.rfile._sock], [], [], 0)[0]:
>              if not self.rfile._sock.recv(1):
>                  break
>          self.handle_data()
> 
> Here is CherryPy's version from CP 2.1:
> 
>          # Create a copy of headerMap with lowercase keys because
>          # FieldStorage doesn't work otherwise
>          lowerHeaderMap = {}
>          for key, value in request.headerMap.items():
>              lowerHeaderMap[key.lower()] = value
> 
>          # FieldStorage only recognizes POST, so fake it.
>          methenv = {'REQUEST_METHOD': "POST"}
>          try:
>              forms = _cpcgifs.FieldStorage(fp=request.rfile,
>                                        headers=lowerHeaderMap,
>                                        environ=methenv,
>                                        keep_blank_values=1)
> 
> where _cpcgifs.FieldStorage is cgi.FieldStorage with some extra accessors.

Here's what I actually ended up doing:

def parse(r):
  ctype = r.headers.get('content-type')
  if not ctype: return None
  ctype, pdict = cgi.parse_header(ctype)
  if ctype == 'multipart/form-data':
    return cgi.parse_multipart(r.rfile, pdict)
  elif ctype == 'application/x-www-form-urlencoded':
    clength = int(r.headers.get('Content-length'))
    if maxlen and clength > maxlen:
      raise ValueError, 'Maximum content length exceeded'
    return cgi.parse_qs(r.rfile.read(clength), 1)
  else:
    return None

which is copied more or less directly from cgi.py.  But it still seems 
to me like this (or something like it) ought to be standardized in one 
of the *HTTPServer.py modules.

But what do I know?

rg


From rshepard at appl-ecosys.com  Fri Sep 15 12:14:13 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Fri, 15 Sep 2006 09:14:13 -0700 (PDT)
Subject: Coding Nested Loops
Message-ID: <Pine.LNX.4.64.0609150913060.24702@salmo.appl-ecosys.com>

   I want to code what would be nested "for" loops in C, but I don't know the
most elegant way of doing the same thing in python. So I need to learn how
from you folks. Here's what I need to do: build a database table of 180
rows. Each row contains 31 columns: the first is an automatically
incremented integer as the primary key; the next two fields can each contain
one of three strings held in dictionaries, the last 28 fields are random
floats from a third dictionary.

   Of the 180 total rows, each of the three values in the first dictionary
will be the second field in 60 rows. Within each set of 60 rows, there will
be 13 rows containing the first value from the second dictionary, 14 rows
containing the second value from the second dictionary, and 33 rows from
the third value in that dictionary. Again, the final 28 fields in each row
are random values from the third dictionary.

   I suspect that iterators might be the way to accomplish this, but I really
don't know. However, I would like to learn so that I can solve similar
problems by myself.

TIA,

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From steve at holdenweb.com  Wed Sep 13 14:13:34 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 14:13:34 -0400
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
Message-ID: <ee9hn4$898$1@sea.gmane.org>

John Henry wrote:
> Hi list,
> 
> Just to make sure I understand this.
> 
> Since there is no "pointer" type in Python, I like to know how I do
> that.
> 
> For instance, if I do:
> 
>    ...some_huge_list is a huge list...
>    some_huge_list[0]=1
>    aref = some_huge_list
>    aref[0]=0
>    print some_huge_list[0]
> 
> we know that the answere will be 0.  In this case, aref is really a
> reference.
> 
> But what if the right hand side is a simple variable (say an int)?  Can
> I "reference" it somehow?  Should I assume that:
> 
>    aref = _any_type_other_than_simple_one
> 
> be a reference, and not a copy?
> 
Yes. Attributes are always object references. The assignment is actually 
the binding of a specific object to a name in some namespace, (r to an 
element of a sequence or other container object.

This applies *whatever* the type of the RHS experession: the expression 
is evaluated to yield an object, and a reference to the object is stored 
in the name or container element.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From mensanator at aol.com  Sat Sep  9 01:47:09 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 8 Sep 2006 22:47:09 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <gcsMg.9002$bM.7437@newsread4.news.pas.earthlink.net>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
	<pan.2006.09.08.22.02.35.596359@gmx.net>
	<1157759163.349893.233340@m73g2000cwd.googlegroups.com>
	<gcsMg.9002$bM.7437@newsread4.news.pas.earthlink.net>
Message-ID: <1157780829.727904.309780@e3g2000cwe.googlegroups.com>


Dennis Lee Bieber wrote:
> On 8 Sep 2006 16:46:03 -0700, "mensanator at aol.com" <mensanator at aol.com>
> declaimed the following in comp.lang.python:
>
> 	<snip>
>
> 	After a sequence of hypothetical results of occult SQL you show
> this...
> >
> > invoices = [(1,'066','101 Ways to Start A Fight','some Irish
> > gentleman',1919,19.95), \
> > (2,'032','A Sale of Two Titties','Charles Dikkens',1855,20.00), \
> > (3,'001',"Olsen's Standard Book of British Birds
> > (Expurgated)","Olsen",None,99.95), \
> > (4,066,'Ethel the Aardvark Goes Quantity Surveying',None,1975,9.99), \
> > (5,'032','David Coperfield','Edmund Wells',1955,3.95)]
> >
>
> 	... A Python list of tuples!
>
> > Oops! Forgot the quotes around the customer id for item 4.
> > But why didn't it become 66? Because the leading 0 made
> > it octal! A little static typing would have helped here.
> >
> 	Do you routinely populate your databases by editing python lists of
> tuples?

I don't routinely do anything, as I've only been playing with it for
4 days.

> And if you do, why not show us the table definition and insert
> statements that go with the above data?

I was simply following the examples in the Python manuals.
If the examples are poor usage, maybe they shouldn't be in
the manuals.

>
> 	Or do you get the data from some file... What format is that file?

No file. Point is moot.

>
> 	Would you agree that the following is a clean representation of your
> example data, when considered as a CSV data source? (I left off the
> primary key -- we'll just let SQLite add that value). I DID, however,
> normalize the quoting by changing ' to ". (please ignore the line wrap
> on the (Expurgated) -- it does not exist in the data file)
>
> invoice.csv
> -=-=-=-=-=-
> "066","101 Ways to Start A Fight","some Irish gentleman",1919,19.95
> "032","A Sale of Two Titties","Charles Dikkens",1855,20.00
> "001","Olsen"s Standard Book of British Birds
> (Expurgated)","Olsen",None,99.95
> 066,"Ethel the Aardvark Goes Quantity Surveying",None,1975,9.99
> "032","David Coperfield","Edmund Wells",1955,3.95
> -=-=-=-=-=-
>
> 	Now, since you seem to believe that a "customer number" is a string
> data type (implied by the presence of quotes around all but the "bad
> data" record), I've so defined it in the table definition... Ah, but
> what the heck, let's create a table with it defined as an integer too...
>
> SQLiteTest.py
> -=-=-=-=-=-=-=-
> from pysqlite2 import dbapi2 as sql
> import csv
>
> TABLE_DEF_1 = """
>     create table invoice_1
>     (
>         ID integer primary key,
>         CustNo char,
>         Title char,
>         Author char,
>         Year integer,
>         Price float
>     ) """
>
> TABLE_DEF_2 = """
>     create table invoice_2
>     (
>         ID integer primary key,
>         CustNo integer,
>         Title char,
>         Author char,
>         Year integer,
>         Price float
>     ) """
>
> db = sql.connect("test.db")
> cr = db.cursor()
> try:
>     rs = cr.execute(TABLE_DEF_1)
>     db.commit()
> except:     #I know, I should be explicit
>     pass    #assume table already exists
>
> try:
>     rs = cr.execute(TABLE_DEF_2)
>     db.commit()
> except:     #I know, I should be explicit
>     pass    #assume table already exists
>
>
> fin = open("invoice.csv", "rb")
> indata = csv.reader(fin)
>
> print "\nInserting:"
> for r in indata:
>     print r
>     if len(r) != 5:
>         print "^^^Bad Record"
>     else:
>         rs = cr.execute("""insert into invoice_1
>                             (CustNo, Title, Author, Year, Price)
>                             values (?,?,?,?,?)""",
>                         r)
>         rs = cr.execute("""insert into invoice_2
>                             (CustNo, Title, Author, Year, Price)
>                             values (?,?,?,?,?)""",
>                         r)
> db.commit()
>
> fin.close()
>
> print "\nSelect all from Invoice_1 (CustNo is CHARACTER)"
> rs = cr.execute("select * from invoice_1")
> for r in cr:
>     print r
>
> print "\nSelect all from Invoice_2 (CustNo is INTEGER)"
> rs = cr.execute("select * from invoice_2")
> for r in cr:
>     print r
>
> db.close()
> -=-=-=-=-=-=-=-
>
> 	Now, let us run the above program, using the above data file! Again,
> watch out for line wrapping (my comments will be blocked off with """ )
>
> E:\UserData\Dennis Lee Bieber\My Documents\Python Progs>python
> SQLiteTest.py
>
> Inserting:
> ['066', '101 Ways to Start A Fight', 'some Irish gentleman', '1919',
> '19.95']
> ['032', 'A Sale of Two Titties', 'Charles Dikkens', '1855', '20.00']
> ['001', 'Olsens Standard Book of British Birds (Expurgated)"', 'Olsen',
> 'None', '99.95']
> ['066', 'Ethel the Aardvark Goes Quantity Surveying', 'None', '1975',
> '9.99']
> ['032', 'David Coperfield', 'Edmund Wells', '1955', '3.95']
>
> """
> 	Well, look at that... ALL the data from the file is coming in as
> character strings... customer number, year, price, title, author... It's
> ALL character! The difference between quoted and unquoted numbers has
> been lost.
> """

How 'bout that? Maybe I should try harder to make a
better example.

>
> Select all from Invoice_1 (CustNo is CHARACTER)
> (1, u'066', u'101 Ways to Start A Fight', u'some Irish gentleman', 1919,
> 19.949999999999999)
> (2, u'032', u'A Sale of Two Titties', u'Charles Dikkens', 1855, 20.0)
> (3, u'001', u'Olsens Standard Book of British Birds (Expurgated)"',
> u'Olsen', u'None', 99.950000000000003)
> (4, u'066', u'Ethel the Aardvark Goes Quantity Surveying', u'None',
> 1975, 9.9900000000000002)
> (5, u'032', u'David Coperfield', u'Edmund Wells', 1955,
> 3.9500000000000002)
>
> """
> 	No strange results there -- the year and price aren't stored as
> strings, even though they were string data when inserted.
> """
> Select all from Invoice_2 (CustNo is INTEGER)
> (1, 66, u'101 Ways to Start A Fight', u'some Irish gentleman', 1919,
> 19.949999999999999)
> (2, 32, u'A Sale of Two Titties', u'Charles Dikkens', 1855, 20.0)
> (3, 1, u'Olsens Standard Book of British Birds (Expurgated)"', u'Olsen',
> u'None', 99.950000000000003)
> (4, 66, u'Ethel the Aardvark Goes Quantity Surveying', u'None', 1975,
> 9.9900000000000002)
> (5, 32, u'David Coperfield', u'Edmund Wells', 1955, 3.9500000000000002)
>
> """
> 	And look here... Again no strange results -- SQLite didn't even
> treat the leading 0 as a signal that the customer number is octal. They
> come out as integers without leading 0s though -- but then again, I'm
> not using a formatting statement on the output...
> E:\UserData\Dennis Lee Bieber\My Documents\Python Progs>
> """
>
> >
> > Sure, errors happen with static typing. After all, the values still
> > have to match. Dynamic typing allows for more potential errors and,
> > thanks to Murpy's Law, I will have a much bigger problem with data
> > integrity.
> >
> 	SQLite's "dynamic typing" does not mean "random" or "unpredictable"
> typing.
>
> 	The basic rules are fairly simple.
>
> 	IF the data field is declared as a numeric type, AND the input data
> can be coerced to numeric without error, it is stored and returned as a
> numeric value -- one would have to pass in a data value that contained
> non-numeric characters for it to become a character string.

As if that never happens.

>
> 	IF the data field is declared as a character type, AND the input
> data is a numeric, it is converted to a character representation and
> stored/returned as character.
>
> (less basic involves the application of data type converters which are
> probably user supplied)
>
>
> 	As for your example of invoices and customers, surely the
> application isn't trusting the user to type in a raw "customer number"
> for the invoice without first validating it by attempting to retrieve
> that customer from a customer table. Or, more likely, using the customer
> name to look up the number in the customer table, meaning the customer
> number -- whatever it is -- /will/ match the invoice data as it was
> taken directly from the database.
>
> 	Any data supplied to you in file format, if humanly readable, is
> going to be character strings when fed to SQLite UNLESS your code first
> performs some sort of conversion on it -- and I suspect you'll detect
> the bad data when doing that conversion. And, by the way, the octal
> detection only happens for numeric literals IN a Python statement, not
> in conversion of an external string data item to numeric.

Ok, it was a bad example.

>
> >>> int("066")
> 66
> >>> int(066)
> 54
> >>>
>
> 	Of course, if you're being supplied binary data files, you are
> probably using the struct module to extract the numeric data fields...
> But how, I wonder, would one get a non-numeric value using a numeric
> specification on a string of raw bytes?
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From thorsten at thorstenkampe.de  Mon Sep 11 19:23:02 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 12 Sep 2006 00:23:02 +0100
Subject: Running python from a usb drive
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
Message-ID: <d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>

* Steve Holden (2006-09-11 21:37 +0100)
> Uwe Hoffmann wrote:
>> cjl schrieb:
>>>I do set pythonpath, see above.
>> 
>> is pythonpath really case insensitive on windows ?
> 
> Only because the Windows filesystem implements case-insensitive 
> semantics. This is nothing to do with Python:

That's nonsense: "Filenames are Case Sensitive on NTFS Volumes"[1]

Thorsten
[1] http://support.microsoft.com/kb/100625/en-us


From metaperl at gmail.com  Tue Sep 12 09:36:20 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 06:36:20 -0700
Subject: How to get the package, file,
	and line of a method/function invocant?
In-Reply-To: <pan.2006.09.12.06.33.14.274710@gmx.net>
References: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>
	<pan.2006.09.12.06.33.14.274710@gmx.net>
Message-ID: <1158068180.461434.246370@m73g2000cwd.googlegroups.com>


Marc 'BlackJack' Rintsch wrote:
> In <1158038477.221439.15260 at e63g2000cwd.googlegroups.com>, metaperl wrote:
>
> > # Of course I could cheat and pass it, but I don't want to:
> >
> > directories = data.storage.logic(__file__)
>
> Why do you consider a plain and simple solution cheating?
>

Ok now I figured it out. The reason is that this function will be used
by many "client" classes. If we use the plain and simple solution, our
codebase increases in size, because each client class will supply the
function. Not only that, but they might make an error in what they
send.

By having the "server" class do the work, the code base decreases in
size and the amount of errors drops.



From kylotan at gmail.com  Fri Sep 29 04:49:47 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 29 Sep 2006 01:49:47 -0700
Subject: Can recursive descent parser handle Python grammar?
In-Reply-To: <1159484100.469926.25210@h48g2000cwc.googlegroups.com>
References: <1159484100.469926.25210@h48g2000cwc.googlegroups.com>
Message-ID: <1159519787.034676.316060@b28g2000cwb.googlegroups.com>

seberino at spawar.navy.mil wrote:
> I'm a compiler newbie and was curious if Python's language/grammar
> can be handled by a recursive descent parser.

I believe a recursive descent parser can handle any grammar; it just
depends on how pure you want it to be.

-- 
Ben Sizer



From MonkeeSage at gmail.com  Sun Sep 17 03:23:14 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 17 Sep 2006 00:23:14 -0700
Subject: Finding dynamic libraries
References: <mailman.131.1158333391.10491.python-list@python.org>
	<1158367145.252363.21230@d34g2000cwd.googlegroups.com>
	<mailman.166.1158391127.10491.python-list@python.org>
Message-ID: <1158477794.780781.83700@i42g2000cwa.googlegroups.com>

Robert Kern wrote:
> No, his extensions link against other shared libraries which are not Python
> extensions. Those shared libraries are in nonstandard locations because he is
> running his tests before installing the libraries and his Python code.

In that case, couldn't it be done by placing a copy/symlink to the
shared library in the same directory as the python extension, then
reload()'ing the extension from the already running python process? I
think, but am not certain, so don't hold me to it, that dlopen and
kindred will search the working directory for a library before falling
back to the cache or LD_LIBRARY_PATH and so on. Worth a shot mabye.

Regards,
Jordan



From jxjohns at lifeway.com  Thu Sep 28 09:40:57 2006
From: jxjohns at lifeway.com (Jim)
Date: 28 Sep 2006 06:40:57 -0700
Subject: Extra Newby question - Trying to create md5 File Listing
In-Reply-To: <mailman.852.1159416078.10491.python-list@python.org>
References: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@
	lifeway.com>
	<OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@lifeway.com>
	<mailman.852.1159416078.10491.python-list@python.org>
Message-ID: <1159450857.229421.28010@m73g2000cwd.googlegroups.com>

Gabriel and Dennis, than you for all your help.  I ended up talking to
a friend a work about it and here's what we cam up with.  It's very
similar to your suggestions so again, thanks.  I just need to add a
machine name so I can get a md5 log from multiple machines and put it
in a database for version control monitoring.

Blessings, Jim.

#!/usr/bin/python
# Filename: md5makr.py

import sys
import os, os.path
import glob
import md5
import ConfigParser

config = ConfigParser.ConfigParser()
config.read('md5makr.ini')

outputfilname = config.get('general', 'outputfile')
f = file(outputfilname,'wt')
fileconfig = config.get('general', 'inputfiles')
# print 'fileconfig is ', fileconfig

fl = file(fileconfig,'r')
pathlist = [fli.strip() for fli in fl.readlines()]
# print 'fileData is ', fileData  # so far so good

for p in pathlist:
  filelist = glob.glob(p)
  for fn in filelist:
    data = file(fn,'rb').read()
    hexstring = md5.md5(data).hexdigest()
    f.write(fn + '\t' + hexstring + '\n')

f.close()



From hg at nospam.com  Mon Sep 25 16:17:04 2006
From: hg at nospam.com (hg)
Date: Mon, 25 Sep 2006 15:17:04 -0500
Subject: ruby %w equivalent
In-Reply-To: <1159214388.394027.119040@k70g2000cwa.googlegroups.com>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
Message-ID: <WVWRg.4782$Go3.723@dukeread05>

MonkeeSage wrote:
> hg wrote:
>> Why would they want to make such an obscure API ? ... didn't they have
>> Python to learn from (I am truly amazed - nothing cynical ...just ...
>> why ?!!!!)
> 
> In ruby there are several special literal notations, just like python.
> In ruby it goes like this:
> 
> %{blah} / %Q{blah} # same as "blah" but igornes " and '
> %q{blah} # same as 'blah' but no interpolation
> %w{blah blah} # same as "blah blah".split
> %r{blah} # same as /blah/
> %x{ls} # same as `ls`
> 
> Sometimes they are very useful, and sometimes they are cumbersome. It's
> up to the programmer to implement them effectively.
> 
> Regards,
> Jordan
> 
I am certain Ruby is a very effective language (I read much good stuff
about it) ... it's just that I cannot comprehend why a "new" language
would attempt so hard to look like assembly.


Regards,

hg



From sturlamolden at yahoo.no  Thu Sep 21 18:23:31 2006
From: sturlamolden at yahoo.no (sturlamolden)
Date: 21 Sep 2006 15:23:31 -0700
Subject: Writing Video conference software for Windows
In-Reply-To: <mailman.420.1158855620.10491.python-list@python.org>
References: <mailman.265.1158667756.10491.python-list@python.org>
	<1158684171.132741.143840@i42g2000cwa.googlegroups.com>
	<mailman.420.1158855620.10491.python-list@python.org>
Message-ID: <1158877411.269277.118050@m7g2000cwm.googlegroups.com>


Paolo Pantaleo wrote:

> Well I need something like 5-10 fps. An issue is the comression
> method: MPEG and friends aren't good (I think) for compressing stuff
> with sharp borders. Maybe I could use A sequence of PNG images, but it
> isn't a great solution.

You probably want to use is VideoCapture for capturing digital video
from e.g. USB webcameras (videocapture.sourceforge.net), Twisted for
asynchronous sockets (twistedmatrix.com), and PyMedia for video and
audio codec (pymedia.org). For GUI and graphics there are a number of
candidates, e.g. PyGTK or PyGame.

Video conference is an I/O bound task (except for the audio/video
codec), and you will consequently gain nothing by using C++ over
Python. The only part that is CPU-bound part (where C++ could
theoretically be better) is the media codec, but you can leave that to
PyMedia's C extensions. Python will most likely not be the bottleneck!

Sure, you could use C++ instead. However, you would quickly be
frustrated with Windows' extremely complex native APIs. E.g. DirectShow
for digital video capture, Winsock for asynchronous sockets,
Microsoft's multimedia APIs for codec, and perhaps MFC for GUI. Using
Python is a good advice!



From outstretchedarm at hotmail.com  Thu Sep  7 11:27:56 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 08:27:56 -0700
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <4500338B.1070408@websafe.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
Message-ID: <1157642876.793030.134030@p79g2000cwp.googlegroups.com>

thank you genteman.

however, its not working :(

I resaved it, but same thing.



From gorgery at hotmail.com  Wed Sep 20 22:50:05 2006
From: gorgery at hotmail.com (gre)
Date: Thu, 21 Sep 2006 12:50:05 +1000
Subject: Need some help here
In-Reply-To: <UDlQg.203$Go3.192@dukeread05>
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
	<UDlQg.203$Go3.192@dukeread05>
Message-ID: <4511fc9f$0$5109$afc38c87@news.optusnet.com.au>

di wrote:
> "Kareem840" <KareemOfweet840 at hotmail.com> wrote in message 
> news:1158790201.887958.84700 at k70g2000cwa.googlegroups.com...
>> Hello. Unfortunately, I am in need of money to pay my credit card
>> bills. If you could spare just $1, I would be grateful. I have a Paypal
>> account. Kramer1260 at hotmail.com. I swear this will go to my card
>> balances. Thank you.
>>
> 
> There's this clown in Africa that will help you, please contact him. 
> 
> 
Post your bank account details and i will transfer my nigerian 
inheritance to you..........honest!!!


From anthra.norell at vtxmail.ch  Fri Sep 29 05:08:18 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Fri, 29 Sep 2006 11:08:18 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <1159486739.858408.73100@i42g2000cwa.googlegroups.com>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>	<mailman.901.1159469166.10491.python-list@python.org>
	<1159486739.858408.73100@i42g2000cwa.googlegroups.com>
Message-ID: <451CE282.8020009@vtxmail.ch>

bearophileHUGS at lycos.com wrote:
> Frederic Rentsch:
>   
>> Good idea, but shorter with ->
>>  >>> SE.SE ('se_definition_files/int_to_binary.se') ('%X' % 987654321)
>> '00111010110111100110100010110001'
>>     
>
> Note that your version keeps the leading zeros.
> Have you tested the relative speeds too?
> (I'll probably have to learn to use SE.)
>
> Bye,
> bearophile
>
>   
If you say speed, I presume you mean speed of execution. No I have not 
tested that. I know it can't be fast on a test bench. After all, SE is 
written in Python. I did a first version fifteen years ago in C, am 
still using it today on occasion and it runs much, much faster than this 
Python SE. This SE here could be done in C if it passes the test of 
acceptance.
     Professionals need to measure execution speed as a part of 
documenting their products. I am not a professional and so I am free to 
define my own scale of grades: A (fast enough) and F (not fast enough). 
I have yet to encounter a situation where SE gets an F. But that says 
less about SE than about my better knowledge which prevents me from 
using SE to, say, change colors in a 50 Mb bitmap. Obviously, "fast 
enough" and "not fast enough" pertains not to code per se, but to code 
in a specific situation. So, as the saying goes: the proof of the 
pudding ...
     Another kind of speed is production speed. I do believe that SE 
rather excels on that side. I also believe that the two kinds of speed 
are economically related by the return-on-investment principle.
     The third kind of speed is learning speed. SE is so simple that it 
has no technical learning curve to speak of. It's versatility comes from 
a wealth of application techniques that invite exploration, invention 
even. Take leading zeroes:

Leading zeroes can be stripped in a second pass if they are made 
recognizable in the first pass by some leading mark that is not a zero 
or a one. ([^01]; I use "@" in the following example). To purists this 
may seem hackish. So it is! And what's wrong with that if it leads to 
simpler solutions?

 >>> Hex_To_Binary = SE.SE ('0=0000 1=0001 2=0010 3=0011 4=0100 5=0101 
6=0110 7=0111 8=1000 9=1001 A=1010 a=1010 B=1011 b=1011 C=1100 c=1100 
D=1101 d=1101 E=1110 e=1110 F=1111 f=1111 | ~[^01]0*~=')
 >>> Hex_To_Binary.set (keep_chain = 1)
 >>> Hex_To_Binary ('@%x' % 1234567890)
'1001001100101100000001011010010'
 >>> Hex_To_Binary.show ()

... snip ...

Data Chain
----------------------------------------------------------------------------------
  @499602d2
0 
--------------------------------------------------------------------------------
  @01001001100101100000001011010010
1 
--------------------------------------------------------------------------------
  1001001100101100000001011010010
----------------------------------------------------------------------------------


Frederic

(The previously posted example "Int_To_Binary = SE.SE (SE.SE ( ..." was 
a typo, or course. One (SE.SE  does it. Sorry about that.)



From crystalattice at gmail.com  Sat Sep 23 19:48:21 2006
From: crystalattice at gmail.com (crystalattice)
Date: 23 Sep 2006 16:48:21 -0700
Subject: Looking for opinions
References: <1158957281.793034.191730@m7g2000cwm.googlegroups.com>
	<45159ef7$0$22860$626a54ce@news.free.fr>
Message-ID: <1159055301.440027.275620@b28g2000cwb.googlegroups.com>


Bruno Desthuilliers wrote:
> I have few experience with RPG softwares, but if your "domain" logic si
> anything more than trivially complex, it's always better to keep it as
> decoupled as possible from the user interface (unless of course the user
> interface actually is the domain !-). FWIW, this doesn't prevent you
> from using a web framework as the front-end...

Sorry, but what exactly do you mean by "domain"?  I've heard of domains
before but I think my interpretation is different from yours in this
respect.  Is this like the back-end code or do you mean something else?



From bignose+hates-spam at benfinney.id.au  Wed Sep 27 20:19:37 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 28 Sep 2006 10:19:37 +1000
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
Message-ID: <87zmckkfl2.fsf@benfinney.id.au>

Mike Playle <usenet at vfx.org.uk> writes:

> License keys exist to make it easier for honest users to remain
> honest.

What doubletalk. If usage restrictions were in *any* way what end users
wanted, they'd choose software that has it over software that does
not.

Usage restrictions serve *no* want of the end user.

> For instance a customer might want to buy a license to use your
> software on up to 5 machines at once, but still have the software
> installed on every machine in the company.

This need is adequately served by not imposing usage restrictions. Any
effective imposition of usage restrictions is hostile to the wants of
the user.

If usage restrictions are brought into the picture, it is to serve the
wants of someone else, *not* the end user. It is disingenuous to
suggest otherwise.

> License systems like FlexLM can work here, to make it easier for
> them to ensure that they comply with the terms of the license.

This is describing a want of the copyright holder, *not* the end user.

> Forget about the people who'll crack your software. Ask yourself
> whether a license key scheme offers anything to the people who won't
> try to crack it. If it does, then actually implementing the scheme
> becomes trivial; if it doesn't, then leave it out, because it won't
> help against crackers.

Very sound advice, I agree entirely.

-- 
 \             "If you're not part of the solution, you're part of the |
  `\                                   precipitate."  -- Steven Wright |
_o__)                                                                  |
Ben Finney



From andrew-news at andros.org.uk  Thu Sep 14 19:31:02 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Fri, 15 Sep 2006 00:31:02 +0100
Subject: Algorithm Question
In-Reply-To: <1158015700.817709.253180@h48g2000cwc.googlegroups.com>
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
	<ee44nl$8r$1$830fa79d@news.demon.co.uk>
	<1158015700.817709.253180@h48g2000cwc.googlegroups.com>
Message-ID: <eeconn$s2n$1$8300dec7@news.demon.co.uk>

John Machin wrote:
> A quick silly question: what is the problem that you are trying to
> solve?

A fair question :-)

The problem may seem a bit strange, but here it is:

I have the ability to query a database in a legacy system and extract 
records which match a particular pattern. Specifically, I can perform 
queries for records that contain a given search term as a sub-string of 
a particular column. The specific column contains an address. This 
database can only be accessed through this particular interface (don't 
ask why, it's one of the reasons it's a *legacy* system).

I also have access to a list that contains the vast majority (possibly 
all) the addresses which are stored in the database.

Now I want to issue a series of queries, such that when I combine all 
the data returned I have accessed all the records in the database. 
However, I want to minimise the total number of queries and also want to 
keep the number of records returned by more than one query small.

Now the current approach I use is to divide the addresses I have into 
tokens and take the last token in the address (excluding the postal 
code). The union of these "last tokens" forms my set of queries. The 
last token in the address is typically a county or a town in a UK address.

This works, but I was wondering if I could do something more efficient. 
The problem is that while the search term "London" matches all the 
addresses in London it also returns all the addresses containing "London 
Road", and a lot of towns have a London Road. Perhaps I would be better 
off searching for "Road", "Street", "Avenue" ....

It occurred to me that this my be isomorphic to a known problem, however 
given that I want to keep two things small, the problem isn't very well 
defined.

The current approach works, I was just musing whether there was a faster 
approach, so don't think about it too hard.

- Andrew


From utabintarbo at gmail.com  Tue Sep  5 15:03:38 2006
From: utabintarbo at gmail.com (utabintarbo)
Date: 5 Sep 2006 12:03:38 -0700
Subject: Programming isn't dangerous...
In-Reply-To: <edke6v$lpk$1@panix3.panix.com>
References: <edke6v$lpk$1@panix3.panix.com>
Message-ID: <1157483018.890097.179400@h48g2000cwc.googlegroups.com>


Darwinism in action! :-P



From fiedzia at fiedzia.prv.pl  Thu Sep 14 21:52:10 2006
From: fiedzia at fiedzia.prv.pl (Maciej Dziardziel)
Date: Fri, 15 Sep 2006 03:52:10 +0200
Subject: matplotlib
References: <1158282047.089110.284140@h48g2000cwc.googlegroups.com>
Message-ID: <20060915015210.7B5F.0.NOFFLE@fiedzia.homeip.net>

diffuser78 at gmail.com wrote:

> Can somebody give some quick pointers to start off with matplotlib.
> 
> Thanks

http://matplotlib.sourceforge.net/tutorial.html

-- 
Maciej "Fiedzia" Dziardziel (maciejdziardziel at poczta.wp.pl)

If you can read this, you are in phaser range.


From MonkeeSage at gmail.com  Fri Sep  8 05:24:49 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 8 Sep 2006 02:24:49 -0700
Subject: how do you get the name of a dictionary?
References: <1155926079.935209.21120@p79g2000cwp.googlegroups.com>
	<1156268752.574983.123520@75g2000cwc.googlegroups.com>
	<pan.2006.08.22.20.05.58.528777@gmx.net>
	<1156281268.865624.302070@b28g2000cwb.googlegroups.com>
	<mailman.9666.1156281679.27775.python-list@python.org>
	<1156283135.985893.186500@m73g2000cwd.googlegroups.com>
	<mailman.9668.1156283600.27775.python-list@python.org>
	<1156284812.469380.274370@b28g2000cwb.googlegroups.com>
	<mailman.9686.1156315895.27775.python-list@python.org>
	<1156350580.363393.256730@74g2000cwt.googlegroups.com>
	<mailman.9713.1156351048.27775.python-list@python.org>
Message-ID: <1157707489.119939.136720@m79g2000cwm.googlegroups.com>

Simon Brunning wrote:
> It's not inconcevable that Python could behave that way, it's just
> that it would impose an overhead on the 99.999% of Python users who
> would have no use for the feature. It's a price not worth paying.

I guess I don't get the problem with the OP's request, either. There is
already a name<->identifier mapping in place for objects. You can type
the object name and python magically gives you the object by matching
the name to the identifier. It would probably be pretty simple to
expose the name or names associated with the identifier, if any, via
built-in function or method. There would be no extra overhead. There
would be no speed hit if you didn't call the function/method. There
would be very little implementation expense (I would imagine), as the
code that is already in place to do look-ups from the parser to the
object map could probably be reused or hooked into. But seeing as it
isn't a general-purpose feature, and Steven's function would be
sufficient for most cases, I'm not saying it should be a core feature;
I'm just saying that I don't see what the big huff is about.



From duncan.booth at invalid.invalid  Thu Sep 28 04:07:30 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 28 Sep 2006 08:07:30 GMT
Subject: A critique of cgi.escape
References: <slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.849.1159413324.10491.python-list@python.org>
	<efflm1$p85$2@lust.ihug.co.nz>
Message-ID: <Xns984C5C97B45Bduncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

>> Also, because Python has a 
>> conservative policy on backwards incompatible changes, you are protected
>> from some wanker going and changing the HTML safe mappings arbitrarily,
>> say using numerical entity references instead of &gt;, &lt; and &amp;.
> 
> Why would that be wrong? It would still be consistent with the
> documentation.
> 
It would be wrong as he said because "Python has a conservative policy on 
backwards incompatible changes". In general (although they may not always 
succeed) Python's core developers try not to change functionality even when 
that functionality isn't clearly documented. Rather if it becomes an issue 
they would prefer to clarify the documentation.

Yes, there is a downside to this: a lot of the Python standard libraries 
aren't as good as they could be if incompatible changes were allowed, but 
it does reduce maintenance headaches.

The solution is usually that when the standard api is insufficient you wrap 
it in something else. cgi.escape is a good example: most people writing web 
applications never call it directly because they produce their html output 
using a templating language which does all the necessary quoting for them 
automatically (e.g. Zope's tal language). If you use tal then you have zero 
chance of forgetting to use &quote; in a situation where it is required, 
but an incompatible change to cgi.escape could still break your existing 
code.


From lexhider at internode.on.net  Thu Sep  7 21:28:08 2006
From: lexhider at internode.on.net (Lex Hider)
Date: Fri, 8 Sep 2006 11:28:08 +1000
Subject: Request for tips on my first python script.
Message-ID: <200609081128.08849.lexhider@internode.on.net>

Hi,
Apologies if this is against etiquette. I've just got my first python app up 
and running. It is a podcast aggregator depending on feedparser. I've really 
only learnt enough to get this up and running.

Any tips on the code quality and use of python would be appreciated. I've got 
a feeling the overall structure is up the creek.
approx 220 LOC.
file: GodCast.py

Cheers,
Lex.

#!/usr/bin/python
# GodCast: podcast aggregator!
# depends on wget & lynx
# * one of the main features of GodCast is it's use of bandwidth.
#    Many podcatchers

# http://www.faqts.com/knowledge_base/view.phtml/aid/422/fid/17
# TODO: not found log
# TODO:
# config file
# opml feed list?
# pygtk/pyqt/qtkde gui?

# possible flags: test, print but don't actual do anything

import re, feedparser, os, sys, shutil, time, getopt
import urllib2
import urllib
import md5

boz = ""
HOME = os.path.expanduser("~")
# user configurable
#maxChecksPerDay = 8
#maxChecksPerDay = 12
maxChecksPerDay = 24
myTemp = '/tmp'
#podDir = os.path.join(HOME, 'Audio/Podcasts')
podDir = os.path.join(HOME, 'Podcasts')
# end user configurable
downDir = os.path.join(myTemp, 'Podcasts')
dotDir = os.path.join(HOME, '.aGodCast')
logFile = os.path.join(dotDir, 'log') #list of downloaded urls
cacheDir = os.path.join(dotDir, 'cache')
ignoreNotFound = False # if true, add files not found to log
# list of feeds, ignore lines not beginning ^http
feedList = os.path.join(dotDir, 'feeds.txt')


def exitFunc():
    #f.close()
    #log.close()
    if boz:
        print boz


def makeDirs(*dirs):
    for dir in dirs:
        if not os.path.exists(dir):
            os.makedirs(dir)


# render is used because feeds use a lot of html, not just plain text.
def render(html):
    if html:
        html = re.sub('"', '\\"', html.encode('utf8'))
        #command = 'echo "' + html + '" | w3m -dump -T text/html'
        #command = 'echo "' + html + '" | html2text'
        command = 'echo "' + html + '" | lynx -dump -stdin -force_html'
        os.system(command)


def localMD5(url):
    hash = md5.new(url).hexdigest() + '.xml' #unique name from url
    return os.path.join(cacheDir, hash)


def cache(url):
    max  = 60 * 60 * 24 / maxChecksPerDay #seconds
    myfile = localMD5(url)
    if os.path.isfile(myfile):
        elapsed = int(time.time()) - os.path.getmtime(myfile)
        if elapsed <= max:
            return
    print "FETCHING:", url + ' ...'
    urllib.urlretrieve(url, myfile)
    # handle half finish?


def updateCache(feeds):
    l = []
    print "updating local xml cache..."
    for feed in file(feeds, "r").read().split('\n'):
        if not re.match('^http://', feed): # feedList ignores anything but 
urls
            continue
        # TODO: handle whitespace, strip trailing
        cache(feed)
        l.append([localMD5(feed), feed])
    print "cache up to date"
    return l


def geturl(url):
    try:
        redir =  urllib2.urlopen(url).geturl()
    except urllib2.HTTPError, e:
        if e.code != 404:
            print url
            print "geturl HTTPError:", e.code
        return e.code
    except urllib2.URLError, e:
        # (110, 'Connection timed out')
        print e.reason
        #print "geturl URLError:", e.code
    else:
        return redir
    return 0


def htmlTitle(mainTitle, subTitle):
    s = '<HR>'
    s += '<H2>' + mainTitle + '</H2>'
    s += '<H3>' + subTitle + '</H3>'
    return s


def downloadPod(url, dest):
    kb = 2
    success = 0
    command = 'wget --continue -O "' + dest + '" "' + url + '"'
    status  =  os.system(command)
    if status == success:
        return True
    else:
        print "\nWGET:", status
        if status == kb:
            pass
            #raise KeyboardInterrupt
        return False


def downloadQueue(q, latest):
    for x in range(latest):
        for [feedTitle, castList] in q:
            if not len(castList) > x:
                continue
            cast = castList[x]
            if cast is None:
                continue
            url = cast.enclosures[0]['href']
            redirect = geturl(url) # TRAFFIC
            if type(redirect) != int: #success
                render(htmlTitle(feedTitle + ": #" + str(x+1), cast.title))
                render(cast.description)

                podFile = os.path.basename(redirect).split('?')[0]
                permDir = os.path.join(podDir, feedTitle)
                permFile = os.path.join(permDir, podFile)
                tempDir = os.path.join(downDir, feedTitle)
                tempFile =  os.path.join(tempDir, podFile)
                if not os.path.isfile(permFile):
                    makeDirs(tempDir, permDir)
                    if downloadPod(redirect, tempFile): # TRAFFIC
                        shutil.move(tempFile, permFile)
                        log(url)
                    else:
                        print "EXITING"
                        sys.exit(2)
                else:
                    render("<BR>*** ON HARD-DRIVE ***")
                    log(url)
            elif redirect == 404:
                print 'NOT FOUND:', url
                if ignoreNotFound:
                    print '\tWILL NO LONGER ATTEMPT TO DOWNLOAD\n'
                    log(url)
            else:
                sys.exit(2)


def log(url):
    file(logFile, 'a').write(url + "\n")


def main(args):
    sys.exitfunc = exitFunc
    makeDirs(dotDir, podDir, downDir, cacheDir)
    #make file if doesn't exist, may be better solution?
    X = file(logFile, 'a')
    latest = 13 #get the first x casts for each feed

    try:
        opts, args = getopt.getopt(sys.argv[1:], "l:", 
["latest=", "notfound"])
    except getopt.GetoptError:          
        sys.exit(2)                     
        #usage()                         
    
    for opt, arg in opts:
        if opt in ("-l", "--latest"):
            latest = int(arg)
        elif opt in ("--notfound"):
            ignoreNotFound = True #add notfound files to log 
    
    Q = []
    for [xmlFile, url] in updateCache(feedList):
        output = ""
        xml = feedparser.parse(xmlFile)
        if xml.channel.has_key('title'): #skip dodgy feeds
            itemQ= []
            for item in xml['items'][:latest]:
                if item.has_key('enclosures'):
                    podURL =  item.enclosures[0]['href']
		    #check if url in log
                    if file(logFile, 'r').read().find(podURL) < 0:
                        itemQ.append(item)
                        output += htmlTitle(xml.channel.title, item.title)
                        output += item.description 
                    else:
                        itemQ.append(None)
            Q.append([xml.channel.title, itemQ])
        else:
            print "DODGY FEED:", url
            if xml.bozo:
                boz += "BOZO: " + xml.bozo_exception.getMessage() + "\t" + url
            sys.exit(2) #time.sleep(1) # allow ctrl+c #continue
        render(output)
    
    if Q is not None:
        render('<HR><H1>DOWNLOADING QUEUE</H1><HR>')
        downloadQueue(Q, latest)

######################################################
if __name__=="__main__":
    main(sys.argv)


From jstroud at mbi.ucla.edu  Fri Sep 22 16:44:10 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 20:44:10 GMT
Subject: Building things with setup.py
In-Reply-To: <451446F6.5060807@v.loewis.de>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<451368E9.10901@v.loewis.de>
	<A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>
	<451446F6.5060807@v.loewis.de>
Message-ID: <uWXQg.3954$IA.1364@newssvr11.news.prodigy.com>

Martin v. L?wis wrote:
> James Stroud schrieb:
> 
>>>What happens if you omit these flags?
>>
>>Please see my last message to Robert Kern.
> 
> 
> If you don't want me to help you, that's fine, then I won't.
> 
> I couldn't find an answer to this question in any of your
> messages in this thread.

Sorry, I didn't mean to sound dismissive. Perhaps I misunderstood what 
"these" actually referred to. The results of omitting these flags 
specifically:

      "-lpython2.5 -lpthread -lm -lutil -ldl -shared"

Are posted here for both numpy and scipy:

http://www.jamesstroud.com/build-scipy-logs/build-scipy-py2.5-euler.txt
http://www.jamesstroud.com/build-scipy-logs/build-numpy-py2.5-euler.txt

I have not tried unsetenv'ing $LDFLAGS entirely, an option which did not 
occur to me given their necessity for just about everything else. If you 
think that this is a worthwhile experiment, I will run it.


 > Still, it *should* work out of the box. If it doesn't, it
 > means there is an error somewhere. If you don't want to
 > help finding the error, that's fine, too (but please say
 > so, because that will constrain the solution space).

I think I would like to know how to avoid or correct these sort of 
issues in the future, which seem to be limited, for me at least, to 
scipy and numpy, with the possible exception of MySQLdb and its 
dependency on zlib. Ideally, I would like to understand exactly what 
causes these errors in addition to knowing what I can do to correct them 
in the future.


James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From robert.kern at gmail.com  Sat Sep 23 16:51:15 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 15:51:15 -0500
Subject: f2py on windows tutorials
In-Reply-To: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
Message-ID: <ef46nv$pa8$1@sea.gmane.org>

Flavio wrote:
> Hello,
> 
> Compiling f2py extensions in Linux is a trivial task, You can even
> automate it with distutils. Now, in a Windows machine this does not
> seem to be an easy task. At least, I could not find any decent tutorial
> on how to do it.
> 
> Is there a  way to do this? Can some one point me to a tutorial.,
> please?
> 
> I have tried some approaches: mingw, xmingw (cross-compiling from
> Linux) and Python enthought edition (which is supposed to come
> preconfigured to enable people to use Scipy tools, such as f2py)
> Withouth success.
> 
> Anyone out there knows how to do this? Anyone from the Scipy dev team
> care to document it?

<shrug> It's worked fine for me using Enthon (which comes with mingw and g77, 
things you will need at minimum).

What versions of Enthon and f2py are you using?
What exactly did you try?
What errors are you seeing?
How are you trying to compile your modules, i.e. with just the f2py command or 
are you building a setup.py file?
Did you pass "--compiler=mingw --fcompiler=gnu" to your build command?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From python.sam at googlemail.com  Mon Sep 25 13:20:54 2006
From: python.sam at googlemail.com (sam)
Date: 25 Sep 2006 10:20:54 -0700
Subject: python interpreter on solaris 10
Message-ID: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>

dear all,

having spent the last couple of weeks getting to grips with python on
windows, i am in the position of trying to make the transition to my
newly arrived ultra 20.

however, although there are plenty of files with idle somewhere in the
title, idle.py (which i assume is the interpreter) will not open, as
there is 'no installed viewer.' surely sun have not installed python
only for it to unusable? i may well be completely off base here, as
using unix is still very much a mystery to me.

i have tried /usr/sfw/lib/python at the command prompt. it worked
yesterday, but having now moved and restored the python2.3 file to its
original position, i find the same command prompt failing to work. have
i messed it up by moving it around?

my workstation remains a shiny box which does naught but hum
malevolently. is there hope?

thank you,

sam



From larry.bates at websafe.com  Fri Sep  8 09:57:28 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Fri, 08 Sep 2006 08:57:28 -0500
Subject: PILGraph Upgrade or Alternative Suggestion
In-Reply-To: <pN3Mg.4676$y61.3564@fed1read05>
References: <pN3Mg.4676$y61.3564@fed1read05>
Message-ID: <aaidnV6UtPQq65zYnZ2dnUVZ_oKdnZ2d@comcast.com>

Roger wrote:
> Anyone have an updated version of PILGraph beyond 0.1a7 or a suggestion
> for a light-weight alternative?
> 
> By light-weight I mean something that doesn't require many/any packages
> other than PIL and will create plain old round pie-chart PNG graphics
> with titles and legends.  I do need multi-platform for both Linux and
> Windows.  The intended use is to create graphics for web pages on the fly.
> 
> TIA,
> 
> Roger

ReportLab Graphics works pretty well for me.

-Larry Bates


From michael.hatmaker at gmail.com  Thu Sep 14 21:21:18 2006
From: michael.hatmaker at gmail.com (michael.hatmaker at gmail.com)
Date: 14 Sep 2006 18:21:18 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <edp56g$66u$1@foggy.unx.sas.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
Message-ID: <1158283278.466578.283630@p79g2000cwp.googlegroups.com>


Kevin D. Smith wrote:
> I've written a simple Python extension for UNIX, but I need to get it
> working on Windows now.  I'm having some difficulties figuring out how
> to do this.  I've seen web pages that say that MS Visual Studio is
> required, and other that say that's not true, that MinGW will work.
> Then there is Mike Fletcher's web page
> (http://www.vrplumber.com/programming/mstoolkit/) that describes in
> detail how to build extensions, but most of the links to external
> software are no longer valid.  I think it's safe to say that I am
> completely lost, as there appears to be no authoritative, up-to-date
> description on how to make this work.
>
> --
> Kevin D. Smith

Borland released a free version of their C++ compiler and IDE on 9/4,
coinciding with my need to move my GeoTrans extension from Linux to
Windows.  I didn't need the IDE for the project, since my
GeoTransMethodsSetup.py script from Linux worked fine, running it with
the command line argument "--compiler=bcpp".  Add paths to the include
directories and library directories.

The biggest headache was a bunch of nonsense linker error messages,
which turned out to be because I had made the mistake of installing the
compiler under "Program Files", and setup does not behave well with
spaces in the path name.  As a quick work-around, I used the DOS 8.3
filename.  Next time I will install Borland in a path with no spaces in
the name.  So, I was able to use a state-of-the-art compiler, rather
than work with an obsolete version of some compiler relic.

from distutils.core import setup, Extension
GeoTransMethods = Extension('GeoTransMethods',
				include_dirs = ['C:\python24\include'],
				library_dirs = [
				r"C:\PROGRA~1\Borland\BDS\4.0\lib",
				r"C:\PROGRA~1\Borland\BDS\4.0\lib\release",
				r"C:\PROGRA~1\Borland\BDS\4.0\lib\obj",
				r"C:\PROGRA~1\Borland\BDS\4.0\lib\PSDK",
				r"C:\PROGRA~1\Borland\BDS\4.0\lib\Indy9"],
				sources = ["GeoTransMethods.c", "mgrs.c", "utm.c", "ups.c",
"tranmerc.c", "polarst.c"])

setup(name="GeoTransMethods", version="1.0",
      ext_modules=[GeoTransMethods])



From __peter__ at web.de  Fri Sep  1 09:34:27 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 01 Sep 2006 15:34:27 +0200
Subject: Question about import and namespace
References: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>
	<ed96t9$l81$03$1@news.t-online.com>
	<1157115719.609101.73660@i42g2000cwa.googlegroups.com>
Message-ID: <ed9cs3$ega$00$1@news.t-online.com>

jdemoor at gmail.com wrote:

> Thanks for the replies.
> 
>> You can do both
>>
>> from module import *
>> import module
>>
>> as these kinds of import are not mutually exclusive.
> 
> Would this run the code in 'module' twice, or just make the objects in
> it accessible by several names ?

The latter. But why don't you try it yourself by putting a 

print "importing module" # you will see that once

statement in the module? 

There is one notable exception, the application's main module:

$ cat main.py
import main
print "importing main as", __name__
$ python main.py
importing main as main
importing main as __main__

Peter


From fakeaddress at nowhere.org  Wed Sep 13 00:12:16 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 13 Sep 2006 04:12:16 GMT
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <mailman.412.1158116942.5279.python-list@python.org>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>	<mailman.320.1158045174.5279.python-list@python.org>	<ECINg.1207$IA.290@newssvr11.news.prodigy.com>
	<mailman.412.1158116942.5279.python-list@python.org>
Message-ID: <AyLNg.1256$IA.85@newssvr11.news.prodigy.com>

Tim Peters wrote:
> [...]  The most valuable general technique he (eventually ;-)
> explained he called "unrolling", and consists of writing a regexp in
> the form:
> 
>    normal* (?: special normal* )*
> 
> where the sets of characters with which `normal` and `special` can
> start are disjoint.  Under most "NFA" implementation, such a regexp is
> immune to most bad behaviors, whether finding very long matches, or in
> searching a very long string that happens not to contain any matches.

[...]
> As a result, you can use it with reasonably high confidence.  For
> /why/ that's so, read the rest of his book ;-)  In effect, it gives
> the search engine only one possible course of action at each character
> in the target string.  So long as that's "normal", it has to stay in
> the "normal" part of the regexp, and as soon as it's "special" it has
> to leave the "normal" part.  The intent is to eliminate any
> possibility for backtracking, thus ensuring predictable runtime and
> ensuring that no form of internal backtracking stack needs to be used
> (let alone hit its limit).

So how general is that? The books just says "certain common
expressions". I think the real answer is that one can unroll
exactly the true regular expressions. The unrolling is
essentially resolving the states of a DFA by hand.


-- 
--Bryan


From danielmarkhot at gmail.com  Fri Sep 22 10:56:21 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 22 Sep 2006 07:56:21 -0700
Subject: Does Python provide "Struct" data structure?
Message-ID: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>

Hello all:

I have found a useful module in IPython, named 'from IPython.ipstruct
import Struct".

So I can use it as follows:

####################################
from IPython.ipstruct import Struct

mystruct = Struct(echo = 1,
                      verb = 'Verbose',
                      filedir = 'C:/temp',
                      )

print mystruct.filedir
#####################################

I have two following questions:

1> Does Python provide such Struct in this standard libary.
Python has "4.3 struct -- Interpret strings as packed binary data", but
it looks like different
from what I really want to get.

2> Is it safe to use IPython's modules in my python program?
I will pack all my code into an executable application by using py2exe.
The clients would like to use this application without any python
intallation.
What should I pay attention if I include the IPython modules into my
python code and
convert it into executable application by using py2exe?

The setup.py for my application is as follows:
###########################################
from distutils.core import setup
import py2exe

options = {
    "bundle_files": 1,
    # "ascii": 1, # to make a smaller executable, don't include the
encodings
    "compressed": 1, # compress the library archive
    }

setup(
    # The first three parameters are not required, if at least a
    # 'version' is given, then a versioninfo resource is built from
    # them and added to the executables.
    version = "1.0",
    description = "mycode",
    name = "mycode",

    options = {"py2exe": options},
    zipfile = None, # append zip-archive to the executable.

    # targets to build
    console=['mycode.py'],
  )
###################################################

Does I need to make any modification if I include IPython module in my
code?

Thank you for your helps
-Daniel



From ptmcg at austin.rr._bogus_.com  Tue Sep 19 16:00:58 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Tue, 19 Sep 2006 20:00:58 GMT
Subject: py.test and HTML output
References: <mailman.294.1158695142.10491.python-list@python.org>
Message-ID: <_%XPg.6$nX4.2@tornado.texas.rr.com>

"Victor Ng" <crankycoder at gmail.com> wrote in message 
news:mailman.294.1158695142.10491.python-list at python.org...
> Is there documentation anywhere on how to get py.test to emit nice
> HTML output like the kind that they have for the PyPy project here:
> http://codespeak.net/~hpk/pypy-testresult/ ?
>
> Should I just redirect the stdout to a StringIO and parse the output
> and generate the HTML myself?  I see that there's a htmlreport.py in
> pypy, but I'm not sure how to use it.
>

At PyCon in February, there was a presentation (lightning talk perhaps?) of 
HTMLTestRunner (http://tungwaiyip.info/software/), that sounds like it does 
much as you want.  It took me about 3 minutes to integrate with my pyparsing 
unit tests, and it is a lot neater-looking than the unittest module's 
TextTestRunner.

-- Paul




From sjmachin at lexicon.net  Tue Sep  5 21:46:12 2006
From: sjmachin at lexicon.net (John Machin)
Date: 5 Sep 2006 18:46:12 -0700
Subject: Unicode string handling problem (revised)
In-Reply-To: <jd9sf2pb4mg9j6bc0usqhu3vbd5l2ic17r@4ax.com>
References: <jd9sf2pb4mg9j6bc0usqhu3vbd5l2ic17r@4ax.com>
Message-ID: <1157507172.189315.245320@h48g2000cwc.googlegroups.com>


Richard Schulman wrote:
[snip]
>     in_line = in_file.readline()
[snip]

We'd already deduced that that line was incorrectly published.
Please don't start new threads like this; if you want to make a
correction, do a couple-of-lines reply to your original message.
Now please leave this new thread alone, and reply to the
much-more-meaningful questions in the original thread.



From ldo at geek-central.gen.new_zealand  Thu Sep 28 19:50:23 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 11:50:23 +1200
Subject: Recursive descent algorithm able to parse Python?
References: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>
	<4o2ugcFcm4npU1@uni-berlin.de>
Message-ID: <efhn24$fia$1@lust.ihug.co.nz>

In message <4o2ugcFcm4npU1 at uni-berlin.de>, Diez B. Roggisch wrote:

> seberino at spawar.navy.mil schrieb:
>> I'm a compiler newbie and curious if Python grammar is able to
>> be parsed by a recursive descent parser or if it requires
>> a more powerful algorithm.
> 
> I might be mistaken, but isn't recursive descent one of the more
> powerful parsing techniques - for the price of non-linearity and even
> potentially non-termination?

No, you're thinking of LR(k) bottom-up parsers. Recursive descent is a
top-down parser--might be the same thing as LL(1), I'm not sure. It's easy
to implement and easy to understand, to the point where there is strong
pressure on programming-language designers to make sure their languages can
be parsed with recursive descent.


From tim at tdw.net  Thu Sep 28 14:33:57 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 28 Sep 2006 19:33:57 +0100
Subject: using the email module
In-Reply-To: <G53560589.848.1.1@mx-extra>
References: <G53560589.848.1.1@mx-extra>
Message-ID: <9afea2ac0609281133o37c8d404kd3726e25d7410c51@mail.gmail.com>

On 28/09/06, Erik Johnson <ej <at at bag.python.org>wellkeeper dot
<"com>"@bag.python.org> wrote:

> #!/usr/bin/env python
>
> import smtplib
> from email.MIMEText import MIMEText
> from email.MIMEMultipart import MIMEMultipart
>
>
> # GLOBAL DATA
> #=============
> MAIL_SERVER  = 'your_server.com'
> MAIL_SUBJECT = "Python.SMTP email test"
> MAIL_TO      = 'your_addr at example.com'
> MAIL_FROM    = "Python.SMTP email test"
>
>
> # Create a text/plain message
>
> Body = """\
> This is intended to be the body of my email. The HTML below should not
> be seen directly in the body but should be a separate attachment.
> """
>
> msg = MIMEMultipart()
> msg['Subject'] = MAIL_SUBJECT
> msg['From']    = MAIL_FROM
> msg['To']      = MAIL_TO
> msg.preamble   = Body
>
>
> html = """\
> <html>
> <head>
>   <title>Sample HTML File</title>
> </head>
>
> <body>
>   <h1>Can you see this?</h1>
>   <p>This is a short paragraph.</p>
> </body>
>
> </html>
> """

html_part = MIMEText(html, _subtype='html')
html_part.add_header('Content-Disposition', 'attachment',
filename='my_text.html')
msg.attach(html_part)

># msg.attach(MIMEText(html, 'html'))
> # print msg.as_string()
>
>
> # Send the message via our own SMTP server, but don't include the
> # envelope header.
> smtp = smtplib.SMTP(MAIL_SERVER)
> smtp.sendmail(MAIL_FROM, [MAIL_TO], msg.as_string())
> smtp.close()
> # end of python script
>


From thorsten at thorstenkampe.de  Thu Sep 14 12:26:20 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Thu, 14 Sep 2006 17:26:20 +0100
Subject: Newbie - ? get IDLE going on cygwin
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>	<mailman.20.1158149440.10491.python-list@python.org>	<NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>
	<mailman.46.1158171607.10491.python-list@python.org>
	<wr4Og.943$TV3.904@newssvr21.news.prodigy.com>
Message-ID: <18p8o1jituaus$.ttuazkwrocia.dlg@40tude.net>

* David J. Braden (2006-09-14 04:58 +0100)
> Jason Tishler wrote:
>> Dave,
>> 
>> On Wed, Sep 13, 2006 at 03:33:01PM +0000, David J. Braden wrote:
>>> I can now confirm that, yes, IDLE pops up w/o menus under cygwin.
>> 
>> You should be able to workaround this problem by executing idle with the
>> "-n" option:
>> 
>>     $ idle -n
> 
> Worked great. This "exercise" has also raised my comfort level with the 
> whole endeavor. To get rebaseall going, I was told to install the 
> *entire* cygwin package.

Sorry, but that's nonsense. The only things you need for rebase are
rebase and ash. You shouldn't install everything if you plan to use
just a fraction...


From fredrik at pythonware.com  Fri Sep 29 10:34:58 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 16:34:58 +0200
Subject: Pysqlite tables in RAM
In-Reply-To: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
References: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
Message-ID: <efjauh$b09$1@sea.gmane.org>

Ranjitha wrote:

> I want to store my data in a database on the disk. I also want to be
> able to reload the tables into the RAM whenever I have a lot of disk
> accesses and commit the changes back to the database.

using the cache_size and synchronous pragmas sounds like a better way to 
trade reliability against speed/memory use.  e.g.

table_memory = 100000000 # bytes
cur.execute("pragma cache_size = %d;" % (table_memory / 1500))

...

cur.execute("pragma synchronous = off;")
# do lots of stuff
cur.execute("pragma synchronous = full;")

for more on this, see: http://www.sqlite.org/pragma.html

</F>



From chris at simplistix.co.uk  Mon Sep 11 02:04:17 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 07:04:17 +0100
Subject: Problems with email.Generator.Generator
Message-ID: <4504FC61.5090801@simplistix.co.uk>

Hi All,

The following piece of code is giving me issues:

from email.Charset import Charset,QP
from email.MIMEText import MIMEText
charset = Charset('utf-8')
charset.body_encoding = QP
msg = MIMEText(
     u'Some text with chars that need encoding: \xa3',
     'plain',
     )
msg.set_charset(charset)
print msg.as_string()

Under Python 2.4.2, this produces the following output, as I'd expect:

MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="utf-8"

Some text with chars that need encoding: =A3

However, under Python 2.4.3, I now get:

Traceback (most recent call last):
   File "test_encoding.py", line 14, in ?
     msg.as_string()
   File "c:\python24\lib\email\Message.py", line 129,
in
as_string
     g.flatten(self, unixfrom=unixfrom)
   File "c:\python24\lib\email\Generator.py", line 82,
in flatten
     self._write(msg)
   File "c:\python24\lib\email\Generator.py", line 113,
in _write
     self._dispatch(msg)
   File "c:\python24\lib\email\Generator.py", line 139,
in
_dispatch
     meth(msg)
   File "c:\python24\lib\email\Generator.py", line 182,
in
_handle_text
     self._fp.write(payload)
UnicodeEncodeError: 'ascii' codec can't encode
character
u'\xa3' in position 41:
  ordinal not in range(128)

This seems to be as a result of this change:

http://svn.python.org/view/python/branches/release24-maint/Lib/email/Generator.py?rev=42272&r1=37910&r2=42272

...which is referred to as part of a fix for this bug:

http://sourceforge.net/tracker/?func=detail&aid=1409455&group_id=5470&atid=105470

Now, is this change to Generator.py in error or am I doing something wrong?

If the latter, how can I change my code such that it works as I'd expect?

cheers,

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From jon+usenet at unequivocal.co.uk  Mon Sep 25 12:17:18 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 16:17:18 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>
	<mailman.581.1159200379.10491.python-list@python.org>
Message-ID: <slrnehg086.7sa.jon+usenet@snowy.squish.net>

In article <mailman.581.1159200379.10491.python-list at python.org>, Fredrik Lundh wrote:
>> It's up to me to decide whether or not an argument is good enough to
>> convince me, thank you very much.
> 
> not if you expect anyone to take anything you say seriously.

Now you're just being ridiculous. In this thread you have been rude,
evasive, insulting, vague, hypocritical, and have failed to answer
substantive points in favour of sarcastic and erroneous sniping - I'd
suggest it's you that needs to worry about being taken seriously.


From sanxiyn at gmail.com  Mon Sep 18 23:59:31 2006
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Tue, 19 Sep 2006 12:59:31 +0900
Subject: Using sys.executable
Message-ID: <5b0248170609182059x12f92d23l98d62bf71eb979a3@mail.gmail.com>

Following Elliot's advice, I changed my scripts to use sys.executable
instead of hardcoding the path. Also in SVN.

# in run_tests.py
import os, sys
os.putenv('PYTHON', sys.executable)

# in shell scripts
$PYTHON alltests.py

-- 
Seo Sanghyeon


From kelemen at inf.elte.hu  Wed Sep 20 07:00:06 2006
From: kelemen at inf.elte.hu (kelemen.viktor)
Date: 20 Sep 2006 04:00:06 -0700
Subject: jpype package, could be path problem
References: <1158743920.654022.297190@k70g2000cwa.googlegroups.com>
	<1158745981.761814.251580@h48g2000cwc.googlegroups.com>
Message-ID: <1158750006.130994.241360@d34g2000cwd.googlegroups.com>

Hi

thanks for your suggestions

ive modified the sample code

"
import jpype
from jpype import *

jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
java.lang.System.out.println("hello world")
shutdownJVM()
"

and its working. It seems to be quite strange.
What would be the difference between the two import?

Viktor


Rob Wolfe wrote:
> Consider this:
>
> # bad style (potential name clash)
> from jpype import *
> startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
>
> # that's better
> import jpype
> jpype.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
>
> # for long names of modules
> import jpype as jp
> jp.startJVM('/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/client/libjvm.so','-ea')
>
> And see this:
> http://docs.python.org/tut/node8.html
> 
> HTH,
> Rob



From fccoelho at gmail.com  Wed Sep 27 13:45:42 2006
From: fccoelho at gmail.com (Flavio)
Date: 27 Sep 2006 10:45:42 -0700
Subject: f2py on windows tutorials
In-Reply-To: <mailman.812.1159377587.10491.python-list@python.org>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
	<mailman.504.1159044688.10491.python-list@python.org>
	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>
	<mailman.730.1159299369.10491.python-list@python.org>
	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>
	<efcddb$itm$1@sea.gmane.org>
	<mailman.753.1159314004.10491.python-list@python.org>
	<1159364285.218632.35040@h48g2000cwc.googlegroups.com>
	<mailman.812.1159377587.10491.python-list@python.org>
Message-ID: <1159379142.839788.239930@k70g2000cwa.googlegroups.com>

Hi Robert,

Putting the .pyf first didn't do any good. I still get the same error
message of unknown file type

However when I try to compile with f2py, all works perfectly! here is
the command I used:

f2py -c flib.pyf flib.f --compiler=mingw32 --fcompiler=gnu

Note: if I use mingw instead of mingw32  it does not work!!

So all that remains now is to be able to do it from the setup.py...

thanks again...

Robert Kern wrote:
> Flavio wrote:
> > Ok,
> >
> > I tried that and it seems we are making progress
> >
> > so here is my command:
> >
> > python setup.py build_ext --compiler=mingw32 --fcompiler=gnu
> >
> > Now it is complaining about my pyf!!
> >
> > error: unknown file type '.pyf'
> >
> > here is my setup .py:
> >
> > import setuptools, os
> > from numpy.distutils.core import setup, Extension
> >
> > #Configuring Build
> > libs=[];libdirs=[];f2pyopts=[]
> > if os.name == 'nt':
> >     f2pyopts.extend(["--compiler=mingw32","--fcompiler=gnu"])
>
> These don't belong here. If you don't want to type them in at the command line,
> put them in a setup.cfg file next to your setup.py:
>
>
> [build_ext]
> compiler=mingw
> fcompiler=gnu
>
>
> (Note: "mingw", not "mingw32"!)
>
> > flib = Extension(name='flib',
> >                         libraries=libs,
> >                         library_dirs=libdirs,
> >                         f2py_options=f2pyopts,
> >
> > sources=['model-builder/Bayes/flib.f','model-builder/Bayes/flib.pyf',]
>
> The .pyf file needs to come first.
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From metaperl.etc at gmail.com  Sun Sep 24 15:37:16 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 24 Sep 2006 12:37:16 -0700
Subject: One program in different GUI Toolkits
In-Reply-To: <1159011106.418155.118660@m73g2000cwd.googlegroups.com>
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
	<1159011106.418155.118660@m73g2000cwd.googlegroups.com>
Message-ID: <1159126636.402693.231540@k70g2000cwa.googlegroups.com>

Actually due to lack of documentation and feedback from the mailing
list, I am fallen out of love with Pythoncard and in love with
Kiwi/Pygtk. Given the large groundswell support for pygtk, i dont think
I will be disappointed.

PyQT looks ultra-slick, but the commercial nature of QT and the design
tools gives me an icky feeling.

metaperl wrote:
> Franz Steinhaeusler wrote:
> > Hello NG,
> >
> > I have a suggestion.
> >
> > For simplifying learning or switching between different GUI
> > Toolkits, I could imagine to have one short clearly presented
> > program in different GUI Toolkits.
>
> >
> > Anybody is interested in implementing in one other GUI?
> > We could put in on one Python wiki page for example.
> >
>
> Thanks to your post, I have fallen in love with PythonCard. I would be
> happy to try to implement what you want in that.



From meyer at acm.org  Mon Sep 11 09:52:29 2006
From: meyer at acm.org (Andre Meyer)
Date: Mon, 11 Sep 2006 15:52:29 +0200
Subject: best small database?
In-Reply-To: <f4cc03640609110629p57900f59ve4163eeef6050e2a@mail.gmail.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<f4cc03640609110629p57900f59ve4163eeef6050e2a@mail.gmail.com>
Message-ID: <7008329d0609110652l3347de4eqad6b2422dc8b37ff@mail.gmail.com>

buzhug is a nice one: http://buzhug.sourceforge.net/ (not sure about
binaries, though).

greetings
Andre


On 9/11/06, km <srikrishnamohan at gmail.com> wrote:
>
> checkout gadfly database.
> regards,
> KM
>
>
> On 9/11/06, David Isaac <aisaac0 at verizon.net> wrote:
> >
> > I have no experience with database applications.
> > This database will likely hold only a few hundred items,
> > including both textfiles and binary files.
> >
> > I would like a pure Python solution to the extent reasonable.
> >
> > Suggestions?
> >
> > Thank you,
> > Alan Isaac
> >
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> >
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
>


-- 
Dr. Andre P. Meyer                        http://python.openspace.nl/meyer
TNO Defence, Security and Safety          http://www.tno.nl/
Delft Cooperation on Intelligent Systems  http://www.decis.nl/

Ah, this is obviously some strange usage of the word 'safe' that I wasn't
previously aware of. - Douglas Adams
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From uriel.katz at gmail.com  Sun Sep 10 08:44:24 2006
From: uriel.katz at gmail.com (urielka)
Date: 10 Sep 2006 05:44:24 -0700
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
Message-ID: <1157892264.168364.13090@h48g2000cwc.googlegroups.com>

use Eclipse!!!
it is not a editor but it is the best free IDE out there.
for python use Pydev(pydev.sf.net) plugin:it got
EVERYTHING:completteion,debuging(with thread support)you can`t work
without a debugger for serious projects.
for Web Develop use Aptana(aptana.com) another plugin for eclipse,in
eairly stages but it is very amazing support most of open source
javascript library with auto-complete and outline of code.
Scribes look very nice for a editor i will try it for lightweight
editing.



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 04:40:06 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 09:40:06 +0100
Subject: best way of testing a program exists before using it?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B42E@vogbs009.gb.vo.local>

[Nick Craig-Wood]

| Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
| >          if os.path.isfile (filepath):
| >            print filepath
| 
| You might get a more accurate result using
| 
|   os.access(filepath, os.X_OK)
| 
| instead of
| 
|   os.path.isfile(filepath)
| 
| Which checks the file is executable

Sadly, not under Win32, hence the shenanigans with
the PATHEXT variable :)

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
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From john at castleamber.com  Sun Sep 10 12:20:56 2006
From: john at castleamber.com (John Bokma)
Date: 10 Sep 2006 16:20:56 GMT
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
	<1157892264.168364.13090@h48g2000cwc.googlegroups.com>
Message-ID: <Xns983A737104599castleamber@130.133.1.4>

"urielka" <uriel.katz at gmail.com> wrote:

> use Eclipse!!!

Q: how can I do x with A
A: use B!!! OMG LOLLZZ111!!!11eleven


-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From cliff at develix.com  Wed Sep 13 17:25:01 2006
From: cliff at develix.com (Cliff Wells)
Date: Wed, 13 Sep 2006 14:25:01 -0700
Subject: Python blogging software
In-Reply-To: <1158160960.920246.107630@b28g2000cwb.googlegroups.com>
References: <1158132558.3622.29.camel@devilbox>
	<mailman.7.1158132885.10491.python-list@python.org>
	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>
Message-ID: <1158182701.3622.59.camel@devilbox>

On Wed, 2006-09-13 at 08:22 -0700, Fuzzyman wrote:
> Cliff Wells wrote:
> > On Wed, 2006-09-13 at 00:29 -0700, Cliff Wells wrote:
> >
> > > Anyone aware of any functional (doesn't need to be complete, beta is
> > > fine) blog software written in Python?
> >
> > Hmph.  And as soon as I hit send I find
> >
> >  http://wiki.python.org/moin/PythonBlogSoftware
> >
> > Okay, so is there any *not* on that list that should be considered (and
> > perhaps added to the list)?
> 
> Firedrop2 is a client-side blog program (generates static HTML to be
> uploaded to your webserver).

I looked at this but didn't care for it as it doesn't appear to allow
for comments (feature-wise it's a few steps down from Frog, which I
already have working).

For anyone who's interested, what I finally settled on was Bitakora.  It
violated one of my own requirements (it runs on Zope), but because it's
multiuser and quite featureful and modern, the tradeoff seemed worth it:
  
http://www.codesyntax.com/bitakora/about

I will say that installing it was something of a pain.  If the Zope guys
want to know why Zope has been left behind, one of the first things I'd
suggest is to clean up zope.org.  Bitakora has several dependencies and
nearly all of the links to these dependencies led me on a wild goose
chase of broken links, multiple incompatible versions, incompatible
forks, etc.  

For those who might follow in my footsteps, the dependencies (with
correct links to correct versions) are:

Epoz: http://iungo.org/products/Epoz/
Localizer: http://www.ikaaro.org/localizer
TextIndexNG2: http://opensource.zopyx.biz/OpenSource/TextIndexNG
CookieCrumbler: http://hathawaymix.org/Software/CookieCrumbler

It also depends on BTreeFolder2, but that's included in the latest Zope
2.8 series.

I think the worst of all of these was surprisingly Epoz.  There are at
least three distinct branches of this product: the original
(deprecated), it's replacement (kupu), and a fork (which happens to be
the correct one).  The information on zope.org gives little indication
that there might be such a fork (but is quite happy to lead you in
circles).  I noticed that several of the products mentioned the pain of
maintaining software on zope.org (and so had moved their software
elsewhere), so this is probably the root of the problem.

Anyway, Zope complaints aside, Bitakora is really great and I'd
recommend that anyone looking for a friendly, multiuser blog take a
look.


Regards,
Cliff




From horpner at yahoo.com  Thu Sep 28 12:01:43 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 28 Sep 2006 18:01:43 +0200
Subject: Whither binary search?
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
	<y4fSg.1876$5i7.112@newsreading01.news.tds.net>
	<mailman.732.1159299946.10491.python-list@python.org>
	<1159305704.997567.250020@k70g2000cwa.googlegroups.com>
	<KGm*WNVrr@news.chiark.greenend.org.uk>
Message-ID: <slrnehnsg7.1j0.horpner@FIAD06.norwich.edu>

On 2006-09-28, Sion Arrowsmith <siona at chiark.greenend.org.uk> wrote:
> John Machin <sjmachin at lexicon.net> wrote:
>>Fredrik Lundh wrote:
>>> well, people tend to use dictionaries when they need to look things up
>>> quickly...
>>... like those paper dictionaries with the words in alphabetical order
>>:-)
>
> ... where you'll notice that the really big ones are divided up
> into buckets (which just happen to be keyed on initial letter).
>
> Truth is that humans are lot better than computers at general
> insertion sort, and its lookup equivalent, whereas computers
> are much better at calculating hashes. So we each use a
> dictionary implementation that plays to our strengths.

Thanks all, for the help.

In the end, perhaps prophetically, it turned out my data wasn't
really fully sorted after all. I put together a short function to
translate my raw data into a dictionary, and that was the end of
my problem.

-- 
Neil Cerutti


From aleax at mac.com  Sat Sep  9 13:25:35 2006
From: aleax at mac.com (Alex Martelli)
Date: Sat, 9 Sep 2006 10:25:35 -0700
Subject: What algorithm does Python use to evaluate: if substring in string
References: <eduhvs$46c$1@news.uit.no> <1hle0k3.1lialdlojudmaN%aleax@mac.com>
	<edulcd$53j$1@news.uit.no>
Message-ID: <1hle79j.1bba8pjpmzkihN%aleax@mac.com>

Tor Erik <torerik81 at gmail.com> wrote:

> Alex Martelli wrote:
> > Tor Erik <torerik81 at gmail.com> wrote:
> > 
> >> I would be surprised if it is the naive:
> > 
> > Yep -- it's "a mix between Boyer-Moore and Horspool with a few more
> > bells and whistles on the top", as documented and implemented in
> > Objects/stringlib/fastsearch.h in the Python sources and well discussed
> > and explained at http://effbot.org/zone/stringlib.htm .
> > 
> > 
> > Alex
> 
> Ok. Two questions:
> 
> 1. Is "a in b" simply an alias for "b.find(a)"?

The 'in' operator can be minutely better optimized, but they share the
underlying algorithm (in 2.5).

> 2. Is this algorithm exclusive to Python 2.5, or is it contained in 2.4
> aswell?

It's  2.5 novelty.  Look at the performance on the same machine (my 2.0
GHz MBP, MacOSX 10.4.7):

brain:~ alex$ python2.4 -mtimeit -s'x="foo";y="bar"*99+x+"baz"*77' 'x in
y'
100000 loops, best of 3: 9.04 usec per loop
brain:~ alex$ python2.4 -mtimeit -s'x="foo";y="bar"*99+x+"baz"*77'
'y.find(x)!=-1'
100000 loops, best of 3: 2.01 usec per loop
brain:~ alex$ python2.5 -mtimeit -s'x="foo";y="bar"*99+x+"baz"*77' 'x in
y'1000000 loops, best of 3: 0.452 usec per loop
brain:~ alex$ python2.5 -mtimeit -s'x="foo";y="bar"*99+x+"baz"*77'
'y.find(x)!=-1'
1000000 loops, best of 3: 0.842 usec per loop

find used to be way faster than 'in' -- now they share algorithms and
'in' can be more optimized (no need to track ``where'' it finds a match,
so to speak;-), so find is over twice as fast as it used to be, 'in' is
about 20 times as fast as it used to be, in this example -- it gets even
better if you look at larger and larger strings, e.g...:

brain:~ alex$ python2.4 -mtimeit -s'x="foo"*123;y="bar"*999+x+"baz"*777'
'x in y'
10000 loops, best of 3: 91.9 usec per loop
brain:~ alex$ python2.5 -mtimeit -s'x="foo"*123;y="bar"*999+x+"baz"*777'
'x in y'
100000 loops, best of 3: 3.01 usec per loop

here, we're going _30_ times as fast, not "just" 20;-).


Alex


From robert.kern at gmail.com  Sun Sep 24 18:34:41 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 24 Sep 2006 17:34:41 -0500
Subject: ruby %w equivalent
In-Reply-To: <4516FA3B.8020400@vo.lu>
References: <4516FA3B.8020400@vo.lu>
Message-ID: <ef715t$bi9$1@sea.gmane.org>

Antoine De Groote wrote:
> Hi everybody,
> 
> is there a python equivalent for the ruby %w operator?
> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...

I assume that

   ['a', 'b', 'c']

isn't what you are looking for. How does

   'a b c'.split()

strike you?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep 28 11:34:51 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 28 Sep 2006 17:34:51 +0200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<87zmckkfl2.fsf@benfinney.id.au>
	<mailman.872.1159436927.10491.python-list@python.org>
Message-ID: <slrnehnqsr.ann.sybrenUSE@schuimige.stuvel.eu>

Steve Holden enlightened us with:
> Otherwise you might as well say that any costs associated with using
> a piece of software (including purchase pricing) are "hostile to the
> wants of the user".

It's true. People pay because they have to, but they'd rather not.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From w.richert at gmx.net  Thu Sep 21 06:16:12 2006
From: w.richert at gmx.net (Willi Richert)
Date: Thu, 21 Sep 2006 12:16:12 +0200
Subject: Priority based concurrent execution
Message-ID: <200609211216.13037.w.richert@gmx.net>

Hi,

I have a simulation application (PlayerStage) in which the robot is asked 
every ~200ms for an action. In the meantime the robot has to do some 
calculation with the perception. As the calculation gets more and more time 
consuming I am thinking about outsourcing it into a concurrently running 
method. If the calculation takes too long it would be ok for the result to be 
incorporated in some future cycle of the main loop, resulting in the 
calculation being done less and less often and the main loop executing some 
stop behavior.
My question: Is there a possibility in Python (either with the threading 
module or with Twisted's non-threading style) to prioritize the two 
(pseudo-)concurrent methods so that the main tread is further on executed 
every ~200ms and the calculation thread being executed only in "idle" time 
slots?

Thanks,
wr


From simon at brunningonline.net  Fri Sep  8 06:15:31 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Fri, 8 Sep 2006 11:15:31 +0100
Subject: how do you get the name of a dictionary?
In-Reply-To: <1157707489.119939.136720@m79g2000cwm.googlegroups.com>
References: <1155926079.935209.21120@p79g2000cwp.googlegroups.com>
	<1156281268.865624.302070@b28g2000cwb.googlegroups.com>
	<mailman.9666.1156281679.27775.python-list@python.org>
	<1156283135.985893.186500@m73g2000cwd.googlegroups.com>
	<mailman.9668.1156283600.27775.python-list@python.org>
	<1156284812.469380.274370@b28g2000cwb.googlegroups.com>
	<mailman.9686.1156315895.27775.python-list@python.org>
	<1156350580.363393.256730@74g2000cwt.googlegroups.com>
	<mailman.9713.1156351048.27775.python-list@python.org>
	<1157707489.119939.136720@m79g2000cwm.googlegroups.com>
Message-ID: <8c7f10c60609080315x746098b9vf0fef59168bd3b62@mail.gmail.com>

On 8 Sep 2006 02:24:49 -0700, MonkeeSage <MonkeeSage at gmail.com> wrote:
> I guess I don't get the problem with the OP's request, either. There is
> already a name<->identifier mapping in place for objects.

Do you mean a name<->object mapping?

This, I think, isn't true. There is a name->object mapping, but to
make that a name<->object mapping *would* carry an overhead. It might
(or might not) be a *small* overhead, but since every single Python
program would suffer the consequences, it's just not worth it.
Especially, as others have pointed out, that it wouldn't really be
very useful at all.

-- 
Cheers,
Simon B,
simon at brunningonline.net


From bryce.bolton at gmail.com  Thu Sep 21 02:08:24 2006
From: bryce.bolton at gmail.com (Bryce Bolton)
Date: Wed, 20 Sep 2006 23:08:24 -0700
Subject: pexpect baudrate and mode settings
Message-ID: <e23133680609202308v7f8d2e7eo7ca41c6df2935f91@mail.gmail.com>

Hi,

I've written a short script in pexpect to open the serial port and get 100
bytes.  The script does receive a string of garbage, but not the good text
seen when I open a minicom terminal and look at ttyS0.

I know that the baud rate is wrong, and the other settings (such as 8N1) are
unknown to me and may also be wrong.


Question: In Linux, how do I set the baud rate = 19200, 8N1 in pexpect
scenario?  (this example is close to the pexpect documentation, but I used
the fdpexpect.fdspawn extension because pexpect.spawn didn't work.

#!/bin/python
import pexpect
import os
import fdpexpect
fd = os.open("/dev/ttyS0", os.O_RDWR|os.O_NONBLOCK|os.O_NOCTTY )
m = fdpexpect.fdspawn(fd) # Note integer fd is used instead of usual string.
m.send("+++") # Escape sequence
m.send("ATZ0\r") # Reset modem to profile 0
string1 = m.read(100)
print "%s" % string1


Would the baudrate setup be similiar under windows?  Any examples out there?

In short, setting of critical parameters is unclear under pexpect's
documentation, but may be obvious to those more familiar with os.open or
other filesystem internals.

Thanks,
Bryce
-------------- next part --------------
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From damian at nice.co.nz  Thu Sep 28 15:43:33 2006
From: damian at nice.co.nz (Damian)
Date: 28 Sep 2006 12:43:33 -0700
Subject: XSLT speed comparisons
In-Reply-To: <mailman.884.1159454850.10491.python-list@python.org>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<451BD332.1080505@websafe.com>
	<mailman.884.1159454850.10491.python-list@python.org>
Message-ID: <1159472613.752273.139980@m7g2000cwm.googlegroups.com>

Ahhhh, thanks for that, I've been searching the documentation and it
only briefly mentions XSLT but it sounds like a half-arsed attempt.



From duncan.booth at invalid.invalid  Sat Sep 30 13:23:52 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 30 Sep 2006 17:23:52 GMT
Subject: Escapeism
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>
	<slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>
	<1159635727.840033.169540@m73g2000cwd.googlegroups.com>
Message-ID: <Xns984EBB245BA4Aduncanbooth@127.0.0.1>

"Kay Schluehr" <kay.schluehr at gmx.net> wrote:

>> try "print repr(c)".
> 
> This yields the hexadecimal representation of the ASCII character and
> does not simply echo the keystrokes '\' and 'a' for '\a' ignoring the
> escape semantics.

But you yourself noted earlier that '\a' and '\x07' are the same string
and said: 

> But lets weaken the requirement and fix a canonical representation in
> case of ambiguity.

That's exactly what repr(c) does, it uses a canonical representation
with '\t', '\r', '\n', '\\', (and when it has to "\'", '\"') using the 
short escape form (because they are so commonly used), and the all the 
other (more obscure) escape sequences using the hexadecimal form.

BTW, c.encode('string_escape') is another way to convert a string to almost 
the same escaped form (except for a minor difference in the treatment of 
quote characters).

> But unfortunately "rawrification" applies only to string literals and
> not to string objects ( such as c ).

Oh dear, the fact that you could even consider writing that sentence seems 
to show a fundamental misunderstanding of what a raw string literal means.


From george.sakkis at gmail.com  Thu Sep  7 20:12:02 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 7 Sep 2006 17:12:02 -0700
Subject: Negation in regular expressions
Message-ID: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>

It's always striked me as odd that you can express negation of a single
character in regexps, but not any more complex expression. Is there a
general way around this shortcoming ? Here's an example to illustrate a
use case:

>>> import re
# split with '@' as delimiter
>>> [g.group() for g in re.finditer('[^@]+', 'This @ is a @ test ')]
['This ', ' is a ', ' test ']

Is it possible to use finditer to split the string if the delimiter was
more than one char long (say 'XYZ') ? [yes, I'm aware of re.split, but
that's not the point; this is just an example. Besides re.split returns
a list, not an iterator]

George



From this at is.invalid  Thu Sep  7 12:31:17 2006
From: this at is.invalid (ddtl)
Date: Thu, 07 Sep 2006 18:31:17 +0200
Subject: Method resolution for super(Class, obj).
Message-ID: <49h0g2t0rni9mk4gs3o8baqgr66q1847es@4ax.com>

Hello everybody.

Consider the following code:


class A(object):
    def met(self):
        print 'A.met'
class B(A):
    def met(self):
        print 'B.met'
        super(B,self).met()
class C(A):
    def met(self):
        print 'C.met'
        super(C,self).met()
class D(B,C):
    def met(self):
        print 'D.met'
        super(D,self).met()
d = D()
d.met()


When executed, it prints:

D.met
B.met
C.met
A.met

The book (Python in a nutshell, 2nd edition) explains:

"The solution is to use built-in type super. super(aclass, obj), 
which returns a special superobject of object obj. When we look 
up an attribute (e.g., a method) in this superobject, the lookup 
begins after class aclass in obj's MRO."

But I don't understand - MRO means that when attribute is found 
somewhere in hierarchy, the search for it stops, that is: when 
d.met() is executed, it is supposed to print 'D met', call 
super(D,self).met() which should resolve met() to be B's attribute, 
and after B's met() is executed, we should be done. Why does the 
lookup proceeds from B to C as though met() wasn't found in B? 
Indeed, lookup order (according to a new-style MRO) is B, then C 
and at last A (because of a diamond inheritance), but only when 
attribute is not found in B it is looked up in C, and only if it 
is not found neither in B nor in C it is looked up in A...

What is different here?

ddtl.


From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep  5 18:38:17 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Wed, 6 Sep 2006 00:38:17 +0200
Subject: [Article] OpenOffice.org and Python
Message-ID: <slrnefrv2p.9pc.sybrenUSE@schuimige.stuvel.eu>

Hi folks!

The two small snippets I wrote two days ago were well received.  With
the danger of being called a hero I proceded and wrote a proper
article about OpenOffice.org and Python.

It contains the following sections:

    * Preparation
    * Gaining access to a document
    * Getting to the data
    * Converting from/to Excel or to PDF
    * Processing all files in a directory
    * Automatically starting OOo
    * More information

Please post feedback here or on my website at
http://www.stuvel.eu/archive/31

Enjoy the article at http://www.stuvel.eu/ooo-python

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From polychrom at softhome.net  Sat Sep 23 09:26:21 2006
From: polychrom at softhome.net (mistral)
Date: 23 Sep 2006 06:26:21 -0700
Subject: Need compile python code
In-Reply-To: <4nknl9Far902U1@individual.net>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
Message-ID: <1159017981.328823.218410@h48g2000cwc.googlegroups.com>


Bjoern Schliessmann ?????(?):

> mistral wrote:
>
> > Need compile python code, source is in html and starts with
> > parameters:
>
> Excuse me?
>
> > #!/bin/sh -
> > "exec" "python" "-O" "$0" "$@"
>
> Is the line break intended?
>
> > I have installed ActivePython for windows.
>
> What exactly do you want?
>
> Python code is always compiled (to byte code) before it's run.
>
> Regards,
>
>
> Bj?rn
>
> --

Just to comple python ode - it creates html page, nothing more, nothing
else.. Just generate one html page.

mistral



From alina.ghergu at gmail.com  Wed Sep  6 06:41:14 2006
From: alina.ghergu at gmail.com (Alina Ghergu)
Date: 6 Sep 2006 03:41:14 -0700
Subject: wxPython GUI update with data from a MySQL database
In-Reply-To: <1155807053.375687.15930@i3g2000cwc.googlegroups.com>
References: <1155807053.375687.15930@i3g2000cwc.googlegroups.com>
Message-ID: <1157539274.539144.74660@e3g2000cwe.googlegroups.com>


I solved the problem by using a more recent version of MySQLdb,
compatible with MySQL 5.0.



From aisaac0 at verizon.net  Mon Sep  4 10:01:37 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 04 Sep 2006 14:01:37 GMT
Subject: replace deepest level of nested list
Message-ID: <5lWKg.17116$CL6.8808@trnddc06>

I have a list of lists, N+1 deep.
Like this (for N=2):
[[['r00','g00','b00'],['r01','g01','b01']],[['r10','g10','b10'],['r11','g11'
,'b11']]]

I want to efficiently produce the same structure
except that the utlimate lists are replaced by a chosen (by index) item.
E.g.,
[['r00','r01'],['r10','r11']]

N is not known ahead of time.

Suggestions?

Thanks,
Alan Isaac




From gagsl-py at yahoo.com.ar  Wed Sep 20 19:09:37 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 20:09:37 -0300
Subject: "list index out of range" error
In-Reply-To: <1158791972.525026.113530@i3g2000cwc.googlegroups.com>
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
	<pan.2006.09.20.21.54.45.550086@gmx.net>
	<1158789483.004773.21840@k70g2000cwa.googlegroups.com>
	<1158791972.525026.113530@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060920195341.05861c70@yahoo.com.ar>

At Wednesday 20/9/2006 19:39, sam wrote:

>thanks again for your help. that sorted out something that had really
>been bugging me.

Now that your main problem is gone, just a few comments:
- python lists know their length, so you don't need explicit no_lines 
and no_lines_2
- list_initial.remove(temp_str) is fairly slow - it has to *scan* the 
list to locate temp_str. Just keep its index instead, and use del 
list_initial[index]
- as a general sorting routine, that 'zzz....' does not look very 
good, try to avoid it.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From no at spam.com  Tue Sep  5 01:42:56 2006
From: no at spam.com (Mike Krell)
Date: Tue, 05 Sep 2006 00:42:56 -0500
Subject: What are super()'s semantics?
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
	<mailman.10330.1157370811.27775.python-list@python.org>
Message-ID: <Xns9834E725ABE22kojaklikescheerios@144.162.164.191>

Maric Michaud <maric at aristote.info> wrote in
news:mailman.10330.1157370811.27775.python-list at python.org: 
 
> [examples snipped]
> 
> Hope this is clear.

Yes, I get it now.  In a prior section in "Nutshell", Alex M. goes over the 
MRO as well as the __mro__ attribute.  I remembered the fact that the 
__mro__ attribute can be referenced only on classes.  Somehow, this 
confused me into thinking that the operative MRO for each call to super() 
would be dictated by the class where the call was being made rather than by   
the single instance of D as specified by the second parameter.

   Mike   


From bignose+hates-spam at benfinney.id.au  Fri Sep 22 06:01:26 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 22 Sep 2006 20:01:26 +1000
Subject: Don't use regular expressions to "validate" email addresses
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au> <eevo5f$abu$1@sea.gmane.org>
	<mailman.442.1158902652.10491.python-list@python.org>
	<1158916433.621758.21640@m73g2000cwd.googlegroups.com>
Message-ID: <874pv0z0cp.fsf@benfinney.id.au>

"John Machin" <sjmachin at lexicon.net> writes:

> What proportion of deliverable e-mail addresses have more than one @
> in them?

I don't know. Fortunately, I don't need to; I don't "validate" email
addresses by regular expression.

What proportion of deliverable email addresses do you want to discard
as "not valid"?

-- 
 \       "Theology is the effort to explain the unknowable in terms of |
  `\                      the not worth knowing."  -- Henry L. Mencken |
_o__)                                                                  |
Ben Finney



From dale at riverhall.nospam.co.uk  Fri Sep 15 14:07:51 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Fri, 15 Sep 2006 19:07:51 +0100
Subject: PostgreSQL, psycopg2 and OID-less tables
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158338860.438887.303880@p79g2000cwp.googlegroups.com>
Message-ID: <YZBOg.2285$dL2.839@fe20.usenetserver.com>

Hi Harald

Thanks for that, somewhat comprehensive, answer.

-- 
Dale Strickland-Clark
Riverhall Systems - www.riverhall.co.uk



From george.sakkis at gmail.com  Wed Sep 27 11:18:00 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 27 Sep 2006 08:18:00 -0700
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <1159370280.794129.104190@i3g2000cwc.googlegroups.com>

Antoon Pardon wrote:

> What bothers me a bit about the rejection of PEP 326 is that one of the
> reasons stated is:
>
>   http://mail.python.org/pipermail/python-dev/2004-January/042306.html
>
>   - it is easily implemented when you really need it
>
> Well I thought it would simplify some things for me, so I tried an
> implementation and then found that some of the things that I would
> want to do with it wont work. So the "is easily implemented" bit
> seems not to be correct.

IIRC, the PEP proposed the Smallest and Largest singletons with the
sole purpose of being used in comparisons. No numeric behavior was
implied, i.e. Smallest and Largest are not negative and positive
infinity in the math sense of the word. So I guess the "easily
implemented" refers to this case alone.

George



From steve at holdenweb.com  Mon Sep 11 20:35:10 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 01:35:10 +0100
Subject: BaseHTTPServer weirdness
In-Reply-To: <rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>	<mailman.287.1158003082.5279.python-list@python.org>	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
Message-ID: <ee4vam$qcm$1@sea.gmane.org>

Ron Garret wrote:
> In article <mailman.294.1158010161.5279.python-list at python.org>,
>  Steve Holden <steve at holdenweb.com> wrote:
> 
> 
>>But basically, you aren't providing a CGI environment, and that's why 
>>cgi.parse() isn't working.
> 
> 
> Clearly.  So what should I be doing?  Surely I'm not the first person to 
> have this problem?
> 
> I have managed to work around this for now by copying and modifying the 
> code in cgi.parse, but this still feels like a Horrible Hack to me.
> 
Let me get this right. You are aware that CGIHTTPServer module exists. 
But you don't want to use that. Instead you want to use your own code. 
So you have ended up duplicating some of the functionality of the cgi 
library. And it feels like a hack.

Have I missed anything? :-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ldo at geek-central.gen.new_zealand  Mon Sep 25 19:09:58 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 11:09:58 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ef9nib$snj$1@lust.ihug.co.nz>

In message <slrnehg538.hi7.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Lawrence D'Oliveiro enlightened us with:
>>> An escaping function should be small and not do all kinds of
>>> escaping for different situations at once.
>>
>> Even when the two situations are related?
> 
> Yup, even then. Different situations need different escaping
> functions.

You're proposing two separate functions:

    1) quoting of non-wildcard specials
    2) quoting of wildcard specials

The trouble with this is that, instead of offering extra functionality, it
leaves the door open to making two stupid mistakes:

    1) quoting of wildcards WITHOUT quoting of non-wildcards
    2) quoting of wildcards BEFORE quoting of non-wildcards

There are only two non-stupid solutions to this problem that I can see.
Either:

  * A pair of functions that perform
    1) quoting of non-wildcard specials only
    2) quoting of both non-wildcard and wildcard specials

Or:

  * A single function that performs either of the above two operations,
    depending on a boolean flag--which is what QuoteSQL does.

I guess I don't have a strong preference for which way we do it, but I would
suggest confining our discussion to non-stupid solutions.


From userprogoogle-139 at yahoo.co.uk  Thu Sep 21 04:48:55 2006
From: userprogoogle-139 at yahoo.co.uk (rodmc)
Date: 21 Sep 2006 01:48:55 -0700
Subject: Python and CORBA
Message-ID: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>

Can anyone recommend an easy to install COBRA implementation which
works with Python? I am using Windows XP.

Thanks in advance.

Best,

rod



From sjmachin at lexicon.net  Tue Sep 26 21:43:25 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 18:43:25 -0700
Subject: releasing memory to malloc
In-Reply-To: <1159319835.249502.65220@i3g2000cwc.googlegroups.com>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
	<1159319835.249502.65220@i3g2000cwc.googlegroups.com>
Message-ID: <1159321405.372826.60130@k70g2000cwa.googlegroups.com>


iker.arizmendi at gmail.com wrote:
> I can, but the extension is only a thin wrapper around a general
> purpose C library which is also used independently of Python.
>

So change the library to use xmalloc etc and add something like this to
the .h file:

#ifdef PYMEM
#define xmalloc PyMem_Malloc
etc
#else
#define xmalloc malloc
etc
#endif



From thorsten at thorstenkampe.de  Sat Sep 30 15:01:57 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Sat, 30 Sep 2006 20:01:57 +0100
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <efm04n$lb3$1@mlucom4.urz.uni-halle.de>
	<mailman.1003.1159631137.10491.python-list@python.org>
Message-ID: <MPG.1f88cf81c13811a398968d@news.individual.de>

* Steve Holden (Sat, 30 Sep 2006 17:46:03 +0100)
> Mirco Wahab wrote:
> > Thus spoke Antoine De Groote (on 2006-09-30 11:24):
> Tim Peters frequently says something along the lines of "If you have a 
> problem and you try to solve it with regexes, then you have TWO 
> problems". 

It's originally from Jamie Zawinski:
'Some people, when confronted with a problem, think "I know, I'll use 
regular expressions." Now they have two problems.'

And the simple reason why Regular Expressions are not a part of the 
core Python language is that Regular Expressions are overrated. They 
are simply not the preferred tool for every kind of text manipulation 
and extraction.

Thorsten


From steve at holdenweb.com  Tue Sep 12 10:24:16 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 15:24:16 +0100
Subject: variable update
In-Reply-To: <ee6b4h$mor$2@sea.gmane.org>
References: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>
	<ee6b4h$mor$2@sea.gmane.org>
Message-ID: <ee6ft5$a3i$1@sea.gmane.org>

Fredrik Lundh wrote:
> km wrote:
> 
> 
>>Is there any handy untility for checking if  a variable is populated at 
>>runtime ?
> 
> 
> access it, and catch the NameError:
> 
>     try:
>         variable
>     except NameError:

In a function when accessing a not-yet-bound local variable you may also 
(as Fredrik knows but didn't bother to say) see an UnboundLocalError 
exception,

>         print "not defined"
>     else:
>         print "defined"
> 
> leaving variables undefined is usually bad style, though; if you can, 
> assign some value to it, and test for that value instead:
> 
>     variable = None
> 
>     ... lots of code that may assign to variable ...
> 
>     if variable is not None:
>         print "not defined"
> 
regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From javier_subervi at yahoo.com  Sun Sep 24 08:58:13 2006
From: javier_subervi at yahoo.com (Javier Subervi)
Date: Sun, 24 Sep 2006 05:58:13 -0700 (PDT)
Subject: PersistenceDict Question
Message-ID: <20060924125813.38571.qmail@web90303.mail.mud.yahoo.com>

Hi;
I'm trying to get a module to work in a Plone product. I am running Python 2.3.5. Here is the error I'm getting:

2006-09-23T14:11:43 ERROR(200) Zope Could not import Products.ExternalSiteCatalog
Traceback (most recent call last):
  File "/usr/local/zope/278/lib/python/OFS/Application.py", line 673, in import_product
    product=__import__(pname, global_dict, global_dict, silly)
  File "/usr/local/zope/instance2/Products/ExternalSiteCatalog/__init__.py", line 36, in ?
    from Products.ExternalSiteCatalog.tool import ExternalSiteCatalog
  File "/usr/local/zope/instance2/Products/ExternalSiteCatalog/tool.py", line 57, in ?
    from Products.ExternalSiteCatalog.content import ExternalSiteCatalogTaskProperties
  File "/usr/local/zope/instance2/Products/ExternalSiteCatalog/content/__init__.py", line 27, in ?
    import ExternalSiteCatalogTask
  File "/usr/local/zope/instance2/Products/ExternalSiteCatalog/content/ExternalSiteCatalogTask.py", line 32, in ?
    from persistent.dict import PersistentDict
ImportError: No module named persistent.dict

I find no "persistent.dict" anywhere. However, I do find a "PersistentDict.py", and it appears that it is not in my version of Python. I went ahead and added it, then rebooted my server since I couldn't figure out how to restart Python (please tell me how to do that). But my Zope still threw the same error. How do I deal with this?
TIA,
Javier 2
 		
---------------------------------
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From sjoerd at acm.org  Wed Sep 20 06:30:43 2006
From: sjoerd at acm.org (Sjoerd Mullender)
Date: Wed, 20 Sep 2006 12:30:43 +0200
Subject: test, please ignore
Message-ID: <45111853.2090307@acm.org>

This is a test message from your mailing list administrator.  Please ignore.

-- 
Sjoerd Mullender


From igor at mekensleep.com  Wed Sep 13 06:12:13 2006
From: igor at mekensleep.com (Igor Kravtchenko)
Date: Wed, 13 Sep 2006 12:12:13 +0200
Subject: os.name under Win32
In-Reply-To: <ed9kpp$305$1@sea.gmane.org>
References: <44F8514E.4030004@mekensleep.com> <ed9kpp$305$1@sea.gmane.org>
Message-ID: <4507D97D.7020400@mekensleep.com>

Hi again,

I get back to this old "thread".

sys.platform returns indeed "win32" under Windows.

os.name should return "posix" even under Windows if we are under Cygwin 
as Martin suggested.

Recently, someone advised me to use instead:
platform.system()

that returns only 3 different strings: Java, Linux or Windows.  End of 
story.

Is this not supposed to work better than sys.platform?
Indeed I'm pretty worried about having "win64" returned on further os 
like Windows Vista
and having our tests failing again.

Igor.



Fredrik Lundh wrote:

>Igor Kravtchenko wrote:
>
>  
>
>>We have an application using Python that is intended to work both under 
>>Win32 and Linux.
>>Since some parts of the code need to be different depending whether we 
>>are under Win32
>>or Linux, we use the traditional:
>>
>>if os.name == "posix":
>>  some Linux code
>>else:
>>  some Win32 code
>>    
>>
>
>the usual thing to test for is sys.platform, not os.name.
>
>    if sys.platform == "win32":
>        some win32 code (or win64 code)
>    else:
>        some linux code
>
>  
>
>>However, we have noticed that under some circumstances, in some cases, 
>>in some computers under Windows XP Family that the "posix" code was
>>    
>>
> > executed causing of course a crash.
>
>sounds weird.  have you checked your code so you don't assign to os.name 
>somewhere, by accident?
>
></F>
>
>  
>



From ilias at lazaridis.com  Wed Sep 27 08:29:48 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 27 Sep 2006 05:29:48 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <mailman.752.1159313702.10491.python-list@python.org>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<mailman.544.1159134982.10491.python-list@python.org>
	<1159295354.259058.52990@i42g2000cwa.googlegroups.com>
	<mailman.752.1159313702.10491.python-list@python.org>
Message-ID: <1159360188.483270.257080@k70g2000cwa.googlegroups.com>

Gabriel Genellina wrote:
> At Tuesday 26/9/2006 15:29, Ilias Lazaridis wrote:
>
> > >  >>> def f(obj):
> > >       print '    ' + repr(obj)
> > >
> > >  >>> sys.displayhook = f
> >
> >I've placed this code within /Lib/sitecustomize.py, but have one
> >strange result:
...
> > >>> t.sayHello()
> >Hello world
> >   : None

> >1st: "Hello world" comes still on the beginning.
> >2nd: I got this "None"

import sys
def f(obj):
    if obj:
        print '::: ' + repr(obj)
sys.displayhook = f

> The replacement should be a bit more complicated, taking None into
> account - see the original PEP for details
> http://www.python.org/dev/peps/pep-0217/
> And notice that this replaces the output of *evaluated* expressions,
> not any print statement executed inside your code.

Any simple solution for this?

I've looked a little at the code, but get immediately demotivated
seeing 72 files within a flat directroy:

http://svn.python.org/view/python/trunk/Lib/idlelib/?rev=52013

.

--
http://lazaridis.com



From polychrom at softhome.net  Sat Sep  2 09:57:43 2006
From: polychrom at softhome.net (mistral)
Date: 2 Sep 2006 06:57:43 -0700
Subject: How to run Python file?
Message-ID: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>

I have installed ActivePython
http://www.activestate.com/Products/ActivePython/
How I can run Python file, test.py?



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 09:54:52 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 14:54:52 +0100
Subject: Running python from a usb drive
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B43B@vogbs009.gb.vo.local>

[cjl]

| Any ideas about how to set file type associations without writing to
| the registry?

Well, yes. Just the same as was in the article you pointed
to... or have I missed something?

assoc .py=python.file
ftype python.file="c:\python24\python.exe" "%1" %*

(or whatever version of Python).

Obviously switching like this is prone to the difficulties
outlined there: if something crashes and you don't change
back, you're stuck until you change it back manually.

TJG

________________________________________________________________________
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From http  Sun Sep 24 17:07:12 2006
From: http (Paul Rubin)
Date: 24 Sep 2006 14:07:12 -0700
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
Message-ID: <7x8xk9t1mn.fsf@ruckus.brouhaha.com>

NinjaZombie <ninjazombie at net.hr> writes:
> I was wondering if it is possible to turn the current python proccess into
> a unix daemon, but not doing it like this: 
> python myscript.py & 
> but from code programaticaly.

Yeah, os.fork and the parent process exits.


From jeremy+complangpython at jeremysanders.net  Thu Sep 14 06:56:45 2006
From: jeremy+complangpython at jeremysanders.net (Jeremy Sanders)
Date: Thu, 14 Sep 2006 11:56:45 +0100
Subject: Force sleep to ignore interrupts
References: <1158230884.705465.17010@k70g2000cwa.googlegroups.com>
Message-ID: <eebchd$kb4$1@scorpius.csx.cam.ac.uk>

andychambers2002 at yahoo.co.uk wrote:

> It works as I want when used in the main application thread.
> That is, when you hit Ctr + C, it stops running.  However, if
> the class that subclasses it, also subclasses Thread, it breaks
> in that hitting Ctrl + C interrupts the call to sleep which puts
> the event loop out of sync with real time.

Maybe you could install a signal handler to ignore ctrl+c, when required

import signal
signal.signal(signal.SIGINT, signal.SIG_IGN)


-- 
Jeremy Sanders
http://www.jeremysanders.net/


From fred at osuosl.org  Fri Sep  8 21:24:48 2006
From: fred at osuosl.org (Frederic Wenzel)
Date: Fri, 8 Sep 2006 18:24:48 -0700
Subject: pyserial problem: script stops reading
Message-ID: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>

I wrote a script on Linux that uses pyserial to read status messages
from a serial line using readlines(). For now, it just displays what
it gets on stdout:

 17:42 | 0005 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:42 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:42 | 0001 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:43 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:43 | 0001 | 02 |   | 5  |Rack Abs.|  -  | --210
 17:43 | 0005 | 02 |   | 5  |Rack Abs.|  -  | --210
 17

After a few hours, or sometimes days, of listening, the script stops
in the middle of the line and does not display any further output (as
you can see with the "17" in the last line above). That happens, even
though I set a timeout of 10s when opening the line, and on timeout it
displays the lines and reopens the port:

ser = serial.Serial(port=1,
                                 baudrate=1200,
                                 rtscts=1,
                                 timeout=10)

while 1:
    lines = sh.readLines()
    for line in lines:
        print line
    ser.close()
    ser.open()

If the script does not time out there, I am not sure what else it is
doing. It seems to be in a wait state it does not get out of.

So even if the line received turned out to have some sort of error, I
think it should time out after a while? Maybe there is some sort of
buffer overrunning (even though the traffic is quite low: a line every
few minutes on average)?

Does anyone see any obvious error? Any hint how I can further debug the problem?

Thanks
Fred


From sjmachin at lexicon.net  Wed Sep 27 05:15:07 2006
From: sjmachin at lexicon.net (John Machin)
Date: 27 Sep 2006 02:15:07 -0700
Subject: Top and Bottom Values [PEP: 326]
In-Reply-To: <efde8s$o1c$2@lust.ihug.co.nz>
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efde8s$o1c$2@lust.ihug.co.nz>
Message-ID: <1159348507.367198.262530@i42g2000cwa.googlegroups.com>


Lawrence D'Oliveiro wrote:
> In message <slrnehk7ju.rcu.apardon at rcpc42.vub.ac.be>, Antoon Pardon wrote:
>
> > I need this Top value in
> > a context where it can be used as a start or stop value
> > in a slice.
>
> But the only valid values allowed for indices are 0 up to the length of the
> array inclusive. Larger integers are not allowed, so why should Top be
> allowed?

Larger integers are not allowed as subscripts, but slicing is more
tolerant:

| >>> array = ['a', 'b', 'c']
| >>> array[:1]
| ['a']
| >>> array[:2]
| ['a', 'b']
| >>> array[:3]
| ['a', 'b', 'c']
| >>> array[:4]
| ['a', 'b', 'c']
| >>> array[:987654321]
| ['a', 'b', 'c']

BTW, negative subscripts are allowed, too; see e.g.
http://docs.python.org/tut/node5.html#SECTION005140000000000000000

HTH,
John



From gagsl-py at yahoo.com.ar  Thu Sep 14 23:19:51 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 15 Sep 2006 00:19:51 -0300
Subject: Pre-defining an action to take when an expected error
  occurs
In-Reply-To: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
Message-ID: <7.0.1.0.0.20060915001635.03cb31b0@yahoo.com.ar>

At Thursday 14/9/2006 23:40, Tempo wrote:

>Hello. I am getting the error that is displayed below, and I know
>exactly why it occurs. I posted some of my program's code below, and if
>you look at it you will see that the error terminates the program
>pre-maturely. Becasue of this pre-mature termination, the program is
>not able to execute it's final line of code, which is a very important
>line. The last line saves the Excel spreadsheet. So is there a way to
>make sure the last line executes? Thanks in advanced for all of the
>help. Thank you.

You want a try/finally block.
Read the Python Tutorial: http://docs.python.org/tut/node10.html



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From MonkeeSage at gmail.com  Fri Sep 22 17:09:21 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 22 Sep 2006 14:09:21 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net>
Message-ID: <1158959361.458232.278660@h48g2000cwc.googlegroups.com>

Hi Saizan,

I don't really see anything wrong with creating a custom class for
evaluating those kinds of logical statements. It does make the code for
statements more concise and easy to follow (with less binding
ambiguity). Mabye something like this would help:

class logic(int):
  def __sub__(self):
    return logic(not self)
  def eval(self, statement):
    return bool(statement)
  def make_logical(self, *args):
    out = []
    for arg in args:
      out.append(logic(arg))
    return out

l = logic()
# init a buch of variables (or a list) at once
x, y, z = l.make_logical(True, False, True)
# or one at a time
v = logic(False)
# evaluate a statement
print l.eval((x and y) or (-z or -v)) # True

Regards,
Jordan



From jbngspam at yahoo.com  Wed Sep 20 22:59:35 2006
From: jbngspam at yahoo.com (John B)
Date: Thu, 21 Sep 2006 12:59:35 +1000
Subject: Need some help here
In-Reply-To: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <45120018_1@news.iprimus.com.au>

Kareem840 wrote:
> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.
> 
I accidentally sent $2, could you please refund the extra dollar to 
gagf at fubar.com.
No, thank you.


From steve at holdenweb.com  Thu Sep 28 07:13:11 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 12:13:11 +0100
Subject: Computer Language Popularity Trend
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <efgamk$j8p$1@sea.gmane.org>

Xah Lee wrote:
> Computer Language Popularity Trend
> 
> This page gives a visual report of computer languages's popularity, as
> indicated by their traffic level in newsgroups. This is not a
> comprehensive or fair survey, but does give some indications of
> popularity trends.
> 
> http://xahlee.org/lang_traf/index.html
> 
>   Xah
>   xah at xahlee.org
> ? http://xahlee.org/
> 
And not a single deletable expletive in sight. Good stuff!

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From robert.kern at gmail.com  Sun Sep 24 19:19:43 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 24 Sep 2006 18:19:43 -0500
Subject: Automatic import PEP
In-Reply-To: <1159139232.826655.141830@e3g2000cwe.googlegroups.com>
References: <mailman.491.1158981359.10491.python-list@python.org>
	<1159139232.826655.141830@e3g2000cwe.googlegroups.com>
Message-ID: <ef73qb$hlq$1@sea.gmane.org>

Saizan wrote:
> BTW what would the benefit of the form "lazily import A, B"? If you
> name the modules why not import them directly? Maybe you are not sure
> you would need them, but I don't think that the overhead of importing
> them should matter..

It's primarily useful for large packages. scipy used to have a mechanism of 
postponed imports because loading all of the extension modules in all of scipy's 
subpackages takes a fair bit of time. It especially hurts when you only wanted 
one. However, it is quite convenient to simply write "import scipy; 
scipy.linalg.eig(matrix)".

Nonetheless, we removed that feature and stopped importing all of the 
subpackages because the postponed import mechanism interfered with a number of 
other things (namely, getting docstrings through IPython's ? operator and making 
py2exe apps that use scipy). Having a third-party library do the same thing 
makes interactive use nice without burdening scipy with the problems.

So, "lazily import A" would make sense if A was a large package where all of the 
goodies are buried in A.C.D and A.E, A.X, A.Z, etc. You *do* know that you need 
A, but you may not know what you need underneath it.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From siona at chiark.greenend.org.uk  Thu Sep 28 11:18:24 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 28 Sep 2006 16:18:24 +0100 (BST)
Subject: Whither binary search?
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
	<y4fSg.1876$5i7.112@newsreading01.news.tds.net>
	<mailman.732.1159299946.10491.python-list@python.org>
	<1159305704.997567.250020@k70g2000cwa.googlegroups.com>
Message-ID: <KGm*WNVrr@news.chiark.greenend.org.uk>

John Machin <sjmachin at lexicon.net> wrote:
>Fredrik Lundh wrote:
>> well, people tend to use dictionaries when they need to look things up
>> quickly...
>... like those paper dictionaries with the words in alphabetical order
>:-)

... where you'll notice that the really big ones are divided up into
buckets (which just happen to be keyed on initial letter).

Truth is that humans are lot better than computers at general
insertion sort, and its lookup equivalent, whereas computers are much
better at calculating hashes. So we each use a dictionary
implementation that plays to our strengths.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From grahamd at dscpl.com.au  Wed Sep 27 07:45:06 2006
From: grahamd at dscpl.com.au (grahamd at dscpl.com.au)
Date: 27 Sep 2006 04:45:06 -0700
Subject: What's the best way to communicate between processes?
References: <1159346472.574859.64130@i42g2000cwa.googlegroups.com>
Message-ID: <1159357506.480444.82470@b28g2000cwb.googlegroups.com>

awmcclain.nospam at gmail.com wrote:
> I'm thinking about coding some sort of 'local notify server' in twisted
> (basically just listening to a socket and then passing the information
> to the IM bot), then connecting to it via a python socket in django and
> passing some serialized/pickled data.

Use the XML-RPC server gateway from Twisted on the server side. In
the Django web pages then use xmlrpclib module to initiate XML-RPC
requests to the server.

Graham



From roy at panix.com  Wed Sep 27 19:58:17 2006
From: roy at panix.com (Roy Smith)
Date: Wed, 27 Sep 2006 19:58:17 -0400
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
Message-ID: <roy-D89592.19581727092006@reader2.panix.com>

In article <1159368408.593970.110380 at k70g2000cwa.googlegroups.com>,
 "Michele Simionato" <michele.simionato at gmail.com> wrote:

> John Salerno wrote:
> > But what if you are an expert Python program and have zero clue about
> > other languages?
> 
> Python is not a trivial language (think of generators, decorators,
> metaclasses, etc)

This is, unfortunately, a sad commentary on the evolution of the language 
over the past few years.  One of the things that made Python so attractive 
was how simple it was, and yet powerful.

Things like decorators and metaclasses certainly add power, but they add 
complexity too.  It's no longer a simple language.


From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:16:24 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:16:24 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<mailman.633.1159251691.10491.python-list@python.org>
Message-ID: <efak2d$hbo$3@lust.ihug.co.nz>

In message <mailman.633.1159251691.10491.python-list at python.org>, Gabriel G
wrote:

> At Monday 25/9/2006 11:08, Jon Ribbens wrote:
> 
>> >> What precisely do you think it would "break"?
>> >
>> > existing code, and existing tests.
>>
>>I'm sorry, that's not good enough. How, precisely, would it break
>>"existing code"? Can you come up with an example, or even an
>>explanation of how it *could* break existing code?
> 
> FWIW, a *lot* of unit tests on *my* generated html code would break...

Why did you write your code that way?



From matianyi at legendapl.com.cn  Tue Sep 19 23:45:32 2006
From: matianyi at legendapl.com.cn (MaTianyi)
Date: Wed, 20 Sep 2006 12:45:32 +0900
Subject: how to control file output encoding?
Message-ID: <4510B95C.8030805@legendapl.com.cn>

the encoding of  file that is output by the file.write() function  is
always None.
and the encoding attribute of the File Object is readonly.

f = open('abc.txt','w')
print f.encoding
>>> None

how can I change the file output encoding?





From dannycolligan at gmail.com  Wed Sep 27 09:28:52 2006
From: dannycolligan at gmail.com (dannycolligan at gmail.com)
Date: 27 Sep 2006 06:28:52 -0700
Subject: iterator question
In-Reply-To: <mailman.795.1159357323.10491.python-list@python.org>
References: <mailman.716.1159290541.10491.python-list@python.org>
	<1159291272.617534.177790@h48g2000cwc.googlegroups.com>
	<1159292714.862469.228720@k70g2000cwa.googlegroups.com>
	<mailman.795.1159357323.10491.python-list@python.org>
Message-ID: <1159363732.689731.279070@k70g2000cwa.googlegroups.com>

Simple list comprehension?

>>> l = [1,2,3,4,5,6,7,8,9,0]
>>> [(x, x+1) for x in l if x%2 == 1]
[(1, 2), (3, 4), (5, 6), (7, 8), (9, 10)]

Danny

Neal Becker wrote:
> George Sakkis wrote:
>
> > johnzenger at gmail.com wrote:
> >
> >> def transform(seq, size):
> >>     i = 0
> >>     while i < len(seq):
> >>         yield tuple(seq[i:i+size])
> >>         i += size
> >
> > Or for arbitrary iterables, not just sequences:
> >
> > from itertools import islice
> > def transform(iterable, size):
> >      it = iter(iterable)
> >      while True:
> >          window = tuple(islice(it,size))
> >          if not window:
> > break
> >          yield window
> >
> > George
> > 
> 
> Thanks guys!
> 
> This one above is my personal favorite.



From polychrom at softhome.net  Mon Sep 25 17:56:04 2006
From: polychrom at softhome.net (mistral)
Date: 25 Sep 2006 14:56:04 -0700
Subject: Need compile python code
In-Reply-To: <m2wt7racpk.fsf@ordesa.lan>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
	<1159037322.895243.61950@i42g2000cwa.googlegroups.com>
	<1159038731.703945.18300@d34g2000cwd.googlegroups.com>
	<1159039498.616908.88550@d34g2000cwd.googlegroups.com>
	<1159042393.683184.111680@h48g2000cwc.googlegroups.com>
	<m2wt7racpk.fsf@ordesa.lan>
Message-ID: <1159221364.384331.137920@k70g2000cwa.googlegroups.com>


Piet van Oostrum ?????(?):

> >>>>> "MonkeeSage" <MonkeeSage at gmail.com> (M) wrote:
>
> >M> mistral wrote:
> >>> No, something is wrong there. what I need is just compile one python
> >>> file which will generate html page, with parameters:
> >>> "exec" "python" "-O" "$0" "$@"
> >>>
> >>> just need simple way do this(script is correct), i will not set any
> >>> patches anywhere, can i do this wrom normal GUI?
>
> >M> Hmmm... Are you talking about _RUNNING_ python scripts? Is that what
> >M> you mean by "compile" -- you mean execute? Is that what this broken
> >M> shell script means?
>
> >M> "exec" "python" "-O" "$0" "$@"
>
> >M> You don't need exec, the double quote on every word breaks it, and
> >M> passing $0 (which is the shell script itself) to python is sure to
> >M> break. Try this:
>
> I guess this is a trick to use a python script as a shell script that
> executes itself. In other words it is both a shell script and a python
> script and when executed as a shell script then it passes itself to the
> python interpreter. When executed as a python script the first line is a
> comment and the second line is a string (equal to 'execpython-O$0$@'), so
> both are skipped.
>
> You can't use that in windows, or maybe there is an equivalent trick.
> --
> Piet van Oostrum <piet at cs.uu.nl>
> URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
> Private email: piet at vanoostrum.org
-----------

anyway, this is a wrong and clumsy way writing of scripts, rather than
write clear and correct code comfortable to work.

mistral



From tony.bedford at gmail.com  Tue Sep 26 05:34:38 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 02:34:38 -0700
Subject: Surprise using the 'is' operator
Message-ID: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>

I thought the 'is' operator was used to identify identical objects,
whereas the '==' operator checked equality. Well, I got a surprise
here:

IDLE 1.1.3
>>> a = 10
>>> b = a
>>> a is b
True
>>> a == b
True
>>> c = 10
>>> a == c
True
>>> a is c
True
>>>

I was NOT expecting the last statement to return True!

What am I missing?

Thanks
Tony



From fredrik at pythonware.com  Fri Sep  1 03:38:24 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 09:38:24 +0200
Subject: pysqlite - simple problem
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
Message-ID: <ed8o1g$rs2$1@sea.gmane.org>

"rdrink" <rdrink at artic.edu> wrote:

>I am just getting into pysqlite (with a fair amount of Python and MySQL
> experience behind me) and have coded a simple test case to try to get
> the hang of things...
>
> yet have run into a 'stock simple' problem...

what does

    import sqlite
    print sqlite.paramstyle
    print sqlite.version

print on your machine ?

(afaik, version 1 of the python bindings use paramstyle=pyformat, version
2 uses qmark.  maybe you have a version 1 library ?)

</F> 





From p at ulmcnett.com  Fri Sep  8 18:38:55 2006
From: p at ulmcnett.com (Paul McNett)
Date: Fri, 08 Sep 2006 15:38:55 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157749692.092338.240820@m73g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<44fd309b$0$306$626a54ce@news.free.fr>	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
Message-ID: <4501F0FF.200@ulmcnett.com>

mensanator at aol.com wrote:
> Do you know what INNER JOIN means?
> 
> Do you know how important it is to a relational database?
> 
> Can you explain how an INNER JOIN can even work, in theory,
> with dynamic data types?

Let's stop the pissing contest and just see how it works. After all, 
this is Python and we can easily just try it out. Here's my example. 
Please tell me how this causes unexpected results, and why it isn't SQL. 
Please modify my example to get it to cause a catastrophe, and post it 
here so we can see the errors of our ways and be properly humbled.

#-- Preliminaries:
 >>> from pysqlite2 import dbapi2 as sqlite
 >>> con = sqlite.connect("test.db")
 >>> cur = con.cursor()

#-- Create 3 tables for a M:M relationship between customers
#-- and categories:
 >>> cur.execute("create table customers (id integer primary key 
autoincrement, name char)")
 >>> cur.execute("create table categories (id integer primary key 
autoincrement, name char)")
 >>> cur.execute("create table cust_cat (id integer primary key 
autoincrement, cust_id integer, cat_id integer)")

#-- Insert some test data into customer and categories:
 >>> cur.execute("insert into customers (name) values ('Ziggy Marley')")
 >>> cur.execute("insert into customers (name) values ('David Bowie')")
 >>> cur.execute("insert into categories (name) values ('Glam Rock')")
 >>> cur.execute("insert into categories (name) values ('Nuevo Reggae')")
 >>> cur.execute("insert into categories (name) values ('Male Singers')")
 >>> cur.execute("select * from customers")

#-- Take a look at the data (and retrieve the pk's):
 >>> cur.fetchall()
[(1, u'Ziggy Marley'), (2, u'David Bowie')]
 >>> cur.execute("select * from categories")
 >>> cur.fetchall()
[(1, u'Glam Rock'), (2, u'Nuevo Reggae'), (3, u'Male Singers')]

#-- Relate some customers to some categories. Note how I send strings
#-- in some places and ints in others:
 >>> cur.execute("insert into cust_cat (cust_id, cat_id) values (1, 3)")
 >>> cur.execute("insert into cust_cat (cust_id, cat_id) values (1, '2')")
 >>> cur.execute("insert into cust_cat (cust_id, cat_id) values ('2', '1')")
 >>> cur.execute("insert into cust_cat (cust_id, cat_id) values ('2', 3)")

#-- Run some queries:
 >>> cur.execute("select customers.id as cust_id, customers.name as 
cust_name, categories.id as cat_id, categories.name as cat_name from 
customers inner join cust_cat on cust_cat.cust_id = customers.id inner 
join categories on categories.id = cust_cat.cat_id order by 2,4")
 >>> cur.fetchall()
[(2, u'David Bowie', 1, u'Glam Rock'), (2, u'David Bowie', 3, u'Male 
Singers'), (1, u'Ziggy Marley', 3, u'Male Singers'), (1, u'Ziggy 
Marley', 2, u'Nuevo Reggae')]

 >>> cur.execute("select customers.id as cust_id, customers.name as 
cust_name, categories.id as cat_id, categories.name as cat_name from 
customers inner join cust_cat on cust_cat.cust_id = customers.id inner 
join categories on categories.id = cust_cat.cat_id where categories.id = 
1 order by 2,4")
 >>> cur.fetchall()
[(2, u'David Bowie', 1, u'Glam Rock')]

 >>> cur.execute("select customers.id as cust_id, customers.name as 
cust_name, categories.id as cat_id, categories.name as cat_name from 
customers inner join cust_cat on cust_cat.cust_id = customers.id inner 
join categories on categories.id = cust_cat.cat_id where categories.id = 
'1' order by 2,4")
 >>> cur.fetchall()
[(2, u'David Bowie', 1, u'Glam Rock')]

 >>> cur.execute("select customers.id as cust_id, customers.name as 
cust_name, categories.id as cat_id, categories.name as cat_name from 
customers inner join cust_cat on cust_cat.cust_id = customers.id inner 
join categories on categories.id = cust_cat.cat_id where categories.id = 
'2' order by 2,4")
 >>> cur.fetchall()
[(1, u'Ziggy Marley', 2, u'Nuevo Reggae')]

 >>> cur.execute("select customers.id as cust_id, customers.name as 
cust_name, categories.id as cat_id, categories.name as cat_name from 
customers inner join cust_cat on cust_cat.cust_id = customers.id inner 
join categories on categories.id = cust_cat.cat_id where categories.id = 
'3' order by 2,4")
 >>> cur.fetchall()
[(2, u'David Bowie', 3, u'Male Singers'), (1, u'Ziggy Marley', 3, u'Male 
Singers')]

 >>> cur.execute("select customers.id as cust_id, customers.name as 
cust_name, categories.id as cat_id, categories.name as cat_name from 
customers inner join cust_cat on cust_cat.cust_id = customers.id inner 
join categories on categories.id = cust_cat.cat_id where categories.id = 
3 order by 2,4")
 >>> cur.fetchall()
[(2, u'David Bowie', 3, u'Male Singers'), (1, u'Ziggy Marley', 3, u'Male 
Singers')]

If I have skipped the test case that will fail, please enlighten me.

-- 
Paul McNett
http://paulmcnett.com
http://dabodev.com



From larry.bates at websafe.com  Mon Sep 25 10:35:13 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 25 Sep 2006 09:35:13 -0500
Subject: Deprecation in String.joinfields()
In-Reply-To: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>
References: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>
Message-ID: <4517E921.70502@websafe.com>

Anoop wrote:
> Hi All,
> 
> I am getting the following error while trying to use deprecation
> 
> Please help
> 
>>>> li = ["a", "b", "mpilgrim", "z", "example"]
>>>> newname = string.joinfields (li[:-1], ".")
>>>> newname
> 'a.b.mpilgrim.z'
>>>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'joinfields'
> 
>>>> newname1 = string.join (li[:-1], ".")
>>>> newname1
> 'a.b.mpilgrim.z'
>>>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'join'
> 
> Thank you for your help
> 
> Anoop
> 
I think you want:

newname1='.'.join(li[:-1])

-Larry Bates


From __peter__ at web.de  Wed Sep 27 06:31:32 2006
From: __peter__ at web.de (Peter Otten)
Date: Wed, 27 Sep 2006 12:31:32 +0200
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <efdjr1$3c2$00$1@news.t-online.com>

Antoon Pardon wrote:

> I had written my own module, which works similarly but
> is somewhat extended. Here is an example of how it can
> be used and how I would like to use it but get stuck.
> 
> from extreme import Top
>>>> Top
> Top
>>>> Top + 1
> Top
>>>> Top - 30
> Top
>>>> Top > 1e99
> True
>>>> lst = range(10)
>>>> lst[:Top]
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: slice indices must be integers or None
> 
> So this is where I am stuck. I need this Top value in
> a context where it can be used as a start or stop value
> in a slice. My idea was that since a stop value greater
> than the length of lst in this context would simply return
> a copy of lst, using Top in such a way should behave so
> too. However I don't see a way of doing that.
> 
> So can someone provide ideas to get this behaviour?

>>> import sys
>>> class Top(object):
...     def __index__(self):
...             return sys.maxint
...
>>> Top = Top()
>>> range(5)[:Top]
[0, 1, 2, 3, 4]

This can of course fail in many interesting ways...

Peter




From sjdevnull at yahoo.com  Wed Sep 13 15:43:02 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 13 Sep 2006 12:43:02 -0700
Subject: eval(repr(object)) hardly ever works
In-Reply-To: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <1158176582.551703.271900@p79g2000cwp.googlegroups.com>

Matthew Wilson wrote:
> I understand that idea of an object's __repr__ method is to return a
> string representation that can then be eval()'d back to life, but it
> seems to me that it doesn't always work.

Just to reinforce something Skip mentioned:

If you're looking for a way to serialize an object into a string, and
then later turn that string back into an object, you probably want the
pickle module (the marshal module is similar but is really intended for
internal use; unless you know exactly why you're picking one over the
other, using pickle is probably the right call).

http://docs.python.org/lib/module-pickle.html



From charles.hebert at gmail.com  Thu Sep 28 06:18:11 2006
From: charles.hebert at gmail.com (charles.hebert at gmail.com)
Date: 28 Sep 2006 03:18:11 -0700
Subject: Writing 2d array in an ascci file
Message-ID: <1159438691.950658.266940@m73g2000cwd.googlegroups.com>

Hi,

I want to write an 2d array in an ascii file using numpy. There's the -
tofile / fromfile - function but it doesn't work with nd array.

Thanks, 

CH.



From steve at holdenweb.com  Mon Sep 11 11:54:33 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 16:54:33 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <45058319.2070400@googlemail.com>
References: <45057B5E.7010306@googlemail.com> <ee3urn$ane$1@sea.gmane.org>
	<45058319.2070400@googlemail.com>
Message-ID: <ee40qh$j0n$1@sea.gmane.org>

Hari Sekhon wrote:
> Steve Holden wrote:
> 
>>Hari Sekhon wrote:
>>  
>>
>>>I am writing a wrapper to a binary command to run it and then do 
>>>something with the xml output from it.
>>>
>>>What is the best way of making sure that the command is installed on the 
>>>system before I try to execute it, like the python equivalent of the 
>>>unix command "which"?
>>>
>>>Otherwise I'd have to do something like:
>>>
>>>if os.system('which somecommand') != 0:
>>>    print "you don't have %s installed" % somecommand
>>>    sys.exit(1)
>>>
>>>I know that isn't portable which is why a python solution would be 
>>>better (although this will run on unix anyway, but it'd be nice if it 
>>>ran on windows too).
>>>
>>>    
>>>
>>The easiest way to test whether the command will run is to try and run 
>>it. If the program doesn't exist then you'll get an exception, which you 
>>can catch. Otherwise you'll be stuck with non-portable mechanisms for 
>>each platform anyway ...
>>
>>regards
>>  Steve
>>  
>>
> 
> Yeah, this occurred to me just after I sent the mail, but I don't really 
> want to run the program because it will go off and do some work and take 
> time to come back. If there is a better way then that would be great. I 
> can't think of anything other than what you have suggested with a 
> message saying that the program wasn't found in the path which would be 
> the most appropriate error since the path could also be wrong.
> 
> Perhaps I'll just bite the bullet and get the program to do something as 
> small as possible to test it.
> 
> I guess I'll just have to continue to miss my unix commands...
> 
Erm, but don't you *have* to run the program anyway to produce the 
required XML output? So, if the attempt to run it fails then you know it 
isn't installed, and if it succeeds then you should have the required 
output (I'm presuming either the output will appear in a file or you'll 
be using the subprocess module or similar to capture its standard output).

To be specific: I wasn't suggesting that you try to run the program 
first just to see whether it existed, I was suggesting you try to run it 
to produce the XML, and if it fails then you know you can't.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From tim at tdw.net  Tue Sep  5 17:07:11 2006
From: tim at tdw.net (Tim Williams)
Date: Tue, 5 Sep 2006 22:07:11 +0100
Subject: Removing from a List in Place
In-Reply-To: <B51587638.196.5201.1@mx-extra>
References: <B51587638.196.5201.1@mx-extra>
Message-ID: <9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>

On 05/09/06, Gregory Pi?ero <gregpinero at gmail.com> wrote:> I'm going
to assume that it's supposed to work like this, but could
> someone tell me the reasoning behind it?  I.E. why is 3 skipped?
>
> >>> alist=[1,2,3]
> >>> for item in alist:
> ....    print item
> ....    if item==2:
> ....            alist.remove(item)
> ....
> 1
> 2
> >>>


>
> Bonus Question:
> Can we make this behave more intuitiviely in Python 3000?

It does already,  you just haven't grasped list fully yet :):)

when you remove 2 from alist,  the list becomes length 2, there is no
longer a 3rd item in the list to iterate over.

Try this

> >>> alist=[1 ,2 ,3, 4]
> >>> for item in alist:
> ....    print item
> ....    if item==2:
> ....            alist.remove(item)
> ....    print alist


From haraldarminmassa at gmail.com  Mon Sep 18 04:46:46 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 18 Sep 2006 01:46:46 -0700
Subject: Python programs always open source?
In-Reply-To: <450d07e1$0$19729$88260bb3@free.teranews.com>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
Message-ID: <1158569205.973604.54760@m7g2000cwm.googlegroups.com>

Guy Fawkes schrieb:

> I don't want my program to
> be open-source and so far all the Python programs I've seen included the
> source code.

That's one of the great freedoms of Python and its licence: You are
free to chose the licence for your product. No GPLish "you must be as
free as we", more BSDish: "Do what you want, do not come crying"

> Is it possible to make an executable with only bytecode?
I use py2exe with its "new" (~1 year) single file feature with great
success. I even succeeded in including a virtual static directory for a
webserver within that file.

To be exact, it is not really 1 file, but 2, as you often have to
distribute msvcr71.dll with it  - except for those computers having
i.e. MS Office 11 installed, there it is allready present.

Combining py2exe's single file distributable and upx compression I
achieve fairly compact "just drop and use" applications without a real
need for installation. I do not care about people decompiling
(customers get the source code on request, if they are interested).
It would be possible - but those who have the time and knowledge to
dissect and decompile those upxed py2exed files and still make a profit
would probably not see a reason to buy my software anyway :)

Harald



From morph84 at gmail.com  Wed Sep  6 11:28:18 2006
From: morph84 at gmail.com (Morph)
Date: Wed, 6 Sep 2006 17:28:18 +0200
Subject: python vs java
In-Reply-To: <edmefq$t5n$1@news4.fe.internet.bosch.com>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
Message-ID: <87120ef50609060828q1c90cdd4p4b1e5b7a46f99a63@mail.gmail.com>

On 9/6/06, Aravind <aravindmail007 at yahoo.co.in> wrote:
>
> hi,
>
> some of my friends told that python and java are similar in the idea of
> platform independency. Can anyone give me an idea as i'm a newbie to java
> and python but used to C++. My idea is to develop an app which can run
> both
> in windows and linux.



  IMHO i think that in general Python is better than Java for many reason:

  1) Java - statically typed, all variable name must be explicitly declared

  1) Python - you never declare anything. An assignment statement binds a
name to
  an object, and the object can be of any type.

  2) Java - verbose, too many words than are necessary.

  2) Python - concise, clean-cut brevity.

  3) Java - not compact

  3) Python - Compact

  stupid example:

Java

  public class HelloWorld
  {
    public static void main (String[] args)
    {
        System.out.println("Hello, world!");
    }
  }

Python

  print "Hello, world"


  4)Python - You can create mixed list
  4)Java - You can't


  5) Java learning is not fast and easy
  5) Python learning is fast and easy also for newbie developers

There are other many advantages but it depends from what you want do.




-- 
Morph

"Non sono i popoli a dover aver paura dei propri governi, ma i governi che
devono aver paura dei propri popoli."

(V)
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From robert.kern at gmail.com  Mon Sep  4 18:32:31 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 04 Sep 2006 17:32:31 -0500
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157408794.258685.260190@p79g2000cwp.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
	<1157408794.258685.260190@p79g2000cwp.googlegroups.com>
Message-ID: <edi9hu$36m$1@sea.gmane.org>

metaperl.etc at gmail.com wrote:
> One other thing: the mac os x built at python.org
> (http://www.python.org/download/)
> 
> does not state whether it is a Framework build or not. I'm guessing it
> isn't.

It is.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From rNOSPAMon at flownet.com  Tue Sep 12 01:46:03 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Mon, 11 Sep 2006 22:46:03 -0700
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
	<rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>
	<4505f897$0$75041$14726298@news.sunsite.dk>
Message-ID: <rNOSPAMon-033B27.22460311092006@news.gha.chartermi.net>

In article <4505f897$0$75041$14726298 at news.sunsite.dk>,
 Damjan <gdamjan at gmail.com> wrote:

> >> But basically, you aren't providing a CGI environment, and that's why
> >> cgi.parse() isn't working.
> > 
> > Clearly.  So what should I be doing? 
> 
> Probably you'll need to read the source of cgi.parse_qs (like Steve did) and
> see what it needs from os.environ and then provide that (either in
> os.environ or in a custom environ dictionary).

I ended up just copying and hacking the code.  It was only a dozen lines 
or so.  But it still feels wrong.

> BUT why don't you use WSGI?

Because BaseHTTPServer does everything I need except for this one thing.  
Why use a sledge hammer to squish a gnat?

rg


From steve at holdenweb.com  Mon Sep 18 08:23:07 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 18 Sep 2006 08:23:07 -0400
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158551070.407614.40030@m7g2000cwm.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>	<eek75d$otr$1@news.albasani.net>	<450db942$0$75035$14726298@news.sunsite.dk>
	<1158551070.407614.40030@m7g2000cwm.googlegroups.com>
Message-ID: <eem31t$dj7$1@sea.gmane.org>

Ilias Lazaridis wrote:
> Damjan wrote:
> 
>>>>I understand that I can use __metaclass__ to create a class which
>>>>modifies the behaviour of another class.
>>>>
>>>>How can I add this metaclass to *all* classes in the system?
>>>>
>>>>(In ruby I would alter the "Class" class)
>>>
>>>You'd have to set
>>>
>>>__metaclass__ = whatever
>>>
>>>at the top of each module whose classes are to get the new behavior.
>>
>>I think '__metaclass__ = whatever' affects only the creation of classes that
>>would otherwise be old-style classes?
> 
> 
> It seems so:
> 
> http://mail.python.org/pipermail/python-list/2003-June/166572.html
> 
> 
>>>You can't alter classes which you don't control or create in your code.
>>
>>I remeber I've seen an implementation of import_with_metaclass somewhere on
>>IBM's developerworks. I didn't quite undersntad it though.
> 
> 
> http://www-128.ibm.com/developerworks/linux/library/l-pymeta.html
> 
> I am not so much interested in old-style, as is start production with
> python 2.4 (possibly even with python 2.5).
> 
The fact remains that you won't be able to affect the built-in classes 
such as int and str - they are hard-coded in C (for CPython, at least), 
and so their metaclass is also implied and cannot be changed.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From paddy3118 at netscape.net  Sat Sep 23 03:44:40 2006
From: paddy3118 at netscape.net (Paddy)
Date: 23 Sep 2006 00:44:40 -0700
Subject: Doctests for nested functions
References: <1158972773.947401.326850@i42g2000cwa.googlegroups.com>
	<just-8C1BAD.09060223092006@news1.news.xs4all.nl>
Message-ID: <1158997479.980229.167730@i42g2000cwa.googlegroups.com>

Just wrote:
> In article <1158972773.947401.326850 at i42g2000cwa.googlegroups.com>,
>  bearophileHUGS at lycos.com wrote:
>
> > Can doctests be added to nested functions too? (This can be useful to
> > me, I use nested function when I don't have attributes that I have to
> > remember, but I want to split the logic in some subparts anyway).
>
> I think we had that discussion before, but that's not what nested
> functions are for (in Python). Use modules for that. Also solves your
> doctest problem nicely.
>
> Just

Just is right.
But...
I struggled with coming up with something. The problem is that bar does
not exist in the right form unlee you are executing the function so:

def foo(_test = False):
  r"""
  >>> foo()
  21
  >>> foo(_test = True)
  20
  """
  def bar():
    """
    >>> bar()
    11
    """
    print 10
  print 20

  if _test:
    _locals = locals()

    import doctest

    g = globals().copy()
    g.update(_locals)
    g['__test__'] = {}

    _totest = {}
    for loc in _locals.values():
      try:
        if loc.__doc__ and loc.__name__ and (loc.__name__
            not in g['__test__']):
          _totest[loc.__name__] = loc
      except:
        pass
    for _name, _testing in sorted(_totest.items()):
      doctest.run_docstring_examples(_testing, g,
          name = "foo:" + _name)

import doctest
doctest.testmod()


The output is:

Trying:
    foo()
Expecting:
    21
**********************************************************************
File "__main__", line 3, in __main__.foo
Failed example:
    foo()
Expected:
    21
Got:
    20
Trying:
    foo(_test = True)
Expecting:
    20
**********************************************************************
File "__main__", line 5, in __main__.foo
Failed example:
    foo(_test = True)
Expected:
    20
Got:
    20

**********************************************************************
    File "__main__", line 10, in foo:bar
    Failed example:
        bar()
    Expected:
        11
    Got:
        10
1 items had no tests:
    __main__
**********************************************************************
1 items had failures:
   2 of   2 in __main__.foo
2 tests in 2 items.
0 passed and 2 failed.
***Test Failed*** 2 failures.
*** DocTestRunner.merge: '__main__.foo' in both testers; summing
outcomes.
*** DocTestRunner.merge: '__main__' in both testers; summing outcomes.


- Paddy.
(but use a module instead)!



From michael.hatmaker at gmail.com  Fri Sep 15 12:43:40 2006
From: michael.hatmaker at gmail.com (michael.hatmaker at gmail.com)
Date: 15 Sep 2006 09:43:40 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <1158283278.466578.283630@p79g2000cwp.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1158283278.466578.283630@p79g2000cwp.googlegroups.com>
Message-ID: <1158338620.211774.292960@h48g2000cwc.googlegroups.com>


michael.hatmaker at gmail.com wrote:
> Kevin D. Smith wrote:
> > I've written a simple Python extension for UNIX, but I need to get it
> > working on Windows now.  I'm having some difficulties figuring out how
> > to do this.  I've seen web pages that say that MS Visual Studio is
> > required, and other that say that's not true, that MinGW will work.
> > Then there is Mike Fletcher's web page
> > (http://www.vrplumber.com/programming/mstoolkit/) that describes in
> > detail how to build extensions, but most of the links to external
> > software are no longer valid.  I think it's safe to say that I am
> > completely lost, as there appears to be no authoritative, up-to-date
> > description on how to make this work.
> >
> > --
> > Kevin D. Smith
>
> Borland released a free version of their C++ compiler and IDE on 9/4,
> coinciding with my need to move my GeoTrans extension from Linux to
> Windows.  I didn't need the IDE for the project, since my
> GeoTransMethodsSetup.py script from Linux worked fine, running it with
> the command line argument "--compiler=bcpp".  Add paths to the include
> directories and library directories.
>
> The biggest headache was a bunch of nonsense linker error messages,
> which turned out to be because I had made the mistake of installing the
> compiler under "Program Files", and setup does not behave well with
> spaces in the path name.  As a quick work-around, I used the DOS 8.3
> filename.  Next time I will install Borland in a path with no spaces in
> the name.  So, I was able to use a state-of-the-art compiler, rather
> than work with an obsolete version of some compiler relic.
>
> from distutils.core import setup, Extension
> GeoTransMethods = Extension('GeoTransMethods',
> 				include_dirs = ['C:\python24\include'],
> 				library_dirs = [
> 				r"C:\PROGRA~1\Borland\BDS\4.0\lib",
> 				r"C:\PROGRA~1\Borland\BDS\4.0\lib\release",
> 				r"C:\PROGRA~1\Borland\BDS\4.0\lib\obj",
> 				r"C:\PROGRA~1\Borland\BDS\4.0\lib\PSDK",
> 				r"C:\PROGRA~1\Borland\BDS\4.0\lib\Indy9"],
> 				sources = ["GeoTransMethods.c", "mgrs.c", "utm.c", "ups.c",
> "tranmerc.c", "polarst.c"])
>
> setup(name="GeoTransMethods", version="1.0",
>       ext_modules=[GeoTransMethods])

I neglected to mention another detail.  There are a number of postings
around regarding earlier Borland compilers.  There is a brief overview
at http://docs.python.org/inst/tweak-flags.html
It mentions the necessity of converting the object file format (COFF)
of python libraries built with Visual C++ to Borland's OMF object file
format.  You need to download coff2omf and run it to make
Borland-linkable copies of python24.lib and any other VC++ built libs,
such as zlib:

coff2omf python24.lib python24_bcpp.lib

Distutils run with the bccp compiler option will look for _bccp
versions and use them before attempting to use the VC++ versions.



From tim.golden at viacom-outdoor.co.uk  Fri Sep  8 13:42:08 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: 8 Sep 2006 10:42:08 -0700
Subject: Get CPU usage of a single process in Windows
In-Reply-To: <eds7bh$2h8o$1@news.uit.no>
References: <eds7bh$2h8o$1@news.uit.no>
Message-ID: <1157737328.810771.148890@m79g2000cwm.googlegroups.com>

Tor Erik wrote:
> Hi,
>
> This should be possible as Taskmanager tracks CPU usage for every
> process... Anyone know how this can be done?
>

WMI can probably do the trick. If you can find something on Google
for wmi cpu usage (or something similar) then translation to Python's
usually quite easy. I'm fairly sure I've got an example somewhere, but
I can't lay my hands on it at the mo.

TJG



From exarkun at divmod.com  Wed Sep 13 09:31:34 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 13 Sep 2006 09:31:34 -0400
Subject: socket question
In-Reply-To: <TzTNg.138371$LF4.101169@dukeread05>
Message-ID: <20060913133134.1717.1856337290.divmod.quotient.47982@ohm>

On Wed, 13 Sep 2006 08:13:43 -0500, hg <hg at nospam.com> wrote:
>Hi,
>
>I am not sure whether this is a python-related question.
>
>If I have device A than sends XX bytes to device B, and device B does a
>recv(XX) using the default timeout, what could make device B wake-up
>with less than XX bytes received ?

Assuming the sends take place over a TCP connection, any number of things.
In generally, you cannot rely on anything about the length of the string
returned from recv(N) except that:

  it will not be greater than N
  it will not be less than 1 unless the connection has been lost

If you expect a particular number of bytes, you need to call recv()
multiple times and collect the returned strings until you have as many
bytes as you wanted.

Jean-Paul


From andi.clemens at gmx.net  Sun Sep 17 10:08:53 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Sun, 17 Sep 2006 16:08:53 +0200
Subject: matplotlib: TypeError: a float is required
In-Reply-To: <m3mz8yzizy.fsf@calvin.watterson>
References: <eejesq$guv$1@online.de> <m3mz8yzizy.fsf@calvin.watterson>
Message-ID: <eejks5$qqn$2@online.de>

THATS IT! Thanks!
But why are all the examples wrong? Maybe they changed the API?

Andi

Tim Heaney wrote:
> Andi Clemens <andi.clemens at gmx.net> writes:
>> everytime I try to plot a bar with matplotlib I get the following
>> error message:
>> Traceback (most recent call last):
>>   File "bar_stacked.py", line 13, in ?
>>     p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
>>   File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line
>> 1641, in bar
>>     ret =  gca().bar(*args, **kwargs)
>>   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line
>> 2485, in bar
>>     xerr = asarray([xerr]*nbars, Float)
>>   File "/usr/lib/python2.4/site-packages/Numeric/Numeric.py", line
>> 134, in asarray
>>     return multiarray.array(a, typecode, copy=0, savespace=savespace)
>> TypeError: a float is required
>>
>>
>> So I guess it has something to do with Numeric.py, but I can't figure
>> out what the problem is. I tried to google but found nothing...
>>
>> Anyone has the same problem? I can plot all kinds of graphics with
>> matplotlib, but the only type I'm interested in (bars) will not
>> work.
> 
> It looks like it doesn't like not having xerr set. The documentation
> says 
> 
>   xerr and yerr, if not None, will be used to generate errorbars on
>   the bar chart
> 
> implying that if they are None (the default), then no errorbars will
> be generated. But that doesn't seem to be the case. When I add an xerr
> to both p1 and p2
> 
>   p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd,
>            xerr=zeros(N))
>   p2 = bar(ind, womenMeans, width, color='y',
>            bottom=menMeans, yerr=menStd, xerr=zeros(N))
> 
> I get the following bar chart
> 
>   http://img176.imageshack.us/my.php?image=imagenx6.png
> 
> with no errors.
> 
> Tim

-- 
homepage: http://www.the-grudge.net
ICQ: 9450091
Skype: thegrudge_2
Mozilla Thunderbird 1.5.0.5
Arch Linux


From st at tobiah.org  Thu Sep  7 16:38:07 2006
From: st at tobiah.org (tobiah)
Date: Thu, 07 Sep 2006 13:38:07 -0700
Subject: Positive lookahead assertion
In-Reply-To: <1157660939.252322.135820@e3g2000cwe.googlegroups.com>
References: <45006ede$0$19734$88260bb3@free.teranews.com>
	<1157660939.252322.135820@e3g2000cwe.googlegroups.com>
Message-ID: <45007616$0$19655$88260bb3@free.teranews.com>


>> Posted via a free Usenet account from http://www.teranews.com
> Its all about context. If you want to match something but only if it
> precedes something else, then you follow the regular expression for
> 'something' by the regular expression for 'something else' where
> `something else` is enclosed by (?=...)
> 
> The regular expression engine will surreptitiously check that
> 'something else' does indeed follow, before returning any match of
> 'something'.


How would this differ from just

re.search('somethingsomething else')

-- 
Posted via a free Usenet account from http://www.teranews.com



From tim.peters at gmail.com  Sat Sep 16 19:03:33 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Sat, 16 Sep 2006 19:03:33 -0400
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <AyLNg.1256$IA.85@newssvr11.news.prodigy.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
	<mailman.320.1158045174.5279.python-list@python.org>
	<ECINg.1207$IA.290@newssvr11.news.prodigy.com>
	<mailman.412.1158116942.5279.python-list@python.org>
	<AyLNg.1256$IA.85@newssvr11.news.prodigy.com>
Message-ID: <1f7befae0609161603i47378e06t5b1dbb19f2d8f821@mail.gmail.com>

[Tim Peters]
>> [...]  The most valuable general technique [Friedl] (eventually ;-)
>> explained he called "unrolling", and consists of writing a regexp in
>> the form:
>>
>>    normal* (?: special normal* )*
>>
>> where the sets of characters with which `normal` and `special` can
>> start are disjoint.  Under most "NFA" implementation, such a regexp is
>> immune to most bad behaviors, whether finding very long matches, or in
>> searching a very long string that happens not to contain any matches.

[Bryan Olson]
> So how general is that?

Between 6 and 7 ;-)

> The books just says "certain common expressions". I think the real
> answer is that one can unroll exactly the true regular expressions.

I'm sure he didn't have that much in mind; e.g., it's a real strain to
fit a fat alternation of fixed strings into that "pattern"
(cat|dog|wombat|weasel|...).'

> The unrolling is essentially resolving the states of a DFA by hand.

Oh yes, for those who've studied the theoretical underpinnings.  Most
people have not.  Much of what he gives as practical advice amounts to
ways to "trick" an "NFA" engine into doing what a "DFA" engine would
do, but explained from the POV of how a backtracking search engine
works.  And it makes /sense/ at that level too, divorced from any
knowledge of how a linear-time automaton might be constructed in
theory; e.g., you "want to" give the  search engine only one choice
because you want to avoid the possibility of needing to backtrack
later, not because you're picturing a theoretical linear-time
automaton and striving to mimic its behavior.

That explanation may not work for you, but it's effective for people
who haven't studied the theory here.  Such explanations also extend
naturally to gimmicks like backreferences,  which have no counterpart
in CompSci regexps.


From grante at visi.com  Fri Sep 15 12:33:56 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 16:33:56 -0000
Subject: Limitate speed of a socket-based data transferring
References: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>
	<zpAOg.12468$xQ1.1498@newsread3.news.pas.earthlink.net>
Message-ID: <12gllfkki918r7a@corp.supernews.com>

On 2006-09-15, Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:
> On 14 Sep 2006 04:54:48 -0700, "billie" <gnewsg at gmail.com> declaimed the
> following in comp.lang.python:
>
>> Hi all. I'm writing a TCP-based application that I will use to trasfer
>> binary files through the network. This piece of code represents how do
>> I get a file from a remote peer and save it on my local hard drive:
>> 
> 	<code snipped>
>> 
>> I would like to know how could be possible to limit the file transfer
>> speed (for example: don't write more than 50 Kb/sec).
>> Some ideas?
>> 
> 	I'm not sure you /can/ limit the /receive/ speed.

Sure you can.  Just read data from the socket at the max speed
you want to receive.  The receive buffer for that socket will
fill up and the TCP window will start close up and throttle the
sender.

> The sender will send at whatever rate they are capable of, so
> packets may just become backlogged on your receiving socket

When that happens, the sending end of the socket will throttle
down to match the rate at which data is being read from the
socket.

> waiting for you to read them if you add some sort of delay to
> your reading loop.

-- 
Grant Edwards                   grante             Yow!  .. the HIGHWAY is
                                  at               made out of LIME JELLO and
                               visi.com            my HONDA is a barbequed
                                                   OYSTER! Yum!


From f.braennstroem at gmx.de  Mon Sep 25 14:33:15 2006
From: f.braennstroem at gmx.de (Fabian Braennstroem)
Date: Mon, 25 Sep 2006 20:33:15 +0200
Subject: python gtk based file manager
Message-ID: <ef97d8$vrn$1@sea.gmane.org>

Hi,

I am looking for a file manager based on pygtk. It seems
that there does not exist any!? Maybe, someone has a hint or
already some starting code lines for such a 'thing'!?

Greetings!
 Fabian



From simon.hibbs at gmail.com  Tue Sep 19 12:15:50 2006
From: simon.hibbs at gmail.com (Simon Hibbs)
Date: 19 Sep 2006 09:15:50 -0700
Subject: I need some tips to begin a simple project
In-Reply-To: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>
References: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>
Message-ID: <1158682550.311880.315560@i42g2000cwa.googlegroups.com>

> PyGame is in it, right?

Python comes with a basic GUI toolkit called Tk with basic stuff such
as buttons, text and graphics widgets, menus, etc.

PyGame is a seperate package that you can download that makes it fairly
easy to create games. There are also additional libraries that make
PyGame programing even easier.

Having said all that, Python isn't magic. I'd recommend doing something
simple first, such as a calculator or a text editor. These are very
easy to do, but will cover the basics of creating a user interface,
manipulating data and accessing files.

Simon Hibbs



From rogue_pedro at yahoo.com  Fri Sep  1 22:05:09 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 1 Sep 2006 19:05:09 -0700
Subject: pictures as characters in a Tk text box?
References: <1157149401.300181.300010@e3g2000cwe.googlegroups.com>
Message-ID: <1157162709.109743.63020@m79g2000cwm.googlegroups.com>

Jay wrote:
> This may be really obscure, but I had a dream about programming
> something like this, so don't blame me.  Is it possible to take a small
> image or icon and display it as a character in a Tk text box?  Think
> how Thunderbird displays text smilies as actual smiley icons.  Or how
> in AIM as you type a smiley, it replaces it with the picture.  Does
> anyone know how to display these specifically in a Tk text box?  Thanks.

Dreaming in Python, eh?  Maybe you should take a break.  ;-)

Sure, quoting the link below: "You can put an image or bitmap into a
text widget. It is treated as a single character whose size is the
natural size of the object."

You can also embed any Tk widget in a Tk Text widget, including
ImageTks and widgets with bitmaps.

See:
http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-image.html
and
http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-window.html


HTH,
~Simon



From no_spam at tilanus.com  Fri Sep 15 03:17:34 2006
From: no_spam at tilanus.com (Winfried Tilanus)
Date: Fri, 15 Sep 2006 09:17:34 +0200
Subject: Is there a way to find IP address?
In-Reply-To: <1158301077.702087.55680@k70g2000cwa.googlegroups.com>
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
	<mailman.41.1158163545.10491.python-list@python.org>
	<1158301077.702087.55680@k70g2000cwa.googlegroups.com>
Message-ID: <450a538b$0$4526$e4fe514c@news.xs4all.nl>

On 09/15/2006 Lad wrote:
> How can be HTTP_X_FORWARDED_FOR easily  spoofed? I thought that  IP
> address is not possible change.

Because it is a header that is added by the proxy. This header has (or
should have) no role in the proces of relaying the request by the proxy.
It is just politely added by the proxy to make it possible to identify
for who the request is forwarded. So the proxy might add anything it
likes, or nothing at all if it is an anonymizing proxy.

Winfried


From altemurbugra at gmail.com  Mon Sep 25 21:12:06 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 25 Sep 2006 18:12:06 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159229686.723188.318340@d34g2000cwd.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<1159222443.540807.232040@k70g2000cwa.googlegroups.com>
	<1159225120.550605.220930@d34g2000cwd.googlegroups.com>
	<1159228701.795132.223800@d34g2000cwd.googlegroups.com>
	<1159229686.723188.318340@d34g2000cwd.googlegroups.com>
Message-ID: <1159233126.549551.255200@e3g2000cwe.googlegroups.com>


And also writing the result as a html or xml file



From steve at holdenweb.com  Wed Sep  6 03:34:21 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:34:21 +0100
Subject: CONSTRUCT -
In-Reply-To: <1157514869.245884.113030@m79g2000cwm.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>	<1157240956.074166.131100@m79g2000cwm.googlegroups.com>	<mailman.10303.1157279220.27775.python-list@python.org>
	<1157514869.245884.113030@m79g2000cwm.googlegroups.com>
Message-ID: <edltkq$okp$1@sea.gmane.org>

Simon Forman wrote:
> Fredrik Lundh wrote:
> 
>>Simon Forman wrote:
>>
>>
>>>I'm sorry, your post makes very little sense.
>>
>>you're somewhat new here, right ? ;-)
>>
>></F>
> 
> 
> 
> Yah, I've been posting here about three months now.   Why, did I miss
> something?  :-)
> 
Yes: the previous posts from the same poster. Ilias Lazaridis' 
communications can be a little obscure, to say the least, and it's 
apparent that his approach to language evaluaation doesn't emphasize 
community experience too heavily. Still, it takes all sorts to make a 
newsgroup ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From richard at sneakerfish.com  Mon Sep 11 12:52:25 2006
From: richard at sneakerfish.com (Richard Morello)
Date: Mon, 11 Sep 2006 12:52:25 -0400
Subject: assistance with python coding
In-Reply-To: <!&!AAAAAAAAAAAYAAAAAAAAAIfJJtCtdYpCgkwH0fZ63UTCgAAAEAAAAFenylNNu99Ev4dFQBNjKxgBAAAAAA==@us.army.mil>
Message-ID: <000701c6d5c2$af60db90$60031eac@MORELLOTABLET>

Dear John,
 
This is a switch.  In other words if you have two variables, a and b, switch
the values.  The author of the exercise is trying to point out that without
the sequence operation, you must do it the same way as in nearly all other
languages.  That is:
 
tmp = a
a = b 
b = tmp
 
Python gives you the ability to switch two variables with just a single
statement.  To perform the above with a sequence assignment would be:
 
a, b = b, a
 
Your example only slightly complicated this by using an array.  The answer
you are looking for is:
 
tmp = self.cards[i]
self.cards[i] = self.cards[j]
self.cards[j] = tmp
 
Let me know if you need any more help!
 
Yours truly,
Richard Morello
 
-----Original Message-----
From: python-list-bounces+richard=sneakerfish.com at python.org
[mailto:python-list-bounces+richard=sneakerfish.com at python.org] On Behalf Of
John Shappell
Sent: Monday, September 11, 2006 12:23 PM
To: python-list at python.org
Subject: assistance with python coding


I don't understand what this question is asking; can you clarify for me and
maybe point me in the right direction?
 
As an exercise, rewrite this line of code without using a sequence
assignment. 
self.cards[i], self.cards[j] = self.cards[j], self.cards[i]
 
V/R
 
CW2 John Shappell
931-980-4707
FAX 775-618-2455
john.j.shappelljr at us.army.mil
 
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From g.brandl-nospam at gmx.net  Mon Sep 25 14:07:25 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 20:07:25 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <4517eda8$0$23410$636a55ce@news.free.fr>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
	<ef8p2c$9pt$2@news.albasani.net>
	<4517eda8$0$23410$636a55ce@news.free.fr>
Message-ID: <ef95su$oan$2@news.albasani.net>

Christophe wrote:
> Georg Brandl a ?crit :
>> Christophe wrote:
>>> Steven D'Aprano a ?crit :
>>>> By memory, in an thread about the same topic just a few days ago, 
>>>> Fredrik
>>>> Lundh posted a link to Perl's FAQs that suggests a method for 
>>>> "validating"
>>>> email addresses: treat it like a password and ask the user to type it
>>>> twice. That will protect against simple typos and input errors.
>>>
>>> I hate that thing. When I see that, I type my email once and 
>>> copy/paste into the second edit box. This is useless AND annoying at 
>>> the same time.
>> 
>> It may be for you, but there certainly are users that misspel their
>> e-mail address more frequently, just like passwords. And therefore it's a
>> nice touch to spare both the original submitter and the owner of the
>> misspelled address more work.
> 
> Which proportion of the people that sometimes misspell their e-mail also 
> use cut&paste when faced with "please type your e-mail twice" web pages?

I don't know. But really, it doesn't matter. The cut-and-paste operation
(which is done at least partially using the mouse by most such people) needs
a lot of "eye contact" with the thing cut and pasted, so there's a lot
more chances to realize that the address is wrong.

Georg


From sjmachin at lexicon.net  Sun Sep 10 23:34:50 2006
From: sjmachin at lexicon.net (John Machin)
Date: 10 Sep 2006 20:34:50 -0700
Subject: CPython keeps on getting faster
Message-ID: <1157945690.334367.10170@h48g2000cwc.googlegroups.com>

Here are some data points that illustrate the improvement in speed
since 2.1 for one (probably atypical) application: rummaging through a
120MB Microsoft Excel spreadsheet file using the xlrd package.

The time shown is the number of seconds required to open the file and
parse out all data content -- heavy usage of struct.unpack(). The only
code that is conditional on the Python version is where it defines
things to stop 2.1 barfing, like a dummy class called "object" .

2.1.3: 117
2.2.3:  95
2.3.5:  75
2.4.3:  62
2.5c1:  49

Other info:
xlrd version: 0.6.0a2 -- coming soon to a cheese shop near you :-)
OS: Windows XP SP2
CPU:
    PROCESSOR_IDENTIFIER=x86 Family 15 Model 4 Stepping 1, GenuineIntel
    HumanSpeak: Intel dual-core Pentium (R) 4, nominal speed is
3.20Ghz
Memory: 1 Gb (enough to avoid swapping)

Well done, core devs!

FWIW, IronPython 1.0.60816 does it in 132 seconds. For avoidance of
doubt (and flak!) I'd like to clarify that IMHO the mere existence of
IronPython merits plaudits. I do however trust that it will similarly
become faster over time. And nobody mentioned the possibility of an
188% increase in memory usage, which may well be partially explained by
this:

DOS prompt>\ironpython\ipy
IronPython 1.0.60816 on .NET 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.
>>> str is unicode
True

Cheers,
John



From skip at pobox.com  Wed Sep 13 23:36:07 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 13 Sep 2006 22:36:07 -0500
Subject: stock quotes
In-Reply-To: <bF2Og.230637$k%3.67439@dukeread12>
References: <bF2Og.230637$k%3.67439@dukeread12>
Message-ID: <17672.52775.909687.598209@montanaro.dyndns.org>


    don> I would like to download stock quotes from the web, store them, do
    don> calculations and sort the results.  However I am fairly new and
    don> don't have a clue how to parse the results of a web page download.
    don> I can get to the site, but do not know how to request the certain
    don> data need.  Does anyone know how to do this?  I would really
    don> appreciate it.

Before you launch into a screen scraping exercise, you might want to check
around to see if there are any web services apis which already provide stock
quotes.  This might be a good place to start:

    http://www.programmableweb.com/

Skip


From http  Sun Sep 17 11:55:35 2006
From: http (Paul Rubin)
Date: 17 Sep 2006 08:55:35 -0700
Subject: mp3 file length in time
References: <1158505736.188862.223640@h48g2000cwc.googlegroups.com>
	<7xsliqjza7.fsf@ruckus.brouhaha.com>
	<1158506489.739543.27720@m7g2000cwm.googlegroups.com>
Message-ID: <7xsliqo5c8.fsf@ruckus.brouhaha.com>

"Jay" <jaysherby at gmail.com> writes:
> Any tips on how to do that?

You might type "python mp3" into google.  That's often the fastest way
to find answers of this type.


From rhymes at myself.com  Thu Sep 14 06:28:16 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Thu, 14 Sep 2006 12:28:16 +0200
Subject: Why not event-driven packages in other than the main thread?
References: <eeb6go$kfk$1@news.uit.no>
Message-ID: <1hlnmga.3ym4581km0bppN%rhymes@myself.com>

Tor Erik <torerik81 at gmail.com> wrote:
> I've developed an application were I've used Tkinter for the GUI.
> When I ran the GUI in another thread than the main, it kept locking
> up.

That's because Tkinter is not thread safe AFAIK.

> I experienced similar problems with Twisted.

Neither Twisted is thread-aware. It uses thread for a couple of things
(twisted.row and address resolution). You can call stuff in a separate
thread with deferToThread or callInThread but avoid threads is best. 

> But could anyone tell me why running these in a thread other than the
> main one doesn't work?

Because neither Twisted nor Tkinter are meant to work with threads.

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From steve at holdenweb.com  Fri Sep  8 17:38:26 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 22:38:26 +0100
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157749692.092338.240820@m73g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<44fd309b$0$306$626a54ce@news.free.fr>	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
Message-ID: <edsnrd$91r$1@sea.gmane.org>

mensanator at aol.com wrote:
> Ben Sizer wrote:
>>mensanator at aol.com wrote:
[...]
>>>What are the chances that anything I send in as a bug report
>>>will simply be ignored? Kind of like the Emporer's New Clothes, eh?
>>>It would be an admission of ignorance and stupidity on the part
>>>of the Python Development Team, wouldn't it?
>>
>>Why get so bitter over this? I agree the docs need fixing but you make
>>it sound like this was a deliberate attempt to make you waste your
>>time.
> 
> 
> I'm not bitter, just being a squeaky wheel.
> 
Ain't that the truth :-)

> And I'd be more than happy to make PROPER corrections to the
> docs if I thought the effort wouldn't be wasted. But in looking over
> this thread, it certainly appears that there are very few who
> understand the issue.
> 
Well, as I've already suggested, sound corrections and/or additions to 
the documentation are *very* unlikely to be refused. I suspect you need 
to be a little more pragmatic with regard to SQLite. If it doesn't suit 
your needs, that's fine. If you can suggest changes that will avoid 
others experiencing the same disappointment you have, even better.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From dawodu4fun at yahoo.com  Sat Sep 16 02:52:48 2006
From: dawodu4fun at yahoo.com (spiffy)
Date: Sat, 16 Sep 2006 06:52:48 GMT
Subject: float questions
References: <094ng2916miuds69d9l0rul7r893esobu9@4ax.com>
	<mailman.164.1158387213.10491.python-list@python.org>
Message-ID: <jk7ng213dbkck74r9k330oaoevhkutsihv@4ax.com>

On Sat, 16 Sep 2006 03:13:16 -0300, Gabriel Genellina
<gagsl-py at yahoo.com.ar> wrote:

>At Saturday 16/9/2006 02:56, spiffy wrote:
>
>>after some calculations i have this number as a result...
>>-7.1054273576010019e-015
>
>This means -7.1054... * 10**(-15) and it's a compact way of writing 
>-0.0000000000000071054...
>
>>what does the 'e' mean? is this an error?
>
>It is not an error, just a very small number
>
>>i want to be able to round this number to 3 places, but round() does
>>not work....
>
>Does not work, or you get 0.000? That's normal.


yeah, i get 0.0... thank you for your help.
>
>
>
>Gabriel Genellina
>Softlab SRL 
>
>
>	
>	
>		
>__________________________________________________
>Pregunt?. Respond?. Descubr?.
>Todo lo que quer?as saber, y lo que ni imaginabas,
>est? en Yahoo! Respuestas (Beta).
>?Probalo ya! 
>http://www.yahoo.com.ar/respuestas


From larry.bates at websafe.com  Wed Sep 13 22:33:08 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 13 Sep 2006 21:33:08 -0500
Subject: stock quotes
In-Reply-To: <bF2Og.230637$k%3.67439@dukeread12>
References: <bF2Og.230637$k%3.67439@dukeread12>
Message-ID: <4508BF64.1050606@websafe.com>

Donlingerfelt wrote:
> I would like to download stock quotes from the web, store them, do
> calculations and sort the results.  However I am fairly new and don't have a
> clue how to parse the results of a web page download.   I can get to the
> site, but do not know how to request the certain data  need.  Does anyone
> know how to do this?  I would really appreciate it.  Thanks.
> 
> 
It depends:

If the HTML on the page(s) you want to process is clean and well formed it
can be pretty easy.  Download elementree from:

http://effbot.org/zone/element-index.htm

This will be included in Python 2.5 standard library, but for 2.4 and
older you need to download it.

If the HTML on the page(s) is not clean or well formed.  Parsing the
HTML can be "messey".  There is a module called BeautifulSoup that is
pretty good at this.  You will need to get it from:

http://www.crummy.com/software/BeautifulSoup/#Download

In addition you will want to use the standard library urllib module
to connect to and read the information you want to parse.

Start with urllib and get it to read your HTML first, then use either
elementtree or beautifulsoup to parse it and extract the data you
want to get.

Note: If the web page gets changed, it can break your program.

Hope information helps.

-Larry


From felipe.lessa at gmail.com  Tue Sep  5 05:19:27 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Tue, 5 Sep 2006 06:19:27 -0300
Subject: threading support in python
In-Reply-To: <1157422764.573537.116340@m79g2000cwm.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
Message-ID: <c2701f5c0609050219o35a68601je2bc8b1037f8c44e@mail.gmail.com>

4 Sep 2006 19:19:24 -0700, Sandra-24 <sandravandale at yahoo.com>:
> If there was a mod_dotnet I wouldn't be using
> CPython anymore.

I guess you won't be using then: http://www.mono-project.com/Mod_mono

-- 
Felipe.


From fakeaddress at nowhere.org  Tue Sep 12 21:29:02 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 13 Sep 2006 01:29:02 GMT
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
Message-ID: <y9JNg.1213$IA.251@newssvr11.news.prodigy.com>

Licheng Fang wrote:
> Basically, the problem is this:
> 
>>>> p = re.compile("do|dolittle")
>>>> p.match("dolittle").group()
> 'do'
> 
> Python's NFA regexp engine trys only the first option, and happily
> rests on that. There's another example:
> 
>>>> p = re.compile("one(self)?(selfsufficient)?")
>>>> p.match("oneselfsufficient").group()
> 'oneself'
> 
> The Python regular expression engine doesn't exaust all the
> possibilities, but in my application I hope to get the longest possible
> match, starting from a given point.
> 
> Is there a way to do this in Python?

Yes. Here's a way, but it sucks real bad:


     def longest_match(re_string, text):
	regexp = re.compile('(?:' + re_string + ')$')
         while text:
	    m = regexp.match(text)
             if m:
                 return m
             text = text[:-1]
         return None


-- 
--Bryan


From steven.bethard at gmail.com  Mon Sep 11 09:59:23 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 11 Sep 2006 07:59:23 -0600
Subject: Refactoring Dilemma
In-Reply-To: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
Message-ID: <d7mdnS6Ew5Mo9pjYnZ2dnUVZ_omdnZ2d@comcast.com>

Kamilche wrote:
> Is there any reason NOT to do this that I may be unaware of?
[snip]
> # ----------- Module 2.py ------------
> # 'Self' module processing
> import sys
> var = 0
> self = sys.modules[__name__]
> 
> def MyRoutine():
>     self.var = 1
> 
> MyRoutine()
> print var

Looks basically fine to me, but I'd probably write it as::

     _self = __import__(__name__)

Then you don't need to import sys.  I'd also use a leading underscore 
for "self" so that it's clearly marked as a module-internal attribute.

STeVe


From johnjsal at NOSPAMgmail.com  Tue Sep 26 16:25:37 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 26 Sep 2006 20:25:37 GMT
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <45198acb$0$1378$636a55ce@news.free.fr>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<45198acb$0$1378$636a55ce@news.free.fr>
Message-ID: <51gSg.31$1n3.249@news.tufts.edu>

Bruno Desthuilliers wrote:

> I really doubt one can be an "expert" in any language without at least a 
> good knowledge of a half a dozen other languages and some exposure to 
> yet another half dozen.

Ok, I guess the two of you got me on that one. Maybe the conditions of 
my question are a little too artificial. I suppose what I meant more 
than a person being familiar with only one language was a person using 
only one language in their job (which you clearly aren't! :)


From robert.kern at gmail.com  Tue Sep  5 00:42:26 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 04 Sep 2006 23:42:26 -0500
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157428874.399869.10560@m79g2000cwm.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>	<1157413341.812545.51970@m73g2000cwd.googlegroups.com>	<44FCF02F.90900@kevin-walzer.com>
	<1157428874.399869.10560@m79g2000cwm.googlegroups.com>
Message-ID: <ediv7i$l3d$1@sea.gmane.org>

hiaips wrote:
> Kevin Walzer wrote:

>> The universal build from Python.org is outdated (IIRC). A better, more
>> optimized one is available from
>> http://pythonmac.org/packages/py24-fat/dmg/Universal-MacPython-2.4.3-2006-04-07.dmg
> 
> Outdated??? It's Python 2.4.3 (and they already have a build for
> 2.5rc1), so I'm not sure what you mean.

The Mac OS X Universal binary build process has been improved since the 2.4.3 
source release.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From Doug.Fort at gmail.com  Fri Sep 29 09:49:16 2006
From: Doug.Fort at gmail.com (Doug.Fort at gmail.com)
Date: 29 Sep 2006 06:49:16 -0700
Subject: [ANN] Spasmoidal 0.1.0 - Asynchronous I/O with Python 2.5 Extended
	Generators
Message-ID: <mailman.945.1159541467.10491.python-announce-list@python.org>

"...from little towns with strange names like Smegma, Spasmodic, Frog,
and the far-flung Isles of Langerhans".

Someone on SourceForge has a project that includes the name
'spasmodic' so I'm using the name spasmoidal. But this code will
always be spasmodic to me.

Asynchronous I/O (and other tasks) proceeding in fits and spasms
The SpasmodicEngine selects tasks (spasmoids) from a (heapqueue based)
priority queue. The tasks are Python 2.5 extended generators (some
call them coroutines: PEP 342). The engine calls task.send() with an
appropriate argument. One of the library of tasks is Pollster.
Pollster calls poll() with for tasks that are waiting I/O. Tasks that
are ready for I/O are fed to the priority queue.

Spasmodic provides an efficient way to manage a large number of
sockets and/or files. Other processing works well too, if it can be
subdivided into brief spasms.

Project
http://code.google.com/p/spasmoidal/

Download
http://cheeseshop.python.org/pypi/spasmoidal/0.1.0
--
Doug Fort, Consulting Programmer
http://www.dougfort.com



From webraviteja at gmail.com  Sat Sep 23 21:03:30 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 23 Sep 2006 18:03:30 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
Message-ID: <1159059810.365901.106060@m73g2000cwd.googlegroups.com>

> A trivial question - I have a working Python script that I have to
> invoke from C++ code. No fancy stuff - just run the whole script with
> its parameters. No callbacks, no signalling - nada, just
> stupid,primitive, straightforward call.
>
> And while there is a lot of help on embedding, I could not find out how
> to run script as a whole.SOS!!!!

System::Diagnostics::Process::Start



From bolderaft at gmail.com  Sun Sep 17 18:28:42 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 17 Sep 2006 15:28:42 -0700
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
	<1158507849.378435.47080@d34g2000cwd.googlegroups.com>
	<mailman.207.1158509454.10491.python-list@python.org>
	<75GdnRSl_tvnI5DYnZ2dnUVZ_qCdnZ2d@speakeasy.net>
Message-ID: <1158532122.782673.140400@i3g2000cwc.googlegroups.com>


A.M. Kuchling wrote:
> However, this code isn't used at the moment because I have no idea
> what to do about version controlling the links.  Do we just use the
> current links whenever the HTML is generated?  Make a copy of the list
> and commit them into SVN, so the links cease to be updated but are
> consistent for a given version's docs?  It would be nice to figure out
> what to do.

That sounds like another good reason to handle the examples at
python.org, but it argues against a wiki approach for examples. Maybe
the examples should be part of the same SVN repository; if they are
implemented as doctests they can be validated before each new release.
On the other hand, that probably only works for very simple examples;
I've seen some extensive examples at in the Cookbook that might not fit
well into a doctest.

There could a separate tab for "Links" alongside tabs for
documentation, svn source, doctests, discussion, bugs/requests, wiki.
The links tab might have a disclaimer to the effect of "Your Mileage
May Vary", and each link might have  a date posted next to it. The
links might not all be examples; they could point to alternative tools,
related resources, more discussion -- whatever the community comes up
with. Eventually, someone would have to prune; the dates would help
with that. Also, if folks could rate the links, the best ones might
float to the top.



From joel.hedlund at gmail.com  Fri Sep  1 20:10:02 2006
From: joel.hedlund at gmail.com (Joel Hedlund)
Date: Sat, 02 Sep 2006 02:10:02 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <1157150813.234752.61890@p79g2000cwp.googlegroups.com>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
	<1157134700.881039.131440@m73g2000cwd.googlegroups.com>
	<ed9vmr$okk$1@news.lysator.liu.se>
	<1157150813.234752.61890@p79g2000cwp.googlegroups.com>
Message-ID: <edahts$stf$1@news.lysator.liu.se>

> Oh, I was just addressing your bit about not knowing unit tests.
> Doctests can be quicker to put together and have only a small learning
> curve.

OK, I see what you mean. And you're right. I'm struggling mightily right 
now with trying to come up with sane unit tests for a bunch of 
generalized parser classes that I'm about to implement, and which are 
supposed to play nice with each other... Gah! But I'll get there 
eventually... :-)

> On the larger scale, I too advocate extensive checking of 'tainted'
> data from 'external' sources, then assuming 'clean' data is as expected
> and doing no explicit further data checks, after all, you've got to
> trust your development team/yourself.

Right.

Thanks for helpful tips and insights, and for taking the time!

Cheers!
/Joel


From python.list at tim.thechases.com  Mon Sep 25 14:49:54 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 25 Sep 2006 13:49:54 -0500
Subject: Newbie RE question
In-Reply-To: <20060925183022.91218.qmail@web33203.mail.mud.yahoo.com>
References: <20060925183022.91218.qmail@web33203.mail.mud.yahoo.com>
Message-ID: <451824D2.2050307@tim.thechases.com>

1) Please don't top-post...it makes it hard to reply in context

2) You may want to "reply to all" so that the mailing list gets 
CC'd...there are lots of smart folks on the list, and by replying 
only to me, you limit your options to the meager extents of my 
knowledge.

>>> I would like to search for any of the strings in r'/\:*?"<>|' in a
>>> string using RE module.  Can someone tell me how?
>>
>> use the search() method of the regexp object.
>>
>> r = re.compile(r'[/\:*?"<>|]')
>> results = r.search(a_string)
>>
> Thank you very much for your helpful reply.  Could you tell me what I can do
> once I do:
> 
> r = re.compile(r'[/\:*?"<>|]')
> results = r.search(a_string)
> 
> I'm not sure what I can do with the result variable?

Well, your original post only asked /how/ to search for one of 
those characters ("Can someone tell me how?"), but failed to 
specify /what/ you wanted to do with the results.

If you wanted the index of the first one, then

	results.start()

will return that.

If you want the character in that set that was found first, it is 
found in

	results.group(0)

Or, if you want them all, you can use

	r.findall(a_string)

which will return a list of all the characters in that set that 
were found in a_string.

Using the interpreter's built-in help and introspection can be 
immensely helpful, as you can do things like

 >>> dir(results) # to find what you can do with the results
 >>> dir(r)# find out what a compiled regex object can do
 >>> help(results.start) # learn about the start() function

Just a few pointers,

-tkc







From ironfroggy at gmail.com  Mon Sep 18 00:21:16 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 00:21:16 -0400
Subject: Problem with operator overloading and inheritance in Python
In-Reply-To: <BAY107-DAV498667C2E70EBED239EF8FD2C0@phx.gbl>
References: <BAY107-DAV498667C2E70EBED239EF8FD2C0@phx.gbl>
Message-ID: <76fd5acf0609172121h6aaa89b4u87c0569f3e28b8d4@mail.gmail.com>

On 9/17/06, Edward A. Waugh <edward_waugh at hotmail.com> wrote:
>
>
>
>
> Consider the following code:
>
> import sys
>
> class FirstClass:
>     def __init__(self, value):
>         self.data = value
>     def __add__(self, value):
>         return FirstClass(self.data + value)
>     def display(self):
>         print self.data
>
> class SecondClass(FirstClass):
>     def __add__(self, value):
>         # Generalized version of SecondClass(self.data + value).
>         sum = FirstClass(self.data) + value
>         return SecondClass(sum.data)
>     def display2(self):
>         print self.data
>
> x = SecondClass(1)
> # Must reimplement __add__ in SecondClass or else x after the assignment is
> # an instance of class FirstClass not SecondClass.  This implies that all
> # subclasses of classes that overload operators such as + must reimplement
> # those methods to ensure that the class being returned is correct.
> x += 1
> x.display2()
>
> Note the comments in the code and observe that as is execution yields:
>
> C:\Files\Python> problem.py
> 2
>
> But if the reimplementation of __add__ in SecondClass is removed (or
> commented out) then as claimed in the comment above the code does not work:
>
> C:\Files\Python> problem.py
> Traceback (most recent call last):
>   File "C:\Files\Python\problem.py", line 25, in ?
>     x.display2()
> AttributeError: FirstClass instance has no attribute 'display2'
>
> This is because x after the statement x += 1 has been executed is an object
> of class FirstClass because the method implementing addition in FirstClass
> explicitly returns a FirstClass object.
>
> This seems to me to be a big problem because what this means is that if
> class X overloads any operator, e.g. addition, then all subclass of X (and
> all subclasses of those subclasses recursively)
> must reimplement all the operator methods defined in X.
>
> Is this a real problem with Python or just the way I am coding it as I admit
> that I am new to Python?
> If its my fault then what is the correct way to implement SecondClass?
>
> Thanks,
> Edward
>
> P.S. Why were slices ([low:high]) implemented to return the low'th to
> high-1'th values of a sequence?  For example I would expect that [2:4] of
> "abcdef" would return "cde" not "cd" and this is the case in other languages
> that do support slices of strings (HP BASIC) and arrays (Perl).  But I do
> accept that this a personal preference of mine so if folks don't agree with
> me that is fine.

You can take type(self) as the constructor for the result in the
__add__ method, as is shown in the example below. This will cause all
results to be of the same type as the left-hand operand in A+B for
this class' instances. Of course, this means you have to be sure that
all child classes take the same __init__ args, but that isn't hard to
stick to.

def __add__(self, value):
    return type(self)(self.data + value)


From wleftwich at gmail.com  Wed Sep 27 14:18:13 2006
From: wleftwich at gmail.com (Wade Leftwich)
Date: 27 Sep 2006 11:18:13 -0700
Subject: ElementTree and proper identation?
References: <iYySg.34$1n3.469@news.tufts.edu><r4zSg.35$1n3.414@news.tufts.edu>
Message-ID: <1159381093.270637.44930@d34g2000cwd.googlegroups.com>

John Salerno wrote:
> John Salerno wrote:
> > I've been doing a little studying of ElementTree and it doesn't seem
> > very satisfactory for writing XML files that are properly
> > formatted/indented. I saw on the website that there is an
> > indent/prettyprint function, but this isn't listed in the Python docs
> > and I didn't see it after doing a dir(), so I guess it isn't a part of
> > the Python version.
> >
> > Did I miss something somewhere else, or can you just not use ElementTree
> > to write formatted XML files as they'd look if done by hand?
> >
> > Thanks.

You can roll your own by starting at the root and recursing through
child elements, increasing the indentation as you go:

But I do it the lazy way:

$ xmllint --format ugly.xml >pretty.xml

-- Wade Leftwich
Ithaca, NY



From toby at tobiah.org  Thu Sep 28 11:00:44 2006
From: toby at tobiah.org (tobiah)
Date: Thu, 28 Sep 2006 08:00:44 -0700
Subject: How to update my web automatically by python?
In-Reply-To: <1159413275.681440.78320@e3g2000cwe.googlegroups.com>
References: <1159413275.681440.78320@e3g2000cwe.googlegroups.com>
Message-ID: <451bd6cd$0$19726$88260bb3@free.teranews.com>

If you are in a dynamic web environment, then
please post the components of that environment.
If you only want to update your static web pages,
look at ftplib, or scripting scp commands.

sunboy30860 at 163.com wrote:
> How to update my web automatically by python?
> 
> I have one twiki web page
> https://twiki.cern.ch/twiki/bin/view/Atlas/CSC11DQ2ReplicateToCERNCAF
> In this page,the dates often need to be updated.Every time after I
> produce the dates ,I plaster the date to the web manual.The dates is
> produced by a python program.I want to write a python program to update
> my web automatically.I hope someone could help me.Tkanks!!
> 

-- 
Posted via a free Usenet account from http://www.teranews.com



From claudio.grondi at freenet.de  Sun Sep 17 13:20:29 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Sun, 17 Sep 2006 19:20:29 +0200
Subject: ANN: pyfuzzylib 0.1.3 Released
In-Reply-To: <mailman.175.1158412727.10491.python-list@python.org>
References: <mailman.175.1158412727.10491.python-list@python.org>
Message-ID: <eek04p$llp$1@newsreader2.netcologne.de>

nelson - wrote:
> PyFuzzyLib is a library for fuzzy inference engine building. Using
> pyfuzzylib you can add fuzzy logic to your programs. 
> The program is in it early stage of development, 
> but it is still usable. 
Curious why after it will become mature it won't be usable any more ;-) ?

> Every sort of feedback is appreciated!
Hope so ... :)

Claudio Grondi


From bradfordh at gmail.com  Thu Sep 14 22:40:35 2006
From: bradfordh at gmail.com (Tempo)
Date: 14 Sep 2006 19:40:35 -0700
Subject: Pre-defining an action to take when an expected error occurs
Message-ID: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>

Hello. I am getting the error that is displayed below, and I know
exactly why it occurs. I posted some of my program's code below, and if
you look at it you will see that the error terminates the program
pre-maturely. Becasue of this pre-mature termination, the program is
not able to execute it's final line of code, which is a very important
line. The last line saves the Excel spreadsheet. So is there a way to
make sure the last line executes? Thanks in advanced for all of the
help. Thank you.


Error
####

IndexError: list index out of range


Code Sample
###########

for rx in range(sh.nrows):
    rx = rx +1
    u = sh.cell_value(rx, 0)
    u = str(u)
    if u != end:
        page = urllib2.urlopen(u)
        soup = BeautifulSoup(page)
        p = soup.findAll('span', "sale")
        p = str(p)
        p2 = re.findall('\$\d+\.\d\d', p)
        for row in p2:
            ws.write(r,0,row)
                    
w.save('price_list.xls')



From ajones1 at gmail.com  Wed Sep 20 11:05:19 2006
From: ajones1 at gmail.com (Adam Jones)
Date: 20 Sep 2006 08:05:19 -0700
Subject: pprint: "...thank small children who sleep at night."
In-Reply-To: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
References: <1158705003.101437.153620@h48g2000cwc.googlegroups.com>
Message-ID: <1158764719.565945.312490@i3g2000cwc.googlegroups.com>


Brian L. Troutwine wrote:
> The heading comment to pprint reads:
>
> #  This is a simple little module I wrote to make life easier.  I
> didn't
> #  see anything quite like it in the library, though I may have
> overlooked
> #  something.  I wrote this when I was trying to read some heavily
> nested
> #  tuples with fairly non-descriptive content.  This is modeled very
> much
> #  after Lisp/Scheme - style pretty-printing of lists.  If you find it
> #  useful, thank small children who sleep at night.
>
> Is the last sentence an obscure reference or in-joke? Can someone
> explain it? I don't get it.

My guess is that he had to write a pretty printer so his cursing and
general frustration and reading nasty nested tuples wouldn't wake the
kids.

-Adam



From jjl at pobox.com  Thu Sep  7 18:25:49 2006
From: jjl at pobox.com (John J. Lee)
Date: Thu, 07 Sep 2006 22:25:49 GMT
Subject: Testing a website with HTTPS login and cookies
References: <mailman.14.1157459879.5279.python-list@python.org>
	<1157464659.301510.303090@i3g2000cwc.googlegroups.com>
Message-ID: <87slj3mhzm.fsf@pobox.com>

"Sandra-24" <sandravandale at yahoo.com> writes:

> Hari Sekhon wrote:
> > If anybody knows how to do this could they please give me a quick
> > pointer and tell me what libraries I need to go read up on?
> > 
> 
> One word. Selenium. 

Didn't sound like a good fit for Selenium to me.  Selenium's great,
but if you want to test HTTP response codes, just test HTTP response
codes -- no need to drag your browser into it :-)


John


From kw at kevin-walzer.com  Fri Sep 15 10:42:32 2006
From: kw at kevin-walzer.com (Kevin Walzer)
Date: Fri, 15 Sep 2006 10:42:32 -0400
Subject: Question about pipes/os.popen
Message-ID: <2b07f$450abbba$4275d90a$23270@FUSE.NET>

I'm trying to structure a Python script that streams output over a pipe.

Here is my code:

import os

cmd = os.popen('echo foo | sudo -S /usr/sbin/tcpdump -en1')
cmd.read()

This returns output of "". I'm expecting the standard output of "tcpdump
-en1". How does one read unbuffered output over a pipe before the pipe
is closed in Python? Because I want the output to be updated in real
time, writing to a temporary file and then reading that data isn't
feasible.

I'm not sure what I'm doing wrong here.

-- 
Kevin Walzer
Poetic Code
http://www.kevin-walzer.com


From gagsl-py at yahoo.com.ar  Mon Sep 11 23:17:42 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 00:17:42 -0300
Subject: Reading config.ini in PythonWin.
In-Reply-To: <WSZKg.6289$bM.684@newsread4.news.pas.earthlink.net>
References: <mailman.10327.1157358134.27775.python-list@python.org>
	<nTYKg.2948$v%4.208@newsread1.news.pas.earthlink.net>
	<WSZKg.6289$bM.684@newsread4.news.pas.earthlink.net>
Message-ID: <7.0.1.0.0.20060912001535.038b2b80@yahoo.com.ar>

At Monday 4/9/2006 15:02, Dennis Lee Bieber wrote:

>         However, looking deeper... The same problem seems to be showing up
>using ConfigParser...
>         Odd... specifying a default on the .get() seems to override a
>default set on the instantiation AND overrides the value IN the file...
>But the defaults on the instantiation do not override a .get() without
>defaults.

Already reported as a bug: 
http://sourceforge.net/tracker/index.php?func=detail&aid=1090076&group_id=5470&atid=105470

>         I'd suggest using ConfigParser, if possible, rather than the win32ui
>functions as the former is portable, and does look to have a means of
>working...

Just don't use defaults to be safe...


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From info at egenix.com  Wed Sep 20 06:24:33 2006
From: info at egenix.com (eGenix Team: M.-A. Lemburg)
Date: Wed, 20 Sep 2006 12:24:33 +0200
Subject: ANN: eGenix mxODBC Zope Database Adapter 1.0.10 for Intel Mac OS
 X
Message-ID: <451116E1.90803@egenix.com>

________________________________________________________________________
ANNOUNCEMENT

                              EGENIX.COM

                     mxODBC Zope Database Adapter

                            Version 1.0.10

                 Usable with Zope and the Plone CMS.

                Available for Zope 2.3 through 2.10 on
            Windows, Linux, Mac OS X, Solaris and FreeBSD

________________________________________________________________________
INTRODUCTION

The eGenix mxODBC Zope Database Adapter allows you to easily connect
your Zope or Plone installation to just about any database backend on
the market today, giving you the reliability of the commercially
supported eGenix product mxODBC and the flexibility of the ODBC
standard as middle-tier architecture.

The mxODBC Zope Database Adapter is highly portable, just like Zope
itself and provides a high performance interface to all your ODBC data
sources, using a single well-supported interface on Windows, Linux,
Mac OS X, Solaris and FreeBSD.

This makes it ideal for deployment in ZEO Clusters and Zope hosting
environments where stability and high performance are a top priority,
establishing an excellent basis and scalable solution for your CMS.

________________________________________________________________________
NEWS

Our mxODBC Zope DA product is now available and supported on
both Intel and PPC Mac OS X versions.

________________________________________________________________________
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If you have already bought mxODBC Zope DA 1.0.x licenses, you can use
these license for the 1.0.10 version as well. There is no need to buy
new licenses. The same is true for evaluation license users.

________________________________________________________________________
MORE INFORMATION

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and download instructions, please visit our web-site:

    http://zope.egenix.com/

You can buy mxODBC Zope DA licenses online from the eGenix.com shop at:

    http://shop.egenix.com/


Enjoy,
-- 
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eGenix.com

Professional Python Services directly from the Source  (#1, Sep 20 2006)
>>> Python/Zope Consulting and Support ...        http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ...             http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
________________________________________________________________________

::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,FreeBSD for free ! ::::




From fakeaddress at nowhere.org  Thu Sep 28 07:42:12 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Thu, 28 Sep 2006 11:42:12 GMT
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <451b24a5@news.bezeqint.net>
References: <451b24a5@news.bezeqint.net>
Message-ID: <oyOSg.6189$GR.3367@newssvr29.news.prodigy.net>

efrat wrote:
>   I'm planning to use Python in order to teach a DSA (data structures 
> and algorithms) course in an academic institute. If you could help out 
> with the following questions, I'd sure appreciate it:
> 1. What exactly is a Python list?

It's almost exactly what the doc says (and exactly what the code
implements).

> If one writes a[n], then is the complexity Theta(n)?

No; as others have pointed out, it's O(1).

> If this is O(1), then why was the name "list" chosen?

Because it *is* a list: an ordered collection in which an
element might appear multiple times. It's also an extensible
array, but that's so more verbose.

> If this is indeed Theta(n), then what alternative should be 
> used? (array does not seem suited for teaching purposes.)

It's not Theta(n), and the array classes are fine for teaching.

> 2. Suppose I have some file example.py, and I'd like to incorporate it 
> **into** part of an HTML page with nice syntax highlighting and all the 
> shebang. Is there an easy way to do so?

Yes. In fact its probably easier, or at least no harder, than
making sense of what you mean there.

> (Sorry, but any Google query involving "Python" and "HTML" (with any 
> other additional terms) led to Python HTML processing libraries.)

Don't be sorry about about getting the info you need (whether
or not you realize it is the info you need).

> 3. Are there any useful links for Python/DSA education?

Yes, many. Python is fine for teaching data structures and algorithms.
Python's loosely-defined "duck typing" makes it pedagogically
inappropriate for some topics, but as far as you have described your
course, Python should work well.

> I found "Data 
> Structures and Algorithms with Object Oriented Design Patterns" 
> (http://www.brpreiss.com/books/opus7/html/book.html). It is a fine book, 
> but it is unsuitable: my students are electrical-engineers, and barely 
> know how to program; teaching them DSA, python, **and** stuff like the 
> visitor pattern seems impossible.

When I taught algorithms, I observed that my students arrived lacking
much of the background knowledge I would expect, but they more than
compensated by being so bright. The engineers did about as well as
comp-sci students. We all got blown away by a couple scary-smart math
majors.

You don't need to teach, or know, the visitor pattern. Deal with the
the fundamentals. There are two ways we describe specific computational
problems: output as a function of input, and abstract data type. Python
is great for both.


-- 
--Bryan


From vedran_dekovic at yahoo.com  Sun Sep  3 06:02:22 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 3 Sep 2006 03:02:22 -0700
Subject: ftputil protection
Message-ID: <1157277742.227101.45610@b28g2000cwb.googlegroups.com>

Hi,
For people who using ftputil:

Have ftputil any protection(SSL......) or any other protection?????









         THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



From donlingerfelt at cox.net  Wed Sep 13 21:56:23 2006
From: donlingerfelt at cox.net (Donlingerfelt)
Date: Wed, 13 Sep 2006 20:56:23 -0500
Subject: stock quotes
Message-ID: <bF2Og.230637$k%3.67439@dukeread12>

I would like to download stock quotes from the web, store them, do
calculations and sort the results.  However I am fairly new and don't have a
clue how to parse the results of a web page download.   I can get to the
site, but do not know how to request the certain data  need.  Does anyone
know how to do this?  I would really appreciate it.  Thanks.




From grante at visi.com  Thu Sep  7 09:26:39 2006
From: grante at visi.com (Grant Edwards)
Date: Thu, 07 Sep 2006 13:26:39 -0000
Subject: sending emails using python
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
	<slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <12g07gf97898rff@corp.supernews.com>

On 2006-09-07, Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:
> Tim Williams enlightened us with:
>> Can you send email via it using outlook express or a similar
>> POP3/IMAP mail client?
>
> Wouldn't you use a SMTP client to send email?

I would, but I don't use exchange server. :)

The one exchange server I used in the past didn't accept SMTP
mail.

-- 
Grant Edwards                   grante             Yow!  I have the power
                                  at               to HALT PRODUCTION on all
                               visi.com            TEENAGE SEX COMEDIES!!


From jon+usenet at unequivocal.co.uk  Mon Sep 25 11:54:26 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 15:54:26 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
	<slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
	<mailman.580.1159199466.10491.python-list@python.org>
Message-ID: <slrnehfuta.6tm.jon+usenet@snowy.squish.net>

In article <mailman.580.1159199466.10491.python-list at python.org>, Filip Salomonsson wrote:
>> Here's a point for you - the documentation for cgi.escape says that
>> the characters "&", "<" and ">" are converted, but not what they are
>> converted to.
> 
> If the documentation isn't clear enough, that means the documentation
> should be fixed.

Incorrect - documentation can and frequently does leave certain
behaviours undefined. This is deliberate and (among other things)
is to allow for the behaviour to change in future versions without
breaking backwards-compatibility.


From johnjsal at NOSPAMgmail.com  Thu Sep 28 10:22:30 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 14:22:30 GMT
Subject: remove the last character or the newline character?
In-Reply-To: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
References: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
Message-ID: <GUQSg.43$1n3.209@news.tufts.edu>

Daniel Mark wrote:

> Question one:
> Does python provide any function that can remove the last character of
> a string?
> I don't know whether or not the method I used is efficient

Doing fileName[-1] lets you access the last character, but I'm not sure 
about removing it since strings are immutable. It would still probably 
be something like you did.

> Question two:
> Does python provide any function that can remove the newline character
> from a string if it exists?

 >>> fileName = 'Perfect Setup.txt\n'
 >>> fileName.strip()
'Perfect Setup.txt'
 >>>

Or you can use lstrip() or rstrip() to remove just the left or right side.


From horpner at yahoo.com  Fri Sep 22 13:44:49 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 22 Sep 2006 19:44:49 +0200
Subject: Replacing line  in a text  file
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
Message-ID: <slrneh889u.1c8.horpner@FIAD06.norwich.edu>

On 2006-09-22, CSUIDL PROGRAMMEr <syedamjad_a at yahoo.com> wrote:
> Folks
> I am trying to read a file
> This file has a line containing string  'disable = yes'
>
> I want to change this line to 'disable = no'
>
> The concern here is that , i plan to take into account the white spaces
> also.
>
> I tried copying all file int list and then tried to manipulate that
> list
>
> But the search is not working
>
> Any answer

More code, less talk.

Seriously, posting your code and any error messages or unexpected
results you're getting would be helpful. That is, until such time
as Guido finalizes PyESP.

import PyESP
e = ESP.mindread(CSUIDL, "r")
# etc..

-- 
Neil Cerutti
Life is indeed precious, and I believe the death penalty helps
affirm this fact. --Edward Koch


From fperez.net at gmail.com  Wed Sep 20 22:25:27 2006
From: fperez.net at gmail.com (Fernando Perez)
Date: Wed, 20 Sep 2006 20:25:27 -0600
Subject: Interact with system command prompt
References: <1158588506.989070.257550@m7g2000cwm.googlegroups.com>
	<4n7ogmF8slojU1@uni-berlin.de>
	<1158590633.382840.307680@h48g2000cwc.googlegroups.com>
	<1158592025.137940.318950@i3g2000cwc.googlegroups.com>
Message-ID: <eest69$skd$1@sea.gmane.org>

billie wrote:

> Uhm... It seems that IPython got some problems:
> http://ipython.scipy.org/doc/manual/node12.html
> 
> In details:
> 
>>Note that this does not make IPython a full-fledged system shell. In
>>particular, it has >no job control, so if you type Ctrl-Z (under Unix),
>>you'll suspend pysh itself, not the >process you just started.
> 
>>What the shell profile allows you to do is to use the convenient and
>>powerful syntax of >Python to do quick scripting at the command line.

Note that these are simply limitations of what has been done out of
developer interest, not fundamental ones of design.  I'm not in the
business of writing system shells, so I (nor anyone else) never implemented
full-fledged job control.

If you do it and send it in, we'll be happy to include it.  And I suspect
IPython does a LOT of stuff already that you'll spend a fair amount of time
rewriting from scratch, so perhaps helping in to fill in the missing pieces
might be a good investment of your time.

Cheers,

f (ipython lead developer)



From carl at carldr.com  Mon Sep 18 10:52:39 2006
From: carl at carldr.com (Carl Drinkwater)
Date: Mon, 18 Sep 2006 15:52:39 +0100
Subject: [ANN] Code Golf Challenge : 1,000 Digits Of Pi
Message-ID: <450EB2B7.1070407@carldr.com>

Hi all,

Code Golf's 12th challenge has just been added to the site.  It asks you 
to calculate the first 1,000 digits of Pi - Something I'm sure most of 
you have thought about, but never done.  You can see the challenge at :

   http://codegolf.com/1000-digits-of-pi

For those who haven't heard of codegolf.com, it can be described as 
"allowing you to show off your code-fu by trying to solve coding 
problems using the least number of keystrokes."

The site currently supports Perl, PHP, Python and Ruby with Scheme to 
(hopefully) follow soon.  Your entries are automatically executed and 
scored - No need to wait for someone to validate your code.

Other challenges include implementing the Vigenere Cipher, Prime 
factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer.  All 
of the challenges are competitive but there is still scope to well in 
them, even if you're new to the site.

I hope some of you will find this interesting, and sorry for disturbing 
you if not!

Have fun,
Carl.


From dbraden at invalid.add  Wed Sep 13 05:42:48 2006
From: dbraden at invalid.add (David J. Braden)
Date: Wed, 13 Sep 2006 09:42:48 GMT
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>
	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>
Message-ID: <soQNg.750$TV3.195@newssvr21.news.prodigy.com>

Thorsten Kampe wrote:
> * David J. Braden (2006-09-12 18:35 +0100)
>> I can run Python in command-line mode fine from the cygwin shell; the 
>> cygwin distribution also includes IDLE, which is apparently completely 
>> installed, yet I am unable to get IDLE running. When I double-click 
>> idle.bat (or idle.pyw) I am prompted to locate the program's creator. 
>> Darn if I know what it is. If I try to invoke IDLE from cygwen bash, I 
>> get "unable to remap c:\cygwin\bin\tk84.dll to same address as parent".
> 
> rebaseall
>  
>> Also - could someone plz recommend some useful environment variables for 
>> Python on Windows? If I were to specify PYTHONDOC, should I use Unix or 
>> Windows notation (e.g., "/" or "\").
> 
> You can set them under Windows in Windows notation or in your shell
> startup file in Unix notation.
> 
> Thorsten

Thanks, Thorsten. I assume you mean type in "idle rebaseall" (?) - seems 
to bring up a window for a split second, then come back with same error 
messages I had before. I cannot find in the IDLE doc any reference on 
how to get it going under cygwin; could you please point me towards a 
less-than-terse set of instructions?

Regards,
Dave B


From sigzero at gmail.com  Sat Sep  2 21:37:56 2006
From: sigzero at gmail.com (Robert Hicks)
Date: 2 Sep 2006 18:37:56 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <1157214112.691313.282700@p79g2000cwp.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
	<edaf0s$oc3$1@newsreader2.netcologne.de>
	<1157214112.691313.282700@p79g2000cwp.googlegroups.com>
Message-ID: <1157247476.142774.55470@m79g2000cwm.googlegroups.com>


filippo wrote:
> Claudio Grondi ha scritto:
>
> (megasnip)
>
> I caught your point of view. I start reading a book on wxpython to
> understand if it can help to solve my problems. At the same time I will
> port my program to Python/Tk in order to have a faster first beta
> release.
>
> Thanks for your explanation.
>
> Filippo

Have a look at wxGlade if you want to do some windowing prototyping:

wxglad.sf.net

HTH

Robert



From gerold.penz at tirol.utanet.at  Fri Sep  1 03:26:49 2006
From: gerold.penz at tirol.utanet.at (Gerold Penz)
Date: Fri, 01 Sep 2006 09:26:49 +0200
Subject: HTTPS Login
In-Reply-To: <mailman.10192.1157039674.27775.python-list@python.org>
References: <mailman.10192.1157039674.27775.python-list@python.org>
Message-ID: <ed8nbi$vio$1@newsreader2.utanet.at>

Tom Grove schrieb:
> I am trying to login to a secure website and I am having some difficulty 
> understanding the process.

Hi Tom!

This code should do what you want:
http://www.python-forum.de/post-18148.html#18148

Regards,
Gerold
:-)

-- 
________________________________________________________________________
Gerold Penz - bcom - Programmierung
     gerold.penz at tirol.utanet.at | http://gerold.bcom.at | http://sw3.at
Ehrliche, herzliche Begeisterung ist einer der
     wirksamsten Erfolgsfaktoren. Dale Carnegie


From rhamph at gmail.com  Mon Sep  4 21:34:05 2006
From: rhamph at gmail.com (Rhamphoryncus)
Date: 4 Sep 2006 18:34:05 -0700
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <mailman.10317.1157306773.27775.python-list@python.org>
References: <edcrms$auj$1@news.uit.no>
	<mailman.10304.1157280160.27775.python-list@python.org>
	<edefl6$10dc$1@news.uit.no> <edeiqj$11ef$1@news.uit.no>
	<mailman.10309.1157291622.27775.python-list@python.org>
	<1hl2xuf.1we7p812kbt88N%aleax@mac.com>
	<mailman.10317.1157306773.27775.python-list@python.org>
Message-ID: <1157420045.756716.20610@p79g2000cwp.googlegroups.com>

Felipe Almeida Lessa wrote:
> 2006/9/3, Alex Martelli <aleax at mac.com>:
> > Reflecting on the OP's use case, since all connections are forever being
> > made to the same 16 servers, why not tweak thinks a bit to hold those
> > connections open for longer periods of time, using a connection for many
> > send/receive "transactions" instead of opening and closing such
> > connections all of the time?  That might well work better...
>
> Connecting to 16 differente servers per second gives a very poor
> performance, right? There's some overhead in creating TCP connections,
> even on fast networks and computers. Am I right?

I can think of four costs you would invoke by not reusing connections:
1) extra sockets.  This is what the OP experienced.
2) startup/teardown bandwidth.  More packets need to be sent to start
or end a connection
3) startup latency.  It takes some time to create a usable connection.
4) rampup time.  TCP/IP doesn't dump everything on the network as soon
as a connection is opened.  It "feels it out", giving it more, then a
little more, until it finds the limit.  If you're sending multiple
files (small ones especially!) you'll likely hit this.

So yeah, bottom line, it IS faster and more efficient to reuse
connections.  If you're doing a protocol for sending files you'll want
to do it.

--
Adam Olsen, aka Rhamphoryncus



From g.brandl-nospam at gmx.net  Tue Sep 19 04:46:48 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 19 Sep 2006 10:46:48 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <4n9nb4F99lbqU2@uni-berlin.de>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
	<eeo2bh$q6$1@news.albasani.net> <4n9nb4F99lbqU2@uni-berlin.de>
Message-ID: <eeoapp$7sg$1@news.albasani.net>

Diez B. Roggisch wrote:
>>>
>>> I think '__metaclass__ = whatever' affects only the creation of 
>>> classes that
>>> would otherwise be old-style classes?
>> 
>> Wrong.
>> 
>> If you set __metaclass__ = type, every class in that module will be 
>> new-style.
>> 
>> If you set __metaclass__ = MyClass, and MyClass inherits from <type>, every
>> class in that module will be new-style and have MyClass as a metaclass.
>> 
>> The usual way to create new-style classes, inheriting from object or 
>> another
>> new-style class, works because if no __metaclass__ is defined, the first
>> base class's class is taken as the metaclass.
> 
> 
> I was under that impression, too. But this behaves different (py2.4):

[...]

> deets$ python2.4 /tmp/test.py
> (<class '__main__.meta'>, 'OldStyle', (), {'__module__': '__main__'})
> deets$
> 
> I was astonished to see that. Any explanation?

Yes. I was wrong, the order of lookup is reversed. This first base class's
class is used before the global __metaclass__.

So what Damjan said is correct: global __metaclass__ is only usable for
classes that don't have bases.

Whether this is desirable is another question...

Georg


From ldo at geek-central.gen.new_zealand  Mon Sep 25 23:53:34 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 15:53:34 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<ef5lb9$h1k$2@lust.ihug.co.nz><ef5ncc$uus$1@news.albasani.net><mailman.524.1159095305.10491.python-list@python.org>
	<ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
Message-ID: <efa864$rbf$1@lust.ihug.co.nz>

In message <mailman.559.1159188171.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Lawrence D'Oliveiro wrote:
> 
>>> Georg Brandl wrote:
>>>
>>>> A function is broken if its implementation doesn't match the
>>>> documentation.
>>>
>>> or if it doesn't match the designer's intent.  cgi.escape is old enough
>>> that we would have noticed that, by now...
>>
>> _We_ certainly have noticed it.
> 
> you're not the designer...

I don't have to be. Whoever the designer was, they had not properly thought
through the uses of this function. That's quite obvious already, to anybody
who works with HTML a lot. So the function is broken and needs to be fixed.

If you're worried about changing the semantics of a function that keeps the
same "cgi.escape" name, then fine. We delete the existing function and add
a new, properly-designed one. _That_ will be a wake-up call to all the
users of the existing function to fix their code.


From dbraden at invalid.add  Tue Sep 12 13:35:36 2006
From: dbraden at invalid.add (David J. Braden)
Date: Tue, 12 Sep 2006 17:35:36 GMT
Subject: Newbie - ? get IDLE going on cygwin
Message-ID: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>

Hi, (from a total newbie w/ Python. Oh well.)

I can run Python in command-line mode fine from the cygwin shell; the 
cygwin distribution also includes IDLE, which is apparently completely 
installed, yet I am unable to get IDLE running. When I double-click 
idle.bat (or idle.pyw) I am prompted to locate the program's creator. 
Darn if I know what it is. If I try to invoke IDLE from cygwen bash, I 
get "unable to remap c:\cygwin\bin\tk84.dll to same address as parent".

Obviously I don't know Unix (heck, any OS at a deep level), so this is 
likely what creates the fog. Sorry.

Also - could someone plz recommend some useful environment variables for 
Python on Windows? If I were to specify PYTHONDOC, should I use Unix or 
Windows notation (e.g., "/" or "\").

Many thanks for helping me bootstrap into this.

Dave B


From paddy3118 at netscape.net  Thu Sep  7 22:35:33 2006
From: paddy3118 at netscape.net (Paddy)
Date: 7 Sep 2006 19:35:33 -0700
Subject: Positive lookahead assertion
In-Reply-To: <45007616$0$19655$88260bb3@free.teranews.com>
References: <45006ede$0$19734$88260bb3@free.teranews.com>
	<1157660939.252322.135820@e3g2000cwe.googlegroups.com>
	<45007616$0$19655$88260bb3@free.teranews.com>
Message-ID: <1157682933.859637.95160@m73g2000cwd.googlegroups.com>


tobiah wrote:
> >> Posted via a free Usenet account from http://www.teranews.com
> > Its all about context. If you want to match something but only if it
> > precedes something else, then you follow the regular expression for
> > 'something' by the regular expression for 'something else' where
> > `something else` is enclosed by (?=...)
> >
> > The regular expression engine will surreptitiously check that
> > 'something else' does indeed follow, before returning any match of
> > 'something'.
>
>
> How would this differ from just
>
> re.search('somethingsomething else')
>

Notice that in the last search below, something else needs to follow,
but is not consumed.

>>> import re
>>> re.search(r'something', ' somethingsomethingsomething else').span()
(1, 10)
>>> re.search(r'somethingsomething else', ' somethingsomethingsomething else').span()
(10, 33)
>>> re.search(r'something(something else)', ' somethingsomethingsomething else').span()
(10, 33)
>>> re.search(r'something(?=something else)', ' somethingsomethingsomething else').span()
(10, 19)
>>> 

- Paddy.



From pavlovevidence at gmail.com  Thu Sep 21 11:29:11 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 21 Sep 2006 08:29:11 -0700
Subject: itertools.count(-3)
In-Reply-To: <1158850262.700169.306140@b28g2000cwb.googlegroups.com>
References: <1158850262.700169.306140@b28g2000cwb.googlegroups.com>
Message-ID: <1158852550.993113.37030@i3g2000cwc.googlegroups.com>


bearophileH... at lycos.com wrote:
> itertools.count docs say:
> Does not currently support python long integers.
> Note, count() does not check for overflow and will return negative
> numbers after exceeding sys.maxint. This behavior may change in the
> future.
>
> But it seems it doesn't support negative numbers too:
>
> >>> from itertools import count, islice
> >>> list(islice(count(), 0, 5))
> [0, 1, 2, 3, 4]
> >>> list(islice(count(10), 0, 5))
> [10, 11, 12, 13, 14]
> >>> list(islice(count(-3), 0, 5))
> [4294967293L, 4294967294L, 4294967295L, 0, 1]
> >>> def count2(n=0):
> ...     while True:
> ...         yield n
> ...         n += 1
> ...
> >>> list(islice(count2(-3), 0, 5))
> [-3, -2, -1, 0, 1]
>
> If this isn't a bug, then maybe docs can tell about this too.

Seems like a regression to me.  itertools was documented as taking a
sequence of integers, not necessarily positive integers.  It worked on
Python 2.4.

Looking at the source (from 2.5 rc2), it looks like they accidentally
used PyInt_FromSize_t rather than PyInt_FromSSize_t in the count
iterator.  size_t is unsigned, of course, hence the large negative
numbers.


Carl Banks



From ethanton at gmail.com  Mon Sep  4 05:23:47 2006
From: ethanton at gmail.com (kryten21)
Date: 4 Sep 2006 02:23:47 -0700
Subject: Newbie XML Output question
Message-ID: <1157361827.059520.44300@h48g2000cwc.googlegroups.com>

Hi,

I was wondering if someone could help me with a problem I've been
having with mod-python and a javascript application I'm running.  When
I run a GET on the actual XML file from the javascript, I can easily
parse the file.  However, when I use a mod-python handler and run this
code:

LOCAL_FILE = 'htdocs/ethan/info.xml';

def get_request(req):
	if req.method == 'GET':
		req.content_type = "text/xml"
		req.sendfile(LOCAL_FILE)
		req.write(file)
                return apache.OK

The file is sent but the same code that parsed the actual file can't
parse what is sent through this request.  Is there some kind of special
formatting that is required to properly send back XML to a javascript
xmlhttprequest()?

Any help would be greatly appreciated,

Ethan



From gregpinero at gmail.com  Sat Sep 23 17:02:16 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Sat, 23 Sep 2006 17:02:16 -0400
Subject: Reverse a String?
Message-ID: <312cfe2b0609231402y4241d7cep36f1a4a73a82ead8@mail.gmail.com>

Is my mind playing tricks on me? I really remember being able to
reverse a string as in:

text='greg'
print text.reverse()
>> 'gerg'

Is it possible thats in some Python install and not in others?  I just
switched to linux.

In any case, can we get that added?

Here's my workaround for now:
def reverse(text):
    return ''.join([text[i] for i in range(len(text)-1,-1,-1)])



-- 
Gregory Pi?ero
Chief Innovation Officer
Blended Technologies
(www.blendedtechnologies.com)


From claudio.grondi at freenet.de  Tue Sep 12 12:37:46 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Tue, 12 Sep 2006 18:37:46 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <1158073922.601548.278280@m73g2000cwd.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158015248.563755.32980@p79g2000cwp.googlegroups.com>
	<1158073922.601548.278280@m73g2000cwd.googlegroups.com>
Message-ID: <ee6noq$qdn$1@newsreader2.netcologne.de>

Omar wrote:
> thanks for all the responses...
> 
> I'm liking the way ulipad and scite work
> 
> I'd switch to ulipad entirely if I canget to recognize the python
> interpreter in the preferences menu.  I can't seem to figure that out.
It is usually correctly set.
Just start Preferences, go to Python tab and push the button [Setup 
Python interpreter]. You should see the default interpreter setting and 
modify it if necessary (button [modify]).
What is the problem with it exactly?
> 
> Also, I'm highly interested in getting the snippets manager working.
What is your problem with it?
> 
> any ideas?
I suggest you play a bit around with the menu items dedicated to 
Snippets. Don't forget to click on the visible entries to get the other 
content related to them visible (maybe this is your problem - you expect 
to see more, but have to select first - not very intuitive in case you 
have generated only one entry and wonder why its details are not visible 
in the other text boxes). If there are no any entries just [Add] some. 
And to see how to work with them go to menu 'Windows' and 'Open Snippets 
Window') to get the available ones displayed (I have got them working 
knowing nothing about them before while I was writing my first response 
here, so it can't be that hard ;)
> 
If the above does not help, best email directly the author of UliPad 
(and greet him from me :) and describe your problem in a very easy to 
understand and as simple English as possible.
Usually you will get a very fast and a very informative response (but 
please don't care much about correct English). Also bug reports (or best 
directly the patches) are very welcome. Best if you were able to provide 
your own notes from what you have learned as a kind of contribution to a 
better future documentation.
If nothing suddenly changed, I can assure you, that you can't get 
anywhere else better support directly from the author as it is currently 
available for UliPad. And as it is all Python, so you are free to learn 
from it or try out your own ideas for extensions.

Claudio Grondi


From venkatbo at yahoo.com  Thu Sep 14 23:28:31 2006
From: venkatbo at yahoo.com (venkatbo at yahoo.com)
Date: 14 Sep 2006 20:28:31 -0700
Subject: how to specify path to .py modules during install...
Message-ID: <1158290911.848406.3000@d34g2000cwd.googlegroups.com>

Hi folks,

On i686 Linux, I would like to place my python modules as:
   <base_dir>/src/py-modules/*.py
and use the cmd from <base_dire>:
   ...base_dir]$  python  src/py-modules/setup.py  install
--prefix=<base_dir>/usr
so the .py files and the corresponding compiled .pyc files are at:
   <base_dir>/usr/lib/python2.4/site-packacges/*.py[c]

Its unclear from the documentation, how I could specify the
location of the *.py files, ie:
   <base_dir>/src/py-modules/
in the installation command:
   ...base_dir]$  python  src/py-modules/setup.py  install
--prefix=<base_dir>/usr

I can specify the destination of the module/compiled files,
but how do I specify the the path to the .py files. I get the
"file not found error".

Of course, if I cd to:
   <base_dir>/src/py-modules/
and run the command, its able to find all the modules listed
in setup.py:py_modules[.....] entry.

This is one among many other modules (C/py) being built
while at the <base_dir>...

Thanks,
/venkat



From jaysherby at gmail.com  Sun Sep 17 11:08:56 2006
From: jaysherby at gmail.com (Jay)
Date: 17 Sep 2006 08:08:56 -0700
Subject: mp3 file length in time
Message-ID: <1158505736.188862.223640@h48g2000cwc.googlegroups.com>

In python, I know there are a couple of modules for getting id3 info,
but what about the length of an mp3 file in time?  Is there a way to
aquire that info?  Most of my MP3s don't have id3 tags.  I don't care
for them.  But I need to use python to get their file lengths.  How?



From vegan16 at accesscomm.ca  Sat Sep 16 15:49:06 2006
From: vegan16 at accesscomm.ca (malibu)
Date: 16 Sep 2006 12:49:06 -0700
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of
	Zion
In-Reply-To: <5nXOg.2569$vi3.1719@bignews3.bellsouth.net>
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
	<5nXOg.2569$vi3.1719@bignews3.bellsouth.net>
Message-ID: <1158436146.390272.48300@i42g2000cwa.googlegroups.com>


SteveF wrote:
> <pope_ratzinger_benedict at india.com> wrote in message
> news:1158425541.091561.152690 at i42g2000cwa.googlegroups.com...
> > Do not bury your head in the sand ... Do not practice denial ... It
> > will only bring you to terrible shame and grief ... Do not be afraid of
> > saying the truth ... Do not be afraid of death ... God will take care
> > of you and your kins as he took care of the flock of Abraham, Moses and
> > Jesus.
> >
> > Here you will find all the truth, movies, audios and proof for your
> > eyes to see (even the swiss are beginning to doubt 911) :
> >
>
> [snip]
>
> I just want to know how long it takes you to type this out while wearing a
> strait jacket.  Do you hold the pencil in your mouth and peck away?  Or does
> your mouth get tired and you have someone stick the pencil up your nose?
>
> Steve.
Hey Steve
Did you just pull your head
out of your ass to type this?



From paul at boddie.org.uk  Wed Sep 13 08:15:55 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 13 Sep 2006 05:15:55 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
	<ee8ovi$5k1$1@wake.carmen.se>
Message-ID: <1158149755.247023.249990@d34g2000cwd.googlegroups.com>

Magnus Lycka wrote:
> Paul Boddie wrote:
> > To be fair, that text originates in section 12.3, referring to input
> > parameters to procedures. Meanwhile, the following text (subclause
> > 13.8, "<insert statement>") appears to be more pertinent:
> >
> > "If the data type of the target identified by the i-th <column name> is
> > an exact numeric type, then the data type of the i-th item of the
> > <insert statement> shall be an exact numeric type."
>
> And SQLite behaves as expected if you provide a numeric value
> to a numeric column, right? In other words, it complies to that
> clause.

My 30 seconds' worth of consideration suggests that you have to
consider the matter the other way round: if the data type of some
column is an exact numeric type, then you should be providing a value
of such a type, not a string, for example.

> Does the spec state how the database engine should behave if the
> client breaks the requirements for insert? I guess that this is
> implementation dependent.

Well, if the client is free not to bother signalling anything about
erroneous value types, one has to wonder why there's so much of a
specification.

Paul



From kondal04 at gmail.com  Tue Sep 12 00:05:46 2006
From: kondal04 at gmail.com (kondal)
Date: 11 Sep 2006 21:05:46 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
Message-ID: <1158033946.844515.13360@m73g2000cwd.googlegroups.com>

Licheng Fang wrote:
> Basically, the problem is this:
>
> >>> p = re.compile("do|dolittle")
> >>> p.match("dolittle").group()
> 'do'
>
> Python's NFA regexp engine trys only the first option, and happily
> rests on that. There's another example:
>
> >>> p = re.compile("one(self)?(selfsufficient)?")
> >>> p.match("oneselfsufficient").group()
> 'oneself'
>
> The Python regular expression engine doesn't exaust all the
> possibilities, but in my application I hope to get the longest possible
> match, starting from a given point.
>
> Is there a way to do this in Python?

This is the way the regexp works python doesn't has anything to do with
it. It starts parsing the data with the pattern given. It returns the
matched string acording the pattern and doesn't go back to find the
other combinations.

So to get all the combinations you would probably require to give
different patterns each time.



From onurb at xiludom.gro  Fri Sep 29 08:24:21 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 29 Sep 2006 14:24:21 +0200
Subject: windev vs python SOS
In-Reply-To: <1159526064.928152.121550@c28g2000cwb.googlegroups.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159399077.248154.160800@d34g2000cwd.googlegroups.com>
	<451b8a2e$0$8876$636a55ce@news.free.fr>
	<1159526064.928152.121550@c28g2000cwb.googlegroups.com>
Message-ID: <451d1075$0$23128$626a54ce@news.free.fr>

aaaWindev at gmail.com wrote:
> Hi Bruno,

Heck. PC-Soft marketing droids are pursuing us even here now.

> Let me guess, your favorite book is the "I HATE THE FRENCH OFFICIAL
> HANDBOOK". 

je suis fran?ais, pauvre semoule.

> People here deserve a more objective opinion.

"objective" ? Lol.

> Here you can find what WinDev users have to say about WinDev
> 
> http://www.windev.com/pcsoft/testimonials/

yes, very objective...

> There are more testimonials here (in french).
> 
> http://www.pcsoft.fr/pcsoft/120pages/html/porsche.htm

just as objective.

> By the way, Python is a great programming language. What is cool about
> WinDev is that the language is closely embedded with the GUI.

The one and only  "cool" thing about Windev is that I'll never have to
use this piece of shit again.

> For
> example, to select a line in a browsing table, you may just write:
> MyTable = 15 as if MyTable was a variable (it is a powerfull widget
> indeed, with searching, sorting, export to Excel, and so on).

Yeah, great. And you forgot to say that it generates the whole
application by itself, and even make coffee for the programmer.

NB : transmitted to groups-abuse at google.com who will appreciate if OT
commercial adds are welcomes here.

> --
> PatBiker
> 


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From hancock.robert at gmail.com  Fri Sep 22 17:03:08 2006
From: hancock.robert at gmail.com (milan_sanremo)
Date: 22 Sep 2006 14:03:08 -0700
Subject: Python 2.5 Installation and Tkinter
Message-ID: <1158958988.315609.242040@h48g2000cwc.googlegroups.com>

Under Solaris 10 I installed tcl 8.5 and tk8.5 and they work just fine.
 I built both with
./configure -prefix /usr/local/python/lib

I then set LD_RUN_PATH to /usr/local/python/lib and ran the ./configure
for Python 2.5 with no arguments.  When I run make, it states:

INFO: Can't locate Tcl/Tk libs and/or headers
running build_scripts

I verified that the libraries are in /usr/local/python/lib.  If I run
/usr/local/python/bin/wish8.5 it works.

My path incudes /usr/local/python/bin:/usr/local/python/lib.

How do I get Python to recognize Tcl/Tk for the build?



From http  Wed Sep  6 05:14:28 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 02:14:28 -0700
Subject: threading support in python
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
Message-ID: <7xr6ypjr0r.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
>  Throwing them out without careful consideration is a bad
>idea--ref-counting is _not_ simply one GC implementation among many, it
>actually offers useful semantics and the cost of giving up those
>semantics should be considered before throwing out refcounting.

It's too late to consider anything before throwing out refcounting.
Refcounting has already been thrown out (in Jython, IronPython, and
maybe PyPy).  It's just an implementation artifact of CPython and MANY
other language implementations have gotten along perfectly well
without it.

> (1) I think is here to stay, if you're going to tell programmers that
> their destructors can't make program-visible changes (e.g. closing the
> database connection when a dbconn is destroyed), that's a _huge_ change
> from current practice that needs serious debate.

We had that debate already (PEP 343).  Yes, there is some sloppy
current practice by CPython users that relies on the GC to close the
db conn.  That practice already fails in several other Python
implementations and with PEP 343, we now have a clean way to fix it.
I don't understand why you're so fixated on keeping the sloppy method
around.  The benefit is marginal at best.  If you want stack-like
deallocation of something, ask for it explicitly.


From swell at netcourrier.com  Mon Sep  4 06:43:34 2006
From: swell at netcourrier.com (swell at netcourrier.com)
Date: 4 Sep 2006 03:43:34 -0700
Subject: Broadcast server
In-Reply-To: <1hl391s.x8y3epjnp978N%aleax@mac.com>
References: <1157015655.323891.154720@p79g2000cwp.googlegroups.com>
	<44f77d3c$0$75041$14726298@news.sunsite.dk>
	<1157102040.703559.322090@p79g2000cwp.googlegroups.com>
	<1hl391s.x8y3epjnp978N%aleax@mac.com>
Message-ID: <1157366614.779456.23620@p79g2000cwp.googlegroups.com>

Thx Alex,
  This is exactly what i want to look at . Async will definitely be
something i will look at . Does it make sense to mix async and threaded
server ( let say a threaded server accepting max 10 connections and
dealing with client request asynchronously ). Does it sounds you a good
design.

Of course i will have a look a twisted that sounds me doing all the job
( for sure better that i can do ) .

Thx
Manu



From news at dogstar.ukfsn.org  Thu Sep 28 14:12:14 2006
From: news at dogstar.ukfsn.org (John Martin)
Date: Thu, 28 Sep 2006 19:12:14 +0100
Subject: pythonol
References: <pan.2006.09.27.17.52.35.815812@dogstar.ukfsn.org>
	<1159393296.231439.174990@i42g2000cwa.googlegroups.com>
Message-ID: <pan.2006.09.28.18.12.13.822489@dogstar.ukfsn.org>

On Wed, 27 Sep 2006 14:41:36 -0700, George Sakkis wrote:

> John Martin wrote:
> 
>> 'pythonol' is a program for learning spanish. I think it's a really great
>----------------- snip ---------------------------------------
>
>> ------------------------------------------------------------------
>> Does anything stand out which might be fixable?
> 
> Search and replace all "EXPAND+FILL" with "EXPAND|FILL" (vertical bar
> instead of plus sign). This solves the specific error, though I've no
> idea what else may be broken.
> 
> George

Brilliant! I still get lots of deprecation warnings about gtk but the
program runs perfectly.

Many thanks George and all you python peeps.

-- 
John




From jan.dries at dcube-resource.be  Thu Sep 14 17:14:02 2006
From: jan.dries at dcube-resource.be (Jan Dries)
Date: Thu, 14 Sep 2006 23:14:02 +0200
Subject: lxml Windows binaries
In-Reply-To: <4509bb9e$0$5150$9b4e6d93@newsspool1.arcor-online.net>
References: <mailman.73.1158224324.10491.python-list@python.org>
	<4509bb9e$0$5150$9b4e6d93@newsspool1.arcor-online.net>
Message-ID: <4509C61A.1060702@dcube-resource.be>

Stefan Behnel wrote:
> Jan Dries wrote:
>> I'm trying to find Windows binaries for lxml. The cheeseshop is supposed
>> to have such binaries, but I can't find them.
>> Does anyone know where I might find such binaries?
> 
> http://cheeseshop.python.org/pypi/lxml
> 
> Sometimes takes a day longer, but our helpful egg contributors are pretty
> reliable.

Oops, I hadn't noticed that a new version of lxml was released yesterday.

> 
> BTW, there's also a mailing list for lxml, it's always a good idea to discuss
> lxml related stuff there.

Will keep that in mind next time I have an issue.

Thanks,
Jan



From martin at v.loewis.de  Sun Sep 17 03:14:23 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 17 Sep 2006 09:14:23 +0200
Subject: high level, fast XML package for Python?
In-Reply-To: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
Message-ID: <450CF5CF.3090109@v.loewis.de>

Gleb Rybkin schrieb:
> I searched online, but couldn't really find a standard package for
> working with Python and XML -- everybody seems to suggest different
> ones.
> 
> Is there a standard xml package for Python? Preferably high-level, fast
> and that can parse in-file, not in-memory since I  have to deal with
> potentially MBs of data. 

It seems that everybody is proposing libraries that use in-memory
representations. There is a standard xml package for Python, it's
called "xml" (and comes with the standard library). It contains a
SAX interface, xml.sax, which can parse files incrementally.

Regards,
Martin


From onurb at xiludom.gro  Fri Sep 22 05:00:57 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 22 Sep 2006 11:00:57 +0200
Subject: Don't use regular expressions to "validate" email addresses (was:
	Ineed some help with a regexp please)
In-Reply-To: <mailman.434.1158888340.10491.python-list@python.org>
References: <mailman.434.1158888340.10491.python-list@python.org>
Message-ID: <4513a64a$0$905$636a55ce@news.free.fr>

bruce wrote:
> so ben...
> 
> if you were creating a web app with an email form... rather than try to
> check if the email is valid...

Ever bothered to read the relevant rfc ?

> you'd create something to allow anyone to
> potentially spam the hell out of a system...

I'm sorry, but I fail to see how validating (or not) an email address
could prevent using a webmail form for spamming. Care to elaborate ?

> my two cents worth... try to verify/validate that the email is valid, 

If it doesn't have an @ somewhere in it, it's not a valid mail address.
Else, it may or not be a valid email address - and then the only
reliable way to know is to send a mail to that address.

> and
> possibly belongs to the user...

How do you intend to check this ?

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From frank at chagford.com  Tue Sep 26 10:56:00 2006
From: frank at chagford.com (Frank Millman)
Date: 26 Sep 2006 07:56:00 -0700
Subject: odbc DbiDate date conversion
In-Reply-To: <z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
	<1159278687.772964.245190@b28g2000cwb.googlegroups.com>
	<z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
Message-ID: <1159282560.427973.173510@k70g2000cwa.googlegroups.com>


flupke wrote:
> Frank Millman schreef:
> > flupke wrote:
> >> I'm using a solid DB and i'm accessing it via the odbc module
> >> (activepython).
> >> I get a DbiDate object returned but i don't find a way to decently print
> >> it or get a format like %d/%m%/%y.
> >>
> >
> > I convert it to a datetime() instance, like this -
> >
> >     mydate = datetime.datetime.fromtimestamp(int(dbidate))
> >
> > Then I can use all the functionality of the datetime module.
> >
> > HTH
> >
> > Frank Millman
> >
>
> Hi Frank,
>
> i tried it and i end up with this:
>
> >>> mydate = datetime.datetime.fromtimestamp(int(birthd))
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: timestamp out of range for platform localtime()/gmtime()
> function
>

Well waddyaknow - I get exactly the same, for dates earlier than
1970-01-02. Thanks for finding a bug that would have bitten me sooner
or later.

I will do some investigation. If I find an answer I will post it here,
unless some kind soul saves me the trouble and beats me to it.

Frank



From gagsl-py at yahoo.com.ar  Thu Sep 28 05:05:38 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 06:05:38 -0300
Subject: Can string formatting be used to convert an integer to its
	binary form ?
In-Reply-To: <efg10i$olr$1@mlucom4.urz.uni-halle.de>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
Message-ID: <7.0.1.0.0.20060928055235.0569fe40@yahoo.com.ar>

At Thursday 28/9/2006 05:22, Mirco Wahab wrote:

> > String formatting can be used to converting an integer to its octal or
> > hexadecimal form:
> >  >>> a = 199
> >  >>> "%o" % a
> > '307'
> >  >>> "%x" % a
> > 'c7'
> >
> > But, can string formatting be used to convert an integer to its binary
> > form ?
>
>   a = 199
>   a_bin_str = pack('L', a)

Notice that the OP was looking for another thing, given the examples. 
Perhaps a better wording would have been "how to convert an integer 
to its base-2 string representation".


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From grante at visi.com  Fri Sep 15 15:56:09 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 19:56:09 -0000
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
	<4mv51sF7t5lmU1@uni-berlin.de> <12glesm56ghquc4@corp.supernews.com>
	<mailman.136.1158334482.10491.python-list@python.org>
	<12gljhfc4f81p97@corp.supernews.com>
	<mailman.142.1158342806.10491.python-list@python.org>
Message-ID: <12gm1apgtf82h9a@corp.supernews.com>

On 2006-09-15, Steve Holden <steve at holdenweb.com> wrote:

>> I don't know what "multi-homing problems are either".
>> Apparently there must be some ftp clients that require the
>> source port for the data connection to be port 20.
>> 
>> The RFC is pretty vague. It does say the server and clinet but
>> must "support the use of the default data port [port 20]" or
>> something like that. But, it's not all all clear to me what
>> that is supposed to mean.  My reading is that they must support
>> the default port as the destination port for a data connection
>> untill it's been changed by receipt of a PORT command.

> Standard (port-mode) FTP has the client send a PORT command to the 
> server when data transfer is required. The server then makes a 
> connection to the indicated port from its own port 20.

I agree that's certainly the way it seems to work.  When I read
the RFC, I couldn't tell if it intended to require that the
source port be 20.  It almost sounded like it meant that the
data connection destination was 20 unless a PORT command was
received, but that wouldn't make much sense.

> Passive mode was introduced so that the server is not required
> to make a connection inbound to the client, as more and more
> firewalls were interposed at the perimeter of networks,
> blocking the inbound requests to clients from servers.
>
> I suspect that the reason for the comment is simply that the
> connection out from the server is being bound to the same
> interface (*IP address*) that the inbound request arrived on.
> That way it's less likely that the data stream will be routed
> differently from the control (port 21) stream.

I think that's probably right.  It just dawned on me that
"multi-homed" refers to having more than one network interface.

-- 
Grant Edwards                   grante             Yow!  Yow!! That's a GOOD
                                  at               IDEA!! Eating a whole FIELD
                               visi.com            of COUGH MEDICINE should
                                                   make you feel MUCH BETTER!!


From benwei at veriwave.com  Fri Sep  8 20:04:32 2006
From: benwei at veriwave.com (Ben Weintraub)
Date: Fri, 08 Sep 2006 17:04:32 -0700
Subject: Disabling modules using Modules/Setup
Message-ID: <1157760272.8561.27.camel@localhost>

Hello all,

I'm trying to cross-compile Python and I've gotten the compilation
working, but I would like to disable many of the modules from building
or installing.  I've read through the help in Modules/Setup and I see
how it can be used to override setup.py for specifying where things are,
but I have not been able to figure out a way to have it disable a
specific module altogether.  Is this possible?

I also found the disabled_module_list variable in setup.py.  Is this the
preferred method of disabling certain modules altogether, as opposed to
Modules/Setup?

Thanks so much,
Ben



From forman.simon at gmail.com  Sun Sep  3 13:44:06 2006
From: forman.simon at gmail.com (forman.simon at gmail.com)
Date: 3 Sep 2006 10:44:06 -0700
Subject: str.isspace()
References: <1157300448.956962.24510@i42g2000cwa.googlegroups.com>
Message-ID: <1157305446.355168.153750@p79g2000cwp.googlegroups.com>

bearophileHUGS at lycos.com wrote:
> Are you using the str.isspace() method? I don't use it, so if most
> people don't uses it, then it may be removed from Py 3.0.
>
> I usually need to know if a string contains some non-spaces (not space
> class chars). To do it I use something like:
>
> if aline.strip(): ...
>
> If you really need str.isspace() you may use (but so far I have never
> had to do this):
>
> if txt and not txt.strip(): ...
>
> Bye,
> bearophile

A quick check of code in my homedir showed that I've used it about 60
times (that's just in my own code, not work related code.)

In favor of removing it:
 * TOOWTDI

In favor of keeping it:

 * isspace() returns a Boolean, strip() returns a (newly-allocated)
string that's then just thrown away.

 * it's more obvious, "is space?" is exactly what I'm thinking when I
reach for isspace(),  it's never occurred to me to use strip() for this
task.  Compare:
    if offset >= len(line) or line[offset].isspace():
    if offset >= len(line) or line[offset].strip():

 * it's "symetrical" with the rest of the isfoo() string methods.
IMHO, it would be odd if it wasn't there.

My $0.02


Peace,
~Simon



From awmcclain.nospam at gmail.com  Wed Sep 27 12:56:07 2006
From: awmcclain.nospam at gmail.com (awmcclain.nospam at gmail.com)
Date: 27 Sep 2006 09:56:07 -0700
Subject: What's the best way to communicate between processes?
In-Reply-To: <efdgco$so1$1@lust.ihug.co.nz>
References: <1159346472.574859.64130@i42g2000cwa.googlegroups.com>
	<efdgco$so1$1@lust.ihug.co.nz>
Message-ID: <1159376167.685369.35710@b28g2000cwb.googlegroups.com>

In general, are sockets used for intra-machine communication less
likely to fail/hang than, say, trying to connect across countries? I
would think so, right?

How do web servers handle connections to SQL databases? Do they spawn a
thread? Or is it all inline? Seems like that's the type of
behaviour/connection I'd like to model.



Lawrence D'Oliveiro wrote:
> In message <1159346472.574859.64130 at i42g2000cwa.googlegroups.com>,
> awmcclain.nospam at gmail.com wrote:
>
> > I'm thinking about coding some sort of 'local notify server' in twisted
> > (basically just listening to a socket and then passing the information
> > to the IM bot), then connecting to it via a python socket in django and
> > passing some serialized/pickled data.
>
> That sounds like the right sort of thing. I've done this sort of thing
> myself, though I've been careful not to use any language-specific
> communication formats.
>
> > I worry about two requests
> > connecting to the 'notify server' at once, though, because i *cannot*
> > hang my web server.
>
> Your Web server won't hang. The particular Web server thread/process waiting
> for the request to be serviced will be held up, and so of course will the
> particular user sitting in front of the browser waiting for a response from
> that thread/process, but nobody else will notice anything.



From fakeaddress at nowhere.org  Thu Sep 28 17:32:35 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Thu, 28 Sep 2006 21:32:35 GMT
Subject: releasing memory to malloc
In-Reply-To: <7xmz8mt5ub.fsf@ruckus.brouhaha.com>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
	<1159319835.249502.65220@i3g2000cwc.googlegroups.com>
	<1159321405.372826.60130@k70g2000cwa.googlegroups.com>
	<1159322459.473038.233090@m7g2000cwm.googlegroups.com>
	<7xmz8mt5ub.fsf@ruckus.brouhaha.com>
Message-ID: <TbXSg.22$NE6.17@newssvr11.news.prodigy.com>

Paul Rubin wrote:
>     Is there any way to get Python to release memory back to the
>     C allocator? I'm currently running a script that goes through
>     the following steps:
> 
>     1) Creates a very large number of Python objects to produce
>     a relatively small data structure that sits in a C extension.
>     The Python objects consume quite a bit of memory.
> 
>     2) Releases all the Python objects.
> 
>     3) Invokes a function of said C extension for further
>     processing. This step needs as much memory as possible.
>     ...
> 
>    I happen to have the code for the C library in question, but I
>    don't think this is the way to go in general.  If there's a way to
>    get Python to give memory back to the C allocator I can avoid
>    touching the library at all.
> 
> A cave-man approach might be to fork a new process after step 1, pass
> the small data structure to it, and have the old process exit
> (releasing all its memory back to the OS).  The new process then
> carries out the remaining steps.

I think I see what you're doing, but fork() after step 1 will
create a child process with the same memory allocated.

I think it would make more sense to do step 1 in a subprocess.
Use the subprocess module or one of the older popen()s to create
a process that builds the target object, pickles it and pipes
it back to the main process, then exits.


-- 
--Bryan


From GavinCrooks at gmail.com  Sat Sep 23 20:36:11 2006
From: GavinCrooks at gmail.com (GavinCrooks at gmail.com)
Date: 23 Sep 2006 17:36:11 -0700
Subject: Extended slices and indices
Message-ID: <1159058171.518504.180420@e3g2000cwe.googlegroups.com>


The indices method of slice doesn't seem to work quite how I would
expect when reversing a sequence.

For example :
>>> s = '01234'
>>> s[::-1]
'43210'
>>> s[slice(None,None,-1) ]
'43210'

So a slice with a negative step (and nothing else) reverses the
sequence. But what are the
corresponding indices?
>>> slice(None,None,-1).indices(len(s))
(4, -1, -1)

That looks O.K. The start is the last item in the sequence, and the
stop is one before the beginning of the sequence. But these indices
don't reverse the string:
>>> s[4:-1:-1]
''

Although they give the correct range:
>>> range( 4, -1,-1)
[4, 3, 2, 1, 0]

It would appear that there is no set of indices that will both reverse
the string and produce the correct range!

Is this a bug or a feature?

GEC

See also: http://www.python.org/doc/2.3.5/whatsnew/section-slices.html



From p.lavarre at ieee.org  Sun Sep 24 18:35:14 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 24 Sep 2006 15:35:14 -0700
Subject: ruby %w equivalent
In-Reply-To: <mailman.545.1159136157.10491.python-list@python.org>
References: <mailman.545.1159136157.10491.python-list@python.org>
Message-ID: <1159137314.180160.205010@h48g2000cwc.googlegroups.com>

> is there a python equivalent for the ruby %w operator?
> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...

The expression 'a b c'.split() creates the ['a', 'b', 'c'] list of str,
if that helps.

Also dir('a b c') briefly lists much of what
http://docs.python.org/lib/string-methods.html explains.

Also Google was curiously resistant to telling me where Ruby's %w is
documented.

Pat LaVarre



From skip at pobox.com  Fri Sep 15 07:30:20 2006
From: skip at pobox.com (skip at pobox.com)
Date: Fri, 15 Sep 2006 06:30:20 -0500
Subject: matplotlib
In-Reply-To: <1158287584.727929.148040@i3g2000cwc.googlegroups.com>
References: <1158282047.089110.284140@h48g2000cwc.googlegroups.com>
	<20060915015210.7B5F.0.NOFFLE@fiedzia.homeip.net>
	<1158287584.727929.148040@i3g2000cwc.googlegroups.com>
Message-ID: <17674.36556.220754.919994@montanaro.dyndns.org>


    diffuser> This site and webpage in particular doesn't open. I tried that
    diffuser> too before posting my question.

Well, it is SourceForge.  They are known for flakiness.  Just keep trying.
If you never fail to open the tutorial, drop me a note and I'll send you a
copy.

Skip


From onurb at xiludom.gro  Mon Sep 18 12:00:08 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 18 Sep 2006 18:00:08 +0200
Subject: Creating database structures in a portable way
In-Reply-To: <1158594419.579160.194570@m73g2000cwd.googlegroups.com>
References: <1158594419.579160.194570@m73g2000cwd.googlegroups.com>
Message-ID: <450ec289$0$1804$636a55ce@news.free.fr>

Samuel wrote:
> Hi,
> 
> I am looking for a library that takes an XML file that specifies a
> table structure, and generates the CREATE/DROP/ALTER SQL statements to
> create the tables in the database.
> 
> In particular, I am trying to port a PHP application that currently
> uses the AdoDB XML schema:
> 
>> http://phplens.com/lens/adodb/docs-datadict.htm#xmlschema
> 
> Is there a way to do something similar with the DB-API modules in
> Python?

FWIW, there's a Python port of adodb:
http://phplens.com/lens/adodb/adodb-py-docs.htm

and parsing XML in Python is quite easy. So you could as well port the
AdoDB XML to Python too.

OTOH, there are other - possibly better (YMMV) - DB abstraction layers
in Python, like SQLAlchemy. And since the above solution requires
(re)writing the xml-parsing part, it might be worth rewriting it so it
knows how to generate SQLAlchemy schemas instead.

My 2 cents...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From skip at pobox.com  Tue Sep  5 22:05:12 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 21:05:12 -0500
Subject: IronPython 1.0 released today!
In-Reply-To: <1157507696.434357.128090@m79g2000cwm.googlegroups.com>
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
	<mailman.52.1157504826.5279.python-list@python.org>
	<1157507696.434357.128090@m79g2000cwm.googlegroups.com>
Message-ID: <17662.11480.455634.761054@montanaro.dyndns.org>


    sanxiyn> Yes, it will run with Mono 1.1.17 or later out of the box with
    sanxiyn> zero problems.

For those of us who have never used IronPython or Mono, is there a quick
start document laying about somewhere?  It wasn't clear to me where to even
look.  For example, is Mono == DotGnu?

(I'm on Mac OS X in case that matters.)

Thx,

Skip


From sigzero at gmail.com  Sat Sep 30 17:25:22 2006
From: sigzero at gmail.com (Robert Hicks)
Date: 30 Sep 2006 14:25:22 -0700
Subject: The Python world tries to be polite [formerly offensive to
	another language]
In-Reply-To: <mailman.990.1159598785.10491.python-list@python.org>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<1159555450.721085.51710@h48g2000cwc.googlegroups.com>
	<mailman.990.1159598785.10491.python-list@python.org>
Message-ID: <1159651522.653353.227060@m7g2000cwm.googlegroups.com>


Steve Holden wrote:
> Istvan Albert wrote:
> [...]
> > ps. as for the title of this post, it is ironic that you are insulting
> > another community while asking for no insults
> >
> Perhaps so, but none the less comp.lang.perl has a demonstrable history
> of newbie-flaming. Don't know what it's like now, as it's years since I
> read that group, but they used to just love the smell of crisply-toasted
> newbie in the morning ;-)
>

Funny you mention that...there was a Perl talk recently and one of the
slides said "Stop being fu***ing mean to newbies!". I ask the author of
the talk and he said he didn't actually have to read the slide but it
was effective non-the-less.

Robert



From malkarouri at gmail.com  Tue Sep 26 13:04:19 2006
From: malkarouri at gmail.com (malkarouri at gmail.com)
Date: 26 Sep 2006 10:04:19 -0700
Subject: identifying new not inherited methods
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
Message-ID: <1159290259.031941.315720@e3g2000cwe.googlegroups.com>

George Sakkis wrote:
[...]
> I'd rather have it as a function, not attached to a specific class:
>

Thanks a lot George, that was what I was looking for. Got to
understand/appreciate inspect more.
Of course it works as a method. So, other than having it as a general
utility, I presume there is no special reason to have it as a function
rather than a method..


Fredrik Lundh wrote:
[...]
> if the command methods can have any arbitrary names, change the test to
> filter out the methods you're not interested in.  it's usually easier to
> make sure that all commands use a common name prefix, though.

Thanks a lot FL. I have actually gone down this road first. But I don't
want to use a common prefix, and filtering methods out feels for me a
probable bug source, as in remembering whenever I add a method to class
A I need to add it to the filter.

> and yes, if you haven't done so already, take a look at the "cmd" module
> before you build your own variant:
>
>      http://effbot.org/librarybook/cmd.htm

Thanks again. I know I am doing a cmd variant. Actually, that's exactly
where I started, with your cmd module page.
The reason I am doing this is mainly to use a cmd variant decoupled
from stdin/stdout, to hook in PyShell or IPython (not decided yet). Is
there a way to use cmd without assuming stdin/stdout?

Regards,

k



From gagsl-py at yahoo.com.ar  Wed Sep 27 23:41:27 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 00:41:27 -0300
Subject: IDLE - Customizing output format
In-Reply-To: <1159360188.483270.257080@k70g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<mailman.544.1159134982.10491.python-list@python.org>
	<1159295354.259058.52990@i42g2000cwa.googlegroups.com>
	<mailman.752.1159313702.10491.python-list@python.org>
	<1159360188.483270.257080@k70g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060928003124.0393dec0@yahoo.com.ar>

At Wednesday 27/9/2006 09:29, Ilias Lazaridis wrote:

>import sys
>def f(obj):
>     if obj:
>         print '::: ' + repr(obj)
>sys.displayhook = f

Have you tried that? You have to filter out None, not *any* False value.

> > And notice that this replaces the output of *evaluated* expressions,
> > not any print statement executed inside your code.
>
>Any simple solution for this?

Displaying things interactively is not the same as executing a print 
statement inside the code - I feel right they are not considered the 
same thing.
print output goes to sys.stdout, you could replace it.

>I've looked a little at the code, but get immediately demotivated
>seeing 72 files within a flat directroy:
>
>http://svn.python.org/view/python/trunk/Lib/idlelib/?rev=52013

Remember that packages have not existed forever... I've seen worse things :)


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From aleax at mac.com  Sat Sep  2 19:22:18 2006
From: aleax at mac.com (Alex Martelli)
Date: Sat, 2 Sep 2006 16:22:18 -0700
Subject: What do you want in a new web framework?
References: <1156100331.329889.216340@p79g2000cwp.googlegroups.com>
	<pan.2006.08.20.19.48.34.996227@gmx.net>
	<1156156636.515678.118210@75g2000cwc.googlegroups.com>
	<4jele2pe011di99c5dnq4olclglrkieggc@4ax.com>
	<1hkgnbt.ebn4o1111ftp0N%aleax@mac.com> <ecicsj$91v$1@online.de>
	<mailman.9742.1156369727.27775.python-list@python.org>
	<ed27uk$ihd$2@online.de> <1hkujsw.1kfwx315rpfd3N%aleax@mac.com>
	<edcn7g$duh$1@online.de>
Message-ID: <1hl1owk.yge2u8qc0h12N%aleax@mac.com>

Peter Maas <peter.maas at somewhere.com> wrote:
   ...
> >> I must not be a monopoly. A center of gravity would be nice, too.
> > 
> > <http://www.youtube.com/watch?v=hFGz-t5R0BE?> ....
> > 
> > [it helps to know some Italian, 
> 
> No problem: "Centro di Gravit? Permanente" = "permanent center of gravity" :)

Yep, but the lyrics around that title are worthwhile too;-).


Alex
 


From MonkeeSage at gmail.com  Fri Sep 22 18:32:59 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 22 Sep 2006 15:32:59 -0700
Subject: Python Input from keyboard
References: <1158961811.122841.163450@e3g2000cwe.googlegroups.com>
Message-ID: <1158964379.785553.97570@h48g2000cwc.googlegroups.com>

utab wrote:
> I want to read some input continuously from keyboard and then I would
> like to process these input.
>
> I have a code like this but getting errors, I would like to terminate
> when there is an empty string in the input, why is not this easy as the
> "cin" or "scanf". I had to search for even this easy operation. Is
> there a way to send EOF signal to terminate input(ctrl+??????)

You can send a signal (check the signal module in the docs), but you
can also just do what you wanted:

x = []
y = []
while True:
  msg = 'input x and y values :   '
  uin = raw_input(msg).strip()
  if not uin:
    print 'you have not entered x or y, quiting'
    break
  else:
    xt, yt = uin.split(' ', 1)
    x.append(float(xt))
    y.append(float(yt))

for i in range(len(x)):
  print x[i]

Regards,
Jordan



From fredrik at pythonware.com  Fri Sep 29 13:08:26 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 19:08:26 +0200
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <9afea2ac0609290857l867f432g5725b5e9efc6ec00@mail.gmail.com>
References: <451D25A3.7010803@googlemail.com>
	<R53637327.467.1352.3@mx-extra>	<9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>	<G53642238.475.1301.1@mx-extra>
	<9afea2ac0609290857l867f432g5725b5e9efc6ec00@mail.gmail.com>
Message-ID: <efjju9$c93$1@sea.gmane.org>

Tim Williams wrote:

> So that I know my mistake, which bit fails (the text from
> sys.exc_info()[1]?? ) , or is it all complete rubbish - and not
> do-able -  on a *nix system ?

opening a file for writing doesn't lock it on Unix.  if you want 
locking, you need other mechanisms, and I'm not sure any of them
work properly on all configurations, under all circumstances.

(there's a reason why people are still using "1970s technology"
to do locking on Unix...)

</F>



From keith at keithperkins.net  Fri Sep 29 21:38:41 2006
From: keith at keithperkins.net (Keith Perkins)
Date: Sat, 30 Sep 2006 01:38:41 GMT
Subject: another distutils question
References: <mailman.966.1159552468.10491.python-list@python.org>
	<pan.2006.09.29.23.24.21.541676@keithperkins.net>
	<mailman.985.1159574264.10491.python-list@python.org>
Message-ID: <pan.2006.09.30.01.38.39.530505@keithperkins.net>

On Fri, 29 Sep 2006 18:57:12 -0500, Robert Kern wrote:

> Keith Perkins wrote:
> 
>> On a similar note , I have another question about distutils and data files.
>> I have a little program that uses a txt file to store data, and it works
>> fine running it in it's own folder, if I install through distutils, using
>> sudo to get it to write to the site-packages folder (which root owns), it
>> installs the data file so that it is owned by root, and not by me, so
>> that the data file can't be written to (although the script can read it).
>> Do I need to run a post install script, or add something to setup.py file
>> to chown the file or am I doing something wrong?  There doesn't seem to be
>> anything on this in the docs.  
> 
> There's nothing in distutils specifically that will let you do this. The root 
> user will have to chown/chgrp/chmod/chwhatever the package that you installed 
> manually.
> 
> You shouldn't use package data for things that are going to be modified. 
> Instead, use a directory like ~/.myscript/ or something else.

I did install it in ~/.script/data.txt, and distutils set the
user/group as root.  Is it impossible to install this with distutils?
Since I'm running setup as root, should I just add a class or method to
chown the datafolder/file to the installer. Should I use autotools
instead? I haven't looked into eggs yet would that be a better choice? The
data file is something that is necessary for the program (it reads it and
prints out a random line--the whole idea of the script)if that's all I
wanted it to do I wouldn't have any problems--I could even include it as a
list in the script file, but I would like the user to be able to add other
data. 
Thanks,
Keith


From jmdeschamps at gmail.com  Fri Sep 29 16:08:01 2006
From: jmdeschamps at gmail.com (jmdeschamps at gmail.com)
Date: 29 Sep 2006 13:08:01 -0700
Subject: storing variable names in a list before they are used?
In-Reply-To: <hQeTg.57$1n3.320@news.tufts.edu>
References: <hQeTg.57$1n3.320@news.tufts.edu>
Message-ID: <1159560481.618075.154920@c28g2000cwb.googlegroups.com>


John Salerno wrote:
> If I want to have a list like this:
>
> [(first_name, 'First Name:'), (last_name, 'Last Name:').....]
>
> where the first part of each tuple is a variable name and the second
> part is a label for the user to see, such as a form like this:
>
> First Name: ________
> Last Name:  ________
>
> (the variables would store whatever information is entered in the text
> boxes to the right of each label. I'm doing it this way so I can write a
> loop to construct my GUI components).
>
> how would I go about putting these variable names in a list? I know I
> can't leave them as above, but if I put them in as a string, then how do
> I later "transform" them into an actual variable for assign, such as:
>
> first_name = widget.get_text()
>
> Is there some kind of idiom that does this sort of work?
>
> Thanks.

Not sure but mmaybe this older post might help:
http://mail.python.org/pipermail/tutor/2005-January/035232.html

JM



From bj_666 at gmx.net  Fri Sep  1 07:43:52 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 01 Sep 2006 13:43:52 +0200
Subject: Question about import and namespace
References: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>
Message-ID: <pan.2006.09.01.11.43.52.256413@gmx.net>

In <1157109701.182636.23260 at m79g2000cwm.googlegroups.com>, jdemoor wrote:

> I have an application started by a main.py file, which does a ' from
> module_1 import * '.
> main.py is responsible from the creation of an object which is then
> used in module_1.
> What is the best way to make that object visible in the module_1
> namespace ?
> I guess that if I do an ' import module_1 ', I can make the object
> visible with ' module_1.myObject = myObject ', but that won't work with
> the from ... import * statement.

Give the object as argument to functions in `module_1` is a clean solution.

Ciao,
	Marc 'BlackJack' Rintsch


From robert.kern at gmail.com  Tue Sep 12 23:46:04 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 12 Sep 2006 22:46:04 -0500
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <7xodtk315w.fsf@ruckus.brouhaha.com>
References: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>	<mailman.411.1158115415.5279.python-list@python.org>
	<7xodtk315w.fsf@ruckus.brouhaha.com>
Message-ID: <ee7utu$v55$1@sea.gmane.org>

Paul Rubin wrote:
> "Travis E. Oliphant" <oliphant.travis at ieee.org> writes:
>>> I need to simulate scenarios like the following: "You have a deck of
>>> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,
>>> replace it, and repeat N times."
>>>
>> Thinking about the problem as drawing sample froms a discrete
>> distribution defined by the population might help.
> 
> Is there some important reason you want to do this as a simulation?
> And is the real problem more complicated?  If you draw from the
> distribution 100,000 times with replacement and sum the results, per
> the Central Limit Theorem you'll get something very close to a normal
> distribution whose parameters you can determine analytically.  There
> is probably also some statistics formula to find the precise error.
> So you can replace the 100,000 draws with a single draw.

Along the lines of what you're trying to get at, the problem that the OP is 
describing is one of sampling from a multinomial distribution.

   http://en.wikipedia.org/wiki/Multinomial_distribution

numpy has a function that will do the sampling for you:


In [4]: numpy.random.multinomial?
Type:           builtin_function_or_method
Base Class:     <type 'builtin_function_or_method'>
String Form:    <built-in method multinomial of mtrand.RandomState object at 
0x3e140>
Namespace:      Interactive
Docstring:
     Multinomial distribution.

     multinomial(n, pvals, size=None) -> random values

     pvals is a sequence of probabilities that should sum to 1 (however, the
     last element is always assumed to account for the remaining probability
     as long as sum(pvals[:-1]) <= 1).


Sampling from the multinomial distribution is quite simply implemented given a 
binomial sampler. Unfortunately, the standard library's random module does not 
have one. If the number of samples is high enough, then one might be able to 
approximate the binomial distribution with a normal one, but you'd be better off 
just installing numpy.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From onurb at xiludom.gro  Thu Sep 28 04:35:12 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 10:35:12 +0200
Subject: windev vs python SOS
In-Reply-To: <nXzSg.195$nn3.31@nntpserver.swip.net>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <451b8941$0$15203$626a54ce@news.free.fr>

st?phane bard wrote:
> hello, my boss ask me to prefer windev to python.

Find another job.

(I'm serious. I've 2+ years of pain with Windev, and if your boss is
clueless enough to believe all the marketing crap from PCSoft's droids,
you really don't want to work for him).

> I have to argue
> 
>  - python work on multiple platform (linux, mac, windows)
>     A good point but it didn't interest him. Because
>     we want to choose a language for prototyping.

Python is far better at this than Windev - and the "prototype" is
usually quite usable.

>     So multi platform is not enough.
> 
>  - python and windev are fast to develop

Nope. Windev lets you quickly have a barely usable DB-GUI pipeline, and
then trouble begins. Python, OTHO, really lets you do the job.

>  - windev as a good IDE, python? boa-constructor is ok with wxpython

Aren't you confusing IDE with RAD ?

> 
>  - python is open source (that's not an argument for my boss, sorry
> it's     a boss ...)

Python is free. And being a boss doesn't necessarily imply being stupid.

> any idea for a strong argument ?

My own argument would be "it's Python or it's without me" <g>

More seriously: since you're in a Window-only shop, portability may not
be a strong argument. But Python is also very good at Windows-specific
stuff (COM etc) - and is widely used by Windows programmers (at least in
France). FWIW, you may want to post this on fclpy too - there are some
"hard-core" Windows developpers there...


You can also point your boss to IronPython - if MS puts some money on
it, it can't be a bad tool, isn't it ?-)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From userprogoogle-139 at yahoo.co.uk  Thu Sep 21 07:06:16 2006
From: userprogoogle-139 at yahoo.co.uk (rodmc)
Date: 21 Sep 2006 04:06:16 -0700
Subject: Python and CORBA
In-Reply-To: <op.tf727isjrqur0o@eb.pragmadev>
References: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
	<op.tf727isjrqur0o@eb.pragmadev>
Message-ID: <1158836775.901518.85790@d34g2000cwd.googlegroups.com>

Thanks to everyone for their help. I had tried OmniORB and while the
base library worked ok, the Python bit OmniORBpy seems to dislike
working... Perhaps there is something wrong with my settings.

I will also try the Python only suggestion.

cheers,

rod



From anthra.norell at vtxmail.ch  Wed Sep 20 06:48:01 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Wed, 20 Sep 2006 12:48:01 +0200
Subject: newbe's re question
In-Reply-To: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
Message-ID: <45111C61.8010400@vtxmail.ch>

Eric_Dexter at msn.com wrote:
> All I am after realy is to change this
>
>  reline = re.line.split('instr', '/d$')
>
> into something that grabs any line with instr in it take all the
> numbers and then grab any comment that may or may not be at the end of
> the line starting with ; until the end of the line including white
> spaces..  this is a corrected version from
>
> http://python-forum.org/py/viewtopic.php?t=1703
>
> thanks in advance the hole routine is down below..
>
>
>
>
>
>
> [code]
> def extractCsdInstrument (input_File_Name, output_File_Name,
> instr_number):
>
>     "takes an .csd input file and grabs instr_number instrument and
> creates output_File_Name"
>     f = open (input_File_Name , 'r')                #opens file passed
> in to read
>     f2 = open (output_File_Name, 'w')               #opens file passed
> in to write
>     instr_yes = 'false'                             #set flag to false
>
>     for line in f:                                  #for through all
> the lines
>       if "instr" in line:                           #look for instr in
> the file
>            if instr_yes == 'true':                    #check to see if
> this ends the instr block
>                break                                #exit the block
>
>            reline = re.line.split('instr', '/d$')     #error probily
> split instr and /d (decimal number into parts) $ for end of line
>            number = int(reline[1])                  #convert to a
> number maybe not important
>                 if number == instr_number:            #check to see if
> it is the instr passed to function
>                 instr_yes = "true":                 #change flag to
> true because this is the instr we want
>       if instr_yes = "true":                        #start of code to
> copy to another file
>            f2.write(f.line)                         #write line to
> output file
>
>     f.close                                         #close input file
>     f2.close          
>
> [/code]
>
>   
Eric,
      From your problem description and your code it is unclear what 
exactly it is you want. The task appears to be rather simple, though, 
and if you don't get much useful help I'd say it is because you don't 
explain it very well.
      I believe we've been through this before and your input data is 
like this

   data = '''
   <CsoundSynthesizer>;
     ; test.csd - a Csound structured data file
 
   <CsOptions>
     -W -d -o tone.wav
   </CsOptions>
 
   <CsVersion>    ;optional section
     Before 4.10  ;these two statements check for
     After 4.08   ;   Csound version 4.09
   </CsVersion>
 
   <CsInstruments>
     ; originally tone.orc
     sr = 44100
     kr = 4410
     ksmps = 10
     nchnls = 1
     instr   1
         a1 oscil p4, p5, 1 ; simple oscillator
            out a1
       endin
   </CsInstruments>

   <CsScore>
     ; originally tone.sco
     f1 0 8192 10 1
     i1 0 1 20000 1000 ;play one second of one kHz tone
     e
   </CsScore>

   </CsoundSynthesizer>

Question 1: Is this your input?
if yes:
    Question 1.1: What do you want to extract from it? In what format?
if no:
    Question 1.1: What is your input?
    Question 1.2: What do you want to extract from it? In what format?
Question 2: Do you need to generate output file names from the data? 
(One file per instrument?)
if yes:
   Question 2.1: What do you want to make your file name from? 
(Instrument number?)


Regards

Frederic



From half.italian at gmail.com  Mon Sep 18 22:38:48 2006
From: half.italian at gmail.com (half.italian at gmail.com)
Date: 18 Sep 2006 19:38:48 -0700
Subject: Recursing for Progress Bar
Message-ID: <1158633528.072727.212760@h48g2000cwc.googlegroups.com>

I'm making a small interface for copying large groups of files around a
filesystem.  I have a progressbar that counts the items in the
destination, and increments as each new file is copied over.  It
compares this number to the number of files in the source and updates
accordingly.

All is fine and dandy with an average amount of files (<20000), but
when the amount of files to be copied becomes large, I end up getting
"Maximum recurssion depth exceeded" errors.  I found out I could find
an safe recursion limit per system, and then set the recursion limit
using sys.setrecursionlimit(), but its still not giving me the depth I
would like.  I can also make it work by slowing the update speed way
down, but it just looks clumsy and even then, the top limit could be 10
times the amount of data I'm testing with now...maybe even 200GB.  I
don't really know how slow I would need it to update to make sure to
stay below the limit.

Is there a way to get around recursion limits?  Help!

~half.italian

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

      def incrementProgress(self, window, workorder):
		dest_count = workorder.copyIndex
		self.label.config(text=workorder.movingFile)
		src_count = len(workorder.contents)

		if self.p >= 100:
			window.destroy()
			#
			# RESET self.p so future moves work!!
			self.p = 0
			return

		# check for an empty workorder folder...it's already been moved
		#
		if workorder.contents == []:
			window.destroy()
			self.p = 0
			return


		self.p = (float(dest_count)/float(src_count))*100
		print "Percentage copied:", self.p

		self.progressBar.updateProgress(self.p)
	
		time.sleep(.1)
		self.incrementProgress(window, workorder)



From jmike at alum.mit.edu  Fri Sep 22 11:34:00 2006
From: jmike at alum.mit.edu (jmike at alum.mit.edu)
Date: 22 Sep 2006 08:34:00 -0700
Subject: XML parser that sorts elements?
Message-ID: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>

Hi everyone,

I am a total newbie to XML parsing.  I've written a couple of toy
examples under the instruction of tutorials available on the web.

The problem I want to solve is this.  I have an XML snippet (in a
string) that looks like this:

<booga foo="1" bar="2">
  <well>hello</well>
  <blah>goodbye</blah>
</booga>

and I want to alphabetize not only the attributes of an element, but I
also want to alphabetize the elements in the same scope:

<booga bar="2" foo="1">
  <blah>goodbye</blah>
  <well>hello</well>
</booga>

I've found a "Canonizer" class, that subclasses saxlib.HandlerBase, and
played around with it and vaguely understand what it's doing.  But what
I get out of it is

<booga bar="2" foo="1">
  <well>hello</well>
  <blah>goodbye</blah>
</booga>

in other words it sorts the attributes of each element, but doesn't
touch the order of the elements.

How can I sort the elements?  I think I want to subclass the parser, to
present the elements to the content handler in different order, but I
couldn't immediately find any examples of the parser being subclassed.

Thanks for any pointers!
  --JMike



From torerik81 at gmail.com  Sun Sep  3 04:41:41 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Sun, 03 Sep 2006 10:41:41 +0200
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <slrnefk26s.5pt.sybrenUSE@schuimige.stuvel.eu>
References: <edcrms$auj$1@news.uit.no>
	<slrnefk26s.5pt.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ede4g7$tbv$1@news.uit.no>

Sybren Stuvel wrote:
> Tor Erik enlightened us with:
>> The reason is that my application does about 16 connects and data
>> transfers per second, to the same 16 remote hosts. After approx 200
>> secs there are 4000 sockets waiting to be garbage collected by the
>> OS.
> 
> Which OS are we talking about?

Windows XP

> 
>> At this point is seems that connect loops and starts using the same
>> local addresses it used 4000 connections ago, resulting in an
>> "Address already in use" exception.
> 
> After how many seconds does this happen?

200 seconds approx

> 
>> My question is if there are any other methods of solving this? Maybe
>> a socket option of some sort...
> 
> If I'm correct (please correct me if I'm not), on Linux you can use
> 'sysctl -w net.ipv4.tcp_fin_timeout=X' to set the time between closing
> the socket and releasing it to be reused. You can also check the
> SO_REUSEADDR argument to the setsockopt function. Read 'man 7 socket'
> for more info.

I've read about SO_REUSEADDR. As far as I understand, this is what 
SO_REUSEADDR is for:

1. Allow a listening socket to bind itself to its well-known port even 
if previously established connections use it as their local port. 
Setting this option should be done between calls to socket and bind, and 
hence is only usable for listening sockets, not client sockets like mine.

2. Allow multiple servers on the same host with different ip-adresses to 
listen to the same port.

I've tried setting this option, but could not see any notable changes...

> 
> Sybren


From george.sakkis at gmail.com  Sun Sep  3 14:08:28 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 3 Sep 2006 11:08:28 -0700
Subject: str.isspace()
References: <1157300448.956962.24510@i42g2000cwa.googlegroups.com>
	<mailman.10316.1157305462.27775.python-list@python.org>
Message-ID: <1157306908.307787.203900@m79g2000cwm.googlegroups.com>

Jean-Paul Calderone wrote:

> On 3 Sep 2006 09:20:49 -0700, bearophilehugs at lycos.com wrote:
> >Are you using the str.isspace() method? I don't use it, so if most
> >people don't uses it, then it may be removed from Py 3.0.
> >
> >I usually need to know if a string contains some non-spaces (not space
> >class chars). To do it I use something like:
> >
> >if aline.strip(): ...
> >
> >If you really need str.isspace() you may use (but so far I have never
> >had to do this):
> >
> >if txt and not txt.strip(): ...
> >
> >Bye,
> >bearophile
> >
>
> Great idea.
>
> By the way, are you using division?  I don't use it, so if most people
> don't use it, then it may be removed from Py 3.0.
>
> If you really need division, you may use:
> 
>   x * (y ** -1)
> 
> Bye,
> Jean-Paul

LOL... well said.



From sjmachin at lexicon.net  Tue Sep 12 09:15:14 2006
From: sjmachin at lexicon.net (John Machin)
Date: 12 Sep 2006 06:15:14 -0700
Subject: error
In-Reply-To: <mailman.345.1158064847.5279.python-list@python.org>
References: <mailman.345.1158064847.5279.python-list@python.org>
Message-ID: <1158066914.728807.82630@d34g2000cwd.googlegroups.com>


prashant.burghate at wipro.com wrote:
> Hi,
>
> Today is my first day of working on python. I want to execute python
> script through C++ program. I found one very good article with example
> at http://docs.python.org/ext/pure-embedding.html.
> I followed the procedure as given, the code is compiled but while
> running it is giving error like:
> ImportError: No module named multiply
> Failed to load "multiply"
>
> Here are the steps I followed, please suggest where I am wrong and how
> can I remove the above error.
>
> Step 1: Copied the given C program into a file called test.cpp (using vi
> editor)
> Step 2: Compiled it using : g++ test.cpp  /usr/lib/libpython2.4.so
> (created a.out)
> Step 3: Wrote the given script of multipication in a file named as
> multiply (using vi editor)

Try naming your source file multiply.py but continue to use the module
name (multiply) in the command line.  [Note: you could have a binary
extension module called multiply in a binary file called multiply.so]

I guess the author of that manual section didn't contemplate somebody
on their first day with Python doing some embedding :-)

HTH,
John



From adelagon at gmail.com  Wed Sep 27 01:47:30 2006
From: adelagon at gmail.com (Alvin Delagon)
Date: Wed, 27 Sep 2006 13:47:30 +0800
Subject: MySQLdb and mod_python issue
Message-ID: <7a01f6c00609262247w1b12f705j259357d4d6aaafa2@mail.gmail.com>

I have a mod_python script that is always crash while connecting to mysql
server. Here's a dump of the apache error log:

[Wed Sep 27 13:27:42 2006] [notice] mod_python: (Re)importing module 'test'
with path set to '['/var/www/html/XBox2']'
[Wed Sep 27 13:27:42 2006] [notice] child pid 27793 exit signal Segmentation
fault (11)

MySQLdb works well on the command line version of my application. Anyone
know how to fix this? It dies on the line where MySQLdb.connect() is called.
Thanks in advance.
-------------- next part --------------
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From p.lavarre at ieee.org  Mon Sep 25 13:44:32 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 25 Sep 2006 10:44:32 -0700
Subject: Reverse a String?
References: <mailman.505.1159045338.10491.python-list@python.org>
	<1159135991.941286.203480@i42g2000cwa.googlegroups.com>
	<mailman.558.1159187470.10491.python-list@python.org>
Message-ID: <1159206272.369879.240940@k70g2000cwa.googlegroups.com>

> http://pyfaq.infogami.com/suggest
> is the "right" place to submit new entries.

Thanks for sharing the secret.  Now there I have added: "Q: How can I
reverse a string, an array, a list, etc."

And to share our secret with future newbies, to
http://pyfaq.infogami.com/ I've added the suggestion:

///

How about here we add a bold:

If you have a suggested FAQ, click thru the Suggest New Articles link
and add a comment there. Don't choose the relevant category and then
discover you lack the privilege to comment there. Don't give up because
you have no ID: just invent one and register your e-mail and proceed.

///

> I would have hoped that the suggestion links on the first page would have sent you

I actually did visit the right place - it appears listed as only the
fourth "resource" behind the label "Suggest New Articles".  But the
only suggestions that were FAQs were from the effbot and submitted with
a font I didn't know how to create.  Also I had no sure idea of what
"resource", "category", and "article" meant in this context, so I could
barely decipher that only-apparently-English page.

Instead, because the site looks like a Wiki, I was trying to add my
suggested FAQ in place in the relevant category.  The place I picked
that choked irrecoverably was the "Programming FAQ" category, just
ahead of the "How do I modify a string in place?" question, in between
the "How do I convert a string to a number?" and "How do I convert a
number to a string?" questions.

Pat LaVarre



From tony.bedford at gmail.com  Tue Sep 26 05:54:41 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 02:54:41 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
Message-ID: <1159264481.693180.67850@e3g2000cwe.googlegroups.com>

Haha!

OK thanks guys.

I was just trying to check if objects were the same (object), didn't
know Integers were a special case.

Thanks,
Tony



From ilias at lazaridis.com  Sat Sep 23 10:56:06 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Sat, 23 Sep 2006 17:56:06 +0300
Subject: IDLE - Customizing output format
Message-ID: <ef3hu5$a20$1@mouse.otenet.gr>

IDLE has an output format like this:

 >>> object
<type 'object'>
 >>> type
<type 'type'>
 >>> object.__class__
<type 'type'>
 >>> object.__bases__

How can I customize it to become like that:

 >>> object
     <type 'object'>
 >>> type
     <type 'type'>
 >>> object.__class__
     <type 'type'>
 >>> object.__bases__

or that:

 >>> object
   : <type 'object'>
 >>> type
   : <type 'type'>
 >>> object.__class__
   : <type 'type'>
 >>> object.__bases__

(preferably without modifying code)

.

-- 
http://lazaridis.com


From IronSwallow at gmail.com  Fri Sep 15 20:20:42 2006
From: IronSwallow at gmail.com (Patrick Thomson)
Date: 15 Sep 2006 17:20:42 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <1158366042.880482.12840@i42g2000cwa.googlegroups.com>

Personally, I use the non-free but absolutely phenomenal TextMate
(http://macromates.com/), but I've enjoyed my work with jEdit
(http://www.jedit.org/) and, of course, (X)Emacs.



From eric at brouhaha.com  Wed Sep 20 17:15:49 2006
From: eric at brouhaha.com (Eric Smith)
Date: 20 Sep 2006 14:15:49 -0700
Subject: Python/MySQL problem on Windows
References: <qhk63yb7fs.fsf@ruckus.brouhaha.com>
	<mailman.350.1158785240.10491.python-list@python.org>
Message-ID: <qhfyemb5oa.fsf@ruckus.brouhaha.com>

Carsten Haese <carsten at uniqsys.com> writes:
> What happens if you use connect(...) instead of connection(...)?

Then it works!  :-)

I could have sworn that I got the use of connection() from published
sample code, but I must be mistaken.

Thanks!!!!!
Eric


From mcPas.De.Spam at mclaveauPas.De.Spam.com  Sat Sep 23 00:01:26 2006
From: mcPas.De.Spam at mclaveauPas.De.Spam.com (Michel Claveau)
Date: Sat, 23 Sep 2006 06:01:26 +0200
Subject: Automatic import PEP
References: <mailman.491.1158981359.10491.python-list@python.org>
Message-ID: <mn.b9697d699d6165bb.34209@mclaveauPas.De.Spam.com>

Hi!

>>> I have also found "autoimp" useful in writing normal Python...

+1

-- 
@-salutations

Michel Claveau




From duncan.booth at invalid.invalid  Wed Sep 27 12:47:20 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 16:47:20 GMT
Subject: Surprise using the 'is' operator
References: <mailman.746.1159307893.10491.python-list@python.org>
	<451A9824.6040106@tobiah.org> <efe7v1$8ls$1@news.albasani.net>
Message-ID: <Xns984BB4F84EE31duncanbooth@127.0.0.1>

Georg Brandl <g.brandl-nospam at gmx.net> wrote:

>> Suppose I fill an list with 100 million random integers in the range
>> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>> of '12345' pointed to the same integer object?  Why should more be
>> made, when they all do the same thing, and are not subject to change?
> 
> Because for typical usage of integers (which doesn't include your
> example), it is more expensive to check if there's already an integer
> with that specific value out there than to create a new one.

Ok, so here's a follow-on question: why doesn't intern() accept integer 
arguments?

If it did then you could do the memory optimisation anywhere it seemed 
worthwhile (and all constant integers could be interned when code is first 
loaded at effectively no expense).


From wuwei23 at gmail.com  Wed Sep 13 23:00:55 2006
From: wuwei23 at gmail.com (alex23)
Date: 13 Sep 2006 20:00:55 -0700
Subject: auto upgrade scripts?
In-Reply-To: <1158045742.490620.29520@h48g2000cwc.googlegroups.com>
References: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>
	<4505EB1E.5070007@websafe.com>
	<1158045742.490620.29520@h48g2000cwc.googlegroups.com>
Message-ID: <1158202855.637019.66460@e63g2000cwd.googlegroups.com>

stefaan.himpe at gmail.com wrote:
> In my case I want my program to check for (e.g.) bug-fix releases on
> some location (network drive or ftp), and if available, allow to
> automatically download and install them.

Have you looked into PEAK's setuptools?

http://peak.telecommunity.com/DevCenter/setuptools
http://peak.telecommunity.com/DevCenter/EasyInstall
http://peak.telecommunity.com/DevCenter/PythonEggs

That might be a reasonable place to start.

-alex23



From jantod at gmail.com  Fri Sep 15 10:25:33 2006
From: jantod at gmail.com (Janto Dreijer)
Date: 15 Sep 2006 07:25:33 -0700
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<450a6ba9$0$31654$626a54ce@news.free.fr>
Message-ID: <1158330333.091031.109700@m73g2000cwd.googlegroups.com>

Awesome! I haven't tested it on the actual server but I think it works.
Thanks!
I prefer a TCP connection solution and will post one if it works.

server.py
========
from socket import *
print "listening"
UDPSock = socket(AF_INET, SOCK_DGRAM)
UDPSock.bind(("localhost", 1234)) # visibility to outside world
payload, addr = UDPSock.recvfrom(1024)
print "message from %s: %s" % (`addr`, payload)
UDPSock = socket(AF_INET, SOCK_DGRAM) # open UDP socket
result = UDPSock.sendto("your public address is %s" % `addr`, addr)

client.py
=====
from socket import *
UDPSock = socket(AF_INET, SOCK_DGRAM) # open UDP socket
result = UDPSock.sendto("what's my public address?", ("localhost",
1234))
payload, addr = UDPSock.recvfrom(1024)
print payload

results:
====
listening
message from ('127.0.0.1', 32787): what's my public address?

your public address is ('127.0.0.1', 32787)



From aleax at mac.com  Sun Sep  3 15:28:32 2006
From: aleax at mac.com (Alex Martelli)
Date: Sun, 3 Sep 2006 12:28:32 -0700
Subject: Broadcast server
References: <1157015655.323891.154720@p79g2000cwp.googlegroups.com>
	<44f77d3c$0$75041$14726298@news.sunsite.dk>
	<1157102040.703559.322090@p79g2000cwp.googlegroups.com>
Message-ID: <1hl391s.x8y3epjnp978N%aleax@mac.com>

<swell at netcourrier.com> wrote:

> Yes but before going deeper ( too deep ) i would like to play with a
> toy python example. Basically what i want to study first is a socket or
> socket+select server and 5 clients that get time updated from the
> server.
> 
> Don't really know how to keep hot connections without blocking the
> server ? If someone can show me a quick and dirty example of the
> client/server i'll apprciate it a lot.

Download the zipfile with the examples from Python in a Nutshell (freely
available at
<http://examples.oreilly.com/pythonian/pythonian-examples.zip>) and look
at the examples for chapter 19 -- several sample servers and clients for
a trivial "echo" protocol that progress from a server that's only able
to deal with one client at a time, to multithreaded ones, to ones
implemented with the better scalability of asynchronous socket handling,
via select, asyncore, asynchat, and Twisted (there are also UDP clients
and servers for an otherwise perfectly analogous task).

I strongly recommend asynchronous socket handling, by far the best
scalable and best performing approach to network programming.  Doing it
all by yourself with the select module is quite the learning experience,
although in real-life I'd always recommend Twisted instead (it's an
extremely rich framework, normally used at vastly higher semantics
level, but in the mentioned examples I show instead how to use it at
nearly the same semantics level as asyncore &c).


Alex


From stevenq1967 at gmail.com  Thu Sep  7 20:46:19 2006
From: stevenq1967 at gmail.com (stevenq1967 at gmail.com)
Date: 7 Sep 2006 17:46:19 -0700
Subject: wxPython
In-Reply-To: <1157672307.674860.236190@e3g2000cwe.googlegroups.com>
References: <1157659732.697958.290990@m73g2000cwd.googlegroups.com>
	<1157672307.674860.236190@e3g2000cwe.googlegroups.com>
Message-ID: <1157676379.534169.296520@e3g2000cwe.googlegroups.com>

I'm on Fedora  Core 4, that's Linux. Thanks anyways.
Eric_Dexter at msn.com wrote:
> I suspect that your version for 2.4 is later than the one I installed a
> couple weeks ago.  That one was 2.6.1.0  You could possibly have the
> one for python 2.5.  I had trouble downloading that and pywin for the
> p.c.  If you don't care about pywin you can consider python 2.5.  Even
> if it is evident that the version still exsists it may still be in the
> search engines..  I don't know if you are after windows or not since I
> am not sure what fc4 is but if you are I have the uploads on my site.
>
> http://www.stormpages.com/edexter/csound.html
>
>
> stevenq1967 at gmail.com wrote:
> > Hello everyone,
> > I'm new at this so please be gentle. I have Python 2.4 on fc4. I
> > installed easy_install and Python  in my home directory  since I don't
> > have root permissions. It works fine. Now I want to install wxPython. I
> > downloaded wxPython-src2.6.3.3.tar.bz2 from the site and now I'm trying
> > this from the commnad line:
> > easy_install --install-dir
> > /usr/people/stevenq/lib/python2.4/site-packages/ --dry-run
> > ~/Desktop/wxPython-src-2.6.3.3.tar
> > and I get this:
> > error: Couldn't find a setup script in
> > /usr/people/stevenq/Desktop/wxPython-src-2.6.3.3.tar
> > Anybody  has any ideas?
> > Best regards,
> > Steven



From yakumo9275 at gmail.com  Wed Sep 13 13:14:17 2006
From: yakumo9275 at gmail.com (stu)
Date: 13 Sep 2006 10:14:17 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <1158167657.792186.221490@e3g2000cwe.googlegroups.com>

jedit

http://www.jedit.org/

much better than textpad by a longshot.

but whatever you choose... 

-stu



From jstroud at mbi.ucla.edu  Thu Sep 21 00:26:07 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 04:26:07 GMT
Subject: naming objects from string
In-Reply-To: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
Message-ID: <zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>

manstey wrote:
> Hi,
> 
> If I have a string, how can I give that string name to a python object,
> such as a tuple.
> 
> e.g.
> 
> a = 'hello'
> b=(1234)
> 
> and then a function
> name(b) = a
> 
> which would mean:
> hello=(1234)
> 
> is this possible?
> 

Depends on your namespace, but for the local namespace, you can use this:

py> a = object()
py> a
<object object at 0x40077478>
py> locals()['bob'] = a
py> bob
<object object at 0x40077478>

A similar approach can be used for the global namespace.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From luismgz at gmail.com  Mon Sep  4 19:35:30 2006
From: luismgz at gmail.com (=?iso-8859-1?q?Luis_M._Gonz=E1lez?=)
Date: 4 Sep 2006 16:35:30 -0700
Subject: python web framework for straight sql (no ORM)?
In-Reply-To: <1157409584.753926.5150@p79g2000cwp.googlegroups.com>
References: <1157409584.753926.5150@p79g2000cwp.googlegroups.com>
Message-ID: <1157412930.169690.4990@m73g2000cwd.googlegroups.com>


falcon wrote:
> Can someone please recommend a python web app framework which doesn't
> abstract away sql in favor of python objects?
>
> As far as I can tell, frameworks such as django, turbo gears, etc.
> allow one to drop down the the sql layer, however that is not the most
> effecient use of the framework.  I would like to use sql (similar to
> how JSP's JSTL provides tag libraries for sql), yet not have to build
> my own components such as: site administration, user registration,
> authentication, rss feeds, etc. (I guess I'm thinking of a Django with
> straight db-api database interface).
>
> Is there such a framework?
>
> Thanks.

Nothing prevents you from using staright sql with Django or other
frameworks.
Quoted from Django's home page:

"Define your data models entirely in Python. You get a rich, dynamic
database-access API for free - but you can still write SQL if
needed."

Luis



From webraviteja at gmail.com  Sun Sep 24 22:28:44 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 24 Sep 2006 19:28:44 -0700
Subject: newbie IronPython compiled scripts speed question
In-Reply-To: <op.tgenfu013p2nzo@fafoi.lan>
References: <op.tgees50h3p2nzo@fafoi.lan>
	<1159133144.923369.209640@b28g2000cwb.googlegroups.com>
	<op.tgenfu013p2nzo@fafoi.lan>
Message-ID: <1159151324.604597.301780@d34g2000cwd.googlegroups.com>

In most cases, carefully examine why you need native code at all. Since
a good number of performance sensitive CPython modules are in fact
written in C to begin with, the improvements may not always be
significant.

I don't know about your application but here are some general
observations. Beginers are often enamored with native code. This is
normal. Unless your application is explicitly low level, native code is
not worth bothering with.

> thanks, I'll check out psyco's documentation, since unfortunately the
> scripts will be run on a Windows box, and using a compiler other than
> VC++ is not an option...

1.) mingw works quite well for writing Python extensions.
2.) ctypes is a great way to incorporate native code. Create a dll in
whatever native language you please and call it from Python.
3.) Since you are on just MS Windows, you can use COM to wrap your
native code.



From ajones1 at gmail.com  Mon Sep 25 18:58:40 2006
From: ajones1 at gmail.com (Adam Jones)
Date: 25 Sep 2006 15:58:40 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159222443.540807.232040@k70g2000cwa.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<1159222443.540807.232040@k70g2000cwa.googlegroups.com>
Message-ID: <1159225120.550605.220930@d34g2000cwd.googlegroups.com>


altemurbugra at gmail.com wrote:
> I dont mean only google, also other sites aswell

Google expressly forbids doing any form of automated search outside of
their api. If you want to write a script that will run Google searches,
you have to use the api to do so. As far as I know most of the other
search sites have the same requirement.

Yes, it is possible to query a bunch of search sites and dump the
results into an xml file. It is not even all that hard. In fact, I bet
running a search on the relevant terms will probably produce something
that almost does what you want.

-Adam



From rridge at csclub.uwaterloo.ca  Wed Sep 27 18:15:09 2006
From: rridge at csclub.uwaterloo.ca (Ross Ridge)
Date: 27 Sep 2006 15:15:09 -0700
Subject: XSLT speed comparisons
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
Message-ID: <1159395309.166081.23130@m7g2000cwm.googlegroups.com>

Damian wrote:
> two websites, one in ASP.NET v2 and one in Python 2.5 (using 4suite for
> XML/XSLT)
> both on the same box (Windows Server 2003)
> both using the same XML, XSLT, CSS
>
> The problem is, the Python version is (at a guess) about three times
> slower than the ASP one.

It could just be that 4suite is slower than MSXML.  If so, you can use
MSXML in Python if you want.  You'll need to install the Python for
Windows extensions.  Something like this:

	from os import environ
	import win32com.client

	def buildPage():
		xsluri = 'xsl/plainpage.xsl'
		xmluri = 'website.xml'

		xsl = win32com.client.Dispatch("Msxml2.FreeThreadedDOMDocument.4.0")
		xml = win32com.client.Dispatch("Msxml2.DOMDocument.4.0")
		xsl.load(xsluri)
		xml.load(xmluri)

		xslt = win32com.client.Dispatch("Msxml2.XSLTemplate.4.0")
		xslt.stylesheet = xsl
		proc = xslt.createProcessor()
		proc.input = xml

		params = {"url":environ['QUERY_STRING'].split("=")[1]}
		for i, v in enumerate(environ['QUERY_STRING'].split("/")[1:]):
		    params["selected_section%s" % (i + 1)] = "/" + v

		for param, value in params.items():
			proc.addParameter(param, value)
		proc.transform()
		return proc.output

	print "Content-Type: text/html\n\n"
	print buildPage()


                                             Ross Ridge



From rhymes at myself.com  Sun Sep 24 11:57:36 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Sun, 24 Sep 2006 17:57:36 +0200
Subject: ctypes question about call by reference
References: <mailman.535.1159113152.10491.python-list@python.org>
Message-ID: <1hm6khm.1wdxlsif8cyfN%rhymes@myself.com>

Oliver Andrich <oliver.andrich at gmail.com> wrote:
> - ExceptionType is an enum
> - MagickWand is somewhat strange, but so far it works fine without any
> type mangling.
> 
> How would I wrap this thing using ctypes? Can anybody help me with that?

First thing first: you have to identify how ExceptionType and MagickWand
are composed of. Then you can start wrapping them following the
instructions in the tutorial:
http://docs.python.org/lib/ctypes-ctypes-tutorial.html

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From alefnula at gmail.com  Mon Sep 18 05:44:10 2006
From: alefnula at gmail.com (alefnula at gmail.com)
Date: 18 Sep 2006 02:44:10 -0700
Subject: Cheese Shop Registration error
In-Reply-To: <450dee26$0$22358$afc38c87@news.optusnet.com.au>
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
Message-ID: <1158572650.269903.309690@i42g2000cwa.googlegroups.com>

The Key ID that the kgpg shows. I tried to paste the key returned by
the quiery on the keyserver. but it also doesn't work. I tried
everything that has any connection with the key, but everything fails.

By the way the key is: 6A61E3AD

Richard Jones wrote:
> alefnula at gmail.com wrote:
> > I tried to register on the Python Cheese Shop, but I constatnly get a
> > "GPG key ID is invalid" error.
> >
> > I made a new GPG key using kgpg, exported the public key to the key
> > server, and copy/pasted the Key ID into the registration form... But it
> > doesn't work.
> 
> And the key ID you were trying to paste in was?
> 
> 
>     Richard



From chris.cavalaria at free.fr  Fri Sep 15 05:00:51 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Fri, 15 Sep 2006 11:00:51 +0200
Subject: UDP packets to PC behind NAT
In-Reply-To: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
Message-ID: <450a6ba9$0$31654$626a54ce@news.free.fr>

Janto Dreijer a ?crit :
> This is probably more of a networking question than a Python one, but
> it would be nice to know if someone has done this with Python's socket
> module. And besides one usually gets more information from c.l.py than
> anywhere else :)
> 
> I have a server with a static "public" IP and a client behind a NAT. I
> would like to send UDP packets from the server to the client. So what I
> need to do is open up a "hole" in the NAT and let the server know the
> target IP and port of the client where it can send its packets.
> 
> Now I have read somewhere that you can have TCP and UDP running on the
> same port. Not sure if this is true. Would it be a reasonable solution
> to initiate a TCP connection from the client to the server and somehow
> (?) let the server figure out how the client is connecting? And then
> send UDP to client over the same (IP, port)?

Initiate an UDP connection from the client to the server and have the 
server send back the UDP packets to the address you get in the 
"recvfrom" result.


From luismgz at gmail.com  Sun Sep 24 23:49:29 2006
From: luismgz at gmail.com (=?iso-8859-1?q?Luis_M._Gonz=E1lez?=)
Date: 24 Sep 2006 20:49:29 -0700
Subject: SQL reports like in MS Access
References: <1159131558.050709.13180@h48g2000cwc.googlegroups.com>
Message-ID: <1159156169.610258.175230@b28g2000cwb.googlegroups.com>

This isn't probably the answer you are looking for, but a good solution
that worked for me is  Cheetah. Cheetah is a template engine, which is
mainly used for web applications, but that can be used for generating
all kinds of text documents.

For example, I use it for creating invoices in html format, that can be
easily opened in MS Word. Cheetah is very easy to use and I highly
recommend it.

Luis


jakubadamek at seznam.cz wrote:
> Hi, what is the best unit for creating reports like in Microsoft
> Access, i.e. with page header / footer, grouping, group headers /
> footers etc., with Wysiwyg editor?
> 
> Thanks a lot, Jakub



From cliff at develix.com  Tue Sep 12 22:14:39 2006
From: cliff at develix.com (Cliff Wells)
Date: Tue, 12 Sep 2006 19:14:39 -0700
Subject: Are Python's reserved words reserved in places they dont need
	to be?
In-Reply-To: <1158109531.828274.53810@i42g2000cwa.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
	<1158104598.658388.241640@d34g2000cwd.googlegroups.com>
	<1158109531.828274.53810@i42g2000cwa.googlegroups.com>
Message-ID: <1158113679.3622.9.camel@devilbox>

On Tue, 2006-09-12 at 18:05 -0700, Robert Hicks wrote:
> metaperl wrote:
> > Istvan Albert wrote:
> > > metaperl wrote:
> > > > -->  python -i
> > > > >>> class = "algebra"
> > > >   File "<stdin>", line 1
> > > >     class = "algebra"
> > > >           ^
> > > > SyntaxError: invalid syntax
> > >
> > > Designing a syntax to avoid all possible newbie errors is impractical
> > > because as soon as you are finished with one iteration the new newbies
> > > will start making different kinds of errors...
> >
> > You are missing the point: the point is that the above could be
> > considered correct if the rules of Python were that an assignment
> > statement takes
> > IDENTIFIER '=' LVALUE
> >
> > Also  "class" IDENTIFIER COLON could also be considered correct.
> >
> 
> Yes it could but it isn't and isn't likely to be. Simply do not use
> reserved words. That rule is hardly limited to Python.

I'm surprised so many people misunderstand his complaint.  It isn't as
simple as "don't do it".  The OP is referring to autogenerated code and
attributes.  This means you must tell the source of the generated items
(perhaps a database table) that it can't have a column named "class" or
"pass" or add hacks in to work around it (an easy one would be to prefix
autogenerated attributes, which also helps work around the lack of
private attributes in Python).

Whether or not this should be changed is tangential to the OP's point.
It must be a bit frustrating to state the obvious over and over and see
it misinterpreted each time.  Python has shortcomings.  This is one of
them, whether there's valid reasons for it or not.  It's better to
acknowledge it and offer something useful rather than "that isn't the
Python way, don't do it."


Cliff

-- 



From sjdevnull at yahoo.com  Sun Sep 10 08:49:13 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 10 Sep 2006 05:49:13 -0700
Subject: Secure Postgres access
In-Reply-To: <7xhczg7hh0.fsf@ruckus.brouhaha.com>
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
	<pan.2006.09.08.01.11.22.368386@umn.edu>
	<7xvenzt9zz.fsf@ruckus.brouhaha.com>
	<pan.2006.09.09.17.40.19.754820@reidster.net>
	<7xhczg7hh0.fsf@ruckus.brouhaha.com>
Message-ID: <1157892553.844758.40490@d34g2000cwd.googlegroups.com>

Paul Rubin wrote:
> Reid Priedhorsky <reid at reidster.net> writes:
> > B) Work machine. Run by others, many users. I'd like to also run my
> > database client (Python) here.
>
> Well, just how much do you distrust that machine?  If you think it's
> totally pwned by attackers who will stop at nothing to subvert your
> client, you shouldn't run the client there.

I got the impression that he didn't trust other normal users on the box
but that root wasn't hostile.

> > What I'd like is functionality similar to what Subversion does with
> > "svn+ssh://" URLs: an SSH tunnel that accepts only one connection and
> > doesn't have race conditions.
[SNIP]
> And even if you have an SSH mode that accepts just one connection,
> since your db app is separate and has to connect to the
> forwarding port after you use a separate program open the port,
> how do you stop someone else from grabbing it first?

(I think that's what he meant by "doesn't have race conditions".)

> That seems to mean one of:
>
>   2) authentication through SCM_CREDENTIALS on a PF_UNIX socket

That looks like the best option of those you list.

> Actually, looking at the doc for ssh-agent(1), it looks like it might
> do something like #2 above.  If I understand it, you would run your db
> client as something like
>
>    ssh-agent your-client &

That's cool, I'm looking for something similar, thanks!



From fuzzyman at gmail.com  Wed Sep 13 20:06:00 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 13 Sep 2006 17:06:00 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <4502F115.6080202@v.loewis.de>
References: <edp56g$66u$1@foggy.unx.sas.com><4502F115.6080202@v.loewis.de>
Message-ID: <1158192360.269240.61800@h48g2000cwc.googlegroups.com>


Martin v. L?wis wrote:
> Kevin D. Smith schrieb:
> > Then there is Mike Fletcher's web page
> > (http://www.vrplumber.com/programming/mstoolkit/) that describes in
> > detail how to build extensions, but most of the links to external
> > software are no longer valid.  I think it's safe to say that I am
> > completely lost, as there appears to be no authoritative, up-to-date
> > description on how to make this work.
>
> If all else fails, buy a copy of Visual Studio 2003. They are available
> fairly cheap at Ebay.
>

For some value of 'cheap'. They seem to go for about ?100 on ebay in
the UK. :-(

More interestingly, someone reported on Python-dev recently a speed
improvement of around 30% (from memory) by compiling with VC 8. I know
the grumble (almost certainly correctly) about Microsoft's 'odd'
interpretation of the C standards in VC 8, but it looks like there are
major benefits to switching...

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> Regards,
> Martin



From jasonrnorth at bigfoot.com  Sat Sep 16 17:28:54 2006
From: jasonrnorth at bigfoot.com (JR North)
Date: Sat, 16 Sep 2006 14:28:54 -0700
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of
	Zion
In-Reply-To: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
Message-ID: <IfmdnbA8PaYL8ZHYnZ2dnUVZ_smdnZ2d@seanet.com>

LOOK OUT!!!!! He has a bomb strapped to him!
JR
Dweller in the cellar

pope_ratzinger_benedict at india.com wrote:

> Do not bury your head in the sand ... Do not practice denial ... It
> will only bring you to terrible shame and grief ... Do not be afraid of
> saying the truth ... Do not be afraid of death ... God will take care
> of you and your kins as he took care of the flock of Abraham, Moses and
> Jesus.
> 
> Here you will find all the truth, movies, audios and proof for your
> eyes to see (even the swiss are beginning to doubt 911) :
> 
> www.scholarsfor911truth.org
> www.journalof911studies.org
> www.st911.org
> 
> also go to Alex Jones site:
> 
> infowars.com
> prisonplanet.com
> 
> Distribute fliers on the site at your churches and synagogues, in your
> schools. Call your elected officials. Mail anonymously to your local
> fire station chiefs and your local police
> sherrifs. Send, to any and all CIA, FBI, Military personell and Court
> Judges that you know.
> 
> We need to move fast and quick before the terrorists of 911 bring
> another false flag terrorism
> which may be biological, nuclear or what we cannot even imagine.
> 
> They dont care about the lives or the freedom of the american people.
> They only love their evil agendas.
> 
> God Bless you All
> 
> Search Keywords:
> Thermate
> Sulfur
> Potassium
> Manganese
> Aluminum
> Thermite
> Alex Jones
> Steven Jones
> Controlled Demolition
> Popular Mechanics
> Larry Silverstein
> Marvin Bush
> Stratcor
> Stratesec
> Ground Zero
> 


-- 
--------------------------------------------------------------
        Home Page: http://www.seanet.com/~jasonrnorth
       If you're not the lead dog, the view never changes
     Doubt yourself, and the real world will eat you alive
  The world doesn't revolve around you, it revolves around me
     No skeletons in the closet; just decomposing corpses
--------------------------------------------------------------
Dependence is Vulnerability:
--------------------------------------------------------------
"Open the Pod Bay Doors please, Hal"
"I'm sorry, Dave, I'm afraid I can't do that.."


From dannycolligan at gmail.com  Wed Sep 27 12:32:46 2006
From: dannycolligan at gmail.com (dannycolligan at gmail.com)
Date: 27 Sep 2006 09:32:46 -0700
Subject: Why don't optional mutable objects show up in vars(func)?
Message-ID: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>

So I just got bitten by the "don't use a mutable object as an optional
argument" gotcha.  I now realize that for this function:

>>> def func(x, y=[]):
...     y.append(x)
...     print y
...

y is initialized when the function is imported, not when the function
is executed.  However, if this is the case, then why is y not showing
up as an attribute of func?

>>> vars(func)
{}
>>> dir(func)
['__call__', '__class__', '__delattr__', '__dict__', '__doc__',
'__get__', '__getattribute__', '__hash__', '__init__', '__module__',
'__name__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',
'__setattr__', '__str__', 'func_closure', 'func_code', 'func_defaults',
'func_dict', 'func_doc', 'func_globals', 'func_name']

I'm using Python 2.4.3, if that is at all relevant.  Thanks in advance
for any help.

Danny



From kangtae49 at gmail.com  Mon Sep 11 20:54:04 2006
From: kangtae49 at gmail.com (kkt49)
Date: 11 Sep 2006 17:54:04 -0700
Subject: win32service (wxpython) -- i cannot install service
In-Reply-To: <45056AFE.8060501@websafe.com>
References: <1157948027.662154.233470@p79g2000cwp.googlegroups.com>
	<45056AFE.8060501@websafe.com>
Message-ID: <1158022444.651819.185390@d34g2000cwd.googlegroups.com>

under code service install => ok

    _svc_name_ = r'moin_service'
    _svc_display_name_ = r'moin_service'
    start_cmd = r"c:\mmde\moin.exe"
    #info = ['', '', '']

    def __init__(self):
        #self._svc_name = info[0]
        #self._svc_display_name_ = info[1]
        #self.start_cmd = info[2]

but, i want dynamic _svc_name_  and start_cmd


Larry Bates ??:

> I believe you misunderstand services.  They don't
> have user interfaces (UIs) like other programs.
> They run without any UI as background processes that
> are in basically in an infinite loop but with a way
> to break out of the loop (stop service).  If you wish
> to have a background service that has some sort of
> control UI, you need to write it as two parts.  The
> service and a UI that communicates with the service
> either through a shared file, pipe, or socket server/
> client interface.
>
> You should pick up a copy of Python Programming on
> Win32 which is an excellent reference book for writing
> Windows services.
> 
> -Larry Bates



From wescpy at gmail.com  Sat Sep 23 14:03:09 2006
From: wescpy at gmail.com (wesley chun)
Date: Sat, 23 Sep 2006 11:03:09 -0700
Subject: Timeline for Python?
Message-ID: <78b3a9580609231103h635eb467o9e85f444fb3e8864@mail.gmail.com>

> In article <1157097423.946429.261... at p79g2000cwp.googlegroups.com>,
>> crystalattice <crystalatt... at gmail.com> wrote:
>>
>>> From: "Sebastian Bassi" <sba... at gmail.com>
>>> Date: Thurs, Aug 31 2006 7:51 am
>>> Subject: Re: Timeline for Python?
>>> Groups: comp.lang.python
>>>
>>> I am working on a Python book, since it could be completed in about a
>>> year (writing time + edition + publishing) or more, I would like to
>>> know what version to target since I don't want to release a book that
>>> will be outdated just after is printed.
>>>       :
>>> So, if the book is published in October 2007, should feature Python 3
>>> or Python 2.5?
> >
> >I'd write for 2.4, even though 2.5 should be coming out "shortly".
> >There aren't many significant changes to the whole language between 2.4
> >and 2.5.  Probably the best thing is write for 2.4 and have a sidenote
> >stating where 2.5 operates differently.
>
> Speaking as the co-author of _Python for Dummies_:
>
> That's bad advice -- there are three Python books already out (or out
> within the next couple of weeks) that target 2.5: _Python in a Nutshell_,
> _Core Python_, and _Python for Dummies_.
>       :
> OTOH, I do agree that any book written should include diferences between
> 2.5 and earlier versions for the benefit of people needing to target
> earlier or multiple versions.


sorry to chime in 2 weeks late here, but i second aahz's opinion here,
as well as have some thoughts of my own:

1. never write against older versions of Python... you will only
    obsolete your book even faster (well, "sooner")

2. with respect to 2.4 vs. 2.5, there are some significant changes
    as aahz has pointed out; otherwise it would be 2.4.4.

3. personally speaking, i'm against targeting versions altogether.
    i guess i am a bit biased because in "Core Python Programming",
    the focus is the "core" part of the Python language, hence it
    should be as generic to specific versions as possible. i've
    made serious attempts to avoid being locked-in to any particular
    release. yes, i cover through 2.5, but also include stuff that have
    already been slated for 2.6 and 2.7.  what, if you can discuss, is
    the topic of *your* book?

4. with that said, i have taken aahz's final remark above quite
    seriously... i've gone to great lengths to add "tags" all over
    Core Python which state things like, "2.2", "2.5-2.7", "2.0", etc.
    to indicate when certain features were added, removed, or changed
    in the language.  this will support readers who are users of "any"
    version of Python.

and with a sigh of relief, i can happily tell everyone that Core
Python did finally hit the streets this week!  (more info at the link
below)

cheers,
-- wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From agarwaengrc at blabla_yahoo.com.au  Sun Sep 24 15:52:07 2006
From: agarwaengrc at blabla_yahoo.com.au (dtlog)
Date: Sun, 24 Sep 2006 22:52:07 +0300
Subject: newbie IronPython compiled scripts speed question
Message-ID: <op.tgees50h3p2nzo@fafoi.lan>

Hello, and sorry if this has been asked before...
I searched the faqs at python.org and didn't find an answer:
does using IronPython, instead of CPython, and compiling the
scripts into native windows executables (I heard IronPython
can do that) result in faster execution times? Or is it just
a matter of convenience (for use in systems without python
installed)?

So the question is, should I switch to IronPython and compile
my scripts, or learn to use something like pyinline or Psyco?


From mihamina.rakotomandimby at etu.univ-orleans.fr  Sat Sep 16 17:29:16 2006
From: mihamina.rakotomandimby at etu.univ-orleans.fr (Rakotomandimby (R12y))
Date: Sat, 16 Sep 2006 23:29:16 +0200
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
	<pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>
	<1158437430.667410.78480@i3g2000cwc.googlegroups.com>
	<mailman.186.1158439424.10491.python-list@python.org>
Message-ID: <pan.2006.09.16.21.29.16.265978@etu.univ-orleans.fr>

On Sat, 16 Sep 2006 22:43:41 +0200, Daniel Nogradi wrote:
> Then how about running your site on python and not php?

PHP has "better" documentation... ;-)
More seriously, I can provide a CPS hosting to nicolasfr if he wants.


From jaysherby at gmail.com  Sun Sep 17 11:05:49 2006
From: jaysherby at gmail.com (Jay)
Date: 17 Sep 2006 08:05:49 -0700
Subject: Python programs always open source?
In-Reply-To: <mailman.200.1158496161.10491.python-list@python.org>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<mailman.200.1158496161.10491.python-list@python.org>
Message-ID: <1158505549.695813.206860@h48g2000cwc.googlegroups.com>

Speaking of the bytecode, how does one create it?


Ben Finney wrote:
> "Guy Fawkes" <spare_the_rod at spoilthechild.com> writes:
>
> > I was wondering if Python programs always need to include the source
> > code with the program itself. I'm asking this because I don't want
> > my program to be open-source and so far all the Python programs I've
> > seen included the source code.
>
> You can license your own work to anyone you like, under any terms you
> choose. The source code to a work is necessary for users to exercise a
> free software license, but that doesn't mean that distributing source
> code necessarily grants a free software license.
>
> You're right that there is a great amount of Python code available
> under free software licenses. No-one can force you to join us, but
> you're welcome to.
>
> --
>  \         "My girlfriend has a queen sized bed; I have a court jester |
>   `\   sized bed. It's red and green and has bells on it, and the ends |
> _o__)                                      curl up."  -- Steven Wright |
> Ben Finney



From rshepard at appl-ecosys.com  Sat Sep 16 14:14:20 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Sat, 16 Sep 2006 11:14:20 -0700 (PDT)
Subject: Coding Nested Loops
In-Reply-To: <m24pv7em4m.fsf@unique.fqdn>
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.155.1158356025.10491.python-list@python.org>
	<eeg5o2$226$00$1@news.t-online.com>
	<mailman.176.1158420580.10491.python-list@python.org>
	<m2bqpfeq7d.fsf@unique.fqdn>
	<mailman.180.1158426398.10491.python-list@python.org>
	<m24pv7em4m.fsf@unique.fqdn>
Message-ID: <Pine.LNX.4.64.0609161113340.13961@salmo.appl-ecosys.com>

On Sat, 16 Sep 2006, Dan Sommers wrote:

> No, they all work the same way (thank goodness!).  The "." between "wx"
> and "frame" is the same dot as is between "random" and "choice" (i.e.,
> random.choice is the same construct as wx.frame).

   Ah, yes. I totally forgot this.

Thanks for the reminder,

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From google at mrabarnett.plus.com  Fri Sep 15 18:51:30 2006
From: google at mrabarnett.plus.com (MRAB)
Date: 15 Sep 2006 15:51:30 -0700
Subject: min() & max() vs sorted()
In-Reply-To: <mailman.113.1158281793.10491.python-list@python.org>
References: <1158280516.219493.61600@p79g2000cwp.googlegroups.com>
	<mailman.113.1158281793.10491.python-list@python.org>
Message-ID: <1158360690.311434.208840@p79g2000cwp.googlegroups.com>


Tim Peters wrote:
> [MRAB]
> > Some time after reading about Python 2.5 and how the built-in functions
> > 'min' and 'max' will be getting a new 'key' argument, I wondered how
> > they would treat those cases where the keys were the same, for example:
> >
> > L = ["four", "five"]
> > print min(L, key = len), max(L, key = len)
> >
> > The result is:
> >
> > ('four', 'four')
>
> min() and max() both work left-to-right, and return the minimal or
> maximal element at the smallest index.
>
It doesn't say that in the documentation.

> > I would've thought that min(...) should return the same as
> > sorted(...)[0] (which it does)
>
> It does, but only because Python's sort is stable, so that minimal
> elements retain their original relative order.  That implies that the
> minimal element with smallest original index will end up at index 0
> after sorting.
>
> > and that max(...) should return the same as sorted(...)[-1] (which it doesn't).
>
> Right -- although I don't know why you'd expect that.
>
Strings have index(), find(), etc which work left-to-right and
rindex(), rfind(), etc which work right-to-left.

Lists have index() but not rindex().

I just thought that if min() and max() work left-to-right then for
completeness there should also be rmin() and rmax(); alternatively,
min() should return sorted()[0] and max() should return sorted()[-1]
for symmetry (my personal preference).



From brendandetracey at yahoo.com  Fri Sep 22 13:00:35 2006
From: brendandetracey at yahoo.com (Brendan)
Date: 22 Sep 2006 10:00:35 -0700
Subject: Why are the topic and keyword documentation not includded in the chm?
Message-ID: <1158944435.606128.225800@k70g2000cwa.googlegroups.com>

1)Why are the  topic and keyword documentation not included in the
Windows installation chm? I have to have both the html(with the env var
PYTHONDOCS set) and the chm installed? What is the point of that?

2)Is there no simple way to open the chm docs in a browser from within
python?

3)How do I open the online pydoc browser from within python? (Sure I
can open it using the start menu shortcut or from the OS command prompt
with: python C:\python25\lib\pydoc.py -w, but why would I not want to
be able to open it from the python command prompt?)

Why are these issues not made clear somewhere in plain view such as
Getting Started or in the installation notes?

Thanks



From dieter at handshake.de  Thu Sep 28 16:48:21 2006
From: dieter at handshake.de (Dieter Maurer)
Date: 28 Sep 2006 22:48:21 +0200
Subject: Survival of the fittest
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
	<pan.2006.09.27.03.06.55.347276@comcast.net>
Message-ID: <x7wt7niup6.fsf@handshake.de>

Thomas Bartkus <thomasbartkus at comcast.net> writes on Tue, 26 Sep 2006 22:06:56 -0500:
> ...
> We would be curious to know about those things you can do in C++
> but can't do in Python.

I implemented an incremental search engine in Python.

It worked fine for large quite specific "and" queries (it
was faster than a C implemented search engine).

However, for large "or" queries, it was by two orders of magnitude
slower then the C competitor.

I had to move my implementation to C. Now my search engine is
almost always (significantly) faster and when it is slower,
the difference is negligeable.


We learn: a C/C++ implementation can in some cases be drastically
more efficient than a Python one.

My special case was that almost all my data were integers
and the C implementation could exploit this fact -- unlike the Python one.

--
Dieter


From XX.XmcX at XX.XmclaveauX.com  Thu Sep 28 17:20:26 2006
From: XX.XmcX at XX.XmclaveauX.com (MC)
Date: Thu, 28 Sep 2006 23:20:26 +0200
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>

Bonjour !

Comme tu es fran?ais, tu me coprendras.

Alors :
  - windev est ferm?, et prot?g? par des dongles. R?sultat : dongle 
perdu, en panne, ou vol?, il faut racheter une licence (c'est arriv? ? 
un ami)
  - le langage de windev est beaucoup moins ?volu? que Python. Et, 
quand je dis beaucoup, c'est faible... Python a des possibilit?s 
?normes en programmation proc?durale, en Orient? Objet, et, m?me, en 
programmation fonctionnelle.
  - la structure interne de Python est extraordinaire. Vraiment.
  - Python est tr?s facile ? apprendre. Il existe beaucoup de 
ressources, m?me en fran?ais, sur Internet, dans des livres, etc.
  - Python est un langage stable, avec tr?s tr?s peu de bugs/probl?mes. 
Sur ce point, windev marque s?rieusement le pas. Sur certains forums 
consacr?s ? windev, le nombre de bugs signal?s ?tait effarant.
  - les librairies disponibles pour Python couvrent un spectre beaucoup 
plus large que celles disponibles pour windev
  - les bases de donn?es int?gr?es ? windev sont issues du vieux moteur 
"hyperfile", beaucoup trop limit?. Avec Python, on peut choisir le SGBD 
que l'on veut, sans trop de soucis. Depuis SQL-lite, jusqu'? Oracle (XE 
ou autre), on peut assumer tous les niveaux de puissance n?cessaire.
  - avec Python, on peut faire du multi-threading, du r?parti, des 
applications web, consoles, invisibles (services), des serveurs COM, 
d?velopper des interfaces, ou en utiliser de toutes pr?tes, travailler 
sur du r?seau, piloter des ?quipements industriels, etc. etc.
  - je n'utilise pas le "libre" comme argument, sauf pour un point : si 
pc-soft (?diteur de windev) a, un jour de grosses difficult?s, le 
produit pourrait bien disparaitre soudainement, ce qui n'est pas le cas 
de Python, maintenu par une communaut?. Or, il y a peu d'ann?es, cette 
bo?te a eu, justement, d'importants probl?mes financiers.

Le gros point fort de windev, c'est un marketing tr?s agressif. 
D'ailleurs, si tu veux manger et boire ? l'oeil, va suivre les 
pr?sentations.

Avant dernier point : tu aurais pu mettre ton message dans le newsgroup 
fran?ais sur Python.

Dernier point : si quelqu'un veut traduire ce message, il a mon accord 
tout entier.



-- 
@-salutations

Michel Claveau




From ramasubramani.g at gmail.com  Wed Sep  6 07:06:41 2006
From: ramasubramani.g at gmail.com (Rama)
Date: Wed, 6 Sep 2006 16:36:41 +0530
Subject: Getting Process Name on Win32
In-Reply-To: <CCAC78D42E32184F8E26DC163DB98306C1B415@vogbs009.gb.vo.local>
References: <CCAC78D42E32184F8E26DC163DB98306C1B415@vogbs009.gb.vo.local>
Message-ID: <3f8d3ac50609060406m4ebb8253i4bf9cde182ad8e6@mail.gmail.com>

On 06/09/06, Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
>
> [Rama]
>
> |      I want to list the names of all the processes running on
> | my machine. I am stuck at this point and do not know how to
> | extract the name of a process.
>
> WMI is good for this kind of thing:
>
> http://tgolden.sc.sabren.com/python/wmi_cookbook.html#running_processes
>
>
Awesome. That works for me.

Just curious, however - is there any way at all to get this through the
win32* modules? I notice that there is a Windows API -
QueryFullProcessImageName
- but I don't see this in these modules (or maybe I am not looking closely
enought).

thanks,
Rama
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From rdiaz02 at gmail.com  Fri Sep 15 03:56:52 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Fri, 15 Sep 2006 09:56:52 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <2apOg.1348$6S3.655@newssvr25.news.prodigy.net>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158183392.526021.212220@d34g2000cwd.googlegroups.com>
	<Y94Og.938$TV3.21@newssvr21.news.prodigy.com>
	<mailman.74.1158226021.10491.python-list@python.org>
	<2apOg.1348$6S3.655@newssvr25.news.prodigy.net>
Message-ID: <624934630609150056m1267b6ci97fd574b443c9c1@mail.gmail.com>

On 9/15/06, David J. Braden <dbraden at invalid.add> wrote:
> Wildemar Wildenburger wrote:

(...)
> > jEdit is extensible though java, and with the jython plugin also through
> > python.
>
> Thanks. That helps me get a sense of the landscape.

As an emacs user, this is a clear plus for JEdit (and for vim, for that matter).

>
> Very much so, and many thanks. My only languages are C and VBA, and the
> environments of R and Mathematica (hey, I'm ancient).

If the "R" you refer is the statistical environment, "GNU S", then you
probably want to check Emacs (with ESS): you get an integrated
environment where you can edit code, submit code pieces (lines,
regions, buffers, functions, etc) to a running R process (which looks
like another Emacs buffer),  opening R help in another buffer (with
the possibility of executing the example in the R process), clean up a
transcript of an R session to keep only the code, etc, etc, etc.
Moeover, you get a "smart" edition of Sweave (noweb literate
programming), where emacs knows when you are in a LaTeX part and when
you are in an R code chunck.

Alternatively, in the Windoze world, you might want to check Tinn-R,
which, regarding R, provides some similar functionality, and I think
it is also very nice for Python, LaTeX, etc.

HTH,

R.

-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From john at castleamber.com  Tue Sep 26 19:18:14 2006
From: john at castleamber.com (John Bokma)
Date: 26 Sep 2006 23:18:14 GMT
Subject: A critique of cgi.escape
References: <slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
Message-ID: <Xns984ABA8B57753castleamber@130.133.1.4>

Brian Quinlan <brian at sweetapp.com> wrote:

> A summary of this pointless argument:
> 
> Why cgi.escape should be changed to escape double quote (and maybe
>     single quote) characters by default:
> o escaping should be very aggressive by default to avoid subtle bugs
> o over-escaping is not likely to harm most program significantly
> o people who do not read the documentation may be surprised by it's
>    behavior
> 
> Why cgi.escape should NOT be changed:
> o it is current used in lots of code and changing it will almost
>    certainly break some of it, test suites at minimum e.g.
>    assert my_template_system("<p>{foo}</p>", foo='"') == '<p>"</p>'

You must be kidding.

> o escaping attribute values is less common than escaping element
>    text

Again, you must be kidding: href="/search.cgi?query=3&results=10"

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From chris.cavalaria at free.fr  Tue Sep 26 07:39:51 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Tue, 26 Sep 2006 13:39:51 +0200
Subject: A critique of cgi.escape
In-Reply-To: <R0z*8lKrr@news.chiark.greenend.org.uk>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<R0z*8lKrr@news.chiark.greenend.org.uk>
Message-ID: <45191187$0$19003$636a55ce@news.free.fr>

Sion Arrowsmith a ?crit :
> Jon Ribbens  <jon+usenet at unequivocal.co.uk> wrote:
>> In article <Xns98499CF9DCEE4duncanbooth at 127.0.0.1>, Duncan Booth wrote:
>>> I guess you've never seen anyone write tests which retrieve some generated 
>>> html and compare it against the expected value. If the page contains any 
>>> unescaped quotes then this change would break it.
>> You're right - I've never seen anyone do such a thing. It sounds like
>> a highly dubious and very fragile sort of test to me, of very limited
>> use.
> 
> So what sort of test would you use, that doesn't involve comparing
> actual output against expected output?

Well, one could say that the expected output is the one as it'll be 
interpreted by the HTLM navigator. And thus, the test should un HTLM 
escape the string and compare it to the original string instead of 
mandating a specific encoding.


From torerik81 at gmail.com  Sat Sep  2 17:05:31 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Sat, 02 Sep 2006 23:05:31 +0200
Subject: Client-side TCP socket receiving "Address already in use" upon connect
Message-ID: <edcrms$auj$1@news.uit.no>

Hi,

The reason is that my application does about 16 connects and data 
transfers per second, to the same 16 remote hosts. After approx 200 secs 
there are 4000 sockets waiting to be garbage collected by the OS. At 
this point is seems that connect loops and starts using the same local 
addresses it used 4000 connections ago, resulting in an "Address already 
in use" exception.

A possible solution to this would be to keep the connection to each 
remote host open, but that would require parsing of the received data 
into the data items (which are files by the way) sent by the application.

My question is if there are any other methods of solving this? Maybe a 
socket option of some sort...

regards


From mjj at pythonin.dk  Sun Sep 10 10:52:34 2006
From: mjj at pythonin.dk (Morten Juhl Johansen)
Date: Sun, 10 Sep 2006 16:52:34 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <1157804310.885280.53070@b28g2000cwb.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1157804310.885280.53070@b28g2000cwb.googlegroups.com>
Message-ID: <450425dd$0$75041$14726298@news.sunsite.dk>

mystilleef wrote:
> I recommend Scribes.
> 
> http://scribes.sf.net

Scribes looks good. Does it need any Gnome components except what is
mentioned @ http://scribes.sourceforge.net/documentation.html#requirements ?

Yours,
Morten


From ak at silmarill.org  Sun Sep 24 12:32:44 2006
From: ak at silmarill.org (Rainy)
Date: 24 Sep 2006 09:32:44 -0700
Subject: Ideal python idle
In-Reply-To: <ZWsRg.5785$7I1.660@newssvr27.news.prodigy.net>
References: <ZWsRg.5785$7I1.660@newssvr27.news.prodigy.net>
Message-ID: <1159115564.370694.108190@i3g2000cwc.googlegroups.com>

James Stroud wrote:
> Hello,
>
> I decided that the ultimate python IDE would basically be a vim editor
> with a hotkey or button that ran the currently edited module as
> "__main__", allowing gui (tkinter, wx) windows to spawn etc.
[snip]

Hi James, I'm sure I'm missing something here, but doesn't :!python %
command run the script as __main__? It sure does spawn gui windows for
me. What exactly is the problem with using that command? It does not
return you to the line where the error happened but the runscript.vim
you mentioned doesn't seem to do that either.

-Rainy



From ak at silmarill.org  Sun Sep 24 13:09:16 2006
From: ak at silmarill.org (Rainy)
Date: 24 Sep 2006 10:09:16 -0700
Subject: What is the best way to "get" a web page?
In-Reply-To: <1159115212.945175.245670@b28g2000cwb.googlegroups.com>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<92nRg.4760$nX4.2074@tornado.texas.rr.com>
	<1159069783.563618.80380@k70g2000cwa.googlegroups.com>
	<1159072858.576765.9020@k70g2000cwa.googlegroups.com>
	<1159115212.945175.245670@b28g2000cwb.googlegroups.com>
Message-ID: <1159117755.949467.109740@k70g2000cwa.googlegroups.com>


Pete wrote:
> > > The file "temp.html" is definitely different than the first run, but
> > > still not anything close to www.python.org . Any other suggestions?
> >
> > If you mean that the page looks different in a browser, for one thing
> > you have to download the css files too. Here's the relevant extract
> > from the main page:
> >
> > <link media="screen" href="styles/screen-switcher-default.css"
> > type="text/css" id="screen-switcher-stylesheet" rel="stylesheet" />
> > <link media="scReen" href="styles/netscape4.css" type="text/css"
> > rel="stylesheet" />
> > <link media="print" href="styles/print.css" type="text/css"
> > rel="stylesheet" />
> > <link media="screen" href="styles/largestyles.css" type="text/css"
> > rel="alternate stylesheet" title="large text" />
> > <link media="screen" href="styles/defaultfonts.css" type="text/css"
> > rel="alternate stylesheet" title="default fonts" />
> >
> > You may either hardcode the urls of the css files, or parse the page,
> > extract the css links and normalize them to absolute urls. The first is
> > simpler but the second is more robust, in case a new css is added or an
> > existing one is renamed or removed.
> >
> > George
>
> Thanks for the information on CSS. I'll look into that later, but now
> my question is on the first two lines of HTML code. Here's my latest
> python code:
>
> >>> import urllib
> >>> web_page = urllib.urlopen("http://www.python.org")
> >>> fileTemp = open("temp.html", "w")
> >>> web_page_contents = web_page.read()
> >>> fileTemp.write(web_page_contents)
> >>> fileTemp.close()
>
> Here are the first two lines of temp.html:
>
>       1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/x        html1/DTD/xhtml1-transitional.dtd">
>       2 <html lang="en" xml:lang="en"
> xmlns="http://www.w3.org/1999/xhtml">
>
> Here are the first two lines of www.python.org as saved from Firefox:
>
>       1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/x        html1/DTD/xhtml1-transitional.dtd">
>       2 <html xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"
> lang="en"><head>
>
> Lines one are identical. Lines two are different. Why would lines two
> differ? Hmmmm...

Functionally they are the same, but third line included in Firefox.
Opera View Source command produces the same result as Python. It looks
like Firefox will do some cosmetic changes to source but nothing that
would change the way code works. Notice that attributes in second line
are re-arranged in order only?

> 
> Thanks,
> Pete



From enleverlesX.XmcX at XmclaveauX.com  Fri Sep 29 08:26:53 2006
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI)
Date: Fri, 29 Sep 2006 14:26:53 +0200
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
Message-ID: <451d1cf1$0$27390$ba4acef3@news.orange.fr>

Re-Bonjour !

J'avais ?crit, dans le message pr?c?dent, que la soci?t? PC-Soft avait eu 
des difficult?s financi?res, il y a plusieurs ann?es.

Comme je n'ai pas eu l'occasion de v?rifier cette information, (et ? la 
demande de la soci?t? PC-Soft), je demande donc aux lecteurs de consid?rer 
cette information comme nulle.

Concentrez-vous sur le reste du message.

@-salutations

Michel Claveau





From larry.bates at websafe.com  Wed Sep 13 18:14:13 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 13 Sep 2006 17:14:13 -0500
Subject: win32service (wxpython) -- i cannot install service
In-Reply-To: <450881DF.7040307@websafe.com>
References: <1157948027.662154.233470@p79g2000cwp.googlegroups.com>
	<45056AFE.8060501@websafe.com>
	<1158022444.651819.185390@d34g2000cwd.googlegroups.com>
	<450881DF.7040307@websafe.com>
Message-ID: <450882B5.4030002@websafe.com>

Larry Bates wrote:
> kkt49 wrote:
>> under code service install => ok
>>
>>     _svc_name_ = r'moin_service'
>>     _svc_display_name_ = r'moin_service'
>>     start_cmd = r"c:\mmde\moin.exe"
>>     #info = ['', '', '']
>>
>>     def __init__(self):
>>         #self._svc_name = info[0]
>>         #self._svc_display_name_ = info[1]
>>         #self.start_cmd = info[2]
>>
>> but, i want dynamic _svc_name_  and start_cmd
> 
> Services aren't dynamic in nature.  They are static, are
> given names (that are used to start, stop, etc.) and get
> installed into servicemanager on Windows workstation or
> server.  Their behavior could be dynamic, that is you could
> change what they do by communicating with them via external
> means.
> 
> I think you better back up and tell us what you are trying
> to do at a higher level.  Perhaps we can help more.
> 
> -Larry

Sorry, after I clicked send I "think" I understand what you
want.  You can't make a .EXE program run as a service by
starting it as a service.  If thats not what you are trying
to do, give us some more high-level info about what it is
that you are trying to accomplish.

-Larry


From mensanator at aol.com  Fri Sep  8 17:48:28 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 8 Sep 2006 14:48:28 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
Message-ID: <1157752108.456624.146270@i3g2000cwc.googlegroups.com>

Magnus Lycka wrote:
> While I can understand your frustration, I think it is
> important to think about the tone in our postings here.
> Hydrocephalus is one of the most common birth defects,
> and it's not terribly unlikely that someone who reads
> this has a family member or someone else in his proximity
> who suffers from this condition.

Ok, I appologize. No more Larry the Cable Guy humor.
I'll stick with Monty Python and Douglas Adams.

>
> mensanator at aol.com wrote:
> > "Fixed"? Up until now, I didn't think it was possible for
> > crackpot theories to be implemented in computer science.
> > This is absolutely the craziest thing I've ever heard.
>
> Still, many people with lots of experience in databases
> use it, and prefer it for certain kinds of applications.
> All systems have limitations and deviations, and those
> limitations and deviations are stated more clearly for
> SQLite than for most commercial products at least.

But they're not stated up front. The deviations from
standard SQL are extreme enough to warrant mentioning
in the Python docs.

> The
> market leader Oracle still can't store empty strings in
> VARCHAR fields for instance. They are silently converted
> to NULL. I'm pretty sure that has been in clear violation
> to the official spec since 1986 at least.

But does Oracle claim the specification is a bug?

>
> As far as I understand, noone here is forcing you to use
> SQLite,

As long as it's included in the standard library, I'm going
to use it. There is nothing wrong with the idea of a "lite"
database. It is very misleading, though, to claim it's SQL.

> and with your long experience of MS Access I'd
> expect you to be fairly used to "almost SQL"... It's
> some time since I used Jet/Access now, but I had much
> more problems with that than I've had with SQLite.
>
> SQLite is built in Tcl, by someone who appreciates the
> way Tcl works, with its weak typing. I don't think Tcl's
> type handling is nearly as clever as Python's, but I
> think it's a good thing that Python's standard lib finally
> has a DB-API compliant module, and while I would have
> preferred something that was closer to standard SQL, I
> don't know of a better candidate than SQLite.
>
> It's good that it's usable without a server setup, and
> that it's very light weight. A Jet engine is obviously
> not an option, and I would have preferred SQLite even
> if Jet was open source and worked on all platforms.
> (Well, if JET *was* open source, I suspect it would
> have been fixed by now.) It's possible that one could
> have used the embedded version of Firebird instead, but
> in my experience that's not nearly as lean or easy to
> deploy.
>
> With your long experience of Access and SQL Server I'm
> sure you know well that any attempt to build a working
> database application requires extensive knowledge of
> the backend to understand its peculiarities and
> limitations.
>
> The list of software projects where not quite competent
> developers built Access applications that worked ok in
> small scale tests and failed catastrophically in real
> life is looong...
>
> Of course, if you've stayed with one vendor for 15 years,
> I can imagine that you've forgotten how long it took you
> Having worked with half a dozen backends or so, I'm no
> longer surprised that SQL can be interpreted in so many
> ways... I agree that SQLite is unique in it's approach
> to typing, but if you are aware of this, it's really not
> a big problem.

Ok, I'm now aware of it.

I'm aware that all my WHERE clauses will have to be
modified to allow for text that may show up in my numeric
fields.

I'm aware that all my ORDER BY clauses will have to
be modified for the same reason.

And I'm aware that INNER JOIN doesn't even work in
theory with dynamic typed fields and can't even be
worked around like the WHERE and ORDER BY clauses
can.

And given a typical query I use:

SELECT tblLocations.SiteID,
       tblSites.SiteName,
       tblLocations.IEPALocationNumber,
       tblZones.Zone,
       tblSampleEvent.SampleEventCode,
       tblSampleAnalyses.SampleDate,
       tblSamples.SampleMatrixID,
       tblSamples.SampleNumber,
       tblRefQAQCTypes.QAQCType,
       tblResults.LabSampleNumber,
       tblRefParameterGroups.ParameterGroupCode,
       tblSampleAnalyses.AnalysisID,
       tblRefAnalyses.AnalysisTypeCode,
       tblRefParameters.ParameterReportLabel,
       tblRefParameters.CASNumber,
       tblResults.Result,
       tblResults.Qualifier,
       tblRefUnitOfMeasure.Unit,
       Val(Format$(IIf(([tblResults].[unitid]=5) Or
                       ([tblResults].[unitid]=7),
                        [result]/1000,[result]),
                         "0.0000"))
       AS the_ppm_result,
       IIf([tblResults].[unitid]=7,"mg/kg",
           IIf([tblResults].[unitid]=5,"mg/L",
           [unit]))
       AS the_ppm_unit,
       Val(Format$(IIf(([tblResults].[unitid]=5) Or
                       ([tblResults].[unitid]=7),
                        [quantitationlimit]/1000,
                        [quantitationlimit]),"0.0000"))
       AS the_ppm_dl,
       IIf(IsNull([qualifier]) Or
                 ([qualifier] Not Like "*U*"),1,0)
       AS detect,
       IIf([detect] And
           [the_ppm_result]>[tbl_GW_classi],"1","0")
       AS x,
       IIf([detect] And
           [the_ppm_result]>[tbl_GW_classi],"!","_")
       AS xflag,
       Master_Lookup.Tbl_pH_range,
       Master_Lookup.Tbl_GW_units,
       Master_Lookup.Tbl_GW_ClassI,
       tblResults.Comment,
       IIf([detect],[the_ppm_result],[the_ppm_result]/2)
       AS detected_result,
       IIf([detect],[the_ppm_result],Null)
       AS detected_max_result
FROM tblSites
INNER JOIN ((tblSampleEvent
INNER JOIN (tblRefQAQCTypes
INNER JOIN ((tblSamples
INNER JOIN tblLocations
ON tblSamples.TrueLocation = tblLocations.LocationID)
INNER JOIN tblZones
ON tblLocations.LocationID = tblZones.LocationID)
ON tblRefQAQCTypes.QAQCID = tblSamples.QAQCID)
ON tblSampleEvent.EventID = tblSamples.EventID)
INNER JOIN ((tblRefAnalyses
INNER JOIN tblSampleAnalyses
ON tblRefAnalyses.AnalysisID = tblSampleAnalyses.AnalysisID)
INNER JOIN (tblRefUnitOfMeasure
INNER JOIN ((tblRefParameterGroups
INNER JOIN (tblRefParameters
LEFT JOIN Master_Lookup
ON tblRefParameters.CASNumber = Master_Lookup.Tbl__B_cas)
ON tblRefParameterGroups.ParameterGroupID =
tblRefParameters.ParameterGroupID)
INNER JOIN tblResults
ON tblRefParameters.ParameterID = tblResults.ParameterID)
ON tblRefUnitOfMeasure.UnitID = tblResults.UnitID)
ON tblSampleAnalyses.SampleAnalysisID = tblResults.SampleAnalysisID)
ON tblSamples.SampleID = tblSampleAnalyses.SampleID)
ON tblSites.SiteID = tblLocations.SiteID
WHERE (((tblLocations.SiteID)<51)
AND (Not (tblLocations.IEPALocationNumber)="G116")
AND ((tblZones.Zone)="UMAquifer")
AND ((tblSampleEvent.SampleEventCode) Like "200[2-6]Q*")
AND ((tblSamples.SampleMatrixID)=1)
AND ((tblSampleAnalyses.AnalysisID)>1)
AND ((tblResults.Qualifier) Is Null)
AND ((Master_Lookup.Tbl_pH_range)="pH 6.9 to 7.24" Or
     (Master_Lookup.Tbl_pH_range) Is Null)
AND ((tblSamples.QAQCID)=1 Or (tblSamples.QAQCID)=4))
OR  (((tblLocations.SiteID)<51)
AND (Not (tblLocations.IEPALocationNumber)="G116")
AND ((tblZones.Zone)="UMAquifer")
AND ((tblSampleEvent.SampleEventCode) Like "200[2-6]Q*")
AND ((tblSamples.SampleMatrixID)=1)
AND ((tblSampleAnalyses.AnalysisID)>1)
AND ((tblResults.Qualifier) Not Like "*Z*" And
     (tblResults.Qualifier) Not Like "*R*")
AND ((Master_Lookup.Tbl_pH_range)="pH 6.9 to 7.24" Or
     (Master_Lookup.Tbl_pH_range) Is Null)
AND ((tblSamples.QAQCID)=1 Or
     (tblSamples.QAQCID)=4))
ORDER BY tblLocations.SiteID,
         tblLocations.IEPALocationNumber,
         tblSampleEvent.SampleEventCode,
         tblRefParameterGroups.ParameterGroupCode,
         tblRefParameters.ParameterReportLabel,
         tblSampleAnalyses.SampleDate;

you're saying I don't have a big problem?



From steve at holdenweb.com  Sat Sep 30 03:38:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 08:38:22 +0100
Subject: DAT file compilation
In-Reply-To: <1159576888.862008.286980@m73g2000cwd.googlegroups.com>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>	<4o5qhvFd1bddU1@uni-berlin.de>	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>
	<1159576888.862008.286980@m73g2000cwd.googlegroups.com>
Message-ID: <efl6rq$b0i$3@sea.gmane.org>

Jay wrote:
> That cgi idea is really cool, but I don't have any web space to host
> the files.  Plus the bandwidth required would be deadly.  I think I'll
> just have to stick to the zip file idea.  The problem with the
> read-only is that this program is aimed at a Windows audience.

So don't call it something.zip. Since most Windows users rely on the 
registry to discern filetypes from extensions you will probably find in 
practice that very few actually poke about with your ".dat" file that's 
actually a zip.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Mon Sep 25 08:45:29 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 08:45:29 -0400
Subject: QuoteSQL
In-Reply-To: <ef8d06$fui$5@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8d06$fui$5@lust.ihug.co.nz>
Message-ID: <ef8ivo$dd4$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <slrnehfah2.foq.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
> wrote:
> 
> 
>>Duncan Booth enlightened us with:
>>
>>>I think his point was that any '%' characters inside name act like
>>>wildcards whereas his version looked for literal percents.
>>
>>But of course.
>>
>>
>>>This could be an argument for having a utility function to escape
>>>the wildcards for this sort of situation, but certainly not an
>>>argument for his proposed QuoteSQL.
>>
>>Indeed. An escaping function should be small and not do all kinds of
>>escaping for different situations at once.
> 
> 
> Look at it this way: there is _no_ case where you need escaping of wildcards
> without also escaping other specials.

Yes, there is, so please lose the bombast.

When you use the DB API correctly and paramterise your queries you still 
need to quote wildcards in search arguments, but you absolutely 
shouldn't quote the other SQL specials.

That's what parameterised queries are for on the first place, and they 
have a portability advantage among other reasons why you should use them 
(another's potential efficiency).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From noah at noah.org  Fri Sep  8 14:52:57 2006
From: noah at noah.org (Noah)
Date: 8 Sep 2006 11:52:57 -0700
Subject: super and __init__
Message-ID: <1157741577.676925.288290@h48g2000cwc.googlegroups.com>

Am I the only one that finds the super function to be confusing?

I have a base class that inherits from object.
In other words new style class:

class foo (object):
    def __init__ (self, arg_A, arg_B):
        self.a = arg_A
        self.b = arg_B
        #   Do I need to call __init__ on "object" base class?

class bar (foo):
    def __init__ (self, arg_Z):
        self.z = "Z" + arg_Z
        foo.__init__(self, 'A', arg_Z)    #  this is the old-style
class way
    def __str__ (self):
        return self.a + self.b + self.z

I don't know how people will use the "bar" class
in terms of inheritance. I don't want to lock anyone
out of multiple inheritance, but I'd like to  have to
worry about it as little as possible. From what I've
read using  the  old style of calling the
base class __init__ can cause conflicts
if the class is later part of a diamond relationship.

I just want "bar" to initialize the properties that it add
to the base class and to have it tell the base class to
initialize the inherited properties. The old way seemed
clear enough; although, a bit ugly. The super function
seems like it would make this more clear, but
it doesn't (to me).

Is there a "just do this" answer for 90% of the use cases?

Yours,
Noah



From manuel at prolink.de  Fri Sep  1 06:06:39 2006
From: manuel at prolink.de (Manuel Bleichner)
Date: Fri, 01 Sep 2006 12:06:39 +0200
Subject: Classes referencing each other
In-Reply-To: <ed8vpi$tej$1@news.albasani.net>
References: <mailman.10236.1157100375.27775.python-list@python.org>
	<ed8vpi$tej$1@news.albasani.net>
Message-ID: <op.te62dddn58416w@merkur.intern.prolink.de>

Thanks for the answer.

> You could move all connections to a central location after the
> class definitions, such as
>
> class A: pass
> class B: pass
> class C: pass
>
> connections = {A: (B, C), B: (C,), C: (A,)}


I think I simplified my classes a bit too much :)
Actually there are multiple types of connections between
the classes. for example:

class A(CableConnected, WLANConnected):
   name = 'I am class A'
   cable_connections = [B, C]
   wlan_connections = [D]

class B(CableConnected, RadioConnected):
   name = 'I am class B'
   cable_connections = [C, A]
   radio_connections = [F]
...

And because not all classes have the same types of connections,
it would become extremely unreadable to try to define them
at a central place. Also it seperates attributes from each other;
'name' is defined in the class, the connections somewhere else.

Greetings,
Manuel


From isalazar80 at yahoo.com.mx  Mon Sep 18 20:09:22 2006
From: isalazar80 at yahoo.com.mx (citlaly)
Date: 18 Sep 2006 17:09:22 -0700
Subject: Read a group of files as a list
Message-ID: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>

Hi!!
I'm a beginner in python and I'm trying to use the files from a
"folder" as a list. What I want to do is  read each one as a list, but
just the name of the file, the data inside doesn't matter. How can I do
it?  I was trying using a list, but I don't know how "convert" the
elements (files) to a list that I can read and manipulate...

Thanks in advance for your help!!

Citlaly....



From ilias at lazaridis.com  Tue Sep 26 11:24:15 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 26 Sep 2006 08:24:15 -0700
Subject: String Pattern Matching: regex and Python regex documentation
In-Reply-To: <mailman.550.1159161117.10491.python-list@python.org>
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
	<45143567.2000903@lazaridis.com> <YC1Rg.1266$8O1.99@trnddc04>
	<1159154130.615032.194810@i3g2000cwc.googlegroups.com>
	<mailman.550.1159161117.10491.python-list@python.org>
Message-ID: <1159284255.304527.30520@m73g2000cwd.googlegroups.com>

Steve Holden wrote:
> Xah Lee wrote:
...
> > This project was undertaken as a response to a challenge put forth to
> > me with a $100 reward, on 2005-04-12 on comp.lang.python newsgroup. I
> > never received the due reward.
> >
> Your reading skills must be terrible. You never received the reward
> because it never became due. I offered you $100 if (I believe) five
> regular readers of c.l.py wrote me to say your version was an
> improvement on the original documentation.
>
> So far (it's now been over a year since your publication, IIRC) not one
> single person has written to me. So while your version of the docs may
> have some merit, it certainly doesn't fulfil the advertised requirements
> for the reward. Which therefore isn't due.

This justification sounds rational.

Possibly this should be published in a seperate topic, asking people to
review the 2 doc's, whilst giving publically(!) their vote.

Finally, all this can contribute to better python documentation (and,
sorry, python doc's  need _really_ a rework).

--
http://lazaridis.com



From aisaac0 at verizon.net  Mon Sep  4 11:28:58 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 04 Sep 2006 15:28:58 GMT
Subject: replace deepest level of nested list
References: <5lWKg.17116$CL6.8808@trnddc06>
Message-ID: <_CXKg.1654$m36.1292@trnddc02>

Thanks to both Roberto and George.
I had considered the recursive solution
but was worried about its efficiency.
I had not seen how to implement the numpy
solution, which looks pretty nice.

Thanks!
Alan




From python.list at tim.thechases.com  Wed Sep 13 11:26:10 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 13 Sep 2006 10:26:10 -0500
Subject: Unit balancing
In-Reply-To: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
References: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
Message-ID: <45082312.3010309@tim.thechases.com>

> I am working with a researcher who would be very happy if he
> could include units in his calculations.  Then, if his
> complicated expression didn't result in "kg/yr" the program
> would stop and point out his error.
> 
> Does Python (or SciPy or ..) offer this feature?


Well, it's a bit of a hack, but you could try something like

###########################################
class InvalidUnits(Exception): pass

class Unit(object):
	def __init__(self, value, units = ''):
		self.value = value
		self.units = units
	def __sub__(self, other):
		if isinstance(other, Unit):
			if self.units <> other.units:
				raise InvalidUnits
			return Unit(self.value - other.value, self.units)
		return Unit(self.value - other, self.units)
	def __add__(self, other):
		if isinstance(other, Unit):
			if self.units <> other.units:
				raise InvalidUnits
			return Unit(self.value + other.value, self.units)
		return Unit(self.value + other, self.units)
	def __mul__(self, other):
		if isinstance(other, Unit):
			return Unit(self.value * other.value,
				"(%s)%s" % (self.units, other.units))
		else:
			return Unit(self.value * other, self.units)
	def __div__(self, other):
		if isinstance(other, Unit):
			return Unit(self.value / other.value,
				"%s/%s" % (self.units, other.units))
		else:
			return Unit(self.value / other, self.units)
	def __radd__(self, other): return self.__add__(other)
	def __rsub__(self, other): return self.__sub__(other)
	def __rmul__(self, other): return self.__mul__(other)
	def __rdiv__(self, other): return self.__div__(other)
	def __repr__(self):
		return '%i %s' % (self.value, self.units)
	def __str__(self): return repr(self)
############################################################

which allows you to do things like

distance = Unit(80, 'm')
print "Distance: %s" % distance
time = Unit(2, 'h')
print "Time: %s" % time
speed = distance/time
print "Speed: %s" % speed
speed = 3 * speed
print "Speed: %s" % speed
print "Error:",
# can't add dissimilar units
print distance + time



I'm sure there are loads of other edge cases one would want to 
consider, such as analyzing and trimming redundant units, but 
that should give a pretaste of what could be done.

-tkc





From pedro.lima at gmail.com  Wed Sep 20 11:26:37 2006
From: pedro.lima at gmail.com (Pedro Lima)
Date: 20 Sep 2006 08:26:37 -0700
Subject: Interested in a Python User Group in Porto/Portugal?
Message-ID: <1158765997.924632.166160@m7g2000cwm.googlegroups.com>

There is now a list to help put together such a group:
http://groups.google.com/group/python-porto

Regards,
Pedro Lima

PS. please forward this message to people you think that could be
interested.



From tjaybowles at yahoo.com  Tue Sep  5 14:30:52 2006
From: tjaybowles at yahoo.com (tjaybowles at yahoo.com)
Date: 5 Sep 2006 11:30:52 -0700
Subject: Off topic
Message-ID: <1157481051.998555.62190@i3g2000cwc.googlegroups.com>

-	Make Up to $50K -
This was my ad a month ago.  I didn't make $50k, but I made $14,565,
that's $14,555, more than I invested into this little game.  I
can't believe it.  I'm still running the ads and sending emails so
maybe next month I will make $50,000.  This is so much fun!!! My wife
thought I was unrealistic a month ago.  I was a little bit, but $14,565
is still o.k., and she likes it.
________________________________________
Reply to: job-198722533 at craigslist.org
Date: 2006-08-25, 9:17AM PDT


+++ EASILY MAKE AS MUCH AS $50K!!! +++
This program is truly simple and successful, just give it a shot.


You may have heard of this program (or one similar to it) on Oprah,
20/20 or even in The Wall Street Journal. Quick and simple, $10 is all
it takes. The program is an easy step-by-step process that takes
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This program may take between 15-45 minutes of your time, but it is
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To get started just copy this whole page to paste and edit it. Simply
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of $50,000 dollars in your Paypal account or potentially even more!
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make this system work.


Program Steps

Most everyone has heard of PayPal. Anyone with an e-mail address can
join for free. If you are not already a PayPal user the first thing you
need to do is sign up. Sign up for PayPal at www.paypal.com ... It's
very easy to set up and it's free. Just make sure you sign up for (or
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monthly income limitation which can slow the program down.

Step 1:

Send $5 to the first person on the list by using the PayPal "Send
Money" feature, choose service or quasi-cash and include in the e-mail
subject line and note PLEASE ADD ME TO YOUR LIST ... This keeps the
program safe, secure and legal. Then send another $5 to the 5th person
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YOU, I'VE JOINED .


Step 2:

Delete the first e-mail address in the list and place your e-mail
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2. plshark415 at yahoo.com
3. skee314 at yahoo.com
4. mirabi2000 at yahoo.com
5. tjaybowles at yahoo.com

(Make sure you use the same e-mail address that you used to open your
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Step 3:

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an e-mail, a note and placed your e-mail address in the 5th place, then
what you need to do is post your letter. You can post on
www.craigslist.org, www.backpage.com, message boards and newsgroups
(there are thousands), classifieds and you can even send an e-mail to
your e-mail list.

Step 4:

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ENSURE THERE ARE AT LEAST 20 "THANK YOU, IVE JOINED" replies.

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1st on the list as upwards of 8000 to 15,000 people will send you $5
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(As the old proverb goes: "What goes around comes around!")

_______________________________________________________________________________



Testimonials

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first I thought there was some type of error in my account!!!


Here are the directions again:

Step 1:

If you don't already have one, set up your Paypal account
(www.paypal.com) and send the top name (1st person) $5 dollars via the
Send Money feature. DO NOT FORGET to include PLEASE ADD ME TO YOUR LIST
in the subject line as this is important to keep the program safe,
secure and legal!!!

Step 2:

Send another $5 dollars via Paypal and an e-mail stating THANK YOU,
I'VE JOINED to the 5th name on the list.

Step 3:

Remove the top name and bump the other 4 names up one place each. Place
your name in the bottom slot and you will receive a minimum of $100.00
or more for your efforts.

Step 4:

Keep sending/posting the letter until you get 20 THANK YOU, I'VE JOINED
replies in your mailbox.

That's it. It's that simple!


Please give this program an honest effort. You will not be disappointed
and will be very glad you participated when it begins to work.
Remember, your only out of pocket expense is about the cost of two
coffees and a donut with the opportunity of banking thousands of
dollars into your PayPal account!

Take the smallest risk of your life on this small project and reap the
rewards today and tomorrow!

- THE CHOICES YOU MAKE TODAY WILL AFFECT THE LIFE YOU LEAD TOMORROW -


_______________________________________________________________________________



From ty.2006 at yahoo.com  Fri Sep 22 14:51:01 2006
From: ty.2006 at yahoo.com (T)
Date: 22 Sep 2006 11:51:01 -0700
Subject: License / Registration key enabled software
Message-ID: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>

We all know that there are many softwares that require some license key
or registration key to enable them.  How does one implement something
like this in python?



From johnzenger at gmail.com  Tue Sep 26 16:30:16 2006
From: johnzenger at gmail.com (johnzenger at gmail.com)
Date: 26 Sep 2006 13:30:16 -0700
Subject: Reading a file using a UNC - help!
References: <1159301192.615441.256710@i3g2000cwc.googlegroups.com>
Message-ID: <1159302616.772343.74600@i3g2000cwc.googlegroups.com>

You should use os.path.exists to test if a file exists.  Your
exception-catching structure is not necessary.

Also, if the file you are reading from contains proper Windows
filenames, it is not necessary to replace \ with \\ and so forth.  The
\ acts as an escape character only when it is in Python source code,
not when it is in a string read from the real world.

Also, because you wisely use "for x in inputfiles:" it is not necessary
to search for and replace newlines.

richard.kessler at matteicos.com wrote:
> I have the simplest need...to read a file full of file names(unc) and
> then check to see if each of these files exists.  I tried with the
> following program, but always get file not found, even when it is
> there. If I type in the file name as a literal it works...
>
> Little program:
>
> #This module checks for file existence
> import string
> import sys
>
> def MainProcess():
>
>     fileList = "c:\a_list_of_filenames.txt"
>     inputFiles = open(fileList,"r")
>
>     cnt = 0
>     cntNotFound = 0
>
>     for x in inputFiles:
>         cnt = cnt + 1
>         try:
>             x = x.replace("\\","\\\\")
>             x = x.replace("\n","")
>             open(x,"rb")
>             #open('\\\\myserver\\myshare\\myfile.dat',"r")  #works when
> hard coded like this
>         except IOError, (errno, strerror):
>             print "I/O error(%s): %s" % (errno, strerror)
>             cntNotFound = cntNotFound + 1
>             print x + " Not Found"
>         except ValueError, (errno,strerror):
>             print "Some other error! " + str(errno) + " " + strerror
>         else:
>             print "Found " + x
>
>     print str(cnt) + " total..."
>     print str(cntNotFound) + " not found..."
>
> if __name__ == '__main__':
>     MainProcess()
>
> Many thanks to anyone in advance to can tell me what I am doing wrong!
> Platform is XP with PythonWin.
> 
> Richard Kessler
> richard.kessler at matteicos.com



From torerik81 at gmail.com  Sun Sep  3 07:52:04 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Sun, 03 Sep 2006 13:52:04 +0200
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <mailman.10304.1157280160.27775.python-list@python.org>
References: <edcrms$auj$1@news.uit.no>
	<mailman.10304.1157280160.27775.python-list@python.org>
Message-ID: <edefl6$10dc$1@news.uit.no>

Fredrik Lundh wrote:
> Tor Erik wrote:
> 
>> The reason is that my application does about 16 connects and data 
>> transfers per second, to the same 16 remote hosts. After approx 200 
>> secs there are 4000 sockets waiting to be garbage collected by the OS.
> 
> what does "netstat" say about these sockets ?
> 
> </F>
> 

They are in the TIME_WAIT state... The msn library has an article on how 
to solve this:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/BTS06CoreDocs/html/6987640c-1d80-4fbf-b43a-021fc8ba06a4.asp

Summing up one could either:

1. Increase the upper range of ephemeral ports that are dynamically 
allocated to client TCP/IP socket connections:

set registry key: 
KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\MaxUserPort
to a new DWORD value... (5000 - 65534)
The default in XP is 3976 -> http://support.microsoft.com/kb/Q149532

or

2. Reduce the client TCP/IP socket connection timeout value from the 
default value of 240 seconds

set registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\TcpTimedWaitDelay
to a new DWORD value (30 - 300)

The TCP RFC (RFC 793) recommends a value of 2*msl(Maximum Segment 
Lifetime). The general consensus about the value of msn seems to be 1-2 
minutes, depending on the underlying network... (2*2 min = 2*120 sec = 
240 sec)


I do not want to alter my registry, so I'm currently testing an idea 
where I let the client connect and send its content, appended with my 
own "magic" EOF byte-sequence. When the server receives this EOF, it 
takes care to close the connection. This should eliminate the problem as 
it is the peer closing the connection that enters the TIME_WAIT state...

I will report my experiences...


From onurb at xiludom.gro  Mon Sep 11 08:52:40 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 11 Sep 2006 14:52:40 +0200
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157667594.051943.265040@d34g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
Message-ID: <45055c19$0$22489$626a54ce@news.free.fr>

mensanator at aol.com wrote:
> Bruno Desthuilliers wrote:
>> mensanator at aol.com wrote:
>>> Probably just me. I've only been using Access and SQL Server
>>> for 12 years, so I'm sure my opinions don't count for anything.
>>>
>> SQLite never pretended to be a full-blown RDBMS - just a lightweight
>> simple embedded database as SQL-compliant as possible.
> 
> Ah, *you* haven't read the documentation either!

I use SQLite and PgSQL (and, alas, MySQL) on a daily basis. So I've *of
course* read the doc (and frequently re-read it).

> "as SQL-compliant as possible"?

Yes. And yes, I know about the typing issue. If you want to make sure
you can migrate your data to a real RDBMS, then it's up to you to take
appropriate precautions (FormEncode can be a real helper here...).

This (documented enough) issue apart, we have far less troubles with
SQLite than we have with MySQL, on both the dev and admin sides.

And FWIW, insulting peoples won't buy you much.

(snip useless rant again)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From ptmcg at austin.rr._bogus_.com  Sat Sep 23 23:35:33 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Sun, 24 Sep 2006 03:35:33 GMT
Subject: What is the best way to "get" a web page?
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
Message-ID: <92nRg.4760$nX4.2074@tornado.texas.rr.com>

"Pete" <harbingerofpeace at post.com> wrote in message 
news:1159068122.933629.128440 at i3g2000cwc.googlegroups.com...
>I have the following code:
>
>>>> web_page = urllib.urlopen("http://www.python.org")
>>>> file = open("temp.html", "w")
>>>> web_page_contents = web_page.read()
>>>> file.write(web_page_contents)
>>>> file.close
> <built-in method close of file object at 0xb7cc76e0>
>>>>
>
> The file "temp.html" is created, but it doesn't look like the page at
> www.python.org. I'm guessing there are multiple frames and my code did
> not get everything. Can anyone point me to a tutorial or other
> reference on how to "get" all of the html contents at a particular
> page?
>
> Why did Python print the line after "file.close"?
>
> Thanks,
> Pete
>

A. You didn't actually invoke the close method, you simply referenced it, 
which is why you got the output line after file.close.  Python is not VB. 
To call close, you have to follow it with ()'s, as in:

file.close()

This will have the added benefit of flushing the output to temp.html, 
probably containing the missing content you were looking for.

B. Don't name variables "file", or "list", "str", "dict", "int", etc.  Doing 
so masks global names of builtin data types.  Try "tempFile" instead.

-- Paul




From fredrik at pythonware.com  Thu Sep 14 03:24:45 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 09:24:45 +0200
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <2C6Og.1076$UG4.672@newsread2.news.pas.earthlink.net>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>	<mailman.45.1158171218.10491.python-list@python.org>	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>
	<2C6Og.1076$UG4.672@newsread2.news.pas.earthlink.net>
Message-ID: <eeb03u$g0i$1@sea.gmane.org>

Dennis Lee Bieber wrote:

> 	References to lists, dictionaries, and class instances (which are,
> in a way, just an expanded dictionary) are "mutable"

careful: it's not the *reference* that's mutable, it's the object.

the *only* difference between mutable and immutable objects is that
the latter don't provide any methods that you could use to modify their 
contents.

plain assignment (name=) *never* modifies objects, and *never* copies 
objects.

this article

     http://effbot.org/zone/python-objects.htm

may be useful for those who haven't already seen it.

</F>



From jstroud at mbi.ucla.edu  Fri Sep 29 20:24:06 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 30 Sep 2006 00:24:06 GMT
Subject: DAT file compilation
In-Reply-To: <1159574758.612198.141410@i3g2000cwc.googlegroups.com>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
	<4o5qhvFd1bddU1@uni-berlin.de>
	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>
Message-ID: <GOiTg.311$NE6.235@newssvr11.news.prodigy.com>

Jay wrote:
> That's one solution, but I'd rather a file format the end-user can't
> easily mess around with.

Require the program to be installed as root and installation to be in a 
read-only directory--or serve the resources to your program from a cgi 
script somewhere, only to be downloaded when needed. This way, the user 
would at least have to reverse engineer your program to see where the 
resources were coming from so they could plug the appropriate query in 
their web browser.

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From sjmachin at lexicon.net  Fri Sep 22 18:34:10 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 15:34:10 -0700
Subject: String Pattern Matching: regex and Python regex documentation
In-Reply-To: <kAYQg.4478$nX4.3674@tornado.texas.rr.com>
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
	<mailman.476.1158952713.10491.python-list@python.org>
	<kAYQg.4478$nX4.3674@tornado.texas.rr.com>
Message-ID: <1158964449.920814.37950@d34g2000cwd.googlegroups.com>


Paul McGuire wrote:
> "Steve Holden" <steve at holdenweb.com> wrote in message
> news:mailman.476.1158952713.10491.python-list at python.org...
> <snip>
> >
> > Ilias Lazardis meets Xah Lee. I just *know* we're in for trouble now ...
> >
> > regards
> >  Steve
>
> A sign of the End Times, perhaps?
> 

Indeed.  Armageddon outa here ;-)



From grante at visi.com  Sat Sep  2 09:59:19 2006
From: grante at visi.com (Grant Edwards)
Date: Sat, 02 Sep 2006 13:59:19 -0000
Subject: how to remove n bytes in a file?
References: <mailman.10285.1157203329.27775.python-list@python.org>
Message-ID: <12fj3hnmreevh46@corp.supernews.com>

On 2006-09-02, Dasn <dasn at bluebottle.com> wrote:
> Hi.
> Suppose we have a very large file, and wanna remove 'n' bytes in the
> middle of the file. My thought is:
> 1, read() until we reach the bytes should be removed, and mark the
> position as 'pos'.
> 2, seek(tell() + n) bytes
> 3, read() until we reach the end of the file, into a variable, say 'a'
> 4, seek(pos) back to 'pos'
> 5, write(a)
> 6, truncate()
>
> If the file is really large, the performance may be a problem.
> Is there a clever way to finish? Could mmap() help? Thx

Instead of reading till the end of the file in step 3, do it a
chunk at a time in a loop.

-- 
Grant Edwards                   grante             Yow!  I'm gliding over a
                                  at               NUCLEAR WASTE DUMP near
                               visi.com            ATLANTA, Georgia!!


From http  Wed Sep 13 22:00:21 2006
From: http (Paul Rubin)
Date: 13 Sep 2006 19:00:21 -0700
Subject: threads and return values
References: <mailman.52.1158196087.10491.python-list@python.org>
	<7xmz932p7h.fsf@ruckus.brouhaha.com>
Message-ID: <7x7j07tdfu.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
>     import Queue
>     q = Queue()

Oops, meant 

      q = Queue.Queue()


From p.lavarre at ieee.org  Sat Sep 23 17:34:59 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 23 Sep 2006 14:34:59 -0700
Subject: Reverse a String?
In-Reply-To: <4515a15f$0$19913$4d3efbfe@news.sover.net>
References: <mailman.505.1159045338.10491.python-list@python.org>
	<4515a15f$0$19913$4d3efbfe@news.sover.net>
Message-ID: <1159047299.209370.261420@b28g2000cwb.googlegroups.com>

That 'foo'[::-1] is the Python reverse string idiom I'll try here
forward, thanks.

Also '.h.e.l.l.o'[1::2] to pick out every second char, etc., thanks.

Three footnotes:

1) Reverse string isn't yet in http://www.python.org/doc/faq/

2) Google Groups searches here yesterday instead pushed me towards the
less concise:

	def reverse(chars):
		aa = array.array('c', chars)
		aa.reverse()
		return aa.tostring()

3) I went looking when first I found time to rethink what I had been
running this past year:

	def reverse(chars):
		ochars = ''
		beyond = len(chars)
		for ix in range(beyond):
			ochars += chars[beyond - 1 - ix]
		return ochars



From btowle at carnegielearning.com  Thu Sep 28 09:23:48 2006
From: btowle at carnegielearning.com (Brendon Towle)
Date: Thu, 28 Sep 2006 09:23:48 -0400
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.1984.1159445104.10490.python-list@python.org>
References: <mailman.1984.1159445104.10490.python-list@python.org>
Message-ID: <D51A8342-FC02-4D3A-862B-6A38640DA49E@carnegielearning.com>

On 28 Sep 2006, at 8:05 AM, python-list-request at python.org wrote:

> From: Bruno Desthuilliers <onurb at xiludom.gro>
> Subject: Re: Questions on Using Python to Teach Data Structures and
> 	Algorithms
> To: python-list at python.org
>
> Brendon Towle wrote:
>> Some of your Lisp translations are subtly off...
>
> Seems correct to me. Lisp lists are linked lists, not arrays.
>
>>
>>> Date: 28 Sep 2006 02:49:50 -0700
>>> From: "sturlamolden" <sturlamolden at yahoo.no>
>>> Subject: Re: Questions on Using Python to Teach Data Structures and
>>>     Algorithms
>>> To: python-list at python.org
>>>
>>> If you want to make a chained structure, then perhaps you know LISP?
>>> This is what the basic machinery of LISP looks like in Python:
>>>
>>> def cons(a,b)
>>>    return [a,b]
>>
>> should be:
>>     return [a].extend(b)
>
> A Lisp cons is made of a reference to it's content and a reference to
> the rest of the list, so cons = lambda a, b : [a, b] seems the most
> straightforward translation.

Yes, a lisp cons is a pair of references as you describe. However,  
the following lisp call:

? (cons <item> <list>)

returns a single level list, with <item> as its new first item, and  
the original contents of <list> as the remainder of the list. The  
OP's code doesn't do that; it returns a list of two items, with  
<list> as the second item.

To put it another way, the following code is always true in Lisp:

? (= (length (cons <item> <list>)) (1+ (length <list>)))

But the OP's code only allows that to be true when <list> is of  
length 1.


I suppose, of course, that you could claim that the following Lisp list:

   (1 2 3 4)

should translate into the following Python list:

   [1, [2, [3, [4]]]]

But, I think that's a bit silly.


>>> def car(structure)
>>>    return structure[0]
>>>
>>> def cdr(structure)
>>>    return structure[1]
>>
>> should be:
>>     return structure[1:]
>
> idem.

I should have pointed out, of course, that the original definition of  
CDR was correct given the original (incorrect) definition of cons.

B.

-- 
Brendon Towle, PhD
Cognitive Scientist
+1-412-690-2442x127
Carnegie Learning, Inc.
The Cognitive Tutor Company ?
Helping over 375,000 students in 1000 school districts succeed in math.




From tim at tdw.net  Mon Sep  4 14:25:11 2006
From: tim at tdw.net (Tim Williams)
Date: Mon, 4 Sep 2006 19:25:11 +0100
Subject: Test for number?
In-Reply-To: <G51489767.912.3617.1@mx-extra>
References: <G51489767.912.3617.1@mx-extra>
Message-ID: <9afea2ac0609041125m5660f690r2542de9a0c40d6e7@mail.gmail.com>

On 04/09/06, Dr. Pastor <elpX at adsihqx.com> wrote:
> In the following code I would like to ascertain
> that x has/is a number. What the simplest TEST should be?
> (Could not find good example yet.)
> ---
> x=raw_input('\nType a number from 1 to 20')
> if TEST :
>                 Do_A
> else:
>                 Do_B
> ---

Something simple like the following might help,

>>> def numtest():
... 	x=raw_input('\nType a number from 1 to 20')
... 	try:
... 		x=int(x)
... 		print x, "is a number between 1 & 20 "
... 	except:
... 		print x, "is not a number"
...
>>> numtest()   # enter 1
1 is a number between 1 & 20
>>> numtest()  #  enter "f"
f is not a number

its not a final solution though,  think input = -2, 5.5  or 21

HTH :)


From akameswaran at gmail.com  Wed Sep 13 14:54:11 2006
From: akameswaran at gmail.com (akameswaran at gmail.com)
Date: 13 Sep 2006 11:54:11 -0700
Subject: how are dictionary literals handled by the interpreter?
Message-ID: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>

I wrote up a quick little set of tests, I was acutally comparing ways
of doing "case" behavior just to get some performance information.  Now
two of my test cases had almost identical results which was not at all
what I expected.  Ultimately I realized I don't really know how
literals are treated within the interpreter.

The two implementations I was looking at were:

class caseFunction(object):
    def __init__(self):
        self.caseDict = {'a':"retval = 'a'",
'b':"retval='b'","c":"retval='c'","d":"retval='d'",

"e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
                         "i":"retval='i'"}

    def doIt(self,a):
        exec(self.caseDict.get(a))
        return retval



def caseFunc3(a):
    exec(  {'a':"retval = 'a'",
'b':"retval='b'","c":"retval='c'","d":"retval='d'",

"e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
                         "i":"retval='i'"}.get(a))
    return retval


I had expected caseFunc3 to be slower.  I had thought the interpreter
would be recreating the dictionary each time, but that doesn't seem to
be the case since performance of the class version and the function
version are nearly identical on most runs.  If i rewrite caseFunc3 as:

def caseFunc4(a):
    exec(  dict({'a':"retval = 'a'",
'b':"retval='b'","c":"retval='c'","d":"retval='d'",

"e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
                         "i":"retval='i'"}).get(a))
    return retval

now with the explicit use of dict, i see the performace of the
functional version decline as I initially expected.

So what is happeneing in caseFunc3.  It seems as though the literal is
"cached".  The other hypothesis I came up with is the name lookup for
self.caseDict takes the same amount of time as creating the dictionary
literal - but that doesn't make sense to me.

Thanks



From onurb at xiludom.gro  Thu Sep 21 14:57:18 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 21 Sep 2006 20:57:18 +0200
Subject: Does WSGI offer anything for web *beginner*?
In-Reply-To: <1158860452.248979.227630@i3g2000cwc.googlegroups.com>
References: <1158860452.248979.227630@i3g2000cwc.googlegroups.com>
Message-ID: <4512e08f$0$18126$626a54ce@news.free.fr>

seberino at spawar.navy.mil wrote:
> I love idea of WSGI and hope it succeeds.  It seems to be helpful for
> person
> tempted to write his own framework.....they can now just mix and match
> existing
> components with WSGI //instead//.

Well, it's not that much "instead" than "with a common building block".
As the name implies, the main goal of wsgi is to provide a commun,
unified interface to different HTTP server solutions... This is great
IMHO, but there's *much* more to a web framework than the interface with
the HTTP server.

> I not sure what WSGI offers the web beginner.  Aren't they still better
> off
> learning an existing web framework first before attacking WSGI?

Depends on your goals and the way your brain works... If all you want is
to have your app up and running ASAP, then yes, using an existing
framework is probably faster. But you'll still need to understand how
the whole damn HTTP thingie works - and probably unlearn much of what
you learned from rich GUI apps programming.

> I suppose ideally everyone would just learn WSGI and then never have
> to learn details of any //specific// framework. 

Once again : wsgi is the lower part of the system - how your app and the
webserver talk to each other. It is *not* a framework (just like
mod_python or the cgi module are not frameworks). A web framework is
supposed to at least handle url-to-code dispatch, help generating HTML
(templating), and hide away all the gory details of HTTP response
headers. And most also offer a data access layer over a RDBMS or an OODBMS.

IOW, wsgi will not saves you from learning to use a specific web
framework. Nor will it saves you from learning *at least* the HTTP
protocol, and most probably html, css, Javascript etc.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From elpX at adsihqX.com  Sun Sep  3 20:38:13 2006
From: elpX at adsihqX.com (Dr. Pastor)
Date: Sun, 03 Sep 2006 17:38:13 -0700
Subject: Exception EOFError.
Message-ID: <1157329590_32385@sp6iad.superfeed.net>

Python 2.5b3 on Windows XP.

(exception EOFError
Raised when one of the built-in functions (input() or
raw_input()) hits an end-of-file condition (EOF) without reading any data.)

For me, raw_input (hit enter) returns an empty string!
(>>> x=raw_input()

 >>> x
''
 >>> )

Any confirmation?
Regards.

----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From python.list at tim.thechases.com  Tue Sep 12 16:14:52 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 12 Sep 2006 15:14:52 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee72uh$jca$1@sea.gmane.org>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>	<mailman.377.1158082452.5279.python-list@python.org>	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>	<mailman.384.1158087083.5279.python-list@python.org>	<1158089301.155482.151530@i42g2000cwa.googlegroups.com>
	<ee72uh$jca$1@sea.gmane.org>
Message-ID: <4507153C.9070401@tim.thechases.com>

> dynamic typing != random typing.  if your program is using the
> DB-API to add data to an SQLite database, who, exactly, is
> inserting the values? who's producing the data?  under what
> circumstances would that code produce or insert arbitrarily
> typed data?

Must be the code written by a Dr. Jekyll/Mr. Hyde personality...

"But honestly, boss, I didn't write this code!  It was my evil 
alter-ego that puts VARCHAR values containing Gilbert & Sullivan 
lyrics into the Amount_Due CURRENCY fields!"

:)

-tkc








From bborcic at gmail.com  Tue Sep 26 13:58:52 2006
From: bborcic at gmail.com (Boris Borcic)
Date: Tue, 26 Sep 2006 19:58:52 +0200
Subject: iterator question
In-Reply-To: <mailman.716.1159290541.10491.python-list@python.org>
References: <mailman.716.1159290541.10491.python-list@python.org>
Message-ID: <45196a94$1_3@news.bluewin.ch>

Neal Becker wrote:
> Any suggestions for transforming the sequence:
> 
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
> 
> into a succession of tuples:
> 
> [(1, 2), (3, 4)...]
> 
> In other words, given a seq and an integer that specifies the size of tuple
> to return, then for example:

 >>> trf = lambda iterable,n : zip(*[iter(iterable)]*n)
 >>> trf(range(15),3)
[(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 10, 11), (12, 13, 14)]


note though that it will silently drop any remainder.

hth, bb


From steve at holdenweb.com  Thu Sep 28 10:15:49 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 15:15:49 +0100
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <1159404316.140577.68700@b28g2000cwb.googlegroups.com>
References: <451b2c0b@news.bezeqint.net>
	<1159404316.140577.68700@b28g2000cwb.googlegroups.com>
Message-ID: <efgld3$sc3$1@sea.gmane.org>

bearophileHUGS at lycos.com wrote:
> efrat:
[...]
> 
>>then why was the name "list" chosen?
> 
> 
> I'd too love to know why the wrong "list" name was chosen for them,
> instead of "array". (Maybe because "list" is shorter, or because ABC
> called them "lists"...)
> 
I suspect it's because of their intrinsic one-dimensional nature.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From Maria.Reinhammar at accalon.com  Thu Sep 21 05:38:01 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 21 Sep 2006 02:38:01 -0700
Subject: Using py2exe to wrap a service?
In-Reply-To: <mailman.391.1158828620.10491.python-list@python.org>
References: <mailman.391.1158828620.10491.python-list@python.org>
Message-ID: <1158831481.628598.291660@d34g2000cwd.googlegroups.com>

Tim Golden wrote:
> [MaR]
>
> | I do not call pythoncom.CoInitialize ()  as I tend to expect a module
> | wrapping COM stuff to do that.
>
> Hmmm. A slightly philosophical point.
[snip]

:o) I agree!

I have added the CoInit.. call to the __init__() of the threaded class
(I understood the documentation as that was a proper place.)
The exception message changed!
Unfortunately I get little wiser.. (yes I confess.. I am spoonfed with
unix ;o)

The instance's SvcRun() method failed
  File "win32serviceutil.pyc", line 785, in SvcRun
  File "MailProxySvc.pyc", line 132, in SvcDoRun
  File "MailProxySvc.pyc", line 100, in setup
  File "D:\projects\MailProxy\AddressDB.py", line 54, in
loadPersonsFromAD
  File "active_directory.pyc", line 367, in search
  File "active_directory.pyc", line 217, in query
  File "win32com\client\gencache.pyc", line 540, in EnsureDispatch
  File "win32com\client\CLSIDToClass.pyc", line 50, in GetClass
exceptions.KeyError: '{B08400BD-F9D1-4D02-B856-71D5DBA123E9}'

//M



From fredrik at pythonware.com  Thu Sep 14 12:21:39 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 18:21:39 +0200
Subject: Outbound port on sockets
In-Reply-To: <1158249316.326019.119130@m73g2000cwd.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>	<1158239526.673977.312840@p79g2000cwp.googlegroups.com>	<mailman.90.1158240404.10491.python-list@python.org>	<1158241354.764008.214710@m73g2000cwd.googlegroups.com>	<4mtbjsF7kpeuU1@uni-berlin.de>
	<1158249316.326019.119130@m73g2000cwd.googlegroups.com>
Message-ID: <eebvik$3ac$1@sea.gmane.org>

bmearns wrote:

> All the same, it's a good suggestion. Thank you. Now do you know how I
> (as the server) can force clients to use PASV, instead of PORT?

have you tried returning a suitable error code ? (502 should be a good 
choice).

(and before you proceed, reading

      http://cr.yp.to/ftp/security.html

is also a good idea.  are you 110% sure that you absolutely definitely 
have to use FTP rather than HTTP/WebDAV or somesuch).

</F>



From ralmeida at gmail.com  Fri Sep 15 15:46:29 2006
From: ralmeida at gmail.com (Rob De Almeida)
Date: 15 Sep 2006 12:46:29 -0700
Subject: ancestor class' __init__ doesn't call other methods
In-Reply-To: <450af8d6$0$75041$14726298@news.sunsite.dk>
References: <450af8d6$0$75041$14726298@news.sunsite.dk>
Message-ID: <1158349589.103757.126760@b28g2000cwb.googlegroups.com>

Luis P. Mendes wrote:
> Method a() is not called.  Why is this?  What is the best option to
> solve this? Have Cotacoes returning values and not to be an ancestor
> class of CruzaEmas?

It works for me, after rearranging your code a little bit:


class Ema:
    pass

class Sistema:
    def __init__(self, par):
        cruza_ema = CruzaEmas(par)

class Cotacoes:
    def __init__(self, par):
        print "par: ", par
        self.a()
    def a(self):
        print "ffffffffffffff"

class CruzaEmas(Ema, Cotacoes):
    def __init__(self, par):
        Cotacoes.__init__(self, par)

s = Sistema("par")


--Rob



From mikael at isy.liu.se  Thu Sep 21 09:34:18 2006
From: mikael at isy.liu.se (Mikael Olofsson)
Date: Thu, 21 Sep 2006 15:34:18 +0200
Subject: Changing behaviour of namespaces - solved, I think
In-Reply-To: <eeu1ok$iru$02$1@news.t-online.com>
References: <mailman.404.1158839725.10491.python-list@python.org>
	<eeu1ok$iru$02$1@news.t-online.com>
Message-ID: <451294DA.5040608@isy.liu.se>

Peter Otten wrote:
> To feed an arbitrary mapping object to execfile() you need to upgrade to
> Python 2.4.

Thanks! As clear as possible. I will do that.

FYI: I think I managed to achieve what I want in Py2.3 using the 
compiler module:

    def getNamesFromAstNode(node,varSet):
        if node.__class__ in (compiler.ast.Global,compiler.ast.Import):
            varSet.union_update(node.names)
        if node.__class__ in (compiler.ast.Name,):
            varSet.add(node.name)
        for subNode in node.getChildNodes():
            getNamesFromAstNode(subNode,varSet)

    # Get all variable names that are referenced in the file:
    varSet = sets.Set()
    mainNode = compiler.parseFile(filePath)
    getNamesFromAstNode(mainNode,varSet)

    # Define a namespace and update it:
    ns = {}
    for varName in varSet:
        ns[varName] = dummyObject

    # Execute the file without NameErrors:
    execfile(filePath,ns)

Batteries included!

/MiO


From skip at pobox.com  Thu Sep 14 18:19:08 2006
From: skip at pobox.com (skip at pobox.com)
Date: Thu, 14 Sep 2006 17:19:08 -0500
Subject: How to convert a timedelta object to a string?
In-Reply-To: <JVjOg.1836$vD2.1096@tornado.texas.rr.com>
References: <mailman.104.1158267229.10491.python-list@python.org>
	<JVjOg.1836$vD2.1096@tornado.texas.rr.com>
Message-ID: <17673.54620.257910.561007@montanaro.dyndns.org>


    >>> startTime = datetime.timedelta(seconds=45,minutes=22,hours=10)
    >>> stopTime = datetime.timedelta(seconds=25,minutes=2,hours=4)
    >>> delta = startTime-stopTime
    >>> time.strftime("%H:%M:%S",time.gmtime(delta.seconds))
    '06:20:20'

Which, alas, will lose any subsecond resolution:

    >>> str(datetime.timedelta(seconds=0.1))
    '0:00:00.100000'

Skip


From sjmachin at lexicon.net  Fri Sep 22 10:29:37 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 07:29:37 -0700
Subject: anybody using python 2.5 that raises error while importing?
In-Reply-To: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>
References: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>
Message-ID: <1158935377.820149.242390@i42g2000cwa.googlegroups.com>


daniel wrote:
> there's a dll extension used to be imported with no error under version
> 2.4.3, but the new python complains that the name of the module can't
> be found. seems not mentioned in the official documentation, any work
> around to fix the issue without switching back to the old version?

Did/does its name end in .dll or in .pyd?
Have you procured a new one (necessary when there's a change of minor
version number) and installed it in the right place?
Can you tell us the name of the module, and the path to the DLL/PYD
that is/was imported by Python 2.4?
Have you contacted the author(s) of the module?
Have you installed Python 2.5 in its own directory e.g. c:\python25
(the default)? Python 2.4, same question? Have you uninstalled 2.4?

Regards,
John



From vagrantbrad at yahoo.com  Thu Sep 21 17:28:31 2006
From: vagrantbrad at yahoo.com (vagrantbrad at yahoo.com)
Date: 21 Sep 2006 14:28:31 -0700
Subject: Tkinter button not working as expected
Message-ID: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>

I've created a short test program that uses tkFileDialog.askdirectory
to help the user input a path into a tk entry widget.  The problem I'm
having is that when I run the code as listed below, the getPath
function is called when the program initially runs, not when the button
is pressed.

from Tkinter import *
import tkFileDialog

class App:

    def __init__(self, master):

        frame = Frame(master)
        frame.pack()

        t = StringVar()
        self.entry = Entry(frame, textvariable=t)
        self.entry.pack(side=LEFT)

        self.button = Button(frame, text="Select", fg="red")
        self.button["command"] = self.getPath(t)
        self.button.pack(side=LEFT)

    def getPath(self, t):
        dirPath = tkFileDialog.askdirectory(initialdir="c:\\")
        print dirPath
        t.set(dirPath)

root = Tk()
app = App(root)
root.mainloop()


The problem arises when I try to pass the t variable in the "command"
option of the button widget.  If I set the command to
"command=self.getpath" rather than "command=self.getpath(t)", then I
don't get this issue.  But I would like to be able to pass a variable
to the the function through the command option.  I'm a Tk newbie ....
what am I doing wrong?



From mathieu.malaterre at gmail.com  Sun Sep 10 23:36:44 2006
From: mathieu.malaterre at gmail.com (mathieu.malaterre at gmail.com)
Date: 10 Sep 2006 20:36:44 -0700
Subject: Simple regex with whitespaces
Message-ID: <1157945804.805624.32620@p79g2000cwp.googlegroups.com>

Hello,

  I cannot figure out a way to find a regular expression that would
match one and only one of these two strings:

s1 = '                              how are you'
s2 = '    hello world               how are you'

  All I could come up with was:
patt = re.compile('^[ ]*([A-Za-z]+)[  ]+([A-Za-z]+)$')

  Which of course does not work. I cannot express the fact: sentence
have 0 or 1 whitespace, separation of group have two or more
whitespaces.

Any suggestion ? Thanks a bunch !
Mathieu



From deets at nospam.web.de  Wed Sep 13 07:03:49 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 13 Sep 2006 13:03:49 +0200
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
	<4mq4h5F76akiU1@uni-berlin.de>
	<slrnegfoic.f0c.apardon@rcpc42.vub.ac.be>
Message-ID: <4mq6slF7ak7iU1@uni-berlin.de>

>> In general, that is true for the 21st century. But under certain
>> circumstances, one might be forced to use a vi over a limited b/w
>> terminal to fix that goddamn bug on the live system.
> 
> AFAIR, even those terminals had a form of highlighting. And personnaly
> I would think PEP 0263 would be potentially more annoying than this
> idea in those circumstances.

How so? Because some less important string literals  might be fucked up?
Certainly can that cause trouble, but having the trouble for each and every
keyword is a huge difference.

>> Even though you don't care about the pesky details, it boils down to
>> introducing an escape mechanism that will surround whatever identifiers
>> there are. Which looks crap in anything except and python-aware editor.
>>
>> But I bet you don't work with e.g. subversion to display diffs and the
>> like...
> 
> I wouldn't be surprised that looking at diffs from files that use
> PEP 0263 could look like crap too. Yes some decisions can cause
> some tools to be less usefull. I would say that the right cause
> of action is then to adapt those tools. Not to let something like
> that stop your decision.

The same reasoning as above applies. 

And sure you would say that - the day you admit to have suggested a stupid
thing won't be in my hopefully long-standing life span. 

Diez


From bjourne at gmail.com  Sat Sep 30 15:05:46 2006
From: bjourne at gmail.com (=?ISO-8859-1?Q?BJ=F6rn_Lindqvist?=)
Date: Sat, 30 Sep 2006 21:05:46 +0200
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <9AF*oH2rr@news.chiark.greenend.org.uk>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
Message-ID: <740c3aec0609301205l21318480s7717e8c3d9289564@mail.gmail.com>

> How do you transform this?
>
> height = 0
> for block in stack:
>    if block.is_marked():
>        print "Lowest marked block is at height", height
>        break
>    height += block.height
> else:
>    raise SomeError("No marked block")

def get_height_of_first_marked_bock(stack):
    height = 0
    for block in stack:
        if block.is_marked():
            return height
        height += block.height
    raise SomeError("No marked block")

height = get_height_of_first_marked_block(stack)
print "Lowest marked block is at height", height

Yes, this transformation is one line longer, but the control flow is
much easier to understand. In general, using the for/else clause mixes
the retrieval and the usage of the element. Consider this:

for item in list:
    if somecond(item):
        A) do something with item
        break
else:
    B) exceptional code when somecond() doesnt match anything in list

The code that you write in the positions A and B really are misplaced.
They arent part of the iteration of list. The two tasks, find item and
do something with item should be separated.

def find_item(list):
    for item in list:
        if somecond(item):
            return item
    return None # OR raise an exception

item = find_item(list)
if item:
    A) do something with item
else:
    B) exceptional code

This is, IMHO, much better style.

-- 
mvh Bj?rn


From MichaelDMcDonnell at yahoo.com  Thu Sep 14 01:40:23 2006
From: MichaelDMcDonnell at yahoo.com (Michael)
Date: 13 Sep 2006 22:40:23 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <1158210867.646388.319050@p79g2000cwp.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
Message-ID: <1158212423.601263.122640@p79g2000cwp.googlegroups.com>

John,

Thanks for your reply. Just wondering... how are Python strings
formatted? Evidently they're not 0 terminated.

Thanks again,
MDM

John Machin wrote:
> Michael top-posted [corrected]:
> > John Machin wrote:
> > > Michael wrote:
> > > > Hi All,
> > > >
> > > > I've received (via UDP) a null terminated string and need to convert it
> > > > into a Python string. Can anyone tell me how this is done? If it helps,
> > > > I know the number of characters in the string.
> > > >
> > >
> > > I think you mean NUL, not null.
> > >
> > > What have you received it into, if it's not a Python string?
> > >
> > > You probably need/want this:
> > >
> > > if strg[-1] == "\0":
> > >     strg = strg[:-1]
> > > alternatively:
> > > strg = strg.rstrip("\0") # requires Python 2.2.2 or later
> > >
> > > It's possible you may be talking about a fixed length string which
> > > contains useful_stuff + "\0" + padding -- in that case you need
> > >
> > > strg = strg.split("\0")[0] # grab upto (but not including) the first
> > > NUL (if any)
> > >
> > > If you're not sure what you've got, print repr(the_input_string)
> > >
> > > HTH,
> > > John
> > Thank you very much for your responses. To answer some of the
> > questions... Yes, I am in Python receiving a C language 0 terminated
> > string that was sent to my Python program in a UDP packet (which is how
> > I know the count). Are your responses still correct given this
> > clarification?
>
> My responses are correct. Your "clarification" indicates to me that you
> are going by what you are told, not by inspection of (several instances
> of) the packet contents, using repr(). It's up to you whether you want
> to be skeptical about the packet contents or not. I certainly wouldn't
> be throwing the last byte away without checking that it was in fact a
> NUL. 
> 
> Cheers,
> John



From jordan.taylor2 at gmail.com  Fri Sep 29 15:05:42 2006
From: jordan.taylor2 at gmail.com (Jordan)
Date: 29 Sep 2006 12:05:42 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159471108.337439.147440@m73g2000cwd.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<451BD332.1080505@websafe.com>
	<1159471108.337439.147440@m73g2000cwd.googlegroups.com>
Message-ID: <1159556742.389089.93370@i3g2000cwc.googlegroups.com>

If your using python 2.4.3 or essentially any of the 2.3, 2.4 series,
i'd test out PyScripter as an IDE, it's one of the best that I've used.
 Unfortunately, they have yet to fully accomedate 2.5 code (you can
still write 2.5 code with almost no problems, but you won't be able to
use a 2.5 interactive interpeter).

Good Luck
Jordan

Damian wrote:
> Sorry about the multiple posts folks. I suspect it was the "FasterFox"
> FireFox extension I installed yesterday tricking me.
>
> I had a brief look at libxml(?) on my Ubuntu machine but haven't run it
> on the server.
>
> I'll look into pyrxp Larry.
>
> I have to say I'm struggling a little with the discoverability and
> documentation side of things with Python. I realise that
> discoverability is purported to be one of its strong sides but coming
> from the Visual Studio IDE where Intellisense looks after everything as
> you are typing and you can see exactly what methods are available to
> what class and what variables are required and why what I've seen so
> far is not that flash.
>
> I've installed Eclipse with Pydev (very impressive) on my Linux box and
> am using IDLE on Windows and it could just be my lack of familiarity
> that is letting me down. Any other IDE recommendations?
>
> I'd be keen to test pyrxp and libxslt but may need help with the code -
> I spent literally hours yesterday trying to make a 20-line bit of code
> work. To make things worse I started with 4suite in Ubuntu and it
> refused to work with an error about not being able to find default.cat
> or something. Googled for hours with no luck.
>
> That said, I really want to make the switch and so far Python looks to
> be the best choice.
> 
> Cheers
> Damian



From uid09012_ti at martin-collins.de  Thu Sep  7 11:48:54 2006
From: uid09012_ti at martin-collins.de (Francach)
Date: 7 Sep 2006 08:48:54 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
Message-ID: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>

Hi,

I'm trying to use the Beautiful Soup package to parse through the
"bookmarks.html" file which Firefox exports all your bookmarks into.
I've been struggling with the documentation trying to figure out how to
extract all the urls. Has anybody got a couple of longer examples using
Beautiful Soup I could play around with?

Thanks,
Martin.



From simon at brunningonline.net  Wed Sep 27 05:14:54 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Wed, 27 Sep 2006 10:14:54 +0100
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159303404.797267.86390@m7g2000cwm.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.693.1159282619.10491.python-list@python.org>
	<1159303404.797267.86390@m7g2000cwm.googlegroups.com>
Message-ID: <8c7f10c60609270214t2b86cf79w17853f3e955bc1a@mail.gmail.com>

On 26 Sep 2006 13:43:24 -0700, Fuzzyman <fuzzyman at gmail.com> wrote:
> Simon Brunning is a Pythonista in his spare time but uses
> Java at work. He has got Jython fairly deeply embedded though.

Sure do. We also use Python for a lot of internal tools, the most
complex probably being a fairly extensive code generator. (If you
think you need to generate Python, you are almost certainly taking the
wrong approach, but Java is repetitive, static, verbose and just plain
hideous enough that code generation can be a good solution.)

-- 
Cheers,
Simon B,
simon at brunningonline.net


From tal.no.no.spam at gmail.com  Wed Sep  6 15:21:30 2006
From: tal.no.no.spam at gmail.com (Tal Einat)
Date: 6 Sep 2006 12:21:30 -0700
Subject: Script Bug?
In-Reply-To: <1157569114.714681.94320@i3g2000cwc.googlegroups.com>
References: <1157565072.272846.18240@m79g2000cwm.googlegroups.com>
	<mailman.89.1157568405.5279.python-list@python.org>
	<1157569114.714681.94320@i3g2000cwc.googlegroups.com>
Message-ID: <1157570490.410353.254640@e3g2000cwe.googlegroups.com>


Omar wrote:
> no, i put those there.
>
> i have restarted IDLE and it now works.  a friend told me it was a bug
> in IDLE.
>
> I'd like to try activepython, but i can't dl it from work (that site is
> blocked for some reason).  anybody got the install for it, or a mirror
> location for it?

You can use PythonWin instead, which is good enough.

Still, I have been using IDLE for years and have never run into this,
nor heard of such a bug from anyone else. Do you know how to recreate
it?

- Tal
reduce(lambda m,x:[m[i]+s[-1] for i,s in enumerate(sorted(m))],
       [[chr(154-ord(c)) for c in '.&-&,l.Z95193+179-']]*18)[3]



From fanglicheng at gmail.com  Mon Sep 11 23:04:58 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 11 Sep 2006 20:04:58 -0700
Subject: How to get the "longest possible" match with Python's RE module?
Message-ID: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>

Basically, the problem is this:

>>> p = re.compile("do|dolittle")
>>> p.match("dolittle").group()
'do'

Python's NFA regexp engine trys only the first option, and happily
rests on that. There's another example:

>>> p = re.compile("one(self)?(selfsufficient)?")
>>> p.match("oneselfsufficient").group()
'oneself'

The Python regular expression engine doesn't exaust all the
possibilities, but in my application I hope to get the longest possible
match, starting from a given point.

Is there a way to do this in Python?



From bumtool at gmail.com  Mon Sep  4 08:20:42 2006
From: bumtool at gmail.com (kilnhead)
Date: 4 Sep 2006 05:20:42 -0700
Subject: modbus
Message-ID: <1157372442.245274.57090@b28g2000cwb.googlegroups.com>

Is anyone using python for modbus? I would like to communicate with
some
modbus devices - I can use pyserial and follw the protocol, just
wondering
if anybody has already done this?



From bearophileHUGS at lycos.com  Tue Sep 26 10:08:00 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 26 Sep 2006 07:08:00 -0700
Subject: Ordered dicts
In-Reply-To: <Xns984A91006BF71duncanbooth@127.0.0.1>
References: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
	<Xns984A91006BF71duncanbooth@127.0.0.1>
Message-ID: <1159279680.109741.30330@b28g2000cwb.googlegroups.com>

Thank to Neil Cerutti and Duncan Booth for the answers. I have not
tried that C AVL implementation yet.

Duncan Booth:

> but for your ordered dictionary if you did that you would have
> to fix up the linked list.

To fix the list in constant time you probably need a doubly-linked
list, this requires more memory (or the bad xor trick) and more code
complexity.


> Then if you reinsert the deleted value it goes back in at its original order.

Uhm, this doesn't sound good. Thank you, I missed this detail :-)
Then the doubly-linked list, and the links fixing seem necessary...

Bear hugs,
bearophile



From gagsl-cvsnt at yahoo.com.ar  Thu Sep 14 15:52:07 2006
From: gagsl-cvsnt at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 14 Sep 2006 16:52:07 -0300
Subject: How do I converted a null (0) terminated string to a
	Python string?
In-Reply-To: <1158245135.725733.21920@k70g2000cwa.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060914165106.040ec048@yahoo.com.ar>

At Thursday 14/9/2006 11:45, Michael wrote:

>Since I'm new to Python, I'm having trouble understanding what this
>means (see below). Would appreciate any help.
>
>if strg[-1] == "\0":
>     strg = strg[:-1]

The Python Tutorial will answer your questions, it is enlightning and 
easy to follow.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From scott.daniels at acm.org  Fri Sep 29 17:38:05 2006
From: scott.daniels at acm.org (Scott David Daniels)
Date: Fri, 29 Sep 2006 14:38:05 -0700
Subject: Automatic methods in new-style classes
In-Reply-To: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
References: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
Message-ID: <451d8a70$1@nntp0.pdx.net>

bertgoos at yahoo.com wrote:
> Hey, I want to send commands to a list of backends:

How about something like:


class Forwards(object):

     to_forward = set(['flush', 'read', 'write', 'close'])

     def __init__(self, backends):
         self.backends = backends

     def forwarder(self, methodname):
         def method(*args, **kwargs):
             for b in self.backends:
                 getattr(b, methodname)(*args, **kwargs)
         return forwarder

     def __getattr__(self, name):
         if name in self.to_forward:
             return self.forwarder(name)
         raise AttributeError("%r object has no attribute %r"
                              % (self.__class__.__name__, name))

--Scott David Daniels
scott.daniels at acm.org


From gregpinero at gmail.com  Sat Sep 23 18:51:28 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Sat, 23 Sep 2006 18:51:28 -0400
Subject: Reverse a String?
In-Reply-To: <ef4b54$449$1@sea.gmane.org>
References: <312cfe2b0609231402y4241d7cep36f1a4a73a82ead8@mail.gmail.com>
	<ef47ge$qvb$1@sea.gmane.org>
	<312cfe2b0609231454l2678aa96ifb0e59611295d973@mail.gmail.com>
	<ef4b54$449$1@sea.gmane.org>
Message-ID: <312cfe2b0609231551w586dd824q9e66aaa40f774337@mail.gmail.com>

Thanks guys, and now the world knows:
http://www.answermysearches.com/index.php/super-easy-way-to-reverse-a-string-in-python/188/

Well my 3 blog readers or the world ... not sure.

-Greg


From maric at aristote.info  Mon Sep  4 07:53:23 2006
From: maric at aristote.info (Maric Michaud)
Date: Mon, 4 Sep 2006 13:53:23 +0200
Subject: What are super()'s semantics?
In-Reply-To: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
Message-ID: <200609041353.24630.maric@aristote.info>

Le lundi 04 septembre 2006 12:25, Mike Krell a ?crit?:
> 1. The super() call in D somehow invokes both parent class methods
> ? ?instead of stopping when the method is resolved in B. This has
> ? ?nothing to do with truncated lookup per se. ?Why isn't the output "D
> ? ?B A"?
>

Yes but, super(B, B()) and super(B,D()) are not the same object like the code 
below shows.

> 2. If I understand correctly, B's MRO is (B, A) and super(B, self) would
> ? ?have an MRO of (A). ?Similarly for C. ?So it seems that by the above
> ? ?explanation, A.met() would still be invoked twice (assuming both
> ? ?B.met() and C.met() are invoked).

super(class_, self), is an instance of super, so its class, "super", have a 
mro of [<type 'super'>, <type 'object'>]....
"self" in each method call is the same and indeed its type's mro doesn't 
change !


-- In [80]: class A(object) :
   ....:     def sup(self) :
   ....:         print 'A'
   ....:
   ....:

In [81]: class B(A) :
   ....:     def sup(self) :
   ....:         print 'B'
   ....:         s(B, self).sup()
   ....:
   ....:

In [82]: class C(A) :
   ....:     def sup(self) :
   ....:         print 'C'
   ....:         s(C, self).sup()
   ....:
   ....:

In [83]: class D(B,C) :
   ....:     def sup(self) :
   ....:         print 'D'
   ....:         s(D, self).sup()
   ....:
   ....:

In [97]: class s(super) :
   ....:     def __new__(*a) :
   ....:         print a
   ....:         return super.__new__(*a)
   ....:
   ....:

In [98]: D().sup()
D
(<class '__main__.s'>, <class '__main__.D'>, <__main__.D object at 
0xa763186c>)
B
(<class '__main__.s'>, <class '__main__.B'>, <__main__.D object at 
0xa763186c>)               <--- instance is always the same !!
C
(<class '__main__.s'>, <class '__main__.C'>, <__main__.D object at 
0xa763186c>)               <--- instance is always the same !!
A

In [100]: super(B, D()).sup()
C
(<class '__main__.s'>, <class '__main__.C'>, <__main__.D object at 
0xa763178c>)
A

This shows that C is called following the mro of type(D()) from class B to top 
and not the mro of B.

All the magic is in the __getattribute__ of super  which retrieve the 
following class in the mro given its argument.


In [140]: class A(object) :
   .....:     def sup(self) : print 'a'
   .....:
   .....:

In [141]: class B(A) :
   .....:     def sup(self) : print 'b'
   .....:
   .....:

In [142]: class C(A) :
   .....:     def sup(self) : print 'c'
   .....:
   .....:

In [143]: class D(B,C) : pass
   .....:


In [147]: super.__getattribute__(super(D,D()), 'sup')()
b

In [148]: super.__getattribute__(super(B,D()), 'sup')()
c

In [149]: super.__getattribute__(super(C,D()), 'sup')()
a

Hope this is clear.

_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From johnjsal at NOSPAMgmail.com  Tue Sep 19 15:20:22 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 19:20:22 GMT
Subject: help with relative imports
In-Reply-To: <mailman.290.1158692827.10491.python-list@python.org>
References: <bgWPg.3$1n3.37@news.tufts.edu>	<mailman.286.1158690229.10491.python-list@python.org>	<pMWPg.5$1n3.96@news.tufts.edu>
	<mailman.290.1158692827.10491.python-list@python.org>
Message-ID: <WpXPg.8$1n3.69@news.tufts.edu>

Robert Kern wrote:

> Remember that this is code in the A.B.C module.

Oh! That clears it all up! I wasn't realizing that the import statements 
were being executed from within the C module! Thanks! :)


From rshepard at appl-ecosys.com  Sat Sep 16 11:29:26 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Sat, 16 Sep 2006 08:29:26 -0700 (PDT)
Subject: Coding Nested Loops
In-Reply-To: <eeg5o2$226$00$1@news.t-online.com>
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.155.1158356025.10491.python-list@python.org>
	<eeg5o2$226$00$1@news.t-online.com>
Message-ID: <Pine.LNX.4.64.0609160823070.13961@salmo.appl-ecosys.com>

On Sat, 16 Sep 2006, Peter Otten wrote:

> As George hinted, I went a bit over the top with my itertools example.
> Here is a translation into static lists (mostly):

Peter,

   Thank you. This is clearer to me. While your original code certainly works
it reminded me of The C Users Journal's annual obfuscated C contests. :-)

> from random import choice

   Two questions germane to random: 1) Why wasn't choice available when I
used 'import random,' and 2) What are the differences between 'choice' and
'shuffle?'

> Of course nested loops will work, too. Use whatever you find easiest to
> maintain.

   I found the library page and will continue looking for more comprehensive
documentation.

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From sandravandale at yahoo.com  Mon Sep  4 12:33:46 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 4 Sep 2006 09:33:46 -0700
Subject: threading support in python
In-Reply-To: <1157381880.697001.260070@m73g2000cwd.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
Message-ID: <1157387626.242107.92070@p79g2000cwp.googlegroups.com>

The trouble is there are some environments where you are forced to use
threads. Apache and mod_python are an example. You can't make use of
mutliple CPUs unless you're on *nux and run with multiple processes AND
you're application doesn't store large amounts of data in memory (which
mine does) so you'd have to physically double the computer's memory for
a daul-core, or quadruple it for a quadcore. And forget about running a
windows server, apache will not even run with multiple processes.

In years to come this will be more of an issue because single core CPUs
will be harder to come by, you'll be throwing away half of every CPU
you buy.

-Sandra



From steve at holdenweb.com  Mon Sep 11 23:10:47 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 04:10:47 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <df2316bd0609111957p13de28dg49810cad44fada9a@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<df2316bd0609111710t41281120ve6363561f9d92f67@mail.gmail.com>	<ee4vve$rrj$1@sea.gmane.org>
	<df2316bd0609111957p13de28dg49810cad44fada9a@mail.gmail.com>
Message-ID: <ee58ee$eri$1@sea.gmane.org>

Mike Owens wrote:
> On 9/11/06, Steve Holden <steve at holdenweb.com> wrote:
> 
> 
>>>Furthermore, I'm not responding to Python's representation of one
>>>thing or another. I am responding to some of the ridiculous and unfair
>>>criticisms directed at SQLite. Whatever Python did or didn't do, or
>>>whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
>>>drug through the mud.
>>>
>>
>>Which is precisely why I took pains to acknowledge that there were many
>>purposes for which SQLite is entirely suitable.
> 
> 
> Which was objective and diplomatic. Thanks.
> 
Well known for my even temper and cool objective thinking.
My modesty, too ;-)

> 
>>>>You shouldn't need to
>>>>add check constraints to verify that the value stored in an integer
>>>>column is actually an integer.
>>>
>>>You should if your using SQLite, and this is clearly documented:
>>>http://www.sqlite.org/datatype3.html.
>>>
>>
>>Right. In which case, why bother to define the types of the columns in
>>your table declarations?
> 
> 
> Actually there is some use for this, so long as the declared types
> correspond to one of SQLite's storage classes -- INTEGER, REAL, TEXT,
> BLOB, or NONE. When SQLite sees one of these as the declared type, it
> will apply some "affinity" rules for updates/inserts which will
> attempt to coerce the input value to that type if possible. So while
> this does not give you true strict typing, it does provide you with
> something helpful if you code your application with this in mind. As
> already mentioned, you will need triggers or check constraints if you
> need true strict typing.
> 
> 
>>>Then what does calling it crappy and goofy suggest?
>>
>>That colloquial English expression is acceptable on this list.
> 
> 
> And what about some of the other colloquial expressions I saw but didn't repeat?
> 
Well, I'm not going to take responsibility for others' immoderate 
comments, am I? But remember that this is usenet, where generally you 
can count on somewhere between 20% and 80% of what you read being 
somewhere between ill-informed and downright wrong. This group seems to 
have a better record than most, but that just means less crap, not no 
crap ...
> 
>>Strict affinity mode seems to represent a movement towards more rigorous
>>type checking. So the designers of SQLIte accept that it wasn't perfect.
>>So what? Please, don't take on so. It's only ones and zeroes.
> 
> 
> This is an example of SQLite listening and responding to constructive
> feedback. When I first started using SQLite, it didn't have an
> autoincrement primary key. I made a case for it, asked nicely, and it
> was done in three days. Most people will agree that this approach
> tends to work better in most projects, as opposed to calling them
> goofy and crappy, or its author a crackpot.
> 
Works better for Python too. Anyway, you seem to be feeling better now, 
so I presume getting it off your chest helped :-)

SQLite will clearly fare well in the future with a responsive 
development team like that.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Wed Sep 27 04:46:49 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 09:46:49 +0100
Subject: Python website bug: Wrong URL in
	http://www.python.org/download/releases/2.5/highlights/
In-Reply-To: <1159342897.655102.175820@d34g2000cwd.googlegroups.com>
References: <1159342897.655102.175820@d34g2000cwd.googlegroups.com>
Message-ID: <451A3A79.60703@holdenweb.com>

Anand wrote:
> The URL which links to "Whats New in Python 2.5" in the following text
> is wrong.
> 
> "Here are some of the (subjective) highlights of Python 2.5. More
> detail on almost all of the new features can be found in the document
> What's New In Python 2.5"
> 
> It links to http://docs.python.org/dev/whatsnew/ whereas it should
> point to http://docs.python.org/whatsnew/whatsnew25.html instead.
> 
> I tried to report the bug in python.org using
> http://wiki.python.org/moin/PythonWebsiteCreatingNewTickets but since I
> dont have a Trac login there, I am reporting it here. Python.org
> webmaster, please consider this a bug report.
> 
See the Cc: address on this post? That's probably a much more effective 
way to communicate with the python.org webmasters. Relying on them to 
read a hgh-noise newsgroup like c.l.py is asking to be ignored.

Thanks for taking the time to try and keep the web site up to date.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rshepard at appl-ecosys.com  Fri Sep 15 15:27:55 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Fri, 15 Sep 2006 12:27:55 -0700 (PDT)
Subject: Coding Nested Loops
In-Reply-To: <4n05lqF86dttU1@individual.net>
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.140.1158340397.10491.python-list@python.org>
	<4n05lqF86dttU1@individual.net>
Message-ID: <Pine.LNX.4.64.0609151226450.24702@salmo.appl-ecosys.com>

On Fri, 15 Sep 2006, Bjoern Schliessmann wrote:

> That doesn't answer the question. A list of 2-tuples would do the same
> (and was ordered and could be indexed).

Bj?rn, et al.:

   For the purpose of generating a data sample, the list of 2-tuples will
work.

Thanks all,

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863

From webraviteja at gmail.com  Sun Sep  3 02:08:16 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 2 Sep 2006 23:08:16 -0700
Subject: auto fill out web form
In-Reply-To: <44fa68e5$1@news.comindico.com.au>
References: <44fa68e5$1@news.comindico.com.au>
Message-ID: <1157263696.212862.278950@m73g2000cwd.googlegroups.com>


Chris Smith wrote:
> Does anyone know of any python scripts that can help me automatically
> navigate through some forms so I can schedule the download the file at the
> end of all the questions?

ClientForm
http://wwwsearch.sourceforge.net/ClientForm/



From Mark.Geyzer at gmail.com  Tue Sep 19 05:22:04 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 19 Sep 2006 02:22:04 -0700
Subject: Formatting device from a script on Windows
Message-ID: <1158657724.805015.165750@b28g2000cwb.googlegroups.com>

Hello, folks!
Script I am creating has to format a device - USB flash drive. I have
tried using regular DOS "format" through "os.system" - did not work
well, because DOS format requires input from user. And the script
should run without user interference.
I have taken a look at ActivePython "win32..." libraries - did not find
anything.
Ideas? Pretty please?

Regards, Mark



From jarausch at skynet.be  Mon Sep  4 14:54:38 2006
From: jarausch at skynet.be (Helmut Jarausch)
Date: Mon, 04 Sep 2006 20:54:38 +0200
Subject: Test for number?
In-Reply-To: <mailman.10343.1157394315.27775.python-list@python.org>
References: <G51489767.912.3617.1@mx-extra>
	<mailman.10343.1157394315.27775.python-list@python.org>
Message-ID: <44fc7664$0$10459$ba620e4c@news.skynet.be>

Tim Williams wrote:
> On 04/09/06, Dr. Pastor <elpX at adsihqx.com> wrote:
>> In the following code I would like to ascertain
>> that x has/is a number. What the simplest TEST should be?
>> (Could not find good example yet.)
>> ---
>> x=raw_input('\nType a number from 1 to 20')
>> if TEST :
>>                 Do_A
>> else:
>>                 Do_B
>> ---
> 
> Something simple like the following might help,
> 
>>>> def numtest():
> ...     x=raw_input('\nType a number from 1 to 20')
> ...     try:
> ...         x=int(x)
> ...         print x, "is a number between 1 & 20 "
> ...     except:
> ...         print x, "is not a number"
> ...
>>>> numtest()   # enter 1
> 1 is a number between 1 & 20
>>>> numtest()  #  enter "f"
> f is not a number
> 
> its not a final solution though,  think input = -2, 5.5  or 21
> 

One step further

try:
    eval(x+'0')
....


-- 
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany


From sjmachin at lexicon.net  Tue Sep 19 20:31:56 2006
From: sjmachin at lexicon.net (John Machin)
Date: 19 Sep 2006 17:31:56 -0700
Subject: value exists (newbie question)
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
	<1158688561.267994.231680@i42g2000cwa.googlegroups.com>
	<1158691966.421259.118880@h48g2000cwc.googlegroups.com>
	<20060919135758.C3718@eris.io.com>
Message-ID: <1158712316.393649.265510@i42g2000cwa.googlegroups.com>

eldorado wrote:
> Hello,
>
> I am trying to parse some files so that if a postal code exists, but is
> longer than five digits it will return me only the first five digits:
> ...
> for insDict in insureDict:
>  	insDict['postalcode'] = insDict.get('postalcode')[:5]
> ...
> This works, except for when I get a blank postalcode.  In which case I get
(> the following error.
> ERR exceptions.TypeError: iteration over non-sequence

What is "blank"? Do you mean "empty" as in zero-length, or "contains
one or more spaces" as in "      " or do you mean "is None"? Which
statement causes the error? Could you possibly provide the traceback?

If an insDict has no key 'postalcode', then the .get() will return
None, and that insDict will have the equivalent of:
     insDict['postalcode'] = None
done to it, which may not be what you want.

However this will not of itself cause "TypeError: iteration over
non-sequence" ... either

(1) insureDict is not iterable -- BTW insureDict is a strangely chosen
name; it implies it is a dictionary, BUT insDict is quite obviously a
dict, which can't be used as a key for another dict .... what is
type(insureDict)?

or (2) you are getting this error later by trying to iterate over the
values in insDict dicts -- you think the values are all strings but one
or more contain None ... show us the traceback!!

>
> What I would like to do is to check to make sure a value exists.

Such a *what* value exists *where*?

HTH,
John



From webraviteja at gmail.com  Sat Sep 16 11:29:00 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 16 Sep 2006 08:29:00 -0700
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
Message-ID: <1158420540.813155.135850@k70g2000cwa.googlegroups.com>


Eric_Dexter at msn.com wrote:
> Has anyone tried this thing..
> http://www.regular-expressions.info/regexbuddy.html
>
> If I had $30 would this be worth getting or should I just try to learn
> the manual.  (I was hopeing the essential refrence would clear things
> up but I am downloading a gilgillion pages on the re module to try to
> learn it)
>
> http://www.dexrow.com

The time spent on reading about regular expressions will reward you
many times over. A tool is no substitute for that.

However, a visual tool does help in constructing complex expressions.
Python includes one such. Search for redemo.py

On Windows
C:\Python24\Tools\scripts\redemo.py

There are also several good open source tools on Sourceforge. Try them
out.



From tjgolden at gmail.com  Thu Sep 21 04:01:46 2006
From: tjgolden at gmail.com (Tim Golden)
Date: 21 Sep 2006 01:01:46 -0700
Subject: get process id...
In-Reply-To: <1158824998.589895.36630@m7g2000cwm.googlegroups.com>
References: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
	<1158769823.998456.171070@b28g2000cwb.googlegroups.com>
	<1158824998.589895.36630@m7g2000cwm.googlegroups.com>
Message-ID: <1158825706.780349.102880@m7g2000cwm.googlegroups.com>

billie wrote:
> georgeryoung at gmail.com ha scritto:
>
> > SpreadTooThin wrote:
> > > How does one get the process id?
> > > Is there a method for windows and unix (mac os x etc...)
> >
> > under linux, do:
> >   import os
> >   os.getpid()
>
> Under Windows:
> import ctypes
> ctypes.windll.kernel32.GetCurrentProcessId()

Anything wrong with os.getpid () under Windows, too?

<dump>
Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.getpid ()
3504
>>>
</dump>

TJG



From fanglicheng at gmail.com  Tue Sep 12 02:18:28 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 11 Sep 2006 23:18:28 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158040245.635848.169000@h48g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040245.635848.169000@h48g2000cwc.googlegroups.com>
Message-ID: <1158041908.842965.145530@m73g2000cwd.googlegroups.com>

Thank you very much, Tim and Monkee.

In fact, what I'm doing is handle a lot of regular expressions. I
wanted to build VERY LONG regexps part by part and put them all into a
file for easy modification and maintenance. The idea is like this:

(*INT) = \d+
(*DECIMAL) = (*INT)\.(*INT)
(*FACTION) = (*DECIMAL)/(*DECIMAL)
(*NUMERALS) = (*FACTION)|(*DECIMAL)|(*INT)
... ...

What's inside the sytactically wrong (* and ) is something to be
replaced, and then I wrote a little script to do the string
substitution, to get very long regexps to be compiled. I thought that
might be a way to handle long and complex regexps, and in this course I
encountered the problem with the semantics of '|'.

My approach may sound desperate and funny, but please, do you have any
good idea as to how to handle long and complex regexps?



From steve at holdenweb.com  Mon Sep 11 11:51:42 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 16:51:42 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <1157989290.649744.167690@h48g2000cwc.googlegroups.com>
References: <mailman.256.1157987147.5279.python-list@python.org>
	<1157989290.649744.167690@h48g2000cwc.googlegroups.com>
Message-ID: <ee40l6$hno$2@sea.gmane.org>

Rob Wolfe wrote:
> Hari Sekhon wrote:
> 
>>I am writing a wrapper to a binary command to run it and then do
>>something with the xml output from it.
>>
>>What is the best way of making sure that the command is installed on the
>>system before I try to execute it, like the python equivalent of the
>>unix command "which"?
>>
>>Otherwise I'd have to do something like:
>>
>>if os.system('which somecommand') != 0:
>>    print "you don't have %s installed" % somecommand
>>    sys.exit(1)
>>
>>I know that isn't portable which is why a python solution would be
>>better (although this will run on unix anyway, but it'd be nice if it
>>ran on windows too).
> 
> 
> IMHO this is pretty portable:
> 
> 
>>>>def is_on_path(fname):
> 
> ....     for p in os.environ['PATH'].split(os.pathsep):
> ....             if os.path.isfile(os.path.join(p, fname)):
> ....                     return True
> ....     return False
> 
Except that the fname will then have to be a ".exe" on Windows and not 
on Unix.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Mon Sep 25 10:25:06 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 07:25:06 -0700
Subject: Deprecation in String.joinfields()
In-Reply-To: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>
References: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>
Message-ID: <1159194306.738685.264540@m73g2000cwd.googlegroups.com>


Anoop wrote:
> Hi All,
>
> I am getting the following error while trying to use deprecation
>
> Please help
>
> >>> li = ["a", "b", "mpilgrim", "z", "example"]
> >>> newname = string.joinfields (li[:-1], ".")
> >>> newname
> 'a.b.mpilgrim.z'
> >>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'joinfields'
>
> >>> newname1 = string.join (li[:-1], ".")
> >>> newname1
> 'a.b.mpilgrim.z'
> >>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'join'
>

Hi Anoop, and welcome to Python.
1. Pretend the string module doesn't exist. "Deprecated" means
"outdated; *don't* use it".
2. Instead use methods of string objects (more precisely, str objects
and unicode objects, which have mostly the same methods).

In this case

| >>> '.'.join(li)
| 'a.b.mpilgrim.z.example'

Yes, I know it looks strange -- FAQ: why not li.join('.') -- but that's
the way it is.

What tutorial or textbook are you using that led you down the
string-module path?

Cheers,
John



From kent at kentsjohnson.com  Sun Sep 10 21:30:17 2006
From: kent at kentsjohnson.com (Kent Johnson)
Date: Mon, 11 Sep 2006 01:30:17 GMT
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.235.1157932438.5279.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>	<mailman.223.1157856559.5279.python-list@python.org>	<4g%Mg.770$5i7.457@newsreading01.news.tds.net>
	<mailman.235.1157932438.5279.python-list@python.org>
Message-ID: <J_2Ng.785$5i7.332@newsreading01.news.tds.net>

Dick Moores wrote:

> I downloaded Python (7) from 
> http://www.textpad.com/add-ons/synn2t.html and put the file 
> PythonV2.4.syn in C:\Program Files\TextPad 4\system .
> 
> However, no syntax highlighting is showing up. so I must have done 
> something wrong. Do I have to do something other than put 
> PythonV2.4.syn in C:\Program Files\TextPad 4\system ?

One more step - make a new Document Class for Python (in the prefs). 
Associate it with *.py, turn on syntax highlighting and select the 
syntax file you downloaded.

> 
> Also, why do you use TextPad instead of IDLE?

You're kidding, right?

Kent


From steve at holdenweb.com  Sat Sep 16 14:55:39 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 16 Sep 2006 14:55:39 -0400
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <1158431981.048450.27810@i42g2000cwa.googlegroups.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
	<1158431981.048450.27810@i42g2000cwa.googlegroups.com>
Message-ID: <eehhab$bki$1@sea.gmane.org>

sjdevnull at yahoo.com wrote:
> Frank Millman wrote:
> 
>>Dale Strickland-Clark wrote:
>>
>>>Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
>>>a newly inserted record?
>>>
> 
> 
>>I used to use 'select lastval()', but I hit a problem. If I insert a
>>row into table A, I want the id of the row inserted. If it is a complex
>>insert, which triggers inserts into various other tables, some of which
>>may also be auto-incrementing, lastval() returns the id of the row last
>>inserted into any auto-incrementing table.
>>
>>I therefore use the following -
>>    cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)
> 
> 
> Aren't both of these inherently racey?  It seems to me like you need
> some kind of atomic insert-and-return-id value; otherwise you don't
> know if another thread/process has inserted something else in the table
> in between when you call insert and when you select lastval/currval.
> 
> Or does postgres have some transactional atomicity here?
> 
currval(sequence) is alleged to be connection-specific in the PostgreSQL 
documentation for currval: """Return the value most recently obtained by 
nextval for this sequence in the current session. (An error is reported 
if nextval has never been called for this sequence in this session.) 
Notice that because this is returning a session-local value, it gives a 
predictable answer whether or not other sessions have executed nextval 
since the current session did."""

> I'm very interested in an answer to the OP's question as well.  As far
> as I can tell, the best you can do is make the ID a primary key, select
> the nextval _before you insert, explicitly set it on insert, and then
> you'll get an error if you lost a race and you can select nextval, set
> it, and try again (repeat until success).
> 
> That's nasty and I'm sure there's a real solution but I haven't found
> it yet.
> 
The real solution has been given already: you just haven't brought 
yourself to believe it yet ;-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Thu Sep 28 12:07:39 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 17:07:39 +0100
Subject: License / Registration key enabled software
In-Reply-To: <slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>	<mailman.847.1159402807.10491.python-list@python.org>	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>
	<slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efgrus$o5n$1@sea.gmane.org>

Sybren Stuvel wrote:
> Mike Playle enlightened us with:
> 
>>Imagine you're an IT manager for a medium-to-large company who wants
>>to use some expensive piece of software. You talk to the vendor and
>>buy a licence to use the software on up to 5 machines at once, but
>>you don't know who in the company will want to use it, so for
>>convenience you want to install it on every PC in the building.
>>
>>Having installed it all over the shop, how can you be sure that only
>>5 people are using it at any one time?
> 
> 
> Write the software in such a way that it needs a certificate on a
> smartcard, then supply the company with five smartcards.
> 
And you guarantee that the contents of the smartcard is only used by one 
user at a time by building a licensing system for the smartcards?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From johnjsal at NOSPAMgmail.com  Fri Sep 29 14:00:37 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 18:00:37 GMT
Subject: creating a small test server on my local computer
Message-ID: <9bdTg.54$1n3.399@news.tufts.edu>

Ok, this is completely unnecessary so I don't intend to get into stuff 
that's beyond my skill, but I'm wondering how simple it would be to use 
Python to create a server that runs on my computer so I can test my 
webpages (because otherwise I have to keep sending them to our IT person 
so he can upload them to the server).

The catch is that I need a server that supports SSI and I have no clue 
how to write something like this. If it's already been included in the 
standard library, then that would be great, otherwise I won't really 
mess with it.

Thanks.


From MonkeeSage at gmail.com  Sun Sep 24 14:13:58 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 24 Sep 2006 11:13:58 -0700
Subject: gtk.Entry Colors
References: <L8wRg.16872$mj5.1449@read3.inet.fi>
Message-ID: <1159121638.446784.137070@b28g2000cwb.googlegroups.com>

Tuomas wrote:
> I would like to manipulate PyGTK Entry widget's background and
> foreground colors. Is it possible? How?

Yes, it is possible:

# widget color
entry.modify_base(gtk.STATE_NORMAL, gtk.gdk.color_parse("#FF0000"))
# frame color
entry.modify_bg(gtk.STATE_NORMAL, gtk.gdk.color_parse("#0000FF"))
# text color
entry.modify_text(gtk.STATE_NORMAL, gtk.gdk.color_parse("#00FF00"))

See:
http://www.pygtk.org/pygtk2reference/class-gtkwidget.html
http://www.pygtk.org/pygtk2reference/class-gdkcolor.html

Regards,
Jordan



From goofyheadedpunk at gmail.com  Thu Sep 14 13:05:57 2006
From: goofyheadedpunk at gmail.com (Brian L. Troutwine)
Date: 14 Sep 2006 10:05:57 -0700
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
Message-ID: <1158253557.860366.285290@e3g2000cwe.googlegroups.com>

This is a general reply to all.

Thanks for all the suggestions. I hadn't really thought about filtering
empty dictionaries because the data I'm processing won't have them, but
it does make for a much nicer, more general filter. I did end up using
bearophileH's code, but that's mostly because he got there first. Each
solution functioned as advertised.

Again, thanks for all the help.



From brian at sweetapp.com  Tue Sep 26 11:36:28 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Tue, 26 Sep 2006 17:36:28 +0200
Subject: A critique of cgi.escape
In-Reply-To: <7xu02u1wl6.fsf@ruckus.brouhaha.com>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<Xns984996E6BABCEduncanbooth@127.0.0.1>	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>	<mailman.672.1159275735.10491.python-list@python.org>	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>	<mailman.680.1159277904.10491.python-list@python.org>	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>	<mailman.687.1159280315.10491.python-list@python.org>	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>	<mailman.690.1159282116.10491.python-list@python.org>	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>	<mailman.698.1159283878.10491.python-list@python.org>
	<7xu02u1wl6.fsf@ruckus.brouhaha.com>
Message-ID: <451948FC.9040009@sweetapp.com>

Paul Rubin wrote:
> Brian Quinlan <brian at sweetapp.com> writes:
>> o cgi.escape is not meant for serious web application development,
> 
> What is it meant for then?  Why should the library ever implement
> anything in a half-assed way unsuitable for serious application
> development, if it can supply a robust implementation instead?

I'd have to dig through the revision history to be sure, but I imagine 
that cgi.escape was originally only used in the cgi module (and there 
only in it's various print_* functions). Then it started being used by 
other core Python modules e.g. cgitb, DocXMLRPCServer.

The "mistake", if there was one, was probably that escape wasn't spelled 
_escape and got documented in the LaTeX documentation system.

All of this is just speculation though.

Cheers,
Brian


From rupole at hotmail.com  Tue Sep 26 18:00:14 2006
From: rupole at hotmail.com (Roger Upole)
Date: Tue, 26 Sep 2006 18:00:14 -0400
Subject: Win32: Access to network resources w/o user login
References: <1159293185.847276.77190@i3g2000cwc.googlegroups.com>
Message-ID: <1159308235_37543@sp6iad.superfeed.net>


"utabintarbo" <utabintarbo at gmail.com> wrote in message news:1159293185.847276.77190 at i3g2000cwc.googlegroups.com...
> Is there a way to (programmatically) access network resources from a
> WinXP client without a user being logged in? I guess I need to know
> where the fstab file is in Windows. :-P
>
> Some more background: I am trying to access a samba share which is set
> up for anonymous login (all unknown users are mapped to a known user)
> with a process I hope to turn into a service (as soon as I figure
> *that* out as well :-P).
>
> Any help is *greatly* appreciated!
>

When the service tries to establish a connection with the Samba server,
it will use whatever credentials it's set up to start as.
You really shouldn't have to do anything special.

However, you can initiate the connection with an alternate
username using win32net.NetUseAdd or
win32wnet.WNetAddConnection2.

      Roger






----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From larry.bates at websafe.com  Mon Sep 11 19:27:41 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 18:27:41 -0500
Subject: best small database?
In-Reply-To: <1158009296.414226.305020@i42g2000cwa.googlegroups.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>
Message-ID: <2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>

Blair P. Houghton wrote:
> Larry Bates wrote:
>> The filesystem is almost always the
>> most efficient place to store files, not as blobs in a
>> database.
> 
> I could get all theoretical about why that's not so in most cases,
> but there are plenty of cases where it is so (especially when the
> person doing the DB doesn't get the idea behind all filesystems,
> which is that they are themselves simplified databases), so
> I won't*.
> 
> In this case, the filesystem may be the best place to
> do the work, because it's the cheapest to implement
> and maintain.
> 
> --Blair
> 
> * - okay, I will
> 
> 1.  Since the filesystem is a database, making accesses
> to it after being directed there by a database means you're
> using two database systems (and an intervening operating
> system)  to do one thing.  Serious databases work from
> disks with no filesystem to get rid of that extra layer entirely.
> But there are benefits to having things in files reachable by
> ordinary tools, and to having the OS mediating access to
> the data, but you need to be sure you need those benefits
> and can afford the overhead.  Academic in most cases,
> including the one that started this thread.
> 
> 2.  When using the filesystem as the database
> you only get one kind of native association, and have to
> use semantics in the directory and filenames to give you
> hints as to the type stored at a particular location.  You get a
> few pieces of accounting data (mod times, etc.) in the
> directory listing, but can't associate anything else with
> the file directly, at least not unless you create another
> file that has the associated data in it, or stuff the extra
> data in the file itself, but then that makes each file
> a database...see where it goes?  Sometimes it's better
> to come up with a schema you can extend rationally to
> fit the problem you are trying to solve.
> 
> --Blair
> 
Not quite sure why response "bothered" you so much but it
appears it did.  I'll admit that I was doing my best to read
the OP's mind in my answer.

Item 1 - The OP who specifically said he wanted to store 100's
of files.  You rarely need a database to store 100's of anything
and the overhead of installing and maintaining one isn't typically
worth the effort.  Store the info in a text file and read the
entire file into memory and do linear searches.  Python can search
100's of items in a list faster than you can even begin an SQL
query.

Item 2 - You will note that I said "If you need multiple indexes
into these files, then use a database, but only for the indexes
that point to the files on the filesystem".  You sometimes need
multiple indexes (which databases are GREAT at providing).

As far as "rational extension" is concerned, I think I can relate.
As a developer of imaging systems that store multiple-millions of
scanned pieces of paper online for customers, I can promise you
the file system is quite efficient at storing files (and that is
what the OP asked for in the original post) and way better than
storing in Oracle blobs.  Can you store them in the database,
absolutely.  Is it efficient and manageable.  It has been our
experience that it is not.  Ever tried to upgrade Oracle 9 to
Oracle 10 with a Tb of blobs?

-Larry


From danielmarkhot at gmail.com  Fri Sep 22 12:02:45 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 22 Sep 2006 09:02:45 -0700
Subject: Question about the article "py2exe compiler" in Python Cookbook by
	Alexander Semenov
Message-ID: <1158940964.919242.148320@b28g2000cwb.googlegroups.com>

Hello all:

I follow the following tutorial

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/108598
Description:
script for making executables with py2exe
##############
from distutils.core import setup
import sys, os, py2exe

name = sys.argv[1]
sys.argv[1] = 'py2exe'
sys.path.append(os.path.dirname(os.path.abspath(name)))

setup(name=name[:-3], scripts=[name])
##############

However, I can not get the expected results.

1> save the above script as file makexe.py under the folder
C:\Program Files\Python24\Tools\Scripts

2> add this path to system path

3> C:\> makexe.py myscript.py

What I got from the "dist" folder are as follows:
C:\dist\unicodedata.pyd
C:\dist\w9xpopen.exe
C:\dist\zlib.pyd
C:\dist\bz2.pyd
C:\dist\library.zip
C:\dist\MSVCR71.dll
C:\dist\python24.dll

Suppose I should get an executable file under this folder.

What should I do to solve this problem?


Thank you
-Daniel



From cjlesh at gmail.com  Tue Sep 12 08:34:38 2006
From: cjlesh at gmail.com (cjl)
Date: 12 Sep 2006 05:34:38 -0700
Subject: Running python from a usb drive
In-Reply-To: <mailman.340.1158063541.5279.python-list@python.org>
References: <mailman.340.1158063541.5279.python-list@python.org>
Message-ID: <1158064478.044626.53180@e3g2000cwe.googlegroups.com>

Tim:

> That would be because it's PATHEXT not PATHTEXT (it's sort
> of like a PATH but for EXTensions).

Doh.

Me fail English? That's unpossible.

Thanks, I think everything is working with my poor man's movable
python.
Last on my todo list is to restore the assoc and ftype settings when
I'm done, and I found:

http://portableapps.com/node/121

Which seems to show how to do that.

CJL



From sjmachin at lexicon.net  Wed Sep 20 06:12:54 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 03:12:54 -0700
Subject: byte count unicode string
In-Reply-To: <mailman.317.1158745230.10491.python-list@python.org>
References: <mailman.317.1158745230.10491.python-list@python.org>
Message-ID: <1158747174.454017.194720@e3g2000cwe.googlegroups.com>


willie wrote:
> John Machin:
>
>  >You are confusing the hell out of yourself. You say that your web app
>  >deals only with UTF-8 strings. Where do you get "the unicode string"
>  >from??? If name is a utf-8 string, as your comment says, then len(name)
>  >is all you need!!!
>
>
> # I'll go ahead and concede defeat since you appear to be on the
> # verge of a heart attack :)
> # I can see that I lack clarity so I don't blame you.

All you have to do is use terminology like "Python str object, encoded
in utf-8" and "Python unicode object".

>
> # By UTF-8 string, I mean a unicode object with UTF-8 encoding:

There is no such animal as a "unicode object with UTF-8 encoding".
Don't make up terminology as you go.

>
> type(ustr)
> <type 'unicode'>
>  >>> repr(ustr)
> "u'\\u2708'"

Sigh. I suppose we have to infer that "ustr" is the same as the "name"
that you were getting as post data.  Is that correct?

>
> # The database API expects unicode objects:
> # A template query, then a variable number of values.
> # Perhaps I'm a victim of arbitrary design decisions :)

And the database will encode those unicode objects as utf-8, silently
truncating any that are too long -- just as Duncan feared? "Arbitrary"
is not the word for it. 

Good luck! 

Cheers,
John



From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 11:35:44 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 17:35:44 +0200
Subject: QOTW (was Re: does anybody earn a living programming in python?)
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
	<mailman.624.1159249638.10491.python-list@python.org>
	<efbg8h$c6j$1@panix3.panix.com>
Message-ID: <slrnehii6f.pnl.sybrenUSE@schuimige.stuvel.eu>

Aahz enlightened us with:
> Fredrik Lundh  <fredrik at pythonware.com> wrote:
>>
>>well, if you're only watching mtv, it's easy to think that there's
>>obviously not much demand for country singers, blues musicians,
>>British hard rock bands, or melodic death metal acts.
>
> Any other votes for this being QOTW?

+1 here

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From gregpinero at gmail.com  Sat Sep 30 22:09:19 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Sat, 30 Sep 2006 22:09:19 -0400
Subject: How to Catch 2 Exceptions at once?
In-Reply-To: <efn6e6$dnv$1@sea.gmane.org>
References: <312cfe2b0609301832q6be77943n2b32494226ccd42d@mail.gmail.com>
	<efn6e6$dnv$1@sea.gmane.org>
Message-ID: <312cfe2b0609301909y346998d7q326d348a3892db8d@mail.gmail.com>

On 9/30/06, Steve Holden <steve at holdenweb.com> wrote:
> As usual, by adding an additional name after the exception specification:
>
>          try:
>              self.gses = opener.open(req)
>          except (urllib2.HTTPError,urllib2.URLError), exdata:
>              do something with exdata ...
>
> Pedantically speaking, of course, you aren't catching two exceptions at
> once because they don't occur simultaneously: you are writing a
> statement that catches either of two exceptions.
>

Thanks Steve!

I'll think about the two exceptions at once thing.  Sounds like a challenge ;-)

-Greg


From tal.no.no.spam at gmail.com  Fri Sep  8 02:38:08 2006
From: tal.no.no.spam at gmail.com (Tal Einat)
Date: 7 Sep 2006 23:38:08 -0700
Subject: How to stop an [Rpyc] server thread?
In-Reply-To: <1157658782.629267.250160@b28g2000cwb.googlegroups.com>
References: <1157658782.629267.250160@b28g2000cwb.googlegroups.com>
Message-ID: <1157697488.301555.79150@i42g2000cwa.googlegroups.com>


Saizan wrote:
> I embedded an Rpyc threaded server in a preexistent daemon (an irc
> bot), this is actually very simple;
>   start_threaded_server(port = DEFAULT_PORT)
> then I had the necessity to stop the thread which accept() new
> connections without killing the whole app, the thread is simply a while
> True that spawn a new thread which serves each connection, so I placed
> a flag and a break in this way:
> def local_threaded_server(port = DEFAULT_PORT, **kw):
> 	global stop
> 	sock = create_listener_socket(port)
> 	while True:
>                 newsock, name = sock.accept()
>                 t = Thread(target = serve_socket, args = (newsock,),
> kwargs = kw)
> 		t.setDaemon(True)
> 		t.start()
> 		if stop: break

First off, instead of the "while True" and the break, you could write:
while not stop:

> but, since sock.accept() blocks, when I set stop=True the server wait
> one more connection and only then stops.
> I tried sock.settimeout(10) before entering the while and so checking
> timeout exception on accept() but I experienced a strange behavior, the
> clients connections close immediatly, with one of these exceptions on
> the client side on their first use of the rpc connection:

[snip]

> I'm not an expert in socket programming, but I can't see the
> correlation between the "listener socket" being in timeout mode and a
> different behavior the other sockets..
> Anyhow the main goal is being able to shut down the thread of the rpyc
> server, any other way is an appreciated suggestion.

Now to the real issue. I've also had such weird problems with socket
timeout in Python. The best workaround I found is to use select() to
check for activity on the socket(s), and use select()'s timeout
mechanism. So far, this has worked without a hitch on both WindowsXP
and Solaris Sparc9 installations.

- Tal
reduce(lambda m,x:[m[i]+s[-1] for i,s in enumerate(sorted(m))],
       [[chr(154-ord(c)) for c in '.&-&,l.Z95193+179-']]*18)[3]



From duncan.booth at invalid.invalid  Tue Sep 26 10:20:30 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 14:20:30 GMT
Subject: Copyright lawyer advises "be careful" using Python?
References: <1159278679.023048.275710@i42g2000cwa.googlegroups.com>
Message-ID: <Xns984A9C0DAA621duncanbooth@127.0.0.1>

johnzenger at gmail.com wrote:


> Is the PSF that much different from any other open source license?

Only in not having a copyleft and therefore being potentially usable by
companies wishing to develop closed software. Generally such companies 
wouldn't even consider using GPL'd software so they don't care whether or 
not it has patent issues.

> Can anyone identify everyone who ever contributed to the Linux source
> code? Does ANY free "tool" indemnify people? 

Probably not, and probably not.

> In fact, does Microsoft indemnify Visual Studio users against
> the risk that one day the BASIC language will be found to have been
> infringing a patent all along?

I'm afraid they do.

From
http://download.microsoft.com/download/1/5/a/15a6c1c7-cf7c-455f-9927-986e
46cab2ae/Yankee_Indemnification_Report.pdf (dated 2004): 

> Microsoft

> Microsoft provides the broadest, most specific indemnification
> available in the industry. If a corporate customer licenses Microsoft
> software through the Volume License channel, Microsoft will compensate
> that customer for any legal costs should any company assert any type
> of IP infringement claim related to the software covered by the
> license agreement. All Microsoft Volume Licensing customers
> automatically receive this protection.

> As of November 10, Microsoft expanded its indemnification to include
> consumers and corporate customers. Microsoft?s IP indemnification for
> Volume Licensing is comprehensive and does not include a cap. It
> addresses customer requests that Microsoft completely cover damages
> and settlements on IP claims that are within its control.

> There are some reasonable limitations for claims that are not solely
> within Microsoft?s control. For example, Microsoft will not indemnify
> for damages arising from non- Microsoft components.

I'm sure the actual terms and conditions are spelled out somewhere, that's 
just the first document I found with a reasonable description of what they 
offer.


From MonkeeSage at gmail.com  Sat Sep 23 08:46:33 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 05:46:33 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net> <ef37r0$5hj$3@lust.ihug.co.nz>
	<4nko0uFar902U2@individual.net>
Message-ID: <1159015593.127666.178770@m7g2000cwm.googlegroups.com>

Bjoern Schliessmann wrote:
> Lawrence D'Oliveiro wrote:
>
> > Which is why C++ allows "not", "and" and "or".
>
> Is this standards compliant? My reference (book) doesn't contain it,
> but g++ allows it.

"The C++ standard provides _operator keywords_ (Fig. 21.8) that can be
used in place of several C++ operators." (Deitel & Deitel, 2001; 1082).

Regards,
Jordan



From paul at boddie.org.uk  Fri Sep  1 04:57:40 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 1 Sep 2006 01:57:40 -0700
Subject: Pros/Cons of Turbogears/Rails?
References: <WXmIg.20772$gY6.18513@newssvr11.news.prodigy.com>
	<1156726071.579429.44650@b28g2000cwb.googlegroups.com>
	<1156740469.645955.52080@i3g2000cwc.googlegroups.com>
	<1156768355.275370.129680@h48g2000cwc.googlegroups.com>
	<1157038022.237121.127780@m73g2000cwd.googlegroups.com>
	<1157040293.903010.152250@m79g2000cwm.googlegroups.com>
	<1157075664.178253.196130@m79g2000cwm.googlegroups.com>
Message-ID: <1157101060.372715.310970@e3g2000cwe.googlegroups.com>

fuzzylollipop wrote:
> Paul Boddie wrote:
> >
> > In various open source circles, the mere usage of 1.0 may indicate some
> > kind of stability, but not necessarily maturity, or at least the desire
> > of the developers to persuade users that the code is ready for them to
> > use.
>
> nope in GENERAL usage, 1.x means that the developer is designating a
> version that is feature complete and stable.

Please note the distinction between "stable" and "mature" - these are
not quite the same thing. Django, Rails and Turbogears may be at or
approaching 1.0, meaning that their developers regard them as being
stable (ie. no showstopping bugs), but that's not the same as being
mature. Moreover, the developers of all those frameworks will most
likely not stop at 1.0 but start working towards 2.0, possibly creating
quite a different product.

> I never ever mentioned comparing version numbers between differing packages.

No, but there are important psychological factors at work when choosing
and interpreting version numbers: do you go for ABC 0.9, XYZ 1.2 or PQR
7.1? What about the newly announced XYZ 2.0 - is that a safer choice
than its 1.x predecessor?

> MY POINT was the developers of Rails JUST RECENTLY decided that it was
> ready for general consumption compared to all the PREVIOUS Rails
> releases.

That judgement call may be true, but they haven't exactly been reticent
about getting people to download and use it before now.

> And NONE of these frameworks has been used to power anything along the
> scale of what I work with on a daily basis.

I can believe that. Do you have any success stories to share?

> And speaking from experience, autogenerated "Active Object Pattern"
> frameworks dont' scale. And Rails is no exception. It didn't work 10
> years ago when all the ORM vendors were selling ridiculously price
> "point and click" database application builders, what makes people
> think it will now?

My feeling was that any object-relational mapper that (supposedly in
this case) dictates how you're supposed to design your database
automatically rules itself out over a vast territory of existing and
new applications. Having seen the EJB army march themselves into a
swamp, my feeling is that most such mappers seem to be an increasingly
complicated excuse not to learn SQL.

Paul



From kay.schluehr at gmx.net  Mon Sep 25 08:09:20 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 25 Sep 2006 05:09:20 -0700
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <1159186160.381835.317020@m7g2000cwm.googlegroups.com>


Roy Smith wrote:
> I'm working on a product which for a long time has had a Perl binding for
> our remote access API.  A while ago, I wrote a Python binding on my own,
> chatted it up a bit internally, and recently had a (large) customer enquire
> about getting access to it.
>
> I asked for permission to distribute the Python binding, and after a few
> weeks of winding its way through the corporate bureaucracy I got an email
> from a product manager who wants to meet with me to "understand the market
> demand for Python API before we commercialize it".
>
> Can anybody suggest some good material I can give to him which will help
> explain what Python is and why it's a good thing, in a way that a
> marketing/product management person will understand?

There isn't an immediate economical benefit, but a technician has to
care for the "state of the art". It is both a net-effect regarding
technologies and developers but also something more vague, which is a
little harder to get: a product has to have a certain appeal. Perl
might have been a good decision 10 years ago but appears a bit shaddy
these days where better designed languages exist with equal power and
far more clean APIs.



From beliavsky at aol.com  Mon Sep 18 15:40:00 2006
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 18 Sep 2006 12:40:00 -0700
Subject: why a main() function?
Message-ID: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>

I think I read a suggestion somewhere to wrap the code where a Python
script starts in a main() function, so one has

def main():
    print "hi"

main()

instead of

print "hi"

What are the advantages of doing this?



From MonkeeSage at gmail.com  Sat Sep 30 19:01:31 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 16:01:31 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<mailman.1011.1159643152.10491.python-list@python.org>
Message-ID: <1159657291.511404.95000@c28g2000cwb.googlegroups.com>

BJ?rn Lindqvist wrote:
> The code that you write in the positions A and B really are misplaced.
> They arent part of the iteration of list. The two tasks, find item and
> do something with item should be separated.

I think it is useful to have them joined. Consider a contrived example:

for i in (1,2,3,0,5,6):
  try:
    print 10 / i
  except:
    print 'Error in data'
    break
else:
  print 'Data processed cleanly'

Yes, you could use a flag variable instead:

done = 1
for i in (1,2,3,0,5,6):
  try:
    print 10 / i
  except:
    print 'Error in data'
    done = 0
    break
if done:
  print 'Data processed cleanly'

...but that is not as clean imo.

Regards,
Jordan



From deets at nospam.web.de  Thu Sep 28 17:52:12 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 28 Sep 2006 23:52:12 +0200
Subject: Recursive descent algorithm able to parse Python?
In-Reply-To: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>
References: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>
Message-ID: <4o2ugcFcm4npU1@uni-berlin.de>

seberino at spawar.navy.mil schrieb:
> I'm a compiler newbie and curious if Python grammar is able to
> be parsed by a recursive descent parser or if it requires
> a more powerful algorithm.

I might be mistaken, but isn't recursive descent one of the more 
powerful parsing techniques - for the price of non-linearity and even 
potentially non-termination?

Under that assumption: certainly!

Diez


From sjmachin at lexicon.net  Sat Sep  9 12:00:35 2006
From: sjmachin at lexicon.net (John Machin)
Date: 9 Sep 2006 09:00:35 -0700
Subject: newbie: datastructure `dictionary' question
In-Reply-To: <pan.2006.09.09.15.15.13.48103@notmal.com>
References: <pan.2006.09.09.15.15.13.48103@notmal.com>
Message-ID: <1157817635.260327.50030@d34g2000cwd.googlegroups.com>


jason wrote:
> Hello,
>
> I am completely new to python and I have question that I unfortunately
> could not find in the various documentation online. My best guess is
> that the answer should be quitte easy but I have just enterd the learning
> phase so that means a hightend chance for stupidity and mistakes on my
> part.
>
> I am trying to fill a nested dictionary from parsing a logfile. However
> each time there is only one key entry created and that's it. Just
> one entry, while the keys are different. That's 100% sure. I think
> therefore that it is an assignment error in my part. [there we have it...]
>
> To give an static example of the datastructure that I am using to clear
> any confusion on the datastructure part:
>
>     records = { 'fam/jason-a' : {
>         'date'    : 'Fri Sep  8 16:45:55 2006',
>         'from'    : 'jason',
>         'subject' : 'Re: Oh my goes.....',
>         'msize'   : '237284' },
>                 'university/solar-system' : {
>         'date'    : 'Fri Sep  8 16:45:46 2006',
>         'from'    : 'jd',
>         'subject' : 'Vacancies for students',
>         'msize'   : '9387' }
>     }
>
> Looping over this datastructure is no problem.
>     rkeys = ['date', 'from', 'subject', 'msize']
>     for folder in records.keys():
>         print '--'
>         print folder
>         for key in rkeys:
>             print records[folder][key]
>
> Now for the actual program/dynamic part - assignment in the loop I use the
> following function. Note `datum' is not a date object, just a string.
>
> def parselog(data):
>     other = 0
>     records = {}
>
>     for line in string.split(data, '\n'):
>         str = line.strip()
>         if str[:4] == 'From':
>             mfrom, datum = extrfrom(str), extrdate(str)
>             print datum, mfrom
>         elif str[:4] == 'Fold':
>             folder = extrfolder(str[8:])
>             records = {folder : { 'date' : datum, 'mesgbytes' : extrmsize(str[8:]), 'mesgcount' : 1}}

You are *assigning* records = blahblah each time around. "records" will
end up being bound to the blahblah related to the *last* record that
you read.

You can do it item by item:
    records[folder]['date'] = datum
    etc
or as a oneliner:
    records[folder] = {'date' : datum, 'mesgbytes' :
extrmsize(str[8:]), 'mesgcount' : 1}

When you find yourself using a dictionary with constant keys like
'date', it's time to start thinking OO.

class LogMessage(object):
   def __init__(self, date, .....)
        self.date = date
        etc

then later:

records[folder] = LogMessage(
                              date=datum,
                              mesgbytes= extrmsize(str[8:]),
                              mesgcount=1,
                              )


[snip]

HTH,
John



From vbfoobar at gmail.com  Wed Sep 13 00:52:28 2006
From: vbfoobar at gmail.com (vbfoobar at gmail.com)
Date: 12 Sep 2006 21:52:28 -0700
Subject: table (ascii text) lin ayout recognition
Message-ID: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>

Hello,

I am looking for python code useful to process
tables that are in ASCII text. The code must
determine where are the columns (fields).
Concerned tables for my application are various,
but their columns are not very complicated
to locate for a human, because even
when ignoring the semantic of  words,
our eyes see vertical alignments

Here is a sample table (must be viewed
with fixed-width font to see alignments):
=================================

44544      ipod          apple     black         102
GFGFHHF-12 unknown thing bizar     brick mortar  tbc
45fjk      do not know   + is less               biac
           disk          seagate   250GB         130
5G_gff                   tbd       tbd
gjgh88hgg  media record  a and b                 12
hjj        foo           bar       hop           zip
hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
qdsd       zert                    nope          nope

=================================

I want the python code that builds a representation
of this table (for exemple a list of lists, where each list
represents a table line, each element of the list
being a field value).

Any hints?
thanks



From metaperl at gmail.com  Tue Sep 12 10:43:19 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 07:43:19 -0700
Subject: Are Python's reserved words reserved in places they dont need to be?
Message-ID: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>

  -->  python -i
>>> class = "algebra"
  File "<stdin>", line 1
    class = "algebra"
          ^
SyntaxError: invalid syntax
>>>


Why isn' t the parser smart enough to see that class followed by an
identifier is used for class definition but class followed by equals is
a simple assignment?

Also, I had a bug where I tried to set the attributes "user" and "pass"
in an object but "pass" would not work because it is a reserved word.
Again pass should be reserved in certain contexts but not others.

Is Python 3k going to fix this sort of thing?



From bmearns at coe.neu.edu  Thu Sep 14 08:23:12 2006
From: bmearns at coe.neu.edu (bmearns)
Date: 14 Sep 2006 05:23:12 -0700
Subject: Outbound port on sockets
Message-ID: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>

Is it possible to specify which port to use as the outbound port on a
connection? I have the IP address and port number for the computer I'm
trying to connect to (not listening for), but it's expecting my
connection on a certain port.

Specifically, I'm trying to write an FTP host, and I'm trying to
implement the PORT command. From everything I've read, the client
supplies the IP address and port number for where I'm supposed to
connect to send it data (like a LISTing), and it's expecting me to
connect over port 20. If anyone is familiar with FTP and can tell me
whether this is true or not, whether I really need to go out on port
20, I'd appreciate it, as well.

Thanks.



From fredrik at pythonware.com  Tue Sep 12 08:59:40 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 14:59:40 +0200
Subject: Clarify Regex in Python.
In-Reply-To: <1158064674.441245.165610@d34g2000cwd.googlegroups.com>
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>	<mailman.341.1158063739.5279.python-list@python.org>
	<1158064674.441245.165610@d34g2000cwd.googlegroups.com>
Message-ID: <ee6avr$mor$1@sea.gmane.org>

cooldudevamsee at gmail.com wrote:

> I know there r many more methods to do the job, I just wonder can we
> turnoff the default behaviour of match method.

that's not the "default behaviour", that's how match works.  if you want 
search, use search instead.

</F>



From thorsten at thorstenkampe.de  Tue Sep 12 16:57:14 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 12 Sep 2006 21:57:14 +0100
Subject: Newbie - ? get IDLE going on cygwin
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>
Message-ID: <1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>

* David J. Braden (2006-09-12 18:35 +0100)
> I can run Python in command-line mode fine from the cygwin shell; the 
> cygwin distribution also includes IDLE, which is apparently completely 
> installed, yet I am unable to get IDLE running. When I double-click 
> idle.bat (or idle.pyw) I am prompted to locate the program's creator. 
> Darn if I know what it is. If I try to invoke IDLE from cygwen bash, I 
> get "unable to remap c:\cygwin\bin\tk84.dll to same address as parent".

rebaseall
 
> Also - could someone plz recommend some useful environment variables for 
> Python on Windows? If I were to specify PYTHONDOC, should I use Unix or 
> Windows notation (e.g., "/" or "\").

You can set them under Windows in Windows notation or in your shell
startup file in Unix notation.

Thorsten


From onurb at xiludom.gro  Thu Sep  7 04:09:51 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 07 Sep 2006 10:09:51 +0200
Subject: Question about subclassing and overriding methods
In-Reply-To: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>
References: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>
Message-ID: <44ffd3d1$0$27565$626a54ce@news.free.fr>

Frank Millman wrote:
> Hi all
> 
> Assume a simple class -
> 
> class Test(object):
>     def __init__(self,x):
>         self.x = x
>     def getx(self):
>         print self.x
> 
> Test(1).getx()
> Test(2).getx()
> Test(3).getx()
> 
> As expected, the results are 1,2,3
> 
> Assume a slight variation, where given a particular condition I want a
> particular method to behave differently. I know that I could subclass,
> but for various reasons I preferred to do it this way -
> 
> class Test(object):
>     def __init__(self,x,y=False):
>         self.x = x
>         if y:
>             self.getx = self.getx2
>     def getx(self):
>         print self.x
>     def getx2(self):
>         print self.x * 2
> 
> Test(1).getx()
> Test(2,True).getx()
> Test(3).getx()
> 
> As expected, the results are 1,4,3
> 
> Now assume a subclass of the above class, where I want the method to
> behave diferently again -
> 
> class Test2(Test):
>     def __init__(self,x,y=False):
>         Test.__init__(self,x,y)
>     def getx(self):
>         print self.x*3
> 
> Test2(1).getx()
> Test2(2,True).getx()
> Test2(3).getx()
> 
> Here I was hoping that the results would be 3,6,9

Why ???

> but they are 3,4,9.

Yes, obviously.

> I thought that getx in Test2 would override getx in Test,

It does.

> even if getx
> in Test has been replaced by getx2, 

This "replacement" happens at instance initialisation time - ie, after
the class object have been created. If you don't want this to happen,
either skip the call to Test.__init__ in Test2.__init__, or make this
call with False as second param, or redefine getx2 in Test2. Or go for a
saner design...

> but clearly that is not happening.
> Can someone explain why.

Test2(2,True) calls Test2.__init__() with a Test2 instance 'self' and
y=True. Test2.__init__() then calls Test.__init__() with the same
instance and y=True. So the branch:
 if y:
   self.getx = self.getx2
is executed on the Test2 instance.

I don't see what puzzle you here.

> Thanks
> 
> Frank Millman
> 


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From tim at tdw.net  Thu Sep  7 04:29:51 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 7 Sep 2006 09:29:51 +0100
Subject: sending emails using python
In-Reply-To: <B51712964.236.7189.1@mx-extra>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
Message-ID: <9afea2ac0609070129m2dc3f71dp57897d2df9592d23@mail.gmail.com>

On 07/09/06, Sybren Stuvel <sybrenUSE at yourthirdtower.com.imagination> wrote:
> sridhar enlightened us with:
> > iam having user account on an exchangeserver.
> > with that can i send an email using python?
> >
> > if iam using the following code iam getting error
> >
> > Traceback (most recent call last):
> >   File
> > "C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout\InitialMailExample.py",
> > line 5, in ?
> >     server = smtplib.SMTP("hstmsg002",25)
> >   File "C:\Python24\lib\smtplib.py", line 244, in __init__
> >     (code, msg) = self.connect(host, port)
> >   File "C:\Python24\lib\smtplib.py", line 307, in connect
> >     (code, msg) = self.getreply()
> >   File "C:\Python24\lib\smtplib.py", line 351, in getreply
> >     raise SMTPServerDisconnected("Connection unexpectedly closed")
> > SMTPServerDisconnected: Connection unexpectedly closed
>
> Well that's useless. You could install a network sniffer
> (http://www.ethereal.com/) and find out what's actually sent over the
> network connection, and where things go wrong.

Have you verified that you are allowed to use SMTP on this server ?
Can you send email via it using outlook express or a similar POP3/IMAP
mail client?

:)


From Pepe.Smythe at gmail.com  Thu Sep  7 05:08:49 2006
From: Pepe.Smythe at gmail.com (Super Spinner)
Date: 7 Sep 2006 02:08:49 -0700
Subject: IronPython 1.0 released today!
In-Reply-To: <mailman.38.1157488049.5279.python-list@python.org>
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <1157620129.034314.311100@m79g2000cwm.googlegroups.com>

Congrats on reaching 1.0, Jim.

BTW, here's a John Udell screencast of Jim demo'ing IronPython.  Among
other things, it shows IronPython integrating with Visual Studio,
Monad, C#, VB.NET, and WPF.  It's a great video.
http://weblog.infoworld.com/udell/2006/08/30.html#a1515



From tim.peters at gmail.com  Fri Sep 15 20:12:19 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Fri, 15 Sep 2006 20:12:19 -0400
Subject: min() & max() vs sorted()
In-Reply-To: <1158360690.311434.208840@p79g2000cwp.googlegroups.com>
References: <1158280516.219493.61600@p79g2000cwp.googlegroups.com>
	<mailman.113.1158281793.10491.python-list@python.org>
	<1158360690.311434.208840@p79g2000cwp.googlegroups.com>
Message-ID: <1f7befae0609151712k6035163ewecb65cf77ab07c1f@mail.gmail.com>

[MRAB]
>>> Some time after reading about Python 2.5 and how the built-in functions
>>> 'min' and 'max' will be getting a new 'key' argument, I wondered how
>>> they would treat those cases where the keys were the same, for example:
>>>
>>> L = ["four", "five"]
>>> print min(L, key = len), max(L, key = len)
>>>
>>> The result is:
>>>
>>> ('four', 'four')

[Tim Peters]
>> min() and max() both work left-to-right, and return the minimal or
>> maximal element at the smallest index.

[MRAB]
> It doesn't say that in the documentation.

Right, the /language/ doesn't define anything about which specific
minimal or maximal element is returned.  Since you specifically
mentioned Python 2.5, I figured you were asking about CPython -- which
has always behaved in the way I explained.

>>> I would've thought that min(...) should return the same as
>>> sorted(...)[0] (which it does)

>> It does, but only because Python's sort is stable, so that minimal
>> elements retain their original relative order.  That implies that the
>> minimal element with smallest original index will end up at index 0
>> after sorting.

>>> and that max(...) should return the same as sorted(...)[-1] (which
it doesn't).

>> Right -- although I don't know why you'd expect that.

> Strings have index(), find(), etc which work left-to-right and
> rindex(), rfind(), etc which work right-to-left.
>
> Lists have index() but not rindex().
>
> I just thought that if min() and max() work left-to-right then for
> completeness there should also be rmin() and rmax(); alternatively,
> min() should return sorted()[0] and max() should return sorted()[-1]
> for symmetry (my personal preference).

If you were to make either of those a feature request, I don't expect
they'd gain traction -- I expect "who cares?" would be the common
challenge, and "I do" wouldn't silence it ;-)  Compelling use cases
sometimes work to get a new feature, but "completeness" or "symmetry"
almost never do on their own (they function more as sanity checks on
proposed solutions to use cases).


From sjmachin at lexicon.net  Mon Sep 18 18:15:14 2006
From: sjmachin at lexicon.net (John Machin)
Date: 18 Sep 2006 15:15:14 -0700
Subject: Which date will it be 'over x days'?
In-Reply-To: <1158616246.298384.185630@i3g2000cwc.googlegroups.com>
References: <1158616246.298384.185630@i3g2000cwc.googlegroups.com>
Message-ID: <1158617714.496390.182940@i42g2000cwa.googlegroups.com>

cyberco wrote:
> I must be overlooking something since I can't find a simple way to
> calculate which date it will be over, say, 9 days. I checked the
> datetime, time and calendar modules, but none of them seem to have a
> function to calculate the time offset.

I suppose that it depends on your thresholds for "simple" and "seem"
but datetime.timedelta() does it for me:

| >>> import datetime
| >>> datetime.date.today()
| datetime.date(2006, 9, 19)
| >>> datetime.date.today() + datetime.timedelta(days=9)
| datetime.date(2006, 9, 28)
| >>>

http://docs.python.org/lib/datetime-timedelta.html

HTH,
John



From steve at holdenweb.com  Thu Sep 28 16:44:24 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 21:44:24 +0100
Subject: preemptive OOP?
In-Reply-To: <JiWSg.50$1n3.567@news.tufts.edu>
References: <e9USg.47$1n3.432@news.tufts.edu>	<451c1a6d$1@nntp.zianet.com>	<xkVSg.49$1n3.537@news.tufts.edu>	<mailman.904.1159473884.10491.python-list@python.org>
	<JiWSg.50$1n3.567@news.tufts.edu>
Message-ID: <efhc5m$l91$1@sea.gmane.org>

John Salerno wrote:
> Steve Holden wrote:
> 
> 
>>However, if you want to simplify the code, you could start by saying
>>
>>    myNotebook = wx.Notebook
>>
> 
> 
> I don't understand. Is that just a name change in the code?

Let me put it this way: what doesn't it do that your code did?

You're right, it *is* just a name change in the code, but if you *do* 
later want to specialise the notebook behaviour you can replace the 
assignment with a class definition without changing any of your other code.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Tue Sep 19 11:05:04 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 19 Sep 2006 17:05:04 +0200
Subject: why a main() function?
In-Reply-To: <4naeceF9c3hpU2@uni-berlin.de>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com><1158615492.835407.239900@e3g2000cwe.googlegroups.com>	<4na377F9esroU1@uni-berlin.de>	<mailman.264.1158666512.10491.python-list@python.org>
	<4naeceF9c3hpU2@uni-berlin.de>
Message-ID: <eep0uv$261$1@sea.gmane.org>

Diez B. Roggisch wrote:

> Interesting. How is the index computed? I would have assumed that locals()
> is somehow used, which is a dicht.
> 
> I can imagine enumerating left-hand-side names and trying to replace their
> occurence with the index, falling back to the name if that is not
> possible/the index isn't found. Does that come close?

yes, but there is no fallback: if a name inside a function is local or 
not is decided once and for all by the compiler, using static analysis.
see:

     http://pyref.infogami.com/naming-and-binding

</F>



From deets at nospam.web.de  Mon Sep 25 05:21:21 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 11:21:21 +0200
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
	<4nocq8Fb434vU1@uni-berlin.de> <7xzmcpyli6.fsf@ruckus.brouhaha.com>
Message-ID: <4nplchFbaoisU1@uni-berlin.de>

Paul Rubin wrote:

> "Diez B. Roggisch" <deets at nospam.web.de> writes:
>> There is a good daemonization recipe on activstate:
>> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012
> 
> That is worth reading, including the long comment thread.

Yeah, it is somewhat disappointing that the version in the comments is not
the one upfront. I should have already mentioned that, thanks for doing
that.


Diez


From tdelaney at avaya.com  Mon Sep 25 19:24:39 2006
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Tue, 26 Sep 2006 09:24:39 +1000
Subject: does anybody earn a living programming in python?
Message-ID: <2773CAC687FD5F4689F526998C7E4E5FF1EA39@au3010avexu1.global.avaya.com>

walterbyrd wrote:

> If so, I doubt there are many.
> 
> I wonder why that is?

Well, I'm not qualified to analyse the reasons for your doubts, but I'd
guess it's because you have preconceived notions.

Tim Delaney


From tim at tdw.net  Tue Sep  5 17:09:40 2006
From: tim at tdw.net (Tim Williams)
Date: Tue, 5 Sep 2006 22:09:40 +0100
Subject: Removing from a List in Place
In-Reply-To: <9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>
References: <B51587638.196.5201.1@mx-extra>
	<9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>
Message-ID: <9afea2ac0609051409q6a083503sc2003669d0885c3f@mail.gmail.com>

On 05/09/06, Tim Williams <tim at tdw.net> wrote:
> On 05/09/06, Gregory Pi?ero <gregpinero at gmail.com> wrote:> I'm going
> to assume that it's supposed to work like this, but could
> > someone tell me the reasoning behind it?  I.E. why is 3 skipped?
> >
> > >>> alist=[1,2,3]
> > >>> for item in alist:
> > ....    print item
> > ....    if item==2:
> > ....            alist.remove(item)
> > ....
> > 1
> > 2
> > >>>
>
>
> >
> > Bonus Question:
> > Can we make this behave more intuitiviely in Python 3000?
>
> It does already,  you just haven't grasped list fully yet :):)
>
> when you remove 2 from alist,  the list becomes length 2, there is no
> longer a 3rd item in the list to iterate over.
>
> Try this
>
> > >>> alist=[1 ,2 ,3, 4]
> > >>> for item in alist:
> > ....    print item
> > ....    if item==2:
> > ....            alist.remove(item)
> > ....    print alist
>

sorry,  I meant to offer an alternative also

in yourgiven case you can iterate over a copy of the list like this:

>>> for item in alist[:] :


From fredrik at pythonware.com  Tue Sep 26 11:26:19 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 17:26:19 +0200
Subject: Extend file type
In-Reply-To: <1159283661.937621.313690@d34g2000cwd.googlegroups.com>
References: <1159283661.937621.313690@d34g2000cwd.googlegroups.com>
Message-ID: <efbgqq$a46$1@sea.gmane.org>

abcd wrote:

> Any ideas what methods the stdout (and I guess stderr) of Popen objects
> from subprocess call?

the external process only sees OS-level file handles (the number you get 
from the fileno() method on your file objects), not Python objects.  no 
matter how you override things in your process, you cannot make your OS 
pretend that the other process is written in Python...

</F>



From paul at boddie.org.uk  Fri Sep 29 18:28:49 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 29 Sep 2006 15:28:49 -0700
Subject: creating a small test server on my local computer
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
	<mailman.973.1159558314.10491.python-list@python.org>
Message-ID: <1159568929.817980.141580@b28g2000cwb.googlegroups.com>

Tim Chase wrote:
>
> Well, you could investigate WebStack:

[...]

> The documentation is a bit terse, and lacking in some areas, but
> a little debugging output goes a long way toward diagnosing
> problems with your code.

Suggestions for improvement are very welcome! And I do value the
expertise of WebStack users in improving the experience of developing
with WebStack. Right now, it seems like I have total control over the
framework, but if people want to contribute things on a more democratic
footing, I'd be happy to look for project hosting somewhere:
recommendations on that topic would be welcome, of course.

> In my experience, it takes targeting WebStack's abstraction
> framework rather than any of the particular platforms, but the
> portability is unbeatable.
>
> Just a satisfied customer of Boddie's work,

I'm *very* pleased to hear it! :-)

I suppose I should get on with finishing off the next release, which is
just a bunch of fixes and possibly some Django support.

Paul



From bmearns at coe.neu.edu  Thu Sep 14 09:09:11 2006
From: bmearns at coe.neu.edu (bmearns)
Date: 14 Sep 2006 06:09:11 -0700
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
Message-ID: <1158239351.008092.170070@i42g2000cwa.googlegroups.com>

Thanks for all the responses. I understood what the PORT command was
for, but I've been seeing alot of doc online that only mentions going
outbound on port 20 for data connections, so I thought maybe that was
my problem.

Sorry if this is the wrong spot to follow up on this not-so-much-python
matter. Does anyone know of an appropriate news group?
I'm trying to get through a router and Norton Internet security, using
my homebrewed python FTP server and Internet Explorer as my client
(I've also tried microsoft's FTP command line client). I'm able to go
back and forth on the command socket, no problem, but after the client
issues a PORT, I try to connect to it, and time out. I'm becoming
increasingly convinced that it's a firewall/router issue because if I
connect to my server as localhost, instead of my outside IP address, I
can connect fine.

I've tried disabling Internet security, but that doesn't help. I
suspect the problem is port forwarding from the router, but I don't
know what the port numbers will be, so how can I set up forwarding?

Any help is greatly appreciated. I've been banging my head against the
wall for hours.

-Brian



From aahz at pythoncraft.com  Tue Sep 26 11:16:33 2006
From: aahz at pythoncraft.com (Aahz)
Date: 26 Sep 2006 08:16:33 -0700
Subject: QOTW (was Re: does anybody earn a living programming in python?)
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
	<mailman.624.1159249638.10491.python-list@python.org>
Message-ID: <efbg8h$c6j$1@panix3.panix.com>

In article <mailman.624.1159249638.10491.python-list at python.org>,
Fredrik Lundh  <fredrik at pythonware.com> wrote:
>
>well, if you're only watching mtv, it's easy to think that there's 
>obviously not much demand for country singers, blues musicians, British 
>hard rock bands, or melodic death metal acts.

Any other votes for this being QOTW?
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From gardner at networknow.org  Tue Sep 12 18:53:01 2006
From: gardner at networknow.org (Gardner Pomper)
Date: Tue, 12 Sep 2006 18:53:01 -0400
Subject: pyLinda?
Message-ID: <42d22dbf0609121553j2b7a16c4kb397ad8f05ed54f4@mail.gmail.com>

Hi,

I have been lurking and see that there are a number of people interested in
pyLinda. I thought that I might post some very basic questions here that I
don't seem to have found on the web site. I expect the answers are there, so
if you could post a url to the page that answers them, that would be great.

It sounds like pyLinda runs a server process and stores tuples in it. How
does this work with multiple machines? One server per machine? Do you
connect to your local server and then that server has some sort of directory
that tells it which server holds the object you are looking for? Or are the
servers synchronized somehow?

That should get me started. As many others here, I don't have an immediate
project for pyLinda, but I would like to understand what it offers better so
that I can identity an appropriate project if one appears.

- Gardner
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From onurb at xiludom.gro  Wed Sep  6 04:41:50 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 06 Sep 2006 10:41:50 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157477207.223616.210780@h48g2000cwc.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
Message-ID: <44fe89d0$0$31634$626a54ce@news.free.fr>

mensanator at aol.com wrote:
(snip)
> But shouldn't a significant feature like that be explained
> in the Python manuals? 

Why should it ? It's a SQLite feature, not a Python one.

> Why should I go dig up Sqlite
> FAQs to learn what should have been in the manuals?

Why should you read the manuals at all then ?


>> Live with it or use a real RDBMS.
> 
> I don't mind living with it as long as it's documented.

It is. In SQLite manual. Or do you hope the Python manual to also fully
document PostgreSQL, MySQL, Oracle, Apache, Posix, Win32 etc ?


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From cecilia at particle.kth.se  Wed Sep  6 06:37:27 2006
From: cecilia at particle.kth.se (Cecilia Marini Bettolo)
Date: Wed, 6 Sep 2006 12:37:27 +0200 (CEST)
Subject: sci-py error
Message-ID: <Pine.LNX.4.58.0609061234400.8651@gluon.particle.kth.se>

Hi!
When installing scipy I get this error:

python setup.py install
Traceback (most recent call last):
  File "setup.py", line 55, in ?
    setup_package()
  File "setup.py", line 28, in setup_package
    from numpy.distutils.core import setup
  File "/usr/local/lib/python2.4/site-packages/numpy/__init__.py", line 
40, in ?
    import linalg
  File "/usr/local/lib/python2.4/site-packages/numpy/linalg/__init__.py", 
line 4, in ?
    from linalg import *
  File "/usr/local/lib/python2.4/site-packages/numpy/linalg/linalg.py", 
line 25, in ?
    from numpy.linalg import lapack_lite
ImportError: /usr/lib/libblas.so.3: undefined symbol: e_wsfe

Can anybody help me?

Thanks, Cecilia


From steve at holdenweb.com  Wed Sep 13 22:22:05 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 22:22:05 -0400
Subject: Python to JavaScript Compiler? Anyone written such a beast?
In-Reply-To: <dM2Og.1751$IA.558@newssvr11.news.prodigy.com>
References: <dM2Og.1751$IA.558@newssvr11.news.prodigy.com>
Message-ID: <eeaeb2$f2$1@sea.gmane.org>

kenneth.m.mcdonald at sbcglobal.net wrote:
> Of course, I'm not talking about something that would transform
> any Python code into semantically JavaScript code, but simply
> something that would analyze a "restricted" Python source file,
> and spit out equivalent JavaScript. The big advantage (as far
> as I'm concerned) is that one could make use of some of the
> syntactic shortcuts that JavaScript doesn't offer, that the Python
> syntax checker generally does a better job than the JS one, and
> (perhaps most importantly) this could be configured to put in 'instrumentation',
> such as checks to make sure than an attempt to access an undefined
> attribute actually throws an error.
> 
> Color me curious,
> Ken
> 
Take a look at the PyPy project, which has produced a JavaScript 
back-end (thugh I suspect it's more of a curiosity than a practical 
solution). It might suit your needs, though, and they've had a Summer of 
Code project going on it.

     http://codespeak.net/pypy/dist/pypy/doc/news.html

and specifically

     http://codespeak.net/pypy/dist/pypy/doc/getting-started.html

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Tue Sep 26 12:41:35 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 12:41:35 -0400
Subject: identifying new not inherited methods
In-Reply-To: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
Message-ID: <efbl6d$sel$1@sea.gmane.org>

malkarouri at gmail.com wrote:
> Hi,
> 
> I am writing a library in which I need to find the names of methods
> which are implemented in a class, rather than inherited from another
> class. To explain more, and to find if there is another way of doing
> it, here is what I want to do: I am defining two classes, say A and B,
> as:
> 
> class A(object):
>     def list_cmds(self):
>         'implementation needed'
>         ?
>     def __init__(self):
>     ... (rest of class)
> 
> class B(A):
>     def cmd1(self, args):
>         pass
>     def cmd2(self, args):
>         pass
> 
> I need an implementation of list_cmds in A above so that I can get a
> result:
> 
> 
>>>>b=B()
>>>>b.list_cmds()
> 
> ['cmd1','cmd2']                    #order not important
> 
> I will be happy if anybody can point to me any way of doing it, using
> class attributes, metaclasses or otherwise. What I don't want to do is
> modifying class B, which contains just the cmds, if possible.
> 
> Many thanks in advance.
> 
$ cat test01.py
class A(object):
     def list_cmds(self):
         """return callable attributes from
            subclasses not present in main class."""
         Amethods = [m for m in dir(A) if callable(getattr(A, m))]
         return [m for m in dir(self.__class__)
                 if callable(getattr(self.__class__, m))
                    and m not in Amethods]
     def __init__(self):
         pass

class B(A):
     def cmd1(self, args):
         pass
     def cmd2(self, args):
         pass

print "A additionals:", A().list_cmds()
print "B additionals:", B().list_cmds()


sholden at bigboy ~
$ python test01.py
A additionals: []
B additionals: ['cmd1', 'cmd2']

sholden at bigboy ~
$

Hope this helps.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From cartercc at gmail.com  Wed Sep 27 14:51:16 2006
From: cartercc at gmail.com (cartercc at gmail.com)
Date: 27 Sep 2006 11:51:16 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159375876.352551.22600@m7g2000cwm.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159359326.496431.293370@i3g2000cwc.googlegroups.com>
	<1159375876.352551.22600@m7g2000cwm.googlegroups.com>
Message-ID: <1159383076.926175.55510@m73g2000cwd.googlegroups.com>

sjdevnull at yahoo.com wrote:
> At the site I'm working on, you'd see a URL like
> http://www.whatever.com/login or http://www.whatever.com/boards?id=131
> -- how would you count them?  Such (extensionless) URLs are far more
> common in the Python, Ruby, and Java world in my experience than the
> PHP, Perl, and ASP world, so my first instinct looking at your numbers
> is to believe they're just biased toward languages that more often put
> the extension in the URL.

Yeah. CGI is more than Perl, CGI also includes TCL and Python, and
perhaps some others. In my limited JSP developments, we didn't use file
extensions.

I don't think you can use any measure as an accurate yardstick, but
rather as an impressionistic canvas. Just because there are five times
as many .cgi extensions as .jsp extensions doesn't mean that Perl is
five times more popular that Java. Also, web apps tend to stick around,
and we don't have a sure way to gauge the age of these pages, so it
could be that, in the last year, the ration of JSP to CGI pages is five
to one in favor of JSP.

To some extent, the popularity of technologies is driven by the
available resources. If there are many more Java programmers than Perl
programmers, then Java wil appear to be more popular, and vice versa. I
know that colleges and universities teach Java in their CS and IS
courses, and they don't teach Perl.

CC



From ty.2006 at yahoo.com  Sat Sep 23 21:39:58 2006
From: ty.2006 at yahoo.com (T)
Date: 23 Sep 2006 18:39:58 -0700
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<n7YQg.3965$IA.3432@newssvr11.news.prodigy.com>
Message-ID: <1159061998.460873.321180@m73g2000cwd.googlegroups.com>


Umm...I was hoping for something simpler and more straight forward.  Is
there a module that would be useful for this type of thing?



From MonkeeSage at gmail.com  Tue Sep 12 01:50:45 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 11 Sep 2006 22:50:45 -0700
Subject: How to get the "longest possible" match with Python's RE module?
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
Message-ID: <1158040245.635848.169000@h48g2000cwc.googlegroups.com>

MonkeeSage wrote:
> So, it seems they are all broken, or python is correct as well.

Aha, sorry about that Licheng (re: Tim's post). I guess "broken"
depends on if you are expecting perl-compatible behavior or otherwise.
I have my own scripts I use to do (f)grep and sed-like operations, so I
almost never use those programs and forgot about the different pattern
semantics (part of the reason I made my own scripts).

Regards,
Jordan



From jpgreenwald at gmail.com  Sun Sep  3 04:01:42 2006
From: jpgreenwald at gmail.com (jpgreenwald at gmail.com)
Date: 3 Sep 2006 01:01:42 -0700
Subject: User defined functions through Automation in Excel 2003
Message-ID: <1157270501.997826.279790@74g2000cwt.googlegroups.com>

Hi all,

Im trying to create user defined functions (ones that you can use in
the cells of excel) in python.  I know that its a ...dumb... thing to
do since its a lot easier in other languages (vb,c#, vc..etc) but Im
stuck on seeing if I can get this to work.  Currently I have written a
simple script:

class jtest:
    _public_methods_ = ['Add2']
    _reg_clsid_ = "{27A888AA-B5DB-44BE-BBA7-DECF3A1DF861}"
    _reg_progid_ = "jtest.Excel"

    def Add2(x, y):
        return x+y

and compiled it to a dll with py2exe and created the registry entry in

HKCR\CLSID\{xxxGUIDxxx}\Programmable\

so that excel can pick it up and it loads no problem when selecting it
from the automation add-in menu.  However thats all it does.  I cant
seem to be able to call the function or do anything with it.  Im sure
there is a lot more thats needed than what im doing but documentation
is scarce.  Thanks for any help or insight that can be offered.

-Jesse



From vbfoobar at gmail.com  Fri Sep  8 11:40:36 2006
From: vbfoobar at gmail.com (vbfoobar at gmail.com)
Date: 8 Sep 2006 08:40:36 -0700
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
Message-ID: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>

Hello

I am looking for python code that takes as input a list of strings
(most similar,
but not necessarily, and rather short: say not longer than 50 chars)
and that computes and outputs the python regular expression that
matches
these string values (not necessarily strictly, perhaps the code is able
to determine
patterns, i.e. families of strings...).

Thanks for any idea



From sation at web.de  Mon Sep 25 08:51:47 2006
From: sation at web.de (Sven Ehret)
Date: Mon, 25 Sep 2006 14:51:47 +0200
Subject: Newbie question: PyQt & Form::init()
Message-ID: <ef8jbm$l8i$1@newsreader2.netcologne.de>

Hello List,

I am trying to learn Python and followed the tutorial at
http://www.cs.usfca.edu/~afedosov/qttut/. Being happy that it works, I am
now trying to do my own project, but I am having problems with
initialization of my form.

I want to automatically fill a couple of comboboxes upon starting the
program. I read on the net that I simply have to add a function
called ?Form1.Init()? with the content I wish to have executed at start
time. However, it never gets executed, so it seems. When I re-write the
application to have the code executed at the press of a button, it works.
What am I doing wrong?

Sorry for my newbieness ;)


From horpner at yahoo.com  Fri Sep 22 23:24:08 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: Sat, 23 Sep 2006 03:24:08 GMT
Subject: returning None instead of value: how to fix?
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
	<1158956835.466475.162860@i42g2000cwa.googlegroups.com>
	<1158958798.273728.3620@m7g2000cwm.googlegroups.com>
Message-ID: <sN1Rg.1204$5i7.700@newsreading01.news.tds.net>

On 2006-09-22, sam <python.sam at googlemail.com> wrote:
>> Missing a return on the last line is likely your immediate
>> problem.
>
> thanks to everyone for pointing this out. obviously, i had not
> understood what was actually involved in a recursive call. i
> have corrected it as suggested and it works fine now.
>
> thanks again for all the answers. it boggles the mind that one
> can have access to this almost immediate help at no charge.

But there is a charge. You're charged with asking your question
well, and you're charged with making some obvious effort to solve
the problem on your own. Those who take the trouble, as you did,
usually get excellent free help.

It's not out of the kindness of our hearts that we help. Heck, I
don't know what it is. Probably I just like reading my own drivel
on the internet and occassionally helping others is a good
excuse.

-- 
Neil Cerutti


From paddy3118 at netscape.net  Thu Sep 28 21:10:44 2006
From: paddy3118 at netscape.net (Paddy)
Date: 28 Sep 2006 18:10:44 -0700
Subject: windev vs python SOS
In-Reply-To: <mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
Message-ID: <1159492244.834784.76380@h48g2000cwc.googlegroups.com>


My french is attrocious so I got Michels original post machine
transated.
I liked what Michel was saying, maybe others would like to share:

Hello! As you are French, you will coprendras me. Then: - windev is
closed, and protected by dongles. Result: dongle lost, broken down, or
flown, a licence should be repurchased (it arrived to a friend) - the
language of windev is much less advanced than Python. And, when I say
much, it is weak... Python has enormous possibilities in procedural
programming, in Directed Object, and, even, in functional programming.
- the internal structure of Python is extraordinary. Really. - Python
is very easy to learn. There exists much of resources, even in French,
on Internet, in books, etc. - Python is a stable language, with very
very few bugs/probl?mes. On this point, windev mark seriously the
step. On certain forums devoted to windev, the number of bugs announced
was frightening. - the bookshops available for Python cover a spectrum
much broader than those available for windev - the data bases
integrated into windev are from the old engine "hyperfile", too much
limited. With Python, one can choose the DBMS which one wants, without
too concern. Since SQL-lite, until Oracle (XE or other), one can assume
all the levels of power necessary. - with Python, one can make
multi-threading, distributed, Web applications, consoles, invisible
(services), waiters COM, develop interfaces, or of use of all ready,
work on network, control industrial plants, etc etc. - I do not use the
"free one" as argument, except for a point: if PC-SOFTWARE (editor of
windev) has, one day of large difficulties, the product could
disparaitre well suddenly, which is not the case of Python, maintained
by a community. However, few years ago, this box had, precisely, of
financial important problems. The large strong point of windev, it is a
very aggressive marketing. Moreover, if you want to eat and drink with
the eye, will follow the presentations. Before last point: you could
have put your message in the French newsgroup on Python. Last point: if
somebody wants to translate this message, it has my entire agreement.
-- @-greetings Michel Archstone



From claird at lairds.us  Fri Sep 15 09:34:18 2006
From: claird at lairds.us (Cameron Laird)
Date: Fri, 15 Sep 2006 13:34:18 +0000
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (Sep 14)
References: <eecma1$v80$1@lairds.us>
Message-ID: <qnmqt3-rao.ln1@lairds.us>

In article <eecma1$v80$1 at lairds.us>,
Jack Diederich <python-url at phaseit.net> wrote:
			.
			.
			.
>    More than you ever wanted to know about the types of regular expression
>    engines and their history.
>         
>http://groups.google.com/group/comp.lang.python/browse_thread/thread/cd20b4cabc6fe26/
			.
			.
			.
http://groups.google.com/group/comp.lang.python/browse_thread/thread/cd20b4cabc6fe264/ 

My profound apologies for sending out the wrong link.  Folks should have
a proper opportunity to read this topic, as I think it interests many.


From steve at holdenweb.com  Tue Sep 26 02:59:04 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 02:59:04 -0400
Subject: QuoteSQL
In-Reply-To: <ef9nmi$snj$2@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<mailman.560.1159188345.10491.python-list@python.org>
	<ef9nmi$snj$2@lust.ihug.co.nz>
Message-ID: <efaj26$qna$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.560.1159188345.10491.python-list at python.org>, Steve
> Holden wrote:
> 
> 
>>When you use the DB API correctly and paramterise your queries you still
>>need to quote wildcards in search arguments, but you absolutely
>>shouldn't quote the other SQL specials.
>>
>>That's what parameterised queries are for on the first place...
> 
> 
> So you're suggesting I quote the wildcards, then rely on autoquoted
> parameters to handle the rest? Unfortunately, that's stupid mistake number
> 2.

Ah, so your quoting function will deduce the context in which arguments 
intended for parameter substitution in the query will be used? Or are 
you suggesting that it's unwise to rely on autoquoted parameters? That 
could have a serious impact on the efficiency of some repeated queries.

I find it difficult to take your argument seriously. Are you doing this 
just to be obnoxious, or do you have a genuine point to make?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jjl at pobox.com  Fri Sep  8 16:41:56 2006
From: jjl at pobox.com (John J. Lee)
Date: Fri, 08 Sep 2006 20:41:56 GMT
Subject: Javadoc style python manual?
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
	<1157733112.626057.74610@e3g2000cwe.googlegroups.com>
Message-ID: <87hcziytt7.fsf@pobox.com>

"Paul Boddie" <paul at boddie.org.uk> writes:
[...]
> Better usage of the find command could be made, and the resulting
> process occupied over 0.5GB before producing 581MB of API documents on
> disk. The resulting output reveals some major differences between some
> modules and in the quality of the documentation; for example, lots of
> empty docstrings cannot always be explained away by the --parse-only
> mode employed by epydoc in this case.
[...]

Why do you expect to get useful docs that way?  The canonical Python
stdlib docs live in LaTeX files, not in the docstrings.  You may find
some useful bits and pieces in the docstrings too, or you may not.


John


From snowf200807 at gmail.com  Wed Sep  6 01:26:04 2006
From: snowf200807 at gmail.com (snowf)
Date: 5 Sep 2006 22:26:04 -0700
Subject: How to get all the file of a oppoint directory from a FTP
Message-ID: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>

There are no such a method using to download a whole directory  in  the
lib of  ' ftplib '.
thanks for anybody's help!



From andi.clemens at gmx.net  Mon Sep 25 02:23:45 2006
From: andi.clemens at gmx.net (Andi Clemens)
Date: Mon, 25 Sep 2006 08:23:45 +0200
Subject: Daemonizing python
In-Reply-To: <pan.2006.09.24.21.01.54.522795@net.hr>
References: <pan.2006.09.24.21.01.54.522795@net.hr>
Message-ID: <ef7sjn$e45$1@online.de>

Hi,

what is the main difference of running a python program as a daemon or 
as a cronjob?

I have written a program at work that checks all internet connections of 
our failover sites and saves the results in a MySQL-database.
The whole program is made with django (a webframework) so I had to be 
sure that the "checking procedure" is done every 30 minutes.

I used a cronjob for that job, but I don't know if a daemon would be 
better...


NinjaZombie wrote:
> Hi!
> 
> I was wondering if it is possible to turn the current python proccess into
> a unix daemon, but not doing it like this: 
> python myscript.py & 
> but from code programaticaly.
> Thanks.

-- 
homepage: http://www.the-grudge.net
ICQ: 9450091
Skype: thegrudge_2
Mozilla Thunderbird 1.5.0.5
Arch Linux


From theller at python.net  Tue Sep 26 05:48:52 2006
From: theller at python.net (Thomas Heller)
Date: Tue, 26 Sep 2006 11:48:52 +0200
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
Message-ID: <efat24$qie$1@sea.gmane.org>

p.lavarre at ieee.org schrieb:
> Q: The C idea of (pv != NULL) is said most directly in Python ctypes
> how?
> 
> A: We are of course supposed to write something like:
> 
>         def c_not_null(pv):
>                 return (ctypes.cast(pv, ctypes.c_void_p).value != None)
> 
> Yes?
> 
> Working from the doc, me the clueless newbie, I was slow to guess such
> relevant truths as:
> 
> ctypes.c_void_p(0).value == None
> ctypes.c_void_p(0) != ctypes.c_void_p(0)
> 
> Curiously yours, thanks in advance, Pat LaVarre
> 

Generally pointer instances have a False boolean value, so

'if pv: ....'

should work.  Except for c_void_p, c_char_p and c_wchar_p instances.

Thomas



From steve at holdenweb.com  Sun Sep 10 22:29:37 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 03:29:37 +0100
Subject: Looking for the Perfect Editor
In-Reply-To: <7.0.1.0.2.20060909194216.05e73150@rcblue.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<7.0.1.0.2.20060909194216.05e73150@rcblue.com>
Message-ID: <ee2hl7$3dd$1@sea.gmane.org>

Dick Moores wrote:
> At 01:10 PM 9/8/2006, Doug Stell wrote:
> 
>>Try www.TextPad.com. I've used it for years and love it. It
>>understands many programming language constructs and can be taught to
>>understand python so that things show up in color.
> 
> 
> Any tips on how to teach TextPad to understand python?
> 
The procedure is explained in "How do I create a new document class to 
do syntax highlighting?" on page

   http://www.textpad.com/support/faq/config.html

You can download an appropriate .syn file from

   http://www.textpad.com/add-ons/synn2t.html

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Thu Sep 21 06:17:33 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 10:17:33 GMT
Subject: view page source or save after load
In-Reply-To: <mailman.385.1158823634.10491.python-list@python.org>
References: <mailman.373.1158814163.10491.python-list@python.org>	<1158816399.831104.148250@b28g2000cwb.googlegroups.com>
	<mailman.385.1158823634.10491.python-list@python.org>
Message-ID: <1FtQg.3914$6S3.1847@newssvr25.news.prodigy.net>

Gabriel Genellina wrote:
> At Thursday 21/9/2006 02:26, alex23 wrote:
> 
>> page = urllib.urlopen('http://some.address')
> 
> add .read() at the end
> 
>> open('saved_page.txt','w').write(page).close()
> 
> write() does not return the file object, so this won't work; you have to 
> bind the file to a temporary variable to be able to close it.

Strictly speaking, "have to" is not perfectly correct. The ".close()" 
part can simply be eliminated as the file should close via garbage 
collection once leaving the local namespace.

James


From duncan.booth at invalid.invalid  Wed Sep 13 04:08:52 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 13 Sep 2006 08:08:52 GMT
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
Message-ID: <Xns983D5D171AEBduncanbooth@127.0.0.1>

"Delaney, Timothy (Tim)" <tdelaney at avaya.com> wrote:

> Antoon Pardon wrote:
> 
>> This is just an idea of mine, nothing I expect python to adapt.
>> But just suppose the language allowed for words in bold. A word
>> in bold would be considered a reserved word, a word in non bold
>> would be an identifier.
> 
> Exactly how am I supposed to use my text editor to make words bold? Is
> every text editor supposed to understand a "python format" for code?

I guess you would do it the same way other languages have implemented this 
in the past: use bold if your editor supports it and use something else if 
it doesn't.

Algol 68 has the concept that keywords and identifiers with the same 
spelling are distinguished in some way (and if I remember correctly there 
were compiler options that let you specify what sort of stropping you were 
using). There was case stropping: case not otherwise being significant you 
could indicate a reserved word by uppercasing it e.g. BEGIN; or various 
punctuation conventions .begin. 'BEGIN' @begin or your editor might 
indicate reserved words using a different font e.g. bold.

I see wikipedia's entry on stropping says that Atlas Autocode let you strop 
keywords by underlining them using backspace and overstrike. That must have 
been real fun to type.

One of the big advantages of stropping is of course that you don't have to 
print or view source code using the same convention as you used when 
entering the text. So you might use case stropping to type your source code 
in, but then print listings with keywords bolded and lowercased.

So for Python you would have a magic comment similar to how you specify 
encoding to specify the type of stropping in use and your editor would 
recognise the comment and display the file using whichever stropping 
convention you prefer for viewing.

Personally I think a simpler idea to get round clashes of reserved words 
and identifiers would be to adopt something similar to c#'s @ escape. You 
could simply allow the lexer to accept @'something' as an alternative 
spelling for the identifier something, but with no restrictions on the 
characters that such an identifier could contain. so for manipulating html 
you would be able to write:

   element.@'class' = "whatever"

instead of having to call setattr or use some other kludge.

If Python did have a mechanism like this to escape identifiers then you 
could implement stropping completely outside the language: you could have 
an editor which displays keywords in one font and identifiers in another 
(as most editors already do), and then when saving simply escape any 
identifiers which are not otherwise valid. It wouldn't even be a big 
change: the editor could probably guess your intent correctly 99% of the 
time.


From MonkeeSage at gmail.com  Sat Sep 23 20:36:51 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 17:36:51 -0700
Subject: webbrowser module's Firefox support
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
	<1159053936.813103.38840@d34g2000cwd.googlegroups.com>
	<1159056130.721134.145060@m73g2000cwd.googlegroups.com>
	<1159056914.662797.216540@m73g2000cwd.googlegroups.com>
Message-ID: <1159058211.224462.54760@m7g2000cwm.googlegroups.com>

Dustan wrote:
> That didn't work either.

Well, I'm out of ideas. It's also odd that it was being read as
webbrowser.BackgroundBrowser...whatever that is! It should have been
webbrowser.Mozilla.

> Another thing: your fix is only temporary. Is there a way to make it
> work even after I close IDLE? I changed the command you gave me a bit
> so it doesn't get rid of the other paths:
>
> os.environ["PATH"]+=";C:\Program Files\Mozilla Firefox;" # can't
> remember the path for firefox right now...
>
> But either way, it ends up going right back to the previous value after
> I close IDLE.

Yeah, sorry about that, I meant to mention that changes to os.environ
only last for the life of the python process. To set / change
environment variables like PATH permanently, check out this page:
http://www.cims.nyu.edu/systems/platforms/windows/setpath.html

Regards,
Jordan



From toby at tobiah.org  Wed Sep 27 12:20:37 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 09:20:37 -0700
Subject: concat next line with previous
In-Reply-To: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>
References: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>
Message-ID: <451AA4D5.6040703@tobiah.org>

s99999999s2003 at yahoo.com wrote:
> hi
> what is the python way to concat 2 lines eg
> 
> line  1 with some text
> line 2 with some text
> 
> i want to bring line 2 up , such that i get one whole string.
> 
> line  1 with some text line 2 with some text
> 

assuming that the 'lines' have newlines at the end,
maybe:

' '.join(line1[:-1], line2)

or

' '.join(line.replace('\n', ''), line2)

Which covers the case of no newline at the end as well.


-- 
Posted via a free Usenet account from http://www.teranews.com



From bjourne at gmail.com  Fri Sep 29 17:32:42 2006
From: bjourne at gmail.com (=?ISO-8859-1?Q?BJ=F6rn_Lindqvist?=)
Date: Fri, 29 Sep 2006 23:32:42 +0200
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
	<1159515955.553244.74480@i3g2000cwc.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
Message-ID: <740c3aec0609291432t32247839tf4dd97d1a87ba448@mail.gmail.com>

On 9/29/06, Johan Steyn <johan.steyn at gmail.com> wrote:
>  I agree that it is meaningless without a break statement, but I still find
> it useful when I want to determine whether I looped over the whole list or
> not. For example, if I want to see whether or not a list contains an odd
> number:
>
>  for i in list:
>      if i % 2 == 1:
>          print "Found an odd number."
>          break
>  else:
>      print "No odd number found."
>
>  Without the else clause I would need to use an extra variable as a "flag"
> and check its value outside the loop:

You can use generator comprehension:

if (i for i in list if i % 2 == 1):
    print "Found an odd number."
else:
    print "No odd number found."

I *think* any() should also work:

if any(i % 2 == 1 in list):
    ....

And so on. For every use of the for/else clause there exists a better
alternative. Which sums up my opinion about the construct -- if you
are using it, there's something wrong with your code.

-- 
mvh Bj?rn


From dean at llysarad.eliteisp.co.uk  Fri Sep 15 07:42:48 2006
From: dean at llysarad.eliteisp.co.uk (Dean Houghton)
Date: Fri, 15 Sep 2006 12:42:48 +0100
Subject: Experienced UK based developer required
Message-ID: <450a91b5@212.67.96.135>

A software house based in Bristol, UK require an experienced developer to 
maintain and progress our Enterprise Management software suite.  The suite 
is a group of applications used to monitor, manage and alert on all aspects 
of the enterprise infrastructure from the network to application level.  The 
majority of the suite is developed using Python.



For more information please see http://www.rms.co.uk/careers.htm ,call Phil 
Golder / Dean Houghton on +44 (0) 1454 281265 or email jobs at rms.co.uk




From python.list at tim.thechases.com  Thu Sep 28 10:40:40 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 28 Sep 2006 09:40:40 -0500
Subject: remove the last character or the newline character?
In-Reply-To: <GUQSg.43$1n3.209@news.tufts.edu>
References: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
	<GUQSg.43$1n3.209@news.tufts.edu>
Message-ID: <451BDEE8.7020705@tim.thechases.com>

>> Does python provide any function that can remove the newline character
>> from a string if it exists?
> 
>  >>> fileName = 'Perfect Setup.txt\n'
>  >>> fileName.strip()
> 'Perfect Setup.txt'
>  >>>
> 
> Or you can use lstrip() or rstrip() to remove just the left or right side.

Just a caveat with the non-qualified strip/rstrip/lstrip...it 
will remove *all* whitespace, so if, for some reason, it's 
significant, and you only want to remove newlines, you have to 
specify it:

 >>> s = ' some text \t\n'
 >>> s.strip()
'some text'
 >>> s.rstrip()
' some text'
 >>> s.rstrip('\n')
' some text \t'

As the OP was talking about file-names, the use of 
initial/terminal spaces is allowable (albeit imprudent), 
depending on your platform, so one may or may not want to strip 
them off.

Fortunately, as in many other areas, Python offers the 
flexibility in an easy-to-use way, and comes with sensible defaults.

-tkc






From sebastien.ramage at gmail.com  Mon Sep 25 06:02:08 2006
From: sebastien.ramage at gmail.com (=?iso-8859-1?q?S=E9bastien_Ramage?=)
Date: 25 Sep 2006 03:02:08 -0700
Subject: PyOpenGL pour python 2.5 ???
In-Reply-To: <4517A3E6.20106@xiludom.gro>
References: <1159175328.038789.96980@i3g2000cwc.googlegroups.com>
	<4517A3E6.20106@xiludom.gro>
Message-ID: <1159178528.207890.242410@i42g2000cwa.googlegroups.com>

oh!
sorry, I made some search on comp.lang.python and fr.comp.lang.python
and finally I forgot where I was...

My question is :
how use pyopengl with python 2.5 ??
it seems that pyopengl was stop on 2005

I'm on windows and I've not tools to recompile pyopengl for python 2.5
(thinking recompilation is the only things)

Somebody can help me?

Seb





Bruno Desthuilliers a ?crit :

> S?bastien Ramage wrote:
> > Bonjour ? tous,
>
>
> Hi S?bastien.
>
> Wrong newsgroup, I'm afraid - either repost here in english, or post to
> fr.comp.lang.python...
>
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in 'onurb at xiludom.gro'.split('@')])"



From bearophileHUGS at lycos.com  Thu Sep 21 18:02:47 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 21 Sep 2006 15:02:47 -0700
Subject: Tkinter button not working as expected
In-Reply-To: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>
References: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>
Message-ID: <1158876167.713262.235980@d34g2000cwd.googlegroups.com>

vagrantbrad at yahoo.com wrote:
> I've created a short test program that uses tkFileDialog.askdirectory
> to help the user input a path into a tk entry widget.  The problem I'm
> having is that when I run the code as listed below, the getPath
> function is called when the program initially runs, not when the button
> is pressed.
[...]
> what am I doing wrong?

Recently I've done a stupid error with a callback (probably I was
sleeping), so I try again. Note many little changes that I belive
improve your program:

import Tkinter as tk
import tkFileDialog

class App(tk.Frame):
    def __init__(self, master):
        tk.Frame.__init__(self, master)
        self.pack()

        self.entrytxt = tk.StringVar()
        entry = tk.Entry(self, textvariable=self.entrytxt)
        entry.pack(side=tk.LEFT)

        button = tk.Button(self, text="Select", fg="red",
command=self.getPath)
        button.pack(side=tk.LEFT)

    def getPath(self):
        dirPath = tkFileDialog.askdirectory(initialdir="c:/")
        self.entrytxt.set(dirPath)
        print dirPath

root = tk.Tk()
app = App(root)
root.mainloop()

Bye,
bearophile



From apardon at forel.vub.ac.be  Thu Sep 28 03:54:04 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 07:54:04 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<E8vSg.384$5o5.203@tornado.texas.rr.com>
	<pan.2006.09.27.14.32.53.618686@REMOVE.THIS.cybersource.com.au>
Message-ID: <slrnehmvss.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-27, Steven D'Aprano <steve at REMOVE.THIS.cybersource.com.au> wrote:
> On Wed, 27 Sep 2006 13:37:40 +0000, Paul McGuire wrote:
>
>> Here's a little more refined version of my previous post:
>> 
>> class StubbornInt(int):
>>     def invariantOp(self,other):
>>         return self
>>     __add__ = invariantOp
>>     __sub__ = invariantOp
>
> [snip rest of code]
>
>> import sys
>> Top = StubbornInt(sys.maxint)
>
> Top shouldn't need to depend on a specific integer value, but then it is
> easy enough to subclass StubbornInt.
>
> However, there is a more serious problem with your definition of Top:
>
>>>> Top > sys.maxint+1
> False
>
> But Top is supposed to bigger than everything, right?
>
> Okay, let's fix it:
>
> class FixedTop(StubbornInt):
>     def __init__(self):
>         super(FixedTop, self).__init__(sys.maxint)
>         self.name = 'Top'
>     def _bigger(self, other):
>         # Top is bigger than everything
>         return True
>     def _smaller(self, other):
>         # Top is smaller than nothing
>         return False
>     __lt__ = __le__ = _smaller
>     __gt__ = __ge__ = _bigger
>
>
> Let's test it out:
>
>>>> Top = FixedTop()
>>>> Top > 45
> True
>>>> Top > sys.maxint
> True
>>>> Top > 2L**512
> True
>>>> Top > None
> True
>>>> Top > "hello"
> True
>
>
> So far so good.
>
> However, the downside of rolling your own Top is the risk that one day
> you'll have something like this:
>
> class Funny:
>     def __init__(self, name):
>         self.name = name
>     def __str__(self):
>         return self.name
>     def __gt__(self, other):
>         return len(str(self)) > len(str(other))
>
> and then you'll have problems:
>
>>>> bottom = Funny("Bottom")
>>>> Top > bottom
> True
>>>> bottom > Top
> True
>
> As far as I can see, the only way to avoid edge cases like this is for Top
> (and Bottom) to be built-ins that are special-cased by Python.

An other problem is that if you roll your own, they wont be accepted in
a lot of buitins where they would make sense. Take itertools.repeat as
it is now and I understand correctly there are two possibilities.

1) Your extreme values are not a subclass of int, then you won't be able
to use them as a times arguments.

2) Your extreme values are a subclass of int, then they will somehow
have an int value and this int value will be used, so that the repeat
won't be an infinite loop.

-- 
Antoon Pardon


From moqtar at gmail.com  Fri Sep 29 06:54:26 2006
From: moqtar at gmail.com (Kirt)
Date: 29 Sep 2006 03:54:26 -0700
Subject: File I/O
In-Reply-To: <1159526934.077334.69080@i42g2000cwa.googlegroups.com>
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
Message-ID: <1159527266.136842.49640@b28g2000cwb.googlegroups.com>


jimburton wrote:
> Kirt wrote:
> > Hi! I need some help in file I/O
> >
> > I have an xml file..
> [snip]
> See http://diveintopython.org/xml_processing/

i dont wanna parse the xml file..

Just open the file as:

f=open('test.xml','a')

and write a line "<Body2>abc</Body2>" before  tag </Top?



From pwatson at redlinepy.com  Sat Sep 30 16:07:40 2006
From: pwatson at redlinepy.com (Paul Watson)
Date: Sat, 30 Sep 2006 15:07:40 -0500
Subject: PyXML not supported, what to use next?
Message-ID: <4o814eFdebrhU1@individual.net>

It would appear that xml.dom.minidom or xml.sax.* might be the best 
thing to use since PyXML is going without support.  Best of all it is 
included in the base Python distribution, so no addition hunting required.

Is this right thinking?  Is there a better solution?


From george.sakkis at gmail.com  Tue Sep 26 10:18:48 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 07:18:48 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
	<1159278999.374338.76170@m73g2000cwd.googlegroups.com>
Message-ID: <1159280328.671934.42180@h48g2000cwc.googlegroups.com>

Paul Boddie wrote:

> One example I read recently [1] described how the marketplace
> in Oslo, Norway is currently short of 300-500 Java developers, but if
> you look beneath the surface, knowing that there are lots of Java
> developers out there looking for work, a gulf between the story and the
> facts emerges

Um, how many of these "lots of Java developers looking for work" live
in, or are willing to relocate to, Oslo? Another point might be that
many ads prefix the offered position with "senior", and my guess is
that most of those looking for work don't really qualify, for any
reasonable definition of "senior".

George



From mike.klaas at gmail.com  Fri Sep 29 14:26:10 2006
From: mike.klaas at gmail.com (Klaas)
Date: 29 Sep 2006 11:26:10 -0700
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <1159515955.553244.74480@i3g2000cwc.googlegroups.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
	<1159515955.553244.74480@i3g2000cwc.googlegroups.com>
Message-ID: <1159554370.109208.301430@m7g2000cwm.googlegroups.com>

metaperl wrote:
> Actually right after posting this I came up with a great usage. I use
> meld3 for my Python based dynamic HTML generation. Whenever I plan to
> loop over a tree section I use a for loop, but if there is no data to
> iterate over, then I simply remove that section from the tree or
> populate it with a "no data" message.

else: does not trigger when there is no data on which to iterate, but
when the loop terminated normally (ie., wasn't break-ed out).  It is
meaningless without break.

Python 2.4.3 (#1, Mar 29 2006, 15:37:23)
[GCC 4.0.2 20051125 (Red Hat 4.0.2-8)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> for x in []:
...     print 'nothing'
... else:
...     print 'done'
... 
done

-Mike



From ms at cerenity.org  Thu Sep 28 16:00:14 2006
From: ms at cerenity.org (Michael)
Date: Thu, 28 Sep 2006 21:00:14 +0100
Subject: Recursive descent algorithm able to parse Python?
References: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>
Message-ID: <451c29c5$0$16532$ed2619ec@ptn-nntp-reader01.plus.net>

seberino at spawar.navy.mil wrote:

> I'm a compiler newbie and curious if Python grammar is able to
> be parsed by a recursive descent parser or if it requires
> a more powerful algorithm.

Python is relatively simple to parse using a recursive descent parser. If
you're rolling your own as a learning exercise, the grammar for python is
included in one of the top level directories of the source distribution for
python. 

The one area that is slightly different from usual is the emitting of INDENT
and DEDENT tokens by the lexer due to handling of whitespace. But that's
not really that complex either.

A couple of years ago I decided to see what it would be like to try to parse
a python-like language with no keywords and to see if you could do it test
first (for fun :). If you do this, you discover the grammar is very short
but you need terminator tokens to close if..elif...elif...else... like
statements (eg if..elif...elif...else...end,
try...except...except...except...endtry).

I put that code up here: http://cerenity.org/SWP/ if you're curious.
That and the python grammar file should probably help you roll your own
parser. (It emits an AST that assumes everything is a function. I was
pondering giving it a lisp backend or transforming to lisp but never
got a round tuit)

If however you're doing this because you're not aware of the compiler
module, it's worth knowing that compiler.parse is a pretty useful
function :-)


Michael.


From sjmachin at lexicon.net  Thu Sep 21 12:27:12 2006
From: sjmachin at lexicon.net (John Machin)
Date: 21 Sep 2006 09:27:12 -0700
Subject: Python 2.5 WinXP AMD64
In-Reply-To: <4nfrhbFa4kbiU1@individual.net>
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
	<4nfrhbFa4kbiU1@individual.net>
Message-ID: <1158856032.261935.79320@e3g2000cwe.googlegroups.com>


Bjoern Schliessmann wrote:
> Christophe wrote:
>
> > To be exact, you need a 64bit Windows OS on a 64bit cpu.
>
> Is there a reason that can be explained in a less-than-2-KB
> posting? :) I mean why Python depends on the processor type that
> much.
>

Python doesn't depend on the processor type in any sense that I
understand "depend".

Like many other large C applications, Python code makes heavy use of
the C preprocessor to cater for differences in operating systems,
runtime libraries, complier idio[syncra]cies, and (probably least
importantly) processor differences. One corpus of source code can be
used to create binaries for a large number of different combinations of
operating systems and processors.

For just one processor (the AMD64), you could have at least 4 different
binaries: (Windows/Linux) x (32|64) bit version of the OS.

HTH,
John



From jimburton1 at gmail.com  Fri Sep 29 08:51:50 2006
From: jimburton1 at gmail.com (jimburton)
Date: 29 Sep 2006 05:51:50 -0700
Subject: Organising unit tests
In-Reply-To: <1159526741.807715.43600@m73g2000cwd.googlegroups.com>
References: <1159526741.807715.43600@m73g2000cwd.googlegroups.com>
Message-ID: <1159534310.549434.195850@i3g2000cwc.googlegroups.com>

OK, so I'm trying to collect the tests with python and add them to the
test suite dynamically, but I have a problem with module names. Here's
what I've got:
#########################
import os
from os.path import join
import unittest

alltests = unittest.TestSuite()

def mightBeATest(f):
    #TODO check whether it really is a test
    return f.endswith('.py') and f != '__init__.py'

def isModule(d):
    if not os.path.isdir(d):
        return False
    for f in os.listdir(d):
        if f == '__init__.py':
              return True
    return False


def getTestsFromDir(dir, currentmod):
    for f in os.listdir(dir):
        if not f.startswith('.'):
            if isModule(f):
                #TODO how to check whether we are several modules in?
                mod = __import__(f)
                getTestsFromDir(os.path.join(dir, f), mod)
            elif mightBeATest(os.path.join(dir, f)):
                fname, etx = os.path.splitext(f)
                print 'adding test
with',('alltests.addTests(unittest.TestLoader().loadTestsFromTestCase('+(currentmod.__dict__[fname])+'))')

eval('alltests.addTests(unittest.TestLoader().loadTestsFromTestCase('+currentmod.__dict__[fname]+'))')


getTestsFromDir(os.curdir, None)
print alltests.countTestCases()
############################

it's importing and referring to the current module that I have a
problem with...it gives me a key error.



From paul at boddie.org.uk  Fri Sep  8 10:27:47 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 8 Sep 2006 07:27:47 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
	<1157720105.181682.169290@m73g2000cwd.googlegroups.com>
	<1157723311.085204.168070@i42g2000cwa.googlegroups.com>
Message-ID: <1157725667.087784.38150@i3g2000cwc.googlegroups.com>

Francach wrote:
>
> Firefox lets you group the bookmarks along with other information into
> directories and sub-directories. Firefox uses header tags for this
> purpose. I'd like to get this grouping information out aswell.

import libxml2dom # http://www.python.org/pypi/libxml2dom
d = libxml2dom.parse("bookmarks.html", html=1)
for node in d.xpath("html/body//dt/*[1]"):
    if node.localName == "h3":
        print "Section:", node.nodeValue
    elif node.localName == "a":
        print "Link:", node.getAttribute("href")

One exercise, using the above code as a starting point, would be to
reproduce the hierarchy exactly, rather than just showing the section
names and the links which follow them. Ultimately, you may be looking
for a way to just convert the HTML into a simple XML document or into
another hierarchical representation which excludes the HTML baggage and
details irrelevant to your problem.

Paul



From robert.kern at gmail.com  Sat Sep 23 18:06:26 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 17:06:26 -0500
Subject: Reverse a String?
In-Reply-To: <312cfe2b0609231454l2678aa96ifb0e59611295d973@mail.gmail.com>
References: <312cfe2b0609231402y4241d7cep36f1a4a73a82ead8@mail.gmail.com>	<ef47ge$qvb$1@sea.gmane.org>
	<312cfe2b0609231454l2678aa96ifb0e59611295d973@mail.gmail.com>
Message-ID: <ef4b54$449$1@sea.gmane.org>

Gregory Pi?ero wrote:
> On 9/23/06, Robert Kern <robert.kern at gmail.com> wrote:
>> Not in that form, no, since this already exists:
>>
>>    text[::-1]
> 
> Wow, that's really cool!  Here are my questions:
> 
> 1. How long has this thing been going on? I didn't know slice even
> took an extra argument like that.

Slicing took that "step" argument since 1.4. However, only Numeric  arrays used 
it up until 2.3 where it was added to the builtin types.

> 2. Where can I get the lowdown on everything there is to know about
> slice?  Since I've obviously been living in ignorance all these years!

   http://www.python.org/doc/2.3.5/whatsnew/section-slices.html

Generally the "What's New" documents are very good for catching up. I've found 
that they're also a very good, high-density method of refreshing one's memory 
about useful little tidbits. Sadly, they're not all collected in one place for 
that purpose. But you can fake it a bit by replacing <version> in the following 
URL with each of 2.2.3, 2.3.5, 2.4.3, 2.5:

   http://www.python.org/doc/<version>/whatsnew/

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From forum at anton.e4ward.com  Sat Sep  2 16:53:21 2006
From: forum at anton.e4ward.com (forum at anton.e4ward.com)
Date: 2 Sep 2006 13:53:21 -0700
Subject: Program to backtrack function calls in source code?
Message-ID: <1157230401.389698.234300@b28g2000cwb.googlegroups.com>

Hi,

many mistakes in programming arise when one changes the code and
forgets to adjustment somewhere where it is used. Is there a program
that can extract all place in the source code where a variable is
accessed or a function called?
For example in the simplest case I want to change the name of a
function everywhere in the source...

Anton



From ramasubramani.g at gmail.com  Wed Sep  6 06:56:48 2006
From: ramasubramani.g at gmail.com (Rama)
Date: Wed, 6 Sep 2006 16:26:48 +0530
Subject: Getting Process Name on Win32
Message-ID: <3f8d3ac50609060356r3e16137eib19c7eaf0ead829c@mail.gmail.com>

Hi,

     I want to list the names of all the processes running on my machine. I
am stuck at this point and do not know how to extract the name of a process.

     Using win32process.EnumProcesses, I am able to obtain the pids of all
the processes and using win32api.OpenProcess() I have obtained a handle to
the process. However, I could not find an appropriate method to provide me
the name of the process. I went through the available documentation on the
http://aspn.activestate.com/ASPN/docs/ActivePython/2.4/pywin32/win32.htmlsite
- but could not find something to help me.

     Could some one please guide me on this?

thanks,
Rama
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From ldo at geek-central.gen.new_zealand  Thu Sep 28 18:44:19 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 10:44:19 +1200
Subject: Making sure script only runs once instance at a time.
References: <mailman.801.1159372327.10491.python-list@python.org>
Message-ID: <efhj68$8qn$1@lust.ihug.co.nz>

In message <mailman.801.1159372327.10491.python-list at python.org>, Hari
Sekhon wrote:

> I have written a script and I would like to ensure that the script is
> never run more than once at any given time.

<http://groups.google.co.nz/groups?selm=ldo-727939.19244215042006 at lust.ihug.co.nz>


From fredrik at pythonware.com  Thu Sep 14 08:34:40 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 14:34:40 +0200
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
Message-ID: <eebi90$c2j$1@sea.gmane.org>

"bmearns" wrote:

> Specifically, I'm trying to write an FTP host, and I'm trying to
> implement the PORT command. From everything I've read, the client
> supplies the IP address and port number for where I'm supposed to
> connect to send it data (like a LISTing), and it's expecting me to
> connect over port 20. If anyone is familiar with FTP and can tell me
> whether this is true or not, whether I really need to go out on port
> 20, I'd appreciate it, as well.

PORT means that the client is asking the server to connect to the given
IP/port combination; see:

    http://cr.yp.to/ftp/retr.html

the port number used by the server for this connection is irrelevant.

</F> 





From wildemar at freakmail.de  Thu Sep 21 01:09:03 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 07:09:03 +0200
Subject: naming objects from string
In-Reply-To: <45121a25$0$75030$14726298@news.sunsite.dk>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>	<1158813236.493366.122600@k70g2000cwa.googlegroups.com>
	<45121a25$0$75030$14726298@news.sunsite.dk>
Message-ID: <45121E6F.3060802@freakmail.de>

Damjan wrote:
> try
> sys.modules[__name__].__dict__[x] = a

@manstay: You see! Ugly, unreadable trickery!
Hands off this stuff, bad mojo!

You've been told three very different approaches now, which is a pretty 
good indicator that there is no obvious way to do it. Which means 
another angle to your problem might make it a lot easier.
(btw: Try 'import this' at the python prompt for some wise words.)

Please describe your problem and let us suggest that new angle.

wildemar


From http  Tue Sep 12 10:17:37 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 07:17:37 -0700
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
	<1158067637.693157.189070@m73g2000cwd.googlegroups.com>
Message-ID: <7x3baxp3su.fsf@ruckus.brouhaha.com>

"Simon Wittber" <simonwittber at gmail.com> writes:
> For game programming purposes, I was hoping someone could point me to a
> technique for sharing objects across Python processes, preferably
> without any kind of marshal/unmarshal steps. It's a long shot, I know.
> To be viable, I'll need to be able to pass messages between processes
> very quickly. For example, It would be simple to paralellize some
> graphics calculations over two processors with each process sharing a
> common read-only scene data structure; however, a marshalling step in
> this kind of process would be too costly.

If it's for some specific calculation in the game, the bluntest
approach is probably to write a C extension that releases the GIL to
do the calculation, and then use ordinary threads for concurrency.
Put appropriate locks in the object to synchronize on.


From robert.kern at gmail.com  Fri Sep 29 19:57:12 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 29 Sep 2006 18:57:12 -0500
Subject: another distutils question
In-Reply-To: <pan.2006.09.29.23.24.21.541676@keithperkins.net>
References: <mailman.966.1159552468.10491.python-list@python.org>
	<pan.2006.09.29.23.24.21.541676@keithperkins.net>
Message-ID: <efkbsh$p1m$1@sea.gmane.org>

Keith Perkins wrote:

> On a similar note , I have another question about distutils and data files.
> I have a little program that uses a txt file to store data, and it works
> fine running it in it's own folder, if I install through distutils, using
> sudo to get it to write to the site-packages folder (which root owns), it
> installs the data file so that it is owned by root, and not by me, so
> that the data file can't be written to (although the script can read it).
> Do I need to run a post install script, or add something to setup.py file
> to chown the file or am I doing something wrong?  There doesn't seem to be
> anything on this in the docs.  

There's nothing in distutils specifically that will let you do this. The root 
user will have to chown/chgrp/chmod/chwhatever the package that you installed 
manually.

You shouldn't use package data for things that are going to be modified. 
Instead, use a directory like ~/.myscript/ or something else.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From caolan at ldmf.net  Fri Sep  1 12:31:11 2006
From: caolan at ldmf.net (Caolan)
Date: Fri, 1 Sep 2006 09:31:11 -0700
Subject: Newbie question involving buffered input
Message-ID: <FCCAC8CB56A9C14482D07A3E50AFBEE8553C@winter-heart.wintersheart.net>

I am executing the code below on a Windows XP system and if I enter > 2 characters it buffers the input and the call to sys.stdin.flush does not flush the input, it remains buffered.
 
What am I doing wrong here?
 
Thanks,
 
Caolan
 
        try:
            gooberselectX = sys.stdin.read(2)
        except IOError, e:
            print 'error reading from stdin device'
        except KeyboardInterrupt, e:
            print 'you cannot break. please use the \'q\' key to exit'
        else:
            try:
                sys.stdin.flush()
            except IOError, e:
                print 'error flushing buffered input'
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From sjmachin at lexicon.net  Tue Sep 19 11:50:33 2006
From: sjmachin at lexicon.net (John Machin)
Date: 19 Sep 2006 08:50:33 -0700
Subject: Installing 2.5 with 2.4?
In-Reply-To: <AlTPg.2$1n3.27@news.tufts.edu>
References: <U0TPg.1$1n3.143@news.tufts.edu><4nadmaF9c3hpU1@uni-berlin.de>
	<AlTPg.2$1n3.27@news.tufts.edu>
Message-ID: <1158681033.708546.132710@b28g2000cwb.googlegroups.com>


John Salerno wrote:
> Diez B. Roggisch wrote:
> > John Salerno wrote:
> >
> >> Hi all. Just curious, before I do it myself, about the best way to
> >> install 2.5 if it's the only version I want to use. Should I uninstall
> >> 2.4 first? Does 2.5 replace 2.4? I doubt the latter, but if I install
> >> 2.5, does that mean I need to reinstall all the extensions I had for 2.4
> >> again, or does 2.5 detect them somehow?
> >
> > Without an OS given, difficult answer. Generally, you can assume that there
> > is no need to ditch one version because you use another, they don't
> > interfer with each other. Only which one is perceived as "current" might
> > change and alter some behavior.
> >
> > However, you have to install all extensions again, that is for sure. And
> > most probably some of them won't work so far, as they might need some
> > modification or at least time to make them available as binary.
> >
> > Diez
>
> Thanks for the answers guys. I'm using WinXP. I noticed that when I
> installed 2.5rc2, it wasn't automatically assigned as the default
> version of Python. I wasn't sure if this was just because it was an RC,
> or maybe I have to manually make 2.5 the default. But I will uninstall
> 2.4 first anyway, so it shouldn't matter.
>

1. You need to set your path manually. A BAT file called pypath.bat
placed somewhere on your PATH and containing:
    path c:\python%1;c:\python%1\scripts;%path%
might come in handy. Warning: this is best used once each time you open
up a command window; it's cumulative (Windows is not smart enough to
remove duplicate entries) and there is a an upper limit (I believe) on
the size of the PATH.
2. Re-installing purely-Python packages is highly desirable -- don't
just copy existing files from 2.4.
3. Re-installing packages with a binary component (.pyd) on Windows is
*essential* -- they won't work on a Python version other than the one
whose libs they were linked against.

I'd suggest that you uninstall 2.4 later if at all. Ensure that you
have got all the extensions you want/need for 2.5 before you burn your
boats. As Diez says in effect, there is no guarantee that any
particular extension is available for 2.5 on Windows right now.

Cheers,
John



From MonkeeSage at gmail.com  Sat Sep 23 18:57:12 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 15:57:12 -0700
Subject: webbrowser module's Firefox support
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
Message-ID: <1159052232.734611.211860@m7g2000cwm.googlegroups.com>

Dustan wrote:
> I did do a search here, but came up empty-handed. Can anyone tell me
> how to get the webbrowser module to recognize firefox's existence,
> given this information?

Looks like it is checking %PATH% for firefox.exe. Try:

>>> import os
>>> os.environ["PATH"] = r"C:\Program Files\Mozilla Firefox;"
>>> import webbrowser
>>> webbrowser._browsers 

Regards,
Jordan



From johnjsal at NOSPAMgmail.com  Mon Sep 11 15:06:45 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 11 Sep 2006 19:06:45 GMT
Subject: question about including something like sqlite in python
Message-ID: <9tiNg.2735$No6.53971@news.tufts.edu>

I was just thinking, since Python 3.0 is supposed to clean up a lot of 
the unnecessary or redundant features of Python and make other things 
more streamlined, does it seem to anyone that including SQLite goes 
against this goal?

This is just me thinking out loud, mind you, but it seems like including 
  a database module (especially one that many people won't use in favor 
of MySQL or PostgreSQL, etc.) is weighing down the standard library. I 
suppose the sqlite module might still be removed in 3.0, but the 
inclusion of it at all seems a little strange (and also sort of like an 
endorsement for using it).

I can see how it would be helpful to include something like hashlib, for 
example, because it streamlines the different hashing modules, and even 
ElementTree, which might be seen as the standard way to work with XML.

Anyway, I'd be curious to hear other people's thoughts about this. Maybe 
I'm looking at it the wrong way.


From michele.simionato at gmail.com  Wed Sep 20 09:58:54 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 20 Sep 2006 06:58:54 -0700
Subject: Request for elucidation: enhanced generators
In-Reply-To: <Xns98448E976DAD2duncanbooth@127.0.0.1>
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
	<mailman.323.1158750988.10491.python-list@python.org>
	<1158754746.300782.256090@m73g2000cwd.googlegroups.com>
	<Xns98448E976DAD2duncanbooth@127.0.0.1>
Message-ID: <1158760734.543511.5530@k70g2000cwa.googlegroups.com>

Duncan Booth wrote:
> One example which is commonly given is to implement a web application using
> continuations. So in Python terms a session is handled by a generator which
> yields a form to be sent back to the user and the user's response is sent
> in to the request using the generator's send method. State would be
> maintained in the generator. Whether this actually works well in practice
> (and how you handle things like a back button on the forms) is another
> matter.
>
> So very roughly your web code might look like this:
>
> def checkout(basket):
>     orderOk = False
>
>     while not OrderOk:
>        order = (yield OrderForm(basket))
>        address = (yield AddressForm())
>        payment = (yield PaymentForm(order.total))
>        confirmation = (yield ConfirmationForm(order, address, payment))
>        orderOk = confirmation.confirmed
>
>     placeOrder(order, address, payment)
>     yield OrderPlacedPage()

I too wonder about the back button. I am familiar with this reference
about modal
web servers, that you probably know:
http://www.double.co.nz/scheme/modal-web-server.html
In that case, the back button can be made to work since in Scheme there
are full
continuations and it is possibile to store the state at a given point
in time and go
back to that point later on (i.e. when the user press the back button).

Python generators however are not full continuations and you cannot go
back
to a previous time. I remember I did some experiment and it was
possible to
solve the problem by generating a lot of closures and associating each
closure to
one state in the time and one page in the UI. But is was complicated
enough
and finally I ended up simply storing the values entered by the user in
HTML hidden widgets.
Sometimes the simplest solutions are the better ones ;)

                       Michele Simionato



From ralmeida at gmail.com  Mon Sep  4 13:40:37 2006
From: ralmeida at gmail.com (Rob De Almeida)
Date: 4 Sep 2006 10:40:37 -0700
Subject: Where to find fpconst?
In-Reply-To: <roy-19E7C6.13275304092006@reader2.panix.com>
References: <roy-19E7C6.13275304092006@reader2.panix.com>
Message-ID: <1157391637.121891.85540@i42g2000cwa.googlegroups.com>

> Anybody know where I can find fpconst?

I uploaded the lastest copy I could find to the Cheese Shop
(http://www.python.org/pypi/fpconst/).

I'm not affiliated in any way with fpconst, btw.

Rob



From mpn at mic.dtu.dk  Mon Sep 11 11:54:00 2006
From: mpn at mic.dtu.dk (mpn at mic.dtu.dk)
Date: 11 Sep 2006 08:54:00 -0700
Subject: Behaviour of classes (tired of writing too much)
Message-ID: <1157990040.000384.311320@m73g2000cwd.googlegroups.com>

How do I catch any reference to an instance of a class, i.e., I want to
run some code as soon as an instance of a class is used in any way.
(and I don't want to define all of __add__, __ge__ etc etc etc etc etc)

The reason for the question is that I want to simplify the Message
Passing Interface (MPI) calls. I find it irritating that I have to
start a non-blocking send/receive and then check that the data has
arrived. Why not automagically check/wait for the data when it is
needed?

The second part that I also need to make that idea work is the ability
to change the instance to the received data, i.e., self=received data,
and then launch the original reference.

So I guess that the code I want to write is:

class MPI_tmp:
       # temporary object that changes ITSELF into another object when
called in any way
       def __on_any_call__(self):
               self=newobject()
               self.__run_the_anycall__()

which probably doesn't work :-)

Greatful for any ideas / Magnus



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 10:48:04 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 15:48:04 +0100
Subject: best way of testing a program exists before using it?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B43D@vogbs009.gb.vo.local>

| Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
| >  [Nick Craig-Wood]
| > 
| > | Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
| > | >          if os.path.isfile (filepath):
| > | >            print filepath
| > | 
| > | You might get a more accurate result using
| > | 
| > |   os.access(filepath, os.X_OK)
| > | 
| > | instead of
| > | 
| > |   os.path.isfile(filepath)
| > | 
| > | Which checks the file is executable
| > 
| >  Sadly, not under Win32, hence the shenanigans with
| >  the PATHEXT variable :)

[Nick Craig-Wood]
| Make a patch for os.access()?  It says in the docs it works on
| Windows!

I suspect it might end up being a doc patch. AFAICR the os-specific 
stuff is implemented in C; I'll try downloading the source at some 
point and having a look.

The existing docs do say, though:

"""
Note: I/O operations may fail even when access() indicates that 
they would succeed, particularly for operations on network filesystems 
which may have permissions semantics beyond the usual POSIX
permission-bit model. 
"""

Don't know if this covers the case meanwhile.

TJG

________________________________________________________________________
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From steven.bethard at gmail.com  Mon Sep 25 10:03:06 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 25 Sep 2006 08:03:06 -0600
Subject: Leave the putdowns in the Perl community, the Python world does
	not need them
In-Reply-To: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
Message-ID: <hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>

metaperl wrote:
> I was shocked to see the personal insults hurled in this thread:
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b

I see that this is a Fredrik Lundh thread.  I've felt the same way 
before, but Fredrik has been around a long time[1] and if you listen 
through the sometimes sharp words, he really has a lot of intelligent 
things to say.  All I can advise is that if you feel like Fredrik is 
getting under your skin, take a deep breath and read a different thread 
for a while.  I promise you, it's worth it!

STeVe

[1] He's the author of Python's unicode support and Python 2.5's 
elementtree module.


From bj_666 at gmx.net  Thu Sep 14 11:36:08 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Thu, 14 Sep 2006 17:36:08 +0200
Subject: How do I converted a null (0) terminated string to a Python
	string?
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>
	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
Message-ID: <pan.2006.09.14.15.36.07.509974@gmx.net>

In <1158247587.541483.266640 at k70g2000cwa.googlegroups.com>, John Machin
wrote:

> In other words, if the last byte of strg is NUL, throw it away.
> 
> The truly paranoid would code that as
>     if strg and strg[-1] etc etc
> so that it wouldn't blow up if strg is empty -- strange things can
> happen when you are reading other people's data :-)

I would spell it:

if strg.endswith('\0'):
    strg = strg[:-1]

Ciao,
	Marc 'BlackJack' Rintsch


From robert.kern at gmail.com  Fri Sep  1 23:20:27 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 01 Sep 2006 22:20:27 -0500
Subject: C code in Python
In-Reply-To: <017A19E9-8F61-4319-A651-0F1DDA68BF65@mac.com>
References: <017A19E9-8F61-4319-A651-0F1DDA68BF65@mac.com>
Message-ID: <edat9r$m13$1@sea.gmane.org>

Tommy Grav wrote:
> I have some numerical code in C that I would like to call from Python. Can
> anyone point me in a direction for some text I could read on how to do this?

It somewhat depends on the kind of numerical code and the interface it exposes. 
Do you need to pass arrays back and forth? Is your interface limited to numbers, 
or will you need to pass strings and structures around, too (i.e. can the 
interface be as limited as FORTRAN 77 is? That would let you use f2py which is 
quite nice if you need to pass arrays around)?

If you need arrays, you will probably want to use numpy to represent them in Python.

   http://numpy.scipy.org

At the bottom of this page, you can read about a number of ways to interface C 
code with numpy.

   http://www.scipy.org/Cookbook

I would probably suggest using ctypes at this point unless you have reasons to 
otherwise. Some recent work has gone into making this option work well with 
numpy. With ctypes' inclusion in Python 2.5, this will probably become one of 
the more preferred methods of calling out to C code.

   http://www.scipy.org/Cookbook/Ctypes2
   http://starship.python.net/crew/theller/ctypes/

If that doesn't work out for you, and the many choices leave you bewildered, 
describe your C code and what you want the Python interface to look like, and 
then we can help you find a better tool for your needs.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From brian at sweetapp.com  Tue Sep 26 12:11:13 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Tue, 26 Sep 2006 18:11:13 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehij7q.evq.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<Xns984996E6BABCEduncanbooth@127.0.0.1>	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>	<mailman.672.1159275735.10491.python-list@python.org>	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>	<mailman.680.1159277904.10491.python-list@python.org>	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>	<mailman.687.1159280315.10491.python-list@python.org>	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>	<mailman.690.1159282116.10491.python-list@python.org>	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>	<mailman.698.1159283878.10491.python-list@python.org>	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
Message-ID: <45195121.4030506@sweetapp.com>

Jon Ribbens wrote:
> I guess, if you mean the part of the thread which went "it'll break
> existing code", "what existing code"? "existing code" "but what
> existing code?" "i dunno, just, er, code" "ok *how* will it break it?"
> "i dunno, it just will"?

See below for a possible example.

>> BTW, I am curious about how you do unit testing. The example that I used 
>> in my summary is a very common pattern but would break in cgi.escape 
>> changed it's semantics. What do you do instead?
> 
> To be honest I'm not sure what *sort* of code people test this way. It
> just doesn't seem appropriate at all for web page generating code.

Well, there are dozens (hundreds?) of templating systems for Python. 
Here is a (simplified/modified) unit test for my company's system (yeah, 
we lifted some ideas from Django):

test.html
---------
<p>{foo | escape}</p>

test.py
-------
t = Template("test.html")
t['foo'] = 'Brian -> "Hi!"'
assert str(t) == '<p>Brian -&gt; "Hi"</p>'

So how would you test our template system?

> Web
> pages need to be manually viewed in web browsers, and validated, and
> checked for accessibility. 

True.

> Checking they're equal to a particular
> string just seems bizarre (and where does that string come from
> anyway?)

Maybe, which is why I'm asking you how you do it. Some of our web 
applications contain 100s of script generated pages. Testing each one by 
hand after making a change would be completely impossible. So we use 
HTTP scripting for testing purposes i.e. send this request, grab the 
results, verify that the test in the element with id="username" equals 
"Brian Quinlan", etc. The test also validates that each page is well 
formed. We also view each page at some point but not every time a 
developer makes a change that might (i.e. everything) affect the entire 
system.

Cheers,
Brian


From vatamane at gmail.com  Sat Sep  9 02:16:57 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 8 Sep 2006 23:16:57 -0700
Subject: best split tokens?
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
	<mailman.182.1157751737.5279.python-list@python.org>
	<1157756531.475390.100210@b28g2000cwb.googlegroups.com>
	<mailman.197.1157767450.5279.python-list@python.org>
Message-ID: <1157782617.523077.227770@i3g2000cwc.googlegroups.com>

 It depends on the language as it was suggested, and it also depends on
how a token is defined.  Can it have dashes, underscores, numbers and
stuff? This will also determine what the whitespace will be. Then the
two main methods of doing the splitting is to either cut based on
whitespace (specify whitespace explicitly) or pick out only valid token
symbols uninterrupted by any whitespace (specify valid symbols
explicitly).

Nick V.


Tim Chase wrote:
> >> 	rgx = re.compile('\W+')
> >>
> >> if you don't mind numbers included you text (in the event you
> >> have things like "fatal1ty", "thing2", or "pdf2txt") which is
> >> often the case...they should be considered part of the word.
> >>
> >> If that's a problem, you should be able to use
> >>
> >> 	rgx = re.compile('[^a-zA-Z]+')
> >>
> >> This is a bit Euro-centric...
> >
> > I'd call it half-asscii :-)
>
> groan... :)
>
> Given the link you provided, I correct my statement to
> "Ango-centric", as there are clearly oddball cases in languages
> such as French.
>
> > textbox = "He was wont to be alarmed/amused by answers that won't work"
>
> Well, one could do something like
>
>  >>> s
> "He was wont to be alarmed/amused by answers that won't work"
>  >>> s2
> "The two-faced liar--a real joker--can't tell the truth"
>  >>> r = re.compile("(?:(?:[a-zA-Z][-'][a-zA-Z])|[a-zA-Z])+")
>  >>> r.findall(s), r.findall(s2)
> (['He', 'was', 'wont', 'to', 'be', 'alarmed', 'amused', 'by',
> 'answers', 'that', "won't", 'work'], ['The', 'two-faced', 'liar',
> 'a', 'real', 'joker', "can't", 'tell', 'the', 'truth'])
>
>
> which parses your example the way I would want it to be parsed,
> and handles the strange string I came up with to try similar
> examples the way I would expect that it would be broken down by
> "words"...
>
> I had a hard time comin' up with any words I'd want to call
> "words" where the additional non-word glyph (apostrophe, dash,
> etc) wasn't 'round the middle of the word. :)
> 
> Any more crazy examples? :)
> 
> -tkc



From deets at nospam.web.de  Fri Sep 15 11:33:38 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 15 Sep 2006 17:33:38 +0200
Subject: fail to indent in inner loop
References: <1158334122.796811.216280@b28g2000cwb.googlegroups.com>
Message-ID: <4mvvejF81glfU1@uni-berlin.de>

perltcl at yahoo.com wrote:

> I've started learning python. I was typing from a tutorial,
> and I fail to indent on an inner loop.
> I got an error and all my previous typed lines are gone.
> is there a way to prevent this.
> i don't mind editing the last line, but to lose all the previous lines
> are too much.
> (since it has history function like bash.)

Use an IDE or editor that allows you to execute the code in the current
buffer. Thus you have the full editing capabilities combined with
interactive probing.

Python also has an option -i that when used together with a input file
makes it drop to the prompt - thus you can setup some things, and then
simply play around.

Diez


From anthony at python.org  Tue Sep 19 08:39:48 2006
From: anthony at python.org (Anthony Baxter)
Date: Tue, 19 Sep 2006 22:39:48 +1000
Subject: RELEASED Python 2.5 (FINAL)
Message-ID: <200609192239.57508.anthony@python.org>

It's been nearly 20 months since the last major release
of Python (2.4), and 5 months since the first alpha
release of this cycle, so I'm absolutely thrilled to be
able to say:

    On behalf of the Python development team
    and the Python community, I'm happy to
    announce the FINAL release of Python 2.5.

This is a *production* release of Python 2.5. Yes, that's
right, it's finally here.

Python 2.5 is probably the most significant new release
of Python since 2.2, way back in the dark ages of 2001.
There's been a wide variety of changes and additions,
both user-visible and underneath the hood. In addition,
we've switched to SVN for development and now use Buildbot
to do continuous testing of the Python codebase.

Much more information (as well as source distributions
and Windows and Universal Mac OSX installers) are available
from the 2.5 website:

    http://www.python.org/2.5/

The new features in Python 2.5 are described in Andrew
Kuchling's What's New In Python 2.5. It's available
from the 2.5 web page.

Amongst the new features of Python 2.5 are conditional
expressions, the with statement, the merge of try/except
and try/finally into try/except/finally, enhancements
to generators to produce coroutine functionality, and
a brand new AST-based compiler implementation underneath
the hood. There's a variety of smaller new features as
well.

New to the standard library are hashlib, ElementTree,
sqlite3, wsgiref, uuid and ctypes. As well, a new
higher-performance profiling module (cProfile) was
added.

Extra-special thanks on behalf of the entire Python
community should go out to Neal Norwitz, who's done
absolutely sterling work in shepherding Python 2.5
through to it's final release.

Enjoy this new release, (and Woo-HOO! It's done!)
Anthony

Anthony Baxter
anthony at python.org
Python Release Manager
(on behalf of the entire python-dev team)
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From ciaran at oduibhin.freeserve.co.uk  Thu Sep 28 07:36:18 2006
From: ciaran at oduibhin.freeserve.co.uk (Ciarán Ó Duibhín)
Date: Thu, 28 Sep 2006 12:36:18 +0100
Subject: Python and Win95B
Message-ID: <005201c6e2f2$510ff0c0$5be94c51@default>

I've just installed Python 2.5 under Win95B, and when run it says "The
PYTHON25.DLL file is linked to missing export
KERNEL32.DLL.GetFileAttributesExA".

Does Python 2.5 not run under Win95?  If not, is there an earlier version of
Python which does?

Thanks,
Ciar?n ? Duibh?n.





From fredrik at pythonware.com  Tue Sep 26 01:46:48 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 07:46:48 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159235326.385036.233440@i3g2000cwc.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
Message-ID: <efaes8$fro$1@sea.gmane.org>

walterbyrd wrote:


> I'm surprised. It seems I never see listings for python developers.

someone just posted this

 > Site          Perl      Python
 > Hotjobs       2756       655
 > Monster      >1000       317
 > Dice          4828       803

to the "talking to marketing people" thread (see that thread for a 
discussion of what those numbers really mean).

> I didn't mean any disrespect. I think python is a great language. It
> just doesn't seem like there is much demand for professional python
> developers.

well, if you're only watching mtv, it's easy to think that there's 
obviously not much demand for country singers, blues musicians, British 
hard rock bands, or melodic death metal acts.

</F>



From paddy3118 at netscape.net  Tue Sep  5 13:27:10 2006
From: paddy3118 at netscape.net (Paddy)
Date: 5 Sep 2006 10:27:10 -0700
Subject: why have to "from compiler import *"
References: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
	<1157453946.756864.231500@m79g2000cwm.googlegroups.com>
	<Xns98357F6C378A0duncanbooth@127.0.0.1>
Message-ID: <1157477230.157538.264080@p79g2000cwp.googlegroups.com>

Duncan Booth wrote:
> "Paddy" <paddy3118 at netscape.net> wrote:
>
> >
> >  import module1
> >  # namespace becomes:
> >    \-------------------------/
> >   |module1.moduleFunc1     |
> >   |module1.moduleClass1:   |
> >   |  class1Method1         |
> >   |  class1Method2         |
> >   |module1.moduleFunc2     |
> >   |module1.moduleVar1      |
> >   |module1.moduleVar2      |
> >    /------------------------\
>
> It would be more accurate to say:
>  # namespace becomes
>    \-----------------/
>    |module1          |
>    |                 |
>    /-----------------\

Possibly, although I purposely wanted to give a flavour of how things
might be accessed.

- Paddy



From filip.salomonsson at gmail.com  Mon Sep 25 11:51:03 2006
From: filip.salomonsson at gmail.com (Filip Salomonsson)
Date: Mon, 25 Sep 2006 17:51:03 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
	<slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
Message-ID: <2f334ccd0609250851o4d258a23o34680bdd765d6568@mail.gmail.com>

On 25 Sep 2006 15:13:30 GMT, Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:
>
> Here's a point for you - the documentation for cgi.escape says that
> the characters "&", "<" and ">" are converted, but not what they are
> converted to.

If the documentation isn't clear enough, that means the documentation
should be fixed.

It does _not_ mean "you are free to introduce new behavior because
nobody should trust what this function does anyway".
-- 
filip salomonsson


From keegan.csmith at gmail.com  Sun Sep  3 06:26:19 2006
From: keegan.csmith at gmail.com (keegan.csmith at gmail.com)
Date: 3 Sep 2006 03:26:19 -0700
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
References: <edcrms$auj$1@news.uit.no>
	<slrnefk26s.5pt.sybrenUSE@schuimige.stuvel.eu>
	<ede4g7$tbv$1@news.uit.no>
Message-ID: <1157279179.541586.236400@p79g2000cwp.googlegroups.com>

> I've read about SO_REUSEADDR. As far as I understand, this is what
> SO_REUSEADDR is for:
...
> I've tried setting this option, but could not see any notable changes...

I was having a similiar problem as you, where as soon as my program
exited, it would get started up again, but could not bind to the same
address.
So i added the follow straight after I create my server object:
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

And it worked. Note that my program was running on Linux, so this might
be a windows issue.



From steve at holdenweb.com  Tue Sep 12 07:26:23 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 12:26:23 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <7xzmd5e6vz.fsf@ruckus.brouhaha.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<mailman.303.1158019822.5279.python-list@python.org>	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>	<mailman.308.1158028136.5279.python-list@python.org>
	<7xzmd5e6vz.fsf@ruckus.brouhaha.com>
Message-ID: <ee65fm$30n$1@sea.gmane.org>

Paul Rubin wrote:
> "Mike Owens" <mikeowens at gmail.com> writes:
> 
>>No it doesn't. If you don't like SQLite's design decisions, write your
>>own embedded relational database, and stop yapping about something you
>>didn't lift a finger to create, but are clearly trying to benefit
>>from.
> 
> 
> That's silly.  The sqlite developers are making all kinds of claims on
> their web site, in order to attract users and build mindshare and gain
> the benefits thereof.  If the claims aren't valid, it's completely
> appropriate for others to call attention to it, whether or not they
> feel like doing anything to fix it.
> 
> It's just like anything else.  If you think your Congressperson is
> misleading the public about something or pursuing a bad policy, you
> should speak out about it.  That doesn't mean you need to run for
> Congress yourself.

Though it might improve the country's politics if wanting to be a 
Congressperson was an absolute disqualification from the job.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jan.dries at dcube-resource.be  Thu Sep 14 05:39:45 2006
From: jan.dries at dcube-resource.be (Jan Dries)
Date: Thu, 14 Sep 2006 11:39:45 +0200
Subject: lxml Windows binaries
In-Reply-To: <1158226045.776597.273060@e3g2000cwe.googlegroups.com>
References: <mailman.73.1158224324.10491.python-list@python.org>
	<1158226045.776597.273060@e3g2000cwe.googlegroups.com>
Message-ID: <45092361.5010200@dcube-resource.be>

Fuzzyman wrote:
> Jan Dries wrote:
>> I'm trying to find Windows binaries for lxml. The cheeseshop is supposed
>> to have such binaries, but I can't find them.
>> Does anyone know where I might find such binaries?
>>
> 
> The lxml install docs point to the following link for Windows binaries
> :
> 
>    http://www.zlatkovic.com/libxml.en.html
> 
> Which in turn points to :
> 
>     http://www.zlatkovic.com/pub/libxml/

Yes, but these are binaries for libxml. I found those already. What I 
need now is a binary version of the python extension module lxml 
(http://codespeak.net/lxml/). The docs there refer to 
http://cheeseshop.python.org/pypi/lxml, but that page only has a binary 
egg for Linux.

Regards,
Jan


From lucasea at sbcglobal.net  Fri Sep 29 12:45:49 2006
From: lucasea at sbcglobal.net (lucasea at sbcglobal.net)
Date: Fri, 29 Sep 2006 16:45:49 GMT
Subject: $1 MILLION REWARD for a simple paper in PHYSICS -- CONTROLLED
	DEMOLITION HOAX of 9/11
References: <1159506708.040845.171370@i42g2000cwa.googlegroups.com>
Message-ID: <15cTg.6524$e66.2934@newssvr13.news.prodigy.com>

Oh, good, just what we needed--sort of a Nobel Prize for whackos.  AP should 
be a shoo-in.

Eric Lucas


<thermate at india.com> wrote in message 
news:1159506708.040845.171370 at i42g2000cwa.googlegroups.com...
Copy and paste from the site on 911 http://reopen911.org/

$1 Million Challenge Details

This is void where prohibited by law: including but not limited to
Colorado , Maryland , Nebraska , North Dakota, Vermont, New Jersey and
Tennessee. It is void anywhere prohibited by law.

The contest page supercedes all previous ones and all previous offers
are withdrawn. 3-September-2006. Only four significant changes have
been made since the beginning except for clarification, (a) point 12,
about molten steel. b) We equate exotic weapons as "explosives" (you do
not have to prove that exotic weapons were not used. But you cannot
claim the prize if you do prove that exotic weapons were used). c) The
renaming of this offer as a challenge and not a contest. d) all
evidence and points presented by Scholars for Truth, Professor Jones,
and Morgan Reynolds must be refuted and are included in the
requirements, and [newest] e) the radiation contents of the dust must
be explained.

[Note: that the point of this challenge is to show that the terrorist
administration of George Bush control of the NIST's contention of how
the buildings fell is totally ludicrous. We continue to update this
page with more facts as Professor Jones, Morgan Reynolds, Nico Haupt,
Jim Fetzer, Rosalee Grable, Gerard Holgram, and others point out more
and more holes in the official"bull...."] No one as of 3 September 2006
has even entered a valid entry that has all of the demanded points
answered with calculations, drawings and timelines. Anyone can claim.
No one has put up on their side. We have put up $20,000 under the FOIA
to get all of the NIST's data. it is coming to www.nistreview.org

In response to challenges that one cannot prove a negative this
paragraph has been added. There are several famous negative "proofs"
that are accepted by the entire scientific community:

    The Second Law of Thermodynamics.
    The Heisenburg Principal

    If I prove that I am at point A, that proves I am not at point B.

    If one claims that there is an elephant in a room and we enter the
room to find that it is empty, that proves there is not an elephant in
the room.

    For a more detailed debunking of, "you cannot prove a negative",
See Article

This challenge has taken the form of the latter two logical statements
above. When people say you cannot prove a negative, they are referring
to statements like:

    "This exists because there is no proof that it does not exist."

All explanations, in all parts of this contest must be supported with
detailed drawings for all significant events. Particularly, explain and
document with drawings and engineering the following video clips: 1) In
this first video at 0:02 the puffs start below the collapse. 2) At 0:05
several floors blow out at the exact same time. 3) The explosions come
in waves. 4) This 2rd video shows puffs coming out of floors far below
the buckling section. 5) At 0:09 some puffs come out of single windows
far below the collapse. Remember that the government claims that the
elevator shafts were open chimneys so that would have been the path of
least resistance to the blown out windows in the lobbies. 6) At 0:12 at
the lower left corner of the building explodes ahead of the collapse.
7) This 3rd video, the collapse is not floor by floor as the left side
explodes approximately 4 floors ahead of the right side at the corner,
not the middle of the floor as the FEMA drawings show. 8) This north
tower video the same. 9) This second North Tower video the demolition
"squibs" of dust shooting out several floors below the "collapse". 10)
In the this video the fireman describes how was EVERYTHING reduced to
dust, everything. Not even standard controlled demolitions do that as
building 7 showed. No building collapse has ever done that. Explain and
document.

11) The second flash above and our screen saver show a video of pieces
of the building flying UP and out over 100 meters with trails [this
sentence was modified August 22, 2006] of something following them or
flowing from them (at 6.1 seconds you see the best example); provide
details and drawings of how this happened including the composition of
the trails and how they are able to follow or flow from them. Remember
that structural steel is brittle, it does not flex like Iron. Therefore
there is no possibility of it flexing enough to catapult itself upward.

12) This is a new requirement added on November 11, 2005: There are
several published observations of molten metal in the basements of all
three buildings, WTC 1, 2 and 7.  For example,

    Dr. Keith Eaton toured Ground Zero and stated in The Structural
Engineer, "They showed us many fascinating slides [Eaton] continued,
ranging from molten metal which was still red hot weeks after the
event, to 4-inch thick steel plates sheared and bent in the disaster."
(Structural Engineer, September 3, 2002, p. 6; emphasis added.)

    The observation of molten metal at Ground Zero was emphasized
publicly by Leslie Robertson, the structural engineer responsible for
the design of the World Trade Center Towers, who reported that "As of
21 days after the attack, the fires were still burning and molten steel
was still running."  (Williams, 2001, p. 3; emphasis added.)

    Sarah Atlas was part of New Jersey's Task Force One Urban Search
and Rescue and was one of the first on the scene at Ground Zero with
her canine partner Anna.  She reported in Penn Arts and Sciences,
summer 2002, "'Nobody's going to be alive.' Fires burned and molten
steel flowed in the pile of ruins still settling beneath her feet."
(Penn, 2002; emphasis added.)

    Dr. Allison Geyh was one of a team of public health investigators
from Johns Hopkins who visited the WTC site after 9-11. She reported in
the Late Fall 2001 issue of Magazine of Johns Hopkins Public Health,
"In some pockets now being uncovered they are finding molten steel."

    Since steel melts at approximately 2,800? Fahrenheit. The maximum
temperature of a flame in open air is 1800 degrees F. FEMA and NIST
claim a temperature of only 90O? Fahrenheit was reached to weaken the
steel. Explain how the steel melted without explosives.

13) The seismic data shows the structure of the tower was broken apart
in 8 to 10 seconds, though many of the pieces of the building took
longer than that the fall. Entrants must prove how the trade towers
steel structure was broken apart without explosives in that time
period.  Please note this says "broken apart", not collapsed. There is
a sequence of photos in Eric Hufschmid's Painful Questions on pages 50
to 55 showing big steel beams falling in the air where the explosives
are staying ahead of the falling beams. That shows exactly what the
seismic data shows; namely, the explosives were shattering the building
faster than the rubble was falling. The steel beams were falling at
free fall speeds. [Added 25 Aug, 2006. If you question the time and can
provide proof of a different time, then you may use that time. You
still have to have detailed drawings and a time line supported by the
calculations of the physics of energy and motion. It takes time and
energy for a collapse to break apart the bolts, welds, concrete and
steel floors, and beams]

The formula for distance and time is:

s=?at?

Where:

s = distance in feet
a = gravitational constant: 32 ft/sec?
t = time in seconds.

The videos and seismic records show that the time of one structure's
destruction was approximately 8.4 seconds though the complete settling
of the building lasted slightly longer, perhaps as long as 12 seconds,
but not long enough to account for anything but explosives.

s = ? * 32 * 8.5?
s = 1156 feet

However, WTC 1 (the north tower) had a roof height of 1,368 feet. WTC 2
(the south tower) was nearly as tall, with a roof height of 1,362 feet.
Each floor was therefore approximately 12.5 feet.

It is therefore proven that the towers' structures were destroyed at
very close to free fall speed, perhaps faster since there is air
resistance to consider. Impossible without explosives.

14) Since it is alleged that the floors pancaked down on each other
crushing each floor as it went, entrants' must prove explosives were
not used with a time line with the energy needed, mass affected, time
to fall and time to break all of the hundreds of thousands of bolts,
rivets and welds, crush all the concrete plus thousands of computers,
desks, copy machines, all the office contents, the speed of the total
falling mass after each impact, and net mass falling after each
observed ejection of the dust clouds of concrete powder, and the energy
required to send the cloud all the way to New Jersey in a
self-contained flow (this alone requires 14 tons of explosives - the 14
tons paper must be disproved as part of this contest. 15) Contestants
must show exactly how the concrete was pulverized and ejected with
detailed drawings).

16) Force is a factor relative to resistance. For instance, we are on
the earth's surface spinning around the earth's center at 1000 miles
per hour. So we each have the POTENTIAL force of our individual masses
being in a wreck at 1000 mph. But since we and most of the objects on
the earth are all moving at the same relative speed, there is nothing
for this force to work against and we are unharmed - in effect there is
no force. The same holds true for the building collapses. The potential
force to crush the concrete by the falling mass is relative to the
resistance it meets. If there is no resistance, there is no crushing.
If there is a little resistance, then there will be a little crushing,
and so on, depending on the amount of resistance. If the bolts, rivets,
and welds held, then the building would not continue to collapse. If
the resistance of the bolts, rivets, and welds was less than the power
needed to crush concrete, then the concrete would not have been crushed
until the whole mass hit the ground. Entrants must prove that the steel
bolts, rivets, and welds still had the resistance to stop the falling
mass long enough for the concrete and contents to be crushed. Then they
must explain what made them fail after the concrete was crushed. The
timing is important since it takes time to do anything, especially to
crush concrete, steel desks, etc. Entrants must include the energy
required, source, resistance, and timing for breaking the bolts,
rivets, welds, office contents, and concrete.

17) Entrants' must prove how the floors fell straight down so that each
floor was crushed uniformly and how the pulverized dust was ejected
from a steel pan with a steel plate and carpet over it. The official
diagrams show each floor hitting in the middle of the lower floor. If
so, then the concrete in the center might have been crushed, but not at
the edges. Since all the concrete was pulverized, entrants must explain
this in detail. Moreover, the graphic and video at the top of this page
show that the collapses in that portion were not straight down: that
the lower left corner is 4 or more stories ahead of the right. This
must be explained in detail and, like every other significant point,
with drawings and then the mechanism that changed the fall to straight
down.

To disprove explosives were used, entrants must further :

18) Provide a time and heat transfer study of attainable temperatures
within the core and perimeter columns based on best available data on
fuel load, air supply, efficiency of combustion and the spatial and
temporal extent of the fires, which the photographs and firemen's radio
transmissions show were small.

19) Describe in detail what "additional local failures" took place,
consistent with temperatures attained and initial damage.

20) Explain in detail how such local failures could lead to sudden and
complete failure of all core columns.

21) Account for the highly symmetrical and near-vertical character of
the collapses.

22) Describe the initiating event and mode of propagation of the final
collapse, consistent with the observed progression of the collapses,
including the near free-fall speed and (almost) complete disappearance
of the core columns.

23) [added 27 August, 2006] Explain the radioactive dust samples that
indicate a micronuclear weapon was used

The first person to prove explosives were NOT used in all of the above
with a full, detailed mathematical analysis covering all of the points
above will receive $1,000,000. The proof will be subject to
verification by a scientific panel of PHD engineers, physicists, and
lawyers.

This offer is void where prohibited by law.

Jimmy Walter




From SuperGh0d at gmail.com  Sun Sep  3 20:46:32 2006
From: SuperGh0d at gmail.com (SuperGh0d at gmail.com)
Date: 3 Sep 2006 17:46:32 -0700
Subject: how to get a filename's extension
Message-ID: <1157330792.234618.204030@i3g2000cwc.googlegroups.com>

Hello all,

I am new to python and I am having some difficulty obtaining the
extension of a file. I was looking at the re.match module but I am
completely overwhelmed by regular expressions. Is there an easier way
to get the extension for a file name like:

this.is.my.file.avi

I would just like to pull out the 'avi'

your help is greatly appreciated! :)



From sation at web.de  Mon Sep 25 09:46:57 2006
From: sation at web.de (Sven Ehret)
Date: Mon, 25 Sep 2006 15:46:57 +0200
Subject: Newbie question: PyQt & Form::init()
References: <ef8jbm$l8i$1@newsreader2.netcologne.de>
	<4nq42vFbgfogU1@uni-berlin.de>
Message-ID: <ef8mj2$p80$1@newsreader2.netcologne.de>

Diez B. Roggisch wrote:

> Sven Ehret wrote:
> 
>> Hello List,
>> 
>> I am trying to learn Python and followed the tutorial at
>> http://www.cs.usfca.edu/~afedosov/qttut/. Being happy that it works, I am
>> now trying to do my own project, but I am having problems with
>> initialization of my form.
>> 
>> I want to automatically fill a couple of comboboxes upon starting the
>> program. I read on the net that I simply have to add a function
>> called ?Form1.Init()? with the content I wish to have executed at start
>> time. However, it never gets executed, so it seems. When I re-write the
>> application to have the code executed at the press of a button, it works.
>> What am I doing wrong?
> 
> Show us more code, and we show you the problem. At least we can try then,
> until someone finally implements
> 
> from __future__ import mindreading
> 
> Diez

Oh, sorry. *blush*
here is my code (two files):

form1.py:
# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'form1.ui'
#
# Created: Mo Sep 25 15:38:56 2006
#      by: The PyQt User Interface Compiler (pyuic) 3.14.1
#
# WARNING! All changes made in this file will be lost!


from qt import *


class Form1(QDialog):
    def __init__(self,parent = None,name = None,modal = 0,fl = 0):
        QDialog.__init__(self,parent,name,modal,fl)

        if not name:
            self.setName("Form1")



        self.pushButton1 = QPushButton(self,"pushButton1")
        self.pushButton1.setGeometry(QRect(410,340,80,30))

        self.comboBox1 = QComboBox(0,self,"comboBox1")
        self.comboBox1.setGeometry(QRect(310,10,120,31))
        self.comboBox1.setSizeLimit(12)
        self.comboBox1.setMaxCount(12)

        self.comboBox2 = QComboBox(0,self,"comboBox2")
        self.comboBox2.setGeometry(QRect(431,10,60,31))

        self.buttonGroup1 = QButtonGroup(self,"buttonGroup1")
        self.buttonGroup1.setGeometry(QRect(10,50,480,200))

        self.pushButton3 = QPushButton(self,"pushButton3")
        self.pushButton3.setGeometry(QRect(200,320,101,24))

        self.textLabel1 = QLabel(self,"textLabel1")
        self.textLabel1.setGeometry(QRect(71,10,160,30))

        self.languageChange()

        self.resize(QSize(504,380).expandedTo(self.minimumSizeHint()))
        self.clearWState(Qt.WState_Polished)

        self.connect(self.pushButton1,SIGNAL("clicked()"),self.close)
        self.connect(self.comboBox1,SIGNAL("activated(const
QString&)"),self.AddMonthsToCombo)
       
self.connect(self.pushButton3,SIGNAL("clicked()"),self.AddMonthsToCombo)


    def languageChange(self):
        self.setCaption(self.__tr("Form1"))
        self.pushButton1.setText(self.__tr("Beenden"))
        self.buttonGroup1.setTitle(QString.null)
        self.pushButton3.setText(self.__tr("pushButton3"))
        self.textLabel1.setText(self.__tr("textLabel1"))


    def AddMonthsToCombo(self):
                import time
                self.comboBox1.insertItem("Januar")
                self.comboBox1.insertItem("Februar")
                self.comboBox1.insertItem("M??rz")
                self.comboBox1.insertItem("April")
                self.comboBox1.insertItem("Mai")
                self.comboBox1.insertItem("Juni")
                self.comboBox1.insertItem("Juli")
                self.comboBox1.insertItem("August")
                self.comboBox1.insertItem("September")
                self.comboBox1.insertItem("Oktober")
                self.comboBox1.insertItem("November")
                self.comboBox1.insertItem("Dezember")
                self.comboBox2.insertItem("2005")
                self.comboBox2.insertItem("2006")
                self.comboBox2.insertItem("2007")
                self.comboBox2.insertItem("2008")
                s = time.strftime("%B")
                t = time.strftime("%Y")
                self.comboBox1.setCurrentText(s)
                self.comboBox2.setCurrentText(t)
        

    def __tr(self,s,c = None):
        return qApp.translate("Form1",s,c)




this gets executed by this ?wrapper?-script as shown to me in the tutorial:

mygui.py

from qt import *
from form1 import *
import time
import sys
if __name__ == "__main__":
    app = QApplication(sys.argv)
    f = Form1()
    f.show()
    app.setMainWidget(f)
    app.exec_loop()





From rshepard at appl-ecosys.com  Sat Sep 16 13:06:25 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Sat, 16 Sep 2006 10:06:25 -0700 (PDT)
Subject: Coding Nested Loops
In-Reply-To: <m2bqpfeq7d.fsf@unique.fqdn>
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.155.1158356025.10491.python-list@python.org>
	<eeg5o2$226$00$1@news.t-online.com>
	<mailman.176.1158420580.10491.python-list@python.org>
	<m2bqpfeq7d.fsf@unique.fqdn>
Message-ID: <Pine.LNX.4.64.0609161002590.13961@salmo.appl-ecosys.com>

On Sat, 16 Sep 2006, Dan Sommers wrote:

> When you import random, all you're doing is importing the module; you have
> to specify any given attribute thereof:

Dan,

   I thought that was implied. For example, I use 'import wx' and can then
instantiate wx.frame, wx.dialogbox, etc. without explicitly importing each
one. Apparently different modules work differently.

>> ... 2) What are the differences between 'choice' and 'shuffle?'

> choice chooses one element of a given list and leaves the list itself
> alone; shuffle shuffles the list, presumably so that you can iterate
> through the elements yourself.

   OK. The former picks the element for you while with the latter we must
specify which element to pick.

   Thank you. This is all very good to know.

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From paddy3118 at netscape.net  Fri Sep  1 14:33:41 2006
From: paddy3118 at netscape.net (Paddy)
Date: 1 Sep 2006 11:33:41 -0700
Subject: python loops
In-Reply-To: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>
References: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>
Message-ID: <1157135621.639080.319060@h48g2000cwc.googlegroups.com>


Putty wrote:
> In C and C++ and Java, the 'for' statement is a shortcut to make very
> concise loops.  In python, 'for' iterates over elements in a sequence.
> Is there a way to do this in python that's more concise than 'while'?
>
> C:
> for(i=0; i<length; i++)
>
>
> python:
> while i < length:
> 			i += 1

Someone else gave an apt reply to a similar question before, but I
don't know when so I'll give the gist:
In languages like C and Java, the for loop index variable is often used
to iterate over members of a sequence or other data type.
In Python many of the data types can be directly iterated over without
having to increment a separate indexing value.

C type language:

length = length_finder(some_datatype);
for(i=0; i<length; i++){
  indexed_data = some_datatype[i]
 do_stuff(indexed_data)
}

Becomes the more elegant Python:

for indexed_data in some_datatype:
  do_stuff(indexed_data)


- Paddy.



From python-url at phaseit.net  Thu Sep 14 18:49:37 2006
From: python-url at phaseit.net (Jack Diederich)
Date: Thu, 14 Sep 2006 22:49:37 +0000 (UTC)
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (Sep 14)
Message-ID: <eecma1$v80$1@lairds.us>

QOTW:  "Regexps are a brittle tool, best tolerated in small doses." - Tim Peters

"Simplicity is prerequisite for reliability" - Edsger W. Dijkstra


    eval(repr(var)) sometimes works for serialization but don't count on it.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/71b54c23162ffcd9/

    More than you ever wanted to know about the types of regular expression
    engines and their history.
          http://groups.google.com/group/comp.lang.python/browse_thread/thread/cd20b4cabc6fe26/

    Folks discuss their favorite libraries that make multiple and parallel
    processing easier.
          http://groups.google.com/group/comp.lang.python/browse_thread/thread/ba9fe6b206e6beca/

    Could python be changed to have no reserved keywords?  How about we make
    the color of a variable change its meaning?  A romp through PL/I, FORTRAN,
    and Color Forth.
          http://groups.google.com/group/comp.lang.python/browse_thread/thread/cb0eae075930228a/

    Text editors for writing python.  Emacs and vi sit this one out and no
    flame war erupts.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/4aff7ef699633bf9/

    The string 'in' operator implementation is different between 2.4 and 2.5
    (in 2.5 it got faster)
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/114846082ffdb5d8/

    For small databases almost any will do.  Here are suggestions.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/5614505bc1f62986/

 Releases of Note
    Python 2.5 Release Candidate 2  - This is your last chance to contribute
    feedback before 2.5 Final.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/d2b9d202a1dbaa4e/

    XPN 0.6.5 - Multi-platform newsreader written in Python and GTK.
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/9366f96b404dc9c9/

    CoreBio 0.4 - a Python library for bioinformatics and computational biology
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/f28a8245087d589d/

    Leo 4.4.1.1 - Leo is a text editor, project manager, and more
        http://groups.google.com/group/comp.lang.python/browse_thread/thread/63a7a53e83b0fa9e/

 Upcoming Community Events
    Plone Conference 2006, October 25-27 (Seattle, Washington)
          http://plone.org/events/conferences/seattle-2006

    Open Source Developers Conference December 5-8 (Melbourne, Australia)
          http://www.osdc.com.au/

    PyCon 2007, February 23-25 (Dallas, TX)
          http://us.pycon.org/TX2007/HomePage

    RuPy 2007, April 7-8 (Poznan, Poland)
          http://rupy.wmid.amu.edu.pl/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Python411 indexes "podcasts ... to help people learn Python ..."
    Updates appear more-than-weekly:
        http://www.awaretek.com/python/index.html

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/python/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance.
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch

    Although unmaintained since 2002, the Cetus collection of Python
    hyperlinks retains a few gems.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
	http://www.python.org/dev/peps/pep-0042/

    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topic/python/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
There is *not* an RSS for "Python-URL!"--at least not yet.  Arguments
for and against are occasionally entertained.


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".  Write to the same address to unsubscribe.


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.


From matt at tplus1.com  Wed Sep 13 10:10:40 2006
From: matt at tplus1.com (Matthew Wilson)
Date: Wed, 13 Sep 2006 14:10:40 GMT
Subject: eval(repr(object)) hardly ever works
Message-ID: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>


I understand that idea of an object's __repr__ method is to return a
string representation that can then be eval()'d back to life, but it
seems to me that it doesn't always work. 

For example it doesn't work for instances of the object class:

In [478]: eval(repr(object()))
------------------------------------------------------------
   File "<string>", line 1
     <object object at 0xf233e8>
     ^
SyntaxError: invalid syntax

It seems to work for types like integers and dictionaries and lists,
but not for much else.

Any thoughts?


-- 
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles


From nemesis at nowhere.invalid  Sun Sep 17 12:47:29 2006
From: nemesis at nowhere.invalid (Nemesis)
Date: Sun, 17 Sep 2006 16:47:29 GMT
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<20060916174324.2237.20755.XPN@orion.homeinvalid>
	<q2iog21vr7sfgc2dhjb4jj5ld3nprbnbd4@4ax.com>
	<20060917074241.2241.57001.XPN@orion.homeinvalid>
	<eejs1t$rba$1@newsreader2.utanet.at>
Message-ID: <20060917164725.4194.30944.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Franz Steinhaeusler"
scriveva:

> Hello Nemesis,
>
>
> this I post with XPN! ;)
Good :-)

> My next try was a second newsserver.
> (It would be nice to have it in one installation,
> but priority is not so high)
>
> I have XPN in one directorry (for my default newsserver)
> and I installed XPN in a second directory for Gmane.

It is not necessary, if you are using the source version (and since we
are on comp.lang.python I think so) you can use the command line option
-c

python xpn.py -c your_dir

and XPN will store its configs and data in this directory.

> A user defineable Title bar as in Agent would be good.
> (Then I could name the first instance "My News" or so, and the 
> second one "Gmane". So easier navigating in Windows and also 
> the tips in the task bar could be helpful for that.

you can tweak the code if you want ;-)
the file is xpn.py


> The line spacing (vertically) in the header is a little higher than in
> wxPython programs or also in Forte agent. I suspect, this is a
> "feature" in PyGtk. narrower lines would display more headers, this
> means more headers would be visible at once.

but maybe the view will be a little more messed ... anyway I'm not sure
I can change the size, maybe it depends on the font size.

> Is Saving attachments possible? I didn't see a menu point, nor are the threads
> are marked, having an attachment.

no, XPN is definitively text-oriented. I'm not supporting attachments in
any way.

> An option to set X-No Archive default in the subscribed groups would be
> nice.

I don't like X-No-Archive ... but anyway you can set you custome header
to be used in every post you send in the Config Window (Posting tab)

Only an open thought:

[plugins]
> Would such an idea make sense for XPN?

yes but I should implement in some way the plugin support ... and I
don't know how to do it.


> XPN seems pretty stable and I enjoy this program more and more!

thank you very much.

-- 
"Se dovessi rinascere, farei l'idraulico." (Albert Einstein)
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From aahz at pythoncraft.com  Fri Sep 15 00:38:33 2006
From: aahz at pythoncraft.com (Aahz)
Date: 14 Sep 2006 21:38:33 -0700
Subject: question about including something like sqlite in python
References: <9tiNg.2735$No6.53971@news.tufts.edu>
Message-ID: <eedao9$e4k$1@panix3.panix.com>

In article <9tiNg.2735$No6.53971 at news.tufts.edu>,
John Salerno  <johnjsal at NOSPAMgmail.com> wrote:
>
>I was just thinking, since Python 3.0 is supposed to clean up a lot of 
>the unnecessary or redundant features of Python and make other things 
>more streamlined, does it seem to anyone that including SQLite goes 
>against this goal?

Nope.  You misunderstand the goals of 3.0 if you think that sqlite goes
against them.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From steven.bethard at gmail.com  Fri Sep  8 13:16:09 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 08 Sep 2006 11:16:09 -0600
Subject: change property after inheritance
In-Reply-To: <mailman.157.1157708547.5279.python-list@python.org>
References: <V_ALg.10274$YZ3.7565@trnddc03>
	<NcLLg.27806$CL6.8934@trnddc06>	<6YSdneDAk40_gp3YnZ2dnUVZ_qqdnZ2d@comcast.com>
	<mailman.157.1157708547.5279.python-list@python.org>
Message-ID: <yMydnTLi9t3KOJzYnZ2dnUVZ_tOdnZ2d@comcast.com>

Maric Michaud wrote:
> Le jeudi 07 septembre 2006 15:33, Steven Bethard a ?crit :
>> Well, lambda's not going away[1],
> 
> Sure, they won't.
> 
>> but there's no *need* for lambda here. 
>>   It could be written as::
> 
> Le jeudi 07 septembre 2006 17:16, George Sakkis a ?crit :
>> Sure, it *could*; whether it *should* is a different issue. I can't
>> imagine a case for absolute *need* of lambda, but there are several
>> cases where it is probably the best way, such as the one of this
>> thread.
> 
> I have no preferences here, I used lambdas because it's more compact but they 
> have also their drawback, when the function get a little more complex the 
> code is quickly confusing. The main advantage of the lambdas in this case is 
> to not pollute the class namespace.
> 
> Le jeudi 07 septembre 2006 23:48, Steven Bethard a ?crit :
>>  Try using one of the following recipies:
>>
>>      http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/408713
>>      http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/442418
> 
> The code i wrote was to demonstrate late binding is usually not needed (and 
> it's not the semantic of properties so it's a bit like "make Java in 
> Python").

If you're really this uncomfortable with writing your own descriptors, 
sure, you don't have to.  But descriptors are an integral part of Python 
-- new-style classes wouldn't have methods without them, nor could 
classmethod or staticmethod have been defined.  So defining a new 
descriptor is far from un-Pythonic.

> If you really want late binding, the first recipe may be a solution, but it 
> should be both simpler and should not introduce a new semantic (the functions 
> passed as strings is disappointing).

If you want to use the functions instead of their names, it's as simple 
as changing the __init__ to:

     def __init__(self, fget=None, fset=None, fdel=None, doc=None):
         self.getname = fget.__name__
         self.setname = fset.__name__
         self.delname = fdel.__name__
         self.__doc__ = doc

Then you can use the same signature as property.

STeVe


From theller at python.net  Tue Sep 19 15:38:40 2006
From: theller at python.net (Thomas Heller)
Date: Tue, 19 Sep 2006 21:38:40 +0200
Subject: new string method in 2.5 (partition)
In-Reply-To: <atXPg.9$1n3.69@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>	<4510425e$0$12250$636a55ce@news.free.fr>
	<atXPg.9$1n3.69@news.tufts.edu>
Message-ID: <eepgvu$ek$1@sea.gmane.org>

John Salerno schrieb:
> Bruno Desthuilliers wrote:
> 
>> Err... is it me being dumb, or is it a perfect use case for str.split ?
> 
> Hmm, I suppose you could get nearly the same functionality as using 
> split(':', 1), but with partition you also get the separator returned as 
> well.

Well, x.split(":", 1) returns a list of one or two elements, depending on x,
while x.partition(":") always returns a three-tuple.

Thomas



From jmdeschamps at gmail.com  Fri Sep 29 15:56:26 2006
From: jmdeschamps at gmail.com (jmdeschamps at gmail.com)
Date: 29 Sep 2006 12:56:26 -0700
Subject: windev vs python SOS
In-Reply-To: <451d56f3$0$22903$636a55ce@news.free.fr>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159528038.548533.304250@c28g2000cwb.googlegroups.com>
	<451d15cf$0$23901$636a55ce@news.free.fr>
	<1159547006.941109.237430@m73g2000cwd.googlegroups.com>
	<451d56f3$0$22903$636a55ce@news.free.fr>
Message-ID: <1159559786.073636.54470@k70g2000cwa.googlegroups.com>


Bruno Desthuilliers wrote:
> aaaWindev at gmail.com wrote:
> > Hi,
> >
> > Bruno Desthuilliers a ?crit :
> >> I've never met a programmer that "loved" Windev.
> >
> > I have met some here (I'm the guy with a mustache-just kidding but
> > actually I was there).
> >
> > http://www.pcsoft.fr/pcsoft/tdftech/2006/images/Paris/07-IMG_5853.jpg
> >
> > WinDev is widely used in France
>
> "widely used" ? Widely marketed, for sure, but last time I had to find a
> job, there where not that much Windev positions (3 in one year in the
> fifth french city) - much less than Java or .NET or (whatever your
> mainstream language here) - or even PHP/Javascript FWIW. And it was not
> better in other major french locations...
>
> (and please avoid us the usual marketing crap - been here, done that)
>
> > and that's a thing because a lot of
> > french programmers think that english tools "have to be better".
>
> I think that's one of the dumbiest thing I've ever read.
>
> Thread's over for me - keeping on polluting this group with anything
> related to this crap is a total waste of resources.
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in 'onurb at xiludom.gro'.split('@')])"

Two things  (Well three things) : 1- thanks Tim Golden for translating
the financial thingy!
2- I'm just back from the pc-soft site, and what do you know, I saw a
download menu (for upgrades), went there and was told (Cut'nPaste here)

CAUTION:
To download these modules, you must own a registered copy of WinDev 10
"English" or "International" version. Otherwise, you are not authorized
to download the modules below.
- Now I don't own a copy so it wouldn't be usaful since it's an
upgrade, but you know what? I hate this tone of voice ("you are not
authorized to ...") but that's ok, it just my feelings. So I go to read
testimonials, and wow playmobil, cool stuff - lots of prfetty playmobil
pics too, even 2 screen shots, excepts that even at 300%, you can't
make out what they are about. OK, so I'm a kid at heart - let's go see
the John Deere testi - Nice pics of tractors and such, another
unreadable screen shot... Eh!, think I, this is promotional stuff, so
its *normal* promotional stuff, lets that a look at the beast since
there is a big red "Download TRIAL VERSION" button by the windev 10
paragraph -so I click and get a "To download the WinDev trial version,
please fill the form below: " message, hummm but there is a download
button at the top of the form and then line annoncing optional
infromation, so I click again without filling the info, thank you, so
now I'm downloading windev 8 - that's before I cancel the job... hummm
again, with all the nice people here and elsewhere, at Microsoft, and
Oracle, and Sun ;-) that give out so much to to try and get there
technology known - and I'm NOT talking about the OpenSource region of
the world - It just makes me wonder, why can't you have an opinion and
disagree with your boss ... But then again, maybe your boss wrote those
testimonials on another life!
3-Re-reading some posts of this thread I'll permit myself an ultimate,
if third point:
"...What is cool about WinDev is that the language is closely embedded
with the GUI. " makes for great MVC apps I'm sure.

Jean-Marc



From bj_666 at gmx.net  Tue Sep 12 02:33:15 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Tue, 12 Sep 2006 08:33:15 +0200
Subject: How to get the package, file,
	and line of a method/function invocant?
References: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.12.06.33.14.274710@gmx.net>

In <1158038477.221439.15260 at e63g2000cwd.googlegroups.com>, metaperl wrote:

> # Of course I could cheat and pass it, but I don't want to:
> 
> directories = data.storage.logic(__file__)

Why do you consider a plain and simple solution cheating?

Ciao,
	Marc 'BlackJack' Rintsch


From http  Sun Sep 10 19:17:08 2006
From: http (Paul Rubin)
Date: 10 Sep 2006 16:17:08 -0700
Subject: ANN: Pocoo (bulletin board software) 0.1 beta released
References: <ee23mt$hd8$2@news.albasani.net>
Message-ID: <7x1wqjjoqz.fsf@ruckus.brouhaha.com>

Georg Brandl <g.brandl-nospam at gmx.net> writes:
> Pocoo <http://www.pocoo.org/> is a bulletin board software
> (aka. message board) written in Python, adhering to the WSGI
> standard. In the long term, it is meant to compete with systems like
> phpBB.

You too, huh?  I've also always wanted to write one of those.  Mine
would be performance-intensive.  I've never understood why the phpBB,
vBulletin, etc. systems that I use bog down so much.  It's a very
serious problem--the bigger boards I hang out on all have to use
multiple servers, resulting in big hosting bills ($1000's per month),
so they have to take advertising, hold fundraisers all the time, etc.
But the raw hardware really needed if the software were any good,
including adequate bandwidth, should fit within the cheap
managed-hosting servers (typically a 1U rack-mounted single processor
Celeron box for $100 a month or so) or on a VPS for smaller loads
($50/month or less).  That means the hosting fees can be paid out of
pocket by a few donors, getting rid of all kinds of fundraising
headaches and increasing organizational and content flexibility a lot.

So, I think it's not worth thinking about writing yet another BBS
unless it can handle a Slashdot-sized load on a commodity PC.  For
very large loads it should be able to use multiprocessor hardware
effectively (an 8-core Athlon server costs as much today as an entry
level engineering workstation of the 1990's).  I've even played with
the idea of using MPI for this ("imagine a Beowulf cluster of...")
which would let you couple multiple boxes together with ordinary LAN
hardware, letting you scale straightforwardly to hundreds of cpu's.  I
think it should be possible to do all this, using a system still
written mostly in Python.

My suggestions:

1) ditch the SQL back end, or at least don't depend on it.  Someone
had the clever idea of using an NNTP back end, using a news server (or
a network of them) as a message store.  That gets you all kinds of
features for free.  Otherwise, keep all messages in an mmap'd disk
file that can be shared in memory between multiple processes.  Adding
messages would append to the file, and to some kind of log that would
reconstruct in-memory structures in the event of server restart.
You'd also need some IPC synchronization scheme.  

2) Look at the architecture of WebCrossing and also of OKWS (www.okws.org). 

3) Hmm I had some more, I'll keep thinking.


From steve at holdenweb.com  Sat Sep  9 07:21:38 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 09 Sep 2006 12:21:38 +0100
Subject: convert loop to list comprehension
In-Reply-To: <1157761731.042621.77150@p79g2000cwp.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>	<Xns9839C4FD80E2rtwfreenetREMOVEcouk@216.196.109.145>
	<1157761731.042621.77150@p79g2000cwp.googlegroups.com>
Message-ID: <edu82v$gq2$3@sea.gmane.org>

bvdp at xplornet.com wrote:
[...]
> 
> Cool ... and damn but you guys are fast with the answers. This appears
> to work find, but in a quick and dirty test it appears that the [list]
> version takes about 2x as long to run as the original loop. Is this
> normal?
> 
No hard and fast information, but as a general rue of thumb replacing 
calls to a c function like list.extend() with iteration inside a list 
comprehension is very likely to be slower.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From liquidsnk at gmail.com  Tue Sep  5 18:09:20 2006
From: liquidsnk at gmail.com (Liquid Snake)
Date: Tue, 5 Sep 2006 19:09:20 -0300
Subject: any portable way to print? (and i mean on a printer)
Message-ID: <93fc17a50609051509k50fdb2f2j4aefcf4e69a8f4c8@mail.gmail.com>

I think my question is clear.., is there any way to print any text on a
portable way?..., and actually, i don't know how to print at all.., just
give me some pointers, name a module, and i can investigate for myself..
sorry for my english, thanks in advance..
ps: i prefer a Standard Library module.
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From ptmcg at austin.rr._bogus_.com  Fri Sep 22 17:28:48 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 22 Sep 2006 21:28:48 GMT
Subject: String Pattern Matching: regex and Python regex documentation
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com><45143567.2000903@lazaridis.com>
	<mailman.476.1158952713.10491.python-list@python.org>
Message-ID: <kAYQg.4478$nX4.3674@tornado.texas.rr.com>

"Steve Holden" <steve at holdenweb.com> wrote in message 
news:mailman.476.1158952713.10491.python-list at python.org...
<snip>
>
> Ilias Lazardis meets Xah Lee. I just *know* we're in for trouble now ...
>
> regards
>  Steve

A sign of the End Times, perhaps?

-- Paul




From flyingisfun1217 at gmail.com  Tue Sep 26 16:46:47 2006
From: flyingisfun1217 at gmail.com (flyingisfun1217 at gmail.com)
Date: 26 Sep 2006 13:46:47 -0700
Subject: AN Intorduction to Tkinter
Message-ID: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>

Hi,

I'm too lazy to retype my "problem", so here's the message I sent to
the py2exe mailing list (not quite the right place, but thankfully, I
was redirected here...)

I know that the most known tkinter intro guide at the time is "An
Intorduction to Tkinter" by Frederick Lundh, but after trying some of
the examples, I noticed that they did not work, and questioned what
version of tkinter it was written for. When I saw that it was written
(actually, copyrighted) in 1999, I figured that a new(er) version of
Tkinter had come out since then, changing how some of the code examples

work.

Does anybody know of a guide as comprehensive as this, but written for
one of the more recent Tkinter modules?

Thanks for your help!

Tanner



From paul at boddie.org.uk  Tue Sep 12 17:54:46 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 12 Sep 2006 14:54:46 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
	<mailman.374.1158080179.5279.python-list@python.org>
Message-ID: <1158098086.576040.69310@e63g2000cwd.googlegroups.com>

Fredrik Lundh wrote:
> Paul Boddie wrote:
>
> > To be fair, that text originates in section 12.3, referring to input
> > parameters to procedures.
>
> which is the section that section 4.1 ("data types") refers to for more
> details on mappings between host data and SQL data.  guess it depends on
> how you look at the different layers: if you're using SQLite via the DB-
> API, are you using "SQL" or an "SQL Agent"?

Don't ask me! :-) I found it awkward enough scrolling up and down an n
* 100 page plain text document formatted for a line printer in my Web
browser, let alone spending time working out the cross-references
throughout the text, all in the five to ten minutes I spent looking
this up.

Nevertheless, one could read the "value of any input parameter provided
by the SQL-agent falls outside the set of allowed values of the data
type of the parameter" as being something different from supplying a
value of one particular data type in a place where another data type is
expected. And I thought that the quote about valid values in insert
statements provided a more categorical summary of the specification's
position on such matters. Certainly, it's hard to read that and then to
claim that a string is acceptable in places where a number is expected,
regardless of what section 12.3 is trying to say.

Paul



From larry at hastings.org  Fri Sep 29 13:47:28 2006
From: larry at hastings.org (Larry Hastings)
Date: 29 Sep 2006 10:47:28 -0700
Subject: PATCH: Speed up direct string concatenation by 20+%!
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
	<mailman.932.1159533269.10491.python-list@python.org>
	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>
	<mailman.948.1159542291.10491.python-list@python.org>
	<1159545255.339364.299020@k70g2000cwa.googlegroups.com>
	<mailman.955.1159545644.10491.python-list@python.org>
	<1159546522.251704.301530@b28g2000cwb.googlegroups.com>
	<mailman.956.1159547188.10491.python-list@python.org>
Message-ID: <1159552048.354214.198180@e3g2000cwe.googlegroups.com>

Fredrik Lundh wrote:
> so what does the benchmark look like if you actually do this ?

Okay, timing this:
  x = ""
  for i in range(100000):
    x += "a"
  t = x[1] # forces the concat object to render

The result:
  Python 2.5 release: 30.0s
  Python 2.5 locally built: 30.2s
  Python 2.5 concat: 4.3s
  Improvement: 600% (1/7 of the time)


/larry/



From jjl at pobox.com  Thu Sep  7 18:40:02 2006
From: jjl at pobox.com (John J. Lee)
Date: Thu, 07 Sep 2006 22:40:02 GMT
Subject: Testing a website with HTTPS login and cookies
References: <mailman.14.1157459879.5279.python-list@python.org>
Message-ID: <87odtrmhbx.fsf@pobox.com>

Hari Sekhon <hpsekhon at googlemail.com> writes:

> I want to create a test that will do a proper login test to a web site
> but I need some pointers.
> 
> I need to login to the website by accessing an https url and posting
> to that, which should return a very small 302 reply with the address
> of the internal page. I need to take that page href and then access
> it, if I can do all that then the test passes. Of course because I
> have to access two urls I also need cookies for session handling. I've
> already tried bash which would have worked but for the cookie handling
> and webinject which is written in Perl, but this doesn't do exactly
> what I want in terms of output so I'd rather write something
> myself. (I'm also curious as to the best way to do this)
> 
> If anybody knows how to do this could they please give me a quick
> pointer and tell me what libraries I need to go read up on?

You could just use httplib, or urllib2 (using
urllib2.HTTPCookieProcessor) if you need to handle cookies.  However,
personally I prefer using a higher-level tool that knows a bit more
about web-browser behaviour, e.g.:

http://www.idyll.org/~t/www-tools/twill.html
http://cheeseshop.python.org/pypi?%3Aaction=display&name=ZopeTestbrowser


both of which are based on:

http://wwwsearch.sourceforge.net/mechanize/


(BTW, I hear there's work going on on an implementation of
zope.testbrowser that delegates to Selenium instead of to mechanize --
cool.)


John


From dcrespo at gmail.com  Mon Sep 11 16:19:08 2006
From: dcrespo at gmail.com (Daniel Crespo)
Date: 11 Sep 2006 13:19:08 -0700
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <mailman.285.1158002192.5279.python-list@python.org>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
	<4505B54C.30905@designaproduct.biz>
	<mailman.285.1158002192.5279.python-list@python.org>
Message-ID: <1158005948.883368.185320@m73g2000cwd.googlegroups.com>


Laszlo Nagy wrote:
> >
> >
> > If you have OpenSSL installed, you can do the following:
> >
> > 1. Create a new directory and place the two attached files in it
> > (openssl.cnf and generate.sh)
> > 2. Run  "chmod +x gen_cert.sh ; ./gen_cert.sh  yourdomain.com"
> I meant generate.sh instead of gen_cert.sh.
>
> Under windows it won't work. But you can easily convert generate.sh into
> generate.bat. :-)
>
>   Laszlo

I'm on Windows...
I'm also trying to get OpenSSL installed, but I need compilers and all
that stuff. Before getting involved in that, do you know of a faster
way to have it installed?

Thanks

Daniel



From jan.dries at dcube-resource.be  Thu Sep 28 10:48:57 2006
From: jan.dries at dcube-resource.be (Jan Dries)
Date: Thu, 28 Sep 2006 16:48:57 +0200
Subject: XSLT speed comparisons
In-Reply-To: <451BD332.1080505@websafe.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<451BD332.1080505@websafe.com>
Message-ID: <451BE0D9.40808@dcube-resource.be>

Larry Bates wrote:
> Damian wrote:
[...]
> > What I've got is:
> > two websites, one in ASP.NET v2 and one in Python 2.5 (using 4suite for
> > XML/XSLT)
> > both on the same box (Windows Server 2003)
> > both using the same XML, XSLT, CSS
> >
> > The problem is, the Python version is (at a guess) about three times
> > slower than the ASP one. I'm very new to the language and it's likely
> > that I'm doing something wrong here:
[...]
> >
> For max speed you might want to try pyrxp:
> 
> http://www.reportlab.org/pyrxp.html
> 

Except that pyrxp, to the best of my knowledge, is an XML parser and 
doesn't support XSLT, which is a requirement for Damian.

Regards,
Jan


From richardjones at optushome.com.au  Thu Sep 14 05:19:59 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Thu, 14 Sep 2006 19:19:59 +1000
Subject: [ANN] IronPython Community Edition 1.0r1
References: <mailman.61.1158211527.10491.python-list@python.org>
Message-ID: <45091ebf$0$5108$afc38c87@news.optusnet.com.au>

Sanghyeon Seo wrote:
> I am happy to announce IronPython Community Edition (IPCE for short)
> 1.0 revision 1, based on IronPython 1.0, to the world.

Is there any word on ctypes for IronPython? The last I can find out on
the "tubes" is a promising message dated back in June:

http://lists.ironpython.com/pipermail/users-ironpython.com/2006-June/002500.html

All messages since then seem to refer just to that one post.


    Richard



From wildemar at freakmail.de  Thu Sep 14 13:12:33 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 14 Sep 2006 19:12:33 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <7.0.1.0.2.20060914092427.066feab8@rcblue.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>	<mailman.48.1158174903.10491.python-list@python.org>	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>	<mailman.92.1158241915.10491.python-list@python.org>	<1158249094.605954.93330@m73g2000cwd.googlegroups.com>
	<7.0.1.0.2.20060914092427.066feab8@rcblue.com>
Message-ID: <45098D81.6080308@freakmail.de>

Dick Moores wrote:
>> to run a script.. you can 'dock' jython in the sides of the editor or
>> bottom, and import from the buffer or load it.. or fire jython up from
>> the plugin menu
> 
> Doesn't sound easy. With UliPad (or IDLE, for that matter) just hit F5.

Which you can do with jEdit just as well. It takes just a bit of reading 
first. jEdit is by no means a lightweight editor, and its power comes at 
the price of some getting involved on the user's part. Same dilemma with 
vi/emacs, but just not as tough, as I found.


From bdesth.quelquechose at free.quelquepart.fr  Sun Sep 10 12:15:51 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sun, 10 Sep 2006 18:15:51 +0200
Subject: egg and modpython
In-Reply-To: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
Message-ID: <4504371a$0$628$636a55ce@news.free.fr>

Wensheng a ?crit :
> I installed pysqlite2 using easy_install.
> and got this when using it from modpython:
> --------------------------------------------------------------------------------------------------
> Mod_python error: "PythonHandler etc.modpython"
> 
> Traceback (most recent call last):
> 
(snip)
> 
> ExtractionError: Can't extract file(s) to egg cache
> 
> The following error occurred while trying to extract file(s) to the
> Python egg
> cache:
> 
>   [Errno 13] Permission denied: '/var/www/.python-eggs'
> 
> The Python egg cache directory is currently set to:
> 
>   /var/www/.python-eggs
> 
> Perhaps your account does not have write access to this directory?  You
> can
> change the cache directory by setting the PYTHON_EGG_CACHE environment
> variable to point to an accessible directory.
> ----------------------------------------------------------------------------
> 
> Can peak developers fix this please?

Why should they "fix" something that's
1/ documented
    -> http://peak.telecommunity.com/DevCenter/EggFormats#zip-file-issues
2/ not a an egg specific issue
3/ really just a configuration/permission problem

(snip)

> in the mean time, I just have to use old "download, unzip/untar &&
> python setup.py install" way.

No - you have to read the manual and fix you configuration. FWIW, the 
above traceback gives far enough clues (it's even written in all letters).

Or you may read easy_install's doc to avoid installing zipped eggs:
http://peak.telecommunity.com/DevCenter/EasyInstall#compressed-installation

HTH


From 2006 at jmunch.dk  Sat Sep 23 10:15:49 2006
From: 2006 at jmunch.dk (Anders J. Munch)
Date: Sat, 23 Sep 2006 16:15:49 +0200
Subject: QuoteSQL
In-Reply-To: <ef38i2$6tb$2@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>
Message-ID: <451541db$0$4171$ba624c82@nntp02.dk.telia.net>

Lawrence D'Oliveiro wrote:
> Why doesn't MySQLdb provide a function like this:
> 
> def QuoteSQL(Str, DoWild) :
>     """returns a MySQL string literal which evaluates to Str. Needed
>     for those times when MySQLdb's automatic quoting isn't good enough."""

Presumably because you're expected to use placeholders.  When is that 
not good enough?

>         elif Ch == "'" or Ch == "\"" or Ch == "\\" :
>             Ch = "\\" + Ch

Always sad to see an SQL DBMS willfully violate the SQL standard.

- Anders


From srikrishnamohan at gmail.com  Thu Sep 14 08:25:53 2006
From: srikrishnamohan at gmail.com (km)
Date: Thu, 14 Sep 2006 17:55:53 +0530
Subject: memory
Message-ID: <f4cc03640609140525o17988c5bwd26b4f9d77c6231d@mail.gmail.com>

Hi all,
Is there any module to limit the memory usage of the python program ?
regards,
KM
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From gagsl-py at yahoo.com.ar  Tue Sep 26 19:34:55 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 20:34:55 -0300
Subject: IDLE - Customizing output format
In-Reply-To: <1159295354.259058.52990@i42g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<mailman.544.1159134982.10491.python-list@python.org>
	<1159295354.259058.52990@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926203049.040dda58@yahoo.com.ar>

At Tuesday 26/9/2006 15:29, Ilias Lazaridis wrote:

> >  >>> def f(obj):
> >       print '    ' + repr(obj)
> >
> >  >>> sys.displayhook = f
>
>I've placed this code within /Lib/sitecustomize.py, but have one
>strange result:
>
> >>> from talker import *
> >>> t = Talker()
> >>> t.sayHello
>   : <bound method Talker.sayHello of <talker.Talker instance at
>0x00DEA198>>
> >>> t.sayHello()
>Hello world
>   : None
> >>>
>
>1st: "Hello world" comes still on the beginning.
>2nd: I got this "None"

The replacement should be a bit more complicated, taking None into 
account - see the original PEP for details 
http://www.python.org/dev/peps/pep-0217/
And notice that this replaces the output of *evaluated* expressions, 
not any print statement executed inside your code.


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From prudek at bvx.cz  Sat Sep 16 05:18:25 2006
From: prudek at bvx.cz (Milos Prudek)
Date: Sat, 16 Sep 2006 11:18:25 +0200
Subject: xmlrpc, extract data from http headers
In-Reply-To: <1158364314.135181.129740@d34g2000cwd.googlegroups.com>
References: <mailman.133.1158333835.10491.python-list@python.org>
	<1158364314.135181.129740@d34g2000cwd.googlegroups.com>
Message-ID: <200609161118.27301.prudek@bvx.cz>


> Overload the _parse_response method of Transport in your
> BasicAuthTransport and extract headers from raw response. See the
> source of xmlrpclib.py in the standard library for details.

Thank you. 

I am a bit of a false beginner in Python. I have written only short scripts. I 
want to read "Dive into Python" to improve my knowledge. Your advice is 
perfect. It is my fault that I need a little more guidance.

I am not sure how the headers will be passed from Transport to the instance of 
ServerProxy. That is, if I change the _parse_response method, how do I 
retreive the headers using the ServerProxy command?


-- 
Milos Prudek


From scott.daniels at acm.org  Fri Sep  8 15:32:47 2006
From: scott.daniels at acm.org (Scott David Daniels)
Date: Fri, 08 Sep 2006 12:32:47 -0700
Subject: Best Python Books and Sites
In-Reply-To: <1157743157.594372.234280@p79g2000cwp.googlegroups.com>
References: <1157743157.594372.234280@p79g2000cwp.googlegroups.com>
Message-ID: <4501be2b$1@nntp0.pdx.net>

VV wrote:
> I recently launched a question answer site that connects people with
> problems to those with solutions. We let people with problems pay
> solution providers $0.25 for problems in over 100 categories.
...
> What are the best three sites for python information?
> What are the best three python books they own?

Sounds great!  Send me $1.50 and I'll send you my six answers.

--Scott David Daniels
scott.daniels at acm.org


From mikeowens at gmail.com  Tue Sep 12 11:35:46 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 10:35:46 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158042568.767805.221940@m73g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
Message-ID: <df2316bd0609120835h2cb811b7k7f1026b406a9439@mail.gmail.com>

On 11 Sep 2006 23:29:28 -0700, mensanator at aol.com <mensanator at aol.com> wrote:

> But it was stated in the sqlite docs that ALL SQL databases
> use static types implying that sqlite will be incompatible
> with any "heavy" database should the need arise to migrate
> upwards. The issue is not that there will be compatibilty
> problems with any data migration but that the truth is exactly
> opposite of what's claimed in Section 13.13.

Implying? There's a solid word. Migrating data from SQLite to other
databases is no more difficult or easy than migrating data to any
other database. Do you think this is ever trivial? It's as hard or as
easy as you make it. No database can just take any schema and the data
you put in it and just magically convert that schema/data to
flawlessly work in any arbitrary database of your choosing. Some
databases have tools to help with this, but they still are not
perfect.

> I'm not saying sqlite can't be used, what I'm asking for
> is that the documentation lay the facts out and I'll decide
> whether I can make this work in my application. Lying about
> it makes you sound like Microsoft.

Lying? Whose lying? Where on the website is there a lie about
anything? From what I can tell, you've not taken the time to read the
documentation or post anything to the mailing list. You've just posted
jeremiads on the Python list.

Don't like the documentation? Ever volunteered to help out? Ever
posted any suggestions on the list or report a bug?  Do you really
think that open source projects exists to serve you and meet your
standards? Do you think that free code and documentation just falls
like manna from heaven? Do you honestly think the two core developers
of SQLite have some secret agenda to deceive you or the world into
using SQLite?

> > Of course you could restrict yourself
> > to, by example, SQL92 entry level and be a lot more compatible.
> > But if I'm using a nice OO language like Python which lets me bind
> > *any* object to *any* name, why should be wrong to bind *any* object
> > to *any* database column?
>
> But SQL isn't OO, it's relational. That means JOINing tables
> together on a common field. In theory, due to the comparison
> hierarchy, it is impossible to do JOINs with dynamic typing
> since different types can never be equal. In practice, the type
> affinity kluge trys to work around this but can't do anything
> if the string doesn't look like an integer when a text field
> attempts to JOIN to an interger field.

Unless you ensure that the correct types are put int the column to
begin with, which is entirely possible with SQLite, as I've already
demonstrated. And if that's just too much to bear, you can still do an
inner join by explicitly casting the two columns in the join
constraint to a common desired type. Want to know how? Read the
documentation.


From john106henry at hotmail.com  Sat Sep  9 13:06:16 2006
From: john106henry at hotmail.com (John Henry)
Date: 9 Sep 2006 10:06:16 -0700
Subject: Building Python Based Web Application
In-Reply-To: <1157757866.251475.216080@m79g2000cwm.googlegroups.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
	<mailman.183.1157752647.5279.python-list@python.org>
	<1157755872.665137.230470@m73g2000cwd.googlegroups.com>
	<1157757866.251475.216080@m79g2000cwm.googlegroups.com>
Message-ID: <1157821576.314486.14960@b28g2000cwb.googlegroups.com>


Adam Jones wrote:
> John Henry wrote:
> > Hi folks.
> >
> > I am interested on this topic as well.
> >
> > If my application is not database related, what would be a good choice?
> >
> > I have clients that wish to use my Python applications but I am not
> > willing to give them the code.  So, I am thinking about setting it up
> > as a web based application and let them run it from their browser.   If
> > things go well, may be I can charge them for usage later.
> >
> > The application will involve getting a data file from the user, do some
> > processing, and return a result file to the user.   Very modest - to
> > start.
>
> For that kind of usage I don't know if any of the big name web
> frameworks would be worth the effort, especially if returning a result
> file entails making it available for download instead of handing it
> back in the form of an HTML page. At that point all you would really
> need is a controller to handle most of the details of working in HTTP
> and maybe a templating system to help out with the HTML.
>
> The only controller that is available independently that I can comment
> on usefully is Cherrypy. It works pretty well, can run its own web
> server if you like, and seems like it would be simple enough to use for
> what you are talking about.
>
> Without knowing more about your requirements that would be my
> suggestion. I am sure there are other people on this group with more
> experience here who could give more useful commentary.
> 
> -Adam

Thanks, I am checking out CherryPie



From wuwei23 at gmail.com  Thu Sep 21 01:26:39 2006
From: wuwei23 at gmail.com (alex23)
Date: 20 Sep 2006 22:26:39 -0700
Subject: view page source or save after load
References: <mailman.373.1158814163.10491.python-list@python.org>
Message-ID: <1158816399.831104.148250@b28g2000cwb.googlegroups.com>

zephron2000 wrote:
> I need to either:
> 1. View the page source of a webpage after it loads
> or
> 2. Save the webpage to my computer after it loads (same as File > Save
> Page As)
> urllib is not sufficient (using urlopen or something else in urllib
> isn't going to do the trick)

You don't really say _why_ urllib.urlopen "isn't going to do the
trick". The following does what you've described:

import urllib
page = urllib.urlopen('http://some.address')
open('saved_page.txt','w').write(page).close()

If you're needing to use a browser directly and you're running under
Windows, try the Internet Explorer Controller library, IEC:

import IEC
ie = IEC.IEController()
ie.Navigate('http://some.address')
page = ie.GetDocumentHTML()
open('saved_page.txt','w').write(page.encode('iso-8859-1')).close()

(You can grab IEC from http://www.mayukhbose.com/python/IEC/index.php)

Hope this helps.

-alex23



From fredrik at pythonware.com  Wed Sep 27 14:02:05 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 20:02:05 +0200
Subject: Why don't optional mutable objects show up in vars(func)?
In-Reply-To: <1159377747.5147.0.camel@localhost.localdomain>
References: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
	<1159377747.5147.0.camel@localhost.localdomain>
Message-ID: <efeeat$348$1@sea.gmane.org>

Sean Hammond wrote:

>>>>> def func(x, y=[]):
>> ...     y.append(x)
>> ...     print y
>> ...
>>
>> y is initialized when the function is imported, not when the function
>> is executed.
> 
> I thought it was initialised the first time the function gets called?

it's initialized (in the surrounding context) when the "def" statement 
is executed.

</F>



From fredrik at pythonware.com  Tue Sep 12 06:23:14 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 12:23:14 +0200
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158041908.842965.145530@m73g2000cwd.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>	<1158040245.635848.169000@h48g2000cwc.googlegroups.com>
	<1158041908.842965.145530@m73g2000cwd.googlegroups.com>
Message-ID: <ee61qi$me1$1@sea.gmane.org>

Licheng Fang wrote:

The idea is like this:
> 
> (*INT) = \d+
> (*DECIMAL) = (*INT)\.(*INT)
> (*FACTION) = (*DECIMAL)/(*DECIMAL)
> (*NUMERALS) = (*FACTION)|(*DECIMAL)|(*INT)
> ... ...
> 
> What's inside the sytactically wrong (* and ) is something to be
> replaced, and then I wrote a little script to do the string
> substitution

what's hiding under those ellipses?  things like "TERM" and "FACTOR" and 
"EXPRESSION", perhaps?

</F>



From johnjsal at NOSPAMgmail.com  Sat Sep 30 12:37:07 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 12:37:07 -0400
Subject: creating a small test server on my local computer
In-Reply-To: <1159600814.255059.56690@m73g2000cwd.googlegroups.com>
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
	<efjskl$23j$1@mlucom4.urz.uni-halle.de>
	<1159600814.255059.56690@m73g2000cwd.googlegroups.com>
Message-ID: <451e9db3$0$14736$c3e8da3@news.astraweb.com>

Ant wrote:
> Mirco Wahab wrote:
>> Thus spoke John Salerno (on 2006-09-29 21:13):
> ...
>> My advice would be (because Apache installations on
>> WinXP don't usually support Python (except pulling
>> the whole thing into each CGI invocation) - download
>> and install a VMWare Player
> 
> This sounds a horribly complicated way of doing things. If you read the
> OP's post, it seems he is simply trying to serve straight HTML pages
> (but with Server Side Includes) locally for testing, rather than having
> to pester his operations guys to put them up on the company servers.
> 
> If it's just HTML and SSI, then Apache is the easy answer on XP. The
> download is a simple .msi installer, and you'll just be able to drop
> the html files in the htdocs directory to start serving them.
> (http://httpd.apache.org/download.cgi)

Thanks! I'll look into this.


From yaru22 at gmail.com  Mon Sep  4 00:12:18 2006
From: yaru22 at gmail.com (yaru22)
Date: 3 Sep 2006 21:12:18 -0700
Subject: What does mod_python.publisher handler do?
Message-ID: <1157343138.145034.103500@m79g2000cwm.googlegroups.com>

I was reading Chapter 6.1 in mod_python manual at www.python.org.

The manual simply says:

The publisher handler is a good way to avoid writing your own handlers
and focus on rapid application development.

I still don't understand what this publisher handler is for.

Can someone elaborate the above phrase with some examples please?

Thanks in advance.

Regards,
Brian



From rtw at freenet.co.uk  Thu Sep 14 10:32:17 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Thu, 14 Sep 2006 09:32:17 -0500
Subject: xinclude and pathnames
References: <ee9231$mpj$1@foggy.unx.sas.com> <eebkgl$u90$1@foggy.unx.sas.com>
Message-ID: <Xns983E9DE2BCAB7rtwfreenetREMOVEcouk@216.196.109.145>

Tim Arnold wrote in news:eebkgl$u90$1 at foggy.unx.sas.com in
comp.lang.python: 

> "Tim Arnold" <tiarno at sas.com> wrote in message 
> news:ee9231$mpj$1 at foggy.unx.sas.com...
>> I'm using ElementTree to access some xml configuration files, and
>> using the module's xinclude capability. I've got lines like this in
>> the parent xml file (which lives in the same directory as the
>> included xml file): <xi:include 
>> href="/dept/app/doc/current/en/xml/asdf/asdf_syntaxterms.xml"/>
>>
>> When I started the project it was Unix-only; this worked fine. Now I
>> have users who want to use the system on Windows and of course that
>> directory path doesn't exist on Windows, but it is available on the
>> network using a name like
>> \\ladida\current\en\xml\asdf\asdf_syntaxterms.xml 
>>
>> if relative paths worked, I could imagine
>> <xi:include href="asdf_syntaxterms.xml" /> would work.
>> Also,the file can be read via an http server.
>>
>> My question: is there a way to make xinclude work with relative paths
>> or perhaps urls?
>> Any ideas welcome--to me it looks like I'll have to restructure this
>> part of the system since I've basically programmed myself into a
>> corner. 
>>

According to the docs:  http://effbot.org/zone/element-xinclude.htm

The default handler just sees the href value as a filename, so you
should be able to use a relative path if you os.chdir() to the working
directory before processing you xml file.

I just ran a 3 line sample to make sure os.chdir() works with network 
paths, which it did.

Rob.


From timr at probo.com  Wed Sep 13 02:48:16 2006
From: timr at probo.com (Tim Roberts)
Date: Wed, 13 Sep 2006 06:48:16 GMT
Subject: Validation of email
References: <mailman.350.1158067572.5279.python-list@python.org>
Message-ID: <ebafg2p46hsohrdeko3jepgj0u97def5e2@4ax.com>

Norman Khine <norman at khine.net> wrote:
>
>What is the best way to generate a long authentication string and email
>this so that the user can reply and verify that the email address they
>have provided is authentic, similar I guess to the way Bugzilla works?
>
>Should this be server side or client?
>
>How would one tackle an expiry limit on this - i.e. set the string a
>time limit?
>
>Any useful links of implementations in python are most welcomed.

Mailman does this kind of thing when you sign on to a mailing list
(assuming the list is configured to require confirmation).  Mailman is
written in Python.

http://www.gnu.org/software/mailman/index.html
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From xah at xahlee.org  Sun Sep 17 12:50:09 2006
From: xah at xahlee.org (Xah Lee)
Date: 17 Sep 2006 09:50:09 -0700
Subject: String Pattern Matching: regex and Python regex documentation
Message-ID: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>

the Python regex documentation is available at:
http://xahlee.org/perl-python/python_re-write/lib/module-re.html

Note that, i've just made the terms of use clear.

Also, can anyone answer what is the precise terms of license of the
official python documentation? The official python.org doc site is not
clear.

Note also, that the regex syntax used by Perl is the same as Python.
So, this section
 http://xahlee.org/perl-python/python_re-write/lib/re-syntax.html
which contains clear explanation of regex syntax, will be of interest
to Perl programers as well.

If you are studying regex, you might also be interested in this lisp
doc:
http://xahlee.org/elisp/Regular-Expressions.html

Also note, that the regex syntax, is one of unix's $free$ fuckup that
has damaged a entire computer industry for decades. ($free$ as drugs
given to children)

For some examples of corrective steps, see:

? Scsh manual, Chapter 6: Pattern-matching strings with regular
expressions
http://www.scsh.net/docu/html/man-Z-H-7.html

? Mathematica Book, section 2.8.4 String Patterns
http://documents.wolfram.com/mathematica/book/section-2.8.4

  Xah
  xah at xahlee.org
? http://xahlee.org/



From hg at nospam.com  Thu Sep 14 07:44:55 2006
From: hg at nospam.com (hg)
Date: Thu, 14 Sep 2006 06:44:55 -0500
Subject: socket and threading ... bad file descriptor
Message-ID: <FmbOg.138434$LF4.40041@dukeread05>

Hi,

I have two classes, one listens and accepts connections, gets the
socket, reads the first byte from the opened socket then launches a
thread (threading) and gives it the socket identifier.

The first time the thread attempts to read from the given socket,
socket.py raises a bad file descriptor in _dummy.

I tried using plain threads with the same problem.

Any clue ?

Thanks,

hg


From pavlovevidence at gmail.com  Mon Sep  4 17:36:25 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 4 Sep 2006 14:36:25 -0700
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <1157405785.276134.118340@m79g2000cwm.googlegroups.com>


alf wrote:
> Hi,
>
> I have a reference to certain objects. What is the most pythonic way to
> test for valid reference:
>
> 	if obj:
>
> 	if None!=obs:
>
> 	if obj is not None:

If you're checking whether an object is None or not, the third is the
best way.

Some people might say you should use the first: this works sometimes,
but sometimes an object that is not None can be false, in which case
this test will fail.  (I'll give you an example of one place where it
bit me: in ElementTree.  An Element is false if there are no
subelements, thus to test whether a certain element exist, you can't
just say "if aaa.find('bbb')", because a bbb tag exists, it is false
unless it has subelements of its own.  You must instead say "if
aaa.find('bbb') is not None".)

The second test is slower than the first and adds nothing.  Whether
something is None is an identity test; identity tests should use is.


Carl Banks



From harbingerofpeace at post.com  Sun Sep 24 12:28:14 2006
From: harbingerofpeace at post.com (Pete)
Date: 24 Sep 2006 09:28:14 -0700
Subject: What is the best way to "get" a web page?
In-Reply-To: <0001HW.C13C42D1004FA3C6F0488530@news.individual.de>
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
	<0001HW.C13C42D1004FA3C6F0488530@news.individual.de>
Message-ID: <1159115294.060735.131990@d34g2000cwd.googlegroups.com>

> > Can anyone point me to a tutorial or other reference on how to "get" all
> > of the html contents at a particular page?
>
> Why not use httrack?
>
> http://www.satzbau-gmbh.de/staff/abel/httrack-py/
>
> Sincerely,
>
> Wolfgang Keller
>
> --
> My email-address is correct.
> Do NOT remove ".nospam" to reply.

Thanks for the tip. I'll check that out. Is that your code?
--
Pete



From isalazar80 at yahoo.com.mx  Mon Sep 18 20:10:50 2006
From: isalazar80 at yahoo.com.mx (citlaly)
Date: 18 Sep 2006 17:10:50 -0700
Subject: Read a group of files as a list
Message-ID: <1158624650.131440.193140@i42g2000cwa.googlegroups.com>

Hi!!
I'm a beginner in python and I'm trying to use the files from a
"folder" as a list. What I want to do is  read each one as a list, but
just the name of the file, the data inside doesn't matter. How can I do
it?  I was trying using a list, but I don't know how "convert" the
elements (files) to a list that I can read and manipulate...

Thanks in advance for your help!!

Citlaly....



From gregpinero at gmail.com  Wed Sep 20 16:07:18 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Wed, 20 Sep 2006 16:07:18 -0400
Subject: How to get a Fix to an Abandoned Project?
In-Reply-To: <1158764881.159403.282370@b28g2000cwb.googlegroups.com>
References: <mailman.296.1158699367.10491.python-list@python.org>
	<1hlxp3x.1dtd1eug5y80N%rhymes@myself.com>
	<312cfe2b0609192121w436e649ayf3ce10fec066367c@mail.gmail.com>
	<mailman.310.1158728779.10491.python-list@python.org>
	<1158764881.159403.282370@b28g2000cwb.googlegroups.com>
Message-ID: <312cfe2b0609201307i45138614j1dd6870e4bb9360a@mail.gmail.com>

On 20 Sep 2006 08:08:01 -0700, Adam Jones <ajones1 at gmail.com> wrote:
>
> Gregory Pi?ero wrote:
> > Say hello to pydelicious's new home ;-)
> > http://code.google.com/p/pydelicious/
> >
> > -Greg
>
> Unless you are the original project's maintainer or have their consent
> on this it is usually bad form to name your fork the same thing as the
> original project. Granted, for something that has withered and died
> this may not be much of an issue, but it is good to know for future
> reference.
>
> -Adam

I took that issue into consideration.  I figure in this case it's not
a fork but rather a "move" ;-)

If the author ever returns he can take over the project and move it
wherever he wants.  So we need a new word perhaps instead of forked
let's call it "house sitting"

-Greg


From g.brandl-nospam at gmx.net  Thu Sep  7 05:01:47 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 07 Sep 2006 11:01:47 +0200
Subject: No ValueError for large exponents?
In-Reply-To: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
References: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
Message-ID: <edon5s$dnb$1@news.albasani.net>

enigmadude wrote:
> As many have heard, IronPython 1.0 was released. When I was looking
> through the listed differences between CPython and IronPython, the
> document mentioned that using large exponents such as 10 **
> 735293857239475 will cause CPython to hang, whereas IronPython will
> raise a ValueError.

What message does that value error have?

If it's a memory issue, the operation should raise MemoryError (at
least in CPython).

Georg


From jstroud at mbi.ucla.edu  Thu Sep 28 17:12:06 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 28 Sep 2006 21:12:06 GMT
Subject: best way to get data into a new instance?
In-Reply-To: <3RWSg.6293$GR.4101@newssvr29.news.prodigy.net>
References: <j%QSg.44$1n3.417@news.tufts.edu>
	<3RWSg.6293$GR.4101@newssvr29.news.prodigy.net>
Message-ID: <GUWSg.6296$GR.3518@newssvr29.news.prodigy.net>

James Stroud wrote:
> John Salerno wrote:
> 
>> Let's pretend I'm creating an Employee class, which I will later 
>> subclass for more specific jobs. Each instance will have stuff like a 
>> name, title, degrees held, etc. etc.
>>
>> So I'm wondering, is the best way to get all this information into the 
>> object to just have a really long __init__ method that takes each 
>> argument?
>>
>> Does a question like this depend on how the class will be used? I'm 
>> trying to construct it in a way that is independent of, say, the GUI 
>> interface that will be used, but I can't help but think that if all 
>> the data is entered into a GUI, then passed programmatically to the 
>> class, then it's no big deal because it happens behind the scenes. But 
>> if, for instance, someone manually created a new instance, they would 
>> have a ton of arguments to type in each time. Granted, even with the 
>> GUI they are basically typing in arguments, but in the manual case 
>> you'd have to type in the call to the class, the parentheses, commas, 
>> quotes around the strings, etc. (But still, I'm trying not to let a 
>> specific interface influence the construction of what should probably 
>> be a completely independent class implementation.)
>>
>> Thanks.
> 
> 
> This assumes that someone will hard-code an instance of your Employee. 
> E.g.:
> 
>      e = Employee(Last, First, ID,
>                   private_medical_info = 'Has halitosis.')
> 
> Will this ever really happen--either by an API user or an end user? 
> Probably not for a database of any usefulness at all. Usually records 
> will be programatically created (or created through a gui), so it really 
> isn't necessary to worry about this case, except maybe for testing. This 
> has been my experience. Its probably better to init with the bare 
> minimum parameters and focus on how to move information from an external 
> source into an already created instance:
> 
>     e = Employee(Last, First, ID)
>     e.private_medical_info = 'Has halitosis.'
> 
> If you are worried about validating field names, maybe use a method:
> 
> class Employee(object):
>   def __init__(self, Last, First, ID, **kwargs):
>     self.Last = Last
>     self.First = First
>     self.ID = ID
>     self._fields = {'Last':'Last Name',
>                     'First':'First Name',
>                     'ID':'Employee Identification Number',
>                     'private_medical_info':'Any source of bad odor.'}
>     for (field, value) in kwargs.items():
>       self.set_value(field, value)
>   def set_value(field, value):
>     if not field in self._fields:
>       raise ValueError, 'Field "%s" not supported.' % field
>     else:
>       self.__setattr__(field, value)
>   def get_value(field):
>     if not field in self._fields:
>       raise ValueError, 'Field "%s" not supported.' % field
>     else:
>       self.__getattribute__(field)
> 
> 
> OK, I'll stop. You get the idea.
> 
> You will find dealing with external sources the more interesting problem 
> anyway.
> 
> James
> 
> 
should be

def set_value(self, field, value):

and

def get_value(self, field):

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From blue99 at interia.pl  Fri Sep  1 03:55:03 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 1 Sep 2006 00:55:03 -0700
Subject: Subclassing Tkinter Buttons
In-Reply-To: <lKSdnZT-_b-jiWrZnZ2dnUVZ_vadnZ2d@nmt.edu>
References: <lKSdnZT-_b-jiWrZnZ2dnUVZ_vadnZ2d@nmt.edu>
Message-ID: <1157097303.822475.145150@74g2000cwt.googlegroups.com>


Bob Greschke wrote:
> I don't use classes much (mainly because I'm stupid), but I'd like to make a
> subclass of the regular Tkinter Button widget that simply adds spaces to the
> passed "text=" when the program is running on Windows (Linux, Solaris, Mac
> add a little space between the button text and the right and left edges of a
> button, Windows does not and it looks bad/can be hard to read).  Below is
> some pseudo code.  What should the guts of the BButton class be?  I can't
> work out how all of the arguments that would be passed to a regular Button
> call get handled.  *args and **kw confuse me and I can't seem to find simple
> enough examples in my mountain of books.

So watch this:

<code>
import Tkinter as Tk
import sys

class MyButton(Tk.Button):
    system = sys.platform[:3]                # 1

    def __init__(self, master=None, **kw):   # 2 3
        if self.system == "win":
            kw["padx"] = kw.get("padx", 0) + 5   # 4
        # alternative solution
        # if "text" in kw and self.system == "win":
        #     kw["text"] = " " + kw["text"] + " "

        Tk.Button.__init__(self, master, **kw)   # 5
</code>

1. system is a class attribute, so is shared by the class and all
    instances of the class
2. __init__ is called immediately after an instance of the class
    is created
3. kw is a dictionary of button options for example:
    {"text": "Hello", "padx": 2}
4. change value of element "padx" or add this element to dictionary kw
5. call parent __init__ method to create button

HTH,
Rob



From raschulmanxx at verizon.net  Tue Sep  5 21:35:46 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Wed, 06 Sep 2006 01:35:46 GMT
Subject: Unicode string handling problem (revised)
Message-ID: <jd9sf2pb4mg9j6bc0usqhu3vbd5l2ic17r@4ax.com>

The appended program fragment works correctly with an ascii input
file. But the file I actually want to process is Unicode (utf-16
encoding). This file must be Unicode rather than ASCII or Latin-1
because it contains mixed Chinese and English characters.

When I run the program I get an attribute_count of zero. This
is incorrect for the input file, which should give a value of fifteen
or sixteen. In other words, the count function isn't recognizing the

",

characters to be counted in the line read.

Here's the program:

in_file = open("c:\\pythonapps\\in-graf1.my","rU")
try:
    # Skip the first line; make the second available for processing
    in_file.readline()
    in_line = in_file.readline()
    attribute_count = in_line.count('",')
    print attribute_count
finally:
    in_file.close()

Any suggestions?

Richard Schulman
(delete 'xx' characters for email reply)


From bearophileHUGS at lycos.com  Tue Sep 12 13:26:46 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 12 Sep 2006 10:26:46 -0700
Subject: "filtered view" upon lists?
In-Reply-To: <mailman.363.1158075325.5279.python-list@python.org>
References: <mailman.337.1158062350.5279.python-list@python.org>
	<878xkpb5wa.fsf@gmail.com>
	<mailman.363.1158075325.5279.python-list@python.org>
Message-ID: <1158082006.858410.125480@i3g2000cwc.googlegroups.com>

Wildemar Wildenburger:
> I sort of wanted to avoid these. Though my lists shouldn't terribly
> long, so performance is not an issue so much. I simply want to avoid
> having two datasets that I have to sync. Major pain, I believe.

Note that if you just have to scan the "view list", then you can use
the lazy:

itertool.ifilter(predicate, iterable)

Bye,
bearophile



From g.brandl-nospam at gmx.net  Sun Sep 24 06:41:14 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 24 Sep 2006 12:41:14 +0200
Subject: A critique of cgi.escape
In-Reply-To: <ef5lb9$h1k$2@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz>
Message-ID: <ef5ncc$uus$1@news.albasani.net>

Lawrence D'Oliveiro wrote:
> In message <mailman.518.1159087749.10491.python-list at python.org>, Fredrik
> Lundh wrote:
> 
>> Jon Ribbens wrote:
>> 
>>> Making cgi.escape always escape the '"' character would not break
>>> anything, and would probably fix a few bugs in existing code. Yes,
>>> those bugs are not cgi.escape's fault, but that's no reason not to
>>> be helpful. It's a minor improvement with no downside.
>> 
>> the "improvement with no downside" would bloat down the output for
>> everyone who's using the function in the intended way, and will also
>> break unit tests.
> 
> I don't understand this "bloat down" nonsense. Any tests that would break
> are obviously testing the wrong thing.

&quot; is 4 characters more than ".

>>  > One thing that is flat-out wrong, by the way, is that cgi.escape()
>>  > does not encode the apostrophe (') character.
>> 
>> it's intentional, of course: you're supposed to use " if you're using
>> cgi.escape(s, True) to escape attributes.
> 
> Attributes can be quoted with either single or double quotes. That's what
> the HTML spec says. cgi.escape doesn't correctly allow for that. Ergo,
> cgi.escape is broken. QED.

A function is broken if its implementation doesn't match the documentation.

As a courtesy, I've pasted it below.

escape(s[, quote])
     Convert the characters "&", "<" and ">" in string s to HTML-safe sequences. 
Use this if you need to display text that might contain such characters in HTML. 
If the optional flag quote is true, the quotation mark character (""") is also 
translated; this helps for inclusion in an HTML attribute value, as in <A 
HREF="...">. If the value to be quoted might include single- or double-quote 
characters, or both, consider using the quoteattr() function in the 
xml.sax.saxutils module instead.


Now, do you still think cgi.escape is broken?


Georg


From don.pasquale at blabla_tzimeil.com  Sat Sep  9 10:19:51 2006
From: don.pasquale at blabla_tzimeil.com (don pasquale)
Date: Sat, 09 Sep 2006 17:19:51 +0300
Subject: pyparsing listAllMatches problem
Message-ID: <op.tfl7fdwumlmssi@fafoi.lan>

hello,
I'm using pyparsing and trying to parse something like:
test="""Q(x,y,z):-Bloo(x,"Mitsis",y),Foo(y,z,1243),y>28,x<12,x>3"""

and also have all comparison predicates in a separate list apart from the  
parse tree. So my grammar has this line in it:

Comparison_Predicate = Group(variable + oneOf("< >")  
+ integer).setResultsName("pred",listAllMatches=True)

but it doesn't work at all... only the last comp.pred. gets in the pred  
attribute...
here's the full listing:



 from pyparsing import Literal, Word, nums, Group, Dict, alphas,  
quotedString, oneOf, delimitedList, removeQuotes, alphanums

lbrack = Literal("(").suppress()
rbrack = Literal(")").suppress()
integer = Word( nums )
variable = Word( alphas, max=1 )
relation_body_item = variable | integer |  
quotedString.setParseAction(removeQuotes)
relation_name = Word( alphas+"_", alphanums+"_" )
relation_body = lbrack + Group(delimitedList(relation_body_item)) + rbrack
Goal = Dict(Group( relation_name + relation_body ))
Comparison_Predicate = Group(variable + oneOf("< >")  
+ integer).setResultsName("pred",listAllMatches=True)
Query = Goal.setResultsName("head") + ":-" + delimitedList(Goal |  
Comparison_Predicate)

test="""Q(x,y,z):-Bloo(x,"Mitsis",y),Foo(y,z,1243),y>28,x<12,x>3"""

print Query.parseString(test).pred



P.S. another weird thing is that, depending on if I setResultsName("head")  
in the first Goal match, the first Goal, gets inside an extra list!What I  
mean is that the parsed token without setResultsName("head") is this:
['Q', ['x', 'y', 'z']]
and with setResultsName("head") is this:
[['Q', ['x', 'y', 'z']]]
-- 
??????????? ?????? ???? ?????????...


From guotie.9 at gmail.com  Mon Sep  4 08:47:19 2006
From: guotie.9 at gmail.com (=?utf-8?B?5Y+u5Y+u5b2T5b2T?=)
Date: 4 Sep 2006 05:47:19 -0700
Subject: are there any lib for receive hotmail  ?
Message-ID: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>

thanks.



From lists at fabis-site.net  Tue Sep 26 13:14:25 2006
From: lists at fabis-site.net (Fabian Steiner)
Date: Tue, 26 Sep 2006 19:14:25 +0200
Subject: Splitting device addresses into parts
In-Reply-To: <45195a2d$0$27565$626a54ce@news.free.fr>
References: <efbl8h$kf2$03$1@news.t-online.com>
	<45195a2d$0$27565$626a54ce@news.free.fr>
Message-ID: <efbn5h$ol2$03$1@news.t-online.com>

Bruno Desthuilliers wrote:
> Fabian Steiner wrote:
>> I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
>> need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
>> simple way to achieve this? So far I am using regular expressions but I
>> would like to avoid them ...
> 
> devices = ["PCI:2:3.0", "PCI:3.4:0"]
> for d in device:
>   nums = tuple(map(int, d.split(':')[1:]))
>   print "for ", d, " : ", nums

Unfortunately, this doesn't work (even if I correct your typos) since
the delimeter isn't necessary a colon - that's exactly the difficulty I
am trying to solve.

Regards,
Fabian Steiner


From tuomas.vesterinen at pp.inet.fi  Mon Sep 18 18:47:11 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Mon, 18 Sep 2006 22:47:11 GMT
Subject: Message dialog on 'focus-out-event'
Message-ID: <PlFPg.363$CJ.0@read3.inet.fi>

import pygtk, gtk, gobject, ...

class MyEntry(gtk.Entry):
     def __init__(self, is_OK):
         gtk.Entry.__init__(self)
         self.is_OK=is_OK
         self.add_events(gtk.gdk.FOCUS_CHANGE)
         self.focus_out_id=self.connect('focus-out-event',
                                        self.on_focus_out)

     def on_focus_out(self, sender, event):
         if self.is_OK(self.get_text()): return False
         else:
             # don't want another focus-out-event because of show_message
             self.disconnect(self.focus_out_id)
             # self.grab_focus()
             show_message("Wrong value for entry")
             self.focus_out_id=self.connect('focus-out-event',
                                            self.on_focus_out)
             return False

             # Leaving focus in not_OK case results:

             # GtkWarning: GtkEntry - did not receive focus-out-event.
             # If you connect a handler to this signal, it must return
             # FALSE so the entry gets the event as well

             # The required False is given, but may be the messagebox
             # times it out.

             # My second trial was to include self.grab_focus() before
             # show_message, but it gives focus to the toplevel
             # gtk.gdk.Window and I lose access to the entry.

             # Any suggestions?
             # Tuomas Vesterinen


From johnjsal at NOSPAMgmail.com  Mon Sep 25 17:00:55 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 25 Sep 2006 21:00:55 GMT
Subject: 2.5 updates for syntax file
In-Reply-To: <1159217085.967554.196930@i3g2000cwc.googlegroups.com>
References: <FOVRg.23$1n3.227@news.tufts.edu>
	<1159217085.967554.196930@i3g2000cwc.googlegroups.com>
Message-ID: <bsXRg.25$1n3.273@news.tufts.edu>

Andrea wrote:
>> Hi everyone. I'm updating my UltraEdit syntax file for Python 2.5 and
>> was wondering if anyone knew of other additions to make besides these. I
>> found all of these in the What's New document, but wasn't sure if there
>> were other important things to add for highlight.
> 
> Great :)
> 
> - Two new built-in functions, any() and all()
> - A new warning, UnicodeWarning
> 

Excellent, thanks! I also added:

ElementTree
msilib
uuid
cProfile


From Maria.Reinhammar at accalon.com  Fri Sep 29 07:49:40 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 29 Sep 2006 04:49:40 -0700
Subject: Socks server and client code in Python (Twisted?)
In-Reply-To: <1159482894.027791.229470@c28g2000cwb.googlegroups.com>
References: <1159482894.027791.229470@c28g2000cwb.googlegroups.com>
Message-ID: <1159530580.348993.84540@i42g2000cwa.googlegroups.com>

The answer may depend somewhat on whether your app is doing mostly
storage (filessystem) or calculations (cpu).

If you need to handle a fair number of sockets but do little
processing, you may wish to look at the standard modules
asyncore/asynchat.

But Twisted is not a bad advice :o) Maybe a little more threshold to
get started and you will have to co-deploy it with your app.



From codecraig at gmail.com  Fri Sep 15 16:59:49 2006
From: codecraig at gmail.com (abcd)
Date: 15 Sep 2006 13:59:49 -0700
Subject: wxTimer problem
In-Reply-To: <4n0fm7F89kp7U1@individual.net>
References: <1158349650.327255.135060@k70g2000cwa.googlegroups.com>
	<4n0fm7F89kp7U1@individual.net>
Message-ID: <1158353989.047997.284750@i42g2000cwa.googlegroups.com>

> Fix: Start the script from the main thread only.
>
> Regards,
>
>
> Bj?rn


thanks for NO help.....anyways, I got rid of the Timer b/c all i was
using it for was to check the state of the "shift" key.....but I am now
binding to key up/down.

thanks anyway



From http  Tue Sep 12 09:13:35 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 06:13:35 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
Message-ID: <7x7j09p6rk.fsf@ruckus.brouhaha.com>

"Simon Wittber" <simonwittber at gmail.com> writes:
> Are there any other concurrency options I've not discovered yet?

I've been wondering about the different Python MPI bindings that are
out there, and whether they might make sense for general purpose
concurrency when they were designed mostly for parallel numerical
computation.  Better MPI libraries should at least be able to
communicate by shared memory--I don't know if Pylinda does that.


From g.brandl-nospam at gmx.net  Thu Sep 28 09:42:47 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 28 Sep 2006 15:42:47 +0200
Subject: Resuming a program's execution after correcting error
In-Reply-To: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
References: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
Message-ID: <efgjgo$pbm$1@news.albasani.net>

Sheldon wrote:
> Hi.
> 
> Does anyone know if one can resume a python script at the error point
> after the error is corrected?
> I have a large program that take forever if I have to restart from
> scratch everytime. The error was the data writing a file so it seemed
> such a waste if all the data was lost and must be recalculated again.

As I said before, this can be done by finding out where the error is raised,
what the cause is and by inserting an appropriate try-except-statement in
the code.

There's no way to do that without modifying the code, if the program itself
doesn't offer such an option.

Georg


From waylan at gmail.com  Thu Sep  7 13:49:25 2006
From: waylan at gmail.com (waylan)
Date: 7 Sep 2006 10:49:25 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <4matfsF5babeU1@uni-berlin.de>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<4matfsF5babeU1@uni-berlin.de>
Message-ID: <1157651365.203283.76260@p79g2000cwp.googlegroups.com>


Diez B. Roggisch wrote:
> suppose it is well-formed, most probably even xml.

Maybe not. Otherwise, why would there be a script like this one[1]?
Anyway, I found that and other scripts that work with firefox
bookmarks.html files with a quick search [2]. Perhaps you will find
something there that is helpful.

[1]:
http://www.physic.ut.ee/~kkannike/english/prog/python/util/bookmarks/code/bookmarks.py
[2]: http://www.google.com/search?q=firefox+bookmarks.html+python

Waylan



From antoine at vo.lu  Sun Sep 24 17:35:55 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Sun, 24 Sep 2006 23:35:55 +0200
Subject: ruby %w equivalent
Message-ID: <4516FA3B.8020400@vo.lu>

Hi everybody,

is there a python equivalent for the ruby %w operator?
%w{a b c} creates an array with strings "a", "b", and "c" in ruby...

Thanks a lot
Regards,
antoine


From jgodoy at gmail.com  Sat Sep 30 13:04:23 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 30 Sep 2006 14:04:23 -0300
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de>
Message-ID: <87psddwajs.fsf@gmail.com>

Mirco Wahab <wahab at chemie.uni-halle.de> writes:

>   sub print_message {
>      if   (/^track="(.+?)"/ ){ print "Your track is $1\n" }
>      ...
>
> which has a "more complicated" regex that is usually
> not understood easily by newbies.

Specially the non-greedy part. :-) I don't believe that non-greedyness would
be adequate here since I believe he's willing to process the whole line.

===========================================================================
$line = "track='My favorite track'";
if ($line =~ /^track=(.+?)/) { print "My track is $1\n"};
===========================================================================

outputs

===========================================================================
My track is '
===========================================================================

While

===========================================================================
$line = "track='My favorite track'";
if ($line =~ /^track=(.+)/) { print "My track is $1\n"};
===========================================================================

outputs

===========================================================================
My track is 'My favorite track'
===========================================================================

and what I'd use

===========================================================================
$line = "track='My favorite track'";
if ($line =~ /^track=(.*)/) { print "My track is $1\n"};
===========================================================================

has the same output.  ;-)

All this running perl 5.8.8.


Be seeing you,
-- 
Jorge Godoy      <jgodoy at gmail.com>


From kbk at shore.net  Fri Sep  8 21:35:24 2006
From: kbk at shore.net (Kurt B. Kaiser)
Date: Fri, 8 Sep 2006 21:35:24 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200609090135.k891ZOcT003051@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  413 open ( +1) /  3407 closed (+10) /  3820 total (+11)
Bugs    :  897 open ( -3) /  6167 closed (+18) /  7064 total (+15)
RFE     :  234 open ( +1) /   238 closed ( +2) /   472 total ( +3)

New / Reopened Patches
______________________

Fix decimal context management for 2.5  (2006-09-02)
CLOSED http://python.org/sf/1550886  opened by  Nick Coghlan

Fix for rpartition() end-case  (2006-09-03)
CLOSED http://python.org/sf/1551339  opened by  Raymond Hettinger

Updated spec file for 2.5 release.  (2006-09-03)
CLOSED http://python.org/sf/1551340  opened by  Sean Reifschneider

unparse.py decorator support  (2006-09-04)
       http://python.org/sf/1552024  opened by  Adal Chiriliuc

eval docstring typo  (2006-09-04)
CLOSED http://python.org/sf/1552093  opened by  Ori Avtalion

Fix error checks and leaks in setobject.c  (2006-09-05)
CLOSED http://python.org/sf/1552731  reopened by  gbrandl

Fix error checks and leaks in setobject.c  (2006-09-05)
CLOSED http://python.org/sf/1552731  opened by  Raymond Hettinger

Unicode Imports  (2006-09-05)
       http://python.org/sf/1552880  opened by  Kristj?n Valur

Fix inspect.py 2.5 slowdown  (2006-09-06)
CLOSED http://python.org/sf/1553314  opened by  Nick Coghlan

locale.getdefaultlocale() bug when _locale is missing  (2006-09-06)
       http://python.org/sf/1553427  opened by  STINNER Victor

UserDict New Style  (2006-09-09)
       http://python.org/sf/1555097  opened by  Indy

Performance enhancements.  (2006-09-09)
       http://python.org/sf/1555098  opened by  Indy

Patches Closed
______________

Fix decimal context management for 2.5  (2006-09-02)
       http://python.org/sf/1550886  closed by  ncoghlan

Fix for rpartition() end-case  (2006-09-02)
       http://python.org/sf/1551339  closed by  nnorwitz

Updated spec file for 2.5 release.  (2006-09-02)
       http://python.org/sf/1551340  closed by  nnorwitz

eval docstring typo  (2006-09-04)
       http://python.org/sf/1552093  closed by  nnorwitz

crash in dict_equal  (2006-08-24)
       http://python.org/sf/1546288  closed by  nnorwitz

Patches for OpenBSD 4.0  (2006-08-15)
       http://python.org/sf/1540470  closed by  nnorwitz

Fix error checks and leaks in setobject.c  (2006-09-05)
       http://python.org/sf/1552731  closed by  rhettinger

Fix error checks and leaks in setobject.c  (2006-09-05)
       http://python.org/sf/1552731  closed by  gbrandl

make exec a function  (2006-09-01)
       http://python.org/sf/1550800  closed by  gbrandl

Ellipsis literal "..."  (2006-09-01)
       http://python.org/sf/1550786  closed by  gbrandl

Fix inspect.py 2.5 slowdown  (2006-09-06)
       http://python.org/sf/1553314  closed by  ncoghlan

New / Reopened Bugs
___________________

from . import bug  (2006-09-02)
CLOSED http://python.org/sf/1550938  opened by  ganges master

random.choice(setinstance) fails  (2006-09-02)
CLOSED http://python.org/sf/1551113  opened by  Alan

Build of 2.4.3 on fedora core 5 fails to find asm/msr.h  (2006-09-02)
       http://python.org/sf/1551238  opened by  George R. Goffe

tiny bug in win32_urandom  (2006-09-03)
CLOSED http://python.org/sf/1551427  opened by  Rocco Matano

__unicode__ breaks for exception class objects  (2006-09-03)
       http://python.org/sf/1551432  opened by  Marcin 'Qrczak' Kowalczyk

Wrong link to unicode database  (2006-09-03)
CLOSED http://python.org/sf/1551669  opened by  Yevgen Muntyan

unpack list of singleton tuples not unpacking  (2006-07-11)
CLOSED http://python.org/sf/1520864  reopened by  gbrandl

UnixCCompiler runtime_library_dir uses -R instead of -Wl,-R  (2006-09-04)
CLOSED http://python.org/sf/1552304  opened by  TFKyle

PEP 290 <-> normal docu...  (2006-09-05)
CLOSED http://python.org/sf/1552618  opened by  Jens Diemer

Python polls unecessarily every 0.1 when interactive  (2006-09-05)
       http://python.org/sf/1552726  opened by  Richard Boulton

Python polls unnecessarily every 0.1 second when interactive  (2006-09-05)
       http://python.org/sf/1552726  reopened by  akuchling

subprocess.Popen(cmd, stdout=sys.stdout) fails  (2006-07-31)
CLOSED http://python.org/sf/1531862  reopened by  nnorwitz

ConfigParser converts option names to lower case on set()  (2006-09-05)
CLOSED http://python.org/sf/1552892  opened by  daniel

Pythonw doesn't get rebuilt if version number changes  (2006-09-05)
       http://python.org/sf/1552935  opened by  Jack Jansen

python 2.5 install can't find tcl/tk in /usr/lib64  (2006-09-06)
       http://python.org/sf/1553166  opened by  David Strozzi

logging.handlers.RotatingFileHandler - inconsistent mode  (2006-09-06)
       http://python.org/sf/1553496  opened by  Walker Hale

datetime.datetime.now() mangles tzinfo  (2006-09-06)
       http://python.org/sf/1553577  opened by  Skip Montanaro

Class instance apparently not destructed when expected  (2006-09-06)
       http://python.org/sf/1553819  opened by  Peter Donis

PyOS_InputHook() and related API funcs. not documented  (2006-09-07)
       http://python.org/sf/1554133  opened by  A.M. Kuchling

Bugs Closed
___________

itertools.tee raises SystemError  (2006-09-01)
       http://python.org/sf/1550714  closed by  nnorwitz

Typo in Language Reference Section 3.2 Class Instances  (2006-08-28)
       http://python.org/sf/1547931  closed by  nnorwitz

from . import bug  (2006-09-02)
       http://python.org/sf/1550938  closed by  gbrandl

tiny bug in win32_urandom  (2006-09-03)
       http://python.org/sf/1551427  closed by  gbrandl

sgmllib.sgmlparser is not thread safe  (2006-08-29)
       http://python.org/sf/1548288  closed by  gbrandl

test_anydbm segmentation fault  (2006-08-21)
       http://python.org/sf/1544106  closed by  greg

Wrong link to unicode database  (2006-09-03)
       http://python.org/sf/1551669  closed by  gbrandl

unpack list of singleton tuples not unpacking  (2006-07-11)
       http://python.org/sf/1520864  closed by  nnorwitz

UnixCCompiler runtime_library_dir uses -R instead of -Wl,-R  (2006-09-04)
       http://python.org/sf/1552304  closed by  tfkyle

gcc trunk (4.2) exposes a signed integer overflows  (2006-08-23)
       http://python.org/sf/1545668  closed by  nnorwitz

Exceptions don't call _PyObject_GC_UNTRACK(self)  (2006-08-17)
       http://python.org/sf/1542051  closed by  gbrandl

PEP 290 <-> normal docu...  (2006-09-05)
       http://python.org/sf/1552618  closed by  gbrandl

SimpleXMLRpcServer still uses sys.exc_value and sys.exc_type  (2006-07-19)
       http://python.org/sf/1525469  closed by  akuchling

unbalanced parentheses  from command line crash pdb  (2006-07-22)
       http://python.org/sf/1526834  closed by  akuchling

Python polls unnecessarily every 0.1 second when interactive  (2006-09-05)
       http://python.org/sf/1552726  closed by  akuchling

subprocess.Popen(cmd, stdout=sys.stdout) fails  (2006-07-31)
       http://python.org/sf/1531862  closed by  niemeyer

subprocess.Popen(cmd, stdout=sys.stdout) fails  (2006-07-31)
       http://python.org/sf/1531862  closed by  niemeyer

ConfigParser converts option names to lower case on set()  (2006-09-05)
       http://python.org/sf/1552892  closed by  gbrandl

SWIG wrappers incompatible with 2.5c1  (2006-09-01)
       http://python.org/sf/1550559  closed by  gbrandl

Building Python 2.4.3 on Solaris 9/10 with Sun Studio 11  (2006-05-28)
       http://python.org/sf/1496561  closed by  andyfloe

Curses module doesn't install on Solaris 2.8  (2005-10-12)
       http://python.org/sf/1324799  closed by  akuchling

New / Reopened RFE
__________________

Add traceback.print_full_exception()  (2006-09-06)
       http://python.org/sf/1553375  opened by  Michael Hoffman

Print full exceptions as they occur in logging  (2006-09-06)
       http://python.org/sf/1553380  opened by  Michael Hoffman

RFE Closed
__________

random.choice(setinstance) fails  (2006-09-02)
       http://python.org/sf/1551113  closed by  rhettinger

Add 'find' method to sequence types  (2006-08-28)
       http://python.org/sf/1548178  closed by  gbrandl



From dcrespo at gmail.com  Mon Sep 11 19:23:14 2006
From: dcrespo at gmail.com (Daniel Crespo)
Date: 11 Sep 2006 16:23:14 -0700
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <mailman.289.1158006990.5279.python-list@python.org>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
	<4505B54C.30905@designaproduct.biz>
	<mailman.285.1158002192.5279.python-list@python.org>
	<1158005948.883368.185320@m73g2000cwd.googlegroups.com>
	<mailman.289.1158006990.5279.python-list@python.org>
Message-ID: <1158016994.349214.264610@q16g2000cwq.googlegroups.com>

Hi Laszlo,

I have read that. It's the wrapper for the usage of OpenSSL, so I have
to install it. I have downloaded the Borland C++ compiler, and I'm
doing so right now, but I'm not getting good results yet.

I tried to import OpenSSL, it seems to work.

Now, I want to try the code I submited earlier, but I need the .pem
files. You told me to change generate.sh to generate.bat. How can I do
that?

Many thanks,

Daniel


Laszlo Nagy wrote:
> Daniel Crespo ?rta:
> > Laszlo Nagy wrote:
> >
> >>> If you have OpenSSL installed, you can do the following:
> >>>
> >>> 1. Create a new directory and place the two attached files in it
> >>> (openssl.cnf and generate.sh)
> >>> 2. Run  "chmod +x gen_cert.sh ; ./gen_cert.sh  yourdomain.com"
> >>>
> >> I meant generate.sh instead of gen_cert.sh.
> >>
> >> Under windows it won't work. But you can easily convert generate.sh into
> >> generate.bat. :-)
> >>
> >>   Laszlo
> >>
> >
> > I'm on Windows...
> > I'm also trying to get OpenSSL installed, but I need compilers and all
> > that stuff. Before getting involved in that, do you know of a faster
> > way to have it installed?
> >
> Yes. Read the recipe once more. Especially, the first document string in
> that program. ;-)
>
> """For windows users: http://webcleaner.sourceforge.net/pyOpenSSL-0.6.win32-py2.4.exe"""
>
> (You will also need the openssl binaries for windows, but they are very easy to find.)
> 
> 
>    Laszlo



From fredrik at pythonware.com  Thu Sep 28 14:26:15 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 20:26:15 +0200
Subject: how do you know if open failed?
In-Reply-To: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
References: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
Message-ID: <efh446$ndp$1@sea.gmane.org>

SpreadTooThin wrote:

> f = open('myfile.bin', 'rb')
> 
> How do I know if there was an error opening my file?

you'll notice:

 >>> f = open("myfile.bin", "rb")
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
IOError: [Errno 2] No such file or directory: 'myfile.bin'
 >>>

</F>



From thorsten at thorstenkampe.de  Mon Sep 11 19:20:38 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 12 Sep 2006 00:20:38 +0100
Subject: Running python from a usb drive
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
Message-ID: <1tbmj1as8trh0.8bgssr6gdedg.dlg@40tude.net>

* cjl (2006-09-11 20:34 +0100)
>> Copying the Python24 directory is a good start, but doesn't include the
>> enormous number of registry keys that are included in the install and
>> are probably needed for the complete capabilites of python.
> 
> Is the source of the windows python installer available? I guess I
> could see what registry keys they are setting...

Simply installing Python would be about one hundred times faster...

>> Environmental Variables? Try setting the user/system variable "pythonpath"
> 
> I do set pythonpath, see above.
> 
> Any other ideas?

Use Cywin Python.


From chris at kateandchris.net  Tue Sep 19 12:31:46 2006
From: chris at kateandchris.net (Chris Lambacher)
Date: Tue, 19 Sep 2006 12:31:46 -0400
Subject: Python programs always open source?
In-Reply-To: <87k6402i62.fsf@benfinney.id.au>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
	<4n9n4iF99lbqU1@uni-berlin.de> <87k6402i62.fsf@benfinney.id.au>
Message-ID: <20060919163146.GA5295@kateandchris.net>

On Tue, Sep 19, 2006 at 09:46:13PM +1000, Ben Finney wrote:
> "Diez B. Roggisch" <deets at nospam.web.de> writes:
> 
> > Ben Finney schrieb:
> > > My claim (and IANAL) is that it doesn't matter *what* license
> > > Python is distributed under; unless you do something with Python
> > > that is a right of the copyright holder, such as distributing part
> > > or all of Python, the copyright license terms of Python have no
> > > legal effect on what license you choose for your own work.
> >
> > Not true for the GPL. Part of python is the library, which you
> > either use explicit (I can't imagine a program that doesn't, beyond
> > print "hello world"), or implicit (sys and os are AFAIX used
> > internally to bootstrap the interpreter)
> 
> And just about every program on a GNU/Linux system uses the libc
> library, which is distributed under the GPL. That license *only*
> affects works that are *derivative* of the libc library.
Hmmm... The copyright file I have for GNU C Library looks to be LGPL:
"""
    Copyright (C) 1991,92,93,94,95,96,97,98,99,2000,2001,2002,2003 Free Software
    Foundation, Inc.

       The GNU C Library is free software; you can redistribute it and/or
       modify it under the terms of the GNU Lesser General Public
       License as published by the Free Software Foundation; either
       version 2.1 of the License, or (at your option) any later version.

       The GNU C Library is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       Lesser General Public License for more details.
"""

The difference between the GPL and the LGPL is the linking thing.  Whether or
not it would hold up in court the FSF believes that GPL libraries mean only
GPL or GPL compatible licences are allowed to link, while anything can link
(dynamically not statically) to LGPL libraries.
http://www.gnu.org/licenses/why-not-lgpl.html:
"""
    Proprietary software developers have the advantage of money; free software
    developers need to make advantages for each other. Using the ordinary GPL for
    a library gives free software developers an advantage over proprietary
    developers: a library that they can use, while proprietary developers cannot
    use it.

    Using the ordinary GPL is not advantageous for every library. There are
    reasons that can make it better to use the Library GPL in certain cases. The
    most common case is when a free library's features are readily available for
    proprietary software through other alternative libraries. In that case, the
    library cannot give free software any particular advantage, so it is better to
    use the Library GPL for that library.
"""

> 
> > And the GPL exactly requires that when a library licensed under it
> > is used, that makes the using program GPL-licensed, too.
> 
> No, only when a new work *derives from* the existing work does
> copyright on the existing work take effect.
> 
> You may be thinking of the "linking" clause, which depends on the
> *inclusion of* existing header files from the library code, supplied
> under the GPL. There's no such concept in an interpreted language like
> Python: you write your program in the Python language without
> including a single piece of the original in your work.
> 
> The GPL itself is clear on the fact that its terms cannot claim
> anything that is not granted to the copyright holder -- and
> *execution* of a library is not a right over which the library author
> has any rights.
> 
> Even if execution (or "use") of a program library, without including
> *any* of its code in your own work, were a right the library author
> could restrict, no free software program can place any restriction on
> execution (otherwise it's trivially non-free). If Python's license
> were ever to have such a restrictive term, it would likely be
> unenforcible, but would certainly disqualify it from inclusion in any
> free operating system.
> 
> Copyright is currently weighted greatly in favour of copyright
> holders, but please don't buy into the absolute-power rhetoric more
> than necessary.
> 
> -- 
>  \       "Yesterday I told a chicken to cross the road. It said, 'What |
>   `\                                          for?'"  -- Steven Wright |
> _o__)                                                                  |
> Ben Finney
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list


From fredrik at pythonware.com  Mon Sep 11 09:32:05 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 11 Sep 2006 15:32:05 +0200
Subject: inserting into a file
References: <6559fb300609110540leba6c1s4db35234da2f437c@mail.gmail.com>
Message-ID: <ee3ogm$ho4$1@sea.gmane.org>

"Sai Krishna M" wrote:

> One crude idea i had was to read the file in a list and insert the
> string correspondingly.

file systems usually don't support insertion and deletion, so if you want to move
things around, you have to do that yourself.

reading and writing lists (using readlines/writelines) works well, as long as the files
aren't too large.

> Is there any other way to do this?

not with plain files.  if you need to do lots of inserts/deletes, you should probably
use a database manager instead (which uses more elaborate data structures on
disk).  see e.g. the "dbm" and "bsddb" modules in the standard library.

</F> 





From steve at holdenweb.com  Thu Sep 28 09:23:18 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 14:23:18 +0100
Subject: a query on sorting
In-Reply-To: <7xlko464m3.fsf@ruckus.brouhaha.com>
References: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>	<efdohj$eq0$1@sea.gmane.org>	<mailman.848.1159412804.10491.python-list@python.org>
	<7xlko464m3.fsf@ruckus.brouhaha.com>
Message-ID: <efgiak$g9q$1@sea.gmane.org>

Paul Rubin wrote:
> Gabriel Genellina <gagsl-py at yahoo.com.ar> writes:
> 
>>>  >>> sorted((x[1], x[0]) for x in enumerate(a))
>>>[(1, 7), (2, 4), (2, 8), (3, 2), (4, 1), (5, 3), (6, 5), (7, 6), (9, 0)]
>>
>>Why forcing to use enumerate if it doesn't fit? And a generator won't
>>help here since you have to access all the items.
>>
>>sorted([(a[i],i) for i in range(len(a))])
> 
> 
> I think 
> 
>    sorted((x,i) for i,x in enumerate(a))
> 
> looks nicer than the above. 

Indeed it does: an excellent refinement of my rather crappily-expressed 
original idea.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From colinlandrum at gmail.com  Tue Sep 26 11:53:20 2006
From: colinlandrum at gmail.com (hubritic)
Date: 26 Sep 2006 08:53:20 -0700
Subject: Introduction to Threading with Python, a podcast
In-Reply-To: <1159188017.363499.131470@b28g2000cwb.googlegroups.com>
References: <1159188017.363499.131470@b28g2000cwb.googlegroups.com>
Message-ID: <1159285999.903120.294920@h48g2000cwc.googlegroups.com>

I very much enjoyed this one! Good stuff.

Ron, it would help to have the code from your guest podcasts on your
site.

Thanks for your help in promoting python.

rdsteph at mac.com wrote:
> Chris Hefele has done an excellent talk about programming with threads
> using Python, including a fair amount of detail and a look at various
> related tools and topics. Chris did a lot of research and put a lot of
> effort into producing this podcast. I find it to be a particularly
> clear and lucid explanation of the basic principles of programming with
> threads.
>
> This is a far better-than-normal piece of work, so I feel it is worth
> mentioning here so that interested people can check it out, Go to
> www.awaretek.com/python/index.html and just click on the top podcast in
> the list of podcasts there.
> 
> Ron Stephens



From devilwolf22 at gmail.com  Fri Sep 29 15:11:18 2006
From: devilwolf22 at gmail.com (Steve Menard)
Date: Fri, 29 Sep 2006 15:11:18 -0400
Subject: PEP proposal : Getting rid of the extension version/compiler
	dependency
Message-ID: <KdeTg.35735$_m.618863@weber.videotron.net>

It's been observed a couple times recently ... distributing and compiling 
extensions is a pain, especially on windows, when the main supported 
compilers are not freely availble .. nor even commercially availble anymore.

What we need is a way to break out of this dependency. A way for python 
extensions to be built using any C compiler and be able to target multiple 
Python runtime version with a single binary build.

I believe I have such a solution.It is heavily influenced byt Java's Native 
Interface, which achieved this independence since day one.

The technical details are too combersome to post here, so I added a page to 
my projects's homepage detailing my proposal. If there is interest, I'd be 
interested in working on the PEP and the implementation.The URL for the 
proposal is http://jpype.sourceforge.net/pni.html

This solution may not be complete. Of multi-platform details might make some 
suggestion impossible or impractical. Please take this proposal as a 
starting point for a discussion.

I have a working prototype for steps 1 that I am using to implement JPype. 
So this is not a pipe dream. it is real and functional.

Please leave tour comments here, or better yet on my blog at 
http://jpype.blogspot.com .

Steve Menard
Author and Maintainer of JPype ( http://jpype.sourceforge.net ) 




From steve at holdenweb.com  Wed Sep 27 13:01:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 18:01:51 +0100
Subject: Computer Language Popularity Trend
In-Reply-To: <1159374405.239644.192750@m7g2000cwm.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159374405.239644.192750@m7g2000cwm.googlegroups.com>
Message-ID: <efeaob$ip2$2@sea.gmane.org>

Joe Marshall wrote:
> Xah Lee wrote:
> 
>>Computer Language Popularity Trend
>>
>>This page gives a visual report of computer languages's popularity, as
>>indicated by their traffic level in newsgroups. This is not a
>>comprehensive or fair survey, but does give some indications of
>>popularity trends.
> 
> 
> Suggestions:
>   Provide a log-scale plot.  You can clearly see that there are
> exponential trends in the data, these will turn into lines in
> log-scale.  You can also see that the plots get more widely distributed
> as the number of posts increase.  This too will be minimized in
> log-scale.
> 
>   Make the horizontal scale for the `scripting' languages the same as
> the others.  I know there isn't data out on the left of the graph, but
> it surprised me to see points out there until I noticed the scale
> change.
> 
>   For the Google trends, try looking for `java programming' or `written
> in python' to avoid picking up the island and the popular comedy troupe.
> 
I'd also encourage normalisation so the highest value on all scales is 
the same height. The absolute numbers are neither as interesting nor as 
significant as the trends.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From morris.slutsky at gmail.com  Fri Sep 29 11:02:57 2006
From: morris.slutsky at gmail.com (morris.slutsky at gmail.com)
Date: 29 Sep 2006 08:02:57 -0700
Subject: Scoping bugs in an embedded Python interpreter - Wizards please
Message-ID: <1159542176.977456.258590@i42g2000cwa.googlegroups.com>

So every now and then I like to mess around with hobby projects - I
often end up trying to write an OpenGL video game.  My last attempt
aborted due to the difficulty of automating game elements and creating
a good level editor - I basically needed a scripting language to
control the C modules of the game and, after a half-assed attempt or
two to make my own, I just gave up.  So naturally this seems like a job
for Python.  Embedding Python into an OpenGL skeleton just seemed like
a great place to start for my next project.  I can write what I need to
in C, and tie it all together with Python, the games "main loop" itself
doesn't even need to be in C, I can test things as I go, can reuse
rendering code for game and level editing applications with great ease,
Python just seems like a wonderful way to go.

And it is wonderful!  I can just bring up an OpenGL window now, there's
a console in there, I can type interactive commands in there and they
get fed into a python interpreter, I can even type stuff like
glBegin(gl.LINES); glColor()...glVertex()....glEnd() and see stuff
appear on the screen, it's really amazing and lots of fun.  I am sure
that someday I can be calling C functions like RenderGame, MoveCamera,
UpdatePhysicsModel(deltaT), all from Python, and life will be good.
Maybe I can bring bits of my last game in, piece by piece, and tie it
all together.

I'm doing all this on Windows, using Microsoft Visual C++.  Which is a
nice compiler, and as an academic I get it free, always a bonus, and I
can put Python code into resources compiled into the executable and run
it the same way as I handle interactive commands (being sure to strip
out all 0x0D characters because for some reason Python believes that
the One True Line Terminator is 0x0A) and it's all good, it's really
great.

The embedding - I'm doing it the way I've seen in web FAQs and the
Python documentation.  I handle output by creating an object "myIO"
with a "write()" method and having Python start up with "import sys;
import myIO; sys.stdout = myIO; sys.stderr = myIO" and C gets magically
called to display Python's output on my OpenGL console, it's grand!
And I just run all the Python statements, interactive or from
resources, by calling Py_CompileString() on the string containing
python code and then, if there are no errors, calling PyEval_EvalCode.
If I'm running interactive I check for an "unexpected EOF" error just
like I saw in some FAQ and if I get one I just display a continuation
prompt and keep accumulating interactive input until I get a blank
line.... it looks just like the interactive Python you get from a
command line, it's just in my OpenGL console, which totally rules.

But .... I'm suffering from serious scoping bugs.  I hope someone here
can help me with them.

First of all, if I type in something like;

def f(x):
     if x==1:
          return x
     else:
          return x * f(x-1)

and then go
print f(5)

I get an error.  It says 'global name 'f' is not defined'.  So
recursion won't work because of some odd scoping bug.

Similarly, one of my Python startup files looks like this:

class gl:
....
        POINTS = 0x0000
	LINES = 0x0001
	LINE_LOOP = 0x0002
	LINE_STRIP = 0x0003
	TRIANGLES = 0x0004

Well, I can't do a "global gl" statement in any function or I get the
same error.  I end up having to pass the "gl" object down and down and
down, just so I can type glBegin(gl.POINTS) or something, from within a
function.  And I know that this just can't be proper behavior.

Did I screw up my scoping somehow?  How can I fix this?  Is there some
way to call the interpreter that I don't know how to do?

I appeal to a wizard to help me with this small, but very annoying,
issue with an otherwise beautiful language.



From tim.peters at gmail.com  Wed Sep 20 06:11:38 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Wed, 20 Sep 2006 06:11:38 -0400
Subject: Installing 2.5 with 2.4?
In-Reply-To: <1158745901.683169.148680@k70g2000cwa.googlegroups.com>
References: <AlTPg.2$1n3.27@news.tufts.edu>
	<1158681033.708546.132710@b28g2000cwb.googlegroups.com>
	<Xns98445B5ED4CD0duncanbooth@127.0.0.1>
	<1158745901.683169.148680@k70g2000cwa.googlegroups.com>
Message-ID: <1f7befae0609200311i699c8586w3b4782420ddfe075@mail.gmail.com>

[Duncan Booth]
>> Windows is only smart enough to avoid duplicate entries if you tell it
>> to do that. e.g.
>>
>> PATH c:\python25;c:\python25\scripts;%PATH:c:\python25;c:\python25\scripts;=%
>>
>> will add the two Python 2.5 folders to the head of the path without
>> duplicating them.

[John Machin[
> Wow .. I didn't know that! What's the syntax? Something like
> %variablename[:oldtext=[newtext]]%
> ?

Yup.

> Where is this documented?

>From a DOS box (cmd.exe), enter

    set /?


From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 05:29:54 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 10:29:54 +0100
Subject: a Pywin Outlook adress Book Question
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B411@vogbs009.gb.vo.local>

| [Kai Mayfarth]
| 
| | Ist there a way to search a Adressbook over Python for a 
| | special contact.

[TJG]
| As far as I can see from a quick glance, there is no method
| of the AddressList or AddressEntries objects which calls into
| the Outlook code itself to search

Although now I Google a little more, it looks like AddressEntryFilter
might well do what you want. Worth a look, anyway :)

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From GavinCrooks at gmail.com  Mon Sep 11 03:59:30 2006
From: GavinCrooks at gmail.com (GavinCrooks at gmail.com)
Date: 11 Sep 2006 00:59:30 -0700
Subject: Ann: CoreBio 0.4
Message-ID: <1157961570.253884.44940@d34g2000cwd.googlegroups.com>


Announcing CoreBio 0.4
------------------------
CoreBio home page:
    http://code.google.com/p/corebio/

Download:
    http://corebio.googlecode.com/svn/dist/CoreBio-0.4.1.tar.gz

CoreBio is an open source python library for bioinformatics and
computational biology, designed to be fast, compact, reliable and easy
to use. Currently, CoreBio includes code to store and manipulate
protein and DNA sequences, read and write many common biological
sequence formats, read blast reports and access other computational and
database resources.

The CoreBio project welcomes additional suggestions, code and
participants.

This release includes the following modules:

    - data: Standard information used in computational biology.
    - matrix: Arrays indexed by alphabetic strings.
    - moremath: Various bits of useful math not in the standard

                python library.
    - resource: Access to programs, complex file formats and
                databases
        - astral: ASTRAL dataset IO.
        - scop: SCOP: Structural Classification of Proteins IO.
        - stride: STRIDE: Protein secondary structure assignment

                from atomic coordinates.
    - seq: Alphabetic sequences and associated tools and data.
    - seq_io: Sequence file reading and writing.
        - array_io: Read and write arrays of sequence data.
        - clustal_io: Read the CLUSTAL sequence file format.
        - fasta_io: Read and write FASTA format.
        - genbank_io: Read GenBank flat files.
        - intelligenetics_io: Read IntelliGenetics format.
        - msf_io: Read sequence information in MSF format.
        - nbrf_io: Sequence IO for NBRF/PIR format.
        - nexus_io: Read the sequence data from a nexus file.
        - null_io: Null sequence IO.
        - phylip_io: Read Sequences in interleaved Phylip format.
        - plain_io: Read and write raw, unformatted sequence data.
        - stockholm_io: Read a STOCKHOLM format.
        - table_io: Read  tab delimited format.
    - ssearch_io: Parse sequence search analysis reports.
        - blastxml: Read BLAST XML output.
        - fasta: Read the output of a fasta similarity search.
    - transform: Transformations of Seqs (alphabetic sequences),
            including translation with a full suite of
            GeneticCode's.
            
            
Gavin Crooks and John Gilman



From sanxiyn at gmail.com  Thu Sep 14 01:30:15 2006
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Thu, 14 Sep 2006 14:30:15 +0900
Subject: [ANN] IronPython Community Edition 1.0r1
In-Reply-To: <5b0248170609132225q37b49418od3d1fea1ad77d0d@mail.gmail.com>
References: <5b0248170609132225q37b49418od3d1fea1ad77d0d@mail.gmail.com>
Message-ID: <5b0248170609132230j2af97874j48c5795b4ff16517@mail.gmail.com>

2006/9/14, Sanghyeon Seo <sanxiyn at gmail.com>:
> I am happy to announce IronPython Community Edition (IPCE for short)
> 1.0 revision 1, based on IronPython 1.0, to the world.

I haven't included Python standard library or my DB-API for IronPython
modules or useful third party modules like ElementTree and
BeautifulSoup in this revision, because I was too lazy to write an
extensive license statements required to do so. :(

Will do that next time.

Seo Sanghyeon


From snowf200807 at gmail.com  Wed Sep  6 02:29:55 2006
From: snowf200807 at gmail.com (snowf)
Date: 5 Sep 2006 23:29:55 -0700
Subject: How to get all the file of a oppoint directory from a FTP
In-Reply-To: <1157523035.616973.44560@b28g2000cwb.googlegroups.com>
References: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>
	<1157523035.616973.44560@b28g2000cwb.googlegroups.com>
Message-ID: <1157524195.455047.144140@b28g2000cwb.googlegroups.com>


John Machin wrote:
> snowf wrote:
> > There are no such a method using to download a whole directory  in  the
> > lib of  ' ftplib '.
> > thanks for anybody's help!
>
> So you'll have to lash one up:
>
> (untested)
>
> Firstly,
>     alist = []
>     ftpobj.retrlines('list', alist.append)
> should get you a list of filenames.
>
> Secondly,
>
> for fname in alist:
>     f = open(fname, "wb")
>     ftpobj.retrbinary('RETR ' + fname, f.write)
>     f.close()
>
> should do the business. Instead of using f.write as the callback, you
> might like to wrap that in a function that counts the bytes received,
> displays progress, etc.
>
> HTH,
> John
Thanks for you reply!
I will have a  try with  your suggest and show the result later.



From george.sakkis at gmail.com  Mon Sep  4 07:02:32 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 4 Sep 2006 04:02:32 -0700
Subject: Better way to replace/remove characters in a list of strings.
In-Reply-To: <edh04n$o0g$1@news.lrz-muenchen.de>
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
	<edh04n$o0g$1@news.lrz-muenchen.de>
Message-ID: <1157367752.806830.317400@m79g2000cwm.googlegroups.com>

Philipp Pagel wrote:

> Chris Brat <chrisBrat at gmail.com> wrote:
> > Is there a better way to replace/remove characters (specifically ' and
> > " characters in my case, but it could be anything) in strings in a
> > list, than this example to replace 'a' with 'b':
>
> x = map(lambda foo: foo.replace('a', 'b'), x)

Or more pythonically:

x = [s.replace('a', 'b') for s in x]

George



From aleax at mac.com  Sun Sep  3 15:19:58 2006
From: aleax at mac.com (Alex Martelli)
Date: Sun, 3 Sep 2006 12:19:58 -0700
Subject: Client-side TCP socket receiving "Address already in use"
	upon	connect
References: <edcrms$auj$1@news.uit.no>
	<mailman.10304.1157280160.27775.python-list@python.org>
	<edefl6$10dc$1@news.uit.no> <edeiqj$11ef$1@news.uit.no>
	<mailman.10309.1157291622.27775.python-list@python.org>
	<1hl2xuf.1we7p812kbt88N%aleax@mac.com>
	<mailman.10317.1157306773.27775.python-list@python.org>
Message-ID: <1hl3613.1d6118b8c728nN%aleax@mac.com>

Felipe Almeida Lessa <felipe.lessa at gmail.com> wrote:

> 2006/9/3, Alex Martelli <aleax at mac.com>:
> > Reflecting on the OP's use case, since all connections are forever being
> > made to the same 16 servers, why not tweak thinks a bit to hold those
> > connections open for longer periods of time, using a connection for many
> > send/receive "transactions" instead of opening and closing such
> > connections all of the time?  That might well work better...
> 
> Connecting to 16 differente servers per second gives a very poor
> performance, right? There's some overhead in creating TCP connections,
> even on fast networks and computers. Am I right?

There is some overhead, yes, but 16 connections per second are few
enough that I wouldn't expect that to be material (on networks with low
latency -- it might be different if you have "long fat pipes", networks
with huge bandwidth and thus "fast" but with high latency -- several
aspects of TCP/IP don't work all that well with those).

For example, try tweaking examples 1 and 2 for chapter 19 of "Python in
a Nutshell" (you can freely download the zipfile w/all examples from
<http://examples.oreilly.com/pythonian/pythonian-examples.zip>) and do
some experiments.  I ran the unmodified server on an iBook G4, and on a
Macbook Pro I ran a client that looped 100 times, connecting, sending
'ciao', receiving the response, and printing a timestamp and the
response just received -- with the two laptops, sitting next to each
other, connected via Ethernet (just 100 mbps on the iBook, thus the
gigabit ethernet on the MBP wasn't really being used well;-) through a
direct cable (using ifconfig by hand to make a tiny 192.168.1/24 LAN
there;-).  The 100 iterations, all together, took a bit more than half a
second (and, of course, one could try tweaking the asyncore or Twisted
examples from the same chapter to let many connections happen at once,
rather than having them "in sequence" as I just did - and many other
such small but interesting experiments).  As a further data point, I
then reran the same experiment after removing the Ethernet cable, so
that the laptops were now connecting through wi-fi (802.11g, 54mbps, the
router being an Airport Express -- everything in the same room, within a
radius of 2 meters, excellent signal reception of course;-): ran in this
way, the 100 iterations took a total of over 2 seconds.


Alex


From fuzzyman at gmail.com  Fri Sep 29 16:20:53 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 29 Sep 2006 13:20:53 -0700
Subject: Mark Lutz Python interview
In-Reply-To: <1159554334.170062.182720@i3g2000cwc.googlegroups.com>
References: <1159554334.170062.182720@i3g2000cwc.googlegroups.com>
Message-ID: <1159561253.807662.309910@h48g2000cwc.googlegroups.com>


Mark Lutz wrote:
> Python author and trainer Mark Lutz will be interviewed
> on the radio show Tech Talk this Sunday, October 1st,
> at 6PM Eastern time.  He'll be answering questions about
> Python, his books, and his Python training services.
>

Does he always talk in the third person ? ;-)

Fuzzyman
http://www.voidspace.org.uk

> For more details about the show, see Tech Talk's website
> at http://techtalk.imi-us.com.  You can also listen to
> the live webcast of the show on KFNX's website,
> http://www.1100kfnx.com.
>
> --Python Training Services
>   http://home.earthlink.net/~python-training



From chris.cavalaria at free.fr  Thu Sep 21 05:31:07 2006
From: chris.cavalaria at free.fr (Christophe)
Date: Thu, 21 Sep 2006 11:31:07 +0200
Subject: Evaluation of Truth Curiosity
In-Reply-To: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
References: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
Message-ID: <45125bd3$0$4772$626a54ce@news.free.fr>

James Stroud a ?crit :
> Hello All,
> 
> I'm curious, in
> 
> py> 0 | (1 == 1)
> 1
> py> False | (1 == 1)
> True
> 
> What is the logic of the former expression not evaluating to True (or 
> why the latter not 1?)? Is there some logic that necessitates the first 
> operand's dictating the result of the evaluation? Or is this an artefact 
> of the CPython implementation?
> 
> James

| is the binary or operator, not the truth value operator. Also, True == 
1 and False == 0. Always use the "or" and "and" keywords for truth 
operations.


From ath-admin at vt.edu  Fri Sep  1 08:21:39 2006
From: ath-admin at vt.edu (rick)
Date: Fri, 01 Sep 2006 08:21:39 -0400
Subject: introspection
In-Reply-To: <mailman.10230.1157091007.27775.python-list@python.org>
References: <ed8458$7od$1@solaris.cc.vt.edu>
	<mailman.10230.1157091007.27775.python-list@python.org>
Message-ID: <ed98sf$3p5$1@solaris.cc.vt.edu>

Fredrik Lundh wrote:
> brad tilley wrote:
> 
>> How do I import a module and then ask it to show me its methods or 
>> other aspects about itself during execution? I'd like to do something 
>> such as this:
>>
>> import win32api
> 
> dir(win32api)
> help(win32api)
> 
> and also
> 
> import inspect
> help(inspect)
> 
> </F>
> 

Great info guys! Thanks.


From claudio.grondi at freenet.de  Fri Sep 15 11:37:15 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Fri, 15 Sep 2006 17:37:15 +0200
Subject: Searching for patterns on the screen
In-Reply-To: <mailman.125.1158327884.10491.python-list@python.org>
References: <mailman.125.1158327884.10491.python-list@python.org>
Message-ID: <450AC8AB.5060306@freenet.de>

Jerry Hill wrote:
> Hello all,
> 
> I have a piece of code I could use some help optimizing.  What I'm
> attempting to do is periodically grab a screenshot, and search for 2D
> patterns of black pixels in it.  I don't care about any color other
> than black.  Here's some simple code that simulates my worst-case
> scenario, scanning the whole screen for a sequence that does not
> exist:
> 
> import ImageGrab  # From the PIL library
> 
> def removeColor(rgb):
>    r, g, b = rgb
>    return (r == 0 and g == 0 and b == 0)
> 
> BMP = ImageGrab.grab.getdata()
> x = map(removeColor, BMP)
> 
> The idea is to search for sequences of black pixels on a background
> that can change colors.  To that end, I transform the screengrab into
> a sequence of either black or nonblack pixels as I search them. Note
> that in my actual code, I use imap so I only transform pixels as I
> search them, and I'm using the KnuthMorrisPratt algorithm from
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/117214 to do
> the actual searching.
> 
>> From some testing using the timeit module:
> 
> map(None, BMP) takes about 0.6 seconds on a 1600x1200 screengrab.
> map(removeColor, BMP) takes about 1.5 seconds.
> 
> I'd love to speed things up, if possible.  It seems like what I'm
> doing would probably be a fairly well defined problem, but I don't
> know enough about the field to even know where to start my research,
> so even a list of keywords that would point me to discussion of
> similar topics would be welcome.
> 
> This is being done in Python 2.5c2 using PIL 1.1.5
> 
Use PIL for grabbing the screenshot and numarray for processing the 
image. See
http://groups.google.com.vc/group/comp.lang.python/browse_thread/thread/6207e7526fb6fdc6/a05646969d59102e
for some further helpful hints towards speeding things up.

Claudio Grondi


From Eric_Dexter at msn.com  Sun Sep  3 22:58:39 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 3 Sep 2006 19:58:39 -0700
Subject: newbe question about removing items from one file to another file
In-Reply-To: <mailman.10099.1156931029.27775.python-list@python.org>
References: <1156714534.318183.326220@i3g2000cwc.googlegroups.com>
	<1156895504.960976.226950@i3g2000cwc.googlegroups.com>
	<mailman.10099.1156931029.27775.python-list@python.org>
Message-ID: <1157338719.276714.7400@74g2000cwt.googlegroups.com>


Anthra Norell wrote:
> Dexter,
>
> Here's a function that screens out all instrument blocks and puts them into a dictionary keyed on the instrument number:
>
> --------------------------------------------
>
> def get_instruments (file_name):
>
>    INSIDE  = 1
>    OUTSIDE = 0
>
>    f = file (file_name, 'ra')
>    state = OUTSIDE
>    instruments = {}
>    instrument_segment = ''
>
>    for line in f:
>       if state == OUTSIDE:
>          if line.startswith ('<CsInstruments'):
>             state = INSIDE
>             instrument_segment += line
>       else:
>          instrument_segment += line
>          if line.lstrip ().startswith ('instr'):
>             instrument_number = line.split () [1]
>          elif line.startswith ('</CsInstruments'):
>             instruments [instrument_number] = instrument_segment
>             instrument_segment = ''
>             state = OUTSIDE
>
>    f.close ()
>    return instruments
>
> ------------------------------------------------
>
> You have received good advice on using parsers: "beautiful soup" or "pyparse". These are powerful tools capable of doing complicated
> extractions. Yours is not a complicated extraction. Simon tried it with "beautiful soup". That seems simple enough, though he finds
> the data by index leaving open where he gets the index from. There's surely a way to get the data by name.
>       Contrary to the parser the function will miss if tags take liberties with upper-lower case letters as they are probably
> allowed by the specification. A regular expression might have to be used, if they do.
>      From your description I haven't been able to infer what the final format of your data is supposed to be. So I cannot tell you
> how to go on from here. You'll find out. If not, just keep asking.
>
> The SE solution which you said couldn't work out would be the following. It makes the same dictionary the function makes and it is
> case-insensitive:
>
> ------------------------------------------------
>
> >>> Instrument_Segment_Filter = SE.SE ('<EAT> "~(?i)<CsInstruments>(.|\n)*?</CsInstruments>~==\n\n"  ')
> >>> instrument_segments= Instrument_Segment_Filter ('file_name', '')
> >>> print instrument_segments
> (... see all instrument segments ...)
> >>> Instrument_Number = SE.SE ('<EAT> ~instr.*~==\n')
> >>> instruments ={}
> >>> for segment in instrument_segments.split ('\n\n'):
>             if segment:
>                instr_line = Instrument_Number (segment)
>                instrument_number = instr_line.split ()[1]
>                instruments [instrument_number] = segment
>
> --------------------------------------------------
>
> (If you're on Windows and the CRs bother you, take them out with an additional definition when you make your
> Instrument_Block_Filter: (13)=  or  "\r=")
>
>
> Regards
>
> Frederic
>
>
> ----- Original Message -----
> From: <Eric_Dexter at msn.com>
> Newsgroups: comp.lang.python
> To: <python-list at python.org>
> Sent: Wednesday, August 30, 2006 1:51 AM
> Subject: Re: newbe question about removing items from one file to another file
>
>
> >
> > Anthra Norell wrote:
> > > Dexter,
> > >
> > > I looked at the format specification. It contains an example:
> > >
> > > -----------------------------------------------
> > >
> > > <CsoundSynthesizer>;
> > >   ; test.csd - a Csound structured data file
> > >
> > > <CsOptions>
> > >   -W -d -o tone.wav
> > > </CsOptions>
> > >
> ...
> etc.

I cut and pasted this..  It seems to be crashing my program.. I am not
sure that I have all the right imports..  seems to be fine when I go to
an older version of the file...  I uploaded it onto source forge.

https://sourceforge.net/project/showfiles.php?group_id=156455&package_id=201306&release_id=444362
http://www.dexrow.com



From reid at umn.edu  Thu Sep  7 21:11:22 2006
From: reid at umn.edu (Reid Priedhorsky)
Date: Thu, 07 Sep 2006 20:11:22 -0500
Subject: Secure Postgres access
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2006.09.08.01.11.22.368386@umn.edu>

On Wed, 06 Sep 2006 09:29:59 -0700, Paul Rubin wrote:

> Reid Priedhorsky <reid at reidster.net> writes:
>> I know how to forward ports using SSH, but I don't like doing this because
>> then anyone who knows the port number can connect to Postgres over the
>> same tunnel. (I'm not the only user on the client machine.)
> 
> Wouldn't they need a database password?

Well, right now, no. I have Postgres configured to trust the OS on who is
who. I would prefer not to change that because I don't want another place
containing authentication information. I'd like to connect by entering
only my SSH password, not my SSH password and a database password too.

This is why straight SSH tunneling, as suggested by Marshall and Larry,
isn't satisfactory: once I've set up the tunnel, anyone on the local
machine can connect to the tunnel and then they have passwordless access
into the database.

I control the database machine, and the only user is me. I don't control
the local machine, and it has many users I don't trust.

Thanks,

Reid



From robin at reportlab.com  Wed Sep 13 09:38:19 2006
From: robin at reportlab.com (Robin Becker)
Date: Wed, 13 Sep 2006 14:38:19 +0100
Subject: Help me use my Dual Core CPU!
In-Reply-To: <7xodtkt48l.fsf@ruckus.brouhaha.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>	<7x8xkol0n9.fsf@ruckus.brouhaha.com>	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>	<mailman.14.1158140507.10491.python-list@python.org>	<7xbqpk5bnc.fsf@ruckus.brouhaha.com>	<mailman.17.1158145066.10491.python-list@python.org>
	<7xodtkt48l.fsf@ruckus.brouhaha.com>
Message-ID: <450809CB.2020907@chamonix.reportlab.co.uk>

Paul Rubin wrote:
> Robin Becker <robin at reportlab.com> writes:
>> No I think they tried to just run a lot of processes at once and they
>> got the 8 core by just substituting the two dual cores with two quads.
> 
> Huh?!  There are no quad core x86 cpu's as far as I know ;).
> 

well these guys seem to think there are, perhaps it's a joke

http://anandtech.com/mac/showdoc.aspx?i=2832&p=6

>> I used occam back in the eighties with ibm pcs and these 4 transputer
>> plugin cards. One of my bosses was Scottish MP and heavily into macro
>> economic modelling (also an inmos supporter). I seem to remember doing
>> chaotic gauss-seidel with parallel equation block solving, completely
>> pointless as the politicos just ignored any apparent results. Back of
>> the envelope is good enough for war and peace it seems.
> 
> Heh :).  OK, yeah, I remember Occam now, it used CSP (communicating
> sequential processes) for concurrency if I remember, sort of like
> Erlang?
> 
>> Is suppose Alice isn't related to the "Alice Machine" which was a
>> tagged pool processor of some kind. I recall it being delivered just
>> when prolog and the like were going out of fashion and it never got
>> faster than a z80 on a hot day.
> 
> No I don't think so.  It's Standard ML with some concurrency extensions
> and a really nice toolkit: 
> 
>    http://www.ps.uni-sb.de/alice/ 
> 
> Actually I'm not sure now whether it supports real multiprocessor
> concurrency.  It looks cool anyway.


-- 
Robin Becker



From aisaac0 at verizon.net  Mon Sep 18 15:54:20 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 18 Sep 2006 19:54:20 GMT
Subject: newbie division question
References: <YMBPg.3328$uj3.1736@trnddc08>
	<1158608090.645965.49970@m7g2000cwm.googlegroups.com>
Message-ID: <MPCPg.3327$W13.2538@trnddc05>

> Alan Isaac wrote:
> > Suppose x and y are ints in moduleA.
> >
> > If I put
> > from __future__ import division
> > in moduleA then x/y will produce the truediv result.
> >
> > If I put
> > from __future__ import division
> > in moduleB
> > and
> > from moduleB import *
> > in module A
> > then x/y will NOT produce the truediv result
> > (in moduleA).

<casevh at comcast.net> wrote in message
news:1158608090.645965.49970 at m7g2000cwm.googlegroups.com...
> The statement "from __future__ import division" in ModuleB influences
> the byte codes generated when ModuleB is compiled. It doesn't influence
> the byte code generated in ModuleA.
> Start python with the "-Qnew" option.


That is pretty good,
but it affects every module I use,
not just my (selected) modules.

Thanks,
Alan

PS Any news on when true division will be the default?




From sanzhiyan at gmail.com  Fri Sep 22 12:22:14 2006
From: sanzhiyan at gmail.com (Saizan)
Date: 22 Sep 2006 09:22:14 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <1158938953.622976.184960@i3g2000cwc.googlegroups.com>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
Message-ID: <1158942134.691147.308530@i42g2000cwa.googlegroups.com>


John Roth wrote:

> The not operator and the bool() builtin produce
> boolean results. Since bool is a subclass of int,
> all the integer operations will remain integer
> operations. This was done for backwards
> compatability, and is unlikely to change in the 2.x
> series.

Ok, shame on me, I completely overlooked "not" and it surprises myself
because it's not like I haven't used it, I just didn't see "not" as an
operator, maybe because i can't find a __not__ method in bool class.
(Is it hidden somewhere or is computed in some other way?)

(However (not x) whould be as annoying as 1-x even if a little more
readable (if you consider lispish parentheses readable):
Input expression: (not (not x)&(not y)!(not (z|v)))
Maybe direct eval is just the wrong way of doing this, I should look
for or make muParser bindings for Python instead..)



From bradfordh at gmail.com  Fri Sep 15 00:07:55 2006
From: bradfordh at gmail.com (Tempo)
Date: 14 Sep 2006 21:07:55 -0700
Subject: Pre-defining an action to take when an expected error occurs
In-Reply-To: <1158292554.492485.143690@h48g2000cwc.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
Message-ID: <1158293275.003995.202010@h48g2000cwc.googlegroups.com>

Thanks for all of the help. It all has been very useful to an new
python programmer. I agree that I should fix the error/bug instead of
handeling it with a try/etc. However, I do not know why
"range(sh.nrows)" never gets the right amount of rows right. For
example, if the Excel sheet has 10 rows with data in them, the
statement "range(sh.nrows)" should build the list of numbers [0,
1,...9]. It should, but it doesn't do that. What it does is buld a list
from [0, 1...20] or more or a little less, but the point is that it
always grabs empy rows after the last row containing data. Why is that?
I have no idea why, but I do know that that is what is producing the
error I am getting. Thanks again for the responses that I have received
already, and again thanks for any further help. Thanks you.



From steve at holdenweb.com  Thu Sep 28 09:57:30 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 14:57:30 +0100
Subject: OT: productivity and long computing delays
In-Reply-To: <7xr6xx2gpn.fsf@ruckus.brouhaha.com>
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>	<mailman.840.1159388059.10491.python-list@python.org>
	<7xr6xx2gpn.fsf@ruckus.brouhaha.com>
Message-ID: <efgkan$mad$2@sea.gmane.org>

Paul Rubin wrote:
> skip at pobox.com writes:
> 
>>    Paul> Anyway, I did the same build on a 2 ghz Athlon 64 and was
>>    Paul> surprised that the speedup was only 35% or so.  I'd have to get a
>>    Paul> multiprocessor box to obtain really substantial gains.
>>
>>Maybe your build process is i/o bound.  If you're using GNU make and have
>>the make dependencies set up properly, the -jN flag (for N = 2 or 3) may
>>speed things up.
> 
> 
> It's almost all CPU-bound on both the Pentium M and the Athlon.  But I
> wasn't as much asking for technical approaches to speeding up
> calculation, as for general strategy about dealing with this downtime
> productively (I figured it was ok to ask this, given the other thread
> about RSI).  My workday is getting chopped up in a manner sort of like
> memory fragmentation in a program, where you end up with a lot of
> disjoint free regions that are individually too small to use.
> 
> As for the technical part, the underlying problem has to do with the
> build system.  I should be able to edit a source file, type "make" and
> recompile just that file and maybe a few related ones.  But the
> results of doing that are often incorrect, and to make sure the right
> thing happens I have to rebuild.  I'm not in a position right now to
> start a side project to figure out what's wrong with the build system
> and fix it.

Well why not study it while the build system is running? Needn't be a 
full-blown project, but it sounds like you might save yourself a lot of 
pain for relatively little effort.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Sat Sep 30 03:35:48 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 08:35:48 +0100
Subject: storing variable names in a list before they are used?
In-Reply-To: <hQeTg.57$1n3.320@news.tufts.edu>
References: <hQeTg.57$1n3.320@news.tufts.edu>
Message-ID: <efl6n0$b0i$2@sea.gmane.org>

John Salerno wrote:
> If I want to have a list like this:
> 
> [(first_name, 'First Name:'), (last_name, 'Last Name:').....]
> 
> where the first part of each tuple is a variable name and the second 
> part is a label for the user to see, such as a form like this:
> 
> First Name: ________
> Last Name:  ________
> 
> (the variables would store whatever information is entered in the text 
> boxes to the right of each label. I'm doing it this way so I can write a 
> loop to construct my GUI components).
> 
> how would I go about putting these variable names in a list? I know I 
> can't leave them as above, but if I put them in as a string, then how do 
> I later "transform" them into an actual variable for assign, such as:
> 
> first_name = widget.get_text()
> 
> Is there some kind of idiom that does this sort of work?
> 
> Thanks.

There are ways you can do this, but the best advice is "don't". If you 
are putting names into a Python namespace that aren't known in advance 
then you also have to use similarly obscure techniques to access the 
variables, and you are running the risk that your code will collide whit 
a name of a variable already used in that namespace by your code.

What's wring with just using a dict to store the values against the 
names? Dicts and namespaces have a lot of behaviour in common.

regard
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From michele.simionato at gmail.com  Fri Sep  1 04:55:26 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 1 Sep 2006 01:55:26 -0700
Subject: a new object definition
In-Reply-To: <ed8rce$ikn$1@trompette.imag.fr>
References: <ed8rce$ikn$1@trompette.imag.fr>
Message-ID: <1157100926.420077.229900@p79g2000cwp.googlegroups.com>

Sylvain Ferriol wrote:
> hello everybody,
>
> i want to talk with you about a question i have in mind and i do not
> find a answer. it 's simple:
> why do we not have a beatiful syntax for object definition as we have
> for class definition ?

See http://www.python.org/dev/peps/pep-0359  (already rejected by
Guido).

   Michele Simionato



From max at alcyone.com  Thu Sep 28 19:28:45 2006
From: max at alcyone.com (Erik Max Francis)
Date: Thu, 28 Sep 2006 16:28:45 -0700
Subject: eval(source, {'builtins': {}}) archived as Faq
In-Reply-To: <1159484841.655115.15190@m7g2000cwm.googlegroups.com>
References: <1159484841.655115.15190@m7g2000cwm.googlegroups.com>
Message-ID: <UoOdnUnUaN0vx4HYnZ2dnUVZ_o2dnZ2d@speakeasy.net>

p.lavarre at ieee.org wrote:

> Absent from http://www.python.org/doc/current/lib/built-in-funcs.html
> but now copied to the Faq list of http://pyfaq.infogami.com/suggest,
> from these clp archives:
> 
> ///
> 
> Q: How can I tell Python to calculate what quoted strings and numbers
> mean, without also accidentally accepting OS commands as input?
> 
> A: eval(source, {'builtins': {}})
> 
> Note: What eval may do to you remains as surprising as ever if you
> mistype this idiom as: eval(source, {})
> 
> Note: This idiom makes sense of ordinary Python literals (such as 010,
> 0x8, 8.125e+0, and "\x45ight").  This idiom also correctly interprets
> simple literal expressions, such as 64**0.5.

This is an _extremely_ bad idea.  _Never_ use eval in a case where you 
are trying to validate input.

 >>> def e(source): return eval(source, {'builtins': {}})
...
 >>> e('__import__("sys").exit()')

Oops, the interpreter exited.

Just when you think you've covered all the bases, you haven't.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   A man's life is what his thoughts make it.
    -- Marcus Aurelius


From goofyheadedpunk at gmail.com  Thu Sep 14 12:49:08 2006
From: goofyheadedpunk at gmail.com (Brian L. Troutwine)
Date: 14 Sep 2006 09:49:08 -0700
Subject: Delete items in nested dictionary based on value.
In-Reply-To: <2C6Og.1078$UG4.655@newsread2.news.pas.earthlink.net>
References: <1158188917.628842.203680@m73g2000cwd.googlegroups.com>
	<2C6Og.1078$UG4.655@newsread2.news.pas.earthlink.net>
Message-ID: <1158252548.447313.149100@i3g2000cwc.googlegroups.com>

> 	Would it not be easier to modify the pretty-printer to ignore such
> entries rather than have to make a duplicate (I presume you have reason
> to need the original dictionary unchanged) dictionary and then delete
> entries that match your "ignore" criteria?

Good question. The data I'm handling relates to books: their ISBN,
pricing information, weight, statistical data for each page, citations
in other books to certain pages, those books statistical data, so on
and so forth. It's too much data, really, but this is what I'm tasked
with handling.

Currently I'm just pretty printing the data, but I'm really cheating
right now. The tool I'm writing is supposed to just collect the data,
strip out all the extranious data based on filters defined at the start
of the collection process and then output all that data to stdout,
where it will be caught by a tool to properly format and display it.

Yesterday morning I got into work, went into deep hack mode, wrote the
entire tool and at the end of the day could not, for the life of me,
figure out the recursion I needed. I suppose I'd spent myself. Who
knows?

Anyway, you are right in that if I did indeed need the original
dictionary unchanged it would be much, much easier to modify the
pretty-printer.

Dennis Lee Bieber wrote:
> On 13 Sep 2006 16:08:37 -0700, "Brian L. Troutwine"
> <goofyheadedpunk at gmail.com> declaimed the following in comp.lang.python:
>
> > arbitrarily large. When pretty printing A, in the context I'm using A
> > for, it's rather helpful to remove all key:value pairs where value is
> > None. So I'd like to be able to define a function dict_sweep to recurse
> > through A and del all the keys with None as a value.
> >
> > I feel like the solution is right on the tip of my tounge, so to speak,
> > but I just can't quite get it. Anyway, here's the best I've come up
> > with:
> >
> 	Would it not be easier to modify the pretty-printer to ignore such
> entries rather than have to make a duplicate (I presume you have reason
> to need the original dictionary unchanged) dictionary and then delete
> entries that match your "ignore" criteria?
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From grahn+nntp at snipabacken.dyndns.org  Mon Sep 11 16:21:51 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 11 Sep 2006 20:21:51 GMT
Subject: ubuntu crash
References: <mailman.198.1157769400.5279.python-list@python.org>
Message-ID: <slrnegb9bm.31i.grahn+nntp@frailea.sa.invalid>

On Fri,  8 Sep 2006 22:36:36 -0400, benjamin.grant at duke.edu <benjamin.grant at duke.edu> wrote:
> I typed in apt-get remove python
> and everything essentially was wiped off my computer.

You should have been told that [long list of important packages] would be
removed as well because they depended on Python, then been asked if you
still wanted to remove Python ...

> [...] I'd like to get my documentst
> back as well but doubt I'll be able to do this.
> [...] but can only log in as root.

Huh? If you can log in, you can certainly get your documents back! Take a
backup of at least /home, /var/spool/mail and /etc to USB stick, a free hard
disk partition, or across the network. Do it before doing anything else.

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From ldo at geek-central.gen.new_zealand  Tue Sep 26 17:03:39 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 09:03:39 +1200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
	<mailman.685.1159279431.10491.python-list@python.org>
Message-ID: <efc4hg$aj8$1@lust.ihug.co.nz>

In message <mailman.685.1159279431.10491.python-list at python.org>, Steve
Holden wrote:

> I suppose you are using a generator to avoid data duplication, but for
> 100,000 records this could be regarded as a premature optimisation on
> modern computers. 

I was using a generator to avoid loading all those 100,000 records into
memory at once.


From dingbat at codesmiths.com  Tue Sep 26 18:31:53 2006
From: dingbat at codesmiths.com (Andy Dingley)
Date: 26 Sep 2006 15:31:53 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159309913.348633.83030@h48g2000cwc.googlegroups.com>


walterbyrd wrote:

> If so, I doubt there are many.

I currently earn my living "programming in Python".

This is particularly amusing given that it's a Java shop and I don't
even know Python!

I've only been using it for a few months as a replacement for the
previous shell scripts and instead of Perl (which I know, but never
liked). I'm nominally the "release manager" which is half tiresome
monkey work and half is building vast Python-powered scripts to
automate the aforementioned monkey work. I don't think I've written
more than a line of actual Java since I've been there.

One thing is sure though - I wouldn't have been _recruited_ as a Python
coder. Supposedly they hired me on the strength of all-round experience
and as a Java hack.



From bdesth.quelquechose at free.quelquepart.fr  Sat Sep 23 17:16:54 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 23 Sep 2006 23:16:54 +0200
Subject: returning None instead of value: how to fix?
In-Reply-To: <sN1Rg.1204$5i7.700@newsreading01.news.tds.net>
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
	<1158956835.466475.162860@i42g2000cwa.googlegroups.com>
	<1158958798.273728.3620@m7g2000cwm.googlegroups.com>
	<sN1Rg.1204$5i7.700@newsreading01.news.tds.net>
Message-ID: <4515a0bc$0$4644$626a54ce@news.free.fr>

Neil Cerutti a ?crit :
(snip)
> It's not out of the kindness of our hearts that we help. Heck, I
> don't know what it is. Probably I just like reading my own drivel
> on the internet and occassionally helping others is a good
> excuse.

Lol !-)

+1 OTQOTW



From bignose+hates-spam at benfinney.id.au  Sun Sep 17 08:29:02 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sun, 17 Sep 2006 22:29:02 +1000
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
Message-ID: <873baqn0c1.fsf@benfinney.id.au>

"Guy Fawkes" <spare_the_rod at spoilthechild.com> writes:

> I was wondering if Python programs always need to include the source
> code with the program itself. I'm asking this because I don't want
> my program to be open-source and so far all the Python programs I've
> seen included the source code.

You can license your own work to anyone you like, under any terms you
choose. The source code to a work is necessary for users to exercise a
free software license, but that doesn't mean that distributing source
code necessarily grants a free software license.

You're right that there is a great amount of Python code available
under free software licenses. No-one can force you to join us, but
you're welcome to.

-- 
 \         "My girlfriend has a queen sized bed; I have a court jester |
  `\   sized bed. It's red and green and has bells on it, and the ends |
_o__)                                      curl up."  -- Steven Wright |
Ben Finney



From steve at holdenweb.com  Tue Sep 19 08:47:50 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 08:47:50 -0400
Subject: How to efficiently proceed addition and subtraction in pythonlist?
In-Reply-To: <eeook1$vtc$1@sea.gmane.org>
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>	<mailman.245.1158619745.10491.python-list@python.org><1158653474.356424.319980@d34g2000cwd.googlegroups.com>	<eeonls$sdt$1@sea.gmane.org>
	<eeook1$vtc$1@sea.gmane.org>
Message-ID: <eeoos7$j0$1@sea.gmane.org>

Fredrik Lundh wrote:
> Steve Holden wrote:
> 
> 
>>And statements like that are probably going to annoy me ;-)
>>
>> >>> t = timeit.Timer("b = map(lambda x: x-1, a)", setup="a=[1,2,3]")
>> >>> t.timeit()
>>2.4686168214116599
>> >>> t = timeit.Timer("b = [x-1 for x in a]", setup="a=[1,2,3]")
>> >>> t.timeit()
>>0.9930245324475635
>> >>>
> 
> 
> And now someone's probably reading this and thinking that list comprehensions
> are *always* faster than "map"...
> 
You are so right. So, let me repeat the important part that Fredrik 
didn't quote:

"""if performance is *really* important, you
need to benchmark both options"""

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From samirbenabid at linuxmail.org  Tue Sep  5 06:18:52 2006
From: samirbenabid at linuxmail.org (samir)
Date: 5 Sep 2006 03:18:52 -0700
Subject: Syntax suggestion.
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
	<slrnefhdtt.flm.sybrenUSE@schuimige.stuvel.eu>
	<1157316221.203928.26090@h48g2000cwc.googlegroups.com>
	<1hl3e8m.1gt0sd580nscuN%aleax@mac.com>
	<1157365545.808068.231270@i42g2000cwa.googlegroups.com>
	<1hl4rxb.1tept6bun11xgN%aleax@mac.com>
Message-ID: <1157451532.245863.241840@i3g2000cwc.googlegroups.com>

Saluton!

Alex Martelli wrote:
> GVIM (and the normal Python interpreter) work better for me: to perform
> such a task, I would always write (and run) a script, of course (the
> purpose of the chroot step is somewhat mysterious here, btw).  If I have
> to perform a strange and complex task once, it's likely that I will have
> to perform some variant of it again in the future, and having the script
> around will make it easy to edit and tweak.  Furthermore, having the
> script around can be a useful indicator when I'm later trying to
> reconstruct exactly what it is that I did.

And that's what any concious humain will do in such situation. What I
ment is that, sometimes, you have to work in real time and have no time
to code->test->debug->... cycle. For example when monitoring or forging
some IP packets (you can fake a "fantom" Sun workstation in your home
network like that ;) and need a realtime custom check function or when
you're using your computer as a "desk scientific calculator" you'd like
to have a flexible, powerfull and light-weight-syntax interpretted
programming language.

That language would be with no doubt Python! But, why not, with lighter
syntax.

Adiaux!
Samir



From roy at panix.com  Sat Sep 23 20:20:12 2006
From: roy at panix.com (Roy Smith)
Date: Sat, 23 Sep 2006 20:20:12 -0400
Subject: assignment hook
References: <1159055894.620401.181760@m7g2000cwm.googlegroups.com>
Message-ID: <roy-8D8198.20201123092006@reader1.panix.com>

paul.lafollette at gmail.com wrote:
> Kind people,
> Is there any way one can, within Python, intercept the act of
> assignment.

Sure.  You just need to define a __setattr__() method for your class.  See  
http://docs.python.org/ref/attribute-access.html for details.

> For instance, suppose that I was obsessed with
> FORTRAN II, and decided that I wanted to print a warning,
> or raise an exception any time someone assigned an int to a
> variable whose name did not start with i,j,k,l,m, or n.

Well, you know the old joke, "You can write Fortran in any language" :-)


From marc.jeurissen at ua.ac.be  Tue Sep 26 15:07:08 2006
From: marc.jeurissen at ua.ac.be (Marc Jeurissen)
Date: Tue, 26 Sep 2006 21:07:08 +0200
Subject: bsddb
Message-ID: <efbtoq$tfh$1@sea.gmane.org>

Hi all,

I have a small web application (Pandion) wich uses the bsddb package on 
Windows XP.
Since Python 2.5 I get an error when accessing the database.

Code snippet:

from bsddb import db
from Pandion.system import registry

Database.__dbEnv = db.DBEnv()
Database.__dbEnv.open(registry.pandion_database_dir,db.DB_INIT_TXN|db.DB_CRE
ATE|db.DB_INIT_MPOOL|db.DB_INIT_LOCK|db.DB_INIT_LOG|db.DB_THREAD)


Error:

"DB_VERSION_MISMATCH: Database environment version mismatch -- Program 
version 4.4 doesn't match environment version 186187776.0"
DBError: -30971


Anyone an idea?

Thanks in advance


Marc Jeurissen



From exarkun at divmod.com  Mon Sep  4 15:27:46 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 4 Sep 2006 15:27:46 -0400
Subject: Twisted vs POS (Plain-old sockets)
In-Reply-To: <d416abde0609041140j798de2b3xf4d857afecbb346a@mail.gmail.com>
Message-ID: <20060904192746.1717.122583742.divmod.quotient.39124@ohm>

On Mon, 4 Sep 2006 11:40:33 -0700, Darren Kirby <bulliver at gmail.com> wrote:
>> As for documentation, many people say it is lacking, but perhaps one person
>> in a thousand points out _how_ or _where_ it is lacking.  Unfortunately it
>> is difficult to improve things (or even determine if they really are lacking)
>> with this level of feedback.
>
>I am certainly not trying to dump on twisted. As for what is lacking,
>the many methods I looked up that say simply "Not Documented" would be
>the biggest problem....

I don't mind dumping :)  I just prefer specific to non-specific.

Hope to see you over on the Twisted list,

Jean-Paul


From rogue_pedro at yahoo.com  Tue Sep  5 23:54:29 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 5 Sep 2006 20:54:29 -0700
Subject: CONSTRUCT -
In-Reply-To: <mailman.10303.1157279220.27775.python-list@python.org>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<1157240956.074166.131100@m79g2000cwm.googlegroups.com>
	<mailman.10303.1157279220.27775.python-list@python.org>
Message-ID: <1157514869.245884.113030@m79g2000cwm.googlegroups.com>

Fredrik Lundh wrote:
> Simon Forman wrote:
>
> > I'm sorry, your post makes very little sense.
>
> you're somewhat new here, right ? ;-)
>
> </F>


Yah, I've been posting here about three months now.   Why, did I miss
something?  :-)

Peace,
~Simon



From steve at holdenweb.com  Wed Sep 27 05:27:33 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 10:27:33 +0100
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <efdego$o1c$3@lust.ihug.co.nz>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>	<mailman.640.1159254809.10491.python-list@python.org>	<efcuf3$qht$2@lust.ihug.co.nz>
	<efd6n2$fbs$1@sea.gmane.org>	<mailman.777.1159341826.10491.python-list@python.org>
	<efdego$o1c$3@lust.ihug.co.nz>
Message-ID: <efdg4i$ghb$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.777.1159341826.10491.python-list at python.org>, Ben Finney
> wrote:
> 
> 
>>Steve Holden <steve at holdenweb.com> writes:
>>
>>
>>>Lawrence D'Oliveiro wrote:
>>>
>>>>Steve Holden wrote:
>>>>
>>>>>The fact remains that Google can chop your searching ability off
>>>>>at the knees ...
>>>>
>>>>No they can't. They can only chop off your ability to use Google.
>>>>
>>>
>>>[sigh]. Right, Lawrence, sorry I wasn't quite explicit enough for you.
>>
>>Seems like a fairly important distinction. Google has the power to
>>"chop your searching ability off at the knees" only to the extent that
>>you grant them that power.
> 
> 
> Saying "search" when you mean "Google" is like saying "using a PC" when you
> mean "using Microsoft Windows".

Well, I thought it was self-evident that since I was referring to Google 
I wasn't talking about Alta Vista searching. If I said "Microsoft have 
the ability to terminate your license" presumably you'd chastise me by 
pointing out that they wouldn't be able to revoke my *Linux* license. 
Whatever.

"There's none as thick as them that wants to be."

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rtw at freenet.co.uk  Fri Sep 22 03:06:11 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Fri, 22 Sep 2006 02:06:11 -0500
Subject: distutils on Windows with VC++ 8
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
	<45136400.5030600@v.loewis.de>
Message-ID: <Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>

Martin v. L?wis wrote in news:45136400.5030600 at v.loewis.de in 
comp.lang.python:

> wandabq at gmail.com schrieb:
>> I'm trying to install two different packages which wrap C or C++ code
>> and which make use of distutils.build_ext, which barfs because my only
>> compiler is too new.  Trying this both on Python 2.4.3 and 2.5.
>> Evidently there is a requirement that the compiler used to build the
>> C/C++ in the installation must be the same as was used to build
>> Python?  Am I understanding that correctly?  
> 
> Yes.
> 
>> What's the workaround?
> 
> There are several work-arounds, but they all come down to
> "get a copy of the one of the supported compilers". The options
> are:
> - get a copy of VS 2003 on Ebay

Download the 1.1 SDK:

<url:http://www.microsoft.com/downloads/details.aspx?familyid=9B3A2CA6-
3647-4070-9F41-A333C6B9181D&displaylang=en>

yes it does have 90 odd megabytes of stuff you don't want but the C/C++
compiler is in there.

> - use cygwin/mingw (should work for C, might not work for
>   C++ if you use MFC or some other MS-compiled library)
> - find the VS 2003 Toolkit; Microsoft took it off the net,
>   but Google may still be able to help

I think the VS 2003 toolkit is a framework for extending Visual Studio 
2003, IOW a bunch of .NET dlls, some examples and a helpfile (no 
compiler).

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From ilias at lazaridis.com  Sun Sep  3 18:16:49 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 3 Sep 2006 15:16:49 -0700
Subject: CONSTRUCT -
In-Reply-To: <1157240956.074166.131100@m79g2000cwm.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<1157240956.074166.131100@m79g2000cwm.googlegroups.com>
Message-ID: <1157321809.690853.19260@i42g2000cwa.googlegroups.com>


Simon Forman wrote:
> lazaridis_com wrote:
> > I would like to fulfill the following task:
> >
> > The construct:
> >
> > if __name__ == '__main__':
> >
> > should be changed to something like:
> >
> > if identifier.name == '__main__':
...

> > Context:
> > http://case.lazaridis.com/wiki/Lang
> > http://case.lazaridis.com/ticket/6
>
> I'm sorry, you post makes very little sense.  If all you want to do is
> implement a less "ugly" verision of "if __name__ == '__main__':", a
> quick search on google should turn up several ways.

this happend already within another thread/ticket:

http://case.lazaridis.com/changeset/45

this here is aboute the underscores in "__name__".

-

search engines are full of information, but when looking for standard
constructs and ways to do something, I rely on feedback from domain
experts.

some search-engine hits:

http://aspn.activestate.com/ASPN/Mail/Message/python-list/830424
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496930
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496920



From jstroud at mbi.ucla.edu  Sat Sep  9 19:08:35 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 09 Sep 2006 23:08:35 GMT
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <1157785166.255442.79730@m73g2000cwd.googlegroups.com>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
	<f2qMg.2654$MF1.1405@newssvr25.news.prodigy.net>
	<1157785166.255442.79730@m73g2000cwd.googlegroups.com>
Message-ID: <TPHMg.17503$%j7.6539@newssvr29.news.prodigy.net>

vbfoobar at gmail.com wrote:
> I have tried their online Text-symbol Pattern Discovery
> with these input values:
> 
> cpkg-30000
> cpkg-31008
> cpkg-3000A
> cpkg-30006
> nsug-300AB
> nsug-300A2
> cpdg-30001
> nsug-300A3

Well, in the realm of sequence analysis, it is trivial to devise a regex 
for these values because they are already aligned and of fixed length. 
This is a couple of more lines than it needs to be, only so its easier 
to follow the logic. This uses throw-away groups to avoid bracketed 
sets, becuase you have dashes in your items. You might need to tweak the 
following code if you have characters special to regex in your sequences 
or if you want to use bracketed sets. The place to do this is in the 
_joiner() function.


values = """
          cpkg-30000
          cpkg-31008
          cpkg-3000A
          cpkg-30006
          nsug-300AB
          nsug-300A2
          cpdg-30001
          nsug-300A3
          """.split()

# python 2.5 has new list comp features to shorten this test, but
# the resulting list comp can begin to look ugly if the alternatives
# are complicated
def _joiner(c):
   if len(c) == 1:
     # will raise KeyError for empty column
     return c.pop()
   else:
     return "(?:%s)" % '|'.join(c)

columns = [set(c) for c in zip(*values)]
col_strs = [_joiner(c) for c in columns]
rgx_str = "".join(col_strs)
exact_rgx_str = "^%s$" % rgx_str

# '(?:c|n)(?:p|s)(?:k|u|d)g-3(?:1|0)0(?:A|0)(?:A|B|1|0|3|2|6|8)'
print rgx_str


But, if you get much more complicated that this, you will definitely 
want to check out hmmer, especially if you can align your sequences.

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From aisaac0 at verizon.net  Mon Sep  4 15:53:03 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 04 Sep 2006 19:53:03 GMT
Subject: methods and functions, instances and classes
References: <y%VKg.3084$%k5.2240@trnddc08>
	<44fc5d59$0$975$626a54ce@news.free.fr>
Message-ID: <zu%Kg.1830$xh4.807@trnddc04>

> Alan Isaac wrote:
> > are method calls actually calls of the class's functions?

"Bruno Desthuilliers" <onurb at xiludom.gro> wrote in message
news:44fc5d59$0$975$626a54ce at news.free.fr...
> Depends on how the method was associated to the instance (you can set
> methods on a per-instance property), but in the general case (functions
> defined in the class body), yes.


[much useful stuff snipped]

Thanks!
Alan




From NoelByron at gmx.net  Fri Sep 22 07:55:48 2006
From: NoelByron at gmx.net (NoelByron at gmx.net)
Date: 22 Sep 2006 04:55:48 -0700
Subject: distutils on Windows with VC++ 8
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
	<45136400.5030600@v.loewis.de>
	<Xns98465271E5B40rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <1158926148.660573.101930@e3g2000cwe.googlegroups.com>

I use the Visual C++ Toolkit 2003 to compile Python extension for
Python 2.4. Once installed, it works well. With and without distutils.
I also have a installation of Visual Studio 2005 on the same machine.

See:
http://www.vrplumber.com/programming/mstoolkit/
for more information.

There are a lot of tools 'missing' in VTK 2003 for example nmake or
cvtres. If you need them, you can copy them from your VS 2005
installation. BTW VTK 2003 does not come with debugging versions of the
runtime libs. That means you can not build debug releases this way.

HTH,
Noel



From bj_666 at gmx.net  Mon Sep 18 17:34:38 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Mon, 18 Sep 2006 23:34:38 +0200
Subject: newbie division question
References: <YMBPg.3328$uj3.1736@trnddc08>
	<1158608090.645965.49970@m7g2000cwm.googlegroups.com>
	<MPCPg.3327$W13.2538@trnddc05>
	<1158612024.373016.253610@k70g2000cwa.googlegroups.com>
	<rKDPg.5016$vD2.4306@tornado.texas.rr.com>
Message-ID: <pan.2006.09.18.21.34.38.918422@gmx.net>

In <rKDPg.5016$vD2.4306 at tornado.texas.rr.com>, Paul McGuire wrote:

> <casevh at comcast.net> wrote in message 
> news:1158612024.373016.253610 at k70g2000cwa.googlegroups.com...
>>
>>> PS Any news on when true division will be the default?
>>
>> Python 3.0 (aka P3K). It is the release that can break backwards
>> compatibility.
>>
>> http://www.python.org/dev/peps/pep-3000/
>>
>> casevh
>>
> 
> Yes, Break Backwards Compatibility is a Level 60 spell, reserved for Night 
> Elf mages.

But new keywords certainly can make it into 2.x releases.  Only Level 10
spells?  :-)

Ciao,
	Marc 'BlackJack' Rintsch


From MrJean1 at gmail.com  Wed Sep 20 19:13:14 2006
From: MrJean1 at gmail.com (MrJean1)
Date: 20 Sep 2006 16:13:14 -0700
Subject: How to evaluate the memory usage of a python program?
In-Reply-To: <1158778472.603820.61450@b28g2000cwb.googlegroups.com>
References: <1158778472.603820.61450@b28g2000cwb.googlegroups.com>
Message-ID: <1158793994.515571.283380@i3g2000cwc.googlegroups.com>

Iff you are using Python on Linux, here is one option which may work
for you

  <http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/286222>

/Jean


Daniel Mark wrote:
> Hello all:
>
> I have a python program and would like to find out the maximum memory
> used
> by this program.
>
> Does Python provide such module so I could check it easily?
> 
> 
> 
> 
> Thank you
> -Daniel



From fiepye at atlas.cz  Wed Sep  6 13:25:20 2006
From: fiepye at atlas.cz (Fie Pye)
Date: Wed, 06 Sep 2006 19:25:20 +0200
Subject: Scientific computing and data visualization.
Message-ID: <dee6e35b8dcf400fa1e98f858fd48a1f@atlas.cz>

        Hallo
	
	I would like to have a high class open source tools for scientific computing and powerful 2D and 3D data visualisation. Therefore I chose python, numpy and scipy as a base. Now I am in search for a visualisation tool. I tried matplotlib and py_opendx with OpenDx. OpenDx seems to me very good but the project py_opendx looks like closed. After py_opendx instalation and subsequent testing I got an error that needs discussion with author or an experienced user. Unfortunately a mail to author returned as undeliverable.
	
	Does anybody now about suitable visualisation tool?
	
	Does anybody have an experience with OpenDx and py_opendx instalation?
	
	Thanks for your response.
	
	fiepye





From fredrik at pythonware.com  Tue Sep 12 12:05:43 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 18:05:43 +0200
Subject: variable update
In-Reply-To: <ee6ft5$a3i$1@sea.gmane.org>
References: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>	<ee6b4h$mor$2@sea.gmane.org>
	<ee6ft5$a3i$1@sea.gmane.org>
Message-ID: <ee6lsm$2u1$1@sea.gmane.org>

Steve Holden wrote:

>> access it, and catch the NameError:
>>
>>     try:
>>         variable
>>     except NameError:
> 
> In a function when accessing a not-yet-bound local variable you may also 
> (as Fredrik knows but didn't bother to say) see an UnboundLocalError 
> exception,

 >>> issubclass(UnboundLocalError, NameError)
True

 >>> # muhaha!

</F>



From MonkeeSage at gmail.com  Fri Sep  8 19:27:30 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 8 Sep 2006 16:27:30 -0700
Subject: how do you get the name of a dictionary?
References: <1155926079.935209.21120@p79g2000cwp.googlegroups.com>
	<1156281268.865624.302070@b28g2000cwb.googlegroups.com>
	<mailman.9666.1156281679.27775.python-list@python.org>
	<1156283135.985893.186500@m73g2000cwd.googlegroups.com>
	<mailman.9668.1156283600.27775.python-list@python.org>
	<1156284812.469380.274370@b28g2000cwb.googlegroups.com>
	<mailman.9686.1156315895.27775.python-list@python.org>
	<1156350580.363393.256730@74g2000cwt.googlegroups.com>
	<mailman.9713.1156351048.27775.python-list@python.org>
	<1157707489.119939.136720@m79g2000cwm.googlegroups.com>
	<mailman.160.1157710534.5279.python-list@python.org>
Message-ID: <1157758049.962831.121290@m73g2000cwd.googlegroups.com>

Simon Brunning wrote:
> On 8 Sep 2006 02:24:49 -0700, MonkeeSage <MonkeeSage at gmail.com> wrote:
> > I guess I don't get the problem with the OP's request, either. There is
> > already a name<->identifier mapping in place for objects.
>
> Do you mean a name<->object mapping?
>
> This, I think, isn't true. There is a name->object mapping, but to
> make that a name<->object mapping *would* carry an overhead. It might
> (or might not) be a *small* overhead, but since every single Python
> program would suffer the consequences, it's just not worth it.
> Especially, as others have pointed out, that it wouldn't really be
> very useful at all.

I'm new here, and I've only been using python for about 6 months; so I
don't claim any deep knowledge of the inner workings of the interpreter
or anything.

Seemingly (and I realize that one or more of my premises may be wrong),
by simple deduction, there must be a two-way name (label) to identifier
mapping. I'm assuming that every object is accessed in the symbol table
by a unique identifier (exposed through id()), and that every name is
mapped to an identifier (some sort of heirarchy would seem to be
involved in the mapping, allowing for recursive objects, multiple names
for single ids, &c). Given this, some sort of look-up strategy would
seem to be in place for resolving objects from identifiers, and
identifiers from names. So if every name is mapped to an identifier,
and every identifier is mapped to an object; given any object, one
should be able to determine its identifier and all of the names
associated with that identifier (if any).

Obviously, that's based on several assumptions. Mabye I'm dead wrong on
some points. Anyhow, I don't think it's a feature that needs to be
there, or would even be useful in most cases; I just don't think it
would be a big issue if it were. If I'm correct, (lack of) usefulness
would be what militates against it being implemented as a core feature,
not the introduction of a size or speed overhead on objects.

Regards,
Jordan



From fredrik at pythonware.com  Sun Sep 24 04:34:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 10:34:31 +0200
Subject: Difficulty with maxsplit default value for str.split
In-Reply-To: <pan.2006.09.24.05.48.22.103431@REMOVE.THIS.cybersource.com.au>
References: <pan.2006.09.24.05.48.22.103431@REMOVE.THIS.cybersource.com.au>
Message-ID: <ef5fum$9lh$2@sea.gmane.org>

Steven D'Aprano wrote:

> I'm having problems passing a default value to the maxsplit argument of
> str.split. I'm trying to write a function which acts as a wrapper to
> split, something like this:
> 
> def mysplit(S, sep=None, maxsplit=None):
>     pre_processing()
>     result = S.split(sep, maxsplit)
>     post_processing()
>     return result
> 
> But the split method doesn't accept a value of None for maxsplit, and I
> don't know what default value I should be using.

     def mysplit(S, *args):
	pre_processing()
	result = S.split(*args)
	post_processing()
	return result

> Is it safe for me to pass -1 as the default to maxsplit, meaning
> "unlimited splits"?

not really.

</F>



From polychrom at softhome.net  Sat Sep 23 09:25:48 2006
From: polychrom at softhome.net (mistral)
Date: 23 Sep 2006 06:25:48 -0700
Subject: Need compile python code
In-Reply-To: <4nknl9Far902U1@individual.net>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
Message-ID: <1159017947.895479.13750@i42g2000cwa.googlegroups.com>


Bjoern Schliessmann ?????(?):

> mistral wrote:
>
> > Need compile python code, source is in html and starts with
> > parameters:
>
> Excuse me?
>
> > #!/bin/sh -
> > "exec" "python" "-O" "$0" "$@"
>
> Is the line break intended?
>
> > I have installed ActivePython for windows.
>
> What exactly do you want?
>
> Python code is always compiled (to byte code) before it's run.
>
> Regards,
>
>
> Bj?rn
>
> --

Just to comple python ode - it creates html page, nothing more, nothing
else.. Just generate one html page.

mistral



From maxm at mxm.dk  Thu Sep  7 06:15:06 2006
From: maxm at mxm.dk (Max M)
Date: Thu, 07 Sep 2006 12:15:06 +0200
Subject: sending emails using python
In-Reply-To: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
Message-ID: <44fff0ea$0$13946$edfadb0f@dread15.news.tele.dk>

sridhar wrote:
> iam having user account on an exchangeserver.
> with that can i send an email using python?
> 
> if iam using the following code iam getting error
> 
> 
> fromAddress = 'sridhar_kasturi at satyam.com'
> toAddress = 'sridhar_kasturi at satyam.com'
> msg = "Subject: Hello\n\nThis is the body of the message."
> import smtplib
> server = smtplib.SMTP("hstmsg002",25)
> server.sendmail(fromAddress, toAddress, msg)


Do yourself a favor and use the email module to construct your messages 
with. Constructing messages by hand can lead you into so many traps. 
Especially if you are using international characters in you messages.


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science

Phone:  +45 66 11 84 94
Mobile: +45 29 93 42 96


From sanzhiyan at gmail.com  Thu Sep  7 15:53:02 2006
From: sanzhiyan at gmail.com (Saizan)
Date: 7 Sep 2006 12:53:02 -0700
Subject: How to stop an [Rpyc] server thread?
Message-ID: <1157658782.629267.250160@b28g2000cwb.googlegroups.com>

I embedded an Rpyc threaded server in a preexistent daemon (an irc
bot), this is actually very simple;
  start_threaded_server(port = DEFAULT_PORT)
then I had the necessity to stop the thread which accept() new
connections without killing the whole app, the thread is simply a while
True that spawn a new thread which serves each connection, so I placed
a flag and a break in this way:
def local_threaded_server(port = DEFAULT_PORT, **kw):
	global stop
	sock = create_listener_socket(port)
	while True:
                newsock, name = sock.accept()
                t = Thread(target = serve_socket, args = (newsock,),
kwargs = kw)
		t.setDaemon(True)
		t.start()
		if stop: break
but, since sock.accept() blocks, when I set stop=True the server wait
one more connection and only then stops.
I tried sock.settimeout(10) before entering the while and so checking
timeout exception on accept() but I experienced a strange behavior, the
clients connections close immediatly, with one of these exceptions on
the client side on their first use of the rpc connection:
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\NetProxy.py", line
82, in __repr__
    return self.__request__("handle_repr", *args)
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\NetProxy.py", line
113, in __request__
    return _get_conn(self).sync_request(handler, _get_oid(self), *args)
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Connection.py",
line 143, in sync_request
    self.serve()
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Connection.py",
line 126, in serve
    type, seq, data = self.channel.recv()
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Channel.py", line
50, in recv
    type, seq, length = struct.unpack(self.HEADER_FORMAT,
self.stream.read(self.HEADER_SIZE))
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Stream.py", line
44, in read
    buf = self.sock.recv(count)
socket.error: (10053, 'Software caused connection abort')

OR
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\NetProxy.py", line
82, in __repr__
    return self.__request__("handle_repr", *args)
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\NetProxy.py", line
113, in __request__
    return _get_conn(self).sync_request(handler, _get_oid(self), *args)
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Connection.py",
line 143, in sync_request
    self.serve()
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Connection.py",
line 126, in serve
    type, seq, data = self.channel.recv()
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Channel.py", line
50, in recv
    type, seq, length = struct.unpack(self.HEADER_FORMAT,
self.stream.read(self.HEADER_SIZE))
  File "C:\Programmi\Python24\lib\site-packages\Rpyc\Stream.py", line
46, in read
    raise EOFError()
EOFError

I'm not an expert in socket programming, but I can't see the
correlation between the "listener socket" being in timeout mode and a
different behavior the other sockets..
Anyhow the main goal is being able to shut down the thread of the rpyc
server, any other way is an appreciated suggestion.



From gandalf at designaproduct.biz  Tue Sep  5 03:39:59 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Tue, 05 Sep 2006 09:39:59 +0200
Subject: py2exe and libxml
In-Reply-To: <edi30s$ll7$1@talisker.lacave.net>
References: <mailman.10340.1157387262.27775.python-list@python.org>
	<edi30s$ll7$1@talisker.lacave.net>
Message-ID: <44FD29CF.6070109@designaproduct.biz>

Amaury Forgeot d'Arc ?rta:
> Laszlo Nagy a ?crit :
>   
>> I wrote a little win32 console application that uses libxml2. It is 
>> working fine. If I create an .exe version, I get this error when I try 
>> to start the program:
>>
>> Traceback (most recent call last):
>>  File "MyProgram.py", line 3, in ?
>>  File "mylib\item.pyc", line 5, in ?
>> ImportError: dynamic module does not define init function (initlibxml2)
>>
>> What is wrong here?
>> Thanks
>>
>>     
>
> A quick Google search reveals a thread in the py2exe-users list:
>
> http://aspn.activestate.com/ASPN/Mail/Message/py2exe-users/3180430
>
> It seems a regression since py2exe 0.6.5, already corrected in CVS trunk.
> And according to another post, version 0.6.3 works fine:
> http://permalink.gmane.org/gmane.comp.python.py2exe/1502
>
>   
Thank you. I need to downgrade until they fix the problem. :-(



From tony.bedford at gmail.com  Wed Sep 27 08:16:12 2006
From: tony.bedford at gmail.com (codefire)
Date: 27 Sep 2006 05:16:12 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <mailman.693.1159282619.10491.python-list@python.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.693.1159282619.10491.python-list@python.org>
Message-ID: <1159359371.847872.201720@h48g2000cwc.googlegroups.com>


Mike C. Fletcher wrote:
>     Job security and easy availability is not the be-all and end-all of
>     happiness in life.  That said, if you know anyone who "just wants a
>     job", please, push them at Java, someone has to spend the next 30
>     years maintaining the Struts and J*EE sites people are putting
>     together today in all those big institutions.
> 

Absolutely spot on Mike! :)

Tony



From bj_666 at gmx.net  Wed Sep 27 22:31:19 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Thu, 28 Sep 2006 04:31:19 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
References: <451b2c0b@news.bezeqint.net>
Message-ID: <pan.2006.09.28.02.31.18.247098@gmx.net>

In <451b2c0b at news.bezeqint.net>, efrat wrote:

> 1. What exactly is a Python list? If one writes a[n], then is the 
> complexity Theta(n)? If this is O(1), then why was the name "list" 
> chosen?

Why not?  It has all the methods one expect from an abstract data type
"list".  It's not the O() behavior but the interface that defines abstract
data types.  If it's a (double) linked list or a dynamical array under the
hood is an implementation detail.

Ciao,
	Marc 'BlackJack' Rintsch


From ralmeida at gmail.com  Tue Sep 19 08:19:32 2006
From: ralmeida at gmail.com (Rob De Almeida)
Date: 19 Sep 2006 05:19:32 -0700
Subject: Compile AST to bytecode?
Message-ID: <1158668372.706298.123280@i3g2000cwc.googlegroups.com>

Hi,

I would like to compile an AST to bytecode, so I can eval it later. I
tried using parse.compileast, but it fails:

>>> import compiler, parser
>>> ast = compiler.parse("42")
>>> parser.compileast(ast)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: compilest() argument 1 must be parser.st, not instance

Any hints?

TIA,
--Rob



From rNOSPAMon at flownet.com  Mon Sep 11 19:13:27 2006
From: rNOSPAMon at flownet.com (Ron Garret)
Date: Mon, 11 Sep 2006 16:13:27 -0700
Subject: BaseHTTPServer weirdness
References: <rNOSPAMon-600F71.11335711092006@news.gha.chartermi.net>
	<mailman.287.1158003082.5279.python-list@python.org>
	<rNOSPAMon-DB87C5.13015311092006@news.gha.chartermi.net>
	<mailman.294.1158010161.5279.python-list@python.org>
Message-ID: <rNOSPAMon-A04998.16132111092006@news.gha.chartermi.net>

In article <mailman.294.1158010161.5279.python-list at python.org>,
 Steve Holden <steve at holdenweb.com> wrote:

> But basically, you aren't providing a CGI environment, and that's why 
> cgi.parse() isn't working.

Clearly.  So what should I be doing?  Surely I'm not the first person to 
have this problem?

I have managed to work around this for now by copying and modifying the 
code in cgi.parse, but this still feels like a Horrible Hack to me.

rg


From qual at tiscali.de  Mon Sep 11 16:10:02 2006
From: qual at tiscali.de (Uwe Hoffmann)
Date: Mon, 11 Sep 2006 22:10:02 +0200
Subject: Running python from a usb drive
In-Reply-To: <1158003262.592863.138430@p79g2000cwp.googlegroups.com>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
Message-ID: <ee4fm8$2elh$1@ulysses.news.tiscali.de>

cjl schrieb:

> 
> 
> I do set pythonpath, see above.
> 
is pythonpath really case insensitive on windows ?


From ej  Thu Sep 28 12:47:47 2006
From: ej (Erik Johnson)
Date: Thu, 28 Sep 2006 10:47:47 -0600
Subject: using the email module
Message-ID: <451bfcca$1@nntp.zianet.com>


    THE GOAL: I need to send an email with a simple ASCII text body and an
attached HTML file.

    I have scripts that send basic emails via the smtplib module that don't
have any attachements and that seems to work fine.  I first looked at the
mimetools modules but it says it is depreceated since 2.3, so I started
trying to use the email module.  Here is a script that basically follows the
second example given in section 7.1.13 of the Python Library Reference
(http://docs.python.org/lib/node162.html).  (***Note that there are some
mistakes in that documentation about module names.***)

    When I run this and view the email I receive in MS Outlook Express, what
I see is the HTML rendered in the body of the message, my body is not seen
anywhere and there is no attachment. (Note: I like to bash MS as much as
anyone: the reality is I need to work with this client - save it)

     I have not read the whole spec for RFC 822 and don't profess to
understand it, but that's the point of having modules like email, right? Am
I misunderstanding something about how I am using 'email' here or is this
module not working right? Does this give you an email with an HTML file
attachement on your client? Can someone kindly point out what I've done
wrong or give me a working example?

Thanks!
-ej

    Here's the script (put in your own email and server if you want to run
it), and the text (with some identifying info stripped) of the email I
receive is below that:


#!/usr/bin/env python

import smtplib
from email.MIMEText import MIMEText
from email.MIMEMultipart import MIMEMultipart


# GLOBAL DATA
#=============
MAIL_SERVER  = 'your_server.com'
MAIL_SUBJECT = "Python.SMTP email test"
MAIL_TO      = 'your_addr at example.com'
MAIL_FROM    = "Python.SMTP email test"


# Create a text/plain message

Body = """\
This is intended to be the body of my email. The HTML below should not
be seen directly in the body but should be a separate attachment.
"""

msg = MIMEMultipart()
msg['Subject'] = MAIL_SUBJECT
msg['From']    = MAIL_FROM
msg['To']      = MAIL_TO
msg.preamble   = Body


html = """\
<html>
<head>
  <title>Sample HTML File</title>
</head>

<body>
  <h1>Can you see this?</h1>
  <p>This is a short paragraph.</p>
</body>

</html>
"""
msg.attach(MIMEText(html, 'html'))
# print msg.as_string()


# Send the message via our own SMTP server, but don't include the
# envelope header.
smtp = smtplib.SMTP(MAIL_SERVER)
smtp.sendmail(MAIL_FROM, [MAIL_TO], msg.as_string())
smtp.close()
# end of python script


Here's the text of the email I received:


Return-Path: <Python.SMTP>
Delivered-To: my_addr at example.com
<several Received headers stripped>
Content-Type: multipart/mixed; boundary="===============1669450343=="
MIME-Version: 1.0
Subject: Python.SMTP email test
From: Python.SMTP email test
To: my_addr at example.com

This is intended to be the body of my email. The HTML below should not
be seen directly in the body but should be a separate attachment.
--===============1669450343==
Content-Type: text/html; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

<html>
<head>
  <title>Sample HTML File</title>
</head>

<body>
  <h1>Can you see this?</h1>
  <p>This is a short paragraph.</p>
</body>

</html>

--===============1669450343==--





From metaperl at gmail.com  Tue Sep 12 02:57:37 2006
From: metaperl at gmail.com (metaperl)
Date: 11 Sep 2006 23:57:37 -0700
Subject: A Comparison of Python Class Objects and Init Files for Program
	Configuration
Message-ID: <1158044257.756075.220910@h48g2000cwc.googlegroups.com>

A Comparison of Python Class Objects and Init Files for Program
Configuration
=============================================================================

Terrence Brannon
bauhaus at metaperl.com
http://www.livingcosmos.org/Members/sundevil/python/articles/a-comparison-of-python-class-objects-and-init-files-for-program-configuration/view



Abstract
--------

Init files serve as a convenient mini-language for configuring
applications. The advantages of such a mini-language are

* non-technical people can edit them.
* program behavior can be configured without modifying the source

The author `has always been suspicious of mini-languages
<http://perlmonks.org/?node_id=428053>`_, initially in the context of
dynamic HTML generation.

This document provides a comparison of two approaches to program
development, the use of `a popular Python mini-language
<http://www.voidspace.org.uk/python/configobj.html>`_ and the use of
`Python class objects <http://www.mired.org/home/mwm/config.html>`_.

The Problem Space
-----------------

I work for a company that takes data in various formats (e.g., CSV,
XML, Filemaker) and integrates them all into our database. The 30 or
so scripts that did this were written in Perl. I was told to rewrite
them and elected to use Python.

The Initial Rewrite Using Init Files
------------------------------------

In the initial version using config files, I used a generic config
file and specialized/overwrote its values with a local one::

  gconfig = ConfigObj("../generic.ini")
  cnf = ConfigObj("local.ini")
  cnf.merge(gconfig)

I then proceeded to login to an FTP server and check for a certain
file and download it if it existed::

  host = ftputil.FTPHost(cnf['ke_ftp']['host'],
                       cnf['ke_ftp']['user'],
                       cnf['ke_ftp']['pass'])

  host.chdir(cnf['ke_ftp']['cwd'])
  found = ""
  for f in host.listdir(host.curdir):
     if f.endswith( cnf['ke_ftp']['filepattern'] ):
        found = f
        print "Downloading", found
        host.download(f, f, 'b')

  if found == "":
     print "No file with pattern", cnf['ke_ftp']['filepattern'], "on
server"
     sys.exit()

Now lets see the object-oriented configuration
----------------------------------------------

Instead of generic and specialized config files, one would initially
think of using inheritance when going for an OO approach. However,
each program can get configuration information from a number of
places. As a result, HAS-A will work better than IS-A in this case::

 class config(object):

   # best to use has-a because we need config info from all over the
place
   import data.config.ke

   ke = data.config.ke.ftp()
   ke.user     = 'dmsdatasystems'
   ke.password = 'sredna?'
   ke.cwd      = 'DMS/companies'
   ke.filepattern = 'companies.csv.gz'

   import data.config.snap
   snap = data.config.snap.ftp()


   """
   import data.storage
   storage = data.storage.logic()
   print dir(storage)
   sys.exit()"""

 class proc(object):

   def __init__(self):
      self.cnf = config()

   def fetch_file(self):
      host = ftputil.FTPHost(self.cnf.ke.host, self.cnf.ke.user,
                             self.cnf.ke.password)
      host.chdir(self.cnf.ke.cwd)

      self.downloaded_file = ""
      for f in host.listdir(host.curdir):
         if f.endswith( self.cnf.ke.filepattern ):
            self.downloaded_file = f
            print "Downloading", f
            host.download(f, f, 'b')
            print "Downloaded", f

      if self.downloaded_file == "":
         print "No file with pattern", self.cnf.ke.filepattern, "on",
self.cnf.ke.host
         sys.exit()




Evaluation
==========

Appearance
----------

Accessing object attributes, IMHO, is much cleaner looking. Compare::

  config['munger']['outfile']

with::

  config.munger.outfile


One takes less characters to type and lacks the noisy quote marks
(that's one of the things I miss from Perl hashes - the ability to
index into hashes using bare words without quotes).

Power
-----

A mini-language is a moving target. They tend to grow and grow over
time, adding more and more ad hoc semantics and peculiarities. I'm on
the ConfigObj mailing list and they are currently discussing how to
handle multi-line config values. In Python, one simply needs to break
out """ and you are done. This epitomizes why I prefer the shortcut
of library over mini-language. The library has the full power of a
widely used, widely debugged language while the mini-language has a
smaller user community and less man hours of development behind it.

Learning Curve
--------------

Again, once you learn Python, you can use it for configuration as well
as programming. And Python is a very readable, clean and regular
language - it doesn't look very different from a configuration
language.

The merits of studying the syntax and semantics of a configuration
language can possibly outweigh the benefits.


Maintenance
-----------

It is harder to hire people with a good background in object
oriented programming than it is to find a "scripter".

By taking the
object-oriented route with this program, I have made it harder for
people to maintain my code in one sense but easier in another. A
well-decomposed OO program, especially in a language as elegant and
powerful as Python, is truly something to enjoy. To those versed in
such technologies, it is probably easier and more fun to extend such a
program.

On the other hand, a config file and a script would allow a person
with average scripting skills, perhaps even with no Python background,
to make small edits and extensions with little difficulty.

Manipulation
------------

Indexing into a hash with strings is a bit more easy to parameterize
than accessing object attributes. For example, to make a tuple of a
list of hash values, you can do this::

[a , b , c] = map ( lambda k: config[k], "key1 key2 key3".split() )

To get attributes from an object is slightly wordier::

[a , b , c] = map ( lambda k: getattr(cnf, k), "key1 key2 key3".split()
)

Self-documenting problem decomposition
--------------------------------------

One thing I really like about the OO approach is that it provided an
affordance to break down the steps of the processing into separate
methods. This leads to self-documenting code::

   if __name__ == '__main__':

      p = proc()

      p.fetch_file()
      p.unzip_file()
      p.munge_data()
      p.snap_upload()
      p.archive_zipdir()

In contrast, when I wrote the program using config files, I had
comments interspersed in the linear stream-of-consciousness script to
break out sections::

#
--------------------------------------------------------------------------
# Fetch DMS file from KE FTP
#
--------------------------------------------------------------------------

Now, granted, one _could_ create bunch of methods and decompose the
problem in that way, it's just that structuring a program with one
or more mini-languages as opposed to object-oriented libraries does
not provide as much of an affordance for such an approach.

This Document
=============

This document was prepared using `reStructuredText
<http://docutils.sourceforge.net/rst.html>`_.



From rupole at hotmail.com  Sat Sep 30 12:52:27 2006
From: rupole at hotmail.com (Roger Upole)
Date: Sat, 30 Sep 2006 12:52:27 -0400
Subject: DAT file compilation
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
	<4o5qhvFd1bddU1@uni-berlin.de>
	<1159574758.612198.141410@i3g2000cwc.googlegroups.com>
	<GOiTg.311$NE6.235@newssvr11.news.prodigy.com>
	<1159576888.862008.286980@m73g2000cwd.googlegroups.com>
Message-ID: <1159635366_33@sp6iad.superfeed.net>

On Windows NTFS file systems, you can add data to a file using named streams.
The extra streams aren't visible from Explorer so the average end-user won't
even know they're there.

        Roger


"Jay" <jaysherby at gmail.com> wrote in message news:1159576888.862008.286980 at m73g2000cwd.googlegroups.com...
> That cgi idea is really cool, but I don't have any web space to host
> the files.  Plus the bandwidth required would be deadly.  I think I'll
> just have to stick to the zip file idea.  The problem with the
> read-only is that this program is aimed at a Windows audience.
>
> James Stroud wrote:
>> Jay wrote:
>> > That's one solution, but I'd rather a file format the end-user can't
>> > easily mess around with.
>>
>> Require the program to be installed as root and installation to be in a
>> read-only directory--or serve the resources to your program from a cgi
>> script somewhere, only to be downloaded when needed. This way, the user
>> would at least have to reverse engineer your program to see where the
>> resources were coming from so they could plug the appropriate query in
>> their web browser.
>>
>> James
>>
>>
>> --
>> James Stroud
>> UCLA-DOE Institute for Genomics and Proteomics
>> Box 951570
>> Los Angeles, CA 90095
>>
>> http://www.jamesstroud.com/
> 




----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From bignose+hates-spam at benfinney.id.au  Sat Sep 16 02:41:11 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 16 Sep 2006 16:41:11 +1000
Subject: float questions
References: <094ng2916miuds69d9l0rul7r893esobu9@4ax.com>
Message-ID: <87d59wmhyw.fsf@benfinney.id.au>

spiffy <dawodu4fun at yahoo.com> writes:

> after some calculations i have this number as a result...
> -7.1054273576010019e-015
>
> what does the 'e' mean? is this an error?

It indicates that this is a number represented with scientific
notation.

    <URL:http://en.wikipedia.org/wiki/Scientific_notation>

-- 
 \      "I got some new underwear the other day. Well, new to me."  -- |
  `\                                                       Emo Philips |
_o__)                                                                  |
Ben Finney



From hgk at et.uni-magdeburg.de  Thu Sep 21 10:41:45 2006
From: hgk at et.uni-magdeburg.de (Hans Georg Krauthaeuser)
Date: Thu, 21 Sep 2006 16:41:45 +0200
Subject: Is it possible to save a running program and reload next time ?
In-Reply-To: <mailman.412.1158845232.10491.python-list@python.org>
References: <mailman.386.1158824225.10491.python-list@python.org>	<FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>
	<mailman.412.1158845232.10491.python-list@python.org>
Message-ID: <eeu8b9$108$1@fuerst.cs.uni-magdeburg.de>

fdu.xiaojf at gmail.com wrote:
> 
> Can objects be saved and reloaded by "Pickle"  ?  I have tried but no
> success.
> 
Yes, that's the intended use of pickle/cPickle. There are examples in
the docs:

http://docs.python.org/lib/module-pickle.html

What have you tried and what didn't work?

Hans Georg


From george.sakkis at gmail.com  Fri Sep  1 14:25:20 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 1 Sep 2006 11:25:20 -0700
Subject: Incremental Progress Report object/closure?
References: <1157134065.116944.70270@m79g2000cwm.googlegroups.com>
Message-ID: <1157135120.318201.312180@b28g2000cwb.googlegroups.com>

Terrence Brannon wrote:

> 'lo all, I'm looking for something that gives feedback to the screen
> every X iterations, reporting
>
> Time elapsed:  0:00:00   X,XXX,XXX records done. speed XXXX/second.
> [Action Label]
>
>
> Such a thingy is useful when one is cranking away at million record
> flat files and one wants to provide feedback to the user lest he bash
> away at the interrupt key in fear of his machine being locked up.
>
> All the best mates,
> -- meta

Check out if any of the progress bar recipes in the Cookbook can be
tweaked to fit the bill:
http://aspn.activestate.com/ASPN/search?query=progress+bar&x=0&y=0&section=PYTHONCKBK&type=Subsection

HTH,
George



From prudek at bvx.cz  Fri Sep 15 10:52:02 2006
From: prudek at bvx.cz (Milos Prudek)
Date: Fri, 15 Sep 2006 16:52:02 +0200
Subject: xmlrpc, extract data from http headers
Message-ID: <200609151652.02283.prudek@bvx.cz>

I perform a XML-RPC call by calling xmlrpclibBasicAuth which in turn calls 
xmlrpclib. This call of course sends a HTTP request with correct HTTP 
headers. The response is correctly parsed by xmlrpclib, and I get my desired 
values. 

However, I also need to get the raw HTTP headers from the HTTP response. There 
is a cookie in the HTTP response and I need to read that cookie.

How could I do that?

-- 
Milos Prudek


From MichaelDMcDonnell at yahoo.com  Thu Sep 14 10:45:35 2006
From: MichaelDMcDonnell at yahoo.com (Michael)
Date: 14 Sep 2006 07:45:35 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <1158225634.359349.187610@k70g2000cwa.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>
	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>
	<mailman.66.1158218413.10491.python-list@python.org>
	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>
Message-ID: <1158245135.725733.21920@k70g2000cwa.googlegroups.com>

John,

Since I'm new to Python, I'm having trouble understanding what this
means (see below). Would appreciate any help.

if strg[-1] == "\0":
    strg = strg[:-1]

Thanks,
MDM

John Machin wrote:
> Fredrik Lundh wrote:
> > Michael wrote:
> >
> > > Thanks for your reply. Just wondering... how are Python strings
> > > formatted? Evidently they're not 0 terminated.
> >
> > have you tried *printing* the thing you got via UDP?
> >
> > to get a programmer-friendly representation of an arbitrary object, use
> >
> >      print repr(obj)
> >
> > (where obj is your string, in this case).
> >
>
> Probably not; there was no indication after the two messages where I
> mentioned repr :-)



From duncan.booth at invalid.invalid  Wed Sep 27 05:47:25 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 09:47:25 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
Message-ID: <Xns984B6DC5B990Bduncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> In message <Xns984B5837B9F7Aduncanbooth at 127.0.0.1>, Duncan Booth
> wrote: 
> 
>> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
>> 
>>>     def EscapeSQLWild(Str) :
>>>         """escapes MySQL pattern wildcards in Str."""
>>>         Result = []
>>>         for Ch in str(Str) :
>>>             if Ch == "%" or Ch == "_" :
>>>                 Result.append("\\")
>>>             #end if
>>>             Result.append(Ch)
>>>         #end for
>>>         return "".join(Result)
>>>     #end EscapeSQLWild
>> 
>> That doesn't quite work. If you want to stop wildcards being
>> interpreted as such in a string used as a parameter to a query, then
>> you have to escape the escape character as well.
> 
> That's part of the separation of function. Note that the above
> function does not generate a MySQL string literal: you must still put
> it through the previously-defined SQLString routine, which will
> automatically escape all the specials added by EscapeSQLWild.
> 
You are still missing the point. I'm not talking about generating a MySQL 
string literal, I'm talking about preventing wildcards characters having 
their special meaning when using the string as a parameter in 
cursor.execute. You still have to escape the escape character, and you have 
to do that before or at the same time as you escape the wildcards. No 
string literals are involved anywhere.

Calling the SQLString routine in this situation would be wrong because it 
would escape characters such as newline which must not be escaped.


From mensanator at aol.com  Tue Sep 12 00:35:28 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 11 Sep 2006 21:35:28 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.308.1158028136.5279.python-list@python.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
Message-ID: <1158035728.028640.75440@h48g2000cwc.googlegroups.com>

Mike Owens wrote:
> On 11 Sep 2006 18:23:50 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
>
> > Can you run your car on diesel fuel?
> >
> > Why not?
> >
> > Because your car's specification says to use gasoline?
> >
> > If your car has been designed to run on diesel, you shouldn't
> > be saying it has gasoline engine. Duh.
>
> No but you can still call it a car with an engine, just as SQLite is a
> SQL database, with an SQL engine.

Seperate the data from the engine and what have you got?
Data with dynamic typing. Data that can't be migrated to
a "real" SQL database because you'll get type mismatches
when strings are inserted into numeric fields. The type affinity
kluge won't help there, will it?

>
> > > Furthermore, I'm not responding to Python's representation of one
> > > thing or another. I am responding to some of the ridiculous and unfair
> > > criticisms directed at SQLite. Whatever Python did or didn't do, or
> > > whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
> > > drug through the mud.
> >
> > Sure it does.
>
> No it doesn't. If you don't like SQLite's design decisions, write your
> own embedded relational database, and stop yapping about something you
> didn't lift a finger to create,

It's not the job of the System Test Engineer to design things.
It's his job to find fault with everything. I just happen to be very
good at finding faults with things.

But no one appreciates my finding those faults.

The Emperor is naked and I'm the only one who can see it.

> but are clearly trying to benefit
> from.
>
> > >From SQLite Homepage
> >   documentation
> >     Available Documentation
> >       Distinctive Features
> >
> > In manifest typing, the datatype is a property of the
> > value itself, not of the column in which the value is
> > stored. SQLite thus allows the user to store any value
> > of any datatype into any column regardless of the declared
> > type of that column. (There are some exceptions to this
> > rule: An INTEGER PRIMARY KEY column may only store
> > integers. And SQLite attempts to coerce values into the
> > declared datatype of the column when it can.)
> >
> > ***********************************************************
> > * The SQL language specification calls for static typing. *
> > ***********************************************************
>
> It calls for other things that many databases don't implement or
> altogether violate as well, so what? Show me how both MS SQL's T-SQL
> and Oracle's PL/SQL procedure languages are so standards compliant
> that you can use the same procedure code in both databases. You can't
> -- precisely because they ignore or outright violate parts of the
> standard as well. What's your position on that? Do some Googling and
> you can easily find 18 ways that Oracle's PL/SQL deviates from the
> standard. And T-SQL is plainly nowhere close.

And how many of those systems use dynamic typing?

>
> > A spcification cannot be a bug (unless it is inconsistent
> > with other specifications). An implementation can be,
> > but a specification cannot.
>
> Then every database implementation, when held up to the SQL standard,
> is equally guilty of being buggy and/or incomplete. Name one database
> that fully conforms to SQL 2003. Can't name one? Then why single out
> SQLite?

Name one where the documentation claims the SQL Language
Specification is a bug.

>
> > > Then what does calling it crappy and goofy suggest?
> >
> > It suggests that the SQLite author is a crackpot.
>
> Crackpot? And now we get to why I took the flamebait -- wonderfully
> constructive comments such as this.
>
> I know SQLite's author. Besides being a nice and clearly very
> intelligent person, he also holds a master's degree in electrical
> engineering from Georgia Tech and a PhD in computer science from Duke
> University. His "crackpot" software is used by Sun, Apple, Symbian,
> Google, AOL, Philips, DLink, and I don't know how many other
> companies, not to mention countless open source projects such as
> Mozilla, PHP, and now Python. But I guess they must all be crackpots
> too.

And a lot of people go to chiropractors. And chiropractors are
nice intelligent people with degrees. And the therapy provided
does good.

Nevertheless, the theory on which it's based is quackery.

>
> It's clear. You're just way too smart for SQLite.

Did you see my solution to Rick Shepard's problem in the
thread "Parsing String, Dictionary Lookups, Writing to 
Database Table"?



From sjmachin at lexicon.net  Mon Sep 25 10:11:32 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 07:11:32 -0700
Subject: unicode, bytes redux
In-Reply-To: <mailman.564.1159191065.10491.python-list@python.org>
References: <mailman.552.1159166294.10491.python-list@python.org>
	<1159173488.326443.245730@d34g2000cwd.googlegroups.com>
	<mailman.564.1159191065.10491.python-list@python.org>
Message-ID: <1159193492.302375.164180@m73g2000cwd.googlegroups.com>


Fredrik Lundh wrote:
> John Machin wrote:
>
> > Actually, what Willie was concerned about was some cockamamie DBMS
> > which required to be fed Unicode, which it encoded as UTF-8, but
> > silently truncated if it was more than the n in varchar(n) ... or
> > something like that.
> >
> > So all he needs is a boolean result: u.willitfit(encoding, width)
>
> at what point in the program would that method be used ?

Never, I hope. Were you taking that as a serious suggestion? Fredrik,
perhaps your irony detector needs a little preventative maintenance :-)

>
> how large are the strings, for typical cases ?

He did mention it several posts ago -- I recall varchar(50) or
something like that. IOW as Duncan Booth said in effect at the start of
the 1st thread, the OP's got more problems that just doubling up on
u.encode('utf8') ...

Cheers,
John



From zeezlo at yahoo.com  Tue Sep 26 22:07:54 2006
From: zeezlo at yahoo.com (zeezlo at yahoo.com)
Date: 26 Sep 2006 19:07:54 -0700
Subject: preserving color ouput of a shell command via os.popen()
Message-ID: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>

Hi everyone

I would like to get the output of a shell process on Linux (eg, "ls
--color=auto") run via os.popen(), filter it and then output parts of
it while preserving any original coloring added by that process.

Doing

child = os.popen("ls --color=auto")
output = child.read()

results in an output string which is free of the escape sequences
generated by ls.

Is there a way to preserve them when I capture whatever the processes
writes to stdout? I could add them manually (or use curses), but then I
would just be duplicating the work done by ls.

Thanks in advance

Juergen



From nil at dev.nul  Sat Sep  2 12:23:37 2006
From: nil at dev.nul (Christian Stapfer)
Date: Sat, 2 Sep 2006 18:23:37 +0200
Subject: Problem loading true-type font with PIL - "solved"
References: <e3b9a$44f8597f$54482a8f$31423@news.hispeed.ch>
Message-ID: <d8339$44f9b228$54482a8f$32099@news.hispeed.ch>

Christian Stapfer wrote:

> After switching from Python 2.3 to 2.4 (Enought),
> PIL throws an exception that did not occur formerly
> (under Python 2.3) when executing
> 
>    ImageFont.truetype(font, size)

<snip/>

> A module seems to be missing: do I have to install something
> in addition to PIL in order to be able to load true-type fonts?

<snip/>

Problem "solved" by rudely installing PIL 1.1.5 for Windows and
Python 2.4 from http://www.pythonware.com/products/pil/
right on top of my existing "Python Enthought Edition--Python
2.4.3 for Windows". This might have destroyed the consistency
of the overall installation, of course. I'm well punished
for installing Enthought Python 2.4.3: Next time I will again
install all packages that I need myself, as I did for Python
2.3, instead of using a prepackaged distribution like Enthought
Python.

Regards (and sorry for having bothered you with my silly
posts about this problem),
Christian Stapfer



From jon+usenet at unequivocal.co.uk  Mon Sep 25 11:13:30 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 15:13:30 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
Message-ID: <slrnehfsgj.6tm.jon+usenet@snowy.squish.net>

In article <4517eecf$0$14036$edfadb0f at dread15.news.tele.dk>, Max M wrote:
> Oh ... because you cannot see a use case for that *documented* 
> behaviour, it must certainly be wrong?

No, but if nobody else can find one either, that's a clue that maybe
it's safe to change.

Here's a point for you - the documentation for cgi.escape says that
the characters "&", "<" and ">" are converted, but not what they are
converted to. Even by your own argument, therefore, code is not
entitled to rely on the output of cgi.escape being any particular
exact string.

> This funktion which is correct by current documentation will be broken 
> by you change.
> 
> def hasSomeWord(someword):
>      import urllib
>      f = urllib.open('http://www.example.com/cgi_escaped_content')
>      content = f.read()
>      f.close()
>      return '"%s"' % someword in content:

That function is broken already, no change required.
I find it amazing that you cannot understand this.


From michele.petrazzo at TOGLIunipex.it  Mon Sep 11 04:26:10 2006
From: michele.petrazzo at TOGLIunipex.it (Michele Petrazzo)
Date: Mon, 11 Sep 2006 08:26:10 GMT
Subject: PIL cannot open TIFF image in Windows
In-Reply-To: <Xns98399FB07666rtwfreenetREMOVEcouk@216.196.109.145>
References: <mailman.208.1157809477.5279.python-list@python.org>
	<Xns98399FB07666rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <C49Ng.102469$zy5.1608421@twister1.libero.it>

Rob Williscroft wrote:

> I downloaded some test images from:
> 
>     	<url:http://www.remotesensing.org/libtiff/images.html>
> 

I do the same and modified your code for try FreeImagePy and the results 
are:

ok: 41  error: 20       total: 61

Better than PIL, but a lot of problems with

lower-rgb-planar- > 8 and flower-rgb-contig- > 8

IrfanView seem that can load all the images...

> Rob.

Bye,
Michele


From jimburton1 at gmail.com  Fri Sep 29 06:48:54 2006
From: jimburton1 at gmail.com (jimburton)
Date: 29 Sep 2006 03:48:54 -0700
Subject: File I/O
In-Reply-To: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
Message-ID: <1159526934.077334.69080@i42g2000cwa.googlegroups.com>


Kirt wrote:
> Hi! I need some help in file I/O
>
> I have an xml file..
[snip]
See http://diveintopython.org/xml_processing/



From iainking at gmail.com  Thu Sep 21 04:32:01 2006
From: iainking at gmail.com (Iain King)
Date: 21 Sep 2006 01:32:01 -0700
Subject: Is it possible to save a running program and reload next time ?
In-Reply-To: <mailman.386.1158824225.10491.python-list@python.org>
References: <mailman.386.1158824225.10491.python-list@python.org>
Message-ID: <1158827521.744249.149690@i42g2000cwa.googlegroups.com>


fdu.xiaojf at gmail.com wrote:
> Hi,
>
> I have a program which will continue to run for several days. When it is
> running, I can't do anything except waiting because it takes over most
> of the CUP time.
>
> Is it possible that the program can save all running data to a file when
> I want it to stop, and can reload the data and continue to run from
> where it stops when the computer is free ?
>
> Regards,
>
> xiaojf

Can't you just use time.sleep to put your program to, uh, sleep?  For
example, time.sleep(10) will effectively pause your program for ten
seconds, making it use very few CPU cycles.  I don't know what
interface you have, but assuming you can pick up a button or a key
press, you can ask for a length of time, or just put your code into a
holding pattern:

def pause():
  paused = True
  while paused:
    time.sleep(1)
    if wake_up_key_pressed:
      paused = False

or with a gui:

paused = False

def pause():
  global paused
  paused = True
  while paused:
    time.sleep(1)

def onWakeUpButton():  #bind this to button
  global paused
  paused = False


Iain



From pavel.starek at gmail.com  Sun Sep  3 12:25:46 2006
From: pavel.starek at gmail.com (pavel.starek at gmail.com)
Date: 3 Sep 2006 09:25:46 -0700
Subject: Help with autotools
References: <mailman.10251.1157114940.27775.python-list@python.org>
Message-ID: <1157300746.887555.207180@m73g2000cwd.googlegroups.com>

Jonh Wendell wrote:
> Hi all! I need help with autotools stuff..
>
> My directory structure:
>
> project_name
>   src
>     main.py
>     others.py
>   data
>     ui.glade
>     images.png
>   po
>     translations.po
>
> I'd like to do something like that:
>
> The files in "src" should be installed at: $prefix/lib/project_name
> The files in "data" should be installed at: $prefix/share/project_name
>
> At $prefix/bin should be create a slink:
>  $prefix/bin/project_name -> $prefix/lib/project_name/main.py
>
> The listen (http://listengnome.free.fr/) does this, but it doesn't use
> autotools...
>
> Can anyone help me?
> I've tried a lot to make this work, but with no success...
>
> Thanks,
> --
> Jonh Wendell Santana
> Analista de Sistemas
>
> http://www.bani.com.br
> MSN: jonhwendell at hotmail.com
> GTalk/Jabber: jonh.wendell at gmail.com
> Linux User #114432

Hi,

in listen project Makefile is shown how to make this thing. URL for SVN
view of Makefile for listen 0.4.3 is:

http://svn.sourceforge.net/viewvc/listengnome/releases/0.4.x/0.4.3/Makefile?view=markup

Cheers, Pavel



From nick at craig-wood.com  Thu Sep  7 07:30:06 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Thu, 07 Sep 2006 06:30:06 -0500
Subject: IronPython on Mono howto
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
Message-ID: <slrnefvtu1.lnh.nick@irishsea.home.craig-wood.com>

sanxiyn at gmail.com <sanxiyn at gmail.com> wrote:
>  Okay, here we go:
[snip]

Thanks for those good instructions - they worked well!

I tried running a test program under mono/linux.

I found I needed to add

  import sys
  sys.path.append("/usr/lib/python2.4")

As per the FAQ to the code.  Setting this in an environment var would
be nice but I didn't find one.

The code then ran fine.  (Its a test suite for my sudoku solver.)

  $ mono ipy.exe ~/Python/sudoku.py -t
  ...........
  ----------------------------------------------------------------------
  Ran 11 tests in 5.533s

Compared to

  $ python2.4 ~/Python/sudoku.py -t
  ...........
  ----------------------------------------------------------------------
  Ran 11 tests in 1.637s

It seems to take about a second to start IronPython vs ~15 ms for
Python2.4, eg

  $ time mono ipy.exe -c pass

  real    0m1.034s
  user    0m1.000s
  sys     0m0.036s

  $ time python2.4 -c pass

  real    0m0.015s
  user    0m0.008s
  sys     0m0.007s

Over all I'm very impressed - it is great to have a new implemention
of Python.  I'm not sure mono is showing it off to its full extent
though!

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From martin at v.loewis.de  Mon Sep 11 16:00:19 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 11 Sep 2006 22:00:19 +0200
Subject: Can I make unicode in a repr() print readably?
In-Reply-To: <mailman.251.1157981461.5279.python-list@python.org>
References: <mailman.218.1157834965.5279.python-list@python.org>	<4503D24C.8020905@v.loewis.de>
	<mailman.251.1157981461.5279.python-list@python.org>
Message-ID: <4505C053.1070307@v.loewis.de>

Terry Hancock schrieb:
> I don't know about the backwards compatibility issue. I'm not sure
> what would be affected.  But "print" frequently generates encoded
> Unicode output if the stream supports it, so there is no guarantee
> whether it produces unicode or string output now.

I'm not worried about the code path that print takes - it is obvious
that Unicode objects are allowed to show up, and will cause
UnicodeErrors if encoding them with the stream encoding fails.

I'm (slightly) worried about other code paths that may be affected.

> I think it's clear
> that str() *must* return an ordinary Python string.

Notice, however, that __str__ may return Unicode objects; those
get silently converted with the system encoding.

> I think what would make sense is for the "print" statement to attempt
> to call __unicode__ on an instance before attempting to call __str__
> (just as it currently falls back from __str__ to __repr__).  That seems
> like
> it would be pretty consistent, right?

This is one option; the other option is that print does not
convert unicode strings returned from __str__ with the system
encoding, but with the stream's encoding. But yes; your approach
might work as well (with the then-incompatibility that __unicode__
will get called in contexts where it wasn't called before).

It will probably be necessary to collect a third and fourth
opinion from python-dev; the actual implementation of whatever
approach gets chosen should be easy. And there should be
documentation changes, of course.

Regards,
Martin


From gdamjan at gmail.com  Sun Sep 17 14:35:57 2006
From: gdamjan at gmail.com (Damjan)
Date: Sun, 17 Sep 2006 20:35:57 +0200
Subject: Is there a way to find IP address?
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
	<mailman.41.1158163545.10491.python-list@python.org>
	<1158301077.702087.55680@k70g2000cwa.googlegroups.com>
Message-ID: <450d9504$0$75037$14726298@news.sunsite.dk>


>> > Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
>> > If a user  is behind a proxy, I will log  proxy's IP address only.
>> > Is there a way how to find a real IP user's address?
>>
>> os.environ["HTTP_X_FORWARDED_FOR"]
>>
>> (but that can easily be spoofed, and is mostly meaningless if the user
>> uses local IP addresses at the other side of the proxy, so you should
>> use it with care)

> How can be HTTP_X_FORWARDED_FOR easily  spoofed? I thought that  IP
> address is not possible change.

I can setup my browser to always send you a fake HTTP_X_FORWARDED_FOR
header.



-- 
damjan


From eric.talevich at gmail.com  Fri Sep 22 22:26:12 2006
From: eric.talevich at gmail.com (Eric)
Date: 22 Sep 2006 19:26:12 -0700
Subject: Replacing line in a text file
In-Reply-To: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
Message-ID: <1158978372.151770.175560@i42g2000cwa.googlegroups.com>


CSUIDL PROGRAMMEr wrote:
> Folks
> I am trying to read a file
> This file has a line containing string  'disable = yes'
>
> I want to change this line to 'disable = no'
>
> The concern here is that , i plan to take into account the white spaces
> also.
>
> I tried copying all file int list and then tried to manipulate that
> list
>
> But the search is not working
>
> Any answer
>
> thanks

Is this a configuration file? Depending on what exactly is in the file,
you may want to either import it directly or parse it -- especially if
"disable = yes" appears more than once in the file.

Could you post an example of the file for us?



From stupidityreigns at gmail.com  Mon Sep 11 17:44:30 2006
From: stupidityreigns at gmail.com (Marty)
Date: Mon, 11 Sep 2006 16:44:30 -0500
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
Message-ID: <f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>

On 9/11/06, Mike Owens <mikeowens at gmail.com> wrote:
> I coworker pointed me to this thread.

Joy for us.

>
> < snipped good information >

In all seriousness, the information you present here is great, and
much appreciated. Your sarcastic, condescending tone kind of gets in
the way of the message, though.

And here is the crux of the issue. Sqlite doesn't follow the standard
for sql. The name certainly implies that it would. This doesn't make
it a crappy product, but it is certainly misleading. I must admit,
that after 10 years of oracle experience, I don't necessarily read all
of the documentation for a new dbms I'm trying out, particularly a
light weigth variety. I get in, and try things. Sometimes I get
bitten, but I learn better that way. I would expect, however, for each
product with 'sql' in the name, to, at least by default, adhere to the
standard. And expectations are what set this conversation up.

But, I don't expect that anything productive will come from the rest
of this thread. Your post had the stink of zealotry all over it, and
we all know what happens when a zealots favorite is questioned.

Again, thanks for the info. It'll serve me well when I'm playing with
sqlite later.


From paddy3118 at netscape.net  Fri Sep  1 18:46:53 2006
From: paddy3118 at netscape.net (Paddy)
Date: 1 Sep 2006 15:46:53 -0700
Subject: Python style: to check or not to check args and data members
In-Reply-To: <ed9vmr$okk$1@news.lysator.liu.se>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
	<1157134700.881039.131440@m73g2000cwd.googlegroups.com>
	<ed9vmr$okk$1@news.lysator.liu.se>
Message-ID: <1157150813.234752.61890@p79g2000cwp.googlegroups.com>


Joel Hedlund wrote:
> > You might try doctests, they can be easier to write and fit into the
> > unit test framework if needed.
>
> While I firmly believe in keeping docs up to date, I don't think that
> doctests alone can solve the problem of maintaining data integrity in
> projects with more comlex interfaces (which is what I really meant to
> talk about. Sorry if my simplified examples led you to believe
> otherwise). For simple, deterministic functions like math.pow I think
> it's great, but for something like BaseHTTPServer... probably not. The
> __doc__'s required would be truly fascinating to behold. And probably
> voluminous and mostly unreadable for humans. Or is there something that
> I've misunderstood?
>
> /Joel

Oh, I was just addressing your bit about not knowing unit tests.
Doctests can be quicker to put together and have only a small learning
curve.
On the larger scale, I too advocate extensive checking of 'tainted'
data from 'external' sources, then assuming 'clean' data is as expected
and doing no explicit further data checks, after all, you've got to
trust your development team/yourself.

- Pad.



From deets at nospam.web.de  Mon Sep 25 14:59:21 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 20:59:21 +0200
Subject: Is there a regular expression for finding email address  ?
In-Reply-To: <1159210461.378231.307430@i42g2000cwa.googlegroups.com>
References: <1159210461.378231.307430@i42g2000cwa.googlegroups.com>
Message-ID: <4nqn89Fbna0nU1@uni-berlin.de>

Lad schrieb:
> Did anyone try to find out a regular expression for finding an email
> address in a text?
> Thank you for the reply

Entering your subject line into google as it is, using the first result 
found, you can get one.

Diez


From webraviteja at gmail.com  Fri Sep 22 10:38:00 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 22 Sep 2006 07:38:00 -0700
Subject: Writing Video conference software for Windows
In-Reply-To: <mailman.457.1158929490.10491.python-list@python.org>
References: <mailman.265.1158667756.10491.python-list@python.org>
	<1158896686.543022.286760@i42g2000cwa.googlegroups.com>
	<mailman.457.1158929490.10491.python-list@python.org>
Message-ID: <1158935879.976718.284670@k70g2000cwa.googlegroups.com>

> Someone said about VNC... I'll take a look, but since it is an
> exercise I need to do it,

Exercises typically need you to implement, not invent (leave that for a
thesis or a dissertation). Rather than invent VNC, you could just
implement it on your own from the specs.

http://realvnc.com/docs/rfbproto.pdf

> I can't just say someone else arelady did that :)

No. But you can build upon it :-). Few construct software from the
scratch.



From sjmachin at lexicon.net  Fri Sep 15 11:16:41 2006
From: sjmachin at lexicon.net (John Machin)
Date: 15 Sep 2006 08:16:41 -0700
Subject: Searching for patterns on the screen
In-Reply-To: <37zOg.1954$vD2.787@tornado.texas.rr.com>
References: <mailman.125.1158327884.10491.python-list@python.org>
	<37zOg.1954$vD2.787@tornado.texas.rr.com>
Message-ID: <1158333401.286945.147870@b28g2000cwb.googlegroups.com>


Paul McGuire wrote:
> "Jerry Hill" <malaclypse2 at gmail.com> wrote in message
> news:mailman.125.1158327884.10491.python-list at python.org...
> > Hello all,
> >
> > I have a piece of code I could use some help optimizing.  What I'm
> > attempting to do is periodically grab a screenshot, and search for 2D
> > patterns of black pixels in it.  I don't care about any color other
> > than black.  Here's some simple code that simulates my worst-case
> > scenario, scanning the whole screen for a sequence that does not
> > exist:
> >
> > import ImageGrab  # From the PIL library
> >
> > def removeColor(rgb):
> >    r, g, b = rgb
> >    return (r == 0 and g == 0 and b == 0)
> >
> > BMP = ImageGrab.grab.getdata()
> > x = map(removeColor, BMP)
> >
> > The idea is to search for sequences of black pixels on a background
> > that can change colors.
>
> I had to do a similar thing using pywinauto to interact with a IE browser
> running an embedded Flash application.  To speed things up, I included psyco
> to compile my functions.
>
> As far as working just in Python, you could remove the tuple unpacking
> inside removeColor, and shorten it to just:
>
> def removeColor(rgb):
>     return rgb==(0,0,0)
>
> or even better:
>
> BLACK = (0,0,0)
> def removeColor(rgb):
>     return rgb==BLACK
>
> By defining BLACK once and just referring to it by name, you also avoid
> dynamically constructing the (0,0,0) tuple in every call.

Bzzzzzt. It's not dynamically constructed. Its a constant (in 2.4 at
least)

| >>> BLACK=(0,0,0)
| >>> def func1(rgb):
| ...    return rgb==BLACK
| ...
| >>> def func2(rgb):
| ...    return rgb==(0,0,0)
| ...
| >>> import dis
| >>> dis.dis(func1)
|   2           0 LOAD_FAST                0 (rgb)
|               3 LOAD_GLOBAL              1 (BLACK)
|               6 COMPARE_OP               2 (==)
|               9 RETURN_VALUE
| >>> dis.dis(func2)
|   2           0 LOAD_FAST                0 (rgb)
|               3 LOAD_CONST               2 ((0, 0, 0))
|               6 COMPARE_OP               2 (==)
|               9 RETURN_VALUE
| >>>


C:\junk>python -mtimeit -s"BLACK=(0,0,0);rgb=(1,1,1)" "rgb==BLACK"
1000000 loops, best of 3: 0.129 usec per loop

C:\junk>python -mtimeit -s"rgb=(1,1,1)" "rgb==(0,0,0)"
1000000 loops, best of 3: 0.127 usec per loop



From rphillips at engineer.co.summit.oh.us  Fri Sep  1 07:02:47 2006
From: rphillips at engineer.co.summit.oh.us (paron)
Date: 1 Sep 2006 04:02:47 -0700
Subject: Pros/Cons of Turbogears/Rails?
In-Reply-To: <WXmIg.20772$gY6.18513@newssvr11.news.prodigy.com>
References: <WXmIg.20772$gY6.18513@newssvr11.news.prodigy.com>
Message-ID: <1157108567.496436.218390@p79g2000cwp.googlegroups.com>


kenneth.m.mcdonald at sbcglobal.net wrote:

> I was initially leaning towards Rails due to maturity,
> but the most recent version of TurboGears seem to have
> fixed a lot of the "ad hoc" feeling I got from previous
> versions. But I'm still very much up in the air.
>
> Thanks,
> Ken

I've found that familiarity with Windows in the Ruby/Rails community is
less than in the Python/TG community. Ruby/Rails seems to have been
mainly *nix until fairly recently.

Sometimes the Windows version of a module or tutorial will lag
significantly. (ldap comes to mind.) Sometimes Windows-oriented
questions get pretty short shrift along the lines of: "Perish the
thought!" or "Why would you?" instead of serious treatment.

It's not a deal-breaker and neither community is perfect in this
respect. I now work mostly with Ruby/Rails, but I did Python/CherryPy
for quite a while, and that's my impression.

Ron



From paul at boddie.org.uk  Mon Sep 11 06:13:02 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 11 Sep 2006 03:13:02 -0700
Subject: egg and modpython
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
Message-ID: <1157969582.029638.136340@i42g2000cwa.googlegroups.com>

Bruno Desthuilliers wrote:
> Wensheng a ?crit :
> > I installed pysqlite2 using easy_install.
> > and got this when using it from modpython:
> > --------------------------------------------------------------------------------------------------
> > Mod_python error: "PythonHandler etc.modpython"

[...]

I applaud you for studying the traceback in more depth than I can find
the motivation for, Bruno. ;-) However, this looks like a program using
some package installed by setuptools/easy_install needs to unpack that
package when running.

> > ExtractionError: Can't extract file(s) to egg cache
>
> > The following error occurred while trying to extract file(s) to the
> > Python egg cache:
>
> >   [Errno 13] Permission denied: '/var/www/.python-eggs'

And this wants to happen apparently in the home directory of the Web
server user, whose rights may be somewhat limited. Or perhaps one has
to initialise setuptools for any particular user by running it first as
that user: something that isn't a particularly common thing to do with
non-interactive users on UNIX-like systems.

[...]

> > Can peak developers fix this please?
>
> Why should they "fix" something that's
> 1/ documented
>     -> http://peak.telecommunity.com/DevCenter/EggFormats#zip-file-issues

"The Internal Structure of Python Eggs / STOP! This is not the first
document you should read!" A case of "Beware of the Leopard" perhaps?

> 2/ not a an egg specific issue

In my experience, most other package managers actually unpack their
resources when invoked, rather than leaving the programs to attempt
such things when running. Debian packages even compile the bytecode
files to ensure that nothing tries (and fails) to write them to
privileged locations afterwards.

> 3/ really just a configuration/permission problem

Which should have been solved when the package manager was invoked,
especially since this was most likely done as root.

[...]

> > in the mean time, I just have to use old "download, unzip/untar &&
> > python setup.py install" way.
>
> No - you have to read the manual and fix you configuration. FWIW, the
> above traceback gives far enough clues (it's even written in all letters).

The various ways to deal with this include running easy_install as the
Web server user so that it can touch the directory and whatever else it
needs, and perhaps to set up various permissions - something you
wouldn't usually do; running easy_install with the --always-unzip flag
when installing the package as root; using python setup.py install as
usual.

This situation looks either a lot like a use case whose popularity has
been underestimated by the developers - intriguing given the number of
people supposedly using setuptools for their Web application
deployments - or a packaging mistake with the pysqlite2 .egg file.
Either way, system packages rarely suffer from this kind of problem,
and it's quite understandable (and justifiable) to consider this bad
behaviour.

> Or you may read easy_install's doc to avoid installing zipped eggs:
> http://peak.telecommunity.com/DevCenter/EasyInstall#compressed-installation

Perhaps the developers should reverse their defaults and emulate the
usual behaviour of package managers, unfashionable as that may seem.

Paul



From larry.bates at websafe.com  Thu Sep 28 09:50:42 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 28 Sep 2006 08:50:42 -0500
Subject: XSLT speed comparisons
In-Reply-To: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
Message-ID: <451BD332.1080505@websafe.com>

Damian wrote:
> Hi, I'm from an ASP.NET background an am considering making the switch
> to Python. I decided to develop my next project in tandem to test the
> waters and everything is working well, loving the language, etc.
> 
> What I've got is:
> two websites, one in ASP.NET v2 and one in Python 2.5 (using 4suite for
> XML/XSLT)
> both on the same box (Windows Server 2003)
> both using the same XML, XSLT, CSS
> 
> The problem is, the Python version is (at a guess) about three times
> slower than the ASP one. I'm very new to the language and it's likely
> that I'm doing something wrong here:
> 
> from os import environ
> from Ft.Lib.Uri import OsPathToUri
> from Ft.Xml import InputSource
> from Ft.Xml.Xslt import Processor
> 
> def buildPage():
>     try:
>         xsluri = OsPathToUri('xsl/plainpage.xsl')
>         xmluri = OsPathToUri('website.xml')
> 
>         xsl = InputSource.DefaultFactory.fromUri(xsluri)
>         xml = InputSource.DefaultFactory.fromUri(xmluri)
> 
>         proc = Processor.Processor()
>         proc.appendStylesheet(xsl)
> 
>         params = {"url":environ['QUERY_STRING'].split("=")[1]}
>         for i, v in enumerate(environ['QUERY_STRING'].split("/")[1:]):
>             params["selected_section%s" % (i + 1)] = "/" + v
> 
>         return proc.run(xml, topLevelParams=params)
>     except:
>         return "Error blah blah"
> 
> print "Content-Type: text/html\n\n"
> print buildPage()
> 
> You can compare the development sites here:
> asp: http://consultum.pointy.co.nz/about/team
> python: http://python.pointy.co.nz/about/team
> 
> Cheers!
> 
For max speed you might want to try pyrxp:

http://www.reportlab.org/pyrxp.html

-Larry


From uid09012_ti at martin-collins.de  Fri Sep  8 09:48:31 2006
From: uid09012_ti at martin-collins.de (Francach)
Date: 8 Sep 2006 06:48:31 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <1157720105.181682.169290@m73g2000cwd.googlegroups.com>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
	<1157720105.181682.169290@m73g2000cwd.googlegroups.com>
Message-ID: <1157723311.085204.168070@i42g2000cwa.googlegroups.com>

Hi George,

Firefox lets you group the bookmarks along with other information into
directories and sub-directories. Firefox uses header tags for this
purpose. I'd like to get this grouping information out aswell.

Regards,
Martin.


the idea is to extract.
George Sakkis wrote:
> Francach wrote:
> > George Sakkis wrote:
> > > Francach wrote:
> > > > Hi,
> > > >
> > > > I'm trying to use the Beautiful Soup package to parse through the
> > > > "bookmarks.html" file which Firefox exports all your bookmarks into.
> > > > I've been struggling with the documentation trying to figure out how to
> > > > extract all the urls. Has anybody got a couple of longer examples using
> > > > Beautiful Soup I could play around with?
> > > >
> > > > Thanks,
> > > > Martin.
> > >
> > > from BeautifulSoup import BeautifulSoup
> > > urls = [tag['href'] for tag in
> > >         BeautifulSoup(open('bookmarks.html')).findAll('a')]
> > Hi,
> >
> > thanks for the helpful reply.
> > I wanted to do two things - learn to use Beautiful Soup and bring out
> > all the information
> > in the bookmarks file to import into another application. So I need to
> > be able to travel down the tree in the bookmarks file. bookmarks seems
> > to use header tags which can then contain a tags where the href
> > attributes are. What I don't understand is how to create objects which
> > can then be used to return the information in the next level of the
> > tree.
> >
> > Thanks again,
> > Martin.
>
> I'm not sure I understand what you want to do. Originally you asked to
> extract all urls and BeautifulSoup can do this for you in one line. Why
> do you care about intermediate objects or if the anchor tags are nested
> under header tags or not ? Read and embrace BeautifulSoup's philosophy:
> "You didn't write that awful page. You're just trying to get some data
> out of it. Right now, you don't really care what HTML is supposed to
> look like."
> 
> George



From steve at holdenweb.com  Thu Sep 28 11:42:07 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 16:42:07 +0100
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <B53AC85D-1734-41A5-9583-9917E0BADE40@BrendonTowle.com>
References: <mailman.1980.1159437004.10490.python-list@python.org>
	<B53AC85D-1734-41A5-9583-9917E0BADE40@BrendonTowle.com>
Message-ID: <efgqet$ev9$1@sea.gmane.org>

Brendon Towle wrote:
> Some of your Lisp translations are subtly off...
> 
> 
> 
>>Date: 28 Sep 2006 02:49:50 -0700
>>From: "sturlamolden" <sturlamolden at yahoo.no>
>>Subject: Re: Questions on Using Python to Teach Data Structures and
>>	Algorithms
>>To: python-list at python.org
>>
>>If you want to make a chained structure, then perhaps you know LISP?
>>This is what the basic machinery of LISP looks like in Python:
>>
>>def cons(a,b)
>>   return [a,b]
> 
> 
> should be:
>      return [a].extend(b)
> 
But surely this will return None?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From http  Sun Sep 17 11:02:45 2006
From: http (Paul Rubin)
Date: 17 Sep 2006 08:02:45 -0700
Subject: Python blogging software
References: <1158132558.3622.29.camel@devilbox>
	<mailman.7.1158132885.10491.python-list@python.org>
	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>
	<mailman.50.1158182707.10491.python-list@python.org>
	<1158183929.155925.6050@m73g2000cwd.googlegroups.com>
	<mailman.194.1158464227.10491.python-list@python.org>
	<7xpsdvup0b.fsf@ruckus.brouhaha.com>
	<mailman.204.1158504522.10491.python-list@python.org>
Message-ID: <7xzmcyzgbu.fsf@ruckus.brouhaha.com>

Steve Holden <steve at holdenweb.com> writes:
> > Fancy frameworks do use caching, but I think of that as a kludgy
> > workaround for lousy performance of the framework itself.  A fast
> > framework should not need caching, except maybe caching gzip output
> > for large blocks of contiguous text.
> The value of caching is mostly for heavy-duty applications built on
> top of the framework. The framework has no control over how much
> computation the application does, but can offer savings by
> "short-circuiting" the repeated execution of lengthy page computations
> in application code.

Fair enough.  I shouldn't have said "lousy performance of the
framework itself" when I should have included the application.  If the
application's page computations are so lengthy, then they too need
speeding up.  

We've got a situation where some big sites (Slashdot, Wikipedia) have
a lot of cached static pages for non-logged-in users (they all see the
same thing), but any user who is logged in sees a version customized
by their preferences, that's usually not cached.  So there's a
perverse incentive to not log in, since you see the static page
faster.

I'd really like to get hold of a big active blog or BBS server to
profile it.  It's been puzzling me for years what makes them so slow.
They just paste user-contributed content together with HTML from
templates, so you'd think it shouldn't be too complicated.


From gagsl-py at yahoo.com.ar  Tue Sep 12 18:49:52 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 19:49:52 -0300
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee7cjm$jjl$1@sea.gmane.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
	<mailman.374.1158080179.5279.python-list@python.org>
	<1158098086.576040.69310@e63g2000cwd.googlegroups.com>
	<ee7cjm$jjl$1@sea.gmane.org>
Message-ID: <7.0.1.0.0.20060912194359.0590abf8@yahoo.com.ar>


>Paul Boddie wrote:
>
> > Don't ask me! :-) I found it awkward enough scrolling up and down an n
> > * 100 page plain text document formatted for a line printer in my Web
> > browser, let alone spending time working out the cross-references
> > throughout the text, all in the five to ten minutes I spent looking
> > this up.

I remember that one of my very first Python scripts was to convert 
the SQL92 grammar -unusable otherwise- into an html cross-referenced version...


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From sjmachin at lexicon.net  Fri Sep  8 19:02:11 2006
From: sjmachin at lexicon.net (John Machin)
Date: 8 Sep 2006 16:02:11 -0700
Subject: best split tokens?
In-Reply-To: <mailman.182.1157751737.5279.python-list@python.org>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
	<mailman.182.1157751737.5279.python-list@python.org>
Message-ID: <1157756531.475390.100210@b28g2000cwb.googlegroups.com>


Tim Chase wrote:
> > py> import re
> > py> rgx = re.compile(r'(?:\s+)|[()\[\].,?;-]+')
> > py> [s for s in rgx.split(astr) if s]
> > ['Four', 'score', 'and', 'seven', 'years', 'ago', 'our', 'forefathers',
> > 'who', 'art', 'in', 'heaven', 'hallowed', 'be', 'their', 'names', 'did',
> > 'forthwith', 'declare', 'that', 'all', 'men', 'are', 'created', 'to',
> > 'shed', 'their', 'mortal', 'coils', 'and', 'to', 'be', 'given', 'daily',
> > 'bread', 'even', 'in', 'the', 'best', 'of', 'times', 'and', 'the',
> > 'worst', 'of', 'times', 'With', 'liberty', 'and', 'justice', 'for',
> > 'all', 'William', 'Shakespear']
>
> This regexp could be shortened to just
>
> 	rgx = re.compile('\W+')
>
> if you don't mind numbers included you text (in the event you
> have things like "fatal1ty", "thing2", or "pdf2txt") which is
> often the case...they should be considered part of the word.
>
> If that's a problem, you should be able to use
>
> 	rgx = re.compile('[^a-zA-Z]+')
>
> This is a bit Euro-centric...

I'd call it half-asscii :-)

> ideally Python regexps would support
> Posix character classes, so one could use
>
> 	rgx = re.compile('[^[:alpha:]]+')
>
>
> or something of the like...however, that fails on my python2.4 here.
>
> -tkc

Not picking on Tim in particular; try the following with *all*
suggestions so far:

textbox = "He was wont to be alarmed/amused by answers that won't work"

The short answer to the OP's question is that there is no short answer.
This blog note (and the papers it cites) may help ...

http://blogs.msdn.com/correcteurorthographiqueoffice/archive/2005/12/07/500807.aspx

Cheers,
John



From wescpy at gmail.com  Sat Sep 30 13:49:03 2006
From: wescpy at gmail.com (wesley chun)
Date: Sat, 30 Sep 2006 10:49:03 -0700
Subject: Python/UNO/OpenOffice?
Message-ID: <78b3a9580609301049y6eef219cy18f89abc58b55e68@mail.gmail.com>

as others have said, that project provides a working interface to OOo
(OpenOffice 2 on Ubuntu Breezy and Dapper).  i've made several posts
to this regard over the summer here on CLP.  i was mostly using it to
"mess around" with documents in StarWriter.

cheers,
-- wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From rdiaz02 at gmail.com  Tue Sep 26 16:50:20 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Tue, 26 Sep 2006 22:50:20 +0200
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <624934630609261350p7d23853flab66e656d7981529@mail.gmail.com>

On 9/26/06, John Salerno <johnjsal at nospamgmail.com> wrote:
> It's a nice thought that a person can earn a living programming with
> Python, which is fun enough to use just for its own sake. But for
> someone like me (i.e. no programming experience) it's always a little
> disheartening to see that most (if not all) job descriptions that ask
> for Python still require some C/C++ or other language knowledge. I
> suppose this isn't an issue if you studied CS in college, because you
> would have been exposed to many languages.
>
> But what if you are an expert Python program and have zero clue about
> other languages? Can you still earn a living that way, or do most/all
> companies require multiple language proficiency?
>
> (I suppose this isn't exactly a Python problem, either. I'm sure even
> companies that don't use Python still use multiple languages. Maybe it
> isn't a good idea to focus entirely on a single language, depending on
> the job at hand.)

I am not really a programmer by training (though I spend most of my
working time programmer, doing stats and bioinformatics), but when I
look at a CV, I do not like to see just a single language, because
that means your perspective and views of programming can be very
narrow (I know a few bioinformaticians, who only know Perl, who think
that hash tables are "a Perl thing"). It could also mean that some
classic books in programming (such as Programming Pearls, or The
practice of programming) could sound completely foreingn. And I think
it is unlikely that Python will really solve _all_ of your programming
needs. (I mean, don't you ever find the solution is easier to obtain
with a one line awk or sed call than with Python? Or, if you do stats,
would you reprogram a whole glm in Python instead of just using R? Or
...) If I remember correctly, "The pragmatic programmers" book
recommended that a programmer learn a new program each year.

The piece "Teach yourself programming in ten years"
(http://www.norvig.com/21-days.html)  has some very interesting
comments, further references, and comments on other languages.

HTH,

R.

> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From tiarno at sas.com  Thu Sep 14 16:54:59 2006
From: tiarno at sas.com (Tim Arnold)
Date: Thu, 14 Sep 2006 16:54:59 -0400
Subject: xinclude and pathnames
References: <ee9231$mpj$1@foggy.unx.sas.com>
	<eebkgl$u90$1@foggy.unx.sas.com><Xns983E9DE2BCAB7rtwfreenetREMOVEcouk@216.196.109.145>
	<mailman.99.1158253686.10491.python-list@python.org>
Message-ID: <eecfj3$du0$1@foggy.unx.sas.com>

"Fredrik Lundh" <fredrik at pythonware.com> wrote in message 
news:mailman.99.1158253686.10491.python-list at python.org...
> Rob Williscroft wrote:
>
>> The default handler just sees the href value as a filename, so you
>> should be able to use a relative path if you os.chdir() to the working
>> directory before processing you xml file.
>
> and if that's not good enough, writing a custom loader is trivial (see the 
> default_loader implementation in ElementInclude.py for details).
>
> </F>

Thanks for the information--I just tested Rob's idea, which works fine for 
my case. You guys saved me a bunch of hair-pulling. I'm going to check out 
the default_loader implementation too.

--Tim Arnold




From steve at holdenweb.com  Sat Sep 30 17:58:40 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 22:58:40 +0100
Subject: builtin regular expressions?
In-Reply-To: <efmgtt$q1m$1@mlucom4.urz.uni-halle.de>
References: <451e37a5$1@news.vo.lu><87k63ly1gi.fsf@gmail.com>	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de>
	<877izlxsiy.fsf@gmail.com>	<efm4se$mm2$1@mlucom4.urz.uni-halle.de>
	<451ea5cc$1@news.vo.lu>	<1159642479.968928.34760@k70g2000cwa.googlegroups.com>
	<efmgtt$q1m$1@mlucom4.urz.uni-halle.de>
Message-ID: <efmp8u$edp$1@sea.gmane.org>

Mirco Wahab wrote:
> Thus spoke MRAB (on 2006-09-30 20:54):
> 
>>Antoine De Groote wrote:
>>
>>>I just have to learn accept the fact that Python is more verbose more
>>>often than Ruby (I don't know Perl really). 
>>
>>One of the differences between the Python way and the Perl way is that
>>the Perl way has a side-effect: Perl assigns to the variables $1, $2,
>>etc. each time you execute a regular expression whereas Python just
>>returns a match object for each, so it's not overwriting the results of
>>the previous one. I find the Python way cleaner.
> 
> 
> This statement reduces to the fact, that
> 
>  - in Python you keep the matches if you want,
>    but drop them if you don't
> 
>    import re
>    text = "this is 5 some 89 stuff 12 with numbers 21 interspersed"
>    matches =  re.split('\D+', text)
> 
>  - in Perl you keep the matches if you want,
>    but drop them if you don't
> 
>    $text = "this is 5 some 89 stuff 12 with numbers 21 interspersed";
>    @matches = $text=~/(\d+)/g;
> 
> I fail to see the benefit of a re-object, I consider these to
> be just there because regexes aren't in the core language.
> 
Fine. Just because you fail to see the benefit, however, that doesn't 
mean there isn't one. Maybe we just aren't explaining it in terms you 
can appreciate?

regards
  Stve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From onurb at xiludom.gro  Fri Sep  1 04:58:31 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 10:58:31 +0200
Subject: a new object definition
In-Reply-To: <ed8rce$ikn$1@trompette.imag.fr>
References: <ed8rce$ikn$1@trompette.imag.fr>
Message-ID: <44f7f638$0$29501$626a54ce@news.free.fr>

Sylvain Ferriol wrote:
> hello everybody,
> 
> i want to talk with you about a question i have in mind and i do not
> find a answer. it 's simple:
> why do we not have a beatiful syntax for object definition as we have
> for class definition ?

Python's classes are objects too - instances of their metaclass.

> we can define a class in python in 2 ways:
>  1. by using the metaclass constructor
>    my_class = MyMetaClass(....)
>  2. by using the classic definition syntax:
>    class my_class(object):
>       __metaclass__ = MyMetaClass
> 
> if i want to instanciate an object, i only have one way to define it:
>  my_obj = my_class(....)
>
> why not a better syntax like class syntax ?
>
> example:
>>> instance my_obj:
>>>   __class__ = my_class

I fail to see how it's "better", nor what would be the use case. But
anyway I think it could be possible by using the metaclass as class and
the class as instance. Just make sure the metaclass wraps all methods
into classmethods and you should be done.

> 
> with this syntax, we are coherent between objects and classes.
> why do we have a specific syntax for the class object definition and not
> for objects of different type?
> 
> so if i want to define a new class object (my_class for example) with a
> new object syntax:
>>> instance my_class:
>>>   __class__ = object
>>>   __metaclass__ = MyMetaClass
>>>   ....
> 
> thanks
> 
> Sylvain Ferriol
> Ing?nieur de recherche
> Laboratoire TIMC/IMAG
> http://www-timc.imag.fr/
> 


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From fredrik at pythonware.com  Thu Sep 14 03:33:21 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 09:33:21 +0200
Subject: Are Python's reserved words reserved in places they dont need
	to   be?
In-Reply-To: <1158212889.3622.94.camel@devilbox>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>	<7x4pvckyyu.fsf@ruckus.brouhaha.com>	<slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>
	<ee8fio$a4g$1@sea.gmane.org> <1158212889.3622.94.camel@devilbox>
Message-ID: <eeb0k1$hh6$1@sea.gmane.org>

Cliff Wells wrote:

>> patch here:
>>
>> http://mail.python.org/pipermail/python-list/2001-June/047996.html
> 
> Did you happen to remember this post or is Google *really* your friend?

Have you taken The Oath? If not, I'm afraid I cannot tell you.

</F>



From sjmachin at lexicon.net  Tue Sep  5 19:08:04 2006
From: sjmachin at lexicon.net (John Machin)
Date: 5 Sep 2006 16:08:04 -0700
Subject: =?iso-8859-1?q?Re:_How_to_allow_special_character's_like_=EF, =F9,
	acute_e_etc...?=
In-Reply-To: <1157440337.996056.88220@i3g2000cwc.googlegroups.com>
References: <1157440337.996056.88220@i3g2000cwc.googlegroups.com>
Message-ID: <1157497683.882369.34160@h48g2000cwc.googlegroups.com>

sonald wrote:
> Dear All,
> I am working on a module that validates the provided CSV data in a text
> format, which must be in a predefined format.
> We check for the :
>
[snip]
>
> 3. valid-text expressions,
>         Example:
>             ValidText('Minor', '[yYnN]')
>
>     Parameters:
>             name    => field name
>             regex   => the regular expression y/Y for Yes & n/N for No
>
> Recently we are getting data, where, the name contains non-english
> characters like: ' ATHUMANI? ', ' LUCIANA S. SENG?ONGO '...etc

The offending characters are (unusually) lowercase in otherwise
uppercase strings; is this actual data or are you typing what you think
you see instead of copy/paste?

>
> Using the Text function, these names are not validated as they contain
> special characters or non-english characters (?,?). But the data is
> correct.

It would help a great deal if you were to tell us (1) what is the regex
that you are using (2) what encoding you believe/know the data is
written in (3) does your app call locale.setlocale() at start-up? If
the following guesses are wrong, please say so.

Guess (1) (a) you are using the pattern "[A-Za-z]" to check for
alphabetic characters (b) you are using the "\w" pattern to check for
alphanumeric characters and then using "[\d_]" to reject digits and
underscores.
Guess (2): "cp1252" or "latin1" or "unknown" -- all pretty much
equivalent :-)
Guess (3): No.

If guess (1b) is correct: the so-called "special" characters are not
being interpreted as alphabetic because the re module is
locale-dependent. Here is what the re docs have to say:
"""
\w
When the LOCALE and UNICODE flags are not specified, matches any
alphanumeric character and the underscore; this is equivalent to the
set [a-zA-Z0-9_]. With LOCALE, it will match the set [0-9_] plus
whatever characters are defined as alphanumeric for the current locale.
If UNICODE is set, this will match the characters [0-9_] plus whatever
is classified as alphanumeric in the Unicode character properties
database.
"""

If you are not using (1b) or something like it, you need to move in
that direction.

Please bear this in mind: the locale is meant to be an
attribute/property of the *user* of your application; it is *not* meant
to be an attribute of the input data. Read the docs of the locale
module -- switching locales on the fly is *not* a good idea.

> Is there any function that can allow such special character's but not
> numbers...?

The righteous way of handling your problem is:
(1) decode each field in the incoming 8-bit string data to Unicode,
using what you know/guess to be the correct encoding setting. Then
string methods like isalpha() and isdigit() will use the Unicode
character properties and your "special" characters will be recognised
for what they are.
(2) use the UNICODE flag in re.

>
> Secondly, If I were to get the data in Russian text,
> are there any
> (lingual) packages available so that i can use the the same module for
> validation.

If you are getting the data as 8-bit strings, then the above approach
should still "work" at the basic level ... you decode it using 'cp1251'
or whatever, and the Cyrillic letter equivalents of "Ivanov" would pass
muster as alphabetic.

> Such that I just have to import the package and the module can be used
> for validating russian text or japanese text....

Chinese, Japanese and Korean ("CJK") names are written natively in
characters that are not alphabetic in the linguistic sense. The number
of characters that could possibly be written in a name is rather large.
However the CJK characters are classified as Unicode category "Lo"
(Letter, other) and do actually match \w in re.

So with a minimal amount of work, you can provide a basic level of
validation across the board. Anything fancier needs local knowledge
[not a c.l.py topic].

Some points for consideration:
(1) You may wish not to reject digits irrevocably -- some jurisdictions
do permit people to change their legal name to "4567" or whatever.
(2) You are of course allowing space, hyphen and apostrophe as valid
characters in "English" names e.g. "mac Intyre", "O'Brien-Smith". Bear
in mind that other punctuation characters may be valid in other
languages -- see 'local knowledge" above.
(3) If you are given data encoded as utf16* or utf32, you won't be able
to use the csv module (neither the ObjectCraft one nor the Python one
(read the docs)) directly. You will need to recode the file as UTF8,
read it using the csv module, and *then* decode each text field from
utf8.

HTH,
John



From kyosuke at seznam.cz  Fri Sep 15 15:00:59 2006
From: kyosuke at seznam.cz (Jakub Hegenbart)
Date: Fri, 15 Sep 2006 21:00:59 +0200
Subject: fail to indent in inner loop
In-Reply-To: <1158334122.796811.216280@b28g2000cwb.googlegroups.com>
References: <1158334122.796811.216280@b28g2000cwb.googlegroups.com>
Message-ID: <eeetb7$1i1f$1@ns.felk.cvut.cz>

perltcl at yahoo.com wrote:
> hi
> 
> I've started learning python. I was typing from a tutorial,
> and I fail to indent on an inner loop.
> I got an error and all my previous typed lines are gone.
> is there a way to prevent this.
> i don't mind editing the last line, but to lose all the previous lines
> are too much.
> (since it has history function like bash.)
> 

Try using PyCrust. Using PyCrust is very instructive (for example, you 
can see the namespace tree) and Alt+P history returns the whole previous 
block of code.

Jakub


From george.sakkis at gmail.com  Tue Sep 26 22:12:34 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 19:12:34 -0700
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
	<efa864$rbf$1@lust.ihug.co.nz>
	<1159285039.913453.194150@h48g2000cwc.googlegroups.com>
	<efcheo$2cc$4@lust.ihug.co.nz>
Message-ID: <1159323154.393491.185120@m73g2000cwd.googlegroups.com>

Lawrence D'Oliveiro wrote:

> In message <1159285039.913453.194150 at h48g2000cwc.googlegroups.com>, George
> Sakkis wrote:
>
> > Lawrence D'Oliveiro wrote:
> >
> >> Fredrik Lundh wrote:
> >> > you're not the designer...
> >>
> >> I don't have to be. Whoever the designer was, they had not properly
> >> thought through the uses of this function. That's quite obvious already,
> >> to anybody who works with HTML a lot. So the function is broken and needs
> >> to be fixed.
> >>
> >> If you're worried about changing the semantics of a function that keeps
> >> the same "cgi.escape" name, then fine. We delete the existing function
> >> and add a new, properly-designed one. _That_ will be a wake-up call to
> >> all the users of the existing function to fix their code.
> >
> > Wow. Are you always that arrogant for things you know very little
> > about, or just plain stupid ?
>
> Wow. Express an opinion, and get called names by trolls.

Funny, "troll" was my initial thought after reading your first few
posts. As you went on and on though, exposing your smugness and failure
to grasp rocket-science concepts such as "backwards compatibility", I
expressed my opinion by dismissing "troll" for a more fit description
of you.



From ilias at lazaridis.com  Wed Sep 20 13:48:07 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 20 Sep 2006 10:48:07 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158693703.018937.284690@m73g2000cwd.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<1158693703.018937.284690@m73g2000cwd.googlegroups.com>
Message-ID: <1158774487.740296.163740@k70g2000cwa.googlegroups.com>

George Sakkis wrote:
> Ilias Lazaridis wrote:
>
> > I like to add a method "writeDebug(self, msg)" to all (or the most
> > possible) classes in the system.
> >
> > How do I do this?
> >
> > * with new style classes
> > * with old style classes
>
> Short answer: you can't do it for builtin or extension types:
> >>> list.writeDebug = lambda msg: "You'd wish"
> ...
> TypeError: can't set attributes of built-in/extension type 'list'
>
> Longer asnwer: Make it a function instead of a method. This function
> could try to call the respective method, and as a fallback it would
> have hardcoded what to do for each supported class, something like:
>
> def writeDebug(obj, msg):
>     try: return obj.writeDebug(msg)
>     except AttributeError:
>         if isinstance(obj,list):
>             # list msg
>         elif isinstance(obj,tuple):
>             # tuple msg
>         ...
>         else:
>             # default object msg
>
> If you insist though that you'd rather not use functions but only
> methods, tough luck; you're better off with Ruby.

I insist on methods, and It seems that I stay with Python.

The effort for me to rework python to become more OO is much lesser,
than the effort I would have to rework Ruby to become more (this and
that).

http://case.lazaridis.com/wiki/Lang

And I've already started to like 2 things on python:

* the missing "end" statement and
* (I don't believe I write this) enforced indentation.

.



From johnjsal at NOSPAMgmail.com  Thu Sep 28 10:03:10 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 14:03:10 GMT
Subject: sqlite3 error
In-Reply-To: <1159394058.945948.119410@h48g2000cwc.googlegroups.com>
References: <JnzSg.36$1n3.471@news.tufts.edu>
	<1159394058.945948.119410@h48g2000cwc.googlegroups.com>
Message-ID: <yCQSg.41$1n3.351@news.tufts.edu>

John Machin wrote:
> John Salerno wrote:
>> CREATE TABLE Researchers (
>>      researcherID varchar(9) PRIMARY KEY NOT NULL,
>>      birthYear int(4) DEFAULT NULL,
>>      birthMonth int(2) DEFAULT NULL,
>>      birthDay int(2) DEFAULT NULL,
>>      birthCountry varchar(50) DEFAULT NULL,
>>      birthState char(2) DEFAULT NULL,
>>      birthCity varchar(50) DEFAULT NULL,
>>      nameFirst varchar(50) NOT NULL,
>>      nameLast varchar(50) NOT NULL,
>>      nameGiven varchar(255) DEFAULT NULL,
> 
> A bit OT, but one answer to the "can you make a living with just
> Python" question is "Yup, tool of choice for rummaging in and fixing
> data that's been mangled by users cramming it into dodgy data models"
> :-)
> 
> (1) Consider that some countries have states/provinces with 3-letter
> abbreviations (e.g. Australia) or no abbreviation than I'm aware of in
> a Latin alphabet (e.g. China).

Good point. I guess since this program is for my own use, I just figured 
I could stick with the American style abbreviation. But it's not as if I 
actually considered that this wouldn't always work, so it's good to be 
aware of the issue.

> (2) It's not apparent how you would use the first, last, and given
> names columns, especially with two of them being "not null". Consider
> how you would store e.g.:
> J Edgar Hoover
> DJ Delorie
> Sukarno
> 35
> Maggie Cheung Man-Yuk
> Molnar Janos
> Fatimah binte Rahman
> Zhang Manyu

Not sure I follow you on some of these examples. In the case of J Edgar 
Hoover, I would just put the full name for his first name, or if "J" is 
entered, then just that, I suppose. Given name will be first name + 
middle name(s). (I took most of this schema from a baseball database, so 
maybe it's just something that worked better there.)


From sanzhiyan at gmail.com  Fri Sep 22 10:08:20 2006
From: sanzhiyan at gmail.com (Saizan)
Date: 22 Sep 2006 07:08:20 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
Message-ID: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>

Why subclassing bool from int either __invert__ or __neg__ haven't been
overrided to produce a boolean negation? I suspect backwards
compatibility or something alike, but I still wonder..

And since bool can't be subclassed, to have a type like bool but with
boolean negation what do you suggest? A wrapper maybe?


(I would use it so I can evaluate user-defined boolean expression
creating istances of his/her variables in my namespace and than eval()
his/her expression)



From gagsl-py at yahoo.com.ar  Tue Sep 26 17:05:53 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 18:05:53 -0300
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <7.0.1.0.0.20060926174828.040fb578@yahoo.com.ar>

At Tuesday 26/9/2006 16:38, John Salerno wrote:

>It's a nice thought that a person can earn a living programming with
>Python, which is fun enough to use just for its own sake. But for
>someone like me (i.e. no programming experience) it's always a little
>disheartening to see that most (if not all) job descriptions that ask
>for Python still require some C/C++ or other language knowledge. I
>suppose this isn't an issue if you studied CS in college, because you
>would have been exposed to many languages.

Sometimes it's the "one-size-fits-all" concept applied to workers: 
just one man to do all things.

>But what if you are an expert Python program and have zero clue about
>other languages? Can you still earn a living that way, or do most/all
>companies require multiple language proficiency?

I think it's difficult to be an expert Python programmer and at the 
same time know nothing about other languages.
It's a bit like "general music practice", playing other instruments 
other than your main one may help a lot.

>(I suppose this isn't exactly a Python problem, either. I'm sure even
>companies that don't use Python still use multiple languages. Maybe it
>isn't a good idea to focus entirely on a single language, depending on
>the job at hand.)

As an example, here at work we use: mostly Python (for web 
applications) and Delphi (desktop) both for new projects; Java for 
some background data mining processes; and a bunch of 
BASIC/Pascal/FORTRAN legacy code which I wish I could throw away ...



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From joakim.hove at gmail.com  Wed Sep 20 02:50:48 2006
From: joakim.hove at gmail.com (joakim.hove at gmail.com)
Date: 19 Sep 2006 23:50:48 -0700
Subject: include statement
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
	<mailman.314.1158733422.10491.python-list@python.org>
Message-ID: <1158735048.114574.56190@e3g2000cwe.googlegroups.com>

Thanks to all who took time to answer!


> > is it possible in python to include another python source file into the
> > current namespace, i.e.completely analogous to the #include statement
> > in C.

[...]

> Tell us why you are contemplating such a thing, and someone
> here will help you implement it the "Pythonic" way.

My application has a configuration file where lots of variables are
set. (The configuration file is python source, so there is no
home-brewed parsing involved.) The configuration file is starting to
get quite large and unwieldy, so for this reason I would like to split
it in several files.

I know I could do:
from configA import *
from configB import *

But I felt that the import statemant was 'more' than I wanted. Maybe I
am just pedantic.

Regards

Joakim



From fuzzyman at gmail.com  Sun Sep 17 13:11:27 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 17 Sep 2006 10:11:27 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <1158513087.612885.276160@h48g2000cwc.googlegroups.com>


nicolasfr at gmail.com wrote:
> Hi,
>
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
>
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
>
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.
>

There is *already* an online collaborative project for the Python
tutorial and reference :

http://pytut.infogami.com/
http://pyfaq.infogami.com/
http://pyref.infogami.com/

Please contribute to these.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml



> Regards,
> 
> Nicolas.
> -----
> http://www.pythondocs.info



From claudio.grondi at freenet.de  Wed Sep  6 16:47:14 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Wed, 06 Sep 2006 22:47:14 +0200
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <mailman.90.1157570501.5279.python-list@python.org>
References: <edmlbv$a9h$1@newsreader2.netcologne.de><8MqdneHW48EjaWPZnZ2dnUVZ_sednZ2d@comcast.com>	<edn23m$s6$1@newsreader2.netcologne.de>
	<mailman.90.1157570501.5279.python-list@python.org>
Message-ID: <ednc4f$ibl$1@newsreader2.netcologne.de>

tjreedy wrote:
> "Claudio Grondi" <claudio.grondi at freenet.de> wrote in message 
> news:edn23m$s6$1 at newsreader2.netcologne.de...
> 
>>I also erroneously assumed, that the first problem was detected during
>>parsing ... so, by the way: how can I distinguish an error raised while
>>parsing the code and an error raised when actually running the code?
> 
> 
> Parsing detects and reports syntax errors and maybe something else if you 
> use non-ascii chars without matching coding cookie.  Other errors are 
> runtime.
Let's consider
   print '"Data

 ?"'

In CPython 2.4.2 there is in case of non-ascii character:
   sys:1: DeprecationWarning: Non-ASCII character '\xea' in file 
C:\IronPython-1.0-BugsOrFeatures.py on line 3, but no encoding
declared; see http://www.python.org/peps/pep-0263.html for details
"Data?? ?"

IronPython does not raise any warning and outputs:
"Data?? ?"

So it seems, that IronPython is not that close to CPython as I have it 
expected.
It takes much more time to run this above simple script in IronPython as 
in CPython - it feels as IronPython were extremely busy with starting 
itself.

Claudio Grondi


From claudio.grondi at freenet.de  Sat Sep  2 15:12:20 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Sat, 02 Sep 2006 21:12:20 +0200
Subject: pictures as characters in a Tk text box?
In-Reply-To: <1157221912.094315.56100@e3g2000cwe.googlegroups.com>
References: <1157149401.300181.300010@e3g2000cwe.googlegroups.com>
	<1157162709.109743.63020@m79g2000cwm.googlegroups.com>
	<1157221912.094315.56100@e3g2000cwe.googlegroups.com>
Message-ID: <edcl2e$qee$1@newsreader2.netcologne.de>

Jay wrote:
> Can you do the same in wxPython?
I am a greenhorn in wxPython, so please don't bet on what I state here, 
but to my current knowledge wxPython doesn't come with a widget capable 
of what Tkinter text box is capable of. But wxPython comes e.g. with a 
widget displaying any HTML content, so if you need only to display and 
not edit things it is a perfect one to use if you need to mix text with 
images and control elements.

Claudio Grondi

> 
> Simon Forman wrote:
> 
>>Jay wrote:
>>
>>>This may be really obscure, but I had a dream about programming
>>>something like this, so don't blame me.  Is it possible to take a small
>>>image or icon and display it as a character in a Tk text box?  Think
>>>how Thunderbird displays text smilies as actual smiley icons.  Or how
>>>in AIM as you type a smiley, it replaces it with the picture.  Does
>>>anyone know how to display these specifically in a Tk text box?  Thanks.
>>
>>Dreaming in Python, eh?  Maybe you should take a break.  ;-)
>>
>>Sure, quoting the link below: "You can put an image or bitmap into a
>>text widget. It is treated as a single character whose size is the
>>natural size of the object."
>>
>>You can also embed any Tk widget in a Tk Text widget, including
>>ImageTks and widgets with bitmaps.
>>
>>See:
>>http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-image.html
>>and
>>http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-window.html
>>
>>
>>HTH,
>>~Simon
> 
> 


From lh84777 at yahoo.fr  Wed Sep  6 14:13:10 2006
From: lh84777 at yahoo.fr (lh84777 at yahoo.fr)
Date: 6 Sep 2006 11:13:10 -0700
Subject: Refactor a buffered class...
In-Reply-To: <mailman.86.1157565197.5279.python-list@python.org>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
Message-ID: <1157566390.675460.188470@e3g2000cwe.googlegroups.com>


Michael Spencer a ?crit :

> If you just need to 'walk across a list of items', then your buffer class and
> helper function seem unnecessary complex.  A generator would do the trick,
> something like:

actually for the example i have used only one sentry condition by they
are more numerous and complex, also i need to work on a huge amount on
data (each word are a line with many features readed from a file)

but generators are interesting stuff that i'm going to look closer.

thanks.



From R.Brodie at rl.ac.uk  Thu Sep  7 06:23:54 2006
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Thu, 7 Sep 2006 11:23:54 +0100
Subject: getting quick arp request
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>	<1157565629.691753.115910@e3g2000cwe.googlegroups.com><1157618579.686511.274150@b28g2000cwb.googlegroups.com>
	<mailman.114.1157623864.5279.python-list@python.org>
Message-ID: <edorvq$nv2$1@south.jnrs.ja.net>


"Steve Holden" <steve at holdenweb.com> wrote in message 
news:mailman.114.1157623864.5279.python-list at python.org...

> Is it relevant to point out that the ARP protocol is a connectionless network-layer 
> protocol.

Not really, since the program uses normal TCP socket connections.
The feature is working exactly as designed - to slow down TCP scans.
The arp requests are just a consequence of the TCP scan. 




From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 10:25:13 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 16:25:13 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
Message-ID: <slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>

Tim Chase enlightened us with:
> >>> cur.execute("select * from people where last_name in (%s)" %
> 	','.join('%s' for i in xrange(len(t))),
> 	t)

But since the value of 'i' isn't used at all, it can be abbreviated
to:

>>> cur.execute("select * from people where last_name in (%s)" %
	','.join('%s' for i in t),
	t)

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From friedmud at gmail.com  Fri Sep 22 11:13:30 2006
From: friedmud at gmail.com (friedmud at gmail.com)
Date: 22 Sep 2006 08:13:30 -0700
Subject: Anyone use PyPar (Python MPI implementation) recently?
Message-ID: <1158938010.649920.54510@e3g2000cwe.googlegroups.com>

Has anyone used PyPar ( http://datamining.anu.edu.au/~ole/pypar/ )
recently?

I _do_ want to do MPI (not BSP) but I don't need any advanced MPI
things... and PyPar seemed just up my ally... but alas it doesn't
compile:

###########
[umbriel][~/download/pypar_1_9_2]> python setup.py --prefix=$MY_PREFIX
cc: unrecognized option '-showme'
/usr/lib/gcc/i386-redhat-linux/4.1.1/../../../crt1.o: In function
`_start':
(.text+0x18): undefined reference to `main'
collect2: ld returned 1 exit status
distcc[12384] ERROR: compile (null) on localhost failed
/usr/local/mpi/1.2.5/bin/mpicc: line 297: echo: write error: Broken
pipe
/usr/local/mpi/1.2.5/bin/mpicc: line 372: echo: write error: Broken
pipe
+ for arg in '"$@"'
+ '[' 0 = 1 ']'
+ case "$arg" in
+ allargs=' -c'
+ compileargs=' -c'
+ '[' 1 = 1 -a -n '' ']'
+ DoLink=0
+ HasDashC=1
+ for arg in '"$@"'
+ '[' 0 = 1 ']'
+ case "$arg" in
+ allargs=' -c /tmp/tmpP7n2tD.c'
+ '[' -s /tmp/tmpP7n2tD.c ']'
++ expr /tmp/tmpP7n2tD.c : '.*\(\..*\)'
+ ext=.c
+ '[' .c = .c ']'
+ DoCompile=1
+ compileargs=' -c /tmp/tmpP7n2tD.c'
++ basename /tmp/tmpP7n2tD.c .c
+ fname=tmpP7n2tD
+ linkobjs=' tmpP7n2tD.o'
+ for arg in '"$@"'
+ '[' 0 = 1 ']'
+ case "$arg" in
+ allargs=' -c /tmp/tmpP7n2tD.c -o'
+ '[' 1 = 1 ']'
+ compileargs=' -c /tmp/tmpP7n2tD.c -o'
+ for arg in '"$@"'
+ '[' 0 = 1 ']'
+ case "$arg" in
+ allargs=' -c /tmp/tmpP7n2tD.c -o /tmp/tmpP7n2tD.o'
+ '[' -s /tmp/tmpP7n2tD.o ']'
++ expr /tmp/tmpP7n2tD.o : '.*\(\..*\)'
+ ext=.o
+ '[' .o = .c ']'
+ '[' .o = .s ']'
+ '[' .o = .o ']'
+ '[' 1 = 1 ']'
+ compileargs=' -c /tmp/tmpP7n2tD.c -o /tmp/tmpP7n2tD.o'
+ status=0
+ '[' 1 = 1 -o 0 = 1 ']'
+ '[' 1 '!=' 1 ']'
+ eval cc -DUSE_STDARG -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
-DHAVE_UNISTD_H=1 -DHAVE_STDARG_H=1 -DUSE_STDARG=1 -DMALLOC_RET_VOID=1
-c /tmp/tmpP7n2tD.c -o /tmp/tmpP7n2tD.o -I/usr/local/mpi/1.2.5/include
++ cc -DUSE_STDARG -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
-DHAVE_UNISTD_H=1 -DHAVE_STDARG_H=1 -DUSE_STDARG=1 -DMALLOC_RET_VOID=1
-c /tmp/tmpP7n2tD.c -o /tmp/tmpP7n2tD.o -I/usr/local/mpi/1.2.5/include
+ status=0
+ '[' 0 '!=' 0 ']'
+ '[' 0 = 1 -o 0 = 1 ']'
+ exit 0
usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
   or: setup.py --help [cmd1 cmd2 ...]
   or: setup.py --help-commands
   or: setup.py cmd --help

error: option --prefix not recognized
##########

This is on Fedora Core5.  I know that MPI and such are setup fine... as
I use them daily in a C++ code.

Thanks for any help!



From walterbyrd at iname.com  Tue Sep 26 09:04:11 2006
From: walterbyrd at iname.com (walterbyrd)
Date: 26 Sep 2006 06:04:11 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <mailman.624.1159249638.10491.python-list@python.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.610.1159227601.10491.python-list@python.org>
	<1159235326.385036.233440@i3g2000cwc.googlegroups.com>
	<mailman.624.1159249638.10491.python-list@python.org>
Message-ID: <1159275851.693196.241230@h48g2000cwc.googlegroups.com>

Fredrik Lundh wrote:
> someone just posted this
>
>  > Site          Perl      Python
>  > Hotjobs       2756       655
>  > Monster      >1000       317
>  > Dice          4828       803
>

>From what I have seen, most of listings are not for python developers.
Rather they list python as a "nice to have as an extra" skill. Same
goes for perl.

For example, sys admin jobs often list every scripting language the job
writer can think of. There seem to be very few jobs where perl, or
python, are the primary skills being sought.



From ilias at lazaridis.com  Wed Sep 20 07:54:18 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 20 Sep 2006 04:54:18 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158686571.184132.273190@h48g2000cwc.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<1158679802.962227.15200@b28g2000cwb.googlegroups.com>
	<1158683411.737232.42380@b28g2000cwb.googlegroups.com>
	<1158686571.184132.273190@h48g2000cwc.googlegroups.com>
Message-ID: <1158753258.429101.298260@h48g2000cwc.googlegroups.com>

MonkeeSage wrote:
> Ilias Lazaridis wrote:
> > where do I place this function...
>
> The place where you want it to be.
>
> > ...thus it becomes available within class "Foo" and all other Classes?
>
> Anything defined in the top-level (i.e., the sys.modules['__main__']
> namespace) is accessible in every scope...but I assume you already know
> that.

no, I don't know it.

how do I define something into the top-level namespace? I assume I
could place it into the root-package of my project, into the __init__
function.

But how do I place it within my computers python installation (the big
init)?

> You could also use a super-duper super class from which to derive all
> your other classes, and add/replace any methods you want there:
>
> class lazaridis(object):
...

I am aware of this technique.

But I want to modify existent classes, without touching their code.

> > Something like a central import?
>
> That would probably be the most logical thing to do.
>
> But again, I assume you already know all this, so why are you asking?
> Is this part of the evaluation process?

I am not evaluating Python, I've started using it:

http://case.lazaridis.com/wiki/Lang
http://dev.lazaridis.com/base

-

I've noticed some interesting code on you website:

"
class file(file):
  def reopen(self, name=None, mode='w', bufsize=None):
...

fh = file('test.txt', 'rb')
print fh # <open file 'test.txt', mode 'rb' at 0xb7c92814>
fh.reopen(mode='wb')
"
http://rightfootin.blogspot.com/2006/09/ruby-reopen.html

does this mean that I can add a method to a class in a similar way with
ruby? (by using class class-name(class-name): )

but the limitation is that I cannot do this with the python build-in
types?:

http://rightfootin.blogspot.com/2006/08/of-rocks-and-reptiles.html

.



From robert.kern at gmail.com  Tue Sep 19 14:23:00 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 19 Sep 2006 13:23:00 -0500
Subject: help with relative imports
In-Reply-To: <bgWPg.3$1n3.37@news.tufts.edu>
References: <bgWPg.3$1n3.37@news.tufts.edu>
Message-ID: <eepci1$f2c$1@sea.gmane.org>

John Salerno wrote:
> I'm reading the "What's New" section of the 2.5 docs, and I'm a little 
> confused by the last section of "Absolute and Relative Imports":
> 
> -----------------------------------------------
> For example, code in the A.B.C module can do:
> 
> from . import D                 # Imports A.B.D
> from .. import E                # Imports A.E
> from ..F import G               # Imports A.F.G
> -----------------------------------------------
> 
> Can someone explain this? It seems like information is missing. How do 
> you know where D, E, F and G are to figure this out? If all you are 
> given is A.B.C, and then someone gives you the above three examples, 
> what steps do you take to figure out what gets imported from where?

What is ambiguous about A.B.D, A.E, and A.F.G? But if you like:

A/
   B/
     C.py
     D.py
   E.py
   F/
     G.py

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From raschulmanxx at verizon.net  Tue Sep  5 23:55:18 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Wed, 06 Sep 2006 03:55:18 GMT
Subject: Unicode string handling problem
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
	<1157511027.277425.266490@h48g2000cwc.googlegroups.com>
Message-ID: <4fhsf2d2bn0vub865pdr53s7dfr8k5ao0m@4ax.com>

On 5 Sep 2006 19:50:27 -0700, "John Roth" <JohnRoth1 at jhrothjr.com>
wrote:

>> [T]he file I actually want to process is Unicode (utf-16 encoding).
>>...
>> in_file = open("c:\\pythonapps\\in-graf1.my","rU")
>>...

John Roth:
>You're not detecting the file encoding and then
>using it in the open statement. If you know this is
>utf-16le or utf-16be, you need to say so in the
>open. If you don't, then you should read it into
>a string, go through some autodetect logic, and
>then decode it with the <string>.decode(encoding)
>method.
>
>A clue: a properly formatted utf-16 or utf-32
>file MUST have a BOM as the first character.
>That's mandated in the unicode standard. If
>it doesn't have a BOM, then try ascii and
>utf-8 in that order.  The first
>one that succeeds is correct. If neither succeeds,
>you're on your own in guessing the file encoding.

Thanks for this further information. I'm now using the codec with
improved results, but am still puzzled as to how to handle the row
termination of \n\n, which is being interpreted as two rows instead of
one.


From ilias at lazaridis.com  Sun Sep 17 23:44:30 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 17 Sep 2006 20:44:30 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <450db942$0$75035$14726298@news.sunsite.dk>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
	<450db942$0$75035$14726298@news.sunsite.dk>
Message-ID: <1158551070.407614.40030@m7g2000cwm.googlegroups.com>

Damjan wrote:
> >> I understand that I can use __metaclass__ to create a class which
> >> modifies the behaviour of another class.
> >>
> >> How can I add this metaclass to *all* classes in the system?
> >>
> >> (In ruby I would alter the "Class" class)
> >
> > You'd have to set
> >
> > __metaclass__ = whatever
> >
> > at the top of each module whose classes are to get the new behavior.
>
> I think '__metaclass__ = whatever' affects only the creation of classes that
> would otherwise be old-style classes?

It seems so:

http://mail.python.org/pipermail/python-list/2003-June/166572.html

> > You can't alter classes which you don't control or create in your code.
>
> I remeber I've seen an implementation of import_with_metaclass somewhere on
> IBM's developerworks. I didn't quite undersntad it though.

http://www-128.ibm.com/developerworks/linux/library/l-pymeta.html

I am not so much interested in old-style, as is start production with
python 2.4 (possibly even with python 2.5).

.

--
http://lazaridis.com



From elpX at adsihqX.com  Sun Sep  3 23:16:51 2006
From: elpX at adsihqX.com (Dr. Pastor)
Date: Sun, 03 Sep 2006 20:16:51 -0700
Subject: Exception EOFError.
In-Reply-To: <1157329590_32385@sp6iad.superfeed.net>
References: <1157329590_32385@sp6iad.superfeed.net>
Message-ID: <1157339107_33989@sp6iad.superfeed.net>

Thank you Sir.

Dr. Pastor wrote:
> Python 2.5b3 on Windows XP.
> 
> (exception EOFError
> Raised when one of the built-in functions (input() or
> raw_input()) hits an end-of-file condition (EOF) without reading any data.)
> 
> For me, raw_input (hit enter) returns an empty string!
> (>>> x=raw_input()
> 
>  >>> x
> ''
>  >>> )
> 
> Any confirmation?
> Regards.
> 
> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet 
> News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ 
> Newsgroups
> ----= East and West-Coast Server Farms - Total Privacy via Encryption =----

----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From ptmcg at austin.rr._bogus_.com  Fri Sep 22 12:27:02 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 22 Sep 2006 16:27:02 GMT
Subject: XML parser that sorts elements?
References: <1158939240.213404.239690@m73g2000cwd.googlegroups.com>
	<_OTQg.4326$nX4.2493@tornado.texas.rr.com>
Message-ID: <q9UQg.4441$nX4.2666@tornado.texas.rr.com>

"Paul McGuire" <ptmcg at austin.rr._bogus_.com> wrote in message 
news:_OTQg.4326$nX4.2493 at tornado.texas.rr.com...
> <jmike at alum.mit.edu> wrote in message 
> news:1158939240.213404.239690 at m73g2000cwd.googlegroups.com...
<snip>
>
This is what I posted, but it's not what I typed.  I entered some very long 
lines at the console, and the newsgroup software, when wrapping the text, 
prefixed it with '>>>', not '...'.  So this looks like something that wont 
run.
>>>> doc.childNodes[0].childNodes = sorted([n for n in 
>>>> doc.childNodes[0].childNodes if n.nodeType == 
>>>> doc.ELEMENT_NODE],key=lambda n:n.nodeName)
>>>> print doc.toprettyxml()
> <?xml version="1.0" ?>
> <booga bar="2" foo="1">
>        <blah>
>                goodbye
>        </blah>
>        <well>
>                hello
>        </well>
> </booga>
>
>>>>

Here's the console session, with '...' continuation lines:

>>> xmlsrc = """<booga foo="1" bar="2">
...   <well>hello</well>
...   <blah>goodbye</blah>
... </booga>
... """
>>> import xml.dom.minidom
>>> doc = xml.dom.minidom.parseString(xmlsrc)
>>> print doc.toprettyxml()
<?xml version="1.0" ?>
<booga bar="2" foo="1">


        <well>
                hello
        </well>


        <blah>
                goodbye
        </blah>


</booga>

>>> [n.nodeName for n in doc.childNodes]
[u'booga']
>>> [n.nodeName for n in doc.childNodes[0].childNodes]
['#text', u'well', '#text', u'blah', '#text']
>>> [n.nodeName for n in doc.childNodes[0].childNodes
...    if n.nodeType == doc.ELEMENT_NODE]
[u'well', u'blah']
>>> doc.childNodes[0].childNodes = sorted(
...   doc.childNodes[0].childNodes,key=lambda n:n.nodeName)
>>> [n.nodeName for n in doc.childNodes[0].childNodes
...    if n.nodeType == doc.ELEMENT_NODE]
[u'blah', u'well']
>>> print doc.toprettyxml()
<?xml version="1.0" ?>
<booga bar="2" foo="1">






        <blah>
                goodbye
        </blah>
        <well>
                hello
        </well>
</booga>

>>> doc.childNodes[0].childNodes = sorted(
...   [n for n in doc.childNodes[0].childNodes
...     if n.nodeType==doc.ELEMENT_NODE],
...   key=lambda n:n.nodeName)
>>> print doc.toprettyxml()
<?xml version="1.0" ?>
<booga bar="2" foo="1">
        <blah>
                goodbye
        </blah>
        <well>
                hello
        </well>
</booga>

>>>





From antroy at gmail.com  Sat Sep 30 03:58:59 2006
From: antroy at gmail.com (Ant)
Date: 30 Sep 2006 00:58:59 -0700
Subject: File I/O
In-Reply-To: <1159527353.447436.107610@i42g2000cwa.googlegroups.com>
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
	<1159527353.447436.107610@i42g2000cwa.googlegroups.com>
Message-ID: <1159603138.898464.64040@k70g2000cwa.googlegroups.com>


Kirt wrote:
...
> i dont wanna parse the xml file..
>
> Just open the file as:
>
> f=open('test.xml','a')
>
> and append a line "<Body2>abc</Body2>" before  tag </Top>

The other guys are right - you should look at something like
ElementTree which makes this sort of thing pretty easy, and is robust.
But if you are sure that:

1) </Top> is going to be on its own line (rather than something like
</Body1></Top>)
2) the ending tag will *definitely* have no extraneous whitespace (e.g.
< / Top >)

then the following will probably be the simplest solution:

f=open('test.xml')
out = []
for line in f:
    if "</Top>" in line:
        out.append("<Body2>abc</Body2>")
    out.append(line")

f.close()

f_out = open("test.xml", "w")
f.write("".join(out))
f_out.close()

If you're working with XML in any sort of quantity, then look into the
available XML tools - it will be worth your time.



From raschulmanxx at verizon.net  Sat Sep  9 23:17:19 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Sun, 10 Sep 2006 03:17:19 GMT
Subject: Unicode / cx_Oracle problem
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
Message-ID: <rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>

>>  cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)
>>      VALUES (:id,:mean)""",id=id,mean=mean)
>>...
>>  "cx_Oracle.NotSupportedError: Variable_TypeByValue(): unhandled data
>> type unicode"
>> 
>> But when I try putting a codecs.BOM_UTF16_LE in various plausible
>> places, I just end up generating different errors.

Diez:
>Show us the alleged plausible places, and the different errors. 
>Otherwise it's crystal ball time again.

More usefully, let's just try to fix the code above. Here's the error
message I get:

NotSupportedError: Variable_TypeByValue(): unhandled data type unicode

Traceback (innermost last):

File "c:\pythonapps\LoadMeanToOra.py", line 1, in ?
  # LoadMeanToOra reads a UTF-16LE input file one record at a time
File "c:\pythonapps\LoadMeanToOra.py", line 23, in ?
  cursor.execute("""INSERT INTO mean (mean_id,mean_eng_txt)

What I can't figure out is whether cx_Oracle is saying it can't handle
Unicode for an Oracle nvarchar2 data type or whether it can handle the
input but that it needs to be in a specific format that I'm not
supplying.

- Richard Schulman


From wahab at chemie.uni-halle.de  Sat Sep 30 12:05:08 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Sat, 30 Sep 2006 18:05:08 +0200
Subject: builtin regular expressions?
In-Reply-To: <877izlxsiy.fsf@gmail.com>
References: <451e37a5$1@news.vo.lu>
	<87k63ly1gi.fsf@gmail.com>	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de>
	<877izlxsiy.fsf@gmail.com>
Message-ID: <efm4se$mm2$1@mlucom4.urz.uni-halle.de>

Thus spoke Jorge Godoy (on 2006-09-30 17:50):
> Mirco Wahab <wahab at chemie.uni-halle.de> writes:
> 
> I could make it shorter in Python as well.  But for a newbie that haven't seen
> the docs for strings in Python I thought the terse version would be more
> interesting. 

OK

> At least he'll see that there are methods to do what he wants already builtin
> with the language.

OK

>> sub print_message {
>>    if   (/^(track=)/ ){ print 'Your track is '   .substr($_, length $1)."\n" }
...
> If I were writing in Perl I'd not use substr like this and would write code
> similar to the one the OP posted (i.e., /^track=(.*)/).

Right, I actually tried to match your example as close as I could
get and to use only *simple* Regexes (as stated below). What one
really would do (as you probably meant above) is sth. like:

  sub print_message {
     if   (/^track="(.+?)"/ ){ print "Your track is $1\n" }
     ...

which has a "more complicated" regex that is usually
not understood easily by newbies.

>> OK, I do Perl and Python side by side and didn't reach
>> that point so far, maybe beause I read the Friedel-Book
>>  ( http://www.oreilly.com/catalog/regex2/reviews.html )
>> sometimes and actually *like* the concept of regular expressions.
> 
> I like them as well.  I just don't see the need to use them everywhere. :-) 

I like Python for its radically plain look, my
underlying feeling of Python is: "Pascal", whereas
Perl feels and tastes like "C" to me ;-)

Regards

Mirco


From maric at aristote.info  Mon Sep  4 18:26:59 2006
From: maric at aristote.info (Maric Michaud)
Date: Tue, 5 Sep 2006 00:26:59 +0200
Subject: What are super()'s semantics?
In-Reply-To: <1157401761.952353.272090@i3g2000cwc.googlegroups.com>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
	<mailman.10331.1157371523.27775.python-list@python.org>
	<1157401761.952353.272090@i3g2000cwc.googlegroups.com>
Message-ID: <200609050027.00700.maric@aristote.info>

Le lundi 04 septembre 2006 22:29, Carl Banks a ?crit?:
> BTW, __class__ is available to instances. ?(Were you thinking of
> __bases__?)

hmmm, I guess they're not the same, are they ?

but you're right, __bases__ and some others are class attributes not available 
in instances,  I wonder where is this documented and I'm not enough familiar 
with python' source code to find this.

Also this create weird  things, like a code posted on this list, which was 
very confusing  and looked to something like :

In [24]: class A(object) :
   ....:     __class__ = list
   ....:
   ....:

In [25]: A.__class__
Out[25]: <type 'type'>

In [26]: A().__class__
Out[26]: <type 'list'>

In [27]: isinstance(A(), list) # ouch !
Out[27]: True

In [29]: type(A())
Out[29]: <class '__main__.A'>

In [30]: type(A()).mro()
Out[30]: [<class '__main__.A'>, <type 'object'>]


-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From danielmarkhot at gmail.com  Mon Sep 25 13:39:56 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 25 Sep 2006 10:39:56 -0700
Subject: How to save High Quality JPG image by setting Image module from PIL
Message-ID: <1159205996.143731.243780@e3g2000cwe.googlegroups.com>

hello all:

I am using Image module from PIL to save created image as JPG format.

Is there any option I could set for function Image.save so that the
stored image will have the highest quality.



Thank you
-Daniel



From johnjsal at NOSPAMgmail.com  Fri Sep 29 10:00:25 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 14:00:25 GMT
Subject: Pysqlite tables in RAM
In-Reply-To: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
References: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
Message-ID: <ZF9Tg.53$1n3.502@news.tufts.edu>

Ranjitha wrote:
> Hi all,
> 
> I'm relatively new to python and am facing a problem with database
> access
> 
> I want to store my data in a database on the disk. I also want to be
> able to reload the tables into the RAM whenever I have a lot of disk
> accesses and commit the changes back to the database. There is an
> option of storing the data in the RAM where you connect to :memory:
> instead of a DB file. The problem with this is that the data is lost
> everytime you close the connection to the database. Could somebody
> suggest a way to load the tables into the RAM as tables and not as some
> lists or dictionaries?
> 
> Thanks,
> Simba
> 

Just a side note: judging from your subject line, are you using the 
pysqlite extension? In case you are, SQLite support comes with the 
standard library in 2.5 as sqlite3, in case you want to switch.


From bearophileHUGS at lycos.com  Tue Sep  5 19:51:49 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 5 Sep 2006 16:51:49 -0700
Subject: Removing from a List in Place
In-Reply-To: <mailman.48.1157497547.5279.python-list@python.org>
References: <B51587638.196.5201.1@mx-extra>
	<9afea2ac0609051407v6efae334p8c8fad743f697132@mail.gmail.com>
	<9afea2ac0609051409q6a083503sc2003669d0885c3f@mail.gmail.com>
	<G51595154.188.5082.1@mx-extra>
	<mailman.48.1157497547.5279.python-list@python.org>
Message-ID: <1157500309.456462.277430@h48g2000cwc.googlegroups.com>

Tim Williams:
> You could also use a list comprehension for your case
> >>> alist = [1 ,2 ,3]
> >>> alist = [x for x in alist if x != 2]
> >>> alist
> [1, 3]

The list comprehension filtering is the simpler and often the best
solution. For memory-conscious people this is another possible
(un-pythonic) solution, usable in less dynamic languages too (not much
tested), expecially if the good elements are few (Psyco may help too).
I haven't tested its speed, but in Python it may be slower than the
simpler comprehension filtering solution:

array = [1,2,3,1,5,1,6,0]
good = lambda x: x > 2
slow = 0
for fast, item in enumerate(array):
    print item,
    if good(item):
        if slow != fast:
            array[slow] = array[fast]
        slow += 1
print "\n", array
del array[slow:]
print array

Output:
1 2 3 1 5 1 6 0
[3, 5, 6, 1, 5, 1, 6, 0]
[3, 5, 6]

Bye,
bearophile



From deets at nospam.web.de  Tue Sep 19 10:34:14 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 16:34:14 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
Message-ID: <4nadf6F9bgmuU1@uni-berlin.de>

Ilias Lazaridis wrote:

> Ilias Lazaridis wrote:
>> I understand that I can use __metaclass__ to create a class which
>> modifies the behaviour of another class.
>>
>> How can I add this metaclass to *all* classes in the system?
>>
>> (In ruby I would alter the "Class" class)
> 
> I got confused from the discussion about __metaclass__.
> 
> possibly a little more practical.
> 
> I like to add a method "writeDebug(self, msg)" to all (or the most
> possible) classes in the system.
> 
> How do I do this?
> 
> * with new style classes
> * with old style classes

OMFG. For asking the question (paraphrased) "why do you want to do this",
Mr. Spealman received an

http://case.lazaridis.com/wiki/Please#OffTopicPosts

But now you do exactly that - give more details. Maybe this could teach you
the lesson that the variance of input you get here to your questions is
worth considering?

But I've got the wicked feeling that this won't happen...

Diez


From GavinCrooks at gmail.com  Sat Sep 23 21:48:14 2006
From: GavinCrooks at gmail.com (GavinCrooks at gmail.com)
Date: 23 Sep 2006 18:48:14 -0700
Subject: Extended slices and indices
In-Reply-To: <mailman.513.1159060713.10491.python-list@python.org>
References: <1159058171.518504.180420@e3g2000cwe.googlegroups.com>
	<mailman.513.1159060713.10491.python-list@python.org>
Message-ID: <1159062494.003884.75650@m7g2000cwm.googlegroups.com>


Robert Kern wrote:
> I'd say bug in the .indices() method. The meaning of [4:-1:-1] is unavoidable
> different than [::-1] since the index -1 points to the last element, not the
> imaginary element before the first element. Unfortunately, there *is* no
> concrete (start, stop, step) tuple that will emulate [::-1].

After some more experimenting, it seems that [L-1:-L-1:-1] will reverse
a sequence of length L. But slice(L-1,-L-1,-1).indices(L) gives (L-1,
-1,-1) which will not reverse the sequence. And range(L-1, -L-1, -1) is
totally off, but range(L-1,-1,-1) is correct.

Seems like a bug (or an odd feature) of extended slicing of strings and
other built in sequences.

GEC



From steve at holdenweb.com  Thu Sep  7 15:04:05 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 20:04:05 +0100
Subject: Method resolution for super(Class, obj).
In-Reply-To: <var0g2phcfvru0jtf9jjcinaettiocib05@4ax.com>
References: <49h0g2t0rni9mk4gs3o8baqgr66q1847es@4ax.com>	<1157650974.472127.47470@h48g2000cwc.googlegroups.com>
	<var0g2phcfvru0jtf9jjcinaettiocib05@4ax.com>
Message-ID: <edpqdu$1p5$1@sea.gmane.org>

ddtl wrote:
> On 7 Sep 2006 10:42:54 -0700, in comp.lang.python you wrote:
> 
> 
>>Let's examine what the mro order is for class D:
>>
>>>>>D.mro()
>>
>>[<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>,
>><class '__mai
>>n__.A'>, <type 'object'>]
>>
>>When you call d.met(), the call dispatches to the D.met() method.
>>After printing out 'D.met', you use super() to get the next class in
>>the mro order, and call that class's met method.
>>
>>As shown with the mro(), the class after D is B.  So B.met() is called.
>>Normally, we would be done.  But take a look at B's method!
>>
>>
>>>class B(A):
>>>    def met(self):
>>>        print 'B.met'
>>>        super(B,self).met()
>>
>>B.met calls super, and invokes the next met method!  So, the code does
>>exactly what you've asked it to do, and searches for the next class
>>after B in the mro list: class C.
> 
> 
> But when super(B,self).met() is invoked, isn't it supposed to look
> at MRO order of *B*, which is:
> 
> (<class '__main__.B'>, <class '__main__.A'>, <type 'object'>)
> 
No, that's the mistake people often make. An instance of type B would 
see B's MRO, but an instance of type D sees D's MRO.

> and B doesn't have any relation with C, that is: A's met() is the to
> be called as a result. In effect, what you say impies that a call to
> super() is context dependant - if super(B,self).met() is invoked as
> a result of a call to D().met(), the effect is different from the effect 
> of a call to B().met(). But a documentation of a super() doesn't mention
> anything like that (or at least I didn't find it), and it seems a 
> significant piece of information. Doesn't it imply that there should 
> be another explanation?

It's all rather better explained in the Nutshell Guide than it is in the 
Python documentation. But basically you've got it right: it's the class 
of the *instance* that determines the MRO used by super().

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From aaaWindev at gmail.com  Fri Sep 29 07:07:18 2006
From: aaaWindev at gmail.com (aaaWindev at gmail.com)
Date: 29 Sep 2006 04:07:18 -0700
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <1159528038.548533.304250@c28g2000cwb.googlegroups.com>

Hi St?phane,

st?phane bard wrote:
> hello, my boss ask me to prefer windev to python.
> I have to argue

First, no matter how good is Python, you should not desagree with your
boss.
Second, Windew is quite good and fun, you will love it.

--
PatBiker



From bearophileHUGS at lycos.com  Fri Sep  8 20:30:50 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 Sep 2006 17:30:50 -0700
Subject: Map with an extra parameter
In-Reply-To: <1157761277.421434.233500@h48g2000cwc.googlegroups.com>
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
	<1157760537.816693.243780@d34g2000cwd.googlegroups.com>
	<1157761277.421434.233500@h48g2000cwc.googlegroups.com>
Message-ID: <1157761850.196163.323930@e3g2000cwe.googlegroups.com>

ml1n wrote:
> In the interests of speed my thinking was that using map would move the
> loop out of Python and into C, is that the case when using list
> comprehension?  I'd always thought it was just syntatic short hand for
> a Python loop.

In Python the faster things are often the most simple.
You can time your code to see what's faster.
And even better you may try the simpler solution, and if the program
results too much slow with a profiling you can find the spots needing
improvements.

Bye,
bearophile



From amk at amk.ca  Tue Sep 12 08:15:24 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Tue, 12 Sep 2006 07:15:24 -0500
Subject: Clarify Regex in Python.
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
Message-ID: <3v6dnTG83MBBOZvYnZ2dnUVZ_uidnZ2d@speakeasy.net>

On 12 Sep 2006 05:07:03 -0700, 
	cooldudevamsee at gmail.com <cooldudevamsee at gmail.com> wrote:
> My Problem is, I want to know how can I force match functions to match
> the pattern any location in the subject. i.e I want to turn off before
> said behaviour.

Use search() instead; that's why the method is there.

(Or put .* at the beginning of all your patterns, though that will be
slightly slower.)

--amk


From tim at tdw.net  Thu Sep  7 18:31:18 2006
From: tim at tdw.net (Tim Williams)
Date: Thu, 7 Sep 2006 23:31:18 +0100
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <G51763063.366.8093.1@mx-extra>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<G51763063.366.8093.1@mx-extra>
Message-ID: <9afea2ac0609071531u16c4651fnc632f90691c675d4@mail.gmail.com>

On 7 Sep 2006 14:30:25 -0700, Adam Jones <ajones1 at gmail.com> wrote:
>
> Francach wrote:
> > Hi,
> >
> > I'm trying to use the Beautiful Soup package to parse through the
> > "bookmarks.html" file which Firefox exports all your bookmarks into.
> > I've been struggling with the documentation trying to figure out how to
> > extract all the urls. Has anybody got a couple of longer examples using
> > Beautiful Soup I could play around with?
> >
> > Thanks,
> > Martin.
>
> If the only thing you want out of the document is the URL's why not
> search for: href="..." ? You could get a regular expression that
> matches that pretty easily. I think this should just about get you
> there, but my regular expressions have gotten very rusty.
>
> /href=\".+\"/
>

I doubt the bookmarks file is huge so something simple like

f = open('bookmarks.html').readlines()
data = [x for x in f if x.strip().startswith('<DT><A ')]

would get you started.

On my exported firefox bookmarks, this gives me all the urls,  they
just need to be parsed a bit more accurately,   I might be tempted to
just use a couple of splits() to keep it real simple.

HTH


-- 

Tim Williams


From pavlovevidence at gmail.com  Sat Sep 30 12:39:15 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 30 Sep 2006 09:39:15 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
Message-ID: <1159634355.148772.59510@i3g2000cwc.googlegroups.com>

metaperl.etc at gmail.com wrote:
> I'm wondering if anyone has ever found a practical use for the else
> branch?

Say you have code that looks like this:

if command.startswith("set"):
    do_set_action(command)
elif command.startswith("input"):
    do_input_action(command)
elif command.startswith("print"):
    do_print_action()
else:
    do_general_action()

Now, during refactoring, we note that there's a lot of similarity in
all those if clauses that we can exploit to simplify the code.  Let's
ignore the final else clause for now, since it's not similar to the if
and elif clauses (it has no test).  We define a mapping of prefixes to
actions, and rewrite the if...elif as a for loop:

command_map = (
    ("set",do_set_action),
    ("input",do_input_action),
    ("print",do_print_action)
)

for keyword,action in command_map:
    if command.startswith(keyword):
        action(command)
        break

Ok, this works great.  Now let's come back to that else clause: how do
we translate default case to the for loop?  Well, I guess we could set
some sort of flag indicating we got a match....  But wait!  We don''t
have to!  We can just leave the else clause there as-is, and it'll
work.  The for loop here is quite literally a drop-in replacement for
the if...elif...elif, even going so far as to allow the same else
clause.

for keyword,action in command_list:
    if command.startswith(keyword):
        action(command)
        break
else:
    do_general_action()


Moral of the story: there are two ways to do a linear search (or linear
sequence of tests): either an unrolled sequence of if...elif...elif
clauses, or a rolled up for loop with a break.  Either way you do it,
you can tack on an else clause for when you don't find anything.


Carl Banks



From damian at nice.co.nz  Thu Sep 28 01:10:09 2006
From: damian at nice.co.nz (Damian)
Date: 27 Sep 2006 22:10:09 -0700
Subject: XSLT speed comparisons
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
	<1159400418.491887.125240@m7g2000cwm.googlegroups.com>
	<1159404746.185590.40560@e3g2000cwe.googlegroups.com>
Message-ID: <1159420209.261561.281510@h48g2000cwc.googlegroups.com>

Ross Ridge wrote:
> Hmm... it seems that you don't have MSXML 4.0 installed on your
> machine.  I missed the fact that you're using ASP.NET, so your ASP code
> probably is probably using the .NET XML implementation instead of
> MSXML.  In that case, another alternative might be to use IronPython
> and just translate your ASP script into Python.
>
>                                          Ross Ridge

Sorted!

I installed msxml4 and then struggled for an hour or so with an
encoding error (UnicodeEncodeError: 'ascii' codec.... etc) which was
fixed by altering your code from:

return proc.output --> return proc.output.encode('utf-8')

The performance of MSXML over 4suite is substantial.
4suite: http://python.pointy.co.nz/test = 2.5s
MSXML: http://python.pointy.co.nz/test_msxml = 1.1s

I'd like to eventually break all ties with MS at some stage. It'll be
interesting to test this performance on a Linux server.

Thank you for your help Ross.



From zeng at adobe.com  Wed Sep 20 20:30:45 2006
From: zeng at adobe.com (Ted Zeng)
Date: Wed, 20 Sep 2006 17:30:45 -0700
Subject: access to xml_rpc server problem
In-Reply-To: <qhfyemb5oa.fsf@ruckus.brouhaha.com>
Message-ID: <454FD769B559DD4BAC93B2CCA7BEBDBE0121CD99@namail2.corp.adobe.com>

HI,

I run a xml_rpc server like the following:(sample code from internet)

server = SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost", 8000))
server.serve_forever()

If my client is on the same machine, I use :(also from internet sample
code)

server = xmlrpclib.Server('http://localhost:8000')
print server.chop_in_half('I am a confidant guy')

This works fine.

But if I use server's ip address instead of localhost in the client,
then it could not access the server.

server = xmlrpclib.Server('http://machine_ip_address:8000')
print server.chop_in_half('I am a confidant guy')


How can my client (runs on other machine) access the server? The server
runs on a machine with dynamic IP. But my client knows the IP address.


Ted Zeng



From xavier.elattaoui at synchrotron-soleil.fr  Fri Sep 15 12:00:08 2006
From: xavier.elattaoui at synchrotron-soleil.fr (ELATTAOUI Xavier)
Date: Fri, 15 Sep 2006 18:00:08 +0200
Subject: IDLE Problem in Windows XP
Message-ID: <52F466CF51A5AB4AB3A1BF1CC381F8E463BA5D@venus.synchrotron-soleil.fr>

Hi,
 
I have encountered the same problem so you can try the following :
 
- Be sure your %PYTHONPATH% is set
- open a DOS console and type : "python C:\Python23\Lib\idlelib\idle.py"
-> this will launch the IDLE
- then choose "configure IDLE" in Options menu
- in the menu "Highlighting" on right part, choose "IDLE Classic" and apply
- close all and try to launch now the IDLE
 
This is what I have done and now it works (don't ask me why !!).
 
Hope this help,
Xavier
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From cfbolz at gmx.de  Fri Sep 29 08:33:12 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Fri, 29 Sep 2006 14:33:12 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <451CD389.3010800@jessikat.plus.net>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
Message-ID: <451D1288.9030804@gmx.de>

Robin Becker wrote:
> Larry Hastings wrote:
> ______
>> THE PATCH
>>
>> The core concept: adding two strings together no longer returns a pure
>> "string" object.  Instead, it returns a "string concatenation" object
>> which holds references to the two strings but does not actually
>> concatenate
>> them... yet.  The strings are concatenated only when someone requests
>> the
>> string's value, at which point it allocates all the space it needs and
>> renders the concatenated string all at once.
>>
>> More to the point, if you add multiple strings together (a + b + c),
>> it *doesn't* compute the intermediate strings (a + b).
>>
>> Upsides to this approach:
> ........
> 
> wouldn't this approach apply to other additions eg list+list seq+seq etc 
> etc.

no, I think it depends on strings being immutable. If you do list1 +
list2 that way and list1 is mutated then the resulting list would be
changed too.

> I suppose the utility of such an approach depends on the frequency with 
> which multiple strings/lists/sequences etc are added together in real code.

I think there are quite a lot of string additions around, it's just that
people get told to use join all the time, so they are not written using "+".

Cheers,

Carl Friedrich



From dale at riverhall.nospam.co.uk  Fri Sep 15 10:12:17 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Fri, 15 Sep 2006 15:12:17 +0100
Subject: PostgreSQL, psycopg2 and OID-less tables
Message-ID: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>

Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
a newly inserted record?

I've tried three Python client libraries, including psycopg2, and where they
support cursor attribute 'lastrowid' (Python DB API 2.0), it is always
zero. 

Anyone figured this out?

Thanks.
-- 
Dale Strickland-Clark
Riverhall Systems - www.riverhall.co.uk



From MonkeeSage at gmail.com  Fri Sep  8 20:15:42 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 8 Sep 2006 17:15:42 -0700
Subject: best split tokens?
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
	<mailman.182.1157751737.5279.python-list@python.org>
	<1157756531.475390.100210@b28g2000cwb.googlegroups.com>
Message-ID: <1157760942.270581.203490@h48g2000cwc.googlegroups.com>

John Machin wrote:
> Not picking on Tim in particular; try the following with *all*
> suggestions so far:
>
> textbox = "He was wont to be alarmed/amused by answers that won't work"

Not perfect, but would work for many cases:

s = "He was wont to be alarmed/amused by answers that won't work"
r = r'[()\[\]<>{}.,@#$%^&*?!-:;\\/_"\s\b]+'
l = filter(lambda x: not x == '', re.split(r, string))

Check out this short paper from the Natural Language Toolkit folks on
some problems / strategies for tokenization:
http://nltk.sourceforge.net/lite/doc/en/tokenize.html



From bearophileHUGS at lycos.com  Thu Sep 28 11:00:15 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 28 Sep 2006 08:00:15 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
Message-ID: <1159455615.546936.83170@m7g2000cwm.googlegroups.com>

Mirco Wahab:
> But where is the %b in Python?

Python doesn't have that. You can convert the number to a hex, and then
map the hex digitds to binary strings using a dictionary, like this:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440528

Bye,
bearophile



From istvan.albert at gmail.com  Fri Sep 29 14:44:10 2006
From: istvan.albert at gmail.com (Istvan Albert)
Date: 29 Sep 2006 11:44:10 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
Message-ID: <1159555450.721085.51710@h48g2000cwc.googlegroups.com>

metaperl wrote:

> I was shocked to see the personal insults hurled in this thread:
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b

Ahhh, no need to overreact, that's just the usual Friday night steel
cage match:

Fredrik vs "Poster Who is Convinced That The World Should Urgently
Change to Fit His Views"

If I could bet on the outcome I'd rich by  now, in lieu of that I just
sit back and enjoy the show.

i.

ps. as for the title of this post, it is ironic that you are insulting
another community while asking for no insults



From deets at nospam.web.de  Thu Sep 14 08:10:05 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 14 Sep 2006 14:10:05 +0200
Subject: Limitate speed of a socket-based data transferring
In-Reply-To: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>
References: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>
Message-ID: <4msv4tF7pm4hU1@uni-berlin.de>

billie schrieb:
> Hi all. I'm writing a TCP-based application that I will use to trasfer
> binary files through the network. This piece of code represents how do
> I get a file from a remote peer and save it on my local hard drive:
> 
> file_obj = open('downloaded.ext', 'wb')
> while 1:
>     buf = sock.recv(2048)
>     if len(buf) == 0:
>          break
>     file_obj.write(buf)
> file_obj.close()
> sock.close()
> 
> I would like to know how could be possible to limit the file transfer
> speed (for example: don't write more than 50 Kb/sec).
> Some ideas?

If you are on unix, use trickle. If you must limit it from within your 
own code, I can only assume that computing the transfer rate so far and 
introducing timeouts might help - but I never did such a thing, nor do I 
know what that means for example for the  network stack.

But maybe even then trickle may help you to get an idea, as it is a 
user-space program AFAIK. So they might have some information (at least 
the code... ) out there that could be of use.


Diez


From jjl at pobox.com  Sat Sep 16 20:48:13 2006
From: jjl at pobox.com (John J. Lee)
Date: Sun, 17 Sep 2006 00:48:13 GMT
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
	<12glelm8a37tp63@corp.supernews.com>
	<1158332322.661048.38360@b28g2000cwb.googlegroups.com>
	<mailman.144.1158345079.10491.python-list@python.org>
	<1158404125.762979.75880@h48g2000cwc.googlegroups.com>
Message-ID: <87zmczwc6p.fsf@pobox.com>

"Janto Dreijer" <jantod at gmail.com> writes:

> Steve Holden wrote:
> > Note that TCP and UDP port spaces are disjoint, so there's no way for
> > TCP and UDP to use "the same port" - they can, however, use the same
> > port number. Basically the TCP and UDP spaces have nothing to do with
> > each other.
> >
> > Most dynamic NAT gateways will respond to an outgoing UDP datagram by
> > mapping the internal client's UDP port to a UDP port on the NAT
> > gateway's external interface, and setting a converse mapping that will
> > allow the server to respond, even though technically there isn't a
> > "connection". The NAT table entries will typically be timed out after a
> > short period of non-use.
> 
> So are you saying one can't use TCP to punch a hole for UDP?

If server and client know what to do it's always possible to tunnel
anything over anything, but as Steve explained, there would be no need
for the UDP and TCP port numbers to match (and of course, tunneling
UDP over TCP is a slightly odd thing to be doing :-).


John


From crystalattice at gmail.com  Fri Sep  1 03:52:53 2006
From: crystalattice at gmail.com (crystalattice)
Date: 1 Sep 2006 00:52:53 -0700
Subject: AttributeError: 'Attributes' object has no attribute 'saveFile'
In-Reply-To: <1157073310.497557.196440@74g2000cwt.googlegroups.com>
References: <1157068216.700072.248740@m79g2000cwm.googlegroups.com>
	<1157073310.497557.196440@74g2000cwt.googlegroups.com>
Message-ID: <1157097173.671131.134060@74g2000cwt.googlegroups.com>


t.mitchell at aranz.com wrote:
> Hi
>
> Sounds like you've got a wizard-type interface thing happening.
> I haven't used wxGlade but I have done similar things in GTK several
> times.
>
> Try putting all the windows in a notebook widget with hidden tabs.
> Put the 'Next Page' button and the filename outside the notebook.  This
> makes the filename always available and the 'Next Page' button would
> just switch pages in the notebook widget.
>
> Hope this is helpful
>
> Cheers
> Tim
Sounds simple enough.  Of course, we all know the difference between
theory and practice.  I think I rember seeing a wizard-type interface
in the wxGlade tutorial.  I'll take a look at that to.  Thanks for the
tip.



From limodou at gmail.com  Sun Sep  3 21:09:40 2006
From: limodou at gmail.com (limodou)
Date: Mon, 4 Sep 2006 09:09:40 +0800
Subject: Python newbie with a problem writing files
In-Reply-To: <200693205740.885292@JJ-Tosh>
References: <200693205740.885292@JJ-Tosh>
Message-ID: <505f13c0609031809q39ba36eay7648597184291975@mail.gmail.com>

On 9/4/06, John Jones <j4jones at ptd.net> wrote:
> Hi All,
>
>     I have been driven insane by this error. I have this small program, shown below, which runs great until it gets to writing the data out to the file. I am running an install of Python 2.4. Yes, feedparser is functioning fine (I put in print feed_title statements as tests - but have since removed them). I am missing something obvious.
>
> Thanks
> JJ
>
> Code:
>
> import feedparser
> from xml.sax import saxutils
>
> feed_number=200
>
> feed_list = open("feed_listing.conf","r")
> for each_feed in feed_list:
>     data=feedparser.parse(each_feed)
>     feed_title=data.entries[0].title
>     xml_output=open("xml_data\\feed" + str(feed_number) + ".xml", "w")
>     xml_output.write = (feed_title)

Maybe there is a extra '=', if it should be:

xml_output.write(feed_title)

?

>     xml_output.close()
>     feed_number+=1
>
> Error Message:
>
> Traceback (most recent call last):
>   File "C:/My_Blogroll/JJ_Blogroll2", line 11, in ?
>     xml_output.write = (feed_title)
> AttributeError: 'file' object attribute 'write' is read-only
>

-- 
I like python!
My Blog: http://www.donews.net/limodou
UliPad Site: http://wiki.woodpecker.org.cn/moin/UliPad
UliPad Maillist: http://groups.google.com/group/ulipad


From duncan.booth at invalid.invalid  Thu Sep 21 11:09:41 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 21 Sep 2006 15:09:41 GMT
Subject: How to return an "not string' error in function?
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
Message-ID: <Xns9845A46C1381Fduncanbooth@127.0.0.1>

Tim Chase <python.list at tim.thechases.com> wrote:

> This will return true for both regular strings and for unicode 
> strings.  If that's a problem, you can use
> 
> >>> import types
> >>> isinstance("hello", types.StringType)
> True
> >>> isinstance(u"hello", types.StringType)
> False
> >>> isinstance("hello", types.UnicodeType)
> False
> >>> isinstance(u"hello", types.UnicodeType)
> True
> 
> ...or, if you don't want to qualify them with "types." each time, 
> you can use
> 
> >>> from types import StringType, UnicodeType
> 
> to bring them into the local namespace.

They already are in the builtin namespace under their more usual names of 
str and unicode respectively, so there is no need to import them, just use 
them:

>>> isinstance("hello", str)
True

... etc ...


From mensanator at aol.com  Tue Sep 12 15:28:21 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 12:28:21 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<mailman.377.1158082452.5279.python-list@python.org>
	<1158083866.689838.150070@p79g2000cwp.googlegroups.com>
	<mailman.384.1158087083.5279.python-list@python.org>
Message-ID: <1158089301.155482.151530@i42g2000cwa.googlegroups.com>

Fredrik Lundh wrote:
> mensanator at aol.com wrote:
>
> > Because I can extrapolate. I *know* before even trying it that
> > if I export all my data from a sqlite db to a csv file and then try
> > to import it into Access that there will be problems if the fields
> > aren't static typed.
>
> that's just the old "C++/Java is better than Smalltalk/Python/Ruby"
> crap.  we've seen it before, and it's no more true when it comes from
> you than when it comes from some Java head.  people who've actually used
> dynamic typing knows that it doesn't mean that all objects have random
> types all the time.

No, it isn't the same old crap. When I define an Access field as
Double, I cannot insert a value such as ">200" or "ND" or "Yes".
I'm not saying static typing is better, just that migrating a dynamic
types to static types may cause difficulties that wouldn't be present
if it was static to static.

And if you call the "C++/Java is better than Smalltalk/Python/Ruby"
statement crap, why do you accept the statement that
"static typing is a bug in the SQL specification"? Isn't that
crap also?

>
> > That's one of the reasons why I was such a good test engineer.
> > I could anticipate problems the design engineers didn't think of
> > and I would deliberately provoke those problems during testing
> > and crash their hardware/software.
> >
> > I wasn't very popular.
>
> no wonder, if you kept running around telling your colleagues that they
> were liars and crackpots and slanderers when things didn't work as you
> expected.

Nobody cared about that. What they cared about was my
reporting to their boss that the latest version of the software
was no better than the previous version who then had to figure
out how to explain to the customer that the improvement he
was promised didn't materialize and who then had to explain
to his boss why the customer still hadn't signed off on the
delivery and pay the bill.

> what's your current line of work, btw?

Database manager for an a geotechnical consulting firm doing
environmental remediation.

> 
> </F>



From tjreedy at udel.edu  Wed Sep  6 15:20:30 2006
From: tjreedy at udel.edu (tjreedy)
Date: Wed, 6 Sep 2006 21:20:30 +0200
Subject: IronPython 1.0 - Bugs or Features?
References: <edmlbv$a9h$1@newsreader2.netcologne.de><8MqdneHW48EjaWPZnZ2dnUVZ_sednZ2d@comcast.com>
	<edn23m$s6$1@newsreader2.netcologne.de>
Message-ID: <edn725$jhk$1@sea.gmane.org>


"Claudio Grondi" <claudio.grondi at freenet.de> wrote in message 
news:edn23m$s6$1 at newsreader2.netcologne.de...
> I also erroneously assumed, that the first problem was detected during
> parsing ... so, by the way: how can I distinguish an error raised while
> parsing the code and an error raised when actually running the code?

Parsing detects and reports syntax errors and maybe something else if you 
use non-ascii chars without matching coding cookie.  Other errors are 
runtime.

tjr





From jaysherby at gmail.com  Sat Sep  2 12:02:30 2006
From: jaysherby at gmail.com (Jay)
Date: 2 Sep 2006 09:02:30 -0700
Subject: pictures as characters in a Tk text box?
In-Reply-To: <1157162709.109743.63020@m79g2000cwm.googlegroups.com>
References: <1157149401.300181.300010@e3g2000cwe.googlegroups.com>
	<1157162709.109743.63020@m79g2000cwm.googlegroups.com>
Message-ID: <1157212950.481755.227730@b28g2000cwb.googlegroups.com>

PERFECT!!!  Thanks so much!


Simon Forman wrote:
> Jay wrote:
> > This may be really obscure, but I had a dream about programming
> > something like this, so don't blame me.  Is it possible to take a small
> > image or icon and display it as a character in a Tk text box?  Think
> > how Thunderbird displays text smilies as actual smiley icons.  Or how
> > in AIM as you type a smiley, it replaces it with the picture.  Does
> > anyone know how to display these specifically in a Tk text box?  Thanks.
>
> Dreaming in Python, eh?  Maybe you should take a break.  ;-)
>
> Sure, quoting the link below: "You can put an image or bitmap into a
> text widget. It is treated as a single character whose size is the
> natural size of the object."
>
> You can also embed any Tk widget in a Tk Text widget, including
> ImageTks and widgets with bitmaps.
>
> See:
> http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-image.html
> and
> http://infohost.nmt.edu/tcc/help/pubs/tkinter/text-window.html
> 
> 
> HTH,
> ~Simon



From jaysherby at gmail.com  Fri Sep 22 13:01:23 2006
From: jaysherby at gmail.com (Jay)
Date: 22 Sep 2006 10:01:23 -0700
Subject: noob question
In-Reply-To: <1158929155.890221.107680@i3g2000cwc.googlegroups.com>
References: <1158929155.890221.107680@i3g2000cwc.googlegroups.com>
Message-ID: <1158944483.383556.53420@d34g2000cwd.googlegroups.com>

http://code.google.com/hosting/

xandeer wrote:
> where is a good open-source project website?
> thank-you
> (sorry for being so annoying)(if I'm annoying)(if not then I'm not
> sorry)



From olive at apaloseco.com  Wed Sep  6 05:24:03 2006
From: olive at apaloseco.com (olive)
Date: 6 Sep 2006 02:24:03 -0700
Subject: OpenOffice.org and Python
In-Reply-To: <slrneft2is.cqd.sybrenUSE@schuimige.stuvel.eu>
References: <slrnefrv2p.9pc.sybrenUSE@schuimige.stuvel.eu>
	<mn.31bd7d694f278d16.46195@XX.XmclaveauX.com>
	<slrneft2is.cqd.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1157534643.495840.112110@h48g2000cwc.googlegroups.com>


Sybren,

you did not understand Michel question because Ubuntu seems to be the
only distribution coming with OpenOffice and Python 2.4 compiled
together.

Others platform such as Windoze are limitated to Python 2.3 when
working with OpenOffice and compiling is a pain especially under
Windoze.

Olivier.



From pavlovevidence at gmail.com  Sun Sep 10 23:02:16 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 10 Sep 2006 20:02:16 -0700
Subject: Refactoring Dilemma
In-Reply-To: <1157938079.739333.20890@d34g2000cwd.googlegroups.com>
References: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>
	<1157928606.110323.123080@i3g2000cwc.googlegroups.com>
	<1157938079.739333.20890@d34g2000cwd.googlegroups.com>
Message-ID: <1157943736.823308.204870@m73g2000cwd.googlegroups.com>

George Sakkis wrote:
> I prefer the the simple global statements if they aren't
> that many, otherwise the assignment of the module to self is also fine.

I replied to this article, and then canceled the reply (but that never
works), thinking you were criticizing the general concept of "module as
a singleton" and not just my approach.  I should learn to read.  I
apologize for the misunderstanding.

I do agree my implementation is a little hacky, although IMHO it feels
to fit in with the way classes work better, which appeals to me but
probably not most people :).  For one thing, the methods have the
explicit self argument, like regular classes.  For another, it uses a
decorator to affect the binding of the modules.  In regular classes,
functions are instance methods by default, and become class methods or
static methods with a decorator.  I like to think of modules as having
a special metaclass that treats functions as static methods by default,
and uses a decorator to get an instance method.  (Even though that
isn't remotely how it works, it fits how it would work if you were
implementing modules based on classes.)

Having said that, I've no problem with Kamilche's approach.  The real
evil in my mind is using lots of global statements, and anything you
can do to stay away from that is a good thing.


Carl Banks



From yakumo9275 at gmail.com  Thu Sep 14 11:51:34 2006
From: yakumo9275 at gmail.com (stu)
Date: 14 Sep 2006 08:51:34 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.92.1158241915.10491.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
	<mailman.92.1158241915.10491.python-list@python.org>
Message-ID: <1158249094.605954.93330@m73g2000cwd.googlegroups.com>


Dick Moores wrote:
> I'm trying out jEdit and UliPad. I got UliPad going right away and
> I'm very pleased with it, but could I jump in here with a basic jEdit
> question? How do you run a script?
>
> And one more. On the menus, the font is clear and large, but the
> equivalent key combinations are written so small they are very
> difficult for me to read. Is there a way to configure them to be
> slightly larger? (I'd ask on the jEdit support forum, but it doesn't
> seem to be very active.)
>

to change jedits fonts, under utilities menu choose global options

select appearance, this has font options for menus + other fields
text area has the editing text font (I use dialogeinput for menus and
such and
andale mono for the text area...)

to run a script.. you can 'dock' jython in the sides of the editor or
bottom, and import from the buffer or load it.. or fire jython up from
the plugin menu

there is also a colour scheme plugin that gives you colour defaults if
you want it to look lke emacs or jbuilder or idea etc etc etc

jedit is pretty rich with its plugins.

-stu



From jaysherby at gmail.com  Thu Sep 14 00:03:35 2006
From: jaysherby at gmail.com (Jay)
Date: 13 Sep 2006 21:03:35 -0700
Subject: time-based point system
In-Reply-To: <HM6dnUgt9fG0TJXYnZ2dnUVZ_uydnZ2d@speakeasy.net>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
	<1158205582.339882.23000@i3g2000cwc.googlegroups.com>
	<HM6dnUgt9fG0TJXYnZ2dnUVZ_uydnZ2d@speakeasy.net>
Message-ID: <1158206615.529997.195940@i42g2000cwa.googlegroups.com>

That function is absolutely no good for this situation.

1. Take a small number.
5.4348809719085693

2. Put it in the function.
f(5.4348809719085693) = 1/5.4348809719085693

3. Get a large number???
0.18399666987533483

That number is even smaller.  I want a large one coming out.

Erik Max Francis wrote:
> Jay wrote:
>
> > Okay, this is a game.  So the points are abstract.  It's like an arcade
> > game in respect to the points.  They don't actually mean or represent
> > anything.  The only point is to get a high score.  The idea is that the
> > faster the user acts (or reacts) the greater amount of points they'll
> > receive.  Simplified, I need a fuction or statement that takes in a
> > small number and spits out a big number.  The smaller the input, the
> > larger the output.
>
> There are any number of functions which fit this property, like f(x) =
> 1/x.  You'll have to define more clearly what properties of this
> negative function you want to narrow it down beyond that.
>
> --
> Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
>   San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
>    Get married, but never to a man who is home all day.
>     -- George Bernard Shaw



From nomail at nixmail.com  Wed Sep 27 08:53:10 2006
From: nomail at nixmail.com (DarkBlue)
Date: Wed, 27 Sep 2006 20:53:10 +0800
Subject: baffling sql string
References: <451a6cc4@127.0.0.1> <Xns984B8A202CE4Cduncanbooth@127.0.0.1>
Message-ID: <451a7436@127.0.0.1>

Duncan Booth wrote:
> ...
> 
> depending on your actual database you might need to use something other
> than %s to specify the parameters. Check out 'paramstyle' for your
> database connection.


Thank you all for prompt suggestions

I am using firebird 1.5.3 with kinterbasdb

Db


From http  Wed Sep 20 08:12:38 2006
From: http (Paul Rubin)
Date: 20 Sep 2006 05:12:38 -0700
Subject: How to measure memory footprint of Python objects?
References: <mailman.327.1158753978.10491.python-list@python.org>
Message-ID: <7xu032ag95.fsf@ruckus.brouhaha.com>

"Neagu, Adrian" <Adrian.Neagu at nuance.com> writes:
> I would like to get that size at different given moments in time to make up
> a timeline of memory consumption. But, if that is too tricky, I would be
> happy to just get the maximum.
> 
> Any suggestion welcome,

See the docs for the gc module.


From ironfroggy at gmail.com  Sun Sep 17 23:58:09 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Sun, 17 Sep 2006 23:58:09 -0400
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <75GdnRSl_tvnI5DYnZ2dnUVZ_qCdnZ2d@speakeasy.net>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
	<1158507849.378435.47080@d34g2000cwd.googlegroups.com>
	<mailman.207.1158509454.10491.python-list@python.org>
	<75GdnRSl_tvnI5DYnZ2dnUVZ_qCdnZ2d@speakeasy.net>
Message-ID: <76fd5acf0609172058g2d23c860t2a5cca940004e4ad@mail.gmail.com>

On 9/17/06, A.M. Kuchling <amk at amk.ca> wrote:
> On Sun, 17 Sep 2006 18:10:51 +0200,
>         Daniel Nogradi <nogradi at gmail.com> wrote:
> > start a new one. What would be very useful though is more visible
> > links on the python.org site to the activestate repository where
> > appropriate. I'm not sure the pyhon.org people would want to promote
> > activestate though, nevertheless it would be a great help to many.
>
> There's no reason not to link to ActiveState... but are there RSS
> feeds or some similar mechanism to get all the recipes for a
> particular module?
>
> Fredrik Lundh also proposed a way to publish examples that get linked
> from the documentation <http://effbot.org/zone/idea-seealso.htm>, and
> there's some code in the Python sandbox for incorporating links
> (sandbox/seealso).
>
> However, this code isn't used at the moment because I have no idea
> what to do about version controlling the links.  Do we just use the
> current links whenever the HTML is generated?  Make a copy of the list
> and commit them into SVN, so the links cease to be updated but are
> consistent for a given version's docs?  It would be nice to figure out
> what to do.
>
> --amk

I think that, clearly, a combination of community and automation to
gather the best information from around the tubes is a good thing to
be explored further. However, without careful editing and eventual
integration into the official documentation, the information will just
stagnate under the rug.

Beyond just getting more information into the documentation, which
already covers everything if you know where to look, we need to
seriously take a look at how newcomers are thinking about the problems
they have and where they expect to find the answers. Perhaps some
rearranging of the documentation is in order, or some cross-references
to be added. These aspiring pythoners are asking "How do I do X?" and
there is no clear path to many of their answers without knowing the
answer yourself. That is the problem, more than any lack of examples
or clarity in the text.

How can we solve this? We need a two fold approach to improving the
documentation. We need to increase community support of the official
documentation, perhaps with forums/wikis attached to different parts
of the documentation for the dropping of examples, links, and
suggestions, along with discussion on how to further improve them. Add
a form (built into the wiki?) right there with the docs where people
can submit additions, corrections, expansions, and other changes to
request.


From johnjsal at NOSPAMgmail.com  Tue Sep 19 14:52:48 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 18:52:48 GMT
Subject: new string method in 2.5 (partition)
Message-ID: <40XPg.6$1n3.149@news.tufts.edu>

Forgive my excitement, especially if you are already aware of this, but 
this seems like the kind of feature that is easily overlooked (yet could 
be very useful):


Both 8-bit and Unicode strings have new partition(sep) and 
rpartition(sep) methods that simplify a common use case.
The find(S) method is often used to get an index which is then used to 
slice the string and obtain the pieces that are before and after the 
separator. partition(sep) condenses this pattern into a single method 
call that returns a 3-tuple containing the substring before the 
separator, the separator itself, and the substring after the separator. 
If the separator isn't found, the first element of the tuple is the 
entire string and the other two elements are empty. rpartition(sep) also 
returns a 3-tuple but starts searching from the end of the string; the 
"r" stands for 'reverse'.

Some examples:


 >>> ('http://www.python.org').partition('://')
('http', '://', 'www.python.org')
 >>> ('file:/usr/share/doc/index.html').partition('://')
('file:/usr/share/doc/index.html', '', '')
 >>> (u'Subject: a quick question').partition(':')
(u'Subject', u':', u' a quick question')
 >>> 'www.python.org'.rpartition('.')
('www.python', '.', 'org')
 >>> 'www.python.org'.rpartition(':')
('', '', 'www.python.org')

(Implemented by Fredrik Lundh following a suggestion by Raymond Hettinger.)


From ldo at geek-central.gen.new_zealand  Thu Sep 28 19:52:26 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 11:52:26 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
Message-ID: <efhn5v$fia$2@lust.ihug.co.nz>

In message <efc5b3$can$1 at lust.ihug.co.nz>, I wrote:

>     def EscapeSQLWild(Str) :
>         """escapes MySQL pattern wildcards in Str."""
>         Result = []
>         for Ch in str(Str) :
>             if Ch == "%" or Ch == "_" :
>                 Result.append("\\")
>             #end if
>             Result.append(Ch)
>         #end for
>         return "".join(Result)
>     #end EscapeSQLWild

Correction, backslashes need to be escaped at this level as well. So that
should become

     def EscapeSQLWild(Str) :
         """escapes MySQL pattern wildcards in Str."""
         Result = []
         for Ch in str(Str) :
             if Ch == "\\" or Ch == "%" or Ch == "_" :
                 Result.append("\\")
             #end if
             Result.append(Ch)
         #end for
         return "".join(Result)
     #end EscapeSQLWild



From g.brandl-nospam at gmx.net  Sun Sep  3 04:02:53 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 03 Sep 2006 10:02:53 +0200
Subject: CONSTRUCT -
In-Reply-To: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
Message-ID: <ede27d$pi9$1@news.albasani.net>

lazaridis_com wrote:
> I would like to fulfill the following task:
> 
> The construct:
> 
> if __name__ == '__main__':
> 
> should be changed to something like:
> 
> if identifier.name == '__main__':
> 
> The term "identifier" should be selected based on the meaning of the
> __double-underscore-enclosure__ of the entities.
> 
> -
> 
> What I would need to know is:
> 
> a) what would be the correct term for "identifier"?

import sys
class _identifier:
    def __getattr__(self, name):
        return sys._getframe(1).f_globals['__%s__' % name]
identifier = _identifier()

Georg


From fuzzyman at gmail.com  Tue Sep 26 18:14:34 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 26 Sep 2006 15:14:34 -0700
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <efc590$2h08$1@talisker.lacave.net>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
Message-ID: <1159308874.018856.87090@i42g2000cwa.googlegroups.com>


Amaury Forgeot d'Arc wrote:
> metaperl.etc at gmail.com a ?crit :
> > A very old thread:
> > http://groups.google.com/group/comp.lang.python/browse_frm/thread/2c5022e2b7f05525/1542d2041257c47e?lnk=gst&q=for+else&rnum=9#1542d2041257c47e
> >
> > discusses the optional "else:" clause of the for statement.
> >
> > I'm wondering if anyone has ever found a practical use for the else
> > branch?
> >
>
> I use it regularly in contructs like:
>
>      for value in someList:
>          if someCondition(value):
>              print "a matching item was found"
>              break
>      else:
>          print "no matching item"
>          return False
>
>      # ... continue with value

Me too...

Same with while loops.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> 
> -- 
> Amaury



From jon+usenet at unequivocal.co.uk  Fri Sep 15 07:47:55 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 15 Sep 2006 11:47:55 GMT
Subject: add without carry
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<450a7dec$0$14661$626a54ce@news.free.fr>
Message-ID: <slrnegl4na.qdk.jon+usenet@snowy.squish.net>

In article <450a7dec$0$14661$626a54ce at news.free.fr>, Bruno Desthuilliers wrote:
> Hugh wrote:
>> Sorry, here's an example...
>> 
>> 5+7=12
>> 
>> added without carrying, 5+7=2
>> 
>> i.e the result is always less than 10
> 
>> I've been thinking some more about this and my brain is starting to
>> work something out... 
> 
> No need to think too long to come up with the most possibly Q&D solution:
> 
> res = int(str(5 + 7)[-1])

Am I missing something subtle in the question or is there some reason
that nobody has posted the correct solution:

  (a + b) % 10

?


From garymok33 at gmail.com  Thu Sep  7 04:27:55 2006
From: garymok33 at gmail.com (GM)
Date: 7 Sep 2006 01:27:55 -0700
Subject: Convert to big5 to unicode
Message-ID: <1157617674.982042.22970@i42g2000cwa.googlegroups.com>

Dear all,

Could you all give me some guide on how to convert my big5 string to
unicode using python? I already knew that I might use cjkcodecs or
python 2.4 but I still don't have idea on what exactly I should do.
Please give me some sample code if you could. Thanks a lot

Regards,

Gary



From gagsl-py at yahoo.com.ar  Tue Sep 12 00:19:56 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 01:19:56 -0300
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
Message-ID: <7.0.1.0.0.20060912005652.038a4728@yahoo.com.ar>

At Monday 4/9/2006 17:02, alf wrote:

>I have a reference to certain objects. What is the most pythonic way to
>test for valid reference:

By "valid reference" you mean, you have initially:
obj = None
and you want to detect whether obj is bound to another, different, 
object, right?

>         if obj:

This checks whether obj is considered True, not whether it is None. 
e.g. obj=[] would not pass.

>         if None!=obs:

Would be OK, but the next one is better:

>         if obj is not None:

This is what you are looking for! :)



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From tim at tdw.net  Fri Sep 29 11:57:15 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 29 Sep 2006 16:57:15 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <G53642238.475.1301.1@mx-extra>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>
	<G53642238.475.1301.1@mx-extra>
Message-ID: <9afea2ac0609290857l867f432g5725b5e9efc6ec00@mail.gmail.com>

On 29/09/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Tim Williams wrote:
>
> > def check_lock():
> >     import os, sys
> >     try:
> >         os.remove({filename})
> >     except:
> >         if "Permission denied" in sys.exc_info()[1]:
> >             print 'This program is already running'
> >             sys.exit()
> >     f_lock = open({filename},'w')
>
> have you actually tried this on a Unix system ?

Nope ,  I don't have one anywhere close.   I'm M$ only.

I did forget disclaimers like "try something like" and "not tested"
etc etc  - my bad  !!!

So that I know my mistake, which bit fails (the text from
sys.exc_info()[1]?? ) , or is it all complete rubbish - and not
do-able -  on a *nix system ?

:)


From fuzzyman at gmail.com  Tue Sep 26 16:43:24 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 26 Sep 2006 13:43:24 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <mailman.693.1159282619.10491.python-list@python.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<mailman.693.1159282619.10491.python-list@python.org>
Message-ID: <1159303404.797267.86390@m7g2000cwm.googlegroups.com>


Mike C. Fletcher wrote:
> walterbyrd wrote:
> > If so, I doubt there are many.
> >
> > I wonder why that is?
> >
> I've now used Python in every job I've had for the last 10 years.
> Started off with web-sites for a few months, then writing
> VRML-processing libraries to piece together and massage virtual worlds
> (not a *lot* of jobs there).  After that worked on a piece of
> Cable-system SNMP monitoring software (again, not a *lot* of jobs in
> that).  After that billing/provisioning systems for VoIP (you really
> only need one).  The last two companies (one of which I own, one in
> which I was a partner) were python-only shops.
>
> PyGTA (Toronto Python User's Group), which is a fairly large user-group,
> seems to be about 60% (off-the-cuff estimate) paid Pythonistas, with
> some people picking it up for filling in corners and others spending all
> day working on it.
[snip..]

I've only been to a couple of the London Python groups, but the ratio
is a *bit* lower. Maybe 50%.

In London you get people from Resolver, Reportlab and Jamkit (Zope) who
use Python. Simon Brunning is a Pythonista in his spare time but uses
Java at work. He has got Jython fairly deeply embedded though.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml



From sjmachin at lexicon.net  Thu Sep  7 07:08:32 2006
From: sjmachin at lexicon.net (John Machin)
Date: 7 Sep 2006 04:08:32 -0700
Subject: help with unicode email parse
References: <1157378961.284028.55840@m79g2000cwm.googlegroups.com>
	<1157416665.006114.63170@h48g2000cwc.googlegroups.com>
	<1157425054.822558.228950@74g2000cwt.googlegroups.com>
	<1157465231.163700.279630@h48g2000cwc.googlegroups.com>
	<1157465543.794948.79000@i3g2000cwc.googlegroups.com>
	<1157471114.594330.123480@m73g2000cwd.googlegroups.com>
	<1157471386.436178.151310@m73g2000cwd.googlegroups.com>
	<1157510240.237102.202190@h48g2000cwc.googlegroups.com>
	<1157526684.506238.192580@i3g2000cwc.googlegroups.com>
	<1157601601.965201.95710@e3g2000cwe.googlegroups.com>
	<1157604050.886228.267330@p79g2000cwp.googlegroups.com>
Message-ID: <1157627312.123904.76620@m73g2000cwd.googlegroups.com>

neoedmund wrote:
> i want to get the subject from email and construct a filename with the
> subject.
> but tried a lot, always got error like this:
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 4:
> ordinal not in range(128)
>
>
> 	msg = email.message_from_string( text )
> 	title = decode_header( msg["Subject"] )
> 	title= title[0][0]
> 	#title=title.encode("utf8")

Why is that commented out?

> 	print title
> 	fn = ""+path+"/"+stamp+"-"+title+".mail"
>
>
> the variable "text"  come from sth like this:
> ( header, msg, octets ) = a.retr( i )
> text= list2txt( msg )
> def list2txt( l ):
> 	return reduce( lambda x, y:x+"\r\n"+y, l )
>
> anyone can help me out? thanks.

Not without a functional crystal ball.

You could help yourself considerably by (1) working out which line of
code the problem occurs in [the traceback will tell you that] (2)
working out which string is being decoded into Unicode, and has '\xe9'
as its 5th byte. Either that string needs to be decoded using something
like 'latin1' [should be specified in the message headers] rather than
the default 'ascii', or the code has a deeper problem ...

If you can't work it out for yourself, show us the exact code that ran,
together with the traceback. If (for example) title is the problem,
insert code like:
    print 'title=', repr(title)
and include that in your next post as well.

HTH,
John



From mail at microcorp.co.za  Fri Sep  8 05:07:42 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 8 Sep 2006 11:07:42 +0200
Subject: Tkinter listbox:get
References: <1157648718.742353.299980@m73g2000cwd.googlegroups.com>
Message-ID: <005901c6d326$5afbb0a0$03000080@hendrik>

<vedran_dekovic at yahoo.com> Wrote:


| Hi,
| I need help about Tkinter.I want,when somebody click on some item in
| listbox,then
| in new entry widget must write that item
| 
| Regards,
| Vedran

I have already covered the retrieval from the listbox in another thread.
You can set the entry box contents like this:

NameOfStringForEntryboxContents = StringVar()

Then in your definition of the Entry box, add in:

textvariable = NameOfStringForEntryboxContents

and when you have retreived the listbox entry:

NameOfStringForEntryboxContents.set(NameOfStringWithListboxStuff)

and it will appear in your entry field...

HTH 
-Hendrik



From metaperl.etc at gmail.com  Thu Sep 14 23:58:58 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 14 Sep 2006 20:58:58 -0700
Subject: Converting a varargs tuple to a list - a definite pitfall for new
	comers to Python
Message-ID: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>

The following program does not work if you uncomment     #lis =
["xmms2"] + list(args)

Evidently Python is opting for the nullary constructor list() as
opposed to the other one which takes a sequence. But no newcomer would
know this. And the Python docs dont give a good example of dealing with
taking a sequence of args and converting it to a list.

I must've spent 40 minutes looking through my ora books, googling and
irc'ing in vane on this.

import subprocess

def xmms2(*args):
    #lis = ["xmms2"] + list(args)
    lis = ["xmms2"] + [a for a in args]
    output = subprocess.Popen(lis,
stdout=subprocess.PIPE).communicate()[0]
    return output.splitlines()

def list():
    lis = xmms2('list')
    playtime_str = lis.pop()
    (total, playtime, time_str) = playtime_str.split()
    (h,m,s) = time_str.split(':')
    lis.pop()
    return dict( playlist = lis, playtime = (int(h), int(m), int(s)) )

if __name__ == '__main__':
    list()



From max at alcyone.com  Fri Sep 29 03:50:01 2006
From: max at alcyone.com (Erik Max Francis)
Date: Fri, 29 Sep 2006 00:50:01 -0700
Subject: eval(source, {'builtins': {}}) archived as Faq
In-Reply-To: <Xns984D572DCA244duncanbooth@127.0.0.1>
References: <1159484841.655115.15190@m7g2000cwm.googlegroups.com>
	<UoOdnUnUaN0vx4HYnZ2dnUVZ_o2dnZ2d@speakeasy.net>
	<Xns984D572DCA244duncanbooth@127.0.0.1>
Message-ID: <rqudnUyaS-ytTYHYnZ2dnUVZ_umdnZ2d@speakeasy.net>

Duncan Booth wrote:

> I'm slightly surprised that nobody has yet pointed out that the OP failed 
> at the very first hurdle here. If you are going to do this dangerous trick 
> then 'builtins' should be spelled '__builtins__':

I did, because otherwise the exploit I gave wouldn't have worked so easily.

The bottom line here is that you shouldn't even try to go through the 
exercise of seeing if you can bullet-proof a solution using eval; 
instead, you shouldn't even try.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
   Everyone wants to look good at his own funeral.
    -- Louis Wu


From email at christoph-haas.de  Sat Sep 16 13:46:34 2006
From: email at christoph-haas.de (Christoph Haas)
Date: Sat, 16 Sep 2006 19:46:34 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <200609161946.34360.email@christoph-haas.de>

On Saturday 16 September 2006 19:16, nicolasfr at gmail.com wrote:
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
>
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
>
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.

I like your enthusiasm but it appears that what you plan is similar to the 
Python Quick Reference at http://rgruet.free.fr/

I second that the Python documentation is lacking. There is no software 
that is adequately documented anyway. Show me a man page of a Perl module 
and it takes me minutes to use it. The same in Python often means Google 
to find some examples on how to use a module. Many parts of the standard 
library are badly documented IMHO. There is often no way to know how to 
use a certain module without looking at its source. But why don't you and 
I rather provide patches to the current documentation rather than writing 
yet another incomplete resource. IMHO python.org should be completed. And 
at least you motivated me to look for ways to contribute to python.org. :)

Cheers
 Christoph


From sybrenUSE at YOURthirdtower.com.imagination  Sat Sep 30 03:49:01 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sat, 30 Sep 2006 09:49:01 +0200
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
Message-ID: <slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>

Paul Rubin enlightened us with:
>> height = 0
>> for block in stack:
>>     if block.is_marked():
>>         print "Lowest marked block is at height", height
>>         break
>>     height += block.height
>> else:
>>     raise SomeError("No marked block")
>
>     all_heights = [block.height for block in stack if block.is_marked()]
>     if all_heights:
>       height = sum(all_heights)
>     else:
>       raise SomeError("No marked block")
>
> Alternatively (lower memory usage for large list):
>
>     all_heights = (block.height for block in stack if block.is_marked())
>     try:
>       height = all_heights.next()
>       height += sum(all_heights)
>     except StopIteration:
>       raise SomeError("No marked block")

I must say that the for/else construct is a LOT more readable than the
rewritten alternatives.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From bj_666 at gmx.net  Fri Sep 15 14:10:18 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 15 Sep 2006 20:10:18 +0200
Subject: how do you convert and array of doubles into floats?
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
Message-ID: <pan.2006.09.15.18.10.18.698711@gmx.net>

In <1158342034.282295.144660 at i3g2000cwc.googlegroups.com>, SpreadTooThin
wrote:

> I have some code...
> 
> import array
> 
> a = array.array('d')
> f = open('file.raw')
> a.fromfile(f, 10)
> 
> now I need to convert them into floats (32 bit...) what do i do?

What about:

b = array.array('f', a)

Ciao,
	Marc 'BlackJack' Rintsch


From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 05:02:26 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 11:02:26 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
Message-ID: <slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>

Lawrence D'Oliveiro enlightened us with:
> You're proposing two separate functions:
>
>     1) quoting of non-wildcard specials
>     2) quoting of wildcard specials

I'm suggesting functions based on the role of the string they need to
escape, not the characters in that string.

    1) Quoting of wildcard strings for a query using LIKE etc.
    2) Quoting of values for putting into queries.

You only need the first one, since every database interface that
follows PEP 249.

> I guess I don't have a strong preference for which way we do it, but
> I would suggest confining our discussion to non-stupid solutions.

Good suggestion. I'd say, write a function that escapes for use in
LIKE queries, and leave the other quoting to the database interface.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From grahn+nntp at snipabacken.dyndns.org  Sun Sep 17 04:16:37 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 17 Sep 2006 08:16:37 GMT
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>
	<1158239526.673977.312840@p79g2000cwp.googlegroups.com>
	<mailman.90.1158240404.10491.python-list@python.org>
	<1158241354.764008.214710@m73g2000cwd.googlegroups.com>
	<4mtbjsF7kpeuU1@uni-berlin.de>
	<1158249316.326019.119130@m73g2000cwd.googlegroups.com>
	<mailman.96.1158250959.10491.python-list@python.org>
Message-ID: <slrnegpnph.gim.grahn+nntp@frailea.sa.invalid>

On Thu, 14 Sep 2006 18:21:39 +0200, Fredrik Lundh <fredrik at pythonware.com> wrote:
> bmearns wrote:
...
> (and before you proceed, reading
>
>       http://cr.yp.to/ftp/security.html
>
> is also a good idea.

And RFC1123, and any number of FTP-related RFCs. There's even one fairly
early RFC that encourages everyone to use the PASV command exclusively -- I
still cannot see why he has to mess around with PORT.

> are you 110% sure that you absolutely definitely 
> have to use FTP rather than HTTP/WebDAV or somesuch).

Yeah; quoting RFC1123, from back in 1989:

| Internet users have been unnecessarily burdened for years by deficient
| FTP implementations.  Protocol implementors have suffered from the
| erroneous opinion that implementing FTP ought to be a small and
| trivial task. [---]

It seems to me (with my tiny knowledge of FTP) that if he has problems with
PORT/PASV, that's nothing compared to the difficulty of implementing
different data transfer modes and so on.

On the other hand, implementing FTP is a cool programming project ;-)

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From MonkeeSage at gmail.com  Sat Sep 23 05:17:04 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 02:17:04 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net>
	<1158959361.458232.278660@h48g2000cwc.googlegroups.com>
	<mailman.488.1158974186.10491.python-list@python.org>
Message-ID: <1159003024.148996.37990@k70g2000cwa.googlegroups.com>

Steve Holden wrote:
> Is this a serious suggestion, or simply an attempt at sardonic obscurantism?

Well, I was being serious, but now I'm afraid to see what kind of evils
I've acidentally stepped in, heh!? I honestly don't see anything wrong
with creating a DSL for a given problem domain. Where did I go astray?

Regards,
Jordan



From mikael at isy.liu.se  Thu Sep 21 11:12:56 2006
From: mikael at isy.liu.se (Mikael Olofsson)
Date: Thu, 21 Sep 2006 17:12:56 +0200
Subject: Changing behaviour of namespaces - solved, I think
In-Reply-To: <eeu6o9$2qd$03$1@news.t-online.com>
References: <mailman.404.1158839725.10491.python-list@python.org>	<eeu1ok$iru$02$1@news.t-online.com>	<mailman.414.1158845662.10491.python-list@python.org>
	<eeu6o9$2qd$03$1@news.t-online.com>
Message-ID: <4512ABF8.5000701@isy.liu.se>

Peter Otten wrote:
> Clearly more elegant than:
>
>   
>>>> print open(filename).read()
>>>>         
> b = a
>   
>>>> dummy = 42
>>>> names = []
>>>> while 1:
>>>>         
> ...     ns = dict((n, dummy) for n in names)
> ...     try:
> ...             execfile(filename, ns)
> ...     except NameError, e:
> ...             names.append(e[0][6:-16])
> ...     else:
> ...             break
> ...
>   
>>>> names
>>>>         
> ['a']
>   

That sure is nicer. My solution looks like shooting mosquitoes with an 
elephant rifle i comparison. Thanks.

/MiO


From metaperl at gmail.com  Fri Sep 15 06:38:47 2006
From: metaperl at gmail.com (metaperl)
Date: 15 Sep 2006 03:38:47 -0700
Subject: Converting a varargs tuple to a list - a definite pitfall for new
	comers to Python
In-Reply-To: <1158300995.224713.155350@e3g2000cwe.googlegroups.com>
References: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
	<1158300995.224713.155350@e3g2000cwe.googlegroups.com>
Message-ID: <1158316727.845843.124590@p79g2000cwp.googlegroups.com>


John Machin wrote:
> metaperl.etc at gmail.com wrote:
> > The following program does not work if you uncomment     #lis =
> > ["xmms2"] + list(args)
> >
> > Evidently Python is opting for the nullary constructor list() as
> > opposed to the other one which takes a sequence. But no newcomer would know this.
>
> Are you using "the nullary constructor list()" to mean "the 0-argument
> function list() that appears later in the script", and "the other one
> which takes a sequence" to mean the builtin function list()"???

No,  I'm talking about listing 2 here:
http://www-128.ibm.com/developerworks/library/os-python4/index.html

which states:
"If you look closely at the description for the list class in Listing
2, you'll see that two different constructors are provided. One takes
no arguments, and the other takes a sequence class."

and I figured that since the lower bound on arguments to *args could
zero, that Python was
default to the nullary constructor even before the function got its
args.

paranoia will do these things to you.


>
> >  And the Python docs dont give a good example of dealing with
> > taking a sequence of args and converting it to a list.
>
> You have produced 2 perfectly good examples yourself. What's your
> point?

I just mean that this:
http://docs.python.org/tut/node6.html#SECTION006730000000000000000

does not use list() at all.



> Here's a tip: when you get into a pickle like that, try running
> pychecker and/or pylint over your code. Here's what pychecker has to
> say:
>
> metaperllist.py:4: Invalid arguments to (list), got 1, expected 0
> metaperllist.py:10: (list) shadows builtin


Great suggestion. I had not heard of those. Thanks.



From rdsteph at mac.com  Mon Sep 25 08:40:17 2006
From: rdsteph at mac.com (rdsteph at mac.com)
Date: 25 Sep 2006 05:40:17 -0700
Subject: Introduction to Threading with Python, a podcast
Message-ID: <1159188017.363499.131470@b28g2000cwb.googlegroups.com>

Chris Hefele has done an excellent talk about programming with threads
using Python, including a fair amount of detail and a look at various
related tools and topics. Chris did a lot of research and put a lot of
effort into producing this podcast. I find it to be a particularly
clear and lucid explanation of the basic principles of programming with
threads.

This is a far better-than-normal piece of work, so I feel it is worth
mentioning here so that interested people can check it out, Go to
www.awaretek.com/python/index.html and just click on the top podcast in
the list of podcasts there.

Ron Stephens



From bencvt at gmail.com  Fri Sep 29 18:23:10 2006
From: bencvt at gmail.com (Ben Cartwright)
Date: 29 Sep 2006 15:23:10 -0700
Subject: Automatic methods in new-style classes
In-Reply-To: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
References: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
Message-ID: <1159568589.977941.182440@m73g2000cwd.googlegroups.com>

bertgoos at yahoo.com wrote:
> Hey, I have the following code that has to send every command it
> receives to a list of backends.
<snip>
> I would like to write each method like:
>
>     flush = multimethod()

Here's one way, using a metaclass:

class multimethod(object):
    def transform(self, attr):
        def dispatch(self, *args, **kw):
            results = []
            for b in self.backends:
                results.append(getattr(b, attr)(*args, **kw))
            return results
        return dispatch

def multimethodmeta(name, bases, dict):
    """Transform each multimethod object into an actual method"""
    for attr in dict:
        if isinstance(dict[attr], multimethod):
            dict[attr] = dict[attr].transform(attr)
    return type(name, bases, dict)

class MultiBackend(object):
    __metaclass__ = multimethodmeta
    def __init__(self, backends):
        self.backends = backends
    add = multimethod()

class Foo(object):
    def add(self, x, y):
        print 'in Foo.add'
        return x + y

class Bar(object):
    def add(self, x, y):
        print 'in Bar.add'
        return str(x) + str(y)

m = MultiBackend([Foo(), Bar()])
print m.add(3, 4)

# Output:
in Foo.add
in Bar.add
[7, '34']

--Ben



From seymour.morris at gmail.com  Sun Sep 17 21:27:02 2006
From: seymour.morris at gmail.com (Seymour)
Date: 17 Sep 2006 18:27:02 -0700
Subject: Mechanoid Web Browser - Recording Capability
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
	<878xkjxrs2.fsf@pobox.com>
Message-ID: <1158542822.685166.317930@i42g2000cwa.googlegroups.com>

Thanks John!
Lots of great leads in your post that I am busy looking at.  I did try
one program, MaxQ, that records web surfing.  It seems to work great.
I have looked at all of your leads and plan to give them all a try.
BTW, I am not sure how I came accross Mechanoid before Mechanize, but I
did and started to study that.   Somehow I had the notion that
Mechanize was a Pearl script.
Thanks again,
Seymour





John J. Lee wrote:
> "Seymour" <seymour.morris at gmail.com> writes:
>
> > I am trying to find a way to sign onto my Wall Street Journal account
> > (http://online.wsj.com/public/us) and automatically download various
> > financial pages on stocks and mutual funds that I am interested in
> > tracking.  I have a subscription to this site and am trying to figure
> > out how to use python, which I have been trying to learn for the past
> > year, to automatically login and capture a few different pages.
> [...]
>
> Just to add: It's quite possible that site has an "no scraping"
> condition in their terms of use.  It seems standard legal boilerplate
> on commercial sites these days.  Not a good thing on the whole, I tend
> to think, but you should be aware of it.
> 
> 
> John



From frank at chagford.com  Fri Sep  8 10:55:18 2006
From: frank at chagford.com (Frank Millman)
Date: 8 Sep 2006 07:55:18 -0700
Subject: Question about subclassing - version 2
In-Reply-To: <45017e8c$0$24467$626a54ce@news.free.fr>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
	<1157702727.358576.24280@m79g2000cwm.googlegroups.com>
	<45013a2d$0$27222$636a55ce@news.free.fr>
	<1157709228.066561.5810@h48g2000cwc.googlegroups.com>
	<45017e8c$0$24467$626a54ce@news.free.fr>
Message-ID: <1157727318.559159.257770@i42g2000cwa.googlegroups.com>


Bruno Desthuilliers wrote:
> Frank Millman wrote:
> >
> > I have not gone to the trouble of raising NotImplementedError - the
> > methods that the subclasses *must* override just have a 'pass'
> > statement. I guess it would be more correct to raise the error, as it
> > would give me a quicker indication of an error if I happened to omit
> > one, but in practice I would find out pretty quickly anyway.
>
> Mmm... My own experience is that methods that *must* be redefined are
> better raising NotImplementedError. Makes things more obvious IMHO.
>

Can't argue with that. I have just gone through my app and changed them
all :-)

Frank



From maxm at mxm.dk  Mon Sep 25 10:48:03 2006
From: maxm at mxm.dk (Max M)
Date: Mon, 25 Sep 2006 16:48:03 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfomg.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
Message-ID: <4517ec24$0$13947$edfadb0f@dread15.news.tele.dk>

Jon Ribbens skrev:
> In article <mailman.569.1159192888.10491.python-list at python.org>, Fredrik Lundh wrote:
>>> There's nothing to say that cgi.escape should take them both into account
>>> in the one function
>> so what exactly are you using cgi.escape for in your code ?
> 
> To escape characters so that they will be treated as character data
> and not control characters in HTML.
> 
>>> What precisely do you think it would "break"?
>> existing code, and existing tests.
> 
> I'm sorry, that's not good enough. How, precisely, would it break
> "existing code"? Can you come up with an example, or even an
> explanation of how it *could* break existing code?


Some examples are:

- Possibly any code that tests for string equality in a rendered 
html/xml page. Testing is a prefered development tool these days.

- Code that generates cgi.escaped() markup and (rightfully) for some 
reason expects the old behaviour to be used.

- 3. party code that parses/scrapes content from cgi.escaped() markup. 
(you could even break Java code this way :-s )

Any change in Python that has these consequences will rightfully be 
considered a bug. So what you are suggesting is to knowingly introduce a 
bug in the standard library!


You are right that the html generated by cgi.escape() would (probably) 
have the same visual appearence in the browsers. But that is a *very* 
narrow definition of being bug free and not breaking stuff.

If you cannot think of other examples for yourself where your change 
would introduce breakage, you are certainly not an experienced enough 
programmer to suggest changes in the standard lib!


Max M


From ptmcg at austin.rr._bogus_.com  Mon Sep 11 10:12:51 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Mon, 11 Sep 2006 14:12:51 GMT
Subject: extracting substrings from a file
References: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>
Message-ID: <D9eNg.17031$o42.1362@tornado.texas.rr.com>

<sofiafig at gmail.com> wrote in message 
news:1157977756.841188.8550 at p79g2000cwp.googlegroups.com...
> Hi,
>
> I have a file with several entries in the form:
>
> AFFX-BioB-5_at E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
> corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
> 7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
> 7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
> dethiobiotin synthetase (bioD), complete cds.
>
> 1415785_a_at /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
> /CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
> /DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
> /PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1
>
> and I would like to create a file that has only the following:
>
> AFFX-BioB-5_at  /GEN=bioB  /gb:J04423.1
>
> 1415785_a_at /gb:NM_009840.1 /GEN=Cct8

Here's a pyparsing solution that will address your immediate question, and 
also gives you some leeway for adding other "/" options to your search. 
Pyparsing's home page is at pyparsing.wikispaces.com.

-- Paul


data = """
AFFX-BioB-5_at E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
dethiobiotin synthetase (bioD), complete cds.

1415785_a_at /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
/CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
/DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
/PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1
"""

from pyparsing import *

# create expression we are looking for:
#   name [ junk word... ] /qualifier...
name = Word(alphanums,printables).setResultsName("name")
junkWord = ~(Literal("/")) + Word(printables)
qualifier = ("/" + Word(alphas+"_-.").setResultsName("key") + \
            oneOf("= :") + \
            Word(printables).setResultsName("value"))
expr = name + ZeroOrMore(junkWord) + \
            Dict(ZeroOrMore(qualifier)).setResultsName("quals")

# use parse action to repackage qualifier data to support "dict"-like
# access to qualifiers
qualifier.setParseAction( lambda t: (t.key,"".join(t)) )

# use this parse action instead if you just want whatever is
# after the '=' or ':' delimiter in the qualifier
# qualifier.setParseAction( lambda t: (t.key,t.value) )

# parse data strings, showing returned data structure
# (just to show what pyparsing results structure looks like)
for d in data.split("\n\n"):
    res = expr.parseString(d)
    print res.dump()
    print
print

# now just do what the OP wanted in the first place
for d in data.split("\n\n"):
    res = expr.parseString(d)
    print res.name, res.quals["gb"], res.quals["GEN"]


Gives these results:
['AFFX-BioB-5_at', 'E.', 'coli', [('GEN', '/GEN=bioB'), ('gb', 
'/gb:J04423.1')]]
- name: AFFX-BioB-5_at
- quals: [('GEN', '/GEN=bioB'), ('gb', '/gb:J04423.1')]
  - GEN: /GEN=bioB
  - gb: /gb:J04423.1

['1415785_a_at', [('gb', '/gb:NM_009840.1'), ('DB_XREF', 
'/DB_XREF=gi:6753327'), ('GEN', '/GEN=Cct8'), ('FEA', '/FEA=FLmRNA'), 
('CNT', '/CNT=482'), ('TID', '/TID=Mm.17989.1'), ('TIER', '/TIER=FL+Stack'), 
('STK', '/STK=281'), ('UG', '/UG=Mm.17989'), ('LL', '/LL=12469'), ('DEF', 
'/DEF=Mus')]]
- name: 1415785_a_at
- quals: [('gb', '/gb:NM_009840.1'), ('DB_XREF', '/DB_XREF=gi:6753327'), 
('GEN', '/GEN=Cct8'), ('FEA', '/FEA=FLmRNA'), ('CNT', '/CNT=482'), ('TID', 
'/TID=Mm.17989.1'), ('TIER', '/TIER=FL+Stack'), ('STK', '/STK=281'), ('UG', 
'/UG=Mm.17989'), ('LL', '/LL=12469'), ('DEF', '/DEF=Mus')]
  - CNT: /CNT=482
  - DB_XREF: /DB_XREF=gi:6753327
  - DEF: /DEF=Mus
  - FEA: /FEA=FLmRNA
  - GEN: /GEN=Cct8
  - LL: /LL=12469
  - STK: /STK=281
  - TID: /TID=Mm.17989.1
  - TIER: /TIER=FL+Stack
  - UG: /UG=Mm.17989
  - gb: /gb:NM_009840.1


AFFX-BioB-5_at /gb:J04423.1 /GEN=bioB
1415785_a_at /gb:NM_009840.1 /GEN=Cct8 




From lycka at carmen.se  Fri Sep 29 11:43:24 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Fri, 29 Sep 2006 17:43:24 +0200
Subject: Talking to marketing people about Python
In-Reply-To: <roy-D4C452.19080324092006@reader2.panix.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <efjeus$3nv$1@wake.carmen.se>

Roy Smith wrote:
> I'm working on a product which for a long time has had a Perl binding for 
> our remote access API.  A while ago, I wrote a Python binding on my own, 
> chatted it up a bit internally, and recently had a (large) customer enquire 
> about getting access to it.
> 
> I asked for permission to distribute the Python binding, and after a few 
> weeks of winding its way through the corporate bureaucracy I got an email 
> from a product manager who wants to meet with me to "understand the market 
> demand for Python API before we commercialize it".
> 
> Can anybody suggest some good material I can give to him which will help 
> explain what Python is and why it's a good thing, in a way that a 
> marketing/product management person will understand?

(I don't expect you to answer the questions below to us, they might
well be business secrets, it's just things you might want to think
about.)

It's certainly reasonable to ask those questions. Every item on your
product list has a cost (even if the development is done already), in
terms of maintenance, administration, making the product portfolio less
easy to digest etc. Also, if you've read Brook's "Mythical Man Month",
you know that it's a big difference between fully working code and
shippable product. Documentation, packaging etc costs plenty.

You need a reasonable demand to pay for these costs. Whether the
bindings have their own price in your price list, or are bundled and
seem to increase the overall value and lead to more sales of the big
product is a different matter.

I guess it might be good if you can figure out what he's really after...
Is this just business are usual, or have they been burnt by something
else? Is the Perl binding seen as a profit maker, or is it just a cost?

If there is a customer who wants it, that's certainly a relevant start,
particularly if they are willing to pay for it...

It's difficult to say so much without knowing more about your market. If
you plan to sell your system to Google, it might well be a big plus!

I'm not involved in the Perl community, so maybe I'm misinformed, but it
seems to me that Perl is a language in decline. I quote the perl6 web
site: "The community brainstorming process finished August 1, 2000, 
resulting in 361 RFCs." There is no release date set yet, more than six
years later. I suspect that most of those who want a better Perl than
Perl 5, have changed to Ruby already, even if the Perl 5 development has
continued from 5.6.0 to 5.8.8.

After all, there are reasons why the Perl community wanted to change
Perl so drastically, and there are also reasons why it wasn't deemed
reasonable to change the language more gradually. Compare this with
Python, where we progressively  get new features in each version, and
the purpose of the next major rewrite is more about trimming off
annoying warts in a controlled way. Many of the Perl 6 features the
Perl community are still waiting for have been in Python for a long,
long time. Others have been smoothly incorporated into the last years
minor revisions of Python while Perl is standing still.

I suspect that most of those with a lot of Perl code, will continue to
use it, but for new development, Perl might not be a preferred solution.
Providing a Python option gives you another strength here. Python can do
what Perl does, but it scales better, it's easier to maintain, and while
it's mature and widely spread, it's very actively developed, backed by
giants such as Google, and still growing in popularity. Just look at
Python and Perl books at Amazon.com. For Perl, 4 of the 12 books in the
first page (listing by relevance) are written in 2005-2006. For Python,
it's 8 of 12. Guess where the action is!

In other words, Python has to a significant taken over the role Perl
had. Perl once succeeded because it was in the right place at the
right time, but it's failed in the long ruin because it can't handle
the complexity of real world applications when they scale. It gets too
messy. Python can. I'm certainly not the only old Perl programmer who
jumped ship as soon as I met Python and never looked back.

The only competitor to Python that I see today when it comes to
delivering functionality for general application development at a
very high productivity, is Ruby. Python is much more mature and widely
used than Ruby. As I see it, Python's multi-paradigm approach is also
more useful than Ruby's pure OO mindset.

Google is using Python a lot, and investing money in the development
of the language and main implementation. Microsoft is investing in its
.NET port IronPython, which was just released inversion 1.0. There are
other interesting projects, such as the E.U. funded PyPy project, which
might open up new doors.


From gagsl-py at yahoo.com.ar  Wed Sep 20 18:08:27 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 19:08:27 -0300
Subject: Pyglade, gtk, howto write more efficiently, and waste less code?
In-Reply-To: <1158757588.355767.10390@k70g2000cwa.googlegroups.com>
References: <1158675825.605612.313830@i42g2000cwa.googlegroups.com>
	<4naeu8F9gcq9U1@individual.net>
	<1158757588.355767.10390@k70g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060920190536.020e39d8@yahoo.com.ar>

At Wednesday 20/9/2006 10:06, Pipiten wrote:

>I have:
>         self.paths = ["","path1","path2","path3","path4","path5"]
>         self.paths[1] = self.wTree.get_widget("path1")
>         self.paths[2] = self.wTree.get_widget("path2")
>         self.paths[3] = self.wTree.get_widget("path3")
>         self.paths[4] = self.wTree.get_widget("path4")
>         self.paths[5] = self.wTree.get_widget("path5")
>
>what about if i have 30 widgets? how can i "get" them all?

Is this what you want?

for i,path in enumerate(self.paths):
   self.paths[i] = self.wTree.get_widget(path)



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From steve at holdenweb.com  Thu Sep 28 21:46:16 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 29 Sep 2006 02:46:16 +0100
Subject: sqlite3 error
In-Reply-To: <1159493520.289291.276850@b28g2000cwb.googlegroups.com>
References: <JnzSg.36$1n3.471@news.tufts.edu>	<1159394058.945948.119410@h48g2000cwc.googlegroups.com>	<yCQSg.41$1n3.351@news.tufts.edu>
	<1159493520.289291.276850@b28g2000cwb.googlegroups.com>
Message-ID: <efhtrm$64i$1@sea.gmane.org>

John Machin wrote:
> John Salerno wrote:
> 
>>John Machin wrote:
>>
>>>John Salerno wrote:
>>>
>>>>CREATE TABLE Researchers (
>>>>     researcherID varchar(9) PRIMARY KEY NOT NULL,
>>>>     birthYear int(4) DEFAULT NULL,
>>>>     birthMonth int(2) DEFAULT NULL,
>>>>     birthDay int(2) DEFAULT NULL,
>>>>     birthCountry varchar(50) DEFAULT NULL,
>>>>     birthState char(2) DEFAULT NULL,
>>>>     birthCity varchar(50) DEFAULT NULL,
>>>>     nameFirst varchar(50) NOT NULL,
>>>>     nameLast varchar(50) NOT NULL,
>>>>     nameGiven varchar(255) DEFAULT NULL,
>>>
>>>A bit OT, but one answer to the "can you make a living with just
>>>Python" question is "Yup, tool of choice for rummaging in and fixing
>>>data that's been mangled by users cramming it into dodgy data models"
>>>:-)
>>>
> 
> [snip]
> 
>>>(2) It's not apparent how you would use the first, last, and given
>>>names columns, especially with two of them being "not null". Consider
>>>how you would store e.g.:
>>>J Edgar Hoover
>>>DJ Delorie
>>>Sukarno
>>>35
>>>Maggie Cheung Man-Yuk
>>>Molnar Janos
>>>Fatimah binte Rahman
>>>Zhang Manyu
>>
>>Not sure I follow you on some of these examples. In the case of J Edgar
>>Hoover, I would just put the full name for his first name, or if "J" is
>>entered, then just that, I suppose. Given name will be first name +
>>middle name(s). (I took most of this schema from a baseball database, so
>>maybe it's just something that worked better there.)
> 
> 
> You sure to be using "last name" to mean "surname" in the sense of
> unchanging family name e.g. John and Mary Smith are the children of
> Fred Smith, who is the son of Joe Smith.
> 
> You would address a letter to Mary as "Dear Ms Smith", and in follow-on
> paragraphs in (say) a news article might refer to her using only the
> surname  e.g. "Smith also announced ...".
> 
> The problems are (1) there are cultures that don't have the concept of
> a surname, and if they do, it may not be the "last name" (2) the name
> may consist of only one word (giving you problems with "not null") or
> not even be a word.
> 
> DJ Delorie -- his "given name" *is* DJ
> Sukarno -- one word name
> 35 -- some jurisdictions allow name to include (or consist solely of)
> digits
> Maggie Cheung Man-Yuk -- surname is Cheung [Hong Kong romanisation]
> Molnar Janos -- surname is Molnar
> Fatimah binte Rahman -- no surname; daughter of person whose given name
> is Rahman
> Zhang Manyu -- surname is Zhang [pinyin romanisation]; same person as
> Maggie Cheung Man-Yuk
> 
> It gets better:
> 
> Iceland: Jon Bjornsson and Hildur Bjornsdottir are the children of
> Bjorn Eiriksson.
> 
> Portuguese: Jose Carlos Fernandes [mothers's family name] Rodrigues
> [fathers's family name]; first step in shortening gives Jose Carlos
> Rodrigues -- no drama here, but compare with Spanish: Jose Carlos
> Fernandez [father's family name] Rodriguez [mother's family name],
> shortened to Jose Carlos Fernandez.
> 
> [parts of] Somalia, Ethiopia: [using English given-name words for
> clarity] Tom Dick Harry and Janet Dick Harry are the children of Dick
> Harry Fred, who is the son of Harry Fred Joe.
> 
> Vietnamese: Full name e.g. Nguyen Thi Hoa Dung -- I have seen this
> recorded as last name = Nguyen (that's the family name; doing well so
> far), but first name = Thi. Thi means "Ms" or "female". The "first
> name" is actually Dung. Given the popularity of Nguyen as a family name
> (about 50% !!) , the recorded information has narrowed the choice to
> about 25% of the Vietnamese population :-(
> 
While I don't dispute any of this erudite display of esoteric 
nomenclature wisdom the fact remains that many (predominantly Western) 
databases do tend to use first and last name (in America often with the 
addition of a one- or two-character "middle initial" field).

So, having distilled your knowledge to its essence could you please give 
me some prescriptive advice about what I *should* do? :-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From martin at v.loewis.de  Sat Sep 23 02:02:40 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 23 Sep 2006 08:02:40 +0200
Subject: Building things with setup.py
In-Reply-To: <uWXQg.3954$IA.1364@newssvr11.news.prodigy.com>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<451368E9.10901@v.loewis.de>
	<A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>
	<451446F6.5060807@v.loewis.de>
	<uWXQg.3954$IA.1364@newssvr11.news.prodigy.com>
Message-ID: <4514CE00.1060102@v.loewis.de>

James Stroud schrieb:
> I think I would like to know how to avoid or correct these sort of
> issues in the future, which seem to be limited, for me at least, to
> scipy and numpy, with the possible exception of MySQLdb and its
> dependency on zlib. Ideally, I would like to understand exactly what
> causes these errors in addition to knowing what I can do to correct them
> in the future.

Let's take a specific failure, namely the line

/auto_nfs/data10/users/jstroud/Programs/bin/g77
-L/data10/users/jstroud/Programs/lib
-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3
build/temp.linux-i686-2.5/numpy/core/blasdot/_dotblas.o
-L/data10/users/jstroud/Programs/lib -lblas -lg2c -o
build/lib.linux-i686-2.5/numpy/core/_dotblas.so

This gives errors like

build/temp.linux-i686-2.5/numpy/core/blasdot/_dotblas.o(.text+0x758):numpy/core/blasdot/_dotblas.c:226:
undefined reference to `PyTuple_New'

That's not too surprising: this line tries to link the input
*as an executable program*, despite calling the output
_dotblas.so. In an executable program, all symbols need to
be defined; that's why it it complains about so many missing
symbols (including MAIN__ - which should never be missing
in a library). Even though adding python2.5.a to the linker
link makes these symbols appear, the result still won't
work, as you can't use an executable program file as if
it were a shared library.

Now, compare this to a succeeding build of a C extension
module,

gcc -pthread -shared -L/data10/users/jstroud/Programs/lib
-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3
-I/data10/users/jstroud/Programs/include
-I/data10/users/jstroud/Programs/qt/include -I/usr/include
-I/data10/users/jstroud/Programs/include/freetype2/freetype
build/temp.linux-i686-2.5/build/src.linux-i686-2.5/numpy/core/src/umathmodule.o
-lm -o build/lib.linux-i686-2.5/numpy/core/umath.so

Notice that this passes -shared to the compiler, requesting
construction of a shared library. This is the problem with
the g77 linker line; try invoking

/auto_nfs/data10/users/jstroud/Programs/bin/g77 -shared
-L/data10/users/jstroud/Programs/lib
-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3
build/temp.linux-i686-2.5/numpy/core/blasdot/_dotblas.o
-L/data10/users/jstroud/Programs/lib -lblas -lg2c -o
build/lib.linux-i686-2.5/numpy/core/_dotblas.so

manually (whether or not -pthread is also necessary
or supported for g77, I don't know). This should at least
make the complaints about missing symbols go away; you
should then see whether the resulting module can be
imported in Python.

If that solves the problem, the question is why the
-shared option isn't passed automatically; your setting
LDFLAGS might indeed be a cause.

Regards,
Martin


From glassfordm at hotmail.com  Fri Sep 29 10:28:05 2006
From: glassfordm at hotmail.com (Michael Glassford)
Date: Fri, 29 Sep 2006 10:28:05 -0400
Subject: Problems wth os.stat().st_mtime on Mac
Message-ID: <efjahm$9go$1@sea.gmane.org>

The Python 2.5 News at 
http://www.python.org/download/releases/2.5/NEWS.txt states that Python 
2.5 was changed to "Use Win32 API to implement os.stat/fstat. As a 
result, subsecond timestamps are reported, the limit on path name 
lengths is removed, and stat reports WindowsError now (instead of OSError)."

Although not mentioned in the Python 2.5 News, apparently there was a 
similar change on Mac that I'm having some problems with. On the Mac, 
just as on Windows, os.stat().st_mtime now returns a float instead of an 
integer. My problem is that the decimal part of the float is 
inconsistent in two ways.

1) The more serious problem (for me), is that on two machines (PowerPC 
Mac Mini running Tiger and Intel Mac Mini running Tiger), the decimal 
part of the returned float always appears to be ".0". On an iBook 
running Panther, however, the decimal part appears to be ".0" for many 
files, but for other files it contains actual significant digits. For 
example:

     import os
     f = open("/tmp/tmp.tmp", "w")
     f.close()
     print os.stat("/tmp/tmp.tmp").st_mtime

     #Both Mac Minis: 1159536137.0
     #iBook: 1159536233.08

a) Why the difference between machines?

Also, on the iBook, I created this listing:

     >>> for x in os.listdir("/tmp"): os.stat(os.path.join("/tmp", 
x)).st_mtime, x
     (1159466888.0, '502')
     (1159469259.0, '505')
     (1159472677.0, 'hsperfdata_build')
     (1159466868.0, 'mcx_compositor')
     (1159466908.0, 'SoftwareUpdateCheck.pkgcatalog')
     (1159532547.2405169, 'test.xxx')
     (1159536233.0794201, 'tmp.tmp')

b) Why do most files on this machine have ".0", while some (generally 
those I created myself using Python 2.5, I think) don't?


2) Even on the same machine, the results are different depending on how 
I access them. For example, after setting up as follows:

     strPath = "/tmp/test.xxx"
     f = open(strPath, "w")
     f.close()

I get the following output:

     >>> os.stat(strPath)
     (33188, 1822331L, 234881030L, 1, 505, 0, 0L, 1159532547, 
1159532547, 1159533628)
     #Note that the results are all integers, including mtime

     >>> os.stat(strPath).st_mtime
     1159532547.2405169
     #The result has 7 decimal places

I understand how the results can be different: the os.stat() function 
returns a posix.stat_result object, which gives back an integer value 
for the mtime if you call __str__ or __repr__, or if you iterate on it; 
and a float if you get the st_mtime attribute. But I would consider it a 
bug that the results are different: a float should be returned in either 
case.


Mike



From sjmachin at lexicon.net  Fri Sep 29 10:49:12 2006
From: sjmachin at lexicon.net (John Machin)
Date: 29 Sep 2006 07:49:12 -0700
Subject: "ValueError: Empty module name" on basic import
References: <mailman.931.1159533172.10491.python-list@python.org>
Message-ID: <1159541352.702121.246240@i3g2000cwc.googlegroups.com>

alain MONTMORY wrote:
> Hello everybody,
>
> I am a newbie to python so I hope I am at the right place to expose my
> problem..... :-[
>
> I am working on linux mandrake 10.1 with python :
> python -V
> Python 2.3.4
> I am trying o run the example which stay in the documentation in paragraph
> http://www.python.org/doc/2.4.2/ext/pure-embedding.html 5.3 Pure Embedding
> I download the code example from
> http://www.python.org/doc/2.4.2/ext/run-func.txt
> I call the file "TestOfficiel.c" and I compile it with :
> gcc -g -I/usr/include/python2.3/ TestOfficiel.c -o TestOfficiel
> -lpython2.3 -ldl
> all is OK (or seems to be...).
> as stated in the documentation  I creat a file "TestPythonFoo.py" which
> contain
> "
> def multiply(a,b):
>     print "Will compute", a, "times", b
>     c = 0
>     for i in range(0, a):
>         c = c + b
>     return c
> "
> I launch
> ./TestOfficiel ./TestPythonFoo.py multiply 3 2
> and as a result :
> ValueError: Empty module name
> Failed to load "./TestPythonFoo.py"

This is (I believe) because of the "." at the front.

> if I try an absolute path to the python file :
> ./TestOfficiel `pwd`/TestPythonFoo.py multiply 3 2
> I obtain :
> ImportError: No module named
> /space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py

It's quite correct, there never could be a module named that. The name
of your module is TestPythonFoo -- so all you should have to do is
    ./TestOfficiel TestPythonFoo multiply 3 2

> Failed to load
> "/space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py"


> Of course the file exist :
> [montmory at esoppe1 swigCallPython]$ ll
> /space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py
> -rwxrwx--x  1 montmory esoppe 126 sep 29 14:04
> /space/ESOPPE_PROJET/Outils/SwigPython/swigCallPython/TestPythonFoo.py*
>
> I found lot of post about "ValueError: Empty module name" but no clear
> solution (clear for me...).
> What's wrong ?
> my python version?
> Additionnal informations :
> gcc version 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)
>
> Thanks for your help,
>
> best regards,
>
> Alain
>
>
>
>
> --------------070105030901000008070407
> Content-Type: text/plain
> Content-Disposition: inline;
> 	filename="TestOfficiel.c"
> X-Google-AttachSize: 2022
>
> #include <Python.h>
>
> int
> main(int argc, char *argv[])
> {
>     PyObject *pName, *pModule, *pDict, *pFunc;
>     PyObject *pArgs, *pValue;
>     int i;
>
>     if (argc < 3) {
>         fprintf(stderr,"Usage: call pythonfile funcname [args]\n");

"pythonfile" is confusing; it should be "modulename".


>         return 1;
>     }
>
>     Py_Initialize();
>     pName = PyString_FromString(argv[1]);
>     /* Error checking of pName left out */
>
>     pModule = PyImport_Import(pName);

As the docs for this function say, it just calls the same routine that
is called by the __import__ built-in function. One can experiment with
that:


OS-prompt>copy con foo.py
print 'hello fubar world'
^Z
        1 file(s) copied.

OS-prompt>python
Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> __import__("foo")
hello fubar world
<module 'foo' from 'foo.py'>
>>> __import__("foo.py")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: No module named py
>>> __import__("")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: Empty module name
>>> __import__(r".\foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: Empty module name
>>> __import__(r"./foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: Empty module name
>>> __import__(r"/foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: No module named /foo
>>> __import__(r".foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: Empty module name
>>>

Hmmm ... "empty module name" is rather misleading when it starts with a
"." -- I can feel a bugfix^^^^^^ enhancement request coming on :-)

HTH,
John



From MonkeeSage at gmail.com  Thu Sep 21 07:47:48 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 21 Sep 2006 04:47:48 -0700
Subject: Can I inherit member variables?
In-Reply-To: <1158837842.914812.55190@i42g2000cwa.googlegroups.com>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<1158833478.915272.88700@e3g2000cwe.googlegroups.com>
	<1158837842.914812.55190@i42g2000cwa.googlegroups.com>
Message-ID: <1158839268.503214.189210@i42g2000cwa.googlegroups.com>


bearophileH... at lycos.com wrote:
> If you have multiple inheritance do you need the old style init anyway?

I guess so, I'm not really sure. This page
<http://fuhm.net/super-harmful/> talks about super() and MRO and such,
but I have only glanced over it the other day. I will read it more
fully sometime. I tend not to use multiple inheritance very often, and
when I do I usually don't need to initialize the superclasses. So I've
never really thought about it or researched into it. Someone smarter
than me would probably know (hey wait a second -- you're smarter than
me! I've seen your code golf score, buddy! ;) ).

Regards,
Jordan



From ldo at geek-central.gen.new_zealand  Tue Sep 26 17:17:17 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 09:17:17 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efc5b3$can$1@lust.ihug.co.nz>

In message <slrnehie29.pdu.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Tim Chase enlightened us with:
>> >>> cur.execute("select * from people where last_name in (%s)" %
>> ','.join('%s' for i in xrange(len(t))),
>> t)
> 
> But since the value of 'i' isn't used at all, it can be abbreviated
> to:
> 
>>>> cur.execute("select * from people where last_name in (%s)" %
> ','.join('%s' for i in t),
> t)

Stuff this. Here are some new functions, separating the escaping of specials
from that of wildcards:

    def SQLString(Str) :
        """returns a MySQL string literal which evaluates to Str. Needed
        for those times when MySQLdb's automatic quoting isn't good
        enough."""
        Result = []
        for Ch in str(Str) :
            if Ch == "\0" :
                Ch = "\\0"
            elif Ch == "\010" :
                Ch = "\\b"
            elif Ch == "\011" :
                Ch = "\\t"
            elif Ch == "\012" :
                Ch = "\\n"
            elif Ch == "\015" :
                Ch = "\\r"
            elif Ch == "\032" :
                Ch = "\\z"
            elif Ch == "'" or Ch == "\"" or Ch == "\\" :
                Ch = "\\" + Ch
            #end if
            Result.append(Ch)
        #end for
        return "\"" + "".join(Result) + "\""
    #end SQLString

    def EscapeSQLWild(Str) :
        """escapes MySQL pattern wildcards in Str."""
        Result = []
        for Ch in str(Str) :
            if Ch == "%" or Ch == "_" :
                Result.append("\\")
            #end if
            Result.append(Ch)
        #end for
        return "".join(Result)
    #end EscapeSQLWild

So to turn the result from EscapeSQLWild into a string, you still need to
wrap it in SQLString.

And here is the corresponding replacement for my previous QuoteSQLList
routine:

    def SQLStringList(TheList) :
        """returns a MySQL list containing the items of TheList, suitable
        for use in an "in" clause."""
        return \
            "(" + ", ".join([SQLString(Str) for Str in TheList]) + ")"
    #end SQLStringList

So Tim Chase's example above now becomes:

    cur.execute("select * from people where last_name in %s" %
SQLStringList(t))

Much simpler, isn't it?

And there are other, more dynamic cases where explicit quoting using
SQLString is easier than trying to make do with autoquoting.


From hg at nospam.com  Thu Sep 14 08:14:21 2006
From: hg at nospam.com (hg)
Date: Thu, 14 Sep 2006 07:14:21 -0500
Subject: socket and threading ... bad file descriptor
In-Reply-To: <FmbOg.138434$LF4.40041@dukeread05>
References: <FmbOg.138434$LF4.40041@dukeread05>
Message-ID: <fObOg.138436$LF4.91029@dukeread05>

hg wrote:
> Hi,
> 
> I have two classes, one listens and accepts connections, gets the
> socket, reads the first byte from the opened socket then launches a
> thread (threading) and gives it the socket identifier.
> 
> The first time the thread attempts to read from the given socket,
> socket.py raises a bad file descriptor in _dummy.
> 
> I tried using plain threads with the same problem.
> 
> Any clue ?
> 
> Thanks,
> 
> hg

Bug discovered, sorry


From lh84777 at yahoo.fr  Wed Sep  6 12:21:58 2006
From: lh84777 at yahoo.fr (lh84777 at yahoo.fr)
Date: 6 Sep 2006 09:21:58 -0700
Subject: Refactor a buffered class...
Message-ID: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>

Hello,

i'm looking for this behaviour and i write a piece of code which works,
but it looks odd to me. can someone help me to refactor it ?

i would like to walk across a list of items by series of N (N=3 below)
of these. i had explicit mark of end of a sequence (here it is '.')
which may be any length and is composed of words.

for: s = "this . is a . test to . check if it . works . well . it looks
. like ."
the output should be (if grouping by 3) like:

=> this .
=> this . is a .
=> this . is a . test to .
=> is a . test to . check if it .
=> test to . check if it . works .
=> check if it . works . well .
=> works . well . it looks .
=> well . it looks . like .

my piece of code :

import sys

class MyBuffer:
    def __init__(self):
        self.acc = []
        self.sentries = [0, ]
    def append(self, item):
        self.acc.append(item)
    def addSentry(self):
        self.sentries.append(len(self.acc))
        print >> sys.stderr, "\t", self.sentries
    def checkSentry(self, size, keepFirst):
        n = len(self.sentries) - 1
        if keepFirst and n < size:
            return self.acc
        if n % size == 0:
            result = self.acc
            first = self.sentries[1]
            self.acc = self.acc[first:]
            self.sentries = [x - first for x in self.sentries]
            self.sentries.pop(0)
            return result

s = "this . is a . test to . check if it . works . well . it looks .
like ."
l = s.split()
print l

mb = MyBuffer()
n = 0
for x in l:
    mb.append(x)
    if x == '.':
        # end of something
        print "+", n
        n += 1
        mb.addSentry()
        current = mb.checkSentry(3, True) # GROUPING BY 3
        if current:
            print "=>", current



From gal.diskin at gmail.com  Tue Sep 26 10:02:41 2006
From: gal.diskin at gmail.com (Gal Diskin)
Date: 26 Sep 2006 07:02:41 -0700
Subject: threading, subprocesses and wait
In-Reply-To: <mailman.681.1159278557.10491.python-list@python.org>
References: <1159277357.156624.115740@b28g2000cwb.googlegroups.com>
	<mailman.681.1159278557.10491.python-list@python.org>
Message-ID: <1159279361.619480.262690@h48g2000cwc.googlegroups.com>


Jean-Paul Calderone wrote:
> On 26 Sep 2006 06:29:17 -0700, Gal Diskin <gal.diskin at gmail.com> wrote:
> >Hi all,
> >I'm writing a python program using threads to open several subprocesses
> >concurrently (using module subprocess) and wait on them. I was
> >wondering if there is a possibilty that a thread will return from wait
> >even though the subprocess that finished was created by another thread
> >thats also waiting.
> >
> >i.e. - 2 threads, each thread opens a subprocess and waits. The
> >subprocess created by thread 1 has ended and thread 2 is released from
> >wait instead of thread 1. Is this scenario possible? (I have reason to
> >believe this has happend to me, but it seems unreasonable behaviour)
>
> From a superficial reading of the code, it looks like this should not
> happen.  The wait call uses waitpid(2) which will only return when the
> specified pid has terminated.
>
> On the other hand, it performs no error handling at all, so if the SIGCHLD
> for thread 1's process is delivered to thread 2, it may cause the wait call
> to fail with an EINTR OSError.  Whether this is actually possible or not
> depends on what signal handlers, if any, have been installed, as well as the
> underlying C and threading libraries, though.
> 
> Jean-Paul

Thanks for the quick answer.



From bj_666 at gmx.net  Thu Sep  7 11:57:29 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Thu, 07 Sep 2006 17:57:29 +0200
Subject: IronPython on Mono howto
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
	<mailman.122.1157636133.5279.python-list@python.org>
Message-ID: <pan.2006.09.07.15.57.27.673497@gmx.net>

In <mailman.122.1157636133.5279.python-list at python.org>, skip wrote:

> One thing I did find especially annoying though was that none of the editing
> keys worked.  DELETE, BACKSPACE, Ctrl-U.  All just inserted themselves.
> Ctrl-D didn't exit.  (I had to "raise SystemExit" to exit.)
> 
> Is this a known problem?  Is it a Mono thing or an IronPython thing?  Any
> workaround?

The `boo` shell and the `Nemerle` shell can be quit with Ctrl-D under
Mono, so I guess it's an `IronPython` thing.

Ciao,
	Marc 'BlackJack' Rintsch


From python at rcn.com  Tue Sep 12 21:02:28 2006
From: python at rcn.com (Raymond Hettinger)
Date: 12 Sep 2006 18:02:28 -0700
Subject: "filtered view" upon lists?
In-Reply-To: <mailman.337.1158062350.5279.python-list@python.org>
References: <mailman.337.1158062350.5279.python-list@python.org>
Message-ID: <1158109348.548136.140950@i3g2000cwc.googlegroups.com>

[Wildemar Wildenburger]
> I don't know how else to call what I'm currently implementing: An object
> that behaves like a list but doesn't store it's own items but rather
> pulls them from a larger list (if they match a certain criterion).
> Changes to the filter are instantly reflected in the underlying list.
> Clear enough?

Here's some code to try out:

import UserList

class ListView(UserList.UserList):
    @property
    def data(self):
        return filter(self._filter_function, self._actual_list)
    def __init__(self, actual_list, filter_function=None):
        self._actual_list = actual_list
        self._filter_function = filter_function

### Example calls
a = range(10)
b = ListView(a, lambda x: x%2==0)
print list(b), len(b), b[2], b[:3]
a[:] = range(10,20)
print list(b), len(b), b[2], b[:3]



Raymond Hettinger



From bjobrien62 at gmail.com  Wed Sep 20 18:05:28 2006
From: bjobrien62 at gmail.com (SpreadTooThin)
Date: 20 Sep 2006 15:05:28 -0700
Subject: How do I define a global constant...
Message-ID: <1158789928.010800.283130@e3g2000cwe.googlegroups.com>

How do I define a constant that I can use in my script...
For example lets say I have a file called constants.py and in there I
have PI = 3.14

in my test script I do:

from constants import *

How do I access PI later on?


Pardon my newbie questions...



From anthra.norell at vtxmail.ch  Thu Sep 14 07:44:20 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Thu, 14 Sep 2006 13:44:20 +0200
Subject: stock quotes
In-Reply-To: <bF2Og.230637$k%3.67439@dukeread12>
References: <bF2Og.230637$k%3.67439@dukeread12>
Message-ID: <45094094.7020308@vtxmail.ch>

Donlingerfelt wrote:
> I would like to download stock quotes from the web, store them, do
> calculations and sort the results.  However I am fairly new and don't have a
> clue how to parse the results of a web page download.   I can get to the
> site, but do not know how to request the certain data  need.  Does anyone
> know how to do this?  I would really appreciate it.  Thanks.
>
>
>   

Hi,

   Heres's example 8.4 from the SE manual:

----------------------------------------------------------------------------------------------------------------------------------

> >> def get_current_stock_quotes (symbols):

      import urllib

      url = 'http://finance.yahoo.com/q/cq?d=v1&s=' + '+'.join (symbols)

      htm_page = urllib.urlopen (url)

      import SE

      keep = '"~[A-Z]+ [JFMAJSOND].+?%~==(10)"  "~[A-Z]+ 
[0-9][0-2]?:[0-5][0-9][AP]M.+?%~==(10)"'          

      Data_Extractor = SE.SE ('<EAT> ' + keep)

      Tag_Stripper = SE.SE ('"~<(.|\n)*?>~= " se/htm2iso.se | "~\n[ 
\t\n]*~=(10)" "~ +~= "')

      data = Data_Extractor (Tag_Stripper (htm_page.read ()))

      htm_page.close ()

      return data

> >> print get_current_stock_quotes (('GE','IBM','AAPL', 'MSFT', 'AA', 
'MER'))

GE 3:17PM ET 33.15 0.30 0.90%

IBM 3:17PM ET 76.20 0.47 0.61%

AAPL 3:22PM ET 55.66 0.66 1.20%

MSFT 3:22PM ET 23.13 0.37 1.57%

AA 3:17PM ET 31.80 1.61 4.82%

MER 3:17PM ET 70.24 0.82 1.15%

-----------------------------------------------------------------------------------------------------------------------------

If this meets your requirements you'll find SE here: 
http://cheeseshop.python.org/pypi/SE/2.2%20beta

Regards

Frederic



From scott.daniels at acm.org  Fri Sep 29 17:42:02 2006
From: scott.daniels at acm.org (Scott David Daniels)
Date: Fri, 29 Sep 2006 14:42:02 -0700
Subject: Automatic methods in new-style classes
In-Reply-To: <451d8a70$1@nntp0.pdx.net>
References: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
	<451d8a70$1@nntp0.pdx.net>
Message-ID: <451d8b5d$1@nntp0.pdx.net>

Scott David Daniels wrote:
> 
> class Forwards(object):
> 
>     to_forward = set(['flush', 'read', 'write', 'close'])
> 
>     def __init__(self, backends):
>         self.backends = backends
> 
>     def forwarder(self, methodname):
>         def method(*args, **kwargs):
>             for b in self.backends:
>                 getattr(b, methodname)(*args, **kwargs)
>         return forwarder
^^^       return method  # thinko.
> 
>     def __getattr__(self, name):
>         if name in self.to_forward:
>             return self.forwarder(name)
>         raise AttributeError("%r object has no attribute %r"
>                              % (self.__class__.__name__, name))

--Scott David Daniels
scott.daniels at acm.org


From sjmachin at lexicon.net  Wed Sep  6 02:10:35 2006
From: sjmachin at lexicon.net (John Machin)
Date: 5 Sep 2006 23:10:35 -0700
Subject: How to get all the file of a oppoint directory from a FTP
In-Reply-To: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>
References: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>
Message-ID: <1157523035.616973.44560@b28g2000cwb.googlegroups.com>


snowf wrote:
> There are no such a method using to download a whole directory  in  the
> lib of  ' ftplib '.
> thanks for anybody's help!

So you'll have to lash one up:

(untested)

Firstly,
    alist = []
    ftpobj.retrlines('list', alist.append)
should get you a list of filenames.

Secondly,

for fname in alist:
    f = open(fname, "wb")
    ftpobj.retrbinary('RETR ' + fname, f.write)
    f.close()

should do the business. Instead of using f.write as the callback, you
might like to wrap that in a function that counts the bytes received,
displays progress, etc.

HTH,
John



From crystalattice at gmail.com  Fri Sep  1 03:57:04 2006
From: crystalattice at gmail.com (crystalattice)
Date: 1 Sep 2006 00:57:04 -0700
Subject: Timeline for Python?
References: <mailman.10185.1157035875.27775.python-list@python.org>
Message-ID: <1157097423.946429.261370@p79g2000cwp.googlegroups.com>

I'd write for 2.4, even though 2.5 should be coming out "shortly".
There aren't many significant changes to the whole language between 2.4
and 2.5.  Probably the best thing is write for 2.4 and have a sidenote
stating where 2.5 operates differently.

The Python 3 timeline is almost a moving target right now; personally,
I don't think it will be out before next winter.  Maybe a beta but I
doubt the full version.



From fakeaddress at nowhere.org  Tue Sep 12 02:51:51 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Tue, 12 Sep 2006 06:51:51 GMT
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158040298.528737.52520@e3g2000cwe.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
Message-ID: <bOsNg.396$6S3.2@newssvr25.news.prodigy.net>

Licheng Fang wrote:
> Oh, please do have a look at the second link I've posted. There's a
> table comparing the regexp engines. The engines you've tested probably
> all use an NFA implementation.

Unfortunately, the stuff about NFA's is wrong. Friedl's awful
book was the first time I saw this confusion about what NFA is;
I don't know if he originated the mess or just propagated it.

"Nondeterministic finite automata" is well defined in theory
of computation. The set of languages accepted by NFA's is
exactly the same as the set accepted by DFA's.

What Python uses is search-and-backtrack. Unfortunately such
engines don't have much theory behind them, and it's hard to
reason generally about what they do.


-- 
--Bryan


From larry.bates at websafe.com  Tue Sep 12 12:22:31 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 12 Sep 2006 11:22:31 -0500
Subject: best small database?
In-Reply-To: <7x8xkqkm0g.fsf@ruckus.brouhaha.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>
	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
	<7x8xkqkm0g.fsf@ruckus.brouhaha.com>
Message-ID: <UKOdnScrXf0oQ5vYnZ2dnUVZ_vudnZ2d@comcast.com>

Paul Rubin wrote:
> Larry Bates <larry.bates at websafe.com> writes:
>> As far as "rational extension" is concerned, I think I can relate.
>> As a developer of imaging systems that store multiple-millions of
>> scanned pieces of paper online for customers, I can promise you
>> the file system is quite efficient at storing files (and that is
>> what the OP asked for in the original post) and way better than
>> storing in Oracle blobs.  Can you store them in the database,
>> absolutely.  Is it efficient and manageable.  It has been our
>> experience that it is not.  Ever tried to upgrade Oracle 9 to
>> Oracle 10 with a Tb of blobs?
> 
> I keep hearing complaints about Oracle's blob handling and I don't
> doubt they're true, but that sounds like an Oracle problem.  I haven't
> had any problems using blobs in MySQL though I've been a fairly
> lightweight user.

For small numbers of blobs it works fine.  The problem comes about,
more specifically, because Oracle's method for upgrading from one
version to another is Export, create new database, Import.  Exporting
of a large number of blobs is slow, requires lots of disk space, etc.
If the blobs are on the filesystem with a pointer in the database,
upgrading is is MUCH easier.  Granted I'm talking about millions of
pages of scanned .TIF images here.  Not a few files.

-Larry


From p.lavarre at ieee.org  Tue Sep 26 18:30:26 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 26 Sep 2006 15:30:26 -0700
Subject: shlex.split != shlex.shlex get_token til eof
In-Reply-To: <1159238098.139446.232380@b28g2000cwb.googlegroups.com>
References: <1158949149.537922.272920@h48g2000cwc.googlegroups.com>
	<1158963562.701766.283150@d34g2000cwd.googlegroups.com>
	<1159238098.139446.232380@b28g2000cwb.googlegroups.com>
Message-ID: <1159309826.253204.136840@i3g2000cwc.googlegroups.com>

Kindly offline the answer is:

(a) Python installation usually includes source, and thus
(b) UTSL:

$ pwd
C:\Python25\Lib\shlex.py
$ ...
$ pwd
/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5
$ grep -A 5 "def split" shlex.py
def split(s, comments=False):
    lex = shlex(s, posix=True)
    lex.whitespace_split = True
    if not comments:
        lex.commenters = ''
    return list(lex)
$

Voila the THREE undocumented ways that shlex.split has been overriding
the shlex.shlex defaults: nothing in wordchars, yes something in
whitespace_split, but also stuff in commenters and in posix.  (Of
these, the posix override is documented.)



From michele.simionato at gmail.com  Wed Sep 27 10:34:52 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 27 Sep 2006 07:34:52 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <1159367692.197632.162250@i3g2000cwc.googlegroups.com>

John Salerno wrote:
> But what if you are an expert Python program and have zero clue about
> other languages? Can you still earn a living that way, or do most/all
> companies require multiple language proficiency?

Well I want to play devil's advocate here, and I think that if you know
Python you
can earn your living. Heck, there are people knowing Visual Basic only
that earn
their living! ;)
Anyway, at work I use Python and SQL only (and a bit of bash and HTML).

  Michele Simionato



From http  Fri Sep 29 02:12:50 2006
From: http (Paul Rubin)
Date: 28 Sep 2006 23:12:50 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
Message-ID: <7xfyebgpzx.fsf@ruckus.brouhaha.com>

"MonkeeSage" <MonkeeSage at gmail.com> writes:
> def to_bin(x):
>   out = []
>   while x > 0:
>     out.insert(0, str(x % 2))
>     x = x / 2
>   return ''.join(out)

That returns the empty string for x=0.  I'm not sure if that's a bug
or a feature.

It also returns the empty string for x < 0, probably a bug.

It will break in Python 3, where 1 / 2 == 0.5.

Here's yet another version:

def to_bin(n):
    if n < 0: return '-' + to_bin(-n)
    if n==0: return '0'
    return ''.join(
            ("0000", "0001", "0010", "0011",
            "0100", "0101", "0110", "0111",
            "1000", "1001", "1010", "1011",
            "1100", "1101", "1110", "1111",)[int(d,16)] \
            for d in '%x'%n).lstrip('0')


From sjdevnull at yahoo.com  Tue Sep 26 17:25:24 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 26 Sep 2006 14:25:24 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <1159305924.604677.118300@i42g2000cwa.googlegroups.com>

John Salerno wrote:
> It's a nice thought that a person can earn a living programming with
> Python, which is fun enough to use just for its own sake. But for
> someone like me (i.e. no programming experience) it's always a little
> disheartening to see that most (if not all) job descriptions that ask
> for Python still require some C/C++ or other language knowledge. I
> suppose this isn't an issue if you studied CS in college, because you
> would have been exposed to many languages.

There are two seperate issues here.  My current job requires only
Python, unless you classify SQL as a programming language.  My previous
couple of jobs I used a mix of Python and C.

I don't think it's easy (perhaps impossible) to become a good
programmer without exposure to multiple kinds of languages.  If you're
really trying to become a well-rounded computer professional I'd
recommend reasonable exposure to at least:

* C
* A static functional language (ML, Haskell, etc)
* Lisp or scheme Scheme
* A static class-oriented language (Java, C++, etc)
* A dynamic OO language (Python, ruby, smalltalk, etc)

and at least a brief look at, say, Forth and Prolog.

Even though you may not ever use, say, ML and lisp in your work, IMO
you'll likely be a much better programmer at work if you've learned C,
Lisp, ML, Java, and Python than if you've learned C, C++, Java, Python,
Ruby, and VB.  And you'll have a much easier time learning new
languages if you've learned an array of different ones than if you've
been focused in on a couple of kinds of languages.



From Maria.Reinhammar at accalon.com  Wed Sep 20 08:42:19 2006
From: Maria.Reinhammar at accalon.com (Maria.Reinhammar at accalon.com)
Date: 20 Sep 2006 05:42:19 -0700
Subject: Using py2exe to wrap a service?
Message-ID: <1158756139.688916.90020@m73g2000cwd.googlegroups.com>

I have an app using active_directory.py and the std module asyncore in
a Windows Service.
Works perfectly!
That is, until I try to use py2exe to create a standalone (need to
avoid installing the entire Python etc. on the target system).

When I try to start the installed Service, the system tells me it
terminates prematurely
and in the event log I find:
The instance's SvcRun() method failed
  File "win32serviceutil.pyc", line 785, in SvcRun
  File "XXProxySvc.pyc", line 126, in SvcDoRun
  File "XXProxySvc.pyc", line 94, in setup
  File "D:\projects\XXProxy\DB.py", line 54, in loadFromAD
  File "active_directory.pyc", line 402, in search
  File "active_directory.pyc", line 398, in root
  File "active_directory.pyc", line 371, in AD
  File "active_directory.pyc", line 378, in _root
  File "win32com\client\__init__.pyc", line 73, in GetObject
  File "win32com\client\__init__.pyc", line 88, in Moniker
pywintypes.com_error: (-2147221020, 'Invalid syntax', None, None)

The offending line is:
import active_directory as AD
...
for item in AD.search ("objectCategory='Person'"):
...

I.e. the call to AD.search() is the entry point to the problem.

The setup.py is (pretty straight forward..):
from distutils.core import setup
import py2exe

class Target:
    def __init__(self, **kw):
        self.__dict__.update(kw)
        # for the versioninfo resources
        self.version = "0.9.0"
        self.company_name = "My Company"
        self.copyright = "My Company (c)"
        self.name = "FilterProxy"

################################################################
# a NT service, modules is required
myservice = Target(
    # used for the versioninfo resource
    description = "AD Driven Mail Filter",
    # what to build.  For a service, the module name (not the
    # filename) must be specified!
    modules = ["ProxySvc"]
    )

excludes = []
setup(options = {"py2exe": {# create a compressed zip archive
                            #"compressed": 1,
                            #"optimize": 2,
                            "excludes": excludes
                            }
                 },
      service=[myservice]
      )

'elp! Pleeeez!



From stuart at stuartbishop.net  Thu Sep 28 00:44:40 2006
From: stuart at stuartbishop.net (Stuart Bishop)
Date: Thu, 28 Sep 2006 11:44:40 +0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159296524.293839.306170@k70g2000cwa.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>	<45186d05$0$13975$edfadb0f@dread15.news.tele.dk>
	<1159296524.293839.306170@k70g2000cwa.googlegroups.com>
Message-ID: <451B5338.8030101@stuartbishop.net>

walterbyrd wrote:

> My research of this subject was very limited, just looked at the major
> job boards, and compared demand for python developers to demand for
> other languages, such as java, c++, visual basic, or php. An
> unscientific test, I realize. But, it's not easy to get good data on
> such a subject: everybody has an agenda, it seems.
> 
> I don't count jobs where python is an "also ran" skill. For example,
> sys-admin jobs where python is listed with a dozen other skills.

I think you are getting skewed results. The companies I have been involved
in that use Python tend to be after top-tier (or as close as they can
afford) programmers rather than the sort of applications you get by the
truckload if you advertise a job on 'the major job boards'. You get a much
better quality of applicant if you target niche boards (such as
http://www.python.org/community/jobs/), use word of mouth, or posts to
highly targeted mailing lists like the ones run by your companies local
users groups or direct contact with visible community members with the
skillsets you need. The results get further skewed on 'the major job boards'
when one real job results in 100 job notices from 100 different recruitment
companies.

My personal experience is that there is a shortage of good Python
programmers. In Melbourne, Australia for example there is a continual need
for about 2 more - one Python shop there just hires clueful developers and
makes their first task 'learn Python'. We generally have a few positions
open at any particular moment too - http://www.ubuntu.com/employment (but we
are picky - it is hard to hand hold when the hand is several time zones away).

On a slight tangent, one of the appealing things about Python (and other
'non-mainstream' languages) in the past has been that the people who knew
Python also tended to be the people you wanted to employ - they generally
had experience in other languages but moved onto something they perceived as
'better' either at work or home. It indicated a level of care and pride
about their profession rather than someone who just treated cutting code as
a day job. That might be changing now that Python is becoming more visible
on peoples radar.

-- 
Stuart Bishop <stuart at stuartbishop.net>
http://www.stuartbishop.net/

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From sjmachin at lexicon.net  Sat Sep 23 10:22:16 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 07:22:16 -0700
Subject: anybody using python 2.5 that raises error while importing?
In-Reply-To: <1159019033.982301.172480@m7g2000cwm.googlegroups.com>
References: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>
	<1158935377.820149.242390@i42g2000cwa.googlegroups.com>
	<1159019033.982301.172480@m7g2000cwm.googlegroups.com>
Message-ID: <1159021336.190735.215140@e3g2000cwe.googlegroups.com>


daniel wrote:
> John Machin wrote:
> > daniel wrote:
> > > there's a dll extension used to be imported with no error under version
> > > 2.4.3, but the new python complains that the name of the module can't
> > > be found. seems not mentioned in the official documentation, any work
> > > around to fix the issue without switching back to the old version?
> >
> thank you for your reply..
>
> > Did/does its name end in .dll or in .pyd?
> It ends in .dll
>
> > Have you procured a new one (necessary when there's a change of minor
> > version number) and installed it in the right place?
> My output of "python -V" shows 2.5c2

Huh? The question was in effect "Have you obtained a NEW version of the
*DLL*?" This is necessary when you upgrade from Python 2.4 to Python
2.5.

>
> > Can you tell us the name of the module, and the path to the DLL/PYD
> The dll is distributed with a third party library, it claimed to be
> compatible with 2.4, It was installed at "d:\" on my box, and the path
> had been added to my PYTHONPATH variable.

Do you mean that the full path to the module was
    d:\the_module_name.dll
?

>
> > that is/was imported by Python 2.4?
> yep, it works very well with python 2.4, so, I'm just wondering if
> there is a fix for using with 2.5

No, you can't use a 2.4-compatible binary module with 2.5.

>
> > Have you contacted the author(s) of the module?
> uh.. not yet, because they clearly mentioned that in the doc.

They clearly mentioned *what* in the doc?

Have they yet announced availibility of a 2.5-supported version of
their software?


> > Have you installed Python 2.5 in its own directory e.g. c:\python25
> > (the default)? Python 2.4, same question? Have you uninstalled 2.4?
> I already uninstalled the version 2.4. and put python25 in drive "d:".
> there's probably no problem with my environment variables, maybe I
> should check for a updated version of python.

Huh, again? Firstly, 2.5 final has been released -- you should really
subscribe to the python-announce mailing list so that you don't need to
"check for" major events.
Secondly, upgrading from 2.5c2 to 2.5 is generally a good thing, but it
won't solve your "missing dll" problem.

>From 2.5 onwards,  a Python extension module must be named .pyd, it
can't be named .dll. You could try renaming it, but you are likely to
get this error when you try to import it in 2.5:
    ImportError: Module use of python24.dll conflicts with this version
of Python.
IOW, the version compatibility problem.

Bottom line: you need to get an updated extension module from the
software supplier.

HTH,
John



From kbk at shore.net  Sat Sep 30 22:11:45 2006
From: kbk at shore.net (Kurt B. Kaiser)
Date: Sat, 30 Sep 2006 22:11:45 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200610010211.k912BjNN001090@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  422 open ( +2) /  3415 closed ( +5) /  3837 total ( +7)
Bugs    :  933 open (+18) /  6212 closed (+26) /  7145 total (+44)
RFE     :  237 open ( +2) /   239 closed ( +1) /   476 total ( +3)

New / Reopened Patches
______________________

platform.py support for IronPython  (2006-09-23)
       http://python.org/sf/1563842  opened by  Anthony Baxter

pybench support for IronPython  (2006-09-23)
       http://python.org/sf/1563844  opened by  Anthony Baxter

Py_signal_pipe  (2006-09-24)
       http://python.org/sf/1564547  opened by  Gustavo J. A. M. Carneiro

tarfile depends on undocumented behaviour  (2006-09-25)
       http://python.org/sf/1564981  opened by  Seo Sanghyeon

use LSB version information to detect a platform  (2006-09-25)
       http://python.org/sf/1565037  opened by  Matthias Klose

doc changes for SMTP_SSL  (2006-09-28)
       http://python.org/sf/1567274  opened by  Monty Taylor

super() and instancemethod() shouldn't accept keyword args  (2006-09-29)
CLOSED http://python.org/sf/1567691  opened by  ?iga Seilnacht

Patches Closed
______________

Python 2.5 fails with -Wl,--as-needed in LDFLAGS  (2006-09-21)
       http://python.org/sf/1562825  closed by  masterdriverz

super() and instancemethod() shouldn't accept keyword args  (2006-09-29)
       http://python.org/sf/1567691  closed by  gbrandl

Enable SSL for smtplib  (2005-09-05)
       http://python.org/sf/1282340  closed by  gbrandl

pyclbr reports different module for Class and Function  (2006-09-18)
       http://python.org/sf/1560617  closed by  gbrandl

datetime's strftime limits strings to 127 chars  (2006-09-12)
       http://python.org/sf/1557390  closed by  gbrandl

New / Reopened Bugs
___________________

Quitter object masked  (2006-05-01)
       http://python.org/sf/1479785  reopened by  kbk

,msi fails for AMD Turion 64 mobile  (2006-09-21)
CLOSED http://python.org/sf/1563185  opened by  Andy Harrington

temporary file(s)  (2006-09-22)
CLOSED http://python.org/sf/1563236  opened by  Grzegorz Makarewicz

http//... test file  (2006-09-22)
CLOSED http://python.org/sf/1563238  opened by  Grzegorz Makarewicz

python_d python  (2006-09-22)
       http://python.org/sf/1563243  opened by  Grzegorz Makarewicz

IDLE doesn't load - apparently without firewall problems  (2006-09-22)
       http://python.org/sf/1563630  opened by  dani

struct.unpack doens't support buffer protocol objects  (2006-09-23)
       http://python.org/sf/1563759  reopened by  loewis

struct.unpack doens't support buffer protocol objects  (2006-09-23)
       http://python.org/sf/1563759  opened by  Adal Chiriliuc

Build of Python 2.5 on AIX 5.3 with GCC Fails  (2006-09-22)
       http://python.org/sf/1563807  opened by  Daniel Clark

Typo in whatsnew/pep-342.html  (2006-09-23)
CLOSED http://python.org/sf/1563963  opened by  Xavier Bassery

IDLE invokes completion even when running code  (2006-09-23)
       http://python.org/sf/1563981  opened by  Martin v. L?wis

2.6 changes stomp on  2.5 docs  (2006-09-23)
       http://python.org/sf/1564039  opened by  ggpauly

Fails to install on Fedora Core 5  (2006-09-20)
CLOSED http://python.org/sf/1562171  reopened by  mnsummerfield

BaseCookie does not support "$Port"  (2006-09-24)
       http://python.org/sf/1564508  opened by  Anders Aagaard

Unicode comparison change in 2.4 vs. 2.5  (2006-09-24)
CLOSED http://python.org/sf/1564763  opened by  Joe Wreschnig

update Lib/plat-linux2/IN.py  (2006-09-25)
       http://python.org/sf/1565071  opened by  Matthias Klose

Misbehaviour in zipfile  (2006-09-25)
CLOSED http://python.org/sf/1565087  opened by  Richard Philips

make plistlib.py available in every install  (2006-09-25)
       http://python.org/sf/1565129  opened by  Matthias Klose

os.stat() subsecond file mode time is incorrect on Windows  (2006-09-25)
       http://python.org/sf/1565150  opened by  Mike Glassford

Repair or Change installation error  (2006-09-26)
       http://python.org/sf/1565509  opened by  Greg Hazel

does not raise SystemError on too many nested blocks  (2006-09-26)
       http://python.org/sf/1565514  opened by  Greg Hazel

gc allowing tracebacks to eat up memory  (2006-09-26)
       http://python.org/sf/1565525  opened by  Greg Hazel

webbrowser on gnome runs wrong browser  (2006-09-26)
CLOSED http://python.org/sf/1565661  opened by  kangabroo

'all' documentation missing online  (2006-09-26)
       http://python.org/sf/1565797  opened by  Alan

sets missing from standard types list in ref  (2006-09-26)
       http://python.org/sf/1565919  opened by  Georg Brandl

pyexpat produces fals parsing results in CharacterDataHandle  (2006-09-26)
CLOSED http://python.org/sf/1565967  opened by  Michael Gebetsroither

RE (regular expression) matching stuck in loop  (2006-09-27)
       http://python.org/sf/1566086  opened by  Fabien Devaux

T_ULONG -> double rounding in PyMember_GetOne()  (2006-09-27)
       http://python.org/sf/1566140  opened by  Piet Delport

Logging problem on Windows XP  (2006-09-27)
       http://python.org/sf/1566280  opened by  Pavel Krupets

Bad behaviour in <ossaudio audio device>.obuf*  (2006-09-27)
       http://python.org/sf/1566331  opened by  Sam Dennis

test_posixpath failure  (2006-09-27)
CLOSED http://python.org/sf/1566602  opened by  WallsRSolid

Idle 2.1 - Calltips Hotkey dies not work  (2006-09-27)
       http://python.org/sf/1566611  opened by  fladd

Library Reference Section 5.1.8.1 is wrong.  (2006-09-27)
CLOSED http://python.org/sf/1566663  opened by  Chris Connett

site-packages isn't created before install_egg_info  (2006-09-27)
       http://python.org/sf/1566719  opened by  James Oakley

urllib doesn't raise IOError correctly with new IOError  (2006-09-28)
CLOSED http://python.org/sf/1566800  opened by  Arthibus Gissehel

unchecked metaclass mro   (2006-09-28)
       http://python.org/sf/1567234  opened by  ganges master

logging.RotatingFileHandler has no "infinite" backupCount  (2006-09-28)
       http://python.org/sf/1567331  opened by  Skip Montanaro

False sentence about formatted print in tutorial section 7.1  (2006-09-28)
CLOSED http://python.org/sf/1567375  opened by  David Benbennick

tabs missing in idle options configure  (2006-09-28)
       http://python.org/sf/1567450  opened by  jrgutierrez

GetFileAttributesExA and Win95  (2006-09-29)
       http://python.org/sf/1567666  opened by  giomach

missing _typesmodule.c,Visual Studio 2005 pythoncore.vcproj  (2006-09-29)
       http://python.org/sf/1567910  opened by  everbruin

http://docs.python.org/tut/node10.html typo  (2006-09-29)
CLOSED http://python.org/sf/1567976  opened by  Simon Morgan

GUI scripts always return to an interpreter  (2006-09-29)
       http://python.org/sf/1568075  reopened by  jejackson

GUI scripts always return to an interpreter  (2006-09-29)
       http://python.org/sf/1568075  opened by  jjackson

Encoding bug  (2006-09-30)
CLOSED http://python.org/sf/1568120  opened by  ?er FADIL USTA

Tix is not included in 2.5 for Windows  (2006-09-30)
       http://python.org/sf/1568240  opened by  Christos Georgiou

init_types  (2006-09-30)
       http://python.org/sf/1568243  opened by  Bosko Vukov

broken info files generation  (2006-09-30)
       http://python.org/sf/1568429  opened by  Arkadiusz Miskiewicz

Bugs Closed
___________

,msi fails for AMD Turion 64 mobile  (2006-09-22)
       http://python.org/sf/1563185  closed by  loewis

temporary file(s)  (2006-09-22)
       http://python.org/sf/1563236  closed by  gbrandl

http//... test file  (2006-09-22)
       http://python.org/sf/1563238  closed by  gbrandl

Parser crash  (2006-09-12)
       http://python.org/sf/1557232  closed by  gbrandl

struct.unpack doens't support buffer protocol objects  (2006-09-23)
       http://python.org/sf/1563759  closed by  adalx

Typo in whatsnew/pep-342.html  (2006-09-23)
       http://python.org/sf/1563963  closed by  nnorwitz

Fails to install on Fedora Core 5  (2006-09-20)
       http://python.org/sf/1562171  closed by  mnsummerfield

Unicode comparison change in 2.4 vs. 2.5  (2006-09-25)
       http://python.org/sf/1564763  closed by  lemburg

python 2.5 fails to build with --as-needed  (2006-09-18)
       http://python.org/sf/1560984  closed by  gbrandl

Misbehaviour in zipfile  (2006-09-25)
       http://python.org/sf/1565087  closed by  gbrandl

webbrowser on gnome runs wrong browser  (2006-09-26)
       http://python.org/sf/1565661  closed by  gbrandl

pyexpat produces fals parsing results in CharacterDataHandle  (2006-09-26)
       http://python.org/sf/1565967  closed by  loewis

test_posixpath failure  (2006-09-27)
       http://python.org/sf/1566602  closed by  gbrandl

Library Reference Section 5.1.8.1 is wrong.  (2006-09-27)
       http://python.org/sf/1566663  closed by  gbrandl

urllib doesn't raise IOError correctly with new IOError  (2006-09-28)
       http://python.org/sf/1566800  closed by  gbrandl

False sentence about formatted print in tutorial section 7.1  (2006-09-28)
       http://python.org/sf/1567375  closed by  gbrandl

http://docs.python.org/tut/node10.html typo  (2006-09-30)
       http://python.org/sf/1567976  closed by  quiver

Encoding bug  (2006-09-30)
       http://python.org/sf/1568120  closed by  gbrandl

locale.format gives wrong exception on some erroneous input  (2006-01-23)
       http://python.org/sf/1412580  closed by  gbrandl

cgi.FormContentDict constructor should support parse options  (2006-03-24)
       http://python.org/sf/1457823  closed by  gbrandl

inspect.getargspec() is wrong for def foo((x)):  (2006-03-27)
       http://python.org/sf/1459159  closed by  gbrandl

Calls from VBScript clobber passed args  (2005-03-03)
       http://python.org/sf/1156179  closed by  gbrandl

datetime's strftime limits strings to 127 chars  (2006-09-12)
       http://python.org/sf/1556784  closed by  gbrandl

unicode('foo', '.utf99') does not raise LookupError   (2006-03-09)
       http://python.org/sf/1446043  closed by  gbrandl

struct.unpack problem with @, =, < specifiers  (2006-05-08)
       http://python.org/sf/1483963  closed by  gbrandl

Incomplete info in 7.18.1 ZipFile Objects  (2006-08-24)
       http://python.org/sf/1545836  closed by  gbrandl

PyString_FromString() clarification  (2006-08-24)
       http://python.org/sf/1546052  closed by  gbrandl

New / Reopened RFE
__________________

Better order in file type descriptions  (2006-09-27)
       http://python.org/sf/1566260  opened by  Daniele Varrazzo

poplib.py list interface  (2006-09-29)
       http://python.org/sf/1567948  opened by  Hasan Diwan



From claudio.grondi at freenet.de  Wed Sep 13 11:31:45 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Wed, 13 Sep 2006 17:31:45 +0200
Subject: Unit balancing
In-Reply-To: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
References: <1158158861.650896.294460@p79g2000cwp.googlegroups.com>
Message-ID: <ee9890$b75$1@newsreader2.netcologne.de>

AbrahamLincolnIllinois at yahoo.com wrote:
> Greetings!
> 
> I am working with a researcher who would be very happy if he could
> include units in his calculations.  Then, if his complicated expression
> didn't result in "kg/yr" the program would stop and point out his
> error.
> 
> Does Python (or SciPy or ..) offer this feature?
> 
> Thanks for your help.  
> 
> 
>                Abraham
> 
I mean I run one time already into a Python library or a class which was 
designed to handle such things as this request is common to many 
researcher.
Sorry, don't have any link at my fingertips or even an idea where to 
look after it, so Googling or waiting until someone else using such a 
tool posts here is all I can offer.

Inbetween Frink is maybe an option?
   http://futureboy.homeip.net/frinkdocs/

Claudio Grondi




From ilias at lazaridis.com  Sun Sep 17 12:22:16 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 17 Sep 2006 09:22:16 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
Message-ID: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>

I understand that I can use __metaclass__ to create a class which
modifies the behaviour of another class.

How can I add this metaclass to *all* classes in the system?

(In ruby I would alter the "Class" class)

.

http://lazaridis.com



From larry.bates at websafe.com  Mon Sep 11 10:02:20 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 11 Sep 2006 09:02:20 -0500
Subject: extracting substrings from a file
In-Reply-To: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>
References: <1157977756.841188.8550@p79g2000cwp.googlegroups.com>
Message-ID: <45056C6C.50900@websafe.com>

sofiafig at gmail.com wrote:
> Hi,
> 
> I have a file with several entries in the form:
> 
> AFFX-BioB-5_at	 E. coli  /GEN=bioB  /gb:J04423.1  NOTE=SIF
> corresponding to nucleotides 2032-2305 of /gb:J04423.1  DEF=E.coli
> 7,8-diamino-pelargonic acid (bioA), biotin synthetase (bioB),
> 7-keto-8-amino-pelargonic acid synthetase (bioF), bioC protein, and
> dethiobiotin synthetase (bioD), complete cds.
> 
> 1415785_a_at	 /gb:NM_009840.1 /DB_XREF=gi:6753327 /GEN=Cct8 /FEA=FLmRNA
> /CNT=482 /TID=Mm.17989.1 /TIER=FL+Stack /STK=281 /UG=Mm.17989 /LL=12469
> /DEF=Mus musculus chaperonin subunit 8 (theta) (Cct8), mRNA.
> /PROD=chaperonin subunit 8 (theta) /FL=/gb:NM_009840.1 /gb:BC009007.1
> 
> and I would like to create a file that has only the following:
> 
> AFFX-BioB-5_at  /GEN=bioB  /gb:J04423.1
> 
> 1415785_a_at	 /gb:NM_009840.1 /GEN=Cct8
> 
> Could anyone please tell me how can I do it?
> 
> Many thanks in advance
> Sofia
> 
What have your tried so far?

Hint: split line on spaces, the first pieces is the first item you want,
then iterate over the pieces looking for the /GEN and /gb: pieces that
you are interested in keeping.  I am assuming that /GEN= and /gb: data
doesn't have any spaces in them.  If they do, you will need to use
regular expressions instead of split.

-Larry Bates


From fredrik at pythonware.com  Fri Sep  1 02:08:37 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 01 Sep 2006 08:08:37 +0200
Subject: introspection
In-Reply-To: <ed8458$7od$1@solaris.cc.vt.edu>
References: <ed8458$7od$1@solaris.cc.vt.edu>
Message-ID: <ed8ip5$cba$2@sea.gmane.org>

brad tilley wrote:

> How do I import a module and then ask it to show me its methods or other 
> aspects about itself during execution? I'd like to do something such as 
> this:
> 
> import win32api

dir(win32api)
help(win32api)

and also

import inspect
help(inspect)

</F>



From timr at probo.com  Thu Sep  7 01:05:25 2006
From: timr at probo.com (Tim Roberts)
Date: Thu, 07 Sep 2006 05:05:25 GMT
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<44fe89d0$0$31634$626a54ce@news.free.fr>
Message-ID: <st9vf2h69gfogvo0k3tk8ednpf3t0ogm3v@4ax.com>

Bruno Desthuilliers <onurb at xiludom.gro> wrote:
>
>mensanator at aol.com wrote:
>(snip)
>> But shouldn't a significant feature like that be explained
>> in the Python manuals? 
>
>Why should it ? It's a SQLite feature, not a Python one.

You have missed the key point that, as of Python 2.5, SQLite 3 is part of
the Python 2.5 standard library.  So, at this point, it IS a Python
feature.

>> I don't mind living with it as long as it's documented.
>
>It is. In SQLite manual. Or do you hope the Python manual to also fully
>document PostgreSQL, MySQL, Oracle, Apache, Posix, Win32 etc ?

Warning: misplaced sarcasm detected....
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From casevh at comcast.net  Fri Sep  1 08:46:26 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 1 Sep 2006 05:46:26 -0700
Subject: ANN: GMPY binaries for Python 2.5
In-Reply-To: <pan.2006.09.01.08.09.20.737216@gmx.net>
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
	<pan.2006.09.01.08.09.20.737216@gmx.net>
Message-ID: <1157114786.363769.312560@i42g2000cwa.googlegroups.com>

Marc 'BlackJack' Rintsch wrote:

> Interesting subject line.  I think I still have a set of "Win 3.11 for
> workgroups" disks lying around somewhere, but where do I get Windows 2.5? ;-)
>
> SCNR,
> 	Marc 'BlackJack' Rintsch

I've changed the subject line to read "Python 2.5" instead of "Windows
2.5".

Wasn't Windows 2.5 the result of running Windows 3.11 on a 386sx
processor? ;-)

Thanks for stirring up old memories. I wonder where my 3.11 disks are?

casevh



From bradfordh at gmail.com  Thu Sep  7 14:32:33 2006
From: bradfordh at gmail.com (Tempo)
Date: 7 Sep 2006 11:32:33 -0700
Subject: Extracting text from a string
Message-ID: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>

Hello. I am having a little trouble extracting text from a string. The
string that I am dealing with is pasted below, and I want to extract
the prices that are contained in the string below. Thanks in advanced
for any and all help. Thank you.



<span class="sale">
					$14.99
				</span>, <span class="sale">
					$27.99
				</span>, <span class="sale">
					$66.99
				</span>, <span class="sale">
					$129.99
				</span>, <span class="sale">
					$254.99
			</span>



From cfbolz at gmx.de  Fri Sep 29 08:36:04 2006
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Fri, 29 Sep 2006 14:36:04 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <451CD389.3010800@jessikat.plus.net>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<451CD389.3010800@jessikat.plus.net>
Message-ID: <451D1334.50909@gmx.de>

Robin Becker wrote:
> Larry Hastings wrote:
> ______
>> THE PATCH
>>
>> The core concept: adding two strings together no longer returns a pure
>> "string" object.  Instead, it returns a "string concatenation" object
>> which holds references to the two strings but does not actually
>> concatenate
>> them... yet.  The strings are concatenated only when someone requests
>> the
>> string's value, at which point it allocates all the space it needs and
>> renders the concatenated string all at once.
>>
>> More to the point, if you add multiple strings together (a + b + c),
>> it *doesn't* compute the intermediate strings (a + b).
>>
>> Upsides to this approach:
> ........
>
> wouldn't this approach apply to other additions eg list+list seq+seq etc
> etc.

no, I think it depends on strings being immutable. If you do list1 +
list2 that way and list1 is mutated then the resulting list would be
changed too.

> I suppose the utility of such an approach depends on the frequency with
> which multiple strings/lists/sequences etc are added together in real
code.

I think there are quite a lot of string additions around, it's just that
people get told to use join all the time, so they are not written using "+".

Cheers,

Carl Friedrich



From george.sakkis at gmail.com  Fri Sep 29 21:57:20 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 29 Sep 2006 18:57:20 -0700
Subject: Automatic methods in new-style classes
References: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
	<1159568589.977941.182440@m73g2000cwd.googlegroups.com>
Message-ID: <1159581440.478691.147160@m7g2000cwm.googlegroups.com>

Ben Cartwright wrote:

> bertgoos at yahoo.com wrote:
> > Hey, I have the following code that has to send every command it
> > receives to a list of backends.
> <snip>
> > I would like to write each method like:
> >
> >     flush = multimethod()
>
> Here's one way, using a metaclass:

Or if you don't mind a more verbose API, you may use a decorator
instead:

# comment out if version<2.5
from functools import wraps

def do_forall(attr):
    def deco(func):
        f_name = func.__name__
        @wraps(func) # comment out if version<2.5
        def wrapper(self,*args,**kwds):
            for b in getattr(self,attr):
                getattr(b,f_name)(*args,**kwds)
        return wrapper
    return deco

#====== Example =================================

class Foo(object):
    def flush(self): print "Foo.flush"
    def draw(self, x, y): print "Foo.draw(%s,%s)" % (x,y)

class Bar(object):
    def flush(self): print "Bar.flush"
    def draw(self, x, y): print "Bar.draw(%s,%s)" % (x,y)


forall_backends = do_forall('backends')

class MultiBackend(object):
    """Renders to multiple backends"""

    def __init__(self, backends):
        self.backends = backends

    @forall_backends
    def flush(self):
        'Flush all backends'

    @forall_backends
    def draw(self, x, y):
        'Draw point (x,y) on all backends'


m = MultiBackend([Foo(),Bar()])
m.flush()
m.draw(1,2)

#======================================

HTH,
George



From fredrik at pythonware.com  Sun Sep 24 04:38:36 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 10:38:36 +0200
Subject: A critique of cgi.escape
In-Reply-To: <ef4d44$8h4$2@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>
	<ef4d44$8h4$2@lust.ihug.co.nz>
Message-ID: <ef5g6c$9lh$3@sea.gmane.org>

Lawrence D'Oliveiro wrote:

> What works for attributes also works for ordinary text.

attributes and ordinary text are two different things in HTML and XML. 
you're arguing that it's a good idea for *everyone* to bloat down 
ordinary text just because you're too lazy to use a piece of code in the 
intended way.

</F>



From reply at group.invalid  Mon Sep 25 13:24:07 2006
From: reply at group.invalid (Pom)
Date: Mon, 25 Sep 2006 17:24:07 GMT
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <mailman.582.1159202286.10491.python-list@python.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<mailman.582.1159202286.10491.python-list@python.org>
Message-ID: <XgURg.95723$F61.1297455@phobos.telenet-ops.be>

Fredrik Lundh wrote:
> if you care about performance, and is using a recent Python, you could 
yes i do ;-)

> try doing
> 
>    d1 = dict((row[0], row[1:]) for row in z1)
> 
> instead, and see if that runs faster (this uses a generator expression 
> instead of a callback and a full list).
> 
> </F>
> 

I changed it and it saves me some time so I leave it like that!

with 100000 test records:
 >>>
dict+map (1, 2, 3) -> {1: (2, 3)}: 1.343 seconds.
dict+gen-expr (1, 2, 3) -> {1: (2, 3)}: 0.861 seconds.
 >>>
dict+map (1, 2, 3) -> {1: (2, 3)}: 1.397 seconds.
dict+gen-expr (1, 2, 3) -> {1: (2, 3)}: 0.943 seconds.

with 500000 test records:
 >>>
dict+map (1, 2, 3) -> {1: (2, 3)}: 13.297 seconds.
dict+gen-expr (1, 2, 3) -> {1: (2, 3)}: 8.335 seconds.
 >>>
dict+map (1, 2, 3) -> {1: (2, 3)}: 14.548 seconds.
dict+gen-expr (1, 2, 3) -> {1: (2, 3)}: 9.793 seconds.
 >>>


thank you!!


From pmcgover at gmail.com  Sat Sep 23 09:04:16 2006
From: pmcgover at gmail.com (pmcgover at gmail.com)
Date: 23 Sep 2006 06:04:16 -0700
Subject: Converting Perl Web Report to Python
Message-ID: <1159016655.956844.27090@d34g2000cwd.googlegroups.com>

I enjoyed Paul Barry's September article in Linux Journal entitled,
"Web Reporting with MySQL, CSS and Perl".  It provides a simple,
elegant way to use HTML to display database content without any sql
markup in the cgi script.  The cgi script simply calls the Mysql
command line with the HTML option (-H) and the SQL script file directed
to that command.  This provides complete separation of the markup from
the sql code.  The plain vanila HTML output can be spruced up with CSS
to provide more color and size control of the HTML.

Could this script be easily converted to Python?  How would you execute
the Msql command line and direct the output to a variable for display
in the cgi script?  Would it be possible to easily enhance this script
by allowing the user to pass in an SQL query parameter to the sql
script?  I attempted this in Perl by substituting the string "p_1" in
the where clause of the sql code but I could not substitute this string
with the value in the cgi code (ie. $query =~ s/p_1/value_variable/;).
Perhaps it would be easier in Python?

Also, would the user supplied parameter be a security issue?
Thanks!

Below is a link to the article:
http://delivery.acm.org/10.1145/1160000/1152907/8281.html?key1=1152907&key2=9804109511&coll=ACM&dl=ACM&CFID=15151515&CFTOKEN=6184618



From fredrik at pythonware.com  Thu Sep 28 11:02:20 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 17:02:20 +0200
Subject: Python and Win95B
In-Reply-To: <005201c6e2f2$510ff0c0$5be94c51@default>
References: <005201c6e2f2$510ff0c0$5be94c51@default>
Message-ID: <efgo5r$7c2$1@sea.gmane.org>

Ciar?n ? Duibh?n wrote:

> I've just installed Python 2.5 under Win95B, and when run it says "The
> PYTHON25.DLL file is linked to missing export
> KERNEL32.DLL.GetFileAttributesExA".
> 
> Does Python 2.5 not run under Win95?  If not, is there an earlier version of
> Python which does?

Windows 95 was end-of-lifed by Microsoft five years ago:

     http://www.microsoft.com/windows/lifecycle/default.mspx

I'm not sure that the last version that was officially tested with 
Windows 95 was, but Python 2.3 might work.

</F>



From steve at holdenweb.com  Wed Sep 20 15:47:47 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 15:47:47 -0400
Subject: Do we need to delete "ImageDraw.Draw" after using it?
In-Reply-To: <1158773966.613009.11470@e3g2000cwe.googlegroups.com>
References: <1158773966.613009.11470@e3g2000cwe.googlegroups.com>
Message-ID: <ees5rj$gkr$1@sea.gmane.org>

Daniel Mark wrote:
> Hello all:
> 
> I am looking the sample code posted on PIL website
> http://www.pythonware.com/library/pil/handbook/imagedraw.htm
> 
> ################################################
> <<Draw a Grey Cross Over an Image>>
> 
> import Image, ImageDraw
> 
> im = Image.open("lena.pgm")
> 
> draw = ImageDraw.Draw(im)
> draw.line((0, 0) + im.size, fill=128)
> draw.line((0, im.size[1], im.size[0], 0), fill=128)
> del draw # ===>>>> Why we should delete this object draw?
> 
> # write to stdout
> im.save(sys.stdout, "PNG")
> #################################################
> 
> Is there any general rule that we must delete the object after using
> it?
> 
Just consider it good hygiene.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From casioculture at gmail.com  Sat Sep  2 04:26:39 2006
From: casioculture at gmail.com (casioculture at gmail.com)
Date: 2 Sep 2006 01:26:39 -0700
Subject: IndentationError: expected an indented block
In-Reply-To: <mailman.10280.1157184700.27775.python-list@python.org>
References: <1157170194.270363.67430@h48g2000cwc.googlegroups.com>
	<mailman.10280.1157184700.27775.python-list@python.org>
Message-ID: <1157185599.404098.70620@p79g2000cwp.googlegroups.com>


Hendrik van Rooyen wrote:
> <casioculture at gmail.com> Wrote:
>
>
> |
> | Haha. How can I fix this!
> |
> |
> |
>
> Use either tabs, or spaces, but not both....
>
> - Hendrik

Haha. I know. I just find it silly that a language insists on
indentation. I'd long known it but just was reminded of it when I
messed a little with the interpreter.



From bvdp at xplornet.com  Fri Sep  8 19:40:17 2006
From: bvdp at xplornet.com (bvdp at xplornet.com)
Date: 8 Sep 2006 16:40:17 -0700
Subject: convert loop to list comprehension
Message-ID: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>

Please help my poor brain :) Every time I try to do a list
comprehension I find I just don't comprehend ...

Anyway, I have the following bit of code:

seq = [2, 3, 1, 9]
tmp = []
for a in range(len(seq)):
        tmp.extend([a]*seq[a])

which correctly returns:

[0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]

Question is, can I do this as a list comprehension?

Thanks!



From sjmachin at lexicon.net  Sun Sep  3 19:50:20 2006
From: sjmachin at lexicon.net (John Machin)
Date: 3 Sep 2006 16:50:20 -0700
Subject: FYI: getting data from an OpenOffice.org spreadsheet
References: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
	<1157322088.590298.192560@h48g2000cwc.googlegroups.com>
	<slrnefmm9q.egf.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1157327419.961338.229230@m73g2000cwd.googlegroups.com>

Sybren Stuvel wrote:
> John Machin enlightened us with:
> > Suppose one has over a hundred spreadsheets (real-life example:
> > budgets from an organisation's reporting centres) ... manually
> > opening each in OOo Calc is less than appealing, and not very
> > robust.
>
> True. There are functions that can load files as well. Combined with
> the glob module, this could automatically handle all files in a
> certain directory.
>
> > With the 2nd example (alf's question: copy OOo Calc file to Excel
> > xls file), I don't see any advantage at all over the manual
> > procedure (1) start OOo Calc (2) open Calc file (3) File > Save As >
> > select Microsoft Excel 97 etc format > ... what am I missing? Your
> > solution requires (1) edit script to change name of output file;
> > save script (where?) (2) start OOo Calc with magic-spell on the
> > command line (3) open calc file (4) run script.
>
> It's just a demonstration of the file saving process. Indeed, the
> saving not all that useful, but someone requested it and I wrote it.

Other possible responses: (1) suggest the obvious(?)
less-labour-intensive no-script method (2) show how to automate it
robustly.

>
> > How does one write a script that can be in control e.g. script
> > starts OOo (if necessary),
>
> That's easily done with a system call or the subprocess or popen2
> modules.
>
> > and extracts some data from all spreadsheet files in a given
> > directory (while one is at lunch)?
>
> Just add a few lines to load the file instead of picking the currently
> opened one. Do you want me to do more digging and extend the code? I'm
> willing to do that, but only if it makes you happy :)

Firstly, let me say that you are highly commended for wading so far
into the OOo docs and producing two pieces of code that actually do
something. I've opened up the docs two or three times, said "Waaahht
the ...." and closed them rapidly.

I don't "want" you to do anything. However the interests of
evangelising/spreading the use of OOo software might be advanced were
you to go the extra step or two and post a recipe for simple data
extraction from a named file, rather than the currently open file. Add
a few hints like what are the types of the data that you get back
(especially how dates are distinguished from numbers, if at all) and
you'll be a hero :-)

Cheers,
John



From MonkeeSage at gmail.com  Sat Sep 23 08:24:31 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 05:24:31 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net>
	<1158959361.458232.278660@h48g2000cwc.googlegroups.com>
	<ef37tf$5hj$4@lust.ihug.co.nz>
Message-ID: <1159014271.576863.199290@h48g2000cwc.googlegroups.com>

Lawrence D'Oliveiro wrote:
> In message <1158959361.458232.278660 at h48g2000cwc.googlegroups.com>,
> MonkeeSage wrote:
>
> > I don't really see anything wrong with creating a custom class for
> > evaluating those kinds of logical statements. It does make the code for
> > statements more concise and easy to follow (with less binding
> > ambiguity).
>
> Why not express everything in Conjunctive Normal Form?

Because: (?Can add all the literal operators ? Already existed a
concise/unambiguous mechanism for all but negation) ? Used existing
scheme but added concise/unambiguous negation mechanism.

Regards,
Jordan



From matt at tplus1.com  Tue Sep 12 10:53:28 2006
From: matt at tplus1.com (Matthew Wilson)
Date: Tue, 12 Sep 2006 14:53:28 GMT
Subject: Code to add docstrings to classes
References: <slrnegdcem.epp.matt@mwilson.umlcoop.net>
	<slrnegdfne.13s.horpner@FIAD06.norwich.edu>
Message-ID: <slrnegdif8.fbk.matt@mwilson.umlcoop.net>

On Tue 12 Sep 2006 10:06:27 AM EDT, Neil Cerutti wrote:
> Writing a thin wrapper around the dictionary might be beneficial,
> and would also furnish a place for the docstrings. 

I wrote a function that hopefully does just that.  I'm not very savvy at
doing this class-factory stuff, so any advice would be welcome.

def vd(C):

    """

    Return a subclass of class C that has a instance-level attribute _vardoc.

    """

    class VDC(C):

        def __init__(self, *args, **kwargs):

            vardoc = kwargs.get('vardoc')
            if vardoc:
                assert isinstance(vardoc, str), "vardoc must be a
string!"
                kwargs.pop('vardoc')
            self._vardoc = vardoc

            C.__init__(self, *args, **kwargs)

        def __repr__(self):

            if self._vardoc:
                return self._vardoc + "\n" + C.__repr__(self)

            else:
                return C.__repr__(self)

    return VDC


def test_vd():

    i = vd(int)(6)
    i._vardoc = "integer!"
    assert isinstance(i, int)

    d = vd(dict)(a=1, b=2, c=i, vardoc="dict!")
    assert d['a'] == 1
    assert d['c'] == 6
    assert isinstance(d, dict)



-- 
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles


From dbraden at invalid.add  Wed Sep 13 23:58:20 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 03:58:20 GMT
Subject: Newbie - ? get IDLE going on cygwin
In-Reply-To: <mailman.46.1158171607.10491.python-list@python.org>
References: <IdCNg.280$Ij.254@newssvr14.news.prodigy.com>	<1gqqkdklahpn0.1hl200qpcv2fg$.dlg@40tude.net>	<soQNg.750$TV3.195@newssvr21.news.prodigy.com>	<mailman.20.1158149440.10491.python-list@python.org>	<NwVNg.1338$7I1.1178@newssvr27.news.prodigy.net>
	<mailman.46.1158171607.10491.python-list@python.org>
Message-ID: <wr4Og.943$TV3.904@newssvr21.news.prodigy.com>

Jason Tishler wrote:
> Dave,
> 
> On Wed, Sep 13, 2006 at 03:33:01PM +0000, David J. Braden wrote:
>> I can now confirm that, yes, IDLE pops up w/o menus under cygwin.
> 
> You should be able to workaround this problem by executing idle with the
> "-n" option:
> 
>     $ idle -n
> 
> Jason
> 

Worked great. This "exercise" has also raised my comfort level with the 
whole endeavor. To get rebaseall going, I was told to install the 
*entire* cygwin package. Good time to paint a couple of rooms, clean the 
gutters, ... But that install, plus your last suggestion, have me 
further along, to be sure. I am really impressed by the number of tools 
out there that work with, or were developed specifically for, Python.

Regards,
DaveB - /not/ a professional programmer. Just a very well-trained nerd.


From jgodoy at gmail.com  Sat Sep 30 11:52:37 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 30 Sep 2006 12:52:37 -0300
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
	<Xns984EA6026426Aduncanbooth@127.0.0.1>
Message-ID: <873ba9xsfu.fsf@gmail.com>

Duncan Booth <duncan.booth at invalid.invalid> writes:

> Or you could make it even clearer by using a loop:

Oops.  Should have read your message before replying to Mirco.  But again,
since the OP didn't read the docs for string operations I tried the terse
approach so that he actually sees the correspondence from Perl to Python. 

Dictionaries (and hashes in Perl) are very powerful and solve very interesting
problems (specially when one is looking for something like a "case"
implementation in Python). 


-- 
Jorge Godoy      <jgodoy at gmail.com>


From t at toddh.net  Wed Sep 20 18:42:59 2006
From: t at toddh.net (Todd H.)
Date: 20 Sep 2006 17:42:59 -0500
Subject: Need some help here
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
Message-ID: <84y7se2m8c.fsf@ripco.com>

"Kareem840" <KareemOfweet840 at hotmail.com> writes:

> Hello. Unfortunately, I am in need of money to pay my credit card
> bills. If you could spare just $1, I would be grateful. I have a Paypal
> account. Kramer1260 at hotmail.com. I swear this will go to my card
> balances. Thank you.

If you have a story of unusual personal hardship that led to the
balances, share it--you may get more response.  

If you're just a usual idiot without the discipline to live within
their their means, get a job, or if you have one, get a better one and
dig yourself out of the whole you've created for yourself.  Otherwise,
we'd all just be enabling you to be an idiot again, we'd all be a
dollar poorer, and you'd be no wiser--just with a better credit score
for a time.

If you're just seeing how many folks will give you money without any
good reason (i.e. not a scam, just an internet beggar), hey, enjoy. 

If you're a clever sociology graduate student doing a pootentially
interesting thesis on various responses to an anonymous plea for money
on the internet, kudos.  I bet it'd be an interesting study.

Best Regards, 
--
Todd H.  
http://www.toddh.net/


From altemurbugra at gmail.com  Mon Sep 25 19:58:22 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 25 Sep 2006 16:58:22 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <1159225120.550605.220930@d34g2000cwd.googlegroups.com>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<1159222443.540807.232040@k70g2000cwa.googlegroups.com>
	<1159225120.550605.220930@d34g2000cwd.googlegroups.com>
Message-ID: <1159228701.795132.223800@d34g2000cwd.googlegroups.com>

Thank you very much for your explications. I dont mean a search engine.
for example a dictionary site for searching words.



From bvdp at xplornet.com  Fri Sep  8 20:40:09 2006
From: bvdp at xplornet.com (bvdp at xplornet.com)
Date: 8 Sep 2006 17:40:09 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
Message-ID: <1157762409.805195.231770@m73g2000cwd.googlegroups.com>

Paul Rubin wrote:
> bearophileHUGS at lycos.com writes:
> > print sum( ([i]*n for i,n in enumerate(seq)), [])
>
> Wow, I had no idea you could do that.  After all the discussion about
> summing strings, I'm astonished.

Me too ... despite what bearophile said, this is faster than the 2nd
example. Nearly as fast as the original loop :)



From aisaac0 at verizon.net  Mon Sep  4 09:38:38 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 04 Sep 2006 13:38:38 GMT
Subject: methods and functions, instances and classes
Message-ID: <y%VKg.3084$%k5.2240@trnddc08>

When I create an instance of a class,
are the class's functions *copied* to create the methods?
Or are method calls actually calls of the class's functions?

I am sure this is both obvious and FAQ,
but I did not find a clear answer
(e.g. here
http://docs.python.org/tut/node11.html#SECTION0011340000000000000000 ,
a lot turns on the meaning of 'equivalent'.)

Thank you,
Alan Isaac




From blair.houghton at gmail.com  Mon Sep 11 17:14:56 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 11 Sep 2006 14:14:56 -0700
Subject: best small database?
In-Reply-To: <poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
Message-ID: <1158009296.414226.305020@i42g2000cwa.googlegroups.com>


Larry Bates wrote:
> The filesystem is almost always the
> most efficient place to store files, not as blobs in a
> database.

I could get all theoretical about why that's not so in most cases,
but there are plenty of cases where it is so (especially when the
person doing the DB doesn't get the idea behind all filesystems,
which is that they are themselves simplified databases), so
I won't*.

In this case, the filesystem may be the best place to
do the work, because it's the cheapest to implement
and maintain.

--Blair

* - okay, I will

1.  Since the filesystem is a database, making accesses
to it after being directed there by a database means you're
using two database systems (and an intervening operating
system)  to do one thing.  Serious databases work from
disks with no filesystem to get rid of that extra layer entirely.
But there are benefits to having things in files reachable by
ordinary tools, and to having the OS mediating access to
the data, but you need to be sure you need those benefits
and can afford the overhead.  Academic in most cases,
including the one that started this thread.

2.  When using the filesystem as the database
you only get one kind of native association, and have to
use semantics in the directory and filenames to give you
hints as to the type stored at a particular location.  You get a
few pieces of accounting data (mod times, etc.) in the
directory listing, but can't associate anything else with
the file directly, at least not unless you create another
file that has the associated data in it, or stuff the extra
data in the file itself, but then that makes each file
a database...see where it goes?  Sometimes it's better
to come up with a schema you can extend rationally to
fit the problem you are trying to solve.

--Blair



From steve at holdenweb.com  Thu Sep 28 03:18:13 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 08:18:13 +0100
Subject: a query on sorting
In-Reply-To: <JCuSg.380$5o5.260@tornado.texas.rr.com>
References: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>	<mailman.796.1159357863.10491.python-list@python.org>
	<JCuSg.380$5o5.260@tornado.texas.rr.com>
Message-ID: <effsu2$582$1@sea.gmane.org>

Paul McGuire wrote:
> "Steve Holden" <steve at holdenweb.com> wrote in message 
> news:mailman.796.1159357863.10491.python-list at python.org...
> <snip>
> 
>   >>> [x for x in enumerate(a)]
> [(0, 9), (1, 4), (2, 3), (3, 5), (4, 2), (5, 6), (6, 7), (7, 1), (8, 2)]
> 
> 
> Just curious, Steve, but why do this list comprehension when:
> 
> list(enumerate(a))
> 
> works just as well?
> 
Dumb stupidity would account for that. Knowing that enumerate(a) was an 
iterator I simply used the first iterative context that came to mind. 
List is somewhat more effective.

> In the interests of beating a dead horse into the ground (metaphor-mixing?), 
> I looked at using map to one-line the OP's request, and found an interesting 
> inconsistency.
> 
> I tried using map(reversed, list(enumerate(a))), but got back a list of 
> iterators.  To create the list of tuples, I have to call the tuple 
> constructor on each one, as in:
> 
> map(tuple,map(reversed,list(enumerate(a))))
> 
> However, sorted returns a list, not a listsortediterator.  Why the 
> difference in these two builtins?
> 
Ask the developers. Beats me ...

> I guess you can beat a dead horse into the ground, but you can't make him 
> drink.
> 
I guess. Thanks for flogging this horse so effectively.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From lycka at carmen.se  Wed Sep 13 05:19:04 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 13 Sep 2006 11:19:04 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.380.1158086084.5279.python-list@python.org>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<mailman.380.1158086084.5279.python-list@python.org>
Message-ID: <ee8ie9$rk9$1@wake.carmen.se>

First of all, anyone with extensive experience in database systems
understand that validating and cleaning input is an unavoidable task.

Static typing can help identify some of the problems, but far from
all, and there is often data processing done before the data enters
the database, so it's often too late to do the cleaning at that time
anyway.

Once you are dealing with data within your system, it's a bug in the
software if data doesn't fulfill the intended constraints. Such
problems should be identified by unit tests.

Mike Owens wrote:
> Next, as far as transferring you data, you most likely have to resort
> to some delimited format, or INSERT statements, which is no different
> than any other database.

You can always write a Python script which reads from one
database, cleans up the data and inserts into another, one
row at a time. This isn't just a porting activity. I've written
a Python app that moved data from a DB2 mainframe production
database to DB2 testing database on Windows. It moved data
from a hierarchy of tables, starting in a given table, and
reading foreign keys from system tables (very slow in mainframe
DB2!) to figure out what data to bring from which tables.

Since the system used abstract keys and moved data to a populated
database, it had to generate new keys and adjust the foreign keys
in the dependent tables. It also had to work around bugs and
quirks in Windows NT, DB2 and ADODBAPI etc. These things are
relatively easy, but it's never trivial. There are always a lot
of details to deal with.

For big volumes, you typically need to use some kind of bulk
loading facility. Inserts are generally much too slow. (I'm
talking about general data porting woes here--in the case of
SQLite it's not likely that you have many million rows of data.)

Efficient bulk loading means that you have different data format
for different database systems, and also that you need to validate
your data before insertion, so the problems directly related to
SQLite doesn't seem very odd.


From sk at get.it.off.to.reply.z.pl  Thu Sep 28 12:24:45 2006
From: sk at get.it.off.to.reply.z.pl (Sebastian Kaliszewski)
Date: Thu, 28 Sep 2006 18:24:45 +0200
Subject: windev vs python SOS
In-Reply-To: <nXzSg.195$nn3.31@nntpserver.swip.net>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <efgrl8$8hg$1@bozon2.softax.pl>

st?phane bard wrote:
> hello, my boss ask me to prefer windev to python.
> I have to argue
> 
>  - python work on multiple platform (linux, mac, windows)
>     A good point but it didn't interest him. Because
>     we want to choose a language for prototyping.
>     So multi platform is not enough.
> 
>  - python and windev are fast to develop
> 
>  - windev as a good IDE, python? boa-constructor is ok with wxpython
> 
>  - python is open source (that's not an argument for my boss, sorry 
> it's     a boss ...)
> 
> any idea for a strong argument ?

Python is widely known and tested, windev is not. Stuff not widely used (and 
thus not well verified by Real World(tm)) is a Big Business Risk(tm). Things 
looking pretty on marketing presentations might show its ugly head in Real 
Life(tm) where Real Money(tm) is at stake (and in fact they do in vast 
majority of cases).

Python is widely known and has Good Track Record(tm). Windev has not.

Python is known to integrate well into Windows. Is your boss really sure 
that windev is good there? How about various corner cases?

Does your boss know about .net? Tell him about IronPython (If Microsoft 
thinks its good, why your boss should not?). If your boss thinks .net is 
crap and Java rules, tell him about Jython.

It's relatively easy to find (hire) Python programmers. It's not true in 
case of windev programmers. If your boss needs more people or some people 
leave (and thus must be replaced), it's a Real Cost(tm) to train new people 
new windev tricks. Is your boss willing to take the risk that new people 
will need 1-2 months to get fluent with windev (as he may well forget about 
hiring trained windev developer in a reasonable amount of time, while hiring 
trained python developer is possible).


rgds
-- 
Sebastian Kaliszewski


From phd at phd.pp.ru  Mon Sep 25 14:06:52 2006
From: phd at phd.pp.ru (Oleg Broytmann)
Date: Mon, 25 Sep 2006 22:06:52 +0400
Subject: SQLObject 0.7.1 final release
Message-ID: <20060925180652.GC6330@phd.pp.ru>

Hello!

I'm pleased to announce the 0.7.1 release of SQLObject.


What is SQLObject
=================

SQLObject is an object-relational mapper.  Your database tables are described
as classes, and rows are instances of those classes.  SQLObject is meant to be
easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB (also
known as SAPDB).


Where is SQLObject
==================

Site:
http://sqlobject.org

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.7.1

News and changes:
http://sqlobject.org/docs/News.html


What's New
==========

Features & Interface
--------------------

* Added support for psycopg2 and MSSQL.

* Added TimeCol.

* RelatedJoin and SQLRelatedJoin objects have a
  createRelatedTable keyword argument.

* Implemented RLIKE (regular expression LIKE).

Small Features
--------------

* Select over RelatedJoin.

* SQLite foreign keys.

* Postgres DB URIs with a non-default path to unix socket.

* Allow the use of foreign keys in selects.

* Implemented addColumn() for SQLite.

Bug Fixes
---------

* Fixed a longstanding problem with UnicodeCol - at last you can use unicode
  strings in .select() and .selectBy() queries. There are some limitations,
  though.

* Cull patch (clear cache).

* Synchronize main connection cache during transaction commit.

* Ordering joins with NULLs.

* Fixed bugs with plain/non-plain setters.


For a more complete list, please see the news:
http://sqlobject.org/docs/News.html

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.


From onurb at xiludom.gro  Thu Sep 28 10:29:42 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 16:29:42 +0200
Subject: startswith() and endswith() for re's would be more intuitive
In-Reply-To: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>
References: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>
Message-ID: <451bdc57$0$20520$626a54ce@news.free.fr>

metaperl wrote:
> I just finished answering a question in #python because someone tried
> to match using ... well.. match()
> but did not realize that match() is actually startswith() for regexps.

Yet someone else that failed to read the Fine Manual(tm).

> I suggest:
> re.compile('blah').atstartof(string)
> re.compile('blah').atendof(string)

What's wrong with:
re.search(r'^blah', somestring)
re.search(r'blah$', somestring)


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From bj_666 at gmx.net  Sun Sep 24 07:04:35 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sun, 24 Sep 2006 13:04:35 +0200
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
Message-ID: <pan.2006.09.24.11.04.35.54758@gmx.net>

In <ef5nop$aoh$1 at news01.versatel.de>, Ingo Linkweiler wrote:

> The script will be used as part auf a user registration page to avoid 
> dummy-inputs like "jsfhsadgfa at hdhjdfhjh.net"

The usual way to cope with this is sending out confirmation mails.  No
need to check if the address is syntactically correct beforehand.

Ciao,
	Marc 'BlackJack' Rintsch


From dbraden at invalid.add  Wed Sep 13 12:52:06 2006
From: dbraden at invalid.add (David J. Braden)
Date: Wed, 13 Sep 2006 16:52:06 GMT
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <x5WNg.1353$7I1.740@newssvr27.news.prodigy.net>
References: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>
	<mailman.411.1158115415.5279.python-list@python.org>
	<x5WNg.1353$7I1.740@newssvr27.news.prodigy.net>
Message-ID: <WGWNg.1370$7I1.1334@newssvr27.news.prodigy.net>

David J. Braden wrote:
> Travis E. Oliphant wrote:
>> Brendon Towle wrote:
>>> I need to simulate scenarios like the following: "You have a deck of  
>>> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,  
>>> replace it, and repeat N times."
>>>
>>
>> Thinking about the problem as drawing sample froms a discrete 
>> distribution defined by the population might help.
>>
>> For example, in SciPy you can define your own discrete random variable:
>>
>> var = scipy.stats.rv_discrete(name='sample', 
>> values=([0,1,2],[3/10.,5/10.,2/10.]))
>>
>> Then
>>
>> var.rvs(size=10000)
>>
>> would quickly return an array of "draws"
>>
>> If you didn't want to install SciPy, but were willing to install 
>> NumPy, then the crux of the algorithm is to generate an entire array 
>> of uniform random variables:  numpy.random.rand(count) and then map 
>> them through the inverse cumulative distribution function to generate 
>> your samples.  The inverse cumulative distribution function is just a 
>> series of steps whose width depends on the probablity distribution.
>>
>> Thus, the population defines the draw boundaries.  To make it easy, 
>> just multiply the uniform random number by the total number of cards 
>> and then the boundaries are on the integers of the number of each kind 
>> of card.
>>
>> Here is an implementation.  I find this version to be 2x - 5x faster 
>> depending on how many draws are used.
>>
>>
>> import numpy as N
>>
>> def randomDrawing_N(count, population):
>>     probs = [x[0] for x in population]
>>     res = [[0, item[1]] for item in population]
>>     nums = N.random.rand(count)
>>     cprobs = N.cumsum([0]+probs)
>>     nums *= cprobs[-1]
>>     for k, val in enumerate(probs):
>>         res[k][0] += ((nums > cprobs[k]) & (nums < cprobs[k+1])).sum()
>>     return res
>>
>>
>> -Travis Oliphant
>>
> 
> In response to what Travis and Simon wrote -
> (1) Where the heck can I find a description of scipy's stat functions? 
> Documentation on these seems sparse.
> 
> (2) How does one set up a good timer for Python as implemented for 
> Windows? (i.e., how can I make API calls to Windows from Python?)
> 
> Please bear with me, or not; I am /just/ starting off with Python.
> 
> Thanks,
> Dave Braden

Oops, or rather, duh.
Rereading Robert's post clarified for me where multinomial is, and that 
to get help I need to specify more than simply help(multinomial). 
Sheesh, I'm dim today.

My question re timing code stands.

TIA,
DaveB


From steve at holdenweb.com  Wed Sep 27 02:53:40 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 07:53:40 +0100
Subject: MySQLdb and mod_python issue
In-Reply-To: <7a01f6c00609262247w1b12f705j259357d4d6aaafa2@mail.gmail.com>
References: <7a01f6c00609262247w1b12f705j259357d4d6aaafa2@mail.gmail.com>
Message-ID: <efd741$gpe$1@sea.gmane.org>

Alvin Delagon wrote:
> I have a mod_python script that is always crash while connecting to 
> mysql server. Here's a dump of the apache error log:
> 
> [Wed Sep 27 13:27:42 2006] [notice] mod_python: (Re)importing module 
> 'test' with path set to '['/var/www/html/XBox2']'
> [Wed Sep 27 13:27:42 2006] [notice] child pid 27793 exit signal 
> Segmentation fault (11)
> 
> MySQLdb works well on the command line version of my application. Anyone 
> know how to fix this? It dies on the line where MySQLdb.connect () is 
> called. Thanks in advance.
> 
With an error like that it seems possible you've installed a mismatched 
version of MySQLdb on your web server. Servers are frequently not 
running the latest version of Python - did you just copy the extension 
fro your desktop machine to the server?

Your output implies that there's only one directory on the path - could 
it be that you've overwritten sys.path, making all Python modules invisible?

Other possibilities include a different server environment, but a 
segfault is a pretty serious indication of error, so I'd make sure 
everything is version matched before you look elsewhere.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From me at privacy.net  Mon Sep 18 21:27:12 2006
From: me at privacy.net (Dan Sommers)
Date: Mon, 18 Sep 2006 21:27:12 -0400
Subject: [OT] Re: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
Message-ID: <m2y7sgve6n.fsf_-_@unique.fqdn>

On 18 Sep 2006 14:38:12 -0700,
bearophileHUGS at lycos.com wrote:

> ...  There is another secondary advantage: the code inside a function
> runs faster (something related is true for C programs too). Usually
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> this isn't important, but for certain programs they can go 20%+
> faster.

Okay, I give up.

AFAIK, All C code must be inside a function, unless you count the
expressions in initializers.

So aside from certain CPU/MMU/OS/cache/etc. quirks, why would C code
inside a function run faster than C code outside a function?  Compiler
optimizations because of const and restrict keywords don't count.

And what other C code *isn't* inside a function?

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>
"I wish people would die in alphabetical order." -- My wife, the genealogist


From bussieremaillist at gmail.com  Tue Sep 12 06:24:17 2006
From: bussieremaillist at gmail.com (bussiere maillist)
Date: Tue, 12 Sep 2006 12:24:17 +0200
Subject: deprecated python 2.5
Message-ID: <8a8f62c80609120324q58af3098q27ca547784e8fc8a@mail.gmail.com>

DeprecationWarning: struct integer overflow masking is deprecated
  return struct.pack('>H', ~value)
 i didn't understand if someone have some explanation
and what uses instead.


From roy at panix.com  Tue Sep 26 20:05:52 2006
From: roy at panix.com (Roy Smith)
Date: Tue, 26 Sep 2006 20:05:52 -0400
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
Message-ID: <roy-055E4F.20055226092006@reader2.panix.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> wrote:
> If you're really trying to become a well-rounded computer professional 
> I'd recommend reasonable exposure to at least:
> 
> * C
> * A static functional language (ML, Haskell, etc)
> * Lisp or scheme Scheme
> * A static class-oriented language (Java, C++, etc)
> * A dynamic OO language (Python, ruby, smalltalk, etc)
> 
> and at least a brief look at, say, Forth and Prolog.

Interesting list.  Of those, I've done tons of C, just enough lisp to get 
the feel of it, lots of C++, and of course Python.  I've never done any 
functional stuff.  Just enough Forth to be able to say I'd done it (as long 
as you don't press me too hard on the exact definition of "done it").

I've also done a lot of serious Fortran.  Some SQL.  Some Java.  Perl when 
I'm forced into it.  PostScript (yes, it really is a programming language).  
Toyed with Ruby.

The point is, there's lots of languages.  If your goal is to make a career 
as a programmer, you will eventually end up learning lots of languages.  
Each one will teach you something and make you a better programmer.  Some 
will pay the bills.  Every few years there will be a new hot toy that comes 
along that you'll want to learn.  These days, I'd guess that would be Ruby 
and/or D.  Five years from now, it'll be something none of us have ever 
heard of because it hasn't been invented yet.

At one point, I thought I was cool and marketable because I knew C (the hot 
new toy of the 80's).  If I never progressed past that, today I'd be asking 
people if they'd like fries with their burger.


From sxn02 at yahoo.com  Fri Sep 22 11:07:42 2006
From: sxn02 at yahoo.com (Sorin Schwimmer)
Date: Fri, 22 Sep 2006 08:07:42 -0700 (PDT)
Subject: overrideredirect and Text widget
Message-ID: <20060922150742.56869.qmail@web56010.mail.re3.yahoo.com>

Hi again,

Last afternoon I posted a question regarding the loss of keyboard in an undecorated window. Last night I tried again, at home, and the same code worked fine. The difference: it failed under (Gentoo) Linux, it succeeded under Win 2000, both running Python 2.4.x.

So, I guess, my question now is how to achieve the desired behaviour under Linux?

Thanks for your advice,
Sorin



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From sjmachin at lexicon.net  Mon Sep 25 20:24:53 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 17:24:53 -0700
Subject: Printing a percent sign
In-Reply-To: <1159217483.513555.126120@e3g2000cwe.googlegroups.com>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
Message-ID: <1159230293.270822.50390@d34g2000cwd.googlegroups.com>


stephen at theboulets.net wrote:
> Thanks -- a percent escapes itself when using %-formatting.
>
> Stephen
>
> step... at theboulets.net wrote:
> > Hi all. How do I escape the "%" sign in a print statement so that it
> > prints? Thanks.
> >

The following methods of getting answers to problems can be handy if
it's non-peak hours on the net or your internet connection is
broken/slow :

1. Reasoning: How do you get a literal "'" into an SQL string constant?
How do you get a literal "\" into a Python string constant? How do you
get a literal "$" into some *x shell command lines? Do you detect a
pattern?

2. Inspecting the documentation: in this case, it says:
"""% <tab> No argument is converted, results in a "%" character in the
result. """
If that is not sufficiently clear, can you suggest how it might be
improved?

HTH generally,
John



From deets at nospam.web.de  Sun Sep 10 17:17:14 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 10 Sep 2006 23:17:14 +0200
Subject: Unicode / cx_Oracle problem
In-Reply-To: <8ce8g29hsh0qefore6psbbrmifiai1vt34@4ax.com>
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
	<rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
	<4mi503F63uluU1@uni-berlin.de>
	<8ce8g29hsh0qefore6psbbrmifiai1vt34@4ax.com>
Message-ID: <4mjdmsF6g7f2U1@uni-berlin.de>

> Value of the variable 'id' is  u'\ufeff'
> Value of the variable 'mean' is  u'('

So they both are unicode objects - as I presumed.


> It's very hard to figure out what to do on the basis of complexities
> on the order of
> 
> http://download-east.oracle.com/docs/cd/B25329_01/doc/appdev.102/b25108/xedev_global.htm#sthref1042
> 
> (tiny equivalent http://tinyurl.com/fnc54

Yes, that is somewhat intimidating.

> But I'm not even sure I got that far. My problems so far seem prior:
> in Python or Python's cx_Oracle driver. To be candid, I'm very tempted
> at this point to abandon the Python effort and revert to an all-ucs2
> environment, much as I dislike Java and C#'s complexities and the poor
> support available for all-Java databases.

That actually doesn't help you much I guess - just because JDBC will 
convert java's unicode strings to byte strings behind the curtains, you 
will lose all encoding information nonetheless - especially if the DB 
itself isn't running an encoding that will allow for all possible 
unicode characters to be represented.

>> Then you need to encode the unicode string before passing it - something 
>> like this:
>>
>> mean = mean.encode("latin1")
> 
> I don't see how the Chinese characters embedded in the English text
> will carry over if I do that.

Me neither, but how could I have foreseen that? So use something else 
instead - utf-8 for example, or whatever the oracle connection will grok.

I think you should read up on what unicode and encodings are, and how 
they work in python, and unfortunately how they do work in oracle. 
Because even if you use java - not understanding how things are 
connected will hit you in the neck at some point.

Diez


From codecraig at gmail.com  Tue Sep 26 11:14:22 2006
From: codecraig at gmail.com (abcd)
Date: 26 Sep 2006 08:14:22 -0700
Subject: Extend file type
Message-ID: <1159283661.937621.313690@d34g2000cwd.googlegroups.com>

I have a class which extends 'file' ....

class MyFile(file):
    def __init__(self, fname, mode='r'):
        file.__init__(self, fname, mode)

    def write(self, str):
        print "writing a string"
        file.write(self, str)

    def writelines(self, lines):
        print "writing lines"
        file.writelines(self, lines)

I use this with subprocess....

f = MyFile('out.txt', 'w')
p = subprocess.Popen(cmd, stdout=f)

....and I can see that stuff goes into out.txt.....however, I never see
"writing a string" or "writing lines" from the class MyFile.

Any ideas what methods the stdout (and I guess stderr) of Popen objects
from subprocess call?

Any suggestions on how to find out?  I did try adding to MyFile....

def __call__(self, *args):
    print "calling:", args
    return file.__call__(self, *args)


but I never see that either.

thanks



From fredrik at pythonware.com  Tue Sep 12 12:54:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 18:54:33 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158078076.198865.6690@e63g2000cwd.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
Message-ID: <ee6oo9$e4m$1@sea.gmane.org>

Paul Boddie wrote:

> To be fair, that text originates in section 12.3, referring to input
> parameters to procedures.

which is the section that section 4.1 ("data types") refers to for more 
details on mappings between host data and SQL data.  guess it depends on 
how you look at the different layers: if you're using SQLite via the DB-
API, are you using "SQL" or an "SQL Agent"?

</F>



From danielmarkhot at gmail.com  Mon Sep 18 18:43:31 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 18 Sep 2006 15:43:31 -0700
Subject: How to efficiently proceed addition and subtraction in python list?
Message-ID: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>

Hello all:

I have a list AAA = [1, 2, 3] and would like to subtract one from list
AAA
so AAA' = [0, 1, 2]

What should I do?


Thank you
-Daniel



From fccoelho at gmail.com  Fri Sep  8 07:57:44 2006
From: fccoelho at gmail.com (Flavio)
Date: 8 Sep 2006 04:57:44 -0700
Subject: xmingw and f2py
In-Reply-To: <slrneg2h90.d48.nick@irishsea.home.craig-wood.com>
References: <1157642251.624034.85430@h48g2000cwc.googlegroups.com>
	<slrneg2h90.d48.nick@irishsea.home.craig-wood.com>
Message-ID: <1157716664.857936.174760@i42g2000cwa.googlegroups.com>

Hi Nick,

I followed the steps you describe exactly and I am still gettin this
error message when i try to compile.

here is the command I give:

f2py -c --compiler=/opt/xmingw/bin/i386-mingw32msvc-gcc
--f77exec=opt/xmingw/bi
n/i386-mingw32msvc-g77 -L /opt/xmingw/i386-mingw32msvc/lib/ -lpython2.4
-m flib flib.f

and this is the error:

copying
/usr/lib/python2.4/site-packages/numpy-1.0b5-py2.4-linux-i686.egg/numpy/f2py/src/fortranobject.c
-> /tmp/tmpIkxhAr/src.linux-i686-2.4
copying
/usr/lib/python2.4/site-packages/numpy-1.0b5-py2.4-linux-i686.egg/numpy/f2py/src/fortranobject.h
-> /tmp/tmpIkxhAr/src.linux-i686-2.4
  adding '/tmp/tmpIkxhAr/src.linux-i686-2.4/flib-f2pywrappers.f' to
sources.
running build_ext
error: don't know how to compile C/C++ code on platform 'posix' with
'/opt/xmingw/bin/i386-mingw32msvc-gcc' compiler

any further suggestions?

Nick Craig-Wood wrote:
> Flavio <fccoelho at gmail.com> wrote:
> >  has anyone tried to build extensions for win32 on Linux using
> >  xmingw?
>
> I don't know about xmingw, but we use mingw on linux to compile stuff
> for windows all the time.  (We use the mingw package under debian)
>
> We build extensions using mingw but linked to the link library of the
> official python2.4 build.
>
> Here are some instructions which you'll need to adapt to your setup
>
> /misc/windows is a smb mounted windows machine
>
> # Linking with the distributed python
> #
> # http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/software/python/cygwin.html
> #
> # On a windows machine
> # install the latest windows python (2.4.3.msi) from www.python.org
> # Copy the header files into the mingw installation
> cp -av /misc/windows/Python24/include /usr/i586-mingw32msvc/include/python2.4
> # Download pexports from here
> # http://www.emmestech.com/software/cygwin/pexports-0.43/download_pexports.html
> # unpack pexports.exe
> unzip pexports-0.43.zip
> # Fetch python dll from the windows machine
> cp -av /misc/windows/WINNT/system32/python24.dll .
> # Extract the exported symbols
> wine pexports python24.dll > python24.def
> # Create the link library
> /usr/i586-mingw32msvc/bin/dlltool --dllname python24.dll --def python24.def --output-lib libpython2.4.a
> # Move the files into the correct place
> mv -i python24.dll python24.def libpython2.4.a /usr/i586-mingw32msvc/lib/
>
> After that lot you can build python extensions with mingw under linux,
> using -lpython2.4
>
> --
> Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick



From deets at nospam.web.de  Wed Sep 13 06:23:33 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 13 Sep 2006 12:23:33 +0200
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
Message-ID: <4mq4h5F76akiU1@uni-berlin.de>

>> Exactly how am I supposed to use my text editor to make words bold? Is
>> every text editor supposed to understand a "python format" for code?
> 
> The standard answer here to people complaining about their editor not
> working well with python is that they should use a better editor.

In general, that is true for the 21st century. But under certain
circumstances, one might be forced to use a vi over a limited b/w terminal
to fix that goddamn bug on the live system.

Even though you don't care about the pesky details, it boils down to
introducing an escape mechanism that will surround whatever identifiers
there are. Which looks crap in anything except and python-aware editor. 

But I bet you don't work with e.g. subversion to display diffs and the
like...

Diez


From gregpinero at gmail.com  Sat Sep 30 21:32:57 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Sat, 30 Sep 2006 21:32:57 -0400
Subject: How to Catch 2 Exceptions at once?
Message-ID: <312cfe2b0609301832q6be77943n2b32494226ccd42d@mail.gmail.com>

How can I catch 2 exceptions at once for example:

        try:
            self.gses = opener.open(req)
        except (urllib2.HTTPError,urllib2.URLError):
            do something..

Seems to work, but how do I also get information about the error?

-- 
Gregory Pi?ero
Chief Innovation Officer
Blended Technologies
(www.blendedtechnologies.com)


From http  Sun Sep 17 11:20:00 2006
From: http (Paul Rubin)
Date: 17 Sep 2006 08:20:00 -0700
Subject: mp3 file length in time
References: <1158505736.188862.223640@h48g2000cwc.googlegroups.com>
Message-ID: <7xsliqjza7.fsf@ruckus.brouhaha.com>

"Jay" <jaysherby at gmail.com> writes:
> In python, I know there are a couple of modules for getting id3 info,
> but what about the length of an mp3 file in time?  Is there a way to
> aquire that info?  Most of my MP3s don't have id3 tags.  I don't care
> for them.  But I need to use python to get their file lengths.  How?

You have to count the frames.  Lots of mp3 files use variable bit
rates, so you can't go by the file length.


From flupke at nonexistingdomain.com  Tue Sep 26 10:42:39 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Tue, 26 Sep 2006 14:42:39 GMT
Subject: odbc DbiDate date conversion
In-Reply-To: <1159278687.772964.245190@b28g2000cwb.googlegroups.com>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
	<1159278687.772964.245190@b28g2000cwb.googlegroups.com>
Message-ID: <z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>

Frank Millman schreef:
> flupke wrote:
>> I'm using a solid DB and i'm accessing it via the odbc module
>> (activepython).
>> I get a DbiDate object returned but i don't find a way to decently print
>> it or get a format like %d/%m%/%y.
>>
> 
> I convert it to a datetime() instance, like this -
> 
>     mydate = datetime.datetime.fromtimestamp(int(dbidate))
> 
> Then I can use all the functionality of the datetime module.
> 
> HTH
> 
> Frank Millman
> 

Hi Frank,

i tried it and i end up with this:

>>> mydate = datetime.datetime.fromtimestamp(int(birthd))
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: timestamp out of range for platform localtime()/gmtime()
function

Regards,
Benedict


From garymok33 at gmail.com  Fri Sep  8 22:56:59 2006
From: garymok33 at gmail.com (GM)
Date: 8 Sep 2006 19:56:59 -0700
Subject: Problem on getting various character set from pop3.retr
Message-ID: <1157770619.880545.290740@m79g2000cwm.googlegroups.com>

Dear all,

The problem that I am facing now is that, when I use poplib to get a
email message with chinese character set like big5, the character
string is changed automatically to sth like =B8=D5=ACQ=AAM...the OS I
am using is red hat ES4 and the python version I am using is 2.3.4 (it
seems python 2.4 is not available for red hat). My application goal is
to receive the email and convert all character set to UTF-8 and then
store in file. So....long way to go for me, please give me some help
for that, thx~

Regards,

Gary



From sjmachin at lexicon.net  Wed Sep 20 18:04:47 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 15:04:47 -0700
Subject: unicode mystery/problem
In-Reply-To: <1158774055.273842.24200@m7g2000cwm.googlegroups.com>
References: <1158774055.273842.24200@m7g2000cwm.googlegroups.com>
Message-ID: <1158789886.997992.261940@i3g2000cwc.googlegroups.com>

Petr Jakes wrote:
> Hi,
> I am using Python 2.4.3 on Fedora Core4 and  "Eric3" Python IDE
> .
> Below mentioned code works fine in the Eric3 environment. While trying
> to start it from the command line, it returns:
>
> Traceback (most recent call last):
>   File "pokus_1.py", line 5, in ?
>     print str(a)
> UnicodeEncodeError: 'ascii' codec can't encode character u'\xc1' in
> position 6: ordinal not in range(128)

So print a works, but print str(a) crashes.

Instead, insert this:
   import sys
   print "default", sys.getdefaultencoding()
   print "stdout", sys.stdout.encoding
and run your script at the command line. It should print:
    default ascii
    stdout x
here, and crash at the later use of str(a).
Step 2: run your script under Eric3. It will print:
    default y
    stdout z
and then should work properly. It is probable that x == y == z ==
'utf-8'
Step 3: see below.

>
> ========== 8< =============
> #!/usr/bin python
> # -*- Encoding: utf_8 -*-

There is no UTF8-encoded text in this short test script. Is the above
encoding comment merely a carry-over from your real script, or do you
believe it is necessary or useful in this test script?

>
> a= u'DISKOV\xc1 POLE'
> print a
> print str(a)
> ========== 8< =============
>
> Even it looks strange, I have to use str(a) syntax even I know the "a"
> variable is a string.

Some concepts you need to understand:
(a) "a" is not a string, it is a reference to a string.
(b) It is a reference to a unicode object (an implementation of a
conceptual Unicode string) ...
(c) which must be distinguished from a str object, which represents a
conceptual string of bytes.
(d) str(a) is trying to produce a str object from a unicode object. Not
being told what encoding to use, it uses the default encoding
(typically ascii) and naturally this will crash if there are non-ascii
characters in the unicode object.

> I am trying to use ChartDirector for Python (charts for Python) and the
> method "layer.addDataSet()" needs above mentioned syntax otherwise it
> returns an Error.

Care to tell us which error???

>
> layer.addDataSet(data, colour, str(dataName))

The method presumably expects a str object (8-bit string). What does
its documentation say? Again, what error message do you get if you feed
it a unicode object with non-ascii characters?

[Step 3] For foo in set(['x', 'y', 'z']):
    Change str(dataName) to dataName.encode(foo). Change any debugging
display to use repr(a) instead of str(a). Test it with both Eric3 and
the command line.

[Aside: it's entirely possible that your problem will go away if you
remove the letter u from the line a= u'DISKOV\xc1 POLE' -- however if
you want to understand what is happening generally, I suggest you don't
do that]

HTH,
John



From larry.bates at websafe.com  Tue Sep 26 10:38:03 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 26 Sep 2006 09:38:03 -0500
Subject: ultra newbie question (don't laugh)
In-Reply-To: <TjaSg.26$1n3.125@news.tufts.edu>
References: <TjaSg.26$1n3.125@news.tufts.edu>
Message-ID: <45193B4B.4050804@websafe.com>

John Salerno wrote:
> Ok, I've decided to make a little project for myself which involves
> storing employee information in an XML file. I'm doing this partly to
> experiment with working with XML. The blocks in the file will look
> something like this:
> 
> <researcher id="salerjo01">
>   <first_name>John</first_name>
>   <last_name>Salerno</last_name>
>   <birth_country>United States</birth_country>
>   <birth_state>Texas</birth_state>
>   <birth_city>Houston</birth_city>
>   #etc.......
> <researcher>
> 
> I also plan to make a GUI frontend with wxPython for entering the
> records. This will be fairly easy, but not as fun as writing the logic.
> For now I've decided to focus just on writing the logic, and not worry
> about the GUI yet.
> 
> So this is what I came up with so far, then I sat staring at the screen
> wondering how to proceed:
> 
> class LabXMLWriter(object):
> 
>     def write_name(self, first, last, given=''):
> 
> Suddenly I realized I just have no idea how to start thinking about what
> I need to do. My first instinct was to use a class, as above, but then I
> wondered if that was even necessary, since all I need to do is get
> information from a user and write it to a file. Do I really need that
> information stored in an object?
> 
> Then I wondered if I needed an __init__ method, and what could go in it?
> Or should I just make separate methods for each bit of information to
> write to the file (i.e., name, birth location, address, phone number,
> etc.). I thought maybe I could create the ID in the __init__ method
> (salerjo01), but to do that I need the name first. I could do this:
> 
> def __init__(self, first_name, last_name, given_name=''):
>     # code to initialize name and create ID
> 
> But then I wondered if this detracts from the work that the class
> methods would do later.
> 
> So you see, what I'm asking for is very basic help, sort of along the
> lines of "what things do I need to consider before I even begin this?"
> Is OOP necessary here? Would utility functions work just as well for
> simply writing the information to a file?
> 
> Perhaps I should just take some kind of programming intro class! I read
> all these Python books, but when it comes time to write something
> non-trivial, I get stuck almost immediately with all the possibilities.
> 
> Thanks,
> John
On reason to use OOP is to insulate your main code from things like storage
backends or future changes you may decide to make.  What if you change your mind
and want to store the data into something other than XML? If you move all your
storage code into an object and have it do the writing/reading then you can
easily replace that object without disrupting your main program.  You could even
extend your program and allow someoneto store in CSV, database, or other storage
by adding additional storage objects.  I had a project where I was reading data
from CSV file.  Later in the implementation the client decided that the file
that was to be processed would be a .ZIP file instead of a plain-text CSV.
Because I had implemented a class to do the reading of all data from the CSV
file that had implemented an iterator, I was able to insert code to open .ZIP
file (using zipfile module), open a file inside the .ZIP and read using CSV
module from the zipped file without ever actually unzipping the file. I didn't
change any top level code and the change took a just a few minutes to implement.
 There was little chance of creating unintended problems and I was able to
easily support both the old unzipped CSV filesAND the new zipped files.  If I
had not isolated that code into a class, the changes would have been a LOT more
difficult.

It can also be nice to provide for future expansion by supporting additional
keyword arguments.  Something like:

def __init__(self, first_name, last_name, **kwargs):

Then process the kwargs for additional fields.  This way you can painlessly add
a field to your code by just specifying an additional keyword argument. If the
application is as simple as you describe it may not be worth the additional
effort.  Once you have done one of these it will become second nature to think
of creating/using objects in places where you want to  provide for maximum
flexibility and code isolation.

At a minimum you should take a look at the elementtree module for handling your
XML.  It is downloadable for Python < 2.5 and is part of the standard library
starting with version 2.5.

Hope information helps at least a little.

-Larry Bates


From g.brandl-nospam at gmx.net  Thu Sep  7 05:11:08 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 07 Sep 2006 11:11:08 +0200
Subject: CONSTRUCT -
In-Reply-To: <mailman.15.1157463576.5279.python-list@python.org>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>	<ede27d$pi9$1@news.albasani.net>	<1157299581.865287.225320@p79g2000cwp.googlegroups.com>	<edgpj6$vf1$1@news.albasani.net>	<1157462054.163916.57060@m73g2000cwd.googlegroups.com>
	<mailman.15.1157463576.5279.python-list@python.org>
Message-ID: <edonnc$ee0$1@news.albasani.net>

Steve Holden wrote:

>> I am not a (python) domain expert.
>> 
>> Thus I am asking here for available standard-solutions, before I
>> implement an own solution.
>> 
> There is no standard solution for the problem you mention.

Because it's not a problem for most people ;)

Georg


From claird at lairds.us  Sun Sep 17 20:31:12 2006
From: claird at lairds.us (Cameron Laird)
Date: Mon, 18 Sep 2006 00:31:12 +0000
Subject: tcl list to python list?
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
Message-ID: <gv51u3-4j4.ln1@lairds.us>

In article <1158459542.693284.98090 at h48g2000cwc.googlegroups.com>,
 <jerry.levan at gmail.com> wrote:
>Hi,
>
>I have a file that contains a "tcl" list stored as a string.  The list
>members are
>sql commands ex:
> { begin { select * from foo
>                where baz='whatever'}
>  {select * from gooble } end
>  { insert into bar values('Tom', 25) } }
>
>I would like to parse the tcl list into a python list...
>
>Any suggestions ( I am running Tkinter...)
			.
			.
			.
No correct solution's going to be as elegant as I suspect you imagine.
Here's an example of what's required:

  # If you try anything you suspect is simpler, you're going to have to
  # teach Python about Tcl treatment of whitespace, or teach Tcl how 
  # Python quotes, or ...
  
  import Tkinter
  tcl_list = """{ begin { select * from foo
                  where baz='whatever'}
    {select * from gooble } end
    { insert into bar values('Tom', 25) } }"""
  
      # Collect the Python list here.
  result = []
      # Create a single Tcl interpretive context for all the work.
  tk_instance = Tkinter.Tk().tk.eval
      # Everything Tcl returns is a string; make this value an integer.
  tcl_list_length = int(tk_instance(
             "set tcl_list %s; llength $tcl_list" % tcl_list))
  
      # With all the set-up done, simply loop over the elements.
  for counter in range(tcl_list_length):
          # Ask Tcl for each successive list item.
      result.append(tk_instance("lindex $tcl_list %d" % counter))
  
  print result

The output is 
  ['begin', " select * from foo\n                where baz='whatever'", 'select * from gooble ', 'end', " insert into bar values('Tom', 25) "]


From ldo at geek-central.gen.new_zealand  Tue Sep 26 20:40:31 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 12:40:31 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org><4517e10e$0$13929$edfadb0f@dread15.news.tele.dk><mailman.570.1159194107.10491.python-list@python.org>
	<efa7ff$pr2$2@lust.ihug.co.nz>
	<mailman.674.1159276196.10491.python-list@python.org>
Message-ID: <efch84$2cc$2@lust.ihug.co.nz>

In message <mailman.674.1159276196.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Lawrence D'Oliveiro wrote:
> 
>>> (cgi.escape(s, True) is slower than cgi.escape(s), for reasons that are
>>> obvious for anyone who's looked at the code).
>>
>> What you're doing is adding to the reasons why the existing cgi.escape
>> function is stupidly designed and implemented. The True case is by far
>> the most common
> 
> really?  most HTML attributes cannot even contain things that would need
> to be escaped...

Are you really serious about that?



From bdesth.quelquechose at free.quelquepart.fr  Tue Sep 26 15:22:33 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 26 Sep 2006 21:22:33 +0200
Subject: Splitting device addresses into parts
In-Reply-To: <efbn5h$ol2$03$1@news.t-online.com>
References: <efbl8h$kf2$03$1@news.t-online.com>
	<45195a2d$0$27565$626a54ce@news.free.fr>
	<efbn5h$ol2$03$1@news.t-online.com>
Message-ID: <45197a57$0$17791$626a54ce@news.free.fr>

Fabian Steiner a ?crit :
> Bruno Desthuilliers wrote:
> 
>>Fabian Steiner wrote:
>>
>>>I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
>>>need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
>>>simple way to achieve this? So far I am using regular expressions but I
>>>would like to avoid them ...
>>
>>devices = ["PCI:2:3.0", "PCI:3.4:0"]
>>for d in device:
>>  nums = tuple(map(int, d.split(':')[1:]))
>>  print "for ", d, " : ", nums
> 
> 
> Unfortunately, this doesn't work (even if I correct your typos) since
> the delimeter isn't necessary a colon - that's exactly the difficulty I
> am trying to solve.

Hmmm, yes, sorry - didn't took time to test, so I missed this point.


From steven.bethard at gmail.com  Thu Sep  7 17:48:41 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 07 Sep 2006 15:48:41 -0600
Subject: change property after inheritance
In-Reply-To: <1157642195.266630.177420@m73g2000cwd.googlegroups.com>
References: <V_ALg.10274$YZ3.7565@trnddc03>
	<mailman.82.1157557490.5279.python-list@python.org>
	<NcLLg.27806$CL6.8934@trnddc06>
	<6YSdneDAk40_gp3YnZ2dnUVZ_qqdnZ2d@comcast.com>
	<1157642195.266630.177420@m73g2000cwd.googlegroups.com>
Message-ID: <hdadnQvjMN8jDp3YnZ2dnUVZ_u-dnZ2d@comcast.com>

George Sakkis wrote:
> Steven Bethard wrote:
> 
>> David Isaac wrote:
>>> Le mercredi 06 septembre 2006 16:33,  Alan Isaac a ?crit :
>>>>> Suppose a class has properties and I want to change the
>>>>> setter in a derived class. If the base class is mine, I can do this:
>>>>> http://www.kylev.com/2004/10/13/fun-with-python-properties/
>>>>> Should I? (I.e., is that a good solution?)
>>> "Maric Michaud" <maric at aristote.info> wrote in message
>>> news:mailman.82.1157557490.5279.python-list at python.org...
>>>> Why not ? This ontroduce the notion of public getter a la C++/Java while
>>> the
>>>> property is overloadable by itself (as below), but it's correct design
>>> IMHO.
>>>
>>> More support for lambda, it seems...
>> Well, lambda's not going away[1], but there's no *need* for lambda here.
>>   It could be written as::
> 
> Sure, it *could*; whether it *should* is a different issue. I can't
> imagine a case for absolute *need* of lambda, but there are several
> cases where it is probably the best way, such as the one of this
> thread.

I'd contend that the "right" solution in this particular case is to use 
a descriptor that creates a property with late-binding lookup.  That way 
you don't even need the extra function call that the lambda is 
providing.  Try using one of the following recipies:

     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/408713
     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/442418

That's not to say that there aren't other situations where a lambda 
might be the best solution.

STeVe


From bj_666 at gmx.net  Wed Sep 20 02:46:35 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 20 Sep 2006 08:46:35 +0200
Subject: how to control file output encoding?
References: <mailman.307.1158727737.10491.python-list@python.org>
Message-ID: <pan.2006.09.20.06.46.35.535320@gmx.net>

In <mailman.307.1158727737.10491.python-list at python.org>, MaTianyi wrote:

> the encoding of  file that is output by the file.write() function  is
> always None.
> and the encoding attribute of the File Object is readonly.
> 
> f = open('abc.txt','w')
> print f.encoding
>>>> None
> 
> how can I change the file output encoding?

Use the `open()` function in the `codecs` module:

import codecs
f = codecs.open('abc.txt', 'w', 'utf-8')

Ciao,
	Marc 'BlackJack' Rintsch


From gagsl-py at yahoo.com.ar  Thu Sep 21 06:36:38 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 21 Sep 2006 07:36:38 -0300
Subject: Can I inherit member variables?
In-Reply-To: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060921070737.01f3aea0@yahoo.com.ar>

At Thursday 21/9/2006 06:52, lm401 at cam.ac.uk wrote:

>class animal:
>   def __init__(self, weight, colour):
>     self.weight = weight
>     self.colour = colour
>
>
>class bird(animal):
>   def __init__(self, wingspan):
>     self.wingspan = wingspan
>     print self.weight, self.colour, self.wingspan
>
>class fish(animal):
>   def __init__(self, length):
>     self.length = length
>     print self.weight, self.colour, self.length
>
>
>So basically I have a base class (animal) that has certain attributes.
>When animal is inherited by a specific instance, further attributes are
>added, but I need to have access to the original attributes (weight,
>colour). When I run my code from within the derived class, self.weight
>and self.colour are not  inherited (although methods are inherited as I
>would have expected).

You have to call the base __init__ too. If a bird is some kind of 
animal, it has a weight and a colour, and you have to provide them too:

class bird(animal):
   def __init__(self, weight, colour, wingspan):
     animal.__init__(self, weight, colour)
     self.wingspan = wingspan
     print self.weight, self.colour, self.wingspan

>It seems from reading the newsgroups that a solution might be to
>declare weight and colour as global variables in the class animal:

You can declare them as class attributes inside animal; this way they 
act like a default value for instance attributes.

class animal:
   weight = 0
   colour = ''
   ...

>I'm not very experienced with OOP techniques, so perhaps what I'm
>trying to do is not sensible. Does Python differ with regard to
>inheritance of member variables from C++ and Java?

They are not called "member variables" but "instance attributes". 
They *are* inherited [1] but you have to set their value somewhere. 
Any object can hold virtually any attribute - this is *not* usually 
determined by the object's class.
Base constructors ("initializer" actually) are *not* invoked 
automatically, so you must call them explicitely.

Read the Python Tutorial, it's easy and will teach you a lot of 
things about the language. You can read it online at 
<http://docs.python.org/tut/tut.html>

[1] kinda... remember that classes don't determine the available 
attributes; class attributes are inherited, and any attribute you set 
on an instance will be accessible by any method of the object, even 
above in the hierarchy.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From horpner at yahoo.com  Fri Sep 29 10:47:17 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 29 Sep 2006 16:47:17 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
	<mailman.918.1159509387.10491.python-list@python.org>
	<slrnehqb1f.130.horpner@FIAD06.norwich.edu>
	<efjb21$ri8$1@news.albasani.net>
Message-ID: <slrnehqcgj.130.horpner@FIAD06.norwich.edu>

On 2006-09-29, Georg Brandl <g.brandl-nospam at gmx.net> wrote:
> Neil Cerutti wrote:
>> On 2006-09-29, Steve Holden <steve at holdenweb.com> wrote:
>>> MonkeeSage wrote:
>>>> So far as unobfuscated versions go, how about the simple:
>>>> 
>>>> def to_bin(x):
>>>>   out = []
>>>>   while x > 0:
>>>>     out.insert(0, str(x % 2))
>>>>     x = x / 2
>>>>   return ''.join(out)
>>>> 
>>>> Regards,
>> 
>> It was surprising that
>> 
>>>>> i = int("111010101", 2)
>> 
>> is a one-way operation.
>> 
>>>>> s = str(i, 2)
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>> TypeError: str() takes at most 1 argument (2 given)
>
> str() is not only for converting integers, but all other types
> too. An explicit argument for this special case is not Pythonic
> IMO.

I suppose two wrongs wouldn't make a right. ;)

-- 
Neil Cerutti


From uid09012_ti at martin-collins.de  Thu Sep 21 01:52:34 2006
From: uid09012_ti at martin-collins.de (Francach)
Date: 20 Sep 2006 22:52:34 -0700
Subject: wxPython - very small frame
Message-ID: <1158817954.645358.281220@b28g2000cwb.googlegroups.com>

Hi,

I'd like to create a very small Frame without the usual minimise and
maximise icons on the top.  Does anyone know how to do this with
wxPython? I've tried creating a Frame with the style wx.DOUBLE_BORDER,
which gives me a nice small window. But I can't move it around the
screen.

Thanks,
Martin.



From hardcoded.software at gmail.com  Fri Sep  1 14:19:34 2006
From: hardcoded.software at gmail.com (Hardcoded Software)
Date: 1 Sep 2006 11:19:34 -0700
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
Message-ID: <1157134774.774042.50050@i42g2000cwa.googlegroups.com>

Tim Chase wrote:
>  >>> def flatten(x):
> ...     q = []
> ...     for v in x:
> ...             if hasattr(v, '__iter__'):
> ...                     q.extend(flatten(v))
> ...             else:
> ...                     q.append(v)
> ...     return q
> ...

Let's do some nitpicking on "pythonic" style. A more pythonic way to do
it would be:

try:
	q.extend(v)
except TypeError:
	q.append(v)



From floguy at gmail.com  Sat Sep 30 16:09:00 2006
From: floguy at gmail.com (floguy at gmail.com)
Date: 30 Sep 2006 13:09:00 -0700
Subject: Native MP3 Decoder?
In-Reply-To: <1159644923.702983.96310@m73g2000cwd.googlegroups.com>
References: <1159642557.521873.32650@m7g2000cwm.googlegroups.com>
	<1159644923.702983.96310@m73g2000cwd.googlegroups.com>
Message-ID: <1159646940.635093.291960@h48g2000cwc.googlegroups.com>

I did see that, but that seems to only work on Lin/Unix.  In fact, the
only way that I can see to install that package is using distutils and
the config_unix.py script, which indicates to me that it works only on
Lin/Unix.

If I'm mistaken, please let me know.

MonkeeSage wrote:
> floguy at gmail.com wrote:
> > If anyone knows of another project like this, an alternative that I
> > haven't found yet, or has experience in mp3 decoding, please respond
> > with your thoughts.
>
> There's pymad ( http://spacepants.org/src/pymad/ ); haven't tried but
> it should work everywhere libmad does.
> 
> Regards,
> Jordan



From lcaamano at gmail.com  Wed Sep  6 14:39:05 2006
From: lcaamano at gmail.com (lcaamano)
Date: 6 Sep 2006 11:39:05 -0700
Subject: threading support in python
In-Reply-To: <mailman.31.1157478040.5279.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
	<17661.37027.891231.814161@montanaro.dyndns.org>
	<edk8r7$qp$1@sea.gmane.org>
	<17661.44847.579165.784506@montanaro.dyndns.org>
	<7008329d0609051019t3ab9e840ge0021ff20b24e4f0@mail.gmail.com>
	<mailman.31.1157478040.5279.python-list@python.org>
Message-ID: <1157567945.935491.187550@m73g2000cwd.googlegroups.com>

Here's a relevant post

http://mail.python.org/pipermail/python-3000/2006-April/001051.html

or

http://tinyurl.com/fod9u


skip at pobox.com wrote:
> Andre> This seems to be an important issue and fit for discussion in the
>     Andre> context of Py3k. What is Guido's opinion?
>
> Dunno.  I've never tried channeling Guido before.  You'd have to ask him.
> Well, maybe Tim Peters will know.  He channels Guido on a fairly regular
> basis.
> 
> Skip

--
lpc



From dinov at exchange.microsoft.com  Wed Sep  6 19:16:03 2006
From: dinov at exchange.microsoft.com (Dino Viehland)
Date: Wed, 6 Sep 2006 16:16:03 -0700
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <1157583791.744718.149580@m79g2000cwm.googlegroups.com>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
	<edn23m$s6$1@newsreader2.netcologne.de>
	<mailman.90.1157570501.5279.python-list@python.org>
	<ednc4f$ibl$1@newsreader2.netcologne.de>
	<1157583791.744718.149580@m79g2000cwm.googlegroups.com>
Message-ID: <7AD436E4270DD54A94238001769C22273843B06C76@DF-GRTDANE-MSG.exchange.corp.microsoft.com>

Yes, IronPython generates IL which the JIT will then compile when the method is invoked - so our parse/compile time is slower due to this.  We've experimented w/ a fully interpreted mode (which can be enabled with -X:FastEval) where we walk the generated AST instead of compiling it, but that mode doesn't necessarily pass all the tests (and would get worse performance for long running code).

There are other issues w/ startup time as well besides this though that we need to fix (for example we load all the types in mscorlib & System before we drop you into the interpreter, which is a lot of types to be loading...).  I suspect that for a small code snippet it's issues like these that are the most noticeable.

-----Original Message-----
From: python-list-bounces+dinov=microsoft.com at python.org [mailto:python-list-bounces+dinov=microsoft.com at python.org] On Behalf Of Super Spinner
Sent: Wednesday, September 06, 2006 4:03 PM
To: python-list at python.org
Subject: Re: IronPython 1.0 - Bugs or Features?


Claudio Grondi wrote:
> tjreedy wrote:
> > "Claudio Grondi" <claudio.grondi at freenet.de> wrote in message
> > news:edn23m$s6$1 at newsreader2.netcologne.de...
> >
> >>I also erroneously assumed, that the first problem was detected
> >>during parsing ... so, by the way: how can I distinguish an error
> >>raised while parsing the code and an error raised when actually running the code?
> >
> >
> > Parsing detects and reports syntax errors and maybe something else
> > if you use non-ascii chars without matching coding cookie.  Other
> > errors are runtime.
> Let's consider
>    print '"Data   ?"'
>
> In CPython 2.4.2 there is in case of non-ascii character:
>    sys:1: DeprecationWarning: Non-ASCII character '\xea' in file
> C:\IronPython-1.0-BugsOrFeatures.py on line 3, but no encoding
> declared; see http://www.python.org/peps/pep-0263.html for details
> "Data?? ?"
>
> IronPython does not raise any warning and outputs:
> "Data?? ?"
>
> So it seems, that IronPython is not that close to CPython as I have it
> expected.
> It takes much more time to run this above simple script in IronPython
> as in CPython - it feels as IronPython were extremely busy with
> starting itself.
>
> Claudio Grondi

IronPython is a .NET language, so does that mean that it invokes the JIT before running actual code?  If so, then "simple short scripts"
would take longer with IronPython "busy starting itself" loading .NET and invoking the JIT.  This effect would be less noticable, the longer the program is.  But I'm just guessing; I've not used IronPython.

--
http://mail.python.org/mailman/listinfo/python-list

From fredrik at pythonware.com  Mon Sep 25 15:31:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 21:31:31 +0200
Subject: Embed Python in HTML?
In-Reply-To: <1159211834.10848.8.camel@dwarmo.inf.ed.ac.uk>
References: <1159211834.10848.8.camel@dwarmo.inf.ed.ac.uk>
Message-ID: <ef9aqj$d9n$1@sea.gmane.org>

Sean Hammond wrote:

> Forgive my ignorance, but I sometimes write custom dynamic web-pages
> using PHP, by simply embedding PHP in HTML with <?php ?> tags, and
> renaming for example index.html to index.php and making it executable. I
> only use this for very minor things like calling a script, and don't
> really want to learn any more PHP as it looks awful. So I was wondering,
> is it possible to throw together dynamic web pages like this using
> Python or other languages?

sure, and an endless number of programmers have provided their own 
favourite way to do this:

http://wiki.python.org/moin/Templating
http://www.google.com/search?q=python+server+pages
http://www.google.com/search?q=python+template+languages

and so on.  if you want to roll your own, see:

http://jtauber.com/2006/05/templates.html
http://blog.ianbicking.org/templating-via-dict-wrappers.html

</F>



From gnewsg at gmail.com  Thu Sep 21 03:49:58 2006
From: gnewsg at gmail.com (billie)
Date: 21 Sep 2006 00:49:58 -0700
Subject: get process id...
In-Reply-To: <1158769823.998456.171070@b28g2000cwb.googlegroups.com>
References: <1158768873.477030.252960@k70g2000cwa.googlegroups.com>
	<1158769823.998456.171070@b28g2000cwb.googlegroups.com>
Message-ID: <1158824998.589895.36630@m7g2000cwm.googlegroups.com>


georgeryoung at gmail.com ha scritto:

> SpreadTooThin wrote:
> > How does one get the process id?
> > Is there a method for windows and unix (mac os x etc...)
>
> under linux, do:
>   import os
>   os.getpid()

Under Windows:
import ctypes
ctypes.windll.kernel32.GetCurrentProcessId()



From l at spacerad.com  Thu Sep 21 00:49:16 2006
From: l at spacerad.com (zephron2000)
Date: Thu, 21 Sep 2006 04:49:16 -0000
Subject: view page source or save after load
Message-ID: <eet5kc+t8st@eGroups.com>

Hey,

I need to either:

1. View the page source of a webpage after it loads

or

2. Save the webpage to my computer after it loads (same as File > Save
Page As)

urllib is not sufficient (using urlopen or something else in urllib
isn't going to do the trick)

Any ideas?

Thanks,
Lara





From nomail at nixmail.com  Thu Sep  7 08:39:10 2006
From: nomail at nixmail.com (DarkBlue)
Date: Thu, 07 Sep 2006 20:39:10 +0800
Subject: mac address
Message-ID: <450012ee@127.0.0.1>

Hello

Is it possible to get the mac address of a device 
with python 2.4 using code which works in wxp and linux 
rather than requiring some code for windows and some
other code for linux ?

Db
 


From paul at subsignal.org  Fri Sep  1 08:53:08 2006
From: paul at subsignal.org (=?ISO-8859-1?Q?paul_k=F6lle?=)
Date: Fri, 01 Sep 2006 14:53:08 +0200
Subject: Egg problem (~/.python-eggs)
In-Reply-To: <1156983715.531892.298870@i42g2000cwa.googlegroups.com>
References: <1156983715.531892.298870@i42g2000cwa.googlegroups.com>
Message-ID: <ed9a7c$rm9$1@sea.gmane.org>

Mike Orr wrote:
[... snipp ...]

> Can I make it use a different eggs directory?  Any other idea how to
> install a program using eggs on a server?

I had a similar issue with tracd on gentoo. My solution was setting
PYTHON_EGG_CACHE=/tmp/.egg_cache in /etc/conf.d/tracd and exporting that
var in /etc/init.d/tracd before calling start-stop-daemon, e.g.

export PYTHON_EGG_CACHE=${PYTHON_EGG_CACHE}
start-stop-daemon --start ....


cheers
 Paul



From robert.kern at gmail.com  Fri Sep 22 00:24:53 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 21 Sep 2006 23:24:53 -0500
Subject: Building things with setup.py
In-Reply-To: <d8IQg.4153$6S3.3658@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<d8IQg.4153$6S3.3658@newssvr25.news.prodigy.net>
Message-ID: <eevoii$b89$1@sea.gmane.org>

James Stroud wrote:
> Well I added those arguments to $LDFLAGS, but it seemed like a pretty 
> miserable hack, especially the "-shared" part.

Hmmm. Did you have $LDFLAGS set to anything (or more likely, nothing) before? 
I.e. did you have something like this?

   export LDFLAGS=""
   python setup.py build

If such environment variables are present, I think that numpy.distutils may 
clobber the values that are inferred from the configuration.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From richard.kessler at matteicos.com  Tue Sep 26 16:06:32 2006
From: richard.kessler at matteicos.com (richard.kessler at matteicos.com)
Date: 26 Sep 2006 13:06:32 -0700
Subject: Reading a file using a UNC - help!
Message-ID: <1159301192.615441.256710@i3g2000cwc.googlegroups.com>

I have the simplest need...to read a file full of file names(unc) and
then check to see if each of these files exists.  I tried with the
following program, but always get file not found, even when it is
there. If I type in the file name as a literal it works...

Little program:

#This module checks for file existence
import string
import sys

def MainProcess():

    fileList = "c:\a_list_of_filenames.txt"
    inputFiles = open(fileList,"r")

    cnt = 0
    cntNotFound = 0

    for x in inputFiles:
        cnt = cnt + 1
        try:
            x = x.replace("\\","\\\\")
            x = x.replace("\n","")
            open(x,"rb")
            #open('\\\\myserver\\myshare\\myfile.dat',"r")  #works when
hard coded like this
        except IOError, (errno, strerror):
            print "I/O error(%s): %s" % (errno, strerror)
            cntNotFound = cntNotFound + 1
            print x + " Not Found"
        except ValueError, (errno,strerror):
            print "Some other error! " + str(errno) + " " + strerror
        else:
            print "Found " + x

    print str(cnt) + " total..."
    print str(cntNotFound) + " not found..."

if __name__ == '__main__':
    MainProcess()

Many thanks to anyone in advance to can tell me what I am doing wrong!
Platform is XP with PythonWin.

Richard Kessler
richard.kessler at matteicos.com



From vatamane at gmail.com  Fri Sep 29 04:46:49 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 29 Sep 2006 01:46:49 -0700
Subject: wxPython and threading issue
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
Message-ID: <1159519609.483029.162340@c28g2000cwb.googlegroups.com>

If your thread is long running and it is not possible to easily set a
flag for it to check and bail out, then how does it display the
progress in the progress dialog. How often does that get updated? If
the progress dialog is updated often, then at each update have the
thread check a self.please_die flag, for example, and break out
(possibly after releasing some resources...).


Having the work done in an external process might or might not work
easily for your problem. It will make it easy to kill the execution but
it might be OS dependent, and you will have to define some
communication interface between your processes (for example, how would
an external process easily provide progress feedback to its parent?).


Patrick Smith wrote:
> Hi,
> I'm hoping someone here will be able to help as I've been struggling with
> this problem for a few days now.
>
> I'm working on an application that is creating a ProgressDialog, and then
> creating a thread that runs a function from another module in the program.
>
> The problem is, when the cancel button on the ProgressDialog is pressed, the
> thread that was created continues to run.  How can I make it so that when
> the cancel button on the dialog is clicked, the spawned thread dies?
> 
> thanks



From akameswaran at gmail.com  Wed Sep 13 18:39:02 2006
From: akameswaran at gmail.com (akameswaran at gmail.com)
Date: 13 Sep 2006 15:39:02 -0700
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <1158184579.429863.32670@i42g2000cwa.googlegroups.com>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
	<1158184579.429863.32670@i42g2000cwa.googlegroups.com>
Message-ID: <1158187142.580244.20480@m73g2000cwd.googlegroups.com>


sjdevnull at yahoo.com wrote:
> akameswaran at gmail.com wrote:
> > I wrote up a quick little set of tests, I was acutally comparing ways
> > of doing "case" behavior just to get some performance information.  Now
> > two of my test cases had almost identical results which was not at all
> > what I expected.  Ultimately I realized I don't really know how
> > literals are treated within the interpreter.
> >
> > The two implementations I was looking at were:
> >
> > class caseFunction(object):
> >     def __init__(self):
> >         self.caseDict = {'a':"retval = 'a'",
> > 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> >
> > "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
> >                          "i":"retval='i'"}
> >
> >     def doIt(self,a):
> >         exec(self.caseDict.get(a))
> >         return retval
>
> Have you considered eliminating the exec() wart just doing:
Sorry I misread exec as dict in my earlier reply.  I did have another
class based implementation that used functions in the class.  That was
the only one that performed well against if/else.  And only for large
number of cases.  When I compared the two implementations I stated here
- that's where I wondered about my understanding of dictionary literals
with regards to performance.  I could also rewrite the function version
to store functions in the dictionary instead of statements for exec -
but here I was just wanting to compare retrieving a dictionary class
member, vs reading a dictionary literal.  I think the code did a good
job of isolating that as the only change - and that is validated by
using the dissassembler.

>
>     self.caseDict = {'a'='a', 'b'='b'}
> ....
>     def doIt(self, a):
>         return self.caseDict[a]
>
> (or the get call)
> Or for more complex cases going with something like:
>
> class caseFunction(object):
>     def __init__(self):
>         self.caseDict = {'a':self.do_a, 'b':self.do_b}
>     def do_a(self):
>         return 'a'
>     def do_b(self):
>         return 'b'
>     def doIt(self, a):
>         return self.caseDict[a]()
>
> or eliminating the init and
>     def doIt(self, a):
>         return getattr(self, "do_"+a)()
>
> ?  Obviously with these two you might want a bit more complexity for a
> default if the attribute/dict entry is missing, but the simple case
> shows the idea.



From kylotan at gmail.com  Fri Sep  1 06:13:05 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 1 Sep 2006 03:13:05 -0700
Subject: raw audio in windows
In-Reply-To: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
References: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>
Message-ID: <1157105585.717096.99690@m73g2000cwd.googlegroups.com>

Putty wrote:
> Hi.  I've written a small python script that was primarily meant for
> use in a unix-compatible environment.  It writes a bunch of raw audio
> to a file and then sends the file to /dev/audio and the system plays
> the audio.  Very simple.
>
> Is there a simple way I could edit the script (which just uses the
> system call to do this) to run under windows?
>
> This is the code that would have to change:
> os.system("cat audioBuf > /dev/audio")

Not really. You'll have to convert it to .wav and then pass it to a
helper app.

<http://www.microsoft.com/technet/scriptcenter/resources/qanda/nov04/hey1103.mspx>

-- 
Ben Sizer



From jstroud at mbi.ucla.edu  Wed Sep 27 00:42:16 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 04:42:16 GMT
Subject: IDLE - Customizing output format
In-Reply-To: <1159296680.869854.184450@i42g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<I35Sg.8107$Ij.2250@newssvr14.news.prodigy.com>
	<1159296680.869854.184450@i42g2000cwa.googlegroups.com>
Message-ID: <IinSg.5099$TV3.362@newssvr21.news.prodigy.com>

Ilias Lazaridis wrote:
> James Stroud wrote:
>>Ilias Lazaridis wrote:
>>>I am wondering that other users are not annoyed by this reduced
>>>readability.
>>
>>I'm sure its quite unpopular to agree with you, but I do. I am
>>tremendously annoyed the format of the interactive interpreter. Lovely
>>would be output as you describe, but with the option, when selecting for
>>copy-paste, to include the prompts and/or your suggested whitespace
>>margin (e.g. select in doctest mode).
>>
> I am not sure I understand what you meen with the option.
> 
> copy includes both, the ">>>" and the "  :"
> 
> possibly you can elaborate a little, as this could be an important
> factor.

Well, for example, the output (I'm indenting manually for visual clarity):

      >>> print 'bob'
        : bob
      >>> print [i for i in xrange(3)]
        : [0, 1, 2]


Would create the following selection in "doctest" mode (again manually 
adding whitespace):

      >>> print 'bob'
      bob
      >>> print [i for i in xrange(3)]
      [0, 1, 2]


But, say for 'code copy' mode, this selection would be appended to the 
clipboard (again manually adding whitespace for clarity):

      print 'bob'
      print [i for i in xrange(3)]


This way you could either make doctest blocks or copy code drafted in 
the interactive interpreter. I often get carried away and write complete 
useful functions in the interpreter then have to do commands like the 
following in vim:

      :.,+8s/^....//

to fix ">"s and ellipses, etc., in the copied function. Or if I want to 
tweak a function I'm writing in the interpreter, I painfully copy it one 
line at a time. This may or may not be the best way to use the 
interpreter (to draft actual code) but I find myself doing it all of the 
time.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From jss at coders.de  Mon Sep  4 17:15:18 2006
From: jss at coders.de (jss)
Date: Mon, 4 Sep 2006 23:15:18 +0200
Subject: Access elements from nested tuples
In-Reply-To: <4m3ht8F4avl8U1@news.dfncis.de>
References: <4m3ht8F4avl8U1@news.dfncis.de>
Message-ID: <20060904211518.GD17730@jss.coders.de>

Hi Georg!

In [1]: t=(1,(2,3))
> I am bit suprised, that I cannot access '3' via:
> t[1].[1] # syntax error
> 
> But t[1].__getitem__(1) works like expected.

In [2]: k=t[1]

In [3]: k[1]
Out[3]: 3

In [4]: t[1][1]
Out[4]: 3

In [5]: k.__getitem__(1)
Out[5]: 3

In [6]: k.[1]
------------------------------------------------------------
   File "<ipython console>", line 1
     k.[1]
       ^
SyntaxError: invalid syntax

Note that:
In [7]: type(t[1])
Out[7]: <type 'tuple'>
just as t.

hth,
jss


From fanglicheng at gmail.com  Tue Sep 12 05:46:07 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 12 Sep 2006 02:46:07 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158050200.072785.11320@m73g2000cwd.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158033946.844515.13360@m73g2000cwd.googlegroups.com>
	<1158050200.072785.11320@m73g2000cwd.googlegroups.com>
Message-ID: <1158054367.602210.185360@h48g2000cwc.googlegroups.com>


gatti at dsdata.it wrote:
> kondal wrote:
>
> > This is the way the regexp works python doesn't has anything to do with
> > it. It starts parsing the data with the pattern given. It returns the
> > matched string acording the pattern and doesn't go back to find the
> > other combinations.
>
> I've recently had the same problem in Java, using automatically
> generated regular expressions to find the longest match; I failed on
> cases like matching the whole of "Abcdefg", but also the whole of
> "AbCdefg" or "ABcdefg", with ([A-Z][a-z])?([A-Z][A-Za-z]{1,10})? .
> No systematic way to deal with these corner cases was available, and
> unsystematic ways (with greedy and reluctant quantifiers) were too
> complex.
> I ended up eliminating regular expressions completely and building a
> dynamic programming parser that returns the set of all match lengths;
> it wasn't hard and it should be even easier in Python.
>
> Lorenzo Gatti

Thanks. I think make use of the expresiveness of CFG may be better
idea.

Another question: my task is to find in a given string the substrings
that satisfies a particular pattern. That's why the first tool that
came to my mind is regular expression. Parsers, however, only give a
yes/no answer to a given string. To find all substrings with a
particular pattern I may have to try every substring, which may be an
impossible task.

How can I solve this problem?



From fredrik at pythonware.com  Mon Sep 25 12:36:15 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 18:36:15 +0200
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
Message-ID: <ef90hv$52m$1@sea.gmane.org>

Pom wrote:

> I want to convert a Mysql resulset to a dictionary.

that is, you want to convert an array of (key, value, ...) tuples to a
dictionary containing key: (value, ...) pairs, right ?

> I made some code myself, and want to ask you if I do this the right way.
> 
> def remapmysql(a):
>      return (a[0], (a[1:]))
> 
> def test_map():
>      count = 100000 # count of simulated records
>      l1 = range(0, count)
>      l2 = range(count , 2 * count )
>      l3 = range(2 * count, 3 * count )
>      z1 = zip(l1, l2, l3) # simulate a mysql resultset
> 
>      d1 = dict(map(remapmysql,z1))
> 
>      return d1

looks fine to me.

if you care about performance, and is using a recent Python, you could 
try doing

    d1 = dict((row[0], row[1:]) for row in z1)

instead, and see if that runs faster (this uses a generator expression 
instead of a callback and a full list).

</F>



From rhymes at myself.com  Sat Sep 23 15:11:48 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Sat, 23 Sep 2006 21:11:48 +0200
Subject: "what's new" missing
References: <ODfRg.183$Kw1.8@trnddc05>
Message-ID: <1hm4yub.btv905rdqlrjN%rhymes@myself.com>

David Isaac <aisaac0 at verizon.net> wrote:
> "What's New" document for Python 2.5?
> http://docs.python.org/dev/whatsnew/whatsnew25.html
> pretends to hold it, but the links are corrupt.

It's without /dev/

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From claudio.grondi at freenet.de  Sat Sep  9 13:53:14 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Sat, 09 Sep 2006 19:53:14 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <1157758128.418227.301980@e3g2000cwe.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<1157758128.418227.301980@e3g2000cwe.googlegroups.com>
Message-ID: <eduv27$8cj$1@newsreader2.netcologne.de>

Omar wrote:
> thanks for the suggestions, fellas
> 
Would be kind of you to tell us which one you have decided to use and why?

Claudio Grondi
P.S. If you don't like any of already mentioned you can give SciTe a try.


From george.sakkis at gmail.com  Thu Sep 14 00:06:14 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 13 Sep 2006 21:06:14 -0700
Subject: FtpUtils Progress Bar
References: <1158200735.698563.93380@i42g2000cwa.googlegroups.com>
Message-ID: <1158206774.452117.152700@b28g2000cwb.googlegroups.com>

iwcook58 at gmail.com wrote:
> Hi,
> I can successfully upload and download files using Stefan's Schwarzer's
> ftputil script.
>
> The problem is that as some of the files are quite large you cannot see
> how much has been downloaded/uploaded.
> Even a percentage or just dots going across the screen would be better
> than nothing.
>
> Does anyone have an example on how to show the progress of the
> upload/download when using ftputil?

You'll probably have more luck asking at
http://codespeak.net/mailman/listinfo/ftputil.

George



From pajerpunctuationinamedotcom  Sun Sep 24 16:01:12 2006
From: pajerpunctuationinamedotcom (gap)
Date: Sun, 24 Sep 2006 16:01:12 -0400
Subject: help with debugging a ctypes problem
In-Reply-To: <1159044873.990755.108160@i42g2000cwa.googlegroups.com>
References: <KLednWs2QvwK2ojYnZ2dnUVZ_tSdnZ2d@comcast.com>
	<1159044873.990755.108160@i42g2000cwa.googlegroups.com>
Message-ID: <ReidnXX3EMOPeYvYnZ2dnUVZ_sydnZ2d@comcast.com>

p.lavarre at ieee.org wrote:
>> help figuring out how to debug ... ctypes ...
>> a commercial dll.  A certain function takes five arguments, foo(a, b, c, d, e).
>> Can I view the appropriate stack? ... Any other ideas or advice?  etc?
> 
> Did you call the foo of _cdecl ctypes.cdll or the foo of _stdcall =
> ctypes.windll?
> 
> What is the sizeof each argument type?  Preferably fetched by compiling
> some C to printf them?
> 
> Would it help to call C in another Dll to return the stack pointer, so
> Python could print the stack?
> 

Uh... windll, I think.  I'm really green here.

But there is news:  If simply leave off the last argument of foo() and 
bar(), each works as expected.  That is, I call foo() with four instead 
of the five that the docs and the c example call for, and I call bar() 
with one argument instead of the two that are called for.  Everything 
works, but you gotta wonder.

Meanwhile, I upgraded from ctypes 0.9.6 to 1.0.0,  but I don't think 
that that changed anything.

I'll see if I can implement your suggestions, and if I manage it, I'll 
report back.

thanks,
-g


From ldo at geek-central.gen.new_zealand  Tue Sep 26 04:56:20 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 20:56:20 +1200
Subject: SSL meta data
References: <ef99ht$ih2$1@svr7.m-online.net>
Message-ID: <efaptp$rfd$4@lust.ihug.co.nz>

In message <ef99ht$ih2$1 at svr7.m-online.net>, BerndWill wrote:

> The only solution from me and my colleagues view (as poor at it sounds)
> is to setup a little python script "pinging" an amount of about 2.000
> servers in daily intervals checking for the validity of those SSL
> certificates. 

There's no need to check each server more than once. It gives you its
certificate, you check the expiry date, save that in a database, and you
don't have to worry until the expiry date comes close, when it's time to
notify somebody to organize a renewal.


From Avizoa at gmail.com  Sat Sep 23 18:24:15 2006
From: Avizoa at gmail.com (Avizoa at gmail.com)
Date: 23 Sep 2006 15:24:15 -0700
Subject: Strange __future__ behavior in Python 2.5
References: <1159044689.234403.216460@m7g2000cwm.googlegroups.com>
Message-ID: <1159050255.414817.64550@d34g2000cwd.googlegroups.com>

mdsteele at gmail.com wrote:
> My understanding of the __future__ statement is that you may say
> something like:
>
> from __future__ import foo, bar
>
> to enable more than one feature.  However, this does not seem to be
> working properly in 2.5; it behaves as expected when typed into the
> interactive interpreter, but not when it is in a module.  When I try to
> import the following module:

*snip*

> Is this a bug, or am I misunderstanding something?  I'm using the final
> release of Python 2.5 (r25:51918, Sep 19 2006, 08:49:13) on Mac OS X.


Only one "from __future__" can be imported per line.

So,
from __future__ import foo
from __future__ import bar
etc.

It will only import the first if you give multiple.

Why this is, I don't know.



From thorsten at thorstenkampe.de  Mon Sep 11 10:00:37 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Mon, 11 Sep 2006 15:00:37 +0100
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <1d2x4r9zw9si.140aanbt0ymxz.dlg@40tude.net>

* David Isaac (2006-09-11 14:23 +0100)
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.

Gadfly?


From adamm_at_ at blic_dot_.net  Wed Sep 27 13:28:05 2006
From: adamm_at_ at blic_dot_.net (Mladen Adamovic)
Date: Wed, 27 Sep 2006 19:28:05 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <efecan$54n$1@ariane.blic.net>

walterbyrd wrote:
> If so, I doubt there are many. 
> 
> I wonder why that is?
> 


As I've seen on the monster there are openings for Python developers.
It is 30x less than Java, but there are less Python developers, so...
I don't know is it easier to find the job as Python or as Java developer.

I could try to find one as Python developer, to try how does it looks 
like...


-- 
Mladen Adamovic
http://www.online-utility.org
http://www.cheapvps.info
http://www.vpsreview.com




From yorklee70 at gmail.com  Sun Sep 24 02:54:25 2006
From: yorklee70 at gmail.com (York)
Date: Sat, 23 Sep 2006 23:54:25 -0700
Subject: Regular expression confusion
In-Reply-To: <1159062810.790437.188220@h48g2000cwc.googlegroups.com>
References: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>
	<1159062810.790437.188220@h48g2000cwc.googlegroups.com>
Message-ID: <45162BA1.6030604@gmail.com>

Oh, that's right, the second arg is escaped by re compiler too.

Thank you, John.

York



John Machin wrote:
> York wrote:
> 
>>I have two backslash - a. and I want to replace them with one backslash,
>>but I failed:
>>
>> >>> import re
>> >>> a = '\\\\'
>> >>> re.sub(r'\\\\', '\\', '\\\\')
>>Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>>   File "/usr/lib/python2.3/sre.py", line 143, in sub
>>     return _compile(pattern, 0).sub(repl, string, count)
>>   File "/usr/lib/python2.3/sre.py", line 258, in _subx
>>     template = _compile_repl(template, pattern)
>>   File "/usr/lib/python2.3/sre.py", line 245, in _compile_repl
>>     raise error, v # invalid expression
>>sre_constants.error: bogus escape (end of line)
>> >>>
>>
>>anybody knows why?
> 
> 
> Yep. There are *two* levels of escaping happening (1) Python compiler
> (2) re compiler (in the first two args, but of course only Python in
> the 3rd).
> To get your single backslash you need to start out with four cooked or
> two raw:
> 
> | >>> re.sub(r'\\\\', '\\\\', '\\\\')
> '\\'
> | >>> re.sub(r'\\\\', r'\\', '\\\\')
> '\\'
> 
> Cheers,
> John
> 


From ptmcg at austin.rr._bogus_.com  Tue Sep 19 14:37:44 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Tue, 19 Sep 2006 18:37:44 GMT
Subject: Nano Technology Application For Health,Wellness and Beauty
References: <1158688883.046410.110720@d34g2000cwd.googlegroups.com>
Message-ID: <YNWPg.5497$vD2.4060@tornado.texas.rr.com>

<Ferdy.Bonvo at gmail.com> wrote in message 
news:1158688883.046410.110720 at d34g2000cwd.googlegroups.com...
> Dear lovely moderator, please allow me to spread this information,
> somebody might need it, please forgive me if you are bothered
>
> Dear All, this might be useful for you and your family
>

<snip>

Does it also predict earthquakes?

For your callous targetting of those suffering autism and "other mental and 
physical disease", I suggest a special application of your BIO DISK for the 
treatment of hemorrhoids.

-- Paul 




From duikboot at localhost.localdomain  Fri Sep 29 03:32:44 2006
From: duikboot at localhost.localdomain (db)
Date: Fri, 29 Sep 2006 09:32:44 +0200
Subject: running commands with sudo & python
References: <1159478294.302376.119620@h48g2000cwc.googlegroups.com>
Message-ID: <pan.2006.09.29.07.32.44.519656@localhost.localdomain>


Hi there,

I think you can do that with pexpect

http://pexpect.sourceforge.net/

good luck

On Thu, 28 Sep 2006 14:18:14 -0700, coldsoul4e wrote:
> Hi!
> I must execute a command with os.command(), but with root permissions.
> Is there anyway to do that with python? 
> Thanks





From ptmcg at austin.rr._bogus_.com  Fri Sep  8 12:29:34 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 08 Sep 2006 16:29:34 GMT
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
	<1157730937.621029.259320@i3g2000cwc.googlegroups.com>
Message-ID: <OTgMg.15795$o42.8868@tornado.texas.rr.com>

"Andy Dingley" <dingbat at codesmiths.com> wrote in message 
news:1157730937.621029.259320 at i3g2000cwc.googlegroups.com...
>
> vbfoobar at gmail.com wrote:
>
>> I am looking for python code that takes as input a list of strings
>> [...] and outputs the python regular expression
>
>    (s1|s2|s3|s4|s5)
> for strings of "s1" etc.
>
> Regex compilers are themselves quite good at optimising beyond this
>

It turns out this problem is a little trickier, especially when one of your 
strings is a leading subset of another.  For instance, let's say we are 
looking for comparison operators, one of <, >, =, >=, <=, or !=.  Simply 
concatenating with intervening '|' characters gives this regexp:

"<|>|=|<=|>=|!="

However, the leading '<' and '>' alternatives mask the later '<=', '<>', and 
'>=' alternatives, and so the regexp never matches the longer options (I was 
not able to find a greediness switch that would override this).  So when 
searching "a >= b" we get this:

>>> re.findall("<|>|=|<=|>=|!=", "a >= b")
['>', '=']

By moving the longer option to the front of the regexp, the longer option is 
no longer masked by the shorter:

>>> re.findall(">=|<|>|=|<=|!=", "a >= b")
['>=']


You also can't just concatenate input strings, since it is very likely they 
will contain one of the magic re symbols ()[]?*./\+, etc.  So re.escape 
needs to be called to add the necessary '\'s.

Here is an extract from pyparsing's oneOf function that does something 
similar, that handles the leading substring masking problem, and escapes the 
input strings, before concatenating them to a valid regexp.  Of course, the 
simplest approach would be to just sort the symbols by descending length, 
but you may have some a priori knowledge that 'X' is a very common match, 
and want that option tested as early as possible.  So this method only 
reorders strings if there is a masking problem.


def createREfrom( symbols ):  #symbols is a list of strings
    isequal = ( lambda a,b: a == b )
    masks = ( lambda a,b: b.startswith(a) )
    i = 0
    while i < len(symbols)-1:
        cur = symbols[i]
        for j,other in enumerate(symbols[i+1:]):
            if ( isequal(other, cur) ):
                del symbols[i+j+1]
                break
            elif ( masks(cur, other) ):
                del symbols[i+j+1]
                symbols.insert(i,other)
                cur = other
                break
        else:
            i += 1
    return "|".join( [ re.escape(sym) for sym in symbols] )

>>> print createREfrom(["ABC","ABCDEF","ABCGHI"])
ABCDEF|ABCGHI|ABC
>>> print createREfrom("> < = <= >= != << >> <<< >>>".split())
\>\=|\>\>\>|\>\>|\>|\<\=|\<\<\<|\<\<|\<|\=|\!\=
>>> re.findall( createREfrom("> < = <= >= != << >> <<< >>>".split()), "a <= 
>>> b")
['<=']


Note, this does not do any optimization, such as collapsing "ABCDEF|ABCGHI" 
to "ABC(DEF|GHI)".  I think there are some recipes in the Python cookbook 
for such optimization.

-- Paul




From mikeowens at gmail.com  Mon Sep 11 22:57:20 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Mon, 11 Sep 2006 21:57:20 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee4vve$rrj$1@sea.gmane.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<df2316bd0609111710t41281120ve6363561f9d92f67@mail.gmail.com>
	<ee4vve$rrj$1@sea.gmane.org>
Message-ID: <df2316bd0609111957p13de28dg49810cad44fada9a@mail.gmail.com>

On 9/11/06, Steve Holden <steve at holdenweb.com> wrote:

> > Furthermore, I'm not responding to Python's representation of one
> > thing or another. I am responding to some of the ridiculous and unfair
> > criticisms directed at SQLite. Whatever Python did or didn't do, or
> > whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
> > drug through the mud.
> >
> Which is precisely why I took pains to acknowledge that there were many
> purposes for which SQLite is entirely suitable.

Which was objective and diplomatic. Thanks.

> >>You shouldn't need to
> >>add check constraints to verify that the value stored in an integer
> >>column is actually an integer.
> >
> > You should if your using SQLite, and this is clearly documented:
> > http://www.sqlite.org/datatype3.html.
> >
> Right. In which case, why bother to define the types of the columns in
> your table declarations?

Actually there is some use for this, so long as the declared types
correspond to one of SQLite's storage classes -- INTEGER, REAL, TEXT,
BLOB, or NONE. When SQLite sees one of these as the declared type, it
will apply some "affinity" rules for updates/inserts which will
attempt to coerce the input value to that type if possible. So while
this does not give you true strict typing, it does provide you with
something helpful if you code your application with this in mind. As
already mentioned, you will need triggers or check constraints if you
need true strict typing.

> > Then what does calling it crappy and goofy suggest?
>
> That colloquial English expression is acceptable on this list.

And what about some of the other colloquial expressions I saw but didn't repeat?

> Strict affinity mode seems to represent a movement towards more rigorous
> type checking. So the designers of SQLIte accept that it wasn't perfect.
> So what? Please, don't take on so. It's only ones and zeroes.

This is an example of SQLite listening and responding to constructive
feedback. When I first started using SQLite, it didn't have an
autoincrement primary key. I made a case for it, asked nicely, and it
was done in three days. Most people will agree that this approach
tends to work better in most projects, as opposed to calling them
goofy and crappy, or its author a crackpot.

Mike

> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From onurb at xiludom.gro  Mon Sep 18 12:06:22 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 18 Sep 2006 18:06:22 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <pan.2006.09.16.21.29.16.265978@etu.univ-orleans.fr>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
	<pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>
	<1158437430.667410.78480@i3g2000cwc.googlegroups.com>
	<mailman.186.1158439424.10491.python-list@python.org>
	<pan.2006.09.16.21.29.16.265978@etu.univ-orleans.fr>
Message-ID: <450ec3fe$0$29762$626a54ce@news.free.fr>

Rakotomandimby (R12y) wrote:
> On Sat, 16 Sep 2006 22:43:41 +0200, Daniel Nogradi wrote:
>> Then how about running your site on python and not php?
> 
> PHP has "better" documentation... ;-)
> More seriously, I can provide a CPS hosting to nicolasfr if he wants.

Alert ! Unusable undocumented monstruosity ahead...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From sjmachin at lexicon.net  Fri Sep 22 06:37:53 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 03:37:53 -0700
Subject: Don't use regular expressions to "validate" email addresses
In-Reply-To: <mailman.450.1158919333.10491.python-list@python.org>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au> <eevo5f$abu$1@sea.gmane.org>
	<mailman.442.1158902652.10491.python-list@python.org>
	<1158916433.621758.21640@m73g2000cwd.googlegroups.com>
	<mailman.450.1158919333.10491.python-list@python.org>
Message-ID: <1158921473.742327.100900@k70g2000cwa.googlegroups.com>


Ben Finney wrote:
> "John Machin" <sjmachin at lexicon.net> writes:
>
> > What proportion of deliverable e-mail addresses have more than one @
> > in them?
>
> I don't know. Fortunately, I don't need to; I don't "validate" email
> addresses by regular expression.
>
> What proportion of deliverable email addresses do you want to discard
> as "not valid"?

None. Re-read my post. I was suggesting suggesting an "are you sure" in
the case of weird or infrequent ones. Discarding wasn't mentioned.



From MonkeeSage at gmail.com  Sat Sep 30 20:15:08 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 17:15:08 -0700
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu><87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de> <451ea5cc$1@news.vo.lu>
	<1159642479.968928.34760@k70g2000cwa.googlegroups.com>
	<efmgtt$q1m$1@mlucom4.urz.uni-halle.de>
	<pan.2006.09.30.20.56.40.77304@gmx.net>
	<roy-87DD98.19365030092006@reader1.panix.com>
Message-ID: <1159661708.291334.90930@b28g2000cwb.googlegroups.com>

Roy Smith wrote:
> More to the point:
>
> You can stick it in a bottle, you can hold it in your hand, AMEN!

That's simply an implementation detail of perl regexps; it doesn't
really address the issue. For example, in ruby a regexp is an object.
Matches are also objects when one uses the String#match and
Regexp#match methods rather than the =~ operator:

s = 'file=blah.txt'
r = /file=(.*)/
puts r
# => (?-mix:file=(.*))

m = s.match(r)
puts m.inspect
# => #<MatchData:0xb7c24f90>

m = r.match(s)
puts m.inspect
# => #<MatchData:0xb7c24e64>

Regards,
Jordan



From john.j.shappelljr at us.army.mil  Mon Sep 11 12:23:08 2006
From: john.j.shappelljr at us.army.mil (John Shappell)
Date: Mon, 11 Sep 2006 11:23:08 -0500
Subject: assistance with python coding
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAIfJJtCtdYpCgkwH0fZ63UTCgAAAEAAAAFenylNNu99Ev4dFQBNjKxgBAAAAAA==@us.army.mil>

I don't understand what this question is asking; can you clarify for me and
maybe point me in the right direction?
 
As an exercise, rewrite this line of code without using a sequence
assignment. 
self.cards[i], self.cards[j] = self.cards[j], self.cards[i]
 
V/R
 
CW2 John Shappell
931-980-4707
FAX 775-618-2455
john.j.shappelljr at us.army.mil
 
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From DustanGroups at gmail.com  Fri Sep 15 23:02:29 2006
From: DustanGroups at gmail.com (Dustan)
Date: 15 Sep 2006 20:02:29 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
In-Reply-To: <1158368557.990103.222800@k70g2000cwa.googlegroups.com>
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
	<1158366884.271106.233500@i3g2000cwc.googlegroups.com>
	<1158368557.990103.222800@k70g2000cwa.googlegroups.com>
Message-ID: <1158375749.810421.144120@k70g2000cwa.googlegroups.com>


Jay wrote:
> Thanks for the tip, but that breaks things later for what I'm doing.
>
> bearophileHUGS at lycos.com wrote:
> > In that case you don't need a lambda:
> >
> > import Tkinter as tk
> >
> > class Test:
> >     def __init__(self, parent):
> >         buttons = [tk.Button(parent, text=str(x+1),
> > command=self.highlight(x)) for x in range(5)]
> >         for button in buttons:
> >             button.pack(side=tk.LEFT)

Well, actually, that's wrong. You obviously don't understand why lambda
is necessary for event binding; in this case (and many others, for that
matter), the button gets bound to the event *returned* by
self.highlight(x), which, since nothing gets returned, would be None.
Then when you click the button, Tkinter calls None(), and out of the
blue, an error is raised.

Lambda is the safe way around that error.

> >
> >     def highlight(self, x):
> >         print "highlight", x
> >
> > root = tk.Tk()
> > d = Test(root)
> > root.mainloop()
> > 
> > Bye,
> > bearophile



From fredrik at pythonware.com  Wed Sep 13 12:29:28 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 18:29:28 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <1158164270.297334.209790@d34g2000cwd.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>	<ee98cn$qhp$1@foggy.unx.sas.com>	<mailman.40.1158163197.10491.python-list@python.org>
	<1158164270.297334.209790@d34g2000cwd.googlegroups.com>
Message-ID: <ee9bl8$go4$1@sea.gmane.org>

John Machin wrote:

> Any support for the radical notion of the error message giving the full
> path of the file that it's complaining about? If so, I'll lob in an
> enhancement request in the morning ...

there's always "python -vv", of course.

</F>



From sjmachin at lexicon.net  Sat Sep 23 18:22:14 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 15:22:14 -0700
Subject: Fatal error after RE-installing Python 2.3.4
In-Reply-To: <1159035923.389871.77840@d34g2000cwd.googlegroups.com>
References: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
	<1158979739.307178.295730@i42g2000cwa.googlegroups.com>
	<1159035923.389871.77840@d34g2000cwd.googlegroups.com>
Message-ID: <1159050134.222548.55420@d34g2000cwd.googlegroups.com>


Cappy2112 wrote:

>
> > Some thoughts and questions:
> > 1. Telling us what the allegedly spurious pychecker warnings were would
> > be a good idea.
>
> pychecker isn't really a concern at this point- and has ben uninstalled
> (actually deleted, since there is no installer/uninstaller for this
> package.)
> But I was getting lots of missing module warnings, which two of my
> co-workers did not get.

That's right, pychecker is not a concern. It's very unlikely to be part
of the problem. Do please consider that it could be part of the
*solution* -- which missing modules? what directories are they in on
your co-workers' machines? what directories are they in on your machine
-- same/different/none??? Answers to those questions might just give
you a clue as to what is going on.

Talking about clues, are there entries in drwtsn32.log from when Python
crashes? Do they give any clues?

> When I saw the pychecker anomally, I decided to rein-install Python & a
> few of the packages.

Uh-oh ... what packages?  Which few? Suggestion: (1) Re-install Python.
Check if it crashes. (2) Install package 1, check, install package 2,
check, ...

Note: Uninstalling Python will blow all your packages away iff they are
all installed in the site-packages directory of the Python
installation. It may be worth exploring this hypothesis: package has
PYD or DLL, it's corrupted, it's installed outside the normal Python
package hierarchy, so doesn't get cleaned away ...

Recall that you get Python crashing only when run in the command
window; this may indicate that the PATH environment variable is causing
something else to be loaded than what you expect. Try looking in every
directory in that path to see if there is any old rubbish there:
python*.exe, python23.dll, some_package.dll, some_package.pyd, ...

BTW, if python -v doesn't clue you in, try python -vv
---- that's "v" * 2, not dubya :-)

HTH,
John



From gagsl-py at yahoo.com.ar  Tue Sep 12 01:51:17 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 02:51:17 -0300
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157484212.885076.304340@h48g2000cwc.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060912022756.0392abd8@yahoo.com.ar>

At Tuesday 5/9/2006 16:23, mensanator at aol.com wrote:

>I would be surprised if they had never used ANY database. A little
>thing like dynamic field typing will simply make it impossible to
>migrate your Sqlite data to a *real* database.

Why not? Because it breaks the relational model rules? That model 
certainly was great 30 years ago, but now things are different. (In 
fact, you didn't menction the word "relational", but I presume you 
were thinking of that).
Even what you call *real* databases have a lot of incompatibilities 
among them (e.g. ORACLE does not provide an "autoincrement" type, but 
has sequences, and so on...). Of course you could restrict yourself 
to, by example, SQL92 entry level and be a lot more compatible.
But if I'm using a nice OO language like Python which lets me bind 
*any* object to *any* name, why should be wrong to bind *any* object 
to *any* database column? Looks a lot more "pythonic" for me. Of 
course, a true object database (like ZODB) is better.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From bearophileHUGS at lycos.com  Wed Sep 13 08:33:32 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 13 Sep 2006 05:33:32 -0700
Subject: table (ascii text) lin ayout recognition
References: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
	<8RPNg.748$TV3.408@newssvr21.news.prodigy.com>
	<xZPNg.749$TV3.305@newssvr21.news.prodigy.com>
Message-ID: <1158150812.520471.239910@i3g2000cwc.googlegroups.com>

My version, not much tested. It probably doesn't work well for tables
with few rows. It finds the most frequent word beginnings, and then
splits the data according to them.

data = """\
44544      ipod          apple     black         102
GFGFHHF-12 unknown thing bizar     brick mortar  tbc
45fjk      do not know   + is less               biac
           disk          seagate   250GB         130
5G_gff                   tbd       tbd
gjgh88hgg  media record  a and b                 12
hjj        foo           bar       hop           zip
hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
qdsd       zert                    nope          nope
"""

import re, pprint
# import collections # For Python 2.5

# RE to find the beginning of words
tpatt = re.compile(r"\b[^ ]")

# Remove empty lines
lines = filter(None, data.splitlines())

# Find the positions of all word beginnings
# This finds:  treshs = [0, 11, 25, 35, 49, ...
# 44544      ipod          apple     black         102
# ^          ^             ^         ^             ^
treshs = [ob.start() for li in lines for ob in tpatt.finditer(li)]

# Find treshs frequences
freqs = {}
for el in treshs:
    freqs[el] = freqs.get(el, 0) + 1

# Find treshs frequences, alternative for Python V.2.5
# freqs = collections.defaultdict(int)
# for el in treshs:
#     freqs[el] += 1

# Find a big enough frequence
bigf = max(freqs.itervalues()) * 0.6

# Find the most common column beginnings
cols = sorted(k for k,v in freqs.iteritems() if v>bigf)

def xpairs(alist):
    "xpairs(xrange(n)) ==> (0,1), (1,2), (2,3), ..., (n-2, n-1)"
    for i in xrange(len(alist)-1):
        yield alist[i:i+2]

result = [[li[x:y].strip() for x,y in xpairs(cols+[None])] for li in
lines]

print data
pprint.pprint(result)


"""
Output:

44544      ipod          apple     black         102
GFGFHHF-12 unknown thing bizar     brick mortar  tbc
45fjk      do not know   + is less               biac
           disk          seagate   250GB         130
5G_gff                   tbd       tbd
gjgh88hgg  media record  a and b                 12
hjj        foo           bar       hop           zip
hg uy oi   hj uuu ii a   qqq ccc v ZZZ Ughj
qdsd       zert                    nope          nope

[['44544', 'ipod', 'apple', 'black', '102'],
 ['GFGFHHF-12', 'unknown thing', 'bizar', 'brick mortar', 'tbc'],
 ['45fjk', 'do not know', '+ is less', '', 'biac'],
 ['', 'disk', 'seagate', '250GB', '130'],
 ['5G_gff', '', 'tbd', 'tbd', ''],
 ['gjgh88hgg', 'media record', 'a and b', '', '12'],
 ['hjj', 'foo', 'bar', 'hop', 'zip'],
 ['hg uy oi', 'hj uuu ii a', 'qqq ccc v', 'ZZZ Ughj', ''],
 ['qdsd', 'zert', '', 'nope', 'nope']]
"""

Bye,
bearophile



From ldo at geek-central.gen.new_zealand  Sat Sep 23 18:41:02 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 10:41:02 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
Message-ID: <ef4d44$8h4$2@lust.ihug.co.nz>

In message <mailman.499.1159035571.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Lawrence D'Oliveiro wrote:
> 
>> So I think the default for the second argument to cgi.escape should be
>> changed to True. Or alternatively, the second argument should be removed
>> altogether, and quotes should always be escaped.
> 
> you're confused: cgi.escape(s) is designed to be used for ordinary text,
> cgi.escape(s, True) is designed for attributes.

What works for attributes also works for ordinary text.



From marc.wyburn at googlemail.com  Fri Sep  8 07:29:42 2006
From: marc.wyburn at googlemail.com (marc.wyburn at googlemail.com)
Date: 8 Sep 2006 04:29:42 -0700
Subject: ctypes listing dll functions
Message-ID: <1157714982.067338.292570@m73g2000cwd.googlegroups.com>

hi all and before I start I apologise if I have this completely muddled
up but here goes.

I'm trying to call functions from a dll file in a python script but I
can't work out what functions are available. I'm using ctypes.  I've
tried using dir(ctypes_object) but the resultant output looks like a
list of standard functions and not the ones I'm looking for.

Also how can I tell if the dll was written in C or C++ as I understand
C++ dlls can't be used.

I have a header file that starts;

#ifndef __DIRAC__
#define __DIRAC__


    // Prototypes

    const char *DiracVersion(void);
    void *DiracCreate(long lambda, long quality, long numChannels,
float sampleRate, long (*readFromChannelsCallback)(float **data, long
numFrames, void *userData));
    void *DiracCreate(long lambda, long quality, long numChannels,
float sampleRate, long (*readFromChannelsCallback)(float *data, long
numFrames, void *userData));
    long DiracSetProperty(long selector, long double value, void
*dirac);
    long double DiracGetProperty(long selector, void *dirac);
    void DiracReset(bool clear, void *dirac);
    long DiracProcess(float **audioOut, long numFrames, void *userData,
void *dirac);
    long DiracProcess(float *audioOut, long numFrames, void *userData,
void *dirac);
    void DiracDestroy(void *dirac);
    long DiracGetInputBufferSizeInFrames(void *dirac);

I would have thought that DiracCreate, DiracSetProperty etc were all
callable functions.  As you may have guessed I'm don't do much work in
C...

Thanks, MW.



From MonkeeSage at gmail.com  Sat Sep 23 07:37:31 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 04:37:31 -0700
Subject: grabbing random words
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
	<1159008909.126087.214890@m7g2000cwm.googlegroups.com>
Message-ID: <1159011451.721431.197210@d34g2000cwd.googlegroups.com>

Another approach would be to just scrape a CS's random (5.75 x 10^30)
word haiku generator. ;)

import urllib
import libxml2
import random

uri   = 'http://www.cs.indiana.edu/cgi-bin/haiku'

sock  = urllib.urlopen(uri)
data  = sock.read()
sock.close()

doc   = libxml2.htmlParseDoc(data, None)
words = [p.content for p in doc.xpathEval('//a')[8:-3]]
doc.freeDoc()

print random.choice(words)

Regards,
Jordan



From gagsl-py at yahoo.com.ar  Tue Sep 26 22:38:24 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 23:38:24 -0300
Subject: preserving color ouput of a shell command via os.popen()
In-Reply-To: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>
References: <1159322874.307248.19540@i42g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926233612.04a79d90@yahoo.com.ar>

At Tuesday 26/9/2006 23:07, zeezlo at yahoo.com wrote:

>I would like to get the output of a shell process on Linux (eg, "ls
>--color=auto") run via os.popen(), filter it and then output parts of
>it while preserving any original coloring added by that process.

Yes, just omit the =auto (or use --color=always)
auto means "use colors *only* when *not* redirected"



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From robert.kern at gmail.com  Wed Sep 27 13:21:08 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 27 Sep 2006 12:21:08 -0500
Subject: License / Registration key enabled software
In-Reply-To: <pan.2006.09.27.16.51.12.529785@vfx.org.uk>
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
Message-ID: <efebtv$pnk$1@sea.gmane.org>

Mike Playle wrote:
> For instance a customer might want to buy a license to
> use your software on up to 5 machines at once, but still
> have the software installed on every machine in the
> company. License systems like FlexLM can work here, to
> make it easier for them to ensure that they comply with
> the terms of the license.

But then you must weigh that against the inconvenience that you impose upon your 
customers. Although you may make it easier for them to comply with your license, 
you are also making it harder for them to *use* your software.

I do not know a single person who has used FlexLM-licensed software and does not 
hate FlexLM with a burning passion.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From ty.2006 at yahoo.com  Fri Sep 22 14:47:28 2006
From: ty.2006 at yahoo.com (T)
Date: 22 Sep 2006 11:47:28 -0700
Subject: Newbie RE question
References: <1158950663.902262.235410@m73g2000cwd.googlegroups.com>
Message-ID: <1158950848.665561.143020@i3g2000cwc.googlegroups.com>

I meant to say:  Search for any character in r'/\:*?"<>|' in a string
Sorry

T wrote:
> I would like to search for any of the strings in r'/\:*?"<>|' in a
> string using RE module.  Can someone tell me how?
> 
> Thanks!



From python.list at tim.thechases.com  Sun Sep  3 23:11:10 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 03 Sep 2006 22:11:10 -0500
Subject: Python newbie with a problem writing files
In-Reply-To: <1157339031.920800.246020@i3g2000cwc.googlegroups.com>
References: <mailman.10321.1157331982.27775.python-list@python.org>
	<1157339031.920800.246020@i3g2000cwc.googlegroups.com>
Message-ID: <44FB994E.1040808@tim.thechases.com>

>> feed_list = open("feed_listing.conf","r")
> 
> What could it be about the above line that means "Open this file for
> READ ONLY"?

Oooh, oooh, I know!  If you rot13 the file-name, it comes back as 
"srrq_yvfgvat.pbas".  The double "r"s in the file-name instruct 
python to open the file as "really read-only".  And the .pbas 
means you need to be opening the file with python-basic, not python.

:)

-tkc






From horpner at yahoo.com  Fri Sep  1 15:50:44 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 1 Sep 2006 21:50:44 +0200
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
Message-ID: <slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>

On 2006-09-01, Tal Einat <tal.no.no.spam at gmail.com> wrote:
> Tim Chase wrote:
>> I'm not sure if '__iter__' is the right thing to be looking
>> for, but it seems to work at least for lists, sets,
>> dictionarys (via their keys), etc.  I would use it because at
>> least then you know you can iterate over it
>
> AFAIK and as seen throughout posts on c.l.py, the best way to
> check if something is iterable is:
>
> try:
>     iter(obj)
> except TypeError:
>     <obj is not iterable>
> else:
>     <obj is iterable>

That confounds me.  Of course, I'm coming from a C++, where you
never want to throw an exception in a common case, hence the name
'exception'. The Python FAQ does say that raising and catching an
exception is an expensive operation. I see that type-checking is
good to avoid, but type-checking must be better than "abusing"
exceptions in this way. Is the above really a popular idiom?

If so, I guess I'll get used to it.

-- 
Neil Cerutti


From robert.kern at gmail.com  Sat Sep 16 03:18:37 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 16 Sep 2006 02:18:37 -0500
Subject: Finding dynamic libraries
In-Reply-To: <1158367145.252363.21230@d34g2000cwd.googlegroups.com>
References: <mailman.131.1158333391.10491.python-list@python.org>
	<1158367145.252363.21230@d34g2000cwd.googlegroups.com>
Message-ID: <eeg8gb$r4i$1@sea.gmane.org>

MonkeeSage wrote:
> Bill Spotz wrote:
>> Is there a way to tell an executing python script where to look for
>> dynamically-loaded libraries?
> 
> If I understand, you want to tell an already running python process to
> import some extensions from arbitrary locations?

No, his extensions link against other shared libraries which are not Python 
extensions. Those shared libraries are in nonstandard locations because he is 
running his tests before installing the libraries and his Python code.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From onurb at xiludom.gro  Wed Sep  6 10:59:09 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 06 Sep 2006 16:59:09 +0200
Subject: IDE
In-Reply-To: <edlp29$6uf$1@news4.fe.internet.bosch.com>
References: <edlp29$6uf$1@news4.fe.internet.bosch.com>
Message-ID: <44fee23e$0$22494$626a54ce@news.free.fr>

Aravind wrote:
> hi,
> 
> i am a newbie to python but used with some developement in c++ and VB. Can
> anyone suggest me a good IDE for python for developing apps...? i've seen Qt
> designer.. some of my friends said it can be used for python also but they r
> not sure.

What you're talking about here is a GUI designer tool, not an IDE. GUI
designer tools are bound to a particular GUI toolkit, so you need to
choose your GUI toolkit too. There are some GUI toolkits available for
Python, the most used being TK (the one in the stdlib), wxWidget (a C++
portable toolkit running on Windows/Unices/MacOS X) and GTK (a C toolkit
initially written for Linux, but there's a Windows port AFAIK), with the
corresponding bindings for Python resp. Tkinter, wxPython and PyGTK.
QTDesigner is for QT, another GUI toolkit running on bowth Windows and
Linux - but there are (was) some licencing limitations on Windows.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From dasn at bluebottle.com  Sat Sep  2 09:21:29 2006
From: dasn at bluebottle.com (Dasn)
Date: Sat, 2 Sep 2006 08:21:29 -0500
Subject: how to remove n bytes in a file?
Message-ID: <200609021321.k82DLTnO005030@fe10.bluebottle.com>

Hi.
Suppose we have a very large file, and wanna remove 'n' bytes in the
middle of the file. My thought is:
1, read() until we reach the bytes should be removed, and mark the
position as 'pos'.
2, seek(tell() + n) bytes
3, read() until we reach the end of the file, into a variable, say 'a'
4, seek(pos) back to 'pos'
5, write(a)
6, truncate()

If the file is really large, the performance may be a problem.
Is there a clever way to finish? Could mmap() help? Thx



From http  Wed Sep 27 21:02:42 2006
From: http (Paul Rubin)
Date: 27 Sep 2006 18:02:42 -0700
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
	<mailman.845.1159401951.10491.python-list@python.org>
	<roy-491DC0.20514927092006@reader2.panix.com>
Message-ID: <7xejtwkdl9.fsf@ruckus.brouhaha.com>

Roy Smith <roy at panix.com> writes:
> The problem is, if the complex features are there, people will use them.  
> On any large project, there will always be some people who revel in using 
> every obscure feature of a language.  That forces everybody else on the 
> team (and all future members of the team) to know (or learn) those features 
> in order to be able to use and maintain the code base.

On any large project, there tends to be one person who understands any
particular piece of the code in it and is generally in charge of it;
any requests for changes affecting that file usually get routed to
that person.  Maybe another person or two has had their hand in it at
one time or another and could catch up on it if they needed to.
Everybody else has their own area that they stay on top of, and have
little clue about the other parts.  In the case of metaclasses, there
might be some important class that uses special metaclasses and is
maintained by an expert.  Other people simply use that class and make
calls to it but don't have to mess with it very often.  That is what
modularity is about.

Decorators are another matter, but they aren't really confusing
like metaclasses, and are useful in a lot of places.


From gagsl-py at yahoo.com.ar  Mon Sep 18 21:30:56 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 18 Sep 2006 22:30:56 -0300
Subject: win32com InvokeTypes is None
In-Reply-To: <1158593577.641919.154600@m7g2000cwm.googlegroups.com>
References: <1158593577.641919.154600@m7g2000cwm.googlegroups.com>
Message-ID: <7.0.1.0.0.20060918222949.04561d30@yahoo.com.ar>

At Monday 18/9/2006 12:32, SS Hares wrote:

>I'm encountering an issue where the InvokeTypes method is returning
>None and I'm unable to Dispatch a particular COM object from

I think you will get better responses if you post on 
http://mail.python.org/mailman/listinfo/python-win32



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From jgodoy at gmail.com  Sat Sep 30 08:37:49 2006
From: jgodoy at gmail.com (Jorge Godoy)
Date: Sat, 30 Sep 2006 09:37:49 -0300
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu>
Message-ID: <87k63ly1gi.fsf@gmail.com>

Antoine De Groote <antoine at vo.lu> writes:

> Hello,
>
> Can anybody tell me the reason(s) why regular expressions are not built into
> Python like it is the case with Ruby and I believe Perl? Like for example in
> the following Ruby code
>
> line = 'some string'
>
> case line
>   when /title=(.*)/
>     puts "Title is #$1"
>   when /track=(.*)/
>     puts "Track is #$1"
>   when /artist=(.*)/
>     puts "Artist is #$1"
> end
>
> I'm sure there are good reasons, but I just don't see them.
>
> Python Culture says: 'Explicit is better than implicit'. May it be related to
> this?

See if this isn't better to read:

================================================================================
def print_message(some_str):
    if some_str.startswith('track='):
        print "Your track is", some_str[6:]
    elif some_str.startswith('title='):
        print "It's a title of", some_str[6:]
    elif some_str.startswith('artist='):
        print "It was played by", some_str[7:]
    else:
        print "Oops, I dunno the pattern for this line..."
    return

for line in ['track="My favorite track"', 'title="My favorite song"',
             'artist="Those Dudes"', 'Something else']:
    print_message(line)
================================================================================

Expected output:

================================================================================
Your track is "My favorite track"
It's a title of "My favorite song"
It was played by "Those Dudes"
Oops, I dunno the pattern for this line...
================================================================================


I came from Perl and was used to think with regular expressions for
everything.  Now I rarely use them.  They aren't needed to solve most of the
problems. 

-- 
Jorge Godoy      <jgodoy at gmail.com>


From bignose+hates-spam at benfinney.id.au  Tue Sep 26 19:04:48 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 27 Sep 2006 09:04:48 +1000
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<4519a3a2$0$5108$afc38c87@news.optusnet.com.au>
Message-ID: <87bqp2nsa7.fsf@benfinney.id.au>

Richard Jones <richardjones at optushome.com.au> writes:

> John Salerno wrote:
> > But what if you are an expert Python program and have zero clue
> > about other languages? Can you still earn a living that way, or do
> > most/all companies require multiple language proficiency?
>
> These are separate questions. I know a dozen languages but I'm only
> required to know Python for my day job.

That may be the only technology skill listed on the job description,
but I'm betting you would be unable to perform satisfactorily if
Python was truly the only programming language you knew.

I've worked with you, if I'm not mistaken, and your Python skill is
only one technology skill of many that contribute to why an employer
would choose you. That they focus on Python skill in the job advert
doesn't change my opinion that they won't find what they're looking
for in a Python-only expert.

-- 
 \      "The judge asked, 'What do you plead?' I said, 'Insanity, your |
  `\         honour. Who in their right mind would park in the passing |
_o__)                                        lane?'"  -- Steven Wright |
Ben Finney



From m.errami at gmail.com  Mon Sep 25 12:51:52 2006
From: m.errami at gmail.com (m.errami at gmail.com)
Date: 25 Sep 2006 09:51:52 -0700
Subject: How to close the DOS Shell when starting a python script
In-Reply-To: <mailman.538.1159119450.10491.python-list@python.org>
References: <1158986228.279870.131610@i3g2000cwc.googlegroups.com>
	<1158987807.349057.217150@e3g2000cwe.googlegroups.com>
	<mailman.538.1159119450.10491.python-list@python.org>
Message-ID: <1159203112.712217.54910@i3g2000cwc.googlegroups.com>


Wildemar Wildenburger wrote:
> Paddy wrote:
> > Rename the .py file with extension .pyw.
> > - Paddy.
> >
> To elaborate: This works because, by default, .py files are associated
> with python.exe and .pyw files are associated with pythonw.exe, the
> latter not opening a console window.
> You can actually run a .py file with pythonw.exe without opening a console.
> 
> wildemar


Paddy and Wildemar. Thank you. That was easy!

M.E.



From sjmachin at lexicon.net  Sun Sep 17 10:12:30 2006
From: sjmachin at lexicon.net (John Machin)
Date: 17 Sep 2006 07:12:30 -0700
Subject: matplotlib: TypeError: a float is required
In-Reply-To: <eejkba$qqn$1@online.de>
References: <eejesq$guv$1@online.de>
	<1158498950.458578.302140@i42g2000cwa.googlegroups.com>
	<eejkba$qqn$1@online.de>
Message-ID: <1158502350.209430.173600@e3g2000cwe.googlegroups.com>


Andi Clemens wrote:
>
> All examples were taken from the matplotlib-homepage but they won't work
> on my installation and I don't know why.
> You point out that "left and height are Numeric arrays", and that is
> exactly what they are, so what am I missing?

Looks to me like for "height" you are passing in menMeans which is a
tuple containing integers. The standard deviation args have the same
problem

>
> I tried nearly 10 examples from different websites and tutorials and
> none of them worked!

Care to point me at the smallest other example that didn't work? Did
you copy/paste the example or did you retype it? Does "not work" mean
each gave the same error from the same line of code in Numeric? If not,
is there any pattern that you can detect?



From johnjsal at NOSPAMgmail.com  Tue Sep 26 11:47:59 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 26 Sep 2006 15:47:59 GMT
Subject: ultra newbie question (don't laugh)
In-Reply-To: <1159284088.601244.6500@e3g2000cwe.googlegroups.com>
References: <TjaSg.26$1n3.125@news.tufts.edu>
	<1159284088.601244.6500@e3g2000cwe.googlegroups.com>
Message-ID: <PYbSg.27$1n3.411@news.tufts.edu>

George Sakkis wrote:

> To start with your last question, yes, they probably would, *IF* all
> you need to do is take data from the user (through a GUI, command line,
> etc.) and store them in some persistent state (text file, pickle, db,
> etc.). In practice, chances are you'll need to do something more with
> the data; I mean, what's the point in just storing data without using
> them somehow ? Using the data is the core of an application, so the
> question you should be able to answer beforehand is "what do I want to
> do with all these data?". Compute statistics ? Print reports ? Create a
> social network type of app ? All of the above ? You get the point.

Thanks for the advice guys! OOP seems like a good idea, and besides it 
can't hurt to experiment with it even if I don't necessarily need it. 
I'll give this a shot and maybe post the code later and let you all tear 
it apart. :)


From skip at pobox.com  Thu Sep  7 14:32:08 2006
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 7 Sep 2006 18:32:08 +0000 (UTC)
Subject: Random image downloader for newsgroups (first script)
References: <5lYLg.8769$a9.2590@fe2.news.blueyonder.co.uk>
	<4mb60kF5cta3U2@uni-berlin.de>
Message-ID: <loom.20060907T203118-304@post.gmane.org>

> > SERVER = "news.server.co.uk" #Insert news server here
> > GROUP  = "alt.binaries.pictures.blah" #newsgroup will go here
> 
> Just why do I imagine there will be an adult newsgroup in the end....?

I can see the freshmeat announcement now: "Random Boob Visualizer 1.0"...

Skip




From ilias at lazaridis.com  Fri Sep 22 15:11:35 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Fri, 22 Sep 2006 22:11:35 +0300
Subject: String Pattern Matching: regex and Python regex documentation
In-Reply-To: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
Message-ID: <45143567.2000903@lazaridis.com>

[followup to c.l.py]

Xah Lee wrote:
> the Python regex documentation is available at:
> http://xahlee.org/perl-python/python_re-write/lib/module-re.html
> 
> Note that, i've just made the terms of use clear.
> 
> Also, can anyone answer what is the precise terms of license of the
> official python documentation? The official python.org doc site is not
> clear.

I would be interested in this information, too.

> Note also, that the regex syntax used by Perl is the same as Python.
> So, this section
>  http://xahlee.org/perl-python/python_re-write/lib/re-syntax.html
> which contains clear explanation of regex syntax, will be of interest
> to Perl programers as well.
...

Your tutorial has helped me to write my first regular expression:

http://dev.lazaridis.com/base/changeset/60

your notes about documentation are interesting, too:

http://xahlee.org/perl-python/re-write_notes.html

I have some notes, too:

http://case.lazaridis.com/wiki/Docu

-

I would like to read more on your website, but the usability is 
terrible, mainly due to the missing navigation.

What about an exchange?

I assist you with the navigation. you will just need apache 
server-side-include and one file "navigation.html", which will contail 
all of the navigation, very simple.

And you make an real life example for a python regular expression use-case:

i want to scan a text for this line:

[[CustomAttributes(this=4,that=34,name='peter')]]

picking "this=4" ...

and add the attributes to an object.

object = addCustomAttributes(text)

(ok, the regex part would be enouth).

.

-- 
http://lazaridis.com


From kevin.smith at themorgue.org  Sun Sep  3 14:19:20 2006
From: kevin.smith at themorgue.org (Jet Jaguar)
Date: 3 Sep 2006 11:19:20 -0700
Subject: Setting custom folder icon in OS X?
Message-ID: <1157307560.604101.27960@p79g2000cwp.googlegroups.com>

I'm trying to find a way to set a custom folder icon in OS X.  I
thought that Applescript would be able to do it, but apparently it
can't.  Is there anything in the Macintosh libraries of Python that
will allow me to take an image file (e.g., jpeg, png, tiff, etc.) and
set it as the icon for a folder?

Kevin D. Smith



From mensanator at aol.com  Tue Sep 12 12:31:54 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 09:31:54 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <mailman.357.1158071054.5279.python-list@python.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
Message-ID: <1158078714.772319.52690@i42g2000cwa.googlegroups.com>


Mike Owens wrote:
> On 11 Sep 2006 21:35:28 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
> > Mike Owens wrote:
> > > On 11 Sep 2006 18:23:50 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
> > >
> > > > Can you run your car on diesel fuel?
> > > >
> > > > Why not?
> > > >
> > > > Because your car's specification says to use gasoline?
> > > >
> > > > If your car has been designed to run on diesel, you shouldn't
> > > > be saying it has gasoline engine. Duh.
> > >
> > > No but you can still call it a car with an engine, just as SQLite is a
> > > SQL database, with an SQL engine.
> >
> > Seperate the data from the engine and what have you got?
> > Data with dynamic typing. Data that can't be migrated to
> > a "real" SQL database because you'll get type mismatches
> > when strings are inserted into numeric fields. The type affinity
> > kluge won't help there, will it?
>
> Did you even read my original post? Or did you just completely miss the point?
>
> > It's not the job of the System Test Engineer to design things.
> > It's his job to find fault with everything. I just happen to be very
> > good at finding faults with things.
>
> And apparently not very good at providing any constructive solutions.
>
> > But no one appreciates my finding those faults.
>
> No one appreciates the tone in which you report these alleged faults,
> necessarily agrees with the faults that you find, nor elected you
> system test engineer of the SQLite project.
>
> > > It calls for other things that many databases don't implement or
> > > altogether violate as well, so what? Show me how both MS SQL's T-SQL
> > > and Oracle's PL/SQL procedure languages are so standards compliant
> > > that you can use the same procedure code in both databases. You can't
> > > -- precisely because they ignore or outright violate parts of the
> > > standard as well. What's your position on that? Do some Googling and
> > > you can easily find 18 ways that Oracle's PL/SQL deviates from the
> > > standard. And T-SQL is plainly nowhere close.
> >
> > And how many of those systems use dynamic typing?
>
> And how many conform to the standard?
>
> > Name one where the documentation claims the SQL Language
> > Specification is a bug.
>
> Name one that conforms to the standard.
>
> > And a lot of people go to chiropractors. And chiropractors are
> > nice intelligent people with degrees. And the therapy provided
> > does good.
> >
> > Nevertheless, the theory on which it's based is quackery.
>
> To use your specious analogy, it represents another way of doing
> things, which you admit yourself works. That's your justification for
> calling Richard Hipp a crackpot?

What was Richard Hipp's justification for slandering the
writers of the SQL Language Specification?

>
> > > It's clear. You're just way too smart for SQLite.
> >
> > Did you see my solution to Rick Shepard's problem in the
> > thread "Parsing String, Dictionary Lookups, Writing to
> > Database Table"?
>
> The point being? -- you can write Python code and feel entitled to
> condescending and rude?

Is there anything more rude than describling the SQL Language
Specification as a bug that needs to be fixed?



From george.sakkis at gmail.com  Mon Sep  4 11:14:46 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 4 Sep 2006 08:14:46 -0700
Subject: replace deepest level of nested list
References: <5lWKg.17116$CL6.8808@trnddc06>
Message-ID: <1157382886.844650.42840@m73g2000cwd.googlegroups.com>

David Isaac wrote:

> I have a list of lists, N+1 deep.
> Like this (for N=2):
> [[['r00','g00','b00'],['r01','g01','b01']],[['r10','g10','b10'],['r11','g11'
> ,'b11']]]
>
> I want to efficiently produce the same structure
> except that the utlimate lists are replaced by a chosen (by index) item.
> E.g.,
> [['r00','r01'],['r10','r11']]
>
> N is not known ahead of time.
>
> Suggestions?
>
> Thanks,
> Alan Isaac

Numeric/Numpy is ideal for this:



from Numeric import array



def slicelist(nestedlist,index):

    a = array(nestedlist,'O')

    # return the slice a[:,:,...,:,index]

    fullindex = [slice(None)] * len(a.shape)

    fullindex[-1] = index

    return a[fullindex].tolist()


George



From exarkun at divmod.com  Thu Sep 21 10:25:32 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Thu, 21 Sep 2006 10:25:32 -0400
Subject: How to return an "not string' error in function?
In-Reply-To: <4512A10C.2050407@tim.thechases.com>
Message-ID: <20060921142532.1717.702608284.divmod.quotient.55844@ohm>

On Thu, 21 Sep 2006 09:26:20 -0500, Tim Chase <python.list at tim.thechases.com> wrote:
>> def test(s):
>>        if type(s) != ? :
>>           return
>> #So here I want establish a situation about that if <s> is not string
>> #then <return>, but how should write the <?> ?
>> #Or is there any other way to do it?
>
> >>> isinstance("hello", basestring)
>True
> >>> isinstance(u"hello", basestring)
>True
>
>This will return true for both regular strings and for unicode
>strings.  If that's a problem, you can use
>
> >>> import types
> >>> isinstance("hello", types.StringType)
>True
> >>> isinstance(u"hello", types.StringType)
>False
> >>> isinstance("hello", types.UnicodeType)
>False
> >>> isinstance(u"hello", types.UnicodeType)
>True
>
>...or, if you don't want to qualify them with "types." each time,
>you can use
>
> >>> from types import StringType, UnicodeType
>
>to bring them into the local namespace.

    >>> str is types.StringType
    True
    >>> unicode is types.UnicodeType
    True

Jean-Paul


From nick at craig-wood.com  Wed Sep 27 11:30:03 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Wed, 27 Sep 2006 10:30:03 -0500
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<slrnehkc4a.smm.nick@irishsea.home.craig-wood.com>
	<Xns984B665F9485Cduncanbooth@127.0.0.1>
Message-ID: <slrnehl355.2to.nick@irishsea.home.craig-wood.com>

Duncan Booth <duncan.booth at invalid.invalid> wrote:
>  Nick Craig-Wood <nick at craig-wood.com> wrote:
> 
> > In python when making __slots__ or module.__all__ you end up typing
> > lists of objects or methods and they turn out like this which is quite
> > a lot of extra typing
> > 
> >   __slots__ = ["method1", "method2", "method3", "method4", "method5"]
> 
>  For __all__ you can use a decorator to avoid retyping the function name at 
>  all. e.g.
> 
>  def public(f):
>      all = f.func_globals.setdefault('__all__', [])
>      all.append(f.__name__)
>      return f
> 
>  @public
>  def foo(): pass

Nice one!

>  I don't use __slots__ much at all, and if you'd said "attribute1" etc. I'd 
>  have understood, but I'm really curious why would you be listing any 
>  methods in __slots__?

Those should of course have been attributes - I noticed immediately
after posting ;-)

Aside: __slots__ is only really useful when you've created so many
objects you are running out of memory and you need to optimise memory
usage a bit.  We got our app down to 1/3 of the memory usage by
putting in three __slots__

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From sjmachin at lexicon.net  Sat Sep  9 04:09:51 2006
From: sjmachin at lexicon.net (John Machin)
Date: 9 Sep 2006 01:09:51 -0700
Subject: best split tokens?
In-Reply-To: <mailman.197.1157767450.5279.python-list@python.org>
References: <1157748108.119906.315790@e3g2000cwe.googlegroups.com>
	<mPkMg.9534$yO7.2245@newssvr14.news.prodigy.com>
	<mailman.182.1157751737.5279.python-list@python.org>
	<1157756531.475390.100210@b28g2000cwb.googlegroups.com>
	<mailman.197.1157767450.5279.python-list@python.org>
Message-ID: <1157789391.693000.43470@h48g2000cwc.googlegroups.com>

Tim Chase wrote:

>
> I had a hard time comin' up with any words I'd want to call
> "words" where the additional non-word glyph (apostrophe, dash,
> etc) wasn't 'round the middle of the word. :)
>
> Any more crazy examples? :)
> 

'ey, 'alf a mo, wot about when 'enry 'n' 'orace drop their aitches?



From aahz at pythoncraft.com  Fri Sep 29 19:40:23 2006
From: aahz at pythoncraft.com (Aahz)
Date: 29 Sep 2006 16:40:23 -0700
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<efjeus$3nv$1@wake.carmen.se>
Message-ID: <efkat7$10p$1@panix3.panix.com>

In article <efjeus$3nv$1 at wake.carmen.se>,
Magnus Lycka  <lycka at carmen.se> wrote:
>
>In other words, Python has to a significant taken over the role Perl
>had. Perl once succeeded because it was in the right place at the
>right time, but it's failed in the long ruin because it can't handle
>the complexity of real world applications when they scale. 

+1 typo of the week!  ;-)
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep 28 14:14:45 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 28 Sep 2006 20:14:45 +0200
Subject: using the email module
References: <451bfcca$1@nntp.zianet.com>
Message-ID: <slrneho48k.c10.sybrenUSE@schuimige.stuvel.eu>

Erik Johnson enlightened us with:
> When I run this and view the email I receive in MS Outlook Express,
> what I see is the HTML rendered in the body of the message, my body
> is not seen anywhere and there is no attachment.

If the HTML document should really be attached, give it a
    Content-Disposition: Attachment
header. Check out the accompanying headers as well, by simply emailing
yourself an attached HTML file and examining the email source.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From steve at holdenweb.com  Sat Sep  9 07:12:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 09 Sep 2006 12:12:32 +0100
Subject: Building Python Based Web Application
In-Reply-To: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
Message-ID: <edu7hu$gq2$1@sea.gmane.org>

James Stroud wrote:
> Hello All,
> 
> I am interested in setting up a modest invoicing system for some 
> consulting I am doing. I like the idea of managing this on the web and 
> creating invoices and printing them from a browser. However, I'm not 
> really sure where to start. I've played with some CMS applications, but 
> they seem more for blogging (mamba, wordpress, etc.). Ideally, I would 
> like to interface with mySQL (or whatever the favorite web-flavor 
> database app is these days). I would like to be able to use my python 
> skills.
> 
> I confident that if I set out to write this from scatch, I will be 
> seriously re-inventing the wheel, perhaps several times over.
> 
> So, my question is, does anyone know of a book and/or some kind of 
> framework that would make the best sense for what I am describing here? 
> I've heard of Zope, but I would like to make sure its appropriate for 
> the job before I spend 2 or 3 days getting acquainted with it. I'm adept 
> at HTML, python, CSS, python-CGI, and interfacing with mySQL through 
> DBI. I'm sure I could get something to work with these skills, but I 
> want to minimize wheel re-invention as much as possible.
> 
> Basically, I want a jump start on data-base oriented web development 
> with a focus on applying my python skills.
> 
> Any suggestions will be greatly appreciated.
> 
> James
> 
Once you solve the web data maintenance part (which I do using wxPython 
on the desktop) you might be interested in my Python db-to-pdf invoice 
generator, which I've been using now for several years. If so, drop me a 
line and I'll send you a copy.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From haraldarminmassa at gmail.com  Tue Sep 19 05:32:40 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 19 Sep 2006 02:32:40 -0700
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <eeobgu$fim$1@wake.carmen.se>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
	<mailman.45.1158171218.10491.python-list@python.org>
	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>
	<2C6Og.1076$UG4.672@newsread2.news.pas.earthlink.net>
	<mailman.67.1158218719.10491.python-list@python.org>
	<eeobgu$fim$1@wake.carmen.se>
Message-ID: <1158658360.356164.227040@b28g2000cwb.googlegroups.com>


Magnus Lycka schrieb:
> >     http://effbot.org/zone/python-objects.htm
> > may be useful for those who haven't already seen it.
>
>Shouldn't it be incorporated into the standard tutorial?
>I think it's very helpful for people who are used
> to the way C etc handles variables.

That would also be a good headline. "information for those coming from
C", and it should be possible to grow similiar sections for those
comming from Java or PERL.

At least it belongs into the FAQ :)

Harald



From steve at holdenweb.com  Wed Sep 13 10:38:03 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 13 Sep 2006 10:38:03 -0400
Subject: eval(repr(object)) hardly ever works
In-Reply-To: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <ee9530$lj9$2@sea.gmane.org>

Matthew Wilson wrote:
> I understand that idea of an object's __repr__ method is to return a
> string representation that can then be eval()'d back to life, but it
> seems to me that it doesn't always work. 
> 
> For example it doesn't work for instances of the object class:
> 
> In [478]: eval(repr(object()))
> ------------------------------------------------------------
>    File "<string>", line 1
>      <object object at 0xf233e8>
>      ^
> SyntaxError: invalid syntax
> 
> It seems to work for types like integers and dictionaries and lists,
> but not for much else.
> 
That's intentional. Would you have it return the code of all the methods 
when you take the repr() of a class?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From usenet at vfx.org.uk  Thu Sep 28 14:32:49 2006
From: usenet at vfx.org.uk (Mike Playle)
Date: Thu, 28 Sep 2006 19:32:49 +0100
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.847.1159402807.10491.python-list@python.org>
	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>
	<slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <pan.2006.09.28.18.32.49.41495@vfx.org.uk>

On Thu, 28 Sep 2006 17:36:02 +0200, Sybren Stuvel wrote:

> Mike Playle enlightened us with:
>> Having installed it all over the shop, how can you be sure that only 5
>> people are using it at any one time?
> 
> Write the software in such a way that it needs a certificate on a
> smartcard, then supply the company with five smartcards.

And 150 smartcard readers?

Of course USB dongles would work just as well and wouldn't
need special readers, but really this is just a hardware
implementation of the same idea - dongles are just as hated
as FlexLM, and for all the same reasons :)

Mike



From michele.simionato at gmail.com  Mon Sep  4 07:07:31 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 4 Sep 2006 04:07:31 -0700
Subject: What are super()'s semantics?
In-Reply-To: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
Message-ID: <1157368051.502565.122930@i42g2000cwa.googlegroups.com>

Mike Krell wrote:
> BTW, the official docs are even worse in this regard.  AFAICT, they
> essentially say that super() returns a superclass with no discussion of
> diamond inheritance or any hint of how the semantics of super(B,
> self).met() would be any different than those of A.met(self).
>
> This seems like very important functionality to be documented in the
> official docs so poorly.

Well, you are right. I remember being fooled myself. 'super' does NOT
return a
superclass. Actually, there is no meaningful concept of superclass in a
multiple inheritance
world. Anyway, the MRO concept is documented here:

http://www.python.org/download/releases/2.3/mro/

(yes, it is not easy to find this link in python.org).

                Michele Simionato



From kay.schluehr at gmx.net  Sat Sep 30 15:01:04 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 30 Sep 2006 12:01:04 -0700
Subject: Escapeism
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>
	<slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>
	<1159635727.840033.169540@m73g2000cwd.googlegroups.com>
	<mailman.1009.1159638919.10491.python-list@python.org>
Message-ID: <1159642864.799937.247960@h48g2000cwc.googlegroups.com>

Steve Holden wrote:
> Kay Schluehr wrote:
> > Sybren Stuvel wrote:
> >
> >>Kay Schluehr enlightened us with:
> >>
> >>>Usually I struggle a short while with \ and either succeed or give up.
> >>>Today I'm in a different mood and don't give up. So here is my
> >>>question:
> >>>
> >>>You have an unknown character string c such as '\n' , '\a' , '\7' etc.
> >>>
> >>>How do you echo them using print?
> >>>
> >>>print_str( c ) prints representation '\a' to stdout for c = '\a'
> >>>print_str( c ) prints representation '\n' for c = '\n'
> >>>...
> >>>
> >>>It is required that not a beep or a linebreak shall be printed.
> >>
> >>try "print repr(c)".
> >
> >
> > This yields the hexadecimal representation of the ASCII character and
> > does not simply echo the keystrokes '\' and 'a' for '\a' ignoring the
> > escape semantics. One way to achieve this naturally is by prefixing
> > '\a' with r where r'\a' indicates a "raw" string. But unfortunately
> > "rawrification" applies only to string literals and not to string
> > objects ( such as c ). I consider creating a table consisting of pairs
> > {'\0': r'\0','\1': r'\1',...}  i.e. a handcrafted mapping but maybe
> > I've overlooked some simple function or trick that does the same for
> > me.
> >
> No, you've overlooked the fact that if you print the string containing
> the two characters "backslash" and "lower case a" then it will print
> exactly those two characters. See:
>
> In [30]: c = "\\a"
>
> In [31]: len(c)
> Out[31]: 2
>
> In [32]: print c
> \a

I'm interested in the transition between two literals from which one is
a string literal containing \ as a "meta character" s.t. '\a' has
actually length 1 and is beep when printed to stdout and its "raw" form
without a meta character interpretation of \ that leads to the result
you described. Using the string prefix r to '\a' indicates the raw form
to the compiler. But there seems to be no runtime counterpart. I've
suggested a naive implementation such as

def rawform(c):
     return {'\a': r'\a'}[c]

Here the function returns for the single input character '\a' the two
character raw form by means of escaping \ ( and raises a KeyError
exception otherwise ).

>>> c = '\a'
>>> print rawform(c)
\a

This has the same effect as writing:
>>> c = r'\a'
>>> print c
\a

But there is some ambiguity due to the the fact that applying '\7' to
rawform() yields r'\a' and not r'\7'. So one needs more specification
for disambiguation using e.g. an extra parameter.



From skip at pobox.com  Tue Sep  5 13:09:03 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 12:09:03 -0500
Subject: threading support in python
In-Reply-To: <edk8r7$qp$1@sea.gmane.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.7.1157438963.5279.python-list@python.org>
	<1157467255.633817.3740@m73g2000cwd.googlegroups.com>
	<17661.37027.891231.814161@montanaro.dyndns.org>
	<edk8r7$qp$1@sea.gmane.org>
Message-ID: <17661.44847.579165.784506@montanaro.dyndns.org>


    Steve> Given the effort that GIL-removal would take, I'm beginning to
    Steve> wonder if PyPy doesn't offer a better way forward than CPython,
    Steve> in terms of execution speed improvements returned per
    Steve> developer-hour.

How about execution speed improvements per hour of discussion about removing
the GIL? ;-)


Skip


From rogue_pedro at yahoo.com  Fri Sep 15 00:28:52 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 14 Sep 2006 21:28:52 -0700
Subject: Converting a varargs tuple to a list - a definite pitfall for new
	comers to Python
In-Reply-To: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
References: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
Message-ID: <1158294531.990931.201190@b28g2000cwb.googlegroups.com>


metaperl.etc at gmail.com wrote:
> The following program does not work if you uncomment     #lis =
> ["xmms2"] + list(args)
>
> Evidently Python is opting for the nullary constructor list() as
> opposed to the other one which takes a sequence. But no newcomer would
> know this. And the Python docs dont give a good example of dealing with
> taking a sequence of args and converting it to a list.
>
> I must've spent 40 minutes looking through my ora books, googling and
> irc'ing in vane on this.
>
> import subprocess
>
> def xmms2(*args):
>     #lis = ["xmms2"] + list(args)
>     lis = ["xmms2"] + [a for a in args]
>     output = subprocess.Popen(lis,
> stdout=subprocess.PIPE).communicate()[0]
>     return output.splitlines()
>
> def list():
>     lis = xmms2('list')
>     playtime_str = lis.pop()
>     (total, playtime, time_str) = playtime_str.split()
>     (h,m,s) = time_str.split(':')
>     lis.pop()
>     return dict( playlist = lis, playtime = (int(h), int(m), int(s)) )
>
> if __name__ == '__main__':
>     list()


|>> def xmms2(*args):
...     lis = ["xmms2"] + list(args)
...     return lis
...
|>> xmms2('list')
['xmms2', 'list']
|>>
|>> xmms2('list', 'bananas', 'apples')
['xmms2', 'list', 'bananas', 'apples']


It must be something else?

Also, "nullary"?



From mdsteele at gmail.com  Sat Sep 23 16:51:29 2006
From: mdsteele at gmail.com (mdsteele at gmail.com)
Date: 23 Sep 2006 13:51:29 -0700
Subject: Strange __future__ behavior in Python 2.5
Message-ID: <1159044689.234403.216460@m7g2000cwm.googlegroups.com>

My understanding of the __future__ statement is that you may say
something like:

from __future__ import foo, bar

to enable more than one feature.  However, this does not seem to be
working properly in 2.5; it behaves as expected when typed into the
interactive interpreter, but not when it is in a module.  When I try to
import the following module:

from __future__ import with_statement, division, absolute_import
def bar():
    print 5/3
    with open('asdf') as f:
        for line in f: print line.strip()

I get a warning that 'with' will soon be a reserved keyword, and a
SyntaxError on the line with the with statement, so obviously, the
__future__ statement is not working.  When I change the first line to:

from __future__ import with_statement
from __future__ import division,absolute_import

then the with statement works fine.  However, the true division also
works fine, so apparently making multiple __future__ imports on one
line works for division, but not for with_statement.

Is this a bug, or am I misunderstanding something?  I'm using the final
release of Python 2.5 (r25:51918, Sep 19 2006, 08:49:13) on Mac OS X.



From bjobrien62 at gmail.com  Fri Sep 15 13:40:34 2006
From: bjobrien62 at gmail.com (SpreadTooThin)
Date: 15 Sep 2006 10:40:34 -0700
Subject: how do you convert and array of doubles into floats?
Message-ID: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>

I have some code...

import array

a = array.array('d')
f = open('file.raw')
a.fromfile(f, 10)

now I need to convert them into floats (32 bit...) what do i do?



From http  Fri Sep  8 22:25:58 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 19:25:58 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
	<1157762409.805195.231770@m73g2000cwd.googlegroups.com>
	<1157767525.761220.117190@d34g2000cwd.googlegroups.com>
	<1157768144.939694.81730@b28g2000cwb.googlegroups.com>
Message-ID: <7xlkothj2h.fsf@ruckus.brouhaha.com>

"bvdp at xplornet.com" <bvdp at xplornet.com> writes:
> > FWIW, the original loop looked perfectly fine and readable and I'd
> > suggest going with that over these hacked-up listcomp solutions.  Don't
> > use a listcomp just for the sake of using a listcomp.
> 
> Thanks for that, Carl. I think that using the loop is probably what
> I'll end up doing. I had no idea that the listcomp thing would be quite
> a complicated as it is appearing. I had it in my mind that I was
> missing some obvious thing which would create a simple solution :)

I think even if you code a loop, it's still cleaner to use enumerate:


    seq = [2, 3, 1, 9]
    tmp = []
    for i,a in enumerate(seq):
        tmp.extend([i]*a)


From steven.bethard at gmail.com  Mon Sep 11 11:51:04 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 11 Sep 2006 09:51:04 -0600
Subject: best way of testing a program exists before using it?
In-Reply-To: <mailman.256.1157987147.5279.python-list@python.org>
References: <mailman.256.1157987147.5279.python-list@python.org>
Message-ID: <NYmdnZXPYfZ-GJjYnZ2dnUVZ_v2dnZ2d@comcast.com>

Hari Sekhon wrote:
> I am writing a wrapper to a binary command to run it and then do 
> something with the xml output from it.
> 
> What is the best way of making sure that the command is installed on the 
> system before I try to execute it, like the python equivalent of the 
> unix command "which"?

There is the which module:

     http://trentm.com/projects/which/

But I'd probably just try the command and catch the exception, e.g.:

 >>> import subprocess
 >>> try:
...     subprocess.call(['foo'])
... except OSError:
... 	print "you don't have foo installed"
...
you don't have foo installed
 >>> try:
...     subprocess.call(['svm_learn'])
... except OSError:
... 	print "you don't have svm_learn installed"
...
1

STeVe


From thejaswi.puthraya at gmail.com  Sat Sep 16 01:44:28 2006
From: thejaswi.puthraya at gmail.com (theju)
Date: 15 Sep 2006 22:44:28 -0700
Subject: How to change font direction?
In-Reply-To: <1158357516.297252.282020@i42g2000cwa.googlegroups.com>
References: <1158357516.297252.282020@i42g2000cwa.googlegroups.com>
Message-ID: <1158385468.535924.49300@m7g2000cwm.googlegroups.com>

Well here are some self explanatory functions that I've written for
displaying the text vertically and from right to left. As for rotation
gimme some more time and i'll come back to you. Also I don't guarantee
that this is the best method(cos I myself am a newbie), but I can
guarantee you that it works.
Here it goes...

im=Image.open("imgfile.jpg")
draw=ImageDraw.Draw(im)

def verdraw(width,height,spacing,a="Defaulttext"):
	for i in range(0,len(a)):
		draw.text((width,height),a[i],(<options>))
		height+=spacing

def right2leftdraw(width,height,spacing,a="Defaulttext"):
	for i in range(0,len(a)):
		draw.text((width,height),a[len(a)-i-1],(<options>))
		width += spacing

<options> is a 3 field length tuple is mentioned in the PIL-Handbook.
Hope you find it useful
-Theju

Daniel Mark wrote:
> Hello all:
>
> I am using PIL to draw some graphics and I need to draw some texts
> in vertical direction rather than the default left-to-right horizontal
> direction.
> 
> Is there anyway I could do that?
> 
> 
> Thank you
> -Daniel



From fredrik at pythonware.com  Thu Sep 21 05:43:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 21 Sep 2006 11:43:49 +0200
Subject: Python Threading
In-Reply-To: <0v6Qg.13962$bM.6926@newsread4.news.pas.earthlink.net>
References: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>
	<0v6Qg.13962$bM.6926@newsread4.news.pas.earthlink.net>
Message-ID: <eetmsl$cfu$1@sea.gmane.org>

Dennis Lee Bieber wrote:

> ... slightly
> simpler to use without subclassing (at the simplest level, you just pass
> the function that is to be run, and a list of the arguments/parameters
> it needs, to the threading creation class).

that's exactly how thread.start_new_thread(func, args) works, of course, 
so I'm not sure that's much of an argument.

</F>



From bayerj at in.tum.de  Mon Sep  4 11:43:36 2006
From: bayerj at in.tum.de (bayerj)
Date: 4 Sep 2006 08:43:36 -0700
Subject: threading support in python
In-Reply-To: <mailman.10337.1157383940.27775.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<mailman.10337.1157383940.27775.python-list@python.org>
Message-ID: <1157384616.635503.309750@e3g2000cwe.googlegroups.com>

Hi,

You might want to split your calculation onto different
worker-processes.

Then you can use POSH [1] to share data and objects.
You might even want to go a step further and share the data via
Sockets/XML-RPC or something like that. That makes it easy to throw
aditional boxes at a specific calculation, because it can be set up in
about no time.
You can even use Twisted Spread [2] and its perspective broker to do
this on a higher level.

If that's not what you want, you are left with Java I guess.

Regards,
-Justin

[1] http://poshmodule.sourceforge.net/
[2] http://twistedmatrix.com/projects/core/documentation/howto/pb.html



From python.list at tim.thechases.com  Thu Sep 28 10:31:00 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Thu, 28 Sep 2006 09:31:00 -0500
Subject: remove the last character or the newline character?
In-Reply-To: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
References: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
Message-ID: <451BDCA4.9020702@tim.thechases.com>

> In [1]: fileName = 'Perfect Setup.txt\n'
> In [2]: fileName = fileName[0:len(fileName)-1)]   # remove the '\n'
> character
> In [3]: fileName
> Out[3]: 'Perfect Setup.txt'
> 
> Question one:
> Does python provide any function that can remove the last character of
> a string?
> I don't know whether or not the method I used is efficient

You're close...

	fileName = fileName[0:-1]

which is the same as

	fileName = fileName[:-1]

which will lop off the last character.  Much nicer than most 
other languages I've used where you have to use the len() trick 
you're using.  Also, it's a common python idiom you'll see 
frequently.

> Question two:
> Does python provide any function that can remove the newline character
> from a string if it exists?

In a discussion on this very matter a while back, I think the 
final verdict was something like

	fileName = fileName.rstrip('\n')

which will strip off *all* the trailing newlines.  In most cases 
(such as "for line in file('foo.txt'):" code), there's only one 
to be stripped, so this works fine.

If you're ornary and want *only* the last '\n' lopped off, you'd 
have to test for it:

	if fileName[-1] == '\n': fileName = fileName[:-1]

There were caveats regarding "\n" vs. "\r\n" line endings, but if 
the file comes in in ascii mode (rather than binary mode), Python 
more or less smart enough to do the translation for you, leaving 
the above code to work in the majority of cases.

-tkc






From willie at jamots.com  Wed Sep 20 01:53:21 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 00:53:21 -0500
Subject: byte count unicode string
Message-ID: <4510D751.8030107@jamots.com>

# What's the correct way to get the
# byte count of a unicode (UTF-8) string?
# I couldn't find a builtin method
# and the following is memory inefficient.

ustr = "example\xC2\x9D".decode('UTF-8')

num_chars = len(ustr)    # 8

buf = ustr.encode('UTF-8')

num_bytes = len(buf)     # 9


# Thanks.



From robert.kern at gmail.com  Fri Sep 29 15:42:23 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 29 Sep 2006 14:42:23 -0500
Subject: another distutils question
In-Reply-To: <451D753E.7060707@harvee.org>
References: <efjmjp$mr2$1@sea.gmane.org> <efjpma$16d$1@sea.gmane.org>
	<451D753E.7060707@harvee.org>
Message-ID: <efjsuo$d73$1@sea.gmane.org>

Eric S. Johansson wrote:
> Robert Kern wrote:
>> Eric S. Johansson wrote:
>>> is there anyway I can, in a setup.py file, set  and internal equivalent 
>>> to the '--install-scripts' commandline option?
>> Please don't. Hard-coding that interferes with the user's decision of where 
>> things should go. Only the user should be making that decision, not the package 
>> author.
> 
>   I understand the concern and if I was making a general purpose 
> package, it would be appropriate to not set the path.  But these are 
> internal commands that shouldn't pollute /usr/bin for a variety of 
> reasons (almost all daemons, friends of daemons and cgi programs).

Okay, if it's just for internal use, then I certainly have no objection. Use a 
setup.cfg file:

   http://docs.python.org/inst/config-syntax.html

Specifically, use something like the following section:

[install]
install_scripts=/path/to/scripts/directory

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From jstroud at mbi.ucla.edu  Thu Sep 28 17:08:15 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 28 Sep 2006 21:08:15 GMT
Subject: best way to get data into a new instance?
In-Reply-To: <j%QSg.44$1n3.417@news.tufts.edu>
References: <j%QSg.44$1n3.417@news.tufts.edu>
Message-ID: <3RWSg.6293$GR.4101@newssvr29.news.prodigy.net>

John Salerno wrote:
> Let's pretend I'm creating an Employee class, which I will later 
> subclass for more specific jobs. Each instance will have stuff like a 
> name, title, degrees held, etc. etc.
> 
> So I'm wondering, is the best way to get all this information into the 
> object to just have a really long __init__ method that takes each argument?
> 
> Does a question like this depend on how the class will be used? I'm 
> trying to construct it in a way that is independent of, say, the GUI 
> interface that will be used, but I can't help but think that if all the 
> data is entered into a GUI, then passed programmatically to the class, 
> then it's no big deal because it happens behind the scenes. But if, for 
> instance, someone manually created a new instance, they would have a ton 
> of arguments to type in each time. Granted, even with the GUI they are 
> basically typing in arguments, but in the manual case you'd have to type 
> in the call to the class, the parentheses, commas, quotes around the 
> strings, etc. (But still, I'm trying not to let a specific interface 
> influence the construction of what should probably be a completely 
> independent class implementation.)
> 
> Thanks.

This assumes that someone will hard-code an instance of your Employee. E.g.:

      e = Employee(Last, First, ID,
                   private_medical_info = 'Has halitosis.')

Will this ever really happen--either by an API user or an end user? 
Probably not for a database of any usefulness at all. Usually records 
will be programatically created (or created through a gui), so it really 
isn't necessary to worry about this case, except maybe for testing. This 
has been my experience. Its probably better to init with the bare 
minimum parameters and focus on how to move information from an external 
source into an already created instance:

     e = Employee(Last, First, ID)
     e.private_medical_info = 'Has halitosis.'

If you are worried about validating field names, maybe use a method:

class Employee(object):
   def __init__(self, Last, First, ID, **kwargs):
     self.Last = Last
     self.First = First
     self.ID = ID
     self._fields = {'Last':'Last Name',
                     'First':'First Name',
                     'ID':'Employee Identification Number',
                     'private_medical_info':'Any source of bad odor.'}
     for (field, value) in kwargs.items():
       self.set_value(field, value)
   def set_value(field, value):
     if not field in self._fields:
       raise ValueError, 'Field "%s" not supported.' % field
     else:
       self.__setattr__(field, value)
   def get_value(field):
     if not field in self._fields:
       raise ValueError, 'Field "%s" not supported.' % field
     else:
       self.__getattribute__(field)


OK, I'll stop. You get the idea.

You will find dealing with external sources the more interesting problem 
anyway.

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From steve at holdenweb.com  Mon Sep 25 01:01:25 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 01:01:25 -0400
Subject: One program in different GUI Toolkits
In-Reply-To: <1159126636.402693.231540@k70g2000cwa.googlegroups.com>
References: <eeqn0i$d8n$1@newsreader2.utanet.at>	<1159011106.418155.118660@m73g2000cwd.googlegroups.com>
	<1159126636.402693.231540@k70g2000cwa.googlegroups.com>
Message-ID: <ef7npk$p8h$1@sea.gmane.org>

metaperl.etc at gmail.com wrote:
> Actually due to lack of documentation and feedback from the mailing
> list, I am fallen out of love with Pythoncard and in love with
> Kiwi/Pygtk. Given the large groundswell support for pygtk, i dont think
> I will be disappointed.
> 
> PyQT looks ultra-slick, but the commercial nature of QT and the design
> tools gives me an icky feeling.
> 
> metaperl wrote:
> 
>>Franz Steinhaeusler wrote:
>>
>>>Hello NG,
>>>
>>>I have a suggestion.
>>>
>>>For simplifying learning or switching between different GUI
>>>Toolkits, I could imagine to have one short clearly presented
>>>program in different GUI Toolkits.
>>
>>>Anybody is interested in implementing in one other GUI?
>>>We could put in on one Python wiki page for example.
>>>
>>
>>Thanks to your post, I have fallen in love with PythonCard. I would be
>>happy to try to implement what you want in that.
> 
> 
In and out of love in eight hours and six minutes? I'm glad I don't have 
a daughter ;-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From where at remyposts.com  Fri Sep 22 18:43:53 2006
From: where at remyposts.com (ian)
Date: Fri, 22 Sep 2006 22:43:53 GMT
Subject: Need some help here
References: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>
	<kaqdnedy87hDUIzYnZ2dnUVZ_umdnZ2d@comcast.com>
Message-ID: <JGZQg.33400$wg.24677@fe1.news.blueyonder.co.uk>


"Frank Drackman" <Frankdrack at yahoo.com> wrote in message 
news:kaqdnedy87hDUIzYnZ2dnUVZ_umdnZ2d at comcast.com...
:
: "Kareem840" <KareemOfweet840 at hotmail.com> wrote in message
: news:1158790201.887958.84700 at k70g2000cwa.googlegroups.com...
: > Hello. Unfortunately, I am in need of money to pay my credit card
: > bills. If you could spare just $1, I would be grateful. I have a Paypal
: > account. Kramer1260 at hotmail.com. I swear this will go to my card
: > balances. Thank you.
: >
:
: Sell your sperm, we don't want you to reproduce.

erm can i just point out the flaw in your suggestion frank... 




From steve at holdenweb.com  Fri Sep 22 15:20:56 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 15:20:56 -0400
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <1158949744.021023.14280@h48g2000cwc.googlegroups.com>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>	<mailman.451.1158926238.10491.python-list@python.org>	<ef0uur$aa1$1@mouse.otenet.gr>	<1158940317.354847.323490@h48g2000cwc.googlegroups.com>	<mailman.469.1158942921.10491.python-list@python.org>
	<1158949744.021023.14280@h48g2000cwc.googlegroups.com>
Message-ID: <ef1d18$pcc$2@sea.gmane.org>

Ilias Lazaridis wrote:
> Steve Holden wrote:
> 
>>Paul Boddie wrote:
>>
>>>Ilias Lazaridis wrote:
>>
>>[...]
>>
>>>>Have those old style classes any benefits?
>>>
>>>
>>>That you don't have to write the bizarre conceptual accident that is
>>>"(object)" when declaring a "top-level" class?
>>>
>>
>>Though of course the easiest way to enforce your classes to new style is
>>to begin each module with
>>
>>__metaclass__ = type
> 
> 
> I assume placing this in the central site import (e.g.
> sitecustomize.py) would collapse python? (I don't want to try it, maybe
> someone has an isolated instance available for trials).
> 
I don't think it would "collapse Python", but since each module requires 
its own __metaclass__ setting it certainly wouldn't change much.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ray_usenet at yahoo.com  Sun Sep  3 22:41:06 2006
From: ray_usenet at yahoo.com (Ray)
Date: 3 Sep 2006 19:41:06 -0700
Subject: Timeline for Python?
In-Reply-To: <1157097423.946429.261370@p79g2000cwp.googlegroups.com>
References: <mailman.10185.1157035875.27775.python-list@python.org>
	<1157097423.946429.261370@p79g2000cwp.googlegroups.com>
Message-ID: <1157337666.055905.225780@h48g2000cwc.googlegroups.com>


crystalattice wrote:
> I'd write for 2.4, even though 2.5 should be coming out "shortly".
> There aren't many significant changes to the whole language between 2.4
> and 2.5.  Probably the best thing is write for 2.4 and have a sidenote
> stating where 2.5 operates differently.

Python in a Nutshell 2nd edition already covers 2.5. Now if I can get
my hands on a copy........... for some reason it's always out of stock!
:(

>
> The Python 3 timeline is almost a moving target right now; personally,
> I don't think it will be out before next winter.  Maybe a beta but I
> doubt the full version.



From nmiyasato at gmail.com  Mon Sep 18 15:04:14 2006
From: nmiyasato at gmail.com (Nicolas Miyasato)
Date: Mon, 18 Sep 2006 16:04:14 -0300
Subject: python and snmp
Message-ID: <6c3a9f8c0609181204q3c7a2270r281208111358050f@mail.gmail.com>

Hi all, I was just wondering if someone here had any experience with
some of these implementations of the snmp protocol?

pysnmp, libsnmp, snmpy.

Does anybody know of another implementation?

thanks in advance!!!

-- 
miya


From djbpitt+python at pitt.edu  Sun Sep  3 10:17:19 2006
From: djbpitt+python at pitt.edu (David J Birnbaum)
Date: Sun, 03 Sep 2006 10:17:19 -0400
Subject: Python-list Digest, Vol 36, Issue 33
In-Reply-To: <mailman.37030.1157273103.27774.python-list@python.org>
References: <mailman.37030.1157273103.27774.python-list@python.org>
Message-ID: <44FAE3EF.9060106@pitt.edu>

Dear John (cc python-list),
>> You may find (1) that the file has formfeeds in
>> it or (2) it has r"\f" in in it and you were mistaken about the
>> interpretation or (3) something else.
>>     
> ...
>   
>> Thank you for the quick response. Ultimately I need to remap the "f" in
>> "\f" to something else, so I worked around the problem by doing the
>> remapping first, and I'm now getting the desired result.
>>     
>
> Please reply on-list.
>
> How could you read the file to remap an "f" if you were getting '\0x0C'
> when you tried to read it? Are we to assume that it was case (2) i.e.
> not a Python problem?
>   
Possibly more than anyone else on-list cares to see, but it was case 
(3): I had misdiagnosed the input. The match was failing because I was 
reading the line improperly (when I remapped the "f" I was ... er ... 
inexplicably surprised when I couldn't find it, although it turned out 
to be there when I looked for the remapped value instead of for the 
original "f"). When I tried to troubleshoot it in an interpreter window, 
I misread the results, which is what prompted my inquiry on the list. 
Here's the intepreter diagnosis:

 >>> string1 = "blah \fR40\fC blah"
 >>> string1
'blah \x0cR40\x0cC blah'
 >>> string2 = "blah \\fR40\\fC blah"
 >>> string2
'blah \\fR40\\fC blah'

If I create a file that consists of:

<?xml version="1.0" encoding="UTF-8"?>
<test>
    <line>Hi, there</line>
    <line>blah \fR40\fC blah</line>
    <line>Hi, there</line>
</test>

And then a python script that reads:

import codecs
import re
file = open("test1.xml", "r")
nePat = re.compile("\\\\f.")
for line in file:
    print line
    print nePat.sub("TEST", line)
   
the relevant line comes out as:

<line>blah TEST40TEST blah</line>

which is what I want. That is, the script was, indeed, reading the 
character string correctly, as you suggested, and the substitution that 
I ran into during my test in the interpreter window was a red herring. 
Thanks again for the advice to look more closely.

Best,

David


From vasudevram at gmail.com  Fri Sep 29 11:17:55 2006
From: vasudevram at gmail.com (vasudevram)
Date: 29 Sep 2006 08:17:55 -0700
Subject: Hot new programming languages - according to the TIOBE index
Message-ID: <1159543075.244454.186650@h48g2000cwc.googlegroups.com>


Interesting post by voidspace.

Ruby and Python are doing well, according to the latest TIOBE index.

Java, C and C++ and 1, 2 and 3 on the list

http://jugad.livejournal.com/2006/09/29/

Vasudev Ram
http://www.dancingbison.com

P.S. Dunno why "hot new" though - not too many of them are new. More
like "newly hot" ... :-)



From rdiaz02 at gmail.com  Thu Sep 28 16:50:13 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Thu, 28 Sep 2006 22:50:13 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <efgptl$fvg$1@sea.gmane.org>
References: <451b2c0b@news.bezeqint.net>
	<1159404316.140577.68700@b28g2000cwb.googlegroups.com>
	<efgld3$sc3$1@sea.gmane.org>
	<624934630609280823o322f0c17qc324c03ca089fbeb@mail.gmail.com>
	<efgptl$fvg$1@sea.gmane.org>
Message-ID: <624934630609281350k5c92c0dtc982fa112306b128@mail.gmail.com>

On 9/28/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Ramon Diaz-Uriarte wrote:
>
> > Going back to the original question, a related question: does anybody
> > know why there are so few books on data structures and algorithms that
> > use Python?
>
> Probably because Python has "better than textbook" implementations of
> core structures, and "better than textbook" implementations of many core
> algorithms, so lots of things can be done more efficiently by combining
> existing structures and algorithms than by using "textbook" algorithms.

OK, point taken. But having that shown explicitly in a (variety of)
traditional-looking DSA textbooks would be great. (And for some of us,
it might provide a conforting: "oh man, see how easy it is now with
Python").  After all, I think DSA classes are standard in CS
curricula. And what does the budding Python programmer answer to his
Pascal friend when he says "look, here is my linked list"?

Best,

R.

>
> </F>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From luismgz at gmail.com  Thu Sep  7 19:34:56 2006
From: luismgz at gmail.com (=?iso-8859-1?q?Luis_M._Gonz=E1lez?=)
Date: 7 Sep 2006 16:34:56 -0700
Subject: IronPython 1.0 released today!
In-Reply-To: <9FRLg.24762$rP1.15051@news-server.bigpond.net.au>
References: <mailman.38.1157488049.5279.python-list@python.org>
	<ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
	<4m835vF4narnU1@uni-berlin.de>
	<9FRLg.24762$rP1.15051@news-server.bigpond.net.au>
Message-ID: <1157672096.205892.257980@i3g2000cwc.googlegroups.com>


Chris wrote:
> Diez B. Roggisch wrote:
> > Chris wrote:
> >
> >> Jim Hugunin wrote:
> >>> I'm extremely happy to announce that we have released IronPython 1.0
> >>> today!
> >>>  http://www.codeplex.com/IronPython
> >> <snip>
> >>
> >> I'm no code guru but it sounds interesting. So can I import numpy,
> >> scipy, matplotlib, wxpython etc like I do now with CPython and expect,
> >> short of a few tweaks, that my code will work?
> <snip>
> > No, you can't. I'm not sure if there are any bridging attempts being made,
> > but in this respect IronPython is the same as Jython - a completely
> > different runtime which executes its own byte-code.
> >
> > Diez
> Disappointing because, apart from python itself, what I find amazing is
> the wealth of additional packages that, by association, come to be
> considered part of "python". Anyway thanks for saving me from some
> fruitless explorations.

People are already porting some of these libraries.
Those that are written in pure python don't need to be ported, but
those that rely on c extensions can be rewritten in c# or any other
.NET language.



From robert.kern at gmail.com  Sat Sep 23 22:10:42 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 21:10:42 -0500
Subject: Extended slices and indices
In-Reply-To: <1159062494.003884.75650@m7g2000cwm.googlegroups.com>
References: <1159058171.518504.180420@e3g2000cwe.googlegroups.com>	<mailman.513.1159060713.10491.python-list@python.org>
	<1159062494.003884.75650@m7g2000cwm.googlegroups.com>
Message-ID: <ef4pet$22t$1@sea.gmane.org>

GavinCrooks at gmail.com wrote:
> Robert Kern wrote:
>> I'd say bug in the .indices() method. The meaning of [4:-1:-1] is unavoidable
>> different than [::-1] since the index -1 points to the last element, not the
>> imaginary element before the first element. Unfortunately, there *is* no
>> concrete (start, stop, step) tuple that will emulate [::-1].
> 
> After some more experimenting, it seems that [L-1:-L-1:-1] will reverse
> a sequence of length L.

Ah, yes. Good point.

> But slice(L-1,-L-1,-1).indices(L) gives (L-1,
> -1,-1) which will not reverse the sequence. And range(L-1, -L-1, -1) is
> totally off, but range(L-1,-1,-1) is correct.
> 
> Seems like a bug (or an odd feature) of extended slicing of strings and
> other built in sequences.

It's not a bug with extended slicing. -1 has a very definite meaning when used 
as an index. The result of applying [4:-1:-1] is completely consistent with that 
meaning. The problem is with .indices() for giving you something that is 
inconsistent with that meaning. range() is neither here nor there; it's 
semantics are simply different.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From bignose+hates-spam at benfinney.id.au  Fri Sep 22 20:38:00 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Sat, 23 Sep 2006 10:38:00 +1000
Subject: Building things with setup.py
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<mailman.437.1158894908.10491.python-list@python.org>
	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>
	<mailman.438.1158898433.10491.python-list@python.org>
	<c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>
	<mailman.471.1158947946.10491.python-list@python.org>
	<VrXQg.3935$IA.1598@newssvr11.news.prodigy.com>
Message-ID: <87fyejxvrr.fsf@benfinney.id.au>

James Stroud <jstroud at mbi.ucla.edu> writes:

> <rant>I try things until a build works. I consider everything I do
> until acquiring a working build as necessary. Going back to see
> exactly what I did to make things work is not a viable option

Before trying such "I don't know what I need to do, but I'm going to
want to know after I do it" procedures, I usually start 'script' in
the shell session and then start all my experimenting. ('script' is a
tool from BSD available on most GNU/Linux distributions as well.)

That way, the entire session, fumbling dead-ends and all, is available
for later examination and trimming back to a "what I did to get it
working" document.

-- 
 \         "I have yet to see any problem, however complicated, which, |
  `\      when you looked at it in the right way, did not become still |
_o__)                             more complicated."  -- Paul Anderson |
Ben Finney



From http  Sun Sep  3 00:38:57 2006
From: http (Paul Rubin)
Date: 02 Sep 2006 21:38:57 -0700
Subject: Python style: to check or not to check args and data members
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
Message-ID: <7x4pvpk1i6.fsf@ruckus.brouhaha.com>

Bruno Desthuilliers <onurb at xiludom.gro> writes:
> I've rarely encoutered "silent" data corruption with Python - FWIW, I
> once had such a problem, but with a lower-level statically typed
> language (integer overflow), and I was a very newbie programmer by that
> time. Usually, one *very quickly* notices when something goes wrong.

The same thing can happen in Python, and the resulting bugs can be
pretty subtle.  I noticed the following example as the result of
another thread, which was about how to sort an 85 gigabyte file.
Try to put a slice interface on a file-based object and you can
hit strange integer-overflow bugs once the file gets larger than 2GB:

    Python 2.3.4 (#1, Feb  2 2005, 12:11:53) 
    [GCC 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> print slice(0, 3**33)
    slice(0, 5559060566555523L, None)         # OK ...

So we expect slicing with large args to work properly.  But then:

    >>> class A:
    ...   def __getitem__(self, s):
    ...     print s
    ... 
    >>> a = A()
    >>> a[0:3**33]
    slice(0, 2147483647, None)                # oops!!!!
    >>> 


From bearophileHUGS at lycos.com  Fri Sep  1 05:56:59 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 1 Sep 2006 02:56:59 -0700
Subject: python loops
In-Reply-To: <1157051784.609953.196100@h48g2000cwc.googlegroups.com>
References: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>
	<JcGJg.21533$ED.7604@read2.cgocable.net>
	<1157051115.635459.215920@p79g2000cwp.googlegroups.com>
	<1157051784.609953.196100@h48g2000cwc.googlegroups.com>
Message-ID: <1157104618.899811.216640@p79g2000cwp.googlegroups.com>

Kay Schluehr:
> I hate ii ;)

It's not nice looking, I agree. A more explicit name is often better.
But I think ii is better than i because you can find it in the code
 (with the Find command of the editor or grep) more easily than i.

Bye,
bearophile



From bearophileHUGS at lycos.com  Sun Sep  3 12:20:49 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 3 Sep 2006 09:20:49 -0700
Subject: str.isspace()
Message-ID: <1157300448.956962.24510@i42g2000cwa.googlegroups.com>

Are you using the str.isspace() method? I don't use it, so if most
people don't uses it, then it may be removed from Py 3.0.

I usually need to know if a string contains some non-spaces (not space
class chars). To do it I use something like:

if aline.strip(): ...

If you really need str.isspace() you may use (but so far I have never
had to do this):

if txt and not txt.strip(): ...

Bye,
bearophile



From tuomas.vesterinen at pp.inet.fi  Sat Sep 16 11:21:10 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Sat, 16 Sep 2006 15:21:10 GMT
Subject: Catching toplevel move and resize
In-Reply-To: <pan.2006.09.16.14.42.26.888806@users.sf.net>
References: <W9SOg.169$gh6.143@read3.inet.fi>
	<pan.2006.09.16.14.42.26.888806@users.sf.net>
Message-ID: <GDUOg.223$gh6.173@read3.inet.fi>

Pontus Ekberg wrote:
> You are probably looking for "configure_event".

That's it! Works fine, thanks.

Tuomas


From gnemesis2001 at gmail.com  Fri Sep 15 05:03:24 2006
From: gnemesis2001 at gmail.com (Nemesis)
Date: 15 Sep 2006 02:03:24 -0700
Subject: XPN 0.6.5 released
In-Reply-To: <pan.2006.09.15.06.39.49.446013@gmx.net>
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<pan.2006.09.15.06.39.49.446013@gmx.net>
Message-ID: <1158311004.809035.77180@e3g2000cwe.googlegroups.com>

Marc 'BlackJack' Rintsch wrote:
> > XPN is monothreaded, so when it is downloading the headers (it is a
> > monolotic job) the progress bar can't be updated.
> Why?  I guess there's a loop involved.  Can't you update the GUI after
> each message?

If you use the "Donwload New Headers" function XPN will download the
header for the subscribed groups, for each group it has to send the
NNTP command XOVER to retrieve the new headers. For each group I update
the interface when the XOVER command ends, so the interface gets
updated betweenfor every group but if there are a lot of new headers
the XOVER command can take a lot of time ... and during this time I
can't update the interface.
This is the pseudo-code

for group in subscribed:
    nntplib.xover(group)
    statusbar.push("Downloaded ...")
    gtk.update_interface()



From jan.dries at dcube-resource.be  Mon Sep 25 15:42:37 2006
From: jan.dries at dcube-resource.be (Jan Dries)
Date: Mon, 25 Sep 2006 21:42:37 +0200
Subject: SSL meta data
In-Reply-To: <7xk63r21t2.fsf@ruckus.brouhaha.com>
References: <ef99ht$ih2$1@svr7.m-online.net>
	<7xk63r21t2.fsf@ruckus.brouhaha.com>
Message-ID: <4518312D.2080701@dcube-resource.be>

Paul Rubin wrote:
> "BerndWill" <bernd at ewill.de> writes:
>> I would love to read programmatically some information out of the 
>> certificates itself (who signed it and what is the validation period, i.e. 
>> meta data).
>>
>>  Can someone please help me out here !?
> 
> This is very cheesy but I sometimes I've just run the openssl command
> line utility with popen and read the output:
> 
>   openssl x509 -text -noout -in certfile
> 
> will dump out the cert contents and you can parse it with regexps.
> 
> The right way to do it is to make the appropriate m2crypto (or
> whatever) calls that parse the cert directly.

I'm not sure this is what the OP is looking for. Your method assumes the 
certificate is on the local file system, while it seems to me he wants 
to do an HTTPS request to one of their servers and obtain information 
from the certificate installed there.

For doing that, cURL might be a good choice (either the command line 
version (http://curl.haxx.se) or the python extension module PycURL 
http://pycurl.sourceforge.net/)).

For instance:

C:\> curl -v https://www.paypal.com

* About to connect() to www.paypal.com port 443
*   Trying 216.113.188.65... * connected
* Connected to www.paypal.com (216.113.188.65) port 443
* successfully set certificate verify locations:
*   CAfile: C:\home\personal\development\bin\curl-ca-bundle.crt
   CApath: none
* SSL connection using DHE-RSA-AES256-SHA
* Server certificate:
*        subject: /C=US/ST=California/L=Mountain View/O=Paypal 
Inc./OU=Information Systems/OU=Terms of use at
www.verisign.com/rpa (c)00/CN=www.paypal.com
*        start date: 2006-02-09 00:00:00 GMT
*        expire date: 2008-02-09 23:59:59 GMT
*        common name: www.paypal.com (matched)
*        issuer: /O=VeriSign Trust Network/OU=VeriSign, Inc./OU=VeriSign 
International Server CA - Class 3/OU=
www.verisign.com/CPS Incorp.by Ref. LIABILITY LTD.(c)97 VeriSign
* SSL certificate verify ok.

[more output deleted]

I'm sure that by using the cURL API directly, you can obtain the 
certificate information in a more direct way without having to rely on 
parsing the above output with regexps. Doing so might also be more 
complex though :-)

Regards,
Jan



From martin at v.loewis.de  Thu Sep 21 14:37:08 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 21 Sep 2006 20:37:08 +0200
Subject: Python 2.5 WinXP AMD64
In-Reply-To: <4nfrhbFa4kbiU1@individual.net>
References: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>
	<45129e77$0$23923$626a54ce@news.free.fr>
	<4nfrhbFa4kbiU1@individual.net>
Message-ID: <4512DBD4.8020604@v.loewis.de>

Bjoern Schliessmann schrieb:
>> To be exact, you need a 64bit Windows OS on a 64bit cpu.
> 
> Is there a reason that can be explained in a less-than-2-KB
> posting? :) I mean why Python depends on the processor type that
> much.

In the AMD-64 package, python.exe, python25.dll etc are declared
(by the linker) as binaries for the AMD64 architecture. If
you try to run such a binary on a 32-bit system, the operating
system will complain that it can't recognize the file type
(or that the architecture is wrong). Likewise for Itanium.

OTOH, Microsoft implemented an emulation mode for 32-bit
binaries on AMD64 and Itanium, so you can run the 32-bit
Python on Win64. On Itanium, this emulation has a significant
performance loss; on AMD64, the emulation is quite efficient
since the processor directly supports the emulation mode
(and better so than Itanium 1/2 did).

Regards,
Martin


From bearophileHUGS at lycos.com  Thu Sep  7 15:24:04 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 7 Sep 2006 12:24:04 -0700
Subject: Extracting text from a string + note
In-Reply-To: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
Message-ID: <1157657044.162922.80290@i3g2000cwc.googlegroups.com>

Tempo:
> I am having a little trouble extracting text from a string. The
> string that I am dealing with is pasted below, and I want to
> extract the prices that are contained in the string below.

This may help:

>>> import re
>>> reg = r"(?<=  \$  )  (?:  \d* \.? \d*  )"
>>> prices = re.compile(reg, flags=re.VERBOSE)
>>> prices.findall('</span>, $66.99 <span class="sale"> $.99')
['66.99', '.99']

You can read about Python regular expressions:
http://www.amk.ca/python/howto/regex/
http://docs.python.org/lib/module-re.html

------------------------

Perl 6 regular expressions are verbose by default, future Python may do
the same.

>From Apocalypse 5, by Larry Wall:
http://dev.perl.org/perl6/doc/design/apo/A05.html

>In real life, tokens are more recognizable if they are separated by whitespace.<

>Now, you may rightly point out that + is something we already have, and we already introduced /x to allow whitespace, so why is this bullet point here? Well, there's a lot of inertia in culture, and the problem with /x is that it's not the default, so people don't think to turn it on when it would probably do a lot of good. The culture is biased in the wrong direction. Whitespace around tokens should be the norm, not the exception. It should be acceptable to use whitespace to separate tokens that could be confused.<

Bye,
bearophile



From paul at boddie.org.uk  Fri Sep 22 11:51:57 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 22 Sep 2006 08:51:57 -0700
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>
	<mailman.451.1158926238.10491.python-list@python.org>
	<ef0uur$aa1$1@mouse.otenet.gr>
Message-ID: <1158940317.354847.323490@h48g2000cwc.googlegroups.com>

Ilias Lazaridis wrote:
> Fredrik Lundh wrote:
> > Ilias Lazaridis wrote:
> >
> >> note: I am aware about search engines.
> >
> > but you're incapable of using them, or ?

Well, "Python new-style old-style classes" in Google gives a range of
discussions, but an old version of the definitive guide [1] is found
via one of the later results on the first page (which is some section
of the reference manual). According to that and the newer guide [2],
the official documentation still isn't updated, despite it having been
a good three years since new-style classes first arrived in a real
Python release.

Of course, the lengthening paper trail shouldn't be a surprise to you
or I, but with more "exciting" additions to the language in 2.5, it is
somewhat unnerving that the last major changes still sit partially
documented in "additional documentation" that a beginner wouldn't be
inclined to read through.

> >> I ask for documentation which other developers have found useful
> >
> > most recent Python books contains good discussions of the things you're
> > asking for.  maybe you should buy a book ?
>
> I'm interested in online resources, experiences etc..

And I don't see what's wrong with that.

> Maybe you can clarify some things (for me and for readers):
>
> Do I need old style classes?

No, but you can still use them. I use them a lot.

> Does the python standard library use old style classes?

Yes, I'd imagine, since it would otherwise have needed someone to go
through the library and change everything, and I doubt that anyone is
that interested to do so.

> Have those old style classes any benefits?

That you don't have to write the bizarre conceptual accident that is
"(object)" when declaring a "top-level" class?

Paul

[1] http://www.python.org/doc/newstyle.html
[2] http://www.python.org/doc/newstyle/



From steve at holdenweb.com  Tue Sep  5 09:42:35 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 14:42:35 +0100
Subject: HTTP Server Root Folder
In-Reply-To: <1157459776.181654.63480@b28g2000cwb.googlegroups.com>
References: <1157459776.181654.63480@b28g2000cwb.googlegroups.com>
Message-ID: <edjur6$oph$1@sea.gmane.org>

placid wrote:
> Hi All,
> 
> I have this BaseHTTPServer.HTTPServer that is located at C:\ (im on
> Windows XP), when i run the program (httpserver.pyw) from the Run
> Dialog as "C:\httpserver.pyw" the root folder ("\") for http server is
> C:\, but when i add an entry to Registry Run so that it runs at boot
> time, the root folder becomes "C:\Documents and Settings\<username>" ?
> 
> Does anyone know what the problem is?
> 
Yes. Rather obviously, these two different ways of running programs 
assert different working directories for the program.

A simple way around this would be to have your program make an 
os.chdir() call to ensure the correct working directory before it starts 
the server.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fuzzyman at gmail.com  Sun Sep 17 15:44:52 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 17 Sep 2006 12:44:52 -0700
Subject: [ANN] Movable Python Mega-Pack and MovablePython.NET
Message-ID: <1158522292.262444.120760@e3g2000cwe.googlegroups.com>

One of the most important new features of `Movable Python
<http://www.voidspace.org.uk/python/movpy/>`_ is that it can work with
multiple interpreters. That can be other distributions of **Movable
Python**, an installed version of Python, IronPython, or in fact any
executable (or batch file or a Python script) [#]_.

If you have multiple **Movable Python** distributions, you can test
programs with any version of Python from a single interface. You can
also use the same interface to launch interactive interpreter sessions
for any of the interpreters.

The **Movable Python Mega-Pack** comes with all four distributions of
Movable Python (Python 2.2, 2.3, 2.4 and 2.5). It also comes with
`IronPython 1.0 Final <http://www.codeplex.com/IronPython>`_. It is
pre-configured with these interpreters (the default is Python 2.4).

For a screenshot of the mega-pack and MovablePython.NET, see :


http://www.voidspace.org.uk/python/weblog/arch_d7_2006_09_16.shtml#e464

The **Movable Python Mega-Pack** costs ?11.99 [#]_, around the cost of
two and a half distributions. You also get a couple of freebies. You
can obtain the Movable Python Mega-Pack from :

    `The Movable Python Groups Page
<http://voidspace.tradebit.com/groups.php>`_

`Nanagram <http://www.voidspace.org.uk/python/nanagram.html>`_ the
anagram maker is a fun program for making anagrams. It's especially fun
to make anagrams of your friends names.

This normally costs ?5 for the full version.

The other freebie is **MovablePython.NET**. This is an experimental
build of Movable Python, written in C#. It isn't a stand-alone
interpreter, but a GUI launcher.

It lacks many of the features of the 'standard' Movable Python, but has
a nicer GUI and a few extra features.

These include :

* Auto detecting any installed Python
* Assigning system wide hot keys to scripts
* Drag and drop

This version will probably provide the basis of a GUI update for the
next version of Movable Python. If you purchase the Mega-Pack, you have
full access to all the individual distributions (including free updates
for a year), **Nanagram** and **MovablePython.NET** and a single
package containing all the distributions. This is pre-configured, and
weighs in at 80mb.

.. [#] So Movable Python can act as a GUI for any program, including
passing command line arguments. You may
       never need to use the command line again.
.. [#] Once Python 2.5 final is released, this will also be raised: so
be quick.



From promo at simplyspeaking.com  Mon Sep 25 10:28:00 2006
From: promo at simplyspeaking.com (SimplySpeaking's items)
Date: 25 Sep 2006 07:28:00 -0700
Subject: http://www.simplyspeaking.com/
Message-ID: <1159194480.820697.287530@m73g2000cwd.googlegroups.com>

Simply Speaking is a high tech Voice recognition and Text to speech
software program that allows you to dictate into any Windows program.
You speak and Simply Speaking will convert your voice into typewritten
text. Simply Speaking can also read back to you any highlighted text
from any Windows application.

 Simply Speaking was originally developed by LDHC (Learning Differences
Help Center) for use by dyslexics. In order to allow all dyslexics to
take advantage of this great technology, LDHC developed a User
interface that is unique in its simplicity and ease of use.

 After introducing the product, LDHC found that many people who were
not dyslexics were highly impressed by its amazing accuracy and user
friendly features, and they decided to market it to the greater public.
With a 98% (or higher, with proper training) accuracy level, we are
sure that you will be amazed at the increased productivity Simply
Speaking will bring.



From ilias at lazaridis.com  Wed Sep 20 11:06:45 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Wed, 20 Sep 2006 18:06:45 +0300
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158755945.357922.34100@i42g2000cwa.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<1158679802.962227.15200@b28g2000cwb.googlegroups.com>
	<1158683411.737232.42380@b28g2000cwb.googlegroups.com>
	<1158686571.184132.273190@h48g2000cwc.googlegroups.com>
	<1158753258.429101.298260@h48g2000cwc.googlegroups.com>
	<1158755945.357922.34100@i42g2000cwa.googlegroups.com>
Message-ID: <eerldr$84d$1@mouse.otenet.gr>

MonkeeSage wrote:
> Ilias Lazaridis wrote:
>> no, I don't know it.
> 
> OK...so how do you evaluate a language when you don't know its basic
> operations? Hmmm, sounds fishy.

The learning-process is an important part of the evaluation.

>> how do I define something into the top-level namespace? I assume I
>> could place it into the root-package of my project, into the __init__
>> function.
>>
>> But how do I place it within my computers python installation (the big
>> init)?
> 
> When you just say:
> 
> def blah(): pass
> 
> Now 'blah' function is in the top-level namespace, just like global
> variables. Or if it's in a different file, you'd say 'from blah import
> *'. You honestly don't know this?!??

I know how to define it:

--- myBlahWithImport.py ---
from mylib import blah

if (__name__ == '__main__'):
     blah()
--- end file ---

what I dont know is, how to negate the need of the import statement.

--- myBlah.py ---
if (__name__ == '__main__'):
     blah()
--- end file ---

>> I am aware of this technique.
>>
>> But I want to modify existent classes, without touching their code.
> 
> The only way to do this is to explicitly subclass the existent classes
> with your own class and modify what you want there in your subclass
> (see below), or use multiple inheritence as I suggested previously.
> 
>> I've noticed some interesting code on you website:
>>
>> "
>> class file(file):
>>   def reopen(self, name=None, mode='w', bufsize=None):
>> ...
>>
>> fh = file('test.txt', 'rb')
>> print fh # <open file 'test.txt', mode 'rb' at 0xb7c92814>
>> fh.reopen(mode='wb')
>> "
>> http://rightfootin.blogspot.com/2006/09/ruby-reopen.html
>>
>> does this mean that I can add a method to a class in a similar way with
>> ruby? (by using class class-name(class-name): )
> 
> Basically, yes. In ruby you can reopen base classes; in python you can
> get the same effect by subclassing the base classes with the same name
> as the base class, then instantiating all your objects as that class.
> This is the exact same idea as a "super-duper super class" as I
> mentioned above.

That's a part of the construct I was looking for.

>> but the limitation is that I cannot do this with the python build-in
>> types?:
>>
>> http://rightfootin.blogspot.com/2006/08/of-rocks-and-reptiles.html
> 
> You can subclass buit-in types using the same name as the parent class.

So, that's a 2nd part of the constrcut I was looking for.

btw: from which class does "int" inherit?

> In fact here is what I use:
> 
> ## my little library to make python more OO
> ## i.e., to get rid of the top-level junk...
> ## or at least to hide it behind some pretty
> ## object attributes :)
> ##
> ## YMMV - and don't complain if you don't
> ## like it; I wrote it for ME, not you
> ##
> ## Jordan Callicoat < MonkeeSage at gmail.com >
> 
> ## some global methods so we can use them
> ## to set up the class methods
... (many code I'll review at a later point)

> It's not the most "pythojnic" way to do things, but it works for me.
> 
> Ps. I still have a hard time belieiving that after all the time you've
> spent on comp.lang.lisp, comp.lang.ruby and comp.lang.python you still
> don't understand these basic concepts...if that's really true, I would
> never use your consulting service!


"CONSTRUCT - Adding Functionality to the Overall System"

This is not a basic concept.

Although in smaltalk and ruby is very simple.

But I've selected to use Python.

.

-- 
http://lazaridis.com


From apardon at forel.vub.ac.be  Thu Sep 28 05:45:44 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 09:45:44 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<1159370280.794129.104190@i3g2000cwc.googlegroups.com>
	<slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>
	<efg109$4vr$1@news.albasani.net>
Message-ID: <slrnehn6e8.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-28, Georg Brandl <g.brandl-nospam at gmx.net> wrote:
> Antoon Pardon wrote:
>> On 2006-09-27, George Sakkis <george.sakkis at gmail.com> wrote:
>>> Antoon Pardon wrote:
>>>
>>>> What bothers me a bit about the rejection of PEP 326 is that one of the
>>>> reasons stated is:
>>>>
>>>>   http://mail.python.org/pipermail/python-dev/2004-January/042306.html
>>>>
>>>>   - it is easily implemented when you really need it
>>>>
>>>> Well I thought it would simplify some things for me, so I tried an
>>>> implementation and then found that some of the things that I would
>>>> want to do with it wont work. So the "is easily implemented" bit
>>>> seems not to be correct.
>>>
>>> IIRC, the PEP proposed the Smallest and Largest singletons with the
>>> sole purpose of being used in comparisons. No numeric behavior was
>>> implied, i.e. Smallest and Largest are not negative and positive
>>> infinity in the math sense of the word.
>> 
>> That is true.
>> 
>>> So I guess the "easily implemented" refers to this case alone.
>> 
>> This doesn't follow. Take the example were I got stuck.
>> 
>>>>> lst = range(10)
>>>>> lst[:Top]
>
> FWIW, this works with 2.5 and the __index__ slot:
>
> >>> class Top(object):
> ...  def __index__(self):
> ...   return sys.maxint
> ...
> >>> a=range(5)
> >>> a[:Top()]
> [0, 1, 2, 3, 4]
> >>>

It is something worth investigating, but I'm not sure it
will suite my purpose. You see I have a table module,
a table is like a list except the base index doesn't need
to be 0. So I could have a table that is indexable from
sys.maxint - 3 to sys.maxint + 7. I'm not sure tbl[:Top]
would do what it is supposed to do in those circumstances.

-- 
Antoon Pardon


From ncoghlan at gmail.com  Fri Sep 15 10:02:21 2006
From: ncoghlan at gmail.com (NickC)
Date: 15 Sep 2006 07:02:21 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>
	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>
	<7x4pvckyyu.fsf@ruckus.brouhaha.com>
	<slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>
	<mailman.10.1158136241.10491.python-list@python.org>
Message-ID: <1158328941.588687.302950@p79g2000cwp.googlegroups.com>

Fredrik Lundh wrote:
> Antoon Pardon wrote:
>
> > One place where I would use such a feature is in a unittest
> > package.  I think being able to write self.assert or self.raise
> > looks better than having to append an underscore.
>
> patch here:
>
> http://mail.python.org/pipermail/python-list/2001-June/047996.html
>
> </F>

Heh. Imagine how much more fun the introduction of conditional
expressions and the yield statement -> yield expression transition in
Python 2.5 would have been if Python 2.4 had used this behaviour :)

Cheers,
Nick.



From luuk at invalid.lan  Mon Sep 11 11:10:39 2006
From: luuk at invalid.lan (Luuk)
Date: Mon, 11 Sep 2006 17:10:39 +0200
Subject: efficient text file search.
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
	<45054921$0$4526$e4fe514c@news.xs4all.nl>
	<1157974937.286653.5500@h48g2000cwc.googlegroups.com>
	<45054e6a$0$4512$e4fe514c@news.xs4all.nl>
	<1157983701.863356.259790@d34g2000cwd.googlegroups.com>
Message-ID: <45057c6f$0$4514$e4fe514c@news.xs4all.nl>


"John Machin" <sjmachin at lexicon.net> schreef in bericht 
news:1157983701.863356.259790 at d34g2000cwd.googlegroups.com...
>
> Luuk wrote:
> [snip]
>> some googling turned op the following.
>> Second paragraph of chapter 14 of http://www.amk.ca/python/2.1/
> [snip]
>> For a fuller discussion of the line I/O changes, see the python-dev 
>> summary
>> for January 1-15, 2001 at http://www.amk.ca/python/dev/2001-01-1.html.
>
> That is *HISTORY*. That is Python 2.1. That is the year 2001.
> xreadlines is as dead as a dodo.
>

Thats's why i started my reply with:
"some googling turned op the following."
i did not state that further googling was unneeded ;-)




From daniel.dittmar at sap.com  Tue Sep 19 09:07:23 2006
From: daniel.dittmar at sap.com (Daniel Dittmar)
Date: Tue, 19 Sep 2006 15:07:23 +0200
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <mailman.266.1158668255.10491.python-list@python.org>
References: <mailman.266.1158668255.10491.python-list@python.org>
Message-ID: <eeoq2b$ii0$1@news.sap-ag.de>

Nico Grubert wrote:
> I'd like to install Python 2.3.5. on a 64-Bit OS (Suse Linux Enterprise 
> Server 10) on an AMD Opteron 64-Bit machine.
> I have to use Python 2.3.5.
> 
> Do I need a special source archive or can I use "Python-2.3.5.tgz" from 
> http://www.python.org/ftp/python/2.3.5/Python-2.3.5.tgz ?
> 
> Is there anything special I have to care about or is installing Python 
> on a 64 Bit OS just as easy as installing it on a 32-Bit OS?

On this platform, it should be easy to build from the sources as gcc 
builds 64 bit programs by default.

On some platforms (Solaris/Sparc, AIX, HP-UX/PA-RISC), the compiler 
defaults to 32bit programs. You then have to convince configure to use 
the right CFLAGS. The exact technique might differ from configure to 
configure: some require an option, some require an environment variable. 
Tip: create wrapper scripts for the compiler (and possibly ld and ar), 
which uses the proper options. Add the location of these scripts at the 
start of PATH, thus overiding the compiler. Now all configures will 
default to 64 bit.

Daniel



From stan1948 at bigpond.net.au  Wed Sep  6 23:42:47 2006
From: stan1948 at bigpond.net.au (stan)
Date: Thu, 07 Sep 2006 03:42:47 GMT
Subject: newbe who is also senior having a senior moment
Message-ID: <XyMLg.24585$rP1.20025@news-server.bigpond.net.au>

I am a complete newbe to python and only got here because I am trying to set 
up iTunes in game Second Life.  Have followed all instructions but keep 
getting an error reading from my XP Pro OS as follows

File "C:\Python24\2L file for iTunes", line 4, in -toplevel-
    import win32com.client
ImportError: No module named win32com.client

can someone pls point me in the right direction here as I am trying to 
urgently fix the file for someones birthday in game (I know pathetic)

thanks
Stan 




From steve at holdenweb.com  Fri Sep 22 08:26:47 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 08:26:47 -0400
Subject: Don't use regular expressions to "validate" email addresses
In-Reply-To: <874pv0z0cp.fsf@benfinney.id.au>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>	<87lkoczp48.fsf_-_@benfinney.id.au>
	<eevo5f$abu$1@sea.gmane.org>	<mailman.442.1158902652.10491.python-list@python.org>	<1158916433.621758.21640@m73g2000cwd.googlegroups.com>
	<874pv0z0cp.fsf@benfinney.id.au>
Message-ID: <ef0kom$upr$1@sea.gmane.org>

Ben Finney wrote:
> "John Machin" <sjmachin at lexicon.net> writes:
> 
> 
>>What proportion of deliverable e-mail addresses have more than one @
>>in them?
> 
> 
> I don't know. Fortunately, I don't need to; I don't "validate" email
> addresses by regular expression.
> 
> What proportion of deliverable email addresses do you want to discard
> as "not valid"?
> 
Just as a matter of interest, are you expecting that you'll find out 
about the undeliverable ones? Because in many cases nowadays you wont, 
since so many domains are filtering out "undeliverable mail" messages as 
an anti-spam defence.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From fredrik at pythonware.com  Sun Sep 24 05:26:04 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 11:26:04 +0200
Subject: Timeline for Python?
In-Reply-To: <ef5gbt$721$3@lust.ihug.co.nz>
References: <mailman.497.1159035007.10491.python-list@python.org>	<1159060365.363391.238090@d34g2000cwd.googlegroups.com>
	<ef5gbt$721$3@lust.ihug.co.nz>
Message-ID: <ef5ivb$hb8$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:

>> I believe there is some market for documentation of older
>> versions of software.  Many installations are constrained
>> by the cost of upgrading and can not migrate to a newer
>> version.
> 
> And they can afford to buy books??
> 
> If they're that strapped for cash, it's cheaper to access documentation on
> the Web.

you are joking, right?

</F>



From jjl at pobox.com  Sat Sep 16 20:36:34 2006
From: jjl at pobox.com (John J. Lee)
Date: Sun, 17 Sep 2006 00:36:34 GMT
Subject: high level, fast XML package for Python?
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<4mvnqmF7r4a3U1@uni-berlin.de>
	<OIWdnc8WMLf2KpfYnZ2dnUVZ_omdnZ2d@comcast.com>
Message-ID: <874pv7xrak.fsf@pobox.com>

Steven Bethard <steven.bethard at gmail.com> writes:
[...]
> In Python 2.5, cElementTree and ElementTree will be available in the
> standard library as xml.etree.cElementTree and
> xml.etree.ElementTree. So learning them now is a great idea.

Only some of the original ElementTree software is going into 2.5,
apparently.  So you can get more on the effbot.org site than you get
from just downloading Python 2.5.  Probably future Python releases
will add more of Fredrik's XML code.


John


From deets at nospam.web.de  Sat Sep 30 12:11:03 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 30 Sep 2006 18:11:03 +0200
Subject: _gtk
In-Reply-To: <1159632272.796759.109940@e3g2000cwe.googlegroups.com>
References: <1159632272.796759.109940@e3g2000cwe.googlegroups.com>
Message-ID: <4o7j8nFd98fcU1@uni-berlin.de>

vedran_dekovic at yahoo.com schrieb:
> Hello,
> Where to I download module:  _gtk

is google dead today?

google: python module gtk download windows

something like the fifth link.

Diez


From mahs at telcopartners.com  Wed Sep  6 13:51:04 2006
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 06 Sep 2006 10:51:04 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
Message-ID: <edn1tg$guc$1@sea.gmane.org>

lh84777 at yahoo.fr wrote:
> Hello,
> 
> i'm looking for this behaviour and i write a piece of code which works,
> but it looks odd to me. can someone help me to refactor it ?
> 
> i would like to walk across a list of items by series of N (N=3 below)
> of these. i had explicit mark of end of a sequence (here it is '.')
> which may be any length and is composed of words.
> 
> for: s = "this . is a . test to . check if it . works . well . it looks
> . like ."
> the output should be (if grouping by 3) like:
> 
> => this .
> => this . is a .
> => this . is a . test to .
> => is a . test to . check if it .
> => test to . check if it . works .
> => check if it . works . well .
> => works . well . it looks .
> => well . it looks . like .
> 
> my piece of code :
> 
> import sys
> 
> class MyBuffer:
>     def __init__(self):
>         self.acc = []
>         self.sentries = [0, ]
>     def append(self, item):
>         self.acc.append(item)
>     def addSentry(self):
>         self.sentries.append(len(self.acc))
>         print >> sys.stderr, "\t", self.sentries
>     def checkSentry(self, size, keepFirst):
>         n = len(self.sentries) - 1
>         if keepFirst and n < size:
>             return self.acc
>         if n % size == 0:
>             result = self.acc
>             first = self.sentries[1]
>             self.acc = self.acc[first:]
>             self.sentries = [x - first for x in self.sentries]
>             self.sentries.pop(0)
>             return result
> 
> s = "this . is a . test to . check if it . works . well . it looks .
> like ."
> l = s.split()
> print l
> 
> mb = MyBuffer()
> n = 0
> for x in l:
>     mb.append(x)
>     if x == '.':
>         # end of something
>         print "+", n
>         n += 1
>         mb.addSentry()
>         current = mb.checkSentry(3, True) # GROUPING BY 3
>         if current:
>             print "=>", current
> 
If you just need to 'walk across a list of items', then your buffer class and 
helper function seem unnecessary complex.  A generator would do the trick, 
something like:

 >>> def chunker(s, chunk_size=3, sentry="."):
...     buffer=[]
...     sentry_count = 0
...     for item in s:
...         buffer.append(item)
...         if item == sentry:
...             sentry_count += 1
...             if sentry_count > chunk_size:
...                 del buffer[:buffer.index(sentry)+1]
...             yield buffer
...


 >>> s = "this . is a . test to . check if it . works . well . it looks. like ."
 >>> for p in chunker(s.split()): print " ".join(p)
...
this .
this . is a .
this . is a . test to .
is a . test to . check if it .
test to . check if it . works .
check if it . works . well .
works . well . it looks. like .
 >>>

HTH
Michael





From sjmachin at lexicon.net  Wed Sep 13 19:28:10 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 16:28:10 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <mailman.42.1158165024.10491.python-list@python.org>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
	<ee98cn$qhp$1@foggy.unx.sas.com>
	<mailman.40.1158163197.10491.python-list@python.org>
	<1158164270.297334.209790@d34g2000cwd.googlegroups.com>
	<mailman.42.1158165024.10491.python-list@python.org>
Message-ID: <1158190090.167252.318890@m73g2000cwd.googlegroups.com>


Fredrik Lundh wrote:
> John Machin wrote:
>
> > Any support for the radical notion of the error message giving the full
> > path of the file that it's complaining about? If so, I'll lob in an
> > enhancement request in the morning ...
>
> there's always "python -vv", of course.

Thank you; I wasn't aware of that. Given that (as at 2.4.3) searching
the .chm docs for "interpreter", "command", and "option" don't yield
any pointers to the interpreter command line options, and given that
python -h gives no clue:
"""
-u     : unbuffered binary stdout and stderr (also PYTHONUNBUFFERED=x)
         see man page for details on internal buffering relating to
'-u'
-v     : verbose (trace import statements) (also PYTHONVERBOSE=x)
-V     : print the Python version number and exit
-W arg : warning control (arg is action:message:category:module:lineno)
"""

could you please explain "of course"? I'm not sure how the general
populace could have known, apart from vague recollections of some Unix
utilities using a -v, -vv, -vvv etc convention.

TIA,
John



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sun Sep 24 06:01:50 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 24 Sep 2006 12:01:50 +0200
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de>
Message-ID: <4nn3ceFb3d5fU1@individual.net>

Ingo Linkweiler wrote:

> b) verify an existing mailserver or DNS/MX records

"Or"? That's two different things.

If you don't know already: Even if you test all this, it is still
possible that

- the target mail account doesn't exist
- the sender's IP is filtered by the server so he'll reject
- the localpart has syntax errors (allowed chars in the localpart
are up to the server)

Regards,


Bj?rn

-- 
BOFH excuse #280:

Traceroute says that there is a routing problem in the backbone. 
It's not our problem.



From g.brandl-nospam at gmx.net  Fri Sep 15 01:02:28 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Fri, 15 Sep 2006 07:02:28 +0200
Subject: Converting a varargs tuple to a list - a definite pitfall for
	new comers to Python
In-Reply-To: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
References: <1158292738.767791.150200@b28g2000cwb.googlegroups.com>
Message-ID: <eedc54$srs$1@news.albasani.net>

metaperl.etc at gmail.com wrote:
> The following program does not work if you uncomment     #lis =
> ["xmms2"] + list(args)
> 
> Evidently Python is opting for the nullary constructor list() as
> opposed to the other one which takes a sequence. But no newcomer would
> know this. And the Python docs dont give a good example of dealing with
> taking a sequence of args and converting it to a list.

Evidently you overlooked having defined a list() in global scope
yourself which takes no arguments.

> I must've spent 40 minutes looking through my ora books, googling and
> irc'ing in vane on this.
> 
> import subprocess
> 
> def xmms2(*args):
>     #lis = ["xmms2"] + list(args)
>     lis = ["xmms2"] + [a for a in args]
>     output = subprocess.Popen(lis,
> stdout=subprocess.PIPE).communicate()[0]
>     return output.splitlines()
> 
> def list():
  ^^^^^^^^^^^

This is called by list(args) above, and the call fails.
If you want to avoid such clashes, don't name your functions list,
dict, int, str etc.

Georg


From sjmachin at lexicon.net  Thu Sep  7 13:53:06 2006
From: sjmachin at lexicon.net (John Machin)
Date: 7 Sep 2006 10:53:06 -0700
Subject: the same strings, different utf-8 repr values?
In-Reply-To: <1157642083.249352.159080@m73g2000cwd.googlegroups.com>
References: <1157642083.249352.159080@m73g2000cwd.googlegroups.com>
Message-ID: <1157651586.268521.130450@i3g2000cwc.googlegroups.com>


slowness.chen at gmail.com wrote:
> I have two files:
>
> test.py:
> --------------------------------------------------
> # -*- encoding : utf8 -*-
> print 'in this file', repr('??')
>
> # tt.txt is saved as utf8 encoding
> f = file('tt.txt')
> line1 = f.readline().strip()
> print 'another file', repr(line1)
> -------------------------------------------------------
>
> tt.txt:
> ----------------------------------------------------
> ??
> test
> -------------------------------------------------------
> run test.py and I get the following output:
> in this file '\xe4\xb8\xad\xe6\x96\x87'
> another file '\xef\xbb\xbf\xe4\xb8\xad\xe6\x96\x87'
>
> and I cann't encode line1 like:
>        line1.decode('utf8').encode('gbk')
> get this error:
> UnicodeEncodeError: 'gbk' codec can't encode character u'\ufeff' in
> position 0:
> illegal multibyte sequence
>
> why did I get the different repr values?

Because whatever you used to "save as" that file has retained or
inserted a BOM (byte order mark, U+FEFF) at the start of the file
before encoding as UTF-8. It's the '\xef\xbb\xbf' at the start of the
file, and also the u'\ufeff' that is giving the gbk codec indigestion.
You can remove it in your script.

HTH
John



From jstroud at mbi.ucla.edu  Sat Sep 23 05:50:22 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 23 Sep 2006 09:50:22 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.482.1158961642.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>	<mailman.438.1158898433.10491.python-list@python.org>	<c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>	<mailman.471.1158947946.10491.python-list@python.org>	<VrXQg.3935$IA.1598@newssvr11.news.prodigy.com>
	<mailman.482.1158961642.10491.python-list@python.org>
Message-ID: <yr7Rg.4475$6S3.1324@newssvr25.news.prodigy.net>

Robert Kern wrote:
> Okay, this is possibly part of the problem. numpy.distutils handles 
> FORTRAN code differently than other extension modules; this is why pure 
> C extension modules both inside numpy and elsewehere were linking fine. 
> Try unsetenving $CPPFLAGS and $LDFLAGS and adding those arguments to 
> build_ext, if necessary.
> 
> Looking on line 516 of numpy/fcompiler/__init__.py (why there's a class 
> definition in __init__.py, I'll never know), it does look like the 
> linker flags which are carefully constructed by numpy.distutils are 
> indeed overridden by the user's setting of $LDFLAGS.

I unset $LDFLAGS and $CPPFLAGS (not trying one at a time), and this did 
the trick. Everything built without a hitch.


James


From fuzzyman at gmail.com  Wed Sep 13 11:22:41 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 13 Sep 2006 08:22:41 -0700
Subject: Python blogging software
In-Reply-To: <mailman.7.1158132885.10491.python-list@python.org>
References: <1158132558.3622.29.camel@devilbox>
	<mailman.7.1158132885.10491.python-list@python.org>
Message-ID: <1158160960.920246.107630@b28g2000cwb.googlegroups.com>


Cliff Wells wrote:
> On Wed, 2006-09-13 at 00:29 -0700, Cliff Wells wrote:
>
> > Anyone aware of any functional (doesn't need to be complete, beta is
> > fine) blog software written in Python?
>
> Hmph.  And as soon as I hit send I find
>
>  http://wiki.python.org/moin/PythonBlogSoftware
>
> Okay, so is there any *not* on that list that should be considered (and
> perhaps added to the list)?

Firedrop2 is a client-side blog program (generates static HTML to be
uploaded to your webserver).

The link on that page is out of date. It is now :

    http://www.voidspace.org.uk/python/firedrop2/

You can see a feed of some blogs created with Firedrop2 at :

   http://www.voidspace.org.uk/planetfiredrop/

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml


> 
> Regards,
> Cliff
> 
> --



From zefirek at Speacock.Pau.Apoznan.Mpl  Sat Sep  2 12:46:56 2006
From: zefirek at Speacock.Pau.Apoznan.Mpl (zefciu)
Date: Sat, 02 Sep 2006 18:46:56 +0200
Subject: How to run Python file?
In-Reply-To: <pan.2006.09.02.15.34.21.458976@users.sf.net>
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
	<pan.2006.09.02.15.34.21.458976@users.sf.net>
Message-ID: <edcc3k$em0$1@inews.gazeta.pl>

Pontus Ekberg wrote:
> mistral wrote:
> 
>> I have installed ActivePython
>> http://www.activestate.com/Products/ActivePython/
>> How I can run Python file, test.py?
> 
> $ python test.py
> 
> or
> 
> $ ./test.py (if test.py is executable)
> 
> 
Thats if you use un*x.  If you word under windows, the first would work,
but rather use some  IDE like IDLE or SPE than mess with the windows
command line.  Then you just load the file and run it from the menu.

zefciu


From phil_nospam_schmidt at yahoo.com  Wed Sep 27 13:01:19 2006
From: phil_nospam_schmidt at yahoo.com (Phil Schmidt)
Date: 27 Sep 2006 10:01:19 -0700
Subject: How to change menu text with Tkinter?
In-Reply-To: <op.tgji501prqur0o@eb.pragmadev>
References: <1159363771.905537.224780@d34g2000cwd.googlegroups.com>
	<op.tgji501prqur0o@eb.pragmadev>
Message-ID: <1159376479.859247.323260@h48g2000cwc.googlegroups.com>


Eric Brunel wrote:


>
> But Marc's answer still applies: it's a lot of work for something that
> will usually be configured once. So requiring to restart the tool when the
> UI language changes should be acceptable.
>

Thanks for the example, that helps.

I agree with you and Marc regarding the language configuration method.
The requirements aren't mine however - my customer wants the language
selectable at runtime, so I'm kind of stuck with that.

Phil



From MonkeeSage at gmail.com  Sat Sep 30 03:37:00 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 00:37:00 -0700
Subject: The Python world tries to be polite [formerly offensive to
	another language]
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<1159555450.721085.51710@h48g2000cwc.googlegroups.com>
	<mailman.990.1159598785.10491.python-list@python.org>
Message-ID: <1159601820.592847.42160@i3g2000cwc.googlegroups.com>

Steve Holden wrote:
> Perhaps so, but none the less comp.lang.perl has a demonstrable history
> of newbie-flaming. Don't know what it's like now, as it's years since I
> read that group, but they used to just love the smell of crisply-toasted
> newbie in the morning ;-)

C'mon! No reason why a newbie should be confused by a hyper-fatugly,
err, "hyper-fatarrow" every now and then [1]! What, are newbies totally
dense or something?! ;))

[1] http://www.nntp.perl.org/group/perl.perl6.language/25946

Regards,
Jordan



From altemurbugra at gmail.com  Tue Sep 26 05:37:18 2006
From: altemurbugra at gmail.com (altemurbugra at gmail.com)
Date: 26 Sep 2006 02:37:18 -0700
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <mailman.643.1159255733.10491.python-list@python.org>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.643.1159255733.10491.python-list@python.org>
Message-ID: <1159263438.026179.145120@b28g2000cwb.googlegroups.com>

GOOGLE IS NOT OUR SUBJECT ANY MORE.

MY GOAL IS NOT MAKING SEARCH ON GOOGLE:
MY GOAL IS MAKING A SEARCH ON
www.onelook.com, for example



From martin at v.loewis.de  Sat Sep 30 04:08:19 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 30 Sep 2006 10:08:19 +0200
Subject: MySQLdb for Python 2.5
In-Reply-To: <5_ednYPtY9vSSoDYnZ2dnUVZ_rqdnZ2d@insightbb.com>
References: <5_ednYPtY9vSSoDYnZ2dnUVZ_rqdnZ2d@insightbb.com>
Message-ID: <451e25f3$0$25620$9b622d9e@news.freenet.de>

Harold Trammel schrieb:
> Does anyone know the status of a version of MySQLdb that will work with
> Python 2.5? 

AFAICT, MySQLdb 1.2.1 builds and works just fine.

Regards,
Martin


From laurent.pointal at wanadoo.fr  Mon Sep 18 13:36:12 2006
From: laurent.pointal at wanadoo.fr (Laurent Pointal)
Date: Mon, 18 Sep 2006 19:36:12 +0200
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <450ed90c$0$27411$ba4acef3@news.orange.fr>

nicolasfr at gmail.com wrote:

> Hi,
> 
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.

I agree in some ways, Python docs could have better organization (more links
between related things).

> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
> 
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.
> 
> Regards,
> 
> Nicolas.
> -----
> http://www.pythondocs.info

Here is another URL of such a project, i bookmarked some times:
http://www.simisen.com/jmg/cpd/
And there is nothing beyond this URL, like many of such projects.

AFAIR there is a starting of Wiki documentation - like PHP docs, one page
per function, contributors comments & Co, from one main Python developers
(dont remember who start this neither what is the URL).

In all case, dont setup another new system, use
http://wiki.python.org/moin/, at least your work will not be lost.

A+

Laurent.





From p.lavarre at ieee.org  Sun Sep 24 18:13:12 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 24 Sep 2006 15:13:12 -0700
Subject: Reverse a String?
References: <mailman.505.1159045338.10491.python-list@python.org>
	<4515a15f$0$19913$4d3efbfe@news.sover.net>
	<1159047299.209370.261420@b28g2000cwb.googlegroups.com>
	<mailman.520.1159088110.10491.python-list@python.org>
Message-ID: <1159135991.941286.203480@i42g2000cwa.googlegroups.com>

> http://pyfaq.infogami.com/

Tell me more?

Clueless newbie me, thru this door I'm at three deaths and counting.
Does that Py Faq Wiki have a sandbox a la alt.test, and/or a tutorial?

// Death One:

http://pyfaq.infogami.com/_account/in?path=/
requires me to create a persisting ID "between 3 and 20 letters and
numbers", i.e., not an e-mail address.  Grumble, ok.

// Death Two:

http://pyfaq.infogami.com/programming-index
kicked back comment "How can I reverse a string, an array, a list,
etc.?" with "Sorry, that looks like spam. I'm not going to post it."

// Death Three:

Search infogami in clp gives me:
http://howto.infogami.com/createnewpages
which suggests:
http://pyfaq.infogami.com/how-do-i-reverse
which dies at "Sorry, that page could not be found."

//

Next clue?



From eurleif at ecritters.biz  Mon Sep 18 11:31:37 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Mon, 18 Sep 2006 11:31:37 -0400
Subject: Python programs always open source?
In-Reply-To: <mailman.233.1158592608.10491.python-list@python.org>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>	<mailman.227.1158581355.10491.python-list@python.org>	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
Message-ID: <450ebb84$0$19909$4d3efbfe@news.sover.net>

Steve Holden wrote:
> Leif K-Brooks wrote:
>> Ben Finney wrote:
>>
>>> So long as you're not distributing some or all of Python itself, or a
>>> derivative work, the license for Python has no legal effect on what
>>> license you choose for your own work.
>>
>>
>> How many Python programs use nothing from the standard library?
> 
> That doesn't matter either. The required copyright statements are 
> included in the Python interpreter. There is no reason to fear 
> distributing Python as a part of either open source or proprietary 
> works, and Guido framed the original license to allow precisely such 
> uses. Later versions have retained the same spirit.

Yes, I know that. I was replying to Ben Finney's claim that in a 
hypothetical world where Python was licensed under the GPL, there would 
still be no restriction on distributing Python programs under a 
closed-source license.


From tnleeuw at gmail.com  Fri Sep 15 12:03:53 2006
From: tnleeuw at gmail.com (Tim N. van der Leeuw)
Date: 15 Sep 2006 09:03:53 -0700
Subject: high level, fast XML package for Python?
In-Reply-To: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
Message-ID: <1158336232.952571.57310@p79g2000cwp.googlegroups.com>

Hi Gleb,

Gleb Rybkin wrote:
> I searched online, but couldn't really find a standard package for
> working with Python and XML -- everybody seems to suggest different
> ones.
>
> Is there a standard xml package for Python? Preferably high-level, fast
> and that can parse in-file, not in-memory since I  have to deal with
> potentially MBs of data.
>
> Thanks.

Another option is Amara; also quite high-level and also allows for
incremental parsing. I would say Amara is somewhat higher level than
ElementTree since it allows you to access your XML nodes as Python
objects (with some extra attributes and some minor warts), as well as
giving you XPath expressions on the object tree.

URL:

http://uche.ogbuji.net/tech/4suite/amara/

Best version currently available is version 1.1.7

It does work together with py2exe on windows if the need ever arises
for you but you have to fiddle a bit with it (ask for details on this
list if you ever need to do that)

 Cheers,

--Tim



From asterocean at gmail.com  Sat Sep 16 06:28:51 2006
From: asterocean at gmail.com (astarocean)
Date: 16 Sep 2006 03:28:51 -0700
Subject: strange result with json-server & zope
Message-ID: <1158402531.889644.151000@m7g2000cwm.googlegroups.com>

i'm using maildrophost to sendmail and wrote a script for it

when the script is called directly from web request , a letter
geneated with right things

but when the script is called from json-rpc, the letter generated
include a mess.
see the file with this letter

[the script]
body_html = container.mime_mail(body_html=body_html)
container.MailHost.send(messageText=body_html, mto=to_email,
mfrom=from_email, subject=subject, encode=None)

[mime_mail is a dtml-method]
<dtml-mime type="text/html" charset="utf8" encode="quoted-printable"
disposition="inline">
<dtml-var body_html missing="this is the body of mail goes">
</dtml-mime>

[enviroment]
Zope Version
(Zope 2.9.4-final, python 2.4.3, linux2)
Python Version
2.4.3 (#1, Sep 11 2006, 19:52:33) [GCC 3.4.6 20060404 (Red Hat
3.4.6-3)]
System Platform
linux2

strangely at another server, everythin runs smoothly
[enviroment]
Zope Version
(Zope 2.9.2-, python 2.4.3, linux2)
Python Version
2.4.3 (#1, Mar 31 2006, 17:42:57) [GCC 3.4.4 20050721 (Red Hat
3.4.4-2)]

[called directly from web request ]
##To:asterocean at gmail.com
##From:web_ztooo at 126.com
Message-Id: <20060915070110.5494.92581 at ztooo.ztooo.com>
Mime-Version: 1.0
Content-Type: multipart/mixed;
    boundary="127.0.0.1.500.5494.1158303670.500.4"
Subject: You probably forgot your password for Ztooo.com
To: asterocean at gmail.com
From: web_ztooo at 126.com
Date: Fri, 15 Sep 2006 15:01:10 -0500


--127.0.0.1.500.5494.1158303670.500.4
Content-Type: text/html;
    charset="utf8"
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html;
charset=3Dutf-8">
<title>You probably forgot your password for
Ztooo.com!=E6=82=A8=E5=8F=AF=
=E8=83=BD=E9=81=97=E5=BF=98=E4=BA=86=E6=91=98=E7=BD=91=E7=9A=84=E5=AF=86=E7=
=A0=81!</title>
</head>
<body>
<h3>=E6=82=A8=E5=8F=AF=E8=83=BD=E9=81=97=E5=BF=98=E4=BA=86=E6=91=98=E7=BD=
=91=E7=9A=84=E5=AF=86=E7=A0=81</h3>
<hr />
<p>&nbsp;&nbsp;&nbsp;&nbsp;=E6=82=A8=E7=9A=84=E5=AF=86=E7=A0=81=E6=98=AF
<f=
ont
    color=3D"blue"></font>
=EF=BC=8C=E4=BD=BF=E7=94=A8=E6=AD=A4=E9=82=AE=E7=
=AE=B1=E5=90=8D=E4=BD=9C=E4=B8=BA=E7=94=A8=E6=88=B7=E5=90=8D=E5=92=8C=E6=AD=
=A4=E5=AF=86=E7=A0=81=E7=99=BB=E5=BD=95=EF=BC=8C=E6=88=96=E8=80=85=E7=82=B9=
=E5=87=BB=E4=B8=8B=E9=9D=A2=E7=9A=84=E6=8C=89=E9=92=AE=E7=99=BB=E5=BD=95=EF=
=BC=9A</p>
<div>
  <form method=3D"post" action=3D"http://web3.com/index.htm"
        target=3D"_blank" enctype=3D"multipart/form-data">
    <input type=3D"hidden" name=3D"__ac_name" id=3D"__ac_name"
           size=3D"12" value=3D"asterocean at gmail.com">
    <input type=3D"hidden" name=3D"__ac_password" size=3D"12"
           value=3D"">
   =20
&nbsp;&nbsp;&nbsp;&nbsp;<input type=3D"submit"
value=3D"=E7=82=B9=E5=87=BB=
=E6=AD=A4=E5=A4=84=E7=99=BB=E5=BD=95">
   =20
  </form>
</div>
<p>&nbsp;&nbsp;&nbsp;&nbsp;=E7=99=BB=E5=BD=95=E5=90=8E=E6=82=A8=E5=8F=AF=E4=
=BB=A5=E4=BF=AE=E6=94=B9=E6=82=A8=E7=9A=84=E5=AF=86=E7=A0=81=E5=92=8C=E8=AE=
=BE=E7=BD=AE=E6=82=A8=E5=96=9C=E6=AC=A2=E7=9A=84=E7=AC=94=E5=90=8D=E3=80=82=
</p>
<br />
<h3>You probably forgot your password for Ztooo.com!</h3>
<hr />
<p>&nbsp;&nbsp;&nbsp;&nbsp;Your password is <font
    color=3D"blue"></font> , Use the mailboxname as username and this
passw=
ord to login , or click the button below:</p>
<div>
  <form method=3D"post" action=3D"http://web3.com/index.htm"
        target=3D"_blank" enctype=3D"multipart/form-data">
    <input type=3D"hidden" name=3D"__ac_name" id=3D"__ac_name"
           size=3D"12" value=3D"asterocean at gmail.com">
    <input type=3D"hidden" name=3D"__ac_password" size=3D"12"
           value=3D"">
     &nbsp;&nbsp;&nbsp;&nbsp;<input type=3D"submit" value=3D"Press here
to =
login">
 =20
  </form>
</div>
<p>&nbsp;&nbsp;&nbsp;&nbsp;You could change your password and set your
favo=
rite pseudonym after that.</p>
</body>
</html>


--127.0.0.1.500.5494.1158303670.500.4--

[called from json-rpc]
##To:asterocean at gmail.com
##From:web_ztooo at 126.com
Message-Id: <20060915070113.5494.93259 at ztooo.ztooo.com>
Mime-Version: 1.0
Content-Type: multipart/mixed;
    boundary="127.0.0.1.500.5494.1158303673.002.5"
Subject: You probably forgot your password for Ztooo.com
To: asterocean at gmail.com
From: web_ztooo at 126.com
Date: Fri, 15 Sep 2006 15:01:13 -0500


--127.0.0.1.500.5494.1158303673.002.5
Content-Type: text/html;
    charset="utf8"
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

< ! D O C T Y P E   H T M L   P U B L I C   " - / / W 3 C / / D T D   H
T M=
 L   4 . 0 1   T r a n s i t i o n a l / / E N "
 " h t t p : / / w w w . w 3 . o r g / T R / h t m l 4 / l o o s e . d
t d =
" >
 < h t m l >
 < h e a d >
 < m e t a   h t t p - e q u i v =3D " C o n t e n t - T y p e "   c o
n t =
e n t =3D " t e x t / h t m l ;   c h a r s e t =3D u t f - 8 " >
 < t i t l e > Y o u   p r o b a b l y   f o r g o t   y o u r   p a s
s w =
o r d   f o r   Z t o o o . c o m !
=A8`=EFS=FD=80W=90=D8_=86NXdQ=7F=84v=C6=
[
x! < / t i t l e >
 < / h e a d >
 < b o d y >
 < h 3 > =A8`=EFS=FD=80W=90=D8_=86NXdQ=7F=84v=C6[
x< / h 3 >
 < h r   / >
 < p > & n b s p ; & n b s p ; & n b s p ; & n b s p ; =A8`=84v=C6[
x/f
 < =
f o n t
         c o l o r =3D " b l u e " > < / f o n t >

=FF=7FO(udk=AE=90=B1{=

T\O:N(u7b
T=8CTdk=C6[
x{vU_
=FFb=80=B9p=FBQ
Nb=97=84v	c=AE=94{vU_=FF< /=
 p >
 < d i v >
     < f o r m   m e t h o d =3D " p o s t "   a c t i o n =3D " h t t
p : =
/ / w e b 3 . c o m / i n d e x . h t m "
                 t a r g e t =3D " _ b l a n k "   e n c t y p e =3D "
m u =
l t i p a r t / f o r m - d a t a " >
         < i n p u t   t y p e =3D " h i d d e n "   n a m e =3D " _ _
a c =
_ n a m e "   i d =3D " _ _ a c _ n a m e "
                       s i z e =3D " 1 2 "   v a l u e =3D " a s t e r
o c =
e a n @ g m a i l . c o m " >
         < i n p u t   t y p e =3D " h i d d e n "   n a m e =3D " _ _
a c =
_ p a s s w o r d "   s i z e =3D " 1 2 "
                       v a l u e =3D " " >

 & n b s p ; & n b s p ; & n b s p ; & n b s p ; < i n p u t   t y p e
=3D =
" s u b m i t "   v a l u e =3D " =B9p=FBQdkY{vU_" >

     < / f o r m >
 < / d i v >
 < p > & n b s p ; & n b s p ; & n b s p ; & n b s p ;
{vU_T=A8`=EFS=E5N=
=EEO9e=A8`=84v=C6[
x=8CT=BE=8Bn=7F=A8`=9CU"k=84v{
T0< / p >
 < b r   / >
 < h 3 > Y o u   p r o b a b l y   f o r g o t   y o u r   p a s s w o
r d =
  f o r   Z t o o o . c o m ! < / h 3 >
 < h r   / >
 < p > & n b s p ; & n b s p ; & n b s p ; & n b s p ; Y o u r   p a s
s w =
o r d   i s   < f o n t
         c o l o r =3D " b l u e " > < / f o n t >   ,   U s e   t h e
 m =
a i l b o x n a m e   a s   u s e r n a m e   a n d   t h i s   p a s s
w o=
 r d   t o   l o g i n   ,   o r   c l i c k   t h e   b u t t o n   b
e l =
o w : < / p >
 < d i v >
     < f o r m   m e t h o d =3D " p o s t "   a c t i o n =3D " h t t
p : =
/ / w e b 3 . c o m / i n d e x . h t m "
                 t a r g e t =3D " _ b l a n k "   e n c t y p e =3D "
m u =
l t i p a r t / f o r m - d a t a " >
         < i n p u t   t y p e =3D " h i d d e n "   n a m e =3D " _ _
a c =
_ n a m e "   i d =3D " _ _ a c _ n a m e "
                       s i z e =3D " 1 2 "   v a l u e =3D " a s t e r
o c =
e a n @ g m a i l . c o m " >
         < i n p u t   t y p e =3D " h i d d e n "   n a m e =3D " _ _
a c =
_ p a s s w o r d "   s i z e =3D " 1 2 "
                       v a l u e =3D " " >
           & n b s p ; & n b s p ; & n b s p ; & n b s p ; < i n p u t
 t =
y p e =3D " s u b m i t "   v a l u e =3D " P r e s s   h e r e   t o
l o=
 g i n " >

     < / f o r m >
 < / d i v >
 < p > & n b s p ; & n b s p ; & n b s p ; & n b s p ; Y o u   c o u l
d   =
c h a n g e   y o u r   p a s s w o r d   a n d   s e t   y o u r   f a
v o=
 r i t e   p s e u d o n y m   a f t e r   t h a t . < / p >
 < / b o d y >
 < / h t m l >  
 
 
--127.0.0.1.500.5494.1158303673.002.5--



From ksenia.marasanova at gmail.com  Thu Sep 21 08:46:12 2006
From: ksenia.marasanova at gmail.com (Ksenia Marasanova)
Date: Thu, 21 Sep 2006 14:46:12 +0200
Subject: text representation of HTML
In-Reply-To: <44be22d1$0$881$ba4acef3@news.orange.fr>
References: <mailman.8329.1153303761.27775.python-list@python.org>
	<4i6f8jF2ce5pU1@uni-berlin.de>
	<44be22d1$0$881$ba4acef3@news.orange.fr>
Message-ID: <130df1930609210546l27fef3f5r51eee702eb926b63@mail.gmail.com>

Sorry for the late reply... better too late than never :)
Thanks to all for the tips. Stripogram is the winner, since it is the
most configurable and accept line-length parameter, which is handy for
email...

Ksenia.

On 7/19/06, Laurent Rahuel <lrahuel.notgood at voila.fr> wrote:
> Hi,
>
> I guess stripogram would be more pythonic :
> http://sourceforge.net/project/showfiles.php?group_id=1083
>
> Regards,
>
> Laurent
>
> Diez B. Roggisch wrote:
>
> > Ksenia Marasanova wrote:
> >
> >> Hi,
> >>
> >> I am looking for a library that will give me very simple text
> >> representation of HTML.
> >> For example
> >> <div><h1>Title</h1><p>This is a <br />test</p></div>
> >>
> >> will be transformed to:
> >>
> >> Title
> >>
> >> This is a
> >> test
> >>
> >>
> >> i want to send plain text alternative of html email, and would prefer
> >> to do it automatically from HTML source.
> >> Any hints?
> >
> > html2text is a commandline tool. You can invoke it from python using
> > subprocess.
> >
> > Diez
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From david.bear at asu.edu  Thu Sep 28 13:09:52 2006
From: david.bear at asu.edu (David Bear)
Date: Thu, 28 Sep 2006 10:09:52 -0700
Subject: help tranlating perl expressions
Message-ID: <5452284.reKt6RD0Uf@teancum>

I am trying to translate some perl code to python and I need some advice on
making fixed sized strings. The perl code creates a sha1 signatured using a
key and a 'pad'. It creates fixed sized strings as follows:

 my $klen = length($key);
 my $blen = 64;
 my $ipad = chr(0x36)x$blen;
 my $opad = chr(0x5c)x$blen;

I don't know if I ever seen any way in python of created a fixed size
string. Can anyone show me how to implement the same statements in python?

Next, it zero-fills a string to a certain size.

 if($klen <= $blen) {
  $key .= "\0"x($blen-length($key)); #zero-fill to blocksize
 } else {
  $key = sha1($key);                 #if longer, pre-hash key
 }

Finally it concatenates and xors these strings together like this:

 return sha1($key^$opad . sha1($key^$ipad . $data));

I when python XOR's strings, is it the same as when perl xor's them?

-- 
David Bear
-- let me buy your intellectual property, I want to own your thoughts --


From mccredie at gmail.com  Wed Sep 20 20:30:59 2006
From: mccredie at gmail.com (Matimus)
Date: 20 Sep 2006 17:30:59 -0700
Subject: Trying to run an external program
In-Reply-To: <mailman.357.1158793513.10491.python-list@python.org>
References: <mailman.357.1158793513.10491.python-list@python.org>
Message-ID: <1158798659.619616.255160@b28g2000cwb.googlegroups.com>

Brant Sears wrote:
> Hi. I'm new to Python and I am trying to use the latest release (2.5)
> on Windows XP.
>
> What I want to do is execute a program and have the results of the
> execution assigned to a variable. According to the documentation the
> way to do this is as follows:
>
> import commands
> x = commands.getstatusoutput('dir')
>
> This should assign "x" to be the output of the command "dir".
> However, when I run this (or any other command), x ends up being:
>
> (1, "'{' is not recognized as an internal or external command,
> \noperable program or batch file.")
>
>  From looking through the documentation, I'm believing that the
> implementation of commands.getstatusoutput is actually some multi-
> step thing that starts with issuing the bracket character that is
> being choked on. This leads me to believe that Python or perhaps just
> the commands module is not setup correctly on my computer.
>
> I installed Python using the Python2-5.msi link that I found at:
> http://www.python.org/download/releases/2.5/
>
> I left everything the default during installation, so Python was
> installed to C:\Python25. The only other thing I did was add this
> PATH variable on my computer.
>
> Any ideas on what I might do to troubleshoot this?
>
> Thanks!
>
> Brant Sears

commands is a Unix module, hence it will not work in Windows XP. If you
don't need the return code try this:

import os

pipe = os.popen('dir')
x = pipe.read()
# do something with x

-Matt



From manuel at prolink.de  Mon Sep  4 06:42:18 2006
From: manuel at prolink.de (Manuel Bleichner)
Date: Mon, 04 Sep 2006 12:42:18 +0200
Subject: Classes referencing each other
In-Reply-To: <_a_Jg.1458$v%4.757@newsread1.news.pas.earthlink.net>
References: <mailman.10236.1157100375.27775.python-list@python.org>
	<1157105121.594880.59530@m73g2000cwd.googlegroups.com>
	<mailman.10243.1157107561.27775.python-list@python.org>
	<_a_Jg.1458$v%4.757@newsread1.news.pas.earthlink.net>
Message-ID: <op.tfcn0suw58416w@merkur.intern.prolink.de>

> 	Does the "EMCenter" really need to /subclass/ from all of those? Or
> would it be better to make some of those attributes of an EMCenter
> INSTANCE (passing in instances of the others to the __init__() ).
>
> 	class EMCenter(object):
> 		def __init__(self, b, r, c, ol):
> 			self.building = b
> 			self.researcher = r
> 			...
>
> 	IOW: the difference between:
> 			an EMCenter IS a building AND
> 							IS a researcher AND
> 							IS a constructor AND
> 							IS a "OnLand"

=> These relations are correct:
the EM Center can build units and research technologies, therefore
it is a researcher and constructor.


> Note that "OnLand" already sounds like an attribute -- and at that,
> maybe an attribute of "Building"

Yes, this one is really an attribute, but it's not yet implemented and
I wasn't sure how to do it when I wrote the template code.


> 	As soon as you get a recursive definition, you MUST split...

Yes =(
I'll have to try to reduce such relations to a minimum...
It would have just been nice to declare and later define the classes,
but such a feature would bloat the neat python syntax.

Thanks for all the text you wrote, but it all went a bit in the
wrong direction, sorry :)


Manuel



From onurb at xiludom.gro  Wed Sep  6 10:48:48 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 06 Sep 2006 16:48:48 +0200
Subject: python vs java
In-Reply-To: <edmefq$t5n$1@news4.fe.internet.bosch.com>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
Message-ID: <44fedfd2$0$32654$626a54ce@news.free.fr>

Aravind wrote:
> hi,
> 
> some of my friends told that python and java are similar in the idea of
> platform independency.

Well, not quite IMHO.

Java treats the problem by taking the autistic attitude of pretending
the underlying platform doesn't exists - which can be a major PITA.

Python is much more pragmatic, and can even offer really strong
integration with the platform *without* sacrifying portability - the
core language is platform-independant and tries to help you wrinting
platform-independant code (cf the os and os.path modules), and
platform-specific stuff is usually isolated in distinct packages with a
BIG caution note on it !-)

> Can anyone give me an idea as i'm a newbie to java
> and python but used to C++. My idea is to develop an app which can run both
> in windows and linux.

With a GUI ? If so, you probably want to check out wxPython or PyGTK
(wxPython will also buy you MacOS X IIRC, and wil perhaps be easier to
install on Windows).

Else (web, command-line, what else ?), you should not have any
particular problem as long as you avoid using platform-specific packages
and always use the portability helper features (ie os.path etc).

Coming from C++, you'll probably need a few days to grasp Python's
object model and idioms (Python looks much less like a dumbed-down C++
than Java), but my bet is that you'll be productive *way* sooner with
Python, and *much* more productive.

My 2 cents,
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From metaperl at gmail.com  Tue Sep 12 01:21:17 2006
From: metaperl at gmail.com (metaperl)
Date: 11 Sep 2006 22:21:17 -0700
Subject: How to get the package, file, and line of a method/function invocant?
Message-ID: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>

I am looking for something like the caller() routine in Perl:
   http://perldoc.perl.org/functions/caller.html

I am writing a script which needs to be allocated an object containing
a set of paths that it will use for reading and writing during it's
execution:

import os.path

class logic:
    def __init__(self):
        std_dirs = "in out zip arc".split()
        self.root = os.path.dirname(__main__.__file__) # doesnt work
        for d in std_dirs:
            mkdir = "%s/%s" % (self.root, d)
            os.mkdir(mkdir)
            setattr(self, d, mkdir)


# Then the script can do this:

directories = data.storage.logic()
infile = "%s/%s" % (directories.in, "infile")
f = open (infile, 'r')

# Of course I could cheat and pass it, but I don't want to:

directories = data.storage.logic(__file__)



From insyte at gmail.com  Mon Sep 18 15:48:28 2006
From: insyte at gmail.com (insyte at gmail.com)
Date: 18 Sep 2006 12:48:28 -0700
Subject: Threads blocking on OpenBSD w/ Python 2.4.2
Message-ID: <1158608907.994418.260970@e3g2000cwe.googlegroups.com>

I'm attempting to write a faily simple threaded app that fires off a
thread to select() on a FIFO while the main loop handles data read from
that pipe and a few other tasks.  For some reason, calls to
time.sleep() seem to block until the first time data is dumped into the
pipe.  Clearly, I could work around this quite easily by "priming the
pipe" as it were with a bit of garbage data.  However, I'd rather
understand the problem.

Here's a code snippet:

===========================================
ipList = []

def readPipe(pipeName):
    p = file(pipeName, 'r')
    while True:
        x = select.select([p.fileno()], [], [])
        dataLine = p.readline()
        ipList.append(dataLine)

def main():
    if not os.path.exists('bob'):
        os.mkfifo('bob')
        print "FIFO created."
    print "Starting thread."
    thread.start_new_thread(readPipe, ('bob',))
    print "Thread started."
    while True:
        print time.time()
        time.sleep(1)
===========================================

On Linux and OS X, this behaves as expected.  Running the code
immediately produces output like this:

tarja:~ ben$ ./mycapd
Starting thread.
Thread started.
1158608481.67 []
1158608482.67 []
1158608483.67 []
...

But on OpenBSD I get this:

[ ben at rampart ] $ ./mycapd
Starting thread.
Thread started.
1158608528.5 []

And there it hangs until I dump some data into the fifo.  Then it runs
as expected, dumping out a timestamp every second.

So the question is this:  Am I doing something wrong or is there a
problem on OpenBSD?

-Ben



From simon.hibbs at gmail.com  Wed Sep  6 09:06:09 2006
From: simon.hibbs at gmail.com (Simon Hibbs)
Date: 6 Sep 2006 06:06:09 -0700
Subject: python vs java
In-Reply-To: <edmefq$t5n$1@news4.fe.internet.bosch.com>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
Message-ID: <1157547969.295647.225430@i3g2000cwc.googlegroups.com>


Aravind wrote:
> hi,
>
> some of my friends told that python and java are similar in the idea of
> platform independency. Can anyone give me an idea as i'm a newbie to java
> and python but used to C++. My idea is to develop an app which can run both
> in windows and linux.

That's true to an extent. Both Java and Python come with extensive
standard libraries, providing a useful toolkit for the programmer.
Python does have a number of cross-platform GUI toolkits abailable too,
including one in the standard library, although WxWidgets (formerly
WxWindows) is also popular.

I'd say that Python is easier to learn and more productive as a
language, but Java has a much larger selection of add-ons and libraries
available. I can't give you much more help without knowing what the app
will do, and therefore what language features or library/framework
support would be helpful.

Simon Hibbs



From apardon at forel.vub.ac.be  Thu Sep 28 03:09:53 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 28 Sep 2006 07:09:53 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<Xns984B746409A6BOKB@199.45.49.11>
Message-ID: <slrnehmta1.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-27, OKB (not okblacke) <brenNOSPAMbarn at NObrenSPAMbarn.net> wrote:
> Antoon Pardon wrote:
>
>> To begin with this already fails:
>> 
>>>>> for i in xrange(Top):
>> ...   print i
>
>     	What do you expect this to do?  Loop forever?

Yes that is what I would expect. If someone would ask me
to implement a function like xrange it would look something
like the following (*)

  def xrange(start=1, stop, step=1):

    while start < stop:
      yield start
      start += step

Since Top is supposed to be bigger than any other value this would
indeed loop forever. The only reason that this doesn't work with
the builtin, is because the builtin xrange insist on its arguments
being ints instead of allowing duck typing.

(*) Yes I know this isn't legal python. I just wrote it like this
to make the intention clear instead of putting in the code that
would actually behave like xrange with regards to its defaults.
IMO that would just detract from the actual code.

-- 
Antoon Pardon


From fredrik at pythonware.com  Mon Sep 25 14:50:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 20:50:32 +0200
Subject: SimpleXMLRPCServer and socket
In-Reply-To: <9d52368b0609251120h3ff1fc26y4a4325e0f05b4d25@mail.gmail.com>
References: <9d52368b0609251120h3ff1fc26y4a4325e0f05b4d25@mail.gmail.com>
Message-ID: <ef98dn$3of$1@sea.gmane.org>

Juju wrote:

> The problem I have, is I don't know how to get the port used by the
> remote host ?

just curious, but why do you need the *port* number used by the remote 
host ?

</F>



From parker at hiredatum.demon.co.uk  Sun Sep 17 06:54:30 2006
From: parker at hiredatum.demon.co.uk (Ian Parker)
Date: Sun, 17 Sep 2006 11:54:30 +0100
Subject: User defined functions through Automation in Excel 2003
References: <1157270501.997826.279790@74g2000cwt.googlegroups.com>
	<1157287011.801832.312350@p79g2000cwp.googlegroups.com>
Message-ID: <sBdadNCmlSDFFwzo@hiredatum.demon.co.uk>

In message <1157287011.801832.312350 at p79g2000cwp.googlegroups.com>, 
jpgreenwald <jpgreenwald at gmail.com> writes
>Ive been looking more into this subject and now have a few things to
>add.  Im using some c# code that works in doing what I want (adds the
>function into excel):
>
>using System;
>using System.Runtime.InteropServices;
>
>namespace jtest {
>    [ClassInterface(ClassInterfaceType.AutoDual)]
>    public class test{
>        public test(){
>        }
>        public double Add2(double x, double y) {
>            return v1 + v2;
>        }
>    }
>}
>
>I messed arround with it and without
>"[ClassInterface(ClassInterfaceType.AutoDual)]" the same thing happens
>that happened in python;  the dll would load but the function is not
>usuable.  So reading some more I was *thinking* that it was the early
>bound calls allowed by the AutoDual Interface that I cant seem to easy
>replicate in python.  Now I was *thinking* again that the only way to
>replicate that would be to use a typelib but I do not know how to
>generate that using a idl file I dont know how to create.  Again I was
>*thinking* that if I had a typelib I could use makepy and then gencache
>so when I use py2exe the typelib would be used and early bound calls
>would be used.
>
>Am I completely Insane and following a completely wrong thought process
>here?  If not, how do I make a idl file (then use midl.exe ?), and then
>make a tbl?  Thanks again for your thought.
>
>-Jesse
>

Darn, I was interested in seeing an answer for this, although dismally 
unable to contribute myself.  Did I miss the responses?

Regards

Ian
-- 
Ian Parker


From mjj at pythonin.dk  Sun Sep 10 10:48:00 2006
From: mjj at pythonin.dk (Morten Juhl Johansen)
Date: Sun, 10 Sep 2006 16:48:00 +0200
Subject: OT: What encoding is this?
In-Reply-To: <4503D341.2040509@v.loewis.de>
References: <mailman.219.1157842005.5279.python-list@python.org>
	<XvIMg.26282$rP1.505@news-server.bigpond.net.au>
	<4503D341.2040509@v.loewis.de>
Message-ID: <450424cb$0$75041$14726298@news.sunsite.dk>

Martin v. L?wis wrote:
> Neil Hodgson schrieb:
>>>     http://www.loppen.dk/side.php?navn=getin
>> More pages without declarations are produced on Windows so
>> I'd guess that its Windows-1252. To tell, look for prices in Euros ("?")
>> on the site.
> 
> Ah, but they still use krones in Denmark :-)
> 
> Regards,
> Martin

True. Yes, it is Danish.
The specific Danish characters ??? are visible with several encodings.
(I write this characters in unicode here).
And there are no prices on that page, since it describes the hardware
available at the small concert place Loppen.

Cheers,
Morten


From tim at tdw.net  Mon Sep 11 12:34:45 2006
From: tim at tdw.net (Tim Williams)
Date: Mon, 11 Sep 2006 17:34:45 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <W52089617.803.12639.1@mx-extra>
References: <45057B5E.7010306@googlemail.com> <ee3urn$ane$1@sea.gmane.org>
	<W52087337.337.12601.3@mx-extra>
	<9afea2ac0609110910lf762f6ft6672b6dc092e5deb@mail.gmail.com>
	<W52089617.803.12639.1@mx-extra>
Message-ID: <9afea2ac0609110934j32fad83cl87a662d0781ca473@mail.gmail.com>

On 11/09/06, Hari Sekhon <hpsekhon at googlemail.com> wrote:
> Tim Williams wrote:
> > On 11/09/06, Hari Sekhon <hpsekhon at googlemail.com> wrote:
> >>
> >>  Steve Holden wrote:
> >>  Hari Sekhon wrote:
> >>
> >>
> >>  The easiest way to test whether the command will run is to try and run
> >> it. If the program doesn't exist then you'll get an exception, which you
> >> can catch. Otherwise you'll be stuck with non-portable mechanisms for
> >> each platform anyway ...
> >>
> >> regards
> >>  Steve
> >>
> >>
> >>  Yeah, this occurred to me just after I sent the mail, but I don't
> >> really
> >> want to run the program because it will go off and do some work and take
> >> time to come back. If there is a better way then that would be great. I
> >> can't think of anything other than what you have suggested with a
> >> message
> >> saying that the program wasn't found in the path which would be the most
> >> appropriate error since the path could also be wrong.
> >
> >
> > If you run your wrapper and the program exists then you don't have to
> > test for it,  so the overall process is quicker and cleaner than
> > testing-for *then* running the program
> >
> > If you run your wrapper and the program doesn't exist, then you have
> > performed your "if exists"  test without extra code and with very
> > little processing, and the raised exception will lead you nicely into
> > your "not exists" scenario.
> >
> > try:
> >    run_somecommand
> > except:
> >    print "you don't have %s installed" % somecommand
> >
> >
> > HTH :)
> >
> The down side to that is the program has to be run which consumes time
> and slows the script down a fair bit (as well as outputting garbage to
> the screen)
>

Sorry,  I don't follow!!

If the program doesn't exist how can you run it ???

If the program does exist then running is what you wanted it to do
anyway and you've saved doing a test for it first.

:)

-- 

Tim Williams


From fred at osuosl.org  Fri Sep  8 21:29:12 2006
From: fred at osuosl.org (Frederic Wenzel)
Date: Fri, 8 Sep 2006 18:29:12 -0700
Subject: python readline error - please help - need it for scanner!
In-Reply-To: <20060908210124.mys07r7c0k0o80k8@webmail.duke.edu>
References: <20060908210124.mys07r7c0k0o80k8@webmail.duke.edu>
Message-ID: <5a8943c0609081829u681ba93bu2c08a3deda3ed68a@mail.gmail.com>

On 9/8/06, benjamin.grant at duke.edu <benjamin.grant at duke.edu> wrote:
> can configure, make and install
> everything fine.  I'm using python 2.4  I have ubuntu dapper drake. I am
> trying to install hplip which requires python.  When I do this, this
> also works but while running the following error occurs:
> Traceback (most recent call last):
>   File "/usr/local/bin/hp-setup", line 31, in ?
>     import readline, gzip
> ImportError: No module named readline
>
>
> It appears as though for some reaosn the readline module is not being
> installed on my system.

I suggest you uninstall python from your system:

sudo apt-get remove python

and reinstall it. Maybe something went wrong the first time you tried
(reboot while installing or other crazy things).

The python packages coming with Ubuntu are working pretty well, usually.

Fred


From mihamina.rakotomandimby at etu.univ-orleans.fr  Sat Sep 16 15:27:19 2006
From: mihamina.rakotomandimby at etu.univ-orleans.fr (Rakotomandimby (R12y))
Date: Sat, 16 Sep 2006 21:27:19 +0200
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.16.19.27.19.814621@etu.univ-orleans.fr>

On Sat, 16 Sep 2006 10:40:43 -0700, nicolasfr wrote:
>>> I have read many messages of people complaining about the documentation,
>>> it's lack of examples and the use of complicated sentences that you
>>> need to read 10 times before understanding what it means.
>> Where have you read that?
> http://xahlee.org/UnixResource_dir/writ/python_doc.html
> http://mail.python.org/pipermail/python-list/2005-May/280634.html
> I think the PHP documentation is a really good one in comparison.

What you should have done first is to suggest to contribute to the
official Python doc.
Then, if you encounter too much dumbs (and only in that case) you could
fork docs.python.org and do your own project.
That's the way free software works.



From george.sakkis at gmail.com  Tue Sep 26 13:22:45 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 10:22:45 -0700
Subject: identifying new not inherited methods
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
	<1159290259.031941.315720@e3g2000cwe.googlegroups.com>
Message-ID: <1159291365.772556.212200@i3g2000cwc.googlegroups.com>

malkarouri at gmail.com wrote:

> George Sakkis wrote:
> [...]
> > I'd rather have it as a function, not attached to a specific class:
> >
>
> Thanks a lot George, that was what I was looking for. Got to
> understand/appreciate inspect more.
> Of course it works as a method. So, other than having it as a general
> utility, I presume there is no special reason to have it as a function
> rather than a method..

You're looking at it backwards; there's no particular reason this
should be a method of class A since it can be used for any arbitrary
object with no extra overhead. Now, if you intend to use it only for
instances of A and its subclasses, the only difference would be
syntactic; if you prefer x.list_cmds() from list_cmds(x), go with the
method.

George



From skip at pobox.com  Fri Sep  8 22:59:22 2006
From: skip at pobox.com (skip at pobox.com)
Date: Fri, 8 Sep 2006 21:59:22 -0500
Subject: mysqldb + multi-threading
In-Reply-To: <yKmMg.7783$tU.2787@newssvr21.news.prodigy.com>
References: <0piMg.136445$LF4.125458@dukeread05>
	<24kMg.11472$q63.11207@newssvr13.news.prodigy.com>
	<mailman.177.1157747400.5279.python-list@python.org>
	<yKmMg.7783$tU.2787@newssvr21.news.prodigy.com>
Message-ID: <17666.11786.992717.476633@montanaro.dyndns.org>


    Bryan> Go with your gut. Python threads are reasonably portable, and
    Bryan> work well on modern MS-Windows.

    >> Maybe ignore your gut and read the documentation. ;-)

    Bryan> What in the documentation do you think answers the question?

The part where it says that if MySQLdb.threadsafety == 1 it's not safe to
share connections.

Skip


From lycka at carmen.se  Fri Sep 29 12:33:02 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Fri, 29 Sep 2006 18:33:02 +0200
Subject: Leave the putdowns in the Perl community, the Python world does
	not need them
In-Reply-To: <1159194945.283831.236510@b28g2000cwb.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
	<1159194945.283831.236510@b28g2000cwb.googlegroups.com>
Message-ID: <efjhru$7s3$1@wake.carmen.se>

rdsteph at mac.com wrote:
> Steve makes a good point. Fredrik is one of the most important
> contributors of Python code, tools, etc and as far as I am concerned,
> that is so important that it gives him the right to be cranky from tiem
> to time.

Since February last year I've had the opportunity to write most of
my code in Python, in a very cool company with lots of bright people.
When I asked why they started to use Python here, it turned out that
a course held by a certain Fredrik Lundh was something of a turning
point... It seems that made them see the light.

I'm very thankful for that!

(As I understood it, the reason for the Python course, was actually
that some third party product used Python. I'm pretty sure we don't
use that product any longer, but we certainly kept Python.)

Today, we actually hold Python courses ourselves, for customers from
all over the globe (mainly big airlines).

In my opinion, the most important aspect of contributors to a forum
like c.l.py is signal/noise ratio. I much prefer competent but rude
remarks to friendly ignorance which just wastes my time.

Calling someone stupid might not be the most pedagogic or diplomatic
approach when an ignorant person fails to realize his limitations,
but it's understandable. Being so stupid is also understandable.

It's easy for reasonably smart people to find (perceived) flaws in
the reasonings of others, but with age I've learned that I can usually
learn a lot from others even if I feel that I can crush their arguments. 
There is usually something more behind their resistance to my ideas,
and if I manage to figure out what the real problem is, I can often
avoid getting into trouble...

The best discussions are the ones that make me change my mind about
something. Then I've grown. That's difficult if I let my ego be in
charge.

I guess you either need to be involved some fairly big, real world
development project where APIs are used by many people outside the
project, or alternatively read (and understand) any serious book on
software engineering, to really realize that changing public APIs
*is* a major issue. If you use Python more as a toy, and just write
snippets, it's difficult to imagine the cost of small API changes
for the big organizations who use the same APIs.


From nick at craig-wood.com  Tue Sep 12 10:30:05 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Tue, 12 Sep 2006 09:30:05 -0500
Subject: best way of testing a program exists before using it?
References: <mailman.324.1158050420.5279.python-list@python.org>
Message-ID: <slrnegdeds.5j8.nick@irishsea.home.craig-wood.com>

Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
>  [Nick Craig-Wood]
> 
> | Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
> | >          if os.path.isfile (filepath):
> | >            print filepath
> | 
> | You might get a more accurate result using
> | 
> |   os.access(filepath, os.X_OK)
> | 
> | instead of
> | 
> |   os.path.isfile(filepath)
> | 
> | Which checks the file is executable
> 
>  Sadly, not under Win32, hence the shenanigans with
>  the PATHEXT variable :)

Make a patch for os.access()?  It says in the docs it works on
Windows!

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From hpsekhon at googlemail.com  Mon Sep 11 11:06:06 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Mon, 11 Sep 2006 16:06:06 +0100
Subject: best way of testing a program exists before using it?
Message-ID: <45057B5E.7010306@googlemail.com>

I am writing a wrapper to a binary command to run it and then do 
something with the xml output from it.

What is the best way of making sure that the command is installed on the 
system before I try to execute it, like the python equivalent of the 
unix command "which"?

Otherwise I'd have to do something like:

if os.system('which somecommand') != 0:
    print "you don't have %s installed" % somecommand
    sys.exit(1)

I know that isn't portable which is why a python solution would be 
better (although this will run on unix anyway, but it'd be nice if it 
ran on windows too).


-h

-- 
Hari Sekhon



From gh at ghaering.de  Tue Sep 12 06:43:22 2006
From: gh at ghaering.de (=?ISO-8859-1?Q?Gerhard_H=E4ring?=)
Date: Tue, 12 Sep 2006 12:43:22 +0200
Subject: [ANN] markup.py 1.5 - a lightweight HTML/XML generator
In-Reply-To: <5f56302b0609041452w7eec63d8o26a1b478b94c8274@mail.gmail.com>
References: <5f56302b0609041452w7eec63d8o26a1b478b94c8274@mail.gmail.com>
Message-ID: <ee62ot$pvh$1@sea.gmane.org>

Daniel Nogradi wrote:
> A new release of markup.py is available at
> 
> http://markup.sourceforge.net/
> 
> The markup module is an intuitive, lightweight, easy-to-use,
> customizable and pythonic HTML/XML generator. [...]

It's more than only a bit confusing that there's also

Markup: A toolkit for stream-based generation of markup for the web at 
http://markup.edgewall.org/ - basically a replacement for the Kid XHTML 
templating solution.

At first I was confusing your project with the other package, which I 
was planning to give a try sooner or later.

-- Gerhard



From eric.pederson at gmail.com  Sat Sep  9 19:08:29 2006
From: eric.pederson at gmail.com (Eric Pederson)
Date: Sat, 09 Sep 2006 15:08:29 -0800
Subject: OT: What encoding is this?
In-Reply-To: <17667.17490.12612.591715@montanaro.dyndns.org>
References: <17667.17490.12612.591715@montanaro.dyndns.org>
Message-ID: <4503496D.6090302@gmail.com>

skip at pobox.com wrote:

>Way off-topic for Python, but can someone tell me what encoding was used in
>this web page:
>
>    http://www.loppen.dk/side.php?navn=getin
>
>I'm guessing ISO-8859-15, but the page doesn't indicate and it's none of the
>ones available in Safari.
>
>Thanks,
>
>Skip
>  
>
ISO-8859-1 per Mozilla


From cliff at develix.com  Tue Sep 12 14:05:31 2006
From: cliff at develix.com (Cliff Wells)
Date: Tue, 12 Sep 2006 11:05:31 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee642j$uib$1@sea.gmane.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<df2316bd0609111928q65f9dd54hf928b39b01677cb@mail.gmail.com>
	<ee642j$uib$1@sea.gmane.org>
Message-ID: <1158084331.28885.0.camel@devilbox>

On Tue, 2006-09-12 at 13:01 +0200, Fredrik Lundh wrote:
> Mike Owens wrote:
> 
> > Crackpot? And now we get to why I took the flamebait -- wonderfully
> > constructive comments such as this.
> > 
> > I know SQLite's author. Besides being a nice and clearly very
> > intelligent person, he also holds a master's degree in electrical
> > engineering from Georgia Tech and a PhD in computer science from Duke
> > University. His "crackpot" software is used by Sun, Apple, Symbian,
> > Google, AOL, Philips, DLink, and I don't know how many other
> > companies, not to mention countless open source projects such as
> > Mozilla, PHP, and now Python.
> 
> but is he a member of Mensa?


Now *there's* a group of crackpots.


Cliff
-- 



From timr at probo.com  Sun Sep  3 02:32:41 2006
From: timr at probo.com (Tim Roberts)
Date: Sun, 03 Sep 2006 06:32:41 GMT
Subject: python loops
References: <1157050085.120921.31840@h48g2000cwc.googlegroups.com>
	<JcGJg.21533$ED.7604@read2.cgocable.net>
	<1157051115.635459.215920@p79g2000cwp.googlegroups.com>
Message-ID: <intkf21gg4qbcjln2hqauavpuua5bda47t@4ax.com>

bearophileHUGS at lycos.com wrote:

>AlbaClause wrote:
>
>> for i in range(length):
>>         print i
>
>Or usually better:
>
>for ii in xrange(length):
>    ...

xrange used to be better.  As I understand it, that's no longer the case.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From Eric_Dexter at msn.com  Sat Sep 16 17:06:32 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 16 Sep 2006 14:06:32 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <450c51eb$0$21518$4d3efbfe@news.sover.net>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<450c51eb$0$21518$4d3efbfe@news.sover.net>
Message-ID: <1158440792.421483.118180@i42g2000cwa.googlegroups.com>

I would like to see more than one source..  Not that the documentation
is good or bad it is just that different people may come up with
different ways to explain the same thing and that is good in my view.
I would like to see the re module and the string module with as many
examples as humanly possible to overexplain it for me.  (I am currently
downloading a hole directory of re module stuff to try to overcome it)

http://www.dexrow.com




Leif K-Brooks wrote:
> nicolasfr at gmail.com wrote:
> > I am a bit disapointed with the current Python online documentation. I
> > have read many messages of people complaining about the documentation,
> > it's lack of examples and the use of complicated sentences that you
> > need to read 10 times before understanding what it means.
> >
> > That's why I have started a collaborative project to make a user
> > contributed Python documentation. The wiki is online here:
> > http://www.pythondocs.info
>
> I agree that Python's docs could use improvement, and I love the idea of
> using a Wiki for the purpose. But maybe MediaWiki would be a better
> choice of software? Dokuwiki's syntax looks foreign and a little bit
> intimidating to me, but Wikipedia has made pretty much everyone familiar
> with MediaWiki's syntax. Less syntax to learn lowers the cost of entry,
> which should lead to more contributors.



From kangtae49 at gmail.com  Mon Sep 11 00:13:47 2006
From: kangtae49 at gmail.com (kkt49)
Date: 10 Sep 2006 21:13:47 -0700
Subject: win32service (wxpython) -- i cannot install service
Message-ID: <1157948027.662154.233470@p79g2000cwp.googlegroups.com>

# vim: et sw=4 ts=8 sts

from wxPython.wx import *
import sys, os, time
import pywintypes
import win32serviceutil
import win32service
import win32event
import win32process

ID_ABOUT = 101
ID_EXIT = 102

# the max seconds we're allowed to spend backing off
BACKOFF_MAX = 300
# if the process runs successfully for more than BACKOFF_CLEAR_TIME
# seconds, we reset the backoff stats to their initial values
BACKOFF_CLEAR_TIME = 30
# the initial backoff interval (the amount of time we wait to restart
# a dead process)
BACKOFF_INITIAL_INTERVAL = 5

class Service(win32serviceutil.ServiceFramework):
    """ A class representing a Windows NT service that can manage an
    instance-home-based Zope/ZEO/ZRS processes """

    # The comment below is mostly irrelevant if you're running a
standalone
    # SchoolBell server, I think. -TEH

    # The PythonService model requires that an actual on-disk class
declaration
    # represent a single service.  Thus, the below definition of
start_cmd,
    # must be overridden in a subclass in a file within the instance
home for
    # each instance.  The below-defined start_cmd (and
_svc_display_name_
    # and _svc_name_) are just examples.

    # To use this script with SchoolTool, just replace "SchoolBell"
    # with "SchoolTool" in the variables below.
    # You'll also need to change 'Python24' to 'Python23' if that's
    # what you've got.  -TEH

    #cmd_str = os.environ["moin_service"]

    #_svc_name_ = r'moin_service'
    #_svc_display_name_ = r'moin_service'
    #start_cmd = r"c:\mmde\moin.exe"
    info = ['', '', '']

    def __init__(self):
        self._svc_name = info[0]
        self._svc_display_name_ = info[1]
        self.start_cmd = info[2]

        win32serviceutil.ServiceFramework.__init__(self)

        # Create an event which we will use to wait on.
        # The "service stop" request will set this event.
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
        self.redirectOutput()

    def __init__(self, args):
        self._svc_name = info[0]
        self._svc_display_name_ = info[1]
        self.start_cmd = info[2]

        win32serviceutil.ServiceFramework.__init__(self, args)
        # Create an event which we will use to wait on.
        # The "service stop" request will set this event.
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
        self.redirectOutput()

    def redirectOutput(self):
        #pass
        sys.stdout.close()
        sys.stderr.close()
        sys.stdout = NullOutput()
        sys.stderr = NullOutput()

    def SvcStop(self):
        # Before we do anything, tell the SCM we are starting the stop
process.
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)

        # TODO:  This TerminateProcess call doesn't make much sense:
it's
        # doing a hard kill _first_, never giving the process a chance
to
        # shut down cleanly.  Compare to current Zope2 service code,
which
        # uses Windows events to give the process a chance to shut down
        # cleanly, doing a hard kill only if that doesn't succeed.

        # stop the process if necessary
        try:
            win32process.TerminateProcess(self.hZope, 0)
        except pywintypes.error:
            # the process may already have been terminated
            pass
        # And set my event.
        win32event.SetEvent(self.hWaitStop)

    # SvcStop only gets triggered when the user explictly stops (or
restarts)
    # the service.  To shut the service down cleanly when Windows is
shutting
    # down, we also need to hook SvcShutdown.
    SvcShutdown = SvcStop

    def createProcess(self, cmd):
        return win32process.CreateProcess(
            None, cmd, None, None, 0, 0, None, None,
            win32process.STARTUPINFO())

    def SvcDoRun(self):
        # indicate to Zope that the process is daemon managed
(restartable)
        # os.environ['ZMANAGED'] = '1'

        # daemon behavior:  we want to to restart the process if it
        # dies, but if it dies too many times, we need to give up.

        # we use a simple backoff algorithm to determine whether
        # we should try to restart a dead process:  for each
        # time the process dies unexpectedly, we wait some number of
        # seconds to restart it, as determined by the backoff interval,
        # which doubles each time the process dies.  if we exceed
        # BACKOFF_MAX seconds in cumulative backoff time, we give up.
        # at any time if we successfully run the process for more thab
        # BACKOFF_CLEAR_TIME seconds, the backoff stats are reset.

        # the initial number of seconds between process start attempts
        backoff_interval = BACKOFF_INITIAL_INTERVAL
        # the cumulative backoff seconds counter
        backoff_cumulative = 0

        import servicemanager

        # log a service started message
        servicemanager.LogMsg(
            servicemanager.EVENTLOG_INFORMATION_TYPE,
            servicemanager.PYS_SERVICE_STARTED,
            (self._svc_name_, ' (%s)' % self._svc_display_name_))

        while 1:
            start_time = time.time()
            info = self.createProcess(self.start_cmd)
            self.hZope = info[0] # the pid
            if backoff_interval > BACKOFF_INITIAL_INTERVAL:
                # if we're in a backoff state, log a message about
                # starting a new process
                servicemanager.LogInfoMsg(
                    '%s (%s): recovering from died process, new process
'
                    'started' % (self._svc_name_,
self._svc_display_name_)
                    )
            rc = win32event.WaitForMultipleObjects(
                (self.hWaitStop, self.hZope), 0, win32event.INFINITE)
            if rc == win32event.WAIT_OBJECT_0:
                # user sent a stop service request
                self.SvcStop()
                break
            else:
                # user did not send a service stop request, but
                # the process died; this may be an error condition
                status = win32process.GetExitCodeProcess(self.hZope)
                if status == 0:
                    # the user shut the process down from the web
                    # interface (or it otherwise exited cleanly)
                    break
                else:
                    # this was an abormal shutdown.  if we can, we want
to
                    # restart the process but if it seems hopeless,
                    # don't restart an infinite number of times.
                    if backoff_cumulative > BACKOFF_MAX:
                        # it's hopeless
                        servicemanager.LogErrorMsg(
                          '%s (%s): process could not be restarted due
to max '
                          'restart attempts exceeded' % (
                            self._svc_display_name_, self._svc_name_
                          ))
                        self.SvcStop()
                        break
                    servicemanager.LogWarningMsg(
                       '%s (%s): process died unexpectedly.  Will
attempt '
                       'restart after %s seconds.' % (
                            self._svc_name_, self._svc_display_name_,
                            backoff_interval
                            )
                       )
                    # if BACKOFF_CLEAR_TIME seconds have elapsed since
we last
                    # started the process, reset the backoff interval
                    # and the cumulative backoff time to their original
                    # states
                    if time.time() - start_time > BACKOFF_CLEAR_TIME:
                        backoff_interval = BACKOFF_INITIAL_INTERVAL
                        backoff_cumulative = 0
                    # we sleep for the backoff interval.  since this is
async
                    # code, it would be better done by sending and
                    # catching a timed event (a service
                    # stop request will need to wait for us to stop
sleeping),
                    # but this works well enough for me.
                    time.sleep(backoff_interval)
                    # update backoff_cumulative with the time we spent
                    # backing off.
                    backoff_cumulative = backoff_cumulative +
backoff_interval
                    # bump the backoff interval up by 2* the last
interval
                    backoff_interval = backoff_interval * 2

                    # loop and try to restart the process

        # log a service stopped message
        servicemanager.LogMsg(
            servicemanager.EVENTLOG_INFORMATION_TYPE,
            servicemanager.PYS_SERVICE_STOPPED,
            (self._svc_name_, ' (%s) ' % self._svc_display_name_))

class NullOutput:
    """A stdout / stderr replacement that discards everything."""

    def noop(self, *args, **kw):
        pass

    write = writelines = close = seek = flush = truncate = noop

    def __iter__(self):
        return self

    def next(self):
        raise StopIteration

    def isatty(self):
        return False

    def tell(self):
        return 0

    def read(self, *args, **kw):
        return ''

    readline = read

    def readlines(self, *args, **kw):
        return []


class MyFrame(wxFrame):
    def __init__(self, parent, ID, title):
        wxFrame.__init__(self, parent, ID, title, wxDefaultPosition,
wxSize(200, 150))
        self.CreateStatusBar()
        self.SetStatusText("This is the statusbar")

        menu = wxMenu()
        menu.Append(ID_ABOUT, "&About", "More information about this
program")
        menu.AppendSeparator()
        menu.Append(ID_EXIT, "E&xit", "Terminate the program")

        menuBar = wxMenuBar()
        menuBar.Append(menu, "&File");

        self.SetMenuBar(menuBar)

        # ????
        servicenameText = wxStaticText(self, -1, "Service Name")
        self.servicenameCtrl = wxTextCtrl(self, -1, size=(200, -1))
        # ???? ??? ??
        cmdText = wxStaticText(self, -1, "Service command")
        self.cmdCtrl = wxTextCtrl(self, -1, size=(200, -1))
        # ?? ??
        installButton = wxButton(self, -1, label="Install", size=(80,
-1))
        removeButton = wxButton(self, -1, label="Remove", size=(80,
-1))
        startButton = wxButton(self, -1, label="Start", size=(80, -1))
        stopButton = wxButton(self, -1, label="Stop", size=(80, -1))
        installButton.Bind(EVT_BUTTON, self.onInstallButtonClick)
        removeButton.Bind(EVT_BUTTON, self.onRemoveButtonClick)
        startButton.Bind(EVT_BUTTON, self.onStartButtonClick)
        stopButton.Bind(EVT_BUTTON, self.onStopButtonClick)

        # Sizer ??
        sizer = wxFlexGridSizer(rows=2, cols=2, hgap=10, vgap=5)
        sizer.Add(servicenameText) # (0, 0)
        sizer.Add(self.servicenameCtrl) # (0, 1)
        sizer.Add(cmdText) # (1, 0)
        sizer.Add(self.cmdCtrl) # (1, 1)
        sizer.Add(installButton) # (2, 0)
        sizer.Add(removeButton) # (2, 1)
        sizer.Add(startButton) # (3, 0)
        sizer.Add(stopButton) # (3, 1)

        border = wxBoxSizer()
        border.Add(sizer, 0, wxALL, 10)
        self.SetSizerAndFit(border)
        self.Fit()

    def onInstallButtonClick(self, event):
        Service.info[0] = self.servicenameCtrl.GetValue()
        Service.info[1] = self.servicenameCtrl.GetValue()
        Service.info[2] = self.cmdCtrl.GetValue()

        #Service._svc_name_ = self.servicenameCtrl.GetValue()
        #Service._svc_display_name_ = self.servicenameCtrl.GetValue()
        #Service.start_cmd = self.cmdCtrl.GetValue()

        #win32serviceutil.HandleCommandLine(Service)
        win32serviceutil.InstallService(
                win32serviceutil.GetServiceClassString(Service),
                self.servicenameCtrl.GetValue(),
                self.servicenameCtrl.GetValue()
                )


    def onRemoveButtonClick(self, event):
        win32serviceutil.RemoveService(self.servicenameCtrl.GetValue())

    def onStartButtonClick(self, event):
        win32serviceutil.StartService(self.servicenameCtrl.GetValue())

    def onStopButtonClick(self, event):
        win32serviceutil.StopService(self.servicenameCtrl.GetValue())

    #def onOkButtonClick(self, event):
    #    Service._svc_name_ = self.servicenameCtrl.GetValue()
    #    Service._svc_display_name_ = self.servicenameCtrl.GetValue()
    #    Service.start_cmd = (self.cmdCtrl.GetValue())
    #    sys.argv.append(self.argsCtrl.GetValue())
    #    win32serviceutil.HandleCommandLine(Service)


class MyApp(wxApp):
    def OnInit(self):
        frame = MyFrame(NULL, -1, "Hello from wxPython")
        frame.servicenameCtrl.SetValue(r"moin_service")
        frame.cmdCtrl.SetValue(r"c:\mmde\moin.exe")
        #frame.argsCtrl.SetValue("stop")
        Service.info[0] =
frame.servicenameCtrl.SetValue(r"moin_service")
        Service.info[1] =
frame.servicenameCtrl.SetValue(r"moin_service")
        Service.info[2] = frame.cmdCtrl.SetValue(r"c:\mmde\moin.exe")


        frame.Show(true)
        self.SetTopWindow(frame)
        return true

if __name__ == '__main__':
    app = MyApp(0)
    app.MainLoop()

----------------------------
start stop remove ==> ok
I cann't install service

help!!!



From kay.schluehr at gmx.net  Sun Sep 17 14:59:38 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 17 Sep 2006 11:59:38 -0700
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <1158519578.927195.195090@e3g2000cwe.googlegroups.com>

nicolasfr at gmail.com wrote:
> Hi,
>
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
>
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
>
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.
>
> Regards,
>
> Nicolas.
> -----
> http://www.pythondocs.info

Personally, I never found the Python docs particular bad. It is
rewarding to write good documentation because documentation has
different aspects i.e. introductory/tutorial, exhaustive/manual and
design documentation aspects. Not to mention cookbook recipes.

I also observe that the discussion about Python docs is very tool
centered and my question to all the people who believe to improve the
Python docs by converting old tuturials into Wikis is that: what are
the precise requirements? Will an internet connection soon be necessary
to know how the sys module works?  Are there any thoughts about
integrating 3rd party module/package documentation with the docs of the
stdlib / tutorial / language ref etc.so that they finally find their
logical place in the system ? Are there any intentions to create an
informational PEP regarding documentation in any forseeable future or
shall documentation projects continue to start in the wild?

So far I've not seen a documentation project ( besides the "official"
one of course ) that provided qualified criticism and didn't suffer
from a second system syndrome.



From robin at reportlab.com  Wed Sep 13 05:41:59 2006
From: robin at reportlab.com (Robin Becker)
Date: Wed, 13 Sep 2006 10:41:59 +0100
Subject: Help me use my Dual Core CPU!
In-Reply-To: <1158132381.716706.243040@e63g2000cwd.googlegroups.com>
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>	<7x8xkol0n9.fsf@ruckus.brouhaha.com>
	<1158132381.716706.243040@e63g2000cwd.googlegroups.com>
Message-ID: <4507D267.8050709@chamonix.reportlab.co.uk>

Simon Wittber wrote:
> Paul Rubin wrote:
>> "Simon Wittber" <simonwittber at gmail.com> writes:
>>> I've just noticed that os.fork is not available on Win32. Ouch.
>> Use the subprocess module.
> 
> I can't see how subprocess.Popen can replace a fork. Using a manually
> started process is not really viable, as it does not automatically
> share pre-built (read-only) data between the processes. If it can, I'd
> really like to know how...
> 
> Yikes. This is a bummer. The conclusion seems to be, I cannot use any
> common cross platform, true concurrency strategies in my games. On top
> of that, I can't really use any form of concurrency on Win32.
> 
> Lets hope we get some super fast SMP friendly backends for PyPy sooner
> rather than later!
> 
> -Sw.
> 
Nobody seems to have mentioned POSH http://poshmodule.sourceforge.net
which used almost to work. I assume it's busted for later pythons and the author 
says it's just a demonstration.

Anandtech demoed an 8 core mac pro machine and were unable to "max out the 
cpus". Python needs some kind of multi cpu magic pretty quickly or we'll all end 
up using erlang :)

As for subprocess I don't see it as much use unless we can at least determine 
the number of cpu's and also set the cpu affinity easy with occam maybe not in 
python.
-- 
Robin Becker



From gry at ll.mit.edu  Fri Sep 15 22:17:25 2006
From: gry at ll.mit.edu (gry at ll.mit.edu)
Date: 15 Sep 2006 19:17:25 -0700
Subject: generators/iterators: filtered random choice
Message-ID: <1158373045.896571.167880@h48g2000cwc.googlegroups.com>

I want a function (or callable something) that returns a random
word meeting a criterion.  I can do it like:

def random_richer_word(word):
    '''find a word having a superset of the letters of "word"'''
    if len(set(word) == 26): raise WordTooRichException, word
    while True:
        w = random.choice(words)
        if set(w) - set(word):  # w has letters not present in word
            return w

This seems like a perfect application for generators or iterators,
but I can't quite see how.  Any suggestions?



From enleverlesX.XmcX at XmclaveauX.com  Tue Sep  5 17:08:26 2006
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI)
Date: Tue, 5 Sep 2006 23:08:26 +0200
Subject: [ANN] IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <44fde75c$0$5068$ba4acef3@news.orange.fr>

F?licitations.  Et chapeau pour votre travail.

Michel Claveau





From sjdevnull at yahoo.com  Wed Sep  6 03:09:19 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 6 Sep 2006 00:09:19 -0700
Subject: threading support in python
In-Reply-To: <7xbqptdeeo.fsf@ruckus.brouhaha.com>
References: <4klub9Fcqv5kU1@individual.net>
	<1155932094.617287.84980@i3g2000cwc.googlegroups.com>
	<1155933754.114724.250180@i3g2000cwc.googlegroups.com>
	<gTqFg.16305$o27.3834@newssvr21.news.prodigy.com>
	<4knq9hFctlsuU1@individual.net>
	<1156001501.741149.162810@h48g2000cwc.googlegroups.com>
	<PsJFg.66833$u11.21481@tornado.ohiordc.rr.com>
	<1157214620.847062.68090@b28g2000cwb.googlegroups.com>
	<1157409631.751524.99560@b28g2000cwb.googlegroups.com>
	<1157469825.184895.176080@d34g2000cwd.googlegroups.com>
	<7xbqptdeeo.fsf@ruckus.brouhaha.com>
Message-ID: <1157526559.277945.58530@m73g2000cwd.googlegroups.com>

Paul Rubin wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > Having memory protection is superior to not having it--OS designers
> > spent years implementing it, why would you toss out a fair chunk of it?
> >  Being explicit about what you're sharing is generally better than not.
>
> Part of the win of programming in Python instead of C is having the
> language do memory management for you--no more null pointers
> dereferences or malloc/free errors.  Using shared memory puts all that
> squarely back in your lap.

Huh?  Why couldn't you use garbage collection with objects allocated in
shm?  The worst theoretical case is about the same programatically as
having garbage collected objects in a multithreaded program.

Python doesn't actually support that as of yet, but it could.  In the
interim, if the memory you're sharing is array-like then you can
already take full advantage of multiprocess solutions in Python.



From horpner at yahoo.com  Fri Sep 22 15:49:39 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 22 Sep 2006 21:49:39 +0200
Subject: returning None instead of value: how to fix?
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
Message-ID: <slrneh8fk0.1c8.horpner@FIAD06.norwich.edu>

On 2006-09-22, sam <python.sam at googlemail.com> wrote:
> i am starting to experiment with recursion, and decided to
> write a fairly trivial little program which took a float as
> input, then called a function to halve it recursively until it
> was less than 1:
>
> ____________________________________________________________________
> import recursive_halve_module
>
> raw_value = raw_input('please enter the number you would like to halve:
> ')
> value = float(raw_value)
>
> final_value = recursive_halve_module.recursive_halve(value)
>
> print final_value
>
> raw_input('hit enter to close: ')
> _____________________________________________________________________
>
> def recursive_halve(value):
>
>     if value < 1:
> 	print value
> 	return value
>     else:
>     	value = value/2
>     	print value
>     	if value < 1:
> 	    return value
>     	else:
> 	    recursive_halve(value)

Your immediate bug is that you're missing a return statement:

            return recursive_halve(value)

But your recursive routine is overcomplicated with too many base
cases, and you haven't written it functionally. There's no need
to modify value directly in a functional procedure.

Here's another version.

def recursive_halve(value):
  if value < 1.0:
    return value
  else:
    return recursive_halve(value / 2.0)

Now imagine the call-stack when called with value 45.0 (using the
substitution model):

recursive_halve(45.0) -->
  return recursive_halve(22.5) -->
    return recursive_halve(11.25) -->
      return recursive_halve(5.625) -->
        return recursive_halve(2.8125) -->
	  return recursive_halve(1.40625) -->
	    return recursive_halve(0.703125) -->
	      return 0.703125
	    
-- 
Neil Cerutti
Life is indeed precious, and I believe the death penalty helps
affirm this fact. --Edward Koch


From 71david at libero.it  Thu Sep 14 06:21:26 2006
From: 71david at libero.it (David)
Date: Thu, 14 Sep 2006 12:21:26 +0200
Subject: How can I get the function's caller?
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
	<mailman.4.1158129274.10491.python-list@python.org>
Message-ID: <92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>

Il Wed, 13 Sep 2006 07:34:45 +0100, Steve Holden ha scritto:

> What do you need this name for, just as a materr of interest? There are 
> ways of manipulating the stack frames, but they'll be slow and possibly 
> unreliable.
I am writing a big (for me) program and it would be helpful to have a dummy
function like this:

def function_A_subfunction_B(self, ....)
	dummy()

that display a standard message like this:

"Dummy: 'function_A_subfunction_B' in module 'module' is not defined yet"

regards
David


From fredrik at pythonware.com  Thu Sep 28 11:32:06 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 17:32:06 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <624934630609280823o322f0c17qc324c03ca089fbeb@mail.gmail.com>
References: <451b2c0b@news.bezeqint.net>	<1159404316.140577.68700@b28g2000cwb.googlegroups.com>	<efgld3$sc3$1@sea.gmane.org>
	<624934630609280823o322f0c17qc324c03ca089fbeb@mail.gmail.com>
Message-ID: <efgptl$fvg$1@sea.gmane.org>

Ramon Diaz-Uriarte wrote:

> Going back to the original question, a related question: does anybody
> know why there are so few books on data structures and algorithms that
> use Python?

Probably because Python has "better than textbook" implementations of 
core structures, and "better than textbook" implementations of many core 
algorithms, so lots of things can be done more efficiently by combining 
existing structures and algorithms than by using "textbook" algorithms.

</F>



From g.brandl-nospam at gmx.net  Sat Sep  2 04:32:19 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sat, 02 Sep 2006 10:32:19 +0200
Subject: IndentationError: expected an indented block
In-Reply-To: <1157185599.404098.70620@p79g2000cwp.googlegroups.com>
References: <1157170194.270363.67430@h48g2000cwc.googlegroups.com>
	<mailman.10280.1157184700.27775.python-list@python.org>
	<1157185599.404098.70620@p79g2000cwp.googlegroups.com>
Message-ID: <edbfij$pqk$1@news.albasani.net>

casioculture at gmail.com wrote:
> Hendrik van Rooyen wrote:
>> <casioculture at gmail.com> Wrote:
>>
>>
>> |
>> | Haha. How can I fix this!
>> |
>> |
>> |
>>
>> Use either tabs, or spaces, but not both....
>>
>> - Hendrik
> 
> Haha. I know. I just find it silly that a language insists on
> indentation. I'd long known it but just was reminded of it when I
> messed a little with the interpreter.

Let me tell you that we've had far better trolls.

Georg


From steve at holdenweb.com  Tue Sep 26 09:15:45 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 09:15:45 -0400
Subject: QuoteSQL
In-Reply-To: <efajs7$hbo$1@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<mailman.560.1159188345.10491.python-list@python.org>	<ef9nmi$snj$2@lust.ihug.co.nz>	<mailman.637.1159253927.10491.python-list@python.org>
	<efajs7$hbo$1@lust.ihug.co.nz>
Message-ID: <efb94f$6n3$4@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.637.1159253927.10491.python-list at python.org>, Steve
> Holden wrote:
> 
> 
>>Lawrence D'Oliveiro wrote:
>>
>>>In message <mailman.560.1159188345.10491.python-list at python.org>, Steve
>>>Holden wrote:
>>>
>>>
>>>
>>>>When you use the DB API correctly and paramterise your queries you still
>>>>need to quote wildcards in search arguments, but you absolutely
>>>>shouldn't quote the other SQL specials.
>>>>
>>>>That's what parameterised queries are for on the first place...
>>>
>>>
>>>So you're suggesting I quote the wildcards, then rely on autoquoted
>>>parameters to handle the rest? Unfortunately, that's stupid mistake
>>>number 2.
>>
>>Ah, so your quoting function will deduce the context in which arguments
>>intended for parameter substitution in the query will be used? Or are
>>you suggesting that it's unwise to rely on autoquoted parameters?
> 
> 
> No, I'm saying it's _incorrect_ to use the existing autoquoting mechanism in
> combination with a separate function that escapes the wildcards. I
> previously described the two stupid mistakes that can arise from having a
> separate function for doing just the wildcard quoting: this is the second
> one.
> 
Sadly your assertions alone fail to convince. Perhaps you could provide 
a concrete example?
> 
>>That could have a serious impact on the efficiency of some repeated
>>queries. 
> 
> 
> Correctness comes before efficiency. It's no point doing it quickly if
> you're doing it wrong.

Indeed not. But there's no point being right if you can't explain why.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From johnjsal at NOSPAMgmail.com  Mon Sep 25 11:56:08 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Mon, 25 Sep 2006 15:56:08 GMT
Subject: Talking to marketing people about Python
In-Reply-To: <roy-D4C452.19080324092006@reader2.panix.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <s_SRg.21$1n3.207@news.tufts.edu>

Roy Smith wrote:

> Can anybody suggest some good material I can give to him which will help 
> explain what Python is and why it's a good thing, in a way that a 
> marketing/product management person will understand?

You might want to take a look at Chapter 1 of "Programming Python" (3rd 
edition, unless it's not changed much from the 2nd). It's even described 
in the Preface as being a general introduction that can be used to 
explain the language to management and non-programmers.


From antoine at vo.lu  Tue Sep 26 06:13:34 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Tue, 26 Sep 2006 12:13:34 +0200
Subject: ruby %w equivalent
In-Reply-To: <4518fba6$1@news.vo.lu>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
	<MPG.1f824ba4ccb5f49989687@news.individual.de>
	<4518fba6$1@news.vo.lu>
Message-ID: <4518fd44$1@news.vo.lu>

Antoine De Groote wrote:
> Thorsten Kampe wrote:
>> * John Machin (24 Sep 2006 15:32:20 -0700)
>>> Antoine De Groote wrote:
>>>> is there a python equivalent for the ruby %w operator?
>>>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>>>
>>> | >>> "a b c".split()
>>> | ['a', 'b', 'c']
>>>
>>> ... appears to match your single example.
>>
>> Something wrong with "list('abc')"? Or is it too simple?!
>>
>> Thorsten
> 
> As far as I can tell this works for single characters only. You're not 
> able to split words, as in "one two three".split().
> 
> Regards,
> antoine

And this is what Georg Brandl already posted. Sorry!


From jaysherby at gmail.com  Mon Sep 18 18:21:35 2006
From: jaysherby at gmail.com (Jay)
Date: 18 Sep 2006 15:21:35 -0700
Subject: gnome module
Message-ID: <1158618094.019324.136190@h48g2000cwc.googlegroups.com>

Am I correct in assuming that I can use the gnome module to minimize
all windows (aka show desktop)?  If so, how?



From JohnRoth1 at jhrothjr.com  Sat Sep 23 18:33:07 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 23 Sep 2006 15:33:07 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <1158942134.691147.308530@i42g2000cwa.googlegroups.com>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
Message-ID: <1159050787.177322.183200@h48g2000cwc.googlegroups.com>


Saizan wrote:
> John Roth wrote:
>
> > The not operator and the bool() builtin produce
> > boolean results. Since bool is a subclass of int,
> > all the integer operations will remain integer
> > operations. This was done for backwards
> > compatability, and is unlikely to change in the 2.x
> > series.
>
> Ok, shame on me, I completely overlooked "not" and it surprises myself
> because it's not like I haven't used it, I just didn't see "not" as an
> operator, maybe because i can't find a __not__ method in bool class.
> (Is it hidden somewhere or is computed in some other way?)

None of the boolean operators have magic methods.
PEP 335 addresses this issue, but it's been sitting
there for over two years with no action. It's probably
lost any traction it ever had.

John Roth



From michele.petrazzoDELETE at DELETEunipex.it  Fri Sep 29 08:53:54 2006
From: michele.petrazzoDELETE at DELETEunipex.it (Michele Petrazzo)
Date: Fri, 29 Sep 2006 12:53:54 GMT
Subject: Execute external code and get return value
In-Reply-To: <ze8Tg.128326$_J1.881759@twister2.libero.it>
References: <ze8Tg.128326$_J1.881759@twister2.libero.it>
Message-ID: <CH8Tg.128090$zy5.1783784@twister1.libero.it>

Michele Petrazzo wrote:

Auto reply:

> I find this: http://tinyurl.com/nwbpk
> 

Following this link, here is my solution:


code = """
def funct2Call():
  return "It work!"

object.method(funct2Call)
"""

class Object(object):
     def method(self, value):
         self._callable = value
     def __call__(self):
         return self._callable()

# populate the namespace
namespace = {
     "object": Object()
     }

# execute the code
exec code in namespace

namespace["object"]()

Michele


From jan.dries at dcube-resource.be  Thu Sep 14 04:52:30 2006
From: jan.dries at dcube-resource.be (Jan Dries)
Date: Thu, 14 Sep 2006 10:52:30 +0200
Subject: lxml Windows binaries
Message-ID: <4509184E.60802@dcube-resource.be>

I'm trying to find Windows binaries for lxml. The cheeseshop is supposed 
to have such binaries, but I can't find them.
Does anyone know where I might find such binaries?

Thanks,
Jan



From metaperl.etc at gmail.com  Mon Sep  4 18:26:34 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 4 Sep 2006 15:26:34 -0700
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
Message-ID: <1157408794.258685.260190@p79g2000cwp.googlegroups.com>

One other thing: the mac os x built at python.org
(http://www.python.org/download/)

does not state whether it is a Framework build or not. I'm guessing it
isn't.



From gillespie.amanda at gmail.com  Fri Sep  1 06:26:12 2006
From: gillespie.amanda at gmail.com (gillespie.amanda at gmail.com)
Date: 1 Sep 2006 03:26:12 -0700
Subject: Adding sender name to email
Message-ID: <1157106372.558227.236380@b28g2000cwb.googlegroups.com>

How do I add a Sender name to the emails sent by the following script:

def createhtmlmail (html, text, subject):
      	"""Create a mime-message that will render HTML in popular
	   MUAs, text in better ones"""
	import MimeWriter
	import mimetools
	import cStringIO

	out = cStringIO.StringIO() # output buffer for our message
	htmlin = cStringIO.StringIO(html)
 	txtin = cStringIO.StringIO(text)

	writer = MimeWriter.MimeWriter(out)
	# set up some basic headers... we put subject here
	# because smtplib.sendmail expects it to be in the
	# message body
	#
	writer.addheader("Subject", subject)
	writer.addheader("MIME-Version", "1.0")
	#
	# start the multipart section of the message
	# multipart/alternative seems to work better
	# on some MUAs than multipart/mixed
	#
	writer.startmultipartbody("alternative")
	writer.flushheaders()
	#
	# the plain text section
	#
	subpart = writer.nextpart()
	subpart.addheader("Content-Transfer-Encoding", "quoted-printable")
	pout = subpart.startbody("text/plain", [("charset", 'us-ascii')])
	mimetools.encode(txtin, pout, 'quoted-printable')
	txtin.close()
	#
	# start the html subpart of the message
	#
	subpart = writer.nextpart()
	subpart.addheader("Content-Transfer-Encoding", "quoted-printable")
	#
	# returns us a file-ish object we can write to
	#
	pout = subpart.startbody("text/html", [("charset", 'us-ascii')])
	mimetools.encode(htmlin, pout, 'quoted-printable')
	htmlin.close()
	#
	# Now that we're done, close our writer and
	# return the message body
	#
	writer.lastpart()
	msg = out.getvalue()
	out.close()
	return msg

if __name__=="__main__":
	import smtplib
	from time import *

	f = open("mssg.html", 'r')
	html = f.read()
	f.close()
	f = open("mssg.txt", 'r')
	text = f.read()
	f.close()
	subject = "subject)"

        f = open("temp.txt", 'r')
        RECIPIENTS = []
        for line in f:
            RECIPIENTS.append(line.strip())
        f.close()
        for i in RECIPIENTS:
            if len(i) == 0:
                RECIPIENTS.remove(i)
        print "Number of recipients: ", len(RECIPIENTS)

        SENDER = 'mail at mail.com'
        print "Generating message..."
	mssg = createhtmlmail(html, text, subject)
	print "Opening session"
	session = smtplib.SMTP("localhost")
	print "Sending email"
	offset = 0
        blocksize = 20 # to send emails in blocks of 20, so I don't
bomb out my server
        while offset*blocksize < len(RECIPIENTS):
            print "Sending message ", offset*blocksize, " - ",
(offset+1)*blocksize, "of ", len(RECIPIENTS), "..."
            smtpresult =
session.sendmail(SENDER,RECIPIENTS[offset*blocksize:(offset+1)*blocksize],mssg)
            sleep(30)
            offset += 1
##      smtpresult = session.sendmail(SENDER, RECIPIENTS, mssg)

        if smtpresult:
            errstr = ""
            for recip in smtpresult.keys():
                errstr = """Could not delivery mail to: %s
Server said: %s
%s
%s""" % (recip, smtpresult[recip][0], smtpresult[recip][1], errstr)
            raise smtplib.SMTPException, errstr
        session.quit()



From steve at holdenweb.com  Mon Sep 25 01:12:35 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 01:12:35 -0400
Subject: String Pattern Matching: regex and Python regex documentation
In-Reply-To: <1159154130.615032.194810@i3g2000cwc.googlegroups.com>
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>	<45143567.2000903@lazaridis.com>
	<YC1Rg.1266$8O1.99@trnddc04>
	<1159154130.615032.194810@i3g2000cwc.googlegroups.com>
Message-ID: <ef7oei$qt6$1@sea.gmane.org>

Xah Lee wrote:
> Xah Lee wrote:
> ? the Python regex documentation is available at:
>  http://xahlee.org/perl-python/python_re-write/lib/module-re.html ...?
> 
> J?rgen Exner wrote:
> ?Yeah, sure, and the Perl regex documentation is available at 'perldoc
> perlre'.  So what? Is that anything new or surprising??
> 
> It is of interest and new, because it is a rewrite of Python's
> documentation. And it is of interest to Perlers, because Perl and
> Python uses the same regex syntax.
> 
> The purpose of this rewrite, is to fix Python's lousy documentation,
> and to demonstrate a style of technical writing, where precision and
> clarity is the prime directive.
> 
> It demonstrates a style of documentation, where the philosophy is
> task-oriented and uses examples sans misgivings.  (in this aspect, it
> is similar to the style of Perl's official documentation.)
> 
> Further, the exposition style focuses on the manifestation of the
> language elements, as a piece of mathematics, a style often found in
> functional language's documentations. It is opposed to, treating the
> language as a state machine or compiler engine, which are often
> necessarily the approach of imperative languages's documentations.
> 
> This project was undertaken as a response to a challenge put forth to
> me with a $100 reward, on 2005-04-12 on comp.lang.python newsgroup. I
> never received the due reward.
> 
Your reading skills must be terrible. You never received the reward 
because it never became due. I offered you $100 if (I believe) five 
regular readers of c.l.py wrote me to say your version was an 
improvement on the original documentation.

So far (it's now been over a year since your publication, IIRC) not one 
single person has written to me. So while your version of the docs may 
have some merit, it certainly doesn't fulfil the advertised requirements 
for the reward. Which therefore isn't due.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From 71david at libero.it  Tue Sep 12 01:55:57 2006
From: 71david at libero.it (David)
Date: Tue, 12 Sep 2006 07:55:57 +0200
Subject: wxPython, how to autoresize a frame?
References: <108kqfnsxedqr.19vxlomc0xszb.dlg@40tude.net>
Message-ID: <2fg2l3tu5n1z.5sofafbrs8ru$.dlg@40tude.net>

Il Sun, 10 Sep 2006 19:15:40 +0200, David ha scritto:

> The problem is that, when sizer2 containig hidden controls collapses to
> zero dimensions, the panel resizes, but sizer1 and sizer0 don't!
> Consequently the frame does not want to autoresize.
> 
> You con dowload the code here:
> http://www.box.net/public/evfxs7cp5j
> 
> Someone con help me?
Best help came from mysef: the problem was in .SetSizeHints() statement
that prevented resizind of objects.

D.

-- 
R: Perche' incasina l'ordine con cui la gente normalmente legge un
messaggio
D: Perche' quotare sotto da' cosi' fastidio?
R: Quotare sotto.
D: Qual e' la cosa piu' seccante su usenet e in e-mail?


From sjdevnull at yahoo.com  Wed Sep  6 14:22:18 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 6 Sep 2006 11:22:18 -0700
Subject: threading support in python
In-Reply-To: <7xr6ypjr0r.fsf@ruckus.brouhaha.com>
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
	<1157526371.291426.191730@m79g2000cwm.googlegroups.com>
	<mailman.63.1157529309.5279.python-list@python.org>
	<1157533399.158633.124030@p79g2000cwp.googlegroups.com>
	<7xr6ypjr0r.fsf@ruckus.brouhaha.com>
Message-ID: <1157566938.399058.242620@e3g2000cwe.googlegroups.com>

Paul Rubin wrote:
> "sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > (1) I think is here to stay, if you're going to tell programmers that
> > their destructors can't make program-visible changes (e.g. closing the
> > database connection when a dbconn is destroyed), that's a _huge_ change
> > from current practice that needs serious debate.
>
> We had that debate already (PEP 343).  Yes, there is some sloppy
> current practice by CPython users that relies on the GC to close the
> db conn.

This point is unrelated to with or ref-counting.  Even the standard
library will close file objects when they are GC'd.  If this is not
acceptable, it's a major change; that's why I say (1) is here to stay.
But I think we're misunderstanding each other somehow on this point (I
don't think you're saying that the standard library is sloppily coded
in this regard), I just don't know how.



From asma61 at dsl.pipex.com  Sat Sep 30 20:06:10 2006
From: asma61 at dsl.pipex.com (DaveM)
Date: Sun, 01 Oct 2006 01:06:10 +0100
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159271339.775493.132180@i3g2000cwc.googlegroups.com>
	<mailman.669.1159272062.10491.python-list@python.org>
	<pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>
	<roy-E62177.09172727092006@reader2.panix.com>
	<pan.2006.09.27.14.20.10.789105@REMOVE.THIS.cybersource.com.au>
Message-ID: <n21uh2dme0td34bp0qg1fkc71fo9bbhivc@4ax.com>

On Thu, 28 Sep 2006 00:20:11 +1000, Steven D'Aprano
<steve at REMOVE.THIS.cybersource.com.au> wrote:

>The
>dictionary definition of countless is "too many to count" (Pocket Oxford),
>which I suppose could be 11 for some people if they didn't take their
>shoes and socks off. Mathematically, any finite integer is able to be
>counted, so "countless" is equivalent to "infinite in number".

While we're being pedantic, there are many more ways to be "too many to
count" than infinity. Counting is a physical process that depends as much on
the counter and circumstances of counting as on the number to be counted.

DaveM


From sbellon at sbellon.de  Wed Sep 20 06:08:53 2006
From: sbellon at sbellon.de (Stefan Bellon)
Date: Wed, 20 Sep 2006 12:08:53 +0200
Subject: Embedding Python and command history
Message-ID: <20060920120853.5c63db89@cube.tz.axivion.com>

Hi all!

I'm embedding Python in my own C (or rather Ada, but via the C
interface) program. Everything runs fine. But I have a small question
regarding command history. Let's take the simplest example:

#include <Python.h>

int main(void)
{
  Py_Initialize();
  PyRun_InteractiveLoop(stdin, "<stdin>");
  Py_Finalize();
}

When I compile this an run it, then I get control characters printed
when I press cursor keys. When I start the "real" python interpreter,
then I have command history via cursor keys.

How can I make use of command history when embedded Python via
PyRun_InteractiveLoop?

Thanks a lot for your hints in advance!

-- 
Stefan Bellon


From vatamane at gmail.com  Sun Sep 24 01:29:10 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 23 Sep 2006 22:29:10 -0700
Subject: How about assignment to True and False...
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<1159050787.177322.183200@h48g2000cwc.googlegroups.com>
Message-ID: <1159075750.076224.146770@i3g2000cwc.googlegroups.com>


Perhaps it will be addressed in 3.0...

I hope True and False could become keywords eventually. That would stop
silliness like:
---------------------
In [1]: False=True

In [2]: not False
Out[2]: False

In [3]: False
Out[3]: True
---------------------

Nick V.


John Roth wrote:
> Saizan wrote:
> > John Roth wrote:
> >
> > > The not operator and the bool() builtin produce
> > > boolean results. Since bool is a subclass of int,
> > > all the integer operations will remain integer
> > > operations. This was done for backwards
> > > compatability, and is unlikely to change in the 2.x
> > > series.
> >
> > Ok, shame on me, I completely overlooked "not" and it surprises myself
> > because it's not like I haven't used it, I just didn't see "not" as an
> > operator, maybe because i can't find a __not__ method in bool class.
> > (Is it hidden somewhere or is computed in some other way?)
>
> None of the boolean operators have magic methods.
> PEP 335 addresses this issue, but it's been sitting
> there for over two years with no action. It's probably
> lost any traction it ever had.
> 
> John Roth



From tim.golden at viacom-outdoor.co.uk  Wed Sep 27 04:06:43 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 27 Sep 2006 09:06:43 +0100
Subject: Starting Win32 Service
In-Reply-To: <1159331968.764830.78640@b28g2000cwb.googlegroups.com>
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B4AD@vogbs009.gb.vo.local>

[placid]
| Using Tim Golden's wmi module you can get the service names
| 
| import wmi
| c = wmi.WMI ()
| stopped_services = c.Win32_Service (StartMode="Auto", State="Stopped")
| if stopped_services:
|   for s in stopped_services:
|     print s.Caption, "service is not running"
| else:
|   print "No auto services stopped"
|
| but how do i start services that are stopped?

<code>
import wmi
c = wmi.WMI ()
for method in c.Win32_Service._methods:
  print method

#
#... includes StartService
#

print c.Win32_Service.StartService

# <function StartService () => (ReturnValue)>

#
# Therefore, to start all non-running auto services (!)
#
for service in c.Win32_Service (StartMode="Auto", State="Stopped"):
  print service.Caption
  service.StartService ()

</code>

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
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From bignose+hates-spam at benfinney.id.au  Thu Sep 21 21:06:31 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 22 Sep 2006 11:06:31 +1000
Subject: Don't use regular expressions to "validate" email addresses (was: I
	need some help with a regexp please)
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
Message-ID: <87lkoczp48.fsf_-_@benfinney.id.au>

"John Machin" <sjmachin at lexicon.net> writes:

> A little more is unfortunately not enough. The best advice you got was
> to use an existing e-mail address validator. The definition of a valid
> e-mail address is complicated. You may care to check out "Mastering
> Regular Expressions" by Jeffery Friedl. In the first edition, at least
> (I haven't looked at the 2nd), he works through assembling a 4700+ byte
> regex for validating e-mail addresses. Yes, that's 4KB.  It's the best
> advertisement for *not* using regexes for a task like that that I've
> ever seen.

The best advice I've seen when people ask "How do I validate whether
an email address is valid?" was "Try sending mail to it".

It's both Pythonic, and truly the best way. If you actually want to
confirm, don't try to validate it statically; *use* the email address,
and check the result.  Send an email to that address, and don't use it
any further unless you get a reply saying "yes, this is the right
address to use" from the recipient.

The sending system's mail transport agent, not regular expressions,
determines which part is the domain to send the mail to.

The domain name system, not regular expressions, determines what
domains are valid, and what host should receive mail for that domain.

Most especially, the receiving mail system, not regular expressions,
determines what local-parts are valid.

-- 
 \       "I believe in making the world safe for our children, but not |
  `\    our children's children, because I don't think children should |
_o__)                                  be having sex."  -- Jack Handey |
Ben Finney



From steve at holdenweb.com  Tue Sep 26 15:02:44 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 15:02:44 -0400
Subject: iterator question
In-Reply-To: <1159293503.138171.312280@k70g2000cwa.googlegroups.com>
References: <mailman.716.1159290541.10491.python-list@python.org>	<slrnehipsi.ds.horpner@FIAD06.norwich.edu>
	<1159293503.138171.312280@k70g2000cwa.googlegroups.com>
Message-ID: <efbtf2$rg8$1@sea.gmane.org>

George Sakkis wrote:
> Neil Cerutti wrote:
> 
> 
>>On 2006-09-26, Neal Becker <ndbecker2 at gmail.com> wrote:
>>
>>>Any suggestions for transforming the sequence:
>>>
>>>[1, 2, 3, 4...]
>>>Where 1,2,3.. are it the ith item in an arbitrary sequence
>>>
>>>into a succession of tuples:
>>>
>>>[(1, 2), (3, 4)...]
>>>
>>>In other words, given a seq and an integer that specifies the
>>>size of tuple to return, then for example:
>>
>>It turns out there's a itertools recipe to do this; the last one
>>in the itertools recipe book:
>>
>>def grouper(n, iterable, padvalue=None):
>>    """
>>    grouper(3, 'abcdefg', 'x') --> ('a','b','c'), ('d','e','f'), ('g','x','x')
>>
>>    """
>>    return izip(*[chain(iterable, repeat(padvalue, n-1))]*n)
> 
> 
> That's not quite the same as the previous suggestions; if the last
> tuple is shorter than n, it pads the last tuple with padvalue. The OP
> didn't mention if he wants that or he'd rather have a shorter last
> tuple.
> 
In which case why not go in for a bit of requirements gold-plating and 
add a keyword Boolean argument that allows you to specify which 
behaviour you want. Or, alternatively, let the OP make sense of the 
suggestions already made.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From pavlovevidence at gmail.com  Tue Sep 12 23:31:38 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 12 Sep 2006 20:31:38 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1hlki4l.hxeyzim53ewmN%aleax@mac.com>
Message-ID: <1158118298.156680.7500@m73g2000cwd.googlegroups.com>

Alex Martelli wrote:

> IBM (PL/I's inventor and rabid defender) found out the hard way that
> making the parser more complicated, slow and bug-prone in order to allow
> such absurd obfuscation was NOT a popular trade-off -- despite IBM's
> alleged monopoly power, PL/I is now basically dead while the older,
> crankier languages that PL/I wanted to replace, Cobol and particularly
> Fortran, are still quite alive (and with reserved words ALWAYS reserved
> -- like in C, Python, Java, C#, Haskell, and basically every language
> that's even halfway sensible;-).

Except Fortran doesn't have any reserved words either:

      PROGRAM KWDS
      REAL REAL,WRITE
      WRITE=1.0
      REAL=2.0
      WRITE(*,*)WRITE,REAL
      END

(Not sure whether it's true in Fortran 9x.)


Carl Banks



From martin at v.loewis.de  Wed Sep 13 23:57:22 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 14 Sep 2006 05:57:22 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <1158192360.269240.61800@h48g2000cwc.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com><4502F115.6080202@v.loewis.de>
	<1158192360.269240.61800@h48g2000cwc.googlegroups.com>
Message-ID: <4508D322.3080202@v.loewis.de>

Fuzzyman schrieb:
> More interestingly, someone reported on Python-dev recently a speed
> improvement of around 30% (from memory) by compiling with VC 8. I know
> the grumble (almost certainly correctly) about Microsoft's 'odd'
> interpretation of the C standards in VC 8, but it looks like there are
> major benefits to switching...

You may or may not know that it is futile arguing about compiler
switching for released versions of Python, i.e. 2.3, 2.4, and 2.5.
Whether or not it might be a good idea: it can't be done, for
compatibility with prior releases.

Regards,
Martin


From mattheww at chiark.greenend.org.uk  Fri Sep 29 18:42:01 2006
From: mattheww at chiark.greenend.org.uk (Matthew Woodcraft)
Date: 29 Sep 2006 23:42:01 +0100 (BST)
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
Message-ID: <9AF*oH2rr@news.chiark.greenend.org.uk>

bjourne at gmail.com wrote:
> And so on. For every use of the for/else clause there exists a better
> alternative. Which sums up my opinion about the construct -- if you
> are using it, there's something wrong with your code.

How do you transform this?

height = 0
for block in stack:
    if block.is_marked():
        print "Lowest marked block is at height", height
        break
    height += block.height
else:
    raise SomeError("No marked block")

-M-



From chris at simplistix.co.uk  Mon Sep 11 14:53:34 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 19:53:34 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <ee40io$hno$1@sea.gmane.org>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>
	<ee40io$hno$1@sea.gmane.org>
Message-ID: <4505B0AE.6080105@simplistix.co.uk>

Steve Holden wrote:
>> Is there a how-to for this anywhere? The email package's docs are short 
>> on examples involving charsets, unicode and the like :-(
>>
> Well, it would seem like the easiest approach is to monkey-patch the use 
> of cStringIO to StringIO as recommended and see if that fixes your 
> problem. Wouldn't it?

No, not really, since at best that's a nasty (and I meant really nasty) 
hack. I'm using the email package as part of a library that I'm building 
which is to be used with various frameworks. Monkey patching modules is 
about as bad as it gets in that situation...

At worst, and most likely based on my past experience of (c)StringIO 
being used to accumulate output, it won't make a jot of difference...

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From steven.bethard at gmail.com  Wed Sep 13 11:08:45 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 13 Sep 2006 09:08:45 -0600
Subject: pickle and instancemethod objects
Message-ID: <FY6dnUU7mqlhg5XYnZ2dnUVZ_tKdnZ2d@comcast.com>

I'd like to be able to pickle instancemethod objects mainly because I 
want to be able to delay a call like ``foo(spam, badger)`` by dumping 
``foo``, ``spam`` and ``badger`` to disk and loading them again later. 
Sometimes the callable ``foo`` is actually a bound method, e.g. 
``bar.baz``, but in such cases, pickle doesn't work by default because 
it doesn't know how to pickle/unpickle instancemethod objects.

I was thinking of doing something like::

 >>> def pickle_instancemethod(method):
...     func_name = method.im_func.__name__
...     cls = method.im_class
...     obj = method.im_self
...     return unpickle_instancemethod, (func_name, cls, obj)
...
 >>> def unpickle_instancemethod(func_name, cls, obj):
...     if obj is None:
...         return getattr(cls, func_name)
...     else:
...         return getattr(obj, func_name)
...
 >>> class C(object):
...     def __init__(self, foo, bar):
...         self.foo = foo
...         self.bar = bar
...     def baz(self):
...         return self.foo, self.bar
...
 >>> copy_reg.pickle(type(C.baz),
...                 pickle_instancemethod,
...                 unpickle_instancemethod)

This seems to basically do the right thing on the few simple things I've 
tried::

 >>> c = C(42, 'badger')
 >>> new_c_baz = pickle.loads(pickle.dumps(c.baz))
 >>> new_c_baz()
(42, 'badger')
 >>> new_C_baz = pickle.loads(pickle.dumps(C.baz))
 >>> new_C_baz(C('eki', 'fekang'))
('eki', 'fekang')

Does this approach seem sound?  Am I going to run into some weird 
problems doing it this way?

Thanks,

STeVe


From ilias at lazaridis.com  Thu Sep 28 18:28:22 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 28 Sep 2006 15:28:22 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <mailman.851.1159414893.10491.python-list@python.org>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<mailman.544.1159134982.10491.python-list@python.org>
	<1159295354.259058.52990@i42g2000cwa.googlegroups.com>
	<mailman.752.1159313702.10491.python-list@python.org>
	<1159360188.483270.257080@k70g2000cwa.googlegroups.com>
	<mailman.851.1159414893.10491.python-list@python.org>
Message-ID: <1159482502.241107.28780@i42g2000cwa.googlegroups.com>

Gabriel Genellina wrote:
> At Wednesday 27/9/2006 09:29, Ilias Lazaridis wrote:
>
> >import sys
> >def f(obj):
> >     if obj:
> >         print '::: ' + repr(obj)
> >sys.displayhook = f
>
> Have you tried that? You have to filter out None, not *any* False value.

you are right. 1 == 0 showed an empty response.

this one seems to work:

def f(obj):
    if obj is not None:
        print '::: ' + repr(obj)

> > > And notice that this replaces the output of *evaluated* expressions,
> > > not any print statement executed inside your code.
> >
> >Any simple solution for this?
>
> Displaying things interactively is not the same as executing a print
> statement inside the code - I feel right they are not considered the
> same thing.

agree.

> print output goes to sys.stdout, you could replace it.

wouldn't this replace all sdtout of every python programm?

i've tried this one:

sys.sdtout = f

without success within IDLE.

> >I've looked a little at the code, but get immediately demotivated
> >seeing 72 files within a flat directroy:
> >
> >http://svn.python.org/view/python/trunk/Lib/idlelib/?rev=52013
>
> Remember that packages have not existed forever... I've seen worse things :)

ok, me too.

but placing at minimum 2 directories like:

core
gui

could simpify things already very much.

.

--
http://lazaridis.com



From george.sakkis at gmail.com  Fri Sep  8 19:02:59 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 8 Sep 2006 16:02:59 -0700
Subject: Using Beautiful Soup to entangle bookmarks.html
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
	<1157720105.181682.169290@m73g2000cwd.googlegroups.com>
	<1157723311.085204.168070@i42g2000cwa.googlegroups.com>
Message-ID: <1157756579.885367.294880@m73g2000cwd.googlegroups.com>

Francach wrote:
> Hi George,
>
> Firefox lets you group the bookmarks along with other information into
> directories and sub-directories. Firefox uses header tags for this
> purpose. I'd like to get this grouping information out aswell.
>
> Regards,
> Martin.

Here's what I came up with:
http://rafb.net/paste/results/G91EAo70.html. Tested only on my
bookmarks; see if it works for you.

For each subfolder there is a recursive call that walks the respective
subtree, so it's probably not the most efficient solution, but I
couldn't think of any one-pass way to do it using BeautifulSoup.

George



From gherron at islandtraining.com  Wed Sep 20 02:23:32 2006
From: gherron at islandtraining.com (Gary Herron)
Date: Tue, 19 Sep 2006 23:23:32 -0700
Subject: include statement
In-Reply-To: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
Message-ID: <4510DE64.2000604@islandtraining.com>

joakim.hove at gmail.com wrote:
> Hello,
>
> is it possible in python to include another python source file into the
> current namespace, i.e.completely analogous to the #include statement
> in C.
>
> Regards Joakim
>
>   
No (thank heavens)!  We left #include and other such primitive 
functionality back with the dinosaurs (C and its relatives) when we 
moved into the world of tje modern sophisticated programming language 
Python.  Tell us why you are contemplating such a thing, and someone 
here will help you implement it the "Pythonic" way.

Gary Herron



From paolopantaleo at gmail.com  Fri Sep 22 08:51:24 2006
From: paolopantaleo at gmail.com (Paolo Pantaleo)
Date: Fri, 22 Sep 2006 14:51:24 +0200
Subject: Writing Video conference software for Windows
In-Reply-To: <1158896686.543022.286760@i42g2000cwa.googlegroups.com>
References: <mailman.265.1158667756.10491.python-list@python.org>
	<1158896686.543022.286760@i42g2000cwa.googlegroups.com>
Message-ID: <83e8215e0609220551j2cca8c66g62c20020b89b5281@mail.gmail.com>

Thnx everybody for the precious help :)

Someone said about VNC... I'll take a look, but since it is an
exercise I need to do it, I can't just say someone else arelady did
that :)

Everything seems quite useful. I forgot two specifications:

1. Screen should be split in small squares and only the changing
squares must be transmitted (Ok it shouldn't be too difficult)

2. The comunication must be in multicast

I will spend some time testing the resources.

PAolo


From dinov at exchange.microsoft.com  Wed Sep  6 17:42:59 2006
From: dinov at exchange.microsoft.com (Dino Viehland)
Date: Wed, 6 Sep 2006 14:42:59 -0700
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <ednc4f$ibl$1@newsreader2.netcologne.de>
References: <edmlbv$a9h$1@newsreader2.netcologne.de><8MqdneHW48EjaWPZnZ2dnUVZ_sednZ2d@comcast.com>
	<edn23m$s6$1@newsreader2.netcologne.de>
	<mailman.90.1157570501.5279.python-list@python.org>
	<ednc4f$ibl$1@newsreader2.netcologne.de>
Message-ID: <7AD436E4270DD54A94238001769C22273843B06BDD@DF-GRTDANE-MSG.exchange.corp.microsoft.com>

Warnings is one of the features that didn't quite make it for v1.0.  In general w.r.t. non-ASCII characters you'll find IronPython to be more like Jython in that all strings are Unicode strings.  But other than that we do support PEP-263 for the purpose of defining alternate file encodings.

We're also aware of the startup time and will be working on reducing that in the future.  Thanks for the feedback!

-----Original Message-----
From: python-list-bounces+dinov=microsoft.com at python.org [mailto:python-list-bounces+dinov=microsoft.com at python.org] On Behalf Of Claudio Grondi
Sent: Wednesday, September 06, 2006 1:47 PM
To: python-list at python.org
Subject: Re: IronPython 1.0 - Bugs or Features?

tjreedy wrote:
> "Claudio Grondi" <claudio.grondi at freenet.de> wrote in message
> news:edn23m$s6$1 at newsreader2.netcologne.de...
>
>>I also erroneously assumed, that the first problem was detected during
>>parsing ... so, by the way: how can I distinguish an error raised
>>while parsing the code and an error raised when actually running the code?
>
>
> Parsing detects and reports syntax errors and maybe something else if
> you use non-ascii chars without matching coding cookie.  Other errors
> are runtime.
Let's consider
   print '"Data   ?"'

In CPython 2.4.2 there is in case of non-ascii character:
   sys:1: DeprecationWarning: Non-ASCII character '\xea' in file C:\IronPython-1.0-BugsOrFeatures.py on line 3, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details "Data?? ?"

IronPython does not raise any warning and outputs:
"Data?? ?"

So it seems, that IronPython is not that close to CPython as I have it expected.
It takes much more time to run this above simple script in IronPython as in CPython - it feels as IronPython were extremely busy with starting itself.

Claudio Grondi
--
http://mail.python.org/mailman/listinfo/python-list

From Bulkan at gmail.com  Wed Sep 27 00:39:28 2006
From: Bulkan at gmail.com (placid)
Date: 26 Sep 2006 21:39:28 -0700
Subject: Starting Win32 Service
Message-ID: <1159331968.764830.78640@b28g2000cwb.googlegroups.com>

Hi all,

Using Tim Golden's wmi module you can get the service names

import wmi
c = wmi.WMI ()
stopped_services = c.Win32_Service (StartMode="Auto", State="Stopped")
if stopped_services:
  for s in stopped_services:
    print s.Caption, "service is not running"
else:
  print "No auto services stopped"

http://tgolden.sc.sabren.com/python/wmi_cookbook.html#automatic_services


but how do i start services that are stopped?

Cheers



From mike.klaas at gmail.com  Thu Sep 21 18:17:01 2006
From: mike.klaas at gmail.com (Klaas)
Date: 21 Sep 2006 15:17:01 -0700
Subject: Strange behaviour of 'is'
In-Reply-To: <slrneh5ttn.pik.spamspam@bowser.marioworld>
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
	<slrneh5ttn.pik.spamspam@bowser.marioworld>
Message-ID: <1158877020.994351.110550@k70g2000cwa.googlegroups.com>

Ben C wrote:
> On 2006-09-21, Fijoy George <tofijoy at yahoo.co.in> wrote:

> > But my understanding does not explain the result of the second comparison.
> > According to the experiment, y[0] and y[1] are the same object!
>
> I'm as baffled as you, even more so its implication:

> >>> a = 2.
> >>> b = 2.
>
> >>> a is b
> False
>
> >>> a, b = 2., 2.
> >>> a is b
> True

It is suprising that it is easier to recognize identical constants
within the same expression?

-Mike



From me at privacy.net  Sat Sep 16 12:22:46 2006
From: me at privacy.net (Dan Sommers)
Date: Sat, 16 Sep 2006 12:22:46 -0400
Subject: Coding Nested Loops
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.155.1158356025.10491.python-list@python.org>
	<eeg5o2$226$00$1@news.t-online.com>
	<mailman.176.1158420580.10491.python-list@python.org>
Message-ID: <m2bqpfeq7d.fsf@unique.fqdn>

On Sat, 16 Sep 2006 08:29:26 -0700 (PDT),
Rich Shepard <rshepard at appl-ecosys.com> wrote:

>   Two questions germane to random: 1) Why wasn't choice available when
> I used 'import random,' ...

When you import random, all you're doing is importing the module; you
have to specify any given attribute thereof:

    import random
    random.choice( [ 1, 5, 7 ] )

> ... 2) What are the differences between 'choice' and 'shuffle?'

choice chooses one element of a given list and leaves the list itself
alone; shuffle shuffles the list, presumably so that you can iterate
through the elements yourself.

HTH,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>
"I wish people would die in alphabetical order." -- My wife, the genealogist


From duncan.booth at invalid.invalid  Thu Sep  7 04:52:07 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 7 Sep 2006 08:52:07 GMT
Subject: No ValueError for large exponents?
References: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
	<44FF5773.40501@jessikat.plus.net>
Message-ID: <Xns98376467FEB0Bduncanbooth@127.0.0.1>

Robin Becker <robin at NOSPAMreportlab.com> wrote:

> enigmadude wrote:
>> As many have heard, IronPython 1.0 was released. When I was looking
>> through the listed differences between CPython and IronPython, the
>> document mentioned that using large exponents such as 10 **
>> 735293857239475 will cause CPython to hang, whereas IronPython will
>> raise a ValueError. Trying this on my own machine, it did indeed seem
>> to cause CPython to hang. In cases such as this, should this be
>> considered a bug in the CPython implementation that needs to be fixed?
>> Or is there a reason for this, such as consideration of future changes
>> and language definition vs language implementation, etc.?
>> 
> I suspect the hang may be python actually trying to work out the
> 1 followed by 735293857239475 zeroes. Perhaps IronPython has a forward 
> looking algorithm that knows when to give up early.

My guess would be that IronPython preallocates sufficient memory for the 
resulting string, so will fail immediately, and CPython must be trying to 
grow the string dynamically.


From CedricCicada at gmail.com  Wed Sep  6 15:55:59 2006
From: CedricCicada at gmail.com (CedricCicada at gmail.com)
Date: 6 Sep 2006 12:55:59 -0700
Subject: Data sticking around too long
Message-ID: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>

Greetings!

Here's my script:

########  start of script
class ScannerCommand:
    taskName = ''
    scanList = []

    def __init__(self):
        print "Creating a ScannerCommand object; list has " + \
              str(len(self.scanList)) + " objects."

class Scanner:
    def Read(self, data):
        command = ScannerCommand()
        command.scanList.append(data)
        return command

class Handler:
    def Process(self, dataList):
        print "Processing data"
        for data in dataList:
            print "   " + data
        print "Finished processing data."

if __name__ == '__main__':
    s = Scanner()
    count = 0
    for data in ["Zero", "One", "Two", "Three"]:
        command = s.Read(data)
        handler = Handler()
        handler.Process(command.scanList)
##############  End of script

Here's the result:

##########  Start of result
Processing data
   Zero
Finished processing data.
Creating a ScannerCommand object; list has 1 objects.
Processing data
   Zero
   One
Finished processing data.
Creating a ScannerCommand object; list has 2 objects.
Processing data
   Zero
   One
   Two
Finished processing data.
Creating a ScannerCommand object; list has 3 objects.
Processing data
   Zero
   One
   Two
   Three
Finished processing data.
################  End of result

I had expected to get "Zero" by itself, then "One" by itself, and so
on.

Why is the ScannerCommand object being created with a scanList that
contains the data that was in the previously created ScannerCommand
object?  And what do I have to do to ensure that the code that is run
when I call ScannerCommand() gives me an object with an empty scanList?

I am a C++ developer in a shop that uses some Python as well, and I
just ran across this behavior for the first time.  I believe it is due
to the difference between binding a variable to an object, as Python
does, and actually creating the variable, as a similar C++ application
would do.

Thank you very much.

Rob Richardson
RAD-CON, Inc.
Bay Village, OH



From claudio.grondi at freenet.de  Wed Sep  6 10:18:39 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Wed, 06 Sep 2006 16:18:39 +0200
Subject: IronPython 1.0 - Bugs or Features?
Message-ID: <edmlbv$a9h$1@newsreader2.netcologne.de>

(just wanted to share my experience with IronPython 1.0)

The context:
   C:\IronPython> ipy.exe
   IronPython 1.0.60816 on .NET 2.0.50727.42
   Copyright (c) Microsoft Corporation. All rights reserved.
vs.
   C:\Python24> python.exe
   Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] 
on win32

IronPython raises "UnboundLocalError: local variable 'strData' 
referenced before assignment" error in following case:
<code>
     while(someCondition):
       try:
         strData = strSomeValue()
       except:
         pass
       if( type(strData) == str ) : ### <<< HERE THE ERROR
         doSomething()
</code>
CPython 2.4.2 doesn't raise an error with same code.

As strData is not set anywhere before in the code it seems, that 
IronPython is somehow right, but I am not sure if it is a bug or a feature.

Another problem with IronPython where CPython 2.4.2 runs ok was while I 
was trying to do:
   f = file(r'\\.\PhysicalDrive0', 'rb')
getting "ValueError: FileStream will not open Win32 devices such as disk 
partitions and tape drives. Avoid use of "\\.\" in the path."
Here the same - I am not sure if it is a bug or a feature.

Can someone knowledgeable elaborate on it a bit please?

Claudio Grondi


From duncan.booth at invalid.invalid  Tue Sep 19 17:24:08 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 19 Sep 2006 21:24:08 GMT
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<1158694852.061159.247800@k70g2000cwa.googlegroups.com>
Message-ID: <Xns9843E3E675BDAduncanbooth@127.0.0.1>

"George Sakkis" <george.sakkis at gmail.com> wrote:

> Bruno Desthuilliers wrote:
> 
>> I must definitively be dumb, but so far I fail to see how it's better
>> than split and rsplit:
> 
> I fail to see it too. What's the point of returning the separator since
> the caller passes it anyway* ?
> 
The separator is only returned if it was found otherwise you get back an 
empty string. Concatenating the elements of the tuple that is returned 
always gives you the original string.

It is quite similar to using split(sep,1), but reduces the amount of 
special case handling for cases where the separator isn't found.



From antoine at vo.lu  Tue Sep 26 16:10:41 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Tue, 26 Sep 2006 22:10:41 +0200
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <45198937@news.vo.lu>

John Salerno wrote:
> It's a nice thought that a person can earn a living programming with 
> Python, which is fun enough to use just for its own sake. But for 
> someone like me (i.e. no programming experience) it's always a little 
> disheartening to see that most (if not all) job descriptions that ask 
> for Python still require some C/C++ or other language knowledge. I 
> suppose this isn't an issue if you studied CS in college, because you 
> would have been exposed to many languages.
> 
> But what if you are an expert Python program and have zero clue about 
> other languages? Can you still earn a living that way, or do most/all 
> companies require multiple language proficiency?
> 
> (I suppose this isn't exactly a Python problem, either. I'm sure even 
> companies that don't use Python still use multiple languages. Maybe it 
> isn't a good idea to focus entirely on a single language, depending on 
> the job at hand.)

hmm, I don't know, but I can't imagine someone being a Python (or any 
other language) wizard, without knowing other languages. Does that even 
exist?

Regards,
antoine


From http  Fri Sep 29 13:29:36 2006
From: http (Paul Rubin)
Date: 29 Sep 2006 10:29:36 -0700
Subject: Making sure script only runs once instance at a time.
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>
	<G53642238.475.1301.1@mx-extra>
	<9afea2ac0609290857l867f432g5725b5e9efc6ec00@mail.gmail.com>
	<mailman.962.1159550340.10491.python-list@python.org>
Message-ID: <7x4puq8ttr.fsf@ruckus.brouhaha.com>

Fredrik Lundh <fredrik at pythonware.com> writes:
> opening a file for writing doesn't lock it on Unix.  if you want
> locking, you need other mechanisms, and I'm not sure any of them
> work properly on all configurations, under all circumstances.

Hmm.  What about trying to listen on a PF_UNIX socket associated with
the lock file name.  If another process has the socket bound, you get
EISCONN.  But if the other process exists, maybe there's a delay
before another process can have it, like there is for TCP (I haven't
tested, or at least I don't remember the result).


From kode4u at gmail.com  Thu Sep 21 22:03:51 2006
From: kode4u at gmail.com (kode4u)
Date: 21 Sep 2006 19:03:51 -0700
Subject: How to get ip setting, dynamic ip or static ip?
In-Reply-To: <Xns984598CE3A032duncanbooth@127.0.0.1>
References: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>
	<Xns984598CE3A032duncanbooth@127.0.0.1>
Message-ID: <1158890631.297902.237640@d34g2000cwd.googlegroups.com>

The way has one shortcoming. That's it depend on the proper language
version of Windows. If I'm using Simplified Chinese Windows, I must
modify some strings.
:(

Duncan Booth wrote:
> "kode4u" <kode4u at gmail.com> wrote:
>
> > How to use python get my windows box's ip setting type? Dynamic ip, or
> > static ip?
> >
> > If it's static ip, what's the exact value?
> >
> Here's one way:
>
> def ipinfo(interface="Local Area Connection"):
> 	dhcpenabled = False
> 	staticip = None
> 	subnetmask = None
> 	for l in os.popen('netsh interface ip show address "%s"' % interface):
> 		l = l.strip()
> 		if l.startswith('DHCP enabled'):
> 			dhcpenabled = l.endswith('Yes')
> 		if l.startswith("IP Address"):
> 			staticip = l.rsplit(None,1)[-1]
> 		if l.startswith("SubnetMask"):
> 			subnetmask = l.rsplit(None,1)[-1]
> 	return dhcpenabled, staticip, subnetmask
>
> >>> ipinfo()
> (True, None, None)
> >>> ipinfo("VMware Network Adapter VMnet1")
> (False, '192.168.126.1', '255.255.255.0')



From robert.kern at gmail.com  Sun Sep  3 06:01:46 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 03 Sep 2006 05:01:46 -0500
Subject: Problem loading true-type font with PIL - "solved"
In-Reply-To: <ede67u$at6$1@sea.gmane.org>
References: <e3b9a$44f8597f$54482a8f$31423@news.hispeed.ch>	<d8339$44f9b228$54482a8f$32099@news.hispeed.ch>
	<ede67u$at6$1@sea.gmane.org>
Message-ID: <ede96a$igg$1@sea.gmane.org>

Fredrik Lundh wrote:
> Christian Stapfer wrote:
> 
>> Problem "solved" by rudely installing PIL 1.1.5 for Windows and
>> Python 2.4 from http://www.pythonware.com/products/pil/
>> right on top of my existing "Python Enthought Edition--Python
>> 2.4.3 for Windows". This might have destroyed the consistency
>> of the overall installation, of course. I'm well punished
>> for installing Enthought Python 2.4.3: Next time I will again
>> install all packages that I need myself, as I did for Python
>> 2.3, instead of using a prepackaged distribution like Enthought
>> Python.
> 
> Since the truetype extension is quite popular, and from what I'm told 
> worked just fine in earlier Enthought releases, this is probably just an 
> accidental omission.  I'm sure the Enthought people will fix this if you 
> report it to them.

https://svn.enthought.com/enthought/ticket/864

The person who builds the Enthought Edition releases is out on vacation this 
week, so a new release will probably wait until he comes back. In the meantime, 
installing Fredrik's binaries on top of ours should work just fine.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From polychrom at softhome.net  Sat Sep 23 14:48:42 2006
From: polychrom at softhome.net (mistral)
Date: 23 Sep 2006 11:48:42 -0700
Subject: Need compile python code
In-Reply-To: <1159029598.538538.39510@i42g2000cwa.googlegroups.com>
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
	<4nknl9Far902U1@individual.net>
	<1159017947.895479.13750@i42g2000cwa.googlegroups.com>
	<1159029598.538538.39510@i42g2000cwa.googlegroups.com>
Message-ID: <1159037322.895243.61950@i42g2000cwa.googlegroups.com>


MonkeeSage ?????(?):

> mistral wrote:
> > Just to comple python ode - it creates html page, nothing more, nothing
> > else.. Just generate one html page.
>
> I *think* this is what you want:
>
> python -O -m py_compile file.py
> python file.pyo
>
> See: http://docs.python.org/lib/module-pycompile.html
>
> Regards,
> Jordan

----------
this not work for me, show compilation error.  Is there simple way
compile pythone file? its absolutely unclear with command line. Just
show me exact command I need run(from python interactive shell?)



From __peter__ at web.de  Thu Sep 14 05:53:40 2006
From: __peter__ at web.de (Peter Otten)
Date: Thu, 14 Sep 2006 11:53:40 +0200
Subject: descriptor problems
References: <45091f01$0$7317$5a62ac22@per-qv1-newsreader-01.iinet.net.au>
Message-ID: <eeb8oq$79d$01$1@news.t-online.com>

Gary Stephenson wrote:

> I want to define a class-level attribute that will be shared by all
> subclasses.  That is, I want this class, every subclass of this class,
> every instance of this class and every instance of every subclass to be
> able to
> read and write to the _same_ slot/variable.  But I can't figure out how to
> do it.

class A:
    class __metaclass__(type):
        _shared = 42
        def get_shared(self):
            return self.__class__._shared
        def set_shared(self, value):
            print "%r --> %r" % (self._shared, value)
            self.__class__._shared = value
        shared = property(get_shared, set_shared)

    def get_shared(self):
        return self.__class__.shared
    def set_shared(self, value):
        self.__class__.shared = value
    shared = property(get_shared, set_shared)

Does that what you want? 

Peter



From felipe.lessa at gmail.com  Sun Sep 10 08:30:08 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Sun, 10 Sep 2006 09:30:08 -0300
Subject: No ValueError for large exponents?
In-Reply-To: <44FF5773.40501@jessikat.plus.net>
References: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>
	<44FF5773.40501@jessikat.plus.net>
Message-ID: <c2701f5c0609100530n12229dc5u5390256b486aa223@mail.gmail.com>

2006/9/6, Robin Becker <robin at nospamreportlab.com>:
> enigmadude wrote:
> > As many have heard, IronPython 1.0 was released. When I was looking
> > through the listed differences between CPython and IronPython, the
> > document mentioned that using large exponents such as 10 **
> > 735293857239475 will cause CPython to hang, whereas IronPython will
> > raise a ValueError. Trying this on my own machine, it did indeed seem
> > to cause CPython to hang. In cases such as this, should this be
> > considered a bug in the CPython implementation that needs to be fixed?
> > Or is there a reason for this, such as consideration of future changes
> > and language definition vs language implementation, etc.?
> >
> I suspect the hang may be python actually trying to work out the
> 1 followed by 735293857239475 zeroes. Perhaps IronPython has a forward
> looking algorithm that knows when to give up early.

I think that IronPython does the same as the .Net runtime does. Look
at boo's output:

$ booish
?Welcome to booish, an interpreter for the boo programming language.

Running boo 0.7.5.2013.

The following builtin functions are available:
    dir(Type): lists the members of a type
    help(Type): prints detailed information about a type
    load(string): evals an external boo file
    globals(): returns the names of all variables known to the interpreter

Enter boo code in the prompt below.
>>> 10**100
1E+100
>>> 10**1000000
?
>>> 10**735293857239475
ERROR: Error reading from 'input3': 'Value too large or too small.'.
>>> (10**100).GetType()
System.Double

Well, it's a double on boo instead of a very long int as in Python. I
don't know if in IronPython it's the same.

-- 
Felipe.

From justin.mailinglists at gmail.com  Tue Sep  5 04:18:47 2006
From: justin.mailinglists at gmail.com (Justin Ezequiel)
Date: 5 Sep 2006 01:18:47 -0700
Subject: Using "Content-Disposition" in HTTP download
In-Reply-To: <1157389315.923598.305720@i3g2000cwc.googlegroups.com>
References: <1157389315.923598.305720@i3g2000cwc.googlegroups.com>
Message-ID: <1157444327.071803.113660@74g2000cwt.googlegroups.com>

dclist at gmail.com wrote:
> What is the correct way to download a file through HTTP and save it to
> the file name suggested by "Content-Disposition"?
>

Perhaps something along the lines of the following?

>>> url = r'http://www.4so9.com/cauca/files/ban-doc/francois/stingray/198%20lb%20stingray%201%20.JPG'
>>> proxy = 'proxy02:8080'
>>> import httplib
>>> c = httplib.HTTPConnection(proxy)
>>> c.request('GET', url)
>>> resp = c.getresponse()
>>> for k in resp.msg.keys():
... 	print resp.msg.getallmatchingheaders(k)
...
['Content-Length: 64632\r\n']
['Proxy-Connection: close\r\n']
['X-Cache: HIT from SPSweb\r\n']
['Accept-Ranges: bytes\r\n']
['Server: Apache/2.0.51 (Fedora)\r\n']
['Last-Modified: Fri, 03 Dec 2004 16:57:30 GMT\r\n']
['ETag: "3b2375-fc78-8c13280"\r\n']
['Date: Tue, 05 Sep 2006 10:35:48 GMT\r\n']
['Content-Type: image/jpeg\r\n']
['Age: 31440\r\n']
>>> data = resp.fp.read()
>>> len(data)
64632
>>> data[:100]
'\xff\xd8\xff\xe0\x00\x10JFIF\x00\x01\x02\x02\x00\x00\x00\x00\x00\x00\xff\xe1\x057Exif\x00\x00II*\x00\x08\x00\x00\x00\t\x00\x0f\x01\x02\x00\x06\x00\x00\x00z\x00\x00\x00\x10\x01\x02\x00\x13\x00\x00\x00\x80\x00\x00\x00\x12\x01\x03\x00\x01\x00\x00\x00\x01\x00\x00\x00\x1a\x01\x05\x00\x01\x00\x00\x00\x93\x00\x00\x00\x1b\x01\x05\x00\x01\x00\x00\x00\x9b\x00\x00\x00'
>>> resp.fp.close()
>>>



From michele.simionato at gmail.com  Wed Sep 27 10:46:48 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 27 Sep 2006 07:46:48 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <1159368408.593970.110380@k70g2000cwa.googlegroups.com>

John Salerno wrote:
> But what if you are an expert Python program and have zero clue about
> other languages?

Python is not a trivial language (think of generators, decorators,
metaclasses, etc)
If you can master it, you can master even other languages, so I would
hire somebody
who knows Python only.  Notice that by "knowing Python" I mean also
knowing its
standard library and the most common Python third party libraries (GUI
toolkits, XML toolkits, SQL libraries, twisted, etc. etc.)

     Michele Simionato



From duncan.booth at invalid.invalid  Mon Sep 25 03:33:39 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 07:33:39 GMT
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org>
Message-ID: <Xns984957162532Aduncanbooth@127.0.0.1>

willie <willie at jamots.com> wrote:

> Is it too ridiculous to suggest that it'd be nice
> if the unicode object were to remember the
> encoding of the string it was decoded from?
> So that it's feasible to calculate the number
> of bytes that make up the unicode code points.

So what sort of output do you expect from this:

>>> a = '\xc9'.decode('latin1')
>>> b = '\xc3\x89'.decode('utf8')
>>> print (a+b).bytes()
???

And if you say that's an unfair question because you expected all the byte 
strings to be using the same encoding then there's no point storing it on 
every unicode object; you might as well store it once globally.


From roy at panix.com  Wed Sep 27 08:55:50 2006
From: roy at panix.com (Roy Smith)
Date: Wed, 27 Sep 2006 08:55:50 -0400
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159305924.604677.118300@i42g2000cwa.googlegroups.com>
	<roy-055E4F.20055226092006@reader2.panix.com>
	<1159337418.630332.80100@k70g2000cwa.googlegroups.com>
Message-ID: <roy-8F7653.08555027092006@reader2.panix.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> wrote:
> SQL I don't class as a programming language, but it's certainly worth
> learning for most modern programmers.

I suppose it's not a *programming* language in the sense that it's not  
Turning Complete, but it *is* a language, with a complex syntax.  But, more 
to the point, knowing SQL opens your eyes to a way to think about, 
organize, and manipulate data which is very different from conventional 
procedural languages.  That's the real value in learning it.

Oh, I left out regular expressions.  Again, not a programming language 
per-se, but a powerful and complex tool which manipulates data in a very 
different way from other things.  There are jobs for which good grasp of 
regexes will save you hundreds of lines of code.  It's not the right tool 
for every job, but it's a tool that anybody who calls themselves a 
professional programmer should have in their collection.


From steve at holdenweb.com  Wed Sep 20 07:16:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 07:16:32 -0400
Subject: Request for elucidation: enhanced generators
In-Reply-To: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
Message-ID: <eer7tk$sta$1@sea.gmane.org>

Ben Sizer wrote:
> A simple question - can anybody give a short example of how these work
> and what they are good for? I've read PEP 342 and the associated bit in
> the What's New section and it's still all Greek to me. The latter seems
> to focus on how to do it, rather than why you'd do it, so it doesn't
> aid the understanding too much.
> 
Unti 2.5 the yield keyword could only be used to produce a value from a 
generator - it introduced a statement.

Now the yield keyword can be used as an expression inside a generator, 
allowing you to send values into the generator by calling its .send() 
method.

If you have no use case for this you are, as always, perfectly free to 
ignore it, as the majority of Python users may well choose to do. Your 
existing generators should continue to work.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From cliff at develix.com  Thu Sep 14 06:24:15 2006
From: cliff at develix.com (Cliff Wells)
Date: Thu, 14 Sep 2006 03:24:15 -0700
Subject: Why not event-driven packages in other than the main thread?
In-Reply-To: <1158229374.3622.109.camel@devilbox>
References: <eeb6go$kfk$1@news.uit.no>  <1158229374.3622.109.camel@devilbox>
Message-ID: <1158229455.3622.111.camel@devilbox>

On Thu, 2006-09-14 at 03:22 -0700, Cliff Wells wrote:

> They probably use signals (Twisted I'm sure does) and it's documented
> that signals don't work with threads:
> 
> http://docs.python.org/lib/module-signal.html


Er, specifically, they only work with the main thread.

Cliff
-- 



From tim.peters at gmail.com  Tue Sep 12 03:12:51 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 12 Sep 2006 03:12:51 -0400
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
Message-ID: <1f7befae0609120012o3a15d411scda8b5e0ca807394@mail.gmail.com>

[Licheng Fang]
>> Oh, please do have a look at the second link I've posted. There's a
>> table comparing the regexp engines. The engines you've tested probably
>> all use an NFA implementation.

[Bryan Olson]
> Unfortunately, the stuff about NFA's is wrong. Friedl's awful
> book

Strongly disagree:  it's an excellent book about the /pragmatics/ of
using "regular expressions" as most widely implemented.  It's not at
all about "regular expressions" in the  CompSci sense of the term,
which appears to be your complaint.

> was the first time I saw this confusion about what NFA is;
> I don't know if he originated the mess or just propagated it.

As far as I could tell at the time, he originated it.  I'm not happy
about that either.

> "Nondeterministic finite automata" is well defined in theory
> of computation. The set of languages accepted by NFA's is
> exactly the same as the set accepted by DFA's.

And which has very little to do with "regular expressions" as most
widely implemented -- gimmicks like backreferences are wholly outside
the DFA formalism.

> What Python uses is search-and-backtrack. Unfortunately such
> engines don't have much theory behind them, and it's hard to
> reason generally about what they do.

Yup X 3, and the last is precisely why Friedl's book is valuable for
people using "NFA" implementations:  Friedl does a good job of
explaining when and why you're likely to trigger atrocious runtime
performance, and gives practical general techniques for avoiding those
problems.  None of that has anything to do with CompSci regexps
either, but is vital knowledge for people hoping to make happy
non-trivial use of Python/Perl/etc regexps.


From jaysherby at gmail.com  Wed Sep  6 20:54:02 2006
From: jaysherby at gmail.com (Jay)
Date: 6 Sep 2006 17:54:02 -0700
Subject: tkinter text <Key> event
Message-ID: <1157590442.881433.251550@d34g2000cwd.googlegroups.com>

I'm having trouble with using the <Key> event with the Text object.
When I use them together (which is a logical combination), I use this
code:

	textbox = Text(root, wrap="word", height=15, width=50)
	textbox.bind("<Key>", resolveGlyphs)

def resolveGlyphs(event):
	textBuf = textbox.get(1.0, END)
	print(textBuf)

What it prints out for me is everything except for the last character
-- the one that triggered the event.  How can I get the entire
contents?

I apologize if this has already been discussed.  I searched and
couldn't find it.



From duane.kaufman at gmail.com  Mon Sep 11 10:15:52 2006
From: duane.kaufman at gmail.com (TheSeeker)
Date: 11 Sep 2006 07:15:52 -0700
Subject: A cross platform systray icon
In-Reply-To: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>
References: <slrnegaki9.qqd.nick@irishsea.home.craig-wood.com>
Message-ID: <1157984152.211362.312300@m73g2000cwd.googlegroups.com>


Nick Craig-Wood wrote:
> Does anyone have some hints / tips / experience with making a cross
> platform systray icon?  It should work on Windows, Gnome and KDE at
> minimum.
>
> I've seen the win32all code which is very similar to the C code I've
> written before for Windows.  It would be a small irritation to have to
> integrate its event loop with whichever GUI framework I'm using for
> the rest of it though.
> 
You might do a search for TaskBarIcon in the wxPython toolkit.

Duane



From bignose+hates-spam at benfinney.id.au  Wed Sep 20 19:08:20 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Thu, 21 Sep 2006 09:08:20 +1000
Subject: "list index out of range" error
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
Message-ID: <873bam16hn.fsf@benfinney.id.au>

"sam" <python.sam at googlemail.com> writes:

> hey everybody, this is my first time posting here. i'm pretty new to
> python and programming in general (as you'll soon work out for
> yourselves...)

On behalf of the entire Python community, *thank you* for putting this
disclaimer only in the body of your message and using the Subject
field for a descriptive summary of the topic.

There are far too many threads where the only information available
from the Subject is "I'm a newbie, help!" which is worse than useless
for knowing what the thread is about. Thank you for not following this
tedious trend!

-- 
 \      "If sharing a thing in no way diminishes it, it is not rightly |
  `\                   owned if it is not shared."  -- Saint Augustine |
_o__)                                                                  |
Ben Finney



From fccoelho at gmail.com  Wed Sep 27 09:38:05 2006
From: fccoelho at gmail.com (Flavio)
Date: 27 Sep 2006 06:38:05 -0700
Subject: f2py on windows tutorials
In-Reply-To: <mailman.753.1159314004.10491.python-list@python.org>
References: <1159019890.437503.131140@b28g2000cwb.googlegroups.com>
	<mailman.504.1159044688.10491.python-list@python.org>
	<1159297093.543871.108100@h48g2000cwc.googlegroups.com>
	<mailman.730.1159299369.10491.python-list@python.org>
	<1159303874.746238.142120@h48g2000cwc.googlegroups.com>
	<efcddb$itm$1@sea.gmane.org>
	<mailman.753.1159314004.10491.python-list@python.org>
Message-ID: <1159364285.218632.35040@h48g2000cwc.googlegroups.com>

Ok,

I tried that and it seems we are making progress

so here is my command:

python setup.py build_ext --compiler=mingw32 --fcompiler=gnu

Now it is complaining about my pyf!!

error: unknown file type '.pyf'

here is my setup .py:

import setuptools, os
from numpy.distutils.core import setup, Extension

#Configuring Build
libs=[];libdirs=[];f2pyopts=[]
if os.name == 'nt':
    f2pyopts.extend(["--compiler=mingw32","--fcompiler=gnu"])



flib = Extension(name='flib',
                        libraries=libs,
                        library_dirs=libdirs,
                        f2py_options=f2pyopts,

sources=['model-builder/Bayes/flib.f','model-builder/Bayes/flib.pyf',]
                        )
etc...
>
> More specifically:
>
>    python setup.py build_ext --compiler=mingw --fcompiler=gnu
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>   that is made terrible by our own mad attempt to interpret it as though it had
>   an underlying truth."
>    -- Umberto Eco



From http  Tue Sep 12 06:06:24 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 03:06:24 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
Message-ID: <7xzmd5e6vz.fsf@ruckus.brouhaha.com>

"Mike Owens" <mikeowens at gmail.com> writes:
> No it doesn't. If you don't like SQLite's design decisions, write your
> own embedded relational database, and stop yapping about something you
> didn't lift a finger to create, but are clearly trying to benefit
> from.

That's silly.  The sqlite developers are making all kinds of claims on
their web site, in order to attract users and build mindshare and gain
the benefits thereof.  If the claims aren't valid, it's completely
appropriate for others to call attention to it, whether or not they
feel like doing anything to fix it.

It's just like anything else.  If you think your Congressperson is
misleading the public about something or pursuing a bad policy, you
should speak out about it.  That doesn't mean you need to run for
Congress yourself.


From python.list at tim.thechases.com  Mon Sep  4 17:09:57 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 04 Sep 2006 16:09:57 -0500
Subject: Access elements from nested tuples
In-Reply-To: <4m3ht8F4avl8U1@news.dfncis.de>
References: <4m3ht8F4avl8U1@news.dfncis.de>
Message-ID: <44FC9625.3000606@tim.thechases.com>

> t = (1, (2, 3))
> 
> I am bit suprised, that I cannot access '3' via:
> t[1].[1] # syntax error
> 
> But t[1].__getitem__(1) works like expected.
> 
> Why is that?

What is "t"?  It's a tuple.  A tuple can be indexed, or you can 
call its __getitem__ method.  Thus, the one-th element of t is either

	t[1]

or

	t.__getitem__(1)

You're asking for the sub-element of that thing just returned. 
Thus, you either need to use

	t[1][1]

or

	t[1]._getitem(1)

or

	t.__getitem__(1)[1]

or

	t.__getitem__(1).__getitem__(1)



Imagine that you used

	x = t[1]

You wouldn't use

	x.[1]

you'd use

	x[1]

or

	x.__getitem__(1)

Same thing.  As simple as search-and-replace of "t[1]" with "x"

-tkc






From steve at holdenweb.com  Wed Sep  6 03:41:35 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:41:35 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157484212.885076.304340@h48g2000cwc.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
Message-ID: <44FE7BAF.2060206@holdenweb.com>

mensanator at aol.com wrote:
> skip at pobox.com wrote:
> 
>>>>I think your whole experience is based on it.
>>
>>    >> But shouldn't a significant feature like that be explained in the
>>    >> Python manuals? Why should I go dig up Sqlite FAQs to learn what
>>    >> should have been in the manuals?
>>
>>I don't know, but I will take a stab at a plausible explanation.  First,
>>sqlite support has only been in Python for a month or three.  Its first
>>official unveiling will be when 2.5 is released.
> 
> 
> Although possibly too late for the final release, now would be a
> good time to straighten out the documentation.
> 
And you would be the best person to do it, since you're the one this has 
bitten in the tender parts.

> 
>>Second, it's common when
>>wrapping functionality into Python to rely on the documentation for the
>>thing being wrapped.  The thinner the wrapper, the more you tend to rely on
>>the underlying documentation.  Also, the more functionally rich the thing
>>you've wrapped, the more you rely on the underlying documentation.  I
>>wouldn't be at all surprised if the pysqlite author operated under that
>>assumption.
> 
> 
> Ok, that's certainly plausible. But it's not an excuse. The thinner the
> documentation, the greater the emphasis should be made to point
> the reader to a more adequate source. Simply listing the Sqlite home
> page at the bottom of the page is hardly good enough. It should be
> explicitly stated in bold letters that the reader should go read the
> Sqlite FAQ because it radically differs from *real* databases and
> provide a seperate link to it in the body of the documentation.
> 
Whoa, there! This isn't commercial software we are talking about. While 
I appreciate the need to continually better Python's documentation, the 
"should" implies a moral imperative that the (volunteer) developers are 
unlikely to find compelling.
> 
>>That the Python developers didn't pick up on the issue is not
>>surprising.  I'm not sure how many of them are (py)sqlite users, probably
>>relatively few.
> 
> 
> I would be surprised if they had never used ANY database. A little
> thing like dynamic field typing will simply make it impossible to
> migrate your Sqlite data to a *real* database.
> 
> What I'll do is re-format my rant, suggest how *I* would do the
> documentation, fix the errors I found in the examples and send it
> off to the Python bug tracking as suggested in the manuals.
> 
> How's that as a plan?

That's the ticket. Great idea. Changes to the documentation can be 
suggested in plain ASCII, you don't have to grok the LaTeX markup.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From belred at gmail.com  Thu Sep 14 00:50:06 2006
From: belred at gmail.com (Bryan)
Date: Wed, 13 Sep 2006 21:50:06 -0700
Subject: stock quotes
In-Reply-To: <bF2Og.230637$k%3.67439@dukeread12>
References: <bF2Og.230637$k%3.67439@dukeread12>
Message-ID: <eean1v$n16$1@sea.gmane.org>

Donlingerfelt wrote:
> I would like to download stock quotes from the web, store them, do
> calculations and sort the results.  However I am fairly new and don't have a
> clue how to parse the results of a web page download.   I can get to the
> site, but do not know how to request the certain data  need.  Does anyone
> know how to do this?  I would really appreciate it.  Thanks.
> 
> 

i recently wrote a moinmoin macro which i believe does exactly what you want. 
even though you aren't writing a moinmoin macro, all the stuff you need is here.

usage: [[stock(amzn,goog,yhoo)]]

note that the string 'amzn,goog,yahoo' is passed in as the symbols variable and 
is placed as-is onto the url.  you will receive one .csv file from yahoo with 
*all* the ticker info for all symbols you requested... very cool :)  then for 
each row in the csv file, i pull out each column (data) and set a red or green 
color based on whether the stock is up or down for the day as well as providing 
a link to the yahoo finance site (finance.google.com in my latest version) when 
that symbol is clicked.  and finally return an html table with the data.

i hope this helps you.  i apologize in advance if this code doesn't come through 
the newsgroup formatted properly.



import urllib
import csv
def execute(macro, symbols):
     color = 'black'
     try:
         reader = 
csv.reader(urllib.urlopen('http://finance.yahoo.com/d/quotes.csv?s=%s&f=sl1d1t1c1ohgv&e=.csv' 
% symbols))
         data = []
         for symbol, trade, date, time, change, opened, hi, low, volume in reader:
             num = float(change)
             if num > 0:
                 color = 'green'
             elif num < 0:
                 color = 'red'
             percent = 100 * float(change) / (float(trade) - float(change))
             data.append('<tr><td><a 
href="http://finance.yahoo.com/q?s=%s">%s</a></td><td><font color="%s">%s (%s / 
%.2f%%)</font></td></tr>' % (symbol, symbol, color, trade, change, percent))
         return '<table>%s</table>' % ''.join(data)
     except:
         return '%s: Stock information unavailable' % symbols



bryan



From niels.ellegaard at gmail.com  Wed Sep 20 01:42:13 2006
From: niels.ellegaard at gmail.com (Niels L Ellegaard)
Date: 19 Sep 2006 22:42:13 -0700
Subject: ANN: Python Molecular Viewer - 1.4.3
In-Reply-To: <1158684466.692694.99300@i3g2000cwc.googlegroups.com>
References: <1158684466.692694.99300@i3g2000cwc.googlegroups.com>
Message-ID: <1158730933.033572.322120@e3g2000cwe.googlegroups.com>

sargis at ieee.org wrote:
> More information can be found on our web site at
> http://mgltools.scripps.edu

I had some trouble finding the license of the code on the webpage, but
it looks like the software is free for non-commercial use. Could I
convince you to make the license more visible? Please write it in the
FAQ and preferably also on the home page.

                Thanks in advance, and good luck with the project

                                            Niels



From amk at amk.ca  Sun Sep 17 17:30:34 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Sun, 17 Sep 2006 16:30:34 -0500
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
	<1158507849.378435.47080@d34g2000cwd.googlegroups.com>
	<mailman.207.1158509454.10491.python-list@python.org>
Message-ID: <75GdnRSl_tvnI5DYnZ2dnUVZ_qCdnZ2d@speakeasy.net>

On Sun, 17 Sep 2006 18:10:51 +0200, 
	Daniel Nogradi <nogradi at gmail.com> wrote:
> start a new one. What would be very useful though is more visible
> links on the python.org site to the activestate repository where
> appropriate. I'm not sure the pyhon.org people would want to promote
> activestate though, nevertheless it would be a great help to many.

There's no reason not to link to ActiveState... but are there RSS
feeds or some similar mechanism to get all the recipes for a
particular module?

Fredrik Lundh also proposed a way to publish examples that get linked
from the documentation <http://effbot.org/zone/idea-seealso.htm>, and
there's some code in the Python sandbox for incorporating links
(sandbox/seealso).  

However, this code isn't used at the moment because I have no idea
what to do about version controlling the links.  Do we just use the
current links whenever the HTML is generated?  Make a copy of the list
and commit them into SVN, so the links cease to be updated but are
consistent for a given version's docs?  It would be nice to figure out
what to do.

--amk


From felipe.lessa at gmail.com  Fri Sep  8 08:05:11 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Fri, 8 Sep 2006 09:05:11 -0300
Subject: Best Middle Tier Architechure?
In-Reply-To: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
References: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
Message-ID: <c2701f5c0609080505w54570b90i9a020bcc5a97074@mail.gmail.com>

2006/9/7, Butternut Squash <rxrx at yamama.com>:
> right now we are using c# and .net remoting in a way that just is not
> efficient.
>
> I want to rewrite a lot of what we do in python. I have seen XML-RPC and
> soap.  Are there other options?

It surely depends on what's going to be on the other sides. If
everything is Python, you may use Twisted.Spread. If you have to
communicate with different languages and plataforms, maybe CORBA
helps. Well, I'm sure a lot of people know more options than I do
here.

-- 
Felipe.


From frithiof.jensen at die_spammer_die.ericsson.com  Mon Sep 25 05:24:10 2006
From: frithiof.jensen at die_spammer_die.ericsson.com (Frithiof Andreas Jensen)
Date: Mon, 25 Sep 2006 11:24:10 +0200
Subject: What is the best way to "get" a web page?
References: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>
Message-ID: <ef877q$fm6$1@news.al.sw.ericsson.se>

something like:

os.popen("wget -r3 http://juicypornpics.com")

.... wget understands the peculiarities of web pages so you do have to.




From aisaac0 at verizon.net  Mon Sep 18 14:43:04 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Mon, 18 Sep 2006 18:43:04 GMT
Subject: newbie division question
Message-ID: <YMBPg.3328$uj3.1736@trnddc08>

Suppose x and y are ints in moduleA.

If I put
from __future__ import division
in moduleA then x/y will produce the truediv result.

If I put
from __future__ import division
in moduleB
and
from moduleB import *
in module A
then x/y will NOT produce the truediv result
(in moduleA).

Why?
And is there some way to avoid importing
from __future__ in module after module?

Thanks,
Alan Isaac




From johnjsal at NOSPAMgmail.com  Sat Sep 30 12:48:43 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 12:48:43 -0400
Subject: storing variable names in a list before they are used?
In-Reply-To: <hQeTg.57$1n3.320@news.tufts.edu>
References: <hQeTg.57$1n3.320@news.tufts.edu>
Message-ID: <451ea06c$0$14713$c3e8da3@news.astraweb.com>

John Salerno wrote:

> (the variables would store whatever information is entered in the text 
> boxes to the right of each label. I'm doing it this way so I can write a 
> loop to construct my GUI components).

Thanks very much for the responses guys. I actually tried something 
similar with a dictionary already, but then I discovered the obvious: I 
need them in a certain order! :)

Here is what I want to do more specifically: I am creating a single 
frame (wxPython terminology for a window) and the user will be able to 
click a "New" button which will open a new tab in that frame (using the 
wx.Notebook class). Each time a new tab is opened, it will contain a 
form to fill out, with a label widget on the left ("First Name:") and a 
text box control on the right (the underlines), like this:

First Name: ________
Last Name:  ________
Job Title:  ________
etc.
etc.



In wxPython, you can use "sizers" for layout control, and in this case 
the FlexGridSizer is ideal. You just assign the above widgets to it in 
this order: first label, first textbox, second label, second textbox, etc.

Instead of manually creating these widgets and adding all of them to the 
sizer (and having to add or delete code later in case something changes) 
I wanted to use some type of for loop to do it for me. This is easy for 
creating and adding the labels, because I need no reference for them 
later. But I will need a reference for the textboxes so I can later get 
the data that is in them.

So my original question involved finding a way to assign a variable name 
to the textboxes while they are being automatically created in a for 
loop. This seems like something that is probably done quite often and 
maybe I'm just not thinking of the proper idiom that is used.

Thanks!


From g.brandl-nospam at gmx.net  Mon Sep  4 04:53:58 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 04 Sep 2006 10:53:58 +0200
Subject: CONSTRUCT -
In-Reply-To: <1157299581.865287.225320@p79g2000cwp.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<ede27d$pi9$1@news.albasani.net>
	<1157299581.865287.225320@p79g2000cwp.googlegroups.com>
Message-ID: <edgpj6$vf1$1@news.albasani.net>

lazaridis_com wrote:
> Georg Brandl wrote:
>> lazaridis_com wrote:
>> > I would like to fulfill the following task:
>> >
>> > The construct:
>> >
>> > if __name__ == '__main__':
>> >
>> > should be changed to something like:
>> >
>> > if identifier.name == '__main__':
>> >
>> > The term "identifier" should be selected based on the meaning of the
>> > __double-underscore-enclosure__ of the entities.
> ...
> 
>> import sys
>> class _identifier:
>>     def __getattr__(self, name):
>>         return sys._getframe(1).f_globals['__%s__' % name]
>> identifier = _identifier()
> 
> ok, I understand.
> 
> this one would work with modules.
> 
> but how would look a more general solution, which would work with
> objects too?

Why can't you try to come up with something yourself? You should have
had enough exposure to the Python language by now.

Georg


From sjmachin at lexicon.net  Sun Sep 17 09:15:50 2006
From: sjmachin at lexicon.net (John Machin)
Date: 17 Sep 2006 06:15:50 -0700
Subject: matplotlib: TypeError: a float is required
In-Reply-To: <eejesq$guv$1@online.de>
References: <eejesq$guv$1@online.de>
Message-ID: <1158498950.458578.302140@i42g2000cwa.googlegroups.com>


Andi Clemens wrote:
> Hi,
>
> everytime I try to plot a bar with matplotlib I get the following error
> message:
> Traceback (most recent call last):
>    File "bar_stacked.py", line 13, in ?
>      p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
>    File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line
> 1641, in bar
>      ret =  gca().bar(*args, **kwargs)
>    File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line
> 2485, in bar
>      xerr = asarray([xerr]*nbars, Float)
>    File "/usr/lib/python2.4/site-packages/Numeric/Numeric.py", line 134,
> in asarray
>      return multiarray.array(a, typecode, copy=0, savespace=savespace)
> TypeError: a float is required
>
>
> So I guess it has something to do with Numeric.py, but I can't figure
> out what the problem is. I tried to google but found nothing...
>
> Anyone has the same problem? I can plot all kinds of graphics with
> matplotlib, but the only type I'm interested in (bars) will not work.
>
> I tried the examples coming with matplotlib, but even those don't work.
>
> Here is the example code which produces the above error:
> #!/usr/bin/env python
> # a stacked bar plot with errorbars
> from pylab import *
>
> N = 5
> menMeans   = (20, 35, 30, 35, 27)
> womenMeans = (25, 32, 34, 20, 25)
> menStd     = (2, 3, 4, 1, 2)
> womenStd   = (3, 5, 2, 3, 3)
> ind = arange(N)    # the x locations for the groups
> width = 0.35       # the width of the bars: can also be len(x) sequence
>
> p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)

Call me crazy -- I know SFA about matplotlib -- but I'd expect anything
scientific to barf if given tuples of integers to play with, and
following the docs links matplotlib > pylab > bar we find:
"""
bar(*args, **kwargs)
    BAR(left, height, width=0.8, bottom=0,
        color='b', yerr=None, xerr=None, ecolor='k', capsize=3)
    Make a bar plot with rectangles at
      left, left+width, 0, height
    left and height are Numeric arrays.
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"""

Which of us is missing what?

Cheers,
John



From tal.no.no.spam at gmail.com  Sat Sep  2 07:22:01 2006
From: tal.no.no.spam at gmail.com (Tal Einat)
Date: 2 Sep 2006 04:22:01 -0700
Subject: disgrating a list
In-Reply-To: <slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
Message-ID: <1157196121.086531.192240@b28g2000cwb.googlegroups.com>

Neil Cerutti wrote:
> On 2006-09-01, Tal Einat <tal.no.no.spam at gmail.com> wrote:
> > Tim Chase wrote:
> >> I'm not sure if '__iter__' is the right thing to be looking
> >> for, but it seems to work at least for lists, sets,
> >> dictionarys (via their keys), etc.  I would use it because at
> >> least then you know you can iterate over it
> >
> > AFAIK and as seen throughout posts on c.l.py, the best way to
> > check if something is iterable is:
> >
> > try:
> >     iter(obj)
> > except TypeError:
> >     <obj is not iterable>
> > else:
> >     <obj is iterable>
>
> That confounds me.  Of course, I'm coming from a C++, where you
> never want to throw an exception in a common case, hence the name
> 'exception'. The Python FAQ does say that raising and catching an
> exception is an expensive operation. I see that type-checking is
> good to avoid, but type-checking must be better than "abusing"
> exceptions in this way. Is the above really a popular idiom?
>
> If so, I guess I'll get used to it.
>
Such use of exceptions is surely common enough in Python to be worth
getting to know, if only in order to understand others' code.

If you had wanted to check if an object was callable, which is a more
basic functionality in Python, you would use Python's built-in function
callable(). Unfortunately there is no such function as iterable().
(perhaps there should be? ...)

Raising an exception is a relatively "expensive" operation, but not so
much that you would want to avoid it altogether... In most such cases,
such as checking whether an object is iterable, speed isn't an issue.

IMO this is far from "abuse". The iter() function's documenation
explicitly notes "If it does not support either of those protocols,
TypeError is raised." This can be viewed as one possible output of the
function, in addition to the possibility of returning an iterator. In
such a function, raising exceptions instead of returning None or other
special values (often called "return codes") is much more modular, and
IMO much more readable.

- Tal



From pavlovevidence at gmail.com  Fri Sep 22 16:27:15 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 22 Sep 2006 13:27:15 -0700
Subject: returning None instead of value: how to fix?
In-Reply-To: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
References: <1158953575.908033.150960@b28g2000cwb.googlegroups.com>
Message-ID: <1158956835.466475.162860@i42g2000cwa.googlegroups.com>


sam wrote:
> def recursive_halve(value):
>
>     if value < 1:
> 	print value
> 	return value
>     else:
>     	value = value/2
>     	print value
>     	if value < 1:
> 	    return value
>     	else:
> 	    recursive_halve(value)

Missing a return on the last line is likely your immediate problem.

You have more subtle problems, though.  First, you have needlessly
reduplicated value<1 test--the first thing recursive_halve does is to
check whether value<1, so there's no need to check whether value<1
before calling it.

Second, you have redundant branching logic.  Look at your first else
statement.  It does nothing; the else doesn't affect whether the stuff
inside it gets executed or not; it's redundant.  It's better style to
not to have such redundancy (either by omitting the else, or having a
single return point).

The following should do exactly what you want.

def recursive_halve(value):
    if value < 1:
        print value
        return value
    value = value/2
    print value
    return recursive_halve(value)


Carl Banks



From flyingisfun1217 at gmail.com  Sat Sep 30 23:24:38 2006
From: flyingisfun1217 at gmail.com (flyingisfun1217 at gmail.com)
Date: 30 Sep 2006 20:24:38 -0700
Subject: changing numbers to spellings
Message-ID: <1159673078.254161.97850@k70g2000cwa.googlegroups.com>

Hey,

Sorry to bother everybody again, but this group seems to have quite a
few knowledgeable people perusing it.

Here's my most recent problem: For a small project I am doing, I need
to change numbers into letters, for example, a person typing in the
number '3', and getting the output 'Three'. So far, I have an interface
that only collects numbers (or letters), and displays them in a text
variable label (as you can see below). Heres the code I have:

+--------------------------------+-----------------------------------+

var=StringVar()

def collect():
     var.set(entrybox.get())

spelledentry=Label(root, textvariable=var)
spelledentry.grid(row=5, column=1)

filler1=Label(root, text="                    ")
filler1.grid(row=0, column=0)

titletext=Label(root, text="NumberSpeller2")
titletext.grid(row=0, column=1)

filler2=Label(root, text="                    ")
filler2.grid(row=0, column=2)

filler3=Label(root, text="\n")
filler3.grid(row=1, column=0)

entrybox=Entry(root)
entrybox.grid(row=1, column=1, sticky=N)

enterbutton=Button(root, text="Spell!", command=collect)
enterbutton.grid(row=3, column=1, sticky=N)

filler4=Label(root, text="")
filler4.grid(row=4, column=1)

filler5=Label(root, text="")
filler5.grid(row=6, column=1)

website=Label(root, text="Visit the NS2 Website")
website.grid(row=7, column=1, sticky=S)

+-------------------------------------+----------------------------------------+

Like I explained a little before, I need to keep users from entering
any letters, and I need to have the numbers they typed in translated to
text.

Can someone explain how I could go across doing this?

Thanks!
Tanner



From kylotan at gmail.com  Fri Sep  8 04:55:55 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 8 Sep 2006 01:55:55 -0700
Subject: Javadoc style python manual?
In-Reply-To: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
Message-ID: <1157705755.474006.84410@i3g2000cwc.googlegroups.com>

xiong.xu.cn at gmail.com wrote:
> I'm new to python and I'm from the java world.
> Though I love to learn python, I'm not very comfortable with the python
> documentation.
> Because when i read jdk doc, i can see the class hierachy, class
> member, class methods etc in html docs. It's very easy for me to
> understand the Java language.
> But in python, i find it kind of inconvient.

My advice is to get used to it... the Python docs are not arranged in
the hierarchical fashion because there isn't any real hierarchy to
speak of. Python does not rely heavily on inheritance like Java does.
Instead, it is used in just a few places, more like the C++ standard
library than the Java library.

I agree that the Python docs aren't quite as effective as reference
material due to the lack of simple function and method lists though. I
don't know if there's a solution to that anywhere.

-- 
Ben Sizer



From syedamjad_a at yahoo.com  Fri Sep 22 13:25:35 2006
From: syedamjad_a at yahoo.com (CSUIDL PROGRAMMEr)
Date: 22 Sep 2006 10:25:35 -0700
Subject: Replacing line  in a text  file
Message-ID: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>

Folks
I am trying to read a file
This file has a line containing string  'disable = yes'

I want to change this line to 'disable = no'

The concern here is that , i plan to take into account the white spaces
also.

I tried copying all file int list and then tried to manipulate that
list

But the search is not working

Any answer

thanks



From john106henry at hotmail.com  Fri Sep 29 12:29:58 2006
From: john106henry at hotmail.com (John Henry)
Date: 29 Sep 2006 09:29:58 -0700
Subject: windev vs python SOS
In-Reply-To: <1159547006.941109.237430@m73g2000cwd.googlegroups.com>
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<1159528038.548533.304250@c28g2000cwb.googlegroups.com>
	<451d15cf$0$23901$636a55ce@news.free.fr>
	<1159547006.941109.237430@m73g2000cwd.googlegroups.com>
Message-ID: <1159547398.729325.56210@b28g2000cwb.googlegroups.com>

Why are they all look so gloomy?  I don't see a single smile on their
faces.

:=)


aaaWin... at gmail.com wrote:
> Hi,
>
> Bruno Desthuilliers a ?crit :
> > I've never met a programmer that "loved" Windev.
>
> I have met some here (I'm the guy with a mustache-just kidding but
> actually I was there).
>
> http://www.pcsoft.fr/pcsoft/tdftech/2006/images/Paris/07-IMG_5853.jpg
>
> WinDev is widely used in France and that's a thing because a lot of
> french programmers think that english tools "have to be better".
> 
> --
> Pat



From nomail2me at charter.net  Thu Sep  7 04:42:37 2006
From: nomail2me at charter.net (Jim Britain)
Date: Thu, 07 Sep 2006 04:42:37 -0400
Subject: string search and modification
References: <209uf25ufjhf817ngsbuompvrggl7tf2ln@4ax.com>
	<7x1wqopwvk.fsf@ruckus.brouhaha.com>
Message-ID: <2omvf2h8sfmdkq7oq6m98p0me4l0uo8ag6@4ax.com>

On 06 Sep 2006 13:23:43 -0700, Paul Rubin
<http://phr.cx at NOSPAM.invalid> wrote:

>Jim Britain <nomail2me at charter.net> writes:
>> I would like to match [123.123.123.123] (including the qualifying
>> brackets), but be able to simply return the contents, without the
>> brackets.
>
>
> >>> p=r'\[((\d{1,3}\.){3}\d{1,3})\]'
> >>> m = 'dsl-kk-dynamic-013.38.22.125.touchtelindia.net [125.22.38.13] (may be'
> >>> g=re.search(p,m)
> >>> g.group(1)
>'125.22.38.13'
>
>g.group(1) matches the stuff in the first set of parens, which excludes
>the square brackets.

Final integration:

    def identifyHost(self):
        for line in self.fileContents:
            if re.search("throttling", line.lower()):
                  p=r'\[((\d{1,3}\.){3}\d{1,3})\]'
                  ip=re.search(p,line)
                  if ip.group(1) in self.ignoreList:
                        continue
                  if not ip.group(1) in self.banList:
                         self.banList.append(ip.group(1))


Thanks for the help.
Jim
-- 


From 71david at libero.it  Thu Sep 14 10:27:23 2006
From: 71david at libero.it (David)
Date: Thu, 14 Sep 2006 16:27:23 +0200
Subject: How can I get the function's caller?
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net><mailman.4.1158129274.10491.python-list@python.org>
	<92erlo9dz4me.2fm9p7wv7uve.dlg@40tude.net>
	<mailman.82.1158233870.10491.python-list@python.org>
Message-ID: <1a6ap390ql9x2$.idjclcfonhjp.dlg@40tude.net>

Il Thu, 14 Sep 2006 13:37:24 +0200, Fredrik Lundh ha scritto:

[...]
> in Python.

Thanks to all of you!

David


From glenn at tangelosoftware.net  Fri Sep 29 02:23:23 2006
From: glenn at tangelosoftware.net (glenn)
Date: 28 Sep 2006 23:23:23 -0700
Subject: analyzing removable media
In-Reply-To: <1159510609.968438.111540@e3g2000cwe.googlegroups.com>
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
	<1159510609.968438.111540@e3g2000cwe.googlegroups.com>
Message-ID: <1159511003.768019.145680@e3g2000cwe.googlegroups.com>

Hi  Jay
pls excuse top post - Im actually doing this project in linux, but am
wanting it to be cross platform. I definitley have to cater for win32
also.  I was hoping that burried in sys or os or that there'd be some x
platform  module that did all that stuff for me

thnks for reply though
glenn
Jay wrote:
> Well, in linux you can get a lot of info about where a file is based
> upon where it lies in the file system.  For example, if the folder the
> file is located in resides in the /media or /mnt directories, then the
> file is, barring a few rare circumstances, located upon a removable
> medium of some sort.  Once you get the name of that directory that is
> right below /media or /mnt, then you can cross check the name in
> /etc/fstab file.
>
> However, the contents of your post lead me to believe that you're
> working in a win32 environment.  That's a bit trickier.  Things aren't
> so simple.  You could probably grab similar information from the full
> path itself.  For example, just getting the drive letter that the file
> resides on could tell you a lot.  Now, where you'd cross check that is
> more of a mystery to me.  I'd guess the registry?  For an easier way of
> accessing the registry, I believe that the wrapper pywin32 may be of
> interest to you.  It shouldn't be that hard considering that you'd only
> be getting some information, not setting anything.
>
> If by chance we're talking about MacOS, I'm of almost no help.  In the
> case of MacOS X, it has a unix core, so I'd imagine that the method I
> described for linux could probably be adapted.
>
> Jay
>
> glenn wrote:
> > Hi
> > can anyone tell me how given a directory or file path, I can
> > pythonically  tell if that item is on 'removable media', or sometype of
> > vfs, the label of the media (or volume) and perhaps any other details
> > about the media itself?
> > thanks
> > Glenn



From fredrik at pythonware.com  Fri Sep 29 11:26:29 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 17:26:29 +0200
Subject: Scoping bugs in an embedded Python interpreter - Wizards please
In-Reply-To: <1159542176.977456.258590@i42g2000cwa.googlegroups.com>
References: <1159542176.977456.258590@i42g2000cwa.googlegroups.com>
Message-ID: <efjdv4$mb5$1@sea.gmane.org>

morris.slutsky at gmail.com wrote:

> But .... I'm suffering from serious scoping bugs.  I hope someone here
> can help me with them.
> 
> First of all, if I type in something like;
> 
> def f(x):
>      if x==1:
>           return x
>      else:
>           return x * f(x-1)
> 
> and then go
> print f(5)
> 
> I get an error.  It says 'global name 'f' is not defined'.  So
> recursion won't work because of some odd scoping bug.

looks like the globals are all messed up.  it would help to see the 
actual C code.

</F>



From Jim.Hugunin at microsoft.com  Tue Sep  5 16:27:12 2006
From: Jim.Hugunin at microsoft.com (Jim Hugunin)
Date: Tue, 5 Sep 2006 13:27:12 -0700
Subject: [ANN] IronPython 1.0 released today!
Message-ID: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>

I'm extremely happy to announce that we have released IronPython 1.0 today!
 http://www.codeplex.com/IronPython

I started work on IronPython almost 3 years ago.  My initial motivation for the project was to understand all of the reports that I read on the web claiming that the Common Language Runtime (CLR) was a terrible platform for Python and other dynamic languages.  I was surprised to read these reports because I knew that the JVM was an acceptable platform for these languages.  About 9 years ago I'd built an implementation of Python that ran on the JVM originally called JPython and later shortened to Jython.  This implementation ran a little slower than the native C-based implementation of Python (CPython), but it was easily fast enough and stable enough for production use - testified to by the large number of Java projects that incorporate Jython today.

I wanted to understand how Microsoft could have screwed up so badly that the CLR was a worse platform for dynamic languages than the JVM.  My plan was to take a couple of weeks to build a prototype implementation of Python on the CLR and then to use that work to write a short pithy article called, "Why the CLR is a terrible platform for dynamic languages".  My plans quickly changed as I worked on the prototype, because I found that Python could run extremely well on the CLR - in many cases noticeably faster than the C-based implementation.  For the standard pystone benchmark, IronPython on the CLR was about 1.7x faster than the C-based implementation.

The more time I spent working on IronPython and with the CLR, the more excited I became about its potential to finally deliver on the vision of a single common platform for a broad range of languages.  At that same time, I was invited to come out to Microsoft to present IronPython and to talk with members of the CLR team about technical issues that I was running into.  I had a great time that day working through these issues with a group of really smart people who all had a deep understanding of virtual machines and language implementation.  After much reflection, I decided to join the CLR team at Microsoft where I could work with the platform to make it an even better target for dynamic languages and be able to have interesting technical discussions like that every day.

The first few months at Microsoft were a challenge as I learned what was involved in working at a large company.  However, once the initial hurdle was over I started experiencing the things that motivated me to come here in the first place.  The team working on dynamic languages in general and IronPython in particular began to grow and I got to have those great technical discussions again about both how to make IronPython as good as it could be and how to make the CLR an even better platform.  We began to take advantage of the great new features for dynamic languages already shipping in .NET 2.0 such as DynamicMethods, blindingly fast delegates and a new generics system that was seamlessly integrated with the existing reflection infrastructure.

We were also able to release IronPython publicly from Microsoft with a BSD-style license.  In the agile spirit of the project, we put out a new release of IronPython once every three weeks (on average) over the course of the project.  This helped us connect well with our daring early adopters and receive and incorporate their feedback to make IronPython better.  We've had countless excellent discussions on the mailing list on everything from supporting value types to calling overloaded methods.  Without the drive and input of our users, IronPython would be a much weaker project.

IronPython is about bringing together two worlds.  The key value in IronPython is that it is both a true implementation of Python and is seamlessly integrated with the .NET platform.  Most features were easy and natural choices where the language and the platform fit together with almost no work.  However, there were challenges from the obvious cases like exception type hierarchies to the somewhat esoteric challenges concerning different methods on strings. We spent long days and sometimes weeks looking for the best answers to these challenging problems and in the end I think that we have stayed true to both Python and .NET.

To drive our Python compatibility, we run a large portion of the standard Python regression test suite in addition to a large custom test suite we added that runs IronPython and CPython side-by-side to test for identical behavior whenever possible.  Despite all of this work, there will still be differences between IronPython 1.0 and CPython.  The most obvious difference is that IronPython is missing a number of standard C-based extension modules so things like "import bsddb" will fail.  We maintain a detailed list of differences between the two implementations and aim to reduce the size of this list in every release.

IronPython has also striven for deep integration with the CLR.  For the implementation this is a great thing as it lets us take advantage of highly-tuned components developed for other languages such as the just-in-time compiler, garbage collector, debugging support, reflection, dynamic loading and more.  This integration is also valuable to IronPython developers as it lets them easily use any and all libraries built for .NET from their Python code.

This is the 1.0 release of IronPython.  It's more complete and well tested than any other 1.0 product I have personally released in my career.  However, like any other software product it's not perfect.  You can search for known issues and let us know about any new ones that you find in our public bug database.  We're continuing to work on IronPython and we want your input on how to make 1.1 and future releases even better.

It's been an exciting journey for me to see IronPython go from a rough prototype playing around with some ideas to a solid 1.0 release.  This never could have happened without all the people who've contributed to this project along the way.  My thanks go out to all the users who braved our early releases and passed along their problems and suggestions.  My thanks also go out to the amazing group of people here at Microsoft who've come to join this project and drive it to this quality 1.0 release.

Shipping IronPython 1.0 isn't the end of the road, but rather the beginning.  Not only will we continue to drive IronPython forward but we're also looking at the bigger picture to make all dynamic languages deeply integrated with the .NET platform and with technologies and products built on top of it.  I'm excited about how far we've come, but even more excited by what the future holds!

Thanks - Jim Hugunin (for the IronPython Team)


From harbingerofpeace at post.com  Sun Sep 24 12:00:24 2006
From: harbingerofpeace at post.com (Pete)
Date: 24 Sep 2006 09:00:24 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159081153.409155.85050@k70g2000cwa.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
	<1159064765.214210.300630@k70g2000cwa.googlegroups.com>
	<15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
	<1159074660.273157.141760@k70g2000cwa.googlegroups.com>
	<1159081153.409155.85050@k70g2000cwa.googlegroups.com>
Message-ID: <1159113624.782507.84580@k70g2000cwa.googlegroups.com>

> > > > Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
> > > > [GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
> > > > Type "help", "copyright", "credits" or "license" for more information.
> > > > >>> import httplib
> > > > >>> conn = httplib.HTTPConnection("www.python.org")
> > > > >>> conn.request("GET", "/index.html")
> > > > Hello World.
> > >
> > >       Off-hand -- I'd suggest you do a search of your computer for any
> > > occurrence of
> > >       httplib.py
> > >       httplib.pyc
> > >       httplib.pyo
> > > on the odd chance that you are picking up some corrupted version...
> >
>
> Don't search; just open the lid and read the label that's tied around
> the culprit's neck; example:
>
> | >>> import httplib
> | >>> httplib.__file__
> | 'c:\\python24\\lib\\httplib.pyc'
>
> If you want to see where it finds *everything* that's imported, run
> Python with the -v arg.
> If you want to see where it looks for each module imported, use -vv
> (that's vee vee, not dubya).
>
> HTH,
> John
>
> HTH,
> John

Thanks to all for your assistance. Not sure what the problem was, but
the problem no longer exists. In an attempt to track down the
environmental variables I rebooted the system a few times and the
example code I was working with does indeed work on my system.

After upgrading python I exited my interactive session and jumped back
in to an interactive session which displayed the new python version
number. Experienced problems. Now, no problems. Not sure what made the
problem(s) go away... Very odd...
--
Pete



From george.sakkis at gmail.com  Thu Sep  7 10:08:56 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 7 Sep 2006 07:08:56 -0700
Subject: Refactor a buffered class...
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>
	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>
	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>
	<mailman.98.1157578665.5279.python-list@python.org>
	<1157599243.076703.180740@p79g2000cwp.googlegroups.com>
	<mailman.110.1157604877.5279.python-list@python.org>
Message-ID: <1157638136.370020.289690@b28g2000cwb.googlegroups.com>

Michael Spencer wrote:
> George Sakkis wrote:
> > Michael Spencer wrote:
> >
> >> Here's a small update to the generator that allows optional handling of the head
> >> and the tail:
> >>
> >> def chunker(s, chunk_size=3, sentry=".", keep_first = False, keep_last = False):
> >>      buffer=[]
> ...
> >
> > And here's a (probably) more efficient version, using a deque as a
> > buffer:
> >
>
> Perhaps the deque-based solution is more efficient under some conditions, but
> it's significantly slower for all the cases I tested:

First off, if you're going to profile something, better use the
standard timeit module rather than a quick, dirty and most likely buggy
handmade function. From "Dive into python": "The most important thing
you need to know about optimizing Python code is that you shouldn't
write your own timing function.". As it turns out, none of chunk_size,
words_per_group and word_length are taken into account in your tests;
they all have their default values. By the way, word_length is
irrelevant since the input is already a sequence, not a big string to
be split.

Second, the output of the two functions is different, so you're not
comparing apples to apples:
>>> s = " this .  is a . test to . check if it . works . well . it looks . like ."
>>> for c in chunkerMS(s.split(), keep_last=True, keep_first=True): print c
...
['this', '.']
['this', '.', 'is', 'a', '.']
['this', '.', 'is', 'a', '.', 'test', 'to', '.']
['is', 'a', '.', 'test', 'to', '.', 'check', 'if', 'it', '.']
['test', 'to', '.', 'check', 'if', 'it', '.', 'works', '.']
['check', 'if', 'it', '.', 'works', '.', 'well', '.']
['works', '.', 'well', '.', 'it', 'looks', '.']
['well', '.', 'it', 'looks', '.', 'like', '.']
['it', 'looks', '.', 'like', '.']
['like', '.']
>>> for c in chunkerGS(s.split(), keep_last=True, keep_first=True): print c
...
['this']
['this', 'is a']
['this', 'is a', 'test to']
['is a', 'test to', 'check if it']
['test to', 'check if it', 'works']
['check if it', 'works', 'well']
['works', 'well', 'it looks']
['well', 'it looks', 'like']
['it looks', 'like']
['like']

Third, and most important for the measured difference, is that the
performance hit in my function came from joining the words of each
group (['check', 'if', 'it'] -> 'check if it') every time it is
yielded. If the groups are left unjoined as in Michael's version, the
results are quite different:

* chunk_size=3
chunkerGS: 0.98 seconds
chunkerMS: 1.04 seconds
* chunk_size=30
chunkerGS: 0.98 seconds
chunkerMS: 1.17 seconds
* chunk_size=300
chunkerGS: 0.98 seconds
chunkerMS: 2.44 seconds

As expected, the deque solution is not affected by chunk_size. Here is
the full test:

# chunkers.py
from itertools import islice
from collections import deque

def chunkerMS(s, chunk_size=3, sentry=".", keep_first = False,
keep_last = False):
     buffer=[]
     sentry_count = 0
     for item in s:
         buffer.append(item)
         if item == sentry:
             sentry_count += 1
             if sentry_count < chunk_size:
                 if keep_first:
                     yield buffer
             else:
                 yield buffer
                 del buffer[:buffer.index(sentry)+1]
     if keep_last:
         while buffer:
             yield buffer
             del buffer[:buffer.index(sentry)+1]

def chunkerGS(seq, sentry='.', chunk_size=3, keep_first=False,
keep_last=False):
    buf = deque()
    iterchunks = itersplit(seq,sentry)
    for chunk in islice(iterchunks, chunk_size-1):
        buf.append(chunk)
        if keep_first:
            yield buf
    for chunk in iterchunks:
        buf.append(chunk)
        yield buf
        buf.popleft()
    if keep_last:
        while buf:
            yield buf
            buf.popleft()

def itersplit(seq, sentry='.'):
    # split the iterable `seq` on each `sentry`
    buf = []
    for x in seq:
        if x != sentry:
            buf.append(x)
        else:
            yield buf
            buf = []
    if buf:
        yield buf

def make_seq(groups=1000, words_per_group=3, sentry='.'):
     group = ['w']*words_per_group
     group.append(sentry)
     return group*groups


if __name__ == '__main__':
    import timeit
    for chunk_size in 3,30,300:
        print "* chunk_size=%d" % chunk_size
        for func in chunkerGS,chunkerMS:
            name = func.__name__
            t = timeit.Timer(
                "for p in %s(s, chunk_size=%d, keep_last=True,"
                            "keep_first=True):pass" %
(name,chunk_size),
                "from chunkers import make_seq,chunkerGS,chunkerMS;"
                "s=make_seq(groups=5000, words_per_group=500)")
            print "%s: %.2f seconds" % (name, min(t.repeat(3,1)))



From stuart at stuartbishop.net  Wed Sep 27 23:14:20 2006
From: stuart at stuartbishop.net (Stuart Bishop)
Date: Thu, 28 Sep 2006 10:14:20 +0700
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
Message-ID: <451B3E0C.4050600@stuartbishop.net>

Jon Ribbens wrote:
> In article <ef8oqr$9pt$1 at news.albasani.net>, Georg Brandl wrote:
>>> I'm sorry, that's not good enough. How, precisely, would it break
>>> "existing code"? Can you come up with an example, or even an
>>> explanation of how it *could* break existing code?
>> Is that so hard to see? If cgi.escape replaced "'" with an entity reference,
>> code that expects it not to do so would break.
> 
> Sorry, that's still not good enough. Why would any code expect such a
> thing?

Plenty of test suites for a start. A non-backwards compatible change such as
being suggested can create a huge maintenance burden on lots of people.
People also use that function to escape non-HTML too - if they are using it
as documented, and it produces the correct results for them, great. Note
that the documentation doesn't say that input has to be HTML, nor that
output must be used as HTML. It just describes the transformation that it
does clearly and unambiguously and can quite happily be used for generating
 quoted text for use in, say, XML documents. Also, because Python has a
conservative policy on backwards incompatible changes, you are protected
from some wanker going and changing the HTML safe mappings arbitrarily, say
using numerical entity references instead of &gt;, &lt; and &amp;. This
policy allows large software projects to be developed in Python and
maintained with less pain than if they were written in languages with a less
conservative policy.

If you want to improve the situation, join the WEB-SIG to help design new
and improved APIs so that the existing ones like the ancient cgi module can
be deprecated. Or maybe just some helpers can be added to the existing
htmllib module? There are better approaches than making non-backwards
compatible changes to functions people have been relying on since Python 1.5.


-- 
Stuart Bishop <stuart at stuartbishop.net>
http://www.stuartbishop.net/

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From ilias at lazaridis.com  Fri Sep 22 14:26:39 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 22 Sep 2006 11:26:39 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <mailman.338.1158769000.10491.python-list@python.org>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158767379.579861.91080@k70g2000cwa.googlegroups.com>
	<mailman.338.1158769000.10491.python-list@python.org>
Message-ID: <1158949599.835201.288220@e3g2000cwe.googlegroups.com>

Steve Holden wrote:
> Michele Simionato wrote:
> > (I don't believe I am responding to a notorious troll ...)
> >
> Believe it. You are. Ain't life a bitch? :-)
>
> > One (bad) solution is to write in your sitecustomize.py the following:
> >
> > $ echo /usr/lib/python/sitecustomize.py
> > import __builtin__
> >
> > class Object(object):
> >     def debug(self):
> >         print 'some debug info'
> >
> > __builtin__.object = Object
> >
> > then you can do for instance
> >
> >
> >>>>class C(object): pass
> >>>>C().debug()
> >
> > some debug info
> >
> > All class inheriting from object will have the additional debug method.
>
> But sadly not the built-in types like int and str, which is what our
> trollish friend wants to do (for some reason best known to himself).
>

Followup thread:

[Watching this topic]  	CONSTRUCT - New/Old Style Classes,
build-in/extension types
http://groups.google.com/group/comp.lang.python/browse_frm/thread/493d71f3dd09939b



From python.list at tim.thechases.com  Fri Sep 29 11:01:56 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 29 Sep 2006 10:01:56 -0500
Subject: How to iterate through a sequence, grabbing subsequences?
In-Reply-To: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
References: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>
Message-ID: <451D3564.5050909@tim.thechases.com>

> def chunkify(s, chunksize):
>     "Yield sequence s in chunks of size chunksize."
>     for i in range(0, len(s), chunksize):
>         yield s[i:i+chunksize]
> 
> I wrote this because I need to take a string of a really, really long
> length and process 4000 bytes at a time.
> 
> Is there a better solution?

My first thought, if len(s) is truely huge, would be to replace 
range() with xrange() so that you don't build a list of 
len(s)/chunksize elements, just to throw it away.

However, I think that's about as good as this common idiom gets.

I've seen variants which will always yield portions of chunksize 
in size, padding it out to the proper length, but that's a 
specification issue that you don't seem to want/need.

-tkc






From ptmcg at austin.rr._bogus_.com  Wed Sep 27 09:01:29 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Wed, 27 Sep 2006 13:01:29 GMT
Subject: a query on sorting
References: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>
	<mailman.796.1159357863.10491.python-list@python.org>
Message-ID: <JCuSg.380$5o5.260@tornado.texas.rr.com>


"Steve Holden" <steve at holdenweb.com> wrote in message 
news:mailman.796.1159357863.10491.python-list at python.org...
<snip>

  >>> [x for x in enumerate(a)]
[(0, 9), (1, 4), (2, 3), (3, 5), (4, 2), (5, 6), (6, 7), (7, 1), (8, 2)]


Just curious, Steve, but why do this list comprehension when:

list(enumerate(a))

works just as well?

In the interests of beating a dead horse into the ground (metaphor-mixing?), 
I looked at using map to one-line the OP's request, and found an interesting 
inconsistency.

I tried using map(reversed, list(enumerate(a))), but got back a list of 
iterators.  To create the list of tuples, I have to call the tuple 
constructor on each one, as in:

map(tuple,map(reversed,list(enumerate(a))))

However, sorted returns a list, not a listsortediterator.  Why the 
difference in these two builtins?

I guess you can beat a dead horse into the ground, but you can't make him 
drink.

-- Paul




From mfenner at gmail.com  Tue Sep 12 10:39:19 2006
From: mfenner at gmail.com (Mark E. Fenner)
Date: Tue, 12 Sep 2006 14:39:19 GMT
Subject: From bags to default dicts
Message-ID: <rEzNg.1688$FS.844@trnddc04>

Hello all,

I was curious if anyone has transitioned some code from using Raymond
Hettinger's bag class:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/259174

to using 2.5's collections.defaultdict.  Any pitfalls to watch out for?  It
seems we should be able to do slightly better than creating a bag class
that has a defaultdict as a member.  So, inheriting from defaultdict and
defining some of the nice utility methods that Hettinger's class defines
seems like the way to go.  Comments?

Regards,
Mark


From satyaupadhya at yahoo.co.in  Wed Sep 27 05:20:30 2006
From: satyaupadhya at yahoo.co.in (Satya Upadhya)
Date: Wed, 27 Sep 2006 10:20:30 +0100 (BST)
Subject: a query on sorting
Message-ID: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>


Dear Friends,
I am having a few issues with respect to sorting using python. I am using
Python 2.4.3 Win32 (IDLE 1.1.3).

>>> x = [2,6,4]
>>> x.sort()
>>> x
[2, 4, 6]
>>> x = [2,6,4]
>>> y = []
>>> y = x.sort()
>>> y
>>> print y
None

So the problem essentially is that i am unable to store the sorted
elements of list x into an empty list y in a straightforward manner. I can
get around this, of course, using the following:
>>> x = [2,6,4]
>>> x.sort()
>>> x
[2, 4, 6]
>>> y = []
>>> for i in x:
        y.append(i)


>>> y
[2, 4, 6]

But this seems a little less succinct then one would expect from python.

Also, consider the sorting of the indices of a sorted list. Consider the
following code:
>>> x = [2,6,4]
>>> import operator
>>> sortedindices = sorted(range(len(x)), key = x.__getitem__)
>>> print sortedindices
[0, 2, 1]
>>> x.sort()
>>> x
[2, 4, 6]
>>>

x (x = [2,6,4] originally) is the original list, and its indices are
0,1,2. If you sort x, then x becomes [2,4,6] and the the list of the
sorted indices becomes [0,2,1] since the 4 (which originally corresponds
to index 2) has now shifted to a position corresponding to index 1 and
likewise for element 6.

The equivalent matlab code for getting the sorted indices is much simpler:
if x is a list (array) of values, then just write:

[y,i] = sort(x);
and y will be a list containing the sorted elements of x and i will be a
list containing the sorted indices.

Am i missing a trick here?

Thanking you,
Satya


 				
---------------------------------
 Find out what India is talking about on  - Yahoo! Answers India 
 Send FREE SMS to your friend's mobile from Yahoo! Messenger Version 8. Get it NOW
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From paul at boddie.org.uk  Tue Sep 12 06:54:48 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 12 Sep 2006 03:54:48 -0700
Subject: egg and modpython
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
	<1157969582.029638.136340@i42g2000cwa.googlegroups.com>
	<45066f21$0$28612$636a55ce@news.free.fr>
Message-ID: <1158058488.037703.263280@e63g2000cwd.googlegroups.com>

Bruno Desthuilliers wrote:
>
> eggs are the Python's equivalent to Java's JAR, not a RPM-like. I said
> it was not an egg-specific issue (which is not totally accurate) because
> it mostly have to do with loading dynamic libs (.so, .dll etc) from
> zipped files.

True. It is notable that various Java application servers (to consider
the questioner's original problem) do unpack .war files, which probably
share more properties with .egg files than .jar files do. Indeed, I
don't recall a single occasion where I've ever needed to unpack .jar
files to have them successfully used by Java programs.

> > Debian packages even compile the bytecode
> > files to ensure that nothing tries (and fails) to write them to
> > privileged locations afterwards.
>
> So does eggs. But once again, eggs are *not* a general-purpose package
> management system like apt, RPM, emerge etc...

However, it seems to me that the setuptools and EasyInstall ecosystem,
whilst a remarkable achievement, has grown in scope sufficiently to
confuse such comparisons. Some .egg files are more than just being like
.jar files, as I note above, and with additional dependency information
included (as seems to be encouraged), one is suddenly required to deal
with a system that resembles a Python-centric package and dependency
management system rolled into one, operating in parallel with whatever
native package manager and whatever dependency management system
(they're typically separate things) that may be in operation.

Paul



From v.vayer at gmail.com  Wed Sep 20 13:07:07 2006
From: v.vayer at gmail.com (zloster)
Date: 20 Sep 2006 10:07:07 -0700
Subject: Leaks in subprocess.Popen
Message-ID: <1158772027.221441.244710@k70g2000cwa.googlegroups.com>

I'm using Python 2.4.3 for Win32.
I was trying to run a few child processes simultaneously in separate
threads and get their STDOUT, but the program was leaking memory and I
found that it was because of subprocess operating in another thread.
The following code works fine, but I get a leaking handle every second.
You can see it in the task manager if you choose to see the <handle
count> column. Does anybody have a solution? Please help!

import subprocess, time, thread

def comm(command):
	run = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
	out, err = run.communicate()
	print out

while 1:
	thread.start_new_thread(comm, ("dir",))
	time.sleep(1)



From gdamjan at gmail.com  Sun Sep 17 14:34:07 2006
From: gdamjan at gmail.com (Damjan)
Date: Sun, 17 Sep 2006 20:34:07 +0200
Subject: Is there a way to find IP address?
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
	<mailman.41.1158163545.10491.python-list@python.org>
Message-ID: <450d9496$0$75037$14726298@news.sunsite.dk>

>> Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
>> If a user  is behind a proxy, I will log  proxy's IP address only.
>> Is there a way how to find a real IP user's address?
> 
> os.environ["HTTP_X_FORWARDED_FOR"]
> 
> (but that can easily be spoofed, and is mostly meaningless if the user
> uses local IP addresses at the other side of the proxy, so you should
> use it with care)

Yep, you should only use "HTTP_X_FORWARDED_FOR" if you trust the proxy and
you check that the request is indeed coming from it 
(if environ["REMOTE_ADDR"] in proxy_list).


-- 
damjan


From hpsekhon at googlemail.com  Tue Sep  5 12:29:35 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Tue, 05 Sep 2006 17:29:35 +0100
Subject: are there any lib for receive hotmail ?
In-Reply-To: <44FDA035.3030203@tim.thechases.com>
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>	<ONXKg.8550$o42.6314@tornado.texas.rr.com>	<1157467698.407373.273750@d34g2000cwd.googlegroups.com>	<4m5kf4F4hppiU1@uni-berlin.de>
	<44FDA035.3030203@tim.thechases.com>
Message-ID: <44FDA5EF.2040007@googlemail.com>

Tim Chase wrote:
>> And receiving hotmail (or any outher webmail) using scraping
>> techniques is a daunting task, to say the least - you should
>> forget about that IMHO.
>>     
>
> There's a perl project called "gotmail" that will do the scraping 
> to dump in a local mailbox file (I don't remember whether it's MH 
> or mbox format).  You can snag it at
>
> http://gotmail.sf.net
>
> Thus, there's evidence that Hotmail can be scraped, but it seems 
> they have a never-ending battle against Hotmail, trying to keep 
> up with changes.
>
> I don't know of any Python projects doing the same sort of thing. 
>   It might not be too hard to port the Perl project over to 
> Python, but one would be an extra level removed from scraping 
> Hotmail, playing catchup not only with Hotmail, but then porting 
> the latest fixes from Gotmail.
>
> There are a couple other Hotmail-to-mbox scrapers I've heard of, 
> but haven't tried.
>
> -tkc
>
>
>
>
>   

I know this isn't technically helping, but why use hotmail when gmail is 
so much better and gives you pop access? Even old yahoo gives you pop 
access to your mailbox....


Hari Sekhon


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From grante at visi.com  Fri Sep 15 10:37:42 2006
From: grante at visi.com (Grant Edwards)
Date: Fri, 15 Sep 2006 14:37:42 -0000
Subject: UDP packets to PC behind NAT
References: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
Message-ID: <12glelm8a37tp63@corp.supernews.com>

On 2006-09-15, Janto Dreijer <jantod at gmail.com> wrote:

> I have a server with a static "public" IP and a client behind a NAT. I
> would like to send UDP packets from the server to the client. So what I
> need to do is open up a "hole" in the NAT and let the server know the
> target IP and port of the client where it can send its packets.
>
> Now I have read somewhere that you can have TCP and UDP running on the
> same port.

True.

> Not sure if this is true.

It is.

> Would it be a reasonable solution to initiate a TCP connection
> from the client to the server and somehow (?) let the server
> figure out how the client is connecting? And then send UDP to
> client over the same (IP, port)?

I doubt that will work unless the firewall has been
specifically designed to recognize that pattern of activity and
allow the incoming UDP packets.  I don't think most firewall
have default rules that allow UDP packets to tunnel back along
a TCP connection.

-- 
Grant Edwards                   grante             Yow!  Clear the
                                  at               laundromat!! This
                               visi.com            whirl-o-matic just had a
                                                   nuclear meltdown!!


From osv at javad.com  Fri Sep 15 11:34:05 2006
From: osv at javad.com (Sergei Organov)
Date: Fri, 15 Sep 2006 19:34:05 +0400
Subject: Outbound port on sockets
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<4mt1ajF7gs0hU1@uni-berlin.de>
	<U1kOg.1070$TV3.294@newssvr21.news.prodigy.com>
	<4mv51sF7t5lmU1@uni-berlin.de> <12glesm56ghquc4@corp.supernews.com>
Message-ID: <eeeh5k$t3e$1@sea.gmane.org>

Grant Edwards <grante at visi.com> writes:

> On 2006-09-15, Diez B. Roggisch <deets at nospam.web.de> wrote:
>
>>>>> Is it possible to specify which port to use as the outbound port on a
>>>>> connection? 
>>> [...]
>>>>> Specifically, I'm trying to write an FTP host, and I'm trying to
>>>>> implement the PORT command. 
>>>>
>>>> AFAIK you neither can't do that nor need it.
>>> 
>>> It's not the issue here, but to specify the outgoing port
>>> call bind(('', portnum)) before connect().
>>
>> I wasn't aware of that. Cool.
>
> It's an interesting thing to know, but I've been doing TCP
> stuff for many years and never run across a situation where
> it's something I needed to do.  If somebody in this thread
> actually does need to do it, I'd be curious bout why...

Well, one of ftpd implementations I have here (C code from RTEMS) does
this:

      /* anchor socket to avoid multi-homing problems */
      data_source = info->ctrl_addr;
      data_source.sin_port = htons(20); /* ftp-data port */
      if(bind(s, (struct sockaddr *)&data_source, sizeof(data_source)) < 0)
        ERROR;
      ...
      if(connect(s,
          (struct sockaddr *)&info->def_addr,
          sizeof(struct sockaddr_in)) < 0
      )
        ERROR;

I've no idea what "multi-homing problems" are, but maybe it gives you
some hint?

-- Sergei.



From onurb at xiludom.gro  Mon Sep 11 09:12:34 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 11 Sep 2006 15:12:34 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157932363.904338.181180@p79g2000cwp.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
	<1157752108.456624.146270@i3g2000cwc.googlegroups.com>
	<gcsMg.9006$bM.550@newsread4.news.pas.earthlink.net>
	<z9ZMg.9635$bM.7954@newsread4.news.pas.earthlink.net>
	<1157932363.904338.181180@p79g2000cwp.googlegroups.com>
Message-ID: <450560c2$0$22489$626a54ce@news.free.fr>

mensanator at aol.com wrote:
(snip)
> Are you saying that MySQL is goofy? ;-)
> 
This is an understatement.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From george.sakkis at gmail.com  Mon Sep 11 00:51:55 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 10 Sep 2006 21:51:55 -0700
Subject: CPython keeps on getting faster
References: <1157945690.334367.10170@h48g2000cwc.googlegroups.com>
Message-ID: <1157950315.561781.91480@p79g2000cwp.googlegroups.com>

John Machin wrote:

> Here are some data points that illustrate the improvement in speed
> since 2.1 for one (probably atypical) application: rummaging through a
> 120MB Microsoft Excel spreadsheet file using the xlrd package.
>
> The time shown is the number of seconds required to open the file and
> parse out all data content -- heavy usage of struct.unpack(). The only
> code that is conditional on the Python version is where it defines
> things to stop 2.1 barfing, like a dummy class called "object" .
>
> 2.1.3: 117
> 2.2.3:  95
> 2.3.5:  75
> 2.4.3:  62
> 2.5c1:  49
>
> Other info:
> xlrd version: 0.6.0a2 -- coming soon to a cheese shop near you :-)
> OS: Windows XP SP2
> CPU:
>     PROCESSOR_IDENTIFIER=x86 Family 15 Model 4 Stepping 1, GenuineIntel
>     HumanSpeak: Intel dual-core Pentium (R) 4, nominal speed is
> 3.20Ghz
> Memory: 1 Gb (enough to avoid swapping)
>
> Well done, core devs!
>
> FWIW, IronPython 1.0.60816 does it in 132 seconds. For avoidance of
> doubt (and flak!) I'd like to clarify that IMHO the mere existence of
> IronPython merits plaudits. I do however trust that it will similarly
> become faster over time. And nobody mentioned the possibility of an
> 188% increase in memory usage, which may well be partially explained by
> this:
>
> DOS prompt>\ironpython\ipy
> IronPython 1.0.60816 on .NET 2.0.50727.42
> Copyright (c) Microsoft Corporation. All rights reserved.
> >>> str is unicode
> True

This might also explain in part the relative slowness you noticed.
OTOH, IronPython on Mono is around 20% faster than cPython 2.4 and
2.5c1 running pystone on my laptop (~50K pystones/sec for IronPython,
~41K  pystones/sec for cPython; not significant difference between 2.4
and 2.5c1). Just adding a datapoint from a completely different
environment:

CPU: Pentium-M 730 (1.6GHz)
Memory: 512 MB
OS: Ubuntu Dapper (6.06 LTS Dapper Drake)
Python2.4: 2.4.3 (#2, Apr 27 2006, 14:43:58) [GCC 4.0.3 (Ubuntu
4.0.3-1ubuntu5)]
Python2.5: 2.5c1 (r25c1:51305, Aug 18 2006, 19:18:03) [GCC 4.0.3
(Ubuntu 4.0.3-1ubuntu5)]
IronPython: 1.0.2444 on .NET 2.0.50727.42
Mono JIT compiler version 1.1.17
        TLS:           normal
        GC:            Included Boehm (with typed GC)
        SIGSEGV:       normal
        Disabled:      none

George



From ldo at geek-central.gen.new_zealand  Mon Sep 25 06:53:40 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 22:53:40 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ef8cdq$fui$2@lust.ihug.co.nz>

In message <slrnehfah2.foq.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Duncan Booth enlightened us with:
>> I think his point was that any '%' characters inside name act like
>> wildcards whereas his version looked for literal percents.
> 
> But of course.
> 
>> This could be an argument for having a utility function to escape
>> the wildcards for this sort of situation, but certainly not an
>> argument for his proposed QuoteSQL.
> 
> Indeed. An escaping function should be small and not do all kinds of
> escaping for different situations at once.

Even when the two situations are related?


From pavlovevidence at gmail.com  Mon Sep  4 23:47:51 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 4 Sep 2006 20:47:51 -0700
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
In-Reply-To: <44fcb7fb$0$31422$626a54ce@news.free.fr>
References: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>
	<44fcb7fb$0$31422$626a54ce@news.free.fr>
Message-ID: <1157428071.396162.168500@74g2000cwt.googlegroups.com>

Bruno Desthuilliers wrote:
> In python, assignement is a statement, not an expression, so there's no
> way you could write 'if obj = None' by mistake (-> syntax error). So
> this style is unpythonic. Also, None is a singleton, and identity test
> is way faster than equality test.

Playing Devil's advocate here: if you were to write "x!=None", then x's
__eq__ method is invoked, which might not account for the possibility
that the other operand is None.

However, if you write "None!=x", then None's __eq__ method is invoked,
which accounts for any given type.


Carl Banks



From gagsl-py at yahoo.com.ar  Thu Sep 28 00:13:43 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 01:13:43 -0300
Subject: Fwd: Recursive Tree in Python
In-Reply-To: <20060927163531.67981.qmail@web25401.mail.ukl.yahoo.com>
References: <20060927163531.67981.qmail@web25401.mail.ukl.yahoo.com>
Message-ID: <7.0.1.0.0.20060928011208.0393a8d8@yahoo.com.ar>

At Wednesday 27/9/2006 13:35, Fred Kitoogo wrote:

>I wish to create a recursive tree and test in Python for combining 
>classifiers, below are the two Algorithms (Training & Testing):-
>Can somebody please help?

Sure. See <http://www.catb.org/~esr/faqs/smart-questions.html#homework>



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From fredrik at pythonware.com  Wed Sep 13 04:30:16 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 10:30:16 +0200
Subject: Are Python's reserved words reserved in places they dont need
	to   be?
In-Reply-To: <slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>	<1158114810.972096.154160@p79g2000cwp.googlegroups.com>	<slrnegfaka.f0c.apardon@rcpc42.vub.ac.be>	<7x4pvckyyu.fsf@ruckus.brouhaha.com>
	<slrnegff4k.f0c.apardon@rcpc42.vub.ac.be>
Message-ID: <ee8fio$a4g$1@sea.gmane.org>

Antoon Pardon wrote:

> One place where I would use such a feature is in a unittest
> package.  I think being able to write self.assert or self.raise
> looks better than having to append an underscore.

patch here:

http://mail.python.org/pipermail/python-list/2001-June/047996.html

</F>



From larry.bates at websafe.com  Thu Sep  7 19:05:06 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 07 Sep 2006 18:05:06 -0500
Subject: should urlparse return user and pass in separate components?
In-Reply-To: <1157662588.273505.316230@h48g2000cwc.googlegroups.com>
References: <1157662588.273505.316230@h48g2000cwc.googlegroups.com>
Message-ID: <4500A5A2.7090105@websafe.com>

Oops, sorry missed something converting from a method to a function:

Here is a function that I wrote to do that.  It doesn't do
exactly what you want, but might save you some time.

def spliturl(url):
    '''
    spliturl - method to split composite url into its component parts
               ftp://username:password at www.domain.com/dav

    gets split into:

    scheme.............ftp
    domain.............www.domain.com
    username...........username
    password...........password
    rootfolder........./dav
    port...............None

    returns list of 6 strings/None containing above listed variables
    '''
    parts=urlparse.urlsplit(url)
    scheme=parts[0]
    usernameandpassword, domain=urllib.splituser(parts[1])
    username, password=urllib.splitpasswd(usernameandpassword)
    rootfolder, port=urllib.splitport(parts[2])
    if port is not None: port=int(port)
    return [scheme, domain, username, password, rootfolder, port]

-Larry Bates

metaperl wrote:
> The urlparse with Python 2.4.3 includes the user and pass in the site
> aspect of its parse:
> 
>>>> scheme, site, path, parms, query, fid = urlparse.urlparse("http://bill:james at docs.python.org/lib/module-urlparse.html")
> 
>>>> site
> 'bill:james at docs.python.org'
> 
> 
> I personally would prefer that it be broken down a bit further. What
> are existing opinions on this?
> 


From george.sakkis at gmail.com  Wed Sep 27 17:41:36 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 27 Sep 2006 14:41:36 -0700
Subject: pythonol
References: <pan.2006.09.27.17.52.35.815812@dogstar.ukfsn.org>
Message-ID: <1159393296.231439.174990@i42g2000cwa.googlegroups.com>

John Martin wrote:

> 'pythonol' is a program for learning spanish. I think it's a really great
> program. Unfortunately it ceased to work when I moved to SuSE 10 and 10.1 .
> The author makes it clear on her website that she has devoted all the time
> she's prepared to and won't maintain it. I think it's a shame as it's a
> valuable educational tool. Sadly I know bugger all about python, this is
> the error I get when running it.
> ---------------------------------------------------------------
> /usr/share/Pythonol/sqlite/__init__.py:1: RuntimeWarning: Python C API version
> mismatch for module _sqlite: This Python has API version 1012, module
> _sqlite has version 1011.
>   import _sqlite
> ./pythonolui.py:137: DeprecationWarning: use gtk.UIManager
>   itemf=ItemFactory(MenuBar, "<main>", ag)
> ./pythonolui.py:392: DeprecationWarning: use gtk.ComboBoxEntry
>   conjcombo=Combo()
> ./pythonolui.py:398: Warning: unsupported arithmetic operation for flags
> type
>   conjtable.attach(conjcombo,1,2,1,2,(EXPAND+FILL),(0),0,0)
> Traceback (most recent call last):
>   File "./pythonolui.py", line 1945, in ?
>     run()
>   File "./pythonolui.py", line 1941, in run
>     pythonolwin()
>   File "./pythonolui.py", line 398, in __init__
>     conjtable.attach(conjcombo,1,2,1,2,(EXPAND+FILL),(0),0,0)
> TypeError: flag values must be strings, ints, longs, or tuples
> ------------------------------------------------------------------
> Does anything stand out which might be fixable?

Search and replace all "EXPAND+FILL" with "EXPAND|FILL" (vertical bar
instead of plus sign). This solves the specific error, though I've no
idea what else may be broken.

George



From chris at simplistix.co.uk  Mon Sep 11 16:44:17 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 21:44:17 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <ee4cam$g9a$03$1@news.t-online.com>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>
	<ee4cam$g9a$03$1@news.t-online.com>
Message-ID: <4505CAA1.9090102@simplistix.co.uk>

Peter Otten wrote:
> Chris Withers wrote:
> 
>> At worst, and most likely based on my past experience of (c)StringIO
>> being used to accumulate output, it won't make a jot of difference...
> 
> What past experience?
> 
>>>> StringIO.StringIO().write(unichr(128))
>>>> cStringIO.StringIO().write(unichr(128))
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> UnicodeEncodeError: 'ascii' codec can't encode character u'\x80' in position
> 0: ordinal not in range(128)

Okay, more out of desperation than anything else, lets try this:

from email.Charset import Charset,QP
from email.MIMEText import MIMEText
from StringIO import StringIO
from email import Generator,Message
Generator.StringIO = Message.StringIO = StringIO
charset = Charset('utf-8')
charset.body_encoding = QP
msg = MIMEText(u'Some text with chars that need encoding: \xa3','plain')
msg.set_charset(charset)
print repr(msg.as_string())
u'MIME-Version: 1.0\nContent-Transfer-Encoding: 8bit\nContent-Type: 
text/plain; charset="utf-8"\n\nSome text with chars that need encoding: 
\xa3'

Yay! No unicode error, but also no use:

   File "c:\python24\lib\smtplib.py", line 692, in sendmail
     (code,resp) = self.data(msg)
   File "c:\python24\lib\smtplib.py", line 489, in data
     self.send(q)
   File "c:\python24\lib\smtplib.py", line 316, in send
     self.sock.sendall(str)
   File "<string>", line 1, in sendall
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in 
position 297: ordinal not in range(128)

The other variant I've tried is:

from email.Charset import Charset,QP
from email.MIMEText import MIMEText
charset = Charset('utf-8')
charset.body_encoding = QP
msg = MIMEText('','plain',)
msg.set_charset(charset)
msg.set_payload(charset.body_encode(u'Some text with chars that need 
encoding: \xa3'))
print msg.as_string()

Which is sort of okay:

MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="utf-8"

Some text with chars that need encoding: =A3

...except it gets the transfer encoding wrong, which means Thunderbird 
shows =A3 instead of the pound sign that it should :-(

...this is down to a pretty lame bit of code in Encoders.py which 
basically checks for a unicode error *sigh*

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From steve at holdenweb.com  Mon Sep 11 12:25:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 17:25:22 +0100
Subject: Behaviour of classes (tired of writing too much)
In-Reply-To: <1157990040.000384.311320@m73g2000cwd.googlegroups.com>
References: <1157990040.000384.311320@m73g2000cwd.googlegroups.com>
Message-ID: <ee42k9$qcm$1@sea.gmane.org>

mpn at mic.dtu.dk wrote:
> How do I catch any reference to an instance of a class, i.e., I want to
> run some code as soon as an instance of a class is used in any way.
> (and I don't want to define all of __add__, __ge__ etc etc etc etc etc)
> 
> The reason for the question is that I want to simplify the Message
> Passing Interface (MPI) calls. I find it irritating that I have to
> start a non-blocking send/receive and then check that the data has
> arrived. Why not automagically check/wait for the data when it is
> needed?
> 
> The second part that I also need to make that idea work is the ability
> to change the instance to the received data, i.e., self=received data,
> and then launch the original reference.
> 
> So I guess that the code I want to write is:
> 
> class MPI_tmp:
>        # temporary object that changes ITSELF into another object when
> called in any way
>        def __on_any_call__(self):
>                self=newobject()
>                self.__run_the_anycall__()
> 
> which probably doesn't work :-)
> 
> Greatful for any ideas / Magnus
> 
Maybe it could make a damned fine cup of coffee as well ;-) ?

That's a pretty tall order, and mutating self isn't as simple as you 
think. However you *can* change an instance's __class__ attribute 
dynamically, which might be a way to get where you want. Not sure about 
the "trapping all accesses" bit, though. __getattr__() could give you 
access to undefined attributes.

For new_style classes you can implement __getattribute__() to trap *any* 
attribute access. This would be somewhat slow, but might be acceptable 
if you were then changing the instance's class to something that 
*didn't* implement __getattribute__().

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From george.sakkis at gmail.com  Tue Sep 26 11:21:28 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 26 Sep 2006 08:21:28 -0700
Subject: ultra newbie question (don't laugh)
References: <TjaSg.26$1n3.125@news.tufts.edu>
Message-ID: <1159284088.601244.6500@e3g2000cwe.googlegroups.com>

John Salerno wrote:

> So you see, what I'm asking for is very basic help, sort of along the
> lines of "what things do I need to consider before I even begin this?"
> Is OOP necessary here? Would utility functions work just as well for
> simply writing the information to a file?

To start with your last question, yes, they probably would, *IF* all
you need to do is take data from the user (through a GUI, command line,
etc.) and store them in some persistent state (text file, pickle, db,
etc.). In practice, chances are you'll need to do something more with
the data; I mean, what's the point in just storing data without using
them somehow ? Using the data is the core of an application, so the
question you should be able to answer beforehand is "what do I want to
do with all these data?". Compute statistics ? Print reports ? Create a
social network type of app ? All of the above ? You get the point.

After you have some good (or even rough) idea of what you want to do
with the data, the answer to "Is OOP necessary here?" would be
"strictly speaking, no, OOP is never necessary, but it's pretty often a
good idea". I mean, you can code the whole thing in plain old C, with
global functions and variables, and people have been doing this for
ages, but why build a fire from wood when there are zippos? In short,
OOP comes handy when:
a. you want to couple data with behavior (methods), AND
b. you have many instances of the same "kind(s)" around, interacting
with each other (deliberately using "kind" here to avoid starting a
"class" vs "type" theoretical discussion). If there's only one instance
of some "kind", in python it is usually better to have a module instead
of a singleton class (since modules are builtin singletons).

> Perhaps I should just take some kind of programming intro class! I read
> all these Python books, but when it comes time to write something
> non-trivial, I get stuck almost immediately with all the possibilities.

Or, if you're comfortable studying on your own, you could start with a
book or two that focus on software design and architecture, rather than
language details and small programming recipes. I can't think of any
specific title to suggest off the top of my head but I'm sure you'll
get some good suggestions from others if you ask here.

George



From chris at simplistix.co.uk  Tue Sep 12 05:21:02 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Tue, 12 Sep 2006 10:21:02 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <45066B11.9040903@mxm.dk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>	<ee4cam$g9a$03$1@news.t-online.com>	<4505CAA1.9090102@simplistix.co.uk>	<4505D782.3010105@simplistix.co.uk>
	<mailman.299.1158015822.5279.python-list@python.org>
	<45066B11.9040903@mxm.dk>
Message-ID: <45067BFE.9010006@simplistix.co.uk>

Max M wrote:
>  From the docs:
> 
> """
> The payload is either a string in the case of simple message objects or 
> a list of Message objects for MIME container documents (e.g. multipart/* 
> and message/rfc822)
> """

Where'd you find that? I must have missed it in my digging :-S

> Message objects are always encoded strings. I don't remember seeing that 
> it should be possible to use a unicode string as a message.

Yes, I guess I just find that surprising in today's "everything should 
be unicode" world.

> The charset passed in set_payload(pl ,charset) is the charset the the 
> string *is* encoded in. Not the charset it *should* be encoded in.

Indeed, although there's still the bug that while set_payload can accept 
a Charset instance for its _charset parameter, the __init__ method for 
MIMENonMultipart cannot.

Incidentally, here's the class I finally ended up with:

from email.Charset import Charset
from email.MIMEText import MIMEText as OriginalMIMEText
from email.MIMENonMultipart import MIMENonMultipart

class MTText(OriginalMIMEText):

     def __init__(self, _text, _subtype='plain', _charset='us-ascii'):
         if not isinstance(_charset,Charset):
             _charset = Charset(_charset)
         if isinstance(_text,unicode):
             _text = _text.encode(_charset.input_charset)
         MIMENonMultipart.__init__(self, 'text', _subtype,
                                   **{'charset': _charset.input_charset})
         self.set_payload(_text, _charset)

cheers,

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk



From metaperl at gmail.com  Tue Sep 12 19:39:38 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 16:39:38 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <4mnvrhF72ppeU1@uni-berlin.de>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<4mnvrhF72ppeU1@uni-berlin.de>
Message-ID: <1158104377.822787.185730@b28g2000cwb.googlegroups.com>


Diez B. Roggisch wrote:
> metaperl schrieb:
> >   -->  python -i
> >>>> class = "algebra"
> >   File "<stdin>", line 1
> >     class = "algebra"
> >           ^
> > SyntaxError: invalid syntax
> >
> >
> > Why isn' t the parser smart enough to see that class followed by an

>  the few reserved words won't matter usually.

woe be unto the ORMs who try to map database columns to Python
attributes.



From matt at tplus1.com  Fri Sep 29 10:35:54 2006
From: matt at tplus1.com (Matthew Wilson)
Date: Fri, 29 Sep 2006 14:35:54 GMT
Subject: How to iterate through a sequence, grabbing subsequences?
Message-ID: <slrnehqbqb.6ka.matt@mwilson.umlcoop.net>

I wrote a function that I suspect may already exist as a python builtin,
but I can't find it:

def chunkify(s, chunksize):
    "Yield sequence s in chunks of size chunksize."
    for i in range(0, len(s), chunksize):
        yield s[i:i+chunksize]

I wrote this because I need to take a string of a really, really long
length and process 4000 bytes at a time.

Is there a better solution?

Matt

-- 
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles


From johnjsal at NOSPAMgmail.com  Tue Sep 19 15:17:21 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 19:17:21 GMT
Subject: new string method in 2.5 (partition)
In-Reply-To: <1158692796.366877.275040@b28g2000cwb.googlegroups.com>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<1158692796.366877.275040@b28g2000cwb.googlegroups.com>
Message-ID: <5nXPg.7$1n3.69@news.tufts.edu>

richard.charts at gmail.com wrote:
> I'm confused.
> What's the difference between this and string.split?

 >>> s = 'hello, world'

 >>> s.split(',')
['hello', ' world']

 >>> s.partition(',')
('hello', ',', ' world')


split returns a list of the substrings on either side of the specified 
argument.

partition returns a tuple of the substring on the left of the argument, 
the argument itself, and the substring on the right. rpartition reads 
from right to left.


But you raise a good point. Notice this:

 >>> s = 'hello, world, how are you'

 >>> s.split(',')
['hello', ' world', ' how are you']

 >>> s.partition(',')
('hello', ',', ' world, how are you')

split will return all substrings. partition (and rpartition) only return 
the substrings before and after the first occurrence of the argument.


From claudio.grondi at freenet.de  Thu Sep  7 17:04:58 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 23:04:58 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <edq1hn$jiq$1@newsreader2.netcologne.de>

Omar wrote:
> I'd love the perfect editor that would be:
> 
> a) free
> 
> b) enable me to drag and drop code snippets from a sort of browser into
> the code
> 
> c) can run programs right from within
> 
> d) can edit
>       - PYTHON
>       - Javascript
>       - HTML
>       - actionscript (since I'm also learning flash)
> 
> e) easy to learn
> 
> suggestions?
> 
Welcome to the group of users of UliPad  :)

   http://wiki.woodpecker.org.cn/moin/UliPad

a) ok
b) by double click (code snippets)
c) ok
e) maybe not that easy because of lack of full documentation, but sure 
worth to try, anyway.

Claudio Grondi


From paddy3118 at netscape.net  Fri Sep  8 00:01:35 2006
From: paddy3118 at netscape.net (Paddy)
Date: 7 Sep 2006 21:01:35 -0700
Subject: Negation in regular expressions
In-Reply-To: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
References: <1157674322.607665.123840@b28g2000cwb.googlegroups.com>
Message-ID: <1157688095.796720.270380@m73g2000cwd.googlegroups.com>


George Sakkis wrote:
> It's always striked me as odd that you can express negation of a single
> character in regexps, but not any more complex expression. Is there a
> general way around this shortcoming ? Here's an example to illustrate a
> use case:
>
> >>> import re
> # split with '@' as delimiter
> >>> [g.group() for g in re.finditer('[^@]+', 'This @ is a @ test ')]
> ['This ', ' is a ', ' test ']
>
> Is it possible to use finditer to split the string if the delimiter was
> more than one char long (say 'XYZ') ? [yes, I'm aware of re.split, but
> that's not the point; this is just an example. Besides re.split returns
> a list, not an iterator]
>
> George

If your wiling to use groups then the following will split

>>> [g.group(1) for g in re.finditer(r'(.+?)(?:@#|$)', 'This @# is a @# test ')]
['This ', ' is a ', ' test ']

- Paddy.



From johnjsal at NOSPAMgmail.com  Tue Sep 26 09:56:03 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 26 Sep 2006 13:56:03 GMT
Subject: ultra newbie question (don't laugh)
Message-ID: <TjaSg.26$1n3.125@news.tufts.edu>

Ok, I've decided to make a little project for myself which involves 
storing employee information in an XML file. I'm doing this partly to 
experiment with working with XML. The blocks in the file will look 
something like this:

<researcher id="salerjo01">
   <first_name>John</first_name>
   <last_name>Salerno</last_name>
   <birth_country>United States</birth_country>
   <birth_state>Texas</birth_state>
   <birth_city>Houston</birth_city>
   #etc.......
<researcher>

I also plan to make a GUI frontend with wxPython for entering the 
records. This will be fairly easy, but not as fun as writing the logic. 
For now I've decided to focus just on writing the logic, and not worry 
about the GUI yet.

So this is what I came up with so far, then I sat staring at the screen 
wondering how to proceed:

class LabXMLWriter(object):

     def write_name(self, first, last, given=''):

Suddenly I realized I just have no idea how to start thinking about what 
I need to do. My first instinct was to use a class, as above, but then I 
wondered if that was even necessary, since all I need to do is get 
information from a user and write it to a file. Do I really need that 
information stored in an object?

Then I wondered if I needed an __init__ method, and what could go in it? 
Or should I just make separate methods for each bit of information to 
write to the file (i.e., name, birth location, address, phone number, 
etc.). I thought maybe I could create the ID in the __init__ method 
(salerjo01), but to do that I need the name first. I could do this:

def __init__(self, first_name, last_name, given_name=''):
     # code to initialize name and create ID

But then I wondered if this detracts from the work that the class 
methods would do later.

So you see, what I'm asking for is very basic help, sort of along the 
lines of "what things do I need to consider before I even begin this?" 
Is OOP necessary here? Would utility functions work just as well for 
simply writing the information to a file?

Perhaps I should just take some kind of programming intro class! I read 
all these Python books, but when it comes time to write something 
non-trivial, I get stuck almost immediately with all the possibilities.

Thanks,
John


From ldo at geek-central.gen.new_zealand  Mon Sep 25 07:03:28 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 23:03:28 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ef8d06$fui$5@lust.ihug.co.nz>

In message <slrnehfah2.foq.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Duncan Booth enlightened us with:
>> I think his point was that any '%' characters inside name act like
>> wildcards whereas his version looked for literal percents.
> 
> But of course.
> 
>> This could be an argument for having a utility function to escape
>> the wildcards for this sort of situation, but certainly not an
>> argument for his proposed QuoteSQL.
> 
> Indeed. An escaping function should be small and not do all kinds of
> escaping for different situations at once.

Look at it this way: there is _no_ case where you need escaping of wildcards
without also escaping other specials.


From Maria.Reinhammar at accalon.com  Fri Sep 29 07:59:41 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 29 Sep 2006 04:59:41 -0700
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <mailman.801.1159372327.10491.python-list@python.org>
References: <mailman.801.1159372327.10491.python-list@python.org>
Message-ID: <1159531181.314800.224180@k70g2000cwa.googlegroups.com>

A very brutal but simple and effective method is to bind() to a socket
on localhost eg (127.0.0.1, 4711), listen() but never accept().
Any other process trying to to bind() on the same port will fail..
When the process dies, the port is released automatically, pending som
timedelay..

But this assumes you have an execution environment where this is
acceptable. A sysadmin may have objections ;o)



From hgk at et.uni-magdeburg.de  Fri Sep 22 02:36:47 2006
From: hgk at et.uni-magdeburg.de (Hans Georg Krauthaeuser)
Date: Fri, 22 Sep 2006 08:36:47 +0200
Subject: Is it possible to save a running program and reload next time ?
In-Reply-To: <mailman.444.1158905950.10491.python-list@python.org>
References: <mailman.386.1158824225.10491.python-list@python.org>	<FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>	<mailman.412.1158845232.10491.python-list@python.org>	<eeu8b9$108$1@fuerst.cs.uni-magdeburg.de>
	<mailman.444.1158905950.10491.python-list@python.org>
Message-ID: <ef009v$c25$1@fuerst.cs.uni-magdeburg.de>

fdu.xiaojf at gmail.com wrote:
> Hans Georg Krauthaeuser wrote:
>> fdu.xiaojf at gmail.com wrote:
>>  
>>> Can objects be saved and reloaded by "Pickle"  ?  I have tried but no
>>> success.
>>>
>>>     
>> Yes, that's the intended use of pickle/cPickle. There are examples in
>> the docs:
>>
>> http://docs.python.org/lib/module-pickle.html
>>
>> What have you tried and what didn't work?
>>
>> Hans Georg
>>   
> My program is a genetic algorithm based program, so I thought I just
> need to save a generation object of the population and reload it later
> then my program could continue. But after I saved a generation object
> from within python using cPickle and reload it from another program, it
> said that some class object couldn't be found. Now I realized that a
> program cannot be suspended and reloaded by just simply dumping and
> loading using cPickle/Pickle.
> 
> I will try stackless python later.
> 
> Thanks a lot .
> 
> Regards,
> 
> xiaojf
> 
I use pickle to periodically save measured data for measurements that
take several days to finish. Actually, I save a class instance with the
data, the measurement methods and additional informations what method
was called and with what parameters. If the measurement crashes due to
some reasons, I recreate the class instance from the pickle file, call
the appropriate method with the saved parameters. Then, the method has
to look what data is already there and will continue to measure the rest.

I have no idea whether that will help you in your situation.

Anyway, I wish you all the best.

Hans Georg


From tony.bedford at gmail.com  Tue Sep 19 13:56:01 2006
From: tony.bedford at gmail.com (codefire)
Date: 19 Sep 2006 10:56:01 -0700
Subject: Curious issue with simple code
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
Message-ID: <1158688561.267994.231680@i42g2000cwa.googlegroups.com>

Ah of course, isfile(f) can only return true if it can find f! :)

I'm going to investigate those other functions too :)

Thanks a lot guys!
Tony



From joel.sjoo at gmail.com  Wed Sep  6 03:51:12 2006
From: joel.sjoo at gmail.com (joel.sjoo at gmail.com)
Date: 6 Sep 2006 00:51:12 -0700
Subject: Import a textfile to MS SQL with python
Message-ID: <1157529072.409252.87110@i42g2000cwa.googlegroups.com>

I'm a dba for SQL server and I Will import a textfile to SQL. For
example I use a file with 3 columns. ID, Name and Surname and the
columns are tab separated. I don't know much about programming.
Anyway, I use this code below. It works, but it will not split the
columns. I have tried to change the argumnts in str(alllines[]) Some of
the columns can include many characters and some not. For exampel names
can be Bo or Lars-Ture.

I be glad if some can help me with this.

Regar Joel

import pymssql
import string,re

myconn =
pymssql.connect(host='lisa',user='sa',password='AGpu83!#',database='junk')
mycursor = myconn.cursor()

inpfile=open('c:\\temp\\test.txt','r')
for alllines in inpfile.read().split('\n'):
	stmt="insert into python (id, namn, efternamn) values ('%s', '%s',
'%s')" %(str(alllines[0]),str(alllines[2:10]),str(alllines[3:10]))

mycursor.execute(stmt)
	print stmt
inpfile.close()
myconn.commit()
myconn.close()



From kschutte at csail.mit.edu  Sat Sep  2 19:09:31 2006
From: kschutte at csail.mit.edu (Ken Schutte)
Date: Sat, 02 Sep 2006 19:09:31 -0400
Subject: Setting "value" of an int-derived class
Message-ID: <44FA0F2B.2080500@csail.mit.edu>

Lets say I want an integer class that lets you attach arbitrary 
attributes.  I can simply do:

class foo(int): pass

x = foo(5)
x.text = "okay"
print x, x.text   # prints "5 okay"

So, that's good.  But, how can I change the value of x from 5 to 
something else, without creating a new instance?

I suppose I could create a function that creates a new "foo" and copies 
its attributes, but is there a more direct way?  Is the value "5" stored 
in some special attribute I can just directly modify?

thanks,
Ken


From half.italian at gmail.com  Tue Sep 19 00:53:00 2006
From: half.italian at gmail.com (half.italian at gmail.com)
Date: 18 Sep 2006 21:53:00 -0700
Subject: Recursing for Progress Bar
In-Reply-To: <mailman.254.1158635527.10491.python-list@python.org>
References: <1158633528.072727.212760@h48g2000cwc.googlegroups.com>
	<mailman.254.1158635527.10491.python-list@python.org>
Message-ID: <1158641580.771584.290660@h48g2000cwc.googlegroups.com>

Makes perfect sense. Sometimes it takes being whacked to see it the
right way.

Thanks!

Ben Finney wrote:
> "half.italian at gmail.com" <half.italian at gmail.com> writes:
>
> > Is there a way to get around recursion limits?  Help!
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> >       def incrementProgress(self, window, workorder):
> >               #...
> > 		time.sleep(.1)
> > 		self.incrementProgress(window, workorder)
>
> You don't show a complete working example, so it's hard to know the
> context of this.
>
> What is the purpose of this function? Why is it performing these last
> two lines at all?
>
> Surely this function should be called by an *external* loop of the
> actual processing, with no recursion, and no enforced delay.
>
>     import time
>
>     class ProgressBar(object):
>         """ Display of progress as a horizontal bar """
>
>         update_frequency = 0.1
>
>         def __init__(self, window):
>             self.window = window
>             self._prev_increment_time = 0
>
>         def increment(self, workorder):
>             """ Increment the progress display """
>             # ... code to unconditionally update the display
>             self._prev_update_time = time.time()
>
>         def update(self, workorder):
>             """ Update the progress if necessary """
>             time_since_update = time.time() - self._prev_update_time
>             if time_since_update >= self.update_frequency:
>                 self.increment(workorder)
>
>     window = however_you_make_a_window()
>     bar = ProgressBar(window)
>
>     for foo in iterator_of_foos:
>         workorder = do_the_processing(foo)
>         bar.update(workorder)
>
> --
>  \     "Buy not what you want, but what you need; what you do not need |
>   `\           is expensive at a penny."  -- Cato, 234-149 BC, Relique |
> _o__)                                                                  |
> Ben Finney



From gagsl-py at yahoo.com.ar  Wed Sep 27 23:24:55 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 00:24:55 -0300
Subject: Battlefield Weapon Popularity Trend
In-Reply-To: <efdk3v$2ia$1@mlucom4.urz.uni-halle.de>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<efd9g0$sn5$1@mlucom4.urz.uni-halle.de>
	<mailman.784.1159348105.10491.python-list@python.org>
	<efdk3v$2ia$1@mlucom4.urz.uni-halle.de>
Message-ID: <7.0.1.0.0.20060928002135.037ab470@yahoo.com.ar>

At Wednesday 27/9/2006 07:30, Mirco Wahab wrote:

> >> When the Samurai of medieval Japan were confronted
> >> with new 'battlefield language', e.g. early Shotguns,
> >> they resisted because one could push any peasant
> >
> > shouldn't this be "they [the Samurai] did not resist"?
>
>The "resisted" believing all the buzz,
>e.g.: "armies made of dudes with guns" ...

 From the name I guess Ramon speaks Spanish; "resistir" in Spanish 
has a similar meaning, but not exactly the same, as "to resist"



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From wildemar at freakmail.de  Thu Sep 21 08:51:18 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 14:51:18 +0200
Subject: Can I inherit member variables?
In-Reply-To: <45128244$0$641$636a55ce@news.free.fr>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>	<eetnu9$gj7$1@online.de>	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>	<mailman.400.1158835802.10491.python-list@python.org>
	<45128244$0$641$636a55ce@news.free.fr>
Message-ID: <45128AC6.2040204@freakmail.de>

Bruno Desthuilliers wrote:
> Gabriel Genellina wrote:
>> When you construct an object instance, it is of a certain type from that
>> precise moment, and you can't change that afterwards.
> 
> Err... Actually, in Python, you can. It's even a no-brainer.

Oh yeah, let's confuse the newbie, shall we :)

The art of teaching lies in what you *don't* tell the teachee in the 
first run.
But factually, you're right. In the course of this OO lesson, however: 
ssshhhhhhhh!

;)
wildemar



From fuzzyman at gmail.com  Tue Sep 26 18:21:12 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 26 Sep 2006 15:21:12 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <1159309272.719041.177970@m73g2000cwd.googlegroups.com>


John Salerno wrote:
> It's a nice thought that a person can earn a living programming with
> Python, which is fun enough to use just for its own sake. But for
> someone like me (i.e. no programming experience) it's always a little
> disheartening to see that most (if not all) job descriptions that ask
> for Python still require some C/C++ or other language knowledge. I
> suppose this isn't an issue if you studied CS in college, because you
> would have been exposed to many languages.
>
> But what if you are an expert Python program and have zero clue about
> other languages? Can you still earn a living that way, or do most/all
> companies require multiple language proficiency?
>

When I started at Resolver Python was *almost* my only language
experience.

Ten years previously I had dabbled a bit with assembly language and
various flavours of basic. Whilst doing web stuff I dabbled with
Javascript, and I've also played around with a very little C.

I have no degree having dropped out of university.

Almost all my experience was teaching myself Python in two and a half
years of playing with it in my spare time. I learned enough in that
time to impress Resolver sufficiently to offer me a job (with about
thirty or so other applicants).

I now use a fair bit of C# at Resolver (which is ok), but I'm not what
you'd call 'proficient' in it. I'm still still monlingual really.

One of the things we've done at Resolver is use the PLY toolkit to
write a fairly extensive language parser (no compiler, just the parser
and a rewriter), and I think I've read widely enough to understand a
fair bit about programming language theory. I'm certainly going to
learn more - but it has almost all come through Python.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> (I suppose this isn't exactly a Python problem, either. I'm sure even
> companies that don't use Python still use multiple languages. Maybe it
> isn't a good idea to focus entirely on a single language, depending on
> the job at hand.)



From martin at v.loewis.de  Tue Sep 19 14:34:07 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 19 Sep 2006 20:34:07 +0200
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <mailman.266.1158668255.10491.python-list@python.org>
References: <mailman.266.1158668255.10491.python-list@python.org>
Message-ID: <4510381F.7040804@v.loewis.de>

Nico Grubert schrieb:
> Is there anything special I have to care about or is installing Python
> on a 64 Bit OS just as easy as installing it on a 32-Bit OS?

Despite what everybody else said: most likely, special care is
necessary. However, nobody probably knows what precisely you need
to be aware of.

Several changes have been made to Python 2.4 and 2.5 to support
AMD64-Linux better, and not all of these changes have been
incorporated into Python 2.3, as this software is no longer
maintained.

My advise is just to try building it, run the test suite, and
see whether it passes. If it fails to compile or pass the
test suite, post a message with the specific problem - hopefully,
somebody will remember how it was fixed.

As others have said: you should really try to use the python 2.4
that comes with the operating system. Can you share the reason why
you have to use Python 2.3?

Regards,
Martin


From thorsten at thorstenkampe.de  Mon Sep 25 16:25:45 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Mon, 25 Sep 2006 21:25:45 +0100
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
Message-ID: <MPG.1f824ba4ccb5f49989687@news.individual.de>

* John Machin (24 Sep 2006 15:32:20 -0700)
>Antoine De Groote wrote:
>> is there a python equivalent for the ruby %w operator?
>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>
>
>| >>> "a b c".split()
>| ['a', 'b', 'c']
>
>... appears to match your single example.

Something wrong with "list('abc')"? Or is it too simple?!

Thorsten


From xiong.xu.cn at gmail.com  Sun Sep 10 21:04:14 2006
From: xiong.xu.cn at gmail.com (xiong.xu.cn at gmail.com)
Date: 10 Sep 2006 18:04:14 -0700
Subject: Javadoc style python manual?
In-Reply-To: <1157730313.617790.65650@m79g2000cwm.googlegroups.com>
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
	<1157726433.091404.124130@d34g2000cwd.googlegroups.com>
	<1157728519.331486.198060@m79g2000cwm.googlegroups.com>
	<1157730313.617790.65650@m79g2000cwm.googlegroups.com>
Message-ID: <1157936654.189943.253400@i42g2000cwa.googlegroups.com>

Thanks for all replies regard with this question!
I think I will get used to python help system:)
Maybe I will look into epydoc, too...

-Xiong

Michele Simionato ???

> Ben Sizer wrote:
> > Michele Simionato wrote:
> > > Ben Sizer wrote:
> > > > I agree that the Python docs aren't quite as effective as reference
> > > > material due to the lack of simple function and method lists though.
> > >
> > > http://docs.python.org/lib/modindex.html, pydoc and ipython are more
> > > than enough for me.
> >
> > modindex is comprehensive but too 'flat'. Sometimes you want to see all
> > of one object's methods and properties listed together.
> >
> > I was unaware of pydoc until this thread; its existence seems to be
> > buried, somewhat. Looking at pydoc.org (assuming that is a good example
> > of it in use), it looks more like what the original poster and I might
> > want, but sadly it's still very inconsistent, with many things
> > undescribed.
> >
> > --
> > Ben Sizer
>
> Don't miss IPython, too.
>
> $ ipython
> Python 2.4.1 (#2, Aug 25 2005, 18:20:57)
> Type "copyright", "credits" or "license" for more information.
>
> IPython 0.6.15 -- An enhanced Interactive Python.
> ?       -> Introduction to IPython's features.
> %magic  -> Information about IPython's 'magic' % functions.
> help    -> Python's own help system.
> object? -> Details about 'object'. ?object also works, ?? prints more.
>
> In [1]: import email.FeedParser
>
> In [2]: email.FeedParser.FeedParser?
> Type:           classobj
> String Form:    email.FeedParser.FeedParser
> Namespace:      Interactive
> File:           /usr/lib/python2.4/email/FeedParser.py
> Docstring:
>     A feed-style parser of email.
>
> Constructor information:
> Definition:     email.FeedParser.FeedParser(self, _factory=<class
> email.Message.Message at 0xb77f5ddc>)
> Docstring:
>     _factory is called with no arguments to create a new message obj
>
>
> In [3]: help(email.FeedParser.FeedParser)
> Help on class FeedParser in module email.FeedParser:
>
> class FeedParser
>  |  A feed-style parser of email.
>  |
>  |  Methods defined here:
>  |
>  |  __init__(self, _factory=<class email.Message.Message>)
>  |      _factory is called with no arguments to create a new message
> obj
>  |
>  |  close(self)
>  |      Parse all remaining data and return the root message object.
>  |
>  |  feed(self, data)
>  |      Push more data into the parser.
>
>
> In [4]: email.FeedParser.FeedParser??
> Type:           classobj
> String Form:    email.FeedParser.FeedParser
> Namespace:      Interactive
> File:           /usr/lib/python2.4/email/FeedParser.py
> Source:
> class FeedParser:
>     """A feed-style parser of email."""
>
>     def __init__(self, _factory=Message.Message):
>         """_factory is called with no arguments to create a new message
> obj"""
>         self._factory = _factory
>         self._input = BufferedSubFile()
>         self._msgstack = []
>         self._parse = self._parsegen().next
>         self._cur = None
>          ...
>
> Unfortunately, the nice colors of IPython are lost in the post :-(
> 
>                       Michele Simionato



From Kevin.Smith at sas.com  Wed Sep 13 11:35:38 2006
From: Kevin.Smith at sas.com (Kevin D. Smith)
Date: Wed, 13 Sep 2006 11:35:38 -0400
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157649612.956390.306640@d34g2000cwd.googlegroups.com>
Message-ID: <ee98cn$qhp$1@foggy.unx.sas.com>

On 2006-09-07 13:20:13 -0400, "Jason" <tenax.raccoon at gmail.com> said:
> I don't know about MinGW, but you can get the Microsoft compilers by
> installing Visual C++ 2005 Express.  I'm guessing the old toolkit is
> deprecated.  While you must register each Visual Studio Express module
> that you download, I don't think the actual command-line tools are
> encumbered.
> 
> Why not try it out and let us know how it goes?
> 
> (Visual Studio 2005 Express:
> http://msdn.microsoft.com/vstudio/express/)

This almost worked (at least, it appears to).  I got the module to 
build and install using VS 2005.  It works fine if I run python from 
the directory where I built the extension.  However, if you go to any 
other directory, run python, and try to import the module, I get the 
following error:

ImportError: dynamic module does not define init function (initsasSQL)

Why would it work from one directory, but not another?

-- 
Kevin D. Smith



From outstretchedarm at hotmail.com  Thu Sep  7 10:31:26 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 07:31:26 -0700
Subject: 3 Simple Questions About Python/IDLE
In-Reply-To: <edp8tk$33j$1@newsreader2.netcologne.de>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
Message-ID: <1157639486.471025.15300@m79g2000cwm.googlegroups.com>

thanks



From srikrishnamohan at gmail.com  Mon Sep  4 10:15:03 2006
From: srikrishnamohan at gmail.com (km)
Date: Mon, 4 Sep 2006 19:45:03 +0530
Subject: threading support in python
Message-ID: <f4cc03640609040715m2f59b789ua4d535636d98c5d@mail.gmail.com>

Hi all,

Is there any PEP to introduce true threading features into python's
next version as in java? i mean without having GIL.
when compared to other languages, python is fun to code but i feel its
is lacking behind in threading

regards,
KM


From cvanarsdall at mvista.com  Wed Sep 27 20:05:38 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Wed, 27 Sep 2006 17:05:38 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <roy-D89592.19581727092006@reader2.panix.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
Message-ID: <451B11D2.9050200@mvista.com>

Roy Smith wrote:
> In article <1159368408.593970.110380 at k70g2000cwa.googlegroups.com>,
>  "Michele Simionato" <michele.simionato at gmail.com> wrote:
>
>   
>> John Salerno wrote:
>>     
>>> But what if you are an expert Python program and have zero clue about
>>> other languages?
>>>       
>> Python is not a trivial language (think of generators, decorators,
>> metaclasses, etc)
>>     
>
> This is, unfortunately, a sad commentary on the evolution of the language 
> over the past few years.  One of the things that made Python so attractive 
> was how simple it was, and yet powerful.
>
> Things like decorators and metaclasses certainly add power, but they add 
> complexity too.  It's no longer a simple language.
>   
Well, I think a simple language is a language that makes the simple 
things simple and some of the complex things simple.  But I also like a 
language where, if I need it, I can tap into some raw power and do that 
really wild stuff.  So its simple to use if that's all you need yet 
offers the complexity to get things done that a purely "simple" language 
can't do.  I'd say its as simple as you want it to be :)

-c



-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From anthra.norell at tiscalinet.ch  Tue Sep  5 12:24:07 2006
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Tue, 5 Sep 2006 18:24:07 +0200
Subject: newbe question about removing items from one file to another file
References: <1156714534.318183.326220@i3g2000cwc.googlegroups.com><1157338719.276714.7400@74g2000cwt.googlegroups.com><mailman.10347.1157398278.27775.python-list@python.org>
	<1157403122.851872.218820@e3g2000cwe.googlegroups.com>
Message-ID: <00a001c6d107$b6d92c20$0201a8c0@mcuf7>

You don't need the setup command. Just place SE.py and SEL.py into a path where the import can find it. Also make sure SE.py and
SEL.py are spelled exactly like this. Linux requires the extension to be lower case, as I was myself made aware of by an alert
person who was also experiencing import problems. I must confess that my fist uploads were upper case (SE.PY). I instantaneously
replaced the upload with corrected spelling and apologize for the trouble the mistake may be causing. Fortunately correcting it is a
small matter.
      Have you tried to run the function at all? It produces the same result. Made case-insensitive (if need be) I'd prefer the
function. It is more economical, since it doesn't require an extra import. It surely runs faster too (if that matters).

Frederic

----- Original Message -----
From: <Eric_Dexter at msn.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Monday, September 04, 2006 10:52 PM
Subject: Re: newbe question about removing items from one file to another file


> I am have to be able to distribute se with the project in order to use
> it
> I started with import se but I did not use the setup command
> when I comment out import se the program works and when
> I use import se everything connected to the library crashes on the
> import line..
>
>
>
>
> Anthra Norell wrote:
> > ----- Original Message -----
> > From: <Eric_Dexter at msn.com>
> > Newsgroups: comp.lang.python
> > To: <python-list at python.org>
> > Sent: Monday, September 04, 2006 4:58 AM
> > Subject: Re: newbe question about removing items from one file to another file
> >
> >
> > >
> > > Anthra Norell wrote:
> > > > Dexter,
> > > >
> > > > Here's a function that screens out all instrument blocks and puts them into a dictionary keyed on the instrument number:
> > > >
> > > > --------------------------------------------
> > > >
> > > > def get_instruments (file_name):
> >
> > etc.
> >
> > > > > <CsOptions>
> > > > > >   -W -d -o tone.wav
> > > > > > </CsOptions>
> > > > > >
> > > > ...
> > > > etc.
> > >
> > > I cut and pasted this..  It seems to be crashing my program.. I am not
> > > sure that I have all the right imports..  seems to be fine when I go to
> > > an older version of the file...  I uploaded it onto source forge.
> > >
> > > https://sourceforge.net/project/showfiles.php?group_id=156455&package_id=201306&release_id=444362
> > > http://www.dexrow.com
> > >
> >
> > Eric (Eric or Dexer?)
> >       This thread seems to have split. So let me reiterate: please copy the output when you cut, paste and run. If you have an
> > import problem it must be on the other side of your interface with SE, because I don't import anything and SE imports what it
needs.
> >
> > Frederic
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From duncan.booth at invalid.invalid  Sat Sep 30 11:19:12 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 30 Sep 2006 15:19:12 GMT
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
Message-ID: <Xns984EA6026426Aduncanbooth@127.0.0.1>

Jorge Godoy <jgodoy at gmail.com> wrote:

> See if this isn't better to read:
> 
>========================================================================
>======== 
> def print_message(some_str):
>     if some_str.startswith('track='):
>         print "Your track is", some_str[6:]
>     elif some_str.startswith('title='):
>         print "It's a title of", some_str[6:]
>     elif some_str.startswith('artist='):
>         print "It was played by", some_str[7:]
>     else:
>         print "Oops, I dunno the pattern for this line..."
>     return
> 
> for line in ['track="My favorite track"', 'title="My favorite song"',
>              'artist="Those Dudes"', 'Something else']:
>     print_message(line)
>========================================================================
>======== 
> 
> Expected output:

Or you could make it even clearer by using a loop:

messages = [
	('track=', 'Your track is'),
	('title=', "It's a title of"),
	('artist=', "It was played by"),
	]

def print_message(s):
	for key, msg in messages:
		if s.startswith(key):
			print msg,s[len(key):]
			break
	else:
		print "Oops, I dunno the pattern for this line..."

		
for line in ['track="My favorite track"', 'title="My favorite song"',
             'artist="Those Dudes"', 'Something else']:
    print_message(line)



From http  Fri Sep  8 19:56:05 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 16:56:05 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<7xmz995376.fsf@ruckus.brouhaha.com>
Message-ID: <7xirjx52wa.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> > Question is, can I do this as a list comprehension?
> 
> import operator
> x = reduce(operator.add, ([i]*a for i,a in enumerate(seq)), [])

Maybe more in the iterative spirit:

 import itertools
 seq = [2, 3, 1, 9]
 x = itertools.chain(*([i]*a for i,a in enumerate(seq)))


From ranjitha.kurra at gmail.com  Fri Sep 29 06:57:38 2006
From: ranjitha.kurra at gmail.com (Ranjitha)
Date: 29 Sep 2006 03:57:38 -0700
Subject: Pysqlite tables in RAM
Message-ID: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>

Hi all,

I'm relatively new to python and am facing a problem with database
access

I want to store my data in a database on the disk. I also want to be
able to reload the tables into the RAM whenever I have a lot of disk
accesses and commit the changes back to the database. There is an
option of storing the data in the RAM where you connect to :memory:
instead of a DB file. The problem with this is that the data is lost
everytime you close the connection to the database. Could somebody
suggest a way to load the tables into the RAM as tables and not as some
lists or dictionaries?

Thanks,
Simba



From simon at brunningonline.net  Tue Sep 19 05:51:40 2006
From: simon at brunningonline.net (Simon Brunning)
Date: Tue, 19 Sep 2006 10:51:40 +0100
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <eeobgu$fim$1@wake.carmen.se>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
	<mailman.45.1158171218.10491.python-list@python.org>
	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>
	<2C6Og.1076$UG4.672@newsread2.news.pas.earthlink.net>
	<mailman.67.1158218719.10491.python-list@python.org>
	<eeobgu$fim$1@wake.carmen.se>
Message-ID: <8c7f10c60609190251m4c65c803x66d03ac4892bd43d@mail.gmail.com>

On 9/19/06, Magnus Lycka <lycka at carmen.se> wrote:
> Fredrik Lundh wrote:
> > this article
> >
> >     http://effbot.org/zone/python-objects.htm
> >
> > may be useful for those who haven't already seen it.
>
> I don't know how many times I've referred to, or paraphrased,
> that article. Shouldn't it be incorporated into the standard
> tutorial? I think it's very helpful for people who are used
> to the way C etc handles variables.

I agree. These two, also:

http://effbot.org/zone/unicode-objects.htm
http://effbot.org/zone/import-confusion.htm

And probably more...

-- 
Cheers,
Simon B,
simon at brunningonline.net


From johnjsal at NOSPAMgmail.com  Thu Sep 28 10:29:35 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 14:29:35 GMT
Subject: best way to get data into a new instance?
Message-ID: <j%QSg.44$1n3.417@news.tufts.edu>

Let's pretend I'm creating an Employee class, which I will later 
subclass for more specific jobs. Each instance will have stuff like a 
name, title, degrees held, etc. etc.

So I'm wondering, is the best way to get all this information into the 
object to just have a really long __init__ method that takes each argument?

Does a question like this depend on how the class will be used? I'm 
trying to construct it in a way that is independent of, say, the GUI 
interface that will be used, but I can't help but think that if all the 
data is entered into a GUI, then passed programmatically to the class, 
then it's no big deal because it happens behind the scenes. But if, for 
instance, someone manually created a new instance, they would have a ton 
of arguments to type in each time. Granted, even with the GUI they are 
basically typing in arguments, but in the manual case you'd have to type 
in the call to the class, the parentheses, commas, quotes around the 
strings, etc. (But still, I'm trying not to let a specific interface 
influence the construction of what should probably be a completely 
independent class implementation.)

Thanks.


From and-google at doxdesk.com  Mon Sep 25 11:08:43 2006
From: and-google at doxdesk.com (and-google at doxdesk.com)
Date: 25 Sep 2006 08:08:43 -0700
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
Message-ID: <1159196923.577648.192520@i42g2000cwa.googlegroups.com>

Jon Ribbens wrote:

> I'm sorry, that's not good enough. How, precisely, would it break
> "existing code"?

('owdo Mr. Ribbens!)

It's possible there could be software that relies on ' not being
escaped, for example:

    # Auto-markup links to O'Reilly, everyone's favourite
    # example name with an apostrophe in it
    #
    URI= 'http://www.oreilly.com/'
    html= cgi.escape(text)
    html= html.replace('O\'Reilly', '<a href="%s">O\'Reilly</a>' % URI)

Sure this may be rare, but it's what the documentation says, and
changing it may not only fix things but also subtly break things in
ways that are hard to detect.

A similar change to str.encode('unicode-escape') in Python 2.5 caused a
number of similar subtle problems. (In this case the old documentation
was a bit woolly so didn't prescribe the exact older behaviour.)

I'm not saying that the cgi.escape interface is *good*, just that it's
too late to change it.

I personally think the entire function should be deprecated, firstly
because it's insufficient in some corner cases (apostrophes as you
pointed out, and XHTML CDATA), and secondly because it's in the wrong
place: HTML-escaping is nothing to do with the CGI interface. A good
template library should deal with escaping more smoothly and correctly
than cgi.escape. (It may be able to deal with escape-or-not-bother and
character encoding issues automatically, for example.)

-- 
And Clover
mailto:and at doxdesk.com
http://www.doxdesk.com/



From steve at holdenweb.com  Fri Sep 29 02:00:10 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 29 Sep 2006 07:00:10 +0100
Subject: wxPython and threading issue
In-Reply-To: <an0Tg.125766$sS1.18589@read1.cgocable.net>
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>	<1159499923.311082.63610@h48g2000cwc.googlegroups.com>
	<an0Tg.125766$sS1.18589@read1.cgocable.net>
Message-ID: <eficnn$5l2$2@sea.gmane.org>

Patrick Smith wrote:
> Hi,
> Thanks for your reply.
> 
> <sjdevnull at yahoo.com> wrote in message
> news:1159499923.311082.63610 at h48g2000cwc.googlegroups.com...
> 
>>Patrick Smith wrote:
>>
>>>Hi,
>>>I'm hoping someone here will be able to help as I've been struggling
> 
> with
> 
>>>this problem for a few days now.
>>>
>>>I'm working on an application that is creating a ProgressDialog, and
> 
> then
> 
>>>creating a thread that runs a function from another module in the
> 
> program.
> 
>>>The problem is, when the cancel button on the ProgressDialog is pressed,
> 
> the
> 
>>>thread that was created continues to run.  How can I make it so that
> 
> when
> 
>>>the cancel button on the dialog is clicked, the spawned thread dies?
>>
>>Have the main thread set a flag telling the worker thread to exit, and
>>have the worker thread check that periodically when it knows it's in a
>>safe state to exit.
>>
> 
> 
> This would work, unfortunately, the thread that it spawns calls a function
> in a loop, that function has an incredibly long run-time, on the order of
> minutes (possibly hours depending on the input), and that function, its self
> is multithreaded.
> This means that the worker thread could only check the flag after each
> completion of this long-running function.
> 
> Given that this is the situation, is it possible to do what I mentioned
> above?  Or does the long running function prevent any nice way of doing
> this?
> 
> 
If the function is a black box then you are stymied, I suspect.

Had you considered using a sub-process instead of a thread to perform 
the lengthy computation?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From vedran_dekovic at yahoo.com  Sun Sep  3 11:18:29 2006
From: vedran_dekovic at yahoo.com (vedran_dekovic at yahoo.com)
Date: 3 Sep 2006 08:18:29 -0700
Subject: Pmw installation problem
In-Reply-To: <mailman.10310.1157292624.27775.python-list@python.org>
References: <1157292166.731947.150210@p79g2000cwp.googlegroups.com>
	<mailman.10310.1157292624.27775.python-list@python.org>
Message-ID: <1157296709.599747.252980@p79g2000cwp.googlegroups.com>


Fredrik Lundh je napisao/la:
> vedran_dekovic at yahoo.com wrote:
>
> > When I download Pmw,and .py files copy to lib,then in python shell
> > I write:
>
> where did you copy what files?  you're supposed to place the *entire*
> Pmw directory somewhere on your path (e.g. under site-packages).  see
>
>      http://pmw.sourceforge.net/doc/starting.html
> 
> </F>


All files (.py),I was copy in lib



From Eric_Dexter at msn.com  Sat Sep  2 23:15:33 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 2 Sep 2006 20:15:33 -0700
Subject: Find the best price on gas in your local area for FREE....
In-Reply-To: <1157215122.268733.62140@74g2000cwt.googlegroups.com>
References: <1157215122.268733.62140@74g2000cwt.googlegroups.com>
Message-ID: <1157253333.718581.314810@e3g2000cwe.googlegroups.com>

I hate cars and would perfer not to be harrased by those who support
irans energy policy..

http://www.dexrow.com
highpayinghomejobs at yahoo.com wrote:
> Visit the web site below to see where you can buy the cheapest gas in
> your local area.  Just punch in your zip code and all the work is done
> for you.  No Cost!   Absolutely FREE info.
> 
> http://myweb.ecomplanet.com/pool4833/mycustompage0029.htm



From gnewsg at gmail.com  Thu Sep 14 09:00:28 2006
From: gnewsg at gmail.com (billie)
Date: 14 Sep 2006 06:00:28 -0700
Subject: Outbound port on sockets
In-Reply-To: <1158238687.403115.250480@m73g2000cwd.googlegroups.com>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
Message-ID: <1158238828.558194.91830@h48g2000cwc.googlegroups.com>

> The right format of a FTP PORT command is:
>
> PORT x,x,x,x,y,z
>
> ...where x(s) represents your IP address in dotted form and (x * y) the
> TCP port you bind.

Sorry, I wanted to say: (y * z)



From steve at holdenweb.com  Tue Sep 12 12:51:44 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 17:51:44 +0100
Subject: variable update
In-Reply-To: <ee6lsm$2u1$1@sea.gmane.org>
References: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>	<ee6b4h$mor$2@sea.gmane.org>	<ee6ft5$a3i$1@sea.gmane.org>
	<ee6lsm$2u1$1@sea.gmane.org>
Message-ID: <ee6ohm$d93$2@sea.gmane.org>

Fredrik Lundh wrote:
> Steve Holden wrote:
> 
> 
>>>access it, and catch the NameError:
>>>
>>>    try:
>>>        variable
>>>    except NameError:
>>
>>In a function when accessing a not-yet-bound local variable you may also 
>>(as Fredrik knows but didn't bother to say) see an UnboundLocalError 
>>exception,
> 
> 
>  >>> issubclass(UnboundLocalError, NameError)
> True
> 
>  >>> # muhaha!
> 
Cool.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From python.list at tim.thechases.com  Sat Sep 23 10:59:26 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 23 Sep 2006 09:59:26 -0500
Subject: Spliting a string on non alpha characters
In-Reply-To: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>
References: <1159022344.420597.278080@h48g2000cwc.googlegroups.com>
Message-ID: <45154BCE.9040207@tim.thechases.com>

> I'm relatively new to python but I already noticed that many lines of
> python code can be simplified to a oneliner by some clever coder. As
> the topics says, I'm trying to split lines like this :
> 
> 'foo bar- blah/hm.lala' -> [foo, bar, blah, hm, lala]
> 
> 'foo////bbbar.. xyz' -> [foo, bbbar, xyz]
> 
> obviously a for loop catching just chars could do the trick, but I'm
> looking for a more elegant way. Anyone can help?

1st, I presume you mean that you want back

['foo', 'bar', 'blah', 'hm', 'lala']

instead of

[foo, bar, blah, hm, lala]

(which would presume you have variables named as such, which is 
kinda funky)

That said...

Well, I'm sure there are scads of ways to do this.  I know 
regexps can do it fairly cleanly:

 >>> import re
 >>> r = re.compile(r'\w+')
 >>> s = 'foo bar- blah/hm.lala'
 >>> s2 = 'foo////bbbar.. xyz'
 >>> r.findall(s)
['foo', 'bar', 'blah', 'hm', 'lala']
 >>> r.findall(s2)
['foo', 'bbbar', 'xyz']

The regexp in question (r'\w+') translates to "one or more 'word' 
character".  The definition of a 'word' character depends on your 
locale/encoding, but would at a minimum include your standard 
alphabet, and digits.

If you're not interested in digits, and only want 26*2 letters, 
you can use

 >>> r = re.compile(r'[a-zA-Z]+')

instead (which would be "one or more letters in the set [a-zA-Z]").

-tkc







From george.sakkis at gmail.com  Tue Sep 19 14:52:46 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 19 Sep 2006 11:52:46 -0700
Subject: Curious issue with simple code
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
	<1158688561.267994.231680@i42g2000cwa.googlegroups.com>
Message-ID: <1158691966.421259.118880@h48g2000cwc.googlegroups.com>

codefire wrote:

> Ah of course, isfile(f) can only return true if it can find f! :)
>
> I'm going to investigate those other functions too :)
>
> Thanks a lot guys!
> Tony

By the way, an easier way to deal with paths is the path.py module
(http://www.jorendorff.com/articles/python/path/). Your example could
be rewritten simply as:

from path import path
for html_file in path(start_dir).walkfiles('*.html'):
    print 'html file found!' 

George



From deets at nospam.web.de  Wed Sep 20 13:17:23 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 20 Sep 2006 19:17:23 +0200
Subject: Is it possible to change a picture resolution with Python?
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
	<1158768080.415936.41750@i3g2000cwc.googlegroups.com>
Message-ID: <4ndbd3F9tgfdU1@uni-berlin.de>

> Thank you for your reply.
> But the above code increases size only , but not DPI resolutions(
> vertical nad horizontal).I need  a higher  vertical and horisontal
> resolutions.
> Any idea how to do that?

The DPI is nothing an image contains by itself - it depends on the
resolution of the rendering device!

So - without knowing what DPI the output device produces, and which
resolution the image was acquired in, you can't do anything.

If you know these two quantities, you can scale the image by the appropriate
amount.

Bearophile suggested that there might be a DPI-information stored in the
image itself. If so, it is hopefully the DPI the image was e.g. scanned in.
But if you for example afterwards scaled it by half, this information must
be altered accordingly, to reflect the changes.

Diez


From larry.bates at websafe.com  Thu Sep  7 10:58:19 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 07 Sep 2006 09:58:19 -0500
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <1157639580.217361.273200@i42g2000cwa.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
Message-ID: <4500338B.1070408@websafe.com>

Omar wrote:
> thanks.
> 
> i have saved and double clicked as suggested.  when I save and double
> click a simple "hello program", the b&w python shell briefly comes up,
> then disappears. is this how it should work?
> 
Yes, that is how it should work.  Program is doing what you
told it to.  print "hello program" and exit (which closes the window).
If you want it to pause put something after the print like:

t=raw_input('Hit return to continue')

This way the program will pause until you hit return.

Good luck.

-Larry Bates


From paolopantaleo at gmail.com  Tue Sep 19 08:09:13 2006
From: paolopantaleo at gmail.com (Paolo Pantaleo)
Date: Tue, 19 Sep 2006 14:09:13 +0200
Subject: Writing Video conference software for Windows
Message-ID: <83e8215e0609190509i117e7543t19ffd8d112b82337@mail.gmail.com>

Hi,

I need to write a software that allow to see the desktop and hear the
microphone capture of a remote PC across a network. I need to do that
for a unviresity assignement. The software must  run on Windows. Since
I like Python very much I am thinking to write that software in
Python. Do you thinkit is a good choice? Are there libraries for audio
compression (OGG or MP3 or maybe GSM or something like realaudio) and
video compression (btw what can be some good libraries to transmit
images of a desktop in a bandwidth-efficent way?). What about capture
of audio and screen? (Probably i will need some Win32 system call,
there are bindings in Python, aren't they?)

If I needed to write some Python modules in C, would it be difficult?

Can some language like C# or C++ may be better?

Thnx
PAolo

-- 
if you have a minute to spend please visit my photogrphy site:
http://mypic.co.nr


From george.sakkis at gmail.com  Tue Sep 19 15:40:52 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 19 Sep 2006 12:40:52 -0700
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
Message-ID: <1158694852.061159.247800@k70g2000cwa.googlegroups.com>

Bruno Desthuilliers wrote:

> I must definitively be dumb, but so far I fail to see how it's better
> than split and rsplit:

I fail to see it too. What's the point of returning the separator since
the caller passes it anyway* ?

George

* unless the separator can be a regex, but I don't think so.



From exogen at gmail.com  Sat Sep  9 21:14:07 2006
From: exogen at gmail.com (Brian Beck)
Date: Sat, 09 Sep 2006 21:14:07 -0400
Subject: [ANN] geopy: a Geocoding Toolbox for Python
References: <edqpof$ca0$1@eeyore.INS.cwru.edu>
Message-ID: <edvosj$o02$1@eeyore.INS.cwru.edu>

Brian Beck wrote:
> I'm happy to announce the first (alpha) release of geopy, a geocoding
> toolbox for Python: http://exogen.case.edu/projects/geopy/

For anyone interested, there is now a mailing list on Google Groups:
http://groups.google.com/group/geopy

geopy also now supports the Virtual Earth geocoder and better support for UK
addresses using the Google geocoder.

-- 
Brian Beck
Adventurer of the First Order


From nogradi at gmail.com  Sun Sep 17 12:10:51 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sun, 17 Sep 2006 18:10:51 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158507849.378435.47080@d34g2000cwd.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
	<pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>
	<1158507849.378435.47080@d34g2000cwd.googlegroups.com>
Message-ID: <5f56302b0609170910h17f65bc0tb9ab73b94b33e128@mail.gmail.com>

> > > That said...the Python docs are open source. Just start going through
> > > them and adding examples.
> >
> > ASPN (activestate) is a good place for examples...
>
> Yes, but that requires a separate search and depends on an external
> organization. Wouldn't it be great if relevant examples were a single
> click away from official documentation on any given module?  Examples
> could either come in via a wiki approach, or maybe in some cases from
> the doctests, which would be nice to have alongside handy access to the
> source code.

Since the activestate site is already an established repository for
code snippets and examples I don't think it would be a good idea to
start a new one. What would be very useful though is more visible
links on the python.org site to the activestate repository where
appropriate. I'm not sure the pyhon.org people would want to promote
activestate though, nevertheless it would be a great help to many.


From g.brandl-nospam at gmx.net  Fri Sep 15 01:08:52 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Fri, 15 Sep 2006 07:08:52 +0200
Subject: RELEASED Python 2.5 (release candidate 2)
In-Reply-To: <1158158585.959817.189160@e3g2000cwe.googlegroups.com>
References: <mailman.19.1158149124.10491.python-list@python.org>
	<1158158585.959817.189160@e3g2000cwe.googlegroups.com>
Message-ID: <eedch4$srs$2@news.albasani.net>

Ant wrote:
> Anthony Baxter wrote:
> ...
>> code in 2.5 before the final release. *Please* try this
>> release out and let us know about any problems you find.
> 
> Not a problem with the release, but with the docs. I've just ported a
> module using the ElementTree package to 2.5, and the Module Index
> (http://docs.python.org/dev/modindex.html) lists the package as
> elementtree, where it should be xml.etree.
> 
> Not a major problem, but threw me for a while, since the only reference
> to the actual name of the module is in the title of
> http://docs.python.org/dev/lib/module-elementtree.html (8.13
> elementtree -- The xml.etree.ElementTree Module).

Please open a bug in the tracker at http://www.sf.net/projects/python.

Georg


From jon+usenet at unequivocal.co.uk  Wed Sep 27 05:26:42 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 27 Sep 2006 09:26:42 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
	<mailman.748.1159310964.10491.python-list@python.org>
Message-ID: <slrnehkgtu.7kj.jon+usenet@snowy.squish.net>

In article <mailman.748.1159310964.10491.python-list at python.org>, Gabriel G wrote:
> By example, I do not validate a "page". I validate that all methods 
> that make up pieces of a page, build them the way they should - these 
> are our "unit tests". Then, it's up to the templating library to join 
> all the pieces into the final html page.

That sounds sensible to me - and also likely to be the sort of tests
that are not going to get broken by changes to cgi.escape ;-)

> I validated the original html against the corresponding dtd some time 
> ago (using the w3c validator), and ocasionally when things "looks 
> wrong" on a browser, but most of the time the html generated pages 
> are not validated nor checked as a whole.

That's possibly a mistake, but obviously that depends on details of
how your overall methodology works that I have no information about.


From __peter__ at web.de  Sat Sep 30 04:31:25 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 30 Sep 2006 10:31:25 +0200
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efl9tm$ak5$02$1@news.t-online.com>

Sybren Stuvel wrote:

> Paul Rubin enlightened us with:
>>> height = 0
>>> for block in stack:
>>>     if block.is_marked():
>>>         print "Lowest marked block is at height", height
>>>         break
>>>     height += block.height
>>> else:
>>>     raise SomeError("No marked block")
>>
>>     all_heights = [block.height for block in stack if block.is_marked()]
>>     if all_heights:
>>       height = sum(all_heights)
>>     else:
>>       raise SomeError("No marked block")
>>
>> Alternatively (lower memory usage for large list):
>>
>>     all_heights = (block.height for block in stack if block.is_marked())
>>     try:
>>       height = all_heights.next()
>>       height += sum(all_heights)
>>     except StopIteration:
>>       raise SomeError("No marked block")
> 
> I must say that the for/else construct is a LOT more readable than the
> rewritten alternatives.

I like

def blocks_til_mark(stack):
    for block in stack:
        if block.is_marked():
            return
        yield block
    raise SomeError
height = sum(block.height for block in blocks_til_mark(stack))

Peter


From ldo at geek-central.gen.new_zealand  Thu Sep 28 01:14:36 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Thu, 28 Sep 2006 17:14:36 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.849.1159413324.10491.python-list@python.org>
Message-ID: <efflm1$p85$2@lust.ihug.co.nz>

In message <mailman.849.1159413324.10491.python-list at python.org>, Stuart
Bishop wrote:

> People also use that function to escape non-HTML too - if they are using
> it as documented, and it produces the correct results for them, great.
> Note that the documentation doesn't say that input has to be HTML, nor
> that output must be used as HTML.

It says that the input is converted to "HTML-safe sequences".

> It just describes the transformation 
> that it does clearly and unambiguously and can quite happily be used for
> generating quoted text for use in, say, XML documents.

And all those character entities references are also valid in XML.

> Also, because Python has a 
> conservative policy on backwards incompatible changes, you are protected
> from some wanker going and changing the HTML safe mappings arbitrarily,
> say using numerical entity references instead of &gt;, &lt; and &amp;.

Why would that be wrong? It would still be consistent with the
documentation.



From steve at holdenweb.com  Fri Sep 15 13:38:22 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 15 Sep 2006 13:38:22 -0400
Subject: Limitate speed of a socket-based data transferring
In-Reply-To: <12gllfkki918r7a@corp.supernews.com>
References: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>	<zpAOg.12468$xQ1.1498@newsread3.news.pas.earthlink.net>
	<12gllfkki918r7a@corp.supernews.com>
Message-ID: <eeeod3$q1$1@sea.gmane.org>

Grant Edwards wrote:
> On 2006-09-15, Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:
> 
>>On 14 Sep 2006 04:54:48 -0700, "billie" <gnewsg at gmail.com> declaimed the
>>following in comp.lang.python:
>>
>>
>>>Hi all. I'm writing a TCP-based application that I will use to trasfer
>>>binary files through the network. This piece of code represents how do
>>>I get a file from a remote peer and save it on my local hard drive:
>>>
>>
>>	<code snipped>
>>
>>>I would like to know how could be possible to limit the file transfer
>>>speed (for example: don't write more than 50 Kb/sec).
>>>Some ideas?
>>>
>>
>>	I'm not sure you /can/ limit the /receive/ speed.
> 
> 
> Sure you can.  Just read data from the socket at the max speed
> you want to receive.  The receive buffer for that socket will
> fill up and the TCP window will start close up and throttle the
> sender.
> 
> 
>>The sender will send at whatever rate they are capable of, so
>>packets may just become backlogged on your receiving socket
> 
> 
> When that happens, the sending end of the socket will throttle
> down to match the rate at which data is being read from the
> socket.
> 
> 
>>waiting for you to read them if you add some sort of delay to
>>your reading loop.
> 
> 
Of course this depends crucially on the window size. Since the addition 
of the window scaling TCP option it's been possible to specify very 
large windows, which are useful over high-bandwidth high-delay links.

The remote (send) throttling will only start to cut in when the window 
is full (since the whole point of the sliding window mechanism is to 
allow continuous transmission in the face of acknowledgment delay).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From awalter1 at cegetel.net  Mon Sep 11 12:31:04 2006
From: awalter1 at cegetel.net (awalter1)
Date: 11 Sep 2006 09:31:04 -0700
Subject: get the en of a program running in background
In-Reply-To: <45056ee1$0$75029$14726298@news.sunsite.dk>
References: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>
	<1157924568.562057.317380@e3g2000cwe.googlegroups.com>
	<1157977548.323143.57380@e3g2000cwe.googlegroups.com>
	<45056ee1$0$75029$14726298@news.sunsite.dk>
Message-ID: <1157992263.924005.164720@h48g2000cwc.googlegroups.com>

Hi,
I am using subprocess module, then I do not fork my program.
How use os.wait() in a non blocking mode ?
Thanks

Damjan wrote:
> > It works when a click on a button launches a program P.
> > Now, I want that a click on another button launches another program P'
> >
> > In this case there is only one signal for two events : the end of P and
> > the end of P'.
> > How can distinct the two cases.
>
> Remember the PIDs of the forked procesess and in your signal handler use
> os.wait() to see which one has died.
> BTW os.wait() can work in non-blocking mode .
> 
> 
> -- 
> damjan



From python at hope.cz  Wed Sep 13 11:51:53 2006
From: python at hope.cz (Lad)
Date: 13 Sep 2006 08:51:53 -0700
Subject: Is there a way to find IP address?
Message-ID: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>

Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
If a user  is behind a proxy, I will log  proxy's IP address only.
Is there a way how to find a real IP user's address?
Thank you for help.
LL.



From sjmachin at lexicon.net  Thu Sep 14 01:14:27 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 22:14:27 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
In-Reply-To: <1158208960.604307.59760@e3g2000cwe.googlegroups.com>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>
	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>
Message-ID: <1158210867.646388.319050@p79g2000cwp.googlegroups.com>


Michael top-posted [corrected]:
> John Machin wrote:
> > Michael wrote:
> > > Hi All,
> > >
> > > I've received (via UDP) a null terminated string and need to convert it
> > > into a Python string. Can anyone tell me how this is done? If it helps,
> > > I know the number of characters in the string.
> > >
> >
> > I think you mean NUL, not null.
> >
> > What have you received it into, if it's not a Python string?
> >
> > You probably need/want this:
> >
> > if strg[-1] == "\0":
> >     strg = strg[:-1]
> > alternatively:
> > strg = strg.rstrip("\0") # requires Python 2.2.2 or later
> >
> > It's possible you may be talking about a fixed length string which
> > contains useful_stuff + "\0" + padding -- in that case you need
> >
> > strg = strg.split("\0")[0] # grab upto (but not including) the first
> > NUL (if any)
> >
> > If you're not sure what you've got, print repr(the_input_string)
> >
> > HTH,
> > John
> Thank you very much for your responses. To answer some of the
> questions... Yes, I am in Python receiving a C language 0 terminated
> string that was sent to my Python program in a UDP packet (which is how
> I know the count). Are your responses still correct given this
> clarification?

My responses are correct. Your "clarification" indicates to me that you
are going by what you are told, not by inspection of (several instances
of) the packet contents, using repr(). It's up to you whether you want
to be skeptical about the packet contents or not. I certainly wouldn't
be throwing the last byte away without checking that it was in fact a
NUL. 

Cheers,
John



From bearophileHUGS at lycos.com  Mon Sep 18 14:53:32 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 18 Sep 2006 11:53:32 -0700
Subject: Code Golf Challenge : 1,000 Digits Of Pi
In-Reply-To: <1158602663.906546.246970@h48g2000cwc.googlegroups.com>
References: <mailman.232.1158591996.10491.python-list@python.org>
	<1158602663.906546.246970@h48g2000cwc.googlegroups.com>
Message-ID: <1158605612.814018.110830@m7g2000cwm.googlegroups.com>

Paddy:
> Is having good 'code-fu' worthwhile? It may be trivial to score but do
> the results show who iss the better programmer?

With Python you can't win, because Perl and Ruby allow for shorter
programs.
Beside the language, you win if you can invent more tricks, that you
have to avoid in real code, because it must be very readable.
The positive side of this game is that you exercise yourself, so you
get to know the programming language better, and you learn all the
corner cases of your language. Knowing them is useful, to avoid them
when you program for real, to avoid some kind of bugs generated by
corner cases.

Bye,
bearophile



From richardb at sailmaker.co.nospam.uk  Mon Sep  4 21:17:48 2006
From: richardb at sailmaker.co.nospam.uk (Richard Buckle)
Date: Tue, 05 Sep 2006 02:17:48 +0100
Subject: Dice gen and analyser script for RPGs: comments sought
Message-ID: <050920060217482624%richardb@sailmaker.co.nospam.uk>

Hi fellow Pythonistas, 

I've been using Python in anger for some time, and I must say, as I
wrote in <http://macprang.sourceforge.net/>:

"It's refreshing beyond words to use a language that so freely combines
such a small, clean syntax with such a powerful synthesis of
procedural, object-oriented and functional techniques."

My (hardcore C++) workplace is now very much converted to Python for
scripting tasks! We have completely abandoned Unix and DOS
shell-script, and Perl. We drive our entire "build-for-QA" process,
including code-signing, with Python and also use it for all our
automated nightly builds and unit tests.

So, inspired by the Python cookbook article 17.13, and because the
subject interests me, I've bashed out a module in my own time that can
do brute force and monte carlo analysis of dice under various RPG
rulesets:

* vanilla rolls of n x-sided dice, the result being multiplied by y 
   (usual d20 system ndx*y)
* as above, but the lowest m rolls are discarded
  (optional d20 char gen rules)
* dice beating a threshold (Storyteller-style system), 
  with optional roll again
* opposed sorted rolls (Risk-style system).

The 1.0 version is at http://www.sailmaker.co.uk/newfiles/dice.py and
is public domain.

Before you ask, yes I'm fully aware of Newton's binomial theorem and
its generaliziations. The point of this code is to however to
generalise, exercise and accumulate the brute force and Monte Carlo
methods across various evaluatuon rules.

All comments welcomed, cc to email preferred merely because it shows up
sooner for me and is less likely to be missed.

Comments, insights and overall evaluations are especially welcomed re:
* Cleanliness of design
* Pythonicity of design
* Pythonicity of code
* Efficiency of code
* Quality of docstrings
* Conformance with modern docstring standards
* Conformance with coding standards e.g. PEP 8

I look forward to receiving your comments and criticisms.

Regards,
Richard.


From MonkeeSage at gmail.com  Sat Sep 23 20:13:33 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 23 Sep 2006 17:13:33 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
	<4nivr5Fan2s7U2@individual.net> <ef37r0$5hj$3@lust.ihug.co.nz>
	<4nko0uFar902U2@individual.net>
	<1159015593.127666.178770@m7g2000cwm.googlegroups.com>
	<4nlompFb1r94U1@individual.net>
Message-ID: <1159056813.171720.23460@h48g2000cwc.googlegroups.com>

Bjoern Schliessmann wrote:
> Thanks. Only if I'd known that earlier ;)

NP. I had to look it up 'cause I'd never seen them used either.

Regards,
Jordan



From http  Sun Sep 24 17:58:57 2006
From: http (Paul Rubin)
Date: 24 Sep 2006 14:58:57 -0700
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
	<4nocq8Fb434vU1@uni-berlin.de>
Message-ID: <7xzmcpyli6.fsf@ruckus.brouhaha.com>

"Diez B. Roggisch" <deets at nospam.web.de> writes:
> There is a good daemonization recipe on activstate:
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012

That is worth reading, including the long comment thread.


From stefaan.himpe at gmail.com  Wed Sep 13 11:43:10 2006
From: stefaan.himpe at gmail.com (stefaan.himpe at gmail.com)
Date: 13 Sep 2006 08:43:10 -0700
Subject: auto upgrade scripts?
In-Reply-To: <pJmdnaEoW6iPa5rYnZ2dnUVZ_v6dnZ2d@comcast.com>
References: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>
	<4505EB1E.5070007@websafe.com>
	<1158045742.490620.29520@h48g2000cwc.googlegroups.com>
	<pJmdnaEoW6iPa5rYnZ2dnUVZ_v6dnZ2d@comcast.com>
Message-ID: <1158162190.774212.144950@m73g2000cwd.googlegroups.com>

> Since you mention .NET and didn't state otherwise, I'm assuming
> Windows platform?

No, I need both linux and windows. I guess this means
I'll have to make something myself ...

Thanks, and best regards,
Stefaan.



From claird at lairds.us  Thu Sep 21 15:29:00 2006
From: claird at lairds.us (Cameron Laird)
Date: Thu, 21 Sep 2006 19:29:00 +0000
Subject: str() vs. repr() (was: How to return an "not string' error in
	function?)
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
	<71oau3-vr5.ln1@lairds.us>
	<1158855308.877117.187050@b28g2000cwb.googlegroups.com>
Message-ID: <so5bu3-spt.ln1@lairds.us>

In article <1158855308.877117.187050 at b28g2000cwb.googlegroups.com>,
 <breakfastea at gmail.com> wrote:
			.
			.
			.
>PS: Is str() the same as repr() ?
			.
			.
			.
No <URL: http://www.thescripts.com/forum/thread19556.html > or
<URL: http://groups.google.com/group/comp.lang.python/browse_thread/thread/f4556ec0bbbeb45c/ >.


From R.Brodie at rl.ac.uk  Tue Sep 12 10:53:12 2006
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Tue, 12 Sep 2006 15:53:12 +0100
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
Message-ID: <ee6hko$mlk$1@south.jnrs.ja.net>


"metaperl" <metaperl at gmail.com> wrote in message 
news:1158072199.681163.212310 at p79g2000cwp.googlegroups.com...

> Why isn' t the parser smart enough to see that class followed by an
> identifier is used for class definition but class followed by equals is
> a simple assignment?

Because it's simpler to reserve words than worry about possible
ambiguities in all past and future use cases. If you could use it
as an identifier, it wouldn't be a reserved word by the normal
definition of the term. 




From jantod at gmail.com  Fri Sep 15 03:32:49 2006
From: jantod at gmail.com (Janto Dreijer)
Date: 15 Sep 2006 00:32:49 -0700
Subject: UDP packets to PC behind NAT
Message-ID: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>

This is probably more of a networking question than a Python one, but
it would be nice to know if someone has done this with Python's socket
module. And besides one usually gets more information from c.l.py than
anywhere else :)

I have a server with a static "public" IP and a client behind a NAT. I
would like to send UDP packets from the server to the client. So what I
need to do is open up a "hole" in the NAT and let the server know the
target IP and port of the client where it can send its packets.

Now I have read somewhere that you can have TCP and UDP running on the
same port. Not sure if this is true. Would it be a reasonable solution
to initiate a TCP connection from the client to the server and somehow
(?) let the server figure out how the client is connecting? And then
send UDP to client over the same (IP, port)?



From lance.ellinghaus at eds.com  Thu Sep  7 11:33:40 2006
From: lance.ellinghaus at eds.com (Ellinghaus, Lance)
Date: Thu, 7 Sep 2006 11:33:40 -0400
Subject: Wrapper for EMC SYMAPI library
Message-ID: <F23F5B9B3660114791BD9810CE92DE8701FA655D@ushrm232.amer.corp.eds.com>

Has anyone ever created a python wrapper for the EMC SYMAPI library???

Any information would be very much appreciated!!

Thank you,
Lance Ellinghaus

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From frank at chagford.com  Tue Sep 26 10:10:13 2006
From: frank at chagford.com (Frank Millman)
Date: 26 Sep 2006 07:10:13 -0700
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <mailman.683.1159279075.10491.python-list@python.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
	<efaeg4$5oj$2@lust.ihug.co.nz>
	<mailman.629.1159250957.10491.python-list@python.org>
	<efaj9p$fqq$2@lust.ihug.co.nz> <efakif$idf$1@lust.ihug.co.nz>
	<mailman.644.1159256238.10491.python-list@python.org>
	<efapp8$rfd$3@lust.ihug.co.nz>
	<mailman.652.1159263385.10491.python-list@python.org>
	<efase7$16m$1@lust.ihug.co.nz>
	<mailman.683.1159279075.10491.python-list@python.org>
Message-ID: <1159279813.569837.206530@e3g2000cwe.googlegroups.com>


Steve Holden wrote:
>
> Can you please stop this incessant carping? c.l.py used to be a fun
> place to hang out.
>

Hey, Steve, don't let it get to you. It's still 98% fun.

I am reminded of a spoof Latin motto from the days of my youth -

    NIL ILLEGITIMO CARBORUNDUM

Translation available on request.

Frank Millman



From amk at amk.ca  Fri Sep  8 09:35:37 2006
From: amk at amk.ca (A.M. Kuchling)
Date: Fri, 08 Sep 2006 08:35:37 -0500
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
Message-ID: <AMidnX2bzpE07JzYnZ2dnUVZ_vCdnZ2d@speakeasy.net>

I've made the following edits:

Index: whatsnew25.tex
===================================================================
--- whatsnew25.tex      (revision 51828)
+++ whatsnew25.tex      (working copy)
@@ -2116,14 +2116,16 @@
 SQLite embedded database, has been added to the standard library under
 the package name \module{sqlite3}.

-SQLite is a C library that provides a SQL-language database that
-stores data in disk files without requiring a separate server process.
+SQLite is a C library that provides a lightweight disk-based database
+that doesn't require a separate server process and allows accessing
+the database using a nonstandard variant of the SQL query language.
+Some applications can use SQLite for internal data storage.  It's also
+possible to prototype an application using SQLite and then port the
+code to a larger database such as PostgreSQL or Oracle.
+
 pysqlite was written by Gerhard H\"aring and provides a SQL interface
 compliant with the DB-API 2.0 specification described by
-\pep{249}. This means that it should be possible to write the first
-version of your applications using SQLite for data storage.  If
-switching to a larger database such as PostgreSQL or Oracle is
-later necessary, the switch should be relatively easy.
+\pep{249}.

 If you're compiling the Python source yourself, note that the source
 tree doesn't include the SQLite code, only the wrapper module.


From meyer at acm.org  Fri Sep  8 04:01:05 2006
From: meyer at acm.org (Andre Meyer)
Date: Fri, 8 Sep 2006 10:01:05 +0200
Subject: the first arg to super() must be a type, not a class obj?
In-Reply-To: <edr7e2$g0u$1@news.albasani.net>
References: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>
	<edr7e2$g0u$1@news.albasani.net>
Message-ID: <7008329d0609080101j1f7dbc43gaa46ecf8daa74b7e@mail.gmail.com>

Another thing: how does super() work wrt. multiple inheritance? It seems
like it returns only the first superclass.

regards
Andre



On 9/8/06, Georg Brandl <g.brandl-nospam at gmx.net> wrote:
>
> metaperl wrote:
> > On p.282 of "Python Cookbook" and in the Python docs on calling super:
> > http://www.python.org/download/releases/2.2.3/descrintro/#cooperation
> >
> > it is clear that the first argument to super is a class and not a type.
> > However, for the code below, I am getting an error when attempting to
> > provide a class as my first argument and don't understand why. Also,
> > since this is my first attempt at writing anything of any seriousness
> > in Python, any other feedback is welcome.
>
> "super" only works for new-style classes.
>
> You could make "ftputilx" new-style by inheriting from object and FTPHost,
> but FTPHost is still old-style, and I don't know if that's okay with
> super.
>
> So in your case it would be advisable to use
>
> FTPHost.__init__(self)
>
> instead of
>
> super(ftputilx, self).__init__()
>
> Georg
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Dr. Andre P. Meyer                        http://python.openspace.nl/meyer
TNO Defence, Security and Safety          http://www.tno.nl/
Delft Cooperation on Intelligent Systems  http://www.decis.nl/

Ah, this is obviously some strange usage of the word 'safe' that I wasn't
previously aware of. - Douglas Adams
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From uche.ogbuji at gmail.com  Fri Sep 29 10:39:21 2006
From: uche.ogbuji at gmail.com (uche.ogbuji at gmail.com)
Date: 29 Sep 2006 07:39:21 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159535420.602412.71400@m7g2000cwm.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159535420.602412.71400@m7g2000cwm.googlegroups.com>
Message-ID: <1159540761.666413.237750@c28g2000cwb.googlegroups.com>

uche.ogbuji at gmail.com wrote:
> For what it's worth I just developed, and switched to WSGI middleware
> that only does the transform on the server side if the client doesn't
> understand XSLT.  It's called applyxslt and is part of wsgi.xml [1].
> That reduces server load, and with caching (via Myghty), there's really
> no issue for me.  For more on WSGI middleware see [2].
>
> [1] http://uche.ogbuji.net/tech/4suite/wsgixml/
> [2] http://www.ibm.com/developerworks/library/wa-wsgi/

I just wanted to clarify that not only does the applyxslt middleware
approach reduce server load, but in the case of clients running IE6 or
IE7, the XSLT *does* end up being executed in MSXML after all: MSXML on
the client's browser, rather than on the server.  In the case of
Mozilla it's Transformiix, which is between MSXML and 4Suite in
performance.  Not sure what's the XSLT processor in the case of Safari
(only the most recent versions of Safari).  But regardless, with that
coverage you can write apps using XSLT, support the entire spectrum of
browsers (and mobile apps, spiders, etc.) and yet rarely ever require
XSLT applied on the server side.


> --
> Uche Ogbuji                               Fourthought, Inc.
> http://uche.ogbuji.net                    http://fourthought.com
> http://copia.ogbuji.net                   http://4Suite.org
> Articles: http://uche.ogbuji.net/tech/publications/



From no at spam.com  Tue Sep  5 02:27:37 2006
From: no at spam.com (Mike Krell)
Date: Tue, 05 Sep 2006 01:27:37 -0500
Subject: What are super()'s semantics?
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
	<1157368051.502565.122930@i42g2000cwa.googlegroups.com>
Message-ID: <Xns9834EEB92135Ckojaklikescheerios@144.162.164.191>

"Michele Simionato" <michele.simionato at gmail.com> wrote in 
news:1157368051.502565.122930 at i42g2000cwa.googlegroups.com:

> Anyway, the MRO concept is documented here:
> 
> http://www.python.org/download/releases/2.3/mro/

A very edifying document.  Indeed, in "Nutshell" Alex M. mentions your 
paper at the end of his high-level explanation of the MRO.  In my infinite 
wisdom, I had chosen not to follow up by reading about the nitty-gritty 
details :-)

As I mentioned in another post, it wasn't my lack of understanding of the 
MRO per se that tripped me up.  I somehow managed to know that in Alex's 
example, an instance of the D class would have an MRO of essentially (D, C, 
B, A), and yet not realize that this was strangly similar to the output of 
the example.  D'oh!

   Thanks,
   Mike



From steve at holdenweb.com  Mon Sep 25 08:59:58 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 08:59:58 -0400
Subject: How do I submit fixes for urllib2 & urlparse?
In-Reply-To: <1159185094.3276.20.camel@alfa>
References: <1159185094.3276.20.camel@alfa>
Message-ID: <ef8jqv$hrp$1@sea.gmane.org>

Neville CD wrote:
> Basically I encountered some smallish problems with a couple of modules
> and figure I can fix the problems.  
> 
> I did find http://sourceforge.net/projects/python, should I report my
> problem report there and then assign them to myself to fix (and create
> test scripts). 
> 
> As you can probably guess I have not provided python fixes before.
> 
> How complicated is this? eg I am using python 2.4 and 2.5b3.  Do I need
> to get up to speed with 2.6(?) and fix this also?  As a newbie which
> python mailing list should I subscribe to.
> 
> Please point me to the right URL to answer the above queries.
> 
> FYI: the problems I encountered are for:
> 1. Set-cookies in 302 urllib2.httpRedirects.
> 2. Location: header %20 format problem
> 3. urlparse.start_tag attribute parsing and HTML syntax error recovery.
> 
> Cheers
> NevilleDNZ
> 
Neville:

It's not that complicated, but normally I believe that only site admins 
can assign bugs (I could be wrong).

You don't need to be "up to date on 2.6" as long as the changes you 
propose don't collide with other changes made for 2.6 - of which there 
will probably be relatively few so soon after the release of 2.5.

The recommended way for non-committers to suggest changes is by patching 
your own copy of the SVN version then generating a patch in the form of 
a diff listing.

The problem with this is the difficulty of getting committers to review 
and apply your patch (they are busy guys, after all). A number of them, 
however, have undertaken to do so if you review five other patches and 
report the results.

I believe email to python-dev would be an acceptable way to report your 
results and request review of your patch. It's a good list to lurk on to 
keep in touch with developments. Keep it up and you may get commit 
privileges eventually!


regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From deets at nospam.web.de  Sat Sep  2 19:47:47 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sun, 03 Sep 2006 01:47:47 +0200
Subject: Libraries in python
In-Reply-To: <1157226778.513403.183620@p79g2000cwp.googlegroups.com>
References: <1157176049.124197.249310@h48g2000cwc.googlegroups.com>
	<1157226778.513403.183620@p79g2000cwp.googlegroups.com>
Message-ID: <4lujh4F3n96qU1@uni-berlin.de>

> That's my $0.02 on Python packaging and library dependencies. In my
> opinion it's one of the few things that Java got right that Python
> didn't.

Yeah, sure. Hunting down a subtle class loading bug because of e.g. 
different xml-api versions in your classpath in just a few hours is a 
thing java certainly "got right".

Additionally, you refuse to "hack" around with sys.path, but the concept 
of CLASSPATH that you have to carefully compose in the first place 
appeals to you.

There is no standard way of versioned library access anywhere in java - 
so while setuptools might not be perfect, they at least offer _something_.

And the fact that machine code containing eggs are an annoyance to you 
is perfectly met by the need of java to have JNI dependant .so/.dll 
files being part of the LD_LIBRARY_PATH (and whatever is needed on 
windows, I presume PATH)

Just because every nitwit in java is accustomed to meddle with 
classpaths and thus the application servers do something like adding 
WEB-INF/lib to the classpath (a thing that you refer to as hacking in 
python) does not mean its system is in any way superior to pythons.

Diez



From bearophileHUGS at lycos.com  Fri Sep  8 20:08:57 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 Sep 2006 17:08:57 -0700
Subject: Map with an extra parameter
In-Reply-To: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
Message-ID: <1157760537.816693.243780@d34g2000cwd.googlegroups.com>

This may be what you need:

class foo:
  def __init__(self, a, b):
     self.a = a
     self.b = b

vars = [1,2,3,4,5,6]
objects = [foo(a, 1) for a in vars]


Note that in Python the new is expressed wit the () at the end:

>   f = new foo()

Bye,
bearophile



From bdesth.quelquechose at free.quelquepart.fr  Mon Sep  4 19:54:34 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 05 Sep 2006 01:54:34 +0200
Subject: Better way to replace/remove characters in a list of strings.
In-Reply-To: <1157374314.068280.302480@e3g2000cwe.googlegroups.com>
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
	<edh04n$o0g$1@news.lrz-muenchen.de>
	<1157367752.806830.317400@m79g2000cwm.googlegroups.com>
	<1157374314.068280.302480@e3g2000cwe.googlegroups.com>
Message-ID: <44fcb9ca$0$31422$626a54ce@news.free.fr>

Chris Brat a ?crit :
> Thanks, thats exactly what I was looking for - very neat.
> 
Just note that both solutions rebind the name to a newly constructed 
list instead of modifying the original list in place. This is usually 
the RightThing(tm), but sometimes one wants an in-place modification.


From fredrik at pythonware.com  Tue Sep 26 06:32:13 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 12:32:13 +0200
Subject: where are isinstance types documented?
In-Reply-To: <efaur9$2p4$1@sea.gmane.org>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
	<efaur9$2p4$1@sea.gmane.org>
Message-ID: <efavjd$4s4$1@sea.gmane.org>

Fredrik Lundh wrote:

> Sequences:
>      str
>      unicode

footnote: to simplify, there's also a "basestring" base class that can 
be used to check for either str or unicode:

     isinstance(obj, basestring)

is equivalent to

     isinstance(obj, (str, unicode))

</F>



From axel.fix at sitqsystems.com  Fri Sep  1 06:27:59 2006
From: axel.fix at sitqsystems.com (axel)
Date: 1 Sep 2006 03:27:59 -0700
Subject: Jython: single step / pause / debug ...
Message-ID: <1157106479.458236.251450@74g2000cwt.googlegroups.com>

Hello,

I want to integrate Jython into my java application. But I want to
control the script execution. How can be realized this? I have used
TraceFunction and the script stops alway in traceCall().
But (1) I have never seen what I have to return there, (2) only this
function is called - also if there is an error in the script and (3)
what I have to do to pause/stop the script?

Thanks, Axel



From g.brandl-nospam at gmx.net  Sun Sep 24 14:08:24 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 24 Sep 2006 20:08:24 +0200
Subject: +1 QOTW
In-Reply-To: <Michael.J.Fromberger-60C414.09255723092006@localhost>
References: <1158942909.066705.245650@e3g2000cwe.googlegroups.com>
	<mailman.473.1158948412.10491.python-list@python.org>
	<Michael.J.Fromberger-60C414.09255723092006@localhost>
Message-ID: <ef6hip$uem$1@news.albasani.net>

Michael J. Fromberger wrote:
> In article <mailman.473.1158948412.10491.python-list at python.org>,
>  "Terry Reedy" <tjreedy at udel.edu> wrote:
> 
>> <olsongt at verizon.net> wrote in message 
>> news:1158942909.066705.245650 at e3g2000cwe.googlegroups.com...
>> > Did anyone else crack up when Larry Wall described python with the
>> > statement:
>> >
>> > Python, as the "anti-Perl," is heavily invested in maintaining Order.
>> >
>> > In the state of the onion address?
>> >
>> > http://www.perl.com/pub/a/2006/09/21/onion.html
>> 
>> There is also this:
>> 'But I think the basic Perl paradigm is "Whatever-oriented programming."'
> 
> But what this really means, in practise, is "dis-oriented programming."

I think now we got our QOTW.

Georg


From deets at nospam.web.de  Fri Sep 15 21:14:26 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 16 Sep 2006 03:14:26 +0200
Subject: how do you convert and array of doubles into floats?
In-Reply-To: <pan.2006.09.15.19.25.50.780916@gmx.net>
References: <1158342034.282295.144660@i3g2000cwc.googlegroups.com>
	<pan.2006.09.15.18.10.18.698711@gmx.net>
	<4n090tF88jknU1@uni-berlin.de>
	<pan.2006.09.15.19.25.50.780916@gmx.net>
Message-ID: <4n11fiF8acaaU1@uni-berlin.de>

>> AFAIK d and f are synonym for arrays, as python doesn't distinguish 
>> between these two on a type-level. And double it is in the end.
> 
> No `array.array` is really about "C compiler types".  You get C doubles in
> form of Python's `float` type if you read from the `array.array` but it's
> stored as C float and you can get the binary representation with the
> `tostring()` method.

I skimmed the docs of array and saw 'floating point' in both, assuming 
they were the same. Rereading them I actually recognized the "minimum 
size in bytes" column - and that is 4 for "f" and 8 for "double".

If I were in "pardoning" mode, I'd say "but minimum doesn't exclude the 
possibility of floats having 8 bytes" - but I'm not :) So, I stand 
corrected.

Thanks,

Diez


From wildemar at freakmail.de  Sun Sep 17 13:11:23 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sun, 17 Sep 2006 19:11:23 +0200
Subject: Hardlinks on NTFS
Message-ID: <450D81BB.20005@freakmail.de>

Hi :)

I'm thinking of letting my program create hardlinks (or symlinks). I 
know python allows doing this for ext, reiser and the like, but 
apparently not for ntfs systems.
Is there any package out there that lets me create links in a platform 
independent way?

bye
wildemar


From ptmcg at austin.rr._bogus_.com  Fri Sep 15 15:38:39 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 15 Sep 2006 19:38:39 GMT
Subject: Searching for patterns on the screen
References: <mailman.125.1158327884.10491.python-list@python.org>
	<37zOg.1954$vD2.787@tornado.texas.rr.com>
	<1158333401.286945.147870@b28g2000cwb.googlegroups.com>
Message-ID: <3jDOg.2106$vD2.2002@tornado.texas.rr.com>

"John Machin" <sjmachin at lexicon.net> wrote in message 
news:1158333401.286945.147870 at b28g2000cwb.googlegroups.com...
>
> Paul McGuire wrote:
>> "Jerry Hill" <malaclypse2 at gmail.com> wrote in message
>> news:mailman.125.1158327884.10491.python-list at python.org...
>> > Hello all,
>> As far as working just in Python, you could remove the tuple unpacking
>> inside removeColor, and shorten it to just:
>>
>> def removeColor(rgb):
>>     return rgb==(0,0,0)
>>
>> or even better:
>>
>> BLACK = (0,0,0)
>> def removeColor(rgb):
>>     return rgb==BLACK
>>
>> By defining BLACK once and just referring to it by name, you also avoid
>> dynamically constructing the (0,0,0) tuple in every call.
>
> Bzzzzzt. It's not dynamically constructed. Its a constant (in 2.4 at
> least)
>
> | >>> BLACK=(0,0,0)
> | >>> def func1(rgb):
> | ...    return rgb==BLACK
> | ...
> | >>> def func2(rgb):
> | ...    return rgb==(0,0,0)
> | ...
> | >>> import dis
> | >>> dis.dis(func1)
> |   2           0 LOAD_FAST                0 (rgb)
> |               3 LOAD_GLOBAL              1 (BLACK)
> |               6 COMPARE_OP               2 (==)
> |               9 RETURN_VALUE
> | >>> dis.dis(func2)
> |   2           0 LOAD_FAST                0 (rgb)
> |               3 LOAD_CONST               2 ((0, 0, 0))
> |               6 COMPARE_OP               2 (==)
> |               9 RETURN_VALUE
> | >>>
>
>
> C:\junk>python -mtimeit -s"BLACK=(0,0,0);rgb=(1,1,1)" "rgb==BLACK"
> 1000000 loops, best of 3: 0.129 usec per loop
>
> C:\junk>python -mtimeit -s"rgb=(1,1,1)" "rgb==(0,0,0)"
> 1000000 loops, best of 3: 0.127 usec per loop
>

Hunh!  It sure seems like I recently had to do something like this, and the 
value was rebuilt every time.  Perhaps I was building a "constant" list 
instead of a tuple...

>>> def fn(lst):
...    return lst == [1,1,1]
...
>>> import dis
>>> dis.dis(fn)
  2           0 LOAD_FAST                0 (lst)
              3 LOAD_CONST               1 (1)
              6 LOAD_CONST               1 (1)
              9 LOAD_CONST               1 (1)
             12 BUILD_LIST               3
             15 COMPARE_OP               2 (==)
             18 RETURN_VALUE
>>>

So tuples can be inlined as constants, but lists will be built on the fly.

-- Paul 




From http  Fri Sep 15 18:50:20 2006
From: http (Paul Rubin)
Date: 15 Sep 2006 15:50:20 -0700
Subject: Why not event-driven packages in other than the main thread?
References: <eeb6go$kfk$1@news.uit.no>
Message-ID: <7x1wqcn3rn.fsf@ruckus.brouhaha.com>

Tor Erik <torerik81 at gmail.com> writes:
> I've developed an application were I've used Tkinter for the GUI.
> When I ran the GUI in another thread than the main, it kept locking
> up.  I experienced similar problems with Twisted.

Tkinter is not thread-safe.  You have to synchronize any cross-thread
communication with it.  The way I usually do it is with an "after"
method that checks a communications queue (Queue.Queue object) every
20 msec or so.  Any communication to and from the gui thread is done
through the queue.  There is a recipe like this in the Python Cookbook
and you can probably find it at ASPN.


From deets at nospam.web.de  Fri Sep  1 13:58:33 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 01 Sep 2006 19:58:33 +0200
Subject: OO on python real life tutorial?
In-Reply-To: <1157131966.489586.210710@e3g2000cwe.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
Message-ID: <4lram9F3bg7qU1@uni-berlin.de>

filippo schrieb:
> thanks Fredrik and Claudio,
> 
> probably structured coding paradigm is what I need. Claudio, could you
> explain better your sentence below?
> 
> Claudio Grondi ha scritto:
>> Python/Tk for it in order to avoid programming in wxPython if not really
>> necessary (wxPython has its strengths with growing project sizes, but
>> yours is still far below the threshold).
> 
> I want to switch to wxpython because I don't like Tk too much. It is
> difficult sometimes to have full control of the widgets (i.e. focus
> sequence). Why do you think wxwidget is not suitable for low-medium
> size projects? Could you give me some practical examples of this?

You shouldn't take that advice too serious. He does not know much about 
your project, yet still he advices you to discard OO - that is just 
preposterous. His advice regarding the toolkit - well, you seem to have 
experienced difficulties in tk, so ditch it if you like.

While OO isn't the silver bullet, it certainly has its merits, and to be 
honest: I can't believe that there exist many 10k lines of code programs 
with database access and the like that don't gain from using OO principles.

Of course you can create data structures that fit your need - dicts and 
lists. But the least OO gives you is to name these, for better 
understanding. E.g.

class Hotel(object):
     def __init__(self, name):
         self.name = name

     def __str__(self):
         return "<Hotel: %s>" % self.name

which won't work better from a functional point of view than

{hotel_name = "Funny Horse House"}

But the type Hotel then introduces better readability, especially for 
others.

The very moment you have code that looks like this:


if  hotel["type"] == 'whatever':
     do_something_with_whatever(hotel)
else:
     do_something_with_rest(hotel)

overloading will come to use, and OO plays out its strength:

class Hotel(object):
     def __init__(self, name):
         self.name = name

     def __str__(self):
         return "<Hotel: %s>" % self.name

     def do_something(self):
         pass


class WhateverHotel(Hotel):
     def do_something(self):
         # we're doing something completely different here
         pass


Then you just do

hotel.do_something()

So the code hasn't to know anything about the possible differences in 
hotel types.

I've been doing an online hotel reservation system, btw, and I assure 
you: OO was very helpful, even in its crappy PHP incarnation.

Diez


From R.Brodie at rl.ac.uk  Mon Sep  4 11:49:31 2006
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Mon, 4 Sep 2006 16:49:31 +0100
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org><1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<mailman.10337.1157383940.27775.python-list@python.org>
Message-ID: <edhhub$m6d$1@south.jnrs.ja.net>


"km" <srikrishnamohan at gmail.com> wrote in message 
news:mailman.10337.1157383940.27775.python-list at python.org...

> if GIL doesnt go  then does it mean that python is useless for
> computation intensive scientific applications which are in need of
> parallelization in threading context ?

No. 




From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 05:39:45 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 11:39:45 +0200
Subject: grabbing random words
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
Message-ID: <4nkdn1Faj5doU2@individual.net>

Jay wrote:

> How would I be able to grab random words from an internet source. 
> I'd like to grab a random word from a comprehensive internet
> dictionary. What would be the best source and the best way to go
> about this?

The *best* source would be a function of the internet dictionary
that selects a random word and passes it to you. Otherwise you'd
have to read quite an amount of words, and select one yourself.

> (Sorry if this sounds/is super noobish.)

It's quite difficult to let readable and complete questions (also
with meaningful subject) sound noobish ;)

Regards,


Bj?rn

-- 
BOFH excuse #265:

The mouse escaped.



From steve at holdenweb.com  Sat Sep 16 13:39:08 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 16 Sep 2006 13:39:08 -0400
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <eehcqi$tll$1@sea.gmane.org>

nicolasfr at gmail.com wrote:
> Hi,
> 
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
> 
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info
> 
> This is a fresh new website, so there's not much on it, but I hope to
> make it grow quickly. Help and contributions are welcome; Please
> register and start posting your own documentation on it.
> 
While I am all in favor of improving Python's documentation I am not 
sure that fragmenting it in this way is a good idea. Couldn't you 
instead devote your efforts to improving the docs at docs.python.org? It 
is, after all, an open source project ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From gardner at networknow.org  Tue Sep  5 09:49:19 2006
From: gardner at networknow.org (Gardner Pomper)
Date: Tue, 5 Sep 2006 09:49:19 -0400
Subject: Finding name of variable?
Message-ID: <42d22dbf0609050649pe2c3cc3sdd0f577351d87b3f@mail.gmail.com>

Hi,

I am writing a specialized xml serialization function, and I would like to
be able to serialize the value of a simple object with the object name as
the tag. For example:

   first_name = 'Fred'

  sXML = my_xml_serializer(first_name)

should result in sXML = '<first_name>Fred</first_name>'

I can get class and field names, but how do I find the name of a simple
variable?

Thanks!

- Gardner
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From jaysherby at gmail.com  Wed Sep 13 23:46:22 2006
From: jaysherby at gmail.com (Jay)
Date: 13 Sep 2006 20:46:22 -0700
Subject: time-based point system
In-Reply-To: <0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
Message-ID: <1158205582.339882.23000@i3g2000cwc.googlegroups.com>

Okay, this is a game.  So the points are abstract.  It's like an arcade
game in respect to the points.  They don't actually mean or represent
anything.  The only point is to get a high score.  The idea is that the
faster the user acts (or reacts) the greater amount of points they'll
receive.  Simplified, I need a fuction or statement that takes in a
small number and spits out a big number.  The smaller the input, the
larger the output.


Erik Max Francis wrote:
> Jay wrote:
>
> > I'm writing a game script and the point system will be based upon time.
> >  The less time there is between event one and event two, the higher
> > score you'll get for event two.  However, I've got a problem figuring
> > how to do this.  Here's why.  I don't want the score system to just be
> > a straight charted system.  Y'know, like if the time is between x and y
> > then the points you get are z.  I want to mathematically figure out the
> > pointage.  That's what I can't figure out how to do.  If it were such
> > that the more time there is, the more points there are, that would be
> > easy.  I could just multiply the time by something or other.  Or, if
> > there was a time limit between the two events, that, too, would be easy
> > because I could subtract the amount of time spent from the possible
> > amount of time and multiply by something for points.  Neither of these
> > are the case.  Any suggestions?
>
> You haven't indicated what _is_ the case, so this question cannot yet be
> answered.  You have to specify what the points measure, how they measure
> it, and how they change over time.  Once you do that, you can define (or
> get help defining) how to calculate them.  As it is you've not given
> nearly enough information to answer your question.
>
> --
> Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
>   San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis
>    Get married, but never to a man who is home all day.
>     -- George Bernard Shaw



From gagsl-py at yahoo.com.ar  Mon Sep 25 22:00:56 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 25 Sep 2006 23:00:56 -0300
Subject: IDLE - Customizing output format
In-Reply-To: <ef6ut6$61r$1@sea.gmane.org>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<ef6ut6$61r$1@sea.gmane.org>
Message-ID: <7.0.1.0.0.20060925225302.040da020@yahoo.com.ar>

At Sunday 24/9/2006 18:55, Robert Kern wrote:

>Anyways, against my better judgement, I will tell you that you can 
>customize the
>output by replacing sys.displayhook with your own function:
>
>    http://www.python.org/doc/current/lib/module-sys.html
>
>  >>> import sys
>  >>> def f(obj):
>         print '    ' + repr(obj)
>  >>> sys.displayhook = f

Sometimes I enable a similar approach on my sitecustomize.py, using 
the pprint module. But I don't *always* like the output format.


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From frode.list at yahoo.no  Sun Sep 24 01:30:33 2006
From: frode.list at yahoo.no (Frode)
Date: 23 Sep 2006 22:30:33 -0700
Subject: grabbing random words
In-Reply-To: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
Message-ID: <1159075833.690483.291490@k70g2000cwa.googlegroups.com>

Jay wrote:
> How would I be able to grab random words from an internet source.  I'd
> like to grab a random word from a comprehensive internet dictionary.
> What would be the best source and the best way to go about this?

Here's a source that gives you a random word:
http://www.zokutou.co.uk/randomword/

Frode



From Mark.Geyzer at gmail.com  Sat Sep 23 14:20:10 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 23 Sep 2006 11:20:10 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159034690.382602.256590@m7g2000cwm.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
	<1159034690.382602.256590@m7g2000cwm.googlegroups.com>
Message-ID: <1159035610.860068.14330@m7g2000cwm.googlegroups.com>


Gerard Flanagan wrote:
> volcano wrote:
> > Hello, folks!
> > A trivial question - I have a working Python script that I have to
> > invoke from C++ code. No fancy stuff - just run the whole script with
> > its parameters. No callbacks, no signalling - nada, just
> > stupid,primitive, straightforward call.
> >
> > And while there is a lot of help on embedding, I could not find out how
> > to run script as a whole.SOS!!!!
>
> In C#:
>
> http://groups.google.com/group/comp.lang.python/browse_frm/thread/da2a675da29b0bd/197b6a89095ef930?lnk=st&q=&rnum=4#197b6a89095ef930
>
> hth
>
> Gerard

Thanks for fast response, alas - it did not!
My problem is - application in C++ used to use external application,
which does not work well. So I sort of reproduced the functionality in
Python script, but now I am stuck, unable to run it properly.



From george.sakkis at gmail.com  Mon Sep  4 15:48:29 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 4 Sep 2006 12:48:29 -0700
Subject: Test for number?
References: <1157390891_40515@sp6iad.superfeed.net>
Message-ID: <1157399309.305809.76610@74g2000cwt.googlegroups.com>

Dr. Pastor wrote:

> In the following code I would like to ascertain
> that x has/is a number. What the simplest TEST should be?
> (Could not find good example yet.)
> ---
> x=raw_input('\nType a number from 1 to 20')
> if TEST :
> 		Do_A
> else:
> 		Do_B
> ---
> Thanks for any guidance.

x=raw_input('\nType a number from 1 to 20')
try:
    x = int(x)
    if x<1 or x>20: raise ValueError()
except ValueError:
    Do_B
else:
    Do_A


If you want to distinguish between the two error cases (not a number vs
number not in [1,20]), handle the second one as "Do_C" instead of
raising ValueError.

HTH,
George



From simon at arrowtheory.com  Tue Sep 19 19:43:17 2006
From: simon at arrowtheory.com (Simon Burton)
Date: 19 Sep 2006 16:43:17 -0700
Subject: find class where method was defined ?
In-Reply-To: <1158708758.721787.232600@i3g2000cwc.googlegroups.com>
References: <1158708758.721787.232600@i3g2000cwc.googlegroups.com>
Message-ID: <1158709397.071083.311880@b28g2000cwb.googlegroups.com>


def methclass(meth):
    cls = meth.im_class
    name = meth.im_func.__name__
    meth = getattr(cls,name,None)
    for cls in cls.mro():
        _meth = getattr(cls,name,None)
        if _meth is not None and _meth==meth:
            result = cls
    return result


>>> methclass(b.foo)
<class '__main__.A'>


(Turns out equality bypasses the methodwraper trickery.)

Simon.



From fredrik at pythonware.com  Sun Sep 24 07:41:01 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 13:41:01 +0200
Subject: Regular expression confusion
In-Reply-To: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>
References: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>
Message-ID: <ef5qsc$4g0$1@sea.gmane.org>

York wrote:

> I have two backslash - a. and I want to replace them with one backslash, 
> but I failed:
> 
>  >>> import re
>  >>> a = '\\\\'
>  >>> re.sub(r'\\\\', '\\', '\\\\')

John has already sorted the RE-specific part of the problem, but it's 
also worth noting that using the RE engine for literal strings is over-
kill; an ordinary replace is easier to use and faster:

     >>> a = "\\\\"
     >>> a.replace("\\\\", "\\")
     '\\'

</F>



From Eric_Dexter at msn.com  Tue Sep 19 20:14:30 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 19 Sep 2006 17:14:30 -0700
Subject: newbe's re question
Message-ID: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>

All I am after realy is to change this

 reline = re.line.split('instr', '/d$')

into something that grabs any line with instr in it take all the
numbers and then grab any comment that may or may not be at the end of
the line starting with ; until the end of the line including white
spaces..  this is a corrected version from

http://python-forum.org/py/viewtopic.php?t=1703

thanks in advance the hole routine is down below..






[code]
def extractCsdInstrument (input_File_Name, output_File_Name,
instr_number):

    "takes an .csd input file and grabs instr_number instrument and
creates output_File_Name"
    f = open (input_File_Name , 'r')                #opens file passed
in to read
    f2 = open (output_File_Name, 'w')               #opens file passed
in to write
    instr_yes = 'false'                             #set flag to false

    for line in f:                                  #for through all
the lines
      if "instr" in line:                           #look for instr in
the file
           if instr_yes == 'true':                    #check to see if
this ends the instr block
               break                                #exit the block

           reline = re.line.split('instr', '/d$')     #error probily
split instr and /d (decimal number into parts) $ for end of line
           number = int(reline[1])                  #convert to a
number maybe not important
                if number == instr_number:            #check to see if
it is the instr passed to function
                instr_yes = "true":                 #change flag to
true because this is the instr we want
      if instr_yes = "true":                        #start of code to
copy to another file
           f2.write(f.line)                         #write line to
output file

    f.close                                         #close input file
    f2.close          

[/code]



From fredrik at pythonware.com  Thu Sep 21 04:04:03 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 21 Sep 2006 10:04:03 +0200
Subject: Do we need to delete "ImageDraw.Draw" after using it?
In-Reply-To: <ees5rj$gkr$1@sea.gmane.org>
References: <1158773966.613009.11470@e3g2000cwe.googlegroups.com>
	<ees5rj$gkr$1@sea.gmane.org>
Message-ID: <eeth1j$pbr$2@sea.gmane.org>

Steve Holden wrote:

>> Is there any general rule that we must delete the object after using
>> it?
>>
> Just consider it good hygiene.

in this specific case, it may not be obvious for the casual reader that 
the global "draw" variable will contain an indirect reference to the 
original image object, so even if you throw away (or replace) the "im" 
variable with something else, the original image will still be present
in memory.

if you put the same code inside a function, you can safely leave the 
garbage handling to Python.

</F>



From duncan.booth at invalid.invalid  Mon Sep 25 10:25:51 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 14:25:51 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
Message-ID: <Xns98499CF9DCEE4duncanbooth@127.0.0.1>

Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:

> In article <Xns984996E6BABCEduncanbooth at 127.0.0.1>, Duncan Booth
> wrote: 
>> It is generally a principle of Python that new releases maintain
>> backward compatability. An incompatible change such proposed here
>> would probably break many tests for a large number of people.
> 
> Why is the suggested change incompatible? What code would it break?
> I agree that it would be a bad idea if it did indeed break backwards
> compatibility - but it doesn't.

I guess you've never seen anyone write tests which retrieve some generated 
html and compare it against the expected value. If the page contains any 
unescaped quotes then this change would break it.

> 
>> There should be a one-stop shop where I can take my unicode text and 
>> convert it into something I can safely insert into a generated html
>> page; 
> 
> I disagree. I think that doing it in one is muddled thinking and
> liable to lead to bugs. Why not keep your output as unicode until it
> is ready to be output to the browser, and encode it as appropriate
> then? Character encoding and character escaping are separate jobs with
> separate requirements that are better off handled by separate code.

Sorry, convert into something I can safely insert wasn't meant to imply 
encoding: just entity escaping.

To be clear:

I'm talking about encoding certain characters as entity references. It 
doesn't matter whether its the character ampersand or right double quote, 
they both want to be converted to entities. Same operation.

The resulting string might be a byte string or it might still be unicode: 
the point being that the conversion I want is from unescaped to entity 
escaped, not from unicode to byte encoded. Right now the only way the 
Python library gives me to do the entity escaping properly has a side 
effect of encoding the string. I should be able to do the escaping without 
having to encode the string at the same time.


From franz.steinhaeusler at gmx.at  Thu Sep 14 09:03:57 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Thu, 14 Sep 2006 15:03:57 +0200
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<48iig2hl4h93vmp70t62gnoslfqkitso64@4ax.com>
	<mailman.89.1158237914.10491.python-list@python.org>
Message-ID: <fjkig2lmvcdlc2ouq15e3q2hndbtra0rko@4ax.com>

On Thu, 14 Sep 2006 20:45:11 +0800, limodou <limodou at gmail.com> wrote:

>>
>These things UliPad also can do. And it also support html, javascript,
>css, java, etc syntax highlight. UliPad also support Input Assistant,
>even include custom calltips and auto-complete, and many features, you
>can find in http://wiki.woodpecker.org.cn/moin/UliPad
>
>It also has a directory browser, wizard, plugins-system, code snippets
>manage. Just using it, you'll find out what it's.


Of course, I took only randomly three programs for easier comparing.


From aahz at pythoncraft.com  Mon Sep 11 17:37:34 2006
From: aahz at pythoncraft.com (Aahz)
Date: 11 Sep 2006 14:37:34 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07> <ee3vme$cjj$1@panix3.panix.com>
	<65sk091eu0l3.axwa5wrm2dtq.dlg@40tude.net>
	<HliNg.2734$No6.53788@news.tufts.edu>
Message-ID: <ee4kuu$sos$1@panix3.panix.com>

In article <HliNg.2734$No6.53788 at news.tufts.edu>,
John Salerno  <johnjsal at NOSPAMgmail.com> wrote:
>Thorsten Kampe wrote:
>.
>> But sqlite is not "pure Python" because it's just a wrapper around
>> sqlite (which has to be installed separately)...
>
>But that's the point. Once 2.5 is released, sqlite is built-in. Unless 
>there's more to it that I don't know, and something must still be 
>installed? But that makes no sense.

2.5 will include the sqlite library itself on Windows (and Macs? I
forget) but you need the to install the library separately on Linux
boxes, which is generally about as complicated as apt-get install
sqlite-dev.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From MonkeeSage at gmail.com  Wed Sep 20 08:39:05 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 20 Sep 2006 05:39:05 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>
	<1158679802.962227.15200@b28g2000cwb.googlegroups.com>
	<1158683411.737232.42380@b28g2000cwb.googlegroups.com>
	<1158686571.184132.273190@h48g2000cwc.googlegroups.com>
	<1158753258.429101.298260@h48g2000cwc.googlegroups.com>
Message-ID: <1158755945.357922.34100@i42g2000cwa.googlegroups.com>

Ilias Lazaridis wrote:
> no, I don't know it.

OK...so how do you evaluate a language when you don't know its basic
operations? Hmmm, sounds fishy.

> how do I define something into the top-level namespace? I assume I
> could place it into the root-package of my project, into the __init__
> function.
>
> But how do I place it within my computers python installation (the big
> init)?

When you just say:

def blah(): pass

Now 'blah' function is in the top-level namespace, just like global
variables. Or if it's in a different file, you'd say 'from blah import
*'. You honestly don't know this?!??

> I am aware of this technique.
>
> But I want to modify existent classes, without touching their code.

The only way to do this is to explicitly subclass the existent classes
with your own class and modify what you want there in your subclass
(see below), or use multiple inheritence as I suggested previously.

> I've noticed some interesting code on you website:
>
> "
> class file(file):
>   def reopen(self, name=None, mode='w', bufsize=None):
> ...
>
> fh = file('test.txt', 'rb')
> print fh # <open file 'test.txt', mode 'rb' at 0xb7c92814>
> fh.reopen(mode='wb')
> "
> http://rightfootin.blogspot.com/2006/09/ruby-reopen.html
>
> does this mean that I can add a method to a class in a similar way with
> ruby? (by using class class-name(class-name): )

Basically, yes. In ruby you can reopen base classes; in python you can
get the same effect by subclassing the base classes with the same name
as the base class, then instantiating all your objects as that class.
This is the exact same idea as a "super-duper super class" as I
mentioned above.

> but the limitation is that I cannot do this with the python build-in
> types?:
>
> http://rightfootin.blogspot.com/2006/08/of-rocks-and-reptiles.html

You can subclass buit-in types using the same name as the parent class.
In fact here is what I use:

## my little library to make python more OO
## i.e., to get rid of the top-level junk...
## or at least to hide it behind some pretty
## object attributes :)
##
## YMMV - and don't complain if you don't
## like it; I wrote it for ME, not you
##
## Jordan Callicoat < MonkeeSage at gmail.com >

## some global methods so we can use them
## to set up the class methods
def rpr(self):
  return str(repr(self))
def stri(self):
  return str(self)
def inte(self):
  return int(self)
def leng(self):
  return int(len(self))
def say(self):
  print(self)
  return self
def joi(self, sep=''):
  return str(sep.join(self))
def ma(self, m):
  return list(map(m, self))
def filt(self, m):
  return list(filter(m, self))
def redu(self, m):
  return list(reduce(m, self))


## now build all the subclasses
class int(int):
  """
  Wrapper class for +int+
  Provided methods:
    str(), int(), repr(), say(),
    len(), plus(), minus(),
    times(), divided_by()
  """
  def plus(self, i):
    return int(self + i)
  def minus(self, i):
    return int(self - i)
  def times(self, i):
    return int(self * i)
  def divided_by(self, i):
    return int(self / i)

int.str  = stri
int.repr = rpr
int.len  = leng
int.int  = inte
int.say  = say

class str(str):
  """
  Wrapper class for +str+
  Provided methods:
    str(), int(), repr(), say(),
    len(), plus(), times()
  """
  def plus(self, s):
    return str(self + s)
  def times(self, i):
    return str(self * i)

str.str  = stri
str.repr = rpr
str.len  = leng
str.int  = inte
str.say  = say

class list(list):
  """
  Wrapper class for +list+
  Provided methods:
    str(), int(), repr(), say(),
    len(), plus(), times(), join()
  """
  def plus(self, l):
    return list(self + l)
  def times(self, i):
    return list(self * i)

list.str    = stri
list.repr   = rpr
list.len    = leng
list.say    = say
list.join   = joi
list.map    = ma
list.filter = filt
list.reduce = redu

class tuple(tuple):
  """
  Wrapper class for +tuple+
  Provided methods:
    str(), int(), repr(), say(),
    len(), plus(), times(), join()
  """
  def plus(self, l):
    return tuple(self + l)
  def times(self, i):
    return tuple(self * i)

tuple.str    = stri
tuple.repr   = rpr
tuple.len    = leng
tuple.say    = say
tuple.join   = joi
tuple.map    = ma
tuple.filter = filt
tuple.reduce = redu

class dict(dict):
  """
  Wrapper class for +dict+
  Provided methods:
    str(), int(), repr(), say(),
    len()
  """
  pass

dict.str  = stri
dict.repr = rpr
dict.len  = leng
dict.say  = say
dict.join = joi


## done with the global methods, remove them
del(rpr, stri, inte, say, joi, ma, filt, redu)


## show examples if called standalone
if (__name__ == '__main__'):
  i = int(5)
  n = i + 5
  n.say()
  i = i.times(5).divided_by(3).plus(2)
  i.str().int().str().repr().say()

  s = 'Tree'
  i = str(s)
  i = i.plus(' and dog\n').times(2)
  i.repr().say()

  def test(item):
    return '%s!' % item
  l = ['test', 'this', 'out', 'now']
  i = list(l)
  i = i.times(2)
  i.join(' ').say()
  i.map(test).say()

  t = ('test', 'this', 'out', 'now')
  i = tuple(t)
  i = i.plus(('hi', 'there'))
  i.join('+').repr().say()
  i.map(test).say()

  d = {'test': 'this', 'out': 'now'}
  i = dict(d)
  i.len().say()

It's not the most "pythojnic" way to do things, but it works for me.

Ps. I still have a hard time belieiving that after all the time you've
spent on comp.lang.lisp, comp.lang.ruby and comp.lang.python you still
don't understand these basic concepts...if that's really true, I would
never use your consulting service!

Regards,
Jorda



From flyingisfun1217 at gmail.com  Sat Sep 30 23:15:43 2006
From: flyingisfun1217 at gmail.com (flyingisfun1217 at gmail.com)
Date: 30 Sep 2006 20:15:43 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <mailman.917.1159509227.10491.python-list@python.org>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<451A314F.3060703@isy.liu.se>
	<mailman.815.1159378067.10491.python-list@python.org>
	<1159395485.824735.319090@b28g2000cwb.googlegroups.com>
	<1159419097.556600.160750@k70g2000cwa.googlegroups.com>
	<1159488825.144496.86610@c28g2000cwb.googlegroups.com>
	<mailman.917.1159509227.10491.python-list@python.org>
Message-ID: <1159672543.243321.18760@b28g2000cwb.googlegroups.com>

Sorry about that.

As far as I can tell, its not anything to do with your code. I think
its something with tkinter modules. Sorry about misleading you.

Thanks for the help, I'm sure you'll hear from me soon again. In
fact...

FlyingIsFun1217



From ask at me  Mon Sep  4 16:02:06 2006
From: ask at me (alf)
Date: Mon, 04 Sep 2006 16:02:06 -0400
Subject: testing for valid reference: obj vs. None!=obs vs. obj is not None
Message-ID: <AvmdnddyXfF9DGHZnZ2dnUVZ_oOdnZ2d@comcast.com>

Hi,

I have a reference to certain objects. What is the most pythonic way to 
test for valid reference:

	if obj:

	if None!=obs:

	if obj is not None:

-- 
alfz1


From amit.man at gmail.com  Mon Sep 11 07:42:17 2006
From: amit.man at gmail.com (noro)
Date: 11 Sep 2006 04:42:17 -0700
Subject: efficient text file search.
In-Reply-To: <45054921$0$4526$e4fe514c@news.xs4all.nl>
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
	<45054921$0$4526$e4fe514c@news.xs4all.nl>
Message-ID: <1157974937.286653.5500@h48g2000cwc.googlegroups.com>

:)

via python...

Luuk wrote:
> "noro" <amit.man at gmail.com> schreef in bericht
> news:1157973527.817462.207420 at h48g2000cwc.googlegroups.com...
> > Is there a more efficient method to find a string in a text file then:
> >
> > f=file('somefile')
> > for line in f:
> >    if 'string' in line:
> >         print 'FOUND'
> >
>
>
> yes, more efficient would be:
> grep (http://www.gnu.org/software/grep/)



From lycka at carmen.se  Wed Sep 27 05:27:48 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 27 Sep 2006 11:27:48 +0200
Subject: I need some tips to begin a simple project
In-Reply-To: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>
References: <1158671954.274003.256620@i42g2000cwa.googlegroups.com>
Message-ID: <efdg6k$ab3$1@wake.carmen.se>

dutche wrote:
> Hi, I'm new in Python and I'm learning with "Learning Python" oreilly's
> book which is very good written and explanatory.

You're not saying how new you are to programming (particularly
GUI programming) in general. Python itself is probably not the
tricky part here.

> And I can use some other graphical interface, like OpenGL? Or with
> PyGame I can do an animattion like zooming the icon image when hover?

It seems to me that PyGame might be a candidate for the kind of stuff
you want to do, although I'm no expert in that. I'd download it and
play with it. There are some PyGame tutorials and example code to
get you started.

Good Luck!


From tim.golden at viacom-outdoor.co.uk  Wed Sep  6 04:43:30 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 6 Sep 2006 09:43:30 +0100
Subject: a Pywin Outlook adress Book Question
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B410@vogbs009.gb.vo.local>

[Kai Mayfarth]

| Ist there a way to search a Adressbook over Python for a 
| special contact.
| I know how i read and write a contact, but know i have to search over 
| Python for some contacts, because the adress book has know over 1700 
| entrys, and it tooks a long time to get them all over the Com 
| object to 
| python.

As far as I can see from a quick glance, there is no method
of the AddressList or AddressEntries objects which calls into
the Outlook code itself to search, so you seem to be stuck
with iterating over all the AddressEntry items until you find
the one you want. From what you say above you already know
how to do that.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From tim at tdw.net  Mon Sep 11 12:10:56 2006
From: tim at tdw.net (Tim Williams)
Date: Mon, 11 Sep 2006 17:10:56 +0100
Subject: best way of testing a program exists before using it?
In-Reply-To: <W52087337.337.12601.3@mx-extra>
References: <45057B5E.7010306@googlemail.com> <ee3urn$ane$1@sea.gmane.org>
	<W52087337.337.12601.3@mx-extra>
Message-ID: <9afea2ac0609110910lf762f6ft6672b6dc092e5deb@mail.gmail.com>

On 11/09/06, Hari Sekhon <hpsekhon at googlemail.com> wrote:
>
>  Steve Holden wrote:
>  Hari Sekhon wrote:
>
>
>  The easiest way to test whether the command will run is to try and run
> it. If the program doesn't exist then you'll get an exception, which you
> can catch. Otherwise you'll be stuck with non-portable mechanisms for
> each platform anyway ...
>
> regards
>  Steve
>
>
>  Yeah, this occurred to me just after I sent the mail, but I don't really
> want to run the program because it will go off and do some work and take
> time to come back. If there is a better way then that would be great. I
> can't think of anything other than what you have suggested with a message
> saying that the program wasn't found in the path which would be the most
> appropriate error since the path could also be wrong.


If you run your wrapper and the program exists then you don't have to
test for it,  so the overall process is quicker and cleaner than
testing-for *then* running the program

If you run your wrapper and the program doesn't exist, then you have
performed your "if exists"  test without extra code and with very
little processing, and the raised exception will lead you nicely into
your "not exists" scenario.

try:
    run_somecommand
except:
    print "you don't have %s installed" % somecommand


HTH :)


From thomas at eforms.co.nz  Sun Sep 24 23:22:21 2006
From: thomas at eforms.co.nz (Thomas Thomas)
Date: Mon, 25 Sep 2006 15:22:21 +1200
Subject: Outlook Addin and py2exe: 2 problems
Message-ID: <007801c6e051$d27a48c0$3d6ea8c0@eformswin2>

I recenlty had the same issue, but clearing the build directory and rebuilding again fixed the issue for me
-------------- next part --------------
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From rob.clewley at gmail.com  Sat Sep 23 12:54:54 2006
From: rob.clewley at gmail.com (Rob Clewley)
Date: Sat, 23 Sep 2006 12:54:54 -0400
Subject: ANN: PyDSTool v0.83.3 released
Message-ID: <a749952d0609230954s7c261e8ahe3bc4b50dc38bba5@mail.gmail.com>

We are pleased to announce version 0.83.3 of our open-source
simulation, modeling, and analysis package PyDSTool. New features
include improved graphical capabilities in the PyCont bifurcation and
continuation sub-package and its interface with AUTO, and better
support for domain & bound enforcement on state variables and
parameters. There are several bug fixes and general improvements to
the API in this release too.

Please see http://pydstool.sourceforge.net for details and documentation.

Regards,

          Rob, Drew, and Erik.
          Center for Applied Mathematics,
          Cornell University.

                                     **********

PyDSTool is an integrated simulation, modeling and analysis package
for dynamical systems, written in Python (and partly in C). It is
being developed at Cornell University, and the source code is
available under the terms of the BSD license. PyDSTool runs on Linux,
Windows, and Macs, and aims to have a minimal number of package
dependencies. Currently, it requires (old) SciPy, Numarray, and
Matplotlib.


From onurb at xiludom.gro  Mon Sep 18 09:59:16 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 18 Sep 2006 15:59:16 +0200
Subject: Automatically installing libraries?
In-Reply-To: <WlxPg.8305$4a3.6056@trnddc07>
References: <WlxPg.8305$4a3.6056@trnddc07>
Message-ID: <450ea635$0$17163$626a54ce@news.free.fr>

Chaz Ginger wrote:
> Here is a problem I am trying to solve; I am sure there must be an easy
> way to do it and I just don't know how.
> 
> I have a rather large application that I am writing. To make it easy for
> the user to run I have them run a startup.py script. This script will
> try to load each of the third party libraries the application will need.
> If it is present, great. If it isn't, I would like to automatically
> install it. This is the heart of my problem: is there a Python
> equivalent to PERL's CPAN?

Not quite. But you should definitively have a look at setuptools before
proceeding to reinventing the SquareWheel(tm):

http://peak.telecommunity.com/DevCenter/setuptools


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From bj_666 at gmx.net  Fri Sep 22 09:45:00 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 22 Sep 2006 15:45:00 +0200
Subject: unicode mystery/problem
References: <1158774055.273842.24200@m7g2000cwm.googlegroups.com>
	<1158789886.997992.261940@i3g2000cwc.googlegroups.com>
	<mailman.453.1158927918.10491.python-list@python.org>
Message-ID: <pan.2006.09.22.13.44.59.190756@gmx.net>

In <mailman.453.1158927918.10491.python-list at python.org>, Petr Jake?
wrote:

> I have try to experiment with the code a bit.
> the simplest code where I can demonstrate my problems:
> #!/usr/bin python
> import sys
> print "default", sys.getdefaultencoding()
> print "stdout", sys.stdout.encoding
>    
> a=['P\xc5\x99\xc3\xad','Petr Jake\xc5\xa1']
> b="my nice try %s" % ''.join(a).encode("utf-8")

You have two byte strings in the list `a` and try to *encode* them as
utf-8.  That does not work.  You can make the example even a bit simpler::

 'P\xc5\x99\xc3\xadPetr Jake\xc5\xa1'.encode('utf-8')

You cant't *encode* byte strings, just *decode* them.  What happens is
that Python tries to make a unicode string from the byte string to encode
that in utf-8.  But it decodes as ASCII as that is the default.

Don't mix byte strings and unicode strings.  Put an encoding declaration
at the top of your file and convert everything to unicode on the "way in"
and to the proper encoding on the "way out" of your program.

Ciao,
	Marc 'BlackJack' Rintsch


From duncan.booth at invalid.invalid  Wed Sep 13 05:08:25 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 13 Sep 2006 09:08:25 GMT
Subject: Inter process signalling
References: <GxBNg.6611$Dj4.5066@fe11.usenetserver.com>
Message-ID: <Xns983D66FE66013duncanbooth@127.0.0.1>

Dale Strickland-Clark <dale at riverhall.nospam.co.uk> wrote:

> In Linux this is easy with 'signal' and 'kill' but how can I get one
> Python process to signal another (possibly running as a service)? 
> 
> All I need is a simple prod with no other data being sent and none
> being returned - except that the signal was delivered.
> 
> Receiving a signal should generate an interrupt. I'm not looking for a
> solution the involves polling.
> 
Lots of ways. Basically all involving creating a thread which waits on an 
event and then calls your code when the event is generated.

You can use semaphores, named pipes &c.; you could create a windows message 
queue and simply send the process a message when you want to alert it; you 
could create a COM server and call a method on it; you could use 
asynchronous procedure calls (APCs) (but you still need to ensure that 
there is a thread in an alertable wait state).

If the code you want to signal is running as a service then the easiest way 
to signal it is to call win32service.ControlService with a user defined 
service code. That gives you 127 signals to play with, and Python's win32 
library will simply call the SvcOther method within your service code 
(although not of course using the same thread as the actual service is 
running on).


From toby at tobiah.org  Wed Sep 27 14:36:53 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 11:36:53 -0700
Subject: optparse docs
Message-ID: <451ab7f6$0$19636$88260bb3@free.teranews.com>

In
	http://docs.python.org/lib/optparse-terminology.html

The GNU project introduced "-" followed by a series of hyphen-separated 
words, e.g. "-file" or "-dry-run". These are the only two option 
syntaxes provided by optparse.

And later:

Some other option syntaxes that the world has seen include:

     * a hyphen followed by a few letters, e.g. "-pf" (this is not the 
same as multiple options merged into a single argument)

     * a hyphen followed by a whole word, e.g. "-file" (this is 
technically equivalent to the previous syntax, but they aren't usually 
seen in the same program)

So my question is whether the first 'GNU' version, was not meant to be
--file, and --dry-run?

Thanks,

Toby

-- 
Posted via a free Usenet account from http://www.teranews.com



From __peter__ at web.de  Wed Sep 20 03:13:33 2006
From: __peter__ at web.de (Peter Otten)
Date: Wed, 20 Sep 2006 09:13:33 +0200
Subject: include statement
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
	<mailman.314.1158733422.10491.python-list@python.org>
	<1158735048.114574.56190@e3g2000cwe.googlegroups.com>
Message-ID: <eeqpk8$r3s$01$1@news.t-online.com>

joakim.hove at gmail.com wrote:

> Thanks to all who took time to answer!
> 
> 
>> > is it possible in python to include another python source file into the
>> > current namespace, i.e.completely analogous to the #include statement
>> > in C.
> 
> [...]
> 
>> Tell us why you are contemplating such a thing, and someone
>> here will help you implement it the "Pythonic" way.
> 
> My application has a configuration file where lots of variables are
> set. (The configuration file is python source, so there is no
> home-brewed parsing involved.) The configuration file is starting to
> get quite large and unwieldy, so for this reason I would like to split
> it in several files.
> 
> I know I could do:
> from configA import *
> from configB import *
> 
> But I felt that the import statemant was 'more' than I wanted. Maybe I
> am just pedantic.

Maybe you like execfile() which would allow you to collect the configuration
files without the need for them to be reachable through the import
mechanism.

pattern = os.path.expanduser("~/.herron/config*.py")

for fn in glob.glob(pattern):
    execfile(fn)

# objects in the config*.py files now
# share one namespace.

Peter


From haraldarminmassa at gmail.com  Wed Sep 27 08:34:54 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 27 Sep 2006 05:34:54 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159360494.355347.102850@i42g2000cwa.googlegroups.com>

walterbyrd,

Answer: Yes. Definitely. And, to be correct, there are some who earn a
rather comfortable living programming in Python.

> If so, I doubt there are many.

depending on your definition of "many". if "many" is something around
"1% of population of earth", you are right.

If "many" is "more than 1000", than you are wrong.

I formyself earn the major part of my income doing Python - combined
with database knowledge, of course.


> I wonder why that is?
There seems to be a challenge to have more people programm Python: to
hire people with Python knowledge. Maybe the recruiters of Google can
enlighten you on the prospects of Python programmers on the market :)

Java is educated in a kind of vocational training in universities; but
at the moment only the elite gets in touch with Python.

Harald



From hg at nospam.com  Wed Sep 20 14:27:31 2006
From: hg at nospam.com (hg)
Date: Wed, 20 Sep 2006 13:27:31 -0500
Subject: Looking for a reports module/project
In-Reply-To: <mailman.342.1158774643.10491.python-list@python.org>
References: <mailman.342.1158774643.10491.python-list@python.org>
Message-ID: <VQfQg.196$Go3.15@dukeread05>

John Purser wrote:
> Hello,
> 
> I'm working on a script to gather data from our servers and then present
> the data as part of daily maintenance.  Pretty straight forward stuff.
> However one of the limitations of an earlier design was presentation of
> the data so I'm working to make this version's report much clearer.  I
> hate to cut a bunch of single purpose code.  Before I wander down this
> road too far I thought I'd ask if anyone else has found a good module or
> project for writing simple text reports with python.
> 
> Thanks for the recommendations.
> 
> John Purser
> 


wxPython and htmlgen



From cooldudevamsee at gmail.com  Tue Sep 12 11:18:41 2006
From: cooldudevamsee at gmail.com (cooldudevamsee at gmail.com)
Date: 12 Sep 2006 08:18:41 -0700
Subject: Clarify Regex in Python.
In-Reply-To: <mailman.346.1158066013.5279.python-list@python.org>
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
	<mailman.341.1158063739.5279.python-list@python.org>
	<1158064674.441245.165610@d34g2000cwd.googlegroups.com>
	<mailman.346.1158066013.5279.python-list@python.org>
Message-ID: <1158074321.094887.226290@h48g2000cwc.googlegroups.com>

k, people, thanks for ur replys.



From jordan.taylor2 at gmail.com  Mon Sep 11 15:01:36 2006
From: jordan.taylor2 at gmail.com (Jordan)
Date: 11 Sep 2006 12:01:36 -0700
Subject: Running python from a usb drive
In-Reply-To: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
Message-ID: <1158001296.005787.317950@m73g2000cwd.googlegroups.com>

If making a usb version of python was that easy, movable python would
be open source.  Check out http://www.voidspace.org.uk/python/movpy/ if
you need a portable usb version of python for work or something.
Copying the Python24 directory is a good start, but doesn't include the
enormous number of registry keys that are included in the install and
are probably needed for the complete capabilites of python.  I really
hope I didn't missunderstand what you were asking about -_-;
Environmental Variables? Try setting the user/system variable
"pythonpath"
cjl wrote:
> Hey:
>
> I am trying to run python from a usb drive under windows xp. I
> installed python "for this user" on to a machine, then copied the
> entire Python24 directory to the usb drive.
>
> I have the following in a batch file at the root of the drive:
>
> @path=%PATH%;%CD%Python24;%CD%Python24\libs;%CD%Python24\Scripts;%CD%Python24\Lib\site-packages;%CD%Python24\DLLs
> @set pythonpath = %CD%Python24
> @cmd
>
> When I double click the file and type 'python' at the prompt I am in a
> working python environment, and I am able to import modules in the
> site-packages directory (in this case, django).
>
> However, when I run a script directly from the cmd prompt (in this case
> 'django-admin.py' the script runs, but fails to import modules from the
> site-packages directory.
>
> Is there a command line option to python.exe or an environment variable
> I can set to remedy this?
> 
> Any other thoughts?
> 
> Thanks in advance,
> CJL



From http  Tue Sep  5 21:49:14 2006
From: http (Paul Rubin)
Date: 05 Sep 2006 18:49:14 -0700
Subject: threading support in python
References: <mailman.53.1157506527.5279.python-list@python.org>
Message-ID: <7xzmddojc5.fsf@ruckus.brouhaha.com>

Jean-Paul Calderone <exarkun at divmod.com> writes:
> >which more explicitly shows the semantics actually desired.  Not that
> >"huge" a benefit as far as I can tell.  Lisp programmers have gotten
> >along fine without it for 40+ years...
> 
> Uh yea.  No lisp programmer has ever written a with-* function... ever.

The context was Lisp programmers have gotten along fine without
counting on the refcounting GC semantics that sjdevnull advocates
Python stay with.  GC is supposed to make it look like every object
stays around forever, and any finalizer that causes an explicit
internal state change in an extant object (like closing a file or
socket) is not in the GC spirit to begin with.


From steve at holdenweb.com  Fri Sep  8 06:15:46 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 08 Sep 2006 11:15:46 +0100
Subject: how do you get the name of a dictionary?
In-Reply-To: <1157707489.119939.136720@m79g2000cwm.googlegroups.com>
References: <1155926079.935209.21120@p79g2000cwp.googlegroups.com>	<1156268752.574983.123520@75g2000cwc.googlegroups.com>	<pan.2006.08.22.20.05.58.528777@gmx.net>	<1156281268.865624.302070@b28g2000cwb.googlegroups.com>	<mailman.9666.1156281679.27775.python-list@python.org>	<1156283135.985893.186500@m73g2000cwd.googlegroups.com>	<mailman.9668.1156283600.27775.python-list@python.org>	<1156284812.469380.274370@b28g2000cwb.googlegroups.com>	<mailman.9686.1156315895.27775.python-list@python.org>	<1156350580.363393.256730@74g2000cwt.googlegroups.com>	<mailman.9713.1156351048.27775.python-list@python.org>
	<1157707489.119939.136720@m79g2000cwm.googlegroups.com>
Message-ID: <edrfrb$pj6$1@sea.gmane.org>

MonkeeSage wrote:
> Simon Brunning wrote:
> 
>>It's not inconcevable that Python could behave that way, it's just
>>that it would impose an overhead on the 99.999% of Python users who
>>would have no use for the feature. It's a price not worth paying.
> 
> 
> I guess I don't get the problem with the OP's request, either. There is
> already a name<->identifier mapping in place for objects. You can type
> the object name and python magically gives you the object by matching
> the name to the identifier. It would probably be pretty simple to
> expose the name or names associated with the identifier, if any, via

Probably? Based on what assumptions (or knowledge of interpreter internals)?

> built-in function or method. There would be no extra overhead. There
> would be no speed hit if you didn't call the function/method. There
> would be very little implementation expense (I would imagine), as the

Which demonstrates that imagination is a wonderful thing ...

> code that is already in place to do look-ups from the parser to the
> object map could probably be reused or hooked into. But seeing as it
> isn't a general-purpose feature, and Steven's function would be
> sufficient for most cases, I'm not saying it should be a core feature;
> I'm just saying that I don't see what the big huff is about.
> 
I don't think there's any big huff. It's just that Python has achieved 
its current popularity largely by avoiding bloat and feature creep. As 
you observe (or seem to), there isn't a one-to-one mapping between names 
and objects anyway.

Put more simply, objects don't *have* names -- names are bound to 
objects. So modifying the interpreter in the ways you suggest would add 
unnecessary code to the compiler purely to meet a bogus requirement.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jstroud at mbi.ucla.edu  Sat Sep 23 05:41:01 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 23 Sep 2006 09:41:01 GMT
Subject: Building things with setup.py
In-Reply-To: <4514CE00.1060102@v.loewis.de>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
	<451368E9.10901@v.loewis.de>
	<A7OQg.4225$6S3.129@newssvr25.news.prodigy.net>
	<451446F6.5060807@v.loewis.de>
	<uWXQg.3954$IA.1364@newssvr11.news.prodigy.com>
	<4514CE00.1060102@v.loewis.de>
Message-ID: <Ni7Rg.4474$6S3.739@newssvr25.news.prodigy.net>

Martin v. L?wis wrote:
> James Stroud schrieb:
>> I think I would like to know how to avoid or correct these sort of
>> issues in the future, which seem to be limited, for me at least, to
>> scipy and numpy, with the possible exception of MySQLdb and its
>> dependency on zlib. Ideally, I would like to understand exactly what
>> causes these errors in addition to knowing what I can do to correct them
>> in the future.
> 
> Let's take a specific failure, namely the line
> 
> /auto_nfs/data10/users/jstroud/Programs/bin/g77
> -L/data10/users/jstroud/Programs/lib
> -L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3
> build/temp.linux-i686-2.5/numpy/core/blasdot/_dotblas.o
> -L/data10/users/jstroud/Programs/lib -lblas -lg2c -o
> build/lib.linux-i686-2.5/numpy/core/_dotblas.so
> 
> This gives errors like
> 
> build/temp.linux-i686-2.5/numpy/core/blasdot/_dotblas.o(.text+0x758):numpy/core/blasdot/_dotblas.c:226:
> undefined reference to `PyTuple_New'
> 
> That's not too surprising: this line tries to link the input
> *as an executable program*, despite calling the output
> _dotblas.so. In an executable program, all symbols need to
> be defined; that's why it it complains about so many missing
> symbols (including MAIN__ - which should never be missing
> in a library). Even though adding python2.5.a to the linker
> link makes these symbols appear, the result still won't
> work, as you can't use an executable program file as if
> it were a shared library.
> 
> Now, compare this to a succeeding build of a C extension
> module,
> 
> gcc -pthread -shared -L/data10/users/jstroud/Programs/lib
> -L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3
> -I/data10/users/jstroud/Programs/include
> -I/data10/users/jstroud/Programs/qt/include -I/usr/include
> -I/data10/users/jstroud/Programs/include/freetype2/freetype
> build/temp.linux-i686-2.5/build/src.linux-i686-2.5/numpy/core/src/umathmodule.o
> -lm -o build/lib.linux-i686-2.5/numpy/core/umath.so
> 
> Notice that this passes -shared to the compiler, requesting
> construction of a shared library. This is the problem with
> the g77 linker line; try invoking
> 
> /auto_nfs/data10/users/jstroud/Programs/bin/g77 -shared
> -L/data10/users/jstroud/Programs/lib
> -L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3
> build/temp.linux-i686-2.5/numpy/core/blasdot/_dotblas.o
> -L/data10/users/jstroud/Programs/lib -lblas -lg2c -o
> build/lib.linux-i686-2.5/numpy/core/_dotblas.so
> 
> manually (whether or not -pthread is also necessary
> or supported for g77, I don't know). This should at least
> make the complaints about missing symbols go away; you
> should then see whether the resulting module can be
> imported in Python.
> 
> If that solves the problem, the question is why the
> -shared option isn't passed automatically; your setting
> LDFLAGS might indeed be a cause.
> 
> Regards,
> Martin

As per your and Robert Kern's suggestions, unsetenv'ing $LDFLAGS and 
$CPPFLAGS indeed did the trick for numpy, scipy, and mysqldb. What a 
tough lesson in distutils!

<COMMENTARY>Though great for self development, I'm not so sure such 
lessons should be necessary to build these tools.</COMMENTARY>

James

James


From jaysherby at gmail.com  Fri Sep 15 21:02:38 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 18:02:38 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
In-Reply-To: <1158366884.271106.233500@i3g2000cwc.googlegroups.com>
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
	<1158366884.271106.233500@i3g2000cwc.googlegroups.com>
Message-ID: <1158368557.990103.222800@k70g2000cwa.googlegroups.com>

Thanks for the tip, but that breaks things later for what I'm doing.

bearophileHUGS at lycos.com wrote:
> In that case you don't need a lambda:
>
> import Tkinter as tk
>
> class Test:
>     def __init__(self, parent):
>         buttons = [tk.Button(parent, text=str(x+1),
> command=self.highlight(x)) for x in range(5)]
>         for button in buttons:
>             button.pack(side=tk.LEFT)
>
>     def highlight(self, x):
>         print "highlight", x
>
> root = tk.Tk()
> d = Test(root)
> root.mainloop()
> 
> Bye,
> bearophile



From rmuschall at tecont.de  Tue Sep 12 14:49:51 2006
From: rmuschall at tecont.de (Ralf Muschall)
Date: Tue, 12 Sep 2006 20:49:51 +0200
Subject: Gadfly server startup error
Message-ID: <g3cjt3-ub6.ln1@prcm.tecont.de>

Hello,

I just tried the recent gadfly (from SF), using Python
2.4.2 (hand built, since my Suse 8.2 had only 2.2.2).

The direct operation of gadfly works.

After calling gfserver, I get (in addition to a complete
users manual dumped on the screen) the following error
message:

|Traceback (most recent call last):
|  File "/usr/local/bin/gfserver", line 4, in ?
|    main()
|  File "/usr/local/python-2.4.2/lib/python2.4/site-packages/gadfly/scripts/gfserver.py", line 89, in main
|    S = Server(int(port), db, dr, pw, startup)
|NameError: global name 'Server' is not defined


which is factually correct (the script only imports sys,
but then tries to instantiate the class "Server" which is
nowhere defined).

Is this a bug somewhere, or is just my installation broken?

Ralf


From robert.kern at gmail.com  Sat Sep 23 20:39:46 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 19:39:46 -0500
Subject: Looking for opinions
In-Reply-To: <1159055301.440027.275620@b28g2000cwb.googlegroups.com>
References: <1158957281.793034.191730@m7g2000cwm.googlegroups.com>	<45159ef7$0$22860$626a54ce@news.free.fr>
	<1159055301.440027.275620@b28g2000cwb.googlegroups.com>
Message-ID: <ef4k4e$ndp$1@sea.gmane.org>

crystalattice wrote:
> Bruno Desthuilliers wrote:
>> I have few experience with RPG softwares, but if your "domain" logic si
>> anything more than trivially complex, it's always better to keep it as
>> decoupled as possible from the user interface (unless of course the user
>> interface actually is the domain !-). FWIW, this doesn't prevent you
>> from using a web framework as the front-end...
> 
> Sorry, but what exactly do you mean by "domain"?  I've heard of domains
> before but I think my interpretation is different from yours in this
> respect.  Is this like the back-end code or do you mean something else?

Yes. The code that represents player characters, NPCs, artifacts, maps, GM 
notes, etc. rather than dialog boxes, windows, config files, HTML templates.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From onurb at xiludom.gro  Fri Sep  1 05:14:14 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 11:14:14 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <ed8p5b$ff7$1@news.lysator.liu.se>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
Message-ID: <44f7f9e6$0$24396$636a55ce@news.free.fr>

Joel Hedlund wrote:
>> Short answer: Use Traits. Don't invent your own mini-Traits.
> 
> Thanks for a quick and informative answer! I'll be sure to read up on
> the subject. (And also: thanks Bruno for your contributions!)
> 
>> Types are very frequently exactly the wrong thing you want to check for.
> 
> I see what you mean. Allowing several data types may generate unwanted
> side effects (integer division when expecting real division, for example).
> 
> I understand that Traits can do value checking which is superior to what
> I presented, and that they can help me move validation away from
> functional code, which is always desirable. But there is still the
> problem of setting an approprate level of validation.
> 
> Should I validate data members only? This is quite easily done using
> Traits or some other technique and keeps validation bloat localized in
> the code. This is in line with the DRY principle and makes for smooth
> extensibility, but the tracebacks will be less useful.
> 
> Or should I go the whole way and validate at every turn (all data
> members, every arg in every method, ...)? This makes for very secure

...and inflexible...

> code and very useful tracebacks, but does not feel very DRY to me... Are
> the benefits worth the costs? Do I build myself a fortress of
> unmaintainability this way? Will people laugh at my modules?

I'm not sure that trying to fight against the language is a sound
approach, whatever the language. If dynamic typing gives you the creep,
then use a statically typed language - possibly with type-inference to
keep as much genericity as possible.

> Or taken to the other extreme: Should I simply duck-type everything, and
> only focus my validation efforts to external data (from users, external
> applications and other forces of evil). 

IMHO and according to my experience : 99% yes (there are few corner
cases where it makes sens to ensure args correctness - which may or not
imply type-checking). Packages like FormEncode are great for data
conversion/validation. Once you have trusted data, the only possible
problem is within your code.

> This solution makes for
> extremely clean code, but the thought of potential silent data
> corruption makes me more than a little queasy.

I've rarely encoutered "silent" data corruption with Python - FWIW, I
once had such a problem, but with a lower-level statically typed
language (integer overflow), and I was a very newbie programmer by that
time. Usually, one *very quickly* notices when something goes wrong. Now
if you're really serious, unit tests is the way to go - they can check
for much more than just types.

My 2 cents.
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From johnjsal at NOSPAMgmail.com  Tue Sep 26 13:17:26 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 26 Sep 2006 17:17:26 GMT
Subject: ultra newbie question (don't laugh)
In-Reply-To: <mailman.705.1159285715.10491.python-list@python.org>
References: <TjaSg.26$1n3.125@news.tufts.edu>
	<mailman.705.1159285715.10491.python-list@python.org>
Message-ID: <GgdSg.28$1n3.401@news.tufts.edu>

Fredrik Lundh wrote:

> when you get programmers block, telling your brain to "shut up and let 
> me write some code" is often a good idea.  just start tinkering with 
> your first idea, and see if you can make it work.  if you get a little 
> stuck, hack your way through it.  if you get really stuck, take a break, 
> work on something else for a while, and wait for your brain to come up 
> with a better idea.  repeat.

Thanks Fredrik! My initial feeling was the opposite, i.e. don't rush 
into anything, just stop and think about how I want to do this first. 
But then of course the possibilities piled up and I was stuck, so your 
suggestion is probably much better at this point. I just need to try 
some things! If nothing else, I'll learn what's efficient and what's not.


> here's how I would start:
> snip

You know, I planned all along to use ElementTree to *read* my XML file, 
but like a bonehead I for some reason was trying to create all the 
*write* methods myself! Next stop: ElementTree documentation page! :)


From johnjsal at NOSPAMgmail.com  Wed Sep  6 15:22:41 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 06 Sep 2006 19:22:41 GMT
Subject: New 2.5 release date: September 19
In-Reply-To: <44ff0dcb$0$5114$ba4acef3@news.orange.fr>
References: <92jLg.2727$No6.53442@news.tufts.edu>
	<44ff0dcb$0$5114$ba4acef3@news.orange.fr>
Message-ID: <5eFLg.2728$No6.53375@news.tufts.edu>

M?ta-MCI wrote:
> September 19?    Okay !   Which year?

At this point, I'm not sure.  :)


From ldo at geek-central.gen.new_zealand  Fri Sep 29 03:41:57 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 19:41:57 +1200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
Message-ID: <efiim9$11j$2@lust.ihug.co.nz>

In message <pan.2006.09.27.16.51.12.529785 at vfx.org.uk>, Mike Playle wrote:

> License keys exist to make it easier for honest users to
> remain honest.

It was Ed Felten who said that "keeping honest people honest is like keeping
tall people tall".


From jordan.taylor2 at gmail.com  Fri Sep 29 15:05:25 2006
From: jordan.taylor2 at gmail.com (Jordan)
Date: 29 Sep 2006 12:05:25 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159471108.337439.147440@m73g2000cwd.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<451BD332.1080505@websafe.com>
	<1159471108.337439.147440@m73g2000cwd.googlegroups.com>
Message-ID: <1159556725.685461.66810@k70g2000cwa.googlegroups.com>

If your using python 2.4.3 or essentially any of the 2.3, 2.4 series,
i'd test out PyScripter as an IDE, it's one of the best that I've used.
 Unfortunately, they have yet to fully accomedate 2.5 code (you can
still write 2.5 code with almost no problems, but you won't be able to
use a 2.5 interactive interpeter).


Damian wrote:
> Sorry about the multiple posts folks. I suspect it was the "FasterFox"
> FireFox extension I installed yesterday tricking me.
>
> I had a brief look at libxml(?) on my Ubuntu machine but haven't run it
> on the server.
>
> I'll look into pyrxp Larry.
>
> I have to say I'm struggling a little with the discoverability and
> documentation side of things with Python. I realise that
> discoverability is purported to be one of its strong sides but coming
> from the Visual Studio IDE where Intellisense looks after everything as
> you are typing and you can see exactly what methods are available to
> what class and what variables are required and why what I've seen so
> far is not that flash.
>
> I've installed Eclipse with Pydev (very impressive) on my Linux box and
> am using IDLE on Windows and it could just be my lack of familiarity
> that is letting me down. Any other IDE recommendations?
>
> I'd be keen to test pyrxp and libxslt but may need help with the code -
> I spent literally hours yesterday trying to make a 20-line bit of code
> work. To make things worse I started with 4suite in Ubuntu and it
> refused to work with an error about not being able to find default.cat
> or something. Googled for hours with no luck.
>
> That said, I really want to make the switch and so far Python looks to
> be the best choice.
> 
> Cheers
> Damian



From Benjamin.Barker at gmail.com  Sat Sep 30 11:54:23 2006
From: Benjamin.Barker at gmail.com (Ben)
Date: 30 Sep 2006 08:54:23 -0700
Subject: Storing records from a parsed file
In-Reply-To: <1159627131.177295.257510@c28g2000cwb.googlegroups.com>
References: <1159619474.342225.319660@h48g2000cwc.googlegroups.com>
	<mailman.999.1159624370.10491.python-list@python.org>
	<1159626075.411507.133790@k70g2000cwa.googlegroups.com>
	<1159627131.177295.257510@c28g2000cwb.googlegroups.com>
Message-ID: <1159631663.871973.301930@m7g2000cwm.googlegroups.com>

Finally got it all sorted :-)

I got slightly confused because it seems that if you refer to class
variables from methods within that class you need to explicitly state
that they are self, otherwise, since class variables are all public in
python, things could get quite confusing.

Ben


Ben wrote:
> Ah - I think I've sorted it out.
>
> I can now have data1.function()
>
> or
>
> data2.function()
>
>
> etc
>
>
> However, I can still call function() directly:
>
> function()
>
>  which seems very odd Indeed. The only instances of function are within
> classes data1 and data2, and these definitions are different, so I
> don't see why I can get away with calling it without reference to a
> base class - for a start how does it know whivh one to call... will
> investigate :-p



From onurb at xiludom.gro  Thu Sep 28 04:19:24 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 10:19:24 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <451b24a5@news.bezeqint.net>
References: <451b24a5@news.bezeqint.net>
Message-ID: <451b858d$0$28375$636a55ce@news.free.fr>

efrat wrote:
>   Hello,
> 
>   I'm planning to use Python in order to teach a DSA (data structures
> and algorithms) course in an academic institute. If you could help out
> with the following questions, I'd sure appreciate it:
(snip)
> 2. Suppose I have some file example.py, and I'd like to incorporate it
> **into** part of an HTML page with nice syntax highlighting and all the
> shebang. Is there an easy way to do so?

I suppose this has more to do with the course presentation than with
it's content !-)

However, Trac's wiki is probably a good solution here.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From 71david at libero.it  Wed Sep 13 02:09:28 2006
From: 71david at libero.it (David)
Date: Wed, 13 Sep 2006 08:09:28 +0200
Subject: How can I get the function's caller?
Message-ID: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>

Inside a function I need to get the function's caller's name. How can I get
it?

thanks in advance.

David


From tim at tdw.net  Fri Sep 15 19:49:49 2006
From: tim at tdw.net (Tim Williams)
Date: Sat, 16 Sep 2006 00:49:49 +0100
Subject: something for itertools
In-Reply-To: <B52458705.445.245.1@mx-extra>
References: <R52454576.664.295.1@mx-extra>
	<9afea2ac0609151528na82058fs5d454274b4e785ab@mail.gmail.com>
	<B52458705.445.245.1@mx-extra>
Message-ID: <9afea2ac0609151649g7128bf73iaefbe729a14a5d17@mail.gmail.com>

On 15/09/06, Daniel Nogradi <nogradi at gmail.com> wrote:

> > or maybe a one liner  :)
> >
> > >>> (a + 5*(None,))[:5]
> > (1, 2, 3, None, None)
> >
>
> Well, something like this is what I actually do. But for this first I
> have to loop over all tuples and pick out the maximal length, so over
> all it won't be a one liner but two loops.

I meant it as a one line answer to your padding query,  you would
still need to iterate over you collection of tuples as it only acts on
1 tuple at a time.

That said, its not too difficult to get the whole process, including
finding the maximal length to a 2 liner once you have collected your
tuples :)


From coder_infidel at hotmail.com  Mon Sep 11 10:04:56 2006
From: coder_infidel at hotmail.com (Luke Dunstan)
Date: Mon, 11 Sep 2006 22:04:56 +0800
Subject: Python on handhelds
References: <1157946461.741174.152870@m73g2000cwd.googlegroups.com>
	<7x1wqj12cj.fsf@ruckus.brouhaha.com>
Message-ID: <45056d02$0$4024$5a62ac22@per-qv1-newsreader-01.iinet.net.au>


"Paul Rubin" <http://phr.cx at NOSPAM.invalid> wrote in message 
news:7x1wqj12cj.fsf at ruckus.brouhaha.com...
> "Nick" <nick.kigs at gmail.com> writes:
>> I have never programmed in Python a day in my life. My group is working
>> on developing an application on the Dell Axim hand held that has a
>> tight deadline. I have heard that Python is particularly advantageous
>> in rapid prototyping and deployment. I would like to lean this way if I
>> can. Does anyone know if I can run Python on the Dell Axim handheld. It
>> runs Windows CE. If so, what all is needed to make this possible.
>
> Someone did a WinCE port a while back, but I don't think it's actively
> used much.  The approach might be reasonable if you're an expert with
> some time on your hands, but for a newcomer with an onrushing
> deadline, you may be better off using whatever you're already using
> (VB or whatever), and keeping Python in mind for some future project.

I agree that it is much less active than Python on other platforms, and in 
some areas it lags behind the PC, e.g. in GUI toolkits. However, if you want 
to try it go here:

http://sourceforge.net/projects/pythonce

See also the mailing list:

http://mail.python.org/mailman/listinfo/pythonce


Luke Dunstan




From duncan.booth at invalid.invalid  Thu Sep 21 05:50:26 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 21 Sep 2006 09:50:26 GMT
Subject: Is it possible to save a running program and reload next time ?
References: <mailman.386.1158824225.10491.python-list@python.org>
	<eetjtc$2dm$1@gemini.csx.cam.ac.uk>
Message-ID: <Xns98456E479A46Dduncanbooth@127.0.0.1>

Jeremy Sanders <jeremy+complangpython at jeremysanders.net> wrote:

> For Linux (and other Unix like OSs), there are several "checkpointing"
> libraries available which allow programs to be saved to disk, and
> restarted later.
> 
Another option which will work on just about anything would be to run the 
program in a vmware virtual machine. Then you can suspend or resume the 
virtual machine whenever you wish.


From peter.maas at somewhere.com  Tue Sep 12 15:11:54 2006
From: peter.maas at somewhere.com (Peter Maas)
Date: Tue, 12 Sep 2006 21:11:54 +0200
Subject: Create TarFile using python
In-Reply-To: <1158086259.439424.96720@b28g2000cwb.googlegroups.com>
References: <1158086259.439424.96720@b28g2000cwb.googlegroups.com>
Message-ID: <ee70qb$ean$1@online.de>

itzel wrote:
> I have a problem. I'm new in python and I need a script that group a
> list of files using Tar file utility and then, compress that block
> using a compress utility (gzip i think). I already found some
> information and i try to apply it,  but my scripy doesn't work. 

Did you look here?:

http://docs.python.org/lib/tar-examples.html

Peter Maas, Aachen


From cjlesh at gmail.com  Mon Sep 11 16:41:01 2006
From: cjlesh at gmail.com (cjl)
Date: 11 Sep 2006 13:41:01 -0700
Subject: Running python from a usb drive
In-Reply-To: <ee4fm8$2elh$1@ulysses.news.tiscali.de>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
Message-ID: <1158007261.572014.89750@i3g2000cwc.googlegroups.com>

Uwe:

Thank you for your reply.

> is pythonpath really case insensitive on windows ?

I think so. After running my batch file, I can load the python
interpreter by typing 'python', and can then type 'import django'
without error. This lives in the site-packages directory, so it is
finding it.

However, there is a python script that lives in python24\Scripts called
'django-admin.py', which I am adding to my path. When I type
'django-admin.py --help' I get an error that it couldn't load the
django module. When I type 'python E:\python24\django-admin.py --help'
I get the correct output, and no errors, so I know it is loading the
module.

I guess I am trying to figure out why, and what the top "shebang" line
should be for the script django-admin.py, because the removable drive
can have different drive letters, so I can't hard code it.

thanks again,
CJL



From jabailo at texeme.com  Wed Sep 27 13:54:24 2006
From: jabailo at texeme.com (John Bailo)
Date: Wed, 27 Sep 2006 10:54:24 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <L_KdncN7ErRSJ4fYnZ2dnUVZ_sadnZ2d@speakeasy.net>

Xah Lee wrote:
> Computer Language Popularity Trend
> 
> This page gives a visual report of computer languages's popularity, as
> indicated by their traffic level in newsgroups.

The only problem being that in the last five years, there are now a 
multiplicity of options for discussing any of these languages, in places 
that are not Usenet.

For example, Sun hosts a variety of bulletin boards on its java.net 
site.   Likewise Microsoft has it's "communities".

My guess is that if you included all the new avenues the other languages 
would have growth curves about the same shape as for LISP.




-- 
Texeme Construct


From python.list at tim.thechases.com  Mon Sep 11 12:18:49 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 11 Sep 2006 11:18:49 -0500
Subject: best way of testing a program exists before using it?
In-Reply-To: <ee40qh$j0n$1@sea.gmane.org>
References: <45057B5E.7010306@googlemail.com>
	<ee3urn$ane$1@sea.gmane.org>	<45058319.2070400@googlemail.com>
	<ee40qh$j0n$1@sea.gmane.org>
Message-ID: <45058C69.6070806@tim.thechases.com>

> Erm, but don't you *have* to run the program anyway to produce
> the required XML output? So, if the attempt to run it fails
> then you know it isn't installed, and if it succeeds then you
> should have the required output (I'm presuming either the
> output will appear in a file or you'll be using the subprocess
> module or similar to capture its standard output).

While it may not be the case for the OP, it's not entirely 
unreasonable there might be some intermediate process that is 
time-consuming...something like

def do_stuff():
	data = gather_data_from_user_for_x_days(7)
	do_something_with(data)
	os.system('program.exe') # to process the gathered data

If it's going to bomb out in step #3, it might be nice to know 
before you start the 7-days worth of data-gathering/sampling in 
step #1.

def do_stuff():
	if exists_in_path('program.exe'):
		data = gather_data_from_user_for_x_days(7)
		do_something_with(data)
		os.system('program.exe')
	else:
		let_user_know_cant_find_program()

That way, they can remedy the situtation before wasting their 
time with a laborious process.

Granted, there's a race condition, that if the program exists and 
the user starts gathering data, and then deletes the program 
before the completion of the data-gathering, it will bomb out. 
However, I'd chalk that up to a 
stupid-user-for-shooting-themselves-in-the-foot exception. :)

Sure, it's a bit contrived in this case, but I've had too many 
applications that do exactly this, and would have welcomed 
information that a piece was missing *before* I had invested time 
in the app.

-tkc







From dcoffin at gmail.com  Fri Sep  8 11:29:43 2006
From: dcoffin at gmail.com (David Coffin)
Date: Fri, 8 Sep 2006 16:29:43 +0100
Subject: Debugging Builds
Message-ID: <E7663854-773D-4854-BEBB-009C584A9BED@gmail.com>

Hi,

Is there any documentation concerning the Python debugging builds  
beyond section 1.5 in the Python/C API reference manual and Misc/ 
SpecialBuilds.txt file in the source code?

I'd like to know how people generally go about debugging memory leaks  
in C extensions.

Thanks,
David






From grahn+nntp at snipabacken.dyndns.org  Wed Sep  6 08:48:02 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 6 Sep 2006 12:48:02 GMT
Subject: Netstat Speed
References: <44f95c2c@127.0.0.1> <slrnefiqcj.j6l.sybrenUSE@schuimige.stuvel.eu>
	<slrnefjbu6.3bp.grahn+nntp@frailea.sa.invalid>
	<slrnefjidd.lls.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <slrnefta5n.31i.grahn+nntp@frailea.sa.invalid>

On Sat, 2 Sep 2006 20:13:01 +0200, Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:
> Jorgen Grahn enlightened us with:
>>| def ip_is_active(addr):
>>|      """Return success if 'addr' shows up in the output from 'netstat -an'.
>>|      We assume that a suitable version of netstat exists.
>>|      """
>
> If I have an "if" in the docstring, I always write the "else" case as
> well:
>
> """Returns True if 'addr' shows up in the output from 'netstat -an',
> and False otherwise. We assume that a suitable version of netstat
> exists.
> """
>
> This makes it clear what happens in either case.

Tastes differ. I think it's clear enough without the "else". Note that I
changed the name of the function too, to make it read like a test (or rather
an assertion): "if not ip_is_active('127.0.0.1')".

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From pavlovevidence at gmail.com  Fri Sep  8 22:05:25 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 8 Sep 2006 19:05:25 -0700
Subject: convert loop to list comprehension
In-Reply-To: <1157762409.805195.231770@m73g2000cwd.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
	<1157762409.805195.231770@m73g2000cwd.googlegroups.com>
Message-ID: <1157767525.761220.117190@d34g2000cwd.googlegroups.com>

bvdp at xplornet.com wrote:
> Paul Rubin wrote:
> > bearophileHUGS at lycos.com writes:
> > > print sum( ([i]*n for i,n in enumerate(seq)), [])
> >
> > Wow, I had no idea you could do that.  After all the discussion about
> > summing strings, I'm astonished.
>
> Me too ... despite what bearophile said, this is faster than the 2nd
> example. Nearly as fast as the original loop :)

See if it's still faster if the original sequence is length 1000.
(Hint: it won't be.)  Adding lists with sum has the same performance
drawback that adding strings does, so it should be avoided.

sum is for adding numbers; please stick to using it that way.

FWIW, the original loop looked perfectly fine and readable and I'd
suggest going with that over these hacked-up listcomp solutions.  Don't
use a listcomp just for the sake of using a listcomp.


Carl Banks



From Eric_Dexter at msn.com  Sat Sep 23 15:15:32 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 23 Sep 2006 12:15:32 -0700
Subject: newbe's re question
In-Reply-To: <mailman.426.1158871980.10491.python-list@python.org>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
	<mailman.322.1158749465.10491.python-list@python.org>
	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>
	<mailman.341.1158774359.10491.python-list@python.org>
	<1158796645.943655.180890@i3g2000cwc.googlegroups.com>
	<mailman.426.1158871980.10491.python-list@python.org>
Message-ID: <1159038932.050142.245830@i3g2000cwc.googlegroups.com>

These are csound files.  Csound recently added python as a scripting
language and is allowing also allowing csound calls from outside of
csound.  The nice thing about csound is that instead of worrying about
virus and large files it is an interpiter and all the files look
somewhat like html.  4,000 virus free instruments for $20 is available
at
http://www.csounds.com and the csound programming book is also
available.  The downside is that csound is can be realy ugly looking
(that is what I am trying to change) and it lets you write ugly looking
song code that is almost unreadable at times (would look nice in a
grid)

http://www.msn.com
..


Frederic Rentsch wrote:
> Eric_Dexter at msn.com wrote:
> > Frederic Rentsch wrote:
> >
> >> Eric_Dexter at msn.com wrote:
> >>
> >>> Frederic Rentsch wrote:
> >>>
> >>>
> >>>> Eric_Dexter at msn.com wrote:
> >>>>
> >>>>
> >>>>> All I am after realy is to change this
> >>>>>
> >>>>>  reline = re.line.split('instr', '/d$')
> >>>>>
> >>>>> into something that grabs any line with instr in it take all the
> >>>>> numbers and then grab any comment that may or may not be at the end of
> >>>>> the line starting with ; until the end of the line including white
> >>>>> spaces..  this is a corrected version from
> >>>>>
> >>>>> http://python-forum.org/py/viewtopic.php?t=1703
> >>>>>
> >>>>> thanks in advance the hole routine is down below..
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> [code]
> >>>>> def extractCsdInstrument (input_File_Name, output_File_Name,
> >>>>> instr_number):
> >>>>>
> >>>>>     "takes an .csd input file and grabs instr_number instrument and
> >>>>> creates output_File_Name"
> >>>>>     f = open (input_File_Name , 'r')                #opens file passed
> >>>>> in to read
> >>>>>     f2 = open (output_File_Name, 'w')               #opens file passed
> >>>>> in to write
> >>>>>     instr_yes = 'false'                             #set flag to false
> >>>>>
> >>>>>     for line in f:                                  #for through all
> >>>>> the lines
> >>>>>       if "instr" in line:                           #look for instr in
> >>>>> the file
> >>>>>            if instr_yes == 'true':                    #check to see if
> >>>>> this ends the instr block
> >>>>>                break                                #exit the block
> >>>>>
> >>>>>            reline = re.line.split('instr', '/d$')     #error probily
> >>>>> split instr and /d (decimal number into parts) $ for end of line
> >>>>>            number = int(reline[1])                  #convert to a
> >>>>> number maybe not important
> >>>>>                 if number == instr_number:            #check to see if
> >>>>> it is the instr passed to function
> >>>>>                 instr_yes = "true":                 #change flag to
> >>>>> true because this is the instr we want
> >>>>>       if instr_yes = "true":                        #start of code to
> >>>>> copy to another file
> >>>>>            f2.write(f.line)                         #write line to
> >>>>> output file
> >>>>>
> >>>>>     f.close                                         #close input file
> >>>>>     f2.close
> >>>>>
> >>>>> [/code]
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>> Eric,
> >>>>       From your problem description and your code it is unclear what
> >>>> exactly it is you want. The task appears to be rather simple, though,
> >>>> and if you don't get much useful help I'd say it is because you don't
> >>>> explain it very well.
> >>>>       I believe we've been through this before and your input data is
> >>>> like this
> >>>>
> >>>>    data = '''
> >>>>    <CsoundSynthesizer>;
> >>>>      ; test.csd - a Csound structured data file
> >>>>
> >>>>    <CsOptions>
> >>>>      -W -d -o tone.wav
> >>>>    </CsOptions>
> >>>>
> >>>>    <CsVersion>    ;optional section
> >>>>      Before 4.10  ;these two statements check for
> >>>>      After 4.08   ;   Csound version 4.09
> >>>>    </CsVersion>
> >>>>
> >>>>    <CsInstruments>
> >>>>      ; originally tone.orc
> >>>>      sr = 44100
> >>>>      kr = 4410
> >>>>      ksmps = 10
> >>>>      nchnls = 1
> >>>>      instr   1
> >>>>          a1 oscil p4, p5, 1 ; simple oscillator
> >>>>             out a1
> >>>>        endin
> >>>>    </CsInstruments>
> >>>>
> >>>>    <CsScore>
> >>>>      ; originally tone.sco
> >>>>      f1 0 8192 10 1
> >>>>      i1 0 1 20000 1000 ;play one second of one kHz tone
> >>>>      e
> >>>>    </CsScore>
> >>>>
> >>>>    </CsoundSynthesizer>
> >>>>
> >>>> Question 1: Is this your input?
> >>>> if yes:
> >>>>     Question 1.1: What do you want to extract from it? In what format?
> >>>> if no:
> >>>>     Question 1.1: What is your input?
> >>>>     Question 1.2: What do you want to extract from it? In what format?
> >>>> Question 2: Do you need to generate output file names from the data?
> >>>> (One file per instrument?)
> >>>> if yes:
> >>>>    Question 2.1: What do you want to make your file name from?
> >>>> (Instrument number?)
> >>>>
> >>>>
> >>>> Regards
> >>>>
> >>>> Frederic
> >>>>
> >>>>
> >>> I want to pass the file name to the subroutine and return a comment
> >>> string if it is there maybe it should be simplier.  I probily should
> >>> have the option of grabbing the comment in other related routines.  I
> >>> am pretty ambitious with the main program.  I did notice some code in
> >>> tcl that would be usefull to the app If I compile it..  I am probily
> >>> not ready for that though..
> >>>
> >>> http://www.dexrow.com
> >>>
> >>>
> >>>
> >> Eric,
> >>      I'm beginning to enjoy this. I'm sure we'll sort this out in no
> >> time if we proceed methodically. Imagine you are a teacher and I am your
> >> student. This is a quiz. I have to take it and you need to explain to me
> >> the problem you want me to solve. If you don't explain it clearly, I
> >> will not know what I have to do and cannot do the quiz. If you answer my
> >> questions above, your description of the problem will be clear and I can
> >> take the quiz. Okay?
> >>
> >> Frederic
> >>
> >
> >
> > instr   1
> >          a1 oscil p4, p5, 1 ; simple oscillator    ; comment is
> > sometimes here
> >             out a1
> >        endin
> >
> >
> > I need to know the file I wan't to grab this from I need to grab this
> > out of the larger file and put it into it's own file,  I need to know
> > what instr the user wants.  I need to know what file to put it into and
> > it would be usefull to have the comment line returned (if any).
> >
> > I did just get python essential reference 3rd edition..  If there is a
> > better reference on just the subject I am after I would be glad to grab
> > it when I get cash again.
> >
> >
>
> Eric,
>
>    Tell us the story. Are you a student? A musician? What are you doing
> with these files? Where do you get them from? What for?
> 
> Frederic



From NevilleDNZ.python at 3ttechnology.com  Mon Sep 25 07:51:33 2006
From: NevilleDNZ.python at 3ttechnology.com (Neville CD)
Date: Mon, 25 Sep 2006 23:51:33 +1200
Subject: How do I submit fixes for urllib2 & urlparse?
Message-ID: <1159185094.3276.20.camel@alfa>

Basically I encountered some smallish problems with a couple of modules
and figure I can fix the problems.  

I did find http://sourceforge.net/projects/python, should I report my
problem report there and then assign them to myself to fix (and create
test scripts). 

As you can probably guess I have not provided python fixes before.

How complicated is this? eg I am using python 2.4 and 2.5b3.  Do I need
to get up to speed with 2.6(?) and fix this also?  As a newbie which
python mailing list should I subscribe to.

Please point me to the right URL to answer the above queries.

FYI: the problems I encountered are for:
1. Set-cookies in 302 urllib2.httpRedirects.
2. Location: header %20 format problem
3. urlparse.start_tag attribute parsing and HTML syntax error recovery.

Cheers
NevilleDNZ



From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep 25 02:55:58 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 25 Sep 2006 08:55:58 +0200
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <slrnehevbt.dnl.sybrenUSE@schuimige.stuvel.eu>

Roy Smith enlightened us with:
> I'm working on a product which for a long time has had a Perl
> binding for our remote access API.  A while ago, I wrote a Python
> binding on my own, chatted it up a bit internally, and recently had
> a (large) customer enquire about getting access to it.
>
> I asked for permission to distribute the Python binding, and after a
> few weeks of winding its way through the corporate bureaucracy I got
> an email from a product manager who wants to meet with me to
> "understand the market demand for Python API before we commercialize
> it".

1) The customer wants it already.
2) The language is good enough for NASA and Google.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From tony.bedford at gmail.com  Tue Sep 26 05:59:07 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 02:59:07 -0700
Subject: where are isinstance types documented?
Message-ID: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>

Hi,

I'm using the isinstance built-in function. I've found the docs for it,
but there are no docs on the supported types.

For example isinstance(a, int) works fine but isinstance(s, string)
doesn't - because 'string is not known'.

I do know how to import the types module and then use defined types
such as 'types.StringType' - but the documentation says that from 2.2
this is not the preferred way.

So, where's the documentation for types I can use with isinstance, such
as 'int'?

Many thanks,
Tony



From maxm at mxm.dk  Mon Sep 25 19:57:57 2006
From: maxm at mxm.dk (Max M)
Date: Tue, 26 Sep 2006 01:57:57 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <45186d05$0$13975$edfadb0f@dread15.news.tele.dk>

walterbyrd skrev:
> If so, I doubt there are many. 
> 
> I wonder why that is?

Because you are ignorant?


From jstroud at mbi.ucla.edu  Sat Sep 23 04:43:52 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 23 Sep 2006 08:43:52 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.487.1158971909.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>	<mailman.438.1158898433.10491.python-list@python.org>	<c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>	<mailman.471.1158947946.10491.python-list@python.org>	<VrXQg.3935$IA.1598@newssvr11.news.prodigy.com>
	<mailman.487.1158971909.10491.python-list@python.org>
Message-ID: <ct6Rg.4473$6S3.1039@newssvr25.news.prodigy.net>

Ben Finney wrote:
> James Stroud <jstroud at mbi.ucla.edu> writes:
> 
>> <rant>I try things until a build works. I consider everything I do
>> until acquiring a working build as necessary. Going back to see
>> exactly what I did to make things work is not a viable option
> 
> Before trying such "I don't know what I need to do, but I'm going to
> want to know after I do it" procedures, I usually start 'script' in
> the shell session and then start all my experimenting. ('script' is a
> tool from BSD available on most GNU/Linux distributions as well.)
> 
> That way, the entire session, fumbling dead-ends and all, is available
> for later examination and trimming back to a "what I did to get it
> working" document.
> 

Beautiful suggestion. I've never even heard of that before. With OS X 
Terminal.app, I can buffer "unlimited lines" on my 6 year old ibook I 
use at home and on the road. But at work, on my brand new dual pentium, 
I've found myself limited to the thousand or so lines that konsole gives me.

James


From steve at holdenweb.com  Wed Sep 20 15:17:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 15:17:32 -0400
Subject: new string method in 2.5 (partition)
In-Reply-To: <4511845b$0$4523$e4fe514c@news.xs4all.nl>
References: <40XPg.6$1n3.149@news.tufts.edu>	<4510425e$0$12250$636a55ce@news.free.fr>	<mailman.299.1158709371.10491.python-list@python.org>
	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
Message-ID: <ees42s$99v$1@sea.gmane.org>

Irmen de Jong wrote:
> Terry Reedy wrote:
> 
>>"Bruno Desthuilliers" <bdesth.quelquechose at free.quelquepart.fr> wrote in 
>>message news:4510425e$0$12250$636a55ce at news.free.fr...
>>
>>>Err... is it me being dumb, or is it a perfect use case for str.split ?
>>
>>s.partition() was invented and its design settled on as a result of looking 
>>at some awkward constructions in the standard library and other actual use 
>>cases.  Sometimes it replaces s.find or s.index instead of s.split.  In 
>>some cases, it is meant to be used within a loop.  I was not involved and 
>>so would refer you to the pydev discussions.
> 
> 
> While there is the functional aspect of the new partition method, I was
> wondering about the following /technical/ aspect:
> 
> Because the result of partition is a non mutable tuple type containing
> three substrings of the original string, is it perhaps also the case
> that partition works without allocating extra memory for 3 new string
> objects and copying the substrings into them?
> I can imagine that the tuple type returned by partition is actually
> a special object that contains a few internal pointers into the
> original string to point at the locations of each substring.
> Although a quick type check of the result object revealed that
> it was just a regular tuple type, so I don't think the above is true...
> 
It's not.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From ldo at geek-central.gen.new_zealand  Mon Sep 25 23:02:18 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 15:02:18 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
Message-ID: <efa560$lgf$3@lust.ihug.co.nz>

In message <Xns984996E6BABCEduncanbooth at 127.0.0.1>, Duncan Booth wrote:

> If I have a unicode string such as: u'\u201d' (right double quote), then I
> want that encoded in my html as '&#8221;' (or &rdquo; but the numeric form
> is better).

Right-double-quote is not an HTML special, so there's no need to quote it.
I'm only concerned here with characters that have special meanings in HTML
markup.

> There should be a one-stop shop where I can take my unicode text and
> convert it into something I can safely insert into a generated html page;
> at present I need to call both cgi.escape and s.encode to get the desired
> effect.

What you're really asking for is a version of cgi.escape that a) fixes the
bugs discussed in this thread, and b) copes with different encodings while
doing so.

To handle b), you would need to pass it some indication of what the encoding
of the string is. In any case, converting a literal right-double-quote to
&#8221; is not relevant to the purpose of cgi.escape.


From mclaugb at nospm.yahoo.com  Sat Sep  2 09:43:40 2006
From: mclaugb at nospm.yahoo.com (mclaugb)
Date: Sat, 2 Sep 2006 14:43:40 +0100
Subject: thread join() not stopping
Message-ID: <edc1qn$466$1@gemini.csx.cam.ac.uk>

Here is a simple piece of code.
When i add the print (or other) function into the run method--the thread 
fails to stop after 2 seconds which the join(2) should ensure.

Any help appreciated.  Should compile on 2.4




From steve at holdenweb.com  Sun Sep  3 05:22:52 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 03 Sep 2006 10:22:52 +0100
Subject: Find the best price on gas in your local area for FREE....
In-Reply-To: <1157253333.718581.314810@e3g2000cwe.googlegroups.com>
References: <1157215122.268733.62140@74g2000cwt.googlegroups.com>
	<1157253333.718581.314810@e3g2000cwe.googlegroups.com>
Message-ID: <ede6s7$ake$2@sea.gmane.org>

Eric_Dexter at msn.com wrote:
> I hate cars and would perfer not to be harrased by those who support
> irans energy policy..
> 
> http://www.dexrow.com
> highpayinghomejobs at yahoo.com wrote:
> 
>>Visit the web site below to see where you can buy the cheapest gas in
>>your local area.  Just punch in your zip code and all the work is done
>>for you.  No Cost!   Absolutely FREE info.
>>
>>http://redacted
> 
> 

Great. So thanks to your intemperate response Google now contains two 
copies of that link instead of the original one. Perhaps you'd like to 
add links to other things you dislike?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From kkylheku at gmail.com  Tue Sep 26 17:05:54 2006
From: kkylheku at gmail.com (Kaz Kylheku)
Date: 26 Sep 2006 14:05:54 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <1159304754.445512.170550@d34g2000cwd.googlegroups.com>

John Salerno wrote:
> But what if you are an expert Python program and have zero clue about
> other languages?

Then I would say that you are not a mature computing professional, but
merely a "Python jockey".



From esj at harvee.org  Fri Sep 29 22:57:22 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 22:57:22 -0400
Subject: another distutils question
In-Reply-To: <pan.2006.09.29.23.24.21.541676@keithperkins.net>
References: <mailman.966.1159552468.10491.python-list@python.org>
	<pan.2006.09.29.23.24.21.541676@keithperkins.net>
Message-ID: <efkmf3$em2$1@sea.gmane.org>

Keith Perkins wrote:
> 
> On a similar note , I have another question about distutils and data files.
> I have a little program that uses a txt file to store data, and it works
> fine running it in it's own folder, if I install through distutils, using
> sudo to get it to write to the site-packages folder (which root owns), it
> installs the data file so that it is owned by root, and not by me, so
> that the data file can't be written to (although the script can read it).
> Do I need to run a post install script, or add something to setup.py file
> to chown the file or am I doing something wrong?  There doesn't seem to be
> anything on this in the docs.  

1: as pointed out, site-packages is for code only :-)

2: you will need a post processing script.

here is an example of distutils abuse that may help a little bit.  I 
needed to collect files from a file hierarchy and one other place in the 
source directory then stuff them in the right place in the production 
directory.   Since the pattern  was unpredictable, I built a method to 
accumulate data file references.

the solution is a bit more hard coded than I like but it gets the job 
done for now.  as I need to improve it, I'll fix it.

def expand_hierarchy(starting_point, data_files):
     dir_files = os.walk(starting_point)

     for (path, name, files) in dir_files:
         x = os.path.basename(path)
         if x != 'CVS':
             clean_files = [ os.path.join(path,item) \
                             for item in files \
                                 if (clean_test(item)) ]
             data_files.append((cr_paths%path,clean_files))

     return data_files

setup(...
       data_files=expand_hierarchy("web-ui",
                                   [(cr_paths%'etc', 

                                   ['ancillary/baseline_configuration']),
                                    ],
                                   )


to solve the file perms problem you run something after setup.  how you 
  associate perms/ownership with a file is up to you.  It might work to 
use data_files to enumerate files you apply the common perms/owernship. 
then special case what you need to.

hope this gives you some useful ideas.

--- eric



From spurthi_sagar at yahoo.co.in  Tue Sep 26 02:12:33 2006
From: spurthi_sagar at yahoo.co.in (bhavya sg)
Date: Tue, 26 Sep 2006 07:12:33 +0100 (BST)
Subject: Query regarding grep!!
Message-ID: <20060926061233.23085.qmail@web8709.mail.in.yahoo.com>



Hi,
 
 I saw in PEP4 of python 2.5 that grep module has gone
obsolete in perl 2.5. But I am not able to find an
alternative for that.My doubt is "are the other forms
of grep like egrep and ggrep be used instead"?
 
cheers,
Spurthi



		
__________________________________________________________
Yahoo! India Answers: Share what you know. Learn something new
http://in.answers.yahoo.com/


From johnjsal at NOSPAMgmail.com  Tue Sep 19 14:03:02 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 18:03:02 GMT
Subject: Installing 2.5 with 2.4?
In-Reply-To: <1158681033.708546.132710@b28g2000cwb.googlegroups.com>
References: <U0TPg.1$1n3.143@news.tufts.edu><4nadmaF9c3hpU1@uni-berlin.de>
	<AlTPg.2$1n3.27@news.tufts.edu>
	<1158681033.708546.132710@b28g2000cwb.googlegroups.com>
Message-ID: <qhWPg.4$1n3.37@news.tufts.edu>

John Machin wrote:

> I'd suggest that you uninstall 2.4 later if at all. Ensure that you
> have got all the extensions you want/need for 2.5 before you burn your
> boats. As Diez says in effect, there is no guarantee that any
> particular extension is available for 2.5 on Windows right now.
>

Thanks for the tips. As it turns out, all I really need for 2.4 is 
mysqldb, but since I don't see it for 2.5 yet, I'm keeping 2.4.3 around 
for now.


From robert.kern at gmail.com  Wed Sep  6 17:53:49 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 06 Sep 2006 16:53:49 -0500
Subject: Scientific computing and data visualization.
In-Reply-To: <1157574433.664189.217960@m73g2000cwd.googlegroups.com>
References: <mailman.85.1157564525.5279.python-list@python.org>
	<1157574433.664189.217960@m73g2000cwd.googlegroups.com>
Message-ID: <edng1d$j9n$1@sea.gmane.org>

Matteo wrote:
> If you are working with NetCDF files, you may wish to add
> ScientificPython (distinct from SciPy) to your toolset. It has a very
> nice NetCDF interface. Unfortunately, it is ancient, and you would have
> to install Numeric Python (ancestor to NumPy). However, it is easy to
> convert Numeric arrays into Numpy arrays:
>>>> my_numpy_array=numpy.array(my_numeric_array)

The NetCDF interface has been ported to numpy and currently resides in the scipy 
sandbox.

   http://svn.scipy.org/svn/scipy/trunk/Lib/sandbox/netcdf/

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From joshbloom at gmail.com  Thu Sep 28 15:54:15 2006
From: joshbloom at gmail.com (Josh Bloom)
Date: Thu, 28 Sep 2006 12:54:15 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159471108.337439.147440@m73g2000cwd.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<451BD332.1080505@websafe.com>
	<1159471108.337439.147440@m73g2000cwd.googlegroups.com>
Message-ID: <d25b6e9a0609281254j70e5402ejf891f3c4b4dd0de2@mail.gmail.com>

Hey Damian,

I suggest you take a look at
http://mmm-experts.com/Products.aspx?ProductId=4 which is a nice open source
Python IDE for windows.

After you've installed the version from that page, you should go to
http://groups.google.com/group/PyScripter?lnk=oa and get the more recent
unofficial release, for a few features and fixes.

Its got good intellisense type code completion and is pretty sweet overall,
debugging, unit testing, a file based Code Explorer,

Give it a shot.
-Josh


On 28 Sep 2006 12:18:28 -0700, Damian <damian at nice.co.nz> wrote:
>
> Sorry about the multiple posts folks. I suspect it was the "FasterFox"
> FireFox extension I installed yesterday tricking me.
>
> I had a brief look at libxml(?) on my Ubuntu machine but haven't run it
> on the server.
>
> I'll look into pyrxp Larry.
>
> I have to say I'm struggling a little with the discoverability and
> documentation side of things with Python. I realise that
> discoverability is purported to be one of its strong sides but coming
> from the Visual Studio IDE where Intellisense looks after everything as
> you are typing and you can see exactly what methods are available to
> what class and what variables are required and why what I've seen so
> far is not that flash.
>
> I've installed Eclipse with Pydev (very impressive) on my Linux box and
> am using IDLE on Windows and it could just be my lack of familiarity
> that is letting me down. Any other IDE recommendations?
>
> I'd be keen to test pyrxp and libxslt but may need help with the code -
> I spent literally hours yesterday trying to make a 20-line bit of code
> work. To make things worse I started with 4suite in Ubuntu and it
> refused to work with an error about not being able to find default.cat
> or something. Googled for hours with no luck.
>
> That said, I really want to make the switch and so far Python looks to
> be the best choice.
>
> Cheers
> Damian
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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From Eric_Dexter at msn.com  Sat Sep 16 13:12:06 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 16 Sep 2006 10:12:06 -0700
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <1158422020.995631.61740@m7g2000cwm.googlegroups.com>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<1158420540.813155.135850@k70g2000cwa.googlegroups.com>
	<1158422020.995631.61740@m7g2000cwm.googlegroups.com>
Message-ID: <1158426726.483021.199700@h48g2000cwc.googlegroups.com>


vbgunz wrote:
> > > Has anyone tried this thing..
> > > http://www.regular-expressions.info/regexbuddy.html
>
> I use kodos http://kodos.sourceforge.net/. I firmly agree using a tool
> like this to learn regular expressions will not only save you a
> ridiculous amount of time spent on trial and error *but* it's really
> easy and makes learning re a joy.
>
> btw, kodos is specifically created with Python's re module in mind.
> Good luck!

kodos does look good but I do not have the pyqt (maybe I am slightly
off) interface to use it on my system..  with another graphic interface
it would be a must try software.



From rmuschall at tecont.de  Wed Sep 13 08:43:28 2006
From: rmuschall at tecont.de (Ralf Muschall)
Date: Wed, 13 Sep 2006 14:43:28 +0200
Subject: Gadfly server startup error
In-Reply-To: <mailman.407.1158108135.5279.python-list@python.org>
References: <g3cjt3-ub6.ln1@prcm.tecont.de>
	<mailman.407.1158108135.5279.python-list@python.org>
Message-ID: <h0blt3-5v9.ln1@prcm.tecont.de>

Steve Holden wrote:

> You're already doing better than I am. On Cygwin 2.5rc2 and Windows 
> 2.4.2 I can't even get it to runs its tests properly:

I don't remember whether I looked into that at all.

...
> NameError: global name 'Server' is not defined

...
> Time to report a bug, methinks? Makes SQLite look good  ...

Carl Waldbieser reported this bug (and a few others, including
fixes) in April 04 (entry 94049[35]).  It seems the project
fell asleep four years ago (but in "News" on SF is a more recent
message from the author pointing to xsdb).

Ralf


From jstroud at mbi.ucla.edu  Wed Sep 27 16:52:25 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 20:52:25 GMT
Subject: Computer Language Popularity Trend
In-Reply-To: <m2lko5wb7e.fsf@Sherm-Pendleys-Computer.local>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159349867.827187.270390@h48g2000cwc.googlegroups.com>
	<m2lko5wb7e.fsf@Sherm-Pendleys-Computer.local>
Message-ID: <dwBSg.5266$TV3.2811@newssvr21.news.prodigy.com>

Sherm Pendley wrote:
> "mark.hoemmen at gmail.com" <mark.hoemmen at gmail.com> writes:
> 
> 
>>Xah Lee wrote:
>>
>>>Computer Language Popularity Trend
>>>
>>
>>Careful there with the sweeping generalizations and quick judgments
> 
> 
> Such things are all Xah does. Look at the distribution list for this
> message - of what possible use is cross-posting something like this to
> five different language groups, unless you're trying to start a cross-
> group argument?
> 
> In short - Please don't feed the trolls.
> 
> sherm--
> 

While Xah does have a reputation for trolling, and the crossposting 
borders on pathological, you must admit that he presents here a bit of 
nice and illuminating research. We probably should encourage him when he 
does worthwhile things, and perhaps, in the future, he will put more 
time towards them and less time towards the trolling for which he is famous.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From siona at chiark.greenend.org.uk  Fri Sep 22 10:01:56 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 22 Sep 2006 15:01:56 +0100 (BST)
Subject: "Directory this source file is in (and a sibling)"
Message-ID: <0Il*1Sprr@news.chiark.greenend.org.uk>

I have a module which needs to know what directory it's in, and to
refer to files in a sibling directory, something like App/src/foo.py
wants to read App/data/conf.xml . But I have no idea in what context
foo.py is going to be run -- it could be being run as a script, it
could be being imported as a module by another script from anywhere in
the directory structure, it's even possible someone will have called
execfile on it. The following works for everything I've tried:

thisdir = os.path.dirname(os.path.normpath(__file__))
siblingdir = os.path.normpath(os.path.join(testdir, os.path.pardir, "sibling"))

However, a colleague expressed disgust at this code, but not really
being a Python programmer had no better suggestions. Is there a neater
way of getting what I want?

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From willie at jamots.com  Wed Sep 20 04:12:33 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 03:12:33 -0500
Subject: byte count unicode string
Message-ID: <4510F7F1.2010807@jamots.com>

 >willie wrote:
 >> Marc 'BlackJack' Rintsch:
 >>
 >>  >In <mailman.313.1158732191.10491.python-l... at python.org>, willie 
wrote:
 >>  >> # What's the correct way to get the
 >>  >> # byte count of a unicode (UTF-8) string?
 >>  >> # I couldn't find a builtin method
 >>  >> # and the following is memory inefficient.

 >>  >> ustr = "example\xC2\x9D".decode('UTF-8')

 >>  >> num_chars = len(ustr)    # 8

 >>  >> buf = ustr.encode('UTF-8')

 >>  >> num_bytes = len(buf)     # 9

 >>  >That is the correct way.

 >> # Apologies if I'm being dense, but it seems
 >> # unusual that I'd have to make a copy of a
 >> # unicode string, converting it into a byte
 >> # string, before I can determine the size (in bytes)
 >> # of the unicode string. Can someone provide the rational
 >> # for that or correct my misunderstanding?

 >You initially asked "What's the correct way to get the  byte countof a
 >unicode (UTF-8) string".
 >
 >It appears you meant "How can I find how many bytes there are in the
 >UTF-8 representation of a Unicode string without manifesting the UTF-8
 >representation?".
 >
 >The answer is, "You can't", and the rationale would have to be that
 >nobody thought of a use case for counting the length of the UTF-8  form
 >but not creating the UTF-8 form. What is your use case?

# Sorry for the confusion. My use case is a web app that
# only deals with UTF-8 strings. I want to prevent silent
# truncation of the data, so I want to validate the number
# of bytes that make up the unicode string before sending
# it to the database to be written.

# For instance, say I have a name column that is varchar(50).
# The 50 is in bytes not characters. So I can't use the length of
# the unicode string to check if it's over the maximum allowed bytes.

name = post.input('name') # utf-8 string

# preferable
if bytes(name) > 50:
	send_http_headers()
	display_page_begin()
	display_error_msg('the name is too long')
	display_form(name)
	display_page_end()

# If I have a form with many input elements,
# I have to convert each to a byte string
# before i can see how many bytes make up the
# unicode string. That's very memory inefficient
# with large text fields - having to duplicate each
# one to get its size in bytes:

buf = name.encode('UTF-8')
num_bytes = len(buf)


# That said, I'm not losing any sleep over it,
# so feel free to disregard any of this if it's
# way off base.


From http  Tue Sep 12 23:17:47 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 20:17:47 -0700
Subject: Random Drawing Simulation -- performance issue
References: <A1AA0083-6BF4-4B96-93AA-0A225EF4D5E6@carnegielearning.com>
	<mailman.411.1158115415.5279.python-list@python.org>
Message-ID: <7xodtk315w.fsf@ruckus.brouhaha.com>

"Travis E. Oliphant" <oliphant.travis at ieee.org> writes:
> > I need to simulate scenarios like the following: "You have a deck of
> > 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,
> > replace it, and repeat N times."
> >
> Thinking about the problem as drawing sample froms a discrete
> distribution defined by the population might help.

Is there some important reason you want to do this as a simulation?
And is the real problem more complicated?  If you draw from the
distribution 100,000 times with replacement and sum the results, per
the Central Limit Theorem you'll get something very close to a normal
distribution whose parameters you can determine analytically.  There
is probably also some statistics formula to find the precise error.
So you can replace the 100,000 draws with a single draw.


From sanzhiyan at gmail.com  Sun Sep 24 19:07:12 2006
From: sanzhiyan at gmail.com (Saizan)
Date: 24 Sep 2006 16:07:12 -0700
Subject: Automatic import PEP
In-Reply-To: <mailman.491.1158981359.10491.python-list@python.org>
References: <mailman.491.1158981359.10491.python-list@python.org>
Message-ID: <1159139232.826655.141830@e3g2000cwe.googlegroups.com>

I think this is obviously great in interactive mode and would also be
very good in the early stages of developing if you have several sources
files. A little error prone maybe, and should be avoided in
"production" code I suppose. (I would like to track each name exactly,
on each installation of python that I may move to)
BTW what would the benefit of the form "lazily import A, B"? If you
name the modules why not import them directly? Maybe you are not sure
you would need them, but I don't think that the overhead of importing
them should matter..
Anyhow, is it just for completion maybe?



From escalation746 at yahoo.com  Thu Sep 21 10:54:56 2006
From: escalation746 at yahoo.com (robin)
Date: Thu, 21 Sep 2006 15:54:56 +0100
Subject: Using Beautiful Soup to entangle bookmarks.html
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<1157677111.804469.61660@p79g2000cwp.googlegroups.com>
	<1157714065.936490.178790@i3g2000cwc.googlegroups.com>
	<1157720105.181682.169290@m73g2000cwd.googlegroups.com>
	<1157723311.085204.168070@i42g2000cwa.googlegroups.com>
	<1157756579.885367.294880@m73g2000cwd.googlegroups.com>
Message-ID: <cs95h2t5qvnftipbmr7a43ol0alche8seh@4ax.com>

"George Sakkis" <george.sakkis at gmail.com> wrote:

>Here's what I came up with:
>http://rafb.net/paste/results/G91EAo70.html. Tested only on my
>bookmarks; see if it works for you.

That URL is dead. Got another?

-----
robin
noisetheatre.blogspot.com


From hpsekhon at googlemail.com  Fri Sep 29 09:08:41 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Fri, 29 Sep 2006 14:08:41 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <1159531181.314800.224180@k70g2000cwa.googlegroups.com>
References: <mailman.801.1159372327.10491.python-list@python.org>
	<1159531181.314800.224180@k70g2000cwa.googlegroups.com>
Message-ID: <451D1AD9.2020308@googlemail.com>

Seeing as there doesn't seem to be a good answer to this (or at least 
not one that we have so far some up with) I have decided to fall back to 
my old friend the unix shell. It's as portable as python, but is very 
flexible and fast at doing real things and will tell me if another 
process by this name is running. If so, print msg and exit. simple.

-h

Hari Sekhon



MaR wrote:
> A very brutal but simple and effective method is to bind() to a socket
> on localhost eg (127.0.0.1, 4711), listen() but never accept().
> Any other process trying to to bind() on the same port will fail..
> When the process dies, the port is released automatically, pending som
> timedelay..
>
> But this assumes you have an execution environment where this is
> acceptable. A sysadmin may have objections ;o)
>
>   


From bignose+hates-spam at benfinney.id.au  Tue Sep 26 21:32:32 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 27 Sep 2006 11:32:32 +1000
Subject: Survival of the fittest
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
Message-ID: <87y7s6m6vj.fsf@benfinney.id.au>

baalbek <rcs at bgoark.no> writes:

> This unassuming scripting language has beaten heavy-weights like
> Java, C++, etc, and this without any serious marketing machine
> behind it.
>
> Why? The language is just so well designed (I miss some of Ruby's
> features, but then, nothing is perfect), robust, stable, and with a
> humongous amount of libraries, and runs without any modification on
> all OS platforms I use.

I attribute much of it to the fact that it's free software -- i.e. its
main implementations have, for its entire life, been freely modifiable
and redistributable by anyone. This gives it a qualitative edge in
adoption over Delphi and Java, at least; and is the primary reason for
"runs on all major platforms".

These days, I never want to invest in an OS or language, or pretty
much any infrastructural computing technology, unless it's free from
vendor lock-in. It's just too damned risky to rely on something that
isn't guaranteed to be supportible beyond a single vendor's whim.

That's "survival of the fittest" in computing technology as I see it
:-)

-- 
 \       "It is forbidden to steal hotel towels. Please if you are not |
  `\        person to do such is please not to read notice."  -- Hotel |
_o__)                                         sign, Kowloon, Hong Kong |
Ben Finney



From tnleeuw at gmail.com  Fri Sep 15 11:58:49 2006
From: tnleeuw at gmail.com (Tim N. van der Leeuw)
Date: 15 Sep 2006 08:58:49 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
Message-ID: <1158335929.720891.209250@i3g2000cwc.googlegroups.com>


Dale Strickland-Clark wrote:
> Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
> a newly inserted record?
>
> I've tried three Python client libraries, including psycopg2, and where they
> support cursor attribute 'lastrowid' (Python DB API 2.0), it is always
> zero.
>
> Anyone figured this out?
>

Hi,

It's of course strictly a PostgreSQL question, but have you tried

select lastval();

?

According to my reading of the postgress manuals, that should do the
trick.

Cheers,

--Tim


> Thanks.
> -- 
> Dale Strickland-Clark
> Riverhall Systems - www.riverhall.co.uk



From ptmcg at austin.rr._bogus_.com  Fri Sep 22 12:38:35 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 22 Sep 2006 16:38:35 GMT
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
Message-ID: <fkUQg.4444$nX4.785@tornado.texas.rr.com>

"Saizan" <sanzhiyan at gmail.com> wrote in message 
news:1158942134.691147.308530 at i42g2000cwa.googlegroups.com...
>
> John Roth wrote:
>
>> The not operator and the bool() builtin produce
>> boolean results. Since bool is a subclass of int,
>> all the integer operations will remain integer
>> operations. This was done for backwards
>> compatability, and is unlikely to change in the 2.x
>> series.
>
> Ok, shame on me, I completely overlooked "not" and it surprises myself
> because it's not like I haven't used it, I just didn't see "not" as an
> operator, maybe because i can't find a __not__ method in bool class.
> (Is it hidden somewhere or is computed in some other way?)
>
> (However (not x) whould be as annoying as 1-x even if a little more
> readable (if you consider lispish parentheses readable):
> Input expression: (not (not x)&(not y)!(not (z|v)))
> Maybe direct eval is just the wrong way of doing this, I should look
> for or make muParser bindings for Python instead..)
>
What about __nonzero__?

class IsOdd(object):
    def __init__(self,n):
        self.val = n

    def __nonzero__(self):
        return self.val % 2

for i in range(4):
    if IsOdd(i):
        print i,"is odd"
    else:
        print i,"is even"

Prints:
0 is even
1 is odd
2 is even
3 is odd


-- Paul




From irmen.NOSPAM at xs4all.nl  Wed Sep 20 14:11:30 2006
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Wed, 20 Sep 2006 20:11:30 +0200
Subject: new string method in 2.5 (partition)
In-Reply-To: <mailman.299.1158709371.10491.python-list@python.org>
References: <40XPg.6$1n3.149@news.tufts.edu>	<4510425e$0$12250$636a55ce@news.free.fr>
	<mailman.299.1158709371.10491.python-list@python.org>
Message-ID: <4511845b$0$4523$e4fe514c@news.xs4all.nl>

Terry Reedy wrote:
> "Bruno Desthuilliers" <bdesth.quelquechose at free.quelquepart.fr> wrote in 
> message news:4510425e$0$12250$636a55ce at news.free.fr...
>> Err... is it me being dumb, or is it a perfect use case for str.split ?
> 
> s.partition() was invented and its design settled on as a result of looking 
> at some awkward constructions in the standard library and other actual use 
> cases.  Sometimes it replaces s.find or s.index instead of s.split.  In 
> some cases, it is meant to be used within a loop.  I was not involved and 
> so would refer you to the pydev discussions.

While there is the functional aspect of the new partition method, I was
wondering about the following /technical/ aspect:

Because the result of partition is a non mutable tuple type containing
three substrings of the original string, is it perhaps also the case
that partition works without allocating extra memory for 3 new string
objects and copying the substrings into them?
I can imagine that the tuple type returned by partition is actually
a special object that contains a few internal pointers into the
original string to point at the locations of each substring.
Although a quick type check of the result object revealed that
it was just a regular tuple type, so I don't think the above is true...

--Irmen


From willie at jamots.com  Wed Sep 20 20:38:44 2006
From: willie at jamots.com (willie)
Date: Wed, 20 Sep 2006 19:38:44 -0500
Subject: byte count unicode string
Message-ID: <4511DF14.5020106@jamots.com>

 >willie wrote:
 >>
 >> Thanks for the thorough explanation. One last question
 >> about terminology then I'll go away :)
 >> What is the proper way to describe "ustr" below?

 >>  >>> ustr = buf.decode('UTF-8')
 >>  >>> type(ustr)
 >> <type 'unicode'>

 >> Is it a "unicode object that contains a UTF-8 encoded
 >> string object?"


John Machin:

 >No. It is a Python unicode object, period.
 >
 >1. If it did contain another object you would be (quite justifiably)
 >screaming your peripherals off about the waste of memory :-)
 >2. You don't need to concern yourself with the internals of a unicode
 >object; however rest assured that it is *not* stored as UTF-8 -- so if
 >you are hoping for a quick "number of utf 8 bytes without actually
 >producing a str object" method, you are out of luck.
 >
 >Consider this example: you have a str object which contains some
 >Russian text, encoded in cp1251.
 >
 >str1 = russian_text
 >unicode1 = str1.decode('cp1251')
 >str2 = unicode1.encode('utf-8')
 >unicode2 = str2.decode('utf-8')
 >Then unicode2 == unicode1, repr(unicode2) == repr(unicode1), there is
 >no way (without the above history) of determining how it was created --
 >and you don't need to care how it was created.


Gabriel Genellina:

 >ustr is an unicode object. Period. An unicode object contains
 >characters (not bytes).
 >buf, apparently, is a string - a string of bytes. Those bytes
 >apparently represent some unicode characters encoded using the UTF-8
 >encoding. So, you can decode them -using the decode() method- to get
 >the unicode object.
 >
 >Very roughly, the difference is like that of an integer and its
 >representations:
 >w = 1
 >x = 0x0001
 >y = 001
 >z = struct.unpack('>h','\x00\x01')
 >All three objects are the *same* integer, 1.
 >There is no way of knowing *how* the integer was spelled, i.e., from
 >which representation it comes from - like the unicode object, it has
 >no "encoding" by itself.
 >You can go back and forth between an integer number and its decimal
 >representation - like astring.decode() and ustring.encode()

I finally understand, much appreciated.



From maxm at mxm.dk  Mon Sep 25 10:00:45 2006
From: maxm at mxm.dk (Max M)
Date: Mon, 25 Sep 2006 16:00:45 +0200
Subject: A critique of cgi.escape
In-Reply-To: <mailman.563.1159190394.10491.python-list@python.org>
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
Message-ID: <4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>

Fredrik Lundh skrev:
> Jon Ribbens wrote:

>> By the way, if you could try and put across your proposed arguments as
>> to why you don't favour this suggested change without the insults and
>> general rudeness, it would be appreciated.
> 
> I've already explained that, but since you're convinced that your use
> case is more important than other use cases, and you don't care about
> things like stability and respect for existing users of an API, nor
> the cost for others to update their code and unit tests, I don't see
> much need to repeat myself.  Breaking things just because you think
> you can simply isn't the Python way of doing things.


This thread is highly entertaining but perhaps not that productive.


Lawrence is right that the escape method doesn't work the way he expects 
it to.

Rewriting a library module simply because a developer is surprised is a 
*very* bad idea. It would break just about every web app out there that 
uses the escape module and uses testing. Which is probably most of them. 
That could mean several man years of wasted time. It also makes the 
escaped html harder to read for standard cases.

Frederik is right that doing so is utterly ... well let us call it 
&quot;unproductive&quot;. Stupid is such a harsh word ;-)

Whether someone finds the bloat miniscule and thus a small enough change 
to warrant the rewrite does not really matter.

Lawrence is free to write a wrapper and use that instead.

     my_escape = lambda st: cgi.escape(st, 1)

So. Lawrence is happy, and the escape works as expected. Several man 
years has been saved.

Max M


From dale at riverhall.nospam.co.uk  Fri Sep 15 14:31:39 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Fri, 15 Sep 2006 19:31:39 +0100
Subject: PostgreSQL, psycopg2 and OID-less tables
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158335929.720891.209250@i3g2000cwc.googlegroups.com>
Message-ID: <gkCOg.4747$Ur5.2750@fe77.usenetserver.com>

Tim N. van der Leeuw wrote:
> 
> Hi,
> 
> select lastval();
> 
Thanks, that was useful.
-- 
Dale Strickland-Clark
Riverhall Systems - www.riverhall.co.uk



From p.lavarre at ieee.org  Thu Sep 28 19:47:21 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 28 Sep 2006 16:47:21 -0700
Subject: Python CTypes translation of (pv != NULL)
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.654.1159264176.10491.python-list@python.org>
	<1159299282.448590.325200@h48g2000cwc.googlegroups.com>
Message-ID: <1159487241.188213.62060@b28g2000cwb.googlegroups.com>

Future Googlers might like this thread to end with the Thomas Heller's
brief conclusive review:

/// Copied 2006-09-28 from
/// http://starship.python.net/crew/theller/moin.cgi/CodeSnippets

1.2 Check for NULL ctypes pointers

The truth value of any NULL ctypes pointer instance is False.

So, this C code

    if (pv == NULL)
        /* handle NULL pointer */
    else
        /* handle non-NULL pointer */

translates to this Python code

    if not pv:
        # handle NULL pointer
    else:
        # handle non-NULL pointer

The above is true for instances of c_void_p, c_char_p, c_wchar_p, and
POINTER(some_ctype).

///



From metaperl at gmail.com  Thu Sep 28 10:13:17 2006
From: metaperl at gmail.com (metaperl)
Date: 28 Sep 2006 07:13:17 -0700
Subject: startswith() and endswith() for re's would be more intuitive
Message-ID: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>

I just finished answering a question in #python because someone tried
to match using ... well.. match()
but did not realize that match() is actually startswith() for regexps.

I suggest:
re.compile('blah').atstartof(string)
re.compile('blah').atendof(string)

But it will never happen.



From grybkin at gmail.com  Fri Sep 15 11:24:27 2006
From: grybkin at gmail.com (Gleb Rybkin)
Date: 15 Sep 2006 08:24:27 -0700
Subject: high level, fast XML package for Python?
In-Reply-To: <OIWdnc8WMLf2KpfYnZ2dnUVZ_omdnZ2d@comcast.com>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<4mvnqmF7r4a3U1@uni-berlin.de>
	<OIWdnc8WMLf2KpfYnZ2dnUVZ_omdnZ2d@comcast.com>
Message-ID: <1158333867.203240.162560@d34g2000cwd.googlegroups.com>

Okay, thanks!

Steven Bethard wrote:
> Diez B. Roggisch wrote:
> > Gleb Rybkin wrote:
> >
> >> I searched online, but couldn't really find a standard package for
> >> working with Python and XML -- everybody seems to suggest different
> >> ones.
> >>
> >> Is there a standard xml package for Python? Preferably high-level, fast
> >> and that can parse in-file, not in-memory since I  have to deal with
> >> potentially MBs of data.
> >
> > cElementTree and lxml (which is API-compatible to the former). cElementTree
> > has an incremental parser, which allows for lager-than-memory-files to be
> > processed.
>
> In Python 2.5, cElementTree and ElementTree will be available in the
> standard library as xml.etree.cElementTree and xml.etree.ElementTree.
> So learning them now is a great idea.
> 
> STeVe



From gagsl-py at yahoo.com.ar  Thu Sep 14 00:31:49 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 14 Sep 2006 01:31:49 -0300
Subject: parameter files
In-Reply-To: <1158207004.664774.145740@i3g2000cwc.googlegroups.com>
References: <1158190017.832356.180050@h48g2000cwc.googlegroups.com>
	<1158197393.728067.179420@e3g2000cwe.googlegroups.com>
	<1158207004.664774.145740@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060914012215.056e7c20@yahoo.com.ar>

At Thursday 14/9/2006 01:10, Russ wrote:

> > I would try a configuration file, instead of a python module.
> > See ConfigParser:
> > <http://docs.python.org/lib/module-ConfigParser.html>.
> > You can save values for each "run" in a separate [section].
> > Execfile is a pretty big hammer for this.
>
>Hey, that looks interesting, but those docs don't do it for me. Can you
>point me to some more extensive examples of how to use ConfigParser?

Just forget about interpolation and such; declare a section for each 
run in your config file:

[run_name_one]
a=123
b=Test
c=4.0

[run_two]
a=456
b=Whatever
c=0.1

config = ConfigParser.ConfigParser()
config.read(filename)
a = config.getint('run_two','a') # a==456
b = config.get('run_name_one','b') # b=='Test'
section = 'run_two'
c = config.getfloat(section,'c') # c==0.1


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From sjdevnull at yahoo.com  Tue Sep 12 03:15:41 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 12 Sep 2006 00:15:41 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <mailman.302.1158018336.5279.python-list@python.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<f44c02fe0609111444q5735310ewfb93bd515421e005@mail.gmail.com>
	<mailman.302.1158018336.5279.python-list@python.org>
Message-ID: <1158045341.284783.321210@h48g2000cwc.googlegroups.com>

Mike Owens wrote:
> And if you say SQLite misrepresents itself,
> then what do you say about MySQL, which until version 5 didn't have
> views or triggers? In fact, it didn't even have subselects until
> version 4. For a period of years, SQLite had more mainstream SQL
> features than MySQL. Yet you don't see people going around claiming
> that MySQL is not an SQL database -- that it's misrepresenting itself.

Just to be fair...

You do hear many people claiming exactly that, and the primary
complaint is often exactly the same one that's being levelled against
sqlite here (it's incredibly lax with types and does sometimes
mystifying conversions rather than pointing out programmer errors--and
yes that's intentionally loaded language that I don't necessarily agree
with, it's a common argument though.).  The lack of subselects was also
a major sticking point for a lot of people, as are other major missing
SQL features.

Not having used sqlite I can't comment on it in particular.



From eurleif at ecritters.biz  Sat Sep 23 17:04:57 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Sat, 23 Sep 2006 17:04:57 -0400
Subject: Reverse a String?
In-Reply-To: <mailman.505.1159045338.10491.python-list@python.org>
References: <mailman.505.1159045338.10491.python-list@python.org>
Message-ID: <4515a15f$0$19913$4d3efbfe@news.sover.net>

Gregory Pi?ero wrote:
> Is my mind playing tricks on me? I really remember being able to
> reverse a string as in:
> 
> text='greg'
> print text.reverse()
>>> 'gerg'

That method has never existed AFAIK. Maybe you're thinking of the 
reverse() method on lists?

In any case, the you can reverse strings in a couple of ways:

  >>> ''.join(reversed('foo'))
  'oof'
  >>> 'foo'[::-1]
  'oof'


From skip at pobox.com  Tue Sep  5 13:10:59 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 5 Sep 2006 12:10:59 -0500
Subject: How ahead are you guys in the (Python) real world?
In-Reply-To: <ed5jde$lu3$1@panix3.panix.com>
References: <1156821234.820929.299740@p79g2000cwp.googlegroups.com>
	<ed4jjl$e6t$1@panix1.panix.com> <vMrJg.484475$Mn5.394204@pd7tw3no>
	<ed5jde$lu3$1@panix3.panix.com>
Message-ID: <17661.44963.604636.110447@montanaro.dyndns.org>

(ack! forgot to push the send button several days ago - hopefully this isn't
woefully out-of-date now...)

    neil> Based on the number of people still using 2.3, it looks to me like
    neil> there would be interest.

    aahz> Yes; the real question is whether there is enough labor available
    aahz> to make it happen.

Just to make it clear for people with an interest in another 2.3 release who
might not read python-dev, here's what needs to happen.  Someone(s) needs to
consider which bug fixes applied to 2.4 (and maybe CVS head) since the last
2.3 release should be applied to the 2.3 branch.  That entails a few steps:

    1. scan the 2.4 checkins for bug fixes (scanning Misc/NEWS might be
       sufficient) 

    2. decide which ones apply to the 2.3 branch (some might not if they
       were bugs that were introduced in 2.4 or because code structure
       changes would make it too painful to add to 2.3)

    3. work up a patch with test cases against the 2.3 code (simplified by
       starting with the 2.4 patch in most cases) that implements the fix

    4. test the 2.3 branch as patches are applied to make sure there are no
       regressions against your own code  base.

All these steps are necessary to some degree, though one person doesn't have
to do all four steps for any given bug fix.  Any help you can give would be
appreciated.

Skip


From eric.talevich at gmail.com  Fri Sep 22 21:58:46 2006
From: eric.talevich at gmail.com (Eric)
Date: 22 Sep 2006 18:58:46 -0700
Subject: Replacing line in a text file
In-Reply-To: <mailman.475.1158949525.10491.python-list@python.org>
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
	<slrneh889u.1c8.horpner@FIAD06.norwich.edu>
	<mailman.475.1158949525.10491.python-list@python.org>
Message-ID: <1158976726.283613.14530@i42g2000cwa.googlegroups.com>


Tim Chase wrote:
> > That is, until such time as Guido finalizes PyESP.
> >
> > import PyESP
> > e = ESP.mindread(CSUIDL, "r")
>
> Sounds like an extension to the __future__ module.
>
>  >>> from __future__ import answers
>  >>> answers.answer(op.question)
>
> How many other languages have a time-machine built-in, that will
> take the programmer into the future?
>
> No apache mod_precognition.
> Perl offers no "use Eventual::Solution".
> C/C++ offers no "#include <someday/answer.h>".
> Same goes for Java's lack of "import java.ball.crystal"
>
> Yet another reason to be a python programmer. :)
>
> -tkc

Oh, that time machine of his...

The only thing I know of that compares is Vim 7.0's :later command.



From http  Sun Sep 10 23:58:20 2006
From: http (Paul Rubin)
Date: 10 Sep 2006 20:58:20 -0700
Subject: Python on handhelds
References: <1157946461.741174.152870@m73g2000cwd.googlegroups.com>
Message-ID: <7x1wqj12cj.fsf@ruckus.brouhaha.com>

"Nick" <nick.kigs at gmail.com> writes:
> I have never programmed in Python a day in my life. My group is working
> on developing an application on the Dell Axim hand held that has a
> tight deadline. I have heard that Python is particularly advantageous
> in rapid prototyping and deployment. I would like to lean this way if I
> can. Does anyone know if I can run Python on the Dell Axim handheld. It
> runs Windows CE. If so, what all is needed to make this possible.

Someone did a WinCE port a while back, but I don't think it's actively
used much.  The approach might be reasonable if you're an expert with
some time on your hands, but for a newcomer with an onrushing
deadline, you may be better off using whatever you're already using
(VB or whatever), and keeping Python in mind for some future project.


From rogue_pedro at yahoo.com  Sat Sep  9 03:17:04 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 9 Sep 2006 00:17:04 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
	<1157762409.805195.231770@m73g2000cwd.googlegroups.com>
	<1157767525.761220.117190@d34g2000cwd.googlegroups.com>
	<1157768144.939694.81730@b28g2000cwb.googlegroups.com>
Message-ID: <1157786224.125945.232290@i3g2000cwc.googlegroups.com>

bvdp at xplornet.com wrote:
<snip>
> Thanks for that, Carl. I think that using the loop is probably what
> I'll end up doing. I had no idea that the listcomp thing would be quite
> a complicated as it is appearing. I had it in my mind that I was
> missing some obvious thing which would create a simple solution :)
>
> Mind you, there are some interesting bits and pieces of code in this
> thread!

List (and generator) comprehensions are not as bad as all that,
although it took me a little while to figure them out too.  ;-)

They are basically normal for loops with optional if statements:

res = [expression1 for var in some_iter if expression2]

is just like:

res = []
for var in some_iter:
    if expression2:
        res.append(expression1)


More complex comprehensions can be broken down the same way (like Rob
Williscroft did for his fourth attempt):

res = [i for i, x in enumerate(seq) for _ in xrange(x)]

becomes:

res = []
for i, x in enumerate(seq):
    for _ in xrange(x):
        res.append(i)

Doing this can help you puzzle out variables and if statements in
complex list comps, as the following, admittedly contrived, examples
indicate:

R = range(10)

res = []
for n in R:
    if n % 2:
        for m in range(n):
            res.append(m)

print res == [m for n in R if n % 2 for m in range(n)]

res2 = []
for n in R:
    for m in range(n):
        if n % 2:
            res2.append(m)

print res2 == [m for n in R for m in range(n) if n % 2]

res3 = []
for n in R:
    for m in range(n):
        if m % 2:
            res3.append(m)

print res3 == [m for n in R for m in range(n) if m % 2]


# The above prints True three times.

Of course, if your loops get much more complicated than this you should
probably "spell them out" anyway.

HTH,
~Simon



From kylotan at gmail.com  Wed Sep 27 10:15:08 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 27 Sep 2006 07:15:08 -0700
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <mailman.743.1159304856.10491.python-list@python.org>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<mailman.743.1159304856.10491.python-list@python.org>
Message-ID: <1159366508.538841.252660@e3g2000cwe.googlegroups.com>

skip at pobox.com wrote:
> metaperl> I'm wondering if anyone has ever found a practical use for the
>     metaperl> else branch?
>
> Yeah, I use it from time to time:
>
>     for foo in bar:
>         if foo matches some condition:
>             print "sail to tahiti!"
>             break
>     else:
>         print "abandon ship!"

As a C++ programmer (which I'm sure undermines my argument before
you've even read it...), this feels 'backwards' to me. Although I am no
purist, the 'else' typically implies failure of a previous explicit
condition, yet in this case, it's executed by default, when the
previous clause was successfully executed. It would seem more natural
if the else clause was triggered by 'bar' being empty, or even if the
loop was explicitly broken out of, though I'm sure that would make the
construct much less useful.

-- 
Ben Sizer



From gh at gregor-horvath.com  Tue Sep 19 10:19:15 2006
From: gh at gregor-horvath.com (Gregor Horvath)
Date: Tue, 19 Sep 2006 16:19:15 +0200
Subject: win32 Service: path to .py script
Message-ID: <4d818$450ff76d$506c2949$8802@news.chello.at>

Hi,

I have a testservice.py (see below). I installed the Windows-Service
successfully. (via commandlineoption install)
The problem is that it runs only when it is in c:\windows\system32 or in
the python path.
I added the desired path (Y:\) to the PYTHONPATH environment variable
for the system account and rebooted.
When I start command line python and do a import testservice everything
is fine.
Starting the service with the script only in Y:\ gives the error in the
event log:

Python could not import the service's module

exceptions.ImportError: No module named testservice

Thanks for your help.

--
Greg

testservice.py:

import win32serviceutil, win32service
import servicemanager
import win32api
import win32event
import sys

class TestPipeService(win32serviceutil.ServiceFramework):
    _svc_name_ = "MDE Dispatcher"
    _svc_display_name_ = "MDE-Dispatcher"
    _svc_description_ = "Dispatches machine events from the Siemens ODC
to registrered MDE clients (windows) over the network via XML-RPC"
    def __init__(self, args):
        win32serviceutil.ServiceFramework.__init__(self, args)
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)

    def SvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        win32event.SetEvent(self.hWaitStop)


    def SvcDoRun(self):
        # Write an event log record - in debug mode we will also
        # see this message printed.
        servicemanager.LogMsg(
                servicemanager.EVENTLOG_INFORMATION_TYPE,
                servicemanager.PYS_SERVICE_STARTED,
                (self._svc_name_, '')
                )

        while 1:
            win32api.Sleep(2)
            rc = win32event.WaitForSingleObject(self.hWaitStop, 2000)
            if rc == win32event.WAIT_OBJECT_0:
                break


        # Write another event log record.
        servicemanager.LogMsg(
                servicemanager.EVENTLOG_INFORMATION_TYPE,
                servicemanager.PYS_SERVICE_STOPPED,
                (self._svc_name_, " TEST ")
                )


if __name__=='__main__':
    win32serviceutil.HandleCommandLine(TestPipeService)



From michael at stroeder.com  Mon Sep 18 04:35:55 2006
From: michael at stroeder.com (=?ISO-8859-1?Q?Michael_Str=F6der?=)
Date: Mon, 18 Sep 2006 10:35:55 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <bc22u3-si6.ln1@nb2.stroeder.com>

nicolasfr at gmail.com wrote:
> 
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info

Frankly I'm tired of these yet-another-wiki announcements!
Who is supposed to fill them with content?

If you have improvements to the official docs put them into Python's SF
tracker:
http://sourceforge.net/tracker/?func=add&group_id=5470&atid=305470

Ciao, Michael.


From rdm at rcblue.com  Mon Sep 11 00:08:34 2006
From: rdm at rcblue.com (Dick Moores)
Date: Sun, 10 Sep 2006 21:08:34 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <J_2Ng.785$5i7.332@newsreading01.news.tds.net>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
	<4g%Mg.770$5i7.457@newsreading01.news.tds.net>
	<mailman.235.1157932438.5279.python-list@python.org>
	<J_2Ng.785$5i7.332@newsreading01.news.tds.net>
Message-ID: <7.0.1.0.2.20060910210459.05ebcdf8@rcblue.com>

At 06:30 PM 9/10/2006, Kent Johnson wrote:
>Dick Moores wrote:
>
> > I downloaded Python (7) from
> > http://www.textpad.com/add-ons/synn2t.html and put the file
> > PythonV2.4.syn in C:\Program Files\TextPad 4\system .
> >
> > However, no syntax highlighting is showing up. so I must have done
> > something wrong. Do I have to do something other than put
> > PythonV2.4.syn in C:\Program Files\TextPad 4\system ?
>
>One more step - make a new Document Class for Python (in the prefs).
>Associate it with *.py, turn on syntax highlighting and select the
>syntax file you downloaded.

OK. Done.

> > Also, why do you use TextPad instead of IDLE?
>
>You're kidding, right?

No. Tell me, please. Macros? Comparing files? What else?

Dick





From smith.patrick__NOSPAM__ at gmail.com  Thu Sep 28 23:25:52 2006
From: smith.patrick__NOSPAM__ at gmail.com (Patrick Smith)
Date: Thu, 28 Sep 2006 23:25:52 -0400
Subject: wxPython and threading issue
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
	<1159499923.311082.63610@h48g2000cwc.googlegroups.com>
Message-ID: <an0Tg.125766$sS1.18589@read1.cgocable.net>

Hi,
Thanks for your reply.

<sjdevnull at yahoo.com> wrote in message
news:1159499923.311082.63610 at h48g2000cwc.googlegroups.com...
> Patrick Smith wrote:
> > Hi,
> > I'm hoping someone here will be able to help as I've been struggling
with
> > this problem for a few days now.
> >
> > I'm working on an application that is creating a ProgressDialog, and
then
> > creating a thread that runs a function from another module in the
program.
> >
> > The problem is, when the cancel button on the ProgressDialog is pressed,
the
> > thread that was created continues to run.  How can I make it so that
when
> > the cancel button on the dialog is clicked, the spawned thread dies?
>
> Have the main thread set a flag telling the worker thread to exit, and
> have the worker thread check that periodically when it knows it's in a
> safe state to exit.
>

This would work, unfortunately, the thread that it spawns calls a function
in a loop, that function has an incredibly long run-time, on the order of
minutes (possibly hours depending on the input), and that function, its self
is multithreaded.
This means that the worker thread could only check the flag after each
completion of this long-running function.

Given that this is the situation, is it possible to do what I mentioned
above?  Or does the long running function prevent any nice way of doing
this?




From nomail at nixmail.com  Sat Sep  2 08:20:38 2006
From: nomail at nixmail.com (DarkBlue)
Date: Sat, 02 Sep 2006 20:20:38 +0800
Subject: Netstat Speed
References: <44f95c2c@127.0.0.1> <slrnefiqcj.j6l.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <44f97717@127.0.0.1>

Sybren Stuvel wrote:

> DarkBlue enlightened us with:
>> Following code works .
> 
> No it doesn't - it's indented badly. I guess you mean something like:
> 
> def activeip(checkip):
>      # if there is any line returned we set activeb to 1 indicating that
>      # this ip is active during a netstat run
>      activeb=0
>      for line in os.popen("netstat -a -n | grep '%s'" % checkip) :
>           s=line
>          if s <>'' :
>             activeb=1
>      return activeb
> 
> Also try to use != instead of <>. Being equal or not has nothing to do
> with being larger or smaller.
> 
>> My question is can I make it faster ?
> 
> As soon as you set activeb=1, it no longer changes to any other value.
> That means that you could immediately return from that point. It's
> also cleaner to actually close an open file:
> 
> def activeip(checkip):
>      # if there is any line returned we set activeb to 1 indicating that
>      # this ip is active during a netstat run
>      activeb = 0
>      netstat = os.popen("netstat -a -n | grep '%s'" % checkip)
>      for line in netstat:
>          s = line
>          if s:
>             activeb = 1
>             break
>      netstat.close()
>      return activeb
> 
> Another way would be to let grep do the work for you. Pass it the '-q'
> option and check its exit code.
> 
> Sybren

Thank you for pointing that out.
Speed did not improve , but it definitely
is cleaner code now.

Have a nice day
Db



From reid at reidster.net  Wed Sep  6 12:21:56 2006
From: reid at reidster.net (Reid Priedhorsky)
Date: Wed, 06 Sep 2006 11:21:56 -0500
Subject: Secure Postgres access
Message-ID: <pan.2006.09.06.16.21.55.818191@reidster.net>

Hi folks,

I would like to access a remote Postgres server from a Python program in a
secure way. Postgres doesn't currently listen to the Internet for
connections, and I'd prefer to keep it that way.

I know how to forward ports using SSH, but I don't like doing this because
then anyone who knows the port number can connect to Postgres over the
same tunnel. (I'm not the only user on the client machine.)

What I envision is something like wrapping an SSH connection which then
opens psql once connected, but I'm not too picky.

Both Postgres and the Python program are running on Linux.

Any ideas?

Thanks very much for any help.

Reid


From reply at group.invalid  Mon Sep 25 12:26:38 2006
From: reply at group.invalid (Pom)
Date: Mon, 25 Sep 2006 16:26:38 GMT
Subject: Remap Mysql tuple to dictionary
Message-ID: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>

Hello

I want to convert a Mysql resulset to a dictionary.

I made some code myself, and want to ask you if I do this the right way.

def remapmysql(a):
     return (a[0], (a[1:]))

def test_map():
     count = 100000 # count of simulated records
     l1 = range(0, count)
     l2 = range(count , 2 * count )
     l3 = range(2 * count, 3 * count )
     z1 = zip(l1, l2, l3) # simulate a mysql resultset

     d1 = dict(map(remapmysql,z1))

     return d1


From asterocean at gmail.com  Sat Sep 23 03:32:27 2006
From: asterocean at gmail.com (astarocean)
Date: 23 Sep 2006 00:32:27 -0700
Subject: how to remember login in zope?
Message-ID: <1158996747.919222.312610@h48g2000cwc.googlegroups.com>

how to remember login in zope?
so when user came back , they needn't input username and password
again.

i'm using zope,extensiveuserfolder and cookiecrumbler,
exuserfolder is set to cookie-based authentication.

i'm not using cmf or plone , how could i handle this?
thanks a lot.

i'm working around this for two days and surfing a lot of pages but
still felt confused, any suggestion would be appreciated.



From steve at holdenweb.com  Wed Sep  6 20:16:27 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 01:16:27 +0100
Subject: Path?
In-Reply-To: <1157563909_62823@sp6iad.superfeed.net>
References: <1157563909_62823@sp6iad.superfeed.net>
Message-ID: <ednobl$bif$1@sea.gmane.org>

Dr. Pastor wrote:
> I installed Python 2.5 on Windows XP.
> I got the following system that works well.
> ---
> Python 2.5b3 (r25b3:51041, Aug  3 2006, 09:35:06) [MSC v.1310 32 bit 
> (Intel)] on
> win32 Type "copyright", "credits" or "license()" for more information.
> 
> IDLE 1.2b3
>  >>> import sys
>  >>> sys.path
> ['C:\\Python25\\Lib\\idlelib', 'C:\\WINDOWS\\system32\\python25.zip',
> 'C:\\Python25\\DLLs', 'C:\\Python25\\lib', 'C:\\Python25\\lib\\plat-win',
> 'C:\\Python25\\lib\\lib-tk', 'C:\\Python25', 
> 'C:\\Python25\\lib\\site-packages',
> 'C:\\Python25\\lib\\site-packages\\wx-2.6-msw-ansi']
>  >>>
> ---
> Question: How did I end up with the second item in path?

That was added as a part of the interpreter's initialisation.

> Is that a zip file?

Well, it would be ...

> There is no such a file in system32.

... if it existed! Python has been capable of importing from zip files 
for quite a while.

> What would be the correct way to set path to assist the search?

Well, that depends. If you want your modules to take precedence over 
similarly-named modules in the standard library (which can be risky if 
unexpected name clashes occur) then use

sys.path.insert(0, path)

where "path" holds the path of your choice. If you want to search other 
directories once the standard list has been exhausted then you should use

sys.path.append(path)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rtw at freenet.co.uk  Mon Sep 25 16:47:37 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Mon, 25 Sep 2006 15:47:37 -0500
Subject: Printing a percent sign
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<Xns9849DC7DB4102rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <Xns9849DDD0FCDC8rtwfreenetREMOVEcouk@216.196.109.145>

Rob Williscroft wrote in news:Xns9849DC7DB4102rtwfreenetREMOVEcouk@
216.196.109.145 in comp.lang.python:

>  wrote in news:1159216705.649649.116260 at d34g2000cwd.googlegroups.com in 
> comp.lang.python:
> 
>> Hi all. How do I escape the "%" sign in a print statement so that it
>> prints? Thanks.
>> 
> 
> print "%%"
> 

Ok, confused by the simplicity of the question.

Real answer is:

print "%"

But the real question was "how to print a % whern doing % formating",

acuracy = 100
print "this is %d%% more acurate than my previous answer" % acuracy 


Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From http  Sat Sep 30 19:47:45 2006
From: http (Paul Rubin)
Date: 30 Sep 2006 16:47:45 -0700
Subject: loop over list and modify in place
References: <mailman.1006.1159638327.10491.python-list@python.org>
Message-ID: <7xpsdchq72.fsf@ruckus.brouhaha.com>

"Daniel Nogradi" <nogradi at gmail.com> writes:
> Is looping over a list of objects and modifying (adding an attribute
> to) each item only possible like this?
> 
> mylist = [ obj1, obj2, obj3 ]
> 
> for i in xrange( len( mylist ) ):
>     mylist[i].newattribute = 'new value'

for m in mylist:
   m.newattribute = 'new value'


From hancock at anansispaceworks.com  Sat Sep  9 16:39:23 2006
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Sat, 09 Sep 2006 15:39:23 -0500
Subject: Can I make unicode in a repr() print readably?
Message-ID: <4503267B.4080507@anansispaceworks.com>

I still run into my own ignorance a lot with unicode in Python.

Is it possible to define some combination of __repr__, __str__,
and/or __unicode__ so that the unicode() wrapper isn't necessary
in this statement:

 >>> print unicode(jp.concepts['adjectives']['BLUE'][0])
<GLOSS: ??, cl=None, {'wd': u'\u9752\u3044'}>

(i.e. can I make it so that the object that print gets is already
unicode, so that the label '??' will print readably?)



Or, put another way, what exactly does 'print' do when it gets
a class instance to print? It seems to do the right thing if
given a unicode or string object, but I cant' figure out how to
make it do the same thing for a class instance.

I guess it would've seemed more intuitive to me if print attempted
to use __unicode__() first, then __str__(), and then __repr__(). But
it apparently skips straight to __str__(), unless the object is already
a unicode object.  (?)



The following doesn't bother me:

 >>> jp.concepts['adjectives']['BLUE'][0]
<GLOSS: \u9752\u3044, cl=None, {'wd': u'\u9752\u3044'}>

And I understand that I might want that if I'm working in
an ASCII-only terminal.  But it's a big help to be able to
read/recognize the labels when I'm working with localized
encodings, and I'd like to save the extra typing if I'm
going to be looking at a lot of these

So far, I've tried overriding the __unicode__ method to return
the unicode representation (doesn't seem like print calls it,
though), and I've tried returning the same thing from __repr__,
but the latter causes this unpleasant result:

 >>> print jp.concepts['adjectives']['BLUE'][0]
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
UnicodeEncodeError: 'ascii' codec can't encode characters in position 
8-9: ordinal not in range(128)

so I don't think I want to do that.

Advice?

Terry

-- 
Terry Hancock (hancock at AnansiSpaceworks.com)
Anansi Spaceworks http://www.AnansiSpaceworks.com




From ldo at geek-central.gen.new_zealand  Mon Sep 25 03:04:41 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 19:04:41 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<ef5lb9$h1k$2@lust.ihug.co.nz>
	<ef5ncc$uus$1@news.albasani.net>
	<mailman.524.1159095305.10491.python-list@python.org>
Message-ID: <ef7v0e$mn8$2@lust.ihug.co.nz>

In message <mailman.524.1159095305.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Georg Brandl wrote:
> 
>> A function is broken if its implementation doesn't match the
>> documentation.
> 
> or if it doesn't match the designer's intent.  cgi.escape is old enough
> that we would have noticed that, by now...

_We_ certainly have noticed it.


From aahz at pythoncraft.com  Tue Sep 26 01:13:14 2006
From: aahz at pythoncraft.com (Aahz)
Date: 25 Sep 2006 22:13:14 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <efacta$8ai$1@panix3.panix.com>

In article <1159225798.492198.89880 at b28g2000cwb.googlegroups.com>,
walterbyrd <walterbyrd at iname.com> wrote:
>
>If so, I doubt there are many. 
>I wonder why that is?

Once upon a time, I was a Perl programmer.  Then my job forced me to
learn Python.  Once I got hooked, I never looked back.  I've had two
different jobs as a full-time Python programmer -- my current company has
existed for ten years on a platform built with Python.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"LL YR VWL R BLNG T S"  -- www.nancybuttons.com


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Tue Sep 19 17:43:01 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Tue, 19 Sep 2006 23:43:01 +0200
Subject: Replace single character at given position
References: <ke46u3-b2j.ln1@thunderbird.tld>
Message-ID: <4nb6j5F98nr6U1@individual.net>

Martin Kulas wrote:

> From programming languages like C I expect something like that:
> 
>>>> idx = 1
>>>> s1 = "pxthon"
>>>> s1[idx] = 'y'
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: object does not support item assignment
> 
> It does not work :-(

Yes, Python strings are immutable.
 
> Is this a typical approach in Python to replace one character
> in a string? Are there better (faster) ways to achieve my goal?

Is speed *really* your primary goal? :)

You could also convert the string to a list, do the changes, and
convert back.

Regards,


Bj?rn

-- 
BOFH excuse #259:

Someone's tie is caught in the printer, and if anything else gets
printed, he'll be in it too.



From marleyziggy at hotmail.com  Fri Sep  1 18:49:31 2006
From: marleyziggy at hotmail.com (Gimble)
Date: 1 Sep 2006 15:49:31 -0700
Subject: tp_members and T_ULONGLONG ("C" Python modules)
Message-ID: <1157150971.428958.193590@74g2000cwt.googlegroups.com>

While writing custom modules, I've found the tp_members type entry very
useful.  (As background, it is a pointer to a constant structure that
defines direct access sizes and types of member variables within your
custom PyObject ).

However, the defined type enumeration (including T_USHORT, T_UINT,
etc.) does not have a conversion type for a 64-bit signed or unsigned
type.  Additional defines for T_LONGLONG and T_ULONGLONG seemed
appropriate.

So, with a minimum of digging, I added an appropriate set of #defines
to structmember.h and conversion code to PyMember_SetOne() and
PyMember_GetOne(), and the definitions magically now work in my module.
 Consider me happy...

...until I start weeding through the "Intro to Development" document
(and associated links) at python.org.  After all, I'd like to donate my
changes to Python so that others can benefit from my own development.

Now I'm confused.  A PEP seems a bit... extravagant for such a
relatively small change to two source files, probably 30-50 lines in
total.  And yet, I'm not sure I should just enter a patch entry on
SourceForge, since it's not really a bug (it's a new feature), but it's
hardly anything like a significant enhancement.

So, can someone offer advice on the best way for me to proceed?  I'd
like to figure out the "right way" to submit the changes for approval
into the next release of Python, as I figure that 64-bit support is
something people will find more and more useful going forward.  Oddly
enough, ParseTuple() already handles 64-bit values, so I'm apparently
not alone in that opinion. :)

Help!



From fiedzia at fiedzia.prv.pl  Mon Sep 25 13:29:29 2006
From: fiedzia at fiedzia.prv.pl (Maciej Dziardziel)
Date: Mon, 25 Sep 2006 19:29:29 +0200
Subject: Emphasizing a gtk.Label
References: <ef91fd$ngg$1@hefestos.uned.es>
Message-ID: <20060925172929.2AF4.0.NOFFLE@fiedzia.homeip.net>

ravenheart wrote:

> I want to give some emphasis to a Label from gtk, without breaking gnome
> theme (i.e. not changing colors, etc)
> I think bolding it would be a good option (could be also underscoring
> but don't like it at all).
> What would be the best solution? How to do it? I have found how to
> change colors and underscoring but nothing else.
> Thanks.

Just set text to "<b> whatever</b>".

-- 
Maciej "Fiedzia" Dziardziel (maciejdziardziel at poczta.wp.pl)


Inside his head is a little dust particle with a sign that says 'Space    
   for Rent' -Caitieboo



From Bulkan at gmail.com  Wed Sep 27 21:07:19 2006
From: Bulkan at gmail.com (placid)
Date: 27 Sep 2006 18:07:19 -0700
Subject: Starting Win32 Service
In-Reply-To: <mailman.780.1159344410.10491.python-list@python.org>
References: <1159331968.764830.78640@b28g2000cwb.googlegroups.com>
	<mailman.780.1159344410.10491.python-list@python.org>
Message-ID: <1159405639.780556.173260@b28g2000cwb.googlegroups.com>


Tim Golden wrote:
> [placid]
> | Using Tim Golden's wmi module you can get the service names
> |
> | import wmi
> | c = wmi.WMI ()
> | stopped_services = c.Win32_Service (StartMode="Auto", State="Stopped")
> | if stopped_services:
> |   for s in stopped_services:
> |     print s.Caption, "service is not running"
> | else:
> |   print "No auto services stopped"
> |
> | but how do i start services that are stopped?
>
> <code>
> import wmi
> c = wmi.WMI ()
> for method in c.Win32_Service._methods:
>   print method
>
> #
> #... includes StartService
> #
>
> print c.Win32_Service.StartService
>
> # <function StartService () => (ReturnValue)>
>
> #
> # Therefore, to start all non-running auto services (!)
> #
> for service in c.Win32_Service (StartMode="Auto", State="Stopped"):
>   print service.Caption
>   service.StartService ()
>
> </code>
>
> TJG
>

Thanks for that.

Now i was trying to use service.ChangeStartMode but each time i pass in
an argument i get the error;

#TypeError: __call__() takes exactly 1 argument (2 given)

but;

>>> print service.ChangeStartMode
<function ChangeStartMode (StartMode) => (ReturnValue)>

ChangeStartMode needs an argument!

What im i doing wrong here?

Cheers



From steve at holdenweb.com  Mon Sep 11 15:18:13 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 20:18:13 +0100
Subject: pyserial problem: script stops reading
In-Reply-To: <5a8943c0609111108j5a364269o38e369eefff826f0@mail.gmail.com>
References: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>	<5a8943c0609081825r203d08b5xa4a6225f2d56c337@mail.gmail.com>	<020101c6d3eb$da564520$03000080@hendrik>	<5a8943c0609091004l318c61d6m2d69fcedcd8380ff@mail.gmail.com>
	<5a8943c0609111108j5a364269o38e369eefff826f0@mail.gmail.com>
Message-ID: <ee4coc$9k$1@sea.gmane.org>

Frederic Wenzel wrote:
> On 9/9/06, Frederic Wenzel <freeed at gmail.com> wrote:
> 
>>On 9/9/06, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
>>
>>>| I wrote a script on Linux that uses pyserial to read status messages
>>>| from a serial line using readlines(). For now, it just displays what
>>>| it gets on stdout:
>>>| (...)
>>>| ser = serial.Serial(port=1,
>>>|                                  baudrate=1200,
>>>|                                  rtscts=1,
>>>|
>>>| If the script does not time out there, I am not sure what else it is
>>>| doing. It seems to be in a wait state it does not get out of.
> 
> 
> When it stopped working again (unfortunately) I pressed ctrl c and got
> the following output?
> 
> 14:53 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --752
> 14:53 | 0005 | 02 |   | 2  |Rack Abs.|  -  | 00752
> 14:53 | 0008 | 02 |Traceback (most recent call last):
>   File "serialhandler.py", line 34, in ?
>     lines = sh.readLines()
>   File "serialhandler.py", line 29, in readLines
>     return self.ser.readlines()
>   File "/usr/lib/python2.3/site-packages/serial/serialutil.py", line
> 78, in readlines
>     line = self.readline(eol=eol)
>   File "/usr/lib/python2.3/site-packages/serial/serialutil.py", line
> 60, in readline
>     c = self.read(1)
>   File "/usr/lib/python2.3/site-packages/serial/serialposix.py", line
> 269, in read
>     ready,_,_ = select.select([self.fd],[],[], self._timeout)
> KeyboardInterrupt
> 
> 
> Apparently this is the place where it gets stuck. The select.select
> line does not return, not even for a timeout.
> 
> Fred
Try running your program with

     python -i [programname.py]

That way after you ^C it you'll be able to poke around a bit in an 
interactive shell (though I suspect that the stackframe contents will 
have been lost, so you'll only have globals to look at - that may or may 
not be enough).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From g.brandl-nospam at gmx.net  Thu Sep 28 04:26:48 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Thu, 28 Sep 2006 10:26:48 +0200
Subject: Top and Bottom Values [PEP: 326]
In-Reply-To: <slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<1159370280.794129.104190@i3g2000cwc.googlegroups.com>
	<slrnehmsn6.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <efg109$4vr$1@news.albasani.net>

Antoon Pardon wrote:
> On 2006-09-27, George Sakkis <george.sakkis at gmail.com> wrote:
>> Antoon Pardon wrote:
>>
>>> What bothers me a bit about the rejection of PEP 326 is that one of the
>>> reasons stated is:
>>>
>>>   http://mail.python.org/pipermail/python-dev/2004-January/042306.html
>>>
>>>   - it is easily implemented when you really need it
>>>
>>> Well I thought it would simplify some things for me, so I tried an
>>> implementation and then found that some of the things that I would
>>> want to do with it wont work. So the "is easily implemented" bit
>>> seems not to be correct.
>>
>> IIRC, the PEP proposed the Smallest and Largest singletons with the
>> sole purpose of being used in comparisons. No numeric behavior was
>> implied, i.e. Smallest and Largest are not negative and positive
>> infinity in the math sense of the word.
> 
> That is true.
> 
>> So I guess the "easily implemented" refers to this case alone.
> 
> This doesn't follow. Take the example were I got stuck.
> 
>>>> lst = range(10)
>>>> lst[:Top]

FWIW, this works with 2.5 and the __index__ slot:

 >>> class Top(object):
...  def __index__(self):
...   return sys.maxint
...
 >>> a=range(5)
 >>> a[:Top()]
[0, 1, 2, 3, 4]
 >>>

Georg


From slinkp at gmail.com  Fri Sep  1 16:22:27 2006
From: slinkp at gmail.com (slinkp)
Date: 1 Sep 2006 13:22:27 -0700
Subject: $HOSTNAME not in os.environ?
In-Reply-To: <12fh147ljho9kba@corp.supernews.com>
References: <1157136817.528348.107350@h48g2000cwc.googlegroups.com>
	<12fh147ljho9kba@corp.supernews.com>
Message-ID: <1157142147.064224.275200@m73g2000cwd.googlegroups.com>

Grant Edwards wrote:
> On 2006-09-01, slinkp at gmail.com <slinkp at gmail.com> wrote:
> > Can anybody explain this one?
>
> >>>> print os.getenv('HOSTNAME')
> > None
> >>>>
> > pw at kermit ~ $ echo $HOSTNAME
> > kermit
>
> Perhaps the HOSTNAME variable isn't exported?

Aha. Right you are.  Thanks!

- PW



From bmearns at coe.neu.edu  Thu Sep 14 11:55:16 2006
From: bmearns at coe.neu.edu (bmearns)
Date: 14 Sep 2006 08:55:16 -0700
Subject: Outbound port on sockets
In-Reply-To: <4mtbjsF7kpeuU1@uni-berlin.de>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>
	<1158239526.673977.312840@p79g2000cwp.googlegroups.com>
	<mailman.90.1158240404.10491.python-list@python.org>
	<1158241354.764008.214710@m73g2000cwd.googlegroups.com>
	<4mtbjsF7kpeuU1@uni-berlin.de>
Message-ID: <1158249316.326019.119130@m73g2000cwd.googlegroups.com>

> But you can restrict the numbers of ports the server will use to a
> certain range! It's common for ftp to allow only for so many connections
> at the same time, so reserve a port-range of 20 or so for your server
> and configure the router to forward them.

Thanks, I think that'll have to be my work around till I can find more
information about this. I do still consider it a work around, though,
I'd like to be able to use both PORT and PASV and I'm entirely
convinced it's possible.

All the same, it's a good suggestion. Thank you. Now do you know how I
(as the server) can force clients to use PASV, instead of PORT?

-Brian



From deets at nospam.web.de  Thu Sep  7 14:14:05 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Thu, 07 Sep 2006 20:14:05 +0200
Subject: Using Beautiful Soup to entangle bookmarks.html
In-Reply-To: <1157651365.203283.76260@p79g2000cwp.googlegroups.com>
References: <1157644134.134745.282490@e3g2000cwe.googlegroups.com>
	<4matfsF5babeU1@uni-berlin.de>
	<1157651365.203283.76260@p79g2000cwp.googlegroups.com>
Message-ID: <4mb5roF5cta3U1@uni-berlin.de>

waylan schrieb:
> Diez B. Roggisch wrote:
>> suppose it is well-formed, most probably even xml.
> 
> Maybe not. Otherwise, why would there be a script like this one[1]?
> Anyway, I found that and other scripts that work with firefox
> bookmarks.html files with a quick search [2]. Perhaps you will find
> something there that is helpful.

I have to admit: I didn't check on that file, and simply couldn't 
believe it was so badly written as it apparently is.

But I was at least capable of shoving it through HTMLParser. But I'm not 
sure if that is of any use.

Excuse me causing confusion.

Diez


From MonkeeSage at gmail.com  Tue Sep 12 02:18:46 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 11 Sep 2006 23:18:46 -0700
Subject: How to get the "longest possible" match with Python's RE module?
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
	<1158041088.573901.167660@b28g2000cwb.googlegroups.com>
Message-ID: <1158041926.310829.16080@i42g2000cwa.googlegroups.com>

Or mabye something like this is better:

def matcher(string, pattern):
  out = ''
  for match in re.findall(r'\S*%s\S*' % pattern, string):
    if (len(match) >= len(out)):
      out = match
  return out

p1 = 'dodad donkeykong dolittle dodaday'
p2 = 'oneself self-serving selfsufficient oneselfsufficient'
print matcher(p1, 'do')
# donkeykong
print matcher(p2, 'self')
# oneselfsufficient



From bdesth.quelquechose at free.quelquepart.fr  Fri Sep 15 18:25:23 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 16 Sep 2006 00:25:23 +0200
Subject: add without carry
In-Reply-To: <slrnegl4na.qdk.jon+usenet@snowy.squish.net>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<450a7dec$0$14661$626a54ce@news.free.fr>
	<slrnegl4na.qdk.jon+usenet@snowy.squish.net>
Message-ID: <450b250a$0$28584$636a55ce@news.free.fr>

Jon Ribbens a ?crit :
> In article <450a7dec$0$14661$626a54ce at news.free.fr>, Bruno Desthuilliers wrote:
> 
>>Hugh wrote:
>>
>>>Sorry, here's an example...
>>>
>>>5+7=12
>>>
>>>added without carrying, 5+7=2
>>>
>>>i.e the result is always less than 10
>>
>>>I've been thinking some more about this and my brain is starting to
>>>work something out... 
>>
>>No need to think too long to come up with the most possibly Q&D solution:
>>
>>res = int(str(5 + 7)[-1])
> 
> 
> Am I missing something subtle in the question or is there some reason
> that nobody has posted the correct solution:
> 
>   (a + b) % 10

I'm afraid Peter Otten did a couple hours before you. But please note 
that my solution *is* actually 100% correct (base 10 assumed). It may be 
totally inefficiant, but that's another problem !-)


From fredrik at pythonware.com  Tue Sep 26 05:50:00 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 11:50:00 +0200
Subject: QuoteSQL
In-Reply-To: <slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8cdq$fui$2@lust.ihug.co.nz>	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <efat48$s64$1@sea.gmane.org>

Sybren Stuvel wrote:

> I'm suggesting functions based on the role of the string they need to
> escape, not the characters in that string.
> 
>     1) Quoting of wildcard strings for a query using LIKE etc.
>     2) Quoting of values for putting into queries.

it's actually quite amusing that some people have such a hard time 
developing a conceptual model that actually matches the underlying 
architecture and the information model.  and it's usually the same 
people that end up arguing for hypergeneralization.

it's about data, folks, not syntax artifacts.

</F>



From fredrik at pythonware.com  Tue Sep 12 09:02:10 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 15:02:10 +0200
Subject: variable update
In-Reply-To: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>
References: <f4cc03640609120526s4e1bfa55of636feb53e8ec3b5@mail.gmail.com>
Message-ID: <ee6b4h$mor$2@sea.gmane.org>

km wrote:

> Is there any handy untility for checking if  a variable is populated at 
> runtime ?

access it, and catch the NameError:

    try:
        variable
    except NameError:
        print "not defined"
    else:
        print "defined"

leaving variables undefined is usually bad style, though; if you can, 
assign some value to it, and test for that value instead:

    variable = None

    ... lots of code that may assign to variable ...

    if variable is not None:
        print "not defined"

</F>



From rdrink at gmail.com  Fri Sep  1 21:08:57 2006
From: rdrink at gmail.com (rdrink)
Date: 1 Sep 2006 18:08:57 -0700
Subject: pysqlite - simple problem
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
	<1157096859.197049.120950@i42g2000cwa.googlegroups.com>
	<Za_Jg.1457$v%4.69@newsread1.news.pas.earthlink.net>
Message-ID: <1157159337.388268.306790@m73g2000cwd.googlegroups.com>

Thanks everyone!
But... RTFM? Ouch. It's not like I don't know what I'm doing :-(

... rather, that I *am* using the older sqlite module
>     print sqlite.paramstyle = pyformat
>     print sqlite.version = 1.0.1
.... which does not support the qmark sytax. (and I fell victim of
someone elses tutorial).

And yes I should prolly move to pysqlite2, but for now I was able to
fix it this way...
num = 200
mess = "INSERT INTO foo (id) VALUES (%s)" % num
cur.execute(mess)

... don't know why I didn't think of that last (oh wait, Yes I do...
because 'last night' was actually 2am this morning, after working all
day!)

But thanks again to all of you for your help.



From outstretchedarm at hotmail.com  Thu Sep  7 12:11:01 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 09:11:01 -0700
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <1157644621.982238.11580@e3g2000cwe.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
	<1157642876.793030.134030@p79g2000cwp.googlegroups.com>
	<45003CCC.4050804@websafe.com>
	<1157644621.982238.11580@e3g2000cwe.googlegroups.com>
Message-ID: <1157645461.166427.263150@m73g2000cwd.googlegroups.com>

okay...

I got to work using the SCITE editor with

print "hello world" 		# here we are once again
raw_input("press return") 

cool!



From skip at pobox.com  Wed Sep 27 16:13:14 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 27 Sep 2006 15:13:14 -0500
Subject: OT: productivity and long computing delays
In-Reply-To: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
Message-ID: <17690.56154.131069.243457@montanaro.dyndns.org>


    Paul> Anyway, I did the same build on a 2 ghz Athlon 64 and was
    Paul> surprised that the speedup was only 35% or so.  I'd have to get a
    Paul> multiprocessor box to obtain really substantial gains.

Maybe your build process is i/o bound.  If you're using GNU make and have
the make dependencies set up properly, the -jN flag (for N = 2 or 3) may
speed things up.

Skip


From onurb at xiludom.gro  Mon Sep 25 04:13:02 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 25 Sep 2006 10:13:02 +0200
Subject: Looking for opinions
In-Reply-To: <1159055301.440027.275620@b28g2000cwb.googlegroups.com>
References: <1158957281.793034.191730@m7g2000cwm.googlegroups.com>
	<45159ef7$0$22860$626a54ce@news.free.fr>
	<1159055301.440027.275620@b28g2000cwb.googlegroups.com>
Message-ID: <45178f90$0$2085$626a54ce@news.free.fr>

crystalattice wrote:
> Bruno Desthuilliers wrote:
>> I have few experience with RPG softwares, but if your "domain" logic si
>> anything more than trivially complex, it's always better to keep it as
>> decoupled as possible from the user interface (unless of course the user
>> interface actually is the domain !-). FWIW, this doesn't prevent you
>> from using a web framework as the front-end...
> 
> Sorry, but what exactly do you mean by "domain"? 

Sorry, OOA/D jargon. The "domain" (implied : the "problem domain") is
really the core of the application - here all the objects / classes /
functions / whatever that constitute your game system. IOW, it's the
Model part of the MVC triad.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From MonkeeSage at gmail.com  Tue Sep 26 23:39:09 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 26 Sep 2006 20:39:09 -0700
Subject: Survival of the fittest
References: <4519bcf6$0$8000$c83e3ef6@nn1-read.tele2.net>
	<pan.2006.09.27.03.06.55.347276@comcast.net>
Message-ID: <1159328349.024848.32580@h48g2000cwc.googlegroups.com>

James Stroud wrote:
> Out of curiosity, what are these features that ruby has that python
> lacks. I've always wondered whether I should look at ruby--whether, as a
> language, it has anything to teach me that say python, C, and Java don't
> (LISP/Scheme is on my short-list to learn.)

Just a guess, myself not being the OP; but I would imagine that true
blocks / continuation passing and overriding / extending built-in
classes would rank high on the list. You can do the same things in
python (by using a different implementation), but it's not always as
clear or easy (e.g., coroutines in ruby as alot clearer using a callcc
approach than python's generator approach, imo at least -- but that's
also highly subjective).

Ps. I agree with the OP on the point I like python alot. :)

Regards,
Jordan



From roy at panix.com  Wed Sep 27 09:17:28 2006
From: roy at panix.com (Roy Smith)
Date: Wed, 27 Sep 2006 09:17:28 -0400
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159271339.775493.132180@i3g2000cwc.googlegroups.com>
	<mailman.669.1159272062.10491.python-list@python.org>
	<pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>
Message-ID: <roy-E62177.09172727092006@reader2.panix.com>

In article 
<pan.2006.09.27.13.11.34.185704 at REMOVE.THIS.cybersource.com.au>,
 Steven D'Aprano <steve at REMOVE.THIS.cybersource.com.au> wrote:

> On Tue, 26 Sep 2006 22:00:55 +1000, Anthony Baxter wrote:
> 
> > This seems to be a very, very silly original post. I know of plenty of
> > people who make a living programming Python. It's been the vast
> > majority of the programming (for money) I've done in the last ten
> > years, and there's countless other people I know here in Melbourne in
> > the same position.
> 
> Countless people? Are we talking aleph-zero people (countable infinity) or
> one of the uncountable infinities?

Countless and uncountable are not the same thing.  The former simply means 
you haven't bothered to count them yet, which as a basis for number theory, 
sounds like it belongs in a Douglas Adams book.


From stefan.behnel-n05pAM at web.de  Sat Sep 16 12:33:32 2006
From: stefan.behnel-n05pAM at web.de (Stefan Behnel)
Date: Sat, 16 Sep 2006 18:33:32 +0200
Subject: high level, fast XML package for Python?
In-Reply-To: <1158336232.952571.57310@p79g2000cwp.googlegroups.com>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<1158336232.952571.57310@p79g2000cwp.googlegroups.com>
Message-ID: <450c2766$0$5147$9b4e6d93@newsspool1.arcor-online.net>

Tim N. van der Leeuw wrote:
> Another option is Amara; also quite high-level and also allows for
> incremental parsing. I would say Amara is somewhat higher level than
> ElementTree since it allows you to access your XML nodes as Python
> objects (with some extra attributes and some minor warts), as well as
> giving you XPath expressions on the object tree.

Then you should definitely give lxml.objectify a try. It combines the ET API
with the lxml set of features (XPath, RelaxNG, XSLT, ...) and hides the actual
XML behind a Python object interface. That gives you everything at the same time.

http://codespeak.net/lxml/objectify.html

It's part of the lxml distribution:
http://codespeak.net/lxml/

Stefan


From deets at nospam.web.de  Tue Sep 26 05:51:42 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 26 Sep 2006 11:51:42 +0200
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
	<pan.2006.09.26.04.45.52.690588@REMOVEME.cybersource.com.au>
	<4518f52f$0$19015$636a55ce@news.free.fr>
Message-ID: <4nsbheFbpmmjU1@uni-berlin.de>

> Besides, what is so special with electronic forms that we have to go
> through all kind of tricks to make sure the user doesn't make mistakes
> when regular paper forms just assume the user will be careful when he
> fills it? Must be some kind of IQ draining field emited by all the
> computers which only computer experts are immune to :D

The speciality comes from paper forms being read by humans - or at least
that used to be the case. And as we still are more clever than your average
OCR program (and even than the not-so-average ones), that leads to
comparably good results.

But a computer that is supposed to process an electronic form - you have to
make sure to apply proper bondage techniques to make the user obey to your
command....

Diez


From s99999999s2003 at yahoo.com  Tue Sep 26 06:16:25 2006
From: s99999999s2003 at yahoo.com (s99999999s2003 at yahoo.com)
Date: 26 Sep 2006 03:16:25 -0700
Subject: concat next line with previous
Message-ID: <1159265785.829893.47120@m73g2000cwd.googlegroups.com>

hi
what is the python way to concat 2 lines eg

line  1 with some text
line 2 with some text

i want to bring line 2 up , such that i get one whole string.

line  1 with some text line 2 with some text



From webraviteja at gmail.com  Wed Sep 20 02:21:42 2006
From: webraviteja at gmail.com (Ravi Teja)
Date: 19 Sep 2006 23:21:42 -0700
Subject: include statement
In-Reply-To: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
References: <1158732020.063982.243980@m73g2000cwd.googlegroups.com>
Message-ID: <1158733302.943224.44100@m73g2000cwd.googlegroups.com>

> is it possible in python to include another python source file into the
> current namespace, i.e.completely analogous to the #include statement
> in C.

By using a pre-processor, like C does.
http://www.freenet.org.nz/python/pyp/

If you are new to Python, keep in mind that this is for special cases
only. Since Python has a module system, there isn't a need for #include
as in C.



From tdelaney at avaya.com  Wed Sep 13 03:12:57 2006
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Wed, 13 Sep 2006 17:12:57 +1000
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
Message-ID: <2773CAC687FD5F4689F526998C7E4E5FF1E9B2@au3010avexu1.global.avaya.com>

Antoon Pardon wrote:

> This is just an idea of mine, nothing I expect python to adapt.
> But just suppose the language allowed for words in bold. A word
> in bold would be considered a reserved word, a word in non bold
> would be an identifier.

Exactly how am I supposed to use my text editor to make words bold? Is
every text editor supposed to understand a "python format" for code?

Besides, I don't like bold for keywords (or anything in code) - I like
my keywords blue (RGB 0, 0, 255). Of course, with a "python format", I
could make *my* keywords blue. But I can pretty much guarantee that my
preferred editor will not ever understand "python format".

Tim Delaney


From kondal04 at gmail.com  Wed Sep  6 14:00:29 2006
From: kondal04 at gmail.com (kondal)
Date: 6 Sep 2006 11:00:29 -0700
Subject: getting quick arp request
In-Reply-To: <1157548727.183764.310360@i3g2000cwc.googlegroups.com>
References: <1157544193.156257.168340@m73g2000cwd.googlegroups.com>
	<1157545228.519716.259040@i42g2000cwa.googlegroups.com>
	<1157548727.183764.310360@i3g2000cwc.googlegroups.com>
Message-ID: <1157565629.691753.115910@e3g2000cwe.googlegroups.com>


> Something is limiting the TCP/IP connections from my python program at
> 10 maximum at the same time.
> I do not see this limit in my code.
> I did not bumped over the 4226 error.
>
> => Where does this limit come from.
> => How can I overcome it.

You can just edit it by creating a new key in the registry.

HKEY_LOCAL_MACHINE - SYSTEM - CurrentControlSet - Services -Tcpip -
Parameters

Create a DWORD key named "TcpNumConnections" and set the value to
00fffffe or 16777214.

-kondal



From gagsl-py at yahoo.com.ar  Sat Sep 16 07:10:18 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 16 Sep 2006 08:10:18 -0300
Subject: strange result with json-server & zope
In-Reply-To: <1158402531.889644.151000@m7g2000cwm.googlegroups.com>
References: <1158402531.889644.151000@m7g2000cwm.googlegroups.com>
Message-ID: <7.0.1.0.0.20060916074836.040617f8@yahoo.com.ar>

At Saturday 16/9/2006 07:28, astarocean wrote:

>[the script]
>body_html = container.mime_mail(body_html=body_html)
>container.MailHost.send(messageText=body_html, mto=to_email,
>mfrom=from_email, subject=subject, encode=None)
>
>[mime_mail is a dtml-method]
><dtml-mime type="text/html" charset="utf8" encode="quoted-printable"
>disposition="inline">
><dtml-var body_html missing="this is the body of mail goes">
></dtml-mime>

"utf8" is not the right spelling, should be UTF-8

>[called from json-rpc]
>Content-Type: text/html;
>     charset="utf8"
>Content-Disposition: inline
>Content-Transfer-Encoding: quoted-printable
>
>< ! D O C T Y P E   H T M L   P U B L I C   " - / / W 3 C / / D T D   H
>T M=
>  L   4 . 0 1   T r a n s i t i o n a l / / E N "
>  " h t t p : / / w w w . w 3 . o r g / T R / h t m l 4 / l o o s e . d
>t d =
>" >

But this is not UTF-8; looks like UTF-16 with 0x00 converted to 0x20 
(space). I'd look at where the body comes from, or ask on the Zope 
list for the right way to use dtml-mime.

Anyway, why are you using dtml-mime and such? Using the email package 
is easier and a lot more powerful.


Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From tim.golden at viacom-outdoor.co.uk  Thu Sep  7 15:26:27 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: 7 Sep 2006 12:26:27 -0700
Subject: Printing Documents
In-Reply-To: <1157651301.622295.165810@d34g2000cwd.googlegroups.com>
References: <1157651301.622295.165810@d34g2000cwd.googlegroups.com>
Message-ID: <1157657187.217984.73510@h48g2000cwc.googlegroups.com>

defcon8 wrote:
> How can I print html documents in Python on Windows?

Hopefully this technique will work:

http://timgolden.me.uk/python/win32_how_do_i/print.html#shellexecute

TJG



From claudio.grondi at freenet.de  Thu Sep  7 14:37:59 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 20:37:59 +0200
Subject: Extracting text from a string
In-Reply-To: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
References: <1157653953.317820.283260@m79g2000cwm.googlegroups.com>
Message-ID: <edpou4$41s$1@newsreader2.netcologne.de>

Tempo wrote:
> Hello. I am having a little trouble extracting text from a string. The
> string that I am dealing with is pasted below, and I want to extract
> the prices that are contained in the string below. Thanks in advanced
> for any and all help. Thank you.
> 
> 
> 
> <span class="sale">
> 					$14.99
> 				</span>, <span class="sale">
> 					$27.99
> 				</span>, <span class="sale">
> 					$66.99
> 				</span>, <span class="sale">
> 					$129.99
> 				</span>, <span class="sale">
> 					$254.99
> 			</span>
> 
What have you tried?

Taking a look into regular expressions in the Python tutorial (4.2 re -- 
Regular expression operations) should give you all you need.

Claudio Grondi


From horpner at yahoo.com  Tue Sep  5 14:53:32 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 5 Sep 2006 20:53:32 +0200
Subject: Test for number?
References: <1157390891_40515@sp6iad.superfeed.net>
	<1157399309.305809.76610@74g2000cwt.googlegroups.com>
	<slrnefr2en.1nc.horpner@FIAD06.norwich.edu>
	<1157478212.182870.261900@m73g2000cwd.googlegroups.com>
Message-ID: <slrnefrhtv.co.horpner@FIAD06.norwich.edu>

On 2006-09-05, George Sakkis <george.sakkis at gmail.com> wrote:
> Neil Cerutti wrote:
>
>> On 2006-09-04, George Sakkis <george.sakkis at gmail.com> wrote:
>> > x=raw_input('\nType a number from 1 to 20')
>> > try:
>> >     x = int(x)
>> >     if x<1 or x>20: raise ValueError()
>> > except ValueError:
>> >     Do_B
>> > else:
>> >     Do_A
>> >
>> > If you want to distinguish between the two error cases (not a
>> > number vs number not in [1,20]), handle the second one as
>> > "Do_C" instead of raising ValueError.
>>
>> Is the original value of x available in Do_B and Do_A, or will
>> it have been clobbered before getting there?
>
> In Do_A, x will be an integer between 1 and 20. In Do_B, it
> depends; if the original input cannot be converted to an int,
> it will be preserved, otherwise x will be an integer (lower
> than 1 or larger than 20).

Thanks. I infer from this that in the case that int(x) raises
ValueError, that x is guaranteed to be unmodified.

-- 
Neil Cerutti
22 members were present at the church meeting held at the home
of Mrs. Marsha Crutchfield last evening. Mrs. Crutchfield and
Mrs. Rankin sang a duet, The Lord Knows Why. --Church Bulletin Blooper


From python.list at tim.thechases.com  Tue Sep 19 13:50:47 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 19 Sep 2006 12:50:47 -0500
Subject: Curious issue with simple code
In-Reply-To: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
Message-ID: <45102DF7.4080705@tim.thechases.com>

 > [code]
 > import os
 >
 > def print_tree(start_dir):
 >     for f in os.listdir(start_dir):
 >         fp = os.path.join(start_dir, f)
 >         print fp
 >         if os.path.isfile(fp): # will return false if use f here!
 >             if os.path.splitext(fp)[1] == '.html':
 >                 print 'html file found!'
 >         if os.path.isdir(fp):
 >             print_tree(fp)
 >
 > print os.path
 > print_tree(r'c:\intent\docn')
 > [/code]
 >
 > As above it all works as expected. However, on the marked
 > line, if I use f instead of fp then that condition returns
 > false! Surely, isfile(f) should return true, even if I
 > just give a filename, rather than the full path?
 >
 > If anyway can explain this I'd be grateful,

If your current working directory (CWD) is the same as
start_dir, the behaviors of using "f" and "fp" will be the
same.  However, if your CWD is *not* the same, "f" is
relative to the CWD, and fp is "start_dir + f" relative to
the CWD.

Thus,

 >>> start_dir = 'temp'
 >>> os.path.abspath(os.path.curdir)
'/home/tim'
 >>> f = 'filename'
 >>> fp = os.path.join(start_dir, f)
 >>> fp
'temp/filename'
 >>> os.path.abspath(f)
'/home/tim/filename'
 >>> os.path.abspath(fp)
'/home/tim/temp/filename'


You may also want to read up on os.walk:

for root, dirs, files in os.walk(start_dir):
     for f in files:
         if os.path.splitext(f)[1].lower()[1:] == 'html':
             print 'HTML:', os.path.join(root, f)
         #else:
             #print 'Not HTML:', os.path.join(root, f)

which allows you to easily do what it looks like your code
is doing.

-tkc







From skip at pobox.com  Wed Sep 27 06:40:45 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 27 Sep 2006 05:40:45 -0500
Subject: What's up with site.Quitter?
In-Reply-To: <efdcui$acr$1@news.albasani.net>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
	<efdcui$acr$1@news.albasani.net>
Message-ID: <17690.21805.732921.286406@montanaro.dyndns.org>


    Georg> Not really, but what would you do with it?  It's an internal
    Georg> object used for only exit() and quit(), and of no real use
    Georg> elsewhere.

In fact, I would argue that objects placed in builtins as a convenience in
inteactive mode shouldn't be colorized at all (dir, help, exit, quit,
copyright, credits, license, maybe vars).  They shouldn't be considered
special in code written to be used in non-interactive contexts.

Skip


From sybrenUSE at YOURthirdtower.com.imagination  Wed Sep  6 05:53:37 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Wed, 6 Sep 2006 11:53:37 +0200
Subject: OpenOffice.org and Python
References: <slrnefrv2p.9pc.sybrenUSE@schuimige.stuvel.eu>
	<mn.31bd7d694f278d16.46195@XX.XmclaveauX.com>
	<slrneft2is.cqd.sybrenUSE@schuimige.stuvel.eu>
	<1157534643.495840.112110@h48g2000cwc.googlegroups.com>
Message-ID: <slrneft6l1.duo.sybrenUSE@schuimige.stuvel.eu>

olive enlightened us with:
> you did not understand Michel question because Ubuntu seems to be
> the only distribution coming with OpenOffice and Python 2.4 compiled
> together.

Ah, okay. I have no other distributions here, so I rely on others to
give me more information about them.

> Others platform such as Windoze are limitated to Python 2.3 when
> working with OpenOffice and compiling is a pain especially under
> Windoze.

Poor people.

If there is anything in my code that doesn't work with Python 2.3, or
with your system in general, please let me know what code that is, and
how to fix it. I'll implement the changes into the article.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From st at tobiah.org  Thu Sep  7 16:07:20 2006
From: st at tobiah.org (tobiah)
Date: Thu, 07 Sep 2006 13:07:20 -0700
Subject: Positive lookahead assertion
Message-ID: <45006ede$0$19734$88260bb3@free.teranews.com>

(?=...)
Positive lookahead assertion. This succeeds if the contained 
regular expression, represented here by ..., successfully 
matches at the current location, and fails otherwise. 
But, once the contained expression has been tried, the 
matching engine doesn't advance at all; the rest of the 
pattern is tried right where the assertion started.

I am unable to wrap my mind around this sentence.  Could
someone give me an example of how this works, and why
it would be useful?

Thanks,

Toby

-- 
Posted via a free Usenet account from http://www.teranews.com



From pavlovevidence at gmail.com  Mon Sep 25 15:14:39 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 25 Sep 2006 12:14:39 -0700
Subject: Talking to marketing people about Python
In-Reply-To: <1159187290.052703.116370@i42g2000cwa.googlegroups.com>
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<1159187290.052703.116370@i42g2000cwa.googlegroups.com>
Message-ID: <1159211679.627442.111850@i42g2000cwa.googlegroups.com>

rdsteph at mac.com wrote:
> As a sometimes marketing droid on my day job (please don't tell
> anyone!) I think you should point out that, while 5-10 years ago Perl
> was more popular and widely used than Python, Python has been growing
> at a much higher rate, and by many (most?) measurements, Python is now
> more widely used than Perl for many types of applications.

Anecdotally, I've been surprised lately at the number of standalone
applications that show up on Debian-testing I've seen written in
Python.  (Used to be pretty much just sketch and Zope.)  Haven't seen
too much new stuff in Perl.  I could be biased.

Still don't know whether labeling something as written in Python is
intended to be a "badge of honor" or "advance warning".


Carl Banks



From fredrik at pythonware.com  Mon Sep 25 12:03:18 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 18:03:18 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfupe.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>	<mailman.579.1159199258.10491.python-list@python.org>
	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>
Message-ID: <ef8uk5$t6o$2@sea.gmane.org>

Jon Ribbens wrote:

> It's up to me to decide whether or not an argument is good enough to
> convince me, thank you very much.

not if you expect anyone to take anything you say seriously.

</F>



From aleax at mac.com  Sun Sep  3 21:08:10 2006
From: aleax at mac.com (Alex Martelli)
Date: Sun, 3 Sep 2006 18:08:10 -0700
Subject: Syntax suggestion.
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
	<slrnefhdtt.flm.sybrenUSE@schuimige.stuvel.eu>
	<1157316221.203928.26090@h48g2000cwc.googlegroups.com>
Message-ID: <1hl3e8m.1gt0sd580nscuN%aleax@mac.com>

samir <samirbenabid at linuxmail.org> wrote:

> > But how would you discern between a function reference and a function
> > call?
> 
> That would be a problem with two solutions:
> 1- If the function doesn't have any parameters, it will be called with
> the empty parentheses (just like usual!);
> 2- to indicate that this is a function call, we would be adding a $ at
> the end of the statement.

What a mess it would be to disambiguate statements such as

x = foo bar baz bat

is it x = (foo, bar, baz, bat)
or x = foo(bar, baz, bat)
or x = foo(bar(baz), bat)
or x = foo(bar, baz(bat))
or x = foo(bar(baz, bat))
or ... [even ignoring the possibility that one or more of these might be
functions callable without arguments...!!!]...

iPython has some heuristics that may be reasonable for the commandline
(and are, in any case, at least simple), but in practice I find that I
go back to using the good old interactive Python interpreter rather than
putting up with even those simple heuristics.


Alex


From casevh at comcast.net  Mon Sep 18 16:40:24 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 18 Sep 2006 13:40:24 -0700
Subject: newbie division question
In-Reply-To: <MPCPg.3327$W13.2538@trnddc05>
References: <YMBPg.3328$uj3.1736@trnddc08>
	<1158608090.645965.49970@m7g2000cwm.googlegroups.com>
	<MPCPg.3327$W13.2538@trnddc05>
Message-ID: <1158612024.373016.253610@k70g2000cwa.googlegroups.com>


> PS Any news on when true division will be the default?

Python 3.0 (aka P3K). It is the release that can break backwards
compatibility.

http://www.python.org/dev/peps/pep-3000/

casevh



From bj_666 at gmx.net  Fri Sep 15 02:39:50 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 15 Sep 2006 08:39:50 +0200
Subject: [ANN] XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
Message-ID: <pan.2006.09.15.06.39.49.446013@gmx.net>

In <20060914193558.2234.50297.XPN at orion.homeinvalid>, Nemesis wrote:

> Mentre io pensavo ad una intro simpatica "Franz Steinhaeusler"
> scriveva:
>
>> There is no progress bar or other info, if I subscribe one list.
>> There is a little in the lower left corner, but if a lot of headers
>> and bodies are received, the program seems to hang.
>> I actually killed it, because I thought that hanging.
> 
> XPN is monothreaded, so when it is downloading the headers (it is a
> monolotic job) the progress bar can't be updated.

Why?  I guess there's a loop involved.  Can't you update the GUI after
each message?

Ciao,
	Marc 'BlackJack' Rintsch


From jon+usenet at unequivocal.co.uk  Wed Sep 27 05:43:20 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 27 Sep 2006 09:43:20 GMT
Subject: Computer Language Popularity Trend
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159349867.827187.270390@h48g2000cwc.googlegroups.com>
Message-ID: <slrnehkht4.7kj.jon+usenet@snowy.squish.net>

In article <1159349867.827187.270390 at h48g2000cwc.googlegroups.com>, mark.hoemmen at gmail.com wrote:
>> http://xahlee.org/lang_traf/index.html
> 
> Careful there with the sweeping generalizations and quick judgments
> about languages :)

I just read "PHP as a language is rather dry and business-like",
and fell off my chair.


From steve at holdenweb.com  Mon Sep 11 17:56:31 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 22:56:31 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
Message-ID: <ee4m16$og$1@sea.gmane.org>

Mike Owens wrote:
> I coworker pointed me to this thread.
> 
> 
>>>>and why it isn't SQL.
> 
> 
>>>It isn't SQL simply because SQL won't let you insert text
>>>into a numeric field.
> 
> 
>>Yup, I have to agree that's pretty crappy. (Makes mental note to limit
>>use of SQLite).
> 
> 
> Ever heard of check constraints? That's another feature of this
> crappy, non-SQL database. They are one of at least three different
> approaches you can take to implement strict typing using SQLite's SQL
> and C library facilities.
> 
Oh, right. So you're trying to defend SQLite (which, by the way, doesn't 
need it: it's a perfectly fine tool for limited purposes) by suggesting 
that column typing's failure to work isn't a problem because you can 
declare column types in check constraints? That seems like a hard 
position to defend to me.

You might as well say it's OK to sell blunt knives because they can 
always be sharpened.

[examples snipped]
> 
> That darned dynamic typing. It works like almost any other database if
> you want it to. (Makes mental note to spend more time reading SQLite
> documentation before bashing SQLite.)

Sure. But if you go back to the start of the thread you'll remember the 
OP was originally complaining that SQLite was being promoted in the 
Python docs as SQL compliant. It clearly isn't if its response to the 
insertion of a data value that conflicts with the declared column type 
is to store a value whose type is something else. You shouldn't need to 
add check constraints to verify that the value stored in an integer 
column is actually an integer.

I don't think anyone is trying to suggest that SQLite isn't a prefectly 
good tool for many purposes: it's far more sophisticated than bsddb, for 
example, and I've used both it and Gadfly (which has similar 
deficiencies when compared to strict standards) with complete satisfaction.

So climb down off that high horse :-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From george.sakkis at gmail.com  Fri Sep  1 20:20:53 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 1 Sep 2006 17:20:53 -0700
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<mailman.10264.1157134224.27775.python-list@python.org>
	<1157135184.608704.277720@h48g2000cwc.googlegroups.com>
	<slrnefh3nm.1eo.horpner@FIAD06.norwich.edu>
	<1157149768.698178.95060@b28g2000cwb.googlegroups.com>
Message-ID: <1157156453.422649.308950@74g2000cwt.googlegroups.com>

jwaixs wrote:

> Thank you for all your reply and support. Neil's fits the most to me. I
> shrinked it to this function:
>
> def flatten(x):
>     for i in range(len(x)):
>         if isinstance(x[i], list):
>             x[i:i+1] = x[i]
>
> Thank you all again. If someone could find even a cuter way, I'd like
> to see that way.
>
> Noud Aldenhoven

The recursive generator implementation seems cuter (and I guess more
efficient) to me; YMMV:

def flatten(x):
    if not isinstance(x,list):
        yield x
    else:
        for elem in x:
            for subelem in flatten(elem):
                yield subelem


Or if you want to modify the argument list in place, as in Neil's
solution:

def flatten_in_place(x):
    x[:] = flatten(x)


George



From steven.bethard at gmail.com  Sun Sep 17 19:15:32 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 17 Sep 2006 17:15:32 -0600
Subject: high level, fast XML package for Python?
In-Reply-To: <450CF5CF.3090109@v.loewis.de>
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
	<450CF5CF.3090109@v.loewis.de>
Message-ID: <QuGdnTl5WrOSSpDYnZ2dnUVZ_qudnZ2d@comcast.com>

Martin v. L?wis wrote:
> Gleb Rybkin schrieb:
>> I searched online, but couldn't really find a standard package for
>> working with Python and XML -- everybody seems to suggest different
>> ones.
>>
>> Is there a standard xml package for Python? Preferably high-level, fast
>> and that can parse in-file, not in-memory since I  have to deal with
>> potentially MBs of data. 
> 
> It seems that everybody is proposing libraries that use in-memory
> representations. There is a standard xml package for Python, it's
> called "xml" (and comes with the standard library). It contains a
> SAX interface, xml.sax, which can parse files incrementally.

To use ElementTree and keep your memory consumption down, consider using 
the iterparse function:

     http://effbot.org/zone/element-iterparse.htm

Then you can get more SAX-like memory consumption while still enjoying 
the high-level interface of ElementTree.

STeVe


From sybrenUSE at YOURthirdtower.com.imagination  Sat Sep 30 05:33:15 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sat, 30 Sep 2006 11:33:15 +0200
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu>
Message-ID: <slrnehseer.o25.sybrenUSE@schuimige.stuvel.eu>

Antoine De Groote enlightened us with:
> Can anybody tell me the reason(s) why regular expressions are not built 
> into Python like it is the case with Ruby and I believe Perl?

They _are_ built into Python. Python ships with the 're' module.

> Python Culture says: 'Explicit is better than implicit'. May it be
> related to this?

The creators of Python chose not to include an extention of the Python
syntax for regular expressions. It's a lot simpler to have a
straight-forward syntax, and simply pass the regular expressions to
the appropriate functions.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From fredrik at pythonware.com  Mon Sep 25 13:59:58 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 19:59:58 +0200
Subject: How to save High Quality JPG image by setting Image module from
	PIL
In-Reply-To: <1159205996.143731.243780@e3g2000cwe.googlegroups.com>
References: <1159205996.143731.243780@e3g2000cwe.googlegroups.com>
Message-ID: <ef95f0$odg$1@sea.gmane.org>

Daniel Mark wrote:

> I am using Image module from PIL to save created image as JPG format.
> 
> Is there any option I could set for function Image.save so that the
> stored image will have the highest quality.

something like

     im.save(filename, quality=90)

should do the trick.

if you want to play with the quality setting, reading the "jpeg quality 
100 is overkill" part of this post:

     http://article.gmane.org/gmane.comp.python.image/115/match=overkill

might also be a good idea.

</F>



From sumesh.chopra at gmail.com  Wed Sep 20 12:54:21 2006
From: sumesh.chopra at gmail.com (unexpected)
Date: 20 Sep 2006 09:54:21 -0700
Subject: Python regular expression question!
Message-ID: <1158771260.946086.312390@b28g2000cwb.googlegroups.com>

I'm trying to do a whole word pattern match for the term 'MULTX-'

Currently, my regular expression syntax is:

re.search(('^')+(keyword+'\\b')

where keyword comes from a list of terms. ('MULTX-' is in this list,
and hence a keyword).

My regular expression works for a variety of different keywords except
for 'MULTX-'. It does work for MULTX, however, so I'm thinking that the
'-' sign is delimited as a word boundary. Is there any way to get
Python to override this word boundary?

I've tried using raw strings, but the syntax is painful. My attempts
were:

re.search(('^')+("r"+keyword+'\b')
re.search(('^')+("r'"+keyword+'\b')

and then tried the even simpler:

re.search(('^')+("r'"+keyword)
re.search(('^')+("r''"+keyword)


and all of those failed for everything. Any suggestions?



From robert.kern at gmail.com  Sat Sep 23 21:18:24 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sat, 23 Sep 2006 20:18:24 -0500
Subject: Extended slices and indices
In-Reply-To: <1159058171.518504.180420@e3g2000cwe.googlegroups.com>
References: <1159058171.518504.180420@e3g2000cwe.googlegroups.com>
Message-ID: <ef4mcs$scj$1@sea.gmane.org>

GavinCrooks at gmail.com wrote:
> The indices method of slice doesn't seem to work quite how I would
> expect when reversing a sequence.
> 
> For example :
>>>> s = '01234'
>>>> s[::-1]
> '43210'
>>>> s[slice(None,None,-1) ]
> '43210'
> 
> So a slice with a negative step (and nothing else) reverses the
> sequence. But what are the
> corresponding indices?
>>>> slice(None,None,-1).indices(len(s))
> (4, -1, -1)
> 
> That looks O.K. The start is the last item in the sequence, and the
> stop is one before the beginning of the sequence. But these indices
> don't reverse the string:
>>>> s[4:-1:-1]
> ''
> 
> Although they give the correct range:
>>>> range( 4, -1,-1)
> [4, 3, 2, 1, 0]
> 
> It would appear that there is no set of indices that will both reverse
> the string and produce the correct range!
> 
> Is this a bug or a feature?

I'd say bug in the .indices() method. The meaning of [4:-1:-1] is unavoidable 
different than [::-1] since the index -1 points to the last element, not the 
imaginary element before the first element. Unfortunately, there *is* no 
concrete (start, stop, step) tuple that will emulate [::-1].

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From andrew-news at andros.org.uk  Tue Sep 26 15:14:17 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Tue, 26 Sep 2006 20:14:17 +0100
Subject: Unexpected behaviour of csv module
In-Reply-To: <1159174838.874515.222640@i42g2000cwa.googlegroups.com>
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
	<1159148247.308716.234600@i42g2000cwa.googlegroups.com>
	<ef8208$q37$1$8300dec7@news.demon.co.uk>
	<1159174838.874515.222640@i42g2000cwa.googlegroups.com>
Message-ID: <45197C09.2040302@andros.org.uk>

John Machin wrote:
> You can fix that. The beauty of open source is that you can grab it
> (Windows: c:\python2?\lib\csv.py (typically)) and hack it about till it
> suits your needs. Go fer it!

Unfortunately the bits I should change are in _csv.c and, as I'm not 
very proficient at C, that wouldn't be a good idea. Anyway, for the 
specific brokenness of my CSV file, the simple workaround from my 
original post is fine.


From metaperl at gmail.com  Tue Sep 12 19:38:26 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 16:38:26 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <1158073855.390554.75750@e3g2000cwe.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
Message-ID: <1158104306.330476.269960@m73g2000cwd.googlegroups.com>


Istvan Albert wrote:
> metaperl wrote:
> > -->  python -i
> > >>> class = "algebra"
> >   File "<stdin>", line 1
> >     class = "algebra"
> >           ^
> > SyntaxError: invalid syntax
>
> Designing a syntax to avoid all possible newbie errors is impractical
> because as soon as you are finished with one iteration the new newbies
> will start making different kinds of errors...
>
> Take solace in the fact that you've been immediately notifed of the
> error while its fix: renaming pass to passwd is trivial ...

The error message is not very explicit - "class is a reserved word"
will make far more sense to a new programmer than SyntaxError.
Especially since the expression is rather innocent looking and
correct-looking.



From Maria.Reinhammar at accalon.com  Tue Sep 26 05:03:34 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 26 Sep 2006 02:03:34 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <1159261414.857381.115010@k70g2000cwa.googlegroups.com>


  walterbyrd wrote:
  > If so, I doubt there are many.

My share of the waterfall :o)

I do earn my (preposterously nice *wink*) salary from doing *all* major
efforts, at the company I work for, in Python.
Not only that, since I started out here some 5 years ago, nearly all
software development of new thingys have moved to.. right! Python! That
adds three more people.
(We do use some Java for PDA's and also C++, the last just for
maintenance of older SW)
And even more, some of our PLC programmers use Python to auto-render
PLC code for Siemens(!), significantly increasing their productivity in
each and every project.

So I guess you just have to listen in on the right frequencies *wink
again*

//M



From gardner at networknow.org  Thu Sep  7 19:29:54 2006
From: gardner at networknow.org (Gardner Pomper)
Date: Thu, 7 Sep 2006 19:29:54 -0400
Subject: Specifying a custom formatter in logging config file
Message-ID: <42d22dbf0609071629y5ea7581djc57e23c9babf2b90@mail.gmail.com>

I have been wanting to have my logging messages indented based on the level
in the call stack. I found a recipe online for defining such a
formatter (Stack-based
indentation of formatted
logging<http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/412603>)
but I can't figure out how to specify that formatter in the file that I read
using logging.fileConfig. Can someone point me to an example of how to do
this?

Thanks!

- Gardner
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From steve at holdenweb.com  Thu Sep  7 04:50:23 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 09:50:23 +0100
Subject: sending emails using python
In-Reply-To: <slrnefvi38.n6g.sybrenUSE@schuimige.stuvel.eu>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<slrnefvi38.n6g.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <edomfa$s0a$1@sea.gmane.org>

Sybren Stuvel wrote:
> sridhar enlightened us with:
> 
>>iam having user account on an exchangeserver.
>>with that can i send an email using python?
>>
>>if iam using the following code iam getting error
>>
>>
>>fromAddress = 'sridhar_kasturi at satyam.com'
>>toAddress = 'sridhar_kasturi at satyam.com'
>>msg = "Subject: Hello\n\nThis is the body of the message."
> 
>                        ^^^^
> 
> You need \r\n\r\n there. Line-ends in email messages should be DOS
> line-ends.
> 
This is untrue for the Python smtplib, though correct according to the 
RFCs. The SMTP.data() method uses a locally-declared function called 
quotedata() to ensure the correct line endings, so using "\n" will 
result in the same message as using "\r\n".
> 
>>Traceback (most recent call last):
>>  File
>>"C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout\InitialMailExample.py",
>>line 5, in ?
>>    server = smtplib.SMTP("hstmsg002",25)
>>  File "C:\Python24\lib\smtplib.py", line 244, in __init__
>>    (code, msg) = self.connect(host, port)
>>  File "C:\Python24\lib\smtplib.py", line 307, in connect
>>    (code, msg) = self.getreply()
>>  File "C:\Python24\lib\smtplib.py", line 351, in getreply
>>    raise SMTPServerDisconnected("Connection unexpectedly closed")
>>SMTPServerDisconnected: Connection unexpectedly closed
> 
> 
> Well that's useless. You could install a network sniffer
> (http://www.ethereal.com/) and find out what's actually sent over the
> network connection, and where things go wrong.
> 
Useless it might be, but it's a lot more clueful than some questions we 
see, so it seems a little dismissive just to say "it's useless" - the OP 
has provided the traceback, which is so often missing in questions from 
newbies, and has correctly localized the error to a small chunk of code.

True, the error message isn't particularly helpful in these 
circumstances, but it probably represents an accurate description (from 
the client's point of view) about what's happening, in which case an 
Ethereal trace will provide little more data than the traceback. I 
suppose it'll tell you whether the server is sending RST or FIN to 
terminate the connection, but it won't give much insight into why.

We might hazard a guess that the connection is being closed because 
there is no SMTP server running on the named host, or (less likely) it 
requires authentication. Unfortunately when I try to connect to a 
non-existent SMTP server on an existent host I see

socket.error: (113, 'Software caused connection abort')

under both 2.4.3 and 2.5b2. Alas I don't have ready access to a server 
that requires authentication (my servers authenticate senders by POP 
access IIRC). So I can't reproduce this error.

Perhaps the SMTP server is strapped down to accepting connections from 
specific IP addresses by some firewall? It would probably be a good idea 
to have a chat with the server's administrator to see if they can 
suggest what might be going wrong.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From wildemar at freakmail.de  Sun Sep 24 13:40:31 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Sun, 24 Sep 2006 19:40:31 +0200
Subject: How to close the DOS Shell when starting a python script
In-Reply-To: <1158987807.349057.217150@e3g2000cwe.googlegroups.com>
References: <1158986228.279870.131610@i3g2000cwc.googlegroups.com>
	<1158987807.349057.217150@e3g2000cwe.googlegroups.com>
Message-ID: <4516C30F.7090807@freakmail.de>

Paddy wrote:
> Rename the .py file with extension .pyw.
> - Paddy.
> 
To elaborate: This works because, by default, .py files are associated 
with python.exe and .pyw files are associated with pythonw.exe, the 
latter not opening a console window.
You can actually run a .py file with pythonw.exe without opening a console.

wildemar


From steve at holdenweb.com  Fri Sep 29 03:24:32 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 29 Sep 2006 08:24:32 +0100
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <1159511802.337981.216840@e3g2000cwe.googlegroups.com>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>	<efhril$nrm$1@lust.ihug.co.nz>	<mailman.916.1159498252.10491.python-list@python.org>	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>	<mailman.918.1159509387.10491.python-list@python.org>	<1159510625.265885.226700@i3g2000cwc.googlegroups.com>
	<1159511802.337981.216840@e3g2000cwe.googlegroups.com>
Message-ID: <efihm1$jqi$1@sea.gmane.org>

MonkeeSage wrote:
> Steve Holden wrote:
> 
>>  >>> to_bin(0)
>>''
> 
> 
> Doh! Oh, yeah...that! ;)
> 
> OK...
> 
> def to_bin(x):
>   out=[]
>   while x > 0:
>     out.insert(0, str(x % 2))
>     x /= 2
>   else:
>     out.append(str(x))
>   return ''.join(out)
> 
It's an often-missed and almost invariably untested corner case that 
one's first attempt to solve the problem usually rids one of. I have 
written binary format code about thirteen times in a lifetime of 
programming so it was easy for me to spot. You'll never make *that* 
mistake again ;-)

Unfortunately forty years of programming experience has taught me that 
there's an essentially infinite supply of mistakes to make ... your 
mistakes just get smarter most of the time.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bj_666 at gmx.net  Wed Sep 27 09:59:05 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 27 Sep 2006 15:59:05 +0200
Subject: How to change menu text with Tkinter?
References: <1159363771.905537.224780@d34g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.27.13.59.04.563522@gmx.net>

In <1159363771.905537.224780 at d34g2000cwd.googlegroups.com>, Phil Schmidt
wrote:

> I am making a little Tkinter GUI app that needs to be in several
> languages (english, french, etc.), adjustable at runtime via a menu
> pick to select the language. The only way I can see to change text in
> the menus entries is to destroy them and recreate them usiing different
> labels. This seems very clunky though, and there must be a better way.
> Can anyone offer any pointers or a short example for how to do this?

Do you really need this at runtime or is it enough to store the language
in a config file and ask the user to restart the application?  Then using
the `gettext` module is a good way.  Maybe in combination with the
`locale` module so you can use the language of the operating system as
default if the user doesn't choose one explicitly.

Ciao,
	Marc 'BlackJack' Rintsch


From steve at REMOVEME.cybersource.com.au  Thu Sep 14 05:41:15 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Thu, 14 Sep 2006 19:41:15 +1000
Subject: Are Python's reserved words reserved in places they dont need
	tobe?
References: <mailman.5.1158131583.10491.python-list@python.org>
	<slrnegfdnt.f0c.apardon@rcpc42.vub.ac.be>
Message-ID: <pan.2006.09.14.09.41.14.876360@REMOVEME.cybersource.com.au>

On Wed, 13 Sep 2006 07:45:02 +0000, Antoon Pardon wrote:

>>> This is just an idea of mine, nothing I expect python to adapt.
>>> But just suppose the language allowed for words in bold. A word
>>> in bold would be considered a reserved word, a word in non bold
>>> would be an identifier.

[snip]

> <Shrug>, Different options are possible, in a file the keywords
> could just be prefixed with a Ctrl-K, and depending on the editor or its
> setting, this could be shown bold or blue or whatever. I don't care
> about the specifics at this point. I just wanted to make clear there
> is the option to make/show the distiction between identifiers and keywords
> more explicitly.

But surely all you are doing is changing the reserved word from (say)
"return" to "\x0breturn". Once you do that, you can bet that people will
complain that they want to have identifiers in bold too, why can't they
create a name "\x0breturn", and somebody will come up with an even more
complicated scheme for accommodating them... wash, rinse, repeat.


-- 
Steven D'Aprano 



From http  Tue Sep 19 02:06:01 2006
From: http (Paul Rubin)
Date: 18 Sep 2006 23:06:01 -0700
Subject: How to efficiently proceed addition and subtraction in python
	list?
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
Message-ID: <7xlkog9yra.fsf@ruckus.brouhaha.com>

"Daniel Mark" <danielmarkhot at gmail.com> writes:
> I have a list AAA = [1, 2, 3] and would like to subtract one from list
> AAA
> so AAA' = [0, 1, 2]
> 
> What should I do?

BBB = [x-1 for x in AAA]


From harbingerofpeace at post.com  Sun Sep 24 01:11:00 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 22:11:00 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
	<1159064765.214210.300630@k70g2000cwa.googlegroups.com>
	<15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
Message-ID: <1159074660.273157.141760@k70g2000cwa.googlegroups.com>

> > Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
> > [GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
> > Type "help", "copyright", "credits" or "license" for more information.
> > >>> import httplib
> > >>> conn = httplib.HTTPConnection("www.python.org")
> > >>> conn.request("GET", "/index.html")
> > Hello World.
>
>       Off-hand -- I'd suggest you do a search of your computer for any
> occurrence of
>       httplib.py
>       httplib.pyc
>       httplib.pyo
> on the odd chance that you are picking up some corrupted version...

Problem solved (sort of...). I searched for "httplib*". I had some
cygwin stuff archived on my Linux box, but the cygwin stuff wasn't in
my search path, but on an odd chance I renamed the cygwin httplib*
files to something else. Problem persisted. On another odd chance I
fired up "python" as root, plugged in the example at
http://www.python.org/doc/current/lib/httplib-examples.html, and things
were clicking... There was a problem with "r2", but that was
understandable...

In my confused state I created a new user, fired up python, slung the
example code, and had no problem (except for "r2", but that was
understandable).

So, I looked at my search path under the account that was experiencing
the problem. That wasn't it... Then I'm thinking there's an
environmental variable causing this. Too many to work right now. Will
investigate later.

So, the problem lies somewhere in the account running Python... Not
sure how/why...

Thanks to all!,
Pete

>
> -=-=-=-=-=-=-=-
> PythonWin 2.4.3 (#69, Apr 11 2006, 15:32:42) [MSC v.1310 32 bit (Intel)]
> on win32.
> Portions Copyright 1994-2004 Mark Hammond (mhammond at skippinet.com.au) -
> see 'Help/About PythonWin' for further copyright information.
> >>> import httplib
> >>> conn = httplib.HTTPConnection("www.python.org")
> >>> conn.request("GET", "/index.html")
> >>> resp = conn.getresponse()
> >>> print resp.getheaders()
> [('content-length', '12196'), ('accept-ranges', 'bytes'), ('server',
> 'Apache/2.0.54 (Debian GNU/Linux) DAV/2 SVN/1.1.4 mod_python/3.1.3
> Python/2.3.5 mod_ssl/2.0.54 OpenSSL/0.9.7e'), ('last-modified', 'Sat, 23
> Sep 2006 23:49:01 GMT'), ('etag', '"61b82-2fa4-99e01540"'), ('date',
> 'Sun, 24 Sep 2006 03:26:30 GMT'), ('content-type', 'text/html')]
> >>> print resp.read()
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
> <head>
> <meta content="text/html; charset=utf-8" http-equiv="content-type" />
> --
>       Wulfraed        Dennis Lee Bieber               KD6MOG
>       wlfraed at ix.netcom.com           wulfraed at bestiaria.com
>               HTTP://wlfraed.home.netcom.com/
>       (Bestiaria Support Staff:               web-asst at bestiaria.com)
>               HTTP://www.bestiaria.com/



From vatamane at gmail.com  Sun Sep 24 01:48:14 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 23 Sep 2006 22:48:14 -0700
Subject: grabbing random words
In-Reply-To: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
Message-ID: <1159076894.181674.59640@k70g2000cwa.googlegroups.com>

Jay,

Your problem is specific to a particular  internet dictionary provider.


 UNLESS

    1) The dictionary page has some specific link that gets you a
random word, OR

    2) after you click through a couple of word definitions you find in
the URLs of the pages  that the  words are indexed using integers and
there no gaps in the sequence,  OR

    3) The dictionary somehow exposes its database for all to access,

THEN you cannot really get random words from it.

If you need random words find yourself lists of such words online
(sites devoted to natural language processing or linguistics might have
them) then load them up into a list and randomly choose between the
indices of the list to get your words.

Nick V.


Jay wrote:
> How would I be able to grab random words from an internet source.  I'd
> like to grab a random word from a comprehensive internet dictionary.
> What would be the best source and the best way to go about this?
> Thanks.
> 
> (Sorry if this sounds/is super noobish.)



From techie2go at gmail.com  Sat Sep  9 06:56:21 2006
From: techie2go at gmail.com (techie2go)
Date: 9 Sep 2006 03:56:21 -0700
Subject: search and replace in a file :: newbie help
Message-ID: <1157799381.062540.59580@i42g2000cwa.googlegroups.com>

hi...
i m now updating an sql file

old file contains lines
insert into mobilebill values ('Apr 01, 03', 'OUT', '91804103253', 34,
3.2);
insert into mobilebill values ('Apr 01, 03', 'OUT', '91806392475', 84,
5.2);
insert into mobilebill values ('Apr 01, 03', 'OUT', '918317048193', 76,
7.6);

i want to replace Apr 01,03 with 2003-01-03 etc...

and my script is
============
import re
lines=open('mb.sql').readlines()  #mb.sql contains the above lines
months={}
months['Jan']='01';months['Feb']='02';months['Mar']='03';months['Apr']='04'
months['May']='05';months['Jun']='06';months['Jul']='07';months['Aug']='08'
months['Sep']='09';months['Oct']='10';months['Nov']='11';months['Dec']='12'
for line in lines:
    #print line
    inp=line
    cre2=re.search('.*(\w{3}\s+\d+\,\s+\d+).*',line)
    (month,day,year)=cre2.group(1).split();
    cre3=re.compile(',')
    day=cre3.sub("",day)
    year='20'+year
    repstr=year+'-'+months[month]+'-'+day
    cre4=re.compile('.*(\w{3}\s+\d+\,\s+\d+).*')
    line=cre4.sub(repstr,line)
    print line
=================
but the output is just
2003-01-04
and not

insert into mobilebill values ('2003-01-04', 'OUT', '91804103253', 34,
3.2);

help me in this regard, what did i do wrong...
thanks and regards
gowthaman B



From paul at boddie.org.uk  Tue Sep 26 09:56:39 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 26 Sep 2006 06:56:39 -0700
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
Message-ID: <1159278999.374338.76170@m73g2000cwd.googlegroups.com>

Fredrik Lundh wrote:
>
> well, I think I prefer the "are you sure you exist?" trolls over the "python sucks
> and you are all a bunch of clueless something something" and "this thing is broken
> beyond repair and you are all a bunch of clueless something something" trolls.

I can see where the "trolling" is coming from, though. If you read
various "industry newspapers" you often see stories about there being a
huge demand for Java or .NET developers, whereas Python barely gets a
mention. One example I read recently [1] described how the marketplace
in Oslo, Norway is currently short of 300-500 Java developers, but if
you look beneath the surface, knowing that there are lots of Java
developers out there looking for work, a gulf between the story and the
facts emerges: the employers who vocally complain about a lack of
talent in the marketplace are typically either those who want to
promote their credentials in some realm ("we're the experts on Java and
can't do enough of it"), those who want to poach employees from their
competitors (a job advertisement for the in-crowd), those who only want
to hire cheap, recently graduated people and are just railing against
the supposed injustice of paying the market rate, or just those who
aren't good at recruiting people (if, as the article says, there's no
point in advertising jobs on high traffic job sites, even though many
companies have recruiters doing most of the legwork, one has to wonder
how competent the recruiters are, and what the employers think they're
paying for).

So, from the perspective of some person reading mainstream news
sources, talking to recruiters, reading job adverts, Python doesn't
appear that much. But one has to question what underlying interests are
at work in continually hyping the demand for other technologies, and if
personal networks are more effective at getting people work, whether
the old-school job classifieds market (on the Internet and otherwise)
is becoming a thing of the past.

Paul

[1] http://www.idg.no/karriere/karrierenyheter/article15027.ece



From quentel.pierre at wanadoo.fr  Wed Sep 13 15:39:40 2006
From: quentel.pierre at wanadoo.fr (Pierre Quentel)
Date: 13 Sep 2006 12:39:40 -0700
Subject: Python blogging software
In-Reply-To: <mailman.6.1158132563.10491.python-list@python.org>
References: <mailman.6.1158132563.10491.python-list@python.org>
Message-ID: <1158176380.298424.130510@b28g2000cwb.googlegroups.com>

Hi,

There is a blog demo in Karrigell : http://karrigell.sourceforge.net

There is a project called KarriBlog aiming to offer a more complete
application, it's still beta but you can see it working on this site
(in French) : http://www.salvatore.exolia.net/site

Regards,
Pierre



From ldo at geek-central.gen.new_zealand  Tue Sep 26 01:41:18 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 17:41:18 +1200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
Message-ID: <efaeg4$5oj$2@lust.ihug.co.nz>

In message <2rTRg.95640$AD5.1277027 at phobos.telenet-ops.be>, Pom wrote:

> I want to convert a Mysql resulset to a dictionary.

Here's a function that does this one row at a time:

def GetEachRecord(TableName, Fields, Condition, Values, Extra = "") :
    """generator which does an SQL query which can return 0 or more
    result rows, yielding each record in turn as a mapping from
    field name to field value. TableName can be a single table name,
    or a comma-separated list of names for a join. Extra allows
    specification of order/group clauses."""
    Cursor = sql.conn.cursor() # modify this as appropriate
    Cursor.execute \
      (
            ", ".join(Fields)
        +
            " from "
        +
            TableName
        +
            " where "
        +
            Condition
        +
            " "
        +
            Extra,
        Values
      )
    while True :
        NextRow = Cursor.fetchone()
        if NextRow == None :
            Cursor.close()
            raise StopIteration
        #end if
        yield dict(zip(Fields, NextRow))
    #end while
#end GetEachRecord

You'd use this something like

    for Link in GetEachRecord(...) :
        ... Link[fieldname] ... blah-blah ...



From grflanagan at yahoo.co.uk  Wed Sep 27 04:34:59 2006
From: grflanagan at yahoo.co.uk (Gerard Flanagan)
Date: 27 Sep 2006 01:34:59 -0700
Subject: Running Python script from C++ code(.NET)
In-Reply-To: <1159277151.292508.55360@i3g2000cwc.googlegroups.com>
References: <1159033792.800413.20660@b28g2000cwb.googlegroups.com>
	<1159277151.292508.55360@i3g2000cwc.googlegroups.com>
Message-ID: <1159346099.415575.262280@b28g2000cwb.googlegroups.com>


volcano wrote:

> volcano wrote:
> > Hello, folks!
> > A trivial question - I have a working Python script that I have to
> > invoke from C++ code. No fancy stuff - just run the whole script with
> > its parameters. No callbacks, no signalling - nada, just
> > stupid,primitive, straightforward call.
> >
> > And while there is a lot of help on embedding, I could not find out how
> > to run script as a whole.SOS!!!!
>
> Thanks a lot to all of you who cared to answer! Eventually it was
> "::CreateProcess", and it works!
>

I used to find http://pinvoke.net a good resource when I was doing
Active Directory stuff.  Just for interest's sake, cutting and pasting
from the CreateProcess page, the following arcana will start Python (
again from C#, but here you can see the internals at least):

using System;
using System.Runtime.InteropServices;

class Class1
{
	[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
	public struct STARTUPINFO
	{
		Int32 cb;
		string lpReserved;
		string lpDesktop;
		string lpTitle;
		Int32 dwX;
		Int32 dwY;
		Int32 dwXSize;
		Int32 dwYSize;
		Int32 dwXCountChars;
		Int32 dwYCountChars;
		Int32 dwFillAttribute;
		Int32 dwFlags;
		Int16 wShowWindow;
		Int16 cbReserved2;
		IntPtr lpReserved2;
		IntPtr hStdInput;
		IntPtr hStdOutput;
		IntPtr hStdError;
	}

	[StructLayout(LayoutKind.Sequential)]
	public struct PROCESS_INFORMATION
	{
		public IntPtr hProcess;
		IntPtr hThread;
		public int dwProcessId;
		public int dwThreadId;
	}

	[StructLayout(LayoutKind.Sequential)]
	public struct SECURITY_ATTRIBUTES
	{
		public int nLength;
		public IntPtr lpSecurityDescriptor;
		public int bInheritHandle;
	}

	[DllImport("kernel32.dll")]
	public static extern bool CreateProcess(string lpApplicationName,
		string lpCommandLine, ref SECURITY_ATTRIBUTES lpProcessAttributes,
		ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandles,
		uint dwCreationFlags, IntPtr lpEnvironment, string
lpCurrentDirectory,
		ref STARTUPINFO lpStartupInfo,
		out PROCESS_INFORMATION lpProcessInformation);

	[STAThread]
	static void Main(string[] args)
	{
		const uint NORMAL_PRIORITY_CLASS = 0x0020;

		bool retValue;
		string Application = @"c:\python\python24\python.exe";
		string CommandLine = "";
		PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION();
		STARTUPINFO sInfo = new STARTUPINFO();
		SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES();
		SECURITY_ATTRIBUTES tSec = new SECURITY_ATTRIBUTES();
		pSec.nLength = Marshal.SizeOf(pSec);
		tSec.nLength = Marshal.SizeOf(tSec);

		retValue = CreateProcess(Application,CommandLine,
			ref pSec,ref tSec,false,NORMAL_PRIORITY_CLASS,
			IntPtr.Zero,null,ref sInfo,out pInfo);

	}
}



From casevh at comcast.net  Fri Sep  1 02:58:39 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 31 Aug 2006 23:58:39 -0700
Subject: ANN: GMPY binaries for Windows 2.5
Message-ID: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>

GMPY binaries for Python 2.5 are available at
http://home.comcast.net/~casevh/

Notes
====
They have not been extensively tested.

This is based on the CVS version of gmpy and includes a patch (not yet
in CVS) from Alex Martelli that resolves a bug with divm(). Please
consider this an "unofficial" release. The patch and the source code
snapshot I used are also available on the website.

GMP 4.2.1 is used.

There are three versions available: one that should work on any
processor, one compiled for Pentium 4 processor, and one compiled for
AMD Athlon (32-bit).

If there is demand, I'll create updated binaries for earlier version of
Python.

Enjoy,

casevh



From steve at holdenweb.com  Tue Sep  5 09:39:06 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 14:39:06 +0100
Subject: CONSTRUCT -
In-Reply-To: <1157462054.163916.57060@m73g2000cwd.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>	<ede27d$pi9$1@news.albasani.net>	<1157299581.865287.225320@p79g2000cwp.googlegroups.com>	<edgpj6$vf1$1@news.albasani.net>
	<1157462054.163916.57060@m73g2000cwd.googlegroups.com>
Message-ID: <edjukk$njn$1@sea.gmane.org>

lazaridis_com wrote:
> Georg Brandl wrote:
> 
>>lazaridis_com wrote:
>>
>>>Georg Brandl wrote:
>>>
>>>>lazaridis_com wrote:
>>>>
>>>>>I would like to fulfill the following task:
>>>>>
>>>>>The construct:
>>>>>
>>>>>if __name__ == '__main__':
>>>>>
>>>>>should be changed to something like:
>>>>>
>>>>>if identifier.name == '__main__':
>>>>>
>>>>>The term "identifier" should be selected based on the meaning of the
>>>>>__double-underscore-enclosure__ of the entities.
>>>
>>>...
>>>
>>>
>>>>import sys
>>>>class _identifier:
>>>>    def __getattr__(self, name):
>>>>        return sys._getframe(1).f_globals['__%s__' % name]
>>>>identifier = _identifier()
>>>
>>>ok, I understand.
>>>
>>>this one would work with modules.
>>>
>>>but how would look a more general solution, which would work with
>>>objects too?
>>
>>Why can't you try to come up with something yourself? You should have
>>had enough exposure to the Python language by now.
>>
>>Georg
> 
> 
> I am not a (python) domain expert.
> 
> Thus I am asking here for available standard-solutions, before I
> implement an own solution.
> 
There is no standard solution for the problem you mention.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From blair.houghton at gmail.com  Wed Sep 13 21:49:52 2006
From: blair.houghton at gmail.com (Blair P. Houghton)
Date: 13 Sep 2006 18:49:52 -0700
Subject: best small database?
In-Reply-To: <mailman.3.1158126072.10491.python-list@python.org>
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>
	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
	<1158125595.442379.287900@e63g2000cwd.googlegroups.com>
	<mailman.3.1158126072.10491.python-list@python.org>
Message-ID: <1158198592.409671.244610@h48g2000cwc.googlegroups.com>


Fredrik Lundh wrote:
> Blair P. Houghton wrote:
>
> > Can't be any harder than switching between incompatible filesystems,
> > unless you assume it should "just work...".
>
> so what file systems are you using that don't support file names and
> binary data ?

Mmmm, no.

I'm saying that the change from Oracle 9 to Oracle 10 is like changing
from ffs to fat32.

They have different structures related to the location and
identification of every stored object.  Sometimes different storage
structures (block sizes, block organization, fragmentation rules, etc.)
for the insides of a file.

A filesystem is a specialized database that stores generalized data.

The value of a database program and its data storage system is that you
can get the filesystem out of the way, and deal only in one layer of
searching and retrieval.

A DB may be only trivially more efficient when the data are a
collection of very large objects with a few externally associated
attributes that can all be found in the average filesystem's directory
structures; but a DB doing raw accesses on a bare disk is a big
improvement in speed when dealing with a huge collection of relatively
small data, each with a relatively large number of inconsistently
associated attributes.

The tradeoff is that you end up giving your DB vendor the option of
making you have to offload and reload that disk if they change their
system between versions.

--Blair



From rdsteph at mac.com  Mon Sep 25 10:29:58 2006
From: rdsteph at mac.com (rdsteph at mac.com)
Date: 25 Sep 2006 07:29:58 -0700
Subject: Talking to marketing people about Python
In-Reply-To: <mailman.565.1159191222.10491.python-list@python.org>
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<roy-B0D639.08575325092006@reader2.panix.com>
	<mailman.565.1159191222.10491.python-list@python.org>
Message-ID: <1159194598.789950.254300@m7g2000cwm.googlegroups.com>

Fredrik Lundh wrote:

> I think the use of "applications" here implies "new applications", not "applications
> still in use somewhere".

Good point, Fredrik. I do recall that, a few years ago,  I graphed the
*growth rate* of new Sourceforge projects written in Python vs. the
same for Perl, and it was a very clear growth trend in Python's favor;
even though Perl still had more total projects because of its earlier
popularity. However, I did not keep the data.

Ron Stephens



From jmcmonagle at velseis.com.au  Thu Sep  7 20:24:52 2006
From: jmcmonagle at velseis.com.au (John McMonagle)
Date: Fri, 08 Sep 2006 10:24:52 +1000
Subject: wxPython: StaticText Event
In-Reply-To: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>
References: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>
Message-ID: <1157675092.5475.8.camel@kuepper.vels-int.com.au>


> Hovering mouse over the StaticText Control should generate an
> EVT_ENTER_WINDOW event like the TextCtrl Control, but it does not happen.
> 
> How can I make the StaticText event working?
> 

According to the book "wxPython In Action", page 186:

"One feature that you cannot see from just the figure is that the
wx.StaticText window never receives or responds to mouse events, and
never takes the user focus."



If you want to create static text that responds to mouse events, try
using the wx.lib.stattext.GenStaticText class.  

Add the following import:

import wx.lib.stattext

Then,

self.st = wx.lib.stattext.GenStaticText(self.pnl, -1, 'Static Text
Control', pos=(30,20))

Regards,

John



-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



From sybrenUSE at YOURthirdtower.com.imagination  Sat Sep 30 05:36:39 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Sat, 30 Sep 2006 11:36:39 +0200
Subject: Escapeism
References: <1159607884.182985.63200@m7g2000cwm.googlegroups.com>
Message-ID: <slrnehsel7.o25.sybrenUSE@schuimige.stuvel.eu>

Kay Schluehr enlightened us with:
> Usually I struggle a short while with \ and either succeed or give up.
> Today I'm in a different mood and don't give up. So here is my
> question:
>
> You have an unknown character string c such as '\n' , '\a' , '\7' etc.
>
> How do you echo them using print?
>
> print_str( c ) prints representation '\a' to stdout for c = '\a'
> print_str( c ) prints representation '\n' for c = '\n'
> ...
>
> It is required that not a beep or a linebreak shall be printed.

try "print repr(c)".

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From s99999999s2003 at yahoo.com  Wed Sep 20 20:13:18 2006
From: s99999999s2003 at yahoo.com (s99999999s2003 at yahoo.com)
Date: 20 Sep 2006 17:13:18 -0700
Subject: Upgrading question
Message-ID: <1158797598.110269.57110@k70g2000cwa.googlegroups.com>

hi
just want to get some opinions
i am working in unix and my Python version is 2.4.1
I would like to upgrade my version to 2.5 stable. but i have many
scripts already running using 2.4.1. Can i just install 2.5 onto
another directory, and then just change every shebang (#! in first
line) in my script to the new directory? That way, my script will also
run correectly right?
thanks



From outstretchedarm at hotmail.com  Tue Sep 12 11:12:02 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 12 Sep 2006 08:12:02 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1158015248.563755.32980@p79g2000cwp.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158015248.563755.32980@p79g2000cwp.googlegroups.com>
Message-ID: <1158073922.601548.278280@m73g2000cwd.googlegroups.com>

thanks for all the responses...

I'm liking the way ulipad and scite work

I'd switch to ulipad entirely if I canget to recognize the python
interpreter in the preferences menu.  I can't seem to figure that out.

Also, I'm highly interested in getting the snippets manager working.

any ideas?



From Eric_Dexter at msn.com  Sun Sep  3 22:55:45 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 3 Sep 2006 19:55:45 -0700
Subject: newbe question about removing items from one file to another file
In-Reply-To: <mailman.10054.1156860158.27775.python-list@python.org>
References: <1156714534.318183.326220@i3g2000cwc.googlegroups.com>
	<1156754881.496114.62170@b28g2000cwb.googlegroups.com>
	<mailman.10054.1156860158.27775.python-list@python.org>
Message-ID: <1157338545.856878.207080@i3g2000cwc.googlegroups.com>


Anthra Norell wrote:
> Dexter,
>
> I looked at the format specification. It contains an example:
>
> -----------------------------------------------
>
> <CsoundSynthesizer>;
>   ; test.csd - a Csound structured data file
>
> <CsOptions>
>   -W -d -o tone.wav
> </CsOptions>
>
> <CsVersion>    ;optional section
>   Before 4.10  ;these two statements check for
>   After 4.08   ;   Csound version 4.09
> </CsVersion>
>
> <CsInstruments>
>   ; originally tone.orc
>   sr = 44100
>   kr = 4410
>   ksmps = 10
>   nchnls = 1
>   instr   1
>       a1 oscil p4, p5, 1 ; simple oscillator
>          out a1
>     endin
> </CsInstruments>
>
> <CsScore>
>   ; originally tone.sco
>   f1 0 8192 10 1
>   i1 0 1 20000 1000 ;play one second of one kHz tone
>   e
> </CsScore>
>
> </CsoundSynthesizer>
>
> -------------------------------------
>
> If I understand correctly you want to write the instruments block to a file (from <CsInstruments> to </CsInstruments>)? Right? Or
> each block to its own file in case there are several?. You want your code to generate the file names? Can you confirm this or
> explain it differently?
>
> Regards
>
> Frederic
>
>
> ----- Original Message -----
> From: <Eric_Dexter at msn.com>
> Newsgroups: comp.lang.python
> To: <python-list at python.org>
> Sent: Monday, August 28, 2006 10:48 AM
> Subject: Re: newbe question about removing items from one file to another file
>
>
> >
> > Anthra Norell wrote:
> > > Eric,
> > >    Having played around with problems of this kind for quite some time I find them challenging even if I don't really have time
> to
> > > get sidetracked. Your description of the problem makes it all the more challenging, because its 'expressionist' quality adds the
> > > challenge of guessing what you mean.
> > >    I'd like to take a look at your data, if you would post a segment on which to operate, the same data the way it should look
> in
> > > the end. In most cases this is pretty self-explanatory. Explain the points that might not be obvious to a reader who knows
> nothing
> > > about your mission.
> > >
> > > Frederic
> > >
> > > ----- Original Message -----
> > > From: <Eric_Dexter at msn.com>
> > > Newsgroups: comp.lang.python
> > > To: <python-list at python.org>
> > > Sent: Sunday, August 27, 2006 11:35 PM
> > > Subject: newbe question about removing items from one file to another file
> > >
> > >
> > > > def simplecsdtoorc(filename):
> > > >     file = open(filename,"r")
> > > >     alllines = file.read_until("</CsInstruments>")
> > > >     pattern1 = re.compile("</")
> > > >     orcfilename = filename[-3:] + "orc"
> > > >     for line in alllines:
> > > >         if not pattern1
> > > >              print >>orcfilename, line
> > > >
> > > > I am pretty sure my code isn't close to what I want.  I need to be able
> > > > to skip html like commands from <defined> to <undefined> and to key on
> > > > another word in adition to </CsInstruments> to end the routine
> > > >
> > > > I was also looking at se 2.2 beta but didn't see any easy way to use it
> > > > for this or for that matter search and replace where I could just add
> > > > it as a menu item and not worry about it.
> > > >
> > > > thanks for any help in advance
> > > >
> > > > --
> > > > http://mail.python.org/mailman/listinfo/python-list
> >
> > sorry about that this is a link to a discription of the format
> > http://kevindumpscore.com/docs/csound-manual/commandunifile.html
> > It is possible to have more than one instr defined in an .csd file so I
> > would need to look for that string also if I want to seperate the
> > instruments out.
> >
> > http://www.dexrow.com
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list

sorry I responded to the wrong post...  I was having trouble figuring
out the buitiful soup download



From steve at holdenweb.com  Sat Sep 30 17:47:46 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 22:47:46 +0100
Subject: Mark Lutz Python interview
In-Reply-To: <1159643501.320802.262970@i3g2000cwc.googlegroups.com>
References: <1159554334.170062.182720@i3g2000cwc.googlegroups.com>	<1159561253.807662.309910@h48g2000cwc.googlegroups.com>
	<1159643501.320802.262970@i3g2000cwc.googlegroups.com>
Message-ID: <451EE602.4060403@holdenweb.com>

Mark Lutz wrote:
> Fuzzyman wrote:
> 
>>Mark Lutz wrote:
>>
>>>Python author and trainer Mark Lutz will be interviewed
>>>on the radio show Tech Talk this Sunday, October 1st,
>>>at 6PM Eastern time.  He'll be answering questions about
>>>Python, his books, and his Python training services.
>>>
>>
>>Does he always talk in the third person ? ;-)
> 
> 
> Yes, I've heard that he does. :-)
> 
Shouldn't that have been "He believes so"?

Good luck in the interview.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From g.brandl-nospam at gmx.net  Tue Sep 26 03:26:44 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 26 Sep 2006 09:26:44 +0200
Subject: A critique of cgi.escape
In-Reply-To: <efa7cg$pr2$1@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz>
Message-ID: <efaknl$867$2@news.albasani.net>

Lawrence D'Oliveiro wrote:
> In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M wrote:
> 
>> Lawrence is right that the escape method doesn't work the way he expects
>> it to.
>> 
>> Rewriting a library module simply because a developer is surprised is a
>> *very* bad idea.
> 
> I'm not surprised. Disappointed, yes. Verging on disgust at some comments in
> this thread, yes. But "surprised" is what a lot of users of the existing
> cgi.escape function are going to be when they discover their code isn't
> doing what they thought it was.

Why should they be surprised? The documentation states clearly what cgi.escape()
does (as does the docstring).

Georg


From fredrik at pythonware.com  Tue Sep 19 07:47:28 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 19 Sep 2006 13:47:28 +0200
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com><1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<4na377F9esroU1@uni-berlin.de>
Message-ID: <eeolcg$jqg$1@sea.gmane.org>

"Diez B. Roggisch" wrote:

>> There is another secondary advantage: the code inside a function runs
>> faster (something related is true for C programs too). Usually this
>> isn't important, but for certain programs they can go 20%+ faster.
>
> I totally fail to see why that should be the case - for python as well as
> for C.
>
> So - can you explain that a bit more, or provide resources to read up on it?

Python stores local variables in an indexed array, but globals in a dictionary.
Looking things up by index is faster than looking them up by name.

Not sure what the C thing is; C doesn't really support putting *code* outside
functions.  Maybe he was thinking about static vs. auto variables ?

</F> 





From jmpurser at gmail.com  Sun Sep 10 11:25:38 2006
From: jmpurser at gmail.com (John Purser)
Date: Sun, 10 Sep 2006 08:25:38 -0700
Subject: Ghostscript interface
In-Reply-To: <1157901268.537694.132250@d34g2000cwd.googlegroups.com>
References: <1157901268.537694.132250@d34g2000cwd.googlegroups.com>
Message-ID: <1157901938.5464.4.camel@localhost.localdomain>

On Sun, 2006-09-10 at 08:14 -0700, defcon8 wrote:
> Does a ghostscript interface for python exist? I have searched google
> quite a bit and all I have been able to find are command line hacks
> from within python. Thanks in advance for any useful help.
> 

I'm not sure what you mean by a "Ghostscript interface".  Ghostscript is
a program.  Yes, you can run it from Python using the same methods you
run any other program from Python but I'd hardly call that an
"interface".

If you're looking for a python postscript generator I believe a google
search will turn up a number of products.

If you're looking for a python .pdf generator you might want to check
out:
http://www.reportlab.org/

John Purser



From ldo at geek-central.gen.new_zealand  Tue Sep 26 20:31:58 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 12:31:58 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><Xns984996E6BABCEduncanbooth@127.0.0.1><slrnehfogu.6tm.jon+usenet@snowy.squish.net><Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
Message-ID: <efcgo3$vu2$2@lust.ihug.co.nz>

In message <mailman.672.1159275735.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Jon Ribbens wrote:
> 
>> This has nothing to do with character encodings.
> 
> it has *everything* to do with encoding of existing data into HTML so it
> can be safely transported to, and recreated by, an HTML-aware client.
> 
> does the word "information set" mean anything to you?

The special characters we're talking about escaping--ampersand, less-than,
single-quote, double-quote--are part of the basic syntax of XML and HTML.
They are information-set-independent.


From sjmachin at lexicon.net  Tue Sep 26 17:36:01 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 14:36:01 -0700
Subject: Unexpected behaviour of csv module
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
	<1159148247.308716.234600@i42g2000cwa.googlegroups.com>
	<ef8208$q37$1$8300dec7@news.demon.co.uk>
	<1159174838.874515.222640@i42g2000cwa.googlegroups.com>
	<45197C09.2040302@andros.org.uk>
Message-ID: <1159306561.771348.218040@m73g2000cwd.googlegroups.com>

Andrew McLean wrote:
> John Machin wrote:
> > You can fix that. The beauty of open source is that you can grab it
> > (Windows: c:\python2?\lib\csv.py (typically)) and hack it about till it
> > suits your needs. Go fer it!
>
> Unfortunately the bits I should change are in _csv.c

We must be talking about different things. IIRC we were talking about
stripping spaces off each field, in your own code. You said that
DictReader was a problem. This can be fixed by changing each of the 3
occurrences of
    row = self.reader.next()
in the DictReader.next method to
   row = [x.strip() for x in self.reader.next()]
or, less kludgedly, by defining a function or method to do that.

Cheers,
John



From robin at reportlab.com  Wed Sep  6 12:31:03 2006
From: robin at reportlab.com (Robin Becker)
Date: Wed, 06 Sep 2006 17:31:03 +0100
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <edmlbv$a9h$1@newsreader2.netcologne.de>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
Message-ID: <44FEF7C7.6030804@chamonix.reportlab.co.uk>

Claudio Grondi wrote:
> 
> Another problem with IronPython where CPython 2.4.2 runs ok was while I 
> was trying to do:
>    f = file(r'\\.\PhysicalDrive0', 'rb')
> getting "ValueError: FileStream will not open Win32 devices such as disk 
> partitions and tape drives. Avoid use of "\\.\" in the path."
> Here the same - I am not sure if it is a bug or a feature.
> 
> Can someone knowledgeable elaborate on it a bit please?
I guess it's M$ being overprotective. Certainly it works in CPython as expected,

 >>> f = file(r'\\.\PhysicalDrive0', 'rb')
 >>> f
<open file '\\.\PhysicalDrive0', mode 'rb' at 0x01292650>

I have used similar to get boot sectors etc, but then did you really think Bill 
would let us play with our own hardware?  Just wait till DRM gets here.
-- 
Robin Becker



From Gerald.Klix at klix.ch  Tue Sep 26 04:16:06 2006
From: Gerald.Klix at klix.ch (Gerald Klix)
Date: Tue, 26 Sep 2006 10:16:06 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <7.0.1.0.0.20060926012529.04a68660@yahoo.com.ar>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<7.0.1.0.0.20060926012529.04a68660@yahoo.com.ar>
Message-ID: <4518E1C6.3010901@klix.ch>

AOL^H^H^H, me too.
And it's paid better than C++ programming.

HTH,
Gerald

Gabriel Genellina schrieb:
> At Monday 25/9/2006 20:09, walterbyrd wrote:
> 
> I do.
> 
>> If so, I doubt there are many.
> 
> 
> That's why they get well paid :)
> (uhm, not really... :( )
> 
> 
> 
> Gabriel Genellina
> Softlab SRL
> 
>     
>     
>        
> __________________________________________________
> Pregunt?. Respond?. Descubr?.
> Todo lo que quer?as saber, y lo que ni imaginabas,
> est? en Yahoo! Respuestas (Beta).
> ?Probalo ya! http://www.yahoo.com.ar/respuestas
> 
> 



From Maria.Reinhammar at accalon.com  Thu Sep 21 08:22:41 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 21 Sep 2006 05:22:41 -0700
Subject: Using py2exe to wrap a service?
In-Reply-To: <mailman.397.1158832369.10491.python-list@python.org>
References: <mailman.397.1158832369.10491.python-list@python.org>
Message-ID: <1158841361.779918.151010@i3g2000cwc.googlegroups.com>


Tim Golden wrote:
[snip..]
> At this point there are several options open to us:
>
> (in no particular order)
> 1) You could nudge the code at line 217 to make use of
> that suggestion.
> 2) I could do that and send you the result.
> 3) I could alter the module so it doesn't use gencache
> at all. I don't seem to be using any constants so the
> Dispatch might as well be dynamic.
> 4) None of the above.
>
> I'm happy to do (3) and send it to you privately if you're
> willing to try. Of course, it might not be the cause
> of the problem in any case!
>
> TJG

Really appreciate!
Reading the page you indicate, I tried solution 3 as it seemed to be
the favored one by the author.. I simply added the lines, doing the
import and the setting the flag, in a copy of the active_directory
module.
But maybe you thought of some other nudging?
Some kind of progress anyway, I guess (see below).
Maybe your offer to do your option (3) is worthwhile after all?

//M

The instance's SvcRun() method failed
  File "win32serviceutil.pyc", line 785, in SvcRun
  File "MailProxySvc.pyc", line 132, in SvcDoRun
  File "MailProxySvc.pyc", line 100, in setup
  File "AddressDB.pyc", line 55, in loadPersonsFromAD
  File "active_directory_M.pyc", line 369, in search
  File "active_directory_M.pyc", line 219, in query
  File "win32com\client\gencache.pyc", line 536, in EnsureDispatch
  File "win32com\client\gencache.pyc", line 520, in EnsureModule
  File "win32com\client\gencache.pyc", line 287, in
MakeModuleForTypelib
  File "win32com\client\makepy.pyc", line 223, in
GenerateFromTypeLibSpec
  File "win32com\client\gencache.pyc", line 141, in GetGeneratePath
exceptions.IOError: [Errno 2] No such file or directory:
'D:\\projects\\MailProxy\\dist\\library.zip\\win32com\\gen_py\\__init__.py'



From george.sakkis at gmail.com  Wed Sep 27 20:49:44 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 27 Sep 2006 17:49:44 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
References: <451b2c0b@news.bezeqint.net>
Message-ID: <1159404584.185268.274460@d34g2000cwd.googlegroups.com>

efrat wrote:

> 1. What exactly is a Python list? If one writes a[n], then is the
> complexity Theta(n)? If this is O(1), then why was the name "list"
> chosen? If this is indeed Theta(n), then what alternative should be
> used? (array does not seem suited for teaching purposes.)

Indexing for python lists is O[1]. Why shouldn't they be named lists ?

> 2. Suppose I have some file example.py, and I'd like to incorporate it
> **into** part of an HTML page with nice syntax highlighting and all the
> shebang. Is there an easy way to do so?
> (Sorry, but any Google query involving "Python" and "HTML" (with any
> other additional terms) led to Python HTML processing libraries.)

Check out MoinMoin, it colorizes python as well as other languages and
text types: http://moinmoin.wikiwikiweb.de/HelpOnFormatting

> 3. Are there any useful links for Python/DSA education? I found "Data
> Structures and Algorithms with Object Oriented Design Patterns"
> (http://www.brpreiss.com/books/opus7/html/book.html). It is a fine book,
> but it is unsuitable: my students are electrical-engineers, and barely
> know how to program; teaching them DSA, python, **and** stuff like the
> visitor pattern seems impossible.

"Beginning Python - From Novice to Professional" is approachable and
great as a textbook IMO. As a bonus, it covers up to python 2.4, which
very few existing books do.

George



From fredrik at pythonware.com  Thu Sep 21 05:30:16 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 21 Sep 2006 11:30:16 +0200
Subject: Evaluation of Truth Curiosity
In-Reply-To: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
References: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
Message-ID: <eetm38$b50$1@sea.gmane.org>

James Stroud wrote:

> I'm curious, in
> 
> py> 0 | (1 == 1)
> 1
> py> False | (1 == 1)
> True
> 
> What is the logic of the former expression not evaluating to True (or 
> why the latter not 1?)? Is there some logic that necessitates the first 
> operand's dictating the result of the evaluation? Or is this an artefact 
> of the CPython implementation?

looks like you're confusing binary or ("|") with logical or ("or").

binary or on booleans are only defined for boolean | boolean; for any 
other combination, the usual coercion rules apply.

</F>



From onurb at xiludom.gro  Thu Sep 14 08:35:24 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 14 Sep 2006 14:35:24 +0200
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
Message-ID: <45094c8c$0$16102$626a54ce@news.free.fr>

John Henry wrote:
> Hi list,
> 
> Just to make sure I understand this.
> 
> Since there is no "pointer" type in Python, I like to know how I do
> that.
> 
> For instance, if I do:
> 
>    ...some_huge_list is a huge list...
>    some_huge_list[0]=1
>    aref = some_huge_list
>    aref[0]=0
>    print some_huge_list[0]
> 
> we know that the answere will be 0.  In this case, aref is really a
> reference.
> 
> But what if the right hand side is a simple variable (say an int)?  Can
> I "reference" it somehow?  Should I assume that:
> 
>    aref = _any_type_other_than_simple_one
> 
> be a reference, and not a copy?

short answer : Python won't copy anything until explicitely asked to.

Longer answer:

First, there's nothing like "simple" type or var in Python. All that you
have are names and objects. The statement 'some_name = some_obj' "binds"
together 'some_name' and 'some_obj' - IOW, once this statement is
executed, 'some_name' refers to ('points to') 'some_obj' (think of it as
an equivalent of 'globals['some_name'] = some_obj', and you won't be far
from truth). This is how it works for all and any type.

What you really need to understand is that in Python, a 'variable' is
*only* a name. It's *not* the object itself.

Now we have mutable and immutable types. Immutable types are (mainly)
numerics, strings and tuples. As the qualificative implies, one cannot
change the state (ie value) of an object of immutable type. Also, note
that mutating (modifying the state of an object) and assignment (binding
a name to an object) are two very different things. Rebinding a name
just make it points to another object, it doesn't impact the object
previously bound to that name (not directly at least, cf memory management).

To come back to your code snippet:

# binds name "some_huge_list" to an empty list
some_huge_list = []

# mutate the list object bound to name 'some_huge_list'
some_huge_list[0]=1

# binds name "aref" to the list object
# already bound to name 'some_huge_list'
aref = some_huge_list

# you can verify that they are the same object:
assert aref is some_huge_list
# nb : in CPython, id(obj) returns the memory address of obj
# FWIW, identity test (obj1 is obj2) is the same as
# equality test on objects id (ie id(obj1) == id(obj2))
print id(aref)
print id(some_huge_list)

# mutate the list object bound to names 'aref' and 'some_huge_list'
aref[0]=0

# Now lets go a bit further and see what happens when we rebind
# some_huge_list:

some_huge_list = []

# does this impact aref ?
print aref
aref is some_huge_list

# well, obviously not.
# name 'aref' is still pointing to the same object:
print id(aref)
# but name 'some_huge_list' now points to another object:
print id(some_huge_list)

To answer your question : it works *exactly* the same way for immutable
objects:

a = 333000000000000
b = a
print b is a # True

b = 333000000000000
print b is a # False

The only difference here is that you can not alter the value of (IOW
mutate) an immutable object. So having a reference to it won't buy you
much... If you want to "share" an immutable object, you have to embed it
into a mutable container and share this container:

a = [333000000000000]
b = a
b[0] = 333000000000001
assert a is b
assert a[0] is b[0]
print a[0]

As a side note : when passing arguments to a function, the arguments
themselves are (references to) the original objects, but the names are
local to the function, so mutating an object passed as argument will
effectively impact the object (if it's mutable of course !-), but
rebinding the name inside the function won't change anything outside the
function :

def test(arg)
  # really mutates the object passed in
  arg[0] = 42
  print "in test : arg is %s (%s)" % (arg, id(arg))

  # only rebinds the local name 'arg'
  arg = []
  print "in test : now arg is %s (%s)" % (arg, id(arg))

def runtest():
  obj = ["Life, universe and everything"]
  print "in runtest : obj is %s (%s)" % (obj, id(obj))
  print "calling test with obj:"
  test(obj)
  print "in runtest: now obj is %s (%s)" % (obj, id(obj))

Here again, if you want your function to alter the value of an immutable
object passed as argument, you have to embed it in a mutable container.
*But* this is usually useless - it's perfectly legal for a Python
function to return multiple values :

def multi(x):
  return x+1, x*2

y, z = multi(42)
print "y : %s - z : %s" % (y, z)

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From vatamane at gmail.com  Fri Sep 29 23:09:38 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 29 Sep 2006 20:09:38 -0700
Subject: Block Diagram / digraph Editor
References: <1159570406.255129.166680@h48g2000cwc.googlegroups.com>
Message-ID: <1159585778.556493.201830@m7g2000cwm.googlegroups.com>

I was trying  to create a small graph editor a while ago and was
looking for a similar thing. I found the diacanvas project
(http://diacanvas.sourceforge.net/) that does some of these things you
mentioned but for me it wasn't mature enough back then.

Then, I eventually settled on using the standard Canvas widget that
comes with Tkinter. The benefits are that Tkinter comes standard with
Python, and wx or gtk still don't have anything standard that comes
close to the Tk Canvas widget.  With the Tk Canvas you will have to go
to a lower level than with diacanvas, and also  _overall_ Tkinter is
behind other modern GUI kits out there.

Hope this helps,
Nick Vatamaniuc




MakaMaka wrote:
> Hi,
> Does anybody know of a good widget for wxpython, gtk, etc. that allows
> the editing of block diagrams and make it easy to export the diagram as
> a digraph?  It has to be available under Windows.  I want the user to
> draw a series of blocks on a canvas, connect them with directional
> arrows, and then a function will extract the digraph this represents
> and do some graph traversal algorithms on it.  Think DIA or VISIO w/
> only a few blocks and connectors available.  Any ideas?  I'd rather not
> build my own w/ OGL....
> 
> 
> thanks,
> -Justin



From exarkun at divmod.com  Fri Sep 15 11:27:58 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Fri, 15 Sep 2006 11:27:58 -0400
Subject: UDP packets to PC behind NAT
In-Reply-To: <1158305569.589944.146730@b28g2000cwb.googlegroups.com>
Message-ID: <20060915152758.1717.545041297.divmod.quotient.49974@ohm>

On 15 Sep 2006 00:32:49 -0700, Janto Dreijer <jantod at gmail.com> wrote:
>This is probably more of a networking question than a Python one, but
>it would be nice to know if someone has done this with Python's socket
>module. And besides one usually gets more information from c.l.py than
>anywhere else :)
>
>I have a server with a static "public" IP and a client behind a NAT. I
>would like to send UDP packets from the server to the client. So what I
>need to do is open up a "hole" in the NAT and let the server know the
>target IP and port of the client where it can send its packets.
>
>Now I have read somewhere that you can have TCP and UDP running on the
>same port. Not sure if this is true. Would it be a reasonable solution
>to initiate a TCP connection from the client to the server and somehow
>(?) let the server figure out how the client is connecting? And then
>send UDP to client over the same (IP, port)?

You may be interested in Divmod Vertex (<http://divmod.org/trac/wiki/DivmodVertex>) for its NAT traversal techniques, if not for its actual code.

The solution you describe above won't work on any widespread configuration
I am aware of.  In general, most individual solutions are only effective on
a portion of existing configurations.  A robust solution must employ multiple
techniques.

Jean-Paul


From half.italian at gmail.com  Tue Sep 19 00:34:24 2006
From: half.italian at gmail.com (half.italian at gmail.com)
Date: 18 Sep 2006 21:34:24 -0700
Subject: Recursing for Progress Bar
In-Reply-To: <pjKPg.13972$xQ1.890@newsread3.news.pas.earthlink.net>
References: <1158633528.072727.212760@h48g2000cwc.googlegroups.com>
	<pjKPg.13972$xQ1.890@newsread3.news.pas.earthlink.net>
Message-ID: <1158640463.899941.272440@k70g2000cwa.googlegroups.com>

DOLT!

Thanks!

Dennis Lee Bieber wrote:
> On 18 Sep 2006 19:38:48 -0700, "half.italian at gmail.com"
> <half.italian at gmail.com> declaimed the following in comp.lang.python:
>
> >
> > Is there a way to get around recursion limits?  Help!
> >
> 	Yes... restructure your code to not use recursion...
>
> 	Should be easy since your incomplete snippet implied that there is
> NO RETURN VALUE. Recursion is often used when the value of a computation
> has to be fed to the next higher level of the calculation (the infamous
> factorial:
>
> 	fact(6)	=	6 * fact(6-1)
> 					5 * fact(5-1)
> 						4 * fact(4-1)
> 							3 * fact(3-1)
> 								2 * fact(2-1)
> 									1	(by definition: fact(1) = 1)
> 								2
> 							6
> 						24
> 					120
> 				720
>
> >
> >       def incrementProgress(self, window, workorder):
> >
> 		while self.p < 100 and workorder.contents:
> 			dest_count = workorder.copyIndex
> 			self.label.config(text=workorder.movingFile)
> 			src_count = len(workorder.contents)
> 			self.p = (float(dest_count) / float(src_count)) * 100.0
> 			print "Percentage copied:", self.p
> 			self.progressBar.updateProgress(self.p)
> 			time.sleep(0.1)
>
> 		window.destroy()
> 		self.p = 0
> 		return
>
>
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From spamspam at spam.eggs  Thu Sep 21 16:37:14 2006
From: spamspam at spam.eggs (Ben C)
Date: Thu, 21 Sep 2006 15:37:14 -0500
Subject: Strange behaviour of 'is'
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
Message-ID: <slrneh5ttn.pik.spamspam@bowser.marioworld>

On 2006-09-21, Fijoy George <tofijoy at yahoo.co.in> wrote:
> Hi all,
>
> I am a bit perplexed by the following behaviour of the 'is' comparator
>
>>>> x = 2.
>>>> x is 2.
> False
>>>> y = [2., 2.]
>>>> y[0] is y[1]
> True
>
> My understanding was that every literal is a constructure of an object. 
> Thus, the '2.' in 'x = 2.' and the '2.' in 'x is 2.' are different objects. 
> Therefore, the comparison yields false.
>
> But my understanding does not explain the result of the second comparison. 
> According to the experiment, y[0] and y[1] are the same object!

I'm as baffled as you, even more so its implication:

>>> a = 2.
>>> b = 2.

>>> a is b
False

>>> a, b = 2., 2.
>>> a is b
True


From richard.charts at gmail.com  Tue Sep 19 14:57:09 2006
From: richard.charts at gmail.com (richard.charts at gmail.com)
Date: 19 Sep 2006 11:57:09 -0700
Subject: help with relative imports
In-Reply-To: <pMWPg.5$1n3.96@news.tufts.edu>
References: <bgWPg.3$1n3.37@news.tufts.edu>
	<mailman.286.1158690229.10491.python-list@python.org>
	<pMWPg.5$1n3.96@news.tufts.edu>
Message-ID: <1158692229.520655.125720@m73g2000cwd.googlegroups.com>


John Salerno wrote:
> Robert Kern wrote:
>
> > What is ambiguous about A.B.D, A.E, and A.F.G? But if you like:
>
> I guess maybe I was looking at it backwards. From the way it was worded,
> I thought the only information we had to use was the structure A.B.C,
> and then given a statement like:
>
> from . import D
>
> we just had to figure out for ourselves that this results in A.B.D,
> instead of, for example, A.C.D, or any other possibility.
>
> But I'm still a little confused about the use of the single or double
> period. In this case:
>
> from . import D                 # Imports A.B.D
> from .. import E                # Imports A.E
>
> why do you need a single period in the first example, and a double in
> the second, if they both are importing from A? If E is directly under A,
> couldn't you just use a single period? And since D is nested twice
> beneath A (i.e., in A, then in B), wouldn't you need two periods there
> instead?

I was staring at this too for a bit.
You just have to remember basic directory relative paths:
. -> Current Directory
.. -> One level up from current.

At least I'm assuming this is right based on the test and the example
above.



From stefaan.himpe at gmail.com  Tue Sep 12 03:22:22 2006
From: stefaan.himpe at gmail.com (stefaan.himpe at gmail.com)
Date: 12 Sep 2006 00:22:22 -0700
Subject: auto upgrade scripts?
In-Reply-To: <4505EB1E.5070007@websafe.com>
References: <1158006065.042514.209950@q16g2000cwq.googlegroups.com>
	<4505EB1E.5070007@websafe.com>
Message-ID: <1158045742.490620.29520@h48g2000cwc.googlegroups.com>

> Auto-upgrade from what to what?
> -Larry Bates

Interesting question.

In my case I want my program to check for (e.g.) bug-fix releases on
some location (network drive or ftp), and if available, allow to
automatically download and install them.
Kind of like the AutoUpgrade functionality in .net (*shudder*) ;)

Best regards,
Stefaan.



From kay.schluehr at gmx.net  Sat Sep  9 00:14:04 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 8 Sep 2006 21:14:04 -0700
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <pan.2006.09.05.05.58.03.689280@gmx.net>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
Message-ID: <1157775244.717666.184850@i42g2000cwa.googlegroups.com>

 > It's not a bug, it's a feature.  And answered as third point in the
FAQ:
>
> http://www.sqlite.org/faq.html#q3
>
> I think your whole experience is based on it.  Live with it or use a
> real RDBMS.
>
> If you are so fond of static typing, why are you using Python in the first
> place?  Just see it as consistency -- dynamically typed language ?
> dynamically typed DB columns.  ;-)
>
> Ciao,
> 	Marc 'BlackJack' Rintsch

I have to admit I find this bogus too. It has by no means anything to
do with static typing but letting "errors pass silently" i.e.
deactivating runtime type checks as well. The problem here is that
fields are not dynamically type checked but completely untyped and only
coercion hints are present. Using a clever coercion / "type-affinity"
does not justify that there is no error case handling when the coercion
fails. This might be handled by user code ( or better by the pysqlite
wrapper ) but it appears to be redundant.



From usenet at vfx.org.uk  Thu Sep 28 19:45:24 2006
From: usenet at vfx.org.uk (Mike Playle)
Date: Fri, 29 Sep 2006 00:45:24 +0100
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.847.1159402807.10491.python-list@python.org>
	<pan.2006.09.28.12.49.40.745821@vfx.org.uk>
	<slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
	<mailman.892.1159459686.10491.python-list@python.org>
	<slrnehnuut.bmu.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <pan.2006.09.28.23.45.23.622848@vfx.org.uk>

On Thu, 28 Sep 2006 18:44:13 +0200, Sybren Stuvel wrote:

> Steve Holden enlightened us with:
>> And you guarantee that the contents of the smartcard is only used by one
>> user at a time by building a licensing system for the smartcards?
> 
> We can never, ever make a 100% guarantee that people won't copy what you
> supply them. The only way to do that is to thoroughly monitor them 24/7,
> violating every privacy law in existance.

Yes, this is an important part of the point I'm trying to make.

The people who want to use your software illegitimately will succeed no
matter what you do, so you shouldn't worry about them. Worry instead about
the people who DON'T want to use it illegitimately. Can a license key
scheme help them? If so, implement it. No trickery is needed - a simple
comparison will suffice.

Mike



From zlatko.matic1 at sb.t-com.hr  Sat Sep  2 15:00:55 2006
From: zlatko.matic1 at sb.t-com.hr (tatamata)
Date: Sat, 2 Sep 2006 21:00:55 +0200
Subject: NetBeans and Jython
Message-ID: <edckd7$vru$1@fegnews.vip.hr>

Hello.
I installed NetBeans, Jython and Coyote. I hoped that I could use Swing GUI 
builder intergrated in NetBeans (Matisse?) with Jython in "Delphi" way. But, 
it seems that I can drag and drop controls only in pure Java application, 
not in Jython application?
Does anybody uses NetBeans as GUI/RAD tool for Jython/Python?

Regards,

Zlatko 




From duncanm255 at hotmail.com  Thu Sep  7 13:48:20 2006
From: duncanm255 at hotmail.com (D)
Date: 7 Sep 2006 10:48:20 -0700
Subject: Automate Web Configuration
Message-ID: <1157651299.957385.96190@b28g2000cwb.googlegroups.com>

I would like to write a program that will automate the configuation of
a firewall or router via HTTPS.  So, I need to import the applicable
certificate, and be able to configure the unit as if I was
typing/selecting the appropriate fields manually using a web browser.
If there is a command-line based tool that would allow me to do this, I
would be more than willing to give it a try.  Otherwise, is there a
Python library that would do the same?  Thanks.



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sun Sep 24 07:37:34 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 24 Sep 2006 13:37:34 +0200
Subject: Verify an e-mail-adress - syntax and dns
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
Message-ID: <4nn8vuFb1oe9U1@individual.net>

Ingo Linkweiler wrote:

> yes, I do this allready. But it would be nice to do some checks
> before to avoid wrong user inputs.

What do you do if the user inputs a "wrong" address? If you reject
with an error message, the medium intelligent user will enter
something like

sdjfgsdjhg at gmx.net

as next try, circumventing your test.

Regards,


Bj?rn

-- 
BOFH excuse #178:

short leg on process table



From steve at REMOVE.THIS.cybersource.com.au  Wed Sep 27 09:11:34 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Wed, 27 Sep 2006 23:11:34 +1000
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<1159271339.775493.132180@i3g2000cwc.googlegroups.com>
	<mailman.669.1159272062.10491.python-list@python.org>
Message-ID: <pan.2006.09.27.13.11.34.185704@REMOVE.THIS.cybersource.com.au>

On Tue, 26 Sep 2006 22:00:55 +1000, Anthony Baxter wrote:

> This seems to be a very, very silly original post. I know of plenty of
> people who make a living programming Python. It's been the vast
> majority of the programming (for money) I've done in the last ten
> years, and there's countless other people I know here in Melbourne in
> the same position.

Countless people? Are we talking aleph-zero people (countable infinity) or
one of the uncountable infinities?


-- 
Steven.



From sylvain.thenault at logilab.fr  Tue Sep 26 05:15:19 2006
From: sylvain.thenault at logilab.fr (Sylvain =?iso-8859-1?Q?Th=E9nault?=)
Date: Tue, 26 Sep 2006 11:15:19 +0200
Subject: [ANN] logilab-astng 0.16.1
Message-ID: <20060926091518.GE24712@crater.logilab.fr>


Hi there !

I'm pleased to announce the 0.16.1 release of Logilab astng package.
This release include some major bug fixes (pylint crashs, 2.5 compatibility)
and have tests passing from python 2.3 to python 2.5 :). You're higly encouraged
to upgrade if you're currently using the 0.16.0 release.

What's new ?
------------
* python 2.5 support, patch provided by Marien Zwart
* fix [Class|Module].block_range method (this fixes pylint's inline
  disabling of messages on classes/modules)
* handle class.__bases__ and class.__mro__ (proper metaclass handling
  still needed though)
* drop python2.2 support: remove code that was working around python2.2
* fixed generator expression scope bug
* patch transformer to extract correct line information


Home page
---------
http://www.logilab.org/projects/astng

Download
--------
ftp://ftp.logilab.org/pub/astng

Mailing list
------------
mailto://python-projects at lists.logilab.org

LOGILAB provides services in the fields of XML techniques and advanced
computing (implementation of intelligent agents, knowledge management,
natural language processing, statistical analysis, data mining, etc.),
and also trainings on Python, XML, UML, Object Oriented design, design
patterns use and other cutting edge topics. To know more about
Logilab, visit http://www.logilab.com/.

Logilab is also a strong supporter of the Free Software movement, and an
active member of the Python and Debian communities. Logilab's open 
source projects can be found on http://www.logilab.org/.
-- 
Sylvain Th?nault                               LOGILAB, Paris (France)
Formations Python, Zope, Plone, Debian:  http://www.logilab.fr/formations
D?veloppement logiciel sur mesure:       http://www.logilab.fr/services
Python et calcul scientifique:           http://www.logilab.fr/science



From lycka at carmen.se  Thu Sep 14 07:47:06 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Thu, 14 Sep 2006 13:47:06 +0200
Subject: best small database?
In-Reply-To: <0rdNg.6440$c22.5757@trnddc07>
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <eebffr$4ui$1@wake.carmen.se>

David Isaac wrote:
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.
> 
> Suggestions?

You haven't provided enough requirements for us
to make any intelligent suggestions. Perhaps you
might learn something from reading through my old
EuroPython presentation.

http://www.thinkware.se/cgi-bin/thinki.cgi/DatabaseProgrammingWithPython

Relational databases with SQL syntax provides a convenient
way to store data with an appropriate structure. You can
always force a tool into handling things it wasn't designed
for, but SQL database work best when you have strict, well
defined structures, such as in accounting systems, booking
systems etc. It gives you a declarative query language,
transaction handling, typically multi user support and
varying degrees of scalability and high availability
features.

For you, it's probably overkill, and if you have files
to start with, keeping them in the file system is the
natural thing to do. That means that you can use a lot
of standard tools to access, manipulate, backup and search
through them. Perhaps you rather need a search engine for
the file system?

Do you intend to store information concerning how these
files relate to each other? Perhaps it's better in that
case to just keep that relationship information in some
small database system, and to keep the actual files in
the file system.

Perhaps it's enough to keep an XML file with the structure,
and to use something like ElementTree to manipulate that
XML structure.

You gain a lot of power, robustness and flexibility by
using some kind of plain text format. Simple files play
well with configuration management systems, backup systems,
editors, standard search tools, etc. If you use XML, it's
also easier to transform your structural information to
some presentable layout through standard techniques such
as XSL.



From rtw at freenet.co.uk  Fri Sep  8 20:12:08 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Fri, 08 Sep 2006 19:12:08 -0500
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
Message-ID: <Xns9839C4FD80E2rtwfreenetREMOVEcouk@216.196.109.145>

bvdp at xplornet.com wrote in news:1157758817.446690.105620
@i42g2000cwa.googlegroups.com in comp.lang.python:

> Please help my poor brain :) Every time I try to do a list
> comprehension I find I just don't comprehend ...
> 
> Anyway, I have the following bit of code:
> 
> seq = [2, 3, 1, 9]
> tmp = []
> for a in range(len(seq)):
>         tmp.extend([a]*seq[a])
> 
> which correctly returns:
> 
> [0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
> 
> Question is, can I do this as a list comprehension?
> 

Well apparently I can, though it did take me 2 goes:

>>> seq = [2, 3, 1, 9]
>>> sum( [ [a]*seq[a] for a in range(len(seq)) ] )

Traceback (most recent call last):
  File "<pyshell#1>", line 1, in -toplevel-
    sum( [ [a]*seq[a] for a in range(len(seq)) ] )
TypeError: unsupported operand type(s) for +: 'int' and 'list'
>>> sum( [ [a]*seq[a] for a in range(len(seq)) ], [] )
[0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
>>> 

But thats just me showing off what a filthy programmer I am.

My third attempt went like:

>>> [ x for a in a in range(len(seq)) for x in [a] * seq[a] ]

Traceback (most recent call last):
  File "<pyshell#3>", line 1, in -toplevel-
    [ x for a in a in range(len(seq)) for x in [a] * seq[a] ]
TypeError: iteration over non-sequence

Ah the perils of cut-n-paste (and my what a strange error), 
But my forth attemp yeilded (If that's a pun I do appologise)
this:

>>> [ x for a in range(len(seq)) for x in [a] * seq[a] ]
[0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
>>> 

Which is possibly something you might of expected.

Note the unrolled version goes:

>>> tmp = []
>>> for a in range(len(seq)):
       for x in [a] * seq[a]:
           tmp.append( x )
		
>>> tmp
[0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
>>> 

IOW a comprehension appends rather than extends. Other than
that you move the value you're appending from the inside of
the loop('s) to the begining of the comprehension then remove
newlines and colon's [inside some brakets ofcourse].

Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From paddy3118 at netscape.net  Sat Sep 16 02:28:53 2006
From: paddy3118 at netscape.net (Paddy)
Date: 15 Sep 2006 23:28:53 -0700
Subject: min() & max() vs sorted()
References: <1158280516.219493.61600@p79g2000cwp.googlegroups.com>
	<mailman.113.1158281793.10491.python-list@python.org>
	<1158360690.311434.208840@p79g2000cwp.googlegroups.com>
Message-ID: <1158388133.065860.93070@i42g2000cwa.googlegroups.com>

MRAB wrote:
> Tim Peters wrote:
> > [MRAB]
> > > Some time after reading about Python 2.5 and how the built-in functions
> > > 'min' and 'max' will be getting a new 'key' argument, I wondered how
> > > they would treat those cases where the keys were the same, for example:
> > >
> > > L = ["four", "five"]
> > > print min(L, key = len), max(L, key = len)
> > >
> > > The result is:
> > >
> > > ('four', 'four')
> >
> > min() and max() both work left-to-right, and return the minimal or
> > maximal element at the smallest index.
> >
> It doesn't say that in the documentation.
>
> > > I would've thought that min(...) should return the same as
> > > sorted(...)[0] (which it does)
> >
> > It does, but only because Python's sort is stable, so that minimal
> > elements retain their original relative order.  That implies that the
> > minimal element with smallest original index will end up at index 0
> > after sorting.
> >
> > > and that max(...) should return the same as sorted(...)[-1] (which it doesn't).
> >
> > Right -- although I don't know why you'd expect that.
> >
> Strings have index(), find(), etc which work left-to-right and
> rindex(), rfind(), etc which work right-to-left.
>
> Lists have index() but not rindex().
>
> I just thought that if min() and max() work left-to-right then for
> completeness there should also be rmin() and rmax(); alternatively,
> min() should return sorted()[0] and max() should return sorted()[-1]
> for symmetry (my personal preference).

Strange, but I've never thought of min and max in the way you do. If
anything I think of them as being distinct from sort; a way to get the
appropriate values without going to the bother of a full sort. After
doing my excercises on implementing sort routines, and reading about
cPythons sort algorithm, if I want just max or min, then I won't go
sorting in a hurry. I am quite happy with min and max just returning
the value.
With the addition of the key then I might want the option of returning
key(value) instead of value, i.e. 4 instead of "four".

- Paddy.

P.S. I have not played with Python 2.5 as yet



From fperez.net at gmail.com  Wed Sep  6 17:14:33 2006
From: fperez.net at gmail.com (Fernando Perez)
Date: Wed, 06 Sep 2006 15:14:33 -0600
Subject: Scientific computing and data visualization.
References: <mailman.85.1157564525.5279.python-list@python.org>
	<1157574433.664189.217960@m73g2000cwd.googlegroups.com>
Message-ID: <edndlf$bvh$1@sea.gmane.org>

Matteo wrote:

> One hurdle to overcome is transferring array data from Numeric/Numpy
> into VTK. I have a sort of ad-hoc method to do that (mainly for volume
> data). If anyone knows of any elegant solution, or a module to ease the
> pain, I'd like to hear about it.

https://svn.enthought.com/enthought/wiki/TVTK

Much, much, MUCH nicer interface to VTK than the plain bindings that come by
default.  And built from the ground up to seamlessly couple numpy with VTK.

Cheers,

f



From __peter__ at web.de  Mon Sep 11 09:31:25 2006
From: __peter__ at web.de (Peter Otten)
Date: Mon, 11 Sep 2006 15:31:25 +0200
Subject: Problems with email.Generator.Generator
References: <mailman.239.1157955783.5279.python-list@python.org>
Message-ID: <ee3odb$ck9$00$1@news.t-online.com>

Chris Withers wrote:

> The following piece of code is giving me issues:
> 
> from email.Charset import Charset,QP
> from email.MIMEText import MIMEText
> charset = Charset('utf-8')
> charset.body_encoding = QP
> msg = MIMEText(
>      u'Some text with chars that need encoding: \xa3',
>      'plain',
>      )
> msg.set_charset(charset)
> print msg.as_string()
> 
> Under Python 2.4.2, this produces the following output, as I'd expect:
> 
> MIME-Version: 1.0
> Content-Transfer-Encoding: 8bit
> Content-Type: text/plain; charset="utf-8"
> 
> Some text with chars that need encoding: =A3
> 
> However, under Python 2.4.3, I now get:
> 
> Traceback (most recent call last):
>    File "test_encoding.py", line 14, in ?
>      msg.as_string()
>    File "c:\python24\lib\email\Message.py", line 129,
> in
> as_string
>      g.flatten(self, unixfrom=unixfrom)
>    File "c:\python24\lib\email\Generator.py", line 82,
> in flatten
>      self._write(msg)
>    File "c:\python24\lib\email\Generator.py", line 113,
> in _write
>      self._dispatch(msg)
>    File "c:\python24\lib\email\Generator.py", line 139,
> in
> _dispatch
>      meth(msg)
>    File "c:\python24\lib\email\Generator.py", line 182,
> in
> _handle_text
>      self._fp.write(payload)
> UnicodeEncodeError: 'ascii' codec can't encode
> character
> u'\xa3' in position 41:
>   ordinal not in range(128)
> 
> This seems to be as a result of this change:
> 
>
http://svn.python.org/view/python/branches/release24-maint/Lib/email/Generator.py?rev=42272&r1=37910&r2=42272
> 
> ...which is referred to as part of a fix for this bug:
> 
>
http://sourceforge.net/tracker/?func=detail&aid=1409455&group_id=5470&atid=105470
> 
> Now, is this change to Generator.py in error or am I doing something
> wrong?

I'm not familiar enough with the email package to answer that.
 
> If the latter, how can I change my code such that it works as I'd expect?

email.Generator and email.Message use cStringIO.StringIO internally, which
can't cope with unicode. A quick fix might be to monkey-patch:

from StringIO import StringIO
from email import Generator, Message
Generator.StringIO = Message.StringIO = StringIO
# your code here

Peter


From carsten at uniqsys.com  Thu Sep 21 09:08:59 2006
From: carsten at uniqsys.com (Carsten Haese)
Date: Thu, 21 Sep 2006 09:08:59 -0400
Subject: Nested Looping SQL Querys
In-Reply-To: <3bpQg.318$o71.173@newsread3.news.pas.earthlink.net>
References: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
	<8veQg.10183$v%4.4387@newsread1.news.pas.earthlink.net>
	<mailman.339.1158772948.10491.python-list@python.org>
	<3bpQg.318$o71.173@newsread3.news.pas.earthlink.net>
Message-ID: <1158844139.9195.19.camel@dot.uniqsys.com>

On Thu, 2006-09-21 at 01:12, Dennis Lee Bieber wrote:
> On Wed, 20 Sep 2006 13:21:54 -0400, Steve Holden <steve at holdenweb.com>
> declaimed the following in comp.lang.python:
> 
> > .execute() is a cursor method, not a connection method. Some DB API 
> > modules do implement it as a connection method, but that makes it 
> > impossible for several cursors to share the same connection (which is 
> > allowed by some modules).
> >
> 	It struck me that the original wasn't using a cursor just after the
> messages posted.

It doesn't look like the OP is using anything even remotely DB-API
compliant:

"""
import cmi
<snip>
import hermes
conn = hermes.db()
<snip>

pubID=cgiForm.getvalue('pubID')
pubName=cgiForm.getvalue('pubName','Unknown Publication')

sqlcheck1 = "SELECT pub_type FROM medusa.cmi_publication WHERE pub_id =
'"+pubID+"'"
overseas1 = conn.query(sqlcheck1)
pubType = cmi.fetch_rows(overseas1)
"""

hermes is apparently some wrapper that magically can connect to a
well-known database (via the argumentless db()) call. Who knows what
kind of animal the 'conn' object is that comes out of that db() call.
Apparently it's an object with a query() method that returns something
like a cursor that can be passed into cmi.fetch_rows(). At this point I
wonder why the responsibility of fetching rows is in a module separate
from the responsibility of establishing a database connection.

Legacy code, indeed.

-Carsten




From floguy at gmail.com  Sat Sep 30 14:55:57 2006
From: floguy at gmail.com (floguy at gmail.com)
Date: 30 Sep 2006 11:55:57 -0700
Subject: Native MP3 Decoder?
Message-ID: <1159642557.521873.32650@m7g2000cwm.googlegroups.com>

I've been working on a simple cross-platform alarm clock application in
Python.  I took the time to learn wxPython for the frontend, and
figured there would be some backend for decoding mp3s to play at alarm
time.  So far, I have found 3 viable options.

1) pyMedia, which works great, but only works on Windows XP and Linux,
and not MacOSX
2) pyGame, which seems to lack the needed SDL_mixer support for
pygame.music
3) wx.MediaCtrl, which supposedly works on Windows and MacOSX, but not
Linux

So, I began to look for a pure Python MP3 decoder.  To my surprise,
there was not one implementation to be found.  Is Python too slow for a
pure Python MP3 decoder?  I would like to help in getting something
like this started.  Unfortunately, I have almost no knowledge of the
underlying MP3 algorithm. I know that there is a MP3 decoder written in
pure Java, called javazoom, which could be drawn from heavily.

I have begun taking that code and porting it to Python, but what I
really need is an someone who is experienced who can help me out with
some of the implementation details.

If anyone knows of another project like this, an alternative that I
haven't found yet, or has experience in mp3 decoding, please respond
with your thoughts.



From ldo at geek-central.gen.new_zealand  Mon Sep 25 22:57:56 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 14:57:56 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehgrdc.loa.jon+usenet@snowy.squish.net>
Message-ID: <efa4tq$lgf$2@lust.ihug.co.nz>

In message <slrnehgrdc.loa.jon+usenet at snowy.squish.net>, Jon Ribbens wrote:

> In article <ef9nib$snj$1 at lust.ihug.co.nz>, Lawrence D'Oliveiro wrote:
>> You're proposing two separate functions:
>> 
>>     1) quoting of non-wildcard specials
>>     2) quoting of wildcard specials
> 
> Lawrence, you're wrong...

Did I misunderstand what Sybren Stuvel was suggesting?


From pavlovevidence at gmail.com  Sat Sep  2 00:33:10 2006
From: pavlovevidence at gmail.com (Carl Banks)
Date: 1 Sep 2006 21:33:10 -0700
Subject: Using eval with substitutions
References: <1157022920.299174.22860@m73g2000cwd.googlegroups.com>
Message-ID: <1157171590.425375.157380@e3g2000cwe.googlegroups.com>

abhishek at ocf.berkeley.edu wrote:
> >>> a,b=3,4
> >>> x="a+b"
> >>> eval(x)
> 7
> >>> y="x+a"
>
> Now I want to evaluate y by substituting for the evaluated value of x.
> eval(y) will try to add "a+b" to 3 and return an error. I could do
> this,
> >>> eval(y.replace("x",str(eval(x))))
> 10
>
> but this becomes unwieldy if I have
> >>> w="y*b"
> and so on, because the replacements have to be done in exactly the
> right order. Is there a better way?

Careful.  Here be dragons.

There are two legitimate uses for eval and exec: A. deliberately giving
the user the power to run arbitrary Python code, and B. evaluating
expressions constructed within the program using only trusted and
carefully verified input.  Make sure your use case is one of these.

Anyways, although what you want to do is even more error prone and
dangerous than simple uses of eval, it can be done.  The thing to do is
to get your list of active symbol definitions into some kind of dict;
for example:

x = "a+b"
y = "x+b"
exprs = { "x": x, "y": y }

Then, if you want to evaluate y, you recursively expand any variables
you find within it. For example:

def expand_sym(sym):
    expr = exprs[sym]
    for subsym in exprs:
        if subsym in expr:
            subexpr = expand_sym(subsym)
            expr = expr.replace(subsym,"(%s)" % subexpr)
    return expr

Then you can eval the expanded expression:

eval(expand_sym("y"))


However, this is just a big potentially dangerous hack.  It's probably
ok for a little calculator you intend only for personal use, but
anything more I highly recommend your script parses the expression and
does symbolic expansion itself, without relying on eval.  That,
however, is quite hard.


Carl Banks



From gdamjan at gmail.com  Mon Sep 11 10:15:05 2006
From: gdamjan at gmail.com (Damjan)
Date: Mon, 11 Sep 2006 16:15:05 +0200
Subject: get the en of a program running in background
References: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>
	<1157924568.562057.317380@e3g2000cwe.googlegroups.com>
	<1157977548.323143.57380@e3g2000cwe.googlegroups.com>
Message-ID: <45056ee1$0$75029$14726298@news.sunsite.dk>


> It works when a click on a button launches a program P.
> Now, I want that a click on another button launches another program P'
> 
> In this case there is only one signal for two events : the end of P and
> the end of P'.
> How can distinct the two cases.

Remember the PIDs of the forked procesess and in your signal handler use
os.wait() to see which one has died. 
BTW os.wait() can work in non-blocking mode .


-- 
damjan


From toby at tobiah.org  Wed Sep 27 14:42:14 2006
From: toby at tobiah.org (tobiah)
Date: Wed, 27 Sep 2006 11:42:14 -0700
Subject: Surprise using the 'is' operator
In-Reply-To: <mailman.813.1159377925.10491.python-list@python.org>
References: <mailman.746.1159307893.10491.python-list@python.org>	<451A9824.6040106@tobiah.org>
	<mailman.813.1159377925.10491.python-list@python.org>
Message-ID: <451AC606.10309@tobiah.org>


>> I don't pretend to understand the reasons for all of this,
>> but if it is possible to use the same integer object whenever
>> it is referenced, then why should there be a limit on range?
> 
> Preallocating all the 4 billion 4-byte ints would overfill the memory of 
> most machines ;-)

Sure, I just meant that once a given integer was used,
it should be referenced the next time that value is
required.  As this thread exposed however, there is
a trade off for lookup time.

-- 
Posted via a free Usenet account from http://www.teranews.com



From paddy3118 at netscape.net  Sat Sep 23 01:03:27 2006
From: paddy3118 at netscape.net (Paddy)
Date: 22 Sep 2006 22:03:27 -0700
Subject: How to close the DOS Shell when starting a python script
In-Reply-To: <1158986228.279870.131610@i3g2000cwc.googlegroups.com>
References: <1158986228.279870.131610@i3g2000cwc.googlegroups.com>
Message-ID: <1158987807.349057.217150@e3g2000cwe.googlegroups.com>


m.errami at gmail.com wrote:
> Hello all.
> I know the question will seem stupid but googling it gives me only
> stuff I don't care about.
> So the question is the following:
> When I start a python script containing a wxApp under windows XP, I
> double click , my program opens and a background DOS shell also opens.
> Is there any way to prevent the DOS from opening?
> What is weird is that when I create a freezed version (an executable),
> then the DOS shell doens't open anymore.
> Any clues?
> Thanks for your help
> M.E.

Rename the .py file with extension .pyw.
- Paddy.



From johnjsal at NOSPAMgmail.com  Thu Sep 28 11:45:39 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Thu, 28 Sep 2006 15:45:39 GMT
Subject: best way to get data into a new instance?
In-Reply-To: <j%QSg.44$1n3.417@news.tufts.edu>
References: <j%QSg.44$1n3.417@news.tufts.edu>
Message-ID: <D6SSg.46$1n3.519@news.tufts.edu>

John Salerno wrote:
> Let's pretend I'm creating an Employee class, which I will later 
> subclass for more specific jobs. Each instance will have stuff like a 
> name, title, degrees held, etc. etc.
> 
> So I'm wondering, is the best way to get all this information into the 
> object to just have a really long __init__ method that takes each argument?
> 
> Does a question like this depend on how the class will be used? I'm 
> trying to construct it in a way that is independent of, say, the GUI 
> interface that will be used, but I can't help but think that if all the 
> data is entered into a GUI, then passed programmatically to the class, 
> then it's no big deal because it happens behind the scenes. But if, for 
> instance, someone manually created a new instance, they would have a ton 
> of arguments to type in each time. Granted, even with the GUI they are 
> basically typing in arguments, but in the manual case you'd have to type 
> in the call to the class, the parentheses, commas, quotes around the 
> strings, etc. (But still, I'm trying not to let a specific interface 
> influence the construction of what should probably be a completely 
> independent class implementation.)
> 
> Thanks.

Thanks again guys! I guess I'm letting all these little "getting 
started" questions hang me up too much. I should just start coding like 
Fredrik suggested ages ago and find out the bad design ideas for myself. :)

Right now I started messing around with designing the GUI that will be 
used to input the data. It's much easier, I guess because it's just a 
matter of *doing* and not really figuring things out, but that's also 
why it gets tedious rather quickly!


From jon+usenet at unequivocal.co.uk  Tue Sep 26 09:25:07 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 13:25:07 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
	<slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
	<ef95kk$oan$1@news.albasani.net>
	<mailman.676.1159276577.10491.python-list@python.org>
Message-ID: <slrnehiah5.9o0.jon+usenet@snowy.squish.net>

In article <mailman.676.1159276577.10491.python-list at python.org>, Fredrik Lundh wrote:
> the same documentation tells people what function to use if they
> want to quote *every-thing* that might need to be quoted, so if
> people did actually understand everything that was written in a
> reasonably clear way, this thread wouldn't even exist.

The fact that you don't understand that that's not true is the reason
you've been getting into such a muddle in this thread.


From deets at nospam.web.de  Fri Sep  8 14:36:07 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 08 Sep 2006 20:36:07 +0200
Subject: cx_Oracle question
In-Reply-To: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>
References: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>
Message-ID: <4mdrgoF5e5umU1@uni-berlin.de>

Richard Schulman schrieb:
> I'm having trouble getting started using Python's cx_Oracle binding to
> Oracle XE. In forthcoming programs, I need to set variables within sql
> statements based on values read in from flat files. But I don't seem
> to be able to get even the following stripped-down test program to
> work:
> 
> import cx_Oracle
> connection = cx_Oracle.connect("username", "password")
> cursor = connection.cursor()
> 
> arg_1 = 2 #later, arg_1, arg_2, etc. will be read in files
> 
> cursor.execute("""select mean_eng_txt from mean
>                   where mean_id=:arg_1""",arg_1)
> for row in cursor.fetchone():
>     print row
> cursor.close()
> connection.close()
> 
> The program above produces the following error message:
> 
> C:\pythonapps>python oracle_test.py
> Traceback (most recent call last):
>    File "oracle_test.py", line 7, in ?
>       cursor.execute('select mean_eng_txt from mean where
>       mean_id=:arg_1',arg_1)
> TypeError: expecting a dictionary, sequence or keyword args
> 
> What do I need to do to get this sort of program working?

Do what it tells you to do: use a dictionary as parameters or 
keyword-args. Not sure what they mean by a sequence though.


So it should work like this:


cursor.execute("""select mean_eng_txt from mean
                   where mean_id=:arg_1""",{arg_1=arg_1})

Diez


From deyke at comcast.net  Sun Sep 17 20:04:31 2006
From: deyke at comcast.net (Dieter Deyke)
Date: Sun, 17 Sep 2006 18:04:31 -0600
Subject: Hardlinks on NTFS
References: <mailman.208.1158512901.10491.python-list@python.org>
Message-ID: <u3baqujjk.fsf@comcast.net>

Wildemar Wildenburger <wildemar at freakmail.de> writes:

> Hi :)
>
> I'm thinking of letting my program create hardlinks (or symlinks). I
> know python allows doing this for ext, reiser and the like, but
> apparently not for ntfs systems.
> Is there any package out there that lets me create links in a platform
> independent way?
>
> bye
> wildemar

This is my solution:

import os

def CreateHardLink(src, dst):
    import ctypes
    if not ctypes.windll.kernel32.CreateHardLinkA(dst, src, 0): raise OSError

os.link = CreateHardLink

--
Dieter Deyke
mailto:deyke at comcast.net mailto:deyke at gmx.net mailto:deyke at yahoo.com
Vs lbh pna ernq guvf, lbh unir jnl gbb zhpu gvzr.


From rogue_pedro at yahoo.com  Sat Sep  2 19:49:16 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 2 Sep 2006 16:49:16 -0700
Subject: CONSTRUCT -
In-Reply-To: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
Message-ID: <1157240956.074166.131100@m79g2000cwm.googlegroups.com>

lazaridis_com wrote:
> I would like to fulfill the following task:
>
> The construct:
>
> if __name__ == '__main__':
>
> should be changed to something like:
>
> if identifier.name == '__main__':
>
> The term "identifier" should be selected based on the meaning of the
> __double-underscore-enclosure__ of the entities.
>
> -
>
> What I would need to know is:
>
> a) what would be the correct term for "identifier"?
>
> b) is there a standard way to implement such an access mechanism in an
> generic way?
>
> c) is there an advanced mechanism available, which would allow to
> implement a prefix (e.g. %name)
>
> -
>
> Context:
> http://case.lazaridis.com/wiki/Lang
> http://case.lazaridis.com/ticket/6

I'm sorry, you post makes very little sense.  If all you want to do is
implement a less "ugly" verision of "if __name__ == '__main__':", a
quick search on google should turn up several ways.

Peace,
~Simon



From insyte at gmail.com  Mon Sep 18 15:49:57 2006
From: insyte at gmail.com (insyte at gmail.com)
Date: 18 Sep 2006 12:49:57 -0700
Subject: why a main() function?
In-Reply-To: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
Message-ID: <1158608997.623412.254150@h48g2000cwc.googlegroups.com>


beliavsky at aol.com wrote:
> I think I read a suggestion somewhere to wrap the code where a Python
> script starts in a main() function, so one has
>
> def main():
>     print "hi"
>
> main()
>
> instead of
>
> print "hi"
>
> What are the advantages of doing this?


I'm sure there are other reasons, but for me the most important is that
you can import your code into the interpreter and poke at it from there
without executing the script.  Also, of course, you can re-use your
code as a module in another program.

-Ben



From domulus at googlemail.com  Sun Sep 24 16:34:01 2006
From: domulus at googlemail.com (=?ISO-8859-1?Q?Dominik_M=FCller?=)
Date: Sun, 24 Sep 2006 22:34:01 +0200
Subject: installation of python-dev
Message-ID: <4e4935ac0609241334p617d8fabq9f6ce1e30883ee38@mail.gmail.com>

Hi !

I am running Python2.4.3; I need to install Python-dev (or does anybody know
an easier way to get distutils.core ? that's what I actually need...). All
the versions of python-dev I can find don't match. I get always error
message

"error: Failed dependencies:
        python = 2.4 is needed by python-devel-2.4-14.i586"

Any suggestions ?

Dominik
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From bdesth.quelquechose at free.quelquepart.fr  Thu Sep 28 15:14:17 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 21:14:17 +0200
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <roy-491DC0.20514927092006@reader2.panix.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
	<mailman.845.1159401951.10491.python-list@python.org>
	<roy-491DC0.20514927092006@reader2.panix.com>
Message-ID: <451c1c56$0$32693$626a54ce@news.free.fr>

Roy Smith a ?crit :
> In article <mailman.845.1159401951.10491.python-list at python.org>,
>  "Carl J. Van Arsdall" <cvanarsdall at mvista.com> wrote:
> 
> 
>>>Things like decorators and metaclasses certainly add power, but they add 
>>>complexity too.  It's no longer a simple language.
>>>  
>>
>>Well, I think a simple language is a language that makes the simple 
>>things simple and some of the complex things simple.  But I also like a 
>>language where, if I need it, I can tap into some raw power and do that 
>>really wild stuff.  So its simple to use if that's all you need yet 
>>offers the complexity to get things done that a purely "simple" language 
>>can't do.  I'd say its as simple as you want it to be :)
> 
> 
> The problem is, if the complex features are there, people will use them.  
> On any large project, there will always be some people who revel in using 
> every obscure feature of a language.  That forces everybody else on the 
> team (and all future members of the team) to know (or learn) those features 
> in order to be able to use and maintain the code base.

The fact is that these "complex" features allow to *greatly* simplify 
things, specially on "large" projects - that may not be that large after 
all. Now wrt/ being "forced" to learn these features, it's certainly 
more rewarding and less difficult than having to grasp Javaish monster 
hierarchies and overcomplicated frameworks where you have to define 
interfaces and classes for something as dumb as a callback function.

Believe me, I've seen Python code that was really quite complex (and 
hard to maintain) *because* it didn't use the "obscure" features of the 
language. "When the only tool you have is a hammer..."


From sjmachin at lexicon.net  Fri Sep  1 04:34:37 2006
From: sjmachin at lexicon.net (John Machin)
Date: 1 Sep 2006 01:34:37 -0700
Subject: pysqlite - simple problem
In-Reply-To: <mailman.10234.1157098508.27775.python-list@python.org>
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>
	<1157096859.197049.120950@i42g2000cwa.googlegroups.com>
	<mailman.10234.1157098508.27775.python-list@python.org>
Message-ID: <1157099677.092678.124910@p79g2000cwp.googlegroups.com>


Fredrik Lundh wrote:
> John Machin wrote:
> >> So this has to be something stupidly simple... but for the life of me I
> >> can't see it.
> >
> > With the '?' paramstyle, the 2nd arg to cursor.execute() should be a
> > *sequence* (typically a tuple) of the values that you are inserting.
> >
> > Tty this:
> > cur.execute("INSERT INTO foo (id) VALUES (?)", (num, ))
> >
> > This is standard Python DBAPI stuff - you would probably get a similar
> > response from other gadgets e.g. mySQLdb -- IOW it's not specific to
> > pysqlite.
>
> that mistake gives an entirely different error message, at least under 2.2.0
> (which is the version shipped with 2.5):
>

You're right. I didn't spot that the OP may be using an antique:

    File "/usr/lib/python2.4/site-packages/sqlite/main.py"

So the advice has to be augmented:
1. Update to latest pysqlite2 (which BTW is a later version that that
shipped with Python 2.5, just to add some confusion)
2. Pass values as a sequence

Cheers,
John



From btowle at carnegielearning.com  Wed Sep 13 09:44:40 2006
From: btowle at carnegielearning.com (Brendon Towle)
Date: Wed, 13 Sep 2006 09:44:40 -0400
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <mailman.1.1158123703.10490.python-list@python.org>
References: <mailman.1.1158123703.10490.python-list@python.org>
Message-ID: <19712C4E-C7E2-4A7F-BE2B-8407686B7C6C@carnegielearning.com>

On 13 Sep 2006, at 1:01 AM, python-list-request at python.org wrote:

> Date: 12 Sep 2006 20:17:47 -0700
> From: Paul Rubin <http://phr.cx at NOSPAM.invalid>
> Subject: Re: Random Drawing Simulation -- performance issue
> To: python-list at python.org
>
> "Travis E. Oliphant" <oliphant.travis at ieee.org> writes:
>>> I need to simulate scenarios like the following: "You have a deck of
>>> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,
>>> replace it, and repeat N times."
>>>
>> Thinking about the problem as drawing sample froms a discrete
>> distribution defined by the population might help.
>
> Is there some important reason you want to do this as a simulation?
> And is the real problem more complicated?  If you draw from the
> distribution 100,000 times with replacement and sum the results, per
> the Central Limit Theorem you'll get something very close to a normal
> distribution whose parameters you can determine analytically.  There
> is probably also some statistics formula to find the precise error.
> So you can replace the 100,000 draws with a single draw.

The real problem is not substantially more complicated. (The real  
code is, because it's embedded in a bunch of other stuff, but that's  
not the point.)

I guess the essential reason that I want to do it as a simulation,  
and not as a statistics formula, is that I'd like the code to be  
readable (and modifiable) by a programmer who doesn't have a  
statistics background. I could dredge up enough of my college stats  
to do as you suggest (although I might not enjoy it), but I don't  
think I want to make that a requirement.

On the other hand (quote somewhat snipped):

> Date: Tue, 12 Sep 2006 22:46:04 -0500
> From: Robert Kern <robert.kern at gmail.com>
> Subject: Re: Random Drawing Simulation -- performance issue
> To: python-list at python.org
>
> Along the lines of what you're trying to get at, the problem that  
> the OP is
> describing is one of sampling from a multinomial distribution.
>
> numpy has a function that will do the sampling for you:
>
> In [4]: numpy.random.multinomial?
> Docstring:
>      Multinomial distribution.
>
>      multinomial(n, pvals, size=None) -> random values
>
>      pvals is a sequence of probabilities that should sum to 1  
> (however, the
>      last element is always assumed to account for the remaining  
> probability
>      as long as sum(pvals[:-1]) <= 1).

Here, I'm torn. I do want the code to be accessible to non-stats  
people, but this just might do the trick. Must ponder.

Thanks, everyone, for your helpful suggestions!

B.

-- 
Brendon Towle, PhD
Cognitive Scientist
+1-412-690-2442x127
Carnegie Learning, Inc.
The Cognitive Tutor Company ?
Helping over 375,000 students in 1000 school districts succeed in math.




From gh at ghaering.de  Mon Sep 11 12:12:59 2006
From: gh at ghaering.de (=?ISO-8859-1?Q?Gerhard_H=E4ring?=)
Date: Mon, 11 Sep 2006 18:12:59 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157785232.730286.318470@b28g2000cwb.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>
	<1157785232.730286.318470@b28g2000cwb.googlegroups.com>
Message-ID: <ee41mv$mlo$1@sea.gmane.org>

Kay Schluehr wrote:
> skip at pobox.com wrote:
> 
>> I wouldn't be at all surprised if the pysqlite author operated under that
>> assumption.  That the Python developers didn't pick up on the issue is not
>> surprising.  I'm not sure how many of them are (py)sqlite users, probably
>> relatively few.
>>
>> Skip
> 
> Who has reviewed sqlite/pysqlite after all? 

pysqlite was actually reviewed by several Python core developers before 
becoming a part of the Python standard library, most prominently Neil 
Norwitz and Anthony Baxter.

> Reading the passage in the
> sqlite FAQ I can hardly believe that passing errors silently and
> coercing everything to string when it fails to be coerced to INTEGER
> although INTEGER was an invariant declared in the create command is on
> par with Pythons design philosophy. [...]

Unfortunately, third-party library authors don't first check with 
Python's design philosophy in case their software will be wrapped as a 
Python module ;-)

I did my best to combine both SQLite's and Python's type system though, 
including a discussion with pysqlite 1.x users before the grand rewrite 
for version 2, which is the one that ended up in the Python standard 
library now.

> In other cases doctoral dissertations are written about whether a
> keyword or some punctuation shall be used for decorator syntax and in
> this case everything must be rushed into the code base of the
> standard library?

There was no rush at all.

-- Gerhard



From johannes at axandra.com  Mon Sep 25 09:11:37 2006
From: johannes at axandra.com (johannes at axandra.com)
Date: 25 Sep 2006 06:11:37 -0700
Subject: Job offer python programmer
Message-ID: <1159189896.956716.84320@k70g2000cwa.googlegroups.com>

Hello,

We're looking for a software developer Python/PHP/Ajax/MySQL for web
applications (full time job). Maybe someone in this group might be
interested in this job.

Further information can be found here:

About the job: http://www.Axandra.de/python
About us: http://www.Axandra.de/company

Best regards,

Johannes Selbach
Axandra GmbH, Ruhrstra?e 6, 56410 Montabaur, Germany
http://www.Axandra.de - http://www.Axandra.com



From john106henry at hotmail.com  Wed Sep 13 16:10:01 2006
From: john106henry at hotmail.com (John Henry)
Date: 13 Sep 2006 13:10:01 -0700
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <mailman.45.1158171218.10491.python-list@python.org>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
	<mailman.45.1158171218.10491.python-list@python.org>
Message-ID: <1158178201.236149.261120@i3g2000cwc.googlegroups.com>

Thanks for the reply, both to Laszlo and Steve.

Okay, I understand what you're saying.

But what if I need to make a "pointer" to a simple variable.

For instance, in C:

   int i=1
   int *j=&i

   *j = 2
   print i

and you get 2 printed.

In Python,

   i=1
   j=i
   j=2
   print i

and you get 1 printed.

So, if I understand you correctly, I must make the reference to a more
elaborate representation.  Like:

   i=[1,]
   j=i
   j[0]=2
   print i

in order to get 2 printed.

Correct?


Steve Holden wrote:
> John Henry wrote:
> > Hi list,
> >
> > Just to make sure I understand this.
> >
> > Since there is no "pointer" type in Python, I like to know how I do
> > that.
> >
> > For instance, if I do:
> >
> >    ...some_huge_list is a huge list...
> >    some_huge_list[0]=1
> >    aref = some_huge_list
> >    aref[0]=0
> >    print some_huge_list[0]
> >
> > we know that the answere will be 0.  In this case, aref is really a
> > reference.
> >
> > But what if the right hand side is a simple variable (say an int)?  Can
> > I "reference" it somehow?  Should I assume that:
> >
> >    aref = _any_type_other_than_simple_one
> >
> > be a reference, and not a copy?
> >
> Yes. Attributes are always object references. The assignment is actually
> the binding of a specific object to a name in some namespace, (r to an
> element of a sequence or other container object.
>
> This applies *whatever* the type of the RHS experession: the expression
> is evaluated to yield an object, and a reference to the object is stored
> in the name or container element.
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden



From jdemoor at gmail.com  Fri Sep  1 10:28:38 2006
From: jdemoor at gmail.com (jdemoor at gmail.com)
Date: 1 Sep 2006 07:28:38 -0700
Subject: Question about import and namespace
In-Reply-To: <pan.2006.09.01.13.40.47.918922@gmx.net>
References: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>
	<ed96t9$l81$03$1@news.t-online.com>
	<1157115719.609101.73660@i42g2000cwa.googlegroups.com>
	<pan.2006.09.01.13.40.47.918922@gmx.net>
Message-ID: <1157120918.098340.181110@h48g2000cwc.googlegroups.com>

Ok, thanks again. That was helpful.



From felipe.lessa at gmail.com  Sun Sep 10 19:48:18 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Sun, 10 Sep 2006 20:48:18 -0300
Subject: ANN: Pocoo (bulletin board software) 0.1 beta released
In-Reply-To: <7x1wqjjoqz.fsf@ruckus.brouhaha.com>
References: <ee23mt$hd8$2@news.albasani.net>
	<7x1wqjjoqz.fsf@ruckus.brouhaha.com>
Message-ID: <c2701f5c0609101648h47d00706j41f8be1e5d9cffdb@mail.gmail.com>

10 Sep 2006 16:17:08 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid>:
> So, I think it's not worth thinking about writing yet another BBS
> unless it can handle a Slashdot-sized load on a commodity PC.

Python is slow. Psyco helps, but you should use C instead.

And yes, I am kidding =)

-- 
Felipe.


From steve at REMOVEME.cybersource.com.au  Thu Sep 14 21:25:09 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Fri, 15 Sep 2006 11:25:09 +1000
Subject: Statistical distribution of object size
References: <1158188592.589956.29690@b28g2000cwb.googlegroups.com>
Message-ID: <pan.2006.09.15.01.25.05.306951@REMOVEME.cybersource.com.au>

On Wed, 13 Sep 2006 16:03:12 -0700, dbpokorny at gmail.com wrote:

> Hi,
> 
> In a typical heavy-use python application (say running Zope for
> dukehealth.org) what is the (statistical) distribution of the the size
> of objects? (i.e. start up server, stop time when it has been under
> load for a few hours, and put each object into a bucket marked with the
> number of bytes it is allocated, and maybe labeled with object type,
> say dict, list, other). Does anyone know of any research on this?
> 
> I would do this myself, but my website only has one user...

How do you get the memory size of each object?




-- 
Steven D'Aprano 



From fred at osuosl.org  Mon Sep 11 14:08:32 2006
From: fred at osuosl.org (Frederic Wenzel)
Date: Mon, 11 Sep 2006 11:08:32 -0700
Subject: pyserial problem: script stops reading
In-Reply-To: <5a8943c0609091004l318c61d6m2d69fcedcd8380ff@mail.gmail.com>
References: <5a8943c0609081824q18d70effu10b2252601bcad81@mail.gmail.com>
	<5a8943c0609081825r203d08b5xa4a6225f2d56c337@mail.gmail.com>
	<020101c6d3eb$da564520$03000080@hendrik>
	<5a8943c0609091004l318c61d6m2d69fcedcd8380ff@mail.gmail.com>
Message-ID: <5a8943c0609111108j5a364269o38e369eefff826f0@mail.gmail.com>

On 9/9/06, Frederic Wenzel <freeed at gmail.com> wrote:
> On 9/9/06, Hendrik van Rooyen <mail at microcorp.co.za> wrote:
> > | I wrote a script on Linux that uses pyserial to read status messages
> > | from a serial line using readlines(). For now, it just displays what
> > | it gets on stdout:
> > | (...)
> > | ser = serial.Serial(port=1,
> > |                                  baudrate=1200,
> > |                                  rtscts=1,
> > |
> > | If the script does not time out there, I am not sure what else it is
> > | doing. It seems to be in a wait state it does not get out of.

When it stopped working again (unfortunately) I pressed ctrl c and got
the following output?

14:53 | 0008 | 02 |   | 5  |Rack Abs.|  -  | --752
14:53 | 0005 | 02 |   | 2  |Rack Abs.|  -  | 00752
14:53 | 0008 | 02 |Traceback (most recent call last):
  File "serialhandler.py", line 34, in ?
    lines = sh.readLines()
  File "serialhandler.py", line 29, in readLines
    return self.ser.readlines()
  File "/usr/lib/python2.3/site-packages/serial/serialutil.py", line
78, in readlines
    line = self.readline(eol=eol)
  File "/usr/lib/python2.3/site-packages/serial/serialutil.py", line
60, in readline
    c = self.read(1)
  File "/usr/lib/python2.3/site-packages/serial/serialposix.py", line
269, in read
    ready,_,_ = select.select([self.fd],[],[], self._timeout)
KeyboardInterrupt


Apparently this is the place where it gets stuck. The select.select
line does not return, not even for a timeout.

Fred


From wulabs at gmail.com  Fri Sep 22 02:47:52 2006
From: wulabs at gmail.com (Jack Wu)
Date: Thu, 21 Sep 2006 23:47:52 -0700
Subject: Help with JPEG support with PIL 1.1.5 and OSX
Message-ID: <234081550609212347y21e52fd2ma01ab279b88c0ffb@mail.gmail.com>

Hi

I've spent a good majority of my day trying to figure out how to have
PIL 1.1.5 working on my OSX 10.3.9_PPC machine.  I'm still stuck and I
have not gotten anywhere.  Could somebody please help me...

I've scoured all the documentation, google, and mailing lists to no
avail.  I believe the problem may lay in a jpeglib problem with OSX
10.3.9, or a python paths problem.

Here is info on my system (note this is not the default Python version
that comes with OSX):
Python 2.4.1 (#2, Mar 31 2005, 00:05:10)
[GCC 3.3 20030304 (Apple Computer, Inc. build 1666)] on darwin

This email is really long, I've seperated the sections with 3-4 lines
of spacing.





Here is my own PIL installation summary, I followed directions in
README.  I am using the most recent install package from the PIL
website.  I also tried using the default JPEG_ROOT=None and JPEG_ROOT
= "sw/lib", where I was able to locate the jpeglib files.
---------------------------------------------------------------------------------------
running install
running build
running build_py
running build_ext
--------------------------------------------------------------------
PIL 1.1.5 BUILD SUMMARY
--------------------------------------------------------------------
version       1.1.5
platform      darwin 2.4.1 (#2, Mar 31 2005, 00:05:10)
              [GCC 3.3 20030304 (Apple Computer, Inc. build 1666)]
--------------------------------------------------------------------
*** TKINTER support not available
--- JPEG support ok
--- ZLIB (PNG/ZIP) support ok
*** FREETYPE2 support not available
--------------------------------------------------------------------
To add a missing option, make sure you have the required
library, and set the corresponding ROOT variable in the
setup.py script.

To check the build, run the selftest.py script.
running build_scripts
running install_lib
running install_scripts
changing mode of
/Library/Frameworks/Python.framework/Versions/2.4/bin/pilconvert.py to
755
changing mode of
/Library/Frameworks/Python.framework/Versions/2.4/bin/pildriver.py to
755
changing mode of
/Library/Frameworks/Python.framework/Versions/2.4/bin/pilfile.py to 755
changing mode of
/Library/Frameworks/Python.framework/Versions/2.4/bin/pilfont.py to 755
changing mode of
/Library/Frameworks/Python.framework/Versions/2.4/bin/pilprint.py to
755
creating
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packag
es/PIL.pth
---------------------------------------------------------------------------------------
This file was 212KB.





I tried running the self-test and this is my output:
*****************************************************************
Failure in example: _info(Image.open("Images/lena.jpg"))
from line #24 of selftest.testimage
Exception raised:
Traceback (most recent call last):
  File "./doctest.py", line 499, in _run_examples_inner
    exec compile(source, "<string>", "single") in globs
  File "<string>", line 1, in ?
  File "./selftest.py", line 21, in _info
    im.load()
  File "PIL/ImageFile.py", line 180, in load
    d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
  File "PIL/Image.py", line 328, in _getdecoder
    raise IOError("decoder %s not available" % decoder_name)
IOError: decoder jpeg not available
1 items had failures:
   1 of  55 in selftest.testimage
***Test Failed*** 1 failures.
*** 1 tests of 55 failed.







I ran "$python -vv -c "import _imaging"" and this was the important output:
------------------------------------------------------------------------
import _imaging # dynamically loaded from
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/PIL/_imaging.so
------------------------------------------------------------------------
This file was 962KB.



The _imaging.so file mentioned above (962KB) was not actually the same
one that I compiled earlier (212KB).  So I figured there must be some
problem with my python path.  I copied the newly compiled version into
the python PIL directory above and tried again.  Same problem on self
test.




I then tried the Darwin ports py-pil (http://py-pil.darwinports.com/).
 This is the output that I got when installing:
------------------------------------------------------------------------
sudo port install py-pil
--->  Fetching freetype
--->  Attempting to fetch freetype-2.1.10.tar.bz2 from
http://download.savannah.gnu.org/releases/freetype/
--->  Verifying checksum(s) for freetype
--->  Extracting freetype
--->  Applying patches to freetype
--->  Configuring freetype
--->  Building freetype with target all
--->  Staging freetype into destroot
--->  Packaging tgz archive for freetype 2.1.10_1
--->  Installing freetype 2.1.10_1
--->  Activating freetype 2.1.10_1
--->  Cleaning freetype
--->  Fetching jpeg
--->  Attempting to fetch jpegsrc.v6b.tar.gz from http://www.ijg.org/files
--->  Verifying checksum(s) for jpeg
--->  Extracting jpeg
--->  Applying patches to jpeg
--->  Configuring jpeg
--->  Building jpeg with target all
--->  Staging jpeg into destroot
--->  Packaging tgz archive for jpeg 6b_1
--->  Installing jpeg 6b_1
--->  Activating jpeg 6b_1
--->  Cleaning jpeg
--->  Fetching py-pil
--->  Attempting to fetch Imaging-1.1.5.tar.gz from http://effbot.org/downloads/
--->  Verifying checksum(s) for py-pil
--->  Extracting py-pil
--->  Applying patches to py-pil
--->  Configuring py-pil
--->  Building py-pil with target build
--->  Staging py-pil into destroot
--->  Packaging tgz archive for py-pil 1.1.5_1
--->  Installing py-pil 1.1.5_1
--->  Activating py-pil 1.1.5_1
--->  Cleaning py-pil
------------------------------------------------------------------------
This created a _imaging.so file which was 684KB.



I copied this newly created _imaging.so file into my appropriate
python PIL directory and ran self-test again, and it still had the
same error.





Another test I did was to remove _imaging.so completely from the PIL
directory in Python.  When I ran (python -vv -c "import _imaging"),
this was the output:
------------------------------------------------------------------------
Traceback (most recent call last):
  File "<string>", line 1, in ?
ImportError: No module named _imaging
------------------------------------------------------------------------
But self_test.py still had the same output as before (JPEG decode error).




I also downloaded jpeglib(jpeg-6b) and built it myself (succesfully),
and passed the lib directory for JPEG_ROOT in the PIL installer, but
that didn't have any different self-test results.

It is also very strange that i can set the JPEG_ROOT to be anything,
even something ficticious and the installer will report 'no support
errors' for JPEG.




Another strange thing is a discprency in JPEG libraries, py-pil seems
to use JPEG while PIL seems to reference only LIBJPEG.




Running a search on my HD for _imaging.so turns up 4 sources:
1) /opt/local/lib/python2.4/site-package/PIL/_imaging.so (684KB - this
was generated by the py-pil install)
2) /opt/local/var/db/dports/software/py-pil/1.1.5_1/opt/lcoal/lib/python2.4/site-packages/PIL/_imagin.so
(684KB - this was generated by the py-pil install)
3) Desktop/Imaging-1.1.5/PIL/_imaging.so (212KB - this was generated
by the PIL Imaging isntall)
4) Desktop/Imaging-1.1.5/build/lib.darwin-7.9.0-Power_macintosh-2.4/_imaging.so
(212KB - this was generated by the PIL Imaging install)



My goal is to get the self-test working properly.  Somebody please help!
-- 
Jack Wu


From n.estner at gmx.de  Fri Sep 22 14:29:30 2006
From: n.estner at gmx.de (nikie)
Date: 22 Sep 2006 11:29:30 -0700
Subject: py2exe compression not working with Python 2.5
References: <1158945839.871351.39780@k70g2000cwa.googlegroups.com>
	<mailman.474.1158949051.10491.python-list@python.org>
Message-ID: <1158949770.092778.32030@i3g2000cwc.googlegroups.com>

Thomas Heller wrote:

> nikie schrieb:
> > When I try to compress the output of py2exe like this:
> >
> >   from distutils.core import setup
> >   import py2exe
> >
> >   setup(console=['hello.py'], options={"py2exe": {"compressed": 1}})
> >
> > I get strange error messages:
> >
> > Adding zlib.pyd to C:\tests\CanControllerTest\New Folder
> > (2)\dist\library.zip
> > Traceback (most recent call last):
> >   File "setup.py", line 4, in <module>
> >     setup(console=['hello.py'], options={"py2exe": {"compressed": 1}})
> >   File "C:\Python25\lib\distutils\core.py", line 151, in setup
> >     dist.run_commands()
> >   File "C:\Python25\lib\distutils\dist.py", line 974, in run_commands
> >     self.run_command(cmd)
> >   File "C:\Python25\lib\distutils\dist.py", line 994, in run_command
> >     cmd_obj.run()
> >   File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 218,
> > in run
> >     self._run()
> >   File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 285,
> > in _run
> >     self.create_binaries(py_files, extensions, dlls)
> >   File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 591,
> > in create_
> > binaries
> >     bytes = zlib_file.read()
> > AttributeError: 'NoneType' object has no attribute 'read'
> >
> > This is a standard Python 2.5 installation. Doing the same thing with
> > 2.4 works like a charm.
> >
> > Did I miss anything?
> >
> Patches for this have been posted to the py2exe-users list.

Doh, should have looked there first...

Thanks a lot!



From ramasridhar.kasturi at gmail.com  Thu Sep 14 03:11:05 2006
From: ramasridhar.kasturi at gmail.com (sridhar)
Date: 14 Sep 2006 00:11:05 -0700
Subject: sending emails using python
In-Reply-To: <mailman.111.1157617795.5279.python-list@python.org>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
	<B51712964.236.7189.1@mx-extra>
	<mailman.111.1157617795.5279.python-list@python.org>
Message-ID: <1158217865.248875.189820@i42g2000cwa.googlegroups.com>


Tim Williams wrote:
> On 07/09/06, Sybren Stuvel <sybrenUSE at yourthirdtower.com.imagination> wrote:
> > sridhar enlightened us with:
> > > iam having user account on an exchangeserver.
> > > with that can i send an email using python?
> > >
> > > if iam using the following code iam getting error
> > >
> > > Traceback (most recent call last):
> > >   File
> > > "C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout\InitialMailExample.py",
> > > line 5, in ?
> > >     server = smtplib.SMTP("hstmsg002",25)
> > >   File "C:\Python24\lib\smtplib.py", line 244, in __init__
> > >     (code, msg) = self.connect(host, port)
> > >   File "C:\Python24\lib\smtplib.py", line 307, in connect
> > >     (code, msg) = self.getreply()
> > >   File "C:\Python24\lib\smtplib.py", line 351, in getreply
> > >     raise SMTPServerDisconnected("Connection unexpectedly closed")
> > > SMTPServerDisconnected: Connection unexpectedly closed
> >
> > Well that's useless. You could install a network sniffer
> > (http://www.ethereal.com/) and find out what's actually sent over the
> > network connection, and where things go wrong.
>
> Have you verified that you are allowed to use SMTP on this server ?
> Can you send email via it using outlook express or a similar POP3/IMAP
> mail client?
> 
> :)


yes , because iam having account on that server



From fredrik at pythonware.com  Thu Sep 28 13:26:08 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 19:26:08 +0200
Subject: help tranlating perl expressions
In-Reply-To: <5452284.reKt6RD0Uf@teancum>
References: <5452284.reKt6RD0Uf@teancum>
Message-ID: <efh0je$ae8$1@sea.gmane.org>

David Bear wrote:

 > I am trying to translate some perl code to python and I need some
 > advice on making fixed sized strings.

looks like you're reimplementing HMAC; there's no need to do that in 
Python, really, since it's part of the standard library:

     http://docs.python.org/lib/module-hmac.html

pass in hashlib.sha1 instead of the default, and you're done.

if you insist on doing it yourself, read on:

>  my $ipad = chr(0x36)x$blen;
>  my $opad = chr(0x5c)x$blen;
> 
> I don't know if I ever seen any way in python of created a fixed size
> string. Can anyone show me how to implement the same statements in python?

just remove all the junk, and use multiply instead of "x":

     ipad = chr(0x36) * blen
     opad = chr(0x5c) * blen

however, Python strings are not mutable, so to implement the rest of 
that algorithm, you probably want to use a list or array object instead. 
  the md5-example-4.py script on this page shows one way to do that:

     http://effbot.org/librarybook/md5.htm

to get a SHA-1 hmac, you have to replace "md5" with "sha".

</F>



From jaysherby at gmail.com  Sun Sep 17 11:21:29 2006
From: jaysherby at gmail.com (Jay)
Date: 17 Sep 2006 08:21:29 -0700
Subject: mp3 file length in time
In-Reply-To: <7xsliqjza7.fsf@ruckus.brouhaha.com>
References: <1158505736.188862.223640@h48g2000cwc.googlegroups.com>
	<7xsliqjza7.fsf@ruckus.brouhaha.com>
Message-ID: <1158506489.739543.27720@m7g2000cwm.googlegroups.com>

Any tips on how to do that?

Paul Rubin wrote:
> "Jay" <jaysherby at gmail.com> writes:
> > In python, I know there are a couple of modules for getting id3 info,
> > but what about the length of an mp3 file in time?  Is there a way to
> > aquire that info?  Most of my MP3s don't have id3 tags.  I don't care
> > for them.  But I need to use python to get their file lengths.  How?
>
> You have to count the frames.  Lots of mp3 files use variable bit
> rates, so you can't go by the file length.



From berthold at despammed.com  Thu Sep 21 08:57:43 2006
From: berthold at despammed.com (Berthold =?iso-8859-15?Q?H=F6llmann?=)
Date: Thu, 21 Sep 2006 14:57:43 +0200
Subject: Decorator cllass hides docstring from doctest?
Message-ID: <se3bal9y2g.fsf@pc047299.dhcp.germanlloyd.org>

Saving the following code to a file and running the code through
python does not give the expected error. disableling the "@decor" line
leads to the expected error message. Is this a bug or an overseen
feature?


--- snip dectest.py ---
class decor(object):
    def __init__(self, f):
        self.f = f
    def __call__(self, *args, **kw):
        return self.f(*args, **kw)

@decor
def f(a, b):
    """
    >>> f(1,2)
    False
    >>> f(2,2)
    False
    """
    return a == b

def _test():
    import doctest
    doctest.testmod()

if __name__ == "__main__":
    _test()
--- snip dectest.py ---

Our Python is:

Python 2.4.2 (#1, Dec  5 2005, 10:13:23) 
[GCC 3.3.5 20050117 (prerelease) (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.


Thanks
Berthold
-- 
                            __   Address:
                         G /  \ L Germanischer Lloyd
phone: +49-40-36149-7374 -+----+- Vorsetzen 35       P.O.Box 111606
fax  : +49-40-36149-7320   \__/   D-20459 Hamburg    D-20416 Hamburg



From steve at holdenweb.com  Sun Sep 17 10:48:59 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 17 Sep 2006 10:48:59 -0400
Subject: Python blogging software
In-Reply-To: <7xpsdvup0b.fsf@ruckus.brouhaha.com>
References: <1158132558.3622.29.camel@devilbox>	<mailman.7.1158132885.10491.python-list@python.org>	<1158160960.920246.107630@b28g2000cwb.googlegroups.com>	<mailman.50.1158182707.10491.python-list@python.org>	<1158183929.155925.6050@m73g2000cwd.googlegroups.com>	<mailman.194.1158464227.10491.python-list@python.org>
	<7xpsdvup0b.fsf@ruckus.brouhaha.com>
Message-ID: <eejn7d$bul$1@sea.gmane.org>

Paul Rubin wrote:
> "Eric S. Johansson" <esj at harvee.org> writes:
> 
>>a wise person you are.  I've often thought that most of the pages
>>generated by web frameworks (except for active pages) should be cached
>>once rendered.
> 
> 
> Fancy frameworks do use caching, but I think of that as a kludgy
> workaround for lousy performance of the framework itself.  A fast
> framework should not need caching, except maybe caching gzip output
> for large blocks of contiguous text.  
> 
The value of caching is mostly for heavy-duty applications built on top 
of the framework. The framework has no control over how much computation 
the application does, but can offer savings by  "short-circuiting" the 
repeated execution of lengthy page computations in application code.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From eric.talevich at gmail.com  Fri Sep 22 22:41:59 2006
From: eric.talevich at gmail.com (Eric)
Date: 22 Sep 2006 19:41:59 -0700
Subject: Fatal error after RE-installing Python 2.3.4
In-Reply-To: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
References: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
Message-ID: <1158979319.243945.286330@k70g2000cwa.googlegroups.com>


Cappy2112 wrote:
> I've just started a job which has a massive python2.3.4-centric tools
> installation and configuration.
>
> I know what you're going to say, but I can't upgrade and be the only
> one with a newer version. There are close to 30 engineers using this
> same tools configuration, and it has been working fine for a long time.
> For now, we all have to live with the limitations and or bugs in 2.3.4.
>
> I'm running Windows XP, SP2, on a AMD 1.79Ghz MP 2200+.
>
> After editing/testing one of the python test scripts, I was about to
> check a small script change into cvs, when my mentor suggested running
> pychecker. When I did this, I saw a several pages full of warnings.
>
> For me not knowing the code base well enough to know what to expect, He
> thought this was odd, took the file, ran pychecker on his system, with
> the file I've edited, and only sees 4-5 warnings.
>
> We have the same version of Python, that being 2.3.4, the same version
> of pychecker which is 0.8.14.
>
> I had deleted and re-installed pychecker, and still saw the same
> warnings.
> I have compared this to another machine, and again, I am the odd man
> out.
>
> I've deleted all the Python packages, pythonwin, and The core 2.3.4
> distribution, and re-installed everything from scratch.
>
> Now, When I launch Python from a cmd console, the following is reported
>
> C:\Windows\system32\cmd.exe- python
> The NTVDM CPU has encountered an illegal instruction.
> Chose close to terminate the application.
>
>
> Oddly enough, when I run Python.exe from the Program Files menu, it
> launches just fine.
>
>
> The virus scanner doesn't find any known viruses, and I've also
> disabled the virus checker after un-installing-reinstalling Python the
> last time.
> I've also tried downloading another copy of the installer.
>
> Does anyone have any ideas what is causing this and how to fix it? My
> job depends on me getting Python2.3.4 back to working order.
>
>
>
> thanks

What happens when you run "C:\Python2.3\python.exe" from the command
line (or the equivalent path)? How about pythonw.exe (or the windowed
equivalent, not sure about the naming)? Are .py and .pyw files
displayed with the correct icons? When installing Python packages, is
Python 2.3 detected as the default installation?

Since there was a lot of uninstalling and reinstalling, I'm suspicious
that the Windows registry was messed up somewhere along the line. If
you're suave with regedit, you could try poking around in there.

Finally, does your $PATH include the Python directory? That could also
cause problems if it doesn't.

And, what sorts of warnings did PyChecker display? Missing
files/modules?



From gandalf at designaproduct.biz  Mon Sep 11 15:16:26 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Mon, 11 Sep 2006 21:16:26 +0200
Subject: Secure XMLRPC Server / PEM Files
In-Reply-To: <4505B54C.30905@designaproduct.biz>
References: <1158001318.771982.319880@m73g2000cwd.googlegroups.com>
	<4505B54C.30905@designaproduct.biz>
Message-ID: <4505B60A.5050006@designaproduct.biz>


>
>
> If you have OpenSSL installed, you can do the following:
>
> 1. Create a new directory and place the two attached files in it 
> (openssl.cnf and generate.sh)
> 2. Run  "chmod +x gen_cert.sh ; ./gen_cert.sh  yourdomain.com"
I meant generate.sh instead of gen_cert.sh.

Under windows it won't work. But you can easily convert generate.sh into 
generate.bat. :-)

  Laszlo



From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 11:11:00 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 16:11:00 +0100
Subject: best way of testing a program exists before using it?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B43E@vogbs009.gb.vo.local>

[skip at pobox.com]
| Sent: 12 September 2006 16:04
| To: python-list at python.org
| Subject: Re: best way of testing a program exists before using it?
| 
|     Nick> Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
|     >> [Nick Craig-Wood]
|     >> 
|     >> | Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
|     >> | >          if os.path.isfile (filepath):
|     >> | >            print filepath
|     >> | 
|     >> | You might get a more accurate result using
|     >> | 
|     >> |   os.access(filepath, os.X_OK)
|     >> | 
|     >> | instead of
|     >> | 
|     >> |   os.path.isfile(filepath)
|     >> | 
|     >> | Which checks the file is executable
| 
| Just picking up this thread late.  Note that access() doesn't 
| do what you
| want unless your real and effective user ids are the same.  
| Granted, that's
| the case most of the time, but not always...

Also, I just looked at the implementation in posixmodule.c,
and at the msdn article on its use, and at a thread in python-dev
a year or so ago. The last -- where someone was proposing more
specifics if the call fails -- didn't really go anywhere, and is
full of people (GvR and others) saying: don't use os.access unless...

The msdn article: http://msdn2.microsoft.com/en-us/library/1w06ktdy.aspx
doesn't even seem to suggest that checking for executableness is a
possibility, and I think that the posixmodule.c code is simply
swallowing any non-OK return value and saying: No. (The msdn page
suggests that invalid parameters will return EINVAL).

All that said, I think the only thing would be to add a line to
the docs saying sthg like: This will always return False for X_OK under
Win32. I'm happy to submit the patch, but is it worth it?

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From python.list at tim.thechases.com  Wed Sep 27 15:05:50 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 27 Sep 2006 14:05:50 -0500
Subject: Top and Bottom Values [PEP: 326]
In-Reply-To: <Xns984B746409A6BOKB@199.45.49.11>
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>	<efdjr1$3c2$00$1@news.t-online.com>	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
	<Xns984B746409A6BOKB@199.45.49.11>
Message-ID: <451ACB8E.8070406@tim.thechases.com>

>> To begin with this already fails:
>>
>>>>> for i in xrange(Top):
>> ...   print i
> 
>     	What do you expect this to do?  Loop forever?

Perhaps the infinite loop should take half as long as

 >>> for i in xrange(Bottom, Top): print i

Though then the values when the loop first starts are kinda 
ambiguous... :)

Given the limits of xrange:

 >>> for i in 
xrange(10000000000000000000000000,10000000000000000000000009):
...	print i

Traceback (most recent call last):
   File "<stdin>", line 1, in ?
OverflowError: long int too large to convert to int

I suspect one would have an overflow condition to help break you 
out of the loop...

 >>> try:
...	for i in range(Top):
...		print i
... except OverflowError:
...	print 'done!'



...and then you time your instruction cycles and your disk reads 
so they fall under the read-head at just the right time... [*]

-tkc



[*] http://www.catb.org/jargon/html/story-of-mel.html


From smith.patrick__NOSPAM__ at gmail.com  Fri Sep 29 10:31:52 2006
From: smith.patrick__NOSPAM__ at gmail.com (Patrick Smith)
Date: Fri, 29 Sep 2006 10:31:52 -0400
Subject: wxPython and threading issue
References: <rI%Sg.124726$sS1.27151@read1.cgocable.net>
	<1159499923.311082.63610@h48g2000cwc.googlegroups.com>
	<an0Tg.125766$sS1.18589@read1.cgocable.net>
	<1159514838.443661.228420@i42g2000cwa.googlegroups.com>
Message-ID: <z7aTg.90493$ED.50643@read2.cgocable.net>

> Well, the problem is that you can't simply kill a thread--it shares
> memory with other threads that it could be leaving in an inconsistent
> state.  Imagine that it was, say, holding a lock when it was forceably
> killed.  Now any other thread that tries to acquire that lock will
> block forever.
>
> You really do need the thread's cooperation so that it only exits when
> everything is in a kosher state.  Can you dig into the incredibly long
> function and change it to do the flag-checking and exiting safely?
>
> I second the notion to consider using subprocesses instead of threads;
> that's almost always a good idea unless you're really sharing a lot of
> complex data structures.
>

Hi,
Thanks again for your replies.

The way this was originally working was actually using a subprocess,
however, the people who this program is for were having problems that when
the application was closed, the subprocess was still around in the system,
which was why they wanted the other module it is using to have a function it
could call, rather then using popen on the main method.

Also, the people who I am doing this for need something ASAP and for now are
fine with the cancel button completely closing the entire program.  Is there
at least a nice way to do this?

Thanks for all your replies,they've all been very helpful.




From jstroud at mbi.ucla.edu  Thu Sep 21 06:03:34 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 10:03:34 GMT
Subject: Evaluation of Truth Curiosity
In-Reply-To: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
References: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>
Message-ID: <WrtQg.3912$6S3.1996@newssvr25.news.prodigy.net>

Everyone wrote:
 > [something intelligent]

Ah, clarity. My confusion can undoubtedly be traced to a non-existent 
formal training in computer programming.

Thank you.


From ironfroggy at gmail.com  Wed Sep 13 04:16:26 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Wed, 13 Sep 2006 04:16:26 -0400
Subject: Extra Unittest Information
Message-ID: <76fd5acf0609130116rec7829aqea560ccef5bf6df3@mail.gmail.com>

This is something I have been wanting to find for a while, but i
haven't figured out. I really would love to know if there is some way
I can report extra information while running unittests, and have that
information appear along with the tracebacks, so its near the relevent
test's results.


From paolopantaleo at gmail.com  Fri Sep 22 10:28:09 2006
From: paolopantaleo at gmail.com (Paolo Pantaleo)
Date: Fri, 22 Sep 2006 16:28:09 +0200
Subject: Writing Video conference software for Windows
In-Reply-To: <83e8215e0609220551j2cca8c66g62c20020b89b5281@mail.gmail.com>
References: <mailman.265.1158667756.10491.python-list@python.org>
	<1158896686.543022.286760@i42g2000cwa.googlegroups.com>
	<83e8215e0609220551j2cca8c66g62c20020b89b5281@mail.gmail.com>
Message-ID: <83e8215e0609220728t755c86ack150f9c17ff1d494d@mail.gmail.com>

2006/9/22, Paolo Pantaleo <paolopantaleo at gmail.com>:
> Thnx everybody for the precious help :)
>
> Someone said about VNC... I'll take a look, but since it is an
> exercise I need to do it, I can't just say someone else arelady did
> that :)
>
> Everything seems quite useful. I forgot two specifications:
>
> 1. Screen should be split in small squares and only the changing
> squares must be transmitted (Ok it shouldn't be too difficult)
>
> 2. The comunication must be in multicast

Twisted supports multicast ( example
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/425975)

>
> I will spend some time testing the resources.
>
> PAolo
>


-- 
if you have a minute to spend please visit my photogrphy site:
http://mypic.co.nr


From skip at pobox.com  Thu Sep  7 09:35:25 2006
From: skip at pobox.com (skip at pobox.com)
Date: Thu, 7 Sep 2006 08:35:25 -0500
Subject: IronPython on Mono howto
In-Reply-To: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
Message-ID: <17664.8221.384232.789579@montanaro.dyndns.org>


    sanxiyn> For those of us who have never used IronPython or Mono, is
    sanxiyn> there a quick start document laying about somewhere?  It wasn't
    sanxiyn> clear to me where to even look.

    sanxiyn> Okay, here we go:
    ...

Thanks.  Worked like a charm.  Like others I noticed the apparent
performance drop.  I presume that's more a comment on the state of
optimization in Mono than on IronPython itself.

One thing I did find especially annoying though was that none of the editing
keys worked.  DELETE, BACKSPACE, Ctrl-U.  All just inserted themselves.
Ctrl-D didn't exit.  (I had to "raise SystemExit" to exit.)

Is this a known problem?  Is it a Mono thing or an IronPython thing?  Any
workaround?

Thx,

Skip



From rdiaz02 at gmail.com  Fri Sep  8 17:57:24 2006
From: rdiaz02 at gmail.com (Ramon Diaz-Uriarte)
Date: Fri, 8 Sep 2006 23:57:24 +0200
Subject: Building Python Based Web Application
In-Reply-To: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
Message-ID: <624934630609081457p79f592cfv5240c9b31b7c008c@mail.gmail.com>

On 9/8/06, James Stroud <jstroud at mbi.ucla.edu> wrote:
> Hello All,
>
> I am interested in setting up a modest invoicing system for some
> consulting I am doing. I like the idea of managing this on the web and
> creating invoices and printing them from a browser. However, I'm not
> really sure where to start. I've played with some CMS applications, but
> they seem more for blogging (mamba, wordpress, etc.). Ideally, I would
> like to interface with mySQL (or whatever the favorite web-flavor
> database app is these days). I would like to be able to use my python
> skills.
>
> I confident that if I set out to write this from scatch, I will be
> seriously re-inventing the wheel, perhaps several times over.
>
> So, my question is, does anyone know of a book and/or some kind of
> framework that would make the best sense for what I am describing here?
> I've heard of Zope, but I would like to make sure its appropriate for
> the job before I spend 2 or 3 days getting acquainted with it. I'm adept
> at HTML, python, CSS, python-CGI, and interfacing with mySQL through
> DBI. I'm sure I could get something to work with these skills, but I
> want to minimize wheel re-invention as much as possible.
>
> Basically, I want a jump start on data-base oriented web development
> with a focus on applying my python skills.

I think that Karrigell might do what you want, and you can read all
the (excellent) documentation in a few hours. Otherwise, specially if
you think you might get deeper into web-based stuff, with more
complex/special/whatever needs, I'd probably try Pylons (which has
also very nice and well organized docs). I have no direct experience
with Django or TG, but I find them "overwhelming", specially compared
to Karrigell; Zope I find even more overwhelming.

HTH,

R.

> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
>
> http://www.jamesstroud.com/116
> --
> http://mail.python.org/mailman/listinfo/python-list117
>


-- 
Ramon Diaz-Uriarte
Bioinformatics Unit
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz


From tenax.raccoon at gmail.com  Thu Sep  7 13:42:54 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 7 Sep 2006 10:42:54 -0700
Subject: Method resolution for super(Class, obj).
In-Reply-To: <49h0g2t0rni9mk4gs3o8baqgr66q1847es@4ax.com>
References: <49h0g2t0rni9mk4gs3o8baqgr66q1847es@4ax.com>
Message-ID: <1157650974.472127.47470@h48g2000cwc.googlegroups.com>


ddtl wrote:
> Hello everybody.
>
> Consider the following code:
>
>
> class A(object):
>     def met(self):
>         print 'A.met'
> class B(A):
>     def met(self):
>         print 'B.met'
>         super(B,self).met()
> class C(A):
>     def met(self):
>         print 'C.met'
>         super(C,self).met()
> class D(B,C):
>     def met(self):
>         print 'D.met'
>         super(D,self).met()
> d = D()
> d.met()
>
>
> When executed, it prints:
>
> D.met
> B.met
> C.met
> A.met
>
> The book (Python in a nutshell, 2nd edition) explains:
>
> "The solution is to use built-in type super. super(aclass, obj),
> which returns a special superobject of object obj. When we look
> up an attribute (e.g., a method) in this superobject, the lookup
> begins after class aclass in obj's MRO."
>
> But I don't understand - MRO means that when attribute is found
> somewhere in hierarchy, the search for it stops, that is: when
> d.met() is executed, it is supposed to print 'D met', call
> super(D,self).met() which should resolve met() to be B's attribute,
> and after B's met() is executed, we should be done. Why does the
> lookup proceeds from B to C as though met() wasn't found in B?
> Indeed, lookup order (according to a new-style MRO) is B, then C
> and at last A (because of a diamond inheritance), but only when
> attribute is not found in B it is looked up in C, and only if it
> is not found neither in B nor in C it is looked up in A...
>
> What is different here?

Let's examine what the mro order is for class D:
>>> D.mro()
[<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>,
<class '__mai
n__.A'>, <type 'object'>]

When you call d.met(), the call dispatches to the D.met() method.
After printing out 'D.met', you use super() to get the next class in
the mro order, and call that class's met method.

As shown with the mro(), the class after D is B.  So B.met() is called.
 Normally, we would be done.  But take a look at B's method!

> class B(A):
>     def met(self):
>         print 'B.met'
>         super(B,self).met()

B.met calls super, and invokes the next met method!  So, the code does
exactly what you've asked it to do, and searches for the next class
after B in the mro list: class C.  You are then invoking met method of
that class.  So, class B is calling class C's met method.

Class C also uses super, and calls the resulting met method on the
result as well.  This finds class A as the next class in the mro list,
and invokes the met method on it as well.

When you get to A's met method, you aren't calling another met method,
so the print statements end.

If you want the dispatch to end at B's method, comment out the
'super(B,self).met()' line:
>>> class B2(A):
...     def met(self):
...         print 'B2.met'

Alternatively, you could do away with using super entirely, and
actively call the superclass method that you want:
>>> class D2(B2, C):
...     def met(self):
...         print 'D2.met'
...         B2.met(self)  # Invoke B2's method directly
...
>>> d2 = D2()
>>> d2.met()
D2.met
B2.met

You don't need super() to call a superclass method.  It can help with
complex class heirarchies, but most single-descendent class structures
don't need it.  Either way, when designing a class heirarchy, you
should either always use super() or never use super().  Mixing
non-super-using and super-using can give you problems.

(Rhetorical Q: Does this make me more or less super?)

    --Jason



From hugh.frater at gmail.com  Fri Sep 15 06:03:43 2006
From: hugh.frater at gmail.com (Hugh)
Date: 15 Sep 2006 03:03:43 -0700
Subject: add without carry
In-Reply-To: <eedtao$2aa$01$1@news.t-online.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<eedtao$2aa$01$1@news.t-online.com>
Message-ID: <1158314623.512701.152950@m73g2000cwd.googlegroups.com>

Peter,

That was what I was thinking along the lines of, It's been two years
since I finished my CS degree and working in mechanical engineering
means I've nearly forgotten it all! :(

Thanks, I'll write a function in my app to handle this...

Hugh

> >>> (5 + 7) % 10
> 2
>
> In this context '%' is called 'modulo operator'. What John and Marc
> suggested is basically the same operation for the special case of binary
> numbers, i. e.
> 
> a % b == a & (b-1)
> 
> if a >= 0 and b == 2**N.
> 
> Peter



From jaysherby at gmail.com  Sat Sep  9 00:18:29 2006
From: jaysherby at gmail.com (Jay)
Date: 8 Sep 2006 21:18:29 -0700
Subject: ubuntu crash
In-Reply-To: <mailman.198.1157769400.5279.python-list@python.org>
References: <mailman.198.1157769400.5279.python-list@python.org>
Message-ID: <1157775509.488970.154300@e3g2000cwe.googlegroups.com>

Here are some commands to try:

apt-get install ubuntu-standard
apt-get install ubuntu-desktop

Also, I'd recommend trying Ubuntu's official forums website.  I've
found their community to be extremely helpful.

http://www.ubuntuforums.org/

Plus, why on earth would you want to ax Python?

benjamin.grant at duke.edu wrote:
> I typed in apt-get remove python
> and everything essentially was wiped off my computer.  I jsut want to get it
> back to the point of whwen I installed ubuntu, I'd like to get my documentst
> back as well but doubt I'll be able to do this.  I installed gnome so I have a
> graphical  interface again but can only log in as root. Is there a way to
> resintall??? thanks
> Ben



From MonkeeSage at gmail.com  Sat Sep 30 18:34:18 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 15:34:18 -0700
Subject: preemptive OOP?
References: <e9USg.47$1n3.432@news.tufts.edu>
	<JZATg.3537$5i7.15@newsreading01.news.tds.net>
	<451ee56a$0$16356$c3e8da3@news.astraweb.com>
Message-ID: <1159655658.866945.181970@m73g2000cwd.googlegroups.com>

John Salerno wrote:
> LOL. Yeah, I guess so. I kind of expected the answer to be "yes, always
> go with OOP in preparation for future expansion", but I should have
> known that Python programmers would be a little more pragmatic than that. :)

Depends on the design philosophy of a particular programmer. YAGNI and
extreme programming are one approach. But, personally, I take that more
as a suggestion not a rule. For example, I don't *need* startswith:

s = 'Cat in a tree'
f = 'Cat'
if s[0:len(f)] == f:
...

But I'm glad startswith is there because it makes it easier for me to
understand what's going on and to use literals rather than temporary
variables:

if s.startswith('Cat'):
...

Regards,
Jordan



From deets at nospam.web.de  Tue Sep 19 07:39:19 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 13:39:19 +0200
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com>
	<1158615492.835407.239900@e3g2000cwe.googlegroups.com>
Message-ID: <4na377F9esroU1@uni-berlin.de>

bearophileHUGS at lycos.com wrote:

> Others have already told you the most important things.
> 
> There is another secondary advantage: the code inside a function runs
> faster (something related is true for C programs too). Usually this
> isn't important, but for certain programs they can go 20%+ faster.

I totally fail to see why that should be the case - for python as well as
for C.

So - can you explain that a bit more, or provide resources to read up on it?

Diez


From gagsl-py at yahoo.com.ar  Tue Sep 26 19:30:35 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 20:30:35 -0300
Subject: IDLE - Customizing output format
In-Reply-To: <1159295496.138650.202860@k70g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<ef6ut6$61r$1@sea.gmane.org>
	<mailman.616.1159244974.10491.python-list@python.org>
	<1159295496.138650.202860@k70g2000cwa.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926202046.040dbd00@yahoo.com.ar>

At Tuesday 26/9/2006 15:31, Ilias Lazaridis wrote:

> > >Anyways, against my better judgement, I will tell you that you can
> > >customize the
> > >output by replacing sys.displayhook with your own function:
> > >
> > >    http://www.python.org/doc/current/lib/module-sys.html
> > >
> > >  >>> import sys
> > >  >>> def f(obj):
> > >         print '    ' + repr(obj)
> > >  >>> sys.displayhook = f
> >
> > Sometimes I enable a similar approach on my sitecustomize.py, using
> > the pprint module. But I don't *always* like the output format.
>
>Can you please show this approach using "pprint"?

Sure. Put these two lines into your sitecustomize.py:

import sys, pprint
sys.displayhook = pprint.pprint

and see what happens when you eval things inside the interpreter.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From hancock at anansispaceworks.com  Sat Sep  9 15:52:49 2006
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Sat, 09 Sep 2006 14:52:49 -0500
Subject: Unable to make python work properly
In-Reply-To: <1157761014.5117.9.camel@receive>
References: <1157761014.5117.9.camel@receive>
Message-ID: <45031B91.5000608@anansispaceworks.com>

Benjamin Grant wrote:
>  Hi all, I'd greatly appreciate any help. I can configure, make and
>  install everything fine. I'm using python 2.4 I have ubuntu dapper
>  drake. I am trying to install hplip which requires python. When I do
>  this, this also works but while running the following error occurs:
>  Traceback (most recent call last): File "/usr/local/bin/hp-setup",
>  line 31, in ? import readline, gzip ImportError: No module named
>  readline

If you want Python 2.4 on Ubuntu, you should just install the "python2.4"
package (with, e.g. apt-get), rather than trying to compile it.  Doing so
should resolve the dependency problems using the package manager.

For one thing, I'm pretty sure that the Ubuntu standard package is
going to have readline included.

If you must compile the hplip package, and it needs to build Python
extensions, then you will likely need to also install the package
"python2.4-dev" (which will include the C headers and stuff that dependent
packages will need to compile).

That should be a whole lot easier than trying to recompile Python
with readline support on Ubuntu yourself (the package managers
have probably done the work for you).  I only say 'probably' because
I'm guessing this from knowing Debian, which Ubuntu is based on,
and guessing that no one would go out of their way to *remove*
readline support.

Cheers,
Terry

-- 
Terry Hancock (hancock at AnansiSpaceworks.com)
Anansi Spaceworks http://www.AnansiSpaceworks.com



From lycka at carmen.se  Thu Sep 14 07:59:19 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Thu, 14 Sep 2006 13:59:19 +0200
Subject: question about including something like sqlite in python
In-Reply-To: <9tiNg.2735$No6.53971@news.tufts.edu>
References: <9tiNg.2735$No6.53971@news.tufts.edu>
Message-ID: <eebg6n$661$1@wake.carmen.se>

John Salerno wrote:
> I was just thinking, since Python 3.0 is supposed to clean up a lot of 
> the unnecessary or redundant features of Python and make other things 
> more streamlined, does it seem to anyone that including SQLite goes 
> against this goal?

Not to me. I don't see the redundancy. The DB-API spec has been
around for years. I think it's great that one implementation comes
with Python.

> This is just me thinking out loud, mind you, but it seems like including 
>  a database module (especially one that many people won't use in favor 
> of MySQL or PostgreSQL, etc.) is weighing down the standard library. I 
> suppose the sqlite module might still be removed in 3.0, but the 
> inclusion of it at all seems a little strange (and also sort of like an 
> endorsement for using it).

Sure, but primarily it's endorsement for using the the DB-API.

Including SQLite lowers the barrier for getting started in writing
applications in a domain where Python fits well. A domain where
Visual Basic and tools like FoxPro have dominated. Libraries such
as datetime and decimal also goes in the same direction. One could
argue that a simple to use GUI building tool is another requisite
in this domain, but maybe a web tool kit is more appropriaet these
days...

In short I think it helps making Python into a VB-killer, or if
you prefer (yuk!) the new COBOL! ;^)


From siona at chiark.greenend.org.uk  Tue Sep 12 12:04:49 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 12 Sep 2006 17:04:49 +0100 (BST)
Subject: efficient text file search -solution
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
	<1157999782.414287.83890@p79g2000cwp.googlegroups.com>
	<1158004788.549519.172620@i3g2000cwc.googlegroups.com>
Message-ID: <z+C*OABqr@news.chiark.greenend.org.uk>

noro <amit.man at gmail.com> wrote:
>OK, am not sure why, but
>
>fList=file('somefile').read()
>if fList.find('string') != -1:
>   print 'FOUND'
>
>works much much faster.
>
>it is strange since i thought 'for line in file('somefile')' is
>optemized and read pages to the memory,

Step back and think about what each is doing at a high level of
description: file.read reads the contents of the file into memory
in one go, end of story. file.[x]readlines reads (some or all of)
the contents of the file into memeory, does a linear searches on it
for end of line characters, and copies out the line(s) into some
new bits of memory. Line-by-line processing has a *lot* more work
to do (unless you're read()ing a really big file which is going to
make heavy demands on memory allocation) and it should be no
surprise that it's slower.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From kylotan at gmail.com  Fri Sep  8 04:47:53 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 8 Sep 2006 01:47:53 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157667594.051943.265040@d34g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
Message-ID: <1157705273.423649.132210@i42g2000cwa.googlegroups.com>

mensanator at aol.com wrote:
> Bruno Desthuilliers wrote:
> > SQLite never pretended to be a full-blown RDBMS - just a lightweight
> > simple embedded database as SQL-compliant as possible.
>
> Ah, *you* haven't read the documentation either!
>
> "as SQL-compliant as possible"?
>
> ROTFLMAO!

No need to be rude really. In this context "as SQL-compliant as
possible" means, "as SQL-compliant as it is possible to be within the
project's restrictions", which presumably refer to code size and speed.
It's a reasonable trade-off.

> **********************************************************
> * The authors argue that static typing is a bug in the   *
> * SQL specification that SQLite has fixed in a backwards *
> * compatible way.                                        *
> **********************************************************
> </quote>
>
> "Fixed"? Up until now, I didn't think it was possible for
> crackpot theories to be implemented in computer science.
> This is absolutely the craziest thing I've ever heard.

It's not a crackpot theory. It's a completely reasonable theory. SQL is
based on relational algebra, which provides a mathematical set of
operators for grouping data that is stored in separate sets. That data
is selected and projected according to its value, and nothing else. The
concept of it having a 'type' has been overlaid on top of this,
presumably to facilitate efficient implementation, which tends to
require fixed-width rows (and hence columns). It's not necessary in any
sense, and it's reasonable to argue that if it was trivial to implement
variable width columns as efficiently as fixed width columns, that
explicit data types might never have needed to exist.

> So much for
> "If switching to a larger database such as PostgreSQL or Oracle
> is later necessary, the switch should be relatively easy."

If you rely too much on a language-enforced data type rather than the
values of the underlying data, perhaps Python is not for you!
Personally I've migrated from SQLite to MySQL a couple of times (on
small projects, granted) and not found it to be a problem at all.

> Fixing the documentation is now becoming an enormous task.

I don't think so... it doesn't take much to say that the module
implements a subset of SQL but stores ignores data types.

> What are the chances that anything I send in as a bug report
> will simply be ignored? Kind of like the Emporer's New Clothes, eh?
> It would be an admission of ignorance and stupidity on the part
> of the Python Development Team, wouldn't it?

Why get so bitter over this? I agree the docs need fixing but you make
it sound like this was a deliberate attempt to make you waste your
time.

-- 
Ben Sizer



From MonkeeSage at gmail.com  Sat Sep  9 02:06:37 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 8 Sep 2006 23:06:37 -0700
Subject: how do you get the name of a dictionary?
References: <mailman.9668.1156283600.27775.python-list@python.org>
	<1156284812.469380.274370@b28g2000cwb.googlegroups.com>
	<mailman.9686.1156315895.27775.python-list@python.org>
	<1156350580.363393.256730@74g2000cwt.googlegroups.com>
	<mailman.9713.1156351048.27775.python-list@python.org>
	<1157707489.119939.136720@m79g2000cwm.googlegroups.com>
	<mailman.160.1157710534.5279.python-list@python.org>
	<1157758049.962831.121290@m73g2000cwd.googlegroups.com>
	<gcsMg.9005$bM.6932@newsread4.news.pas.earthlink.net>
Message-ID: <1157781997.410274.142360@i42g2000cwa.googlegroups.com>

Dennis Lee Bieber wrote:
> 	id() returns, in C based Python, the memory address at which an
> object is stored. That is all... Names in Python are mapped to the
> object -- essentially they are mapped to the address of the object.
> There is NO intermediate hidden identifier.
>
> [snip]
>
> Object 1 has two names bound to it. But the only way to find out what
> those names are requires first having some other reference bound to the
> object, and then asking each name if the id() (the address) matches the
> id() of the reference in question.

Ahh! I see. That makes sense. Thanks for taking the time to explain it
to a noob. :)

Regards,
Jordan



From michele.petrazzoDELETE at DELETEunipex.it  Wed Sep 27 12:05:15 2006
From: michele.petrazzoDELETE at DELETEunipex.it (Michele Petrazzo)
Date: Wed, 27 Sep 2006 16:05:15 GMT
Subject: Decoding group4 tiff with PIL
In-Reply-To: <1159369152.751796.127670@m73g2000cwd.googlegroups.com>
References: <1159369152.751796.127670@m73g2000cwd.googlegroups.com>
Message-ID: <%ixSg.125762$_J1.875770@twister2.libero.it>

Filipe wrote:
> Is decoding group4 tiff possible with Python Imaging Library?

Not natively:
http://mail.python.org/pipermail/image-sig/2003-July/002354.html

> [1]
> http://effbot.python-hosting.com/file/stuff/sandbox/pil/libtiff.py 
> [2] http://www.haynold.com/software_projects/2004/pytiff/
> 
> Any thoughts?
> 

[1] Seem to work. You need "only" some dlls
(http://gnuwin32.sourceforge.net/packages/tiff.htm)

[3] FreeImagePy

> Cheers, Filipe
> 

Bye,
MIchele


From jaysherby at gmail.com  Fri Sep 15 21:58:26 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 18:58:26 -0700
Subject: mp3 libs and programs
In-Reply-To: <1158371633.640428.313040@m73g2000cwd.googlegroups.com>
References: <1158369401.262011.256700@b28g2000cwb.googlegroups.com>
	<1158371633.640428.313040@m73g2000cwd.googlegroups.com>
Message-ID: <1158371906.298866.118100@p79g2000cwp.googlegroups.com>

That's definately a good choice, but what about mplayer in slave mode?
Can I use that with python?  Would that be able to seek?


Harold Fellermann wrote:
> hi,
>
> Jay wrote:
> > I'm writing a python script that involves playing mp3 files.  The first
> > approach I had was sending commands to unix command-line programs in
> > order to play them.  I tired mpg123 and moosic, but there was a key
> > feature to my program's success that's missing.  SEEK!  I need to be
> > able to start playing a song at an arbitrary point in the song.  I
> > can't find anything to let me do this.  Does anyone have any advice or
> > has anyone needed something similar?
> 
> check out pyxmms.



From http  Mon Sep 25 15:50:52 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 12:50:52 -0700
Subject: SSL meta data
References: <ef99ht$ih2$1@svr7.m-online.net>
	<7xk63r21t2.fsf@ruckus.brouhaha.com>
	<mailman.601.1159213325.10491.python-list@python.org>
Message-ID: <7xu02vn2sj.fsf@ruckus.brouhaha.com>

Jan Dries <jan.dries at dcube-resource.be> writes:
> C:\> curl -v https://www.paypal.com
> 
> I'm sure that by using the cURL API directly, you can obtain the
> certificate information in a more direct way without having to rely on
> parsing the above output with regexps. Doing so might also be more
> complex though :-)

Yeah, same idea, I haven't stayed on top of curl and so forth.  I usually
use openssl for that:

   openssl s_client -connect www.paypal.com:443

This prints out the cert so you'd have to parse it in a separate step
(e.g. save it in a file first).  Anyway these are just dirty hacks,
but might be ok for this type of internal administrative purposes.
Otherwise use the real API.


From rpdooling at gmail.com  Fri Sep 15 23:02:21 2006
From: rpdooling at gmail.com (BartlebyScrivener)
Date: 15 Sep 2006 20:02:21 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <87ac5152hz.fsf@gmail.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
	<mailman.109.1158271534.10491.python-list@python.org>
	<Xns983EBE117F9FEOKB@199.45.49.11> <87ac5152hz.fsf@gmail.com>
Message-ID: <1158375741.660778.237790@e3g2000cwe.googlegroups.com>

>> which allows soft word-wrap (no
>> line breaks stored in the file)

gvim 7.0

if you set wrap and linebreak

:set wrap

:set lbr

The lines will softwrap only at whitespace and various punctuation
marks.

For the indentation issue, use autoindent.

rd



From corridor.infinite at gmail.com  Thu Sep  7 02:28:40 2006
From: corridor.infinite at gmail.com (Infinite Corridor)
Date: 6 Sep 2006 23:28:40 -0700
Subject: 22, invalid agument error
In-Reply-To: <1157604802.077435.256750@i42g2000cwa.googlegroups.com>
References: <1157563063.063705.317970@m73g2000cwd.googlegroups.com>
	<1157593501.762579.135500@m73g2000cwd.googlegroups.com>
	<1157604802.077435.256750@i42g2000cwa.googlegroups.com>
Message-ID: <1157610520.780685.298280@d34g2000cwd.googlegroups.com>


kondal wrote:
> > >   sockobj.bind(('',40007))
> >
> > tried on my N6600 with same error
> >
> > try using your phone's IP instead of the empty string ''
> >
> > tried sockobj.bind(('127.0.0.1',40007)) and did not get an error
>
> In general sockets layer bind with null host makes it pick the address
> from arp resolution and null in port makes it pick a random number as a
> source port. This is reason bind call is not required for client
> connections.
>
> I think Python for S60 has some problem in sockets layer for the bind
> function. Best is to remove the bind call in the client program as
> people will test with this senario in general.

Well the bind call is in the server program, not the client. I want to
run the server program on the cellphone.
Any idea how to fix it?

Thanks!



From fredrik at pythonware.com  Thu Sep 28 17:39:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 23:39:49 +0200
Subject: startswith() and endswith() for re's would be more intuitive
In-Reply-To: <1159479137.991732.135620@k70g2000cwa.googlegroups.com>
References: <1159452797.316658.125250@m73g2000cwd.googlegroups.com>	<451bdc57$0$20520$626a54ce@news.free.fr>
	<1159479137.991732.135620@k70g2000cwa.googlegroups.com>
Message-ID: <efhff4$o4$1@sea.gmane.org>

metaperl wrote:

> Nothing. There is also nothing wrong with
> 
> re.match('blah', somestring)
> 
> but it does read as well as
> 
> re.atstartof('blah', something)

yuck.

> and the counterpart for EOS is not there.

sure is; it's spelled:

     re.match('.*blah$', somestring)

</F>



From bdesth.quelquechose at free.quelquepart.fr  Tue Sep 26 18:25:09 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 27 Sep 2006 00:25:09 +0200
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
Message-ID: <4519a523$0$24394$636a55ce@news.free.fr>

metaperl.etc at gmail.com a ?crit :
> A very old thread:
> http://groups.google.com/group/comp.lang.python/browse_frm/thread/2c5022e2b7f05525/1542d2041257c47e?lnk=gst&q=for+else&rnum=9#1542d2041257c47e
> 
> discusses the optional "else:" clause of the for statement.
> 
> I'm wondering if anyone has ever found a practical use for the else
> branch?
> 
<aol>
Just like Skip and Amaury...
</aol>


From larry.bates at websafe.com  Wed Sep  6 12:18:09 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 06 Sep 2006 11:18:09 -0500
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <edmlbv$a9h$1@newsreader2.netcologne.de>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
Message-ID: <8MqdneHW48EjaWPZnZ2dnUVZ_sednZ2d@comcast.com>

Claudio Grondi wrote:
> (just wanted to share my experience with IronPython 1.0)
> 
> The context:
>   C:\IronPython> ipy.exe
>   IronPython 1.0.60816 on .NET 2.0.50727.42
>   Copyright (c) Microsoft Corporation. All rights reserved.
> vs.
>   C:\Python24> python.exe
>   Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)]
> on win32
> 
> IronPython raises "UnboundLocalError: local variable 'strData'
> referenced before assignment" error in following case:
> <code>
>     while(someCondition):
>       try:
>         strData = strSomeValue()
>       except:
>         pass
>       if( type(strData) == str ) : ### <<< HERE THE ERROR
>         doSomething()
> </code>
> CPython 2.4.2 doesn't raise an error with same code.
> 
> As strData is not set anywhere before in the code it seems, that
> IronPython is somehow right, but I am not sure if it is a bug or a feature.
> 
> Another problem with IronPython where CPython 2.4.2 runs ok was while I
> was trying to do:
>   f = file(r'\\.\PhysicalDrive0', 'rb')
> getting "ValueError: FileStream will not open Win32 devices such as disk
> partitions and tape drives. Avoid use of "\\.\" in the path."
> Here the same - I am not sure if it is a bug or a feature.
> 
> Can someone knowledgeable elaborate on it a bit please?
> 
> Claudio Grondi

Your problem is a blanket exception handler that ignores
the exception.  Blanket exceptions are almost always a
bad idea.  Blanket exceptions with pass as the only
command in the except: block is ALWAYS a bad idea.

Basically the line strData = strSomeValue() caused an
exception.  Since it was inside a try: block, it then
executed what was in the except: block.  Since all that
was in the except: block was pass, it just fell through
to the if statement.  At that point strData is not
defined because the try block failed and never create
strData object.

It is doing EXACTLY what you told it to do.

-Larry Bates


From fredrik at pythonware.com  Wed Sep 27 14:13:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 27 Sep 2006 20:13:31 +0200
Subject: ElementTree and proper identation?
In-Reply-To: <r4zSg.35$1n3.414@news.tufts.edu>
References: <iYySg.34$1n3.469@news.tufts.edu> <r4zSg.35$1n3.414@news.tufts.edu>
Message-ID: <efef0a$5au$1@sea.gmane.org>

John Salerno wrote:

> Well, further research reveals that this function isn't available yet in 
> any version.

what keeps you from using the source code on the page you're talking about ?

</F>



From sjmachin at lexicon.net  Tue Sep 12 08:46:47 2006
From: sjmachin at lexicon.net (John Machin)
Date: 12 Sep 2006 05:46:47 -0700
Subject: Clarify Regex in Python.
In-Reply-To: <1158064674.441245.165610@d34g2000cwd.googlegroups.com>
References: <1158062822.975420.185210@p79g2000cwp.googlegroups.com>
	<mailman.341.1158063739.5279.python-list@python.org>
	<1158064674.441245.165610@d34g2000cwd.googlegroups.com>
Message-ID: <1158065207.242490.133020@e3g2000cwe.googlegroups.com>


cooldudevamsee at gmail.com wrote:
> > Erm, is there some specific reason why you can't just use the search
> > method? Why does it *have* to be match()?
> >
> > regards
> >   Steve
>
>
> I know there r many more methods to do the job, I just wonder can we
> turnoff the default behaviour of match method.
>

Don't wonder. Read the documentation. There is a whole section devoted
to match versus search.  If you believe there are undocumented keyword
arguments to the match method and we are wantonly withholding the
information, then you should check out your theory by downloading the
source code and reading that.

HTH,
John



From mahs at telcopartners.com  Thu Sep  7 00:52:12 2006
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 06 Sep 2006 21:52:12 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157599243.076703.180740@p79g2000cwp.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>	<mailman.86.1157565197.5279.python-list@python.org>	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>	<mailman.98.1157578665.5279.python-list@python.org>
	<1157599243.076703.180740@p79g2000cwp.googlegroups.com>
Message-ID: <edo8lc$55j$1@sea.gmane.org>

George Sakkis wrote:
> Michael Spencer wrote:
> 
>> Here's a small update to the generator that allows optional handling of the head
>> and the tail:
>>
>> def chunker(s, chunk_size=3, sentry=".", keep_first = False, keep_last = False):
>>      buffer=[]
...
> 
> And here's a (probably) more efficient version, using a deque as a
> buffer:
> 

Perhaps the deque-based solution is more efficient under some conditions, but 
it's significantly slower for all the cases I tested:

Here are some typical results:

Using George's deque buffer:
 >>> time_chunkers(chunkerGS, groups=1000, words_per_group=1000, chunk_size=300)
'get_chunks(...)  30 iterations, 16.70msec per call'
 >>> time_chunkers(chunkerGS, groups=1000, words_per_group=1000, chunk_size=30)
'get_chunks(...)  35 iterations, 14.56msec per call'
 >>> time_chunkers(chunkerGS, groups=1000, words_per_group=1000, chunk_size=3)
'get_chunks(...)  35 iterations, 14.41msec per call'

Using the list buffer
 >>> time_chunkers(chunker, groups=1000, words_per_group=1000, chunk_size=300)
'get_chunks(...)  85 iterations, 5.88msec per call'
 >>> time_chunkers(chunker, groups=1000, words_per_group=1000, chunk_size=30)
'get_chunks(...)  85 iterations, 5.89msec per call'
 >>> time_chunkers(chunker, groups=1000, words_per_group=1000, chunk_size=3)
'get_chunks(...)  83 iterations, 6.03msec per call'
 >>>

Test functions follow:

def make_seq(groups = 1000, words_per_group = 3, word_length = 76, sentry = "."):
     """Make a sequence of test input for chunker

     >>> make_seq(groups = 5, words_per_group=5, word_length = 2, sentry="%")
         ['WW', 'WW', 'WW', 'WW', 'WW', '%', 'WW', 'WW', 'WW', 'WW', 'WW', '%',
         'WW', 'WW', 'WW', 'WW', 'WW', '%', 'WW', 'WW', 'WW', 'WW', 'WW', '%',
         'WW', 'WW', 'WW', 'WW', 'WW', '%']
         """
     word = "W"*word_length
     group = [word]*words_per_group+[sentry]
     return group*groups

def time_chunkers(chunk_func, groups = 1000, words_per_group=10, chunk_size=3):
     """Test harness for chunker functions"""
     seq = make_seq(groups)
     def get_chunks(chunk_func, seq):
         return list(chunk_func(seq))
     return timefunc(get_chunks, chunk_func, seq)

def _get_timer():
     import sys
     import time
     if sys.platform == "win32":
         return time.clock
     else:
         return time.time
     return

def timefunc(func, *args, **kwds):
     timer = _get_timer()
     count, totaltime = 0, 0
     while totaltime < 0.5:
         t1 = timer()
         res = func(*args, **kwds)
         t2 = timer()
         totaltime += (t2-t1)
         count += 1
     if count > 1000:
         unit = "usec"
         timeper = totaltime * 1000000 / count
     else:
         unit = "msec"
         timeper = totaltime * 1000 / count
     return "%s(...)  %s iterations, %.2f%s per call" % \
                 (func.__name__, count, timeper, unit)







From wahab at chemie.uni-halle.de  Fri Sep 29 15:54:52 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Fri, 29 Sep 2006 21:54:52 +0200
Subject: Addendum (was: creating a small test server on my local computer)
In-Reply-To: <efjskl$23j$1@mlucom4.urz.uni-halle.de>
References: <9bdTg.54$1n3.399@news.tufts.edu>
	<451d684a$0$4516$e4fe514c@news.xs4all.nl>
	<efeTg.56$1n3.620@news.tufts.edu>
	<efjskl$23j$1@mlucom4.urz.uni-halle.de>
Message-ID: <efjtv5$2eh$1@mlucom4.urz.uni-halle.de>

Thus spoke Mirco Wahab (on 2006-09-29 21:32):
> Thus spoke John Salerno (on 2006-09-29 21:13):
>> Irmen de Jong wrote:
>>> John Salerno wrote:
>>>> Ok, this is completely unnecessary so I don't intend to get into stuff 
>>> Why do you need to use Python for the server?
>> Well, perhaps I don't know what I'm talking about. I'm on an XP machine 
> My advice would be (because Apache installations on
> ...

> download a pre-built virtual machine w/Apache and
> Python preinstalled and configured (=> 190MB):
>    ( http://www.rpath.org/rbuilder/project/lamp/build?id=4912 )
> and give the virtual machine a shared ip number
> on your own network card (mostly trivial) - thats it.
> ...

forget this virtual appliance (above), better use
this one:

 http://www.vmware.com/vmtn/appliances/directory/289
 [Python Web Developer Appliance]
 ...
 includes a complete set of tools for developing and
 deploying web applications using Python
 ...

The only problem here - it's OpenBSD based ;-))

But they have a nice documentation somewhere:
http://www.mcguru.net/download/pyweb/pyweb-ug/index.html

M.


From Matthew.Warren at Digica.com  Fri Sep 29 10:10:22 2006
From: Matthew.Warren at Digica.com (Matthew Warren)
Date: Fri, 29 Sep 2006 15:10:22 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <451D25A3.7010803@googlemail.com>
Message-ID: <D4F9316ACC9D20489CC81D19B8A87D5B039FE577@UKEX01.Digica.local>

 


________________________________

	From: python-list-bounces+matthew.warren=digica.com at python.org
[mailto:python-list-bounces+matthew.warren=digica.com at python.org] On
Behalf Of Hari Sekhon
	Sent: 29 September 2006 14:55
	To: python-list at python.org
	Subject: Re: Making sure script only runs once instance at a
time.
	
	
	I'm not sure if that is a very old way of doing it, which is why
I was reluctant to do it. My way actually uses the process list of the
os (linux) and counts the number of instances. If it is more than 0 then
another process is running and the script exits gracefully.
	
	Also, apart from the fact the using lockfiles feels a bit 1970s,
I have found that in real usage of other programs within the company
that use lockfiles, it sometimes causes a bit of troubleshooting time
when it stops working due to a stale lockfile. This especially happens
when the program is killed, the lockfile remains and causes minor
annoyance (to somebody who knows that is, more annoyance to somebody who
doesn't).
	 
	 



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From ldo at geek-central.gen.new_zealand  Tue Sep 26 20:35:23 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 12:35:23 +1200
Subject: A critique of cgi.escape
References: <slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<Xns984ABA8B57753castleamber@130.133.1.4>
Message-ID: <efcgug$vu2$3@lust.ihug.co.nz>

In message <Xns984ABA8B57753castleamber at 130.133.1.4>, John Bokma wrote:

> Brian Quinlan <brian at sweetapp.com> wrote:
> 
>> o escaping attribute values is less common than escaping element
>>    text
> 
> Again, you must be kidding...

I don't think Brian Quinlan was seriously trying to claim that was true,
only that was the argument some people were making. Anybody who's done much
work generating HTML for Web pages will know that dynamically-generated
attribute values occur far more often than dynamically-generated cdata. Or
is that pcdata?

> ... href="/search.cgi?query=3&results=10" 

You _do_ realize that the "&" should be escaped as "&amp;", don't you?


From g.brandl-nospam at gmx.net  Wed Sep 27 12:41:09 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 18:41:09 +0200
Subject: Why don't optional mutable objects show up in vars(func)?
In-Reply-To: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
References: <1159374766.385491.124590@m73g2000cwd.googlegroups.com>
Message-ID: <efe9j6$anb$2@news.albasani.net>

dannycolligan at gmail.com wrote:
> So I just got bitten by the "don't use a mutable object as an optional
> argument" gotcha.  I now realize that for this function:
> 
>>>> def func(x, y=[]):
> ...     y.append(x)
> ...     print y
> ...
> 
> y is initialized when the function is imported, not when the function
> is executed.  However, if this is the case, then why is y not showing
> up as an attribute of func?
> 
>>>> vars(func)
> {}
>>>> dir(func)
> ['__call__', '__class__', '__delattr__', '__dict__', '__doc__',
> '__get__', '__getattribute__', '__hash__', '__init__', '__module__',
> '__name__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',
> '__setattr__', '__str__', 'func_closure', 'func_code', 'func_defaults',
> 'func_dict', 'func_doc', 'func_globals', 'func_name']
> 
> I'm using Python 2.4.3, if that is at all relevant.  Thanks in advance
> for any help.

y is not an attribute of func, it's a default parameter value and as such
stored in func_defaults:

 >>> def f(x=1):
...     pass
...
 >>> print f.func_defaults
(1,)
 >>>

Georg


From jaysherby at gmail.com  Fri Sep  8 15:36:51 2006
From: jaysherby at gmail.com (Jay)
Date: 8 Sep 2006 12:36:51 -0700
Subject: tkinter text <Key> event
In-Reply-To: <mailman.104.1157593476.5279.python-list@python.org>
References: <1157590442.881433.251550@d34g2000cwd.googlegroups.com>
	<mailman.104.1157593476.5279.python-list@python.org>
Message-ID: <1157744211.240925.280990@m73g2000cwd.googlegroups.com>

Nevermind.  It works.  Sorry.  I got my files mixed up!  :-)
John McMonagle wrote:
> On Wed, 2006-09-06 at 17:54 -0700, Jay wrote:
> > I'm having trouble with using the <Key> event with the Text object.
> > When I use them together (which is a logical combination), I use this
> > code:
> >
> > 	textbox = Text(root, wrap="word", height=15, width=50)
> > 	textbox.bind("<Key>", resolveGlyphs)
> >
> > def resolveGlyphs(event):
> > 	textBuf = textbox.get(1.0, END)
> > 	print(textBuf)
> >
> > What it prints out for me is everything except for the last character
> > -- the one that triggered the event.  How can I get the entire
> > contents?
> >
>
> bind the textbox to the <KeyRelease> event because by then it has been
> drawn on the Text widget.  The <Key> event is equivalent to the
> <KeyPress> event
>
> Regards,
>
> John
>
>
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.



From tim.golden at viacom-outdoor.co.uk  Thu Sep 21 04:50:11 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 21 Sep 2006 09:50:11 +0100
Subject: Using py2exe to wrap a service?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B48A@vogbs009.gb.vo.local>

[MaR]

| I do not call pythoncom.CoInitialize ()  as I tend to expect a module
| wrapping COM stuff to do that. 

Hmmm. A slightly philosophical point. As the author of
the said module, I think I'd have said that the other
way round: I do not call CoInit... because I expect a
user of the module *who needs to involve threading*
to do that. However, I'm quite happy to call it willy-nilly
as long as there's no overhead. But I'm afraid my
knowledge of the interaction of COM with threading
is slim and mostly anecdotal.

| Some further info that may be of interest:
| python 2.4.3
| active_directory 0.4
| py2exe 0.6.5
| pywin32 208
| The Service code is taken from MyService.py supplied with py2exe as a
| sample.

All that looks good enough.

Is it possible for you to include the CoInit... call
anyway, simply as a test to see if it is the problem.
It might not be, in which case the point is moot.
(At least in this case)

If you don't get much help on this list, might
be worth moving the discussion over to the python-win32
list. I'm sure many people (like myself) watch both, but
there may be some who don't follow this list, but
do watch the -- lower traffic -- win32 list.

TJG

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From grahn+nntp at snipabacken.dyndns.org  Mon Sep 11 16:04:40 2006
From: grahn+nntp at snipabacken.dyndns.org (Jorgen Grahn)
Date: 11 Sep 2006 20:04:40 GMT
Subject: Looking for the Perfect Editor
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
	<1157892264.168364.13090@h48g2000cwc.googlegroups.com>
	<Xns983A737104599castleamber@130.133.1.4>
Message-ID: <slrnegb8bi.31i.grahn+nntp@frailea.sa.invalid>

On 10 Sep 2006 16:20:56 GMT, John Bokma <john at castleamber.com> wrote:
> "urielka" <uriel.katz at gmail.com> wrote:
>
>> use Eclipse!!!
>
> Q: how can I do x with A
> A: use B!!! OMG LOLLZZ111!!!11eleven

No, it was a perfectly reasonable answer.

(And I say that even though I (a) hate sloppy writing and (b) dislike IDEs
in general and Eclipse in particular.)

/Jorgen

-- 
  // Jorgen Grahn <grahn@        Ph'nglui mglw'nafh Cthulhu
\X/     snipabacken.dyndns.org>  R'lyeh wgah'nagl fhtagn!


From himicsm at akii.hu  Wed Sep  6 02:49:05 2006
From: himicsm at akii.hu (kishimo)
Date: 5 Sep 2006 23:49:05 -0700
Subject: IDE
References: <edlp29$6uf$1@news4.fe.internet.bosch.com>
Message-ID: <1157525345.805932.296540@d34g2000cwd.googlegroups.com>

I recommend you Stani's Python Editor (SPE) which is available for
Windows, Linux and Mac.
http://www.stani.be/python/spe
A short tutorial about SPE can be found at:
http://www.serpia.org/spe

good luck



From fredrik at pythonware.com  Fri Sep 22 02:24:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 22 Sep 2006 08:24:52 +0200
Subject: How does IPython modify the sys.path?
In-Reply-To: <1158902898.441498.122490@i42g2000cwa.googlegroups.com>
References: <1158902898.441498.122490@i42g2000cwa.googlegroups.com>
Message-ID: <eevvjj$q2s$1@sea.gmane.org>

Daniel Mark wrote:

> However, I cannot figure out how IPython can change my sys.path.
> 
> I refer to all the following sources
> 1> http://www.python.org/doc/current/inst/search-path.html  Installing
> Python Modules
> 2> KEY_LOCAL_MACHINE\Software\Python\PythonCore\2.4\PythonPath
> 3> My machine has no environment variable  "PYTHONPATH"
> 4> There is no *.pth file under
> C:\Program Files\Python24\Lib\site-packages
> that contains that information (i.e. C:\\Documents and
> Settings\\Daniel\\_ipython)

did you look up sys.path in the documentation ?

     A list of strings that specifies the search path for modules.
     Initialized from the environment variable PYTHONPATH, plus an
     installation-dependent default. /.../

     A program is free to modify this list for its own purposes.

     http://pyref.infogami.com/sys.path

</F>



From sybrenUSE at YOURthirdtower.com.imagination  Fri Sep 29 12:25:04 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Fri, 29 Sep 2006 18:25:04 +0200
Subject: Making sure script only runs once instance at a time.
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<mailman.949.1159543590.10491.python-list@python.org>
Message-ID: <slrnehqi70.ib7.sybrenUSE@schuimige.stuvel.eu>

Tim Williams enlightened us with:
> def check_lock():
>     import os, sys
>     try:
>         os.remove({filename})
>     except:
>         if "Permission denied" in sys.exc_info()[1]:
>             print 'This program is already running'
>             sys.exit()
>     f_lock = open({filename},'w')

Checking for a lock, and later acquiring the lock, seems non-atomic to
me. It's easier to simply create a lock directory. If it fails, the
dir already exists and someone else holds the lock. If it succeeds,
the lock is immediately yours, since you just created the directory.
This is atomic on most OSses AFAIK.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From blue99 at interia.pl  Tue Sep 12 09:29:56 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 12 Sep 2006 06:29:56 -0700
Subject: error
In-Reply-To: <1158067129.931764.103540@d34g2000cwd.googlegroups.com>
References: <mailman.345.1158064847.5279.python-list@python.org>
	<1158066623.060805.262800@p79g2000cwp.googlegroups.com>
	<1158067129.931764.103540@d34g2000cwd.googlegroups.com>
Message-ID: <1158067796.149396.71980@e3g2000cwe.googlegroups.com>


John Machin wrote:
> Rob Wolfe wrote:
> > prashant.burghate at wipro.com wrote:
> > > Hi,
> > [...]
> > > Step 3: Wrote the given script of multipication in a file named as
> > > multiply (using vi editor)
> >
> > The name of module should be multiply.py
> >
>
> module != source_file
> module don't have no ferschlugginer dots in its name

Ooops... sorry.
I meant name of python source file, of course.

Regards,
Rob



From btowle at carnegielearning.com  Wed Sep 13 09:37:17 2006
From: btowle at carnegielearning.com (Brendon Towle)
Date: Wed, 13 Sep 2006 09:37:17 -0400
Subject: Random Drawing Simulation -- performance issue
In-Reply-To: <mailman.1106.1158100435.5278.python-list@python.org>
References: <mailman.1106.1158100435.5278.python-list@python.org>
Message-ID: <477A5E49-3558-46E3-9980-722DE942ED75@carnegielearning.com>


On 12 Sep 2006, at 6:33 PM, python-list-request at python.org wrote:

> Date: 12 Sep 2006 15:23:51 -0700
> From: "Simon Forman" <rogue_pedro at yahoo.com>
> Subject: Re: Random Drawing Simulation -- performance issue
>
> Brendon Towle wrote:
>> I need to simulate scenarios like the following: "You have a deck of
>> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,
>> replace it, and repeat N times."
>>  [my original code snipped]
>
> I got nearly a 2x speed up with this variant:
>
> def randomDrawing3(count, population):
>     res = [[0, item[1]] for item in population]
>     mapping = []
>     for i in xrange(len(population)):
>         mapping.extend([i]*population[i][0])
>
>     n = len(mapping)
>     for i in xrange(count):
>         index = int(n * random.random())
>         res[mapping[index]][0] += 1
>
>     return res

Excellent! For some reason, the speedup I get is only ~1.5x, but  
that's still non-trivial.

Thanks much for the pointer-

B.


-- 
Brendon Towle, PhD
Cognitive Scientist
+1-412-690-2442x127
Carnegie Learning, Inc.
The Cognitive Tutor Company ?
Helping over 375,000 students in 1000 school districts succeed in math.




From ninjazombie at net.hr  Sun Sep 24 17:01:54 2006
From: ninjazombie at net.hr (NinjaZombie)
Date: Sun, 24 Sep 2006 23:01:54 +0200
Subject: Daemonizing python
Message-ID: <pan.2006.09.24.21.01.54.522795@net.hr>

Hi!

I was wondering if it is possible to turn the current python proccess into
a unix daemon, but not doing it like this: 
python myscript.py & 
but from code programaticaly.
Thanks.


From andrew-news at andros.org.uk  Sun Sep 24 19:40:40 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Mon, 25 Sep 2006 00:40:40 +0100
Subject: Unexpected behaviour of csv module
Message-ID: <ef751u$8m$1$8300dec7@news.demon.co.uk>

I have a bunch of csv files that have the following characteristics:

- field delimiter is a comma
- all fields quoted with double quotes
- lines terminated by a *space* followed by a newline

What surprised me was that the csv reader included the trailing space in 
the final field value returned, even though it is outside of the quotes. 


I've produced a test program (see below) that demonstrates this. There 
is a workaround, which is to not pass the csv reader the file iterator, 
but rather a generator that returns lines from the file with the 
trailing space stripped.

Interestingly, the same behaviour is seen if there are spaces before the 
field separator. They are also included in the preceding field value, 
even if they are outside the quotations. My workaround wouldn't help here.

Anyway is this a bug or a feature? If it is a feature then I'm curious 
as to why it is considered desirable behaviour.

- Andrew



import csv
filename = "test_data.csv"

# Generate a test file - note the spaces before the newlines
fout = open(filename, "wb")
fout.write('"Field1","Field2","Field3" \n')
fout.write('"a","b","c" \n')
fout.write('"d" ,"e","f" \n')
fout.close()

# Function to test a reader
def read_and_print(reader):
     for line in reader:
         print ",".join(['"%s"' % field for field in line])

# Read the test file - and print the output
reader = csv.reader(open("test_data.csv", "rb"))
read_and_print(reader)

# Now the workaround: a generator to strip the strings before the reader 
decodes them
def stripped(input):
     for line in input:
         yield line.strip()
reader = csv.reader(stripped(open("test_data.csv", "rb")))
read_and_print(reader)

# Try using lineterminator instead - it doesn't work
reader = csv.reader(open("test_data.csv", "rb"), lineterminator=" \r\n")
read_and_print(reader)


From mensanator at aol.com  Sat Sep  9 01:23:10 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 8 Sep 2006 22:23:10 -0700
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
	<1157749692.092338.240820@m73g2000cwd.googlegroups.com>
	<pan.2006.09.08.22.02.35.596359@gmx.net>
	<1157759163.349893.233340@m73g2000cwd.googlegroups.com>
	<1157770847.555996.314100@m79g2000cwm.googlegroups.com>
Message-ID: <1157779390.569967.132280@b28g2000cwb.googlegroups.com>


George Sakkis wrote:
> mensanator at aol.com wrote:
>
> > Sure, errors happen with static typing. After all, the values still
> > have to match. Dynamic typing allows for more potential errors and,
> > thanks to Murpy's Law, I will have a much bigger problem with data
> > integrity.
>
> If this was a java or c++ list, all this rant would be more
> understandable, but bashing dynamic typing in a dynamic language list
> seems pointless at best (as this has been beaten to death over and over
> again), flamebait at worst.

But I'm not bashing Python's use of dynamic typing. But if the
SQL Language Specification says static typing, then static typing
it is. Period.

> It should be clear by now that there are
> two (at least) alternatives:
> 1. Validate the data in python before (or at the same time when)
> feeding the DB.

Data integrity is an issue even with static typing. It's a bigger
issue with dynamic typing.

> 2. Forget sqlite and use a statically typed DBMS; it's not like there
> is a shortage of them.

I have no intention of forgetting sqlite simply because it's
now part of the standard library. I have now qualms about
using it *now* because I understand it better. But reaching
that level of understanding was like pulling teeth.

Documentation shouldn't talk down to the reader. It's always
bad when you confuse the smart people. The ignorant are
supposed to be confused. It's job of the documentation to
educate the ignorant. Hiding the idiosynchrocies of Sqlite3
from the user who's already familiar with SQL is simply
unacceptable.

>
> Massaging your SQL statements to make up for the lack of type checking
> (even if this is always possible)  would be a bad idea for more than
> one reasons (complexity,portability,performance), so you'd better not
> go down this road.
> 
> George



From metaperl.etc at gmail.com  Mon Sep  4 18:18:31 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 4 Sep 2006 15:18:31 -0700
Subject: OS X and Python - wxPython has forced a rehash of my approach
Message-ID: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>

Earlier I asked about how people installed Python on OS X, given that
one can choose from Xcode, Fink, Darwin, ActiveState and source builds:

http://groups.google.com/group/comp.lang.python/browse_thread/thread/5c4cde4206d1fbb7/37de06a6bb6b2361?lnk=gst&q=OS+X+and+Python+-+what+is+your+install+strategy%3F&rnum=1#37de06a6bb6b2361

but before I knew it, I had been sucked in by the ease and vastness of
the Fink repository.

Now my bliss run has come to a full halt due to these instructions at
`wxPython.org <http://www.wxpython.org/download.php>`_

Note to Fink users: Versions of Python installed by Fink cannot run
wxPython (unless you install and run X11...). You need to use Apple's
Framework builds, or a third-party Framework build.

And reading a bit further:

Python 2.4 Framework builds are available for download from the
undefined.org MacPython site. ActiveState also distributes a Framework
build.

So I guess I will look into a Framework build as my starting point.



From filipwasilewski at gmail.com  Thu Sep  7 15:11:25 2006
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: 7 Sep 2006 12:11:25 -0700
Subject: How to build extensions on Windows?
References: <edp56g$66u$1@foggy.unx.sas.com>
Message-ID: <1157656285.191995.222400@m79g2000cwm.googlegroups.com>

Kevin D. Smith wrote:
> I've written a simple Python extension for UNIX, but I need to get it
> working on Windows now.  I'm having some difficulties figuring out how
> to do this.  I've seen web pages that say that MS Visual Studio is
> required, and other that say that's not true, that MinGW will work.
> Then there is Mike Fletcher's web page
> (http://www.vrplumber.com/programming/mstoolkit/) that describes in
> detail how to build extensions, but most of the links to external
> software are no longer valid.  I think it's safe to say that I am
> completely lost, as there appears to be no authoritative, up-to-date
> description on how to make this work.

There is an easy way to build Python extensions on Windows with MinGW
and it works fine for me. Just follow these steps:


1. Get MinGW gcc and/or g++, preferably via MinGW installer from [1].
You may have to restart your computer or manually edit PATH system
environment variable to include MinGW's bin directory (default is
c:\mingw\bin). Then check if it is there by typing `path` in the cmd
window.

2. Get pexports-0.42h.zip from [2] and extract pexports.exe file

3. Prepare MinGW compatible .a library file
   pexports.exe c:\WINDOWS\system32\python24.dll > python24.def
   c:\mingw\bin\dlltool.exe --dllname python24.dll --def python24.def
--output-lib libpython24.a

4. Place the new libpython24.a file in the Python's libs directory (but
not in the Lib dir), default is c:\python24\libs

5. Build your extension by executing your setup script with
`--compiler=mingw32` parameter.
   python setup.py build --compiler=mingw32

Additionally you may wish to put a distutils.cfg file in the
c:\python\lib\distutils dir containing following entries:
[build]
compiler = mingw32

This will tell the distutils script to use MinGW compiler by default
when executing `python setup.py build` command.

best,
fw

[1] http://sourceforge.net/projects/mingw/
[2] http://starship.python.net/crew/kernr/mingw32/pexports-0.42h.zip



From deets at nospam.web.de  Tue Sep 26 05:59:12 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 26 Sep 2006 11:59:12 +0200
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.643.1159255733.10491.python-list@python.org>
	<1159263438.026179.145120@b28g2000cwb.googlegroups.com>
Message-ID: <4nsbvgFbpmmjU2@uni-berlin.de>

altemurbugra at gmail.com wrote:

> GOOGLE IS NOT OUR SUBJECT ANY MORE.
> 
> MY GOAL IS NOT MAKING SEARCH ON GOOGLE:
> MY GOAL IS MAKING A SEARCH ON
> www.onelook.com, for example


"""
Can you send me the list of words in the index? May I extract it from your
site?
 No, sorry. If you're thinking about writing a script to systematically copy
OneLook.com's word list, please don't. It's not yours to copy, for one
thing. But also, it wastes tremendous bandwidth and slows things down for
other users. We have software in place to detect the abuse of our service
and we'll alert your ISP if you violate our trust in you. If you're looking
for a decent-sized downloadable word list, try WordNet, which offers that
and much more. If you're working on a project for school or academic
research, let us know and we might be able to help steer you in the right
direction. 
"""

Consider this: if you'd offered the courtesy of a occasional lemonade for
you neighbours, does that mean that you like them stomping around in your
kitchen?

Nearly all of sites that offer a service like this will have policies of
that kind. So - get a grip, stop shouting, and start thinking if what you
are trying to do is legal or social. If not, and you don't care - be my
guest, but don't ask for help here!

Diez


From manstey at csu.edu.au  Thu Sep 21 01:14:49 2006
From: manstey at csu.edu.au (manstey)
Date: 20 Sep 2006 22:14:49 -0700
Subject: naming objects from string
In-Reply-To: <mailman.375.1158815161.10491.python-list@python.org>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>
	<1158813236.493366.122600@k70g2000cwa.googlegroups.com>
	<45121a25$0$75030$14726298@news.sunsite.dk>
	<mailman.375.1158815161.10491.python-list@python.org>
Message-ID: <1158815689.478403.264420@d34g2000cwd.googlegroups.com>

Hi,

thanks for the suggestions. this is my problem:

I have a metadata file that another user defines, and I don't know
their structure in advance. They might have 300+ structures. the
metadata defines the name and the tuple-like structure when read by
python.

my program reads in the metadata file and then generates python tuples
corresponding to their structures.

so they might provide a list of names, like 'bob','john','pete', with 3
structures per name, such as 'apple','orange','red' and I need 9 tuples
in my code to store their data:

bob_apple=()
bob_orange=()
..
pete_red=()

I then populate the 9 tuples with data they provide in a separate file,
and the filled tuples are then validated against the metadata to make
sure they are isomorphic.

Is this clear?

thanks



From sjmachin at lexicon.net  Tue Sep 26 07:06:05 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 04:06:05 -0700
Subject: Printing a percent sign
In-Reply-To: <efavlm$6ek$2@lust.ihug.co.nz>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>
	<efaq7s$rfd$6@lust.ihug.co.nz>
	<1159263309.699677.301130@m7g2000cwm.googlegroups.com>
	<efavlm$6ek$2@lust.ihug.co.nz>
Message-ID: <1159268765.544655.229070@i3g2000cwc.googlegroups.com>


Lawrence D'Oliveiro wrote:
> In message <1159263309.699677.301130 at m7g2000cwm.googlegroups.com>, John
> Machin wrote:
>
> > Lawrence D'Oliveiro wrote:
> >> In message <1159230293.270822.50390 at d34g2000cwd.googlegroups.com>, John
> >> Machin wrote:
> >>
> >> > 1. Reasoning: How do you get a literal "'" into an SQL string constant?
> >> > How do you get a literal "\" into a Python string constant? How do you
> >> > get a literal "$" into some *x shell command lines? Do you detect a
> >> > pattern?
> >>
> >> None of which applies to escaping of % characters in format strings.
> >
> > What I had in mind was:
> >
> > where surname = 'O''REILLY'
> > install_dir = "C:\\Python25"
> > ...
> > print "The interest rate is %.2f%% p.a." % (rate * 100.0)
> >
> > the common pattern being that the problem character is doubled.
>
> Which doesn't apply to the "$" character in *nix shell command lines.

I'll take your word for it; it's been quite a while :-) *Something* in
the dim dark past worked like that; I thought maybe I was thinking of
m4, but that gets by without doubling.

Your score so far is 1 out of 3; you have two more to go to match your
original assertion  "None of which applies...."

Cheers,
John



From pink at odahoda.de  Mon Sep 25 10:31:41 2006
From: pink at odahoda.de (Benjamin Niemann)
Date: Mon, 25 Sep 2006 16:31:41 +0200
Subject: Deprecation in String.joinfields()
References: <1159193167.036203.93810@m7g2000cwm.googlegroups.com>
Message-ID: <ef8p8e$ugu$1@online.de>

Hello,

Anoop wrote:

> I am getting the following error while trying to use deprecation
> 
> Please help
> 
>>>> li = ["a", "b", "mpilgrim", "z", "example"]
>>>> newname = string.joinfields (li[:-1], ".")
>>>> newname
> 'a.b.mpilgrim.z'
>>>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'joinfields'
> 
>>>> newname1 = string.join (li[:-1], ".")
>>>> newname1
> 'a.b.mpilgrim.z'
>>>> newname = li[:-1].joinfields(".")
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'join'
> 
> Thank you for your help

joinfields is just an alias for join and only the latter is a method of the
string class (which should be used instead of the deprecated string.join
function), which means that the string "." has a method join which takes
the list as an argument.

So what you want should be written as:

newname = ".".join(li[:-1])


HTH

-- 
Benjamin Niemann
Email: pink at odahoda dot de
WWW: http://pink.odahoda.de/


From ldo at geek-central.gen.new_zealand  Thu Sep 28 18:45:51 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Fri, 29 Sep 2006 10:45:51 +1200
Subject: What's the best way to communicate between processes?
References: <1159346472.574859.64130@i42g2000cwa.googlegroups.com>
	<efdgco$so1$1@lust.ihug.co.nz>
	<1159376167.685369.35710@b28g2000cwb.googlegroups.com>
Message-ID: <efhj94$8qn$2@lust.ihug.co.nz>

In message <1159376167.685369.35710 at b28g2000cwb.googlegroups.com>,
awmcclain.nospam at gmail.com wrote:

> ...

Don't top-post.


From pink at odahoda.de  Thu Sep 21 06:57:27 2006
From: pink at odahoda.de (Benjamin Niemann)
Date: Thu, 21 Sep 2006 12:57:27 +0200
Subject: Can I inherit member variables?
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<eetnu9$gj7$1@online.de>
	<1158834871.215969.126140@i42g2000cwa.googlegroups.com>
Message-ID: <eetr6o$mip$1@online.de>

LorcanM wrote:

> Benjamin Niemann wrote:
> 
>> You'll have to invoke the __init__ method of the superclass, this is not
>> done implicitly. And you probably want to add the weight and colour
>> attributes to your subclass in order to pass these to the animal
>> constructor.
>>
>> class fish(animal):
>>   def __init__(self, length, weight, colour):
>>     animal.__init__(self, weight, colour)
>>     self.length = length
>>     print self.weight, self.colour, self.length
>
> Thanks for the reply.
> 
> I think there's a basic misunderstanding about the nature of
> inheritance on my side.
> 
> What I want to do is instantiate the sub class (derived class) from
> within the animal class. I then expect the sub class to have inherited
> some basic properties that it knows it has (weight, colour). If I can
> expand the example I gave previously to try to make this a little
> clearer:
> 
> class animal:
>   def __init__(self, weight, colour):
>     self.weight = weight
>     self.colour = colour
> 
>   def describeMyself(self, type, measurement):
>     if type == 'bird':
>       myanimal = bird(measurement)
>     elif type == 'fish':
>       myanimal = fish(measurement)
> 
> class bird(animal):
>   def __init__(self, wingspan):
>     self.wingspan = wingspan
>     print "I'm a bird, weight %s, colour %s, wingspan %s" %
> (self.weight, self.colour, self.wingspan)
> 
> class fish(animal):
>   def __init__(self, length):
>     self.length = length
>     print "I'm a fish, weight %s, colour %s, length %s" % (self.weight,
> self.colour, self.length)

Do you really want one animal instance to act both as bird and fish?
Wouldn't it be more sensible to instanciate either bird or fish (animal
being what is called an abstract class in other OOP languages)? bird and
fish would then have their own implementation of describeMyself() with
the 'print "I'm a..."' statement.

I must admit that I don't really understand what you are trying to
achieve...


-- 
Benjamin Niemann
Email: pink at odahoda dot de
WWW: http://pink.odahoda.de/


From rhymes at myself.com  Sun Sep 24 16:59:34 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Sun, 24 Sep 2006 22:59:34 +0200
Subject: newbie IronPython compiled scripts speed question
References: <op.tgees50h3p2nzo@fafoi.lan>
Message-ID: <1hm6y6t.1w95pxge6vhiN%rhymes@myself.com>

dtlog <agarwaengrc at blabla_yahoo.com.au> wrote:
> I searched the faqs at python.org and didn't find an answer:
> does using IronPython, instead of CPython, and compiling the
> scripts into native windows executables (I heard IronPython
> can do that) result in faster execution times?

I don't know what you heard but IronPython generates IL code which
happens to be the bytecode of the CLR (the runtime of .NET). So you are
not generating "native" stuff but a PE executable wrapping the .NET
stuff in it. See:
http://en.wikipedia.org/wiki/Portable_Executable#.NET.2C_metadata.2C_and
_the_PE_format

It seems IronPython being faster than CPython 2.4 in some tests but I
can't say anything about that because I haven't seen that tests :-)

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From steve at REMOVEME.cybersource.com.au  Tue Sep 26 01:31:32 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Tue, 26 Sep 2006 15:31:32 +1000
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
Message-ID: <pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>

On Mon, 25 Sep 2006 13:51:55 +0200, Fredrik Lundh wrote:

>     http://www.google.com/terms_of_service.html
> 
>     "You may not send automated queries of any sort to Google's system without express
>     permission in advance from Google."

I'm not just being a pedantic weasel here, but what's an automated query?
Google's ToS is a legal document (maybe), and if both parties don't agree
on the meanings of terms, well, then it is a lousy legal document and a
recipe for trouble.

Google don't define "automated query"it, and I don't think they can. In
fact, the closest they come to defining it is to list three things they
want to prevent, NONE of which have anything to do with the distinction
between automated and non-automated.

(What on earth is "meta-searching"? If you're going to use terms which
don't have a commonly understood meaning, define what they mean.)

If I want to search for "foo", and I type "foo" into the Firefox search
box, is that an automated query?

What if I type "gg: foo" into Konqueror's address bar, which expands to
"http://www.google.com/search?q=foo"? Is it okay if I type the URL by hand
myself?

Can I use the browser to save the search page to a local HTML file? If
Google says no, how can they possibly hope to stop me?

What if I type this command into my shell?

elinks --dump "http://www.google.com/search?q=foo" > output.html

What if I type

wget "http://www.google.com/search?q=foo"

into the shell? Surely that's no more automated than typing "foo"
into Google's search box. (wget doesn't in fact work, as Google recognises
its user-agent string and blocks it, EVEN in cases where I am using wget
manually. What, can't Google themselves tell the difference between
automatic and non-automatic searching?)

Where is the line I must not cross?

The thing is, Google doesn't want people "reselling" their services, and I
respect Google's intention. But trying to draw a distinction between
"automated" and "non-automated" requests is difficult if not impossible,
as can be seen by the heavy-handed way Google blocks the manual use of
wget. I don't condone the gross abuse of Google's service, but I don't
think an artificial distinction between automated and non-automated is a
useful way to go about it.

Of course, what I think isn't important. If Google wants to write legal
contracts that won't stand up in court (speaking as somebody who isn't a
lawyer and whose legal advice is worthless), they can. But the point is, I
see no ethical nor legal reason why a user can't create a script which is
called MANUALLY by the user and does what a browser does, namely send and
receive data from websites (which may or may not include Google). 

And that, it seems to me, is what the Original Poster wanted.



-- 
Steven D'Aprano 



From jstroud at mbi.ucla.edu  Fri Sep  8 22:55:07 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 09 Sep 2006 02:55:07 GMT
Subject: Looking for a regexp generator based on a set of known string
	representative of a string set
In-Reply-To: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
References: <1157730036.498607.163210@i3g2000cwc.googlegroups.com>
Message-ID: <f2qMg.2654$MF1.1405@newssvr25.news.prodigy.net>

vbfoobar at gmail.com wrote:
> Hello
> 
> I am looking for python code that takes as input a list of strings
> (most similar,
> but not necessarily, and rather short: say not longer than 50 chars)
> and that computes and outputs the python regular expression that
> matches
> these string values (not necessarily strictly, perhaps the code is able
> to determine
> patterns, i.e. families of strings...).
> 
> Thanks for any idea
> 

I'm not sure your application, but Genomicists and Proteomicists have 
found that Hidden Markov Models can be very powerful for developing 
pattern models. Perhaps have a look at "Biological Sequence Analysis" by 
Durbin et al.

Also, a very cool regex based algorithm was developed at IBM:

    http://cbcsrv.watson.ibm.com/Tspd.html

But I think HMMs are the way to go. Check out HMMER at WUSTL by Sean 
Eddy and colleagues:

     http://hmmer.janelia.org/

     http://selab.janelia.org/people/eddys/

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From http  Fri Sep 29 12:47:12 2006
From: http (Paul Rubin)
Date: 29 Sep 2006 09:47:12 -0700
Subject: Making sure script only runs once instance at a time.
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<mailman.949.1159543590.10491.python-list@python.org>
	<W53645725.803.1323.1@mx-extra>
	<mailman.957.1159547987.10491.python-list@python.org>
Message-ID: <7xac4izkkv.fsf@ruckus.brouhaha.com>

"Tim Williams" <tim at tdw.net> writes:
> My reply was in response to a post that mentioned a known problem with
> this,  what happens when the previously running program doesn't exit
> gracefully, and leaves the directory in place ??

Don't use the presence or absence of a file as a lock.  Have the file
there all the time, and have the app open it and use fcntl to get an
exclusive kernel lock on the file descriptor.  That lock should go
away when the process exits, so you don't have to worry about cleaning
it up.  See "man fcntl" for details.


From johnjsal at NOSPAMgmail.com  Fri Sep 29 15:52:45 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 19:52:45 GMT
Subject: storing variable names in a list before they are used?
Message-ID: <hQeTg.57$1n3.320@news.tufts.edu>

If I want to have a list like this:

[(first_name, 'First Name:'), (last_name, 'Last Name:').....]

where the first part of each tuple is a variable name and the second 
part is a label for the user to see, such as a form like this:

First Name: ________
Last Name:  ________

(the variables would store whatever information is entered in the text 
boxes to the right of each label. I'm doing it this way so I can write a 
loop to construct my GUI components).

how would I go about putting these variable names in a list? I know I 
can't leave them as above, but if I put them in as a string, then how do 
I later "transform" them into an actual variable for assign, such as:

first_name = widget.get_text()

Is there some kind of idiom that does this sort of work?

Thanks.


From martin at v.loewis.de  Sat Sep  9 12:51:33 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 09 Sep 2006 18:51:33 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <edp56g$66u$1@foggy.unx.sas.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
Message-ID: <4502F115.6080202@v.loewis.de>

Kevin D. Smith schrieb:
> Then there is Mike Fletcher's web page
> (http://www.vrplumber.com/programming/mstoolkit/) that describes in
> detail how to build extensions, but most of the links to external
> software are no longer valid.  I think it's safe to say that I am
> completely lost, as there appears to be no authoritative, up-to-date
> description on how to make this work.

If all else fails, buy a copy of Visual Studio 2003. They are available
fairly cheap at Ebay.

Regards,
Martin


From johnjsal at NOSPAMgmail.com  Tue Sep 19 15:23:50 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Tue, 19 Sep 2006 19:23:50 GMT
Subject: new string method in 2.5 (partition)
In-Reply-To: <4510425e$0$12250$636a55ce@news.free.fr>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
Message-ID: <atXPg.9$1n3.69@news.tufts.edu>

Bruno Desthuilliers wrote:

> Err... is it me being dumb, or is it a perfect use case for str.split ?

Hmm, I suppose you could get nearly the same functionality as using 
split(':', 1), but with partition you also get the separator returned as 
well.

> There are IMVHO  much exciting new features in 2.5 (enhanced generators, 
> try/except/finally, ternary operator, with: statement etc...)

I definitely agree, but I figure everyone knows about those already. 
There are also the startswith() and endswith() string methods that are 
new and seem neat as well.


From eric_brunel at despammed.com  Fri Sep 22 04:45:52 2006
From: eric_brunel at despammed.com (Eric Brunel)
Date: Fri, 22 Sep 2006 10:45:52 +0200
Subject: Python and CORBA
References: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
	<op.tf727isjrqur0o@eb.pragmadev>
	<1158836775.901518.85790@d34g2000cwd.googlegroups.com>
	<4nfhbbFa28jqU1@uni-berlin.de>
Message-ID: <op.tf9umqm1rqur0o@eb.pragmadev>

On Thu, 21 Sep 2006 15:11:07 +0200, Diez B. Roggisch <deets at nospam.web.de>  
wrote:
> AFAIK Fnorb also had license issues - I'm not entirely sure of that, but
> better check it.

The earlier versions seem to have been somewhat proprietary, but the  
latest one should be as free as Python is. Extract from the license  
agreement (just before the legalese starts):

"""
The intent of this license is to grant you the same freedoms to use fnOrb
that you enjoy under the Python 2.2 License  
(http://www.python.org/2.2/license.html).
"""

So there should be no problem with that (AFAICT, but I'm no lawyer...)

HTH
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in  
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"


From cvanarsdall at mvista.com  Tue Sep 26 15:57:01 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Tue, 26 Sep 2006 12:57:01 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <zkfSg.30$1n3.400@news.tufts.edu>
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <4519860D.9050805@mvista.com>

John Salerno wrote:
> It's a nice thought that a person can earn a living programming with 
> Python, which is fun enough to use just for its own sake. But for 
> someone like me (i.e. no programming experience) it's always a little 
> disheartening to see that most (if not all) job descriptions that ask 
> for Python still require some C/C++ or other language knowledge. I 
> suppose this isn't an issue if you studied CS in college, because you 
> would have been exposed to many languages.
>
>   
Well, the thing is, once you can program in one language you can pretty 
much move around to other languages pretty easily (unless they are 
twisted, but rarely have I been asked to use something crazy).  At my 
job I've written about 30 lines of C code in the 2 years I've been 
here.  The rest has been almost entirely Python.  Occasionally other 
languages come up, you just kinda do what you need to on the fly or get 
a book when you get stuck.  There's so many examples on the web you can 
go from zero to productive fairly quickly.  Of course with anything it 
takes time to get good with a language, I'm not say you could be an 
expert but you should be able to look at some C examples and gather most 
of what you need to construct a simple program.  From there hit your 
references up and go for it. 


> But what if you are an expert Python program and have zero clue about 
> other languages? Can you still earn a living that way, or do most/all 
> companies require multiple language proficiency?
>   
My team mates know strictly Python (and a little shell) and do just 
fine.  I know very few programmers who truly only know a single 
language.  In fact the fact that I know Python has gotten me calls from 
several recruiters recently.  Seems like python is on the up and up.   
Anyhow, the longer you code the more languages you'll come into contact 
with.  It just usually works out that way.  Between school and work I've 
learned Python, Perl, C, C++, Fortran, and Java.  I was only taught C, 
once I had those concepts down I found usually I just needed to learn 
the syntax. 

> (I suppose this isn't exactly a Python problem, either. I'm sure even 
> companies that don't use Python still use multiple languages. Maybe it 
> isn't a good idea to focus entirely on a single language, depending on 
> the job at hand.)
>   
Be familiar with lots of tools, get good at the ones you feel will help 
you get the job done.  No doubt you'll be most proficient in the one you 
need to use the most, but you'll always need to move around, its 
definitely a good job skill to have.



-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From amit.man at gmail.com  Mon Sep 11 10:48:04 2006
From: amit.man at gmail.com (noro)
Date: 11 Sep 2006 07:48:04 -0700
Subject: efficient text file search.
In-Reply-To: <mailman.249.1157979719.5279.python-list@python.org>
References: <NYOBGCEXSMTP20WO6hm000003b5@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
	<mailman.249.1157979719.5279.python-list@python.org>
Message-ID: <1157986083.091290.197570@m73g2000cwd.googlegroups.com>

can you add some more info, or point me to a link, i havn't found
anything about binary search in mmap() in python documents.

the files are very big...

thanks
amit
Bill Scherer wrote:
> noro wrote:
>
> >Is there a more efficient method to find a string in a text file then:
> >
> >f=file('somefile')
> >for line in f:
> >    if 'string' in line:
> >         print 'FOUND'
> >
> >?
> >
> >BTW:
> >does "for line in f: " read a block of line to te memory or is it
> >simply calls f.readline() many times?
> >
> >thanks
> >amit
> >
> >
> If your file is sorted by some key in the data, you can build a very
> fast binary search with mmap in Python.



From deets at nospam.web.de  Tue Sep 19 13:27:36 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 19:27:36 +0200
Subject: Curious issue with simple code
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
Message-ID: <4nank8F8vokfU1@uni-berlin.de>

codefire wrote:

> Hi,
> 
> I have some simple code - which works...kind of..here's the code:
> 
> [code]
> import os
> 
> def print_tree(start_dir):
>     for f in os.listdir(start_dir):
>         fp = os.path.join(start_dir, f)
>         print fp
>         if os.path.isfile(fp): # will return false if use f here!
>             if os.path.splitext(fp)[1] == '.html':
>                 print 'html file found!'
>         if os.path.isdir(fp):
>             print_tree(fp)
> 
> print os.path
> print_tree(r'c:\intent\docn')
> [/code]
> 
> As above it all works as expected. However, on the marked line, if I
> use f instead of fp then that condition returns false! Surely,
> isfile(f) should return true, even if I just give a filename, rather
> than the full path?

Of course not, unless a file with that very name exists in the current
working directory. Otherwise, where would be the difference between a
full-path and the leaf path?

Diez


From ldo at geek-central.gen.new_zealand  Wed Sep 27 05:00:03 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 21:00:03 +1200
Subject: Makin search on the other site and getting data and writing in xml
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>
	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
	<mailman.640.1159254809.10491.python-list@python.org>
	<efcuf3$qht$2@lust.ihug.co.nz> <efd6n2$fbs$1@sea.gmane.org>
	<mailman.777.1159341826.10491.python-list@python.org>
Message-ID: <efdego$o1c$3@lust.ihug.co.nz>

In message <mailman.777.1159341826.10491.python-list at python.org>, Ben Finney
wrote:

> Steve Holden <steve at holdenweb.com> writes:
> 
>> Lawrence D'Oliveiro wrote:
>> > Steve Holden wrote:
>> >>The fact remains that Google can chop your searching ability off
>> >>at the knees ...
>> > No they can't. They can only chop off your ability to use Google.
>> > 
>> [sigh]. Right, Lawrence, sorry I wasn't quite explicit enough for you.
> 
> Seems like a fairly important distinction. Google has the power to
> "chop your searching ability off at the knees" only to the extent that
> you grant them that power.

Saying "search" when you mean "Google" is like saying "using a PC" when you
mean "using Microsoft Windows".


From titan516 at vip.sina.com  Fri Sep 29 12:48:24 2006
From: titan516 at vip.sina.com (titan516)
Date: Fri, 29 Sep 2006 09:48:24 -0700 (PDT)
Subject: screen capture
In-Reply-To: <1131981794.231399.275940@f14g2000cwb.googlegroups.com>
References: <1131981794.231399.275940@f14g2000cwb.googlegroups.com>
Message-ID: <6568720.post@talk.nabble.com>




Craig W wrote:
> 
> I need to take a screen shot of the computer screen.
> 
> I am trying to use PIL and I saw there is ImageGrab...however it only
> works on Windows.  Is there a platform-independent ability to work
> around this?
> 
> thanks
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 
> 


Maybe you can try  http://www.acasystems.com ACA capture PRO , it , i
think,can fix your problem well..ACA capture is mutli-function screenshots
software, Not only image capture, but also video capture...

you can ge more information about ACA capture pro from 
http://www.acasystems.com/en/screencapturepro/overview.htm here 


-- 
View this message in context: http://www.nabble.com/screen-capture-tf549201.html#a6568720
Sent from the Python - python-list mailing list archive at Nabble.com.



From bmearns at coe.neu.edu  Thu Sep 14 09:42:34 2006
From: bmearns at coe.neu.edu (bmearns)
Date: 14 Sep 2006 06:42:34 -0700
Subject: Outbound port on sockets
In-Reply-To: <mailman.90.1158240404.10491.python-list@python.org>
References: <1158236592.922371.47380@p79g2000cwp.googlegroups.com>
	<1158238687.403115.250480@m73g2000cwd.googlegroups.com>
	<1158239351.008092.170070@i42g2000cwa.googlegroups.com>
	<1158239526.673977.312840@p79g2000cwp.googlegroups.com>
	<mailman.90.1158240404.10491.python-list@python.org>
Message-ID: <1158241354.764008.214710@m73g2000cwd.googlegroups.com>

Passive mode is implemented, the client isn't trying to use it.
Besides, that doesn't really help me anyway, all it means is that I
have to resolve port forwarding for the server, instead of for the
client.

I think what this basically comes down to is that either with PASV or
PORT, there's a relatively arbitrary port number being specified, and I
can't figure out how to get my router to forward it since I don't know
what it will be in advance, short of forwarding all the 64 thousand
some odd valid ports.

The thing that gets me is that I can connect to the other FTP servers,
and (according to the responses echoed by the command line FTP client),
they're using PORT, not PASV. So somehow, my client is specifying some
arbitrary port for the server to connect to, and that port is actually
being forwarded through my router.

-Brian

Sergei Organov wrote:
> "bmearns" <bmearns at coe.neu.edu> writes:
>
> > Quick follow up, I'm able to connect to other external FTP sites behind
> > my firewall and router, no problem.
>
> You've been told already to implement PASV command in your server (then
> client will be able to use so called passive mode).
> 
> -- Sergei.



From onurb at xiludom.gro  Fri Sep  1 07:19:33 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 13:19:33 +0200
Subject: Django website
In-Reply-To: <mailman.10246.1157107975.27775.python-list@python.org>
References: <mailman.10246.1157107975.27775.python-list@python.org>
Message-ID: <44f81746$0$27349$636a55ce@news.free.fr>

Antal Rutz wrote:
> hi,
> 
> is there something wrong with django's website (djangoproject.com)

Obviously, yes.

> or I have problems?

I don't think so.

I warned them on the google group, I think things should be fixed soon.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From skip at pobox.com  Mon Sep 25 22:10:52 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 21:10:52 -0500
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <17688.35884.846220.693992@montanaro.dyndns.org>


    walter> If so, I doubt there are many. 

You're kidding, right?

Skip


From jstroud at mbi.ucla.edu  Sat Sep 30 15:23:41 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 30 Sep 2006 19:23:41 GMT
Subject: loop over list and modify in place
In-Reply-To: <mailman.1006.1159638327.10491.python-list@python.org>
References: <mailman.1006.1159638327.10491.python-list@python.org>
Message-ID: <1vzTg.7077$GR.670@newssvr29.news.prodigy.net>

Daniel Nogradi wrote:
> Is looping over a list of objects and modifying (adding an attribute
> to) each item only possible like this?
> 
> mylist = [ obj1, obj2, obj3 ]
> 
> for i in xrange( len( mylist ) ):
>    mylist[i].newattribute = 'new value'
> 
> 
> I'm guessing there is a way to do this without introducing the (in
> principle unnecessary) index i, so what I'm really looking for is a
> looping method which doesn't pass references to the values of the
> items but to the items themselves.

You can use map, or if you don't map, like list comprehension:

py> class B(object):
...   def __repr__(self):
...     return '<B>: %s' % self.value
...   def __init__(self):
...     self.value = None
...
py> alist = [B() for i in xrange(5)]
py> alist
[<B>: None, <B>: None, <B>: None, <B>: None, <B>: None]
py> [setattr(b,'value',v+5) for (v,b) in enumerate(alist)]
[None, None, None, None, None]
py> alist
[<B>: 5, <B>: 6, <B>: 7, <B>: 8, <B>: 9]
py> map(setattr, alist, ['value']*5, xrange(5))
[None, None, None, None, None]
py> alist
[<B>: 0, <B>: 1, <B>: 2, <B>: 3, <B>: 4]

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From p.lavarre at ieee.org  Thu Sep 28 19:07:21 2006
From: p.lavarre at ieee.org (p.lavarre at ieee.org)
Date: 28 Sep 2006 16:07:21 -0700
Subject: eval(source, {'builtins': {}}) archived as Faq
Message-ID: <1159484841.655115.15190@m7g2000cwm.googlegroups.com>

Absent from http://www.python.org/doc/current/lib/built-in-funcs.html
but now copied to the Faq list of http://pyfaq.infogami.com/suggest,
from these clp archives:

///

Q: How can I tell Python to calculate what quoted strings and numbers
mean, without also accidentally accepting OS commands as input?

A: eval(source, {'builtins': {}})

Note: What eval may do to you remains as surprising as ever if you
mistype this idiom as: eval(source, {})

Note: This idiom makes sense of ordinary Python literals (such as 010,
0x8, 8.125e+0, and "\x45ight").  This idiom also correctly interprets
simple literal expressions, such as 64**0.5.



From jstroud at mbi.ucla.edu  Thu Sep 21 22:46:33 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 02:46:33 GMT
Subject: Building things with setup.py
In-Reply-To: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
Message-ID: <d8IQg.4153$6S3.3658@newssvr25.news.prodigy.net>

James Stroud wrote:
> Hello All,
> 
> This is annoying. I am trying to build scipy right now but every .so 
> file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl -shared" 
> to the ld flags.
> 
> Main Question: When building with "setup.py", where can I include this 
> information so I don't have to link every .so file by hand?
> 
> Also, why would this not be caught by the developers of scipy and numpy? 
> What factors go into needing to specify libraries and to properly link 
> .so files manually? Certainly the enthought didn't forget to test the 
> build process, so why would my machine be special in this regard?
> 
> I'm running Linux FC4 on a dual intel p4 (~3.2 GHz) with sundry 
> libraries in non-standard places. Is this non-standard part what's 
> killing me?
> 
> James
> 

Well I added those arguments to $LDFLAGS, but it seemed like a pretty 
miserable hack, especially the "-shared" part.

I'm still curious how to make a 3rd party setup.py work correctly.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From stephen at theboulets.net  Mon Sep 25 16:38:25 2006
From: stephen at theboulets.net (stephen at theboulets.net)
Date: 25 Sep 2006 13:38:25 -0700
Subject: Printing a percent sign
Message-ID: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>

Hi all. How do I escape the "%" sign in a print statement so that it
prints? Thanks.

Stephen



From steve at holdenweb.com  Fri Sep 22 12:30:33 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 12:30:33 -0400
Subject: Python programs always open source?
In-Reply-To: <ef0vlh$a15$1@wake.carmen.se>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>	<mailman.227.1158581355.10491.python-list@python.org>	<450eb358$0$19900$4d3efbfe@news.sover.net>	<mailman.233.1158592608.10491.python-list@python.org>	<450ebb84$0$19909$4d3efbfe@news.sover.net>	<mailman.246.1158625452.10491.python-list@python.org>
	<ef0vlh$a15$1@wake.carmen.se>
Message-ID: <ef131o$ku9$1@sea.gmane.org>

Magnus Lycka wrote:
> Ben Finney wrote:
> 
>>Leif K-Brooks <eurleif at ecritters.biz> writes:
>>
>>
>>>>>Ben Finney wrote:
>>>>>
>>>>>>So long as you're not distributing some or all of Python itself,
>>>>>>or a derivative work, the license for Python has no legal effect
>>>>>>on what license you choose for your own work.
>>
>>>I was replying to Ben Finney's claim that in a hypothetical world
>>>where Python was licensed under the GPL, there would still be no
>>>restriction on distributing Python programs under a closed-source
>>>license.
>>
>>My claim (and IANAL) is that it doesn't matter *what* license Python
>>is distributed under; unless you do something with Python that is a
>>right of the copyright holder, such as distributing part or all of
>>Python, the copyright license terms of Python have no legal effect on
>>what license you choose for your own work.
> 
> 
> As I read the GPL, you should be ok if you don't copy, distribute or
> modify Python (if Python was GPL). 

Since Python *isn't* GPL, can we please move this discussion to 
universe.hypothetical.discuss?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jon+usenet at unequivocal.co.uk  Tue Sep 26 09:41:57 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 13:41:57 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>
	<mailman.581.1159200379.10491.python-list@python.org>
	<slrnehg086.7sa.jon+usenet@snowy.squish.net>
	<mailman.585.1159204290.10491.python-list@python.org>
	<slrnehg3v0.7sa.jon+usenet@snowy.squish.net>
	<mailman.636.1159253196.10491.python-list@python.org>
	<slrnehhtdv.loa.jon+usenet@snowy.squish.net>
	<mailman.678.1159277044.10491.python-list@python.org>
Message-ID: <slrnehibgn.9o0.jon+usenet@snowy.squish.net>

In article <mailman.678.1159277044.10491.python-list at python.org>, Fredrik Lundh wrote:
>> It's a pity he's being rude when presented with well-informed comment
>> then.
> 
> since when is the output of
> 
[snip code]
> 
> well-informed?  heck, it doesn't even pass the turing test ;-)

Since when did that bear any resemblance to what I have said?

Are you going to grow up and start addressing the substantial points
raised, rather than making puerile sarcastic remarks?

An apology from you would not go amiss.


From tyler.retzlaff at gmail.com  Mon Sep  4 04:29:40 2006
From: tyler.retzlaff at gmail.com (tyler)
Date: 4 Sep 2006 01:29:40 -0700
Subject: fcntl() and packing structs with unions.
Message-ID: <1157358579.995385.109670@74g2000cwt.googlegroups.com>

I'm having some trouble building a proper argument for an ioctl call.
The operation I'm working with is TUNSETIFF _IOW('T', 202, int) which
takes a struct ifreq as the arg.  Could someone familiar with the
struct (usually defined in net/if.h) tell me how the heck to encode it
using the struct/array module?  An example would be fantastic.



Thanks



From vatamane at gmail.com  Sun Sep 24 02:40:13 2006
From: vatamane at gmail.com (Nick Vatamaniuc)
Date: 23 Sep 2006 23:40:13 -0700
Subject: Difficulty with maxsplit default value for str.split
References: <pan.2006.09.24.05.48.22.103431@REMOVE.THIS.cybersource.com.au>
Message-ID: <1159080013.505949.256330@d34g2000cwd.googlegroups.com>

Steven,

According to the current Python source the default value of
maxsplit=-1. I think you can count on that as I don't think there would
be a reason to change it in the future. If you are really worried about
it then your version of calling a particular version of split should
work.

By the way, if you use Python 2.5 and when your maxsplit function is
called there is a clear common case  in regards to maxsplit, you could
use the new conditional expression. Say most of the time mysplit is
used with a default value of maxsplit, then you can re-write your 'if'
code as
---------------------
result=S.split(sep) if maxsplit is None else S.split(sep,maxsplit)
---------------------

-Nick Vatamaniuc



Steven D'Aprano wrote:
> I'm having problems passing a default value to the maxsplit argument of
> str.split. I'm trying to write a function which acts as a wrapper to
> split, something like this:
>
> def mysplit(S, sep=None, maxsplit=None):
>     pre_processing()
>     result = S.split(sep, maxsplit)
>     post_processing()
>     return result
>
> But the split method doesn't accept a value of None for maxsplit, and I
> don't know what default value I should be using. Passing 0 as the default
> isn't correct, because then it splits zero times.
>
> By experimentation, I have discovered that passing -1 as the default
> instead of None *appears* to work, but I'm not sure if I can rely on it or
> if that is an accidental implementation detail. According to the
> documentation at
> http://docs.python.org/lib/string-methods.html#string-methods
>
> split([sep [,maxsplit]])
>     Return a list of the words in the string, using sep as the delimiter
>     string. If maxsplit is given, at most maxsplit splits are done. (thus,
>     the list will have at most maxsplit+1 elements). If maxsplit is not
>     specified, then there is no limit on the number of splits (all
>     possible splits are made).
>
>
> If I take that literally, then the correct way to wrap split is something
> like this:
>
> def mysplit(S, sep=None, maxsplit=None):
>     pre_processing()
>     if maxsplit is None:
>         # don't specify maxsplit
>         result = S.split(sep)
>     else:
>         result = S.split(sep, maxsplit)
>     post_processing()
>     return result
>
> Is it safe for me to pass -1 as the default to maxsplit, meaning
> "unlimited splits"? Should the docs be fixed to mention that?
> 
> Thanks,
> 
> 
> 
> -- 
> Steven.



From gatti at dsdata.it  Wed Sep 13 03:35:16 2006
From: gatti at dsdata.it (gatti at dsdata.it)
Date: 13 Sep 2006 00:35:16 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <mailman.372.1158079916.5279.python-list@python.org>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<mailman.372.1158079916.5279.python-list@python.org>
Message-ID: <1158132916.302348.189580@h48g2000cwc.googlegroups.com>


Frederic Rentsch wrote:


>    If you need regexes, why not just reverse-sort your expressions? This
> seems a lot easier and faster than writing another regex compiler.
> Reverse-sorting places the longer ones ahead of the shorter ones.

Unfortunately, not all regular expressions have a fixed match length.
Which is the longest of, for example, /(abc)?def/ and /(def)?ghi/
depends on the input. 

Lorenzo Gatti



From eric.talevich at gmail.com  Fri Sep 22 21:05:58 2006
From: eric.talevich at gmail.com (Eric)
Date: 22 Sep 2006 18:05:58 -0700
Subject: Python Input from keyboard
References: <1158961811.122841.163450@e3g2000cwe.googlegroups.com>
Message-ID: <1158973558.691268.250420@m73g2000cwd.googlegroups.com>

utab wrote:
> hi,
> I could not understand why python stdin and stdout are not explained in
> any of the tutorials on the net,
>
> I want to read some input continuously from keyboard and then I would
> like to process these input.
>
> I have a code like this but getting errors, I would like to terminate
> when there is an empty string in the input, why is not this easy as the
> "cin" or "scanf". I had to search for even this easy operation. Is
> there a way to send EOF signal to terminate input(ctrl+??????)
>
> #!/usr/bin/env python
> import sys, math       # load system and math module
> x=[]
> y=[]
> IN=True
> print 'input x and y values :   '
> while IN:
>         xt,yt=input()
>
>         if (xt==' ' or yt==' '):
>                 print 'you have not entered x or y, quiting'
>                 break
>         else:
>                 xt= float(xt);yt=float(yt)
>                 x.append(xt);y.append(yt)
>
> for i in range(x):
>         print x[i]


Summary:

std::cout << "Statement\n";
is
print "Statement"

std::cin << value;
is
value = raw_input()


std::cout << "Prompt:"
std::cin << value;
is
value = raw_input("Prompt:")


It's a little assymetrical, but useful. Lower-level functions also
exist in the sys module as stdin, stdout and stderr.



From ndbecker2 at gmail.com  Mon Sep 11 11:53:01 2006
From: ndbecker2 at gmail.com (Neal Becker)
Date: Mon, 11 Sep 2006 11:53:01 -0400
Subject: Cool!  A python course!
Message-ID: <ee40q3$itp$1@sea.gmane.org>

http://www.epp.jhu.edu/schedule/courseinfo.php?deptid=525&coursenum=492



From kenneth.m.mcdonald at sbcglobal.net  Sat Sep 30 01:33:00 2006
From: kenneth.m.mcdonald at sbcglobal.net (kenneth.m.mcdonald at sbcglobal.net)
Date: Sat, 30 Sep 2006 05:33:00 GMT
Subject: Python/UNO/OpenOffice?
Message-ID: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>

Are then any currently active and reasonably mature Python plugins/
apis/whatever for programming/scripting OpenOffice? The page I've
found is http://udk.openoffice.org/python/python-bridge.html, but
it was last updated more than a year ago.

Thanks,
Ken


From mcPas.De.Spam at mclaveauPas.De.Spam.com  Sun Sep 17 14:46:09 2006
From: mcPas.De.Spam at mclaveauPas.De.Spam.com (Michel Claveau)
Date: Sun, 17 Sep 2006 20:46:09 +0200
Subject: Hardlinks on NTFS
References: <450D81BB.20005@freakmail.de>
	<mailman.209.1158517913.10491.python-list@python.org>
Message-ID: <mn.8cde7d69f47b22ca.34209@mclaveauPas.De.Spam.com>

Hi!

NTFS hardlink exists before others filesystem.
Please, send question to other FS...

-- 
@-salutations

Michel Claveau




From toby at tobiah.org  Thu Sep 28 11:15:13 2006
From: toby at tobiah.org (tobiah)
Date: Thu, 28 Sep 2006 08:15:13 -0700
Subject: best way to get data into a new instance?
In-Reply-To: <j%QSg.44$1n3.417@news.tufts.edu>
References: <j%QSg.44$1n3.417@news.tufts.edu>
Message-ID: <451bda33$0$19726$88260bb3@free.teranews.com>


> So I'm wondering, is the best way to get all this information into the 
> object to just have a really long __init__ method that takes each argument?

As was pointed out, you might ask that absolutely essential information
be passed to the constructor such as employee id#, but other then
that, I think that it is more usual to do:

class Employee:

	__init__(self, id):
		self.id = id

e = Employee(32445)

... later


e.firstname = 'foo'
e.lastname = 'bar'

... more as the information comes about.

-- 
Posted via a free Usenet account from http://www.teranews.com



From pipiten at gmail.com  Tue Sep 19 10:23:45 2006
From: pipiten at gmail.com (Pipiten)
Date: 19 Sep 2006 07:23:45 -0700
Subject: Pyglade, gtk, howto write more efficiently, and waste less code?
Message-ID: <1158675825.605612.313830@i42g2000cwa.googlegroups.com>

Hi everybody, i` m new in this group, and python so.., my greetings to
everybody here.
I wrote a little program, in wich i do this:
(I have several "Select File" buttons, one for each file (in this case,
an image) wich has an text_entry, so i can add a comment for each
picture.)

def on_button1_clicked(self,widget):
	   """Button 1 pressed"""
	   image_file1 = FileSelection(self)
	   self.path1.set_text(image_file1)
	   self.image1.set_from_file(image_file1)
	   self.image1.show()

   def on_button2_clicked(self,widget):
	   """Button 2 pressed"""
	   image_file2 = FileSelection(self)
 	   self.path2.set_text(image_file2)
	   self.image2.set_from_file(image_file2)
	   self.image2.show()

   def on_button3_clicked(self,widget):
	   """Button 3 pressed"""
	   image_file3 = FileSelection(self)
 	   self.path3.set_text(image_file3)
	   self.image3.set_from_file(image_file3)
	   self.image3.show()

   def on_button4_clicked(self,widget):
	   """Button 4 pressed"""
	   image_file4 = FileSelection(self)
 	   self.path4.set_text(image_file4)
	   self.image4.set_from_file(image_file4)
	   self.image4.show()

   def on_button5_clicked(self,widget):
	   """Output dir button pressed"""
	   outputpath = FileSelection(self)
 	   self.path5.set_text(outputpath)


Is there any way to do this, with a for bucle, or something like that?.
For example, if i want to to the same, 25 times, not to copy and paste.
Does anyone knows how to do that?, write it one time, and flexible to
use many times.
( I think it should be with the variables sent by parameters, isn?t? )



Thanks a lot, have a nice day!



From paul at boddie.org.uk  Wed Sep 13 08:02:24 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 13 Sep 2006 05:02:24 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<45071c6d$0$576$ed2619ec@ptn-nntp-reader03.plus.net>
	<1158128695.301849.148210@p79g2000cwp.googlegroups.com>
	<1158137967.711307.11190@h48g2000cwc.googlegroups.com>
	<1158145030.957893.51010@h48g2000cwc.googlegroups.com>
Message-ID: <1158148944.626809.128870@e3g2000cwe.googlegroups.com>

Simon Wittber wrote:
> Paul Boddie wrote:
> > Rumour has it that recent versions of Windows provide fork-like
> > semantics through a system call. Your mission is to integrate this
> > transparently into the standard library's os.fork function. ;-)
>
> I'm not sure I'm up to this kind of low level stuff, though if the itch
> really starts to _itch_, I might have a crack at scratching it. :-)

Here's a message which might provide a decent starting point:

http://groups.google.com/group/comp.lang.python/msg/fdadd7b615e7824b

Paul



From dale at riverhall.nospam.co.uk  Wed Sep 13 05:24:07 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Wed, 13 Sep 2006 10:24:07 +0100
Subject: Inter process signalling
References: <GxBNg.6611$Dj4.5066@fe11.usenetserver.com>
	<Xns983D66FE66013duncanbooth@127.0.0.1>
Message-ID: <Y6QNg.1850$pk4.1211@fe37.usenetserver.com>

Duncan Booth wrote:

> Dale Strickland-Clark <dale at riverhall.nospam.co.uk> wrote:
> 
>> In Linux this is easy with 'signal' and 'kill' but how can I get one
>> Python process to signal another (possibly running as a service)?
>> 
>> All I need is a simple prod with no other data being sent and none
>> being returned - except that the signal was delivered.
>> 
>> Receiving a signal should generate an interrupt. I'm not looking for a
>> solution the involves polling.
>> 
> Lots of ways. Basically all involving creating a thread which waits on an
> event and then calls your code when the event is generated.
> 
> You can use semaphores, named pipes &c.; you could create a windows
> message queue and simply send the process a message when you want to alert
> it; you could create a COM server and call a method on it; you could use
> asynchronous procedure calls (APCs) (but you still need to ensure that
> there is a thread in an alertable wait state).
> 
> If the code you want to signal is running as a service then the easiest
> way to signal it is to call win32service.ControlService with a user
> defined service code. That gives you 127 signals to play with, and
> Python's win32 library will simply call the SvcOther method within your
> service code (although not of course using the same thread as the actual
> service is running on).

Thanks Duncan.
-- 
Dale Strickland-Clark
Riverhall Systems - www.riverhall.co.uk



From tuomas.vesterinen at pp.inet.fi  Sun Sep 24 09:56:59 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Sun, 24 Sep 2006 13:56:59 GMT
Subject: gtk.Entry Colors
Message-ID: <L8wRg.16872$mj5.1449@read3.inet.fi>

I would like to manipulate PyGTK Entry widget's background and 
foreground colors. Is it possible? How?

Tuomas


From jon+usenet at unequivocal.co.uk  Mon Sep 25 10:08:23 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 14:08:23 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
Message-ID: <slrnehfomg.6tm.jon+usenet@snowy.squish.net>

In article <mailman.569.1159192888.10491.python-list at python.org>, Fredrik Lundh wrote:
>> There's nothing to say that cgi.escape should take them both into account
>> in the one function
> 
> so what exactly are you using cgi.escape for in your code ?

To escape characters so that they will be treated as character data
and not control characters in HTML.

>> What precisely do you think it would "break"?
> 
> existing code, and existing tests.

I'm sorry, that's not good enough. How, precisely, would it break
"existing code"? Can you come up with an example, or even an
explanation of how it *could* break existing code?


From duncan.booth at invalid.invalid  Thu Sep 28 10:30:51 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 28 Sep 2006 14:30:51 GMT
Subject: remove the last character or the newline character?
References: <1159452883.543521.170370@i42g2000cwa.googlegroups.com>
Message-ID: <Xns984C9DCBF7BE0duncanbooth@127.0.0.1>

"Daniel Mark" <danielmarkhot at gmail.com> wrote:


> In [2]: fileName = fileName[0:len(fileName)-1)]   # remove the '\n'

To chop the last character regardless of what it is:

  fileName = fileName[:-1]

You don't need the 0 since thats the default, and you can use a negative 
index instead of subtracting from len(x). 

> Question two:
> Does python provide any function that can remove the newline character
> from a string if it exists?
> 

To remove all trailing whitespace:

    fileName = fileName.rstrip()

to just remove a newline:

    fileName = fileName.rstrip('\n')


From hpsekhon at googlemail.com  Thu Sep  7 09:33:51 2006
From: hpsekhon at googlemail.com (Hari Sekhon)
Date: Thu, 07 Sep 2006 14:33:51 +0100
Subject: sending emails using python
In-Reply-To: <12g07gf97898rff@corp.supernews.com>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>	<B51712964.236.7189.1@mx-extra>	<mailman.111.1157617795.5279.python-list@python.org>	<slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>
	<12g07gf97898rff@corp.supernews.com>
Message-ID: <45001FBF.4070300@googlemail.com>

Grant Edwards wrote:
> On 2006-09-07, Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> wrote:
>   
>> Tim Williams enlightened us with:
>>     
>>> Can you send email via it using outlook express or a similar
>>> POP3/IMAP mail client?
>>>       
>> Wouldn't you use a SMTP client to send email?
>>     
>
> I would, but I don't use exchange server. :)
>
> The one exchange server I used in the past didn't accept SMTP
> mail.
>
>   
errr, I used to admin Exchange, if it does accept SMTP then how could it 
function as a live mail server?


Hari Sekhon
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From pDOTpagel at gsf.de  Mon Sep  4 06:45:43 2006
From: pDOTpagel at gsf.de (Philipp Pagel)
Date: Mon, 4 Sep 2006 10:45:43 +0000 (UTC)
Subject: Better way to replace/remove characters in a list of strings.
References: <1157365598.886096.255420@m73g2000cwd.googlegroups.com>
Message-ID: <edh04n$o0g$1@news.lrz-muenchen.de>

Chris Brat <chrisBrat at gmail.com> wrote:
> Is there a better way to replace/remove characters (specifically ' and
> " characters in my case, but it could be anything) in strings in a
> list, than this example to replace 'a' with 'b':

x = map(lambda foo: foo.replace('a', 'b'), x)

cu
	Philipp

-- 
Dr. Philipp Pagel                          Tel. +49-8161-71 2131
Dept. of Genome Oriented Bioinformatics    Fax. +49-8161-71 2186
Technical University of Munich
http://mips.gsf.de/staff/pagel


From jjl at pobox.com  Thu Sep  7 17:53:32 2006
From: jjl at pobox.com (John J. Lee)
Date: Thu, 07 Sep 2006 21:53:32 GMT
Subject: Automate Web Configuration
References: <1157651299.957385.96190@b28g2000cwb.googlegroups.com>
	<mailman.133.1157656214.5279.python-list@python.org>
Message-ID: <871wqnny1v.fsf@pobox.com>

Steve Holden <steve at holdenweb.com> writes:

> D wrote:
> > I would like to write a program that will automate the configuation of
> > a firewall or router via HTTPS.  So, I need to import the applicable
> > certificate, and be able to configure the unit as if I was
> > typing/selecting the appropriate fields manually using a web browser.
> > If there is a command-line based tool that would allow me to do this, I
> > would be more than willing to give it a try.  Otherwise, is there a
> > Python library that would do the same?  Thanks.
> >
> Look for the Mechanize and ClientForm libraries: they can be used to
> automate all sorts of web tasks.

Note that neither mechanize nor the standard library do a great job
with HTTPS client certificates (nor server certificates, for that
matter: those are not checked at all): You have to convert your
certificate file to the right format (e.g. using the "openssl" program
from OpenSSL -- the mechanize API docs explain how), and the only way
to supply the password right now is on the console.  Hmm, it occurs to
me right now that maybe if your key has no password, it won't insist
on console input?  Perhaps the same applies if you're running some
sort of keyserver?  I haven't looked at the OpenSSL API docs to check.
If not, no doubt one could improve mechanize's behaviour here by using
something like PyOpenSSL or M2Crypto (or use the facilities provided
by those libraries directly -- see below).

(If you want to use mechanize right now I recommend checking it out
from SVN rather than using the last-released version.  The official
stable release is coming "RSN".  Getting docs done is hard work!-)

A few other HTTPS problems (both stdlib and mechanize are affected):

- No special CONNECT support for HTTPS proxies (you can do it, but
  it's a pain)

- I think socket timeouts don't work for HTTPS (I forget why, so not
  sure what work-arounds would apply)


If any of those limitations affect you (note they DON'T affect lots of
people doing HTTPS), try M2Crypto or perhaps PyOpenSSL (I don't really
know either library, but I'm pretty sure M2Crypto has an httplib
work-alike).


John


From wildemar at freakmail.de  Tue Sep 12 08:02:11 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Tue, 12 Sep 2006 14:02:11 +0200
Subject: "filtered view" upon lists?
Message-ID: <4506A1C3.906@freakmail.de>

Hi there :)

I don't know how else to call what I'm currently implementing: An object 
that behaves like a list but doesn't store it's own items but rather 
pulls them from a larger list (if they match a certain criterion).
Changes to the filter are instantly reflected in the underlying list.
Clear enough?

Ok, so I figured that this is generic enough to be found in some 
standard module already (I've had this often enough: Painfully 
implementing s/th and then finding it in the libs some weeks later.).

Any pointers?

c.u.
wildemar


From ldo at geek-central.gen.new_zealand  Mon Sep 25 23:39:54 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 15:39:54 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
Message-ID: <efa7cg$pr2$1@lust.ihug.co.nz>

In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M wrote:

> Lawrence is right that the escape method doesn't work the way he expects
> it to.
> 
> Rewriting a library module simply because a developer is surprised is a
> *very* bad idea.

I'm not surprised. Disappointed, yes. Verging on disgust at some comments in
this thread, yes. But "surprised" is what a lot of users of the existing
cgi.escape function are going to be when they discover their code isn't
doing what they thought it was.

> It would break just about every web app out there that 
> uses the escape module...

How will it break them? Give an example.



From jzgoda at o2.usun.pl  Thu Sep  7 16:33:46 2006
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Thu, 07 Sep 2006 22:33:46 +0200
Subject: How to build extensions on Windows?
In-Reply-To: <1157656285.191995.222400@m79g2000cwm.googlegroups.com>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1157656285.191995.222400@m79g2000cwm.googlegroups.com>
Message-ID: <edpvo3$i09$1@atlantis.news.tpi.pl>

Filip Wasilewski napisa?(a):

> There is an easy way to build Python extensions on Windows with MinGW
> and it works fine for me. Just follow these steps:

It was brougt to my attention that mingw-compiled extensions for Python
2.4 use other malloc() that Python 2.4, is it true? Can this have any
impact on stability?

-- 
Jarek Zgoda
http://jpa.berlios.de


From bignose+hates-spam at benfinney.id.au  Wed Sep 27 03:30:18 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Wed, 27 Sep 2006 17:30:18 +1000
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz> <efaknl$867$2@news.albasani.net>
	<efakui$idf$4@lust.ihug.co.nz> <efate6$ilf$1@news.albasani.net>
	<efb1q3$a43$2@lust.ihug.co.nz>
	<mailman.673.1159276007.10491.python-list@python.org>
	<efch5p$2cc$1@lust.ihug.co.nz> <efcq62$fmc$1@sea.gmane.org>
	<mailman.761.1159329442.10491.python-list@python.org>
	<efd7mk$4qt$1@news.albasani.net>
Message-ID: <87ven9lqb9.fsf@benfinney.id.au>

Georg Brandl <g.brandl-nospam at gmx.net> writes:

> Anthony Baxter wrote:
> >> I would really rather this were a discussion than an
> >> argument. You will now no doubt reply telling me I wouldn't.
> > The Complaints department is down the hall...
>
> Though some discussion participants seemingly want to stay for more
> being-hit-on-the-head lessons ;)

No no, hold your head like this, and then go "waaagh". Try it again.

-- 
 \       "It is seldom that liberty of any kind is lost all at once."  |
  `\                                                     -- David Hume |
_o__)                                                                  |
Ben Finney



From deets at nospam.web.de  Tue Sep 19 10:49:50 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 16:49:50 +0200
Subject: why a main() function?
References: <1158608400.599668.210680@e3g2000cwe.googlegroups.com><1158615492.835407.239900@e3g2000cwe.googlegroups.com>
	<4na377F9esroU1@uni-berlin.de>
	<mailman.264.1158666512.10491.python-list@python.org>
Message-ID: <4naeceF9c3hpU2@uni-berlin.de>

Fredrik Lundh wrote:

> "Diez B. Roggisch" wrote:
> 
>>> There is another secondary advantage: the code inside a function runs
>>> faster (something related is true for C programs too). Usually this
>>> isn't important, but for certain programs they can go 20%+ faster.
>>
>> I totally fail to see why that should be the case - for python as well as
>> for C.
>>
>> So - can you explain that a bit more, or provide resources to read up on
>> it?
> 
> Python stores local variables in an indexed array, but globals in a
> dictionary. Looking things up by index is faster than looking them up by
> name.

Interesting. How is the index computed? I would have assumed that locals()
is somehow used, which is a dicht.

I can imagine enumerating left-hand-side names and trying to replace their
occurence with the index, falling back to the name if that is not
possible/the index isn't found. Does that come close?

Diez


From fredrik at pythonware.com  Tue Sep 26 13:13:28 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 19:13:28 +0200
Subject: QuoteSQL
In-Reply-To: <n4dSg.1630$Y24.1014@newsread4.news.pas.earthlink.net>
References: <slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<Xns98498D79318AFduncanbooth@127.0.0.1>	<efapj7$rfd$2@lust.ihug.co.nz>	<Xns984A6E99A1A73duncanbooth@127.0.0.1>	<efb0bk$8e5$1@lust.ihug.co.nz>
	<n4dSg.1630$Y24.1014@newsread4.news.pas.earthlink.net>
Message-ID: <efbn3n$4lu$1@sea.gmane.org>

Dennis Lee Bieber wrote:

> 	So.. In the case of MySQLdb, one can modify the dictionary of quote
> converters... Seems like one could create a "class" for "LIKE" wildcard
> strings, rather than just pass plain strings, and add that "type" to the
> list of quote converters. That way, one's custom quote function CAN work
> through the regular auto-quote method:
> 
> 	cr.execute(SQL, (LikeType(some_string_with_wildcards),) )
> 
> http://mail.python.org/pipermail/python-list/2003-October/189583.html
> 
> 	I believe SQLite has a similar capability -- possibly other DB
> adapters also have a means of attaching converters (in both directions).

using the term "auto-quoting" for bound parameters isn't very portable, 
though.  intelligent database engines don't even attempt to pass such 
data through the SQL parser.

(does MySQL still do that, btw?  or has that always been a PHP issue?)

</F>



From mccredie at gmail.com  Mon Sep 18 13:48:04 2006
From: mccredie at gmail.com (Matimus)
Date: 18 Sep 2006 10:48:04 -0700
Subject: Help
In-Reply-To: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
References: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
Message-ID: <1158601684.727162.172060@k70g2000cwa.googlegroups.com>

I have yet to find a language/community with better online
documentation. I taught myself with the Python tutorial found at
http://docs.python.org/tut/tut.html. I would look there first. If you
are new to programming altogether I think Python may still be a good
choice, but that may not be the _best_ reference.

Rrajal wrote:
> Hi there, I am new in this subject so could you please tell me from
> where I can get help (or good e-book) of python?



From sp1d3rx at gmail.com  Wed Sep 13 16:48:16 2006
From: sp1d3rx at gmail.com (sp1d3rx at gmail.com)
Date: 13 Sep 2006 13:48:16 -0700
Subject: urllib en https
In-Reply-To: <4508649d$0$4521$e4fe514c@news.xs4all.nl>
References: <4508649d$0$4521$e4fe514c@news.xs4all.nl>
Message-ID: <1158180496.568483.255710@e3g2000cwe.googlegroups.com>

please provide a sample program, which has the minimal functionality
necessary to reproduce this error. I've checked and the syntax hasn't
changed. Perhaps it's with the string you are passing as "fullurl".
Anyways, I can't really troubleshoot more than that without some code.

Cecil Westerhof wrote:
> Something went wrong with my last post. So, again:
>
> I have a strange problem. I wrote a script that uses urllib.urlopen to fetch
> a page through https. In Python 2.2.2 this works without a problem. But
> when I use the script in Python 2.4.1 (which is more recent) I get:
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/local/lib/python2.4/urllib.py", line 79, in urlopen
>     return opener.open(url, data)
>   File "/usr/local/lib/python2.4/urllib.py", line 177, in open
>     return self.open_unknown(fullurl, data)
>   File "/usr/local/lib/python2.4/urllib.py", line 189, in open_unknown
>     raise IOError, ('url error', 'unknown url type', type)
> IOError: [Errno url error] unknown url type: 'https'
> 
> What is happening here? And how can I solve this?



From manuel at prolink.de  Fri Sep  1 04:24:01 2006
From: manuel at prolink.de (Manuel Bleichner)
Date: Fri, 01 Sep 2006 10:24:01 +0200
Subject: Classes referencing each other
Message-ID: <op.te6xmbem58416w@merkur.intern.prolink.de>

Hello list,

I have searched for some time now, but no result...
I'm having the following problem:

In a module I have a huge number of classes of the form:

class A(object):
   connected_to = [B, C]
   <other attributes...>

class B(object)
   connected_to = [C]
   <other attributes...>

class C(object)
   connected_to = [A]
   <other attributes...>

As you see, classes A and B reference classes that
are not yet defined when the class is being defined.
It will raise a NameError: 'B'.

I know i could solve this by leaving out the definition
of 'connected_to' in A and attach it to the class later on by
A.connected_to = [B, C]
but I would like to avoid this, because in the module
there are about 50 classes that have to be altered from time
to time and it's just incredibly ugly if I have to look for
the attribute definitions in more than one place.

Also, I would like to avoid eval(), because the references
have to be followed very often and that would cause more
CPU load and make the program code uglier :)

If anyone of you knows a neat way to solve this, I'd be
very grateful.

Greetings,
Manuel


From rshepard at appl-ecosys.com  Sat Sep 16 11:37:17 2006
From: rshepard at appl-ecosys.com (Rich Shepard)
Date: Sat, 16 Sep 2006 08:37:17 -0700 (PDT)
Subject: Looking for a python IDE
In-Reply-To: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <Pine.LNX.4.64.0609160835250.13961@salmo.appl-ecosys.com>

On Fri, 15 Sep 2006, alfaeco at gmail.com wrote:

> I am looking for a good IDE for Python. Commercial or Open Software.
> If possible with visual GUI designer.

   You can also evaluate boa constructor.

   I tried that for a week or so but went back to emacs with the python
language bindings. There are a bunch of alternatives available and only your
opinion will let you choose among them.

Rich

-- 
Richard B. Shepard, Ph.D.               |    The Environmental Permitting
Applied Ecosystem Services, Inc.(TM)    |            Accelerator
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863


From email at christoph-haas.de  Sat Sep 23 17:50:03 2006
From: email at christoph-haas.de (Christoph Haas)
Date: Sat, 23 Sep 2006 23:50:03 +0200
Subject: Global module variables as default parameters
In-Reply-To: <pan.2006.09.22.15.28.14.188832@gmx.net>
References: <mailman.464.1158937836.10491.python-list@python.org>
	<pan.2006.09.22.15.28.14.188832@gmx.net>
Message-ID: <200609232350.03693.email@christoph-haas.de>

Thanks to all who answered.

On Friday 22 September 2006 17:28, Marc 'BlackJack' Rintsch wrote:
> Christoph Haas wrote:
> > TestModule.py
> > ----------------------------------------
> > globalvar = 0
> >
> > def def1():
> >   print globalvar
> >
> > def def2(foo=globalvar):
> >   print foo
> > ----------------------------------------
> >
> > Running the test.py script prints "123" and "0". So accessing the
> > globalvar in def1() works. But if I try to use the global variable as
> > a default parameter in def2() it uses the default "0". What is the
> > difference between these two? Are there contexts of default
> > parameters?
>
> Default parameters are evaluated *once* when the ``def`` is executed. 
> So in `def2` the value of `foo` won't be looked up when calling the
> function as it is already bound to the value 0.

Now that you point me to it it's pretty obvious indeed. I always forget 
that the 'def's are executed at load time, too.

Peter/John: in fact I already used a sentinel like you proposed as 
a "workaround". So there is just one sensible way to do it. Again.

Kindly
 Christoph


From simonwittber at gmail.com  Fri Sep 15 03:10:11 2006
From: simonwittber at gmail.com (Simon Wittber)
Date: 15 Sep 2006 00:10:11 -0700
Subject: Help me use my Dual Core CPU!
References: <1158063943.007271.86000@m73g2000cwd.googlegroups.com>
	<0001HW.C12F31030003B482F0509530@news.individual.de>
Message-ID: <1158304211.402852.15330@h48g2000cwc.googlegroups.com>

Wolfgang Keller wrote:
> > Are there any other concurrency options I've not discovered yet?
>
> PyMPI?
>
> Ironpython?
>

I'm looking at IronPython right now. I'm attempting to get it to run
pybench, but first, I think I have to work out how to enable
tracebacks...

When the dual core notebook finally arrives, I'm going to test out this
code:

http://entitycrisis.blogspot.com/2006/09/if-i-had-concurrent-python-what-would-i.html

(a multithreaded map function) on some nice large pixel buffers, and
compare performance to CPython. I think the results will be very
interesting!

-Sw.



From wescpy at gmail.com  Tue Sep 26 02:32:03 2006
From: wescpy at gmail.com (wesley chun)
Date: Mon, 25 Sep 2006 23:32:03 -0700
Subject: Timeline for Python?
Message-ID: <78b3a9580609252332y2fe99bbel742836ec77a3954d@mail.gmail.com>

> From: Fredrik Lundh <fredrik at pythonware.com>
> Date: Sat, Sep 23 2006 12:03 pm
>
>> i cover through 2.5, but also include stuff that have
>> already been slated for 2.6 and 2.7.
>
> and what would that be?  target versions in the PEP:s are usually just
> wild guesses...


true, and it's obviously a *bad* idea to be wrong.
i don't have easy access to where in the manuscript
i've made such annotations, however, there are some
minor things which i'm reasonably sure will be in 2.6:

- 'as' becomes a keyword
- catching of string exceptions generates a warning (in 2.5, raising
of string exceptions generates a warning)
- the 'with' statement, introduced under __future__ in 2.5, becomes standard
- intra-package imports not using the relative import syntax will
generate a warning

i'm sure all you dev folks will let me know where
i've hung myself.  i can always make an errata
correction on the book's website as with any other
problems that people find.

however, the main point of my reply is really that
i've tried hard to make the book to be as version-
independent as much as possible.  the added bonus
is for those who *are* locked into specific (pre-
sumably older) versions to know about features that
were added to, altered in, or removed from Python
and for which releases those updates were first
introduced to the public.

cheers,
-wesley

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com


From sjdevnull at yahoo.com  Wed Sep  6 03:06:11 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 6 Sep 2006 00:06:11 -0700
Subject: threading support in python
In-Reply-To: <7xzmddojc5.fsf@ruckus.brouhaha.com>
References: <mailman.53.1157506527.5279.python-list@python.org>
	<7xzmddojc5.fsf@ruckus.brouhaha.com>
Message-ID: <1157526371.291426.191730@m79g2000cwm.googlegroups.com>

Paul Rubin wrote:
> Jean-Paul Calderone <exarkun at divmod.com> writes:
> > >which more explicitly shows the semantics actually desired.  Not that
> > >"huge" a benefit as far as I can tell.  Lisp programmers have gotten
> > >along fine without it for 40+ years...
> >
> > Uh yea.  No lisp programmer has ever written a with-* function... ever.
>
> The context was Lisp programmers have gotten along fine without
> counting on the refcounting GC semantics that sjdevnull advocates
> Python stay with.  GC is supposed to make it look like every object
> stays around forever, and any finalizer that causes an explicit
> internal state change in an extant object (like closing a file or
> socket) is not in the GC spirit to begin with.

I disagree, strongly.  If you want "every object stays around forever"
semantics, you can just not free anything.  GC is actually supposed to
free things that are unreachable at least when memory becomes tight,
and nearly every useful garbage collected language allows destructors
that could have effects visible to the rest of the program.  Reference
counting allows more deterministic semantics that can eliminate
repeating scope information multiple times.



From rogue_pedro at yahoo.com  Tue Sep 12 18:23:51 2006
From: rogue_pedro at yahoo.com (Simon Forman)
Date: 12 Sep 2006 15:23:51 -0700
Subject: Random Drawing Simulation -- performance issue
References: <mailman.385.1158088100.5279.python-list@python.org>
Message-ID: <1158099831.116179.65860@e3g2000cwe.googlegroups.com>

Brendon Towle wrote:
> I need to simulate scenarios like the following: "You have a deck of
> 3 orange cards, 5 yellow cards, and 2 blue cards. You draw a card,
> replace it, and repeat N times."
>
> So, I wrote the following code, which works, but it seems quite slow
> to me. Can anyone point out some obvious thing that I'm doing
> inefficiently? Or, is this more or less as good as it gets?
>
> For reference, my typical numbers look like this:
>
>    2 <= len(population) <= 7
>    4 <= len(mapping) <= 50
>    10 <= count <= 1000000
>
> B.
>
> <code>
> #!/usr/bin/env python
>
> import random
>
> def randomDrawing(count, population):
>      """Simulates drawing <count> items from <population>, with
> replacement.
>      population is a list of lists: [[count1, type1], [count2,
> type2], ...]
>
>      Typical examples:
>      >>>randomDrawing(100, [[3, 'orange'], [5, 'yellow'], [2, 'blue']])
>      [[28, 'orange'], [57, 'yellow'], [15, 'blue']]
>
>      >>>randomDrawing(100000, [[3, 'orange'], [5, 'yellow'], [2,
> 'blue']])
>      [[29923, 'orange'], [50208, 'yellow'], [19869, 'blue']]
>
>      """
>      res = [[0, item[1]] for item in population]
>      mapping = []
>      for i in xrange(len(population)):
>          mapping.extend([i]*population[i][0])
>      for i in xrange(count):
>          index = random.choice(mapping)
>          res[index][0] += 1
>      return res
>
> </code>
>
> --
> Brendon Towle, PhD
> Cognitive Scientist
> +1-412-690-2442x127
> Carnegie Learning, Inc.
> The Cognitive Tutor Company ?
> Helping over 375,000 students in 1000 school districts succeed in math.

I got nearly a 2x speed up with this variant:

def randomDrawing3(count, population):
    res = [[0, item[1]] for item in population]
    mapping = []
    for i in xrange(len(population)):
        mapping.extend([i]*population[i][0])

    n = len(mapping)
    for i in xrange(count):
        index = int(n * random.random())
        res[mapping[index]][0] += 1

    return res


Apparently "int(n * random.random())"  is faster than random.choice()
or random.randint()

sforman at garbage:~ $ python -mtimeit -s'import random; n=10' 'int(n *
random.random())'
100000 loops, best of 3: 3.22 usec per loop

sforman at garbage:~ $ python -mtimeit -s'import random; n=10'
'random.randint(1, n)'
100000 loops, best of 3: 13 usec per loop

sforman at garbage:~ $ python -mtimeit -s'import random; n=range(10)'
'random.choice(n)'
100000 loops, best of 3: 6.07 usec per loop

(Note that the first and last examples produce values 0..9 while the
middle one produces 1..10)


I don't know for sure, but I think the random, uh, spread or whatever
will be the same for random() as for choice().  If it's important, you
should verify that.  ;-)

Peace,
~Simon



From http  Mon Sep 11 16:51:32 2006
From: http (Paul Rubin)
Date: 11 Sep 2006 13:51:32 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <7x1wqiktyj.fsf@ruckus.brouhaha.com>

"David Isaac" <aisaac0 at verizon.net> writes:
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.

I usually use anydbm when I want something quick and simple.


From tim at tdw.net  Sun Sep 24 10:55:20 2006
From: tim at tdw.net (Tim Williams)
Date: Sun, 24 Sep 2006 15:55:20 +0100
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <W53187261.118.8844.1@mx-extra>
References: <W53187261.118.8844.1@mx-extra>
Message-ID: <9afea2ac0609240755p83dd29cp3d90800b246021f3@mail.gmail.com>

On 24/09/06, Ingo Linkweiler <ingo.bear_NOSPAM at freenet.de> wrote:
> Has anyone a function/script to verify an e-mail-address?
>
> It should:
> a) check the syntax
> b) verify an existing mailserver or DNS/MX records
>

b) is problematical.

A domain with MX records may not really have a mail server at all.

Under RFC's,  if  no MX records exist the A record returned for the
mail-domain (the bit after the @ ) should be used as the MX record.

So to check b)  you must not rely on DNS records,  you need to
physically connect to the domain's mailserver(s).

HTH :)


From rrs at researchut.com  Fri Sep  1 15:50:20 2006
From: rrs at researchut.com (Ritesh Raj Sarraf)
Date: Sat, 02 Sep 2006 01:20:20 +0530
Subject: Threads and Progress Bar
References: <mailman.10244.1157107721.27775.python-list@python.org>
	<_a_Jg.1459$v%4.1046@newsread1.news.pas.earthlink.net>
Message-ID: <eda2tu$lmp$1@sea.gmane.org>

Dennis Lee Bieber on Friday 01 Sep 2006 23:04 wrote:

> Well... first off -- some minimal code would be of use...
>

I was scared that people might feel that I'm asking for a ready-made
solution. :-)

Here's the code.

The is the progress bar code.
progressbar.py
class progressBar:
    def __init__(self, minValue = 0, maxValue = 10, totalWidth=12):
        self.progBar = "[]"   # This holds the progress bar string
        self.min = minValue
        self.max = maxValue
        self.span = maxValue - minValue
        self.width = totalWidth
        self.amount = 0       # When amount == max, we are 100% done 
        self.updateAmount(0)  # Build progress bar string

    def updateAmount(self, newAmount = 0):
        if newAmount < self.min: newAmount = self.min
        if newAmount > self.max: newAmount = self.max
        self.amount = newAmount

        # Figure out the new percent done, round to an integer
        diffFromMin = float(self.amount - self.min)
        percentDone = (diffFromMin / float(self.span)) * 100.0
        percentDone = round(percentDone)
        percentDone = int(percentDone)

        # Figure out how many hash bars the percentage should be
        allFull = self.width - 2
        numHashes = (percentDone / 100.0) * allFull
        numHashes = int(round(numHashes))

        # build a progress bar with hashes and spaces
        self.progBar = "[" + '#'*numHashes + ' '*(allFull-numHashes) + "]"

        # figure out where to put the percentage, roughly centered
        percentPlace = (len(self.progBar) / 2) - len(str(percentDone)) 
        percentString = str(percentDone) + "%"
        
        # slice the percentage into the bar
        self.progBar = self.progBar[0:percentPlace] + percentString +
self.progBar[percentPlace+len(percentString):] \
        + " " + str(newAmount/1024) + "KB of " + str(self.max/1024) + "KB"

    def __str__(self):
        return str(self.progBar)
        
def myReportHook(count, blockSize, totalSize):
    import sys
    global prog
    prog = ""

    if prog == "":
        prog = progressBar(0,totalSize,50)
    prog.updateAmount(count*blockSize)
    sys.stdout.write (str(prog))
    sys.stdout.write ("\r")
    #print count * (blockSize/1024) , "kb of " , (totalSize/1024) , "kb
downloaded.\n"


Here's the function, download_from_web() which calls the progress bar:
main.py
def download_from_web(sUrl, sFile, sSourceDir, checksum):
    
    try:
        block_size = 4096
        i = 0
        counter = 0
        
        os.chdir(sSourceDir)
        temp = urllib2.urlopen(sUrl)
        headers = temp.info()
        size = int(headers['Content-Length'])
        data = open(sFile,'wb')
        
        log.msg("Downloading %s\n" % (sFile))
        while i < size:
            data.write (temp.read(block_size))
            i += block_size
            counter += 1
            progressbar.myReportHook(counter, block_size, size)
        print "\n"
        data.close()
        temp.close()


And since I later implemented threads, multiple threads call download_from_web()
concurrently, which in effect calls progress bar, thus I get a progress bar
which continuously keeps getting overwritten. :-)

Here's the code where multiple threads execute:

try:
            lRawData = open(uri, 'r').readlines()
        except IOError, (errno, strerror):
            log.err("%s %s\n" % (errno, strerror))
            errfunc(errno, '')
            
        
        #INFO: Mac OS is having issues with Python Threading.
        # Use the conventional model for Mac OS
        if sys.platform == 'darwin':
            log.verbose("Running on Mac OS. Python doesn't have proper support
for Threads on Mac OS X.\n")
            log.verbose("Running in the conventional non-threaded way.\n")
            for each_single_item in lRawData:
                (sUrl, sFile, download_size, checksum) =
stripper(each_single_item)
                
                if download_from_web(sUrl, sFile, sSourceDir, None) != True:
                    #sys.stderr.write("%s not downloaded from %s\n" % (sFile,
sUrl))
                    #sys.stderr.write("%s failed\n\n" % (sFile))
                    variables.errlist.append(sFile)
                    pass
                else:
                    if zip_bool:
                        compress_the_file(zip_type_file, sFile, sSourceDir)
                        os.remove(sFile) # Remove it because we don't need the
file once it is zipped.
        else:
            #INFO: Thread Support
            if variables.options.num_of_threads > 1:
                log.msg("WARNING: Threads is still in alpha stage. It's better
to use just a single thread at the moment.\n")
                log.warn("Threads is still in alpha stage. It's better to use
just a single thread at the moment.\n")
                
            NUMTHREADS = variables.options.num_of_threads
            name = threading.currentThread().getName()
            ziplock = threading.Lock()
            
            def run(request, response, func=download_from_web):
                '''Get items from the request Queue, process them
                with func(), put the results along with the
                Thread's name into the response Queue.
                
                Stop running once an item is None.'''
            
                while 1:
                    item = request.get()
                    if item is None:
                        break
                    (sUrl, sFile, download_size, checksum) = stripper(item)
                    response.put((name, sUrl, sFile, func(sUrl, sFile,
sSourceDir, None)))
                    
                    # This will take care of making sure that if downloaded,
they are zipped
                    (thread_name, Url, File, exit_status) = responseQueue.get()
                    if exit_status == True:
                        if zip_bool:
                            ziplock.acquire()
                            try:
                                compress_the_file(zip_type_file, File,
sSourceDir)
                                os.remove(File) # Remove it because we don't
need the file once it is zipped.
                            finally:
                                ziplock.release()
                    else:
                        variables.errlist.append(File)
                        pass
            
            # Create two Queues for the requests and responses
            requestQueue = Queue.Queue()
            responseQueue = Queue.Queue()
            
            # Pool of NUMTHREADS Threads that run run().
            thread_pool = [
                           threading.Thread(
                                  target=run,
                                  args=(requestQueue, responseQueue)
                                  )
                           for i in range(NUMTHREADS)
                           ]
            
            # Start the threads.
            for t in thread_pool: t.start()
            
            # Queue up the requests.
            for item in lRawData: requestQueue.put(item)
            
            # Shut down the threads after all requests end.
            # (Put one None "sentinel" for each thread.)
            for t in thread_pool: requestQueue.put(None)
            
            # Don't end the program prematurely.
            #
            # (Note that because Queue.get() is blocking by
            # defualt this isn't strictly necessary. But if
            # you were, say, handling responses in another
            # thread, you'd want something like this in your
            # main thread.)
            for t in thread_pool: t.join()

 
> Second... It sounds like you only created one progress bar, and each
> thread is referencing that single bar. I'd suspect you need to create a
> bar for EACH thread you create, and tell the thread which bar to update.

Yes, you're correct. That's what I'm also suspecting. I tried to do some minor
changes but couldn't succeed.
Request you to, if you reply with code, give a little explanation so that I can
understand and learn from it.

Thanks,
Ritesh
-- 
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."
"Stealing logic from one person is plagiarism, stealing from many is research."
"The great are those who achieve the impossible, the petty are those who
cannot - rrs"



From bj_666 at gmx.net  Wed Sep 20 02:43:06 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Wed, 20 Sep 2006 08:43:06 +0200
Subject: byte count unicode string
References: <mailman.313.1158732191.10491.python-list@python.org>
Message-ID: <pan.2006.09.20.06.43.05.808599@gmx.net>

In <mailman.313.1158732191.10491.python-list at python.org>, willie wrote:

> # What's the correct way to get the
> # byte count of a unicode (UTF-8) string?
> # I couldn't find a builtin method
> # and the following is memory inefficient.
> 
> ustr = "example\xC2\x9D".decode('UTF-8')
> 
> num_chars = len(ustr)    # 8
> 
> buf = ustr.encode('UTF-8')
> 
> num_bytes = len(buf)     # 9

That is the correct way.

Ciao,
	Marc 'BlackJack' Rintsch


From jxjohns at lifeway.com  Wed Sep 27 10:50:16 2006
From: jxjohns at lifeway.com (James Johnston)
Date: Wed, 27 Sep 2006 09:50:16 -0500
Subject: Extra Newby question - Trying to create md5 File Listing
Message-ID: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@lifeway.com>


I've never written a Python program before and I'm trying to read a config
file with file path/names (eg. c:\\python24\\*.dll, ... *.exe) to create an
output file of filename + md5 values.  I'm confused.  I'm trying to learn
how to use Wing IDE and step through the Stack Data.  It seems to be
working but on the

[INDENT]for fn in filelist:
  data = file(fn,'rb').read() [/INDENT]

I get a

[INDENT]IOError: (2, 'No such file or directory', 'c')

Traceback (innermost last):

File "c:\Python examples\md5makr_test4.py", line 1, in ?
  #!/usr/bin/python
File "c:\Python examples\md5makr_test4.py", line 20, in ?
  data = file(fn,'rb').read()[/INDENT]

[B]Code:[/B]
#!/usr/bin/python
# Filename: md5makr_test4.py

import sys, os, os.path, glob, md5, ConfigParser

config = ConfigParser.ConfigParser()
config.read('md5makr.ini')

outputfilname = config.get('general', 'outputfile')
f = file(outputfilname,'wt')
fileconfig = config.get('general', 'inputfiles')

fl = file(fileconfig,'r')
fileData = fl.read()

for f1 in glob.glob(fileData):
  filelist = f1

for fn in filelist:
  data = file(fn,'rb').read()
  hexstring = md5.md5(data).hexdigest()
  f.write(fn + '\t' + hexstring + '/n')

f.close()

Any insight or help would be appreciated.




From jjl at pobox.com  Sat Sep 16 15:32:35 2006
From: jjl at pobox.com (John J. Lee)
Date: Sat, 16 Sep 2006 19:32:35 GMT
Subject: urllib en https
References: <4508649d$0$4521$e4fe514c@news.xs4all.nl>
	<4508720c$0$4520$e4fe514c@news.xs4all.nl>
	<2C6Og.1077$UG4.342@newsread2.news.pas.earthlink.net>
Message-ID: <87r6yby5d8.fsf@pobox.com>

Dennis Lee Bieber <wlfraed at ix.netcom.com> writes:

> On Wed, 13 Sep 2006 23:03:08 +0200, Cecil Westerhof <dummy at dummy.nl>
> declaimed the following in comp.lang.python:
> 
> > 
> > I found the problem. The first Python was compiled with ssl support enabled
> > and the second without ssl support enabled.
> 
> 	A vision is forming in the crystal ball... I see... ActiveState...
> 
> 	As I recall, ActiveState doesn't distribute the SSL package that the
> python.org package contains. But... It is possible to copy the SSL
> related files from a python.org package into the ActiveState
> installation.

Does ActiveState do a unix distribution of Python now?

(The OP seemed to have a Unix-like system -- so probably he didn't
install have the right rpm or whatever installed -- a very common
problem with people trying to use SSL on linux distributions.)


John


From larry.bates at websafe.com  Tue Sep 19 15:50:29 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 19 Sep 2006 14:50:29 -0500
Subject: new string method in 2.5 (partition)
In-Reply-To: <atXPg.9$1n3.69@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<atXPg.9$1n3.69@news.tufts.edu>
Message-ID: <45104A05.4090600@websafe.com>

John Salerno wrote:
> Bruno Desthuilliers wrote:
> 
>> Err... is it me being dumb, or is it a perfect use case for str.split ?
> 
> Hmm, I suppose you could get nearly the same functionality as using
> split(':', 1), but with partition you also get the separator returned as
> well.
> 
>> There are IMVHO  much exciting new features in 2.5 (enhanced
>> generators, try/except/finally, ternary operator, with: statement etc...)
> 
> I definitely agree, but I figure everyone knows about those already.
> There are also the startswith() and endswith() string methods that are
> new and seem neat as well.

FYI- .startswith() and .endswith() string methods aren't new in 2.5.
They have been around since at least 2.3.

Larry Bates


From wegein at gmail.com  Fri Sep  1 02:17:47 2006
From: wegein at gmail.com (damacy)
Date: 31 Aug 2006 23:17:47 -0700
Subject: all ip addresses of machines in the local network
In-Reply-To: <mailman.10149.1157007854.27775.python-list@python.org>
References: <1156387621.568779.191420@m73g2000cwd.googlegroups.com>
	<1156393371.550249.138930@75g2000cwc.googlegroups.com>
	<1156394781.155152.313080@i3g2000cwc.googlegroups.com>
	<1360b7230608240328r2c732f86ia8914aaba7a8fb83@mail.gmail.com>
	<mailman.9777.1156418398.27775.python-list@python.org>
	<1156985646.373443.55810@m73g2000cwd.googlegroups.com>
	<mailman.10149.1157007854.27775.python-list@python.org>
Message-ID: <1157091467.656162.6060@i42g2000cwa.googlegroups.com>

Amit Khemka wrote:
> > in my program so far, multiple threads (255 threads in total) spawned
> > at once with each one of them trying to call socket.gethostbyaddr(ip)
> > function. i.e. if exception thrown, no machine found. i used .join() to
> > wait for the threads to terminate. it's fully working however the
> > problem is that it's too slow. it takes approx. 14 seconds to process
> > (i tried using 'ping' but it's even slower.).
> >
> > my question is.. is there a way to improve performance of the program
> > if i know what the port number would be? in my case, the port number
> > will always be constant although i have no clue on what ip addresses
> > would be (that's the reason all of 255 different addresses must be
> > tested).
> >
> > i tried the same function with the port number specified,
> > gethostbyaddr(ip:portno), but it is even 10-second slower than using
> > the same function without a port number specified (i.e. approx. 25
> > seconds to complete).
>
> You can save some (DNS) overheads by escaping the call
> "gethostbyaddr", assuming you are not interested in knowing the
> 'Names' of the machines in your Network. And directly attempt to find
> the machines which are listenting on the specified port. A simple way
> of
> doing this would be to use socket.connect((ip, port)), if the
> connections succeds you have
> your machine !
>
> ( There are various other ways of scanning ports, have a look at:
> http://insecure.org/nmap/nmap_doc.html#connect )
>
> Though I am not sure how 'fast' it would be. Also remember that the
> time in scanning is affected by network-type,
> response-time-of-remote-machine, number-of-machines scanned etc.
>
> I would still be interested, in seeing how nmap(with some smart
> options) compares with the python code. ( In my network "nmap
> -osscan_limit -p 22 -T5 Class_D_Network" completes in 1.5 seconds !)
>
> cheers,
> amit.
> --
> ----
> Amit Khemka -- onyomo.com
> Home Page: www.cse.iitd.ernet.in/~csd00377
> Endless the world's turn, endless the sun's Spinning, Endless the quest;
> I turn again, back to my own beginning, And here, find rest.

hello.

here are my test results;

1. using nmap with the options specified above: approx. 50 seconds or
longer
2. using socket.connect((ip, port)): approx. 26 seconds
3. using socket.gethostbyaddr(ip): approx. 14 seconds

all three above use multiple threads.

and also, i tried using (in and out) queues to detect the threads
termination (instead of .join()), however, it's also very slow and it
needs to have deadlock detection mechanism implemented in it which
would probably lower the performance of the program.

hmm...



From lm401 at cam.ac.uk  Fri Sep 22 03:39:45 2006
From: lm401 at cam.ac.uk (LorcanM)
Date: 22 Sep 2006 00:39:45 -0700
Subject: Can I inherit member variables?
In-Reply-To: <45128a1d$0$27565$626a54ce@news.free.fr>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<mailman.399.1158835004.10491.python-list@python.org>
	<1158837585.252993.116590@e3g2000cwe.googlegroups.com>
	<45128a1d$0$27565$626a54ce@news.free.fr>
Message-ID: <1158910785.264427.272540@d34g2000cwd.googlegroups.com>

Thanks Bruno,

That is a more natural way to do it. The code looks a lot cleaner now.


 Lorcan.



From MonkeeSage at gmail.com  Wed Sep 20 05:09:55 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 20 Sep 2006 02:09:55 -0700
Subject: byte count unicode string
References: <mailman.315.1158736972.10491.python-list@python.org>
	<1158737974.490027.71860@k70g2000cwa.googlegroups.com>
	<1158739949.355384.178660@e3g2000cwe.googlegroups.com>
	<Xns9844612827EEAduncanbooth@127.0.0.1>
	<7xzmcv2ake.fsf@ruckus.brouhaha.com>
Message-ID: <1158743395.548514.106420@b28g2000cwb.googlegroups.com>

OK, so the devil always loses. ;P

Regards,
Jordan



From piet at cs.uu.nl  Wed Sep 27 06:38:58 2006
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Wed, 27 Sep 2006 12:38:58 +0200
Subject: ruby %w equivalent
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
Message-ID: <m2lko5a919.fsf@ordesa.lan>

>>>>> hg <hg at nospam.com> (A) wrote:

>A> Antoine De Groote wrote:
>>> Hi everybody,
>>> 
>>> is there a python equivalent for the ruby %w operator?
>>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>> 
>>> Thanks a lot
>>> Regards,
>>> antoine

>A> Why would they want to make such an obscure API ? ... didn't they have
>A> Python to learn from (I am truly amazed - nothing cynical ...just ...
>A> why ?!!!!)

I think it is modeled after Perl.
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org


From steve at holdenweb.com  Fri Sep 22 15:18:29 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 15:18:29 -0400
Subject: String Pattern Matching: regex and Python regex documentation
In-Reply-To: <45143567.2000903@lazaridis.com>
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
	<45143567.2000903@lazaridis.com>
Message-ID: <ef1csl$pcc$1@sea.gmane.org>

Ilias Lazaridis wrote:
> [followup to c.l.py]
> 
> Xah Lee wrote:
> 
>>the Python regex documentation is available at:
>>http://xahlee.org/perl-python/python_re-write/lib/module-re.html
>>
>>Note that, i've just made the terms of use clear.
>>
>>Also, can anyone answer what is the precise terms of license of the
>>official python documentation? The official python.org doc site is not
>>clear.
> 
> 
> I would be interested in this information, too.
> 
> 
>>Note also, that the regex syntax used by Perl is the same as Python.
>>So, this section
>> http://xahlee.org/perl-python/python_re-write/lib/re-syntax.html
>>which contains clear explanation of regex syntax, will be of interest
>>to Perl programers as well.
> 
> ....
> 
> Your tutorial has helped me to write my first regular expression:
> 
> http://dev.lazaridis.com/base/changeset/60
> 
> your notes about documentation are interesting, too:
> 
> http://xahlee.org/perl-python/re-write_notes.html
> 
> I have some notes, too:
> 
> http://case.lazaridis.com/wiki/Docu
> 
> -
> 
> I would like to read more on your website, but the usability is 
> terrible, mainly due to the missing navigation.
> 
> What about an exchange?
> 
> I assist you with the navigation. you will just need apache 
> server-side-include and one file "navigation.html", which will contail 
> all of the navigation, very simple.
> 
> And you make an real life example for a python regular expression use-case:
> 
> i want to scan a text for this line:
> 
> [[CustomAttributes(this=4,that=34,name='peter')]]
> 
> picking "this=4" ...
> 
> and add the attributes to an object.
> 
> object = addCustomAttributes(text)
> 
> (ok, the regex part would be enouth).
> 
> ..
> 
Ilias Lazardis meets Xah Lee. I just *know* we're in for trouble now ...

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From paddy3118 at netscape.net  Sat Sep 16 04:23:59 2006
From: paddy3118 at netscape.net (Paddy)
Date: 16 Sep 2006 01:23:59 -0700
Subject: Looking for a python IDE
In-Reply-To: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <1158395039.321244.242240@d34g2000cwd.googlegroups.com>


alfaeco at gmail.com wrote:
> Hello
>
> I am looking for a good IDE for Python. Commercial or Open Software.
>
> If possible with visual GUI designer.
>
> For the moment I am considering Komodo.
>
> Any suggestions?
>
> Thanks in advance
Hi, you have asked a very common question. Please search out previous
threads on this topic in comp.lang.python or search www.python.org, or
do a general google around. You should find a LOT of opinion.

- Paddy.



From exarkun at divmod.com  Sun Sep  3 18:02:15 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Sun, 3 Sep 2006 18:02:15 -0400
Subject: sqlite 'ownership' problems
In-Reply-To: <1157319531.590763.37310@m79g2000cwm.googlegroups.com>
Message-ID: <20060903220215.1717.1537024058.divmod.quotient.38237@ohm>

On 3 Sep 2006 14:38:51 -0700, rdrink <rdrink at artic.edu> wrote:
>I will try to keep this as suscinct as possible as it might be an
>obvious Q.....
>I am just getting into Py/sqlite (with a fair amount of PHP/MySQL
>background), and am posting this as much for the other noobs as
>myself....
>I started learning sqlite by tinkered around at the command line:
>creating db's, tables, populating them. etc. All fine.
>Then I moved to Python.. and immediately noticed that for a db I had
>created at the cmnd-line, e.g. 'test.db' with a table 'foo', I would
>get the error "_sqlite.DatabaseError: no such table: foo". My suspition
>was that this is a "feature" of sqlite ('flat file' vs. a dynamic db in
>MySQL) where sqlite is 'sensetive' to who creates it... Which seems to
>be borne out by that fact that I have since written one Py script (in
>IDLE) which creates and populates a db, and another that can retrieve
>the data. But...

Just make sure everyone who should be able to read and write the database
has read and write permissions on the database file.  Nothing more is
necessary.

Jean-Paul


From johnjsal at NOSPAMgmail.com  Wed Sep 27 14:34:05 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 18:34:05 GMT
Subject: ElementTree and proper identation?
In-Reply-To: <JtzSg.37$1n3.434@news.tufts.edu>
References: <iYySg.34$1n3.469@news.tufts.edu> <r4zSg.35$1n3.414@news.tufts.edu>
	<mailman.821.1159380838.10491.python-list@python.org>
	<JtzSg.37$1n3.434@news.tufts.edu>
Message-ID: <xuzSg.38$1n3.434@news.tufts.edu>

John Salerno wrote:
> Fredrik Lundh wrote:
>> John Salerno wrote:
>>
>>> Well, further research reveals that this function isn't available yet 
>>> in any version.
>>
>> what keeps you from using the source code on the page you're talking 
>> about ?
>>
>> </F>
>>
> 
> Yeah, actually I just gave this a try but I couldn't figure out where 
> the code needed to go or how to call the function. I tried creating an 
> Element with a few SubElements, then I did:
> 
> print >> filename, indent(root)
> 
> But that only wrote the value "None" into the file.

Ok, I see that indent() returns None. In that case, how do I get the 
formatted text that it produces?


From sjdevnull at yahoo.com  Wed Sep 13 17:56:19 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 13 Sep 2006 14:56:19 -0700
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
Message-ID: <1158184579.429863.32670@i42g2000cwa.googlegroups.com>

akameswaran at gmail.com wrote:
> I wrote up a quick little set of tests, I was acutally comparing ways
> of doing "case" behavior just to get some performance information.  Now
> two of my test cases had almost identical results which was not at all
> what I expected.  Ultimately I realized I don't really know how
> literals are treated within the interpreter.
>
> The two implementations I was looking at were:
>
> class caseFunction(object):
>     def __init__(self):
>         self.caseDict = {'a':"retval = 'a'",
> 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
>
> "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
>                          "i":"retval='i'"}
>
>     def doIt(self,a):
>         exec(self.caseDict.get(a))
>         return retval

Have you considered eliminating the exec() wart just doing:

    self.caseDict = {'a'='a', 'b'='b'}
....
    def doIt(self, a):
        return self.caseDict[a]

(or the get call)
Or for more complex cases going with something like:

class caseFunction(object):
    def __init__(self):
        self.caseDict = {'a':self.do_a, 'b':self.do_b}
    def do_a(self):
        return 'a'
    def do_b(self):
        return 'b'
    def doIt(self, a):
        return self.caseDict[a]()

or eliminating the init and
    def doIt(self, a):
        return getattr(self, "do_"+a)()

?  Obviously with these two you might want a bit more complexity for a
default if the attribute/dict entry is missing, but the simple case
shows the idea.



From g.brandl-nospam at gmx.net  Sun Sep 24 08:36:29 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 24 Sep 2006 14:36:29 +0200
Subject: Strange __future__ behavior in Python 2.5
In-Reply-To: <1159044689.234403.216460@m7g2000cwm.googlegroups.com>
References: <1159044689.234403.216460@m7g2000cwm.googlegroups.com>
Message-ID: <ef5u4f$7n7$1@news.albasani.net>

mdsteele at gmail.com wrote:
> My understanding of the __future__ statement is that you may say
> something like:
> 
> from __future__ import foo, bar
> 
> to enable more than one feature.  However, this does not seem to be
> working properly in 2.5; it behaves as expected when typed into the
> interactive interpreter, but not when it is in a module.  When I try to
> import the following module:
> 
> from __future__ import with_statement, division, absolute_import
> def bar():
>     print 5/3
>     with open('asdf') as f:
>         for line in f: print line.strip()
> 
> I get a warning that 'with' will soon be a reserved keyword, and a
> SyntaxError on the line with the with statement, so obviously, the
> __future__ statement is not working.  When I change the first line to:
> 
> from __future__ import with_statement
> from __future__ import division,absolute_import
> 
> then the with statement works fine.  However, the true division also
> works fine, so apparently making multiple __future__ imports on one
> line works for division, but not for with_statement.
> 
> Is this a bug, or am I misunderstanding something?  I'm using the final
> release of Python 2.5 (r25:51918, Sep 19 2006, 08:49:13) on Mac OS X.

This is a bug and has now been fixed in the SVN repo.
Thanks for bringing it up.

Georg


From stefan.rank at ofai.at  Wed Sep  6 07:13:26 2006
From: stefan.rank at ofai.at (Stefan Rank)
Date: Wed, 06 Sep 2006 13:13:26 +0200
Subject: Getting Process Name on Win32
In-Reply-To: <3f8d3ac50609060356r3e16137eib19c7eaf0ead829c@mail.gmail.com>
References: <3f8d3ac50609060356r3e16137eib19c7eaf0ead829c@mail.gmail.com>
Message-ID: <44FEAD56.9000009@ofai.at>

[BTW, there is a list/newsgroup specifically for pywin32]

on 06.09.2006 12:56 Rama said the following:
> Hi,
>  
>      I want to list the names of all the processes running on my 
> machine. I am stuck at this point and do not know how to extract the 
> name of a process.
> 
>      Using win32process.EnumProcesses, I am able to obtain the pids of 
> all the processes and using win32api.OpenProcess() I have obtained a 
> handle to the process. However, I could not find an appropriate method 
> to provide me the name of the process. I went through the available 
> documentation on the 
> http://aspn.activestate.com/ASPN/docs/ActivePython/2.4/pywin32/win32.html 
> site - but could not find something to help me.
> 
>      Could some one please guide me on this?

This is not directly what you wanted, but it works for me::

   In [1]: import win32com.client

   In [2]: wmi = win32com.client.GetObject('winmgmts:')

   In [3]: procs = wmi.ExecQuery('Select * from win32_process')

   In [4]: for proc in procs:
      ...:     print proc.Name
      ...:
   System Idle Process
   ... [censored]


There are also python-packages that encapsulate dealing with wmi.

cheers,
stefan



From johnjsal at NOSPAMgmail.com  Wed Sep 27 14:26:49 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 18:26:49 GMT
Subject: sqlite3 error
Message-ID: <JnzSg.36$1n3.471@news.tufts.edu>

Here's my script:

import sqlite3

con = sqlite3.connect('labdb')
cur = con.cursor()
cur.executescript('''
DROP TABLE IF EXISTS Researchers;
CREATE TABLE Researchers (
     researcherID varchar(9) PRIMARY KEY NOT NULL,
     birthYear int(4) DEFAULT NULL,
     birthMonth int(2) DEFAULT NULL,
     birthDay int(2) DEFAULT NULL,
     birthCountry varchar(50) DEFAULT NULL,
     birthState char(2) DEFAULT NULL,
     birthCity varchar(50) DEFAULT NULL,
     nameFirst varchar(50) NOT NULL,
     nameLast varchar(50) NOT NULL,
     nameGiven varchar(255) DEFAULT NULL,
);
''')

And here's the error:

Traceback (most recent call last):
   File "C:\Python25\myscripts\labdb\dbtest.py", line 19, in <module>
     ''')
OperationalError: near ")": syntax error
 >>>

My script looks just like the example in the docs, so I'm not sure what 
I'm doing wrong. The error message seems like it should be easy to 
figure out, but all I did was close the triple quotes and then close the 
parentheses, just like the example.

Hope someone can shed some light on this! :)


From bulliver at gmail.com  Thu Sep 14 17:49:27 2006
From: bulliver at gmail.com (Darren Kirby)
Date: Thu, 14 Sep 2006 14:49:27 -0700
Subject: stock quotes
In-Reply-To: <bF2Og.230637$k%3.67439@dukeread12>
References: <bF2Og.230637$k%3.67439@dukeread12>
Message-ID: <d416abde0609141449v181b738dy8a477f433ef76149@mail.gmail.com>

On 9/13/06, Donlingerfelt <donlingerfelt at cox.net> wrote:
> I would like to download stock quotes from the web, store them, do
> calculations and sort the results.  However I am fairly new and don't have a
> clue how to parse the results of a web page download.   I can get to the
> site, but do not know how to request the certain data  need.  Does anyone
> know how to do this?  I would really appreciate it.  Thanks.

Some have already directed to webscraping tools, but you don't need to
go that route if you can settle for using finance.yahoo.com, as you
can ask for the data in a particular format ie: plain text, csv etc...

I have also written some code that does this. As an added bonus it
also does currency conversion. Maybe the code will help get you
started:
http://badcomputer.org/unix/code/stock.html

HTH
-d
-- 
http://badcomputer.org


From noreply at python.org  Thu Sep  7 10:59:27 2006
From: noreply at python.org (Automatic Email Delivery Software)
Date: Thu, 7 Sep 2006 09:59:27 -0500
Subject: Returned mail: see transcript for details
Message-ID: <20060907145951.CAA6E1E4003@bag.python.org>

This message was undeliverable due to the following reason(s):

Your message could not be delivered because the destination server was
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Most likely there is a network problem that prevented delivery, but
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Your message was not delivered within 6 days:
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From kadeko at gmail.com  Tue Sep  5 03:49:16 2006
From: kadeko at gmail.com (looping)
Date: 5 Sep 2006 00:49:16 -0700
Subject: Add NTLM proxy authentication to urllib2
Message-ID: <1157442556.636114.294400@i3g2000cwc.googlegroups.com>

Hi,
I have to make internet connections through an ISA proxy server that
use NTLM or Kerberos authorization method.
I've found a program in python called ntlmaps that act like a proxy and
could make the NTLM authentication, but you have to run it and make all
your connection through it, not an optimal solution.
So what I really need is an enhanced urllib2 that support NTLM or
Kerberos.
I've found that pywin32 could manage NTLM encryption with the sspi
module but I've no idea how to implement it in urllib2, NTLM
authentication use a 'Token dance' between client and server.

Anyone has an experience, a demo or an idea to share ?

Thanks.



From ironfroggy at gmail.com  Mon Sep 18 03:37:50 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 03:37:50 -0400
Subject: modules in diff. file
In-Reply-To: <1158563960.722719.121140@k70g2000cwa.googlegroups.com>
References: <1158563960.722719.121140@k70g2000cwa.googlegroups.com>
Message-ID: <76fd5acf0609180037k2f14b8a0s4735acdb9eb109b7@mail.gmail.com>

On 18 Sep 2006 00:19:20 -0700, JyotiC <jyoti.chhabra at gmail.com> wrote:
> hi,
>
> i have a prog. and i want diving the code in different files.
> there will be one mail file which will call modules or
> variables(global) from differnet files
> how can i do this.
> code is very big and i it's getting difficult to manage in same file.
>
> thanx in advance

All of this is covered in any good Python tutorial, including the
official documentation. Simply move code you want to seperate into
their own python files. They will become importable modules, so foo.py
can be accessed with `import foo` from another module. Now, be careful
because you can't circularly import the modules. That means that if
you have module foo and module bar, they can't both import each other.
You'll have to take that into consideration when you seperate the code
into these modules. you can usually break up a moderately sized
project such that one main module imports all the others, and none of
them need to know about one another.

Python Tutorial - Modules
http://docs.python.org/tut/node8.html


From stdazi at gmail.com  Fri Sep  1 05:34:48 2006
From: stdazi at gmail.com (stdazi)
Date: 1 Sep 2006 02:34:48 -0700
Subject: python loops
In-Reply-To: <slrnefeft1.9bt.sybrenUSE@schuimige.stuvel.eu>
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>
	<mailman.10211.1157052834.27775.python-list@python.org>
	<slrnefeft1.9bt.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1157103288.783306.106850@p79g2000cwp.googlegroups.com>

`range' is especially useful for iterating over long sequences ;-)

    for i in range(0,100000000000000) :
OverflowError: range() result has too many items



Sybren Stuvel wrote:
> Michael.Coll-Barth at VerizonWireless.com enlightened us with:
> > I thought the xrange was preferred?  for x in xrange(length):
>
> True. It doesn't create the entire list, like range does. range(1000)
> creates a 1000-element list. xrange(1000) just iterates through the
> appropirate values.
>
> > The information contained in this message and any attachment may be
> > proprietary, confidential, and privileged or subject to the work
> > product doctrine and thus protected from disclosure.  If the reader
> > of this message is not the intended recipient, or an employee or
> > agent responsible for delivering this message to the intended
> > recipient, you are hereby notified that any dissemination,
> > distribution or copying of this communication is strictly
> > prohibited.  If you have received this communication in error,
> > please notify me immediately by replying to this message and
> > deleting it and all copies and backups thereof.  Thank you.
>
> And how are we supposed to interpret this? Copying this communication
> may be prohibited, but both email and usenet messages are copied all
> the time. Without that, both systems fail miserably.
>
> Sybren
> --
> The problem with the world is stupidity. Not saying there should be a
> capital punishment for stupidity, but why don't we just take the
> safety labels off of everything and let the problem solve itself?
>                                              Frank Zappa



From metaperl at gmail.com  Tue Sep 12 09:06:13 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 06:06:13 -0700
Subject: How to get the package, file,
	and line of a method/function invocant?
In-Reply-To: <pan.2006.09.12.06.33.14.274710@gmx.net>
References: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>
	<pan.2006.09.12.06.33.14.274710@gmx.net>
Message-ID: <1158066372.984597.237810@p79g2000cwp.googlegroups.com>


Marc 'BlackJack' Rintsch wrote:
> In <1158038477.221439.15260 at e63g2000cwd.googlegroups.com>, metaperl wrote:
>
> > # Of course I could cheat and pass it, but I don't want to:
> >
> > directories = data.storage.logic(__file__)
>
> Why do you consider a plain and simple solution cheating?

Hmm, I dont know the proper software engineering term, but just on the
basis of instinct, it seems wrong for a function to use something that
it can get on its own.

It's kind of like being at a 5-star hotel. It might be very possible
for you to bring your own pop tarts and toast them, but they go to
great lengths to have a continental buffet ready for you without you
doing anything.

Good question, airheaded answer :)



From KareemOfweet840 at hotmail.com  Wed Sep 20 18:10:02 2006
From: KareemOfweet840 at hotmail.com (Kareem840)
Date: 20 Sep 2006 15:10:02 -0700
Subject: Need some help here
Message-ID: <1158790201.887958.84700@k70g2000cwa.googlegroups.com>

Hello. Unfortunately, I am in need of money to pay my credit card
bills. If you could spare just $1, I would be grateful. I have a Paypal
account. Kramer1260 at hotmail.com. I swear this will go to my card
balances. Thank you.



From jessie.garrehy at gmail.com  Tue Sep  5 22:04:51 2006
From: jessie.garrehy at gmail.com (jessie@41414.com)
Date: 5 Sep 2006 19:04:51 -0700
Subject: Searching for python eng for Mobile Gaming: Limbo41414
Message-ID: <1157508291.083954.224340@e3g2000cwe.googlegroups.com>

Hi Group!

Jessie here, Head of People for Limbo Mobile (www.41414.com); mobile
gaming company based in Burlingame, Ca.

We are looking for a python developer full-time to add to our team. Our
perfect dev has a couple of years experience, and is interested in
working within a small team. Our staff is a total of 29.

Recently funded by DFJ, Azure Capital Partners. Launched, product hit
market, we are a fun group.

Please contact me if you are interested in learning more about us, or
the position. 

jessie at 41414.com
www.41414.com



From chris at simplistix.co.uk  Mon Sep 11 19:22:58 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Tue, 12 Sep 2006 00:22:58 +0100
Subject: Problems with email.Generator.Generator - Solved?
In-Reply-To: <4505EB46.30306@simplistix.co.uk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>	<ee4cam$g9a$03$1@news.t-online.com>
	<4505CAA1.9090102@simplistix.co.uk>
	<4505D782.3010105@simplistix.co.uk>
	<4505EB46.30306@simplistix.co.uk>
Message-ID: <4505EFD2.1040001@simplistix.co.uk>

Chris Withers wrote:
> Has no-one ever successfully generated a correctly formatted email with 
> email.MIMEText where the message includes non-ascii characters?!

I'm guessing not ;-)

Well, I think I have a winner, but it required me to subclass MIMEText:

from email.Charset import Charset,QP
from email.MIMEText import MIMEText as OriginalMIMEText
from email.MIMENonMultipart import MIMENonMultipart

class MIMEText(OriginalMIMEText):

     def __init__(self, _text, _subtype='plain', _charset='us-ascii'):
         if isinstance(_charset,Charset):
             cs = _charset.input_charset
         else:
             cs = _charset
         if isinstance(_text,unicode):
             _text = _text.encode(charset.input_charset)
         MIMENonMultipart.__init__(self, 'text', _subtype,
                                   **{'charset': cs})
         self.set_payload(_text, _charset)

charset = Charset('utf-8')
charset.body_encoding = QP
txt = u'Some text with chars that need encoding:\xa3'
msg = MIMEText(txt,'plain',charset)
print msg.as_string()

Which gives:

Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

Some text with chars that need encoding:=C2=A3

It also works with non-QP charsets.

The reason the subclass is needed is because the 
MIMNonMultipart.__init__ cannot handle a charset which isn't a simple 
string. Since it's needed for that reason, it seems like the right place 
to encode any incoming unicode.

So, by my count, there are two bugs:

1. email.MIMEText.MIMEText can't take a real Charset object to its
    __init__ method.

2. email.Message.Message.set_payload has no clue about unicode.

Does that sounds fair? If so, should I open SF issues for them?

cheers,

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From deets at nospam.web.de  Mon Sep 18 05:23:16 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 18 Sep 2006 11:23:16 +0200
Subject: incompatible exit values between python 2.4 and 2.5
References: <1158567676.994720.103690@e3g2000cwe.googlegroups.com>
Message-ID: <4n76s5F90g5kU1@uni-berlin.de>

> 1) is this change of behaviour documented somewhere and did I miss
> that, or has this not been documented (yet)
> 2) Is there a build-in way to set the exit value for Python in case an
> exception is raised that is uncaught and causes python to terminate? (I
> have now implemented something using
>    try:
>       ...
>    except ImportError, comment:
>       sys.exit(2)
>    except:
>       sys.exit(1)
> but I still have to figure out how to print the stacktrace before
> exiting with specific values.)

For the latter, take a look at

sys.exc_info()


Diez


From R.Brodie at rl.ac.uk  Tue Sep  5 11:32:26 2006
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Tue, 5 Sep 2006 16:32:26 +0100
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org><1157381880.697001.260070@m73g2000cwd.googlegroups.com><1157387626.242107.92070@p79g2000cwp.googlegroups.com><1157398593.191972.240270@p79g2000cwp.googlegroups.com><1157422764.573537.116340@m79g2000cwm.googlegroups.com><mailman.7.1157438963.5279.python-list@python.org><7xejuqhh94.fsf@ruckus.brouhaha.com>
	<mailman.20.1157468962.5279.python-list@python.org>
Message-ID: <edk5ab$eoc$1@south.jnrs.ja.net>


"km" <srikrishnamohan at gmail.com> wrote in message 
news:mailman.20.1157468962.5279.python-list at python.org...

> I know many of my friends who did not choose python for obvious reasons
> of the nature of thread execution in the presence of GIL which means
> that one is  wasting sophisticated hardware resources.

It would probably be easier to find smarter friends than to remove the
GIL from Python. 




From duncan.booth at invalid.invalid  Tue Sep 12 13:31:12 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 12 Sep 2006 17:31:12 GMT
Subject: best way of testing a program exists before using it?
References: <mailman.362.1158074341.5279.python-list@python.org>
Message-ID: <Xns983CBC6CB40B9duncanbooth@127.0.0.1>

"Tim Golden" <tim.golden at viacom-outdoor.co.uk> wrote:

> All that said, I think the only thing would be to add a line to
> the docs saying sthg like: This will always return False for X_OK under
> Win32. I'm happy to submit the patch, but is it worth it?

+1 on documenting the actual behaviour under windows. -1 on saying it 
always returns False since it doesn't. It seems to return True if the file 
exists including things like 'C:' or 'aux:'.

Bizarrely it seems that it even returns True for files in a folder for 
which the user has no access. This isn't entirely surprising 
('os.access(filename, os.R_OK)' returns True for unreadable files on 
windows), but it does seem odd as it provides a way of verifying the 
existence of files when you can't list the directory.


From usenet at nicko.org  Mon Sep  4 06:37:16 2006
From: usenet at nicko.org (Nicko)
Date: 4 Sep 2006 03:37:16 -0700
Subject: python loops
In-Reply-To: <mailman.10308.1157284512.27775.python-list@python.org>
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>
	<20060831193353.02FD61E4002@bag.python.org>
	<mailman.10240.1157105262.27775.python-list@python.org>
	<1157187866.833841.295930@m79g2000cwm.googlegroups.com>
	<mailman.10298.1157273110.27775.python-list@python.org>
	<1157276620.968479.196110@h48g2000cwc.googlegroups.com>
	<mailman.10308.1157284512.27775.python-list@python.org>
Message-ID: <1157366236.363772.287310@i42g2000cwa.googlegroups.com>

Steve Holden wrote:
> Nicko wrote:
> > Fredrik Lundh wrote:
> >>if you cannot refrain from pulling arguments out of your ass, you not
> >>really the right person to talk about hygiene.
> >
> > I'm impressed but your mature argument. Clearly, in the face of such
> > compelling reasoning, I shall have to concede that we should all
> > generate our range lists up front.
> >
> I'm impressed that you think any of this will be news to the effbot,
> whose sagacity is exceeded only by his irritability in the face of
> ignorance.

Well, I may not have written as much "award winning" Python software as
Fredrik, but sagacity usually implies wisdom and good judgement rather
than mere knowledge.  Still I'm hard pressed to see why suggesting
that, when I want to iterate a number of times, I should use an
iterator that goes around a number of times (and appreciate the bounded
storage requirements that result) rather than writing down the list of
numbers and then selecting each in turn, should warrant such an
outburst.

One wonders if the authors of PEP 3100, the outline plans Python 3.0,
are all premature optimisation freaks too. After all it states that
sooner or later the built in range function will return an iterator and
those of us who prefer to iterate rather than count on our
fingers/lists will have yet another optimisation; we'll not need to put
an "x" in front of our ranges.

Nicko



From edreamleo at charter.net  Sun Sep  3 12:43:20 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Sun, 3 Sep 2006 11:43:20 -0500
Subject: regex matching rst code block?
References: <plCKg.1977$uv4.1386@newsfe02.lga>
	<edeunf$lai$02$1@news.t-online.com>
Message-ID: <%CDKg.1230$Ez.602@newsfe06.lga>

>  r"(::\s*\n(\s*\n)*((\s+).*?\n)(((\4).*?\n)|(\s*\n))*)"

Thanks for this.  I'll try it out.

Edward
--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
-------------------------------------------------------------------- 




From fakeaddress at nowhere.org  Fri Sep  8 20:30:21 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Sat, 09 Sep 2006 00:30:21 GMT
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157705273.423649.132210@i42g2000cwa.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<1157705273.423649.132210@i42g2000cwa.googlegroups.com>
Message-ID: <xWnMg.9702$yO7.1766@newssvr14.news.prodigy.com>

Ben Sizer wrote:
> It's not a crackpot theory. It's a completely reasonable theory. SQL is
> based on relational algebra, which provides a mathematical set of
> operators for grouping data that is stored in separate sets. That data
> is selected and projected according to its value, and nothing else. The
> concept of it having a 'type' has been overlaid on top of this,
> presumably to facilitate efficient implementation, which tends to
> require fixed-width rows (and hence columns). It's not necessary in any
> sense, and it's reasonable to argue that if it was trivial to implement
> variable width columns as efficiently as fixed width columns, that
> explicit data types might never have needed to exist.

The mathematical definition of the relational model includes
that data values are drawn from specific sets. Implementing
variable width columns has nothing to do with it. Here's the
reference:

    1.3. A Relational View of Data

    The term relation is used here in its accepted mathematical
    sense. Given sets S1, S2, ???, Sn, (not necessarily
    distinct), R is a relation on these n sets if it is a set
    of n-tuples each of which has its first element from S1,
    its second element from S2, and so on [1]. We shall refer to
    Sj as the jth domain of R.

    [Footnote 1:] More concisely, R is a subset of the Cartesian
    product S1* S2 * ... * Sn.

    -- E. F. Codd. "A Relational Model of Data for Large Shared
    Data Banks." /Communications of the ACM/, Vol. 13, No. 6,
    June 1970, pp. 377-387.


-- 
--Bryan


From jon+usenet at unequivocal.co.uk  Mon Sep 25 19:41:48 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 23:41:48 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<4517eecf$0$14036$edfadb0f@dread15.news.tele.dk>
	<slrnehfsgj.6tm.jon+usenet@snowy.squish.net>
	<ef95kk$oan$1@news.albasani.net>
Message-ID: <slrnehgq9i.loa.jon+usenet@snowy.squish.net>

In article <ef95kk$oan$1 at news.albasani.net>, Georg Brandl wrote:
>> Here's a point for you - the documentation for cgi.escape says that
>> the characters "&", "<" and ">" are converted, but not what they are
>> converted to.
> 
> It says "to HTML-safe sequences". That's reasonably clear without the need
> to reproduce the exact replacements for each character.
> 
> If anyone doesn't know what is meant by this, he shouldn't really write apps
> using the cgi module before doing a basic HTML course.

So would you like to expliain the difference between &#34; and &quot; ,
or do you need to go on a "basic HTML course" first?


From duncan.booth at invalid.invalid  Mon Sep 25 05:51:17 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 09:51:17 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<ef884j$82r$1@lust.ihug.co.nz>
Message-ID: <Xns98496E6B5C337duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

>> This could be an argument for having a utility function to escape the
>> wildcards for this sort of situation, but certainly not an argument for
>> his proposed QuoteSQL.
> 
> Why not? That is exactly one of the options my QuoteSQL offers.
> 
Yes, but your code also quotes non-wildcards, and that is precisely the 
behaviour you don't want here as you should be using a parameterised 
queries.


From steve at holdenweb.com  Tue Sep  5 02:49:44 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 05 Sep 2006 07:49:44 +0100
Subject: threading support in python
In-Reply-To: <1157422764.573537.116340@m79g2000cwm.googlegroups.com>
References: <mailman.10336.1157379308.27775.python-list@python.org>	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
Message-ID: <edj6l2$6n6$1@sea.gmane.org>

Sandra-24 wrote:
[Sandra understands shared memory]
> 
> I would find an easier time, I think, porting mod_python to .net and
> leaving that GIL behind forever. Thankfully, I'm not considering such
> drastic measures - yet.
> 
Quite right too. You haven't even sacrificed a chicken yet ...

> Why on earth would I want to do all of that work? Just because you want
> to keep this evil thing called a GIL? My suggestion is in python 3
> ditch the ref counting, use a real garbage collector, and make that GIL
> walk the plank. I have my doubts that it would happen, but that's fine,
> the future of python is in things like IronPython and PyPy. CPython's
> days are numbered. If there was a mod_dotnet I wouldn't be using
> CPython anymore.
> 
You write as though the GIL was invented to get in the programmer's way, 
which is quite wrong. It's there to avoid deep problems with thread 
interaction. Languages that haven't bitten that bullet can bite you in 
quite nasty ways when you write threaded applications.

Contrary to your apparent opinion, the GIL has nothing to do with 
reference-counting.
> 
>>Now, the GIL is independent of this; if you really need threading in
>>your situation (you share almost everything and have hugely complex
>>data structures that are difficult to maintain in shm) then you're
>>still going to run into GIL serialization.  If you're doing a lot of
>>work in native code extensions this may not actually be a big
>>performance hit, if not it can be pretty bad.
> 
> 
> Actually, I'm not sure I understand you correctly. You're saying that
> in an environment like apache (with 250 threads or so) and my hugely
> complex shared data structures, that the GIL is going to cause a huge
> performance hit? So even if I do manage to find my way around in the
> Linux world, and I upgrade my memory, I'm still going to be paying for
> that darned GIL?
> 
I think the suggestion was rather that abandoning Python because of the 
GIL might be premature optimisation. But since you appear to be sticking 
with it, that might have been unnecessary advice.

> Will the madness never end?

This reveals an opinion of the development team that's altogether too 
low. I believe the GIL was introduced for good reasons.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From mihamina.rakotomandimby at etu.univ-orleans.fr  Sat Sep 16 17:30:50 2006
From: mihamina.rakotomandimby at etu.univ-orleans.fr (Rakotomandimby (R12y))
Date: Sat, 16 Sep 2006 23:30:50 +0200
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
	<1158435056.459366.284230@i42g2000cwa.googlegroups.com>
Message-ID: <pan.2006.09.16.21.30.50.210987@etu.univ-orleans.fr>

On Sat, 16 Sep 2006 12:30:56 -0700, Robert Hicks wrote:

> That said...the Python docs are open source. Just start going through
> them and adding examples.

ASPN (activestate) is a good place for examples...


From fredrik at pythonware.com  Tue Sep 12 13:33:19 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 19:33:19 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158081840.659296.286340@b28g2000cwb.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<pan.2006.09.05.05.58.03.689280@gmx.net>	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>	<mailman.32.1157478476.5279.python-list@python.org>	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>	<mailman.316.1158040286.5279.python-list@python.org>	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
Message-ID: <ee6r0v$mj9$1@sea.gmane.org>

mensanator at aol.com wrote:

> So, knowing that, would you agree that
> 
> <quote Python Library Reference 13.13>
> If switching to a larger database such as PostgreSQL or Oracle
> is later necessary, the switch should be relatively easy.
> </quote>
> 
> is misleading if not outright untruthful?

eh?  if you've never migrated *from* SQLite to some other database, how 
can *you* possibly know *anything* about how hard or easy it is?

</F>



From dbraden at invalid.add  Wed Sep 13 22:44:12 2006
From: dbraden at invalid.add (David J. Braden)
Date: Thu, 14 Sep 2006 02:44:12 GMT
Subject: Linear regression in 3 dimensions
In-Reply-To: <edsfjg$3q4$1$8302bc10@news.demon.co.uk>
References: <2758.84.43.68.228.1157180804.squirrel@www.wirelessmeasurement.com>
	<mailman.10279.1157182064.27775.python-list@python.org>
	<1157401922.417285.76870@m79g2000cwm.googlegroups.com>
	<edsfjg$3q4$1$8302bc10@news.demon.co.uk>
Message-ID: <0m3Og.928$TV3.475@newssvr21.news.prodigy.com>

Andrew McLean wrote:
> Bernhard,
> 
> Levenberg-Marquardt is a good solution when you want to solve a general 
> non-linear least-squares problem. As Robert said, the OPs problem is 
> linear and Robert's solution exploits that. Using LM here is unnecessary 
> and I suspect a fair bit less efficient (i.e. slower).
> 
> - Andrew
> 
> 
> bernhard.voigt at gmail.com wrote:
>> Hi Robert,
>>
>> I'm using the scipy package for such problems. In the submodule
>> scipy.optimize there is an implmentation of a least-square fitting
>> algorithm (Levenberg-Marquardt) called leastsq.
>>
>> You have to define a function that computes the residuals between your
>> model and the data points:
>>
>> import scipy.optimize
>>
>> def model(parameter, x, y):
>>     a, b, c = parameter
>>     return a*x + b*y + c
>>
>> def residual(parameter, data, x, y):
>>     res = []
>>     for _x in x:
>>         for _y in y:
>>             res.append(data-model(parameter,x,y)
>>     return res
>>
>> params0 = [1., 1.,1.]
>> result = scipy.optimize.leastsq(resdiual, params0, (data,x,y))
>> fittedParams = result[0]
>>
>> If you haven't used numeric, numpy or scipy before, you should take a
>> look at an introduction. It uses some nice extended array objects,
>> where you can use some neat index tricks and compute values of array
>> items without looping through it.
>>
>> Cheers! Bernhard
>>

<<snip>>

Hi Bernhard,
I am just starting to learn Python; could you plz tell me specifically 
the introduction(s) you have in mind?

TIA,
DaveB


From aleax at mac.com  Tue Sep 12 23:12:48 2006
From: aleax at mac.com (Alex Martelli)
Date: Tue, 12 Sep 2006 20:12:48 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<4mnvrhF72ppeU1@uni-berlin.de>
	<1158104377.822787.185730@b28g2000cwb.googlegroups.com>
Message-ID: <1hlkidf.fm1voc1b64uy5N%aleax@mac.com>

metaperl <metaperl at gmail.com> wrote:

> Diez B. Roggisch wrote:
> > metaperl schrieb:
> > >   -->  python -i
> > >>>> class = "algebra"
> > >   File "<stdin>", line 1
> > >     class = "algebra"
> > >           ^
> > > SyntaxError: invalid syntax
> > >
> > >
> > > Why isn' t the parser smart enough to see that class followed by an
> 
> >  the few reserved words won't matter usually.
> 
> woe be unto the ORMs who try to map database columns to Python
> attributes.

I'm gonna skip my usual anti-ORM rant, because there ARE valid case for
"mapping external names to Python identifiers" -- e.g., remote protocols
such as XML-RPC, automatic constructers of FF interfaces, etc.  Such
code generators -- targeting ANY language currently alive -- obviously
have to possess some minimal knowledge of the target language's syntax,
and the obvious solution is to systematically transform identifiers
which would otherwise be keywords.  The one most popular convention is
to append an underscore -- so that 'pass' becomes 'pass_', and so on.


Alex
 


From jaysherby at gmail.com  Fri Sep  1 00:34:13 2006
From: jaysherby at gmail.com (Putty)
Date: 31 Aug 2006 21:34:13 -0700
Subject: raw audio in windows
Message-ID: <1157085253.033831.53950@i3g2000cwc.googlegroups.com>

Hi.  I've written a small python script that was primarily meant for
use in a unix-compatible environment.  It writes a bunch of raw audio
to a file and then sends the file to /dev/audio and the system plays
the audio.  Very simple.

Is there a simple way I could edit the script (which just uses the
system call to do this) to run under windows?

This is the code that would have to change:
os.system("cat audioBuf > /dev/audio")



From steven.bethard at gmail.com  Fri Sep  1 11:58:23 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 01 Sep 2006 09:58:23 -0600
Subject: a new object definition
In-Reply-To: <ed8rce$ikn$1@trompette.imag.fr>
References: <ed8rce$ikn$1@trompette.imag.fr>
Message-ID: <8OOdnRGqXrgDxWXZnZ2dnUVZ_vOdnZ2d@comcast.com>

Sylvain Ferriol wrote:
> hello everybody,
> 
> i want to talk with you about a question i have in mind and i do not
> find a answer. it 's simple:
> why do we not have a beatiful syntax for object definition as we have
> for class definition ?
> 
> we can define a class in python in 2 ways:
>  1. by using the metaclass constructor
>    my_class = MyMetaClass(....)
>  2. by using the classic definition syntax:
>    class my_class(object):
>       __metaclass__ = MyMetaClass
> 
> if i want to instanciate an object, i only have one way to define it:
>  my_obj = my_class(....)
> 
> why not a better syntax like class syntax ?
> 
> example:
>>> instance my_obj:
>>>   __class__ = my_class

Michele Simionato already pointed you to `PEP 359`_.  One of the reasons 
that I withdrew it was that people seemed to feel that you could get 
most of what you want now by defining appropriate metaclasses.  In your 
case, for example, the appropriate metaclass and its usage might look like::

     >>> def instance(name, bases, dict):
     ...     cls = dict.pop('__class__')
     ...     dict.pop('__metaclass__')
     ...     dict.pop('__module__') # silently added by class statement
     ...     return cls(**dict)
     ...
     >>> class C(object):
     ...     def __init__(self, a, b):
     ...         self.a = a
     ...         self.b = b
     ...
     >>> class c:
     ...     __metaclass__ = instance
     ...     __class__ = C
     ...     a = 'foo'
     ...     b = 'bar'
     ...
     >>> c.a, c.b
     ('foo', 'bar')

Sure, it's misleading to use a class statement when you're not actually 
creating a class, but I guess people felt that wanting to do this was 
uncommon enough that they weren't worried about it.

.. _PEP 359: http://www.python.org/dev/peps/pep-0359/

STeVe


From jdemoor at gmail.com  Fri Sep  1 07:21:41 2006
From: jdemoor at gmail.com (jdemoor at gmail.com)
Date: 1 Sep 2006 04:21:41 -0700
Subject: Question about import and namespace
Message-ID: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>

Hi,

I'm new to Python and have the following problem :
I have an application started by a main.py file, which does a ' from
module_1 import * '.
main.py is responsible from the creation of an object which is then
used in module_1.
What is the best way to make that object visible in the module_1
namespace ?
I guess that if I do an ' import module_1 ', I can make the object
visible with ' module_1.myObject = myObject ', but that won't work with
the from ... import * statement.

Thanks in advance for your help.



From torerik81 at gmail.com  Fri Sep  8 12:56:16 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Fri, 08 Sep 2006 18:56:16 +0200
Subject: Get CPU usage of a single process in Windows
Message-ID: <eds7bh$2h8o$1@news.uit.no>

Hi,

This should be possible as Taskmanager tracks CPU usage for every 
process... Anyone know how this can be done?

regards


From ldo at geek-central.gen.new_zealand  Wed Sep 27 07:38:48 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 23:38:48 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
	<Xns984B793317A15duncanbooth@127.0.0.1>
Message-ID: <efdnqd$adv$1@lust.ihug.co.nz>

In message <Xns984B793317A15duncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> 
>>> You are still missing the point. I'm not talking about generating a
>>> MySQL string literal, I'm talking about preventing wildcards
>>> characters having their special meaning when using the string as a
>>> parameter in cursor.execute.
>> 
>> But that's what cursor.execute will do if you use its
>> parameter-substitution mechanism--generate a string literal.
> 
> The current implementation of the MySQL database adapter will do that.
> Other database adaptors may handle parameters without generating string
> literals.

Doesn't matter what other implementations of parametrization might or might
not do. The syntax I generate is valid for MySQL, therefore it will work
with the MySQL database adapter regardless of what else the adaptor might
do.

>>> You still have to escape the escape character...
>> 
>> Which will be done by cursor.execute if you use its
>> parameter-substitution mechanism.
> 
> Too late and not enough. Too late, because if you want to search for the
> literal "\\%" (single backslash percent) you need to escape the backslash
> before you escape the percent. Not enough because at the point MySQLdb
> finally converts it to a string literal a literal backslash to be used in
> a context where wildcards are allowed needs to be spelled with 4
> backslashes. i.e. it needs to be escaped twice, once for the string
> literal and once to stop it being interpreted as an escape within the
> wildcard string.

I'm assuming you mean, how would you get from a Python expression to a MySQL
clause that looks like

    name like "%\\\\%%"

(wildcard % followed by literal backslash \\ followed by literal percent \%
followed by wildcard %.) That's easy:

    EscapeSQLWild(r"\%") => r"\\%"
    SQLString(r"\\%") => r'"\\\\%"'

So the Python expression

    "name like %s" % SQLString("%" + EscapeSQLWild(r"\%") + "%")

gives you what you want.

> Correct: they both do the same thing. So you have to use either SQLString
> or the parameter substitution. You cannot use both. Calling SQLString on a
> string to be passed in to the parameter substitution mechanism will not
> work correctly.

I thought I had made that clear already.



From steve at holdenweb.com  Mon Sep 11 20:46:15 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 12 Sep 2006 01:46:15 +0100
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <df2316bd0609111710t41281120ve6363561f9d92f67@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>
	<df2316bd0609111710t41281120ve6363561f9d92f67@mail.gmail.com>
Message-ID: <ee4vve$rrj$1@sea.gmane.org>

Mike Owens wrote:
> On 9/11/06, Steve Holden <steve at holdenweb.com> wrote:
> 
> 
>>Sure. But if you go back to the start of the thread you'll remember the
>>OP was originally complaining that SQLite was being promoted in the
>>Python docs as SQL compliant.
> 
> 
> Define "SQL compliant." That's about as technically precise as saying
> that something tastes like chicken.
> 
> Furthermore, I'm not responding to Python's representation of one
> thing or another. I am responding to some of the ridiculous and unfair
> criticisms directed at SQLite. Whatever Python did or didn't do, or
> whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
> drug through the mud.
> 
Which is precisely why I took pains to acknowledge that there were many 
purposes for which SQLite is entirely suitable.
> 
>>You shouldn't need to
>>add check constraints to verify that the value stored in an integer
>>column is actually an integer.
> 
> 
> You should if your using SQLite, and this is clearly documented:
> http://www.sqlite.org/datatype3.html.
> 
Right. In which case, why bother to define the types of the columns in 
your table declarations?
> 
>>I don't think anyone is trying to suggest that SQLite isn't a prefectly
>>good tool for many purposes: it's far more sophisticated than bsddb, for
>>example, and I've used both it and Gadfly (which has similar
>>deficiencies when compared to strict standards) with complete satisfaction.
> 
> 
> Then what does calling it crappy and goofy suggest?

That colloquial English expression is acceptable on this list.

Strict affinity mode seems to represent a movement towards more rigorous 
type checking. So the designers of SQLIte accept that it wasn't perfect. 
So what? Please, don't take on so. It's only ones and zeroes.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sturlamolden at yahoo.no  Thu Sep 28 05:49:50 2006
From: sturlamolden at yahoo.no (sturlamolden)
Date: 28 Sep 2006 02:49:50 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <451b2c0b@news.bezeqint.net>
References: <451b2c0b@news.bezeqint.net>
Message-ID: <1159436990.636089.288590@k70g2000cwa.googlegroups.com>

efrat wrote:

> 1. What exactly is a Python list? If one writes a[n], then is the
> complexity Theta(n)? If this is O(1), then why was the name "list"
> chosen? If this is indeed Theta(n), then what alternative should be
> used? (array does not seem suited for teaching purposes.)

A Python list is an array of object references that has some empty
slots (or one empty slot?) for growing quickly to the right.

If you want to make a chained structure, then perhaps you know LISP?
This is what the basic machinery of LISP looks like in Python:

def cons(a,b)
   return [a,b]

def car(structure)
   return structure[0]

def cdr(structure)
   return structure[1]

Python lists are more powerful than you would think! You don't need
classes or OOP to create linked lists or tree structures in Python.

Remember that O(1) is not neccesarily faster than O(N)! Unless your
linked list is very big, you will get something called a 'cache miss'
inside your CPU. Thus it is usually more efficient to work with dynamic
arrays. Further, you can create hybrid array-list structures (e.g.
Java's ArrayList) that outperform lists and arrays with respect to
adding new elements. But they will have to be tuned to your particular
hardware architecture. Growing a linked list node by node is an
excercise for fools (and DSA students?) It may look good in DSA
textbooks, but it is extremely inefficient on real world computers.

Python's lists are implemented as dynamic arrays internally to be
efficient on the kind of data we normally work with. Not only do small
dynamic arrays grow faster than small lists, they also index much
faster. Why are they called "lists" then? Because Guido want you to
look at them conceptually as lists. That is what they are.

If you want real 'fixed size' arrays like Fortran and Matlab, then you
should add 'NumPy' to your Python (http://www.scipy.org). Your science
and engineering students will find NumPy, SciPy and Matplotlib
(http://matplotlib.sourceforge.net) valuable, so direct them to those
sources.



From danielmarkhot at gmail.com  Fri Sep 22 01:28:18 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 21 Sep 2006 22:28:18 -0700
Subject: How does IPython modify the sys.path?
Message-ID: <1158902898.441498.122490@i42g2000cwa.googlegroups.com>

Hello all:

I installed IPython on my XP machine today and find that my sys.path
has been changed
as follows:

>> import sys
>> print  sys.path

['',
 'C:\\Program Files\\Python24\\scripts',
 'C:\\WINDOWS\\system32\\python24.zip',
 'C:\\Documents and Settings\\Daniel\\Desktop',
 'C:\\Program Files\\Python24\\DLLs',
 'C:\\Program Files\\Python24\\lib',
 'C:\\Program Files\\Python24\\lib\\plat-win',
 'C:\\Program Files\\Python24\\lib\\lib-tk',
 'C:\\Program Files\\Python24',
 'C:\\Program Files\\Python24\\lib\\site-packages',
 'C:\\Program Files\\Python24\\lib\\site-packages\\PIL',
 'C:\\Program Files\\Python24\\lib\\site-packages\\win32',
 'C:\\Program Files\\Python24\\lib\\site-packages\\win32\\lib',
 'C:\\Program Files\\Python24\\lib\\site-packages\\Pythonwin',
 'C:\\Program Files\\Python24\\lib\\site-packages\\wx-2.6-msw-ansi',
 'C:\\Program Files\\Python24\\lib\\site-packages\\reportlab_2_0',
 'C:\\Program Files\\Python24\\lib\\site-packages\\IPython/Extensions',
 'C:\\Documents and Settings\\Daniel\\_ipython']


Obviously, IPython changed my sys.path and added an entry in the end as
"C:\\Documents and Settings\\Daniel\\_ipython'"


However, I cannot figure out how IPython can change my sys.path.

I refer to all the following sources
1> http://www.python.org/doc/current/inst/search-path.html  Installing
Python Modules
2> KEY_LOCAL_MACHINE\Software\Python\PythonCore\2.4\PythonPath
3> My machine has no environment variable  "PYTHONPATH"
4> There is no *.pth file under
C:\Program Files\Python24\Lib\site-packages
that contains that information (i.e. C:\\Documents and
Settings\\Daniel\\_ipython)


So how dos IPython modify my sys.path without trace???



Thank you very much!
-Daniel



From fakeaddress at nowhere.org  Wed Sep 13 00:26:01 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 13 Sep 2006 04:26:01 GMT
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
Message-ID: <tLLNg.1257$IA.1007@newssvr11.news.prodigy.com>

Licheng Fang wrote:
> Basically, the problem is this:
> 
>>>> p = re.compile("do|dolittle")
>>>> p.match("dolittle").group()
> 'do'
> 
> Python's NFA regexp engine trys only the first option, and happily
> rests on that. There's another example:
> 
>>>> p = re.compile("one(self)?(selfsufficient)?")
>>>> p.match("oneselfsufficient").group()
> 'oneself'
> 
> The Python regular expression engine doesn't exaust all the
> possibilities, but in my application I hope to get the longest possible
> match, starting from a given point.
> 
> Is there a way to do this in Python?


A reply from Tim Peters reminded me that I once programmed a
simple special case of this problem. In particular, given a
lot of strings, my function returns a regexp that efficiently
matches the longest of prefix equal to any of the strings.
If the application is like the examples, where the target RE
is just the or of strings, the method should work well.

 
http://groups.google.com/group/comp.lang.python/msg/a22eb274845653e9


Now I'm thinking of a more general version, that handles all
true regular expressions.


-- 
--Bryan


From ptmcg at austin.rr._bogus_.com  Sat Sep  2 00:11:02 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Sat, 02 Sep 2006 04:11:02 GMT
Subject: simpleparse parsing problem
References: <mailman.10272.1157163438.27775.python-list@python.org>
Message-ID: <qv7Kg.11168$dl.8338@tornado.texas.rr.com>

"David Hirschfield" <davidh at ilm.com> wrote in message 
news:mailman.10272.1157163438.27775.python-list at python.org...
> Anyone out there use simpleparse? If so, I have a problem that I can't 
> seem to solve...I need to be able to parse this line:
>
> """Cen2 = Cen(OUT, "Cep", "ies", wh, 544, (wh/ht));"""
>
> with this grammar:
>
> grammar = r'''
> declaration := ws, line, (ws, line)*, ws
> line        := (statement / assignment), ';', ws
> assignment  := identifier, ws, '=', ws, statement
> statement   := identifier, '(', arglist?, ')', chars?
> identifier  := ([a-zA-Z0-9_.:])+
> arglist     := arg, (',', ws, arg)*
> arg         := expr/ statement / identifier / num / str /
>               curve / spline / union / conditional / definition
> definition  := typedef?, ws, identifier, ws, '=', ws, arg
> typedef     := ([a-zA-Z0-9_])+
> expr        := termlist, ( operator, termlist )+
> termlist    := ( '(', expr, ')' ) / term
> term        := call / identifier / num
> call        := identifier, '(', arglist?, ')'
> union       := '{{', ws, (arg, ws, ';', ws)*, arg, ws, '}}'
> operator    := ( '+' / '-' / '/' / '*' /
>                 '==' / '>=' / '<=' / '>' / '<' )
> conditional := termlist, ws, '?', ws, termlist, ws, ':', ws, termlist
> curve       := (list / num), '@', num
> spline      := (cv, ',')*, cv
> cv          := identifier, '@', num
> list        := '[', arg, (',', ws, arg)*, ']'
> str         := '"', ([;] / chars)*, '"'
> num         := ( scinot / float / int )
> <chars>     := ('-' / '/' / '?' / [a-zA-Z0-9_.!@#$%^&\*\+=<> :])+
> <int>       := ([-+]?, [0-9]+)
> <float>     := ([-+]?, [0-9\.]+)
> <scinot>    := (float, 'e', int)
> <ws>        := [ \t\n]*
> '''
<snip>
>

David -

I converted your simpleparse grammar to pyparsing, which I could then 
troubleshoot.  Here is a working pyparsing grammar, perhaps you can convert 
it back to simpleparse form and see if you make any better progress.

-- Paul


test = """Cen2 = Cen(OUT, "Cep", "ies", wh, 544, (wh/ht));"""


from pyparsing import *

# recursive items need forward decl - assign contents later using '<<' 
operator
arg = Forward()
expr = Forward()
statement = Forward()

float_ = Regex (r"[-+]?[0-9]+\.[0-9]*")
int_   = Regex (r"[-+]?[0-9]+")
scinot = Combine(float_ + oneOf(list("eE")) + int_)
num = scinot | float_ | int_
str_ = dblQuotedString
list_ = "[" + delimitedList(arg) + "]"
identifier = Word(alphas, srange("[a-zA-Z0-9_.:]"))
cv = identifier + "@" + num
spline = delimitedList(cv)
curve = (list_ | num) + "@" + num
conditional = expr + "?" + expr + ":" + expr
operator = oneOf( ('+', '-', '/', '*', '==', '>=', '<=', '>', '<') )
union = "{{" + delimitedList( arg, delim=";" ) + "}}"
call = identifier + "(" + delimitedList(arg) + ")"
term = call | identifier | num | Group( "(" + expr + ")" )
expr << (term + ZeroOrMore( operator+term ) )
typedef = Word( alphas, alphanums )
definition = ( (typedef + identifier) | identifier ) + "=" + arg
arg << (expr | statement | identifier | num | str_ | "." |
               curve | spline | union | conditional | definition)
assignment = identifier + "=" + statement
statement << ( call | assignment )
line_ = statement + ';'
declaration = OneOrMore(line_)

print declaration.parseString(test)

Prints:
['Cen2', '=', 'Cen', '(', 'OUT', '"Cep"', '"ies"', 'wh', '544', ['(', 'wh', 
'/', 'ht', ')'], ')', ';']





From steve at holdenweb.com  Thu Sep  7 18:41:36 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 23:41:36 +0100
Subject: SQLwaterheadretard3 (Was: Is it just me, or is Sqlite3 goofy?)
In-Reply-To: <1157667594.051943.265040@d34g2000cwd.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
Message-ID: <edq75o$d3d$1@sea.gmane.org>

mensanator at aol.com wrote:
> Bruno Desthuilliers wrote:
> 
>>mensanator at aol.com wrote:
>>
>>>Probably just me. I've only been using Access and SQL Server
>>>for 12 years, so I'm sure my opinions don't count for anything.
>>>
>>
>>SQLite never pretended to be a full-blown RDBMS - just a lightweight
>>simple embedded database as SQL-compliant as possible.
> 
> 
> Ah, *you* haven't read the documentation either!
> 
> "as SQL-compliant as possible"?
> 
> ROTFLMAO!
> 
>>From SQLite Homepage
>   documentation
>     Available Documentation
>       Distinctive Features
> 
> <quote *emphasis added*>
> This page highlights some of the characteristics of SQLite
> that are unusual and which make SQLite different from many
> other SQL database engines.
> 
> Manifest typing
> 
> Most SQL database engines use static typing. A datatype is
> associated with each column in a table and only values of
> that particular datatype are allowed to be stored in that
> column. SQLite relaxes this restriction by using manifest
> typing.
> 
> In manifest typing, the datatype is a property of the
> value itself, not of the column in which the value is
> stored. SQLite thus allows the user to store any value
> of any datatype into any column regardless of the declared
> type of that column. (There are some exceptions to this
> rule: An INTEGER PRIMARY KEY column may only store
> integers. And SQLite attempts to coerce values into the
> declared datatype of the column when it can.)
> 
> ***********************************************************
> * The SQL language specification calls for static typing. *
> ***********************************************************
> 
> So some people feel that the use of manifest typing is a
> bug in SQLite. But the authors of SQLite feel very
> strongly that this is a feature.
> 
> **********************************************************
> * The authors argue that static typing is a bug in the   *
> * SQL specification that SQLite has fixed in a backwards *
> * compatible way.                                        *
> **********************************************************
> </quote>
> 
> "Fixed"? Up until now, I didn't think it was possible for
> crackpot theories to be implemented in computer science.
> This is absolutely the craziest thing I've ever heard.
> 
> Manifest typing doesn't work *in theory*!! Sure, through
> diligent data integrity management it can be made to work
> in practice. But when that's applied, guess what? All your
> fields end up having the same data type anyway. Duh.
> 
> And Python's inclusion of this into the standard library
> is like the AMA endorsing homeopathy. It should have
> been pointed out in the Python Manuals that SQLite3 is
> 
> ----> NOT <----
> 
> SQL-compliant, never will be, and true SQL-compliant code
> 
> ----> CANNOT <----
> 
> be made to work in this environment. So much for
> "If switching to a larger database such as PostgreSQL or Oracle
> is later necessary, the switch should be relatively easy."
> 
Sorry. I have written code that started out on SQLite and migrated it to 
other databases. Sure, your milage may vary. But the wailing and 
gnashing of teeth is complete unnecessary.

> That does not, of course, mean I don't have a use for a light,
> simple database that's part of the standard library. But I could
> have saved myself a lot of wailing and gnashing of teeth if I
> hadn't been lied to by the Python documentation that, like you,
> has the mistaken belief that SQLite3 is SQL-compliant.
> 
> Fixing the documentation is now becoming an enormous task.
> 
> What are the chances that anything I send in as a bug report
> will simply be ignored? Kind of like the Emporer's New Clothes, eh?
> It would be an admission of ignorance and stupidity on the part
> of the Python Development Team, wouldn't it?
> 
No, when they need ignorance and stupidity they normally look to the 
user base ;-)

I'm sure your doc patch will receive the same courteous consideration 
that my early suggestions for amendment did, and your name will join 
mine in the list of contributors.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bolderaft at gmail.com  Sat Sep 16 22:31:44 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 16 Sep 2006 19:31:44 -0700
Subject: Pythondocs.info : collaborative Python documentation project
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.188.1158442368.10491.python-list@python.org>
Message-ID: <1158460304.822650.114560@d34g2000cwd.googlegroups.com>

Here is an idea for improving Python official documentation:

Provide a tab-based interface for each entry, with the overview/summary
at the top-level, with a row of tabs underneath:
        1. Official documentation, with commentary posted at the bottom
(ala Django documentation)
        2. Examples wiki
        3. Source code browser with a folding/docstring mode
        4. Bugs/To-Do

Of course, building this would take a lot of work, and I'm not offering
to build it myself...I just find that something like this is what I've
been longing for.



From steve at holdenweb.com  Sat Sep 30 04:10:14 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 09:10:14 +0100
Subject: The Python world tries to be polite [formerly offensive to  
	another language]
In-Reply-To: <1159601820.592847.42160@i3g2000cwc.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>	<1159555450.721085.51710@h48g2000cwc.googlegroups.com>	<mailman.990.1159598785.10491.python-list@python.org>
	<1159601820.592847.42160@i3g2000cwc.googlegroups.com>
Message-ID: <efl8ni$ieb$1@sea.gmane.org>

MonkeeSage wrote:
> Steve Holden wrote:
> 
>>Perhaps so, but none the less comp.lang.perl has a demonstrable history
>>of newbie-flaming. Don't know what it's like now, as it's years since I
>>read that group, but they used to just love the smell of crisply-toasted
>>newbie in the morning ;-)
> 
> 
> C'mon! No reason why a newbie should be confused by a hyper-fatugly,
> err, "hyper-fatarrow" every now and then [1]! What, are newbies totally
> dense or something?! ;))
> 
> [1] http://www.nntp.perl.org/group/perl.perl6.language/25946
> 

My God, Perl 6 is going to be even less comprehensible that Perl 5, 
which was at least usable. Is ?=>? really a Perl6 operator? That's too 
funny!

hoping-the-chevrons-were-emphasis-on-ly y'rs  - steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Mon Sep 25 18:26:14 2006
From: sjmachin at lexicon.net (John Machin)
Date: 25 Sep 2006 15:26:14 -0700
Subject: Problems with Python 2.5 installer.
In-Reply-To: <1159185801.416379.280870@m7g2000cwm.googlegroups.com>
References: <1159185801.416379.280870@m7g2000cwm.googlegroups.com>
Message-ID: <1159223174.531918.302610@m7g2000cwm.googlegroups.com>


paw wrote:
> I have ran the MSI installer for Python 2.5 several times attempting to
> install to C:
> Python, however all of the files are placed in C:\ .  The installer is
> told to only install files for me, beyond that I have only chosen the
> defaults.

What do you mean by "install to C: <newline> Python"? Can you tell us
(unambiguously, on one line) what directory you chose? Is there any
good reason why you didn't take the default, which is
    C:\Python25
?

>
> If I copy the files after installation, then uninstall Python, I can
> still use the application.  However I am unable to install py2exe since
> it does not see Python in the registry, py2exe refuses to install when
> the Python files are in C:\ .
>
> The system in am installing on is WinXP SP 2 and I have enough admin
> rights on the machine to install software.
>
> Google turned up nothing useful that I could find, is anyone else
> seeing this problem?

There's been no mention that I've noticed.

Cheers,
John



From franz.steinhaeusler at gmx.at  Sun Sep 17 12:23:00 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Sun, 17 Sep 2006 18:23:00 +0200 (CEST)
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
	<n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>
	<20060916174324.2237.20755.XPN@orion.homeinvalid>
	<q2iog21vr7sfgc2dhjb4jj5ld3nprbnbd4@4ax.com>
	<20060917074241.2241.57001.XPN@orion.homeinvalid>
	<eejs1t$rba$1@newsreader2.utanet.at>
Message-ID: <eejsp4$t35$1@newsreader2.utanet.at>

Franz Steinhaeusler wrote:

> A user defineable Title bar as in Agent would be good.
> (Then I could name the first instance "My News" or so, and the 
> second one "Gmane". So easier navigating in Windows and also 
> the tips in the task bar could be helpful for that.
>

Sorry, I repost this, because I accidentially inserted
Signatur headers ("--") to split the points, so again:

A user defineable Title bar as in Agent would be good.
(Then I could name the first instance "My News" or so, and the 
second one "Gmane". So easier navigating in Windows and also 
the tips in the task bar could be helpful for that.

I find it useful in every program to have accelerator keys for 
buttons, radio boxes, ...; this means for example the underscor letter
on the first letter in the label. Some are, some are not.

The line spacing (vertically) in the header is a little higher than in wxPython programs
or also in Forte agent. I suspect, this is a "feature" in PyGtk.
narrower lines would display more headers, this means more headers would be visible at once.

Is Saving attachments possible? I didn't see a menu point, nor are the threads
are marked, having an attachment.

An option to set X-No Archive default in the subscribed groups would be
nice.

Only an open thought:

I (am/was) a member of the python editor DrPython written in wxPython.
(Project is on the sourceforge page).
I contributed some plugins for that, and I like the idea very much.
The core of the program remains relativly small, and all the users can 
extend the program.
The author do not have to fulfil all feature requests in the core,
and can tell the users to extend the functionality with a plugin 
himself, or can assist him.
And aside from writing plugins, I enjoyed.
We have an repository of the plugins and there are far more than 10 available.
Would such an idea make sense for XPN?


XPN seems pretty stable and I enjoy this program more and more!

Cheers,

-- 
Franz Steinhaeusler



From tim.golden at viacom-outdoor.co.uk  Wed Sep 20 10:19:44 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 20 Sep 2006 15:19:44 +0100
Subject: Using py2exe to wrap a service?
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B47E@vogbs009.gb.vo.local>

[Thomas Heller]
| Tim Golden schrieb:
| > [Maria.Reinhammar at accalon.com]
| > 
| > [... snip ...]
| > 
| > |   File "win32com\client\__init__.pyc", line 73, in GetObject
| > |   File "win32com\client\__init__.pyc", line 88, in Moniker
| > | pywintypes.com_error: (-2147221020, 'Invalid syntax', None, None)
| > | 
| > | The offending line is:
| > | import active_directory as AD
| > | ...
| > | for item in AD.search ("objectCategory='Person'"):
| > 
| > Not infrequently -- and quite bizarrely -- "Invalid syntax"
| > errors in COM sometimes come down to a mishandling of threading. 
| > To ask the obvious: do you have a pythoncom.CoInitialize ()
| > somewhere in your code?
| > 
| > This is a bit invisible, because Services are inherently
| > threaded, while you were probably running it before
| > unthreaded.
| > 
| > May not be the answer, but worth a try.
| 
| Maybe another possibility is that py2exe fails to include makepy
| generated modules.  Could that lead to this error?

Could easily be. I vaguely remember some similar problem
with the WMI module, which I worked around by not doing
a dynamic import in the end... or something. Don't think
I've got the option here. (I wrote the active_directory
module, in case it wasn't clear).

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
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From sjmachin at lexicon.net  Thu Sep 28 18:53:39 2006
From: sjmachin at lexicon.net (John Machin)
Date: 28 Sep 2006 15:53:39 -0700
Subject: Whither binary search?
In-Reply-To: <KGm*WNVrr@news.chiark.greenend.org.uk>
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
	<y4fSg.1876$5i7.112@newsreading01.news.tds.net>
	<mailman.732.1159299946.10491.python-list@python.org>
	<1159305704.997567.250020@k70g2000cwa.googlegroups.com>
	<KGm*WNVrr@news.chiark.greenend.org.uk>
Message-ID: <1159484019.885950.267710@k70g2000cwa.googlegroups.com>


Sion Arrowsmith wrote:
> John Machin <sjmachin at lexicon.net> wrote:
> >Fredrik Lundh wrote:
> >> well, people tend to use dictionaries when they need to look things up
> >> quickly...
> >... like those paper dictionaries with the words in alphabetical order
> >:-)
>
> ... where you'll notice that the really big ones are divided up into
> buckets (which just happen to be keyed on initial letter).

And languages whose scripts don't have letters use other bucket keys
like pronunciation  or (radical, stroke_count). In any case, the
buckets are printed in key order. The bucket index, if printed, is
itself sorted.

>
> Truth is that humans are lot better than computers at general
> insertion sort, and its lookup equivalent, whereas computers are much
> better at calculating hashes. So we each use a dictionary
> implementation that plays to our strengths.

Hashes are fine for simplistic applications.
| >>> hash('initialise') == hash('initialize')
| False
but those two are not very far apart in a sorted list.

Cheers,
John



From deets at nospam.web.de  Fri Sep  1 13:45:00 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 01 Sep 2006 19:45:00 +0200
Subject: disgrating a list
In-Reply-To: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
Message-ID: <4lr9ssF39q4lU2@uni-berlin.de>

jwaixs schrieb:
> Hello,
> 
> How can I disgrate (probably not a good word for it) a list? For
> example:
> 
> a = [1,2]
> b = 3
> c = [a] + [b]     # which makes [[1,2],3]

Why do you wrap a in a list? Just

c = a + [b]

will do it.

Diez


From johnzenger at gmail.com  Tue Sep 26 13:52:57 2006
From: johnzenger at gmail.com (johnzenger at gmail.com)
Date: 26 Sep 2006 10:52:57 -0700
Subject: Query regarding grep!!
References: <20060926061233.23085.qmail@web8709.mail.in.yahoo.com>
	<mailman.634.1159252305.10491.python-list@python.org>
Message-ID: <1159293176.945343.46260@h48g2000cwc.googlegroups.com>

You could also use itertools:

import itertools
import re

find = re.compile("pattern")
for line in itertools.ifilter(lambda x: find.search(x),
file(filepath)):
    print line

Fredrik Lundh wrote:
> bhavya sg wrote:
>
> >  I saw in PEP4 of python 2.5 that grep module has gone
> > obsolete in perl 2.5. But I am not able to find an
> > alternative for that.
>
> the grep module has been deprecated for ages (it's been in the lib-old
> non-standard library since at least Python 2.1).  The old grep module
> depends on the regex module, which has been deprecated since Python 1.6,
> and which was finally removed in Python 2.5.
>
>  > My doubt is "are the other forms of grep like egrep and ggrep be used
>  > instead"?
>
> there are no such modules in Python, afaik.
>
> (and that's a question, not a doubt, right?)
>
> if you have Python code that uses the grep module, you can replace it
> with something like:
>
>      import re
>
>      def simple_grep(filename, pattern):
>          find = re.compile(pattern).search
>          for index, line in open(filename):
>              if find(line):
>                  print filename, index, line[:-1]
>
> where pattern is an RE-style pattern, not a REGEX-style pattern (see the
> RE documentation for details).
> 
> </F>



From casioculture at gmail.com  Sat Sep  2 00:09:54 2006
From: casioculture at gmail.com (casioculture at gmail.com)
Date: 1 Sep 2006 21:09:54 -0700
Subject: IndentationError: expected an indented block
Message-ID: <1157170194.270363.67430@h48g2000cwc.googlegroups.com>


Haha. How can I fix this!



From robertobech at gmail.com  Sun Sep 24 09:44:39 2006
From: robertobech at gmail.com (Roberto Bechtlufft)
Date: 24 Sep 2006 06:44:39 -0700
Subject: RSS aggregator with curses and feedparser
Message-ID: <1159105479.747450.222690@d34g2000cwd.googlegroups.com>

Hi, I'm new around here... I'm a Python hobbyist, and I'm far from
being a professional programmer, so please be patient with me...

I'm working on my first Python program: a curses based RSS Aggregator.
It's basically a clone of snownews, one of my very favorite programs.
But I want to add some funcionality. Whenever you update a feed in
snownews, it loses all previous topics, even though you may not have
read them, it only keeps the current topics. I want my program to
actually aggregate feeds. Also, I want to make it able to read atom
feeds, which is easy since I'm using feedparser. I see that liferea
keeps a cache file for each feed it downloads, storing all of it's
topics. I'm doing the same here.

A question: how do I tell my program that a certain entry was/wasn't
downloaded yet? Should I use the date or link tag of the entry?



From fumanchu at amor.org  Tue Sep 19 11:29:50 2006
From: fumanchu at amor.org (fumanchu)
Date: 19 Sep 2006 08:29:50 -0700
Subject: Compile AST to bytecode?
In-Reply-To: <1158671891.530951.277330@k70g2000cwa.googlegroups.com>
References: <1158668372.706298.123280@i3g2000cwc.googlegroups.com>
	<Xns98438DE1018EEduncanbooth@127.0.0.1>
	<1158671891.530951.277330@k70g2000cwa.googlegroups.com>
Message-ID: <1158679790.276800.284630@i3g2000cwc.googlegroups.com>

Rob De Almeida wrote:
> Duncan Booth wrote:
> > > I would like to compile an AST to bytecode, so I can eval it later.
> > I'm not sure there are any properly documented functions for converting an
> > AST to a code object, so your best bet may be to examine what a
> > pycodegen class like Expression or Module actually does.
>
> Thanks, Duncan. It worked perfectly. :-)
>
> For arbitrary nodes I just had to wrap them inside an Expression node:
>
> >>> ast = compiler.ast.Expression(node)
> >>> ast.filename = 'dummy'
> >>> c = compiler.pycodegen.ExpressionCodeGenerator(ast)
> >>> obj = eval(c.getCode(), scope)

If you're only worried about expressions, then you can have CPython do
the compilation for you much faster by wrapping the expression in a
lambda:

>>> f = lambda: 42
>>> f.func_code.co_code
'd\x01\x00S'
>>> map(ord, _)
[100, 1, 0, 83]

>>> g = lambda x, y: (x * 3) + len(y)
>>> map(ord, g.func_code.co_code)
[124, 0, 0, 100, 1, 0, 20, 116, 1, 0, 124, 1, 0, 131, 1, 0, 23, 83]

For a complete round-trip Expression library, see
http://projects.amor.org/dejavu/browser/trunk/logic.py


Robert Brewer
System Architect
Amor Ministries
fumanchu at amor.org



From prestonh at gmail.com  Mon Sep 11 17:23:47 2006
From: prestonh at gmail.com (Preston Hagar)
Date: Mon, 11 Sep 2006 16:23:47 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <%b2Ng.6030$v%4.934@newsread1.news.pas.earthlink.net>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<44fd309b$0$306$626a54ce@news.free.fr>
	<1157667594.051943.265040@d34g2000cwd.googlegroups.com>
	<edrhmg$5t3$1@wake.carmen.se>
	<1157752108.456624.146270@i3g2000cwc.googlegroups.com>
	<gcsMg.9006$bM.550@newsread4.news.pas.earthlink.net>
	<z9ZMg.9635$bM.7954@newsread4.news.pas.earthlink.net>
	<1157932363.904338.181180@p79g2000cwp.googlegroups.com>
	<%b2Ng.6030$v%4.934@newsread1.news.pas.earthlink.net>
Message-ID: <8f5897560609111423u3048e2ebha3138b5add5ac45c@mail.gmail.com>

> 	Unfortunately, I don't think they are going to duplicate the 200 or
> so page O'Reilly SQLite book as part of the help system (even if that
> book is quite out-of-date; there is one skinny chapter near the end that
> explains what changes "will appear" in the version that has been
> available for Python for over a year now).
> --

Just to let you (and everyone else know) there is a new SQLite book
out from APress that covers SQLite 3

http://www.apress.com/book/bookDisplay.html?bID=10130

It actually has a section that covers what a lot of these postings
have been discussing, check constraints.  You can actually implement
type checking constraints in SQLite with very little additional code.
That way it will give you an error message if you try to insert
something of the wrong type.

HTH,

Preston


From jon+usenet at unequivocal.co.uk  Tue Sep 26 09:48:20 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 13:48:20 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
Message-ID: <slrnehibsm.9o0.jon+usenet@snowy.squish.net>

In article <mailman.680.1159277904.10491.python-list at python.org>, Fredrik Lundh wrote:
> Jon Ribbens wrote:
> 
>>> does the word "information set" mean anything to you?
>>
>> You would appear to be talking about either game theory, or XML,
>> neither of which have anything to do with HTML.

I notice that yet again you've snipped the substantial point and
failed to answer it, presumably because you don't know how.

> you see no connection between XML's concept of information set and
> HTML?   (hint: what's XHTML?)

I am perfectly well aware of what XHTML is. If you're trying to make
a point, please get to it, rather than going off on irrelevant
tangents. What do XML Information Sets have to do with escaping
control characters in HTML?


From http  Thu Sep  7 01:07:47 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 22:07:47 -0700
Subject: Refactor a buffered class...
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
Message-ID: <7x3bb4l0ws.fsf@ruckus.brouhaha.com>

lh84777 at yahoo.fr writes:
> for: s = "this . is a . test to . check if it . works . well . it looks
> . like ."
> the output should be (if grouping by 3) like:
> 
> => this .
> => this . is a .

I don't understand, you mean you have all the items in advance?
Can't you do something like this?  I got bleary trying to figure out
the question, so I'm sorry if I didn't grok it correctly.

  def f(n, items):
      t = len(items)
      for i in xrange(-(n-1), t-n):
          print items[max(i,0):max(i+n,0)]

  s = 'this . is a . test to . check if it . works . well . it looks . like .'
  f(3, s.split('.'))

>>> ## working on region in file /usr/tmp/python-306302aD...
['this ']
['this ', ' is a ']
['this ', ' is a ', ' test to ']
[' is a ', ' test to ', ' check if it ']
[' test to ', ' check if it ', ' works ']
[' check if it ', ' works ', ' well ']
[' works ', ' well ', ' it looks ']
[' well ', ' it looks ', ' like ']


From tim at tdw.net  Sun Sep 17 11:56:38 2006
From: tim at tdw.net (Tim Williams)
Date: Sun, 17 Sep 2006 16:56:38 +0100
Subject: Limitate speed of a socket-based data transferring
In-Reply-To: <R52448015.821.209.1@mx-extra>
References: <1158234888.710617.63500@h48g2000cwc.googlegroups.com>
	<zpAOg.12468$xQ1.1498@newsread3.news.pas.earthlink.net>
	<12gllfkki918r7a@corp.supernews.com>
	<mailman.141.1158341957.10491.python-list@python.org>
	<R52448015.821.209.1@mx-extra>
Message-ID: <9afea2ac0609170856w50b3e4b0o6d52219ea6decfcd@mail.gmail.com>

On 15/09/06, Grant Edwards <grante at visi.com> wrote:
> On 2006-09-15, Steve Holden <steve at holdenweb.com> wrote:

> >
> > Of course this depends crucially on the window size. Since the
> > addition of the window scaling TCP option it's been possible
> > to specify very large windows, which are useful over
> > high-bandwidth high-delay links.
>
> True.  If the window size is large compared to the amount of
> data being transferred, then the throttling won't happen.
>
> > The remote (send) throttling will only start to cut in when
> > the window is full (since the whole point of the sliding
> > window mechanism is to allow continuous transmission in the
> > face of acknowledgment delay).
>
> Yup.

If the OP is also writing the client,  the throttling can be at the
client side to control the speed of writing to the socket.  But if
multiple clients connect to the server concurrently then this may not
help either!

:)


From raschulmanxx at verizon.net  Fri Sep  8 14:26:42 2006
From: raschulmanxx at verizon.net (Richard Schulman)
Date: Fri, 08 Sep 2006 18:26:42 GMT
Subject: cx_Oracle question
Message-ID: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>

I'm having trouble getting started using Python's cx_Oracle binding to
Oracle XE. In forthcoming programs, I need to set variables within sql
statements based on values read in from flat files. But I don't seem
to be able to get even the following stripped-down test program to
work:

import cx_Oracle
connection = cx_Oracle.connect("username", "password")
cursor = connection.cursor()

arg_1 = 2 #later, arg_1, arg_2, etc. will be read in files

cursor.execute("""select mean_eng_txt from mean
                  where mean_id=:arg_1""",arg_1)
for row in cursor.fetchone():
    print row
cursor.close()
connection.close()

The program above produces the following error message:

C:\pythonapps>python oracle_test.py
Traceback (most recent call last):
   File "oracle_test.py", line 7, in ?
      cursor.execute('select mean_eng_txt from mean where
      mean_id=:arg_1',arg_1)
TypeError: expecting a dictionary, sequence or keyword args

What do I need to do to get this sort of program working?

TIA,
Richard Schulman
For email reply, remove the xx characters         


From mario.danic at gmail.com  Thu Sep 28 08:27:17 2006
From: mario.danic at gmail.com (mario.danic at gmail.com)
Date: 28 Sep 2006 05:27:17 -0700
Subject: Writing python extensions for libburn & libisofs
Message-ID: <1159446437.648881.214550@i42g2000cwa.googlegroups.com>

Hello,

If there is anyone familiar with python C api, and would like to get
involved with writing python extensions for above two libs
(http://libburn.pykix.org) please contact me.

Kind regards,
Mario



From fredrik at pythonware.com  Sun Sep 24 06:51:32 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 12:51:32 +0200
Subject: Tkinter button not working as expected
In-Reply-To: <1158953559.033768.3890@d34g2000cwd.googlegroups.com>
References: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>	<mailman.448.1158918845.10491.python-list@python.org>
	<1158953559.033768.3890@d34g2000cwd.googlegroups.com>
Message-ID: <ef5nvk$tah$1@sea.gmane.org>

vagrantbrad at yahoo.com wrote:

> Thank you Fredrik.  It makes total sense now that you've explained it
> this way.  I frustrated at my ignorance on the assignment issue :)

well, it's one of those "you'll only do this once" mistakes that 
*everyone* does (mutable default arguments and unexpected integer 
division are two of the others).

it's the "I'm always doing this" mistakes that are really frustrating 
(for me, "'str' object has no attribute 'startwith'" is at the top of 
that list...)

</F>



From apardon at forel.vub.ac.be  Tue Sep 26 08:21:32 2006
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 26 Sep 2006 12:21:32 GMT
Subject: Surprise using the 'is' operator
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
	<1159264481.693180.67850@e3g2000cwe.googlegroups.com>
	<mailman.658.1159265280.10491.python-list@python.org>
Message-ID: <slrnehi6qc.rcu.apardon@rcpc42.vub.ac.be>

On 2006-09-26, Fredrik Lundh <fredrik at pythonware.com> wrote:
> codefire wrote:
>
>> I was just trying to check if objects were the same (object), didn't
>> know Integers were a special case.
>
> they're not, really; "is" works the same way for all objects.
>
> when you ask for a new immutable object, a Python implementation may 
> always reuse an existing object, if it wants to.
>
> the CPython implementation does this for small integers, booleans, None, 
> empty tuples, certain strings, type objects, etc.  this also applies to 
> library code; for example, string methods often return a reference to 
> "self" if the method didn't actually change anything.

I find this a bit oddly worded. Now the "may always reuse" phrase
suggests this is not an obligation and I can certainly understand
that in the case of integers. But when you enumerate examples you
include None and Booleans, creating the suggestion these don't
have to be implemented as singletons either and that there can be
more than one None, True and False object. Now I probably just
misunderstand, but I'm wondering, is there somewhere in the language
reference that specifies these have to be singletons?

-- 
Antoon Pardon


From jmcmonagle at velseis.com.au  Thu Sep  7 19:48:03 2006
From: jmcmonagle at velseis.com.au (John McMonagle)
Date: Fri, 08 Sep 2006 09:48:03 +1000
Subject: split string problems
In-Reply-To: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>
References: <1157671311.093581.151610@h48g2000cwc.googlegroups.com>
Message-ID: <1157672883.5475.1.camel@kuepper.vels-int.com.au>

On Thu, 2006-09-07 at 16:21 -0700, Tempo wrote:
> [<span class="sale">
>                                         $14.99
>                                 </span>, <span class="sale">
>                                         $27.99
>                                 </span>, <span class="sale">
>                                         $66.99
>                                 </span>, <span class="sale">
>                                         $129.99
>                                 </span>, <span class="sale">
>                                         $254.99
>                                 </span>]

Worked alright for me (see below).  Are you sure "p" is a string ?

Cut and paste from interactive python shell:

>>> p = """
... [<span class="sale">
...                                         $14.99
...                                 </span>, <span class="sale">
...                                         $27.99
...                                 </span>, <span class="sale">
...                                         $66.99
...                                 </span>, <span class="sale">
...                                         $129.99
...                                 </span>, <span class="sale">
...                                         $254.99
...                                 </span>]"""
>>> p.split()
['[<span', 'class="sale">', '$14.99', '</span>,', '<span',
'class="sale">', '$27.99', '</span>,', '<span', 'class="sale">',
'$66.99', '</span>,', '<span', 'class="sale">', '$129.99', '</span>,',
'<span', 'class="sale">', '$254.99', '</span>]']
>>> p.split()[2]
'$14.99'
>>>

Regards,

John


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



From dummy at dummy.nl  Wed Sep 13 15:58:42 2006
From: dummy at dummy.nl (Cecil Westerhof)
Date: Wed, 13 Sep 2006 21:58:42 +0200
Subject: urllib en https
Message-ID: <450862f2$0$4521$e4fe514c@news.xs4all.nl>

I have a strange problem. I wrote a script that uses urllib.urlopen to fetch
a page through https. In Python 2.2.2 this works without a problem. But
when I use the script in Python  I get:

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/local/lib/python2.4/urllib.py", line 79, in urlopen
    return opener.open(url, data)
  File "/usr/local/lib/python2.4/urllib.py", line 177, in open
    return self.open_unknown(fullurl, data)
  File "/usr/local/lib/python2.4/urllib.py", line 189, in open_unknown
    raise IOError, ('url error', 'unknown url type', type)
IOError: [Errno url error] unknown url type: 'https'

What is happening here? And how can I solve this?



From fredrik at pythonware.com  Tue Sep 12 07:22:54 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 13:22:54 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee4m16$og$1@sea.gmane.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
Message-ID: <ee65ad$2v3$1@sea.gmane.org>

Steve Holden wrote:

> Sure. But if you go back to the start of the thread you'll remember the 
> OP was originally complaining that SQLite was being promoted in the 
> Python docs as SQL compliant. It clearly isn't if its response to the 
> insertion of a data value that conflicts with the declared column type 
> is to store a value whose type is something else.

the standard actually says "If the value of any input parameter provided 
by the SQL-agent falls outside the set of allowed values of the data 
type of the parameter /.../ the effect is implementation-defined" so 
that's perfectly SQL92 compliant.

in fact, the phrases "is implementation-defined" and "is implementation-
dependent" occurs hundreds of times in the SQL92 standard.

it's far from obvious to me that SQL92 would rule out storing everything 
as strings ("The physical representation of a value is implementation-
dependent.") and leaving it to the language binding to map things back 
to the host language types in whatever way it wants ("Each host language 
has its own data types, which are separate and distinct from SQL data 
types", the above quotation, and so on).

looks like the real problem here is that some people think that 
"implementation-defined" means "works as it did in that other database 
I'm using", and not "specified by the implementor for each particular 
SQL-implementation".  that's not how standards work; if something's 
explicitly left undefined, it's not something you can rely on.

</F>



From steve at holdenweb.com  Tue Sep 26 09:11:09 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 09:11:09 -0400
Subject: QuoteSQL
In-Reply-To: <efb0bk$8e5$1@lust.ihug.co.nz>
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<Xns98498D79318AFduncanbooth@127.0.0.1>	<efapj7$rfd$2@lust.ihug.co.nz>	<Xns984A6E99A1A73duncanbooth@127.0.0.1>
	<efb0bk$8e5$1@lust.ihug.co.nz>
Message-ID: <451926ED.8090506@holdenweb.com>

Lawrence D'Oliveiro wrote:
> In message <Xns984A6E99A1A73duncanbooth at 127.0.0.1>, Duncan Booth wrote:
> 
> 
>>However, your QuoteSQL messes up every time because it wraps double
>>quotes round the whole string, so it isn't suitable for use with
>>parameterised queries at all. If you care to modify it to work in that
>>situation I think you'll find that the only characters you need to quote
>>are \, % and _.
> 
> 
> That won't work--that puts you into stupid mistake number 2.
> 
> I think autoquoting is fine as far as it goes. But it cannot cope with
> wildcards, since it can't tell whether the string is being used in a LIKE
> clause without doing its own parsing of the MySQL query. And there are
> situations where you cannot rely on it, as in the QuoteSQLList example I
> gave earlier. This is why my QuoteSQL function cannot be designed to work
> together with autoquoting, but has to be used as a complete replacement for
> it.
> 
> 
>>In particular it currently turns newlines in backslash followed by n which
>>(since MySQL ignores the extra backslash escape) is equivalent to turning
>>newlines into the character n.
> 
> 
> But \n is valid MySQL syntax for a newline.

Phew. It's a good hob that MySQL is the only database in the known 
universe, then, isn't it.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From btowle at carnegielearning.com  Thu Sep 28 13:01:54 2006
From: btowle at carnegielearning.com (Brendon Towle)
Date: Thu, 28 Sep 2006 13:01:54 -0400
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.2011.1159461903.10490.python-list@python.org>
References: <mailman.2011.1159461903.10490.python-list@python.org>
Message-ID: <D5F05FAC-8A68-4483-A89F-3375B3C5CE93@carnegielearning.com>

On 28 Sep 2006, at 12:45 PM, python-list-request at python.org wrote:

> From: "MonkeeSage" <MonkeeSage at gmail.com>
> Subject: Re: Questions on Using Python to Teach Data Structures and
> 	Algorithms
> To: python-list at python.org
>
> [snip]
> But Brendon's code also needs a correction: [a].extend(b) is wrong,
> because extend is in-place and returns None, and [a] is anonymous...it
> needs to be something like:
>
> def cons(a, b):
>   b.insert(0, a)
>   return b

Clearly, my Lisp is better than my Python; I stand corrected. (Brings  
back memories of the "Why don't destructive sequence operations  
return the sequence?" thread.)

I think I'd probably prefer:

def cons(a,b):
     res = [a]
     res.extend(b)
     return res

because cons is supposed to leave its second argument untouched.

B.

-- 
Brendon Towle, PhD
Cognitive Scientist
+1-412-690-2442x127
Carnegie Learning, Inc.
The Cognitive Tutor Company ?
Helping over 375,000 students in 1000 school districts succeed in math.




From onurb at xiludom.gro  Fri Sep 29 07:47:04 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 29 Sep 2006 13:47:04 +0200
Subject: Pysqlite tables in RAM
In-Reply-To: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
References: <1159527458.488317.67350@b28g2000cwb.googlegroups.com>
Message-ID: <451d07b8$0$8603$626a54ce@news.free.fr>

Ranjitha wrote:
> Hi all,
> 
> I'm relatively new to python 

And to databases ?

> and am facing a problem with database
> access
> 
> I want to store my data in a database on the disk. I also want to be
> able to reload the tables into the RAM whenever I have a lot of disk
> accesses and commit the changes back to the database.

This should be the database duty, not yours. Serious RDBMS are highly
optimized wrt/ caching and file I/O, and there are very few chances you
can do anything better by yourself.

> There is an
> option of storing the data in the RAM where you connect to :memory:
> instead of a DB file. The problem with this is that the data is lost
> everytime you close the connection to the database.

Seems quite obvious !-)

> Could somebody
> suggest a way to load the tables into the RAM as tables and not as some
> lists or dictionaries?

There's nothing like a "table" in Python's builtin datatypes !-)

More seriously: don't bother.

Focus first on writing correct code. Then, *if* and *when* you *really*
have a performance problem, *first* use a profiler to check where the
*real* problem is. If it then happens that SQLite is the bottleneck, try
switching to a real RDBMS like PostgreSQL.

Remember the 3 golden rules about optimisation:
1/ don't optimize
2/ don't optimize
3/ for the experts only: don't optimize


My 2 cents...
-- 
bruno desthuilliers
"Premature optimization is the root of all evil."
(some wise guy)


From jaysherby at gmail.com  Thu Sep 28 14:14:58 2006
From: jaysherby at gmail.com (Jay)
Date: 28 Sep 2006 11:14:58 -0700
Subject: Resuming a program's execution after correcting error
In-Reply-To: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
References: <1159447986.754423.258550@e3g2000cwe.googlegroups.com>
Message-ID: <1159467297.929030.202770@i42g2000cwa.googlegroups.com>

I don't know how much help this is going to be, but you could store
values in a temporary file on the hard disk and write checkpoints to
read in the data and begin from a point somewhere in the middle of the
script.

Sheldon wrote:
> Hi.
>
> Does anyone know if one can resume a python script at the error point
> after the error is corrected?
> I have a large program that take forever if I have to restart from
> scratch everytime. The error was the data writing a file so it seemed
> such a waste if all the data was lost and must be recalculated again.
> 
> Sincerely,
> Sheldon



From martin at v.loewis.de  Sat Sep 23 16:26:12 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 23 Sep 2006 22:26:12 +0200
Subject: anybody using python 2.5 that raises error while importing?
In-Reply-To: <%5gRg.5230$UG4.2719@newsread2.news.pas.earthlink.net>
References: <1158934651.251169.149920@k70g2000cwa.googlegroups.com>
	<1158935377.820149.242390@i42g2000cwa.googlegroups.com>
	<1159019033.982301.172480@m7g2000cwm.googlegroups.com>
	<1159021336.190735.215140@e3g2000cwe.googlegroups.com>
	<1159028649.108575.295000@i3g2000cwc.googlegroups.com>
	<%5gRg.5230$UG4.2719@newsread2.news.pas.earthlink.net>
Message-ID: <45159864$0$3004$9b622d9e@news.freenet.de>

Dennis Lee Bieber schrieb:
> On 23 Sep 2006 09:24:09 -0700, "daniel" <daniel.huangfei at gmail.com>
> declaimed the following in comp.lang.python:
> 
>> so the implementation rules of python extension module must have been
>> changed, for now, I have to wait for the new release of that module and
> 
> 	No change... For YEARS the rule has been: Changes in the first
> decimal place (version m.n.o - if "n" changes, new binaries are needed;
> changes in "o" are just bug fixes and don't change the binary interface;
> abandon all hope if "m" changes <G>) of a Python version almost ALWAYS
> require 3rd party binary extensions to be rebuilt.

You should read the entire thread. He couldn't import the extension
module because it ends in .dll; this was a change introduced in Python
2.5: the module must end in .pyd now. That rule had not been there
for YEARS.

Of course, had he renamed the file, it then would have complained
that he's running a 2.4 extension module in 2.5; *that* rule had
been there for YEARS.

Regards,
Martin


From fredrik at pythonware.com  Wed Sep 13 11:23:23 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 13 Sep 2006 17:23:23 +0200
Subject: eval(repr(object)) hardly ever works
In-Reply-To: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <ee97pb$h2$1@sea.gmane.org>

Matthew Wilson wrote:

> I understand that idea of an object's __repr__ method is to return a
> string representation that can then be eval()'d back to life, but it
> seems to me that it doesn't always work. 

when in doubt, read the language reference:

     "If at all possible, this should look like a valid Python
     expression that could be used to recreate an object with
     the same value (given an appropriate environment). If this
     is not possible, a string of the form "<...some useful
     description...>" should be returned.

     http://pyref.infogami.com/__repr__

</F>



From aleax at mac.com  Tue Sep 12 00:58:43 2006
From: aleax at mac.com (Alex Martelli)
Date: Mon, 11 Sep 2006 21:58:43 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07> <4505707E.2080804@redlinepy.com>
	<ee3vme$cjj$1@panix3.panix.com>
	<65sk091eu0l3.axwa5wrm2dtq.dlg@40tude.net>
	<HliNg.2734$No6.53788@news.tufts.edu>
	<of35bfgdmwb6.14r33xqjvzdly$.dlg@40tude.net>
Message-ID: <1hlisyv.hsmsqe1m3htywN%aleax@mac.com>

Thorsten Kampe <thorsten at thorstenkampe.de> wrote:

> * John Salerno (2006-09-11 19:58 +0100)
> > Thorsten Kampe wrote:
> > 
> >> But sqlite is not "pure Python" because it's just a wrapper around
> >> sqlite (which has to be installed separately)...
> > 
> > But that's the point. Once 2.5 is released, sqlite is built-in. Unless
> > there's more to it that I don't know, and something must still be 
> > installed? But that makes no sense.
> 
> I was under the impression that you still have to install the sqlite
> executable but that's only for compiling from source: "If you're
> compiling the Python source yourself, note that the source tree
> doesn't include the SQLite code, only the wrapper module."

You don't _need_ to install the SQlite executable[s] -- maybe the
_libraries_, unless they come bundled w/your Python distro (typically
the case on Win and Mac, but some "sumo distros" for other OSs may
choose to do the same).


Alex


From dadapapa at googlemail.com  Fri Sep 15 21:53:53 2006
From: dadapapa at googlemail.com (Harold Fellermann)
Date: 15 Sep 2006 18:53:53 -0700
Subject: mp3 libs and programs
In-Reply-To: <1158369401.262011.256700@b28g2000cwb.googlegroups.com>
References: <1158369401.262011.256700@b28g2000cwb.googlegroups.com>
Message-ID: <1158371633.640428.313040@m73g2000cwd.googlegroups.com>

hi,

Jay wrote:
> I'm writing a python script that involves playing mp3 files.  The first
> approach I had was sending commands to unix command-line programs in
> order to play them.  I tired mpg123 and moosic, but there was a key
> feature to my program's success that's missing.  SEEK!  I need to be
> able to start playing a song at an arbitrary point in the song.  I
> can't find anything to let me do this.  Does anyone have any advice or
> has anyone needed something similar?

check out pyxmms.



From niemand.leermann at thomas-guettler.de  Tue Sep 19 10:59:20 2006
From: niemand.leermann at thomas-guettler.de (niemand.leermann at thomas-guettler.de)
Date: 19 Sep 2006 14:59:20 GMT
Subject: Pyglade, gtk, howto write more efficiently, and waste less code?
References: <1158675825.605612.313830@i42g2000cwa.googlegroups.com>
Message-ID: <4naeu8F9gcq9U1@individual.net>

Pipiten wrote:

> Hi everybody, i` m new in this group, and python so.., my greetings to
> everybody here.
> I wrote a little program, in wich i do this:
> (I have several "Select File" buttons, one for each file (in this case,
> an image) wich has an text_entry, so i can add a comment for each
> picture.)
>
> def on_button1_clicked(self,widget):
> 	   """Button 1 pressed"""
> 	   image_file1 = FileSelection(self)
> 	   self.path1.set_text(image_file1)
> 	   self.image1.set_from_file(image_file1)
> 	   self.image1.show()
> ...

You can connect all buttons to the same callback,
and in the callback you pick they matching image.

At least that what I would do (Up to now I don't use glade).

 HTH,
  Thomas



From onurb at xiludom.gro  Tue Sep  5 04:08:54 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 05 Sep 2006 10:08:54 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
Message-ID: <44fd309b$0$306$626a54ce@news.free.fr>

mensanator at aol.com wrote:
> Probably just me. I've only been using Access and SQL Server
> for 12 years, so I'm sure my opinions don't count for anything.
> 

SQLite never pretended to be a full-blown RDBMS - just a lightweight
simple embedded database as SQL-compliant as possible. In it's category,
it beats Access and MySQL hands down. Now if you want a real RDBMS,
you've just failed to choose the right tool. May I suggest PostgreSQL ?

(snip useless rant)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From ilias at lazaridis.com  Wed Sep 27 08:11:13 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 27 Sep 2006 05:11:13 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <IinSg.5099$TV3.362@newssvr21.news.prodigy.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<I35Sg.8107$Ij.2250@newssvr14.news.prodigy.com>
	<1159296680.869854.184450@i42g2000cwa.googlegroups.com>
	<IinSg.5099$TV3.362@newssvr21.news.prodigy.com>
Message-ID: <1159359073.023682.234570@m7g2000cwm.googlegroups.com>

James Stroud wrote:
> Ilias Lazaridis wrote:
...
> Well, for example, the output (I'm indenting manually for visual clarity):
>
>       >>> print 'bob'
>         : bob
>       >>> print [i for i in xrange(3)]
>         : [0, 1, 2]
>
>
> Would create the following selection in "doctest" mode (again manually
> adding whitespace):
>
>       >>> print 'bob'
>       bob
>       >>> print [i for i in xrange(3)]
>       [0, 1, 2]

http://docs.python.org/lib/module-doctest.html

ok, I understand now.

then, for consistency reasons, the ":" could become ":::".

doctest would need to get a tiny addition to be able to 'see' those
":::".

> But, say for 'code copy' mode, this selection would be appended to the
> clipboard (again manually adding whitespace for clarity):
>
>       print 'bob'
>       print [i for i in xrange(3)]

I understand.

> This way you could either make doctest blocks or copy code drafted in
> the interactive interpreter. I often get carried away and write complete
> useful functions in the interpreter then have to do commands like the
> following in vim:
>
>       :.,+8s/^....//
>
> to fix ">"s and ellipses, etc., in the copied function. Or if I want to
> tweak a function I'm writing in the interpreter, I painfully copy it one
> line at a time. This may or may not be the best way to use the
> interpreter (to draft actual code) but I find myself doing it all of the
> time.

I am wondering that this functionality (copy code) is not included
within IDLE.

It should be possible to add it quite simple.

.



From cappy2112 at gmail.com  Sat Sep 23 14:25:23 2006
From: cappy2112 at gmail.com (Cappy2112)
Date: 23 Sep 2006 11:25:23 -0700
Subject: Fatal error after RE-installing Python 2.3.4
In-Reply-To: <1158979739.307178.295730@i42g2000cwa.googlegroups.com>
References: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
	<1158979739.307178.295730@i42g2000cwa.googlegroups.com>
Message-ID: <1159035923.389871.77840@d34g2000cwd.googlegroups.com>


> "deleted" the core 2.3.4 distribution [from where? how?] or
> "uninstalled"?
Uninstalled

>> Was c:\windows\system32\python23.dll blown away?
Yes, as part of the uninstall process.

>>> Are you installing it for "all users" or for a single user?
ALl users, using Admin priveledges

> Do a search for python23.dll -- you may find two. This can happen if
> you have switched from one way to the other way. DLL in
> c:\windows\system32 => all users. DLL somewhere else e.g. c:\python23
> => specific user. Check how this is set up on other working boxes.
> Check date and size while you are doing that. Also check what they have
> on their system path compared to yours.

will try on Monday
My path is the same. We all followa detailed installation, tools
configuration procedure/.
I've compared my path to one other workign machine.



> Have you tried running it with the -v commandline arg to see how far it
> gets before crashing?
No- will try it on Monday

> > Oddly enough, when I run Python.exe from the Program Files menu, it
> > launches just fine.
> Yeah, different path.

> Some thoughts and questions:
> 1. Telling us what the allegedly spurious pychecker warnings were would
> be a good idea.

pychecker isn't really a concern at this point- and has ben uninstalled
(actually deleted, since there is no installer/uninstaller for this
package.)
But I was getting lots of missing module warnings, which two of my
co-workers did not get.

> 2. I don't understand the "my job depends" part. Are you responsible
> for providing your own computer and installing your own tool-chain on
> it??
No

>>Is this an initiative test?
No.

>>Can't you get the admin(s) to install a clean tested kit for you?
No.

> 3. What is this PC's history? Has it been used successfully in this
> environment before you turned up?
Yes- I have been using it to run python scripts for the last 2 weeks.
When I saw the pychecker anomally, I decided to rein-install Python & a
few of the packages.

>>Are all the other engineers using the same configuration?
yes

>>> 4. Is Python 2.3.5 a possibility?
No, not in practice. But I tried installing 2.3.5 to see what would
happen.
Same problem.

Thanks



From jmpurser at gmail.com  Mon Sep 11 13:09:33 2006
From: jmpurser at gmail.com (John Purser)
Date: Mon, 11 Sep 2006 10:09:33 -0700
Subject: assistance with python coding
In-Reply-To: <!&!AAAAAAAAAAAYAAAAAAAAAIfJJtCtdYpCgkwH0fZ63UTCgAAAEAAAAFenylNNu99Ev4dFQBNjKxgBAAAAAA==@us.army.mil>
References: <!&!AAAAAAAAAAAYAAAAAAAAAIfJJtCtdYpCgkwH0fZ63UTCgAAAEAAAAFenylNNu99Ev4dFQBNjKxgBAAAAAA==@us.army.mil>
Message-ID: <1157994573.5464.13.camel@localhost.localdomain>

On Mon, 2006-09-11 at 11:23 -0500, John Shappell wrote:
> I don?t understand what this question is asking; can you clarify for
> me and maybe point me in the right direction?
> 
>  
> 
> As an exercise, rewrite this line of code without using a sequence
> assignment. 
> 
> self.cards[i], self.cards[j] = self.cards[j], self.cards[i]
> 
>  
> 
> V/R
> 
>  
> 
> CW2 John Shappell
> 
> 931-980-4707
> 
> FAX 775-618-2455
> 
> john.j.shappelljr at us.army.mil
> 
>  
> 
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list

John,

Sequence assignment is a way of assigning multiple values at once.  In
your example above (adjusted to cut down on typing):
i = 'dog'
j = 'cat'
i, j = j, i

Now:
i == 'cat'
j == 'dog'

The assignment (I believe) is to come up with the same result WITHOUT
using sequence assignment which usually requires some form of temporary
variable to hold the values in the middle while they switch.

Where are you stationed?  Feel free to reply via my gmail account.

John Purser




From jaysherby at gmail.com  Fri Sep 29 19:14:25 2006
From: jaysherby at gmail.com (Jay)
Date: 29 Sep 2006 16:14:25 -0700
Subject: DAT file compilation
Message-ID: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>

Is there a way through python that I can take a few graphics and/or
sounds and combine them into a single .dat file?  If so, how?  And how
can I access the data in the .dat file from inside the python script?



From remi at cherrypy.org  Wed Sep 20 11:49:44 2006
From: remi at cherrypy.org (remi at cherrypy.org)
Date: 20 Sep 2006 08:49:44 -0700
Subject: ANN: Python-2.5 available at WebFaction
Message-ID: <1158767384.591334.91670@k70g2000cwa.googlegroups.com>

Hello everyone,

I'm happy to announce that WebFaction have now installed Python-2.5
on all their servers.

WebFaction (formerly Python-Hosting.com) support all the
major Python web frameworks (Django, TurboGears, CherryPy,
mod_python, Pylons, web.py, ...)

People using Python CGI or Python-2.5-compatible application servers
will be able to use all the new features of Python-2.5 for their
website.

Remi

http://www.webfaction.com - Hosting for an agile web



From robert.kern at gmail.com  Thu Sep 21 23:13:57 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 21 Sep 2006 22:13:57 -0500
Subject: Building things with setup.py
In-Reply-To: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>
Message-ID: <eevkdh$vnq$2@sea.gmane.org>

James Stroud wrote:
> Hello All,
> 
> This is annoying. I am trying to build scipy right now but every .so 
> file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl -shared" 
> to the ld flags.

> I'm running Linux FC4 on a dual intel p4 (~3.2 GHz) with sundry 
> libraries in non-standard places. Is this non-standard part what's 
> killing me?

It's possible that distutils is not finding the information about how the python 
interpreter was built. Did you build your own python(1)? Is the information in 
$PREFIX/lib/python2.4/config/ accurate?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From esj at harvee.org  Fri Sep 29 23:12:03 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Fri, 29 Sep 2006 23:12:03 -0400
Subject: another distutils question
In-Reply-To: <efkk1i$aa1$1@sea.gmane.org>
References: <mailman.966.1159552468.10491.python-list@python.org>	<pan.2006.09.29.23.24.21.541676@keithperkins.net>	<mailman.985.1159574264.10491.python-list@python.org>	<pan.2006.09.30.01.38.39.530505@keithperkins.net>
	<efkk1i$aa1$1@sea.gmane.org>
Message-ID: <451DE083.8010705@harvee.org>

Robert Kern wrote:

> Instead, include the default data inside the package (read-only to non-root 
> users). Then allow the script itself to create the directory the first time it 
> is run (read-write, and it should then automatically be accessible to the user 
> that ran the script). You might also add a command-line option to *only* install 
> that directory.

I would be okay with a package/data/... arrangement if and only if the 
data within that directory was read only and only changed when the 
package changed it.  System specific changes would be in a system copy 
of the configuration file and user specific changes would be a user copy.

If you create a configuration system which uses a union of all three 
configuration files, you eliminate unnecessary replication of 
configuration values, minimize changes necessary when the baseline 
configuration file changes, and  you also have the opportunity to 
control scope of configuration variables.  I.e. some that are only 
changed in the system config file.

I have an application dependent version of this I've been using for the 
past three years and, it's really nice.  It lets me mostly ignore the 
configuration files and focus on what I'm trying to solve.

--- eric



From tenax.raccoon at gmail.com  Wed Sep 13 12:00:34 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 13 Sep 2006 09:00:34 -0700
Subject: Running python from a usb drive
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
	<1158024872.905234.117100@m73g2000cwd.googlegroups.com>
	<1158026095.979937.206300@i42g2000cwa.googlegroups.com>
	<1158028522.981282.159760@m73g2000cwd.googlegroups.com>
	<1158063006.685269.66090@i3g2000cwc.googlegroups.com>
	<1cbgfbo86x0qs$.x3x3jblzihjx$.dlg@40tude.net>
	<1158086616.546128.214230@i42g2000cwa.googlegroups.com>
Message-ID: <1158163234.918807.236420@e63g2000cwd.googlegroups.com>

cjl wrote:
> Thorsten:
>
> Thank you for your reply.
>
> > Setting environment variables has only effect on the process itself
> > and the subprocesses. This has nothing to do with Windows, it's the
> > same with Linux.
>
> True, and the changes to path and pythonpath are gone after I close the
> console window, but the results of the assoc and ftype commands are
> changes to the registry that linger. If I run my setup on a computer
> that has python installed, I will overwrite the pre-existing registry
> settings. I can restore them with a script, but I can't guarantee that
> my restore script will run.
>
> I'm still looking for a way to modify these temporarily, but it looks
> like I might be "up the creek" on this one. Oh well.
>
> Thanks again,
> CJL

I notice that you've already got the environmental variables set up to
run your Temp-Python.  You can retrieve the current associations (if
any) by using the assoc and ftype commands:

C:\>assoc .py
.py=Python.File

C:\>ftype Python.File
Python.File="C:\Python24\python.exe" "%1" %*

C:\>assoc .NotAnExtension
File association not found for extension .NotAnExtension

C:\>

Using this information, you could write a little python script with
your distribution which records the current file associations and
settings.  Then, when you're ready to revert, you run another little
python script which restores the associations.

These associations are also stored in the registry.  You could back up
the registry keys which you know will be modified, make the registry
changes yourself, and restore the registry settings at finish.  It
would require Python's win32 extension modules, though.

I don't know how you could do it without using a
backup/run-stuff/restore sequence.

    --Jason



From http  Sat Sep 30 04:57:24 2006
From: http (Paul Rubin)
Date: 30 Sep 2006 01:57:24 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
	<7xk63l7p67.fsf@ruckus.brouhaha.com>
	<eflarf$nbe$01$1@news.t-online.com>
Message-ID: <7xk63l3f63.fsf@ruckus.brouhaha.com>

Peter Otten <__peter__ at web.de> writes:
> >      all_heights = (block.height for block in stack if block.is_marked())
> >      if is_empty(all_heights):
> >         raise SomeError("No marked block")
> 
> Such a function would have to rebind the generator:

Yeah, that's what I mean about generators not working the right way.

> You can make it work, but the result tends to be messy:

I think it's better underneath, but still syntactically ugly, to just
defer the generator creation:

     all_heights = lambda: 
                     (block.height for block in stack if block.is_marked())
     if is_empty(all_heights ()):
         raise SomeError("No marked block")
     height = sum(all_heights ())

Now sum and is_empty see two separate generators, so is_empty is
straightforward:

     def is_empty(gen):
        try:
           gen.next()
           return True
        except StopIteration:
           return False


From tim.golden at viacom-outdoor.co.uk  Fri Sep  8 13:38:49 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: 8 Sep 2006 10:38:49 -0700
Subject: Accessing Add/Remove Programs Details
In-Reply-To: <1157734331.641656.155120@m79g2000cwm.googlegroups.com>
References: <mailman.113.1157621571.5279.python-list@python.org>
	<1157734331.641656.155120@m79g2000cwm.googlegroups.com>
Message-ID: <1157737129.669036.295180@i42g2000cwa.googlegroups.com>

Phoe6 wrote:
> Tim Golden wrote:
> > [Phoe6]
> > and perhaps you need something like
> > this (altho' obviously more sophisticated):
> > <code>
> > import wmi
> >
> > appname = "Python 2.4.3"
> > c = wmi.WMI ()
> > for product in c.Win32_Product (Caption=appname):
> >   print product.Caption
> >   # product.Uninstall ()
> >
> > </code>
>
> Thanks Tim for the reply. I started looking along the same lines.
> It looks like, I need to give the Product details exactly as it is
> registered(?).
> Trying out stuff like:

[... snip ...]

> did not work

> There is script example given the M$ site:
> <example_snippet>
> strComputer = "."
> Set objWMIService = GetObject("winmgmts:" _
>     & "{impersonationLevel=impersonate}!\\" _
>     & strComputer & "\root\cimv2")

That's exactly equivalent to:

c = wmi.WMI ()

> Set colSoftware = objWMIService.ExecQuery _
>     ("Select * from Win32_Product " _
>         & "Where Name = 'Personnel database'")
> For Each objSoftware in colSoftware
>     objSoftware.Uninstall()
> Next

That's the same as:

for product in c.Win32_Product (Name="Personnel database"):
  product.Uninstall ()

(all the module is doing is wrapping the MS code a bit
more pythonically).

TJG



From deets at nospam.web.de  Sat Sep  2 14:30:44 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 02 Sep 2006 20:30:44 +0200
Subject: Find the best price on gas in your local area for FREE....
In-Reply-To: <slrnefjigd.lls.sybrenUSE@schuimige.stuvel.eu>
References: <1157215122.268733.62140@74g2000cwt.googlegroups.com>
	<slrnefjigd.lls.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <4lu0ukF3mf3lU1@uni-berlin.de>

Sybren Stuvel schrieb:
> highpayinghomejobs at yahoo.com enlightened us with:
>> Visit the web site below to see where you can buy the cheapest gas
>> in your local area.  Just punch in your zip code and all the work is
>> done for you.  No Cost!   Absolutely FREE info.
> 
> Ehm... maybe you'd like to get your head out of your arse and stop
> assuming that the USA is the entire world.

Wait, their national baseball league championship is called world 
series. So he was pretty safe to assume that the US _are_ the entire world.

SCNR & and no offense intended.

Diez


From sanzhiyan at gmail.com  Fri Sep 22 12:49:03 2006
From: sanzhiyan at gmail.com (Saizan)
Date: 22 Sep 2006 09:49:03 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <4nihfbFa61lsU1@individual.net>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
Message-ID: <1158943743.930685.106630@m73g2000cwd.googlegroups.com>

Thanks for pointing that out ( the "!" is a misstyped "|"), my classes
of discrete math have warped my mind with a mix of various non-C-style
operators notation, I never use bitwise operation and this is just a
bad day for thinking about things..
However I figured out one thing, Python's logic notation is readable
and complete but not  compact. (which is fine for programming, and
that's the aim, isn't it?)

Bjoern Schliessmann wrote:
> Saizan wrote:
>
> > (However (not x) whould be as annoying as 1-x even if a little
> > more readable (if you consider lispish parentheses readable):
> > Input expression: (not (not x)&(not y)!(not (z|v)))
>
> Did you notice that you use bitwise AND and OR here? How about
>
> not (not x) and (not y) or (not (z or v))
>
> (or what is "!" supposed to mean?)
>
> BTW, not's binding is stronger than and's (IIRC). So
>
> not (not x) and (not y)
>
> mutates to
>
> x and (not y)
>
> Regards,
>
>
> Bj?rn
>
> --
> BOFH excuse #392:
> 
> It's union rules. There's nothing we can do about it. Sorry.



From http  Thu Sep 28 17:40:00 2006
From: http (Paul Rubin)
Date: 28 Sep 2006 14:40:00 -0700
Subject: releasing memory to malloc
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
	<mailman.756.1159319311.10491.python-list@python.org>
	<1159319835.249502.65220@i3g2000cwc.googlegroups.com>
	<1159321405.372826.60130@k70g2000cwa.googlegroups.com>
	<1159322459.473038.233090@m7g2000cwm.googlegroups.com>
	<7xmz8mt5ub.fsf@ruckus.brouhaha.com>
	<TbXSg.22$NE6.17@newssvr11.news.prodigy.com>
Message-ID: <7xwt7n6573.fsf@ruckus.brouhaha.com>

Bryan Olson <fakeaddress at nowhere.org> writes:
> I think I see what you're doing, but fork() after step 1 will
> create a child process with the same memory allocated.
> 
> I think it would make more sense to do step 1 in a subprocess.
> Use the subprocess module or one of the older popen()s to create
> a process that builds the target object, pickles it and pipes
> it back to the main process, then exits.

Sorry, yes, that's what I meant.  I shouldn't have used the word fork
without further qualification, which specifically means the child
process has all the same data.  What's needed would traditionally have
been done by a fork followed by an exec, and popen would have done
something like that.  These days I think there's some more streamlined
ways to do it.


From oliver.andrich at gmail.com  Sun Sep 24 12:28:16 2006
From: oliver.andrich at gmail.com (Oliver Andrich)
Date: Sun, 24 Sep 2006 18:28:16 +0200
Subject: ctypes question about call by reference
In-Reply-To: <1hm6khm.1wdxlsif8cyfN%rhymes@myself.com>
References: <mailman.535.1159113152.10491.python-list@python.org>
	<1hm6khm.1wdxlsif8cyfN%rhymes@myself.com>
Message-ID: <6f7b52d0609240928v13738e55oabe67c9d5b58d671@mail.gmail.com>

On 9/24/06, Lawrence Oluyede <rhymes at myself.com> wrote:
> Oliver Andrich <oliver.andrich at gmail.com> wrote:
> > - ExceptionType is an enum
> > - MagickWand is somewhat strange, but so far it works fine without any
> > type mangling.
> >
> > How would I wrap this thing using ctypes? Can anybody help me with that?
>
> First thing first: you have to identify how ExceptionType and MagickWand
> are composed of. Then you can start wrapping them following the
> instructions in the tutorial:
> http://docs.python.org/lib/ctypes-ctypes-tutorial.html

Well, what I learned so far from the documentation, which I already
have read more then once today, is that there is no example for an
enum in this situation. But looking at pygame-sdl and another project,
it looks like the enum is just an c_int or c_long.

And concerning MagickWand, I think I have learned, that I don't need
to define the structure, if I don't want to access it. And I don't
want to, cause this is handled by the library itself. Another point in
this context is also, that it is not defined in the header files
distributed with the library, but only in the source from which the
library is built. As the file is named magick-wand-private.h it is
also not meant to be edited.

Is it at all possbile to use a struct without defining it with ctypes?
Is it okay, to just use the int which is returned by default? Most of
my library works with that configuration, so I thought it is working.

Based on this, can you give me some more hints?

Best regards,
Oliver


-- 
Oliver Andrich <oliver.andrich at gmail.com> --- http://roughbook.de/


From sjmachin at lexicon.net  Tue Sep 12 06:43:42 2006
From: sjmachin at lexicon.net (John Machin)
Date: 12 Sep 2006 03:43:42 -0700
Subject: deprecated python 2.5
References: <mailman.328.1158056660.5279.python-list@python.org>
Message-ID: <1158057822.386424.114540@b28g2000cwb.googlegroups.com>

bussiere maillist wrote:
> DeprecationWarning: struct integer overflow masking is deprecated
>   return struct.pack('>H', ~value)
>  i didn't understand if someone have some explanation
> and what uses instead.

Which 2.5 are you using? Mine (2.5c1, win32) gives me *TWO* messages,
the second of which hints at the obvious remedy:

| DOS prompt>\python25\python
| Python 2.5c1 (r25c1:51305, Aug 17 2006, 10:41:11) [MSC v.1310 32 bit
(Intel)] on
|  win32
| Type "help", "copyright", "credits" or "license" for more
information.
| >>> import struct
| >>> struct.pack('>H', 1)
| '\x00\x01'
| >>> struct.pack('>H', ~1)
| __main__:1: DeprecationWarning: struct integer overflow masking is
deprecated
| __main__:1: DeprecationWarning: 'H' format requires 0 <= number <=
65535
| '\xff\xfe'
| >>> ^Z
|
| DOS prompt>\python25\python
| Python 2.5c1 (r25c1:51305, Aug 17 2006, 10:41:11) [MSC v.1310 32 bit
(Intel)] on
|  win32
| Type "help", "copyright", "credits" or "license" for more
information.
| >>> import struct
| >>> struct.pack('>H', (~1) & 0xffff)
| '\xff\xfe'
| >>>

HTH,
John



From awalter1 at cegetel.net  Mon Sep 11 08:25:48 2006
From: awalter1 at cegetel.net (awalter1)
Date: 11 Sep 2006 05:25:48 -0700
Subject: get the en of a program running in background
In-Reply-To: <1157924568.562057.317380@e3g2000cwe.googlegroups.com>
References: <1157914297.231229.212970@b28g2000cwb.googlegroups.com>
	<1157924568.562057.317380@e3g2000cwe.googlegroups.com>
Message-ID: <1157977548.323143.57380@e3g2000cwe.googlegroups.com>

Hi,

It works when a click on a button launches a program P.
Now, I want that a click on another button launches another program P'

In this case there is only one signal for two events : the end of P and
the end of P'.
How can distinct the two cases.

In addition, what is the use of the frame parameter of the logsignal
procedure ?
It seems to be a little bit complicated to manipulate it.

Thank for your help


oripel a ?crit :

> Module 'subprocess' may be a better fit for you than fork+exec.
> Here's an example with a signal handler
> (1) use subprocess, don't fork and exec
> (2) maybe this will help:
>
> ---
> import signal, subprocess
>
> # define the signal handler
> def logsignal(signum, frame):
>    print "Caught signal"
>
> # register the signal handler for SIGCHLD
> signal.signal(signal.SIGCHLD, logsignal)
>
> # run the subprocess in the background
> subprocess.Popen(["sleep", "3"])
>
> # Do more stuff
> ---
>
> The signal handler will be called when the child process ends. Just
> register your own handler.
>
> You only need to register the handler once.
> If you need this for a single run only, or need different behavior for
> different subprocesses, have your signal handler re-register the old
> handler (see the docs for module 'signal').
>
> A note about the example: if you run it as is, the parent process will
> end before the child process does. Add a call to 'os.wait()' to have it
> wait for the child. In your GUI you probably won't want it.
>
> Hope this helps.
>
> awalter1 wrote:
> > Hi,
> > I develop a graphical user interface (with pyGTK) where a click on a
> > button shall launch a program P in background. I want to get the end of
> > this program P but I don't want that my HMI be freezed while P is
> > running.
> > I try to use fork examplesI found on the web, but it seems to not run
> > as expected.
> > I am not familiar with these techniques in unix as well as python.
> > But I suppose that my needs are usual, despite that I don't find
> > anything on the web ...
> > Is someone can give me a standard way to call a background program,
> > wait its end, with an IHM still active ?
> > 
> > Thank a lot for any idea.



From fredrik at pythonware.com  Tue Sep 26 11:40:47 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 17:40:47 +0200
Subject: ultra newbie question (don't laugh)
In-Reply-To: <TjaSg.26$1n3.125@news.tufts.edu>
References: <TjaSg.26$1n3.125@news.tufts.edu>
Message-ID: <efbhlv$dhc$1@sea.gmane.org>

John Salerno wrote:

> So you see, what I'm asking for is very basic help, sort of along the 
> lines of "what things do I need to consider before I even begin this?" 
> Is OOP necessary here? Would utility functions work just as well for 
> simply writing the information to a file?

when you get programmers block, telling your brain to "shut up and let 
me write some code" is often a good idea.  just start tinkering with 
your first idea, and see if you can make it work.  if you get a little 
stuck, hack your way through it.  if you get really stuck, take a break, 
work on something else for a while, and wait for your brain to come up 
with a better idea.  repeat.

here's how I would start:

import xml.etree.ElementTree as ET

class Researcher:

     # attributes (you can skip this part, if you want)
     first_name = None
     last_name = None
     birth_country = None
     birth_state = None
     birth_city = None

     # the identity is lazily evaluated by getid (see below)
     id = None

     def getid(self):
	if not self.id:
	    self.id = (self.first_name + self.last_name).lower() # etc
	return self.id

     def maketree(self):
	elem = ET.Element("researcher", id=self.getid())
	ET.SubElement(elem, "first_name").text = self.first_name
	ET.SubElement(elem, "last_name").text = self.last_name
	ET.SubElement(elem, "birth_country").text = self.birth_country
	ET.SubElement(elem, "birth_state").text = self.birth_state
	ET.SubElement(elem, "birth_city").text = self.birth_city
	return elem

x = Researcher()

# simulate the UI's "OK" handler

x.first_name = "John"
x.last_name = "Salerno"
x.birth_country = "United States"
x.birth_state = "Texas"
x.birth_city = "Houston"

print ET.tostring(x.maketree())

</F>



From martin at v.loewis.de  Fri Sep 22 00:18:08 2006
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 22 Sep 2006 06:18:08 +0200
Subject: distutils on Windows with VC++ 8
In-Reply-To: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
References: <odm6h2pit02ptuuh9knuji9udlplmics3a@4ax.com>
Message-ID: <45136400.5030600@v.loewis.de>

wandabq at gmail.com schrieb:
> I'm trying to install two different packages which wrap C or C++ code
> and which make use of distutils.build_ext, which barfs because my only
> compiler is too new.  Trying this both on Python 2.4.3 and 2.5.
> Evidently there is a requirement that the compiler used to build the
> C/C++ in the installation must be the same as was used to build
> Python?  Am I understanding that correctly?  

Yes.

> What's the workaround?

There are several work-arounds, but they all come down to
"get a copy of the one of the supported compilers". The options
are:
- get a copy of VS 2003 on Ebay
- use cygwin/mingw (should work for C, might not work for
  C++ if you use MFC or some other MS-compiled library)
- find the VS 2003 Toolkit; Microsoft took it off the net,
  but Google may still be able to help

Regards,
Martin


From davelist at mac.com  Wed Sep  6 11:58:35 2006
From: davelist at mac.com (davelist at mac.com)
Date: Wed, 06 Sep 2006 11:58:35 -0400
Subject: Read from .glade
In-Reply-To: <1157553130.085947.313310@d34g2000cwd.googlegroups.com>
References: <1157553130.085947.313310@d34g2000cwd.googlegroups.com>
Message-ID: <7775373.1157558315836.JavaMail.davelist@mac.com>

 
On Wednesday, September 06, 2006, at 10:36AM, <ralfbrand50 at gmail.com> wrote:

>Hello,
>
>I've got the following problem: I've got a Userinterface that is made
>in Glade, so i've got a
>.glade file. What I want is to get the id's of every widget from the
>class GtkEntry from a given window.
>
>The glade file is like
>
><?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
><!DOCTYPE glade-interface SYSTEM
>"http://glade.gnome.org/glade-2.0.dtd">
>
><glade-interface>
>
><widget class="GtkWindow" id="TEVOinvoeren">

<snip rest of glade xml file>

>Kind regards,
>
>Ralf Brand
>


You want to use one of the XML processing libraries. The simplest (and should be fine for this use) is dom.

Here is some code I wrote as part of GladeGen - see http://www.linuxjournal.com/article/7421
that you should be able to easily extract the piece you need:

        doc = xml.dom.minidom.parse(self.glade_file)

        # look for widgets and get their widget type and name
        for node in doc.getElementsByTagName('widget'):
            widget = str(node.getAttribute('class'))
            name = str(node.getAttribute('id'))
            if self.top_window is None and widget == 'GtkWindow':
                self.top_window = name

            # if the widget type is in list of widgets user specified
            # in config file, include it in the list
            
            if widget in GladeGenConfig.include_widget_types:
                # (widget type, name)
                # ('GtkWindow', 'window1')
                self.widgets.append((widget, name))


HTH,
Dave



From fredrik at pythonware.com  Fri Sep 29 12:25:58 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 29 Sep 2006 18:25:58 +0200
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159546522.251704.301530@b28g2000cwb.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>	<451CD389.3010800@jessikat.plus.net>	<mailman.932.1159533269.10491.python-list@python.org>	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>	<mailman.948.1159542291.10491.python-list@python.org>	<1159545255.339364.299020@k70g2000cwa.googlegroups.com>	<mailman.955.1159545644.10491.python-list@python.org>
	<1159546522.251704.301530@b28g2000cwb.googlegroups.com>
Message-ID: <efjhek$3k1$1@sea.gmane.org>

Larry Hastings wrote:
>

> At the exact moment that the loop is done, it's a
> PyStringConcatenationObject * which points to a deep one-sided tree of
> more PyStringConcatenationObject * objects.  Its ob_sval is NULL, which
> means that the first time someone asks for its value (via the macro
> PyString_AS_STRING()) it will be computed.  When it's computed, the
> interpreter will allocate a buffer of 10000001 bytes and walk the tree,
> filling the buffer with ten million 'a's followed by a zero.  It'll
> then dereference all its children.

so what does the benchmark look like if you actually do this ?

</F>



From tony.bedford at gmail.com  Tue Sep 19 13:07:43 2006
From: tony.bedford at gmail.com (codefire)
Date: 19 Sep 2006 10:07:43 -0700
Subject: Curious issue with simple code
Message-ID: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>

Hi,

I have some simple code - which works...kind of..here's the code:

[code]
import os

def print_tree(start_dir):
    for f in os.listdir(start_dir):
        fp = os.path.join(start_dir, f)
        print fp
        if os.path.isfile(fp): # will return false if use f here!
            if os.path.splitext(fp)[1] == '.html':
                print 'html file found!'
        if os.path.isdir(fp):
            print_tree(fp)

print os.path
print_tree(r'c:\intent\docn')
[/code]

As above it all works as expected. However, on the marked line, if I
use f instead of fp then that condition returns false! Surely,
isfile(f) should return true, even if I just give a filename, rather
than the full path? 

If anyway can explain this I'd be grateful,

Tony



From waylan at gmail.com  Wed Sep 13 15:47:18 2006
From: waylan at gmail.com (waylan)
Date: 13 Sep 2006 12:47:18 -0700
Subject: page contents are not refreshed
References: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
	<1158174404.950910.260050@b28g2000cwb.googlegroups.com>
	<mailman.49.1158174948.10491.python-list@python.org>
Message-ID: <1158176838.477806.212030@m73g2000cwd.googlegroups.com>

Steve Holden wrote:
> waylan wrote:
[snip]
> >
> >>from mod_python import apache
> >>from time import strftime, gmtime
> >>
> >
> > def curtime():
> >     return strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
> >
> >
> >>def handler(req):
> >>     req.content_type = "text/plain"
> >>     req.send_http_header()
> >>     req.write(str(curtime()))
> >>     return apache.OK
> >
> >
> This is a very long way round for a shortcut (though it does have the
> merit of working). Why not just
>
> def handler(req):
>       req.content_type = "text/plain"
>       req.send_http_header()
>       curtime = strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
>       req.write(str(curtime))
>       return apache.OK
>
> Or even
>
> def handler(req):
>       req.content_type = "text/plain"
>       req.send_http_header()
>       req.write(strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime()))
>       return apache.OK
>

While Steve's examples certainly do the trick in this limited case, I
assumed that the original poster was just starting with mod_python and
I was simply trying to explain the bigger picture for future reference.
As one develops more sophisticated code, simply adding it to the
`handler` function becomes less desirable. Reacognizing that anything
that must be reevaluated on each request must be callable will be a
bigger help IMHO.

Steve's examples work because the current time is evaluated within
`handler` and :

>>> callable(handler)
True

While in the the original example:

>>> callable(curtime)
False

Yet in my example:

>>> callable(curtime)
True

Finally, by way of explaination:

>>> callable.__doc__
'callable(object) -> bool\n\nReturn whether the object is callable
(i.e., some kind of function).\nNote that classes are callable, as are
instances with a __call__() method.'



From __peter__ at web.de  Fri Sep  1 14:16:44 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 01 Sep 2006 20:16:44 +0200
Subject: disgrating a list
References: <1157132098.276480.291790@h48g2000cwc.googlegroups.com>
	<4lr9ssF39q4lU2@uni-berlin.de>
	<1157133689.234692.3680@p79g2000cwp.googlegroups.com>
Message-ID: <ed9tdb$mtc$00$1@news.t-online.com>

jwaixs wrote:

> 
> Diez B. Roggisch wrote:
>> Why do you wrap a in a list? Just
>>
>> c = a + [b]
>>
>> will do it.
> 
> Yes I know, but the problem is I don't know if 'a' is a list or not. I
> could make a type check, but I don't want to program in that way.

Somewhere in the call chain you have made the decision "I want this function
to accept both lists and scalars", but always passing in lists is probably
the better approach. If you want to go with your original idea -- googling
in c.l.py will turn up many more or less optimized variants of flatten()
that basically follow the same approach as yours. There is also
Tkinter._flatten() which you can use though it gives you a tuple, not a
list -- the place at least should meet the "obscurity" criterion :-)

Peter


From anthra.norell at vtxmail.ch  Sun Sep 24 04:50:07 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Sun, 24 Sep 2006 10:50:07 +0200
Subject: newbe's re question
In-Reply-To: <1159038932.050142.245830@i3g2000cwc.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>	<mailman.322.1158749465.10491.python-list@python.org>	<1158761636.305283.184800@h48g2000cwc.googlegroups.com>	<mailman.341.1158774359.10491.python-list@python.org>	<1158796645.943655.180890@i3g2000cwc.googlegroups.com>	<mailman.426.1158871980.10491.python-list@python.org>
	<1159038932.050142.245830@i3g2000cwc.googlegroups.com>
Message-ID: <451646BF.9050005@vtxmail.ch>

Eric_Dexter at msn.com wrote:
> These are csound files.  Csound recently added python as a scripting
> language and is allowing also allowing csound calls from outside of
> csound.  The nice thing about csound is that instead of worrying about
> virus and large files it is an interpiter and all the files look
> somewhat like html.  4,000 virus free instruments for $20 is available
> at
> http://www.csounds.com and the csound programming book is also
> available.  The downside is that csound is can be realy ugly looking
> (that is what I am trying to change) and it lets you write ugly looking
> song code that is almost unreadable at times (would look nice in a
> grid)
>
> http://www.msn.com
> ..
>
>
> Frederic Rentsch wrote:
>   
>> Eric_Dexter at msn.com wrote:
>>     
>>> Frederic Rentsch wrote:
>>>
>>>       
>>>> Eric_Dexter at msn.com wrote:
>>>>
>>>>         
>>>>> Frederic Rentsch wrote:
>>>>>
>>>>>
>>>>>           
>>>>>> Eric_Dexter at msn.com wrote:
>>>>>>
>>>>>>
>>>>>>             
>>>>>>> All I am after realy is to change this
>>>>>>>
>>>>>>>  reline = re.line.split('instr', '/d$')
>>>>>>>
>>>>>>> into something that grabs any line with instr in it take all the
>>>>>>> numbers and then grab any comment that may or may not be at the end of
>>>>>>> the line starting with ; until the end of the line including white
>>>>>>> spaces..  this is a corrected version from
>>>>>>>
>>>>>>> http://python-forum.org/py/viewtopic.php?t=1703
>>>>>>>
>>>>>>> thanks in advance the hole routine is down below..
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> [code]
>>>>>>> def extractCsdInstrument (input_File_Name, output_File_Name,
>>>>>>> instr_number):
>>>>>>>
>>>>>>>     "takes an .csd input file and grabs instr_number instrument and
>>>>>>> creates output_File_Name"
>>>>>>>     f = open (input_File_Name , 'r')                #opens file passed
>>>>>>> in to read
>>>>>>>     f2 = open (output_File_Name, 'w')               #opens file passed
>>>>>>> in to write
>>>>>>>     instr_yes = 'false'                             #set flag to false
>>>>>>>
>>>>>>>     for line in f:                                  #for through all
>>>>>>> the lines
>>>>>>>       if "instr" in line:                           #look for instr in
>>>>>>> the file
>>>>>>>            if instr_yes == 'true':                    #check to see if
>>>>>>> this ends the instr block
>>>>>>>                break                                #exit the block
>>>>>>>
>>>>>>>            reline = re.line.split('instr', '/d$')     #error probily
>>>>>>> split instr and /d (decimal number into parts) $ for end of line
>>>>>>>            number = int(reline[1])                  #convert to a
>>>>>>> number maybe not important
>>>>>>>                 if number == instr_number:            #check to see if
>>>>>>> it is the instr passed to function
>>>>>>>                 instr_yes = "true":                 #change flag to
>>>>>>> true because this is the instr we want
>>>>>>>       if instr_yes = "true":                        #start of code to
>>>>>>> copy to another file
>>>>>>>            f2.write(f.line)                         #write line to
>>>>>>> output file
>>>>>>>
>>>>>>>     f.close                                         #close input file
>>>>>>>     f2.close
>>>>>>>
>>>>>>> [/code]
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>               
>>>>>> Eric,
>>>>>>       From your problem description and your code it is unclear what
>>>>>> exactly it is you want. The task appears to be rather simple, though,
>>>>>> and if you don't get much useful help I'd say it is because you don't
>>>>>> explain it very well.
>>>>>>       I believe we've been through this before and your input data is
>>>>>> like this
>>>>>>
>>>>>>    data = '''
>>>>>>    <CsoundSynthesizer>;
>>>>>>      ; test.csd - a Csound structured data file
>>>>>>
>>>>>>    <CsOptions>
>>>>>>      -W -d -o tone.wav
>>>>>>    </CsOptions>
>>>>>>
>>>>>>    <CsVersion>    ;optional section
>>>>>>      Before 4.10  ;these two statements check for
>>>>>>      After 4.08   ;   Csound version 4.09
>>>>>>    </CsVersion>
>>>>>>
>>>>>>    <CsInstruments>
>>>>>>      ; originally tone.orc
>>>>>>      sr = 44100
>>>>>>      kr = 4410
>>>>>>      ksmps = 10
>>>>>>      nchnls = 1
>>>>>>      instr   1
>>>>>>          a1 oscil p4, p5, 1 ; simple oscillator
>>>>>>             out a1
>>>>>>        endin
>>>>>>    </CsInstruments>
>>>>>>
>>>>>>    <CsScore>
>>>>>>      ; originally tone.sco
>>>>>>      f1 0 8192 10 1
>>>>>>      i1 0 1 20000 1000 ;play one second of one kHz tone
>>>>>>      e
>>>>>>    </CsScore>
>>>>>>
>>>>>>    </CsoundSynthesizer>
>>>>>>
>>>>>> Question 1: Is this your input?
>>>>>> if yes:
>>>>>>     Question 1.1: What do you want to extract from it? In what format?
>>>>>> if no:
>>>>>>     Question 1.1: What is your input?
>>>>>>     Question 1.2: What do you want to extract from it? In what format?
>>>>>> Question 2: Do you need to generate output file names from the data?
>>>>>> (One file per instrument?)
>>>>>> if yes:
>>>>>>    Question 2.1: What do you want to make your file name from?
>>>>>> (Instrument number?)
>>>>>>
>>>>>>
>>>>>> Regards
>>>>>>
>>>>>> Frederic
>>>>>>
>>>>>>
>>>>>>             
>>>>> I want to pass the file name to the subroutine and return a comment
>>>>> string if it is there maybe it should be simplier.  I probily should
>>>>> have the option of grabbing the comment in other related routines.  I
>>>>> am pretty ambitious with the main program.  I did notice some code in
>>>>> tcl that would be usefull to the app If I compile it..  I am probily
>>>>> not ready for that though..
>>>>>
>>>>> http://www.dexrow.com
>>>>>
>>>>>
>>>>>
>>>>>           
>>>> Eric,
>>>>      I'm beginning to enjoy this. I'm sure we'll sort this out in no
>>>> time if we proceed methodically. Imagine you are a teacher and I am your
>>>> student. This is a quiz. I have to take it and you need to explain to me
>>>> the problem you want me to solve. If you don't explain it clearly, I
>>>> will not know what I have to do and cannot do the quiz. If you answer my
>>>> questions above, your description of the problem will be clear and I can
>>>> take the quiz. Okay?
>>>>
>>>> Frederic
>>>>
>>>>         
>>> instr   1
>>>          a1 oscil p4, p5, 1 ; simple oscillator    ; comment is
>>> sometimes here
>>>             out a1
>>>        endin
>>>
>>>
>>> I need to know the file I wan't to grab this from I need to grab this
>>> out of the larger file and put it into it's own file,  I need to know
>>> what instr the user wants.  I need to know what file to put it into and
>>> it would be usefull to have the comment line returned (if any).
>>>
>>> I did just get python essential reference 3rd edition..  If there is a
>>> better reference on just the subject I am after I would be glad to grab
>>> it when I get cash again.
>>>
>>>
>>>       
>> Eric,
>>
>>    Tell us the story. Are you a student? A musician? What are you doing
>> with these files? Where do you get them from? What for?
>>
>> Frederic
>>     
>
>   
Eric,
      I found an excellent CSound doc at: 
ems.music.utexas.edu/program/mus329j/CSPrimer.pdf. I am myself 
interested in music and will definitely look into this more closely.
      For the time being I get the impression that you are dealing with 
CSound instrument definition files which you can buy cheaply in great 
quantity but unfortunately are illegibly formatted. If this is so, what 
you would need is a formatter. I found references to CSound editors 
(e.g. http://flavio.tordini.org/csound-editor/). Those should be capable 
of formatting.
      Writing your own formatter shouldn't be all that hard. Here's a 
quick try:


def csound_formatter (in_file, out_file_file = sys.stdout):

   INDENT      = 10
   CODE_LENGTH = 50

   for l in in_file:
      line = l.strip ()
      if line == '':
         out_file.write ('\n')
      else:
         if line [0] == ';':       # Comment line
            out_file.write ('%s\n' % line)
         else:
            code = comment = ''
            if line [-1] == ':':   # Label
               out_file.write ('%s\n' % line)
            else:
               if ';' in line:
                  code, comment = line.split (';')
                  out_file.write ('%*s%-*s;%s\n' % (INDENT, '', 
CODE_LENGTH, code, comment))
               else:
                  out_file.write ('%*s%s\n' % (INDENT, '', line))


And here is a section of a csound file with white space squeezed out as 
would make the file smaller:
 
 >>> csound = StringIO.StringIO ('''; Basic FM Instrument with Variable 
Vibrato
; p4=amp p5=pch(fund) p6=vibdel p7=vibrate p8=vibwth
; p9=rise p10=decay p11=max index p12=car fac p13=modfac
; p14=index rise p15=index decay p16=left channel factor p17=original p3

instr 9,10,11,12
;--------------------------------------------------------------------------------
;initialization block:
kpitch init cpspch (p5)
itempo = p3/p17 ;ratio seconds/beats
idelay = p6 * itempo ;convert beats to secs
irise = p9 * itempo
idecay = p10 * itempo
indxris = (p14 == 0 ? irise : p14 * itempo)
indxdec = (p15 == 0 ? idecay : p15 * itempo)
if (p16 != 0) igoto panning ;if a panfac, use it, else
ilfac = .707 ;default is mono (sqrt(.5))
irfac = .707
igoto perform
panning:
ilfac = sqrt(p16)
irfac = sqrt(1-p16)
;--------------------------------------------------------------------------------
;performance block:
perform:
if (p7 == 0 || p8 == 0) goto continue
kontrol oscil1 idelay,1,.5,2 ;vib control
kvib oscili p8*kontrol,p7*kontrol,1 ;vibrato unit
kpitch = cpsoct(octpch(p5)+kvib) ;varying fund pitch in hz
continue:
kamp linen p4,irise,p3,idecay
kindex linen p11,indxris,p3,indxdec
asig foscili kamp,kpitch,p12,p13,kindex,1 ;p12,p13=carfac,mod fac
outs asig*ilfac,asig*irfac
endin   
''')

Now we run this through the function defined above:

 >>> csound_formatter (s)

; Basic FM Instrument with Variable Vibrato
; p4=amp p5=pch(fund) p6=vibdel p7=vibrate p8=vibwth
; p9=rise p10=decay p11=max index p12=car fac p13=modfac
; p14=index rise p15=index decay p16=left channel factor p17=original p3

                    instr 9,10,11,12
;--------------------------------------------------------------------------------
;initialization block:
                    kpitch init cpspch (p5)
                    itempo = p3/p17                         ;ratio 
seconds/beats
                    idelay = p6 * itempo                    ;convert 
beats to secs
                    irise = p9 * itempo
                    idecay = p10 * itempo
                    indxris = (p14 == 0 ? irise : p14 * itempo)
                    indxdec = (p15 == 0 ? idecay : p15 * itempo)
                    if (p16 != 0) igoto panning             ;if a 
panfac, use it, else
                    ilfac = .707                            ;default is 
mono (sqrt(.5))
                    irfac = .707
                    igoto perform
panning:
                    ilfac = sqrt(p16)
                    irfac = sqrt(1-p16)
;--------------------------------------------------------------------------------
;performance block:
perform:
                    if (p7 == 0 || p8 == 0) goto continue
                    kontrol oscil1 idelay,1,.5,2            ;vib control
                    kvib oscili p8*kontrol,p7*kontrol,1     ;vibrato unit
                    kpitch = cpsoct(octpch(p5)+kvib)        ;varying 
fund pitch in hz
continue:
                    kamp linen p4,irise,p3,idecay
                    kindex linen p11,indxris,p3,indxdec
                    asig foscili kamp,kpitch,p12,p13,kindex,1 
;p12,p13=carfac,mod fac
                    outs asig*ilfac,asig*irfac
                    endin


It works on a couple of presumptions (e.g. no code following labels). So 
it may not function perfectly but shouldn't be hard to tweak.

Hope this helps

Frederic



From bignose+hates-spam at benfinney.id.au  Fri Sep 22 01:23:53 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 22 Sep 2006 15:23:53 +1000
Subject: Don't use regular expressions to "validate" email addresses
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au> <eevo5f$abu$1@sea.gmane.org>
Message-ID: <878xkczd7a.fsf@benfinney.id.au>

Steve Holden <steve at holdenweb.com> writes:

> Ben Finney wrote:
> > The best advice I've seen when people ask "How do I validate
> > whether an email address is valid?" was "Try sending mail to it".
> > 
> That only applies if it's a likely-looking email address. If someone
> asks me to send mail to "splurge.!#$%*&^from at thingie?><{}_)" I will
> probably assume that it isn't worth my time trying.

You, as a human, can possibly make that decision, if you don't care
about turning away someone who *does* have such an email address. How
can an algorithm do so? There are many valid email addresses that look
as bizarre as the example you gave.

> > The sending system's mail transport agent, not regular
> > expressions, determines which part is the domain to send the mail
> > to.
> > 
> > The domain name system, not regular expressions, determines what
> > domains are valid, and what host should receive mail for that
> > domain.
> > 
> > Most especially, the receiving mail system, not regular
> > expressions, determines what local-parts are valid.
> > 
> Nevertheless, I am *not* going to try delivery to (for example) a
> non-local address that doesn't contain an "at@ sign.

Would you try delivery to an email address that contains two or more
"@" symbols? If not, you will be denying delivery to valid RFC2821
addresses.

This is, of course, something you're entitled to do. But you've then
consciously chosen not to use "is the email address valid?" as your
criterion, and the original request for such validation becomes moot.

-- 
 \        "During my service in the United States Congress, I took the |
  `\                 initiative in creating the Internet."  -- Al Gore |
_o__)                                                                  |
Ben Finney



From shalofin at gmail.com  Fri Sep 29 06:01:26 2006
From: shalofin at gmail.com (paw)
Date: 29 Sep 2006 03:01:26 -0700
Subject: Problems with Python 2.5 installer.
References: <1159185801.416379.280870@m7g2000cwm.googlegroups.com>
	<1159223174.531918.302610@m7g2000cwm.googlegroups.com>
Message-ID: <1159524086.088796.75980@b28g2000cwb.googlegroups.com>


John Machin wrote:
> paw wrote:
> > I have ran the MSI installer for Python 2.5 several times attempting to
> > install to C:
> > Python, however all of the files are placed in C:\ .  The installer is
> > told to only install files for me, beyond that I have only chosen the
> > defaults.
>
> What do you mean by "install to C: <newline> Python"? Can you tell us
> (unambiguously, on one line) what directory you chose? Is there any
> good reason why you didn't take the default, which is
>     C:\Python25
> ?

The <newline> should have been \ , the keyboard I am using sucks and
places the backslash below Enter vs. above like I am used to.  I just
didn't catch that when posting.

I really don't know why I always change the directory, I've just always
installed Python on MS Windows into C:\Python.  No practical reason, I
do the same with other programs.

> > Google turned up nothing useful that I could find, is anyone else
> > seeing this problem?
>
> There's been no mention that I've noticed.

I'm thinking this is a local issue.  I came in today and used the same
MSI installer as before and there were no problems.

I'm looking through the local logs to see if there has been any change
on this system in the past day or two right now.

Wayne



From edreamleo at charter.net  Sun Sep  3 12:42:44 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Sun, 3 Sep 2006 11:42:44 -0500
Subject: regex matching rst code block?
References: <plCKg.1977$uv4.1386@newsfe02.lga>
	<slrnefltft.ana.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <rCDKg.1229$Ez.1186@newsfe06.lga>

> Why not convert the reStructuredText to XML and parse that?

Because the problem arises for the jEdit syntax colorer whose most powerful 
pattern matcher is a regex.

Edward
--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
-------------------------------------------------------------------- 




From nicogrubert at gmail.com  Fri Sep  1 02:48:45 2006
From: nicogrubert at gmail.com (Nico Grubert)
Date: Fri, 01 Sep 2006 08:48:45 +0200
Subject: Searching a string and extract all occurancies of a	substring
In-Reply-To: <mailman.36755.1157046189.27774.python-list@python.org>
References: <mailman.36755.1157046189.27774.python-list@python.org>
Message-ID: <44F7D7CD.8090005@gmail.com>


> is this XML, or just something that looks a little like XML ?

Unfortunately, something that looks a little XML so I can't use a XML 
parser. But the HTML parser does the job.


From benjamin.grant at duke.edu  Fri Sep  8 21:01:24 2006
From: benjamin.grant at duke.edu (benjamin.grant at duke.edu)
Date: Fri,  8 Sep 2006 21:01:24 -0400
Subject: python readline error - please help - need it for scanner!
Message-ID: <20060908210124.mys07r7c0k0o80k8@webmail.duke.edu>

can configure, make and install
everything fine.  I'm using python 2.4  I have ubuntu dapper drake. I am
trying to install hplip which requires python.  When I do this, this
also works but while running the following error occurs:
Traceback (most recent call last):
  File "/usr/local/bin/hp-setup", line 31, in ?
    import readline, gzip
ImportError: No module named readline



It appears as though for some reaosn the readline module is not being
installed on my system.  Also, it doesn't really seem like python could
possibly be being installed correctly.  If I go to python tools and try
to run ./listmodules I get the following error:


[Hide Quoted Text]
> File "/usr/lib/python2.4/doc/tools/listmodules", line 183, in ?
>     main()
>   File "/usr/lib/python2.4/doc/tools/listmodules", line 119, in main
>     os.chdir("Modules")
> OSError: [Errno 2] No such file or directory: 'Modules'
>
>



From sjmachin at lexicon.net  Sat Sep 16 17:03:58 2006
From: sjmachin at lexicon.net (John Machin)
Date: 16 Sep 2006 14:03:58 -0700
Subject: Unicode / cx_Oracle problem
References: <r0q3g21npo8ogiml74lruuj65icuqah4ca@4ax.com>
	<4mfgcgF60ounU1@uni-berlin.de>
	<rh07g2h00pv9fif2n04o77o153u9m8vi8l@4ax.com>
	<4mi503F63uluU1@uni-berlin.de>
	<8ce8g29hsh0qefore6psbbrmifiai1vt34@4ax.com>
	<1157927237.576170.84270@p79g2000cwp.googlegroups.com>
	<2kgog29das5up4k8p38kr27co4mb0c4k1i@4ax.com>
Message-ID: <1158440638.681326.287870@e3g2000cwe.googlegroups.com>

Richard Schulman wrote:
> On 10 Sep 2006 15:27:17 -0700, "John Machin" <sjmachin at lexicon.net>
> wrote:
>
> >...
> >Encode each Unicode text field in UTF-8. Write the file as a CSV file
> >using Python's csv module. Read the CSV file using the same module.
> >Decode the text fields from UTF-8.
> >
> >You need to parse the incoming line into column values (the csv module
> >does this for you) and then convert each column value from
> >string/Unicode to a Python type that is compatible with the Oracle type
> >for that column.
> >...
>
> John, how am I to reconcile your suggestions above with my
> ActivePython 2.4 documentation, which states:
>
> <<12.20 csv -- CSV File Reading and Writing
> <<New in version 2.3.
> ...
> <<Note: This version of the csv module doesn't support Unicode input.
> Also, there are currently some issues regarding ASCII NUL characters.
> Accordingly, all input should generally be printable ASCII to be safe.
> These restrictions will be removed in the future.>>
>

1. For "Unicode" read  "UTF-16".

2.  Unless you have \u0000 in your Unicode data, encoding it into UTF-8
won't cause any ASCII NUL bytes to appear. Ensuring that you don't have
NULs in your data is a good idea in general.

3. There are also evidently some issues regarding ASCII LF characters
embedded in fields (like when Excel users do Alt-Enter (Windows
version) to put a hard line break in their headings); see
http://docs.python.org/dev/whatsnew/modules.html of which the following
is an extract:
"""
The CSV parser is now stricter about multi-line quoted fields.
Previously, if a line ended within a quoted field without a terminating
newline character, a newline would be inserted into the returned field.
This behavior caused problems when reading files that contained
carriage return characters within fields, so the code was changed to
return the field without inserting newlines. As a consequence, if
newlines embedded within fields are important, the input should be
split into lines in a manner that preserves the newline characters.
"""

4. Provided your fields don't contain any of  CR, LF, ctrl-Z (maybe),
and NUL, you should be OK. I can't understand the sentence
"Accordingly, all input should generally be printable ASCII to be
safe." -- especially the "accordingly". If it was running amok with
8-bit characters with ord(c) >= 128, there would have been loud shrieks
from several corners of the globe.

5. However, to be safe, you could go the next step and convert the
UTF-8 to base64  -- see
http://docs.python.org/dev/lib/module-base64.html -- BUT once you've
done that your encoded data doesn't even have commas and quotes in it,
so you can avoid the maybe unsafe csv module and just write your data
as ",".join(base64_encoded_fields).

HTH,
John



HTH,
John



From ldo at geek-central.gen.new_zealand  Tue Sep 26 04:53:55 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 20:53:55 +1200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>	<efaj9p$fqq$2@lust.ihug.co.nz>
	<efakif$idf$1@lust.ihug.co.nz>
	<mailman.644.1159256238.10491.python-list@python.org>
Message-ID: <efapp8$rfd$3@lust.ihug.co.nz>

In message <mailman.644.1159256238.10491.python-list at python.org>, Fredrik
Lundh wrote:

> Lawrence D'Oliveiro wrote:
> 
>  > Kind of defeats the point of having SQL, but there you go...
> 
> there are plenty of reasons to use Python data structures instead of the
> SQL engine for data crunching.  especially if you care about efficiency.

I think you have something else in mind when you say "efficiency", from what
I'm thinking of.

SQL databases like MySQL are _designed_ for efficiency.


From chris at simplistix.co.uk  Mon Sep 11 17:39:14 2006
From: chris at simplistix.co.uk (Chris Withers)
Date: Mon, 11 Sep 2006 22:39:14 +0100
Subject: Problems with email.Generator.Generator
In-Reply-To: <4505CAA1.9090102@simplistix.co.uk>
References: <mailman.239.1157955783.5279.python-list@python.org>	<ee3odb$ck9$00$1@news.t-online.com>	<45058250.9040102@simplistix.co.uk>	<ee40io$hno$1@sea.gmane.org>	<mailman.281.1158000940.5279.python-list@python.org>	<ee4cam$g9a$03$1@news.t-online.com>
	<4505CAA1.9090102@simplistix.co.uk>
Message-ID: <4505D782.3010105@simplistix.co.uk>

Chris Withers wrote:
> ...except it gets the transfer encoding wrong, which means Thunderbird 
> shows =A3 instead of the pound sign that it should :-(
> 
> ...this is down to a pretty lame bit of code in Encoders.py which 
> basically checks for a unicode error *sigh*

OK, slight progress... here a new version that actually works:

from email.Charset import Charset,QP
from email.MIMEText import MIMEText
charset = Charset('utf-8')
charset.body_encoding = QP
msg = MIMEText('','plain',None)
msg.set_payload(u'Some text with chars that need encoding:\xa3',charset)
print msg.as_string()

MIME-Version: 1.0
Content-Type: text/plain; charset; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

Some text with chars that need encoding:=A3

Okay, so this actually does the right thing... wahey!

...but hold your horses, if Charset isn't set to quoted printable, then 
you end up with problems:

charset = Charset('utf-8')
msg = MIMEText('','plain',None)
msg.set_payload(u'Some text with chars that need encoding:\xa3',charset)

Traceback (most recent call last):
   File "C:\test_encoding.py", line 5, in ?
     msg.set_payload(u'Some text with chars that need 
encoding:\xa3',charset)
   File "c:\python24\lib\email\Message.py", line 218, in set_payload
     self.set_charset(charset)
   File "c:\python24\lib\email\Message.py", line 260, in set_charset
     self._payload = charset.body_encode(self._payload)
   File "c:\python24\lib\email\Charset.py", line 366, in body_encode
     return email.base64MIME.body_encode(s)
   File "c:\python24\lib\email\base64MIME.py", line 136, in encode
     enc = b2a_base64(s[i:i + max_unencoded])
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in 
position 40: ordinal not in range(128)

Now what?

*sigh*

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From aahz at pythoncraft.com  Thu Sep  7 12:25:23 2006
From: aahz at pythoncraft.com (Aahz)
Date: 7 Sep 2006 09:25:23 -0700
Subject: [ANN] IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
Message-ID: <edph5j$nlr$1@panix3.panix.com>

In article <mailman.38.1157488049.5279.python-list at python.org>,
Jim Hugunin  <Jim.Hugunin at microsoft.com> wrote:
>
>I'm extremely happy to announce that we have released IronPython 1.0 today!
> http://www.codeplex.com/IronPython

Congrats!
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

I support the RKAB


From luuk at invalid.lan  Mon Sep 11 07:31:45 2006
From: luuk at invalid.lan (Luuk)
Date: Mon, 11 Sep 2006 13:31:45 +0200
Subject: efficient text file search.
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
Message-ID: <45054921$0$4526$e4fe514c@news.xs4all.nl>


"noro" <amit.man at gmail.com> schreef in bericht 
news:1157973527.817462.207420 at h48g2000cwc.googlegroups.com...
> Is there a more efficient method to find a string in a text file then:
>
> f=file('somefile')
> for line in f:
>    if 'string' in line:
>         print 'FOUND'
>


yes, more efficient would be:
grep (http://www.gnu.org/software/grep/)





From hardcoded.software at gmail.com  Wed Sep 20 19:45:50 2006
From: hardcoded.software at gmail.com (Virgil Dupras)
Date: 20 Sep 2006 16:45:50 -0700
Subject: byte count unicode string
References: <mailman.315.1158736972.10491.python-list@python.org>
	<1158737974.490027.71860@k70g2000cwa.googlegroups.com>
	<1158739949.355384.178660@e3g2000cwe.googlegroups.com>
	<Xns9844612827EEAduncanbooth@127.0.0.1>
	<7xzmcv2ake.fsf@ruckus.brouhaha.com>
	<1158743395.548514.106420@b28g2000cwb.googlegroups.com>
Message-ID: <1158795949.870568.121150@i3g2000cwc.googlegroups.com>


MonkeeSage wrote:
> OK, so the devil always loses. ;P
>
> Regards,
> Jordan

Huh? The devil always loses? *turns TV on, watches the news, turns TV
off* Nope, buddy. Quite the contrary.



From exarkun at divmod.com  Tue Sep 26 09:49:11 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 26 Sep 2006 09:49:11 -0400
Subject: threading, subprocesses and wait
In-Reply-To: <1159277357.156624.115740@b28g2000cwb.googlegroups.com>
Message-ID: <20060926134911.1717.695756261.divmod.quotient.60676@ohm>

On 26 Sep 2006 06:29:17 -0700, Gal Diskin <gal.diskin at gmail.com> wrote:
>Hi all,
>I'm writing a python program using threads to open several subprocesses
>concurrently (using module subprocess) and wait on them. I was
>wondering if there is a possibilty that a thread will return from wait
>even though the subprocess that finished was created by another thread
>thats also waiting.
>
>i.e. - 2 threads, each thread opens a subprocess and waits. The
>subprocess created by thread 1 has ended and thread 2 is released from
>wait instead of thread 1. Is this scenario possible? (I have reason to
>believe this has happend to me, but it seems unreasonable behaviour)

>From a superficial reading of the code, it looks like this should not
happen.  The wait call uses waitpid(2) which will only return when the
specified pid has terminated.

On the other hand, it performs no error handling at all, so if the SIGCHLD
for thread 1's process is delivered to thread 2, it may cause the wait call
to fail with an EINTR OSError.  Whether this is actually possible or not
depends on what signal handlers, if any, have been installed, as well as the
underlying C and threading libraries, though.

Jean-Paul


From slianoglou at gmail.com  Fri Sep 15 01:35:23 2006
From: slianoglou at gmail.com (Steve Lianoglou)
Date: 14 Sep 2006 22:35:23 -0700
Subject: matplotlib
In-Reply-To: <1158287584.727929.148040@i3g2000cwc.googlegroups.com>
References: <1158282047.089110.284140@h48g2000cwc.googlegroups.com>
	<20060915015210.7B5F.0.NOFFLE@fiedzia.homeip.net>
	<1158287584.727929.148040@i3g2000cwc.googlegroups.com>
Message-ID: <1158298523.875232.280360@e3g2000cwe.googlegroups.com>


> This site and webpage in particular doesn't open. I tried that too
> before posting my question.

The page (http://matplotlib.sourceforge.net/tutorial.html) may not be
up now, but will most certainly be etched in Google's mind for some
time to come, via Google Cache:

http://64.233.161.104/search?q=cache:w1ZcsnHEX3gJ:matplotlib.sourceforge.net/tutorial.html+http://matplotlib.sourceforge.net/tutorial.html&hl=en&gl=us&ct=clnk&cd=1

Or, if you have some real gumption, you can check out matplotlib from
SVN, the tutorial is in the htdocs folder
(htdocs/tutorial.html.template) and rebuild the entire site (which is
most likely overkill .. but hey, who can say).

SVN checkout instructions are here:

http://sourceforge.net/svn/?group_id=80706

HTH,

-steve



From mensanator at aol.com  Tue Sep 12 13:24:00 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 10:24:00 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
Message-ID: <1158081840.659296.286340@b28g2000cwb.googlegroups.com>


Mike Owens wrote:
> On 11 Sep 2006 23:29:28 -0700, mensanator at aol.com <mensanator at aol.com> wrote:
>
> > But it was stated in the sqlite docs that ALL SQL databases
> > use static types implying that sqlite will be incompatible
> > with any "heavy" database should the need arise to migrate
> > upwards. The issue is not that there will be compatibilty
> > problems with any data migration but that the truth is exactly
> > opposite of what's claimed in Section 13.13.
>
> Implying? There's a solid word. Migrating data from SQLite to other
> databases is no more difficult or easy than migrating data to any
> other database. Do you think this is ever trivial? It's as hard or as
> easy as you make it. No database can just take any schema and the data
> you put in it and just magically convert that schema/data to
> flawlessly work in any arbitrary database of your choosing. Some
> databases have tools to help with this, but they still are not
> perfect.

So, knowing that, would you agree that

<quote Python Library Reference 13.13>
If switching to a larger database such as PostgreSQL or Oracle
is later necessary, the switch should be relatively easy.
</quote>

is misleading if not outright untruthful?

>
> > I'm not saying sqlite can't be used, what I'm asking for
> > is that the documentation lay the facts out and I'll decide
> > whether I can make this work in my application. Lying about
> > it makes you sound like Microsoft.
>
> Lying? Whose lying?

See above quote. And while you're at it, see the sqlite docs
about how the SQL Language Specification of static typing
is a bug.

> Where on the website is there a lie about
> anything? From what I can tell, you've not taken the time to read the
> documentation or post anything to the mailing list. You've just posted
> jeremiads on the Python list.
>
> Don't like the documentation?

No, it's misleading and full of errors (this is the Python docs
I'm referring to).

> Ever volunteered to help out?

That's what this thread was about, testing the waters.
No point making bug reports if I'm the one who's wrong.
But it turns out I'm not wrong, sqlite IS goofy and this
should be pointed out.

> Ever posted any suggestions on the list or report a bug?

I'm still considering it. This thread has been very useful
towards that.

> Do you really
> think that open source projects exists to serve you and meet your
> standards? Do you think that free code and documentation just falls
> like manna from heaven?

But why does it have to be wrong? It's just as easy to get
things right. Isn't that your complaint, that if I read the sqlite
docs first, the riculous examples in the Python docs would
have made more sense? Why didn't the guy writing the Python
docs read the sqlite docs first?

> Do you honestly think the two core developers
> of SQLite have some secret agenda to deceive you or the world into
> using SQLite?

Why do they claim that the SQL Language Specification of
static typing is a bug? That's simply a lie. Why do they claim
they've "fixed" it in a backwards compatible way? That's another
lie.

Why didn't they simply say they have an alternative to static
typing? Because part of the deception is to make people think
there is something wrong with static typing.

>
> > > Of course you could restrict yourself
> > > to, by example, SQL92 entry level and be a lot more compatible.
> > > But if I'm using a nice OO language like Python which lets me bind
> > > *any* object to *any* name, why should be wrong to bind *any* object
> > > to *any* database column?
> >
> > But SQL isn't OO, it's relational. That means JOINing tables
> > together on a common field. In theory, due to the comparison
> > hierarchy, it is impossible to do JOINs with dynamic typing
> > since different types can never be equal. In practice, the type
> > affinity kluge trys to work around this but can't do anything
> > if the string doesn't look like an integer when a text field
> > attempts to JOIN to an interger field.
>
> Unless you ensure that the correct types are put int the column to
> begin with, which is entirely possible with SQLite, as I've already
> demonstrated. And if that's just too much to bear, you can still do an
> inner join by explicitly casting the two columns in the join
> constraint to a common desired type. Want to know how? Read the
> documentation.

And what do you get when you implement all these kluges?
A database that effectively is static typed. Do you still think
static typing is a bug?



From torerik81 at gmail.com  Sun Sep  3 08:46:10 2006
From: torerik81 at gmail.com (Tor Erik)
Date: Sun, 03 Sep 2006 14:46:10 +0200
Subject: Client-side TCP socket receiving "Address already in use" upon
	connect
In-Reply-To: <edefl6$10dc$1@news.uit.no>
References: <edcrms$auj$1@news.uit.no>
	<mailman.10304.1157280160.27775.python-list@python.org>
	<edefl6$10dc$1@news.uit.no>
Message-ID: <edeiqj$11ef$1@news.uit.no>

Tor Erik wrote:
> Fredrik Lundh wrote:
>> Tor Erik wrote:
>>
>>> The reason is that my application does about 16 connects and data 
>>> transfers per second, to the same 16 remote hosts. After approx 200 
>>> secs there are 4000 sockets waiting to be garbage collected by the OS.
>>
>> what does "netstat" say about these sockets ?
>>
>> </F>
>>
> 
> They are in the TIME_WAIT state... The msn library has an article on how 
> to solve this:
> 
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/BTS06CoreDocs/html/6987640c-1d80-4fbf-b43a-021fc8ba06a4.asp 
> 
> 
> Summing up one could either:
> 
> 1. Increase the upper range of ephemeral ports that are dynamically 
> allocated to client TCP/IP socket connections:
> 
> set registry key: 
> KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\MaxUserPort 
> 
> to a new DWORD value... (5000 - 65534)
> The default in XP is 3976 -> http://support.microsoft.com/kb/Q149532
> 
> or
> 
> 2. Reduce the client TCP/IP socket connection timeout value from the 
> default value of 240 seconds
> 
> set registry key:
> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\TcpTimedWaitDelay 
> 
> to a new DWORD value (30 - 300)
> 
> The TCP RFC (RFC 793) recommends a value of 2*msl(Maximum Segment 
> Lifetime). The general consensus about the value of msn seems to be 1-2 
> minutes, depending on the underlying network... (2*2 min = 2*120 sec = 
> 240 sec)
> 
> 
> I do not want to alter my registry, so I'm currently testing an idea 
> where I let the client connect and send its content, appended with my 
> own "magic" EOF byte-sequence. When the server receives this EOF, it 
> takes care to close the connection. This should eliminate the problem as 
> it is the peer closing the connection that enters the TIME_WAIT state...
> 
> I will report my experiences...

Well...  my idea does not work as expected. Even though the server 
(remote host) calls socket.close(), it is the client that executes 
TIME_WAIT. My guess is that the subtrates below socket closes the 
connection at the peer calling connect regardless of where socket.close 
is called.

Thoughts anyone?


From sjmachin at lexicon.net  Wed Sep 20 05:15:31 2006
From: sjmachin at lexicon.net (John Machin)
Date: 20 Sep 2006 02:15:31 -0700
Subject: byte count unicode string
References: <mailman.316.1158739983.10491.python-list@python.org>
Message-ID: <1158743730.929487.203940@e3g2000cwe.googlegroups.com>

willie wrote:
> >willie wrote:
>  >> Marc 'BlackJack' Rintsch:
>  >>
>  >>  >In <mailman.313.1158732191.10491.python-l... at python.org>, willie
> wrote:
>  >>  >> # What's the correct way to get the
>  >>  >> # byte count of a unicode (UTF-8) string?
>  >>  >> # I couldn't find a builtin method
>  >>  >> # and the following is memory inefficient.
>
>  >>  >> ustr = "example\xC2\x9D".decode('UTF-8')
>
>  >>  >> num_chars = len(ustr)    # 8
>
>  >>  >> buf = ustr.encode('UTF-8')
>
>  >>  >> num_bytes = len(buf)     # 9
>
>  >>  >That is the correct way.
>
>  >> # Apologies if I'm being dense, but it seems
>  >> # unusual that I'd have to make a copy of a
>  >> # unicode string, converting it into a byte
>  >> # string, before I can determine the size (in bytes)
>  >> # of the unicode string. Can someone provide the rational
>  >> # for that or correct my misunderstanding?
>
>  >You initially asked "What's the correct way to get the  byte countof a
>  >unicode (UTF-8) string".
>  >
>  >It appears you meant "How can I find how many bytes there are in the
>  >UTF-8 representation of a Unicode string without manifesting the UTF-8
>  >representation?".
>  >
>  >The answer is, "You can't", and the rationale would have to be that
>  >nobody thought of a use case for counting the length of the UTF-8  form
>  >but not creating the UTF-8 form. What is your use case?
>
> # Sorry for the confusion. My use case is a web app that
> # only deals with UTF-8 strings. I want to prevent silent
> # truncation of the data, so I want to validate the number
> # of bytes that make up the unicode string before sending
> # it to the database to be written.
>
> # For instance, say I have a name column that is varchar(50).
> # The 50 is in bytes not characters. So I can't use the length of
> # the unicode string to check if it's over the maximum allowed bytes.

What is the database API expecting to get as an arg: a  Python unicode
object, or a Python str (8-bit, presumably encoded in utf-8) ?

>
> name = post.input('name') # utf-8 string

You are confusing the hell out of yourself. You say that your web app
deals only with UTF-8 strings. Where do you get "the unicode string"
from??? If name is a utf-8 string, as your comment says, then len(name)
is all you need!!!

*PLEASE* print type(name), repr(name) so that we can see what type it
is!!
If it says the type is str, then it's an 8-bit string, (presumably)
encoded in utf-8.
If it says the type is unicode, then please explain "web app that only
deals with UTF-8 strings" ...

>
> # preferable
> if bytes(name) > 50:
> 	send_http_headers()
> 	display_page_begin()
> 	display_error_msg('the name is too long')
> 	display_form(name)
> 	display_page_end()
>
> # If I have a form with many input elements,
> # I have to convert each to a byte string
> # before i can see how many bytes make up the
> # unicode string. That's very memory inefficient
> # with large text fields - having to duplicate each
> # one to get its size in bytes:

They'd be garbage collected unless you worked very hard to hang on to
them. How large is "large"?



From g.brandl-nospam at gmx.net  Tue Sep 26 03:20:12 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 26 Sep 2006 09:20:12 +0200
Subject: A critique of cgi.escape
In-Reply-To: <efa864$rbf$1@lust.ihug.co.nz>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<ef5lb9$h1k$2@lust.ihug.co.nz><ef5ncc$uus$1@news.albasani.net><mailman.524.1159095305.10491.python-list@python.org>
	<ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
	<efa864$rbf$1@lust.ihug.co.nz>
Message-ID: <efakbd$867$1@news.albasani.net>

Lawrence D'Oliveiro wrote:
> In message <mailman.559.1159188171.10491.python-list at python.org>, Fredrik
> Lundh wrote:
> 
>> Lawrence D'Oliveiro wrote:
>> 
>>>> Georg Brandl wrote:
>>>>
>>>>> A function is broken if its implementation doesn't match the
>>>>> documentation.
>>>>
>>>> or if it doesn't match the designer's intent.  cgi.escape is old enough
>>>> that we would have noticed that, by now...
>>>
>>> _We_ certainly have noticed it.
>> 
>> you're not the designer...
> 
> I don't have to be. Whoever the designer was, they had not properly thought
> through the uses of this function. That's quite obvious already, to anybody
> who works with HTML a lot. So the function is broken and needs to be fixed.
> 
> If you're worried about changing the semantics of a function that keeps the
> same "cgi.escape" name, then fine. We delete the existing function and add
> a new, properly-designed one. _That_ will be a wake-up call to all the
> users of the existing function to fix their code.

What about the users who don't need to "fix" their code since it's working fine
and flawlessly with the current cgi.escape?

Georg


From siona at chiark.greenend.org.uk  Thu Sep 28 11:12:30 2006
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 28 Sep 2006 16:12:30 +0100 (BST)
Subject: Finding the file referred to in a Python traceback
References: <1159280636.760157.298320@e3g2000cwe.googlegroups.com>
Message-ID: <MCh*xMVrr@news.chiark.greenend.org.uk>

 <metaperl.etc at gmail.com> wrote:
>In this traceback, the path to 3 different SQL Alchemy source files is
>a relative directory. However, no such directory is below my current
>working directory.
>
>Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "conf/__init__.py", line 34, in __init__
>    self.table = tables(self.metadata)
>  File "conf/__init__.py", line 38, in __init__
>    self.users         = Table('Users', metadata, autoload=True)
>  File "build/bdist.darwin-8.7.1-i386/egg/sqlalchemy/schema.py", line
>138, in __call__
[etc]
>>>> print sys.path
>['', '/sw/lib/python2.4/site-packages/Dabo-0.6.5s-py2.4.egg',
>'/sw/lib/python2.4/site-packages/SQLAlchemy-0.2.8dev_r1898-py2.4.egg',
[etc]

Paths of files contained in eggs aren't always helpful (as was pointed
out to me recently). If you unzip the SQLAlchemy egg (eggs are just
zip files) (to somewhere other than site-packages if you want to avoid
confusion) you'll probably find schema.py etc. in there.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From sjmachin at lexicon.net  Fri Sep 22 22:48:59 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 19:48:59 -0700
Subject: Fatal error after RE-installing Python 2.3.4
In-Reply-To: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
References: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>
Message-ID: <1158979739.307178.295730@i42g2000cwa.googlegroups.com>


Cappy2112 wrote:
> I've just started a job which has a massive python2.3.4-centric tools
> installation and configuration.
>
> I know what you're going to say, but I can't upgrade and be the only
> one with a newer version. There are close to 30 engineers using this
> same tools configuration, and it has been working fine for a long time.
> For now, we all have to live with the limitations and or bugs in 2.3.4.
>
> I'm running Windows XP, SP2, on a AMD 1.79Ghz MP 2200+.
>
> After editing/testing one of the python test scripts, I was about to
> check a small script change into cvs, when my mentor suggested running
> pychecker. When I did this, I saw a several pages full of warnings.
>
> For me not knowing the code base well enough to know what to expect, He
> thought this was odd, took the file, ran pychecker on his system, with
> the file I've edited, and only sees 4-5 warnings.
>
> We have the same version of Python, that being 2.3.4, the same version
> of pychecker which is 0.8.14.
>
> I had deleted and re-installed pychecker, and still saw the same
> warnings.
> I have compared this to another machine, and again, I am the odd man
> out.
>
> I've deleted all the Python packages, pythonwin, and The core 2.3.4
> distribution, and re-installed everything from scratch.

"deleted" the core 2.3.4 distribution [from where? how?] or
"uninstalled"?
Was c:\windows\system32\python23.dll blown away?

Are you installing it for "all users" or for a single user?
Do a search for python23.dll -- you may find two. This can happen if
you have switched from one way to the other way. DLL in
c:\windows\system32 => all users. DLL somewhere else e.g. c:\python23
=> specific user. Check how this is set up on other working boxes.
Check date and size while you are doing that. Also check what they have
on their system path compared to yours.

>
> Now, When I launch Python from a cmd console, the following is reported
>
> C:\Windows\system32\cmd.exe- python
> The NTVDM CPU has encountered an illegal instruction.
> Chose close to terminate the application.

Have you tried running it with the -v commandline arg to see how far it
gets before crashing?

>
>
> Oddly enough, when I run Python.exe from the Program Files menu, it
> launches just fine.

Yeah, different path.

>
>
> The virus scanner doesn't find any known viruses, and I've also
> disabled the virus checker after un-installing-reinstalling Python the
> last time.
> I've also tried downloading another copy of the installer.
>
> Does anyone have any ideas what is causing this and how to fix it? My
> job depends on me getting Python2.3.4 back to working order.
>

Some thoughts and questions:
1. Telling us what the allegedly spurious pychecker warnings were would
be a good idea.
2. I don't understand the "my job depends" part. Are you responsible
for providing your own computer and installing your own tool-chain on
it?? Is this an initiative test? Can't you get the admin(s) to install
a clean tested kit for you?
3. What is this PC's history? Has it been used successfully in this
environment before you turned up? Was the previous holder of the
position allowed near it after he was told he was getting the chop? Are
all the other engineers using the same configuration?
4. Is Python 2.3.5 a possibility?

HTH,
John



From sybrenUSE at YOURthirdtower.com.imagination  Sun Sep  3 18:37:46 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 4 Sep 2006 00:37:46 +0200
Subject: FYI: getting data from an OpenOffice.org spreadsheet
References: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
	<1157322088.590298.192560@h48g2000cwc.googlegroups.com>
Message-ID: <slrnefmm9q.egf.sybrenUSE@schuimige.stuvel.eu>

John Machin enlightened us with:
> Suppose one has over a hundred spreadsheets (real-life example:
> budgets from an organisation's reporting centres) ... manually
> opening each in OOo Calc is less than appealing, and not very
> robust.

True. There are functions that can load files as well. Combined with
the glob module, this could automatically handle all files in a
certain directory.

> With the 2nd example (alf's question: copy OOo Calc file to Excel
> xls file), I don't see any advantage at all over the manual
> procedure (1) start OOo Calc (2) open Calc file (3) File > Save As >
> select Microsoft Excel 97 etc format > ... what am I missing? Your
> solution requires (1) edit script to change name of output file;
> save script (where?) (2) start OOo Calc with magic-spell on the
> command line (3) open calc file (4) run script.

It's just a demonstration of the file saving process. Indeed, the
saving not all that useful, but someone requested it and I wrote it.

> How does one write a script that can be in control e.g. script
> starts OOo (if necessary),

That's easily done with a system call or the subprocess or popen2
modules.

> and extracts some data from all spreadsheet files in a given
> directory (while one is at lunch)? 

Just add a few lines to load the file instead of picking the currently
opened one. Do you want me to do more digging and extend the code? I'm
willing to do that, but only if it makes you happy :)

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From bignose+hates-spam at benfinney.id.au  Tue Sep 19 02:44:52 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 19 Sep 2006 16:44:52 +1000
Subject: Help
References: <1158598236.920551.175970@b28g2000cwb.googlegroups.com>
Message-ID: <87hcz4gxsr.fsf@benfinney.id.au>

"Rrajal" <rrajal at gmail.com> writes:

> Hi there, I am new in this subject so could you please tell me from
> where I can get help (or good e-book) of python?

You need look no further than Python's own web site.

    <URL:http://www.python.org/doc/>

Of course, you *can* look further if you want to -- and eventually
you'll want to. But start at the source.

-- 
 \      "God forbid that any book should be banned. The practice is as |
  `\               indefensible as infanticide."  -- Dame Rebecca West |
_o__)                                                                  |
Ben Finney



From richardjones at optushome.com.au  Sun Sep 17 20:53:58 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Mon, 18 Sep 2006 10:53:58 +1000
Subject: Cheese Shop Registration error
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
Message-ID: <450dee26$0$22358$afc38c87@news.optusnet.com.au>

alefnula at gmail.com wrote:
> I tried to register on the Python Cheese Shop, but I constatnly get a
> "GPG key ID is invalid" error.
> 
> I made a new GPG key using kgpg, exported the public key to the key
> server, and copy/pasted the Key ID into the registration form... But it
> doesn't work.

And the key ID you were trying to paste in was?


    Richard



From outstretchedarm at hotmail.com  Wed Sep  6 14:58:34 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 6 Sep 2006 11:58:34 -0700
Subject: Script Bug?
In-Reply-To: <mailman.89.1157568405.5279.python-list@python.org>
References: <1157565072.272846.18240@m79g2000cwm.googlegroups.com>
	<mailman.89.1157568405.5279.python-list@python.org>
Message-ID: <1157569114.714681.94320@i3g2000cwc.googlegroups.com>

no, i put those there.

i have restarted IDLE and it now works.  a friend told me it was a bug
in IDLE.

I'd like to try activepython, but i can't dl it from work (that site is
blocked for some reason).  anybody got the install for it, or a mirror
location for it?



From sandravandale at yahoo.com  Tue Sep  5 10:57:39 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 5 Sep 2006 07:57:39 -0700
Subject: threading support in python
In-Reply-To: <mailman.13.1157448384.5279.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<1157422764.573537.116340@m79g2000cwm.googlegroups.com>
	<mailman.13.1157448384.5279.python-list@python.org>
Message-ID: <1157468259.924431.270850@h48g2000cwc.googlegroups.com>

Felipe Almeida Lessa wrote:
> 4 Sep 2006 19:19:24 -0700, Sandra-24 <sandravandale at yahoo.com>:
> > If there was a mod_dotnet I wouldn't be using
> > CPython anymore.
>
> I guess you won't be using then: http://www.mono-project.com/Mod_mono
>
Oh I'm aware of that, but it's not what I'm looking for. Mod_mono just
lets you run ASP.NET on Apache. I'd much rather use Python :) Now if
there was a way to run IronPython on Apache I'd be interested.

-Sandra



From onurb at xiludom.gro  Wed Sep 20 11:55:12 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Wed, 20 Sep 2006 17:55:12 +0200
Subject: Nested Looping SQL Querys
In-Reply-To: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
References: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
Message-ID: <45116461$0$26869$626a54ce@news.free.fr>

Fuzzydave wrote:

(snip)
"""
pubID=cgiForm.getvalue('pubID')
pubName=cgiForm.getvalue('pubName','Unknown Publication')

sqlcheck1 = "SELECT pub_type FROM medusa.cmi_publication WHERE pub_id =
'"+pubID+"'"
overseas1 = conn.query(sqlcheck1)
pubType = cmi.fetch_rows(overseas1)
"""

May we have the url where we can see this application in action ? I know
some crackers that would be really pleased to mess with your production
database...


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From mclaugb at nospm.yahoo.com  Sat Sep  2 09:49:51 2006
From: mclaugb at nospm.yahoo.com (mclaugb)
Date: Sat, 2 Sep 2006 14:49:51 +0100
Subject: thread join() not stopping
Message-ID: <edc269$4r7$1@gemini.csx.cam.ac.uk>

Here is a simple piece of thread code.
When i add the print (or other) function into the run method--the thread
fails to stop after 2 seconds which the join(2) should ensure.
I have a function that I must have timeout and cannot figure a way to do 
this.

Any help appreciated.  Should compile on 2.4

Bryan

import time
from threading import Thread

class MyThread(Thread):

    def __init__(self,mybignum):

        Thread.__init__(self)

        self.mybignum=mybignum

    def run(self):

        for l in range(10):
            for k in range(self.mybignum):
                res=0
                for i in range(self.mybignum):
                    res+=1
                    #########################################
                    print "not stopping"
                    ##########################################

def myadd_nothread(bignum):

    for l in range(10):
        for k in range(bignum):
            res=0
            for i in range(bignum):
                res+=1


    for l in range(10):
        for k in range(bignum):
            res=0
            for i in range(bignum):
                res+=1



def thread_test(bignum):
    #We create 2 Thread objects  for the 2 threads.
    thr1=MyThread(bignum)
    thr2=MyThread(bignum)

    thr1.start()
    thr2.start()

    thr1.join(2)
    thr2.join(2)


def test():

    bignum=150
    #Let us test the threading part

    starttime=time.clock()
    thread_test(bignum)
    stoptime=time.clock()

    print "Running 2 threads took %.3f seconds" % (stoptime-starttime)

    #Now run without Threads.
    starttime=time.clock()
    myadd_nothread(bignum)
    stoptime=time.clock()

    print "Running Without Threads took %.3f seconds" % (stoptime-starttime)


if __name__=="__main__":

    test()







From sjmachin at lexicon.net  Thu Sep 21 19:32:48 2006
From: sjmachin at lexicon.net (John Machin)
Date: 21 Sep 2006 16:32:48 -0700
Subject: I need some help with a regexp please
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
Message-ID: <1158881568.914183.112660@i3g2000cwc.googlegroups.com>

codefire wrote:
> Hi,
>
> thanks for the advice guys.
>
> Well took the kids swimming, watched some TV, read your hints and
> within a few minutes had this:
>
> r = re.compile(r'[^.\w]\w+\.?\w+@[^@\s]+\.\w+')
>
> This works for me. That is if you have an invalid email such as
> tony..bATblah.com it will reject it (note the double dots).
>
> Anyway, now know a little more about regexps :)

A little more is unfortunately not enough. The best advice you got was
to use an existing e-mail address validator. The definition of a valid
e-mail address is complicated. You may care to check out "Mastering
Regular Expressions" by Jeffery Friedl. In the first edition, at least
(I haven't looked at the 2nd), he works through assembling a 4700+ byte
regex for validating e-mail addresses. Yes, that's 4KB.  It's the best
advertisement for *not* using regexes for a task like that that I've
ever seen.

Cheers,
John



From gagsl-py at yahoo.com.ar  Tue Sep 26 01:07:31 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 02:07:31 -0300
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926020607.04a409a8@yahoo.com.ar>

At Monday 25/9/2006 21:27, p.lavarre at ieee.org wrote:

>Q: The C idea of (pv != NULL) is said most directly in Python ctypes
>how?

Perhaps reading the ctypes tutorial? (both in the 2.5 docs and in 
<http://starship.python.net/crew/theller/ctypes/tutorial.html>)



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From sonaldgr8 at gmail.com  Mon Sep  4 02:59:40 2006
From: sonaldgr8 at gmail.com (sonald)
Date: 3 Sep 2006 23:59:40 -0700
Subject: how can i change the text delimiter
In-Reply-To: <1157016896.519900.249960@i42g2000cwa.googlegroups.com>
References: <1156929540.715287.123060@h48g2000cwc.googlegroups.com>
	<1156938927.933389.101170@m73g2000cwd.googlegroups.com>
	<mailman.10106.1156939657.27775.python-list@python.org>
	<1157009138.684850.302570@m79g2000cwm.googlegroups.com>
	<1157016896.519900.249960@i42g2000cwa.googlegroups.com>
Message-ID: <1157353180.570359.260030@74g2000cwt.googlegroups.com>

Hi,
Thanks a lot for the snips you have included in your post...
those were quite helpful...

And about the 3rd party data....
we receive the data in csv format ... but we are not supposed to modify
the files provided by the user directly...

Instead we make another file with the same name & different
extensions... and use the new files created by the python for further
processing....

>         quote_char
>             Defines the character used to quote fields that
>             contain the field separator or newlines.  If set to None
>             special characters will be escaped using the escape_char.
> ##### That's what you are looking for #####

Yes you got me right....
I was indeed looking for the quote_char...

> Aha!! Looks like some misguided person has got a copy of the
> object-craft code, renamed it fastcsv, and compiled it to run with
> Python 2.4 ... so you want some docs. The simplest thing to do is to
> ask it, e.g. like this, but with Python 2.4 (not 2.2) and call it
> fastcsv (not csv):
>

I guess... that's true... ;)

Thank you very much.




Thanks a lot for the reponse
John Machin wrote:

> sonald wrote:
> > Hi,
> > I am using
> > Python version python-2.4.1 and along with this there are other
> > installables
> > like:
> > 1. fastcsv-1.0.1.win32-py2.4.exe
>
> Well, you certainly didn't get that from the object-craft website --
> just go and look at their download page
> http://www.object-craft.com.au/projects/csv/download.html -- stops dead
> in 2002 and the latest windows kit is a .pyd for Python 2.2. As you
> have already been told and as the object-craft csv home-page says,
> their csv was the precursor of the Python csv module.
>
>
> > 2. psyco-1.4.win32-py2.4.exe
> > 3. scite-1.63-setup.exe
> >
> > We are freshers here, joined new... and are now into handling this
> > module which validates the data files, which are provided in some
> > predefined format from the third party.
> > The data files are provided in the comma separated format.
> >
> > The fastcsv package is imported in the code...
> >      import fastcsv
> > and
> >      csv = fastcsv.parser(strict = 1,field_sep = ',')
>
> Aha!! Looks like some misguided person has got a copy of the
> object-craft code, renamed it fastcsv, and compiled it to run with
> Python 2.4 ... so you want some docs. The simplest thing to do is to
> ask it, e.g. like this, but with Python 2.4 (not 2.2) and call it
> fastcsv (not csv):
>
> ... command-prompt...>\python22\python
> Python 2.2.3 (#42, May 30 2003, 18:12:08) [MSC 32 bit (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import csv
> >>> help(csv.parser)
> Help on built-in function parser:
>
> parser(...)
>     parser(ms_double_quote = 1, field_sep = ',',
>            auto_clear = 1, strict = 0,
>            quote_char = '"', escape_char = None) -> Parser
>
>     Constructs a CSV parser object.
>
>         ms_double_quote
>             When True, quotes in a fields must be doubled up.
>
>         field_sep
>             Defines the character that will be used to separate
>             fields in the CSV record.
>
>         auto_clear
>             When True, calling parse() will automatically call
>             the clear() method if the previous call to parse() raised
> an
>             exception during parsing.
>
>         strict
>             When True, the parser will raise an exception on
>             malformed fields rather than attempting to guess the right
>             behavior.
>
>         quote_char
>             Defines the character used to quote fields that
>             contain the field separator or newlines.  If set to None
>             special characters will be escaped using the escape_char.
> ##### That's what you are looking for #####
>         escape_char
>             Defines the character used to escape special
>             characters.  Only used if quote_char is None.
>
> >>> help(csv)
> Help on module csv:
>
> NAME
>     csv - This module provides class for performing CSV parsing and
> writing.
>
> FILE
>     SOMEWHERE\csv.pyd
>
> DESCRIPTION
>     The CSV parser object (returned by the parser() function) supports
> the
>     following methods:
>         clear()
>             Discards all fields parsed so far.  If auto_clear is set to
>             zero. You should call this after a parser exception.
>
>         parse(string) -> list of strings
>             Extracts fields from the (partial) CSV record in string.
>             Trailing end of line characters are ignored, so you do not
>             need to strip the string before passing it to the parser.
> If
>             you pass more than a single line of text, a csv.Error
>             exception will be raised.
>
>         join(sequence) -> string
>             Construct a CSV record from a sequence of fields.
> Non-string
>             elements will be converted to string.
>
>     Typical usage:
>
>         import csv
>         p = csv.parser()
>         file = open('afile.csv')
>         while 1:
>             line = file.readline()
>             if not line:
>                 break
>             fields = p.parse(line)
>             if not fields:
>                 # multi-line record
>                 continue
>             # process the fields
> [snip remainder of docs]
> >
> > can u plz tell me where to find the parser function definition, (used
> > above)
> > so that if possible i can provide a parameter for
> > text qualifier or text separator or text delimiter..
> > just as {field_sep = ','} (as given above)
> >
> > I want to handle string containing double quotes (")
> > but the problem is that the default text qualifier is double quote
> >
> > Now if I can change the default text qualifier... to say pipe (|)
> > the double quote inside the string may be ignored...
> > plz refer to the example given in my previous query...
> >
>
> It *appears* from this message that you have data already in a file,
> and that data is *NOT* (as some one has already told you) in standard
> CSV format.
>
> Let me explain: The magic spell for quoting a field in standard CSV
> format is:
> quote = '"'
> sep = ','
> twoquotes = quote + quote
> if quote in fld:
>     fld = quote + fld.replace(quote, twoquotes) + quote
> elif sep in fld:
>     fld = quote + fld + quote
>
> Note carefully that if the quote character appears in the raw input
> data, it must be *doubled* in the output. If it is not, the standard
> reader can't decode the input unambiguously. If is possible that the
> using ms_double_quote=0 with the [fast]csv module will do the job for
> you. If not, it is possible, if the original data contains *pairs* of
> quotes e.g. -- He said "Hello" to his friend -- to decode that using a
> different state machine. If that's what you've got, e-mail me; I may be
> able to help. However the example you gave had just one quote :-(
>
> *But* are you reading or writing this data? On one hand you say that
> you are getting the data from a 3rd party and can't change it [which
> implies that you are reading] but on the other hand you want to know
> how to tell the [fast]csv module use a "|" as the quote character; that
> would be appropriate under two circumstances (1) you are reading a file
> that already has "pipe" as the quote character (2) you want to create a
> file that quotes using "pipe" ... IOW, it's not guaranteed to work for
> reading an existing file that uses " as the quote character. If there
> is a pipe character in the original data, it will fail. If (more
> likely) there are commas in the original data, then you will get one
> extra field per comma.
>
> A quick simple question: after the above csv = fastcsv.parser(.......),
> does it do csv.parse(.....) or csv.join(...)???? Can you see any
> fread() or fwrite() calls in the code??? If so, which???
>
> HTH -- but you will have to describe what's going on a lot more
> precisely.
> 
> Cheers,
> John



From fredrik at pythonware.com  Wed Sep 20 08:44:16 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 20 Sep 2006 14:44:16 +0200
Subject: Request for elucidation: enhanced generators
In-Reply-To: <1158754746.300782.256090@m73g2000cwd.googlegroups.com>
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>	<mailman.323.1158750988.10491.python-list@python.org>
	<1158754746.300782.256090@m73g2000cwd.googlegroups.com>
Message-ID: <eerd31$ek8$1@sea.gmane.org>

Ben Sizer wrote:

> But do you have an example of such a use case?

here's what I think is the first published example that uses "yield" for 
co-routine-like behaviour:

     http://effbot.org/zone/asyncore-generators.htm

that snippet uses a generator to implement a simple network protocol. 
the generator yields a status code when it needs more data from the 
framework, and the framework uses an instance variable (self.data) to 
pass information into the generator.

Python 2.5 lets you eliminate the instance variable; instead of using an 
external shared variable, the framework can use "send" to pass data into 
the generator, and the generator can use ordinary expression syntax to 
pick it up.

</F>



From richard at sneakerfish.com  Tue Sep 19 13:29:23 2006
From: richard at sneakerfish.com (Richard Morello)
Date: Tue, 19 Sep 2006 13:29:23 -0400
Subject: Curious issue with simple code
In-Reply-To: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
Message-ID: <000c01c6dc11$2cb6cc90$8c021eac@MORELLOTABLET>

Dear Tony,

You're not in that directory (start_dir) when the isfile() function is
called.  See function os.path.curdir() and os.chdir().  Also, you may be
confusing the behavior of os.path.walk(), in which the function called will
happen once you have been chdired to the directory it is examining.  

Hope this was helpful.

Yours truly,
Rich.

-----Original Message-----
From: python-list-bounces+richard=sneakerfish.com at python.org
[mailto:python-list-bounces+richard=sneakerfish.com at python.org] On Behalf Of
codefire
Sent: Tuesday, September 19, 2006 1:08 PM
To: python-list at python.org
Subject: Curious issue with simple code


Hi,

I have some simple code - which works...kind of..here's the code:

[code]
import os

def print_tree(start_dir):
    for f in os.listdir(start_dir):
        fp = os.path.join(start_dir, f)
        print fp
        if os.path.isfile(fp): # will return false if use f here!
            if os.path.splitext(fp)[1] == '.html':
                print 'html file found!'
        if os.path.isdir(fp):
            print_tree(fp)

print os.path
print_tree(r'c:\intent\docn')
[/code]

As above it all works as expected. However, on the marked line, if I use f
instead of fp then that condition returns false! Surely,
isfile(f) should return true, even if I just give a filename, rather than
the full path? 

If anyway can explain this I'd be grateful,

Tony

-- 
http://mail.python.org/mailman/listinfo/python-list




From steve at holdenweb.com  Mon Sep  4 10:05:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 04 Sep 2006 15:05:51 +0100
Subject: This seems to crash my program and gives me errors on the #include
	statements
In-Reply-To: <1157375279.790255.321010@b28g2000cwb.googlegroups.com>
References: <1157375279.790255.321010@b28g2000cwb.googlegroups.com>
Message-ID: <edhbr9$uca$1@sea.gmane.org>

Eric_Dexter at msn.com wrote:
> I was trying to add this to my project but I must be missing some
> includes or there is a serius error somewhere
> 
[...]
> 
> I cut and pasted this..  It seems to be crashing my program.. I am not
> sure that I have all the right imports..  seems to be fine when I go to
> 
> an older version of the file...  I uploaded it onto source forge.
> 
> https://sourceforge.net/project/showfiles.php?group_id=156455&package...
> 
> http://www.dexrow.com
> 

Nobody, or very few people, are going to bother to download code from 
sourceforge just to help you debug it.

As far as I can see you haven't yet explained *how* your program fails: 
does it give a Python error traceback (in which case we would need to 
see that traceback, which will at least tell us where the error occurs) 
or something else? "A serious error" tells us effectively nothing except 
that your program isn't doing what you want it to do, so even reading 
the source probably won't help.

Have you tried reproducing the "serious error" in a smaller program that 
you could include as a part of a posting on this list?

You are hiding the very information that is needed to help you solve 
your problem.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From rdm at rcblue.com  Sun Sep 10 19:53:26 2006
From: rdm at rcblue.com (Dick Moores)
Date: Sun, 10 Sep 2006 16:53:26 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <4g%Mg.770$5i7.457@newsreading01.news.tds.net>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
	<mailman.223.1157856559.5279.python-list@python.org>
	<4g%Mg.770$5i7.457@newsreading01.news.tds.net>
Message-ID: <7.0.1.0.2.20060910163859.06118678@rcblue.com>

At 02:15 PM 9/10/2006, Kent Johnson wrote:
>Dick Moores wrote:
> > At 01:10 PM 9/8/2006, Doug Stell wrote:
> >> Try www.TextPad.com. I've used it for years and love it. It
> >> understands many programming language constructs and can be taught to
> >> understand python so that things show up in color.
> >
> > Any tips on how to teach TextPad to understand python?
>Download and install the Python syntax highlighting definition from the
>TextPad website.

Thanks very much, Kent. I've been using TextPad for 10 years and 
never considered using it for Python.

I downloaded Python (7) from 
http://www.textpad.com/add-ons/synn2t.html and put the file 
PythonV2.4.syn in C:\Program Files\TextPad 4\system .

>I make a tool to run the front window in Python. Here are the values
>from the preferences window for the tool:
>
>Command: C:\Python24\python.exe
>Parameters: -u $File
>Init fldr: $FileDir
>
>regex to match output:
>^.*"([^"]+)", *line ([0-9]+)
>
>with File: 1, Line: 2

After fumbling around, I believe I've made the tool, using your 
values, except I used E:\Python24\python.exe instead of 
C:\Python24\python.exe .

I also associated .py with TextPad. I'm now able to open a Python 
script with TextPad, and execute it with  Ctrl+4.

However, no syntax highlighting is showing up. so I must have done 
something wrong. Do I have to do something other than put 
PythonV2.4.syn in C:\Program Files\TextPad 4\system ?

Also, why do you use TextPad instead of IDLE?

Thanks,

Dick Moores




From wildemar at freakmail.de  Thu Sep 21 02:12:20 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 08:12:20 +0200
Subject: wxPython - very small frame
In-Reply-To: <1158817954.645358.281220@b28g2000cwb.googlegroups.com>
References: <1158817954.645358.281220@b28g2000cwb.googlegroups.com>
Message-ID: <45122D44.90201@freakmail.de>

Francach wrote:
> Hi,
> 
> I'd like to create a very small Frame without the usual minimise and
> maximise icons on the top.  Does anyone know how to do this with
> wxPython? I've tried creating a Frame with the style wx.DOUBLE_BORDER,
> which gives me a nice small window. But I can't move it around the
> screen.

There is the wx.FRAME_TOOL_WINDOW style (which is nice, but the frame 
won't be listed in the taskbar).

But right now you're probably looking for wx.CAPTION (have you, by any 
chance, only looked up the styles for wx.Window, neglecting the ones of 
wx.Frame?)

hope that does it.
wildemar
(btw: you might want to ask such questions on the wxPython list instead)


From fredrik at pythonware.com  Fri Sep  1 13:12:31 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 01 Sep 2006 19:12:31 +0200
Subject: Strange import behavior
In-Reply-To: <1157128666.851261.55930@i42g2000cwa.googlegroups.com>
References: <1157128666.851261.55930@i42g2000cwa.googlegroups.com>
Message-ID: <ed9plv$lg1$1@sea.gmane.org>

unexpected wrote:

> I'm having problems importing a file into my python app. Everytime I
> try to define the object specified by this file, i.e,
> 
> test = Test(),
> 
> It raises an ImportError exception: ImportError: cannot import name
> Test.
> 
> I've declared it as:
> 
> from test import Test (and I've also tried from test import *)
> 
> As luck would have it, if I try creating a newfile (say test2) and then
> declare the same class as:
> 
> from test2 import Test()
> 
> It works fine!

your code samples make very little sense, and the last one isn't even 
valid Python syntax.

maybe you could post a complete self-contained example (including the 
file names, and what's in what file), instead of typing from memory ?

</F>



From franz.steinhaeusler at gmx.at  Sat Sep 16 12:16:13 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhäusler)
Date: Sat, 16 Sep 2006 18:16:13 +0200
Subject: XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
	<r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>
	<20060914193558.2234.50297.XPN@orion.homeinvalid>
	<qrtkg2hre9m1606akgnkgufiip2citkvau@4ax.com>
	<1158325872.846004.66150@k70g2000cwa.googlegroups.com>
Message-ID: <n87og2hld6hccc5bagbsegsjcpvede2ir8@4ax.com>

On 15 Sep 2006 06:11:12 -0700, "Nemesis" <gnemesis2001 at gmail.com>
wrote:

>Franz Steinhaeusler wrote:
>> A few other notes (or should I post into the feature requests on
>> sourceforge?)
>
>To be honest I do not check sourceforge forums very often. If you want
>you can also send me an email (the email is written in the readme
>file).

Ok. I have still a few suggestions! ;)

>
>> little point: I find it superfluos on the header pane, to always have
>> the term "Re:" before (it would probaly easier to read without this
>> text).
>
>Maybe that's true ... but I tend not to modify the informations I show,
>I like not to elaborate to much the articles.

Yes.

>
>> an option possibly (as in agent): if you click on the tree the "+" sign,
>> it would be more convenient (for me) to open *all* subbranches, this
>> means show all responses headers for this thread.
>
>I should change the behaviour of the expander and that's not a correct
>way of acting.
>You can expand the whole thread with the command "Expand Selected
>Subthread" in the "Subscribed Groups" menu (or on the Toolbar). If you
>want you can associate a shortcut to this function ... there is also a
>standard GTK shortcut for this function SHIFT+CTRL+NUMPAD_PLUS
>where NUMPAD_PLUS is the plus key on the numpad.

Ah, great. I changed, this was not working immediatly.
So I remembered, most often you have to restart the App, and so its is
working.

Small Notice: There was the warning then: Another Instance is running,
I pressed yes.


>
>> if you change the groups, it would be nice to remember the position of
>> the last readed thread in the header pane, which means changing forth
>> and back to a certain group (as option for example).
>
>that's an optimization I've thinking about for a while ... but at the
>moment I don't know how to implement it.

I see, you have to remember after refreshing the list the position and
the state of the folding. I can imagine, this is not trivial.

I'm sure, I will discover some more useful things about your program!
In some cases, it already beats forte agent!


Some remarks:

* I don't find any function to delete threads or single messages (for
spam messages for instance)

* It would be fine to have an option to switch in search for "case
insensitive" as default on.

* nice would be, if nothing is found in the search, a little message
box appear.

* threads are somtimes not assigned correctly, this means, that
one thread is divided into two.
I subscribed to wxPyhton mailing list in gmane, and there is:
One thread
Applications written in wxPyhton
and another
RE: Applications written in wxPyhton

but this (is) or should be *one* thread.

* the enter key is not working in some dialogs (for example in search)
and Esc to cancel the dialog. (or is that a gkt issue?)

* the find dialog is sometimes not working

* in the find, it would be nice to remember the last state.
I check (case insensitive on, and the next time, this option is of
again).

* After starting XPN, it would be good, to jump
either the last selected group or the first group immediatly
showing the headers.

* to mark more than one article at one time (to be able to mark
multiple articles at one as read, ...)

* If I press 'n' for next: the last message is reached in a group,
and I find it useful to jump to the next group and looks for the next
unread message. (Now it simply stops there).

If I am wrong about some things, please correct me.
It could be that I have overseen some things.

best regards,


-- 
Franz Steinhaeusler


From horpner at yahoo.com  Tue Sep  5 10:29:20 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 5 Sep 2006 16:29:20 +0200
Subject: Test for number?
References: <1157390891_40515@sp6iad.superfeed.net>
	<1157399309.305809.76610@74g2000cwt.googlegroups.com>
Message-ID: <slrnefr2en.1nc.horpner@FIAD06.norwich.edu>

On 2006-09-04, George Sakkis <george.sakkis at gmail.com> wrote:
> Dr. Pastor wrote:
>> In the following code I would like to ascertain that x has/is
>> a number. What the simplest TEST should be? (Could not find
>> good example yet.)
>> ---
>> x=raw_input('\nType a number from 1 to 20')
>> if TEST :
>> 		Do_A
>> else:
>> 		Do_B
>> ---
>> Thanks for any guidance.
>
> x=raw_input('\nType a number from 1 to 20')
> try:
>     x = int(x)
>     if x<1 or x>20: raise ValueError()
> except ValueError:
>     Do_B
> else:
>     Do_A
>
> If you want to distinguish between the two error cases (not a
> number vs number not in [1,20]), handle the second one as
> "Do_C" instead of raising ValueError.

Is the original value of x available in Do_B and Do_A, or will it
have been clobbered before getting there?

-- 
Neil Cerutti


From kenneth.m.mcdonald at sbcglobal.net  Wed Sep 13 22:03:53 2006
From: kenneth.m.mcdonald at sbcglobal.net (kenneth.m.mcdonald at sbcglobal.net)
Date: Thu, 14 Sep 2006 02:03:53 GMT
Subject: Python to JavaScript Compiler? Anyone written such a beast?
Message-ID: <dM2Og.1751$IA.558@newssvr11.news.prodigy.com>

Of course, I'm not talking about something that would transform
any Python code into semantically JavaScript code, but simply
something that would analyze a "restricted" Python source file,
and spit out equivalent JavaScript. The big advantage (as far
as I'm concerned) is that one could make use of some of the
syntactic shortcuts that JavaScript doesn't offer, that the Python
syntax checker generally does a better job than the JS one, and
(perhaps most importantly) this could be configured to put in 'instrumentation',
such as checks to make sure than an attempt to access an undefined
attribute actually throws an error.

Color me curious,
Ken



From theaney at gmail.com  Sun Sep 17 10:18:10 2006
From: theaney at gmail.com (Tim Heaney)
Date: Sun, 17 Sep 2006 10:18:10 -0400
Subject: matplotlib: TypeError: a float is required
References: <eejesq$guv$1@online.de> <m3mz8yzizy.fsf@calvin.watterson>
	<eejks5$qqn$2@online.de>
Message-ID: <m3irjmzie5.fsf@calvin.watterson>

Andi Clemens <andi.clemens at gmx.net> writes:
>
> THATS IT! Thanks!
> But why are all the examples wrong? Maybe they changed the API?

I think it's a bug. You should report it. Looking at

  http://matplotlib.sourceforge.net/faq.html#BUGREPORT

it seems you can use either the mailing list or sourceforge.

Tim


From cyberco at gmail.com  Mon Sep 18 17:50:46 2006
From: cyberco at gmail.com (cyberco)
Date: 18 Sep 2006 14:50:46 -0700
Subject: Which date will it be 'over x days'?
Message-ID: <1158616246.298384.185630@i3g2000cwc.googlegroups.com>

I must be overlooking something since I can't find a simple way to
calculate which date it will be over, say, 9 days. I checked the
datetime, time and calendar modules, but none of them seem to have a
function to calculate the time offset.



From jaysherby at gmail.com  Fri Sep 29 20:05:58 2006
From: jaysherby at gmail.com (Jay)
Date: 29 Sep 2006 17:05:58 -0700
Subject: DAT file compilation
In-Reply-To: <4o5qhvFd1bddU1@uni-berlin.de>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
	<4o5qhvFd1bddU1@uni-berlin.de>
Message-ID: <1159574758.612198.141410@i3g2000cwc.googlegroups.com>

That's one solution, but I'd rather a file format the end-user can't
easily mess around with.
Diez B. Roggisch wrote:
> Jay schrieb:
> > Is there a way through python that I can take a few graphics and/or
> > sounds and combine them into a single .dat file?  If so, how?  And how
> > can I access the data in the .dat file from inside the python script?
> 
> Use a zip-file. See the zipfile-module.
> 
> Diez



From jstroud at mbi.ucla.edu  Thu Sep 21 18:04:41 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 22:04:41 GMT
Subject: Tkinter button not working as expected
In-Reply-To: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>
References: <1158874111.596325.244410@i42g2000cwa.googlegroups.com>
Message-ID: <Z%DQg.3406$vJ2.2814@newssvr12.news.prodigy.com>

vagrantbrad at yahoo.com wrote:
> I've created a short test program that uses tkFileDialog.askdirectory
> to help the user input a path into a tk entry widget.  The problem I'm
> having is that when I run the code as listed below, the getPath
> function is called when the program initially runs, not when the button
> is pressed.
> 
> from Tkinter import *
> import tkFileDialog
> 
> class App:
> 
>     def __init__(self, master):
> 
>         frame = Frame(master)
>         frame.pack()
> 
>         t = StringVar()
>         self.entry = Entry(frame, textvariable=t)
>         self.entry.pack(side=LEFT)
> 
>         self.button = Button(frame, text="Select", fg="red")
>         self.button["command"] = self.getPath(t)
>         self.button.pack(side=LEFT)
> 
>     def getPath(self, t):
>         dirPath = tkFileDialog.askdirectory(initialdir="c:\\")
>         print dirPath
>         t.set(dirPath)
> 
> root = Tk()
> app = App(root)
> root.mainloop()
> 
> 
> The problem arises when I try to pass the t variable in the "command"
> option of the button widget.  If I set the command to
> "command=self.getpath" rather than "command=self.getpath(t)", then I
> don't get this issue.  But I would like to be able to pass a variable
> to the the function through the command option.  I'm a Tk newbie ....
> what am I doing wrong?
> 

Well, in python 2.5, you might consider functools.partial.

Other options, including lambda, will be suggested and are the 
traditional way to do this sort of thing.

Here is the revised code:

import functools
from Tkinter import *
import tkFileDialog

class App:

     def __init__(self, master):

         frame = Frame(master)
         frame.pack()

         t = StringVar()
         self.entry = Entry(frame, textvariable=t)
         self.entry.pack(side=LEFT)

         self.button = Button(frame, text="Select", fg="red")

         # note change here
         self.button["command"] = functools.partial(self.getPath, t)
         self.button.pack(side=LEFT)

     def getPath(self, t):
         dirPath = tkFileDialog.askdirectory(initialdir="c:\\")
         print dirPath
         t.set(dirPath)

root = Tk()
app = App(root)
root.mainloop()




-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From daniel.baluta at gmail.com  Wed Sep 13 10:54:01 2006
From: daniel.baluta at gmail.com (daniel)
Date: 13 Sep 2006 07:54:01 -0700
Subject: python threading
Message-ID: <1158159241.154089.266630@h48g2000cwc.googlegroups.com>

can someone give me a good threading tutorial
thx



From alex_f_il at hotmail.com  Wed Sep 20 14:42:05 2006
From: alex_f_il at hotmail.com (alex_f_il at hotmail.com)
Date: 20 Sep 2006 11:42:05 -0700
Subject: Mechanoid Web Browser - Recording Capability
In-Reply-To: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
Message-ID: <1158777725.633594.66470@e3g2000cwe.googlegroups.com>

You can try  SWExplorerAutomation (SWEA) (http:\\webunittesting.com).
It works very well with the password protected sites. SWEA is .Net API,
but you can use IronPython to access it.

Seymour wrote:
> I am trying to find a way to sign onto my Wall Street Journal account
> (http://online.wsj.com/public/us) and automatically download various
> financial pages on stocks and mutual funds that I am interested in
> tracking.  I have a subscription to this site and am trying to figure
> out how to use python, which I have been trying to learn for the past
> year, to automatically login and capture a few different pages.
> I have mastered capturing web pages on non-password sites, but am
> struggling otherwise and have been trying to learn how to program the
> Mechanoid module (http://cheeseshop.python.org/pypi/mechanoid) to get
> past the password protected site hurdle.
>
> My questions are:
> 1. Is there an easier way to grab these pages from a password protected
> site, or is the use of Mechanoid a reasonable approach?
> 2. Is there an easy way of recording a web surfing session in Firefox
> to see what the browser sends to the site?  I am thinking that this
> might help me better understand the Mechanoid commands, and more easily
> program it.  I do a fair amount of VBA Programming in Microsoft Excel
> and have always found the Macro Recording feature a very useful
> starting point which has greatly helped me get up to speed.
> 
> Thanks for your help/insights.
> Seymour



From python.list at tim.thechases.com  Sat Sep  2 11:21:11 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 02 Sep 2006 10:21:11 -0500
Subject: how to remove n bytes in a file?
In-Reply-To: <44F99686.7000707@tim.thechases.com>
References: <200609021321.k82DLTnO005030@fe10.bluebottle.com>
	<44F99686.7000707@tim.thechases.com>
Message-ID: <44F9A167.4000006@tim.thechases.com>

> def shift(f, offset, size, buffer_size=1024*1024):

Slight bug in that function implementation.  This one passes my 
tests.

Sorry about that.

-tkc


def shift(f, offset, size, buffer_size=1024*1024):
	"""deletes (in place) a portion of size "size" from file "f", 
starting at offset "offset"

The buffer_size can be tweaked for system preferences,
defaulting to 1 megabyte.
"""

	f.seek(offset + size)
	while True:
		buffer = f.read(buffer_size)
		if not buffer: break
		f.seek(offset)
		f.write(buffer)
		offset += buffer_size
		f.seek(offset + size)
	f.seek(-size,2)
	f.truncate()

if __name__ == '__main__':
	offset = ord('p')
	size = 5
	buffer_size = 10

	from StringIO import StringIO
	s = ''.join([chr(i) for i in xrange(256)])
	print repr(s)
	print "="*50
	f = StringIO(s)
	# delete "p" through "u"
	shift(f, offset, size, buffer_size)
	f.seek(0)
	result = f.read()
	print repr(result)







From onurb at xiludom.gro  Tue Sep 26 12:49:48 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Tue, 26 Sep 2006 18:49:48 +0200
Subject: Splitting device addresses into parts
In-Reply-To: <efbl8h$kf2$03$1@news.t-online.com>
References: <efbl8h$kf2$03$1@news.t-online.com>
Message-ID: <45195a2d$0$27565$626a54ce@news.free.fr>

Fabian Steiner wrote:
> I often have to deal with strings like "PCI:2:3.0" or "PCI:3.4:0" and
> need the single numbers as tuple (2, 3, 0) or (3, 4, 0). Is there any
> simple way to achieve this? So far I am using regular expressions but I
> would like to avoid them ...

devices = ["PCI:2:3.0", "PCI:3.4:0"]
for d in device:
  nums = tuple(map(int, d.split(':')[1:]))
  print "for ", d, " : ", nums


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From malaclypse2 at gmail.com  Fri Sep 15 09:44:40 2006
From: malaclypse2 at gmail.com (Jerry Hill)
Date: Fri, 15 Sep 2006 09:44:40 -0400
Subject: Searching for patterns on the screen
Message-ID: <16651e80609150644j6d65b937ga093e9b0d18f1a23@mail.gmail.com>

Hello all,

I have a piece of code I could use some help optimizing.  What I'm
attempting to do is periodically grab a screenshot, and search for 2D
patterns of black pixels in it.  I don't care about any color other
than black.  Here's some simple code that simulates my worst-case
scenario, scanning the whole screen for a sequence that does not
exist:

import ImageGrab  # From the PIL library

def removeColor(rgb):
    r, g, b = rgb
    return (r == 0 and g == 0 and b == 0)

BMP = ImageGrab.grab.getdata()
x = map(removeColor, BMP)

The idea is to search for sequences of black pixels on a background
that can change colors.  To that end, I transform the screengrab into
a sequence of either black or nonblack pixels as I search them. Note
that in my actual code, I use imap so I only transform pixels as I
search them, and I'm using the KnuthMorrisPratt algorithm from
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/117214 to do
the actual searching.

>From some testing using the timeit module:
map(None, BMP) takes about 0.6 seconds on a 1600x1200 screengrab.
map(removeColor, BMP) takes about 1.5 seconds.

I'd love to speed things up, if possible.  It seems like what I'm
doing would probably be a fairly well defined problem, but I don't
know enough about the field to even know where to start my research,
so even a list of keywords that would point me to discussion of
similar topics would be welcome.

This is being done in Python 2.5c2 using PIL 1.1.5

-- 
Jerry


From steve at holdenweb.com  Tue Sep 26 11:59:27 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 11:59:27 -0400
Subject: Ordered dicts
In-Reply-To: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
References: <1159273817.294083.291470@m7g2000cwm.googlegroups.com>
Message-ID: <efbinh$hsc$1@sea.gmane.org>

bearophileHUGS at lycos.com wrote:
> I have found that in certain situations ordered dicts are useful. I use
> an Odict class written in Python by ROwen that I have improved and
> updated some for personal use.
> 
> So I'm thinking about a possible C version of Odict (maybe fit for the
> collections module).
> 
> On a 32 bit Win Python 2.5 requires about:
> 28.2 bytes/element for set(int)
> 36.2 bytes/element for dict(int:None)
> 
> Deleted keys from a dict/set aren't removed, they are tagged as
> deleted.
> My experience of CPython sources is tiny, I have just read few parts,
> so a person much more expert than me can comment the following lines.
> 
> During the printing of the set/dict I think such flags are just read
> and skipped one after the other.
> 
> So I think to keep the insertion order of the keys a simple chained
> list is enough, each inserted key has a pointer to the successive one
> (even deleted keys). So theoretically an Odict of (int:None) can
> require just 40.2 bytes/element :-)  (Python Odicts require much more
> memory, because they ).
> (I don't know if some extra memory for the garbage collector is
> necessary, I don't think so.)
> 
> The simple linked list has to be managed (tail insertions only), and
> scanned from the listHead inside iterating methods like iteritems,
> items, values, etc.
> 
> If such solution is possibile, then how much difficult is such
> implementation?

FYI there was a *long* discussion around the need for Speed sprint about 
implementing ordered dicts. As the discussion started by your thread has 
started to reveal, everyone has just-ever-so-slightly-different 
requirements. IIRC the goal was dropped because it wasn't possible to 
agree on a specification.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjdevnull at yahoo.com  Tue Sep 19 07:09:16 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 19 Sep 2006 04:09:16 -0700
Subject: Python programs always open source?
In-Reply-To: <4n9n4iF99lbqU1@uni-berlin.de>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
	<4n9n4iF99lbqU1@uni-berlin.de>
Message-ID: <1158664156.202691.38950@m7g2000cwm.googlegroups.com>

Diez B. Roggisch wrote:
> Ben Finney schrieb:
> >>>> Ben Finney wrote:
> >>>>> So long as you're not distributing some or all of Python itself,
> >>>>> or a derivative work, the license for Python has no legal effect
> >>>>> on what license you choose for your own work.
> >
[SNIP]
> > My claim (and IANAL) is that it doesn't matter *what* license Python
> > is distributed under; unless you do something with Python that is a
> > right of the copyright holder, such as distributing part or all of
> > Python, the copyright license terms of Python have no legal effect on
> > what license you choose for your own work.
>
> IANAL - having said that:
>
> Not true for the GPL.

[Re: the hypothetical situation where Python were GPL'd]

It doesn't matter what the GPL says, if your work is not a derivative
work of Python then you have no obligation to follow _any_ terms in
Python's license to distribute your own work.  The GPL could make all
the claims it wants[1], it doesn't matter since you aren't legally
required to follow any of them for your own (non-derived) work.

In particular, if your program ran on PyPy or Jython, it'd be pretty
much impossible to argue that it's a derivative work of CPython. Now,
if Jython/PyPy both required CPython libraries (which your code used)
then there could be a case that your code is derivative of those
libraries and bound by their license terms--it's not obvious that
argument would fly, but it's also not obvious it wouldn't.

[1] in reality the GPL recognizes this--see clause 5



From amit.man at gmail.com  Mon Sep 11 14:34:45 2006
From: amit.man at gmail.com (noro)
Date: 11 Sep 2006 11:34:45 -0700
Subject: efficient text file search.
In-Reply-To: <mailman.257.1157987154.5279.python-list@python.org>
References: <NYOBGCEXSMTP20WO6hm000003b5@nyobgcexsmtp20.uswin.ad.vzwcorp.com>
	<mailman.249.1157979719.5279.python-list@python.org>
	<1157986083.091290.197570@m73g2000cwd.googlegroups.com>
	<mailman.257.1157987154.5279.python-list@python.org>
Message-ID: <1157999684.990828.314810@i42g2000cwa.googlegroups.com>

i'm not sure.

each line in the text file and an index string. i can sort the file,
and use some binary tree search on
it. (I need to do a number of searchs).
there are 1219137 indexs in the file. so maby a memory efficient sort
algorithm is in place.
how can mmap help me?
is there any fbinary search algorithm for text files out there or do i
need to write one?


Steve Holden wrote:
> noro wrote:
> > Bill Scherer wrote:
> >
> >>noro wrote:
> >>
> >>
> >>>Is there a more efficient method to find a string in a text file then:
> >>>
> >>>f=file('somefile')
> >>>for line in f:
> >>>   if 'string' in line:
> >>>        print 'FOUND'
> >>>
> >>>?
> >>>
> >>>BTW:
> >>>does "for line in f: " read a block of line to te memory or is it
> >>>simply calls f.readline() many times?
> >>>
> >>>thanks
> >>>amit
> >>>
> >>>
> >>
> >>If your file is sorted by some key in the data, you can build a very
> >>fast binary search with mmap in Python.
> >
> >
>  > can you add some more info, or point me to a link, i haven't found
>  > anything about binary search in mmap() in python documents.
>  >
>  > the files are very big...
>  >
> [please don't "top-post": add your latest comments at the end so the
> story reads from the beginning].
>
> I think this is probably not going to help you. A binary search is only
> useful if you want to locate a value in an ordered list. Since your
> original posting made it seem like the text you are looking for could
> appear in any position in any line of the file a binary search doesn't
> do you any good at all (in fact it complicates things and slows them
> down unnecessarily) because you'd still need to look at all lines.
>
> Plus, if the lines are of variable length then you'd need to start by
> creating an index of them, meaning you'd have to go right through the
> file anyway.
>
> regards
>   Steve
> --
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden



From duncan.booth at invalid.invalid  Fri Sep 22 04:27:49 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 22 Sep 2006 08:27:49 GMT
Subject: new string method in 2.5 (partition)
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<mailman.299.1158709371.10491.python-list@python.org>
	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
	<mailman.354.1158791333.10491.python-list@python.org>
	<ef04oo$gcc$4@lust.ihug.co.nz>
Message-ID: <Xns9846604147CD6duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> In message <mailman.354.1158791333.10491.python-list at python.org>, Gabriel
> Genellina wrote:
> 
>> ... a python string has both a length *and* a null terminator (for
>> ease of interfacing C routines ...
> 
> How does that work for strings with embedded nulls? Or are the C routines
> simply fooled into seeing a truncated part of the string?
> 
If passed to a C library function it would mean that the C code would 
generally only use up to the first embedded null. However the Python 
standard library will usually check for nulls first so it can throw an 
error:

>>> with open('test.txt', 'r') as f:
...     print f.read()
...
Hello world

>>> with open('test.txt\x00junk', 'r') as f:
...     print f.read()
...
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: file() argument 1 must be (encoded string without NULL 
bytes), not str
>>>

What actually happens is that Python argument parsing code will reject 
values with embedded nulls if asked to convert a parameter to a C string 
('s', 'z', 'es', or 'et' formats), but will allow them if converting to a C 
string and a length ('s#', 'z#', 'es#', or 'et#').


From phd at phd.pp.ru  Thu Sep 21 08:11:52 2006
From: phd at phd.pp.ru (Oleg Broytmann)
Date: Thu, 21 Sep 2006 16:11:52 +0400
Subject: mxCGIPython
Message-ID: <20060921121151.GA14511@phd.pp.ru>

Hello!

   For quite some time I was a maintainer of mxCGIPython. Now I am going
to stop. There will no be mxCGIPython for Python 2.5. Python is quite
popular these days, it is hard to find hosting without it. Original author
abandoned mxCGIPython long ago, and I only provided some simple patches to
port mxCGI to Python 2.3 and 2.4. But still mxCGIPython requires more work,
and I'd rather abandon it too than maintain an old broken package. Also I
have lost access to SPARK computer, and can only provide binaries for
pretty uninteresting platforms - Linux and FreeBSD.

   Well, enough excuses. Is there anyone who wants to strip me of the
burden, take the maintainance, compile new binaries and host them? Please
copy the existing binaries and write me - I will put a redirect page.

WHAT IS mxCGIPython
-------------------

   See: http://www.egenix.com/files/python/mxCGIPython.html
http://phd.pp.ru/Software/Python/misc/mxCGI/

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.


From gabrielg_laburando at yahoo.com.ar  Tue Sep 26 18:49:17 2006
From: gabrielg_laburando at yahoo.com.ar (Gabriel G)
Date: Tue, 26 Sep 2006 19:49:17 -0300
Subject: A critique of cgi.escape
In-Reply-To: <slrnehij7q.evq.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
Message-ID: <7.0.1.0.0.20060926192105.032edc50@yahoo.com.ar>

At Tuesday 26/9/2006 12:53, Jon Ribbens wrote:

> > BTW, I am curious about how you do unit testing. The example that I used
> > in my summary is a very common pattern but would break in cgi.escape
> > changed it's semantics. What do you do instead?
>
>To be honest I'm not sure what *sort* of code people test this way. It
>just doesn't seem appropriate at all for web page generating code. Web
>pages need to be manually viewed in web browsers, and validated, and
>checked for accessibility. Checking they're equal to a particular
>string just seems bizarre (and where does that string come from
>anyway?)

By example, I do not validate a "page". I validate that all methods 
that make up pieces of a page, build them the way they should - these 
are our "unit tests". Then, it's up to the templating library to join 
all the pieces into the final html page.
I validated the original html against the corresponding dtd some time 
ago (using the w3c validator), and ocasionally when things "looks 
wrong" on a browser, but most of the time the html generated pages 
are not validated nor checked as a whole.
What you describe are another kind of tests, and really should not 
depend on the details of cgi.escape - as the usability test of an MP3 
player does not care about some transitor's hFE used inside...



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From wolfgang.keller.nospam at gmx.de  Sat Sep 30 07:42:25 2006
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: Sat, 30 Sep 2006 13:42:25 +0200
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
Message-ID: <0001HW.C14424C100B023CEF0488530@news.individual.de>

>   - python work on multiple platform (linux, mac, windows)
> 	A good point but it didn't interest him. Because
> 	we want to choose a language for prototyping.
> 	So multi platform is not enough.

With Python the prototype _is_ the application. You just need to add a little 
bit of polishing (exception handling etc.) where required, maybe implement a 
speed-critical module in Pyrex, that's it.

And for running a production application, cross-platform-ness _is_ important. 
Or what would you do when your customer wants to run his application not just 
on Windows, but on an embedded OS like VxWorks, QNX, or a _real_ server OS 
such as any proprietary Unix (including MacOS X), Linux, *BSD, OS/400 (or 
whatever it is called now), MVS...
 
Can Windev interface with .net? For Python, there's Python.net (not 
Ironpython, that's a different thing).

Can Windev interface with Java? For Python, there's JPype (not Jython, that's 
a different thing as well).

Does Windev interface with JMS, Java RMI, SAP RFC, mqseries and other 
middleware?

Can you build COM clients and servers in Windev? Can you build Corba clients 
and servers in Windev?

Can Windev interface natively with nearly every relational database on the 
planet?

Can you easily access any C/C++ library from Windev?

Is Windev code as readable as Python for non-computer scientists?

...

>   - windev as a good IDE, python? boa-constructor is ok with wxpython

Python for Windows comes with an IDE (PythonWin) iirc. Otherwise there are 
plenty of development tools for database applications in Python (not all 
mentioned below are free):

Access/Filemaker-like:
- Rekall (Qt)
- Knoda (Qt)
- Kexi (Qt)
- Gemello (GTK)
- Glom (GTK)
...

GUI-Builders:
- Qt Designer
- Glade (GTK)
- Gazpacho (GTK) & Kiwi (application framework)
- wxGlade (wxwidgets)
- DialogBlocks (wxWidgets)
- VisualWx (wxWidgets)
- wxDesigner (wxWidgets)
...

IDEs:
- WingIDE
- Eric3
- SPE
- Komodo
- PyDev (for Eclipse)
- Trustudio (for Eclipse)
- Pythoncard (incl. GUI-Builder)
- Boa Constructor (incl. GUI-Builder)
...

Others:
- GNUe (wxWidgets) (complete framework for enterprise database applications, 
including application server etc.)
- TinyERP (GTK) (complete ERP implemented in Python, but if you strip out all 
the ERP-specific modules, you get a powerful framework inlcuding a workflow 
engine)
- Dabo (wxWidgets) (framework & GUI Builder)
...

>   - python is open source (that's not an argument for my boss, sorry 
> it's 	a boss ...)

The point is that with Python you _can_ have commercial support if you 
want/need to. With Windev, as with any other proprietary software, you 
_depend_ on the original developer to continue to exist, fix bugs, implement 
required functionality...

How anyone can bet the existence of a company on proprietary software in a 
time where even multi-billion dollar companys get taken over just to 
"consolidate competition" is beyond my scope of comprehension.

Sincerely,

Wolfgang Keller

-- 
My email-address is correct.
Do NOT remove ".nospam" to reply.



From malaclypse2 at gmail.com  Fri Sep 15 11:39:22 2006
From: malaclypse2 at gmail.com (Jerry Hill)
Date: Fri, 15 Sep 2006 11:39:22 -0400
Subject: Searching for patterns on the screen
In-Reply-To: <1158333401.286945.147870@b28g2000cwb.googlegroups.com>
References: <mailman.125.1158327884.10491.python-list@python.org>
	<37zOg.1954$vD2.787@tornado.texas.rr.com>
	<1158333401.286945.147870@b28g2000cwb.googlegroups.com>
Message-ID: <16651e80609150839s3cb6e8f8na1fdcf44d1c2feb3@mail.gmail.com>

On 15 Sep 2006 08:16:41 -0700, John Machin <sjmachin at lexicon.net> wrote:
> C:\junk>python -mtimeit -s"BLACK=(0,0,0);rgb=(1,1,1)" "rgb==BLACK"
> 1000000 loops, best of 3: 0.129 usec per loop
>
> C:\junk>python -mtimeit -s"rgb=(1,1,1)" "rgb==(0,0,0)"
> 1000000 loops, best of 3: 0.127 usec per loop

Surprisingly (to me), hand splitting the tuple and doing short circuit
comparisons is slightly faster than either of those:

C:\Python25>python -mtimeit -s"BLACK=(0,0,0);rgb=(1,1,1)" "rgb==BLACK"
10000000 loops, best of 3: 0.18 usec per loop

C:\Python25>python -mtimeit -s"rgb = (1,1,1)" "rgb == (0,0,0)"
10000000 loops, best of 3: 0.169 usec per loop

C:\Python25>python -mtimeit -s"rgb = (1,1,1)" "rgb[0] == 0 and rgb[1]
== 0 and rgb[2] == 0"
10000000 loops, best of 3: 0.158 usec per loop

It probably has to do with not needing to find the len of the tuple
each time you compare.

I agree with Paul's earlier statement that there's probably a better
way to do this through PIL.  I've read through the PIL docs, but I'm
afraid I'm running into problems caused by my own ignorance. It seems
like I should be able to do something with Image.eval(), the point()
method or one of the PIL filters, but I don't understand them well
enough.  I'll take a look through the source, and if that doesn't help
I'll take this to the PIL list to get some further feedback on how
those work.

-- 
Jerry


From maric at aristote.info  Wed Sep  6 11:44:42 2006
From: maric at aristote.info (Maric Michaud)
Date: Wed, 6 Sep 2006 17:44:42 +0200
Subject: change property after inheritance
In-Reply-To: <V_ALg.10274$YZ3.7565@trnddc03>
References: <V_ALg.10274$YZ3.7565@trnddc03>
Message-ID: <200609061744.44374.maric@aristote.info>

Le mercredi 06 septembre 2006 16:33, David Isaac a ?crit?:
> Suppose a class has properties and I want to change the
> setter in a derived class. If the base class is mine, I can do this:
> http://www.kylev.com/2004/10/13/fun-with-python-properties/
> Should I? (I.e., is that a good solution?)

Why not ? This ontroduce the notion of public getter a la C++/Java while the 
property is overloadable by itself (as below), but it's correct design IMHO.

> And what if I cannot change the base class?
> How to proceed then?

Like that :

In [44]: class a(object) :
   ....:     p=property(lambda s : getattr(s, '_p', None))
   ....:
   ....:

In [46]: class b(a) :
   ....:     p=property(a.p.fget, lambda s, v : setattr(s, '_p', v))
   ....:
   ....:

In [47]: print a().p
None

In [48]: a().p = 5
---------------------------------------------------------------------------
exceptions.AttributeError                            Traceback (most recent 
call last)

/home/maric/<ipython console>

AttributeError: can't set attribute

In [49]: ib=b()

In [50]: print ib.p
None

In [51]: ib.p = 5

In [52]: print ib.p
5

In [53]: ib._p
Out[53]: 5


-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From gal.diskin at gmail.com  Tue Sep 26 09:29:17 2006
From: gal.diskin at gmail.com (Gal Diskin)
Date: 26 Sep 2006 06:29:17 -0700
Subject: threading, subprocesses and wait
Message-ID: <1159277357.156624.115740@b28g2000cwb.googlegroups.com>

Hi all,
I'm writing a python program using threads to open several subprocesses
concurrently (using module subprocess) and wait on them. I was
wondering if there is a possibilty that a thread will return from wait
even though the subprocess that finished was created by another thread
thats also waiting.

i.e. - 2 threads, each thread opens a subprocess and waits. The
subprocess created by thread 1 has ended and thread 2 is released from
wait instead of thread 1. Is this scenario possible? (I have reason to
believe this has happend to me, but it seems unreasonable behaviour)

Thanks in advance,
Gals



From podi.ex at gmail.com  Thu Sep 28 12:45:51 2006
From: podi.ex at gmail.com (Podi)
Date: 28 Sep 2006 09:45:51 -0700
Subject: ctypes pointer to pointer
References: <1159408723.560232.142160@i42g2000cwa.googlegroups.com>
	<mailman.867.1159425805.10491.python-list@python.org>
Message-ID: <1159461951.310300.94380@m7g2000cwm.googlegroups.com>

Thanks for the help. I've figured it out. BTW, DLL_API is defined as

#ifdef MYDLL_EXPORTS
#define DLL_API __declspec(dllexport)
#else
#define DLL_API __declspec(dllimport)
#endif


size = c_int()
data = c_char_p('\0' * 8)
mydll = cdll.mydll # Use cdll instead of windll to avoid warnings
status = mydll.dll_foo(byref(data), byref(size))



From cozmo at nospam.oslo.online.no  Tue Sep  5 05:31:37 2006
From: cozmo at nospam.oslo.online.no (Peter Møllerud)
Date: Tue, 5 Sep 2006 11:31:37 +0200
Subject: Minidom XML output - attributes in wrong order ?
Message-ID: <776dneNzoZJh3mDZRVn_vA@telenor.com>

I'm very new to Python, so consider this a silly newbie question...
Anyway, I'm building a small application to generate a XML. Using document 
from minidom, I'm doing something like :

from xml.dom.minidom import Document

doc = Document()

c = doc.createElement("sometest")
doc.appendChild(c)
tmp = doc.createElement("info")
tmp.setAttribute("vehicle", "car")
tmp.setAttribute("x-ray ", "100-1")
tmp.setAttribute("age", "30")
c.appendChild(tmp)
print doc.toprettyxml(indent="  ")

What it then prints out is :

<?xml version="1.0" ?>
<sometest>
  <info age="30" vehicle="car" x-ray ="100-1"/>
</sometest>

What I expected was : <info vehicle="car" x-ray="100-1" age="30"/>

So it seems the dom module sorts the attributes alphabetically. Is there any 
way I can prevent it from doing that ? What I want is to list them out in 
the same order as they are added in the code...

Thanks,

Peter 




From gandalf at designaproduct.biz  Wed Sep 13 13:29:32 2006
From: gandalf at designaproduct.biz (Laszlo Nagy)
Date: Wed, 13 Sep 2006 19:29:32 +0200
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
Message-ID: <45083FFC.9000200@designaproduct.biz>

John Henry ?rta:
> Hi list,
>
> Just to make sure I understand this.
>
> Since there is no "pointer" type in Python, I like to know how I do
> that.
>
> For instance, if I do:
>
>    ...some_huge_list is a huge list...
>    some_huge_list[0]=1
>    aref = some_huge_list
>    aref[0]=0
>    print some_huge_list[0]
>
> we know that the answere will be 0.  In this case, aref is really a
> reference.
>
> But what if the right hand side is a simple variable (say an int)?  Can
> I "reference" it somehow?  Should I assume that:
>
>    aref = _any_type_other_than_simple_one
>
> be a reference, and not a copy?
>   
The short answer is that you need to keep the immutable value inside a 
mutable object.

The long answer:

a.) You can reference the immutable object just like any object, but you 
cannot change the immutable object. For instance, when you do

a = 1
a += 2

then you are rebinding the variable 'a' to a different object (namely, 
the 2 int object.)

b.) You can however, keep a reference to your current immutable object 
inside a mutable object. In many cases, the mutable object will be a 
namespace dictionary.

A module is a very simple example:

a = 1
def f1():
    global a
    a += 1

def f2():
    global a
    a += 10

f1()
f2()
print a # prints 12

Notice that the "a+=10" will actually rebind the variable to a different 
object.

In other cases, you will be using an object or a class:

class A(object):
    a = 5

def inc_id(obj):
    obj.id += 1

a = A() # a.id is 5 here
a.id = 4 # makes a.id a reference to 4
inc_id(a) # makes a.id a reference to 5 again


Best,

  Laszlo



From jg307 at cam.ac.uk  Sun Sep 24 12:27:20 2006
From: jg307 at cam.ac.uk (James Graham)
Date: Sun, 24 Sep 2006 17:27:20 +0100
Subject: RSS aggregator with curses and feedparser
In-Reply-To: <1159109024.989058.300310@h48g2000cwc.googlegroups.com>
References: <1159105479.747450.222690@d34g2000cwd.googlegroups.com>
	<1159109024.989058.300310@h48g2000cwc.googlegroups.com>
Message-ID: <0tadnRh6O4qkL4vYnZ2dnUVZ8qqdnZ2d@pipex.net>

Roberto Bechtlufft wrote:
> And another thing: feedparser returns the result entries as
> dictionaries. What's the best approach to create my cache file? I see
> that the cache file in liferea is an xml file. Should I try to create
> my own xml file based on the results from feedparser?

Well you could do, using elementtree or whatever but there's no 
particular reason to use XML over anything else. It's semi-human 
readable which is nice but, if you're just serializing dicts some json 
library (e.g. [1]) might do all you need out of the box. Alternatively, 
if you don't care about the local format being human-readable, you could 
simply use the built-in pickle module to save your state.

> Thanks for your help.

(note that people tend to dislike top posting because, as you can see, 
it tends to screw up the order of replies).

> Roberto Bechtlufft wrote:
>
>> A question: how do I tell my program that a certain entry was/wasn't
>> downloaded yet? Should I use the date or link tag of the entry?
> 
Assuming the feed is atom, you want to look at the entry's GUID to 
determine whether you have already downloaded it. That may also work for 
RSS feeds although I'm not sure how well RSS feeds in the wild stick to 
the "Globally Unique" part of GUID... but this is more of a feed 
handling question than a python one.

[1] http://cheeseshop.python.org/pypi/python-json/


From robert.kern at gmail.com  Fri Sep 22 17:46:36 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 22 Sep 2006 16:46:36 -0500
Subject: Building things with setup.py
In-Reply-To: <VrXQg.3935$IA.1598@newssvr11.news.prodigy.com>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>	<mailman.438.1158898433.10491.python-list@python.org>	<c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>	<mailman.471.1158947946.10491.python-list@python.org>
	<VrXQg.3935$IA.1598@newssvr11.news.prodigy.com>
Message-ID: <ef1ljo$n7k$1@sea.gmane.org>

James Stroud wrote:
> Robert Kern wrote:
>>> Sorry. To clarify, making libpython2.5a available in a 
>>> $LD_LIBRARY_PATH was necessary to build numpy and scipy.
>> I don't see how that could have affected anything. Static libraries 
>> aren't looked up in $LD_LIBRARY_PATH. Certainly not for build-time linking.
> 
> OK--new thing learned for the day. <rant>I try things until a build 
> works. I consider everything I do until acquiring a working build as 
> necessary. Going back to see exactly what I did to make things work is 
> not a viable option given that every new program I want requires my 
> building it and all of its dependencies--a consequence of the [adjective 
> deleted] beuracratic constraints (with regard to the machine on my 
> desktop) that have evolved here. These constraints are no doubt a 
> byproduct of the "Institute" part of my signature below, associated 
> paranoia, and over-worked sys-admins.</rant>

:-) I've always thought that a Kubuntu LiveCD would be a useful path around much 
of that nonsense, but I've fortunately not been forced to attempt it.

>> What do your environment variables look like when you build?
> 
> euler 2% echo $CPPFLAGS
> -I/data10/users/jstroud/Programs/include 
> -I/data10/users/jstroud/Programs/qt/include -I/usr/include 
> -I/data10/users/jstroud/Programs/include/freetype2/freetype
> euler 3% echo $LD_LIBRARY_PATH
> /data10/users/jstroud/Programs/lib:/data10/users/jstroud/Programs/qt/lib:/usr/lib:/usr/X11R6/lib/:/usr/local/lib:/usr/lib/gcc-lib/i386-redhat-linux/3.2.3:/data10/users/jstroud/Programs/ccp4-5.0.2/lib
> euler 4% echo $LDFLAGS
> -L/data10/users/jstroud/Programs/lib 
> -L/usr/lib/gcc-lib/i386-redhat-linux/3.2.3

Okay, this is possibly part of the problem. numpy.distutils handles FORTRAN code 
differently than other extension modules; this is why pure C extension modules 
both inside numpy and elsewehere were linking fine. Try unsetenving $CPPFLAGS 
and $LDFLAGS and adding those arguments to build_ext, if necessary.

Looking on line 516 of numpy/fcompiler/__init__.py (why there's a class 
definition in __init__.py, I'll never know), it does look like the linker flags 
which are carefully constructed by numpy.distutils are indeed overridden by the 
user's setting of $LDFLAGS.

The fact that this appears to be incompatible with how distutils does it for 
everything else is a bug, IMO, although it *is* a useful feature if you really 
do need to completely control the linker flags. That's probably what the 
implementor was thinking. Although, sadly, not documenting. He should be back 
from his honeymoon, now, so I'll raise the issue with him.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From jon+usenet at unequivocal.co.uk  Tue Sep 26 09:19:33 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 13:19:33 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
Message-ID: <slrnehia6n.9o0.jon+usenet@snowy.squish.net>

In article <mailman.672.1159275735.10491.python-list at python.org>, Fredrik Lundh wrote:
>> This has nothing to do with character encodings.
> 
> it has *everything* to do with encoding of existing data into HTML
> so it can be safely transported to, and recreated by, an HTML-aware
> client.

I can't tell if you're disagreeing or not. You escape the character
"<" as the sequence of characters "&lt;", for example, because
otherwise the HTML user agent will treat it as the start of a tag and
not as character data. You will notice that the character encoding is
utterly irrelevant to this.

> does the word "information set" mean anything to you?

You would appear to be talking about either game theory, or XML,
neither of which have anything to do with HTML.


From ironfroggy at gmail.com  Mon Sep 18 16:05:00 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 16:05:00 -0400
Subject: Cross-process dictionary/hashtable
In-Reply-To: <1158608672.610841.271530@b28g2000cwb.googlegroups.com>
References: <1158608672.610841.271530@b28g2000cwb.googlegroups.com>
Message-ID: <76fd5acf0609181305w136aabbejb493e1982e38db86@mail.gmail.com>

On 18 Sep 2006 12:44:32 -0700, Sandra-24 <sandravandale at yahoo.com> wrote:
> A dictionary that can be shared across processes without being
> marshaled?
>
> Is there such a thing already for python?
>
> If not is there one for C maybe?
>
> I was just thinking how useful such a thing could be. It's a great way
> to share things between processes. For example I use a cache that
> subclasses a dictionary. It would be trivial to modify it to work
> across processes by changing the base class and the locking mechanism.
>
> Thanks,
> -Sandra

Maybe what you want is something like memcache
(http://cheeseshop.python.org/pypi/memcached), which offers a basic
in-memory, key-value share that processes (even on different boxes)
can connect to. Of course, as with any kind of concurrent work, its
going to be far easier to have some restrictions, which memcache has.
For example, full python objects being shared isn't a great idea, or
even possible in many situations. The closest you could get with
something like memcache is to wrap it up in a dictionary-like object
and have it pickle things coming in and out, but that won't work for
everying and has security concerns.


From steve at holdenweb.com  Tue Sep 19 08:53:31 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 08:53:31 -0400
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <450FDFD6.5050601@gmail.com>
References: <450FDFD6.5050601@gmail.com>
Message-ID: <eeop6s$j0$2@sea.gmane.org>

Nico Grubert wrote:
> Hi there,
> 
> I'd like to install Python 2.3.5. on a 64-Bit OS (Suse Linux Enterprise 
> Server 10) on an AMD Opteron 64-Bit machine.
> I have to use Python 2.3.5.
> 
> Do I need a special source archive or can I use "Python-2.3.5.tgz" from 
> http://www.python.org/ftp/python/2.3.5/Python-2.3.5.tgz ?
> 
> Is there anything special I have to care about or is installing Python 
> on a 64 Bit OS just as easy as installing it on a 32-Bit OS?
> 
More recent versions of Python have incorporated much more support for 
64-bit architectures. 2.5 is about to be released (I believe it should 
be out in the next 24 hours), and I'd recommend that over the older 
version you are considering.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From stateroad at gmail.com  Wed Sep  6 13:08:55 2006
From: stateroad at gmail.com (Marshall)
Date: 6 Sep 2006 10:08:55 -0700
Subject: Secure Postgres access
In-Reply-To: <7xbqpthsag.fsf@ruckus.brouhaha.com>
References: <pan.2006.09.06.16.21.55.818191@reidster.net>
	<7xbqpthsag.fsf@ruckus.brouhaha.com>
Message-ID: <1157562535.569265.218830@b28g2000cwb.googlegroups.com>

Can't you limit SSH tunneling access to the IP and/or MAC that you want
to access ? It's simplest than any other solution.



From danny_milo at yahoo.com  Sat Sep  2 12:45:26 2006
From: danny_milo at yahoo.com (Danny Milosavljevic)
Date: Sat, 2 Sep 2006 16:45:26 +0000 (UTC)
Subject: Zipping Files to user defined Directory
References: <1154055565.502991.252710@p79g2000cwp.googlegroups.com>
	<pan.2006.07.28.06.27.16.298283@gmx.net>
	<1154089537.978708.274040@b28g2000cwb.googlegroups.com>
Message-ID: <newscache$p04z4j$y91$1@news.liwest.at>

Hi,

On Fri, 28 Jul 2006 05:25:38 -0700, OriginalBrownster wrote:

> Marc 'BlackJack' Rintsch wrote:
>> In <1154055565.502991.252710 at p79g2000cwp.googlegroups.com>,
>> OriginalBrownster wrote:
>>
[...]
>> After the user selected the files you have to zip them on the server,
>> for instance in a temporary in the `/tmp/` directory and then deliver
>> that archive to the user.
>>
>> Ciao,
>> 	Marc 'BlackJack' Rintsch
> 
> 
> THanks Marc,
> 
> That makes sense. I can zip the files to a temp directory. However, How
> do I deliver the archive to them?...

Like you deliver any other content in a cgi (assuming you are using a cgi):
By printing in on standard output.

I don't know "TurboGears" though.

cheers,
  Danny


From horpner at yahoo.com  Thu Sep  7 16:32:34 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 7 Sep 2006 22:32:34 +0200
Subject: Positive lookahead assertion
References: <45006ede$0$19734$88260bb3@free.teranews.com>
	<1157660939.252322.135820@e3g2000cwe.googlegroups.com>
Message-ID: <slrneg10fk.1mo.horpner@FIAD06.norwich.edu>

On 2006-09-07, Paddy <paddy3118 at netscape.net> wrote:
> tobiah wrote:
>> (?=...)
>> Positive lookahead assertion. This succeeds if the contained
>> regular expression, represented here by ..., successfully
>> matches at the current location, and fails otherwise. But,
>> once the contained expression has been tried, the matching
>> engine doesn't advance at all; the rest of the pattern is
>> tried right where the assertion started.
>>
>> I am unable to wrap my mind around this sentence.  Could
>> someone give me an example of how this works, and why it would
>> be useful?
>
> Its all about context. If you want to match something but only
> if it precedes something else, then you follow the regular
> expression for 'something' by the regular expression for
> 'something else' where `something else` is enclosed by (?=...)
>
> The regular expression engine will surreptitiously check that
> 'something else' does indeed follow, before returning any match of
> 'something'.

At any rate it further blurs the line between parsing and
pattern-matching. ;)

-- 
Neil Cerutti


From skip at pobox.com  Tue Sep 26 16:11:26 2006
From: skip at pobox.com (skip at pobox.com)
Date: Tue, 26 Sep 2006 15:11:26 -0500
Subject: Whither binary search?
In-Reply-To: <y4fSg.1876$5i7.112@newsreading01.news.tds.net>
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
	<mailman.722.1159296789.10491.python-list@python.org>
	<y4fSg.1876$5i7.112@newsreading01.news.tds.net>
Message-ID: <17689.35182.132260.719416@montanaro.dyndns.org>


    Neil> On 2006-09-26, skip at pobox.com <skip at pobox.com> wrote:
    >> bisect...

    Neil> That doesn't tell me if an item doesn't exist in the sequence
    Neil> though, does it?  Maybe I'm being dense.

    Neil> My guess nobody keeps their sequences sorted in Python. ;)

Sorry, I was on the phone as I replied, and was only typing with my left
hand, so my response was intentionally very brief. ;-)

If you use bisect to do your insertions, your lists remain sorted.  And as
for searching, all you have to do is look to the left or the right of the
insertion point (depending on which search method you call) to determine if
the item you're searching for is in the list.

Skip


From brian at sweetapp.com  Mon Sep 25 13:11:18 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Mon, 25 Sep 2006 19:11:18 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehg086.7sa.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>	<mailman.579.1159199258.10491.python-list@python.org>	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>	<mailman.581.1159200379.10491.python-list@python.org>
	<slrnehg086.7sa.jon+usenet@snowy.squish.net>
Message-ID: <45180DB6.8090504@sweetapp.com>

Jon Ribbens wrote:
> In article <mailman.581.1159200379.10491.python-list at python.org>, Fredrik Lundh wrote:
>>> It's up to me to decide whether or not an argument is good enough to
>>> convince me, thank you very much.
>> not if you expect anyone to take anything you say seriously.
> 
> Now you're just being ridiculous. In this thread you have been rude,
> evasive, insulting, vague, hypocritical, and have failed to answer
> substantive points in favour of sarcastic and erroneous sniping - I'd
> suggest it's you that needs to worry about being taken seriously.

Actually, at least in the context of this mailing list, Fredrik doesn't 
have to worry about that at all. Why? Because he is one of the most 
prolific contributers to the Python language and libraries and his 
contributions have been of consistent high quality.

You, on the other hand, are "just some guy" and people don't have a lot 
of incentive to convince you of anything.

I have no opinion on the actual debate though. Just trying to help with 
the social analysis :-)

Cheers,
Brian


From sjmachin at lexicon.net  Tue Sep 26 05:35:09 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 02:35:09 -0700
Subject: Printing a percent sign
In-Reply-To: <efaq7s$rfd$6@lust.ihug.co.nz>
References: <1159216705.649649.116260@d34g2000cwd.googlegroups.com>
	<1159217483.513555.126120@e3g2000cwe.googlegroups.com>
	<1159230293.270822.50390@d34g2000cwd.googlegroups.com>
	<efaq7s$rfd$6@lust.ihug.co.nz>
Message-ID: <1159263309.699677.301130@m7g2000cwm.googlegroups.com>


Lawrence D'Oliveiro wrote:
> In message <1159230293.270822.50390 at d34g2000cwd.googlegroups.com>, John
> Machin wrote:
>
> > 1. Reasoning: How do you get a literal "'" into an SQL string constant?
> > How do you get a literal "\" into a Python string constant? How do you
> > get a literal "$" into some *x shell command lines? Do you detect a
> > pattern?
>
> None of which applies to escaping of % characters in format strings.

What I had in mind was:

where surname = 'O''REILLY'
install_dir = "C:\\Python25"
...
print "The interest rate is %.2f%% p.a." % (rate * 100.0)

the common pattern being that the problem character is doubled.



From mahs at telcopartners.com  Wed Sep  6 17:35:03 2006
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 06 Sep 2006 14:35:03 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157570766.122071.27250@h48g2000cwc.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>	<mailman.86.1157565197.5279.python-list@python.org>	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>
	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>
Message-ID: <ednf1r$612$1@sea.gmane.org>

lh84777 at yahoo.fr wrote:
> actually for the example i have used only one sentry condition by they
> are more numerous and complex, also i need to work on a huge amount on
> data (each word are a line with many features readed from a file)
An open (text) file is a line-based iterator that can be fed directly to 
'chunker'.  As for different sentry conditions, I imagine they can be coded in 
either model. How much is a 'huge amount' of data?

> oops
> 
>> to have:
>>
>> this .
>> this . is a .
>> this . is a . test to .
>> is a . test to . check if it .
>> test to . check if it . works .
>> check if it . works . well .
>> works . well . it looks like .
> well . it looks like .
> it looks like .
> 
Here's a small update to the generator that allows optional handling of the head 
and the tail:

def chunker(s, chunk_size=3, sentry=".", keep_first = False, keep_last = False):
     buffer=[]
     sentry_count = 0

     for item in s:
         buffer.append(item)
         if item == sentry:
             sentry_count += 1
             if sentry_count < chunk_size:
                 if keep_first:
                     yield buffer
             else:
                 yield buffer
                 del buffer[:buffer.index(sentry)+1]

     if keep_last:
         while buffer:
             yield buffer
             del buffer[:buffer.index(sentry)+1]


 >>> for p in chunker(s.split(), keep_first = True, keep_last=True): print " 
".join(p)
...
this .
this . is a .
this . is a . test to .
is a . test to . check if it .
test to . check if it . works .
check if it . works . well .
works . well . it looks like .
well . it looks like .
it looks like .
 >>>



From st at tobiah.org  Thu Sep  7 16:18:04 2006
From: st at tobiah.org (tobiah)
Date: Thu, 07 Sep 2006 13:18:04 -0700
Subject: Positive lookahead assertion
In-Reply-To: <45006ede$0$19734$88260bb3@free.teranews.com>
References: <45006ede$0$19734$88260bb3@free.teranews.com>
Message-ID: <45007163$0$19744$88260bb3@free.teranews.com>

Sorry, I should have tried harder.  I see that the text
of the match is simply not consumed, so that:

	m = re.search('(?=foo)fo', 'food')

succeeds, while

	m = re.search('(?=fox)fo', 'food')

does not.



tobiah wrote:
> (?=...)
> Positive lookahead assertion. This succeeds if the contained regular 
> expression, represented here by ..., successfully matches at the current 
> location, and fails otherwise. But, once the contained expression has 
> been tried, the matching engine doesn't advance at all; the rest of the 
> pattern is tried right where the assertion started.
> 
> I am unable to wrap my mind around this sentence.  Could
> someone give me an example of how this works, and why
> it would be useful?
> 
> Thanks,
> 
> Toby
> 

-- 
Posted via a free Usenet account from http://www.teranews.com



From laurent.pointal at limsi.fr  Mon Sep 11 11:17:19 2006
From: laurent.pointal at limsi.fr (Laurent Pointal)
Date: Mon, 11 Sep 2006 17:17:19 +0200
Subject: best small database?
In-Reply-To: <0rdNg.6440$c22.5757@trnddc07>
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <ee3um4$hq9$1@upsn250.cri.u-psud.fr>

David Isaac a ?crit :
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.
> 
> Suggestions?

May take a look at buzhug (very pythonic way to manipulate data in the
base).

http://buzhug.sourceforge.net/

> 
> Thank you,
> Alan Isaac
> 
> 


From awmcclain.nospam at gmail.com  Wed Sep 27 04:41:12 2006
From: awmcclain.nospam at gmail.com (awmcclain.nospam at gmail.com)
Date: 27 Sep 2006 01:41:12 -0700
Subject: What's the best way to communicate between processes?
Message-ID: <1159346472.574859.64130@i42g2000cwa.googlegroups.com>

Here's my situation:

I'm writing a simple reminder bot which will IM me based on input from
a web server. Right now, I have a simple AIM bot written using twisted
2 words. It logs into AIM and can send/receive messages. There's part
1.

I have a django server running under mod_python through apache, which
is my web server. Part 2.

How do I get part 2 to talk to part 1?? Ideally I'd like to fire off a
(signal/message/data) from mod_python to a separate process running the
twisted AIM bot, so that the mod_python thread(s) can just forget about
the whole thing and let someone else deal with talking with AIM.

I can't really just include the twisted AIM bot from django, because
mod_python (as I understand it) runs different requests on different
threads, and I don't want to spawn a bot and log into IM each request.
I can't run the whole thing through twisted, either.

I'm thinking about coding some sort of 'local notify server' in twisted
(basically just listening to a socket and then passing the information
to the IM bot), then connecting to it via a python socket in django and
passing some serialized/pickled data. I worry about two requests
connecting to the 'notify server' at once, though, because i *cannot*
hang my web server.

Thoughts? Is there a better solution? Is there a simpler way to do this
(a way with built-in serialization?)

Thanks for any help.



From duncan.booth at invalid.invalid  Tue Sep 26 03:00:09 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 07:00:09 GMT
Subject: A critique of cgi.escape
References: <4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<mailman.570.1159194107.10491.python-list@python.org>
	<efa7ff$pr2$2@lust.ihug.co.nz>
Message-ID: <Xns984A4F58773F1duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

>> (cgi.escape(s, True) is slower than cgi.escape(s), for reasons that
>> are obvious for anyone who's looked at the code).
> 
> What you're doing is adding to the reasons why the existing cgi.escape
> function is stupidly designed and implemented. The True case is by far
> the most common, so to make that the slow case, as well as being the
> non-default case, is doubly brain-dead.

It is slightly slower because it does more. Both cases are about 15 times 
faster than the regular expression implementation someone posted to this 
thread yesterday.


From breakfastea at gmail.com  Fri Sep 22 02:54:34 2006
From: breakfastea at gmail.com (Camellia)
Date: 21 Sep 2006 23:54:34 -0700
Subject: How to return an "not string' error in function?
In-Reply-To: <4512e29c$0$32387$636a55ce@news.free.fr>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
	<71oau3-vr5.ln1@lairds.us>
	<1158855308.877117.187050@b28g2000cwb.googlegroups.com>
	<4512bcaf$0$609$636a55ce@news.free.fr>
	<1158856111.375288.216950@h48g2000cwc.googlegroups.com>
	<4512e29c$0$32387$636a55ce@news.free.fr>
Message-ID: <1158908074.409749.177190@b28g2000cwb.googlegroups.com>

I've learned a lot from you two, thank you:)

Peace



From ajones1 at gmail.com  Fri Sep  8 19:24:26 2006
From: ajones1 at gmail.com (Adam Jones)
Date: 8 Sep 2006 16:24:26 -0700
Subject: Building Python Based Web Application
In-Reply-To: <1157755872.665137.230470@m73g2000cwd.googlegroups.com>
References: <OskMg.9529$yO7.77@newssvr14.news.prodigy.com>
	<mailman.183.1157752647.5279.python-list@python.org>
	<1157755872.665137.230470@m73g2000cwd.googlegroups.com>
Message-ID: <1157757866.251475.216080@m79g2000cwm.googlegroups.com>


John Henry wrote:
> Hi folks.
>
> I am interested on this topic as well.
>
> If my application is not database related, what would be a good choice?
>
> I have clients that wish to use my Python applications but I am not
> willing to give them the code.  So, I am thinking about setting it up
> as a web based application and let them run it from their browser.   If
> things go well, may be I can charge them for usage later.
>
> The application will involve getting a data file from the user, do some
> processing, and return a result file to the user.   Very modest - to
> start.

For that kind of usage I don't know if any of the big name web
frameworks would be worth the effort, especially if returning a result
file entails making it available for download instead of handing it
back in the form of an HTML page. At that point all you would really
need is a controller to handle most of the details of working in HTTP
and maybe a templating system to help out with the HTML.

The only controller that is available independently that I can comment
on usefully is Cherrypy. It works pretty well, can run its own web
server if you like, and seems like it would be simple enough to use for
what you are talking about.

Without knowing more about your requirements that would be my
suggestion. I am sure there are other people on this group with more
experience here who could give more useful commentary.

-Adam



From JoReiners at gmail.com  Mon Sep 11 07:48:25 2006
From: JoReiners at gmail.com (JoReiners)
Date: 11 Sep 2006 04:48:25 -0700
Subject: strange DOM behaviour when using minidom
Message-ID: <1157975305.446291.37620@h48g2000cwc.googlegroups.com>

Hello, I have a really strange problem. I'm unable to figure it out on
my own.

I parse very simple xml documents, without any check for their form.
These files look very similar and are encoded in UTF-8.

Now minidom is always able to parse these files with
minidom.parse("file") .
Now when fetching I use this expression:
xmldoc.getElementsByTagName('DocNumb')[0].firstChild.data.encode('latin1')

(I know it's not beautiful but convenient. )

It always work, but sometimes it simply fails to fetch any element.
Redoing it from hand in the python console with the same file always
works.

I have no idea what the error is. I compared working and not working
files with the hex editor. I couldn't find any significant change. It's
too strange. If anybody has any clue, hint or anything, please let me
know.

Regards, Jonatan



From mario.lacunza at gmail.com  Sat Sep  9 01:03:06 2006
From: mario.lacunza at gmail.com (Mario Lacunza)
Date: Sat, 09 Sep 2006 00:03:06 -0500
Subject: Problems with PyGridTableBase
Message-ID: <1157778187.7961.6.camel@localhost>


Hello,

I attach two files:frmClientes and frmClientesNE.

frmClientes charge a Grid with resume Costumers data: Name, Commercial
ID, address, etc. and edition options.

frmClientes in 

Line 178
def OnBtnNuevoButton(self, event):

call to frmClientesNE. Its append a new record to the database and clear
all controls and when I close it, the grid in frmClientes: grClte must
be recharge with the new data, but that dont work. Only work when a
Delete some record.

I couldnt send yours a runable .py version, because both of them files
pickup data from a Firebird's database. 

I try to implement the wxPython Demo model: Grid_MegaExample, follow
that my class Grilla must be:

Line 224:
class Grilla(Grid.Grid):

but for the Boa Constructors controls creation I couldnt inherit from
Grid.Grid, thats my problem, I need your help I try for two days and
nothing :-( ... some ideas??

Thanks in advance!!


-- 
Mario Lacunza <mario.lacunza at gmail.com>
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From sxn02 at yahoo.com  Thu Sep 21 18:36:11 2006
From: sxn02 at yahoo.com (Sorin Schwimmer)
Date: Thu, 21 Sep 2006 15:36:11 -0700 (PDT)
Subject: overrideredirect and Text widget
Message-ID: <20060921223611.88839.qmail@web56010.mail.re3.yahoo.com>

Hi,

I'm trying to place in an undecorated window a Text widget, and a button to close the window/save widget's content. My test code is the following:

<code>

from Tkinter import *

root=Tk()

root['bg']='' # transparent background
root.overrideredirect(1) # get rid of border
root.geometry("+80+120") # place on screen

root.focus_set() # take focus

bt=Button(text="End",command=root.quit)
bt.grid(row=0, stick=E) # a button to allow window's closure
tx=Text(bg='white',height=3)
tx.grid() # a text widget
tx.focus() # give focus to text

root.mainloop()

</code>

On my machine it doesn't give focus to Text. Any advice?

Thanks,
Sorin

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From eurleif at ecritters.biz  Wed Sep 27 19:43:50 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Wed, 27 Sep 2006 19:43:50 -0400
Subject: Auto color selection PIL
In-Reply-To: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>
References: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>
Message-ID: <451b0c80$0$25785$4d3efbfe@news.sover.net>

Xiaolei wrote:
> I'm trying to plot some points in an image.  Each point has an
> associating type and I'd like to have different colors (preferrably of
> high contrast) for different types.  The number of types in the data
> file is unknown a priori.  Is there a way to do this at runtime?

If you don't know how many colors are needed even at run time, this code 
might be helpful. But it generates colors that look similar pretty 
quickly, so I wouldn't use it unless you have to. (Anyone know of a 
better algorithm for this?)

from itertools import count
from colorsys import hsv_to_rgb

def hues():
     yield 0.0
     for i in count():
         for j in xrange(2**i):
             yield (1.0 / 2**(i+1)) + ((1.0 / 2**i) * j)

def colors():
     for hue in hues():
         r, g, b = hsv_to_rgb(hue, 1.0, 1.0)
         yield int(r*255), int(g*255), int(b*255)


From gatti at dsdata.it  Tue Sep 12 06:06:05 2006
From: gatti at dsdata.it (gatti at dsdata.it)
Date: 12 Sep 2006 03:06:05 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158054367.602210.185360@h48g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158033946.844515.13360@m73g2000cwd.googlegroups.com>
	<1158050200.072785.11320@m73g2000cwd.googlegroups.com>
	<1158054367.602210.185360@h48g2000cwc.googlegroups.com>
Message-ID: <1158055565.311523.186550@e3g2000cwe.googlegroups.com>


Licheng Fang wrote:

> Another question: my task is to find in a given string the substrings
> that satisfies a particular pattern. That's why the first tool that
> came to my mind is regular expression. Parsers, however, only give a
> yes/no answer to a given string. To find all substrings with a
> particular pattern I may have to try every substring, which may be an
> impossible task.

You can collect all successful parser results beginning from each index
in the string; this gives you all matches with that first index.
You could extend to multiple results general bottom-up context-free
language parsing like Earley or Tomita's algorithms; for reasonable
languages most locations can be excluded for most rules at the
beginning, with great performance improvements over trying over and
over again.

Lorenzo Gatti



From srikrishnamohan at gmail.com  Mon Sep 11 09:29:48 2006
From: srikrishnamohan at gmail.com (km)
Date: Mon, 11 Sep 2006 18:59:48 +0530
Subject: best small database?
In-Reply-To: <0rdNg.6440$c22.5757@trnddc07>
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <f4cc03640609110629p57900f59ve4163eeef6050e2a@mail.gmail.com>

checkout gadfly database.
regards,
KM

On 9/11/06, David Isaac <aisaac0 at verizon.net> wrote:
>
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
>
> I would like a pure Python solution to the extent reasonable.
>
> Suggestions?
>
> Thank you,
> Alan Isaac
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 16:36:57 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 22:36:57 +0200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<1158938953.622976.184960@i3g2000cwc.googlegroups.com>
	<1158942134.691147.308530@i42g2000cwa.googlegroups.com>
	<4nihfbFa61lsU1@individual.net>
	<1158943743.930685.106630@m73g2000cwd.googlegroups.com>
Message-ID: <4nivr5Fan2s7U2@individual.net>

Saizan wrote:

> Thanks for pointing that out ( the "!" is a misstyped "|"), 

Ah, I suspected so.

> my classes of discrete math have warped my mind with a mix of
> various non-C-style operators notation, I never use bitwise
> operation and this is just a bad day for thinking about things..

Hehe, I know those days ;)

> However I figured out one thing, Python's logic notation is
> readable and complete but not  compact. (which is fine for
> programming, and that's the aim, isn't it?)

Depends. IMHO, readability is fine for programming. In my C++ code,
it happens so often that I forget or overread a "!". And if I want
to understand my functions later on, my brain quite wrinkles
looking at parentheses, !s, &&s and ||s.

Regards,


Bj?rn

-- 
BOFH excuse #313:

your process is not ISO 9000 compliant



From 71david at libero.it  Fri Sep  8 04:06:02 2006
From: 71david at libero.it (David)
Date: Fri, 8 Sep 2006 10:06:02 +0200
Subject: wxPython: StaticText Event
References: <1tc3u13of270z$.xses1l1wwdc6.dlg@40tude.net>
	<edqdn5$2bn7$1@talisker.lacave.net>
Message-ID: <9y92nlp1ny1e.vvt70dphfyag$.dlg@40tude.net>

Il Fri, 08 Sep 2006 02:32:41 +0200, Amaury Forgeot d'Arc ha scritto:

> I quick Google search found the following thread:
> 
> http://lists.wxwidgets.org/archive/wx-users/msg31855.html
> or
> http://lists.wxwidgets.org/archive/wx-users/msg31983.html
> 
> It suggest that you use another kind of control instead.
> Is a disabled TextCtrl acceptable?
> 
> Hope this helps,
Yes, it does! Thankyou!

Best regards

David


From XX.XmcX at XX.XmclaveauX.com  Fri Sep 29 06:38:42 2006
From: XX.XmcX at XX.XmclaveauX.com (MC)
Date: Fri, 29 Sep 2006 12:38:42 +0200
Subject: windev vs python SOS
References: <nXzSg.195$nn3.31@nntpserver.swip.net>
	<mn.e3e87d69cc132392.46195@XX.XmclaveauX.com>
	<1159493184.914483.20320@i3g2000cwc.googlegroups.com>
Message-ID: <mn.eaf67d6931dea308.46195@XX.XmclaveauX.com>

Thank you, Jean-Marc, for translation. I am not capable of this work.

:-)

-- 
@-salutations

Michel Claveau




From fredrik at pythonware.com  Sat Sep 23 15:03:59 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 23 Sep 2006 21:03:59 +0200
Subject: Timeline for Python?
In-Reply-To: <78b3a9580609231103h635eb467o9e85f444fb3e8864@mail.gmail.com>
References: <78b3a9580609231103h635eb467o9e85f444fb3e8864@mail.gmail.com>
Message-ID: <ef40et$845$1@sea.gmane.org>

wesley chun wrote:

>     i cover through 2.5, but also include stuff that have
>     already been slated for 2.6 and 2.7.

and what would that be?  target versions in the PEP:s are usually just 
wild guesses...

</F>



From Maria.Reinhammar at accalon.com  Fri Sep 22 01:56:19 2006
From: Maria.Reinhammar at accalon.com (MaR)
Date: 21 Sep 2006 22:56:19 -0700
Subject: Using py2exe to wrap a service?
In-Reply-To: <1158841361.779918.151010@i3g2000cwc.googlegroups.com>
References: <mailman.397.1158832369.10491.python-list@python.org>
	<1158841361.779918.151010@i3g2000cwc.googlegroups.com>
Message-ID: <1158904579.499584.209530@b28g2000cwb.googlegroups.com>

CONCLUSION:

Tim Golden sent me a patched version of his active_directory.py ver 0.4
and that solved my problem!
Thanks all for your attention and in particular, Tim!
//Maria

111a112
> from win32com.client.gencache import EnsureDispatch
180c181
<     _connection = Dispatch ("ADODB.Connection")
---
>     _connection = EnsureDispatch ("ADODB.Connection")
216c217
<   command = Dispatch ("ADODB.Command")
---
>   command = EnsureDispatch ("ADODB.Command")
419a421
>



From jmpurser at gmail.com  Wed Sep  6 14:46:40 2006
From: jmpurser at gmail.com (John Purser)
Date: Wed, 06 Sep 2006 11:46:40 -0700
Subject: Script Bug?
In-Reply-To: <1157565072.272846.18240@m79g2000cwm.googlegroups.com>
References: <1157565072.272846.18240@m79g2000cwm.googlegroups.com>
Message-ID: <1157568401.5378.10.camel@localhost.localdomain>

On Wed, 2006-09-06 at 10:51 -0700, Omar wrote:
> okay,I'm going through this python tutorial, and according to the
> tutorial, I can type this:
> 
> [code]
> myList = [1,2,3,4]
> for index in range(len(myList)):
>     myList[index] += 1
> print myList
> [/code]
> 
> however, in my IDLE python shell, when I type
> 
> [code]
> >>> myList = [1,2,3,4]
> >>> for index in range(len(myList)):[/code]
> 
> it just gives me a prompt
> [code]
> >>> [/code]
> 
> ?
> 
> why doesn't it just bring me to line three?  I need to have
> persistence, cause little snags like these discourage me.  I know I
> need thicker skin to write code.
> 
> any advice is appreciated
> 

Omar,

The [code] and [/code] tags are markup to tell you where the code starts
and stops. They are not python.  Ignore them.  Type the rest into the
interpreter and see what happens.

John Purser



From fredrik at pythonware.com  Sun Sep  3 05:11:27 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 11:11:27 +0200
Subject: Problem loading true-type font with PIL - "solved"
In-Reply-To: <d8339$44f9b228$54482a8f$32099@news.hispeed.ch>
References: <e3b9a$44f8597f$54482a8f$31423@news.hispeed.ch>
	<d8339$44f9b228$54482a8f$32099@news.hispeed.ch>
Message-ID: <ede67u$at6$1@sea.gmane.org>

Christian Stapfer wrote:

> Problem "solved" by rudely installing PIL 1.1.5 for Windows and
> Python 2.4 from http://www.pythonware.com/products/pil/
> right on top of my existing "Python Enthought Edition--Python
> 2.4.3 for Windows". This might have destroyed the consistency
> of the overall installation, of course. I'm well punished
> for installing Enthought Python 2.4.3: Next time I will again
> install all packages that I need myself, as I did for Python
> 2.3, instead of using a prepackaged distribution like Enthought
> Python.

Since the truetype extension is quite popular, and from what I'm told 
worked just fine in earlier Enthought releases, this is probably just an 
accidental omission.  I'm sure the Enthought people will fix this if you 
report it to them.

</F>



From tundra at tundraware.com  Mon Sep 25 16:34:05 2006
From: tundra at tundraware.com (Tim Daneliuk)
Date: Mon, 25 Sep 2006 15:34:05 -0500
Subject: [ANN] tperimeter 1.110 Released And Available
Message-ID: <45183D3D.1040608@tundraware.com>

'tperimeter' Version 1.110 is released and available at:

   http://www.tundraware.com/Software/tperimeter/

What's New
----------

This is the initial public release of 'tperimeter'


What Is 'tperimeter'?
---------------------

Have you ever been away from the office and needed, say, ssh access to
your system? Ooops - you can't do that because in your zealous pursuit
of security, you set your tcp wrappers to prevent outside access to all
but a select group of hosts. Worse still, everywhere you go, your local
IP address changes so there is no practical way to open up the wrappers
for this situation.

'tperimeter' is a dynamic tcp wrapper control system that gives you
(limited) remote control of your tcp wrapper configuration. It does this
via a web interface that you've (hopefully) secured with https/SSL. You
just log in, specify your current IP address and one of the services you
want to access. 'tperimeter' will then briefly open a hole in your
wrappers long enough to let you in. It then automatically closes the
hole again. Voila! Remote access to your system, wherever you are. You
get much of the facility of a VPN or so-called "port knocking" without
most of the aggravation. As a side benefit, 'tperimeter' will also
simplify management of your standard /etc/hosts.allow tcp wrapper
control file.

'tperimeter' is written in python, shell script, and html. It is very
small and easy to maintain. It was developed and tested on FreeBSD 4.x,
and apache 1.3, but should run with very minor (or no) modification on
most Unix-like systems like Linux or Mac OS X hosts. It comes complete
with documentation in html, pdf, dvi, and Postscript formats. There is
no licensing cost for individual non-commercial use.



-- 
----------------------------------------------------------------------------
Tim Daneliuk     tundra at tundraware.com
PGP Key:         http://www.tundraware.com/PGP/




From klachemin at comcast.net  Sun Sep 10 13:37:19 2006
From: klachemin at comcast.net (Kamilche)
Date: 10 Sep 2006 10:37:19 -0700
Subject: Refactoring Dilemma
Message-ID: <1157909839.595690.183090@p79g2000cwp.googlegroups.com>

'''
I'm in the middle of a refactoring dilemma.
I have several singletons that I'm turning into modules, for ease of
access.
The usual method is noted as 'Module 1' below.
The new method is noted as 'Module 2'.
Is there any reason NOT to do this that I may be unaware of?
It's easier than remembering to declare global variables at the top of
the function.
'''

# ----------- Module 1.py ------------
# Normal module processing
var = 0

def MyRoutine():
    global var
    var = 1

MyRoutine()
print var


# ----------- Module 2.py ------------
# 'Self' module processing
import sys
var = 0
self = sys.modules[__name__]

def MyRoutine():
    self.var = 1

MyRoutine()
print var



From filipwasilewski at gmail.com  Sat Sep 16 08:18:40 2006
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: 16 Sep 2006 05:18:40 -0700
Subject: xmlrpc, extract data from http headers
In-Reply-To: <mailman.170.1158398312.10491.python-list@python.org>
References: <mailman.133.1158333835.10491.python-list@python.org>
	<1158364314.135181.129740@d34g2000cwd.googlegroups.com>
	<mailman.170.1158398312.10491.python-list@python.org>
Message-ID: <1158409120.687682.153870@i3g2000cwc.googlegroups.com>

Milos Prudek wrote:
> > Overload the _parse_response method of Transport in your
> > BasicAuthTransport and extract headers from raw response. See the
> > source of xmlrpclib.py in the standard library for details.
>
> Thank you.
>
> I am a bit of a false beginner in Python. I have written only short scripts. I
> want to read "Dive into Python" to improve my knowledge. Your advice is
> perfect. It is my fault that I need a little more guidance.
>
> I am not sure how the headers will be passed from Transport to the instance of
> ServerProxy. That is, if I change the _parse_response method, how do I
> retreive the headers using the ServerProxy command?

Erm, now I see that my previous response was incorrect, sorry. The
headers are not passed to the _parse_response method.

A better solution would be to extract cookies from headers in the
request method and return them with response (see the code below). I
still wonder if there is an easy way to use CookieJar from cookielib
with xmlrpclib.

class CookieTransport(xmlrpclib.Transport):
    def request(self, host, handler, request_body, verbose=0):
        h = self.make_connection(host)
        if verbose:
            h.set_debuglevel(1)

        self.send_request(h, handler, request_body)
        self.send_host(h, host)
        self.send_user_agent(h)
        self.send_content(h, request_body)

        errcode, errmsg, headers = h.getreply()

        if errcode != 200:
            raise ProtocolError(
                host + handler,
                errcode, errmsg,
                headers
                )

        self.verbose = verbose

        cookies = self.get_cookies(headers)

        try:
            sock = h._conn.sock
        except AttributeError:
            sock = None

        response = self._parse_response(h.getfile(), sock)
        if len(response) == 1:
            response = response[0]

        return response, cookies

    def _get_cookies(self, headers):
        import Cookie
        c = []
        for v in headers.getheaders('set-cookie'):
            c.append(Cookie.SimpleCookie(v))
        return c

server = xmlrpclib.ServerProxy("http://localhost:8000",
transport=CookieTransport())
result, cookies = server.something.call()


best,
fw



From steve at holdenweb.com  Mon Sep 11 06:00:48 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 11 Sep 2006 11:00:48 +0100
Subject: Is there a way to take a priori knowledge out of field
	definitions?
In-Reply-To: <00f401c6d56a$6ff7d380$03000080@hendrik>
References: <00f401c6d56a$6ff7d380$03000080@hendrik>
Message-ID: <ee3c36$64m$1@sea.gmane.org>

Hendrik van Rooyen wrote:
> Hi,
> 
> It is possible to build a system where the fields are "self defining" : -
> 
> One way is to keep a dictionary of tags and descriptors, and to keep "the data"
> in a dictionary using the same tags as keys, with values - an oversimplified
> example:
> 
> DefinitionDict = {1:'Quantity',2:'Price',3:'Value'}
> 
> DataItemDict = {1:10,2:3.50,3:35.00}
> 
> This is conceptually not much different to putting headers on columns in a
> database table or a spreadsheet, with the data item being a row, or to HT or
> XML.
> 
> Now obviously the definitions need not be single valued strings, but could be
> multivalues, for use at different times, such as for gui displaying, for
> printing, etc, and could also hold type information, as most databases do.
> 
> Up to this point, there is no a priori human knowledge mixed in with the data
> that has not been written down.
> 
> However, when we want to make say a validation rule, such as Quantity times
> Price must equal Value, then we are using a priori knowledge about the data to
> formulate this.
> 
> At this point, if a routine is written to check that DataItemDict[1] multiplied
> by DataItemDict[2] is indeed equal to DataItemDict[3], then we are casting the
> meanings into stone, and the flexibility of the structure is to a large extent
> lost.
> 
> Now if I want to make a system where these sort of rules, as well as more
> complicated ones, are also definable - Is there a way to do it simply and
> cleanly - a way to expand the DefinitionDict so that it contains all of what we
> know about the structure and relationships of and between the items of data?
> 
> It seems to me that if this could be done, then it could be used to dynamically
> generate the routines needed for validation, update, etc...
> 
> But my brain strains when I try to think about how to do it...
> 
You need to look at properties. The property() function allows you to 
define methods that are called (and which can therefore perform access 
control and/or semantic checks) when attributes are accessed.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From kode4u at gmail.com  Thu Sep 21 09:21:09 2006
From: kode4u at gmail.com (kode4u)
Date: 21 Sep 2006 06:21:09 -0700
Subject: How to get ip setting, dynamic ip or static ip?
Message-ID: <1158844868.766047.73270@b28g2000cwb.googlegroups.com>

How to use python get my windows box's ip setting type? Dynamic ip, or
static ip?

If it's static ip, what's the exact value?



From ptmcg at austin.rr._bogus_.com  Fri Sep 15 10:52:47 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Fri, 15 Sep 2006 14:52:47 GMT
Subject: Searching for patterns on the screen
References: <mailman.125.1158327884.10491.python-list@python.org>
Message-ID: <37zOg.1954$vD2.787@tornado.texas.rr.com>

"Jerry Hill" <malaclypse2 at gmail.com> wrote in message 
news:mailman.125.1158327884.10491.python-list at python.org...
> Hello all,
>
> I have a piece of code I could use some help optimizing.  What I'm
> attempting to do is periodically grab a screenshot, and search for 2D
> patterns of black pixels in it.  I don't care about any color other
> than black.  Here's some simple code that simulates my worst-case
> scenario, scanning the whole screen for a sequence that does not
> exist:
>
> import ImageGrab  # From the PIL library
>
> def removeColor(rgb):
>    r, g, b = rgb
>    return (r == 0 and g == 0 and b == 0)
>
> BMP = ImageGrab.grab.getdata()
> x = map(removeColor, BMP)
>
> The idea is to search for sequences of black pixels on a background
> that can change colors.

I had to do a similar thing using pywinauto to interact with a IE browser 
running an embedded Flash application.  To speed things up, I included psyco 
to compile my functions.

As far as working just in Python, you could remove the tuple unpacking 
inside removeColor, and shorten it to just:

def removeColor(rgb):
    return rgb==(0,0,0)

or even better:

BLACK = (0,0,0)
def removeColor(rgb):
    return rgb==BLACK

By defining BLACK once and just referring to it by name, you also avoid 
dynamically constructing the (0,0,0) tuple in every call.

But you might also look at the PIL docs and see if there is a way to do this 
color manipulation using the PIL API - the advantage here is that then you 
would be invoking a C-compiled API routine, which will run way faster than 
any optimized Python method.

-- Paul





From gagsl-py at yahoo.com.ar  Thu Sep 28 22:29:58 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 23:29:58 -0300
Subject: Recursive descent algorithm able to parse Python?
In-Reply-To: <451c29c5$0$16532$ed2619ec@ptn-nntp-reader01.plus.net>
References: <1159471326.663651.110690@h48g2000cwc.googlegroups.com>
	<451c29c5$0$16532$ed2619ec@ptn-nntp-reader01.plus.net>
Message-ID: <7.0.1.0.0.20060928232500.06c2fc50@yahoo.com.ar>

At Thursday 28/9/2006 17:00, Michael wrote:

>seberino at spawar.navy.mil wrote:
>
> > I'm a compiler newbie and curious if Python grammar is able to
> > be parsed by a recursive descent parser or if it requires
> > a more powerful algorithm.
>
>Python is relatively simple to parse using a recursive descent parser. If
>you're rolling your own as a learning exercise, the grammar for python is
>included in one of the top level directories of the source distribution for
>python.

And it will stay so. From PEP 3099: "The parser won't be more complex 
than LL(1). Simple is better than complex. This idea extends to the 
parser. Restricting Python's grammar to an LL(1) parser is a 
blessing, not a curse. It puts us in handcuffs that prevent us from 
going overboard and ending up with funky grammar rules like some 
other dynamic languages that will go unnamed, like Perl."



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From skip at pobox.com  Sun Sep 24 09:34:16 2006
From: skip at pobox.com (skip at pobox.com)
Date: Sun, 24 Sep 2006 08:34:16 -0500
Subject: CSV mailing list moved to python.org
Message-ID: <17686.35160.301873.834341@montanaro.dyndns.org>

The csv mailing list originally hosted on mojam.com has been moved intact to
a new home on mail.python.org.  Thanks to Brad Knowles for turning the
necessary knobs on mail.python.org.  The list info page is at:

    http://mail.python.org/mailman/listinfo/csv

For a fairly short period of time the old list address and web pages will
redirect to the new location.

The csv mailing list was originally created to support the development of a
csv module for Python (available since 2.3). It now serves mostly as a
low-volume place to discuss extensions to the module, offer assistance to
users, and as a place to report problems.

-- 
Skip Montanaro - skip at pobox.com - http://www.mojam.com/
"In China today, Bill Gates is Britney Spears.  In America today, Britney
Spears is Britney Spears - and that is our problem."  Thomas L. Friedman in
"The World is Flat"


From g.brandl-nospam at gmx.net  Wed Sep 27 12:13:20 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 18:13:20 +0200
Subject: Surprise using the 'is' operator
In-Reply-To: <451A9824.6040106@tobiah.org>
References: <mailman.746.1159307893.10491.python-list@python.org>
	<451A9824.6040106@tobiah.org>
Message-ID: <efe7v1$8ls$1@news.albasani.net>

tobiah wrote:
> wesley chun wrote:
>>> "Terry Reedy" <tjr... at udel.edu> wrote:
>>> > as a side note, the ints that are cached (for current versions of
>>> > Python) are in range(-1, 100)... is this documented somewhere?
>>> Not true for at least 2.4 and 2.5.  The cached range has expanded
>> 
>> oops, apologies to all... it really *is* subject to change. ;-) it's
>> now range(-5, 257).
>> 
>> -wesley
> 
> I don't pretend to understand the reasons for all of this,
> but if it is possible to use the same integer object whenever
> it is referenced, then why should there be a limit on range?
> 
> Suppose I fill an list with 100 million random integers in the range
> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
> of '12345' pointed to the same integer object?  Why should more be made,
> when they all do the same thing, and are not subject to change?

Because for typical usage of integers (which doesn't include your example),
it is more expensive to check if there's already an integer with that specific
value out there than to create a new one.


Georg


From benjamin.grant at duke.edu  Fri Sep  8 22:36:36 2006
From: benjamin.grant at duke.edu (benjamin.grant at duke.edu)
Date: Fri,  8 Sep 2006 22:36:36 -0400
Subject: ubuntu crash
Message-ID: <20060908223636.lwwp4wpj44ww080k@webmail.duke.edu>

I typed in apt-get remove python
and everything essentially was wiped off my computer.  I jsut want to get it
back to the point of whwen I installed ubuntu, I'd like to get my documentst
back as well but doubt I'll be able to do this.  I installed gnome so I have a
graphical  interface again but can only log in as root. Is there a way to
resintall??? thanks
Ben



From robert.kern at gmail.com  Sun Sep 17 04:22:01 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Sun, 17 Sep 2006 03:22:01 -0500
Subject: Finding dynamic libraries
In-Reply-To: <1158479910.501103.154950@d34g2000cwd.googlegroups.com>
References: <mailman.131.1158333391.10491.python-list@python.org>	<1158367145.252363.21230@d34g2000cwd.googlegroups.com>	<mailman.166.1158391127.10491.python-list@python.org>	<1158477794.780781.83700@i42g2000cwa.googlegroups.com>	<mailman.195.1158478458.10491.python-list@python.org>
	<1158479910.501103.154950@d34g2000cwd.googlegroups.com>
Message-ID: <eej0j6$4sh$1@sea.gmane.org>

MonkeeSage wrote:
> Robert Kern wrote:
>> It depends on the OS. Most Linux systems do not.
> 
> Hmm. Looks like 'man dlopen' confirms that (on my box anyway). It looks
> like the working directory is never searched at all (unless it is
> explicitly listed somewhere). Bummer. What about using ldconfig -l?

Doesn't exist on one of the platforms the OP is using, namely OS X.

It's simple enough to write a wrapper script around one's test runner that will 
set {DYLD,LD}_LIBRARY_PATH before starting the python executable.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From sjmachin at lexicon.net  Thu Sep  7 18:37:02 2006
From: sjmachin at lexicon.net (John Machin)
Date: 7 Sep 2006 15:37:02 -0700
Subject: Unicode string handling problem
In-Reply-To: <dki0g2ta2utaa1gig6fanp6unbj0tph72k@4ax.com>
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
	<1157506499.619835.62950@e3g2000cwe.googlegroups.com>
	<7iesf2d82cegjj3haubc6rhcbkk3lcq230@4ax.com>
	<1157520599.406234.201050@d34g2000cwd.googlegroups.com>
	<dki0g2ta2utaa1gig6fanp6unbj0tph72k@4ax.com>
Message-ID: <1157668622.307677.27260@d34g2000cwd.googlegroups.com>


Richard Schulman wrote:
> It turns out that the Unicode input files I was working with (from MS
> Word and MS Notepad) were indeed creating eol sequences of \r\n, not
> \n\n as I had originally thought. The file reading statement that I
> was using, with unpredictable results, was
>
> #in_file =
> codecs.open("c:\\pythonapps\\in-graf2.my","rU",encoding="utf-16LE")
>
> This was reading to the \n on first read (outputting the whole line,
> including the \n but, weirdly, not the preceding \r). Then, also
> weirdly, the next readline would read the same \n again, interpreting
> that as the entirety of a phantom second line. So each input file line
> ended up producing two output lines.
>
> Once the mode string "rU" was dropped, as in
>
> in_file =
> codecs.open("c:\\pythonapps\\in-graf2.my",encoding="utf-16LE")
>
> all suddenly became well: no more doubled readlines, and one could see
> the \r\n termination of each line.

You are on Windows. I would *not* describe as "well" lines read in (the
default) text mode ending in u"\r\n". It would expect it to convert the
line endings to u"\n". At best, this should be documented. Perhaps
someone with some knowledge of the intended treatment of line endings
by codecs.open() in text mode could comment? The two problems are
succintly described below:

File created in Windows Notepad and saved with "Unicode" encoding.
Results in UTF-16LE encoding, line terminator is CR LF, has BOM (LE) at
front -- as show below.

| Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
| Type "help", "copyright", "credits" or "license" for more
information.
| >>> open('notepad_uc.txt', 'rb').read()
|
'\xff\xfea\x00b\x00c\x00\r\x00\n\x00d\x00e\x00f\x00\r\x00\n\x00g\x00h\x00i\x00\r
| \x00\n\x00'
| >>> import codecs
| >>> codecs.open('notepad_uc.txt', 'r',
encoding='utf_16_le').readlines()
| [u'\ufeffabc\r\n', u'def\r\n', u'ghi\r\n']
| >>> codecs.open('notepad_uc.txt', 'r', encoding='utf_16').readlines()
| [u'abc\r\n', u'def\r\n', u'ghi\r\n']
### presence ot u'\r' was *not* expected
| >>> codecs.open('notepad_uc.txt', 'rU',
encoding='utf_16_le').readlines()
| [u'\ufeffabc\n', u'\n', u'def\n', u'\n', u'ghi\n', u'\n']
| >>> codecs.open('notepad_uc.txt', 'rU',
encoding='utf_16').readlines()
| [u'abc\n', u'\n', u'def\n', u'\n', u'ghi\n', u'\n']
### 'U' flag does change the behaviour, but *not* as expected.

Cheers,
John



From jaysherby at gmail.com  Wed Sep 13 23:19:18 2006
From: jaysherby at gmail.com (Jay)
Date: 13 Sep 2006 20:19:18 -0700
Subject: time-based point system
Message-ID: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>

I'm writing a game script and the point system will be based upon time.
 The less time there is between event one and event two, the higher
score you'll get for event two.  However, I've got a problem figuring
how to do this.  Here's why.  I don't want the score system to just be
a straight charted system.  Y'know, like if the time is between x and y
then the points you get are z.  I want to mathematically figure out the
pointage.  That's what I can't figure out how to do.  If it were such
that the more time there is, the more points there are, that would be
easy.  I could just multiply the time by something or other.  Or, if
there was a time limit between the two events, that, too, would be easy
because I could subtract the amount of time spent from the possible
amount of time and multiply by something for points.  Neither of these
are the case.  Any suggestions?



From sturlamolden at yahoo.no  Thu Sep 28 13:38:46 2006
From: sturlamolden at yahoo.no (sturlamolden)
Date: 28 Sep 2006 10:38:46 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <1159436990.636089.288590@k70g2000cwa.googlegroups.com>
References: <451b2c0b@news.bezeqint.net>
	<1159436990.636089.288590@k70g2000cwa.googlegroups.com>
Message-ID: <1159465126.386249.327300@i42g2000cwa.googlegroups.com>


sturlamolden wrote:

> Remember that O(1) is not neccesarily faster than O(N)! Unless your
> linked list is very big, you will get something called a 'cache miss'
> inside your CPU. Thus it is usually more efficient to work with dynamic
> arrays.

This was a bit ackwardly formulated. What I was trying to say is that
linked lists produces cache misses rather often, whereas small dynamic
arrays do not. This is because linked lists are not contigous in
memory, in contrast to dynamic arrays. Thus, adding an element to a
dynamic array is in most cases faster, even tough you have to make a
copy the whole array. The same is true when you try do delete some
elements from a list. Small dynamic arrays are faster than linked
lists, because they can be kept in cache. Creating a new array in cache
is faster than tracing after pointers. It is only when dynamic arrays
are to large to fit in cache that linked lists perform better. But in
this case, something like Java's ArrayList is the preferred data
structure.

That is the reason only fools and DSA students use linked lists. They
are a nice teoretical cobnstruct, but not friendly to real-world
computer hardware. Perhaps they were the better option some time in the
past, when CPUs had much less cache and could only accomodate very
short arrays.



From skip at pobox.com  Mon Sep 25 07:58:24 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 06:58:24 -0500
Subject: Unexpected behaviour of csv module
In-Reply-To: <ef8208$q37$1$8300dec7@news.demon.co.uk>
References: <ef751u$8m$1$8300dec7@news.demon.co.uk>
	<1159148247.308716.234600@i42g2000cwa.googlegroups.com>
	<ef8208$q37$1$8300dec7@news.demon.co.uk>
Message-ID: <17687.50272.185829.879722@montanaro.dyndns.org>

One could argue that your CSV file is broken.  Of course, since CSV is a
poorly specified format, that's a pretty weak statement.  I don't remember
just what your original problem was, but it concerned itself with white
space as I recall.  Have you tried setting the skipinitialspace parameter in
your call to create a reader object?

Skip



From horpner at yahoo.com  Fri Sep 22 15:35:53 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 22 Sep 2006 21:35:53 +0200
Subject: Newbie RE question
References: <1158950663.902262.235410@m73g2000cwd.googlegroups.com>
	<1158950848.665561.143020@i3g2000cwc.googlegroups.com>
Message-ID: <slrneh8eq6.1c8.horpner@FIAD06.norwich.edu>

On 2006-09-22, T <ty.2006 at yahoo.com> wrote:
> I meant to say:  Search for any character in r'/\:*?"<>|' in a
> string Sorry

  Ford Prefect puts The Python Documentation down on his satchel
  and lies down to sleep. He whispers, "I don't want to spoil
  anything, but you'll never get anywhere using Python without
  consulting the documentation about lots of stuff." Ford drifts
  off to sleep.
  >EXAMINE DOCS

  I don't know the word "docs".
  >EXAMINE PYTHON
  (The Python Documentation)

  The front page says: "Python Documenation: DON'T PANIC!"
  >CONSULT PYTHON ABOUT RE MODULE
  You don't have that.

  >TAKE IT
  Taken.
  >CONSULT GUIDE ABOUT RE MODULE

You'll have to play the game to find out how it ends. ;)

-- 
Neil Cerutti
Life is indeed precious, and I believe the death penalty helps
affirm this fact. --Edward Koch


From samirbenabid at linuxmail.org  Mon Sep  4 06:25:45 2006
From: samirbenabid at linuxmail.org (samir)
Date: 4 Sep 2006 03:25:45 -0700
Subject: Syntax suggestion.
In-Reply-To: <1hl3e8m.1gt0sd580nscuN%aleax@mac.com>
References: <1156954306.471779.117520@p79g2000cwp.googlegroups.com>
	<ed6hmc$ld1$1@sunnews.cern.ch>
	<1157137823.018472.143300@m73g2000cwd.googlegroups.com>
	<slrnefhdtt.flm.sybrenUSE@schuimige.stuvel.eu>
	<1157316221.203928.26090@h48g2000cwc.googlegroups.com>
	<1hl3e8m.1gt0sd580nscuN%aleax@mac.com>
Message-ID: <1157365545.808068.231270@i42g2000cwa.googlegroups.com>


Alex Martelli wrote:
> What a mess it would be to disambiguate statements such as
>
> x = foo bar baz bat
>
> is it x = (foo, bar, baz, bat)
> or x = foo(bar, baz, bat)
> or x = foo(bar(baz), bat)
> or x = foo(bar, baz(bat))
> or x = foo(bar(baz, bat))

It will be x=foo(bar,baz,bat). The parenthese ommition would only be
valable for the first function call in the statement.

> or ... [even ignoring the possibility that one or more of these might be
> functions callable without arguments...!!!]...

That won''t be a problem: "x=foo bar(baz) bat" would be equivalent to
"x=foo(bar(baz),bat)".
Or, but least realistic, it would be in the scheme trend. For example:

a=b(c,d(e,f(g,h,i,j,k))) <==> a=b c (d e (f g h i j k))

It looks nicer, isn't it? :)

> iPython has some heuristics that may be reasonable for the commandline
> (and are, in any case, at least simple), but in practice I find that I
> go back to using the good old interactive Python interpreter rather than
> putting up with even those simple heuristics.

That depends of your need to such tools. For example if you need to
copy a file, then, resolve a linear system then chroot and set the
password as de hexadecimal representation of the hash function of pi
multiplied by the averge of the solution coordinations +_+, you'll need
IPython ;)



From tim.golden at viacom-outdoor.co.uk  Thu Sep 28 08:27:45 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 28 Sep 2006 13:27:45 +0100
Subject: Starting Win32 Service
In-Reply-To: <1159446160_3045@sp6iad.superfeed.net>
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B4C0@vogbs009.gb.vo.local>

| Tim Golden wrote:
| ...
| > Yes, sorry about that, it's a well-known (to me) gotcha.
| > Basically there's no way I can extract the params from
| > the COM interface in a way which implies order, so I
| > can't take them in positionally. (Corrections to this
| > statement will be gratefully received).
| >
| > TJG
| 
| InParameters.Properties_ can be accessed by name or index,
| so you should be able to map both *args and **kwargs.
| (although you'd have to check for overlap yourself)
| 
|       Roger

Thanks a lot, Roger. I thought I'd looked around this
one before, but obviously not hard enough! I'll have
another look.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
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From mensanator at aol.com  Fri Sep  1 19:38:59 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 1 Sep 2006 16:38:59 -0700
Subject: ANN: GMPY binaries for Windows 2.5
References: <1157093919.661517.45590@e3g2000cwe.googlegroups.com>
Message-ID: <1157153938.998816.134300@b28g2000cwb.googlegroups.com>


casevh at comcast.net wrote:
> GMPY binaries for Python 2.5 are available at
> http://home.comcast.net/~casevh/
>
> Notes
> ====
> They have not been extensively tested.

They don't work. At least the Pentium4 binary doesn't work,
same problem as before. Is the patch installed?

Python 2.5c1 (r25c1:51305, Aug 17 2006, 10:41:11) [MSC v.1310 32 bit
(Intel)] on win32
Type "copyright", "credits" or "license()" for more information.

    ****************************************************************
    Personal firewall software may warn about the connection IDLE
    makes to its subprocess using this computer's internal loopback
    interface.  This connection is not visible on any external
    interface and no data is sent to or received from the Internet.
    ****************************************************************

IDLE 1.2c1
>>> import gmpy
>>> gmpy.version()
'1.04'
>>> gmpy.divm(1,2,5)
mpz(3)
>>> gmpy.divm(4,8,20)
mpz(3)
>>> gmpy.divm(4,8,20)

Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    gmpy.divm(4,8,20)
ZeroDivisionError: not invertible

>>> gmpy.mpz(20)
mpz(20)
>>> gmpy.mpz(8)
mpz(2)
>>> gmpy.mpz(4)
mpz(1)



>
> This is based on the CVS version of gmpy and includes a patch (not yet
> in CVS) from Alex Martelli that resolves a bug with divm(). Please
> consider this an "unofficial" release. The patch and the source code
> snapshot I used are also available on the website.
>
> GMP 4.2.1 is used.
>
> There are three versions available: one that should work on any
> processor, one compiled for Pentium 4 processor, and one compiled for
> AMD Athlon (32-bit).
>
> If there is demand, I'll create updated binaries for earlier version of
> Python.
> 
> Enjoy,
> 
> casevh



From isalazar80 at yahoo.com.mx  Mon Sep 18 20:55:25 2006
From: isalazar80 at yahoo.com.mx (citlaly)
Date: 18 Sep 2006 17:55:25 -0700
Subject: Read a group of files as a list
In-Reply-To: <mailman.250.1158626322.10491.python-list@python.org>
References: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
	<mailman.250.1158626322.10491.python-list@python.org>
Message-ID: <1158627325.346229.70150@k70g2000cwa.googlegroups.com>


Thanks Steven! I'll check it!!

Saludos!!



From deets at nospam.web.de  Tue Sep 26 06:05:35 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 26 Sep 2006 12:05:35 +0200
Subject: Remap Mysql tuple to dictionary
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>	<efaeg4$5oj$2@lust.ihug.co.nz>	<mailman.629.1159250957.10491.python-list@python.org>	<efaj9p$fqq$2@lust.ihug.co.nz>
	<efakif$idf$1@lust.ihug.co.nz>
	<mailman.644.1159256238.10491.python-list@python.org>
	<efapp8$rfd$3@lust.ihug.co.nz>
Message-ID: <4nscbfFbpmmjU3@uni-berlin.de>

> 
> SQL databases like MySQL are _designed_ for efficiency.

Efficiency with respect to what? That statement is plain wrong. They are
designed for a pretty general case of data storage efficiency, in the
domain of relational algebra. And for a lot of use-cases, they offer a good
ratio of ease-of-use, speed and reliability and the overhead they
introduce.

But there are lots of cases where hand-tailored data structures - in python
as well as in C - are way better suited. Think of graph representations for
example, especially for reachability queries and the like. Does google use
ORACLE (or whatever DB) for their index? Nope.

So - without knowing the usecase,

"""
All right, sorry, looks like they want to load the entire table into RAM and
key it off the first field. Kind of defeats the point of having SQL, but
there you go...
"""

is a pretty strong thing to say. 

Diez


From fredrik at pythonware.com  Mon Sep 25 09:19:33 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 15:19:33 +0200
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org><7xy7s8crty.fsf@ruckus.brouhaha.com><45178f23$0$19894$4d3efbfe@news.sover.net><7xwt7suzv8.fsf@ruckus.brouhaha.com>
	<1159173488.326443.245730@d34g2000cwd.googlegroups.com>
Message-ID: <ef8l15$mbe$1@sea.gmane.org>

John Machin wrote:

> Actually, what Willie was concerned about was some cockamamie DBMS
> which required to be fed Unicode, which it encoded as UTF-8, but
> silently truncated if it was more than the n in varchar(n) ... or
> something like that.
>
> So all he needs is a boolean result: u.willitfit(encoding, width)

at what point in the program would that method be used ?

how large are the strings, for typical cases ?

</F> 





From maric at aristote.info  Mon Sep  4 08:05:18 2006
From: maric at aristote.info (Maric Michaud)
Date: Mon, 4 Sep 2006 14:05:18 +0200
Subject: What are super()'s semantics?
In-Reply-To: <1157370520.155278.214110@b28g2000cwb.googlegroups.com>
References: <Xns983422E3EC97Akojaklikescheerios@144.162.164.191>
	<1157370520.155278.214110@b28g2000cwb.googlegroups.com>
Message-ID: <200609041405.19040.maric@aristote.info>

Le lundi 04 septembre 2006 13:48, Carl Banks a ?crit?:
> Essentially, it's objects that have MROs, not classes.
Wrong, __mro__ is an attribute of types (subtypes of type) but like __class__ 
it is not available in the instances.
mro() is standard a method of type.

In [150]: A.mro()
Out[150]: [<class '__main__.A'>, <type 'object'>]

In [152]: A().mro()
---------------------------------------------------------------------------
exceptions.AttributeError                            Traceback (most recent 
call last)

/home/maric/<ipython console>

AttributeError: 'A' object has no attribute 'mro'

In [154]: type.mro(A)
Out[154]: [<class '__main__.A'>, <type 'object'>]


-- 
_____________

Maric Michaud
_____________

Aristote - www.aristote.info
3 place des tapis
69004 Lyon
Tel: +33 426 880 097


From outstretchedarm at hotmail.com  Thu Sep  7 16:18:22 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 7 Sep 2006 13:18:22 -0700
Subject: Looking for the Perfect Editor
Message-ID: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>

I'd love the perfect editor that would be:

a) free

b) enable me to drag and drop code snippets from a sort of browser into
the code

c) can run programs right from within

d) can edit
      - PYTHON
      - Javascript
      - HTML
      - actionscript (since I'm also learning flash)

e) easy to learn

suggestions?



From fredrik at pythonware.com  Tue Sep 26 08:54:45 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 14:54:45 +0200
Subject: does anybody earn a living programming in python?
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com><1159271339.775493.132180@i3g2000cwc.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
Message-ID: <efb7ul$4d8$1@sea.gmane.org>

Anthony Baxter wrote:

> This seems to be a very, very silly original post. I know of plenty of
> people who make a living programming Python. It's been the vast
> majority of the programming (for money) I've done in the last ten
> years, and there's countless other people I know here in Melbourne in
> the same position.

well, I think I prefer the "are you sure you exist?" trolls over the "python sucks
and you are all a bunch of clueless something something" and "this thing is broken
beyond repair and you are all a bunch of clueless something something" trolls.

</F> 





From deets at nospam.web.de  Tue Sep 12 10:51:29 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 12 Sep 2006 16:51:29 +0200
Subject: Are Python's reserved words reserved in places they dont need
	to be?
In-Reply-To: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
Message-ID: <4mnvrhF72ppeU1@uni-berlin.de>

metaperl schrieb:
>   -->  python -i
>>>> class = "algebra"
>   File "<stdin>", line 1
>     class = "algebra"
>           ^
> SyntaxError: invalid syntax
> 
> 
> Why isn' t the parser smart enough to see that class followed by an
> identifier is used for class definition but class followed by equals is
> a simple assignment?
> 
> Also, I had a bug where I tried to set the attributes "user" and "pass"
> in an object but "pass" would not work because it is a reserved word.
> Again pass should be reserved in certain contexts but not others.

Most parsers are written in a way that makes keywords reserved, 
regardless of their occurrence. That is because it is way easier to do 
so. And the few reserved words won't matter usually.

> Is Python 3k going to fix this sort of thing?

Don't think so.

Diez


From bignose+hates-spam at benfinney.id.au  Mon Sep 18 08:08:50 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Mon, 18 Sep 2006 22:08:50 +1000
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
Message-ID: <87u035l6lp.fsf@benfinney.id.au>

"GHUM" <haraldarminmassa at gmail.com> writes:

> That's one of the great freedoms of Python and its licence: You are
> free to chose the licence for your product. No GPLish "you must be
> as free as we", more BSDish: "Do what you want, do not come crying"

This has nothing to do with the license of Python. Whether Python was
distributed under the GPL, BSD or Jack's Own Oddball License, the
copyright holder of Python has no say over what license you choose for
your own work.

So long as you're not distributing some or all of Python itself, or a
derivative work, the license for Python has no legal effect on what
license you choose for your own work.

-- 
 \      "He that would make his own liberty secure must guard even his |
  `\                          enemy from oppression."  -- Thomas Paine |
_o__)                                                                  |
Ben Finney



From gagsl-py at yahoo.com.ar  Wed Sep 20 00:19:46 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 20 Sep 2006 01:19:46 -0300
Subject: Single character input without pressing 'Enter'
In-Reply-To: <1158723650.091962.98640@m73g2000cwd.googlegroups.com>
References: <1158723650.091962.98640@m73g2000cwd.googlegroups.com>
Message-ID: <7.0.1.0.0.20060920011920.03eb7360@yahoo.com.ar>

At Wednesday 20/9/2006 00:40, unni.tallman wrote:

>how can i read input from stdin, char by char, i want to get the
>character as soon as it is entered, without having to press 'Enter'
>after each character.

See this thread 
<http://mail.python.org/pipermail/python-list/2006-August/355683.html>



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From bob at passcal.nmt.edu  Mon Sep  4 16:52:03 2006
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Mon, 4 Sep 2006 14:52:03 -0600
Subject: Tkinter window focusing or selecting
Message-ID: <QdCdnRS-T6QVDGHZnZ2dnUVZ_vudnZ2d@nmt.edu>

I have a program with many "forms" (Toplevel windows with entry fields). 
Sometimes when I .deiconify() and .lift() a form that is a child of another 
form, but that just got buried under other forms it comes up 'not active' 
(dimmed).  I have to click on the title bar (or anywhere in the window) 
before I can start entering stuff into the entry fields.  It doesn't seem to 
happen all of the time, which I don't understand.  Doing a .focus_set() 
after the .lift() fixes it, but then Tkinter loses track of which entry 
field the cursor was in when the window got covered up.  Is there something 
else I should be calling after the .deiconify() and .lift() to make sure the 
window get 'activated' (or what ever that state is)?  This is on Linux at 
this point.

Thanks!

Bob




From http  Tue Sep 12 20:38:46 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 17:38:46 -0700
Subject: Help me use my Dual Core CPU!
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us>
Message-ID: <7xirjswqg9.fsf@ruckus.brouhaha.com>

claird at lairds.us (Cameron Laird) writes:
> Me, too.  I'd love to talk over Linda with other aficionados,
> and/or hunt together for an excuse to use her/it.

How about an Mnesia-like database for Python?  (Mnesia is an embedded
database for Erlang programs.)

I see in the PyLinda page that 

  * 13/1/05 - Version 0.4  
    * Removed SysV shared memory and made Unix Domain Sockets the
       default as they are quicker.

That sounds to me like the shared memory version was broken somehow.
I don't see how a socket-based approach needing context switches could
be faster than a zero-copy, all-userspace approach.

FWIW, I remember seeing a web page about someone else implementing
tuplespace in Python for his home Beowulf cluster, but although it was
written as a C extension, it didn't seem all that serious.  Found it:

  http://willware.net/beowulf.pdf
  http://sourceforge.net/projects/linuxtuples


From ldo at geek-central.gen.new_zealand  Tue Sep 26 17:19:03 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Wed, 27 Sep 2006 09:19:03 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<mailman.560.1159188345.10491.python-list@python.org>	<ef9nmi$snj$2@lust.ihug.co.nz>	<mailman.637.1159253927.10491.python-list@python.org>
	<efajs7$hbo$1@lust.ihug.co.nz>
	<mailman.679.1159277222.10491.python-list@python.org>
Message-ID: <efc5ec$can$2@lust.ihug.co.nz>

In message <mailman.679.1159277222.10491.python-list at python.org>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>> In message <mailman.637.1159253927.10491.python-list at python.org>, Steve
>> Holden wrote:
>> 
>> 
>>>Lawrence D'Oliveiro wrote:
>>>
>>>>In message <mailman.560.1159188345.10491.python-list at python.org>, Steve
>>>>Holden wrote:
>>>>
>>>>
>>>>
>>>>>When you use the DB API correctly and paramterise your queries you
>>>>>still need to quote wildcards in search arguments, but you absolutely
>>>>>shouldn't quote the other SQL specials.
>>>>>
>>>>>That's what parameterised queries are for on the first place...
>>>>
>>>>
>>>>So you're suggesting I quote the wildcards, then rely on autoquoted
>>>>parameters to handle the rest? Unfortunately, that's stupid mistake
>>>>number 2.
>>>
>>>Ah, so your quoting function will deduce the context in which arguments
>>>intended for parameter substitution in the query will be used? Or are
>>>you suggesting that it's unwise to rely on autoquoted parameters?
>> 
>> 
>> No, I'm saying it's _incorrect_ to use the existing autoquoting mechanism
>> in combination with a separate function that escapes the wildcards. I
>> previously described the two stupid mistakes that can arise from having a
>> separate function for doing just the wildcard quoting: this is the second
>> one.
>> 
> Sadly your assertions alone fail to convince. Perhaps you could provide
> a concrete example?

Sorry, that turned out to be wrong. You do in fact need to escape the
escapes on wildcards.


From sjmachin at lexicon.net  Tue Sep  5 21:34:59 2006
From: sjmachin at lexicon.net (John Machin)
Date: 5 Sep 2006 18:34:59 -0700
Subject: Unicode string handling problem
In-Reply-To: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
References: <dv4sf2pgbg3l3bq27r5c6j09iuhn9uvvcv@4ax.com>
Message-ID: <1157506499.619835.62950@e3g2000cwe.googlegroups.com>

Richard Schulman wrote:
> The following program fragment works correctly with an ascii input
> file.
>
> But the file I actually want to process is Unicode (utf-16 encoding).
> The file must be Unicode rather than ASCII or Latin-1 because it
> contains mixed Chinese and English characters.
>
> When I run the program below I get an attribute_count of zero, which
> is incorrect for the input file, which should give a value of fifteen
> or sixteen. In other words, the count function isn't recognizing the
> ", characters in the line being read. Here's the program:
>
> in_file = open("c:\\pythonapps\\in-graf1.my","rU")
> try:
>     # Skip the first line; make the second available for processing
>     in_file.readline()
>     in_line = readline()

You mean in_line = in_file.readline(), I hope. Do please copy/paste
actual code, not what you think you ran.

>     attribute_count = in_line.count('",')
>     print attribute_count

Insert
    print type(in_line)
    print repr(in_line)
here [also make the appropriate changes to get the same info from the
first line], run it again, copy/paste what you get, show us what you
see.

If you're coy about that, then you'll have to find out yourself if it
has a BOM at the front, and if not whether it's little/big/endian.

> finally:
>     in_file.close()
>
> Any suggestions?
>

1. Read the Unicode HOWTO.
2. Read the docs on the codecs module ...

You'll need to use

in_file = codecs.open(filepath, mode, encoding="utf16???????")

It would also be a good idea to get into the habit of using unicode
constants like u'",'

HTH,
John



From dale at riverhall.nospam.co.uk  Wed Sep 13 04:46:25 2006
From: dale at riverhall.nospam.co.uk (Dale Strickland-Clark)
Date: Wed, 13 Sep 2006 09:46:25 +0100
Subject: Inter process signalling
References: <GxBNg.6611$Dj4.5066@fe11.usenetserver.com>
	<SJBNg.373$ze4.160@fe06.usenetserver.com>
	<feNNg.11336$xQ1.9373@newsread3.news.pas.earthlink.net>
Message-ID: <CzPNg.17$3q4.8@fe57.usenetserver.com>

Dennis Lee Bieber wrote:

> Unfortunately... You are on Windows...
> 
> I think your choices become: Block, or Poll
> 
> Check the Win32Api modules...
> 
> win32event may be a candidate...
> CreateEvent()
> OpenEvent()
> PulseEvent()
> SetEvent()
> ResetEvent()
> WaitForSingleObject() or WaitForMultipleObjects()

Thanks. We'll look into those.
-- 
Dale Strickland-Clark
Riverhall Systems - www.riverhall.co.uk



From jstroud at mbi.ucla.edu  Fri Sep 22 06:20:12 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 10:20:12 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.438.1158898433.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>
	<mailman.438.1158898433.10491.python-list@python.org>
Message-ID: <wNOQg.3416$GR.976@newssvr29.news.prodigy.net>

Robert Kern wrote:
> James Stroud wrote:
>> I did build my own python 2.5, yesterday, requiring me to rebuild all 
>> extensions.
> 
> Do other extensions build correctly? If so, it's beginning to look like 
> a problem in numpy.distutils .

Actually, I just found that MySQLdb had a similar problem with zlib, but 
instead of bonking during linking, it complained about the compress 
symbol when trying to import into python. The fix was adding "-lz" for 
the linking step, after which it imported just fine.

James


From ilias at lazaridis.com  Sat Sep 23 08:14:41 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Sat, 23 Sep 2006 15:14:41 +0300
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <mailman.477.1158953112.10491.python-list@python.org>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>	<mailman.451.1158926238.10491.python-list@python.org>	<ef0uur$aa1$1@mouse.otenet.gr>	<1158940317.354847.323490@h48g2000cwc.googlegroups.com>	<mailman.469.1158942921.10491.python-list@python.org>	<1158949744.021023.14280@h48g2000cwc.googlegroups.com>
	<mailman.477.1158953112.10491.python-list@python.org>
Message-ID: <ef38fg$6br$1@mouse.otenet.gr>

Steve Holden wrote:
> Ilias Lazaridis wrote:
>> Steve Holden wrote:
...
>>> Though of course the easiest way to enforce your classes to new style is
>>> to begin each module with
>>>
>>> __metaclass__ = type
>>
>> I assume placing this in the central site import (e.g.
>> sitecustomize.py) would collapse python? (I don't want to try it, maybe
>> someone has an isolated instance available for trials).
>>
> I don't think it would "collapse Python", but since each module requires 
> its own __metaclass__ setting it certainly wouldn't change much.

I understand.

Thus I cannot set "__metaclass__ = object" on e.g. project-level or 
site-level, but only module-level.

.

-- 
http://lazaridis.com


From linuxnooby at yahoo.com.au  Thu Sep  7 01:26:29 2006
From: linuxnooby at yahoo.com.au (linuxnooby at yahoo.com.au)
Date: 6 Sep 2006 22:26:29 -0700
Subject: newbie pipe question
In-Reply-To: <44fe1398$0$571$ed2619ec@ptn-nntp-reader03.plus.net>
References: <1157420035.525794.71510@74g2000cwt.googlegroups.com>
	<44fe1398$0$571$ed2619ec@ptn-nntp-reader03.plus.net>
Message-ID: <1157606789.502062.325000@d34g2000cwd.googlegroups.com>

Thanks

David



From jstroud at mbi.ucla.edu  Thu Sep 21 22:33:39 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 02:33:39 GMT
Subject: Building things with setup.py
Message-ID: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>

Hello All,

This is annoying. I am trying to build scipy right now but every .so 
file requires my adding "-lpython2.5 -lpthread -lm -lutil -ldl -shared" 
to the ld flags.

Main Question: When building with "setup.py", where can I include this 
information so I don't have to link every .so file by hand?

Also, why would this not be caught by the developers of scipy and numpy? 
What factors go into needing to specify libraries and to properly link 
.so files manually? Certainly the enthought didn't forget to test the 
build process, so why would my machine be special in this regard?

I'm running Linux FC4 on a dual intel p4 (~3.2 GHz) with sundry 
libraries in non-standard places. Is this non-standard part what's 
killing me?

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From bearophileHUGS at lycos.com  Fri Sep  1 09:54:04 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 1 Sep 2006 06:54:04 -0700
Subject: dictionaries - returning a key from a value
In-Reply-To: <mailman.10250.1157114428.27775.python-list@python.org>
References: <002101c6cdba$f37c2b50$a8e7ca2b@guerrillagames.com>
	<mailman.10250.1157114428.27775.python-list@python.org>
Message-ID: <1157118844.645458.159630@p79g2000cwp.googlegroups.com>

Avell Diroll:

keys = [key for key in sampledict if sampledict[key] == '1974']

Or better, given:

sampledict = {'the Holy Grail':1975, 'Life of Brian':1979,
              'Party Political Broadcast':1974,'Mr. Neutron':1974,
              'Hamlet':1974, 'Light Entertainment War':1974}

keys = [key for key,year in sampledict.iteritems() if year == 1974]
print keys

Another solution is a two-way (bidirectional) dict:
http://cheeseshop.python.org/pypi/two_way_dict/0.2

Bye,
bearophile



From duncan.booth at invalid.invalid  Mon Sep 25 11:35:51 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 25 Sep 2006 15:35:51 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
Message-ID: <Xns9849A8D76EEA1duncanbooth@127.0.0.1>

Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:

> In article <ef8oqr$9pt$1 at news.albasani.net>, Georg Brandl wrote:
>>> I'm sorry, that's not good enough. How, precisely, would it break
>>> "existing code"? Can you come up with an example, or even an
>>> explanation of how it *could* break existing code?
>> 
>> Is that so hard to see? If cgi.escape replaced "'" with an entity
>> reference, code that expects it not to do so would break.
> 
> Sorry, that's still not good enough. Why would any code expect such a
> thing?
> 

It's easy enough to come up with examples which might. For example, I
have doctests which evaluate tal expressions. I don't think I currently
have any which depend on quotes, but I can easily create one (I just 
did, and it passes): 

  >>> print T('''<tal:x tal:content="python:'It\\'s a \\x22tal\\x22 string'" />''')
  It's a "tal" string
  >>> print T('''<x tal:attributes="title python:'It\\'s a \\x22tal\\x22 string'" />''')
  <x title="It's a &quot;tal&quot; string" />

More likely I might output a field value and just happen to have used a quote
in it.

FWIW, in zope tal, the value of tal:content is escaped using the equivalent of 
cgi.escape(s, False), and attribute values are escaped using 
cgi.escape(s, True).

The function T I use is defined as:

def T(template, **kw):
    """Create and render a page template."""
    pt = PageTemplate()
    pt.pt_edit(template, 'text/html')
    return pt.pt_render(extra_context=kw).strip('\n')


From adelagon at gmail.com  Wed Sep 27 06:19:05 2006
From: adelagon at gmail.com (Alvin Delagon)
Date: Wed, 27 Sep 2006 18:19:05 +0800
Subject: MySQLdb and mod_python issue (Steve Holden)
Message-ID: <7a01f6c00609270319p7888c939j16a03a0b3e1b3684@mail.gmail.com>

Thanks for the reply. Fixing it seems a tedious task. I opted in rewriting
the application to a HTTPServer and is working now. I've noticed this
problem on CentOS 4 I might as well report to them the possible version
conflict.
-------------- next part --------------
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From sjmachin at lexicon.net  Tue Sep 12 08:53:01 2006
From: sjmachin at lexicon.net (John Machin)
Date: 12 Sep 2006 05:53:01 -0700
Subject: Running python from a usb drive
In-Reply-To: <1158064478.044626.53180@e3g2000cwe.googlegroups.com>
References: <mailman.340.1158063541.5279.python-list@python.org>
	<1158064478.044626.53180@e3g2000cwe.googlegroups.com>
Message-ID: <1158065581.743924.288930@i42g2000cwa.googlegroups.com>


cjl wrote:
> Tim:
>
> > That would be because it's PATHEXT not PATHTEXT (it's sort
> > of like a PATH but for EXTensions).
>
> Doh.
>
> Me fail English? That's unpossible.
>
> Thanks, I think everything is working with my poor man's movable
> python.
> Last on my todo list is to restore the assoc and ftype settings when
> I'm done, and I found:
>
> http://portableapps.com/node/121
>
> Which seems to show how to do that.
>


Congratulations. Now: how much time have you spent, and how much per
hour are you worth? 

hours * dollars_per_hour < GBP_to_USD(4.99) ???



From carsten at uniqsys.com  Fri Sep 15 14:53:32 2006
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 15 Sep 2006 14:53:32 -0400
Subject: REQ: Java/J2EE Developer 10 Months
In-Reply-To: <450AF3F0.5020808@holdenweb.com>
References: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>
	<450AF3F0.5020808@holdenweb.com>
Message-ID: <1158346412.5738.6.camel@dot.uniqsys.com>

On Fri, 2006-09-15 at 14:41, Steve Holden wrote:
> shrikant at coolsoft.cc wrote:
> [...]
> > Skill:
> > --------
> > 
> > *Java, 2 year UNIX - HP / Solaris, 2 yrs OOA+D, Corba, Perl, XML, UML.
> > *Java dev experience, Swing, JPS, 2 years of OOA+D.
> 
> Clearly not spam, since the guy is so in touch with the readership of 
> this group ... sigh ... is it just me, or is this person an idiot?

Yes, he is an idiot. Good call on CC'ing your assessment to him. :)

-Carsten




From g.brandl-nospam at gmx.net  Tue Sep 26 14:53:19 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Tue, 26 Sep 2006 20:53:19 +0200
Subject: where are isinstance types documented?
In-Reply-To: <mailman.711.1159287948.10491.python-list@python.org>
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>	<mailman.661.1159266060.10491.python-list@python.org>	<wXk*2kLrr@news.chiark.greenend.org.uk>
	<mailman.711.1159287948.10491.python-list@python.org>
Message-ID: <efbsv3$nd3$1@news.albasani.net>

Fredrik Lundh wrote:
> Sion Arrowsmith wrote:
>>
> 
>>> based on http://docs.python.org/ref/types.html, here's a list of the 
>>> most commonly used core types:
>>> [ ... ]
>>> Sequences:
>>>     str
>>>     unicode
>>>     tuple
>>>     list
>> 
>> And set, presumably.
> 
> absolutely!
> 
> however, sets don't seem to be mentioned on that page at all (and if 
> they were, they should be under mappings, right?).  any documentation 
> hackers out there ?

Filed a doc bug (#1565919). Should be a piece of cake for someone more
versed in the English language than me ;)

Georg


From sjmachin at lexicon.net  Fri Sep 22 10:19:52 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 07:19:52 -0700
Subject: "Directory this source file is in (and a sibling)"
In-Reply-To: <0Il*1Sprr@news.chiark.greenend.org.uk>
References: <0Il*1Sprr@news.chiark.greenend.org.uk>
Message-ID: <1158934792.351615.134750@m7g2000cwm.googlegroups.com>


Sion Arrowsmith wrote:
> I have a module which needs to know what directory it's in, and to
> refer to files in a sibling directory, something like App/src/foo.py
> wants to read App/data/conf.xml . But I have no idea in what context
> foo.py is going to be run -- it could be being run as a script, it
> could be being imported as a module by another script from anywhere in
> the directory structure, it's even possible someone will have called
> execfile on it. The following works for everything I've tried:
>
> thisdir = os.path.dirname(os.path.normpath(__file__))
> siblingdir = os.path.normpath(os.path.join(testdir, os.path.pardir, "sibling"))
>
> However, a colleague expressed disgust at this code, but not really
> being a Python programmer had no better suggestions. Is there a neater
> way of getting what I want?

If you plan to have your code executed out of a zip or an egg, you may
have problems because __file__ is not what you want, at least with eggs
and Python 2.[34]. There was a brief thread on this topic on the
distutils SIG mailing list within the last few days.

HTH,
John



From jon+usenet at unequivocal.co.uk  Tue Sep 26 11:53:46 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 15:53:46 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
Message-ID: <slrnehij7q.evq.jon+usenet@snowy.squish.net>

In article <mailman.704.1159285432.10491.python-list at python.org>, Brian Quinlan wrote:
>> Your summary seems pretty reasonable, but please note that later on,
>> the thread was not about cgi.escape escaping (or not) quote
>> characters (as described in your summary), but about Fredrik arguing,
>> somewhat incoherently, that it should have to take character encodings
>> into consideration.
> 
> And, of course, about you telling people that their explanations are not 
> good enough :-)

I guess, if you mean the part of the thread which went "it'll break
existing code", "what existing code"? "existing code" "but what
existing code?" "i dunno, just, er, code" "ok *how* will it break it?"
"i dunno, it just will"?

> BTW, I am curious about how you do unit testing. The example that I used 
> in my summary is a very common pattern but would break in cgi.escape 
> changed it's semantics. What do you do instead?

To be honest I'm not sure what *sort* of code people test this way. It
just doesn't seem appropriate at all for web page generating code. Web
pages need to be manually viewed in web browsers, and validated, and
checked for accessibility. Checking they're equal to a particular
string just seems bizarre (and where does that string come from
anyway?)


From utabintarbo at gmail.com  Thu Sep 28 15:06:46 2006
From: utabintarbo at gmail.com (utabintarbo)
Date: 28 Sep 2006 12:06:46 -0700
Subject: Extra Newby question - Trying to create md5 File Listing
In-Reply-To: <1159450857.229421.28010@m73g2000cwd.googlegroups.com>
References: <OFF50C2C83.2CA9289A-ON862571F6.00514D44-862571F6.0051825A@lifeway.com>
	<mailman.852.1159416078.10491.python-list@python.org>
	<1159450857.229421.28010@m73g2000cwd.googlegroups.com>
Message-ID: <1159470406.715521.71370@e3g2000cwe.googlegroups.com>


Just for S&G's, I offer the following function which will return the
md5sum of an arbitrarily large file. Found a while back while
surfing....

def md5sum(fpath):
    """
    function to return the md5sum (128 bit checksum) of the given file

    The sums are computed as described in RFC 1321. The default mode is
binary.
    Output is a line with checksum and name for each FILE.
    """
    import md5
    import os
    bufsize = 8096
    rmode = 'rb'

    m = md5.new()
    fp = open(fpath, rmode)
    try:
        while 1:
            data = fp.read(bufsize)
            if not data:
                break
            m.update(data)
    except IOError, msg:
        return '0', msg
    return m.hexdigest() + ' ' + fpath

Enjoy!



From corridor.infinite at gmail.com  Thu Sep  7 02:26:42 2006
From: corridor.infinite at gmail.com (Infinite Corridor)
Date: 6 Sep 2006 23:26:42 -0700
Subject: 22, invalid agument error
In-Reply-To: <1157593501.762579.135500@m73g2000cwd.googlegroups.com>
References: <1157563063.063705.317970@m73g2000cwd.googlegroups.com>
	<1157593501.762579.135500@m73g2000cwd.googlegroups.com>
Message-ID: <1157610402.254941.134040@p79g2000cwp.googlegroups.com>


Justin Ezequiel wrote:
> >   sockobj.bind(('',40007))
>
> tried on my N6600 with same error
>
> try using your phone's IP instead of the empty string ''
>
> tried sockobj.bind(('127.0.0.1',40007)) and did not get an error

I didn't get an error either, but the whole thing hangs up, and I am
forced to abort the program. This has happend quite a few times
already.
Did it work for you normally?

Thanks



From metaperl at gmail.com  Tue Sep 12 19:43:18 2006
From: metaperl at gmail.com (metaperl)
Date: 12 Sep 2006 16:43:18 -0700
Subject: Are Python's reserved words reserved in places they dont need to
	be?
In-Reply-To: <1158073855.390554.75750@e3g2000cwe.googlegroups.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1158073855.390554.75750@e3g2000cwe.googlegroups.com>
Message-ID: <1158104598.658388.241640@d34g2000cwd.googlegroups.com>


Istvan Albert wrote:
> metaperl wrote:
> > -->  python -i
> > >>> class = "algebra"
> >   File "<stdin>", line 1
> >     class = "algebra"
> >           ^
> > SyntaxError: invalid syntax
>
> Designing a syntax to avoid all possible newbie errors is impractical
> because as soon as you are finished with one iteration the new newbies
> will start making different kinds of errors...

You are missing the point: the point is that the above could be
considered correct if the rules of Python were that an assignment
statement takes
IDENTIFIER '=' LVALUE

Also  "class" IDENTIFIER COLON could also be considered correct.

>
> Take solace in the fact that you've been immediately notifed of the
> error while its fix: renaming pass to passwd is trivial ...

Again in certain automatic mapping circumstances (ORMs being the most
obvious, CSV to Python data another), it is not always convenient or
desirable or semantically articulate to do so. 

> 
> i.



From jjl at pobox.com  Sat Sep 16 20:21:49 2006
From: jjl at pobox.com (John J. Lee)
Date: Sun, 17 Sep 2006 00:21:49 GMT
Subject: Mechanoid Web Browser - Recording Capability
References: <1158444725.761382.138710@b28g2000cwb.googlegroups.com>
Message-ID: <87ejubxrz5.fsf@pobox.com>

"Seymour" <seymour.morris at gmail.com> writes:
[...]
> struggling otherwise and have been trying to learn how to program the
> Mechanoid module (http://cheeseshop.python.org/pypi/mechanoid) to get
> past the password protected site hurdle.
> 
> My questions are:
> 1. Is there an easier way to grab these pages from a password protected
> site, or is the use of Mechanoid a reasonable approach?
[...]

Again, can't speak for mechanoid, but it should be straightforward
with mechanize (simplifiying one of the examples from the URL below):


http://wwwsearch.sourceforge.net/mechanize/

br = Browser()
br.add_password("http://example.com/protected/", "joe", "password")
br.set_debug_http(True)  # Print HTTP headers.
br.open("http://www.example.com/protected/blah.html")
print br.response().read()


John


From brian at sweetapp.com  Wed Sep 27 04:28:53 2006
From: brian at sweetapp.com (Brian Quinlan)
Date: Wed, 27 Sep 2006 10:28:53 +0200
Subject: A critique of cgi.escape
In-Reply-To: <Xns984ABA8B57753castleamber@130.133.1.4>
References: <slrnehig0d.9o0.jon+usenet@snowy.squish.net>	<mailman.698.1159283878.10491.python-list@python.org>
	<Xns984ABA8B57753castleamber@130.133.1.4>
Message-ID: <451A3645.4050802@sweetapp.com>

John Bokma wrote:
>> Why cgi.escape should NOT be changed:
>> o it is current used in lots of code and changing it will almost
>>    certainly break some of it, test suites at minimum e.g.
>>    assert my_template_system("<p>{foo}</p>", foo='"') == '<p>"</p>'
> 
> You must be kidding.

Nope. How do you write your templating system unit tests?

>> o escaping attribute values is less common than escaping element
>>    text
> 
> Again, you must be kidding: href="/search.cgi?query=3&results=10"
> 

Actually, I wasn't kidding. I was basing this belief on greping through 
the Python standard library where only the quote=None form is ever used. 
It also matches my experience. But I don't have a large enough sample to 
make any claim either way.

Cheers,
Brian


From jonas.esp at googlemail.com  Sat Sep  9 12:38:54 2006
From: jonas.esp at googlemail.com (GinTon)
Date: 9 Sep 2006 09:38:54 -0700
Subject: EyeDB Object Database (ODBMS) - Python wrapper
Message-ID: <1157819934.666486.280360@i42g2000cwa.googlegroups.com>

EyeDB is a free ODBMS based on the ODMG 3 specification with
programming interfaces for C++ and Java. It is very powerfull, mature,
safe and stable. In fact, it was developed in 1992 for the Genome View
project althought rewritten in 1994, and has been used in a lot of
bioinformatics projects

http://www.eyedb.org/

Python does not have any programming interface to ODBMS and I believe
that it would be very interesting that the Python community could
access to a great object database like this one.

If somebody is interested could to using SIP as Python wrapper. PyQT4
bindings were made with SIP
http://www.riverbankcomputing.co.uk/sip/

These are the conclusions of several Python wrappers that shows that
SIP generates the fastest wrappers:
http://people.web.psi.ch/geus/talks/europython2004_geus.pdf

*  Manual wrapping is still fastest and most versatile
*  SIP, Boost and Babel generate native extension modules with low
overhead
*  SWIG-generated modules rely on pure Python wrapper module and
introduce a large overhead
*  Wrapper tool highlights:
     - SIP generates the fastest wrappers
     - SWIG is mature and well documented
     - Boost.Python most elegant integration of C++ and Python
     - Babel supports languages as both target and source

If you want to know more about ODBMS here you have some interesting
links:

http://en.wikipedia.org/wiki/Object_database
http://www.dacs.dtic.mil/techs/oodbms2/oodbms-toc.shtml
http://www.kuro5hin.org/?op=displaystory;sid=2001/5/3/32853/11281
http://www.odbms.org/introduction_whenODBMS.html
http://archive.devx.com/dbzone/articles/sf0801/sf0801-1.asp



From fredrik at pythonware.com  Sun Sep  3 11:24:22 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 17:24:22 +0200
Subject: Pmw installation problem
In-Reply-To: <1157296709.599747.252980@p79g2000cwp.googlegroups.com>
References: <1157292166.731947.150210@p79g2000cwp.googlegroups.com>	<mailman.10310.1157292624.27775.python-list@python.org>
	<1157296709.599747.252980@p79g2000cwp.googlegroups.com>
Message-ID: <edes35$4qp$1@sea.gmane.org>

vedran_dekovic at yahoo.com wrote:

>> where did you copy what files?  you're supposed to place the *entire*
>> Pmw directory somewhere on your path (e.g. under site-packages).  see
>>
>>      http://pmw.sourceforge.net/doc/starting.html
 >
> All files (.py),I was copy in lib

have you tried copying the Pmw *directory* instead ?

</F>



From steve at holdenweb.com  Thu Sep 28 05:43:12 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 28 Sep 2006 10:43:12 +0100
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <451B2EBF.6050501@stuartbishop.net>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
	<451B2EBF.6050501@stuartbishop.net>
Message-ID: <efg5du$26c$1@sea.gmane.org>

Stuart Bishop wrote:
[...]
> If you are using a modern PostgreSQL (8.1 for sure, maybe 8.0), this is
> better spelt:
> 
> cur.execute("SELECT currval(pg_get_serial_sequence(%s, %s))" % (
>     tableid, columnid))
> 
> (Assuming of course your table name and column name don't contain odd
> characters like = or ' or ., in which case you need to properly quote them).
> 
> The reason it is better is that in odd cases the sequence name will not
> always be %(tableid)s_%(columnid)s_seq, such as after you have renamed a table.
> 
Thank you! I've been looking for this for about six months - it helps to 
provide portability, and my current techniques relied on standard naming 
of the sequences.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From jon+usenet at unequivocal.co.uk  Sun Sep 24 20:50:23 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 00:50:23 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
Message-ID: <slrnehe9ub.rk8.jon+usenet@snowy.squish.net>

In article <mailman.518.1159087749.10491.python-list at python.org>, Fredrik Lundh wrote:
>> Making cgi.escape always escape the '"' character would not break
>> anything, and would probably fix a few bugs in existing code. Yes,
>> those bugs are not cgi.escape's fault, but that's no reason not to
>> be helpful. It's a minor improvement with no downside.
> 
> the "improvement with no downside" would bloat down the output for 
> everyone who's using the function in the intended way,

By a miniscule degree. That is a very weak argument by any standard.

> and will also break unit tests.

Er, so change the unit tests at the same time?

> > One thing that is flat-out wrong, by the way, is that cgi.escape()
> > does not encode the apostrophe (') character.
> 
> it's intentional, of course:

I noticed. That doesn't mean it isn't wrong.

> you're supposed to use " if you're using cgi.escape(s, True) to
> escape attributes.  again, punishing people who actually read the
> docs and understand them is not a very good way to maintain
> software.

In what way is anyone being "punished"? Deliberately retaining flaws
and misfeatures that can easily be fixed without damaging
backwards-compatibility is not a very good way to maintain software
either.

> btw, you're both missing that cgi.escape isn't good enough for general 
> use anyway,

I'm sorry, I didn't realise this was a general thread about any and
all inadequacies of Python's cgi module.

> since it doesn't deal with encodings at all.

Why does it need to? cgi.escape is (or should be) dealing with
character strings, not byte sequences. I must admit,
internationalisation is not my forte, so if there's something
I'm missing here I'd love to hear about it.

By the way, if you could try and put across your proposed arguments as
to why you don't favour this suggested change without the insults and
general rudeness, it would be appreciated.


From antoine at vo.lu  Sat Sep 30 14:11:45 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Sat, 30 Sep 2006 20:11:45 +0200
Subject: builtin regular expressions?
In-Reply-To: <87lko1w9m8.fsf@gmail.com>
References: <451e37a5$1@news.vo.lu>
	<87k63ly1gi.fsf@gmail.com>	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de>
	<877izlxsiy.fsf@gmail.com>	<efm4se$mm2$1@mlucom4.urz.uni-halle.de>
	<451ea5cc$1@news.vo.lu> <87lko1w9m8.fsf@gmail.com>
Message-ID: <451eb32d$1@news.vo.lu>

Jorge Godoy wrote:
> Antoine De Groote <antoine at vo.lu> writes:
> 
>> Just to get it clear at the beginning, I started this thread. I'm not a newbie
> 
> Sorry :-)  I got to this wrong conclusion because of the way I read your
> message.

no problem ;-) maybe my formulation was a bit naive, too...

> 
>> an expert either, but I'm quite comfortable with the language by now. It's
>> just that, when I started Python I loved it for its simplicity and for the
>> small amount of code it takes to get something done. So the idea behind my
> 
> See that being "small" is not all that important.  From the Zen of Python:
> 
>     Explicit is better than implicit.
> 
>> original post was that the Perl/Ruby way takes even less to type (for the
>> regex topic of this discussion, I'm not generalizing), and that I like a
>> lot. To me (and I may be alone) the Perl/Ruby way is more "beautiful" (Python
>> culture: Beautiful is better than ugly) than the Python way (in this
>> particular case) and therefore I couldn't see the reasons.
> 
> You can import the re module and use regular expressions in Python, but you
> probably know that.

yes I know that ...   ;-) again

> 
>> Some of you say that this regex stuff is used rarely enough so that being
>> verbose (and therefore more readable ?) is in these few cases the better
>> choice. To me this a perfectly reasonable and maybe it is just true (as far as
>> one can talk about true/false for something subjective as this). I dont' know
>> (yet) ;-)
> 
> It is to me. :-)  If you're parsing simple structures then it might not be to
> you (for complex structures you'd end up with some sort of parser).
> 
>> I just have to learn accept the fact that Python is more verbose more often
>> than Ruby (I don't know Perl really). Don't get me wrong though, I know the
>> benefits of this (at least in some cases) and I can understand that one opts
>> for it. Hopefully I will end up some day preferring the Python way.
> 
> One thing that is also interesting: code completion.  One editor can help you
> write "startswith" but it can't help with "/^".  The same goes for "endswith"
> compared to "$/".  
> 
> I just mentioned this because in the argument of "less code to write leads to
> less bugs" doesn't mean that we have typed all what is written :-)
> 

Excellent point! Love it :-) Helps me overcome it.

Regards,
antoine


From gagsl-py at yahoo.com.ar  Fri Sep 22 15:58:20 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Fri, 22 Sep 2006 16:58:20 -0300
Subject: new string method in 2.5 (partition)
In-Reply-To: <ef04oo$gcc$4@lust.ihug.co.nz>
References: <40XPg.6$1n3.149@news.tufts.edu>
	<4510425e$0$12250$636a55ce@news.free.fr>
	<mailman.299.1158709371.10491.python-list@python.org>
	<4511845b$0$4523$e4fe514c@news.xs4all.nl>
	<mailman.354.1158791333.10491.python-list@python.org>
	<ef04oo$gcc$4@lust.ihug.co.nz>
Message-ID: <7.0.1.0.0.20060922165123.02062e70@yahoo.com.ar>

At Friday 22/9/2006 04:53, Lawrence D'Oliveiro wrote:

> > ... a python string has both a length *and* a null terminator (for
> > ease of interfacing C routines ...
>
>How does that work for strings with embedded nulls? Or are the C routines
>simply fooled into seeing a truncated part of the string?

This is for simple char* strings, ASCIIZ. If your C code can accept 
embedded nulls, surely has made other provisions - like receiving the 
buffer length as a parameter. If not, it will see only a truncated string.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From python at hope.cz  Mon Sep 25 14:54:21 2006
From: python at hope.cz (Lad)
Date: 25 Sep 2006 11:54:21 -0700
Subject: Is there a regular expression for finding email address  ?
Message-ID: <1159210461.378231.307430@i42g2000cwa.googlegroups.com>

Did anyone try to find out a regular expression for finding an email
address in a text?
Thank you for the reply
L.



From roy at panix.com  Tue Sep 26 19:44:07 2006
From: roy at panix.com (Roy Smith)
Date: Tue, 26 Sep 2006 19:44:07 -0400
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <roy-35245C.19440626092006@reader2.panix.com>

John Salerno <johnjsal at NOSPAMgmail.com> wrote:
> But what if you are an expert Python program and have zero clue about 
> other languages? Can you still earn a living that way, or do most/all 
> companies require multiple language proficiency?

Nobody likes a one-trick pony.


From python.list at tim.thechases.com  Mon Sep 25 12:44:30 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 25 Sep 2006 11:44:30 -0500
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be>
Message-ID: <4518076E.1060907@tim.thechases.com>

> def remapmysql(a):
>      return (a[0], (a[1:]))
> 
> def test_map():
>      count = 100000 # count of simulated records
>      l1 = range(0, count)
>      l2 = range(count , 2 * count )
>      l3 = range(2 * count, 3 * count )
>      z1 = zip(l1, l2, l3) # simulate a mysql resultset
> 
>      d1 = dict(map(remapmysql,z1))
> 
>      return d1

I'm not sure the map() is needed, as it could just be

 >>> d1 = dict((row[0], row[1:]) for row in z1)

which worked in my tests.

However either seems to work fairly well.

-tkc








From steve at holdenweb.com  Fri Sep 22 12:34:30 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 12:34:30 -0400
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <1158940317.354847.323490@h48g2000cwc.googlegroups.com>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>	<mailman.451.1158926238.10491.python-list@python.org>	<ef0uur$aa1$1@mouse.otenet.gr>
	<1158940317.354847.323490@h48g2000cwc.googlegroups.com>
Message-ID: <ef139c$mkk$1@sea.gmane.org>

Paul Boddie wrote:
> Ilias Lazaridis wrote:
[...]
>>Have those old style classes any benefits?
> 
> 
> That you don't have to write the bizarre conceptual accident that is
> "(object)" when declaring a "top-level" class?
> 
Though of course the easiest way to enforce your classes to new style is 
to begin each module with

__metaclass__ = type

  >>> __metaclass__ = type
  >>> class X: pass
  ...
  >>> X
<class '__main__.X'>
  >>> X()
<__main__.X object at 0x186c6f0c>
  >>> x = X()
  >>> isinstance(x, object)
True
  >>> type(x), type(X)
(<class '__main__.X'>, <type 'type'>)
  >>>

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From python at hope.cz  Thu Sep 21 03:21:30 2006
From: python at hope.cz (Lad)
Date: 21 Sep 2006 00:21:30 -0700
Subject: Is it possible to change a picture resolution with Python?
In-Reply-To: <m9c4h214piecdn0c5qe5g02990h7n4bv6p@4ax.com>
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
	<1158768080.415936.41750@i3g2000cwc.googlegroups.com>
	<m9c4h214piecdn0c5qe5g02990h7n4bv6p@4ax.com>
Message-ID: <1158823290.157982.311910@h48g2000cwc.googlegroups.com>


Tim Roberts wrote:
> "Lad" <python at hope.cz> wrote:
>
> >from
> >> image:
> >> http://www.pythonware.com/library/pil/handbook/image.htm
> >>
> >> This is some example code:
> >>
> >> from PIL import Image
> >> im = Image.open("1.jpg")
> >> nx, ny = im.size
> >> im2 = im.resize((int(nx*1.5), int(ny*1.5)), Image.BICUBIC)
> >> im2.save("2.png")
> >>
> >> Bye,
> > bearophile,
> >Thank you for your reply.
> >But the above code increases size only , but not DPI resolutions(
> >vertical nad horizontal).I need  a higher  vertical and horisontal
> >resolutions.
>
> I'm not convinced that you know what you are asking for.
>
> Let's say you have an image that is 300x300 pixels, that is tagged as being
> 100 dpi.  Such an image is expected to be printed at a 3" x 3" size.
>
> Now, if you want to increase the dpi to 300 dpi, what does that mean?  Does
> it mean you want that same picture to be printed at a 1" x 1" size?  If so,
> then all you need to change is the picture header.  It will still be
> 300x300 pixels, and the file will be the same number of bytes.
>
> Or, do you mean that you want the picture to continue to print as 3" x 3",
> but to have three times as many pixels in each direction?  That means you
> have to increase the number of pixels to 900x900.  That's exactly what the
> code above is doing.  The image file will be 9 times larger.

Tim ,
Thank you for the explanation,
And I must also thank you all you others, who helped me.
Particularly,  bearophile and Max.

Now I use the following code , that provided bearophile,

from PIL import Image
im = Image.open("output3.jpg")
nx, ny = im.size
im2 = im.resize((int(nx*2.5), int(ny*2.5)), Image.BICUBIC)
im2.save("2000.png",dpi=(520,520))


and very important thing was dpi=(520,520) that provided Max,
L.



From the.great.alexander.the.great at gmail.com  Fri Sep 22 08:45:55 2006
From: the.great.alexander.the.great at gmail.com (xandeer)
Date: 22 Sep 2006 05:45:55 -0700
Subject: noob question
Message-ID: <1158929155.890221.107680@i3g2000cwc.googlegroups.com>

where is a good open-source project website?
thank-you
(sorry for being so annoying)(if I'm annoying)(if not then I'm not
sorry)



From g.brandl-nospam at gmx.net  Mon Sep 25 10:24:26 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 16:24:26 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehfomg.6tm.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
Message-ID: <ef8oqr$9pt$1@news.albasani.net>

Jon Ribbens wrote:
> In article <mailman.569.1159192888.10491.python-list at python.org>, Fredrik Lundh wrote:
>>> There's nothing to say that cgi.escape should take them both into account
>>> in the one function
>> 
>> so what exactly are you using cgi.escape for in your code ?
> 
> To escape characters so that they will be treated as character data
> and not control characters in HTML.
> 
>>> What precisely do you think it would "break"?
>> 
>> existing code, and existing tests.
> 
> I'm sorry, that's not good enough. How, precisely, would it break
> "existing code"? Can you come up with an example, or even an
> explanation of how it *could* break existing code?

Is that so hard to see? If cgi.escape replaced "'" with an entity reference,
code that expects it not to do so would break.

Georg


From joel.sjoo at gmail.com  Wed Sep  6 04:53:39 2006
From: joel.sjoo at gmail.com (joel.sjoo at gmail.com)
Date: 6 Sep 2006 01:53:39 -0700
Subject: Import a textfile to MS SQL with python
In-Reply-To: <mailman.67.1157530419.5279.python-list@python.org>
References: <mailman.67.1157530419.5279.python-list@python.org>
Message-ID: <1157532819.805247.131600@m79g2000cwm.googlegroups.com>

i know the bulk instert functions i ms sql but i will use this script
for oracle in a linux enviroment to so i think python is a good choice.


regard joel



From gdamjan at gmail.com  Thu Sep 21 00:53:08 2006
From: gdamjan at gmail.com (Damjan)
Date: Thu, 21 Sep 2006 06:53:08 +0200
Subject: naming objects from string
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>
	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>
	<1158813236.493366.122600@k70g2000cwa.googlegroups.com>
Message-ID: <45121a25$0$75030$14726298@news.sunsite.dk>

manstey wrote:

> Hi,
> 
> But this doesn't work if I do:
> 
> a=object()
> x='bob'
>  locals()[x] = a
>
> How can I do this?

try
sys.modules[__name__].__dict__[x] = a

But what's the point?


-- 
damjan


From steve at holdenweb.com  Thu Sep  7 15:10:11 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 20:10:11 +0100
Subject: Automate Web Configuration
In-Reply-To: <1157651299.957385.96190@b28g2000cwb.googlegroups.com>
References: <1157651299.957385.96190@b28g2000cwb.googlegroups.com>
Message-ID: <edpqpc$1p5$3@sea.gmane.org>

D wrote:
> I would like to write a program that will automate the configuation of
> a firewall or router via HTTPS.  So, I need to import the applicable
> certificate, and be able to configure the unit as if I was
> typing/selecting the appropriate fields manually using a web browser.
> If there is a command-line based tool that would allow me to do this, I
> would be more than willing to give it a try.  Otherwise, is there a
> Python library that would do the same?  Thanks.
> 
Look for the Mechanize and ClientForm libraries: they can be used to 
automate all sorts of web tasks.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sjmachin at lexicon.net  Wed Sep 27 08:45:12 2006
From: sjmachin at lexicon.net (John Machin)
Date: 27 Sep 2006 05:45:12 -0700
Subject: baffling sql string
In-Reply-To: <451a6cc4@127.0.0.1>
References: <451a6cc4@127.0.0.1>
Message-ID: <1159361112.081409.25620@k70g2000cwa.googlegroups.com>

DarkBlue wrote:
> Following is a code snippet from a pythoncard app
> the problem is with the sql string called iq1
> If either mysubject or mytalktext contains an
> apostrophe the update fails :
> Example: mysubject="Let's Eat"  this fails
>          mysubject="Lets Eat"   this works fine
>
> What options do I have to avoid this issue but still
> can use apostrophes in my input data ?
>
> mysubject=self.components.TextField1.text
> mytalktext=self.components.TextArea1.text
> mymsgno=self.myamsgno
> iq1="update MSGTALK set msgdate='NOW',subject='%s',talktext='%s' where
> msgno= %d " % (mysubject,mytalktext,mymsgno)

Your SQL after the % formatting will read something like this:
    update ... set ... subject='Let's Eat',talktext=....
which is illegal SQL syntax -- if a string constant contains an
apostrophe, it must be doubled:
     ... subject='Let''s Eat', ...
which would require you to do data.replace("'", "''") on each text
column. In general, % formatting is *not* a good idea, for this reason
and also because it leaves you wide open to an SQL injection attack. It
is much better to use the placeholder system, and let the called
software worry about inserting apostrophes, converting date formats,
etc etc. So:

iq1="""\
update MSGTALK
set msgdate='NOW', subject=?, talktext=?
where msgno= ?
"""

self.cur.execute(iq1, (mysubject,mytalktext,mymsgno))

Your [unspecified] DBMS adaptor may use some other placeholdet than
"?"; this will be documented in its manual .....

HTH,
John



From skip at pobox.com  Wed Sep 13 10:29:47 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 13 Sep 2006 09:29:47 -0500
Subject: eval(repr(object)) hardly ever works
In-Reply-To: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
References: <slrnegg4b0.jo5.matt@mwilson.umlcoop.net>
Message-ID: <17672.5595.275982.500266@montanaro.dyndns.org>


    Matthew> I understand that idea of an object's __repr__ method is to
    Matthew> return a string representation that can then be eval()'d back
    Matthew> to life, but it seems to me that it doesn't always work.

No, where it's convenient that property is desirable.  It's not a
hard-and-fast rule though.  Some objects (think open files) it would be
impossible (or nearly so) to generate a representation which captured the
state of the object.  For others (basic types or containers of them), it's
pretty easy.

    Matthew> It seems to work for types like integers and dictionaries and
    Matthew> lists, but not for much else.

    Matthew> Any thoughts?

Sure, if you want to save and restore objects, pickle or marshal them.
Don't rely on repr().

Skip


From MonkeeSage at gmail.com  Sat Sep 30 15:35:23 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 12:35:23 -0700
Subject: Native MP3 Decoder?
References: <1159642557.521873.32650@m7g2000cwm.googlegroups.com>
Message-ID: <1159644923.702983.96310@m73g2000cwd.googlegroups.com>

floguy at gmail.com wrote:
> If anyone knows of another project like this, an alternative that I
> haven't found yet, or has experience in mp3 decoding, please respond
> with your thoughts.

There's pymad ( http://spacepants.org/src/pymad/ ); haven't tried but
it should work everywhere libmad does.

Regards,
Jordan



From ilias at lazaridis.com  Fri Sep  1 12:54:55 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 1 Sep 2006 09:54:55 -0700
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <44f85fb1$0$1783$636a55ce@news.free.fr>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
	<44f85fb1$0$1783$636a55ce@news.free.fr>
Message-ID: <1157129694.958006.40250@i3g2000cwc.googlegroups.com>


?/? Bruno Desthuilliers ??????:
> lazaridis_com wrote:
> > John Salerno wrote:
> >> Are there any major differences between these two? It seems they can
> >> both be used with TurboGears, and SQLAlchemy with Django. I'm just
> >> wondering what everyone's preference is, and why, and if there are even
> >> more choices for ORM.
> >>
> >> Thanks.
> >
> > You can review the Persit Case, which will shortly evaluate the stated
> > ORM's:
> >
> > http://case.lazaridis.com/wiki/Persist
> >
> > It is possibly of importance to remember some requirements which should
> > be relevant for an persistency mechanism targetting an OO language:
>
> RDBMS are not "persistency mechanism", they are data management tools.

possibly.

but this is not relevant, as the "Persist" case does not deal with
RDBMS.



From steve at holdenweb.com  Tue Sep 19 14:09:10 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 19 Sep 2006 14:09:10 -0400
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158683411.737232.42380@b28g2000cwb.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>	<1158675276.965270.174860@m7g2000cwm.googlegroups.com>	<1158679802.962227.15200@b28g2000cwb.googlegroups.com>
	<1158683411.737232.42380@b28g2000cwb.googlegroups.com>
Message-ID: <eepbmo$c8u$1@sea.gmane.org>

Ilias Lazaridis wrote:
> MonkeeSage wrote:
> 
>>Ilias Lazaridis wrote:
>>
>>>How do I do this?
>>
>>It's easy:
>>
>>def writeDebug(msg):
>>  print "I do not debug things, I _evaluate_ with professionals on the
>>industries! See ticket 547!\n" \
>>        "Oh yeah, and %s" % msg
> 
> 
> where do I place this function...
> 
> 
>>...
>>class Foo:
>>  writeDebug("how can I configure the interpreter for understand
>>Klingon participals and noun-phrases? Must I rectify the standard
>>dictionaries first?")
> 
> 
> ....thus it becomes available within class "Foo" and all other Classes?
> 
> Something like a central import?
> 
> ..
> 
Good grief ...
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From mark.hoemmen at gmail.com  Wed Sep 27 05:37:47 2006
From: mark.hoemmen at gmail.com (mark.hoemmen at gmail.com)
Date: 27 Sep 2006 02:37:47 -0700
Subject: Computer Language Popularity Trend
In-Reply-To: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
Message-ID: <1159349867.827187.270390@h48g2000cwc.googlegroups.com>


Xah Lee wrote:
> Computer Language Popularity Trend
>
> This page gives a visual report of computer languages's popularity, as
> indicated by their traffic level in newsgroups. This is not a
> comprehensive or fair survey, but does give some indications of
> popularity trends.
>
> http://xahlee.org/lang_traf/index.html

Careful there with the sweeping generalizations and quick judgments
about languages :)

Furthermore, it's nice to conclude that Lisp is getting more popular,
but we also have to take into account global trends (maybe more people
are using usenet in general? maybe the total number of programmers in
the world is increasing?).

Still, it's nice to see trends plotted out like that, thanks for the
work :)

mfh



From gonhidi at gmail.com  Tue Sep  5 10:02:19 2006
From: gonhidi at gmail.com (=?ISO-8859-1?Q?Gonzalo_HIGUERA_D=CDAZ?=)
Date: Tue, 5 Sep 2006 16:02:19 +0200
Subject: Finding name of variable?
In-Reply-To: <42d22dbf0609050649pe2c3cc3sdd0f577351d87b3f@mail.gmail.com>
References: <42d22dbf0609050649pe2c3cc3sdd0f577351d87b3f@mail.gmail.com>
Message-ID: <411f59bd0609050702n2520883ah5795de9e93ea0315@mail.gmail.com>

2006-09-05 15:49 +0200, Gardner Pomper <gardner at networknow.org>:
> Hi,
>
> I am writing a specialized xml serialization function, and I would like to
> be able to serialize the value of a simple object with the object name as
> the tag. For example:
>
>    first_name = 'Fred'
>
>   sXML = my_xml_serializer(first_name)
>
> should result in sXML = '<first_name>Fred</first_name>'
>
> I can get class and field names, but how do I find the name of a simple
> variable?

A recent thread[1] might be a useful starting point.


[1] "how do you get the name of a dictionary?" URL:
<http://mail.python.org/pipermail/python-list/2006-August/357006.html>

-- 
Gonzalo HIGUERA D?AZ <gonhidi at gmail.com>


From eurleif at ecritters.biz  Sat Sep 16 15:36:16 2006
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Sat, 16 Sep 2006 15:36:16 -0400
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
Message-ID: <450c51eb$0$21518$4d3efbfe@news.sover.net>

nicolasfr at gmail.com wrote:
> I am a bit disapointed with the current Python online documentation. I
> have read many messages of people complaining about the documentation,
> it's lack of examples and the use of complicated sentences that you
> need to read 10 times before understanding what it means.
> 
> That's why I have started a collaborative project to make a user
> contributed Python documentation. The wiki is online here:
> http://www.pythondocs.info

I agree that Python's docs could use improvement, and I love the idea of 
using a Wiki for the purpose. But maybe MediaWiki would be a better 
choice of software? Dokuwiki's syntax looks foreign and a little bit 
intimidating to me, but Wikipedia has made pretty much everyone familiar 
with MediaWiki's syntax. Less syntax to learn lowers the cost of entry, 
which should lead to more contributors.


From MonkeeSage at gmail.com  Mon Sep 25 13:24:33 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 25 Sep 2006 10:24:33 -0700
Subject: gtk.Entry Colors
References: <L8wRg.16872$mj5.1449@read3.inet.fi>
	<1159121638.446784.137070@b28g2000cwb.googlegroups.com>
	<dNKRg.27$S_5.15@read3.inet.fi>
Message-ID: <1159205073.814981.231690@d34g2000cwd.googlegroups.com>

Tuomas wrote:
> Yes, I read the reference before posting here. I tried something like:

Hi Tuomas,

I didn't mean to say that you hadn't read the docs (I had a hard time
finding the right methods in the docs too, even though I know the
methods); I just wanted to give you the references so you could see the
method signatures and the other gdk.Color options. :)

Regards,
Jordan



From tim at tdw.net  Fri Sep 29 13:22:39 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 29 Sep 2006 18:22:39 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <B53648592.350.1547.1@mx-extra>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<9afea2ac0609290826m5e1cfa77v2be3b06c7ab575cd@mail.gmail.com>
	<G53642238.475.1301.1@mx-extra>
	<9afea2ac0609290857l867f432g5725b5e9efc6ec00@mail.gmail.com>
	<B53648592.350.1547.1@mx-extra>
Message-ID: <9afea2ac0609291022n2975fc64gaae152233d0b2493@mail.gmail.com>

On 29/09/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Tim Williams wrote:
>
> > So that I know my mistake, which bit fails (the text from
> > sys.exc_info()[1]?? ) , or is it all complete rubbish - and not
> > do-able -  on a *nix system ?
>
> opening a file for writing doesn't lock it on Unix.  if you want
> locking, you need other mechanisms, and I'm not sure any of them
> work properly on all configurations, under all circumstances.
>
> (there's a reason why people are still using "1970s technology"
> to do locking on Unix...)

Thanks for that Fredrik

.


From bblais at bryant.edu  Fri Sep 22 21:39:41 2006
From: bblais at bryant.edu (Brian Blais)
Date: Fri, 22 Sep 2006 21:39:41 -0400
Subject: Does Python provide "Struct" data structure?
In-Reply-To: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>
References: <1158936980.959486.304260@i3g2000cwc.googlegroups.com>
Message-ID: <4514905D.6020808@bryant.edu>

Daniel Mark wrote:
> 
> 1> Does Python provide such Struct in this standard libary.
> Python has "4.3 struct -- Interpret strings as packed binary data", but
> it looks like different
> from what I really want to get.

I like the following version:

class Struct(dict):

     def __getattr__(self,name):

         try:
             val=self[name]
         except KeyError:
             val=super(Struct,self).getattr(self,name)

         return val

     def __setattr__(self,name,val):

         l=dir(self)

         if name in self:
             super(Struct,self).setattr(self,name,val)
         else:
             self[name]=val


it has the added benefit of having all of the dict methods too.


				bb

-- 
-----------------

              bblais at bryant.edu
              http://web.bryant.edu/~bblais


From __peter__ at web.de  Sat Sep 30 04:47:18 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 30 Sep 2006 10:47:18 +0200
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
	<7xk63l7p67.fsf@ruckus.brouhaha.com>
Message-ID: <eflarf$nbe$01$1@news.t-online.com>

Paul Rubin wrote:

> Sybren Stuvel <sybrenUSE at YOURthirdtower.com.imagination> writes:
>> I must say that the for/else construct is a LOT more readable than the
>> rewritten alternatives.
> 
> They are all pretty ugly.  I prefer the genexp version with a
> hypothetical "is_empty" function:
> 
>      all_heights = (block.height for block in stack if block.is_marked())
>      if is_empty(all_heights):
>         raise SomeError("No marked block")

Such a function would have to rebind the generator:

def check_empty(items):
    items = iter(items)
    try:
        first = items.next()
    except StopIteration:
        return False
    return chain([first], items)

all_heights = check_empty(all_heights)
if not all_heights:
    raise SomeError

>      heights = sum(all_heights)
> 
> Python generators don't really work the right way for this though.

You can make it work, but the result tends to be messy:

from itertools import chain

def raiseiter(exc, *args):
    raise exc(*args)
    yield None # unreachable
def stop():
    raise StopIteration

height = sum(block.height for block in chain(stack, raiseiter(SomeError)) if
    (not block.is_marked()) or stop())

Peter


From sferriol at imag.fr  Mon Sep  4 06:28:41 2006
From: sferriol at imag.fr (Sylvain Ferriol)
Date: Mon, 04 Sep 2006 12:28:41 +0200
Subject: a new object definition
In-Reply-To: <8OOdnRGqXrgDxWXZnZ2dnUVZ_vOdnZ2d@comcast.com>
References: <ed8rce$ikn$1@trompette.imag.fr>
	<8OOdnRGqXrgDxWXZnZ2dnUVZ_vOdnZ2d@comcast.com>
Message-ID: <44FBFFD9.9020406@imag.fr>

> Michele Simionato already pointed you to `PEP 359`_.  One of the reasons 
> that I withdrew it was that people seemed to feel that you could get 
> most of what you want now by defining appropriate metaclasses.  In your 
> case, for example, the appropriate metaclass and its usage might look 
> like::
> 
>     >>> def instance(name, bases, dict):
>     ...     cls = dict.pop('__class__')
>     ...     dict.pop('__metaclass__')
>     ...     dict.pop('__module__') # silently added by class statement
>     ...     return cls(**dict)
>     ...
>     >>> class C(object):
>     ...     def __init__(self, a, b):
>     ...         self.a = a
>     ...         self.b = b
>     ...
>     >>> class c:
>     ...     __metaclass__ = instance
>     ...     __class__ = C
>     ...     a = 'foo'
>     ...     b = 'bar'
>     ...
>     >>> c.a, c.b
>     ('foo', 'bar')
> 
> Sure, it's misleading to use a class statement when you're not actually 
> creating a class, but I guess people felt that wanting to do this was 
> uncommon enough that they weren't worried about it.
>
i know that there is always a solution. But this problem show that 
python and others are not coherent in the syntax (contrary to lisp for 
example).

with the 'make' syntax, it will be really easy to translate a program or 
a data structure defined in XML format into python syntax.

i do not know how many use-cases we need for changing a PEP status :)

another advantage is that we have the same syntax in all definition 
levels: metaclass, class, instance.
and if we just want to use objects and do a sort of 'prototype 
programming', we can with this syntax.
example:
instance my_obj(prototype_obj):
   ...
   ... object specialisation
   ...

sylvain



> .. _PEP 359: http://www.python.org/dev/peps/pep-0359/
> 
> STeVe


From jaysherby at gmail.com  Thu Sep 28 14:12:34 2006
From: jaysherby at gmail.com (Jay)
Date: 28 Sep 2006 11:12:34 -0700
Subject: vector and particle effects
Message-ID: <1159467154.884505.131680@b28g2000cwb.googlegroups.com>

I'd like to experiment a little bit with vector graphics in python.
When I say 'vector graphics' I don't mean regular old svg-style.  I
mean vector game style as in simulation of vector beam drawn graphics.
If you still don't know what I'm talking about, see Grid Wars 2
(http://gridwars.marune.de/) or Battlezone
(http://en.wikipedia.org/wiki/Battlezone).

Anyway, I need help choosing a module or modules to support this.
Would pygame support this or should I try pyopengl?  Or is there a
better module for this?

Any tutorials for the basics would be GREATLY appreciated.



From egnur at t-online.de  Mon Sep 18 11:32:21 2006
From: egnur at t-online.de (Dirk Runge)
Date: Mon, 18 Sep 2006 17:32:21 +0200
Subject: How to stop a running embedded interpreter?
Message-ID: <4n7sfkF8vac5U1@uni-berlin.de>

Hi!

I have embedded Python in an C++ App.
The Python-Interpreter is running in its own
Thread (I'm using PThreads).

I use PyRun_SimpleString to run Python-Code that the user entered
in an editorwindow.
I want the user to be able to stop the execution of
Python-Code (e.g. using a Cancel-Button).
Unfortunately I can't find a way to do this.

Of course, I can kill the Interpreter-Thread forcibly with 
pthread_cancel() but the App will crash if I call any Python API-
Function afterwards.

I thought about starting 2 Threads in Python: One thread checks for a 
stop condition (by calling a C-function that checks the Cancel-Button) 
and the user-code runs in a second thread. The Problem with this 
approach is that there seems to be no possibility for one Python-thread 
to kill another.
I don't want the user to have to check fo a stop condition himself either.

Any help is greatly appreciated.

Regards,
Dirk


From martin at v.loewis.de  Mon Sep 25 17:25:03 2006
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Mon, 25 Sep 2006 23:25:03 +0200
Subject: installation of python-dev
In-Reply-To: <4nq6t6FatrroU1@uni-berlin.de>
References: <4e4935ac0609241334p617d8fabq9f6ce1e30883ee38@mail.gmail.com>
	<mailman.567.1159191962.10491.python-list@python.org>
	<4nq6t6FatrroU1@uni-berlin.de>
Message-ID: <4518492F.8020009@v.loewis.de>

Diez B. Roggisch schrieb:
> I guess it is some linuxish system, as he talks about dev-packages.
> Unfortunately, quite a few distros (debian based ones and Suse to my
> knowledge) in fact remove distutils from the core and make it available as
> extra devel package. For whatever reason...

I guess the reason is that distutils requires Makefile and pyconfig.h,
which are traditionally only installed with the -dev package. Also,
the main function of distutils is similar to that of a compiler and
of the make(1); these are also traditionally considered as "development"
packages.

IOW, everything that is needed to "install from source"
is considered "development", even if the user of the tool does not
actual develop the software (but only wants to install it).
This, in turn, comes from the view that you don't normally need
to install from source (and thus don't need developer tools),
since your Linux distributions has all your software precompiled.

Regards,
Martin


From http  Tue Sep 26 11:22:45 2006
From: http (Paul Rubin)
Date: 26 Sep 2006 08:22:45 -0700
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<Xns984996E6BABCEduncanbooth@127.0.0.1>
	<slrnehfogu.6tm.jon+usenet@snowy.squish.net>
	<Xns98499CF9DCEE4duncanbooth@127.0.0.1>
	<slrnehfr5g.6tm.jon+usenet@snowy.squish.net>
	<mailman.672.1159275735.10491.python-list@python.org>
	<slrnehia6n.9o0.jon+usenet@snowy.squish.net>
	<mailman.680.1159277904.10491.python-list@python.org>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
Message-ID: <7xu02u1wl6.fsf@ruckus.brouhaha.com>

Brian Quinlan <brian at sweetapp.com> writes:
> o cgi.escape is not meant for serious web application development,

What is it meant for then?  Why should the library ever implement
anything in a half-assed way unsuitable for serious application
development, if it can supply a robust implementation instead?

Your other points are reasonable.  I like the idea of adding an option
to escape single quotes, but I don't care much what the defaults are.

I notice that the options for pickle.dump/dumps changed incompatibly
between Python 2.2 and 2.3, and nobody really cared.


From enleverlesX.XmcX at XmclaveauX.com  Sun Sep 17 14:37:31 2006
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI)
Date: Sun, 17 Sep 2006 20:37:31 +0200
Subject: Hardlinks on NTFS
References: <mailman.208.1158512901.10491.python-list@python.org>
Message-ID: <450d95fc$0$25912$ba4acef3@news.orange.fr>

Hi!

Here, a copy of a message send on anither newsgroup (by me).




Summary on hardlink & junction-point.

*** Sorry, this text is in french ; but command & links are good. ***

Synth?se sur les hardlinks et les points de jonction.


   - Les hardlinks sont des alias sur des fichiers.
   - Les points de jonction sont des alias sur des r?pertoires.



A)  Hardlink

Pour cr?er des hardlinks, le mieux est d'utiliser  fsutil.exe
Tapez   fsutil create hardlink  [Entr?e] pour voir la syntaxe

Fsutil n'est pas fourni avec W2K, mais le fichier de XP fonctionne tr?s
bien.

Pour conna?tre la liste des hardlinks, il existe   hlscan.exe  , fourni avec
le Windows-resource-kit

Quelques infos de plus, par l'aide de windows, en cherchant  "hardlink"



B)  Point de jonction

Un point de jonction permet de consid?rer un volume, une unit?, ou un
r?pertoire, comme un sous-r?pertoire. Il s'agit alors d'un alias, avec
r?percussion instantan?e des modifications.

Dans un DIR, les points de jonction apparaissent avec <JONCTION> ? la place
de <REP>

Pour cr?er un point de jonction, il existe  linkd.exe  , fourni avec le
Windows-resource-kit
Linkd.exe permet aussi le suppression des points de jonction (mais RD
fonctionne aussi bien)

Pour une aide sur linkd :   linkd /?  (fallait y penser, hein!)

Un article MS sur les points de jonction :
http://support.microsoft.com/Default.aspx?kbid=205524

Quelques renseignements dans l'aide de windows, ? "point jonction"
(glossaire).  Chercher aussi "lecteur mont?"





Faites de beaux r?ves.

Michel Claveau




From onurb at xiludom.gro  Thu Sep 28 07:24:44 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 13:24:44 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.873.1159439669.10491.python-list@python.org>
References: <mailman.1980.1159437004.10490.python-list@python.org>
	<mailman.873.1159439669.10491.python-list@python.org>
Message-ID: <451bb0fc$0$24723$626a54ce@news.free.fr>

Brendon Towle wrote:
> Some of your Lisp translations are subtly off...

Seems correct to me. Lisp lists are linked lists, not arrays.

> 
>> Date: 28 Sep 2006 02:49:50 -0700
>> From: "sturlamolden" <sturlamolden at yahoo.no>
>> Subject: Re: Questions on Using Python to Teach Data Structures and
>>     Algorithms
>> To: python-list at python.org
>>
>> If you want to make a chained structure, then perhaps you know LISP?
>> This is what the basic machinery of LISP looks like in Python:
>>
>> def cons(a,b)
>>    return [a,b]
> 
> should be:
>     return [a].extend(b)

A Lisp cons is made of a reference to it's content and a reference to
the rest of the list, so cons = lambda a, b : [a, b] seems the most
straightforward translation.

>> def car(structure)
>>    return structure[0]
>>
>> def cdr(structure)
>>    return structure[1]
> 
> should be:
>     return structure[1:]

idem.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From MonkeeSage at gmail.com  Sat Sep 30 03:56:38 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 30 Sep 2006 00:56:38 -0700
Subject: for: else: - any practical uses for the else clause?
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
	<mailman.984.1159565565.10491.python-list@python.org>
	<9AF*oH2rr@news.chiark.greenend.org.uk>
	<7xr6xus2hv.fsf@ruckus.brouhaha.com>
	<slrnehs8bd.ncj.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1159602998.922101.81850@c28g2000cwb.googlegroups.com>

Sybren Stuvel wrote:
> I must say that the for/else construct is a LOT more readable than the
> rewritten alternatives.

+1

I just wish it had a more intuitive name like "after:" or "then:", as
"else:" seems like a choice between the loop and the other block (but
really the choice is between StopIteration and break).

Regards,
Jordan



From johnjsal at NOSPAMgmail.com  Sat Sep 30 23:00:43 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 23:00:43 -0400
Subject: question about scope
Message-ID: <451f2fa7$0$14757$c3e8da3@news.astraweb.com>

I have the following code:



class DataAccessFrame(wx.Frame):

     menu_items = [('File', 'New Database', 'New Record', 'Open 
Database...',
                    'Open Record...', 'Save Record', 'Save All Records',
                    'Close Record', 'Close Database'),
                   ('Edit', 'Undo', 'Redo', 'Cut', 'Copy', 'Paste'),
                   ('Help',)]

     def __init__(self):
         wx.Frame.__init__(self, None, title='Database Access Panel')
         panel = wx.Panel(self)
         self.create_menubar()
#       notebook = wx.Notebook(panel)

#       sizer = wx.BoxSizer()
#       sizer.Add(notebook, 1, wx.EXPAND)
#       panel.SetSizer(sizer)

     def create_menubar(self):
         menubar = wx.MenuBar()
         for item in self.menu_items:
             menu = wx.Menu()
             menubar.Append(menu, item[0])
             for subitem in item[1:]:
                 menu.Append(-1, subitem)
         self.SetMenuBar(menubar)

In the create_menubar method, I got an error about the global name 
"menu_items" not being defined, and this was fixed by putting "self." in 
front of the variable name.

But why is this necessary? Doesn't a method look in its enclosing class, 
or is that not one of the levels of scope?


From daniel.dittmar at sap.com  Mon Sep  4 12:41:42 2006
From: daniel.dittmar at sap.com (Daniel Dittmar)
Date: Mon, 04 Sep 2006 18:41:42 +0200
Subject: threading support in python
In-Reply-To: <mailman.10336.1157379308.27775.python-list@python.org>
References: <mailman.10336.1157379308.27775.python-list@python.org>
Message-ID: <edhl07$b2t$1@news.sap-ag.de>

km wrote:
> Is there any PEP to introduce true threading features into python's
> next version as in java? i mean without having GIL.
> when compared to other languages, python is fun to code but i feel its
> is lacking behind in threading

Some of the technical problems:

- probably breaks compatibility of extensions at the source level in a 
big way, although this might be handled by SWIG, boost and other code 
generators
- reference counting will have to be synchronized, which means that 
Python will become slower
- removing reference counting and relying on garbage collection alone 
will break many Python applications (because they rely on files being 
closed at end of scope etc.)

Daniel


From email at christoph-haas.de  Sun Sep 17 08:38:01 2006
From: email at christoph-haas.de (Christoph Haas)
Date: Sun, 17 Sep 2006 14:38:01 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158460304.822650.114560@d34g2000cwd.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.188.1158442368.10491.python-list@python.org>
	<1158460304.822650.114560@d34g2000cwd.googlegroups.com>
Message-ID: <200609171438.01491.email@christoph-haas.de>

On Sunday 17 September 2006 04:31, Brad Allen wrote:
> Here is an idea for improving Python official documentation:
>
> Provide a tab-based interface for each entry, with the overview/summary
> at the top-level, with a row of tabs underneath:
>         1. Official documentation, with commentary posted at the bottom
> (ala Django documentation)
>         2. Examples wiki
>         3. Source code browser with a folding/docstring mode
>         4. Bugs/To-Do

I like your idea. The MySQL documentation site just came up to my mind. 
Users can write comments to articles there. And the documentation team can 
pick them up and include them in the official documentation. What annoys 
me most about the Python documentation is that it may be technically 
complete but a human being will never figure out how to solve the puzzle 
of 50 class methods without getting a proper example. It's like showing 
some non computer scientists a syntax diagram to get them started with 
something.

For today I plan to check out the SVN repository containing the official 
Python documentation and see how well I can contribute. But since many 
people are probably good Python programmers but less good in maintaining 
complex documentation structures (especially in LaTeX) it might help to 
allow more direct contributions. Ubuntu's Launchpad for example contains a 
component where anyone can help translate docstrings for Debian/Ubuntu 
packages. No more knowledge needed.

At least it doesn't appeal to me if Python's documentation team says "just 
open up a bug report on sourceforge - we will deal with the rest". Perhaps 
this is a decent approach considering the quality of contributions. I 
can't tell.

 Christoph


From Mark.Geyzer at gmail.com  Tue Sep 19 09:13:40 2006
From: Mark.Geyzer at gmail.com (volcano)
Date: 19 Sep 2006 06:13:40 -0700
Subject: Formatting device from a script on Windows
In-Reply-To: <1158667747.585634.156370@m73g2000cwd.googlegroups.com>
References: <1158657724.805015.165750@b28g2000cwb.googlegroups.com>
	<1158660534.275633.43240@h48g2000cwc.googlegroups.com>
	<1158667747.585634.156370@m73g2000cwd.googlegroups.com>
Message-ID: <1158671620.738762.134380@h48g2000cwc.googlegroups.com>

OK, it worked. Obviosly, quick format was a bad choice.

Thanks a lot for your help!
Mark



From deets at nospam.web.de  Mon Sep 25 16:41:54 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 22:41:54 +0200
Subject: R.S.I. solutions?
In-Reply-To: <mailman.605.1159216535.10491.python-list@python.org>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>	<4nqrt0Fbp16mU1@uni-berlin.de>
	<mailman.605.1159216535.10491.python-list@python.org>
Message-ID: <4nqt8jFbiv7jU1@uni-berlin.de>

skip at pobox.com schrieb:
>     Diez> I bought a TouchStream keyboard and could recommend it - but
>     Diez> unfortunately they are out of business.
> 
> Is this what you're referring to?
> 
>     http://www.fingerworks.com/ST_product.html

Yup.

Diez


From goykhmanster at gmail.com  Sun Sep 17 21:58:34 2006
From: goykhmanster at gmail.com (goykhmanster at gmail.com)
Date: 17 Sep 2006 18:58:34 -0700
Subject: Where can i download mod_webkit from?
Message-ID: <1158544714.687305.163330@m73g2000cwd.googlegroups.com>

Hi

I am trying to get webware for python running on Apache.  I want to get
it working with mod_webkit, but for the life of me i can't find a
webpage where i can download a source for it or maybe an rpm.  If
anyone knows the download page, i'd greatly appreciate if you share it
with me.

Thanks



From mensanator at aol.com  Tue Sep 12 13:57:46 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 12 Sep 2006 10:57:46 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
	<mailman.364.1158075349.5279.python-list@python.org>
	<1158081840.659296.286340@b28g2000cwb.googlegroups.com>
	<mailman.377.1158082452.5279.python-list@python.org>
Message-ID: <1158083866.689838.150070@p79g2000cwp.googlegroups.com>


Fredrik Lundh wrote:
> mensanator at aol.com wrote:
>
> > So, knowing that, would you agree that
> >
> > <quote Python Library Reference 13.13>
> > If switching to a larger database such as PostgreSQL or Oracle
> > is later necessary, the switch should be relatively easy.
> > </quote>
> >
> > is misleading if not outright untruthful?
>
> eh?  if you've never migrated *from* SQLite to some other database, how
> can *you* possibly know *anything* about how hard or easy it is?

Because I can extrapolate. I *know* before even trying it that
if I export all my data from a sqlite db to a csv file and then try
to import it into Access that there will be problems if the fields
aren't static typed.

That's one of the reasons why I was such a good test engineer.
I could anticipate problems the design engineers didn't think of
and I would deliberately provoke those problems during testing
and crash their hardware/software.

I wasn't very popular.

> 
> </F>



From sybrenUSE at YOURthirdtower.com.imagination  Tue Sep 26 06:04:46 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Tue, 26 Sep 2006 12:04:46 +0200
Subject: where are isinstance types documented?
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
Message-ID: <slrnehhupu.mes.sybrenUSE@schuimige.stuvel.eu>

codefire enlightened us with:
> I'm using the isinstance built-in function. I've found the docs for
> it, but there are no docs on the supported types.

All types/classes are supported.

> For example isinstance(a, int) works fine but isinstance(s, string)
> doesn't - because 'string is not known'.

That is because 'string' is not a class:

    print "abc".__class__.__name__

The name is 'str', not 'string'.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From duncan.booth at invalid.invalid  Wed Sep 20 04:33:34 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 20 Sep 2006 08:33:34 GMT
Subject: byte count unicode string
References: <mailman.315.1158736972.10491.python-list@python.org>
	<1158737974.490027.71860@k70g2000cwa.googlegroups.com>
	<1158739949.355384.178660@e3g2000cwe.googlegroups.com>
Message-ID: <Xns9844612827EEAduncanbooth@127.0.0.1>

"MonkeeSage" <MonkeeSage at gmail.com> wrote:

> John Machin wrote:
>> The answer is, "You can't", and the rationale would have to be that
>> nobody thought of a use case for counting the length of the UTF-8  form
>> but not creating the UTF-8 form. What is your use case?
> 
> Playing DA here, what if you need to send the byte-count on a server
> via a header, but need the utf8 representation for the actual data?

Then you still need both the data and its length. John asked for an example 
where you need only the length and not the data itself.

I guess you could invent something like inserting a string into a database 
which has fixed size fields, silently truncates fields which are too long 
and stores the strings internally in utf-8 but only accepts ucs-2 in its 
interface. Pretty far fetched, but if it exists I suspect that an extra 
utf-8 encoding here or there is the least of your problems.


From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep  4 11:48:14 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 4 Sep 2006 17:48:14 +0200
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
Message-ID: <slrnefoilu.q8f.sybrenUSE@schuimige.stuvel.eu>

km enlightened us with:
> Is there any PEP to introduce true threading features into python's
> next version as in java? i mean without having GIL.

What is GIL? Except for the Dutch word for SCREAM that is...

> when compared to other languages, python is fun to code but i feel
> its is lacking behind in threading

What's wrong with the current threading? AFAIK it's directly linked to
the threading of the underlying platform.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From ramasridhar.kasturi at gmail.com  Thu Sep  7 01:37:29 2006
From: ramasridhar.kasturi at gmail.com (sridhar)
Date: 6 Sep 2006 22:37:29 -0700
Subject: sending emails using python
Message-ID: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>

iam having user account on an exchangeserver.
with that can i send an email using python?

if iam using the following code iam getting error


fromAddress = 'sridhar_kasturi at satyam.com'
toAddress = 'sridhar_kasturi at satyam.com'
msg = "Subject: Hello\n\nThis is the body of the message."
import smtplib
server = smtplib.SMTP("hstmsg002",25)
server.sendmail(fromAddress, toAddress, msg)

error:

Traceback (most recent call last):
  File
"C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout\InitialMailExample.py",
line 5, in ?
    server = smtplib.SMTP("hstmsg002",25)
  File "C:\Python24\lib\smtplib.py", line 244, in __init__
    (code, msg) = self.connect(host, port)
  File "C:\Python24\lib\smtplib.py", line 307, in connect
    (code, msg) = self.getreply()
  File "C:\Python24\lib\smtplib.py", line 351, in getreply
    raise SMTPServerDisconnected("Connection unexpectedly closed")
SMTPServerDisconnected: Connection unexpectedly closed



From __peter__ at web.de  Sat Sep 23 07:51:28 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 23 Sep 2006 13:51:28 +0200
Subject: Python and checked exceptions
References: <1159009493.872015.33880@d34g2000cwd.googlegroups.com>
Message-ID: <ef3712$vna$00$1@news.t-online.com>

Kay Schluehr wrote:

> A new cookbook recipe suggesting two decorators @throws and @catches
> for treatment of checked exceptions in Python:
> 
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498131
> 
> This might be of practical interest for some and theoretical interest
> for others - in particular those who know checked ex as a language
> feature of Java.

Probably not what you wanted:

>>> test()
Raises UncheckedExceptionError(exceptions.ZeroDivisionError) -> OK
Raises ZeroDivisionError -> OK
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "checked_exceptions.py", line 134, in test
    test4(3,2)
UnboundLocalError: local variable 'test4' referenced before assignment

Peter


From sybrenUSE at YOURthirdtower.com.imagination  Mon Sep 25 06:06:26 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Mon, 25 Sep 2006 12:06:26 +0200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
Message-ID: <slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>

Duncan Booth enlightened us with:
> I think his point was that any '%' characters inside name act like
> wildcards whereas his version looked for literal percents.

But of course.

> This could be an argument for having a utility function to escape
> the wildcards for this sort of situation, but certainly not an
> argument for his proposed QuoteSQL.

Indeed. An escaping function should be small and not do all kinds of
escaping for different situations at once.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From python.list at tim.thechases.com  Sun Sep 24 18:49:30 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Sun, 24 Sep 2006 17:49:30 -0500
Subject: ruby %w equivalent
In-Reply-To: <1159137139.987228.294950@i42g2000cwa.googlegroups.com>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<1159137139.987228.294950@i42g2000cwa.googlegroups.com>
Message-ID: <45170B7A.40505@tim.thechases.com>

>> is there a python equivalent for the ruby %w operator?
>> %w{a b c} creates an array with strings "a", "b", and "c" in ruby...
>>
> 
> | >>> "a b c".split()
> | ['a', 'b', 'c']
> 
> ... appears to match your single example.

bah, far to easy to understand...add a little line-noise, man, 
and it will be closer to ruby/perl.

Maybe something like

 >>> from string import split as _
 >>> _("a b c")
['a', 'b', 'c']

or perhaps

 >>> "a b c".split
 >>> _()
['a', 'b', 'c']

to give it that perl/ruby-ish feel of terseness and obscurity.

And people wonder why I like python... :)

-tkc






From peonleon at gmail.com  Tue Sep  5 06:44:47 2006
From: peonleon at gmail.com (Leon)
Date: 5 Sep 2006 03:44:47 -0700
Subject: Higher-level OpenGL modules
Message-ID: <1157453086.806159.49430@d34g2000cwd.googlegroups.com>

Greetings,

Does anybody know of or is working on any python modules that allow for
a direct but higher-level interface to OpenGL? For example, quick
functions to draw lines, curves, and basic shapes; define hsb color
mode; fill and stroke operations; easy loading of images, svg files,
etc (much like the processing language -
http://www.processing.org/reference/index.html).  The closest thing I
could find was devachan - http://www.cesaremarilungo.com/sw/devachan/,
but its very limited. Any response would be greatly appreciated.

Thanks
Leon



From vbgunz at gmail.com  Sat Sep 16 15:18:35 2006
From: vbgunz at gmail.com (vbgunz)
Date: 16 Sep 2006 12:18:35 -0700
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <1158426726.483021.199700@h48g2000cwc.googlegroups.com>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<1158420540.813155.135850@k70g2000cwa.googlegroups.com>
	<1158422020.995631.61740@m7g2000cwm.googlegroups.com>
	<1158426726.483021.199700@h48g2000cwc.googlegroups.com>
Message-ID: <1158434315.834063.81160@e3g2000cwe.googlegroups.com>

> kodos does look good but I do not have the pyqt (maybe I am slightly
> off) interface to use it on my system..  with another graphic interface
> it would be a must try software.

on Ubuntu 6.06, the repos have this 'gtk2-engines-gtk-qt' and it makes
QT apps look really awesome on Gnome. Not sure about Windows *but* I am
sure something like it has to exist. Try looking into it. Good luck!



From wuwei23 at gmail.com  Wed Sep  6 01:20:39 2006
From: wuwei23 at gmail.com (alex23)
Date: 5 Sep 2006 22:20:39 -0700
Subject: Question about urllib and posting to an external script
References: <1157510385.199687.124670@m73g2000cwd.googlegroups.com>
Message-ID: <1157520039.573722.301850@e3g2000cwe.googlegroups.com>

evanpmeth at gmail.com wrote:
> all i want to do is post this form:
> HTML Code:
>
> <form method='POST' enctype='multipart/form-data'
> action='http://login.myspace.com/index.cfm?fuseaction=login.process&amp'>
> <input type="text" name="email" > <input type="password"
> name="password" > <input type="submit" value="Login"/>

Heya,

It might help to use one of the higher-level abstractions for dealing
with the web. twill (http://twill.idyll.org/) provides a simple
language for scripting web-based interactions.

The example they provide should be useable as a basis for what you
want:
++++
setlocal username <your username>
setlocal password <your password>

go http://www.slashdot.org/
formvalue 1 unickname $username
formvalue 1 upasswd $password
submit

code 200     # make sure form submission is correct!
++++

I _think_ twill is based on top of mechanize
(http://wwwsearch.sourceforge.net/mechanize/) which may be of use to
you if twill obscures or hides functionality you need.

Hope this helps.

-alex23



From claudio.grondi at freenet.de  Wed Sep  6 13:56:07 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Wed, 06 Sep 2006 19:56:07 +0200
Subject: IronPython 1.0 - Bugs or Features?
In-Reply-To: <8MqdneHW48EjaWPZnZ2dnUVZ_sednZ2d@comcast.com>
References: <edmlbv$a9h$1@newsreader2.netcologne.de>
	<8MqdneHW48EjaWPZnZ2dnUVZ_sednZ2d@comcast.com>
Message-ID: <edn23m$s6$1@newsreader2.netcologne.de>

Larry Bates wrote:
> Claudio Grondi wrote:
> 
>>(just wanted to share my experience with IronPython 1.0)
>>
>>The context:
>>  C:\IronPython> ipy.exe
>>  IronPython 1.0.60816 on .NET 2.0.50727.42
>>  Copyright (c) Microsoft Corporation. All rights reserved.
>>vs.
>>  C:\Python24> python.exe
>>  Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)]
>>on win32
>>
>>IronPython raises "UnboundLocalError: local variable 'strData'
>>referenced before assignment" error in following case:
>><code>
>>    while(someCondition):
>>      try:
>>        strData = strSomeValue()
>>      except:
>>        pass
>>      if( type(strData) == str ) : ### <<< HERE THE ERROR
>>        doSomething()
>></code>
>>CPython 2.4.2 doesn't raise an error with same code.
>>
>>As strData is not set anywhere before in the code it seems, that
>>IronPython is somehow right, but I am not sure if it is a bug or a feature.
>>
>>Another problem with IronPython where CPython 2.4.2 runs ok was while I
>>was trying to do:
>>  f = file(r'\\.\PhysicalDrive0', 'rb')
>>getting "ValueError: FileStream will not open Win32 devices such as disk
>>partitions and tape drives. Avoid use of "\\.\" in the path."
>>Here the same - I am not sure if it is a bug or a feature.
>>
>>Can someone knowledgeable elaborate on it a bit please?
>>
>>Claudio Grondi
> 
> 
> Your problem is a blanket exception handler that ignores
> the exception.  Blanket exceptions are almost always a
> bad idea.  Blanket exceptions with pass as the only
> command in the except: block is ALWAYS a bad idea.
> 
> Basically the line strData = strSomeValue() caused an
> exception.  Since it was inside a try: block, it then
> executed what was in the except: block.  Since all that
> was in the except: block was pass, it just fell through
> to the if statement.  At that point strData is not
> defined because the try block failed and never create
> strData object.
> 
> It is doing EXACTLY what you told it to do.
Sorry for the confusion caused, but you are right.
The actual code was a bit more complex, so I tried to get it down to the 
principle, but haven't expected, that
   f = file(r'\\.\PhysicalDrive0', 'rb')
buried within strSomeValue() throws an exception as in CPython the code 
was running ok.
So the second problem was the cause also for the first one ...
I also erroneously assumed, that the first problem was detected during 
parsing ... so, by the way: how can I distinguish an error raised while 
parsing the code and an error raised when actually running the code?

Claudio Grondi


From keith at keithperkins.net  Fri Sep 29 19:24:22 2006
From: keith at keithperkins.net (Keith Perkins)
Date: Fri, 29 Sep 2006 23:24:22 GMT
Subject: another distutils question
References: <mailman.966.1159552468.10491.python-list@python.org>
Message-ID: <pan.2006.09.29.23.24.21.541676@keithperkins.net>

On Fri, 29 Sep 2006 13:53:46 -0400, Eric S. Johansson wrote:

> is there anyway I can, in a setup.py file, set  and internal equivalent 
> to the '--install-scripts' commandline option?
> 
> script installation directory but I don't want on the command line where 
> things can go horribly wrong if the user forgets.  I would like to 
> create a new default setting  for this commandline option as well as a 
> couple of other such as the data default directory.
> 
> --- eric

On a similar note , I have another question about distutils and data files.
I have a little program that uses a txt file to store data, and it works
fine running it in it's own folder, if I install through distutils, using
sudo to get it to write to the site-packages folder (which root owns), it
installs the data file so that it is owned by root, and not by me, so
that the data file can't be written to (although the script can read it).
Do I need to run a post install script, or add something to setup.py file
to chown the file or am I doing something wrong?  There doesn't seem to be
anything on this in the docs.  
Thanks in advance,
Keith



From pmcgover at gmail.com  Mon Sep 25 07:32:41 2006
From: pmcgover at gmail.com (pmcgover at gmail.com)
Date: 25 Sep 2006 04:32:41 -0700
Subject: Converting Perl Web Report to Python
In-Reply-To: <YxERg.2095$o71.768@newsread3.news.pas.earthlink.net>
References: <1159016655.956844.27090@d34g2000cwd.googlegroups.com>
	<%5gRg.5231$UG4.3934@newsread2.news.pas.earthlink.net>
	<1159131929.131598.164460@i42g2000cwa.googlegroups.com>
	<YxERg.2095$o71.768@newsread3.news.pas.earthlink.net>
Message-ID: <1159183961.848544.142370@e3g2000cwe.googlegroups.com>

Thanks again Dennis,
This should do what I want with additional flexibility...  I will
develop the code later this week.   During this excersize, I have come
to really appreciate Python over Perl.  I love the Python command line
interpreter that allowed me to pretest any code very quickly.  What
Python learning resource (book web link or both) do you recommend?
Pat

Dennis Lee Bieber wrote:
> On 24 Sep 2006 14:05:29 -0700, "pmcgover at gmail.com" <pmcgover at gmail.com>
> declaimed the following in comp.lang.python:
>
>
> > download and install the required MySQLdb module.  In any event, I
> > would like to know how to search and replace a given string in the sql
> > to a user supplied value before execution.
> >
> 	I would not even want to try to code that. I will mention that the
> default mode for MySQLdb is to use %s as the substitution field, and
> since both scripts used the same SQL file...
>
> > For example, lets say that your sql script looks like this:
> > > -=-=-=-=-=-=-=-=-=-		script1.sql
> > select name, URL, description, occurs
> > from comics
> > where URL like '%MyParam_1%'        # Note that "MyParam_1" represents
> > a "catch" string.
> > order by name;
> > > -=-=-=-=-=-=-=-=-=-
> >
>  	select name, URL, description, occurs
> 	from comics
> 	where URL like %s
> 	order by name;
>
> Then, on the cursor.execute() call:
>
> > > cr.execute(query)   #no parameters assumed
>
> 	cr.execute(query, ("%" + MyParam_1 + "%",))
>
> {MySQLdb /can/ work with a singleton for convenience, but the DB-API
> emphasizes a tuple be passed, hence the (... ,) to create a tuple}
>
> 	I'm presuming you do not require the "user" to enter the % wildcards
> on search terms.
>
> 	MySQLdb can also be fed with a dictionary (last time I looked, at
> least) so something like:
>
>  	select name, URL, description, occurs
> 	from comics
> 	where URL like %(MyParam_1)s or URL like %(MyParam_2)s
> 	order by name;
>
> and
>
> 	params = {}
> 	params["MyParam_1"] = "%" + somevariable + "%"
> 	params["MyParam_2"] = "%" + anotherstring + "%"
> 	cr.execute(query, params)
>
> may be possible (I've never used this mode, so no confirmation).
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From carsten at uniqsys.com  Fri Sep 22 11:42:06 2006
From: carsten at uniqsys.com (Carsten Haese)
Date: Fri, 22 Sep 2006 11:42:06 -0400
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <1158938755.403604.91180@d34g2000cwd.googlegroups.com>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
	<4nibt5Fag01tU2@individual.net>
	<1158938755.403604.91180@d34g2000cwd.googlegroups.com>
Message-ID: <1158939726.11108.35.camel@dot.uniqsys.com>

On Fri, 2006-09-22 at 11:25, Saizan wrote:
> Bjoern Schliessmann wrote:
> > Saizan wrote:
> >
> > > Why subclassing bool from int either __invert__ or __neg__ haven't
> > > been overrided to produce a boolean negation?
> >
> > I wonder what -True or -False should evaluate to.
> Well in boolean notation -True == False and  -False == True, actually
> you may prefer ? or a line over the term, but since there's no such
> operator in python [...]

It's called "not":

>>> not True
False
>>> not False
True

-Carsten




From fdu.xiaojf at gmail.com  Thu Sep 21 09:25:03 2006
From: fdu.xiaojf at gmail.com (fdu.xiaojf at gmail.com)
Date: Thu, 21 Sep 2006 21:25:03 +0800
Subject: Is it possible to save a running program and reload next time
 ?
In-Reply-To: <FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>
References: <mailman.386.1158824225.10491.python-list@python.org>
	<FOrQg.4207$UG4.3040@newsread2.news.pas.earthlink.net>
Message-ID: <451292AF.7070007@gmail.com>

Dennis Lee Bieber wrote:
> On Thu, 21 Sep 2006 15:34:21 +0800, "fdu.xiaojf at gmail.com"
> <fdu.xiaojf at gmail.com> declaimed the following in comp.lang.python:
>
>   
>> Is it possible that the program can save all running data to a file when 
>> I want it to stop, and can reload the data and continue to run from 
>> where it stops when the computer is free ?
>>
>>     
> 	You'd have to write the code to save state, which means you'd have
> to be at a known resumable point... I suspect that, if you're nested
> into a recursive function, that will not be possible as you'd have to
> recreate the calling stack along with populating all know data.
>
> 	It should be pointed out that "chaos theory" sort of got its start
> from an attempt at doing something similar -- saving a massive data
> array for later reloading. It turns out the saved data didn't have the
> full resolution of the computations, so the restart from the saved data
> diverged rapidly from where the prior run had been heading. (As I
> recall, it was a weather simulation in the late 60s early 70s, and the
> data was saved in single-precision text format -- meaning round-off
> errors on output/input; these days it would be the equivalent of the
> losses inherent in doing a long computation in 80-bit IEEE, but saving
> intermediates [for reload] in 64-bit IEEE).
>
> 	The other option may not be available under most operating system...
> Namely a snapshot of the entire "core" of memory, so you can restore the
> machine /exactly/ to the state it had been at the time of the snapshot
> (this would probably affect everything on the machine -- all other
> programs, etc.)
>
>
> 	Though if someone else have more information contradicting me, I'd
> be happy to hear it... <G>
>   
Thank you all!

Can objects be saved and reloaded by "Pickle"  ?  I have tried but no
success.

One of my friends tell me that VMware can save the current state of a
virtual machine by suspending it, and can restore the identical state
later. When a virtual machine is suspended , a file with a .vmss
extension is created(about 20M), which  contains the entire state of the
virtual machine. When you resume the virtual machine, its state is
restored from the .vmss file.

So can this method be implemented with python ?

I have another idea. When python is running, it uses about 10M memory.
So can I just save a copy of the memory used by python and restore it
later ?

Regards,

xiaojf



From g.brandl-nospam at gmx.net  Wed Sep 27 14:29:24 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 20:29:24 +0200
Subject: Surprise using the 'is' operator
In-Reply-To: <mailman.814.1159377984.10491.python-list@python.org>
References: <mailman.746.1159307893.10491.python-list@python.org><451A9824.6040106@tobiah.org>	<efe7v1$8ls$1@news.albasani.net>
	<mailman.814.1159377984.10491.python-list@python.org>
Message-ID: <efefua$hrd$1@news.albasani.net>

Terry Reedy wrote:
> "Georg Brandl" <g.brandl-nospam at gmx.net> wrote in message 
> news:efe7v1$8ls$1 at news.albasani.net...
>> tobiah wrote:
>>> Suppose I fill an list with 100 million random integers in the range
>>> of 1 - 65535.  Wouldn't I save much memory if all of the ocurrances
>>> of '12345' pointed to the same integer object?  Why should more be made,
>>> when they all do the same thing, and are not subject to change?
>>
>> Because for typical usage of integers (which doesn't include your 
>> example),
>> it is more expensive to check if there's already an integer with that 
>> specific
>> value out there than to create a new one.
> 
> I am not sure what you are saying.  Every (C) int is checked to see if it 
> is in the preallocated range before making a new Python int object.  The 
> reason for the low limit is the various time-space tradeoffs applied across 
> the entire range of programs.

Maybe I phrased that misleadingly (expensive refering to memory space). In the
end, I wanted to say the same thing you did: it's a tradeoff between space and
time.

Georg


From skip at pobox.com  Mon Sep 25 13:47:10 2006
From: skip at pobox.com (skip at pobox.com)
Date: Mon, 25 Sep 2006 12:47:10 -0500
Subject: python interpreter on solaris 10
In-Reply-To: <1159205234.213553.164990@e3g2000cwe.googlegroups.com>
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
	<1159205234.213553.164990@e3g2000cwe.googlegroups.com>
Message-ID: <17688.5662.457957.537755@montanaro.dyndns.org>


    sam> does anyone know why i'm getting 'there is no installed viewer
    sam> capable of displaying the document'?

You probably need to associate files having .py file extensions with the
Python interpreter.  You've given no indication of the environment you're
using other than "Solaris 10".  There are several different desktop
environments available.  On my machine I have "Common Desktop Environment",
"Java Desktop System, Release 3" (really, it's mostly Gnome) and "Open
Windows".  I imagine how you make that association is different for each
desktop environment.

Skip


From cjlesh at gmail.com  Tue Sep 12 14:43:37 2006
From: cjlesh at gmail.com (cjl)
Date: 12 Sep 2006 11:43:37 -0700
Subject: Running python from a usb drive
In-Reply-To: <1cbgfbo86x0qs$.x3x3jblzihjx$.dlg@40tude.net>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
	<1158024872.905234.117100@m73g2000cwd.googlegroups.com>
	<1158026095.979937.206300@i42g2000cwa.googlegroups.com>
	<1158028522.981282.159760@m73g2000cwd.googlegroups.com>
	<1158063006.685269.66090@i3g2000cwc.googlegroups.com>
	<1cbgfbo86x0qs$.x3x3jblzihjx$.dlg@40tude.net>
Message-ID: <1158086616.546128.214230@i42g2000cwa.googlegroups.com>

Thorsten:

Thank you for your reply.

> Setting environment variables has only effect on the process itself
> and the subprocesses. This has nothing to do with Windows, it's the
> same with Linux.

True, and the changes to path and pythonpath are gone after I close the
console window, but the results of the assoc and ftype commands are
changes to the registry that linger. If I run my setup on a computer
that has python installed, I will overwrite the pre-existing registry
settings. I can restore them with a script, but I can't guarantee that
my restore script will run.

I'm still looking for a way to modify these temporarily, but it looks
like I might be "up the creek" on this one. Oh well.

Thanks again,
CJL



From jstroud at mbi.ucla.edu  Sat Sep 30 06:08:08 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 30 Sep 2006 10:08:08 GMT
Subject: MySQLdb for Python 2.5
In-Reply-To: <5_ednYPtY9vSSoDYnZ2dnUVZ_rqdnZ2d@insightbb.com>
References: <5_ednYPtY9vSSoDYnZ2dnUVZ_rqdnZ2d@insightbb.com>
Message-ID: <bmrTg.401$NE6.79@newssvr11.news.prodigy.com>

Harold Trammel wrote:
> Hi everyone,
> 
> Does anyone know the status of a version of MySQLdb that will work with 
> Python 2.5?  I will accept a workaround if you know one.  Thanks in 
> advance.
> 
> Harold Trammel

I could not find a way around this requirement, but you will want to 
manually add libz to your building with this version. This seems to be 
how to do this when you run setup.py:

      python setup.py -lz [other args] install

This is for mysqldb "MySQL-python-1.2.1_p2" (which I believe is the 
latest).

I built this a few days ago and finally tested today and got this 
terribly annoying (and apparently well documented) error:

[stacktrace clipped]
LookupError: unknown encoding: latin1_swedish_ci

My setup: python 2.5, very old mysql servers (C. 2003?), mysqldb 
1.2.1_p2. It seems the problem is related to mysqldb, but I'm not sure.

I found the only real work-around here:

   http://mail.python.org/pipermail/python-list/2006-July/350408.html

Its ugliness manifests in my code as such:


#######################################################################
# workaround function for problems with encoding
#######################################################################
def _csn(*args, **kwargs): return 'utf-8'

#######################################################################
# init_mysql()
#######################################################################
def init_mysql(the_db="some_db"):
   adb = MySQLdb.connect(
            host="sql.some.institute.edu",
            # charset="utf8", # <-- our mysql servers too old for this
            user="my_login",
            passwd="pa55w0rd",
            db=the_db
   )
   adb.character_set_name = instancemethod(_csn, adb, adb.__class__)
   return adb


This fix passes some initial rudimentary tests. No guarantees on proper
handling of unicode. If you are using unicode, you may want to test it 
thoroughly with this fix and report your results (preferably on this 
comp.lang.python).


James



From antroy at gmail.com  Thu Sep 14 08:00:32 2006
From: antroy at gmail.com (Ant)
Date: 14 Sep 2006 05:00:32 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1158206057.688002.144980@i42g2000cwa.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
Message-ID: <1158235232.604973.95400@h48g2000cwc.googlegroups.com>


Jay wrote:
> I, too, am a hardcore fan of jEdit.  It's nice to finally see some user
> support on this forum.  :-)

I quite often throw in jEdits name in these discussions. It's the most
powerful and extensible editor I know of outside of the emacs/vi world
(and far more accessible than those).



From steve at holdenweb.com  Fri Sep 22 11:40:01 2006
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 22 Sep 2006 11:40:01 -0400
Subject: CONSTRUCT - New/Old Style Classes, build-in/extension types
In-Reply-To: <ef0uur$aa1$1@mouse.otenet.gr>
References: <1158923250.815731.261980@k70g2000cwa.googlegroups.com>	<mailman.451.1158926238.10491.python-list@python.org>
	<ef0uur$aa1$1@mouse.otenet.gr>
Message-ID: <ef102u$8bb$1@sea.gmane.org>

Ilias Lazaridis wrote:
> Fredrik Lundh wrote:
> 
>>Ilias Lazaridis wrote:
>>
>>
>>>note: I am aware about search engines.
>>
>>but you're incapable of using them, or ?
> 
> 
> -
> 
> 
>>>I ask for documentation which other developers have found useful
>>
>>most recent Python books contains good discussions of the things you're
>>asking for.  maybe you should buy a book ?
> 
> 
> I'm interested in online resources, experiences etc..
> 
> Maybe you can clarify some things (for me and for readers):
> 
> Do I need old style classes?
> 
No, not for new code.

> Does the python standard library use old style classes?
> 
Yes, because it was easier to leave them as they were than risk 
introducing incompatibilities.

> Have those old style classes any benefits?
> 
> ..
> 
No.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From sigzero at gmail.com  Sat Sep 16 15:30:56 2006
From: sigzero at gmail.com (Robert Hicks)
Date: 16 Sep 2006 12:30:56 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <mailman.183.1158428804.10491.python-list@python.org>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.183.1158428804.10491.python-list@python.org>
Message-ID: <1158435056.459366.284230@i42g2000cwa.googlegroups.com>


Christoph Haas wrote:
> On Saturday 16 September 2006 19:16, nicolasfr at gmail.com wrote:
<snip>
>
> I second that the Python documentation is lacking. There is no software
> that is adequately documented anyway. Show me a man page of a Perl module
> and it takes me minutes to use it.

I would say that Perl module documentation is really good. Most of them
have plenty examples on how to use the module itself.

That said...the Python docs are open source. Just start going through
them and adding examples. It shouldn't be too hard and will benefit
everyone who use them.

Robert



From mikeowens at gmail.com  Tue Sep 12 12:41:56 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 11:41:56 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <7xy7spaysh.fsf@ruckus.brouhaha.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<7xy7spaysh.fsf@ruckus.brouhaha.com>
Message-ID: <df2316bd0609120941v4c949c76n9118533c0a7624c7@mail.gmail.com>

On 12 Sep 2006 08:29:34 -0700, Paul Rubin
<"http://phr.cx"@nospam.invalid> wrote:

> > > But no one appreciates my finding those faults.
> >
> > No one appreciates the tone in which you report these alleged faults,
>
> Your tone is not so great either.

And what would you expect after someone who has take little to no effort to

1. read the documentation

2. seek help in the appropriate places, or

3. raise concerns to the appropriate people

unjustly and publicly vilifies an otherwise wonderful volunteer effort
to provide a free, high-quality, open source software package?

> > necessarily agrees with the faults that you find, nor elected you
> > system test engineer of the SQLite project.
>
> It's an open source project, as you like to say.  Everyone is a test
> engineer.

Only real test engineers provide constructive feedback to the
appropriate places. Posting ill-informed flames to the Python mailing
list is hardly constructive feedback, or worthy of being called test
engineering.

> > > > standard as well. What's your position on that? Do some Googling and
> > > > you can easily find 18 ways that Oracle's PL/SQL deviates from the
> > > > standard. And T-SQL is plainly nowhere close.
> > >
> > > And how many of those systems use dynamic typing?
> >
> > And how many conform to the standard?
>
> How many of those deviations are justified in their documentation by
> the responsible parties claiming, in effect, that they're smarter than
> the standard's designers?

No one said they are smarter than anyone else in effect or otherwise,
but rather the SQLite project stated that it disagreed with static
typing. When you write free software, you have the freedom to write it
however you want, and that is the justification. This is the approach
that SQLite took, they are free to do so, and in no way have they been
deceptive about it.

And because SQLite deviates in this way does not make it any more
guilty of deviating or not conforming to the SQL standard than any
other SQL database.

> It seems obvious to me that there should, at minimum, be an option to
> turn this particular nonstandard behavior on and off.

Then the obvious means by which to accomplish this are like any other
open source project: At a minimum, post this suggestion to the mailing
list, write an RFE, or best of all, write the missing code yourself
and supply a patch to the bug list.


From johnjsal at NOSPAMgmail.com  Wed Sep 27 14:40:45 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Wed, 27 Sep 2006 18:40:45 GMT
Subject: ElementTree and proper identation?
In-Reply-To: <xuzSg.38$1n3.434@news.tufts.edu>
References: <iYySg.34$1n3.469@news.tufts.edu> <r4zSg.35$1n3.414@news.tufts.edu>
	<mailman.821.1159380838.10491.python-list@python.org>
	<JtzSg.37$1n3.434@news.tufts.edu> <xuzSg.38$1n3.434@news.tufts.edu>
Message-ID: <NAzSg.39$1n3.256@news.tufts.edu>

John Salerno wrote:

> Ok, I see that indent() returns None. In that case, how do I get the 
> formatted text that it produces?

Ok, through the magic of sight I noticed that it is an inplace change, 
so I tried indent(root) and then wrote root to a file with ElementTree 
as normal. Very nice!


From ilias at lazaridis.com  Sun Sep 24 15:29:19 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 24 Sep 2006 12:29:19 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <ef3hu5$a20$1@mouse.otenet.gr>
References: <ef3hu5$a20$1@mouse.otenet.gr>
Message-ID: <1159126159.462170.70420@d34g2000cwd.googlegroups.com>

Ilias Lazaridis wrote:
> IDLE has an output format like this:
>
>  >>> object
> <type 'object'>
>  >>> type
> <type 'type'>
>  >>> object.__class__
> <type 'type'>
>  >>> object.__bases__
>
> How can I customize it to become like that:
>
>  >>> object
>      <type 'object'>
>  >>> type
>      <type 'type'>
>  >>> object.__class__
>      <type 'type'>
>  >>> object.__bases__
>
> or that:
>
>  >>> object
>    : <type 'object'>
>  >>> type
>    : <type 'type'>
>  >>> object.__class__
>    : <type 'type'>
>  >>> object.__bases__
>
> (preferably without modifying code)

I assume this is not possible.

I am wondering that other users are not annoyed by this reduced
readability.

anyway.

.

> -- 
> http://lazaridis.com



From g.brandl-nospam at gmx.net  Mon Sep 25 10:28:27 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 16:28:27 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <4517e385$0$10996$636a55ce@news.free.fr>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
	<ef5nop$aoh$1@news01.versatel.de>
	<pan.2006.09.24.11.04.35.54758@gmx.net>
	<ef5pqm$bc8$1@news01.versatel.de>
	<pan.2006.09.25.09.33.24.175342@REMOVEME.cybersource.com.au>
	<4517e385$0$10996$636a55ce@news.free.fr>
Message-ID: <ef8p2c$9pt$2@news.albasani.net>

Christophe wrote:
> Steven D'Aprano a ?crit :
>> By memory, in an thread about the same topic just a few days ago, Fredrik
>> Lundh posted a link to Perl's FAQs that suggests a method for "validating"
>> email addresses: treat it like a password and ask the user to type it
>> twice. That will protect against simple typos and input errors.
> 
> I hate that thing. When I see that, I type my email once and copy/paste 
> into the second edit box. This is useless AND annoying at the same time.

It may be for you, but there certainly are users that misspel their
e-mail address more frequently, just like passwords. And therefore it's a
nice touch to spare both the original submitter and the owner of the
misspelled address more work.

Georg


From sjmachin at lexicon.net  Sat Sep 23 22:11:35 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 19:11:35 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159061888.165073.105510@h48g2000cwc.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
Message-ID: <1159063894.894541.3180@b28g2000cwb.googlegroups.com>


Pete wrote:
> Fade in to episode II...
>
> > ...
> > This is compiling a *constant* regular expression, and works OK on the
> > Windows distribution of Python 2.4.3 :
>
> Hmmmm. Here's the version information stuff:
>
> Python 2.4.2 (#1, Feb 12 2006, 03:59:46)
> [GCC 4.1.0 20060210 (Red Hat 4.1.0-0.24)] on linux2
>
> I'm going to upgrade Python and see if that has any effect...
> I'm running this on a Fedora Core 5 box...
>
> > ...
> > You appear to be running 2.4.n; what is n, and exactly which *x
> > platform are you running it on? Perhaps a file in /usr/lib/python2.4 is
> > corrupt, but we won't know until you give the *full* traceback. Do you
> > get the same results when you try what I did at the interpreter
> > interactive prompt?
>
> The error I received was from the interactive prompt thing.

So I noticed from your first posting. Now do what you were asked: try
what I did.

> Is there
> some way I can get more verbose information or something that would be
> more helpful?
>

Yes, just include the whole traceback!!! Example of what I mean is
below:

| C:\junk>copy con wally.py
| guff = 1 / 0
| ^Z
|         1 file(s) copied.
|
| C:\junk>python
| Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
on win32
| Type "help", "copyright", "credits" or "license" for more
information.
| >>> import wally
| Traceback (most recent call last):
|   File "<stdin>", line 1, in ?

Your posting appeared truncated when viewed with both Google groups and
in a regular newsreader.
There is no guarantee that the last line shown is the one that caused
the error.
Just as if this example were missing the following lines, we don't know
which
source line caused the error, nor even what the error was!!

|   File "wally.py", line 1, in ?
|     guff = 1 / 0
| ZeroDivisionError: integer division or modulo by zero

HTH,
John



From steve at holdenweb.com  Wed Sep 20 13:21:54 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 20 Sep 2006 13:21:54 -0400
Subject: Nested Looping SQL Querys
In-Reply-To: <8veQg.10183$v%4.4387@newsread1.news.pas.earthlink.net>
References: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>
	<8veQg.10183$v%4.4387@newsread1.news.pas.earthlink.net>
Message-ID: <eerta2$dhl$1@sea.gmane.org>

Dennis Lee Bieber wrote:
[...]
> # not conn.execute()   ? That's what all the DB-API compliant adapters
> use
> 
> 	result = conn.execute(sql, params)
> 
.execute() is a cursor method, not a connection method. Some DB API 
modules do implement it as a connection method, but that makes it 
impossible for several cursors to share the same connection (which is 
allowed by some modules).

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From python.sam at googlemail.com  Wed Sep 20 18:39:32 2006
From: python.sam at googlemail.com (sam)
Date: 20 Sep 2006 15:39:32 -0700
Subject: "list index out of range" error
References: <1158787569.955853.223030@h48g2000cwc.googlegroups.com>
	<pan.2006.09.20.21.54.45.550086@gmx.net>
	<1158789483.004773.21840@k70g2000cwa.googlegroups.com>
Message-ID: <1158791972.525026.113530@i3g2000cwc.googlegroups.com>

for what it's worth. and it is approx. five times quicker than the
bubblesort i wrote to begin with on a 286-word highly unordered list,
so i wasn't wasting my time after all...

______________________________________________________________________
import time

file_input = open('wordlist.txt', 'r')

list_initial = []

no_lines = 0

for line in file_input:
    list_initial.append(line)
    no_lines += 1

no_lines_2 = no_lines

print list_initial

file_input.close()

raw_input('press enter to sort: ')

list_final = []
temp_str = ""

time1 = time.clock()

for j in range(no_lines_2):

    temp_str = 'zzzzzzzzzzzzzzzzzz'
    for k in range(no_lines):
        if temp_str > list_initial[k]:
            temp_str = list_initial[k]
    list_initial.remove(temp_str)
    list_final.append(temp_str)
    no_lines -= 1

time2 = time.clock()
final_time = time2 - time1
print list_final
print
print 'number of seconds for sort list: ', final_time
print
print 'number of words in list: ', no_lines_2
___________________________________________________________________

thanks again for your help. that sorted out something that had really
been bugging me.



From nogradi at gmail.com  Sat Sep 30 13:59:39 2006
From: nogradi at gmail.com (Daniel Nogradi)
Date: Sat, 30 Sep 2006 19:59:39 +0200
Subject: loop over list and modify in place
In-Reply-To: <5f56302b0609301045t37f4f0e3qb30f542180883316@mail.gmail.com>
References: <5f56302b0609301045t37f4f0e3qb30f542180883316@mail.gmail.com>
Message-ID: <5f56302b0609301059r554e7be8u5f74eeca51ab6fe7@mail.gmail.com>

> Is looping over a list of objects and modifying (adding an attribute
> to) each item only possible like this?
>
> mylist = [ obj1, obj2, obj3 ]
>
> for i in xrange( len( mylist ) ):
>     mylist[i].newattribute = 'new value'
>
>
> I'm guessing there is a way to do this without introducing the (in
> principle unnecessary) index i, so what I'm really looking for is a
> looping method which doesn't pass references to the values of the
> items but to the items themselves.

Please consider the previous question as an arbitrary random brain
cell fluctuation whose probability of occurence is around once per
month and before sending the question it hasn't yet happened to me in
September.


From __peter__ at web.de  Fri Sep 29 16:42:57 2006
From: __peter__ at web.de (Peter Otten)
Date: Fri, 29 Sep 2006 22:42:57 +0200
Subject: Automatic methods in new-style classes
References: <1159555077.389908.160490@e3g2000cwe.googlegroups.com>
Message-ID: <efk0db$moa$02$1@news.t-online.com>

bertgoos at yahoo.com wrote:

> Hey, I have the following code that has to send every command it
> receives to a list of backends. Instead of:
> 
> class MultiBackend(object):
>     """Renders to multiple backends"""
> 
>     def __init__(self, backends):
>         self.backends = backends
> 
>     def flush(self):
>         for b in self.backends:
>             b.flush()
> 
>     def draw(self):
>         for b in self.backends:
>             b.draw()
> 
> 
> I would like to write each method like:
> 
>     flush = multimethod()
> 
> Is that possible using new-style classes?

Not without a custom metaclass or the method name passed explicitly to
multimethod(). Here's a simpler approach that works with both new and
classic classes:

"""
>>> class B(object):
...     def __init__(self, name):
...         self.name = name
...     def draw(self, x, y):
...         print "%s: draw(%s, %s)" % (self.name, x, y)
...     def flush(self):
...         print "%s: flush()" % self.name

>>> m = MultiBackend([B("alpha"), B("beta")])
>>> m.draw(1, 2)
alpha: draw(1, 2)
beta: draw(1, 2)

>>> m.flush()
alpha: flush()
beta: flush()

"""

from operator import attrgetter

class MultiBackend(object):
    def __init__(self, backends):
        self._backends = backends
    def __getattr__(self, name):
        get = attrgetter(name)
        def multi(self, *args, **kw):
            for b in self._backends:
                get(b)(*args, **kw)
        setattr(self.__class__, name, multi)
        return getattr(self, name)

if __name__ == "__main__":
    import doctest
    doctest.testmod()

Peter


From flupke at nonexistingdomain.com  Thu Sep 28 04:26:44 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 28 Sep 2006 08:26:44 GMT
Subject: Difference between two dates in seconds
In-Reply-To: <Xns984C5D603293Eduncanbooth@127.0.0.1>
References: <mailman.861.1159421384.10491.python-list@python.org>
	<wqKSg.100459$qV7.1377329@phobos.telenet-ops.be>
	<Xns984C5D603293Eduncanbooth@127.0.0.1>
Message-ID: <8HLSg.100566$sO2.1205282@phobos.telenet-ops.be>

Duncan Booth schreef:
> flupke <flupke at nonexistingdomain.com> wrote:
> 
>> Using 86400 instead of (24*60*60) is faster
> 
> s/is/was/
> 
> upgrade to Python 2.5

Indeed, i'm still on 2.4.
I thought 2.5 might give a different result :)

Thanks for the info
Benedict


From garys at ihug.com.au  Thu Sep 14 19:29:04 2006
From: garys at ihug.com.au (Gary Stephenson)
Date: Fri, 15 Sep 2006 09:29:04 +1000
Subject: descriptor problems
References: <45091f01$0$7317$5a62ac22@per-qv1-newsreader-01.iinet.net.au>
	<eeb8oq$79d$01$1@news.t-online.com>
Message-ID: <4509e592$0$7335$5a62ac22@per-qv1-newsreader-01.iinet.net.au>


"Peter Otten" <__peter__ at web.de> wrote in message 
news:eeb8oq$79d$01$1 at news.t-online.com...
> Gary Stephenson wrote:
>
>> I want to define a class-level attribute that will be shared by all
>> subclasses.  That is, I want this class, every subclass of this class,
>> every instance of this class and every instance of every subclass to be
>> able to
>> read and write to the _same_ slot/variable.  But I can't figure out how 
>> to
>> do it.
>
> class A:
>    class __metaclass__(type):
>        _shared = 42
>        def get_shared(self):
>            return self.__class__._shared
>        def set_shared(self, value):
>            print "%r --> %r" % (self._shared, value)
>            self.__class__._shared = value
>        shared = property(get_shared, set_shared)
>
>    def get_shared(self):
>        return self.__class__.shared
>    def set_shared(self, value):
>        self.__class__.shared = value
>    shared = property(get_shared, set_shared)
>
> Does that what you want?

It certainly does!  But I need to figure out how to package it up a bit more 
elegantly.  I'd prefer not to have to define a separate metaclass for each 
class if I could avoid it.  hmmm   ..... The following is what I eventually 
came up with, which is exactly what I was after:

class valueDescriptor(object):
    def __init__(self,x=None):
        self.value = x
    def __get__(self,ob,cls=None):
        return self.value
    def __set__(self,ob,x):
        self.value = x

class Ameta(type):
    def createShared( cls, nm, initValue=None ):
        o = valueDescriptor(initValue)
        setattr( cls,nm, o )
        setattr( cls.__class__,nm, o )

class A:
    __metaclass__ = Ameta

class B( A ):
    A.createShared("cls2",1)


Many thanks,

gary





From sanxiyn at gmail.com  Tue Sep 19 00:00:16 2006
From: sanxiyn at gmail.com (Sanghyeon Seo)
Date: Tue, 19 Sep 2006 13:00:16 +0900
Subject: Using sys.executable
In-Reply-To: <5b0248170609182059x12f92d23l98d62bf71eb979a3@mail.gmail.com>
References: <5b0248170609182059x12f92d23l98d62bf71eb979a3@mail.gmail.com>
Message-ID: <5b0248170609182100h51023e8bg807a62ff8edb133@mail.gmail.com>

Oops, sent to the wrong address!

2006/9/19, Sanghyeon Seo <sanxiyn at gmail.com>:
> Following Elliot's advice, I changed my scripts to use sys.executable
> instead of hardcoding the path. Also in SVN.
>
> # in run_tests.py
> import os, sys
> os.putenv('PYTHON', sys.executable)
>
> # in shell scripts
> $PYTHON alltests.py


From python.list at tim.thechases.com  Tue Sep 26 10:46:13 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 26 Sep 2006 09:46:13 -0500
Subject: Remap Mysql tuple to dictionary
In-Reply-To: <efbda2$qvb$1@sea.gmane.org>
References: <2rTRg.95640$AD5.1277027@phobos.telenet-ops.be><efaeg4$5oj$2@lust.ihug.co.nz><mailman.629.1159250957.10491.python-list@python.org><efaj9p$fqq$2@lust.ihug.co.nz>	<efakif$idf$1@lust.ihug.co.nz><mailman.644.1159256238.10491.python-list@python.org><efapp8$rfd$3@lust.ihug.co.nz><mailman.652.1159263385.10491.python-list@python.org><efase7$16m$1@lust.ihug.co.nz><mailman.683.1159279075.10491.python-list@python.org>	<1159279813.569837.206530@e3g2000cwe.googlegroups.com>
	<efbda2$qvb$1@sea.gmane.org>
Message-ID: <45193D35.6070702@tim.thechases.com>

>>    NIL ILLEGITIMO CARBORUNDUM
> 
> isn't that usually written
> 
>     Illegitimi non carborundum
> 
> or is that just due to differences between british latin and
> american latin ?

Wouldn't those differences make it
"carbourundum" vs.
"carborundum" respectively?

:*)

(however, yes, dredging my grade-school Latin, I believe Fredrik 
is correct in the common ordering of the phrase, though I can't 
vouch for the declension of "illegitimi" vs. "illegitimo")

-tkc





From bj_666 at gmx.net  Sat Sep 30 16:56:41 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sat, 30 Sep 2006 22:56:41 +0200
Subject: builtin regular expressions?
References: <451e37a5$1@news.vo.lu> <87k63ly1gi.fsf@gmail.com>
	<efm0k6$lgg$1@mlucom4.urz.uni-halle.de> <877izlxsiy.fsf@gmail.com>
	<efm4se$mm2$1@mlucom4.urz.uni-halle.de> <451ea5cc$1@news.vo.lu>
	<1159642479.968928.34760@k70g2000cwa.googlegroups.com>
	<efmgtt$q1m$1@mlucom4.urz.uni-halle.de>
Message-ID: <pan.2006.09.30.20.56.40.77304@gmx.net>

In <efmgtt$q1m$1 at mlucom4.urz.uni-halle.de>, Mirco Wahab wrote:

> I fail to see the benefit of a re-object, I consider these to
> be just there because regexes aren't in the core language.

One benefit is that it's an object.  You can stuff it into a dictionary or
give it as argument to a function.

Ciao,
	Marc 'BlackJack' Rintsch




From guotie.9 at gmail.com  Wed Sep  6 22:37:35 2006
From: guotie.9 at gmail.com (=?utf-8?B?5Y+u5Y+u5b2T5b2T?=)
Date: 6 Sep 2006 19:37:35 -0700
Subject: are there any lib for receive hotmail ?
In-Reply-To: <mailman.22.1157472053.5279.python-list@python.org>
References: <1157374039.234282.238570@m79g2000cwm.googlegroups.com>
	<ONXKg.8550$o42.6314@tornado.texas.rr.com>
	<1157467698.407373.273750@d34g2000cwd.googlegroups.com>
	<4m5kf4F4hppiU1@uni-berlin.de>
	<mailman.22.1157472053.5279.python-list@python.org>
Message-ID: <1157596655.097413.104820@m73g2000cwd.googlegroups.com>

thanks.



Tim Chase ???

> > And receiving hotmail (or any outher webmail) using scraping
> > techniques is a daunting task, to say the least - you should
> > forget about that IMHO.
>
> There's a perl project called "gotmail" that will do the scraping
> to dump in a local mailbox file (I don't remember whether it's MH
> or mbox format).  You can snag it at
>
> http://gotmail.sf.net
>
> Thus, there's evidence that Hotmail can be scraped, but it seems
> they have a never-ending battle against Hotmail, trying to keep
> up with changes.
>
> I don't know of any Python projects doing the same sort of thing.
>   It might not be too hard to port the Perl project over to
> Python, but one would be an extra level removed from scraping
> Hotmail, playing catchup not only with Hotmail, but then porting
> the latest fixes from Gotmail.
>
> There are a couple other Hotmail-to-mbox scrapers I've heard of,
> but haven't tried.
> 
> -tkc



From sturlamolden at yahoo.no  Thu Sep 28 13:04:37 2006
From: sturlamolden at yahoo.no (sturlamolden)
Date: 28 Sep 2006 10:04:37 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.873.1159439669.10491.python-list@python.org>
References: <mailman.1980.1159437004.10490.python-list@python.org>
	<mailman.873.1159439669.10491.python-list@python.org>
Message-ID: <1159463077.471436.140740@i42g2000cwa.googlegroups.com>


Brendon Towle wrote:

> > def cons(a,b)
> >    return [a,b]
>
> should be:
>      return [a].extend(b)

I seem to remember that a cons joins two items, it doesn't grow a
strait list. A lisp list is a special case of a binary tree. How would
you build a tree structure with your cons? I think you are wrong here.

> > def car(structure)
> >    return structure[0]
> >
> > def cdr(structure)
> >    return structure[1]
>
> should be:
>      return structure[1:]

With your cons yes. With mine no, as there is only two elements in each
array aka "cons cell".



From danielmarkhot at gmail.com  Wed Sep 20 14:54:32 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 20 Sep 2006 11:54:32 -0700
Subject: How to evaluate the memory usage of a python program?
Message-ID: <1158778472.603820.61450@b28g2000cwb.googlegroups.com>

Hello all:

I have a python program and would like to find out the maximum memory
used
by this program.

Does Python provide such module so I could check it easily?




Thank you
-Daniel



From gagsl-py at yahoo.com.ar  Tue Sep 26 21:08:25 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 26 Sep 2006 22:08:25 -0300
Subject: releasing memory to malloc
In-Reply-To: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
References: <1159317243.803849.161000@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060926220303.04abbb00@yahoo.com.ar>

At Tuesday 26/9/2006 21:34, iker.arizmendi at gmail.com wrote:

>Is there any way to get Python to release memory back to the
>C allocator? I'm currently running a script that goes through
>the following steps:
>
>1) Creates a very large number of Python objects to produce
>a relatively small data structure that sits in a C extension.
>The Python objects consume quite a bit of memory.
>
>2) Releases all the Python objects.
>
>3) Invokes a function of said C extension for further
>processing. This step needs as much memory as possible.
>
>I'd like step 2 to return memory to the C allocator so that it
>is available to the extension in step 3 (which uses malloc).

Can you modify the C source? If you can, use the Python memory 
allocation functions PyMem_Malloc/PyMem_Realloc/PyMem_Free.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From sjmachin at lexicon.net  Fri Sep 29 02:30:52 2006
From: sjmachin at lexicon.net (John Machin)
Date: 28 Sep 2006 23:30:52 -0700
Subject: analyzing removable media
In-Reply-To: <1159511003.768019.145680@e3g2000cwe.googlegroups.com>
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
	<1159510609.968438.111540@e3g2000cwe.googlegroups.com>
	<1159511003.768019.145680@e3g2000cwe.googlegroups.com>
Message-ID: <1159511451.988140.46280@m7g2000cwm.googlegroups.com>


glenn wrote:
> Hi  Jay
> pls excuse top post - Im actually doing this project in linux, but am
> wanting it to be cross platform. I definitley have to cater for win32
> also.  I was hoping that burried in sys or os or that there'd be some x
> platform  module that did all that stuff for me
>

Things don't get buried. If it's not in the documentation, it's not
there.



From cappy2112 at gmail.com  Fri Sep 22 22:05:24 2006
From: cappy2112 at gmail.com (Cappy2112)
Date: 22 Sep 2006 19:05:24 -0700
Subject: Fatal error after RE-installing Python 2.3.4
Message-ID: <1158977123.908194.304080@i3g2000cwc.googlegroups.com>

I've just started a job which has a massive python2.3.4-centric tools
installation and configuration.

I know what you're going to say, but I can't upgrade and be the only
one with a newer version. There are close to 30 engineers using this
same tools configuration, and it has been working fine for a long time.
For now, we all have to live with the limitations and or bugs in 2.3.4.

I'm running Windows XP, SP2, on a AMD 1.79Ghz MP 2200+.

After editing/testing one of the python test scripts, I was about to
check a small script change into cvs, when my mentor suggested running
pychecker. When I did this, I saw a several pages full of warnings.

For me not knowing the code base well enough to know what to expect, He
thought this was odd, took the file, ran pychecker on his system, with
the file I've edited, and only sees 4-5 warnings.

We have the same version of Python, that being 2.3.4, the same version
of pychecker which is 0.8.14.

I had deleted and re-installed pychecker, and still saw the same
warnings.
I have compared this to another machine, and again, I am the odd man
out.

I've deleted all the Python packages, pythonwin, and The core 2.3.4
distribution, and re-installed everything from scratch.

Now, When I launch Python from a cmd console, the following is reported

C:\Windows\system32\cmd.exe- python
The NTVDM CPU has encountered an illegal instruction.
Chose close to terminate the application.


Oddly enough, when I run Python.exe from the Program Files menu, it
launches just fine.


The virus scanner doesn't find any known viruses, and I've also
disabled the virus checker after un-installing-reinstalling Python the
last time.
I've also tried downloading another copy of the installer.

Does anyone have any ideas what is causing this and how to fix it? My
job depends on me getting Python2.3.4 back to working order.



thanks



From MonkeeSage at gmail.com  Fri Sep 29 01:08:15 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 28 Sep 2006 22:08:15 -0700
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
Message-ID: <1159506495.429866.303030@c28g2000cwb.googlegroups.com>

So far as unobfuscated versions go, how about the simple:

def to_bin(x):
  out = []
  while x > 0:
    out.insert(0, str(x % 2))
    x = x / 2
  return ''.join(out)

Regards,
Jordan



From iambus at gmail.com  Sun Sep 10 05:17:32 2006
From: iambus at gmail.com (iambus at gmail.com)
Date: 10 Sep 2006 02:17:32 -0700
Subject: How to insert an email-link into wxPython's HtmlWindow
In-Reply-To: <1157539420.812552.60770@m79g2000cwm.googlegroups.com>
References: <1157539420.812552.60770@m79g2000cwm.googlegroups.com>
Message-ID: <1157879852.085373.70520@i42g2000cwa.googlegroups.com>


Thanks. It works now.

--Kneo

iambus at gmail.com wrote:
> Hello. I don't know if this topic is appropriate in this group (and my
> English is not good).
>
> My problem is here:
>
> I created a HtmlWindow in wxPython, then I wrote some code and set it
> to the page-text. In these code there was a line "<a
> href="mailto:name at gmail.com">name at gmail.com</a>" (where "name" was my
> real username). Then I showed this HtmlWindow and I thought there would
> be a mail-sending box when I clicked on the "name at gmail.com" link (like
> when I clicked it in a web browser). But there just came a "Python
> Error"-titled dialog: Unable to open requested HTML document
> mailto:name at gmail.com. What should I do to solve this problem?
> 
> (My OS is WinXP.)
> 
> Thanks.



From claesatwork at gmail.com  Wed Sep 27 14:12:23 2006
From: claesatwork at gmail.com (Claes at work)
Date: Wed, 27 Sep 2006 20:12:23 +0200
Subject: Difference between two dates in seconds
Message-ID: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>

Hi,

I am learning Python and want to perform what I think is a very simple
task: calculating the difference between two dates in seconds. Reading
through the documentation I am puzzled: I can't find a way to do this
without doing manually what I think  belongs to a standard library
method.

Please tell me there is a simpler way than subtracting two datetimes
to get a timedelta and then compute

days * number of seconds per day + seconds

from it myself??

Put in other words - I find it puzzling that timedelta exposes its
internal representation (the instance attributes days and seconds) but
not ways to get the difference in arbitrary units. What am I missing?

Thanks, Claes


From breakfastea at gmail.com  Thu Sep 21 10:29:28 2006
From: breakfastea at gmail.com (breakfastea at gmail.com)
Date: 21 Sep 2006 07:29:28 -0700
Subject: How to return an "not string' error in function?
In-Reply-To: <mailman.416.1158848492.10491.python-list@python.org>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
Message-ID: <1158848968.493858.96600@k70g2000cwa.googlegroups.com>

Thank you so much it answers my humble question perfectly:)



From kw at kevin-walzer.com  Tue Sep  5 10:43:35 2006
From: kw at kevin-walzer.com (Kevin Walzer)
Date: Tue, 05 Sep 2006 10:43:35 -0400
Subject: OS X and Python - wxPython has forced a rehash of my approach
In-Reply-To: <1157428874.399869.10560@m79g2000cwm.googlegroups.com>
References: <1157408311.597682.264100@i3g2000cwc.googlegroups.com>
	<1157413341.812545.51970@m73g2000cwd.googlegroups.com>
	<44FCF02F.90900@kevin-walzer.com>
	<1157428874.399869.10560@m79g2000cwm.googlegroups.com>
Message-ID: <44FD8D17.7040400@kevin-walzer.com>

hiaips wrote:

> 
> Outdated??? It's Python 2.4.3 (and they already have a build for
> 2.5rc1), so I'm not sure what you mean.
> 

Also, for what it's worth, I strongly recommend the packages hosted at
pythonmac.org; these are built and tested by the core MacPython developers.

-- 
Kevin Walzer
Poetic Code
http://www.kevin-walzer.com


From larry.bates at websafe.com  Mon Sep 25 10:20:08 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Mon, 25 Sep 2006 09:20:08 -0500
Subject: Replacing line  in a text  file
In-Reply-To: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
References: <1158945935.656704.21210@b28g2000cwb.googlegroups.com>
Message-ID: <dJudnXvKIY4OeIrYnZ2dnUVZ_tidnZ2d@comcast.com>

CSUIDL PROGRAMMEr wrote:
> Folks
> I am trying to read a file
> This file has a line containing string  'disable = yes'
> 
> I want to change this line to 'disable = no'
> 
> The concern here is that , i plan to take into account the white spaces
> also.
> 
> I tried copying all file int list and then tried to manipulate that
> list
> 
> But the search is not working
> 
> Any answer
> 
> thanks
> 
Something simple like (not tested):

fp=open(filename, 'r')
data=fp.read()
fp.close()
data='disable = yes'.join(data.split('disable = no',1))
fp=open(filename, 'w')
fp.write(data)
fp.close()

-Larry Bates


From jaysherby at gmail.com  Fri Sep 29 02:16:50 2006
From: jaysherby at gmail.com (Jay)
Date: 28 Sep 2006 23:16:50 -0700
Subject: analyzing removable media
In-Reply-To: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
References: <1159506620.982412.264010@k70g2000cwa.googlegroups.com>
Message-ID: <1159510609.968438.111540@e3g2000cwe.googlegroups.com>

Well, in linux you can get a lot of info about where a file is based
upon where it lies in the file system.  For example, if the folder the
file is located in resides in the /media or /mnt directories, then the
file is, barring a few rare circumstances, located upon a removable
medium of some sort.  Once you get the name of that directory that is
right below /media or /mnt, then you can cross check the name in
/etc/fstab file.

However, the contents of your post lead me to believe that you're
working in a win32 environment.  That's a bit trickier.  Things aren't
so simple.  You could probably grab similar information from the full
path itself.  For example, just getting the drive letter that the file
resides on could tell you a lot.  Now, where you'd cross check that is
more of a mystery to me.  I'd guess the registry?  For an easier way of
accessing the registry, I believe that the wrapper pywin32 may be of
interest to you.  It shouldn't be that hard considering that you'd only
be getting some information, not setting anything.

If by chance we're talking about MacOS, I'm of almost no help.  In the
case of MacOS X, it has a unix core, so I'd imagine that the method I
described for linux could probably be adapted.

Jay

glenn wrote:
> Hi
> can anyone tell me how given a directory or file path, I can
> pythonically  tell if that item is on 'removable media', or sometype of
> vfs, the label of the media (or volume) and perhaps any other details
> about the media itself?
> thanks
> Glenn



From rganesan at myrealbox.com  Thu Sep 21 06:59:31 2006
From: rganesan at myrealbox.com (Ganesan Rajagopal)
Date: Thu, 21 Sep 2006 16:29:31 +0530
Subject: pexpect baudrate and mode settings
References: <e23133680609202308v7f8d2e7eo7ca41c6df2935f91@mail.gmail.com>
Message-ID: <xkvhvenh5vu4.fsf@grajagop-lnx.cisco.com>

>>>>> Bryce Bolton <bryce.bolton at gmail.com> writes:

> In short, setting of critical parameters is unclear under pexpect's
> documentation, but may be obvious to those more familiar with os.open or
> other filesystem internals.

Try using "stty" program on Linux to set these parameters before you use
pexpect. 

Ganesan

-- 
Ganesan Rajagopal



From gdamjan at gmail.com  Mon Sep 11 10:17:51 2006
From: gdamjan at gmail.com (Damjan)
Date: Mon, 11 Sep 2006 16:17:51 +0200
Subject: egg and modpython
References: <1157750688.025673.5980@p79g2000cwp.googlegroups.com>
	<4504371a$0$628$636a55ce@news.free.fr>
	<1157969582.029638.136340@i42g2000cwa.googlegroups.com>
Message-ID: <45056f88$0$75029$14726298@news.sunsite.dk>

> I applaud you for studying the traceback in more depth than I can find
> the motivation for, Bruno. ;-) However, this looks like a program using
> some package installed by setuptools/easy_install needs to unpack that
> package when running.

See news:1156983715.531892.298870 at i42g2000cwa.googlegroups.com

-- 
damjan


From mike.klaas at gmail.com  Fri Sep 29 17:22:54 2006
From: mike.klaas at gmail.com (Mike Klaas)
Date: Fri, 29 Sep 2006 14:22:54 -0700
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
	<1159515955.553244.74480@i3g2000cwc.googlegroups.com>
	<1159554370.109208.301430@m7g2000cwm.googlegroups.com>
	<667902c0609291417i3e7e573au9177917259abc623@mail.gmail.com>
Message-ID: <3d2ce8cb0609291422j128ca3fagd6738e3036b050f6@mail.gmail.com>

On 9/29/06, Johan Steyn <johan.steyn at gmail.com> wrote:
> On 29 Sep 2006 11:26:10 -0700, Klaas <mike.klaas at gmail.com> wrote:
>
> > else: does not trigger when there is no data on which to iterate, but
> > when the loop terminated normally (ie., wasn't break-ed out).  It is
> > meaningless without break.
>
> The else clause *is* executed when there is no data on which to iterate.
>  Your example even demonstrates that clearly:

Yes--there is a missing "just" in that sentence.

-Mike


From nyamatongwe+thunder at gmail.com  Wed Sep  6 10:14:09 2006
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Wed, 06 Sep 2006 14:14:09 GMT
Subject: [ANN] IronPython 1.0 released today!
In-Reply-To: <ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
References: <mailman.38.1157488049.5279.python-list@python.org>
	<ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
Message-ID: <RIALg.24359$rP1.20368@news-server.bigpond.net.au>

Chris:

> I'm no code guru but it sounds interesting. So can I import numpy, 
> scipy, matplotlib, wxpython etc like I do now with CPython and expect, 
> short of a few tweaks, that my code will work? 

    No, IronPython is currently unable to load CPython DLLs.

    Neil


From connellybarnes at yahoo.com  Fri Sep 22 23:09:15 2006
From: connellybarnes at yahoo.com (Connelly Barnes)
Date: Fri, 22 Sep 2006 20:09:15 -0700 (PDT)
Subject: Automatic import PEP
Message-ID: <20060923030915.18076.qmail@web54303.mail.yahoo.com>


Hi,

I wrote the 'autoimp' module [1], which allows you to import lazy modules:

from autoimp import *     (Import lazy wrapper objects around all modules; "lazy
                           modules" will turn into normal modules when an attribute
                           is first accessed with getattr()).
from autoimp import A, B  (Import specific lazy module wrapper objects).

The main point of autoimp is to make usage of the interactive Python prompt
more productive by including "from autoimp import *" in the PYTHONSTARTUP file.
Thus one can use:

 >>> urllib2.urlopen('http://www.google.com').read()
 >>> Image.open('test.bmp')
 >>> pylab.plot([1,2],[3,4])
 >>> scipy.linalg.eig([[1,2],[3,4]])
 >>> ...

One can thenceforward use the interactive prompt without using the "import"
statement at all.  In practice, I have found that there is little overhead in time
and memory for the initial import of all lazy modules (assuming all of the Python
module paths are on the local disk, and not on a network).

I have also found "autoimp" useful in writing normal Python applications; one can
use "from autoimp import *" at the top of a Python source file and thus have all
Python modules available to that source file, which results in increased
efficiency of writing the program with the downside that one has to think more
carefully about global variables to avoid name conflict bugs.

Now because this feature is useful, I thought of writing a PEP to add the
"lazy import" functionality to the Python interpreter.

Specifically:

  lazily import *
  lazily import A, B, C

This would involve the introduction of a new keyword, such as "lazily".

The PEP should include extensions to the builtin Python __import__ (__lazilyimport__ ?)
and the imp and zipimport modules so that the new "lazy import" feature can be
fully utilized by "dynamic" Python code.

Closely related to the "autoimp" module is Philip Eby's Importing module [2].  The Importing
module has the ability to lazily import a single module as well as a number of other features,
so Philip may wish to be involved, and features from Importing may be used in the PEP if
desired.

Opinions?

[1]. http://cheeseshop.python.org/pypi/autoimp/1.0.2
[2]. http://peak.telecommunity.com/DevCenter/Importing


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


From brenNOSPAMbarn at NObrenSPAMbarn.net  Wed Sep 27 14:26:37 2006
From: brenNOSPAMbarn at NObrenSPAMbarn.net (OKB (not okblacke))
Date: Wed, 27 Sep 2006 18:26:37 GMT
Subject: Top and Bottom Values [PEP: 326]
References: <slrnehk7ju.rcu.apardon@rcpc42.vub.ac.be>
	<efdjr1$3c2$00$1@news.t-online.com>
	<slrnehkqqc.rcu.apardon@rcpc42.vub.ac.be>
Message-ID: <Xns984B746409A6BOKB@199.45.49.11>

Antoon Pardon wrote:

> To begin with this already fails:
> 
>>>> for i in xrange(Top):
> ...   print i

    	What do you expect this to do?  Loop forever?

-- 
--OKB (not okblacke)
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is
no path, and leave a trail."
	--author unknown


From casevh at comcast.net  Mon Sep 18 15:34:50 2006
From: casevh at comcast.net (casevh at comcast.net)
Date: 18 Sep 2006 12:34:50 -0700
Subject: newbie division question
In-Reply-To: <YMBPg.3328$uj3.1736@trnddc08>
References: <YMBPg.3328$uj3.1736@trnddc08>
Message-ID: <1158608090.645965.49970@m7g2000cwm.googlegroups.com>

David Isaac wrote:
> Suppose x and y are ints in moduleA.
>
> If I put
> from __future__ import division
> in moduleA then x/y will produce the truediv result.
>
> If I put
> from __future__ import division
> in moduleB
> and
> from moduleB import *
> in module A
> then x/y will NOT produce the truediv result
> (in moduleA).
>
> Why?
The statement "from __future__ import division" in ModuleB influences
the byte codes generated when ModuleB is compiled. It doesn't influence
the byte code generated in ModuleA.
> And is there some way to avoid importing
> from __future__ in module after module?
Start python with the "-Qnew" option.
> 
> Thanks,
> Alan Isaac

casevh



From francois.schnell at gmail.com  Sat Sep  2 18:50:44 2006
From: francois.schnell at gmail.com (francois.schnell at gmail.com)
Date: 2 Sep 2006 15:50:44 -0700
Subject: XBox 360 free SDK (XNA)  and IronPython
Message-ID: <1157237444.130785.194100@p79g2000cwp.googlegroups.com>

Just for information I just read this BBC article about the free (as in
beer) SDK for XBOX 360 called XNA :

http://news.bbc.co.uk/2/hi/technology/5306276.stm

and saw here an example of someone using IronPython:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=682689&SiteID=1

I hope Nintendo / Sony will follow (free SDK, with the possibility to
program in Python also) .



From bdesth.quelquechose at free.quelquepart.fr  Thu Sep 14 20:47:31 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 15 Sep 2006 02:47:31 +0200
Subject: page contents are not refreshed
In-Reply-To: <1158176838.477806.212030@m73g2000cwd.googlegroups.com>
References: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>
	<1158174404.950910.260050@b28g2000cwb.googlegroups.com>
	<mailman.49.1158174948.10491.python-list@python.org>
	<1158176838.477806.212030@m73g2000cwd.googlegroups.com>
Message-ID: <4509f4e1$0$31336$626a54ce@news.free.fr>

waylan a ?crit :
(snip)
> 
> While Steve's examples certainly do the trick in this limited case, I
> assumed that the original poster was just starting with mod_python and
> I was simply trying to explain the bigger picture for future reference.
> As one develops more sophisticated code, simply adding it to the
> `handler` function becomes less desirable.

Indeed, but...

> Reacognizing that anything
> that must be reevaluated on each request must be callable 

There it gets plain wrong.

(snip)

> Steve's examples work because the current time is evaluated within
> `handler` and :
> 
> 
>>>>callable(handler)
> 
> True
> 
> While in the the original example:
> 
> 
>>>>callable(curtime)
> 
> False

The fact that the object bound to curtime being callable or not doesn't 
change anything to the problem. You can write as many functions as you 
want outside the handler, if they don't get called by the handler, this 
won't be of no use.


From ilias at lazaridis.com  Sat Sep 30 17:20:27 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 30 Sep 2006 14:20:27 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
In-Reply-To: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
Message-ID: <1159651227.259900.204240@i42g2000cwa.googlegroups.com>

metaperl wrote:
> I was shocked to see the personal insults hurled in this thread:
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b
>
> I have been very pleased with Python developers regardless of skill
> levels in both the IRC channel as well as here - no hot attitudes. No
> holier than thou put ons. I was just sinking into the comradery and
> cooperative nature of this new powerful community when I saw that
> thread.
>
> Well, I hope that the fact that 99% of the Python community, from Guido
> von Rossum on down continues to exemplify how a language can be good
> and the people can be friendly and that the other 1% get inspired by
> their positivity and switch as well...

I've reviewed a little the thread.

I've not evaluated the possible use-cases of "cgi.escape".

The question is always: who start's the use of insults?

I just noticed one thing:

The OP wrote (refering to an implementationd detail, which btw. has
possible resulted after many days of thought/trials in context of
several use-cases):

"This seems to me to be dumb"
http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b

which could be interpreted as: "the implementor seems to be dumb"

So, personally I think the implementor was free to reply "bla bla bla,
you idiot".

This was not an insult.

Just a gentle gesture (using similar wording as the OP).

.

--
http://lazaridis.com



From ironfroggy at gmail.com  Mon Sep 18 20:25:34 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 20:25:34 -0400
Subject: Read a group of files as a list
In-Reply-To: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
References: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
Message-ID: <76fd5acf0609181725j54d53adcm9ff27154b0d1cfd3@mail.gmail.com>

On 18 Sep 2006 17:09:22 -0700, citlaly <isalazar80 at yahoo.com.mx> wrote:
> Hi!!
> I'm a beginner in python and I'm trying to use the files from a
> "folder" as a list. What I want to do is  read each one as a list, but
> just the name of the file, the data inside doesn't matter. How can I do
> it?  I was trying using a list, but I don't know how "convert" the
> elements (files) to a list that I can read and manipulate...
>
> Thanks in advance for your help!!
>
> Citlaly....
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

Look at the docs for os.path.walk, os.walk, and os.listdir, and pick
the ones that fits your usecase best.


From deets at nospam.web.de  Fri Sep 29 20:03:11 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Sat, 30 Sep 2006 02:03:11 +0200
Subject: DAT file compilation
In-Reply-To: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
References: <1159571664.963362.193360@c28g2000cwb.googlegroups.com>
Message-ID: <4o5qhvFd1bddU1@uni-berlin.de>

Jay schrieb:
> Is there a way through python that I can take a few graphics and/or
> sounds and combine them into a single .dat file?  If so, how?  And how
> can I access the data in the .dat file from inside the python script?

Use a zip-file. See the zipfile-module.

Diez


From DustanGroups at gmail.com  Sat Sep 16 08:36:27 2006
From: DustanGroups at gmail.com (Dustan)
Date: 16 Sep 2006 05:36:27 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
In-Reply-To: <8TLOg.2260$IA.864@newssvr11.news.prodigy.com>
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
	<1158366884.271106.233500@i3g2000cwc.googlegroups.com>
	<1158368557.990103.222800@k70g2000cwa.googlegroups.com>
	<1158375749.810421.144120@k70g2000cwa.googlegroups.com>
	<8TLOg.2260$IA.864@newssvr11.news.prodigy.com>
Message-ID: <1158410187.874440.242020@m7g2000cwm.googlegroups.com>


James Stroud wrote:
> Dustan wrote:
> > Jay wrote:
> >
> >>Thanks for the tip, but that breaks things later for what I'm doing.
> >>
> >>bearophileHUGS at lycos.com wrote:
> >>
> >>>In that case you don't need a lambda:
> >>>
> >>>import Tkinter as tk
> >>>
> >>>class Test:
> >>>    def __init__(self, parent):
> >>>        buttons = [tk.Button(parent, text=str(x+1),
> >>>command=self.highlight(x)) for x in range(5)]
> >>>        for button in buttons:
> >>>            button.pack(side=tk.LEFT)
> >
> >
> > Well, actually, that's wrong. You obviously don't understand why lambda
> > is necessary for event binding; in this case (and many others, for that
> > matter), the button gets bound to the event *returned* by
> > self.highlight(x), which, since nothing gets returned, would be None.
> > Then when you click the button, Tkinter calls None(), and out of the
> > blue, an error is raised.
> >
> > Lambda is the safe way around that error.
> >
> >
> >>>    def highlight(self, x):
> >>>        print "highlight", x
> >>>
> >>>root = tk.Tk()
> >>>d = Test(root)
> >>>root.mainloop()
> >>>
> >>>Bye,
> >>>bearophile
> >
> >
>
> Actually, lambda is not necessary for event binding, but a closure (if I
> have the vocab correct), is:

Of course. What I should have said was "lambda is the quickest and
easiest way". However, if you want your intent to be clear, lambda
isn't always the best option, but it is quite often the quickest.

>
> import Tkinter as tk
>
> def make_it(x):
>    def highliter(x=x):
>      print "highlight", x
>    return highliter
>
> class Test:
>      def __init__(self, parent):
>          buttons = [tk.Button(parent, text=str(x+1),
>                     command=make_it(x)) for x in range(5)]
>          for button in buttons:
>              button.pack(side=tk.LEFT)
>
> root = tk.Tk()
> d = Test(root)
> root.mainloop()
>
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/



From tuomas.vesterinen at pp.inet.fi  Mon Sep 25 02:35:53 2006
From: tuomas.vesterinen at pp.inet.fi (Tuomas)
Date: Mon, 25 Sep 2006 06:35:53 GMT
Subject: gtk.Entry Colors
In-Reply-To: <1159121638.446784.137070@b28g2000cwb.googlegroups.com>
References: <L8wRg.16872$mj5.1449@read3.inet.fi>
	<1159121638.446784.137070@b28g2000cwb.googlegroups.com>
Message-ID: <dNKRg.27$S_5.15@read3.inet.fi>

MonkeeSage wrote:
> Tuomas wrote:
> 
>>I would like to manipulate PyGTK Entry widget's background and
>>foreground colors. Is it possible? How?
> 
> 
> Yes, it is possible:
> 
> # widget color
> entry.modify_base(gtk.STATE_NORMAL, gtk.gdk.color_parse("#FF0000"))
> # frame color
> entry.modify_bg(gtk.STATE_NORMAL, gtk.gdk.color_parse("#0000FF"))
> # text color
> entry.modify_text(gtk.STATE_NORMAL, gtk.gdk.color_parse("#00FF00"))


Thanks a lot.

> See:
> http://www.pygtk.org/pygtk2reference/class-gtkwidget.html
> http://www.pygtk.org/pygtk2reference/class-gdkcolor.html

Yes, I read the reference before posting here. I tried something like:

attr_list=pango.AttrList()
attr=pango.AttrForeground(0, 0, 65000, start_index=0, end_index=-1)
attr_list.insert(attr)
entry.get_layout().set_attributes(attr_list)

or

entry.window.set_background(gtk.gdk.color_parse("#0000FF"))

but they did not work for this purpose.

Tuomas

> Regards,
> Jordan
> 


From frank at chagford.com  Wed Sep 27 04:43:44 2006
From: frank at chagford.com (Frank Millman)
Date: 27 Sep 2006 01:43:44 -0700
Subject: odbc DbiDate date conversion
In-Reply-To: <ChbSg.97386$uU7.1346693@phobos.telenet-ops.be>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
	<1159278687.772964.245190@b28g2000cwb.googlegroups.com>
	<z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
	<1159282560.427973.173510@k70g2000cwa.googlegroups.com>
	<ChbSg.97386$uU7.1346693@phobos.telenet-ops.be>
Message-ID: <1159346624.217934.48450@i3g2000cwc.googlegroups.com>


flupke wrote:
> Frank Millman schreef:
> <snip>
>
> > Well waddyaknow - I get exactly the same, for dates earlier than
> > 1970-01-02. Thanks for finding a bug that would have bitten me sooner
> > or later.
> >
> > I will do some investigation. If I find an answer I will post it here,
> > unless some kind soul saves me the trouble and beats me to it.
> >
> > Frank
> >
>
> Thanks for investigating it so far Frank.
>
> Is there a workaround to parse that date and get the date info that i want?
>

Not that I know of. The results of my investigations so far seem to
indicate that we have a problem :-(

Here is a link to an article dated 1998 -
    https://svn.python.org/www/trunk/pydotorg/windows/OdbcHints.html

Among other interesting stuff, it states -

"Notice that result values are converted to Python objects. Dates in
particular are returned as dbiDate objects. This can be a serious
limitation, because dbiDate can not represent dates prior to the UNIX
epoch (1 Jan 1970 00:00:00 GMT). If you try to retrieve earlier dates,
you'll get garbage and may even provoke a crash."

I contacted Mark Hammond, author of the win32 extensions, to ask if
there was a solution and particularly to suggest a modification to
return a datetime.datetime object. This was his reply -

"I'd be happy with an option to use the datetime module - maybe it
could even be on the cursor?  However, I wont have time to do this in
the short term.
You could consider using ADO via win32com too..."

It looks as if we will have to use ADO for now. There is an 'adodbapi'
module available which is DB-API 2.0 compliant -
adodbapi.sourceforge.net. I will give it a try.

Frank



From IronSwallow at gmail.com  Sat Sep  2 19:52:49 2006
From: IronSwallow at gmail.com (Patrick Thomson)
Date: 2 Sep 2006 16:52:49 -0700
Subject: OO on python real life tutorial?
In-Reply-To: <edaf0s$oc3$1@newsreader2.netcologne.de>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
	<edaf0s$oc3$1@newsreader2.netcologne.de>
Message-ID: <1157241169.675904.204630@b28g2000cwb.googlegroups.com>

> I personally don't like wxPython because the way it works is very
> counter intuitive for me and appear to me somehow non-Pythonic

While Claudio has a point (wxPython is a C++ library at heart), I
believe that wxPython is the best solution for Python GUI's out there.
TK may be a lot easier, but with a little practice wxPython becomes
very clear, and the skills you learn therein will be applicable to
almost any other GUI toolkit out there (Swing and SWT were far, far
easier to learn thanks to my wxPython experience.) After all, GvR said
that "wxPython is the best and most mature cross-platform GUI toolkit,
given a number of constraints. The only reason wxPython isn't the
standard Python GUI toolkit is that Tkinter was there first."

The Wax toolkit (http://zephyrfalcon.org/labs/wax.html) attempts to
solve the problems inherent with wxPython and make it more pythonic.
I've never used it, so I don't know if it succeeds.

> wxPython is like programming in Microsoft Visual Basic or Visual C++ :
> some love it, some don't.

Though that is true, I don't think that the analogy holds up at all.
The power of wxPython lies in its attractiveness across all platforms
and the freedom that it gives you; VB and VC++ lock you in what
Microsoft want you to do. (To be fair, that isn't a Bad Thing by
definition.)

> > I want to switch to wxpython because I don't like Tk too much. It is
> > difficult sometimes to have full control of the widgets (i.e. focus
> > sequence). Why do you think wxwidget is not suitable for low-medium
> > size projects? Could you give me some practical examples of this?

I respectfully disagree with Grondi's opinions; a list of notable
wxPython projects (http://wiki.wxpython.org/index.cgi/wxPythonPit_Apps)
showcases projects both small and expansive.

--

Patrick Thomson



From bearophileHUGS at lycos.com  Wed Sep 13 20:13:02 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 13 Sep 2006 17:13:02 -0700
Subject: table (ascii text) lin ayout recognition
In-Reply-To: <1158150812.520471.239910@i3g2000cwc.googlegroups.com>
References: <1158123148.169966.68240@e63g2000cwd.googlegroups.com>
	<8RPNg.748$TV3.408@newssvr21.news.prodigy.com>
	<xZPNg.749$TV3.305@newssvr21.news.prodigy.com>
	<1158150812.520471.239910@i3g2000cwc.googlegroups.com>
Message-ID: <1158192781.775766.73300@b28g2000cwb.googlegroups.com>

Here you can find an improved version:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498093



From duncan.booth at invalid.invalid  Wed Sep 20 09:00:57 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 20 Sep 2006 13:00:57 GMT
Subject: Request for elucidation: enhanced generators
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
	<mailman.323.1158750988.10491.python-list@python.org>
	<1158754746.300782.256090@m73g2000cwd.googlegroups.com>
Message-ID: <Xns98448E976DAD2duncanbooth@127.0.0.1>

"Ben Sizer" <kylotan at gmail.com> wrote:

>> If you have no use case for this you are, as always, perfectly free to
>> ignore it, as the majority of Python users may well choose to do. Your
>> existing generators should continue to work.
> 
> But do you have an example of such a use case? That's what I'm missing
> here. Without ever having used proper coroutines elsewhere, I have no
> real way to appreciate their benefits without a good example.

One example which is commonly given is to implement a web application using 
continuations. So in Python terms a session is handled by a generator which 
yields a form to be sent back to the user and the user's response is sent 
in to the request using the generator's send method. State would be 
maintained in the generator. Whether this actually works well in practice 
(and how you handle things like a back button on the forms) is another 
matter.

So very roughly your web code might look like this:

def checkout(basket):
    orderOk = False

    while not OrderOk:
       order = (yield OrderForm(basket))
       address = (yield AddressForm())
       payment = (yield PaymentForm(order.total))
       confirmation = (yield ConfirmationForm(order, address, payment))
       orderOk = confirmation.confirmed

    placeOrder(order, address, payment)
    yield OrderPlacedPage()



From steve at REMOVE.THIS.cybersource.com.au  Sun Sep 24 01:00:27 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Sun, 24 Sep 2006 15:00:27 +1000
Subject: grabbing random words
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
	<1159008909.126087.214890@m7g2000cwm.googlegroups.com>
	<1159011451.721431.197210@d34g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.24.05.00.26.342325@REMOVE.THIS.cybersource.com.au>

On Sat, 23 Sep 2006 04:37:31 -0700, MonkeeSage wrote:

> Another approach would be to just scrape a CS's random (5.75 x 10^30)
> word haiku generator. ;)

That isn't 5.75e30 words, it is the number of possible haikus. There
aren't that many words in all human languages combined.

Standard English working vocabulary is about 800 words in typical daily
use, and 5000 words that most people can understand. Particularly
well-read people might understand a dozen times that, about 60,000 words.
The total number of words in English is hard to count, but the Oxford
English Dictionary estimates about three quarters of a million words.

http://www.askoxford.com/asktheexperts/faq/aboutenglish/numberwords


Call it a million; and lets say that there are, or have every been, a
million distinct human languages (which is surely a large overestimate,
even including dialects and pigeons). That gives only a "mere" 10**12
words, about a million million million times smaller than the number of
haikus.

(Note however that there are languages like Finnish which allow you to
stick together words into a single "word" of indefinite length, sort of as
if we could say in English "therearelanguageswhichallowyou" to
"sticktogetherwordsintoasinglewordofindefinitelength". Such languages
might be said to have an infinite number of words, in some sense.)



-- 
Steven.



From deets at nospam.web.de  Tue Sep 26 05:37:23 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 26 Sep 2006 11:37:23 +0200
Subject: Surprise using the 'is' operator
References: <1159263278.329661.316530@d34g2000cwd.googlegroups.com>
Message-ID: <4nsamjFbvnabU2@uni-berlin.de>

codefire wrote:

> I thought the 'is' operator was used to identify identical objects,
> whereas the '==' operator checked equality. Well, I got a surprise
> here:
> 
> IDLE 1.1.3
>>>> a = 10
>>>> b = a
>>>> a is b
> True
>>>> a == b
> True
>>>> c = 10
>>>> a == c
> True
>>>> a is c
> True
>>>>
> 
> I was NOT expecting the last statement to return True!
> 
> What am I missing?

One of the most severely beaten dead horses of python - small integers are
cached by the interpreter. Maybe. Thus the above results.

Google for a bazillion discussions on this.

Diez


From johnjsal at NOSPAMgmail.com  Fri Sep 29 09:44:14 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Fri, 29 Sep 2006 13:44:14 GMT
Subject: preemptive OOP?
In-Reply-To: <mailman.905.1159476256.10491.python-list@python.org>
References: <e9USg.47$1n3.432@news.tufts.edu>	<451c1a6d$1@nntp.zianet.com>	<xkVSg.49$1n3.537@news.tufts.edu>	<mailman.904.1159473884.10491.python-list@python.org>	<JiWSg.50$1n3.567@news.tufts.edu>
	<mailman.905.1159476256.10491.python-list@python.org>
Message-ID: <Oq9Tg.51$1n3.502@news.tufts.edu>

Steve Holden wrote:

> You're right, it *is* just a name change in the code, but if you *do* 
> later want to specialise the notebook behaviour you can replace the 
> assignment with a class definition without changing any of your other code.

Oh! I wasn't quite thinking along those lines, but now it sounds good! :)


From heikki at osafoundation.org  Mon Sep 25 20:57:59 2006
From: heikki at osafoundation.org (Heikki Toivonen)
Date: Mon, 25 Sep 2006 17:57:59 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <DYWdna65V66k5oXYnZ2dnUVZ_rCdnZ2d@comcast.com>

walterbyrd wrote:
> If so, I doubt there are many. 
> 
> I wonder why that is?

Software Development Magazine (maybe? been a while since I read the
article) interviews lots of programmers yearly, asking - among other
things - what programming languages they use. The article mentioned that
Python's share has grown by about 1% a year for several years in a row.
I think it was around 10-13% a year or two ago.

Interestingly enough, Pythonistas earned relatively high salaries
compared to others.

-- 
  Heikki Toivonen


From bignose+hates-spam at benfinney.id.au  Thu Sep 21 22:17:15 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Fri, 22 Sep 2006 12:17:15 +1000
Subject: Don't use regular expressions to "validate" email addresses
References: <87lkoczp48.fsf_-_@benfinney.id.au>
	<323f01c6dde5$d04af360$0301a8c0@Mesa.com>
Message-ID: <87hcz0zluc.fsf@benfinney.id.au>


[Please don't top-post above the text you're replying to.]

"bruce" <bedouglas at earthlink.net> writes:
> if you were creating a web app with an email form... rather than try
> to check if the email is valid...

Where did I advise not checking? I advised the only kind of check that
actually works.

> you'd create something to allow anyone to potentially spam the hell
> out of a system...

If the system allows anyone to register email addresses rapidly and
continually send emails, *that's* what needs to be fixed.

> my two cents worth... try to verify/validate that the email is
> valid, and possibly belongs to the user...

I hope you're not seriously suggesting that any kind of "validation"
of the text of an email address, without any attempt to use that email
address, can give any information about whether that email address
"belongs" to the user of a web application.

There are basic checks that can be done to say "no, this is not an
email address"; for instance, if there's no '@' symbol at all, it
doesn't meet RFC 2821's definition of an email address.

But if one reads that specification, it's astoundingly liberal on what
*is* permitted in an email address; any attempt to throw out strings
of characters as "not an email address" is either doomed to discard
many perfectly valid email addresses, or to be hideously complex and
prone to failure.

My understanding of the "validation" that was being discussed was that
it was not "does this email address belong to a particular person?",
but rather "if I attempt to use this string of characters as an email
address, can I expect messages to be delivered?"

The former is flatly impossible by an examination of the email
address. The latter is seductive, but also practically impossible
short of actually sending a message.

-- 
 \          "About four years ago, I was -- no, it was yesterday."  -- |
  `\                                                     Steven Wright |
_o__)                                                                  |
Ben Finney



From http  Fri Sep  8 19:49:33 2006
From: http (Paul Rubin)
Date: 08 Sep 2006 16:49:33 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
Message-ID: <7xmz995376.fsf@ruckus.brouhaha.com>

"bvdp at xplornet.com" <bvdp at xplornet.com> writes:
> seq = [2, 3, 1, 9]
> tmp = []
> for a in range(len(seq)):
>         tmp.extend([a]*seq[a])
> 
> which correctly returns:
> 
> [0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
> 
> Question is, can I do this as a list comprehension?

import operator
x = reduce(operator.add, ([i]*a for i,a in enumerate(seq)), [])


From lycka at carmen.se  Thu Sep 14 06:04:11 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Thu, 14 Sep 2006 12:04:11 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158149755.247023.249990@d34g2000cwd.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.333.1158060193.5279.python-list@python.org>
	<1158078076.198865.6690@e63g2000cwd.googlegroups.com>
	<ee8ovi$5k1$1@wake.carmen.se>
	<1158149755.247023.249990@d34g2000cwd.googlegroups.com>
Message-ID: <eeb9er$s3i$1@wake.carmen.se>

Paul Boddie wrote:
> Well, if the client is free not to bother signalling anything about
> erroneous value types, one has to wonder why there's so much of a
> specification.

If you read it, I think you'll notice that the committee has
managed to produce a lot of text without spending too much
ink on error handling. I'm not completely up to date with
the latest standards, but last time I looked, a lot of things
that are essential parts of all serious implementations were
missing from the standards.

I'm pretty certain it would overwhelm the SQL standards committee
if they had to specify how error conditions are handled.

It would certainly be useful though. E.g. is PostgreSQL SQL
compliant in forcing a rollback as soon as an operation
fails. E.g. in Oracle, you can have a transaction with a
loop where you try to insert values, and fall back to updating
instead if you get a duplicate key on insert error. In PostgreSQL
you need to set a savepoint before the the insert and rollback
to that. Does the standard say whether this is kosher? I think
not.


From tyler.retzlaff at gmail.com  Wed Sep  6 20:45:53 2006
From: tyler.retzlaff at gmail.com (tyler)
Date: 6 Sep 2006 17:45:53 -0700
Subject: python extension modules within packages not loading
Message-ID: <1157589953.046451.75510@i3g2000cwc.googlegroups.com>

I've written a small python extension but I'm having difficulty loading
it at runtime.  The source for my extension is a module which is a
member of a package is organized as follows.

test/setup.py
test/myutils/__init__.py
test/myutils/netmodule.c

my setup.py file for building / installing looks like this

setup(ext_package = 'myutils',
    ext_modules = [ Extension('net', sources = [ 'myutils/netmodule.c'
]) ],
    packages = [ 'myutils'])

as per the faq I've been building and installing it with

python setup.py build
python setup.py install

which results in the following being installed into my site-packages
directory.

/usr/lib/python2.4/site-packages/myutils/__init__.py
/usr/lib/python2.4/site-packages/myutils/__init__.pyc
/usr/lib/python2.4/site-packages/myutils/net.so

when I run the interpreter and try to import the modules however I get
no joy.

>>>import myutils
>>>import myutils.net
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: No module named net

now annoyed I strace the interpreter during the loading of the module
and see.

stat64("myutils", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("myutils/__init__.py", {st_mode=S_IFREG|0644, st_size=0, ...}) =
0
stat64("myutils/__init__", 0xbf8d3a6c)   = -1 ENOENT (No such file or
directory)
open("myutils/__init__.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such
file or directory)
open("myutils/__init__module.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No
such file or directory)
open("myutils/__init__.py", O_RDONLY|O_LARGEFILE) = 3

clearly the above corresponds to my first import statement and it
appears to have been successful.  A little further along in the trace
however I see the following.

stat64("myutils", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("myutils/net", 0xbf8d3ebc)        = -1 ENOENT (No such file or
directory)
open("myutils/net.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file
or directory)
open("myutils/netmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such
file or directory)
open("myutils/net.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file
or directory)
open("myutils/net.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file
or directory)

clearly the above corresponds to my second import statement but for
some reason it fails with ENOENT when trying to open myutils/net.so
which definately exists.

Noticing it appears to be using a relative path I decided to try again
and this time I chdir() to /usr/lib/python2.4/site-extensions directory
before launching the interpreter and it then it works perfectly fine.
Of course I shouldn't have to set my cwd to the site-extensions
directory before using my extension module..

How do I fix this?  What have I done wrong?

Help very much appreciated, thanks.

Tyler



From st at tobiah.org  Thu Sep 14 17:55:20 2006
From: st at tobiah.org (tobiah)
Date: Thu, 14 Sep 2006 14:55:20 -0700
Subject: How to convert a timedelta object to a string?
In-Reply-To: <mailman.107.1158269117.10491.python-list@python.org>
References: <mailman.104.1158267229.10491.python-list@python.org>	<4509b8b4$0$19672$88260bb3@free.teranews.com>
	<mailman.107.1158269117.10491.python-list@python.org>
Message-ID: <4509c2b5$0$19721$88260bb3@free.teranews.com>


> Well, kinda, although I can work with this, str(tdobject) returns a 
> string that looks like:
> 
> -1 day, 7:34:32

Oh yeah.  I had tried it on a positive timedelta, which does give HH:MM:SS

-- 
Posted via a free Usenet account from http://www.teranews.com



From pipiten at gmail.com  Wed Sep 20 09:06:28 2006
From: pipiten at gmail.com (Pipiten)
Date: 20 Sep 2006 06:06:28 -0700
Subject: Pyglade, gtk, howto write more efficiently, and waste less code?
In-Reply-To: <4naeu8F9gcq9U1@individual.net>
References: <1158675825.605612.313830@i42g2000cwa.googlegroups.com>
	<4naeu8F9gcq9U1@individual.net>
Message-ID: <1158757588.355767.10390@k70g2000cwa.googlegroups.com>

Thanks thomas!, i did it that way ;).

maybe someone can help me with this, it seems simple, but i don`t know
how to do it.

I have:
        self.paths = ["","path1","path2","path3","path4","path5"]
	self.paths[1] = self.wTree.get_widget("path1")
	self.paths[2] = self.wTree.get_widget("path2")
	self.paths[3] = self.wTree.get_widget("path3")
	self.paths[4] = self.wTree.get_widget("path4")
	self.paths[5] = self.wTree.get_widget("path5")

what about if i have 30 widgets? how can i "get" them all?

.. variables variables?  ??



thanks everybody, good luck



From ilias at lazaridis.com  Sat Sep  2 12:41:14 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 2 Sep 2006 09:41:14 -0700
Subject: CONSTRUCT -
Message-ID: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>

I would like to fulfill the following task:

The construct:

if __name__ == '__main__':

should be changed to something like:

if identifier.name == '__main__':

The term "identifier" should be selected based on the meaning of the
__double-underscore-enclosure__ of the entities.

-

What I would need to know is:

a) what would be the correct term for "identifier"?

b) is there a standard way to implement such an access mechanism in an
generic way?

c) is there an advanced mechanism available, which would allow to
implement a prefix (e.g. %name)

-

Context:
http://case.lazaridis.com/wiki/Lang
http://case.lazaridis.com/ticket/6



From paul at boddie.org.uk  Tue Sep 26 12:42:13 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 26 Sep 2006 09:42:13 -0700
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<slrnehibsm.9o0.jon+usenet@snowy.squish.net>
	<mailman.687.1159280315.10491.python-list@python.org>
	<slrnehidr6.9o0.jon+usenet@snowy.squish.net>
	<mailman.690.1159282116.10491.python-list@python.org>
	<slrnehig0d.9o0.jon+usenet@snowy.squish.net>
	<mailman.698.1159283878.10491.python-list@python.org>
	<slrnehihk6.9o0.jon+usenet@snowy.squish.net>
	<mailman.704.1159285432.10491.python-list@python.org>
	<slrnehij7q.evq.jon+usenet@snowy.squish.net>
	<mailman.709.1159287292.10491.python-list@python.org>
Message-ID: <1159288933.667822.269000@h48g2000cwc.googlegroups.com>

Simon Brunning wrote:
> On 26 Sep 2006 15:53:46 GMT, Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:
> > To be honest I'm not sure what *sort* of code people test this way. It
> > just doesn't seem appropriate at all for web page generating code. Web
> > pages need to be manually viewed in web browsers, and validated, and
> > checked for accessibility. Checking they're equal to a particular
> > string just seems bizarre (and where does that string come from
> > anyway?)
>
> The kind of acceptance testing that you are talking about is very
> important, but you can't automate "Does it look OK in a browser?".
> Unit tests suitable for automation don't have anything to work with
> *but* the generated HTML.

I can understand the disbelief that a straight string comparison
involving HTML might be a robust enough test for the output of a Web
application, given that potentially many equivalent representations of
some piece of text may exist, and especially given the typical
unpredictability of many XML-based solutions with respect to things
like whitespace, encodings, entity usage, and the like. On the other
hand, the initial complaint in this thread, whilst reasonable in the
context of some ideal function for "quoting stuff in HTML pages", is
somewhat inappropriate in the context of modifying an existing, mature
function which is now in ubiquitous usage. In order to minimise the
unpredictability of solutions, we should avoid making fundamental
changes especially at the lower levels of such solutions.

I can't remember whether I have any code using cgi.escape, although
since I usually use XML APIs rather than writing HTML manually, I
suspect that I haven't. Nevertheless, the breakage potentially caused
by even one call site involving a modified variant of cgi.escape would
be enough for most people to consider reimplementing the semantics of
the existing function, thus undermining the inclusion of such a
function in the standard library in the first place.

Paul



From gry at ll.mit.edu  Wed Sep 13 21:29:53 2006
From: gry at ll.mit.edu (gry at ll.mit.edu)
Date: 13 Sep 2006 18:29:53 -0700
Subject: parameter files
References: <1158190017.832356.180050@h48g2000cwc.googlegroups.com>
Message-ID: <1158197393.728067.179420@e3g2000cwe.googlegroups.com>

Russ wrote:
> I have a python module (file) that has a set of parameters associated
> with it. Let's say the module is called "code.py." I would like to keep
> the parameter assignments in a separate file so that I can save a copy
> for each "run" without having to save the entire code.py file. Let's
> say the parameter file is called "parameters.py."
>
> Normally, code.py would simply import the parameters.py file. However,
> I don't want the parameters to be accessible to any other file that
> imports the code.py file. to prevent such access, I preface the name of
> each parameter with an underscore. But then the parameters aren't even
> visible in code.py! So I decided to use "execfile" instead of import so
> the parameters are visible.
>
> That solved the problem, but I am just wondering if there is a better
> and/or more standard way to handle a situation like this. Any
> suggestions? Thanks.

I would try a configuration file, instead of a python module.
See ConfigParser:
<http://docs.python.org/lib/module-ConfigParser.html>.
You can save values for each "run" in a separate [section].
Execfile is a pretty big hammer for this.

-- George



From meyer at acm.org  Wed Sep  6 14:17:45 2006
From: meyer at acm.org (Andre Meyer)
Date: Wed, 6 Sep 2006 20:17:45 +0200
Subject: python vs java
In-Reply-To: <87120ef50609060828q1c90cdd4p4b1e5b7a46f99a63@mail.gmail.com>
References: <edmefq$t5n$1@news4.fe.internet.bosch.com>
	<87120ef50609060828q1c90cdd4p4b1e5b7a46f99a63@mail.gmail.com>
Message-ID: <7008329d0609061117t614bbe8bx494c0d2ac056d8e4@mail.gmail.com>

http://www.ferg.org/projects/python_java_side-by-side.html
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From none at none.com  Sat Sep 16 14:28:24 2006
From: none at none.com (SteveF)
Date: Sat, 16 Sep 2006 14:28:24 -0400
Subject: 911 FORGERY bigger than the Protocols of the Learned Elders of
	Zion
References: <1158425541.091561.152690@i42g2000cwa.googlegroups.com>
Message-ID: <5nXOg.2569$vi3.1719@bignews3.bellsouth.net>


<pope_ratzinger_benedict at india.com> wrote in message 
news:1158425541.091561.152690 at i42g2000cwa.googlegroups.com...
> Do not bury your head in the sand ... Do not practice denial ... It
> will only bring you to terrible shame and grief ... Do not be afraid of
> saying the truth ... Do not be afraid of death ... God will take care
> of you and your kins as he took care of the flock of Abraham, Moses and
> Jesus.
>
> Here you will find all the truth, movies, audios and proof for your
> eyes to see (even the swiss are beginning to doubt 911) :
>

[snip]

I just want to know how long it takes you to type this out while wearing a 
strait jacket.  Do you hold the pencil in your mouth and peck away?  Or does 
your mouth get tired and you have someone stick the pencil up your nose?

Steve.




From michele.simionato at gmail.com  Mon Sep 11 03:05:28 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 11 Sep 2006 00:05:28 -0700
Subject: super and __init__
In-Reply-To: <1157741577.676925.288290@h48g2000cwc.googlegroups.com>
References: <1157741577.676925.288290@h48g2000cwc.googlegroups.com>
Message-ID: <1157958328.733389.39100@b28g2000cwb.googlegroups.com>

Noah wrote:
> Am I the only one that finds the super function to be confusing?

No, see for instance http://fuhm.net/super-harmful/

     Michele Simionato



From mensanator at aol.com  Mon Sep 11 21:32:15 2006
From: mensanator at aol.com (mensanator at aol.com)
Date: 11 Sep 2006 18:32:15 -0700
Subject: Parsing String, Dictionary Lookups, Writing to Database Table
References: <mailman.277.1157994284.5279.python-list@python.org>
Message-ID: <1158024735.947206.105510@m73g2000cwd.googlegroups.com>

Rich Shepard wrote:
> I need to learn how to process a byte stream from a form reader where each
> pair of bytes has meaning according to lookup dictionaries, then use the
> values to build an array of rows inserted into a sqlite3 database table.
>
>    Here's the context: The OMR card reader sends a stream of 69 bytes over
> the serial line; the last byte is a carriage return ('\r') indicating the
> end of record. Three pairs (in specific positions at the beginning of the
> stream) represent blanks (no value); two other pairs represent character
> strings; the values are determined from two dictionaries. The remaining 28
> pairs represent values from a third dictionary.
>
>    What I'm doing: I think that I have the first part correct; that is, the
> three blanks and two string values. The first three dictionaries are:
>
>      DATA_MAP_BLANK = {
>        chr(32)+chr(32): 0       # SP + SP
>        }
>      DATA_MAP_2 = {
>        chr(32)+chr(36): 'nat',  # SP + $
>        chr(96)+chr(32): 'eco',  #   + SP
>        chr(36)+chr(32): 'soc'   #  $ + SP
>        }
>      DATA_MAP_5 = {
>        chr(32)+chr(36): 'pro',  # SP + $
>        chr(96)+chr(32): 'neu',  #   + SP
>        chr(36)+chr(32): 'con'   #  $ + SP
>        }
>
>    I read the data into a string and split that into byte tokens, then start
> building the row to be inserted into a database table:
>
>      line = ser.readline()
>      split_line = line.split()
>
>      # then pre-pend the record number to the front of the row
>      row.join(', ', vote_id)
>
>      # extract category choice (row 2, bytes 2 and 3); look up value in dictionary
>      cat = split_line(2:4)
>      row.join(', ', DATA_MAP_2(cat) # I'm not sure this is a correct lookup
>
>      # extract position (row 5, bytes 8 and 9P; look up value in dictionary
>        pos = split_line(8:10)
>        row.join(', ', DATA_MAP_5(pos))
>
>    Is the above the most 'correct' way of extracting specific byte pairs,
> using them as dictionary keys to get values, then build a string of
> comma-and-quote values for insertion in the database table?

No, if you're going to insert into sqlite3, you don't want a
csv string, you want a list of values (see example code
below).

>
>    Then, I've no idea how to get the rest of the data parsed for use as keys
> in the last data mapping dictionary. I do not see a skip value for slicing,
> other than in Numeric Python, and I'm not yet building an array of data.
>
>    Here's the last dictionary:
>
>      DATA_MAP_7 = {
>        chr(32)+chr(16): 1.000,  # SP + DLE
>        chr(32)+chr(8): 2.000,   # SP + BS
>        chr(32)+chr(4): 3.000,   # SP + EOT
>        chr(32)+chr(2): 4.000,   # SP + STX
>        chr(32)+chr(1): 5.000,   # SP + SOH
>        chr(64)+chr(32): 6.000,  #  @ + SP
>        chr(16)+chr(32): 7.000,  # DLE + SP
>        chr(8)+chr(32): 8.000,   # BS + SP
>        chr(4)+chr(32): 9.000,   # EOT + SP
>        chr(34)+chr(8): 0.500,   #  " + BS
>        chr(34)+chr(4): 0.333,   #  " + EOT
>        chr(34)+chr(2): 0.025,   #  " + STX
>        chr(34)+chr(1): 0.200,   #  " + SOH
>        chr(66)+chr(32): 0.167,  #  B + SP
>        chr(18)+chr(32): 0.143,  # DC2 + SP
>        chr(10)+chr(32): 0.125,  # LF + SP
>        chr(6)+chr(32): 0.111    # ACK + SP
>        }
>
>    I know how I'd do all this in C, but since I'm learning python I have not
> found how best to accomplish this despite the books and online references
> I've read.

As I'm now an expert in sqlite3, here's a sample program that
may do what you need. Note, I had to create some test data.
Make sure it's correct with regards to how your input stream
works.

Also, if vote_id is autoincrement, that's one less thing your
program has to do.

import sqlite3
import random

con = sqlite3.connect(":memory:")
cur = con.cursor()

cur.execute("""
CREATE TABLE test (vote_id integer primary key autoincrement,
                   category text,
                   position text,
                   f01 real,
                   f02 real,
                   f03 real,
                   f04 real,
                   f05 real,
                   f06 real,
                   f07 real,
                   f08 real,
                   f09 real,
                   f10 real,
                   f11 real,
                   f12 real,
                   f13 real,
                   f14 real,
                   f15 real,
                   f16 real,
                   f17 real,
                   f18 real,
                   f19 real,
                   f20 real,
                   f21 real,
                   f22 real,
                   f23 real,
                   f24 real,
                   f25 real,
                   f26 real,
                   f27 real,
                   f28 real,
                   f29 real)
""")

DATA_MAP_BLANK = {chr(32)+chr(32):0}

DATA_MAP_2     = {chr(32)+chr(36): 'nat', \
                  chr(96)+chr(32): 'eco', \
                  chr(36)+chr(32): 'soc'}

DATA_MAP_5     = {chr(32)+chr(36): 'pro', \
                  chr(96)+chr(32): 'neu', \
                  chr(36)+chr(32): 'con'}

DATA_MAP_7     = {chr(32)+chr(16): 1.000, \
                  chr(32)+chr(8):  2.000, \
                  chr(32)+chr(4):  3.000, \
                  chr(32)+chr(2):  4.000, \
                  chr(32)+chr(1):  5.000, \
                  chr(64)+chr(32): 6.000, \
                  chr(16)+chr(32): 7.000, \
                  chr(8)+chr(32):  8.000, \
                  chr(4)+chr(32):  9.000, \
                  chr(34)+chr(8):  0.500, \
                  chr(34)+chr(4):  0.333, \
                  chr(34)+chr(2):  0.025, \
                  chr(34)+chr(1):  0.200, \
                  chr(66)+chr(32): 0.167, \
                  chr(18)+chr(32): 0.143, \
                  chr(10)+chr(32): 0.125, \
                  chr(6)+chr(32):  0.111}

# create test data
DM2_key = DATA_MAP_2.keys()
DM5_key = DATA_MAP_5.keys()
DM7_key = DATA_MAP_7.keys()
DM7_key.extend(DM7_key)

for i in xrange(10):
    random.shuffle(DM2_key)
    random.shuffle(DM5_key)
    random.shuffle(DM7_key)

    test = '  ' + DM2_key[0] + '    ' + DM5_key[0]
    for i in xrange(29):
        test = test + DM7_key[i]

    values = [DATA_MAP_2[test[2:4]],DATA_MAP_5[test[8:10]]]
    for i in xrange(10,68,2):
        values.append(DATA_MAP_7[test[i:i+2]])

    cur.execute("""
INSERT INTO test ( category,
                   position,
                   f01,
                   f02,
                   f03,
                   f04,
                   f05,
                   f06,
                   f07,
                   f08,
                   f09,
                   f10,
                   f11,
                   f12,
                   f13,
                   f14,
                   f15,
                   f16,
                   f17,
                   f18,
                   f19,
                   f20,
                   f21,
                   f22,
                   f23,
                   f24,
                   f25,
                   f26,
                   f27,
                   f28,
                   f29)
VALUES
(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"""
,values)


# read back what was inserted to verify
cur.execute("""SELECT * FROM test""")
d = cur.fetchall()

for i in d:
    print
    print
    print "Record: %d  Category: %s  Position: %s" % (i[0],i[1],i[2])
    print '-'*40,
    count = 0
    for j in i[3:31]:
        if (count % 6)==0: print '\n',
        print '%0.3f ' % (j),
        count += 1

##  Sample run
##
##    Record: 1  Category: soc  Position: con
##    ----------------------------------------
##    0.111  0.125  0.200  3.000  3.000  6.000
##    9.000  5.000  8.000  7.000  0.333  0.500
##    7.000  0.025  0.167  5.000  8.000  4.000
##    2.000  1.000  0.200  0.143  0.025  9.000
##    1.000  0.143  0.111  6.000
##
##    Record: 2  Category: soc  Position: neu
##    ----------------------------------------
##    0.500  0.333  5.000  1.000  0.143  2.000
##    0.500  6.000  0.200  1.000  2.000  0.333
##    8.000  0.125  0.143  0.111  0.200  9.000
##    4.000  7.000  3.000  0.167  9.000  8.000
##    7.000  0.167  0.111  4.000
##
##    Record: 3  Category: soc  Position: pro
##    ----------------------------------------
##    0.025  0.333  0.167  7.000  0.333  1.000
##    0.200  3.000  0.111  1.000  6.000  5.000
##    0.111  9.000  0.143  0.025  7.000  8.000
##    0.143  9.000  0.500  8.000  0.125  2.000
##    4.000  3.000  5.000  0.200
##
##    Record: 4  Category: eco  Position: neu
##    ----------------------------------------
##    2.000  8.000  3.000  4.000  0.125  0.167
##    0.125  6.000  0.143  0.025  0.025  0.500
##    7.000  2.000  0.111  3.000  4.000  9.000
##    0.167  0.500  0.200  8.000  0.333  1.000
##    9.000  0.111  7.000  5.000
##
##    Record: 5  Category: nat  Position: con
##    ----------------------------------------
##    9.000  0.333  1.000  7.000  9.000  0.111
##    0.200  0.333  5.000  0.500  0.500  5.000
##    2.000  8.000  2.000  0.125  4.000  4.000
##    0.025  0.200  0.125  0.111  3.000  6.000
##    7.000  8.000  0.167  0.167
##
##    Record: 6  Category: eco  Position: pro
##    ----------------------------------------
##    2.000  0.200  0.167  5.000  3.000  4.000
##    0.333  8.000  0.200  0.025  5.000  0.143
##    9.000  0.167  0.125  0.111  7.000  0.025
##    0.111  6.000  0.333  1.000  0.500  0.500
##    0.125  0.143  1.000  3.000
##
##    Record: 7  Category: soc  Position: neu
##    ----------------------------------------
##    0.333  1.000  0.500  0.167  0.111  5.000
##    9.000  0.143  6.000  0.125  4.000  6.000
##    3.000  0.143  0.125  7.000  0.200  4.000
##    2.000  0.025  0.167  7.000  8.000  3.000
##    9.000  0.025  5.000  0.111
##
##    Record: 8  Category: eco  Position: pro
##    ----------------------------------------
##    6.000  2.000  0.125  3.000  4.000  0.025
##    0.167  5.000  0.025  0.143  0.111  0.200
##    2.000  1.000  4.000  0.167  7.000  0.111
##    5.000  0.500  6.000  8.000  1.000  0.333
##    0.125  9.000  0.200  9.000
##
##    Record: 9  Category: soc  Position: pro
##    ----------------------------------------
##    3.000  0.500  0.143  7.000  5.000  6.000
##    4.000  0.333  0.025  1.000  0.200  3.000
##    9.000  8.000  6.000  0.500  0.111  1.000
##    0.333  0.167  0.025  5.000  8.000  9.000
##    0.125  0.111  0.200  2.000
##
##    Record: 10  Category: soc  Position: con
##    ----------------------------------------
##    4.000  2.000  0.025  7.000  0.500  0.333
##    5.000  6.000  0.125  0.143  0.500  0.200
##    0.167  0.167  4.000  9.000  9.000  6.000
##    0.111  0.200  0.143  0.333  1.000  2.000
##    0.125  3.000  8.000  3.000



>
> TIA,
>
> Rich
>
> --
> Richard B. Shepard, Ph.D.               |    The Environmental Permitting
> Applied Ecosystem Services, Inc.(TM)    |            Accelerator
> <http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863



From claird at lairds.us  Sun Sep 17 11:53:07 2006
From: claird at lairds.us (Cameron Laird)
Date: Sun, 17 Sep 2006 15:53:07 +0000
Subject: tcl list to python list?
References: <1158459542.693284.98090@h48g2000cwc.googlegroups.com>
	<CE4Pg.4266$vD2.1873@tornado.texas.rr.com>
Message-ID: <3k70u3-3d8.ln1@lairds.us>

In article <CE4Pg.4266$vD2.1873 at tornado.texas.rr.com>,
Paul McGuire <ptmcg at austin.rr._bogus_.com> wrote:
><jerry.levan at gmail.com> wrote in message 
>news:1158459542.693284.98090 at h48g2000cwc.googlegroups.com...
>> Hi,
>>
>> I have a file that contains a "tcl" list stored as a string.  The list
>> members are
>> sql commands ex:
>> { begin { select * from foo
>>                where baz='whatever'}
>>  {select * from gooble } end
>>  { insert into bar values('Tom', 25) } }
>>
>> I would like to parse the tcl list into a python list...
>>
>> Any suggestions ( I am running Tkinter...)
>>
>> Jerry
>>
>
>This is very similar to the Python list parser that comes with pyparsing. 
>Adapted to your syntax, this looks something like:
>
>tcl = """sql commands ex:
> { begin { select * from foo
>                where baz='whatever'}
>  {select * from gooble } end
>  { insert into bar values('Tom', 25) } }"""
>
>from pyparsing import *
>
>tcllist = Forward()
>element = quotedString | Word(alphas,alphanums+"_") | \
>          Combine(Word(nums) + "." + Optional(Word(nums)) ) | Word(nums) | \
>          oneOf( list(r"(),.+=`~!@#$%^&*-|\?/><;:") ) | Group( '{' + tcllist 
>+ '}' )
>tcllist << OneOrMore( element )
>
>import pprint
>pprint.pprint( tcllist.parseString(tcl).asList() )
>
>Giving:
>
>['sql',
> 'commands',
> 'ex',
> ':',
> ['{',
>  'begin',
>  ['{', 'select', '*', 'from', 'foo', 'where', 'baz', '=', "'whatever'", 
>'}'],
>  ['{', 'select', '*', 'from', 'gooble', '}'],
>  'end',
>  ['{', 'insert', 'into', 'bar', 'values', '(', "'Tom'", ',', '25', ')', 
>'}'],
>  '}']]
>
>The pyparsing home page is at pyparsing.wikispaces.com.
>
>-- Paul
>
>

Noooooooooooooooooo!

I'll be more precise:  pyparsing is quite wonderful, and I'm
all in favor of clever demonstrations of its capabilities.  I
don't think this is one, though; in fact, although I haven't
yet paid enough attention to the original question to provide
an example, I'm reasonably certain that the code offered above
mishandles at least some data (Tcl syntax is different from
what outsiders expect).

Paddy's advice elsewhere in this thread is almost entirely
correct.  Anyone who has imported Tkinter has all of Tcl avail-
able immediately, so much the easiest, most reliable, most
maintainable, and most lucid solution is simply to iterate in
Tcl over the list, and construct thus the corresponding Python
list.

I'm willing to write either a correct implementation, or a
counterexample with problematic data, if these sufficiently
interest readers.  It'll be a day or two before I can make the
time to be careful, though.


From bray at sent.com  Mon Sep 11 11:19:19 2006
From: bray at sent.com (bray at sent.com)
Date: Mon, 11 Sep 2006 10:19:19 -0500
Subject: ANN: ChiPy Thurs. September 14, 2006. 7pm @ Google, Chicago
Message-ID: <1157987959.23579.270631250@webmail.messagingengine.com>

Chicago Python User Group
=========================

Come join us for our best meeting ever!

Topics
------

* Google Code (Brian Fitzpatrick and Ben Collins-Sussman)
* Trac + Subversion + doctests (Garrett Smith)
* Special method names for operator overloading (Brian Ray)

Location
--------

Google's Chicago office
20 West Kinzie Street, 9th Floor
Chicago, IL 60610

Location description:
"18 story glass and steel building on the Northwest corner of Dearborn
and Kinzie."
"Across the street from Harry Carey's"
"Upstairs from Keefer's restaurant"

* Map <http://tinyurl.com/ee8my>

Enter via the lobby on the South side of the building, between Keefer's
restaurant and Keefer's cafe.

Street (meter) parking is kinda sorta available in the area. Garage and
lot parking is also available Southwest and East of our building.

 1. The closest "L" stop is Grand on the Red Line and Clark/Lake on the
 "Blue/Green/Orange/Brown/Purple Line". (All are about an 8 minute walk
 from Google)
 2. The closest Metra station is the Ogilvie Transportation Center (in
 the Citibank building) (about 20 minutes walk or take the Riverbus)
 3. The closest River Bus stop is at Michigan Avenue (By the Wrigley
 Building at 2 North Riverside Plaza.
 (<http://www.wendellariverbus.com/rbdock.htm>) ;-)
 4. The nearest helipad is at the mouth of the river, near Navy Pier. 
 Obtain security clearance before landing.

*** A Special Note from Fitz::

  I'm going to need a list of all people attending to give to building
  security, so if you're thinking of coming, please send me your name
  (just to me--use my fitz at google dot com address please).

About ChiPy
-----------

ChiPy is a group of Chicago Python Programmers, l33t, and n00bs.
Meetings are held monthly at various locations around Chicago.
Also, ChiPy is a proud sponsor of many Open Source and Educational
efforts in Chicago. Stay tuned to the mailing list for more info.

ChiPy website: <http://chipy.org>
ChiPy Mailing List: <http://mail.python.org/mailman/listinfo/chicago>
Python website: <http://python.org>

----

Forward this on.




From aahz at pythoncraft.com  Sun Sep  3 15:48:26 2006
From: aahz at pythoncraft.com (Aahz)
Date: 3 Sep 2006 12:48:26 -0700
Subject: Timeline for Python?
References: <mailman.10185.1157035875.27775.python-list@python.org>
	<1157097423.946429.261370@p79g2000cwp.googlegroups.com>
Message-ID: <edfbia$fdv$1@panix3.panix.com>

In article <1157097423.946429.261370 at p79g2000cwp.googlegroups.com>,
crystalattice <crystalattice at gmail.com> wrote:
>
>I'd write for 2.4, even though 2.5 should be coming out "shortly".
>There aren't many significant changes to the whole language between 2.4
>and 2.5.  Probably the best thing is write for 2.4 and have a sidenote
>stating where 2.5 operates differently.

Speaking as the co-author of _Python for Dummies_:

That's bad advice -- there are three Python books already out (or out
within the next couple of weeks) that target 2.5: _Python in a Nutshell_,
_Core Python_, and _Python for Dummies_.  _Python for Dummies_ had an
edit cycle after 2.5b1, so there should be little difference between that
and the released version.  A book scheduled for publication a year from
now should absolutely target 2.5 or risk looking dated.

There are in fact a lot of new features in 2.5: conditional expressions;
relative imports; unified try/except/finally; generators getting send(),
throw(), and close(); the with statement.  That doesn't even include
critical library features such as sqlite and ElementTree.

OTOH, I do agree that any book written should include diferences between
2.5 and earlier versions for the benefit of people needing to target
earlier or multiple versions.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

I support the RKAB


From ingo.bear_NOSPAM at freenet.de  Sun Sep 24 06:47:54 2006
From: ingo.bear_NOSPAM at freenet.de (Ingo Linkweiler)
Date: Sun, 24 Sep 2006 12:47:54 +0200
Subject: Verify an e-mail-adress - syntax and dns
In-Reply-To: <4nn3ceFb3d5fU1@individual.net>
References: <ef5hsc$8ig$1@news01.versatel.de> <4nn3ceFb3d5fU1@individual.net>
Message-ID: <ef5nop$aoh$1@news01.versatel.de>

Bjoern Schliessmann schrieb:
> Ingo Linkweiler wrote:
> 
>> b) verify an existing mailserver or DNS/MX records
> 
> "Or"? That's two different things.
> 
> If you don't know already: Even if you test all this, it is still
> possible that
> 
> - the target mail account doesn't exist
> - the sender's IP is filtered by the server so he'll reject

Yes, I know this.
But its still better than not checking it.
The script will be used as part auf a user registration page to avoid 
dummy-inputs like "jsfhsadgfa at hdhjdfhjh.net"



From gagsl-py at yahoo.com.ar  Thu Sep 14 00:18:32 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 14 Sep 2006 01:18:32 -0300
Subject: time-based point system
In-Reply-To: <1158205582.339882.23000@i3g2000cwc.googlegroups.com>
References: <1158203958.051530.277810@d34g2000cwd.googlegroups.com>
	<0bydnWOlFPcHUZXYnZ2dnUVZ_qudnZ2d@speakeasy.net>
	<1158205582.339882.23000@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060914011213.057041a8@yahoo.com.ar>

At Thursday 14/9/2006 00:46, Jay wrote:

>Okay, this is a game.  So the points are abstract.  It's like an arcade
>game in respect to the points.  They don't actually mean or represent
>anything.  The only point is to get a high score.  The idea is that the
>faster the user acts (or reacts) the greater amount of points they'll
>receive.  Simplified, I need a fuction or statement that takes in a
>small number and spits out a big number.  The smaller the input, the
>larger the output.

1/x, or 1000/x, or 1000-x, or 1000*exp(-x) or ...
All decline differently, play drawing them and choose whatever tastes you more.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From bdesth.quelquechose at free.quelquepart.fr  Sun Sep 17 09:31:41 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sun, 17 Sep 2006 15:31:41 +0200
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <18oehqziifr36.1h6zhiw7sysmy.dlg@40tude.net>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
	<18oehqziifr36.1h6zhiw7sysmy.dlg@40tude.net>
Message-ID: <450d4ae7$0$626$636a55ce@news.free.fr>

Thorsten Kampe a ?crit :
(snip)
> PS Actually the author wrote the finest and best Windows Editor and I
> also use EditPad Pro under Linux (together with Wine) because of the
> lack of usables editors under Linux.

I guess we don't have the same definition of a "usable" editor...


From michele.simionato at gmail.com  Thu Sep 28 03:26:23 2006
From: michele.simionato at gmail.com (Michele Simionato)
Date: 28 Sep 2006 00:26:23 -0700
Subject: a different question: can you earn a living with *just* python?
In-Reply-To: <roy-491DC0.20514927092006@reader2.panix.com>
References: <zkfSg.30$1n3.400@news.tufts.edu>
	<1159368408.593970.110380@k70g2000cwa.googlegroups.com>
	<roy-D89592.19581727092006@reader2.panix.com>
	<mailman.845.1159401951.10491.python-list@python.org>
	<roy-491DC0.20514927092006@reader2.panix.com>
Message-ID: <1159428383.300077.321450@m73g2000cwd.googlegroups.com>

Roy Smith wrote:
> The problem is, if the complex features are there, people will use them.
> On any large project, there will always be some people who revel in using
> every obscure feature of a language.  That forces everybody else on the
> team (and all future members of the team) to know (or learn) those features
> in order to be able to use and maintain the code base.

Well, I am sympathetic with your point and I actually would have no
problem if metaclasses
and multiple inheritance were removed from the language. However my
point was a
different one. If you know all this stuff, you are likely to be able to
learn any language.
My point was that when hiring a programmer, one should also look at the
potential of the
person, not only at his/her present skills.

       Michele Simionato



From mattheww at chiark.greenend.org.uk  Wed Sep 27 16:58:28 2006
From: mattheww at chiark.greenend.org.uk (Matthew Woodcraft)
Date: 27 Sep 2006 21:58:28 +0100 (BST)
Subject: optparse docs
References: <451ab7f6$0$19636$88260bb3@free.teranews.com>
Message-ID: <WRm*9LRrr@news.chiark.greenend.org.uk>

tobiah  <toby at tobiah.org> wrote:
> In
> 	http://docs.python.org/lib/optparse-terminology.html
>
> The GNU project introduced "-" followed by a series of hyphen-separated 
> words, e.g. "-file" or "-dry-run". These are the only two option 
> syntaxes provided by optparse.

[...]

> So my question is whether the first 'GNU' version, was not meant to be
> --file, and --dry-run?

It is, and it's right in the documentation source. This is apparently a
problem with the conversion from LaTeX to html.

-M-



From fredrik at pythonware.com  Sun Sep  3 04:44:11 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 10:44:11 +0200
Subject: python loops
In-Reply-To: <1157187866.833841.295930@m79g2000cwm.googlegroups.com>
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>	<20060831193353.02FD61E4002@bag.python.org>	<mailman.10240.1157105262.27775.python-list@python.org>
	<1157187866.833841.295930@m79g2000cwm.googlegroups.com>
Message-ID: <ede4kq$7av$2@sea.gmane.org>

Nicko wrote:

> There's a huge difference between not being profligate with resources
> and premature optimisation. In the case of the idiom "for i in
> range(x):..." there absolutely no utility whatsoever in creating and
> recording the list of objects. Unless it makes a difference to code
> structure or maintainability, I think that not creating stacks of
> objects you don't need is basic code hygiene and not freakish premature
> optimisation.

for short lists, both objects create the *same* number of objects.

if you cannot refrain from pulling arguments out of your ass, you not 
really the right person to talk about hygiene.

</F>



From jon+usenet at unequivocal.co.uk  Tue Sep 26 07:53:16 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 11:53:16 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
	<slrnehfupe.6tm.jon+usenet@snowy.squish.net>
	<mailman.581.1159200379.10491.python-list@python.org>
	<slrnehg086.7sa.jon+usenet@snowy.squish.net>
	<mailman.585.1159204290.10491.python-list@python.org>
	<slrnehg3v0.7sa.jon+usenet@snowy.squish.net>
	<mailman.636.1159253196.10491.python-list@python.org>
	<slrnehhtdv.loa.jon+usenet@snowy.squish.net>
	<mailman.667.1159269127.10491.python-list@python.org>
Message-ID: <slrnehi54u.5gr.jon+usenet@snowy.squish.net>

In article <mailman.667.1159269127.10491.python-list at python.org>, Steve Holden wrote:
>> Why do you say that? I have confined myself to simple logical
>> arguments, and been frankly very restrained when presented with
>> rudeness and misunderstanding from other thread participants.
>> In what way should I have modified my postings?
> 
> Please allow me to apologise. I have clearly been confusing you with 
> someone else. A review of your contributions to the thread confirms your 
> asertion.

Oh, ok! You had me worried for a minute there ;-)


From bearophileHUGS at lycos.com  Mon Sep 18 20:27:05 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 18 Sep 2006 17:27:05 -0700
Subject: Read a group of files as a list
In-Reply-To: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
References: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
Message-ID: <1158625625.003467.275020@i42g2000cwa.googlegroups.com>

citlaly:
> I'm trying to use the files from a
> "folder" as a list. What I want to do is  read each one as a list, but
> just the name of the file, the data inside doesn't matter.

>>> import os
>>> os.listdir("...path...")
[.... file names... ]

If you are using Windows I suggest you to invert the slashes of the
path, so instead of:
"C:\WINNT\Fonts"
Use:
"C:/WINNT/Fonts"

Bye,
bearophile



From deets at nospam.web.de  Mon Sep 25 16:18:39 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 25 Sep 2006 22:18:39 +0200
Subject: R.S.I. solutions?
In-Reply-To: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
References: <1159211519.969504.263430@d34g2000cwd.googlegroups.com>
Message-ID: <4nqrt0Fbp16mU1@uni-berlin.de>

Paddy schrieb:
> All this keyboarding has finally caught up with me and I'm getting
> aches in my fingers.
> last weekend I did the round of the usual UK High Street shops - PC
> World, Currys and Comet. I finally got a new Microsoft 4000 ergonomic
> keyboard, but all the ergonomic Mice and trackballs were gone!.
> 
> I've finally tracked down a supplier with a large range of pointer
> devices:
>   http://www.keytools.co.uk/mice/default.asp
> But I am unable to try them out before I buy.
> 
> I was wondering if any Pythonistas had been through this and found
> something that worked for them?

I bought a TouchStream keyboard and could recommend it - but 
unfortunately they are out of business.

But I can share some other advice: go to a physiotherapist and let him 
show you some exercises for the back. My problems (both lower arms) 
stemmed from my back - even though that seems a bit strange at first.

By doing my exercises regularly I was able to reduce the pain 
significantly, and could start working with normal keyboards again (as 
my notebook has no touch stream).


Diez


From paul at boddie.org.uk  Fri Sep  8 19:09:38 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 8 Sep 2006 16:09:38 -0700
Subject: Javadoc style python manual?
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
	<1157733112.626057.74610@e3g2000cwe.googlegroups.com>
	<87hcziytt7.fsf@pobox.com>
Message-ID: <1157756978.657219.151310@h48g2000cwc.googlegroups.com>

John J. Lee wrote:
>

[epydoc on the standard library]

> Why do you expect to get useful docs that way?  The canonical Python
> stdlib docs live in LaTeX files, not in the docstrings.  You may find
> some useful bits and pieces in the docstrings too, or you may not.

But wasn't the questioner recommended to use pydoc, help and so on? As
far as I am aware, none of those things look in LaTeX files in order to
provide the documentation that they do dig up. It turns out that pydoc
(in graphical mode) manages to permit introspection of the known
modules on a system in a more presentable fashion than epydoc, although
epydoc is visually much more like javadoc. Still, both tools rely on
docstrings and might be adequate for packages outside the standard
library - it's just a shame that the standard library doesn't lend
itself as greatly to such inspection (with optimal results).

As far as the means of delivering the library documentation is
concerned, my understanding was that the LaTeX format approach wasn't
encouraging as many improvements to the library documentation as was
expected or desired. This is possibly not that surprising given the
docstring-oriented approach I imagine most developers take with their
own API documentation (in Python and through mostly equivalent
mechanisms in other languages).

Paul



From jstroud at mbi.ucla.edu  Thu Sep 21 04:39:42 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 08:39:42 GMT
Subject: Evaluation of Truth Curiosity
Message-ID: <idsQg.2435$TV3.522@newssvr21.news.prodigy.com>

Hello All,

I'm curious, in

py> 0 | (1 == 1)
1
py> False | (1 == 1)
True

What is the logic of the former expression not evaluating to True (or 
why the latter not 1?)? Is there some logic that necessitates the first 
operand's dictating the result of the evaluation? Or is this an artefact 
of the CPython implementation?

James


From swell at netcourrier.com  Tue Sep 19 13:05:46 2006
From: swell at netcourrier.com (swell at netcourrier.com)
Date: 19 Sep 2006 10:05:46 -0700
Subject: Tkinter and ActiveX event
Message-ID: <1158685546.070270.177110@h48g2000cwc.googlegroups.com>

Hi,
  I want to integrate into an GUI a activeX component that generate
some events.
What i have done is :
  - Create the activeX component ( DispatchWithEvents method )
  - create the GUI
  - app.mainloop()

My pb is that i don't know how to take into account the events
generated by the activeX component into my Tk app main loop to update
the GUI for ex. Can someone spot me an example or give some clues?

Thx
Manu



From metaperl at gmail.com  Thu Sep  7 19:37:17 2006
From: metaperl at gmail.com (metaperl)
Date: 7 Sep 2006 16:37:17 -0700
Subject: the first arg to super() must be a type, not a class obj?
Message-ID: <1157672237.539892.225500@h48g2000cwc.googlegroups.com>

On p.282 of "Python Cookbook" and in the Python docs on calling super:
http://www.python.org/download/releases/2.2.3/descrintro/#cooperation

it is clear that the first argument to super is a class and not a type.
However, for the code below, I am getting an error when attempting to
provide a class as my first argument and don't understand why. Also,
since this is my first attempt at writing anything of any seriousness
in Python, any other feedback is welcome.

from ftputil import *
import re

from urlparse import urlparse

class ftputilx(FTPHost):
    parms = {
        'user': '',
        'pass': '',
        'site': '',
        'path': '',
        'file': '',
        'action': '',
        'lcd': '',
        'autogo': True,
        'debuglevel': 0,
        'type': 'b'
        }

    def bindparms(self, **kwargs):
        for k, v in kwargs.items():
            self.parms[k] = v

    def __init__(self, url, **kwargs):
        _s, site, self.parms['path'], _p, _q, _f = urlparse(url)
        if '@' in site:
            rxs = r'(.+):(.+)@(.+)'
            rxc = re.compile(rxs)
            rxm = rxc.match(site)
            (kwargs['user'],kwargs['pass'],kwargs['site']) =
rxm.group(1), rxm.group(2), rxm.group(3)
        self.bindparms(**kwargs)
        super(ftputilx, self).__init__()


if __name__ == '__main__':
    ftp =
ftputilx("ftp://anonymous:anonymous at ftp.kernel.org/pub/linux/")
    print ftp.listdir(ftp.curdir)



From grybkin at gmail.com  Wed Sep 13 13:48:01 2006
From: grybkin at gmail.com (Gleb Rybkin)
Date: 13 Sep 2006 10:48:01 -0700
Subject: page contents are not refreshed
Message-ID: <1158169681.776776.93090@e3g2000cwe.googlegroups.com>

when running apache, mod_python in windows.

This looks pretty strange. Creating a simple python file that shows
current time will correctly display the time in apache the first time,
but freezes afterwards and shows the same time on all subsequent clicks
as long as the file is not modified.

Any ideas what's wrong? Thanks.

from mod_python import apache
from time import strftime, gmtime

curtime = strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())
def handler(req):
     req.content_type = "text/plain"
     req.send_http_header()
     req.write(str(curtime))
     return apache.OK



From jaysherby at gmail.com  Wed Sep 13 23:54:17 2006
From: jaysherby at gmail.com (Jay)
Date: 13 Sep 2006 20:54:17 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <mailman.48.1158174903.10491.python-list@python.org>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
Message-ID: <1158206057.688002.144980@i42g2000cwa.googlegroups.com>

I, too, am a hardcore fan of jEdit.  It's nice to finally see some user
support on this forum.  :-)


Wildemar Wildenburger wrote:
> stu wrote:
> > jedit
> >
> > http://www.jedit.org/
>
> Finally! I usually try to stay out of these discussions; yet I'm always
> disappointed at how few people seem to be using jEdit and how long it
> takes them to come out of their holes.
> 
> So let me enforce that:
> 
> jEdit
> www.jedit.org
> 
> wildemar



From antroy at gmail.com  Fri Sep 15 05:08:27 2006
From: antroy at gmail.com (Ant)
Date: 15 Sep 2006 02:08:27 -0700
Subject: RELEASED Python 2.5 (release candidate 2)
In-Reply-To: <eeddao$ukm$1@news.albasani.net>
References: <mailman.19.1158149124.10491.python-list@python.org>
	<1158158585.959817.189160@e3g2000cwe.googlegroups.com>
	<eedch4$srs$2@news.albasani.net> <eeddao$ukm$1@news.albasani.net>
Message-ID: <1158311307.139256.108160@e3g2000cwe.googlegroups.com>


Georg Brandl wrote:
> Georg Brandl wrote:
...
> > Please open a bug in the tracker at http://www.sf.net/projects/python.
> 
> Wait, don't bother - just fixed it myself.

Nice one, cheers!



From gdamjan at gmail.com  Sun Sep 17 17:10:35 2006
From: gdamjan at gmail.com (Damjan)
Date: Sun, 17 Sep 2006 23:10:35 +0200
Subject: CONSTRUCT - Adding Functionality to the Overall System
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
	<eek75d$otr$1@news.albasani.net>
Message-ID: <450db942$0$75035$14726298@news.sunsite.dk>


>> I understand that I can use __metaclass__ to create a class which
>> modifies the behaviour of another class.
>> 
>> How can I add this metaclass to *all* classes in the system?
>> 
>> (In ruby I would alter the "Class" class)
> 
> You'd have to set
> 
> __metaclass__ = whatever
> 
> at the top of each module whose classes are to get the new behavior.

I think '__metaclass__ = whatever' affects only the creation of classes that
would otherwise be old-style classes?
 
> You can't alter classes which you don't control or create in your code.

I remeber I've seen an implementation of import_with_metaclass somewhere on
IBM's developerworks. I didn't quite undersntad it though.



-- 
damjan


From fredrik at pythonware.com  Sun Sep 24 04:48:54 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 24 Sep 2006 10:48:54 +0200
Subject: A critique of cgi.escape
In-Reply-To: <slrnehbra1.kpr.jon+usenet@snowy.squish.net>
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
Message-ID: <ef5gpm$c9n$1@sea.gmane.org>

Jon Ribbens wrote:

> Making cgi.escape always escape the '"' character would not break
> anything, and would probably fix a few bugs in existing code. Yes,
> those bugs are not cgi.escape's fault, but that's no reason not to
> be helpful. It's a minor improvement with no downside.

the "improvement with no downside" would bloat down the output for 
everyone who's using the function in the intended way, and will also 
break unit tests.

 > One thing that is flat-out wrong, by the way, is that cgi.escape()
 > does not encode the apostrophe (') character.

it's intentional, of course: you're supposed to use " if you're using 
cgi.escape(s, True) to escape attributes.  again, punishing people who 
actually read the docs and understand them is not a very good way to 
maintain software.

btw, you're both missing that cgi.escape isn't good enough for general 
use anyway, since it doesn't deal with encodings at all.  if you want a 
general purpose function that can be used for everything that can be put 
in an HTML file, you need more than just a modified cgi.escape.  feel 
free to propose a general-purpose replacement (which should have a new 
name), but make sure you think through *all* the issues before you do that.

</F>



From http  Wed Sep  6 03:28:07 2006
From: http (Paul Rubin)
Date: 06 Sep 2006 00:28:07 -0700
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
	<hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
	<1157476298.716537.109330@h48g2000cwc.googlegroups.com>
	<7xbqptybeb.fsf@ruckus.brouhaha.com>
	<1157526837.499442.227670@m79g2000cwm.googlegroups.com>
Message-ID: <7xejup314o.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> You can, absolutely.  If you're sharing memory through mmap it's
> usually the preferred solution; fcntl locks ranges of an open file, so
> you lock exactly the portions of the mmap that you're using at a given
> time.

How can it do that without having to touch the PTE for every single
page in the range, which might be gigabytes?  For that matter, how can
it do that on regions smaller than a page?  And how does another
process query whether a region is locked, without taking a kernel trap
if it's locked?  This sounds absolutely horrendous compared to a
futex, which should usually be just one or two user-mode instructions
and no context switches.

> It's not an unusual use at all, Unix programs have used file locks in
> this manner for upwards of a decade--things like the Apache public
> runtime use fcntl or flock for interprocess mutexes, and they're quite
> efficient.  (The futexes you mentioned are a very recent Linux
> innovation).

Apache doesn't use shared memory in the same way that something like a
database does, so maybe it can more easily tolerate the overhead of
fcntl.  Futex is just a somewhat standardized way to do what
programmers have done less portably since the dawn of multiprocessors.


From mynews44 at yahoo.com  Sun Sep 17 06:39:20 2006
From: mynews44 at yahoo.com (googleboy)
Date: 17 Sep 2006 03:39:20 -0700
Subject: How would you go about creating a heap of shortcuts to a batch file?
Message-ID: <1158489560.441828.111920@m73g2000cwd.googlegroups.com>

I need to create about 2000 shortcuts to a batch file.  The shortcuts
need to have:

Name: %parameter%.lnk

Target: n:\Path\To\batchfile.bat %parameter%
Start In: n:\Path\To\


Where the parameter is filled in by reading in a file with all the
shortcut names.


Extra bonus points for being able to apply the icon for an application
at n:\path\to\application\app.exe

At the moment I am looking like having to do this with VB,  but I am
trying hard to leave that behind for evermore.

TIA

googleboy



From onurb at xiludom.gro  Thu Sep 28 11:24:54 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 17:24:54 +0200
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <mailman.878.1159449832.10491.python-list@python.org>
References: <mailman.1984.1159445104.10490.python-list@python.org>
	<mailman.878.1159449832.10491.python-list@python.org>
Message-ID: <451be947$0$25524$626a54ce@news.free.fr>

Brendon Towle wrote:
> On 28 Sep 2006, at 8:05 AM, python-list-request at python.org wrote:
> 
>> From: Bruno Desthuilliers <onurb at xiludom.gro>
>>
>> Brendon Towle wrote:
>>> Some of your Lisp translations are subtly off...
>>
>> Seems correct to me. Lisp lists are linked lists, not arrays.
>>
>>>
>>>> From: "sturlamolden" <sturlamolden at yahoo.no>
>>>>
>>>> If you want to make a chained structure, then perhaps you know LISP?
>>>> This is what the basic machinery of LISP looks like in Python:
>>>>
>>>> def cons(a,b)
>>>>    return [a,b]
>>>
>>> should be:
>>>     return [a].extend(b)
>>
>> A Lisp cons is made of a reference to it's content and a reference to
>> the rest of the list, so cons = lambda a, b : [a, b] seems the most
>> straightforward translation.
> 
> Yes, a lisp cons is a pair of references as you describe. However, the
> following lisp call:
> 
> ? (cons <item> <list>)
> 
> returns a single level list, 

returns a "single level" *Lisp* list - ie, a linked list.

> with <item> as its new first item, and the
> original contents of <list> as the remainder of the list. The OP's code
> doesn't do that; it returns a list of two items, with <list> as the
> second item.

It returns a structure made of a reference to the new item and a
reference to the original list. Which is exactly what Lisp's cons does
AFAIK.

> To put it another way, the following code is always true in Lisp:
> 
> ? (= (length (cons <item> <list>)) (1+ (length <list>)))
> 
> But the OP's code only allows that to be true when <list> is of length 1.

Not if you're writing the appropriate length function:

def length(linkedlist):
  return cdr(linkedlist) and  1 + length(cdr(linkedlist)) or 1

You obviously can't use the Python builtin len() here.

> 
> I suppose, of course, that you could claim that the following Lisp list:
> 
>   (1 2 3 4)
> 
> should translate into the following Python list:
> 
>   [1, [2, [3, [4]]]]

Should actually be
[1, [2, [3, [4, []]]]]

The internal representation of a Lisp list is really (1 (2 (3 (4 ())))),
not (1 2 3 4).

If it's the fact the proposed translation uses Python lists internally
that bother you, you could also implement it with a more heavyweight
solution:

class cons(object):
  def __init__(self, car, cdr=None):
    self.car = car
    self.cdr = cdr
  def __repr__(self):
    return "<cons %s %s>" % (self.car, self.cdr)

def llist(*args):
    alist = None
    for item in reversed(args):
        alist = cons(item, alist)
        print alist
    return alist

def cdr(acons):
  return acons.cdr

def car(acons):
  return acons.car

def length(llist):
  if cdr(llist) is None:
    return 1
  return 1 + length(cdr(llist))


> But, I think that's a bit silly.

It's *of course* a bit silly[1] - Python is not Lisp. But it's a clear
illustration of the difference between Python lists and Lisp lists !-)

[1] OTHO, using this with tuples may be (or may have been) a more
efficient implementation for stacks than plain Python lists, cf Mark
Lutz, "Programming Python", 2nd edition.

> 
>>>> def car(structure)
>>>>    return structure[0]
>>>>
>>>> def cdr(structure)
>>>>    return structure[1]
>>>
>>> should be:
>>>     return structure[1:]
>>
>> idem.
> 
> I should have pointed out, of course, that the original definition of
> CDR was correct given the original (incorrect) definition of cons.

The original definition of cons() was by no mean "incorrect".

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From jon+usenet at unequivocal.co.uk  Mon Sep 25 20:00:54 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 26 Sep 2006 00:00:54 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
Message-ID: <slrnehgrdc.loa.jon+usenet@snowy.squish.net>

In article <ef9nib$snj$1 at lust.ihug.co.nz>, Lawrence D'Oliveiro wrote:
> You're proposing two separate functions:
> 
>     1) quoting of non-wildcard specials
>     2) quoting of wildcard specials

Lawrence, you're wrong in this thread for the same reason you were
right in the cgi.escape thread. Escaping general characters for string
literals is a different operation from escaping wildcards from pattern
matches, and for a good reason.


From onurb at xiludom.gro  Fri Sep 15 06:20:12 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 15 Sep 2006 12:20:12 +0200
Subject: add without carry
In-Reply-To: <YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
	<1158311964.932017.186470@i3g2000cwc.googlegroups.com>
	<1158312804.852104.204850@i42g2000cwa.googlegroups.com>
	<YKuOg.1159$vJ2.553@newssvr12.news.prodigy.com>
Message-ID: <450a7e5c$0$14661$626a54ce@news.free.fr>

Bryan Olson wrote:
> Hugh wrote:
>> Sorry, here's an example...
>>
>> 5+7=12
>>
>> added without carrying, 5+7=2
>>
>> i.e the result is always less than 10
> 
> Are you looking for bitwise exclusive or? In Python it's
> the '^' operator. For example:
> 
>     print 5 ^ 7
> 
> 
>>> 10 ^ 21
31

Not really "less than 10"...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From duncan.booth at invalid.invalid  Tue Sep  5 07:31:30 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 5 Sep 2006 11:31:30 GMT
Subject: why have to "from compiler import *"
References: <1157431202.681992.287340@i42g2000cwa.googlegroups.com>
	<1157453946.756864.231500@m79g2000cwm.googlegroups.com>
Message-ID: <Xns98357F6C378A0duncanbooth@127.0.0.1>

"Paddy" <paddy3118 at netscape.net> wrote:

> 
>  import module1
>  # namespace becomes:
>    \-------------------------/
>   |module1.moduleFunc1     |
>   |module1.moduleClass1:   |
>   |  class1Method1         |
>   |  class1Method2         |
>   |module1.moduleFunc2     |
>   |module1.moduleVar1      |
>   |module1.moduleVar2      |
>    /------------------------\

It would be more accurate to say:
 # namespace becomes
   \-----------------/
   |module1          |
   |                 |
   /-----------------\


From sjmachin at lexicon.net  Mon Sep 11 19:01:40 2006
From: sjmachin at lexicon.net (John Machin)
Date: 11 Sep 2006 16:01:40 -0700
Subject: Algorithm Question
In-Reply-To: <ee44nl$8r$1$830fa79d@news.demon.co.uk>
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
	<ee44nl$8r$1$830fa79d@news.demon.co.uk>
Message-ID: <1158015700.817709.253180@h48g2000cwc.googlegroups.com>


Andrew McLean wrote:
> Carl Banks wrote:
> > Andrew McLean wrote:
> >> I have a list of strings, A. I want to find a set of strings B such that
> >> for any "a in A" there exists "b in B" such that b is a sub-string of a.
> >
> > B=A?
> >
> >> But I also want to minimise T = sum_j t_j where
> >> t_j = count of the number of elements in A which have b[j] as a sub-string
> >
> > If there not elements in A that are substrings of any other element in
> > A, and if B=A, then t_j would be 1 for all j.  Which means B=A would be
> > optimal (since elements of B have to be substring of at least one
> > element in A).  It looks like the B={set of all elements in A that are
> > not a substring of any other element in A} is the generally optimal
> > solution.
> >
> > I suspect you mistyped or omitted something--problem is underspecified
> > at best.
>
> You are quite right. I was trying to generalise my real problem and
> missed out a constraint. I also want to keep length(B) small.
> Unfortunately, I'm a bit unsure about the relative importance of T and
> length(B), which makes the problem rather ill defined. I'll have to give
> this a bit more thought....

A quick silly question: what is the problem that you are trying to
solve?



From roy at panix.com  Mon Sep 25 08:57:53 2006
From: roy at panix.com (Roy Smith)
Date: Mon, 25 Sep 2006 08:57:53 -0400
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
	<1159187290.052703.116370@i42g2000cwa.googlegroups.com>
Message-ID: <roy-B0D639.08575325092006@reader2.panix.com>

In article <1159187290.052703.116370 at i42g2000cwa.googlegroups.com>,
 rdsteph at mac.com wrote:

> 5. Number of job listings on internet job listing boards.

I just did a quick survey for Perl and Python jobs on some of the big IT 
job boards.  I came up with:

Site          Perl      Python
Hotjobs       2756       655
Monster      >1000       317
Dice          4828       803

I'm not sure how I'm going to spin that to a marketing guy to make him 
think that "by many (most?) measurements, Python is now more widely used 
than Perl for many types of applications"

Has somebody done a historical analysis of job listing growth over the past 
few years?  If there was a graph showing the lines cross in N years, that 
would be more impressive.


From edreamleo at charter.net  Tue Sep 19 11:10:21 2006
From: edreamleo at charter.net (Edward K. Ream)
Date: Tue, 19 Sep 2006 10:10:21 -0500
Subject: newlines and sax.saxutils.quoteattr
Message-ID: <JLTPg.347$2N.307@newsfe02.lga>

Hello all,

I recently ran across a situation in which sax.saxutils.quoteattr did not 
work as I expected.  I am writing Leo outlines as opml files
http://en.wikipedia.org/wiki/OPML
which forces me to write python code in xml attributes rather than xml 
elements (as is done in .leo files).

The problem is that the sax parser I am using ignores newlines in 
attributes.  After reading the thread at:

http://mail.python.org/pipermail/python-list/2006-March/332307.html

I was able to work around the problem by converting newlines to '&#10;\n'. 
This makes the opml file as readable as possible (since the attributes 
contains newlines in addition to the character reference &#10;  In addition, 
the sax parser seems happy.

My questions:

- Does anyone know whether this is guaranteed to be a general solution? That 
is, are sax parsers *obliged* to ignore newlines in attributes?

- If sax parsers are indeed obliged to ignore newlines in attributes, would 
it be a good idea to (optionally?) have sax.saxutils.quoteattr perform the 
substitution of newlines to '&#10;\n' ?

Thanks.

Edward
--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From sebastien.thur at laposte.net  Fri Sep 22 04:07:41 2006
From: sebastien.thur at laposte.net (seb)
Date: 22 Sep 2006 01:07:41 -0700
Subject: what is the best practice to separate Pygtk and long running thread
	code
Message-ID: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>

Hi,

I am using pygtk for the first times.

I am wondering what would be the best "pattern" to interface pygtk with
a thread.

The thread is collecting informations (over the network for example) or
is doing some long calculations.

I would like also to separate the gui part to the action part so that I
should be easier to maintain.

************************************************************
What should be the best practice in order to achieve this ?
***********************************************************

What I use now is :



1)
the gui is launching the "action" evrey 1 sec and is checking for
message using a queue every second also.

gui.py

....etc ...
class window1(SimpleGladeApp):
#@-- class window1 }
    #@-- init window1.__init__ {
    def __init__(self, path='gui.glade',
                 root='window1',
                 domain=app_name, kwargs={}):
        path = os.path.join(glade_dir, path)
        SimpleGladeApp.__init__(self, path, root, domain, **kwargs)
	self.q=Queue.Queue()
	self.action=act.action(self.q)
        gobject.timeout_add (1000,self.action.go) # this is the action
asked
	gobject.timeout_add (1000,self.process) # check if a new message is
available in the queue

    def process (self):
	dir (self.q)
        if self.q.empty() == False :
        	print "from main ",self.q.get()
	return True

 ...etc ....

2)
The action part is making somehow the interface between the running
thread and the gui :
It puts the new information in the queue for the gui to process it
later.


action.py

import os
import gui
import time
import Queue
import Spethread # thread that always run in the background

class Singleton(object):
    _instance = None
    def __new__(cls, *args, **kwargs):
        if not cls._instance:
            cls._instance = super(Singleton, cls).__new__(cls, *args,
**kwargs)
        return cls._instance


class action(Singleton):
    def __init__(self, queue):
        self.q=queue
	self.thread_seb=Spethread.worker()
	self.thread_seb.start()
	self.go()

    def go(self):
        if self.thread_seb:
            reponse=self.thread_seb.status()
	    self.q.put(reponse)
	else :
            self.q.put("le thread n'existe plus ")
        return True

    def stop(self):
        self.thread_seb.die()


3)
The thread part is "just" a thread that should from time to time
time.Sleep in order for action to query if it has some new messages.

Spethread.py

import threading
import time

class worker(threading.Thread):

	def __init__(self):
		threading.Thread.__init__(self)
		self.value=0
		self.go_on=1

	def run(self):
		print "self.go_on=",self.go_on
		while self.go_on == 1:
			self.value=int(time.time())
			res=2
			for i in range(0, 100):
				res=res^i
				print res
			time.Sleep(0.01)
	def status(self):
		return self.value


	def die(self):
		print "die request"
		self.go_on=0


Thanks in advance for sharing this informations.
Sebastien.

PS :
the entire gui.py

gH#@-- python gui.py {
#@-- header gui.py {
#!/usr/bin/env python
# -*- coding: UTF8 -*-

# Python module gui.py
# Autogenerated from gui.glade
# Generated on Wed Sep 20 22:03:00 2006

# Warning: Do not modify any context comment beginning with # @--
# They are required to keep user's code
# Doing so will make it unable for kefir to help you further manage
your project

#@-- header gui.py }
#@-- app gui {
import os
import gobject
import gtk
import action as act
import Queue

from SimpleGladeApp import SimpleGladeApp, bindtextdomain

app_name = 'gui'
app_version = '0.0.1'

glade_dir = ''
locale_dir = ''

bindtextdomain(app_name, locale_dir)

#@-- app gui }
#@-- window window1 {
#@-- class window1 {
class window1(SimpleGladeApp):
#@-- class window1 }
    #@-- init window1.__init__ {
    def __init__(self, path='gui.glade',
                 root='window1',
                 domain=app_name, kwargs={}):
        path = os.path.join(glade_dir, path)
        SimpleGladeApp.__init__(self, path, root, domain, **kwargs)
	self.q=Queue.Queue()
	self.action=act.action(self.q)
        gobject.timeout_add (1000,self.action.go)
	gobject.timeout_add (1000,self.process)
    #@-- init window1.__init__ }
    #@-- new window1.new {
    def new(self):
        print 'A new %s has been created' % self.__class__.__name__
    #@-- new window1.new }
    #@-- custom window1 {
    #   Write your own methods here
    #@-- custom window1 }
    #@-- callback window1.on_button1_clicked {
    def on_button1_clicked(self, widget, args=[]):
        print 'on_button1_clicked called with self.%s' %
widget.get_name()
        self.action.stop()
        print "arrete de thread"
    #@-- callback window1.on_button1_clicked }
    def process (self):
	dir (self.q)
        if self.q.empty() == False :
        	print "from main ",self.q.get()
	return True

#@-- window window1 }
#@-- main gui.py {
#@-- init main {
def main():
#@-- init main }
#@-- body main {
    Window1 = window1()
    Window1.run()
#@-- body main }
#@-- main gui.py }
#@-- run gui.py {
if __name__ == '__main__':
    main()
#@-- run gui.py }
#@-- python gui.py }



the glade file:


<?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM
"http://glade.gnome.org/glade-2.0.dtd">

<glade-interface>

<widget class="GtkWindow" id="window1">
  <property name="visible">True</property>
  <property name="title" translatable="yes">window1</property>
  <property name="type">GTK_WINDOW_TOPLEVEL</property>
  <property name="window_position">GTK_WIN_POS_NONE</property>
  <property name="modal">False</property>
  <property name="resizable">True</property>
  <property name="destroy_with_parent">False</property>
  <property name="decorated">True</property>
  <property name="skip_taskbar_hint">False</property>
  <property name="skip_pager_hint">False</property>
  <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
  <property name="focus_on_map">True</property>
  <property name="urgency_hint">False</property>

  <child>
    <widget class="GtkVBox" id="vbox1">
      <property name="visible">True</property>
      <property name="homogeneous">False</property>
      <property name="spacing">0</property>

      <child>
	<widget class="GtkEntry" id="entry1">
	  <property name="visible">True</property>
	  <property name="can_focus">True</property>
	  <property name="editable">True</property>
	  <property name="visibility">True</property>
	  <property name="max_length">0</property>
	  <property name="text" translatable="yes">this is it</property>
	  <property name="has_frame">True</property>
	  <property name="invisible_char">*</property>
	  <property name="activates_default">False</property>
	</widget>
	<packing>
	  <property name="padding">0</property>
	  <property name="expand">True</property>
	  <property name="fill">True</property>
	</packing>
      </child>

      <child>
	<widget class="GtkButton" id="button1">
	  <property name="visible">True</property>
	  <property name="can_focus">True</property>
	  <property name="label" translatable="yes">button1</property>
	  <property name="use_underline">True</property>
	  <property name="relief">GTK_RELIEF_NORMAL</property>
	  <property name="focus_on_click">True</property>
	  <signal name="clicked" handler="on_button1_clicked"
last_modification_time="Wed, 20 Sep 2006 19:59:06 GMT"/>
	</widget>
	<packing>
	  <property name="padding">0</property>
	  <property name="expand">False</property>
	  <property name="fill">False</property>
	  <property name="pack_type">GTK_PACK_END</property>
	</packing>
      </child>
    </widget>
  </child>
</widget>

</glade-interface>



From tim.peters at gmail.com  Tue Sep 12 23:09:00 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 12 Sep 2006 23:09:00 -0400
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <ECINg.1207$IA.290@newssvr11.news.prodigy.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
	<mailman.320.1158045174.5279.python-list@python.org>
	<ECINg.1207$IA.290@newssvr11.news.prodigy.com>
Message-ID: <1f7befae0609122009jb77bb8cra7eb8358ff0874bf@mail.gmail.com>

[Bryan Olson]
>>> Unfortunately, the stuff about NFA's is wrong. Friedl's awful
>>> book

[Tim Peters]
>> Strongly disagree: [...]

[Bryan]
> I know I'm disagreeing with a lot of smart people in panning
> the book.

That's allowed :-)

>>> What Python uses is search-and-backtrack. Unfortunately such
>>> engines don't have much theory behind them, and it's hard to
>>> reason generally about what they do.

>> Yup X 3, and the last is precisely why Friedl's book is valuable for
>> people using "NFA" implementations:  Friedl does a good job of
>> explaining when and why you're likely to trigger atrocious runtime
>> performance, and gives practical general techniques for avoiding those
>> problems.  None of that has anything to do with CompSci regexps
>> either, but is vital knowledge for people hoping to make happy
>> non-trivial use of Python/Perl/etc regexps.

> I read the first edition, minus some engine-specific stuff.
> General techniques are what I want, and I didn't see them in the
> book. He had things to do and not do, but it didn't add up to
> building (ir-)regular expressions with reliably tractable
> behavior.

My guess then is that the book moved at too slow a pace for you, and
you got bored.  The most valuable general technique he (eventually ;-)
explained he called "unrolling", and consists of writing a regexp in
the form:

    normal* (?: special normal* )*

where the sets of characters with which `normal` and `special` can
start are disjoint.  Under most "NFA" implementation, such a regexp is
immune to most bad behaviors, whether finding very long matches, or in
searching a very long string that happens not to contain any matches.

Without knowing this, under many implementations it's very easy to end
up writing a regexp that matches quickly when a short match exists,
but "blows up" (stack fault, or some checked internal limit hit) if
only a very long match exists; and/or takes even exponential time to
fail to match when a match doesn't exist.

For example, a direct application is writing a robust regular
expression to match C string literals (also one form of Python string
literal:  double-quote character at each end, and backslash escapes,
including backslash-newline to span lines):

    " [^"\\\n]* (?: \\[\x00-\xff] [^"\\\n]* )* "

The "normal case" is that it's just a regular old character:  not a
double quote, backslash, or newline.  The "special case" is a
backslash followed by any character whatsoever.  The "normal" and
"special" cases obviously don't intersect, so the interior of this
regexp (i.e., ignoring the double quotes at each end)  fits the
"unrolling" pattern to a tee.

As a result, you can use it with reasonably high confidence.  For
/why/ that's so, read the rest of his book ;-)  In effect, it gives
the search engine only one possible course of action at each character
in the target string.  So long as that's "normal", it has to stay in
the "normal" part of the regexp, and as soon as it's "special" it has
to leave the "normal" part.  The intent is to eliminate any
possibility for backtracking, thus ensuring predictable runtime and
ensuring that no form of internal backtracking stack needs to be used
(let alone hit its limit).

The unrolling idea was new to me, and as soon as I learned it I
replaced lots of regexps in the Python library with rewritten versions
that demonstrably performed very much better -- even allowed closing
some bug reports concerning extreme cases (extremely long matches, and
unbearable runtime on long strings without any matches).

A different lesson to take from this is that nobody is likely to
stumble into effective "NFA" techniques based on luck or "common
sense".  It's a set of obscure & specialized learned skills.


From onurb at xiludom.gro  Thu Sep 14 06:37:09 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 14 Sep 2006 12:37:09 +0200
Subject: how are dictionary literals handled by the interpreter?
In-Reply-To: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
References: <1158173651.147229.182260@b28g2000cwb.googlegroups.com>
Message-ID: <450930d6$0$22499$626a54ce@news.free.fr>

akameswaran at gmail.com wrote:
> I wrote up a quick little set of tests, I was acutally comparing ways
> of doing "case" behavior just to get some performance information.  Now
> two of my test cases had almost identical results which was not at all
> what I expected.  Ultimately I realized I don't really know how
> literals are treated within the interpreter.
> 
> The two implementations I was looking at were:
> 
> class caseFunction(object):
>     def __init__(self):
>         self.caseDict = {'a':"retval = 'a'",
> 'b':"retval='b'","c":"retval='c'","d":"retval='d'",
> 
> "e":"retval='e'","f":"retval='f'","g":"retval='g'","h":"retval='h'",
>                          "i":"retval='i'"}
> 
>     def doIt(self,a):
>         exec(self.caseDict.get(a))
>         return retval

Err...  Why would you want to exec anything here ? Remember that
Python's functions are objects too:

def funcA(*args, **kw):
  return "funcA called with %s %s" % (str(args), kw)

def funcB(*args, **kw):
  return "funcB called with %s %s" % (str(args), kw)

def funcC(*args, **kw):
  return "funcC called with %s %s" % (str(args), kw)

def defaultFunc(*args, **kw):
  return "defaultFunc called with %s %s" % (str(args), kw)

class SwitchFunc(object):
  def __init__(self, default, **kw):
    self._default = default
    self._switch = kw

  # makes the object callable.
  def __call__(self, case, *args, **kw):
    func = self._switch.get(case, self._default)
    return func(*args, **kw)

switch = SwitchFunc(defaultFunc, a=funcA, b=funcB, c=funcC)

for case in "abcX":
  print switch(case, "foo", q=42)

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From python.list at tim.thechases.com  Fri Sep 29 15:25:14 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 29 Sep 2006 14:25:14 -0500
Subject: retry in exception
In-Reply-To: <1159555060.721235.119530@b28g2000cwb.googlegroups.com>
References: <451d4294$1@news.vo.lu>	<slrnehqhto.ib7.sybrenUSE@schuimige.stuvel.eu>
	<1159555060.721235.119530@b28g2000cwb.googlegroups.com>
Message-ID: <451D731A.4020908@tim.thechases.com>

> In ruby, the equivalent to try...except is begin...rescue. In the
> rescue section you can ask it to retry the begin section. So, for
> example:
> 
> b=0
> begin
>   puts 1/b
> rescue
>   b=1
>   retry # <- this little guy
> end


Well, it's all a matter of how you look at it.  I personally 
prefer to see that there's some sort of looping going on. 
Something crazy like this contrived example, it would be best to 
just check to see if b==0 beforehand.  However, for the sake of 
example, one could do something like

b = 0

for d in [b, 1]:
	try:
		print 1/d
		break
	except ZeroDivisionError:
		pass


which would allow you to have a number of things to try...to give 
a little more plausibility to the idea, the original ruby might 
have been something like (forgive my ignorance of ruby syntax)

url = 'http://www.example.com'
begin
   get_webpage(url)
rescue
   url = 'http://www2.example.com'
   retry
end


which would try a backup server if the main one is down.  The 
above python variant would allow an arbitrary number of servers 
to be listed

servers = ['http://www%i.example.com' % i for i in xrange(1,5)]
for server in servers:
	try:
		u = urllib.urlopen(server)
		break
	except IOError:
		pass
else:
	raise NoAvailableServersException()

This comes full-circle on another thread asking about the use of 
"else:" after a for/while loop...yes, nice to have.

The above python code will try to open each of the servers in 
turn until it gets one that it can open.  If it can't open any of 
them, it raises some concocted NoAvailableServersException.  To 
get the above to succeed, you can add

servers[3] = 'http://www.example.com'

which will actually exist, and thus will fall out of the loop 
with "u" successfully set to the connection from which you can read.

I have to agree with Diez, that this sounds like some 
ambiguous/dangerous behaviour could ensue from such a language 
construct.  I'd just as soon specify my desired behavior explicitly.

Just a few ideas.

-tkc






From mail at microcorp.co.za  Wed Sep 27 01:59:53 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Wed, 27 Sep 2006 07:59:53 +0200
Subject: Contender for QOTW - Was : Re: AN Intorduction to Tkinter
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com><mailman.744.1159305439.10491.python-list@python.org><1159308273.158474.253230@m7g2000cwm.googlegroups.com><1159315897.885088.302950@m7g2000cwm.googlegroups.com>
	<1159316811.481250.321780@e3g2000cwe.googlegroups.com>
Message-ID: <000201c6e1fb$8103f940$03000080@hendrik>

 "John Machin" <sjmachin at lexicon.net> wrote:

<snip>

> In that case, don't burn bandwith by banal banter, post the examples!

 
+1 here - Hendrik 



From martin at v.loewis.de  Tue Sep 26 01:19:24 2006
From: martin at v.loewis.de (=?ISO-8859-15?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 26 Sep 2006 07:19:24 +0200
Subject: Python extensions on Win32
In-Reply-To: <mailman.615.1159242697.10491.python-list@python.org>
References: <mailman.615.1159242697.10491.python-list@python.org>
Message-ID: <4518b85d$0$19215$9b622d9e@news.freenet.de>

Cliff Wells schrieb:
> 1) Is VC++ 2005 compatible with VC++ 2003?  

No. If you know very well how the extension module is written,
and what precisely the incompatibilities are, you may get away
with linking to msvcr8.dll, anyway.

> If not, how can someone
> acquire VC++ 2003 (aside from thepiratebay.org)?  The Microsoft site
> seems to be a dead end here unless you've put out for a spendy MSDN
> subscription.

As you say, getting it from MSDN is one option; another is to get
a used copy from Ebay. There used to be a free (as in beer) version
of the compiler binaries; some people use that.

> 2) If it is compatible, is there some specific incantation needed (env
> variables, etc) to make pycurl use it?

If you set the environment variables MSSdk and DISTUTILS_USE_SDK,
the distutils will use the compiler "cl.exe" in the PATH, regardless
of whether the resulting binary would work.

> 3) If this is a dead-end, will mingw32 work instead (the error message
> from pycurl implies it might, but I have doubts)?  Or will this only
> work with the cygwin version of Python?

No, the mingw binaries work fine with the pydotorg binaries of Python
2.5.

> 4) How much alcohol will be required to forget all this when I'm done?

You shouldn't forget it. Instead, you should write your experience
into "the Web", so that others have a flatter learning curve.

Regards,
Martin


From miki.tebeka at gmail.com  Tue Sep 12 02:30:35 2006
From: miki.tebeka at gmail.com (Miki)
Date: 11 Sep 2006 23:30:35 -0700
Subject: How to get the package, file,
	and line of a method/function invocant?
In-Reply-To: <1hliuk8.1fnsui6u87m34N%aleax@mac.com>
References: <1158038477.221439.15260@e63g2000cwd.googlegroups.com>
	<1hliuk8.1fnsui6u87m34N%aleax@mac.com>
Message-ID: <1158042635.158081.110760@i3g2000cwc.googlegroups.com>

> > I am looking for something like the caller() routine in Perl:
> >    http://perldoc.perl.org/functions/caller.html
>
> Look at the inspect module in Python's standard library.
Or is you're feeling lazy, have a look at the "here" function found in
http://www.unixreview.com/documents/s=9133/ur0404e/ur0404e_listing1.htm

--
Miki
http://pythonwise.blogspot.com



From yohell at ifm.liu.se  Fri Sep  1 10:31:53 2006
From: yohell at ifm.liu.se (Joel Hedlund)
Date: Fri, 01 Sep 2006 16:31:53 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <44f81592$0$6993$626a54ce@news.free.fr>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
	<ed91hj$hdo$1@news.lysator.liu.se>
	<44f81592$0$6993$626a54ce@news.free.fr>
Message-ID: <ed9g10$kt2$1@news.lysator.liu.se>

> I still wait for a
> proof that it leads to more robust programs - FWIW, MVHO is that it
> usually leads to more complex - hence potentially less robust - code.

MVHO? I assume you are not talking about Miami Valley Housing Opportunities 
here, but bloat probably leads to bugs, yes.

> Talking about interfaces, you may want to have a look at PyProtocols
> (PEAK) and Zope3 Interfaces.

Ooh. Neat.

> As long as you provide a usable documentation, misuse of your code is
> not your problem anymore (unless of course you're the one misusing it !-).

But hey, then I'm still just letting idiots suffer from their idiocy, and 
since that's part of our greater plan anyway I guess that's ok :-D

> Then you probably want to read the relevant chapter in DiveIntoPython.

You are completely correct. Thanks for the tip.

Thanks for your help! It's been real useful. Now I'll sleep better at night.

Cheers!
/Joel


From deets at nospam.web.de  Fri Sep 15 09:23:34 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Fri, 15 Sep 2006 15:23:34 +0200
Subject: high level, fast XML package for Python?
References: <1158326455.361129.247990@i3g2000cwc.googlegroups.com>
Message-ID: <4mvnqmF7r4a3U1@uni-berlin.de>

Gleb Rybkin wrote:

> I searched online, but couldn't really find a standard package for
> working with Python and XML -- everybody seems to suggest different
> ones.
> 
> Is there a standard xml package for Python? Preferably high-level, fast
> and that can parse in-file, not in-memory since I  have to deal with
> potentially MBs of data.

cElementTree and lxml (which is API-compatible to the former). cElementTree
has an incremental parser, which allows for lager-than-memory-files to be
processed.

Diez


From anthra.norell at vtxmail.ch  Mon Sep 18 06:33:07 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Mon, 18 Sep 2006 12:33:07 +0200
Subject: How to change font direction?
In-Reply-To: <1158385468.535924.49300@m7g2000cwm.googlegroups.com>
References: <1158357516.297252.282020@i42g2000cwa.googlegroups.com>
	<1158385468.535924.49300@m7g2000cwm.googlegroups.com>
Message-ID: <450E75E3.9020207@vtxmail.ch>

theju wrote:
> Well here are some self explanatory functions that I've written for
> displaying the text vertically and from right to left. As for rotation
> gimme some more time and i'll come back to you. Also I don't guarantee
> that this is the best method(cos I myself am a newbie), but I can
> guarantee you that it works.
> Here it goes...
>
> im=Image.open("imgfile.jpg")
> draw=ImageDraw.Draw(im)
>
> def verdraw(width,height,spacing,a="Defaulttext"):
> 	for i in range(0,len(a)):
> 		draw.text((width,height),a[i],(<options>))
> 		height+=spacing
>
> def right2leftdraw(width,height,spacing,a="Defaulttext"):
> 	for i in range(0,len(a)):
> 		draw.text((width,height),a[len(a)-i-1],(<options>))
> 		width += spacing
>
> <options> is a 3 field length tuple is mentioned in the PIL-Handbook.
> Hope you find it useful
> -Theju
>
> Daniel Mark wrote:
>   
>> Hello all:
>>
>> I am using PIL to draw some graphics and I need to draw some texts
>> in vertical direction rather than the default left-to-right horizontal
>> direction.
>>
>> Is there anyway I could do that?
>>
>>
>> Thank you
>> -Daniel
>>     
>
>   

I have done a circular 24-hour dial with the numbers arranged to read 
upright as seen from the center. I remember writing each number into a 
frame, rotating the frame and pasting it into the dial image at the 
right place. I also remember using a transparency mask, so the white 
background of the little frame didn't cover up what it happened to 
overlap (minute marks). The numbers were black on white, so the frame 
was monochrome and could be used as its own transparency mask.
      (This could well be an needlessly complicated approach. When 
confronting a problem, I tend to weigh the estimated time of  hacking 
against the estimated time of shopping and reading recipes and often 
decide for hacking as the faster alternative.)

Regards

Frederic



From sjmachin at lexicon.net  Sun Sep 24 03:31:19 2006
From: sjmachin at lexicon.net (John Machin)
Date: 24 Sep 2006 00:31:19 -0700
Subject: Regular expression confusion
In-Reply-To: <45162BA1.6030604@gmail.com>
References: <ef4mvp$ogs$1@gemini.csx.cam.ac.uk>
	<1159062810.790437.188220@h48g2000cwc.googlegroups.com>
	<45162BA1.6030604@gmail.com>
Message-ID: <1159081323.119776.179380@e3g2000cwe.googlegroups.com>


York wrote:
> Oh, that's right, the second arg is escaped by re compiler too.

No, that's wrong, you [should] do the escaping, the compiler unescapes
:-)

Cheers,
John



From steve at holdenweb.com  Thu Sep  7 12:28:18 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 17:28:18 +0100
Subject: sending emails using python
In-Reply-To: <45003C40.3070805@googlemail.com>
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>	<B51712964.236.7189.1@mx-extra>	<mailman.111.1157617795.5279.python-list@python.org>	<slrnefvuko.o98.sybrenUSE@schuimige.stuvel.eu>	<12g07gf97898rff@corp.supernews.com>	<B51734183.306.7705.3@mx-extra>	<mailman.123.1157638459.5279.python-list@python.org>	<12g0e83gshlds40@corp.supernews.com>
	<45003C40.3070805@googlemail.com>
Message-ID: <edph9q$v7u$1@sea.gmane.org>

Hari Sekhon wrote:
[...]
> 
> BOFH?
> 
Bas**rd Operator From Hell
> lol
> 
Indeed.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From andrew-news at andros.org.uk  Thu Sep 14 20:03:18 2006
From: andrew-news at andros.org.uk (Andrew McLean)
Date: Fri, 15 Sep 2006 01:03:18 +0100
Subject: Are Python's reserved words reserved in places they dont need
	to be?
In-Reply-To: <roy-3A8ECC.23490912092006@reader1.panix.com>
References: <1158072199.681163.212310@p79g2000cwp.googlegroups.com>
	<1hlki4l.hxeyzim53ewmN%aleax@mac.com>
	<1158118298.156680.7500@m73g2000cwd.googlegroups.com>
	<roy-3A8ECC.23490912092006@reader1.panix.com>
Message-ID: <eecqk8$gk$1$8300dec7@news.demon.co.uk>

Roy Smith wrote:
> 
> As I remember, you didn't need the whitespace either. IIRC, your example 
> above could have been written as:
> 
>       PROGRAMKWDS
>       REALREAL,WRITE
>       WRITE=1.0
>       REAL=2.0
>       WRITE(*,*)WRITE,REAL
>       END
> 

It's stranger than that. FORTRAN 77 is insensitive to white space (other 
than inside character literals).

So you could write the code like:

        P  RO  G  RAM KW D                                  S
        RE  ALRE  AL, WRITE
                      WRITE = 1  .  0
        RE  AL=2.0
        WRI TE(*  ,  *)WRI  TE, REAL
        E             N               D

if you wanted to ;-)

When people complain that Python is sensitive to white space, remember 
this as the opposite extreme!

[Just for completeness I will add that there are rules about what 
"columns" the code has to be in, but that is separate from the white 
space issue.]


From bearophileHUGS at lycos.com  Thu Sep 21 10:51:02 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 21 Sep 2006 07:51:02 -0700
Subject: itertools.count(-3)
Message-ID: <1158850262.700169.306140@b28g2000cwb.googlegroups.com>

itertools.count docs say:
Does not currently support python long integers.
Note, count() does not check for overflow and will return negative
numbers after exceeding sys.maxint. This behavior may change in the
future.

But it seems it doesn't support negative numbers too:

>>> from itertools import count, islice
>>> list(islice(count(), 0, 5))
[0, 1, 2, 3, 4]
>>> list(islice(count(10), 0, 5))
[10, 11, 12, 13, 14]
>>> list(islice(count(-3), 0, 5))
[4294967293L, 4294967294L, 4294967295L, 0, 1]
>>> def count2(n=0):
...     while True:
...         yield n
...         n += 1
...
>>> list(islice(count2(-3), 0, 5))
[-3, -2, -1, 0, 1]

If this isn't a bug, then maybe docs can tell about this too.

Bye,
bearophile



From mudengke at gmail.com  Sat Sep 30 15:34:59 2006
From: mudengke at gmail.com (mudengke at gmail.com)
Date: 30 Sep 2006 12:34:59 -0700
Subject: Typing UTF-8 characters in IDLE
In-Reply-To: <mailman.998.1159620513.10491.python-list@python.org>
References: <mailman.998.1159620513.10491.python-list@python.org>
Message-ID: <1159644898.993497.93150@m73g2000cwd.googlegroups.com>

thanks, it is useful.

but ,why this line "encoding = locale.getdefaultlocale()[1]" in
original file"IOBinding.py " ,
don't work?

it should be work



kazuo fujimoto wrote:
> Ricky,
>
> I found your message now, because I also would encounter the same
> problem.
>
>
> > A few unicode tutorials on the web show that it's possible to type
> > unicode characters into the IDLE gui...
> >
> > However, when i type korean (hangul) characters it complains:
> >
> > Unsupported Characters in input
> >
> > I don't have a great understanding of unicode, but when I use a UTF-8
> > source file with korean strings in, and run it as a CGI script it
> > works fine.
> >
> > I'm using python 2.3.3 on win XP.
> >
> > Any tutorials / info anyone could point me to? Thanks...
>
> Now I am using Hangle with Japaese.
>
> What I did is as follow.
>
> My Python is now 2.4.3
>
> 1) open the IOBinding.py in $python/idellib
> 2) see the block just after line35, and insert one line.
> ----
> encoding = "ascii"                                       # line 35
> if sys.platform == 'win32':
>     # On Windows, we could use "mbcs". However, to give the user
>     # a portable encoding name, we need to find the code page
>     try:
>         encoding = locale.getdefaultlocale()[1]
>         codecs.lookup(encoding)
>     except LookupError:
>         pass
>     encoding = 'utf-8' ## <- this line force the encoding to utf-8.
> -----
> 3) save the file and quit Idle and reopen Idle.
>
> I hope my experience will solve your problem.
>
> (It has passed 2 years and more, so you might already solve the problem.
> I you know better solution, please inform me.)
> 
> kazuo



From ian at excess.org  Mon Sep 25 11:18:15 2006
From: ian at excess.org (Ian Ward)
Date: Mon, 25 Sep 2006 11:18:15 -0400
Subject: ANN: Templayer 1.4 - HTML templating library
Message-ID: <4517F337.90003@excess.org>

Announcing Templayer 1.4
------------------------

Templayer home page:
   http://excess.org/templayer/

Tarball:
   http://excess.org/templayer/templayer-1.4.tar.gz


About this release:
===================

This release improves integration with the Django web framework by 
reducing the amount of code required in Django views and by allowing use 
of Django forms in Templayer templates.  Also, two new HTML Markup tags 
were added and it is now possible for flat template files (files with no 
layers) to be used.


New in this release:
====================

   - Added a django_form convenience function for using Templayer
     with the Django web framework's FormWrapper objects.

   - Added an allow_degenerate parameter to Template.__init__.  If
     set to True then a template file that is missing a contents
     block will be accepted and not cause an exception to be raised.

   - Added a special layer name '*' that treats the entire contents
     of a template file as a layer.

   - Added two new HTML Markup elements:
     - ('pluralize',count,singular_markup,plural_markup) inserts
       singular_markup if count equals one, and plural_markup
       otherwise.
     - ('&',entity) inserts the given HTML entity where valid
       entity values include "gt", "#161" and "#xA9".

   - FileLayer.close now returns the file object to which it wrote.
     This simplifies the code required to use Templayer in Django
     view functions.

   - Fixed a really obvious bug in the html_href function.


About Templayer
===============

Templayer was created to offer an alternative to the more common ways of
generating dynamic HTML: embedding code within the HTML or embedding
HTML within code. Instead of mixing HTML and Python, two rich and
extremely expressive languages, Templayer adds a small amount of syntax
to each and keeps the two separate and coherent.

Templayer is released under the GNU LGPL.





From fuzzyman at gmail.com  Thu Sep 14 04:57:59 2006
From: fuzzyman at gmail.com (Fuzzyman)
Date: 14 Sep 2006 01:57:59 -0700
Subject: How to build extensions on Windows?
In-Reply-To: <4508D322.3080202@v.loewis.de>
References: <edp56g$66u$1@foggy.unx.sas.com>
	<1158192360.269240.61800@h48g2000cwc.googlegroups.com>
	<4508D322.3080202@v.loewis.de>
Message-ID: <1158224279.869752.110830@i42g2000cwa.googlegroups.com>


Martin v. L?wis wrote:
> Fuzzyman schrieb:
> > More interestingly, someone reported on Python-dev recently a speed
> > improvement of around 30% (from memory) by compiling with VC 8. I know
> > the grumble (almost certainly correctly) about Microsoft's 'odd'
> > interpretation of the C standards in VC 8, but it looks like there are
> > major benefits to switching...
>
> You may or may not know that it is futile arguing about compiler
> switching for released versions of Python, i.e. 2.3, 2.4, and 2.5.
> Whether or not it might be a good idea: it can't be done, for
> compatibility with prior releases.

Of course, but Python development continues... Into the future..

Fuzzyma
http://www.voidspace.org.uk/python/index.shtml

> 
> Regards,
> Martin



From JohnRoth1 at jhrothjr.com  Fri Sep 22 11:29:13 2006
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: 22 Sep 2006 08:29:13 -0700
Subject: Isn't bool __invert__ behaviour "strange"?
In-Reply-To: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
Message-ID: <1158938953.622976.184960@i3g2000cwc.googlegroups.com>


Saizan wrote:
> Why subclassing bool from int either __invert__ or __neg__ haven't been
> overrided to produce a boolean negation? I suspect backwards
> compatibility or something alike, but I still wonder..
>
> And since bool can't be subclassed, to have a type like bool but with
> boolean negation what do you suggest? A wrapper maybe?
>
>
> (I would use it so I can evaluate user-defined boolean expression
> creating istances of his/her variables in my namespace and than eval()
> his/her expression)

The not operator and the bool() builtin produce
boolean results. Since bool is a subclass of int,
all the integer operations will remain integer
operations. This was done for backwards
compatability, and is unlikely to change in the 2.x
series.

I don't remember if this is supposed to change
in 3.0. See PEP 3100 and 3099.

John Roth

John Roth



From kylotan at gmail.com  Wed Sep 20 06:54:09 2006
From: kylotan at gmail.com (Ben Sizer)
Date: 20 Sep 2006 03:54:09 -0700
Subject: Request for elucidation: enhanced generators
Message-ID: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>

A simple question - can anybody give a short example of how these work
and what they are good for? I've read PEP 342 and the associated bit in
the What's New section and it's still all Greek to me. The latter seems
to focus on how to do it, rather than why you'd do it, so it doesn't
aid the understanding too much.

-- 
Ben Sizer



From tim.peters at gmail.com  Tue Sep 12 22:16:43 2006
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 12 Sep 2006 22:16:43 -0400
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <y9JNg.1213$IA.251@newssvr11.news.prodigy.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<y9JNg.1213$IA.251@newssvr11.news.prodigy.com>
Message-ID: <1f7befae0609121916hcb717e2ldf7cc2497f23e8af@mail.gmail.com>

[Licheng Fang]
>> Basically, the problem is this:
>>
>> >>> p = re.compile("do|dolittle")
>> >>> p.match("dolittle").group()
>> 'do'

...

>> The Python regular expression engine doesn't exaust all the
>> possibilities, but in my application I hope to get the longest possible
>> match, starting from a given point.
>>
>> Is there a way to do this in Python?

[Bryan Olson]
> Yes. Here's a way, but it sucks real bad:
>
>
>      def longest_match(re_string, text):
>         regexp = re.compile('(?:' + re_string + ')$')
>          while text:
>             m = regexp.match(text)
>              if m:
>                  return m
>              text = text[:-1]
>          return None

If you want to try something like that, note that the match() method
accepts optional slice arguments, so the "text = text[:-1]" business
can be replaced with much quicker little-integer arithmetic.


From fanglicheng at gmail.com  Tue Sep 12 01:51:38 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 11 Sep 2006 22:51:38 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <1158038345.439986.45600@i3g2000cwc.googlegroups.com>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
Message-ID: <1158040298.528737.52520@e3g2000cwe.googlegroups.com>

Oh, please do have a look at the second link I've posted. There's a
table comparing the regexp engines. The engines you've tested probably
all use an NFA implementation.

MonkeeSage wrote:
> Licheng Fang wrote:
> > Hi, according to these regexp engine discussions, it's NOT a behavior
> > true to any implementation.
> > [snip]
>
> Well, I just double-checked in ruby (oniguruma regexp engine):
>
> r = Regexp.new("do|dolittle")
> puts r.match("dolittle")[0]
> # do
>
> r = Regexp.new("one(self)?(sufficient)?")
> puts r.match("oneselfsufficient")[0]
> # oneself
>
> And perl:
>
> if ("doolittle" =~
>     /(do|dolittle)/) {
>   print "$1\n";
>   # do
> }
>
> if ("oneselfsufficient" =~
>     /(one(self)?(selfsufficient)?)/) {
>   print "$1\n";
>   # oneself
> }
>
> And Javascript (whatever regexp engine Spidermonkey uses):
>
> var r = new RegExp(/do|dolittle/);
> alert("dolittle".match(r)[0]);
>
> var r = new RegExp(/one(self)?(selfsufficient)?/);
> alert("oneselfsufficient".match(r)[0]);
>
> So, it seems they are all broken, or python is correct as well.
> 
> Regards,
> Jordan



From eduardo.rosa at gmail.com  Sat Sep  2 01:47:29 2006
From: eduardo.rosa at gmail.com (eduardo.rosa at gmail.com)
Date: 1 Sep 2006 22:47:29 -0700
Subject: Libraries in python
Message-ID: <1157176049.124197.249310@h48g2000cwc.googlegroups.com>

Hy people, I'm new in python and comming from JAVA.

Something I really like in java is the easy way to add a library to the
project. Just put the jar file in the folder ( WEB-INF/lib ) and
doesn't need to restart the server ( tomcat ).

Can I do some like using python - I'm using apache mod_python?

thanks a lot



From enleverlesX.XmcX at XmclaveauX.com  Wed Sep  6 06:50:46 2006
From: enleverlesX.XmcX at XmclaveauX.com (Méta-MCI)
Date: Wed, 6 Sep 2006 12:50:46 +0200
Subject: OpenOffice.org and Python
References: <slrnefrv2p.9pc.sybrenUSE@schuimige.stuvel.eu>
	<mn.31bd7d694f278d16.46195@XX.XmclaveauX.com>
	<slrneft2is.cqd.sybrenUSE@schuimige.stuvel.eu>
	<1157534643.495840.112110@h48g2000cwc.googlegroups.com>
	<slrneft6l1.duo.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <44fea84a$0$27389$ba4acef3@news.orange.fr>

Hi!

>>> Poor people.

Poor people... but (very) rich client!!! ;-)


@+

Michel Claveau





From alfaeco at gmail.com  Sat Sep 16 02:31:27 2006
From: alfaeco at gmail.com (alfaeco at gmail.com)
Date: 15 Sep 2006 23:31:27 -0700
Subject: Looking for a python IDE
Message-ID: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>

Hello

I am looking for a good IDE for Python. Commercial or Open Software.

If possible with visual GUI designer.

For the moment I am considering Komodo.

Any suggestions?

Thanks in advance



From jstroud at mbi.ucla.edu  Wed Sep 27 19:18:42 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 23:18:42 GMT
Subject: generator with subfunction calling yield
In-Reply-To: <1159396746.073994.28680@h48g2000cwc.googlegroups.com>
References: <1159396746.073994.28680@h48g2000cwc.googlegroups.com>
Message-ID: <mFDSg.5303$TV3.2560@newssvr21.news.prodigy.com>

andy.leszczynski at gmail.com wrote:
> Hi,
> 
> I might understand why this does not work, but I am not convinced it
> should not - following:
> 
> def nnn():
>     print 'inside'
>     yield 1
> 
> def nn():
>     def _nn():
>         print 'inside'
>         yield 1
> 
>     print 'before'
>     _nn()
>     print 'after'
> 
> 
> for i in nnn():
>     print i
> 
> for i in nn():
>     print i
> 
> 
> 
> gives results:
> 
> $ python f.py
> inside
> 1
> before
> after
> Traceback (most recent call last):
>   File "f.py", line 18, in ?
>     for i in nn():
> TypeError: iteration over non-sequence
> 
> while I would expect:
> $ python f.py
> inside
> 1
> before
> inside
> 1
> after
> 
> Any insight?
> 
> andy
> 

In the commented line, you are only creating a generator. This is not 
equivalent to calling its "next" function, i.e., nothing will be 
"yielded" the way you have written it.


def nn():
     def _nn():
         print 'inside'
         yield 1

     print 'before'
     _nn()              # <== just makes a generator
     print 'after'

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From walterbyrd at iname.com  Tue Sep 26 14:48:44 2006
From: walterbyrd at iname.com (walterbyrd)
Date: 26 Sep 2006 11:48:44 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <45186d05$0$13975$edfadb0f@dread15.news.tele.dk>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<45186d05$0$13975$edfadb0f@dread15.news.tele.dk>
Message-ID: <1159296524.293839.306170@k70g2000cwa.googlegroups.com>

Max M wrote:
> walterbyrd skrev:
> > If so, I doubt there are many.
> >
> > I wonder why that is?
>
> Because you are ignorant?

In this particular subject: yes.

My research of this subject was very limited, just looked at the major
job boards, and compared demand for python developers to demand for
other languages, such as java, c++, visual basic, or php. An
unscientific test, I realize. But, it's not easy to get good data on
such a subject: everybody has an agenda, it seems.

I don't count jobs where python is an "also ran" skill. For example,
sys-admin jobs where python is listed with a dozen other skills.

The posts in this thread have been helpful.



From tenax.raccoon at gmail.com  Mon Sep 11 22:35:23 2006
From: tenax.raccoon at gmail.com (Jason)
Date: 11 Sep 2006 19:35:23 -0700
Subject: Running python from a usb drive
In-Reply-To: <1158026095.979937.206300@i42g2000cwa.googlegroups.com>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
	<1158024872.905234.117100@m73g2000cwd.googlegroups.com>
	<1158026095.979937.206300@i42g2000cwa.googlegroups.com>
Message-ID: <1158028522.981282.159760@m73g2000cwd.googlegroups.com>

cjl wrote:
> Hey all:
>
> It seems no matter what I do the %1 gets replaced by paramaters sent to
> the batch file...there must be some way of "escaping" this, but I can't
> find the answer (yet) with google. Anyone?
>
> -CJL

Use two percents in a row turn into a single percentage sign.  So you'd
want "%%1".

    --Jason



From fredrik at pythonware.com  Fri Sep  1 11:49:13 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 01 Sep 2006 17:49:13 +0200
Subject: os.name under Win32
In-Reply-To: <44F8514E.4030004@mekensleep.com>
References: <44F8514E.4030004@mekensleep.com>
Message-ID: <ed9kpp$305$1@sea.gmane.org>

Igor Kravtchenko wrote:

> We have an application using Python that is intended to work both under 
> Win32 and Linux.
> Since some parts of the code need to be different depending whether we 
> are under Win32
> or Linux, we use the traditional:
> 
> if os.name == "posix":
>   some Linux code
> else:
>   some Win32 code

the usual thing to test for is sys.platform, not os.name.

    if sys.platform == "win32":
        some win32 code (or win64 code)
    else:
        some linux code

> However, we have noticed that under some circumstances, in some cases, 
> in some computers under Windows XP Family that the "posix" code was
 > executed causing of course a crash.

sounds weird.  have you checked your code so you don't assign to os.name 
somewhere, by accident?

</F>



From tim at tdw.net  Fri Sep 29 12:59:44 2006
From: tim at tdw.net (Tim Williams)
Date: Fri, 29 Sep 2006 17:59:44 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <R53646951.569.1564.1@mx-extra>
References: <451D25A3.7010803@googlemail.com> <R53637327.467.1352.3@mx-extra>
	<mailman.949.1159543590.10491.python-list@python.org>
	<W53645725.803.1323.1@mx-extra>
	<mailman.957.1159547987.10491.python-list@python.org>
	<R53646951.569.1564.1@mx-extra>
Message-ID: <9afea2ac0609290959l2b591db3kdfdb5ea496e08f0b@mail.gmail.com>

On 29 Sep 2006 09:47:12 -0700, Paul Rubin
<"http://phr.cx"@nospam.invalid> wrote:
> "Tim Williams" <tim at tdw.net> writes:
> > My reply was in response to a post that mentioned a known problem with
> > this,  what happens when the previously running program doesn't exit
> > gracefully, and leaves the directory in place ??
>
> Don't use the presence or absence of a file as a lock.  Have the file
> there all the time, and have the app open it and use fcntl to get an
> exclusive kernel lock on the file descriptor.  That lock should go
> away when the process exits, so you don't have to worry about cleaning
> it up.  See "man fcntl" for details.

That's the same kind of principle as my posted snippet,  it doesn't
rely on the file's presence or absence as such.  It only cares when
the file exists *and* is held open by another process.    When the
process exits,  the lock ends without needing to clean up.

It works on Windows, but that doesn't help the OP :)


From antroy at gmail.com  Wed Sep 20 09:46:34 2006
From: antroy at gmail.com (Ant)
Date: 20 Sep 2006 06:46:34 -0700
Subject: Request for elucidation: enhanced generators
In-Reply-To: <1158754746.300782.256090@m73g2000cwd.googlegroups.com>
References: <1158749649.478502.208210@d34g2000cwd.googlegroups.com>
	<mailman.323.1158750988.10491.python-list@python.org>
	<1158754746.300782.256090@m73g2000cwd.googlegroups.com>
Message-ID: <1158759994.685905.159130@m7g2000cwm.googlegroups.com>


Ben Sizer wrote:
...
> But do you have an example of such a use case? That's what I'm missing
> here.

I've been looking at this myself, trying to understand the point of
coroutines. I believe that they boil down to generators which are able
to take in data as well as provide it. A simple way of looking at it
seems to be that a coroutine is a generator which can have its state
changed whilst it is still active. A silly example to illustrate:

# coroutine.py
def stateful_generator(people):
    greeting = "Hello"
    for person in people:
       received = (yield greeting + " " + person)
       if received:
           greeting = received

if __name__ == "__main__":
    people = ["bob", "henry", "jim-lad", "boney", "greebo", "badger"]
    gen = stateful_generator(people)

    print gen.next()                     # Hello bob
    print gen.next()                     # Hello henry
    print gen.send("Yo! ")            # Yo!  jim-lad
    print gen.next()                     # Yo!  boney
    print gen.send("Meow ")        # Meow  greebo
    print gen.next()                     # Meow  badger

So you can change the behaviour of the coroutine whilst it is running.
That's as far as I have got with them though - there are presumably
many other uses of coroutines out there as I guess this use case could
be simulated using generators and globals.



From rmuschall at tecont.de  Wed Sep 13 11:44:46 2006
From: rmuschall at tecont.de (Ralf Muschall)
Date: Wed, 13 Sep 2006 17:44:46 +0200
Subject: Gadfly server startup error
In-Reply-To: <mailman.28.1158158120.10491.python-list@python.org>
References: <g3cjt3-ub6.ln1@prcm.tecont.de>	<mailman.407.1158108135.5279.python-list@python.org>	<h0blt3-5v9.ln1@prcm.tecont.de>
	<mailman.28.1158158120.10491.python-list@python.org>
Message-ID: <fkllt3-5qa.ln1@prcm.tecont.de>

Steve Holden wrote:

> Yes, the whole Gadfly SF web seems to be a bit of a mess.

Maybe it has been infected by the source code+doc ;-)

I just started the server (after applying Carl's changes)
with

gfserver 2222 foodb . ''

(the DB "foodb" had been created earlier using gfplus
locally).

If I look for it with "nmap localhost -p 2222", it enters
an endless loop (I don't know whether it would still work
after this, since I could not get it to work at all).

gfplus in client-mode wants the argument order
  DB, port-No, password, host
(inferred from the source, i.e. the manual is wrong).

The argument order of commandlines and functions seems to be
a general problem - maybe I should try all 24 possibilities
(almost each place in the source does them differently).

After that, it says

|gfplus $Revision: 1.7 $ -- Interactive gadfly shell  [readline]
|
|Wednesday September 13, 2006 04:53 PM
|Using:
|Policy: foodb
|Loc: localhost:2222

i.e. it includes a thing called "Policy" (unexplained, just
mentioned in the "Security" chapter of the server manual)
and fills it with the value of the database name (but comparing
scripts/gfplus.py and client.py, "database" and "policy" seem
to be synonyms (but this disagrees with server.py)).

Entering a lone semicolon+return at the client prompt causes
a timeout in the client and a message

|no such policy: foodb
|main loop on <socket._socketobject object at 0x4080838c> <gadfly.database.gadfly instance at 0x40435eac>
|server: waiting for connection(s)

in the server (which is true in some sense, since I never made
a policy - I just want a blood DB).

It seems the proper way to use gadfly over the net is to say

echo 'SQL statement;' | ssh -l remoteuser 'gfplus -localoptions'

:-(

Is anybody out there who has used the server+client operation
mode successfully?

Ralf


From mccredie at gmail.com  Wed Sep  6 16:27:14 2006
From: mccredie at gmail.com (Matimus)
Date: 6 Sep 2006 13:27:14 -0700
Subject: Data sticking around too long
In-Reply-To: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
References: <1157572559.601660.63400@p79g2000cwp.googlegroups.com>
Message-ID: <1157574434.643964.218110@m73g2000cwd.googlegroups.com>

taskName and scanList are defined at the class level making them class
attributes. Each instance of the ScannerCommand class will share its
class attributes. What you want are instance attributes which can be
initialized whithin the constructor like so:

>>> class ScannerCommand:
...     def __init__(self):
...         self.taskName = ''
...         self.scanList = []
...         print "Creating a ScannerCommand object; list has " + \
...               str(len(self.scanList)) + " objects."


CedricCicada at gmail.com wrote:
> Greetings!
>
> Here's my script:
>
> ########  start of script
> class ScannerCommand:
>     taskName = ''
>     scanList = []
>
>     def __init__(self):
>         print "Creating a ScannerCommand object; list has " + \
>               str(len(self.scanList)) + " objects."
>
> class Scanner:
>     def Read(self, data):
>         command = ScannerCommand()
>         command.scanList.append(data)
>         return command
>
> class Handler:
>     def Process(self, dataList):
>         print "Processing data"
>         for data in dataList:
>             print "   " + data
>         print "Finished processing data."
>
> if __name__ == '__main__':
>     s = Scanner()
>     count = 0
>     for data in ["Zero", "One", "Two", "Three"]:
>         command = s.Read(data)
>         handler = Handler()
>         handler.Process(command.scanList)
> ##############  End of script
>
> Here's the result:
>
> ##########  Start of result
> Processing data
>    Zero
> Finished processing data.
> Creating a ScannerCommand object; list has 1 objects.
> Processing data
>    Zero
>    One
> Finished processing data.
> Creating a ScannerCommand object; list has 2 objects.
> Processing data
>    Zero
>    One
>    Two
> Finished processing data.
> Creating a ScannerCommand object; list has 3 objects.
> Processing data
>    Zero
>    One
>    Two
>    Three
> Finished processing data.
> ################  End of result
>
> I had expected to get "Zero" by itself, then "One" by itself, and so
> on.
>
> Why is the ScannerCommand object being created with a scanList that
> contains the data that was in the previously created ScannerCommand
> object?  And what do I have to do to ensure that the code that is run
> when I call ScannerCommand() gives me an object with an empty scanList?
>
> I am a C++ developer in a shop that uses some Python as well, and I
> just ran across this behavior for the first time.  I believe it is due
> to the difference between binding a variable to an object, as Python
> does, and actually creating the variable, as a similar C++ application
> would do.
>
> Thank you very much.
> 
> Rob Richardson
> RAD-CON, Inc.
> Bay Village, OH



From fredrik at pythonware.com  Sun Sep  3 06:26:46 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 03 Sep 2006 12:26:46 +0200
Subject: CONSTRUCT -
In-Reply-To: <1157240956.074166.131100@m79g2000cwm.googlegroups.com>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<1157240956.074166.131100@m79g2000cwm.googlegroups.com>
Message-ID: <edeal5$mic$1@sea.gmane.org>

Simon Forman wrote:

> I'm sorry, your post makes very little sense.

you're somewhat new here, right ? ;-)

</F>



From theller at python.net  Fri Sep 22 14:17:00 2006
From: theller at python.net (Thomas Heller)
Date: Fri, 22 Sep 2006 20:17:00 +0200
Subject: py2exe compression not working with Python 2.5
In-Reply-To: <1158945839.871351.39780@k70g2000cwa.googlegroups.com>
References: <1158945839.871351.39780@k70g2000cwa.googlegroups.com>
Message-ID: <ef19at$c88$1@sea.gmane.org>

nikie schrieb:
> When I try to compress the output of py2exe like this:
> 
>   from distutils.core import setup
>   import py2exe
> 
>   setup(console=['hello.py'], options={"py2exe": {"compressed": 1}})
> 
> I get strange error messages:
> 
> Adding zlib.pyd to C:\tests\CanControllerTest\New Folder
> (2)\dist\library.zip
> Traceback (most recent call last):
>   File "setup.py", line 4, in <module>
>     setup(console=['hello.py'], options={"py2exe": {"compressed": 1}})
>   File "C:\Python25\lib\distutils\core.py", line 151, in setup
>     dist.run_commands()
>   File "C:\Python25\lib\distutils\dist.py", line 974, in run_commands
>     self.run_command(cmd)
>   File "C:\Python25\lib\distutils\dist.py", line 994, in run_command
>     cmd_obj.run()
>   File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 218,
> in run
>     self._run()
>   File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 285,
> in _run
>     self.create_binaries(py_files, extensions, dlls)
>   File "C:\Python25\lib\site-packages\py2exe\build_exe.py", line 591,
> in create_
> binaries
>     bytes = zlib_file.read()
> AttributeError: 'NoneType' object has no attribute 'read'
> 
> This is a standard Python 2.5 installation. Doing the same thing with
> 2.4 works like a charm.
> 
> Did I miss anything?
> 
Patches for this have been posted to the py2exe-users list.

Thomas



From pmcgover at gmail.com  Sat Sep 23 18:16:25 2006
From: pmcgover at gmail.com (pmcgover at gmail.com)
Date: 23 Sep 2006 15:16:25 -0700
Subject: Converting Perl Web Report to Python
In-Reply-To: <%5gRg.5231$UG4.3934@newsread2.news.pas.earthlink.net>
References: <1159016655.956844.27090@d34g2000cwd.googlegroups.com>
	<%5gRg.5231$UG4.3934@newsread2.news.pas.earthlink.net>
Message-ID: <1159049785.902232.101130@h48g2000cwc.googlegroups.com>

Dennis,
Wow! Talk about RAD development... Nice job...  Errr, real nice job.  I
will test your concepts and see how it works.
Thanks a ton.  You far exceeded my expectations!
Pat

Dennis Lee Bieber wrote:
> On 23 Sep 2006 06:04:16 -0700, "pmcgover at gmail.com" <pmcgover at gmail.com>
> declaimed the following in comp.lang.python:
>
> 	Answering bottom up...
> >
> > Could this script be easily converted to Python?  How would you execute
> > the Msql command line and direct the output to a variable for display
> > in the cgi script?  Would it be possible to easily enhance this script
> > by allowing the user to pass in an SQL query parameter to the sql
> > script?  I attempted this in Perl by substituting the string "p_1" in
> > the where clause of the sql code but I could not substitute this string
> > with the value in the cgi code (ie. $query =~ s/p_1/value_variable/;).
> > Perhaps it would be easier in Python?
> >
> > Also, would the user supplied parameter be a security issue?
>
> 	Unless you duplicate the type of checking a db-api module does for
> parameterized queries -- indubitably...
>
> 	I don't do PERL, but from what I see, they are essentially doing the
> equivalent of a popen() call.
>
> -=-=-=-=-=-=-=-=-	script1.py
> import os
>
> USERID = "BestiariaCP"  #this account is a read-only, no password
> DBNAME = "bestiaria"    #used for CherryTemplate page generation
>
> #   lacking a CGI interface, I'm just going to put in a few assignments
> query = "script1.sql"
> title = "This is demonstrably nonsense"
>
> cmdline = "mysql -H -u %s %s < %s" % (USERID, DBNAME, query)
>
> #   I don't know what header and start_html() do, so just a dummy here
> print """
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>%s</title>
> </head>
>
> <body>
> """ % title
>
> rpipe = os.popen(cmdline, "r")
> results = rpipe.readlines()
> rpipe.close()
>
> print '<h3 align="center">%s</h3>' % title
> print "".join(results)
> print '<br><h4 align="center">This was a sample</h4>'
> print "</body>\n</html>"
> -=-=-=-=-=-=-=-=-=-		script1.sql
> select name, URL, description, occurs
> from comics
> order by name;
> -=-=-=-=-=-=-=-=-=-		script1.html (excluded middle)
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>This is demonstrably nonsense</title>
> </head>
>
> <body>
>
> <h3 align="center">This is demonstrably nonsense</h3>
> <TABLE
> BORDER=1><TR><TH>name</TH><TH>URL</TH><TH>description</TH><TH>occurs</TH></TR><TR><TD>A
> Doemain of Our Own</TD><TD>http://www.doemain.com/</TD><TD>The new
> family on the block.</TD><TD>Typically Friday, though some Monday and
> Wednesday
> updates</TD></TR><TR><TD>Aford</TD><TD>http://www.afordturtle.com/</TD><TD>A
> turtle, a snake, and a robin; and their life in the
> forest.</TD><TD>Daily</TD></TR>
>
> <TR><TD>Virtual Comix</TD><TD>http://comix.keenspace.com/</TD><TD>He's
> the insane rabbit next door.</TD><TD>No updates since March of
> 2003</TD></TR><TR><TD>West Corner of the
> Park</TD><TD>http://www.graphxpress.com/</TD><TD>Inspired by FurryMUCK,
> and done by Jim Groat, the creator of <i>Red
> Shetland</i>.</TD><TD>Usually late Sunday, unless a Furry Convention
> happens</TD></TR><TR><TD>Whatever
> USA</TD><TD>http://whateverusa.keenspace.com/</TD><TD>A precocious
> porcupine pup and his pals.</TD><TD>Sporadic</TD></TR><TR><TD>Wild
> Angels</TD><TD>http://www.ottercomics.com/angels/</TD><TD>It'll put the
> fur of God in you.</TD><TD>Irregular (between two and seven times each
> month)</TD></TR><TR><TD>Wyldfire</TD><TD>http://www.morgankeithstudios.com/projects_wyldfire.html</TD><TD>What
> if the cat stuck up a tree <i>is</i> the fireman?</TD><TD>Archives
> available</TD></TR></TABLE>
> <br><h4 align="center">This was a sample</h4>
> </body>
> </html>
>
> 	Seems like a lot of hassle to go through when a Python function can
> generate similar results without losing the safety of parameterized
> queries (I do hope the SQL files the CGI is specifying were pre-defined,
> and not something the user uploads <G>)
>
>
> -=-=-=-=-=-=-=-		script2.py
> import MySQLdb
>
> USERID = "BestiariaCP"  #this account is a read-only, no password
> DBNAME = "bestiaria"    #used for CherryTemplate page generation
>
> #   lacking a CGI interface, I'm just going to put in a few assignments
> queryfile = "script1.sql"
> title = "This is demonstrably nonsense"
>
> cn = MySQLdb.connect(host="localhost", user=USERID, db=DBNAME)
> cr = cn.cursor()
>
> #   I don't know what header and start_html() do, so just a dummy here
> print """
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>%s</title>
> </head>
>
> <body>
> """ % title
>
> qin = open(queryfile, "r")
> query = " ".join(qin.readlines())
> qin.close()
>
> cr.execute(query)   #no parameters assumed
>
> #   THE FOLLOWING BLOCK OF CODE COULD EASILY BE MADE A
> #   FUNCTION IN SOME HTML REPORTING MODULE AS IT IS NOT
> #   DEPENDENT UPON THE ACTUAL QUERY TO KNOW WHAT TO PRODUCE
>
> print '<h3 align="center">%s</h3>' % title
> print '<table border="1">\n<tr>',
> for fld in cr.description:
>     print "<th>%s</th>" % fld[0],
> print "</tr>"
>
> for rec in cr:
>     print "<tr>",
>     for fld in rec:
>         print "<td>%s</td>" % fld,
>     print "</tr>"
> print "</table>"
>
> #	BACK TO ORIGINAL CONTENT
>
> print '<br><h4 align="center">This was a sample</h4>'
> print "</body>\n</html>"
>
> cr.close()
> cn.close()
> -=-=-=-=-=-		USES SAME SQL FILE
> -=-=-=-=-=-=-	script2.html (excluded middle)
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>
> <html>
> <head>
> 	<title>This is demonstrably nonsense</title>
> </head>
>
> <body>
>
> <h3 align="center">This is demonstrably nonsense</h3>
> <table border="1">
> <tr> <th>name</th> <th>URL</th> <th>description</th> <th>occurs</th>
> </tr>
> <tr> <td>A Doemain of Our Own</td> <td>http://www.doemain.com/</td>
> <td>The new family on the block.</td> <td>Typically Friday, though some
> Monday and Wednesday updates</td> </tr>
> <tr> <td>Aford</td> <td>http://www.afordturtle.com/</td> <td>A turtle, a
> snake, and a robin; and their life in the forest.</td> <td>Daily</td>
> </tr>
>
> <tr> <td>Virtual Comix</td> <td>http://comix.keenspace.com/</td>
> <td>He's the insane rabbit next door.</td> <td>No updates since March of
> 2003</td> </tr>
> <tr> <td>West Corner of the Park</td>
> <td>http://www.graphxpress.com/</td> <td>Inspired by FurryMUCK, and done
> by Jim Groat, the creator of <i>Red Shetland</i>.</td> <td>Usually late
> Sunday, unless a Furry Convention happens</td> </tr>
> <tr> <td>Whatever USA</td> <td>http://whateverusa.keenspace.com/</td>
> <td>A precocious porcupine pup and his pals.</td> <td>Sporadic</td>
> </tr>
> <tr> <td>Wild Angels</td> <td>http://www.ottercomics.com/angels/</td>
> <td>It'll put the fur of God in you.</td> <td>Irregular (between two and
> seven times each month)</td> </tr>
> <tr> <td>Wyldfire</td>
> <td>http://www.morgankeithstudios.com/projects_wyldfire.html</td>
> <td>What if the cat stuck up a tree <i>is</i> the fireman?</td>
> <td>Archives available</td> </tr>
> </table>
> <br><h4 align="center">This was a sample</h4>
> </body>
> </html>
> --
> 	Wulfraed	Dennis Lee Bieber		KD6MOG
> 	wlfraed at ix.netcom.com		wulfraed at bestiaria.com
> 		HTTP://wlfraed.home.netcom.com/
> 	(Bestiaria Support Staff:		web-asst at bestiaria.com)
> 		HTTP://www.bestiaria.com/



From bdesth.quelquechose at free.quelquepart.fr  Tue Sep 19 15:32:21 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 19 Sep 2006 21:32:21 +0200
Subject: new string method in 2.5 (partition)
In-Reply-To: <40XPg.6$1n3.149@news.tufts.edu>
References: <40XPg.6$1n3.149@news.tufts.edu>
Message-ID: <4510425e$0$12250$636a55ce@news.free.fr>

John Salerno a ?crit :
> Forgive my excitement, especially if you are already aware of this, but 
> this seems like the kind of feature that is easily overlooked (yet could 
> be very useful):
> 
> 
> Both 8-bit and Unicode strings have new partition(sep) and 
> rpartition(sep) methods that simplify a common use case.
> The find(S) method is often used to get an index which is then used to 
> slice the string and obtain the pieces that are before and after the 
> separator.

Err... is it me being dumb, or is it a perfect use case for str.split ?

> partition(sep) condenses this pattern into a single method 
> call that returns a 3-tuple containing the substring before the 
> separator, the separator itself, and the substring after the separator. 
> If the separator isn't found, the first element of the tuple is the 
> entire string and the other two elements are empty. rpartition(sep) also 
> returns a 3-tuple but starts searching from the end of the string; the 
> "r" stands for 'reverse'.
> 
> Some examples:
> 
> 
>  >>> ('http://www.python.org').partition('://')
> ('http', '://', 'www.python.org')
>  >>> ('file:/usr/share/doc/index.html').partition('://')
> ('file:/usr/share/doc/index.html', '', '')
>  >>> (u'Subject: a quick question').partition(':')
> (u'Subject', u':', u' a quick question')
>  >>> 'www.python.org'.rpartition('.')
> ('www.python', '.', 'org')
>  >>> 'www.python.org'.rpartition(':')
> ('', '', 'www.python.org')

I must definitively be dumb, but so far I fail to see how it's better 
than split and rsplit:

 >>> 'http://www.python.org'.split('://')
['http', 'www.python.org']
 >>> 'file:/usr/share/doc/index.html'.split('://')
['file:/usr/share/doc/index.html']
 >>> u'Subject: a quick question'.split(': ')
[u'Subject', u'a quick question']
 >>> u'Subject: a quick question'.rsplit(': ')
[u'Subject', u'a quick question']
 >>> 'www.python.org'.rsplit('.', 1)
['www.python', 'org']
 >>>

There are IMVHO  much exciting new features in 2.5 (enhanced generators, 
try/except/finally, ternary operator, with: statement etc...)


From timr at probo.com  Sat Sep  9 02:16:21 2006
From: timr at probo.com (Tim Roberts)
Date: Sat, 09 Sep 2006 06:16:21 GMT
Subject: ctypes listing dll functions
References: <1157714965.454577.269150@i3g2000cwc.googlegroups.com>
Message-ID: <mqm4g2hb6s6nn6b65vevdp2geoii68rivh@4ax.com>

marc.wyburn at googlemail.com wrote:
>
>hi all and before I start I apologise if I have this completely muddled
>up but here goes.
>
>I'm trying to call functions from a dll file in a python script but I
>can't work out what functions are available. I'm using ctypes.  I've
>tried using dir(ctypes_object) but the resultant output looks like a
>list of standard functions and not the ones I'm looking for.

As far as I know, there is no way with ctypes to enumerate the functions
exported by a DLL.  If you have Visual C++, you can use link.exe to do
this:
    link /dump /exports xxxxx.dll

>Also how can I tell if the dll was written in C or C++ as I understand
>C++ dlls can't be used.

Well, DLLs that use C++ features cannot be used.  If the exported names are
"decorated", then they can't be used.

>I have a header file that starts;
>
>#ifndef __DIRAC__
>#define __DIRAC__
>
>    // Prototypes
>
>    const char *DiracVersion(void);
>    void *DiracCreate(long lambda, long quality, long numChannels,
>float sampleRate, long (*readFromChannelsCallback)(float **data, long
>numFrames, void *userData));
>    void *DiracCreate(long lambda, long quality, long numChannels,
>float sampleRate, long (*readFromChannelsCallback)(float *data, long
>numFrames, void *userData));

That's called "function overloading": two functions with the same name but
slightly different parameters.  That is only available with C++, so I'm
afraid you are out of luck.  You may be able to use SWIG to generate an
interface for this; I've had good luck with SWIG.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From claudio.grondi at freenet.de  Thu Sep  7 14:17:34 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Thu, 07 Sep 2006 20:17:34 +0200
Subject: Printing Documents
In-Reply-To: <1157651301.622295.165810@d34g2000cwd.googlegroups.com>
References: <1157651301.622295.165810@d34g2000cwd.googlegroups.com>
Message-ID: <edpnnr$1r9$1@newsreader2.netcologne.de>

defcon8 wrote:
> How can I print html documents in Python on Windows?
> 
;-)

1. You start the Microsoft Internet Explorer and make some space on the 
Desktop for a Python shell window.
2. You start the Python shell and position it within the prepared space
3. Still looking at the Python shell you load the document into the 
Internet Explorer and then use its menu [File] -> [Print] to invoke 
printing (don't forget to keep your eye on the Python shell...)

;-)

Claudio Grondi
P.S. There are many options to automate usage of MSIE from Python, so 
maybe if you explain what you actually intend to achieve, someone else 
can give you a better advice.


From http  Tue Sep  5 20:31:11 2006
From: http (Paul Rubin)
Date: 05 Sep 2006 17:31:11 -0700
Subject: threading support in python
References: <4klub9Fcqv5kU1@individual.net>
	<1155932094.617287.84980@i3g2000cwc.googlegroups.com>
	<1155933754.114724.250180@i3g2000cwc.googlegroups.com>
	<gTqFg.16305$o27.3834@newssvr21.news.prodigy.com>
	<4knq9hFctlsuU1@individual.net>
	<1156001501.741149.162810@h48g2000cwc.googlegroups.com>
	<PsJFg.66833$u11.21481@tornado.ohiordc.rr.com>
	<1157214620.847062.68090@b28g2000cwb.googlegroups.com>
	<1157409631.751524.99560@b28g2000cwb.googlegroups.com>
	<1157469825.184895.176080@d34g2000cwd.googlegroups.com>
Message-ID: <7xbqptdeeo.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> Having memory protection is superior to not having it--OS designers
> spent years implementing it, why would you toss out a fair chunk of it?
>  Being explicit about what you're sharing is generally better than not.

Part of the win of programming in Python instead of C is having the
language do memory management for you--no more null pointers
dereferences or malloc/free errors.  Using shared memory puts all that
squarely back in your lap.

> I disagree with this, though.  The benefits of deterministic GC are
> huge and I'd like to see ref-counting semantics as part of the language
> definition.  That's a debate I just had in another thread, though, and
> don't want to repeat.

That's ok, it can be summarized quickly: it lets you keep saying

  def func(filename):
     f = open(filename)
     do_something_with(f)
     # exit from function scope causes f to automagically get closed,
     # unless the "do_something_with" didn't know about this expectation
     # and saved a reference for some reason.

instead of using the Python 2.5 construction

  def func(filename):
     with open(filename) as f:
        do_something_with(f)
     # f definitely gets closed when the "with" block exits

which more explicitly shows the semantics actually desired.  Not that
"huge" a benefit as far as I can tell.  Lisp programmers have gotten
along fine without it for 40+ years...


From wescpy at gmail.com  Thu Sep 14 17:37:41 2006
From: wescpy at gmail.com (wesley chun)
Date: 14 Sep 2006 14:37:41 -0700
Subject: Colorado Python seminar in November
In-Reply-To: <mailman.72.1158221503.10491.python-announce-list@python.org>
References: <mailman.72.1158221503.10491.python-announce-list@python.org>
Message-ID: <1158269861.498713.233250@k70g2000cwa.googlegroups.com>

in parallel to Mark's week-long Python seminar (Nov 6-10), we are
offering an alternative session focusing only on advanced topics. it is
3-days long (Nov 8-10) and will be held in San Francisco.

course description:
http://roadkill.com/~wesc/cyberweb/pp2dsc.html

general information:
http://cyberwebconsulting.com (click "Python training" link)

november sure seems like "back to school" month for those in the Python
community, and these are two great ways to develop, polish, and hone
your Python skills!

cheers,
-wesley

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
"Core Python Programming", Prentice Hall, (c)2007,2001
    http://corepython.com

wesley.j.chun :: wescpy-at-gmail.com
python training and technical consulting
cyberweb.consulting : silicon valley, ca
http://cyberwebconsulting.com



From jordan.taylor2 at gmail.com  Tue Sep 19 12:42:51 2006
From: jordan.taylor2 at gmail.com (Jordan)
Date: 19 Sep 2006 09:42:51 -0700
Subject: Writing Video conference software for Windows
In-Reply-To: <mailman.265.1158667756.10491.python-list@python.org>
References: <mailman.265.1158667756.10491.python-list@python.org>
Message-ID: <1158684171.132741.143840@i42g2000cwa.googlegroups.com>

If you're going to need win32 system access use the win32all python
extension (very, very good extension).  Do you need single frame image
capture, or constant video stream? PIL can be used for the first, it
might also be usable for video, I'm not sure. For sound, python comes
with some built in libraries, but you should also take a look at
pysonic http://www.cs.unc.edu/Research/assist/developer.shtml.  For the
bandwidth efficiency issue, what type of connection are you using? The
socket module is quite capable of transmiting whatever data you have,
so unless you're thinking of implementing some mini bittorrent like
network in an attempt to save bandwidth I don't know what you can do
about that. There's an extension called IPqueue which might give you
somewhere to start for packet/bandwidth manipulation.  Check out The
Vaults of Parnassus, which has a lot of stuff (including ogg/mp3
converters last time a check).    Big question, is this supposed to act
like a remote desktop, or just show what's happening?  Start by
searching Google, it's very useful.

Paolo Pantaleo wrote:
> Hi,
>
> I need to write a software that allow to see the desktop and hear the
> microphone capture of a remote PC across a network. I need to do that
> for a unviresity assignement. The software must  run on Windows. Since
> I like Python very much I am thinking to write that software in
> Python. Do you thinkit is a good choice? Are there libraries for audio
> compression (OGG or MP3 or maybe GSM or something like realaudio) and
> video compression (btw what can be some good libraries to transmit
> images of a desktop in a bandwidth-efficent way?). What about capture
> of audio and screen? (Probably i will need some Win32 system call,
> there are bindings in Python, aren't they?)
>
> If I needed to write some Python modules in C, would it be difficult?
>
> Can some language like C# or C++ may be better?
>
> Thnx
> PAolo
>
> --
> if you have a minute to spend please visit my photogrphy site:
> http://mypic.co.nr



From bj_666 at gmx.net  Fri Sep 22 11:28:14 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 22 Sep 2006 17:28:14 +0200
Subject: Global module variables as default parameters
References: <mailman.464.1158937836.10491.python-list@python.org>
Message-ID: <pan.2006.09.22.15.28.14.188832@gmx.net>

In <mailman.464.1158937836.10491.python-list at python.org>, Christoph Haas
wrote:

> TestModule.py
> ----------------------------------------
> globalvar = 0
> 
> def def1():
>   print globalvar
> 
> def def2(foo=globalvar):
>   print foo
> ----------------------------------------
> 
> Running the test.py script prints "123" and "0". So accessing the globalvar 
> in def1() works. But if I try to use the global variable as a default 
> parameter in def2() it uses the default "0". What is the difference 
> between these two? Are there contexts of default parameters?

Default parameters are evaluated *once* when the ``def`` is executed.  So
in `def2` the value of `foo` won't be looked up when calling the function
as it is already bound to the value 0.

Ciao,
	Marc 'BlackJack' Rintsch


From xah at xahlee.org  Sun Sep 24 23:15:30 2006
From: xah at xahlee.org (Xah Lee)
Date: 24 Sep 2006 20:15:30 -0700
Subject: String Pattern Matching: regex and Python regex documentation
In-Reply-To: <YC1Rg.1266$8O1.99@trnddc04>
References: <1158511809.605421.100510@d34g2000cwd.googlegroups.com>
	<45143567.2000903@lazaridis.com> <YC1Rg.1266$8O1.99@trnddc04>
Message-ID: <1159154130.615032.194810@i3g2000cwc.googlegroups.com>

Xah Lee wrote:
? the Python regex documentation is available at:
 http://xahlee.org/perl-python/python_re-write/lib/module-re.html ...?

J?rgen Exner wrote:
?Yeah, sure, and the Perl regex documentation is available at 'perldoc
perlre'.  So what? Is that anything new or surprising??

It is of interest and new, because it is a rewrite of Python's
documentation. And it is of interest to Perlers, because Perl and
Python uses the same regex syntax.

The purpose of this rewrite, is to fix Python's lousy documentation,
and to demonstrate a style of technical writing, where precision and
clarity is the prime directive.

It demonstrates a style of documentation, where the philosophy is
task-oriented and uses examples sans misgivings.  (in this aspect, it
is similar to the style of Perl's official documentation.)

Further, the exposition style focuses on the manifestation of the
language elements, as a piece of mathematics, a style often found in
functional language's documentations. It is opposed to, treating the
language as a state machine or compiler engine, which are often
necessarily the approach of imperative languages's documentations.

This project was undertaken as a response to a challenge put forth to
me with a $100 reward, on 2005-04-12 on comp.lang.python newsgroup. I
never received the due reward.

Thanks.

  Xah
  xah at xahlee.org
? http://xahlee.org/



From Ash.Shuklaa at googlemail.com  Sun Sep  3 10:58:02 2006
From: Ash.Shuklaa at googlemail.com (Ash.Shuklaa at googlemail.com)
Date: 3 Sep 2006 07:58:02 -0700
Subject: Python GUI/tk
Message-ID: <1157295482.231722.84490@e3g2000cwe.googlegroups.com>

Hi,

I am making a GUI with the help of python.In the program, when "ADD"
button is pressed new frames build up and when you press "delete"
button those frames will be destroyed . My problem is that these frames
only get destroyed in Tk but the data structure associated with it (in
Python) doesn't change.


#!/usr/bin/python
from Tkinter import*

class Frame_1(LabelFrame):
    def __init__(self,master):
        LabelFrame.__init__(self,master)
        self.configure(text="Frame1")
        self.grid()

    def control_buttons(self,frame):
        Button( self, text = "Add", command = frame.add_button ).grid(
)
        Button( self, text = "Read", command = frame.read_button
).grid()

class Frame_2(LabelFrame):
    def __init__(self,master):
        LabelFrame.__init__(self,master)
        self.configure(text ="Frame2")
        self.grid()
        self.sub_frame = []

    def add_button(self):
        new_frame = Frame_2_1(self)
       # new_frame.grid()
        new_frame.populate()
        self.sub_frame.append(new_frame)
      #  print self.sub_frame

    def read_button(self):
        print "#"*10
        for sub_frame in self.sub_frame :
            print "-"*30
            print "band:"+ sub_frame.band.get()
            print "channel:" + sub_frame.channel.get()

class Frame_2_1(LabelFrame):
    def __init__(self,tkmaster):
        LabelFrame.__init__(self,tkmaster)
        self.configure(text ="DEFAULT")
        self.grid()

    def populate(self):
        self.band = StringVar()
        self.band.set("900")
        option = OptionMenu(self, self.band,"900","1800","1900"
).grid()

        self.channel = StringVar()
        self.channel.set("CS 1")
        option = OptionMenu(self,self.channel,"CS 1","CS 2","CS 3","CS
4").grid( )

        global temp
        temp= temp+1
        Button(self,text = "Remove"+ str(temp),command=
self.delete_frame).grid()


    def delete_frame(self):
        self.destroy()

root = Tk()
temp=-1
# Create frame 1
frame_1 =  Frame_1(root)
# Create frame 2
frame_2 = Frame_2(root)

frame_1.control_buttons(frame_2)
root.mainloop()
--------------------------------------------------------------------------



From ask at me  Sun Sep  3 10:47:01 2006
From: ask at me (alf)
Date: Sun, 03 Sep 2006 10:47:01 -0400
Subject: FYI: getting data from an OpenOffice.org spreadsheet
In-Reply-To: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
References: <slrneflrpk.agc.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <9qCdnchfm_sQa2fZnZ2dnUVZ_t2dnZ2d@comcast.com>

Sybren Stuvel wrote:
> Hi folks,
> 
> Sometimes I have to feed data from an OpenOffice.org spreadsheet into
> some Python program. To make that really easy, I've written a small
> example program that connects to a running OpenOffice.org instance and
> reads the data from the currently opened spreadsheet.
> 
> Check out http://www.stuvel.eu/archive/28/ to see the source and
> requirements. It took a lot of digging in the rather complex OOo API
> documentation, but the end result is just as I like it: clean and
> simple. I hope this helps people out!
> 
> Sybren

thx for sharing the experience. Do you know how to save a OO doc into M$ 
Excel format - I have a Python based server running on Linux box and 
need to produce Excel files.

-- 
alf


From fanglicheng at gmail.com  Tue Sep 12 05:08:50 2006
From: fanglicheng at gmail.com (Licheng Fang)
Date: 12 Sep 2006 02:08:50 -0700
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
Message-ID: <1158052130.208312.300250@d34g2000cwd.googlegroups.com>


Bryan Olson wrote:
> Licheng Fang wrote:
> > Oh, please do have a look at the second link I've posted. There's a
> > table comparing the regexp engines. The engines you've tested probably
> > all use an NFA implementation.
>
> Unfortunately, the stuff about NFA's is wrong. Friedl's awful
> book was the first time I saw this confusion about what NFA is;
> I don't know if he originated the mess or just propagated it.
>
> "Nondeterministic finite automata" is well defined in theory
> of computation. The set of languages accepted by NFA's is
> exactly the same as the set accepted by DFA's.
>
> What Python uses is search-and-backtrack. Unfortunately such
> engines don't have much theory behind them, and it's hard to
> reason generally about what they do.
>
>
> --
> --Bryan

Thanks for the valuable information. Indeed, when I read the pages, I
was a little confused about what it meant by 'NFA'.

But I faintly felt, there might be an indirect, and not not very exact
mapping from the search-and-backtrack strategy to NFAs in the sense of
computer science, e.g. a state machine with the capability to be in
several states at one time.

Say, when reading 'oneselfsufficient', the engine goes along the NFA
first to state 1, and then faces the choice between

        one         self, none        selfsufficient, none
(start)------->((1))------------>((2))----------------------->((3))

1) matching 'self',
2) going on to state 2 without matching anything, or
3) just give 'one' as the matching result because state 1 is already a
terminal state

In such situations it always chooses the greedy way. To match more, it
goes to the state 2, munching 'self'. And now it's left with only
'sufficient'. Here it's choices are:

1) matching nothing and going to state 3
2) just give 'oneself' as result because state 2 is also a terminal
state

Again it's greedy, going on to state 3, in hope of matching more. But
here the pattern comes to an end, represented by state 3 as a terminal
state. So the engine gives 'oneself' as result and forgets about its
previously unexplored possibilities, because it only performs backtrack
when a match cannot be found.

I think if the backtrack is carried out in an exaustive way, we may say
the engine trys every possibility on the NFA, though it's not an NFA
itself.



From sjmachin at lexicon.net  Tue Sep 26 20:26:51 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 17:26:51 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159315897.885088.302950@m7g2000cwm.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<mailman.744.1159305439.10491.python-list@python.org>
	<1159308273.158474.253230@m7g2000cwm.googlegroups.com>
	<1159315897.885088.302950@m7g2000cwm.googlegroups.com>
Message-ID: <1159316811.481250.321780@e3g2000cwe.googlegroups.com>


flyingisfun1217 at gmail.com wrote:
> > Tis question was just asked on the py2exe mailing list. I predicted
> > that if it was asked here, you would respond asking exactly which
> > examples didn't work. :-p
>
> Right you were :-)
>
> Just want to learn what I already know as a great programming
> interface(?)/language...
>

In that case, don't burn bandwith by banal banter, post the examples!



From g.brandl-nospam at gmx.net  Mon Sep 25 03:16:47 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 25 Sep 2006 09:16:47 +0200
Subject: Reverse a String?
In-Reply-To: <1159135991.941286.203480@i42g2000cwa.googlegroups.com>
References: <mailman.505.1159045338.10491.python-list@python.org>
	<4515a15f$0$19913$4d3efbfe@news.sover.net>
	<1159047299.209370.261420@b28g2000cwb.googlegroups.com>
	<mailman.520.1159088110.10491.python-list@python.org>
	<1159135991.941286.203480@i42g2000cwa.googlegroups.com>
Message-ID: <ef7vp0$eh2$1@news.albasani.net>

p.lavarre at ieee.org wrote:
>> http://pyfaq.infogami.com/
> 
> Tell me more?
> 
> Clueless newbie me, thru this door I'm at three deaths and counting.
> Does that Py Faq Wiki have a sandbox a la alt.test, and/or a tutorial?
> 
> // Death One:
> 
> http://pyfaq.infogami.com/_account/in?path=/
> requires me to create a persisting ID "between 3 and 20 letters and
> numbers", i.e., not an e-mail address.  Grumble, ok.
> 
> // Death Two:
> 
> http://pyfaq.infogami.com/programming-index
> kicked back comment "How can I reverse a string, an array, a list,
> etc.?" with "Sorry, that looks like spam. I'm not going to post it."

I must say that this has also happened to me before. Fredrik, is there
some description of what infogami regards as spam? Do comments have to
have a minimum length?

That said, hasn't it worked well in the past to use no spam filter, if
you have to be registered to post comments?

Georg


From felipe.lessa at gmail.com  Fri Sep  8 20:56:40 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Fri, 8 Sep 2006 21:56:40 -0300
Subject: convert loop to list comprehension
In-Reply-To: <7xvenxx4j3.fsf@ruckus.brouhaha.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
Message-ID: <c2701f5c0609081756j6560462bo78687ca017c42958@mail.gmail.com>

08 Sep 2006 17:33:20 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid>:
> bearophileHUGS at lycos.com writes:
> > print sum( ([i]*n for i,n in enumerate(seq)), [])
>
> Wow, I had no idea you could do that.  After all the discussion about
> summing strings, I'm astonished.

Why? You already had the answer: summing *strings*. Everything but
strings can be summed by sum(). E.g.:

Python 2.4.3 (#2, Apr 27 2006, 14:43:58)
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> class x(object):
...     def __add__(self, other):
...             return x(self.a + other.a)
...     def __init__(self, a):
...             self.a = a
...
>>> t = x(10)
>>> t.a
10
>>> sum([t, t])
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: unsupported operand type(s) for +: 'int' and 'x'
>>> sum([t, t], t)
<__main__.x object at 0xb7d6752c>
>>> _.a
30
>>> sum([t, t], x(0)).a
20
>>> sum([t, t]*1000, t).a
20010


-- 
Felipe.


From bj_666 at gmx.net  Fri Sep  1 09:40:49 2006
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Fri, 01 Sep 2006 15:40:49 +0200
Subject: Question about import and namespace
References: <1157109701.182636.23260@m79g2000cwm.googlegroups.com>
	<ed96t9$l81$03$1@news.t-online.com>
	<1157115719.609101.73660@i42g2000cwa.googlegroups.com>
Message-ID: <pan.2006.09.01.13.40.47.918922@gmx.net>

In <1157115719.609101.73660 at i42g2000cwa.googlegroups.com>, jdemoor wrote:

>> from module import *
>> import module
>>
>> as these kinds of import are not mutually exclusive.
> 
> Would this run the code in 'module' twice, or just make the objects in
> it accessible by several names ?

The code at module level is only executed at first import.

Ciao,
	Marc 'BlackJack' Rintsch


From bearophileHUGS at lycos.com  Wed Sep 20 11:39:30 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 20 Sep 2006 08:39:30 -0700
Subject: Is it possible to change a picture resolution with Python?
In-Reply-To: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
Message-ID: <1158766770.656305.91530@h48g2000cwc.googlegroups.com>

Lad:
> Is it possible to change a picture resolution with Python?
> Let's say I have a picture with a resolution of 96 dpi and I would like
> to increase to 256dpi or higher.

"Resolution" is a too much overloaded word, from some point of view
increasing the resolution of images is a very difficult thing, that may
need deblurring, etc. So let's talk in a simpler way, about the len of
the sides of the image measured in pixels.
To increase such len, you can use PIL library, the resize method from
image:
http://www.pythonware.com/library/pil/handbook/image.htm

This is some example code:

from PIL import Image
im = Image.open("1.jpg")
nx, ny = im.size
im2 = im.resize((int(nx*1.5), int(ny*1.5)), Image.BICUBIC)
im2.save("2.png")

Bye,
bearophile



From lutz at rmi.net  Wed Sep 13 16:23:06 2006
From: lutz at rmi.net (Mark Lutz)
Date: 13 Sep 2006 13:23:06 -0700
Subject: Colorado Python seminar in November
Message-ID: <1158178986.436451.18260@i3g2000cwc.googlegroups.com>

Just a reminder that the Fall 2006 Colorado Python seminar
is now less than 2 months away.  Space is limited, so plan
now to come join us for a week of in-depth Python training
in the Colorado Rockies.  For details, please see the
original announcement below.

------------------------------------------------------------

Mark Lutz's Python Training Services is pleased to announce
that our Fall 2006 public Colorado seminar is now open.
This 5-day Python training event will be held November 6
through November 10.

This year, our Fall seminar will be held at Historic Crag's
Lodge, a resort in Estes Park, Colorado.  Estes Park is a
mountain town 80 miles from Denver's airport, and gateway
to Rocky Mountain National Park.

This in an all-inclusive event.  Come spend 5 days mastering
Python in the beautiful Colorado Rockies, and let us handle
the details of your visit.  We will be providing students
with rooms at the resort, three full meals per day, a guided
sightseeing tour, shuttle service to and from the Denver
airport, and our new "Snake Charmers" T-shirt.

Besides the included amenities, the extended format of this
session will allow for in-depth coverage of class topics.
Like all our public classes, this seminar will be taught by
best-selling Python author and trainer Mark Lutz, and is
open to individual enrollments.

For more details, please see our web page:

http://home.earthlink.net/~python-training/public.html

--Python Training Services



From ask at me  Wed Sep 27 00:57:11 2006
From: ask at me (alf)
Date: Wed, 27 Sep 2006 00:57:11 -0400
Subject: re.compile().split(): why it produces empty string as a first
	element   of the list
In-Reply-To: <mailman.771.1159335306.10491.python-list@python.org>
References: <KZCdnT686dFRlofYnZ2dnUVZ_oGdnZ2d@comcast.com>
	<mailman.771.1159335306.10491.python-list@python.org>
Message-ID: <lLidnaMLFaJMkofYnZ2dnUVZ_qednZ2d@comcast.com>

Fredrik Lundh wrote:
> alf wrote:
> 
>> Let's run following:
>>
>>  >>> re.compile('(\[.*?\])').split('[aa]bb[11]22')
>> ['', '[aa]', 'bb', '[11]', '22']
>>
>> Why does it return '' as a first element of the list?
> 
> 
> because the string starts with a separator.
> 
> </F>
> 
so is it safe to say that the index of separator in the list is always 
an odd number?

-- 
alfz1


From moqtar at gmail.com  Fri Sep 29 06:55:53 2006
From: moqtar at gmail.com (Kirt)
Date: 29 Sep 2006 03:55:53 -0700
Subject: File I/O
In-Reply-To: <1159526934.077334.69080@i42g2000cwa.googlegroups.com>
References: <1159524677.406011.250420@i3g2000cwc.googlegroups.com>
	<1159526934.077334.69080@i42g2000cwa.googlegroups.com>
Message-ID: <1159527353.447436.107610@i42g2000cwa.googlegroups.com>


jimburton wrote:
> Kirt wrote:
> > Hi! I need some help in file I/O
> >
> > I have an xml file..
> [snip]
> See http://diveintopython.org/xml_processing/

i dont wanna parse the xml file..

Just open the file as:

f=open('test.xml','a')

and append a line "<Body2>abc</Body2>" before  tag </Top>



From http  Mon Sep  4 16:06:31 2006
From: http (Paul Rubin)
Date: 04 Sep 2006 13:06:31 -0700
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
Message-ID: <7xy7sziego.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> If it's read/write data or you're not on a Unix platform, you can use
> shared memory to shared it between many processes.
> 
> Threads are way overused in modern multiexecution programming.  The
> decision on whether to use processes or threads should come down to
> whether you want to share everything, or whether you have specific
> pieces of data you want to share.

Shared memory means there's a byte vector (the shared memory region)
accessible to multiple processes.  The processes don't use the same
machine addresses to reference the vector.  Any data structures
(e.g. those containing pointers) shared between the processes have to
be marshalled in and out of the byte vector instead of being accessed
normally.  Any live objects such as open sockets have to be shared
some other way.  It's not a matter of sharing "everything"; shared
memory is a pain in the neck even to share a single object.  These
things really can be easier with threads.


From bvdp at xplornet.com  Fri Sep  8 20:28:51 2006
From: bvdp at xplornet.com (bvdp at xplornet.com)
Date: 8 Sep 2006 17:28:51 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<Xns9839C4FD80E2rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <1157761731.042621.77150@p79g2000cwp.googlegroups.com>

Rob Williscroft wrote:

<snip>

> But my forth attemp yeilded (If that's a pun I do appologise)
> this:
>
> >>> [ x for a in range(len(seq)) for x in [a] * seq[a] ]

Ahh, that's the magic ... I didn't understand that one could have
multiple "statments" in this single line. Now, you can't have python
line "for a in ... for b in..." can you? I probably shoudn't even try
to figure out how/why it works in a [list].

> [0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
> >>>
>
> Which is possibly something you might of expected.
>
> Note the unrolled version goes:
>
> >>> tmp = []
> >>> for a in range(len(seq)):
>        for x in [a] * seq[a]:
>            tmp.append( x )
>
> >>> tmp
> [0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]
> >>>
>
> IOW a comprehension appends rather than extends. Other than
> that you move the value you're appending from the inside of
> the loop('s) to the begining of the comprehension then remove
> newlines and colon's [inside some brakets ofcourse].
>
> Rob.
> --
> http://www.victim-prime.dsl.pipex.com/

Cool ... and damn but you guys are fast with the answers. This appears
to work find, but in a quick and dirty test it appears that the [list]
version takes about 2x as long to run as the original loop. Is this
normal?



From horpner at yahoo.com  Fri Sep 29 10:22:09 2006
From: horpner at yahoo.com (Neil Cerutti)
Date: 29 Sep 2006 16:22:09 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
References: <mailman.868.1159427578.10491.python-list@python.org>
	<efg10i$olr$1@mlucom4.urz.uni-halle.de>
	<mailman.870.1159434346.10491.python-list@python.org>
	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
	<efhril$nrm$1@lust.ihug.co.nz>
	<mailman.916.1159498252.10491.python-list@python.org>
	<1159504789.195261.325120@i42g2000cwa.googlegroups.com>
	<1159506495.429866.303030@c28g2000cwb.googlegroups.com>
	<mailman.918.1159509387.10491.python-list@python.org>
Message-ID: <slrnehqb1f.130.horpner@FIAD06.norwich.edu>

On 2006-09-29, Steve Holden <steve at holdenweb.com> wrote:
> MonkeeSage wrote:
>> So far as unobfuscated versions go, how about the simple:
>> 
>> def to_bin(x):
>>   out = []
>>   while x > 0:
>>     out.insert(0, str(x % 2))
>>     x = x / 2
>>   return ''.join(out)
>> 
>> Regards,

It was surprising that

>>> i = int("111010101", 2)

is a one-way operation.

>>> s = str(i, 2)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: str() takes at most 1 argument (2 given)

-- 
Neil Cerutti


From filipwasilewski at gmail.com  Fri Sep 15 11:59:20 2006
From: filipwasilewski at gmail.com (Filip Wasilewski)
Date: 15 Sep 2006 08:59:20 -0700
Subject: Searching for patterns on the screen
In-Reply-To: <mailman.125.1158327884.10491.python-list@python.org>
References: <mailman.125.1158327884.10491.python-list@python.org>
Message-ID: <1158335960.626894.171410@e3g2000cwe.googlegroups.com>

Jerry Hill wrote:
> Hello all,
>
> I have a piece of code I could use some help optimizing.  What I'm
> attempting to do is periodically grab a screenshot, and search for 2D
> patterns of black pixels in it.  I don't care about any color other
> than black.  Here's some simple code that simulates my worst-case
> scenario, scanning the whole screen for a sequence that does not
> exist:
>
> import ImageGrab  # From the PIL library
>
> def removeColor(rgb):
>     r, g, b = rgb
>     return (r == 0 and g == 0 and b == 0)
>
> BMP = ImageGrab.grab.getdata()
> x = map(removeColor, BMP)
>
> The idea is to search for sequences of black pixels on a background
> that can change colors.  To that end, I transform the screengrab into
> a sequence of either black or nonblack pixels as I search them. Note
> that in my actual code, I use imap so I only transform pixels as I
> search them, and I'm using the KnuthMorrisPratt algorithm from
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/117214 to do
> the actual searching.
>
> >From some testing using the timeit module:
> map(None, BMP) takes about 0.6 seconds on a 1600x1200 screengrab.
> map(removeColor, BMP) takes about 1.5 seconds.
>
> I'd love to speed things up, if possible.  It seems like what I'm
> doing would probably be a fairly well defined problem, but I don't
> know enough about the field to even know where to start my research,
> so even a list of keywords that would point me to discussion of
> similar topics would be welcome.
>
> This is being done in Python 2.5c2 using PIL 1.1.5
>
> --
> Jerry

Calling Python function for every pixel results in significant
overhead. Instead of that you can use numpy to do the preprocesing.

im = ImageGrab.grab()
a = numpy.fromstring(im.tostring(), dtype=[('r','|u1'), ('g','|u1'),
('b','|u1')])
a.shape = im.size[::-1]
black = (a['r'] == 0) & (a['g'] == 0) & (a['b'] == 0)

s = black.tostring() # sequence of '\x00' and '\x01'

You can also take a look at scipy ndimage
(http://www.scipy.org/doc/api_docs/scipy.ndimage.html) if in need of
more specific routines.

cheers,
fw



From john.hicken at gmail.com  Tue Sep 26 13:29:56 2006
From: john.hicken at gmail.com (John Hicken)
Date: 26 Sep 2006 10:29:56 -0700
Subject: iterator question
In-Reply-To: <mailman.716.1159290541.10491.python-list@python.org>
References: <mailman.716.1159290541.10491.python-list@python.org>
Message-ID: <1159291796.411022.130380@k70g2000cwa.googlegroups.com>


Neal Becker wrote:
> Any suggestions for transforming the sequence:
>
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
>
> into a succession of tuples:
>
> [(1, 2), (3, 4)...]
>
> In other words, given a seq and an integer that specifies the size of tuple
> to return, then for example:
>
> seq = [a,b,c,d,e,f]
> for e in transform (seq, 2):
>   print e
>
> would return
> (a,b)
> (c,d)
> (e,f)

How about this:

def transform(seq,n):
    for k in xrange(0,len(seq),n):
        yield tuple(seq[k:k+n])



From qual at tiscali.de  Fri Sep  8 14:34:32 2006
From: qual at tiscali.de (Uwe Hoffmann)
Date: Fri, 08 Sep 2006 20:34:32 +0200
Subject: cx_Oracle question
In-Reply-To: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>
References: <jgb3g25mtf3tckvtf7fdpv7mg67540j27c@4ax.com>
Message-ID: <edsd10$18po$1@ulysses.news.tiscali.de>

Richard Schulman schrieb:

> 
> cursor.execute("""select mean_eng_txt from mean
>                   where mean_id=:arg_1""",arg_1)

cursor.execute("""select mean_eng_txt from mean
                    where mean_id=:arg_1""",{"arg_1":arg_1})

> Traceback (most recent call last):
>    File "oracle_test.py", line 7, in ?
>       cursor.execute('select mean_eng_txt from mean where
>       mean_id=:arg_1',arg_1)
> TypeError: expecting a dictionary, sequence or keyword args


From robert.kern at gmail.com  Tue Sep 26 00:42:16 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Mon, 25 Sep 2006 23:42:16 -0500
Subject: Iterating by both element and index?...
In-Reply-To: <b62Sg.5599$e66.668@newssvr13.news.prodigy.com>
References: <b62Sg.5599$e66.668@newssvr13.news.prodigy.com>
Message-ID: <efab33$7vj$1@sea.gmane.org>

kenneth.m.mcdonald at sbcglobal.net wrote:
> I'd like to iterate over a sequence by both element
> and index, something like
> 
> for (element, index) in somefun(sequence):
>     ...

for index, element in enumerate(sequence):
     ...

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From jstroud at mbi.ucla.edu  Thu Sep 21 15:31:23 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 21 Sep 2006 19:31:23 GMT
Subject: how to use timer in python
In-Reply-To: <eetlv6$8jd$1@news.cn99.com>
References: <eetlv6$8jd$1@news.cn99.com>
Message-ID: <fMBQg.4979$7I1.492@newssvr27.news.prodigy.net>

yxh wrote:
> how to use timer in python.
> the functionnality is like the MFC SetTimer()
> 
> 

Try this (a little more flexible than Timer):

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/464959

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From wildemar at freakmail.de  Thu Sep 14 18:08:36 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Fri, 15 Sep 2006 00:08:36 +0200
Subject: Looking for the Perfect Editor
In-Reply-To: <624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<624934630609141419x679948a9qb644f597b2ff32fe@mail.gmail.com>
Message-ID: <4509D2E4.9060503@freakmail.de>

Ramon Diaz-Uriarte wrote:
>> c) can run programs right from within
> 
> But of course. And, contrary to some others (e.g., JEdit, which I
> think forces you to use Jython, so you are stuck with Python 2.1 for
> now) you use the current python interpreter you have installed.

Wrong. But so terribly wrong ;). Jython is not at all needed to use 
python with jEdit. I think the only reason to actually use Jython in 
jEdit is for writing plugins in python syntax. No wait, you also get 
code completion and a code browser, but thats besides the ppoint here.
The console plugin (probably THE most useful of the pack) gives you a 
system shell and means to start compilers/interpreters based on your 
current edit mode. So you can use whatever python version you have 
installed.

I wonder if this thread will ever stop :)



From mystilleef at gmail.com  Sat Sep  9 08:18:30 2006
From: mystilleef at gmail.com (mystilleef)
Date: 9 Sep 2006 05:18:30 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
Message-ID: <1157804310.885280.53070@b28g2000cwb.googlegroups.com>

I recommend Scribes.

http://scribes.sf.net

Flash Demo: http://scribes.sf.net/snippets.htm

GIF Demo: http://www.minds.may.ie/~dez/images/blog/scribes.html

Omar wrote:
> I'd love the perfect editor that would be:
>
> a) free
>
> b) enable me to drag and drop code snippets from a sort of browser into
> the code
>
> c) can run programs right from within
>
> d) can edit
>       - PYTHON
>       - Javascript
>       - HTML
>       - actionscript (since I'm also learning flash)
> 
> e) easy to learn
> 
> suggestions?



From sumesh.chopra at gmail.com  Wed Sep 20 14:16:59 2006
From: sumesh.chopra at gmail.com (unexpected)
Date: 20 Sep 2006 11:16:59 -0700
Subject: Python regular expression question!
In-Reply-To: <hbf.20060920g9x@bombur.uio.no>
References: <1158771260.946086.312390@b28g2000cwb.googlegroups.com>
	<hbf.20060920g9x@bombur.uio.no>
Message-ID: <1158776219.549237.14430@k70g2000cwa.googlegroups.com>


> \b matches the beginning/end of a word (characters a-zA-Z_0-9).
> So that regex will match e.g. MULTX-FOO but not MULTX-.
> 

So is there a way to get \b to include - ?



From paul.johnston at manchester.ac.uk  Mon Sep  4 09:39:36 2006
From: paul.johnston at manchester.ac.uk (Paul Johnston)
Date: Mon, 04 Sep 2006 14:39:36 +0100
Subject: Unicode characters
Message-ID: <579of2dotq4rjh60a4jkloohdkokni2eac@4ax.com>

Hi
I have a string which I convert into a list then read through it
printing its glyph and numeric representation

#-*- coding: utf-8 -*-

thestring = "abcd"
thelist = list(thestring)

for c in thelist:
     print c,
     print ord(c)

Works fine for latin characters but when I put in a unicode character
a two byte character gives me two characters. For example an arabic
alef returns

*  216
* 167

( the first asterix is the empty set symbol the second a double "s")

Putting in sequential characters i.e. alef, beh, teh mabuta, gives me
sequential listings i.e.
216  167
216  168
216  169 
So it is reading the correct details.


Is there anyway to get the c in the for loop to recognise it is
reading a multiple byte character.
I have followed the info in PEP 0263 and am using Python 2.4.3 Build
12 on a Windows box  within Eclipse 3.2.0 and Python plugins 1.2.2

Cheers Paul


From jstroud at mbi.ucla.edu  Wed Sep 27 06:41:37 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 10:41:37 GMT
Subject: What's up with site.Quitter?
In-Reply-To: <efdcui$acr$1@news.albasani.net>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
	<efdcui$acr$1@news.albasani.net>
Message-ID: <BzsSg.16764$IA.13334@newssvr11.news.prodigy.com>

Georg Brandl wrote:
> James Stroud wrote:
>> Hello All,
>>
>> Still jubilantly configuring my work environment for python 2.5, I 
>> came accross a curiosity when writing an automatic vim syntax file 
>> creator (so I can automatically update my syntax coloring with future 
>> python releases).
>>
>> It seems I can find a reference to just about every type except those 
>> for "exit" and "quit" in the standard library somewhere. E.g.:
>>
>> py> type(__builtins__.Ellipsis) is types.EllipsisType
>> True
>>
>> However, in an appearant break with consistency, this can not be done 
>> for "exit" and "quit" because site.Quitter is nested inside of the 
>> setquit() function in the site.py module.
>>
>> Would moving this class definition to module level be something that 
>> would meet with great resistance?
> 
> Not really, but what would you do with it? It's an internal object used
> for only exit() and quit(), and of no real use elsewhere.
> 
> Georg

Outside of my type checking against it for syntax coloring, I have no 
idea. I just get a funny feeling with computers when exceptions to a 
general pattern come along. But then again, maybe the consistency I 
perceive for the rest of __builtins__ is more or less illusory. This 
might have been the point of Fredrik's question.

James


From http  Mon Sep 11 19:43:11 2006
From: http (Paul Rubin)
Date: 11 Sep 2006 16:43:11 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
	<poydncIOL_eM8pjYnZ2dnUVZ_sSdnZ2d@comcast.com>
	<1158009296.414226.305020@i42g2000cwa.googlegroups.com>
	<2_qdnc_KSK50bZjYnZ2dnUVZ_uWdnZ2d@comcast.com>
Message-ID: <7x8xkqkm0g.fsf@ruckus.brouhaha.com>

Larry Bates <larry.bates at websafe.com> writes:
> As far as "rational extension" is concerned, I think I can relate.
> As a developer of imaging systems that store multiple-millions of
> scanned pieces of paper online for customers, I can promise you
> the file system is quite efficient at storing files (and that is
> what the OP asked for in the original post) and way better than
> storing in Oracle blobs.  Can you store them in the database,
> absolutely.  Is it efficient and manageable.  It has been our
> experience that it is not.  Ever tried to upgrade Oracle 9 to
> Oracle 10 with a Tb of blobs?

I keep hearing complaints about Oracle's blob handling and I don't
doubt they're true, but that sounds like an Oracle problem.  I haven't
had any problems using blobs in MySQL though I've been a fairly
lightweight user.


From jaysherby at gmail.com  Fri Sep 15 20:00:57 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 17:00:57 -0700
Subject: Tkinter.Button(... command) lambda and argument problem
In-Reply-To: <7x1wqcsn6o.fsf@ruckus.brouhaha.com>
References: <1158363383.752921.58920@d34g2000cwd.googlegroups.com>
	<7x1wqcsn6o.fsf@ruckus.brouhaha.com>
Message-ID: <1158364857.344930.259230@k70g2000cwa.googlegroups.com>

Perfect.  Thanks.


Paul Rubin wrote:
> "Jay" <jaysherby at gmail.com> writes:
>
> > I'm having a problem using lambda to use a command with an argument for
> > a button in Tkinter.
> >
> >                 buttons = range(5)
> > 		for x in xrange(5):
>
> > self.highlight(x))
> > 			buttons[x].pack(side=LEFT)
> >
> > The buttons are correctly numbered 1 through 5, but no matter which
> > button I click on, it sends the number 4 as an argument to the
> > highlight function.
>
> x is not bound by the lambda and so the lambda body gets it from the
> outside environment at the time the body is executed.  You have to
> capture it at the time you create the lambda.  There's an ugly but
> idiomatic trick in Python usually used for that:
>
>   buttons[x] = Button(frame, text=str(x+1),   \
>         command=lambda x=x: self.highlight(x))
>
> See the "x=x" gives the lambda an arg whose default value is set to
> x at the time the lambda is created, as opposed to when it's called.



From NormanTindall at zdisk.net  Fri Sep 29 15:22:35 2006
From: NormanTindall at zdisk.net (OneMustFall)
Date: 29 Sep 2006 12:22:35 -0700
Subject: Sockets in python
Message-ID: <1159557755.437424.44670@m73g2000cwd.googlegroups.com>


      Reciently i wrote a simple client (in twisted) using Reconnecting
Factory.
      That client logins to my socket server.. and that`s it.

      Interesting thing is that it is seems that twisted client,
      sends some ping on a TCP level without sending any data to the
      socket directly.
      Because when i pull out cord from the ethernet card simulating
      network falure, client in about 10-15 seconds determines that
      connection lost!! (pretty cool)
      While my server thinks that client is connected.
      I know that sockets ware designed to behave so.. to be tolarate
to
      network problems, but in my case this is bad.. i want it to
      behave like in twisted.

      I have searched in a socketmodule.c from python source code for a
      magic variables, but did not found anything that fits.

      I am using SO_KEEPALIVE on server - but documentations says
      it will only ping (and so timed outed) in a few hours.

      How do i make my server act the same way as twisted client?
      (to make some sort of a low level checking if a connections is
      broken without actualy sending anything to socket)

      The only suspicious lines intwisted is seems :

---------------------------------------------------------------------------
SO_UPDATE_ACCEPT_CONTEXT = 0x700B
SO_UPDATE_CONNECT_CONTEXT = 0x7010

--------------------------------------------------------------------------
            try:
                acc_sock.setsockopt(socket.SOL_SOCKET,
SO_UPDATE_ACCEPT_CONTEXT, struct.pack("I", handle))
            except socket.error, se:
                self.transport.acceptErr(ret, bytes)
            else:
                self.transport.acceptDone(acc_sock,
acc_sock.getpeername())

--------------------------------------------------------------------------
            if have_connectex:
                try:
                    sock.setsockopt(socket.SOL_SOCKET,
SO_UPDATE_CONNECT_CONTEXT, "")
                except socket.error, se:

self.transport.connectErr(failure.Failure(error.ConnectError()))
            self.transport.connectDone()
---------------------------------------------------------------------------

    I tried this all but it trows an exeption and not working and also
i have no i idea what
SO_UPDATE_ACCEPT_CONTEXT , andSO_UPDATE_CONNECT_CONTEXT  means.

Huh. Any Suggestions?



From sjmachin at lexicon.net  Tue Sep 26 17:21:45 2006
From: sjmachin at lexicon.net (John Machin)
Date: 26 Sep 2006 14:21:45 -0700
Subject: Whither binary search?
In-Reply-To: <mailman.732.1159299946.10491.python-list@python.org>
References: <slrnehit3o.sk.horpner@FIAD06.norwich.edu>
	<mailman.722.1159296789.10491.python-list@python.org>
	<y4fSg.1876$5i7.112@newsreading01.news.tds.net>
	<mailman.732.1159299946.10491.python-list@python.org>
Message-ID: <1159305704.997567.250020@k70g2000cwa.googlegroups.com>


Fredrik Lundh wrote:
> Neil Cerutti wrote:
>
> >> bisect...
> >
> > That doesn't tell me if an item doesn't exist in the sequence
> > though, does it?  Maybe I'm being dense.
>
> I guess you could use something like
>
> import bisect
>
> def check(list, item):
>      try:
> 	return list[bisect.bisect_left(list, item)] == item
>      except IndexError:
> 	return False
>
> but unless your lists are really large, or your objects are expensive to
> compare, you could probably just use "in" instead.
>
>  > My guess nobody keeps their sequences sorted in Python.
>
> well, people tend to use dictionaries when they need to look things up
> quickly...

... like those paper dictionaries with the words in alphabetical order
:-)

A common use case for looking things up in a sorted list is an
in-memory table of dates and rates (interest rates, insurance premium
rates, fee rates). In a big batch job, this sure beats doing "select
rate from table where ? between low_date and high_date" each time you
need a rate.

Cheers,
John



From ryanlists at gmail.com  Wed Sep  6 22:42:35 2006
From: ryanlists at gmail.com (Ryan Krauss)
Date: Wed, 6 Sep 2006 21:42:35 -0500
Subject: iso creation for python backup script
Message-ID: <c5b438120609061942w7f23b5f1i18b54b30de33ccd4@mail.gmail.com>

I would like to write a python script to backup my wife's important
stuff to a CD or DVD.  She is running windows.  Is there an easy way
to create as iso image file using python or some other way to use
python to create (and burn?) a cd?  I am open to other free cd backup
tools that work in windows if there are any suggestions, but I want a
lot of flexibility about what goes into the backup (which is why I
would prefer to do it in python and have full control).

Thanks,

Ryan


From steve at REMOVEME.cybersource.com.au  Tue Sep 26 00:43:24 2006
From: steve at REMOVEME.cybersource.com.au (Steven D'Aprano)
Date: Tue, 26 Sep 2006 14:43:24 +1000
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>
	<mailman.569.1159192888.10491.python-list@python.org>
	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>
	<4517ec24$0$13947$edfadb0f@dread15.news.tele.dk>
Message-ID: <pan.2006.09.26.04.43.23.720373@REMOVEME.cybersource.com.au>

On Mon, 25 Sep 2006 16:48:03 +0200, Max M wrote:

> Any change in Python that has these consequences will rightfully be 
> considered a bug. So what you are suggesting is to knowingly introduce a 
> bug in the standard library!


It isn't like there have never been backwards _in_compatible changes to
the standard library before.

Ten seconds of googling finds
http://www.python.org/download/releases/2.3/highlights/:

    int() - this can now return a long when converting a string with many
    digits, rather than raising OverflowError. (New in 2.3a2: issues a
    FutureWarning when sign-folding an unsigned hex or octal literal.)

    Bastion and rexec - these modules are disabled, because they aren't
    safe in Python 2.3 (nor in Python 2.2). (New in 2.3a2.)

    Hex/oct literals prefixed with a minus sign were handled
    inconsistently. This has been fixed in accordance with PEP 237. (New
    in 2.3a2.)

    Passing a float to C functions expecting an integer now issues a
    DeprecationWarning; in the future this will become a TypeError. (New
    in 2.3a2.) 

    None - assignment to variables or attributes named None will now
    trigger a warning. In the future, None may become a keyword.

And more, all from one release.

If the behaviour of cgi.escape is "broken", or incomplete, or misleading,
then Python has a great mechanism for introducing incompatible changes
slowly: warnings.

It isn't good enough to say that the function does what it says it does,
if what it does is dangerous and misleading. Artificial example:

def sqr(x):
    """Returns the square of almost all numbers."""
    if x != 1: return x**2
    else: return -1

The function does exactly what it says, and yet still has badly dangerous
behaviour that risks introducing serious bugs. If people are relying on
unit tests which include specific tests for that behaviour, then the
function and the code needs to be fixed in parallel. That's what the
warnings module is for.

So any arguments about "breaking code" are a red herring: if cgi.escape
does the wrong thing (and that's arguable), and code relies on that
behaviour, then the code is already broken and needs to be fixed in
parallel with the function. So can we accept that:

(1) *if* there is a problem with cgi.escape it needs to be fixed;

(and, dear gods, I would hope that nobody here wants to argue that Python
should make backwards compatibility a higher virtue than correctness!)

(2) it doesn't need to be fixed *immediately* without warning;

(3) but it can be fixed through a gradual process with warning; and

(4) unit tests and code that expect the (presumed) bad behaviour can be
fixed gradually?

Now that we've got that out of the way, can we CALMLY and RATIONALLY
discuss whether cgi.escape is or isn't broken?

Or, more specifically, UNDER WHAT CIRCUMSTANCES it does the wrong thing?



-- 
Steven D'Aprano 



From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep 28 19:19:20 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Fri, 29 Sep 2006 01:19:20 +0200
Subject: using the email module
References: <451bfcca$1@nntp.zianet.com>
	<slrneho48k.c10.sybrenUSE@schuimige.stuvel.eu>
	<451c150f$1@nntp.zianet.com>
Message-ID: <slrnehom3o.d0t.sybrenUSE@schuimige.stuvel.eu>

Erik Johnson enlightened us with:
> # Ah! Yes, that works! Thank you! ;)

You're welcome!

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sun Sep 24 17:19:12 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 24 Sep 2006 23:19:12 +0200
Subject: Daemonizing python
References: <pan.2006.09.24.21.01.54.522795@net.hr>
	<7x8xk9t1mn.fsf@ruckus.brouhaha.com>
Message-ID: <4nob2hFbbk5nU1@individual.net>

Paul Rubin wrote:
> NinjaZombie <ninjazombie at net.hr> writes:

>> I was wondering if it is possible to turn the current python
>> proccess into a unix daemon, but not doing it like this:
>> python myscript.py &
>> but from code programaticaly.
 
> Yeah, os.fork and the parent process exits.

Or little helpers like twistd -- only feasible if you use Twisted
though.

Regards,


Bj?rn

-- 
BOFH excuse #438:

sticky bit has come loose



From jon+usenet at unequivocal.co.uk  Mon Sep 25 09:30:52 2006
From: jon+usenet at unequivocal.co.uk (Jon Ribbens)
Date: 25 Sep 2006 13:30:52 GMT
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>
	<mailman.499.1159035571.10491.python-list@python.org>
	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>
	<mailman.518.1159087749.10491.python-list@python.org>
	<ef5lb9$h1k$2@lust.ihug.co.nz> <ef5ncc$uus$1@news.albasani.net>
	<mailman.524.1159095305.10491.python-list@python.org>
	<ef7v0e$mn8$2@lust.ihug.co.nz>
	<mailman.559.1159188171.10491.python-list@python.org>
Message-ID: <slrnehfmg5.6tm.jon+usenet@snowy.squish.net>

In article <mailman.559.1159188171.10491.python-list at python.org>, Fredrik Lundh wrote:
> maybe you haven't done software long enough to understand that
> software works better if you use it the way it was intended to be
> used, but that's no excuse for being stupid.

So what's your excuse?


From gagsl-py at yahoo.com.ar  Wed Sep 27 23:06:33 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 00:06:33 -0300
Subject: a query on sorting
In-Reply-To: <efdohj$eq0$1@sea.gmane.org>
References: <20060927092030.76520.qmail@web8508.mail.in.yahoo.com>
	<efdohj$eq0$1@sea.gmane.org>
Message-ID: <7.0.1.0.0.20060927234935.03935368@yahoo.com.ar>

At Wednesday 27/9/2006 08:51, Steve Holden wrote:

>If you want the indexes as well you need to become a bit tricky.
>Remember that enumerate() will produced two-element tuples with the
>index value associated with the list value.
>
>   >>> [x for x in enumerate(a)]
>[(0, 9), (1, 4), (2, 3), (3, 5), (4, 2), (5, 6), (6, 7), (7, 1), (8, 2)]
>
>But you really want the index second, so the sort works on the list
>values not the index values. Combining all this we get
>
>   >>> sorted((x[1], x[0]) for x in enumerate(a))
>[(1, 7), (2, 4), (2, 8), (3, 2), (4, 1), (5, 3), (6, 5), (7, 6), (9, 0)]

Why forcing to use enumerate if it doesn't fit? And a generator won't 
help here since you have to access all the items.

sorted([(a[i],i) for i in range(len(a))])

If you want the ordered results and the indices exactly like in the 
matlab example:

 > [y,i] = sort(x);
y, i = zip(*sorted([(a[i],i) for i in range(len(a))]))



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From robert.kern at gmail.com  Thu Sep 14 12:20:37 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Thu, 14 Sep 2006 11:20:37 -0500
Subject: How do I converted a null (0) terminated string to a Python 
	string?
In-Reply-To: <eebu5q$t6a$1@sea.gmane.org>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>	<mailman.66.1158218413.10491.python-list@python.org>	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>	<pan.2006.09.14.15.36.07.509974@gmx.net>	<1158248572.373909.53420@d34g2000cwd.googlegroups.com>
	<eebu5q$t6a$1@sea.gmane.org>
Message-ID: <eebvgl$2fk$1@sea.gmane.org>

Robert Kern wrote:
> Michael wrote:
>> I guess, I still don't see how this will work. I'm receiving a C
>> zero-terminated string in my Python program as a 1K byte block (UDP
>> datagram). If the string sent was "abc", then what I receive in Python
>> is <a><b><c><0><garbage><garbage>...<last_garbage_byte>. How is Python
>> going to know where in this 1K byte block the end of the string is? It
>> seems that what I need to do is tell Python that the string ends at
>> zero-relative index 3. What am I missing here?
> 
> Nothing. This is what I would do:
> 
> 
> In [34]: s
> Out[34]: 'abc\x00garbage'
> 
> In [35]: s.split('\x00', 1)[0]
> Out[35]: 'abc'

And I see that this is the advice that John Machin already gave you. Shame on me 
for not reading the thread before replying.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From sjmachin at lexicon.net  Fri Sep 22 05:13:53 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 02:13:53 -0700
Subject: Don't use regular expressions to "validate" email addresses
In-Reply-To: <mailman.442.1158902652.10491.python-list@python.org>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<87lkoczp48.fsf_-_@benfinney.id.au> <eevo5f$abu$1@sea.gmane.org>
	<mailman.442.1158902652.10491.python-list@python.org>
Message-ID: <1158916433.621758.21640@m73g2000cwd.googlegroups.com>


Ben Finney wrote:
> Steve Holden <steve at holdenweb.com> writes:
>
> > Ben Finney wrote:
> > > The best advice I've seen when people ask "How do I validate
> > > whether an email address is valid?" was "Try sending mail to it".
> > >
> > That only applies if it's a likely-looking email address. If someone
> > asks me to send mail to "splurge.!#$%*&^from at thingie?><{}_)" I will
> > probably assume that it isn't worth my time trying.
>
> You, as a human, can possibly make that decision, if you don't care
> about turning away someone who *does* have such an email address. How
> can an algorithm do so? There are many valid email addresses that look
> as bizarre as the example you gave.
>
> > > The sending system's mail transport agent, not regular
> > > expressions, determines which part is the domain to send the mail
> > > to.
> > >
> > > The domain name system, not regular expressions, determines what
> > > domains are valid, and what host should receive mail for that
> > > domain.
> > >
> > > Most especially, the receiving mail system, not regular
> > > expressions, determines what local-parts are valid.
> > >
> > Nevertheless, I am *not* going to try delivery to (for example) a
> > non-local address that doesn't contain an "at@ sign.
>
> Would you try delivery to an email address that contains two or more
> "@" symbols? If not, you will be denying delivery to valid RFC2821
> addresses.
>
> This is, of course, something you're entitled to do. But you've then
> consciously chosen not to use "is the email address valid?" as your
> criterion, and the original request for such validation becomes moot.
>

What proportion of deliverable e-mail addresses have more than one @ in
them?
It may be a good idea, if the supplier of the e-mail address is a human
and is on-line, to run a plausibility check -- does it look like the
vast majority of addresses? Sure,
"fred at final.com@relay2.net at relay1.net" may be valid and deliverable,
but "clumsy at pastetwice.unorgclumsy@pastetwice.unorg" may be valid and
undeliverable. IMHO a quick "Please check and confirm" dialogue would
be warranted.

Cheers,
John



From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:31:24 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:31:24 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>
	<mailman.563.1159190394.10491.python-list@python.org>
	<4517e10e$0$13929$edfadb0f@dread15.news.tele.dk>
	<efa7cg$pr2$1@lust.ihug.co.nz> <efaknl$867$2@news.albasani.net>
Message-ID: <efakui$idf$4@lust.ihug.co.nz>

In message <efaknl$867$2 at news.albasani.net>, Georg Brandl wrote:

> Lawrence D'Oliveiro wrote:
>> In message <4517e10e$0$13929$edfadb0f at dread15.news.tele.dk>, Max M wrote:
>> 
>>> Lawrence is right that the escape method doesn't work the way he expects
>>> it to.
>>> 
>>> Rewriting a library module simply because a developer is surprised is a
>>> *very* bad idea.
>> 
>> I'm not surprised. Disappointed, yes. Verging on disgust at some comments
>> in this thread, yes. But "surprised" is what a lot of users of the
>> existing cgi.escape function are going to be when they discover their
>> code isn't doing what they thought it was.
> 
> Why should they be surprised? The documentation states clearly what
> cgi.escape() does (as does the docstring).

Documentation frequently states stupid things. Doesn't mean it should be
treated as sacrosanct.


From tagore at tagoresmith.com  Thu Sep 28 01:14:05 2006
From: tagore at tagoresmith.com (Tagore Smith)
Date: 27 Sep 2006 22:14:05 -0700
Subject: Computer Language Popularity Trend
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159349867.827187.270390@h48g2000cwc.googlegroups.com>
	<slrnehkht4.7kj.jon+usenet@snowy.squish.net>
	<0T3gh0itI5f2Nv8%stesch@parsec.no-spoon.de>
Message-ID: <1159420445.679988.116760@i3g2000cwc.googlegroups.com>

Stefan Scholl wrote:
> In comp.lang.lisp Jon Ribbens <jon+usenet at unequivocal.co.uk> wrote:
> > In article <1159349867.827187.270390 at h48g2000cwc.googlegroups.com>, mark.hoemmen at gmail.com wrote:
> >>> http://xahlee.org/lang_traf/index.html
> >>
> >> Careful there with the sweeping generalizations and quick judgments
> >> about languages :)
> >
> > I just read "PHP as a language is rather dry and business-like",
> > and fell off my chair.
>
> Well, business really is that crazy! :-)

Of the three people with whom I've worked who have sat on boards in the
Fortune 100, at least two of them have screwy reference semantics ;).



From steve at REMOVE.THIS.cybersource.com.au  Wed Sep 27 19:20:59 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Thu, 28 Sep 2006 09:20:59 +1000
Subject: Difference between two dates in seconds
References: <495c267b0609271112h1deb1926kdcec5b074efeba45@mail.gmail.com>
	<mailman.822.1159381205.10491.python-list@python.org>
Message-ID: <pan.2006.09.27.23.20.59.226695@REMOVE.THIS.cybersource.com.au>

On Wed, 27 Sep 2006 20:16:52 +0200, Fredrik Lundh wrote:

> Claes at work wrote:
> 
>> Please tell me there is a simpler way than subtracting two datetimes
>> to get a timedelta and then compute
>> 
>> days * number of seconds per day + seconds
>> 
>> from it myself??
> 
> why would you have to do that yourself?  why not let Python do it for 
> you?  here's the code:
> 
>     seconds = td.days * 86400 + td.seconds

I'm sure somebody as experienced as Fredrik doesn't need to be told why
peppering code with magic constants like 84600 are a less than ideal
solution -- and for those who do need to be told, carefully compare what I
wrote to what Fredrik wrote to see one of those reasons.

Arguably a better solution would be to do this:

seconds = td.days * 24*60*60 + td.seconds

Still not ideal though, although that depends on just how often you need
to convert days to or from seconds.


-- 
Steven.



From timr at probo.com  Thu Sep 21 02:36:16 2006
From: timr at probo.com (Tim Roberts)
Date: Thu, 21 Sep 2006 06:36:16 GMT
Subject: Is it possible to change a picture resolution with Python?
References: <1158762405.675765.185780@k70g2000cwa.googlegroups.com>
	<1158766770.656305.91530@h48g2000cwc.googlegroups.com>
	<1158768080.415936.41750@i3g2000cwc.googlegroups.com>
Message-ID: <m9c4h214piecdn0c5qe5g02990h7n4bv6p@4ax.com>

"Lad" <python at hope.cz> wrote:

>from
>> image:
>> http://www.pythonware.com/library/pil/handbook/image.htm
>>
>> This is some example code:
>>
>> from PIL import Image
>> im = Image.open("1.jpg")
>> nx, ny = im.size
>> im2 = im.resize((int(nx*1.5), int(ny*1.5)), Image.BICUBIC)
>> im2.save("2.png")
>>
>> Bye,
> bearophile,
>Thank you for your reply.
>But the above code increases size only , but not DPI resolutions(
>vertical nad horizontal).I need  a higher  vertical and horisontal
>resolutions.

I'm not convinced that you know what you are asking for.

Let's say you have an image that is 300x300 pixels, that is tagged as being
100 dpi.  Such an image is expected to be printed at a 3" x 3" size.

Now, if you want to increase the dpi to 300 dpi, what does that mean?  Does
it mean you want that same picture to be printed at a 1" x 1" size?  If so,
then all you need to change is the picture header.  It will still be
300x300 pixels, and the file will be the same number of bytes.

Or, do you mean that you want the picture to continue to print as 3" x 3",
but to have three times as many pixels in each direction?  That means you
have to increase the number of pixels to 900x900.  That's exactly what the
code above is doing.  The image file will be 9 times larger.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From deets at nospam.web.de  Wed Sep  6 10:10:07 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 06 Sep 2006 16:10:07 +0200
Subject: [ANN] IronPython 1.0 released today!
References: <mailman.38.1157488049.5279.python-list@python.org>
	<ZaALg.24347$rP1.3082@news-server.bigpond.net.au>
Message-ID: <4m835vF4narnU1@uni-berlin.de>

Chris wrote:

> Jim Hugunin wrote:
>> I'm extremely happy to announce that we have released IronPython 1.0
>> today!
>>  http://www.codeplex.com/IronPython
> 
> <snip>
> 
> I'm no code guru but it sounds interesting. So can I import numpy,
> scipy, matplotlib, wxpython etc like I do now with CPython and expect,
> short of a few tweaks, that my code will work? At work we seem to be
> doing more and more with dotNet and perhaps this is a way of bringing my
> tools into the same environment.

No, you can't. I'm not sure if there are any bridging attempts being made,
but in this respect IronPython is the same as Jython - a completely
different runtime which executes its own byte-code. 

Diez


From MonkeeSage at gmail.com  Tue Sep 12 02:04:48 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 11 Sep 2006 23:04:48 -0700
Subject: How to get the "longest possible" match with Python's RE module?
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
Message-ID: <1158041088.573901.167660@b28g2000cwb.googlegroups.com>

Licheng Fang wrote:
> Oh, please do have a look at the second link I've posted. There's a
> table comparing the regexp engines. The engines you've tested probably
> all use an NFA implementation.

Sorry! *blush* I admit I skipped over your links. I'll have a look now.

BTW, just an idea that may or may not work. What about finding all
matches that meet the absolute baseline pattern, then taking the
longest of them...something like this mabye:

def matcher(strings, pattern):
  out = ''
  reg = re.compile(pattern)
  for string in strings:
    match = reg.match(string).group()
    if (len(match) >= len(out)): # should this use > or >= ?
      out = match
  return out # empty is no matches, else longest match

p = ['dodad', 'dolittle', 'dodaday']
print matcher(p, r'do.*')
# dolittle

Just a thought...

Regards,
Jordan



From dav.phillips at ntlworld.com  Wed Sep 20 08:53:26 2006
From: dav.phillips at ntlworld.com (Fuzzydave)
Date: 20 Sep 2006 05:53:26 -0700
Subject: Nested Looping SQL Querys
Message-ID: <1158756805.995433.172680@e3g2000cwe.googlegroups.com>

I am back developing futher our Python/CGI based web application run by
a Postgres DB
and as per usual I am having some issues. It Involves a lot of Legacy
code. All the actual
SQL Querys are stored in the .py files and run in the .cgi files. I
have the problem that I
need to construct a row from two seprate SQL Querys, I have tried
combining the two
Querys but all that does is create a Query that returns nothing after a
long period running.

the first query results are delimited with [] and the second with {} I
want my result to
return [ val1 ] [ val2 ] [ val3 ] [ val4 ] { valA } { valB }
unfortunatly when i put my second
query in anywhere on the page its crashes and returns a Internal Server
Error.

the functions from the cmi file are below.



def creationSQL(pubID, productCode, description, suppNo1, all):

	validQuery=0

	if all:
		all=int(all[0])
		all = cromwell.toString(all)


	sql='SELECT S.product_code, S.description, S.suppno1,
P.discount_factor, S.status, S.list_price, S.offer_price, P.page_no,
int8(P.oid), S.stock_qty '
	sql=sql+'FROM (medusa.cmi_stockrec AS S INNER JOIN
medusa.cmi_auxstockrec AS A ON S.product_code=A.product_code) LEFT JOIN
medusa.cmi_pricing AS P ON S.product_code=P.product_code AND
P.pub_id='+pubID+' '
	sql=sql+'WHERE '


	if productCode!='':
		sql=sql+cromwell.orSQL('S.product_code', productCode, 'ILIKE \'',
'%\'', 1)+' AND '
		print '<div class="main">Product Code: <b>'+productCode+'</b></div>'
		validQuery=1
	if description!='':
		sql=sql+' (upper(S.description) LIKE upper(\'%'+description+'%\'))
AND '
		print '<div class="main">Description: <b>'+description+'</b></div>'
		validQuery=1
	if suppNo1!='':
		sql=sql+' (upper(S.suppno1) LIKE upper(\'%'+suppNo1+'%\')) AND '
		print '<div class="main">Part No: <b>'+suppNo1+'</b></div>'
		validQuery=1
	if all!=pubID:
		sql=sql+' (P.product_code IS NULL) AND '

	sql=sql[:-4]
	sql=sql+' ORDER BY S.product_code'

	print '<!-- SQL (Publication Creation):\n'
	print sql
	print '-->'

	if validQuery==1:
		return sql
	else:
		return ''

def creationPubSQL(pubID, productCode, description, suppNo1, all,
pubList, pubPageNo):

	validQuery=0

	if all:
		all=int(all[0])
		all = cromwell.toString(all)


	sql='SELECT Pl.product_code, S.description, S.suppno1,
P.discount_factor, S.status, Pl.list_price, Pl.offer_price, P.page_no,
int8(P.oid), Pl.page_no, S.stock_qty '
	sql=sql+'FROM ((medusa.cmi_pricing AS Pl INNER JOIN
medusa.cmi_stockrec AS S ON S.product_code=Pl.product_code) INNER JOIN
medusa.cmi_auxstockrec AS A ON S.product_code=A.product_code) LEFT JOIN
medusa.cmi_pricing AS P ON S.product_code=P.product_code AND
P.pub_id='+pubID+' '
	sql=sql+'WHERE Pl.pub_id='+pubList+' AND '

	if productCode!='':
		sql=sql+cromwell.orSQL('Pl.product_code', productCode, 'ILIKE \'',
'%\'', 1)+' AND '
		print '<div class="main">Product Code: <b>'+productCode+'</b></div>'
		validQuery=1
	if description!='':
		sql=sql+' (upper(S.description) LIKE upper(\'%'+description+'%\'))
AND '
		print '<div class="main">Description: <b>'+description+'</b></div>'
		validQuery=1
	if suppNo1!='':
		sql=sql+' (upper(S.suppno1) LIKE upper(\'%'+suppNo1+'%\')) AND '
		print '<div class="main">Part No: <b>'+suppNo1+'</b></div>'
		validQuery=1
	if pubPageNo!='':
		sql=sql+cromwell.orSQL('Pl.page_no', pubPageNo, '=\'', '\'', 1)+' AND
'
		print '<div class="main">Publication Page No:
<b>'+pubPageNo+'</b></div>'
		validQuery=1
	if all!=pubID:
		sql=sql+' (P.product_code IS NULL) AND '

	sql=sql[:-4]
	sql=sql+' ORDER BY Pl.product_code'

	print '<!-- SQL (Publication Creation):\n'
	print sql
	print '-->'

	if validQuery==1:
		return sql
	else:
		return ''


def stockdetailsSQL(productCode):

	validQuery=0

	sql="SELECT (stkphys - stkalloc) as free_stock, stk_qty_wk, stkalloc,
stkordq, r.fd_deliverydue "
	sql=sql+'FROM charisma.sk_stklfl LEFT JOIN
progress.report_firstdelivery as r ON stkl_stockno = r.fd_sordstk '
	sql=sql+'WHERE stkl_stockno = \''+productCode+'\' AND stkl_location =
\'081\' ORDER BY stkl_stockno'
	validQuery=1

	sql=sql[:-4]

	print '<!-- SQL (stock details):\n'
	print sql
	print '-->'


	if validQuery==1:
		return sql
	else:
		return ''


The page code for the CGI file that genereates the tables

#!/usr/bin/python

# Creation Screen
# MeDuSa - Marketing Data System

# $Id: creation.cgi 54 2006-02-16 11:32:12Z
gibsonm at CROMWELL-TOOLS.CO.UK $


print 'Content-Type: text/html\n\n'


import sys
sys.stderr = sys.stdout

from pyPgSQL import libpq
import cgi
import string
import os
import cmi
import cromwell

import hermes
conn = hermes.db()


# This will allow us to retrieve submitted form fields.
cgiForm=cgi.FieldStorage()



# Start assigning submitted form fields to variables.
submit=cgiForm.getvalue('submit')
pubID=cgiForm.getvalue('pubID')
pubName=cgiForm.getvalue('pubName','Unknown Publication')

sqlcheck1 = "SELECT pub_type FROM medusa.cmi_publication WHERE pub_id =
'"+pubID+"'"
overseas1 = conn.query(sqlcheck1)
pubType = cmi.fetch_rows(overseas1)

print pubType

# Check to find out which Search button was pressed ('Search' or
'Search ' )
# before assigning submitted form fields to variables.
if submit=='Search ':
	productCode=cromwell.unhypCode(cgiForm.getvalue('productCode2', ''))
	description=cgiForm.getvalue('description2','')
	suppNo1=cgiForm.getvalue('suppNo12', '')
	pageNo=cgiForm.getvalue('pageNo2', '')
	pubList=cgiForm.getvalue('pubList2', '800')
	pubPageNo=cgiForm.getvalue('pubPageNo2', '')

	all=cgiForm.getvalue('all2')
	if (all==None):
		all=[]
	elif not (type(all) is type([])):
		all=[all]

else:
	productCode=cromwell.unhypCode(cgiForm.getvalue('productCode', ''))
	description=cgiForm.getvalue('description','')
	suppNo1=cgiForm.getvalue('suppNo1', '')
	pageNo=cgiForm.getvalue('pageNo', '')
	pubList=cgiForm.getvalue('pubList', '800')
	pubPageNo=cgiForm.getvalue('pubPageNo', '')

	all=cgiForm.getvalue('all')
	if (all==None):
		all=[]
	elif not (type(all) is type([])):
		all=[all]



# Return list of checked product codes.
codes=cgiForm.getvalue('codes')
if (codes==None):
	codes=[]
elif not (type(codes) is type([])):
	codes=[codes]




# Perform a SELECT query to produce publication list.
result = conn.query('SELECT pub_name, pub_status, pub_id, pub_type FROM
cmi_publication WHERE (pub_status < 4) AND (pub_id > 0) ORDER BY
pub_status, pub_type, pub_name')
rows = cmi.fetch_rows(result)

pubs=[(800, 'Charisma')]


# Create a publication list array.
for row in rows:
	listPubName=row[0]
	listPubID=row[2]

	pubs.append((listPubID, listPubName))



# Start printing the HTML page.
print '<html>'
print '<head>'
print '<title>MEDUSA</title>'
print '<LINK REL ="stylesheet" TYPE="text/css"
HREF="/styles/medusa.css" TITLE="Style">'
print '</head>'

print '<body link="#000080" alink="#000080" vlink="#000080"
topmargin=0>'
print '<form method=post>'



# Produce the search form at the top of the page and the publication
title below.
banner=cmi.printCreateHeader(1, 'creation', pubID, ['ProductCode',
'Description', 'PartNo', 'All'], pubName, productCode, description,
suppNo1, pageNo, pubList, all, pubs, pubPageNo)


# If a button other than Search was pressed then perform the related
query.
add_page=cgiForm.getvalue('add_page')
if (submit=='Add') or (add_page):

	for row in codes:
		list_code=row[0:11]
		list_code = "\'" + list_code + "\'"

		sql=cmi.addSQL(pubID, list_code, add_page)
		if sql:
			conn.query(sql)



pubListTmp = int(pubList)


# Perform the SELECT query to produce the page content based on whether
a publication has been selected or not.
if (pubListTmp==800):
	sql=cmi.creationSQL(pubID, productCode, description, suppNo1, all)
else:
	sql=cmi.creationPubSQL(pubID, productCode, description, suppNo1, all,
pubList, pubPageNo)



print '</p>'

# If a valid SELECT query has been created then display the results.
if sql:

	# Execute the SELECT query.
	result = conn.query(sql)
	rows = cmi.fetch_rows(result)


	# If the query has returned any results.
	if rows:

		# Create Edit form elements.
		print '<p>Page No. <input type=text name=add_page size=5> <input
type=submit name=submit value=Add><hr></p>'


		# Print key.
		cmi.printCreateKey()


		# Print structure table.
		print '<table class=clear>'
		print '<tr>'



		# Print left hand column.
		print '<td class=clear>'

		print '<table cellpadding=3 cellspacing=1>'
		print '<tr>'

		# Print the table headers.
		print '<th>Product<br>Code</th>'
		print '<th>S</th>'
		print '<th><input type=submit name=submit value=All ></th>'
		print '<th>Description</th>'
		print '<th>Supp.<br>Part No.</th>'
		print '<th>Charisma<br>List</th>'
		#print '<th>Charisma<br>Offer</th>'
		print '<th>Last Cat<br>Discount</th>'
		print '<th>Page<br>No</th>'
		if (pubListTmp!=800):
			print '<th>Pub<br>Page</th>'
		print '<th>Stock Qty<br>Loc 81</th>'

		print '</tr>'

		matched=0
		lastGroup=''


		# Loop to print one line for each return from the database.
		for row in rows:


			# Assign the column values to named variables.
			productCode=row[0]
			description=row[1]
			suppNo1=cromwell.notNone(row[2], '')
			discount=row[3]
			if discount==None:
				discount='0'
			else:
				discount=cromwell.percentage(discount)
			status=cromwell.notNone(row[4], '')
			charList=cromwell.price(row[5], pubType)
			charOffer=cromwell.price(row[6], pubType)
			pageNo=cromwell.toString(row[7])
			oid=cromwell.toString(row[8])
			if (pubListTmp!=800):
				pubPage=cromwell.toString(row[9])
				stock=cromwell.toString(row[10])
			else:
				stock=cromwell.toString(row[9])



			# Display a seperator between groups of product codes.
			if lastGroup!=productCode[:6]:
				if lastGroup!='':
					print '<tr height=3><th colspan=8></th></tr>'
				lastGroup=productCode[:6]



			print '<tr>'

			# Print a table row.
			print '<td class='+cmi.pageStatusClass(pageNo, status)+'
align=left><a href="#"
onclick=\'javascript:window.open("http://ecatalogue.cromwell-tools.co.uk/details.php?product_code='+productCode+'&location=81","","scrollbars=yes,resizable=Yes,width=650,height=800")\'><b>'+cromwell.hypCode(productCode)+'</b></a></td>'
			print '<td class='+cmi.pageStatusClass(pageNo, status)+'
align=left>'+status+'</td>'
			print '<td class='+cmi.pageClass(pageNo)+' align=center><input
type=checkbox name=codes value='
			print productCode+' '
			if (cgiForm.getvalue('submit')=='All') or (productCode in codes):
				print ' CHECKED',
			print '></td>'
			print '<td class='+cmi.pageClass(pageNo)+'
align=left>'+description+'</td>'
			print '<td class='+cmi.pageClass(pageNo)+'
align=left>'+suppNo1+'</td>'
			print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+charList+'</td>'
			#print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+charOffer+'</td>'
			print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+discount+'%</td>'
			print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+pageNo+'</td>'
			if (pubListTmp!=800):
				print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+pubPage+'</td>'

###################################################
#
#     This is the section that generates the second sql string
#
####################################################


			#sqlS=cmi.stockdetailsSQL(productCode)
			#print sqlS
			#rowsS = cmi.fetch_rows(sqlS)
				for rowS in rowsS:
			#			freestock=cromwell.toString(rowS[0])
			#			stkqweeks=cromwell.toString(rowS[1])
			#			allocated=cromwell.toString(rowS[2])
			#			stkorderq=cromwell.toString(rowS[3])
			#			orderdate=cromwell.toString(rowS[4])

			#			print ''+freestock+''
			#			print ''+stkqweeks+''
			#			print ''+allocated+''
			#			print ''+stkorderq+''
			#			print ''+orderdate+''

			#print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+freestock+'</td>'
			#print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+stkqweeks+'</td>'
			#print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+allocated+'</td>'
			#print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+stkorderq+'</td>'
			#print '<td class='+cmi.pageClass(pageNo)+'
align=right>'+orderdate+'</td>'

			print '</tr>'

			matched=matched+1

		print '</table>'

		print '<p><b>'+`matched`+'</b> items found</p>'


		# End left hand column.
		print '</td>'


		# Print spacer column.
		print '<td class=clear width=50>&nbsp</td>'


		# Print right hand column.
		print '<td class=clear valign=top>'

		print '<b>Just added:</b><br>'
		for code in codes:
			print '&nbsp'*5, code, '<br>'

		# End right hand column.
		print '</td>'
		print '</tr>'



		# Close the table.
		print '</table>'



	# If no results are returned by the query.
	else:
		print '<p align="center"><font color=red><b>No items
found</b></font></p>'




# If a valid query has not been created (No search details entered).
else:

	print '<table width="100%" height="500"
class="clear"><tr><td><h1>Creation Page</h1></td></tr></table>'



# Close HTML tags.
print '</form>'
print '</body>'
print '</html>'



From rzantow at gmail.com  Sat Sep  2 14:08:43 2006
From: rzantow at gmail.com (Rick Zantow)
Date: Sat, 02 Sep 2006 14:08:43 -0400
Subject: How to run Python file?
References: <1157205463.043880.67340@m79g2000cwm.googlegroups.com>
	<pan.2006.09.02.15.34.21.458976@users.sf.net>
	<edcc3k$em0$1@inews.gazeta.pl>
	<1157218244.750434.36220@h48g2000cwc.googlegroups.com>
Message-ID: <Xns98328FE567381rzed@208.49.80.253>

"Ant" <antroy at gmail.com> wrote in news:1157218244.750434.36220
@h48g2000cwc.googlegroups.com:

> 
> zefciu wrote:
>> Pontus Ekberg wrote:
> ...
>> > $ python test.py
>> >
>> > or
>> >
>> > $ ./test.py (if test.py is executable)
>> >
>> >
>> Thats if you use un*x.  If you word under windows, the first would 
work,
> 
> As would:
> 
>> test.py
> 
> Assuming python grabbed the .py extensions correctly (which it shouold
> have done with any recent version).
> 
> 

As would:

> test

... assuming you're on windows (Win2K or WinXP at least) and you've 
added ".py" to your PATHEXT environment variable.

-- 
rzed


From fredrik at pythonware.com  Tue Sep 19 11:57:13 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 19 Sep 2006 17:57:13 +0200
Subject: newlines and sax.saxutils.quoteattr
In-Reply-To: <JLTPg.347$2N.307@newsfe02.lga>
References: <JLTPg.347$2N.307@newsfe02.lga>
Message-ID: <eep40p$fmg$1@sea.gmane.org>

Edward K. Ream wrote:

> - Does anyone know whether this is guaranteed to be a general solution? That 
> is, are sax parsers *obliged* to ignore newlines in attributes?

     http://www.w3.org/TR/REC-xml/#AVNormalize

> - If sax parsers are indeed obliged to ignore newlines in attributes, would 
> it be a good idea to (optionally?) have sax.saxutils.quoteattr perform the 
> substitution of newlines to '&#10;\n' ?

perhaps.  a really good idea would be store free-format text in 
elements, not attributes, but I guess it's too late to fix OPML.

</F>



From damian at nice.co.nz  Wed Sep 27 19:40:18 2006
From: damian at nice.co.nz (Damian)
Date: 27 Sep 2006 16:40:18 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159395309.166081.23130@m7g2000cwm.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
Message-ID: <1159400418.491887.125240@m7g2000cwm.googlegroups.com>

Ross Ridge wrote:
> It could just be that 4suite is slower than MSXML.  If so, you can use
> MSXML in Python if you want.  You'll need to install the Python for
> Windows extensions.  Something like this:

Thanks for that Ross. That would make sense, I'd read somewhere that
the 4suite code was a little slower but wanted to be sure it wasn't
just something I'd done wrong.

I've experimented with the code you supplied and after installing the
necessaries have run into a brick wall with a series of errors.

The errors can be seen at http://python.pointy.co.nz/test (I'm leaving
the existing, slower version running at the moment for the rest of the
site).

I've got to get back on with some work but will look further into this
tonight.

Thanks for your help! I really appreciate it.



From jaysherby at gmail.com  Fri Sep 15 22:03:11 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 19:03:11 -0700
Subject: mp3 libs and programs
In-Reply-To: <1158371906.298866.118100@p79g2000cwp.googlegroups.com>
References: <1158369401.262011.256700@b28g2000cwb.googlegroups.com>
	<1158371633.640428.313040@m73g2000cwd.googlegroups.com>
	<1158371906.298866.118100@p79g2000cwp.googlegroups.com>
Message-ID: <1158372191.820213.319190@i3g2000cwc.googlegroups.com>

I checked it and I can most definitely do the seeking from the command
line with mplayer.  Can I use slave mode with python?


Jay wrote:
> That's definately a good choice, but what about mplayer in slave mode?
> Can I use that with python?  Would that be able to seek?
>
>
> Harold Fellermann wrote:
> > hi,
> >
> > Jay wrote:
> > > I'm writing a python script that involves playing mp3 files.  The first
> > > approach I had was sending commands to unix command-line programs in
> > > order to play them.  I tired mpg123 and moosic, but there was a key
> > > feature to my program's success that's missing.  SEEK!  I need to be
> > > able to start playing a song at an arbitrary point in the song.  I
> > > can't find anything to let me do this.  Does anyone have any advice or
> > > has anyone needed something similar?
> > 
> > check out pyxmms.



From cvanarsdall at mvista.com  Tue Sep 12 18:12:20 2006
From: cvanarsdall at mvista.com (Carl J. Van Arsdall)
Date: Tue, 12 Sep 2006 15:12:20 -0700
Subject: Help me use my Dual Core CPU!
In-Reply-To: <28ljt3-tcq.ln1@lairds.us>
References: <mailman.348.1158066516.5279.python-list@python.org>
	<28ljt3-tcq.ln1@lairds.us>
Message-ID: <450730C4.8020408@mvista.com>

Cameron Laird wrote:
> In article <mailman.348.1158066516.5279.python-list at python.org>,
> Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
> 			.
> 			.
> 			.
>   
>> | I know threads won't help (in CPython at least) so I'm investigating
>> | other types of concurrency which I might be able to use. I really like
>> | the PyLinda approach
>>
>> I find it very elegant. I only wish I had some real-world use for it!
>>     
> 			.
> 			.
> 			.
> Me, too.  I'd love to talk over Linda with other aficionados,
> and/or hunt together for an excuse to use her/it.
>   
Funny you should mention that.  I've had PyLinda opened in firefox for a 
couple days waiting to be read about.  I have a large distributed system 
I'm hoping to use PyLinda for, or at least I hope PyLinda will help me with.

-c



-- 

Carl J. Van Arsdall
cvanarsdall at mvista.com
Build and Release
MontaVista Software



From aisaac0 at verizon.net  Wed Sep  6 22:10:53 2006
From: aisaac0 at verizon.net (David Isaac)
Date: Thu, 07 Sep 2006 02:10:53 GMT
Subject: change property after inheritance
References: <V_ALg.10274$YZ3.7565@trnddc03>
	<mailman.82.1157557490.5279.python-list@python.org>
Message-ID: <NcLLg.27806$CL6.8934@trnddc06>


Le mercredi 06 septembre 2006 16:33,  Alan Isaac a ?crit :
>> Suppose a class has properties and I want to change the
>> setter in a derived class. If the base class is mine, I can do this:
>> http://www.kylev.com/2004/10/13/fun-with-python-properties/
>> Should I? (I.e., is that a good solution?)

"Maric Michaud" <maric at aristote.info> wrote in message
news:mailman.82.1157557490.5279.python-list at python.org...
> Why not ? This ontroduce the notion of public getter a la C++/Java while
the
> property is overloadable by itself (as below), but it's correct design
IMHO.

More support for lambda, it seems...
Cheers,
Alan Isaac




From python.list at tim.thechases.com  Fri Sep 15 15:30:18 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 15 Sep 2006 14:30:18 -0500
Subject: REQ: Java/J2EE Developer 10 Months
In-Reply-To: <450AF3F0.5020808@holdenweb.com>
References: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>
	<450AF3F0.5020808@holdenweb.com>
Message-ID: <450AFF4A.6080609@tim.thechases.com>

>> *Java, 2 year UNIX - HP / Solaris, 2 yrs OOA+D, Corba, Perl,
>> XML, UML. *Java dev experience, Swing, JPS, 2 years of
>> OOA+D.
> 
> Clearly not spam, since the guy is so in touch with the
> readership of this group ... sigh ... is it just me, or is
> this person an idiot?

Perhaps this is an acknowledgment that any Tom, Dick or Harry 
armed with Python has the equiv. skills of someone with the above 
credentials.  Paraphrasing, "you can either have N years of skill 
with complicated toolsets X, Y, and Z, or you can know how to do 
it the easy way with Python."

Or, as you say, someone needs to send the OP a copy of 
_Recruiting for Dummies_ along with _How not to Crosspost for Idiots_

Or, perhaps they just have their terminology off.  "Corba" is a 
lot like "cobra" which is also a snake, like a Python.  ("We've 
got Corba, right here in River City.  That starts with 'C' and 
that rhymes with 'P' and that stands for Python!")

I've gotta stop with the musicals... :)

-tkc





From fredrik at pythonware.com  Mon Sep 25 10:31:14 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 25 Sep 2006 16:31:14 +0200
Subject: unicode, bytes redux
References: <mailman.552.1159166294.10491.python-list@python.org><1159173488.326443.245730@d34g2000cwd.googlegroups.com><mailman.564.1159191065.10491.python-list@python.org>
	<1159193492.302375.164180@m73g2000cwd.googlegroups.com>
Message-ID: <ef8p7i$7c4$1@sea.gmane.org>

John Machin wrote:
>> > So all he needs is a boolean result: u.willitfit(encoding, width)
>>
>> at what point in the program would that method be used ?
>
> Never, I hope. Were you taking that as a serious suggestion? Fredrik,
> perhaps your irony detector needs a little preventative maintenance :-)

well, Willie did ask for something like that, didn't he ?  I'm just gathering
requirements...

>> how large are the strings, for typical cases ?
>
> He did mention it several posts ago -- I recall varchar(50) or
> something like that.

ok.  wake me up when he's dealing with columns defined as
varchar(50000000) or so...

</F> 





From tdelaney at avaya.com  Wed Sep 27 18:08:27 2006
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Thu, 28 Sep 2006 08:08:27 +1000
Subject: productivity and long computing delays
Message-ID: <2773CAC687FD5F4689F526998C7E4E5F074411@au3010avexu1.global.avaya.com>

Paul Rubin wrote:

> Anyone got any suggestions?  How do you deal with this?  It could be
> mitigated with a faster computer (I'm using a 1.2 ghz Pentium M) but
> the overall task isn't large enough to justify going out and buying
> one.  Anyway, I did the same build on a 2 ghz Athlon 64 and was
> surprised that the speedup was only 35% or so.  I'd have to get a
> multiprocessor box to obtain really substantial gains.

Sounds like a typical time/money tradeoff to me. How much is your time
worth to you on this project? If you can reduce the delay by 50%, and do
it 10 times, you could well pay for a new Core 2 Duo machine.

As an alternative, do you have multiple machines you could use? Perhaps
you could use distributed compilation.

Tim Delaney


From metaperl at gmail.com  Fri Sep 29 03:45:55 2006
From: metaperl at gmail.com (metaperl)
Date: 29 Sep 2006 00:45:55 -0700
Subject: for: else: - any practical uses for the else clause?
In-Reply-To: <efc590$2h08$1@talisker.lacave.net>
References: <1159304388.430047.128670@e3g2000cwe.googlegroups.com>
	<efc590$2h08$1@talisker.lacave.net>
Message-ID: <1159515955.553244.74480@i3g2000cwc.googlegroups.com>

Actually right after posting this I came up with a great usage. I use
meld3 for my Python based dynamic HTML generation. Whenever I plan to
loop over a tree section I use a for loop, but if there is no data to
iterate over, then I simply remove that section from the tree or
populate it with a "no data" message.



From Adrian.Neagu at nuance.com  Wed Sep 20 08:06:08 2006
From: Adrian.Neagu at nuance.com (Neagu, Adrian)
Date: Wed, 20 Sep 2006 08:06:08 -0400
Subject: How to measure memory footprint of Python objects?
Message-ID: <469735C9CA632F45B1A3E20035C60EEE040D902E@gh-exch1.eu.scansoft.com>

Hello everybody,

I try to solve the following problem: I have a python program that takes a
lot of memory (>hundred Mb). I made an improvement (I hope) and I want to
measure the gain (if possible on several platforms). I would like to be able
to print the max memory taken during the run upon exiting my Python program
(like I already do for the time taken to run).

I can see the total process size of the Python process (Task manager on MS
Win or Unix "ps" command) but that is not precise enough for me and also not
convenient. I don't care about the python interpreter overhead, I'm
interested only in the total size of Python objects allocated by my program.
Is there a Python way to get that (meaning without resorting to
non-portable, less precise OS features)? 
 
I would like to get that size at different given moments in time to make up
a timeline of memory consumption. But, if that is too tricky, I would be
happy to just get the maximum.

Any suggestion welcome,
Adrian.


From tim.golden at viacom-outdoor.co.uk  Tue Sep 12 08:15:03 2006
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 12 Sep 2006 13:15:03 +0100
Subject: Get CPU usage of a single process in Windows
Message-ID: <CCAC78D42E32184F8E26DC163DB98306C1B432@vogbs009.gb.vo.local>

[Gerrit Muller]

| If you have a working example of CPU usage could you post the 
| result? I would be interested.

OK. Here's a workingish example, cut down from the link
I posted earlier. This one was designed to work with Win2K
which I was using at the time. For WinXP and later, there's
a new counter with the ungainly name of 

Win32_PerfFormattedData_PerfProc_Process

which should give you the number straight off without having
to do the take-and-diff-and-divide dance. However, it doesn't
seem to do anything useful on my (XP) system. Haven't tried
that hard, I admit.

As ever, if you can find any example around the Web -- and there
are loads -- converting it to Python should be a breeze.

TJG

<code>
import time
import wmi

c = wmi.WMI ()

process_info = {}
while True:
  for process in c.Win32_Process ():
    id = process.ProcessID
    for p in c.Win32_PerfRawData_PerfProc_Process (IDProcess=id):
      n1, d1 = long (p.PercentProcessorTime), long
(p.Timestamp_Sys100NS)
      n0, d0 = process_info.get (id, (0, 0))

      try:
        percent_processor_time = (float (n1 - n0) / float (d1 - d0)) *
100.0
      except ZeroDivisionError:
        percent_processor_time = 0.0
      process_info[id] = (n1, d1)
      
      if percent_processor_time > 0.01:
        print "%20s - %2.3f" % (process.Caption, percent_processor_time)

  print
  time.sleep (5)

</code>

________________________________________________________________________
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From ndbecker2 at gmail.com  Tue Sep  5 21:06:04 2006
From: ndbecker2 at gmail.com (Neal Becker)
Date: Tue, 05 Sep 2006 21:06:04 -0400
Subject: [ANN] IronPython 1.0 released today!
References: <B5F2A8845315C94E838A0901C3A036B92D99513D2B@DF-GRTDANE-MSG.exchange.corp.microsoft.com>
Message-ID: <edl6us$360$1@sea.gmane.org>

Will it run with mono?



From riklaunim at gmail.com  Sun Sep 10 20:01:42 2006
From: riklaunim at gmail.com (riklaunim at gmail.com)
Date: 10 Sep 2006 17:01:42 -0700
Subject: ANN: Pocoo (bulletin board software) 0.1 beta released
In-Reply-To: <ee23mt$hd8$2@news.albasani.net>
References: <ee23mt$hd8$2@news.albasani.net>
Message-ID: <1157932902.758731.90950@q16g2000cwq.googlegroups.com>


Georg Brandl wrote:
> We're pleased to announce that
>
>       Pocoo 0.1 (beta) was released today (Sept. 10, 2006).
>
> Pocoo <http://www.pocoo.org/> is a bulletin board software (aka. message board)
> written in Python, adhering to the WSGI standard. In the long term, it is meant
> to compete with systems like phpBB.
>

Python needs good forums :) I'm writing my own forum app also, called
"MyghtyBoard" - http://code.google.com/p/diamanda/ using Django :)
[check the screenshots].

python isn't PHP -> most python powered sites use a framework (from
zope to web.py) so it would nice if the script could be easily "plugged
in" to popular python frameworks (users, permissions, forum data) :)



From this at is.invalid  Thu Sep  7 15:05:10 2006
From: this at is.invalid (ddtl)
Date: Thu, 07 Sep 2006 21:05:10 +0200
Subject: Method resolution for super(Class, obj).
References: <49h0g2t0rni9mk4gs3o8baqgr66q1847es@4ax.com>
	<1157650974.472127.47470@h48g2000cwc.googlegroups.com>
Message-ID: <var0g2phcfvru0jtf9jjcinaettiocib05@4ax.com>

On 7 Sep 2006 10:42:54 -0700, in comp.lang.python you wrote:

>Let's examine what the mro order is for class D:
>>>> D.mro()
>[<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>,
><class '__mai
>n__.A'>, <type 'object'>]
>
>When you call d.met(), the call dispatches to the D.met() method.
>After printing out 'D.met', you use super() to get the next class in
>the mro order, and call that class's met method.
>
>As shown with the mro(), the class after D is B.  So B.met() is called.
> Normally, we would be done.  But take a look at B's method!
>
>> class B(A):
>>     def met(self):
>>         print 'B.met'
>>         super(B,self).met()
>
>B.met calls super, and invokes the next met method!  So, the code does
>exactly what you've asked it to do, and searches for the next class
>after B in the mro list: class C.

But when super(B,self).met() is invoked, isn't it supposed to look
at MRO order of *B*, which is:

(<class '__main__.B'>, <class '__main__.A'>, <type 'object'>)

and B doesn't have any relation with C, that is: A's met() is the to
be called as a result. In effect, what you say impies that a call to
super() is context dependant - if super(B,self).met() is invoked as
a result of a call to D().met(), the effect is different from the effect 
of a call to B().met(). But a documentation of a super() doesn't mention
anything like that (or at least I didn't find it), and it seems a 
significant piece of information. Doesn't it imply that there should 
be another explanation?

ddtl.


From ldo at geek-central.gen.new_zealand  Tue Sep 26 06:45:58 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 22:45:58 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8d06$fui$5@lust.ihug.co.nz>
	<Xns98498D79318AFduncanbooth@127.0.0.1>
	<efapj7$rfd$2@lust.ihug.co.nz>
	<Xns984A6E99A1A73duncanbooth@127.0.0.1>
Message-ID: <efb0bk$8e5$1@lust.ihug.co.nz>

In message <Xns984A6E99A1A73duncanbooth at 127.0.0.1>, Duncan Booth wrote:

> However, your QuoteSQL messes up every time because it wraps double
> quotes round the whole string, so it isn't suitable for use with
> parameterised queries at all. If you care to modify it to work in that
> situation I think you'll find that the only characters you need to quote
> are \, % and _.

That won't work--that puts you into stupid mistake number 2.

I think autoquoting is fine as far as it goes. But it cannot cope with
wildcards, since it can't tell whether the string is being used in a LIKE
clause without doing its own parsing of the MySQL query. And there are
situations where you cannot rely on it, as in the QuoteSQLList example I
gave earlier. This is why my QuoteSQL function cannot be designed to work
together with autoquoting, but has to be used as a complete replacement for
it.

> In particular it currently turns newlines in backslash followed by n which
> (since MySQL ignores the extra backslash escape) is equivalent to turning
> newlines into the character n.

But \n is valid MySQL syntax for a newline.


From steve at holdenweb.com  Wed Sep  6 03:46:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 08:46:51 +0100
Subject: threading support in python
In-Reply-To: <1157526559.277945.58530@m73g2000cwd.googlegroups.com>
References: <4klub9Fcqv5kU1@individual.net>	<1155932094.617287.84980@i3g2000cwc.googlegroups.com>	<1155933754.114724.250180@i3g2000cwc.googlegroups.com>	<gTqFg.16305$o27.3834@newssvr21.news.prodigy.com>	<4knq9hFctlsuU1@individual.net>	<1156001501.741149.162810@h48g2000cwc.googlegroups.com>	<PsJFg.66833$u11.21481@tornado.ohiordc.rr.com>	<1157214620.847062.68090@b28g2000cwb.googlegroups.com>	<1157409631.751524.99560@b28g2000cwb.googlegroups.com>	<1157469825.184895.176080@d34g2000cwd.googlegroups.com>	<7xbqptdeeo.fsf@ruckus.brouhaha.com>
	<1157526559.277945.58530@m73g2000cwd.googlegroups.com>
Message-ID: <edluc8$r4a$3@sea.gmane.org>

sjdevnull at yahoo.com wrote:
> Paul Rubin wrote:
> 
>>"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
>>
>>>Having memory protection is superior to not having it--OS designers
>>>spent years implementing it, why would you toss out a fair chunk of it?
>>> Being explicit about what you're sharing is generally better than not.
>>
>>Part of the win of programming in Python instead of C is having the
>>language do memory management for you--no more null pointers
>>dereferences or malloc/free errors.  Using shared memory puts all that
>>squarely back in your lap.
> 
> 
> Huh?  Why couldn't you use garbage collection with objects allocated in
> shm?  The worst theoretical case is about the same programatically as
> having garbage collected objects in a multithreaded program.
> 
> Python doesn't actually support that as of yet, but it could.  In the
> interim, if the memory you're sharing is array-like then you can
> already take full advantage of multiprocess solutions in Python.
> 
Ah, right. So then we end up with processes that have to suspend because 
they can't collect garbage? "Could" covers a multitude of sins, and 
distributed garbage collection across shard memory is by no means a 
trivial problem.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From walton.dan at gmail.com  Mon Sep  4 22:03:09 2006
From: walton.dan at gmail.com (Daniel Walton)
Date: Mon, 4 Sep 2006 19:03:09 -0700
Subject: asyncore.dispatcher stops listening
Message-ID: <dda874450609041903r5fa4c9c2gd75bcb3bb87af45e@mail.gmail.com>

I have been working on a problem for a full week now.  If someone
could please help me it would be great.  Even a clue would be great at
this point.  What I am seeing is quite a mystery.

I have server written in python using asyncore.dispatcher.  It listens
on port 9940 and does something like this on handle_accept

    def handle_accept (self):
        self.log("accept")
        conn, addr = self.accept()
        self.handlers += [asynchat.async_chat_subclass(conn,addr)]

I launch the server and test the server.  Everything looks great aside
from a few functions that are a bit slow.

The server goes into use and receives some traffic for about 3 days
and then it stops listening.  telneting to the port times out.
clients (8 or so) that are connected time out.  The process is still
running.  Its not taking lots of CPU or memory.  I can start a new
server on the port without being told that something else is using it.

When I send the server a kill -SIGINT  I get this call stack in the log
Traceback (most recent call last):
  File "./link_server.py", line 975, in ?
    main(sys.argv)
  File "./link_server.py", line 973, in main
    asyncore.loop()
  File "/usr/local/lib/python2.4/asyncore.py", line 192, in loop
    poll_fun(timeout, map)
  File "/usr/local/lib/python2.4/asyncore.py", line 122, in poll
    r, w, e = select.select(r, w, e, timeout)
KeyboardInterrupt

The only other detail that might be interesting is that I am starting
the server with a
nohup some_server.py > log &

What would cause a socket to quit listening?  Any clue,
ideas,techniques, or experiences at all would be really helpful.

Thank you all very very much.
dan


From george.sakkis at gmail.com  Thu Sep  7 18:40:14 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 7 Sep 2006 15:40:14 -0700
Subject: Refactor a buffered class...
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>
	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>
	<1157570766.122071.27250@h48g2000cwc.googlegroups.com>
	<mailman.98.1157578665.5279.python-list@python.org>
	<1157599243.076703.180740@p79g2000cwp.googlegroups.com>
	<mailman.110.1157604877.5279.python-list@python.org>
	<1157638136.370020.289690@b28g2000cwb.googlegroups.com>
	<mailman.135.1157658867.5279.python-list@python.org>
Message-ID: <1157668814.689750.299500@b28g2000cwb.googlegroups.com>

Michael Spencer wrote:

> I think the two versions below each give the 'correct' output wrt to the OP's
> single test case.  I measure chunkerMS2 to be faster than chunkerGS2 across all
> chunk sizes, but this is all about the joins.
>
> I conclude that chunkerGS's deque beats chunkerMS's list for large chunk_size (~
>  >100).  But for joined output, chunkerMS2 beats chunkerGS2 because it does less
> joining.

Although I speculate that the OP is really concerned about the chunking
algorithm rather than an exact output format, chunkerGS2 can do better
even when the chunks must be joined. Joining each chunk can (and
should) be done only once, not every time the chunk is yielded.
chunkerGS3 outperforms chunkerMS2 even more than the original versions:

* chunk_size=3
chunkerGS3: 1.17 seconds
chunkerMS2: 1.56 seconds
* chunk_size=30
chunkerGS3: 1.26 seconds
chunkerMS2: 6.35 seconds
* chunk_size=300
chunkerGS3: 2.20 seconds
chunkerMS2: 54.51 seconds


def chunkerGS3(seq, sentry='.', chunk_size=3, keep_first=False,
keep_last=False):
     iterchunks = itersplit(seq,sentry)
     buf = deque()
     join = ' '.join
     def append(chunk):
         chunk.append(sentry)
         buf.append(join(chunk))
     for chunk in islice(iterchunks, chunk_size-1):
         append(chunk)
         if keep_first:
             yield join(buf)
     for chunk in iterchunks:
         append(chunk)
         yield join(buf)
         buf.popleft()
     if keep_last:
         while buf:
             yield join(buf)
             buf.popleft()


>  > if you're going to profile something, better use the
>  > standard timeit module
> ...
> OT: I will when timeit grows a capability for testing live objects rather than
> 'small code snippets'.  Requiring source code input and passing arguments by
> string substitution makes it too painful for interactive work.  The need to
> specify the number of repeats is an additional annoyance.

timeit is indeed somewhat cumbersome, but having a robust bug-free
timing function is worth the inconvenience IMO.

Best,
George



From __peter__ at web.de  Wed Sep 20 02:10:15 2006
From: __peter__ at web.de (Peter Otten)
Date: Wed, 20 Sep 2006 08:10:15 +0200
Subject: how to control file output encoding?
References: <mailman.309.1158728115.10491.python-list@python.org>
Message-ID: <eeqlth$pjr$00$1@news.t-online.com>

MaTianyi wrote:

> the encoding of  file that is output by the file.write() function  is
> always None.
> and the encoding attribute of the File Object is readonly.
> 
> f = open('abc.txt','w')
> print f.encoding
>  >>> None
> 
> how can I change the file output encoding?

Have a look a the codecs module. codecs.open() will do the job.

http://docs.python.org/dev/lib/module-codecs.html

Peter


From theaney at gmail.com  Sun Sep 17 10:05:05 2006
From: theaney at gmail.com (Tim Heaney)
Date: Sun, 17 Sep 2006 10:05:05 -0400
Subject: matplotlib: TypeError: a float is required
References: <eejesq$guv$1@online.de>
Message-ID: <m3mz8yzizy.fsf@calvin.watterson>

Andi Clemens <andi.clemens at gmx.net> writes:
>
> everytime I try to plot a bar with matplotlib I get the following
> error message:
> Traceback (most recent call last):
>   File "bar_stacked.py", line 13, in ?
>     p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd)
>   File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line
> 1641, in bar
>     ret =  gca().bar(*args, **kwargs)
>   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line
> 2485, in bar
>     xerr = asarray([xerr]*nbars, Float)
>   File "/usr/lib/python2.4/site-packages/Numeric/Numeric.py", line
> 134, in asarray
>     return multiarray.array(a, typecode, copy=0, savespace=savespace)
> TypeError: a float is required
>
>
> So I guess it has something to do with Numeric.py, but I can't figure
> out what the problem is. I tried to google but found nothing...
>
> Anyone has the same problem? I can plot all kinds of graphics with
> matplotlib, but the only type I'm interested in (bars) will not
> work.

It looks like it doesn't like not having xerr set. The documentation
says 

  xerr and yerr, if not None, will be used to generate errorbars on
  the bar chart

implying that if they are None (the default), then no errorbars will
be generated. But that doesn't seem to be the case. When I add an xerr
to both p1 and p2

  p1 = bar(ind, menMeans,   width, color='r', yerr=womenStd,
           xerr=zeros(N))
  p2 = bar(ind, womenMeans, width, color='y',
           bottom=menMeans, yerr=menStd, xerr=zeros(N))

I get the following bar chart

  http://img176.imageshack.us/my.php?image=imagenx6.png

with no errors.

Tim


From malkarouri at gmail.com  Wed Sep 27 15:46:53 2006
From: malkarouri at gmail.com (malkarouri at gmail.com)
Date: 27 Sep 2006 12:46:53 -0700
Subject: identifying new not inherited methods
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
	<1159290259.031941.315720@e3g2000cwe.googlegroups.com>
	<1159291365.772556.212200@i3g2000cwc.googlegroups.com>
Message-ID: <1159386413.293290.115510@m73g2000cwd.googlegroups.com>

George Sakkis wrote:
[...]
> You're looking at it backwards; there's no particular reason this
> should be a method of class A since it can be used for any arbitrary
> object with no extra overhead. Now, if you intend to use it only for
> instances of A and its subclasses, the only difference would be
> syntactic; if you prefer x.list_cmds() from list_cmds(x), go with the
> method.

You are right of course. Let's say it's just bad company; the group I
am working with are mainly Java developers.

k



From gagsl-py at yahoo.com.ar  Thu Sep 28 00:55:19 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 01:55:19 -0300
Subject: Computer Language Popularity Trend
In-Reply-To: <1159375876.352551.22600@m7g2000cwm.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159359326.496431.293370@i3g2000cwc.googlegroups.com>
	<1159375876.352551.22600@m7g2000cwm.googlegroups.com>
Message-ID: <7.0.1.0.0.20060928015256.05667010@yahoo.com.ar>

At Wednesday 27/9/2006 13:51, sjdevnull at yahoo.com wrote:

> > You can also get a rough measure ot the popularity of web scripting
> > languages from an analysis of the URLs. The last time I did this was in
> > 2003, and as I recall, these were the results:
> > PHP 30% and increasing
> > Perl 28% and falling
> > ASP 25% and falling fast
> > ColdFusion 6% and steady
> > Java and JSP 5% and increasing
> > others, Python, Ruby, ...
>
>At the site I'm working on, you'd see a URL like
>http://www.whatever.com/login or http://www.whatever.com/boards?id=131
>-- how would you count them?  Such (extensionless) URLs are far more
>common in the Python, Ruby, and Java world in my experience than the
>PHP, Perl, and ASP world, so my first instinct looking at your numbers
>is to believe they're just biased toward languages that more often put
>the extension in the URL.

Same thing with me, using Zope.
The scripting language or machinery used is an implementation detail, 
so it should not appear on a URL, if you want them to be more or less 
permanents.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From jstroud at mbi.ucla.edu  Fri Sep 22 05:35:04 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 22 Sep 2006 09:35:04 GMT
Subject: Building things with setup.py
In-Reply-To: <mailman.438.1158898433.10491.python-list@python.org>
References: <7YHQg.4147$6S3.2437@newssvr25.news.prodigy.net>	<mailman.437.1158894908.10491.python-list@python.org>	<_0JQg.4161$6S3.2010@newssvr25.news.prodigy.net>
	<mailman.438.1158898433.10491.python-list@python.org>
Message-ID: <c7OQg.4224$6S3.1571@newssvr25.news.prodigy.net>

Robert Kern wrote:
> James Stroud wrote:
>> I did build my own python 2.5, yesterday, requiring me to rebuild all 
>> extensions.
> 
> Do other extensions build correctly? If so, it's beginning to look like 
> a problem in numpy.distutils .

It seems that every thing has built without incident (numarray, numeric, 
mxtexttools, pil, reportlab, just to name a few), with the exception, 
strangely enough, of python2.5 itself. Python required hiding previous 
python installations.

>> Everything I do is compiled by hand as joe-user. I'm in a situation 
>> where I can't do RPM (and I don't have root on my work machine 
>> (theoretically ;-)) so, to be a good joe-user, everything I add goes 
>> into the prefix:
>>
>> $HOME/Programs
>>
>> This is the listing from $HOME/Programs/lib/python2.5/config:
>>
>> euler 6% ls
>> total 4092
>>     8 config.c       12 install-sh*       44 Makefile       8 python.o 
>>     8 Setup.config
>>     8 config.c.in  3960 libpython2.5.a    12 makesetup*    24 Setup 
>>     8 Setup.local
>>
>> The build process, by the way, required my copying libpython2.5.a to 
>> $HOME/Programs/lib.
> 
> Hmm. That doesn't quite sound right, but it's been a while since I 
> compiled the interpreter from source.

Sorry. To clarify, making libpython2.5a available in a $LD_LIBRARY_PATH 
was necessary to build numpy and scipy.

>> The text files Setup.config and Setup.local do not seem to have 
>> terribly specific information in them. Which file in particular should 
>> I inspect?
> 
> Makefile has most of that information. You can verify that distutils is 
> finding it like so:
> 
>  >>> from distutils import sysconfig
>  >>> sysconfig.get_makefile_filename()
> '/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/config/Makefile' 
> 
>  >>> d = sysconfig.parse_makefile(_)
>  >>> import pprint
>  >>> pprint.pprint(d)
> {'AR': 'ar',
>  ...
> }

This output from the check is here:
http://www.jamesstroud.com/build-scipy-logs/distutil-check.txt

I'm not sure if this is relevant to what you see in the check, but I 
installed scipy_distutils AFTER installing scipy.

>> I did not capture output from the build and I could not find a file 
>> with the word "log" in it that appears to be a build log. The jist of 
>> the problem is that first it can't find symbols from libpython2.5, 
>> then from   libthread, etc. Then, it complains about no "MAIN__" when 
>> linking the .so files with g77 and no "main" with gcc (which is 
>> curious), so I must include the -shared flag, after including 
>> -llibrary type flags for all of the libraries it doesn't know about.
> 
> What versions of gcc and g77 are you using?

euler 2% g77 -v
Reading specs from 
/auto_nfs/data10/users/jstroud/Programs/bin/../lib/gcc/i686-pc-linux-gnu/3.4.2/specs
Configured with: ./configure --prefix=/data1/users/jstroud/Programs : 
(reconfigured) ./configure --prefix=/data1/users/jstroud/Programs
Thread model: posix
gcc version 3.4.2
euler 3% gcc -v
Reading specs from 
/auto_nfs/data10/users/jstroud/Programs/bin/../lib/gcc/i686-pc-linux-gnu/3.4.2/specs
Configured with: ./configure --prefix=/data1/users/jstroud/Programs : 
(reconfigured) ./configure --prefix=/data1/users/jstroud/Programs
Thread model: posix
gcc version 3.4.2

>> If its necessary, I can run setup.py build again and send the output 
>> to a file and post that to scipy-dev if you think it might be helpful.
> 
> Yes, that is what I intended.
> 

This is posted here:
http://www.jamesstroud.com/build-scipy-logs/build-scipy-py2.5-euler.txt

For symmetry, similar output for numpy is posted here:
http://www.jamesstroud.com/build-scipy-logs/build-numpy-py2.5-euler.txt

Please let me know if I can be of any further help with these issues.

James


From fredrik at pythonware.com  Sat Sep  2 02:42:26 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 02 Sep 2006 08:42:26 +0200
Subject: pysqlite - simple problem
In-Reply-To: <1157159337.388268.306790@m73g2000cwd.googlegroups.com>
References: <1157093787.952044.180020@74g2000cwt.googlegroups.com>	<1157096859.197049.120950@i42g2000cwa.googlegroups.com>	<Za_Jg.1457$v%4.69@newsread1.news.pas.earthlink.net>
	<1157159337.388268.306790@m73g2000cwd.googlegroups.com>
Message-ID: <edb94h$ea2$1@sea.gmane.org>

rdrink wrote:


> And yes I should prolly move to pysqlite2, but for now I was able to
> fix it this way...
> num = 200
> mess = "INSERT INTO foo (id) VALUES (%s)" % num
> cur.execute(mess)
> 
> ... don't know why I didn't think of that last (oh wait, Yes I do...
> because 'last night' was actually 2am this morning, after working all
> day!)

the "pyformat" parameter style means that you're supposed to use "%s" 
instead of "?" for the placeholders:

     cur.execute("INSERT INTO foo (id) VALUES (%s)", (num,))

while string formatting works, and is safe for simple cases like this, 
it can quickly turn into a performance and security problem.  better 
avoid it for anything other than command-line tinkering and throw-away 
scripts.

(I'm sure this is mentioned in the fine manual, btw ;-)

</F>



From python.list at tim.thechases.com  Fri Sep 29 14:23:39 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Fri, 29 Sep 2006 13:23:39 -0500
Subject: Passing Arguments
In-Reply-To: <1159553333.790780.284510@b28g2000cwb.googlegroups.com>
References: <1159553333.790780.284510@b28g2000cwb.googlegroups.com>
Message-ID: <451D64AB.6010109@tim.thechases.com>

> It works fine when I 'Run Module'...but when I type in interactive mode
> in the Python Shell
>>>> python using_sys.py test1 test2 test3
> 
> I get the following error:
> SyntaxError: invalid syntax


By using proper syntax... :*)

To pass parameters, you do it when *starting* python[*].  Thus, 
you'd use something like

c:\test\> python -i using_sys.py test1 test2 test3

or

tim at oblique:~/tmp> python -i using_sys.py test1 test2 test3

from your *system* command-prompt/shell (not the python shell) 
which will (with the "-i" parameter) leave you in the *python* 
command interpreter/shell.

-tkc


[*]  yes, you can write to the sys.argv to make them what you 
want for testing purposes, but that's intentionally and 
purposefully prevaricating about the meaning of "argv".  Best 
left for when it's what you really mean to do.






From deets at nospam.web.de  Mon Sep 18 14:37:55 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 18 Sep 2006 20:37:55 +0200
Subject: Could not build MySQLdb on PowerMac (PPC)
In-Reply-To: <mailman.235.1158601817.10491.python-list@python.org>
References: <mailman.235.1158601817.10491.python-list@python.org>
Message-ID: <4n87ceF96qbfU1@uni-berlin.de>

Ted Zeng schrieb:
> Hi,
> 
> I am new to Python. I am trying to build MySQLdb for my PowerPC
> PowerMac.
> I just downloaded the source last week and tried to build it.
> But I got the error messages as follow. I checked and there is no such
> files as 
> mysql_config
> mysql.h
> my_config.h
> ...
> 
> Did I download the wrong source?

You need the mysql development files. You could e.g. use fink to install 
mysql and the development files package. On my machine it's called 
mysql14-dev.


Diez


From http  Fri Sep 22 20:57:12 2006
From: http (Paul Rubin)
Date: 22 Sep 2006 17:57:12 -0700
Subject: Best practice for large source code projects
References: <1158963611.189319.148700@i42g2000cwa.googlegroups.com>
Message-ID: <7x1wq3iemv.fsf@ruckus.brouhaha.com>

"dhable at gmail.com" <dhable at gmail.com> writes:
> It works and things make sense to me. Yet, I feel uneasy that my
> model.py file is starting to approach 500 lines. What's the best
> practice or community opinion on this? Do I keep everything in a single
> file or do I start dividing things into separate files?

It varies by project and preference.  Working with very large files
can get cumbersome, but having a lot of small files means higher
amounts of editing hassle and more junk to keep track of.  

As a personal opinion, I'd say just try to keep your functions small
and understandable, and don't worry about file size until the files
start getting inconvenient to edit.  I find 1000-2000 lines is a
reasonable file size.


From ldo at geek-central.gen.new_zealand  Sun Sep 24 06:19:23 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 22:19:23 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <ef5m1h$h1k$4@lust.ihug.co.nz>

In message <slrneha9ng.k6.sybrenUSE at schuimige.stuvel.eu>, Sybren Stuvel
wrote:

> Lawrence D'Oliveiro enlightened us with:
>> Why doesn't MySQLdb provide a function like this:
> 
> Because generally you're able to pass newlines and the like just fine.
> You can even store binary data into a BLOB column.

Yes, I have done blobs. Still need a quoting function for the specials,
though.


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 08:29:29 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 14:29:29 +0200
Subject: Need compile python code
References: <1159013223.838966.118690@e3g2000cwe.googlegroups.com>
Message-ID: <4nknl9Far902U1@individual.net>

mistral wrote:

> Need compile python code, source is in html and starts with
> parameters:

Excuse me?

> #!/bin/sh -
> "exec" "python" "-O" "$0" "$@" 

Is the line break intended?

> I have installed ActivePython for windows.

What exactly do you want?

Python code is always compiled (to byte code) before it's run.

Regards,


Bj?rn

-- 
BOFH excuse #359:

YOU HAVE AN I/O ERROR -> Incompetent Operator error



From Eric_Dexter at msn.com  Mon Sep  4 09:07:59 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 4 Sep 2006 06:07:59 -0700
Subject: This seems to crash my program and gives me errors on the #include
	statements
Message-ID: <1157375279.790255.321010@b28g2000cwb.googlegroups.com>

I was trying to add this to my project but I must be missing some
includes or there is a serius error somewhere


Anthra Norell wrote:
> Dexter,

> Here's a function that screens out all instrument blocks and puts them into a dictionary keyed on the instrument number:


> --------------------------------------------


> def get_instruments (file_name):


>    INSIDE  = 1
>    OUTSIDE = 0


>    f = file (file_name, 'ra')
>    state = OUTSIDE
>    instruments = {}
>    instrument_segment = ''


>    for line in f:
>       if state == OUTSIDE:
>          if line.startswith ('<CsInstruments'):
>             state = INSIDE
>             instrument_segment += line
>       else:
>          instrument_segment += line
>          if line.lstrip ().startswith ('instr'):
>             instrument_number = line.split () [1]
>          elif line.startswith ('</CsInstruments'):
>             instruments [instrument_number] = instrument_segment
>             instrument_segment = ''
>             state = OUTSIDE


>    f.close ()
>    return instruments


> ------------------------------------------------


> You have received good advice on using parsers: "beautiful soup" or "pyparse". These are powerful tools capable of doing complicated
> extractions. Yours is not a complicated extraction. Simon tried it with "beautiful soup". That seems simple enough, though he finds
> the data by index leaving open where he gets the index from. There's surely a way to get the data by name.
>       Contrary to the parser the function will miss if tags take liberties with upper-lower case letters as they are probably
> allowed by the specification. A regular expression might have to be used, if they do.
>      From your description I haven't been able to infer what the final format of your data is supposed to be. So I cannot tell you
> how to go on from here. You'll find out. If not, just keep asking.


> The SE solution which you said couldn't work out would be the following. It makes the same dictionary the function makes and it is
> case-insensitive:


> ------------------------------------------------


> >>> Instrument_Segment_Filter = SE.SE ('<EAT> "~(?i)<CsInstruments>(.|\n)*?</CsInstruments>~==\n\n"  ')
> >>> instrument_segments= Instrument_Segment_Filter ('file_name', '')
> >>> print instrument_segments
> (... see all instrument segments ...)
> >>> Instrument_Number = SE.SE ('<EAT> ~instr.*~==\n')
> >>> instruments ={}
> >>> for segment in instrument_segments.split ('\n\n'):
>             if segment:
>                instr_line = Instrument_Number (segment)
>                instrument_number = instr_line.split ()[1]
>                instruments [instrument_number] = segment


> --------------------------------------------------


> (If you're on Windows and the CRs bother you, take them out with an additional definition when you make your
> Instrument_Block_Filter: (13)=  or  "\r=")


> Regards


> Frederic


> ----- Original Message -----
> From: <Eric_Dex... at msn.com>
> Newsgroups: comp.lang.python
> To: <python-l... at python.org>
> Sent: Wednesday, August 30, 2006 1:51 AM
> Subject: Re: newbe question about removing items from one file to another file


> > Anthra Norell wrote:
> > > Dexter,


> > > I looked at the format specification. It contains an example:


> > > -----------------------------------------------


> > > <CsoundSynthesizer>;
> > >   ; test.csd - a Csound structured data file


> > > <CsOptions>
> > >   -W -d -o tone.wav
> > > </CsOptions>


> ...
> etc.



I cut and pasted this..  It seems to be crashing my program.. I am not
sure that I have all the right imports..  seems to be fine when I go to

an older version of the file...  I uploaded it onto source forge.

https://sourceforge.net/project/showfiles.php?group_id=156455&package...

http://www.dexrow.com



From fredrik at pythonware.com  Thu Sep 21 04:06:52 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 21 Sep 2006 10:06:52 +0200
Subject: naming objects from string
In-Reply-To: <1158815689.478403.264420@d34g2000cwd.googlegroups.com>
References: <1158811166.928431.317060@m73g2000cwd.googlegroups.com>	<zvoQg.3828$e66.1118@newssvr13.news.prodigy.com>	<1158813236.493366.122600@k70g2000cwa.googlegroups.com>	<45121a25$0$75030$14726298@news.sunsite.dk>	<mailman.375.1158815161.10491.python-list@python.org>
	<1158815689.478403.264420@d34g2000cwd.googlegroups.com>
Message-ID: <eeth6s$pbr$4@sea.gmane.org>

manstey wrote:

> so they might provide a list of names, like 'bob','john','pete', with 3
> structures per name, such as 'apple','orange','red' and I need 9 tuples
> in my code to store their data:
> 
> bob_apple=()
> bob_orange=()
> ..
> pete_red=()
> 
> I then populate the 9 tuples with data they provide in a separate file,
> and the filled tuples are then validated against the metadata to make
> sure they are isomorphic.

if you want a dictionary, use a dictionary.

</F>



From rhymes at myself.com  Fri Sep  8 12:38:59 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Fri, 8 Sep 2006 18:38:59 +0200
Subject: Help with ctypes pointer return values
References: <1157728245.559588.95200@m73g2000cwd.googlegroups.com>
Message-ID: <1hlczru.b2yek21oyv9axN%rhymes@myself.com>

<cantankerousoldgit at gmail.com> wrote:
> Does anyone have a good idea how I should define recordList so that I
> can retrieve the record pointers?

POINTER(POINTER(c_void)) ?

Maybe I misunderstood tough...

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From tony.bedford at gmail.com  Tue Sep 19 17:34:07 2006
From: tony.bedford at gmail.com (codefire)
Date: 19 Sep 2006 14:34:07 -0700
Subject: Curious issue with simple code
In-Reply-To: <1158691966.421259.118880@h48g2000cwc.googlegroups.com>
References: <1158685663.636944.257590@b28g2000cwb.googlegroups.com>
	<1158688561.267994.231680@i42g2000cwa.googlegroups.com>
	<1158691966.421259.118880@h48g2000cwc.googlegroups.com>
Message-ID: <1158701647.049205.256490@i42g2000cwa.googlegroups.com>

George Sakkis wrote:

> By the way, an easier way to deal with paths is the path.py module
> (http://www.jorendorff.com/articles/python/path/). Your example could
> be rewritten simply as:
>
> from path import path
> for html_file in path(start_dir).walkfiles('*.html'):
>     print 'html file found!'
>

Thanks George,

I had played with it some more and ended up with the fairly succinct:

[code]
import os
import glob

for f in glob.glob('c:\\intent\\docn\\*\\*.html'):
    print f
[/code]

It works quite nicely - I'm just twiddling - first time writing Python
(but like it) :)
I've bookmarked that site too for future ref.

Thanks again,
Tony



From steve at holdenweb.com  Sat Sep 30 02:46:51 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 07:46:51 +0100
Subject: The Python world tries to be polite [formerly offensive to another
	language]
In-Reply-To: <1159555450.721085.51710@h48g2000cwc.googlegroups.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<1159555450.721085.51710@h48g2000cwc.googlegroups.com>
Message-ID: <efl3rk$8ap$1@sea.gmane.org>

Istvan Albert wrote:
[...]
> ps. as for the title of this post, it is ironic that you are insulting
> another community while asking for no insults
> 
Perhaps so, but none the less comp.lang.perl has a demonstrable history 
of newbie-flaming. Don't know what it's like now, as it's years since I 
read that group, but they used to just love the smell of crisply-toasted 
newbie in the morning ;-)

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From guettli at thomas-guettler.de  Fri Sep 15 09:49:00 2006
From: guettli at thomas-guettler.de (Thomas Guettler)
Date: Fri, 15 Sep 2006 15:49:00 +0200
Subject: Threads and Progress Bar
References: <mailman.10244.1157107721.27775.python-list@python.org>
Message-ID: <20060915154900.55b55324@berry.tbz-pariv.lan>

On Fri, 01 Sep 2006 21:43:46 +0530
Ritesh Raj Sarraf <rrs at researchut.com> wrote:

> Hi,
> 
> I have a small application, written in Python, that uses threads.
> The application uses function foo() to download files from the web. As it reads
> data from the web server, it runs a progress bar by calling an install of a
> progress bar class.
> 
> When using threads, I get the problem that the progress bar gets over-written by
> the download progress of files from other threads.
> 
> I believe my change has to go into the progress bar class to make it thread
> aware.

You need some kind of lock. Look at the module threading. There
is a class called "Lock".

PS: If you use pygtk: I switched from using threads to idle_add and (*). This is much easier
and you don't need any locking. 

# (*)
while gtk.events_pending():
   gtk.main_iteration()

-- 
Thomas G?ttler, http://www.tbz-pariv.de/ 
Bernsdorfer Str. 210-212, 09126 Chemnitz, Tel.: 0371/5347-917


From __peter__ at web.de  Sat Sep  2 10:38:38 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 02 Sep 2006 16:38:38 +0200
Subject: thread join() not stopping
References: <edc269$4r7$1@gemini.csx.cam.ac.uk>
Message-ID: <edc50c$ft$03$1@news.t-online.com>

mclaugb wrote:

> When i add the print (or other) function into the run method--the thread
> fails to stop after 2 seconds which the join(2) should ensure.

The calling thread waits until the thread you call join() upon stops or 2
seconds have passed -- whatever occurs first.


import time
from threading import Thread

class MyThread(Thread):
    tick = 0.1
    def __init__(self, seconds):
        Thread.__init__(self)
        self.n = int(seconds/self.tick)
    def run(self):
        for i in range(self.n):
            time.sleep(self.tick)
            print "running"

def measure(seconds):
    print "Run for %.2f seconds..." % seconds
    t = MyThread(seconds)
    t.setDaemon(True)
    t.start()
    starttime = time.time()
    t.join(1) # wait one second
    stoptime = time.time()
    print stoptime-starttime
    t.join() # wait for how long t takes to terminate
    print "...done"

if __name__=="__main__":
    measure(1.5)
    measure(0.5)

Peter



From sebastien.thur at laposte.net  Sat Sep 23 04:04:38 2006
From: sebastien.thur at laposte.net (seb)
Date: 23 Sep 2006 01:04:38 -0700
Subject: what is the best practice to separate Pygtk and long running
	thread code
In-Reply-To: <1158958212.238667.275240@m7g2000cwm.googlegroups.com>
References: <1158912461.178598.256050@k70g2000cwa.googlegroups.com>
	<1158958212.238667.275240@m7g2000cwm.googlegroups.com>
Message-ID: <1158998677.988792.268000@i42g2000cwa.googlegroups.com>

Hi,

I am running on WinXP so that is not so convenient to communicate
between separate processes.

In the past I have used blocking files but it may be a slow
communication way for some applications. It may also be too much
depending on the disk on which the program is run (network drives with
different rights).

It seems that RPC call would do the job but I would have liked
something simplier (although I did not tried it).

The best thing would be to have a queue feature that would be be shared
between processes but as far as I know It does not exists in python.


Thanks.
Seb


Do you know of some features like a queue that
sjdevnull at yahoo.com wrote:
> seb wrote:
> > Hi,
> >
> > I am using pygtk for the first times.
> >
> > I am wondering what would be the best "pattern" to interface pygtk with
> > a thread.
> >
> > The thread is collecting informations (over the network for example) or
> > is doing some long calculations.
>
> It sounds like you don't need to share all your memory--any time you're
> trying to "seperate" threads, you probably want to be using processes
> instead.



From ndbecker2 at gmail.com  Wed Sep 27 07:40:05 2006
From: ndbecker2 at gmail.com (Neal Becker)
Date: Wed, 27 Sep 2006 07:40:05 -0400
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
	<1159291272.617534.177790@h48g2000cwc.googlegroups.com>
	<1159292714.862469.228720@k70g2000cwa.googlegroups.com>
Message-ID: <efdo08$c3c$1@sea.gmane.org>

George Sakkis wrote:

> johnzenger at gmail.com wrote:
> 
>> def transform(seq, size):
>>     i = 0
>>     while i < len(seq):
>>         yield tuple(seq[i:i+size])
>>         i += size
> 
> Or for arbitrary iterables, not just sequences:
> 
> from itertools import islice
> def transform(iterable, size):
>      it = iter(iterable)
>      while True:
>          window = tuple(islice(it,size))
>          if not window:
> break
>          yield window
> 
> George
> 

Thanks guys!

This one above is my personal favorite.




From tony.bedford at gmail.com  Tue Sep 26 06:23:11 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 03:23:11 -0700
Subject: I need some help with a regexp please
In-Reply-To: <mailman.660.1159265585.10491.python-list@python.org>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<1159205101.539477.109910@m7g2000cwm.googlegroups.com>
	<5w2Sg.12714$v%4.12201@newsread1.news.pas.earthlink.net>
	<4518F801.4040708@vtxmail.ch>
	<mailman.660.1159265585.10491.python-list@python.org>
Message-ID: <1159266191.416714.10640@i3g2000cwc.googlegroups.com>

> for dense guys like myself, regular expressions work best if you use
> them as simple tokenizers, and they suck pretty badly if you're trying
> to use them as parsers.

:) Well, I'm with you on that one Fredrik! :)



From haraldarminmassa at gmail.com  Mon Sep 18 08:59:34 2006
From: haraldarminmassa at gmail.com (GHUM)
Date: 18 Sep 2006 05:59:34 -0700
Subject: PIL 2.5 win32 binaries?
Message-ID: <1158584374.572133.66340@i42g2000cwa.googlegroups.com>

On the PIL website I read:

The current free version is PIL 1.1.5, which has been tested with
Python 1.5.2 and newer, including 2.3 and 2.5.

but in downloads I cannot see any binaries for windows and Python 2.5

Are they somewhere available?

Best wishes,

Harald



From quentel.pierre at wanadoo.fr  Mon Sep 11 15:38:48 2006
From: quentel.pierre at wanadoo.fr (Pierre Quentel)
Date: 11 Sep 2006 12:38:48 -0700
Subject: best small database?
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <1158003527.979849.240080@m73g2000cwd.googlegroups.com>

Here are some pure-Python databases :
- gadfly : an SQL engine, mature and well tested, works in memory so
not fit for large data sets
- SnakeSQL : another SQL engine, less mature I think and very slow when
I tested it
- KirbyBase : stores data in a single file ; uses a more Pythonic
syntax (no SQL) ; no size limit but performance decreases very much
with the size. It looked promising but the last version is more than 1
year old and the author seems to focus on the Ruby version now
- buzhug : Pythonic syntax (uses list comprehensions or methods like
create(), select() on the db object), much faster than all the above.
I'm obviously biaised : I wrote it...
- for a small set of data you could also try strakell, the recipe I
published on the Python Cookbook :
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496770
With less than 200 lines of code, it's a very fast in-memory db
engine that also uses list comprehensions for requests :

    SQL : SELECT name FROM persons WHERE age > 20
    strakell :  [ r["name"] for r in persons if r["age"] > 20 ]

You can also create an index : persons.create_index("age")
and then use it like this : persons.age[20] = list of the records where
age = 20

Other pure-Python databases : ZODB (probably overkill for a small
database) and Durus (I didn't test it)

As said in others answers, the inclusion of SQLite in the standard
distribution might make pure-Python solutions less attractive

Regards,
Pierre



From onurb at xiludom.gro  Fri Sep  1 12:28:32 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 01 Sep 2006 18:28:32 +0200
Subject: SQLObject or SQLAlchemy?
In-Reply-To: <1157125603.455324.23490@b28g2000cwb.googlegroups.com>
References: <A4GJg.2722$No6.53312@news.tufts.edu>
	<1157125603.455324.23490@b28g2000cwb.googlegroups.com>
Message-ID: <44f85fb1$0$1783$636a55ce@news.free.fr>

lazaridis_com wrote:
> John Salerno wrote:
>> Are there any major differences between these two? It seems they can
>> both be used with TurboGears, and SQLAlchemy with Django. I'm just
>> wondering what everyone's preference is, and why, and if there are even
>> more choices for ORM.
>>
>> Thanks.
> 
> You can review the Persit Case, which will shortly evaluate the stated
> ORM's:
> 
> http://case.lazaridis.com/wiki/Persist
> 
> It is possibly of importance to remember some requirements which should
> be relevant for an persistency mechanism targetting an OO language:

RDBMS are not "persistency mechanism", they are data management tools.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From anthonybaxter at gmail.com  Tue Sep 19 09:06:40 2006
From: anthonybaxter at gmail.com (Anthony Baxter)
Date: Tue, 19 Sep 2006 23:06:40 +1000
Subject: Installing Python on a 64-Bit OS
In-Reply-To: <eeop6s$j0$2@sea.gmane.org>
References: <450FDFD6.5050601@gmail.com> <eeop6s$j0$2@sea.gmane.org>
Message-ID: <e69d3ed20609190606y3351e0e7s56ccc7db58d13b0d@mail.gmail.com>

> More recent versions of Python have incorporated much more support for
> 64-bit architectures. 2.5 is about to be released (I believe it should
> be out in the next 24 hours), and I'd recommend that over the older
> version you are considering.

If by "24 hours" you mean "20 minutes ago", this is entirely correct <wink>


From metaperl at gmail.com  Sat Sep 23 07:31:46 2006
From: metaperl at gmail.com (metaperl)
Date: 23 Sep 2006 04:31:46 -0700
Subject: One program in different GUI Toolkits
In-Reply-To: <eeqn0i$d8n$1@newsreader2.utanet.at>
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
Message-ID: <1159011106.418155.118660@m73g2000cwd.googlegroups.com>


Franz Steinhaeusler wrote:
> Hello NG,
>
> I have a suggestion.
>
> For simplifying learning or switching between different GUI
> Toolkits, I could imagine to have one short clearly presented
> program in different GUI Toolkits.

>
> Anybody is interested in implementing in one other GUI?
> We could put in on one Python wiki page for example.
>

Thanks to your post, I have fallen in love with PythonCard. I would be
happy to try to implement what you want in that.



From harbingerofpeace at post.com  Sat Sep 23 23:22:03 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 20:22:03 -0700
Subject: What is the best way to "get" a web page?
Message-ID: <1159068122.933629.128440@i3g2000cwc.googlegroups.com>

I have the following code:

>>> web_page = urllib.urlopen("http://www.python.org")
>>> file = open("temp.html", "w")
>>> web_page_contents = web_page.read()
>>> file.write(web_page_contents)
>>> file.close
<built-in method close of file object at 0xb7cc76e0>
>>>

The file "temp.html" is created, but it doesn't look like the page at
www.python.org. I'm guessing there are multiple frames and my code did
not get everything. Can anyone point me to a tutorial or other
reference on how to "get" all of the html contents at a particular
page?

Why did Python print the line after "file.close"?

Thanks,
Pete



From sjmachin at lexicon.net  Sat Sep 23 23:14:47 2006
From: sjmachin at lexicon.net (John Machin)
Date: 23 Sep 2006 20:14:47 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <1159064765.214210.300630@k70g2000cwa.googlegroups.com>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
	<1159064765.214210.300630@k70g2000cwa.googlegroups.com>
Message-ID: <1159067687.062370.167580@m73g2000cwd.googlegroups.com>


Pete wrote:
> John Machin wrote:
> > Pete wrote:
> > > Fade in to episode II...
> > >
> > > > ...
> > > > This is compiling a *constant* regular expression, and works OK on the
> > > > Windows distribution of Python 2.4.3 :
> > >
> > > Hmmmm. Here's the version information stuff:
> > >
> > > Python 2.4.2 (#1, Feb 12 2006, 03:59:46)
> > > [GCC 4.1.0 20060210 (Red Hat 4.1.0-0.24)] on linux2
> > >
> > > I'm going to upgrade Python and see if that has any effect...
> > > I'm running this on a Fedora Core 5 box...
> > >
> > > > ...
> > > > You appear to be running 2.4.n; what is n, and exactly which *x
> > > > platform are you running it on? Perhaps a file in /usr/lib/python2.4 is
> > > > corrupt, but we won't know until you give the *full* traceback. Do you
> > > > get the same results when you try what I did at the interpreter
> > > > interactive prompt?
> > >
> > > The error I received was from the interactive prompt thing.
> >
> > So I noticed from your first posting. Now do what you were asked: try
> > what I did.
> >
> > > Is there
> > > some way I can get more verbose information or something that would be
> > > more helpful?
> > >
> >
> > Yes, just include the whole traceback!!! Example of what I mean is
> > below:
>
> Here's my full interactive I/O:
>
> Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
> [GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import httplib
> >>> conn = httplib.HTTPConnection("www.python.org")
> >>> conn.request("GET", "/index.html")
> Hello World.
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/lib/python2.4/httplib.py", line 804, in request
>     self._send_request(method, url, body, headers)
>   File "/usr/lib/python2.4/httplib.py", line 821, in _send_request
>     self.putrequest(method, url, **skips)
>   File "/usr/lib/python2.4/httplib.py", line 752, in putrequest
>     self.putheader('Host', self.host.encode("idna"))
>   File "/usr/lib/python2.4/encodings/__init__.py", line 96, in
> search_function
>     globals(), locals(), _import_tail)
>   File "/usr/lib/python2.4/encodings/idna.py", line 6, in ?
>     dots = re.compile(u"[\u002E\u3002\uFF0E\uFF61]")
>   File "/usr/lib/python2.4/sre.py", line 180, in compile
>     return _compile(pattern, flags)
>   File "/usr/lib/python2.4/sre.py", line 225, in _compile
>     p = sre_compile.compile(pattern, flags)
>   File "/usr/lib/python2.4/sre_compile.py", line 500, in compile
>     code = _code(p, flags)
>   File "/usr/lib/python2.4/sre_compile.py", line 481, in _code
>     _compile_info(code, p, flags)
>   File "/usr/lib/python2.4/sre_compile.py", line 459, in _compile_info
>     _compile_charset(charset, flags, code)
>   File "/usr/lib/python2.4/sre_compile.py", line 178, in
> _compile_charset
>     for op, av in _optimize_charset(charset, fixup):
>   File "/usr/lib/python2.4/sre_compile.py", line 221, in
> _optimize_charset
>     return _optimize_unicode(charset, fixup)
>   File "/usr/lib/python2.4/sre_compile.py", line 341, in
> _optimize_unicode
>     mapping = array.array('b', mapping).tostring()
> TypeError: typecode argument must be a valid type.
> >>>
>
> >
> > | C:\junk>copy con wally.py
> > | guff = 1 / 0
> > | ^Z
> > |         1 file(s) copied.
> > |
> > | C:\junk>python
> > | Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)]
> > on win32
> > | Type "help", "copyright", "credits" or "license" for more
> > information.
> > | >>> import wally
> > | Traceback (most recent call last):
> > |   File "<stdin>", line 1, in ?
> >
> > Your posting appeared truncated when viewed with both Google groups and
> > in a regular newsreader.
>
> I clipped out stuff that didn't seem relevant. I didn't clip anything
> out this time.
>
> > There is no guarantee that the last line shown is the one that caused
> > the error.
> > Just as if this example were missing the following lines, we don't know
> > which
> > source line caused the error, nor even what the error was!!
> >
> > |   File "wally.py", line 1, in ?
> > |     guff = 1 / 0
> > | ZeroDivisionError: integer division or modulo by zero
> >
> > HTH,
> > John
>
> I'm still lost... Were you able to successfully run the GET example at
> http://www.python.org/doc/current/lib/httplib-examples.html ?
>

Yes., but irrelevant -- I was also able (as demonstrated) to do the
re.compile(constant)  thing that was part-way down the traceback.

Moving right along:
1. The Hello World thing is really worrying.
2. The error message "typecode argument must be a valid type" doesn't
occur *anywhere* in the 2.4.3 source AFAICT. The string "typecode"
appears in only 2 modules, array and some Mac gadget. 'b' is a valid
typecode. The expected error message for invalid typecodes is:
Modules\arraymodule.c(1874): "bad typecode (must be c, b, B, u, h, H,
i, I, l, L, f or d)");

I checked in the Python subversion/cvs repository: it looked like that
(maybe fewer valid typecodes) back in the year 2000. It still looks
like that (latest revision: 24 August).

Conclusion: Your Python installation is well and truly stuffed. You
need advice from someone who knows how Python is set up for and
installed on your platform.

Good luck!
John



From lycka at carmen.se  Wed Sep 27 05:22:52 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Wed, 27 Sep 2006 11:22:52 +0200
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
Message-ID: <efdftc$9tl$1@wake.carmen.se>

walterbyrd wrote:
> If so, I doubt there are many. 

Depends on what you compare with. I'm pretty sure there are thousands
of people working as Python programmers, and many more using it as a
smaller tool in their work. Of course this is small compared to Java
or C++.

In the US, it seems a lot of companies in the animation industry, such
as Dreamworks and Industrial Light & Magic regularly look for Python
skilled people.

In my vicinity, G?teborg with surroundings in Sweden, I know of
several places where people work with Python. I'm sure the amount of
C++,  Java or VB programmers are magnitudes bigger, but there are also
a lot more people eager to fill those positions.

My employer, Jeppesen Systems AB, has dozens of Python programmers,
and we train our customers to use Python for customization and 
integration etc. So, we know that a significant number of the world's
largest air lines and some significant railroad companies have trained
Python developers (we trained them) and use Python for customizing our
products, and for e.g. integration with legacy systems.

Just a few hundred meters from us, there is AB Strakt, which was more
or less a pure Python company last time I looked. The pharmaceuticals
company Astra Zeneca uses Python in some of their research, and I've
seen people from other companies in the vicinity asking Python questions
on various mailing lists etc. Python is certainly used in Chalmers, the
technical University here. This is in a region with way less than one
million inhabitants. I'm pretty sure we have >1 Python programmer per
10 000 inhabitants. Let's say that's above Swedish average. I still
think there is at least 300 Python programmers among the 9 million
people here. Although we're just 0.15% of the worlds populations, my
experience is that we make and use something like 1% of the high tech
stuff in the world, so my standard extrapolation technique would yield
30000 python programmers globally.

> I wonder why that is?

Well, it takes time to change things, and many decision makers aren't
very well informed. Maybe they are more likely to choose something
which is marketed and supported by some large commercial entity. The
rise of Linux and open source is changing that, but it takes time.
If you look at languages introduced the last 15 years or so, I think
Python is one of the more popular. The languages I can think of right
now, that have appeared since 1990 or so, and received a significant
mindshare are C#, Java, JavaScript, Perl, PHP, Python, Ruby and Visual
Basic.

Of these, C#, Java and Visual Basic have serious commercial backing
which promoted them heavily for certain applications, and provided a
lot of convenient tools. Those languages are also closely modeled
syntactically on a predecessor, C++ for Java, Java for C#, and VB is
just a new BASIC dialect, which makes the transition to start using
them easier, at the expense of retaining stupid aspect of old languages
that we'd rather get rid of. I.e. getting started seems more important
than getting it right. That should help in the short run, but be less
good in the long run.

Perl and CGI was the best available tool when the big web boost
happened, and PHP has taken over that role. They are very popular in
a particular niche (but Perl seems to be in decline) but like
JavaScript, they are niche tools.

Ruby is the language most like Python I guess, and it's nowhere near
Python in popularity, even if RoR has given it a boost. As people have
noticed, Python is often used together with C or C++, and it seems to
me that Java programmer might prefer Ruby to Python. This might be
because Java and Ruby are both purely OO, and might fit people who think
OO is everything, while Python and C++ are multi paradigm programmers
that share a different mindset.

So, to summarize, Python is probably the most popular general purpose
programming language invented since 1990 which didn't have multi
billion dollar backing. Now, it has more backing, with Google investing
in it, for instance by hiring the creator and other important Python
developers. Python 2.5 has advanced it even further, and it seems to
me that Python 3.0 will be a much smoother ride than Perl 6 turned out
to be for the Perl community. IronPython and PyPy are also very
interesting projects.

Python is a generic programming language, so I don't think we need some
kind of killer application like RoR. On the other hand, I think a really
smooth IDE with a convenient GUI builder could help making it more
widely spread "among the masses".



From jwjw at magma.ca  Wed Sep 13 13:19:50 2006
From: jwjw at magma.ca (Bill Williams)
Date: Wed, 13 Sep 2006 13:19:50 -0400
Subject: Tkinter on Python 2.4 on Mac OS X?
References: <1157555411.975024.38060@m79g2000cwm.googlegroups.com>
	<1158164457.310716.207170@h48g2000cwc.googlegroups.com>
Message-ID: <jwjw-4A259D.13195013092006@news.isp.giganews.com>

In article <1158164457.310716.207170 at h48g2000cwc.googlegroups.com>,
 "Ben Kovitz" <bkovitz at acm.org> wrote:
>...I finally got the
> "Hello World" program at http://docs.python.org/lib/node718.html to
> work, but only under Python 2.3.
> 
> Has anyone gotten Tkinter running with Python 2.4 on a Mac?
> 
The Hello World example works for me. You have to save as applet, though.

Can anybody recommend some examples showing how to get the 'text'  
module to work? There is a lot of information in 
http://www.pythonware.com/library/tkinter/introduction/index.htm
but I found no obvious place to begin

Bill Williams.


From nomail at nixmail.com  Sat Sep  2 06:25:46 2006
From: nomail at nixmail.com (DarkBlue)
Date: Sat, 02 Sep 2006 18:25:46 +0800
Subject: Netstat Speed
Message-ID: <44f95c2c@127.0.0.1>


Following code works . 
My question is can I make it faster ?


def activeip(checkip):
     # if there is any line returned we set activeb to 1 indicating that
     # this ip is active during a netstat run   
     activeb=0          
     for line in os.popen("netstat -a -n | grep '%s'" % checkip) :
     s=line
     if s <>'' :
        activeb=1
     return activeb 


Thanks


From duncan.booth at invalid.invalid  Tue Sep 26 06:45:07 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 10:45:07 GMT
Subject: where are isinstance types documented?
References: <1159264747.304650.92260@e3g2000cwe.googlegroups.com>
	<mailman.661.1159266060.10491.python-list@python.org>
Message-ID: <Xns984A778C6F1E9duncanbooth@127.0.0.1>

Fredrik Lundh <fredrik at pythonware.com> wrote:

> Sequences:
>      str
>      unicode
>      tuple
>      list

It is also worth mentioning that you can use "isinstance(a, basestring)" as 
a way to check for either string type although, of course, "isinstance(a, 
(str, unicode))" also works.

So far as I know there is no practical use for basestring other than using 
it in isinstance.


From kay.schluehr at gmx.net  Fri Sep 15 15:21:12 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 15 Sep 2006 12:21:12 -0700
Subject: REQ: Java/J2EE Developer 10 Months
In-Reply-To: <mailman.146.1158345914.10491.python-list@python.org>
References: <1158342517.415734.51510@k70g2000cwa.googlegroups.com>
	<mailman.146.1158345914.10491.python-list@python.org>
Message-ID: <1158348072.829171.104250@i3g2000cwc.googlegroups.com>


Steve Holden wrote:
> shrikant at coolsoft.cc wrote:
> [...]
> > Skill:
> > --------
> >
> > *Java, 2 year UNIX - HP / Solaris, 2 yrs OOA+D, Corba, Perl, XML, UML.
> > *Java dev experience, Swing, JPS, 2 years of OOA+D.
>
> Clearly not spam, since the guy is so in touch with the readership of
> this group ... sigh ... is it just me, or is this person an idiot?

I'm scared of him. He might be a delegate of the prince of darkness who
has the coldest touch and the biggest pocket and spreads horror where
he goes.



From g.brandl-nospam at gmx.net  Wed Sep 27 04:32:17 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Wed, 27 Sep 2006 10:32:17 +0200
Subject: What's up with site.Quitter?
In-Reply-To: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
References: <r_mSg.5089$TV3.2100@newssvr21.news.prodigy.com>
Message-ID: <efdcui$acr$1@news.albasani.net>

James Stroud wrote:
> Hello All,
> 
> Still jubilantly configuring my work environment for python 2.5, I came 
> accross a curiosity when writing an automatic vim syntax file creator 
> (so I can automatically update my syntax coloring with future python 
> releases).
> 
> It seems I can find a reference to just about every type except those 
> for "exit" and "quit" in the standard library somewhere. E.g.:
> 
> py> type(__builtins__.Ellipsis) is types.EllipsisType
> True
> 
> However, in an appearant break with consistency, this can not be done 
> for "exit" and "quit" because site.Quitter is nested inside of the 
> setquit() function in the site.py module.
> 
> Would moving this class definition to module level be something that 
> would meet with great resistance?

Not really, but what would you do with it? It's an internal object used
for only exit() and quit(), and of no real use elsewhere.

Georg


From onurb at xiludom.gro  Mon Sep 18 06:20:35 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Mon, 18 Sep 2006 12:20:35 +0200
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158428443.355245.310730@d34g2000cwd.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
	<1158428443.355245.310730@d34g2000cwd.googlegroups.com>
Message-ID: <450e72f4$0$31021$636a55ce@news.free.fr>

nicolasfr at gmail.com wrote:
> Wildemar Wildenburger wrote:
>> nicolasfr at gmail.com wrote:
>>> I have read many messages of people complaining about the documentation,
>>> it's lack of examples and the use of complicated sentences that you
>>> need to read 10 times before understanding what it means.
>>  >
>> Where have you read that?
>>
>> wildemar
> 
> I don't mean to start a flame war about this but here are some
> reference of people, who like me, don't like the current python doc:
> http://xahlee.org/UnixResource_dir/writ/python_doc.html

Xah Lee is a well-known crank.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From steve at holdenweb.com  Thu Sep  7 18:34:30 2006
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 07 Sep 2006 23:34:30 +0100
Subject: Two ethernet cards/networks (still)
In-Reply-To: <M6CdnZKD9p1rwZ3YnZ2dnUVZ_sednZ2d@nmt.edu>
References: <M6CdnZKD9p1rwZ3YnZ2dnUVZ_sednZ2d@nmt.edu>
Message-ID: <edq6oe$bso$1@sea.gmane.org>

Bob Greschke wrote:
> There is a lot to stuff that seems to skirt around this issue (most of which 
> has to do with finding your IP address), but I can't find anything that 
> explains how to write a client that (in my case) needs to collect some 
> information from some equipment on a private network/Ethernet card, then 
> transmit that info on the other Ethernet card/"outside" network to another 
> program (which will put it into a db).
> 
> "binding to a specific address is almost never used for a client", sez 
> Foundations of Python Network Programming, but is that how it's done??  Each 
> card has a fixed IP address.  It's on Windows at this time if that makes any 
> difference.
>  
The reason that "binding to a specific address is almost never used for 
a client" is because it's the server destination address that the 
network layer will use to determine which interface is used to 
communicate with a specific server host.

Suppose your network setup looks like this:


+-------------------+------------------------+ Network A
                     |
                     |
                     |
                     | 192.168.12.34/24
                     |
            +--------+--------+
            |                 |
            |                 |
            |     YOUR HOST   |
            |                 |
            |                 |
            +--------+--------+
                     |
                     | 201.46.34.22/24
                     |
                     |
                     |
+-------------------+----------+-------------+ Network B
                                |
                                +
                       +--------+--------+
                       |      router     |
                       |   to internet   |
                       +-----------------+

If your client program tries to communicate with, say, 192.168.12.18 
then by the IP network layer will automatically select network A as the 
medium, since the destination is local to that network. If you then want 
to communicate the results to 201.46.34.118 then network B will be used, 
again because the destination is local to that network (its first 24 
bits are the same as the first 24 bits of the destination).

In this case the router on network B will almost certainly be the 
default route for the host, as it's the way to everywhere else.

This isn't really Python-related, so I hope it answers your question!

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From daniel.baluta at gmail.com  Wed Sep 20 03:27:07 2006
From: daniel.baluta at gmail.com (daniel)
Date: 20 Sep 2006 00:27:07 -0700
Subject: Python Threading
Message-ID: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>

Hello,
Can anyone explain the main points in working with threads in Python.
Why use threading and not Thread.I have read an article that i have to
subclass the Thread class and override some function.



From larry.bates at websafe.com  Wed Sep 20 09:20:53 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 20 Sep 2006 08:20:53 -0500
Subject: Using py2exe to wrap a service?
In-Reply-To: <1158756139.688916.90020@m73g2000cwd.googlegroups.com>
References: <1158756139.688916.90020@m73g2000cwd.googlegroups.com>
Message-ID: <45114035.5060207@websafe.com>

Maria.Reinhammar at accalon.com wrote:
> I have an app using active_directory.py and the std module asyncore in
> a Windows Service.
> Works perfectly!
> That is, until I try to use py2exe to create a standalone (need to
> avoid installing the entire Python etc. on the target system).
> 
> When I try to start the installed Service, the system tells me it
> terminates prematurely
> and in the event log I find:
> The instance's SvcRun() method failed
>   File "win32serviceutil.pyc", line 785, in SvcRun
>   File "XXProxySvc.pyc", line 126, in SvcDoRun
>   File "XXProxySvc.pyc", line 94, in setup
>   File "D:\projects\XXProxy\DB.py", line 54, in loadFromAD
>   File "active_directory.pyc", line 402, in search
>   File "active_directory.pyc", line 398, in root
>   File "active_directory.pyc", line 371, in AD
>   File "active_directory.pyc", line 378, in _root
>   File "win32com\client\__init__.pyc", line 73, in GetObject
>   File "win32com\client\__init__.pyc", line 88, in Moniker
> pywintypes.com_error: (-2147221020, 'Invalid syntax', None, None)
> 
> The offending line is:
> import active_directory as AD
> ...
> for item in AD.search ("objectCategory='Person'"):
> ...
> 
> I.e. the call to AD.search() is the entry point to the problem.
> 
> The setup.py is (pretty straight forward..):
> from distutils.core import setup
> import py2exe
> 
> class Target:
>     def __init__(self, **kw):
>         self.__dict__.update(kw)
>         # for the versioninfo resources
>         self.version = "0.9.0"
>         self.company_name = "My Company"
>         self.copyright = "My Company (c)"
>         self.name = "FilterProxy"
> 
> ################################################################
> # a NT service, modules is required
> myservice = Target(
>     # used for the versioninfo resource
>     description = "AD Driven Mail Filter",
>     # what to build.  For a service, the module name (not the
>     # filename) must be specified!
>     modules = ["ProxySvc"]
>     )
> 
> excludes = []
> setup(options = {"py2exe": {# create a compressed zip archive
>                             #"compressed": 1,
>                             #"optimize": 2,
>                             "excludes": excludes
>                             }
>                  },
>       service=[myservice]
>       )
> 
> 'elp! Pleeeez!
> 

You may want to post this on gmane.comp.python.py2exe also.

I'm going to try to guess what the problem is, but it is a little hard to tell
from here.  py2exe does its best to find all the modules required to create the
.exe.  Sometimes modules do dynamic imports, etc. of modules that "fool" py2exe.
 I'm guessing that this is the case and that you will need to manually include
the missing module.  Most such errors seem to fall into this category.  Hope
this at least points you in the correct direction.

-Larry Bates


From steve at holdenweb.com  Mon Sep 25 10:39:15 2006
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 25 Sep 2006 10:39:15 -0400
Subject: Leave the putdowns in the Perl community, the Python world does
	not need them
In-Reply-To: <hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
References: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>
	<hLSdnS3OpbkJfIrYnZ2dnUVZ_oKdnZ2d@comcast.com>
Message-ID: <ef8pl2$7dp$1@sea.gmane.org>

Steven Bethard wrote:
> metaperl wrote:
> 
>>I was shocked to see the personal insults hurled in this thread:
>>http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b
> 
> 
> I see that this is a Fredrik Lundh thread.  I've felt the same way 
> before, but Fredrik has been around a long time[1] and if you listen 
> through the sometimes sharp words, he really has a lot of intelligent 
> things to say.  All I can advise is that if you feel like Fredrik is 
> getting under your skin, take a deep breath and read a different thread 
> for a while.  I promise you, it's worth it!
> 
Yup, if the effbot says you are wrong it would be sensible to at least 
consider the possibility. But nobody can *force* you to read what it says.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From python.sam at googlemail.com  Mon Sep 25 14:44:33 2006
From: python.sam at googlemail.com (sam)
Date: 25 Sep 2006 11:44:33 -0700
Subject: python interpreter on solaris 10
References: <1159204854.293731.9810@b28g2000cwb.googlegroups.com>
	<1159205234.213553.164990@e3g2000cwe.googlegroups.com>
	<1159206194.148219.176800@i42g2000cwa.googlegroups.com>
Message-ID: <1159209873.808837.86460@d34g2000cwd.googlegroups.com>

casevh at comcast.net wrote:
> > i think i've tracked down the equivalent files on my pc. one opens the
> > interpreter in a white-backed text editor, the other at the
> > black-backed command prompt. i have equivalent files of the same size
> > on the workstation, which must be the same. does anyone know why i'm
> > getting 'there is no installed viewer capable of displaying the
> > document'?
>
> What, exactly, are you doing to create this error?
>

searching on the java desktop for all files with 'idle' in them.
clicking on idle.py which is the same size as the equivalent file on my
pc (from which idle does open).
'could not open document "idle.py"' message comes up.

> What happens when you enter the line below at a command prompt?
>
> /usr/bin/python
not found

/usr/lib/python2.4/idlelib/idle.py
/usr/sfw/python2.3/idlelib/idle.py gives

'there is no action associated with "idle.py"'
configure gnome to associate application?

click yes:
edit file type window pops up.
program to run menu is empty.
browse is available. any ideas on what i need to choose?



From ldo at geek-central.gen.new_zealand  Tue Sep 26 07:59:47 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 23:59:47 +1200
Subject: Algorithm Question
References: <ee1g52$f0i$1$8300dec7@news.demon.co.uk>
	<1157989656.266078.205560@d34g2000cwd.googlegroups.com>
	<ee44nl$8r$1$830fa79d@news.demon.co.uk>
	<1158015700.817709.253180@h48g2000cwc.googlegroups.com>
	<eeconn$s2n$1$8300dec7@news.demon.co.uk>
Message-ID: <efb4lp$fak$2@lust.ihug.co.nz>

In message <eeconn$s2n$1$8300dec7 at news.demon.co.uk>, Andrew McLean wrote:

> I have the ability to query a database in a legacy system and extract
> records which match a particular pattern. Specifically, I can perform
> queries for records that contain a given search term as a sub-string of
> a particular column.

What are the constraints on search terms? Are you allowed to specify the
null search term, which would match everything?


From wuwei23 at gmail.com  Wed Sep  6 01:40:03 2006
From: wuwei23 at gmail.com (alex23)
Date: 5 Sep 2006 22:40:03 -0700
Subject: IronPython on Mono howto
In-Reply-To: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
References: <1157511027.235083.266330@h48g2000cwc.googlegroups.com>
Message-ID: <1157521203.821638.47590@i42g2000cwa.googlegroups.com>

sanxiyn at gmail.com wrote:
> Okay, here we go:
> 1. Download IronPython

Kudos for taking the time!



From fredrik at pythonware.com  Thu Sep 14 12:36:29 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 14 Sep 2006 18:36:29 +0200
Subject: How do I converted a null (0) terminated string to a Python 
	string?
In-Reply-To: <pan.2006.09.14.15.36.07.509974@gmx.net>
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>	<1158206913.616487.163410@b28g2000cwb.googlegroups.com>	<1158208960.604307.59760@e3g2000cwe.googlegroups.com>	<1158210867.646388.319050@p79g2000cwp.googlegroups.com>	<1158212423.601263.122640@p79g2000cwp.googlegroups.com>	<mailman.66.1158218413.10491.python-list@python.org>	<1158225634.359349.187610@k70g2000cwa.googlegroups.com>	<1158245135.725733.21920@k70g2000cwa.googlegroups.com>	<1158247587.541483.266640@k70g2000cwa.googlegroups.com>
	<pan.2006.09.14.15.36.07.509974@gmx.net>
Message-ID: <eec0ee$3ac$2@sea.gmane.org>

Marc 'BlackJack' Rintsch wrote:

> I would spell it:
> 
> if strg.endswith('\0'):
>     strg = strg[:-1]

unless you're in a hurry; startswith and endswith are horribly 
inefficient compared to ordinary indexing/slicing.

(as I've pointed out elsewhere, even "s[:len(t)] == t" is usually faster 
than "s.startswith(t)" for short prefixes, where "short" is a lot longer 
than you may think).

</F>



From kay.schluehr at gmx.net  Sat Sep 23 07:04:53 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 23 Sep 2006 04:04:53 -0700
Subject: Python and checked exceptions
Message-ID: <1159009493.872015.33880@d34g2000cwd.googlegroups.com>

A new cookbook recipe suggesting two decorators @throws and @catches
for treatment of checked exceptions in Python:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498131

This might be of practical interest for some and theoretical interest
for others - in particular those who know checked ex as a language
feature of Java.

Regards,
Kay



From DustanGroups at gmail.com  Sat Sep 23 21:18:18 2006
From: DustanGroups at gmail.com (Dustan)
Date: 23 Sep 2006 18:18:18 -0700
Subject: webbrowser module's Firefox support
In-Reply-To: <1159058211.224462.54760@m7g2000cwm.googlegroups.com>
References: <1159049410.054284.126220@b28g2000cwb.googlegroups.com>
	<1159052232.734611.211860@m7g2000cwm.googlegroups.com>
	<1159053936.813103.38840@d34g2000cwd.googlegroups.com>
	<1159056130.721134.145060@m73g2000cwd.googlegroups.com>
	<1159056914.662797.216540@m73g2000cwd.googlegroups.com>
	<1159058211.224462.54760@m7g2000cwm.googlegroups.com>
Message-ID: <1159060698.479175.264950@d34g2000cwd.googlegroups.com>


MonkeeSage wrote:
> Dustan wrote:
> > That didn't work either.
>
> Well, I'm out of ideas. It's also odd that it was being read as
> webbrowser.BackgroundBrowser...whatever that is! It should have been
> webbrowser.Mozilla.

Thanks anyway; you have helped me tremendously. I'm sure I'll get
somewhere with this...

> > Another thing: your fix is only temporary. Is there a way to make it
> > work even after I close IDLE? I changed the command you gave me a bit
> > so it doesn't get rid of the other paths:
> >
> > os.environ["PATH"]+=";C:\Program Files\Mozilla Firefox;" # can't
> > remember the path for firefox right now...
> >
> > But either way, it ends up going right back to the previous value after
> > I close IDLE.
>
> Yeah, sorry about that, I meant to mention that changes to os.environ
> only last for the life of the python process. To set / change
> environment variables like PATH permanently, check out this page:
> http://www.cims.nyu.edu/systems/platforms/windows/setpath.html

Great! Thanks!

> Regards,
> Jordan



From bernd at ewill.de  Mon Sep 25 15:09:52 2006
From: bernd at ewill.de (BerndWill)
Date: Mon, 25 Sep 2006 21:09:52 +0200
Subject: SSL meta data
Message-ID: <ef99ht$ih2$1@svr7.m-online.net>

Hello everybody,

 please help me with this topic:

 Working at a big company (+100.000 employees worldwide), we have an amount 
of data centers and shared services where our webservers, backend server 
etc. are located.

Now it happens from time to time, that certificates are expired and instead 
of our data centers organizing new certificates in time, we often are faced 
with expired certificates and offline connections.

 The only solution from me and my colleagues view (as poor at it sounds) is 
to setup a little python script "pinging" an amount of about 2.000 servers 
in daily intervals checking for the validity of those SSL certificates.

 Though there is a lot of examples demonstrating how to access SSL 
connections, I could not find a documentation about the certificate's data 
(validation information).

I would love to read programmatically some information out of the 
certificates itself (who signed it and what is the validation period, i.e. 
meta data).

 Can someone please help me out here !?

(I know we should better setup a database with validation dates, but believe 
me, we didn't succeed in it)

 Thanks in advance for any help or tip

 Regards

Bernd




From isalazar80 at yahoo.com.mx  Tue Sep 12 17:16:39 2006
From: isalazar80 at yahoo.com.mx (itzel)
Date: 12 Sep 2006 14:16:39 -0700
Subject: Create TarFile using python
In-Reply-To: <ee72ct$7mq$1@news-int.gatech.edu>
References: <1158086259.439424.96720@b28g2000cwb.googlegroups.com>
	<ee70qb$ean$1@online.de> <ee72ct$7mq$1@news-int.gatech.edu>
Message-ID: <1158095799.460191.183390@e63g2000cwd.googlegroups.com>

yes, i did. I'm checking the link in ASPN and I think that it'll works
for "my problem" ....thanks a lot!! One more question... I'll need do
it frecuently: add more directories into the same block. Is the same
procedure?

Thanks!!!

ps. sorry about gramatic, I don't write english frecuently....


Yu-Xi Lim ha escrito:

> Peter Maas wrote:
>
> > Did you look here?:
> >
> > http://docs.python.org/lib/tar-examples.html
> >
> > Peter Maas, Aachen
> 
> It doesn't show him how to archive a directory.



From steven.bethard at gmail.com  Wed Sep 13 15:18:45 2006
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 13 Sep 2006 13:18:45 -0600
Subject: Dice gen and analyser script for RPGs: comments sought
In-Reply-To: <1158168740.463026.39170@i42g2000cwa.googlegroups.com>
References: <050920060217482624%richardb@sailmaker.co.nospam.uk>
	<1158168740.463026.39170@i42g2000cwa.googlegroups.com>
Message-ID: <vLWdnXqNIeIFxJXYnZ2dnUVZ_uydnZ2d@comcast.com>

George Sakkis wrote:
> * [personal preference]: Don't leave space between *every* operator in
> expressions, group them based on precedence. E.g. instead of "(n *
> sigmaSq - sigma * sigma) / (n * n)", I read it easier as "(n*sigmaSq -
> sigma*sigma) / (n*n).

The spaced-out version is more `PEP 8`_ compliant.  Under "Whitespace in 
Expressions and Statements -> Other Recommendations" it says "Use spaces 
around arithmetic operators" and gives a few examples of "Yes" usage 
that look much like the OP's usage.

That said, I also tend to omit the spaces around multiplicative 
operators (though I'm slowly training myself out of that).  As you say, 
in the end, this is really a matter of personal preference.

.. _PEP 8: http://www.python.org/dev/peps/pep-0008/


STeVe


From duncan.booth at invalid.invalid  Fri Sep 22 03:18:39 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 22 Sep 2006 07:18:39 GMT
Subject: Strange behaviour of 'is'
References: <eeus5f$h7c$1@mailhub227.itcs.purdue.edu>
	<87psdozu2n.fsf@benfinney.id.au>
	<mailman.441.1158899129.10491.python-list@python.org>
Message-ID: <Xns984654883320Eduncanbooth@127.0.0.1>

Steve Holden <steve at holdenweb.com> wrote:

> Absolutely correct. It would be more interesting to discuss how the 
> output from these statements varied between (say) CPython, Jython and 
> Iron Python. At the moment the discussion is indeed about insignificant 
> implementation trivia.

CPython seems to collapse identical float values if they are in the same 
compilation unit:

>>> x = 2.
>>> y = 2.
>>> x is y
False
>>> x = 2.; y = 2.
>>> x is y
True
>>> y = [2., 2.]
>>> y[0] is y[1]
True

IronPython doesn't collapse them even when they are in expression:

IronPython 1.0.60816 on .NET 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.
>>> x = 2.
>>> y = 2.
>>> x is y
False
>>> x = 2.; y = 2.
>>> x is y
False
>>> y = [2., 2.]
>>> y[0] is y[1]
False

JPython seems to behave in a similar manner to CPython:

Python command console - JPython 2.1

>>> x = 2.
>>> y = 2.
>>> x is y
0

>>> x = 2.; y = 2.
>>> x is y
1

>>> y = [2., 2.]
>>> y[0] is y[1]
1

>>> 

Sorry, I don't have a more recent Jython implementation to hand to complete 
the comparison.


From duikboot at localhost.localdomain  Fri Sep  8 05:27:07 2006
From: duikboot at localhost.localdomain (db)
Date: Fri, 08 Sep 2006 11:27:07 +0200
Subject: Javadoc style python manual?
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.08.09.26.58.234569@localhost.localdomain>

On Fri, 08 Sep 2006 01:11:06 -0700, xiong.xu.cn wrote:

> Hi there,
> 
> I'm new to python and I'm from the java world.
> Though I love to learn python, I'm not very comfortable with the python
> documentation.
> Because when i read jdk doc, i can see the class hierachy, class
> member, class methods etc in html docs. It's very easy for me to
> understand the Java language.
> But in python, i find it kind of inconvient.
> 
> Any advice?
> 
> Thx,
> Xiong

pydoc is something I know, it is included in the standard distibution



From bdesth.quelquechose at free.quelquepart.fr  Thu Sep 28 15:23:25 2006
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 28 Sep 2006 21:23:25 +0200
Subject: how do you know if open failed?
In-Reply-To: <451c0669$0$19689$88260bb3@free.teranews.com>
References: <1159467363.032023.280560@m7g2000cwm.googlegroups.com>
	<451c0669$0$19689$88260bb3@free.teranews.com>
Message-ID: <451c1d7c$0$32693$626a54ce@news.free.fr>

tobiah a ?crit :
> SpreadTooThin wrote:
> 
>> f = open('myfile.bin', 'rb')
>>
>> How do I know if there was an error opening my file?
>>
> try:
>         open('noexist')
> except:
>         print "Didn't open"
> 

Should be:

try:
   f = open('noexists')
except IOError, e:
   print >> sys.stderr, "Failed to open 'noexists' : %s" % e



From tony.bedford at gmail.com  Mon Sep 25 13:37:55 2006
From: tony.bedford at gmail.com (codefire)
Date: 25 Sep 2006 10:37:55 -0700
Subject: Talking to marketing people about Python
References: <roy-D4C452.19080324092006@reader2.panix.com>
Message-ID: <1159205875.573485.19930@i3g2000cwc.googlegroups.com>

Might be handy to point out that the Python version will be easier (and
therefore cheaper) to maintain compared to the Perl version. As someone
said there are numerous success stories at python.org.

You could also point him at :

http://www.tiobe.com/tpci.htm

Although Perl is higher than Python (by one place) you will noticed
that Perl activity is in sharp decline in contrast to Python's steady
growth.

I think Google also gives a pretty big endorsement of Python (as you
wanted the marketing angle).

Cheers,
Tony



From cjlesh at gmail.com  Mon Sep 11 21:54:56 2006
From: cjlesh at gmail.com (cjl)
Date: 11 Sep 2006 18:54:56 -0700
Subject: Running python from a usb drive
In-Reply-To: <1158024872.905234.117100@m73g2000cwd.googlegroups.com>
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
	<1158024872.905234.117100@m73g2000cwd.googlegroups.com>
Message-ID: <1158026095.979937.206300@i42g2000cwa.googlegroups.com>

Hey all:

It seems no matter what I do the %1 gets replaced by paramaters sent to
the batch file...there must be some way of "escaping" this, but I can't
find the answer (yet) with google. Anyone?

-CJL



From onurb at xiludom.gro  Thu Sep 21 15:06:03 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Thu, 21 Sep 2006 21:06:03 +0200
Subject: How to return an "not string' error in function?
In-Reply-To: <1158856111.375288.216950@h48g2000cwc.googlegroups.com>
References: <1158847786.976197.219230@d34g2000cwd.googlegroups.com>
	<mailman.416.1158848492.10491.python-list@python.org>
	<1158848968.493858.96600@k70g2000cwa.googlegroups.com>
	<71oau3-vr5.ln1@lairds.us>
	<1158855308.877117.187050@b28g2000cwb.googlegroups.com>
	<4512bcaf$0$609$636a55ce@news.free.fr>
	<1158856111.375288.216950@h48g2000cwc.googlegroups.com>
Message-ID: <4512e29c$0$32387$636a55ce@news.free.fr>

breakfastea at gmail.com wrote:
(please, *stop* top-posting - corrected)

> Bruno Desthuilliers wrote:
>>
>> breakfastea at gmail.com wrote:
>> (OT : please dont top-post)
>>
>>> What I tried to do is to write a string.split() module,
>> So don't waste time:
>>
>>>>> "ab eced f aazaz".split()
>> ['ab', 'eced', 'f', 'aazaz']
>>>>> "ab-eced-ff-aazaz".split('-')
>> ['ab', 'eced', 'ff', 'aazaz']
>>
> Thank you for your reminder:)
> 
> However I saw the split() function in the first place and that why I'm
> trying write one myself:)

Ok. Then if it's for learning, let's have a look :)

> def spilt(a):

def split(astring, sep=' '):

>     l=[]
>     index=0
>     if not isinstance(a, basestring): #Or isinstance(a, str)
>         return

It's an error, so you don't want to pass it silently:

      if not isinstance(astring, basetring):
          raise TypeError('expected a string or unicode, got : %s' \
                           % type(astring)

>     for i in len(a):

The common idiom is : "for item in sequence:". If you need indexes too,
use enumerate: "for i, char in enumerate(astring):".

But anyway, you may want to have a look at str.find() or str.index().

>         if a[i]=' ':
>             item=a[index:i]
>             l.append(item)


Good luck...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From free.condiments at gmail.com  Thu Sep 14 18:11:23 2006
From: free.condiments at gmail.com (Sam Pointon)
Date: 14 Sep 2006 15:11:23 -0700
Subject: Specify string with uniform indentation ignored
In-Reply-To: <4509b7df$0$19672$88260bb3@free.teranews.com>
References: <4509b7df$0$19672$88260bb3@free.teranews.com>
Message-ID: <1158271883.710830.83360@k70g2000cwa.googlegroups.com>

tobiah wrote:
> Like a docstring, I would like to specify a string such as:
>
> def thing:
>
> 	string = """
> 		function otherlang(){
> 			doit()
> 		}
> 	"""
>
> And have the string end up actually being defined as:
>
> """
> function otherlang(){
> 	doit()
> }
> """
>
> Is there a built in way to do this?  I don't much
> care for:
>
> 	string = "function otherlang(){"
> 	string += "	doit()"
> 	string += "}"

textwrap.dedent ought to do exactly what you want.

--Sam



From sjmachin at lexicon.net  Wed Sep 13 03:31:47 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 00:31:47 -0700
Subject: How can I get the function's caller?
In-Reply-To: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
References: <1a62yy4pewt9t$.1eota436cq5jf$.dlg@40tude.net>
Message-ID: <1158132707.092664.16260@i3g2000cwc.googlegroups.com>


David wrote:
> Inside a function I need to get the function's caller's name. How can I get
> it?
>

Check out the thread "__LINE__ and __FILE__ functionality in Python?"
(messages posted 2006-0813).



From ptmcg at austin.rr._bogus_.com  Thu Sep 14 17:34:33 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Thu, 14 Sep 2006 21:34:33 GMT
Subject: How to convert a timedelta object to a string?
References: <mailman.104.1158267229.10491.python-list@python.org>
Message-ID: <JVjOg.1836$vD2.1096@tornado.texas.rr.com>

"Carl J. Van Arsdall" <cvanarsdall at mvista.com> wrote in message 
news:mailman.104.1158267229.10491.python-list at python.org...
> Basically I used the datetime module and timedelta objects to calculate a 
> difference between two times.  Now I'm trying to figure out how I make 
> that time delta a string HH:MM:SS to show elapsed time.  I've spent tons 
> of time looking at the module's documentation but I'm not seeing how those 
> methods will help me.  Can anyone help me with this?
> Here's what I'm trying to do, assum that resultsDict is a dictionary of 
> objects that have various pieces of information including a start time and 
> a stop time that are strings which I extracted from a file in an earlier 
> part of the program.  I use regEx to split up the hours, minutes, and 
> seconds and create timedelta objects, which I then subtract to get the 
> different.  What I need is to get the value in duration as HH:MM:SS as a 
> string:
>
>

>From the Python console:

>>> startTime = datetime.timedelta(seconds=45,minutes=22,hours=10)
>>> stopTime = datetime.timedelta(seconds=25,minutes=2,hours=4)
>>> delta = startTime-stopTime
>>> time.strftime("%H:%M:%S",time.gmtime(delta.seconds))
'06:20:20'

-- Paul 




From flupke at nonexistingdomain.com  Tue Sep 26 11:01:54 2006
From: flupke at nonexistingdomain.com (flupke)
Date: Tue, 26 Sep 2006 15:01:54 GMT
Subject: odbc DbiDate date conversion
In-Reply-To: <1159282560.427973.173510@k70g2000cwa.googlegroups.com>
References: <YY9Sg.97263$%T7.1319040@phobos.telenet-ops.be>
	<1159278687.772964.245190@b28g2000cwb.googlegroups.com>
	<z%aSg.97360$AF6.1413172@phobos.telenet-ops.be>
	<1159282560.427973.173510@k70g2000cwa.googlegroups.com>
Message-ID: <ChbSg.97386$uU7.1346693@phobos.telenet-ops.be>

Frank Millman schreef:
<snip>

> Well waddyaknow - I get exactly the same, for dates earlier than
> 1970-01-02. Thanks for finding a bug that would have bitten me sooner
> or later.
> 
> I will do some investigation. If I find an answer I will post it here,
> unless some kind soul saves me the trouble and beats me to it.
> 
> Frank
> 

Thanks for investigating it so far Frank.

Is there a workaround to parse that date and get the date info that i want?

Regards,
Benedict


From sjmachin at lexicon.net  Tue Sep 19 21:12:30 2006
From: sjmachin at lexicon.net (John Machin)
Date: 19 Sep 2006 18:12:30 -0700
Subject: xlrd number of rows in worksheet (was: Re: Pre-defining an action
	to take when an expected error occurs)
In-Reply-To: <1158713867.736359.73760@i42g2000cwa.googlegroups.com>
References: <1158288035.021277.97520@b28g2000cwb.googlegroups.com>
	<1158292554.492485.143690@h48g2000cwc.googlegroups.com>
	<1158293275.003995.202010@h48g2000cwc.googlegroups.com>
	<1158303569.603466.36130@e3g2000cwe.googlegroups.com>
	<1158339345.603379.61610@b28g2000cwb.googlegroups.com>
	<450D03F1.3000509@lexicon.net>
	<1158713867.736359.73760@i42g2000cwa.googlegroups.com>
Message-ID: <1158714750.657508.46050@h48g2000cwc.googlegroups.com>


Tempo wrote:
> It worked. Those two functions (usefulness_of_cells &
> number_of_good_rows) seem to work flawlessly...knock on wood. I have
> run a number of different Excel spreadsheets through the functions, and
> so far the functions have a 100% acuracy rating. The acuracy rating is
> based on the functions' returned number of cells containing text,
> excluding a space as text,  against the actual, hand counted number of
> cells with text.

So your worksheet(s) did have rows at the end with cells with spaces in
them?

> Thank you John Machin for all of your help. I am using
> these two functions, with your name tagged to them both. Let me know if
> that's a problem. Thank you again.

Not a problem; like I said, I'll put those functions in the next
release as examples.

Cheers,
John



From deets at nospam.web.de  Tue Sep 19 04:13:06 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 19 Sep 2006 10:13:06 +0200
Subject: Python programs always open source?
In-Reply-To: <mailman.246.1158625452.10491.python-list@python.org>
References: <450d07e1$0$19729$88260bb3@free.teranews.com>	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>	<mailman.227.1158581355.10491.python-list@python.org>	<450eb358$0$19900$4d3efbfe@news.sover.net>	<mailman.233.1158592608.10491.python-list@python.org>	<450ebb84$0$19909$4d3efbfe@news.sover.net>
	<mailman.246.1158625452.10491.python-list@python.org>
Message-ID: <4n9n4iF99lbqU1@uni-berlin.de>

Ben Finney schrieb:
> Leif K-Brooks <eurleif at ecritters.biz> writes:
> 
>>>> Ben Finney wrote:
>>>>> So long as you're not distributing some or all of Python itself,
>>>>> or a derivative work, the license for Python has no legal effect
>>>>> on what license you choose for your own work.
> 
>> I was replying to Ben Finney's claim that in a hypothetical world
>> where Python was licensed under the GPL, there would still be no
>> restriction on distributing Python programs under a closed-source
>> license.
> 
> My claim (and IANAL) is that it doesn't matter *what* license Python
> is distributed under; unless you do something with Python that is a
> right of the copyright holder, such as distributing part or all of
> Python, the copyright license terms of Python have no legal effect on
> what license you choose for your own work.

IANAL - having said that:

Not true for the GPL. Part of python is the library, which you either 
use explicit (I can't imagine a program that doesn't, beyond print 
"hello world"), or implicit (sys and os are AFAIX used internally to 
bootstrap the interpreter)

And the GPL exactly requires that when a library licensed under it is 
used, that makes the using program GPL-licensed, too.

And the LGPL (L for lesser or library) remedies that.

If I recall correctly, the LGPL stats that you might use the headers and 
link against a LGPL-lib as long as you don't change it, and you are ok.

So - I would certainly be very cautious when using GPL-based products if 
I wanted to build some closed-source-application on top of it.

Diez


From jaysherby at gmail.com  Fri Sep 15 21:16:41 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 18:16:41 -0700
Subject: mp3 libs and programs
Message-ID: <1158369401.262011.256700@b28g2000cwb.googlegroups.com>

I'm writing a python script that involves playing mp3 files.  The first
approach I had was sending commands to unix command-line programs in
order to play them.  I tired mpg123 and moosic, but there was a key
feature to my program's success that's missing.  SEEK!  I need to be
able to start playing a song at an arbitrary point in the song.  I
can't find anything to let me do this.  Does anyone have any advice or
has anyone needed something similar?



From oripel at gmail.com  Sun Sep 10 08:38:30 2006
From: oripel at gmail.com (oripel)
Date: 10 Sep 2006 05:38:30 -0700
Subject: Function metadata (like Java annotations) in Python
In-Reply-To: <1157862328.875664.189490@m73g2000cwd.googlegroups.com>
References: <1157854408.914299.60380@e3g2000cwe.googlegroups.com>
	<1157862328.875664.189490@m73g2000cwd.googlegroups.com>
Message-ID: <1157891910.716355.82150@e3g2000cwe.googlegroups.com>

Thanks!

Now I see it's accepted to assume nice decorators that update __dict__.
At least until __decorates__ or something similar is added...

fumanchu wrote:
> oripel wrote:
> > I'm trying to attach some attributes to functions and methods, similar
> > to Java annotations and .NET attributes.
> > ...
> > Assigning attributes to the function will work, as will assigning keys
> > and values to a dictionary in an attribute. But if there are more
> > decorators in the way, this could fail:
> >
> > @onedec
> > @attr(...)
> > @twodec
> > def foo():
> >   ...
> >
> > Given 'foo' now, how do I find the attributes?
> > ...
> > Any thoughts? Am I rehashing something old that my search skills didn't
> > uncover?
>
> There are past discussions about this; google for "python-dev decorator
> metadata". For example:
> http://thread.gmane.org/gmane.comp.python.devel/77506/focus=77507
>
>
> Robert Brewer
> System Architect
> Amor Ministries
> fumanchu at amor.org



From felipe.lessa at gmail.com  Mon Sep 25 19:42:37 2006
From: felipe.lessa at gmail.com (Felipe Almeida Lessa)
Date: Mon, 25 Sep 2006 20:42:37 -0300
Subject: does anybody earn a living programming in python?
In-Reply-To: <ef9pbk$u0j$1@sea.gmane.org>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<ef9pbk$u0j$1@sea.gmane.org>
Message-ID: <c2701f5c0609251642p5c7adb8dqdb77ad022a594d6a@mail.gmail.com>

2006/9/25, Robert Kern <robert.kern at gmail.com>:
> walterbyrd wrote:
> > If so, I doubt there are many.
> >
> > I wonder why that is?
>
> Well I do. So do the other dozen or so developers at my company. We're looking
> to hire a few more, in fact.

And there are also those ReportLab guys:

www.reportlab.com

-- 
Felipe.


From emlyn at brizzle.com  Fri Sep  8 20:46:58 2006
From: emlyn at brizzle.com (ml1n)
Date: 8 Sep 2006 17:46:58 -0700
Subject: Map with an extra parameter
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
	<1157760537.816693.243780@d34g2000cwd.googlegroups.com>
	<1157761277.421434.233500@h48g2000cwc.googlegroups.com>
	<1157761850.196163.323930@e3g2000cwe.googlegroups.com>
Message-ID: <1157762818.892803.119360@d34g2000cwd.googlegroups.com>

bearophileHUGS at lycos.com wrote:
> ml1n wrote:
> > In the interests of speed my thinking was that using map would move the
> > loop out of Python and into C, is that the case when using list
> > comprehension?  I'd always thought it was just syntatic short hand for
> > a Python loop.
>
> In Python the faster things are often the most simple.
> You can time your code to see what's faster.
> And even better you may try the simpler solution, and if the program
> results too much slow with a profiling you can find the spots needing
> improvements.
>
> Bye,
> bearophile

Looks like someone already did:
http://mail.python.org/pipermail/python-list/2005-January/259870.html

Thanks for the shove in the right direction.

M.



From http  Tue Sep  5 22:30:36 2006
From: http (Paul Rubin)
Date: 05 Sep 2006 19:30:36 -0700
Subject: threading support in python
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
	<hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
	<1157476298.716537.109330@h48g2000cwc.googlegroups.com>
Message-ID: <7xbqptybeb.fsf@ruckus.brouhaha.com>

"sjdevnull at yahoo.com" <sjdevnull at yahoo.com> writes:
> > I think it's even worse. The standard Python library offers
> > shared memory, but not cross-process locks.
> 
> File locks are supported by the standard library (at least on Unix,
> I've not tried on Windows).  They work cross-process and are a normal
> method of interprocess locking even in C code.

I may be missing your point but I didn't realize you could use file
locks to synchronize shared memory in any useful way.  File locks are
usually made and released when the file is opened and closed, or at
best through flock or fcntl calls.  Shared memory locks should
generally be done with mechanisms like futex, that in the no-wait case
should not involve any system calls.


From onurb at xiludom.gro  Fri Sep  8 05:38:52 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 08 Sep 2006 11:38:52 +0200
Subject: Question about subclassing - version 2
In-Reply-To: <1157702727.358576.24280@m79g2000cwm.googlegroups.com>
References: <1157699030.961309.116070@p79g2000cwp.googlegroups.com>
	<1157701901.506736.45610@p79g2000cwp.googlegroups.com>
	<1157702727.358576.24280@m79g2000cwm.googlegroups.com>
Message-ID: <45013a2d$0$27222$636a55ce@news.free.fr>

Frank Millman wrote:
> bearophileHUGS at lycos.com wrote:
>> There aren't abstract classes in Python. They are all
>> concrete. 
(snip)
> I use the term 'abstract class' in the abstract sense :-)
> 
> Say I have three classes where 90% of the attributes and methods are
> common. It makes sense to create a base class with these attributes and
> methods, and turn each of the three classes into a subclass which
> inherits from the base class and overrides the bits that are unique to
> each one.
> 
> This is what I call an abstract class. Maybe there is a more correct
> term.

Depends if instanciating this base class would make any sense.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From esj at harvee.org  Mon Sep  4 15:51:38 2006
From: esj at harvee.org (Eric S. Johansson)
Date: Mon, 04 Sep 2006 15:51:38 -0400
Subject: building helper executables with distutils
Message-ID: <edi04i$61q$1@sea.gmane.org>

I have a module which needs to invoke a suid helper program in order to 
do what it needs to do.  This suid helper program needs to be built and 
installed at the same time as the module.

Is there any way to do this with distutils?  I've been looking through 
the documentation but haven't really found any way to do it except maybe 
by invoking a system call running a script to do the suid build process.



From usenet at vfx.org.uk  Thu Sep 28 08:49:43 2006
From: usenet at vfx.org.uk (Mike Playle)
Date: Thu, 28 Sep 2006 13:49:43 +0100
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>
	<mailman.847.1159402807.10491.python-list@python.org>
Message-ID: <pan.2006.09.28.12.49.40.745821@vfx.org.uk>

On Thu, 28 Sep 2006 10:19:37 +1000, Ben Finney wrote:
>> For instance a customer might want to buy a license to use your
>> software on up to 5 machines at once, but still have the software
>> installed on every machine in the company.
> 
> This need is adequately served by not imposing usage restrictions. Any
> effective imposition of usage restrictions is hostile to the wants of
> the user.

Who is "the user"? The person who uses the software isn't always
the same as the person who paid for it, or the person who'll be
in trouble if the license terms aren't adhered to.

Imagine you're an IT manager for a medium-to-large company who
wants to use some expensive piece of software. You talk to the
vendor and buy a licence to use the software on up to 5 machines
at once, but you don't know who in the company will want to use
it, so for convenience you want to install it on every PC in the
building.

Having installed it all over the shop, how can you be sure that
only 5 people are using it at any one time? Do you expect your
users to walk round the building asking everyone else if they're
using the software, or are they more likely to just start it up
and start working?

Of course this argument really applies only to large, expensive
commercial packages. I'd certainly agree that licence keys are
often used inappropriately in a way which doesn't really benefit
anyone, but this doesn't mean they don't have a place somewhere
in the grand scheme of things.

Mike



From fredrik at pythonware.com  Sat Sep  2 02:32:53 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 02 Sep 2006 08:32:53 +0200
Subject: Incremental Progress Report object/closure?
In-Reply-To: <7.0.1.0.0.20060901161733.03406c98@yahoo.com.ar>
References: <1157134065.116944.70270@m79g2000cwm.googlegroups.com>
	<7.0.1.0.0.20060901161733.03406c98@yahoo.com.ar>
Message-ID: <edb8ik$ca6$1@sea.gmane.org>

Gabriel Genellina wrote:

> What about a simple:
> 
> print "Time elapsed: blah blah blah\r" % whatever,
> 
> (notice the \r and the final , )

to avoid messing up the output when you're leaving the loop, or if 
something goes wrong inside the loop, it's usually better to *start* 
with a carriage return:

     print "\rTime elapsed: blah blah blah" % whatever,

</F>



From amit.man at gmail.com  Mon Sep 11 07:18:47 2006
From: amit.man at gmail.com (noro)
Date: 11 Sep 2006 04:18:47 -0700
Subject: efficient text file search.
Message-ID: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>

Is there a more efficient method to find a string in a text file then:

f=file('somefile')
for line in f:
    if 'string' in line:
         print 'FOUND'

?

BTW:
does "for line in f: " read a block of line to te memory or is it
simply calls f.readline() many times?

thanks
amit



From jpgreenwald at gmail.com  Sun Sep  3 08:36:51 2006
From: jpgreenwald at gmail.com (jpgreenwald)
Date: 3 Sep 2006 05:36:51 -0700
Subject: User defined functions through Automation in Excel 2003
References: <1157270501.997826.279790@74g2000cwt.googlegroups.com>
Message-ID: <1157287011.801832.312350@p79g2000cwp.googlegroups.com>

Ive been looking more into this subject and now have a few things to
add.  Im using some c# code that works in doing what I want (adds the
function into excel):

using System;
using System.Runtime.InteropServices;

namespace jtest {
    [ClassInterface(ClassInterfaceType.AutoDual)]
    public class test{
        public test(){
        }
        public double Add2(double x, double y) {
            return v1 + v2;
        }
    }
}

I messed arround with it and without
"[ClassInterface(ClassInterfaceType.AutoDual)]" the same thing happens
that happened in python;  the dll would load but the function is not
usuable.  So reading some more I was *thinking* that it was the early
bound calls allowed by the AutoDual Interface that I cant seem to easy
replicate in python.  Now I was *thinking* again that the only way to
replicate that would be to use a typelib but I do not know how to
generate that using a idl file I dont know how to create.  Again I was
*thinking* that if I had a typelib I could use makepy and then gencache
so when I use py2exe the typelib would be used and early bound calls
would be used.

Am I completely Insane and following a completely wrong thought process
here?  If not, how do I make a idl file (then use midl.exe ?), and then
make a tbl?  Thanks again for your thought.

-Jesse



From wildemar at freakmail.de  Fri Sep 15 06:54:34 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Fri, 15 Sep 2006 12:54:34 +0200
Subject: Python for science (was: Re: Looking for the Perfect Editor)
In-Reply-To: <2apOg.1348$6S3.655@newssvr25.news.prodigy.net>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>	<mailman.48.1158174903.10491.python-list@python.org>	<1158183392.526021.212220@d34g2000cwd.googlegroups.com>	<Y94Og.938$TV3.21@newssvr21.news.prodigy.com>	<mailman.74.1158226021.10491.python-list@python.org>
	<2apOg.1348$6S3.655@newssvr25.news.prodigy.net>
Message-ID: <450A866A.3060304@freakmail.de>

David J. Braden wrote:
> I've come to sense, in the last (many) threads and topics brought up 
> that I have read in the last 3 weeks, that this NG attracts folks who 
> are very much into the web-app interface potential and usefulness of 
> Python, as you yourself seem to be (see following), and others, such as 
> I, who appreciate its power for technical apps, such as hard-core stats, 
> optimization, and integration with even more sophisticated off-the-shelf 
> apps, as well as home-brewed stuff, hopefully even original algorithms. 
>   I have seen, several times in this NG, references to "scientific 
> stuff". I take it to mean apps meant for, or used by, folks in 
> engineering, physics, applied mathematics, exploratory theoretical stats 
> and practical applied stats (at a very high level) --- these users have 
> PhDs in areas dealing with "scientific stuff". What's *your* view take 
> on this?
> 
I use python purely for personal coding, so I cannot give you much 
advice on scientific use of python. I understand however that it is very 
much used for what you describe. I still don't know what you're asking 
exactly, so I hope that's what you wanted to hear.


>> You might want to look at python packages such as scipy (?) or numpy 
>> (for numerical calculations) or whatever those are called.
> 
> "Whatever those ..." ?!? Maybe this clarifies my response.
Scipy: http://www.scipy.org/
Numpy: http://numpy.scipy.org/ (maybe that explains my confusion ;))
Scientific Python: http://sourcesup.cru.fr/projects/scientific-py/

Better?

> Thanks. I hope to very soon. Potential interactions with other APIs are 
> keeping me up nights. I could use your help on one of these in the near 
> future.
By 'you' you certainly mean the newsgroup, right? 'Cause I know nothing 
of that.

>>> I am not interested in Web/html apps.
>> Too bad, that's the future ;).
> 
> For whom?!? When? Been to a so-called 3rd-world country for an extended 
> period yet? Think Angola, Chad, ...
I. Was. Kidding.
Sort of ... :)
Seriously: Many people use it for the web, because python is just so 
darn good at it. An there is a trend towards web-based apps. There's n 
denying that.
Are you telling me that in, say, Angola they only use python for their 
hardcore scientific calculations? I don't quite get that argument. 
Though I understand your angle.

I'm out
wildemar


From gherron at islandtraining.com  Sat Sep 30 02:04:14 2006
From: gherron at islandtraining.com (Gary Herron)
Date: Fri, 29 Sep 2006 23:04:14 -0700
Subject: Python/UNO/OpenOffice?
In-Reply-To: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
References: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
Message-ID: <451E08DE.5000402@islandtraining.com>

kenneth.m.mcdonald at sbcglobal.net wrote:
> Are then any currently active and reasonably mature Python plugins/
> apis/whatever for programming/scripting OpenOffice? The page I've
> found is http://udk.openoffice.org/python/python-bridge.html, but
> it was last updated more than a year ago.
>
> Thanks,
> Ken
>   
I don't believe that information is out-of-date. I use the python-bridge
with the OpenOffice version 2.0.3 quite successfully. In my case I open
a spread sheet and search around for and extract various values. It
works just fine for me.

Gary Herron



From sjmachin at lexicon.net  Sat Sep 30 21:21:17 2006
From: sjmachin at lexicon.net (John Machin)
Date: 30 Sep 2006 18:21:17 -0700
Subject: Python/UNO/OpenOffice?
References: <gknTg.6721$e66.6260@newssvr13.news.prodigy.com>
	<slrnehs85g.ncj.sybrenUSE@schuimige.stuvel.eu>
Message-ID: <1159665677.378607.133720@k70g2000cwa.googlegroups.com>

Sybren Stuvel wrote:
> kenneth.m.mcdonald at sbcglobal.net enlightened us with:
> > Are then any currently active and reasonably mature Python plugins/
> > apis/whatever for programming/scripting OpenOffice? The page I've
> > found is http://udk.openoffice.org/python/python-bridge.html, but it
> > was last updated more than a year ago.
>
> Aside from what has already been said, it might be nice for you to
> read my article about OOo and Python at
> http://www.stuvel.eu/ooo-python ;-)

Hi, Sybren. I tried folloing your recipe on Windows with OOo 2.0 ...

Minor problem: the executable is called soffice, not ooffice.

Major problem: it crashed right at the start, somewhere in the maze of
dlls.

The following interactive session reproduces the problem:

| C:\Program Files\OpenOffice.org
2.0\program\python-core-2.3.4\bin>python

# OOo includes a complete python distribution. Note the directory name
says 2.3.4 ...

| Python 2.3.5 (#62, Feb  8 2005, 16:23:02) [MSC v.1200 32 bit (Intel)]
on win32

... but the program identifies itself as 2.3.5

| Type "help", "copyright", "credits" or "license" for more
information.
| >>> import sys
| >>> sys.path.append(r'C:\Program Files\OpenOffice.org 2.0\program')

# The above directory contains all the dlls plus a handful of python
files

| >>> import pyuno # from pyuno.dll; there's no other pyuno.*
| >>> _g_ctx = pyuno.getComponentContext()

# crash

Has anyone managed to get further than this on Windows (XP Pro, SP 2)?

Cheers,
John



From sturlamolden at yahoo.no  Fri Sep 29 10:37:43 2006
From: sturlamolden at yahoo.no (sturlamolden)
Date: 29 Sep 2006 07:37:43 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
In-Reply-To: <1159503458.273771.24310@m73g2000cwd.googlegroups.com>
References: <mailman.1984.1159445104.10490.python-list@python.org>
	<mailman.878.1159449832.10491.python-list@python.org>
	<1159475984.109684.227700@h48g2000cwc.googlegroups.com>
	<1159503458.273771.24310@m73g2000cwd.googlegroups.com>
Message-ID: <1159540662.970742.181010@k70g2000cwa.googlegroups.com>

MonkeeSage wrote:

> > def cons(car,cdr): return (car,cdr) # or [car,cdr]
> > def car(cons): return cons[0]
> > def cdr(cons): return cons[1]
>
> I guess you were talking about implementing the _structure_ of lisp
> lists in python syntax (as you seem to imply), not trying to emulate
> their _behavior_ with one-dimensional python lists.

The original poster was asking about using Python for teaching data
structures and algorithms, and the implementation details of Python
lists in particular. It may not be obvious that they are essentially
arrays under the hood.

The Lisp discussion became a digression; I was not trying to implement
Lisp in Python, but rather demonstrate the difference between Lisp
lists and Python lists.



From MonkeeSage at gmail.com  Fri Sep  8 21:14:10 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 8 Sep 2006 18:14:10 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<Xns9839C4FD80E2rtwfreenetREMOVEcouk@216.196.109.145>
	<1157761731.042621.77150@p79g2000cwp.googlegroups.com>
	<1157763615.547996.106780@h48g2000cwc.googlegroups.com>
	<7xejul6e2e.fsf@ruckus.brouhaha.com>
Message-ID: <1157764450.400530.187480@h48g2000cwc.googlegroups.com>

Paul Rubin wrote:
> "MonkeeSage" <MonkeeSage at gmail.com> writes:
> > Ps. I don't know if xrange is faster...I thought the difference was
> > that range created a temporary variable holding a range object and
> > xrange created an iterator?
>
> There's no such thing as a "range object"; range creates a list, which
> consumes O(n) memory where n is the number of elements.  xrange
> creates an xrange object, which is a reusable iterator of sorts.

Aha, thanks for explaining. :)

Regards,
Jordan



From safecom at memlane.com  Wed Sep  6 11:10:07 2006
From: safecom at memlane.com (safecom at memlane.com)
Date: Wed, 6 Sep 2006 10:10:07 -0500
Subject: No subject
Message-ID: <MAILAEJ0b6AffNkBISY0000523d@mail.buztronics.com>

The original message was included as attachment

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From belindalategan at hotmail.com  Fri Sep  1 12:50:59 2006
From: belindalategan at hotmail.com (lind)
Date: 1 Sep 2006 09:50:59 -0700
Subject: used to work at ungerer lab?
In-Reply-To: <mailman.10232.1157095597.27775.python-list@python.org>
References: <1157028103.075184.149250@i3g2000cwc.googlegroups.com>
	<mailman.10232.1157095597.27775.python-list@python.org>
Message-ID: <1157129459.409781.136900@i42g2000cwa.googlegroups.com>

I am looking for an old friend, used to work at a path lab in Pretoria,
dabbled in Scientology and rock climbing?  I know this is not
friendster.com, but I really have to get into contact with him.

Hendrik van Rooyen wrote:
> <vedran_dekovic at yahoo.com> Wrote:
>
>
> | Hi,
> | I need help about Tkinter listbox widget.I want,when somebody click on
> | any item(file)  in Listbox,then in new Label widget text must be
> | selected item from server.
> |
> | my program (wrong example):
> |
> | import ftputil
> | import Tkinter
> | root=Tkinter.Tk()
> | ftp=ftputil.FTPHost('some imaginary server')
> |
> | def LabelWidget(event):
> |     a=Tkinter.Label(root,text=)  # Text must be only name and file
> | format,example: sun.gif
> |     a.grid()
> |
> |
> |
> | b=Tkinter.Listbox(root)
> | b.insert(Tkinter.END,ftp._dir(''))
> | b.place()
> | c=Tkinter.Button(root,text='PRINT THIS FILE IN NEW LABEL WIDGET')
> | c.bind('<Button-1>',LabelWidget)
> | c.grid()
> | root.mainloop()
> |
> |
> | THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
>
> idx = b.curselection()        # - tells you which one was clicked
> StringValue = b.get(idx)     # - returns the text
> 
> HTH - Hendrik



From johnzenger at gmail.com  Tue Sep 26 13:21:12 2006
From: johnzenger at gmail.com (johnzenger at gmail.com)
Date: 26 Sep 2006 10:21:12 -0700
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
Message-ID: <1159291272.617534.177790@h48g2000cwc.googlegroups.com>

def transform(seq, size):
    i = 0
    while i < len(seq):
        yield tuple(seq[i:i+size])
        i += size

Neal Becker wrote:
> Any suggestions for transforming the sequence:
>
> [1, 2, 3, 4...]
> Where 1,2,3.. are it the ith item in an arbitrary sequence
>
> into a succession of tuples:
>
> [(1, 2), (3, 4)...]
>
> In other words, given a seq and an integer that specifies the size of tuple
> to return, then for example:
>
> seq = [a,b,c,d,e,f]
> for e in transform (seq, 2):
>   print e
> 
> would return
> (a,b)
> (c,d)
> (e,f)



From http  Mon Sep 25 15:17:45 2006
From: http (Paul Rubin)
Date: 25 Sep 2006 12:17:45 -0700
Subject: SSL meta data
References: <ef99ht$ih2$1@svr7.m-online.net>
Message-ID: <7xk63r21t2.fsf@ruckus.brouhaha.com>

"BerndWill" <bernd at ewill.de> writes:
> I would love to read programmatically some information out of the 
> certificates itself (who signed it and what is the validation period, i.e. 
> meta data).
> 
>  Can someone please help me out here !?

This is very cheesy but I sometimes I've just run the openssl command
line utility with popen and read the output:

  openssl x509 -text -noout -in certfile

will dump out the cert contents and you can parse it with regexps.

The right way to do it is to make the appropriate m2crypto (or
whatever) calls that parse the cert directly.


From gagsl-py at yahoo.com.ar  Tue Sep 12 01:00:41 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 02:00:41 -0300
Subject: Finding name of variable?
In-Reply-To: <42d22dbf0609050649pe2c3cc3sdd0f577351d87b3f@mail.gmail.com
 >
References: <42d22dbf0609050649pe2c3cc3sdd0f577351d87b3f@mail.gmail.com>
Message-ID: <7.0.1.0.0.20060912015309.038e2eb0@yahoo.com.ar>

At Tuesday 5/9/2006 10:49, Gardner Pomper wrote:

>I am writing a specialized xml serialization function, and I would 
>like to be able to serialize the value of a simple object with the 
>object name as the tag. For example:
>
>    first_name = 'Fred'
>
>   sXML = my_xml_serializer(first_name)
>
>should result in sXML = '<first_name>Fred</first_name>'
>
>I can get class and field names, but how do I find the name of a 
>simple variable?

There was a thread a few days ago about this - there are esoteric 
ways to obtain the object name(s), but I would use:
         sXML = my_xml_serializer('first_name',first_name)
because it's rather clear, and I think you would not use such things a lot.

Remember that a single object may be known as many names, or even 
anonymous - they are not unique.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From theller at python.net  Fri Sep 29 16:06:57 2006
From: theller at python.net (Thomas Heller)
Date: Fri, 29 Sep 2006 22:06:57 +0200
Subject: ctypes.c_void_p(-1) might not be C return (void *) -1
In-Reply-To: <1159486921.350295.190160@m7g2000cwm.googlegroups.com>
References: <1159464342.982140.200420@b28g2000cwb.googlegroups.com>	<mailman.900.1159468919.10491.python-list@python.org>
	<1159486921.350295.190160@m7g2000cwm.googlegroups.com>
Message-ID: <efjud3$i8p$1@sea.gmane.org>

p.lavarre at ieee.org schrieb:
>> I've started a wiki page where I already added an entry about the above question.
>> Do you think the entry would have answered your question?
>> http://starship.python.net/crew/theller/moin.cgi/CodeSnippets
> 
> As concise as I now can imagine, yes thank you.
> 
> I see the main point leads: "The truth value of any NULL ctypes pointer
> instance is False."  That angle neatly ducks my ongoing newbie
> confusion over a null constructed in Python via c_void_p(0) being
> different from a null constructed in C via return (void *) 0.
> 
>> ...
>> > And so then the next related Faq is:
>> >
>> > Q: How should I test for ((void *) -1)?
>>
>> For me, on Windows, c_void_p(-1).value is the same
>> as c_void_p(0xFFFFFFFF).value, but it is -1 not 0xFFFFFFFF.
> 
> Different results at my desk.  Specifically, I see:
> 
>>>> from ctypes import * ; c_void_p(-1).value
> 4294967295L
>>>>
> 
> in Mac OS X 10.4.7 Python 2.5 r25:51918 and Win XpSp2 Python 2.5
> r25:51908.

You are right, I was using my own private build of ctypes which behaves
differently.  With Python 2.5 on Windows, I get the same as you.

>> Worse, on 64-bit systems c_void_p(-1).value is 184467440737009661615, which
>> is the same as 0xFFFFFFFFFFFFFFFF.
>> So, to be portable, INVALID_HANDLE_VALUE should be defined like this:
>> INVALID_HANDLE_VALUE = c_void_p(-1).value
> 
> Exactly what I should have written, yes, thank you.
> 
> And somewhat generalisable: c_void_p(0).value is None.
> 
> Maybe this is the thing that's been astonishing me: maybe C often does
> return the .value of the pointer, rather than a new instance of the
> POINTER class?
> 
>> and your test would become
>> (ctypes.cast(pv, ctypes.c_void_p).value == INVALID_HANDLE_VALUE
> 
> Yes.
> 
> Mind you, typing out all that noise inspires me to ask, does (pv ==
> INVALID_HANDLE_VALUE) give the wrong answer for any pv other than
> c_void_p(-1)?  In other words, if by convention I get all my pointers
> from C and never construct a pointer in Python except to take its
> value, then can I safely write the more obvious translation of (pv ==
> INVALID_HANDLE_VALUE)?

Well, c_void_p(-1).value is the same as c_void_p(0xFFFFF...) for a sufficient
number of F's, so to speak.  The integer or long value you pass to c_void_p
is masked with a bitmask haing all bits set to '1' as the platform's (void *)
type has.

>> PS: It is inconsistent that the .value of a c_void_p instance is signed on
>> 32-bit systems, and unsigned on 64-bit systems, but it seems we have to live
>> with that.

Obviously, as you discovered, and I confirmed, this is no longer true.  In the Python2.5
ctypes, the value of c_void_p is always unsigned.  I just meant that we have to live
for quite some time with the behaviour of ctypes as implemented, because only bug
fixes can be made to Python 2.5.

Thomas (I'll probably leave for a few days now)



From richard.kessler at matteicos.com  Tue Sep 26 17:24:33 2006
From: richard.kessler at matteicos.com (richard.kessler at matteicos.com)
Date: 26 Sep 2006 14:24:33 -0700
Subject: Reading a file using a UNC - help!
In-Reply-To: <1159301192.615441.256710@i3g2000cwc.googlegroups.com>
References: <1159301192.615441.256710@i3g2000cwc.googlegroups.com>
Message-ID: <1159305873.403268.275850@d34g2000cwd.googlegroups.com>

Thanks very much all for responding....I got it working. As you
indicated, I just had mixed up my escapes (//) with my \n. When I got
the correct amount of backslashes and removed the linefeeds it worked
great.

Thanks again.



From python.list at tim.thechases.com  Mon Sep 18 18:47:52 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 18 Sep 2006 17:47:52 -0500
Subject: How to efficiently proceed addition and subtraction in python
	list?
In-Reply-To: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
References: <1158619411.713865.287810@m73g2000cwd.googlegroups.com>
Message-ID: <450F2218.7020301@tim.thechases.com>

> I have a list AAA = [1, 2, 3] and would like to subtract one from list
> AAA
> so AAA' = [0, 1, 2]
> 
> What should I do?


Sounds like a list comprehension to me:

 >>> a = [1,2,3]
 >>> a_prime = [x-1 for x in a]
 >>> a_prime
[0, 1, 2]

-tkc





From exarkun at divmod.com  Wed Sep 13 11:49:38 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Wed, 13 Sep 2006 11:49:38 -0400
Subject: [Twisted-Python] twisted.web2 and blank values in POST
In-Reply-To: <20060913154449.1717.2077133268.divmod.quotient.48074@ohm>
Message-ID: <20060913154938.1717.1188718345.divmod.quotient.48079@ohm>

Ugg, wrong list obviously.  Please disregard.  Sorry.


From ldo at geek-central.gen.new_zealand  Mon Sep 25 23:48:16 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 15:48:16 +1200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz>	<mailman.499.1159035571.10491.python-list@python.org>	<slrnehbra1.kpr.jon+usenet@snowy.squish.net>	<mailman.518.1159087749.10491.python-list@python.org>	<slrnehe9ub.rk8.jon+usenet@snowy.squish.net>	<mailman.563.1159190394.10491.python-list@python.org>	<slrnehfnch.6tm.jon+usenet@snowy.squish.net>	<mailman.569.1159192888.10491.python-list@python.org>	<slrnehfomg.6tm.jon+usenet@snowy.squish.net>	<ef8oqr$9pt$1@news.albasani.net>
	<slrnehfqc5.6tm.jon+usenet@snowy.squish.net>
	<mailman.579.1159199258.10491.python-list@python.org>
Message-ID: <efa7s5$pr2$4@lust.ihug.co.nz>

In message <mailman.579.1159199258.10491.python-list at python.org>, Fredrik
Lundh wrote:

> In article <ef8oqr$9pt$1 at news.albasani.net>, Georg Brandl wrote:
>>> I'm sorry, that's not good enough. How, precisely, would it break
>>> "existing code"? Can you come up with an example, or even an
>>> explanation of how it could break existing code?
>> 
>> Is that so hard to see? If cgi.escape replaced "'" with an entity
>> reference, code that expects it not to do so would break.
> 
> Sorry, that's still not good enough. Why would any code expect such a
> thing?
>>  
> that's not up to you to decide, though.

Yes it is. An HTML-quoting function converts a string to its HTML-compatible
representation. Since it is now HTML-compatible, any code that tries to
work with it afterwards has got to expect it to be HTML-compatible. Which
means it has to allow for what HTML allows.


From sandravandale at yahoo.com  Tue Sep  5 09:57:39 2006
From: sandravandale at yahoo.com (Sandra-24)
Date: 5 Sep 2006 06:57:39 -0700
Subject: Testing a website with HTTPS login and cookies
In-Reply-To: <mailman.14.1157459879.5279.python-list@python.org>
References: <mailman.14.1157459879.5279.python-list@python.org>
Message-ID: <1157464659.301510.303090@i3g2000cwc.googlegroups.com>


Hari Sekhon wrote:
> If anybody knows how to do this could they please give me a quick
> pointer and tell me what libraries I need to go read up on?
> 

One word. Selenium. 

-Sandra



From mail at microcorp.co.za  Fri Sep 29 01:58:57 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Fri, 29 Sep 2006 07:58:57 +0200
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>	<pan.2006.09.27.16.51.12.529785@vfx.org.uk>	<mailman.847.1159402807.10491.python-list@python.org>	<pan.2006.09.28.12.49.40.745821@vfx.org.uk><slrnehnqv2.ann.sybrenUSE@schuimige.stuvel.eu>
	<efgrus$o5n$1@sea.gmane.org>
Message-ID: <027301c6e3a3$6b1747a0$03000080@hendrik>

 "Steve Holden" <steve at holdenweb.com> Wrote:

> Sybren Stuvel wrote:
> > Mike Playle enlightened us with:
> >
> >>Imagine you're an IT manager for a medium-to-large company who wants
> >>to use some expensive piece of software. You talk to the vendor and
> >>buy a licence to use the software on up to 5 machines at once, but
> >>you don't know who in the company will want to use it, so for
> >>convenience you want to install it on every PC in the building.
> >>
> >>Having installed it all over the shop, how can you be sure that only
> >>5 people are using it at any one time?
> >
> >
> > Write the software in such a way that it needs a certificate on a
> > smartcard, then supply the company with five smartcards.
> >

And 500 smart card readers - can I quote for the job?


> And you guarantee that the contents of the smartcard is only used by one
> user at a time by building a licensing system for the smartcards?
>
> regards
>   Steve

Yes - this is the point - it makes a simple implementation increasingly complex
and paranoid - and is a large part of the cost that makes the software
expensive - the other part is called greed...

- Hendrik





From tdelaney at avaya.com  Tue Sep 12 20:28:37 2006
From: tdelaney at avaya.com (Delaney, Timothy (Tim))
Date: Wed, 13 Sep 2006 10:28:37 +1000
Subject: python reference counting and exceptions
Message-ID: <2773CAC687FD5F4689F526998C7E4E5FF1E99C@au3010avexu1.global.avaya.com>

Andreas Huesgen wrote:

> In c++, it is possible to write a locking system similar to the one
> below: 
> 
> 
> void myFunction()
> {
> 	# create a resource lock. Locks some resource
> 	ResourceLock myLock;
> 
> 	# the following line may throw an exception
> 	doStuff();
> }

RIIA - Resource Initialisation is Acquisition

Python is adding an RIIA mechanism in 2.5 - look at the "with"
statement.

Tim Delaney


From steve at REMOVE.THIS.cybersource.com.au  Sun Sep 24 00:17:17 2006
From: steve at REMOVE.THIS.cybersource.com.au (Steven D'Aprano)
Date: Sun, 24 Sep 2006 14:17:17 +1000
Subject: License / Registration key enabled software
References: <1158951061.539594.164040@i3g2000cwc.googlegroups.com>
	<n7YQg.3965$IA.3432@newssvr11.news.prodigy.com>
	<1159061998.460873.321180@m73g2000cwd.googlegroups.com>
Message-ID: <pan.2006.09.24.04.17.16.531242@REMOVE.THIS.cybersource.com.au>

On Sat, 23 Sep 2006 18:39:58 -0700, T wrote:

> 
> Umm...I was hoping for something simpler and more straight forward.  Is
> there a module that would be useful for this type of thing?

It really helps if you quote the relevant bits of the email you are
replying to. Otherwise, people who come along and see your post will ask
"Simpler than what? Module useful for what sort of thing? What is this
luser talking about?"

To implement a licence/registration key system in Python, you should first
answer a couple of simple questions:

Q1. Is my software so precious and special that users will put up with the
inconvenience and nuisance value of registration keys?

If the answer is No, then don't use registration keys. Find a different
model to make money: give the software away and charge for support, or
something. Using registration keys won't bring in money for you if your
users just stop using the software and use a competing product instead.

If the answer is Yes, then go on to question 2:

Q2. Are you sure?

If the answer is still Yes, then read this and see if it helps:
http://en.wikipedia.org/wiki/Keygen



-- 
Steven.



From wahab at chemie.uni-halle.de  Thu Sep 28 18:53:52 2006
From: wahab at chemie.uni-halle.de (Mirco Wahab)
Date: Fri, 29 Sep 2006 00:53:52 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <mailman.907.1159479390.10491.python-list@python.org>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>	<mailman.901.1159469166.10491.python-list@python.org>	<efhdt1$9a1$1@mlucom4.urz.uni-halle.de>
	<mailman.907.1159479390.10491.python-list@python.org>
Message-ID: <efhk2n$av0$1@mlucom4.urz.uni-halle.de>

Thus spoke Fredrik Lundh (on 2006-09-28 23:35):

> Mirco Wahab wrote:
> 
>> - why doesn't have Python such a simple and useful thing as to_binstr(...)
> 
> useful?  really?  for what?

I don't really know, but according to google,
people often ask exactly for that and there
is no reason at all why one shouldn't expect
to get a /bit string/ from "%b" %.

So if people think it's badly needed, how
couldn't it be *not* useful then? ;-)

It feels to me (as it does sometimes
when diving into Python, to be honest)
simply as a shortcoming, - and the ter-
nary operator included in 2.5 was
imho a huge step forward, next will
be mutable strings and arrays will be
'called arrays' somewhere ... ;-)

(maybe somebody reverses the -v/-V switch too, hey)

Regards

Mirco


From fakeaddress at nowhere.org  Tue Sep 12 20:51:48 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 13 Sep 2006 00:51:48 GMT
Subject: How to get the "longest possible" match with Python's RE module?
In-Reply-To: <mailman.320.1158045174.5279.python-list@python.org>
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
	<mailman.320.1158045174.5279.python-list@python.org>
Message-ID: <ECINg.1207$IA.290@newssvr11.news.prodigy.com>

Tim Peters wrote:

> [Bryan Olson]
>> Unfortunately, the stuff about NFA's is wrong. Friedl's awful
>> book
> 
> Strongly disagree: [...]

I know I'm disagreeing with a lot of smart people in panning
the book.

>> What Python uses is search-and-backtrack. Unfortunately such
>> engines don't have much theory behind them, and it's hard to
>> reason generally about what they do.
> 
> Yup X 3, and the last is precisely why Friedl's book is valuable for
> people using "NFA" implementations:  Friedl does a good job of
> explaining when and why you're likely to trigger atrocious runtime
> performance, and gives practical general techniques for avoiding those
> problems.  None of that has anything to do with CompSci regexps
> either, but is vital knowledge for people hoping to make happy
> non-trivial use of Python/Perl/etc regexps.

I read the first edition, minus some engine-specific stuff.
General techniques are what I want, and I didn't see them in the
book. He had things to do and not do, but it didn't add up to
building (ir-)regular expressions with reliably tractable
behavior.


-- 
--Bryan


From sjmachin at lexicon.net  Fri Sep 22 18:30:44 2006
From: sjmachin at lexicon.net (John Machin)
Date: 22 Sep 2006 15:30:44 -0700
Subject: python-Levenshtein-0.10.1
In-Reply-To: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
References: <1158961957.761163.134970@d34g2000cwd.googlegroups.com>
Message-ID: <1158964244.803159.203820@i42g2000cwa.googlegroups.com>


joshbloom at gmail.com wrote:
> Hi Guys,
>
> I've been using this c implementation
> http://trific.ath.cx/resources/python/levenshtein/ on a windows box and
> it works great.
>
> I'd like to move my app over to linux machine and am wondering if
> someone could help me understand how to 'install' this extension on a
> linux machine?
>

Standard procedure for installing from source distribution any
well-packaged package (including extensions)  on any platform:

1. make a directory for the purpose
2. unpack the downloaded archive into the directory
3. cd to the directory
4. which should contain a file "setup.py"
5. at the shell/command/whatever prompt, do
    setup.py install
or whatever it takes to run the "setup.py" script with one argument,
"install"
6. stand well back :-)

-- all of which and much more can be found here:

http://docs.python.org/inst/inst.html

HTH,
John



From jmpurser at gmail.com  Thu Sep  7 12:34:32 2006
From: jmpurser at gmail.com (John Purser)
Date: Thu, 07 Sep 2006 09:34:32 -0700
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <1157645461.166427.263150@m73g2000cwd.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
	<1157642876.793030.134030@p79g2000cwp.googlegroups.com>
	<45003CCC.4050804@websafe.com>
	<1157644621.982238.11580@e3g2000cwe.googlegroups.com>
	<1157645461.166427.263150@m73g2000cwd.googlegroups.com>
Message-ID: <1157646872.5378.24.camel@localhost.localdomain>

Omar,

The '>>>' were causing the problem I would guess.  Those are the
interactive interpreter's prompts, not python.  Saving a python session
like that is a starting place for creating code, not the finished
product.

You might also want to save the file as "helloworld11.py" before double
clicking it.

Again, these problems indicate that you're not ready to even start
coding until you've read a good intro text.

John Purser

On Thu, 2006-09-07 at 09:11 -0700, Omar wrote:
> okay...
> 
> I got to work using the SCITE editor with
> 
> print "hello world" 		# here we are once again
> raw_input("press return") 
> 
> cool!
> 



From gagsl-py at yahoo.com.ar  Thu Sep 28 00:50:19 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 28 Sep 2006 01:50:19 -0300
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159374951.630923.268210@i3g2000cwc.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>
	<mailman.630.1159251019.10491.python-list@python.org>
	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>
	<1159374951.630923.268210@i3g2000cwc.googlegroups.com>
Message-ID: <7.0.1.0.0.20060928013611.05660e48@yahoo.com.ar>

At Wednesday 27/9/2006 13:35, p.lavarre at ieee.org wrote:

> > > http://starship.python.net/crew/theller/ctypes/tutorial.html
> > ...
> > direct discussion only of how to construct null pointers,
> > no discussion of how to test for them ...
> > ...
> > could be read to mean try ... == ... is ... False ... None ...
>
>CTypes nulls fetched from a struct feel more like None than do CTypes
>nulls fetched from elsewhere, astonishing me the Python newbie, e.g.:

No, the difference comes from the kind of pointer type, char* gets 
converted to string or None. See the table on section 14.14.1.4 
Fundamental data types

>$ python nulls.py
>True True True None None
>True True True None None
>True False False None c_char_p(None)
>$
>$ cat nulls.py
>from ctypes import *
>class struct_aa(Structure):
>     _fields_ = [("chars", c_char_p)]
>pv = None
>print not pv, pv == None, pv is None, cast(pv, c_void_p).value, pv
>pv = struct_aa().chars
>print not pv, pv == None, pv is None, cast(pv, c_void_p).value, pv
>pv = cast(c_void_p(0), c_char_p)
>print not pv, pv == None, pv is None, cast(pv, c_void_p).value, pv
>$

c_char_p is *not* a pointer in Python, since Python does not have pointers.
Either the original C pointer was NULL: then the Python value is None
Or the original C pointer was not NULL: then the Python value is a string


>Possibly relevant, though grabbed at random, is:
>
>/// PEP 8 -- Style Guide for Python Code
>/// http://www.python.org/dev/peps/pep-0008/
>
>... beware of writing "if x" when you really mean "if x is not None" --
>e.g. when testing whether a variable or argument that defaults to None
>was set to some other value.  The other value might have a type (such
>as a container) that could be false in a boolean context!

This is exactly the case: None is *not* a pointer (neither any other 
kind of ctypes object), it's an object -a singleton, i.e., there 
exist exactly a single one instance of None).
If you want to check if some kind of pointer is NULL or not, do *not* 
check if it is None or not, check its Boolean value, again:
if ptr: xxx
if not ptr: xxx



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From gagsl-py at yahoo.com.ar  Sat Sep 16 07:55:02 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 16 Sep 2006 08:55:02 -0300
Subject: strange result with json-server & zop
In-Reply-To: <8654bee00609160440o4088c4ffxec44043788314aaf@mail.gmail.co
 m>
References: <1158402531.889644.151000@m7g2000cwm.googlegroups.com>
	<7.0.1.0.0.20060916074836.040617f8@yahoo.com.ar>
	<8654bee00609160440o4088c4ffxec44043788314aaf@mail.gmail.com>
Message-ID: <7.0.1.0.0.20060916085016.03c0db90@yahoo.com.ar>

At Saturday 16/9/2006 08:40, asterocean wrote:

>>But this is not UTF-8; looks like UTF-16 with 0x00 converted to 0x20
>>(space). I'd look at where the body comes from, or ask on the Zope
>>list for the right way to use dtml-mime.
>
>i've try with UTF-8 , error remains . when the script is called
>directly from http request , it went well. so this should not be the
>problem. the real problem is when it is called from a json-rpc, the
>error happened

Try to look at what you *get* as the body from xmlrpc, if it comes 
wrong, will go wrong to the email.

>>Anyway, why are you using dtml-mime and such? Using the email package
>>is easier and a lot more powerful.
>i'm using zope & jsonserver & maildrop to develop this part , so the
>main problem how to send mail with json-rpc structure.

You can use the email package from inside Zope; an external method will do.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From harbingerofpeace at post.com  Sun Sep 24 01:05:33 2006
From: harbingerofpeace at post.com (Pete)
Date: 23 Sep 2006 22:05:33 -0700
Subject: HTTP GET Explodes...
In-Reply-To: <15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
References: <1159058769.130834.9850@i3g2000cwc.googlegroups.com>
	<1159060573.521054.243850@m7g2000cwm.googlegroups.com>
	<1159061888.165073.105510@h48g2000cwc.googlegroups.com>
	<1159063894.894541.3180@b28g2000cwb.googlegroups.com>
	<1159064765.214210.300630@k70g2000cwa.googlegroups.com>
	<15nRg.11587$v%4.9019@newsread1.news.pas.earthlink.net>
Message-ID: <1159074333.012897.178660@h48g2000cwc.googlegroups.com>

> > Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
> > [GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
> > Type "help", "copyright", "credits" or "license" for more information.
> > >>> import httplib
> > >>> conn = httplib.HTTPConnection("www.python.org")
> > >>> conn.request("GET", "/index.html")
> > Hello World.
>
>       Off-hand -- I'd suggest you do a search of your computer for any
> occurrence of
>       httplib.py
>       httplib.pyc
>       httplib.pyo
> on the odd chance that you are picking up some corrupted version...

Problem solved (sort of...). I searched for "httplib*". I had some
cygwin stuff archived on my Linux box, but the cygwin stuff wasn't in
my search path, but on an odd chance I renamed the cygwin httplib*
files to something else. Problem persisted. On another odd chance I
fired up "python" as root, plugged in the example at
http://www.python.org/doc/current/lib/httplib-examples.html, and things
were clicking... There was a problem with "r2", but that was
understandable...

In my confused state I created a new user, fired up python, slung the
example code, and had no problem (except for "r2", but that was
understandable).

So, I looked at my search path under the account that was experiencing
the problem. That wasn't it... Then I'm thinking there's an
environmental variable causing this. Too many to work right now. Will
investigate later.

So, the problem lies somewhere in the account running Python... Not
sure how/why...

Thanks to all!,
Pete

>
> -=-=-=-=-=-=-=-
> PythonWin 2.4.3 (#69, Apr 11 2006, 15:32:42) [MSC v.1310 32 bit (Intel)]
> on win32.
> Portions Copyright 1994-2004 Mark Hammond (mhammond at skippinet.com.au) -
> see 'Help/About PythonWin' for further copyright information.
> >>> import httplib
> >>> conn = httplib.HTTPConnection("www.python.org")
> >>> conn.request("GET", "/index.html")
> >>> resp = conn.getresponse()
> >>> print resp.getheaders()
> [('content-length', '12196'), ('accept-ranges', 'bytes'), ('server',
> 'Apache/2.0.54 (Debian GNU/Linux) DAV/2 SVN/1.1.4 mod_python/3.1.3
> Python/2.3.5 mod_ssl/2.0.54 OpenSSL/0.9.7e'), ('last-modified', 'Sat, 23
> Sep 2006 23:49:01 GMT'), ('etag', '"61b82-2fa4-99e01540"'), ('date',
> 'Sun, 24 Sep 2006 03:26:30 GMT'), ('content-type', 'text/html')]
> >>> print resp.read()
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
> <head>
> <meta content="text/html; charset=utf-8" http-equiv="content-type" />
> --
>       Wulfraed        Dennis Lee Bieber               KD6MOG
>       wlfraed at ix.netcom.com           wulfraed at bestiaria.com
>               HTTP://wlfraed.home.netcom.com/
>       (Bestiaria Support Staff:               web-asst at bestiaria.com)
>               HTTP://www.bestiaria.com/



From ldo at geek-central.gen.new_zealand  Tue Sep 26 04:50:42 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 20:50:42 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8d06$fui$5@lust.ihug.co.nz>
	<Xns98498D79318AFduncanbooth@127.0.0.1>
Message-ID: <efapj7$rfd$2@lust.ihug.co.nz>

In message <Xns98498D79318AFduncanbooth at 127.0.0.1>, Duncan Booth wrote:

> The spurious escaping of the apostrophe does no harm, but spuriously
> escaping a newline makes the select match the letter 'n' insteal of
> matching a newline.

And how would you get my QuoteSQL routine, as written, to make the same
mistake you did?


From richardjones at optushome.com.au  Fri Sep 15 22:33:23 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Sat, 16 Sep 2006 12:33:23 +1000
Subject: mp3 libs and programs
References: <1158369401.262011.256700@b28g2000cwb.googlegroups.com>
Message-ID: <450b6273$0$5110$afc38c87@news.optusnet.com.au>

Jay wrote:
> I'm writing a python script that involves playing mp3 files.

I've previously successfully used the Python interface for MAD:

   http://www.underbit.com/products/mad/

which was trivial to use in combination with libao's python interface (and
throw in ogg.vorbis from xiph.org and you've got a complete player :)

Also, these days you might want to look into gstreamer. It rocks*, but I've
not personally used it.:

  http://gstreamer.freedesktop.org/


    Richard

*: Anthony Baxter, your friendly neighborhood Python Release Manager, is in
love with it.



From deets at nospam.web.de  Wed Sep 20 06:19:54 2006
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Wed, 20 Sep 2006 12:19:54 +0200
Subject: byte count unicode string
References: <mailman.317.1158745230.10491.python-list@python.org>
Message-ID: <4nciuaF9p52dU1@uni-berlin.de>

willie wrote:

> John Machin:
> 
>  >You are confusing the hell out of yourself. You say that your web app
>  >deals only with UTF-8 strings. Where do you get "the unicode string"
>  >from??? If name is a utf-8 string, as your comment says, then len(name)
>  >is all you need!!!
> 
> 
> # I'll go ahead and concede defeat since you appear to be on the
> # verge of a heart attack :)
> # I can see that I lack clarity so I don't blame you.

Could you please change your style of quoting/posting? It is extremely
confusing - not only using a different character than > for citations, but
also appearing to cite yourself while in fact it is your answer one reads.

I'm all for expressing oneself and proving to be an individual - but
communication can get tricky even with standardized manners of doing so,
and there is no need to add more confusion.

> # By UTF-8 string, I mean a unicode object with UTF-8 encoding:
> 
> type(ustr)
> <type 'unicode'>
>  >>> repr(ustr)
> "u'\\u2708'"

You ARE confusing the hell out of yourself. There is no such thing as a
unciode object with UTF-8 encoding. There are unicode objects. And there
are byte-strings, which may happen to represent text encoded in utf-8.

What you see above is a unicode code point literal - which is translated to
a certain utf-8 string, that looks suspiciously alike because of the way
utf-8 defines the mapping between the code-points of unicode to utf-8.

But it still remains true: a unicode object is a unicode object. And has no
encoding whatsoever!

> # The database API expects unicode objects:
> # A template query, then a variable number of values.
> # Perhaps I'm a victim of arbitrary design decisions :)

The same happens in java all the time, as java only deals with unicode
strings. And for dealing with it, you also need to explicitly convert them
to the proper encoded byte array. Unfortunate, but true.

Diez


From lm401 at cam.ac.uk  Thu Sep 21 07:19:45 2006
From: lm401 at cam.ac.uk (LorcanM)
Date: 21 Sep 2006 04:19:45 -0700
Subject: Can I inherit member variables?
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<mailman.399.1158835004.10491.python-list@python.org>
Message-ID: <1158837585.252993.116590@e3g2000cwe.googlegroups.com>

Thanks a lot folks for all the help. Its a lot clearer now.

If I could summarise my original misunderstanding about inheritance:

I belived that a sub class inherited a *specific instance* of the super
class.

This is clearly not right - the misunderstanding arose as I was
instantiating the super class from within the base class. As people
have pointed out it seems strange to instantiate an 'animal' and then
only later decide that it is a 'fish' or a 'bird'. Obviously my code is
an analogy to the problem I'm tackling. What I'm doing is a bit more
abstract: I'm instantiating a 'world' (as a super class) and then
various 'worldviews' as sub-classes. The 'worldviews' must know about
various aspects of the 'world' from which they are instantiated to be
able to do what they need to do (as the 'bird' needs to know about
'weight' and 'colour' to be able to describe itself).

Passing these aspects forward to the constructor of the sub class is
the solution I've implemented and it works and looks sensible.

Thanks again to all,


 Lorcan.



From paul at boddie.org.uk  Fri Sep  8 12:31:52 2006
From: paul at boddie.org.uk (Paul Boddie)
Date: 8 Sep 2006 09:31:52 -0700
Subject: Javadoc style python manual?
References: <1157703066.770505.189110@d34g2000cwd.googlegroups.com>
	<1157705755.474006.84410@i3g2000cwc.googlegroups.com>
Message-ID: <1157733112.626057.74610@e3g2000cwe.googlegroups.com>

Ben Sizer wrote:
> xiong.xu.cn at gmail.com wrote:
> > I'm new to python and I'm from the java world.
> > Though I love to learn python, I'm not very comfortable with the python
> > documentation.
> > Because when i read jdk doc, i can see the class hierachy, class
> > member, class methods etc in html docs. It's very easy for me to
> > understand the Java language.

I was going to recommend running something like epydoc [1] over the
standard library, but this has its pitfalls.

> > But in python, i find it kind of inconvient.
>
> My advice is to get used to it... the Python docs are not arranged in
> the hierarchical fashion because there isn't any real hierarchy to
> speak of. Python does not rely heavily on inheritance like Java does.
> Instead, it is used in just a few places, more like the C++ standard
> library than the Java library.

Generating API documentation using epydoc really shows this aspect of
the Python standard library: a huge list of names (sched, sets,
sgmllib, shelve, shlex, shutil, site, stmpd, smtplib, sndheader,
socket, sre, ...) which have little inherent organisation on their own.

> I agree that the Python docs aren't quite as effective as reference
> material due to the lack of simple function and method lists though. I
> don't know if there's a solution to that anywhere.

Well, I used a very simple approach to get epydoc to format the
standard library documentation:

epydoc --parse-only --output=apidocs \
  `find Lib -name test -prune -o -name "*.py" -print`

Better usage of the find command could be made, and the resulting
process occupied over 0.5GB before producing 581MB of API documents on
disk. The resulting output reveals some major differences between some
modules and in the quality of the documentation; for example, lots of
empty docstrings cannot always be explained away by the --parse-only
mode employed by epydoc in this case.

Certainly, those with ideas of reorganising the standard library ought
to consider the perspective of the questioner, along with the
possibilities for generating documentation using the various tools
available, in order to find inspiration in such matters.

Paul

[1] http://epydoc.sf.net/



From anthra.norell at vtxmail.ch  Thu Sep 28 14:43:01 2006
From: anthra.norell at vtxmail.ch (Frederic Rentsch)
Date: Thu, 28 Sep 2006 20:43:01 +0200
Subject: Can string formatting be used to convert an integer to its binary
	form ?
In-Reply-To: <1159455615.546936.83170@m7g2000cwm.googlegroups.com>
References: <mailman.868.1159427578.10491.python-list@python.org>	<efg10i$olr$1@mlucom4.urz.uni-halle.de>	<mailman.870.1159434346.10491.python-list@python.org>	<efg8lj$qvq$1@mlucom4.urz.uni-halle.de>
	<1159455615.546936.83170@m7g2000cwm.googlegroups.com>
Message-ID: <451C17B5.2010902@vtxmail.ch>

bearophileHUGS at lycos.com wrote:
> Mirco Wahab:
>   
>> But where is the %b in Python?
>>     
>
> Python doesn't have that. You can convert the number to a hex, and then
> map the hex digitds to binary strings using a dictionary, like this:
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440528
>
> Bye,
> bearophile
>
>   
Good idea, but shorter with -> 
http://cheeseshop.python.org/pypi/SE/2.2%20beta

 >>> import SE
 >>> Int_To_Binary = SE.SE (SE.SE ('0=0000 1=0001 2=0010 3=0011 4=0100 
5=0101 6=0110 7=0111 8=1000 9=1001 A=1010 a=1010 B=1011 b=1011 C=1100 
c=1100 D=1101 d=1101 E=1110 e=1110 F=1111 f=1111')
 >>> Int_To_Binary ('%x' % 1234567890')
'01001001100101100000001011010010'

 >>> Int_To_Binary.save ('se_definition_files/int_to_binary.se')

 >>> SE.SE ('se_definition_files/int_to_binary.se') ('%X' % 987654321)
'00111010110111100110100010110001'


Frederic



From fredrik at pythonware.com  Fri Sep  1 06:03:49 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 1 Sep 2006 12:03:49 +0200
Subject: python loops
References: <NYOBGCEXSMTP21ETwCv0005d3ba@nyobgcexsmtp21.uswin.ad.vzwcorp.com>
	<20060831193353.02FD61E4002@bag.python.org>
Message-ID: <ed90i5$pfd$1@sea.gmane.org>

Michael.Coll-Barth at VerizonWireless.com wrote:

> I thought the xrange was preferred?  for x in xrange(length):

preferred by premature optimization freaks, perhaps.  in practice, if the
range is reasonably small and you're going to loop over all the integers,
it doesn't really matter.

(the range form creates a list and N integers up front; the xrange form
creates an iterator object up front and N integers while you're looping.
what's faster depends on what Python version you're using, and some-
times also on the phase of the moon)

in Python 3.0, xrange() will disappear, and range() will return an iterator
instead.

</F> 





From jjl at pobox.com  Fri Sep  8 14:16:23 2006
From: jjl at pobox.com (John J. Lee)
Date: 08 Sep 2006 19:16:23 +0100
Subject: should urlparse return user and pass in separate components?
References: <1157662588.273505.316230@h48g2000cwc.googlegroups.com>
Message-ID: <uu03i1ax4.fsf@pobox.com>

"metaperl" <metaperl at gmail.com> writes:

> The urlparse with Python 2.4.3 includes the user and pass in the site
> aspect of its parse:
> 
> >>> scheme, site, path, parms, query, fid = urlparse.urlparse("http://bill:james at docs.python.org/lib/module-urlparse.html")
> 
> >>> site
> 'bill:james at docs.python.org'
> 
> 
> I personally would prefer that it be broken down a bit further. What
> are existing opinions on this?

Module urlparse should be deprecated in Python 2.6, to be replaced
with a new module (or modules) that implements the relevant parts of
RFC 3986 and 3987 (read the python-dev archives for discussion and
several people's first cuts at implementation).

Splitting "userinfo" (the bit before the '@' in
user:password at host.com) should be a separate function.  Mostly because
RFC 3986 talks a lot about 5-tuples into which ANY URL can be split,
and that splitting process doesn't involve splitting out userinfo.  So
it makes sense to have one function do the splitting into RFC 3986
5-tuples, and another split out the userinfo.  Also, though, the
userinfo syntax is deprecated, because people use it for semantic
spoofing attacks: people don't understand (or don't notice) that

http://microsoft.com&rhubarb=custard&confound=confabulate at 192.168.0.1/more/stuff.htm

is not a microsoft.com URL.  Note that userinfo has always been
illegal in HTTP URLs, and is no longer supported by newer browsers.
So relegating it to a separate function is a good thing, IMO.


John



From metaperl.etc at gmail.com  Tue Sep 26 10:23:57 2006
From: metaperl.etc at gmail.com (metaperl.etc at gmail.com)
Date: 26 Sep 2006 07:23:57 -0700
Subject: Finding the file referred to in a Python traceback
Message-ID: <1159280636.760157.298320@e3g2000cwe.googlegroups.com>

In this traceback, the path to 3 different SQL Alchemy source files is
a relative directory. However, no such directory is below my current
working directory.

This is problematic for two reasons:
1 - I cannot use XEmacs find-file-at-point to find the file in which
the error is occurring
2 - I am not really sure where the source file is that is causing
problems because tha path could be relative to anything.

--- output ---

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "conf/__init__.py", line 34, in __init__
    self.table = tables(self.metadata)
  File "conf/__init__.py", line 38, in __init__
    self.users         = Table('Users', metadata, autoload=True)
  File "build/bdist.darwin-8.7.1-i386/egg/sqlalchemy/schema.py", line
138, in __call__
  File "build/bdist.darwin-8.7.1-i386/egg/sqlalchemy/engine/base.py",
line 495, in reflecttable
  File
"build/bdist.darwin-8.7.1-i386/egg/sqlalchemy/databases/mssql.py", line
426, in reflecttable
TypeError: __init__() takes at most 2 arguments (3 given)
>>> import sys
>>> print sys.path
['', '/sw/lib/python2.4/site-packages/Dabo-0.6.5s-py2.4.egg',
'/sw/lib/python2.4/site-packages/SQLAlchemy-0.2.8dev_r1898-py2.4.egg',
'/sw/lib/python24.zip', '/sw/lib/python2.4',
'/sw/lib/python2.4/plat-darwin', '/sw/lib/python2.4/plat-mac',
'/sw/lib/python2.4/plat-mac/lib-scriptpackages',
'/sw/lib/python2.4/lib-tk', '/sw/lib/python2.4/lib-dynload',
'/sw/lib/python2.4/site-packages',
'/sw/lib/python2.4/site-packages/Numeric',
'/sw/lib/python2.4/site-packages/PIL',
'/sw/lib/python2.4/site-packages/gtk-2.0',
'/sw/lib/python2.4/site-packages/pythonutils',
'/sw/lib/python2.4/site-packages/wx-2.6-gtk2-unicode']
>>>



From ilias at lazaridis.com  Tue Sep 26 14:31:37 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 26 Sep 2006 11:31:37 -0700
Subject: IDLE - Customizing output format
In-Reply-To: <mailman.616.1159244974.10491.python-list@python.org>
References: <ef3hu5$a20$1@mouse.otenet.gr>
	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>
	<mailman.542.1159129807.10491.python-list@python.org>
	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>
	<ef6ut6$61r$1@sea.gmane.org>
	<mailman.616.1159244974.10491.python-list@python.org>
Message-ID: <1159295496.138650.202860@k70g2000cwa.googlegroups.com>


Gabriel Genellina wrote:
> At Sunday 24/9/2006 18:55, Robert Kern wrote:
>
> >Anyways, against my better judgement, I will tell you that you can
> >customize the
> >output by replacing sys.displayhook with your own function:
> >
> >    http://www.python.org/doc/current/lib/module-sys.html
> >
> >  >>> import sys
> >  >>> def f(obj):
> >         print '    ' + repr(obj)
> >  >>> sys.displayhook = f
>
> Sometimes I enable a similar approach on my sitecustomize.py, using
> the pprint module. But I don't *always* like the output format.

Can you please show this approach using "pprint"?

.



From nick at craig-wood.com  Wed Sep 13 01:31:22 2006
From: nick at craig-wood.com (Nick Craig-Wood)
Date: Wed, 13 Sep 2006 00:31:22 -0500
Subject: best way of testing a program exists before using it?
References: <mailman.367.1158077902.5279.python-list@python.org>
Message-ID: <slrnege2q4.bp1.nick@irishsea.home.craig-wood.com>

Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
>  OK, I've never sent in a patch before (blushes for shame
>  as he thinks of all the years he's been using Python). Would
>  you mind pointing me towards some doc or post which tells
>  me where to look and what to do. Should I checkout svn and 
>  patch against that? Or what?

In brief :-

Checkout svn
Make your changes - remember the docs and tests as well as the code
Test your changes
run "svn diff" and save the output to a file
Attach this diff to an entry in the bug tracker
Optionally post a note to python-dev about what you've done

Thats what I've done in the past anyway!

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From keith.dart at gmail.com  Tue Sep  5 15:18:30 2006
From: keith.dart at gmail.com (kdart)
Date: 5 Sep 2006 12:18:30 -0700
Subject: Getting text into the copy-paste buffer...
In-Reply-To: <mailman.35.1157482463.5279.python-list@python.org>
References: <mailman.35.1157482463.5279.python-list@python.org>
Message-ID: <1157483910.308073.274710@h48g2000cwc.googlegroups.com>


David Hirschfield wrote:
> Strange request, but is there any way to get text into the linux
> copy-paste buffer from a python script ?
>
> I know the standard python libraries won't have that functionality
> (except as a side-effect, perhaps?), but is there a simple trick that
> would do it on linux? A command line to get text into the buffer? Using
> a gui toolkit as a proxy to get text in there?

There's a utility called xclip that you can wrap with popen2 or
something similar. I use my own proctools:

	import proctools
	XCLIP = proctools.which("xclip")
	es, arg = proctools.getstatusoutput("%s -o -selection primary" %
(XCLIP,))

"arg" has the X selection.



From isalazar80 at yahoo.com.mx  Mon Sep 18 20:51:29 2006
From: isalazar80 at yahoo.com.mx (citlaly)
Date: 18 Sep 2006 17:51:29 -0700
Subject: Read a group of files as a list
In-Reply-To: <1158625625.003467.275020@i42g2000cwa.googlegroups.com>
References: <1158624562.304217.36530@d34g2000cwd.googlegroups.com>
	<1158625625.003467.275020@i42g2000cwa.googlegroups.com>
Message-ID: <1158627089.708791.241390@m7g2000cwm.googlegroups.com>

Thanks a lot  Bearophile!! It works great! Well, it seems something
easy for experts, but for beginners as me, your help is very useful...
thanks!!
Citlalyy
>
> >>> import os
> >>> os.listdir("...path...")
> [.... file names... ]
>
> If you are using Windows I suggest you to invert the slashes of the
> path, so instead of:
> "C:\WINNT\Fonts"
> Use:
> "C:/WINNT/Fonts"
> 
> Bye,
> bearophile



From enigmadude at rock.com  Wed Sep  6 19:03:55 2006
From: enigmadude at rock.com (enigmadude)
Date: 6 Sep 2006 16:03:55 -0700
Subject: No ValueError for large exponents?
Message-ID: <1157583835.910817.140330@p79g2000cwp.googlegroups.com>

As many have heard, IronPython 1.0 was released. When I was looking
through the listed differences between CPython and IronPython, the
document mentioned that using large exponents such as 10 **
735293857239475 will cause CPython to hang, whereas IronPython will
raise a ValueError. Trying this on my own machine, it did indeed seem
to cause CPython to hang. In cases such as this, should this be
considered a bug in the CPython implementation that needs to be fixed?
Or is there a reason for this, such as consideration of future changes
and language definition vs language implementation, etc.?



From bob at passcal.nmt.edu  Sun Sep 10 16:26:57 2006
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Sun, 10 Sep 2006 14:26:57 -0600
Subject: Two ethernet cards/networks (still)
References: <M6CdnZKD9p1rwZ3YnZ2dnUVZ_sednZ2d@nmt.edu>
	<mailman.140.1157668455.5279.python-list@python.org>
Message-ID: <hPadnWV-Vf4I6ZnYnZ2dnUVZ_o6dnZ2d@nmt.edu>


"Steve Holden" <steve at holdenweb.com> wrote in message 
news:mailman.140.1157668455.5279.python-list at python.org...
> Bob Greschke wrote:
> The reason that "binding to a specific address is almost never used for a 
> client" is because it's the server destination address that the network 
> layer will use to determine which interface is used to communicate with a 
> specific server host.
>
> Suppose your network setup looks like this:
>
>
> +-------------------+------------------------+ Network A
>                     |
>                     |
>                     |
>                     | 192.168.12.34/24
>                     |
>            +--------+--------+
>            |                 |
>            |                 |
>            |     YOUR HOST   |
>            |                 |
>            |                 |
>            +--------+--------+
>                     |
>                     | 201.46.34.22/24
>                     |
>                     |
>                     |
> +-------------------+----------+-------------+ Network B
>                                |
>                                +
>                       +--------+--------+
>                       |      router     |
>                       |   to internet   |
>                       +-----------------+
>
> If your client program tries to communicate with, say, 192.168.12.18 then 
> by the IP network layer will automatically select network A as the medium, 
> since the destination is local to that network. If you then want to 
> communicate the results to 201.46.34.118 then network B will be used, 
> again because the destination is local to that network (its first 24 bits 
> are the same as the first 24 bits of the destination).
>
> In this case the router on network B will almost certainly be the default 
> route for the host, as it's the way to everywhere else.
>
> This isn't really Python-related, so I hope it answers your question!
>
> regards
>  Steve
> -- 
> Steve Holden       +44 150 684 7255  +1 800 494 3119
> Holden Web LLC/Ltd          http://www.holdenweb.com
> Skype: holdenweb       http://holdenweb.blogspot.com
> Recent Ramblings     http://del.icio.us/steve.holden
>

Nice explanation!  Thanks!  You mean I don't have to do anything special?? 
That sounds suspiciously easy. :)

To muddy the water a little the equipment I want to get info from (some 
seismic digitizing/recording equipment) comes back to us from the field with 
the IP addresses set to whatever that last user needed.  What we do now is 
put the unit(s) on the bench, connect them to the private network and use a 
broadcast address (like 255.255.255.255) and a specific port number to query 
and see who is connected.  Then we (a program) can get in (login, basically) 
and reset the all of the IPs to the same subnet to proceed with checkout, 
calibration, etc.  We have to disconnect from (or disable the card for) the 
outside network when we do this discovery or else the program discovers all 
of these instruments that we have running in the building (monitoring a 
seismic pier, in people's offices, etc.).  I'm guessing here we will still 
need to do this?  It's not a biggie, but finding a way to not have to do 
this was what started this whole thing.  Once the program knows which 
instruments it found on the private network it doesn't matter.  It will only 
work on those ones.

Thanks!

Bob




From Matthew.Warren at Digica.com  Fri Sep 29 10:14:24 2006
From: Matthew.Warren at Digica.com (Matthew Warren)
Date: Fri, 29 Sep 2006 15:14:24 +0100
Subject: Making sure script only runs once instance at a time.
In-Reply-To: <D4F9316ACC9D20489CC81D19B8A87D5B039FE577@UKEX01.Digica.local>
Message-ID: <D4F9316ACC9D20489CC81D19B8A87D5B039FE578@UKEX01.Digica.local>

Apologies for repost. not sure what happened.


This email is confidential and may be privileged. If you are not the intended recipient please notify the sender immediately and delete the email from your computer. 

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From cliff at develix.com  Tue Sep 12 14:50:30 2006
From: cliff at develix.com (Cliff Wells)
Date: Tue, 12 Sep 2006 11:50:30 -0700
Subject: best small database?
In-Reply-To: <0rdNg.6440$c22.5757@trnddc07>
References: <0rdNg.6440$c22.5757@trnddc07>
Message-ID: <1158087030.28885.2.camel@devilbox>

On Mon, 2006-09-11 at 13:23 +0000, David Isaac wrote:
> I have no experience with database applications.
> This database will likely hold only a few hundred items,
> including both textfiles and binary files.
> 
> I would like a pure Python solution to the extent reasonable.

Since no one's mentioned it:

http://schevo.org/trac/wiki

-- 



From fredrik at pythonware.com  Tue Sep 26 09:20:59 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 26 Sep 2006 15:20:59 +0200
Subject: A critique of cgi.escape
References: <ef37im$5hj$1@lust.ihug.co.nz><mailman.499.1159035571.10491.python-list@python.org><slrnehbra1.kpr.jon+usenet@snowy.squish.net><mailman.518.1159087749.10491.python-list@python.org><slrnehe9ub.rk8.jon+usenet@snowy.squish.net><mailman.563.1159190394.10491.python-list@python.org><slrnehfnch.6tm.jon+usenet@snowy.squish.net><mailman.569.1159192888.10491.python-list@python.org><slrnehfomg.6tm.jon+usenet@snowy.squish.net><ef8oqr$9pt$1@news.albasani.net><slrnehfqc5.6tm.jon+usenet@snowy.squish.net><mailman.579.1159199258.10491.python-list@python.org><slrnehfupe.6tm.jon+usenet@snowy.squish.net><mailman.581.1159200379.10491.python-list@python.org><slrnehg086.7sa.jon+usenet@snowy.squish.net><mailman.585.1159204290.10491.python-list@python.org><slrnehg3v0.7sa.jon+usenet@snowy.squish.net><mailman.636.1159253196.10491.python-list@python.org>
	<slrnehhtdv.loa.jon+usenet@snowy.squish.net>
Message-ID: <efb9fr$ais$1@sea.gmane.org>

Jon Ribbens wrote:

> It's a pity he's being rude when presented with well-informed comment
> then.

since when is the output of

    import random, sys
    messages = [
        "that's irrelevant",
        "then their code is broken already",
        "that's not good enough",
        "then their tests are broken already",
        "you're rude",
        ]
    for x in xrange(sys.maxint):
        print random.choice(messages)

well-informed?  heck, it doesn't even pass the turing test ;-)

</F> 





From kosh at aesaeion.com  Fri Sep 29 11:25:09 2006
From: kosh at aesaeion.com (William Heymann)
Date: Fri, 29 Sep 2006 09:25:09 -0600
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159540482.924744.164420@k70g2000cwa.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>
	<mailman.932.1159533269.10491.python-list@python.org>
	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>
Message-ID: <200609290925.09429.kosh@aesaeion.com>

On Friday 29 September 2006 08:34, Larry Hastings wrote:
> It would still blow up if you ran
>   s = ""
>   for i in range(10000000):
>     s = "a" + s


This is a pretty small change but I would suggest xrange instead of range. 
That way you don't allocate that large list just to throw all the items away. 

In this case xrange will probably be faster then range also.


From project5 at redrival.net  Sat Sep 16 04:19:47 2006
From: project5 at redrival.net (Andrei)
Date: Sat, 16 Sep 2006 10:19:47 +0200
Subject: Looking for a python IDE
In-Reply-To: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
References: <1158388287.441157.92990@b28g2000cwb.googlegroups.com>
Message-ID: <eegc2s$3i6$1@sea.gmane.org>

> I am looking for a good IDE for Python. Commercial or Open Software.
> If possible with visual GUI designer.
 > For the moment I am considering Komodo.

There is no Python IDE that has a fully-integraded approach like Delphi 
or VS with all bells and whistles. Tools tend to be somewhat separate 
and can be combined at will, using any editor you like with any GUI 
designer you like. Boa constructor is an attempt at buildings something 
like Delphi, but it's quirky and has an unclear maintenance status.

Some of the big names in Python IDEs are Spe, Eric, Idle, PythonWin and 
WingIDE. GUI designers you can use are wxGlade (for wxPython), Glade 
(for PyGTK) and QtDesigner (for Qt). Spe + wxGlade and Eric + QtDesigner 
are natural fits.

It's really a jungle out there - your personal taste and toolkit 
preferences will have to determine your choice. If I like wxGlade, it 
won't help you if you want to build Qt apps, Eric doesn't work if you 
run Windows, etc.

Yours,

Andrei



From wildemar at freakmail.de  Wed Sep 20 21:23:15 2006
From: wildemar at freakmail.de (Wildemar Wildenburger)
Date: Thu, 21 Sep 2006 03:23:15 +0200
Subject: Upgrading question
In-Reply-To: <4511DA5D.6000602@mvista.com>
References: <1158797598.110269.57110@k70g2000cwa.googlegroups.com>
	<4511DA5D.6000602@mvista.com>
Message-ID: <4511E983.4080509@freakmail.de>

Carl J. Van Arsdall wrote:
> s99999999s2003 at yahoo.com wrote:
>> i am working in unix and my Python version is 2.4.1
>> I would like to upgrade my version to 2.5 stable. but i have many
>> scripts already running using 2.4.1. ...
> 
> other than that change the link in /usr/bin/python to point to 2.5 
> instead of 2.4

Do you think that's a good idea? What if the system's scripts depend on 
libs that aren't installed (or worse: not available) for 2.5?

I'd look into that first.

wildemar


From python.list at tim.thechases.com  Wed Sep 27 14:45:16 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Wed, 27 Sep 2006 13:45:16 -0500
Subject: sqlite3 error
In-Reply-To: <JnzSg.36$1n3.471@news.tufts.edu>
References: <JnzSg.36$1n3.471@news.tufts.edu>
Message-ID: <451AC6BC.9040404@tim.thechases.com>

> import sqlite3
> 
> con = sqlite3.connect('labdb')
> cur = con.cursor()
> cur.executescript('''
> DROP TABLE IF EXISTS Researchers;
> CREATE TABLE Researchers (
>      researcherID varchar(9) PRIMARY KEY NOT NULL,
>      birthYear int(4) DEFAULT NULL,
>      birthMonth int(2) DEFAULT NULL,
>      birthDay int(2) DEFAULT NULL,
>      birthCountry varchar(50) DEFAULT NULL,
>      birthState char(2) DEFAULT NULL,
>      birthCity varchar(50) DEFAULT NULL,
>      nameFirst varchar(50) NOT NULL,
>      nameLast varchar(50) NOT NULL,
>      nameGiven varchar(255) DEFAULT NULL,
> );
> ''')
> 
> And here's the error:
> 
> Traceback (most recent call last):
>    File "C:\Python25\myscripts\labdb\dbtest.py", line 19, in <module>
>      ''')
> OperationalError: near ")": syntax error
>  >>>
> 
> My script looks just like the example in the docs, so I'm not sure what 
> I'm doing wrong. The error message seems like it should be easy to 
> figure out, but all I did was close the triple quotes and then close the 
> parentheses, just like the example.
> 
> Hope someone can shed some light on this! :)

My guess would be the extra comma on the nameGiven line...most 
SQL engines I've used would choke on that

-      nameGiven varchar(255) DEFAULT NULL,
+      nameGiven varchar(255) DEFAULT NULL


-tkc





From sjmachin at lexicon.net  Sat Sep 30 22:28:26 2006
From: sjmachin at lexicon.net (John Machin)
Date: 30 Sep 2006 19:28:26 -0700
Subject: How to Catch 2 Exceptions at once?
In-Reply-To: <mailman.1021.1159666380.10491.python-list@python.org>
References: <mailman.1021.1159666380.10491.python-list@python.org>
Message-ID: <1159669706.569393.201220@m7g2000cwm.googlegroups.com>


Gregory Pi?ero wrote:
> How can I catch 2 exceptions at once for example:
>
>         try:
>             self.gses = opener.open(req)
>         except (urllib2.HTTPError,urllib2.URLError):
>             do something..
>
> Seems to work, but how do I also get information about the error?

Errr .. the same way as if you mentioned only one exception. The
following is an expansion of the scarcely-describable-as-bare coverage
in the tutorial
(http://docs.python.org/tut/node10.html#SECTION0010300000000000000000):

C:\junk>cat gregpexc.py
import sys
try:
    fname = raw_input('File name:')
    f = open(fname)
    i = 1 / 0
# except IOError, (errno, strerror):
#     print "I/O error(%s): %s" % (errno, strerror)
except (IOError, KeyboardInterrupt, ZeroDivisionError), e :
    print repr(e)
    print e
    print dir(e)
    print e.args
    print e.__class__.__name__
except:
    print "Unexpected error:", sys.exc_info()[0]
    # no example shown; read the fine manual :-)
    raise

C:\junk>python gregpexc.py
File name:<exceptions.KeyboardInterrupt instance at 0x00AF1EE0>

['__doc__', '__getitem__', '__init__', '__module__', '__str__', 'args']
()
KeyboardInterrupt

C:\junk>python gregpexc.py
File name:kl;lklklklk
<exceptions.IOError instance at 0x00AF1F08>
[Errno 2] No such file or directory: 'kl;lklklklk'
['__doc__', '__getitem__', '__init__', '__module__', '__str__', 'args',
'errno',
 'filename', 'strerror']
(2, 'No such file or directory')
IOError

C:\junk>python gregpexc.py
File name:gregpexc.py
<exceptions.ZeroDivisionError instance at 0x00AF1F08>
integer division or modulo by zero
['__doc__', '__getitem__', '__init__', '__module__', '__str__', 'args']
('integer division or modulo by zero',)
ZeroDivisionError

HTH,
John



From robert.kern at gmail.com  Tue Sep 19 15:04:59 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 19 Sep 2006 14:04:59 -0500
Subject: help with relative imports
In-Reply-To: <pMWPg.5$1n3.96@news.tufts.edu>
References: <bgWPg.3$1n3.37@news.tufts.edu>	<mailman.286.1158690229.10491.python-list@python.org>
	<pMWPg.5$1n3.96@news.tufts.edu>
Message-ID: <eepf0n$o0g$1@sea.gmane.org>

John Salerno wrote:
> Robert Kern wrote:
> 
>> What is ambiguous about A.B.D, A.E, and A.F.G? But if you like:
> 
> I guess maybe I was looking at it backwards. From the way it was worded, 
> I thought the only information we had to use was the structure A.B.C, 
> and then given a statement like:
> 
> from . import D
> 
> we just had to figure out for ourselves that this results in A.B.D, 
> instead of, for example, A.C.D, or any other possibility.
> 
> But I'm still a little confused about the use of the single or double 
> period. In this case:
> 
> from . import D                 # Imports A.B.D
> from .. import E                # Imports A.E
> 
> why do you need a single period in the first example, and a double in 
> the second, if they both are importing from A? If E is directly under A, 
> couldn't you just use a single period? And since D is nested twice 
> beneath A (i.e., in A, then in B), wouldn't you need two periods there 
> instead?

Remember that this is code in the A.B.C module. The first form looks for modules 
in the A.B package, that is, next to A.B.C . The second looks for modules in the 
A package, next to A.B .

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From larry.bates at websafe.com  Thu Sep  7 11:37:48 2006
From: larry.bates at websafe.com (Larry Bates)
Date: Thu, 07 Sep 2006 10:37:48 -0500
Subject: 4 Simple Questions About Python/IDLE
In-Reply-To: <1157642876.793030.134030@p79g2000cwp.googlegroups.com>
References: <1157637224.725618.164500@e3g2000cwe.googlegroups.com>
	<edp8tk$33j$1@newsreader2.netcologne.de>
	<1157639580.217361.273200@i42g2000cwa.googlegroups.com>
	<4500338B.1070408@websafe.com>
	<1157642876.793030.134030@p79g2000cwp.googlegroups.com>
Message-ID: <45003CCC.4050804@websafe.com>

Omar wrote:
> thank you genteman.
> 
> however, its not working :(
> 
> I resaved it, but same thing.
> 
Please post some code so we can actually do something more than
read your mind.  You can also run the program from a shell
instead of from idle to see what happens.

-Larry Bates


From franz.steinhaeusler at gmx.at  Thu Sep 14 04:25:50 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Thu, 14 Sep 2006 10:25:50 +0200
Subject: [ANN] XPN 0.6.5 released
References: <20060912201557.3812.4625.XPN@orion.homeinvalid>
Message-ID: <r54ig256qmt6e1h0sl5n93s5rqceosvg98@4ax.com>

On Tue, 12 Sep 2006 20:15:58 GMT, Nemesis <nemesis at nowhere.invalid>
wrote:

>XPN (X Python Newsreader) is a multi-platform newsreader with Unicode
>support. It is written with Python+GTK. It has features like
>scoring/actions, X-Face and Face decoding, muting of quoted text,
>newsrc import/export, find article and search in the body, spoiler
>char/rot13, random taglines and configurable attribution lines.

Hello Nemesis,

that is a great program, thank you.

I will try to use it and also attempt to 
customize it, so that it works like forte agent.

<ironic>Even better would it be to have it in wxPython</ironic>

Some little points:

There is no progress bar or other info, if I subscribe one list.
There is a little in the lower left corner, but if a lot of headers
and bodies are received, the program seems to hang.
I actually killed it, because I thought that hanging.

It would be nice, if I click on the groups pane another group, 
the messages appear immediatly, without needing to double click the
group.

When composing messages, the tab size is 8. It would be nice to 
have the possibility to adjust this size.

Cheers


From outstretchedarm at hotmail.com  Fri Sep  8 19:28:48 2006
From: outstretchedarm at hotmail.com (Omar)
Date: 8 Sep 2006 16:28:48 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
Message-ID: <1157758128.418227.301980@e3g2000cwe.googlegroups.com>

thanks for the suggestions, fellas



From Eric_Dexter at msn.com  Tue Sep 19 23:49:08 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 19 Sep 2006 20:49:08 -0700
Subject: newbe's re question
In-Reply-To: <1158718575.499145.58090@h48g2000cwc.googlegroups.com>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
	<1158718575.499145.58090@h48g2000cwc.googlegroups.com>
Message-ID: <1158724148.116887.178920@d34g2000cwd.googlegroups.com>


George Sakkis wrote:
> Eric_Dexter at msn.com wrote:
>
> > All I am after realy is to change this
> >
> >  reline = re.line.split('instr', '/d$')
>
> If you think this is the only problem in your code, think again; almost
> every other line has an error or an unpythonic idiom. Have you read any
> tutorial or sample code before typing this python-like pseudocode ?
>
> George

better to offend a python than a rattlesnake (you have to see the cwa
rattlesnake shirts shirts compared to the python shirts)  :)

As long as it will run but I feel like I am just converting it to
something that feels like c somewhat but I am learning the commands
(hopefully)..  hard to get a good chapters with questions at the end
without cash...  I am happy even if the code isn't pythonic if it runs
with this.

import csoundroutines

extractCsdInstrument("bay-at-night.csd", "test.orc", 1)

http://www.dexrow.com



From jjl at pobox.com  Wed Sep 27 15:45:25 2006
From: jjl at pobox.com (John J. Lee)
Date: 27 Sep 2006 20:45:25 +0100
Subject: How do I submit fixes for urllib2 & urlparse?
References: <1159185094.3276.20.camel@alfa>
Message-ID: <uirj914bu.fsf@pobox.com>

Neville CD <NevilleDNZ.python at 3ttechnology.com> writes:

> Basically I encountered some smallish problems with a couple of modules
> and figure I can fix the problems.  
> 
> I did find http://sourceforge.net/projects/python, should I report my
> problem report there and then assign them to myself to fix (and create
> test scripts). 
> 
> As you can probably guess I have not provided python fixes before.

Thanks for caring.

Please submit the bugs here:

http://sourceforge.net/tracker/?group_id=5470&atid=105470


Do a search there first, of course, to try and check whether somebody
else already reported it.

Do not assign the issue to anybody.  Pick the "Library Modules"
category and mention the name of the module(s) affected in the title
field.

If you have an actual patch, your bug is much more likely to be fixed,
and you should post it here instead:

http://sourceforge.net/tracker/?group_id=5470&atid=305470


More info:

http://www.python.org/dev/

http://www.python.org/dev/faq/#where-can-i-submit-view-bugs-for-python


> How complicated is this? eg I am using python 2.4 and 2.5b3.  Do I need
> to get up to speed with 2.6(?) and fix this also?  As a newbie which
> python mailing list should I subscribe to.

You don't have to subscribe to any list, but there are python-checkins
and bugs / patches mailing lists you can subscribe to if you want
(probably a good idea at the moment, since the SF tracker is not very
good and IIRC stopped sending the tracker update notifications that it
used to provide).  There's also python-dev, but most of that won't be
relevant.

It's certainly useful to check the bug against the most recent release
of Python, or better, against SVN HEAD.  But it's not strictly
necessary.

Much more important, though, is to provide a way of reproducing the
problem (preferably a small, standalone, executable piece of code!),
and a clear description of what you think is wrong.


> Please point me to the right URL to answer the above queries.
> 
> FYI: the problems I encountered are for:
> 1. Set-cookies in 302 urllib2.httpRedirects.
> 2. Location: header %20 format problem
> 3. urlparse.start_tag attribute parsing and HTML syntax error recovery.

I try to review all urllib2, and certainly all cookielib, bug reports,
but I'm not currently organised about it.  Anybody who submits one,
please do email me to point me at it.  (occasionally I remember to
search for them, but much better just to email me).  Ditto if there's
something related to that code that is languishing -- I might fix it
if reminded.

The scarce resource is people to review and comment on patches and
bugs.  Other than emailing me about bugs affecting those particular
modules, the best way to get patches reviewed is to review, and
comment on, five other patches and then email python-dev stating that
you have done so, and which bugs you reviewed.  Several people have
offered to review your patch if you do that.  It's also a good way to
find out just how much more competent than the rest of us people like
Martin von Loewis are :-)

BTW, note that an RFC 3986/3987-compliant replacement for urlparse is
in the works (in theory, anyway), and should be part of Python 2.6.
Bugs in urlparse should still be fixed, but urlparse is not intended
to be fully compliant with those RFCs.


John



From exarkun at divmod.com  Thu Sep 14 08:38:37 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Thu, 14 Sep 2006 08:38:37 -0400
Subject: Why not event-driven packages in other than the main thread?
In-Reply-To: <eeb6go$kfk$1@news.uit.no>
Message-ID: <20060914123837.1717.1509315376.divmod.quotient.48859@ohm>

On Thu, 14 Sep 2006 11:13:59 +0200, Tor Erik <torerik81 at gmail.com> wrote:
>Hi,
>
>I've developed an application were I've used Tkinter for the GUI.
>When I ran the GUI in another thread than the main, it kept locking
>up.
>I experienced similar problems with Twisted.
>
>Both of these tools are event-based, so I guess that is the root of the
>problem...
>
>But could anyone tell me why running these in a thread other than the
>main one doesn't work?

I don't know about Tkinter, but Twisted can be run in a thread other than
the main thread.  Several projects make use of this feature extensively, so
while I wouldn't recommend it, it should certainly work.

Perhaps you did something wrong in setting it up, or perhaps you have found
a bug.  Can you post a minimal example to reproduce this to Twisted's bug
tracker?

Jean-Paul


From istvan.albert at gmail.com  Sun Sep  3 18:54:21 2006
From: istvan.albert at gmail.com (Istvan Albert)
Date: 3 Sep 2006 15:54:21 -0700
Subject: sqlite 'ownership' problems
References: <1157319531.590763.37310@m79g2000cwm.googlegroups.com>
Message-ID: <1157324061.628391.271810@m73g2000cwd.googlegroups.com>

rdrink wrote:

> created at the cmnd-line, e.g. 'test.db' with a table 'foo', I would
> get the error "_sqlite.DatabaseError: no such table: foo". My suspition
> was that this is a "feature" of sqlite ('flat file' vs. a dynamic db in
> MySQL) where sqlite is 'sensetive' to who creates it...

Most likely you do not operate on the same database file.  Connecting
to a sqlite database will create the underlying database file if it
does not exist at the path you've specified. 

i.



From hg at nospam.com  Mon Sep 25 16:23:49 2006
From: hg at nospam.com (hg)
Date: Mon, 25 Sep 2006 15:23:49 -0500
Subject: ruby %w equivalent
In-Reply-To: <WVWRg.4782$Go3.723@dukeread05>
References: <mailman.545.1159136157.10491.python-list@python.org>
	<91WRg.4780$Go3.2318@dukeread05>
	<1159214388.394027.119040@k70g2000cwa.googlegroups.com>
	<WVWRg.4782$Go3.723@dukeread05>
Message-ID: <f0XRg.4783$Go3.4404@dukeread05>

hg wrote:
> MonkeeSage wrote:
>> hg wrote:
>>> Why would they want to make such an obscure API ? ... didn't they have
>>> Python to learn from (I am truly amazed - nothing cynical ...just ...
>>> why ?!!!!)
>> In ruby there are several special literal notations, just like python.
>> In ruby it goes like this:
>>
>> %{blah} / %Q{blah} # same as "blah" but igornes " and '
>> %q{blah} # same as 'blah' but no interpolation
>> %w{blah blah} # same as "blah blah".split
>> %r{blah} # same as /blah/
>> %x{ls} # same as `ls`
>>
>> Sometimes they are very useful, and sometimes they are cumbersome. It's
>> up to the programmer to implement them effectively.
>>
>> Regards,
>> Jordan
>>
> I am certain Ruby is a very effective language (I read much good stuff
> about it) ... it's just that I cannot comprehend why a "new" language
> would attempt so hard to look like assembly.
> 
> 
> Regards,
> 
> hg
> 
To further comment: back to the PDP11 and such guys, there was a true
need to "terse" the language and give the computer a break ... "what
I've already calculated, the computer needs not to calculate ... plus
I'm avoiding potential software(assembler/compiler) bugs"

But today ? what is the cost of replacing %w("blah blah") by
Hi_I_Want_To_Split_The_String_That_Follows( "blah blah")


From onurb at xiludom.gro  Fri Sep  8 04:36:51 2006
From: onurb at xiludom.gro (Bruno Desthuilliers)
Date: Fri, 08 Sep 2006 10:36:51 +0200
Subject: Best Middle Tier Architechure?
In-Reply-To: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
References: <m84Mg.75899$5i3.66377@bgtnsc04-news.ops.worldnet.att.net>
Message-ID: <45012ba4$0$1374$636a55ce@news.free.fr>

Butternut Squash wrote:
> What do you guys recommend for doing middle tier in python.
> I want to hide the database from the application 

Why ?


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From wuwei23 at gmail.com  Sun Sep 17 00:21:19 2006
From: wuwei23 at gmail.com (alex23)
Date: 16 Sep 2006 21:21:19 -0700
Subject: RegexBuddy (anyone use this?)
In-Reply-To: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
References: <1158416862.260315.59050@i42g2000cwa.googlegroups.com>
Message-ID: <1158466879.800592.20130@d34g2000cwd.googlegroups.com>

Eric_Dexter at msn.com wrote:
> Has anyone tried this thing..
> http://www.regular-expressions.info/regexbuddy.html

For another free option, there's Kiki:

http://project5.freezope.org/kiki/

It has the advantage of being based on the actual python re module. It
also comes with SPE.

-alex23



From uche.ogbuji at gmail.com  Fri Sep 29 09:29:17 2006
From: uche.ogbuji at gmail.com (uche.ogbuji at gmail.com)
Date: 29 Sep 2006 06:29:17 -0700
Subject: XSLT speed comparisons
In-Reply-To: <1159395309.166081.23130@m7g2000cwm.googlegroups.com>
References: <1159392275.988709.72990@m7g2000cwm.googlegroups.com>
	<1159395309.166081.23130@m7g2000cwm.googlegroups.com>
Message-ID: <1159536557.371565.94850@m73g2000cwd.googlegroups.com>

Ross Ridge wrote:
> Damian wrote:
> It could just be that 4suite is slower than MSXML.  If so, you can use
> MSXML in Python if you want.  You'll need to install the Python for
> Windows extensions.  Something like this:
>
> 	from os import environ
> 	import win32com.client
>
> 	def buildPage():

[SNIP]

Added to:

http://uche.ogbuji.net/tech/akara/nodes/2003-01-01/python-xslt

--
Uche Ogbuji                               Fourthought, Inc.
http://uche.ogbuji.net                    http://fourthought.com
http://copia.ogbuji.net                   http://4Suite.org
Articles: http://uche.ogbuji.net/tech/publications/



From ilias at lazaridis.com  Tue Sep 19 10:14:37 2006
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: 19 Sep 2006 07:14:37 -0700
Subject: CONSTRUCT - Adding Functionality to the Overall System
In-Reply-To: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
References: <1158510136.181915.272700@d34g2000cwd.googlegroups.com>
Message-ID: <1158675276.965270.174860@m7g2000cwm.googlegroups.com>

Ilias Lazaridis wrote:
> I understand that I can use __metaclass__ to create a class which
> modifies the behaviour of another class.
>
> How can I add this metaclass to *all* classes in the system?
>
> (In ruby I would alter the "Class" class)

I got confused from the discussion about __metaclass__.

possibly a little more practical.

I like to add a method "writeDebug(self, msg)" to all (or the most
possible) classes in the system.

How do I do this?

* with new style classes
* with old style classes
 
> .
> 
> http://lazaridis.com



From ask at me  Mon Sep  4 15:58:50 2006
From: ask at me (alf)
Date: Mon, 04 Sep 2006 15:58:50 -0400
Subject: inaccuracy in the time module
Message-ID: <AvmdndRyXfGBDGHZnZ2dnUVZ_oOdnZ2d@comcast.com>

Hi,

can someone explane this:

 >>> from time import *
 >>> timezone
18000


 >>> t=time()
 >>> mktime(gmtime(t))-t
17999.680048942566


why there is a difference?

-- 
alf


From tony.bedford at gmail.com  Tue Sep 26 05:07:51 2006
From: tony.bedford at gmail.com (codefire)
Date: 26 Sep 2006 02:07:51 -0700
Subject: I need some help with a regexp please
In-Reply-To: <5w2Sg.12714$v%4.12201@newsread1.news.pas.earthlink.net>
References: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>
	<1158874471.410073.71570@i3g2000cwc.googlegroups.com>
	<1158881568.914183.112660@i3g2000cwc.googlegroups.com>
	<1159205101.539477.109910@m7g2000cwm.googlegroups.com>
	<5w2Sg.12714$v%4.12201@newsread1.news.pas.earthlink.net>
Message-ID: <1159261671.106976.147230@e3g2000cwe.googlegroups.com>


> I still don't touch regular expressions... They may be fast, but to
> me they are just as much line noise as PERL... I can usually code a
> partial "parser" faster than try to figure out an RE.

Yes, it seems to me that REs are a bit "hit and miss" - the only way to
tell if you've got a RE "right" is by testing exhaustively - but you
can never be sure.... They are fine for simple pattern matching though.



From tjreedy at udel.edu  Tue Sep 26 16:27:04 2006
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 26 Sep 2006 16:27:04 -0400
Subject: Surprise using the 'is' operator
References: <78b3a9580609261239v6a7e289q126e90da401c2752@mail.gmail.com>
Message-ID: <efc2en$fa0$1@sea.gmane.org>


"wesley chun" <wescpy at gmail.com> wrote in message 
news:78b3a9580609261239v6a7e289q126e90da401c2752 at mail.gmail.com...
> as a side note, the ints that are cached (for current versions of
> Python) are in range(-1, 100)... is this documented somewhere?

Not true for at least 2.4 and 2.5.  The cached range has expanded

> i know it's subject to change.

Yes ;-)

tjr





From exarkun at divmod.com  Mon Sep  4 12:53:09 2006
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Mon, 4 Sep 2006 12:53:09 -0400
Subject: Prevent self being passed to a function stored as a member
	variable?
In-Reply-To: <1157387972.227609.326880@e3g2000cwe.googlegroups.com>
Message-ID: <20060904165309.1717.514065958.divmod.quotient.39006@ohm>

On 4 Sep 2006 09:39:32 -0700, Sandra-24 <sandravandale at yahoo.com> wrote:
>How can you prevent self from being passed to a function stored as a
>member variable?

This doesn't happen:

>>> class x:
...     def __init__(self):
...             self.x = lambda: None
... 
>>> x().x()
>>> class y(object):
...     def __init__(self):
...             self.y = lambda: None
... 
>>> y().y()
>>> 

Perhaps you confused this case with the case of a function which is a
class attribute?

>>> z().z()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: <lambda>() takes no arguments (1 given)
>>> 

In which case, staticmethod() is actually the solution you want:

>>> class w(object):
...     w = staticmethod(lambda: None)
... 
>>> w().w()
>>> 

Jean-Paul


From claudio.grondi at freenet.de  Fri Sep  1 19:16:49 2006
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Sat, 02 Sep 2006 01:16:49 +0200
Subject: OO on python real life tutorial?
In-Reply-To: <1157131966.489586.210710@e3g2000cwe.googlegroups.com>
References: <1157115615.141662.11680@h48g2000cwc.googlegroups.com>
	<ed9pm5$hmj$1@newsreader2.netcologne.de>
	<1157131966.489586.210710@e3g2000cwe.googlegroups.com>
Message-ID: <edaf0s$oc3$1@newsreader2.netcologne.de>

filippo wrote:
> thanks Fredrik and Claudio,
> 
> probably structured coding paradigm is what I need. Claudio, could you
> explain better your sentence below?
> 
> Claudio Grondi ha scritto:
> 
>>Python/Tk for it in order to avoid programming in wxPython if not really
>>necessary (wxPython has its strengths with growing project sizes, but
>>yours is still far below the threshold).
I personally don't like wxPython because the way it works is very 
counter intuitive for me and appear to me somehow non-Pythonic (I warned 
you, I am a bit biased to have something against OO, especially I mean, 
that the concept of inheritance produces more confusion than it helps). 
You are not in a big project with many programmer who must work together 
- in my eyes the only context in which OO starts to make sense. You also 
don't need something what Tk does not come with to be forced to switch 
to wxPython (e.g. in order to use Scintilla). wxPython is like 
programming in Microsoft Visual Basic or Visual C++ : some love it, some 
don't. Nothing comes at no cost, so when from the one side you don't 
need to care about some portions of code on the other side you loose 
insight into them and in case of bad luck you will spend days/weeks on 
resolving things and bother much other experts to help you, where in 
case of not going into it you were able to resolve your problems yourself.

> I want to switch to wxpython because I don't like Tk too much. It is
> difficult sometimes to have full control of the widgets (i.e. focus
> sequence). Why do you think wxwidget is not suitable for low-medium
> size projects? Could you give me some practical examples of this?
I haven't said, that it is not suitable. Maybe you consider it from this 
point of view:
   The best programming environment is this one you know best.
You don't like Tk because you have learned about it quirks. So you hope 
to escape this using another set of tools coming with a bunch of another 
  quirks you probably don't know about. If you want to go into the 
effort to learn about them anyway, why not? Maybe you have the luck and 
don't spend hours/days/weeks on debugging things buried deep in the OO 
inheritance stuff and hidden this way from your direct insight? Good luck!

Claudio Grondi


From robert.kern at gmail.com  Tue Sep 26 14:47:08 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Tue, 26 Sep 2006 13:47:08 -0500
Subject: IDLE - Customizing output format
In-Reply-To: <1159295354.259058.52990@i42g2000cwa.googlegroups.com>
References: <ef3hu5$a20$1@mouse.otenet.gr>	<1159126159.462170.70420@d34g2000cwd.googlegroups.com>	<mailman.542.1159129807.10491.python-list@python.org>	<1159130442.913233.276910@k70g2000cwa.googlegroups.com>	<mailman.544.1159134982.10491.python-list@python.org>
	<1159295354.259058.52990@i42g2000cwa.googlegroups.com>
Message-ID: <efbsj8$p3i$1@sea.gmane.org>

Ilias Lazaridis wrote:
> Robert Kern wrote:

>> Anyways, against my better judgement, I will tell you that you can customize the
>> output by replacing sys.displayhook with your own function:
>>
>>    http://www.python.org/doc/current/lib/module-sys.html
>>
>>  >>> import sys
>>  >>> 1
>> 1
>>  >>> def f(obj):
>> 	print '    ' + repr(obj)
>>
>>  >>> sys.displayhook = f
>>  >>> 1
>>      1
>>  >>>
> 
> I've placed this code within /Lib/sitecustomize.py, but have one
> strange result:
> 
>>>> from talker import *
>>>> t = Talker()
>>>> t.sayHello
>   : <bound method Talker.sayHello of <talker.Talker instance at
> 0x00DEA198>>
>>>> t.sayHello()
> Hello world
>   : None
> 
> 1st: "Hello world" comes still on the beginning.

Yes. Read the doc for sys.displayhook() and you will understand why.

> 2nd: I got this "None"

Yes. Read the doc for sys.displayhook() and you will understand why.

I did not give you an all-singing, all-dancing solution, just showed you that 
you *can* customize the output that you said you wanted customized.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From g.brandl-nospam at gmx.net  Sun Sep 10 18:30:50 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Mon, 11 Sep 2006 00:30:50 +0200
Subject: ANN: Pocoo (bulletin board software) 0.1 beta released
Message-ID: <ee23mt$hd8$2@news.albasani.net>

We're pleased to announce that

      Pocoo 0.1 (beta) was released today (Sept. 10, 2006).

Pocoo <http://www.pocoo.org/> is a bulletin board software (aka. message board)
written in Python, adhering to the WSGI standard. In the long term, it is meant
to compete with systems like phpBB.

It provides an advanced plugin system with a component architecture which
allows other developers to modify Pocoo to their liking without the need to
touch existing source code. Building upon SQLAlchemy, Pocoo is able to
use either MySQL, SQLite, Oracle or Postgres as the storage backend.

The 0.1 release is not meant to be feature complete. It's more like a preview
to show off what's already there. If you like the idea, *feel free to join us!*


Features
^^^^^^^^

Currently implemented:

      * Support for either flat or threaded post view
      * URLs are very readable, furthermore one URL works for both flat and
threaded view
      * Support for JSONRPC and XmlHTTPRequest to dynamically fetch data where
useful while having a fallback for non-JS users
      * Very powerful plugin system
      * Extensible authentication system
      * WSGI compliancy
      * Database support for MySQL, Sqlite, Postgres, Oracle
      * BBCode/rst/safehtml parsers for markup
      * Javascript editors for the markup
      * Avatar support
      * User profiles and settings

Planned features

... can be found in the Idea Pool at http://trac.pocoo.org/wiki/IdeaPool.


Download
^^^^^^^^

Download the release at <http://www.pocoo.org/download>.


Cheers,
Georg Brandl, on behalf of the Pocoo Team


From g.brandl-nospam at gmx.net  Sun Sep 24 06:47:46 2006
From: g.brandl-nospam at gmx.net (Georg Brandl)
Date: Sun, 24 Sep 2006 12:47:46 +0200
Subject: assignment hook
In-Reply-To: <1159055894.620401.181760@m7g2000cwm.googlegroups.com>
References: <1159055894.620401.181760@m7g2000cwm.googlegroups.com>
Message-ID: <ef5nok$vl1$1@news.albasani.net>

paul.lafollette at gmail.com wrote:
> Kind people,
> Is there any way one can, within Python, intercept the act of
> assignment.  For instance, suppose that I was obsessed with
> FORTRAN II, and decided that I wanted to print a warning,
> or raise an exception any time someone assigned an int to a
> variable whose name did not start with i,j,k,l,m, or n.

This is not possible. Assignments in the form

name = value

(also called "binding a name") are not overloadable. As Roy Smith already noted,
assignments in the form

name.attribute = value
name[item] = value

are overloadable via __setattr__ and __setitem__.

Georg


From metaperl at gmail.com  Mon Sep 25 08:49:54 2006
From: metaperl at gmail.com (metaperl)
Date: 25 Sep 2006 05:49:54 -0700
Subject: One program in different GUI Toolkits
In-Reply-To: <mailman.549.1159160457.10491.python-list@python.org>
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
	<1159011106.418155.118660@m73g2000cwd.googlegroups.com>
	<1159126636.402693.231540@k70g2000cwa.googlegroups.com>
	<mailman.549.1159160457.10491.python-list@python.org>
Message-ID: <1159188594.559110.188420@b28g2000cwb.googlegroups.com>


Steve Holden wrote:
> metaperl.etc at gmail.com wrote:
> > Actually due to lack of documentation and feedback from the mailing
> > list, I am fallen out of love with Pythoncard and in love with
> > Kiwi/Pygtk. Given the large groundswell support for pygtk, i dont think
> > I will be disappointed.
>
> >
> In and out of love in eight hours and six minutes? I'm glad I don't have
> a daughter ;-)

heheh... I am rather mercurial (oops, no pun intended). I have never
held a job in the IT industry for a year in 7 years of professional
work: http://www.metaperl.com

But I just found out I get a 4-month penalty if I break my current
condo lease, so for once, I think I will stay put for a year.



From metaperl at gmail.com  Sat Sep  2 07:10:28 2006
From: metaperl at gmail.com (metaperl)
Date: 2 Sep 2006 04:10:28 -0700
Subject: inheritance needed in program configuration - config module or python
	oo?
Message-ID: <1157195428.593487.268960@74g2000cwt.googlegroups.com>



Inheritance needed in app configuration
=============================

I have an ftp server that a number of vendors connect into to upload a
file to their directory. In OO terms, we would have

class OurFTP:
  server = "ftpserver.com"

class Vendor1(OurFTP)
  user, pass, directory = ("blah","blah","blah")

etc, etc

And thus when I write a Python script to go check their uploads, I need
to create a VendorN object and use the user, pass and directory from
VendorN but use the server attribute from the parent class

Now in pure OO, this is a piece of cake. However, I thought I would use
ConfigObj to configure my app because it is clean and widely used and
the authors are active people. But I don't know how to get a local
config to inherit global values.

In other words, I have a file called global.ini with the server address
in it and then each vendor has a file called local.ini with their user,
pass, directory info.

And I need to form an FTP connection URL based on this. But I really
dont want to write my code such that I explicitly hardcode where the
ftpserver is coming from. Again, in pure OO it is very simple to call a
method and have it dispatch to either the current object or it's
parent, but I am not sure that ConfigObj or any config module allows
such power.

I am starting to think that I better just do my configuration
information in Python classes to get the genericity that I want.

Program Code
===========

Just in case you want to see what I'm doing, here's the relevant
section of code:

config  = ConfigObj("local.ini")
gconfig = ConfigObj("../generic.ini")


"""Curry function by Bruno Desthuilliers
http://groups.google.com/group/comp.lang.python/browse_thread/thread/b2af1cc34aab085e/c31e388ff0bb4e9c?lnk=gst&q=curry&rnum=10#c31e388ff0bb4e9c

curry() will be part of py2.5
"""

def curry(fun, *args):
   def _curried(*moreargs):
     return fun(*(args + moreargs))
   _curried.func_name = "curried(%s) of %r" % (", ".join(args), fun)
   return _curried

def getkey(k1,k2):
    return config[k1][k2]

#
--------------------------------------------------------------------------
# Fetch DMS file from KE FTP
#
--------------------------------------------------------------------------


ftp_cfg_keys = "filepattern user pass cwd".split()
ftp_lambda   = curry(getkey, 'ftp_in')
ftp_cmd_vals = map(ftp_lambda, ftp_cfg_keys)
print ftp_cmd_vals
# the !!! should be filled in with the globally configured FTP server
# but I refuse to play telepathic guru and point to the source directly
# if I have to write this over and use pure Python OO instead of a
# config module then so be it
ftp_cmd  = "mget %s | ftp -i ftp://%s:%s@!!!!/%s" % tuple(ftp_cmd_vals)
print ftp_cmd
os.system(ftp_cmd)
sys.exit()


Aside
====

When it comes to HTML generation, every form of mini-language that I've
seen does not appeal to me. I use DOM to rewrite HTML. I hate the
limitations of mini-languages and prefer full-strength programming
languages. Now it is appearing that application configuration is yet
one more place to avoid mini-language convenience and simply use a
programming language for the task.



From antoine at vo.lu  Sat Sep 30 05:24:56 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Sat, 30 Sep 2006 11:24:56 +0200
Subject: builtin regular expressions?
Message-ID: <451e37a5$1@news.vo.lu>

Hello,

Can anybody tell me the reason(s) why regular expressions are not built 
into Python like it is the case with Ruby and I believe Perl? Like for 
example in the following Ruby code

line = 'some string'

case line
   when /title=(.*)/
     puts "Title is #$1"
   when /track=(.*)/
     puts "Track is #$1"
   when /artist=(.*)/
     puts "Artist is #$1"
end

I'm sure there are good reasons, but I just don't see them.

Python Culture says: 'Explicit is better than implicit'. May it be 
related to this?

Regards,
antoine


From ldo at geek-central.gen.new_zealand  Mon Sep 25 06:53:05 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Mon, 25 Sep 2006 22:53:05 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<ef884j$82r$1@lust.ihug.co.nz>
	<Xns98496E6B5C337duncanbooth@127.0.0.1>
Message-ID: <ef8ccn$fui$1@lust.ihug.co.nz>

In message <Xns98496E6B5C337duncanbooth at 127.0.0.1>, Duncan Booth wrote:

> Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> 
>>> This could be an argument for having a utility function to escape the
>>> wildcards for this sort of situation, but certainly not an argument for
>>> his proposed QuoteSQL.
>> 
>> Why not? That is exactly one of the options my QuoteSQL offers.
>> 
> Yes, but your code also quotes non-wildcards...

It quotes specials which can cause trouble with MySQL. The specials come in
two sets (wildcards and others), but they are both specials.


From bolderaft at gmail.com  Sun Sep 17 15:21:29 2006
From: bolderaft at gmail.com (Brad Allen)
Date: 17 Sep 2006 12:21:29 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <1158519578.927195.195090@e3g2000cwe.googlegroups.com>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<1158519578.927195.195090@e3g2000cwe.googlegroups.com>
Message-ID: <1158520889.059212.85350@b28g2000cwb.googlegroups.com>


Kay Schluehr wrote:

> Personally, I never found the Python docs particular bad. It is
> rewarding to write good documentation because documentation has
> different aspects i.e. introductory/tutorial, exhaustive/manual and
> design documentation aspects. Not to mention cookbook recipes.
>
> I also observe that the discussion about Python docs is very tool
> centered and my question to all the people who believe to improve the
> Python docs by converting old tuturials into Wikis is that: what are
> the precise requirements? Will an internet connection soon be necessary
> to know how the sys module works?

+1 that downloadability is an important requirement; wiki does not
preclude this
-1 on wiki as the only approach; wiki could be an adjunct to officially
managed docs

> Are there any thoughts about
> integrating 3rd party module/package documentation with the docs of the
> stdlib / tutorial / language ref etc.so that they finally find their
> logical place in the system ?

This could become a natural progression once a full-featured
documentation system is in place.

> Are there any intentions to create an
> informational PEP regarding documentation in any forseeable future or
> shall documentation projects continue to start in the wild?

Sounds like a great idea. We should probably do more brainstorming and
discussion about the particulars before someone spends a lot of time
writing a PEP. We could create a separate topic in this forum, titled
something like 'Ideas for a new PEP on Python.org documentation
structure, UI, and processes'.



From mail at microcorp.co.za  Sat Sep  2 03:57:28 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 2 Sep 2006 09:57:28 +0200
Subject: Tkinter listbox and ftputil
References: <1157119078.055806.7750@h48g2000cwc.googlegroups.com>
Message-ID: <006301c6ce65$8f73fd80$03000080@hendrik>


 <vedran_dekovic at yahoo.com> wrote:


| Hi,
| Again I need help about tkinter listbox.
|
|
| example:
|
| In listbox must write (imaginary file in server):
|
| ['-rw-r--r--   1 vedran at vedran.byethost12.com vedran.byethost12.com
| 3506 Jun 25 14:40 file.gif']
|
|
| ....and then when somebody click on file in listbox,then in new Entry
| widget must
| write just filename        example:   'file.gif'  , not other file
| informations
|
|
|
|
|
|
|            THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

This thing looks like a list with one item in it, and the item looks like a
string ['.....']

So you can access the string as the first item in the list, and then you can use
split() on the string part, - this will give you list of words - the last word
in the list will be the one you want...

hth - Hendrik




From MonkeeSage at gmail.com  Fri Sep  8 21:00:15 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 8 Sep 2006 18:00:15 -0700
Subject: convert loop to list comprehension
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<Xns9839C4FD80E2rtwfreenetREMOVEcouk@216.196.109.145>
	<1157761731.042621.77150@p79g2000cwp.googlegroups.com>
Message-ID: <1157763615.547996.106780@h48g2000cwc.googlegroups.com>

bvdp at xplornet.com wrote:
> Cool ... and damn but you guys are fast with the answers. This appears
> to work find, but in a quick and dirty test it appears that the [list]
> version takes about 2x as long to run as the original loop. Is this
> normal?

You could also do it 'functionally' with map(), but it's ugly and would
probably fail (in this case) for non-unique list indicies; it is fast
though.

map(lambda x: tmp.extend([seq.index(x)]*x), seq)

Ps. I don't know if xrange is faster...I thought the difference was
that range created a temporary variable holding a range object and
xrange created an iterator?

Regards,
Jordan



From antoine at vo.lu  Fri Sep 29 11:59:31 2006
From: antoine at vo.lu (Antoine De Groote)
Date: Fri, 29 Sep 2006 17:59:31 +0200
Subject: retry in exception
Message-ID: <451d4294$1@news.vo.lu>

Hi,

I hope I don't upset anybody by comparing Python to Ruby (again). Is 
there something like Ruby's retry keyword in Python? I couldn't find any 
thing...

Regards,
antoine


From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sat Sep 23 05:35:49 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sat, 23 Sep 2006 11:35:49 +0200
Subject: Application logging to screen and file - any favorite modules (no
	luck on cheeseshop)
References: <1158990612.569086.204230@b28g2000cwb.googlegroups.com>
Message-ID: <4nkdflFaj5doU1@individual.net>

metaperl wrote:

> Hello, I am looking for a module which has
> * log levels
> * output to stdout and file (either/or based on config)
> * nicely formatted log output (e.g., indentation when appropriate)

Sorry for being nosey, but how'd you use indentation in a log?

Regards,


Bj?rn

-- 
BOFH excuse #154:

You can tune a file system, but you can't tune a fish (from most
tunefs man pages)



From jstroud at mbi.ucla.edu  Wed Sep 27 06:54:36 2006
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 27 Sep 2006 10:54:36 GMT
Subject: Computer Language Popularity Trend
In-Reply-To: <1159349867.827187.270390@h48g2000cwc.googlegroups.com>
References: <1159326181.251558.123500@m73g2000cwd.googlegroups.com>
	<1159349867.827187.270390@h48g2000cwc.googlegroups.com>
Message-ID: <MLsSg.16766$IA.2205@newssvr11.news.prodigy.com>

mark.hoemmen at gmail.com wrote:
> Xah Lee wrote:
>> Computer Language Popularity Trend
>>
>> This page gives a visual report of computer languages's popularity, as
>> indicated by their traffic level in newsgroups. This is not a
>> comprehensive or fair survey, but does give some indications of
>> popularity trends.
>>
>> http://xahlee.org/lang_traf/index.html
> 
> Careful there with the sweeping generalizations and quick judgments
> about languages :)
> 
> Furthermore, it's nice to conclude that Lisp is getting more popular,
> but we also have to take into account global trends (maybe more people
> are using usenet in general? maybe the total number of programmers in
> the world is increasing?).
> 
> Still, it's nice to see trends plotted out like that, thanks for the
> work :)
> 
> mfh
> 

Finally, a contribution of substance from lambda. Who woulda thunk it?


From rdm at rcblue.com  Sat Sep  9 22:44:08 2006
From: rdm at rcblue.com (Dick Moores)
Date: Sat, 09 Sep 2006 19:44:08 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<3fj3g2djfj226hru3iug0n1c9g144kc4co@4ax.com>
Message-ID: <7.0.1.0.2.20060909194216.05e73150@rcblue.com>

At 01:10 PM 9/8/2006, Doug Stell wrote:
>Try www.TextPad.com. I've used it for years and love it. It
>understands many programming language constructs and can be taught to
>understand python so that things show up in color.

Any tips on how to teach TextPad to understand python?

Thanks,

Dick Moores



From mccredie at gmail.com  Tue Sep 12 12:56:33 2006
From: mccredie at gmail.com (Matimus)
Date: 12 Sep 2006 09:56:33 -0700
Subject: I wish I could add docstrings to vars.
In-Reply-To: <slrnegdcem.epp.matt@mwilson.umlcoop.net>
References: <slrnegdcem.epp.matt@mwilson.umlcoop.net>
Message-ID: <1158080193.882913.14650@m73g2000cwd.googlegroups.com>

It seems that you are getting some complex answers with confusing
examples. So, here is hopefully a less confusing example:

class MyDict(dict):
    """MyDict doc-string!"""

#then to use it

d = MyDict()
d['something'] = whatever you want

This solution leaves it open to do whatever you want with the class,
but it's better than nothing.

Matthew Wilson wrote:
> I build a lot of elaborate dictionaries in my interpreter, and then I
> forget exactly how they work.  It would be really nice to be able to add
> notes to the dictionary.
>
> Is there some way to do this now?
>
> Matt
>
>
> --
> A better way of running series of SAS programs:
> http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles



From propheci at gmail.com  Wed Sep 27 16:29:56 2006
From: propheci at gmail.com (Xiaolei)
Date: 27 Sep 2006 13:29:56 -0700
Subject: Auto color selection PIL
Message-ID: <1159388996.482575.294460@h48g2000cwc.googlegroups.com>

Hi,

I'm trying to plot some points in an image.  Each point has an
associating type and I'd like to have different colors (preferrably of
high contrast) for different types.  The number of types in the data
file is unknown a priori.  Is there a way to do this at runtime?

The "solution" I have so far has been to manually create a list of
10-20 contrasting colors and just go off that list at runtime.  This
works most of the time since the number of types is usually less than
10.  But I'd like a general solution.

Thank you.



From mikeowens at gmail.com  Tue Sep 12 13:02:00 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Tue, 12 Sep 2006 12:02:00 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <1158078714.772319.52690@i42g2000cwa.googlegroups.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
	<mailman.303.1158019822.5279.python-list@python.org>
	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<mailman.308.1158028136.5279.python-list@python.org>
	<1158035728.028640.75440@h48g2000cwc.googlegroups.com>
	<mailman.357.1158071054.5279.python-list@python.org>
	<1158078714.772319.52690@i42g2000cwa.googlegroups.com>
Message-ID: <df2316bd0609121002h13d48620nb3e25d932ea8b031@mail.gmail.com>

On 12 Sep 2006 09:31:54 -0700, mensanator at aol.com <mensanator at aol.com> wrote:

> > To use your specious analogy, it represents another way of doing
> > things, which you admit yourself works. That's your justification for
> > calling Richard Hipp a crackpot?
>
> What was Richard Hipp's justification for slandering the
> writers of the SQL Language Specification?

Slander? Richard wrote a free and open source relational database the
way he wanted to, in a way that seems useful to him, and apparently
thousands of other people. You are free to write your own open source
relational database as well which has its own deviations from the
standard. I say this because I'd love to see you write the worlds
first SQL compliant database, and do it in under 30,000 lines of C,
and make it portable across both operating systems and byte orders,
capable of being run on cell phones and low power environments.

The only slander I see are in your ill-informed posts on this mailing
lists which should really be directed to the SQLite list. Apparently,
you are too afraid to insult the SQLite community to its face, and
seek refuge on the Python list.

> > > > It's clear. You're just way too smart for SQLite.
> > >
> > > Did you see my solution to Rick Shepard's problem in the
> > > thread "Parsing String, Dictionary Lookups, Writing to
> > > Database Table"?
> >
> > The point being? -- you can write Python code and feel entitled to
> > condescending and rude?
>
> Is there anything more rude than describling the SQL Language
> Specification as a bug that needs to be fixed?

Yes, namely calling respectable people (who selflessly write free and
open source software in their spare time) crackpots. Also, not lifting
a finger to seek help or effect change, but taking every effort to
insult. And finally, there is entertaining the notion that people live
to serve your needs. Yes, there are things that are clearly more rude.


From danielmarkhot at gmail.com  Wed Sep 20 13:39:26 2006
From: danielmarkhot at gmail.com (Daniel Mark)
Date: 20 Sep 2006 10:39:26 -0700
Subject: Do we need to delete "ImageDraw.Draw" after using it?
Message-ID: <1158773966.613009.11470@e3g2000cwe.googlegroups.com>

Hello all:

I am looking the sample code posted on PIL website
http://www.pythonware.com/library/pil/handbook/imagedraw.htm

################################################
<<Draw a Grey Cross Over an Image>>

import Image, ImageDraw

im = Image.open("lena.pgm")

draw = ImageDraw.Draw(im)
draw.line((0, 0) + im.size, fill=128)
draw.line((0, im.size[1], im.size[0], 0), fill=128)
del draw # ===>>>> Why we should delete this object draw?

# write to stdout
im.save(sys.stdout, "PNG")
#################################################

Is there any general rule that we must delete the object after using
it?


Thank you
-Daniel



From ironfroggy at gmail.com  Mon Sep 18 17:58:51 2006
From: ironfroggy at gmail.com (Calvin Spealman)
Date: Mon, 18 Sep 2006 17:58:51 -0400
Subject: [ANN] Code Golf Challenge : 1,000 Digits Of Pi
In-Reply-To: <450EB2B7.1070407@carldr.com>
References: <450EB2B7.1070407@carldr.com>
Message-ID: <76fd5acf0609181458p7047b13duf50271856428c898@mail.gmail.com>

On 9/18/06, Carl Drinkwater <carl at carldr.com> wrote:
> Hi all,
>
> Code Golf's 12th challenge has just been added to the site.  It asks you
> to calculate the first 1,000 digits of Pi - Something I'm sure most of
> you have thought about, but never done.  You can see the challenge at :
>
>    http://codegolf.com/1000-digits-of-pi
>
> For those who haven't heard of codegolf.com, it can be described as
> "allowing you to show off your code-fu by trying to solve coding
> problems using the least number of keystrokes."
>
> The site currently supports Perl, PHP, Python and Ruby with Scheme to
> (hopefully) follow soon.  Your entries are automatically executed and
> scored - No need to wait for someone to validate your code.
>
> Other challenges include implementing the Vigenere Cipher, Prime
> factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer.  All
> of the challenges are competitive but there is still scope to well in
> them, even if you're new to the site.
>
> I hope some of you will find this interesting, and sorry for disturbing
> you if not!
>
> Have fun,
> Carl.

Just once, I would like to see a programming contest that was judged
on the quality of your code, not the number of bytes you managed to
incomprehensively hack it down to.


From george.sakkis at gmail.com  Wed Sep 13 22:26:31 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 13 Sep 2006 19:26:31 -0700
Subject: stock quotes
In-Reply-To: <bF2Og.230637$k%3.67439@dukeread12>
References: <bF2Og.230637$k%3.67439@dukeread12>
Message-ID: <1158200791.601382.69880@d34g2000cwd.googlegroups.com>

Donlingerfelt wrote:
> I would like to download stock quotes from the web, store them, do
> calculations and sort the results.  However I am fairly new and don't have a
> clue how to parse the results of a web page download.   I can get to the
> site, but do not know how to request the certain data  need.  Does anyone
> know how to do this?  I would really appreciate it.  Thanks.

This will get you started:
http://www.crummy.com/software/BeautifulSoup/

George



From aravindmail007 at yahoo.co.in  Wed Sep  6 08:23:29 2006
From: aravindmail007 at yahoo.co.in (Aravind)
Date: Wed, 6 Sep 2006 17:53:29 +0530
Subject: python vs java
Message-ID: <edmefq$t5n$1@news4.fe.internet.bosch.com>

hi,

some of my friends told that python and java are similar in the idea of
platform independency. Can anyone give me an idea as i'm a newbie to java
and python but used to C++. My idea is to develop an app which can run both
in windows and linux.

Pls help.

Thanks in advance....




From irmen.NOSPAM at xs4all.nl  Fri Sep 29 14:39:02 2006
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Fri, 29 Sep 2006 20:39:02 +0200
Subject: creating a small test server on my local computer
In-Reply-To: <9bdTg.54$1n3.399@news.tufts.edu>
References: <9bdTg.54$1n3.399@news.tufts.edu>
Message-ID: <451d684a$0$4516$e4fe514c@news.xs4all.nl>

John Salerno wrote:
> Ok, this is completely unnecessary so I don't intend to get into stuff 
> that's beyond my skill, but I'm wondering how simple it would be to use 
> Python to create a server that runs on my computer so I can test my 
> webpages (because otherwise I have to keep sending them to our IT person 
> so he can upload them to the server).

Why do you need to use Python for the server?

> The catch is that I need a server that supports SSI and I have no clue 
> how to write something like this. If it's already been included in the 
> standard library, then that would be great, otherwise I won't really 
> mess with it.

Apache supports server side includes. And is fairly straightforward
to install (or even already installed on most linux systems that I know
of) Configuring can be a bit troublesome depending on your demands,
but there is lots and lots of information available.

--Irmen


From MonkeeSage at gmail.com  Fri Sep 29 00:17:38 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 28 Sep 2006 21:17:38 -0700
Subject: Questions on Using Python to Teach Data Structures and Algorithms
References: <mailman.1984.1159445104.10490.python-list@python.org>
	<mailman.878.1159449832.10491.python-list@python.org>
	<1159475984.109684.227700@h48g2000cwc.googlegroups.com>
Message-ID: <1159503458.273771.24310@m73g2000cwd.googlegroups.com>

sturlamolden wrote:
> Thus I stand by my original claim. Essentlially:
>
> def cons(car,cdr): return (car,cdr) # or [car,cdr]
> def car(cons): return cons[0]
> def cdr(cons): return cons[1]

I guess you were talking about implementing the _structure_ of lisp
lists in python syntax (as you seem to imply), not trying to emulate
their _behavior_ with one-dimensional python lists. That makes sense,
and your code is correct in that case; but in the other case Brendon's
code is correct. So everyone was right (only, about different things).
:)

Regards,
Jordan



From sjmachin at lexicon.net  Fri Sep 15 05:19:25 2006
From: sjmachin at lexicon.net (John Machin)
Date: 15 Sep 2006 02:19:25 -0700
Subject: add without carry
In-Reply-To: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
References: <1158308274.680123.100070@i42g2000cwa.googlegroups.com>
Message-ID: <1158311964.932017.186470@i3g2000cwc.googlegroups.com>


Hugh wrote:
> I would like to perform an addition without carrying of two integers...
> I've got no idea how to do this in python, although I've been using it
> for web/cgi/db work for a few years now.
>

In multiword addition in assembly language, one uses a normal ADD
instruction on the lowest-order pair of words, and an ADC (or ADDC or
whatever) i.e add *with* carry which adds in the carry bit from the
previous operation for each subsequent pair of words. IOW, addition
*without* carrying is normal, and I don't recall hearing the expression
before ......

Do you possibly mean: add two 32-bit integers such the result fits in
32 bits i.e. discard the generated carry bit, keep the low-order
32-bits?

If so, that's simply (a + b) & 0xFFFFFFFF (in Python as well as a few
other languages).

If you meant a different number of bits, well the answer for 8 bits
would be (a + b) & 0xFF.

Otherwise, you need to provide some examples of two integers and what
"addition without carrying" produces.

HTH,
John



From 71david at libero.it  Sun Sep 10 13:15:40 2006
From: 71david at libero.it (David)
Date: Sun, 10 Sep 2006 19:15:40 +0200
Subject: wxPython, how to autoresize a frame?
Message-ID: <108kqfnsxedqr.19vxlomc0xszb.dlg@40tude.net>

Dear all,

In a wxPyhton frame I make a group of controls hiding by pressing a button
and i want the whole frame to resize accordingly.

The test GUI I wrote is structured like this:

frame
  |
  +-sizer0 (BoxSizer, 1 slot)
      |
      +-panel (style=wx.EXPAND)
          |
          +-sizer1 (BoxSizer vertical, 2 slots)
              |
              +-sizer2 (FlexGridSizer, 2x2)
              |   |
              |   +-controls to hide
              |
              +-button


The problem is that, when sizer2 containig hidden controls collapses to
zero dimensions, the panel resizes, but sizer1 and sizer0 don't!
Consequently the frame does not want to autoresize.

You con dowload the code here:
http://www.box.net/public/evfxs7cp5j

Someone con help me?

Thanks

David


From __peter__ at web.de  Mon Sep 18 07:56:31 2006
From: __peter__ at web.de (Peter Otten)
Date: Mon, 18 Sep 2006 13:56:31 +0200
Subject: PythonCAD question
References: <eeluh9$2tp$1@newsreader2.utanet.at>
	<eelvij$74k$02$1@news.t-online.com>
	<eem0df$7ai$1@newsreader2.utanet.at>
Message-ID: <eem1et$ene$03$1@news.t-online.com>

Franz Steinhaeusler wrote:

>> The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is
>> running on a Mac. The missing module is rather a symptom than the cause
>> of the bug.

> On the homepage,
> http://www.pythoncad.org/
> there is the text:
> 
> 
> "PythonCAD does run on Windows if you have the Windows
> ports of the required libraries and modules."

I don't doubt that. Looking into PythonCad.py, though, I find

# main routine to start Cocoa-based PythonCad

On Windows gtkpycad.py with

# main routine to start GTK-based pycad

looks more promising...

Peter


From frank at chagford.com  Thu Sep  7 03:38:05 2006
From: frank at chagford.com (Frank Millman)
Date: 7 Sep 2006 00:38:05 -0700
Subject: Question about subclassing and overriding methods
Message-ID: <1157614685.713343.224930@i3g2000cwc.googlegroups.com>

Hi all

Assume a simple class -

class Test(object):
    def __init__(self,x):
        self.x = x
    def getx(self):
        print self.x

Test(1).getx()
Test(2).getx()
Test(3).getx()

As expected, the results are 1,2,3

Assume a slight variation, where given a particular condition I want a
particular method to behave differently. I know that I could subclass,
but for various reasons I preferred to do it this way -

class Test(object):
    def __init__(self,x,y=False):
        self.x = x
        if y:
            self.getx = self.getx2
    def getx(self):
        print self.x
    def getx2(self):
        print self.x * 2

Test(1).getx()
Test(2,True).getx()
Test(3).getx()

As expected, the results are 1,4,3

Now assume a subclass of the above class, where I want the method to
behave diferently again -

class Test2(Test):
    def __init__(self,x,y=False):
        Test.__init__(self,x,y)
    def getx(self):
        print self.x*3

Test2(1).getx()
Test2(2,True).getx()
Test2(3).getx()

Here I was hoping that the results would be 3,6,9 but they are 3,4,9.

I thought that getx in Test2 would override getx in Test, even if getx
in Test has been replaced by getx2, but clearly that is not happening.
Can someone explain why.

Thanks

Frank Millman



From python at hope.cz  Fri Sep 15 02:17:57 2006
From: python at hope.cz (Lad)
Date: 14 Sep 2006 23:17:57 -0700
Subject: Is there a way to find IP address?
In-Reply-To: <mailman.41.1158163545.10491.python-list@python.org>
References: <1158162713.834702.212950@m73g2000cwd.googlegroups.com>
	<mailman.41.1158163545.10491.python-list@python.org>
Message-ID: <1158301077.702087.55680@k70g2000cwa.googlegroups.com>


Fredrik Lundh wrote:
> Lad wrote:
>
> > Normaly I can log user's IP address using os.environ["REMOTE_ADDR"] .
> > If a user  is behind a proxy, I will log  proxy's IP address only.
> > Is there a way how to find a real IP user's address?
>
> os.environ["HTTP_X_FORWARDED_FOR"]
>
> (but that can easily be spoofed, and is mostly meaningless if the user
> uses local IP addresses at the other side of the proxy, so you should
> use it with care)
>
> </F>
Hello Fredrik,
Thank you for your reply.
How can be HTTP_X_FORWARDED_FOR easily  spoofed? I thought that  IP
address is not possible change.
Thank you for your reply
L.



From askar.bektassov at gmail.com  Wed Sep 27 15:20:54 2006
From: askar.bektassov at gmail.com (askar.bektassov at gmail.com)
Date: 27 Sep 2006 12:20:54 -0700
Subject: How to read() twice from file-like objects (and get some data)?
Message-ID: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>

Hello all, please correct me, if I do...

from ClientForm import ParseResponse
from urllib2 import urlopen
...
response=urlopen(url)
forms=ParseResponse(response)

I won't be able to

print response.read()

in order to see HTML source anymore. In other words I will see only an
empty string. Suggestions?



From duncan.booth at invalid.invalid  Thu Sep 28 03:50:30 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 28 Sep 2006 07:50:30 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8cdq$fui$2@lust.ihug.co.nz>
	<slrnehg538.hi7.sybrenUSE@schuimige.stuvel.eu>
	<ef9nib$snj$1@lust.ihug.co.nz>
	<slrnehhr52.ln4.sybrenUSE@schuimige.stuvel.eu>
	<efb1me$a43$1@lust.ihug.co.nz>
	<1159279263.25441.28.camel@dot.uniqsys.com>
	<mailman.686.1159279958.10491.python-list@python.org>
	<slrnehie29.pdu.sybrenUSE@schuimige.stuvel.eu>
	<efc5b3$can$1@lust.ihug.co.nz>
	<Xns984B5837B9F7Aduncanbooth@127.0.0.1>
	<efdelg$o1c$4@lust.ihug.co.nz>
	<Xns984B6DC5B990Bduncanbooth@127.0.0.1>
	<efdhp7$uqq$1@lust.ihug.co.nz>
	<Xns984B793317A15duncanbooth@127.0.0.1>
	<efdnqd$adv$1@lust.ihug.co.nz>
	<Xns984B8482155F6duncanbooth@127.0.0.1>
	<efeqpd$8vh$1@lust.ihug.co.nz>
Message-ID: <Xns984C59EF7ED48duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:
> In message <Xns984B8482155F6duncanbooth at 127.0.0.1>, Duncan Booth wrote:
>> Deary me. Did you actually test out that bit of code before you
>> posted it? 
> 
>>>> execfile("QuoteSQL.py")
>>>> EscapeSQLWild(r"\%")
> '\\\\%'
>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%")
> '"%\\\\\\\\%%"'
>>>> EscapeSQLWild(r"\%") == r"\\%"
> True
>>>> SQLString("%" + EscapeSQLWild(r"\%") + "%") == r'"%\\\\%%"'
> True
> 
Ah, so that's a 'no' then. I can't see any tests there. How do you know 
that those strings work correctly MySQL queries?

Please, open your mind to what I'm saying. I'm not trying to criticise your 
aims, just trying to point out the simple fact that your EscapeSQLWild 
function has a bug. If nothing else, the fact that you are finding this so 
hard to understand shows that there is a need for a correctly written 
function to do this.

The fix to EscapeSQLWild to get test_escapebackslashwild2 to work is a 
trivial change, and not suprisingly also makes the other failing test in my 
script (the one using parameterised queries and EscapeSQLWild) pass.

Again, please, try running the script I posted, and in particular 
test_escapebackslashwild2. It uses the SQL query you yourself created, and 
it fails because it matches something it shouldn't.


From skip at pobox.com  Wed Sep 27 08:39:21 2006
From: skip at pobox.com (skip at pobox.com)
Date: Wed, 27 Sep 2006 07:39:21 -0500
Subject: baffling sql string
In-Reply-To: <451a6cc4@127.0.0.1>
References: <451a6cc4@127.0.0.1>
Message-ID: <17690.28921.198111.491606@montanaro.dyndns.org>


    DarkBlue> Following is a code snippet from a pythoncard app
    DarkBlue> the problem is with the sql string called iq1
    DarkBlue> If either mysubject or mytalktext contains an 
    DarkBlue> apostrophe the update fails :
    DarkBlue> Example: mysubject="Let's Eat"  this fails
    DarkBlue>          mysubject="Lets Eat"   this works fine

    DarkBlue> What options do I have to avoid this issue but still can use
    DarkBlue> apostrophes in my input data ?

You don't mention what database adapter you're communicating with, but they
all have argument quoting facilities.  You should be using them instead of
doing the string interpolation yourself.

For example, if I was using MySQL, my code might look something like this:

    self.cur.execute("update MSGTALK"
                     "  set msgdate='NOW', subject=%s, talktext=%s"
                     "  where msgno=%s",
                     (self.components.TextField1.text,
                      self.components.TextArea1.text,
                      self.myamsgno))

Skip


From ldo at geek-central.gen.new_zealand  Tue Sep 26 03:12:57 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Tue, 26 Sep 2006 19:12:57 +1200
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>	<ef5m1h$h1k$4@lust.ihug.co.nz>	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>	<ef7uue$mn8$1@lust.ihug.co.nz>	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>	<ef81f6$rej$3@lust.ihug.co.nz>	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>	<Xns98496B28F5FBFduncanbooth@127.0.0.1>	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>	<ef8d06$fui$5@lust.ihug.co.nz>	<mailman.560.1159188345.10491.python-list@python.org>
	<ef9nmi$snj$2@lust.ihug.co.nz>
	<mailman.637.1159253927.10491.python-list@python.org>
Message-ID: <efajs7$hbo$1@lust.ihug.co.nz>

In message <mailman.637.1159253927.10491.python-list at python.org>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>>
>> In message <mailman.560.1159188345.10491.python-list at python.org>, Steve
>> Holden wrote:
>> 
>> 
>>>When you use the DB API correctly and paramterise your queries you still
>>>need to quote wildcards in search arguments, but you absolutely
>>>shouldn't quote the other SQL specials.
>>>
>>>That's what parameterised queries are for on the first place...
>> 
>> 
>> So you're suggesting I quote the wildcards, then rely on autoquoted
>> parameters to handle the rest? Unfortunately, that's stupid mistake
>> number 2.
> 
> Ah, so your quoting function will deduce the context in which arguments
> intended for parameter substitution in the query will be used? Or are
> you suggesting that it's unwise to rely on autoquoted parameters?

No, I'm saying it's _incorrect_ to use the existing autoquoting mechanism in
combination with a separate function that escapes the wildcards. I
previously described the two stupid mistakes that can arise from having a
separate function for doing just the wildcard quoting: this is the second
one.

> That could have a serious impact on the efficiency of some repeated
> queries. 

Correctness comes before efficiency. It's no point doing it quickly if
you're doing it wrong.


From http  Tue Sep 12 05:50:46 2006
From: http (Paul Rubin)
Date: 12 Sep 2006 02:50:46 -0700
Subject: How to get the "longest possible" match with Python's RE module?
References: <1158030298.213930.276770@i42g2000cwa.googlegroups.com>
	<1158031603.390298.27720@d34g2000cwd.googlegroups.com>
	<1158036663.669437.194480@i3g2000cwc.googlegroups.com>
	<1158038345.439986.45600@i3g2000cwc.googlegroups.com>
	<1158040298.528737.52520@e3g2000cwe.googlegroups.com>
	<bOsNg.396$6S3.2@newssvr25.news.prodigy.net>
	<1158052130.208312.300250@d34g2000cwd.googlegroups.com>
Message-ID: <7xirjtbeh5.fsf@ruckus.brouhaha.com>

"Licheng Fang" <fanglicheng at gmail.com> writes:
> I think if the backtrack is carried out in an exaustive way, we may say
> the engine trys every possibility on the NFA, though it's not an NFA
> itself.

The backtracking engine really can recognize languages that are not
describable by classical regexps, by using backreferences, negation,
etc.  But exactly what it can do is nowhere near as well-understood as
what classical regexps can do.

I seem to remember that the fully general problem of recognizing
regexps with negation is very hard, so the backtracking matcher either
has to reject some strings it should really match, or else it has to
bog down horribly with certain kinds of patterns.


From george.sakkis at gmail.com  Fri Sep 15 18:58:30 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 15 Sep 2006 15:58:30 -0700
Subject: something for itertools
References: <mailman.156.1158356427.10491.python-list@python.org>
Message-ID: <1158361110.726215.98250@i3g2000cwc.googlegroups.com>

Daniel Nogradi wrote:
> In a recent thread,
> http://mail.python.org/pipermail/python-list/2006-September/361512.html,
> a couple of very useful and enlightening itertools examples were given
> and was wondering if my problem also can be solved in an elegant way
> by itertools.
>
> I have a bunch of tuples with varying lengths and would like to have
> all of them the length of the maximal and pad with None's. So
> something like
>
> a = ( 1, 2, 3 )
> b = ( 10, 20 )
> c = ( 'x', 'y', 'z', 'e', 'f' )
>
> should turn into
>
> a = ( 1, 2, 3, None, None )
> b = ( 10, 20, None, None, None )
> c = ( 'x', 'y', 'z', 'e', 'f' )
>
> Of course with some len( ) calls and loops this can be solved but
> something tells me there is a simple itertools-like solution.
>
> Any ideas?

Not the most readable one-liner of all times, but here it goes:

a,b,c = zip(*map(None,a,b,c))


George



From metaperl at gmail.com  Mon Sep 25 08:45:52 2006
From: metaperl at gmail.com (metaperl)
Date: 25 Sep 2006 05:45:52 -0700
Subject: Leave the putdowns in the Perl community,
	the Python world does not need them
Message-ID: <1159188351.960448.43660@d34g2000cwd.googlegroups.com>

I was shocked to see the personal insults hurled in this thread:
http://groups.google.com/group/comp.lang.python/browse_thread/thread/d0758cb9545cad4b

I have been very pleased with Python developers regardless of skill
levels in both the IRC channel as well as here - no hot attitudes. No
holier than thou put ons. I was just sinking into the comradery and
cooperative nature of this new powerful community when I saw that
thread.

Well, I hope that the fact that 99% of the Python community, from Guido
von Rossum on down continues to exemplify how a language can be good
and the people can be friendly and that the other 1% get inspired by
their positivity and switch as well...



From danb_83 at yahoo.com  Wed Sep 27 14:16:26 2006
From: danb_83 at yahoo.com (Dan Bishop)
Date: 27 Sep 2006 11:16:26 -0700
Subject: does anybody earn a living programming in python?
In-Reply-To: <1159285305.562672.152460@d34g2000cwd.googlegroups.com>
References: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>
	<e69d3ed20609260500x29b8daa9xd111c39bed9997d3@mail.gmail.com>
	<mailman.671.1159275340.10491.python-list@python.org>
	<1159278999.374338.76170@m73g2000cwd.googlegroups.com>
	<1159280328.671934.42180@h48g2000cwc.googlegroups.com>
	<1159285305.562672.152460@d34g2000cwd.googlegroups.com>
Message-ID: <1159380986.289804.185550@b28g2000cwb.googlegroups.com>

Paul Boddie wrote:
> George Sakkis wrote:
>
> [Oslo, Norway short of 300-500 Java developers]
>
> > Um, how many of these "lots of Java developers looking for work" live
> > in, or are willing to relocate to, Oslo?
>
> Well, I really meant to say that the "lots of Java developers" I've
> seen actually are in Oslo. Certainly, every time this topic comes up in
> some article, people tend to complain about a mismatch between employer
> claims and their own experiences trying to get hired, and there
> wouldn't be much of a debate if those people were not within commuting
> distance.
>
> > Another point might be that many ads prefix the offered position with "senior", and my
> > guess is that most of those looking for work don't really qualify, for any reasonable
> > definition of "senior".
>
> It's quite possible that a lot of the people out in the job market
> don't have the experience with Java that employers supposedly demand,
> although in many cases that isn't anything to do with how long they've
> been in the business (one definition of "senior"). However, I'd
> question the need only for senior developers in a market for a
> particular technology, since it would suggest that either everyone
> seems to think that they're doing rocket science, or the technology
> isn't the most appropriate or efficient way to do the work (especially
> given the supposed lack of developers).

Are you hiring? :-)

It's so frustrating seeing all those job postings that require a
"mimimum 10 years experience".



From oliver.andrich at gmail.com  Sun Sep 24 11:52:25 2006
From: oliver.andrich at gmail.com (Oliver Andrich)
Date: Sun, 24 Sep 2006 17:52:25 +0200
Subject: ctypes question about call by reference
Message-ID: <6f7b52d0609240852x77d669b8g9007b6a4a1ab5684@mail.gmail.com>

Hi,

hopefully someone with some ctypes experience can help me. I guess
this is a trivial task again, but I have been googling, reading,
experimenting the whole afternoon without any success.

I have a given C function signature:

char *MagickGetException(MagickWand *wand,ExceptionType *severity)

- ExceptionType is an enum
- MagickWand is somewhat strange, but so far it works fine without any
type mangling.

How would I wrap this thing using ctypes? Can anybody help me with that?

Best regards,
Oliver

-- 
Oliver Andrich <oliver.andrich at gmail.com> --- http://roughbook.de/


From bignose+hates-spam at benfinney.id.au  Mon Sep 18 20:23:44 2006
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 19 Sep 2006 10:23:44 +1000
Subject: Python programs always open source?
References: <450d07e1$0$19729$88260bb3@free.teranews.com>
	<1158569205.973604.54760@m7g2000cwm.googlegroups.com>
	<mailman.227.1158581355.10491.python-list@python.org>
	<450eb358$0$19900$4d3efbfe@news.sover.net>
	<mailman.233.1158592608.10491.python-list@python.org>
	<450ebb84$0$19909$4d3efbfe@news.sover.net>
Message-ID: <87hcz4ln5b.fsf@benfinney.id.au>

Leif K-Brooks <eurleif at ecritters.biz> writes:

> >> Ben Finney wrote:
> >>> So long as you're not distributing some or all of Python itself,
> >>> or a derivative work, the license for Python has no legal effect
> >>> on what license you choose for your own work.

> I was replying to Ben Finney's claim that in a hypothetical world
> where Python was licensed under the GPL, there would still be no
> restriction on distributing Python programs under a closed-source
> license.

My claim (and IANAL) is that it doesn't matter *what* license Python
is distributed under; unless you do something with Python that is a
right of the copyright holder, such as distributing part or all of
Python, the copyright license terms of Python have no legal effect on
what license you choose for your own work.

-- 
 \           "People are very open-minded about new things, as long as |
  `\      they're exactly like the old ones."  -- Charles F. Kettering |
_o__)                                                                  |
Ben Finney



From ldo at geek-central.gen.new_zealand  Sun Sep 24 04:42:31 2006
From: ldo at geek-central.gen.new_zealand (Lawrence D'Oliveiro)
Date: Sun, 24 Sep 2006 20:42:31 +1200
Subject: Timeline for Python?
References: <mailman.497.1159035007.10491.python-list@python.org>
	<1159060365.363391.238090@d34g2000cwd.googlegroups.com>
Message-ID: <ef5gbt$721$3@lust.ihug.co.nz>

In message <1159060365.363391.238090 at d34g2000cwd.googlegroups.com>, Blair P.
Houghton wrote:

> wesley chun wrote:
>>
>> 1. never write against older versions of Python... you will only
>>     obsolete your book even faster (well, "sooner")
> 
> I believe there is some market for documentation of older
> versions of software.  Many installations are constrained
> by the cost of upgrading and can not migrate to a newer
> version.

And they can afford to buy books??

If they're that strapped for cash, it's cheaper to access documentation on
the Web.


From sybrenUSE at YOURthirdtower.com.imagination  Thu Sep  7 03:21:13 2006
From: sybrenUSE at YOURthirdtower.com.imagination (Sybren Stuvel)
Date: Thu, 7 Sep 2006 09:21:13 +0200
Subject: sending emails using python
References: <1157607449.917092.54630@d34g2000cwd.googlegroups.com>
Message-ID: <slrnefvi38.n6g.sybrenUSE@schuimige.stuvel.eu>

sridhar enlightened us with:
> iam having user account on an exchangeserver.
> with that can i send an email using python?
>
> if iam using the following code iam getting error
>
>
> fromAddress = 'sridhar_kasturi at satyam.com'
> toAddress = 'sridhar_kasturi at satyam.com'
> msg = "Subject: Hello\n\nThis is the body of the message."
                       ^^^^

You need \r\n\r\n there. Line-ends in email messages should be DOS
line-ends.

> Traceback (most recent call last):
>   File
> "C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout\InitialMailExample.py",
> line 5, in ?
>     server = smtplib.SMTP("hstmsg002",25)
>   File "C:\Python24\lib\smtplib.py", line 244, in __init__
>     (code, msg) = self.connect(host, port)
>   File "C:\Python24\lib\smtplib.py", line 307, in connect
>     (code, msg) = self.getreply()
>   File "C:\Python24\lib\smtplib.py", line 351, in getreply
>     raise SMTPServerDisconnected("Connection unexpectedly closed")
> SMTPServerDisconnected: Connection unexpectedly closed

Well that's useless. You could install a network sniffer
(http://www.ethereal.com/) and find out what's actually sent over the
network connection, and where things go wrong.

Sybren
-- 
Sybren St??vel
St??vel IT - http://www.stuvel.eu/


From bryce.bolton at gmail.com  Thu Sep 21 02:29:39 2006
From: bryce.bolton at gmail.com (Bryce Bolton)
Date: Wed, 20 Sep 2006 23:29:39 -0700
Subject: pexpect baudrate and mode settings
In-Reply-To: <e23133680609202308v7f8d2e7eo7ca41c6df2935f91@mail.gmail.com>
References: <e23133680609202308v7f8d2e7eo7ca41c6df2935f91@mail.gmail.com>
Message-ID: <e23133680609202329y5df440fdwaba26823a843788c@mail.gmail.com>

Hi,

>
> I've written a short script in pexpect to open the serial port and get 100
> bytes.  The script does receive a string of garbage, but not the good text
> seen when I open a minicom terminal and look at ttyS0.
>
> I know that the baud rate is wrong, and the other settings (such as 8N1)
> are unknown to me and may also be wrong.
>
>
> Question: In Linux, how do I set the baud rate = 19200, 8N1 in pexpect
> scenario?  (this example is close to the pexpect documentation, but I used
> the fdpexpect.fdspawn extension because pexpect.spawn didn't work.
>
> #!/bin/python
> import pexpect
> import os
> import fdpexpect
> fd = os.open("/dev/ttyS0", os.O_RDWR|os.O_NONBLOCK|os.O_NOCTTY )
> m = fdpexpect.fdspawn(fd) # Note integer fd is used instead of usual
> string.
> m.send("+++") # Escape sequence
> m.send("ATZ0\r") # Reset modem to profile 0
> string1 = m.read(100)
> print "%s" % string1
>
>
> Would the baudrate setup be similiar under windows?  Any examples out
> there?
>
> In short, setting of critical parameters is unclear under pexpect's
> documentation, but may be obvious to those more familiar with os.open or
> other filesystem internals.
>
> Thanks,
> Bryce
>
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From h.b.furuseth at usit.uio.no  Wed Sep 20 13:02:38 2006
From: h.b.furuseth at usit.uio.no (Hallvard B Furuseth)
Date: Wed, 20 Sep 2006 19:02:38 +0200
Subject: Python regular expression question!
References: <1158771260.946086.312390@b28g2000cwb.googlegroups.com>
Message-ID: <hbf.20060920g9x@bombur.uio.no>

"unexpected" <sumesh.chopra at gmail.com> writes:

> I'm trying to do a whole word pattern match for the term 'MULTX-'
>
> Currently, my regular expression syntax is:
>
> re.search(('^')+(keyword+'\\b')

\b matches the beginning/end of a word (characters a-zA-Z_0-9).
So that regex will match e.g. MULTX-FOO but not MULTX-.

Incidentally, in case the keyword contains regex special characters
(like '*') you may wish to escape it: re.escape(keyword).

-- 
Hallvard


From garys at ihug.com.au  Thu Sep 14 05:22:07 2006
From: garys at ihug.com.au (Gary Stephenson)
Date: Thu, 14 Sep 2006 19:22:07 +1000
Subject: descriptor problems
Message-ID: <45091f01$0$7317$5a62ac22@per-qv1-newsreader-01.iinet.net.au>

I want to define a class-level attribute that will be shared by all 
subclasses.  That is, I want this class, every subclass of this class, every 
instance of this class and every instance of every subclass to be able to 
read and write to the _same_ slot/variable.  But I can't figure out how to 
do it.

My attempts so far have led me to using a descriptor as follow, but it 
doesn't get me where I want to be:

class sharedClassVar(object):
    def __init__(self,x=None):
        print "creating"
        self.value = x
    def __get__(self,ob,cls):
        print "getting"
        return self.value
    def __set__(self,ob,x):
        print "setting"
        self.value = x


class A( object ):
    # install it like this I guess:
    cls2 = sharedClassVar(5)

class B( A ):
    pass

print A.cls2  # so far so good
o = A()
o2 = B()
print o.cls2  # ok
print o2.cls2  # ok
o.cls2 = 2
print B.cls2  # perfect
print o2.cls2  # ""
o2.cls2 = 3
print A.cls2  # ""
print o.cls2  # ""

# but I need to be able to update the value through the class
# how do I do it?
A.cls2 = 4     # whoops - we just overwrote the descriptor with an integer

A.cls2.__set__(None,4)     # AttributeError: 'int' object has no attribute 
'__set__'






From sumesh.chopra at gmail.com  Wed Sep 20 16:39:19 2006
From: sumesh.chopra at gmail.com (unexpected)
Date: 20 Sep 2006 13:39:19 -0700
Subject: Python regular expression question!
In-Reply-To: <1158781016.400431.56120@i3g2000cwc.googlegroups.com>
References: <1158771260.946086.312390@b28g2000cwb.googlegroups.com>
	<hbf.20060920g9x@bombur.uio.no>
	<1158776219.549237.14430@k70g2000cwa.googlegroups.com>
	<1158781016.400431.56120@i3g2000cwc.googlegroups.com>
Message-ID: <1158784759.904310.128270@e3g2000cwe.googlegroups.com>

Sweet! Thanks so much!



From askar.bektassov at gmail.com  Wed Sep 27 17:47:56 2006
From: askar.bektassov at gmail.com (askar.bektassov at gmail.com)
Date: 27 Sep 2006 14:47:56 -0700
Subject: How to read() twice from file-like objects (and get some data)?
References: <1159384854.439771.302730@i3g2000cwc.googlegroups.com>
	<efek2f$mbr$1@news.albasani.net> <87k63pngwp.fsf@pobox.com>
Message-ID: <1159393676.195220.84730@h48g2000cwc.googlegroups.com>

Exactly what I needed!

import StringIO from StringIO
...
content=response.read()
forms=ParseFile(StringIO(content), response.geturl())
...

Thank you all!



From sjmachin at lexicon.net  Wed Sep 27 18:06:29 2006
From: sjmachin at lexicon.net (John Machin)
Date: 27 Sep 2006 15:06:29 -0700
Subject: pythonol
In-Reply-To: <pan.2006.09.27.17.52.35.815812@dogstar.ukfsn.org>
References: <pan.2006.09.27.17.52.35.815812@dogstar.ukfsn.org>
Message-ID: <1159394789.621427.191750@e3g2000cwe.googlegroups.com>


John Martin wrote:
> 'pythonol' is a program for learning spanish. I think it's a really great
> program. Unfortunately it ceased to work when I moved to SuSE 10 and 10.1 .
> The author makes it clear on her website that she has devoted all the time
> she's prepared to and won't maintain it. I think it's a shame as it's a
> valuable educational tool. Sadly I know bugger all about python, this is
> the error I get when running it.
> ---------------------------------------------------------------
> /usr/share/Pythonol/sqlite/__init__.py:1: RuntimeWarning: Python C API version
> mismatch for module _sqlite: This Python has API version 1012, module
> _sqlite has version 1011.

A good start might be to get a version of sqlite that's compatible with
your version of Python (or vice versa).

But I'd say that's likely to be only the first of a list of things that
need fixing ... perhaps someone who knows gtk can chip in and help. You
can help by providing some very basic information: what version of
Python are you running (would save guessing)? what is the URL of the
pythonol website (would save googling)?

Cheers,
John



From jyoti.chhabra at gmail.com  Mon Sep 18 03:19:20 2006
From: jyoti.chhabra at gmail.com (JyotiC)
Date: 18 Sep 2006 00:19:20 -0700
Subject: modules in diff. file
Message-ID: <1158563960.722719.121140@k70g2000cwa.googlegroups.com>

hi,

i have a prog. and i want diving the code in different files.
there will be one mail file which will call modules or
variables(global) from differnet files
how can i do this.
code is very big and i it's getting difficult to manage in same file.

thanx in advance



From franz.steinhaeusler at gmx.at  Wed Sep 27 03:25:54 2006
From: franz.steinhaeusler at gmx.at (Franz Steinhaeusler)
Date: Wed, 27 Sep 2006 09:25:54 +0200
Subject: One program in different GUI Toolkits
References: <eeqn0i$d8n$1@newsreader2.utanet.at>
Message-ID: <cf9kh2dft7s8g6akqchlqd24pjisr51ji1@4ax.com>

On Wed, 20 Sep 2006 08:27:30 +0200 (CEST), Franz Steinhaeusler
<franz.steinhaeusler at gmx.at> wrote:

>Hello NG,
>
>I have a suggestion.
>
>For simplifying learning or switching between different GUI
>Toolkits, I could imagine to have one short clearly presented
>program in different GUI Toolkits.
>
>What about for example wxProject?
>
>http://wiki.wxpython.org/index.cgi/WxProject 
>or some other suggestion to take as base program.
>(could contain menus, buttons, listboxes, dialogs, ...)
>
>I would be very interested how it would looks in:
>wxPython
>pyGtk
>pyQt
>TkInter
>
>
>Maybe in:
>Wax
>PythonCard
>PyFLTK
>...
>
>
>Anybody is interested in implementing in one other GUI?
>We could put in on one Python wiki page for example.
>
>Many thanks in advance!

Hello all,

thank you for your replies.

Hmm, ideally the program is short and a little useful,
to that I agree.

What about a small text editor using the scintilla control?
It should be available for Pythoncard, wxPython, pygtk and pyQt
(qtscintilla).
With a small find dialog, open, save should be enough for the beginning.

Other suggestions?


From gagsl-py at yahoo.com.ar  Tue Sep 12 20:53:52 2006
From: gagsl-py at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 12 Sep 2006 21:53:52 -0300
Subject: python reference counting and exceptions
In-Reply-To: <4506FE79.8040206@arcor.de>
References: <4506FE79.8040206@arcor.de>
Message-ID: <7.0.1.0.0.20060912214618.05950d50@yahoo.com.ar>

At Tuesday 12/9/2006 15:37, Andreas Huesgen wrote:

>In c++, it is possible to write a locking system similar to the one below:
>
>
>void myFunction()
>{
>         # create a resource lock. Locks some resource
>         ResourceLock myLock;
>
>         # the following line may throw an exception
>         doStuff();
>}
>
>
>My question is: is there some reliable way to mimic the c++ code snipped
>above in python without adding a try-except-unlock-rethrow block around
>every peace of code that locks some resources.

Yes: the try/finally construct, which is *not* the same as a 
try/except. The finally clause is always executed, whether or not an 
exception is raised.



Gabriel Genellina
Softlab SRL 


	
	
		
__________________________________________________
Pregunt?. Respond?. Descubr?.
Todo lo que quer?as saber, y lo que ni imaginabas,
est? en Yahoo! Respuestas (Beta).
?Probalo ya! 
http://www.yahoo.com.ar/respuestas



From ilias at lazaridis.com  Tue Sep  5 09:14:14 2006
From: ilias at lazaridis.com (lazaridis_com)
Date: 5 Sep 2006 06:14:14 -0700
Subject: CONSTRUCT -
In-Reply-To: <edgpj6$vf1$1@news.albasani.net>
References: <1157215274.623256.260050@i42g2000cwa.googlegroups.com>
	<ede27d$pi9$1@news.albasani.net>
	<1157299581.865287.225320@p79g2000cwp.googlegroups.com>
	<edgpj6$vf1$1@news.albasani.net>
Message-ID: <1157462054.163916.57060@m73g2000cwd.googlegroups.com>

Georg Brandl wrote:
> lazaridis_com wrote:
> > Georg Brandl wrote:
> >> lazaridis_com wrote:
> >> > I would like to fulfill the following task:
> >> >
> >> > The construct:
> >> >
> >> > if __name__ == '__main__':
> >> >
> >> > should be changed to something like:
> >> >
> >> > if identifier.name == '__main__':
> >> >
> >> > The term "identifier" should be selected based on the meaning of the
> >> > __double-underscore-enclosure__ of the entities.
> > ...
> >
> >> import sys
> >> class _identifier:
> >>     def __getattr__(self, name):
> >>         return sys._getframe(1).f_globals['__%s__' % name]
> >> identifier = _identifier()
> >
> > ok, I understand.
> >
> > this one would work with modules.
> >
> > but how would look a more general solution, which would work with
> > objects too?
>
> Why can't you try to come up with something yourself? You should have
> had enough exposure to the Python language by now.
>
> Georg

I am not a (python) domain expert.

Thus I am asking here for available standard-solutions, before I
implement an own solution.



From jaysherby at gmail.com  Fri Sep 15 21:33:29 2006
From: jaysherby at gmail.com (Jay)
Date: 15 Sep 2006 18:33:29 -0700
Subject: mp3 libs and programs
In-Reply-To: <mailman.161.1158370142.10491.python-list@python.org>
References: <R52467755.195.487.1@mx-extra>
	<mailman.161.1158370142.10491.python-list@python.org>
Message-ID: <1158370409.274912.294970@h48g2000cwc.googlegroups.com>

Only if I have to.  PyMedia is a pain and a half to build and why do
that if I can just pipe it out to some other program?


Tim Williams wrote:
> On 15 Sep 2006 18:16:41 -0700, Jay <jaysherby at gmail.com> wrote:
> > I'm writing a python script that involves playing mp3 files.  The first
> > approach I had was sending commands to unix command-line programs in
> > order to play them.  I tired mpg123 and moosic, but there was a key
> > feature to my program's success that's missing.  SEEK!  I need to be
> > able to start playing a song at an arbitrary point in the song.  I
> > can't find anything to let me do this.  Does anyone have any advice or
> > has anyone needed something similar?
> 
> http://pymedia.org/   maybe
> 
> :)



From http  Wed Sep 27 20:08:30 2006
From: http (Paul Rubin)
Date: 27 Sep 2006 17:08:30 -0700
Subject: OT: productivity and long computing delays
References: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>
	<1159399405.821242.45750@i3g2000cwc.googlegroups.com>
Message-ID: <7xirj8am4h.fsf@ruckus.brouhaha.com>

beliavsky at aol.com writes:
> Two hours is a long time! Maybe it takes a programmer 10 minutes to get
> his mind focused on a new project, but that still leaves 110 productive
> minutes. I think many programmers in corporate environments would
> regard 2-hour blocks as luxuries. I have wondered the same thing as you
> (how to be productive during "gaps"), but in situations where I am
> often waiting a minute for a program to compile or run, not hours. I
> suggest immersing yourself in the second project during 2-hour gaps.

Yeah, I don't multitask very well, unfortunately.  I think this
specific situation is a little bit more frustrating than usual,
because I don't really have a second project of nearly such priority,
but I can't just go to the beach or something while these builds are
running.  Also, I'm not exactly trying to develop code for this task
(i.e. implement a new subsystem involving writing a lot).  Rather, I'm
trying to make some small changes to a complex existing program, which
means I make a few small edits, then end up having to rebuild, and
take this huge delay before I can find the next bug, and by then I've
lost all my context.  I'm in somewhat of a hurry to finish this, but
I'm slowed down a lot by all these rebuilds.  The 2 hour builds are
actually a big improvement since I chopped out some subsystems that
were taking a lot longer.  There's another issue too, which is that
the codebase keeps changing as other people check stuff in, so by the
time I've gotten done testing my stuff, I have to sync up and test
some more, etc.

I suppose I'm mostly just blowing off steam by posting about this.  I
do think I might buy a Turion X2 1.6 ghz machine soon, which should be
about 2.5x faster than what I'm using right now.

Anyway, my build just finished so I better get back to it ;-).  But I
think the overall task is about done, unless there's another bug.


From MonkeeSage at gmail.com  Tue Sep 12 03:45:12 2006
From: MonkeeSage at gmail.com (MonkeeSage)
Date: 12 Sep 2006 00:45:12 -0700
Subject: Is it just me, or is Sqlite3 goofy?
References: <1157418942.105174.228650@p79g2000cwp.googlegroups.com>
	<pan.2006.09.05.05.58.03.689280@gmx.net>
	<1157477207.223616.210780@h48g2000cwc.googlegroups.com>
	<mailman.32.1157478476.5279.python-list@python.org>
	<1157484212.885076.304340@h48g2000cwc.googlegroups.com>
	<mailman.316.1158040286.5279.python-list@python.org>
	<1158042568.767805.221940@m73g2000cwd.googlegroups.com>
Message-ID: <1158047112.449514.188120@i42g2000cwa.googlegroups.com>

mensanator at aol.com wrote:
> But it was stated in the sqlite docs that ALL SQL databases
> use static types implying that sqlite will be incompatible
> with any "heavy" database should the need arise to migrate
> upwards. The issue is not that there will be compatibilty
> problems with any data migration but that the truth is exactly
> opposite of what's claimed in Section 13.13.
>
> I'm not saying sqlite can't be used, what I'm asking for
> is that the documentation lay the facts out and I'll decide
> whether I can make this work in my application. Lying about
> it makes you sound like Microsoft.

I thought your qualm was with the pysqlite docs, not the sqlite docs
(which apparently do make it plain how the database handles typing)?

Also, as others have mentioned, there are a number of ways to ensure
type safety, as long as you know how the database works (which as I
understand was your original point -- that it should be better
documented how it works in the pysqlite docs; and I am inclined to
agree -- at least a mention with link to the sqlite docs would be
helpful). But given that type safety is not an issue if you use those
ways of ensuring it, then the move to a fuller database _will_ be
relatively easy. If you don't want to change anything in your database
creation/update code ala check constraints, you can always explicitly
validate from python, which can be done programatically (very simple
example -- you could also use regexp patterns to validate; e.g., string
fields not only must be type str, but must not match '^\d+$', &c):

rows = [
['1', 'fred', '0051', '/home/fred'],
['2', 'bob', '0054', '/home/bob'],
['3', 'bork', '>056', '/home/bork']
]
def validate(row):
  return [int(row[0]), str(row[1]), int(row[2]), str(row[3])]
for i in xrange(len(rows)):
  rows[i] = validate(rows[i]) # <- throws an exception on the third row
  # database stuff here...

Regards,
Jordan



From duncan.booth at invalid.invalid  Wed Sep 27 08:34:48 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 Sep 2006 12:34:48 GMT
Subject: baffling sql string
References: <451a6cc4@127.0.0.1>
Message-ID: <Xns984B8A202CE4Cduncanbooth@127.0.0.1>

DarkBlue <nomail at nixmail.com> wrote:

> iq1="update MSGTALK set msgdate='NOW',subject='%s',talktext='%s' where
> msgno= %d " % (mysubject,mytalktext,mymsgno) 
> try:
>    self.cur.execute(iq1)

Use parameterised queries and get rid of the quotes in the SQL:

iq1="update MSGTALK set msgdate='NOW',subject=%s,talktext=%s where
msgno= %d "
try:
   self.cur.execute(iq1, (mysubject,mytalktext,mymsgno))
...

depending on your actual database you might need to use something other 
than %s to specify the parameters. Check out 'paramstyle' for your database 
connection.


From rhymes at myself.com  Sun Sep 17 14:58:07 2006
From: rhymes at myself.com (Lawrence Oluyede)
Date: Sun, 17 Sep 2006 20:58:07 +0200
Subject: Webbrowser written totally in Python
References: <eek5bg$lm2$1@newsreader2.utanet.at>
Message-ID: <1hltu6b.auf2xx1samw8yN%rhymes@myself.com>

Franz Steinhaeusler <franz.steinhaeusler at gmx.at> wrote:
> is there any (GUI) webbrowser written completly in Python?

AFAIK Grail is the only attempt but it's _very_ old:
http://grail.sourceforge.net/

Made in Python, Tkinter and supports HTML 2.0 (3.2 partially)

-- 
Lawrence - http://www.oluyede.org/blog
"Nothing is more dangerous than an idea
if it's the only one you have" - E. A. Chartier


From nicolasfr at gmail.com  Sat Sep 16 13:40:43 2006
From: nicolasfr at gmail.com (nicolasfr at gmail.com)
Date: 16 Sep 2006 10:40:43 -0700
Subject: Pythondocs.info : collaborative Python documentation project
In-Reply-To: <mailman.181.1158427823.10491.python-list@python.org>
References: <1158426978.573858.159320@m7g2000cwm.googlegroups.com>
	<mailman.181.1158427823.10491.python-list@python.org>
Message-ID: <1158428443.355245.310730@d34g2000cwd.googlegroups.com>


Wildemar Wildenburger wrote:
> nicolasfr at gmail.com wrote:
> > I have read many messages of people complaining about the documentation,
> > it's lack of examples and the use of complicated sentences that you
> > need to read 10 times before understanding what it means.
>  >
> Where have you read that?
>
> wildemar

I don't mean to start a flame war about this but here are some
reference of people, who like me, don't like the current python doc:
http://xahlee.org/UnixResource_dir/writ/python_doc.html
http://mail.python.org/pipermail/python-list/2005-May/280634.html
...
You really can find dozens of such discussions on the net.

I think the PHP documentation is a really good one in comparison.

Nicolas.



From robert.kern at gmail.com  Fri Sep 29 16:01:45 2006
From: robert.kern at gmail.com (Robert Kern)
Date: Fri, 29 Sep 2006 15:01:45 -0500
Subject: another distutils question
In-Reply-To: <451D7994.40100@harvee.org>
References: <efjmjp$mr2$1@sea.gmane.org>	<efjpma$16d$1@sea.gmane.org>	<451D753E.7060707@harvee.org>	<efjsuo$d73$1@sea.gmane.org>
	<451D7994.40100@harvee.org>
Message-ID: <efju33$h88$1@sea.gmane.org>

Eric S. Johansson wrote:

> Now I get to puzzle out how to install the CGI plus images plus 
> stylesheets plus plus plus mess.  Probably a bit outside of the scope of 
> distutils even if the CGI programs are Python.  ;-)

I recommend installing the data inside the package itself. In 2.4, use the 
package_data keyword in setup().

   http://docs.python.org/dist/node12.html

For 2.3, I recommend using setuptools which packports this feature. Actually, I 
recommend setuptools regardless as it provides a utility for locating the 
package data from inside your code.

   http://peak.telecommunity.com/DevCenter/setuptools
   http://peak.telecommunity.com/DevCenter/PkgResources

2.2 is tricky, but there are ways. Let me know if you need them.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco



From efrat_regev at yahoo.com  Thu Sep 28 21:12:13 2006
From: efrat_regev at yahoo.com (efrat)
Date: Fri, 29 Sep 2006 04:12:13 +0300
Subject: Thanks to DSA Q. Repliers (was: Re: Questions on Using Python to
	Teach Data Structures...) 
In-Reply-To: <451b2c0b@news.bezeqint.net>
References: <451b2c0b@news.bezeqint.net>
Message-ID: <451c8cae$1@news.bezeqint.net>

efrat wrote:
>   Hello,
> 
>   I'm planning to use Python in order to teach a DSA (data structures 
> and algorithms) course ...


   Hello,

   Many thanks, repliers, for the informative and useful answers.

   Bye,

   Efrat


From blue99 at interia.pl  Wed Sep 13 03:24:01 2006
From: blue99 at interia.pl (Rob Wolfe)
Date: 13 Sep 2006 00:24:01 -0700
Subject: How to compare to directories?
In-Reply-To: <1158127776.413699.170750@e63g2000cwd.googlegroups.com>
References: <1158127776.413699.170750@e63g2000cwd.googlegroups.com>
Message-ID: <1158132241.364699.298220@i3g2000cwc.googlegroups.com>


could.net at gmail.com wrote:
> I want to compare 2 directories: dir1 and dir2.
> What I want to do is to get these informations:
> 1. does they have the same number of files and sub-directories?
> 2. does each file with the same name have the same size and date
> information?
>
> So, how can I do it in python?

Here is a nice example:

http://docs.python.org/lib/os-file-dir.html

Look for description of function walk.

HTH,
Rob



From fakeaddress at nowhere.org  Fri Sep 22 16:34:12 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Fri, 22 Sep 2006 20:34:12 GMT
Subject: Python Threading
In-Reply-To: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>
References: <1158737227.874763.6390@k70g2000cwa.googlegroups.com>
Message-ID: <8NXQg.7296$Ij.779@newssvr14.news.prodigy.com>

daniel wrote:
> Can anyone explain the main points in working with threads in Python.

They are system threads, so the main points are much like in
other languages. Examine how thread.lock works, and look up the
queue module.

> Why use threading and not Thread.

There's no reason not to use thread, but threading adds
some useful items, such as setDaemon(), condition variables,
semaphores, and maybe rlocks. Try to avoid using the timeout
argument on condition variables if efficiency matters; Event and
queue.queue are implemented on top of condition variables, so
same deal.

> I have read an article that i have to
> subclass the Thread class and override some function.

You can, but that's the hard way. The following snippet runs
func(arg1, arg2) in a daemon thread:

       import threading
       # ...

       t = threading.Thread(target=func, args=(arg1, arg2))
       t.setDaemon(True)
       t.start()


-- 
--Bryan


From highpayinghomejobs at yahoo.com  Sat Sep  2 12:38:42 2006
From: highpayinghomejobs at yahoo.com (highpayinghomejobs at yahoo.com)
Date: 2 Sep 2006 09:38:42 -0700
Subject: Find the best price on gas in your local area for FREE....
Message-ID: <1157215122.268733.62140@74g2000cwt.googlegroups.com>

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your local area.  Just punch in your zip code and all the work is done
for you.  No Cost!   Absolutely FREE info.

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From sjmachin at lexicon.net  Thu Sep 14 00:08:33 2006
From: sjmachin at lexicon.net (John Machin)
Date: 13 Sep 2006 21:08:33 -0700
Subject: How do I converted a null (0) terminated string to a Python
	string?
References: <1158205264.318504.169260@p79g2000cwp.googlegroups.com>
Message-ID: <1158206913.616487.163410@b28g2000cwb.googlegroups.com>

Michael wrote:
> Hi All,
>
> I've received (via UDP) a null terminated string and need to convert it
> into a Python string. Can anyone tell me how this is done? If it helps,
> I know the number of characters in the string.
>

I think you mean NUL, not null.

What have you received it into, if it's not a Python string?

You probably need/want this:

if strg[-1] == "\0":
    strg = strg[:-1]
alternatively:
strg = strg.rstrip("\0") # requires Python 2.2.2 or later

It's possible you may be talking about a fixed length string which
contains useful_stuff + "\0" + padding -- in that case you need

strg = strg.split("\0")[0] # grab upto (but not including) the first
NUL (if any)

If you're not sure what you've got, print repr(the_input_string)

HTH,
John



From fakeaddress at nowhere.org  Wed Sep  6 14:22:53 2006
From: fakeaddress at nowhere.org (Bryan Olson)
Date: Wed, 06 Sep 2006 18:22:53 GMT
Subject: threading support in python
In-Reply-To: <XnCLg.15853$%j7.6985@newssvr29.news.prodigy.net>
References: <mailman.10336.1157379308.27775.python-list@python.org>
	<1157381880.697001.260070@m73g2000cwd.googlegroups.com>
	<1157387626.242107.92070@p79g2000cwp.googlegroups.com>
	<1157398593.191972.240270@p79g2000cwp.googlegroups.com>
	<7xy7sziego.fsf@ruckus.brouhaha.com>
	<hIgLg.21224$kO3.3954@newssvr12.news.prodigy.com>
	<1157476298.716537.109330@h48g2000cwc.googlegroups.com>
	<XnCLg.15853$%j7.6985@newssvr29.news.prodigy.net>
Message-ID: <1mELg.9292$q63.2257@newssvr13.news.prodigy.com>

I wrote:
> Ah, O.K. Like Paul, I was unaware how Unix file worked with
> mmap.

Insert "locking" after "file".


-- 
--Bryan




From gregpinero at gmail.com  Sat Sep 23 17:54:32 2006
From: gregpinero at gmail.com (=?ISO-8859-1?Q?Gregory_Pi=F1ero?=)
Date: Sat, 23 Sep 2006 17:54:32 -0400
Subject: Reverse a String?
In-Reply-To: <ef47ge$qvb$1@sea.gmane.org>
References: <312cfe2b0609231402y4241d7cep36f1a4a73a82ead8@mail.gmail.com>
	<ef47ge$qvb$1@sea.gmane.org>
Message-ID: <312cfe2b0609231454l2678aa96ifb0e59611295d973@mail.gmail.com>

On 9/23/06, Robert Kern <robert.kern at gmail.com> wrote:
> Not in that form, no, since this already exists:
>
>    text[::-1]

Wow, that's really cool!  Here are my questions:

1. How long has this thing been going on? I didn't know slice even
took an extra argument like that.

2. Where can I get the lowdown on everything there is to know about
slice?  Since I've obviously been living in ignorance all these years!

Thanks again,

Greg


From __peter__ at web.de  Sat Sep  9 05:45:51 2006
From: __peter__ at web.de (Peter Otten)
Date: Sat, 09 Sep 2006 11:45:51 +0200
Subject: Map with an extra parameter
References: <1157759625.325998.154340@d34g2000cwd.googlegroups.com>
Message-ID: <edu2ei$jjh$03$1@news.t-online.com>

ml1n wrote:

> I'm not really sure how to explain this so maybe some example code is
> best.  This code makes a list of objects by taking a list of ints and
> combining them with a constant:
> 
> class foo:
>   def __init__(self):
>      self.a = 0
>      self.b = 0
> 
> def func(a,b):
>   f = new foo()
>   f.a = a
>   f.b = b
>   return f
> 
> constants = [1]*6
> vars = [1,2,3,4,5,6]
> objects = map(func,vars,constants)
> 
> In the real world I need to do this as quick as possible (without
> resorting to c) and there are several constants. (The constant is only
> constant to each list so I can't make it a default argument to func.)
> My question is, can anyone think of a way to do this efficiently
> without having to use the `dummy` list of constants and would it be
> quicker?

Here are two more ways to achieve what you want, but you have to time them
youself.

>>> from itertools import starmap, izip, repeat
>>> class Foo:
...     def __init__(self, a, b):
...             self.a = a
...             self.b = b
...     def __repr__(self):
...             return "Foo(a=%r, b=%r)" % (self.a, self.b)
...
>>> constants = repeat(1)
>>> vars = [1, 2, 3]
>>> list(starmap(Foo, izip(vars, constants)))
[Foo(a=1, b=1), Foo(a=2, b=1), Foo(a=3, b=1)]

This requires Python 2.5:

>>> from functools import partial
>>> map(partial(Foo, b=1), vars)
[Foo(a=1, b=1), Foo(a=2, b=1), Foo(a=3, b=1)]


Peter


From mailer at forums.com  Wed Sep 20 00:33:01 2006
From: mailer at forums.com (Dean Card)
Date: Tue, 19 Sep 2006 21:33:01 -0700
Subject: Pythonic way to condese my array
Message-ID: <Zv3Qg.699$ef2.677@fed1read09>

I have a list of dictionaries where each dictionary defines, among other 
things, a row and column number.  So, my list might look like this:
[{'row':1, 'column':1, otherdata}, {'row':1, 'column':2, 'otherdata}...]

This data is passed to flash and used there to create a grid of objects that 
are placed based on the row and column values.

For a given set of data I may have values column values in the range of 1, 9 
inclusive.

What I would like to do is take my list of dictionaries (like the one listed 
above) and shift the column numbers down to fill in missing values... 
example (only the column key,value pair is show for simplification):

[{'column':1}, {'column':2}, {'column', 4}, {'column': 8}, {'column':2}, 
{'column', 4}]

If this were the dataset... I would want to change all 4s to 3 and all 8s to 
4.  That way I end up with 1 ...  4 instead of 1, 2, 4, and 8.

Is there some slick way to do this?

Thanks




From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 22 10:56:37 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 22 Sep 2006 16:56:37 +0200
Subject: Isn't bool __invert__ behaviour "strange"?
References: <1158934100.450529.304810@i3g2000cwc.googlegroups.com>
Message-ID: <4nibt5Fag01tU2@individual.net>

Saizan wrote:

> Why subclassing bool from int either __invert__ or __neg__ haven't
> been overrided to produce a boolean negation? 

I wonder what -True or -False should evaluate to.

Regards,


Bj?rn

-- 
BOFH excuse #297:

Too many interrupts



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From: pmo178 at yahoo.es (pmy)
Date: 11 Sep 2006 10:08:12 -0700
Subject: Hello to watch this interesting page he is on sharp 904sh
Message-ID: <1157994492.706329.78830@h48g2000cwc.googlegroups.com>



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From ralfbrand50 at gmail.com  Wed Sep  6 10:32:10 2006
From: ralfbrand50 at gmail.com (ralfbrand50 at gmail.com)
Date: 6 Sep 2006 07:32:10 -0700
Subject: Read from .glade
Message-ID: <1157553130.085947.313310@d34g2000cwd.googlegroups.com>

Hello,

I've got the following problem: I've got a Userinterface that is made
in Glade, so i've got a
.glade file. What I want is to get the id's of every widget from the
class GtkEntry from a given window.

The glade file is like

<?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM
"http://glade.gnome.org/glade-2.0.dtd">

<glade-interface>

<widget class="GtkWindow" id="TEVOinvoeren">
  <property name="visible">True</property>
  <property name="title" translatable="yes">Tevo - Invoeren</property>
  <property name="type">GTK_WINDOW_TOPLEVEL</property>
  <property name="window_position">GTK_WIN_POS_NONE</property>
  <property name="modal">False</property>
  <property name="resizable">True</property>
  <property name="destroy_with_parent">False</property>
  <property name="decorated">True</property>
  <property name="skip_taskbar_hint">False</property>
  <property name="skip_pager_hint">False</property>
  <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
  <property name="focus_on_map">True</property>
  <property name="urgency_hint">False</property>

  <child>

<widget class="GtkWindow" id="TEVOklanttoevoegen">
  <property name="visible">True</property>
  <property name="title" translatable="yes">window1</property>
  <property name="type">GTK_WINDOW_TOPLEVEL</property>
  <property name="window_position">GTK_WIN_POS_NONE</property>
  <property name="modal">False</property>
  <property name="resizable">True</property>
  <property name="destroy_with_parent">False</property>
  <property name="decorated">True</property>
  <property name="skip_taskbar_hint">False</property>
  <property name="skip_pager_hint">False</property>
  <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
  <property name="focus_on_map">True</property>
  <property name="urgency_hint">False</property>
  <signal name="destroy" handler="on_TEVOklanttoevoegen_destroy"
last_modification_time="Wed, 06 Sep 2006 08:51:33 GMT"/>

  <child>
    <widget class="GtkFixed" id="fixed10">
      <property name="visible">True</property>

      <child>
	<widget class="GtkEntry" id="entry_cnaam">
	  <property name="width_request">184</property>
	  <property name="height_request">16</property>
	  <property name="visible">True</property>
	  <property name="can_focus">True</property>
	  <property name="editable">True</property>
	  <property name="visibility">True</property>
	  <property name="max_length">0</property>
	  <property name="text" translatable="yes"></property>
	  <property name="has_frame">True</property>
	  <property name="invisible_char">*</property>
	  <property name="activates_default">False</property>
	</widget>
	<packing>
	  <property name="x">88</property>
	  <property name="y">88</property>
	</packing>
      </child>

 .....

Kind regards,

Ralf Brand



From sation at web.de  Mon Sep 25 11:45:22 2006
From: sation at web.de (Sven Ehret)
Date: Mon, 25 Sep 2006 17:45:22 +0200
Subject: Newbie question: PyQt & Form::init() SOLVED
References: <ef8jbm$l8i$1@newsreader2.netcologne.de>
	<4nq42vFbgfogU1@uni-berlin.de>
	<ef8mj2$p80$1@newsreader2.netcologne.de>
	<4nq5vgFbiqhiU1@uni-berlin.de>
Message-ID: <ef8th3$6pg$1@newsreader2.netcologne.de>

Diez B. Roggisch wrote:

> Sven Ehret wrote:
> 
>> Diez B. Roggisch wrote:
>> 
>>> Sven Ehret wrote:
>>> 
>>>> Hello List,
>>>> 
>>>> I am trying to learn Python and followed the tutorial at
>>>> http://www.cs.usfca.edu/~afedosov/qttut/. Being happy that it works, I
>>>> am now trying to do my own project, but I am having problems with
>>>> initialization of my form.
>>>> 
>>>> I want to automatically fill a couple of comboboxes upon starting the
>>>> program. I read on the net that I simply have to add a function
>>>> called ?Form1.Init()? with the content I wish to have executed at start
>>>> time. However, it never gets executed, so it seems. When I re-write the
>>>> application to have the code executed at the press of a button, it
>>>> works. What am I doing wrong?
>>> 
>>> Show us more code, and we show you the problem. At least we can try
>>> then, until someone finally implements
>>> 
>>> from __future__ import mindreading
>>> 
>>> Diez
>> 
>> Oh, sorry. *blush*
>> here is my code (two files):
>> 
>> form1.py:
>> # -*- coding: utf-8 -*-
>> 
>> # Form implementation generated from reading ui file 'form1.ui'
>> #
>> # Created: Mo Sep 25 15:38:56 2006
>> #      by: The PyQt User Interface Compiler (pyuic) 3.14.1
>> #
>> # WARNING! All changes made in this file will be lost!
>> 
>> 
>> from qt import *
>> 
>> 
>> class Form1(QDialog):
>>     def __init__(self,parent = None,name = None,modal = 0,fl = 0):
>>         QDialog.__init__(self,parent,name,modal,fl)
>> 
>>         if not name:
>>             self.setName("Form1")
>> 
>> 
>> 
>>         self.pushButton1 = QPushButton(self,"pushButton1")
>>         self.pushButton1.setGeometry(QRect(410,340,80,30))
>> 
>>         self.comboBox1 = QComboBox(0,self,"comboBox1")
>>         self.comboBox1.setGeometry(QRect(310,10,120,31))
>>         self.comboBox1.setSizeLimit(12)
>>         self.comboBox1.setMaxCount(12)
>> 
>>         self.comboBox2 = QComboBox(0,self,"comboBox2")
>>         self.comboBox2.setGeometry(QRect(431,10,60,31))
>> 
>>         self.buttonGroup1 = QButtonGroup(self,"buttonGroup1")
>>         self.buttonGroup1.setGeometry(QRect(10,50,480,200))
>> 
>>         self.pushButton3 = QPushButton(self,"pushButton3")
>>         self.pushButton3.setGeometry(QRect(200,320,101,24))
>> 
>>         self.textLabel1 = QLabel(self,"textLabel1")
>>         self.textLabel1.setGeometry(QRect(71,10,160,30))
>> 
>>         self.languageChange()
>> 
>>         self.resize(QSize(504,380).expandedTo(self.minimumSizeHint()))
>>         self.clearWState(Qt.WState_Polished)
>> 
>>         self.connect(self.pushButton1,SIGNAL("clicked()"),self.close)
>>         self.connect(self.comboBox1,SIGNAL("activated(const
>> QString&)"),self.AddMonthsToCombo)
> 
> When you just invoke
>         
> 
>           self.AddMonthsToCombo()
> 
> here, things should work.
> 
> Diez


thank you, but,

I think I was able to sort it out for myself. I had to add the function
using the QtDesigner GUI (Add Slot). Then it gets recognised as
initialization module.


From johnjsal at NOSPAMgmail.com  Sat Sep 30 16:57:51 2006
From: johnjsal at NOSPAMgmail.com (John Salerno)
Date: Sat, 30 Sep 2006 16:57:51 -0400
Subject: storing variable names in a list before they are used?
In-Reply-To: <4rzTg.5009$o71.4172@newsread3.news.pas.earthlink.net>
References: <hQeTg.57$1n3.320@news.tufts.edu>
	<451ea06c$0$14713$c3e8da3@news.astraweb.com>
	<451eb97a$0$12859$c3e8da3@news.astraweb.com>
	<4rzTg.5009$o71.4172@newsread3.news.pas.earthlink.net>
Message-ID: <451edb4e$0$30791$c3e8da3@news.astraweb.com>

Dennis Lee Bieber wrote:


> 	Longer answer... "names" is a list of strings which can be used as
> keys into a dictionary.

Thanks for all that! I like the idea of a dictionary, so I might try 
that, although it does seem to be overcomplicating things a bit (almost 
by necessity, though, given what I want to do).

But I suppose it's still a better solution than manually creating every 
widget and adding it to the sizer.


From lycka at carmen.se  Tue Sep 19 04:59:10 2006
From: lycka at carmen.se (Magnus Lycka)
Date: Tue, 19 Sep 2006 10:59:10 +0200
Subject: When is it a pointer (aka reference) - when is it a copy?
In-Reply-To: <mailman.67.1158218719.10491.python-list@python.org>
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>	<mailman.45.1158171218.10491.python-list@python.org>	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>	<2C6Og.1076$UG4.672@newsread2.news.pas.earthlink.net>
	<mailman.67.1158218719.10491.python-list@python.org>
Message-ID: <eeobgu$fim$1@wake.carmen.se>

Fredrik Lundh wrote:
> this article
> 
>     http://effbot.org/zone/python-objects.htm
> 
> may be useful for those who haven't already seen it.

I don't know how many times I've referred to, or paraphrased,
that article. Shouldn't it be incorporated into the standard
tutorial? I think it's very helpful for people who are used
to the way C etc handles variables.


From isalazar80 at yahoo.com.mx  Tue Sep 12 14:37:39 2006
From: isalazar80 at yahoo.com.mx (itzel)
Date: 12 Sep 2006 11:37:39 -0700
Subject: Create TarFile using python
Message-ID: <1158086259.439424.96720@b28g2000cwb.googlegroups.com>

I have a problem. I'm new in python and I need a script that group a
list of files using Tar file utility and then, compress that block
using a compress utility (gzip i think). I already found some
information and i try to apply it,  but my scripy doesn't work. The
first problem is when I had tried to open the file that i want to
group, a IO error appear:

f = open(log, "r")
IOError: [Errno 13] Permission denied: 'C:\\path"

I previusly asigned to "log" the path of the archive that i want to
group....

could sombody helpme???.



From sc_wizard29 at hotmail.com  Fri Sep 15 04:27:02 2006
From: sc_wizard29 at hotmail.com (sc_wizard29 at hotmail.com)
Date: 15 Sep 2006 01:27:02 -0700
Subject: Check if variable is an instance of a File object
In-Reply-To: <eedn74$e35$03$1@news.t-online.com>
References: <1158304694.673361.62600@b28g2000cwb.googlegroups.com>
	<pan.2006.09.15.07.51.10.187745@gmx.net>
	<1158307282.216407.223980@p79g2000cwp.googlegroups.com>
	<eedn74$e35$03$1@news.t-online.com>
Message-ID: <1158308822.797568.34380@p79g2000cwp.googlegroups.com>

Thanks for your help peter !



From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Fri Sep 15 13:19:54 2006
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Fri, 15 Sep 2006 19:19:54 +0200
Subject: Coding Nested Loops
References: <mailman.138.1158336868.10491.python-list@python.org>
	<eeeluk$fqv$02$1@news.t-online.com>
	<mailman.140.1158340397.10491.python-list@python.org>
Message-ID: <4n05lqF86dttU1@individual.net>

Rich Shepard wrote:
> On Fri, 15 Sep 2006, Peter Otten wrote:
 
>> It's not clear to me why you would use dictionaries, especially
>> as they are unordered; I used lists instead:

>    Because the data comes via a serial port as sequences of two
>    bytes from an
> OMR reader, and the byte pairs need to be converted into values
> meaningful to the application.

That doesn't answer the question. A list of 2-tuples would do the
same (and was ordered and could be indexed).

Regards,


Bj?rn

-- 
BOFH excuse #408:

Computers under water due to SYN flooding.



From george.sakkis at gmail.com  Wed Sep 13 22:07:46 2006
From: george.sakkis at gmail.com (George Sakkis)
Date: 13 Sep 2006 19:07:46 -0700
Subject: When is it a pointer (aka reference) - when is it a copy?
References: <1158167691.725280.204070@b28g2000cwb.googlegroups.com>
	<mailman.45.1158171218.10491.python-list@python.org>
	<1158178201.236149.261120@i3g2000cwc.googlegroups.com>
	<12ggrh7cf893o25@corp.supernews.com>
Message-ID: <1158199666.222412.184940@e63g2000cwd.googlegroups.com>

Grant Edwards wrote:
> On 2006-09-13, John Henry <john106henry at hotmail.com> wrote:

> > So, if I understand you correctly, I must make the reference
> > to a more elaborate representation.  Like:
> >
> >    i=[1,]
> >    j=i
> >    j[0]=2
> >    print i
> >
> > in order to get 2 printed.
> >
> > Correct?
>
> I suppose, for some values of "correct".  You've bound the
> names "i" and "j" to the same mutable object, then mutated that
> object.  Afterwards "i" and "i" still refer to that mutated
> object.

Another way to explain why this is so, without fuzzy terms like "a more
elaborate representation", is that although the statements "x = 2" and
"x[0] = 2" look both as "assignments" syntactically, they work quite
differently under the hood. The former binds a name ("x") to an object
("2"). The latter is syntactic sugar for a method call:
x.__setitem__(0,2). If x happens to be a list, this is equivalent to
calling the unbound method list.__setitem__(x,0,2) which, as you
already know, mutates the list x. The important thing to remember
though is that the effect of something like "x[0] = 2" depends on the
type of x. Any class can define a __setitem__(index,value) method with
arbitrary semantics; it is not (and cannot be) forced to mutate x. The
bottom line is that you can't tell in advance what "x[0] = 2" will do
without knowing the type of x. A binding OTOH like "x=2" has always the
same semantics: make the name "x" refer to the object "2".

Similarly to "x[0] = 2", something like "x.foo = 2" looks like an
assignment but it's again syntactic sugar for a (different) method
call: x.__setattr__('foo',2). All the above about __setitem__ hold for
__setattr__ too.


HTH,
George



From lh84777 at yahoo.fr  Wed Sep  6 15:26:06 2006
From: lh84777 at yahoo.fr (lh84777 at yahoo.fr)
Date: 6 Sep 2006 12:26:06 -0700
Subject: Refactor a buffered class...
In-Reply-To: <1157570469.607938.211180@m79g2000cwm.googlegroups.com>
References: <1157559718.081305.282070@m73g2000cwd.googlegroups.com>
	<mailman.86.1157565197.5279.python-list@python.org>
	<1157566390.675460.188470@e3g2000cwe.googlegroups.com>
	<1157570469.607938.211180@m79g2000cwm.googlegroups.com>
Message-ID: <1157570766.122071.27250@h48g2000cwc.googlegroups.com>


oops

> to have:
>
> this .
> this . is a .
> this . is a . test to .
> is a . test to . check if it .
> test to . check if it . works .
> check if it . works . well .
> works . well . it looks like .
well . it looks like .
it looks like .



From Eric_Dexter at msn.com  Wed Sep 20 10:13:56 2006
From: Eric_Dexter at msn.com (Eric_Dexter at msn.com)
Date: 20 Sep 2006 07:13:56 -0700
Subject: newbe's re question
In-Reply-To: <mailman.322.1158749465.10491.python-list@python.org>
References: <1158711270.737867.154700@b28g2000cwb.googlegroups.com>
	<mailman.322.1158749465.10491.python-list@python.org>
Message-ID: <1158761636.305283.184800@h48g2000cwc.googlegroups.com>


Frederic Rentsch wrote:
> Eric_Dexter at msn.com wrote:
> > All I am after realy is to change this
> >
> >  reline = re.line.split('instr', '/d$')
> >
> > into something that grabs any line with instr in it take all the
> > numbers and then grab any comment that may or may not be at the end of
> > the line starting with ; until the end of the line including white
> > spaces..  this is a corrected version from
> >
> > http://python-forum.org/py/viewtopic.php?t=1703
> >
> > thanks in advance the hole routine is down below..
> >
> >
> >
> >
> >
> >
> > [code]
> > def extractCsdInstrument (input_File_Name, output_File_Name,
> > instr_number):
> >
> >     "takes an .csd input file and grabs instr_number instrument and
> > creates output_File_Name"
> >     f = open (input_File_Name , 'r')                #opens file passed
> > in to read
> >     f2 = open (output_File_Name, 'w')               #opens file passed
> > in to write
> >     instr_yes = 'false'                             #set flag to false
> >
> >     for line in f:                                  #for through all
> > the lines
> >       if "instr" in line:                           #look for instr in
> > the file
> >            if instr_yes == 'true':                    #check to see if
> > this ends the instr block
> >                break                                #exit the block
> >
> >            reline = re.line.split('instr', '/d$')     #error probily
> > split instr and /d (decimal number into parts) $ for end of line
> >            number = int(reline[1])                  #convert to a
> > number maybe not important
> >                 if number == instr_number:            #check to see if
> > it is the instr passed to function
> >                 instr_yes = "true":                 #change flag to
> > true because this is the instr we want
> >       if instr_yes = "true":                        #start of code to
> > copy to another file
> >            f2.write(f.line)                         #write line to
> > output file
> >
> >     f.close                                         #close input file
> >     f2.close
> >
> > [/code]
> >
> >
> Eric,
>       From your problem description and your code it is unclear what
> exactly it is you want. The task appears to be rather simple, though,
> and if you don't get much useful help I'd say it is because you don't
> explain it very well.
>       I believe we've been through this before and your input data is
> like this
>
>    data = '''
>    <CsoundSynthesizer>;
>      ; test.csd - a Csound structured data file
>
>    <CsOptions>
>      -W -d -o tone.wav
>    </CsOptions>
>
>    <CsVersion>    ;optional section
>      Before 4.10  ;these two statements check for
>      After 4.08   ;   Csound version 4.09
>    </CsVersion>
>
>    <CsInstruments>
>      ; originally tone.orc
>      sr = 44100
>      kr = 4410
>      ksmps = 10
>      nchnls = 1
>      instr   1
>          a1 oscil p4, p5, 1 ; simple oscillator
>             out a1
>        endin
>    </CsInstruments>
>
>    <CsScore>
>      ; originally tone.sco
>      f1 0 8192 10 1
>      i1 0 1 20000 1000 ;play one second of one kHz tone
>      e
>    </CsScore>
>
>    </CsoundSynthesizer>
>
> Question 1: Is this your input?
> if yes:
>     Question 1.1: What do you want to extract from it? In what format?
> if no:
>     Question 1.1: What is your input?
>     Question 1.2: What do you want to extract from it? In what format?
> Question 2: Do you need to generate output file names from the data?
> (One file per instrument?)
> if yes:
>    Question 2.1: What do you want to make your file name from?
> (Instrument number?)
>
>
> Regards
>
> Frederic

I want to pass the file name to the subroutine and return a comment
string if it is there maybe it should be simplier.  I probily should
have the option of grabbing the comment in other related routines.  I
am pretty ambitious with the main program.  I did notice some code in
tcl that would be usefull to the app If I compile it..  I am probily
not ready for that though..

http://www.dexrow.com



From steve at holdenweb.com  Wed Sep 27 02:46:45 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 27 Sep 2006 07:46:45 +0100
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <efcuf3$qht$2@lust.ihug.co.nz>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>	<mailman.640.1159254809.10491.python-list@python.org>
	<efcuf3$qht$2@lust.ihug.co.nz>
Message-ID: <efd6n2$fbs$1@sea.gmane.org>

Lawrence D'Oliveiro wrote:
> In message <mailman.640.1159254809.10491.python-list at python.org>, Steve
> Holden wrote:
> 
> 
>>The fact remains that Google can chop your searching ability off at the
>>knees ...
> 
> 
> No they can't. They can only chop off your ability to use Google.
> 
[sigh]. Right, Lawrence, sorry I wasn't quite explicit enough for you.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From steve at holdenweb.com  Tue Sep 26 03:12:53 2006
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 26 Sep 2006 03:12:53 -0400
Subject: Makin search on the other site and getting data and writing in xml
In-Reply-To: <pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
References: <1159178422.607126.214270@m7g2000cwm.googlegroups.com>	<mailman.555.1159185240.10491.python-list@python.org>
	<pan.2006.09.26.05.31.29.232569@REMOVEME.cybersource.com.au>
Message-ID: <efajs3$roa$1@sea.gmane.org>

Steven D'Aprano wrote:
> On Mon, 25 Sep 2006 13:51:55 +0200, Fredrik Lundh wrote:
> 
> 
>>    http://www.google.com/terms_of_service.html
>>
>>    "You may not send automated queries of any sort to Google's system without express
>>    permission in advance from Google."
> 
> 
> I'm not just being a pedantic weasel here, but what's an automated query?
> Google's ToS is a legal document (maybe), and if both parties don't agree
> on the meanings of terms, well, then it is a lousy legal document and a
> recipe for trouble.
> 
> Google don't define "automated query"it, and I don't think they can. In
> fact, the closest they come to defining it is to list three things they
> want to prevent, NONE of which have anything to do with the distinction
> between automated and non-automated.
> 

The fact remains that Google can chop your searching ability off at the 
knees if *they* determine that you have broken the terms of service, so 
whether you agree or not becomes slightly academic.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From mikeowens at gmail.com  Mon Sep 11 20:10:20 2006
From: mikeowens at gmail.com (Mike Owens)
Date: Mon, 11 Sep 2006 19:10:20 -0500
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <ee4m16$og$1@sea.gmane.org>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>
	<ee4m16$og$1@sea.gmane.org>
Message-ID: <df2316bd0609111710t41281120ve6363561f9d92f67@mail.gmail.com>

On 9/11/06, Steve Holden <steve at holdenweb.com> wrote:

> Sure. But if you go back to the start of the thread you'll remember the
> OP was originally complaining that SQLite was being promoted in the
> Python docs as SQL compliant.

Define "SQL compliant." That's about as technically precise as saying
that something tastes like chicken.

Furthermore, I'm not responding to Python's representation of one
thing or another. I am responding to some of the ridiculous and unfair
criticisms directed at SQLite. Whatever Python did or didn't do, or
whatever PySQLite does or doesn't do, SQLite doesn't deserve to be
drug through the mud.

> You shouldn't need to
> add check constraints to verify that the value stored in an integer
> column is actually an integer.

You should if your using SQLite, and this is clearly documented:
http://www.sqlite.org/datatype3.html.

> I don't think anyone is trying to suggest that SQLite isn't a prefectly
> good tool for many purposes: it's far more sophisticated than bsddb, for
> example, and I've used both it and Gadfly (which has similar
> deficiencies when compared to strict standards) with complete satisfaction.

Then what does calling it crappy and goofy suggest?


From steve at holdenweb.com  Wed Sep  6 04:05:38 2006
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 06 Sep 2006 09:05:38 +0100
Subject: How to get all the file of a oppoint directory from a FTP
In-Reply-To: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>
References: <1157520364.694826.302600@i42g2000cwa.googlegroups.com>
Message-ID: <edlvff$t24$4@sea.gmane.org>

snowf wrote:
> There are no such a method using to download a whole directory  in  the
> lib of  ' ftplib '.
> thanks for anybody's help!
> 
If your Python distrbution contains a "Tools" directory you should look 
for the "ftpmirror.py" utility in it. If you don't have Tools then you 
can extract them from the Python source tarball.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From dannycolligan at gmail.com  Wed Sep 27 09:52:21 2006
From: dannycolligan at gmail.com (dannycolligan at gmail.com)
Date: 27 Sep 2006 06:52:21 -0700
Subject: iterator question
In-Reply-To: <1159363732.689731.279070@k70g2000cwa.googlegroups.com>
References: <mailman.716.1159290541.10491.python-list@python.org>
	<1159291272.617534.177790@h48g2000cwc.googlegroups.com>
	<1159292714.862469.228720@k70g2000cwa.googlegroups.com>
	<mailman.795.1159357323.10491.python-list@python.org>
	<1159363732.689731.279070@k70g2000cwa.googlegroups.com>
Message-ID: <1159365141.898395.125230@h48g2000cwc.googlegroups.com>

Er, whoops.  That would work if the last item in the list was 10 (and,
of course, this doesn't work for any arbitrary sequence).  Is there any
"look-ahead" function for list comprehensions?

Danny

dannycolligan at gmail.com wrote:
> Simple list comprehension?
>
> >>> l = [1,2,3,4,5,6,7,8,9,0]
> >>> [(x, x+1) for x in l if x%2 == 1]
> [(1, 2), (3, 4), (5, 6), (7, 8), (9, 10)]
>
> Danny
>
> Neal Becker wrote:
> > George Sakkis wrote:
> >
> > > johnzenger at gmail.com wrote:
> > >
> > >> def transform(seq, size):
> > >>     i = 0
> > >>     while i < len(seq):
> > >>         yield tuple(seq[i:i+size])
> > >>         i += size
> > >
> > > Or for arbitrary iterables, not just sequences:
> > >
> > > from itertools import islice
> > > def transform(iterable, size):
> > >      it = iter(iterable)
> > >      while True:
> > >          window = tuple(islice(it,size))
> > >          if not window:
> > > break
> > >          yield window
> > >
> > > George
> > >
> > 
> > Thanks guys!
> > 
> > This one above is my personal favorite.



From aleax at mac.com  Sat Sep  9 10:54:31 2006
From: aleax at mac.com (Alex Martelli)
Date: Sat, 9 Sep 2006 07:54:31 -0700
Subject: What algorithm does Python use to evaluate: if substring in string
References: <eduhvs$46c$1@news.uit.no>
Message-ID: <1hle0k3.1lialdlojudmaN%aleax@mac.com>

Tor Erik <torerik81 at gmail.com> wrote:

> I would be surprised if it is the naive:

Yep -- it's "a mix between Boyer-Moore and Horspool with a few more
bells and whistles on the top", as documented and implemented in
Objects/stringlib/fastsearch.h in the Python sources and well discussed
and explained at http://effbot.org/zone/stringlib.htm .


Alex
 


From ptmcg at austin.rr._bogus_.com  Thu Sep 21 09:53:07 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Thu, 21 Sep 2006 13:53:07 GMT
Subject: Python and CORBA
References: <1158828535.885715.311030@i3g2000cwc.googlegroups.com>
	<op.tf727isjrqur0o@eb.pragmadev>
	<1158836775.901518.85790@d34g2000cwd.googlegroups.com>
Message-ID: <7PwQg.1199$nX4.65@tornado.texas.rr.com>

"rodmc" <userprogoogle-139 at yahoo.co.uk> wrote in message 
news:1158836775.901518.85790 at d34g2000cwd.googlegroups.com...
> Thanks to everyone for their help. I had tried OmniORB and while the
> base library worked ok, the Python bit OmniORBpy seems to dislike
> working... Perhaps there is something wrong with my settings.
>
> I will also try the Python only suggestion.
>
> cheers,
>
> rod
>

Give OmniORB another shot, it is quite fully featured, including 
NamingService, Trader, idl compiler.  I found the Python integration with 
OmniORBpy worked for me, too.

-- Paul




From steve at holdenweb.com  Sat Sep 30 03:01:31 2006
From: steve at holdenweb.com (Steve Holden)
Date: Sat, 30 Sep 2006 08:01:31 +0100
Subject: PATCH: Speed up direct string concatenation by 20+%!
In-Reply-To: <1159552048.354214.198180@e3g2000cwe.googlegroups.com>
References: <1159495643.213830.289620@m7g2000cwm.googlegroups.com>	<451CD389.3010800@jessikat.plus.net>	<mailman.932.1159533269.10491.python-list@python.org>	<1159540482.924744.164420@k70g2000cwa.googlegroups.com>	<mailman.948.1159542291.10491.python-list@python.org>	<1159545255.339364.299020@k70g2000cwa.googlegroups.com>	<mailman.955.1159545644.10491.python-list@python.org>	<1159546522.251704.301530@b28g2000cwb.googlegroups.com>	<mailman.956.1159547188.10491.python-list@python.org>
	<1159552048.354214.198180@e3g2000cwe.googlegroups.com>
Message-ID: <efl4mr$9vl$1@sea.gmane.org>

Larry Hastings wrote:
> Fredrik Lundh wrote:
> 
>>so what does the benchmark look like if you actually do this ?
> 
> 
> Okay, timing this:
>   x = ""
>   for i in range(100000):
>     x += "a"
>   t = x[1] # forces the concat object to render
> 
> The result:
>   Python 2.5 release: 30.0s
>   Python 2.5 locally built: 30.2s
>   Python 2.5 concat: 4.3s
>   Improvement: 600% (1/7 of the time)
> 
> 
> /larry/
> 
Interesting. Does a comparison also force it to render? If not, I wonder 
if comparisons might not end up slower. It does sound like memory usage 
might go through the roof with this technique under certain 
circumstances, so the more extensive your tests are the more likely you 
are to see the change actually used (I'm not convinced you'll persuade 
the developers to include this).

Whether or not it does get incorporated I think it's a great 
demonstration of how amenable Python is to experimentation with 
alternate representations, and I think your project might make a very 
interesting PyCon paper for people who were thinking about joining the 
development effort but hadn't yet started.

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC/Ltd          http://www.holdenweb.com
Skype: holdenweb       http://holdenweb.blogspot.com
Recent Ramblings     http://del.icio.us/steve.holden



From bearophileHUGS at lycos.com  Sat Sep 23 06:55:09 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 23 Sep 2006 03:55:09 -0700
Subject: grabbing random words
In-Reply-To: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
References: <1158983582.284632.226580@i3g2000cwc.googlegroups.com>
Message-ID: <1159008909.126087.214890@m7g2000cwm.googlegroups.com>

Jay:
> How would I be able to grab random words from an internet source.  I'd
> like to grab a random word from a comprehensive internet dictionary.
> What would be the best source and the best way to go about this?

Why do you need to grab them from the net?
A simpler solution seems to keep a local file containing the sequence
of words. You can find some open source sequences of such words. Then
you can read all the words in a list, and use random.choice to take one
of them randomly. If you don't want to keep all the dictionary/lexer
(that can be up to 20 MB if it's a lexer) in memory you can (knowing
the len of the file) seek a random position, and read 20-30 bytes, and
take the word inside it (or you can create a dictionary file where each
word is contained in in a fixed len of chars, so you can seek exactly a
single word).

Bye,
bearophile



From sjdevnull at yahoo.com  Sat Sep 16 14:39:41 2006
From: sjdevnull at yahoo.com (sjdevnull at yahoo.com)
Date: 16 Sep 2006 11:39:41 -0700
Subject: PostgreSQL, psycopg2 and OID-less tables
In-Reply-To: <1158386881.666330.246150@d34g2000cwd.googlegroups.com>
References: <6xyOg.2274$dL2.1462@fe20.usenetserver.com>
	<1158386881.666330.246150@d34g2000cwd.googlegroups.com>
Message-ID: <1158431981.048450.27810@i42g2000cwa.googlegroups.com>

Frank Millman wrote:
> Dale Strickland-Clark wrote:
> > Now that OIDs have been deprecated in PostgreSQL, how do you find the key of
> > a newly inserted record?
> >

>
> I used to use 'select lastval()', but I hit a problem. If I insert a
> row into table A, I want the id of the row inserted. If it is a complex
> insert, which triggers inserts into various other tables, some of which
> may also be auto-incrementing, lastval() returns the id of the row last
> inserted into any auto-incrementing table.
>
> I therefore use the following -
>     cur.execute("select currval('%s_%s_Seq')" % (tableid, columnid)

Aren't both of these inherently racey?  It seems to me like you need
some kind of atomic insert-and-return-id value; otherwise you don't
know if another thread/process has inserted something else in the table
in between when you call insert and when you select lastval/currval.

Or does postgres have some transactional atomicity here?

I'm very interested in an answer to the OP's question as well.  As far
as I can tell, the best you can do is make the ID a primary key, select
the nextval _before you insert, explicitly set it on insert, and then
you'll get an error if you lost a race and you can select nextval, set
it, and try again (repeat until success).

That's nasty and I'm sure there's a real solution but I haven't found
it yet.



From dclist at gmail.com  Tue Sep  5 22:21:26 2006
From: dclist at gmail.com (dclist at gmail.com)
Date: 5 Sep 2006 19:21:26 -0700
Subject: Using "Content-Disposition" in HTTP download
In-Reply-To: <1157444327.071803.113660@74g2000cwt.googlegroups.com>
References: <1157389315.923598.305720@i3g2000cwc.googlegroups.com>
	<1157444327.071803.113660@74g2000cwt.googlegroups.com>
Message-ID: <1157509286.423485.25680@m73g2000cwd.googlegroups.com>


Justin Ezequiel wrote:
> dclist at gmail.com wrote:
> > What is the correct way to download a file through HTTP and save it to
> > the file name suggested by "Content-Disposition"?
> >
>
> Perhaps something along the lines of the following?
<snip>

Thank you kindly.



From Brendon at BrendonTowle.com  Thu Sep  7 07:17:18 2006
From: Brendon at BrendonTowle.com (Brendon Towle)
Date: Thu, 7 Sep 2006 07:17:18 -0400
Subject: sending emails using python
In-Reply-To: <mailman.408.1157615403.5278.python-list@python.org>
References: <mailman.408.1157615403.5278.python-list@python.org>
Message-ID: <78531184-E7B6-4572-86E6-1AD4BA882D39@BrendonTowle.com>


On Sep 7, 2006, at 3:50 AM, "sridhar"  
<ramasridhar.kasturi at gmail.com>wrote:


> iam having user account on an exchangeserver.
> with that can i send an email using python?
>
> if iam using the following code iam getting error
>
>
> fromAddress = 'sridhar_kasturi at satyam.com'
> toAddress = 'sridhar_kasturi at satyam.com'
> msg = "Subject: Hello\n\nThis is the body of the message."
> import smtplib
> server = smtplib.SMTP("hstmsg002",25)
> server.sendmail(fromAddress, toAddress, msg)
>
> error:
>
> Traceback (most recent call last):
>   File
> "C:\sridhar\Beginning_Python\Beginning_Python\Chapter16\tryitout 
> \InitialMailExample.py",
> line 5, in ?
>     server = smtplib.SMTP("hstmsg002",25)
>   File "C:\Python24\lib\smtplib.py", line 244, in __init__
>     (code, msg) = self.connect(host, port)
>   File "C:\Python24\lib\smtplib.py", line 307, in connect
>     (code, msg) = self.getreply()
>   File "C:\Python24\lib\smtplib.py", line 351, in getreply
>     raise SMTPServerDisconnected("Connection unexpectedly closed")
> SMTPServerDisconnected: Connection unexpectedly closed
>

I saw a similar error when I was not following the server's  
authentication protocol -- either failing to authenticate when it  
wanted it, or authenticating when it didn't want it. Here's the code  
I use -- tested on both an Exchange server and on Comcast's SMTP  
servers. It assumes some globals (in all caps) which you need to set  
first.

def emailGivenString(host=SMTP_HOST, fromAddr=FROM_ADDR,
                      toAddr=TO_ADDR, subject='', body='', auth=False):
     server = smtplib.SMTP(host)
     if auth:
         server.login('username', 'password')
     outMessage = 'From: %s\rTo: %s\rSubject: %s\r%s' %
                  (FROM_HEADER, TO_HEADER, subject, body)
     server.sendmail(fromAddr, toAddr, outMessage)

If this doesn't work, I second the previous suggestion of talking to  
the server admin.

B.

--
Brendon Towle, Ph.D.   <Brendon at BrendonTowle.com>  +1-412-362-1530
?Debugging is twice as hard as writing the code in the first place.  
Therefore,
if you write the code as cleverly as possible, you are, by  
definition, not
smart enough to debug it.? ? Brian W. Kernighan




From fredrik at pythonware.com  Thu Sep 28 11:27:15 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 28 Sep 2006 17:27:15 +0200
Subject: best way to get data into a new instance?
In-Reply-To: <j%QSg.44$1n3.417@news.tufts.edu>
References: <j%QSg.44$1n3.417@news.tufts.edu>
Message-ID: <efgpki$emn$1@sea.gmane.org>

John Salerno wrote:

> So I'm wondering, is the best way to get all this information into the 
> object to just have a really long __init__ method that takes each argument?

really long __init__ argument lists only work if most argument have 
reasonable defaults, and you're prepared to use keyword arguments when 
creating the objects.  and don't mind writing the field names over and 
over and over and over again.

really long positional argument lists are really bad; it's way too easy 
to mess up the order, and end up stuffing the wrong thing in the wrong 
field.

there's no need to use this if you're using the class as a "record"; 
just set the relevant attributes and be done with it.

(see the "simulate UI" part of my code example for how to do that).

</F>



From richardjones at optushome.com.au  Tue Sep 26 18:03:14 2006
From: richardjones at optushome.com.au (Richard Jones)
Date: Wed, 27 Sep 2006 08:03:14 +1000
Subject: a different question: can you earn a living with *just* python?
References: <zkfSg.30$1n3.400@news.tufts.edu>
Message-ID: <4519a3a2$0$5108$afc38c87@news.optusnet.com.au>

John Salerno wrote:
> But what if you are an expert Python program and have zero clue about
> other languages? Can you still earn a living that way, or do most/all
> companies require multiple language proficiency?

These are separate questions. I know a dozen languages but I'm only required
to know Python for my day job.


    Richard



From rrs at researchut.com  Fri Sep  1 12:13:46 2006
From: rrs at researchut.com (Ritesh Raj Sarraf)
Date: Fri, 01 Sep 2006 21:43:46 +0530
Subject: Threads and Progress Bar
Message-ID: <qq2ms3-t8h.ln1@www.researchut.com>

Hi,

I have a small application, written in Python, that uses threads.
The application uses function foo() to download files from the web. As it reads
data from the web server, it runs a progress bar by calling an install of a
progress bar class.

When using threads, I get the problem that the progress bar gets over-written by
the download progress of files from other threads.

I believe my change has to go into the progress bar class to make it thread
aware.

Are they any docs/suggestions on how to implement progress bars along with
threads ?

Thanks,
Ritesh
-- 
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."
"Stealing logic from one person is plagiarism, stealing from many is research."
"The great are those who achieve the impossible, the petty are those who
cannot - rrs"



From theller at python.net  Wed Sep 27 14:22:47 2006
From: theller at python.net (Thomas Heller)
Date: Wed, 27 Sep 2006 20:22:47 +0200
Subject: Python CTypes translation of (pv != NULL)
In-Reply-To: <1159375238.173590.187840@e3g2000cwe.googlegroups.com>
References: <1159230428.257680.296550@m73g2000cwd.googlegroups.com>	<mailman.630.1159251019.10491.python-list@python.org>	<1159297203.610395.173710@i3g2000cwc.googlegroups.com>	<mailman.755.1159316054.10491.python-list@python.org>
	<1159375238.173590.187840@e3g2000cwe.googlegroups.com>
Message-ID: <efefhl$752$1@sea.gmane.org>

p.lavarre at ieee.org schrieb:
>> It says:
>>
>> NULL pointers have a False boolean value:
>>  >>> null_ptr = POINTER(c_int)()
>>  >>> print bool(null_ptr)
>> False
> 
> Yes.
> 
>> That means that NULL pointers are considered False in a boolean
>> expression (and you could assume that non-NULL pointers are True, as
>> any other object in general),
> 
> I see this now that you show the clueless newbie me, yes thank you.
> Except now by showing me here we have provoked the authority Thomas
> Heller to say:
> 
>> > > Generally pointer instances have a False boolean value, so
>> > > 'if pv: ....'
>> > > should work.  Except for c_void_p, c_char_p and c_wchar_p instances.
> 
> That English I do not understand.  "Except" how?

Actually I was wrong - there is no exception.  To summarize:

All ctypes NULL pointers have a False boolean value.
So, this C-code:

    if (pv) { /* or 'if (pv != NULL)' */
        return *pv; /* whatever */
    } else {
        /* handle NULL pointer */
    }

translates to this Python code:

    if pv:
        return pv[0] # or whatever
    else:
        # pv is a NULL pointer

Works for instances of c_char_p, c_void_p, c_wchar_p,
and instances of POINTER(some_ctype).

If you want to make the 'if pv:' line more verbose, you could as well
write 'if bool(pv):' or 'if bool(pv) == False', but why would
you want to do this?

Thomas



From tony.bedford at gmail.com  Thu Sep 21 13:14:42 2006
From: tony.bedford at gmail.com (codefire)
Date: 21 Sep 2006 10:14:42 -0700
Subject: I need some help with a regexp please
Message-ID: <1158858881.894280.93230@d34g2000cwd.googlegroups.com>

Hi,

I am trying to get a regexp to validate email addresses but can't get
it quite right. The problem is I can't quite find the regexp to deal
with ignoring the case james..kirk at fred.com, which is not valid. Here's
my attempt, neither of my regexps work quite how I want:

[code]
import os
import re

s = 'Hi james..kirk at fred.com dr.spock at blarg.com jim at home.com @@not
scottie at home.space.com partridge in a pear tree'
r = re.compile(r'\w+\.?\w+@[^@\s]+\.\w+')
#r = re.compile(r'[a-z\-\.]+@[a-z\-\.]+')

addys = set()
for a in r.findall(s):
    addys.add(a)

for a in sorted(addys):
    print a
[/code]

This gives:
dr.spock at blarg.com
jim at home.com
kirk at fred.com   <-- shouldn't be here :(
scottie at home.space.com

Nearly there but no cigar :)

I can't see the wood for the trees now :) Can anyone suggest a fix
please?

Thanks,
Tony



From yohell at ifm.liu.se  Fri Sep  1 06:24:43 2006
From: yohell at ifm.liu.se (Joel Hedlund)
Date: Fri, 01 Sep 2006 12:24:43 +0200
Subject: Python style: to check or not to check args and data members
In-Reply-To: <44f7f9e6$0$24396$636a55ce@news.free.fr>
References: <ed7q6j$9mh$1@news.lysator.liu.se>
	<mailman.10220.1157068606.27775.python-list@python.org>
	<ed8p5b$ff7$1@news.lysator.liu.se>
	<44f7f9e6$0$24396$636a55ce@news.free.fr>
Message-ID: <ed91hj$hdo$1@news.lysator.liu.se>

> I'm not sure that trying to fight against the language is a sound
> approach, whatever the language. 

That's the very reason I posted in the first place. I feel like I'm fighting 
the language, and since python at least to me seems to be so well thought 
out in all other aspects, the most obvious conclusion must be that I'm 
thinking about this the wrong way. And that's why I need your input!

>> > Or taken to the other extreme: Should I simply duck-type everything, and
>> > only focus my validation efforts to external data (from users, external
>> > applications and other forces of evil). 
> 
> IMHO and according to my experience : 99% yes (there are few corner
> cases where it makes sens to ensure args correctness - which may or not
> imply type-checking). Packages like FormEncode are great for data
> conversion/validation. Once you have trusted data, the only possible
> problem is within your code.

That approach is quite in line with the "blame yourself" methodology, which 
seems to work in most other circumstances. Sort of like, developers who feed 
bad data into my code have only themselves to blame! I can dig that. :-)

Hmmm... So. I should build grimly paranoid parsers for external data, use 
duck-typed interfaces everywhere on the inside, and simply callously 
disregard developers who are disinclined to read documentation? I could do that.

 > if you're really serious, unit tests is the way to go - they can check
 > for much more than just types.

Yes, I'm very much serious indeed. But I haven't done any unit testing. I'll 
have to check into that. Thanks!

> My 2 cents.

Thankfully recieved and collecting interest as we speak.

Cheers!
/Joel


From kay.schluehr at gmx.net  Sat Sep 23 09:56:50 2006
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 23 Sep 2006 06:56:50 -0700
Subject: Python and checked exceptions
References: <1159009493.872015.33880@d34g2000cwd.googlegroups.com>
	<ef3712$vna$00$1@news.t-online.com>
Message-ID: <1159019810.713234.304450@d34g2000cwd.googlegroups.com>

Peter Otten wrote:
> Kay Schluehr wrote:
>
> > A new cookbook recipe suggesting two decorators @throws and @catches
> > for treatment of checked exceptions in Python:
> >
> > http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498131
> >
> > This might be of practical interest for some and theoretical interest
> > for others - in particular those who know checked ex as a language
> > feature of Java.
>
> Probably not what you wanted:
>
> >>> test()
> Raises UncheckedExceptionError(exceptions.ZeroDivisionError) -> OK
> Raises ZeroDivisionError -> OK
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "checked_exceptions.py", line 134, in test
>     test4(3,2)
> UnboundLocalError: local variable 'test4' referenced before assignment
> 
> Peter

Thanks, I fixed this.

Kay



From accurrent at gmail.com  Fri Sep 15 23:55:59 2006
From: accurrent at gmail.com (accurrent at gmail.com)
Date: 15 Sep 2006 20:55:59 -0700
Subject: mp3 libs and programs
References: <R52467755.195.487.1@mx-extra>
	<mailman.161.1158370142.10491.python-list@python.org>
	<1158370409.274912.294970@h48g2000cwc.googlegroups.com>
Message-ID: <1158378959.627154.69240@k70g2000cwa.googlegroups.com>

PyMedia has Windows binaries available for download.
http://prdownloads.sourceforge.net/pymedia/pymedia-1.3.7.2.win32-py2.4.exe?download
Jay wrote:
> Only if I have to.  PyMedia is a pain and a half to build and why do
> that if I can just pipe it out to some other program?
>
>
> Tim Williams wrote:
> > On 15 Sep 2006 18:16:41 -0700, Jay <jaysherby at gmail.com> wrote:
> > > I'm writing a python script that involves playing mp3 files.  The first
> > > approach I had was sending commands to unix command-line programs in
> > > order to play them.  I tired mpg123 and moosic, but there was a key
> > > feature to my program's success that's missing.  SEEK!  I need to be
> > > able to start playing a song at an arbitrary point in the song.  I
> > > can't find anything to let me do this.  Does anyone have any advice or
> > > has anyone needed something similar?
> > 
> > http://pymedia.org/   maybe
> > 
> > :)



From python.list at tim.thechases.com  Tue Sep 26 12:31:01 2006
From: python.list at tim.thechases.com (Tim Chase)
Date: Tue, 26 Sep 2006 11:31:01 -0500
Subject: identifying new not inherited methods
In-Reply-To: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
References: <1159285472.965554.170420@d34g2000cwd.googlegroups.com>
Message-ID: <451955C5.6040003@tim.thechases.com>

> I am writing a library in which I need to find the names of methods
> which are implemented in a class, rather than inherited from another
> class. To explain more, and to find if there is another way of doing
> it, here is what I want to do: I am defining two classes, say A and B,
> as:
> 
> class A(object):
>     def list_cmds(self):
>         'implementation needed'
>         ?
>     def __init__(self):
>     ... (rest of class)
> 
> class B(A):
>     def cmd1(self, args):
>         pass
>     def cmd2(self, args):
>         pass
> 
> I need an implementation of list_cmds in A above so that I can get a
> result:
> 
>>>> b=B()
>>>> b.list_cmds()
> ['cmd1','cmd2']                    #order not important

While I'm not sure if this is the best/most-pythonic way to do 
it, but it did it for me:


#############################################################
class A(object):
	def list_cmds(self):
		root_cmds = set(dir(A))
		child_cmds = set(dir(self))
		return list(child_cmds - root_cmds)
	def __init__(self):
		pass

class B(A):
	def cmd1(self, args):
		pass
	def cmd2(self, args):
		pass

b = B()
print repr(b.list_cmds())
#############################################################


If you have multiple inheritance going on, and you only want the 
methods that the child adds, you might try something like



#############################################################
class A(object):
	def list_cmds(self):
		parent_cmds = set()
		for base in self.__class__.__bases__:
			parent_cmds.update(dir(base))
		child_cmds = set(dir(self))
		return list(child_cmds - parent_cmds)
	def __init__(self):
		pass

class C(object):
	def foo1(self, args): pass
	def foo2(self, args): pass
	
class B(A, C):
	def cmd1(self, args):
		pass
	def cmd2(self, args):
		pass

b = B()
print repr(b.list_cmds())

#############################################################

Just a few ideas,

-tkc






From rtw at freenet.co.uk  Tue Sep 26 15:18:22 2006
From: rtw at freenet.co.uk (Rob Williscroft)
Date: Tue, 26 Sep 2006 14:18:22 -0500
Subject: iterator question
References: <mailman.716.1159290541.10491.python-list@python.org>
	<Xns984ACDA635C9rtwfreenetREMOVEcouk@216.196.109.145>
Message-ID: <Xns984ACE97626F4rtwfreenetREMOVEcouk@216.196.109.145>

Rob Williscroft wrote in news:Xns984ACDA635C9rtwfreenetREMOVEcouk@
216.196.109.145 in comp.lang.python:

>>>> seq = range(11)
>>>> zip(seq[::2], seq[1::2] + [None])
> [(0, 1), (2, 3), (4, 5), (6, 7), (8, 9), (10, None)]
> 
>>>> seq = range(10)
>>>> zip(seq[::2], seq[1::2] + [None])
> [(0, 1), (2, 3), (4, 5), (6, 7), (8, 9)]

For bigger sequences:

>>> import itertools as it
>>> seq = range(11)
>>> even = it.islice( seq, 0, None, 2 )
>>> odd = it.islice( seq, 1, None, 2 )
>>> zipped = it.izip( even, it.chain( odd, [None] ) )
>>> list( zipped )
[(0, 1), (2, 3), (4, 5), (6, 7), (8, 9), (10, None)]


Rob.
-- 
http://www.victim-prime.dsl.pipex.com/


From mail at microcorp.co.za  Sat Sep  2 03:55:49 2006
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sat, 2 Sep 2006 09:55:49 +0200
Subject: IndentationError: expected an indented block
References: <1157170194.270363.67430@h48g2000cwc.googlegroups.com>
Message-ID: <006201c6ce65$8ee61560$03000080@hendrik>


 <casioculture at gmail.com> Wrote:


| 
| Haha. How can I fix this!
| 
| 
| 

Use either tabs, or spaces, but not both....

- Hendrik



From abpillai at gmail.com  Wed Sep 27 03:41:37 2006
From: abpillai at gmail.com (Anand)
Date: 27 Sep 2006 00:41:37 -0700
Subject: Python website bug: Wrong URL in
	http://www.python.org/download/releases/2.5/highlights/
Message-ID: <1159342897.655102.175820@d34g2000cwd.googlegroups.com>

The URL which links to "Whats New in Python 2.5" in the following text
is wrong.

"Here are some of the (subjective) highlights of Python 2.5. More
detail on almost all of the new features can be found in the document
What's New In Python 2.5"

It links to http://docs.python.org/dev/whatsnew/ whereas it should
point to http://docs.python.org/whatsnew/whatsnew25.html instead.

I tried to report the bug in python.org using
http://wiki.python.org/moin/PythonWebsiteCreatingNewTickets but since I
dont have a Trac login there, I am reporting it here. Python.org
webmaster, please consider this a bug report.

Thanks

-Anand



From seberino at spawar.navy.mil  Fri Sep 29 14:25:46 2006
From: seberino at spawar.navy.mil (seberino at spawar.navy.mil)
Date: 29 Sep 2006 11:25:46 -0700
Subject: Can recursive descent parser handle Python grammar?
In-Reply-To: <1159519787.034676.316060@b28g2000cwb.googlegroups.com>
References: <1159484100.469926.25210@h48g2000cwc.googlegroups.com>
	<1159519787.034676.316060@b28g2000cwb.googlegroups.com>
Message-ID: <1159554346.373656.5790@m73g2000cwd.googlegroups.com>


Ben Sizer wrote:
> seberino at spawar.navy.mil wrote:
> > I'm a compiler newbie and was curious if Python's language/grammar
> > can be handled by a recursive descent parser.
>
> I believe a recursive descent parser can handle any grammar; it just
> depends on how pure you want it to be.
> 
> -- 
> Ben Sizer

Thanks!  What do you mean by 'pure'?

Chris



From sjmachin at lexicon.net  Mon Sep 11 10:08:21 2006
From: sjmachin at lexicon.net (John Machin)
Date: 11 Sep 2006 07:08:21 -0700
Subject: efficient text file search.
In-Reply-To: <45054e6a$0$4512$e4fe514c@news.xs4all.nl>
References: <1157973527.817462.207420@h48g2000cwc.googlegroups.com>
	<45054921$0$4526$e4fe514c@news.xs4all.nl>
	<1157974937.286653.5500@h48g2000cwc.googlegroups.com>
	<45054e6a$0$4512$e4fe514c@news.xs4all.nl>
Message-ID: <1157983701.863356.259790@d34g2000cwd.googlegroups.com>


Luuk wrote:
[snip]
> some googling turned op the following.
> Second paragraph of chapter 14 of http://www.amk.ca/python/2.1/
[snip]
> For a fuller discussion of the line I/O changes, see the python-dev summary
> for January 1-15, 2001 at http://www.amk.ca/python/dev/2001-01-1.html.

That is *HISTORY*. That is Python 2.1. That is the year 2001.
xreadlines is as dead as a dodo.



From guido-clp at a-nugget.de  Mon Sep  4 03:46:41 2006
From: guido-clp at a-nugget.de (Guido Goldstein)
Date: Mon, 04 Sep 2006 09:46:41 +0200
Subject: Twisted vs POS (Plain-old sockets)
References: <d416abde0609030019u5a75d6b1mdc809c88284370da@mail.gmail.com>
Message-ID: <m2ac5g6plq.fsf@mail.a-nugget.de>


Hi!

On Sun, 3 Sep 2006 00:19:17 -0700
  "Darren Kirby" <bulliver at gmail.com> wrote:
[...]
> I guess I am wondering if given the fact I need a custom protocol, and need
> to
> talk TCP/IP should I stick with twisted or just use plain old sockets and
> build it myself? Is there a third option I should consider? Have others
> found
> themselves in this situation? Thoughts? Comments? I am really just fishing
> for opinions here...

You might have a look at asyncore/asychat in the standard library.
It does the async stuff for you and it's easy to understand and to
use.

Hope it helps.

Cheers
  Guido G.


From flyingisfun1217 at gmail.com  Tue Sep 26 20:11:37 2006
From: flyingisfun1217 at gmail.com (flyingisfun1217 at gmail.com)
Date: 26 Sep 2006 17:11:37 -0700
Subject: AN Intorduction to Tkinter
In-Reply-To: <1159308273.158474.253230@m7g2000cwm.googlegroups.com>
References: <1159303606.988830.54800@e3g2000cwe.googlegroups.com>
	<mailman.744.1159305439.10491.python-list@python.org>
	<1159308273.158474.253230@m7g2000cwm.googlegroups.com>
Message-ID: <1159315897.885088.302950@m7g2000cwm.googlegroups.com>

> Tis question was just asked on the py2exe mailing list. I predicted
> that if it was asked here, you would respond asking exactly which
> examples didn't work. :-p

Right you were :-)

Just want to learn what I already know as a great programming
interface(?)/language...

Tanner



From walterbyrd at iname.com  Mon Sep 25 19:09:58 2006
From: walterbyrd at iname.com (walterbyrd)
Date: 25 Sep 2006 16:09:58 -0700
Subject: does anybody earn a living programming in python?
Message-ID: <1159225798.492198.89880@b28g2000cwb.googlegroups.com>

If so, I doubt there are many. 

I wonder why that is?



From brendandetracey at yahoo.com  Thu Sep 21 09:37:44 2006
From: brendandetracey at yahoo.com (Brendan)
Date: 21 Sep 2006 06:37:44 -0700
Subject: Python 2.5 WinXP AMD64
Message-ID: <1158845864.338644.23180@d34g2000cwd.googlegroups.com>

Hello,
I just tried to use the Windows XP installer for Python 2.5 AMD64 but I
get the error message: "Installation package not supported by processor
type"

I am running Windows XP Pro on an AMD Athon 64 Processor.

Do I need to have a 64-bit OS to use this version?



From http  Wed Sep 27 15:50:29 2006
From: http (Paul Rubin)
Date: 27 Sep 2006 12:50:29 -0700
Subject: OT: productivity and long computing delays
Message-ID: <7xzmcl2inu.fsf_-_@ruckus.brouhaha.com>

I'm doing something where I frequently but unpredictably (i.e. I can't
plan for it in advance) hit a snag that requires me to rebuild a large
project.  The rebuild takes a couple hours.  During that time, I'm
twiddling my thumbs and/or posting here, i.e. not getting anything
useful done.  But the delay is not long enough that I can really
switch to another project for a while.  

Anyone got any suggestions?  How do you deal with this?  It could be
mitigated with a faster computer (I'm using a 1.2 ghz Pentium M) but
the overall task isn't large enough to justify going out and buying
one.  Anyway, I did the same build on a 2 ghz Athlon 64 and was
surprised that the speedup was only 35% or so.  I'd have to get a
multiprocessor box to obtain really substantial gains.


From srikrishnamohan at gmail.com  Mon Sep 25 16:05:28 2006
From: srikrishnamohan at gmail.com (km)
Date: Tue, 26 Sep 2006 01:35:28 +0530
Subject: ANN: dmath 0.9 - Math routines for the Decimal type
In-Reply-To: <ef9brp$hjv$1@eeyore.INS.cwru.edu>
References: <ef9bab$fbj$1@eeyore.INS.cwru.edu>
	<ef9brp$hjv$1@eeyore.INS.cwru.edu>
Message-ID: <f4cc03640609251305r27d5abe0h9148ad06e265fbbb@mail.gmail.com>

and how different is MIT licence to GPL ?
could u elaborate on that ?
regards,
KM

On 9/26/06, Brian Beck <exogen at gmail.com> wrote:
> Brian Beck wrote:
> > What is dmath?
> > ==============
> > dmath provides the standard math routines for Python's arbitrary-precision
> > Decimal type. These include acos, asin, atan, atan2, ceil, cos, cosh,
> > degrees, e, exp, floor, golden_ratio, hypot, log, log10, pi, pow, radians,
> > sign, sin, sinh, sqrt, tan, and tanh.
>
> Oh yeah, you may be wondering how this differs from decimalfuncs:
> http://cheeseshop.python.org/pypi/decimalfuncs/1.4
>
> The answer is that dmath has the complete set of math routines (not just a
> subset), it's faster (from what I can tell), doesn't require its own
> precision-setting method, and it's MIT instead of GPL licensed.
>
> --
> Brian Beck
> Adventurer of the First Order
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From bvdp at xplornet.com  Fri Sep  8 22:15:45 2006
From: bvdp at xplornet.com (bvdp at xplornet.com)
Date: 8 Sep 2006 19:15:45 -0700
Subject: convert loop to list comprehension
In-Reply-To: <1157767525.761220.117190@d34g2000cwd.googlegroups.com>
References: <1157758817.446690.105620@i42g2000cwa.googlegroups.com>
	<1157760946.227349.99390@m73g2000cwd.googlegroups.com>
	<7xvenxx4j3.fsf@ruckus.brouhaha.com>
	<1157762409.805195.231770@m73g2000cwd.googlegroups.com>
	<1157767525.761220.117190@d34g2000cwd.googlegroups.com>
Message-ID: <1157768144.939694.81730@b28g2000cwb.googlegroups.com>


Carl Banks wrote:
> bvdp at xplornet.com wrote:
> > Paul Rubin wrote:
> > > bearophileHUGS at lycos.com writes:
> > > > print sum( ([i]*n for i,n in enumerate(seq)), [])
> > >
> > > Wow, I had no idea you could do that.  After all the discussion about
> > > summing strings, I'm astonished.
> >
> > Me too ... despite what bearophile said, this is faster than the 2nd
> > example. Nearly as fast as the original loop :)
>
> See if it's still faster if the original sequence is length 1000.
> (Hint: it won't be.)  Adding lists with sum has the same performance
> drawback that adding strings does, so it should be avoided.
>
> sum is for adding numbers; please stick to using it that way.
>
> FWIW, the original loop looked perfectly fine and readable and I'd
> suggest going with that over these hacked-up listcomp solutions.  Don't
> use a listcomp just for the sake of using a listcomp.

Thanks for that, Carl. I think that using the loop is probably what
I'll end up doing. I had no idea that the listcomp thing would be quite
a complicated as it is appearing. I had it in my mind that I was
missing some obvious thing which would create a simple solution :)

Mind you, there are some interesting bits and pieces of code in this
thread!



From bearophileHUGS at lycos.com  Thu Sep 21 07:24:02 2006
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 21 Sep 2006 04:24:02 -0700
Subject: Can I inherit member variables?
In-Reply-To: <1158833478.915272.88700@e3g2000cwe.googlegroups.com>
References: <1158832378.694593.240340@i42g2000cwa.googlegroups.com>
	<1158833478.915272.88700@e3g2000cwe.googlegroups.com>
Message-ID: <1158837842.914812.55190@i42g2000cwa.googlegroups.com>

MonkeeSage:

If you have multiple inheritance do you need the old style init anyway?

class Animal1(object):
  def __init__(self, weight, colour):
    self.weight = weight
    self.colour = colour

class Animal2(object):
  def __init__(self, name):
    self.name = name

class Bird(Animal1, Animal2):
  def __init__(self, weight, color, wingspan, name):
    super(Bird, self).__init__(weight, color) # Animal1
    Animal2.__init__(self, name)
    self.wingspan = wingspan
    print self.weight, self.colour, self.wingspan, self.name

al = Bird(12, "White", 2, "Albatross")

Bye,
bearophile



From antroy at gmail.com  Thu Sep 14 18:20:52 2006
From: antroy at gmail.com (Ant)
Date: 14 Sep 2006 15:20:52 -0700
Subject: Looking for the Perfect Editor
In-Reply-To: <4509BEDC.9090100@cox.net>
References: <1157658338.661425.207140@b28g2000cwb.googlegroups.com>
	<1158167657.792186.221490@e3g2000cwe.googlegroups.com>
	<mailman.48.1158174903.10491.python-list@python.org>
	<1158206057.688002.144980@i42g2000cwa.googlegroups.com>
	<4509BEDC.9090100@cox.net>
Message-ID: <1158272452.828142.43250@m73g2000cwd.googlegroups.com>


Roger wrote:
...
> The biggest problem I have with anything written in Java is the long
> startup time.  The editor may be great but the platform is mediocre.

The startup time is one of the main reasons I have started to use vim
more than jEdit. That and the fact that I currently have to work on
headless linux servers over ssh, and I'm fed up with constanty hitting
escape for no apparent reason, or typing :w at the end of a line...

Vi is a seriously steep learning curve though, and I wouldn't recommend
it for ease of use. I've been using it on and off for two years now,
and have only just started to use some of the more advanced features...

jEdit however, if you keep it in memory (it can be started in server
mode, where new instances connect to the running instance) it's not too
slow to start up, and is very powerful very quickly. As others have
said, the console plugin is very good, (an equivalent I haven't found
for vim yet - anyone?) jython is only required if you want to write
macros or plugins in python.



From duncan.booth at invalid.invalid  Tue Sep 26 06:02:10 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 Sep 2006 10:02:10 GMT
Subject: QuoteSQL
References: <ef38i2$6tb$2@lust.ihug.co.nz>
	<slrneha9ng.k6.sybrenUSE@schuimige.stuvel.eu>
	<ef5m1h$h1k$4@lust.ihug.co.nz>
	<slrnehd2vg.7nu.sybrenUSE@schuimige.stuvel.eu>
	<ef7uue$mn8$1@lust.ihug.co.nz>
	<slrnehf19i.ejf.sybrenUSE@schuimige.stuvel.eu>
	<ef81f6$rej$3@lust.ihug.co.nz>
	<slrnehf77t.f8c.sybrenUSE@schuimige.stuvel.eu>
	<Xns98496B28F5FBFduncanbooth@127.0.0.1>
	<slrnehfah2.foq.sybrenUSE@schuimige.stuvel.eu>
	<ef8d06$fui$5@lust.ihug.co.nz>
	<Xns98498D79318AFduncanbooth@127.0.0.1>
	<efapj7$rfd$2@lust.ihug.co.nz>
Message-ID: <Xns984A6E99A1A73duncanbooth@127.0.0.1>

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> wrote:

> In message <Xns98498D79318AFduncanbooth at 127.0.0.1>, Duncan Booth wrote:
> 
>> The spurious escaping of the apostrophe does no harm, but spuriously
>> escaping a newline makes the select match the letter 'n' insteal of
>> matching a newline.
> 
> And how would you get my QuoteSQL routine, as written, to make the same
> mistake you did?

If you think I made a mistake I'm afraid you'll have to tell me what it 
was. I'm unable to read your mind.

However, your QuoteSQL messes up every time because it wraps double 
quotes round the whole string, so it isn't suitable for use with 
parameterised queries at all. If you care to modify it to work in that 
situation I think you'll find that the only characters you need to quote 
are \, % and _. Quoting anything else would be a mistake.

In particular it currently turns newlines in backslash followed by n which 
(since MySQL ignores the extra backslash escape) is equivalent to turning 
newlines into the character n.


From sjmachin at lexicon.net  Tue Sep 19 19:47:31 2006
From: sjmachin at lexicon.net (John Machin)
Date: 19 Sep 2006 16:47:31 -0700
Subject: Cheese Shop Registration error
References: <1158502370.037151.266260@i3g2000cwc.googlegroups.com>
	<450dee26$0$22358$afc38c87@news.optusnet.com.au>
	<1158572650.269903.309690@i42g2000cwa.googlegroups.com>
	<450f165c$0$5111$afc38c87@news.optusnet.com.au>
	<1158618349.740529.181620@e3g2000cwe.googlegroups.com>
	<4510768f$0$11973$afc38c87@news.optusnet.com.au>
Message-ID: <1158709651.487843.9930@b28g2000cwb.googlegroups.com>

Richard Jones wrote:
> John Machin wrote:
> > | >>> int("6A61E3AD")
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in ?
> > ValueError: invalid literal for int(): 6A61E3AD
> > | >>> int("6A61E3AD", 16)
> > 1784800173
> >
> > What am I missing?
>
> Ah, thankyou! I, on the other hand, looked at that code several times and
> saw nothing ;)
>
> I've fixed the code and it'll be fixed on the server soon (once apache
> restarts itself).
>

Hi Richard, might be a good idea to spell out the actual criteria
rather than rely on side effects of int -- e.g. if the input is not
subject to .strip() somewhere between the keyboard and your code, you
could get false positives:

| >>> int("1234567 ",16)
| 19088743
| >>> int(" 1234567",16)
| 19088743

re.match("[A-Fa-f0-9]{8,8}", data.strip()) makes it plain what is
intended ...

Cheers,
John


Cheers,
John



From fredrik at pythonware.com  Tue Sep 12 07:01:40 2006
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 12 Sep 2006 13:01:40 +0200
Subject: Is it just me, or is Sqlite3 goofy?
In-Reply-To: <df2316bd0609111928q65f9dd54hf928b39b01677cb@mail.gmail.com>
References: <df2316bd0609111359g6b1bf7b2y979c7d6bccbd582b@mail.gmail.com>	<ee4m16$og$1@sea.gmane.org>	<mailman.303.1158019822.5279.python-list@python.org>	<1158024230.139214.197070@e3g2000cwe.googlegroups.com>
	<df2316bd0609111928q65f9dd54hf928b39b01677cb@mail.gmail.com>
Message-ID: <ee642j$uib$1@sea.gmane.org>

Mike Owens wrote:

> Crackpot? And now we get to why I took the flamebait -- wonderfully
> constructive comments such as this.
> 
> I know SQLite's author. Besides being a nice and clearly very
> intelligent person, he also holds a master's degree in electrical
> engineering from Georgia Tech and a PhD in computer science from Duke
> University. His "crackpot" software is used by Sun, Apple, Symbian,
> Google, AOL, Philips, DLink, and I don't know how many other
> companies, not to mention countless open source projects such as
> Mozilla, PHP, and now Python.

but is he a member of Mensa?

</F>



From ptmcg at austin.rr._bogus_.com  Tue Sep 19 14:32:41 2006
From: ptmcg at austin.rr._bogus_.com (Paul McGuire)
Date: Tue, 19 Sep 2006 18:32:41 GMT
Subject: Python 2.5 slower with pyparsing 1.4.3
Message-ID: <dJWPg.5496$vD2.1389@tornado.texas.rr.com>

Running my Verilog parser tests, I get a 5-10% slowdown with Python 2.5 vs. 
Python 2.4.1 (See http://pyparsing.wikispaces.com/News.)

I apologize for not running performance tests sooner, I only ran regression 
tests on the release candidates, and those were all okay.

I'll look through the "What's New in 2.5" and see if there are some features 
I can take advantage of for the upcoming 1.4.4 release (while retaining 
backward compat with Py2.3).

-- Paul




From thorsten at thorstenkampe.de  Tue Sep 12 13:04:43 2006
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Tue, 12 Sep 2006 18:04:43 +0100
Subject: Running python from a usb drive
References: <1157994898.495770.239780@m73g2000cwd.googlegroups.com>
	<1158001296.005787.317950@m73g2000cwd.googlegroups.com>
	<1158003262.592863.138430@p79g2000cwp.googlegroups.com>
	<ee4fm8$2elh$1@ulysses.news.tiscali.de>
	<mailman.290.1158007035.5279.python-list@python.org>
	<d7bdbd5hpo8h$.1dkxmuqujwv80.dlg@40tude.net>
	<mailman.305.1158021030.5279.python-list@python.org>
	<tkfqkdhfgw0q$.10fmrp0jstguy$.dlg@40tude.net>
	<1158024872.905234.117100@m73g2000cwd.googlegroups.com>
	<1158026095.979937.206300@i42g2000cwa.googlegroups.com>
	<1158028522.981282.159760@m73g2000cwd.googlegroups.com>
	<1158063006.685269.66090@i3g2000cwc.googlegroups.com>
Message-ID: <1cbgfbo86x0qs$.x3x3jblzihjx$.dlg@40tude.net>

* cjl (2006-09-12 13:10 +0100)
> Jason:
> 
> Thanks! That worked...in fact, almost everything is now working as
> expected (so far).
> 
> Here is my batch file:
> 
> echo "Making changes to path and file associations..."
> path =
> %PATH%;%CD%Python24;%CD%Python24\libs;%CD%Python24\Scripts;%CD%Python24\Lib\site-packages;%CD%Python24\DLLs
> set PYTHONPATH=%CD%Python24
> ASSOC .py=Python.File
> ASSOC .pyc=Python.CompiledFile
> ASSOC .pyo=Python.CompiledFile
> ASSOC .pyw=Python.NoConFile
> FTYPE Python.File=%CD%Python24\python.exe "%%1" %%*
> FTYPE Python.CompiledFile=%CD%Python24\python.exe "%%1" %%*
> FTYPE Python.NoConFile=%CD%Python24\pythonw.exe "%%1" %%*
> set PATHTEXT=.py;%PATHTEXT%
> CMD
> 
> I'm still having a problem with setting PATHTEXT...I should be able to
> now type django-admin at the cmd prompt and have it work, but I need to
> still type django-admin.py  ... I'm not sure what's wrong with my
> setting of pathtext.

Setting environment variables has only effect on the process itself
and the subprocesses. This has nothing to do with Windows, it's the
same with Linux.


From duncan.booth at invalid.invalid  Sat Sep  9 09:01:36 2006
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 9 Sep 2006 13:01:36 GMT
Subject: super and __init__
References: <1157741577.676925.288290@h48g2000cwc.googlegroups.com>
	<1157752811.316633.91030@b28g2000cwb.googlegroups.com>
Message-ID: <Xns98397D48CF9F4duncanbooth@127.0.0.1>

"Jason" <tenax.raccoon at gmail.com> wrote:

> As far as I can tell, the best way to use super() with an __init__
> function is to stick to a rigid function signiture.
...
> Unfortunately, I don't see a way of avoiding this problem with super().

An easy way to avoid changing the method signature is to use a multi-stage 
construction. So if your class hierarchy uses:

   def __init__(self, foo, bar):
       super(ThisClass, self).__init__(foo, bar)
       ... whatever ...

and you are adding another class to the hierarchy, but that needs a 'baz' 
as well, don't change the signature for __init__, add another method:

   def set_baz(self, baz): ...

Then at the point you construct the objects you can call:

   x = DerivedClass(foo, bar)
   x.set_baz(baz)

If set_baz isn't called then you either use a default value or throw an 
error when something depends on it having been set.